AudioBufferSource.cxx

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#include "AudioBufferSource.hxx"
#include "ProcessingFactory.hxx"
#include "Audio.hxx"

namespace CLAM
{

namespace
{
        static const char* metadata[] = {
                "key", "AudioBufferSource",
                "category", "Audio I/O",
                "description", "AudioBufferSource",
                "port_source_type", typeid(Audio).name(),
                "icon", "source.svg",
                "embedded_svg", "source.svg",
                0
        };
        static FactoryRegistrator<ProcessingFactory, AudioBufferSource> reg = metadata;
}

AudioBufferSource::Config::~Config() { }

bool AudioBufferSource::Do()
{
        for (Ports::iterator it = _ports.begin(); it != _ports.end(); ++it)
        {
                Port& port = (*it);
                OutPort<Audio>* out = port.mPort;

                CLAM::Audio& so=out->GetData();
                CLAM_DEBUG_ASSERT(!port.mFloatBuffer || !port.mDoubleBuffer, "AudioBufferSource: Just one buffer should be set");
                CLAM_DEBUG_ASSERT(port.mFloatBuffer || port.mDoubleBuffer, "AudioBufferSource: No external buffer set");
                CLAM_DEBUG_ASSERT(port.mBufferSize>0, "AudioBufferSource: internal buffer size must be greater than 0");
                
                so.SetSize(port.mBufferSize);
                
                CLAM::TData * audioBuffer = so.GetBuffer().GetPtr();

                if (port.mFloatBuffer)
                        for (unsigned i=0; i<port.mBufferSize; i++)
                                audioBuffer[i] = port.mFloatBuffer[i];
                else
                        for (unsigned i=0; i<port.mBufferSize; i++)
                                audioBuffer[i] = port.mDoubleBuffer[i];

                for (int i=port.mBufferSize; i<out->GetSize(); i++)
                        audioBuffer[i] = 0.;

                out->Produce();
        }
        return true;
}

void AudioBufferSource::SetExternalBuffer(const float* buf, unsigned nframes, unsigned index)
{
        CLAM_ASSERT(index < _ports.size(), "OutPort<Audio> index out of range");
        Port& port = _ports[index];
        port.mPort->SetSize(1);
        port.mPort->SetHop(1);
        port.mFloatBuffer = buf;
        port.mBufferSize = nframes;
        port.mDoubleBuffer = 0;
}

void AudioBufferSource::SetExternalBuffer(const double* buf, unsigned nframes, unsigned index)
{
        CLAM_ASSERT(index < _ports.size(), "OutPort<Audio> index out of range");
        Port& port = _ports[index];
        port.mPort->SetSize(1);
        port.mPort->SetHop(1);
        port.mDoubleBuffer = buf;
        port.mBufferSize = nframes;
        port.mFloatBuffer = 0;
}

} //namespace CLAM