1 files changed, 103 insertions, 0 deletions
diff --git a/src/plugins/multimedia/windows/decoder/mfdecodersourcereader.cpp b/src/plugins/multimedia/windows/decoder/mfdecodersourcereader.cpp
new file mode 100644
index 000000000..097f83437
--- /dev/null
+++ b/src/plugins/multimedia/windows/decoder/mfdecodersourcereader.cpp
@@ -0,0 +1,103 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#include <system_error>
+#include <mferror.h>
+#include <qlogging.h>
+#include <qdebug.h>
+#include "mfdecodersourcereader_p.h"
+
+QT_BEGIN_NAMESPACE
+
+ComPtr<IMFMediaType> MFDecoderSourceReader::setSource(IMFMediaSource *source, QAudioFormat::SampleFormat sampleFormat)
+{
+    ComPtr<IMFMediaType> mediaType;
+    m_sourceReader.Reset();
+
+    if (!source)
+        return mediaType;
+
+    ComPtr<IMFAttributes> attr;
+    MFCreateAttributes(attr.GetAddressOf(), 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.GetAddressOf());
+    if (FAILED(hr)) {
+        qWarning() << "MFDecoderSourceReader: failed to set up 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);
+
+    ComPtr<IMFMediaType> pPartialType;
+    MFCreateMediaType(pPartialType.GetAddressOf());
+    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.GetAddressOf());
+    // 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) {
+        emit newSample(ComPtr<IMFSample>{pSample});
+    } else if ((dwStreamFlags & MF_SOURCE_READERF_ENDOFSTREAM) == MF_SOURCE_READERF_ENDOFSTREAM) {
+        emit finished();
+    }
+    return S_OK;
+}
+
+QT_END_NAMESPACE
+
+#include "moc_mfdecodersourcereader_p.cpp"