1 files changed, 152 insertions, 0 deletions
diff --git a/src/plugins/multimedia/windows/player/mfvideorenderercontrol.cpp b/src/plugins/multimedia/windows/player/mfvideorenderercontrol.cpp
new file mode 100644
index 000000000..7c79c3a8a
--- /dev/null
+++ b/src/plugins/multimedia/windows/player/mfvideorenderercontrol.cpp
@@ -0,0 +1,152 @@
+// 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 "mfvideorenderercontrol_p.h"
+#include "mfactivate_p.h"
+
+#include "evrcustompresenter_p.h"
+
+#include <private/qplatformvideosink_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class EVRCustomPresenterActivate : public MFAbstractActivate
+{
+public:
+    EVRCustomPresenterActivate(QVideoSink *sink);
+
+    STDMETHODIMP ActivateObject(REFIID riid, void **ppv) override;
+    STDMETHODIMP ShutdownObject() override;
+    STDMETHODIMP DetachObject() override;
+
+    void setSink(QVideoSink *sink);
+    void setCropRect(QRect cropRect);
+
+private:
+    // Destructor is not public. Caller should call Release.
+    ~EVRCustomPresenterActivate() override { }
+
+    EVRCustomPresenter *m_presenter;
+    QVideoSink *m_videoSink;
+    QRect m_cropRect;
+    QMutex m_mutex;
+};
+
+
+MFVideoRendererControl::MFVideoRendererControl(QObject *parent)
+    : QObject(parent)
+{
+}
+
+MFVideoRendererControl::~MFVideoRendererControl()
+{
+    releaseActivate();
+}
+
+void MFVideoRendererControl::releaseActivate()
+{
+    if (m_sink)
+        m_sink->platformVideoSink()->setVideoFrame(QVideoFrame());
+
+    if (m_presenterActivate) {
+        m_presenterActivate->ShutdownObject();
+        m_presenterActivate->Release();
+        m_presenterActivate = NULL;
+    }
+
+    if (m_currentActivate) {
+        m_currentActivate->ShutdownObject();
+        m_currentActivate->Release();
+    }
+    m_currentActivate = NULL;
+}
+
+void MFVideoRendererControl::setSink(QVideoSink *sink)
+{
+    m_sink = sink;
+
+    if (m_presenterActivate)
+        m_presenterActivate->setSink(m_sink);
+}
+
+void MFVideoRendererControl::setCropRect(const QRect &cropRect)
+{
+    if (m_presenterActivate)
+        m_presenterActivate->setCropRect(cropRect);
+}
+
+IMFActivate* MFVideoRendererControl::createActivate()
+{
+    releaseActivate();
+
+    if (m_sink) {
+        // Create the EVR media sink, but replace the presenter with our own
+        if (SUCCEEDED(MFCreateVideoRendererActivate(::GetShellWindow(), &m_currentActivate))) {
+            m_presenterActivate = new EVRCustomPresenterActivate(m_sink);
+            m_currentActivate->SetUnknown(MF_ACTIVATE_CUSTOM_VIDEO_PRESENTER_ACTIVATE, m_presenterActivate);
+        }
+    }
+
+    return m_currentActivate;
+}
+
+EVRCustomPresenterActivate::EVRCustomPresenterActivate(QVideoSink *sink)
+    : MFAbstractActivate()
+    , m_presenter(0)
+    , m_videoSink(sink)
+{ }
+
+HRESULT EVRCustomPresenterActivate::ActivateObject(REFIID riid, void **ppv)
+{
+    if (!ppv)
+        return E_INVALIDARG;
+    QMutexLocker locker(&m_mutex);
+    if (!m_presenter) {
+        m_presenter = new EVRCustomPresenter(m_videoSink);
+        m_presenter->setCropRect(m_cropRect);
+    }
+    return m_presenter->QueryInterface(riid, ppv);
+}
+
+HRESULT EVRCustomPresenterActivate::ShutdownObject()
+{
+    // The presenter does not implement IMFShutdown so
+    // this function is the same as DetachObject()
+    return DetachObject();
+}
+
+HRESULT EVRCustomPresenterActivate::DetachObject()
+{
+    QMutexLocker locker(&m_mutex);
+    if (m_presenter) {
+        m_presenter->Release();
+        m_presenter = 0;
+    }
+    return S_OK;
+}
+
+void EVRCustomPresenterActivate::setSink(QVideoSink *sink)
+{
+    QMutexLocker locker(&m_mutex);
+    if (m_videoSink == sink)
+        return;
+
+    m_videoSink = sink;
+
+    if (m_presenter)
+        m_presenter->setSink(sink);
+}
+
+void EVRCustomPresenterActivate::setCropRect(QRect cropRect)
+{
+    QMutexLocker locker(&m_mutex);
+    if (m_cropRect == cropRect)
+        return;
+
+    m_cropRect = cropRect;
+
+    if (m_presenter)
+        m_presenter->setCropRect(cropRect);
+}
+
+QT_END_NAMESPACE