--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayersession.cpp Fri Apr 16 15:51:22 2010 +0300
@@ -0,0 +1,701 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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 "qgstreamerplayersession.h"
+#include "qgstreamerbushelper.h"
+
+#include "qgstreamervideorendererinterface.h"
+
+#include <gst/gstvalue.h>
+
+#include <QtCore/qdatetime.h>
+#include <QtCore/qdebug.h>
+
+#ifdef Q_WS_MAEMO_5
+#define USE_PLAYBIN2
+#endif
+
+QGstreamerPlayerSession::QGstreamerPlayerSession(QObject *parent)
+ :QObject(parent),
+ m_state(QMediaPlayer::StoppedState),
+ m_mediaStatus(QMediaPlayer::UnknownMediaStatus),
+ m_busHelper(0),
+ m_playbin(0),
+ m_nullVideoOutput(0),
+ m_bus(0),
+ m_renderer(0),
+ m_volume(100),
+ m_playbackRate(1.0),
+ m_muted(false),
+ m_audioAvailable(false),
+ m_videoAvailable(false),
+ m_seekable(false),
+ m_lastPosition(0),
+ m_duration(-1)
+{
+ static bool initialized = false;
+ if (!initialized) {
+ initialized = true;
+ gst_init(NULL, NULL);
+ }
+
+#ifdef USE_PLAYBIN2
+ m_playbin = gst_element_factory_make("playbin2", NULL);
+#else
+ m_playbin = gst_element_factory_make("playbin", NULL);
+#endif
+
+ if (m_playbin != 0) {
+ // Sort out messages
+ m_bus = gst_element_get_bus(m_playbin);
+ m_busHelper = new QGstreamerBusHelper(m_bus, this);
+ connect(m_busHelper, SIGNAL(message(QGstreamerMessage)), SLOT(busMessage(QGstreamerMessage)));
+ m_busHelper->installSyncEventFilter(this);
+
+ m_nullVideoOutput = gst_element_factory_make("fakesink", NULL);
+ g_object_set(G_OBJECT(m_playbin), "video-sink", m_nullVideoOutput, NULL);
+
+ // Initial volume
+ double volume = 1.0;
+ g_object_get(G_OBJECT(m_playbin), "volume", &volume, NULL);
+ m_volume = int(volume*100);
+ }
+}
+
+QGstreamerPlayerSession::~QGstreamerPlayerSession()
+{
+ if (m_playbin) {
+ stop();
+
+ delete m_busHelper;
+ gst_object_unref(GST_OBJECT(m_bus));
+ gst_object_unref(GST_OBJECT(m_playbin));
+ }
+}
+
+void QGstreamerPlayerSession::load(const QUrl &url)
+{
+ m_url = url;
+ if (m_playbin) {
+ m_tags.clear();
+ emit tagsChanged();
+
+ g_object_set(G_OBJECT(m_playbin), "uri", m_url.toString().toLocal8Bit().constData(), NULL);
+
+ if (!m_streamTypes.isEmpty()) {
+ m_streamProperties.clear();
+ m_streamTypes.clear();
+
+ emit streamsChanged();
+ }
+ }
+}
+
+qint64 QGstreamerPlayerSession::duration() const
+{
+ return m_duration;
+}
+
+qint64 QGstreamerPlayerSession::position() const
+{
+ GstFormat format = GST_FORMAT_TIME;
+ gint64 position = 0;
+
+ if ( m_playbin && gst_element_query_position(m_playbin, &format, &position))
+ return position / 1000000;
+ else
+ return 0;
+}
+
+qreal QGstreamerPlayerSession::playbackRate() const
+{
+ return m_playbackRate;
+}
+
+void QGstreamerPlayerSession::setPlaybackRate(qreal rate)
+{
+ if (!qFuzzyCompare(m_playbackRate, rate)) {
+ m_playbackRate = rate;
+ if (m_playbin) {
+ gst_element_seek(m_playbin, rate, GST_FORMAT_TIME,
+ GstSeekFlags(GST_SEEK_FLAG_ACCURATE | GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_SEGMENT),
+ GST_SEEK_TYPE_NONE,0,
+ GST_SEEK_TYPE_NONE,0 );
+ }
+ }
+}
+
+
+int QGstreamerPlayerSession::activeStream(QMediaStreamsControl::StreamType streamType) const
+{
+ int streamNumber = -1;
+ if (m_playbin) {
+ switch (streamType) {
+ case QMediaStreamsControl::AudioStream:
+ g_object_set(G_OBJECT(m_playbin), "current-audio", streamNumber, NULL);
+ break;
+ case QMediaStreamsControl::VideoStream:
+ g_object_set(G_OBJECT(m_playbin), "current-video", streamNumber, NULL);
+ break;
+ case QMediaStreamsControl::SubPictureStream:
+ g_object_set(G_OBJECT(m_playbin), "current-text", streamNumber, NULL);
+ break;
+ default:
+ break;
+ }
+ }
+
+#ifdef USE_PLAYBIN2
+ streamNumber += m_playbin2StreamOffset.value(streamType,0);
+#endif
+
+ return streamNumber;
+}
+
+void QGstreamerPlayerSession::setActiveStream(QMediaStreamsControl::StreamType streamType, int streamNumber)
+{
+#ifdef USE_PLAYBIN2
+ streamNumber -= m_playbin2StreamOffset.value(streamType,0);
+#endif
+
+ if (m_playbin) {
+ switch (streamType) {
+ case QMediaStreamsControl::AudioStream:
+ g_object_get(G_OBJECT(m_playbin), "current-audio", &streamNumber, NULL);
+ break;
+ case QMediaStreamsControl::VideoStream:
+ g_object_get(G_OBJECT(m_playbin), "current-video", &streamNumber, NULL);
+ break;
+ case QMediaStreamsControl::SubPictureStream:
+ g_object_get(G_OBJECT(m_playbin), "current-text", &streamNumber, NULL);
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+
+bool QGstreamerPlayerSession::isBuffering() const
+{
+ return false;
+}
+
+int QGstreamerPlayerSession::bufferingProgress() const
+{
+ return 0;
+}
+
+int QGstreamerPlayerSession::volume() const
+{
+ return m_volume;
+}
+
+bool QGstreamerPlayerSession::isMuted() const
+{
+ return m_muted;
+}
+
+bool QGstreamerPlayerSession::isAudioAvailable() const
+{
+ return m_audioAvailable;
+}
+
+void QGstreamerPlayerSession::setVideoRenderer(QObject *videoOutput)
+{
+ m_renderer = qobject_cast<QGstreamerVideoRendererInterface*>(videoOutput);
+ if (m_renderer)
+ g_object_set(G_OBJECT(m_playbin), "video-sink", m_renderer->videoSink(), NULL);
+ else
+ g_object_set(G_OBJECT(m_playbin), "video-sink", m_nullVideoOutput, NULL);
+}
+
+bool QGstreamerPlayerSession::isVideoAvailable() const
+{
+ return m_videoAvailable;
+}
+
+bool QGstreamerPlayerSession::isSeekable() const
+{
+ return m_seekable;
+}
+
+void QGstreamerPlayerSession::play()
+{
+ if (m_playbin) {
+ if (gst_element_set_state(m_playbin, GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
+ qWarning() << "GStreamer; Unable to play -" << m_url.toString();
+ m_state = QMediaPlayer::StoppedState;
+ m_mediaStatus = QMediaPlayer::InvalidMedia;
+
+ emit stateChanged(m_state);
+ emit mediaStatusChanged(m_mediaStatus);
+ }
+ }
+}
+
+void QGstreamerPlayerSession::pause()
+{
+ if (m_playbin)
+ gst_element_set_state(m_playbin, GST_STATE_PAUSED);
+}
+
+void QGstreamerPlayerSession::stop()
+{
+ if (m_playbin) {
+ gst_element_set_state(m_playbin, GST_STATE_NULL);
+
+ //we have to do it here, since gstreamer will not emit bus messages any more
+ if (m_state != QMediaPlayer::StoppedState)
+ emit stateChanged(m_state = QMediaPlayer::StoppedState);
+ }
+}
+
+void QGstreamerPlayerSession::seek(qint64 ms)
+{
+ if (m_playbin && m_state != QMediaPlayer::StoppedState) {
+ gint64 position = (gint64)ms * 1000000;
+ gst_element_seek_simple(m_playbin, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH, position);
+ }
+}
+
+void QGstreamerPlayerSession::setVolume(int volume)
+{
+ m_volume = volume;
+ emit volumeChanged(m_volume);
+
+ if (!m_muted && m_playbin)
+ g_object_set(G_OBJECT(m_playbin), "volume", m_volume/100.0, NULL);
+
+}
+
+void QGstreamerPlayerSession::setMuted(bool muted)
+{
+ m_muted = muted;
+
+ g_object_set(G_OBJECT(m_playbin), "volume", (m_muted ? 0 : m_volume/100.0), NULL);
+
+ emit mutedStateChanged(m_muted);
+}
+
+static void addTagToMap(const GstTagList *list,
+ const gchar *tag,
+ gpointer user_data)
+{
+ QMap<QByteArray, QVariant> *map = reinterpret_cast<QMap<QByteArray, QVariant>* >(user_data);
+
+ GValue val;
+ val.g_type = 0;
+ gst_tag_list_copy_value(&val,list,tag);
+
+ switch( G_VALUE_TYPE(&val) ) {
+ case G_TYPE_STRING:
+ {
+ const gchar *str_value = g_value_get_string(&val);
+ map->insert(QByteArray(tag), QString::fromUtf8(str_value));
+ break;
+ }
+ case G_TYPE_INT:
+ map->insert(QByteArray(tag), g_value_get_int(&val));
+ break;
+ case G_TYPE_UINT:
+ map->insert(QByteArray(tag), g_value_get_uint(&val));
+ break;
+ case G_TYPE_LONG:
+ map->insert(QByteArray(tag), qint64(g_value_get_long(&val)));
+ break;
+ case G_TYPE_BOOLEAN:
+ map->insert(QByteArray(tag), g_value_get_boolean(&val));
+ break;
+ case G_TYPE_CHAR:
+ map->insert(QByteArray(tag), g_value_get_char(&val));
+ break;
+ case G_TYPE_DOUBLE:
+ map->insert(QByteArray(tag), g_value_get_double(&val));
+ break;
+ default:
+ // GST_TYPE_DATE is a function, not a constant, so pull it out of the switch
+ if (G_VALUE_TYPE(&val) == GST_TYPE_DATE) {
+ const GDate *date = gst_value_get_date(&val);
+ if (g_date_valid(date)) {
+ int year = g_date_get_year(date);
+ int month = g_date_get_month(date);
+ int day = g_date_get_day(date);
+ map->insert(QByteArray(tag), QDate(year,month,day));
+ if (!map->contains("year"))
+ map->insert("year", year);
+ }
+ } else if (G_VALUE_TYPE(&val) == GST_TYPE_FRACTION) {
+ int nom = gst_value_get_fraction_numerator(&val);
+ int denom = gst_value_get_fraction_denominator(&val);
+
+ if (denom > 0) {
+ map->insert(QByteArray(tag), double(nom)/denom);
+ }
+ }
+ break;
+ }
+
+ g_value_unset(&val);
+}
+
+void QGstreamerPlayerSession::setSeekable(bool seekable)
+{
+ if (seekable != m_seekable) {
+ m_seekable = seekable;
+ emit seekableChanged(m_seekable);
+ }
+}
+
+void QGstreamerPlayerSession::setMediaStatus(QMediaPlayer::MediaStatus status)
+{
+ if (m_mediaStatus != status) {
+ m_mediaStatus = status;
+ emit mediaStatusChanged(status);
+ }
+}
+
+bool QGstreamerPlayerSession::processSyncMessage(const QGstreamerMessage &message)
+{
+ GstMessage* gm = message.rawMessage();
+
+ if (gm &&
+ GST_MESSAGE_TYPE(gm) == GST_MESSAGE_ELEMENT &&
+ gst_structure_has_name(gm->structure, "prepare-xwindow-id"))
+ {
+ if (m_renderer)
+ m_renderer->precessNewStream();
+ return true;
+ }
+
+ return false;
+}
+
+void QGstreamerPlayerSession::busMessage(const QGstreamerMessage &message)
+{
+ GstMessage* gm = message.rawMessage();
+
+ if (gm == 0) {
+ // Null message, query current position
+ quint32 newPos = position();
+
+ if (newPos/1000 != m_lastPosition) {
+ m_lastPosition = newPos/1000;
+ emit positionChanged(newPos);
+ }
+
+ } else {
+ //tag message comes from elements inside playbin, not from playbin itself
+ if (GST_MESSAGE_TYPE(gm) == GST_MESSAGE_TAG) {
+ //qDebug() << "tag message";
+ GstTagList *tag_list;
+ gst_message_parse_tag(gm, &tag_list);
+ gst_tag_list_foreach(tag_list, addTagToMap, &m_tags);
+
+ //qDebug() << m_tags;
+
+ emit tagsChanged();
+ }
+
+ if (GST_MESSAGE_SRC(gm) == GST_OBJECT_CAST(m_playbin)) {
+ switch (GST_MESSAGE_TYPE(gm)) {
+ case GST_MESSAGE_DURATION:
+ break;
+
+ case GST_MESSAGE_STATE_CHANGED:
+ {
+ GstState oldState;
+ GstState newState;
+ GstState pending;
+
+ gst_message_parse_state_changed(gm, &oldState, &newState, &pending);
+
+ /*QStringList states;
+ states << "GST_STATE_VOID_PENDING" << "GST_STATE_NULL" << "GST_STATE_READY" << "GST_STATE_PAUSED" << "GST_STATE_PLAYING";
+
+ qDebug() << QString("state changed: old: %1 new: %2 pending: %3") \
+ .arg(states[oldState]) \
+ .arg(states[newState]) \
+ .arg(states[pending]);*/
+
+ switch (newState) {
+ case GST_STATE_VOID_PENDING:
+ case GST_STATE_NULL:
+ setMediaStatus(QMediaPlayer::UnknownMediaStatus);
+ setSeekable(false);
+ if (m_state != QMediaPlayer::StoppedState)
+ emit stateChanged(m_state = QMediaPlayer::StoppedState);
+ break;
+ case GST_STATE_READY:
+ setMediaStatus(QMediaPlayer::LoadedMedia);
+ setSeekable(false);
+ if (m_state != QMediaPlayer::StoppedState)
+ emit stateChanged(m_state = QMediaPlayer::StoppedState);
+ break;
+ case GST_STATE_PAUSED:
+ //don't emit state changes for intermediate states
+ if (m_state != QMediaPlayer::PausedState && pending == GST_STATE_VOID_PENDING)
+ emit stateChanged(m_state = QMediaPlayer::PausedState);
+
+ setMediaStatus(QMediaPlayer::LoadedMedia);
+
+ //check for seekable
+ if (oldState == GST_STATE_READY) {
+ /*
+ //gst_element_seek_simple doesn't work reliably here, have to find a better solution
+
+ GstFormat format = GST_FORMAT_TIME;
+ gint64 position = 0;
+ bool seekable = false;
+ if (gst_element_query_position(m_playbin, &format, &position)) {
+ seekable = gst_element_seek_simple(m_playbin, format, GST_SEEK_FLAG_NONE, position);
+ }
+
+ setSeekable(seekable);
+ */
+
+ setSeekable(true);
+
+ if (!qFuzzyCompare(m_playbackRate, qreal(1.0)))
+ setPlaybackRate(m_playbackRate);
+
+ if (m_renderer)
+ m_renderer->precessNewStream();
+
+ }
+
+
+ break;
+ case GST_STATE_PLAYING:
+ if (oldState == GST_STATE_PAUSED)
+ getStreamsInfo();
+
+ if (m_state != QMediaPlayer::PlayingState)
+ emit stateChanged(m_state = QMediaPlayer::PlayingState);
+ break;
+ }
+ }
+ break;
+
+ case GST_MESSAGE_EOS:
+ if (m_state != QMediaPlayer::StoppedState)
+ emit stateChanged(m_state = QMediaPlayer::StoppedState);
+
+ setMediaStatus(QMediaPlayer::EndOfMedia);
+
+ emit playbackFinished();
+ break;
+
+ case GST_MESSAGE_TAG:
+ case GST_MESSAGE_STREAM_STATUS:
+ case GST_MESSAGE_UNKNOWN:
+ case GST_MESSAGE_ERROR:
+ case GST_MESSAGE_WARNING:
+ case GST_MESSAGE_INFO:
+ break;
+ case GST_MESSAGE_BUFFERING:
+ setMediaStatus(QMediaPlayer::BufferingMedia);
+ break;
+ case GST_MESSAGE_STATE_DIRTY:
+ case GST_MESSAGE_STEP_DONE:
+ case GST_MESSAGE_CLOCK_PROVIDE:
+ case GST_MESSAGE_CLOCK_LOST:
+ case GST_MESSAGE_NEW_CLOCK:
+ case GST_MESSAGE_STRUCTURE_CHANGE:
+ case GST_MESSAGE_APPLICATION:
+ case GST_MESSAGE_ELEMENT:
+ case GST_MESSAGE_SEGMENT_START:
+ case GST_MESSAGE_SEGMENT_DONE:
+ case GST_MESSAGE_LATENCY:
+#if (GST_VERSION_MAJOR >= 0) && (GST_VERSION_MINOR >= 10) && (GST_VERSION_MICRO >= 13)
+ case GST_MESSAGE_ASYNC_START:
+ case GST_MESSAGE_ASYNC_DONE:
+#if GST_VERSION_MICRO >= 23
+ case GST_MESSAGE_REQUEST_STATE:
+#endif
+#endif
+ case GST_MESSAGE_ANY:
+ break;
+ }
+ }
+ }
+}
+
+void QGstreamerPlayerSession::getStreamsInfo()
+{
+ GstFormat format = GST_FORMAT_TIME;
+ gint64 duration = 0;
+
+ if (gst_element_query_duration(m_playbin, &format, &duration)) {
+ int newDuration = duration / 1000000;
+ if (m_duration != newDuration) {
+ m_duration = newDuration;
+ emit durationChanged(m_duration);
+ }
+ }
+
+ //check if video is available:
+ bool haveAudio = false;
+ bool haveVideo = false;
+ m_streamProperties.clear();
+ m_streamTypes.clear();
+
+#ifdef USE_PLAYBIN2
+ gint audioStreamsCount = 0;
+ gint videoStreamsCount = 0;
+ gint textStreamsCount = 0;
+
+ g_object_get(G_OBJECT(m_playbin), "n-audio", &audioStreamsCount, NULL);
+ g_object_get(G_OBJECT(m_playbin), "n-video", &videoStreamsCount, NULL);
+ g_object_get(G_OBJECT(m_playbin), "n-text", &textStreamsCount, NULL);
+
+ haveAudio = audioStreamsCount > 0;
+ haveVideo = videoStreamsCount > 0;
+
+ m_playbin2StreamOffset[QMediaStreamsControl::AudioStream] = 0;
+ m_playbin2StreamOffset[QMediaStreamsControl::VideoStream] = audioStreamsCount;
+ m_playbin2StreamOffset[QMediaStreamsControl::SubPictureStream] = audioStreamsCount+videoStreamsCount;
+
+ for (int i=0; i<audioStreamsCount; i++)
+ m_streamTypes.append(QMediaStreamsControl::AudioStream);
+
+ for (int i=0; i<videoStreamsCount; i++)
+ m_streamTypes.append(QMediaStreamsControl::VideoStream);
+
+ for (int i=0; i<textStreamsCount; i++)
+ m_streamTypes.append(QMediaStreamsControl::SubPictureStream);
+
+ for (int i=0; i<m_streamTypes.count(); i++) {
+ QMediaStreamsControl::StreamType streamType = m_streamTypes[i];
+ QMap<QtMedia::MetaData, QVariant> streamProperties;
+
+ int streamIndex = i - m_playbin2StreamOffset[streamType];
+
+ GstTagList *tags = 0;
+ switch (streamType) {
+ case QMediaStreamsControl::AudioStream:
+ g_signal_emit_by_name(G_OBJECT(m_playbin), "get-audio-tags", streamIndex, &tags);
+ break;
+ case QMediaStreamsControl::VideoStream:
+ g_signal_emit_by_name(G_OBJECT(m_playbin), "get-video-tags", streamIndex, &tags);
+ break;
+ case QMediaStreamsControl::SubPictureStream:
+ g_signal_emit_by_name(G_OBJECT(m_playbin), "get-text-tags", streamIndex, &tags);
+ break;
+ default:
+ break;
+ }
+
+ if (tags && gst_is_tag_list(tags)) {
+ gchar *languageCode = 0;
+ if (gst_tag_list_get_string(tags, GST_TAG_LANGUAGE_CODE, &languageCode))
+ streamProperties[QtMedia::Language] = QString::fromUtf8(languageCode);
+
+ //qDebug() << "language for setream" << i << QString::fromUtf8(languageCode);
+ g_free (languageCode);
+ }
+
+ m_streamProperties.append(streamProperties);
+ }
+
+#else
+ enum {
+ GST_STREAM_TYPE_UNKNOWN,
+ GST_STREAM_TYPE_AUDIO,
+ GST_STREAM_TYPE_VIDEO,
+ GST_STREAM_TYPE_TEXT,
+ GST_STREAM_TYPE_SUBPICTURE,
+ GST_STREAM_TYPE_ELEMENT
+ };
+
+ GList* streamInfo;
+ g_object_get(G_OBJECT(m_playbin), "stream-info", &streamInfo, NULL);
+
+ for (; streamInfo != 0; streamInfo = g_list_next(streamInfo)) {
+ gint type;
+ gchar *languageCode = 0;
+
+ GObject* obj = G_OBJECT(streamInfo->data);
+
+ g_object_get(obj, "type", &type, NULL);
+ g_object_get(obj, "language-code", &languageCode, NULL);
+
+ if (type == GST_STREAM_TYPE_VIDEO)
+ haveVideo = true;
+
+ QMediaStreamsControl::StreamType streamType = QMediaStreamsControl::UnknownStream;
+
+ switch (type) {
+ case GST_STREAM_TYPE_VIDEO:
+ streamType = QMediaStreamsControl::VideoStream;
+ haveVideo = true;
+ break;
+ case GST_STREAM_TYPE_AUDIO:
+ streamType = QMediaStreamsControl::AudioStream;
+ haveAudio = true;
+ break;
+ case GST_STREAM_TYPE_SUBPICTURE:
+ streamType = QMediaStreamsControl::SubPictureStream;
+ break;
+ default:
+ streamType = QMediaStreamsControl::UnknownStream;
+ break;
+ }
+
+ QMap<QtMedia::MetaData, QVariant> streamProperties;
+ streamProperties[QtMedia::Language] = QString::fromUtf8(languageCode);
+
+ m_streamProperties.append(streamProperties);
+ m_streamTypes.append(streamType);
+ }
+#endif
+
+ if (haveAudio != m_audioAvailable) {
+ m_audioAvailable = haveAudio;
+ emit audioAvailableChanged(m_audioAvailable);
+ }
+ if (haveVideo != m_videoAvailable) {
+ m_videoAvailable = haveVideo;
+ emit videoAvailableChanged(m_videoAvailable);
+ }
+
+ emit streamsChanged();
+}