//////////////////////////////////////////
///\brief
///Append another buffer to this one
//////////////////////////////////////////
bool Buffer::Append(BufferPtr appendBuffer){
if(this->SampleRate()==appendBuffer->SampleRate() && this->Channels()==appendBuffer->Channels()){
long newBufferSize = (this->Samples()+appendBuffer->Samples())*this->channels;
if(newBufferSize>this->internalBufferSize){
// Internal buffer too small. We need to make a new buffer
// Create a new buffer
float *newBuffer = new float[newBufferSize];
CopyFloat(newBuffer,this->buffer,this->sampleSize*this->channels);
float *dst = &newBuffer[this->sampleSize*this->channels];
float *src = appendBuffer->BufferPointer();
long si = appendBuffer->Samples()*this->channels;
CopyFloat(dst,src,si);
if(this->buffer){
// Delete old buffer
delete this->buffer;
}
// Set the new buffer
this->buffer = newBuffer;
this->internalBufferSize = newBufferSize;
}else{
// append the appendBuffer
float *dst = &this->buffer[this->sampleSize*this->channels];
float *src = appendBuffer->BufferPointer();
long si = appendBuffer->Samples()*this->channels;
// CopyFloat( this->buffer + this->sampleSize*this->channels*sizeof(float),appendBuffer->BufferPointer(),appendBuffer->Samples()*this->channels);
CopyFloat( dst,src,si);
}
this->sampleSize = newBufferSize/this->channels;
return true;
}
return false;
}
BufferPtr Stream::GetNextBuffer(){
// First get the next decoded buffer
BufferPtr currentBuffer = this->GetNextDecoderBuffer();
if(currentBuffer){
/////////////////////////////////////////////
// Lets check if the buffer is too small
bool moreBuffers(true);
while(currentBuffer->Samples()<this->preferedBufferSampleSize && moreBuffers){
BufferPtr appendBuffer = this->GetNextDecoderBuffer();
if(appendBuffer){
currentBuffer->Append(appendBuffer);
this->DeleteBuffer(appendBuffer);
}else{
moreBuffers = false;
}
}
/////////////////////////////////////////////
BufferPtr oldBuffer = this->NewBuffer();
// Now lets loop through all DSP plugins
for(Dsps::iterator dsp=this->dsps.begin();dsp!=this->dsps.end();++dsp){
oldBuffer->CopyFormat(currentBuffer);
oldBuffer->position = currentBuffer->position;
if( (*dsp)->ProcessBuffers(currentBuffer.get(),oldBuffer.get()) ){
// Success in processing DSP, swap the buffers
currentBuffer.swap(oldBuffer);
}
}
this->DeleteBuffer(oldBuffer);
}
return currentBuffer;
}
BufferPtr Stream::GetNextDecoderBuffer(){
// First get a buffer
BufferPtr buffer = this->NewBuffer();
// Get the buffer from the decoder
if(!this->decoder->GetBuffer(buffer.get())){
// Nothing to decode left, return a empty buffer
return BufferPtr();
}
// We need to save the decoders samplerate to be able to calculate the current time-position
if(!this->decoderSampleRate){
this->decoderSampleRate = buffer->SampleRate();
}
// Calculate the current sample position
this->decoderSamplePosition += buffer->Samples();
// Save the position (seconds) in the buffer
buffer->position = ((double)this->decoderSamplePosition)/((double)this->decoderSampleRate);
return buffer;
}
//////////////////////////////////////////
///\brief
///Copies all the formats from one buffer to another
//////////////////////////////////////////
void Buffer::CopyFormat(BufferPtr fromBuffer){
this->sampleSize = fromBuffer->Samples();
this->channels = fromBuffer->Channels();
this->sampleRate = fromBuffer->SampleRate();
this->ResizeBuffer();
}
