SV platform dependency builds

/*

 * Internal blocking interfaces for PortAudio Apple AUHAL implementation

 *

 * PortAudio Portable Real-Time Audio Library

 * Latest Version at: http://www.portaudio.com

 *

 * Written by Bjorn Roche of XO Audio LLC, from PA skeleton code.

 * Portions copied from code by Dominic Mazzoni (who wrote a HAL implementation)

 *

 * Dominic's code was based on code by Phil Burk, Darren Gibbs,

 * Gord Peters, Stephane Letz, and Greg Pfiel.

 *

 * The following people also deserve acknowledgements:

 *

 * Olivier Tristan for feedback and testing

 * Glenn Zelniker and Z-Systems engineering for sponsoring the Blocking I/O

 * interface.

 * 

 *

 * Based on the Open Source API proposed by Ross Bencina

 * Copyright (c) 1999-2002 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

*/

#ifndef PA_MAC_CORE_BLOCKING_H_

#define PA_MAC_CORE_BLOCKING_H_

#include "pa_ringbuffer.h"

#include "portaudio.h"

#include "pa_mac_core_utilities.h"

/*

 * Number of milliseconds to busy wait while waiting for data in blocking calls.

 */

#define PA_MAC_BLIO_BUSY_WAIT_SLEEP_INTERVAL (5)

/*

 * Define exactly one of these blocking methods

 * PA_MAC_BLIO_MUTEX is not actively maintained.

 */

#define PA_MAC_BLIO_BUSY_WAIT

/*

#define PA_MAC_BLIO_MUTEX

*/

typedef struct {

    PaUtilRingBuffer inputRingBuffer;

    PaUtilRingBuffer outputRingBuffer;

    ring_buffer_size_t ringBufferFrames;

    PaSampleFormat inputSampleFormat;

    size_t inputSampleSizeActual;

    size_t inputSampleSizePow2;

    PaSampleFormat outputSampleFormat;

    size_t outputSampleSizeActual;

    size_t outputSampleSizePow2;

    int inChan;

    int outChan;

    //PaStreamCallbackFlags statusFlags;

    uint32_t statusFlags;

    PaError errors;

    /* Here we handle blocking, using condition variables. */

#ifdef  PA_MAC_BLIO_MUTEX

    volatile bool isInputEmpty;

    pthread_mutex_t inputMutex;

    pthread_cond_t inputCond;

    volatile bool isOutputFull;

    pthread_mutex_t outputMutex;

    pthread_cond_t outputCond;

#endif

}

PaMacBlio;

/*

 * These functions operate on condition and related variables.

 */

PaError initializeBlioRingBuffers(

                                       PaMacBlio *blio,

                                       PaSampleFormat inputSampleFormat,

                                       PaSampleFormat outputSampleFormat,

                                       long ringBufferSizeInFrames,

                                       int inChan,

                                       int outChan );

PaError destroyBlioRingBuffers( PaMacBlio *blio );

PaError resetBlioRingBuffers( PaMacBlio *blio );

int BlioCallback(

        const void *input, void *output,

        unsigned long frameCount,

        const PaStreamCallbackTimeInfo* timeInfo,

        PaStreamCallbackFlags statusFlags,

        void *userData );

PaError waitUntilBlioWriteBufferIsEmpty( PaMacBlio *blio, double sampleRate,

                                        size_t framesPerBuffer );

#endif /*PA_MAC_CORE_BLOCKING_H_*/