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>
2013-01-14 17:44:06 +01:00
parent 02add40392
commit 101c78983a
12 changed files with 3769 additions and 66 deletions
--- a/src/plugins/wmf/mfactivate.cpp
+++ b/src/plugins/wmf/mfactivate.cpp
@@ -0,0 +1,89 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "mfactivate.h"
+
+#include <mfapi.h>
+
+MFAbstractActivate::MFAbstractActivate()
+    : m_attributes(0)
+    , m_cRef(1)
+{
+    MFCreateAttributes(&m_attributes, 0);
+}
+
+MFAbstractActivate::~MFAbstractActivate()
+{
+    if (m_attributes)
+        m_attributes->Release();
+}
+
+
+HRESULT MFAbstractActivate::QueryInterface(REFIID riid, LPVOID *ppvObject)
+{
+    if (!ppvObject)
+        return E_POINTER;
+    if (riid == IID_IMFActivate) {
+        *ppvObject = static_cast<IMFActivate*>(this);
+    } else if (riid == IID_IMFAttributes) {
+        *ppvObject = static_cast<IMFAttributes*>(this);
+    } else if (riid == IID_IUnknown) {
+        *ppvObject = static_cast<IUnknown*>(static_cast<IMFActivate*>(this));
+    } else {
+        *ppvObject =  NULL;
+        return E_NOINTERFACE;
+    }
+    AddRef();
+    return S_OK;
+}
+
+ULONG MFAbstractActivate::AddRef(void)
+{
+    return InterlockedIncrement(&m_cRef);
+}
+
+ULONG MFAbstractActivate::Release(void)
+{
+    ULONG cRef = InterlockedDecrement(&m_cRef);
+    if (cRef == 0)
+        delete this;
+    return m_cRef;
+}