Method InitDecoder

decoder/LAVVideo/decoders/quicksync.cpp:462–675

}

STDMETHODIMP CDecQuickSync::InitDecoder(AVCodecID codec, const CMediaType *pmt, const MediaSideDataFFMpeg *pSideData)
{
    HRESULT hr = S_OK;
    DbgLog((LOG_TRACE, 10, L"CDecQuickSync::InitDecoder(): Initializing QuickSync decoder"));

    DestroyDecoder(false);

    FOURCC fourCC = (FOURCC)0;
    for (int i = 0; i < countof(quicksync_codecs); i++)
    {
        if (quicksync_codecs[i].ffcodec == codec)
        {
            fourCC = quicksync_codecs[i].fourCC;
            break;
        }
    }

    if (fourCC == 0)
    {
        DbgLog((LOG_TRACE, 10, L"-> Codec id %d does not map to a QuickSync FourCC codec", codec));
        return E_FAIL;
    }

    m_pDecoder = qs.create();
    if (!m_pDecoder || !m_pDecoder->getOK())
    {
        DbgLog((LOG_TRACE, 10, L"-> Decoder creation failed"));
        return E_FAIL;
    }
    m_pDecoder->SetDeliverSurfaceCallback(this, &QS_DeliverSurfaceCallback);

    m_nAVCNalSize = 0;
    if (pmt->subtype == MEDIASUBTYPE_AVC1 || pmt->subtype == MEDIASUBTYPE_avc1 || pmt->subtype == MEDIASUBTYPE_CCV1)
    {
        if (pmt->formattype == FORMAT_MPEG2Video)
        {
            MPEG2VIDEOINFO *mp2vi = (MPEG2VIDEOINFO *)pmt->pbFormat;
            fourCC = FourCC_AVC1;
            m_bAVC1 = TRUE;
            m_nAVCNalSize = mp2vi->dwFlags;
        }
        else
        {
            DbgLog((LOG_TRACE, 10, L"-> AVC1 without MPEG2VIDEOINFO not supported"));
            return E_FAIL;
        }
    }

    BYTE *extradata = nullptr;
    size_t extralen = 0;
    getExtraData(*pmt, nullptr, &extralen);
    if (extralen > 0)
    {
        extradata = (BYTE *)av_malloc(extralen + AV_INPUT_BUFFER_PADDING_SIZE);
        if (extradata == nullptr)
            return E_OUTOFMEMORY;
        getExtraData(*pmt, extradata, nullptr);
    }