C++ (Cpp) WMFDecoderDllNameFor示例

示例#1

文件： WMFUtils.cpp 项目： dadaa/gecko-dev

bool
EnsureLibs()
{
  static bool sInitDone = false;
  static bool sInitOk = false;
  if (!sInitDone) {
    sInitOk = LinkMfplat() &&
              !!GetModuleHandleA(WMFDecoderDllNameFor(AAC)) &&
              !!GetModuleHandleA(WMFDecoderDllNameFor(H264));
    sInitDone = true;
  }
  return sInitOk;
}

示例#2

文件： WMFAACDecoder.cpp 项目： AtulKumar2/gecko-dev

HRESULT
WMFAACDecoder::Init(int32_t aChannelCount,
                    int32_t aSampleRate,
                    BYTE* aAACAudioSpecificConfig,
                    UINT32 aAudioConfigLength)
{
  HRESULT hr;

  // AAC decoder is in msauddecmft on Win8, and msmpeg2adec in earlier versions.
  hr = CreateMFT(CLSID_CMSAACDecMFT,
                 WMFDecoderDllNameFor(AAC),
                 mDecoder);
  if (FAILED(hr)) {
    hr = CreateMFT(CLSID_CMSAACDecMFT,
                   WMFDecoderDllNameFor(AAC),
                   mDecoder);
    if (FAILED(hr)) {
      LOG("Failed to create AAC decoder\n");
      return E_FAIL;
    }
  }

  BYTE* userData = nullptr;
  UINT32 userDataLength;
  hr = AACAudioSpecificConfigToUserData(aAACAudioSpecificConfig,
                                        aAudioConfigLength,
                                        &userData,
                                        &userDataLength);
  ENSURE(SUCCEEDED(hr), hr);
  hr = SetDecoderInputType(aChannelCount, aSampleRate, userData, userDataLength);
  delete userData;
  ENSURE(SUCCEEDED(hr), hr);

  hr = SetDecoderOutputType();
  ENSURE(SUCCEEDED(hr), hr);

  hr = SendMFTMessage(MFT_MESSAGE_NOTIFY_BEGIN_STREAMING, 0);
  ENSURE(SUCCEEDED(hr), hr);

  hr = SendMFTMessage(MFT_MESSAGE_NOTIFY_START_OF_STREAM, 0);
  ENSURE(SUCCEEDED(hr), hr);

  hr = mDecoder->GetInputStreamInfo(0, &mInputStreamInfo);
  ENSURE(SUCCEEDED(hr), hr);

  hr = mDecoder->GetOutputStreamInfo(0, &mOutputStreamInfo);
  ENSURE(SUCCEEDED(hr), hr);

  return S_OK;
}