Hi here,
I'm looking for a way to render subtitle file with video playback in
qt-mobility. I found that qt-mobility is lack of subtitle/APIs support.
Qt-mobility is using gstream playbin as the back-end of media player, but the
subtitle functions haven't been enabled.
I made a simple patch to enable gstreamer plug-in to find and render the
subtitle file which has same name as the media file automatically.
------------------------------------------------------------------------------------------------------------------------------------------------------------------
diff --git
a/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayercontrol.cpp
b/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayercontrol.cpp
index 58ba160..7510be6 100644
--- a/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayercontrol.cpp
+++ b/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayercontrol.cpp
@@ -286,7 +286,7 @@ void QGstreamerPlayerControl::setMedia(const QMediaContent
&content, QIODevice *
m_seekToStartPending = false;
QUrl url;
-
+
if (m_stream) {
if (m_stream->isReadable() && openFifo()) {
url = QUrl(QString(QLatin1String("fd://%1")).arg(m_fifoFd[0]));
@@ -296,7 +296,7 @@ void QGstreamerPlayerControl::setMedia(const QMediaContent
&content, QIODevice *
}
m_session->load(url);
-
+
if (m_fifoFd[1] >= 0) {
m_fifoCanWrite = true;
@@ -304,6 +304,20 @@ void QGstreamerPlayerControl::setMedia(const QMediaContent
&content, QIODevice *
}
if (!url.isEmpty()) {
+ QString subtitle_file = ".srt";
+ QFileInfo fi(url.toLocalFile ());
+ subtitle_file.prepend(fi.baseName());
+ subtitle_file.prepend("/");
+ subtitle_file.prepend(fi.absolutePath());
+
+ QFile file(subtitle_file);
+ if (file.exists()) {
+ subtitle_file.prepend("file://");
+ m_session->set_sub_encoding("UTF");
+ m_session->set_sub_font_desc("san bold 20");
+ m_session->load_subtitle(QUrl(subtitle_file));
+ }
+
if (m_mediaStatus != QMediaPlayer::LoadingMedia)
emit mediaStatusChanged(m_mediaStatus =
QMediaPlayer::LoadingMedia);
m_session->pause();
diff --git
a/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayersession.cpp
b/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayersession.cpp
index 942a8ba..5c6aa77 100644
--- a/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayersession.cpp
+++ b/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayersession.cpp
@@ -151,6 +151,26 @@ void QGstreamerPlayerSession::load(const QUrl &url)
}
}
+
+void QGstreamerPlayerSession::load_subtitle(const QUrl &url)
+{
+ m_url = url;
+
+ if (m_playbin)
+ g_object_set(G_OBJECT(m_playbin), "suburi",
m_url.toEncoded().constData(), NULL);
+}
+
+
+void QGstreamerPlayerSession::set_sub_encoding(const QString &encoding_String)
{
+ if (m_playbin)
+ g_object_set(G_OBJECT(m_playbin), "subtitle-encoding",
encoding_String.toLatin1().constData(), NULL);
+ }
+
+void QGstreamerPlayerSession::set_sub_font_desc(const QString
&font_desc_String) {
+ if (m_playbin)
+ g_object_set(G_OBJECT(m_playbin), "subtitle-font-desc",
font_desc_String.toLatin1().constData(), NULL);
+}
+
qint64 QGstreamerPlayerSession::duration() const
{
return m_duration;
diff --git a/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayersession.h
b/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayersession.h
index 17f17bd..9550f38 100644
--- a/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayersession.h
+++ b/plugins/multimedia/gstreamer/mediaplayer/qgstreamerplayersession.h
@@ -102,6 +102,9 @@ public:
public slots:
void load(const QUrl &url);
+ void load_subtitle(const QUrl &url);
+ void set_sub_encoding(const QString &encoding_String);
+ void set_sub_font_desc(const QString &font_desc_String);
bool play();
bool pause();
------------------------------------------------------------------------------------------------------------------------------------------------------------------
I think the right way is to let QMediaplayer support subtitle APIs like,
set_subtitle(), set_subtitle_encoding() and set_subtitle_font(), the
application could have fully control of subtitle.
Any suggestion?
Jacob
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