From 95bd9d58d8d37ddec8d37f5b35128689c0aa55a8 Mon Sep 17 00:00:00 2001
From: Yoann Lopes <yoann.lopes@theqtcompany.com>
Date: Thu, 10 Sep 2015 18:25:37 +0200
Subject: DirectShow: use the EVR in the window control.

Reuse existing code from the WMF plugin, which already uses the EVR.
This enables HW-accelerated video decoding when using QMediaPlayer
with a QVideoWidget.

Task-number: QTBUG-45593
Change-Id: I757e4d53cd2c648aee6ba33a4851a8c6adc62843
Reviewed-by: Christian Stromme <christian.stromme@theqtcompany.com>
---
 .../directshow/player/directshowplayerservice.cpp  | 37 ++++++++++++----------
 1 file changed, 20 insertions(+), 17 deletions(-)

(limited to 'src/plugins/directshow/player/directshowplayerservice.cpp')

diff --git a/src/plugins/directshow/player/directshowplayerservice.cpp b/src/plugins/directshow/player/directshowplayerservice.cpp
index b73fa5c4c..a9b686360 100644
--- a/src/plugins/directshow/player/directshowplayerservice.cpp
+++ b/src/plugins/directshow/player/directshowplayerservice.cpp
@@ -38,8 +38,10 @@
 #include "directshowmetadatacontrol.h"
 #include "directshowplayercontrol.h"
 #include "directshowvideorenderercontrol.h"
-#if defined(HAVE_WIDGETS) && !defined(Q_WS_SIMULATOR)
 #include "vmr9videowindowcontrol.h"
+
+#ifdef HAVE_EVR
+#include "directshowevrvideowindowcontrol.h"
 #endif
 
 #ifndef QT_NO_WMSDK
@@ -79,9 +81,7 @@ DirectShowPlayerService::DirectShowPlayerService(QObject *parent)
     , m_playerControl(0)
     , m_metaDataControl(0)
     , m_videoRendererControl(0)
-#if defined(HAVE_WIDGETS) && !defined(Q_WS_SIMULATOR)
     , m_videoWindowControl(0)
-#endif
     , m_audioEndpointControl(0)
     , m_taskThread(0)
     , m_loop(qt_directShowEventLoop())
@@ -140,9 +140,7 @@ DirectShowPlayerService::~DirectShowPlayerService()
     delete m_audioEndpointControl;
     delete m_metaDataControl;
     delete m_videoRendererControl;
-#if defined(HAVE_WIDGETS) && !defined(Q_WS_SIMULATOR)
     delete m_videoWindowControl;
-#endif
 
     ::CloseHandle(m_taskHandle);
 }
@@ -156,11 +154,7 @@ QMediaControl *DirectShowPlayerService::requestControl(const char *name)
     } else if (qstrcmp(name, QMetaDataReaderControl_iid) == 0) {
         return m_metaDataControl;
     } else if (qstrcmp(name, QVideoRendererControl_iid) == 0) {
-#if defined(HAVE_WIDGETS) && !defined(Q_WS_SIMULATOR)
         if (!m_videoRendererControl && !m_videoWindowControl) {
-#else
-        if (!m_videoRendererControl) {
-#endif
             m_videoRendererControl = new DirectShowVideoRendererControl(m_loop);
 
             connect(m_videoRendererControl, SIGNAL(filterChanged()),
@@ -168,16 +162,28 @@ QMediaControl *DirectShowPlayerService::requestControl(const char *name)
 
             return m_videoRendererControl;
         }
-#if defined(HAVE_WIDGETS) && !defined(Q_WS_SIMULATOR)
     } else if (qstrcmp(name, QVideoWindowControl_iid) == 0) {
         if (!m_videoRendererControl && !m_videoWindowControl) {
-            m_videoWindowControl = new Vmr9VideoWindowControl;
+            IBaseFilter *filter;
 
-            setVideoOutput(m_videoWindowControl->filter());
+#ifdef HAVE_EVR
+            DirectShowEvrVideoWindowControl *evrControl = new DirectShowEvrVideoWindowControl;
+            if ((filter = evrControl->filter()))
+                m_videoWindowControl = evrControl;
+            else
+                delete evrControl;
+#endif
+            // Fall back to the VMR9 if the EVR is not available
+            if (!m_videoWindowControl) {
+                Vmr9VideoWindowControl *vmr9Control = new Vmr9VideoWindowControl;
+                filter = vmr9Control->filter();
+                m_videoWindowControl = vmr9Control;
+            }
+
+            setVideoOutput(filter);
 
             return m_videoWindowControl;
         }
-#endif
     }
     return 0;
 }
@@ -193,14 +199,12 @@ void DirectShowPlayerService::releaseControl(QMediaControl *control)
         delete m_videoRendererControl;
 
         m_videoRendererControl = 0;
-#if defined(HAVE_WIDGETS) && !defined(Q_WS_SIMULATOR)
     } else if (control == m_videoWindowControl) {
         setVideoOutput(0);
 
         delete m_videoWindowControl;
 
         m_videoWindowControl = 0;
-#endif
     }
 }
 
@@ -275,8 +279,7 @@ void DirectShowPlayerService::doSetUrlSource(QMutexLocker *locker)
         static const GUID iid_IFileSourceFilter = {
             0x56a868a6, 0x0ad4, 0x11ce, {0xb0, 0x3a, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70} };
 
-        if (IFileSourceFilter *fileSource = com_new<IFileSourceFilter>(
-                clsid_WMAsfReader, iid_IFileSourceFilter)) {
+        if (IFileSourceFilter *fileSource = com_new<IFileSourceFilter>(clsid_WMAsfReader, iid_IFileSourceFilter)) {
             locker->unlock();
             hr = fileSource->Load(reinterpret_cast<const OLECHAR *>(m_url.toString().utf16()), 0);
 
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