// This is called from the DoProcessOutput method if the stream format
// has changed.
//
// Thread context: decoder thread
bool DecoderMF::HandleStreamChange()
{
bool ret = false;
HRESULT hr;
DWORD numOutputStreams;
IMFMediaType* mediaType = NULL;
AM_MEDIA_TYPE* mformt = NULL;
hr = m_h264Decoder->GetStreamCount(NULL, &numOutputStreams);
if (FAILED(hr))
goto bail;
if (numOutputStreams != 1)
goto bail;
hr = S_OK;
int idx = 0;
while (hr == S_OK)
{
hr = m_h264Decoder->GetOutputAvailableType(0, idx, &mediaType);
if (FAILED(hr))
goto bail;
mediaType->GetRepresentation(FORMAT_MFVideoFormat , (LPVOID*)&mformt);
MFVIDEOFORMAT* z = (MFVIDEOFORMAT*)mformt->pbFormat;
unsigned int format = z->surfaceInfo.Format;
mediaType->FreeRepresentation(FORMAT_MFVideoFormat ,(LPVOID)mformt);
if (format == '2YUY')
break;
++idx;
}
hr = m_h264Decoder->SetOutputType(0, mediaType, 0);
if (FAILED(hr))
goto bail;
if (! CreateOutputSample())
goto bail;
if (m_previewWindow != NULL)
{
if (! m_previewWindow->SetMediaType(mediaType))
goto bail;
m_previewConfigured = true;
}
ret = true;
bail:
if (mediaType != NULL)
mediaType->Release();
return ret;
}
MediaFoundationTransform::MediaFoundationTransform(IMFActivate *activationObj, WmaEncodingFormat encodingFormat)
{
UINT32 nameLen;
// Transform name is an MFActivate object property, so get that first
activationObj->GetString(MFT_FRIENDLY_NAME_Attribute, _transformName, sizeof(_transformName), &nameLen);
HRESULT hr = activationObj->ActivateObject(IID_PPV_ARGS(&_mfEncoder));
hr = _mfEncoder->QueryInterface(IID_PPV_ARGS(&_propertyStore));
// Configure the tranform to perform the requested compression format
switch (encodingFormat)
{
case WmaEncodingFormat::Lossless:
SetBooleanProperty(MFPKEY_VBRENABLED, true);
SetBooleanProperty(MFPKEY_CONSTRAIN_ENUMERATED_VBRQUALITY, true);
SetUint32Property(MFPKEY_DESIRED_VBRQUALITY, 100);
break;
case WmaEncodingFormat::Quality_10:
SetBooleanProperty(MFPKEY_VBRENABLED, true);
SetBooleanProperty(MFPKEY_CONSTRAIN_ENUMERATED_VBRQUALITY, true);
SetUint32Property(MFPKEY_DESIRED_VBRQUALITY, 10);
break;
case WmaEncodingFormat::Quality_25:
SetBooleanProperty(MFPKEY_VBRENABLED, true);
SetBooleanProperty(MFPKEY_CONSTRAIN_ENUMERATED_VBRQUALITY, true);
SetUint32Property(MFPKEY_DESIRED_VBRQUALITY, 25);
break;
case WmaEncodingFormat::Quality_50:
SetBooleanProperty(MFPKEY_VBRENABLED, true);
SetBooleanProperty(MFPKEY_CONSTRAIN_ENUMERATED_VBRQUALITY, true);
SetUint32Property(MFPKEY_DESIRED_VBRQUALITY, 50);
break;
case WmaEncodingFormat::Quality_75:
SetBooleanProperty(MFPKEY_VBRENABLED, true);
SetBooleanProperty(MFPKEY_CONSTRAIN_ENUMERATED_VBRQUALITY, true);
SetUint32Property(MFPKEY_DESIRED_VBRQUALITY, 75);
break;
case WmaEncodingFormat::Quality_90:
SetBooleanProperty(MFPKEY_VBRENABLED, true);
SetBooleanProperty(MFPKEY_CONSTRAIN_ENUMERATED_VBRQUALITY, true);
SetUint32Property(MFPKEY_DESIRED_VBRQUALITY, 90);
break;
case WmaEncodingFormat::Quality_98:
SetBooleanProperty(MFPKEY_VBRENABLED, true);
SetBooleanProperty(MFPKEY_CONSTRAIN_ENUMERATED_VBRQUALITY, true);
SetUint32Property(MFPKEY_DESIRED_VBRQUALITY, 98);
break;
}
hr = _propertyStore->Commit();
// enumerate output types and try to find the appropriate one for our purposes
DWORD index = 0;
while (true)
{
IMFMediaType *mediaType;
hr = _mfEncoder->GetOutputAvailableType(0, index++, &mediaType);
if (hr == MF_E_NO_MORE_TYPES)
break;
// Get the AM_MEDIA_TYPE structure from the media type, in case we want to need
// to differentiate between Standard and Pro WMA codecs in the future...
AM_MEDIA_TYPE *amMediaType;
mediaType->GetRepresentation(AM_MEDIA_TYPE_REPRESENTATION, (LPVOID *) &amMediaType);
WAVEFORMATEX *waveFormat = (WAVEFORMATEX *) amMediaType->pbFormat;
// there's only a few things we're interested in with the output type, so only bother grabbing those values
UINT32 channelCount;
UINT32 samplesPerSecond;
UINT32 bitsPerSample;
hr = mediaType->GetUINT32(MF_MT_AUDIO_NUM_CHANNELS, &channelCount);
hr = mediaType->GetUINT32(MF_MT_AUDIO_SAMPLES_PER_SECOND, &samplesPerSecond);
hr = mediaType->GetUINT32(MF_MT_AUDIO_BITS_PER_SAMPLE, &bitsPerSample);
if ((channelCount == 2) && (bitsPerSample == 16) && (samplesPerSecond == 44100))
{
_mfMediaType = mediaType;
// IMFActivate *areYouFuckingSerious;
// activationObj->ShutdownObject();
// _mfEncoder->Release();
// hr = MFCreateWMAEncoderActivate(mediaType, _propertyStore, &areYouFuckingSerious);
// hr = areYouFuckingSerious->ActivateObject(IID_PPV_ARGS(&_mfEncoder));
break;
}
}
index = 0;
}