Method decodeData

plugins/VOIP/gui/VideoProcessor.cpp:327–369

}

bool JPEGVideo::decodeData(const RsVOIPDataChunk& chunk,QImage& image)
{
    // now see if the frame is a differential frame, or just a reference frame.

    uint16_t codec = ((unsigned char *)chunk.data)[0] + (((unsigned char *)chunk.data)[1] << 8) ;
    uint16_t flags = ((unsigned char *)chunk.data)[2] + (((unsigned char *)chunk.data)[3] << 8) ;

    assert(codec == VideoProcessor::VIDEO_PROCESSOR_CODEC_ID_JPEG_VIDEO) ;

    //  un-compress image data

    QByteArray qb((char*)&((uint8_t*)chunk.data)[HEADER_SIZE],(int)chunk.size - HEADER_SIZE) ;

    if(!image.loadFromData(qb,"JPEG"))
    {
	    std::cerr << "image.loadFromData(): returned an error.: " << std::endl;
	    return false ;
    }

    if(flags & JPEG_VIDEO_FLAGS_DIFFERENTIAL_FRAME)
    {
	    if(_decoded_reference_frame.size() != image.size())
	    {
		    std::cerr << "Bad reference frame!" << std::endl;
		    return false ;
	    }

	    QImage res = _decoded_reference_frame ;

	    for(int i=0;i<image.byteCount();++i)
	    {
		    int new_val = (int)res.bits()[i] + ((int)image.bits()[i] - 128) ;

		    res.bits()[i] = std::max(0,std::min(255,new_val)) ;
	    }

	    image = res ;
    }
    else
        _decoded_reference_frame = image ;

    return true ;
}

bool JPEGVideo::encodeData(const QImage& image,uint32_t /* size_hint */,RsVOIPDataChunk& voip_chunk)
{