/*
 *******************************************************************************
 *                                   INCLUDE
 *******************************************************************************
 */
#include "AudioAdaptablePipe.h"

namespace Video
{
namespace Core
{
/*
 *******************************************************************************
 *                                CLASS DEFINE
 *******************************************************************************
 */
void AudioAdaptablePipe::onLink(Core::Component::Ptr pPrevious)
{
    if (!frameQueues().empty() && frameQueues().firstComponent() != pPrevious)
        throw Poco::LogicException(name() + ": Support only one previous component, conflict with: " +
                                   pPrevious->name() + ", Current: " + frameQueues().firstComponent()->name());

    frameQueues().add(pPrevious, name(), MediaType::AUDIO);
}

void AudioAdaptablePipe::onUnlink(Core::Component::Ptr pPrevious)
{
    frameQueues().remove(pPrevious);
}

Frame::Ptr AudioAdaptablePipe::readFrame(uint32_t timeout)
{
    if (previousComponents().size() == 0)
        throw Poco::NotFoundException(name() + ": No previous components");

    auto pFrameQueue = frameQueues().first();
    while (true)
    {
        Frame::Ptr pFrame = nullptr;
        if (!_pFrameAdapter.isNull())
        {
            pFrame = _pFrameAdapter->get();
            if (!pFrame.isNull())
                return pFrame;
        }

        pFrame = pFrameQueue->dequeue(timeout);
        if (serialCodeWatcher().isChanged(pFrame->code, true))
        {
            auto pPrevious = previousComponents().first().cast<AudioComponent>();

            auto inLayout  = pPrevious->getChannelLayout();
            auto inFormat  = pPrevious->getSampleFormat();
            auto inRate    = pPrevious->getSampleRate();
            auto outLayout = getChannelLayout();
            auto outFormat = getSampleFormat();
            auto outRate   = getSampleRate();

            if (inLayout != outLayout || inFormat != outFormat || inRate != outRate)
                _pResample = AudioResample::create(inLayout, inFormat, inRate, outLayout, outFormat, outRate);
            else
                _pResample.reset();

            if (inRate != outRate || pPrevious->getFrameSize() != getFrameSize())
                _pFrameAdapter = new AudioFrameAdapter(outLayout, outFormat, getFrameSize(), outRate);
            else
                _pFrameAdapter.reset();
        }

        if (_pFrameAdapter.isNull() && _pResample.isNull())
            return pFrame;

        if (!_pResample.isNull())
            pFrame = _pResample->process(pFrame);

        if (!_pFrameAdapter.isNull())
            _pFrameAdapter->put(pFrame);
        else
            return pFrame;
    }
}
}
}