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#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <time.h>
#include <fusionsound.h>
static void
feed_stream (IFusionSoundStream *stream)
{
DFBResult ret;
int i;
__s16 buf[16384];
/* Generate woops ;) */
for (i=0; i<16384; i++)
buf[i] = (__s16)( sin(i*i/(16384.0*16384.0)*M_PI*200) * 10000 );
/* Write eight times (~3 seconds of playback). */
for (i=0; i<8; i++) {
/*
* Wait for a larger chunk of free space. Avoids a blocking write
* with very small partially writes each time there's new space.
*
* This wait is for demonstrational purpose, in practice blocking
* writes are no overhead and always keeping the buffer at the
* highest fill level is more safe.
*/
ret = stream->Wait (stream, 16384);
if (ret) {
DirectFBError ("IFusionSoundStream::Write", ret);
return;
}
/* This write won't block anymore. */
ret = stream->Write (stream, buf, 16384);
if (ret) {
DirectFBError ("IFusionSoundStream::Write", ret);
return;
}
}
}
int
main (int argc, char *argv[])
{
DFBResult ret;
IFusionSound *sound;
IFusionSoundStream *stream;
FSStreamDescription desc;
ret = FusionSoundInit (&argc, &argv);
if (ret)
DirectFBErrorFatal ("FusionSoundInit", ret);
/* Retrieve the main sound interface. */
ret = FusionSoundCreate (&sound);
if (ret)
DirectFBErrorFatal ("FusionSoundCreate", ret);
/* Fill stream description (using defaults of 44kHz and 16bit). */
desc.flags = FSSDF_BUFFERSIZE | FSSDF_CHANNELS;
desc.buffersize = 32768;
desc.channels = 1;
/* Create the sound stream and feed it. */
ret = sound->CreateStream (sound, &desc, &stream);
if (ret) {
DirectFBError ("IFusionSound::CreateStream", ret);
}
else {
/* Fill the ring buffer with our generated data. */
feed_stream (stream);
/* Wait for end of stream (ring buffer holds ~3/4 sec). */
stream->Wait (stream, 0);
stream->Release (stream);
}
sound->Release (sound);
return 0;
}
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