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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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There's not much point in using GST_DEBUG_FUNCPTR with GObject virtual functions such as get_property, set_propery, finalize and dispose, since they'll never be used by anyone anyway. Saves a few bytes and possibly a sixteenth of a polar bear.
1977 lines
64 KiB
C
1977 lines
64 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-playbin
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*
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* Playbin provides a stand-alone everything-in-one abstraction for an
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* audio and/or video player.
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*
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* It can handle both audio and video files and features
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* <itemizedlist>
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* <listitem>
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* automatic file type recognition and based on that automatic
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* selection and usage of the right audio/video/subtitle demuxers/decoders
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* </listitem>
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* <listitem>
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* visualisations for audio files
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* </listitem>
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* <listitem>
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* subtitle support for video files
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* </listitem>
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* <listitem>
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* stream selection between different audio/subtitles streams
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* </listitem>
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* <listitem>
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* meta info (tag) extraction
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* </listitem>
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* <listitem>
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* easy access to the last video frame
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* </listitem>
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* <listitem>
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* buffering when playing streams over a network
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* </listitem>
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* <listitem>
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* volume control
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* </listitem>
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* </itemizedlist>
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*
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* <refsect2>
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* <title>Usage</title>
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* <para>
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* A playbin element can be created just like any other element using
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* gst_element_factory_make(). The file/URI to play should be set via the #GstPlayBin:uri
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* property. This must be an absolute URI, relative file paths are not allowed.
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* Example URIs are file:///home/joe/movie.avi or http://www.joedoe.com/foo.ogg
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*
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* Playbin is a #GstPipeline. It will notify the application of everything
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* that's happening (errors, end of stream, tags found, state changes, etc.)
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* by posting messages on its #GstBus. The application needs to watch the
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* bus.
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*
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* Playback can be initiated by setting the element to PLAYING state using
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* gst_element_set_state(). Note that the state change will take place in
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* the background in a separate thread, when the function returns playback
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* is probably not happening yet and any errors might not have occured yet.
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* Applications using playbin should ideally be written to deal with things
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* completely asynchroneous.
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*
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* When playback has finished (an EOS message has been received on the bus)
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* or an error has occured (an ERROR message has been received on the bus) or
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* the user wants to play a different track, playbin should be set back to
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* READY or NULL state, then the #GstPlayBin:uri property should be set to the
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* new location and then playbin be set to PLAYING state again.
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*
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* Seeking can be done using gst_element_seek_simple() or gst_element_seek()
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* on the playbin element. Again, the seek will not be executed
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* instantaneously, but will be done in a background thread. When the seek
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* call returns the seek will most likely still be in process. An application
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* may wait for the seek to finish (or fail) using gst_element_get_state() with
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* -1 as the timeout, but this will block the user interface and is not
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* recommended at all.
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*
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* Applications may query the current position and duration of the stream
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* via gst_element_query_position() and gst_element_query_duration() and
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* setting the format passed to GST_FORMAT_TIME. If the query was successful,
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* the duration or position will have been returned in units of nanoseconds.
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* </para>
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* </refsect2>
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* <refsect2>
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* <title>Advanced Usage: specifying the audio and video sink</title>
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* <para>
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* By default, if no audio sink or video sink has been specified via the
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* #GstPlayBin:audio-sink or #GstPlayBin:video-sink property, playbin will use
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* the autoaudiosink and autovideosink elements to find the first-best
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* available output method.
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* This should work in most cases, but is not always desirable. Often either
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* the user or application might want to specify more explicitly what to use
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* for audio and video output.
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*
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* If the application wants more control over how audio or video should be
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* output, it may create the audio/video sink elements itself (for example
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* using gst_element_factory_make()) and provide them to playbin using the
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* #GstPlayBin:audio-sink or #GstPlayBin:video-sink property.
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*
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* GNOME-based applications, for example, will usually want to create
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* gconfaudiosink and gconfvideosink elements and make playbin use those,
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* so that output happens to whatever the user has configured in the GNOME
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* Multimedia System Selector confinguration dialog.
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*
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* The sink elements do not necessarily need to be ready-made sinks. It is
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* possible to create container elements that look like a sink to playbin,
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* but in reality contain a number of custom elements linked together. This
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* can be achieved by creating a #GstBin and putting elements in there and
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* linking them, and then creating a sink #GstGhostPad for the bin and pointing
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* it to the sink pad of the first element within the bin. This can be used
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* for a number of purposes, for example to force output to a particular
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* format or to modify or observe the data before it is output.
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*
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* It is also possible to 'suppress' audio and/or video output by using
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* 'fakesink' elements (or capture it from there using the fakesink element's
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* "handoff" signal, which, nota bene, is fired from the streaming thread!).
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* </para>
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* </refsect2>
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* <refsect2>
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* <title>Retrieving Tags and Other Meta Data</title>
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* <para>
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* Most of the common meta data (artist, title, etc.) can be retrieved by
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* watching for TAG messages on the pipeline's bus (see above).
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*
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* Other more specific meta information like width/height/framerate of video
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* streams or samplerate/number of channels of audio streams can be obtained
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* using the #GstPlayBaseBin:stream-info property, which will return a GList of
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* stream info objects, one for each stream. These are opaque objects that can
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* only be accessed via the standard GObject property interface, ie. g_object_get().
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* Each stream info object has the following properties:
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* <itemizedlist>
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* <listitem>"object" (GstObject) (the decoder source pad usually)</listitem>
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* <listitem>"type" (enum) (if this is an audio/video/subtitle stream)</listitem>
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* <listitem>"decoder" (string) (name of decoder used to decode this stream)</listitem>
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* <listitem>"mute" (boolean) (to mute or unmute this stream)</listitem>
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* <listitem>"caps" (GstCaps) (caps of the decoded stream)</listitem>
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* <listitem>"language-code" (string) (ISO-639 language code for this stream, mostly used for audio/subtitle streams)</listitem>
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* <listitem>"codec" (string) (format this stream was encoded in)</listitem>
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* </itemizedlist>
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* Stream information from the #GstPlayBaseBin:stream-info property is best queried once
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* playbin has changed into PAUSED or PLAYING state (which can be detected
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* via a state-changed message on the #GstBus where old_state=READY and
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* new_state=PAUSED), since before that the list might not be complete yet or
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* not contain all available information (like language-codes).
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* </para>
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* </refsect2>
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* <refsect2>
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* <title>Buffering</title>
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* Playbin handles buffering automatically for the most part, but applications
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* need to handle parts of the buffering process as well. Whenever playbin is
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* buffering, it will post BUFFERING messages on the bus with a percentage
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* value that shows the progress of the buffering process. Applications need
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* to set playbin to PLAYING or PAUSED state in response to these messages.
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* They may also want to convey the buffering progress to the user in some
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* way. Here is how to extract the percentage information from the message
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* (requires GStreamer >= 0.10.11):
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* |[
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* switch (GST_MESSAGE_TYPE (msg)) {
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* case GST_MESSAGE_BUFFERING: {
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* gint percent = 0;
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* gst_message_parse_buffering (msg, &percent);
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* g_print ("Buffering (%%u percent done)", percent);
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* break;
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* }
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* ...
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* }
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* ]|
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* Note that applications should keep/set the pipeline in the PAUSED state when
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* a BUFFERING message is received with a buffer percent value < 100 and set
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* the pipeline back to PLAYING state when a BUFFERING message with a value
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* of 100 percent is received (if PLAYING is the desired state, that is).
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* </refsect2>
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* <refsect2>
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* <title>Embedding the video window in your application</title>
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* By default, playbin (or rather the video sinks used) will create their own
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* window. Applications will usually want to force output to a window of their
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* own, however. This can be done using the #GstXOverlay interface, which most
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* video sinks implement. See the documentation there for more details.
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* </refsect2>
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* <refsect2>
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* <title>Specifying which CD/DVD device to use</title>
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* The device to use for CDs/DVDs needs to be set on the source element
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* playbin creates before it is opened. The only way to do this at the moment
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* is to connect to playbin's "notify::source" signal, which will be emitted
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* by playbin when it has created the source element for a particular URI.
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* In the signal callback you can check if the source element has a "device"
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* property and set it appropriately. In future ways might be added to specify
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* the device as part of the URI, but at the time of writing this is not
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* possible yet.
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* </refsect2>
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* <refsect2>
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* <title>Examples</title>
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* |[
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* gst-launch -v playbin uri=file:///path/to/somefile.avi
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* ]| This will play back the given AVI video file, given that the video and
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* audio decoders required to decode the content are installed. Since no
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* special audio sink or video sink is supplied (not possible via gst-launch),
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* playbin will try to find a suitable audio and video sink automatically
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* using the autoaudiosink and autovideosink elements.
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* |[
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* gst-launch -v playbin uri=cdda://4
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* ]| This will play back track 4 on an audio CD in your disc drive (assuming
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* the drive is detected automatically by the plugin).
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* |[
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* gst-launch -v playbin uri=dvd://1
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* ]| This will play back title 1 of a DVD in your disc drive (assuming
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* the drive is detected automatically by the plugin).
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <gst/gst.h>
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#include <gst/gst-i18n-plugin.h>
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#include <gst/pbutils/pbutils.h>
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#include "gstplaybasebin.h"
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GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
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#define GST_CAT_DEFAULT gst_play_bin_debug
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#define GST_TYPE_PLAY_BIN (gst_play_bin_get_type())
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#define GST_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAY_BIN,GstPlayBin))
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#define GST_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAY_BIN,GstPlayBinClass))
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#define GST_IS_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAY_BIN))
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#define GST_IS_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLAY_BIN))
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#define VOLUME_MAX_DOUBLE 10.0
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typedef struct _GstPlayBin GstPlayBin;
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typedef struct _GstPlayBinClass GstPlayBinClass;
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/**
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* GstPlayBin:
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*
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* High-level player element
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*/
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struct _GstPlayBin
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{
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GstPlayBaseBin parent;
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/* the configurable elements */
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GstElement *fakesink;
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GstElement *audio_sink;
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GstElement *video_sink;
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GstElement *visualisation;
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GstElement *pending_visualisation;
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GstElement *volume_element;
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GstElement *textoverlay_element;
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GstElement *spu_element;
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gfloat volume;
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/* these are the currently active sinks */
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GList *sinks;
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/* the last captured frame for snapshots */
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GstBuffer *frame;
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/* our cache for the sinks */
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GHashTable *cache;
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/* font description */
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gchar *font_desc;
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/* indication if the pipeline is live */
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gboolean is_live;
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};
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struct _GstPlayBinClass
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{
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GstPlayBaseBinClass parent_class;
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};
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/* props */
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enum
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{
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ARG_0,
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ARG_AUDIO_SINK,
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ARG_VIDEO_SINK,
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ARG_VIS_PLUGIN,
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ARG_VOLUME,
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ARG_FRAME,
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ARG_FONT_DESC
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};
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/* signals */
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enum
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{
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LAST_SIGNAL
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};
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static void gst_play_bin_class_init (GstPlayBinClass * klass);
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static void gst_play_bin_init (GstPlayBin * play_bin);
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static void gst_play_bin_dispose (GObject * object);
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static gboolean setup_sinks (GstPlayBaseBin * play_base_bin,
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GstPlayBaseGroup * group);
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static void remove_sinks (GstPlayBin * play_bin);
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static void playbin_set_subtitles_visible (GstPlayBaseBin * play_base_bin,
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gboolean visible);
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static void playbin_set_audio_mute (GstPlayBaseBin * play_base_bin,
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gboolean mute);
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static void gst_play_bin_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * spec);
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static void gst_play_bin_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * spec);
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static gboolean gst_play_bin_send_event (GstElement * element,
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GstEvent * event);
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static GstStateChangeReturn gst_play_bin_change_state (GstElement * element,
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GstStateChange transition);
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static void gst_play_bin_handle_message (GstBin * bin, GstMessage * message);
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static GstElementClass *parent_class;
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//static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
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static const GstElementDetails gst_play_bin_details =
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GST_ELEMENT_DETAILS ("Player Bin",
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"Generic/Bin/Player",
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"Autoplug and play media from an uri",
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"Wim Taymans <wim.taymans@gmail.com>");
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static GType
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gst_play_bin_get_type (void)
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{
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static GType gst_play_bin_type = 0;
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if (!gst_play_bin_type) {
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static const GTypeInfo gst_play_bin_info = {
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sizeof (GstPlayBinClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_play_bin_class_init,
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NULL,
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NULL,
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sizeof (GstPlayBin),
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0,
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(GInstanceInitFunc) gst_play_bin_init,
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NULL
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};
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gst_play_bin_type = g_type_register_static (GST_TYPE_PLAY_BASE_BIN,
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"GstPlayBin", &gst_play_bin_info, 0);
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}
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return gst_play_bin_type;
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}
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static void
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gst_play_bin_class_init (GstPlayBinClass * klass)
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{
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GObjectClass *gobject_klass;
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GstElementClass *gstelement_klass;
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GstBinClass *gstbin_klass;
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GstPlayBaseBinClass *playbasebin_klass;
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gobject_klass = (GObjectClass *) klass;
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gstelement_klass = (GstElementClass *) klass;
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gstbin_klass = (GstBinClass *) klass;
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playbasebin_klass = (GstPlayBaseBinClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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gobject_klass->set_property = gst_play_bin_set_property;
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gobject_klass->get_property = gst_play_bin_get_property;
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g_object_class_install_property (gobject_klass, ARG_VIDEO_SINK,
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g_param_spec_object ("video-sink", "Video Sink",
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"the video output element to use (NULL = default sink)",
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GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_klass, ARG_AUDIO_SINK,
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g_param_spec_object ("audio-sink", "Audio Sink",
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"the audio output element to use (NULL = default sink)",
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GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_klass, ARG_VIS_PLUGIN,
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g_param_spec_object ("vis-plugin", "Vis plugin",
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"the visualization element to use (NULL = none)",
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GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstPlayBin:volume:
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*
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* Get or set the current audio stream volume. 1.0 means 100%,
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* 0.0 means mute. This uses a linear volume scale.
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*
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*/
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g_object_class_install_property (gobject_klass, ARG_VOLUME,
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g_param_spec_double ("volume", "volume", "volume",
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0.0, VOLUME_MAX_DOUBLE, 1.0,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_klass, ARG_FRAME,
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gst_param_spec_mini_object ("frame", "Frame",
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"The last frame (NULL = no video available)", GST_TYPE_BUFFER,
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G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_klass, ARG_FONT_DESC,
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g_param_spec_string ("subtitle-font-desc", "Subtitle font description",
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"Pango font description of font " "to be used for subtitle rendering",
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NULL, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
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gobject_klass->dispose = gst_play_bin_dispose;
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gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
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gstelement_klass->change_state =
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GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
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gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_play_bin_send_event);
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gstbin_klass->handle_message =
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GST_DEBUG_FUNCPTR (gst_play_bin_handle_message);
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playbasebin_klass->setup_output_pads = setup_sinks;
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playbasebin_klass->set_subtitles_visible = playbin_set_subtitles_visible;
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playbasebin_klass->set_audio_mute = playbin_set_audio_mute;
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}
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static void
|
|
gst_play_bin_init (GstPlayBin * play_bin)
|
|
{
|
|
play_bin->video_sink = NULL;
|
|
play_bin->audio_sink = NULL;
|
|
play_bin->visualisation = NULL;
|
|
play_bin->pending_visualisation = NULL;
|
|
play_bin->volume_element = NULL;
|
|
play_bin->textoverlay_element = NULL;
|
|
play_bin->spu_element = NULL;
|
|
play_bin->volume = 1.0;
|
|
play_bin->sinks = NULL;
|
|
play_bin->frame = NULL;
|
|
play_bin->font_desc = NULL;
|
|
play_bin->cache = g_hash_table_new_full (g_str_hash, g_str_equal,
|
|
NULL, (GDestroyNotify) gst_object_unref);
|
|
}
|
|
|
|
static void
|
|
gst_play_bin_dispose (GObject * object)
|
|
{
|
|
GstPlayBin *play_bin;
|
|
|
|
play_bin = GST_PLAY_BIN (object);
|
|
|
|
if (play_bin->cache != NULL) {
|
|
remove_sinks (play_bin);
|
|
g_hash_table_destroy (play_bin->cache);
|
|
play_bin->cache = NULL;
|
|
}
|
|
|
|
if (play_bin->audio_sink != NULL) {
|
|
gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
|
|
gst_object_unref (play_bin->audio_sink);
|
|
play_bin->audio_sink = NULL;
|
|
}
|
|
if (play_bin->video_sink != NULL) {
|
|
gst_element_set_state (play_bin->video_sink, GST_STATE_NULL);
|
|
gst_object_unref (play_bin->video_sink);
|
|
play_bin->video_sink = NULL;
|
|
}
|
|
if (play_bin->visualisation != NULL) {
|
|
gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
|
|
gst_object_unref (play_bin->visualisation);
|
|
play_bin->visualisation = NULL;
|
|
}
|
|
if (play_bin->pending_visualisation != NULL) {
|
|
gst_element_set_state (play_bin->pending_visualisation, GST_STATE_NULL);
|
|
gst_object_unref (play_bin->pending_visualisation);
|
|
play_bin->pending_visualisation = NULL;
|
|
}
|
|
if (play_bin->textoverlay_element != NULL) {
|
|
gst_object_unref (play_bin->textoverlay_element);
|
|
play_bin->textoverlay_element = NULL;
|
|
}
|
|
if (play_bin->spu_element != NULL) {
|
|
gst_object_unref (play_bin->spu_element);
|
|
play_bin->spu_element = NULL;
|
|
}
|
|
g_free (play_bin->font_desc);
|
|
play_bin->font_desc = NULL;
|
|
|
|
G_OBJECT_CLASS (parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gst_play_bin_vis_unblocked (GstPad * tee_pad, gboolean blocked,
|
|
gpointer user_data)
|
|
{
|
|
GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
|
|
|
|
if (play_bin->pending_visualisation)
|
|
gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
|
|
play_bin);
|
|
}
|
|
|
|
static void
|
|
gst_play_bin_vis_blocked (GstPad * tee_pad, gboolean blocked,
|
|
gpointer user_data)
|
|
{
|
|
GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
|
|
GstBin *vis_bin = NULL;
|
|
GstPad *vis_sink_pad = NULL, *vis_src_pad = NULL, *vqueue_pad = NULL;
|
|
GstState bin_state;
|
|
GstElement *pending_visualisation;
|
|
|
|
GST_OBJECT_LOCK (play_bin);
|
|
pending_visualisation = play_bin->pending_visualisation;
|
|
play_bin->pending_visualisation = NULL;
|
|
GST_OBJECT_UNLOCK (play_bin);
|
|
|
|
/* We want to disable visualisation */
|
|
if (!GST_IS_ELEMENT (pending_visualisation)) {
|
|
/* Set visualisation element to READY */
|
|
gst_element_set_state (play_bin->visualisation, GST_STATE_READY);
|
|
goto beach;
|
|
}
|
|
|
|
vis_bin =
|
|
GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST
|
|
(play_bin->visualisation)));
|
|
|
|
if (!GST_IS_BIN (vis_bin) || !GST_IS_PAD (tee_pad)) {
|
|
goto beach;
|
|
}
|
|
|
|
vis_src_pad = gst_element_get_static_pad (play_bin->visualisation, "src");
|
|
vis_sink_pad = gst_pad_get_peer (tee_pad);
|
|
|
|
/* Can be fakesink */
|
|
if (GST_IS_PAD (vis_src_pad)) {
|
|
vqueue_pad = gst_pad_get_peer (vis_src_pad);
|
|
}
|
|
|
|
if (!GST_IS_PAD (vis_sink_pad)) {
|
|
goto beach;
|
|
}
|
|
|
|
/* Check the bin's state */
|
|
GST_OBJECT_LOCK (vis_bin);
|
|
bin_state = GST_STATE (vis_bin);
|
|
GST_OBJECT_UNLOCK (vis_bin);
|
|
|
|
/* Unlink */
|
|
gst_pad_unlink (tee_pad, vis_sink_pad);
|
|
gst_object_unref (vis_sink_pad);
|
|
vis_sink_pad = NULL;
|
|
|
|
if (GST_IS_PAD (vqueue_pad)) {
|
|
gst_pad_unlink (vis_src_pad, vqueue_pad);
|
|
gst_object_unref (vis_src_pad);
|
|
vis_src_pad = NULL;
|
|
}
|
|
|
|
/* Remove from vis_bin */
|
|
gst_bin_remove (vis_bin, play_bin->visualisation);
|
|
/* Set state to NULL */
|
|
gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
|
|
/* And loose our ref */
|
|
gst_object_unref (play_bin->visualisation);
|
|
|
|
if (pending_visualisation) {
|
|
/* Ref this new visualisation element before adding to the bin */
|
|
gst_object_ref (pending_visualisation);
|
|
/* Add the new one */
|
|
gst_bin_add (vis_bin, pending_visualisation);
|
|
/* Synchronizing state */
|
|
gst_element_set_state (pending_visualisation, bin_state);
|
|
|
|
vis_sink_pad = gst_element_get_static_pad (pending_visualisation, "sink");
|
|
vis_src_pad = gst_element_get_static_pad (pending_visualisation, "src");
|
|
|
|
if (!GST_IS_PAD (vis_sink_pad) || !GST_IS_PAD (vis_src_pad)) {
|
|
goto beach;
|
|
}
|
|
|
|
/* Link */
|
|
gst_pad_link (tee_pad, vis_sink_pad);
|
|
gst_pad_link (vis_src_pad, vqueue_pad);
|
|
}
|
|
|
|
/* We are done */
|
|
gst_object_unref (play_bin->visualisation);
|
|
play_bin->visualisation = pending_visualisation;
|
|
|
|
beach:
|
|
if (vis_sink_pad) {
|
|
gst_object_unref (vis_sink_pad);
|
|
}
|
|
if (vis_src_pad) {
|
|
gst_object_unref (vis_src_pad);
|
|
}
|
|
if (vqueue_pad) {
|
|
gst_object_unref (vqueue_pad);
|
|
}
|
|
if (vis_bin) {
|
|
gst_object_unref (vis_bin);
|
|
}
|
|
|
|
/* Unblock the pad */
|
|
gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
|
|
play_bin);
|
|
}
|
|
|
|
static void
|
|
gst_play_bin_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstPlayBin *play_bin;
|
|
|
|
play_bin = GST_PLAY_BIN (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_VIDEO_SINK:
|
|
if (play_bin->video_sink != NULL) {
|
|
gst_object_unref (play_bin->video_sink);
|
|
}
|
|
play_bin->video_sink = g_value_get_object (value);
|
|
if (play_bin->video_sink != NULL) {
|
|
gst_object_ref (play_bin->video_sink);
|
|
gst_object_sink (GST_OBJECT_CAST (play_bin->video_sink));
|
|
}
|
|
/* when changing the videosink, we just remove the
|
|
* video pipeline from the cache so that it will be
|
|
* regenerated with the new sink element */
|
|
g_hash_table_remove (play_bin->cache, "vbin");
|
|
break;
|
|
case ARG_AUDIO_SINK:
|
|
if (play_bin->audio_sink != NULL) {
|
|
gst_object_unref (play_bin->audio_sink);
|
|
}
|
|
play_bin->audio_sink = g_value_get_object (value);
|
|
if (play_bin->audio_sink != NULL) {
|
|
gst_object_ref (play_bin->audio_sink);
|
|
gst_object_sink (GST_OBJECT_CAST (play_bin->audio_sink));
|
|
}
|
|
g_hash_table_remove (play_bin->cache, "abin");
|
|
break;
|
|
case ARG_VIS_PLUGIN:
|
|
{
|
|
GstElement *pending_visualisation =
|
|
GST_ELEMENT_CAST (g_value_get_object (value));
|
|
|
|
/* Take ownership */
|
|
if (pending_visualisation) {
|
|
gst_object_ref (pending_visualisation);
|
|
gst_object_sink (pending_visualisation);
|
|
}
|
|
|
|
/* Do we already have a visualisation change pending ? */
|
|
GST_OBJECT_LOCK (play_bin);
|
|
if (play_bin->pending_visualisation) {
|
|
gst_object_unref (play_bin->pending_visualisation);
|
|
play_bin->pending_visualisation = pending_visualisation;
|
|
GST_OBJECT_UNLOCK (play_bin);
|
|
} else {
|
|
GST_OBJECT_UNLOCK (play_bin);
|
|
/* Was there a visualisation already set ? */
|
|
if (play_bin->visualisation != NULL) {
|
|
GstBin *vis_bin = NULL;
|
|
|
|
vis_bin =
|
|
GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST
|
|
(play_bin->visualisation)));
|
|
|
|
/* Check if the visualisation is already in a bin */
|
|
if (GST_IS_BIN (vis_bin)) {
|
|
GstPad *vis_sink_pad = NULL, *tee_pad = NULL;
|
|
|
|
/* Now get tee pad and block it async */
|
|
vis_sink_pad = gst_element_get_static_pad (play_bin->visualisation,
|
|
"sink");
|
|
if (!GST_IS_PAD (vis_sink_pad)) {
|
|
goto beach;
|
|
}
|
|
tee_pad = gst_pad_get_peer (vis_sink_pad);
|
|
if (!GST_IS_PAD (tee_pad)) {
|
|
goto beach;
|
|
}
|
|
|
|
play_bin->pending_visualisation = pending_visualisation;
|
|
/* Block with callback */
|
|
gst_pad_set_blocked_async (tee_pad, TRUE, gst_play_bin_vis_blocked,
|
|
play_bin);
|
|
beach:
|
|
if (vis_sink_pad) {
|
|
gst_object_unref (vis_sink_pad);
|
|
}
|
|
if (tee_pad) {
|
|
gst_object_unref (tee_pad);
|
|
}
|
|
gst_object_unref (vis_bin);
|
|
} else {
|
|
play_bin->visualisation = pending_visualisation;
|
|
}
|
|
} else {
|
|
play_bin->visualisation = pending_visualisation;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case ARG_VOLUME:
|
|
play_bin->volume = g_value_get_double (value);
|
|
if (play_bin->volume_element) {
|
|
g_object_set (G_OBJECT (play_bin->volume_element), "volume",
|
|
play_bin->volume, NULL);
|
|
}
|
|
break;
|
|
case ARG_FONT_DESC:
|
|
g_free (play_bin->font_desc);
|
|
play_bin->font_desc = g_strdup (g_value_get_string (value));
|
|
if (play_bin->textoverlay_element) {
|
|
g_object_set (G_OBJECT (play_bin->textoverlay_element),
|
|
"font-desc", g_value_get_string (value), NULL);
|
|
}
|
|
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 *play_bin;
|
|
|
|
play_bin = GST_PLAY_BIN (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_VIDEO_SINK:
|
|
g_value_set_object (value, play_bin->video_sink);
|
|
break;
|
|
case ARG_AUDIO_SINK:
|
|
g_value_set_object (value, play_bin->audio_sink);
|
|
break;
|
|
case ARG_VIS_PLUGIN:
|
|
g_value_set_object (value, play_bin->visualisation);
|
|
break;
|
|
case ARG_VOLUME:
|
|
g_value_set_double (value, play_bin->volume);
|
|
break;
|
|
case ARG_FRAME:{
|
|
GstBuffer *cur_frame = NULL;
|
|
|
|
gst_buffer_replace (&cur_frame, play_bin->frame);
|
|
gst_value_take_buffer (value, cur_frame);
|
|
break;
|
|
}
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* signal fired when the identity has received a new buffer. This is used for
|
|
* making screenshots.
|
|
*/
|
|
static void
|
|
handoff (GstElement * identity, GstBuffer * frame, gpointer data)
|
|
{
|
|
GstPlayBin *play_bin = GST_PLAY_BIN (data);
|
|
|
|
/* applications need to know the buffer caps,
|
|
* make sure they are always set on the frame */
|
|
if (GST_BUFFER_CAPS (frame) == NULL) {
|
|
GstPad *pad;
|
|
|
|
if ((pad = gst_element_get_static_pad (identity, "sink"))) {
|
|
gst_buffer_set_caps (frame, GST_PAD_CAPS (pad));
|
|
gst_object_unref (pad);
|
|
}
|
|
}
|
|
|
|
gst_buffer_replace (&play_bin->frame, frame);
|
|
}
|
|
|
|
static void
|
|
post_missing_element_message (GstPlayBin * playbin, const gchar * name)
|
|
{
|
|
GstMessage *msg;
|
|
|
|
msg = gst_missing_element_message_new (GST_ELEMENT_CAST (playbin), name);
|
|
gst_element_post_message (GST_ELEMENT_CAST (playbin), msg);
|
|
}
|
|
|
|
/* make the element (bin) that contains the elements needed to perform
|
|
* video display. We connect a handoff signal to identity so that we
|
|
* can grab snapshots. Identity's sinkpad is ghosted to vbin.
|
|
*
|
|
* +-------------------------------------------------------------+
|
|
* | vbin |
|
|
* | +--------+ +----------+ +----------+ +---------+ |
|
|
* | |identity| |colorspace| |videoscale| |videosink| |
|
|
* | +-sink src-sink src-sink src-sink | |
|
|
* | | +---+----+ +----------+ +----------+ +---------+ |
|
|
* sink-+ | |
|
|
* +----------|--------------------------------------------------+
|
|
* handoff
|
|
*/
|
|
static GstElement *
|
|
gen_video_element (GstPlayBin * play_bin)
|
|
{
|
|
GstElement *element;
|
|
GstElement *conv;
|
|
|
|
GstElement *scale;
|
|
GstElement *sink;
|
|
GstElement *identity;
|
|
GstPad *pad;
|
|
|
|
/* first see if we have it in the cache */
|
|
element = g_hash_table_lookup (play_bin->cache, "vbin");
|
|
if (element != NULL) {
|
|
return element;
|
|
}
|
|
|
|
if (play_bin->video_sink) {
|
|
sink = play_bin->video_sink;
|
|
} else {
|
|
sink = gst_element_factory_make ("autovideosink", "videosink");
|
|
if (sink == NULL) {
|
|
sink = gst_element_factory_make ("xvimagesink", "videosink");
|
|
}
|
|
if (sink == NULL)
|
|
goto no_sinks;
|
|
}
|
|
gst_object_ref (sink);
|
|
g_hash_table_insert (play_bin->cache, "video_sink", sink);
|
|
|
|
/* create a bin to hold objects, as we create them we add them to this bin so
|
|
* that when something goes wrong we only need to unref the bin */
|
|
element = gst_bin_new ("vbin");
|
|
gst_bin_add (GST_BIN_CAST (element), sink);
|
|
|
|
conv = gst_element_factory_make ("ffmpegcolorspace", "vconv");
|
|
if (conv == NULL)
|
|
goto no_colorspace;
|
|
gst_bin_add (GST_BIN_CAST (element), conv);
|
|
|
|
scale = gst_element_factory_make ("videoscale", "vscale");
|
|
if (scale == NULL)
|
|
goto no_videoscale;
|
|
gst_bin_add (GST_BIN_CAST (element), scale);
|
|
|
|
identity = gst_element_factory_make ("identity", "id");
|
|
g_object_set (identity, "silent", TRUE, NULL);
|
|
g_signal_connect (identity, "handoff", G_CALLBACK (handoff), play_bin);
|
|
gst_bin_add (GST_BIN_CAST (element), identity);
|
|
|
|
gst_element_link_pads (identity, "src", conv, "sink");
|
|
gst_element_link_pads (conv, "src", scale, "sink");
|
|
/* be more careful with the pad from the custom sink element, it might not
|
|
* be named 'sink' */
|
|
if (!gst_element_link_pads (scale, "src", sink, NULL))
|
|
goto link_failed;
|
|
|
|
pad = gst_element_get_static_pad (identity, "sink");
|
|
gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
|
|
gst_object_unref (pad);
|
|
|
|
gst_element_set_state (element, GST_STATE_READY);
|
|
|
|
/* since we're gonna add it to a bin but don't want to lose it,
|
|
* we keep a reference. */
|
|
gst_object_ref (element);
|
|
g_hash_table_insert (play_bin->cache, "vbin", element);
|
|
|
|
return element;
|
|
|
|
/* ERRORS */
|
|
no_sinks:
|
|
{
|
|
post_missing_element_message (play_bin, "autovideosink");
|
|
GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
|
|
(_("Both autovideosink and xvimagesink elements are missing.")),
|
|
(NULL));
|
|
return NULL;
|
|
}
|
|
no_colorspace:
|
|
{
|
|
post_missing_element_message (play_bin, "ffmpegcolorspace");
|
|
GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
|
|
(_("Missing element '%s' - check your GStreamer installation."),
|
|
"ffmpegcolorspace"), (NULL));
|
|
gst_object_unref (element);
|
|
return NULL;
|
|
}
|
|
|
|
no_videoscale:
|
|
{
|
|
post_missing_element_message (play_bin, "videoscale");
|
|
GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
|
|
(_("Missing element '%s' - check your GStreamer installation."),
|
|
"videoscale"), ("possibly a liboil version mismatch?"));
|
|
gst_object_unref (element);
|
|
return NULL;
|
|
}
|
|
link_failed:
|
|
{
|
|
GST_ELEMENT_ERROR (play_bin, CORE, PAD,
|
|
(NULL), ("Failed to configure the video sink."));
|
|
gst_object_unref (element);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* make an element for playback of video with subtitles embedded.
|
|
*
|
|
* +--------------------------------------------------+
|
|
* | tbin +-------------+ |
|
|
* | +-----+ | textoverlay | +------+ |
|
|
* | | csp | +--video_sink | | vbin | |
|
|
* video_sink-sink src+ +-text_sink src---sink | |
|
|
* | +-----+ | +-------------+ +------+ |
|
|
* text_sink-------------+ |
|
|
* +--------------------------------------------------+
|
|
*
|
|
* If there is no subtitle renderer this function will simply return the
|
|
* videosink without the text_sink pad.
|
|
*/
|
|
static GstElement *
|
|
add_text_element (GstPlayBin * play_bin, GstElement * vbin)
|
|
{
|
|
GstElement *element, *csp, *overlay;
|
|
GstPad *pad;
|
|
|
|
/* Text overlay */
|
|
overlay = gst_element_factory_make ("textoverlay", "overlay");
|
|
|
|
/* If no overlay return the video bin without subtitle support. */
|
|
if (!overlay)
|
|
goto no_overlay;
|
|
|
|
/* Create our bin */
|
|
element = gst_bin_new ("textbin");
|
|
|
|
/* Set some parameters */
|
|
g_object_set (G_OBJECT (overlay),
|
|
"halign", "center", "valign", "bottom", NULL);
|
|
if (play_bin->font_desc) {
|
|
g_object_set (G_OBJECT (overlay), "font-desc", play_bin->font_desc, NULL);
|
|
}
|
|
|
|
/* Take a ref */
|
|
play_bin->textoverlay_element = GST_ELEMENT_CAST (gst_object_ref (overlay));
|
|
|
|
/* we know this will succeed, as the video bin already created one before */
|
|
csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
|
|
|
|
/* Add our elements */
|
|
gst_bin_add_many (GST_BIN_CAST (element), csp, overlay, vbin, NULL);
|
|
|
|
/* Link */
|
|
gst_element_link_pads (csp, "src", overlay, "video_sink");
|
|
gst_element_link_pads (overlay, "src", vbin, "sink");
|
|
|
|
/* Add ghost pads on the subtitle bin */
|
|
pad = gst_element_get_static_pad (overlay, "text_sink");
|
|
gst_element_add_pad (element, gst_ghost_pad_new ("text_sink", pad));
|
|
gst_object_unref (pad);
|
|
|
|
pad = gst_element_get_static_pad (csp, "sink");
|
|
gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
|
|
gst_object_unref (pad);
|
|
|
|
/* If the vbin provides a subpicture sink pad, ghost it too */
|
|
pad = gst_element_get_static_pad (vbin, "subpicture_sink");
|
|
if (pad) {
|
|
gst_element_add_pad (element, gst_ghost_pad_new ("subpicture_sink", pad));
|
|
gst_object_unref (pad);
|
|
}
|
|
|
|
/* Set state to READY */
|
|
gst_element_set_state (element, GST_STATE_READY);
|
|
|
|
return element;
|
|
|
|
/* ERRORS */
|
|
no_overlay:
|
|
{
|
|
post_missing_element_message (play_bin, "textoverlay");
|
|
GST_WARNING_OBJECT (play_bin,
|
|
"No overlay (pango) element, subtitles disabled");
|
|
return vbin;
|
|
}
|
|
}
|
|
|
|
/* make an element for rendering DVD subpictures onto output video
|
|
*
|
|
* +---------------------------------------------+
|
|
* | tbin +--------+ |
|
|
* | +-----+ | | +------+ |
|
|
* | | csp | src-videosink | | vbin | |
|
|
* video_sink-sink src+ | src-sink | |
|
|
* | +-----+ +subpicture | +------+ |
|
|
* subpicture_pad--------+ +--------+ |
|
|
* +---------- ----------------------------------+
|
|
*
|
|
*/
|
|
static GstElement *
|
|
add_spu_element (GstPlayBin * play_bin, GstElement * vbin)
|
|
{
|
|
GstElement *element, *csp, *overlay;
|
|
GstPad *pad;
|
|
|
|
/* DVD spu overlay */
|
|
GST_DEBUG_OBJECT (play_bin, "Attempting to insert DVD SPU element");
|
|
|
|
overlay = gst_element_factory_make ("dvdspu", "overlay");
|
|
|
|
/* If no overlay return the video bin without subpicture support. */
|
|
if (!overlay)
|
|
goto no_overlay;
|
|
|
|
/* Create our bin */
|
|
element = gst_bin_new ("spubin");
|
|
|
|
/* Take a ref */
|
|
play_bin->spu_element = GST_ELEMENT_CAST (gst_object_ref (overlay));
|
|
|
|
/* we know this will succeed, as the video bin already created one before */
|
|
csp = gst_element_factory_make ("ffmpegcolorspace", "spucsp");
|
|
|
|
/* Add our elements */
|
|
gst_bin_add_many (GST_BIN_CAST (element), csp, overlay, vbin, NULL);
|
|
|
|
/* Link */
|
|
gst_element_link_pads (csp, "src", overlay, "video");
|
|
gst_element_link_pads (overlay, "src", vbin, "sink");
|
|
|
|
/* Add ghost pad on the subpicture bin so it looks like vbin */
|
|
pad = gst_element_get_static_pad (csp, "sink");
|
|
gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
|
|
gst_object_unref (pad);
|
|
|
|
pad = gst_element_get_static_pad (overlay, "subpicture");
|
|
gst_element_add_pad (element, gst_ghost_pad_new ("subpicture_sink", pad));
|
|
gst_object_unref (pad);
|
|
|
|
/* Set state to READY */
|
|
gst_element_set_state (element, GST_STATE_READY);
|
|
|
|
return element;
|
|
|
|
/* ERRORS */
|
|
no_overlay:
|
|
{
|
|
post_missing_element_message (play_bin, "dvdspu");
|
|
GST_WARNING_OBJECT (play_bin,
|
|
"No DVD overlay (dvdspu) element. "
|
|
"menu highlight/subtitles unavailable");
|
|
return vbin;
|
|
}
|
|
}
|
|
|
|
/* make the element (bin) that contains the elements needed to perform
|
|
* audio playback.
|
|
*
|
|
* +-------------------------------------------------------------+
|
|
* | abin |
|
|
* | +---------+ +----------+ +---------+ +---------+ |
|
|
* | |audioconv| |audioscale| | volume | |audiosink| |
|
|
* | +-sink src-sink src-sink src-sink | |
|
|
* | | +---------+ +----------+ +---------+ +---------+ |
|
|
* sink-+ |
|
|
* +-------------------------------------------------------------+
|
|
*/
|
|
static GstElement *
|
|
gen_audio_element (GstPlayBin * play_bin)
|
|
{
|
|
gboolean res;
|
|
GstElement *element;
|
|
GstElement *conv;
|
|
GstElement *scale;
|
|
GstElement *sink;
|
|
GstElement *volume;
|
|
GstPad *pad;
|
|
|
|
element = g_hash_table_lookup (play_bin->cache, "abin");
|
|
if (element != NULL)
|
|
return element;
|
|
|
|
if (play_bin->audio_sink) {
|
|
sink = play_bin->audio_sink;
|
|
} else {
|
|
sink = gst_element_factory_make ("autoaudiosink", "audiosink");
|
|
if (sink == NULL) {
|
|
sink = gst_element_factory_make ("alsasink", "audiosink");
|
|
}
|
|
if (sink == NULL)
|
|
goto no_sinks;
|
|
|
|
play_bin->audio_sink = GST_ELEMENT_CAST (gst_object_ref (sink));
|
|
}
|
|
|
|
gst_object_ref (sink);
|
|
g_hash_table_insert (play_bin->cache, "audio_sink", sink);
|
|
|
|
element = gst_bin_new ("abin");
|
|
gst_bin_add (GST_BIN_CAST (element), sink);
|
|
|
|
conv = gst_element_factory_make ("audioconvert", "aconv");
|
|
if (conv == NULL)
|
|
goto no_audioconvert;
|
|
gst_bin_add (GST_BIN_CAST (element), conv);
|
|
|
|
scale = gst_element_factory_make ("audioresample", "aresample");
|
|
if (scale == NULL)
|
|
goto no_audioresample;
|
|
gst_bin_add (GST_BIN_CAST (element), scale);
|
|
|
|
volume = gst_element_factory_make ("volume", "volume");
|
|
if (volume == NULL)
|
|
goto no_volume;
|
|
g_object_set (G_OBJECT (volume), "volume", play_bin->volume, NULL);
|
|
play_bin->volume_element = volume;
|
|
gst_bin_add (GST_BIN_CAST (element), volume);
|
|
|
|
res = gst_element_link_pads (conv, "src", scale, "sink");
|
|
res &= gst_element_link_pads (scale, "src", volume, "sink");
|
|
res &= gst_element_link_pads (volume, "src", sink, NULL);
|
|
if (!res)
|
|
goto link_failed;
|
|
|
|
pad = gst_element_get_static_pad (conv, "sink");
|
|
gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
|
|
gst_object_unref (pad);
|
|
|
|
gst_element_set_state (element, GST_STATE_READY);
|
|
|
|
/* since we're gonna add it to a bin but don't want to lose it,
|
|
* we keep a reference. */
|
|
gst_object_ref (element);
|
|
g_hash_table_insert (play_bin->cache, "abin", element);
|
|
|
|
return element;
|
|
|
|
/* ERRORS */
|
|
no_sinks:
|
|
{
|
|
post_missing_element_message (play_bin, "autoaudiosink");
|
|
GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
|
|
(_("Both autoaudiosink and alsasink elements are missing.")), (NULL));
|
|
return NULL;
|
|
}
|
|
no_audioconvert:
|
|
{
|
|
post_missing_element_message (play_bin, "audioconvert");
|
|
GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
|
|
(_("Missing element '%s' - check your GStreamer installation."),
|
|
"audioconvert"), ("possibly a liboil version mismatch?"));
|
|
gst_object_unref (element);
|
|
return NULL;
|
|
}
|
|
no_audioresample:
|
|
{
|
|
post_missing_element_message (play_bin, "audioresample");
|
|
GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
|
|
(_("Missing element '%s' - check your GStreamer installation."),
|
|
"audioresample"), ("possibly a liboil version mismatch?"));
|
|
gst_object_unref (element);
|
|
return NULL;
|
|
}
|
|
no_volume:
|
|
{
|
|
post_missing_element_message (play_bin, "volume");
|
|
GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
|
|
(_("Missing element '%s' - check your GStreamer installation."),
|
|
"volume"), ("possibly a liboil version mismatch?"));
|
|
gst_object_unref (element);
|
|
return NULL;
|
|
}
|
|
link_failed:
|
|
{
|
|
GST_ELEMENT_ERROR (play_bin, CORE, PAD,
|
|
(NULL), ("Failed to configure the audio sink."));
|
|
gst_object_unref (element);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* make the element (bin) that contains the elements needed to perform
|
|
* visualisation ouput. The idea is to split the audio using tee, then
|
|
* sending the output to the regular audio bin and the other output to
|
|
* the vis plugin that transforms it into a video that is rendered with the
|
|
* normal video bin. The video and audio bins are run in threads to make sure
|
|
* they don't block eachother.
|
|
*
|
|
* +-----------------------------------------------------------------------+
|
|
* | visbin |
|
|
* | +------+ +--------+ +----------------+ |
|
|
* | | tee | | aqueue | | abin ... | |
|
|
* | +-sink src-sink src-sink | |
|
|
* | | | | +--------+ +----------------+ |
|
|
* | | | | |
|
|
* | | | | +------+ +------------+ +------+ +-----------+ |
|
|
* | | | | |vqueue| | audioconv | | vis | | vbin ... | |
|
|
* | | | src-sink src-sink + samp src-sink src-sink | |
|
|
* | | | | +------+ +------------+ +------+ +-----------+ |
|
|
* | | | | |
|
|
* | | +------+ |
|
|
* sink-+ |
|
|
* +-----------------------------------------------------------------------+
|
|
*/
|
|
static GstElement *
|
|
gen_vis_element (GstPlayBin * play_bin)
|
|
{
|
|
gboolean res;
|
|
GstElement *element;
|
|
GstElement *tee;
|
|
GstElement *asink;
|
|
GstElement *vsink;
|
|
GstElement *conv;
|
|
GstElement *resamp;
|
|
GstElement *conv2;
|
|
GstElement *vis;
|
|
GstElement *vqueue, *aqueue;
|
|
GstPad *pad, *rpad;
|
|
|
|
/* errors are already posted when these fail. */
|
|
asink = gen_audio_element (play_bin);
|
|
if (!asink)
|
|
return NULL;
|
|
vsink = gen_video_element (play_bin);
|
|
if (!vsink) {
|
|
gst_object_unref (asink);
|
|
return NULL;
|
|
}
|
|
|
|
element = gst_bin_new ("visbin");
|
|
tee = gst_element_factory_make ("tee", "tee");
|
|
|
|
vqueue = gst_element_factory_make ("queue", "vqueue");
|
|
aqueue = gst_element_factory_make ("queue", "aqueue");
|
|
|
|
gst_bin_add (GST_BIN_CAST (element), asink);
|
|
gst_bin_add (GST_BIN_CAST (element), vqueue);
|
|
gst_bin_add (GST_BIN_CAST (element), aqueue);
|
|
gst_bin_add (GST_BIN_CAST (element), vsink);
|
|
gst_bin_add (GST_BIN_CAST (element), tee);
|
|
|
|
conv = gst_element_factory_make ("audioconvert", "aconv");
|
|
if (conv == NULL)
|
|
goto no_audioconvert;
|
|
gst_bin_add (GST_BIN_CAST (element), conv);
|
|
|
|
resamp = gst_element_factory_make ("audioresample", "aresamp");
|
|
if (resamp == NULL)
|
|
goto no_audioresample;
|
|
gst_bin_add (GST_BIN_CAST (element), resamp);
|
|
|
|
conv2 = gst_element_factory_make ("audioconvert", "aconv2");
|
|
if (conv2 == NULL)
|
|
goto no_audioconvert;
|
|
gst_bin_add (GST_BIN_CAST (element), conv2);
|
|
|
|
if (play_bin->visualisation) {
|
|
gst_object_ref (play_bin->visualisation);
|
|
vis = play_bin->visualisation;
|
|
} else {
|
|
vis = gst_element_factory_make ("goom", "vis");
|
|
if (!vis)
|
|
goto no_goom;
|
|
}
|
|
gst_bin_add (GST_BIN_CAST (element), vis);
|
|
|
|
res = gst_element_link_pads (vqueue, "src", conv, "sink");
|
|
res &= gst_element_link_pads (conv, "src", resamp, "sink");
|
|
res &= gst_element_link_pads (resamp, "src", conv2, "sink");
|
|
res &= gst_element_link_pads (conv2, "src", vis, "sink");
|
|
res &= gst_element_link_pads (vis, "src", vsink, "sink");
|
|
if (!res)
|
|
goto link_failed;
|
|
|
|
pad = gst_element_get_static_pad (aqueue, "sink");
|
|
rpad = gst_element_get_request_pad (tee, "src%d");
|
|
gst_pad_link (rpad, pad);
|
|
gst_object_unref (rpad);
|
|
gst_object_unref (pad);
|
|
gst_element_link_pads (aqueue, "src", asink, "sink");
|
|
|
|
pad = gst_element_get_static_pad (vqueue, "sink");
|
|
rpad = gst_element_get_request_pad (tee, "src%d");
|
|
gst_pad_link (rpad, pad);
|
|
gst_object_unref (rpad);
|
|
gst_object_unref (pad);
|
|
|
|
pad = gst_element_get_static_pad (tee, "sink");
|
|
gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
|
|
gst_object_unref (pad);
|
|
|
|
return element;
|
|
|
|
/* ERRORS */
|
|
no_audioconvert:
|
|
{
|
|
post_missing_element_message (play_bin, "audioconvert");
|
|
GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
|
|
(_("Missing element '%s' - check your GStreamer installation."),
|
|
"audioconvert"), ("possibly a liboil version mismatch?"));
|
|
gst_object_unref (element);
|
|
return NULL;
|
|
}
|
|
no_audioresample:
|
|
{
|
|
post_missing_element_message (play_bin, "audioresample");
|
|
GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
|
|
(_("Missing element '%s' - check your GStreamer installation."),
|
|
"audioresample"), (NULL));
|
|
gst_object_unref (element);
|
|
return NULL;
|
|
}
|
|
no_goom:
|
|
{
|
|
post_missing_element_message (play_bin, "goom");
|
|
GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
|
|
(_("Missing element '%s' - check your GStreamer installation."),
|
|
"goom"), (NULL));
|
|
gst_object_unref (element);
|
|
return NULL;
|
|
}
|
|
link_failed:
|
|
{
|
|
GST_ELEMENT_ERROR (play_bin, CORE, PAD,
|
|
(NULL), ("Failed to configure the visualisation element."));
|
|
gst_object_unref (element);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* get rid of all installed sinks */
|
|
static void
|
|
remove_sinks (GstPlayBin * play_bin)
|
|
{
|
|
GList *sinks;
|
|
GstObject *parent;
|
|
GstElement *element;
|
|
GstPad *pad, *peer;
|
|
|
|
if (play_bin->cache == NULL)
|
|
return;
|
|
|
|
GST_DEBUG ("removesinks");
|
|
element = g_hash_table_lookup (play_bin->cache, "abin");
|
|
if (element != NULL) {
|
|
parent = gst_element_get_parent (element);
|
|
if (parent != NULL) {
|
|
/* we remove the element from the parent so that
|
|
* there is no unwanted state change when the parent
|
|
* is disposed */
|
|
play_bin->sinks = g_list_remove (play_bin->sinks, element);
|
|
gst_element_set_state (element, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN_CAST (parent), element);
|
|
gst_object_unref (parent);
|
|
}
|
|
pad = gst_element_get_static_pad (element, "sink");
|
|
if (pad != NULL) {
|
|
peer = gst_pad_get_peer (pad);
|
|
if (peer != NULL) {
|
|
gst_pad_unlink (peer, pad);
|
|
gst_object_unref (peer);
|
|
}
|
|
gst_object_unref (pad);
|
|
}
|
|
}
|
|
element = g_hash_table_lookup (play_bin->cache, "vbin");
|
|
if (element != NULL) {
|
|
parent = gst_element_get_parent (element);
|
|
if (parent != NULL) {
|
|
play_bin->sinks = g_list_remove (play_bin->sinks, element);
|
|
gst_element_set_state (element, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN_CAST (parent), element);
|
|
gst_object_unref (parent);
|
|
}
|
|
pad = gst_element_get_static_pad (element, "sink");
|
|
if (pad != NULL) {
|
|
peer = gst_pad_get_peer (pad);
|
|
if (peer != NULL) {
|
|
gst_pad_unlink (peer, pad);
|
|
gst_object_unref (peer);
|
|
}
|
|
gst_object_unref (pad);
|
|
}
|
|
}
|
|
|
|
for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
|
|
GstElement *element = GST_ELEMENT_CAST (sinks->data);
|
|
GstPad *pad;
|
|
GstPad *peer;
|
|
|
|
pad = gst_element_get_static_pad (element, "sink");
|
|
|
|
GST_LOG ("removing sink %p", element);
|
|
|
|
peer = gst_pad_get_peer (pad);
|
|
if (peer) {
|
|
gst_pad_unlink (peer, pad);
|
|
gst_object_unref (peer);
|
|
}
|
|
gst_object_unref (pad);
|
|
|
|
gst_element_set_state (element, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN_CAST (play_bin), element);
|
|
}
|
|
g_list_free (play_bin->sinks);
|
|
play_bin->sinks = NULL;
|
|
|
|
if (play_bin->visualisation) {
|
|
GstElement *vis_bin;
|
|
|
|
vis_bin =
|
|
GST_ELEMENT_CAST (gst_element_get_parent (play_bin->visualisation));
|
|
|
|
gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
|
|
|
|
if (vis_bin) {
|
|
gst_bin_remove (GST_BIN_CAST (vis_bin), play_bin->visualisation);
|
|
gst_object_unref (vis_bin);
|
|
}
|
|
}
|
|
|
|
if (play_bin->frame) {
|
|
gst_buffer_unref (play_bin->frame);
|
|
play_bin->frame = NULL;
|
|
}
|
|
|
|
if (play_bin->textoverlay_element) {
|
|
gst_object_unref (play_bin->textoverlay_element);
|
|
play_bin->textoverlay_element = NULL;
|
|
}
|
|
}
|
|
|
|
/* loop over the streams and set up the pipeline to play this
|
|
* media file. First we count the number of audio and video streams.
|
|
* If there is no video stream but there exists an audio stream,
|
|
* we install a visualisation pipeline.
|
|
*
|
|
* Also make sure to only connect the first audio and video pad. FIXME
|
|
* this should eventually be handled with a tuner interface so that
|
|
* one can switch the streams.
|
|
*
|
|
* This function takes ownership of @sink.*
|
|
*/
|
|
static gboolean
|
|
add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad,
|
|
GstPad * subtitle_pad)
|
|
{
|
|
GstPad *sinkpad;
|
|
GstPadLinkReturn linkres;
|
|
GstElement *parent;
|
|
GstStateChangeReturn stateret;
|
|
GstState state;
|
|
|
|
g_return_val_if_fail (sink != NULL, FALSE);
|
|
|
|
state = GST_STATE_PAUSED;
|
|
|
|
/* this is only for debugging */
|
|
parent = gst_pad_get_parent_element (srcpad);
|
|
if (parent) {
|
|
GST_DEBUG ("Adding sink %" GST_PTR_FORMAT
|
|
" with state %d (parent: %d, peer: %d)", sink,
|
|
GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
|
|
gst_object_unref (parent);
|
|
}
|
|
gst_bin_add (GST_BIN_CAST (play_bin), sink);
|
|
|
|
/* bring it to the required state so we can link to the peer without
|
|
* breaking the flow */
|
|
stateret = gst_element_set_state (sink, state);
|
|
if (stateret == GST_STATE_CHANGE_FAILURE)
|
|
goto state_failed;
|
|
|
|
/* we found a sink for this stream, now try to install it */
|
|
sinkpad = gst_element_get_static_pad (sink, "sink");
|
|
linkres = gst_pad_link (srcpad, sinkpad);
|
|
gst_object_unref (sinkpad);
|
|
|
|
/* try to link the pad of the sink to the stream */
|
|
if (GST_PAD_LINK_FAILED (linkres))
|
|
goto link_failed;
|
|
|
|
if (GST_IS_PAD (subtitle_pad)) {
|
|
sinkpad = gst_element_get_static_pad (sink, "text_sink");
|
|
linkres = gst_pad_link (subtitle_pad, sinkpad);
|
|
gst_object_unref (sinkpad);
|
|
}
|
|
|
|
/* try to link the subtitle pad of the sink to the stream, this is not
|
|
* fatal. */
|
|
if (GST_PAD_LINK_FAILED (linkres))
|
|
goto subtitle_failed;
|
|
|
|
done:
|
|
/* we got the sink succesfully linked, now keep the sink
|
|
* in our internal list */
|
|
play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
state_failed:
|
|
{
|
|
gst_element_set_state (sink, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN_CAST (play_bin), sink);
|
|
GST_DEBUG_OBJECT (play_bin, "state change failure when adding sink");
|
|
return FALSE;
|
|
}
|
|
link_failed:
|
|
{
|
|
gchar *capsstr;
|
|
GstCaps *caps;
|
|
|
|
/* could not link this stream */
|
|
caps = gst_pad_get_caps (srcpad);
|
|
capsstr = gst_caps_to_string (caps);
|
|
g_warning ("could not link %s: %d", capsstr, linkres);
|
|
GST_DEBUG_OBJECT (play_bin,
|
|
"link failed when adding sink, caps %s, reason %d", capsstr, linkres);
|
|
g_free (capsstr);
|
|
gst_caps_unref (caps);
|
|
|
|
gst_element_set_state (sink, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN_CAST (play_bin), sink);
|
|
return FALSE;
|
|
}
|
|
subtitle_failed:
|
|
{
|
|
GstCaps *caps;
|
|
|
|
/* could not link this stream */
|
|
caps = gst_pad_get_caps (subtitle_pad);
|
|
GST_WARNING_OBJECT (play_bin, "subtitle link failed when adding sink, "
|
|
"caps = %" GST_PTR_FORMAT ", reason %d", caps, linkres);
|
|
gst_caps_unref (caps);
|
|
|
|
/* not fatal */
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
static void
|
|
dummy_blocked_cb (GstPad * pad, gboolean blocked, gpointer user_data)
|
|
{
|
|
}
|
|
|
|
static gboolean
|
|
setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
|
|
{
|
|
GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
|
|
gboolean have_video = FALSE;
|
|
gboolean need_vis = FALSE;
|
|
gboolean need_text = FALSE;
|
|
gboolean need_spu = FALSE;
|
|
GstPad *textsrcpad = NULL, *pad = NULL, *origtextsrcpad = NULL;
|
|
GstElement *sink;
|
|
gboolean res = TRUE;
|
|
|
|
/* get rid of existing sinks */
|
|
if (play_bin->sinks) {
|
|
remove_sinks (play_bin);
|
|
}
|
|
GST_DEBUG_OBJECT (play_base_bin, "setupsinks");
|
|
|
|
/* find out what to do */
|
|
have_video = (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0);
|
|
need_spu = (group->type[GST_STREAM_TYPE_SUBPICTURE - 1].npads != 0);
|
|
|
|
if (have_video && group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
|
|
need_text = TRUE;
|
|
} else if (!have_video &&
|
|
group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
|
|
play_bin->visualisation != NULL) {
|
|
need_vis = TRUE;
|
|
}
|
|
|
|
/* now actually connect everything */
|
|
|
|
/* link audio */
|
|
if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
|
|
if (need_vis) {
|
|
sink = gen_vis_element (play_bin);
|
|
} else {
|
|
sink = gen_audio_element (play_bin);
|
|
}
|
|
if (!sink)
|
|
return FALSE;
|
|
|
|
pad =
|
|
gst_element_get_static_pad (group->type[GST_STREAM_TYPE_AUDIO -
|
|
1].preroll, "src");
|
|
res = add_sink (play_bin, sink, pad, NULL);
|
|
gst_object_unref (pad);
|
|
}
|
|
|
|
/* link video */
|
|
if (have_video) {
|
|
/* Create the video rendering bin, error is posted when this fails. */
|
|
sink = gen_video_element (play_bin);
|
|
if (!sink)
|
|
return FALSE;
|
|
if (need_spu) {
|
|
sink = add_spu_element (play_bin, sink);
|
|
}
|
|
|
|
if (need_text) {
|
|
GstObject *parent = NULL, *grandparent = NULL;
|
|
GstPad *ghost = NULL;
|
|
|
|
/* Add the subtitle overlay element into the video sink */
|
|
sink = add_text_element (play_bin, sink);
|
|
|
|
/* Link the incoming subtitle stream into the output bin */
|
|
textsrcpad =
|
|
gst_element_get_static_pad (group->type[GST_STREAM_TYPE_TEXT -
|
|
1].preroll, "src");
|
|
|
|
/* This pad is from subtitle-bin, we need to create a ghost pad to have
|
|
common grandparents */
|
|
parent = gst_object_get_parent (GST_OBJECT_CAST (textsrcpad));
|
|
if (!parent) {
|
|
GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no parent !");
|
|
gst_object_unref (textsrcpad);
|
|
textsrcpad = NULL;
|
|
goto beach;
|
|
}
|
|
|
|
grandparent = gst_object_get_parent (parent);
|
|
if (!grandparent) {
|
|
GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no grandparent !");
|
|
gst_object_unref (parent);
|
|
gst_object_unref (textsrcpad);
|
|
textsrcpad = NULL;
|
|
goto beach;
|
|
}
|
|
|
|
/* We ghost the pad on subtitle_bin only, if the text pad is from the
|
|
media demuxer we keep it as it is */
|
|
if (!GST_IS_PLAY_BIN (grandparent)) {
|
|
GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from a subtitle "
|
|
"file, ghosting to a suitable hierarchy");
|
|
/* Block the pad first, because as soon as we add a ghostpad, the queue
|
|
* will try and start pushing */
|
|
gst_pad_set_blocked_async (textsrcpad, TRUE, dummy_blocked_cb, NULL);
|
|
origtextsrcpad = gst_object_ref (textsrcpad);
|
|
|
|
ghost = gst_ghost_pad_new ("text_src", textsrcpad);
|
|
if (!GST_IS_PAD (ghost)) {
|
|
GST_WARNING_OBJECT (textsrcpad, "failed creating ghost pad for "
|
|
"subtitle-bin");
|
|
gst_object_unref (parent);
|
|
gst_object_unref (grandparent);
|
|
gst_object_unref (textsrcpad);
|
|
textsrcpad = NULL;
|
|
goto beach;
|
|
}
|
|
|
|
gst_pad_set_active (ghost, TRUE);
|
|
if (gst_element_add_pad (GST_ELEMENT_CAST (grandparent), ghost)) {
|
|
gst_object_unref (textsrcpad);
|
|
textsrcpad = gst_object_ref (ghost);
|
|
} else {
|
|
GST_WARNING_OBJECT (ghost, "failed adding ghost pad on subtitle-bin");
|
|
gst_pad_set_active (ghost, FALSE);
|
|
gst_object_unref (ghost);
|
|
gst_object_unref (textsrcpad);
|
|
textsrcpad = NULL;
|
|
}
|
|
} else {
|
|
GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from the demuxer "
|
|
"no changes to hierarchy needed");
|
|
}
|
|
|
|
gst_object_unref (parent);
|
|
gst_object_unref (grandparent);
|
|
}
|
|
beach:
|
|
if (!sink)
|
|
return FALSE;
|
|
pad =
|
|
gst_element_get_static_pad (group->type[GST_STREAM_TYPE_VIDEO -
|
|
1].preroll, "src");
|
|
res = add_sink (play_bin, sink, pad, textsrcpad);
|
|
gst_object_unref (pad);
|
|
if (textsrcpad)
|
|
gst_object_unref (textsrcpad);
|
|
if (origtextsrcpad) {
|
|
gst_pad_set_blocked_async (origtextsrcpad, FALSE, dummy_blocked_cb, NULL);
|
|
gst_object_unref (origtextsrcpad);
|
|
}
|
|
|
|
/* If we have a DVD subpicture stream, link it to the SPU now */
|
|
if (need_spu) {
|
|
GstPad *subpic_pad;
|
|
GstPad *spu_sink_pad;
|
|
|
|
subpic_pad =
|
|
gst_element_get_static_pad (group->type[GST_STREAM_TYPE_SUBPICTURE
|
|
- 1].preroll, "src");
|
|
spu_sink_pad = gst_element_get_static_pad (sink, "subpicture_sink");
|
|
if (subpic_pad && spu_sink_pad) {
|
|
GST_LOG_OBJECT (play_bin, "Linking DVD subpicture stream onto SPU");
|
|
gst_pad_set_blocked_async (subpic_pad, TRUE, dummy_blocked_cb, NULL);
|
|
if (gst_pad_link (subpic_pad, spu_sink_pad) != GST_PAD_LINK_OK) {
|
|
GST_WARNING_OBJECT (play_bin,
|
|
"Failed to link DVD subpicture stream onto SPU");
|
|
}
|
|
gst_pad_set_blocked_async (subpic_pad, FALSE, dummy_blocked_cb, NULL);
|
|
}
|
|
if (subpic_pad)
|
|
gst_object_unref (subpic_pad);
|
|
if (spu_sink_pad)
|
|
gst_object_unref (spu_sink_pad);
|
|
}
|
|
}
|
|
|
|
/* remove the sinks now, pipeline get_state will now wait for the
|
|
* sinks to preroll */
|
|
if (play_bin->fakesink) {
|
|
gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
|
|
play_bin->fakesink = NULL;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
playbin_set_subtitles_visible (GstPlayBaseBin * play_base_bin, gboolean visible)
|
|
{
|
|
GstPlayBin *playbin = GST_PLAY_BIN (play_base_bin);
|
|
|
|
/* we're ignoring the case of someone setting the 'current-text' property
|
|
* before textoverlay is set up (which is probably okay, since playbasebin
|
|
* will just select the first subtitle stream as active stream regardless) */
|
|
if (playbin->textoverlay_element != NULL) {
|
|
GST_LOG_OBJECT (playbin, "setting subtitle visibility to %d", visible);
|
|
g_object_set (playbin->textoverlay_element, "silent", !visible, NULL);
|
|
}
|
|
}
|
|
|
|
static void
|
|
playbin_set_audio_mute (GstPlayBaseBin * play_base_bin, gboolean mute)
|
|
{
|
|
GstPlayBin *playbin = GST_PLAY_BIN (play_base_bin);
|
|
|
|
if (playbin->volume_element) {
|
|
g_object_set (G_OBJECT (playbin->volume_element), "mute", mute, NULL);
|
|
}
|
|
}
|
|
|
|
/* Send an event to our sinks until one of them works; don't then send to the
|
|
* remaining sinks (unlike GstBin)
|
|
*/
|
|
static gboolean
|
|
gst_play_bin_send_event_to_sink (GstPlayBin * play_bin, GstEvent * event)
|
|
{
|
|
GList *sinks = play_bin->sinks;
|
|
gboolean res = TRUE;
|
|
|
|
while (sinks) {
|
|
GstElement *sink = GST_ELEMENT_CAST (sinks->data);
|
|
|
|
gst_event_ref (event);
|
|
if ((res = gst_element_send_event (sink, event))) {
|
|
GST_DEBUG_OBJECT (play_bin,
|
|
"Sent event succesfully to sink %" GST_PTR_FORMAT, sink);
|
|
break;
|
|
}
|
|
GST_DEBUG_OBJECT (play_bin,
|
|
"Event failed when sent to sink %" GST_PTR_FORMAT, sink);
|
|
|
|
sinks = g_list_next (sinks);
|
|
}
|
|
|
|
gst_event_unref (event);
|
|
|
|
return res;
|
|
}
|
|
|
|
/* We only want to send the event to a single sink (overriding GstBin's
|
|
* behaviour), but we want to keep GstPipeline's behaviour - wrapping seek
|
|
* events appropriately. So, this is a messy duplication of code. */
|
|
static gboolean
|
|
gst_play_bin_send_event (GstElement * element, GstEvent * event)
|
|
{
|
|
gboolean res = FALSE;
|
|
GstEventType event_type = GST_EVENT_TYPE (event);
|
|
|
|
switch (event_type) {
|
|
case GST_EVENT_SEEK:
|
|
GST_DEBUG_OBJECT (element, "Sending seek event to a sink");
|
|
res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
|
|
break;
|
|
default:
|
|
res = parent_class->send_event (element, event);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
value_list_append_structure_list (GValue * list_val, GstStructure ** first,
|
|
GList * structure_list)
|
|
{
|
|
GList *l;
|
|
|
|
for (l = structure_list; l != NULL; l = l->next) {
|
|
GValue val = { 0, };
|
|
|
|
if (*first == NULL)
|
|
*first = gst_structure_copy ((GstStructure *) l->data);
|
|
|
|
g_value_init (&val, GST_TYPE_STRUCTURE);
|
|
g_value_take_boxed (&val, gst_structure_copy ((GstStructure *) l->data));
|
|
gst_value_list_append_value (list_val, &val);
|
|
g_value_unset (&val);
|
|
}
|
|
}
|
|
|
|
/* if it's a redirect message with multiple redirect locations we might
|
|
* want to pick a different 'best' location depending on the required
|
|
* bitrates and the connection speed */
|
|
static GstMessage *
|
|
gst_play_bin_handle_redirect_message (GstPlayBin * playbin, GstMessage * msg)
|
|
{
|
|
const GValue *locations_list, *location_val;
|
|
GstMessage *new_msg;
|
|
GstStructure *new_structure = NULL;
|
|
GList *l_good = NULL, *l_neutral = NULL, *l_bad = NULL;
|
|
GValue new_list = { 0, };
|
|
guint size, i;
|
|
GstPlayBaseBin *playbasebin = GST_PLAY_BASE_BIN (playbin);
|
|
guint connection_speed = playbasebin->connection_speed;
|
|
|
|
GST_DEBUG_OBJECT (playbin, "redirect message: %" GST_PTR_FORMAT, msg);
|
|
GST_DEBUG_OBJECT (playbin, "connection speed: %u", connection_speed);
|
|
|
|
if (connection_speed == 0 || msg->structure == NULL)
|
|
return msg;
|
|
|
|
locations_list = gst_structure_get_value (msg->structure, "locations");
|
|
if (locations_list == NULL)
|
|
return msg;
|
|
|
|
size = gst_value_list_get_size (locations_list);
|
|
if (size < 2)
|
|
return msg;
|
|
|
|
/* maintain existing order as much as possible, just sort references
|
|
* with too high a bitrate to the end (the assumption being that if
|
|
* bitrates are given they are given for all interesting streams and
|
|
* that the you-need-at-least-version-xyz redirect has the same bitrate
|
|
* as the lowest referenced redirect alternative) */
|
|
for (i = 0; i < size; ++i) {
|
|
const GstStructure *s;
|
|
gint bitrate = 0;
|
|
|
|
location_val = gst_value_list_get_value (locations_list, i);
|
|
s = (const GstStructure *) g_value_get_boxed (location_val);
|
|
if (!gst_structure_get_int (s, "minimum-bitrate", &bitrate) || bitrate <= 0) {
|
|
GST_DEBUG_OBJECT (playbin, "no bitrate: %" GST_PTR_FORMAT, s);
|
|
l_neutral = g_list_append (l_neutral, (gpointer) s);
|
|
} else if (bitrate > connection_speed) {
|
|
GST_DEBUG_OBJECT (playbin, "bitrate too high: %" GST_PTR_FORMAT, s);
|
|
l_bad = g_list_append (l_bad, (gpointer) s);
|
|
} else if (bitrate <= connection_speed) {
|
|
GST_DEBUG_OBJECT (playbin, "bitrate OK: %" GST_PTR_FORMAT, s);
|
|
l_good = g_list_append (l_good, (gpointer) s);
|
|
}
|
|
}
|
|
|
|
g_value_init (&new_list, GST_TYPE_LIST);
|
|
value_list_append_structure_list (&new_list, &new_structure, l_good);
|
|
value_list_append_structure_list (&new_list, &new_structure, l_neutral);
|
|
value_list_append_structure_list (&new_list, &new_structure, l_bad);
|
|
gst_structure_set_value (new_structure, "locations", &new_list);
|
|
g_value_unset (&new_list);
|
|
|
|
g_list_free (l_good);
|
|
g_list_free (l_neutral);
|
|
g_list_free (l_bad);
|
|
|
|
new_msg = gst_message_new_element (msg->src, new_structure);
|
|
gst_message_unref (msg);
|
|
|
|
GST_DEBUG_OBJECT (playbin, "new redirect message: %" GST_PTR_FORMAT, new_msg);
|
|
return new_msg;
|
|
}
|
|
|
|
static void
|
|
gst_play_bin_handle_message (GstBin * bin, GstMessage * msg)
|
|
{
|
|
if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ELEMENT && msg->structure != NULL
|
|
&& gst_structure_has_name (msg->structure, "redirect")) {
|
|
msg = gst_play_bin_handle_redirect_message (GST_PLAY_BIN (bin), msg);
|
|
}
|
|
|
|
GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_play_bin_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret;
|
|
GstPlayBin *play_bin;
|
|
|
|
play_bin = GST_PLAY_BIN (element);
|
|
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
/* this really is the easiest way to make the state change return
|
|
* ASYNC until we added the sinks */
|
|
if (!play_bin->fakesink) {
|
|
play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
|
|
gst_bin_add (GST_BIN_CAST (play_bin), play_bin->fakesink);
|
|
}
|
|
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:
|
|
/* remember us being a live pipeline */
|
|
play_bin->is_live = (ret == GST_STATE_CHANGE_NO_PREROLL);
|
|
GST_DEBUG_OBJECT (play_bin, "is live: %d", play_bin->is_live);
|
|
break;
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
/* FIXME Release audio device when we implement that */
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
/* remove sinks we added */
|
|
remove_sinks (play_bin);
|
|
/* and there might be a fakesink we need to clean up now */
|
|
if (play_bin->fakesink) {
|
|
gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
|
|
play_bin->fakesink = NULL;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_play_bin_plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
|
|
|
|
return gst_element_register (plugin, "playbin", GST_RANK_NONE,
|
|
GST_TYPE_PLAY_BIN);
|
|
}
|