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/****************************************************************************
**
** Copyright (C) 2022 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
******************************************************************************/
#include <system_error>
#include <mferror.h>
#include <qlogging.h>
#include <qdebug.h>
#include "mfdecodersourcereader_p.h"
QWindowsIUPointer<IMFMediaType> MFDecoderSourceReader::setSource(IMFMediaSource *source, QAudioFormat::SampleFormat sampleFormat)
{
QWindowsIUPointer<IMFMediaType> mediaType;
m_sourceReader.reset();
if (!source)
return mediaType;
QWindowsIUPointer<IMFAttributes> attr;
MFCreateAttributes(attr.address(), 1);
if (FAILED(attr->SetUnknown(MF_SOURCE_READER_ASYNC_CALLBACK, this)))
return mediaType;
if (FAILED(attr->SetUINT32(MF_SOURCE_READER_DISCONNECT_MEDIASOURCE_ON_SHUTDOWN, TRUE)))
return mediaType;
HRESULT hr = MFCreateSourceReaderFromMediaSource(source, attr.get(), m_sourceReader.address());
if (FAILED(hr)) {
qWarning() << "MFDecoderSourceReader: failed to setup source reader: "
<< std::system_category().message(hr).c_str();
return mediaType;
}
m_sourceReader->SetStreamSelection(DWORD(MF_SOURCE_READER_ALL_STREAMS), FALSE);
m_sourceReader->SetStreamSelection(DWORD(MF_SOURCE_READER_FIRST_AUDIO_STREAM), TRUE);
QWindowsIUPointer<IMFMediaType> pPartialType;
MFCreateMediaType(pPartialType.address());
pPartialType->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Audio);
pPartialType->SetGUID(MF_MT_SUBTYPE, sampleFormat == QAudioFormat::Float ? MFAudioFormat_Float : MFAudioFormat_PCM);
m_sourceReader->SetCurrentMediaType(DWORD(MF_SOURCE_READER_FIRST_AUDIO_STREAM), nullptr, pPartialType.get());
m_sourceReader->GetCurrentMediaType(DWORD(MF_SOURCE_READER_FIRST_AUDIO_STREAM), mediaType.address());
// Ensure the stream is selected.
m_sourceReader->SetStreamSelection(DWORD(MF_SOURCE_READER_FIRST_AUDIO_STREAM), TRUE);
return mediaType;
}
void MFDecoderSourceReader::readNextSample()
{
if (m_sourceReader)
m_sourceReader->ReadSample(MF_SOURCE_READER_FIRST_AUDIO_STREAM, 0, NULL, NULL, NULL, NULL);
}
//from IUnknown
STDMETHODIMP MFDecoderSourceReader::QueryInterface(REFIID riid, LPVOID *ppvObject)
{
if (!ppvObject)
return E_POINTER;
if (riid == IID_IMFSourceReaderCallback) {
*ppvObject = static_cast<IMFSourceReaderCallback*>(this);
} else if (riid == IID_IUnknown) {
*ppvObject = static_cast<IUnknown*>(this);
} else {
*ppvObject = NULL;
return E_NOINTERFACE;
}
AddRef();
return S_OK;
}
STDMETHODIMP_(ULONG) MFDecoderSourceReader::AddRef()
{
return InterlockedIncrement(&m_cRef);
}
STDMETHODIMP_(ULONG) MFDecoderSourceReader::Release()
{
LONG cRef = InterlockedDecrement(&m_cRef);
if (cRef == 0) {
this->deleteLater();
}
return cRef;
}
//from IMFSourceReaderCallback
STDMETHODIMP MFDecoderSourceReader::OnReadSample(HRESULT hrStatus, DWORD dwStreamIndex,
DWORD dwStreamFlags, LONGLONG llTimestamp, IMFSample *pSample)
{
Q_UNUSED(hrStatus);
Q_UNUSED(dwStreamIndex);
Q_UNUSED(llTimestamp);
if (pSample) {
pSample->AddRef();
emit newSample(QWindowsIUPointer{pSample});
} else if ((dwStreamFlags & MF_SOURCE_READERF_ENDOFSTREAM) == MF_SOURCE_READERF_ENDOFSTREAM) {
emit finished();
}
return S_OK;
}
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