qtmobility/plugins/multimedia/gstreamer/mediacapture/qgstreamercaptureservice.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 23 Jun 2010 19:08:38 +0300
changeset 14 6fbed849b4f4
parent 11 06b8e2af4411
permissions -rw-r--r--
Revision: 201023 Kit: 2010125
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qgstreamercaptureservice.h"
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#include "qgstreamercapturesession.h"
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#include "qgstreamerrecordercontrol.h"
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#include "qgstreamermediacontainercontrol.h"
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#include "qgstreameraudioencode.h"
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#include "qgstreamervideoencode.h"
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#include "qgstreamerbushelper.h"
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#include "qgstreamerv4l2input.h"
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#include "qgstreamercapturemetadatacontrol.h"
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#include "qgstreameraudioinputendpointselector.h"
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#include "qgstreamervideoinputdevicecontrol.h"
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#include "qgstreamervideooverlay.h"
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#include "qgstreamervideorenderer.h"
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#include "qgstreamervideowidget.h"
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#include <qmediaserviceprovider.h>
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#include <QtCore/qdebug.h>
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class QGstreamerVideoRendererWrapper : public QGstreamerElementFactory
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{
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public:
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    QGstreamerVideoRendererWrapper(QGstreamerVideoRendererInterface *videoRenderer)
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        :m_videoRenderer(videoRenderer),
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         m_bin(0),
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         m_element(0),
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         m_colorspace(0)
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    {
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    }
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    virtual ~QGstreamerVideoRendererWrapper()
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    {
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        if (m_bin)
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            gst_object_unref(GST_OBJECT(m_bin));
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    }
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    GstElement *buildElement()
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    {
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#ifdef Q_WS_MAEMO_5
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        return m_element = m_videoRenderer->videoSink();
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#endif
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        if (m_bin == NULL) {
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            GstBin * bin = GST_BIN(gst_bin_new(NULL));
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            m_colorspace = gst_element_factory_make("ffmpegcolorspace", NULL);
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            m_element = m_videoRenderer->videoSink();
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            gst_bin_add(bin, m_colorspace);
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            gst_bin_add(bin, m_element);
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            gst_element_link(m_colorspace, m_element);
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            // add ghostpads
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            GstPad *pad = gst_element_get_static_pad(m_colorspace, "sink");
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            gst_element_add_pad(GST_ELEMENT(bin), gst_ghost_pad_new("sink", pad));
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            gst_object_unref(GST_OBJECT(pad));
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            m_bin = GST_ELEMENT(bin);
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        }
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        m_videoRenderer->precessNewStream();
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        gst_object_ref(GST_OBJECT(m_bin));
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        return m_bin;
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    }
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   110
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    void prepareWinId()
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    {
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        m_videoRenderer->precessNewStream();
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    }
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   115
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private:
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    QGstreamerVideoRendererInterface *m_videoRenderer;
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    GstElement *m_bin;
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    GstElement *m_element;
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    GstElement *m_colorspace;
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};
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   123
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   124
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QGstreamerCaptureService::QGstreamerCaptureService(const QString &service, QObject *parent):
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    QMediaService(parent)
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{
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    static bool initialized = false;
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    if (!initialized) {
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        initialized = true;
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        gst_init(NULL, NULL);
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    }
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    m_captureSession = 0;
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    m_metaDataControl = 0;
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4
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    m_videoInput = 0;
1
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    m_audioInputEndpointSelector = 0;
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    m_videoInputDevice = 0;
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    m_videoOutput = 0;
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    m_videoRenderer = 0;
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    m_videoRendererFactory = 0;
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    m_videoWindow = 0;
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    m_videoWindowFactory = 0;
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    m_videoWidgetControl = 0;
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    m_videoWidgetFactory = 0;
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    if (service == Q_MEDIASERVICE_AUDIOSOURCE) {
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        m_captureSession = new QGstreamerCaptureSession(QGstreamerCaptureSession::Audio, this);
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    }
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4
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    bool captureVideo = false;
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   154
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    if (captureVideo) {
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        m_captureSession = new QGstreamerCaptureSession(QGstreamerCaptureSession::AudioAndVideo, this);        
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        m_videoInput = new QGstreamerV4L2Input(this);
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        m_captureSession->setVideoInput(m_videoInput);
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        m_videoInputDevice = new QGstreamerVideoInputDeviceControl(this);
1
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   160
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        connect(m_videoInputDevice, SIGNAL(selectedDeviceChanged(QString)),
4
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                m_videoInput, SLOT(setDevice(QString)));
1
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   163
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        if (m_videoInputDevice->deviceCount())
4
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            m_videoInput->setDevice(m_videoInputDevice->deviceName(m_videoInputDevice->selectedDevice()));
1
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        m_videoRenderer = new QGstreamerVideoRenderer(this);
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        m_videoRendererFactory = new QGstreamerVideoRendererWrapper(m_videoRenderer);
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   169
14
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   170
#ifndef QT_NO_XVIDEO
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        QGstreamerVideoOverlay *videoWindow = new QGstreamerVideoOverlay(this);
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        m_videoWindow = videoWindow;
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        m_videoWindowFactory = new QGstreamerVideoRendererWrapper(videoWindow);
1
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14
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        QGstreamerVideoWidgetControl *videoWidget = new QGstreamerVideoWidgetControl(this);
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        m_videoWidgetControl = videoWidget;
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        m_videoWidgetFactory = new QGstreamerVideoRendererWrapper(videoWidget);
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#endif
1
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    }
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4
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    if (!m_captureSession) {
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        qWarning() << "Service type is not supported:" << service;
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        return;
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   184
    }
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1
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   186
    m_audioInputEndpointSelector = new QGstreamerAudioInputEndpointSelector(this);
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    connect(m_audioInputEndpointSelector, SIGNAL(activeEndpointChanged(QString)), m_captureSession, SLOT(setCaptureDevice(QString)));
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   188
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    if (m_captureSession && m_audioInputEndpointSelector->availableEndpoints().size() > 0)
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        m_captureSession->setCaptureDevice(m_audioInputEndpointSelector->defaultEndpoint());
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   191
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    m_metaDataControl = new QGstreamerCaptureMetaDataControl(this);
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    connect(m_metaDataControl, SIGNAL(metaDataChanged(QMap<QByteArray,QVariant>)),
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            m_captureSession, SLOT(setMetaData(QMap<QByteArray,QVariant>)));
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}
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   196
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QGstreamerCaptureService::~QGstreamerCaptureService()
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{
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}
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   200
14
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   201
QMediaControl *QGstreamerCaptureService::requestControl(const char *name)
1
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{
4
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   203
    if (!m_captureSession)
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        return 0;   
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   205
    
1
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   206
    if (qstrcmp(name,QAudioEndpointSelector_iid) == 0)
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        return m_audioInputEndpointSelector;
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   208
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    if (qstrcmp(name,QVideoDeviceControl_iid) == 0)
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        return m_videoInputDevice;
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   211
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   212
    if (qstrcmp(name,QMediaRecorderControl_iid) == 0)
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        return m_captureSession->recorderControl();
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   214
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    if (qstrcmp(name,QAudioEncoderControl_iid) == 0)
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        return m_captureSession->audioEncodeControl();
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   217
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    if (qstrcmp(name,QVideoEncoderControl_iid) == 0)
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        return m_captureSession->videoEncodeControl();
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    if (qstrcmp(name,QMediaContainerControl_iid) == 0)
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        return m_captureSession->mediaContainerControl();
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14
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    if (qstrcmp(name,QMetaDataWriterControl_iid) == 0)
1
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        return m_metaDataControl;
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14
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    if (!m_videoOutput) {
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        if (qstrcmp(name, QVideoRendererControl_iid) == 0) {
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            m_videoOutput = m_videoRenderer;
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            m_captureSession->setVideoPreview(m_videoRendererFactory);
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        } else if (qstrcmp(name, QVideoWindowControl_iid) == 0) {
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            m_videoOutput = m_videoWindow;
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            m_captureSession->setVideoPreview(m_videoWindowFactory);
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        } else if (qstrcmp(name, QVideoWidgetControl_iid) == 0) {
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            m_captureSession->setVideoPreview(m_videoWidgetFactory);
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            m_videoOutput = m_videoWidgetControl;
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        }
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        if (m_videoOutput)
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            return m_videoOutput;
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    }
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1
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    return 0;
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}
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14
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void QGstreamerCaptureService::releaseControl(QMediaControl *control)
1
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{
14
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    if (control && control == m_videoOutput) {
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        m_videoOutput = 0;
1
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        m_captureSession->setVideoPreview(0);
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    }
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}