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WMF: fix reported sample type of 8-bit audio formats.

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Always report 8-bit PCM data as unsigned integer. Even though there's
no API to actually know that, it's standard on Windows. 8-bit is
unsigned and 16-bit is signed.

Task-number: QTBUG-45540
Change-Id: I4a3c09084de688ea7afc3bc147508184fb582224
Reviewed-by: Christian Stromme <christian.stromme@theqtcompany.com>
This commit is contained in:
Yoann Lopes
2015-04-14 13:42:46 +02:00
parent f3a07360dd
commit b109f093d9
2 changed files with 18 additions and 12 deletions
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25
src/plugins/wmf/decoder/mfaudiodecodercontrol.cpp
View File

@@ -193,17 +193,6 @@ void MFAudioDecoderControl::handleMediaSourceReady()
if (mediaType) {
m_sourceOutputFormat = m_audioFormat;
QAudioFormat af = m_audioFormat;
GUID subType;
if (SUCCEEDED(mediaType->GetGUID(MF_MT_SUBTYPE, &subType))) {
if (subType == MFAudioFormat_Float) {
m_sourceOutputFormat.setSampleType(QAudioFormat::Float);
} else {
m_sourceOutputFormat.setSampleType(QAudioFormat::SignedInt);
}
}
if (m_sourceOutputFormat.sampleType() != QAudioFormat::Float) {
m_sourceOutputFormat.setByteOrder(QAudioFormat::LittleEndian);
}
UINT32 val = 0;
if (SUCCEEDED(mediaType->GetUINT32(MF_MT_AUDIO_NUM_CHANNELS, &val))) {
@@ -216,6 +205,20 @@ void MFAudioDecoderControl::handleMediaSourceReady()
m_sourceOutputFormat.setSampleSize(int(val));
}
GUID subType;
if (SUCCEEDED(mediaType->GetGUID(MF_MT_SUBTYPE, &subType))) {
if (subType == MFAudioFormat_Float) {
m_sourceOutputFormat.setSampleType(QAudioFormat::Float);
} else if (m_sourceOutputFormat.sampleSize() == 8) {
m_sourceOutputFormat.setSampleType(QAudioFormat::UnSignedInt);
} else {
m_sourceOutputFormat.setSampleType(QAudioFormat::SignedInt);
}
}
if (m_sourceOutputFormat.sampleType() != QAudioFormat::Float) {
m_sourceOutputFormat.setByteOrder(QAudioFormat::LittleEndian);
}
if (m_audioFormat.sampleType() != QAudioFormat::Float
&& m_audioFormat.sampleType() != QAudioFormat::SignedInt) {
af.setSampleType(m_sourceOutputFormat.sampleType());

5
src/plugins/wmf/player/mfplayersession.cpp
View File

@@ -556,7 +556,10 @@ QAudioFormat MFPlayerSession::audioFormatForMFMediaType(IMFMediaType *mediaType)
format.setSampleSize(wfx->wBitsPerSample);
format.setCodec("audio/pcm");
format.setByteOrder(QAudioFormat::LittleEndian);
format.setSampleType(QAudioFormat::SignedInt);
if (format.sampleSize() == 8)
format.setSampleType(QAudioFormat::UnSignedInt);
else
format.setSampleType(QAudioFormat::SignedInt);
CoTaskMemFree(wfx);
return format;