Method getThumbnail

common/avdecoder.cpp:209–231

}

QByteArray AVDecoder::getThumbnail(int &width, int &height)
{
    QByteArray data;

    if(!loadCodec(CODEC_VIDEO)) {
        return data;
    }

    AVFrame *pFrame = getDecodedFrame(pCodecCtx, stream_index);

    if(pFrame != NULL) {

        calculate_thumbnail_dimensions(pCodecCtx->width, pCodecCtx->height,
                                       pCodecCtx->sample_aspect_ratio.num,
                                       pCodecCtx->sample_aspect_ratio.den,
                                       width, height);

        data = WriteJPEG(pCodecCtx, pFrame, width, height);
        av_frame_free(&pFrame);
    }

    return data;
}

QByteArray AVDecoder::WriteJPEG(AVCodecContext *pCodecCtx, AVFrame *pFrame, int width, int height)
{