void rate_controller::do_initialize()
{
stream=sonicCreateStream(sample_rate,1);
if(stream==0)
throw std::bad_alloc();
sonicSetSpeed(stream,rate);
}
// Change the speed.
void Java_org_vinuxproject_sonic_Sonic_setSpeedNative(
JNIEnv *env,
jobject thiz,
jlong sonicID,
jfloat newSpeed)
{
sonicStream stream = getInst(sonicID)->stream;
LOGV("Set speed to %f", newSpeed);
sonicSetSpeed(stream, newSpeed);
}
status_t TimestretchBufferProvider::setPlaybackRate(const AudioPlaybackRate &playbackRate)
{
mPlaybackRate = playbackRate;
mFallbackFailErrorShown = false;
sonicSetSpeed(mSonicStream, mPlaybackRate.mSpeed);
//TODO: pitch is ignored for now
//TODO: optimize: if parameters are the same, don't do any extra computation.
mAudioPlaybackRateValid = isAudioPlaybackRateValid(mPlaybackRate);
return OK;
}
speech_stream::speech_stream(int sample_rate,double speed):
buffer_size(0.1*sample_rate),
start_offset(0),
offset(0),
sonic_stream(0)
{
if(speed!=1)
{
sonic_stream=sonicCreateStream(sample_rate,1);
if(!sonic_stream)
throw std::bad_alloc();
sonicSetSpeed(sonic_stream,speed);
}
}
/* Run sonic. */
static void runSonic(
waveFile inFile,
waveFile outFile,
float speed,
float pitch,
float rate,
float volume,
int emulateChordPitch,
int quality,
int sampleRate,
int numChannels)
{
sonicStream stream = sonicCreateStream(sampleRate, numChannels);
short inBuffer[BUFFER_SIZE], outBuffer[BUFFER_SIZE];
int samplesRead, samplesWritten;
sonicSetSpeed(stream, speed);
sonicSetPitch(stream, pitch);
sonicSetRate(stream, rate);
sonicSetVolume(stream, volume);
sonicSetChordPitch(stream, emulateChordPitch);
sonicSetQuality(stream, quality);
do {
samplesRead = readFromWaveFile(inFile, inBuffer, BUFFER_SIZE/numChannels);
if(samplesRead == 0) {
sonicFlushStream(stream);
} else {
sonicWriteShortToStream(stream, inBuffer, samplesRead);
}
do {
samplesWritten = sonicReadShortFromStream(stream, outBuffer,
BUFFER_SIZE/numChannels);
if(samplesWritten > 0) {
writeToWaveFile(outFile, outBuffer, samplesWritten);
}
} while(samplesWritten > 0);
} while(samplesRead > 0);
sonicDestroyStream(stream);
}
