// Returns the number of bytes that can be read from the speed alteration
// object
jint Java_org_vinuxproject_sonic_Sonic_availableBytesNative(
JNIEnv *env,
jobject thiz,
jlong sonicID)
{
sonicStream stream = getInst(sonicID)->stream;
LOGV("Reading samples available = %d", sonicSamplesAvailable(stream)*sizeof(short)*sonicGetNumChannels(stream));
return sonicSamplesAvailable(stream)*sizeof(short)*sonicGetNumChannels(stream);
}
// Get bytes representing sped up/slowed down sound and put up to lenBytes
// into ret.
// Returns number of bytes read, or -1 if we run out of memory.
jint Java_org_vinuxproject_sonic_Sonic_receiveBytesNative(
JNIEnv *env,
jobject thiz,
jlong sonicID,
jbyteArray ret,
jint lenBytes)
{
sonicInst inst = getInst(sonicID);
sonicStream stream = inst->stream;
int available = sonicSamplesAvailable(stream)*sizeof(short)*sonicGetNumChannels(stream);
int samplesRead, bytesRead;
LOGV("Reading %d bytes from stream", lenBytes);
if(lenBytes > available) {
lenBytes = available;
}
if(lenBytes > inst->byteBufSize*sizeof(short)) {
inst->byteBufSize = lenBytes*(2/sizeof(short));
inst->byteBuf = (short *)realloc(inst->byteBuf, inst->byteBufSize*sizeof(short));
if(inst->byteBuf == NULL) {
return -1;
}
}
//LOGV("Doing read %d", lenBytes);
samplesRead = sonicReadShortFromStream(stream, inst->byteBuf,
lenBytes/(sizeof(short)*sonicGetNumChannels(stream)));
bytesRead = samplesRead*sizeof(short)*sonicGetNumChannels(stream);
//LOGV("Returning %d", samplesRead);
(*env)->SetByteArrayRegion(env, ret, 0, bytesRead, (jbyte *)inst->byteBuf);
return bytesRead;
}
void rate_controller::on_output()
{
int n=sonicSamplesAvailable(stream);
if(n>0)
{
if(n>samples.size())
samples.resize(n,0);
sonicReadFloatFromStream(stream,&samples[0],n);
output.assign(samples.begin(),samples.begin()+n);
}
}
bool speech_stream::read(speech_stream::buffer_type& buffer,int min_size)
{
if(sonic_stream)
{
if(min_size==0)
flush_input_buffer();
int nsamples=sonicSamplesAvailable(sonic_stream);
if((nsamples==0)||(nsamples<min_size))
return false;
buffer.resize(nsamples,0);
sonicReadShortFromStream(sonic_stream,&buffer[0],nsamples);
}
else
{
if(samples.empty()||(samples.size()<min_size))
return false;
buffer=samples;
samples.clear();
}
return true;
}