winrt: Add media playback service

This introduces a MediaPlayer service based on the MFEngineEx API. Only scene graph video rendering is supported at this time. The video renderer control is abstracted in order to provide a base for future video nodes which do not source their content from the MF engine. [ChangeLog] Media player support was added to the winrt backend. Change-Id: I8155a1030466ea352fad0a87d1ae97a88983760c Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
2014-08-21 10:55:10 +03:00
parent 5d04ed2a0a
commit 778b233bcd
12 changed files with 1921 additions and 1 deletions
--- a/src/plugins/winrt/qwinrtmediaplayerservice.cpp
+++ b/src/plugins/winrt/qwinrtmediaplayerservice.cpp
@@ -0,0 +1,111 @@
+/****************************************************************************
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+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
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+****************************************************************************/
+
+#include "qwinrtmediaplayerservice.h"
+#include "qwinrtmediaplayercontrol.h"
+
+#include <QtCore/qfunctions_winrt.h>
+#include <QtCore/QPointer>
+#include <QtMultimedia/QVideoRendererControl>
+
+#include <mfapi.h>
+#include <mfmediaengine.h>
+#include <wrl.h>
+
+using namespace Microsoft::WRL;
+
+QT_USE_NAMESPACE
+
+class QWinRTMediaPlayerServicePrivate
+{
+public:
+    QPointer<QWinRTMediaPlayerControl> player;
+
+    ComPtr<IMFMediaEngineClassFactory> factory;
+};
+
+QWinRTMediaPlayerService::QWinRTMediaPlayerService(QObject *parent)
+    : QMediaService(parent), d_ptr(new QWinRTMediaPlayerServicePrivate)
+{
+    Q_D(QWinRTMediaPlayerService);
+
+    d->player = Q_NULLPTR;
+
+    HRESULT hr = MFStartup(MF_VERSION);
+    Q_ASSERT(SUCCEEDED(hr));
+
+    MULTI_QI results = { &IID_IUnknown, NULL, 0 };
+    hr = CoCreateInstanceFromApp(CLSID_MFMediaEngineClassFactory, NULL,
+                                 CLSCTX_INPROC_SERVER, NULL, 1, &results);
+    Q_ASSERT(SUCCEEDED(hr));
+
+    hr = results.pItf->QueryInterface(d->factory.GetAddressOf());
+    Q_ASSERT(SUCCEEDED(hr));
+}
+
+QWinRTMediaPlayerService::~QWinRTMediaPlayerService()
+{
+    MFShutdown();
+}
+
+QMediaControl *QWinRTMediaPlayerService::requestControl(const char *name)
+{
+    Q_D(QWinRTMediaPlayerService);
+    if (qstrcmp(name, QMediaPlayerControl_iid) == 0) {
+        if (!d->player)
+            d->player = new QWinRTMediaPlayerControl(d->factory.Get(), this);
+        return d->player;
+    }
+    if (qstrcmp(name, QVideoRendererControl_iid) == 0) {
+        if (!d->player)
+            return Q_NULLPTR;
+        return d->player->videoRendererControl();
+    }
+
+    return Q_NULLPTR;
+}
+
+void QWinRTMediaPlayerService::releaseControl(QMediaControl *control)
+{
+    Q_D(QWinRTMediaPlayerService);
+    if (control == d->player)
+        d->player->deleteLater();
+}