/****************************************************************************

**

** 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 "qgstreamercaptureservice.h"

#include "qgstreamercapturesession.h"

#include "qgstreamerrecordercontrol.h"

#include "qgstreamermediacontainercontrol.h"

#include "qgstreameraudioencode.h"

#include "qgstreamervideoencode.h"

#include "qgstreamerbushelper.h"

#include "qgstreamerv4l2input.h"

#include "qgstreamercapturemetadatacontrol.h"

#include "qgstreameraudioinputendpointselector.h"

#include "qgstreamervideoinputdevicecontrol.h"

#include "qgstreamervideooverlay.h"

#include "qgstreamervideorenderer.h"

#include "qgstreamervideowidget.h"

#include <qmediaserviceprovider.h>

#include <QtCore/qdebug.h>

class QGstreamerVideoRendererWrapper : public QGstreamerElementFactory

{

public:

    QGstreamerVideoRendererWrapper(QGstreamerVideoRendererInterface *videoRenderer)

        :m_videoRenderer(videoRenderer),

         m_bin(0),

         m_element(0),

         m_colorspace(0)

    {

    }

    virtual ~QGstreamerVideoRendererWrapper()

    {

        if (m_bin)

            gst_object_unref(GST_OBJECT(m_bin));

    }

    GstElement *buildElement()

    {

#ifdef Q_WS_MAEMO_5

        return m_element = m_videoRenderer->videoSink();

#endif

        if (m_bin == NULL) {

            GstBin * bin = GST_BIN(gst_bin_new(NULL));

            m_colorspace = gst_element_factory_make("ffmpegcolorspace", NULL);

            m_element = m_videoRenderer->videoSink();

            gst_bin_add(bin, m_colorspace);

            gst_bin_add(bin, m_element);

            gst_element_link(m_colorspace, m_element);

            // add ghostpads

            GstPad *pad = gst_element_get_static_pad(m_colorspace, "sink");

            gst_element_add_pad(GST_ELEMENT(bin), gst_ghost_pad_new("sink", pad));

            gst_object_unref(GST_OBJECT(pad));

            m_bin = GST_ELEMENT(bin);

        }

        m_videoRenderer->precessNewStream();

        gst_object_ref(GST_OBJECT(m_bin));

        return m_bin;

    }

    void prepareWinId()

    {

        m_videoRenderer->precessNewStream();

    }

private:

    QGstreamerVideoRendererInterface *m_videoRenderer;

    GstElement *m_bin;

    GstElement *m_element;

    GstElement *m_colorspace;

};

QGstreamerCaptureService::QGstreamerCaptureService(const QString &service, QObject *parent):

    QMediaService(parent)

{

    static bool initialized = false;

    if (!initialized) {

        initialized = true;

        gst_init(NULL, NULL);

    }

    m_captureSession = 0;

    m_metaDataControl = 0;

    m_videoInput = 0;

    m_audioInputEndpointSelector = 0;

    m_videoInputDevice = 0;

    m_videoOutput = 0;

    m_videoRenderer = 0;

    m_videoRendererFactory = 0;

    m_videoWindow = 0;

    m_videoWindowFactory = 0;

    m_videoWidgetControl = 0;

    m_videoWidgetFactory = 0;

    if (service == Q_MEDIASERVICE_AUDIOSOURCE) {

        m_captureSession = new QGstreamerCaptureSession(QGstreamerCaptureSession::Audio, this);

    }

    bool captureVideo = false;

    if (captureVideo) {

        m_captureSession = new QGstreamerCaptureSession(QGstreamerCaptureSession::AudioAndVideo, this);        

        m_videoInput = new QGstreamerV4L2Input(this);

        m_captureSession->setVideoInput(m_videoInput);

        m_videoInputDevice = new QGstreamerVideoInputDeviceControl(this);

        connect(m_videoInputDevice, SIGNAL(selectedDeviceChanged(QString)),

                m_videoInput, SLOT(setDevice(QString)));

        if (m_videoInputDevice->deviceCount())

            m_videoInput->setDevice(m_videoInputDevice->deviceName(m_videoInputDevice->selectedDevice()));

        m_videoRenderer = new QGstreamerVideoRenderer(this);

        m_videoRendererFactory = new QGstreamerVideoRendererWrapper(m_videoRenderer);

#ifndef QT_NO_XVIDEO

        QGstreamerVideoOverlay *videoWindow = new QGstreamerVideoOverlay(this);

        m_videoWindow = videoWindow;

        m_videoWindowFactory = new QGstreamerVideoRendererWrapper(videoWindow);

        QGstreamerVideoWidgetControl *videoWidget = new QGstreamerVideoWidgetControl(this);

        m_videoWidgetControl = videoWidget;

        m_videoWidgetFactory = new QGstreamerVideoRendererWrapper(videoWidget);

#endif

    }

    if (!m_captureSession) {

        qWarning() << "Service type is not supported:" << service;

        return;

    }

    m_audioInputEndpointSelector = new QGstreamerAudioInputEndpointSelector(this);

    connect(m_audioInputEndpointSelector, SIGNAL(activeEndpointChanged(QString)), m_captureSession, SLOT(setCaptureDevice(QString)));

    if (m_captureSession && m_audioInputEndpointSelector->availableEndpoints().size() > 0)

        m_captureSession->setCaptureDevice(m_audioInputEndpointSelector->defaultEndpoint());

    m_metaDataControl = new QGstreamerCaptureMetaDataControl(this);

    connect(m_metaDataControl, SIGNAL(metaDataChanged(QMap<QByteArray,QVariant>)),

            m_captureSession, SLOT(setMetaData(QMap<QByteArray,QVariant>)));

}

QGstreamerCaptureService::~QGstreamerCaptureService()

{

}

QMediaControl *QGstreamerCaptureService::requestControl(const char *name)

{

    if (!m_captureSession)

        return 0;   

    if (qstrcmp(name,QAudioEndpointSelector_iid) == 0)

        return m_audioInputEndpointSelector;

    if (qstrcmp(name,QVideoDeviceControl_iid) == 0)

        return m_videoInputDevice;

    if (qstrcmp(name,QMediaRecorderControl_iid) == 0)

        return m_captureSession->recorderControl();

    if (qstrcmp(name,QAudioEncoderControl_iid) == 0)

        return m_captureSession->audioEncodeControl();

    if (qstrcmp(name,QVideoEncoderControl_iid) == 0)

        return m_captureSession->videoEncodeControl();

    if (qstrcmp(name,QMediaContainerControl_iid) == 0)

        return m_captureSession->mediaContainerControl();

    if (qstrcmp(name,QMetaDataWriterControl_iid) == 0)

        return m_metaDataControl;

    if (!m_videoOutput) {

        if (qstrcmp(name, QVideoRendererControl_iid) == 0) {

            m_videoOutput = m_videoRenderer;

            m_captureSession->setVideoPreview(m_videoRendererFactory);

        } else if (qstrcmp(name, QVideoWindowControl_iid) == 0) {

            m_videoOutput = m_videoWindow;

            m_captureSession->setVideoPreview(m_videoWindowFactory);

        } else if (qstrcmp(name, QVideoWidgetControl_iid) == 0) {

            m_captureSession->setVideoPreview(m_videoWidgetFactory);

            m_videoOutput = m_videoWidgetControl;

        }

        if (m_videoOutput)

            return m_videoOutput;

    }

    return 0;

}

void QGstreamerCaptureService::releaseControl(QMediaControl *control)

{

    if (control && control == m_videoOutput) {

        m_videoOutput = 0;

        m_captureSession->setVideoPreview(0);

    }

}