diff options
Diffstat (limited to 'portaudio/src/os/win/pa_win_wdmks_utils.c')
| -rw-r--r-- | portaudio/src/os/win/pa_win_wdmks_utils.c | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/portaudio/src/os/win/pa_win_wdmks_utils.c b/portaudio/src/os/win/pa_win_wdmks_utils.c new file mode 100644 index 0000000..3373146 --- /dev/null +++ b/portaudio/src/os/win/pa_win_wdmks_utils.c @@ -0,0 +1,309 @@ +/* + * PortAudio Portable Real-Time Audio Library + * Windows WDM KS utilities + * + * Copyright (c) 1999 - 2007 Andrew Baldwin, Ross Bencina + * + * 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. + */ + +#include <windows.h> +#include <mmreg.h> +#ifndef WAVE_FORMAT_IEEE_FLOAT + #define WAVE_FORMAT_IEEE_FLOAT 0x0003 // MinGW32 does not define this +#endif +#ifndef _WAVEFORMATEXTENSIBLE_ + #define _WAVEFORMATEXTENSIBLE_ // MinGW32 does not define this +#endif +#ifndef _INC_MMREG + #define _INC_MMREG // for STATIC_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT +#endif +#include <winioctl.h> // MinGW32 does not define this automatically + +#if defined(__GNUC__) + +#include "../../hostapi/wasapi/mingw-include/ks.h" +#include "../../hostapi/wasapi/mingw-include/ksmedia.h" + +#else + +#include <ks.h> +#include <ksmedia.h> + +#endif + +#include <stdio.h> // just for some development printfs + +#include "portaudio.h" +#include "pa_util.h" +#include "pa_win_wdmks_utils.h" + + +/* PortAudio-local instances of GUIDs previously sourced from ksguid.lib */ + +/* GUID KSDATAFORMAT_TYPE_AUDIO */ +static const GUID pa_KSDATAFORMAT_TYPE_AUDIO = { STATIC_KSDATAFORMAT_TYPE_AUDIO }; + +/* GUID KSDATAFORMAT_SUBTYPE_IEEE_FLOAT */ +static const GUID pa_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = { STATIC_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT }; + +/* GUID KSDATAFORMAT_SUBTYPE_PCM */ +static const GUID pa_KSDATAFORMAT_SUBTYPE_PCM = { STATIC_KSDATAFORMAT_SUBTYPE_PCM }; + +/* GUID KSDATAFORMAT_SUBTYPE_WAVEFORMATEX */ +static const GUID pa_KSDATAFORMAT_SUBTYPE_WAVEFORMATEX = { STATIC_KSDATAFORMAT_SUBTYPE_WAVEFORMATEX }; + +/* GUID KSMEDIUMSETID_Standard */ +static const GUID pa_KSMEDIUMSETID_Standard = { STATIC_KSMEDIUMSETID_Standard }; + +/* GUID KSINTERFACESETID_Standard */ +static const GUID pa_KSINTERFACESETID_Standard = { STATIC_KSINTERFACESETID_Standard }; + +/* GUID KSPROPSETID_Pin */ +static const GUID pa_KSPROPSETID_Pin = { STATIC_KSPROPSETID_Pin }; + +#define pa_IS_VALID_WAVEFORMATEX_GUID(Guid)\ + (!memcmp(((PUSHORT)&pa_KSDATAFORMAT_SUBTYPE_WAVEFORMATEX) + 1, ((PUSHORT)(Guid)) + 1, sizeof(GUID) - sizeof(USHORT))) + + +static PaError WdmGetPinPropertySimple( + HANDLE handle, + unsigned long pinId, + unsigned long property, + void* value, + unsigned long valueSize ) +{ + DWORD bytesReturned; + KSP_PIN ksPProp; + ksPProp.Property.Set = pa_KSPROPSETID_Pin; + ksPProp.Property.Id = property; + ksPProp.Property.Flags = KSPROPERTY_TYPE_GET; + ksPProp.PinId = pinId; + ksPProp.Reserved = 0; + + if( DeviceIoControl( handle, IOCTL_KS_PROPERTY, &ksPProp, sizeof(KSP_PIN), + value, valueSize, &bytesReturned, NULL ) == 0 || bytesReturned != valueSize ) + { + return paUnanticipatedHostError; + } + else + { + return paNoError; + } +} + + +static PaError WdmGetPinPropertyMulti( + HANDLE handle, + unsigned long pinId, + unsigned long property, + KSMULTIPLE_ITEM** ksMultipleItem) +{ + unsigned long multipleItemSize = 0; + KSP_PIN ksPProp; + DWORD bytesReturned; + + *ksMultipleItem = 0; + + ksPProp.Property.Set = pa_KSPROPSETID_Pin; + ksPProp.Property.Id = property; + ksPProp.Property.Flags = KSPROPERTY_TYPE_GET; + ksPProp.PinId = pinId; + ksPProp.Reserved = 0; + + if( DeviceIoControl( handle, IOCTL_KS_PROPERTY, &ksPProp.Property, + sizeof(KSP_PIN), NULL, 0, &multipleItemSize, NULL ) == 0 && GetLastError() != ERROR_MORE_DATA ) + { + return paUnanticipatedHostError; + } + + *ksMultipleItem = (KSMULTIPLE_ITEM*)PaUtil_AllocateMemory( multipleItemSize ); + if( !*ksMultipleItem ) + { + return paInsufficientMemory; + } + + if( DeviceIoControl( handle, IOCTL_KS_PROPERTY, &ksPProp, sizeof(KSP_PIN), + (void*)*ksMultipleItem, multipleItemSize, &bytesReturned, NULL ) == 0 || bytesReturned != multipleItemSize ) + { + PaUtil_FreeMemory( ksMultipleItem ); + return paUnanticipatedHostError; + } + + return paNoError; +} + + +static int GetKSFilterPinCount( HANDLE deviceHandle ) +{ + DWORD result; + + if( WdmGetPinPropertySimple( deviceHandle, 0, KSPROPERTY_PIN_CTYPES, &result, sizeof(result) ) == paNoError ){ + return result; + }else{ + return 0; + } +} + + +static KSPIN_COMMUNICATION GetKSFilterPinPropertyCommunication( HANDLE deviceHandle, int pinId ) +{ + KSPIN_COMMUNICATION result; + + if( WdmGetPinPropertySimple( deviceHandle, pinId, KSPROPERTY_PIN_COMMUNICATION, &result, sizeof(result) ) == paNoError ){ + return result; + }else{ + return KSPIN_COMMUNICATION_NONE; + } +} + + +static KSPIN_DATAFLOW GetKSFilterPinPropertyDataflow( HANDLE deviceHandle, int pinId ) +{ + KSPIN_DATAFLOW result; + + if( WdmGetPinPropertySimple( deviceHandle, pinId, KSPROPERTY_PIN_DATAFLOW, &result, sizeof(result) ) == paNoError ){ + return result; + }else{ + return (KSPIN_DATAFLOW)0; + } +} + + +static int KSFilterPinPropertyIdentifiersInclude( + HANDLE deviceHandle, int pinId, unsigned long property, const GUID *identifierSet, unsigned long identifierId ) +{ + KSMULTIPLE_ITEM* item = NULL; + KSIDENTIFIER* identifier; + int i; + int result = 0; + + if( WdmGetPinPropertyMulti( deviceHandle, pinId, property, &item) != paNoError ) + return 0; + + identifier = (KSIDENTIFIER*)(item+1); + + for( i = 0; i < (int)item->Count; i++ ) + { + if( !memcmp( (void*)&identifier[i].Set, (void*)identifierSet, sizeof( GUID ) ) && + ( identifier[i].Id == identifierId ) ) + { + result = 1; + break; + } + } + + PaUtil_FreeMemory( item ); + + return result; +} + + +/* return the maximum channel count supported by any pin on the device. + if isInput is non-zero we query input pins, otherwise output pins. +*/ +int PaWin_WDMKS_QueryFilterMaximumChannelCount( void *wcharDevicePath, int isInput ) +{ + HANDLE deviceHandle; + ULONG i; + int pinCount, pinId; + int result = 0; + KSPIN_DATAFLOW requiredDataflowDirection = (isInput ? KSPIN_DATAFLOW_OUT : KSPIN_DATAFLOW_IN ); + + if( !wcharDevicePath ) + return 0; + + deviceHandle = CreateFileW( (LPCWSTR)wcharDevicePath, FILE_SHARE_READ|FILE_SHARE_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL ); + if( deviceHandle == INVALID_HANDLE_VALUE ) + return 0; + + pinCount = GetKSFilterPinCount( deviceHandle ); + for( pinId = 0; pinId < pinCount; ++pinId ) + { + KSPIN_COMMUNICATION communication = GetKSFilterPinPropertyCommunication( deviceHandle, pinId ); + KSPIN_DATAFLOW dataflow = GetKSFilterPinPropertyDataflow( deviceHandle, pinId ); + if( ( dataflow == requiredDataflowDirection ) && + (( communication == KSPIN_COMMUNICATION_SINK) || + ( communication == KSPIN_COMMUNICATION_BOTH)) + && ( KSFilterPinPropertyIdentifiersInclude( deviceHandle, pinId, + KSPROPERTY_PIN_INTERFACES, &pa_KSINTERFACESETID_Standard, KSINTERFACE_STANDARD_STREAMING ) + || KSFilterPinPropertyIdentifiersInclude( deviceHandle, pinId, + KSPROPERTY_PIN_INTERFACES, &pa_KSINTERFACESETID_Standard, KSINTERFACE_STANDARD_LOOPED_STREAMING ) ) + && KSFilterPinPropertyIdentifiersInclude( deviceHandle, pinId, + KSPROPERTY_PIN_MEDIUMS, &pa_KSMEDIUMSETID_Standard, KSMEDIUM_STANDARD_DEVIO ) ) + { + KSMULTIPLE_ITEM* item = NULL; + if( WdmGetPinPropertyMulti( deviceHandle, pinId, KSPROPERTY_PIN_DATARANGES, &item ) == paNoError ) + { + KSDATARANGE *dataRange = (KSDATARANGE*)(item+1); + + for( i=0; i < item->Count; ++i ){ + + if( pa_IS_VALID_WAVEFORMATEX_GUID(&dataRange->SubFormat) + || memcmp( (void*)&dataRange->SubFormat, (void*)&pa_KSDATAFORMAT_SUBTYPE_PCM, sizeof(GUID) ) == 0 + || memcmp( (void*)&dataRange->SubFormat, (void*)&pa_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, sizeof(GUID) ) == 0 + || ( ( memcmp( (void*)&dataRange->MajorFormat, (void*)&pa_KSDATAFORMAT_TYPE_AUDIO, sizeof(GUID) ) == 0 ) + && ( memcmp( (void*)&dataRange->SubFormat, (void*)&KSDATAFORMAT_SUBTYPE_WILDCARD, sizeof(GUID) ) == 0 ) ) ) + { + KSDATARANGE_AUDIO *dataRangeAudio = (KSDATARANGE_AUDIO*)dataRange; + + /* + printf( ">>> %d %d %d %d %S\n", isInput, dataflow, communication, dataRangeAudio->MaximumChannels, devicePath ); + + if( memcmp((void*)&dataRange->Specifier, (void*)&KSDATAFORMAT_SPECIFIER_WAVEFORMATEX, sizeof(GUID) ) == 0 ) + printf( "\tspecifier: KSDATAFORMAT_SPECIFIER_WAVEFORMATEX\n" ); + else if( memcmp((void*)&dataRange->Specifier, (void*)&KSDATAFORMAT_SPECIFIER_DSOUND, sizeof(GUID) ) == 0 ) + printf( "\tspecifier: KSDATAFORMAT_SPECIFIER_DSOUND\n" ); + else if( memcmp((void*)&dataRange->Specifier, (void*)&KSDATAFORMAT_SPECIFIER_WILDCARD, sizeof(GUID) ) == 0 ) + printf( "\tspecifier: KSDATAFORMAT_SPECIFIER_WILDCARD\n" ); + else + printf( "\tspecifier: ?\n" ); + */ + + /* + We assume that very high values for MaximumChannels are not useful and indicate + that the driver isn't prepared to tell us the real number of channels which it supports. + */ + if( dataRangeAudio->MaximumChannels < 0xFFFFUL && (int)dataRangeAudio->MaximumChannels > result ) + result = (int)dataRangeAudio->MaximumChannels; + } + + dataRange = (KSDATARANGE*)( ((char*)dataRange) + dataRange->FormatSize); + } + + PaUtil_FreeMemory( item ); + } + } + } + + CloseHandle( deviceHandle ); + return result; +} |