WMF: enabled HW-accelerated video decoding for the QML video item.
It also applies to QGraphicsVideoItem when used on a GL viewport. We now have a new video sink that is based on Microsoft's EVR sink, we just replace the default Presenter with our own. Frames are rendered into D3D surfaces using DXVA, then copied into a shared D3D/EGL surface and finally bound to a GL texture to be used by the video surface. The shared D3D/EGL surface is a feature provided by ANGLE and therefore Qt must be compiled with ANGLE for this new video sink to be compiled and used. Change-Id: I0b7b9968eed5488f9ef1a2dcca5213bd0af232ab Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
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Yoann Lopes
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The Qt Project
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130
src/plugins/wmf/evrd3dpresentengine.h
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130
src/plugins/wmf/evrd3dpresentengine.h
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/****************************************************************************
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** ensure the GNU General Public License version 3.0 requirements will be
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef EVRD3DPRESENTENGINE_H
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#define EVRD3DPRESENTENGINE_H
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#include <QObject>
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#include <EGL/egl.h>
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#include <QMutex>
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#include <d3d9types.h>
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#include <QVideoSurfaceFormat>
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struct IDirect3D9Ex;
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struct IDirect3DDevice9;
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struct IDirect3DDevice9Ex;
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struct IDirect3DDeviceManager9;
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struct IDirect3DSurface9;
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struct IDirect3DTexture9;
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struct IMFSample;
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struct IMFMediaType;
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struct IDirect3DSwapChain9;
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// Randomly generated GUIDs
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static const GUID MFSamplePresenter_SampleCounter =
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{ 0xb0bb83cc, 0xf10f, 0x4e2e, { 0xaa, 0x2b, 0x29, 0xea, 0x5e, 0x92, 0xef, 0x85 } };
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static const GUID MFSamplePresenter_SampleSwapChain =
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{ 0xad885bd1, 0x7def, 0x414a, { 0xb5, 0xb0, 0xd3, 0xd2, 0x63, 0xd6, 0xe9, 0x6d } };
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QT_BEGIN_NAMESPACE
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class QAbstractVideoSurface;
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class QOpenGLContext;
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class D3DPresentEngine : public QObject
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{
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Q_OBJECT
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public:
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D3DPresentEngine();
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virtual ~D3DPresentEngine();
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void start();
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void stop();
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HRESULT getService(REFGUID guidService, REFIID riid, void** ppv);
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HRESULT checkFormat(D3DFORMAT format);
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HRESULT createVideoSamples(IMFMediaType *format, QList<IMFSample*>& videoSampleQueue);
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void releaseResources();
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UINT refreshRate() const { return m_displayMode.RefreshRate; }
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void setSurface(QAbstractVideoSurface *surface);
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void setSurfaceFormat(const QVideoSurfaceFormat &format);
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void createOffscreenTexture();
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bool updateTexture(IDirect3DSurface9 *src);
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public Q_SLOTS:
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void presentSample(void* sample, qint64 llTarget);
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private:
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HRESULT initializeD3D();
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HRESULT getSwapChainPresentParameters(IMFMediaType *type, D3DPRESENT_PARAMETERS *pp);
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HRESULT createD3DDevice();
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HRESULT createD3DSample(IDirect3DSwapChain9 *swapChain, IMFSample **videoSample);
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QMutex m_mutex;
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UINT m_deviceResetToken;
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D3DDISPLAYMODE m_displayMode;
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IDirect3D9Ex *m_D3D9;
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IDirect3DDevice9Ex *m_device;
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IDirect3DDeviceManager9 *m_deviceManager;
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QVideoSurfaceFormat m_surfaceFormat;
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QAbstractVideoSurface *m_surface;
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QOpenGLContext *m_glContext;
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QWindow *m_offscreenSurface;
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EGLDisplay *m_eglDisplay;
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EGLConfig *m_eglConfig;
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EGLSurface m_eglSurface;
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unsigned int m_glTexture;
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IDirect3DTexture9 *m_texture;
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};
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QT_END_NAMESPACE
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#endif // EVRD3DPRESENTENGINE_H
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