pd/portaudio/include pa_asio.h, NONE, 1.1 pa_jack.h, NONE, 1.1 pa_linux_alsa.h, NONE, 1.1 pa_mac_core.h, NONE, 1.1 pa_win_wmme.h, NONE, 1.1 portaudio.h, NONE, 1.1 - Pd-cvs

19 Aug 2007


      Update of /cvsroot/pure-data/pd/portaudio/include
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv19525/portaudio/include
Added Files:
    pa_asio.h pa_jack.h pa_linux_alsa.h pa_mac_core.h 
    pa_win_wmme.h portaudio.h 
Log Message:
CVS upload mistakes
--- NEW FILE: portaudio.h ---
#ifndef PORTAUDIO_H
#define PORTAUDIO_H
/*
 * $Id: portaudio.h,v 1.1 2007/08/18 23:49:33 millerpuckette Exp $
 * PortAudio Portable Real-Time Audio Library
 * PortAudio API Header File
 * Latest version available at: http://www.portaudio.com/
 *
 * Copyright (c) 1999-2002 Ross Bencina and 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:
 *
[...1095 lines suppressed...]
 or paSampleFormatNotSupported if the format is not supported.
*/
PaError Pa_GetSampleSize( PaSampleFormat format );
/** Put the caller to sleep for at least 'msec' milliseconds. This function is
 provided only as a convenience for authors of portable code (such as the tests
 and examples in the PortAudio distribution.)
The function may sleep longer than requested so don't rely on this for accurate
 musical timing.
*/
void Pa_Sleep( long msec );
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PORTAUDIO_H */
--- NEW FILE: pa_win_wmme.h ---
#ifndef PA_WIN_WMME_H
#define PA_WIN_WMME_H
/*
 * $Id: pa_win_wmme.h,v 1.1 2007/08/18 23:49:33 millerpuckette Exp $
 * PortAudio Portable Real-Time Audio Library
 * MME specific extensions
 *
 * Copyright (c) 1999-2000 Ross Bencina and 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
 @brief WMME-specific PortAudio API extension header file.
*/
#include "portaudio.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#define paWinMmeUseLowLevelLatencyParameters            (0x01)
#define paWinMmeUseMultipleDevices                      (0x02)  /* use mme specific multiple device feature */
/* By default, the mme implementation drops the processing thread's priority
    to THREAD_PRIORITY_NORMAL and sleeps the thread if the CPU load exceeds 100%
    This flag disables any priority throttling. The processing thread will always
    run at THREAD_PRIORITY_TIME_CRITICAL.
*/
#define paWinMmeDontThrottleOverloadedProcessingThread  (0x08)
typedef struct PaWinMmeDeviceAndChannelCount{
    PaDeviceIndex device;
    int channelCount;
}PaWinMmeDeviceAndChannelCount;
typedef struct PaWinMmeStreamInfo{
    unsigned long size;             /**< sizeof(PaWinMmeStreamInfo) */
    PaHostApiTypeId hostApiType;    /**< paMME */
    unsigned long version;          /**< 1 */
unsigned long flags;
/* low-level latency setting support
        These settings control the number and size of host buffers in order
        to set latency. They will be used instead of the generic parameters
        to Pa_OpenStream() if flags contains the PaWinMmeUseLowLevelLatencyParameters
        flag.
If PaWinMmeStreamInfo structures with PaWinMmeUseLowLevelLatencyParameters
        are supplied for both input and output in a full duplex stream, then the
        input and output framesPerBuffer must be the same, or the larger of the
        two must be a multiple of the smaller, otherwise a
        paIncompatibleHostApiSpecificStreamInfo error will be returned from
        Pa_OpenStream().
    */
    unsigned long framesPerBuffer;
    unsigned long bufferCount;  /* formerly numBuffers */
/* multiple devices per direction support
        If flags contains the PaWinMmeUseMultipleDevices flag,
        this functionality will be used, otherwise the device parameter to
        Pa_OpenStream() will be used instead.
        If devices are specified here, the corresponding device parameter
        to Pa_OpenStream() should be set to paUseHostApiSpecificDeviceSpecification,
        otherwise an paInvalidDevice error will result.
        The total number of channels accross all specified devices
        must agree with the corresponding channelCount parameter to
        Pa_OpenStream() otherwise a paInvalidChannelCount error will result.
    */
    PaWinMmeDeviceAndChannelCount *devices;
    unsigned long deviceCount;
}PaWinMmeStreamInfo;
/** Retrieve the number of wave in handles used by a PortAudio WinMME stream.
 Returns zero if the stream is output only.
@return A non-negative value indicating the number of wave in handles
 or, a PaErrorCode (which are always negative) if PortAudio is not initialized
 or an error is encountered.
@see PaWinMME_GetStreamInputHandle
*/
int PaWinMME_GetStreamInputHandleCount( PaStream* stream );
/** Retrieve a wave in handle used by a PortAudio WinMME stream.
@param stream The stream to query.
 @param handleIndex The zero based index of the wave in handle to retrieve. This
    should be in the range [0, PaWinMME_GetStreamInputHandleCount(stream)-1].
@return A valid wave in handle, or NULL if an error occurred.
@see PaWinMME_GetStreamInputHandle
*/
HWAVEIN PaWinMME_GetStreamInputHandle( PaStream* stream, int handleIndex );
/** Retrieve the number of wave out handles used by a PortAudio WinMME stream.
 Returns zero if the stream is input only.
@return A non-negative value indicating the number of wave out handles
 or, a PaErrorCode (which are always negative) if PortAudio is not initialized
 or an error is encountered.
@see PaWinMME_GetStreamOutputHandle
*/
int PaWinMME_GetStreamOutputHandleCount( PaStream* stream );
/** Retrieve a wave out handle used by a PortAudio WinMME stream.
@param stream The stream to query.
 @param handleIndex The zero based index of the wave out handle to retrieve.
    This should be in the range [0, PaWinMME_GetStreamOutputHandleCount(stream)-1].
@return A valid wave out handle, or NULL if an error occurred.
@see PaWinMME_GetStreamOutputHandleCount
*/
HWAVEOUT PaWinMME_GetStreamOutputHandle( PaStream* stream, int handleIndex );
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_WIN_WMME_H */
--- NEW FILE: pa_asio.h ---
#ifndef PA_ASIO_H
#define PA_ASIO_H
/*
 * $Id: pa_asio.h,v 1.1 2007/08/18 23:49:33 millerpuckette Exp $
 * PortAudio Portable Real-Time Audio Library
 * ASIO specific extensions
 *
 * Copyright (c) 1999-2000 Ross Bencina and 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
 @brief ASIO-specific PortAudio API extension header file.
*/
#include "portaudio.h"
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/** Retrieve legal latency settings for the specificed device, in samples.
@param device The global index of the device about which the query is being made.
 @param minLatency A pointer to the location which will recieve the minimum latency value.
 @param maxLatency A pointer to the location which will recieve the maximum latency value.
 @param preferredLatency A pointer to the location which will recieve the preferred latency value.
 @param granularity A pointer to the location which will recieve the granularity. This value 
 determines which values between minLatency and maxLatency are available. ie the step size,
 if granularity is -1 then available latency settings are powers of two.
@see ASIOGetBufferSize in the ASIO SDK.
@todo This function should have a better name, any suggestions?
*/
PaError PaAsio_GetAvailableLatencyValues( PaDeviceIndex device,
    	long *minLatency, long *maxLatency, long *preferredLatency, long *granularity );
/** Display the ASIO control panel for the specified device.
@param device The global index of the device whose control panel is to be displayed.
  @param systemSpecific On Windows, the calling application's main window handle,
  on Macintosh this value should be zero.
*/
PaError PaAsio_ShowControlPanel( PaDeviceIndex device, void* systemSpecific );
/** Retrieve a pointer to a string containing the name of the specified
 input channel. The string is valid until Pa_Terminate is called.
The string will be no longer than 32 characters including the null terminator.
*/
PaError PaAsio_GetInputChannelName( PaDeviceIndex device, int channelIndex,
        const char** channelName );
/** Retrieve a pointer to a string containing the name of the specified
 input channel. The string is valid until Pa_Terminate is called.
The string will be no longer than 32 characters including the null terminator.
*/
PaError PaAsio_GetOutputChannelName( PaDeviceIndex device, int channelIndex,
        const char** channelName );
#define paAsioUseChannelSelectors      (0x01)
typedef struct PaAsioStreamInfo{
    unsigned long size;             /**< sizeof(PaAsioStreamInfo) */
    PaHostApiTypeId hostApiType;    /**< paASIO */
    unsigned long version;          /**< 1 */
unsigned long flags;
/* Support for opening only specific channels of an ASIO device.
        If the paAsioUseChannelSelectors flag is set, channelSelectors is a
        pointer to an array of integers specifying the device channels to use.
        When used, the length of the channelSelectors array must match the
        corresponding channelCount parameter to Pa_OpenStream() otherwise a
        crash may result.
        The values in the selectors array must specify channels within the
        range of supported channels for the device or paInvalidChannelCount will
        result.
    */
    int *channelSelectors;
}PaAsioStreamInfo;
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_ASIO_H */
--- NEW FILE: pa_jack.h ---
#ifndef PA_JACK_H
#define PA_JACK_H
/*
 * $Id:
 * PortAudio Portable Real-Time Audio Library
 * JACK-specific extensions
 *
 * Copyright (c) 1999-2000 Ross Bencina and 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
 * JACK-specific PortAudio API extension header file.
 */
#include "portaudio.h"
#ifdef __cplusplus
extern "C" {
#endif
/** Set the JACK client name.
 *
 * During Pa_Initialize, When PA JACK connects as a client of the JACK server, it requests a certain
 * name, which is for instance prepended to port names. By default this name is "PortAudio". The
 * JACK server may append a suffix to the client name, in order to avoid clashes among clients that
 * try to connect with the same name (e.g., different PA JACK clients).
 *
 * This function must be called before Pa_Initialize, otherwise it won't have any effect. Note that
 * the string is not copied, but instead referenced directly, so it must not be freed for as long as
 * PA might need it.
 * @sa PaJack_GetClientName
 */
PaError PaJack_SetClientName( const char* name );
/** Get the JACK client name used by PA JACK.
 *
 * The caller is responsible for freeing the returned pointer.
 */
PaError PaJack_GetClientName(const char** clientName);
#ifdef __cplusplus
}
#endif
#endif
--- NEW FILE: pa_mac_core.h ---
#ifndef PA_MAC_CORE_H
#define PA_MAC_CORE_H
/*
 * PortAudio Portable Real-Time Audio Library
 * Macintosh Core Audio specific extensions
 * portaudio.h should be included before this file.
 *
 * Copyright (c) 2005-2006 Bjorn Roche
 *
 * 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 <AudioUnit/AudioUnit.h>
//#include <AudioToolbox/AudioToolbox.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
 * A pointer to a paMacCoreStreamInfo may be passed as
 * the hostApiSpecificStreamInfo in the PaStreamParameters struct
 * when opening a stream or querying the format. Use NULL, for the
 * defaults. Note that for duplex streams, flags for input and output
 * should be the same or behaviour is undefined.
 */
typedef struct
{
    unsigned long size;           /**size of whole structure including this header */
    PaHostApiTypeId hostApiType;  /**host API for which this data is intended */
    unsigned long version;        /**structure version */
    unsigned long flags;          /* flags to modify behaviour */
    SInt32 const * channelMap;    /* Channel map for HAL channel mapping , if not needed, use NULL;*/ 
    unsigned long channelMapSize; /* Channel map size for HAL channel mapping , if not needed, use 0;*/ 
} PaMacCoreStreamInfo;
/*
 * Functions
 */
/* Use this function to initialize a paMacCoreStreamInfo struct
 * using the requested flags. Note that channel mapping is turned
 * off after a call to this function.
 * @param data The datastructure to initialize
 * @param flags The flags to initialize the datastructure with.
*/
void PaMacCore_SetupStreamInfo( PaMacCoreStreamInfo *data, unsigned long flags );
/* call this after pa_SetupMacCoreStreamInfo to use channel mapping as described in notes.txt.
 * @param data The stream info structure to assign a channel mapping to
 * @param channelMap The channel map array, as described in notes.txt. This array pointer will be used directly (ie the underlying data will not be copied), so the caller should not free the array until after the stream has been opened.
 * @param channelMapSize The size of the channel map array.
 */
void PaMacCore_SetupChannelMap( PaMacCoreStreamInfo *data, const SInt32 * const channelMap, unsigned long channelMapSize );
/*
 * Retrieve the AudioDeviceID of the input device assigned to an open stream
 *
 * @param s The stream to query.
 *
 * @return A valid AudioDeviceID, or NULL if an error occurred.
 */
AudioDeviceID PaMacCore_GetStreamInputDevice( PaStream* s );
/*
 * Retrieve the AudioDeviceID of the output device assigned to an open stream
 *
 * @param s The stream to query.
 *
 * @return A valid AudioDeviceID, or NULL if an error occurred.
 */
AudioDeviceID PaMacCore_GetStreamOutputDevice( PaStream* s );
/*
 * Returns a statically allocated string with the device's name
 * for the given channel. NULL will be returned on failure.
 *
 * This function's implemenation is not complete!
 *
 * @param device The PortAudio device index.
 * @param channel The channel number who's name is requested.
 * @return a statically allocated string with the name of the device.
 *         Because this string is statically allocated, it must be
 *         coppied if it is to be saved and used by the user after
 *         another call to this function.
 *
 */
const char *PaMacCore_GetChannelName( int device, int channelIndex, bool input );
/*
 * Flags
 */
/*
 * The following flags alter the behaviour of PA on the mac platform.
 * they can be ORed together. These should work both for opening and
 * checking a device.
 */
/* Allows PortAudio to change things like the device's frame size,
 * which allows for much lower latency, but might disrupt the device
 * if other programs are using it, even when you are just Querying
 * the device. */
#define paMacCoreChangeDeviceParameters (0x01)
/* In combination with the above flag,
 * causes the stream opening to fail, unless the exact sample rates
 * are supported by the device. */
#define paMacCoreFailIfConversionRequired (0x02)
/* These flags set the SR conversion quality, if required. The wierd ordering
 * allows Maximum Quality to be the default.*/
#define paMacCoreConversionQualityMin    (0x0100)
#define paMacCoreConversionQualityMedium (0x0200)
#define paMacCoreConversionQualityLow    (0x0300)
#define paMacCoreConversionQualityHigh   (0x0400)
#define paMacCoreConversionQualityMax    (0x0000)
/*
 * Here are some "preset" combinations of flags (above) to get to some
 * common configurations. THIS IS OVERKILL, but if more flags are added
 * it won't be.
 */
/*This is the default setting: do as much sample rate conversion as possible
 * and as little mucking with the device as possible. */
#define paMacCorePlayNice                    (0x00)
/*This setting is tuned for pro audio apps. It allows SR conversion on input
  and output, but it tries to set the appropriate SR on the device.*/
#define paMacCorePro                         (0x01)
/*This is a setting to minimize CPU usage and still play nice.*/
#define paMacCoreMinimizeCPUButPlayNice      (0x0100)
/*This is a setting to minimize CPU usage, even if that means interrupting the device. */
#define paMacCoreMinimizeCPU                 (0x0101)
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* PA_MAC_CORE_H */
--- NEW FILE: pa_linux_alsa.h ---
#ifndef PA_LINUX_ALSA_H
#define PA_LINUX_ALSA_H
/*
 * $Id: pa_linux_alsa.h,v 1.1 2007/08/18 23:49:33 millerpuckette Exp $
 * PortAudio Portable Real-Time Audio Library
 * ALSA-specific extensions
 *
 * Copyright (c) 1999-2000 Ross Bencina and 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
 * ALSA-specific PortAudio API extension header file.
 */
#include "portaudio.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct PaAlsaStreamInfo
{
    unsigned long size;
    PaHostApiTypeId hostApiType;
    unsigned long version;
const char *deviceString;
}
PaAlsaStreamInfo;
/** Initialize host API specific structure, call this before setting relevant attributes. */
void PaAlsa_InitializeStreamInfo( PaAlsaStreamInfo *info );
/** Instruct whether to enable real-time priority when starting the audio thread.
 *
 * If this is turned on by the stream is started, the audio callback thread will be created
 * with the FIFO scheduling policy, which is suitable for realtime operation.
 **/
void PaAlsa_EnableRealtimeScheduling( PaStream *s, int enable );
#if 0
void PaAlsa_EnableWatchdog( PaStream *s, int enable );
#endif
/** Get the ALSA-lib card index of this stream's input device. */
PaError PaAlsa_GetStreamInputCard( PaStream *s, int *card );
/** Get the ALSA-lib card index of this stream's output device. */
PaError PaAlsa_GetStreamOutputCard( PaStream *s, int *card );
/** Set the number of periods (buffer fragments) to configure devices with.
 *
 * By default the number of periods is 4, this is the lowest number of periods that works well on
 * the author's soundcard.
 * @param numPeriods The number of periods.
 */
PaError PaAlsa_SetNumPeriods( int numPeriods );
#ifdef __cplusplus
}
#endif
#endif