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https://github.com/servalproject/serval-dna.git
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91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
#ifdef WITH_PORTAUDIO
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#include "serval.h"
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#include <portaudio.h>
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struct private_data {
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int foo;
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};
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struct private_data pd;
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PaStream *stream=NULL;
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/* This routine will be called by the PortAudio engine when audio is needed.
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It may called at interrupt level on some machines so don't do anything
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that could mess up the system like calling malloc() or free().
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*/
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static int paphoneCallback( const void *inputBuffer, void *outputBuffer,
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unsigned long framesPerBuffer,
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const PaStreamCallbackTimeInfo* timeInfo,
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PaStreamCallbackFlags statusFlags,
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void *userData )
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{
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/* Cast data passed through stream to our structure. */
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struct private_data *data = (struct private_data*)userData;
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uint16_t *out = (uint16_t*)outputBuffer;
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uint16_t *in = (uint16_t*)inputBuffer;
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unsigned int i;
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/* Add recorded audio to ring buffer */
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/* Play audio from ring buffer.
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XXX - Special case for DTMF tones.
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DTMF is:
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1209 1336 1477 1633
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697 1 2 3 A
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770 4 5 6 B
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852 7 8 9 C
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941 * 0 # D
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*/
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return 0;
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}
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int paphone_setup()
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{
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PaError err;
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err = Pa_Initialize();
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if( err != paNoError ) goto error;
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/* Open an audio I/O stream. */
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err = Pa_OpenDefaultStream( &stream,
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1, /* one input channel */
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1, /* one output channel */
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paInt16, /* sample format */
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8000,
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8000/40, /* frames per buffer, i.e. the number
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of sample frames that PortAudio will
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request from the callback. Many apps
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may want to use
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paFramesPerBufferUnspecified, which
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tells PortAudio to pick the best,
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possibly changing, buffer size.*/
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paphoneCallback, /* this is your callback function */
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&pd ); /*This is a pointer that will be passed to
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your callback*/
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if( err != paNoError ) goto error;
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err = Pa_StartStream( stream );
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if( err != paNoError ) goto error;
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return 0;
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error:
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return WHYF( "PortAudio error: %s\n", Pa_GetErrorText( err ) );
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}
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int paphone_cleanup()
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{
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PaError err;
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err = Pa_StopStream( stream );
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if( err != paNoError ) goto error;
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err = Pa_CloseStream( stream );
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if( err != paNoError ) goto error;
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error:
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err = Pa_Terminate();
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if( err != paNoError )
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return WHYF( "PortAudio error: %s\n", Pa_GetErrorText( err ) );
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return 0;
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}
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#endif
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