Method transferVideoFrame

core/media/MfMediaEngine.cpp:253–286

bool MfMediaEngine::transferVideoFrame()
{
    if (m_mediaEngine != nullptr && m_state == MEMediaState::Playing)
    {
        do
        {
            LONGLONG pts;
            AX_BREAK_IF(FAILED(m_mediaEngine->OnVideoStreamTick(&pts)));

            const MFVideoNormalizedRect rect{0, 0, 1.0, 1.0};
            const RECT rcTarget{0, 0, m_videoExtent.x, m_videoExtent.y};
            HRESULT hr = m_mediaEngine->TransferVideoFrame(m_wicBitmap.Get(), &rect, &rcTarget, &m_bkgColor);
            AX_BREAK_IF(FAILED(hr));

            ComPtr<IWICBitmapLock> lockedData;
            DWORD flags = WICBitmapLockRead;
            WICRect srcRect{0, 0, m_videoExtent.x, m_videoExtent.y};

            AX_BREAK_IF(FAILED(m_wicBitmap->Lock(&srcRect, flags, lockedData.GetAddressOf())));

            UINT stride{0};
            AX_BREAK_IF(FAILED(lockedData->GetStride(&stride)));

            UINT bufferSize{0};
            BYTE* data{nullptr};
            AX_BREAK_IF(FAILED(lockedData->GetDataPointer(&bufferSize, &data)));

            _onVideoFrame(MEVideoFrame{data, nullptr, bufferSize, MEVideoPixelDesc{MEVideoPixelFormat::BGR32, m_videoExtent},
                                  m_videoExtent});
            return true;
        } while (false);
    }
    return false;
}

void MfMediaEngine::OnMediaEngineEvent(uint32_t meEvent)
{