Method FindVideoServiceConversion

decoder/LAVVideo/decoders/dxva2dec.cpp:437–523

}

HRESULT CDecDXVA2::FindVideoServiceConversion(AVCodecID codec, int profile, D3DFORMAT suggestedOutput, GUID *input, D3DFORMAT *output)
{
    HRESULT hr = S_OK;

    UINT count = 0;
    GUID *input_list = nullptr;

    /* Gather the format supported by the decoder */
    hr = m_pDXVADecoderService->GetDecoderDeviceGuids(&count, &input_list);
    if (FAILED(hr))
    {
        DbgLog((LOG_TRACE, 10, L"-> GetDecoderDeviceGuids failed with hr: %X", hr));
        goto done;
    }

    DbgLog((LOG_TRACE, 10, L"-> Enumerating supported DXVA2 modes (count: %d)", count));
    for (unsigned i = 0; i < count; i++)
    {
        const GUID *g = &input_list[i];
        const dxva_mode_t *mode = get_dxva_mode_from_guid(g);
        if (mode)
        {
            DbgLog((LOG_TRACE, 10, L"  -> %S", mode->name));
        }
        else
        {
            DbgLog((LOG_TRACE, 10, L"  -> Unknown GUID (%s)", WStringFromGUID(*g).c_str()));
        }
    }

    /* Iterate over our priority list */
    for (unsigned i = 0; dxva_modes[i].name; i++)
    {
        const dxva_mode_t *mode = &dxva_modes[i];
        if (!check_dxva_mode_compatibility(mode, codec, profile, 0, (suggestedOutput == FOURCC_NV12)))
            continue;

        BOOL supported = FALSE;
        for (const GUID *g = &input_list[0]; !supported && g < &input_list[count]; g++)
        {
            supported = IsEqualGUID(*mode->guid, *g);
        }
        if (!supported)
            continue;

        DbgLog((LOG_TRACE, 10, L"-> Trying to use '%S'", mode->name));
        UINT out_count = 0;
        D3DFORMAT *out_list = nullptr;
        hr = m_pDXVADecoderService->GetDecoderRenderTargets(*mode->guid, &out_count, &out_list);
        if (FAILED(hr))
        {
            DbgLog((LOG_TRACE, 10, L"-> Retrieving render targets failed with hr: %X", hr));
            continue;
        }

        BOOL matchingFormat = FALSE;
        D3DFORMAT format = D3DFMT_UNKNOWN;
        DbgLog((LOG_TRACE, 10, L"-> Enumerating render targets (count: %d)", out_count));