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- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include "portaudio.h"
- /* #define SAMPLE_RATE (17932) // Test failure to open with this value. */
- #define SAMPLE_RATE (44100)
- #define FRAMES_PER_BUFFER (512)
- #define NUM_SECONDS (3)
- /* #define DITHER_FLAG (paDitherOff) */
- #define DITHER_FLAG (0)
- /* Select sample format. */
- #if 1
- #define PA_SAMPLE_TYPE paFloat32
- #define SAMPLE_SIZE (4)
- #define SAMPLE_SILENCE (0.0f)
- #define PRINTF_S_FORMAT "%.8f"
- #elif 0
- #define PA_SAMPLE_TYPE paInt16
- #define SAMPLE_SIZE (2)
- #define SAMPLE_SILENCE (0)
- #define PRINTF_S_FORMAT "%d"
- #elif 0
- #define PA_SAMPLE_TYPE paInt24
- #define SAMPLE_SIZE (3)
- #define SAMPLE_SILENCE (0)
- #define PRINTF_S_FORMAT "%d"
- #elif 0
- #define PA_SAMPLE_TYPE paInt8
- #define SAMPLE_SIZE (1)
- #define SAMPLE_SILENCE (0)
- #define PRINTF_S_FORMAT "%d"
- #else
- #define PA_SAMPLE_TYPE paUInt8
- #define SAMPLE_SIZE (1)
- #define SAMPLE_SILENCE (128)
- #define PRINTF_S_FORMAT "%d"
- #endif
- /*******************************************************************/
- int main(void)
- {
- PaStreamParameters inputParameters, outputParameters;
- PaStream *stream = NULL;
- PaError err;
- const PaDeviceInfo* inputInfo;
- const PaDeviceInfo* outputInfo;
- char *sampleBlock = NULL;
- int i;
- int numBytes;
- int numChannels;
- printf("patest_read_write_wire.c\n"); fflush(stdout);
- printf("sizeof(int) = %lu\n", sizeof(int)); fflush(stdout);
- printf("sizeof(long) = %lu\n", sizeof(long)); fflush(stdout);
- err = Pa_Initialize();
- if( err != paNoError ) goto error2;
- inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
- printf( "Input device # %d.\n", inputParameters.device );
- inputInfo = Pa_GetDeviceInfo( inputParameters.device );
- printf( " Name: %s\n", inputInfo->name );
- printf( " LL: %g s\n", inputInfo->defaultLowInputLatency );
- printf( " HL: %g s\n", inputInfo->defaultHighInputLatency );
- outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
- printf( "Output device # %d.\n", outputParameters.device );
- outputInfo = Pa_GetDeviceInfo( outputParameters.device );
- printf( " Name: %s\n", outputInfo->name );
- printf( " LL: %g s\n", outputInfo->defaultLowOutputLatency );
- printf( " HL: %g s\n", outputInfo->defaultHighOutputLatency );
- numChannels = inputInfo->maxInputChannels < outputInfo->maxOutputChannels
- ? inputInfo->maxInputChannels : outputInfo->maxOutputChannels;
- printf( "Num channels = %d.\n", numChannels );
- inputParameters.channelCount = numChannels;
- inputParameters.sampleFormat = PA_SAMPLE_TYPE;
- inputParameters.suggestedLatency = inputInfo->defaultHighInputLatency ;
- inputParameters.hostApiSpecificStreamInfo = NULL;
- outputParameters.channelCount = numChannels;
- outputParameters.sampleFormat = PA_SAMPLE_TYPE;
- outputParameters.suggestedLatency = outputInfo->defaultHighOutputLatency;
- outputParameters.hostApiSpecificStreamInfo = NULL;
- /* -- setup -- */
- err = Pa_OpenStream(
- &stream,
- &inputParameters,
- &outputParameters,
- SAMPLE_RATE,
- FRAMES_PER_BUFFER,
- paClipOff, /* we won't output out of range samples so don't bother clipping them */
- NULL, /* no callback, use blocking API */
- NULL ); /* no callback, so no callback userData */
- if( err != paNoError ) goto error2;
- numBytes = FRAMES_PER_BUFFER * numChannels * SAMPLE_SIZE ;
- sampleBlock = (char *) malloc( numBytes );
- if( sampleBlock == NULL )
- {
- printf("Could not allocate record array.\n");
- goto error1;
- }
- memset( sampleBlock, SAMPLE_SILENCE, numBytes );
- err = Pa_StartStream( stream );
- if( err != paNoError ) goto error1;
- printf("Wire on. Will run %d seconds.\n", NUM_SECONDS); fflush(stdout);
- for( i=0; i<(NUM_SECONDS*SAMPLE_RATE)/FRAMES_PER_BUFFER; ++i )
- {
- printf("HAAAA\n");
- // You may get underruns or overruns if the output is not primed by PortAudio.
- err = Pa_WriteStream( stream, sampleBlock, FRAMES_PER_BUFFER );
- if( err ) goto xrun;
- err = Pa_ReadStream( stream, sampleBlock, FRAMES_PER_BUFFER );
- if( err ) goto xrun;
- }
- printf("Wire off.\n"); fflush(stdout);
- err = Pa_StopStream( stream );
- if( err != paNoError ) goto error1;
- free( sampleBlock );
- Pa_Terminate();
- return 0;
- xrun:
- printf("err = %d\n", err); fflush(stdout);
- if( stream ) {
- Pa_AbortStream( stream );
- Pa_CloseStream( stream );
- }
- free( sampleBlock );
- Pa_Terminate();
- if( err & paInputOverflow )
- fprintf( stderr, "Input Overflow.\n" );
- if( err & paOutputUnderflow )
- fprintf( stderr, "Output Underflow.\n" );
- return -2;
- error1:
- free( sampleBlock );
- error2:
- if( stream ) {
- Pa_AbortStream( stream );
- Pa_CloseStream( stream );
- }
- 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 -1;
- }
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