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/*
* Portable Audio I/O Library
* Java Binding for PortAudio
*
* Based on the Open Source API proposed by Ross Bencina
* Copyright (c) 2008 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.
*/
/** @file
@ingroup bindings_java
@brief Java wrapper for the PortAudio API.
*/
package com.portaudio;
/**
* Java methods that call PortAudio via JNI. This is a portable audio I/O
* library that can be used as an alternative to JavaSound.
*
* Please see the PortAudio documentation for a full explanation.
*
* http://portaudio.com/docs/
* http://portaudio.com/docs/v19-doxydocs/portaudio_8h.html
*
* This Java binding does not support audio callbacks because an audio callback
* should never block. Calling into a Java virtual machine might block for
* garbage collection or synchronization. So only the blocking read/write mode
* is supported.
*
* @see BlockingStream
* @see DeviceInfo
* @see HostApiInfo
* @see StreamInfo
* @see StreamParameters
*
* @author Phil Burk
*
*/
public class PortAudio
{
public final static int FLAG_CLIP_OFF = (1 << 0);
public final static int FLAG_DITHER_OFF = (1 << 1);
/** Sample Formats */
public final static int FORMAT_FLOAT_32 = (1 << 0);
public final static int FORMAT_INT_32 = (1 << 1); // not supported
public final static int FORMAT_INT_24 = (1 << 2); // not supported
public final static int FORMAT_INT_16 = (1 << 3);
public final static int FORMAT_INT_8 = (1 << 4); // not supported
public final static int FORMAT_UINT_8 = (1 << 5); // not supported
/** These HOST_API_TYPES will not change in the future. */
public final static int HOST_API_TYPE_DEV = 0;
public final static int HOST_API_TYPE_DIRECTSOUND = 1;
public final static int HOST_API_TYPE_MME = 2;
public final static int HOST_API_TYPE_ASIO = 3;
/** Apple Sound Manager. Obsolete. */
public final static int HOST_API_TYPE_SOUNDMANAGER = 4;
public final static int HOST_API_TYPE_COREAUDIO = 5;
public final static int HOST_API_TYPE_OSS = 7;
public final static int HOST_API_TYPE_ALSA = 8;
public final static int HOST_API_TYPE_AL = 9;
public final static int HOST_API_TYPE_BEOS = 10;
public final static int HOST_API_TYPE_WDMKS = 11;
public final static int HOST_API_TYPE_JACK = 12;
public final static int HOST_API_TYPE_WASAPI = 13;
public final static int HOST_API_TYPE_AUDIOSCIENCE = 14;
public final static int HOST_API_TYPE_COUNT = 15;
static
{
String os = System.getProperty( "os.name" ).toLowerCase();
// On Windows we have separate libraries for 32 and 64-bit JVMs.
if( os.indexOf( "win" ) >= 0 )
{
if( System.getProperty( "os.arch" ).contains( "64" ) )
{
System.loadLibrary( "jportaudio_x64" );
}
else
{
System.loadLibrary( "jportaudio_x86" );
}
}
else
{
System.loadLibrary( "jportaudio" );
}
System.out.println( "---- JPortAudio version " + getVersion() + ", "
+ getVersionText() );
}
/**
* @return the release number of the currently running PortAudio build, eg
* 1900.
*/
public native static int getVersion();
/**
* @return a textual description of the current PortAudio build, eg
* "PortAudio V19-devel 13 October 2002".
*/
public native static String getVersionText();
/**
* Library initialization function - call this before using PortAudio. This
* function initializes internal data structures and prepares underlying
* host APIs for use. With the exception of getVersion(), getVersionText(),
* and getErrorText(), this function MUST be called before using any other
* PortAudio API functions.
*/
public native static void initialize();
/**
* Library termination function - call this when finished using PortAudio.
* This function deallocates all resources allocated by PortAudio since it
* was initialized by a call to initialize(). In cases where Pa_Initialise()
* has been called multiple times, each call must be matched with a
* corresponding call to terminate(). The final matching call to terminate()
* will automatically close any PortAudio streams that are still open.
*/
public native static void terminate();
/**
* @return the number of available devices. The number of available devices
* may be zero.
*/
public native static int getDeviceCount();
private native static void getDeviceInfo( int index, DeviceInfo deviceInfo );
/**
* @param index
* A valid device index in the range 0 to (getDeviceCount()-1)
* @return An DeviceInfo structure.
* @throws RuntimeException
* if the device parameter is out of range.
*/
public static DeviceInfo getDeviceInfo( int index )
{
DeviceInfo deviceInfo = new DeviceInfo();
getDeviceInfo( index, deviceInfo );
return deviceInfo;
}
/**
* @return the number of available host APIs.
*/
public native static int getHostApiCount();
private native static void getHostApiInfo( int index,
HostApiInfo hostApiInfo );
/**
* @param index
* @return information about the Host API
*/
public static HostApiInfo getHostApiInfo( int index )
{
HostApiInfo hostApiInfo = new HostApiInfo();
getHostApiInfo( index, hostApiInfo );
return hostApiInfo;
}
/**
* @param hostApiType
* A unique host API identifier, for example
* HOST_API_TYPE_COREAUDIO.
* @return a runtime host API index
*/
public native static int hostApiTypeIdToHostApiIndex( int hostApiType );
/**
* @param hostApiIndex
* A valid host API index ranging from 0 to (getHostApiCount()-1)
* @param apiDeviceIndex
* A valid per-host device index in the range 0 to
* (getHostApiInfo(hostApi).deviceCount-1)
* @return standard PortAudio device index
*/
public native static int hostApiDeviceIndexToDeviceIndex( int hostApiIndex,
int apiDeviceIndex );
public native static int getDefaultInputDevice();
public native static int getDefaultOutputDevice();
public native static int getDefaultHostApi();
/**
* @param inputStreamParameters
* input description, may be null
* @param outputStreamParameters
* output description, may be null
* @param sampleRate
* typically 44100 or 48000, or maybe 22050, 16000, 8000, 96000
* @return 0 if supported or a negative error
*/
public native static int isFormatSupported(
StreamParameters inputStreamParameters,
StreamParameters outputStreamParameters, int sampleRate );
private native static void openStream( BlockingStream blockingStream,
StreamParameters inputStreamParameters,
StreamParameters outputStreamParameters, int sampleRate,
int framesPerBuffer, int flags );
/**
*
* @param inputStreamParameters
* input description, may be null
* @param outputStreamParameters
* output description, may be null
* @param sampleRate
* typically 44100 or 48000, or maybe 22050, 16000, 8000, 96000
* @param framesPerBuffer
* @param flags
* @return
*/
public static BlockingStream openStream(
StreamParameters inputStreamParameters,
StreamParameters outputStreamParameters, int sampleRate,
int framesPerBuffer, int flags )
{
BlockingStream blockingStream = new BlockingStream();
openStream( blockingStream, inputStreamParameters,
outputStreamParameters, sampleRate, framesPerBuffer, flags );
return blockingStream;
}
}
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