SV platform dependency builds

/** @file patest_suggested_vs_streaminfo_latency.c

        @ingroup test_src

        @brief Print suggested vs. PaStreamInfo reported actual latency

        @author Ross Bencina <rossb@audiomulch.com>

        Opens streams with a sequence of suggested latency values 

        from 0 to 2 seconds in .5ms intervals and gathers the resulting actual 

        latency values. Output a csv file and graph suggested vs. actual. Run 

        with framesPerBuffer unspecified, powers of 2 and multiples of 50 and 

        prime number buffer sizes.

*/

/*

 * $Id: patest_sine.c 1368 2008-03-01 00:38:27Z rossb $

 *

 * This program uses the PortAudio Portable Audio Library.

 * For more information see: http://www.portaudio.com/

 * 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.

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <math.h>

#include "portaudio.h"

#define SAMPLE_RATE             (44100)

#define FRAMES_PER_BUFFER       2//(128)

#define NUM_CHANNELS            (2)

#define SUGGESTED_LATENCY_START_SECONDS     (0.0)

#define SUGGESTED_LATENCY_END_SECONDS       (2.0)

#define SUGGESTED_LATENCY_INCREMENT_SECONDS (0.0005) /* half a millisecond increments */

/* dummy callback. does nothing. never gets called */

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

                            unsigned long framesPerBuffer,

                            const PaStreamCallbackTimeInfo* timeInfo,

                            PaStreamCallbackFlags statusFlags,

                            void *userData )

{

    return paContinue;

}

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

static void usage()

{

    int i;

    const PaDeviceInfo *deviceInfo;

    const char *channelString;

    fprintf( stderr, "PortAudio suggested (requested) vs. resulting (reported) stream latency test\n" );

    fprintf( stderr, "Usage: x.exe input-device-index output-device-index sample-rate frames-per-buffer\n" );

    fprintf( stderr, "Use -1 for default device index, or use one of these:\n" );

    for( i=0; i < Pa_GetDeviceCount(); ++i ){

        deviceInfo = Pa_GetDeviceInfo(i);

        if( deviceInfo->maxInputChannels > 0 && deviceInfo->maxOutputChannels > 0 )

            channelString = "full-duplex";

        else if( deviceInfo->maxInputChannels > 0 )

            channelString = "input only";

        else

            channelString = "output only";

        fprintf( stderr, "%d (%s, %s, %s)\n", i, deviceInfo->name, Pa_GetHostApiInfo(deviceInfo->hostApi)->name, channelString );

    }

    Pa_Terminate();

    exit(-1);

}

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

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

{

    PaStreamParameters inputParameters, outputParameters;

    PaStream *stream;

    PaError err;

    PaTime suggestedLatency;

    const PaStreamInfo *streamInfo;

    const PaDeviceInfo *deviceInfo;

    float sampleRate = SAMPLE_RATE;

    int framesPerBuffer = FRAMES_PER_BUFFER;

    err = Pa_Initialize();

    if( err != paNoError ) goto error;

    if( argc > 1 && strcmp(argv[1],"-h") == 0 )

        usage();

    if( argc > 3 ){

        sampleRate = atoi(argv[3]);

    }

    if( argc > 4 ){

        framesPerBuffer = atoi(argv[4]);

    }

    printf("# sample rate=%f, frames per buffer=%d\n", (float)sampleRate, framesPerBuffer );

    inputParameters.device = -1;

    if( argc > 1 )

        inputParameters.device = atoi(argv[1]);

    if( inputParameters.device == -1 ){

        inputParameters.device = Pa_GetDefaultInputDevice();

        if (inputParameters.device == paNoDevice) {

          fprintf(stderr,"Error: No default input device available.\n");

          goto error;

        }

    }else{

        deviceInfo = Pa_GetDeviceInfo(inputParameters.device);

        if( !deviceInfo ){

            fprintf(stderr,"Error: Invalid input device index.\n");

            usage();

        }

        if( deviceInfo->maxInputChannels == 0 ){

            fprintf(stderr,"Error: Specified input device has no input channels (an output only device?).\n");

            usage();

        }

    }

    inputParameters.channelCount = NUM_CHANNELS;

    inputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */

    inputParameters.hostApiSpecificStreamInfo = NULL;

    deviceInfo = Pa_GetDeviceInfo(inputParameters.device);

    printf( "# using input device id %d (%s, %s)\n", inputParameters.device, deviceInfo->name, Pa_GetHostApiInfo(deviceInfo->hostApi)->name );

    outputParameters.device = -1;

    if( argc > 2 )

        outputParameters.device = atoi(argv[2]);

    if( outputParameters.device == -1 ){

        outputParameters.device = Pa_GetDefaultOutputDevice();

        if (outputParameters.device == paNoDevice) {

          fprintf(stderr,"Error: No default output device available.\n");

          goto error;

        }

    }else{

        deviceInfo = Pa_GetDeviceInfo(outputParameters.device);

        if( !deviceInfo ){

            fprintf(stderr,"Error: Invalid output device index.\n");

            usage();

        }

        if( deviceInfo->maxOutputChannels == 0 ){

            fprintf(stderr,"Error: Specified output device has no output channels (an input only device?).\n");

            usage();

        }

    }

    outputParameters.channelCount = NUM_CHANNELS;

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

    outputParameters.hostApiSpecificStreamInfo = NULL;

    deviceInfo = Pa_GetDeviceInfo(outputParameters.device);

    printf( "# using output device id %d (%s, %s)\n", outputParameters.device, deviceInfo->name, Pa_GetHostApiInfo(deviceInfo->hostApi)->name );

    printf( "# suggested latency, half duplex PaStreamInfo::outputLatency, half duplex PaStreamInfo::inputLatency, full duplex PaStreamInfo::outputLatency, full duplex PaStreamInfo::inputLatency\n" );

    suggestedLatency = SUGGESTED_LATENCY_START_SECONDS;

    while( suggestedLatency <= SUGGESTED_LATENCY_END_SECONDS ){

        outputParameters.suggestedLatency = suggestedLatency;

        inputParameters.suggestedLatency = suggestedLatency;

        printf( "%f, ", suggestedLatency );

        /* ------------------------------ output ------------------------------ */

        err = Pa_OpenStream(

                  &stream,

                  NULL, /* no input */

                  &outputParameters,

                  sampleRate,

                  framesPerBuffer,

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

                  patestCallback,

                  0 );

        if( err != paNoError ) goto error;

        streamInfo = Pa_GetStreamInfo( stream );

        printf( "%f,", streamInfo->outputLatency  );

        err = Pa_CloseStream( stream );

        if( err != paNoError ) goto error;

        /* ------------------------------ input ------------------------------ */

        err = Pa_OpenStream(

                  &stream,

                  &inputParameters, 

                  NULL, /* no output */

                  sampleRate,

                  framesPerBuffer,

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

                  patestCallback,

                  0 );

        if( err != paNoError ) goto error;

        streamInfo = Pa_GetStreamInfo( stream );

        printf( "%f,", streamInfo->inputLatency  );

        err = Pa_CloseStream( stream );

        if( err != paNoError ) goto error;

        /* ------------------------------ full duplex ------------------------------ */

        err = Pa_OpenStream(

                  &stream,

                  &inputParameters, 

                  &outputParameters,

                  sampleRate,

                  framesPerBuffer,

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

                  patestCallback,

                  0 );

        if( err != paNoError ) goto error;

        streamInfo = Pa_GetStreamInfo( stream );

        printf( "%f,%f", streamInfo->outputLatency, streamInfo->inputLatency );

        err = Pa_CloseStream( stream );

        if( err != paNoError ) goto error;

        /* ------------------------------------------------------------ */

        printf( "\n" );

        suggestedLatency += SUGGESTED_LATENCY_INCREMENT_SECONDS;

    }

    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;

}