WMF: make it possible to build only the audio decode service

The WMF plugin can now be built without the media player service. That
enables the audio decode service even when DirectShow is used as media
player backend.
The default configuration on Windows is now:
Camera, MediaPlayer -> DirectShow
AudioDecode -> WMF

Change-Id: Ic6f3c85ed849e0c603719cfb03794e6abd2d52fa
Reviewed-by: Christian Stromme <christian.stromme@qt.io>

1 files changed, 0 insertions, 738 deletions

diff --git a/src/plugins/wmf/mftvideo.cpp b/src/plugins/wmf/mftvideo.cpp
deleted file mode 100644
index 1b3c5bbca..000000000
--- a/src/plugins/wmf/mftvideo.cpp
+++ /dev/null
@@ -1,738 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2015 The Qt Company Ltd.
-** Contact: http://www.qt.io/licensing/
-**
-** This file is part of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL21$
-** 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 http://www.qt.io/terms-conditions. For further
-** information use the contact form at http://www.qt.io/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 or version 3 as published by the Free
-** Software Foundation and appearing in the file LICENSE.LGPLv21 and
-** LICENSE.LGPLv3 included in the packaging of this file. Please review the
-** following information to ensure the GNU Lesser General Public License
-** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** As a special exception, The Qt Company gives you certain additional
-** rights. These rights are described in The Qt Company LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "mftvideo.h"
-#include "mfvideoprobecontrol.h"
-#include <private/qmemoryvideobuffer_p.h>
-#include <Mferror.h>
-#include <strmif.h>
-#include <uuids.h>
-#include <InitGuid.h>
-#include <d3d9.h>
-#include <qdebug.h>
-
-// This MFT sends all samples it processes to connected video probes.
-// Sample is sent to probes in ProcessInput.
-// In ProcessOutput this MFT simply returns the original sample.
-
-// The implementation is based on a boilerplate from the MF SDK example.
-
-MFTransform::MFTransform():
-    m_cRef(1),
-    m_inputType(0),
-    m_outputType(0),
-    m_sample(0),
-    m_videoSinkTypeHandler(0),
-    m_bytesPerLine(0)
-{
-}
-
-MFTransform::~MFTransform()
-{
-    if (m_inputType)
-        m_inputType->Release();
-
-    if (m_outputType)
-        m_outputType->Release();
-
-    if (m_videoSinkTypeHandler)
-        m_videoSinkTypeHandler->Release();
-}
-
-void MFTransform::addProbe(MFVideoProbeControl *probe)
-{
-    QMutexLocker locker(&m_videoProbeMutex);
-
-    if (m_videoProbes.contains(probe))
-        return;
-
-    m_videoProbes.append(probe);
-}
-
-void MFTransform::removeProbe(MFVideoProbeControl *probe)
-{
-    QMutexLocker locker(&m_videoProbeMutex);
-    m_videoProbes.removeOne(probe);
-}
-
-void MFTransform::setVideoSink(IUnknown *videoSink)
-{
-    // This transform supports the same input types as the video sink.
-    // Store its type handler interface in order to report the correct supported types.
-
-    if (m_videoSinkTypeHandler) {
-        m_videoSinkTypeHandler->Release();
-        m_videoSinkTypeHandler = NULL;
-    }
-
-    if (videoSink)
-        videoSink->QueryInterface(IID_PPV_ARGS(&m_videoSinkTypeHandler));
-}
-
-STDMETHODIMP MFTransform::QueryInterface(REFIID riid, void** ppv)
-{
-    if (!ppv)
-        return E_POINTER;
-    if (riid == IID_IMFTransform) {
-        *ppv = static_cast<IMFTransform*>(this);
-    } else if (riid == IID_IUnknown) {
-        *ppv = static_cast<IUnknown*>(this);
-    } else {
-        *ppv =  NULL;
-        return E_NOINTERFACE;
-    }
-    AddRef();
-    return S_OK;
-}
-
-STDMETHODIMP_(ULONG) MFTransform::AddRef()
-{
-    return InterlockedIncrement(&m_cRef);
-}
-
-STDMETHODIMP_(ULONG) MFTransform::Release()
-{
-    ULONG cRef = InterlockedDecrement(&m_cRef);
-    if (cRef == 0) {
-        delete this;
-    }
-    return cRef;
-}
-
-STDMETHODIMP MFTransform::GetStreamLimits(DWORD *pdwInputMinimum, DWORD *pdwInputMaximum, DWORD *pdwOutputMinimum, DWORD *pdwOutputMaximum)
-{
-    if (!pdwInputMinimum || !pdwInputMaximum || !pdwOutputMinimum || !pdwOutputMaximum)
-        return E_POINTER;
-    *pdwInputMinimum = 1;
-    *pdwInputMaximum = 1;
-    *pdwOutputMinimum = 1;
-    *pdwOutputMaximum = 1;
-    return S_OK;
-}
-
-STDMETHODIMP MFTransform::GetStreamCount(DWORD *pcInputStreams, DWORD *pcOutputStreams)
-{
-    if (!pcInputStreams || !pcOutputStreams)
-        return E_POINTER;
-
-    *pcInputStreams = 1;
-    *pcOutputStreams = 1;
-    return S_OK;
-}
-
-STDMETHODIMP MFTransform::GetStreamIDs(DWORD dwInputIDArraySize, DWORD *pdwInputIDs, DWORD dwOutputIDArraySize, DWORD *pdwOutputIDs)
-{
-    // streams are numbered consecutively
-    Q_UNUSED(dwInputIDArraySize);
-    Q_UNUSED(pdwInputIDs);
-    Q_UNUSED(dwOutputIDArraySize);
-    Q_UNUSED(pdwOutputIDs);
-    return E_NOTIMPL;
-}
-
-STDMETHODIMP MFTransform::GetInputStreamInfo(DWORD dwInputStreamID, MFT_INPUT_STREAM_INFO *pStreamInfo)
-{
-    QMutexLocker locker(&m_mutex);
-
-    if (dwInputStreamID > 0)
-        return MF_E_INVALIDSTREAMNUMBER;
-
-    if (!pStreamInfo)
-        return E_POINTER;
-
-    pStreamInfo->cbSize = 0;
-    pStreamInfo->hnsMaxLatency = 0;
-    pStreamInfo->cbMaxLookahead = 0;
-    pStreamInfo->cbAlignment = 0;
-    pStreamInfo->dwFlags = MFT_INPUT_STREAM_WHOLE_SAMPLES
-                            | MFT_INPUT_STREAM_SINGLE_SAMPLE_PER_BUFFER
-                            | MFT_INPUT_STREAM_PROCESSES_IN_PLACE;
-
-    return S_OK;
-}
-
-STDMETHODIMP MFTransform::GetOutputStreamInfo(DWORD dwOutputStreamID, MFT_OUTPUT_STREAM_INFO *pStreamInfo)
-{
-    QMutexLocker locker(&m_mutex);
-
-    if (dwOutputStreamID > 0)
-        return MF_E_INVALIDSTREAMNUMBER;
-
-    if (!pStreamInfo)
-        return E_POINTER;
-
-    pStreamInfo->cbSize = 0;
-    pStreamInfo->cbAlignment = 0;
-    pStreamInfo->dwFlags = MFT_OUTPUT_STREAM_WHOLE_SAMPLES
-                            | MFT_OUTPUT_STREAM_SINGLE_SAMPLE_PER_BUFFER
-                            | MFT_OUTPUT_STREAM_PROVIDES_SAMPLES
-                            | MFT_OUTPUT_STREAM_DISCARDABLE;
-
-    return S_OK;
-}
-
-STDMETHODIMP MFTransform::GetAttributes(IMFAttributes **pAttributes)
-{
-    // This MFT does not support attributes.
-    Q_UNUSED(pAttributes);
-    return E_NOTIMPL;
-}
-
-STDMETHODIMP MFTransform::GetInputStreamAttributes(DWORD dwInputStreamID, IMFAttributes **pAttributes)
-{
-    // This MFT does not support input stream attributes.
-    Q_UNUSED(dwInputStreamID);
-    Q_UNUSED(pAttributes);
-    return E_NOTIMPL;
-}
-
-STDMETHODIMP MFTransform::GetOutputStreamAttributes(DWORD dwOutputStreamID, IMFAttributes **pAttributes)
-{
-    // This MFT does not support output stream attributes.
-    Q_UNUSED(dwOutputStreamID);
-    Q_UNUSED(pAttributes);
-    return E_NOTIMPL;
-}
-
-STDMETHODIMP MFTransform::DeleteInputStream(DWORD dwStreamID)
-{
-    // This MFT has a fixed number of input streams.
-    Q_UNUSED(dwStreamID);
-    return E_NOTIMPL;
-}
-
-STDMETHODIMP MFTransform::AddInputStreams(DWORD cStreams, DWORD *adwStreamIDs)
-{
-    // This MFT has a fixed number of input streams.
-    Q_UNUSED(cStreams);
-    Q_UNUSED(adwStreamIDs);
-    return E_NOTIMPL;
-}
-
-STDMETHODIMP MFTransform::GetInputAvailableType(DWORD dwInputStreamID, DWORD dwTypeIndex, IMFMediaType **ppType)
-{
-    // We support the same input types as the video sink
-    if (!m_videoSinkTypeHandler)
-        return E_NOTIMPL;
-
-    if (dwInputStreamID > 0)
-        return MF_E_INVALIDSTREAMNUMBER;
-
-    if (!ppType)
-        return E_POINTER;
-
-    return m_videoSinkTypeHandler->GetMediaTypeByIndex(dwTypeIndex, ppType);
-}
-
-STDMETHODIMP MFTransform::GetOutputAvailableType(DWORD dwOutputStreamID, DWORD dwTypeIndex, IMFMediaType **ppType)
-{
-    // Since we don't modify the samples, the output type must be the same as the input type.
-    // Report our input type as the only available output type.
-
-    if (dwOutputStreamID > 0)
-        return MF_E_INVALIDSTREAMNUMBER;
-
-    if (!ppType)
-        return E_POINTER;
-
-    // Input type must be set first
-    if (!m_inputType)
-        return MF_E_TRANSFORM_TYPE_NOT_SET;
-
-    if (dwTypeIndex > 0)
-        return MF_E_NO_MORE_TYPES;
-
-    // Return a copy to make sure our type is not modified
-    if (FAILED(MFCreateMediaType(ppType)))
-        return E_OUTOFMEMORY;
-
-    return m_inputType->CopyAllItems(*ppType);
-}
-
-STDMETHODIMP MFTransform::SetInputType(DWORD dwInputStreamID, IMFMediaType *pType, DWORD dwFlags)
-{
-    if (dwInputStreamID > 0)
-        return MF_E_INVALIDSTREAMNUMBER;
-
-    QMutexLocker locker(&m_mutex);
-
-    if (m_sample)
-        return MF_E_TRANSFORM_CANNOT_CHANGE_MEDIATYPE_WHILE_PROCESSING;
-
-    if (!isMediaTypeSupported(pType))
-        return MF_E_INVALIDMEDIATYPE;
-
-    if (dwFlags == MFT_SET_TYPE_TEST_ONLY)
-        return pType ? S_OK : E_POINTER;
-
-    if (m_inputType) {
-        m_inputType->Release();
-        // Input type has changed, discard output type (if it's set) so it's reset later on
-        DWORD flags = 0;
-        if (m_outputType && m_outputType->IsEqual(pType, &flags) != S_OK) {
-            m_outputType->Release();
-            m_outputType = 0;
-        }
-    }
-
-    m_inputType = pType;
-
-    if (m_inputType)
-        m_inputType->AddRef();
-
-    return S_OK;
-}
-
-STDMETHODIMP MFTransform::SetOutputType(DWORD dwOutputStreamID, IMFMediaType *pType, DWORD dwFlags)
-{
-    if (dwOutputStreamID > 0)
-        return MF_E_INVALIDSTREAMNUMBER;
-
-    if (dwFlags == MFT_SET_TYPE_TEST_ONLY && !pType)
-        return E_POINTER;
-
-    QMutexLocker locker(&m_mutex);
-
-    // Input type must be set first
-    if (!m_inputType)
-        return MF_E_TRANSFORM_TYPE_NOT_SET;
-
-    if (m_sample)
-        return MF_E_TRANSFORM_CANNOT_CHANGE_MEDIATYPE_WHILE_PROCESSING;
-
-    DWORD flags = 0;
-    if (pType && m_inputType->IsEqual(pType, &flags) != S_OK)
-        return MF_E_INVALIDMEDIATYPE;
-
-    if (dwFlags == MFT_SET_TYPE_TEST_ONLY)
-        return pType ? S_OK : E_POINTER;
-
-    if (m_outputType)
-        m_outputType->Release();
-
-    m_outputType = pType;
-
-    if (m_outputType) {
-        m_outputType->AddRef();
-        m_format = videoFormatForMFMediaType(m_outputType, &m_bytesPerLine);
-    }
-
-    return S_OK;
-}
-
-STDMETHODIMP MFTransform::GetInputCurrentType(DWORD dwInputStreamID, IMFMediaType **ppType)
-{
-    if (dwInputStreamID > 0)
-        return MF_E_INVALIDSTREAMNUMBER;
-
-    if (ppType == NULL)
-        return E_POINTER;
-
-    QMutexLocker locker(&m_mutex);
-
-    if (!m_inputType)
-        return MF_E_TRANSFORM_TYPE_NOT_SET;
-
-    // Return a copy to make sure our type is not modified
-    if (FAILED(MFCreateMediaType(ppType)))
-        return E_OUTOFMEMORY;
-
-    return m_inputType->CopyAllItems(*ppType);
-}
-
-STDMETHODIMP MFTransform::GetOutputCurrentType(DWORD dwOutputStreamID, IMFMediaType **ppType)
-{
-    if (dwOutputStreamID > 0)
-        return MF_E_INVALIDSTREAMNUMBER;
-
-    if (ppType == NULL)
-        return E_POINTER;
-
-    QMutexLocker locker(&m_mutex);
-
-    if (!m_outputType)
-        return MF_E_TRANSFORM_TYPE_NOT_SET;
-
-    // Return a copy to make sure our type is not modified
-    if (FAILED(MFCreateMediaType(ppType)))
-        return E_OUTOFMEMORY;
-
-    return m_outputType->CopyAllItems(*ppType);
-}
-
-STDMETHODIMP MFTransform::GetInputStatus(DWORD dwInputStreamID, DWORD *pdwFlags)
-{
-    if (dwInputStreamID > 0)
-        return MF_E_INVALIDSTREAMNUMBER;
-
-    if (!pdwFlags)
-        return E_POINTER;
-
-    QMutexLocker locker(&m_mutex);
-
-    if (!m_inputType || !m_outputType)
-        return MF_E_TRANSFORM_TYPE_NOT_SET;
-
-    if (m_sample)
-        *pdwFlags = 0;
-    else
-        *pdwFlags = MFT_INPUT_STATUS_ACCEPT_DATA;
-
-    return S_OK;
-}
-
-STDMETHODIMP MFTransform::GetOutputStatus(DWORD *pdwFlags)
-{
-    if (!pdwFlags)
-        return E_POINTER;
-
-    QMutexLocker locker(&m_mutex);
-
-    if (!m_inputType || !m_outputType)
-        return MF_E_TRANSFORM_TYPE_NOT_SET;
-
-    if (m_sample)
-        *pdwFlags = MFT_OUTPUT_STATUS_SAMPLE_READY;
-    else
-        *pdwFlags = 0;
-
-    return S_OK;
-}
-
-STDMETHODIMP MFTransform::SetOutputBounds(LONGLONG hnsLowerBound, LONGLONG hnsUpperBound)
-{
-    Q_UNUSED(hnsLowerBound);
-    Q_UNUSED(hnsUpperBound);
-    return E_NOTIMPL;
-}
-
-STDMETHODIMP MFTransform::ProcessEvent(DWORD dwInputStreamID, IMFMediaEvent *pEvent)
-{
-    // This MFT ignores all events, and the pipeline should send all events downstream.
-    Q_UNUSED(dwInputStreamID);
-    Q_UNUSED(pEvent);
-    return E_NOTIMPL;
-}
-
-STDMETHODIMP MFTransform::ProcessMessage(MFT_MESSAGE_TYPE eMessage, ULONG_PTR ulParam)
-{
-    Q_UNUSED(ulParam);
-
-    HRESULT hr = S_OK;
-
-    switch (eMessage)
-    {
-    case MFT_MESSAGE_COMMAND_FLUSH:
-        hr = OnFlush();
-        break;
-
-    case MFT_MESSAGE_COMMAND_DRAIN:
-        // Drain: Tells the MFT not to accept any more input until
-        // all of the pending output has been processed. That is our
-        // default behevior already, so there is nothing to do.
-        break;
-
-    case MFT_MESSAGE_SET_D3D_MANAGER:
-        // The pipeline should never send this message unless the MFT
-        // has the MF_SA_D3D_AWARE attribute set to TRUE. However, if we
-        // do get this message, it's invalid and we don't implement it.
-        hr = E_NOTIMPL;
-        break;
-
-    // The remaining messages do not require any action from this MFT.
-    case MFT_MESSAGE_NOTIFY_BEGIN_STREAMING:
-    case MFT_MESSAGE_NOTIFY_END_STREAMING:
-    case MFT_MESSAGE_NOTIFY_END_OF_STREAM:
-    case MFT_MESSAGE_NOTIFY_START_OF_STREAM:
-        break;
-    }
-
-    return hr;
-}
-
-STDMETHODIMP MFTransform::ProcessInput(DWORD dwInputStreamID, IMFSample *pSample, DWORD dwFlags)
-{
-    if (dwInputStreamID > 0)
-        return MF_E_INVALIDSTREAMNUMBER;
-
-    if (dwFlags != 0)
-        return E_INVALIDARG; // dwFlags is reserved and must be zero.
-
-    QMutexLocker locker(&m_mutex);
-
-    if (!m_inputType)
-        return MF_E_TRANSFORM_TYPE_NOT_SET;
-
-    if (m_sample)
-        return MF_E_NOTACCEPTING;
-
-    // Validate the number of buffers. There should only be a single buffer to hold the video frame.
-    DWORD dwBufferCount = 0;
-    HRESULT hr = pSample->GetBufferCount(&dwBufferCount);
-    if (FAILED(hr))
-        return hr;
-
-    if (dwBufferCount == 0)
-        return E_FAIL;
-
-    if (dwBufferCount > 1)
-        return MF_E_SAMPLE_HAS_TOO_MANY_BUFFERS;
-
-    m_sample = pSample;
-    m_sample->AddRef();
-
-    return S_OK;
-}
-
-STDMETHODIMP MFTransform::ProcessOutput(DWORD dwFlags, DWORD cOutputBufferCount, MFT_OUTPUT_DATA_BUFFER *pOutputSamples, DWORD *pdwStatus)
-{
-    if (pOutputSamples == NULL || pdwStatus == NULL)
-        return E_POINTER;
-
-    if (cOutputBufferCount != 1)
-        return E_INVALIDARG;
-
-    QMutexLocker locker(&m_mutex);
-
-    if (!m_inputType)
-        return MF_E_TRANSFORM_TYPE_NOT_SET;
-
-    if (!m_outputType) {
-        pOutputSamples[0].dwStatus = MFT_OUTPUT_DATA_BUFFER_FORMAT_CHANGE;
-        return MF_E_TRANSFORM_STREAM_CHANGE;
-    }
-
-    IMFMediaBuffer *input = NULL;
-    IMFMediaBuffer *output = NULL;
-
-    if (dwFlags == MFT_PROCESS_OUTPUT_DISCARD_WHEN_NO_BUFFER)
-        goto done;
-    else if (dwFlags != 0)
-        return E_INVALIDARG;
-
-    if (!m_sample)
-        return MF_E_TRANSFORM_NEED_MORE_INPUT;
-
-    // Since the MFT_OUTPUT_STREAM_PROVIDES_SAMPLES flag is set, the client
-    // should not be providing samples here
-    if (pOutputSamples[0].pSample != NULL)
-        return E_INVALIDARG;
-
-    pOutputSamples[0].pSample = m_sample;
-    pOutputSamples[0].pSample->AddRef();
-
-    // Send video frame to probes
-    // We do it here (instead of inside ProcessInput) to make sure samples discarded by the renderer
-    // are not sent.
-    m_videoProbeMutex.lock();
-    if (!m_videoProbes.isEmpty()) {
-        QVideoFrame frame = makeVideoFrame();
-
-        foreach (MFVideoProbeControl* probe, m_videoProbes)
-            probe->bufferProbed(frame);
-    }
-    m_videoProbeMutex.unlock();
-
-done:
-    pOutputSamples[0].dwStatus = 0;
-    *pdwStatus = 0;
-
-    m_sample->Release();
-    m_sample = 0;
-
-    if (input)
-        input->Release();
-    if (output)
-        output->Release();
-
-    return S_OK;
-}
-
-HRESULT MFTransform::OnFlush()
-{
-    QMutexLocker locker(&m_mutex);
-
-    if (m_sample) {
-        m_sample->Release();
-        m_sample = 0;
-    }
-    return S_OK;
-}
-
-QVideoFrame::PixelFormat MFTransform::formatFromSubtype(const GUID& subtype)
-{
-    if (subtype == MFVideoFormat_ARGB32)
-        return QVideoFrame::Format_ARGB32;
-    else if (subtype == MFVideoFormat_RGB32)
-        return QVideoFrame::Format_RGB32;
-    else if (subtype == MFVideoFormat_RGB24)
-        return QVideoFrame::Format_RGB24;
-    else if (subtype == MFVideoFormat_RGB565)
-        return QVideoFrame::Format_RGB565;
-    else if (subtype == MFVideoFormat_RGB555)
-        return QVideoFrame::Format_RGB555;
-    else if (subtype == MFVideoFormat_AYUV)
-        return QVideoFrame::Format_AYUV444;
-    else if (subtype == MFVideoFormat_I420)
-        return QVideoFrame::Format_YUV420P;
-    else if (subtype == MFVideoFormat_UYVY)
-        return QVideoFrame::Format_UYVY;
-    else if (subtype == MFVideoFormat_YV12)
-        return QVideoFrame::Format_YV12;
-    else if (subtype == MFVideoFormat_NV12)
-        return QVideoFrame::Format_NV12;
-
-    return QVideoFrame::Format_Invalid;
-}
-
-QVideoSurfaceFormat MFTransform::videoFormatForMFMediaType(IMFMediaType *mediaType, int *bytesPerLine)
-{
-    UINT32 stride;
-    if (FAILED(mediaType->GetUINT32(MF_MT_DEFAULT_STRIDE, &stride))) {
-        *bytesPerLine = 0;
-        return QVideoSurfaceFormat();
-    }
-
-    *bytesPerLine = (int)stride;
-
-    QSize size;
-    UINT32 width, height;
-    if (FAILED(MFGetAttributeSize(mediaType, MF_MT_FRAME_SIZE, &width, &height)))
-        return QVideoSurfaceFormat();
-
-    size.setWidth(width);
-    size.setHeight(height);
-
-    GUID subtype = GUID_NULL;
-    if (FAILED(mediaType->GetGUID(MF_MT_SUBTYPE, &subtype)))
-        return QVideoSurfaceFormat();
-
-    QVideoFrame::PixelFormat pixelFormat = formatFromSubtype(subtype);
-    QVideoSurfaceFormat format(size, pixelFormat);
-
-    UINT32 num, den;
-    if (SUCCEEDED(MFGetAttributeRatio(mediaType, MF_MT_PIXEL_ASPECT_RATIO, &num, &den))) {
-        format.setPixelAspectRatio(num, den);
-    }
-    if (SUCCEEDED(MFGetAttributeRatio(mediaType, MF_MT_FRAME_RATE, &num, &den))) {
-        format.setFrameRate(qreal(num)/den);
-    }
-
-    return format;
-}
-
-QVideoFrame MFTransform::makeVideoFrame()
-{
-    QVideoFrame frame;
-
-    if (!m_format.isValid())
-        return frame;
-
-    IMFMediaBuffer *buffer = 0;
-
-    do {
-        if (FAILED(m_sample->ConvertToContiguousBuffer(&buffer)))
-            break;
-
-        QByteArray array = dataFromBuffer(buffer, m_format.frameHeight(), &m_bytesPerLine);
-        if (array.isEmpty())
-            break;
-
-        // Wrapping IMFSample or IMFMediaBuffer in a QVideoFrame is not possible because we cannot hold
-        // IMFSample for a "long" time without affecting the rest of the topology.
-        // If IMFSample is held for more than 5 frames decoder starts to reuse it even though it hasn't been released it yet.
-        // That is why we copy data from IMFMediaBuffer here.
-        frame = QVideoFrame(new QMemoryVideoBuffer(array, m_bytesPerLine), m_format.frameSize(), m_format.pixelFormat());
-
-        // WMF uses 100-nanosecond units, Qt uses microseconds
-        LONGLONG startTime = -1;
-        if (SUCCEEDED(m_sample->GetSampleTime(&startTime))) {
-            frame.setStartTime(startTime * 0.1);
-
-            LONGLONG duration = -1;
-            if (SUCCEEDED(m_sample->GetSampleDuration(&duration)))
-                frame.setEndTime((startTime + duration) * 0.1);
-        }
-    } while (false);
-
-    if (buffer)
-        buffer->Release();
-
-    return frame;
-}
-
-QByteArray MFTransform::dataFromBuffer(IMFMediaBuffer *buffer, int height, int *bytesPerLine)
-{
-    QByteArray array;
-    BYTE *bytes;
-    DWORD length;
-    HRESULT hr = buffer->Lock(&bytes, NULL, &length);
-    if (SUCCEEDED(hr)) {
-        array = QByteArray((const char *)bytes, (int)length);
-        buffer->Unlock();
-    } else {
-        // try to lock as Direct3DSurface
-        IDirect3DSurface9 *surface = 0;
-        do {
-            if (FAILED(MFGetService(buffer, MR_BUFFER_SERVICE, IID_IDirect3DSurface9, (void**)&surface)))
-                break;
-
-            D3DLOCKED_RECT rect;
-            if (FAILED(surface->LockRect(&rect, NULL, D3DLOCK_READONLY)))
-                break;
-
-            if (bytesPerLine)
-                *bytesPerLine = (int)rect.Pitch;
-
-            array = QByteArray((const char *)rect.pBits, rect.Pitch * height);
-            surface->UnlockRect();
-        } while (false);
-
-        if (surface) {
-            surface->Release();
-            surface = 0;
-        }
-    }
-
-    return array;
-}
-
-bool MFTransform::isMediaTypeSupported(IMFMediaType *type)
-{
-    // If we don't have the video sink's type handler,
-    // assume it supports anything...
-    if (!m_videoSinkTypeHandler || !type)
-        return true;
-
-    return m_videoSinkTypeHandler->IsMediaTypeSupported(type, NULL) == S_OK;
-}