From 2a34e88c1e1ced28e75c487cd13402e1c9cf9fa3 Mon Sep 17 00:00:00 2001
From: Michael Goddard <michael.goddard@nokia.com>
Date: Wed, 29 Jun 2011 13:38:46 +1000
Subject: Initial copy of QtMultimediaKit.

Comes from original repo, with SHA1:
2c82d5611655e5967f5c5095af50c0991c4378b2
---
 .../player/directshowaudioendpointcontrol.cpp      | 161 +++++++++++++++++++++
 1 file changed, 161 insertions(+)
 create mode 100644 src/plugins/directshow/player/directshowaudioendpointcontrol.cpp

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

diff --git a/src/plugins/directshow/player/directshowaudioendpointcontrol.cpp b/src/plugins/directshow/player/directshowaudioendpointcontrol.cpp
new file mode 100644
index 000000000..01c879732
--- /dev/null
+++ b/src/plugins/directshow/player/directshowaudioendpointcontrol.cpp
@@ -0,0 +1,161 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "directshowaudioendpointcontrol.h"
+
+#include "directshowglobal.h"
+#include "directshowplayerservice.h"
+
+DirectShowAudioEndpointControl::DirectShowAudioEndpointControl(
+        DirectShowPlayerService *service, QObject *parent)
+    : QAudioEndpointSelector(parent)
+    , m_service(service)
+    , m_bindContext(0)
+    , m_deviceEnumerator(0)
+{
+    if (CreateBindCtx(0, &m_bindContext) == S_OK) {
+        m_deviceEnumerator = com_new<ICreateDevEnum>(CLSID_SystemDeviceEnum, IID_ICreateDevEnum);
+
+        updateEndpoints();
+
+        setActiveEndpoint(m_defaultEndpoint);
+    }
+}
+
+DirectShowAudioEndpointControl::~DirectShowAudioEndpointControl()
+{
+    foreach (IMoniker *moniker, m_devices)
+        moniker->Release();
+
+    if (m_bindContext)
+        m_bindContext->Release();
+
+    if (m_deviceEnumerator)
+        m_deviceEnumerator->Release();
+}
+
+QList<QString> DirectShowAudioEndpointControl::availableEndpoints() const
+{
+    return m_devices.keys();
+}
+
+QString DirectShowAudioEndpointControl::endpointDescription(const QString &name) const
+{
+#ifdef __IPropertyBag_INTERFACE_DEFINED__
+    QString description;
+
+    if (IMoniker *moniker = m_devices.value(name, 0)) {
+        IPropertyBag *propertyBag = 0;
+        if (SUCCEEDED(moniker->BindToStorage(
+                0, 0, IID_IPropertyBag, reinterpret_cast<void **>(&propertyBag)))) {
+            VARIANT name;
+            VariantInit(&name);
+            if (SUCCEEDED(propertyBag->Read(L"FriendlyName", &name, 0)))
+                description = QString::fromWCharArray(name.bstrVal);
+            VariantClear(&name);
+            propertyBag->Release();
+        }
+    }
+
+    return description;
+#else
+    return name.section(QLatin1Char('\\'), -1);
+#endif
+}
+
+QString DirectShowAudioEndpointControl::defaultEndpoint() const
+{
+    return m_defaultEndpoint;
+}
+
+QString DirectShowAudioEndpointControl::activeEndpoint() const
+{
+    return m_activeEndpoint;
+}
+
+void DirectShowAudioEndpointControl::setActiveEndpoint(const QString &name)
+{
+    if (m_activeEndpoint == name)
+        return;
+
+    if (IMoniker *moniker = m_devices.value(name, 0)) {
+        IBaseFilter *filter = 0;
+
+        if (moniker->BindToObject(
+                m_bindContext,
+                0,
+                IID_IBaseFilter,
+                reinterpret_cast<void **>(&filter)) == S_OK) {
+            m_service->setAudioOutput(filter);
+
+            filter->Release();
+        }
+    }
+}
+
+void DirectShowAudioEndpointControl::updateEndpoints()
+{
+    IMalloc *oleMalloc = 0;
+    if (m_deviceEnumerator && CoGetMalloc(1, &oleMalloc) == S_OK) {
+        IEnumMoniker *monikers = 0;
+
+        if (m_deviceEnumerator->CreateClassEnumerator(
+                CLSID_AudioRendererCategory, &monikers, 0) == S_OK) {
+            for (IMoniker *moniker = 0; monikers->Next(1, &moniker, 0) == S_OK; moniker->Release()) {
+                OLECHAR *string = 0;
+                if (moniker->GetDisplayName(m_bindContext, 0, &string) == S_OK) {
+                    QString deviceId = QString::fromWCharArray(string);
+                    oleMalloc->Free(string);
+
+                    moniker->AddRef();
+                    m_devices.insert(deviceId, moniker);
+
+                    if (m_defaultEndpoint.isEmpty()
+                            || deviceId.endsWith(QLatin1String("Default DirectSound Device"))) {
+                        m_defaultEndpoint = deviceId;
+                    }
+                }
+            }
+            monikers->Release();
+        }
+        oleMalloc->Release();
+    }
+}
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