SV platform dependency builds

/*

 * $Id: $

 * Portable Audio I/O Library

 * Windows DirectSound low level buffer parameters test

 *

 * Copyright (c) 2011 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 <stdio.h>

#include <math.h>

#include "portaudio.h"

#include "pa_win_ds.h"

#define NUM_SECONDS         (6)

#define SAMPLE_RATE         (44100)

#define DSOUND_FRAMES_PER_HOST_BUFFER  (256*2) //(440*10)

#define FRAMES_PER_BUFFER   256

#ifndef M_PI

#define M_PI  (3.14159265)

#endif

#define TABLE_SIZE          (2048)

#define CHANNEL_COUNT       (2)

typedef struct

{

    float sine[TABLE_SIZE];

        double phase;

}

paTestData;

/* This routine will be called by the PortAudio engine when audio is needed.

** It may called at interrupt level on some machines so don't do anything

** that could mess up the system like calling malloc() or free().

*/

static int patestCallback( const void *inputBuffer, void *outputBuffer,

                            unsigned long framesPerBuffer,

                            const PaStreamCallbackTimeInfo* timeInfo,

                            PaStreamCallbackFlags statusFlags,

                            void *userData )

{

    paTestData *data = (paTestData*)userData;

    float *out = (float*)outputBuffer;

    unsigned long i,j;

    (void) timeInfo; /* Prevent unused variable warnings. */

    (void) statusFlags;

    (void) inputBuffer;

    for( i=0; i<framesPerBuffer; i++ )

    {

        float x = data->sine[(int)data->phase];

        data->phase += 20;

        if( data->phase >= TABLE_SIZE ){

                        data->phase -= TABLE_SIZE;

                }

                for( j = 0; j < CHANNEL_COUNT; ++j ){

            *out++ = x;

                }

        }

    return paContinue;

}

/*******************************************************************/

int main(int argc, char* argv[])

{

    PaStreamParameters outputParameters;

    PaWinDirectSoundStreamInfo dsoundStreamInfo;

    PaStream *stream;

    PaError err;

    paTestData data;

    int i;

    int deviceIndex;

    printf("PortAudio Test: output a sine blip on each channel. SR = %d, BufSize = %d, Chans = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER, CHANNEL_COUNT);

    err = Pa_Initialize();

    if( err != paNoError ) goto error;

        deviceIndex = Pa_GetHostApiInfo( Pa_HostApiTypeIdToHostApiIndex( paDirectSound ) )->defaultOutputDevice;

        if( argc == 2 ){

                sscanf( argv[1], "%d", &deviceIndex );

        }

        printf( "using device id %d (%s)\n", deviceIndex, Pa_GetDeviceInfo(deviceIndex)->name );

    /* initialise sinusoidal wavetable */

    for( i=0; i<TABLE_SIZE; i++ )

    {

        data.sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );

    }

        data.phase = 0;

    outputParameters.device = deviceIndex;

    outputParameters.channelCount = CHANNEL_COUNT;

    outputParameters.sampleFormat = paFloat32; /* 32 bit floating point processing */

    outputParameters.suggestedLatency = 0; /*Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;*/

    outputParameters.hostApiSpecificStreamInfo = NULL;

    dsoundStreamInfo.size = sizeof(PaWinDirectSoundStreamInfo);

    dsoundStreamInfo.hostApiType = paDirectSound; 

    dsoundStreamInfo.version = 2;

    dsoundStreamInfo.flags = paWinDirectSoundUseLowLevelLatencyParameters;

    dsoundStreamInfo.framesPerBuffer = DSOUND_FRAMES_PER_HOST_BUFFER;

    outputParameters.hostApiSpecificStreamInfo = &dsoundStreamInfo;

        if( Pa_IsFormatSupported( 0, &outputParameters, SAMPLE_RATE ) == paFormatIsSupported  ){

                printf( "Pa_IsFormatSupported reports device will support %d channels.\n", CHANNEL_COUNT );

        }else{

                printf( "Pa_IsFormatSupported reports device will not support %d channels.\n", CHANNEL_COUNT );

        }

    err = Pa_OpenStream(

              &stream,

              NULL, /* no input */

              &outputParameters,

              SAMPLE_RATE,

              FRAMES_PER_BUFFER,

              paClipOff,      /* we won't output out of range samples so don't bother clipping them */

              patestCallback,

              &data );

    if( err != paNoError ) goto error;

    err = Pa_StartStream( stream );

    if( err != paNoError ) goto error;

    printf("Play for %d seconds.\n", NUM_SECONDS );

    Pa_Sleep( NUM_SECONDS * 1000 );

    err = Pa_StopStream( stream );

    if( err != paNoError ) goto error;

    err = Pa_CloseStream( stream );

    if( err != paNoError ) goto error;

    Pa_Terminate();

    printf("Test finished.\n");

    return err;

error:

    Pa_Terminate();

    fprintf( stderr, "An error occured while using the portaudio stream\n" );

    fprintf( stderr, "Error number: %d\n", err );

    fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );

    return err;

}