--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_base/gst/playback/gstplaybin2.c Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,1872 @@
+/* GStreamer
+ * Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:element-playbin2
+ *
+ * <refsect2>
+ * <para>
+ * Playbin provides a stand-alone everything-in-one abstraction for an
+ * audio and/or video player.
+ * </para>
+ * <para>
+ * It can handle both audio and video files and features
+ * <itemizedlist>
+ * <listitem>
+ * automatic file type recognition and based on that automatic
+ * selection and usage of the right audio/video/subtitle demuxers/decoders
+ * </listitem>
+ * <listitem>
+ * visualisations for audio files
+ * </listitem>
+ * <listitem>
+ * subtitle support for video files
+ * </listitem>
+ * <listitem>
+ * stream selection between different audio/subtitles streams
+ * </listitem>
+ * <listitem>
+ * meta info (tag) extraction
+ * </listitem>
+ * <listitem>
+ * easy access to the last video frame
+ * </listitem>
+ * <listitem>
+ * buffering when playing streams over a network
+ * </listitem>
+ * <listitem>
+ * volume control
+ * </listitem>
+ * </itemizedlist>
+ * </para>
+ * <title>Usage</title>
+ * <para>
+ * A playbin element can be created just like any other element using
+ * gst_element_factory_make(). The file/URI to play should be set via the "uri"
+ * property. This must be an absolute URI, relative file paths are not allowed.
+ * Example URIs are file:///home/joe/movie.avi or http://www.joedoe.com/foo.ogg
+ * </para>
+ * <para>
+ * Playbin is a #GstPipeline. It will notify the application of everything
+ * that's happening (errors, end of stream, tags found, state changes, etc.)
+ * by posting messages on its #GstBus. The application needs to watch the
+ * bus.
+ * </para>
+ * <para>
+ * Playback can be initiated by setting the element to PLAYING state using
+ * gst_element_set_state(). Note that the state change will take place in
+ * the background in a separate thread, when the function returns playback
+ * is probably not happening yet and any errors might not have occured yet.
+ * Applications using playbin should ideally be written to deal with things
+ * completely asynchroneous.
+ * </para>
+ * <para>
+ * When playback has finished (an EOS message has been received on the bus)
+ * or an error has occured (an ERROR message has been received on the bus) or
+ * the user wants to play a different track, playbin should be set back to
+ * READY or NULL state, then the "uri" property should be set to the new
+ * location and then playbin be set to PLAYING state again.
+ * </para>
+ * <para>
+ * Seeking can be done using gst_element_seek_simple() or gst_element_seek()
+ * on the playbin element. Again, the seek will not be executed
+ * instantaneously, but will be done in a background thread. When the seek
+ * call returns the seek will most likely still be in process. An application
+ * may wait for the seek to finish (or fail) using gst_element_get_state() with
+ * -1 as the timeout, but this will block the user interface and is not
+ * recommended at all.
+ * </para>
+ * <para>
+ * Applications may query the current position and duration of the stream
+ * via gst_element_query_position() and gst_element_query_duration() and
+ * setting the format passed to GST_FORMAT_TIME. If the query was successful,
+ * the duration or position will have been returned in units of nanoseconds.
+ * </para>
+ * <title>Advanced Usage: specifying the audio and video sink</title>
+ * <para>
+ * By default, if no audio sink or video sink has been specified via the
+ * "audio-sink" or "video-sink" property, playbin will use the autoaudiosink
+ * and autovideosink elements to find the first-best available output method.
+ * This should work in most cases, but is not always desirable. Often either
+ * the user or application might want to specify more explicitly what to use
+ * for audio and video output.
+ * </para>
+ * <para>
+ * If the application wants more control over how audio or video should be
+ * output, it may create the audio/video sink elements itself (for example
+ * using gst_element_factory_make()) and provide them to playbin using the
+ * "audio-sink" or "video-sink" property.
+ * </para>
+ * <para>
+ * GNOME-based applications, for example, will usually want to create
+ * gconfaudiosink and gconfvideosink elements and make playbin use those,
+ * so that output happens to whatever the user has configured in the GNOME
+ * Multimedia System Selector confinguration dialog.
+ * </para>
+ * <para>
+ * The sink elements do not necessarily need to be ready-made sinks. It is
+ * possible to create container elements that look like a sink to playbin,
+ * but in reality contain a number of custom elements linked together. This
+ * can be achieved by creating a #GstBin and putting elements in there and
+ * linking them, and then creating a sink #GstGhostPad for the bin and pointing
+ * it to the sink pad of the first element within the bin. This can be used
+ * for a number of purposes, for example to force output to a particular
+ * format or to modify or observe the data before it is output.
+ * </para>
+ * <para>
+ * It is also possible to 'suppress' audio and/or video output by using
+ * 'fakesink' elements (or capture it from there using the fakesink element's
+ * "handoff" signal, which, nota bene, is fired from the streaming thread!).
+ * </para>
+ * <title>Retrieving Tags and Other Meta Data</title>
+ * <para>
+ * Most of the common meta data (artist, title, etc.) can be retrieved by
+ * watching for TAG messages on the pipeline's bus (see above).
+ * </para>
+ * <para>
+ * Other more specific meta information like width/height/framerate of video
+ * streams or samplerate/number of channels of audio streams can be obtained
+ * using the "stream-info" property, which will return a GList of stream info
+ * objects, one for each stream. These are opaque objects that can only be
+ * accessed via the standard GObject property interface, ie. g_object_get().
+ * Each stream info object has the following properties:
+ * <itemizedlist>
+ * <listitem>"object" (GstObject) (the decoder source pad usually)</listitem>
+ * <listitem>"type" (enum) (if this is an audio/video/subtitle stream)</listitem>
+ * <listitem>"decoder" (string) (name of decoder used to decode this stream)</listitem>
+ * <listitem>"mute" (boolean) (to mute or unmute this stream)</listitem>
+ * <listitem>"caps" (GstCaps) (caps of the decoded stream)</listitem>
+ * <listitem>"language-code" (string) (ISO-639 language code for this stream, mostly used for audio/subtitle streams)</listitem>
+ * <listitem>"codec" (string) (format this stream was encoded in)</listitem>
+ * </itemizedlist>
+ * Stream information from the stream-info properties is best queried once
+ * playbin has changed into PAUSED or PLAYING state (which can be detected
+ * via a state-changed message on the bus where old_state=READY and
+ * new_state=PAUSED), since before that the list might not be complete yet or
+ * not contain all available information (like language-codes).
+ * </para>
+ * <title>Buffering</title>
+ * <para>
+ * Playbin handles buffering automatically for the most part, but applications
+ * need to handle parts of the buffering process as well. Whenever playbin is
+ * buffering, it will post BUFFERING messages on the bus with a percentage
+ * value that shows the progress of the buffering process. Applications need
+ * to set playbin to PLAYING or PAUSED state in response to these messages.
+ * They may also want to convey the buffering progress to the user in some
+ * way. Here is how to extract the percentage information from the message
+ * (requires GStreamer >= 0.10.11):
+ * </para>
+ * <para>
+ * <programlisting>
+ * switch (GST_MESSAGE_TYPE (msg)) {
+ * case GST_MESSAGE_BUFFERING: {
+ * gint percent = 0;
+ * gst_message_parse_buffering (msg, &percent);
+ * g_print ("Buffering (%%u percent done)", percent);
+ * break;
+ * }
+ * ...
+ * }
+ * </programlisting>
+ * Note that applications should keep/set the pipeline in the PAUSED state when
+ * a BUFFERING message is received with a buffer percent value < 100 and set
+ * the pipeline back to PLAYING state when a BUFFERING message with a value
+ * of 100 percent is received (if PLAYING is the desired state, that is).
+ * </para>
+ * <title>Embedding the video window in your application</title>
+ * <para>
+ * By default, playbin (or rather the video sinks used) will create their own
+ * window. Applications will usually want to force output to a window of their
+ * own, however. This can be done using the GstXOverlay interface, which most
+ * video sinks implement. See the documentation there for more details.
+ * </para>
+ * <title>Specifying which CD/DVD device to use</title>
+ * <para>
+ * The device to use for CDs/DVDs needs to be set on the source element
+ * playbin creates before it is opened. The only way to do this at the moment
+ * is to connect to playbin's "notify::source" signal, which will be emitted
+ * by playbin when it has created the source element for a particular URI.
+ * In the signal callback you can check if the source element has a "device"
+ * property and set it appropriately. In future ways might be added to specify
+ * the device as part of the URI, but at the time of writing this is not
+ * possible yet.
+ * </para>
+ * <title>Examples</title>
+ * <para>
+ * Here is a simple pipeline to play back a video or audio file:
+ * <programlisting>
+ * gst-launch -v playbin uri=file:///path/to/somefile.avi
+ * </programlisting>
+ * This will play back the given AVI video file, given that the video and
+ * audio decoders required to decode the content are installed. Since no
+ * special audio sink or video sink is supplied (not possible via gst-launch),
+ * playbin will try to find a suitable audio and video sink automatically
+ * using the autoaudiosink and autovideosink elements.
+ * </para>
+ * <para>
+ * Here is a another pipeline to play track 4 of an audio CD:
+ * <programlisting>
+ * gst-launch -v playbin uri=cdda://4
+ * </programlisting>
+ * This will play back track 4 on an audio CD in your disc drive (assuming
+ * the drive is detected automatically by the plugin).
+ * </para>
+ * <para>
+ * Here is a another pipeline to play title 1 of a DVD:
+ * <programlisting>
+ * gst-launch -v playbin uri=dvd://1
+ * </programlisting>
+ * This will play back title 1 of a DVD in your disc drive (assuming
+ * the drive is detected automatically by the plugin).
+ * </para>
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+#include <gst/gst.h>
+
+#include <gst/gst-i18n-plugin.h>
+#include <gst/pbutils/pbutils.h>
+
+#include "gstplay-enum.h"
+#include "gstplay-marshal.h"
+#include "gstplaysink.h"
+#include "gstfactorylists.h"
+#include "gstscreenshot.h"
+#include "gststreaminfo.h"
+#include "gststreamselector.h"
+
+#ifdef __SYMBIAN32__
+#include <glib_global.h>
+#endif
+GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
+#define GST_CAT_DEFAULT gst_play_bin_debug
+
+#define GST_TYPE_PLAY_BIN (gst_play_bin_get_type())
+#define GST_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAY_BIN,GstPlayBin))
+#define GST_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAY_BIN,GstPlayBinClass))
+#define GST_IS_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAY_BIN))
+#define GST_IS_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLAY_BIN))
+
+#define VOLUME_MAX_DOUBLE 10.0
+
+typedef struct _GstPlayBin GstPlayBin;
+typedef struct _GstPlayBinClass GstPlayBinClass;
+typedef struct _GstSourceGroup GstSourceGroup;
+typedef struct _GstSourceSelect GstSourceSelect;
+
+/* has the info for a selector and provides the link to the sink */
+struct _GstSourceSelect
+{
+ const gchar *media; /* the media type of the selector */
+ GstPlaySinkType type; /* the sink pad type of the selector */
+
+ GstElement *selector; /* the selector */
+ GPtrArray *channels;
+ GstPad *srcpad; /* the source pad of the selector */
+ GstPad *sinkpad; /* the sinkpad of the sink when the selector is linked */
+};
+
+/* a structure to hold the objects for decoding a uri and the subtitle uri
+ */
+struct _GstSourceGroup
+{
+ GstPlayBin *playbin;
+
+ gboolean valid; /* the group has valid info to start playback */
+ gboolean active; /* the group is active */
+
+ /* properties */
+ gchar *uri;
+ gchar *suburi;
+ GValueArray *streaminfo;
+ GstElement *source;
+ gchar *subencoding; /* encoding to propagate to the subtitle elements */
+
+ GPtrArray *video_channels; /* links to selector pads */
+ GPtrArray *audio_channels; /* links to selector pads */
+ GPtrArray *text_channels; /* links to selector pads */
+
+ /* uridecodebins for uri and subtitle uri */
+ GstElement *uridecodebin;
+ GstElement *suburidecodebin;
+
+ /* selectors for different streams */
+ GstSourceSelect selector[GST_PLAY_SINK_TYPE_LAST];
+};
+
+struct _GstPlayBin
+{
+ GstPipeline parent;
+
+ /* the groups, we use a double buffer to switch between current and next */
+ GstSourceGroup groups[2]; /* array with group info */
+ GstSourceGroup *curr_group; /* pointer to the currently playing group */
+ GstSourceGroup *next_group; /* pointer to the next group */
+
+ gboolean about_to_finish; /* the about-to-finish signal is emited */
+
+ /* properties */
+ guint connection_speed; /* connection speed in bits/sec (0 = unknown) */
+ gint current_video; /* the currently selected stream */
+ gint current_audio; /* the currently selected stream */
+ gint current_text; /* the currently selected stream */
+
+ /* our play sink */
+ GstPlaySink *playsink;
+
+ GValueArray *elements; /* factories we can use for selecting elements */
+};
+
+struct _GstPlayBinClass
+{
+ GstPipelineClass parent_class;
+
+ /* notify app that the current uri finished decoding and it is possible to
+ * queue a new one for gapless playback */
+ void (*about_to_finish) (GstPlayBin * playbin);
+
+ /* notify app that number of audio/video/text streams changed */
+ void (*video_changed) (GstPlayBin * playbin);
+ void (*audio_changed) (GstPlayBin * playbin);
+ void (*text_changed) (GstPlayBin * playbin);
+
+ /* get audio/video/text tags for a stream */
+ GstTagList *(*get_video_tags) (GstPlayBin * playbin, gint stream);
+ GstTagList *(*get_audio_tags) (GstPlayBin * playbin, gint stream);
+ GstTagList *(*get_text_tags) (GstPlayBin * playbin, gint stream);
+
+ /* get the last video frame and convert it to the given caps */
+ GstBuffer *(*convert_frame) (GstPlayBin * playbin, GstCaps * caps);
+};
+
+/* props */
+#define DEFAULT_URI NULL
+#define DEFAULT_SUBURI NULL
+#define DEFAULT_SOURCE NULL
+#define DEFAULT_FLAGS GST_PLAY_FLAG_AUDIO | GST_PLAY_FLAG_VIDEO | GST_PLAY_FLAG_TEXT | \
+ GST_PLAY_FLAG_SOFT_VOLUME
+#define DEFAULT_N_VIDEO 0
+#define DEFAULT_CURRENT_VIDEO -1
+#define DEFAULT_N_AUDIO 0
+#define DEFAULT_CURRENT_AUDIO -1
+#define DEFAULT_N_TEXT 0
+#define DEFAULT_CURRENT_TEXT -1
+#define DEFAULT_SUBTITLE_ENCODING NULL
+#define DEFAULT_AUDIO_SINK NULL
+#define DEFAULT_VIDEO_SINK NULL
+#define DEFAULT_VIS_PLUGIN NULL
+#define DEFAULT_VOLUME 1.0
+#define DEFAULT_MUTE FALSE
+#define DEFAULT_FRAME NULL
+#define DEFAULT_FONT_DESC NULL
+#define DEFAULT_CONNECTION_SPEED 0
+
+enum
+{
+ PROP_0,
+ PROP_URI,
+ PROP_SUBURI,
+ PROP_SOURCE,
+ PROP_FLAGS,
+ PROP_N_VIDEO,
+ PROP_CURRENT_VIDEO,
+ PROP_N_AUDIO,
+ PROP_CURRENT_AUDIO,
+ PROP_N_TEXT,
+ PROP_CURRENT_TEXT,
+ PROP_SUBTITLE_ENCODING,
+ PROP_AUDIO_SINK,
+ PROP_VIDEO_SINK,
+ PROP_VIS_PLUGIN,
+ PROP_VOLUME,
+ PROP_MUTE,
+ PROP_FRAME,
+ PROP_FONT_DESC,
+ PROP_CONNECTION_SPEED
+};
+
+/* signals */
+enum
+{
+ SIGNAL_ABOUT_TO_FINISH,
+ SIGNAL_VIDEO_CHANGED,
+ SIGNAL_AUDIO_CHANGED,
+ SIGNAL_TEXT_CHANGED,
+ SIGNAL_GET_VIDEO_TAGS,
+ SIGNAL_GET_AUDIO_TAGS,
+ SIGNAL_GET_TEXT_TAGS,
+ LAST_SIGNAL
+};
+
+static void gst_play_bin_class_init (GstPlayBinClass * klass);
+static void gst_play_bin_init (GstPlayBin * playbin);
+static void gst_play_bin_finalize (GObject * object);
+
+static void gst_play_bin_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * spec);
+static void gst_play_bin_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * spec);
+
+static GstStateChangeReturn gst_play_bin_change_state (GstElement * element,
+ GstStateChange transition);
+
+static void gst_play_bin_handle_message (GstBin * bin, GstMessage * message);
+
+static GstTagList *gst_play_bin_get_video_tags (GstPlayBin * playbin,
+ gint stream);
+static GstTagList *gst_play_bin_get_audio_tags (GstPlayBin * playbin,
+ gint stream);
+static GstTagList *gst_play_bin_get_text_tags (GstPlayBin * playbin,
+ gint stream);
+
+static GstBuffer *gst_play_bin_convert_frame (GstPlayBin * playbin,
+ GstCaps * caps);
+
+static gboolean setup_next_source (GstPlayBin * playbin);
+
+static GstElementClass *parent_class;
+
+static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
+
+static const GstElementDetails gst_play_bin_details =
+GST_ELEMENT_DETAILS ("Player Bin 2",
+ "Generic/Bin/Player",
+ "Autoplug and play media from an uri",
+ "Wim Taymans <wim.taymans@gmail.com>");
+
+static void
+gst_play_marshal_BUFFER__BOXED (GClosure * closure,
+ GValue * return_value G_GNUC_UNUSED,
+ guint n_param_values,
+ const GValue * param_values,
+ gpointer invocation_hint G_GNUC_UNUSED, gpointer marshal_data)
+{
+ typedef GstBuffer *(*GMarshalFunc_OBJECT__BOXED) (gpointer data1,
+ gpointer arg_1, gpointer data2);
+ register GMarshalFunc_OBJECT__BOXED callback;
+ register GCClosure *cc = (GCClosure *) closure;
+ register gpointer data1, data2;
+ GstBuffer *v_return;
+
+ g_return_if_fail (return_value != NULL);
+ g_return_if_fail (n_param_values == 2);
+
+ if (G_CCLOSURE_SWAP_DATA (closure)) {
+ data1 = closure->data;
+ data2 = g_value_peek_pointer (param_values + 0);
+ } else {
+ data1 = g_value_peek_pointer (param_values + 0);
+ data2 = closure->data;
+ }
+ callback =
+ (GMarshalFunc_OBJECT__BOXED) (marshal_data ? marshal_data : cc->callback);
+
+ v_return = callback (data1, g_value_get_boxed (param_values + 1), data2);
+
+ gst_value_take_buffer (return_value, v_return);
+}
+
+static GType
+gst_play_bin_get_type (void)
+{
+ static GType gst_play_bin_type = 0;
+
+ if (!gst_play_bin_type) {
+ static const GTypeInfo gst_play_bin_info = {
+ sizeof (GstPlayBinClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_play_bin_class_init,
+ NULL,
+ NULL,
+ sizeof (GstPlayBin),
+ 0,
+ (GInstanceInitFunc) gst_play_bin_init,
+ NULL
+ };
+
+ gst_play_bin_type = g_type_register_static (GST_TYPE_PIPELINE,
+ "GstPlayBin2", &gst_play_bin_info, 0);
+ }
+
+ return gst_play_bin_type;
+}
+
+static void
+gst_play_bin_class_init (GstPlayBinClass * klass)
+{
+ GObjectClass *gobject_klass;
+ GstElementClass *gstelement_klass;
+ GstBinClass *gstbin_klass;
+
+ gobject_klass = (GObjectClass *) klass;
+ gstelement_klass = (GstElementClass *) klass;
+ gstbin_klass = (GstBinClass *) klass;
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ gobject_klass->set_property = gst_play_bin_set_property;
+ gobject_klass->get_property = gst_play_bin_get_property;
+
+ gobject_klass->finalize = GST_DEBUG_FUNCPTR (gst_play_bin_finalize);
+
+ /**
+ * GstPlayBin:uri
+ *
+ * Set the next URI that playbin will play. This property can be set from the
+ * about-to-finish signal to queue the next media file.
+ */
+ g_object_class_install_property (gobject_klass, PROP_URI,
+ g_param_spec_string ("uri", "URI", "URI of the media to play",
+ NULL, G_PARAM_READWRITE));
+
+ /**
+ * GstPlayBin:suburi
+ *
+ * Set the next subtitle URI that playbin will play. This property can be
+ * set from the about-to-finish signal to queue the next subtitle media file.
+ */
+ g_object_class_install_property (gobject_klass, PROP_SUBURI,
+ g_param_spec_string ("suburi", ".sub-URI", "Optional URI of a subtitle",
+ NULL, G_PARAM_READWRITE));
+
+ g_object_class_install_property (gobject_klass, PROP_SOURCE,
+ g_param_spec_object ("source", "Source", "Source element",
+ GST_TYPE_ELEMENT, G_PARAM_READABLE));
+
+
+ /**
+ * GstPlayBin:flags
+ *
+ * Control the behaviour of playbin.
+ */
+ g_object_class_install_property (gobject_klass, PROP_FLAGS,
+ g_param_spec_flags ("flags", "Flags", "Flags to control behaviour",
+ GST_TYPE_PLAY_FLAGS, DEFAULT_FLAGS, G_PARAM_READWRITE));
+
+ /**
+ * GstPlayBin:n-video
+ *
+ * Get the total number of available video streams.
+ */
+ g_object_class_install_property (gobject_klass, PROP_N_VIDEO,
+ g_param_spec_int ("n-video", "Number Video",
+ "Total number of video streams", 0, G_MAXINT, 0, G_PARAM_READABLE));
+ /**
+ * GstPlayBin:current-video
+ *
+ * Get or set the currently playing video stream. By default the first video
+ * stream with data is played.
+ */
+ g_object_class_install_property (gobject_klass, PROP_CURRENT_VIDEO,
+ g_param_spec_int ("current-video", "Current Video",
+ "Currently playing video stream (-1 = auto)",
+ -1, G_MAXINT, -1, G_PARAM_READWRITE));
+ /**
+ * GstPlayBin:n-audio
+ *
+ * Get the total number of available audio streams.
+ */
+ g_object_class_install_property (gobject_klass, PROP_N_AUDIO,
+ g_param_spec_int ("n-audio", "Number Audio",
+ "Total number of audio streams", 0, G_MAXINT, 0, G_PARAM_READABLE));
+ /**
+ * GstPlayBin:current-audio
+ *
+ * Get or set the currently playing audio stream. By default the first audio
+ * stream with data is played.
+ */
+ g_object_class_install_property (gobject_klass, PROP_CURRENT_AUDIO,
+ g_param_spec_int ("current-audio", "Current audio",
+ "Currently playing audio stream (-1 = auto)",
+ -1, G_MAXINT, -1, G_PARAM_READWRITE));
+ /**
+ * GstPlayBin:n-text
+ *
+ * Get the total number of available subtitle streams.
+ */
+ g_object_class_install_property (gobject_klass, PROP_N_TEXT,
+ g_param_spec_int ("n-text", "Number Text",
+ "Total number of text streams", 0, G_MAXINT, 0, G_PARAM_READABLE));
+ /**
+ * GstPlayBin:current-text
+ *
+ * Get or set the currently playing subtitle stream. By default the first
+ * subtitle stream with data is played.
+ */
+ g_object_class_install_property (gobject_klass, PROP_CURRENT_TEXT,
+ g_param_spec_int ("current-text", "Current Text",
+ "Currently playing text stream (-1 = auto)",
+ -1, G_MAXINT, -1, G_PARAM_READWRITE));
+
+ g_object_class_install_property (gobject_klass, PROP_SUBTITLE_ENCODING,
+ g_param_spec_string ("subtitle-encoding", "subtitle encoding",
+ "Encoding to assume if input subtitles are not in UTF-8 encoding. "
+ "If not set, the GST_SUBTITLE_ENCODING environment variable will "
+ "be checked for an encoding to use. If that is not set either, "
+ "ISO-8859-15 will be assumed.", NULL, G_PARAM_READWRITE));
+
+ g_object_class_install_property (gobject_klass, PROP_VIDEO_SINK,
+ g_param_spec_object ("video-sink", "Video Sink",
+ "the video output element to use (NULL = default sink)",
+ GST_TYPE_ELEMENT, G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_klass, PROP_AUDIO_SINK,
+ g_param_spec_object ("audio-sink", "Audio Sink",
+ "the audio output element to use (NULL = default sink)",
+ GST_TYPE_ELEMENT, G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_klass, PROP_VIS_PLUGIN,
+ g_param_spec_object ("vis-plugin", "Vis plugin",
+ "the visualization element to use (NULL = none)",
+ GST_TYPE_ELEMENT, G_PARAM_READWRITE));
+
+ g_object_class_install_property (gobject_klass, PROP_VOLUME,
+ g_param_spec_double ("volume", "Volume", "The audio volume",
+ 0.0, VOLUME_MAX_DOUBLE, 1.0, G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_klass, PROP_MUTE,
+ g_param_spec_boolean ("mute", "Mute",
+ "Mute the audio channel without changing the volume", FALSE,
+ G_PARAM_READWRITE));
+
+ /**
+ * GstPlayBin::frame
+ * @playbin: a #GstPlayBin
+ *
+ * Get the currently rendered or prerolled frame in the sink.
+ * The #GstCaps on the buffer will describe the format of the buffer.
+ */
+ g_object_class_install_property (gobject_klass, PROP_FRAME,
+ gst_param_spec_mini_object ("frame", "Frame",
+ "The last frame (NULL = no video available)",
+ GST_TYPE_BUFFER, G_PARAM_READABLE));
+ g_object_class_install_property (gobject_klass, PROP_FONT_DESC,
+ g_param_spec_string ("subtitle-font-desc",
+ "Subtitle font description",
+ "Pango font description of font "
+ "to be used for subtitle rendering", NULL, G_PARAM_WRITABLE));
+
+ g_object_class_install_property (gobject_klass, PROP_CONNECTION_SPEED,
+ g_param_spec_uint ("connection-speed", "Connection Speed",
+ "Network connection speed in kbps (0 = unknown)",
+ 0, G_MAXUINT, DEFAULT_CONNECTION_SPEED, G_PARAM_READWRITE));
+ /**
+ * GstPlayBin::about-to-finish:
+ * @playbin: a #GstPlayBin
+ *
+ * This signal is emitted when the current uri is about to finish. You can
+ * set the next-uri and next-suburi to make sure that playback continues.
+ */
+ gst_play_bin_signals[SIGNAL_ABOUT_TO_FINISH] =
+ g_signal_new ("about-to-finish", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstPlayBinClass, about_to_finish), NULL, NULL,
+ gst_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
+
+ /**
+ * GstPlayBin::video-changed
+ * @playbin: a #GstPlayBin
+ *
+ * This signal is emited whenever the number or order of the video
+ * streams has changed. The application will most likely want to select
+ * a new video stream.
+ */
+ gst_play_bin_signals[SIGNAL_VIDEO_CHANGED] =
+ g_signal_new ("video-changed", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstPlayBinClass, video_changed), NULL, NULL,
+ gst_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
+ /**
+ * GstPlayBin::audio-changed
+ * @playbin: a #GstPlayBin
+ *
+ * This signal is emited whenever the number or order of the audio
+ * streams has changed. The application will most likely want to select
+ * a new audio stream.
+ */
+ gst_play_bin_signals[SIGNAL_AUDIO_CHANGED] =
+ g_signal_new ("audio-changed", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstPlayBinClass, audio_changed), NULL, NULL,
+ gst_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
+ /**
+ * GstPlayBin::text-changed
+ * @playbin: a #GstPlayBin
+ *
+ * This signal is emited whenever the number or order of the text
+ * streams has changed. The application will most likely want to select
+ * a new text stream.
+ */
+ gst_play_bin_signals[SIGNAL_TEXT_CHANGED] =
+ g_signal_new ("text-changed", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstPlayBinClass, text_changed), NULL, NULL,
+ gst_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
+
+ /**
+ * GstPlayBin::get-video-tags
+ * @playbin: a #GstPlayBin
+ * @stream: a video stream number
+ *
+ * Action signal to retrieve the tags of a specific video stream number.
+ * This information can be used to select a stream.
+ *
+ * Returns: a GstTagList with tags or NULL when the stream number does not
+ * exist.
+ */
+ gst_play_bin_signals[SIGNAL_GET_VIDEO_TAGS] =
+ g_signal_new ("get-video-tags", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+ G_STRUCT_OFFSET (GstPlayBinClass, get_video_tags), NULL, NULL,
+ gst_play_marshal_BOXED__INT, GST_TYPE_TAG_LIST, 1, G_TYPE_INT);
+ /**
+ * GstPlayBin::get-audio-tags
+ * @playbin: a #GstPlayBin
+ * @stream: an audio stream number
+ *
+ * Action signal to retrieve the tags of a specific audio stream number.
+ * This information can be used to select a stream.
+ *
+ * Returns: a GstTagList with tags or NULL when the stream number does not
+ * exist.
+ */
+ gst_play_bin_signals[SIGNAL_GET_AUDIO_TAGS] =
+ g_signal_new ("get-audio-tags", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+ G_STRUCT_OFFSET (GstPlayBinClass, get_audio_tags), NULL, NULL,
+ gst_play_marshal_BOXED__INT, GST_TYPE_TAG_LIST, 1, G_TYPE_INT);
+ /**
+ * GstPlayBin::get-text-tags
+ * @playbin: a #GstPlayBin
+ * @stream: a text stream number
+ *
+ * Action signal to retrieve the tags of a specific text stream number.
+ * This information can be used to select a stream.
+ *
+ * Returns: a GstTagList with tags or NULL when the stream number does not
+ * exist.
+ */
+ gst_play_bin_signals[SIGNAL_GET_TEXT_TAGS] =
+ g_signal_new ("get-text-tags", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+ G_STRUCT_OFFSET (GstPlayBinClass, get_text_tags), NULL, NULL,
+ gst_play_marshal_BOXED__INT, GST_TYPE_TAG_LIST, 1, G_TYPE_INT);
+ /**
+ * GstPlayBin::convert-frame
+ * @playbin: a #GstPlayBin
+ * @caps: the target format of the frame
+ *
+ * Action signal to retrieve the currently playing video frame in the format
+ * specified by @caps.
+ * If @caps is %NULL, no conversion will be performed and this function is
+ * equivalent to the #GstPlayBin::frame property.
+ *
+ * Returns: a #GstBuffer of the current video frame converted to #caps.
+ * The caps on the buffer will describe the final layout of the buffer data.
+ * %NULL is returned when no current buffer can be retrieved or when the
+ * conversion failed.
+ */
+ gst_play_bin_signals[SIGNAL_GET_TEXT_TAGS] =
+ g_signal_new ("convert-frame", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+ G_STRUCT_OFFSET (GstPlayBinClass, convert_frame), NULL, NULL,
+ gst_play_marshal_BUFFER__BOXED, GST_TYPE_BUFFER, 1, GST_TYPE_CAPS);
+
+ klass->get_video_tags = gst_play_bin_get_video_tags;
+ klass->get_audio_tags = gst_play_bin_get_audio_tags;
+ klass->get_text_tags = gst_play_bin_get_text_tags;
+
+ klass->convert_frame = gst_play_bin_convert_frame;
+
+ gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
+
+ gstelement_klass->change_state =
+ GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
+
+ gstbin_klass->handle_message =
+ GST_DEBUG_FUNCPTR (gst_play_bin_handle_message);
+}
+
+static void
+init_group (GstPlayBin * playbin, GstSourceGroup * group)
+{
+ /* store the array for the different channels */
+ group->video_channels = g_ptr_array_new ();
+ group->audio_channels = g_ptr_array_new ();
+ group->text_channels = g_ptr_array_new ();
+ /* init selectors */
+ group->playbin = playbin;
+ group->selector[0].media = "audio/x-raw-";
+ group->selector[0].type = GST_PLAY_SINK_TYPE_AUDIO_RAW;
+ group->selector[0].channels = group->audio_channels;
+ group->selector[1].media = "audio/";
+ group->selector[1].type = GST_PLAY_SINK_TYPE_AUDIO;
+ group->selector[1].channels = group->audio_channels;
+ group->selector[2].media = "video/x-raw-";
+ group->selector[2].type = GST_PLAY_SINK_TYPE_VIDEO_RAW;
+ group->selector[2].channels = group->video_channels;
+ group->selector[3].media = "video/";
+ group->selector[3].type = GST_PLAY_SINK_TYPE_VIDEO;
+ group->selector[3].channels = group->video_channels;
+ group->selector[4].media = "text/";
+ group->selector[4].type = GST_PLAY_SINK_TYPE_TEXT;
+ group->selector[4].channels = group->text_channels;
+}
+
+static void
+gst_play_bin_init (GstPlayBin * playbin)
+{
+ GstFactoryListType type;
+
+ /* init groups */
+ playbin->curr_group = &playbin->groups[0];
+ playbin->next_group = &playbin->groups[1];
+ init_group (playbin, &playbin->groups[0]);
+ init_group (playbin, &playbin->groups[1]);
+
+ /* first filter out the interesting element factories */
+ type = GST_FACTORY_LIST_DECODER | GST_FACTORY_LIST_SINK;
+ playbin->elements = gst_factory_list_get_elements (type);
+ gst_factory_list_debug (playbin->elements);
+
+ /* add sink */
+ playbin->playsink = g_object_new (GST_TYPE_PLAY_SINK, NULL);
+ gst_bin_add (GST_BIN_CAST (playbin), GST_ELEMENT_CAST (playbin->playsink));
+ gst_play_sink_set_flags (playbin->playsink, DEFAULT_FLAGS);
+
+ playbin->current_video = DEFAULT_CURRENT_VIDEO;
+ playbin->current_audio = DEFAULT_CURRENT_AUDIO;
+ playbin->current_text = DEFAULT_CURRENT_TEXT;
+}
+
+static void
+gst_play_bin_finalize (GObject * object)
+{
+ GstPlayBin *playbin;
+
+ playbin = GST_PLAY_BIN (object);
+
+ g_value_array_free (playbin->elements);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gst_play_bin_set_uri (GstPlayBin * playbin, const gchar * uri)
+{
+ GstSourceGroup *group;
+
+ if (uri == NULL) {
+ g_warning ("cannot set NULL uri");
+ return;
+ }
+
+ GST_OBJECT_LOCK (playbin);
+ group = playbin->next_group;
+
+ /* if we have no previous uri, or the new uri is different from the
+ * old one, replug */
+ g_free (group->uri);
+ group->uri = g_strdup (uri);
+ group->valid = TRUE;
+
+ GST_DEBUG ("setting new uri to %s", uri);
+ GST_OBJECT_UNLOCK (playbin);
+}
+
+static void
+gst_play_bin_set_suburi (GstPlayBin * playbin, const gchar * suburi)
+{
+ GstSourceGroup *group;
+
+ GST_OBJECT_LOCK (playbin);
+ group = playbin->next_group;
+
+ if ((!suburi && !group->suburi) ||
+ (suburi && group->suburi && !strcmp (group->suburi, suburi)))
+ goto done;
+
+ g_free (group->suburi);
+ group->suburi = g_strdup (suburi);
+
+ GST_DEBUG ("setting new .sub uri to %s", suburi);
+
+done:
+ GST_OBJECT_UNLOCK (playbin);
+}
+
+/* get the currently playing group or if nothing is playing, the next
+ * group. Must be called with the LOCK. */
+static GstSourceGroup *
+get_group (GstPlayBin * playbin)
+{
+ GstSourceGroup *result;
+
+ if (!(result = playbin->curr_group))
+ result = playbin->next_group;
+
+ return result;
+}
+
+static GstTagList *
+get_tags (GstPlayBin * playbin, GPtrArray * channels, gint stream)
+{
+ GstTagList *result;
+ GstPad *sinkpad;
+
+ if (!channels || channels->len < stream)
+ return NULL;
+
+ sinkpad = g_ptr_array_index (channels, stream);
+ g_object_get (sinkpad, "tags", &result, NULL);
+
+ return result;
+}
+
+static GstTagList *
+gst_play_bin_get_video_tags (GstPlayBin * playbin, gint stream)
+{
+ GstTagList *result;
+ GstSourceGroup *group;
+
+ GST_OBJECT_LOCK (playbin);
+ group = get_group (playbin);
+ result = get_tags (playbin, group->video_channels, stream);
+ GST_OBJECT_UNLOCK (playbin);
+
+ return result;
+}
+
+static GstTagList *
+gst_play_bin_get_audio_tags (GstPlayBin * playbin, gint stream)
+{
+ GstTagList *result;
+ GstSourceGroup *group;
+
+ GST_OBJECT_LOCK (playbin);
+ group = get_group (playbin);
+ result = get_tags (playbin, group->audio_channels, stream);
+ GST_OBJECT_UNLOCK (playbin);
+
+ return result;
+}
+
+static GstTagList *
+gst_play_bin_get_text_tags (GstPlayBin * playbin, gint stream)
+{
+ GstTagList *result;
+ GstSourceGroup *group;
+
+ GST_OBJECT_LOCK (playbin);
+ group = get_group (playbin);
+ result = get_tags (playbin, group->text_channels, stream);
+ GST_OBJECT_UNLOCK (playbin);
+
+ return result;
+}
+
+static GstBuffer *
+gst_play_bin_convert_frame (GstPlayBin * playbin, GstCaps * caps)
+{
+ GstBuffer *result;
+
+ result = gst_play_sink_get_last_frame (playbin->playsink);
+ if (result != NULL && caps != NULL) {
+ GstBuffer *temp;
+
+ temp = gst_play_frame_conv_convert (result, caps);
+ gst_buffer_unref (result);
+ result = temp;
+ }
+ return result;
+}
+
+static gboolean
+gst_play_bin_set_current_video_stream (GstPlayBin * playbin, gint stream)
+{
+ GstSourceGroup *group;
+ GPtrArray *channels;
+ GstPad *sinkpad;
+
+ GST_OBJECT_LOCK (playbin);
+ group = get_group (playbin);
+ if (!(channels = group->video_channels))
+ goto no_channels;
+
+ if (stream == -1 || channels->len < stream) {
+ sinkpad = NULL;
+ } else {
+ /* take channel from selected stream */
+ sinkpad = g_ptr_array_index (channels, stream);
+ }
+
+ if (sinkpad)
+ gst_object_ref (sinkpad);
+ GST_OBJECT_UNLOCK (playbin);
+
+ if (sinkpad) {
+ GstObject *selector;
+
+ if ((selector = gst_pad_get_parent (sinkpad))) {
+ /* activate the selected pad */
+ g_object_set (selector, "active-pad", sinkpad, NULL);
+ gst_object_unref (selector);
+ }
+ gst_object_unref (sinkpad);
+ }
+ return TRUE;
+
+no_channels:
+ {
+ GST_OBJECT_UNLOCK (playbin);
+ return FALSE;
+ }
+}
+
+static gboolean
+gst_play_bin_set_current_audio_stream (GstPlayBin * playbin, gint stream)
+{
+ GstSourceGroup *group;
+ GPtrArray *channels;
+ GstPad *sinkpad;
+
+ GST_OBJECT_LOCK (playbin);
+ group = get_group (playbin);
+ if (!(channels = group->audio_channels))
+ goto no_channels;
+
+ if (stream == -1 || channels->len < stream) {
+ sinkpad = NULL;
+ } else {
+ /* take channel from selected stream */
+ sinkpad = g_ptr_array_index (channels, stream);
+ }
+
+ if (sinkpad)
+ gst_object_ref (sinkpad);
+ GST_OBJECT_UNLOCK (playbin);
+
+ if (sinkpad) {
+ GstObject *selector;
+
+ if ((selector = gst_pad_get_parent (sinkpad))) {
+ /* activate the selected pad */
+ g_object_set (selector, "active-pad", sinkpad, NULL);
+ gst_object_unref (selector);
+ }
+ gst_object_unref (sinkpad);
+ }
+ return TRUE;
+
+no_channels:
+ {
+ GST_OBJECT_UNLOCK (playbin);
+ return FALSE;
+ }
+}
+
+static gboolean
+gst_play_bin_set_current_text_stream (GstPlayBin * playbin, gint stream)
+{
+ GstSourceGroup *group;
+ GPtrArray *channels;
+ GstPad *sinkpad;
+
+ GST_OBJECT_LOCK (playbin);
+ group = get_group (playbin);
+ if (!(channels = group->text_channels))
+ goto no_channels;
+
+ if (stream == -1 || channels->len < stream) {
+ sinkpad = NULL;
+ } else {
+ /* take channel from selected stream */
+ sinkpad = g_ptr_array_index (channels, stream);
+ }
+
+ if (sinkpad)
+ gst_object_ref (sinkpad);
+ GST_OBJECT_UNLOCK (playbin);
+
+ if (sinkpad) {
+ GstObject *selector;
+
+ if ((selector = gst_pad_get_parent (sinkpad))) {
+ /* activate the selected pad */
+ g_object_set (selector, "active-pad", sinkpad, NULL);
+ gst_object_unref (selector);
+ }
+ gst_object_unref (sinkpad);
+ }
+ return TRUE;
+
+no_channels:
+ {
+ GST_OBJECT_UNLOCK (playbin);
+ return FALSE;
+ }
+}
+
+static void
+gst_play_bin_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstPlayBin *playbin;
+
+ playbin = GST_PLAY_BIN (object);
+
+ switch (prop_id) {
+ case PROP_URI:
+ gst_play_bin_set_uri (playbin, g_value_get_string (value));
+ break;
+ case PROP_SUBURI:
+ gst_play_bin_set_suburi (playbin, g_value_get_string (value));
+ break;
+ case PROP_FLAGS:
+ gst_play_sink_set_flags (playbin->playsink, g_value_get_flags (value));
+ break;
+ case PROP_CURRENT_VIDEO:
+ gst_play_bin_set_current_video_stream (playbin, g_value_get_int (value));
+ break;
+ case PROP_CURRENT_AUDIO:
+ gst_play_bin_set_current_audio_stream (playbin, g_value_get_int (value));
+ break;
+ case PROP_CURRENT_TEXT:
+ gst_play_bin_set_current_text_stream (playbin, g_value_get_int (value));
+ break;
+ case PROP_SUBTITLE_ENCODING:
+ break;
+ case PROP_VIDEO_SINK:
+ break;
+ case PROP_AUDIO_SINK:
+ break;
+ case PROP_VIS_PLUGIN:
+ gst_play_sink_set_vis_plugin (playbin->playsink,
+ g_value_get_object (value));
+ break;
+ case PROP_VOLUME:
+ gst_play_sink_set_volume (playbin->playsink, g_value_get_double (value));
+ break;
+ case PROP_MUTE:
+ gst_play_sink_set_mute (playbin->playsink, g_value_get_boolean (value));
+ break;
+ case PROP_FONT_DESC:
+ break;
+ case PROP_CONNECTION_SPEED:
+ GST_OBJECT_LOCK (playbin);
+ playbin->connection_speed = g_value_get_uint (value) * 1000;
+ GST_OBJECT_UNLOCK (playbin);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
+ GParamSpec * pspec)
+{
+ GstPlayBin *playbin;
+
+ playbin = GST_PLAY_BIN (object);
+
+ switch (prop_id) {
+ case PROP_URI:
+ {
+ GstSourceGroup *group;
+
+ GST_OBJECT_LOCK (playbin);
+ group = get_group (playbin);
+ g_value_set_string (value, group->uri);
+ GST_OBJECT_UNLOCK (playbin);
+ break;
+ }
+ case PROP_SUBURI:
+ {
+ GstSourceGroup *group;
+
+ GST_OBJECT_LOCK (playbin);
+ group = get_group (playbin);
+ g_value_set_string (value, group->suburi);
+ GST_OBJECT_UNLOCK (playbin);
+ break;
+ }
+ case PROP_SOURCE:
+ break;
+ case PROP_FLAGS:
+ g_value_set_flags (value, gst_play_sink_get_flags (playbin->playsink));
+ break;
+ case PROP_N_VIDEO:
+ {
+ GstSourceGroup *group;
+ gint n_video;
+
+ GST_OBJECT_LOCK (playbin);
+ group = get_group (playbin);
+ n_video = (group->video_channels ? group->video_channels->len : 0);
+ g_value_set_int (value, n_video);
+ GST_OBJECT_UNLOCK (playbin);
+ break;
+ }
+ case PROP_CURRENT_VIDEO:
+ GST_OBJECT_LOCK (playbin);
+ g_value_set_int (value, playbin->current_video);
+ GST_OBJECT_UNLOCK (playbin);
+ break;
+ case PROP_N_AUDIO:
+ {
+ GstSourceGroup *group;
+ gint n_audio;
+
+ GST_OBJECT_LOCK (playbin);
+ group = get_group (playbin);
+ n_audio = (group->audio_channels ? group->audio_channels->len : 0);
+ g_value_set_int (value, n_audio);
+ GST_OBJECT_UNLOCK (playbin);
+ break;
+ }
+ case PROP_CURRENT_AUDIO:
+ GST_OBJECT_LOCK (playbin);
+ g_value_set_int (value, playbin->current_audio);
+ GST_OBJECT_UNLOCK (playbin);
+ break;
+ case PROP_N_TEXT:
+ {
+ GstSourceGroup *group;
+ gint n_text;
+
+ GST_OBJECT_LOCK (playbin);
+ group = get_group (playbin);
+ n_text = (group->text_channels ? group->text_channels->len : 0);
+ g_value_set_int (value, n_text);
+ GST_OBJECT_UNLOCK (playbin);
+ break;
+ }
+ case PROP_CURRENT_TEXT:
+ GST_OBJECT_LOCK (playbin);
+ g_value_set_int (value, playbin->current_text);
+ GST_OBJECT_UNLOCK (playbin);
+ break;
+ case PROP_SUBTITLE_ENCODING:
+ break;
+ case PROP_VIDEO_SINK:
+ break;
+ case PROP_AUDIO_SINK:
+ break;
+ case PROP_VIS_PLUGIN:
+ break;
+ case PROP_VOLUME:
+ g_value_set_double (value, gst_play_sink_get_volume (playbin->playsink));
+ break;
+ case PROP_MUTE:
+ g_value_set_boolean (value, gst_play_sink_get_mute (playbin->playsink));
+ break;
+ case PROP_FRAME:
+ gst_value_take_buffer (value, gst_play_bin_convert_frame (playbin, NULL));
+ break;
+ case PROP_FONT_DESC:
+ break;
+ case PROP_CONNECTION_SPEED:
+ GST_OBJECT_LOCK (playbin);
+ g_value_set_uint (value, playbin->connection_speed / 1000);
+ GST_OBJECT_UNLOCK (playbin);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+/* mime types we are not handling on purpose right now, don't post a
+ * missing-plugin message for these */
+static const gchar *blacklisted_mimes[] = {
+ "video/x-dvd-subpicture", NULL
+};
+
+static void
+gst_play_bin_handle_message (GstBin * bin, GstMessage * msg)
+{
+ if (gst_is_missing_plugin_message (msg)) {
+ gchar *detail;
+ guint i;
+
+ detail = gst_missing_plugin_message_get_installer_detail (msg);
+ for (i = 0; detail != NULL && blacklisted_mimes[i] != NULL; ++i) {
+ if (strstr (detail, "|decoder-") && strstr (detail, blacklisted_mimes[i])) {
+ GST_LOG_OBJECT (bin, "suppressing message %" GST_PTR_FORMAT, msg);
+ gst_message_unref (msg);
+ g_free (detail);
+ return;
+ }
+ }
+ g_free (detail);
+ }
+ GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
+}
+
+/* this function is called when a new pad is added to decodebin. We check the
+ * type of the pad and add it to the selecter element of the group.
+ */
+static void
+pad_added_cb (GstElement * decodebin, GstPad * pad, GstSourceGroup * group)
+{
+ GstPlayBin *playbin;
+ GstCaps *caps;
+ const GstStructure *s;
+ const gchar *name;
+ GstPad *sinkpad;
+ GstPadLinkReturn res;
+ GstSourceSelect *select = NULL;
+ gint i;
+
+ playbin = group->playbin;
+
+ caps = gst_pad_get_caps (pad);
+ s = gst_caps_get_structure (caps, 0);
+ name = gst_structure_get_name (s);
+
+ GST_DEBUG_OBJECT (playbin,
+ "pad %s:%s with caps %" GST_PTR_FORMAT " added in group %p",
+ GST_DEBUG_PAD_NAME (pad), caps, group);
+
+ /* major type of the pad, this determines the selector to use */
+ for (i = 0; i < GST_PLAY_SINK_TYPE_LAST; i++) {
+ if (g_str_has_prefix (name, group->selector[i].media)) {
+ select = &group->selector[i];
+ break;
+ }
+ }
+ /* no selector found for the media type, don't bother linking it to a
+ * selector. This will leave the pad unlinked and thus ignored. */
+ if (select == NULL)
+ goto unknown_type;
+
+ if (select->selector == NULL) {
+ /* no selector, create one */
+ GST_DEBUG_OBJECT (playbin, "creating new selector");
+ select->selector = g_object_new (GST_TYPE_STREAM_SELECTOR, NULL);
+ if (select->selector == NULL)
+ goto no_selector;
+
+ GST_DEBUG_OBJECT (playbin, "adding new selector %p", select->selector);
+ gst_bin_add (GST_BIN_CAST (playbin), select->selector);
+ gst_element_set_state (select->selector, GST_STATE_PAUSED);
+
+ /* save source pad */
+ select->srcpad = gst_element_get_pad (select->selector, "src");
+ }
+
+ /* get sinkpad for the new stream */
+ if ((sinkpad = gst_element_get_request_pad (select->selector, "sink%d"))) {
+ GST_DEBUG_OBJECT (playbin, "got pad %s:%s from selector",
+ GST_DEBUG_PAD_NAME (sinkpad));
+
+ /* store the selector for the pad */
+ g_object_set_data (G_OBJECT (sinkpad), "playbin2.select", select);
+
+ /* store the pad in the array */
+ GST_DEBUG_OBJECT (playbin, "pad %p added to array", sinkpad);
+ g_ptr_array_add (select->channels, sinkpad);
+
+ res = gst_pad_link (pad, sinkpad);
+ if (GST_PAD_LINK_FAILED (res))
+ goto link_failed;
+
+ /* store selector pad so we can release it */
+ g_object_set_data (G_OBJECT (pad), "playbin2.sinkpad", sinkpad);
+ }
+ GST_DEBUG_OBJECT (playbin, "linked pad %s:%s to selector %p",
+ GST_DEBUG_PAD_NAME (pad), select->selector);
+
+ return;
+
+ /* ERRORS */
+unknown_type:
+ {
+ GST_ERROR_OBJECT (playbin, "unknown type %s for pad %s:%s",
+ name, GST_DEBUG_PAD_NAME (pad));
+ return;
+ }
+no_selector:
+ {
+ GST_ERROR_OBJECT (playbin, "could not create selector for pad %s:%s",
+ GST_DEBUG_PAD_NAME (pad));
+ return;
+ }
+link_failed:
+ {
+ GST_ERROR_OBJECT (playbin,
+ "failed to link pad %s:%s to selector, reason %d",
+ GST_DEBUG_PAD_NAME (pad), res);
+ return;
+ }
+}
+
+/* called when a pad is removed form the uridecodebin. We unlink the pad from
+ * the selector. This will make the selector select a new pad. */
+static void
+pad_removed_cb (GstElement * decodebin, GstPad * pad, GstSourceGroup * group)
+{
+ GstPlayBin *playbin;
+ GstPad *peer;
+ GstElement *selector;
+ GstSourceSelect *select;
+
+ playbin = group->playbin;
+
+ GST_DEBUG_OBJECT (playbin,
+ "pad %s:%s removed from group %p", GST_DEBUG_PAD_NAME (pad), group);
+
+ /* get the selector sinkpad */
+ if (!(peer = g_object_get_data (G_OBJECT (pad), "playbin2.sinkpad")))
+ goto not_linked;
+
+ if ((select = g_object_get_data (G_OBJECT (peer), "playbin2.select"))) {
+ /* remove the pad from the array */
+ g_ptr_array_remove (select->channels, peer);
+ GST_DEBUG_OBJECT (playbin, "pad %p removed from array", peer);
+ }
+
+ /* unlink the pad now (can fail, the pad is unlinked before it's removed) */
+ gst_pad_unlink (pad, peer);
+
+ /* get selector, this can be NULL when the element is removing the pads
+ * because it's being disposed. */
+ selector = GST_ELEMENT_CAST (gst_pad_get_parent (peer));
+ if (!selector)
+ goto no_selector;
+
+ /* release the pad to the selector, this will make the selector choose a new
+ * pad. */
+ gst_element_release_request_pad (selector, peer);
+
+ gst_object_unref (selector);
+
+ return;
+
+ /* ERRORS */
+not_linked:
+ {
+ GST_DEBUG_OBJECT (playbin, "pad not linked");
+ return;
+ }
+no_selector:
+ {
+ GST_DEBUG_OBJECT (playbin, "selector not found");
+ return;
+ }
+}
+
+/* we get called when all pads are available and we must connect the sinks to
+ * them.
+ * The main purpose of the code is to see if we have video/audio and subtitles
+ * and pick the right pipelines to display them.
+ *
+ * The selectors installed on the group tell us about the presence of
+ * audio/video and subtitle streams. This allows us to see if we need
+ * visualisation, video or/and audio.
+ */
+static void
+no_more_pads_cb (GstElement * decodebin, GstSourceGroup * group)
+{
+ GstPlayBin *playbin;
+ GstPadLinkReturn res;
+ gint i;
+
+ playbin = group->playbin;
+
+ GST_DEBUG_OBJECT (playbin, "no more pads in group %p", group);
+
+ for (i = 0; i < GST_PLAY_SINK_TYPE_LAST; i++) {
+ GstSourceSelect *select = &group->selector[i];
+
+ if (select->selector) {
+ select->sinkpad =
+ gst_play_sink_request_pad (playbin->playsink, select->type);
+ res = gst_pad_link (select->srcpad, select->sinkpad);
+ GST_DEBUG_OBJECT (playbin, "linked type %s, result: %d", select->media,
+ res);
+ }
+ }
+ /* configure the modes now */
+ gst_play_sink_reconfigure (playbin->playsink);
+}
+
+/* send an EOS event to all of the selectors */
+static void
+perform_eos (GstPlayBin * playbin, GstSourceGroup * group)
+{
+ GstEvent *event;
+ gint i;
+
+ GST_DEBUG_OBJECT (playbin, "doing EOS in group %p", group);
+
+ event = gst_event_new_eos ();
+ for (i = 0; i < GST_PLAY_SINK_TYPE_LAST; i++) {
+ GstSourceSelect *select = &group->selector[i];
+
+ if (select->selector) {
+ GST_DEBUG_OBJECT (playbin, "send EOS in selector %s", select->media);
+ gst_event_ref (event);
+ gst_pad_push_event (select->srcpad, event);
+ }
+ }
+ gst_event_unref (event);
+}
+
+static void
+drained_cb (GstElement * decodebin, GstSourceGroup * group)
+{
+ GstPlayBin *playbin;
+
+ playbin = group->playbin;
+
+ GST_DEBUG_OBJECT (playbin, "about to finish in group %p", group);
+
+ /* mark use as sending out the about-to-finish signal. When the app sets a URI
+ * when this signal is emited, we're marking it as next-uri */
+ playbin->about_to_finish = TRUE;
+
+ /* after this call, we should have a next group to activate or we EOS */
+ g_signal_emit (G_OBJECT (playbin),
+ gst_play_bin_signals[SIGNAL_ABOUT_TO_FINISH], 0, NULL);
+
+ playbin->about_to_finish = FALSE;
+
+ /* now activate the next group. If the app did not set a next-uri, this will
+ * fail and we can do EOS */
+ if (!setup_next_source (playbin)) {
+ perform_eos (playbin, group);
+ }
+}
+
+/* Called when we must provide a list of factories to plug to @pad with @caps.
+ * We first check if we have a sink that can handle the format and if we do, we
+ * return NULL, to expose the pad. If we have no sink (or the sink does not
+ * work), we return the list of elements that can connect. */
+static GValueArray *
+autoplug_factories_cb (GstElement * decodebin, GstPad * pad,
+ GstCaps * caps, GstSourceGroup * group)
+{
+ GstPlayBin *playbin;
+ GValueArray *result;
+
+ playbin = group->playbin;
+
+ GST_DEBUG_OBJECT (playbin, "factories group %p for %s:%s, %" GST_PTR_FORMAT,
+ group, GST_DEBUG_PAD_NAME (pad), caps);
+
+ /* filter out the elements based on the caps. */
+ result = gst_factory_list_filter (playbin->elements, caps);
+
+ GST_DEBUG_OBJECT (playbin, "found factories %p", result);
+ gst_factory_list_debug (result);
+
+ return result;
+}
+
+/* We are asked to select an element. See if the next element to check
+ * is a sink. If this is the case, we see if the sink works by setting it to
+ * READY. If the sink works, we return -2 to make decodebin expose the raw pad
+ * so that we can setup the mixers. */
+static GstAutoplugSelectResult
+autoplug_select_cb (GstElement * decodebin, GstPad * pad,
+ GstCaps * caps, GstElementFactory * factory, GstSourceGroup * group)
+{
+ GstPlayBin *playbin;
+ GstElement *element;
+ const gchar *klass;
+
+ playbin = group->playbin;
+
+ GST_DEBUG_OBJECT (playbin, "select group %p for %s:%s, %" GST_PTR_FORMAT,
+ group, GST_DEBUG_PAD_NAME (pad), caps);
+
+ GST_DEBUG_OBJECT (playbin, "checking factory %s",
+ GST_PLUGIN_FEATURE_NAME (factory));
+
+ /* if it's not a sink, we just make decodebin try it */
+ if (!gst_factory_list_is_type (factory, GST_FACTORY_LIST_SINK))
+ return GST_AUTOPLUG_SELECT_TRY;
+
+ /* it's a sink, see if an instance of it actually works */
+ GST_DEBUG_OBJECT (playbin, "we found a sink");
+
+ if ((element = gst_element_factory_create (factory, NULL)) == NULL) {
+ GST_WARNING_OBJECT (playbin, "Could not create an element from %s",
+ gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
+ return GST_AUTOPLUG_SELECT_SKIP;
+ }
+
+ /* ... activate it ... We do this before adding it to the bin so that we
+ * don't accidentally make it post error messages that will stop
+ * everything. */
+ if ((gst_element_set_state (element,
+ GST_STATE_READY)) == GST_STATE_CHANGE_FAILURE) {
+ GST_WARNING_OBJECT (playbin, "Couldn't set %s to READY",
+ GST_ELEMENT_NAME (element));
+ gst_object_unref (element);
+ return GST_AUTOPLUG_SELECT_SKIP;
+ }
+
+ /* at this point, we have the sink working, configure it in playsink */
+ klass = gst_element_factory_get_klass (factory);
+
+ /* get klass to figure out if it's audio or video */
+ if (strstr (klass, "Audio")) {
+ GST_DEBUG_OBJECT (playbin, "configure audio sink");
+ gst_play_sink_set_audio_sink (playbin->playsink, element);
+ } else if (strstr (klass, "Video")) {
+ GST_DEBUG_OBJECT (playbin, "configure video sink");
+ gst_play_sink_set_video_sink (playbin->playsink, element);
+ } else {
+ GST_WARNING_OBJECT (playbin, "unknown sink klass %s found", klass);
+ }
+
+ /* tell decodebin to expose the pad because we are going to use this
+ * sink */
+ GST_DEBUG_OBJECT (playbin, "we found a working sink, expose pad");
+
+ return GST_AUTOPLUG_SELECT_EXPOSE;
+}
+
+static gboolean
+activate_group (GstPlayBin * playbin, GstSourceGroup * group)
+{
+ GstElement *uridecodebin;
+
+ g_return_val_if_fail (group->valid, FALSE);
+ g_return_val_if_fail (!group->active, FALSE);
+
+ if (group->uridecodebin) {
+ gst_element_set_state (group->uridecodebin, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN_CAST (playbin), group->uridecodebin);
+ group->uridecodebin = NULL;
+ }
+
+ uridecodebin = gst_element_factory_make ("uridecodebin", NULL);
+ if (!uridecodebin)
+ goto no_decodebin;
+
+ /* configure connection speed */
+ g_object_set (uridecodebin, "connection-speed", playbin->connection_speed,
+ NULL);
+ /* configure uri */
+ g_object_set (uridecodebin, "uri", group->uri, NULL);
+
+ /* connect pads and other things */
+ g_signal_connect (uridecodebin, "pad-added", G_CALLBACK (pad_added_cb),
+ group);
+ g_signal_connect (uridecodebin, "pad-removed", G_CALLBACK (pad_removed_cb),
+ group);
+ g_signal_connect (uridecodebin, "no-more-pads", G_CALLBACK (no_more_pads_cb),
+ group);
+ /* is called when the uridecodebin is out of data and we can switch to the
+ * next uri */
+ g_signal_connect (uridecodebin, "drained", G_CALLBACK (drained_cb), group);
+
+ /* will be called when a new media type is found. We return a list of decoders
+ * including sinks for decodebin to try */
+ g_signal_connect (uridecodebin, "autoplug-factories",
+ G_CALLBACK (autoplug_factories_cb), group);
+
+ g_signal_connect (uridecodebin, "autoplug-select",
+ G_CALLBACK (autoplug_select_cb), group);
+
+ /* */
+ gst_bin_add (GST_BIN_CAST (playbin), uridecodebin);
+ group->uridecodebin = uridecodebin;
+
+ gst_element_set_state (uridecodebin, GST_STATE_PAUSED);
+
+ group->active = TRUE;
+
+ return TRUE;
+
+ /* ERRORS */
+no_decodebin:
+ {
+ return FALSE;
+ }
+}
+
+/* unlink a group of uridecodebins from the sink */
+static gboolean
+deactivate_group (GstPlayBin * playbin, GstSourceGroup * group)
+{
+ gint i;
+
+ g_return_val_if_fail (group->valid, FALSE);
+ g_return_val_if_fail (group->active, FALSE);
+
+ GST_DEBUG_OBJECT (playbin, "unlinking group %p", group);
+
+ for (i = 0; i < GST_PLAY_SINK_TYPE_LAST; i++) {
+ GstSourceSelect *select = &group->selector[i];
+
+ if (!select->selector)
+ continue;
+
+ GST_DEBUG_OBJECT (playbin, "unlinking selector %s", select->media);
+ gst_pad_unlink (select->srcpad, select->sinkpad);
+
+ /* release back */
+ gst_play_sink_release_pad (playbin->playsink, select->sinkpad);
+ select->sinkpad = NULL;
+
+ gst_object_unref (select->srcpad);
+ select->srcpad = NULL;
+
+ gst_element_set_state (select->selector, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN_CAST (playbin), select->selector);
+ select->selector = NULL;
+ }
+ group->active = FALSE;
+
+ return TRUE;
+}
+
+/* setup the next group to play, this assumes the next_group is valid and
+ * configured. It swaps out the current_group and activates the valid
+ * next_group. */
+static gboolean
+setup_next_source (GstPlayBin * playbin)
+{
+ GstSourceGroup *new_group, *old_group;
+
+ GST_DEBUG_OBJECT (playbin, "setup sources");
+
+ /* see if there is a next group */
+ new_group = playbin->next_group;
+ if (!new_group || !new_group->valid)
+ goto no_next_group;
+
+ /* first unlink the current source, if any */
+ old_group = playbin->curr_group;
+ if (old_group && old_group->valid) {
+ /* unlink our pads with the sink */
+ deactivate_group (playbin, old_group);
+ old_group->valid = FALSE;
+ }
+
+ /* activate the new group */
+ if (!activate_group (playbin, new_group))
+ goto activate_failed;
+
+ /* swap old and new */
+ playbin->curr_group = new_group;
+ playbin->next_group = old_group;
+
+ return TRUE;
+
+ /* ERRORS */
+no_next_group:
+ {
+ GST_DEBUG_OBJECT (playbin, "no next group");
+ return FALSE;
+ }
+activate_failed:
+ {
+ GST_DEBUG_OBJECT (playbin, "activate failed");
+ return FALSE;
+ }
+}
+
+/* The group that is currently playing is copied again to the
+ * next_group.
+ */
+static gboolean
+save_current_group (GstPlayBin * playbin)
+{
+ GstSourceGroup *curr_group;
+
+ GST_DEBUG_OBJECT (playbin, "save current group");
+
+ /* see if there is a current group */
+ curr_group = playbin->curr_group;
+ if (curr_group && curr_group->valid) {
+ /* unlink our pads with the sink */
+ deactivate_group (playbin, curr_group);
+ }
+ /* swap old and new */
+ playbin->curr_group = playbin->next_group;
+ playbin->next_group = curr_group;
+
+ return TRUE;
+}
+
+static GstStateChangeReturn
+gst_play_bin_change_state (GstElement * element, GstStateChange transition)
+{
+ GstStateChangeReturn ret;
+ GstPlayBin *playbin;
+
+ playbin = GST_PLAY_BIN (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ if (!setup_next_source (playbin))
+ goto source_failed;
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+ if (ret == GST_STATE_CHANGE_FAILURE)
+ return ret;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ break;
+ case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+ /* FIXME Release audio device when we implement that */
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ save_current_group (playbin);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+
+ /* ERRORS */
+source_failed:
+ {
+ return GST_STATE_CHANGE_FAILURE;
+ }
+}
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+
+gboolean
+gst_play_bin2_plugin_init (GstPlugin * plugin)
+{
+ GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin2", 0, "play bin");
+
+ return gst_element_register (plugin, "playbin2", GST_RANK_NONE,
+ GST_TYPE_PLAY_BIN);
+}