From 48c945bac3030c1c26dd9da9bea6e0deea7e5714 Mon Sep 17 00:00:00 2001 From: Ling Hu Date: Thu, 5 Jul 2012 14:47:42 +1000 Subject: Added wmf implementation for QAudioDecoderControl Change-Id: Ib6d5c93577bd55995a9ae51e757156149890f15d Reviewed-by: Jun Zhu Reviewed-by: Michael Goddard --- src/plugins/wmf/decoder/mfdecodersourcereader.cpp | 199 ++++++++++++++++++++++ 1 file changed, 199 insertions(+) create mode 100644 src/plugins/wmf/decoder/mfdecodersourcereader.cpp (limited to 'src/plugins/wmf/decoder/mfdecodersourcereader.cpp') diff --git a/src/plugins/wmf/decoder/mfdecodersourcereader.cpp b/src/plugins/wmf/decoder/mfdecodersourcereader.cpp new file mode 100644 index 000000000..04b50a19a --- /dev/null +++ b/src/plugins/wmf/decoder/mfdecodersourcereader.cpp @@ -0,0 +1,199 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "mfdecodersourcereader.h" + +MFDecoderSourceReader::MFDecoderSourceReader(QObject *parent) + : m_cRef(1) + , m_sourceReader(0) + , m_source(0) +{ + Q_UNUSED(parent) +} + +void MFDecoderSourceReader::shutdown() +{ + if (m_source) { + m_source->Release(); + m_source = NULL; + } + if (m_sourceReader) { + m_sourceReader->Release(); + m_sourceReader = NULL; + } +} + +IMFMediaSource* MFDecoderSourceReader::mediaSource() +{ + return m_source; +} + +IMFMediaType* MFDecoderSourceReader::setSource(IMFMediaSource *source, const QAudioFormat &audioFormat) +{ + IMFMediaType *mediaType = NULL; + if (m_source == source) + return mediaType; + if (m_source) { + m_source->Release(); + m_source = NULL; + } + if (m_sourceReader) { + m_sourceReader->Release(); + m_sourceReader = NULL; + } + if (!source) + return mediaType; + IMFAttributes *attr = NULL; + MFCreateAttributes(&attr, 1); + if (SUCCEEDED(attr->SetUnknown(MF_SOURCE_READER_ASYNC_CALLBACK, this))) { + if (SUCCEEDED(MFCreateSourceReaderFromMediaSource(source, attr, &m_sourceReader))) { + m_source = source; + m_source->AddRef(); + m_sourceReader->SetStreamSelection(DWORD(MF_SOURCE_READER_ALL_STREAMS), FALSE); + m_sourceReader->SetStreamSelection(DWORD(MF_SOURCE_READER_FIRST_AUDIO_STREAM), TRUE); + IMFMediaType *pPartialType = NULL; + MFCreateMediaType(&pPartialType); + pPartialType->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Audio); + + if (audioFormat.sampleType() == QAudioFormat::Float) { + pPartialType->SetGUID(MF_MT_SUBTYPE, MFAudioFormat_Float); + } else { + pPartialType->SetGUID(MF_MT_SUBTYPE, MFAudioFormat_PCM); + } + + m_sourceReader->SetCurrentMediaType(DWORD(MF_SOURCE_READER_FIRST_AUDIO_STREAM), NULL, pPartialType); + pPartialType->Release(); + m_sourceReader->GetCurrentMediaType(DWORD(MF_SOURCE_READER_FIRST_AUDIO_STREAM), &mediaType); + // Ensure the stream is selected. + m_sourceReader->SetStreamSelection(DWORD(MF_SOURCE_READER_FIRST_AUDIO_STREAM), TRUE); + } + attr->Release(); + } + return mediaType; +} + +void MFDecoderSourceReader::reset() +{ + if (!m_sourceReader) + return; + PROPVARIANT vPos; + PropVariantInit(&vPos); + vPos.vt = VT_I8; + vPos.uhVal.QuadPart = 0; + m_sourceReader->SetCurrentPosition(GUID_NULL, vPos); +} + +void MFDecoderSourceReader::readNextSample() +{ + if (!m_sourceReader) + return; + m_sourceReader->ReadSample(MF_SOURCE_READER_FIRST_AUDIO_STREAM, 0, NULL, NULL, NULL, NULL); +} + +QList MFDecoderSourceReader::takeSamples() //internal samples will be cleared after this +{ + QList samples; + m_samplesMutex.lock(); + samples = m_cachedSamples; + m_cachedSamples.clear(); + m_samplesMutex.unlock(); + return samples; +} + +//from IUnknown +STDMETHODIMP MFDecoderSourceReader::QueryInterface(REFIID riid, LPVOID *ppvObject) +{ + if (!ppvObject) + return E_POINTER; + if (riid == IID_IMFSourceReaderCallback) { + *ppvObject = static_cast(this); + } else if (riid == IID_IUnknown) { + *ppvObject = static_cast(this); + } else { + *ppvObject = NULL; + return E_NOINTERFACE; + } + AddRef(); + return S_OK; +} + +STDMETHODIMP_(ULONG) MFDecoderSourceReader::AddRef(void) +{ + return InterlockedIncrement(&m_cRef); +} + +STDMETHODIMP_(ULONG) MFDecoderSourceReader::Release(void) +{ + 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(); + m_samplesMutex.lock(); + m_cachedSamples.push_back(pSample); + m_samplesMutex.unlock(); + emit sampleAdded(); + } else if ((dwStreamFlags & MF_SOURCE_READERF_ENDOFSTREAM) == MF_SOURCE_READERF_ENDOFSTREAM) { + emit finished(); + } + return S_OK; +} + +STDMETHODIMP MFDecoderSourceReader::OnFlush(DWORD) +{ + return S_OK; +} + +STDMETHODIMP MFDecoderSourceReader::OnEvent(DWORD, IMFMediaEvent*) +{ + return S_OK; +} \ No newline at end of file -- cgit v1.2.3