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authorsanine <sanine.not@pm.me>2022-08-25 14:54:53 -0500
committersanine <sanine.not@pm.me>2022-08-25 14:54:53 -0500
commit37c97e345d12f95dde44e1d1a4c2f2aadd4615bc (patch)
treee1bb25bc855883062bdd7847ff2c04290f71c840 /portaudio/src/hostapi/wasapi/pa_win_wasapi.c
parent5634c7b04da619669f2f29f6798c03982be05180 (diff)
add initial structure
Diffstat (limited to 'portaudio/src/hostapi/wasapi/pa_win_wasapi.c')
-rw-r--r--portaudio/src/hostapi/wasapi/pa_win_wasapi.c6534
1 files changed, 6534 insertions, 0 deletions
diff --git a/portaudio/src/hostapi/wasapi/pa_win_wasapi.c b/portaudio/src/hostapi/wasapi/pa_win_wasapi.c
new file mode 100644
index 0000000..c76f302
--- /dev/null
+++ b/portaudio/src/hostapi/wasapi/pa_win_wasapi.c
@@ -0,0 +1,6534 @@
+/*
+ * Portable Audio I/O Library WASAPI implementation
+ * Copyright (c) 2006-2010 David Viens
+ * Copyright (c) 2010-2019 Dmitry Kostjuchenko
+ *
+ * Based on the Open Source API proposed by Ross Bencina
+ * Copyright (c) 1999-2019 Ross Bencina, Phil Burk
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * The text above constitutes the entire PortAudio license; however,
+ * the PortAudio community also makes the following non-binding requests:
+ *
+ * Any person wishing to distribute modifications to the Software is
+ * requested to send the modifications to the original developer so that
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
+ * license above.
+ */
+
+/** @file
+ @ingroup hostapi_src
+ @brief WASAPI implementation of support for a host API.
+ @note pa_wasapi currently requires minimum VC 2005, and the latest Vista SDK
+*/
+
+#include <windows.h>
+#include <stdio.h>
+#include <process.h>
+#include <assert.h>
+
+// Max device count (if defined) causes max constant device count in the device list that
+// enables PaWasapi_UpdateDeviceList() API and makes it possible to update WASAPI list dynamically
+#ifndef PA_WASAPI_MAX_CONST_DEVICE_COUNT
+ #define PA_WASAPI_MAX_CONST_DEVICE_COUNT 0 // Force basic behavior by defining 0 if not defined by user
+#endif
+
+// Fallback from Event to the Polling method in case if latency is higher than 21.33ms, as it allows to use
+// 100% of CPU inside the PA's callback.
+// Note: Some USB DAC drivers are buggy when Polling method is forced in Exclusive mode, audio output becomes
+// unstable with a lot of interruptions, therefore this define is optional. The default behavior is to
+// not change the Event mode to Polling and use the mode which user provided.
+//#define PA_WASAPI_FORCE_POLL_IF_LARGE_BUFFER
+
+//! Poll mode time slots logging.
+//#define PA_WASAPI_LOG_TIME_SLOTS
+
+// WinRT
+#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_APP)
+ #define PA_WINRT
+ #define INITGUID
+#endif
+
+// WASAPI
+// using adjustments for MinGW build from @mgeier/MXE
+// https://github.com/mxe/mxe/commit/f4bbc45682f021948bdaefd9fd476e2a04c4740f
+#include <mmreg.h> // must be before other Wasapi headers
+#if defined(_MSC_VER) && (_MSC_VER >= 1400) || defined(__MINGW64_VERSION_MAJOR)
+ #include <avrt.h>
+ #define COBJMACROS
+ #include <audioclient.h>
+ #include <endpointvolume.h>
+ #define INITGUID // Avoid additional linkage of static libs, excessive code will be optimized out by the compiler
+#ifndef _MSC_VER
+ #include <functiondiscoverykeys_devpkey.h>
+#endif
+ #include <functiondiscoverykeys.h>
+ #include <mmdeviceapi.h>
+ #include <devicetopology.h> // Used to get IKsJackDescription interface
+ #undef INITGUID
+// Visual Studio 2010 does not support the inline keyword
+#if (_MSC_VER <= 1600)
+ #define inline _inline
+#endif
+#endif
+#ifndef __MWERKS__
+ #include <malloc.h>
+ #include <memory.h>
+#endif
+#ifndef PA_WINRT
+ #include <mmsystem.h>
+#endif
+
+#include "pa_util.h"
+#include "pa_allocation.h"
+#include "pa_hostapi.h"
+#include "pa_stream.h"
+#include "pa_cpuload.h"
+#include "pa_process.h"
+#include "pa_win_wasapi.h"
+#include "pa_debugprint.h"
+#include "pa_ringbuffer.h"
+#include "pa_win_coinitialize.h"
+
+#if !defined(NTDDI_VERSION) || (defined(__GNUC__) && (__GNUC__ <= 6) && !defined(__MINGW64__))
+
+ #undef WINVER
+ #undef _WIN32_WINNT
+ #define WINVER 0x0600 // VISTA
+ #define _WIN32_WINNT WINVER
+
+ #ifndef WINAPI
+ #define WINAPI __stdcall
+ #endif
+
+ #ifndef __unaligned
+ #define __unaligned
+ #endif
+
+ #ifndef __C89_NAMELESS
+ #define __C89_NAMELESS
+ #endif
+
+ #ifndef _AVRT_ //<< fix MinGW dummy compile by defining missing type: AVRT_PRIORITY
+ typedef enum _AVRT_PRIORITY
+ {
+ AVRT_PRIORITY_LOW = -1,
+ AVRT_PRIORITY_NORMAL,
+ AVRT_PRIORITY_HIGH,
+ AVRT_PRIORITY_CRITICAL
+ } AVRT_PRIORITY, *PAVRT_PRIORITY;
+ #endif
+
+ #include <basetyps.h> // << for IID/CLSID
+ #include <rpcsal.h>
+ #include <sal.h>
+
+ #ifndef __LPCGUID_DEFINED__
+ #define __LPCGUID_DEFINED__
+ typedef const GUID *LPCGUID;
+ #endif
+ typedef GUID IID;
+ typedef GUID CLSID;
+
+ #ifndef PROPERTYKEY_DEFINED
+ #define PROPERTYKEY_DEFINED
+ typedef struct _tagpropertykey
+ {
+ GUID fmtid;
+ DWORD pid;
+ } PROPERTYKEY;
+ #endif
+
+ #ifdef __midl_proxy
+ #define __MIDL_CONST
+ #else
+ #define __MIDL_CONST const
+ #endif
+
+ #ifdef WIN64
+ #include <wtypes.h>
+ #define FASTCALL
+ #include <oleidl.h>
+ #include <objidl.h>
+ #else
+ typedef struct _BYTE_BLOB
+ {
+ unsigned long clSize;
+ unsigned char abData[ 1 ];
+ } BYTE_BLOB;
+ typedef /* [unique] */ __RPC_unique_pointer BYTE_BLOB *UP_BYTE_BLOB;
+ typedef LONGLONG REFERENCE_TIME;
+ #define NONAMELESSUNION
+ #endif
+
+ #ifndef NT_SUCCESS
+ typedef LONG NTSTATUS;
+ #endif
+
+ #ifndef WAVE_FORMAT_IEEE_FLOAT
+ #define WAVE_FORMAT_IEEE_FLOAT 0x0003 // 32-bit floating-point
+ #endif
+
+ #ifndef __MINGW_EXTENSION
+ #if defined(__GNUC__) || defined(__GNUG__)
+ #define __MINGW_EXTENSION __extension__
+ #else
+ #define __MINGW_EXTENSION
+ #endif
+ #endif
+
+ #include <sdkddkver.h>
+ #include <propkeydef.h>
+ #define COBJMACROS
+ #define INITGUID // Avoid additional linkage of static libs, excessive code will be optimized out by the compiler
+ #include <audioclient.h>
+ #include <mmdeviceapi.h>
+ #include <endpointvolume.h>
+ #include <functiondiscoverykeys.h>
+ #include <devicetopology.h> // Used to get IKsJackDescription interface
+ #undef INITGUID
+
+#endif // NTDDI_VERSION
+
+// Missing declarations for WinRT
+#ifdef PA_WINRT
+
+ #define DEVICE_STATE_ACTIVE 0x00000001
+
+ typedef enum _EDataFlow
+ {
+ eRender = 0,
+ eCapture = ( eRender + 1 ) ,
+ eAll = ( eCapture + 1 ) ,
+ EDataFlow_enum_count = ( eAll + 1 )
+ }
+ EDataFlow;
+
+ typedef enum _EndpointFormFactor
+ {
+ RemoteNetworkDevice = 0,
+ Speakers = ( RemoteNetworkDevice + 1 ) ,
+ LineLevel = ( Speakers + 1 ) ,
+ Headphones = ( LineLevel + 1 ) ,
+ Microphone = ( Headphones + 1 ) ,
+ Headset = ( Microphone + 1 ) ,
+ Handset = ( Headset + 1 ) ,
+ UnknownDigitalPassthrough = ( Handset + 1 ) ,
+ SPDIF = ( UnknownDigitalPassthrough + 1 ) ,
+ HDMI = ( SPDIF + 1 ) ,
+ UnknownFormFactor = ( HDMI + 1 )
+ }
+ EndpointFormFactor;
+
+#endif
+
+#ifndef GUID_SECT
+ #define GUID_SECT
+#endif
+
+#define __DEFINE_GUID(n,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8) static const GUID n GUID_SECT = {l,w1,w2,{b1,b2,b3,b4,b5,b6,b7,b8}}
+#define __DEFINE_IID(n,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8) static const IID n GUID_SECT = {l,w1,w2,{b1,b2,b3,b4,b5,b6,b7,b8}}
+#define __DEFINE_CLSID(n,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8) static const CLSID n GUID_SECT = {l,w1,w2,{b1,b2,b3,b4,b5,b6,b7,b8}}
+#define PA_DEFINE_CLSID(className, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
+ __DEFINE_CLSID(pa_CLSID_##className, 0x##l, 0x##w1, 0x##w2, 0x##b1, 0x##b2, 0x##b3, 0x##b4, 0x##b5, 0x##b6, 0x##b7, 0x##b8)
+#define PA_DEFINE_IID(interfaceName, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
+ __DEFINE_IID(pa_IID_##interfaceName, 0x##l, 0x##w1, 0x##w2, 0x##b1, 0x##b2, 0x##b3, 0x##b4, 0x##b5, 0x##b6, 0x##b7, 0x##b8)
+
+// "1CB9AD4C-DBFA-4c32-B178-C2F568A703B2"
+PA_DEFINE_IID(IAudioClient, 1cb9ad4c, dbfa, 4c32, b1, 78, c2, f5, 68, a7, 03, b2);
+// "726778CD-F60A-4EDA-82DE-E47610CD78AA"
+PA_DEFINE_IID(IAudioClient2, 726778cd, f60a, 4eda, 82, de, e4, 76, 10, cd, 78, aa);
+// "7ED4EE07-8E67-4CD4-8C1A-2B7A5987AD42"
+PA_DEFINE_IID(IAudioClient3, 7ed4ee07, 8e67, 4cd4, 8c, 1a, 2b, 7a, 59, 87, ad, 42);
+// "1BE09788-6894-4089-8586-9A2A6C265AC5"
+PA_DEFINE_IID(IMMEndpoint, 1be09788, 6894, 4089, 85, 86, 9a, 2a, 6c, 26, 5a, c5);
+// "A95664D2-9614-4F35-A746-DE8DB63617E6"
+PA_DEFINE_IID(IMMDeviceEnumerator, a95664d2, 9614, 4f35, a7, 46, de, 8d, b6, 36, 17, e6);
+// "BCDE0395-E52F-467C-8E3D-C4579291692E"
+PA_DEFINE_CLSID(IMMDeviceEnumerator,bcde0395, e52f, 467c, 8e, 3d, c4, 57, 92, 91, 69, 2e);
+// "F294ACFC-3146-4483-A7BF-ADDCA7C260E2"
+PA_DEFINE_IID(IAudioRenderClient, f294acfc, 3146, 4483, a7, bf, ad, dc, a7, c2, 60, e2);
+// "C8ADBD64-E71E-48a0-A4DE-185C395CD317"
+PA_DEFINE_IID(IAudioCaptureClient, c8adbd64, e71e, 48a0, a4, de, 18, 5c, 39, 5c, d3, 17);
+// *2A07407E-6497-4A18-9787-32F79BD0D98F* Or this??
+PA_DEFINE_IID(IDeviceTopology, 2A07407E, 6497, 4A18, 97, 87, 32, f7, 9b, d0, d9, 8f);
+// *AE2DE0E4-5BCA-4F2D-AA46-5D13F8FDB3A9*
+PA_DEFINE_IID(IPart, AE2DE0E4, 5BCA, 4F2D, aa, 46, 5d, 13, f8, fd, b3, a9);
+// *4509F757-2D46-4637-8E62-CE7DB944F57B*
+PA_DEFINE_IID(IKsJackDescription, 4509F757, 2D46, 4637, 8e, 62, ce, 7d, b9, 44, f5, 7b);
+
+// Media formats:
+__DEFINE_GUID(pa_KSDATAFORMAT_SUBTYPE_PCM, 0x00000001, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
+__DEFINE_GUID(pa_KSDATAFORMAT_SUBTYPE_ADPCM, 0x00000002, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
+__DEFINE_GUID(pa_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, 0x00000003, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 );
+
+#ifdef __IAudioClient2_INTERFACE_DEFINED__
+typedef enum _pa_AUDCLNT_STREAMOPTIONS {
+ pa_AUDCLNT_STREAMOPTIONS_NONE = 0x00,
+ pa_AUDCLNT_STREAMOPTIONS_RAW = 0x01,
+ pa_AUDCLNT_STREAMOPTIONS_MATCH_FORMAT = 0x02
+} pa_AUDCLNT_STREAMOPTIONS;
+typedef struct _pa_AudioClientProperties {
+ UINT32 cbSize;
+ BOOL bIsOffload;
+ AUDIO_STREAM_CATEGORY eCategory;
+ pa_AUDCLNT_STREAMOPTIONS Options;
+} pa_AudioClientProperties;
+#define PA_AUDIOCLIENTPROPERTIES_SIZE_CATEGORY (sizeof(pa_AudioClientProperties) - sizeof(pa_AUDCLNT_STREAMOPTIONS))
+#define PA_AUDIOCLIENTPROPERTIES_SIZE_OPTIONS sizeof(pa_AudioClientProperties)
+#endif // __IAudioClient2_INTERFACE_DEFINED__
+
+/* use CreateThread for CYGWIN/Windows Mobile, _beginthreadex for all others */
+#if !defined(__CYGWIN__) && !defined(_WIN32_WCE)
+ #define CREATE_THREAD(PROC) (HANDLE)_beginthreadex( NULL, 0, (PROC), stream, 0, &stream->dwThreadId )
+ #define PA_THREAD_FUNC static unsigned WINAPI
+ #define PA_THREAD_ID unsigned
+#else
+ #define CREATE_THREAD(PROC) CreateThread( NULL, 0, (PROC), stream, 0, &stream->dwThreadId )
+ #define PA_THREAD_FUNC static DWORD WINAPI
+ #define PA_THREAD_ID DWORD
+#endif
+
+// Thread function forward decl.
+PA_THREAD_FUNC ProcThreadEvent(void *param);
+PA_THREAD_FUNC ProcThreadPoll(void *param);
+
+// Error codes (available since Windows 7)
+#ifndef AUDCLNT_E_BUFFER_ERROR
+ #define AUDCLNT_E_BUFFER_ERROR AUDCLNT_ERR(0x018)
+#endif
+#ifndef AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED
+ #define AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED AUDCLNT_ERR(0x019)
+#endif
+#ifndef AUDCLNT_E_INVALID_DEVICE_PERIOD
+ #define AUDCLNT_E_INVALID_DEVICE_PERIOD AUDCLNT_ERR(0x020)
+#endif
+
+// Stream flags (available since Windows 7)
+#ifndef AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY
+ #define AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY 0x08000000
+#endif
+#ifndef AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM
+ #define AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM 0x80000000
+#endif
+
+#define PA_WASAPI_DEVICE_ID_LEN 256
+#define PA_WASAPI_DEVICE_NAME_LEN 128
+#ifdef PA_WINRT
+ #define PA_WASAPI_DEVICE_MAX_COUNT 16
+#endif
+
+enum { S_INPUT = 0, S_OUTPUT = 1, S_COUNT = 2, S_FULLDUPLEX = 0 };
+
+// Number of packets which compose single contignous buffer. With trial and error it was calculated
+// that WASAPI Input sub-system uses 6 packets per whole buffer. Please provide more information
+// or corrections if available.
+enum { WASAPI_PACKETS_PER_INPUT_BUFFER = 6 };
+
+#define STATIC_ARRAY_SIZE(array) (sizeof(array)/sizeof(array[0]))
+
+#define PRINT(x) PA_DEBUG(x);
+
+#define PA_SKELETON_SET_LAST_HOST_ERROR( errorCode, errorText ) \
+ PaUtil_SetLastHostErrorInfo( paWASAPI, errorCode, errorText )
+
+#define PA_WASAPI__IS_FULLDUPLEX(STREAM) ((STREAM)->in.clientProc && (STREAM)->out.clientProc)
+
+#ifndef IF_FAILED_JUMP
+#define IF_FAILED_JUMP(hr, label) if(FAILED(hr)) goto label;
+#endif
+
+#ifndef IF_FAILED_INTERNAL_ERROR_JUMP
+#define IF_FAILED_INTERNAL_ERROR_JUMP(hr, error, label) if(FAILED(hr)) { error = paInternalError; goto label; }
+#endif
+
+#define SAFE_CLOSE(h) if ((h) != NULL) { CloseHandle((h)); (h) = NULL; }
+#define SAFE_RELEASE(punk) if ((punk) != NULL) { (punk)->lpVtbl->Release((punk)); (punk) = NULL; }
+
+// Mixer function
+typedef void (*MixMonoToStereoF) (void *__to, const void *__from, UINT32 count);
+
+// AVRT is the new "multimedia scheduling stuff"
+#ifndef PA_WINRT
+typedef BOOL (WINAPI *FAvRtCreateThreadOrderingGroup) (PHANDLE,PLARGE_INTEGER,GUID*,PLARGE_INTEGER);
+typedef BOOL (WINAPI *FAvRtDeleteThreadOrderingGroup) (HANDLE);
+typedef BOOL (WINAPI *FAvRtWaitOnThreadOrderingGroup) (HANDLE);
+typedef HANDLE (WINAPI *FAvSetMmThreadCharacteristics) (LPCSTR,LPDWORD);
+typedef BOOL (WINAPI *FAvRevertMmThreadCharacteristics)(HANDLE);
+typedef BOOL (WINAPI *FAvSetMmThreadPriority) (HANDLE,AVRT_PRIORITY);
+static HMODULE hDInputDLL = 0;
+FAvRtCreateThreadOrderingGroup pAvRtCreateThreadOrderingGroup = NULL;
+FAvRtDeleteThreadOrderingGroup pAvRtDeleteThreadOrderingGroup = NULL;
+FAvRtWaitOnThreadOrderingGroup pAvRtWaitOnThreadOrderingGroup = NULL;
+FAvSetMmThreadCharacteristics pAvSetMmThreadCharacteristics = NULL;
+FAvRevertMmThreadCharacteristics pAvRevertMmThreadCharacteristics = NULL;
+FAvSetMmThreadPriority pAvSetMmThreadPriority = NULL;
+#endif
+
+#define _GetProc(fun, type, name) { \
+ fun = (type) GetProcAddress(hDInputDLL,name); \
+ if (fun == NULL) { \
+ PRINT(("GetProcAddr failed for %s" ,name)); \
+ return FALSE; \
+ } \
+ } \
+
+// ------------------------------------------------------------------------------------------
+/* prototypes for functions declared in this file */
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+PaError PaWasapi_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex index );
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+// dummy entry point for other compilers and sdks
+// currently built using RC1 SDK (5600)
+//#if _MSC_VER < 1400
+//PaError PaWasapi_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex hostApiIndex )
+//{
+ //return paNoError;
+//}
+//#else
+
+// ------------------------------------------------------------------------------------------
+static void Terminate( struct PaUtilHostApiRepresentation *hostApi );
+static PaError IsFormatSupported( struct PaUtilHostApiRepresentation *hostApi,
+ const PaStreamParameters *inputParameters,
+ const PaStreamParameters *outputParameters,
+ double sampleRate );
+static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
+ PaStream** s,
+ const PaStreamParameters *inputParameters,
+ const PaStreamParameters *outputParameters,
+ double sampleRate,
+ unsigned long framesPerBuffer,
+ PaStreamFlags streamFlags,
+ PaStreamCallback *streamCallback,
+ void *userData );
+static PaError CloseStream( PaStream* stream );
+static PaError StartStream( PaStream *stream );
+static PaError StopStream( PaStream *stream );
+static PaError AbortStream( PaStream *stream );
+static PaError IsStreamStopped( PaStream *s );
+static PaError IsStreamActive( PaStream *stream );
+static PaTime GetStreamTime( PaStream *stream );
+static double GetStreamCpuLoad( PaStream* stream );
+static PaError ReadStream( PaStream* stream, void *buffer, unsigned long frames );
+static PaError WriteStream( PaStream* stream, const void *buffer, unsigned long frames );
+static signed long GetStreamReadAvailable( PaStream* stream );
+static signed long GetStreamWriteAvailable( PaStream* stream );
+
+// ------------------------------------------------------------------------------------------
+/*
+ These are fields that can be gathered from IDevice and IAudioDevice PRIOR to Initialize, and
+ done in first pass i assume that neither of these will cause the Driver to "load", but again,
+ who knows how they implement their stuff
+ */
+typedef struct PaWasapiDeviceInfo
+{
+ // Device
+#ifndef PA_WINRT
+ IMMDevice *device;
+#endif
+
+ // device Id
+ WCHAR deviceId[PA_WASAPI_DEVICE_ID_LEN];
+
+ // from GetState
+ DWORD state;
+
+ // Fields filled from IAudioDevice (_prior_ to Initialize)
+ // from GetDevicePeriod(
+ REFERENCE_TIME DefaultDevicePeriod;
+ REFERENCE_TIME MinimumDevicePeriod;
+
+ // Default format (setup through Control Panel by user)
+ WAVEFORMATEXTENSIBLE DefaultFormat;
+
+ // Mix format (internal format used by WASAPI audio engine)
+ WAVEFORMATEXTENSIBLE MixFormat;
+
+ // Fields filled from IMMEndpoint'sGetDataFlow
+ EDataFlow flow;
+
+ // Form-factor
+ EndpointFormFactor formFactor;
+}
+PaWasapiDeviceInfo;
+
+// ------------------------------------------------------------------------------------------
+/* PaWasapiHostApiRepresentation - host api datastructure specific to this implementation */
+typedef struct
+{
+ PaUtilHostApiRepresentation inheritedHostApiRep;
+ PaUtilStreamInterface callbackStreamInterface;
+ PaUtilStreamInterface blockingStreamInterface;
+
+ PaUtilAllocationGroup *allocations;
+
+ /* implementation specific data goes here */
+
+ PaWinUtilComInitializationResult comInitializationResult;
+
+ // this is the REAL number of devices, whether they are useful to PA or not!
+ UINT32 deviceCount;
+
+ PaWasapiDeviceInfo *devInfo;
+
+ // is TRUE when WOW64 Vista/7 Workaround is needed
+ BOOL useWOW64Workaround;
+}
+PaWasapiHostApiRepresentation;
+
+// ------------------------------------------------------------------------------------------
+/* PaWasapiAudioClientParams - audio client parameters */
+typedef struct PaWasapiAudioClientParams
+{
+ PaWasapiDeviceInfo *device_info;
+ PaStreamParameters stream_params;
+ PaWasapiStreamInfo wasapi_params;
+ UINT32 frames_per_buffer;
+ double sample_rate;
+ BOOL blocking;
+ BOOL full_duplex;
+ BOOL wow64_workaround;
+}
+PaWasapiAudioClientParams;
+
+// ------------------------------------------------------------------------------------------
+/* PaWasapiStream - a stream data structure specifically for this implementation */
+typedef struct PaWasapiSubStream
+{
+ IAudioClient *clientParent;
+#ifndef PA_WINRT
+ IStream *clientStream;
+#endif
+ IAudioClient *clientProc;
+
+ WAVEFORMATEXTENSIBLE wavex;
+ UINT32 bufferSize;
+ REFERENCE_TIME deviceLatency;
+ REFERENCE_TIME period;
+ double latencySeconds;
+ UINT32 framesPerHostCallback;
+ AUDCLNT_SHAREMODE shareMode;
+ UINT32 streamFlags; // AUDCLNT_STREAMFLAGS_EVENTCALLBACK, ...
+ UINT32 flags;
+ PaWasapiAudioClientParams params; //!< parameters
+
+ // Buffers
+ UINT32 buffers; //!< number of buffers used (from host side)
+ UINT32 framesPerBuffer; //!< number of frames per 1 buffer
+ BOOL userBufferAndHostMatch;
+
+ // Used for Mono >> Stereo workaround, if driver does not support it
+ // (in Exclusive mode WASAPI usually refuses to operate with Mono (1-ch)
+ void *monoBuffer; //!< pointer to buffer
+ UINT32 monoBufferSize; //!< buffer size in bytes
+ MixMonoToStereoF monoMixer; //!< pointer to mixer function
+
+ PaUtilRingBuffer *tailBuffer; //!< buffer with trailing sample for blocking mode operations (only for Input)
+ void *tailBufferMemory; //!< tail buffer memory region
+}
+PaWasapiSubStream;
+
+// ------------------------------------------------------------------------------------------
+/* PaWasapiHostProcessor - redirects processing data */
+typedef struct PaWasapiHostProcessor
+{
+ PaWasapiHostProcessorCallback processor;
+ void *userData;
+}
+PaWasapiHostProcessor;
+
+// ------------------------------------------------------------------------------------------
+typedef struct PaWasapiStream
+{
+ /* IMPLEMENT ME: rename this */
+ PaUtilStreamRepresentation streamRepresentation;
+ PaUtilCpuLoadMeasurer cpuLoadMeasurer;
+ PaUtilBufferProcessor bufferProcessor;
+
+ // input
+ PaWasapiSubStream in;
+ IAudioCaptureClient *captureClientParent;
+#ifndef PA_WINRT
+ IStream *captureClientStream;
+#endif
+ IAudioCaptureClient *captureClient;
+ IAudioEndpointVolume *inVol;
+
+ // output
+ PaWasapiSubStream out;
+ IAudioRenderClient *renderClientParent;
+#ifndef PA_WINRT
+ IStream *renderClientStream;
+#endif
+ IAudioRenderClient *renderClient;
+ IAudioEndpointVolume *outVol;
+
+ // event handles for event-driven processing mode
+ HANDLE event[S_COUNT];
+
+ // buffer mode
+ PaUtilHostBufferSizeMode bufferMode;
+
+ // must be volatile to avoid race condition on user query while
+ // thread is being started
+ volatile BOOL running;
+
+ PA_THREAD_ID dwThreadId;
+ HANDLE hThread;
+ HANDLE hCloseRequest;
+ HANDLE hThreadStart; //!< signalled by thread on start
+ HANDLE hThreadExit; //!< signalled by thread on exit
+ HANDLE hBlockingOpStreamRD;
+ HANDLE hBlockingOpStreamWR;
+
+ // Host callback Output overrider
+ PaWasapiHostProcessor hostProcessOverrideOutput;
+
+ // Host callback Input overrider
+ PaWasapiHostProcessor hostProcessOverrideInput;
+
+ // Defines blocking/callback interface used
+ BOOL bBlocking;
+
+ // Av Task (MM thread management)
+ HANDLE hAvTask;
+
+ // Thread priority level
+ PaWasapiThreadPriority nThreadPriority;
+
+ // State handler
+ PaWasapiStreamStateCallback fnStateHandler;
+ void *pStateHandlerUserData;
+}
+PaWasapiStream;
+
+// COM marshaling
+static HRESULT MarshalSubStreamComPointers(PaWasapiSubStream *substream);
+static HRESULT MarshalStreamComPointers(PaWasapiStream *stream);
+static HRESULT UnmarshalSubStreamComPointers(PaWasapiSubStream *substream);
+static HRESULT UnmarshalStreamComPointers(PaWasapiStream *stream);
+static void ReleaseUnmarshaledSubComPointers(PaWasapiSubStream *substream);
+static void ReleaseUnmarshaledComPointers(PaWasapiStream *stream);
+
+// Local methods
+static void _StreamOnStop(PaWasapiStream *stream);
+static void _StreamFinish(PaWasapiStream *stream);
+static void _StreamCleanup(PaWasapiStream *stream);
+static HRESULT _PollGetOutputFramesAvailable(PaWasapiStream *stream, UINT32 *available);
+static HRESULT _PollGetInputFramesAvailable(PaWasapiStream *stream, UINT32 *available);
+static void *PaWasapi_ReallocateMemory(void *prev, size_t size);
+static void PaWasapi_FreeMemory(void *ptr);
+static PaSampleFormat WaveToPaFormat(const WAVEFORMATEXTENSIBLE *fmtext);
+
+// WinRT (UWP) device list
+#ifdef PA_WINRT
+typedef struct PaWasapiWinrtDeviceInfo
+{
+ WCHAR id[PA_WASAPI_DEVICE_ID_LEN];
+ WCHAR name[PA_WASAPI_DEVICE_NAME_LEN];
+ EndpointFormFactor formFactor;
+}
+PaWasapiWinrtDeviceInfo;
+typedef struct PaWasapiWinrtDeviceListRole
+{
+ WCHAR defaultId[PA_WASAPI_DEVICE_ID_LEN];
+ PaWasapiWinrtDeviceInfo devices[PA_WASAPI_DEVICE_MAX_COUNT];
+ UINT32 deviceCount;
+}
+PaWasapiWinrtDeviceListRole;
+typedef struct PaWasapiWinrtDeviceList
+{
+ PaWasapiWinrtDeviceListRole render;
+ PaWasapiWinrtDeviceListRole capture;
+}
+PaWasapiWinrtDeviceList;
+static PaWasapiWinrtDeviceList g_DeviceListInfo = { 0 };
+#endif
+
+// WinRT (UWP) device list context
+#ifdef PA_WINRT
+typedef struct PaWasapiWinrtDeviceListContextEntry
+{
+ PaWasapiWinrtDeviceInfo *info;
+ EDataFlow flow;
+}
+PaWasapiWinrtDeviceListContextEntry;
+typedef struct PaWasapiWinrtDeviceListContext
+{
+ PaWasapiWinrtDeviceListContextEntry devices[PA_WASAPI_DEVICE_MAX_COUNT * 2];
+}
+PaWasapiWinrtDeviceListContext;
+#endif
+
+// ------------------------------------------------------------------------------------------
+#define LogHostError(HRES) __LogHostError(HRES, __FUNCTION__, __FILE__, __LINE__)
+static HRESULT __LogHostError(HRESULT res, const char *func, const char *file, int line)
+{
+ const char *text = NULL;
+ switch (res)
+ {
+ case S_OK: return res;
+ case E_POINTER :text ="E_POINTER"; break;
+ case E_INVALIDARG :text ="E_INVALIDARG"; break;
+
+ case AUDCLNT_E_NOT_INITIALIZED :text ="AUDCLNT_E_NOT_INITIALIZED"; break;
+ case AUDCLNT_E_ALREADY_INITIALIZED :text ="AUDCLNT_E_ALREADY_INITIALIZED"; break;
+ case AUDCLNT_E_WRONG_ENDPOINT_TYPE :text ="AUDCLNT_E_WRONG_ENDPOINT_TYPE"; break;
+ case AUDCLNT_E_DEVICE_INVALIDATED :text ="AUDCLNT_E_DEVICE_INVALIDATED"; break;
+ case AUDCLNT_E_NOT_STOPPED :text ="AUDCLNT_E_NOT_STOPPED"; break;
+ case AUDCLNT_E_BUFFER_TOO_LARGE :text ="AUDCLNT_E_BUFFER_TOO_LARGE"; break;
+ case AUDCLNT_E_OUT_OF_ORDER :text ="AUDCLNT_E_OUT_OF_ORDER"; break;
+ case AUDCLNT_E_UNSUPPORTED_FORMAT :text ="AUDCLNT_E_UNSUPPORTED_FORMAT"; break;
+ case AUDCLNT_E_INVALID_SIZE :text ="AUDCLNT_E_INVALID_SIZE"; break;
+ case AUDCLNT_E_DEVICE_IN_USE :text ="AUDCLNT_E_DEVICE_IN_USE"; break;
+ case AUDCLNT_E_BUFFER_OPERATION_PENDING :text ="AUDCLNT_E_BUFFER_OPERATION_PENDING"; break;
+ case AUDCLNT_E_THREAD_NOT_REGISTERED :text ="AUDCLNT_E_THREAD_NOT_REGISTERED"; break;
+ case AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED :text ="AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED"; break;
+ case AUDCLNT_E_ENDPOINT_CREATE_FAILED :text ="AUDCLNT_E_ENDPOINT_CREATE_FAILED"; break;
+ case AUDCLNT_E_SERVICE_NOT_RUNNING :text ="AUDCLNT_E_SERVICE_NOT_RUNNING"; break;
+ case AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED :text ="AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED"; break;
+ case AUDCLNT_E_EXCLUSIVE_MODE_ONLY :text ="AUDCLNT_E_EXCLUSIVE_MODE_ONLY"; break;
+ case AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL :text ="AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL"; break;
+ case AUDCLNT_E_EVENTHANDLE_NOT_SET :text ="AUDCLNT_E_EVENTHANDLE_NOT_SET"; break;
+ case AUDCLNT_E_INCORRECT_BUFFER_SIZE :text ="AUDCLNT_E_INCORRECT_BUFFER_SIZE"; break;
+ case AUDCLNT_E_BUFFER_SIZE_ERROR :text ="AUDCLNT_E_BUFFER_SIZE_ERROR"; break;
+ case AUDCLNT_E_CPUUSAGE_EXCEEDED :text ="AUDCLNT_E_CPUUSAGE_EXCEEDED"; break;
+ case AUDCLNT_E_BUFFER_ERROR :text ="AUDCLNT_E_BUFFER_ERROR"; break;
+ case AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED :text ="AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED"; break;
+ case AUDCLNT_E_INVALID_DEVICE_PERIOD :text ="AUDCLNT_E_INVALID_DEVICE_PERIOD"; break;
+
+#ifdef AUDCLNT_E_INVALID_STREAM_FLAG
+ case AUDCLNT_E_INVALID_STREAM_FLAG :text ="AUDCLNT_E_INVALID_STREAM_FLAG"; break;
+#endif
+#ifdef AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE
+ case AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE :text ="AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE"; break;
+#endif
+#ifdef AUDCLNT_E_OUT_OF_OFFLOAD_RESOURCES
+ case AUDCLNT_E_OUT_OF_OFFLOAD_RESOURCES :text ="AUDCLNT_E_OUT_OF_OFFLOAD_RESOURCES"; break;
+#endif
+#ifdef AUDCLNT_E_OFFLOAD_MODE_ONLY
+ case AUDCLNT_E_OFFLOAD_MODE_ONLY :text ="AUDCLNT_E_OFFLOAD_MODE_ONLY"; break;
+#endif
+#ifdef AUDCLNT_E_NONOFFLOAD_MODE_ONLY
+ case AUDCLNT_E_NONOFFLOAD_MODE_ONLY :text ="AUDCLNT_E_NONOFFLOAD_MODE_ONLY"; break;
+#endif
+#ifdef AUDCLNT_E_RESOURCES_INVALIDATED
+ case AUDCLNT_E_RESOURCES_INVALIDATED :text ="AUDCLNT_E_RESOURCES_INVALIDATED"; break;
+#endif
+#ifdef AUDCLNT_E_RAW_MODE_UNSUPPORTED
+ case AUDCLNT_E_RAW_MODE_UNSUPPORTED :text ="AUDCLNT_E_RAW_MODE_UNSUPPORTED"; break;
+#endif
+#ifdef AUDCLNT_E_ENGINE_PERIODICITY_LOCKED
+ case AUDCLNT_E_ENGINE_PERIODICITY_LOCKED :text ="AUDCLNT_E_ENGINE_PERIODICITY_LOCKED"; break;
+#endif
+#ifdef AUDCLNT_E_ENGINE_FORMAT_LOCKED
+ case AUDCLNT_E_ENGINE_FORMAT_LOCKED :text ="AUDCLNT_E_ENGINE_FORMAT_LOCKED"; break;
+#endif
+
+ case AUDCLNT_S_BUFFER_EMPTY :text ="AUDCLNT_S_BUFFER_EMPTY"; break;
+ case AUDCLNT_S_THREAD_ALREADY_REGISTERED :text ="AUDCLNT_S_THREAD_ALREADY_REGISTERED"; break;
+ case AUDCLNT_S_POSITION_STALLED :text ="AUDCLNT_S_POSITION_STALLED"; break;
+
+ // other windows common errors:
+ case CO_E_NOTINITIALIZED :text ="CO_E_NOTINITIALIZED: you must call CoInitialize() before Pa_OpenStream()"; break;
+
+ default:
+ text = "UNKNOWN ERROR";
+ }
+ PRINT(("WASAPI ERROR HRESULT: 0x%X : %s\n [FUNCTION: %s FILE: %s {LINE: %d}]\n", res, text, func, file, line));
+#ifndef PA_ENABLE_DEBUG_OUTPUT
+ (void)func; (void)file; (void)line;
+#endif
+ PA_SKELETON_SET_LAST_HOST_ERROR(res, text);
+ return res;
+}
+
+// ------------------------------------------------------------------------------------------
+#define LogPaError(PAERR) __LogPaError(PAERR, __FUNCTION__, __FILE__, __LINE__)
+static PaError __LogPaError(PaError err, const char *func, const char *file, int line)
+{
+ if (err == paNoError)
+ return err;
+
+ PRINT(("WASAPI ERROR PAERROR: %i : %s\n [FUNCTION: %s FILE: %s {LINE: %d}]\n", err, Pa_GetErrorText(err), func, file, line));
+#ifndef PA_ENABLE_DEBUG_OUTPUT
+ (void)func; (void)file; (void)line;
+#endif
+ return err;
+}
+
+// ------------------------------------------------------------------------------------------
+/*! \class ThreadSleepScheduler
+ Allows to emulate thread sleep of less than 1 millisecond under Windows. Scheduler
+ calculates number of times the thread must run until next sleep of 1 millisecond.
+ It does not make thread sleeping for real number of microseconds but rather controls
+ how many of imaginary microseconds the thread task can allow thread to sleep.
+*/
+typedef struct ThreadIdleScheduler
+{
+ UINT32 m_idle_microseconds; //!< number of microseconds to sleep
+ UINT32 m_next_sleep; //!< next sleep round
+ UINT32 m_i; //!< current round iterator position
+ UINT32 m_resolution; //!< resolution in number of milliseconds
+}
+ThreadIdleScheduler;
+
+//! Setup scheduler.
+static void ThreadIdleScheduler_Setup(ThreadIdleScheduler *sched, UINT32 resolution, UINT32 microseconds)
+{
+ assert(microseconds != 0);
+ assert(resolution != 0);
+ assert((resolution * 1000) >= microseconds);
+
+ memset(sched, 0, sizeof(*sched));
+
+ sched->m_idle_microseconds = microseconds;
+ sched->m_resolution = resolution;
+ sched->m_next_sleep = (resolution * 1000) / microseconds;
+}
+
+//! Iterate and check if can sleep.
+static inline UINT32 ThreadIdleScheduler_NextSleep(ThreadIdleScheduler *sched)
+{
+ // advance and check if thread can sleep
+ if (++sched->m_i == sched->m_next_sleep)
+ {
+ sched->m_i = 0;
+ return sched->m_resolution;
+ }
+ return 0;
+}
+
+// ------------------------------------------------------------------------------------------
+typedef struct _SystemTimer
+{
+ INT32 granularity;
+
+} SystemTimer;
+static LARGE_INTEGER g_SystemTimerFrequency;
+static BOOL g_SystemTimerUseQpc = FALSE;
+
+//! Set granularity of the system timer.
+static BOOL SystemTimer_SetGranularity(SystemTimer *timer, UINT32 granularity)
+{
+#ifndef PA_WINRT
+ TIMECAPS caps;
+
+ timer->granularity = granularity;
+
+ if (timeGetDevCaps(&caps, sizeof(caps)) == MMSYSERR_NOERROR)
+ {
+ if (timer->granularity < (INT32)caps.wPeriodMin)
+ timer->granularity = (INT32)caps.wPeriodMin;
+ }
+
+ if (timeBeginPeriod(timer->granularity) != TIMERR_NOERROR)
+ {
+ PRINT(("SetSystemTimer: timeBeginPeriod(1) failed!\n"));
+
+ timer->granularity = 10;
+ return FALSE;
+ }
+#else
+ (void)granularity;
+
+ // UWP does not support increase of the timer precision change and thus calling WaitForSingleObject with anything
+ // below 10 milliseconds will cause underruns for input and output stream.
+ timer->granularity = 10;
+#endif
+
+ return TRUE;
+}
+
+//! Restore granularity of the system timer.
+static void SystemTimer_RestoreGranularity(SystemTimer *timer)
+{
+#ifndef PA_WINRT
+ if (timer->granularity != 0)
+ {
+ if (timeEndPeriod(timer->granularity) != TIMERR_NOERROR)
+ {
+ PRINT(("RestoreSystemTimer: timeEndPeriod(1) failed!\n"));
+ }
+ }
+#else
+ (void)timer;
+#endif
+}
+
+//! Initialize high-resolution time getter.
+static void SystemTimer_InitializeTimeGetter()
+{
+ g_SystemTimerUseQpc = QueryPerformanceFrequency(&g_SystemTimerFrequency);
+}
+
+//! Get high-resolution time in milliseconds (using QPC by default).
+static inline LONGLONG SystemTimer_GetTime(SystemTimer *timer)
+{
+ (void)timer;
+
+ // QPC: https://docs.microsoft.com/en-us/windows/win32/sysinfo/acquiring-high-resolution-time-stamps
+ if (g_SystemTimerUseQpc)
+ {
+ LARGE_INTEGER now;
+ QueryPerformanceCounter(&now);
+ return (now.QuadPart * 1000LL) / g_SystemTimerFrequency.QuadPart;
+ }
+ else
+ {
+ #ifdef PA_WINRT
+ return GetTickCount64();
+ #else
+ return timeGetTime();
+ #endif
+ }
+}
+
+// ------------------------------------------------------------------------------------------
+/*static double nano100ToMillis(REFERENCE_TIME ref)
+{
+ // 1 nano = 0.000000001 seconds
+ //100 nano = 0.0000001 seconds
+ //100 nano = 0.0001 milliseconds
+ return ((double)ref) * 0.0001;
+}*/
+
+// ------------------------------------------------------------------------------------------
+static double nano100ToSeconds(REFERENCE_TIME ref)
+{
+ // 1 nano = 0.000000001 seconds
+ //100 nano = 0.0000001 seconds
+ //100 nano = 0.0001 milliseconds
+ return ((double)ref) * 0.0000001;
+}
+
+// ------------------------------------------------------------------------------------------
+/*static REFERENCE_TIME MillisTonano100(double ref)
+{
+ // 1 nano = 0.000000001 seconds
+ //100 nano = 0.0000001 seconds
+ //100 nano = 0.0001 milliseconds
+ return (REFERENCE_TIME)(ref / 0.0001);
+}*/
+
+// ------------------------------------------------------------------------------------------
+static REFERENCE_TIME SecondsTonano100(double ref)
+{
+ // 1 nano = 0.000000001 seconds
+ //100 nano = 0.0000001 seconds
+ //100 nano = 0.0001 milliseconds
+ return (REFERENCE_TIME)(ref / 0.0000001);
+}
+
+// ------------------------------------------------------------------------------------------
+// Makes Hns period from frames and sample rate
+static REFERENCE_TIME MakeHnsPeriod(UINT32 nFrames, DWORD nSamplesPerSec)
+{
+ return (REFERENCE_TIME)((10000.0 * 1000 / nSamplesPerSec * nFrames) + 0.5);
+}
+
+// ------------------------------------------------------------------------------------------
+// Converts PaSampleFormat to bits per sample value
+// Note: paCustomFormat stands for 8.24 format (24-bits inside 32-bit containers)
+static WORD PaSampleFormatToBitsPerSample(PaSampleFormat format_id)
+{
+ switch (format_id & ~paNonInterleaved)
+ {
+ case paFloat32:
+ case paInt32: return 32;
+ case paCustomFormat:
+ case paInt24: return 24;
+ case paInt16: return 16;
+ case paInt8:
+ case paUInt8: return 8;
+ }
+ return 0;
+}
+
+// ------------------------------------------------------------------------------------------
+// Convert PaSampleFormat to valid sample format for I/O, e.g. if paCustomFormat is specified
+// it will be converted to paInt32, other formats pass through
+// Note: paCustomFormat stands for 8.24 format (24-bits inside 32-bit containers)
+static PaSampleFormat GetSampleFormatForIO(PaSampleFormat format_id)
+{
+ return ((format_id & ~paNonInterleaved) == paCustomFormat ?
+ (paInt32 | (format_id & paNonInterleaved ? paNonInterleaved : 0)) : format_id);
+}
+
+// ------------------------------------------------------------------------------------------
+// Converts Hns period into number of frames
+static UINT32 MakeFramesFromHns(REFERENCE_TIME hnsPeriod, UINT32 nSamplesPerSec)
+{
+ UINT32 nFrames = (UINT32)( // frames =
+ 1.0 * hnsPeriod * // hns *
+ nSamplesPerSec / // (frames / s) /
+ 1000 / // (ms / s) /
+ 10000 // (hns / s) /
+ + 0.5 // rounding
+ );
+ return nFrames;
+}
+
+// Aligning function type
+typedef UINT32 (*ALIGN_FUNC) (UINT32 v, UINT32 align);
+
+// ------------------------------------------------------------------------------------------
+// Aligns 'v' backwards
+static UINT32 ALIGN_BWD(UINT32 v, UINT32 align)
+{
+ return ((v - (align ? v % align : 0)));
+}
+
+// ------------------------------------------------------------------------------------------
+// Aligns 'v' forward
+static UINT32 ALIGN_FWD(UINT32 v, UINT32 align)
+{
+ UINT32 remainder = (align ? (v % align) : 0);
+ if (remainder == 0)
+ return v;
+ return v + (align - remainder);
+}
+
+// ------------------------------------------------------------------------------------------
+// Get next value power of 2
+static UINT32 ALIGN_NEXT_POW2(UINT32 v)
+{
+ UINT32 v2 = 1;
+ while (v > (v2 <<= 1)) { }
+ v = v2;
+ return v;
+}
+
+// ------------------------------------------------------------------------------------------
+// Aligns WASAPI buffer to 128 byte packet boundary. HD Audio will fail to play if buffer
+// is misaligned. This problem was solved in Windows 7 were AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED
+// is thrown although we must align for Vista anyway.
+static UINT32 AlignFramesPerBuffer(UINT32 nFrames, UINT32 nBlockAlign, ALIGN_FUNC pAlignFunc)
+{
+#define HDA_PACKET_SIZE (128)
+
+ UINT32 bytes = nFrames * nBlockAlign;
+ UINT32 packets;
+
+ // align to a HD Audio packet size
+ bytes = pAlignFunc(bytes, HDA_PACKET_SIZE);
+
+ // atlest 1 frame must be available
+ if (bytes < HDA_PACKET_SIZE)
+ bytes = HDA_PACKET_SIZE;
+
+ packets = bytes / HDA_PACKET_SIZE;
+ bytes = packets * HDA_PACKET_SIZE;
+ nFrames = bytes / nBlockAlign;
+
+ // WASAPI frames are always aligned to at least 8
+ nFrames = ALIGN_FWD(nFrames, 8);
+
+ return nFrames;
+
+#undef HDA_PACKET_SIZE
+}
+
+// ------------------------------------------------------------------------------------------
+static UINT32 GetFramesSleepTime(REFERENCE_TIME nFrames, REFERENCE_TIME nSamplesPerSec)
+{
+ REFERENCE_TIME nDuration;
+ if (nSamplesPerSec == 0)
+ return 0;
+
+#define REFTIMES_PER_SEC 10000000LL
+#define REFTIMES_PER_MILLISEC 10000LL
+
+ // Calculate the actual duration of the allocated buffer.
+ nDuration = (REFTIMES_PER_SEC * nFrames) / nSamplesPerSec;
+ return (UINT32)(nDuration / REFTIMES_PER_MILLISEC);
+
+#undef REFTIMES_PER_SEC
+#undef REFTIMES_PER_MILLISEC
+}
+
+// ------------------------------------------------------------------------------------------
+static UINT32 GetFramesSleepTimeMicroseconds(REFERENCE_TIME nFrames, REFERENCE_TIME nSamplesPerSec)
+{
+ REFERENCE_TIME nDuration;
+ if (nSamplesPerSec == 0)
+ return 0;
+
+#define REFTIMES_PER_SEC 10000000LL
+#define REFTIMES_PER_MILLISEC 10000LL
+
+ // Calculate the actual duration of the allocated buffer.
+ nDuration = (REFTIMES_PER_SEC * nFrames) / nSamplesPerSec;
+ return (UINT32)(nDuration / 10);
+
+#undef REFTIMES_PER_SEC
+#undef REFTIMES_PER_MILLISEC
+}
+
+// ------------------------------------------------------------------------------------------
+#ifndef PA_WINRT
+static BOOL SetupAVRT()
+{
+ hDInputDLL = LoadLibraryA("avrt.dll");
+ if (hDInputDLL == NULL)
+ return FALSE;
+
+ _GetProc(pAvRtCreateThreadOrderingGroup, FAvRtCreateThreadOrderingGroup, "AvRtCreateThreadOrderingGroup");
+ _GetProc(pAvRtDeleteThreadOrderingGroup, FAvRtDeleteThreadOrderingGroup, "AvRtDeleteThreadOrderingGroup");
+ _GetProc(pAvRtWaitOnThreadOrderingGroup, FAvRtWaitOnThreadOrderingGroup, "AvRtWaitOnThreadOrderingGroup");
+ _GetProc(pAvSetMmThreadCharacteristics, FAvSetMmThreadCharacteristics, "AvSetMmThreadCharacteristicsA");
+ _GetProc(pAvRevertMmThreadCharacteristics,FAvRevertMmThreadCharacteristics,"AvRevertMmThreadCharacteristics");
+ _GetProc(pAvSetMmThreadPriority, FAvSetMmThreadPriority, "AvSetMmThreadPriority");
+
+ return pAvRtCreateThreadOrderingGroup &&
+ pAvRtDeleteThreadOrderingGroup &&
+ pAvRtWaitOnThreadOrderingGroup &&
+ pAvSetMmThreadCharacteristics &&
+ pAvRevertMmThreadCharacteristics &&
+ pAvSetMmThreadPriority;
+}
+#endif
+
+// ------------------------------------------------------------------------------------------
+static void CloseAVRT()
+{
+#ifndef PA_WINRT
+ if (hDInputDLL != NULL)
+ FreeLibrary(hDInputDLL);
+ hDInputDLL = NULL;
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+static BOOL IsWow64()
+{
+#ifndef PA_WINRT
+
+ // http://msdn.microsoft.com/en-us/library/ms684139(VS.85).aspx
+
+ typedef BOOL (WINAPI *LPFN_ISWOW64PROCESS) (HANDLE, PBOOL);
+ LPFN_ISWOW64PROCESS fnIsWow64Process;
+
+ BOOL bIsWow64 = FALSE;
+
+ // IsWow64Process is not available on all supported versions of Windows.
+ // Use GetModuleHandle to get a handle to the DLL that contains the function
+ // and GetProcAddress to get a pointer to the function if available.
+
+ fnIsWow64Process = (LPFN_ISWOW64PROCESS) GetProcAddress(
+ GetModuleHandleA("kernel32"), "IsWow64Process");
+
+ if (fnIsWow64Process == NULL)
+ return FALSE;
+
+ if (!fnIsWow64Process(GetCurrentProcess(), &bIsWow64))
+ return FALSE;
+
+ return bIsWow64;
+
+#else
+
+ return FALSE;
+
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+typedef enum EWindowsVersion
+{
+ WINDOWS_UNKNOWN = 0,
+ WINDOWS_VISTA_SERVER2008,
+ WINDOWS_7_SERVER2008R2,
+ WINDOWS_8_SERVER2012,
+ WINDOWS_8_1_SERVER2012R2,
+ WINDOWS_10_SERVER2016,
+ WINDOWS_FUTURE
+}
+EWindowsVersion;
+// Alternative way for checking Windows version (allows to check version on Windows 8.1 and up)
+#ifndef PA_WINRT
+static BOOL IsWindowsVersionOrGreater(WORD wMajorVersion, WORD wMinorVersion, WORD wServicePackMajor)
+{
+ typedef ULONGLONG (NTAPI *LPFN_VERSETCONDITIONMASK)(ULONGLONG ConditionMask, DWORD TypeMask, BYTE Condition);
+ typedef BOOL (WINAPI *LPFN_VERIFYVERSIONINFO)(LPOSVERSIONINFOEXA lpVersionInformation, DWORD dwTypeMask, DWORDLONG dwlConditionMask);
+
+ LPFN_VERSETCONDITIONMASK fnVerSetConditionMask;
+ LPFN_VERIFYVERSIONINFO fnVerifyVersionInfo;
+ OSVERSIONINFOEXA osvi = { sizeof(osvi), 0, 0, 0, 0, {0}, 0, 0 };
+ DWORDLONG dwlConditionMask;
+
+ fnVerSetConditionMask = (LPFN_VERSETCONDITIONMASK)GetProcAddress(GetModuleHandleA("kernel32"), "VerSetConditionMask");
+ fnVerifyVersionInfo = (LPFN_VERIFYVERSIONINFO)GetProcAddress(GetModuleHandleA("kernel32"), "VerifyVersionInfoA");
+
+ if ((fnVerSetConditionMask == NULL) || (fnVerifyVersionInfo == NULL))
+ return FALSE;
+
+ dwlConditionMask = fnVerSetConditionMask(
+ fnVerSetConditionMask(
+ fnVerSetConditionMask(
+ 0, VER_MAJORVERSION, VER_GREATER_EQUAL),
+ VER_MINORVERSION, VER_GREATER_EQUAL),
+ VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
+
+ osvi.dwMajorVersion = wMajorVersion;
+ osvi.dwMinorVersion = wMinorVersion;
+ osvi.wServicePackMajor = wServicePackMajor;
+
+ return (fnVerifyVersionInfo(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, dwlConditionMask) != FALSE);
+}
+#endif
+// Get Windows version
+static EWindowsVersion GetWindowsVersion()
+{
+#ifndef PA_WINRT
+ static EWindowsVersion version = WINDOWS_UNKNOWN;
+
+ if (version == WINDOWS_UNKNOWN)
+ {
+ DWORD dwMajorVersion = 0xFFFFFFFFU, dwMinorVersion = 0, dwBuild = 0;
+
+ // RTL_OSVERSIONINFOW equals OSVERSIONINFOW but it is missing inb MinGW winnt.h header,
+ // thus use OSVERSIONINFOW for greater portability
+ typedef NTSTATUS (WINAPI *LPFN_RTLGETVERSION)(POSVERSIONINFOW lpVersionInformation);
+ LPFN_RTLGETVERSION fnRtlGetVersion;
+
+ #define NTSTATUS_SUCCESS ((NTSTATUS)0x00000000L)
+
+ // RtlGetVersion must be able to provide true Windows version (Windows 10 may be reported as Windows 8
+ // by GetVersion API)
+ if ((fnRtlGetVersion = (LPFN_RTLGETVERSION)GetProcAddress(GetModuleHandleA("ntdll"), "RtlGetVersion")) != NULL)
+ {
+ OSVERSIONINFOW ver = { sizeof(OSVERSIONINFOW), 0, 0, 0, 0, {0} };
+
+ PRINT(("WASAPI: getting Windows version with RtlGetVersion()\n"));
+
+ if (fnRtlGetVersion(&ver) == NTSTATUS_SUCCESS)
+ {
+ dwMajorVersion = ver.dwMajorVersion;
+ dwMinorVersion = ver.dwMinorVersion;
+ dwBuild = ver.dwBuildNumber;
+ }
+ }
+
+ #undef NTSTATUS_SUCCESS
+
+ // fallback to GetVersion if RtlGetVersion is missing
+ if (dwMajorVersion == 0xFFFFFFFFU)
+ {
+ typedef DWORD (WINAPI *LPFN_GETVERSION)(VOID);
+ LPFN_GETVERSION fnGetVersion;
+
+ if ((fnGetVersion = (LPFN_GETVERSION)GetProcAddress(GetModuleHandleA("kernel32"), "GetVersion")) != NULL)
+ {
+ DWORD dwVersion;
+
+ PRINT(("WASAPI: getting Windows version with GetVersion()\n"));
+
+ dwVersion = fnGetVersion();
+
+ dwMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion)));
+ dwMinorVersion = (DWORD)(HIBYTE(LOWORD(dwVersion)));
+
+ if (dwVersion < 0x80000000)
+ dwBuild = (DWORD)(HIWORD(dwVersion));
+ }
+ }
+
+ if (dwMajorVersion != 0xFFFFFFFFU)
+ {
+ switch (dwMajorVersion)
+ {
+ case 0:
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ case 5:
+ break; // skip lower
+ case 6:
+ switch (dwMinorVersion)
+ {
+ case 0: version = WINDOWS_VISTA_SERVER2008; break;
+ case 1: version = WINDOWS_7_SERVER2008R2; break;
+ case 2: version = WINDOWS_8_SERVER2012; break;
+ case 3: version = WINDOWS_8_1_SERVER2012R2; break;
+ default: version = WINDOWS_FUTURE; break;
+ }
+ break;
+ case 10:
+ switch (dwMinorVersion)
+ {
+ case 0: version = WINDOWS_10_SERVER2016; break;
+ default: version = WINDOWS_FUTURE; break;
+ }
+ break;
+ default:
+ version = WINDOWS_FUTURE;
+ break;
+ }
+ }
+ // fallback to VerifyVersionInfo if RtlGetVersion and GetVersion are missing
+ else
+ {
+ PRINT(("WASAPI: getting Windows version with VerifyVersionInfo()\n"));
+
+ if (IsWindowsVersionOrGreater(10, 0, 0))
+ version = WINDOWS_10_SERVER2016;
+ else
+ if (IsWindowsVersionOrGreater(6, 3, 0))
+ version = WINDOWS_8_1_SERVER2012R2;
+ else
+ if (IsWindowsVersionOrGreater(6, 2, 0))
+ version = WINDOWS_8_SERVER2012;
+ else
+ if (IsWindowsVersionOrGreater(6, 1, 0))
+ version = WINDOWS_7_SERVER2008R2;
+ else
+ if (IsWindowsVersionOrGreater(6, 0, 0))
+ version = WINDOWS_VISTA_SERVER2008;
+ else
+ version = WINDOWS_FUTURE;
+ }
+
+ PRINT(("WASAPI: Windows version = %d\n", version));
+ }
+
+ return version;
+#else
+ #if (_WIN32_WINNT >= _WIN32_WINNT_WIN10)
+ return WINDOWS_10_SERVER2016;
+ #else
+ return WINDOWS_8_SERVER2012;
+ #endif
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+static BOOL UseWOW64Workaround()
+{
+ // note: WOW64 bug is common to Windows Vista x64, thus we fall back to safe Poll-driven
+ // method. Windows 7 x64 seems has WOW64 bug fixed.
+
+ return (IsWow64() && (GetWindowsVersion() == WINDOWS_VISTA_SERVER2008));
+}
+
+// ------------------------------------------------------------------------------------------
+static UINT32 GetAudioClientVersion()
+{
+ if (GetWindowsVersion() >= WINDOWS_10_SERVER2016)
+ return 3;
+ else
+ if (GetWindowsVersion() >= WINDOWS_8_SERVER2012)
+ return 2;
+
+ return 1;
+}
+
+// ------------------------------------------------------------------------------------------
+static const IID *GetAudioClientIID()
+{
+ static const IID *cli_iid = NULL;
+ if (cli_iid == NULL)
+ {
+ UINT32 cli_version = GetAudioClientVersion();
+ switch (cli_version)
+ {
+ case 3: cli_iid = &pa_IID_IAudioClient3; break;
+ case 2: cli_iid = &pa_IID_IAudioClient2; break;
+ default: cli_iid = &pa_IID_IAudioClient; break;
+ }
+
+ PRINT(("WASAPI: IAudioClient version = %d\n", cli_version));
+ }
+
+ return cli_iid;
+}
+
+// ------------------------------------------------------------------------------------------
+typedef enum EMixDirection
+{
+ MIX_DIR__1TO2, //!< mix one channel to L and R
+ MIX_DIR__2TO1, //!< mix L and R channels to one channel
+ MIX_DIR__2TO1_L //!< mix only L channel (of total 2 channels) to one channel
+}
+EMixDirection;
+
+// ------------------------------------------------------------------------------------------
+#define _WASAPI_MONO_TO_STEREO_MIXER_1_TO_2(TYPE)\
+ TYPE * __restrict to = (TYPE *)__to;\
+ const TYPE * __restrict from = (const TYPE *)__from;\
+ const TYPE * __restrict end = from + count;\
+ while (from != end)\
+ {\
+ to[0] = to[1] = *from ++;\
+ to += 2;\
+ }
+
+// ------------------------------------------------------------------------------------------
+#define _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_FLT32(TYPE)\
+ TYPE * __restrict to = (TYPE *)__to;\
+ const TYPE * __restrict from = (const TYPE *)__from;\
+ const TYPE * __restrict end = to + count;\
+ while (to != end)\
+ {\
+ *to ++ = (TYPE)((float)(from[0] + from[1]) * 0.5f);\
+ from += 2;\
+ }
+
+// ------------------------------------------------------------------------------------------
+#define _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_INT32(TYPE)\
+ TYPE * __restrict to = (TYPE *)__to;\
+ const TYPE * __restrict from = (const TYPE *)__from;\
+ const TYPE * __restrict end = to + count;\
+ while (to != end)\
+ {\
+ *to ++ = (TYPE)(((INT32)from[0] + (INT32)from[1]) >> 1);\
+ from += 2;\
+ }
+
+// ------------------------------------------------------------------------------------------
+#define _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_INT64(TYPE)\
+ TYPE * __restrict to = (TYPE *)__to;\
+ const TYPE * __restrict from = (const TYPE *)__from;\
+ const TYPE * __restrict end = to + count;\
+ while (to != end)\
+ {\
+ *to ++ = (TYPE)(((INT64)from[0] + (INT64)from[1]) >> 1);\
+ from += 2;\
+ }
+
+// ------------------------------------------------------------------------------------------
+#define _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_L(TYPE)\
+ TYPE * __restrict to = (TYPE *)__to;\
+ const TYPE * __restrict from = (const TYPE *)__from;\
+ const TYPE * __restrict end = to + count;\
+ while (to != end)\
+ {\
+ *to ++ = from[0];\
+ from += 2;\
+ }
+
+// ------------------------------------------------------------------------------------------
+static void _MixMonoToStereo_1TO2_8(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_1_TO_2(BYTE); }
+static void _MixMonoToStereo_1TO2_16(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_1_TO_2(short); }
+static void _MixMonoToStereo_1TO2_8_24(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_1_TO_2(int); /* !!! int24 data is contained in 32-bit containers*/ }
+static void _MixMonoToStereo_1TO2_32(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_1_TO_2(int); }
+static void _MixMonoToStereo_1TO2_32f(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_1_TO_2(float); }
+static void _MixMonoToStereo_1TO2_24(void *__to, const void *__from, UINT32 count)
+{
+ const UCHAR * __restrict from = (const UCHAR *)__from;
+ UCHAR * __restrict to = (UCHAR *)__to;
+ const UCHAR * __restrict end = to + (count * (2 * 3));
+
+ while (to != end)
+ {
+ to[0] = to[3] = from[0];
+ to[1] = to[4] = from[1];
+ to[2] = to[5] = from[2];
+
+ from += 3;
+ to += (2 * 3);
+ }
+}
+
+// ------------------------------------------------------------------------------------------
+static void _MixMonoToStereo_2TO1_8(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_INT32(BYTE); }
+static void _MixMonoToStereo_2TO1_16(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_INT32(short); }
+static void _MixMonoToStereo_2TO1_8_24(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_INT32(int); /* !!! int24 data is contained in 32-bit containers*/ }
+static void _MixMonoToStereo_2TO1_32(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_INT64(int); }
+static void _MixMonoToStereo_2TO1_32f(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_FLT32(float); }
+static void _MixMonoToStereo_2TO1_24(void *__to, const void *__from, UINT32 count)
+{
+ const UCHAR * __restrict from = (const UCHAR *)__from;
+ UCHAR * __restrict to = (UCHAR *)__to;
+ const UCHAR * __restrict end = to + (count * 3);
+ PaInt32 tempL, tempR, tempM;
+
+ while (to != end)
+ {
+ tempL = (((PaInt32)from[0]) << 8);
+ tempL = tempL | (((PaInt32)from[1]) << 16);
+ tempL = tempL | (((PaInt32)from[2]) << 24);
+
+ tempR = (((PaInt32)from[3]) << 8);
+ tempR = tempR | (((PaInt32)from[4]) << 16);
+ tempR = tempR | (((PaInt32)from[5]) << 24);
+
+ tempM = (tempL + tempR) >> 1;
+
+ to[0] = (UCHAR)(tempM >> 8);
+ to[1] = (UCHAR)(tempM >> 16);
+ to[2] = (UCHAR)(tempM >> 24);
+
+ from += (2 * 3);
+ to += 3;
+ }
+}
+
+// ------------------------------------------------------------------------------------------
+static void _MixMonoToStereo_2TO1_8_L(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_L(BYTE); }
+static void _MixMonoToStereo_2TO1_16_L(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_L(short); }
+static void _MixMonoToStereo_2TO1_8_24_L(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_L(int); /* !!! int24 data is contained in 32-bit containers*/ }
+static void _MixMonoToStereo_2TO1_32_L(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_L(int); }
+static void _MixMonoToStereo_2TO1_32f_L(void *__to, const void *__from, UINT32 count) { _WASAPI_MONO_TO_STEREO_MIXER_2_TO_1_L(float); }
+static void _MixMonoToStereo_2TO1_24_L(void *__to, const void *__from, UINT32 count)
+{
+ const UCHAR * __restrict from = (const UCHAR *)__from;
+ UCHAR * __restrict to = (UCHAR *)__to;
+ const UCHAR * __restrict end = to + (count * 3);
+
+ while (to != end)
+ {
+ to[0] = from[0];
+ to[1] = from[1];
+ to[2] = from[2];
+
+ from += (2 * 3);
+ to += 3;
+ }
+}
+
+// ------------------------------------------------------------------------------------------
+static MixMonoToStereoF GetMonoToStereoMixer(const WAVEFORMATEXTENSIBLE *fmtext, EMixDirection dir)
+{
+ PaSampleFormat format = WaveToPaFormat(fmtext);
+
+ switch (dir)
+ {
+ case MIX_DIR__1TO2:
+ switch (format & ~paNonInterleaved)
+ {
+ case paUInt8: return _MixMonoToStereo_1TO2_8;
+ case paInt16: return _MixMonoToStereo_1TO2_16;
+ case paInt24: return (fmtext->Format.wBitsPerSample == 32 ? _MixMonoToStereo_1TO2_8_24 : _MixMonoToStereo_1TO2_24);
+ case paInt32: return _MixMonoToStereo_1TO2_32;
+ case paFloat32: return _MixMonoToStereo_1TO2_32f;
+ }
+ break;
+
+ case MIX_DIR__2TO1:
+ switch (format & ~paNonInterleaved)
+ {
+ case paUInt8: return _MixMonoToStereo_2TO1_8;
+ case paInt16: return _MixMonoToStereo_2TO1_16;
+ case paInt24: return (fmtext->Format.wBitsPerSample == 32 ? _MixMonoToStereo_2TO1_8_24 : _MixMonoToStereo_2TO1_24);
+ case paInt32: return _MixMonoToStereo_2TO1_32;
+ case paFloat32: return _MixMonoToStereo_2TO1_32f;
+ }
+ break;
+
+ case MIX_DIR__2TO1_L:
+ switch (format & ~paNonInterleaved)
+ {
+ case paUInt8: return _MixMonoToStereo_2TO1_8_L;
+ case paInt16: return _MixMonoToStereo_2TO1_16_L;
+ case paInt24: return (fmtext->Format.wBitsPerSample == 32 ? _MixMonoToStereo_2TO1_8_24_L : _MixMonoToStereo_2TO1_24_L);
+ case paInt32: return _MixMonoToStereo_2TO1_32_L;
+ case paFloat32: return _MixMonoToStereo_2TO1_32f_L;
+ }
+ break;
+ }
+
+ return NULL;
+}
+
+// ------------------------------------------------------------------------------------------
+#ifdef PA_WINRT
+typedef struct PaActivateAudioInterfaceCompletionHandler
+{
+ IActivateAudioInterfaceCompletionHandler parent;
+ volatile LONG refs;
+ volatile LONG done;
+ struct
+ {
+ const IID *iid;
+ void **obj;
+ }
+ in;
+ struct
+ {
+ HRESULT hr;
+ }
+ out;
+}
+PaActivateAudioInterfaceCompletionHandler;
+
+static HRESULT (STDMETHODCALLTYPE PaActivateAudioInterfaceCompletionHandler_QueryInterface)(
+ IActivateAudioInterfaceCompletionHandler *This, REFIID riid, void **ppvObject)
+{
+ PaActivateAudioInterfaceCompletionHandler *handler = (PaActivateAudioInterfaceCompletionHandler *)This;
+
+ // From MSDN:
+ // "The IAgileObject interface is a marker interface that indicates that an object
+ // is free threaded and can be called from any apartment."
+ if (IsEqualIID(riid, &IID_IUnknown) ||
+ IsEqualIID(riid, &IID_IAgileObject))
+ {
+ IActivateAudioInterfaceCompletionHandler_AddRef((IActivateAudioInterfaceCompletionHandler *)handler);
+ (*ppvObject) = handler;
+ return S_OK;
+ }
+
+ return E_NOINTERFACE;
+}
+
+static ULONG (STDMETHODCALLTYPE PaActivateAudioInterfaceCompletionHandler_AddRef)(
+ IActivateAudioInterfaceCompletionHandler *This)
+{
+ PaActivateAudioInterfaceCompletionHandler *handler = (PaActivateAudioInterfaceCompletionHandler *)This;
+
+ return InterlockedIncrement(&handler->refs);
+}
+
+static ULONG (STDMETHODCALLTYPE PaActivateAudioInterfaceCompletionHandler_Release)(
+ IActivateAudioInterfaceCompletionHandler *This)
+{
+ PaActivateAudioInterfaceCompletionHandler *handler = (PaActivateAudioInterfaceCompletionHandler *)This;
+ ULONG refs;
+
+ if ((refs = InterlockedDecrement(&handler->refs)) == 0)
+ {
+ PaUtil_FreeMemory(handler->parent.lpVtbl);
+ PaUtil_FreeMemory(handler);
+ }
+
+ return refs;
+}
+
+static HRESULT (STDMETHODCALLTYPE PaActivateAudioInterfaceCompletionHandler_ActivateCompleted)(
+ IActivateAudioInterfaceCompletionHandler *This, IActivateAudioInterfaceAsyncOperation *activateOperation)
+{
+ PaActivateAudioInterfaceCompletionHandler *handler = (PaActivateAudioInterfaceCompletionHandler *)This;
+
+ HRESULT hr = S_OK;
+ HRESULT hrActivateResult = S_OK;
+ IUnknown *punkAudioInterface = NULL;
+
+ // Check for a successful activation result
+ hr = IActivateAudioInterfaceAsyncOperation_GetActivateResult(activateOperation, &hrActivateResult, &punkAudioInterface);
+ if (SUCCEEDED(hr) && SUCCEEDED(hrActivateResult))
+ {
+ // Get pointer to the requested audio interface
+ IUnknown_QueryInterface(punkAudioInterface, handler->in.iid, handler->in.obj);
+ if ((*handler->in.obj) == NULL)
+ hrActivateResult = E_FAIL;
+ }
+ SAFE_RELEASE(punkAudioInterface);
+
+ if (SUCCEEDED(hr))
+ handler->out.hr = hrActivateResult;
+ else
+ handler->out.hr = hr;
+
+ // Got client object, stop busy waiting in ActivateAudioInterface
+ InterlockedExchange(&handler->done, TRUE);
+
+ return hr;
+}
+
+static IActivateAudioInterfaceCompletionHandler *CreateActivateAudioInterfaceCompletionHandler(const IID *iid, void **client)
+{
+ PaActivateAudioInterfaceCompletionHandler *handler = PaUtil_AllocateMemory(sizeof(PaActivateAudioInterfaceCompletionHandler));
+
+ memset(handler, 0, sizeof(*handler));
+
+ handler->parent.lpVtbl = PaUtil_AllocateMemory(sizeof(*handler->parent.lpVtbl));
+ handler->parent.lpVtbl->QueryInterface = &PaActivateAudioInterfaceCompletionHandler_QueryInterface;
+ handler->parent.lpVtbl->AddRef = &PaActivateAudioInterfaceCompletionHandler_AddRef;
+ handler->parent.lpVtbl->Release = &PaActivateAudioInterfaceCompletionHandler_Release;
+ handler->parent.lpVtbl->ActivateCompleted = &PaActivateAudioInterfaceCompletionHandler_ActivateCompleted;
+ handler->refs = 1;
+ handler->in.iid = iid;
+ handler->in.obj = client;
+
+ return (IActivateAudioInterfaceCompletionHandler *)handler;
+}
+#endif
+
+// ------------------------------------------------------------------------------------------
+#ifdef PA_WINRT
+static HRESULT WinRT_GetDefaultDeviceId(WCHAR *deviceId, UINT32 deviceIdMax, EDataFlow flow)
+{
+ switch (flow)
+ {
+ case eRender:
+ if (g_DeviceListInfo.render.defaultId[0] != 0)
+ wcsncpy_s(deviceId, deviceIdMax, g_DeviceListInfo.render.defaultId, wcslen(g_DeviceListInfo.render.defaultId));
+ else
+ StringFromGUID2(&DEVINTERFACE_AUDIO_RENDER, deviceId, deviceIdMax);
+ break;
+ case eCapture:
+ if (g_DeviceListInfo.capture.defaultId[0] != 0)
+ wcsncpy_s(deviceId, deviceIdMax, g_DeviceListInfo.capture.defaultId, wcslen(g_DeviceListInfo.capture.defaultId));
+ else
+ StringFromGUID2(&DEVINTERFACE_AUDIO_CAPTURE, deviceId, deviceIdMax);
+ break;
+ default:
+ return S_FALSE;
+ }
+
+ return S_OK;
+}
+#endif
+
+// ------------------------------------------------------------------------------------------
+#ifdef PA_WINRT
+static HRESULT WinRT_ActivateAudioInterface(const WCHAR *deviceId, const IID *iid, void **client)
+{
+ PaError result = paNoError;
+ HRESULT hr = S_OK;
+ IActivateAudioInterfaceAsyncOperation *asyncOp = NULL;
+ IActivateAudioInterfaceCompletionHandler *handler = CreateActivateAudioInterfaceCompletionHandler(iid, client);
+ PaActivateAudioInterfaceCompletionHandler *handlerImpl = (PaActivateAudioInterfaceCompletionHandler *)handler;
+ UINT32 sleepToggle = 0;
+
+ // Async operation will call back to IActivateAudioInterfaceCompletionHandler::ActivateCompleted
+ // which must be an agile interface implementation
+ hr = ActivateAudioInterfaceAsync(deviceId, iid, NULL, handler, &asyncOp);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+
+ // Wait in busy loop for async operation to complete
+ // Use Interlocked API here to ensure that ->done variable is read every time through the loop
+ while (SUCCEEDED(hr) && !InterlockedOr(&handlerImpl->done, 0))
+ {
+ Sleep(sleepToggle ^= 1);
+ }
+
+ hr = handlerImpl->out.hr;
+
+error:
+
+ SAFE_RELEASE(asyncOp);
+ SAFE_RELEASE(handler);
+
+ return hr;
+}
+#endif
+
+// ------------------------------------------------------------------------------------------
+static HRESULT ActivateAudioInterface(const PaWasapiDeviceInfo *deviceInfo, const PaWasapiStreamInfo *streamInfo,
+ IAudioClient **client)
+{
+ HRESULT hr;
+
+#ifndef PA_WINRT
+ if (FAILED(hr = IMMDevice_Activate(deviceInfo->device, GetAudioClientIID(), CLSCTX_ALL, NULL, (void **)client)))
+ return hr;
+#else
+ if (FAILED(hr = WinRT_ActivateAudioInterface(deviceInfo->deviceId, GetAudioClientIID(), (void **)client)))
+ return hr;
+#endif
+
+ // Set audio client options (applicable only to IAudioClient2+): options may affect the audio format
+ // support by IAudioClient implementation and therefore we should set them before GetClosestFormat()
+ // in order to correctly match the requested format
+#ifdef __IAudioClient2_INTERFACE_DEFINED__
+ if ((streamInfo != NULL) && (GetAudioClientVersion() >= 2))
+ {
+ pa_AudioClientProperties audioProps = { 0 };
+ audioProps.cbSize = sizeof(pa_AudioClientProperties);
+ audioProps.bIsOffload = FALSE;
+ audioProps.eCategory = (AUDIO_STREAM_CATEGORY)streamInfo->streamCategory;
+ switch (streamInfo->streamOption)
+ {
+ case eStreamOptionRaw:
+ if (GetWindowsVersion() >= WINDOWS_8_1_SERVER2012R2)
+ audioProps.Options = pa_AUDCLNT_STREAMOPTIONS_RAW;
+ break;
+ case eStreamOptionMatchFormat:
+ if (GetWindowsVersion() >= WINDOWS_10_SERVER2016)
+ audioProps.Options = pa_AUDCLNT_STREAMOPTIONS_MATCH_FORMAT;
+ break;
+ }
+
+ if (FAILED(hr = IAudioClient2_SetClientProperties((IAudioClient2 *)(*client), (AudioClientProperties *)&audioProps)))
+ {
+ PRINT(("WASAPI: IAudioClient2_SetClientProperties(IsOffload = %d, Category = %d, Options = %d) failed\n", audioProps.bIsOffload, audioProps.eCategory, audioProps.Options));
+ LogHostError(hr);
+ }
+ else
+ {
+ PRINT(("WASAPI: IAudioClient2 set properties: IsOffload = %d, Category = %d, Options = %d\n", audioProps.bIsOffload, audioProps.eCategory, audioProps.Options));
+ }
+ }
+#endif
+
+ return S_OK;
+}
+
+// ------------------------------------------------------------------------------------------
+#ifdef PA_WINRT
+// Windows 10 SDK 10.0.15063.0 has SignalObjectAndWait defined again (unlike in 10.0.14393.0 and lower)
+#if !defined(WDK_NTDDI_VERSION) || (WDK_NTDDI_VERSION < NTDDI_WIN10_RS2)
+static DWORD SignalObjectAndWait(HANDLE hObjectToSignal, HANDLE hObjectToWaitOn, DWORD dwMilliseconds, BOOL bAlertable)
+{
+ SetEvent(hObjectToSignal);
+ return WaitForSingleObjectEx(hObjectToWaitOn, dwMilliseconds, bAlertable);
+}
+#endif
+#endif
+
+// ------------------------------------------------------------------------------------------
+static void NotifyStateChanged(PaWasapiStream *stream, UINT32 flags, HRESULT hr)
+{
+ if (stream->fnStateHandler == NULL)
+ return;
+
+ if (FAILED(hr))
+ flags |= paWasapiStreamStateError;
+
+ stream->fnStateHandler((PaStream *)stream, flags, hr, stream->pStateHandlerUserData);
+}
+
+// ------------------------------------------------------------------------------------------
+static void FillBaseDeviceInfo(PaDeviceInfo *deviceInfo, PaHostApiIndex hostApiIndex)
+{
+ deviceInfo->structVersion = 2;
+ deviceInfo->hostApi = hostApiIndex;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError FillInactiveDeviceInfo(PaWasapiHostApiRepresentation *paWasapi, PaDeviceInfo *deviceInfo)
+{
+ if (deviceInfo->name == NULL)
+ deviceInfo->name = (char *)PaUtil_GroupAllocateMemory(paWasapi->allocations, 1);
+
+ if (deviceInfo->name != NULL)
+ {
+ ((char *)deviceInfo->name)[0] = 0;
+ }
+ else
+ return paInsufficientMemory;
+
+ return paNoError;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError FillDeviceInfo(PaWasapiHostApiRepresentation *paWasapi, void *pEndPoints, INT32 index, const WCHAR *defaultRenderId,
+ const WCHAR *defaultCaptureId, PaDeviceInfo *deviceInfo, PaWasapiDeviceInfo *wasapiDeviceInfo
+#ifdef PA_WINRT
+ , PaWasapiWinrtDeviceListContext *deviceListContext
+#endif
+)
+{
+ HRESULT hr;
+ PaError result;
+ PaUtilHostApiRepresentation *hostApi = (PaUtilHostApiRepresentation *)paWasapi;
+#ifdef PA_WINRT
+ PaWasapiWinrtDeviceListContextEntry *listEntry = &deviceListContext->devices[index];
+ (void)pEndPoints;
+ (void)defaultRenderId;
+ (void)defaultCaptureId;
+#endif
+
+#ifndef PA_WINRT
+ hr = IMMDeviceCollection_Item((IMMDeviceCollection *)pEndPoints, index, &wasapiDeviceInfo->device);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+
+ // Get device Id
+ {
+ WCHAR *deviceId;
+
+ hr = IMMDevice_GetId(wasapiDeviceInfo->device, &deviceId);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+
+ wcsncpy(wasapiDeviceInfo->deviceId, deviceId, PA_WASAPI_DEVICE_ID_LEN - 1);
+ CoTaskMemFree(deviceId);
+ }
+
+ // Get state of the device
+ hr = IMMDevice_GetState(wasapiDeviceInfo->device, &wasapiDeviceInfo->state);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+ if (wasapiDeviceInfo->state != DEVICE_STATE_ACTIVE)
+ {
+ PRINT(("WASAPI device: %d is not currently available (state:%d)\n", index, wasapiDeviceInfo->state));
+ }
+
+ // Get basic device info
+ {
+ IPropertyStore *pProperty;
+ IMMEndpoint *endpoint;
+ PROPVARIANT value;
+
+ hr = IMMDevice_OpenPropertyStore(wasapiDeviceInfo->device, STGM_READ, &pProperty);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+
+ // "Friendly" Name
+ {
+ PropVariantInit(&value);
+
+ hr = IPropertyStore_GetValue(pProperty, &PKEY_Device_FriendlyName, &value);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+
+ if ((deviceInfo->name = (char *)PaUtil_GroupAllocateMemory(paWasapi->allocations, PA_WASAPI_DEVICE_NAME_LEN)) == NULL)
+ {
+ result = paInsufficientMemory;
+ PropVariantClear(&value);
+ goto error;
+ }
+ if (value.pwszVal)
+ WideCharToMultiByte(CP_UTF8, 0, value.pwszVal, (INT32)wcslen(value.pwszVal), (char *)deviceInfo->name, PA_WASAPI_DEVICE_NAME_LEN - 1, 0, 0);
+ else
+ _snprintf((char *)deviceInfo->name, PA_WASAPI_DEVICE_NAME_LEN - 1, "baddev%d", index);
+
+ PropVariantClear(&value);
+
+ PA_DEBUG(("WASAPI:%d| name[%s]\n", index, deviceInfo->name));
+ }
+
+ // Default format
+ {
+ PropVariantInit(&value);
+
+ hr = IPropertyStore_GetValue(pProperty, &PKEY_AudioEngine_DeviceFormat, &value);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+
+ memcpy(&wasapiDeviceInfo->DefaultFormat, value.blob.pBlobData, min(sizeof(wasapiDeviceInfo->DefaultFormat), value.blob.cbSize));
+
+ PropVariantClear(&value);
+ }
+
+ // Form factor
+ {
+ PropVariantInit(&value);
+
+ hr = IPropertyStore_GetValue(pProperty, &PKEY_AudioEndpoint_FormFactor, &value);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+
+ // set
+ #if defined(DUMMYUNIONNAME) && defined(NONAMELESSUNION)
+ // avoid breaking strict-aliasing rules in such line: (EndpointFormFactor)(*((UINT *)(((WORD *)&value.wReserved3)+1)));
+ UINT v;
+ memcpy(&v, (((WORD *)&value.wReserved3) + 1), sizeof(v));
+ wasapiDeviceInfo->formFactor = (EndpointFormFactor)v;
+ #else
+ wasapiDeviceInfo->formFactor = (EndpointFormFactor)value.uintVal;
+ #endif
+
+ PA_DEBUG(("WASAPI:%d| form-factor[%d]\n", index, wasapiDeviceInfo->formFactor));
+
+ PropVariantClear(&value);
+ }
+
+ // Data flow (Renderer or Capture)
+ hr = IMMDevice_QueryInterface(wasapiDeviceInfo->device, &pa_IID_IMMEndpoint, (void **)&endpoint);
+ if (SUCCEEDED(hr))
+ {
+ hr = IMMEndpoint_GetDataFlow(endpoint, &wasapiDeviceInfo->flow);
+ SAFE_RELEASE(endpoint);
+ }
+
+ SAFE_RELEASE(pProperty);
+ }
+#else
+ // Set device Id
+ wcsncpy(wasapiDeviceInfo->deviceId, listEntry->info->id, PA_WASAPI_DEVICE_ID_LEN - 1);
+
+ // Set device name
+ if ((deviceInfo->name = (char *)PaUtil_GroupAllocateMemory(paWasapi->allocations, PA_WASAPI_DEVICE_NAME_LEN)) == NULL)
+ {
+ result = paInsufficientMemory;
+ goto error;
+ }
+ ((char *)deviceInfo->name)[0] = 0;
+ if (listEntry->info->name[0] != 0)
+ WideCharToMultiByte(CP_UTF8, 0, listEntry->info->name, (INT32)wcslen(listEntry->info->name), (char *)deviceInfo->name, PA_WASAPI_DEVICE_NAME_LEN - 1, 0, 0);
+ if (deviceInfo->name[0] == 0) // fallback if WideCharToMultiByte is failed, or listEntry is nameless
+ _snprintf((char *)deviceInfo->name, PA_WASAPI_DEVICE_NAME_LEN - 1, "WASAPI_%s:%d", (listEntry->flow == eRender ? "Output" : "Input"), index);
+
+ // Form-factor
+ wasapiDeviceInfo->formFactor = listEntry->info->formFactor;
+
+ // Set data flow
+ wasapiDeviceInfo->flow = listEntry->flow;
+#endif
+
+ // Set default Output/Input devices
+ if ((defaultRenderId != NULL) && (wcsncmp(wasapiDeviceInfo->deviceId, defaultRenderId, PA_WASAPI_DEVICE_NAME_LEN - 1) == 0))
+ hostApi->info.defaultOutputDevice = hostApi->info.deviceCount;
+ if ((defaultCaptureId != NULL) && (wcsncmp(wasapiDeviceInfo->deviceId, defaultCaptureId, PA_WASAPI_DEVICE_NAME_LEN - 1) == 0))
+ hostApi->info.defaultInputDevice = hostApi->info.deviceCount;
+
+ // Get a temporary IAudioClient for more details
+ {
+ IAudioClient *tmpClient;
+ WAVEFORMATEX *mixFormat;
+
+ hr = ActivateAudioInterface(wasapiDeviceInfo, NULL, &tmpClient);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+
+ // Get latency
+ hr = IAudioClient_GetDevicePeriod(tmpClient, &wasapiDeviceInfo->DefaultDevicePeriod, &wasapiDeviceInfo->MinimumDevicePeriod);
+ if (FAILED(hr))
+ {
+ PA_DEBUG(("WASAPI:%d| failed getting min/default periods by IAudioClient::GetDevicePeriod() with error[%08X], will use 30000/100000 hns\n", index, (UINT32)hr));
+
+ // assign WASAPI common values
+ wasapiDeviceInfo->DefaultDevicePeriod = 100000;
+ wasapiDeviceInfo->MinimumDevicePeriod = 30000;
+
+ // ignore error, let continue further without failing with paInternalError
+ hr = S_OK;
+ }
+
+ // Get mix format
+ hr = IAudioClient_GetMixFormat(tmpClient, &mixFormat);
+ if (SUCCEEDED(hr))
+ {
+ memcpy(&wasapiDeviceInfo->MixFormat, mixFormat, min(sizeof(wasapiDeviceInfo->MixFormat), (sizeof(*mixFormat) + mixFormat->cbSize)));
+ CoTaskMemFree(mixFormat);
+ }
+
+ // Register WINRT device
+ #ifdef PA_WINRT
+ if (SUCCEEDED(hr))
+ {
+ // Set state
+ wasapiDeviceInfo->state = DEVICE_STATE_ACTIVE;
+
+ // Default format (Shared mode) is always a mix format
+ wasapiDeviceInfo->DefaultFormat = wasapiDeviceInfo->MixFormat;
+ }
+ #endif
+
+ // Release tmp client
+ SAFE_RELEASE(tmpClient);
+
+ if (hr != S_OK)
+ {
+ //davidv: this happened with my hardware, previously for that same device in DirectSound:
+ //Digital Output (Realtek AC'97 Audio)'s GUID: {0x38f2cf50,0x7b4c,0x4740,0x86,0xeb,0xd4,0x38,0x66,0xd8,0xc8, 0x9f}
+ //so something must be _really_ wrong with this device, TODO handle this better. We kind of need GetMixFormat
+ LogHostError(hr);
+ result = paInternalError;
+ goto error;
+ }
+ }
+
+ // Fill basic device data
+ deviceInfo->maxInputChannels = 0;
+ deviceInfo->maxOutputChannels = 0;
+ deviceInfo->defaultSampleRate = wasapiDeviceInfo->MixFormat.Format.nSamplesPerSec;
+ switch (wasapiDeviceInfo->flow)
+ {
+ case eRender: {
+ deviceInfo->maxOutputChannels = wasapiDeviceInfo->MixFormat.Format.nChannels;
+ deviceInfo->defaultHighOutputLatency = nano100ToSeconds(wasapiDeviceInfo->DefaultDevicePeriod);
+ deviceInfo->defaultLowOutputLatency = nano100ToSeconds(wasapiDeviceInfo->MinimumDevicePeriod);
+ PA_DEBUG(("WASAPI:%d| def.SR[%d] max.CH[%d] latency{hi[%f] lo[%f]}\n", index, (UINT32)deviceInfo->defaultSampleRate,
+ deviceInfo->maxOutputChannels, (float)deviceInfo->defaultHighOutputLatency, (float)deviceInfo->defaultLowOutputLatency));
+ break;}
+ case eCapture: {
+ deviceInfo->maxInputChannels = wasapiDeviceInfo->MixFormat.Format.nChannels;
+ deviceInfo->defaultHighInputLatency = nano100ToSeconds(wasapiDeviceInfo->DefaultDevicePeriod);
+ deviceInfo->defaultLowInputLatency = nano100ToSeconds(wasapiDeviceInfo->MinimumDevicePeriod);
+ PA_DEBUG(("WASAPI:%d| def.SR[%d] max.CH[%d] latency{hi[%f] lo[%f]}\n", index, (UINT32)deviceInfo->defaultSampleRate,
+ deviceInfo->maxInputChannels, (float)deviceInfo->defaultHighInputLatency, (float)deviceInfo->defaultLowInputLatency));
+ break; }
+ default:
+ PRINT(("WASAPI:%d| bad Data Flow!\n", index));
+ result = paInternalError;
+ goto error;
+ }
+
+ return paNoError;
+
+error:
+
+ PRINT(("WASAPI: failed filling device info for device index[%d] - error[%d|%s]\n", index, result, Pa_GetErrorText(result)));
+
+ return result;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaDeviceInfo *AllocateDeviceListMemory(PaWasapiHostApiRepresentation *paWasapi)
+{
+ PaUtilHostApiRepresentation *hostApi = (PaUtilHostApiRepresentation *)paWasapi;
+ PaDeviceInfo *deviceInfoArray = NULL;
+
+ if ((paWasapi->devInfo = (PaWasapiDeviceInfo *)PaUtil_GroupAllocateMemory(paWasapi->allocations,
+ sizeof(PaWasapiDeviceInfo) * paWasapi->deviceCount)) == NULL)
+ {
+ return NULL;
+ }
+ memset(paWasapi->devInfo, 0, sizeof(PaWasapiDeviceInfo) * paWasapi->deviceCount);
+
+ if (paWasapi->deviceCount != 0)
+ {
+ UINT32 i;
+ UINT32 deviceCount = paWasapi->deviceCount;
+ #if defined(PA_WASAPI_MAX_CONST_DEVICE_COUNT) && (PA_WASAPI_MAX_CONST_DEVICE_COUNT > 0)
+ if (deviceCount < PA_WASAPI_MAX_CONST_DEVICE_COUNT)
+ deviceCount = PA_WASAPI_MAX_CONST_DEVICE_COUNT;
+ #endif
+
+ if ((hostApi->deviceInfos = (PaDeviceInfo **)PaUtil_GroupAllocateMemory(paWasapi->allocations,
+ sizeof(PaDeviceInfo *) * deviceCount)) == NULL)
+ {
+ return NULL;
+ }
+ for (i = 0; i < deviceCount; ++i)
+ hostApi->deviceInfos[i] = NULL;
+
+ // Allocate all device info structs in a contiguous block
+ if ((deviceInfoArray = (PaDeviceInfo *)PaUtil_GroupAllocateMemory(paWasapi->allocations,
+ sizeof(PaDeviceInfo) * deviceCount)) == NULL)
+ {
+ return NULL;
+ }
+ memset(deviceInfoArray, 0, sizeof(PaDeviceInfo) * deviceCount);
+ }
+
+ return deviceInfoArray;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError CreateDeviceList(PaWasapiHostApiRepresentation *paWasapi, PaHostApiIndex hostApiIndex)
+{
+ PaUtilHostApiRepresentation *hostApi = (PaUtilHostApiRepresentation *)paWasapi;
+ PaError result = paNoError;
+ PaDeviceInfo *deviceInfoArray = NULL;
+ UINT32 i;
+ WCHAR *defaultRenderId = NULL;
+ WCHAR *defaultCaptureId = NULL;
+#ifndef PA_WINRT
+ HRESULT hr;
+ IMMDeviceCollection *pEndPoints = NULL;
+ IMMDeviceEnumerator *pEnumerator = NULL;
+#else
+ void *pEndPoints = NULL;
+ IAudioClient *tmpClient;
+ PaWasapiWinrtDeviceListContext deviceListContext = { 0 };
+ PaWasapiWinrtDeviceInfo defaultRender = { 0 };
+ PaWasapiWinrtDeviceInfo defaultCapture = { 0 };
+#endif
+
+ // Make sure device list empty
+ if ((paWasapi->deviceCount != 0) || (hostApi->info.deviceCount != 0))
+ return paInternalError;
+
+#ifndef PA_WINRT
+ hr = CoCreateInstance(&pa_CLSID_IMMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER,
+ &pa_IID_IMMDeviceEnumerator, (void **)&pEnumerator);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+
+ // Get default render and capture devices
+ {
+ IMMDevice *device;
+
+ hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(pEnumerator, eRender, eMultimedia, &device);
+ if (hr != S_OK)
+ {
+ if (hr != E_NOTFOUND)
+ {
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+ }
+ }
+ else
+ {
+ hr = IMMDevice_GetId(device, &defaultRenderId);
+ IMMDevice_Release(device);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+ }
+
+ hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(pEnumerator, eCapture, eMultimedia, &device);
+ if (hr != S_OK)
+ {
+ if (hr != E_NOTFOUND)
+ {
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+ }
+ }
+ else
+ {
+ hr = IMMDevice_GetId(device, &defaultCaptureId);
+ IMMDevice_Release(device);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+ }
+ }
+
+ // Get all currently active devices
+ hr = IMMDeviceEnumerator_EnumAudioEndpoints(pEnumerator, eAll, DEVICE_STATE_ACTIVE, &pEndPoints);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+
+ // Get device count
+ hr = IMMDeviceCollection_GetCount(pEndPoints, &paWasapi->deviceCount);
+ IF_FAILED_INTERNAL_ERROR_JUMP(hr, result, error);
+#else
+ WinRT_GetDefaultDeviceId(defaultRender.id, STATIC_ARRAY_SIZE(defaultRender.id) - 1, eRender);
+ defaultRenderId = defaultRender.id;
+
+ WinRT_GetDefaultDeviceId(defaultCapture.id, STATIC_ARRAY_SIZE(defaultCapture.id) - 1, eCapture);
+ defaultCaptureId = defaultCapture.id;
+
+ if (g_DeviceListInfo.render.deviceCount == 0)
+ {
+ if (SUCCEEDED(WinRT_ActivateAudioInterface(defaultRenderId, GetAudioClientIID(), &tmpClient)))
+ {
+ deviceListContext.devices[paWasapi->deviceCount].info = &defaultRender;
+ deviceListContext.devices[paWasapi->deviceCount].flow = eRender;
+ paWasapi->deviceCount++;
+
+ SAFE_RELEASE(tmpClient);
+ }
+ }
+ else
+ {
+ for (i = 0; i < g_DeviceListInfo.render.deviceCount; ++i)
+ {
+ deviceListContext.devices[paWasapi->deviceCount].info = &g_DeviceListInfo.render.devices[i];
+ deviceListContext.devices[paWasapi->deviceCount].flow = eRender;
+ paWasapi->deviceCount++;
+ }
+ }
+
+ if (g_DeviceListInfo.capture.deviceCount == 0)
+ {
+ if (SUCCEEDED(WinRT_ActivateAudioInterface(defaultCaptureId, GetAudioClientIID(), &tmpClient)))
+ {
+ deviceListContext.devices[paWasapi->deviceCount].info = &defaultCapture;
+ deviceListContext.devices[paWasapi->deviceCount].flow = eCapture;
+ paWasapi->deviceCount++;
+
+ SAFE_RELEASE(tmpClient);
+ }
+ }
+ else
+ {
+ for (i = 0; i < g_DeviceListInfo.capture.deviceCount; ++i)
+ {
+ deviceListContext.devices[paWasapi->deviceCount].info = &g_DeviceListInfo.capture.devices[i];
+ deviceListContext.devices[paWasapi->deviceCount].flow = eCapture;
+ paWasapi->deviceCount++;
+ }
+ }
+#endif
+
+ // Allocate memory for the device list
+ if ((paWasapi->deviceCount != 0) && ((deviceInfoArray = AllocateDeviceListMemory(paWasapi)) == NULL))
+ {
+ result = paInsufficientMemory;
+ goto error;
+ }
+
+ // Fill WASAPI device info
+ for (i = 0; i < paWasapi->deviceCount; ++i)
+ {
+ PaDeviceInfo *deviceInfo = &deviceInfoArray[i];
+
+ PA_DEBUG(("WASAPI: device idx: %02d\n", i));
+ PA_DEBUG(("WASAPI: ---------------\n"));
+
+ FillBaseDeviceInfo(deviceInfo, hostApiIndex);
+
+ if ((result = FillDeviceInfo(paWasapi, pEndPoints, i, defaultRenderId, defaultCaptureId,
+ deviceInfo, &paWasapi->devInfo[i]
+ #ifdef PA_WINRT
+ , &deviceListContext
+ #endif
+ )) != paNoError)
+ {
+ // Faulty device is made inactive
+ if ((result = FillInactiveDeviceInfo(paWasapi, deviceInfo)) != paNoError)
+ goto error;
+ }
+
+ hostApi->deviceInfos[i] = deviceInfo;
+ ++hostApi->info.deviceCount;
+ }
+
+ // Fill the remaining slots with inactive device info
+#if defined(PA_WASAPI_MAX_CONST_DEVICE_COUNT) && (PA_WASAPI_MAX_CONST_DEVICE_COUNT > 0)
+ if ((hostApi->info.deviceCount != 0) && (hostApi->info.deviceCount < PA_WASAPI_MAX_CONST_DEVICE_COUNT))
+ {
+ for (i = hostApi->info.deviceCount; i < PA_WASAPI_MAX_CONST_DEVICE_COUNT; ++i)
+ {
+ PaDeviceInfo *deviceInfo = &deviceInfoArray[i];
+
+ FillBaseDeviceInfo(deviceInfo, hostApiIndex);
+
+ if ((result = FillInactiveDeviceInfo(paWasapi, deviceInfo)) != paNoError)
+ goto error;
+
+ hostApi->deviceInfos[i] = deviceInfo;
+ ++hostApi->info.deviceCount;
+ }
+ }
+#endif
+
+ // Clear any non-fatal errors
+ result = paNoError;
+
+ PRINT(("WASAPI: device list ok - found %d devices\n", paWasapi->deviceCount));
+
+done:
+
+#ifndef PA_WINRT
+ CoTaskMemFree(defaultRenderId);
+ CoTaskMemFree(defaultCaptureId);
+ SAFE_RELEASE(pEndPoints);
+ SAFE_RELEASE(pEnumerator);
+#endif
+
+ return result;
+
+error:
+
+ // Safety if error was not set so that we do not think initialize was a success
+ if (result == paNoError)
+ result = paInternalError;
+
+ PRINT(("WASAPI: failed to create device list - error[%d|%s]\n", result, Pa_GetErrorText(result)));
+
+ goto done;
+}
+
+// ------------------------------------------------------------------------------------------
+PaError PaWasapi_Initialize( PaUtilHostApiRepresentation **hostApi, PaHostApiIndex hostApiIndex )
+{
+ PaError result;
+ PaWasapiHostApiRepresentation *paWasapi;
+
+#ifndef PA_WINRT
+ if (!SetupAVRT())
+ {
+ PRINT(("WASAPI: No AVRT! (not VISTA?)\n"));
+ return paNoError;
+ }
+#endif
+
+ paWasapi = (PaWasapiHostApiRepresentation *)PaUtil_AllocateMemory(sizeof(PaWasapiHostApiRepresentation));
+ if (paWasapi == NULL)
+ {
+ result = paInsufficientMemory;
+ goto error;
+ }
+ memset(paWasapi, 0, sizeof(PaWasapiHostApiRepresentation)); /* ensure all fields are zeroed. especially paWasapi->allocations */
+
+ // Initialize COM subsystem
+ result = PaWinUtil_CoInitialize(paWASAPI, &paWasapi->comInitializationResult);
+ if (result != paNoError)
+ goto error;
+
+ // Create memory group
+ paWasapi->allocations = PaUtil_CreateAllocationGroup();
+ if (paWasapi->allocations == NULL)
+ {
+ result = paInsufficientMemory;
+ goto error;
+ }
+
+ // Fill basic interface info
+ *hostApi = &paWasapi->inheritedHostApiRep;
+ (*hostApi)->info.structVersion = 1;
+ (*hostApi)->info.type = paWASAPI;
+ (*hostApi)->info.name = "Windows WASAPI";
+ (*hostApi)->info.deviceCount = 0;
+ (*hostApi)->info.defaultInputDevice = paNoDevice;
+ (*hostApi)->info.defaultOutputDevice = paNoDevice;
+ (*hostApi)->Terminate = Terminate;
+ (*hostApi)->OpenStream = OpenStream;
+ (*hostApi)->IsFormatSupported = IsFormatSupported;
+
+ // Fill the device list
+ if ((result = CreateDeviceList(paWasapi, hostApiIndex)) != paNoError)
+ goto error;
+
+ // Detect if platform workaround is required
+ paWasapi->useWOW64Workaround = UseWOW64Workaround();
+
+ // Initialize time getter
+ SystemTimer_InitializeTimeGetter();
+
+ PaUtil_InitializeStreamInterface( &paWasapi->callbackStreamInterface, CloseStream, StartStream,
+ StopStream, AbortStream, IsStreamStopped, IsStreamActive,
+ GetStreamTime, GetStreamCpuLoad,
+ PaUtil_DummyRead, PaUtil_DummyWrite,
+ PaUtil_DummyGetReadAvailable, PaUtil_DummyGetWriteAvailable );
+
+ PaUtil_InitializeStreamInterface( &paWasapi->blockingStreamInterface, CloseStream, StartStream,
+ StopStream, AbortStream, IsStreamStopped, IsStreamActive,
+ GetStreamTime, PaUtil_DummyGetCpuLoad,
+ ReadStream, WriteStream, GetStreamReadAvailable, GetStreamWriteAvailable );
+
+ PRINT(("WASAPI: initialized ok\n"));
+
+ return paNoError;
+
+error:
+
+ PRINT(("WASAPI: failed %s error[%d|%s]\n", __FUNCTION__, result, Pa_GetErrorText(result)));
+
+ Terminate((PaUtilHostApiRepresentation *)paWasapi);
+
+ return result;
+}
+
+// ------------------------------------------------------------------------------------------
+static void ReleaseWasapiDeviceInfoList( PaWasapiHostApiRepresentation *paWasapi )
+{
+ UINT32 i;
+
+ // Release device info bound objects
+ for (i = 0; i < paWasapi->deviceCount; ++i)
+ {
+ #ifndef PA_WINRT
+ SAFE_RELEASE(paWasapi->devInfo[i].device);
+ #endif
+ }
+
+ // Free device info
+ if (paWasapi->allocations != NULL)
+ PaUtil_GroupFreeMemory(paWasapi->allocations, paWasapi->devInfo);
+
+ // Be ready for a device list reinitialization and if its creation is failed pointers must not be dangling
+ paWasapi->devInfo = NULL;
+ paWasapi->deviceCount = 0;
+}
+
+// ------------------------------------------------------------------------------------------
+static void Terminate( PaUtilHostApiRepresentation *hostApi )
+{
+ PaWasapiHostApiRepresentation *paWasapi = (PaWasapiHostApiRepresentation*)hostApi;
+ if (paWasapi == NULL)
+ return;
+
+ // Release device list
+ ReleaseWasapiDeviceInfoList(paWasapi);
+
+ // Free allocations and memory group itself
+ if (paWasapi->allocations != NULL)
+ {
+ PaUtil_FreeAllAllocations(paWasapi->allocations);
+ PaUtil_DestroyAllocationGroup(paWasapi->allocations);
+ }
+
+ // Release COM subsystem
+ PaWinUtil_CoUninitialize(paWASAPI, &paWasapi->comInitializationResult);
+
+ // Free API representation
+ PaUtil_FreeMemory(paWasapi);
+
+ // Close AVRT
+ CloseAVRT();
+}
+
+// ------------------------------------------------------------------------------------------
+static PaWasapiHostApiRepresentation *_GetHostApi(PaError *ret)
+{
+ PaError error;
+ PaUtilHostApiRepresentation *pApi;
+
+ if ((error = PaUtil_GetHostApiRepresentation(&pApi, paWASAPI)) != paNoError)
+ {
+ if (ret != NULL)
+ (*ret) = error;
+
+ return NULL;
+ }
+
+ return (PaWasapiHostApiRepresentation *)pApi;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError UpdateDeviceList()
+{
+ int i;
+ PaError ret;
+ PaWasapiHostApiRepresentation *paWasapi;
+ PaUtilHostApiRepresentation *hostApi;
+
+ // Get API
+ hostApi = (PaUtilHostApiRepresentation *)(paWasapi = _GetHostApi(&ret));
+ if (paWasapi == NULL)
+ return paNotInitialized;
+
+ // Make sure initialized properly
+ if (paWasapi->allocations == NULL)
+ return paNotInitialized;
+
+ // Release WASAPI internal device info list
+ ReleaseWasapiDeviceInfoList(paWasapi);
+
+ // Release external device info list
+ if (hostApi->deviceInfos != NULL)
+ {
+ for (i = 0; i < hostApi->info.deviceCount; ++i)
+ {
+ PaUtil_GroupFreeMemory(paWasapi->allocations, (void *)hostApi->deviceInfos[i]->name);
+ }
+ PaUtil_GroupFreeMemory(paWasapi->allocations, hostApi->deviceInfos[0]);
+ PaUtil_GroupFreeMemory(paWasapi->allocations, hostApi->deviceInfos);
+
+ // Be ready for a device list reinitialization and if its creation is failed pointers must not be dangling
+ hostApi->deviceInfos = NULL;
+ hostApi->info.deviceCount = 0;
+ hostApi->info.defaultInputDevice = paNoDevice;
+ hostApi->info.defaultOutputDevice = paNoDevice;
+ }
+
+ // Fill possibly updated device list
+ if ((ret = CreateDeviceList(paWasapi, Pa_HostApiTypeIdToHostApiIndex(paWASAPI))) != paNoError)
+ return ret;
+
+ return paNoError;
+}
+
+// ------------------------------------------------------------------------------------------
+PaError PaWasapi_UpdateDeviceList()
+{
+#if defined(PA_WASAPI_MAX_CONST_DEVICE_COUNT) && (PA_WASAPI_MAX_CONST_DEVICE_COUNT > 0)
+ return UpdateDeviceList();
+#else
+ return paInternalError;
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+int PaWasapi_GetDeviceCurrentFormat( PaStream *pStream, void *pFormat, unsigned int formatSize, int bOutput )
+{
+ UINT32 size;
+ WAVEFORMATEXTENSIBLE *format;
+
+ PaWasapiStream *stream = (PaWasapiStream *)pStream;
+ if (stream == NULL)
+ return paBadStreamPtr;
+
+ format = (bOutput == TRUE ? &stream->out.wavex : &stream->in.wavex);
+
+ size = min(formatSize, (UINT32)sizeof(*format));
+ memcpy(pFormat, format, size);
+
+ return size;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError _GetWasapiDeviceInfoByDeviceIndex( PaWasapiDeviceInfo **info, PaDeviceIndex device )
+{
+ PaError ret;
+ PaDeviceIndex index;
+
+ // Get API
+ PaWasapiHostApiRepresentation *paWasapi = _GetHostApi(&ret);
+ if (paWasapi == NULL)
+ return paNotInitialized;
+
+ // Get device index
+ if ((ret = PaUtil_DeviceIndexToHostApiDeviceIndex(&index, device, &paWasapi->inheritedHostApiRep)) != paNoError)
+ return ret;
+
+ // Validate index
+ if ((UINT32)index >= paWasapi->deviceCount)
+ return paInvalidDevice;
+
+ (*info) = &paWasapi->devInfo[ index ];
+
+ return paNoError;
+}
+
+// ------------------------------------------------------------------------------------------
+int PaWasapi_GetDeviceDefaultFormat( void *pFormat, unsigned int formatSize, PaDeviceIndex device )
+{
+ PaError ret;
+ PaWasapiDeviceInfo *deviceInfo;
+ UINT32 size;
+
+ if (pFormat == NULL)
+ return paBadBufferPtr;
+ if (formatSize <= 0)
+ return paBufferTooSmall;
+
+ if ((ret = _GetWasapiDeviceInfoByDeviceIndex(&deviceInfo, device)) != paNoError)
+ return ret;
+
+ size = min(formatSize, (UINT32)sizeof(deviceInfo->DefaultFormat));
+ memcpy(pFormat, &deviceInfo->DefaultFormat, size);
+
+ return size;
+}
+
+// ------------------------------------------------------------------------------------------
+int PaWasapi_GetDeviceMixFormat( void *pFormat, unsigned int formatSize, PaDeviceIndex device )
+{
+ PaError ret;
+ PaWasapiDeviceInfo *deviceInfo;
+ UINT32 size;
+
+ if (pFormat == NULL)
+ return paBadBufferPtr;
+ if (formatSize <= 0)
+ return paBufferTooSmall;
+
+ if ((ret = _GetWasapiDeviceInfoByDeviceIndex(&deviceInfo, device)) != paNoError)
+ return ret;
+
+ size = min(formatSize, (UINT32)sizeof(deviceInfo->MixFormat));
+ memcpy(pFormat, &deviceInfo->MixFormat, size);
+
+ return size;
+}
+
+// ------------------------------------------------------------------------------------------
+int PaWasapi_GetDeviceRole( PaDeviceIndex device )
+{
+ PaError ret;
+ PaWasapiDeviceInfo *deviceInfo;
+
+ if ((ret = _GetWasapiDeviceInfoByDeviceIndex(&deviceInfo, device)) != paNoError)
+ return ret;
+
+ return deviceInfo->formFactor;
+}
+
+// ------------------------------------------------------------------------------------------
+PaError PaWasapi_GetIMMDevice( PaDeviceIndex device, void **pIMMDevice )
+{
+#ifndef PA_WINRT
+ PaError ret;
+ PaWasapiDeviceInfo *deviceInfo;
+
+ if (pIMMDevice == NULL)
+ return paBadBufferPtr;
+
+ if ((ret = _GetWasapiDeviceInfoByDeviceIndex(&deviceInfo, device)) != paNoError)
+ return ret;
+
+ (*pIMMDevice) = deviceInfo->device;
+
+ return paNoError;
+#else
+ (void)device;
+ (void)pIMMDevice;
+ return paIncompatibleStreamHostApi;
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+PaError PaWasapi_GetFramesPerHostBuffer( PaStream *pStream, unsigned int *pInput, unsigned int *pOutput )
+{
+ PaWasapiStream *stream = (PaWasapiStream *)pStream;
+ if (stream == NULL)
+ return paBadStreamPtr;
+
+ if (pInput != NULL)
+ (*pInput) = stream->in.framesPerHostCallback;
+
+ if (pOutput != NULL)
+ (*pOutput) = stream->out.framesPerHostCallback;
+
+ return paNoError;
+}
+
+// ------------------------------------------------------------------------------------------
+static void LogWAVEFORMATEXTENSIBLE(const WAVEFORMATEXTENSIBLE *in)
+{
+ const WAVEFORMATEX *old = (WAVEFORMATEX *)in;
+ switch (old->wFormatTag)
+ {
+ case WAVE_FORMAT_EXTENSIBLE: {
+
+ PRINT(("wFormatTag =WAVE_FORMAT_EXTENSIBLE\n"));
+
+ if (IsEqualGUID(&in->SubFormat, &pa_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))
+ {
+ PRINT(("SubFormat =KSDATAFORMAT_SUBTYPE_IEEE_FLOAT\n"));
+ }
+ else
+ if (IsEqualGUID(&in->SubFormat, &pa_KSDATAFORMAT_SUBTYPE_PCM))
+ {
+ PRINT(("SubFormat =KSDATAFORMAT_SUBTYPE_PCM\n"));
+ }
+ else
+ {
+ PRINT(("SubFormat =CUSTOM GUID{%d:%d:%d:%d%d%d%d%d%d%d%d}\n",
+ in->SubFormat.Data1,
+ in->SubFormat.Data2,
+ in->SubFormat.Data3,
+ (int)in->SubFormat.Data4[0],
+ (int)in->SubFormat.Data4[1],
+ (int)in->SubFormat.Data4[2],
+ (int)in->SubFormat.Data4[3],
+ (int)in->SubFormat.Data4[4],
+ (int)in->SubFormat.Data4[5],
+ (int)in->SubFormat.Data4[6],
+ (int)in->SubFormat.Data4[7]));
+ }
+ PRINT(("Samples.wValidBitsPerSample =%d\n", in->Samples.wValidBitsPerSample));
+ PRINT(("dwChannelMask =0x%X\n",in->dwChannelMask));
+
+ break; }
+
+ case WAVE_FORMAT_PCM: PRINT(("wFormatTag =WAVE_FORMAT_PCM\n")); break;
+ case WAVE_FORMAT_IEEE_FLOAT: PRINT(("wFormatTag =WAVE_FORMAT_IEEE_FLOAT\n")); break;
+ default:
+ PRINT(("wFormatTag =UNKNOWN(%d)\n",old->wFormatTag)); break;
+ }
+
+ PRINT(("nChannels =%d\n",old->nChannels));
+ PRINT(("nSamplesPerSec =%d\n",old->nSamplesPerSec));
+ PRINT(("nAvgBytesPerSec=%d\n",old->nAvgBytesPerSec));
+ PRINT(("nBlockAlign =%d\n",old->nBlockAlign));
+ PRINT(("wBitsPerSample =%d\n",old->wBitsPerSample));
+ PRINT(("cbSize =%d\n",old->cbSize));
+}
+
+// ------------------------------------------------------------------------------------------
+PaSampleFormat WaveToPaFormat(const WAVEFORMATEXTENSIBLE *fmtext)
+{
+ const WAVEFORMATEX *fmt = (WAVEFORMATEX *)fmtext;
+
+ switch (fmt->wFormatTag)
+ {
+ case WAVE_FORMAT_EXTENSIBLE: {
+ if (IsEqualGUID(&fmtext->SubFormat, &pa_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))
+ {
+ if (fmtext->Samples.wValidBitsPerSample == 32)
+ return paFloat32;
+ }
+ else
+ if (IsEqualGUID(&fmtext->SubFormat, &pa_KSDATAFORMAT_SUBTYPE_PCM))
+ {
+ switch (fmt->wBitsPerSample)
+ {
+ case 32: return paInt32;
+ case 24: return paInt24;
+ case 16: return paInt16;
+ case 8: return paUInt8;
+ }
+ }
+ break; }
+
+ case WAVE_FORMAT_IEEE_FLOAT:
+ return paFloat32;
+
+ case WAVE_FORMAT_PCM: {
+ switch (fmt->wBitsPerSample)
+ {
+ case 32: return paInt32;
+ case 24: return paInt24;
+ case 16: return paInt16;
+ case 8: return paUInt8;
+ }
+ break; }
+ }
+
+ return paCustomFormat;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError MakeWaveFormatFromParams(WAVEFORMATEXTENSIBLE *wavex, const PaStreamParameters *params,
+ double sampleRate, BOOL packedOnly)
+{
+ WORD bitsPerSample;
+ WAVEFORMATEX *old;
+ DWORD channelMask = 0;
+ BOOL useExtensible = (params->channelCount > 2); // format is always forced for >2 channels format
+ PaWasapiStreamInfo *streamInfo = (PaWasapiStreamInfo *)params->hostApiSpecificStreamInfo;
+
+ // Convert PaSampleFormat to valid data bits
+ if ((bitsPerSample = PaSampleFormatToBitsPerSample(params->sampleFormat)) == 0)
+ return paSampleFormatNotSupported;
+
+ // Use user assigned channel mask
+ if ((streamInfo != NULL) && (streamInfo->flags & paWinWasapiUseChannelMask))
+ {
+ channelMask = streamInfo->channelMask;
+ useExtensible = TRUE;
+ }
+
+ memset(wavex, 0, sizeof(*wavex));
+
+ old = (WAVEFORMATEX *)wavex;
+ old->nChannels = (WORD)params->channelCount;
+ old->nSamplesPerSec = (DWORD)sampleRate;
+ old->wBitsPerSample = bitsPerSample;
+
+ // according to MSDN for WAVEFORMATEX structure for WAVE_FORMAT_PCM:
+ // "If wFormatTag is WAVE_FORMAT_PCM, then wBitsPerSample should be equal to 8 or 16."
+ if ((bitsPerSample != 8) && (bitsPerSample != 16))
+ {
+ // Normally 20 or 24 bits must go in 32 bit containers (ints) but in Exclusive mode some devices require
+ // packed version of the format, e.g. for example 24-bit in 3-bytes
+ old->wBitsPerSample = (packedOnly ? bitsPerSample : 32);
+ useExtensible = TRUE;
+ }
+
+ // WAVEFORMATEX
+ if (!useExtensible)
+ {
+ old->wFormatTag = WAVE_FORMAT_PCM;
+ }
+ // WAVEFORMATEXTENSIBLE
+ else
+ {
+ old->wFormatTag = WAVE_FORMAT_EXTENSIBLE;
+ old->cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
+
+ if ((params->sampleFormat & ~paNonInterleaved) == paFloat32)
+ wavex->SubFormat = pa_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
+ else
+ wavex->SubFormat = pa_KSDATAFORMAT_SUBTYPE_PCM;
+
+ wavex->Samples.wValidBitsPerSample = bitsPerSample;
+
+ // Set channel mask
+ if (channelMask != 0)
+ {
+ wavex->dwChannelMask = channelMask;
+ }
+ else
+ {
+ switch (params->channelCount)
+ {
+ case 1: wavex->dwChannelMask = PAWIN_SPEAKER_MONO; break;
+ case 2: wavex->dwChannelMask = PAWIN_SPEAKER_STEREO; break;
+ case 3: wavex->dwChannelMask = PAWIN_SPEAKER_STEREO|SPEAKER_LOW_FREQUENCY; break;
+ case 4: wavex->dwChannelMask = PAWIN_SPEAKER_QUAD; break;
+ case 5: wavex->dwChannelMask = PAWIN_SPEAKER_QUAD|SPEAKER_LOW_FREQUENCY; break;
+#ifdef PAWIN_SPEAKER_5POINT1_SURROUND
+ case 6: wavex->dwChannelMask = PAWIN_SPEAKER_5POINT1_SURROUND; break;
+#else
+ case 6: wavex->dwChannelMask = PAWIN_SPEAKER_5POINT1; break;
+#endif
+#ifdef PAWIN_SPEAKER_5POINT1_SURROUND
+ case 7: wavex->dwChannelMask = PAWIN_SPEAKER_5POINT1_SURROUND|SPEAKER_BACK_CENTER; break;
+#else
+ case 7: wavex->dwChannelMask = PAWIN_SPEAKER_5POINT1|SPEAKER_BACK_CENTER; break;
+#endif
+#ifdef PAWIN_SPEAKER_7POINT1_SURROUND
+ case 8: wavex->dwChannelMask = PAWIN_SPEAKER_7POINT1_SURROUND; break;
+#else
+ case 8: wavex->dwChannelMask = PAWIN_SPEAKER_7POINT1; break;
+#endif
+
+ default: wavex->dwChannelMask = 0;
+ }
+ }
+ }
+
+ old->nBlockAlign = old->nChannels * (old->wBitsPerSample / 8);
+ old->nAvgBytesPerSec = old->nSamplesPerSec * old->nBlockAlign;
+
+ return paNoError;
+}
+
+// ------------------------------------------------------------------------------------------
+static HRESULT GetAlternativeSampleFormatExclusive(IAudioClient *client, double sampleRate,
+ const PaStreamParameters *params, WAVEFORMATEXTENSIBLE *outWavex, BOOL packedSampleFormatOnly)
+{
+ HRESULT hr = !S_OK;
+ AUDCLNT_SHAREMODE shareMode = AUDCLNT_SHAREMODE_EXCLUSIVE;
+ WAVEFORMATEXTENSIBLE testFormat;
+ PaStreamParameters testParams;
+ int i;
+ static const PaSampleFormat bestToWorst[] = { paInt32, paInt24, paFloat32, paInt16 };
+
+ // Try combination Stereo (2 channels) and then we will use our custom mono-stereo mixer
+ if (params->channelCount == 1)
+ {
+ testParams = (*params);
+ testParams.channelCount = 2;
+
+ if (MakeWaveFormatFromParams(&testFormat, &testParams, sampleRate, packedSampleFormatOnly) == paNoError)
+ {
+ if ((hr = IAudioClient_IsFormatSupported(client, shareMode, &testFormat.Format, NULL)) == S_OK)
+ {
+ (*outWavex) = testFormat;
+ return hr;
+ }
+ }
+
+ // Try selecting suitable sample type
+ for (i = 0; i < STATIC_ARRAY_SIZE(bestToWorst); ++i)
+ {
+ testParams.sampleFormat = bestToWorst[i];
+
+ if (MakeWaveFormatFromParams(&testFormat, &testParams, sampleRate, packedSampleFormatOnly) == paNoError)
+ {
+ if ((hr = IAudioClient_IsFormatSupported(client, shareMode, &testFormat.Format, NULL)) == S_OK)
+ {
+ (*outWavex) = testFormat;
+ return hr;
+ }
+ }
+ }
+ }
+
+ // Try selecting suitable sample type
+ testParams = (*params);
+ for (i = 0; i < STATIC_ARRAY_SIZE(bestToWorst); ++i)
+ {
+ testParams.sampleFormat = bestToWorst[i];
+
+ if (MakeWaveFormatFromParams(&testFormat, &testParams, sampleRate, packedSampleFormatOnly) == paNoError)
+ {
+ if ((hr = IAudioClient_IsFormatSupported(client, shareMode, &testFormat.Format, NULL)) == S_OK)
+ {
+ (*outWavex) = testFormat;
+ return hr;
+ }
+ }
+ }
+
+ return hr;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError GetClosestFormat(IAudioClient *client, double sampleRate, const PaStreamParameters *_params,
+ AUDCLNT_SHAREMODE shareMode, WAVEFORMATEXTENSIBLE *outWavex, BOOL output)
+{
+ PaWasapiStreamInfo *streamInfo = (PaWasapiStreamInfo *)_params->hostApiSpecificStreamInfo;
+ WAVEFORMATEX *sharedClosestMatch = NULL;
+ HRESULT hr = !S_OK;
+ PaStreamParameters params = (*_params);
+ const BOOL explicitFormat = (streamInfo != NULL) && ((streamInfo->flags & paWinWasapiExplicitSampleFormat) == paWinWasapiExplicitSampleFormat);
+ (void)output;
+
+ /* It was not noticed that 24-bit Input producing no output while device accepts this format.
+ To fix this issue let's ask for 32-bits and let PA converters convert host 32-bit data
+ to 24-bit for user-space. The bug concerns Vista, if Windows 7 supports 24-bits for Input
+ please report to PortAudio developers to exclude Windows 7.
+ */
+ /*if ((params.sampleFormat == paInt24) && (output == FALSE))
+ params.sampleFormat = paFloat32;*/ // <<< The silence was due to missing Int32_To_Int24_Dither implementation
+
+ // Try standard approach, e.g. if data is > 16 bits it will be packed into 32-bit containers
+ MakeWaveFormatFromParams(outWavex, &params, sampleRate, FALSE);
+
+ // If built-in PCM converter requested then shared mode format will always succeed
+ if ((GetWindowsVersion() >= WINDOWS_7_SERVER2008R2) &&
+ (shareMode == AUDCLNT_SHAREMODE_SHARED) &&
+ ((streamInfo != NULL) && (streamInfo->flags & paWinWasapiAutoConvert)))
+ return paFormatIsSupported;
+
+ hr = IAudioClient_IsFormatSupported(client, shareMode, &outWavex->Format, (shareMode == AUDCLNT_SHAREMODE_SHARED ? &sharedClosestMatch : NULL));
+
+ // Exclusive mode can require packed format for some devices
+ if ((hr != S_OK) && (shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE))
+ {
+ // Enforce packed only format, e.g. data bits will not be packed into 32-bit containers in any case
+ MakeWaveFormatFromParams(outWavex, &params, sampleRate, TRUE);
+ hr = IAudioClient_IsFormatSupported(client, shareMode, &outWavex->Format, NULL);
+ }
+
+ if (hr == S_OK)
+ {
+ return paFormatIsSupported;
+ }
+ else
+ if (sharedClosestMatch != NULL)
+ {
+ WORD bitsPerSample;
+
+ if (sharedClosestMatch->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
+ memcpy(outWavex, sharedClosestMatch, sizeof(WAVEFORMATEXTENSIBLE));
+ else
+ memcpy(outWavex, sharedClosestMatch, sizeof(WAVEFORMATEX));
+
+ CoTaskMemFree(sharedClosestMatch);
+ sharedClosestMatch = NULL;
+
+ // Validate SampleRate
+ if ((DWORD)sampleRate != outWavex->Format.nSamplesPerSec)
+ return paInvalidSampleRate;
+
+ // Validate Channel count
+ if ((WORD)params.channelCount != outWavex->Format.nChannels)
+ {
+ // If mono, then driver does not support 1 channel, we use internal workaround
+ // of tiny software mixing functionality, e.g. we provide to user buffer 1 channel
+ // but then mix into 2 for device buffer
+ if ((params.channelCount == 1) && (outWavex->Format.nChannels == 2))
+ return paFormatIsSupported;
+ else
+ return paInvalidChannelCount;
+ }
+
+ // Validate Sample format
+ if ((bitsPerSample = PaSampleFormatToBitsPerSample(params.sampleFormat)) == 0)
+ return paSampleFormatNotSupported;
+
+ // Accepted format
+ return paFormatIsSupported;
+ }
+ else
+ if ((shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE) && !explicitFormat)
+ {
+ // Try standard approach, e.g. if data is > 16 bits it will be packed into 32-bit containers
+ if ((hr = GetAlternativeSampleFormatExclusive(client, sampleRate, &params, outWavex, FALSE)) == S_OK)
+ return paFormatIsSupported;
+
+ // Enforce packed only format, e.g. data bits will not be packed into 32-bit containers in any case
+ if ((hr = GetAlternativeSampleFormatExclusive(client, sampleRate, &params, outWavex, TRUE)) == S_OK)
+ return paFormatIsSupported;
+
+ // Log failure
+ LogHostError(hr);
+ }
+ else
+ {
+ // Exclusive mode and requested strict format, WASAPI did not accept this sample format
+ LogHostError(hr);
+ }
+
+ return paInvalidSampleRate;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError IsStreamParamsValid(struct PaUtilHostApiRepresentation *hostApi,
+ const PaStreamParameters *inputParameters,
+ const PaStreamParameters *outputParameters,
+ double sampleRate)
+{
+ if (hostApi == NULL)
+ return paHostApiNotFound;
+ if ((UINT32)sampleRate == 0)
+ return paInvalidSampleRate;
+
+ if (inputParameters != NULL)
+ {
+ /* all standard sample formats are supported by the buffer adapter,
+ this implementation doesn't support any custom sample formats */
+ // Note: paCustomFormat is now 8.24 (24-bits in 32-bit containers)
+ //if (inputParameters->sampleFormat & paCustomFormat)
+ // return paSampleFormatNotSupported;
+
+ /* unless alternate device specification is supported, reject the use of
+ paUseHostApiSpecificDeviceSpecification */
+ if (inputParameters->device == paUseHostApiSpecificDeviceSpecification)
+ return paInvalidDevice;
+
+ /* check that input device can support inputChannelCount */
+ if (inputParameters->channelCount > hostApi->deviceInfos[ inputParameters->device ]->maxInputChannels)
+ return paInvalidChannelCount;
+
+ /* validate inputStreamInfo */
+ if (inputParameters->hostApiSpecificStreamInfo)
+ {
+ PaWasapiStreamInfo *inputStreamInfo = (PaWasapiStreamInfo *)inputParameters->hostApiSpecificStreamInfo;
+ if ((inputStreamInfo->size != sizeof(PaWasapiStreamInfo)) ||
+ (inputStreamInfo->version != 1) ||
+ (inputStreamInfo->hostApiType != paWASAPI))
+ {
+ return paIncompatibleHostApiSpecificStreamInfo;
+ }
+ }
+
+ return paNoError;
+ }
+
+ if (outputParameters != NULL)
+ {
+ /* all standard sample formats are supported by the buffer adapter,
+ this implementation doesn't support any custom sample formats */
+ // Note: paCustomFormat is now 8.24 (24-bits in 32-bit containers)
+ //if (outputParameters->sampleFormat & paCustomFormat)
+ // return paSampleFormatNotSupported;
+
+ /* unless alternate device specification is supported, reject the use of
+ paUseHostApiSpecificDeviceSpecification */
+ if (outputParameters->device == paUseHostApiSpecificDeviceSpecification)
+ return paInvalidDevice;
+
+ /* check that output device can support outputChannelCount */
+ if (outputParameters->channelCount > hostApi->deviceInfos[ outputParameters->device ]->maxOutputChannels)
+ return paInvalidChannelCount;
+
+ /* validate outputStreamInfo */
+ if(outputParameters->hostApiSpecificStreamInfo)
+ {
+ PaWasapiStreamInfo *outputStreamInfo = (PaWasapiStreamInfo *)outputParameters->hostApiSpecificStreamInfo;
+ if ((outputStreamInfo->size != sizeof(PaWasapiStreamInfo)) ||
+ (outputStreamInfo->version != 1) ||
+ (outputStreamInfo->hostApiType != paWASAPI))
+ {
+ return paIncompatibleHostApiSpecificStreamInfo;
+ }
+ }
+
+ return paNoError;
+ }
+
+ return (inputParameters || outputParameters ? paNoError : paInternalError);
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError IsFormatSupported( struct PaUtilHostApiRepresentation *hostApi,
+ const PaStreamParameters *inputParameters,
+ const PaStreamParameters *outputParameters,
+ double sampleRate )
+{
+ IAudioClient *tmpClient = NULL;
+ PaWasapiHostApiRepresentation *paWasapi = (PaWasapiHostApiRepresentation*)hostApi;
+ PaWasapiStreamInfo *inputStreamInfo = NULL, *outputStreamInfo = NULL;
+
+ // Validate PaStreamParameters
+ PaError error;
+ if ((error = IsStreamParamsValid(hostApi, inputParameters, outputParameters, sampleRate)) != paNoError)
+ return error;
+
+ if (inputParameters != NULL)
+ {
+ WAVEFORMATEXTENSIBLE wavex;
+ HRESULT hr;
+ PaError answer;
+ AUDCLNT_SHAREMODE shareMode = AUDCLNT_SHAREMODE_SHARED;
+ inputStreamInfo = (PaWasapiStreamInfo *)inputParameters->hostApiSpecificStreamInfo;
+
+ if (inputStreamInfo && (inputStreamInfo->flags & paWinWasapiExclusive))
+ shareMode = AUDCLNT_SHAREMODE_EXCLUSIVE;
+
+ hr = ActivateAudioInterface(&paWasapi->devInfo[inputParameters->device], inputStreamInfo, &tmpClient);
+ if (hr != S_OK)
+ {
+ LogHostError(hr);
+ return paInvalidDevice;
+ }
+
+ answer = GetClosestFormat(tmpClient, sampleRate, inputParameters, shareMode, &wavex, FALSE);
+ SAFE_RELEASE(tmpClient);
+
+ if (answer != paFormatIsSupported)
+ return answer;
+ }
+
+ if (outputParameters != NULL)
+ {
+ HRESULT hr;
+ WAVEFORMATEXTENSIBLE wavex;
+ PaError answer;
+ AUDCLNT_SHAREMODE shareMode = AUDCLNT_SHAREMODE_SHARED;
+ outputStreamInfo = (PaWasapiStreamInfo *)outputParameters->hostApiSpecificStreamInfo;
+
+ if (outputStreamInfo && (outputStreamInfo->flags & paWinWasapiExclusive))
+ shareMode = AUDCLNT_SHAREMODE_EXCLUSIVE;
+
+ hr = ActivateAudioInterface(&paWasapi->devInfo[outputParameters->device], outputStreamInfo, &tmpClient);
+ if (hr != S_OK)
+ {
+ LogHostError(hr);
+ return paInvalidDevice;
+ }
+
+ answer = GetClosestFormat(tmpClient, sampleRate, outputParameters, shareMode, &wavex, TRUE);
+ SAFE_RELEASE(tmpClient);
+
+ if (answer != paFormatIsSupported)
+ return answer;
+ }
+
+ return paFormatIsSupported;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaUint32 _GetFramesPerHostBuffer(PaUint32 userFramesPerBuffer, PaTime suggestedLatency, double sampleRate, PaUint32 TimerJitterMs)
+{
+ PaUint32 frames = userFramesPerBuffer + max( userFramesPerBuffer, (PaUint32)(suggestedLatency * sampleRate) );
+ frames += (PaUint32)((sampleRate * 0.001) * TimerJitterMs);
+ return frames;
+}
+
+// ------------------------------------------------------------------------------------------
+static void _RecalculateBuffersCount(PaWasapiSubStream *sub, UINT32 userFramesPerBuffer, UINT32 framesPerLatency,
+ BOOL fullDuplex, BOOL output)
+{
+ // Count buffers (must be at least 1)
+ sub->buffers = (userFramesPerBuffer != 0 ? framesPerLatency / userFramesPerBuffer : 1);
+ if (sub->buffers == 0)
+ sub->buffers = 1;
+
+ // Determine number of buffers used:
+ // - Full-duplex mode will lead to period difference, thus only 1
+ // - Input mode, only 1, as WASAPI allows extraction of only 1 packet
+ // - For Shared mode we use double buffering
+ if ((sub->shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE) || fullDuplex)
+ {
+ BOOL eventMode = ((sub->streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK) == AUDCLNT_STREAMFLAGS_EVENTCALLBACK);
+
+ // Exclusive mode does not allow >1 buffers be used for Event interface, e.g. GetBuffer
+ // call must acquire max buffer size and it all must be processed.
+ if (eventMode)
+ sub->userBufferAndHostMatch = 1;
+
+ // Full-duplex or Event mode: prefer paUtilBoundedHostBufferSize because exclusive mode will starve
+ // and produce glitchy audio
+ // Output Polling mode: prefer paUtilFixedHostBufferSize (buffers != 1) for polling mode is it allows
+ // to consume user data by fixed size data chunks and thus lowers memory movement (less CPU usage)
+ if (fullDuplex || eventMode || !output)
+ sub->buffers = 1;
+ }
+}
+
+// ------------------------------------------------------------------------------------------
+static void _CalculateAlignedPeriod(PaWasapiSubStream *pSub, UINT32 *nFramesPerLatency, ALIGN_FUNC pAlignFunc)
+{
+ // Align frames to HD Audio packet size of 128 bytes for Exclusive mode only.
+ // Not aligning on Windows Vista will cause Event timeout, although Windows 7 will
+ // return AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED error to realign buffer. Aligning is necessary
+ // for Exclusive mode only! when audio data is fed directly to hardware.
+ if (pSub->shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE)
+ {
+ (*nFramesPerLatency) = AlignFramesPerBuffer((*nFramesPerLatency),
+ pSub->wavex.Format.nBlockAlign, pAlignFunc);
+ }
+
+ // Calculate period
+ pSub->period = MakeHnsPeriod((*nFramesPerLatency), pSub->wavex.Format.nSamplesPerSec);
+}
+
+// ------------------------------------------------------------------------------------------
+static void _CalculatePeriodicity(PaWasapiSubStream *pSub, BOOL output, REFERENCE_TIME *periodicity)
+{
+ // Note: according to Microsoft docs for IAudioClient::Initialize we can set periodicity of the buffer
+ // only for Exclusive mode. By setting periodicity almost equal to the user buffer frames we can
+ // achieve high quality (less glitchy) low-latency audio.
+ if (pSub->shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE)
+ {
+ const PaWasapiDeviceInfo *pInfo = pSub->params.device_info;
+
+ // By default periodicity equals to the full buffer (legacy PA WASAPI's behavior)
+ (*periodicity) = pSub->period;
+
+ // Try make buffer ready for I/O once we request the buffer readiness for it. Only Polling mode
+ // because for Event mode buffer size and periodicity must be equal according to Microsoft
+ // documentation for IAudioClient::Initialize.
+ //
+ // TO-DO: try spread to capture and full-duplex cases (not tested and therefore disabled)
+ //
+ if (((pSub->streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK) == 0) &&
+ (output && !pSub->params.full_duplex))
+ {
+ UINT32 alignedFrames;
+ REFERENCE_TIME userPeriodicity;
+
+ // Align frames backwards, so device will likely make buffer read ready when we are ready
+ // to read it (our scheduling will wait for amount of millisoconds of frames_per_buffer)
+ alignedFrames = AlignFramesPerBuffer(pSub->params.frames_per_buffer,
+ pSub->wavex.Format.nBlockAlign, ALIGN_BWD);
+
+ userPeriodicity = MakeHnsPeriod(alignedFrames, pSub->wavex.Format.nSamplesPerSec);
+
+ // Must not be larger than buffer size
+ if (userPeriodicity > pSub->period)
+ userPeriodicity = pSub->period;
+
+ // Must not be smaller than minimum supported by the device
+ if (userPeriodicity < pInfo->MinimumDevicePeriod)
+ userPeriodicity = pInfo->MinimumDevicePeriod;
+
+ (*periodicity) = userPeriodicity;
+ }
+ }
+ else
+ (*periodicity) = 0;
+}
+
+// ------------------------------------------------------------------------------------------
+static HRESULT CreateAudioClient(PaWasapiStream *pStream, PaWasapiSubStream *pSub, BOOL output, PaError *pa_error)
+{
+ PaError error;
+ HRESULT hr;
+ const PaWasapiDeviceInfo *pInfo = pSub->params.device_info;
+ const PaStreamParameters *params = &pSub->params.stream_params;
+ const double sampleRate = pSub->params.sample_rate;
+ const BOOL fullDuplex = pSub->params.full_duplex;
+ const UINT32 userFramesPerBuffer = pSub->params.frames_per_buffer;
+ UINT32 framesPerLatency = userFramesPerBuffer;
+ IAudioClient *audioClient = NULL;
+ REFERENCE_TIME eventPeriodicity = 0;
+
+ // Assume default failure due to some reason
+ (*pa_error) = paInvalidDevice;
+
+ // Validate parameters
+ if (!pSub || !pInfo || !params)
+ {
+ (*pa_error) = paBadStreamPtr;
+ return E_POINTER;
+ }
+ if ((UINT32)sampleRate == 0)
+ {
+ (*pa_error) = paInvalidSampleRate;
+ return E_INVALIDARG;
+ }
+
+ // Get the audio client
+ if (FAILED(hr = ActivateAudioInterface(pInfo, &pSub->params.wasapi_params, &audioClient)))
+ {
+ (*pa_error) = paInsufficientMemory;
+ LogHostError(hr);
+ goto done;
+ }
+
+ // Get closest format
+ if ((error = GetClosestFormat(audioClient, sampleRate, params, pSub->shareMode, &pSub->wavex, output)) != paFormatIsSupported)
+ {
+ (*pa_error) = error;
+ LogHostError(hr = AUDCLNT_E_UNSUPPORTED_FORMAT);
+ goto done; // fail, format not supported
+ }
+
+ // Check for Mono <<>> Stereo workaround
+ if ((params->channelCount == 1) && (pSub->wavex.Format.nChannels == 2))
+ {
+ // select mixer
+ pSub->monoMixer = GetMonoToStereoMixer(&pSub->wavex, (pInfo->flow == eRender ? MIX_DIR__1TO2 : MIX_DIR__2TO1_L));
+ if (pSub->monoMixer == NULL)
+ {
+ (*pa_error) = paInvalidChannelCount;
+ LogHostError(hr = AUDCLNT_E_UNSUPPORTED_FORMAT);
+ goto done; // fail, no mixer for format
+ }
+ }
+
+ // Calculate host buffer size
+ if ((pSub->shareMode != AUDCLNT_SHAREMODE_EXCLUSIVE) &&
+ (!pSub->streamFlags || ((pSub->streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK) == 0)))
+ {
+ framesPerLatency = _GetFramesPerHostBuffer(userFramesPerBuffer,
+ params->suggestedLatency, pSub->wavex.Format.nSamplesPerSec, 0/*,
+ (pSub->streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK ? 0 : 1)*/);
+ }
+ else
+ {
+ #ifdef PA_WASAPI_FORCE_POLL_IF_LARGE_BUFFER
+ REFERENCE_TIME overall;
+ #endif
+
+ // Work 1:1 with user buffer (only polling allows to use >1)
+ framesPerLatency += MakeFramesFromHns(SecondsTonano100(params->suggestedLatency), pSub->wavex.Format.nSamplesPerSec);
+
+ // Force Polling if overall latency is >= 21.33ms as it allows to use 100% CPU in a callback,
+ // or user specified latency parameter.
+ #ifdef PA_WASAPI_FORCE_POLL_IF_LARGE_BUFFER
+ overall = MakeHnsPeriod(framesPerLatency, pSub->wavex.Format.nSamplesPerSec);
+ if (overall >= (106667 * 2)/*21.33ms*/)
+ {
+ framesPerLatency = _GetFramesPerHostBuffer(userFramesPerBuffer,
+ params->suggestedLatency, pSub->wavex.Format.nSamplesPerSec, 0/*,
+ (streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK ? 0 : 1)*/);
+
+ // Use Polling interface
+ pSub->streamFlags &= ~AUDCLNT_STREAMFLAGS_EVENTCALLBACK;
+ PRINT(("WASAPI: CreateAudioClient: forcing POLL mode\n"));
+ }
+ #endif
+ }
+
+ // For full-duplex output resize buffer to be the same as for input
+ if (output && fullDuplex)
+ framesPerLatency = pStream->in.framesPerHostCallback;
+
+ // Avoid 0 frames
+ if (framesPerLatency == 0)
+ framesPerLatency = MakeFramesFromHns(pInfo->DefaultDevicePeriod, pSub->wavex.Format.nSamplesPerSec);
+
+ // Exclusive Input stream renders data in 6 packets, we must set then the size of
+ // single packet, total buffer size, e.g. required latency will be PacketSize * 6
+ if (!output && (pSub->shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE))
+ {
+ // Do it only for Polling mode
+ if ((pSub->streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK) == 0)
+ framesPerLatency /= WASAPI_PACKETS_PER_INPUT_BUFFER;
+ }
+
+ // Calculate aligned period
+ _CalculateAlignedPeriod(pSub, &framesPerLatency, ALIGN_BWD);
+
+ /*! Enforce min/max period for device in Shared mode to avoid bad audio quality.
+ Avoid doing so for Exclusive mode as alignment will suffer.
+ */
+ if (pSub->shareMode == AUDCLNT_SHAREMODE_SHARED)
+ {
+ if (pSub->period < pInfo->DefaultDevicePeriod)
+ {
+ pSub->period = pInfo->DefaultDevicePeriod;
+
+ // Recalculate aligned period
+ framesPerLatency = MakeFramesFromHns(pSub->period, pSub->wavex.Format.nSamplesPerSec);
+ _CalculateAlignedPeriod(pSub, &framesPerLatency, ALIGN_BWD);
+ }
+ }
+ else
+ {
+ if (pSub->period < pInfo->MinimumDevicePeriod)
+ {
+ pSub->period = pInfo->MinimumDevicePeriod;
+
+ // Recalculate aligned period
+ framesPerLatency = MakeFramesFromHns(pSub->period, pSub->wavex.Format.nSamplesPerSec);
+ _CalculateAlignedPeriod(pSub, &framesPerLatency, ALIGN_FWD);
+ }
+ }
+
+ /*! Windows 7 does not allow to set latency lower than minimal device period and will
+ return error: AUDCLNT_E_INVALID_DEVICE_PERIOD. Under Vista we enforce the same behavior
+ manually for unified behavior on all platforms.
+ */
+ {
+ /*! AUDCLNT_E_BUFFER_SIZE_ERROR: Applies to Windows 7 and later.
+ Indicates that the buffer duration value requested by an exclusive-mode client is
+ out of range. The requested duration value for pull mode must not be greater than
+ 500 milliseconds; for push mode the duration value must not be greater than 2 seconds.
+ */
+ if (pSub->shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE)
+ {
+ static const REFERENCE_TIME MAX_BUFFER_EVENT_DURATION = 500 * 10000;
+ static const REFERENCE_TIME MAX_BUFFER_POLL_DURATION = 2000 * 10000;
+
+ // Pull mode, max 500ms
+ if (pSub->streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK)
+ {
+ if (pSub->period > MAX_BUFFER_EVENT_DURATION)
+ {
+ pSub->period = MAX_BUFFER_EVENT_DURATION;
+
+ // Recalculate aligned period
+ framesPerLatency = MakeFramesFromHns(pSub->period, pSub->wavex.Format.nSamplesPerSec);
+ _CalculateAlignedPeriod(pSub, &framesPerLatency, ALIGN_BWD);
+ }
+ }
+ // Push mode, max 2000ms
+ else
+ {
+ if (pSub->period > MAX_BUFFER_POLL_DURATION)
+ {
+ pSub->period = MAX_BUFFER_POLL_DURATION;
+
+ // Recalculate aligned period
+ framesPerLatency = MakeFramesFromHns(pSub->period, pSub->wavex.Format.nSamplesPerSec);
+ _CalculateAlignedPeriod(pSub, &framesPerLatency, ALIGN_BWD);
+ }
+ }
+ }
+ }
+
+ // Set device scheduling period (always 0 in Shared mode according to Microsoft docs)
+ _CalculatePeriodicity(pSub, output, &eventPeriodicity);
+
+ // Open the stream and associate it with an audio session
+ hr = IAudioClient_Initialize(audioClient,
+ pSub->shareMode,
+ pSub->streamFlags,
+ pSub->period,
+ eventPeriodicity,
+ &pSub->wavex.Format,
+ NULL);
+
+ // [Output only] Check if buffer size is the one we requested in Exclusive mode, for UAC1 USB DACs WASAPI
+ // can allocate internal buffer equal to 8 times of pSub->period that has to be corrected in order to match
+ // the requested latency
+ if (output && SUCCEEDED(hr) && (pSub->shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE))
+ {
+ UINT32 maxBufferFrames;
+
+ if (FAILED(hr = IAudioClient_GetBufferSize(audioClient, &maxBufferFrames)))
+ {
+ (*pa_error) = paInvalidDevice;
+ LogHostError(hr);
+ goto done;
+ }
+
+ // For Exclusive mode for UAC1 devices maxBufferFrames may be framesPerLatency * 8 but check any difference
+ // to be able to guarantee the latency user requested and also resulted framesPerLatency may be bigger than
+ // 2 seconds that will cause audio client not operational (GetCurrentPadding() will return always 0)
+ if (maxBufferFrames >= (framesPerLatency * 2))
+ {
+ UINT32 ratio = maxBufferFrames / framesPerLatency;
+
+ PRINT(("WASAPI: CreateAudioClient: detected %d times larger buffer than requested, correct to match user latency\n", ratio));
+
+ // Get new aligned frames lowered by calculated ratio
+ framesPerLatency = MakeFramesFromHns(pSub->period / ratio, pSub->wavex.Format.nSamplesPerSec);
+ _CalculateAlignedPeriod(pSub, &framesPerLatency, ALIGN_BWD);
+
+ // Make sure we are not below the minimum period
+ if (pSub->period < pInfo->MinimumDevicePeriod)
+ pSub->period = pInfo->MinimumDevicePeriod;
+
+ // Release previous client
+ SAFE_RELEASE(audioClient);
+
+ // Create a new audio client
+ if (FAILED(hr = ActivateAudioInterface(pInfo, &pSub->params.wasapi_params, &audioClient)))
+ {
+ (*pa_error) = paInsufficientMemory;
+ LogHostError(hr);
+ goto done;
+ }
+
+ // Set device scheduling period (always 0 in Shared mode according to Microsoft docs)
+ _CalculatePeriodicity(pSub, output, &eventPeriodicity);
+
+ // Open the stream and associate it with an audio session
+ hr = IAudioClient_Initialize(audioClient,
+ pSub->shareMode,
+ pSub->streamFlags,
+ pSub->period,
+ eventPeriodicity,
+ &pSub->wavex.Format,
+ NULL);
+ }
+ }
+
+ /*! WASAPI is tricky on large device buffer, sometimes 2000ms can be allocated sometimes
+ less. There is no known guaranteed level thus we make subsequent tries by decreasing
+ buffer by 100ms per try.
+ */
+ while ((hr == E_OUTOFMEMORY) && (pSub->period > (100 * 10000)))
+ {
+ PRINT(("WASAPI: CreateAudioClient: decreasing buffer size to %d milliseconds\n", (pSub->period / 10000)));
+
+ // Decrease by 100ms and try again
+ pSub->period -= (100 * 10000);
+
+ // Recalculate aligned period
+ framesPerLatency = MakeFramesFromHns(pSub->period, pSub->wavex.Format.nSamplesPerSec);
+ _CalculateAlignedPeriod(pSub, &framesPerLatency, ALIGN_BWD);
+
+ // Release the previous allocations
+ SAFE_RELEASE(audioClient);
+
+ // Create a new audio client
+ if (FAILED(hr = ActivateAudioInterface(pInfo, &pSub->params.wasapi_params, &audioClient)))
+ {
+ (*pa_error) = paInsufficientMemory;
+ LogHostError(hr);
+ goto done;
+ }
+
+ // Set device scheduling period (always 0 in Shared mode according to Microsoft docs)
+ _CalculatePeriodicity(pSub, output, &eventPeriodicity);
+
+ // Open the stream and associate it with an audio session
+ hr = IAudioClient_Initialize(audioClient,
+ pSub->shareMode,
+ pSub->streamFlags,
+ pSub->period,
+ eventPeriodicity,
+ &pSub->wavex.Format,
+ NULL);
+ }
+
+ /*! WASAPI buffer size or alignment failure. Fallback to using default size and alignment.
+ */
+ if ((hr == AUDCLNT_E_BUFFER_SIZE_ERROR) || (hr == AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED))
+ {
+ // Use default
+ pSub->period = pInfo->DefaultDevicePeriod;
+
+ PRINT(("WASAPI: CreateAudioClient: correcting buffer size/alignment to device default\n"));
+
+ // Release the previous allocations
+ SAFE_RELEASE(audioClient);
+
+ // Create a new audio client
+ if (FAILED(hr = ActivateAudioInterface(pInfo, &pSub->params.wasapi_params, &audioClient)))
+ {
+ (*pa_error) = paInsufficientMemory;
+ LogHostError(hr);
+ goto done;
+ }
+
+ // Set device scheduling period (always 0 in Shared mode according to Microsoft docs)
+ _CalculatePeriodicity(pSub, output, &eventPeriodicity);
+
+ // Open the stream and associate it with an audio session
+ hr = IAudioClient_Initialize(audioClient,
+ pSub->shareMode,
+ pSub->streamFlags,
+ pSub->period,
+ eventPeriodicity,
+ &pSub->wavex.Format,
+ NULL);
+ }
+
+ // Error has no workaround, fail completely
+ if (FAILED(hr))
+ {
+ (*pa_error) = paInvalidDevice;
+ LogHostError(hr);
+ goto done;
+ }
+
+ // Set client
+ pSub->clientParent = audioClient;
+ IAudioClient_AddRef(pSub->clientParent);
+
+ // Recalculate buffers count
+ _RecalculateBuffersCount(pSub, userFramesPerBuffer, MakeFramesFromHns(pSub->period, pSub->wavex.Format.nSamplesPerSec),
+ fullDuplex, output);
+
+ // No error, client is successfully created
+ (*pa_error) = paNoError;
+
+done:
+
+ // Clean up
+ SAFE_RELEASE(audioClient);
+ return hr;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError ActivateAudioClientOutput(PaWasapiStream *stream)
+{
+ HRESULT hr;
+ PaError result;
+ UINT32 maxBufferSize;
+ PaTime bufferLatency;
+ const UINT32 framesPerBuffer = stream->out.params.frames_per_buffer;
+
+ // Create Audio client
+ if (FAILED(hr = CreateAudioClient(stream, &stream->out, TRUE, &result)))
+ {
+ LogPaError(result);
+ goto error;
+ }
+ LogWAVEFORMATEXTENSIBLE(&stream->out.wavex);
+
+ // Activate volume
+ stream->outVol = NULL;
+ /*hr = info->device->Activate(
+ __uuidof(IAudioEndpointVolume), CLSCTX_INPROC_SERVER, NULL,
+ (void**)&stream->outVol);
+ if (hr != S_OK)
+ return paInvalidDevice;*/
+
+ // Get max possible buffer size to check if it is not less than that we request
+ if (FAILED(hr = IAudioClient_GetBufferSize(stream->out.clientParent, &maxBufferSize)))
+ {
+ LogHostError(hr);
+ LogPaError(result = paInvalidDevice);
+ goto error;
+ }
+
+ // Correct buffer to max size if it maxed out result of GetBufferSize
+ stream->out.bufferSize = maxBufferSize;
+
+ // Number of frames that are required at each period
+ stream->out.framesPerHostCallback = maxBufferSize;
+
+ // Calculate frames per single buffer, if buffers > 1 then always framesPerBuffer
+ stream->out.framesPerBuffer =
+ (stream->out.userBufferAndHostMatch ? stream->out.framesPerHostCallback : framesPerBuffer);
+
+ // Calculate buffer latency
+ bufferLatency = (PaTime)maxBufferSize / stream->out.wavex.Format.nSamplesPerSec;
+
+ // Append buffer latency to interface latency in shared mode (see GetStreamLatency notes)
+ stream->out.latencySeconds = bufferLatency;
+
+ PRINT(("WASAPI::OpenStream(output): framesPerUser[ %d ] framesPerHost[ %d ] latency[ %.02fms ] exclusive[ %s ] wow64_fix[ %s ] mode[ %s ]\n", (UINT32)framesPerBuffer, (UINT32)stream->out.framesPerHostCallback, (float)(stream->out.latencySeconds*1000.0f), (stream->out.shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE ? "YES" : "NO"), (stream->out.params.wow64_workaround ? "YES" : "NO"), (stream->out.streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK ? "EVENT" : "POLL")));
+
+ return paNoError;
+
+error:
+
+ return result;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError ActivateAudioClientInput(PaWasapiStream *stream)
+{
+ HRESULT hr;
+ PaError result;
+ UINT32 maxBufferSize;
+ PaTime bufferLatency;
+ const UINT32 framesPerBuffer = stream->in.params.frames_per_buffer;
+
+ // Create Audio client
+ if (FAILED(hr = CreateAudioClient(stream, &stream->in, FALSE, &result)))
+ {
+ LogPaError(result);
+ goto error;
+ }
+ LogWAVEFORMATEXTENSIBLE(&stream->in.wavex);
+
+ // Create volume mgr
+ stream->inVol = NULL;
+ /*hr = info->device->Activate(
+ __uuidof(IAudioEndpointVolume), CLSCTX_INPROC_SERVER, NULL,
+ (void**)&stream->inVol);
+ if (hr != S_OK)
+ return paInvalidDevice;*/
+
+ // Get max possible buffer size to check if it is not less than that we request
+ if (FAILED(hr = IAudioClient_GetBufferSize(stream->in.clientParent, &maxBufferSize)))
+ {
+ LogHostError(hr);
+ LogPaError(result = paInvalidDevice);
+ goto error;
+ }
+
+ // Correct buffer to max size if it maxed out result of GetBufferSize
+ stream->in.bufferSize = maxBufferSize;
+
+ // Get interface latency (actually unneeded as we calculate latency from the size
+ // of maxBufferSize).
+ if (FAILED(hr = IAudioClient_GetStreamLatency(stream->in.clientParent, &stream->in.deviceLatency)))
+ {
+ LogHostError(hr);
+ LogPaError(result = paInvalidDevice);
+ goto error;
+ }
+ //stream->in.latencySeconds = nano100ToSeconds(stream->in.deviceLatency);
+
+ // Number of frames that are required at each period
+ stream->in.framesPerHostCallback = maxBufferSize;
+
+ // Calculate frames per single buffer, if buffers > 1 then always framesPerBuffer
+ stream->in.framesPerBuffer =
+ (stream->in.userBufferAndHostMatch ? stream->in.framesPerHostCallback : framesPerBuffer);
+
+ // Calculate buffer latency
+ bufferLatency = (PaTime)maxBufferSize / stream->in.wavex.Format.nSamplesPerSec;
+
+ // Append buffer latency to interface latency in shared mode (see GetStreamLatency notes)
+ stream->in.latencySeconds = bufferLatency;
+
+ PRINT(("WASAPI::OpenStream(input): framesPerUser[ %d ] framesPerHost[ %d ] latency[ %.02fms ] exclusive[ %s ] wow64_fix[ %s ] mode[ %s ]\n", (UINT32)framesPerBuffer, (UINT32)stream->in.framesPerHostCallback, (float)(stream->in.latencySeconds*1000.0f), (stream->in.shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE ? "YES" : "NO"), (stream->in.params.wow64_workaround ? "YES" : "NO"), (stream->in.streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK ? "EVENT" : "POLL")));
+
+ return paNoError;
+
+error:
+
+ return result;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError OpenStream( struct PaUtilHostApiRepresentation *hostApi,
+ PaStream** s,
+ const PaStreamParameters *inputParameters,
+ const PaStreamParameters *outputParameters,
+ double sampleRate,
+ unsigned long framesPerBuffer,
+ PaStreamFlags streamFlags,
+ PaStreamCallback *streamCallback,
+ void *userData )
+{
+ PaError result = paNoError;
+ HRESULT hr;
+ PaWasapiHostApiRepresentation *paWasapi = (PaWasapiHostApiRepresentation*)hostApi;
+ PaWasapiStream *stream = NULL;
+ int inputChannelCount, outputChannelCount;
+ PaSampleFormat inputSampleFormat, outputSampleFormat;
+ PaSampleFormat hostInputSampleFormat, hostOutputSampleFormat;
+ PaWasapiStreamInfo *inputStreamInfo = NULL, *outputStreamInfo = NULL;
+ PaWasapiDeviceInfo *info = NULL;
+ ULONG framesPerHostCallback;
+ PaUtilHostBufferSizeMode bufferMode;
+ const BOOL fullDuplex = ((inputParameters != NULL) && (outputParameters != NULL));
+ BOOL useInputBufferProcessor = (inputParameters != NULL), useOutputBufferProcessor = (outputParameters != NULL);
+
+ // validate PaStreamParameters
+ if ((result = IsStreamParamsValid(hostApi, inputParameters, outputParameters, sampleRate)) != paNoError)
+ return LogPaError(result);
+
+ // Validate platform specific flags
+ if ((streamFlags & paPlatformSpecificFlags) != 0)
+ {
+ LogPaError(result = paInvalidFlag); /* unexpected platform specific flag */
+ goto error;
+ }
+
+ // Allocate memory for PaWasapiStream
+ if ((stream = (PaWasapiStream *)PaUtil_AllocateMemory(sizeof(PaWasapiStream))) == NULL)
+ {
+ LogPaError(result = paInsufficientMemory);
+ goto error;
+ }
+
+ // Default thread priority is Audio: for exclusive mode we will use Pro Audio.
+ stream->nThreadPriority = eThreadPriorityAudio;
+
+ // Set default number of frames: paFramesPerBufferUnspecified
+ if (framesPerBuffer == paFramesPerBufferUnspecified)
+ {
+ UINT32 framesPerBufferIn = 0, framesPerBufferOut = 0;
+ if (inputParameters != NULL)
+ {
+ info = &paWasapi->devInfo[inputParameters->device];
+ framesPerBufferIn = MakeFramesFromHns(info->DefaultDevicePeriod, (UINT32)sampleRate);
+ }
+ if (outputParameters != NULL)
+ {
+ info = &paWasapi->devInfo[outputParameters->device];
+ framesPerBufferOut = MakeFramesFromHns(info->DefaultDevicePeriod, (UINT32)sampleRate);
+ }
+ // choosing maximum default size
+ framesPerBuffer = max(framesPerBufferIn, framesPerBufferOut);
+ }
+ if (framesPerBuffer == 0)
+ framesPerBuffer = ((UINT32)sampleRate / 100) * 2;
+
+ // Try create device: Input
+ if (inputParameters != NULL)
+ {
+ inputChannelCount = inputParameters->channelCount;
+ inputSampleFormat = GetSampleFormatForIO(inputParameters->sampleFormat);
+ info = &paWasapi->devInfo[inputParameters->device];
+
+ // default Shared Mode
+ stream->in.shareMode = AUDCLNT_SHAREMODE_SHARED;
+
+ // PaWasapiStreamInfo
+ if (inputParameters->hostApiSpecificStreamInfo != NULL)
+ {
+ memcpy(&stream->in.params.wasapi_params, inputParameters->hostApiSpecificStreamInfo, min(sizeof(stream->in.params.wasapi_params), ((PaWasapiStreamInfo *)inputParameters->hostApiSpecificStreamInfo)->size));
+ stream->in.params.wasapi_params.size = sizeof(stream->in.params.wasapi_params);
+
+ stream->in.params.stream_params.hostApiSpecificStreamInfo = &stream->in.params.wasapi_params;
+ inputStreamInfo = &stream->in.params.wasapi_params;
+
+ stream->in.flags = inputStreamInfo->flags;
+
+ // Exclusive Mode
+ if (inputStreamInfo->flags & paWinWasapiExclusive)
+ {
+ // Boost thread priority
+ stream->nThreadPriority = eThreadPriorityProAudio;
+ // Make Exclusive
+ stream->in.shareMode = AUDCLNT_SHAREMODE_EXCLUSIVE;
+ }
+
+ // explicit thread priority level
+ if (inputStreamInfo->flags & paWinWasapiThreadPriority)
+ {
+ if ((inputStreamInfo->threadPriority > eThreadPriorityNone) &&
+ (inputStreamInfo->threadPriority <= eThreadPriorityWindowManager))
+ stream->nThreadPriority = inputStreamInfo->threadPriority;
+ }
+
+ // redirect processing to custom user callback, ignore PA buffer processor
+ useInputBufferProcessor = !(inputStreamInfo->flags & paWinWasapiRedirectHostProcessor);
+ }
+
+ // Choose processing mode
+ stream->in.streamFlags = (stream->in.shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE ? AUDCLNT_STREAMFLAGS_EVENTCALLBACK : 0);
+ if (paWasapi->useWOW64Workaround)
+ stream->in.streamFlags = 0; // polling interface
+ else
+ if (streamCallback == NULL)
+ stream->in.streamFlags = 0; // polling interface
+ else
+ if ((inputStreamInfo != NULL) && (inputStreamInfo->flags & paWinWasapiPolling))
+ stream->in.streamFlags = 0; // polling interface
+ else
+ if (fullDuplex)
+ stream->in.streamFlags = 0; // polling interface is implemented for full-duplex mode also
+
+ // Use built-in PCM converter (channel count and sample rate) if requested
+ if ((GetWindowsVersion() >= WINDOWS_7_SERVER2008R2) &&
+ (stream->in.shareMode == AUDCLNT_SHAREMODE_SHARED) &&
+ ((inputStreamInfo != NULL) && (inputStreamInfo->flags & paWinWasapiAutoConvert)))
+ stream->in.streamFlags |= (AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM | AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY);
+
+ // Fill parameters for Audio Client creation
+ stream->in.params.device_info = info;
+ stream->in.params.stream_params = (*inputParameters);
+ stream->in.params.frames_per_buffer = framesPerBuffer;
+ stream->in.params.sample_rate = sampleRate;
+ stream->in.params.blocking = (streamCallback == NULL);
+ stream->in.params.full_duplex = fullDuplex;
+ stream->in.params.wow64_workaround = paWasapi->useWOW64Workaround;
+
+ // Create and activate audio client
+ if ((result = ActivateAudioClientInput(stream)) != paNoError)
+ {
+ LogPaError(result);
+ goto error;
+ }
+
+ // Get closest format
+ hostInputSampleFormat = PaUtil_SelectClosestAvailableFormat(WaveToPaFormat(&stream->in.wavex), inputSampleFormat);
+
+ // Set user-side custom host processor
+ if ((inputStreamInfo != NULL) &&
+ (inputStreamInfo->flags & paWinWasapiRedirectHostProcessor))
+ {
+ stream->hostProcessOverrideInput.processor = inputStreamInfo->hostProcessorInput;
+ stream->hostProcessOverrideInput.userData = userData;
+ }
+
+ // Only get IAudioCaptureClient input once here instead of getting it at multiple places based on the use
+ if (FAILED(hr = IAudioClient_GetService(stream->in.clientParent, &pa_IID_IAudioCaptureClient, (void **)&stream->captureClientParent)))
+ {
+ LogHostError(hr);
+ LogPaError(result = paUnanticipatedHostError);
+ goto error;
+ }
+
+ // Create ring buffer for blocking mode (It is needed because we fetch Input packets, not frames,
+ // and thus we have to save partial packet if such remains unread)
+ if (stream->in.params.blocking == TRUE)
+ {
+ UINT32 bufferFrames = ALIGN_NEXT_POW2((stream->in.framesPerHostCallback / WASAPI_PACKETS_PER_INPUT_BUFFER) * 2);
+ UINT32 frameSize = stream->in.wavex.Format.nBlockAlign;
+
+ // buffer
+ if ((stream->in.tailBuffer = PaUtil_AllocateMemory(sizeof(PaUtilRingBuffer))) == NULL)
+ {
+ LogPaError(result = paInsufficientMemory);
+ goto error;
+ }
+ memset(stream->in.tailBuffer, 0, sizeof(PaUtilRingBuffer));
+
+ // buffer memory region
+ stream->in.tailBufferMemory = PaUtil_AllocateMemory(frameSize * bufferFrames);
+ if (stream->in.tailBufferMemory == NULL)
+ {
+ LogPaError(result = paInsufficientMemory);
+ goto error;
+ }
+
+ // initialize
+ if (PaUtil_InitializeRingBuffer(stream->in.tailBuffer, frameSize, bufferFrames, stream->in.tailBufferMemory) != 0)
+ {
+ LogPaError(result = paInternalError);
+ goto error;
+ }
+ }
+ }
+ else
+ {
+ inputChannelCount = 0;
+ inputSampleFormat = hostInputSampleFormat = paInt16; /* Suppress 'uninitialised var' warnings. */
+ }
+
+ // Try create device: Output
+ if (outputParameters != NULL)
+ {
+ outputChannelCount = outputParameters->channelCount;
+ outputSampleFormat = GetSampleFormatForIO(outputParameters->sampleFormat);
+ info = &paWasapi->devInfo[outputParameters->device];
+
+ // default Shared Mode
+ stream->out.shareMode = AUDCLNT_SHAREMODE_SHARED;
+
+ // set PaWasapiStreamInfo
+ if (outputParameters->hostApiSpecificStreamInfo != NULL)
+ {
+ memcpy(&stream->out.params.wasapi_params, outputParameters->hostApiSpecificStreamInfo, min(sizeof(stream->out.params.wasapi_params), ((PaWasapiStreamInfo *)outputParameters->hostApiSpecificStreamInfo)->size));
+ stream->out.params.wasapi_params.size = sizeof(stream->out.params.wasapi_params);
+
+ stream->out.params.stream_params.hostApiSpecificStreamInfo = &stream->out.params.wasapi_params;
+ outputStreamInfo = &stream->out.params.wasapi_params;
+
+ stream->out.flags = outputStreamInfo->flags;
+
+ // Exclusive Mode
+ if (outputStreamInfo->flags & paWinWasapiExclusive)
+ {
+ // Boost thread priority
+ stream->nThreadPriority = eThreadPriorityProAudio;
+ // Make Exclusive
+ stream->out.shareMode = AUDCLNT_SHAREMODE_EXCLUSIVE;
+ }
+
+ // explicit thread priority level
+ if (outputStreamInfo->flags & paWinWasapiThreadPriority)
+ {
+ if ((outputStreamInfo->threadPriority > eThreadPriorityNone) &&
+ (outputStreamInfo->threadPriority <= eThreadPriorityWindowManager))
+ stream->nThreadPriority = outputStreamInfo->threadPriority;
+ }
+
+ // redirect processing to custom user callback, ignore PA buffer processor
+ useOutputBufferProcessor = !(outputStreamInfo->flags & paWinWasapiRedirectHostProcessor);
+ }
+
+ // Choose processing mode
+ stream->out.streamFlags = (stream->out.shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE ? AUDCLNT_STREAMFLAGS_EVENTCALLBACK : 0);
+ if (paWasapi->useWOW64Workaround)
+ stream->out.streamFlags = 0; // polling interface
+ else
+ if (streamCallback == NULL)
+ stream->out.streamFlags = 0; // polling interface
+ else
+ if ((outputStreamInfo != NULL) && (outputStreamInfo->flags & paWinWasapiPolling))
+ stream->out.streamFlags = 0; // polling interface
+ else
+ if (fullDuplex)
+ stream->out.streamFlags = 0; // polling interface is implemented for full-duplex mode also
+
+ // Use built-in PCM converter (channel count and sample rate) if requested
+ if ((GetWindowsVersion() >= WINDOWS_7_SERVER2008R2) &&
+ (stream->out.shareMode == AUDCLNT_SHAREMODE_SHARED) &&
+ ((outputStreamInfo != NULL) && (outputStreamInfo->flags & paWinWasapiAutoConvert)))
+ stream->out.streamFlags |= (AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM | AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY);
+
+ // Fill parameters for Audio Client creation
+ stream->out.params.device_info = info;
+ stream->out.params.stream_params = (*outputParameters);
+ stream->out.params.frames_per_buffer = framesPerBuffer;
+ stream->out.params.sample_rate = sampleRate;
+ stream->out.params.blocking = (streamCallback == NULL);
+ stream->out.params.full_duplex = fullDuplex;
+ stream->out.params.wow64_workaround = paWasapi->useWOW64Workaround;
+
+ // Create and activate audio client
+ if ((result = ActivateAudioClientOutput(stream)) != paNoError)
+ {
+ LogPaError(result);
+ goto error;
+ }
+
+ // Get closest format
+ hostOutputSampleFormat = PaUtil_SelectClosestAvailableFormat(WaveToPaFormat(&stream->out.wavex), outputSampleFormat);
+
+ // Set user-side custom host processor
+ if ((outputStreamInfo != NULL) &&
+ (outputStreamInfo->flags & paWinWasapiRedirectHostProcessor))
+ {
+ stream->hostProcessOverrideOutput.processor = outputStreamInfo->hostProcessorOutput;
+ stream->hostProcessOverrideOutput.userData = userData;
+ }
+
+ // Only get IAudioCaptureClient output once here instead of getting it at multiple places based on the use
+ if (FAILED(hr = IAudioClient_GetService(stream->out.clientParent, &pa_IID_IAudioRenderClient, (void **)&stream->renderClientParent)))
+ {
+ LogHostError(hr);
+ LogPaError(result = paUnanticipatedHostError);
+ goto error;
+ }
+ }
+ else
+ {
+ outputChannelCount = 0;
+ outputSampleFormat = hostOutputSampleFormat = paInt16; /* Suppress 'uninitialized var' warnings. */
+ }
+
+ // log full-duplex
+ if (fullDuplex)
+ PRINT(("WASAPI::OpenStream: full-duplex mode\n"));
+
+ // paWinWasapiPolling must be on/or not on both streams
+ if ((inputParameters != NULL) && (outputParameters != NULL))
+ {
+ if ((inputStreamInfo != NULL) && (outputStreamInfo != NULL))
+ {
+ if (((inputStreamInfo->flags & paWinWasapiPolling) &&
+ !(outputStreamInfo->flags & paWinWasapiPolling))
+ ||
+ (!(inputStreamInfo->flags & paWinWasapiPolling) &&
+ (outputStreamInfo->flags & paWinWasapiPolling)))
+ {
+ LogPaError(result = paInvalidFlag);
+ goto error;
+ }
+ }
+ }
+
+ // Initialize stream representation
+ if (streamCallback)
+ {
+ stream->bBlocking = FALSE;
+ PaUtil_InitializeStreamRepresentation(&stream->streamRepresentation,
+ &paWasapi->callbackStreamInterface,
+ streamCallback, userData);
+ }
+ else
+ {
+ stream->bBlocking = TRUE;
+ PaUtil_InitializeStreamRepresentation(&stream->streamRepresentation,
+ &paWasapi->blockingStreamInterface,
+ streamCallback, userData);
+ }
+
+ // Initialize CPU measurer
+ PaUtil_InitializeCpuLoadMeasurer(&stream->cpuLoadMeasurer, sampleRate);
+
+ if (outputParameters && inputParameters)
+ {
+ // serious problem #1 - No, Not a problem, especially concerning Exclusive mode.
+ // Input device in exclusive mode somehow is getting large buffer always, thus we
+ // adjust Output latency to reflect it, thus period will differ but playback will be
+ // normal.
+ /*if (stream->in.period != stream->out.period)
+ {
+ PRINT(("WASAPI: OpenStream: period discrepancy\n"));
+ LogPaError(result = paBadIODeviceCombination);
+ goto error;
+ }*/
+
+ // serious problem #2 - No, Not a problem, as framesPerHostCallback take into account
+ // sample size while it is not a problem for PA full-duplex, we must care of
+ // period only!
+ /*if (stream->out.framesPerHostCallback != stream->in.framesPerHostCallback)
+ {
+ PRINT(("WASAPI: OpenStream: framesPerHostCallback discrepancy\n"));
+ goto error;
+ }*/
+ }
+
+ // Calculate frames per host for processor
+ framesPerHostCallback = (outputParameters ? stream->out.framesPerBuffer : stream->in.framesPerBuffer);
+
+ // Choose correct mode of buffer processing:
+ // Exclusive/Shared non paWinWasapiPolling mode: paUtilFixedHostBufferSize - always fixed
+ // Exclusive/Shared paWinWasapiPolling mode: paUtilBoundedHostBufferSize - may vary for Exclusive or Full-duplex
+ bufferMode = paUtilFixedHostBufferSize;
+ if (inputParameters) // !!! WASAPI IAudioCaptureClient::GetBuffer extracts not number of frames but 1 packet, thus we always must adapt
+ bufferMode = paUtilBoundedHostBufferSize;
+ else
+ if (outputParameters)
+ {
+ if ((stream->out.buffers == 1) &&
+ (!stream->out.streamFlags || ((stream->out.streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK) == 0)))
+ bufferMode = paUtilBoundedHostBufferSize;
+ }
+ stream->bufferMode = bufferMode;
+
+ // Initialize buffer processor
+ if (useInputBufferProcessor || useOutputBufferProcessor)
+ {
+ result = PaUtil_InitializeBufferProcessor(
+ &stream->bufferProcessor,
+ inputChannelCount,
+ inputSampleFormat,
+ hostInputSampleFormat,
+ outputChannelCount,
+ outputSampleFormat,
+ hostOutputSampleFormat,
+ sampleRate,
+ streamFlags,
+ framesPerBuffer,
+ framesPerHostCallback,
+ bufferMode,
+ streamCallback,
+ userData);
+ if (result != paNoError)
+ {
+ LogPaError(result);
+ goto error;
+ }
+ }
+
+ // Set Input latency
+ stream->streamRepresentation.streamInfo.inputLatency =
+ (useInputBufferProcessor ? PaUtil_GetBufferProcessorInputLatencyFrames(&stream->bufferProcessor) / sampleRate : 0)
+ + (inputParameters != NULL ? stream->in.latencySeconds : 0);
+
+ // Set Output latency
+ stream->streamRepresentation.streamInfo.outputLatency =
+ (useOutputBufferProcessor ? PaUtil_GetBufferProcessorOutputLatencyFrames(&stream->bufferProcessor) / sampleRate : 0)
+ + (outputParameters != NULL ? stream->out.latencySeconds : 0);
+
+ // Set SR
+ stream->streamRepresentation.streamInfo.sampleRate = sampleRate;
+
+ (*s) = (PaStream *)stream;
+ return result;
+
+error:
+
+ if (stream != NULL)
+ CloseStream(stream);
+
+ return result;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError CloseStream( PaStream* s )
+{
+ PaError result = paNoError;
+ PaWasapiStream *stream = (PaWasapiStream*)s;
+
+ // abort active stream
+ if (IsStreamActive(s))
+ {
+ result = AbortStream(s);
+ }
+
+ SAFE_RELEASE(stream->captureClientParent);
+ SAFE_RELEASE(stream->renderClientParent);
+ SAFE_RELEASE(stream->out.clientParent);
+ SAFE_RELEASE(stream->in.clientParent);
+ SAFE_RELEASE(stream->inVol);
+ SAFE_RELEASE(stream->outVol);
+
+ CloseHandle(stream->event[S_INPUT]);
+ CloseHandle(stream->event[S_OUTPUT]);
+
+ _StreamCleanup(stream);
+
+ PaWasapi_FreeMemory(stream->in.monoBuffer);
+ PaWasapi_FreeMemory(stream->out.monoBuffer);
+
+ PaUtil_FreeMemory(stream->in.tailBuffer);
+ PaUtil_FreeMemory(stream->in.tailBufferMemory);
+
+ PaUtil_FreeMemory(stream->out.tailBuffer);
+ PaUtil_FreeMemory(stream->out.tailBufferMemory);
+
+ PaUtil_TerminateBufferProcessor(&stream->bufferProcessor);
+ PaUtil_TerminateStreamRepresentation(&stream->streamRepresentation);
+ PaUtil_FreeMemory(stream);
+
+ return result;
+}
+
+// ------------------------------------------------------------------------------------------
+HRESULT UnmarshalSubStreamComPointers(PaWasapiSubStream *substream)
+{
+#ifndef PA_WINRT
+ HRESULT hResult = S_OK;
+ HRESULT hFirstBadResult = S_OK;
+ substream->clientProc = NULL;
+
+ // IAudioClient
+ hResult = CoGetInterfaceAndReleaseStream(substream->clientStream, GetAudioClientIID(), (LPVOID*)&substream->clientProc);
+ substream->clientStream = NULL;
+ if (hResult != S_OK)
+ {
+ hFirstBadResult = (hFirstBadResult == S_OK) ? hResult : hFirstBadResult;
+ }
+
+ return hFirstBadResult;
+
+#else
+ (void)substream;
+ return S_OK;
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+HRESULT UnmarshalStreamComPointers(PaWasapiStream *stream)
+{
+#ifndef PA_WINRT
+ HRESULT hResult = S_OK;
+ HRESULT hFirstBadResult = S_OK;
+ stream->captureClient = NULL;
+ stream->renderClient = NULL;
+ stream->in.clientProc = NULL;
+ stream->out.clientProc = NULL;
+
+ if (NULL != stream->in.clientParent)
+ {
+ // SubStream pointers
+ hResult = UnmarshalSubStreamComPointers(&stream->in);
+ if (hResult != S_OK)
+ {
+ hFirstBadResult = (hFirstBadResult == S_OK) ? hResult : hFirstBadResult;
+ }
+
+ // IAudioCaptureClient
+ hResult = CoGetInterfaceAndReleaseStream(stream->captureClientStream, &pa_IID_IAudioCaptureClient, (LPVOID*)&stream->captureClient);
+ stream->captureClientStream = NULL;
+ if (hResult != S_OK)
+ {
+ hFirstBadResult = (hFirstBadResult == S_OK) ? hResult : hFirstBadResult;
+ }
+ }
+
+ if (NULL != stream->out.clientParent)
+ {
+ // SubStream pointers
+ hResult = UnmarshalSubStreamComPointers(&stream->out);
+ if (hResult != S_OK)
+ {
+ hFirstBadResult = (hFirstBadResult == S_OK) ? hResult : hFirstBadResult;
+ }
+
+ // IAudioRenderClient
+ hResult = CoGetInterfaceAndReleaseStream(stream->renderClientStream, &pa_IID_IAudioRenderClient, (LPVOID*)&stream->renderClient);
+ stream->renderClientStream = NULL;
+ if (hResult != S_OK)
+ {
+ hFirstBadResult = (hFirstBadResult == S_OK) ? hResult : hFirstBadResult;
+ }
+ }
+
+ return hFirstBadResult;
+#else
+ if (stream->in.clientParent != NULL)
+ {
+ stream->in.clientProc = stream->in.clientParent;
+ IAudioClient_AddRef(stream->in.clientParent);
+ }
+
+ if (stream->out.clientParent != NULL)
+ {
+ stream->out.clientProc = stream->out.clientParent;
+ IAudioClient_AddRef(stream->out.clientParent);
+ }
+
+ if (stream->renderClientParent != NULL)
+ {
+ stream->renderClient = stream->renderClientParent;
+ IAudioRenderClient_AddRef(stream->renderClientParent);
+ }
+
+ if (stream->captureClientParent != NULL)
+ {
+ stream->captureClient = stream->captureClientParent;
+ IAudioCaptureClient_AddRef(stream->captureClientParent);
+ }
+
+ return S_OK;
+#endif
+}
+
+// -----------------------------------------------------------------------------------------
+void ReleaseUnmarshaledSubComPointers(PaWasapiSubStream *substream)
+{
+ SAFE_RELEASE(substream->clientProc);
+}
+
+// -----------------------------------------------------------------------------------------
+void ReleaseUnmarshaledComPointers(PaWasapiStream *stream)
+{
+ // Release AudioClient services first
+ SAFE_RELEASE(stream->captureClient);
+ SAFE_RELEASE(stream->renderClient);
+
+ // Release AudioClients
+ ReleaseUnmarshaledSubComPointers(&stream->in);
+ ReleaseUnmarshaledSubComPointers(&stream->out);
+}
+
+// ------------------------------------------------------------------------------------------
+HRESULT MarshalSubStreamComPointers(PaWasapiSubStream *substream)
+{
+#ifndef PA_WINRT
+ HRESULT hResult;
+ substream->clientStream = NULL;
+
+ // IAudioClient
+ hResult = CoMarshalInterThreadInterfaceInStream(GetAudioClientIID(), (LPUNKNOWN)substream->clientParent, &substream->clientStream);
+ if (hResult != S_OK)
+ goto marshal_sub_error;
+
+ return hResult;
+
+ // If marshaling error occurred, make sure to release everything.
+marshal_sub_error:
+
+ UnmarshalSubStreamComPointers(substream);
+ ReleaseUnmarshaledSubComPointers(substream);
+ return hResult;
+#else
+ (void)substream;
+ return S_OK;
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+HRESULT MarshalStreamComPointers(PaWasapiStream *stream)
+{
+#ifndef PA_WINRT
+ HRESULT hResult = S_OK;
+ stream->captureClientStream = NULL;
+ stream->in.clientStream = NULL;
+ stream->renderClientStream = NULL;
+ stream->out.clientStream = NULL;
+
+ if (NULL != stream->in.clientParent)
+ {
+ // SubStream pointers
+ hResult = MarshalSubStreamComPointers(&stream->in);
+ if (hResult != S_OK)
+ goto marshal_error;
+
+ // IAudioCaptureClient
+ hResult = CoMarshalInterThreadInterfaceInStream(&pa_IID_IAudioCaptureClient, (LPUNKNOWN)stream->captureClientParent, &stream->captureClientStream);
+ if (hResult != S_OK)
+ goto marshal_error;
+ }
+
+ if (NULL != stream->out.clientParent)
+ {
+ // SubStream pointers
+ hResult = MarshalSubStreamComPointers(&stream->out);
+ if (hResult != S_OK)
+ goto marshal_error;
+
+ // IAudioRenderClient
+ hResult = CoMarshalInterThreadInterfaceInStream(&pa_IID_IAudioRenderClient, (LPUNKNOWN)stream->renderClientParent, &stream->renderClientStream);
+ if (hResult != S_OK)
+ goto marshal_error;
+ }
+
+ return hResult;
+
+ // If marshaling error occurred, make sure to release everything.
+marshal_error:
+
+ UnmarshalStreamComPointers(stream);
+ ReleaseUnmarshaledComPointers(stream);
+ return hResult;
+#else
+ (void)stream;
+ return S_OK;
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError StartStream( PaStream *s )
+{
+ HRESULT hr;
+ PaWasapiStream *stream = (PaWasapiStream*)s;
+ PaError result = paNoError;
+
+ // check if stream is active already
+ if (IsStreamActive(s))
+ return paStreamIsNotStopped;
+
+ PaUtil_ResetBufferProcessor(&stream->bufferProcessor);
+
+ // Cleanup handles (may be necessary if stream was stopped by itself due to error)
+ _StreamCleanup(stream);
+
+ // Create close event
+ if ((stream->hCloseRequest = CreateEvent(NULL, TRUE, FALSE, NULL)) == NULL)
+ {
+ result = paInsufficientMemory;
+ goto start_error;
+ }
+
+ // Create thread
+ if (!stream->bBlocking)
+ {
+ // Create thread events
+ stream->hThreadStart = CreateEvent(NULL, TRUE, FALSE, NULL);
+ stream->hThreadExit = CreateEvent(NULL, TRUE, FALSE, NULL);
+ if ((stream->hThreadStart == NULL) || (stream->hThreadExit == NULL))
+ {
+ result = paInsufficientMemory;
+ goto start_error;
+ }
+
+ // Marshal WASAPI interface pointers for safe use in thread created below.
+ if ((hr = MarshalStreamComPointers(stream)) != S_OK)
+ {
+ PRINT(("Failed marshaling stream COM pointers."));
+ result = paUnanticipatedHostError;
+ goto nonblocking_start_error;
+ }
+
+ if ((stream->in.clientParent && (stream->in.streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK)) ||
+ (stream->out.clientParent && (stream->out.streamFlags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK)))
+ {
+ if ((stream->hThread = CREATE_THREAD(ProcThreadEvent)) == NULL)
+ {
+ PRINT(("Failed creating thread: ProcThreadEvent."));
+ result = paUnanticipatedHostError;
+ goto nonblocking_start_error;
+ }
+ }
+ else
+ {
+ if ((stream->hThread = CREATE_THREAD(ProcThreadPoll)) == NULL)
+ {
+ PRINT(("Failed creating thread: ProcThreadPoll."));
+ result = paUnanticipatedHostError;
+ goto nonblocking_start_error;
+ }
+ }
+
+ // Wait for thread to start
+ if (WaitForSingleObject(stream->hThreadStart, 60*1000) == WAIT_TIMEOUT)
+ {
+ PRINT(("Failed starting thread: timeout."));
+ result = paUnanticipatedHostError;
+ goto nonblocking_start_error;
+ }
+ }
+ else
+ {
+ // Create blocking operation events (non-signaled event means - blocking operation is pending)
+ if (stream->out.clientParent != NULL)
+ {
+ if ((stream->hBlockingOpStreamWR = CreateEvent(NULL, TRUE, TRUE, NULL)) == NULL)
+ {
+ result = paInsufficientMemory;
+ goto start_error;
+ }
+ }
+ if (stream->in.clientParent != NULL)
+ {
+ if ((stream->hBlockingOpStreamRD = CreateEvent(NULL, TRUE, TRUE, NULL)) == NULL)
+ {
+ result = paInsufficientMemory;
+ goto start_error;
+ }
+ }
+
+ // Initialize event & start INPUT stream
+ if (stream->in.clientParent != NULL)
+ {
+ if ((hr = IAudioClient_Start(stream->in.clientParent)) != S_OK)
+ {
+ LogHostError(hr);
+ result = paUnanticipatedHostError;
+ goto start_error;
+ }
+ }
+
+ // Initialize event & start OUTPUT stream
+ if (stream->out.clientParent != NULL)
+ {
+ // Start
+ if ((hr = IAudioClient_Start(stream->out.clientParent)) != S_OK)
+ {
+ LogHostError(hr);
+ result = paUnanticipatedHostError;
+ goto start_error;
+ }
+ }
+
+ // Set parent to working pointers to use shared functions.
+ stream->captureClient = stream->captureClientParent;
+ stream->renderClient = stream->renderClientParent;
+ stream->in.clientProc = stream->in.clientParent;
+ stream->out.clientProc = stream->out.clientParent;
+
+ // Signal: stream running.
+ stream->running = TRUE;
+ }
+
+ return result;
+
+nonblocking_start_error:
+
+ // Set hThreadExit event to prevent blocking during cleanup
+ SetEvent(stream->hThreadExit);
+ UnmarshalStreamComPointers(stream);
+ ReleaseUnmarshaledComPointers(stream);
+
+start_error:
+
+ StopStream(s);
+ return result;
+}
+
+// ------------------------------------------------------------------------------------------
+void _StreamFinish(PaWasapiStream *stream)
+{
+ // Issue command to thread to stop processing and wait for thread exit
+ if (!stream->bBlocking)
+ {
+ SignalObjectAndWait(stream->hCloseRequest, stream->hThreadExit, INFINITE, FALSE);
+ }
+ else
+ // Blocking mode does not own thread
+ {
+ // Signal close event and wait for each of 2 blocking operations to complete
+ if (stream->out.clientParent)
+ SignalObjectAndWait(stream->hCloseRequest, stream->hBlockingOpStreamWR, INFINITE, TRUE);
+ if (stream->out.clientParent)
+ SignalObjectAndWait(stream->hCloseRequest, stream->hBlockingOpStreamRD, INFINITE, TRUE);
+
+ // Process stop
+ _StreamOnStop(stream);
+ }
+
+ // Cleanup handles
+ _StreamCleanup(stream);
+
+ stream->running = FALSE;
+}
+
+// ------------------------------------------------------------------------------------------
+void _StreamCleanup(PaWasapiStream *stream)
+{
+ // Close thread handles to allow restart
+ SAFE_CLOSE(stream->hThread);
+ SAFE_CLOSE(stream->hThreadStart);
+ SAFE_CLOSE(stream->hThreadExit);
+ SAFE_CLOSE(stream->hCloseRequest);
+ SAFE_CLOSE(stream->hBlockingOpStreamRD);
+ SAFE_CLOSE(stream->hBlockingOpStreamWR);
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError StopStream( PaStream *s )
+{
+ // Finish stream
+ _StreamFinish((PaWasapiStream *)s);
+ return paNoError;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError AbortStream( PaStream *s )
+{
+ // Finish stream
+ _StreamFinish((PaWasapiStream *)s);
+ return paNoError;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError IsStreamStopped( PaStream *s )
+{
+ return !((PaWasapiStream *)s)->running;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError IsStreamActive( PaStream *s )
+{
+ return ((PaWasapiStream *)s)->running;
+}
+
+// ------------------------------------------------------------------------------------------
+static PaTime GetStreamTime( PaStream *s )
+{
+ PaWasapiStream *stream = (PaWasapiStream*)s;
+
+ /* suppress unused variable warnings */
+ (void) stream;
+
+ return PaUtil_GetTime();
+}
+
+// ------------------------------------------------------------------------------------------
+static double GetStreamCpuLoad( PaStream* s )
+{
+ return PaUtil_GetCpuLoad(&((PaWasapiStream *)s)->cpuLoadMeasurer);
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError ReadStream( PaStream* s, void *_buffer, unsigned long frames )
+{
+ PaWasapiStream *stream = (PaWasapiStream*)s;
+
+ HRESULT hr = S_OK;
+ BYTE *user_buffer = (BYTE *)_buffer;
+ BYTE *wasapi_buffer = NULL;
+ DWORD flags = 0;
+ UINT32 i, available, sleep = 0;
+ unsigned long processed;
+ ThreadIdleScheduler sched;
+
+ // validate
+ if (!stream->running)
+ return paStreamIsStopped;
+ if (stream->captureClient == NULL)
+ return paBadStreamPtr;
+
+ // Notify blocking op has begun
+ ResetEvent(stream->hBlockingOpStreamRD);
+
+ // Use thread scheduling for 500 microseconds (emulated) when wait time for frames is less than
+ // 1 milliseconds, emulation helps to normalize CPU consumption and avoids too busy waiting
+ ThreadIdleScheduler_Setup(&sched, 1, 250/* microseconds */);
+
+ // Make a local copy of the user buffer pointer(s), this is necessary
+ // because PaUtil_CopyOutput() advances these pointers every time it is called
+ if (!stream->bufferProcessor.userInputIsInterleaved)
+ {
+ user_buffer = (BYTE *)alloca(sizeof(BYTE *) * stream->bufferProcessor.inputChannelCount);
+ if (user_buffer == NULL)
+ return paInsufficientMemory;
+
+ for (i = 0; i < stream->bufferProcessor.inputChannelCount; ++i)
+ ((BYTE **)user_buffer)[i] = ((BYTE **)_buffer)[i];
+ }
+
+ // Find out if there are tail frames, flush them all before reading hardware
+ if ((available = PaUtil_GetRingBufferReadAvailable(stream->in.tailBuffer)) != 0)
+ {
+ ring_buffer_size_t buf1_size = 0, buf2_size = 0, read, desired;
+ void *buf1 = NULL, *buf2 = NULL;
+
+ // Limit desired to amount of requested frames
+ desired = available;
+ if ((UINT32)desired > frames)
+ desired = frames;
+
+ // Get pointers to read regions
+ read = PaUtil_GetRingBufferReadRegions(stream->in.tailBuffer, desired, &buf1, &buf1_size, &buf2, &buf2_size);
+
+ if (buf1 != NULL)
+ {
+ // Register available frames to processor
+ PaUtil_SetInputFrameCount(&stream->bufferProcessor, buf1_size);
+
+ // Register host buffer pointer to processor
+ PaUtil_SetInterleavedInputChannels(&stream->bufferProcessor, 0, buf1, stream->bufferProcessor.inputChannelCount);
+
+ // Copy user data to host buffer (with conversion if applicable)
+ processed = PaUtil_CopyInput(&stream->bufferProcessor, (void **)&user_buffer, buf1_size);
+ frames -= processed;
+ }
+
+ if (buf2 != NULL)
+ {
+ // Register available frames to processor
+ PaUtil_SetInputFrameCount(&stream->bufferProcessor, buf2_size);
+
+ // Register host buffer pointer to processor
+ PaUtil_SetInterleavedInputChannels(&stream->bufferProcessor, 0, buf2, stream->bufferProcessor.inputChannelCount);
+
+ // Copy user data to host buffer (with conversion if applicable)
+ processed = PaUtil_CopyInput(&stream->bufferProcessor, (void **)&user_buffer, buf2_size);
+ frames -= processed;
+ }
+
+ // Advance
+ PaUtil_AdvanceRingBufferReadIndex(stream->in.tailBuffer, read);
+ }
+
+ // Read hardware
+ while (frames != 0)
+ {
+ // Check if blocking call must be interrupted
+ if (WaitForSingleObject(stream->hCloseRequest, sleep) != WAIT_TIMEOUT)
+ break;
+
+ // Get available frames (must be finding out available frames before call to IAudioCaptureClient_GetBuffer
+ // othervise audio glitches will occur inExclusive mode as it seems that WASAPI has some scheduling/
+ // processing problems when such busy polling with IAudioCaptureClient_GetBuffer occurs)
+ if ((hr = _PollGetInputFramesAvailable(stream, &available)) != S_OK)
+ {
+ LogHostError(hr);
+ return paUnanticipatedHostError;
+ }
+
+ // Wait for more frames to become available
+ if (available == 0)
+ {
+ // Exclusive mode may require latency of 1 millisecond, thus we shall sleep
+ // around 500 microseconds (emulated) to collect packets in time
+ if (stream->in.shareMode != AUDCLNT_SHAREMODE_EXCLUSIVE)
+ {
+ UINT32 sleep_frames = (frames < stream->in.framesPerHostCallback ? frames : stream->in.framesPerHostCallback);
+
+ sleep = GetFramesSleepTime(sleep_frames, stream->in.wavex.Format.nSamplesPerSec);
+ sleep /= 4; // wait only for 1/4 of the buffer
+
+ // WASAPI input provides packets, thus expiring packet will result in bad audio
+ // limit waiting time to 2 seconds (will always work for smallest buffer in Shared)
+ if (sleep > 2)
+ sleep = 2;
+
+ // Avoid busy waiting, schedule next 1 millesecond wait
+ if (sleep == 0)
+ sleep = ThreadIdleScheduler_NextSleep(&sched);
+ }
+ else
+ {
+ if ((sleep = ThreadIdleScheduler_NextSleep(&sched)) != 0)
+ {
+ Sleep(sleep);
+ sleep = 0;
+ }
+ }
+
+ continue;
+ }
+
+ // Get the available data in the shared buffer.
+ if ((hr = IAudioCaptureClient_GetBuffer(stream->captureClient, &wasapi_buffer, &available, &flags, NULL, NULL)) != S_OK)
+ {
+ // Buffer size is too small, waiting
+ if (hr != AUDCLNT_S_BUFFER_EMPTY)
+ {
+ LogHostError(hr);
+ goto end;
+ }
+
+ continue;
+ }
+
+ // Register available frames to processor
+ PaUtil_SetInputFrameCount(&stream->bufferProcessor, available);
+
+ // Register host buffer pointer to processor
+ PaUtil_SetInterleavedInputChannels(&stream->bufferProcessor, 0, wasapi_buffer, stream->bufferProcessor.inputChannelCount);
+
+ // Copy user data to host buffer (with conversion if applicable)
+ processed = PaUtil_CopyInput(&stream->bufferProcessor, (void **)&user_buffer, frames);
+ frames -= processed;
+
+ // Save tail into buffer
+ if ((frames == 0) && (available > processed))
+ {
+ UINT32 bytes_processed = processed * stream->in.wavex.Format.nBlockAlign;
+ UINT32 frames_to_save = available - processed;
+
+ PaUtil_WriteRingBuffer(stream->in.tailBuffer, wasapi_buffer + bytes_processed, frames_to_save);
+ }
+
+ // Release host buffer
+ if ((hr = IAudioCaptureClient_ReleaseBuffer(stream->captureClient, available)) != S_OK)
+ {
+ LogHostError(hr);
+ goto end;
+ }
+ }
+
+end:
+
+ // Notify blocking op has ended
+ SetEvent(stream->hBlockingOpStreamRD);
+
+ return (hr != S_OK ? paUnanticipatedHostError : paNoError);
+}
+
+// ------------------------------------------------------------------------------------------
+static PaError WriteStream( PaStream* s, const void *_buffer, unsigned long frames )
+{
+ PaWasapiStream *stream = (PaWasapiStream*)s;
+
+ //UINT32 frames;
+ const BYTE *user_buffer = (const BYTE *)_buffer;
+ BYTE *wasapi_buffer;
+ HRESULT hr = S_OK;
+ UINT32 i, available, sleep = 0;
+ unsigned long processed;
+ ThreadIdleScheduler sched;
+
+ // validate
+ if (!stream->running)
+ return paStreamIsStopped;
+ if (stream->renderClient == NULL)
+ return paBadStreamPtr;
+
+ // Notify blocking op has begun
+ ResetEvent(stream->hBlockingOpStreamWR);
+
+ // Use thread scheduling for 500 microseconds (emulated) when wait time for frames is less than
+ // 1 milliseconds, emulation helps to normalize CPU consumption and avoids too busy waiting
+ ThreadIdleScheduler_Setup(&sched, 1, 500/* microseconds */);
+
+ // Make a local copy of the user buffer pointer(s), this is necessary
+ // because PaUtil_CopyOutput() advances these pointers every time it is called
+ if (!stream->bufferProcessor.userOutputIsInterleaved)
+ {
+ user_buffer = (const BYTE *)alloca(sizeof(const BYTE *) * stream->bufferProcessor.outputChannelCount);
+ if (user_buffer == NULL)
+ return paInsufficientMemory;
+
+ for (i = 0; i < stream->bufferProcessor.outputChannelCount; ++i)
+ ((const BYTE **)user_buffer)[i] = ((const BYTE **)_buffer)[i];
+ }
+
+ // Blocking (potentially, until 'frames' are consumed) loop
+ while (frames != 0)
+ {
+ // Check if blocking call must be interrupted
+ if (WaitForSingleObject(stream->hCloseRequest, sleep) != WAIT_TIMEOUT)
+ break;
+
+ // Get frames available
+ if ((hr = _PollGetOutputFramesAvailable(stream, &available)) != S_OK)
+ {
+ LogHostError(hr);
+ goto end;
+ }
+
+ // Wait for more frames to become available
+ if (available == 0)
+ {
+ UINT32 sleep_frames = (frames < stream->out.framesPerHostCallback ? frames : stream->out.framesPerHostCallback);
+
+ sleep = GetFramesSleepTime(sleep_frames, stream->out.wavex.Format.nSamplesPerSec);
+ sleep /= 2; // wait only for half of the buffer
+
+ // Avoid busy waiting, schedule next 1 millesecond wait
+ if (sleep == 0)
+ sleep = ThreadIdleScheduler_NextSleep(&sched);
+
+ continue;
+ }
+
+ // Keep in 'frames' range
+ if (available > frames)
+ available = frames;
+
+ // Get pointer to host buffer
+ if ((hr = IAudioRenderClient_GetBuffer(stream->renderClient, available, &wasapi_buffer)) != S_OK)
+ {
+ // Buffer size is too big, waiting
+ if (hr == AUDCLNT_E_BUFFER_TOO_LARGE)
+ continue;
+
+ LogHostError(hr);
+ goto end;
+ }
+
+ // Keep waiting again (on Vista it was noticed that WASAPI could SOMETIMES return NULL pointer
+ // to buffer without returning AUDCLNT_E_BUFFER_TOO_LARGE instead)
+ if (wasapi_buffer == NULL)
+ continue;
+
+ // Register available frames to processor
+ PaUtil_SetOutputFrameCount(&stream->bufferProcessor, available);
+
+ // Register host buffer pointer to processor
+ PaUtil_SetInterleavedOutputChannels(&stream->bufferProcessor, 0, wasapi_buffer, stream->bufferProcessor.outputChannelCount);
+
+ // Copy user data to host buffer (with conversion if applicable), this call will advance
+ // pointer 'user_buffer' to consumed portion of data
+ processed = PaUtil_CopyOutput(&stream->bufferProcessor, (const void **)&user_buffer, frames);
+ frames -= processed;
+
+ // Release host buffer
+ if ((hr = IAudioRenderClient_ReleaseBuffer(stream->renderClient, available, 0)) != S_OK)
+ {
+ LogHostError(hr);
+ goto end;
+ }
+ }
+
+end:
+
+ // Notify blocking op has ended
+ SetEvent(stream->hBlockingOpStreamWR);
+
+ return (hr != S_OK ? paUnanticipatedHostError : paNoError);
+}
+
+unsigned long PaUtil_GetOutputFrameCount( PaUtilBufferProcessor* bp )
+{
+ return bp->hostOutputFrameCount[0];
+}
+
+// ------------------------------------------------------------------------------------------
+static signed long GetStreamReadAvailable( PaStream* s )
+{
+ PaWasapiStream *stream = (PaWasapiStream*)s;
+
+ HRESULT hr;
+ UINT32 available = 0;
+
+ // validate
+ if (!stream->running)
+ return paStreamIsStopped;
+ if (stream->captureClient == NULL)
+ return paBadStreamPtr;
+
+ // available in hardware buffer
+ if ((hr = _PollGetInputFramesAvailable(stream, &available)) != S_OK)
+ {
+ LogHostError(hr);
+ return paUnanticipatedHostError;
+ }
+
+ // available in software tail buffer
+ available += PaUtil_GetRingBufferReadAvailable(stream->in.tailBuffer);
+
+ return available;
+}
+
+// ------------------------------------------------------------------------------------------
+static signed long GetStreamWriteAvailable( PaStream* s )
+{
+ PaWasapiStream *stream = (PaWasapiStream*)s;
+ HRESULT hr;
+ UINT32 available = 0;
+
+ // validate
+ if (!stream->running)
+ return paStreamIsStopped;
+ if (stream->renderClient == NULL)
+ return paBadStreamPtr;
+
+ if ((hr = _PollGetOutputFramesAvailable(stream, &available)) != S_OK)
+ {
+ LogHostError(hr);
+ return paUnanticipatedHostError;
+ }
+
+ return (signed long)available;
+}
+
+
+// ------------------------------------------------------------------------------------------
+static void WaspiHostProcessingLoop( void *inputBuffer, long inputFrames,
+ void *outputBuffer, long outputFrames,
+ void *userData )
+{
+ PaWasapiStream *stream = (PaWasapiStream*)userData;
+ PaStreamCallbackTimeInfo timeInfo = {0,0,0};
+ PaStreamCallbackFlags flags = 0;
+ int callbackResult;
+ unsigned long framesProcessed;
+ HRESULT hr;
+ UINT32 pending;
+
+ PaUtil_BeginCpuLoadMeasurement( &stream->cpuLoadMeasurer );
+
+ /*
+ Pa_GetStreamTime:
+ - generate timing information
+ - handle buffer slips
+ */
+ timeInfo.currentTime = PaUtil_GetTime();
+ // Query input latency
+ if (stream->in.clientProc != NULL)
+ {
+ PaTime pending_time;
+ if ((hr = IAudioClient_GetCurrentPadding(stream->in.clientProc, &pending)) == S_OK)
+ pending_time = (PaTime)pending / (PaTime)stream->in.wavex.Format.nSamplesPerSec;
+ else
+ pending_time = (PaTime)stream->in.latencySeconds;
+
+ timeInfo.inputBufferAdcTime = timeInfo.currentTime + pending_time;
+ }
+ // Query output current latency
+ if (stream->out.clientProc != NULL)
+ {
+ PaTime pending_time;
+ if ((hr = IAudioClient_GetCurrentPadding(stream->out.clientProc, &pending)) == S_OK)
+ pending_time = (PaTime)pending / (PaTime)stream->out.wavex.Format.nSamplesPerSec;
+ else
+ pending_time = (PaTime)stream->out.latencySeconds;
+
+ timeInfo.outputBufferDacTime = timeInfo.currentTime + pending_time;
+ }
+
+ /*
+ If you need to byte swap or shift inputBuffer to convert it into a
+ portaudio format, do it here.
+ */
+
+ PaUtil_BeginBufferProcessing( &stream->bufferProcessor, &timeInfo, flags );
+
+ /*
+ depending on whether the host buffers are interleaved, non-interleaved
+ or a mixture, you will want to call PaUtil_SetInterleaved*Channels(),
+ PaUtil_SetNonInterleaved*Channel() or PaUtil_Set*Channel() here.
+ */
+
+ if (stream->bufferProcessor.inputChannelCount > 0)
+ {
+ PaUtil_SetInputFrameCount( &stream->bufferProcessor, inputFrames );
+ PaUtil_SetInterleavedInputChannels( &stream->bufferProcessor,
+ 0, /* first channel of inputBuffer is channel 0 */
+ inputBuffer,
+ 0 ); /* 0 - use inputChannelCount passed to init buffer processor */
+ }
+
+ if (stream->bufferProcessor.outputChannelCount > 0)
+ {
+ PaUtil_SetOutputFrameCount( &stream->bufferProcessor, outputFrames);
+ PaUtil_SetInterleavedOutputChannels( &stream->bufferProcessor,
+ 0, /* first channel of outputBuffer is channel 0 */
+ outputBuffer,
+ 0 ); /* 0 - use outputChannelCount passed to init buffer processor */
+ }
+
+ /* you must pass a valid value of callback result to PaUtil_EndBufferProcessing()
+ in general you would pass paContinue for normal operation, and
+ paComplete to drain the buffer processor's internal output buffer.
+ You can check whether the buffer processor's output buffer is empty
+ using PaUtil_IsBufferProcessorOuputEmpty( bufferProcessor )
+ */
+ callbackResult = paContinue;
+ framesProcessed = PaUtil_EndBufferProcessing( &stream->bufferProcessor, &callbackResult );
+
+ /*
+ If you need to byte swap or shift outputBuffer to convert it to
+ host format, do it here.
+ */
+
+ PaUtil_EndCpuLoadMeasurement( &stream->cpuLoadMeasurer, framesProcessed );
+
+ if (callbackResult == paContinue)
+ {
+ /* nothing special to do */
+ }
+ else
+ if (callbackResult == paAbort)
+ {
+ // stop stream
+ SetEvent(stream->hCloseRequest);
+ }
+ else
+ {
+ // stop stream
+ SetEvent(stream->hCloseRequest);
+ }
+}
+
+// ------------------------------------------------------------------------------------------
+#ifndef PA_WINRT
+static PaError MMCSS_activate(PaWasapiThreadPriority nPriorityClass, HANDLE *ret)
+{
+ static const char *mmcs_name[] =
+ {
+ NULL,
+ "Audio",
+ "Capture",
+ "Distribution",
+ "Games",
+ "Playback",
+ "Pro Audio",
+ "Window Manager"
+ };
+
+ DWORD task_idx = 0;
+ HANDLE hTask;
+
+ if ((UINT32)nPriorityClass >= STATIC_ARRAY_SIZE(mmcs_name))
+ return paUnanticipatedHostError;
+
+ if ((hTask = pAvSetMmThreadCharacteristics(mmcs_name[nPriorityClass], &task_idx)) == NULL)
+ {
+ PRINT(("WASAPI: AvSetMmThreadCharacteristics failed: error[%d]\n", GetLastError()));
+ return paUnanticipatedHostError;
+ }
+
+ /*BOOL priority_ok = pAvSetMmThreadPriority(hTask, AVRT_PRIORITY_NORMAL);
+ if (priority_ok == FALSE)
+ {
+ PRINT(("WASAPI: AvSetMmThreadPriority failed!\n"));
+ }*/
+
+ // debug
+ {
+ int cur_priority = GetThreadPriority(GetCurrentThread());
+ DWORD cur_priority_class = GetPriorityClass(GetCurrentProcess());
+ PRINT(("WASAPI: thread[ priority-0x%X class-0x%X ]\n", cur_priority, cur_priority_class));
+ }
+
+ (*ret) = hTask;
+ return paNoError;
+}
+#endif
+
+// ------------------------------------------------------------------------------------------
+#ifndef PA_WINRT
+static void MMCSS_deactivate(HANDLE hTask)
+{
+ if (pAvRevertMmThreadCharacteristics(hTask) == FALSE)
+ {
+ PRINT(("WASAPI: AvRevertMmThreadCharacteristics failed!\n"));
+ }
+}
+#endif
+
+// ------------------------------------------------------------------------------------------
+PaError PaWasapi_ThreadPriorityBoost(void **pTask, PaWasapiThreadPriority priorityClass)
+{
+ HANDLE task;
+ PaError ret;
+
+ if (pTask == NULL)
+ return paUnanticipatedHostError;
+
+#ifndef PA_WINRT
+ if ((ret = MMCSS_activate(priorityClass, &task)) != paNoError)
+ return ret;
+#else
+ switch (priorityClass)
+ {
+ case eThreadPriorityAudio:
+ case eThreadPriorityProAudio: {
+
+ // Save previous thread priority
+ intptr_t priority_prev = GetThreadPriority(GetCurrentThread());
+
+ // Try set new thread priority
+ if (SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST) == FALSE)
+ return paUnanticipatedHostError;
+
+ // Memorize prev priority (pretend to be non NULL pointer by adding 0x80000000 mask)
+ task = (HANDLE)(priority_prev | 0x80000000);
+
+ ret = paNoError;
+
+ break; }
+
+ default:
+ return paUnanticipatedHostError;
+ }
+#endif
+
+ (*pTask) = task;
+ return ret;
+}
+
+// ------------------------------------------------------------------------------------------
+PaError PaWasapi_ThreadPriorityRevert(void *pTask)
+{
+ if (pTask == NULL)
+ return paUnanticipatedHostError;
+
+#ifndef PA_WINRT
+ MMCSS_deactivate((HANDLE)pTask);
+#else
+ // Revert previous priority by removing 0x80000000 mask
+ if (SetThreadPriority(GetCurrentThread(), (int)((intptr_t)pTask & ~0x80000000)) == FALSE)
+ return paUnanticipatedHostError;
+#endif
+
+ return paNoError;
+}
+
+// ------------------------------------------------------------------------------------------
+// Described at:
+// http://msdn.microsoft.com/en-us/library/dd371387(v=VS.85).aspx
+
+PaError PaWasapi_GetJackCount(PaDeviceIndex device, int *pJackCount)
+{
+#ifndef PA_WINRT
+ PaError ret;
+ HRESULT hr = S_OK;
+ PaWasapiDeviceInfo *deviceInfo;
+ IDeviceTopology *pDeviceTopology = NULL;
+ IConnector *pConnFrom = NULL;
+ IConnector *pConnTo = NULL;
+ IPart *pPart = NULL;
+ IKsJackDescription *pJackDesc = NULL;
+ UINT jackCount = 0;
+
+ if (pJackCount == NULL)
+ return paUnanticipatedHostError;
+
+ if ((ret = _GetWasapiDeviceInfoByDeviceIndex(&deviceInfo, device)) != paNoError)
+ return ret;
+
+ // Get the endpoint device's IDeviceTopology interface
+ hr = IMMDevice_Activate(deviceInfo->device, &pa_IID_IDeviceTopology,
+ CLSCTX_INPROC_SERVER, NULL, (void**)&pDeviceTopology);
+ IF_FAILED_JUMP(hr, error);
+
+ // The device topology for an endpoint device always contains just one connector (connector number 0)
+ hr = IDeviceTopology_GetConnector(pDeviceTopology, 0, &pConnFrom);
+ IF_FAILED_JUMP(hr, error);
+
+ // Step across the connection to the jack on the adapter
+ hr = IConnector_GetConnectedTo(pConnFrom, &pConnTo);
+ if (HRESULT_FROM_WIN32(ERROR_PATH_NOT_FOUND) == hr)
+ {
+ // The adapter device is not currently active
+ hr = E_NOINTERFACE;
+ }
+ IF_FAILED_JUMP(hr, error);
+
+ // Get the connector's IPart interface
+ hr = IConnector_QueryInterface(pConnTo, &pa_IID_IPart, (void**)&pPart);
+ IF_FAILED_JUMP(hr, error);
+
+ // Activate the connector's IKsJackDescription interface
+ hr = IPart_Activate(pPart, CLSCTX_INPROC_SERVER, &pa_IID_IKsJackDescription, (void**)&pJackDesc);
+ IF_FAILED_JUMP(hr, error);
+
+ // Return jack count for this device
+ hr = IKsJackDescription_GetJackCount(pJackDesc, &jackCount);
+ IF_FAILED_JUMP(hr, error);
+
+ // Set.
+ (*pJackCount) = jackCount;
+
+ // Ok.
+ ret = paNoError;
+
+error:
+
+ SAFE_RELEASE(pDeviceTopology);
+ SAFE_RELEASE(pConnFrom);
+ SAFE_RELEASE(pConnTo);
+ SAFE_RELEASE(pPart);
+ SAFE_RELEASE(pJackDesc);
+
+ LogHostError(hr);
+ return paNoError;
+#else
+ (void)device;
+ (void)pJackCount;
+ return paUnanticipatedHostError;
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+#ifndef PA_WINRT
+static PaWasapiJackConnectionType _ConvertJackConnectionTypeWASAPIToPA(int connType)
+{
+ switch (connType)
+ {
+ case eConnTypeUnknown: return eJackConnTypeUnknown;
+#ifdef _KS_
+ case eConnType3Point5mm: return eJackConnType3Point5mm;
+#else
+ case eConnTypeEighth: return eJackConnType3Point5mm;
+#endif
+ case eConnTypeQuarter: return eJackConnTypeQuarter;
+ case eConnTypeAtapiInternal: return eJackConnTypeAtapiInternal;
+ case eConnTypeRCA: return eJackConnTypeRCA;
+ case eConnTypeOptical: return eJackConnTypeOptical;
+ case eConnTypeOtherDigital: return eJackConnTypeOtherDigital;
+ case eConnTypeOtherAnalog: return eJackConnTypeOtherAnalog;
+ case eConnTypeMultichannelAnalogDIN: return eJackConnTypeMultichannelAnalogDIN;
+ case eConnTypeXlrProfessional: return eJackConnTypeXlrProfessional;
+ case eConnTypeRJ11Modem: return eJackConnTypeRJ11Modem;
+ case eConnTypeCombination: return eJackConnTypeCombination;
+ }
+ return eJackConnTypeUnknown;
+}
+#endif
+
+// ------------------------------------------------------------------------------------------
+#ifndef PA_WINRT
+static PaWasapiJackGeoLocation _ConvertJackGeoLocationWASAPIToPA(int geoLoc)
+{
+ switch (geoLoc)
+ {
+ case eGeoLocRear: return eJackGeoLocRear;
+ case eGeoLocFront: return eJackGeoLocFront;
+ case eGeoLocLeft: return eJackGeoLocLeft;
+ case eGeoLocRight: return eJackGeoLocRight;
+ case eGeoLocTop: return eJackGeoLocTop;
+ case eGeoLocBottom: return eJackGeoLocBottom;
+#ifdef _KS_
+ case eGeoLocRearPanel: return eJackGeoLocRearPanel;
+#else
+ case eGeoLocRearOPanel: return eJackGeoLocRearPanel;
+#endif
+ case eGeoLocRiser: return eJackGeoLocRiser;
+ case eGeoLocInsideMobileLid: return eJackGeoLocInsideMobileLid;
+ case eGeoLocDrivebay: return eJackGeoLocDrivebay;
+ case eGeoLocHDMI: return eJackGeoLocHDMI;
+ case eGeoLocOutsideMobileLid: return eJackGeoLocOutsideMobileLid;
+ case eGeoLocATAPI: return eJackGeoLocATAPI;
+ }
+ return eJackGeoLocUnk;
+}
+#endif
+
+// ------------------------------------------------------------------------------------------
+#ifndef PA_WINRT
+static PaWasapiJackGenLocation _ConvertJackGenLocationWASAPIToPA(int genLoc)
+{
+ switch (genLoc)
+ {
+ case eGenLocPrimaryBox: return eJackGenLocPrimaryBox;
+ case eGenLocInternal: return eJackGenLocInternal;
+#ifdef _KS_
+ case eGenLocSeparate: return eJackGenLocSeparate;
+#else
+ case eGenLocSeperate: return eJackGenLocSeparate;
+#endif
+ case eGenLocOther: return eJackGenLocOther;
+ }
+ return eJackGenLocPrimaryBox;
+}
+#endif
+
+// ------------------------------------------------------------------------------------------
+#ifndef PA_WINRT
+static PaWasapiJackPortConnection _ConvertJackPortConnectionWASAPIToPA(int portConn)
+{
+ switch (portConn)
+ {
+ case ePortConnJack: return eJackPortConnJack;
+ case ePortConnIntegratedDevice: return eJackPortConnIntegratedDevice;
+ case ePortConnBothIntegratedAndJack: return eJackPortConnBothIntegratedAndJack;
+ case ePortConnUnknown: return eJackPortConnUnknown;
+ }
+ return eJackPortConnJack;
+}
+#endif
+
+// ------------------------------------------------------------------------------------------
+// Described at:
+// http://msdn.microsoft.com/en-us/library/dd371387(v=VS.85).aspx
+
+PaError PaWasapi_GetJackDescription(PaDeviceIndex device, int jackIndex, PaWasapiJackDescription *pJackDescription)
+{
+#ifndef PA_WINRT
+ PaError ret;
+ HRESULT hr = S_OK;
+ PaWasapiDeviceInfo *deviceInfo;
+ IDeviceTopology *pDeviceTopology = NULL;
+ IConnector *pConnFrom = NULL;
+ IConnector *pConnTo = NULL;
+ IPart *pPart = NULL;
+ IKsJackDescription *pJackDesc = NULL;
+ KSJACK_DESCRIPTION jack = { 0 };
+
+ if ((ret = _GetWasapiDeviceInfoByDeviceIndex(&deviceInfo, device)) != paNoError)
+ return ret;
+
+ // Get the endpoint device's IDeviceTopology interface
+ hr = IMMDevice_Activate(deviceInfo->device, &pa_IID_IDeviceTopology,
+ CLSCTX_INPROC_SERVER, NULL, (void**)&pDeviceTopology);
+ IF_FAILED_JUMP(hr, error);
+
+ // The device topology for an endpoint device always contains just one connector (connector number 0)
+ hr = IDeviceTopology_GetConnector(pDeviceTopology, 0, &pConnFrom);
+ IF_FAILED_JUMP(hr, error);
+
+ // Step across the connection to the jack on the adapter
+ hr = IConnector_GetConnectedTo(pConnFrom, &pConnTo);
+ if (HRESULT_FROM_WIN32(ERROR_PATH_NOT_FOUND) == hr)
+ {
+ // The adapter device is not currently active
+ hr = E_NOINTERFACE;
+ }
+ IF_FAILED_JUMP(hr, error);
+
+ // Get the connector's IPart interface
+ hr = IConnector_QueryInterface(pConnTo, &pa_IID_IPart, (void**)&pPart);
+ IF_FAILED_JUMP(hr, error);
+
+ // Activate the connector's IKsJackDescription interface
+ hr = IPart_Activate(pPart, CLSCTX_INPROC_SERVER, &pa_IID_IKsJackDescription, (void**)&pJackDesc);
+ IF_FAILED_JUMP(hr, error);
+
+ // Test to return jack description struct for index 0
+ hr = IKsJackDescription_GetJackDescription(pJackDesc, jackIndex, &jack);
+ IF_FAILED_JUMP(hr, error);
+
+ // Convert WASAPI values to PA format
+ pJackDescription->channelMapping = jack.ChannelMapping;
+ pJackDescription->color = jack.Color;
+ pJackDescription->connectionType = _ConvertJackConnectionTypeWASAPIToPA(jack.ConnectionType);
+ pJackDescription->genLocation = _ConvertJackGenLocationWASAPIToPA(jack.GenLocation);
+ pJackDescription->geoLocation = _ConvertJackGeoLocationWASAPIToPA(jack.GeoLocation);
+ pJackDescription->isConnected = jack.IsConnected;
+ pJackDescription->portConnection = _ConvertJackPortConnectionWASAPIToPA(jack.PortConnection);
+
+ // Ok
+ ret = paNoError;
+
+error:
+
+ SAFE_RELEASE(pDeviceTopology);
+ SAFE_RELEASE(pConnFrom);
+ SAFE_RELEASE(pConnTo);
+ SAFE_RELEASE(pPart);
+ SAFE_RELEASE(pJackDesc);
+
+ LogHostError(hr);
+ return ret;
+
+#else
+ (void)device;
+ (void)jackIndex;
+ (void)pJackDescription;
+ return paUnanticipatedHostError;
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+PaError PaWasapi_GetAudioClient(PaStream *pStream, void **pAudioClient, int bOutput)
+{
+ PaWasapiStream *stream = (PaWasapiStream *)pStream;
+ if (stream == NULL)
+ return paBadStreamPtr;
+
+ if (pAudioClient == NULL)
+ return paUnanticipatedHostError;
+
+ (*pAudioClient) = (bOutput == TRUE ? stream->out.clientParent : stream->in.clientParent);
+
+ return paNoError;
+}
+
+// ------------------------------------------------------------------------------------------
+#ifdef PA_WINRT
+static void CopyNameOrIdString(WCHAR *dst, const UINT32 dstMaxCount, const WCHAR *src)
+{
+ UINT32 i;
+
+ for (i = 0; i < dstMaxCount; ++i)
+ dst[i] = 0;
+
+ if (src != NULL)
+ {
+ for (i = 0; (src[i] != 0) && (i < dstMaxCount); ++i)
+ dst[i] = src[i];
+ }
+}
+#endif
+
+// ------------------------------------------------------------------------------------------
+PaError PaWasapiWinrt_SetDefaultDeviceId( const unsigned short *pId, int bOutput )
+{
+#ifdef PA_WINRT
+ INT32 i;
+ PaWasapiWinrtDeviceListRole *role = (bOutput ? &g_DeviceListInfo.render : &g_DeviceListInfo.capture);
+
+ assert(STATIC_ARRAY_SIZE(role->defaultId) == PA_WASAPI_DEVICE_ID_LEN);
+
+ // Validate Id length
+ if (pId != NULL)
+ {
+ for (i = 0; pId[i] != 0; ++i)
+ {
+ if (i >= PA_WASAPI_DEVICE_ID_LEN)
+ return paBufferTooBig;
+ }
+ }
+
+ // Set Id (or reset to all 0 if NULL is provided)
+ CopyNameOrIdString(role->defaultId, STATIC_ARRAY_SIZE(role->defaultId), pId);
+
+ return paNoError;
+#else
+ return paIncompatibleStreamHostApi;
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+PaError PaWasapiWinrt_PopulateDeviceList( const unsigned short **pId, const unsigned short **pName,
+ const PaWasapiDeviceRole *pRole, unsigned int count, int bOutput )
+{
+#ifdef PA_WINRT
+ UINT32 i, j;
+ PaWasapiWinrtDeviceListRole *role = (bOutput ? &g_DeviceListInfo.render : &g_DeviceListInfo.capture);
+
+ memset(&role->devices, 0, sizeof(role->devices));
+ role->deviceCount = 0;
+
+ if (count == 0)
+ return paNoError;
+ else
+ if (count > PA_WASAPI_DEVICE_MAX_COUNT)
+ return paBufferTooBig;
+
+ // pName or pRole are optional
+ if (pId == NULL)
+ return paInsufficientMemory;
+
+ // Validate Id and Name lengths
+ for (i = 0; i < count; ++i)
+ {
+ const unsigned short *id = pId[i];
+ const unsigned short *name = pName[i];
+
+ for (j = 0; id[j] != 0; ++j)
+ {
+ if (j >= PA_WASAPI_DEVICE_ID_LEN)
+ return paBufferTooBig;
+ }
+
+ for (j = 0; name[j] != 0; ++j)
+ {
+ if (j >= PA_WASAPI_DEVICE_NAME_LEN)
+ return paBufferTooBig;
+ }
+ }
+
+ // Set Id and Name (or reset to all 0 if NULL is provided)
+ for (i = 0; i < count; ++i)
+ {
+ CopyNameOrIdString(role->devices[i].id, STATIC_ARRAY_SIZE(role->devices[i].id), pId[i]);
+ CopyNameOrIdString(role->devices[i].name, STATIC_ARRAY_SIZE(role->devices[i].name), pName[i]);
+ role->devices[i].formFactor = (pRole != NULL ? (EndpointFormFactor)pRole[i] : UnknownFormFactor);
+
+ // Count device if it has at least the Id
+ role->deviceCount += (role->devices[i].id[0] != 0);
+ }
+
+ return paNoError;
+#else
+ return paIncompatibleStreamHostApi;
+#endif
+}
+
+// ------------------------------------------------------------------------------------------
+PaError PaWasapi_SetStreamStateHandler( PaStream *pStream, PaWasapiStreamStateCallback fnStateHandler, void *pUserData )
+{
+ PaWasapiStream *stream = (PaWasapiStream *)pStream;
+ if (stream == NULL)
+ return paBadStreamPtr;
+
+ stream->fnStateHandler = fnStateHandler;
+ stream->pStateHandlerUserData = pUserData;
+
+ return paNoError;
+}
+
+// ------------------------------------------------------------------------------------------
+HRESULT _PollGetOutputFramesAvailable(PaWasapiStream *stream, UINT32 *available)
+{
+ HRESULT hr;
+ UINT32 frames = stream->out.framesPerHostCallback,
+ padding = 0;
+
+ (*available) = 0;
+
+ // get read position
+ if ((hr = IAudioClient_GetCurrentPadding(stream->out.clientProc, &padding)) != S_OK)
+ return LogHostError(hr);
+
+ // get available
+ frames -= padding;
+
+ // set
+ (*available) = frames;
+ return hr;
+}
+
+// ------------------------------------------------------------------------------------------
+HRESULT _PollGetInputFramesAvailable(PaWasapiStream *stream, UINT32 *available)
+{
+ HRESULT hr;
+
+ (*available) = 0;
+
+ // GetCurrentPadding() has opposite meaning to Output stream
+ if ((hr = IAudioClient_GetCurrentPadding(stream->in.clientProc, available)) != S_OK)
+ return LogHostError(hr);
+
+ return hr;
+}
+
+// ------------------------------------------------------------------------------------------
+static HRESULT ProcessOutputBuffer(PaWasapiStream *stream, PaWasapiHostProcessor *processor, UINT32 frames)
+{
+ HRESULT hr;
+ BYTE *data = NULL;
+
+ // Get buffer
+ if ((hr = IAudioRenderClient_GetBuffer(stream->renderClient, frames, &data)) != S_OK)
+ {
+ // Both modes, Shared and Exclusive, can fail with AUDCLNT_E_BUFFER_TOO_LARGE error
+ #if 0
+ if (stream->out.shareMode == AUDCLNT_SHAREMODE_SHARED)
+ {
+ // Using GetCurrentPadding to overcome AUDCLNT_E_BUFFER_TOO_LARGE in
+ // shared mode results in no sound in Event-driven mode (MSDN does not
+ // document this, or is it WASAPI bug?), thus we better
+ // try to acquire buffer next time when GetBuffer allows to do so.
+ #if 0
+ // Get Read position
+ UINT32 padding = 0;
+ hr = IAudioClient_GetCurrentPadding(stream->out.clientProc, &padding);
+ if (hr != S_OK)
+ return LogHostError(hr);
+
+ // Get frames to write
+ frames -= padding;
+ if (frames == 0)
+ return S_OK;
+
+ if ((hr = IAudioRenderClient_GetBuffer(stream->renderClient, frames, &data)) != S_OK)
+ return LogHostError(hr);
+ #else
+ if (hr == AUDCLNT_E_BUFFER_TOO_LARGE)
+ return S_OK; // be silent in shared mode, try again next time
+ #endif
+ }
+ else
+ return LogHostError(hr);
+ #else
+ if (hr == AUDCLNT_E_BUFFER_TOO_LARGE)
+ return S_OK; // try again next time
+
+ return LogHostError(hr);
+ #endif
+ }
+
+ // Process data
+ if (stream->out.monoMixer != NULL)
+ {
+ // expand buffer
+ UINT32 mono_frames_size = frames * (stream->out.wavex.Format.wBitsPerSample / 8);
+ if (mono_frames_size > stream->out.monoBufferSize)
+ {
+ stream->out.monoBuffer = PaWasapi_ReallocateMemory(stream->out.monoBuffer, (stream->out.monoBufferSize = mono_frames_size));
+ if (stream->out.monoBuffer == NULL)
+ {
+ hr = E_OUTOFMEMORY;
+ LogHostError(hr);
+ return hr;
+ }
+ }
+
+ // process
+ processor[S_OUTPUT].processor(NULL, 0, (BYTE *)stream->out.monoBuffer, frames, processor[S_OUTPUT].userData);
+
+ // mix 1 to 2 channels
+ stream->out.monoMixer(data, stream->out.monoBuffer, frames);
+ }
+ else
+ {
+ processor[S_OUTPUT].processor(NULL, 0, data, frames, processor[S_OUTPUT].userData);
+ }
+
+ // Release buffer
+ if ((hr = IAudioRenderClient_ReleaseBuffer(stream->renderClient, frames, 0)) != S_OK)
+ LogHostError(hr);
+
+ return hr;
+}
+
+// ------------------------------------------------------------------------------------------
+static HRESULT ProcessInputBuffer(PaWasapiStream *stream, PaWasapiHostProcessor *processor)
+{
+ HRESULT hr = S_OK;
+ UINT32 frames;
+ BYTE *data = NULL;
+ DWORD flags = 0;
+
+ for (;;)
+ {
+ // Check if blocking call must be interrupted
+ if (WaitForSingleObject(stream->hCloseRequest, 0) != WAIT_TIMEOUT)
+ break;
+
+ // Find out if any frames available
+ frames = 0;
+ if ((hr = _PollGetInputFramesAvailable(stream, &frames)) != S_OK)
+ return hr;
+
+ // Empty/consumed buffer
+ if (frames == 0)
+ break;
+
+ // Get the available data in the shared buffer.
+ if ((hr = IAudioCaptureClient_GetBuffer(stream->captureClient, &data, &frames, &flags, NULL, NULL)) != S_OK)
+ {
+ if (hr == AUDCLNT_S_BUFFER_EMPTY)
+ {
+ hr = S_OK;
+ break; // Empty/consumed buffer
+ }
+
+ return LogHostError(hr);
+ break;
+ }
+
+ // Detect silence
+ // if (flags & AUDCLNT_BUFFERFLAGS_SILENT)
+ // data = NULL;
+
+ // Process data
+ if (stream->in.monoMixer != NULL)
+ {
+ // expand buffer
+ UINT32 mono_frames_size = frames * (stream->in.wavex.Format.wBitsPerSample / 8);
+ if (mono_frames_size > stream->in.monoBufferSize)
+ {
+ stream->in.monoBuffer = PaWasapi_ReallocateMemory(stream->in.monoBuffer, (stream->in.monoBufferSize = mono_frames_size));
+ if (stream->in.monoBuffer == NULL)
+ {
+ hr = E_OUTOFMEMORY;
+ LogHostError(hr);
+ return hr;
+ }
+ }
+
+ // mix 1 to 2 channels
+ stream->in.monoMixer(stream->in.monoBuffer, data, frames);
+
+ // process
+ processor[S_INPUT].processor((BYTE *)stream->in.monoBuffer, frames, NULL, 0, processor[S_INPUT].userData);
+ }
+ else
+ {
+ processor[S_INPUT].processor(data, frames, NULL, 0, processor[S_INPUT].userData);
+ }
+
+ // Release buffer
+ if ((hr = IAudioCaptureClient_ReleaseBuffer(stream->captureClient, frames)) != S_OK)
+ return LogHostError(hr);
+
+ //break;
+ }
+
+ return hr;
+}
+
+// ------------------------------------------------------------------------------------------
+void _StreamOnStop(PaWasapiStream *stream)
+{
+ // Stop INPUT/OUTPUT clients
+ if (!stream->bBlocking)
+ {
+ if (stream->in.clientProc != NULL)
+ IAudioClient_Stop(stream->in.clientProc);
+ if (stream->out.clientProc != NULL)
+ IAudioClient_Stop(stream->out.clientProc);
+ }
+ else
+ {
+ if (stream->in.clientParent != NULL)
+ IAudioClient_Stop(stream->in.clientParent);
+ if (stream->out.clientParent != NULL)
+ IAudioClient_Stop(stream->out.clientParent);
+ }
+
+ // Restore thread priority
+ if (stream->hAvTask != NULL)
+ {
+ PaWasapi_ThreadPriorityRevert(stream->hAvTask);
+ stream->hAvTask = NULL;
+ }
+
+ // Notify
+ if (stream->streamRepresentation.streamFinishedCallback != NULL)
+ stream->streamRepresentation.streamFinishedCallback(stream->streamRepresentation.userData);
+}
+
+// ------------------------------------------------------------------------------------------
+static BOOL PrepareComPointers(PaWasapiStream *stream, BOOL *threadComInitialized)
+{
+ HRESULT hr;
+
+ /*
+ If COM is already initialized CoInitialize will either return
+ FALSE, or RPC_E_CHANGED_MODE if it was initialized in a different
+ threading mode. In either case we shouldn't consider it an error
+ but we need to be careful to not call CoUninitialize() if
+ RPC_E_CHANGED_MODE was returned.
+ */
+ hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
+ if (FAILED(hr) && (hr != RPC_E_CHANGED_MODE))
+ {
+ PRINT(("WASAPI: failed ProcThreadEvent CoInitialize"));
+ return FALSE;
+ }
+ if (hr != RPC_E_CHANGED_MODE)
+ *threadComInitialized = TRUE;
+
+ // Unmarshal stream pointers for safe COM operation
+ hr = UnmarshalStreamComPointers(stream);
+ if (hr != S_OK)
+ {
+ PRINT(("WASAPI: Error unmarshaling stream COM pointers. HRESULT: %i\n", hr));
+ CoUninitialize();
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+// ------------------------------------------------------------------------------------------
+static void FinishComPointers(PaWasapiStream *stream, BOOL threadComInitialized)
+{
+ // Release unmarshaled COM pointers
+ ReleaseUnmarshaledComPointers(stream);
+
+ // Cleanup COM for this thread
+ if (threadComInitialized == TRUE)
+ CoUninitialize();
+}
+
+// ------------------------------------------------------------------------------------------
+PA_THREAD_FUNC ProcThreadEvent(void *param)
+{
+ PaWasapiHostProcessor processor[S_COUNT];
+ HRESULT hr = S_OK;
+ DWORD dwResult;
+ PaWasapiStream *stream = (PaWasapiStream *)param;
+ PaWasapiHostProcessor defaultProcessor;
+ BOOL setEvent[S_COUNT] = { FALSE, FALSE };
+ BOOL waitAllEvents = FALSE;
+ BOOL threadComInitialized = FALSE;
+ SystemTimer timer;
+
+ // Notify: state
+ NotifyStateChanged(stream, paWasapiStreamStateThreadPrepare, ERROR_SUCCESS);
+
+ // Prepare COM pointers
+ if (!PrepareComPointers(stream, &threadComInitialized))
+ return (UINT32)paUnanticipatedHostError;
+
+ // Request fine (1 ms) granularity of the system timer functions for precise operation of waitable timers
+ SystemTimer_SetGranularity(&timer, 1);
+
+ // Waiting on all events in case of Full-Duplex/Exclusive mode.
+ if ((stream->in.clientProc != NULL) && (stream->out.clientProc != NULL))
+ {
+ waitAllEvents = (stream->in.shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE) &&
+ (stream->out.shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE);
+ }
+
+ // Setup data processors
+ defaultProcessor.processor = WaspiHostProcessingLoop;
+ defaultProcessor.userData = stream;
+ processor[S_INPUT] = (stream->hostProcessOverrideInput.processor != NULL ? stream->hostProcessOverrideInput : defaultProcessor);
+ processor[S_OUTPUT] = (stream->hostProcessOverrideOutput.processor != NULL ? stream->hostProcessOverrideOutput : defaultProcessor);
+
+ // Boost thread priority
+ PaWasapi_ThreadPriorityBoost((void **)&stream->hAvTask, stream->nThreadPriority);
+
+ // Create events
+ if (stream->event[S_OUTPUT] == NULL)
+ {
+ stream->event[S_OUTPUT] = CreateEvent(NULL, FALSE, FALSE, NULL);
+ setEvent[S_OUTPUT] = TRUE;
+ }
+ if (stream->event[S_INPUT] == NULL)
+ {
+ stream->event[S_INPUT] = CreateEvent(NULL, FALSE, FALSE, NULL);
+ setEvent[S_INPUT] = TRUE;
+ }
+ if ((stream->event[S_OUTPUT] == NULL) || (stream->event[S_INPUT] == NULL))
+ {
+ PRINT(("WASAPI Thread: failed creating Input/Output event handle\n"));
+ goto thread_error;
+ }
+
+ // Signal: stream running
+ stream->running = TRUE;
+
+ // Notify: thread started
+ SetEvent(stream->hThreadStart);
+
+ // Initialize event & start INPUT stream
+ if (stream->in.clientProc)
+ {
+ // Create & set handle
+ if (setEvent[S_INPUT])
+ {
+ if ((hr = IAudioClient_SetEventHandle(stream->in.clientProc, stream->event[S_INPUT])) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+ }
+
+ // Start
+ if ((hr = IAudioClient_Start(stream->in.clientProc)) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+ }
+
+ // Initialize event & start OUTPUT stream
+ if (stream->out.clientProc)
+ {
+ // Create & set handle
+ if (setEvent[S_OUTPUT])
+ {
+ if ((hr = IAudioClient_SetEventHandle(stream->out.clientProc, stream->event[S_OUTPUT])) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+ }
+
+ // Preload buffer before start
+ if ((hr = ProcessOutputBuffer(stream, processor, stream->out.framesPerBuffer)) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+
+ // Start
+ if ((hr = IAudioClient_Start(stream->out.clientProc)) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+
+ }
+
+ // Notify: state
+ NotifyStateChanged(stream, paWasapiStreamStateThreadStart, ERROR_SUCCESS);
+
+ // Processing Loop
+ for (;;)
+ {
+ // 10 sec timeout (on timeout stream will auto-stop when processed by WAIT_TIMEOUT case)
+ dwResult = WaitForMultipleObjects(S_COUNT, stream->event, waitAllEvents, 10*1000);
+
+ // Check for close event (after wait for buffers to avoid any calls to user
+ // callback when hCloseRequest was set)
+ if (WaitForSingleObject(stream->hCloseRequest, 0) != WAIT_TIMEOUT)
+ break;
+
+ // Process S_INPUT/S_OUTPUT
+ switch (dwResult)
+ {
+ case WAIT_TIMEOUT: {
+ PRINT(("WASAPI Thread: WAIT_TIMEOUT - probably bad audio driver or Vista x64 bug: use paWinWasapiPolling instead\n"));
+ goto thread_end;
+ break; }
+
+ // Input stream
+ case WAIT_OBJECT_0 + S_INPUT: {
+
+ if (stream->captureClient == NULL)
+ break;
+
+ if ((hr = ProcessInputBuffer(stream, processor)) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+
+ break; }
+
+ // Output stream
+ case WAIT_OBJECT_0 + S_OUTPUT: {
+
+ if (stream->renderClient == NULL)
+ break;
+
+ if ((hr = ProcessOutputBuffer(stream, processor, stream->out.framesPerBuffer)) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+
+ break; }
+ }
+ }
+
+thread_end:
+
+ // Process stop
+ _StreamOnStop(stream);
+
+ // Release unmarshaled COM pointers
+ FinishComPointers(stream, threadComInitialized);
+
+ // Restore system timer granularity
+ SystemTimer_RestoreGranularity(&timer);
+
+ // Notify: not running
+ stream->running = FALSE;
+
+ // Notify: thread exited
+ SetEvent(stream->hThreadExit);
+
+ // Notify: state
+ NotifyStateChanged(stream, paWasapiStreamStateThreadStop, hr);
+
+ return 0;
+
+thread_error:
+
+ // Prevent deadlocking in Pa_StreamStart
+ SetEvent(stream->hThreadStart);
+
+ // Exit
+ goto thread_end;
+}
+
+// ------------------------------------------------------------------------------------------
+static UINT32 GetSleepTime(PaWasapiStream *stream, UINT32 sleepTimeIn, UINT32 sleepTimeOut, UINT32 userFramesOut)
+{
+ UINT32 sleepTime;
+
+ // According to the issue [https://github.com/PortAudio/portaudio/issues/303] glitches may occur when user frames
+ // equal to 1/2 of the host buffer frames, therefore the empirical workaround for this problem is to lower
+ // the sleep time by 2
+ if (userFramesOut != 0)
+ {
+ UINT32 chunks = stream->out.framesPerHostCallback / userFramesOut;
+ if (chunks <= 2)
+ {
+ sleepTimeOut /= 2;
+ PRINT(("WASAPI: underrun workaround, sleep [%d] ms - 1/2 of the user buffer[%d] | host buffer[%d]\n", sleepTimeOut, userFramesOut, stream->out.framesPerHostCallback));
+ }
+ }
+
+ // Choose the smallest
+ if ((sleepTimeIn != 0) && (sleepTimeOut != 0))
+ sleepTime = min(sleepTimeIn, sleepTimeOut);
+ else
+ sleepTime = (sleepTimeIn ? sleepTimeIn : sleepTimeOut);
+
+ return sleepTime;
+}
+
+// ------------------------------------------------------------------------------------------
+static UINT32 ConfigureLoopSleepTimeAndScheduler(PaWasapiStream *stream, ThreadIdleScheduler *scheduler)
+{
+ UINT32 sleepTime, sleepTimeIn, sleepTimeOut;
+ UINT32 userFramesIn = stream->in.framesPerHostCallback / WASAPI_PACKETS_PER_INPUT_BUFFER;
+ UINT32 userFramesOut = stream->out.framesPerBuffer;
+
+ // Adjust polling time for non-paUtilFixedHostBufferSize, input stream is not adjustable as it is being
+ // polled according to its packet length
+ if (stream->bufferMode != paUtilFixedHostBufferSize)
+ {
+ userFramesOut = (stream->bufferProcessor.framesPerUserBuffer ? stream->bufferProcessor.framesPerUserBuffer :
+ stream->out.params.frames_per_buffer);
+ }
+
+ // Calculate timeout for the next polling attempt
+ sleepTimeIn = GetFramesSleepTime(userFramesIn, stream->in.wavex.Format.nSamplesPerSec);
+ sleepTimeOut = GetFramesSleepTime(userFramesOut, stream->out.wavex.Format.nSamplesPerSec);
+
+ // WASAPI input packets tend to expire very easily, let's limit sleep time to 2 milliseconds
+ // for all cases. Please propose better solution if any
+ if (sleepTimeIn > 2)
+ sleepTimeIn = 2;
+
+ sleepTime = GetSleepTime(stream, sleepTimeIn, sleepTimeOut, userFramesOut);
+
+ // Make sure not 0, othervise use ThreadIdleScheduler to bounce between [0, 1] ms to avoid too busy loop
+ if (sleepTime == 0)
+ {
+ sleepTimeIn = GetFramesSleepTimeMicroseconds(userFramesIn, stream->in.wavex.Format.nSamplesPerSec);
+ sleepTimeOut = GetFramesSleepTimeMicroseconds(userFramesOut, stream->out.wavex.Format.nSamplesPerSec);
+
+ sleepTime = GetSleepTime(stream, sleepTimeIn, sleepTimeOut, userFramesOut);
+
+ // Setup thread sleep scheduler
+ ThreadIdleScheduler_Setup(scheduler, 1, sleepTime/* microseconds here */);
+ sleepTime = 0;
+ }
+
+ return sleepTime;
+}
+
+// ------------------------------------------------------------------------------------------
+static inline INT32 GetNextSleepTime(SystemTimer *timer, ThreadIdleScheduler *scheduler, LONGLONG startTime,
+ UINT32 sleepTime)
+{
+ INT32 nextSleepTime;
+ INT32 procTime;
+
+ // Get next sleep time
+ if (sleepTime == 0)
+ nextSleepTime = ThreadIdleScheduler_NextSleep(scheduler);
+ else
+ nextSleepTime = sleepTime;
+
+ // Adjust next sleep time dynamically depending on how much time was spent in ProcessOutputBuffer/ProcessInputBuffer
+ // therefore periodicity will not jitter or be increased for the amount of time spent in processing;
+ // example when sleepTime is 10 ms where [] is polling time slot, {} processing time slot:
+ //
+ // [9],{2},[8],{1},[9],{1},[9],{3},[7],{2},[8],{3},[7],{2},[8],{2},[8],{3},[7],{2},[8],...
+ //
+ procTime = (INT32)(SystemTimer_GetTime(timer) - startTime);
+ nextSleepTime -= procTime;
+ if (nextSleepTime < timer->granularity)
+ nextSleepTime = 0;
+ else
+ if (timer->granularity > 1)
+ nextSleepTime = ALIGN_BWD(nextSleepTime, timer->granularity);
+
+#ifdef PA_WASAPI_LOG_TIME_SLOTS
+ printf("{%d},", procTime);
+#endif
+
+ return nextSleepTime;
+}
+
+// ------------------------------------------------------------------------------------------
+PA_THREAD_FUNC ProcThreadPoll(void *param)
+{
+ PaWasapiHostProcessor processor[S_COUNT];
+ HRESULT hr = S_OK;
+ PaWasapiStream *stream = (PaWasapiStream *)param;
+ PaWasapiHostProcessor defaultProcessor;
+ INT32 i;
+ ThreadIdleScheduler scheduler;
+ SystemTimer timer;
+ LONGLONG startTime;
+ UINT32 sleepTime;
+ INT32 nextSleepTime = 0; //! Do first loop without waiting as time could be spent when calling other APIs before ProcessXXXBuffer.
+ BOOL threadComInitialized = FALSE;
+#ifdef PA_WASAPI_LOG_TIME_SLOTS
+ LONGLONG startWaitTime;
+#endif
+
+ // Notify: state
+ NotifyStateChanged(stream, paWasapiStreamStateThreadPrepare, ERROR_SUCCESS);
+
+ // Prepare COM pointers
+ if (!PrepareComPointers(stream, &threadComInitialized))
+ return (UINT32)paUnanticipatedHostError;
+
+ // Request fine (1 ms) granularity of the system timer functions to guarantee correct logic around WaitForSingleObject
+ SystemTimer_SetGranularity(&timer, 1);
+
+ // Calculate sleep time of the processing loop (inside WaitForSingleObject)
+ sleepTime = ConfigureLoopSleepTimeAndScheduler(stream, &scheduler);
+
+ // Setup data processors
+ defaultProcessor.processor = WaspiHostProcessingLoop;
+ defaultProcessor.userData = stream;
+ processor[S_INPUT] = (stream->hostProcessOverrideInput.processor != NULL ? stream->hostProcessOverrideInput : defaultProcessor);
+ processor[S_OUTPUT] = (stream->hostProcessOverrideOutput.processor != NULL ? stream->hostProcessOverrideOutput : defaultProcessor);
+
+ // Boost thread priority
+ PaWasapi_ThreadPriorityBoost((void **)&stream->hAvTask, stream->nThreadPriority);
+
+ // Signal: stream running
+ stream->running = TRUE;
+
+ // Notify: thread started
+ SetEvent(stream->hThreadStart);
+
+ // Initialize event & start INPUT stream
+ if (stream->in.clientProc)
+ {
+ if ((hr = IAudioClient_Start(stream->in.clientProc)) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+ }
+
+ // Initialize event & start OUTPUT stream
+ if (stream->out.clientProc)
+ {
+ // Preload buffer (obligatory, othervise ->Start() will fail), avoid processing
+ // when in full-duplex mode as it requires input processing as well
+ if (!PA_WASAPI__IS_FULLDUPLEX(stream))
+ {
+ UINT32 frames = 0;
+ if ((hr = _PollGetOutputFramesAvailable(stream, &frames)) == S_OK)
+ {
+ if (stream->bufferMode == paUtilFixedHostBufferSize)
+ {
+ // It is important to preload whole host buffer to avoid underruns/glitches when stream is started,
+ // for more details see the discussion: https://github.com/PortAudio/portaudio/issues/303
+ while (frames >= stream->out.framesPerBuffer)
+ {
+ if ((hr = ProcessOutputBuffer(stream, processor, stream->out.framesPerBuffer)) != S_OK)
+ {
+ LogHostError(hr); // not fatal, just log
+ break;
+ }
+
+ frames -= stream->out.framesPerBuffer;
+ }
+ }
+ else
+ {
+ // Some devices may not start (will get stuck with 0 ready frames) if data not prefetched
+ if (frames == 0)
+ frames = stream->out.framesPerBuffer;
+
+ // USB DACs report large buffer in Exclusive mode and if it is filled fully will stuck in
+ // non playing state, e.g. IAudioClient_GetCurrentPadding() will start reporting max buffer size
+ // constantly, thus preload data size equal to the user buffer to allow process going
+ if ((stream->out.shareMode == AUDCLNT_SHAREMODE_EXCLUSIVE) && (frames >= (stream->out.framesPerBuffer * 2)))
+ frames -= stream->out.framesPerBuffer;
+
+ if ((hr = ProcessOutputBuffer(stream, processor, frames)) != S_OK)
+ {
+ LogHostError(hr); // not fatal, just log
+ }
+ }
+ }
+ else
+ {
+ LogHostError(hr); // not fatal, just log
+ }
+ }
+
+ // Start
+ if ((hr = IAudioClient_Start(stream->out.clientProc)) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+ }
+
+ // Notify: state
+ NotifyStateChanged(stream, paWasapiStreamStateThreadStart, ERROR_SUCCESS);
+
+#ifdef PA_WASAPI_LOG_TIME_SLOTS
+ startWaitTime = SystemTimer_GetTime(&timer);
+#endif
+
+ if (!PA_WASAPI__IS_FULLDUPLEX(stream))
+ {
+ // Processing Loop
+ while (WaitForSingleObject(stream->hCloseRequest, nextSleepTime) == WAIT_TIMEOUT)
+ {
+ startTime = SystemTimer_GetTime(&timer);
+
+ #ifdef PA_WASAPI_LOG_TIME_SLOTS
+ printf("[%d|%d],", nextSleepTime, (INT32)(startTime - startWaitTime));
+ #endif
+
+ for (i = 0; i < S_COUNT; ++i)
+ {
+ // Process S_INPUT/S_OUTPUT
+ switch (i)
+ {
+ // Input stream
+ case S_INPUT: {
+
+ if (stream->captureClient == NULL)
+ break;
+
+ if ((hr = ProcessInputBuffer(stream, processor)) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+
+ break; }
+
+ // Output stream
+ case S_OUTPUT: {
+
+ UINT32 framesAvail;
+
+ if (stream->renderClient == NULL)
+ break;
+
+ // Get available frames
+ if ((hr = _PollGetOutputFramesAvailable(stream, &framesAvail)) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+
+ // Output data to the user callback
+ if (stream->bufferMode == paUtilFixedHostBufferSize)
+ {
+ UINT32 framesProc = stream->out.framesPerBuffer;
+
+ // If we got less frames avoid sleeping again as it might be the corner case and buffer
+ // has sufficient number of frames now, in case 'out.framesPerBuffer' is 1/2 of the host
+ // buffer sleeping again may cause underruns. Do short busy waiting (normally might take
+ // 1-2 iterations)
+ if (framesAvail < framesProc)
+ {
+ nextSleepTime = 0;
+ continue;
+ }
+
+ while (framesAvail >= framesProc)
+ {
+ if ((hr = ProcessOutputBuffer(stream, processor, framesProc)) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+
+ framesAvail -= framesProc;
+ }
+ }
+ else
+ if (framesAvail != 0)
+ {
+ if ((hr = ProcessOutputBuffer(stream, processor, framesAvail)) != S_OK)
+ {
+ LogHostError(hr);
+ goto thread_error;
+ }
+ }
+
+ break; }
+ }
+ }
+
+ // Get next sleep time
+ nextSleepTime = GetNextSleepTime(&timer, &scheduler, startTime, sleepTime);
+
+ #ifdef PA_WASAPI_LOG_TIME_SLOTS
+ startWaitTime = SystemTimer_GetTime(&timer);
+ #endif
+ }
+ }
+ else
+ {
+ // Processing Loop (full-duplex)
+ while (WaitForSingleObject(stream->hCloseRequest, nextSleepTime) == WAIT_TIMEOUT)
+ {
+ UINT32 i_frames = 0, i_processed = 0, o_frames = 0;
+ BYTE *i_data = NULL, *o_data = NULL, *o_data_host = NULL;
+ DWORD i_flags = 0;
+
+ startTime = SystemTimer_GetTime(&timer);
+
+ #ifdef PA_WASAPI_LOG_TIME_SLOTS
+ printf("[%d|%d],", nextSleepTime, (INT32)(startTime - startWaitTime));
+ #endif
+
+ // get available frames
+ if ((hr = _PollGetOutputFramesAvailable(stream, &o_frames)) != S_OK)
+ {
+ LogHostError(hr);
+ break;
+ }
+
+ while (o_frames != 0)
+ {
+ // get host input buffer
+ if ((hr = IAudioCaptureClient_GetBuffer(stream->captureClient, &i_data, &i_frames, &i_flags, NULL, NULL)) != S_OK)
+ {
+ if (hr == AUDCLNT_S_BUFFER_EMPTY)
+ break; // no data in capture buffer
+
+ LogHostError(hr);
+ break;
+ }
+
+ // process equal amount of frames
+ if (o_frames >= i_frames)
+ {
+ // process input amount of frames
+ UINT32 o_processed = i_frames;
+
+ // get host output buffer
+ if ((hr = IAudioRenderClient_GetBuffer(stream->renderClient, o_processed, &o_data)) == S_OK)
+ {
+ // processed amount of i_frames
+ i_processed = i_frames;
+ o_data_host = o_data;
+
+ // convert output mono
+ if (stream->out.monoMixer)
+ {
+ UINT32 mono_frames_size = o_processed * (stream->out.wavex.Format.wBitsPerSample / 8);
+ // expand buffer
+ if (mono_frames_size > stream->out.monoBufferSize)
+ {
+ stream->out.monoBuffer = PaWasapi_ReallocateMemory(stream->out.monoBuffer, (stream->out.monoBufferSize = mono_frames_size));
+ if (stream->out.monoBuffer == NULL)
+ {
+ // release input buffer
+ IAudioCaptureClient_ReleaseBuffer(stream->captureClient, 0);
+ // release output buffer
+ IAudioRenderClient_ReleaseBuffer(stream->renderClient, 0, 0);
+
+ LogPaError(paInsufficientMemory);
+ goto thread_error;
+ }
+ }
+
+ // replace buffer pointer
+ o_data = (BYTE *)stream->out.monoBuffer;
+ }
+
+ // convert input mono
+ if (stream->in.monoMixer)
+ {
+ UINT32 mono_frames_size = i_processed * (stream->in.wavex.Format.wBitsPerSample / 8);
+ // expand buffer
+ if (mono_frames_size > stream->in.monoBufferSize)
+ {
+ stream->in.monoBuffer = PaWasapi_ReallocateMemory(stream->in.monoBuffer, (stream->in.monoBufferSize = mono_frames_size));
+ if (stream->in.monoBuffer == NULL)
+ {
+ // release input buffer
+ IAudioCaptureClient_ReleaseBuffer(stream->captureClient, 0);
+ // release output buffer
+ IAudioRenderClient_ReleaseBuffer(stream->renderClient, 0, 0);
+
+ LogPaError(paInsufficientMemory);
+ goto thread_error;
+ }
+ }
+
+ // mix 2 to 1 input channels
+ stream->in.monoMixer(stream->in.monoBuffer, i_data, i_processed);
+
+ // replace buffer pointer
+ i_data = (BYTE *)stream->in.monoBuffer;
+ }
+
+ // process
+ processor[S_FULLDUPLEX].processor(i_data, i_processed, o_data, o_processed, processor[S_FULLDUPLEX].userData);
+
+ // mix 1 to 2 output channels
+ if (stream->out.monoBuffer)
+ stream->out.monoMixer(o_data_host, stream->out.monoBuffer, o_processed);
+
+ // release host output buffer
+ if ((hr = IAudioRenderClient_ReleaseBuffer(stream->renderClient, o_processed, 0)) != S_OK)
+ LogHostError(hr);
+
+ o_frames -= o_processed;
+ }
+ else
+ {
+ if (stream->out.shareMode != AUDCLNT_SHAREMODE_SHARED)
+ LogHostError(hr); // be silent in shared mode, try again next time
+ }
+ }
+ else
+ {
+ i_processed = 0;
+ goto fd_release_buffer_in;
+ }
+
+fd_release_buffer_in:
+
+ // release host input buffer
+ if ((hr = IAudioCaptureClient_ReleaseBuffer(stream->captureClient, i_processed)) != S_OK)
+ {
+ LogHostError(hr);
+ break;
+ }
+
+ // break processing, input hasn't been accumulated yet
+ if (i_processed == 0)
+ break;
+ }
+
+ // Get next sleep time
+ nextSleepTime = GetNextSleepTime(&timer, &scheduler, startTime, sleepTime);
+
+ #ifdef PA_WASAPI_LOG_TIME_SLOTS
+ startWaitTime = SystemTimer_GetTime(&timer);
+ #endif
+ }
+ }
+
+thread_end:
+
+ // Process stop
+ _StreamOnStop(stream);
+
+ // Release unmarshaled COM pointers
+ FinishComPointers(stream, threadComInitialized);
+
+ // Restore system timer granularity
+ SystemTimer_RestoreGranularity(&timer);
+
+ // Notify: not running
+ stream->running = FALSE;
+
+ // Notify: thread exited
+ SetEvent(stream->hThreadExit);
+
+ // Notify: state
+ NotifyStateChanged(stream, paWasapiStreamStateThreadStop, hr);
+
+ return 0;
+
+thread_error:
+
+ // Prevent deadlocking in Pa_StreamStart
+ SetEvent(stream->hThreadStart);
+
+ // Exit
+ goto thread_end;
+}
+
+// ------------------------------------------------------------------------------------------
+void *PaWasapi_ReallocateMemory(void *prev, size_t size)
+{
+ void *ret = realloc(prev, size);
+ if (ret == NULL)
+ {
+ PaWasapi_FreeMemory(prev);
+ return NULL;
+ }
+ return ret;
+}
+
+// ------------------------------------------------------------------------------------------
+void PaWasapi_FreeMemory(void *ptr)
+{
+ free(ptr);
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-10-31 23:09:44 +0000