mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-24 17:20:36 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/gst/playback/gstplaybin2.c
Wim Taymans c98a370f8c gst/playback/gstdecodebin2.c: Remove fakesink hack, we can now implement this more elegantly. 
Original commit message from CVS:
* gst/playback/gstdecodebin2.c: (gst_decode_bin_class_init),
(gst_decode_bin_init), (gst_decode_bin_dispose),
(gst_decode_bin_set_sink_caps), (gst_decode_bin_get_sink_caps),
(gst_decode_bin_set_property), (gst_decode_bin_get_property),
(analyze_new_pad), (connect_pad), (expose_pad),
(gst_decode_group_new), (gst_decode_group_control_demuxer_pad),
(gst_decode_group_expose), (gst_decode_group_free),
(do_async_start), (do_async_done), (gst_decode_bin_change_state):
Remove fakesink hack, we can now implement this more elegantly.
Added property to bypass typefinding.
Removed underrun callback and demuxer pad probe, we now use the srcpad
probe to expose groups.
API::sink-caps property
* gst/playback/gstplaybin2.c: (no_more_pads_cb):
Guard against multiple emissions of the no_more_pads signal, which
happens when we are dealing with chained oggs.
* gst/playback/gsturidecodebin.c: (remove_decoders),
(make_decoder), (type_found), (setup_streaming), (source_new_pad),
(setup_source):
For streams, use our own typefind element and plug our queue after it.
We will need this to determine the type of buffering to use for the
queue soon.
2008-04-03 12:16:04 +00:00

2073 lines
67 KiB
C
Raw Blame History

/* 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. Subtitles can be store in external
* files.
* </listitem>
* <listitem>
* stream selection between different video/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 with mute option
* </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, &amp;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"
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 */
};
#define GST_SOURCE_GROUP_GET_LOCK(group) (((GstSourceGroup*)(group))->lock)
#define GST_SOURCE_GROUP_GET_COND(group) (((GstSourceGroup*)(group))->cond)
#define GST_SOURCE_GROUP_LOCK(group) (g_mutex_lock (GST_SOURCE_GROUP_GET_LOCK(group)))
#define GST_SOURCE_GROUP_UNLOCK(group) (g_mutex_unlock (GST_SOURCE_GROUP_GET_LOCK(group)))
#define GST_SOURCE_GROUP_WAIT(group) (g_cond_wait \
(GST_SOURCE_GROUP_GET_COND (group),GST_SOURCE_GROUP_GET_LOCK(group)))
#define GST_SOURCE_GROUP_BROADCAST(group) (g_cond_broadcast \
(GST_SOURCE_GROUP_GET_COND (group)))
/* a structure to hold the objects for decoding a uri and the subtitle uri
*/
struct _GstSourceGroup
{
GstPlayBin *playbin;
GMutex *lock;
GCond *cond;
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;
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;
gint pending;
/* selectors for different streams */
GstSourceSelect selector[GST_PLAY_SINK_TYPE_LAST];
};
#define GST_PLAY_BIN_GET_LOCK(bin) (((GstPlayBin*)(bin))->lock)
#define GST_PLAY_BIN_LOCK(bin) (g_mutex_lock (GST_PLAY_BIN_GET_LOCK(bin)))
#define GST_PLAY_BIN_UNLOCK(bin) (g_mutex_unlock (GST_PLAY_BIN_GET_LOCK(bin)))
struct _GstPlayBin
{
GstPipeline parent;
GMutex *lock; /* to protect group switching */
/* 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 */
gchar *encoding; /* subtitle encoding */
/* 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 | G_PARAM_STATIC_STRINGS));
/**
* 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_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_klass, PROP_SOURCE,
g_param_spec_object ("source", "Source", "Source element",
GST_TYPE_ELEMENT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
/**
* 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 | G_PARAM_STATIC_STRINGS));
/**
* 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 | G_PARAM_STATIC_STRINGS));
/**
* 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 | G_PARAM_STATIC_STRINGS));
/**
* 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 | G_PARAM_STATIC_STRINGS));
/**
* 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 | G_PARAM_STATIC_STRINGS));
/**
* 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 | G_PARAM_STATIC_STRINGS));
/**
* 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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_klass, PROP_VIS_PLUGIN,
g_param_spec_object ("vis-plugin", "Vis plugin",
"the visualization element to use (NULL = default)",
GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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 | G_PARAM_STATIC_STRINGS));
/**
* 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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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 | G_PARAM_STATIC_STRINGS));
/**
* 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 ();
group->lock = g_mutex_new ();
group->cond = g_cond_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
free_group (GstPlayBin * playbin, GstSourceGroup * group)
{
g_ptr_array_free (group->video_channels, TRUE);
g_ptr_array_free (group->audio_channels, TRUE);
g_ptr_array_free (group->text_channels, TRUE);
g_mutex_free (group->lock);
g_cond_free (group->cond);
}
static void
gst_play_bin_init (GstPlayBin * playbin)
{
GstFactoryListType type;
playbin->lock = g_mutex_new ();
/* 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;
playbin->encoding = g_strdup (DEFAULT_SUBTITLE_ENCODING);
}
static void
gst_play_bin_finalize (GObject * object)
{
GstPlayBin *playbin;
playbin = GST_PLAY_BIN (object);
free_group (playbin, &playbin->groups[0]);
free_group (playbin, &playbin->groups[1]);
g_value_array_free (playbin->elements);
g_free (playbin->encoding);
g_mutex_free (playbin->lock);
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_PLAY_BIN_LOCK (playbin);
group = playbin->next_group;
GST_SOURCE_GROUP_LOCK (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_SOURCE_GROUP_UNLOCK (group);
GST_DEBUG ("setting new uri to %s", uri);
GST_PLAY_BIN_UNLOCK (playbin);
}
static void
gst_play_bin_set_suburi (GstPlayBin * playbin, const gchar * suburi)
{
GstSourceGroup *group;
GST_PLAY_BIN_LOCK (playbin);
group = playbin->next_group;
GST_SOURCE_GROUP_LOCK (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_SOURCE_GROUP_UNLOCK (group);
GST_PLAY_BIN_UNLOCK (playbin);
}
/* get the currently playing group or if nothing is playing, the next
* group. Must be called with the PLAY_BIN_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_PLAY_BIN_LOCK (playbin);
group = get_group (playbin);
result = get_tags (playbin, group->video_channels, stream);
GST_PLAY_BIN_UNLOCK (playbin);
return result;
}
static GstTagList *
gst_play_bin_get_audio_tags (GstPlayBin * playbin, gint stream)
{
GstTagList *result;
GstSourceGroup *group;
GST_PLAY_BIN_LOCK (playbin);
group = get_group (playbin);
result = get_tags (playbin, group->audio_channels, stream);
GST_PLAY_BIN_UNLOCK (playbin);
return result;
}
static GstTagList *
gst_play_bin_get_text_tags (GstPlayBin * playbin, gint stream)
{
GstTagList *result;
GstSourceGroup *group;
GST_PLAY_BIN_LOCK (playbin);
group = get_group (playbin);
result = get_tags (playbin, group->text_channels, stream);
GST_PLAY_BIN_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_PLAY_BIN_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_PLAY_BIN_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_PLAY_BIN_UNLOCK (playbin);
return FALSE;
}
}
static gboolean
gst_play_bin_set_current_audio_stream (GstPlayBin * playbin, gint stream)
{
GstSourceGroup *group;
GPtrArray *channels;
GstPad *sinkpad;
GST_PLAY_BIN_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_PLAY_BIN_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_PLAY_BIN_UNLOCK (playbin);
return FALSE;
}
}
static gboolean
gst_play_bin_set_current_text_stream (GstPlayBin * playbin, gint stream)
{
GstSourceGroup *group;
GPtrArray *channels;
GstPad *sinkpad;
GST_PLAY_BIN_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_PLAY_BIN_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_PLAY_BIN_UNLOCK (playbin);
return FALSE;
}
}
static void
gst_play_bin_set_encoding (GstPlayBin * playbin, const gchar * encoding)
{
GstElement *elem;
GST_PLAY_BIN_LOCK (playbin);
g_free (playbin->encoding);
playbin->encoding = g_strdup (encoding);
/* set subtitles on all current and next decodebins. */
if ((elem = playbin->groups[0].uridecodebin))
g_object_set (G_OBJECT (elem), "subtitle-encoding", encoding, NULL);
if ((elem = playbin->groups[0].suburidecodebin))
g_object_set (G_OBJECT (elem), "subtitle-encoding", encoding, NULL);
if ((elem = playbin->groups[1].uridecodebin))
g_object_set (G_OBJECT (elem), "subtitle-encoding", encoding, NULL);
if ((elem = playbin->groups[1].suburidecodebin))
g_object_set (G_OBJECT (elem), "subtitle-encoding", encoding, NULL);
GST_PLAY_BIN_UNLOCK (playbin);
}
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));
gst_play_sink_reconfigure (playbin->playsink);
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:
gst_play_bin_set_encoding (playbin, g_value_get_string (value));
break;
case PROP_VIDEO_SINK:
gst_play_sink_set_video_sink (playbin->playsink,
g_value_get_object (value));
break;
case PROP_AUDIO_SINK:
gst_play_sink_set_audio_sink (playbin->playsink,
g_value_get_object (value));
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:
gst_play_sink_set_font_desc (playbin->playsink,
g_value_get_string (value));
break;
case PROP_CONNECTION_SPEED:
GST_PLAY_BIN_LOCK (playbin);
playbin->connection_speed = g_value_get_uint (value) * 1000;
GST_PLAY_BIN_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_PLAY_BIN_LOCK (playbin);
group = get_group (playbin);
g_value_set_string (value, group->uri);
GST_PLAY_BIN_UNLOCK (playbin);
break;
}
case PROP_SUBURI:
{
GstSourceGroup *group;
GST_PLAY_BIN_LOCK (playbin);
group = get_group (playbin);
g_value_set_string (value, group->suburi);
GST_PLAY_BIN_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_PLAY_BIN_LOCK (playbin);
group = get_group (playbin);
n_video = (group->video_channels ? group->video_channels->len : 0);
g_value_set_int (value, n_video);
GST_PLAY_BIN_UNLOCK (playbin);
break;
}
case PROP_CURRENT_VIDEO:
GST_PLAY_BIN_LOCK (playbin);
g_value_set_int (value, playbin->current_video);
GST_PLAY_BIN_UNLOCK (playbin);
break;
case PROP_N_AUDIO:
{
GstSourceGroup *group;
gint n_audio;
GST_PLAY_BIN_LOCK (playbin);
group = get_group (playbin);
n_audio = (group->audio_channels ? group->audio_channels->len : 0);
g_value_set_int (value, n_audio);
GST_PLAY_BIN_UNLOCK (playbin);
break;
}
case PROP_CURRENT_AUDIO:
GST_PLAY_BIN_LOCK (playbin);
g_value_set_int (value, playbin->current_audio);
GST_PLAY_BIN_UNLOCK (playbin);
break;
case PROP_N_TEXT:
{
GstSourceGroup *group;
gint n_text;
GST_PLAY_BIN_LOCK (playbin);
group = get_group (playbin);
n_text = (group->text_channels ? group->text_channels->len : 0);
g_value_set_int (value, n_text);
GST_PLAY_BIN_UNLOCK (playbin);
break;
}
case PROP_CURRENT_TEXT:
GST_PLAY_BIN_LOCK (playbin);
g_value_set_int (value, playbin->current_text);
GST_PLAY_BIN_UNLOCK (playbin);
break;
case PROP_SUBTITLE_ENCODING:
GST_PLAY_BIN_LOCK (playbin);
g_value_set_string (value, playbin->encoding);
GST_PLAY_BIN_UNLOCK (playbin);
break;
case PROP_VIDEO_SINK:
g_value_set_object (value,
gst_play_sink_get_video_sink (playbin->playsink));
break;
case PROP_AUDIO_SINK:
g_value_set_object (value,
gst_play_sink_get_audio_sink (playbin->playsink));
break;
case PROP_VIS_PLUGIN:
g_value_set_object (value,
gst_play_sink_get_vis_plugin (playbin->playsink));
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:
g_value_take_string (value,
gst_play_sink_get_font_desc (playbin->playsink));
break;
case PROP_CONNECTION_SPEED:
GST_PLAY_BIN_LOCK (playbin);
g_value_set_uint (value, playbin->connection_speed / 1000);
GST_PLAY_BIN_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;
GST_SOURCE_GROUP_LOCK (group);
if (select->selector == NULL) {
/* no selector, create one */
GST_DEBUG_OBJECT (playbin, "creating new selector");
select->selector = gst_element_factory_make ("input-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);
GST_SOURCE_GROUP_UNLOCK (group);
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));
GST_SOURCE_GROUP_UNLOCK (group);
return;
}
link_failed:
{
GST_ERROR_OBJECT (playbin,
"failed to link pad %s:%s to selector, reason %d",
GST_DEBUG_PAD_NAME (pad), res);
GST_SOURCE_GROUP_UNLOCK (group);
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);
GST_SOURCE_GROUP_LOCK (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);
GST_SOURCE_GROUP_UNLOCK (group);
return;
/* ERRORS */
not_linked:
{
GST_DEBUG_OBJECT (playbin, "pad not linked");
GST_SOURCE_GROUP_UNLOCK (group);
return;
}
no_selector:
{
GST_DEBUG_OBJECT (playbin, "selector not found");
GST_SOURCE_GROUP_UNLOCK (group);
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;
gboolean configure;
playbin = group->playbin;
GST_DEBUG_OBJECT (playbin, "no more pads in group %p", group);
GST_SOURCE_GROUP_LOCK (group);
for (i = 0; i < GST_PLAY_SINK_TYPE_LAST; i++) {
GstSourceSelect *select = &group->selector[i];
/* check if the specific media type was detected and thus has a selector
* created for it. If there is the media type, get a sinkpad from the sink
* and link it. We only do this if we have not yet requested the sinkpad
* before. */
if (select->selector && select->sinkpad == NULL) {
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);
}
}
GST_DEBUG_OBJECT (playbin, "pending %d > %d", group->pending,
group->pending - 1);
if (group->pending > 0)
group->pending--;
if (group->pending == 0) {
/* we are the last group to complete, we will configure the output and then
* signal the other waiters. */
configure = TRUE;
} else {
configure = FALSE;
/* check if there are more decodebins to wait for */
while (group->pending) {
GST_DEBUG_OBJECT (playbin, "%d pending in group %p, waiting",
group->pending, group);
/* FIXME, unlock when shutting down */
GST_SOURCE_GROUP_WAIT (group);
}
}
GST_SOURCE_GROUP_UNLOCK (group);
if (configure) {
/* we configure the modes if we were the last decodebin to complete. */
gst_play_sink_reconfigure (playbin->playsink);
/* signal the other decodebins that they can continue now. */
GST_SOURCE_GROUP_LOCK (group);
GST_DEBUG_OBJECT (playbin, "signal other decodebins");
GST_SOURCE_GROUP_BROADCAST (group);
GST_SOURCE_GROUP_UNLOCK (group);
}
}
/* 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 ();
GST_SOURCE_GROUP_LOCK (group);
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_SOURCE_GROUP_UNLOCK (group);
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 SELECT_EXPOSE 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");
klass = gst_element_factory_get_klass (factory);
/* if we are asked to do visualisations and it's an audio sink, skip the
* element. We can only do visualisations with raw sinks */
if (gst_play_sink_get_flags (playbin->playsink) & GST_PLAY_FLAG_VIS) {
if (strstr (klass, "Audio")) {
GST_DEBUG_OBJECT (playbin, "skip audio sink because of vis");
return GST_AUTOPLUG_SELECT_SKIP;
}
}
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;
}
/* 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);
g_object_notify (G_OBJECT (playbin), "audio-sink");
} else if (strstr (klass, "Video")) {
GST_DEBUG_OBJECT (playbin, "configure video sink");
gst_play_sink_set_video_sink (playbin->playsink, element);
g_object_notify (G_OBJECT (playbin), "video-sink");
} 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;
}
/* must be called with PLAY_BIN_LOCK */
static gboolean
activate_group (GstPlayBin * playbin, GstSourceGroup * group)
{
GstElement *uridecodebin;
GstElement *suburidecodebin;
g_return_val_if_fail (group->valid, FALSE);
g_return_val_if_fail (!group->active, FALSE);
GST_SOURCE_GROUP_LOCK (group);
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 subtitle encoding */
g_object_set (uridecodebin, "subtitle-encoding", playbin->encoding, 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);
/* we have 1 pending no-more-pads */
group->pending = 1;
/* 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;
if (group->suburi) {
/* subtitles */
if (group->suburidecodebin) {
gst_element_set_state (group->suburidecodebin, GST_STATE_NULL);
gst_bin_remove (GST_BIN_CAST (playbin), group->suburidecodebin);
group->suburidecodebin = NULL;
}
suburidecodebin = gst_element_factory_make ("uridecodebin", NULL);
if (!suburidecodebin)
goto no_decodebin;
/* configure connection speed */
g_object_set (suburidecodebin, "connection-speed",
playbin->connection_speed, NULL);
/* configure subtitle encoding */
g_object_set (suburidecodebin, "subtitle-encoding", playbin->encoding,
NULL);
/* configure uri */
g_object_set (suburidecodebin, "uri", group->suburi, NULL);
/* */
gst_bin_add (GST_BIN_CAST (playbin), suburidecodebin);
group->suburidecodebin = suburidecodebin;
/* connect pads and other things */
g_signal_connect (suburidecodebin, "pad-added", G_CALLBACK (pad_added_cb),
group);
g_signal_connect (suburidecodebin, "pad-removed",
G_CALLBACK (pad_removed_cb), group);
g_signal_connect (suburidecodebin, "no-more-pads",
G_CALLBACK (no_more_pads_cb), group);
/* we have 2 pending no-more-pads */
group->pending = 2;
gst_element_set_state (suburidecodebin, GST_STATE_PAUSED);
}
gst_element_set_state (uridecodebin, GST_STATE_PAUSED);
group->active = TRUE;
GST_SOURCE_GROUP_UNLOCK (group);
return TRUE;
/* ERRORS */
no_decodebin:
{
GST_SOURCE_GROUP_UNLOCK (group);
return FALSE;
}
}
/* unlink a group of uridecodebins from the sink.
* must be called with PLAY_BIN_LOCK */
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);
GST_SOURCE_GROUP_LOCK (group);
group->active = FALSE;
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;
}
GST_SOURCE_GROUP_UNLOCK (group);
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 */
GST_PLAY_BIN_LOCK (playbin);
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;
GST_PLAY_BIN_UNLOCK (playbin);
return TRUE;
/* ERRORS */
no_next_group:
{
GST_DEBUG_OBJECT (playbin, "no next group");
GST_PLAY_BIN_UNLOCK (playbin);
return FALSE;
}
activate_failed:
{
GST_DEBUG_OBJECT (playbin, "activate failed");
GST_PLAY_BIN_UNLOCK (playbin);
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 */
GST_PLAY_BIN_LOCK (playbin);
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;
GST_PLAY_BIN_UNLOCK (playbin);
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;
case GST_STATE_CHANGE_PAUSED_TO_READY:
/* FIXME unlock our waiting groups */
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;
}
}
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);
}
Reference in a new issue View git blame Copy permalink