mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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17bfba09f1
Conflicts: ext/ogg/gstoggdemux.c ext/pango/gsttextoverlay.c gst-libs/gst/audio/gstaudioencoder.c gst-libs/gst/audio/gstbaseaudiosrc.c gst/playback/gstsubtitleoverlay.c gst/videorate/gstvideorate.c
4019 lines
122 KiB
C
4019 lines
122 KiB
C
/* GStreamer
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* Copyright (C) <2006> Edward Hervey <edward@fluendo.com>
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* Copyright (C) <2009> Sebastian Dröge <sebastian.droege@collabora.co.uk>
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* Copyright (C) <2011> Hewlett-Packard Development Company, L.P.
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* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>, Collabora Ltd.
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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-decodebin
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*
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* #GstBin that auto-magically constructs a decoding pipeline using available
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* decoders and demuxers via auto-plugging.
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*
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* decodebin is considered stable now and replaces the old #decodebin element.
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* #uridecodebin uses decodebin internally and is often more convenient to
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* use, as it creates a suitable source element as well.
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*/
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/* Implementation notes:
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*
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* The following section describes how decodebin works internally.
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*
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* The first part of decodebin is its typefind element, which tries
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* to determine the media type of the input stream. If the type is found
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* autoplugging starts.
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*
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* decodebin internally organizes the elements it autoplugged into GstDecodeChains
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* and GstDecodeGroups. A decode chain is a single chain of decoding, this
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* means that if decodebin every autoplugs an element with two+ srcpads
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* (e.g. a demuxer) this will end the chain and everything following this
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* demuxer will be put into decode groups below the chain. Otherwise,
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* if an element has a single srcpad that outputs raw data the decode chain
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* is ended too and a GstDecodePad is stored and blocked.
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*
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* A decode group combines a number of chains that are created by a
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* demuxer element. All those chains are connected through a multiqueue to
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* the demuxer. A new group for the same demuxer is only created if the
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* demuxer has signaled no-more-pads, in which case all following pads
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* create a new chain in the new group.
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*
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* This continues until the top-level decode chain is complete. A decode
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* chain is complete if it either ends with a blocked endpad, if autoplugging
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* stopped because no suitable plugins could be found or if the active group
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* is complete. A decode group on the other hand is complete if all child
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* chains are complete.
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*
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* If this happens at some point, all endpads of all active groups are exposed.
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* For this decodebin adds the endpads, signals no-more-pads and then unblocks
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* them. Now playback starts.
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*
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* If one of the chains that end on a endpad receives EOS decodebin checks
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* if all chains and groups are drained. In that case everything goes into EOS.
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* If there is a chain where the active group is drained but there exist next
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* groups, the active group is hidden (endpads are removed) and the next group
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* is exposed. This means that in some cases more pads may be created even
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* after the initial no-more-pads signal. This happens for example with
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* so-called "chained oggs", most commonly found among ogg/vorbis internet
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* radio streams.
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*
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* Note 1: If we're talking about blocked endpads this really means that the
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* *target* pads of the endpads are blocked. Pads that are exposed to the outside
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* should never ever be blocked!
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*
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* Note 2: If a group is complete and the parent's chain demuxer adds new pads
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* but never signaled no-more-pads this additional pads will be ignored!
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*
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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 <gst/gst-i18n-plugin.h>
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#include <string.h>
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#include <gst/gst.h>
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#include <gst/pbutils/pbutils.h>
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#include "gstplay-marshal.h"
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#include "gstplay-enum.h"
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#include "gstplayback.h"
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#include "gstrawcaps.h"
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/* generic templates */
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static GstStaticPadTemplate decoder_bin_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate decoder_bin_src_template =
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GST_STATIC_PAD_TEMPLATE ("src%d",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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GST_DEBUG_CATEGORY_STATIC (gst_decode_bin_debug);
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#define GST_CAT_DEFAULT gst_decode_bin_debug
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typedef struct _GstPendingPad GstPendingPad;
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typedef struct _GstDecodeElement GstDecodeElement;
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typedef struct _GstDecodeChain GstDecodeChain;
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typedef struct _GstDecodeGroup GstDecodeGroup;
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typedef struct _GstDecodePad GstDecodePad;
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typedef GstGhostPadClass GstDecodePadClass;
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typedef struct _GstDecodeBin GstDecodeBin;
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typedef struct _GstDecodeBinClass GstDecodeBinClass;
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#define GST_TYPE_DECODE_BIN (gst_decode_bin_get_type())
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#define GST_DECODE_BIN_CAST(obj) ((GstDecodeBin*)(obj))
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#define GST_DECODE_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DECODE_BIN,GstDecodeBin))
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#define GST_DECODE_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DECODE_BIN,GstDecodeBinClass))
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#define GST_IS_DECODE_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DECODE_BIN))
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#define GST_IS_DECODE_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DECODE_BIN))
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/**
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* GstDecodeBin:
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*
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* The opaque #GstDecodeBin data structure
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*/
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struct _GstDecodeBin
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{
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GstBin bin; /* we extend GstBin */
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/* properties */
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GstCaps *caps; /* caps on which to stop decoding */
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gchar *encoding; /* encoding of subtitles */
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gboolean use_buffering; /* configure buffering on multiqueues */
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gint low_percent;
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gint high_percent;
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guint max_size_bytes;
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guint max_size_buffers;
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guint64 max_size_time;
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gboolean post_stream_topology;
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GstElement *typefind; /* this holds the typefind object */
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GMutex *expose_lock; /* Protects exposal and removal of groups */
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GstDecodeChain *decode_chain; /* Top level decode chain */
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gint nbpads; /* unique identifier for source pads */
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GMutex *factories_lock;
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guint32 factories_cookie; /* Cookie from last time when factories was updated */
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GList *factories; /* factories we can use for selecting elements */
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GMutex *subtitle_lock; /* Protects changes to subtitles and encoding */
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GList *subtitles; /* List of elements with subtitle-encoding,
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* protected by above mutex! */
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gboolean have_type; /* if we received the have_type signal */
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guint have_type_id; /* signal id for have-type from typefind */
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gboolean async_pending; /* async-start has been emited */
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GMutex *dyn_lock; /* lock protecting pad blocking */
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gboolean shutdown; /* if we are shutting down */
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GList *blocked_pads; /* pads that have set to block */
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gboolean expose_allstreams; /* Whether to expose unknow type streams or not */
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gboolean upstream_seekable; /* if upstream is seekable */
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};
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struct _GstDecodeBinClass
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{
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GstBinClass parent_class;
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/* signal fired when we found a pad that we cannot decode */
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void (*unknown_type) (GstElement * element, GstPad * pad, GstCaps * caps);
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/* signal fired to know if we continue trying to decode the given caps */
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gboolean (*autoplug_continue) (GstElement * element, GstPad * pad,
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GstCaps * caps);
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/* signal fired to get a list of factories to try to autoplug */
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GValueArray *(*autoplug_factories) (GstElement * element, GstPad * pad,
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GstCaps * caps);
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/* signal fired to sort the factories */
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GValueArray *(*autoplug_sort) (GstElement * element, GstPad * pad,
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GstCaps * caps, GValueArray * factories);
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/* signal fired to select from the proposed list of factories */
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GstAutoplugSelectResult (*autoplug_select) (GstElement * element,
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GstPad * pad, GstCaps * caps, GstElementFactory * factory);
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/* fired when the last group is drained */
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void (*drained) (GstElement * element);
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};
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/* signals */
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enum
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{
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SIGNAL_UNKNOWN_TYPE,
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SIGNAL_AUTOPLUG_CONTINUE,
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SIGNAL_AUTOPLUG_FACTORIES,
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SIGNAL_AUTOPLUG_SELECT,
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SIGNAL_AUTOPLUG_SORT,
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SIGNAL_DRAINED,
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LAST_SIGNAL
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};
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/* automatic sizes, while prerolling we buffer up to 2MB, we ignore time
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* and buffers in this case. */
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#define AUTO_PREROLL_SIZE_BYTES 2 * 1024 * 1024
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#define AUTO_PREROLL_SIZE_BUFFERS 0
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#define AUTO_PREROLL_NOT_SEEKABLE_SIZE_TIME 0
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#define AUTO_PREROLL_SEEKABLE_SIZE_TIME 10 * GST_SECOND
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/* whan playing, keep a max of 2MB of data but try to keep the number of buffers
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* as low as possible (try to aim for 5 buffers) */
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#define AUTO_PLAY_SIZE_BYTES 2 * 1024 * 1024
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#define AUTO_PLAY_SIZE_BUFFERS 5
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#define AUTO_PLAY_SIZE_TIME 0
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#define DEFAULT_SUBTITLE_ENCODING NULL
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#define DEFAULT_USE_BUFFERING FALSE
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#define DEFAULT_LOW_PERCENT 10
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#define DEFAULT_HIGH_PERCENT 99
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/* by default we use the automatic values above */
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#define DEFAULT_MAX_SIZE_BYTES 0
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#define DEFAULT_MAX_SIZE_BUFFERS 0
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#define DEFAULT_MAX_SIZE_TIME 0
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#define DEFAULT_POST_STREAM_TOPOLOGY FALSE
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#define DEFAULT_EXPOSE_ALL_STREAMS TRUE
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/* Properties */
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enum
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{
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PROP_0,
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PROP_CAPS,
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PROP_SUBTITLE_ENCODING,
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PROP_SINK_CAPS,
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PROP_USE_BUFFERING,
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PROP_LOW_PERCENT,
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PROP_HIGH_PERCENT,
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PROP_MAX_SIZE_BYTES,
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PROP_MAX_SIZE_BUFFERS,
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PROP_MAX_SIZE_TIME,
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PROP_POST_STREAM_TOPOLOGY,
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PROP_EXPOSE_ALL_STREAMS,
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PROP_LAST
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};
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static GstBinClass *parent_class;
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static guint gst_decode_bin_signals[LAST_SIGNAL] = { 0 };
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static GstStaticCaps default_raw_caps = GST_STATIC_CAPS (DEFAULT_RAW_CAPS);
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static void do_async_start (GstDecodeBin * dbin);
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static void do_async_done (GstDecodeBin * dbin);
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static void type_found (GstElement * typefind, guint probability,
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GstCaps * caps, GstDecodeBin * decode_bin);
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static void decodebin_set_queue_size (GstDecodeBin * dbin,
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GstElement * multiqueue, gboolean preroll);
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static gboolean gst_decode_bin_autoplug_continue (GstElement * element,
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GstPad * pad, GstCaps * caps);
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static GValueArray *gst_decode_bin_autoplug_factories (GstElement *
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element, GstPad * pad, GstCaps * caps);
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static GValueArray *gst_decode_bin_autoplug_sort (GstElement * element,
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GstPad * pad, GstCaps * caps, GValueArray * factories);
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static GstAutoplugSelectResult gst_decode_bin_autoplug_select (GstElement *
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element, GstPad * pad, GstCaps * caps, GstElementFactory * factory);
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static void gst_decode_bin_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_decode_bin_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_decode_bin_set_caps (GstDecodeBin * dbin, GstCaps * caps);
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static GstCaps *gst_decode_bin_get_caps (GstDecodeBin * dbin);
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static void caps_notify_cb (GstPad * pad, GParamSpec * unused,
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GstDecodeChain * chain);
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static GstPad *find_sink_pad (GstElement * element);
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static GstStateChangeReturn gst_decode_bin_change_state (GstElement * element,
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GstStateChange transition);
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#define EXPOSE_LOCK(dbin) G_STMT_START { \
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GST_LOG_OBJECT (dbin, \
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"expose locking from thread %p", \
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g_thread_self ()); \
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g_mutex_lock (GST_DECODE_BIN_CAST(dbin)->expose_lock); \
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GST_LOG_OBJECT (dbin, \
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"expose locked from thread %p", \
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g_thread_self ()); \
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} G_STMT_END
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#define EXPOSE_UNLOCK(dbin) G_STMT_START { \
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GST_LOG_OBJECT (dbin, \
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"expose unlocking from thread %p", \
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g_thread_self ()); \
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g_mutex_unlock (GST_DECODE_BIN_CAST(dbin)->expose_lock); \
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} G_STMT_END
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#define DYN_LOCK(dbin) G_STMT_START { \
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GST_LOG_OBJECT (dbin, \
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"dynlocking from thread %p", \
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g_thread_self ()); \
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g_mutex_lock (GST_DECODE_BIN_CAST(dbin)->dyn_lock); \
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GST_LOG_OBJECT (dbin, \
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"dynlocked from thread %p", \
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g_thread_self ()); \
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} G_STMT_END
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#define DYN_UNLOCK(dbin) G_STMT_START { \
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GST_LOG_OBJECT (dbin, \
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"dynunlocking from thread %p", \
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g_thread_self ()); \
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g_mutex_unlock (GST_DECODE_BIN_CAST(dbin)->dyn_lock); \
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} G_STMT_END
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#define SUBTITLE_LOCK(dbin) G_STMT_START { \
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GST_LOG_OBJECT (dbin, \
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"subtitle locking from thread %p", \
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g_thread_self ()); \
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g_mutex_lock (GST_DECODE_BIN_CAST(dbin)->subtitle_lock); \
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GST_LOG_OBJECT (dbin, \
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"subtitle lock from thread %p", \
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g_thread_self ()); \
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} G_STMT_END
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#define SUBTITLE_UNLOCK(dbin) G_STMT_START { \
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GST_LOG_OBJECT (dbin, \
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"subtitle unlocking from thread %p", \
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g_thread_self ()); \
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g_mutex_unlock (GST_DECODE_BIN_CAST(dbin)->subtitle_lock); \
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} G_STMT_END
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struct _GstPendingPad
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{
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GstPad *pad;
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GstDecodeChain *chain;
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gulong event_probe_id;
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};
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struct _GstDecodeElement
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{
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GstElement *element;
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GstElement *capsfilter; /* Optional capsfilter for Parser/Convert */
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};
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/* GstDecodeGroup
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*
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* Streams belonging to the same group/chain of a media file
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*
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* When changing something here lock the parent chain!
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*/
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struct _GstDecodeGroup
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{
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GstDecodeBin *dbin;
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GstDecodeChain *parent;
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GstElement *multiqueue; /* Used for linking all child chains */
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gulong overrunsig; /* the overrun signal for multiqueue */
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gboolean overrun; /* TRUE if the multiqueue signaled overrun. This
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* means that we should really expose the group */
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gboolean no_more_pads; /* TRUE if the demuxer signaled no-more-pads */
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gboolean drained; /* TRUE if the all children are drained */
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GList *children; /* List of GstDecodeChains in this group */
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GList *reqpads; /* List of RequestPads for multiqueue, there is
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* exactly one RequestPad per child chain */
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};
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struct _GstDecodeChain
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{
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GstDecodeGroup *parent;
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GstDecodeBin *dbin;
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GMutex *lock; /* Protects this chain and its groups */
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GstPad *pad; /* srcpad that caused creation of this chain */
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gboolean demuxer; /* TRUE if elements->data is a demuxer */
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GList *elements; /* All elements in this group, first
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is the latest and most downstream element */
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/* Note: there are only groups if the last element of this chain
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* is a demuxer, otherwise the chain will end with an endpad.
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* The other way around this means, that endpad only exists if this
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* chain doesn't end with a demuxer! */
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GstDecodeGroup *active_group; /* Currently active group */
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GList *next_groups; /* head is newest group, tail is next group.
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a new group will be created only if the head
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group had no-more-pads. If it's only exposed
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all new pads will be ignored! */
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GList *pending_pads; /* Pads that have no fixed caps yet */
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GstDecodePad *endpad; /* Pad of this chain that could be exposed */
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gboolean deadend; /* This chain is incomplete and can't be completed,
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e.g. no suitable decoder could be found
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e.g. stream got EOS without buffers
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*/
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GstCaps *endcaps; /* Caps that were used when linking to the endpad
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or that resulted in the deadend
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*/
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/* FIXME: This should be done directly via a thread! */
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GList *old_groups; /* Groups that should be freed later */
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};
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static void gst_decode_chain_free (GstDecodeChain * chain);
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static GstDecodeChain *gst_decode_chain_new (GstDecodeBin * dbin,
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GstDecodeGroup * group, GstPad * pad);
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static void gst_decode_group_hide (GstDecodeGroup * group);
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static void gst_decode_group_free (GstDecodeGroup * group);
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static GstDecodeGroup *gst_decode_group_new (GstDecodeBin * dbin,
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GstDecodeChain * chain);
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static gboolean gst_decode_chain_is_complete (GstDecodeChain * chain);
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static gboolean gst_decode_chain_expose (GstDecodeChain * chain,
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GList ** endpads, gboolean * missing_plugin);
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static gboolean gst_decode_chain_is_drained (GstDecodeChain * chain);
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static gboolean gst_decode_group_is_complete (GstDecodeGroup * group);
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static GstPad *gst_decode_group_control_demuxer_pad (GstDecodeGroup * group,
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GstPad * pad);
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static gboolean gst_decode_group_is_drained (GstDecodeGroup * group);
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static gboolean gst_decode_bin_expose (GstDecodeBin * dbin);
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#define CHAIN_MUTEX_LOCK(chain) G_STMT_START { \
|
|
GST_LOG_OBJECT (chain->dbin, \
|
|
"locking chain %p from thread %p", \
|
|
chain, g_thread_self ()); \
|
|
g_mutex_lock (chain->lock); \
|
|
GST_LOG_OBJECT (chain->dbin, \
|
|
"locked chain %p from thread %p", \
|
|
chain, g_thread_self ()); \
|
|
} G_STMT_END
|
|
|
|
#define CHAIN_MUTEX_UNLOCK(chain) G_STMT_START { \
|
|
GST_LOG_OBJECT (chain->dbin, \
|
|
"unlocking chain %p from thread %p", \
|
|
chain, g_thread_self ()); \
|
|
g_mutex_unlock (chain->lock); \
|
|
} G_STMT_END
|
|
|
|
/* GstDecodePad
|
|
*
|
|
* GstPad private used for source pads of chains
|
|
*/
|
|
struct _GstDecodePad
|
|
{
|
|
GstGhostPad parent;
|
|
GstDecodeBin *dbin;
|
|
GstDecodeChain *chain;
|
|
|
|
gboolean blocked; /* the *target* pad is blocked */
|
|
gboolean exposed; /* the pad is exposed */
|
|
gboolean drained; /* an EOS has been seen on the pad */
|
|
|
|
gulong block_id;
|
|
};
|
|
|
|
GType gst_decode_pad_get_type (void);
|
|
G_DEFINE_TYPE (GstDecodePad, gst_decode_pad, GST_TYPE_GHOST_PAD);
|
|
#define GST_TYPE_DECODE_PAD (gst_decode_pad_get_type ())
|
|
#define GST_DECODE_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DECODE_PAD,GstDecodePad))
|
|
|
|
static GstDecodePad *gst_decode_pad_new (GstDecodeBin * dbin, GstPad * pad,
|
|
GstDecodeChain * chain);
|
|
static void gst_decode_pad_activate (GstDecodePad * dpad,
|
|
GstDecodeChain * chain);
|
|
static void gst_decode_pad_unblock (GstDecodePad * dpad);
|
|
static void gst_decode_pad_set_blocked (GstDecodePad * dpad, gboolean blocked);
|
|
|
|
static void gst_pending_pad_free (GstPendingPad * ppad);
|
|
static GstProbeReturn pad_event_cb (GstPad * pad, GstProbeType type,
|
|
gpointer type_data, gpointer data);
|
|
|
|
/********************************
|
|
* Standard GObject boilerplate *
|
|
********************************/
|
|
|
|
static void gst_decode_bin_class_init (GstDecodeBinClass * klass);
|
|
static void gst_decode_bin_init (GstDecodeBin * decode_bin);
|
|
static void gst_decode_bin_dispose (GObject * object);
|
|
static void gst_decode_bin_finalize (GObject * object);
|
|
|
|
static GType
|
|
gst_decode_bin_get_type (void)
|
|
{
|
|
static GType gst_decode_bin_type = 0;
|
|
|
|
if (!gst_decode_bin_type) {
|
|
static const GTypeInfo gst_decode_bin_info = {
|
|
sizeof (GstDecodeBinClass),
|
|
NULL,
|
|
NULL,
|
|
(GClassInitFunc) gst_decode_bin_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof (GstDecodeBin),
|
|
0,
|
|
(GInstanceInitFunc) gst_decode_bin_init,
|
|
NULL
|
|
};
|
|
|
|
gst_decode_bin_type =
|
|
g_type_register_static (GST_TYPE_BIN, "GstDecodeBin",
|
|
&gst_decode_bin_info, 0);
|
|
}
|
|
|
|
return gst_decode_bin_type;
|
|
}
|
|
|
|
static gboolean
|
|
_gst_boolean_accumulator (GSignalInvocationHint * ihint,
|
|
GValue * return_accu, const GValue * handler_return, gpointer dummy)
|
|
{
|
|
gboolean myboolean;
|
|
|
|
myboolean = g_value_get_boolean (handler_return);
|
|
if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
|
|
g_value_set_boolean (return_accu, myboolean);
|
|
|
|
/* stop emission if FALSE */
|
|
return myboolean;
|
|
}
|
|
|
|
/* we collect the first result */
|
|
static gboolean
|
|
_gst_array_accumulator (GSignalInvocationHint * ihint,
|
|
GValue * return_accu, const GValue * handler_return, gpointer dummy)
|
|
{
|
|
gpointer array;
|
|
|
|
array = g_value_get_boxed (handler_return);
|
|
if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
|
|
g_value_set_boxed (return_accu, array);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
_gst_select_accumulator (GSignalInvocationHint * ihint,
|
|
GValue * return_accu, const GValue * handler_return, gpointer dummy)
|
|
{
|
|
GstAutoplugSelectResult res;
|
|
|
|
res = g_value_get_enum (handler_return);
|
|
if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
|
|
g_value_set_enum (return_accu, res);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
_gst_array_hasvalue_accumulator (GSignalInvocationHint * ihint,
|
|
GValue * return_accu, const GValue * handler_return, gpointer dummy)
|
|
{
|
|
gpointer array;
|
|
|
|
array = g_value_get_boxed (handler_return);
|
|
if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
|
|
g_value_set_boxed (return_accu, array);
|
|
|
|
if (array != NULL)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_decode_bin_class_init (GstDecodeBinClass * klass)
|
|
{
|
|
GObjectClass *gobject_klass;
|
|
GstElementClass *gstelement_klass;
|
|
|
|
gobject_klass = (GObjectClass *) klass;
|
|
gstelement_klass = (GstElementClass *) klass;
|
|
|
|
parent_class = g_type_class_peek_parent (klass);
|
|
|
|
gobject_klass->dispose = gst_decode_bin_dispose;
|
|
gobject_klass->finalize = gst_decode_bin_finalize;
|
|
gobject_klass->set_property = gst_decode_bin_set_property;
|
|
gobject_klass->get_property = gst_decode_bin_get_property;
|
|
|
|
/**
|
|
* GstDecodeBin::unknown-type:
|
|
* @bin: The decodebin.
|
|
* @pad: The new pad containing caps that cannot be resolved to a 'final'
|
|
* stream type.
|
|
* @caps: The #GstCaps of the pad that cannot be resolved.
|
|
*
|
|
* This signal is emitted when a pad for which there is no further possible
|
|
* decoding is added to the decodebin.
|
|
*/
|
|
gst_decode_bin_signals[SIGNAL_UNKNOWN_TYPE] =
|
|
g_signal_new ("unknown-type", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDecodeBinClass, unknown_type),
|
|
NULL, NULL, gst_marshal_VOID__OBJECT_BOXED, G_TYPE_NONE, 2,
|
|
GST_TYPE_PAD, GST_TYPE_CAPS);
|
|
|
|
/**
|
|
* GstDecodeBin::autoplug-continue:
|
|
* @bin: The decodebin.
|
|
* @pad: The #GstPad.
|
|
* @caps: The #GstCaps found.
|
|
*
|
|
* This signal is emitted whenever decodebin finds a new stream. It is
|
|
* emitted before looking for any elements that can handle that stream.
|
|
*
|
|
* <note>
|
|
* Invocation of signal handlers stops after the first signal handler
|
|
* returns #FALSE. Signal handlers are invoked in the order they were
|
|
* connected in.
|
|
* </note>
|
|
*
|
|
* Returns: #TRUE if you wish decodebin to look for elements that can
|
|
* handle the given @caps. If #FALSE, those caps will be considered as
|
|
* final and the pad will be exposed as such (see 'pad-added' signal of
|
|
* #GstElement).
|
|
*/
|
|
gst_decode_bin_signals[SIGNAL_AUTOPLUG_CONTINUE] =
|
|
g_signal_new ("autoplug-continue", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDecodeBinClass, autoplug_continue),
|
|
_gst_boolean_accumulator, NULL, gst_play_marshal_BOOLEAN__OBJECT_BOXED,
|
|
G_TYPE_BOOLEAN, 2, GST_TYPE_PAD, GST_TYPE_CAPS);
|
|
|
|
/**
|
|
* GstDecodeBin::autoplug-factories:
|
|
* @bin: The decodebin.
|
|
* @pad: The #GstPad.
|
|
* @caps: The #GstCaps found.
|
|
*
|
|
* This function is emited when an array of possible factories for @caps on
|
|
* @pad is needed. Decodebin will by default return an array with all
|
|
* compatible factories, sorted by rank.
|
|
*
|
|
* If this function returns NULL, @pad will be exposed as a final caps.
|
|
*
|
|
* If this function returns an empty array, the pad will be considered as
|
|
* having an unhandled type media type.
|
|
*
|
|
* <note>
|
|
* Only the signal handler that is connected first will ever by invoked.
|
|
* Don't connect signal handlers with the #G_CONNECT_AFTER flag to this
|
|
* signal, they will never be invoked!
|
|
* </note>
|
|
*
|
|
* Returns: a #GValueArray* with a list of factories to try. The factories are
|
|
* by default tried in the returned order or based on the index returned by
|
|
* "autoplug-select".
|
|
*/
|
|
gst_decode_bin_signals[SIGNAL_AUTOPLUG_FACTORIES] =
|
|
g_signal_new ("autoplug-factories", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDecodeBinClass,
|
|
autoplug_factories), _gst_array_accumulator, NULL,
|
|
gst_play_marshal_BOXED__OBJECT_BOXED, G_TYPE_VALUE_ARRAY, 2,
|
|
GST_TYPE_PAD, GST_TYPE_CAPS);
|
|
|
|
/**
|
|
* GstDecodeBin::autoplug-sort:
|
|
* @bin: The decodebin.
|
|
* @pad: The #GstPad.
|
|
* @caps: The #GstCaps.
|
|
* @factories: A #GValueArray of possible #GstElementFactory to use.
|
|
*
|
|
* Once decodebin has found the possible #GstElementFactory objects to try
|
|
* for @caps on @pad, this signal is emited. The purpose of the signal is for
|
|
* the application to perform additional sorting or filtering on the element
|
|
* factory array.
|
|
*
|
|
* The callee should copy and modify @factories or return #NULL if the
|
|
* order should not change.
|
|
*
|
|
* <note>
|
|
* Invocation of signal handlers stops after one signal handler has
|
|
* returned something else than #NULL. Signal handlers are invoked in
|
|
* the order they were connected in.
|
|
* Don't connect signal handlers with the #G_CONNECT_AFTER flag to this
|
|
* signal, they will never be invoked!
|
|
* </note>
|
|
*
|
|
* Returns: A new sorted array of #GstElementFactory objects.
|
|
*/
|
|
gst_decode_bin_signals[SIGNAL_AUTOPLUG_SORT] =
|
|
g_signal_new ("autoplug-sort", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDecodeBinClass, autoplug_sort),
|
|
_gst_array_hasvalue_accumulator, NULL,
|
|
gst_play_marshal_BOXED__OBJECT_BOXED_BOXED, G_TYPE_VALUE_ARRAY, 3,
|
|
GST_TYPE_PAD, GST_TYPE_CAPS, G_TYPE_VALUE_ARRAY);
|
|
|
|
/**
|
|
* GstDecodeBin::autoplug-select:
|
|
* @bin: The decodebin.
|
|
* @pad: The #GstPad.
|
|
* @caps: The #GstCaps.
|
|
* @factory: A #GstElementFactory to use.
|
|
*
|
|
* This signal is emitted once decodebin has found all the possible
|
|
* #GstElementFactory that can be used to handle the given @caps. For each of
|
|
* those factories, this signal is emited.
|
|
*
|
|
* The signal handler should return a #GST_TYPE_AUTOPLUG_SELECT_RESULT enum
|
|
* value indicating what decodebin should do next.
|
|
*
|
|
* A value of #GST_AUTOPLUG_SELECT_TRY will try to autoplug an element from
|
|
* @factory.
|
|
*
|
|
* A value of #GST_AUTOPLUG_SELECT_EXPOSE will expose @pad without plugging
|
|
* any element to it.
|
|
*
|
|
* A value of #GST_AUTOPLUG_SELECT_SKIP will skip @factory and move to the
|
|
* next factory.
|
|
*
|
|
* <note>
|
|
* Only the signal handler that is connected first will ever by invoked.
|
|
* Don't connect signal handlers with the #G_CONNECT_AFTER flag to this
|
|
* signal, they will never be invoked!
|
|
* </note>
|
|
*
|
|
* Returns: a #GST_TYPE_AUTOPLUG_SELECT_RESULT that indicates the required
|
|
* operation. the default handler will always return
|
|
* #GST_AUTOPLUG_SELECT_TRY.
|
|
*/
|
|
gst_decode_bin_signals[SIGNAL_AUTOPLUG_SELECT] =
|
|
g_signal_new ("autoplug-select", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDecodeBinClass, autoplug_select),
|
|
_gst_select_accumulator, NULL,
|
|
gst_play_marshal_ENUM__OBJECT_BOXED_OBJECT,
|
|
GST_TYPE_AUTOPLUG_SELECT_RESULT, 3, GST_TYPE_PAD, GST_TYPE_CAPS,
|
|
GST_TYPE_ELEMENT_FACTORY);
|
|
|
|
/**
|
|
* GstDecodeBin::drained
|
|
* @bin: The decodebin
|
|
*
|
|
* This signal is emitted once decodebin has finished decoding all the data.
|
|
*
|
|
* Since: 0.10.16
|
|
*/
|
|
gst_decode_bin_signals[SIGNAL_DRAINED] =
|
|
g_signal_new ("drained", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDecodeBinClass, drained),
|
|
NULL, NULL, gst_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
|
|
|
|
g_object_class_install_property (gobject_klass, PROP_CAPS,
|
|
g_param_spec_boxed ("caps", "Caps", "The caps on which to stop decoding.",
|
|
GST_TYPE_CAPS, 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_SINK_CAPS,
|
|
g_param_spec_boxed ("sink-caps", "Sink Caps",
|
|
"The caps of the input data. (NULL = use typefind element)",
|
|
GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstDecodeBin::use-buffering
|
|
*
|
|
* Activate buffering in decodebin. This will instruct the multiqueues behind
|
|
* decoders to emit BUFFERING messages.
|
|
|
|
* Since: 0.10.26
|
|
*/
|
|
g_object_class_install_property (gobject_klass, PROP_USE_BUFFERING,
|
|
g_param_spec_boolean ("use-buffering", "Use Buffering",
|
|
"Emit GST_MESSAGE_BUFFERING based on low-/high-percent thresholds",
|
|
DEFAULT_USE_BUFFERING, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstDecodeBin:low-percent
|
|
*
|
|
* Low threshold percent for buffering to start.
|
|
*
|
|
* Since: 0.10.26
|
|
*/
|
|
g_object_class_install_property (gobject_klass, PROP_LOW_PERCENT,
|
|
g_param_spec_int ("low-percent", "Low percent",
|
|
"Low threshold for buffering to start", 0, 100,
|
|
DEFAULT_LOW_PERCENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
/**
|
|
* GstDecodeBin:high-percent
|
|
*
|
|
* High threshold percent for buffering to finish.
|
|
*
|
|
* Since: 0.10.26
|
|
*/
|
|
g_object_class_install_property (gobject_klass, PROP_HIGH_PERCENT,
|
|
g_param_spec_int ("high-percent", "High percent",
|
|
"High threshold for buffering to finish", 0, 100,
|
|
DEFAULT_HIGH_PERCENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstDecodeBin:max-size-bytes
|
|
*
|
|
* Max amount amount of bytes in the queue (0=automatic).
|
|
*
|
|
* Since: 0.10.26
|
|
*/
|
|
g_object_class_install_property (gobject_klass, PROP_MAX_SIZE_BYTES,
|
|
g_param_spec_uint ("max-size-bytes", "Max. size (bytes)",
|
|
"Max. amount of bytes in the queue (0=automatic)",
|
|
0, G_MAXUINT, DEFAULT_MAX_SIZE_BYTES,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
/**
|
|
* GstDecodeBin:max-size-buffers
|
|
*
|
|
* Max amount amount of buffers in the queue (0=automatic).
|
|
*
|
|
* Since: 0.10.26
|
|
*/
|
|
g_object_class_install_property (gobject_klass, PROP_MAX_SIZE_BUFFERS,
|
|
g_param_spec_uint ("max-size-buffers", "Max. size (buffers)",
|
|
"Max. number of buffers in the queue (0=automatic)",
|
|
0, G_MAXUINT, DEFAULT_MAX_SIZE_BUFFERS,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
/**
|
|
* GstDecodeBin:max-size-time
|
|
*
|
|
* Max amount amount of time in the queue (in ns, 0=automatic).
|
|
*
|
|
* Since: 0.10.26
|
|
*/
|
|
g_object_class_install_property (gobject_klass, PROP_MAX_SIZE_TIME,
|
|
g_param_spec_uint64 ("max-size-time", "Max. size (ns)",
|
|
"Max. amount of data in the queue (in ns, 0=automatic)",
|
|
0, G_MAXUINT64,
|
|
DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstDecodeBin::post-stream-topology
|
|
*
|
|
* Post stream-topology messages on the bus every time the topology changes.
|
|
*
|
|
* Since: 0.10.26
|
|
*/
|
|
g_object_class_install_property (gobject_klass, PROP_POST_STREAM_TOPOLOGY,
|
|
g_param_spec_boolean ("post-stream-topology", "Post Stream Topology",
|
|
"Post stream-topology messages",
|
|
DEFAULT_POST_STREAM_TOPOLOGY,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstDecodeBin::expose-all-streams
|
|
*
|
|
* Expose streams of unknown type.
|
|
*
|
|
* If set to %FALSE, then only the streams that can be decoded to the final
|
|
* caps (see 'caps' property) will have a pad exposed. Streams that do not
|
|
* match those caps but could have been decoded will not have decoder plugged
|
|
* in internally and will not have a pad exposed.
|
|
*
|
|
* Since: 0.10.30
|
|
*/
|
|
g_object_class_install_property (gobject_klass, PROP_EXPOSE_ALL_STREAMS,
|
|
g_param_spec_boolean ("expose-all-streams", "Expose All Streams",
|
|
"Expose all streams, including those of unknown type or that don't match the 'caps' property",
|
|
DEFAULT_EXPOSE_ALL_STREAMS,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
|
|
|
|
klass->autoplug_continue =
|
|
GST_DEBUG_FUNCPTR (gst_decode_bin_autoplug_continue);
|
|
klass->autoplug_factories =
|
|
GST_DEBUG_FUNCPTR (gst_decode_bin_autoplug_factories);
|
|
klass->autoplug_sort = GST_DEBUG_FUNCPTR (gst_decode_bin_autoplug_sort);
|
|
klass->autoplug_select = GST_DEBUG_FUNCPTR (gst_decode_bin_autoplug_select);
|
|
|
|
gst_element_class_add_pad_template (gstelement_klass,
|
|
gst_static_pad_template_get (&decoder_bin_sink_template));
|
|
gst_element_class_add_pad_template (gstelement_klass,
|
|
gst_static_pad_template_get (&decoder_bin_src_template));
|
|
|
|
gst_element_class_set_details_simple (gstelement_klass,
|
|
"Decoder Bin", "Generic/Bin/Decoder",
|
|
"Autoplug and decode to raw media",
|
|
"Edward Hervey <edward.hervey@collabora.co.uk>, "
|
|
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
|
|
|
|
gstelement_klass->change_state =
|
|
GST_DEBUG_FUNCPTR (gst_decode_bin_change_state);
|
|
}
|
|
|
|
/* Must be called with factories lock! */
|
|
static void
|
|
gst_decode_bin_update_factories_list (GstDecodeBin * dbin)
|
|
{
|
|
if (!dbin->factories
|
|
|| dbin->factories_cookie !=
|
|
gst_default_registry_get_feature_list_cookie ()) {
|
|
if (dbin->factories)
|
|
gst_plugin_feature_list_free (dbin->factories);
|
|
dbin->factories =
|
|
gst_element_factory_list_get_elements
|
|
(GST_ELEMENT_FACTORY_TYPE_DECODABLE, GST_RANK_MARGINAL);
|
|
dbin->factories_cookie = gst_default_registry_get_feature_list_cookie ();
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_decode_bin_init (GstDecodeBin * decode_bin)
|
|
{
|
|
/* first filter out the interesting element factories */
|
|
decode_bin->factories_lock = g_mutex_new ();
|
|
|
|
/* we create the typefind element only once */
|
|
decode_bin->typefind = gst_element_factory_make ("typefind", "typefind");
|
|
if (!decode_bin->typefind) {
|
|
g_warning ("can't find typefind element, decodebin will not work");
|
|
} else {
|
|
GstPad *pad;
|
|
GstPad *gpad;
|
|
GstPadTemplate *pad_tmpl;
|
|
|
|
/* add the typefind element */
|
|
if (!gst_bin_add (GST_BIN (decode_bin), decode_bin->typefind)) {
|
|
g_warning ("Could not add typefind element, decodebin will not work");
|
|
gst_object_unref (decode_bin->typefind);
|
|
decode_bin->typefind = NULL;
|
|
}
|
|
|
|
/* get the sinkpad */
|
|
pad = gst_element_get_static_pad (decode_bin->typefind, "sink");
|
|
|
|
/* get the pad template */
|
|
pad_tmpl = gst_static_pad_template_get (&decoder_bin_sink_template);
|
|
|
|
/* ghost the sink pad to ourself */
|
|
gpad = gst_ghost_pad_new_from_template ("sink", pad, pad_tmpl);
|
|
gst_pad_set_active (gpad, TRUE);
|
|
gst_element_add_pad (GST_ELEMENT (decode_bin), gpad);
|
|
|
|
gst_object_unref (pad_tmpl);
|
|
gst_object_unref (pad);
|
|
|
|
/* connect a signal to find out when the typefind element found
|
|
* a type */
|
|
decode_bin->have_type_id =
|
|
g_signal_connect (G_OBJECT (decode_bin->typefind), "have-type",
|
|
G_CALLBACK (type_found), decode_bin);
|
|
}
|
|
|
|
decode_bin->expose_lock = g_mutex_new ();
|
|
decode_bin->decode_chain = NULL;
|
|
|
|
decode_bin->dyn_lock = g_mutex_new ();
|
|
decode_bin->shutdown = FALSE;
|
|
decode_bin->blocked_pads = NULL;
|
|
|
|
decode_bin->subtitle_lock = g_mutex_new ();
|
|
|
|
decode_bin->encoding = g_strdup (DEFAULT_SUBTITLE_ENCODING);
|
|
decode_bin->caps = gst_static_caps_get (&default_raw_caps);
|
|
decode_bin->use_buffering = DEFAULT_USE_BUFFERING;
|
|
decode_bin->low_percent = DEFAULT_LOW_PERCENT;
|
|
decode_bin->high_percent = DEFAULT_HIGH_PERCENT;
|
|
|
|
decode_bin->max_size_bytes = DEFAULT_MAX_SIZE_BYTES;
|
|
decode_bin->max_size_buffers = DEFAULT_MAX_SIZE_BUFFERS;
|
|
decode_bin->max_size_time = DEFAULT_MAX_SIZE_TIME;
|
|
|
|
decode_bin->expose_allstreams = DEFAULT_EXPOSE_ALL_STREAMS;
|
|
}
|
|
|
|
static void
|
|
gst_decode_bin_dispose (GObject * object)
|
|
{
|
|
GstDecodeBin *decode_bin;
|
|
|
|
decode_bin = GST_DECODE_BIN (object);
|
|
|
|
if (decode_bin->factories)
|
|
gst_plugin_feature_list_free (decode_bin->factories);
|
|
decode_bin->factories = NULL;
|
|
|
|
if (decode_bin->decode_chain)
|
|
gst_decode_chain_free (decode_bin->decode_chain);
|
|
decode_bin->decode_chain = NULL;
|
|
|
|
if (decode_bin->caps)
|
|
gst_caps_unref (decode_bin->caps);
|
|
decode_bin->caps = NULL;
|
|
|
|
g_free (decode_bin->encoding);
|
|
decode_bin->encoding = NULL;
|
|
|
|
g_list_free (decode_bin->subtitles);
|
|
decode_bin->subtitles = NULL;
|
|
|
|
G_OBJECT_CLASS (parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gst_decode_bin_finalize (GObject * object)
|
|
{
|
|
GstDecodeBin *decode_bin;
|
|
|
|
decode_bin = GST_DECODE_BIN (object);
|
|
|
|
if (decode_bin->expose_lock) {
|
|
g_mutex_free (decode_bin->expose_lock);
|
|
decode_bin->expose_lock = NULL;
|
|
}
|
|
|
|
if (decode_bin->dyn_lock) {
|
|
g_mutex_free (decode_bin->dyn_lock);
|
|
decode_bin->dyn_lock = NULL;
|
|
}
|
|
|
|
if (decode_bin->subtitle_lock) {
|
|
g_mutex_free (decode_bin->subtitle_lock);
|
|
decode_bin->subtitle_lock = NULL;
|
|
}
|
|
|
|
if (decode_bin->factories_lock) {
|
|
g_mutex_free (decode_bin->factories_lock);
|
|
decode_bin->factories_lock = NULL;
|
|
}
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
/* _set_caps
|
|
* Changes the caps on which decodebin will stop decoding.
|
|
* Will unref the previously set one. The refcount of the given caps will be
|
|
* increased.
|
|
* @caps can be NULL.
|
|
*
|
|
* MT-safe
|
|
*/
|
|
static void
|
|
gst_decode_bin_set_caps (GstDecodeBin * dbin, GstCaps * caps)
|
|
{
|
|
GST_DEBUG_OBJECT (dbin, "Setting new caps: %" GST_PTR_FORMAT, caps);
|
|
|
|
GST_OBJECT_LOCK (dbin);
|
|
gst_caps_replace (&dbin->caps, caps);
|
|
GST_OBJECT_UNLOCK (dbin);
|
|
}
|
|
|
|
/* _get_caps
|
|
* Returns the currently configured caps on which decodebin will stop decoding.
|
|
* The returned caps (if not NULL), will have its refcount incremented.
|
|
*
|
|
* MT-safe
|
|
*/
|
|
static GstCaps *
|
|
gst_decode_bin_get_caps (GstDecodeBin * dbin)
|
|
{
|
|
GstCaps *caps;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Getting currently set caps");
|
|
|
|
GST_OBJECT_LOCK (dbin);
|
|
caps = dbin->caps;
|
|
if (caps)
|
|
gst_caps_ref (caps);
|
|
GST_OBJECT_UNLOCK (dbin);
|
|
|
|
return caps;
|
|
}
|
|
|
|
static void
|
|
gst_decode_bin_set_sink_caps (GstDecodeBin * dbin, GstCaps * caps)
|
|
{
|
|
GST_DEBUG_OBJECT (dbin, "Setting new caps: %" GST_PTR_FORMAT, caps);
|
|
|
|
g_object_set (dbin->typefind, "force-caps", caps, NULL);
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_decode_bin_get_sink_caps (GstDecodeBin * dbin)
|
|
{
|
|
GstCaps *caps;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Getting currently set caps");
|
|
|
|
g_object_get (dbin->typefind, "force-caps", &caps, NULL);
|
|
|
|
return caps;
|
|
}
|
|
|
|
static void
|
|
gst_decode_bin_set_subs_encoding (GstDecodeBin * dbin, const gchar * encoding)
|
|
{
|
|
GList *walk;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Setting new encoding: %s", GST_STR_NULL (encoding));
|
|
|
|
SUBTITLE_LOCK (dbin);
|
|
g_free (dbin->encoding);
|
|
dbin->encoding = g_strdup (encoding);
|
|
|
|
/* set the subtitle encoding on all added elements */
|
|
for (walk = dbin->subtitles; walk; walk = g_list_next (walk)) {
|
|
g_object_set (G_OBJECT (walk->data), "subtitle-encoding", dbin->encoding,
|
|
NULL);
|
|
}
|
|
SUBTITLE_UNLOCK (dbin);
|
|
}
|
|
|
|
static gchar *
|
|
gst_decode_bin_get_subs_encoding (GstDecodeBin * dbin)
|
|
{
|
|
gchar *encoding;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Getting currently set encoding");
|
|
|
|
SUBTITLE_LOCK (dbin);
|
|
encoding = g_strdup (dbin->encoding);
|
|
SUBTITLE_UNLOCK (dbin);
|
|
|
|
return encoding;
|
|
}
|
|
|
|
static void
|
|
gst_decode_bin_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstDecodeBin *dbin;
|
|
|
|
dbin = GST_DECODE_BIN (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_CAPS:
|
|
gst_decode_bin_set_caps (dbin, g_value_get_boxed (value));
|
|
break;
|
|
case PROP_SUBTITLE_ENCODING:
|
|
gst_decode_bin_set_subs_encoding (dbin, g_value_get_string (value));
|
|
break;
|
|
case PROP_SINK_CAPS:
|
|
gst_decode_bin_set_sink_caps (dbin, g_value_get_boxed (value));
|
|
break;
|
|
case PROP_USE_BUFFERING:
|
|
dbin->use_buffering = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_LOW_PERCENT:
|
|
dbin->low_percent = g_value_get_int (value);
|
|
break;
|
|
case PROP_HIGH_PERCENT:
|
|
dbin->high_percent = g_value_get_int (value);
|
|
break;
|
|
case PROP_MAX_SIZE_BYTES:
|
|
dbin->max_size_bytes = g_value_get_uint (value);
|
|
break;
|
|
case PROP_MAX_SIZE_BUFFERS:
|
|
dbin->max_size_buffers = g_value_get_uint (value);
|
|
break;
|
|
case PROP_MAX_SIZE_TIME:
|
|
dbin->max_size_time = g_value_get_uint64 (value);
|
|
break;
|
|
case PROP_POST_STREAM_TOPOLOGY:
|
|
dbin->post_stream_topology = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_EXPOSE_ALL_STREAMS:
|
|
dbin->expose_allstreams = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_decode_bin_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstDecodeBin *dbin;
|
|
|
|
dbin = GST_DECODE_BIN (object);
|
|
switch (prop_id) {
|
|
case PROP_CAPS:
|
|
g_value_take_boxed (value, gst_decode_bin_get_caps (dbin));
|
|
break;
|
|
case PROP_SUBTITLE_ENCODING:
|
|
g_value_take_string (value, gst_decode_bin_get_subs_encoding (dbin));
|
|
break;
|
|
case PROP_SINK_CAPS:
|
|
g_value_take_boxed (value, gst_decode_bin_get_sink_caps (dbin));
|
|
break;
|
|
case PROP_USE_BUFFERING:
|
|
g_value_set_boolean (value, dbin->use_buffering);
|
|
break;
|
|
case PROP_LOW_PERCENT:
|
|
g_value_set_int (value, dbin->low_percent);
|
|
break;
|
|
case PROP_HIGH_PERCENT:
|
|
g_value_set_int (value, dbin->high_percent);
|
|
break;
|
|
case PROP_MAX_SIZE_BYTES:
|
|
g_value_set_uint (value, dbin->max_size_bytes);
|
|
break;
|
|
case PROP_MAX_SIZE_BUFFERS:
|
|
g_value_set_uint (value, dbin->max_size_buffers);
|
|
break;
|
|
case PROP_MAX_SIZE_TIME:
|
|
g_value_set_uint64 (value, dbin->max_size_time);
|
|
break;
|
|
case PROP_POST_STREAM_TOPOLOGY:
|
|
g_value_set_boolean (value, dbin->post_stream_topology);
|
|
break;
|
|
case PROP_EXPOSE_ALL_STREAMS:
|
|
g_value_set_boolean (value, dbin->expose_allstreams);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*****
|
|
* Default autoplug signal handlers
|
|
*****/
|
|
static gboolean
|
|
gst_decode_bin_autoplug_continue (GstElement * element, GstPad * pad,
|
|
GstCaps * caps)
|
|
{
|
|
GST_DEBUG_OBJECT (element, "autoplug-continue returns TRUE");
|
|
|
|
/* by default we always continue */
|
|
return TRUE;
|
|
}
|
|
|
|
static GValueArray *
|
|
gst_decode_bin_autoplug_factories (GstElement * element, GstPad * pad,
|
|
GstCaps * caps)
|
|
{
|
|
GList *list, *tmp;
|
|
GValueArray *result;
|
|
GstDecodeBin *dbin = GST_DECODE_BIN_CAST (element);
|
|
|
|
GST_DEBUG_OBJECT (element, "finding factories");
|
|
|
|
/* return all compatible factories for caps */
|
|
g_mutex_lock (dbin->factories_lock);
|
|
gst_decode_bin_update_factories_list (dbin);
|
|
list =
|
|
gst_element_factory_list_filter (dbin->factories, caps, GST_PAD_SINK,
|
|
FALSE);
|
|
g_mutex_unlock (dbin->factories_lock);
|
|
|
|
result = g_value_array_new (g_list_length (list));
|
|
for (tmp = list; tmp; tmp = tmp->next) {
|
|
GstElementFactory *factory = GST_ELEMENT_FACTORY_CAST (tmp->data);
|
|
GValue val = { 0, };
|
|
|
|
g_value_init (&val, G_TYPE_OBJECT);
|
|
g_value_set_object (&val, factory);
|
|
g_value_array_append (result, &val);
|
|
g_value_unset (&val);
|
|
}
|
|
gst_plugin_feature_list_free (list);
|
|
|
|
GST_DEBUG_OBJECT (element, "autoplug-factories returns %p", result);
|
|
|
|
return result;
|
|
}
|
|
|
|
static GValueArray *
|
|
gst_decode_bin_autoplug_sort (GstElement * element, GstPad * pad,
|
|
GstCaps * caps, GValueArray * factories)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static GstAutoplugSelectResult
|
|
gst_decode_bin_autoplug_select (GstElement * element, GstPad * pad,
|
|
GstCaps * caps, GstElementFactory * factory)
|
|
{
|
|
GST_DEBUG_OBJECT (element, "default autoplug-select returns TRY");
|
|
|
|
/* Try factory. */
|
|
return GST_AUTOPLUG_SELECT_TRY;
|
|
}
|
|
|
|
/********
|
|
* Discovery methods
|
|
*****/
|
|
|
|
static gboolean are_final_caps (GstDecodeBin * dbin, GstCaps * caps);
|
|
static gboolean is_demuxer_element (GstElement * srcelement);
|
|
|
|
static gboolean connect_pad (GstDecodeBin * dbin, GstElement * src,
|
|
GstDecodePad * dpad, GstPad * pad, GstCaps * caps, GValueArray * factories,
|
|
GstDecodeChain * chain);
|
|
static gboolean connect_element (GstDecodeBin * dbin, GstElement * element,
|
|
GstDecodeChain * chain);
|
|
static void expose_pad (GstDecodeBin * dbin, GstElement * src,
|
|
GstDecodePad * dpad, GstPad * pad, GstCaps * caps, GstDecodeChain * chain);
|
|
|
|
static void pad_added_cb (GstElement * element, GstPad * pad,
|
|
GstDecodeChain * chain);
|
|
static void pad_removed_cb (GstElement * element, GstPad * pad,
|
|
GstDecodeChain * chain);
|
|
static void no_more_pads_cb (GstElement * element, GstDecodeChain * chain);
|
|
|
|
static GstDecodeGroup *gst_decode_chain_get_current_group (GstDecodeChain *
|
|
chain);
|
|
|
|
/* called when a new pad is discovered. It will perform some basic actions
|
|
* before trying to link something to it.
|
|
*
|
|
* - Check the caps, don't do anything when there are no caps or when they have
|
|
* no good type.
|
|
* - signal AUTOPLUG_CONTINUE to check if we need to continue autoplugging this
|
|
* pad.
|
|
* - if the caps are non-fixed, setup a handler to continue autoplugging when
|
|
* the caps become fixed (connect to notify::caps).
|
|
* - get list of factories to autoplug.
|
|
* - continue autoplugging to one of the factories.
|
|
*/
|
|
static void
|
|
analyze_new_pad (GstDecodeBin * dbin, GstElement * src, GstPad * pad,
|
|
GstCaps * caps, GstDecodeChain * chain)
|
|
{
|
|
gboolean apcontinue = TRUE;
|
|
GValueArray *factories = NULL, *result = NULL;
|
|
GstDecodePad *dpad;
|
|
GstElementFactory *factory;
|
|
const gchar *classification;
|
|
gboolean is_parser_converter = FALSE;
|
|
gboolean res;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Pad %s:%s caps:%" GST_PTR_FORMAT,
|
|
GST_DEBUG_PAD_NAME (pad), caps);
|
|
|
|
if (chain->elements
|
|
&& src != ((GstDecodeElement *) chain->elements->data)->element
|
|
&& src != ((GstDecodeElement *) chain->elements->data)->capsfilter) {
|
|
GST_ERROR_OBJECT (dbin, "New pad from not the last element in this chain");
|
|
return;
|
|
}
|
|
|
|
if (chain->endpad) {
|
|
GST_ERROR_OBJECT (dbin, "New pad in a chain that is already complete");
|
|
return;
|
|
}
|
|
|
|
if (chain->demuxer) {
|
|
GstDecodeGroup *group;
|
|
GstDecodeChain *oldchain = chain;
|
|
|
|
/* we are adding a new pad for a demuxer (see is_demuxer_element(),
|
|
* start a new chain for it */
|
|
CHAIN_MUTEX_LOCK (oldchain);
|
|
group = gst_decode_chain_get_current_group (chain);
|
|
if (group) {
|
|
chain = gst_decode_chain_new (dbin, group, pad);
|
|
group->children = g_list_prepend (group->children, chain);
|
|
}
|
|
CHAIN_MUTEX_UNLOCK (oldchain);
|
|
if (!group) {
|
|
GST_WARNING_OBJECT (dbin, "No current group");
|
|
return;
|
|
}
|
|
}
|
|
|
|
if ((caps == NULL) || gst_caps_is_empty (caps))
|
|
goto unknown_type;
|
|
|
|
if (gst_caps_is_any (caps))
|
|
goto any_caps;
|
|
|
|
dpad = gst_decode_pad_new (dbin, pad, chain);
|
|
|
|
/* 1. Emit 'autoplug-continue' the result will tell us if this pads needs
|
|
* further autoplugging. Only do this for fixed caps, for unfixed caps
|
|
* we will later come here again from the notify::caps handler. The
|
|
* problem with unfixed caps is that we can reliably tell if the output
|
|
* is e.g. accepted by a sink because only parts of the possible final
|
|
* caps might be accepted by the sink. */
|
|
if (gst_caps_is_fixed (caps))
|
|
g_signal_emit (G_OBJECT (dbin),
|
|
gst_decode_bin_signals[SIGNAL_AUTOPLUG_CONTINUE], 0, dpad, caps,
|
|
&apcontinue);
|
|
else
|
|
apcontinue = TRUE;
|
|
|
|
/* 1.a if autoplug-continue is FALSE or caps is a raw format, goto pad_is_final */
|
|
if ((!apcontinue) || are_final_caps (dbin, caps))
|
|
goto expose_pad;
|
|
|
|
/* 1.b For Parser/Converter that can output different stream formats
|
|
* we insert a capsfilter with the sorted caps of all possible next
|
|
* elements and continue with the capsfilter srcpad */
|
|
factory = gst_element_get_factory (src);
|
|
classification = gst_element_factory_get_klass (factory);
|
|
is_parser_converter = (strstr (classification, "Parser")
|
|
&& strstr (classification, "Converter"));
|
|
|
|
/* 1.c when the caps are not fixed yet, we can't be sure what element to
|
|
* connect. We delay autoplugging until the caps are fixed */
|
|
if (!is_parser_converter && !gst_caps_is_fixed (caps))
|
|
goto non_fixed;
|
|
|
|
/* 1.d else get the factories and if there's no compatible factory goto
|
|
* unknown_type */
|
|
g_signal_emit (G_OBJECT (dbin),
|
|
gst_decode_bin_signals[SIGNAL_AUTOPLUG_FACTORIES], 0, dpad, caps,
|
|
&factories);
|
|
|
|
/* NULL means that we can expose the pad */
|
|
if (factories == NULL)
|
|
goto expose_pad;
|
|
|
|
/* if the array is empty, we have a type for which we have no decoder */
|
|
if (factories->n_values == 0) {
|
|
if (!dbin->expose_allstreams) {
|
|
GstCaps *raw = gst_static_caps_get (&default_raw_caps);
|
|
|
|
/* If the caps are raw, this just means we don't want to expose them */
|
|
if (gst_caps_can_intersect (raw, caps)) {
|
|
g_value_array_free (factories);
|
|
gst_caps_unref (raw);
|
|
gst_object_unref (dpad);
|
|
goto discarded_type;
|
|
}
|
|
gst_caps_unref (raw);
|
|
}
|
|
|
|
/* if not we have a unhandled type with no compatible factories */
|
|
g_value_array_free (factories);
|
|
gst_object_unref (dpad);
|
|
goto unknown_type;
|
|
}
|
|
|
|
/* 1.e sort some more. */
|
|
g_signal_emit (G_OBJECT (dbin),
|
|
gst_decode_bin_signals[SIGNAL_AUTOPLUG_SORT], 0, dpad, caps, factories,
|
|
&result);
|
|
if (result) {
|
|
g_value_array_free (factories);
|
|
factories = result;
|
|
}
|
|
|
|
/* At this point we have a potential decoder, but we might not need it
|
|
* if it doesn't match the output caps */
|
|
if (!dbin->expose_allstreams && gst_caps_is_fixed (caps)) {
|
|
guint i;
|
|
const GList *tmps;
|
|
gboolean dontuse = FALSE;
|
|
|
|
GST_DEBUG ("Checking if we can abort early");
|
|
|
|
/* 1.f Do an early check to see if the candidates are potential decoders, but
|
|
* due to the fact that they decode to a mediatype that is not final we don't
|
|
* need them */
|
|
|
|
for (i = 0; i < factories->n_values && !dontuse; i++) {
|
|
GstElementFactory *factory =
|
|
g_value_get_object (g_value_array_get_nth (factories, i));
|
|
GstCaps *tcaps;
|
|
|
|
/* We are only interested in skipping decoders */
|
|
if (strstr (gst_element_factory_get_klass (factory), "Decoder")) {
|
|
|
|
GST_DEBUG ("Trying factory %s",
|
|
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
|
|
|
|
/* Check the source pad template caps to see if they match raw caps but don't match
|
|
* our final caps*/
|
|
for (tmps = gst_element_factory_get_static_pad_templates (factory);
|
|
tmps && !dontuse; tmps = tmps->next) {
|
|
GstStaticPadTemplate *st = (GstStaticPadTemplate *) tmps->data;
|
|
if (st->direction != GST_PAD_SRC)
|
|
continue;
|
|
tcaps = gst_static_pad_template_get_caps (st);
|
|
|
|
apcontinue = TRUE;
|
|
|
|
/* Emit autoplug-continue to see if the caps are considered to be raw caps */
|
|
g_signal_emit (G_OBJECT (dbin),
|
|
gst_decode_bin_signals[SIGNAL_AUTOPLUG_CONTINUE], 0, dpad, tcaps,
|
|
&apcontinue);
|
|
|
|
/* If autoplug-continue returns TRUE and the caps are not final, don't use them */
|
|
if (apcontinue && !are_final_caps (dbin, tcaps))
|
|
dontuse = TRUE;
|
|
gst_caps_unref (tcaps);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (dontuse) {
|
|
gst_object_unref (dpad);
|
|
g_value_array_free (factories);
|
|
goto discarded_type;
|
|
}
|
|
}
|
|
|
|
/* 1.g now get the factory template caps and insert the capsfilter if this
|
|
* is a parser/converter
|
|
*/
|
|
if (is_parser_converter) {
|
|
GstCaps *filter_caps;
|
|
gint i;
|
|
GstPad *p;
|
|
GstDecodeElement *delem;
|
|
|
|
g_assert (chain->elements != NULL);
|
|
delem = (GstDecodeElement *) chain->elements->data;
|
|
|
|
filter_caps = gst_caps_new_empty ();
|
|
for (i = 0; i < factories->n_values; i++) {
|
|
GstElementFactory *factory =
|
|
g_value_get_object (g_value_array_get_nth (factories, i));
|
|
GstCaps *tcaps, *intersection;
|
|
const GList *tmps;
|
|
|
|
GST_DEBUG ("Trying factory %s",
|
|
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
|
|
|
|
if (gst_element_get_factory (src) == factory) {
|
|
GST_DEBUG ("Skipping factory");
|
|
continue;
|
|
}
|
|
|
|
for (tmps = gst_element_factory_get_static_pad_templates (factory); tmps;
|
|
tmps = tmps->next) {
|
|
GstStaticPadTemplate *st = (GstStaticPadTemplate *) tmps->data;
|
|
if (st->direction != GST_PAD_SINK || st->presence != GST_PAD_ALWAYS)
|
|
continue;
|
|
tcaps = gst_static_pad_template_get_caps (st);
|
|
intersection =
|
|
gst_caps_intersect_full (tcaps, caps, GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_merge (filter_caps, intersection);
|
|
gst_caps_unref (tcaps);
|
|
}
|
|
}
|
|
|
|
/* Append the parser caps to prevent any not-negotiated errors */
|
|
gst_caps_merge (filter_caps, gst_caps_copy (caps));
|
|
|
|
delem->capsfilter = gst_element_factory_make ("capsfilter", NULL);
|
|
g_object_set (G_OBJECT (delem->capsfilter), "caps", filter_caps, NULL);
|
|
gst_caps_unref (filter_caps);
|
|
gst_element_set_state (delem->capsfilter, GST_STATE_PAUSED);
|
|
gst_bin_add (GST_BIN_CAST (dbin), gst_object_ref (delem->capsfilter));
|
|
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (dpad), NULL);
|
|
p = gst_element_get_static_pad (delem->capsfilter, "sink");
|
|
gst_pad_link_full (pad, p, GST_PAD_LINK_CHECK_NOTHING);
|
|
gst_object_unref (p);
|
|
p = gst_element_get_static_pad (delem->capsfilter, "src");
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (dpad), p);
|
|
pad = p;
|
|
|
|
if (!gst_caps_is_fixed (caps)) {
|
|
g_value_array_free (factories);
|
|
goto non_fixed;
|
|
}
|
|
}
|
|
|
|
/* 1.h else continue autoplugging something from the list. */
|
|
GST_LOG_OBJECT (pad, "Let's continue discovery on this pad");
|
|
res = connect_pad (dbin, src, dpad, pad, caps, factories, chain);
|
|
|
|
/* Need to unref the capsfilter srcpad here if
|
|
* we inserted a capsfilter */
|
|
if (is_parser_converter)
|
|
gst_object_unref (pad);
|
|
|
|
gst_object_unref (dpad);
|
|
g_value_array_free (factories);
|
|
|
|
if (!res)
|
|
goto unknown_type;
|
|
|
|
return;
|
|
|
|
expose_pad:
|
|
{
|
|
GST_LOG_OBJECT (dbin, "Pad is final. autoplug-continue:%d", apcontinue);
|
|
expose_pad (dbin, src, dpad, pad, caps, chain);
|
|
gst_object_unref (dpad);
|
|
return;
|
|
}
|
|
|
|
discarded_type:
|
|
{
|
|
GST_LOG_OBJECT (pad, "Known type, but discarded because not final caps");
|
|
chain->deadend = TRUE;
|
|
chain->endcaps = gst_caps_ref (caps);
|
|
|
|
/* Try to expose anything */
|
|
EXPOSE_LOCK (dbin);
|
|
if (gst_decode_chain_is_complete (dbin->decode_chain)) {
|
|
gst_decode_bin_expose (dbin);
|
|
}
|
|
EXPOSE_UNLOCK (dbin);
|
|
do_async_done (dbin);
|
|
|
|
return;
|
|
}
|
|
|
|
unknown_type:
|
|
{
|
|
GST_LOG_OBJECT (pad, "Unknown type, posting message and firing signal");
|
|
|
|
chain->deadend = TRUE;
|
|
chain->endcaps = gst_caps_ref (caps);
|
|
|
|
gst_element_post_message (GST_ELEMENT_CAST (dbin),
|
|
gst_missing_decoder_message_new (GST_ELEMENT_CAST (dbin), caps));
|
|
|
|
g_signal_emit (G_OBJECT (dbin),
|
|
gst_decode_bin_signals[SIGNAL_UNKNOWN_TYPE], 0, pad, caps);
|
|
|
|
/* Try to expose anything */
|
|
EXPOSE_LOCK (dbin);
|
|
if (gst_decode_chain_is_complete (dbin->decode_chain)) {
|
|
gst_decode_bin_expose (dbin);
|
|
}
|
|
EXPOSE_UNLOCK (dbin);
|
|
|
|
if (src == dbin->typefind) {
|
|
gchar *desc;
|
|
|
|
if (caps && !gst_caps_is_empty (caps)) {
|
|
desc = gst_pb_utils_get_decoder_description (caps);
|
|
GST_ELEMENT_ERROR (dbin, STREAM, CODEC_NOT_FOUND,
|
|
(_("A %s plugin is required to play this stream, "
|
|
"but not installed."), desc),
|
|
("No decoder to handle media type '%s'",
|
|
gst_structure_get_name (gst_caps_get_structure (caps, 0))));
|
|
g_free (desc);
|
|
} else {
|
|
GST_ELEMENT_ERROR (dbin, STREAM, TYPE_NOT_FOUND,
|
|
(_("Could not determine type of stream")),
|
|
("Stream caps %" GST_PTR_FORMAT, caps));
|
|
}
|
|
do_async_done (dbin);
|
|
}
|
|
return;
|
|
}
|
|
non_fixed:
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "pad has non-fixed caps delay autoplugging");
|
|
gst_object_unref (dpad);
|
|
goto setup_caps_delay;
|
|
}
|
|
any_caps:
|
|
{
|
|
GST_WARNING_OBJECT (pad,
|
|
"pad has ANY caps, not able to autoplug to anything");
|
|
goto setup_caps_delay;
|
|
}
|
|
setup_caps_delay:
|
|
{
|
|
GstPendingPad *ppad;
|
|
|
|
/* connect to caps notification */
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
GST_LOG_OBJECT (dbin, "Chain %p has now %d dynamic pads", chain,
|
|
g_list_length (chain->pending_pads));
|
|
ppad = g_slice_new0 (GstPendingPad);
|
|
ppad->pad = gst_object_ref (pad);
|
|
ppad->chain = chain;
|
|
ppad->event_probe_id =
|
|
gst_pad_add_probe (pad, GST_PROBE_TYPE_EVENT, pad_event_cb, ppad, NULL);
|
|
chain->pending_pads = g_list_prepend (chain->pending_pads, ppad);
|
|
g_signal_connect (G_OBJECT (pad), "notify::caps",
|
|
G_CALLBACK (caps_notify_cb), chain);
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
|
|
/* If we're here because we have a Parser/Converter
|
|
* we have to unref the pad */
|
|
if (is_parser_converter)
|
|
gst_object_unref (pad);
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
/* connect_pad:
|
|
*
|
|
* Try to connect the given pad to an element created from one of the factories,
|
|
* and recursively.
|
|
*
|
|
* Note that dpad is ghosting pad, and so pad is linked; be sure to unset dpad's
|
|
* target before trying to link pad.
|
|
*
|
|
* Returns TRUE if an element was properly created and linked
|
|
*/
|
|
static gboolean
|
|
connect_pad (GstDecodeBin * dbin, GstElement * src, GstDecodePad * dpad,
|
|
GstPad * pad, GstCaps * caps, GValueArray * factories,
|
|
GstDecodeChain * chain)
|
|
{
|
|
gboolean res = FALSE;
|
|
GstPad *mqpad = NULL;
|
|
gboolean is_demuxer = chain->parent && !chain->elements; /* First pad after the demuxer */
|
|
|
|
g_return_val_if_fail (factories != NULL, FALSE);
|
|
g_return_val_if_fail (factories->n_values > 0, FALSE);
|
|
|
|
GST_DEBUG_OBJECT (dbin, "pad %s:%s , chain:%p",
|
|
GST_DEBUG_PAD_NAME (pad), chain);
|
|
|
|
/* 1. is element demuxer or parser */
|
|
if (is_demuxer) {
|
|
GST_LOG_OBJECT (src,
|
|
"is a demuxer, connecting the pad through multiqueue '%s'",
|
|
GST_OBJECT_NAME (chain->parent->multiqueue));
|
|
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (dpad), NULL);
|
|
if (!(mqpad = gst_decode_group_control_demuxer_pad (chain->parent, pad)))
|
|
goto beach;
|
|
src = chain->parent->multiqueue;
|
|
pad = mqpad;
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (dpad), pad);
|
|
}
|
|
|
|
/* 2. Try to create an element and link to it */
|
|
while (factories->n_values > 0) {
|
|
GstAutoplugSelectResult ret;
|
|
GstElementFactory *factory;
|
|
GstDecodeElement *delem;
|
|
GstElement *element;
|
|
GstPad *sinkpad;
|
|
gboolean subtitle;
|
|
|
|
/* Set dpad target to pad again, it might've been unset
|
|
* below but we came back here because something failed
|
|
*/
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (dpad), pad);
|
|
|
|
/* take first factory */
|
|
factory = g_value_get_object (g_value_array_get_nth (factories, 0));
|
|
/* Remove selected factory from the list. */
|
|
g_value_array_remove (factories, 0);
|
|
|
|
/* Check if the caps are really supported by the factory. The
|
|
* factory list is non-empty-subset filtered while caps
|
|
* are only accepted by a pad if they are a subset of the
|
|
* pad caps.
|
|
*
|
|
* FIXME: Only do this for fixed caps here. Non-fixed caps
|
|
* can happen if a Parser/Converter was autoplugged before
|
|
* this. We then assume that it will be able to convert to
|
|
* everything that the decoder would want.
|
|
*
|
|
* A subset check will fail here because the parser caps
|
|
* will be generic and while the decoder will only
|
|
* support a subset of the parser caps.
|
|
*/
|
|
if (gst_caps_is_fixed (caps)) {
|
|
const GList *templs;
|
|
gboolean skip = FALSE;
|
|
|
|
templs = gst_element_factory_get_static_pad_templates (factory);
|
|
|
|
while (templs) {
|
|
GstStaticPadTemplate *templ = (GstStaticPadTemplate *) templs->data;
|
|
|
|
if (templ->direction == GST_PAD_SINK) {
|
|
GstCaps *templcaps = gst_static_caps_get (&templ->static_caps);
|
|
|
|
if (!gst_caps_is_subset (caps, templcaps)) {
|
|
gst_caps_unref (templcaps);
|
|
skip = TRUE;
|
|
break;
|
|
}
|
|
|
|
gst_caps_unref (templcaps);
|
|
}
|
|
templs = g_list_next (templs);
|
|
}
|
|
if (skip)
|
|
continue;
|
|
}
|
|
|
|
/* If the factory is for a parser we first check if the factory
|
|
* was already used for the current chain. If it was used already
|
|
* we would otherwise create an infinite loop here because the
|
|
* parser apparently accepts its own output as input.
|
|
* This is only done for parsers because it's perfectly valid
|
|
* to have other element classes after each other because a
|
|
* parser is the only one that does not change the data. A
|
|
* valid example for this would be multiple id3demux in a row.
|
|
*/
|
|
if (strstr (gst_element_factory_get_klass (factory), "Parser")) {
|
|
gboolean skip = FALSE;
|
|
GList *l;
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
for (l = chain->elements; l; l = l->next) {
|
|
GstDecodeElement *delem = (GstDecodeElement *) l->data;
|
|
GstElement *otherelement = delem->element;
|
|
|
|
if (gst_element_get_factory (otherelement) == factory) {
|
|
skip = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
if (skip) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Skipping factory '%s' because it was already used in this chain",
|
|
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST (factory)));
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* emit autoplug-select to see what we should do with it. */
|
|
g_signal_emit (G_OBJECT (dbin),
|
|
gst_decode_bin_signals[SIGNAL_AUTOPLUG_SELECT],
|
|
0, dpad, caps, factory, &ret);
|
|
|
|
switch (ret) {
|
|
case GST_AUTOPLUG_SELECT_TRY:
|
|
GST_DEBUG_OBJECT (dbin, "autoplug select requested try");
|
|
break;
|
|
case GST_AUTOPLUG_SELECT_EXPOSE:
|
|
GST_DEBUG_OBJECT (dbin, "autoplug select requested expose");
|
|
/* expose the pad, we don't have the source element */
|
|
expose_pad (dbin, src, dpad, pad, caps, chain);
|
|
res = TRUE;
|
|
goto beach;
|
|
case GST_AUTOPLUG_SELECT_SKIP:
|
|
GST_DEBUG_OBJECT (dbin, "autoplug select requested skip");
|
|
continue;
|
|
default:
|
|
GST_WARNING_OBJECT (dbin, "autoplug select returned unhandled %d", ret);
|
|
break;
|
|
}
|
|
|
|
/* 2.0. Unlink pad */
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (dpad), NULL);
|
|
|
|
/* 2.1. Try to create an element */
|
|
if ((element = gst_element_factory_create (factory, NULL)) == NULL) {
|
|
GST_WARNING_OBJECT (dbin, "Could not create an element from %s",
|
|
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
|
|
continue;
|
|
}
|
|
|
|
/* ... 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 (dbin, "Couldn't set %s to READY",
|
|
GST_ELEMENT_NAME (element));
|
|
gst_object_unref (element);
|
|
continue;
|
|
}
|
|
|
|
/* 2.3. Find its sink pad, this should work after activating it. */
|
|
if (!(sinkpad = find_sink_pad (element))) {
|
|
GST_WARNING_OBJECT (dbin, "Element %s doesn't have a sink pad",
|
|
GST_ELEMENT_NAME (element));
|
|
gst_element_set_state (element, GST_STATE_NULL);
|
|
gst_object_unref (element);
|
|
continue;
|
|
}
|
|
|
|
/* 2.4 add it ... */
|
|
if (!(gst_bin_add (GST_BIN_CAST (dbin), element))) {
|
|
GST_WARNING_OBJECT (dbin, "Couldn't add %s to the bin",
|
|
GST_ELEMENT_NAME (element));
|
|
gst_object_unref (sinkpad);
|
|
gst_element_set_state (element, GST_STATE_NULL);
|
|
gst_object_unref (element);
|
|
continue;
|
|
}
|
|
|
|
/* 2.5 ...and try to link */
|
|
if ((gst_pad_link (pad, sinkpad)) != GST_PAD_LINK_OK) {
|
|
GST_WARNING_OBJECT (dbin, "Link failed on pad %s:%s",
|
|
GST_DEBUG_PAD_NAME (sinkpad));
|
|
gst_element_set_state (element, GST_STATE_NULL);
|
|
gst_object_unref (sinkpad);
|
|
gst_bin_remove (GST_BIN (dbin), element);
|
|
continue;
|
|
}
|
|
gst_object_unref (sinkpad);
|
|
GST_LOG_OBJECT (dbin, "linked on pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
delem = g_slice_new (GstDecodeElement);
|
|
delem->element = gst_object_ref (element);
|
|
delem->capsfilter = NULL;
|
|
chain->elements = g_list_prepend (chain->elements, delem);
|
|
chain->demuxer = is_demuxer_element (element);
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
|
|
/* link this element further */
|
|
connect_element (dbin, element, chain);
|
|
|
|
/* try to configure the subtitle encoding property when we can */
|
|
if (g_object_class_find_property (G_OBJECT_GET_CLASS (element),
|
|
"subtitle-encoding")) {
|
|
SUBTITLE_LOCK (dbin);
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"setting subtitle-encoding=%s to element", dbin->encoding);
|
|
g_object_set (G_OBJECT (element), "subtitle-encoding", dbin->encoding,
|
|
NULL);
|
|
SUBTITLE_UNLOCK (dbin);
|
|
subtitle = TRUE;
|
|
} else
|
|
subtitle = FALSE;
|
|
|
|
/* Bring the element to the state of the parent */
|
|
if ((gst_element_set_state (element,
|
|
GST_STATE_PAUSED)) == GST_STATE_CHANGE_FAILURE) {
|
|
GstDecodeElement *dtmp = NULL;
|
|
GstElement *tmp = NULL;
|
|
|
|
GST_WARNING_OBJECT (dbin, "Couldn't set %s to PAUSED",
|
|
GST_ELEMENT_NAME (element));
|
|
|
|
/* Remove all elements in this chain that were just added. No
|
|
* other thread could've added elements in the meantime */
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
do {
|
|
GList *l;
|
|
|
|
dtmp = chain->elements->data;
|
|
tmp = dtmp->element;
|
|
|
|
/* Disconnect any signal handlers that might be connected
|
|
* in connect_element() or analyze_pad() */
|
|
g_signal_handlers_disconnect_by_func (tmp, pad_added_cb, chain);
|
|
g_signal_handlers_disconnect_by_func (tmp, pad_removed_cb, chain);
|
|
g_signal_handlers_disconnect_by_func (tmp, no_more_pads_cb, chain);
|
|
|
|
for (l = chain->pending_pads; l;) {
|
|
GstPendingPad *pp = l->data;
|
|
GList *n;
|
|
|
|
if (GST_PAD_PARENT (pp->pad) != tmp) {
|
|
l = l->next;
|
|
continue;
|
|
}
|
|
|
|
g_signal_handlers_disconnect_by_func (pp->pad, caps_notify_cb, chain);
|
|
gst_pad_remove_probe (pp->pad, pp->event_probe_id);
|
|
gst_object_unref (pp->pad);
|
|
g_slice_free (GstPendingPad, pp);
|
|
|
|
/* Remove element from the list, update list head and go to the
|
|
* next element in the list */
|
|
n = l->next;
|
|
chain->pending_pads = g_list_delete_link (chain->pending_pads, l);
|
|
l = n;
|
|
}
|
|
|
|
if (dtmp->capsfilter) {
|
|
gst_bin_remove (GST_BIN (dbin), dtmp->capsfilter);
|
|
gst_element_set_state (dtmp->capsfilter, GST_STATE_NULL);
|
|
gst_object_unref (dtmp->capsfilter);
|
|
}
|
|
|
|
gst_bin_remove (GST_BIN (dbin), tmp);
|
|
gst_element_set_state (tmp, GST_STATE_NULL);
|
|
|
|
gst_object_unref (tmp);
|
|
g_slice_free (GstDecodeElement, dtmp);
|
|
|
|
chain->elements = g_list_delete_link (chain->elements, chain->elements);
|
|
} while (tmp != element);
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
|
|
continue;
|
|
}
|
|
if (subtitle) {
|
|
SUBTITLE_LOCK (dbin);
|
|
/* we added the element now, add it to the list of subtitle-encoding
|
|
* elements when we can set the property */
|
|
dbin->subtitles = g_list_prepend (dbin->subtitles, element);
|
|
SUBTITLE_UNLOCK (dbin);
|
|
}
|
|
|
|
res = TRUE;
|
|
break;
|
|
}
|
|
|
|
beach:
|
|
if (mqpad)
|
|
gst_object_unref (mqpad);
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstCaps *
|
|
get_pad_caps (GstPad * pad)
|
|
{
|
|
GstCaps *caps;
|
|
|
|
/* first check the pad caps, if this is set, we are positively sure it is
|
|
* fixed and exactly what the element will produce. */
|
|
caps = gst_pad_get_current_caps (pad);
|
|
|
|
/* then use the getcaps function if we don't have caps. These caps might not
|
|
* be fixed in some cases, in which case analyze_new_pad will set up a
|
|
* notify::caps signal to continue autoplugging. */
|
|
if (caps == NULL)
|
|
caps = gst_pad_get_caps (pad, NULL);
|
|
|
|
return caps;
|
|
}
|
|
|
|
static gboolean
|
|
connect_element (GstDecodeBin * dbin, GstElement * element,
|
|
GstDecodeChain * chain)
|
|
{
|
|
GList *pads;
|
|
gboolean res = TRUE;
|
|
gboolean dynamic = FALSE;
|
|
GList *to_connect = NULL;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Attempting to connect element %s [chain:%p] further",
|
|
GST_ELEMENT_NAME (element), chain);
|
|
|
|
/* 1. Loop over pad templates, grabbing existing pads along the way */
|
|
for (pads = GST_ELEMENT_GET_CLASS (element)->padtemplates; pads;
|
|
pads = g_list_next (pads)) {
|
|
GstPadTemplate *templ = GST_PAD_TEMPLATE (pads->data);
|
|
const gchar *templ_name;
|
|
|
|
/* we are only interested in source pads */
|
|
if (GST_PAD_TEMPLATE_DIRECTION (templ) != GST_PAD_SRC)
|
|
continue;
|
|
|
|
templ_name = GST_PAD_TEMPLATE_NAME_TEMPLATE (templ);
|
|
GST_DEBUG_OBJECT (dbin, "got a source pad template %s", templ_name);
|
|
|
|
/* figure out what kind of pad this is */
|
|
switch (GST_PAD_TEMPLATE_PRESENCE (templ)) {
|
|
case GST_PAD_ALWAYS:
|
|
{
|
|
/* get the pad that we need to autoplug */
|
|
GstPad *pad = gst_element_get_static_pad (element, templ_name);
|
|
|
|
if (pad) {
|
|
GST_DEBUG_OBJECT (dbin, "got the pad for always template %s",
|
|
templ_name);
|
|
/* here is the pad, we need to autoplug it */
|
|
to_connect = g_list_prepend (to_connect, pad);
|
|
} else {
|
|
/* strange, pad is marked as always but it's not
|
|
* there. Fix the element */
|
|
GST_WARNING_OBJECT (dbin,
|
|
"could not get the pad for always template %s", templ_name);
|
|
}
|
|
break;
|
|
}
|
|
case GST_PAD_SOMETIMES:
|
|
{
|
|
/* try to get the pad to see if it is already created or
|
|
* not */
|
|
GstPad *pad = gst_element_get_static_pad (element, templ_name);
|
|
|
|
if (pad) {
|
|
GST_DEBUG_OBJECT (dbin, "got the pad for sometimes template %s",
|
|
templ_name);
|
|
/* the pad is created, we need to autoplug it */
|
|
to_connect = g_list_prepend (to_connect, pad);
|
|
} else {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"did not get the sometimes pad of template %s", templ_name);
|
|
/* we have an element that will create dynamic pads */
|
|
dynamic = TRUE;
|
|
}
|
|
break;
|
|
}
|
|
case GST_PAD_REQUEST:
|
|
/* ignore request pads */
|
|
GST_DEBUG_OBJECT (dbin, "ignoring request padtemplate %s", templ_name);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* 2. if there are more potential pads, connect to relevant signals */
|
|
if (dynamic) {
|
|
GST_LOG_OBJECT (dbin, "Adding signals to element %s in chain %p",
|
|
GST_ELEMENT_NAME (element), chain);
|
|
g_signal_connect (G_OBJECT (element), "pad-added",
|
|
G_CALLBACK (pad_added_cb), chain);
|
|
g_signal_connect (G_OBJECT (element), "pad-removed",
|
|
G_CALLBACK (pad_removed_cb), chain);
|
|
g_signal_connect (G_OBJECT (element), "no-more-pads",
|
|
G_CALLBACK (no_more_pads_cb), chain);
|
|
}
|
|
|
|
/* 3. for every available pad, connect it */
|
|
for (pads = to_connect; pads; pads = g_list_next (pads)) {
|
|
GstPad *pad = GST_PAD_CAST (pads->data);
|
|
GstCaps *caps;
|
|
|
|
caps = get_pad_caps (pad);
|
|
analyze_new_pad (dbin, element, pad, caps, chain);
|
|
if (caps)
|
|
gst_caps_unref (caps);
|
|
|
|
gst_object_unref (pad);
|
|
}
|
|
g_list_free (to_connect);
|
|
|
|
return res;
|
|
}
|
|
|
|
/* expose_pad:
|
|
*
|
|
* Expose the given pad on the chain as a decoded pad.
|
|
*/
|
|
static void
|
|
expose_pad (GstDecodeBin * dbin, GstElement * src, GstDecodePad * dpad,
|
|
GstPad * pad, GstCaps * caps, GstDecodeChain * chain)
|
|
{
|
|
GstPad *mqpad = NULL;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "pad %s:%s, chain:%p",
|
|
GST_DEBUG_PAD_NAME (pad), chain);
|
|
|
|
/* If this is the first pad for this chain, there are no other elements
|
|
* and the source element is not the multiqueue we must link through the
|
|
* multiqueue.
|
|
*
|
|
* This is the case if a demuxer directly exposed a raw pad.
|
|
*/
|
|
if (chain->parent && !chain->elements && src != chain->parent->multiqueue) {
|
|
GST_LOG_OBJECT (src, "connecting the pad through multiqueue");
|
|
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (dpad), NULL);
|
|
if (!(mqpad = gst_decode_group_control_demuxer_pad (chain->parent, pad)))
|
|
goto beach;
|
|
pad = mqpad;
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (dpad), pad);
|
|
}
|
|
|
|
gst_decode_pad_activate (dpad, chain);
|
|
chain->endpad = gst_object_ref (dpad);
|
|
chain->endcaps = gst_caps_ref (caps);
|
|
|
|
EXPOSE_LOCK (dbin);
|
|
if (gst_decode_chain_is_complete (dbin->decode_chain)) {
|
|
gst_decode_bin_expose (dbin);
|
|
}
|
|
EXPOSE_UNLOCK (dbin);
|
|
|
|
if (mqpad)
|
|
gst_object_unref (mqpad);
|
|
|
|
beach:
|
|
return;
|
|
}
|
|
|
|
/* check_upstream_seekable:
|
|
*
|
|
* Check if upstream is seekable.
|
|
*/
|
|
static void
|
|
check_upstream_seekable (GstDecodeBin * dbin, GstPad * pad)
|
|
{
|
|
GstQuery *query;
|
|
gint64 start = -1, stop = -1;
|
|
|
|
dbin->upstream_seekable = FALSE;
|
|
|
|
query = gst_query_new_seeking (GST_FORMAT_BYTES);
|
|
if (!gst_pad_peer_query (pad, query)) {
|
|
GST_DEBUG_OBJECT (dbin, "seeking query failed");
|
|
gst_query_unref (query);
|
|
return;
|
|
}
|
|
|
|
gst_query_parse_seeking (query, NULL, &dbin->upstream_seekable,
|
|
&start, &stop);
|
|
|
|
gst_query_unref (query);
|
|
|
|
/* try harder to query upstream size if we didn't get it the first time */
|
|
if (dbin->upstream_seekable && stop == -1) {
|
|
GST_DEBUG_OBJECT (dbin, "doing duration query to fix up unset stop");
|
|
gst_pad_query_peer_duration (pad, GST_FORMAT_BYTES, &stop);
|
|
}
|
|
|
|
/* if upstream doesn't know the size, it's likely that it's not seekable in
|
|
* practice even if it technically may be seekable */
|
|
if (dbin->upstream_seekable && (start != 0 || stop <= start)) {
|
|
GST_DEBUG_OBJECT (dbin, "seekable but unknown start/stop -> disable");
|
|
dbin->upstream_seekable = FALSE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (dbin, "upstream seekable: %d", dbin->upstream_seekable);
|
|
}
|
|
|
|
static void
|
|
type_found (GstElement * typefind, guint probability,
|
|
GstCaps * caps, GstDecodeBin * decode_bin)
|
|
{
|
|
GstPad *pad, *sink_pad;
|
|
|
|
GST_DEBUG_OBJECT (decode_bin, "typefind found caps %" GST_PTR_FORMAT, caps);
|
|
|
|
/* If the typefinder (but not something else) finds text/plain - i.e. that's
|
|
* the top-level type of the file - then error out.
|
|
*/
|
|
if (gst_structure_has_name (gst_caps_get_structure (caps, 0), "text/plain")) {
|
|
GST_ELEMENT_ERROR (decode_bin, STREAM, WRONG_TYPE,
|
|
(_("This appears to be a text file")),
|
|
("decodebin cannot decode plain text files"));
|
|
goto exit;
|
|
}
|
|
|
|
/* FIXME: we can only deal with one type, we don't yet support dynamically changing
|
|
* caps from the typefind element */
|
|
if (decode_bin->have_type || decode_bin->decode_chain)
|
|
goto exit;
|
|
|
|
decode_bin->have_type = TRUE;
|
|
|
|
pad = gst_element_get_static_pad (typefind, "src");
|
|
sink_pad = gst_element_get_static_pad (typefind, "sink");
|
|
|
|
/* if upstream is seekable we can safely set a limit in time to the queues so
|
|
* that streams at low bitrates can preroll */
|
|
check_upstream_seekable (decode_bin, sink_pad);
|
|
|
|
/* need some lock here to prevent race with shutdown state change
|
|
* which might yank away e.g. decode_chain while building stuff here.
|
|
* In typical cases, STREAM_LOCK is held and handles that, it need not
|
|
* be held (if called from a proxied setcaps), so grab it anyway */
|
|
GST_PAD_STREAM_LOCK (sink_pad);
|
|
decode_bin->decode_chain = gst_decode_chain_new (decode_bin, NULL, pad);
|
|
analyze_new_pad (decode_bin, typefind, pad, caps, decode_bin->decode_chain);
|
|
GST_PAD_STREAM_UNLOCK (sink_pad);
|
|
|
|
gst_object_unref (sink_pad);
|
|
gst_object_unref (pad);
|
|
|
|
exit:
|
|
return;
|
|
}
|
|
|
|
static GstProbeReturn
|
|
pad_event_cb (GstPad * pad, GstProbeType type, gpointer type_data,
|
|
gpointer data)
|
|
{
|
|
GstEvent *event = type_data;
|
|
GstPendingPad *ppad = (GstPendingPad *) data;
|
|
GstDecodeChain *chain = ppad->chain;
|
|
GstDecodeBin *dbin = chain->dbin;
|
|
|
|
g_assert (ppad);
|
|
g_assert (chain);
|
|
g_assert (dbin);
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_EOS:
|
|
GST_DEBUG_OBJECT (dbin, "Received EOS on a non final pad, this stream "
|
|
"ended too early");
|
|
chain->deadend = TRUE;
|
|
/* we don't set the endcaps because NULL endcaps means early EOS */
|
|
EXPOSE_LOCK (dbin);
|
|
if (gst_decode_chain_is_complete (dbin->decode_chain))
|
|
gst_decode_bin_expose (dbin);
|
|
EXPOSE_UNLOCK (dbin);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return GST_PROBE_OK;
|
|
}
|
|
|
|
static void
|
|
pad_added_cb (GstElement * element, GstPad * pad, GstDecodeChain * chain)
|
|
{
|
|
GstCaps *caps;
|
|
GstDecodeBin *dbin;
|
|
|
|
dbin = chain->dbin;
|
|
|
|
GST_DEBUG_OBJECT (pad, "pad added, chain:%p", chain);
|
|
|
|
caps = get_pad_caps (pad);
|
|
analyze_new_pad (dbin, element, pad, caps, chain);
|
|
if (caps)
|
|
gst_caps_unref (caps);
|
|
|
|
EXPOSE_LOCK (dbin);
|
|
if (gst_decode_chain_is_complete (dbin->decode_chain)) {
|
|
GST_LOG_OBJECT (dbin,
|
|
"That was the last dynamic object, now attempting to expose the group");
|
|
if (!gst_decode_bin_expose (dbin))
|
|
GST_WARNING_OBJECT (dbin, "Couldn't expose group");
|
|
}
|
|
EXPOSE_UNLOCK (dbin);
|
|
}
|
|
|
|
static void
|
|
pad_removed_cb (GstElement * element, GstPad * pad, GstDecodeChain * chain)
|
|
{
|
|
GList *l;
|
|
|
|
GST_LOG_OBJECT (pad, "pad removed, chain:%p", chain);
|
|
|
|
/* In fact, we don't have to do anything here, the active group will be
|
|
* removed when the group's multiqueue is drained */
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
for (l = chain->pending_pads; l; l = l->next) {
|
|
GstPendingPad *ppad = l->data;
|
|
GstPad *opad = ppad->pad;
|
|
|
|
if (pad == opad) {
|
|
g_signal_handlers_disconnect_by_func (pad, caps_notify_cb, chain);
|
|
gst_pending_pad_free (ppad);
|
|
chain->pending_pads = g_list_delete_link (chain->pending_pads, l);
|
|
break;
|
|
}
|
|
}
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
}
|
|
|
|
static void
|
|
no_more_pads_cb (GstElement * element, GstDecodeChain * chain)
|
|
{
|
|
GstDecodeGroup *group = NULL;
|
|
|
|
GST_LOG_OBJECT (element, "got no more pads");
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
if (!chain->elements
|
|
|| ((GstDecodeElement *) chain->elements->data)->element != element) {
|
|
GST_LOG_OBJECT (chain->dbin, "no-more-pads from old chain element '%s'",
|
|
GST_OBJECT_NAME (element));
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
return;
|
|
} else if (!chain->demuxer) {
|
|
GST_LOG_OBJECT (chain->dbin, "no-more-pads from a non-demuxer element '%s'",
|
|
GST_OBJECT_NAME (element));
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
return;
|
|
}
|
|
|
|
/* when we received no_more_pads, we can complete the pads of the chain */
|
|
if (!chain->next_groups && chain->active_group) {
|
|
group = chain->active_group;
|
|
} else if (chain->next_groups) {
|
|
group = chain->next_groups->data;
|
|
}
|
|
if (!group) {
|
|
GST_ERROR_OBJECT (chain->dbin, "can't find group for element");
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
return;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (element, "Setting group %p to complete", group);
|
|
|
|
group->no_more_pads = TRUE;
|
|
/* this group has prerolled enough to not need more pads,
|
|
* we can probably set its buffering state to playing now */
|
|
GST_DEBUG_OBJECT (group->dbin, "Setting group %p multiqueue to "
|
|
"'playing' buffering mode", group);
|
|
decodebin_set_queue_size (group->dbin, group->multiqueue, FALSE);
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
|
|
EXPOSE_LOCK (chain->dbin);
|
|
if (gst_decode_chain_is_complete (chain->dbin->decode_chain)) {
|
|
gst_decode_bin_expose (chain->dbin);
|
|
}
|
|
EXPOSE_UNLOCK (chain->dbin);
|
|
}
|
|
|
|
static void
|
|
caps_notify_cb (GstPad * pad, GParamSpec * unused, GstDecodeChain * chain)
|
|
{
|
|
GstElement *element;
|
|
GList *l;
|
|
|
|
GST_LOG_OBJECT (pad, "Notified caps for pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
|
|
/* Disconnect this; if we still need it, we'll reconnect to this in
|
|
* analyze_new_pad */
|
|
g_signal_handlers_disconnect_by_func (pad, caps_notify_cb, chain);
|
|
|
|
element = GST_ELEMENT_CAST (gst_pad_get_parent (pad));
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
for (l = chain->pending_pads; l; l = l->next) {
|
|
GstPendingPad *ppad = l->data;
|
|
if (ppad->pad == pad) {
|
|
gst_pending_pad_free (ppad);
|
|
chain->pending_pads = g_list_delete_link (chain->pending_pads, l);
|
|
break;
|
|
}
|
|
}
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
|
|
pad_added_cb (element, pad, chain);
|
|
|
|
gst_object_unref (element);
|
|
}
|
|
|
|
/* Decide whether an element is a demuxer based on the
|
|
* klass and number/type of src pad templates it has */
|
|
static gboolean
|
|
is_demuxer_element (GstElement * srcelement)
|
|
{
|
|
GstElementFactory *srcfactory;
|
|
GstElementClass *elemclass;
|
|
GList *walk;
|
|
const gchar *klass;
|
|
gint potential_src_pads = 0;
|
|
|
|
srcfactory = gst_element_get_factory (srcelement);
|
|
klass = gst_element_factory_get_klass (srcfactory);
|
|
|
|
/* Can't be a demuxer unless it has Demux in the klass name */
|
|
if (!strstr (klass, "Demux"))
|
|
return FALSE;
|
|
|
|
/* Walk the src pad templates and count how many the element
|
|
* might produce */
|
|
elemclass = GST_ELEMENT_GET_CLASS (srcelement);
|
|
|
|
walk = gst_element_class_get_pad_template_list (elemclass);
|
|
while (walk != NULL) {
|
|
GstPadTemplate *templ;
|
|
|
|
templ = (GstPadTemplate *) walk->data;
|
|
if (GST_PAD_TEMPLATE_DIRECTION (templ) == GST_PAD_SRC) {
|
|
switch (GST_PAD_TEMPLATE_PRESENCE (templ)) {
|
|
case GST_PAD_ALWAYS:
|
|
case GST_PAD_SOMETIMES:
|
|
if (strstr (GST_PAD_TEMPLATE_NAME_TEMPLATE (templ), "%"))
|
|
potential_src_pads += 2; /* Might make multiple pads */
|
|
else
|
|
potential_src_pads += 1;
|
|
break;
|
|
case GST_PAD_REQUEST:
|
|
potential_src_pads += 2;
|
|
break;
|
|
}
|
|
}
|
|
walk = g_list_next (walk);
|
|
}
|
|
|
|
if (potential_src_pads < 2)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Returns TRUE if the caps are compatible with the caps specified in the 'caps'
|
|
* property (which by default are the raw caps)
|
|
*
|
|
* The decodebin_lock should be taken !
|
|
*/
|
|
static gboolean
|
|
are_final_caps (GstDecodeBin * dbin, GstCaps * caps)
|
|
{
|
|
gboolean res;
|
|
|
|
GST_LOG_OBJECT (dbin, "Checking with caps %" GST_PTR_FORMAT, caps);
|
|
|
|
/* lock for getting the caps */
|
|
GST_OBJECT_LOCK (dbin);
|
|
res = gst_caps_can_intersect (dbin->caps, caps);
|
|
GST_OBJECT_UNLOCK (dbin);
|
|
|
|
GST_LOG_OBJECT (dbin, "Caps are %sfinal caps", res ? "" : "not ");
|
|
|
|
return res;
|
|
}
|
|
|
|
/****
|
|
* GstDecodeChain functions
|
|
****/
|
|
|
|
/* gst_decode_chain_get_current_group:
|
|
*
|
|
* Returns the current group of this chain, to which
|
|
* new chains should be attached or NULL if the last
|
|
* group didn't have no-more-pads.
|
|
*
|
|
* Not MT-safe: Call with parent chain lock!
|
|
*/
|
|
static GstDecodeGroup *
|
|
gst_decode_chain_get_current_group (GstDecodeChain * chain)
|
|
{
|
|
GstDecodeGroup *group;
|
|
|
|
if (!chain->next_groups && chain->active_group
|
|
&& chain->active_group->overrun && !chain->active_group->no_more_pads) {
|
|
GST_WARNING_OBJECT (chain->dbin,
|
|
"Currently active group %p is exposed"
|
|
" and wants to add a new pad without having signaled no-more-pads",
|
|
chain->active_group);
|
|
return NULL;
|
|
}
|
|
|
|
if (chain->next_groups && (group = chain->next_groups->data) && group->overrun
|
|
&& !group->no_more_pads) {
|
|
GST_WARNING_OBJECT (chain->dbin,
|
|
"Currently newest pending group %p "
|
|
"had overflow but didn't signal no-more-pads", group);
|
|
return NULL;
|
|
}
|
|
|
|
/* Now we know that we can really return something useful */
|
|
if (!chain->active_group) {
|
|
chain->active_group = group = gst_decode_group_new (chain->dbin, chain);
|
|
} else if (!chain->active_group->overrun
|
|
&& !chain->active_group->no_more_pads) {
|
|
group = chain->active_group;
|
|
} else if (chain->next_groups && (group = chain->next_groups->data)
|
|
&& !group->overrun && !group->no_more_pads) {
|
|
/* group = chain->next_groups->data */
|
|
} else {
|
|
group = gst_decode_group_new (chain->dbin, chain);
|
|
chain->next_groups = g_list_prepend (chain->next_groups, group);
|
|
}
|
|
|
|
return group;
|
|
}
|
|
|
|
static void gst_decode_group_free_internal (GstDecodeGroup * group,
|
|
gboolean hide);
|
|
|
|
static void
|
|
gst_decode_chain_free_internal (GstDecodeChain * chain, gboolean hide)
|
|
{
|
|
GList *l;
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
|
|
GST_DEBUG_OBJECT (chain->dbin, "%s chain %p", (hide ? "Hiding" : "Freeing"),
|
|
chain);
|
|
|
|
if (chain->active_group) {
|
|
gst_decode_group_free_internal (chain->active_group, hide);
|
|
if (!hide)
|
|
chain->active_group = NULL;
|
|
}
|
|
|
|
for (l = chain->next_groups; l; l = l->next) {
|
|
gst_decode_group_free_internal ((GstDecodeGroup *) l->data, hide);
|
|
if (!hide)
|
|
l->data = NULL;
|
|
}
|
|
if (!hide) {
|
|
g_list_free (chain->next_groups);
|
|
chain->next_groups = NULL;
|
|
}
|
|
|
|
if (!hide) {
|
|
for (l = chain->old_groups; l; l = l->next) {
|
|
GstDecodeGroup *group = l->data;
|
|
|
|
gst_decode_group_free (group);
|
|
}
|
|
g_list_free (chain->old_groups);
|
|
chain->old_groups = NULL;
|
|
}
|
|
|
|
for (l = chain->pending_pads; l; l = l->next) {
|
|
GstPendingPad *ppad = l->data;
|
|
GstPad *pad = ppad->pad;
|
|
|
|
g_signal_handlers_disconnect_by_func (pad, caps_notify_cb, chain);
|
|
gst_pending_pad_free (ppad);
|
|
l->data = NULL;
|
|
}
|
|
g_list_free (chain->pending_pads);
|
|
chain->pending_pads = NULL;
|
|
|
|
for (l = chain->elements; l; l = l->next) {
|
|
GstDecodeElement *delem = l->data;
|
|
GstElement *element = delem->element;
|
|
|
|
g_signal_handlers_disconnect_by_func (element, pad_added_cb, chain);
|
|
g_signal_handlers_disconnect_by_func (element, pad_removed_cb, chain);
|
|
g_signal_handlers_disconnect_by_func (element, no_more_pads_cb, chain);
|
|
|
|
if (delem->capsfilter) {
|
|
if (GST_OBJECT_PARENT (delem->capsfilter) ==
|
|
GST_OBJECT_CAST (chain->dbin))
|
|
gst_bin_remove (GST_BIN_CAST (chain->dbin), delem->capsfilter);
|
|
if (!hide) {
|
|
gst_element_set_state (delem->capsfilter, GST_STATE_NULL);
|
|
}
|
|
}
|
|
|
|
if (GST_OBJECT_PARENT (element) == GST_OBJECT_CAST (chain->dbin))
|
|
gst_bin_remove (GST_BIN_CAST (chain->dbin), element);
|
|
if (!hide) {
|
|
gst_element_set_state (element, GST_STATE_NULL);
|
|
}
|
|
|
|
SUBTITLE_LOCK (chain->dbin);
|
|
/* remove possible subtitle element */
|
|
chain->dbin->subtitles = g_list_remove (chain->dbin->subtitles, element);
|
|
SUBTITLE_UNLOCK (chain->dbin);
|
|
|
|
if (!hide) {
|
|
if (delem->capsfilter) {
|
|
gst_object_unref (delem->capsfilter);
|
|
delem->capsfilter = NULL;
|
|
}
|
|
|
|
gst_object_unref (element);
|
|
l->data = NULL;
|
|
|
|
g_slice_free (GstDecodeElement, delem);
|
|
}
|
|
}
|
|
if (!hide) {
|
|
g_list_free (chain->elements);
|
|
chain->elements = NULL;
|
|
}
|
|
|
|
if (chain->endpad) {
|
|
if (chain->endpad->exposed) {
|
|
gst_element_remove_pad (GST_ELEMENT_CAST (chain->dbin),
|
|
GST_PAD_CAST (chain->endpad));
|
|
}
|
|
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (chain->endpad), NULL);
|
|
chain->endpad->exposed = FALSE;
|
|
if (!hide) {
|
|
gst_object_unref (chain->endpad);
|
|
chain->endpad = NULL;
|
|
}
|
|
}
|
|
|
|
if (chain->pad) {
|
|
gst_object_unref (chain->pad);
|
|
chain->pad = NULL;
|
|
}
|
|
|
|
if (chain->endcaps) {
|
|
gst_caps_unref (chain->endcaps);
|
|
chain->endcaps = NULL;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (chain->dbin, "%s chain %p", (hide ? "Hidden" : "Freed"),
|
|
chain);
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
if (!hide) {
|
|
g_mutex_free (chain->lock);
|
|
g_slice_free (GstDecodeChain, chain);
|
|
}
|
|
}
|
|
|
|
/* gst_decode_chain_free:
|
|
*
|
|
* Completely frees and removes the chain and all
|
|
* child groups from decodebin.
|
|
*
|
|
* MT-safe, don't hold the chain lock or any child chain's lock
|
|
* when calling this!
|
|
*/
|
|
static void
|
|
gst_decode_chain_free (GstDecodeChain * chain)
|
|
{
|
|
gst_decode_chain_free_internal (chain, FALSE);
|
|
}
|
|
|
|
/* gst_decode_chain_new:
|
|
*
|
|
* Creates a new decode chain and initializes it.
|
|
*
|
|
* It's up to the caller to add it to the list of child chains of
|
|
* a group!
|
|
*/
|
|
static GstDecodeChain *
|
|
gst_decode_chain_new (GstDecodeBin * dbin, GstDecodeGroup * parent,
|
|
GstPad * pad)
|
|
{
|
|
GstDecodeChain *chain = g_slice_new0 (GstDecodeChain);
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Creating new chain %p with parent group %p", chain,
|
|
parent);
|
|
|
|
chain->dbin = dbin;
|
|
chain->parent = parent;
|
|
chain->lock = g_mutex_new ();
|
|
chain->pad = gst_object_ref (pad);
|
|
|
|
return chain;
|
|
}
|
|
|
|
/****
|
|
* GstDecodeGroup functions
|
|
****/
|
|
|
|
/* The overrun callback is used to expose groups that have not yet had their
|
|
* no_more_pads called while the (large) multiqueue overflowed. When this
|
|
* happens we must assume that the no_more_pads will not arrive anymore and we
|
|
* must expose the pads that we have.
|
|
*/
|
|
static void
|
|
multi_queue_overrun_cb (GstElement * queue, GstDecodeGroup * group)
|
|
{
|
|
GstDecodeBin *dbin;
|
|
|
|
dbin = group->dbin;
|
|
|
|
GST_LOG_OBJECT (dbin, "multiqueue '%s' (%p) is full", GST_OBJECT_NAME (queue),
|
|
queue);
|
|
|
|
group->overrun = TRUE;
|
|
|
|
/* FIXME: We should make sure that everything gets exposed now
|
|
* even if child chains are not complete because the will never
|
|
* be complete! Ignore any non-complete chains when exposing
|
|
* and never expose them later
|
|
*/
|
|
|
|
EXPOSE_LOCK (dbin);
|
|
if (gst_decode_chain_is_complete (dbin->decode_chain)) {
|
|
if (!gst_decode_bin_expose (dbin))
|
|
GST_WARNING_OBJECT (dbin, "Couldn't expose group");
|
|
}
|
|
EXPOSE_UNLOCK (group->dbin);
|
|
}
|
|
|
|
static void
|
|
gst_decode_group_free_internal (GstDecodeGroup * group, gboolean hide)
|
|
{
|
|
GList *l;
|
|
|
|
GST_DEBUG_OBJECT (group->dbin, "%s group %p", (hide ? "Hiding" : "Freeing"),
|
|
group);
|
|
for (l = group->children; l; l = l->next) {
|
|
GstDecodeChain *chain = (GstDecodeChain *) l->data;
|
|
|
|
gst_decode_chain_free_internal (chain, hide);
|
|
if (!hide)
|
|
l->data = NULL;
|
|
}
|
|
if (!hide) {
|
|
g_list_free (group->children);
|
|
group->children = NULL;
|
|
}
|
|
|
|
if (!hide) {
|
|
for (l = group->reqpads; l; l = l->next) {
|
|
GstPad *pad = l->data;
|
|
|
|
gst_element_release_request_pad (group->multiqueue, pad);
|
|
gst_object_unref (pad);
|
|
l->data = NULL;
|
|
}
|
|
g_list_free (group->reqpads);
|
|
group->reqpads = NULL;
|
|
}
|
|
|
|
if (group->multiqueue) {
|
|
if (group->overrunsig) {
|
|
g_signal_handler_disconnect (group->multiqueue, group->overrunsig);
|
|
group->overrunsig = 0;
|
|
}
|
|
|
|
if (GST_OBJECT_PARENT (group->multiqueue) == GST_OBJECT_CAST (group->dbin))
|
|
gst_bin_remove (GST_BIN_CAST (group->dbin), group->multiqueue);
|
|
if (!hide) {
|
|
gst_element_set_state (group->multiqueue, GST_STATE_NULL);
|
|
gst_object_unref (group->multiqueue);
|
|
group->multiqueue = NULL;
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (group->dbin, "%s group %p", (hide ? "Hided" : "Freed"),
|
|
group);
|
|
if (!hide)
|
|
g_slice_free (GstDecodeGroup, group);
|
|
}
|
|
|
|
/* gst_decode_group_free:
|
|
*
|
|
* Completely frees and removes the decode group and all
|
|
* it's children.
|
|
*
|
|
* Never call this from any streaming thread!
|
|
*
|
|
* Not MT-safe, call with parent's chain lock!
|
|
*/
|
|
static void
|
|
gst_decode_group_free (GstDecodeGroup * group)
|
|
{
|
|
gst_decode_group_free_internal (group, FALSE);
|
|
}
|
|
|
|
/* gst_decode_group_hide:
|
|
*
|
|
* Hide the decode group only, this means that
|
|
* all child endpads are removed from decodebin
|
|
* and all signals are unconnected.
|
|
*
|
|
* No element is set to NULL state and completely
|
|
* unrefed here.
|
|
*
|
|
* Can be called from streaming threads.
|
|
*
|
|
* Not MT-safe, call with parent's chain lock!
|
|
*/
|
|
static void
|
|
gst_decode_group_hide (GstDecodeGroup * group)
|
|
{
|
|
gst_decode_group_free_internal (group, TRUE);
|
|
}
|
|
|
|
/* configure queue sizes, this depends on the buffering method and if we are
|
|
* playing or prerolling. */
|
|
static void
|
|
decodebin_set_queue_size (GstDecodeBin * dbin, GstElement * multiqueue,
|
|
gboolean preroll)
|
|
{
|
|
guint max_bytes, max_buffers;
|
|
guint64 max_time;
|
|
|
|
if (preroll || dbin->use_buffering) {
|
|
/* takes queue limits, initially we only queue up up to the max bytes limit,
|
|
* with a default of 2MB. we use the same values for buffering mode. */
|
|
if ((max_bytes = dbin->max_size_bytes) == 0)
|
|
max_bytes = AUTO_PREROLL_SIZE_BYTES;
|
|
if ((max_buffers = dbin->max_size_buffers) == 0)
|
|
max_buffers = AUTO_PREROLL_SIZE_BUFFERS;
|
|
if ((max_time = dbin->max_size_time) == 0)
|
|
max_time = dbin->upstream_seekable ? AUTO_PREROLL_SEEKABLE_SIZE_TIME :
|
|
AUTO_PREROLL_NOT_SEEKABLE_SIZE_TIME;
|
|
} else {
|
|
/* update runtime limits. At runtime, we try to keep the amount of buffers
|
|
* in the queues as low as possible (but at least 5 buffers). */
|
|
if ((max_bytes = dbin->max_size_bytes) == 0)
|
|
max_bytes = AUTO_PLAY_SIZE_BYTES;
|
|
if ((max_buffers = dbin->max_size_buffers) == 0)
|
|
max_buffers = AUTO_PLAY_SIZE_BUFFERS;
|
|
if ((max_time = dbin->max_size_time) == 0)
|
|
max_time = AUTO_PLAY_SIZE_TIME;
|
|
}
|
|
|
|
g_object_set (multiqueue,
|
|
"max-size-bytes", max_bytes, "max-size-time", max_time,
|
|
"max-size-buffers", max_buffers, NULL);
|
|
}
|
|
|
|
/* gst_decode_group_new:
|
|
* @dbin: Parent decodebin
|
|
* @parent: Parent chain or %NULL
|
|
*
|
|
* Creates a new GstDecodeGroup. It is up to the caller to add it to the list
|
|
* of groups.
|
|
*/
|
|
static GstDecodeGroup *
|
|
gst_decode_group_new (GstDecodeBin * dbin, GstDecodeChain * parent)
|
|
{
|
|
GstDecodeGroup *group = g_slice_new0 (GstDecodeGroup);
|
|
GstElement *mq;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Creating new group %p with parent chain %p", group,
|
|
parent);
|
|
|
|
group->dbin = dbin;
|
|
group->parent = parent;
|
|
|
|
mq = group->multiqueue = gst_element_factory_make ("multiqueue", NULL);
|
|
if (G_UNLIKELY (!group->multiqueue))
|
|
goto missing_multiqueue;
|
|
|
|
/* default is for use-buffering is FALSE */
|
|
if (dbin->use_buffering) {
|
|
g_object_set (mq,
|
|
"use-buffering", TRUE,
|
|
"low-percent", dbin->low_percent,
|
|
"high-percent", dbin->high_percent, NULL);
|
|
}
|
|
|
|
/* configure queue sizes for preroll */
|
|
decodebin_set_queue_size (dbin, mq, TRUE);
|
|
|
|
group->overrunsig = g_signal_connect (G_OBJECT (mq), "overrun",
|
|
G_CALLBACK (multi_queue_overrun_cb), group);
|
|
|
|
gst_bin_add (GST_BIN (dbin), gst_object_ref (mq));
|
|
gst_element_set_state (mq, GST_STATE_PAUSED);
|
|
|
|
return group;
|
|
|
|
/* ERRORS */
|
|
missing_multiqueue:
|
|
{
|
|
gst_element_post_message (GST_ELEMENT_CAST (dbin),
|
|
gst_missing_element_message_new (GST_ELEMENT_CAST (dbin),
|
|
"multiqueue"));
|
|
GST_ELEMENT_ERROR (dbin, CORE, MISSING_PLUGIN, (NULL), ("no multiqueue!"));
|
|
g_slice_free (GstDecodeGroup, group);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* gst_decode_group_control_demuxer_pad
|
|
*
|
|
* Adds a new demuxer srcpad to the given group.
|
|
*
|
|
* Returns the srcpad of the multiqueue corresponding the given pad.
|
|
* Returns NULL if there was an error.
|
|
*/
|
|
static GstPad *
|
|
gst_decode_group_control_demuxer_pad (GstDecodeGroup * group, GstPad * pad)
|
|
{
|
|
GstDecodeBin *dbin;
|
|
GstPad *srcpad, *sinkpad;
|
|
GstIterator *it = NULL;
|
|
GValue item = { 0, };
|
|
|
|
dbin = group->dbin;
|
|
|
|
GST_LOG_OBJECT (dbin, "group:%p pad %s:%s", group, GST_DEBUG_PAD_NAME (pad));
|
|
|
|
srcpad = NULL;
|
|
|
|
if (G_UNLIKELY (!group->multiqueue))
|
|
return NULL;
|
|
|
|
if (!(sinkpad = gst_element_get_request_pad (group->multiqueue, "sink%d"))) {
|
|
GST_ERROR_OBJECT (dbin, "Couldn't get sinkpad from multiqueue");
|
|
return NULL;
|
|
}
|
|
|
|
if ((gst_pad_link (pad, sinkpad) != GST_PAD_LINK_OK)) {
|
|
GST_ERROR_OBJECT (dbin, "Couldn't link demuxer and multiqueue");
|
|
goto error;
|
|
}
|
|
|
|
it = gst_pad_iterate_internal_links (sinkpad);
|
|
|
|
if (!it || (gst_iterator_next (it, &item)) != GST_ITERATOR_OK
|
|
|| ((srcpad = g_value_dup_object (&item)) == NULL)) {
|
|
GST_ERROR_OBJECT (dbin,
|
|
"Couldn't get srcpad from multiqueue for sinkpad %" GST_PTR_FORMAT,
|
|
sinkpad);
|
|
goto error;
|
|
}
|
|
CHAIN_MUTEX_LOCK (group->parent);
|
|
group->reqpads = g_list_prepend (group->reqpads, gst_object_ref (sinkpad));
|
|
CHAIN_MUTEX_UNLOCK (group->parent);
|
|
|
|
beach:
|
|
g_value_unset (&item);
|
|
if (it)
|
|
gst_iterator_free (it);
|
|
gst_object_unref (sinkpad);
|
|
return srcpad;
|
|
|
|
error:
|
|
gst_element_release_request_pad (group->multiqueue, sinkpad);
|
|
goto beach;
|
|
}
|
|
|
|
/* gst_decode_group_is_complete:
|
|
*
|
|
* Checks if the group is complete, this means that
|
|
* a) overrun of the multiqueue or no-more-pads happened
|
|
* b) all child chains are complete
|
|
*
|
|
* Not MT-safe, always call with decodebin expose lock
|
|
*/
|
|
static gboolean
|
|
gst_decode_group_is_complete (GstDecodeGroup * group)
|
|
{
|
|
GList *l;
|
|
gboolean complete = TRUE;
|
|
|
|
if (!group->overrun && !group->no_more_pads) {
|
|
complete = FALSE;
|
|
goto out;
|
|
}
|
|
|
|
for (l = group->children; l; l = l->next) {
|
|
GstDecodeChain *chain = l->data;
|
|
|
|
if (!gst_decode_chain_is_complete (chain)) {
|
|
complete = FALSE;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
GST_DEBUG_OBJECT (group->dbin, "Group %p is complete: %d", group, complete);
|
|
return complete;
|
|
}
|
|
|
|
/* gst_decode_chain_is_complete:
|
|
*
|
|
* Returns TRUE if the chain is complete, this means either
|
|
* a) This chain is a dead end, i.e. we have no suitable plugins
|
|
* b) This chain ends in an endpad and this is blocked or exposed
|
|
*
|
|
* Not MT-safe, always call with decodebin expose lock
|
|
*/
|
|
static gboolean
|
|
gst_decode_chain_is_complete (GstDecodeChain * chain)
|
|
{
|
|
gboolean complete = FALSE;
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
if (chain->deadend) {
|
|
complete = TRUE;
|
|
goto out;
|
|
}
|
|
|
|
if (chain->endpad && (chain->endpad->blocked || chain->endpad->exposed)) {
|
|
complete = TRUE;
|
|
goto out;
|
|
}
|
|
|
|
if (chain->demuxer) {
|
|
if (chain->active_group
|
|
&& gst_decode_group_is_complete (chain->active_group)) {
|
|
complete = TRUE;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
GST_DEBUG_OBJECT (chain->dbin, "Chain %p is complete: %d", chain, complete);
|
|
return complete;
|
|
}
|
|
|
|
static gboolean
|
|
drain_and_switch_chains (GstDecodeChain * chain, GstDecodePad * drainpad,
|
|
gboolean * last_group, gboolean * drained, gboolean * switched);
|
|
/* drain_and_switch_chains/groups:
|
|
*
|
|
* CALL WITH CHAIN LOCK (or group parent) TAKEN !
|
|
*
|
|
* Goes down the chains/groups until it finds the chain
|
|
* to which the drainpad belongs.
|
|
*
|
|
* It marks that pad/chain as drained and then will figure
|
|
* out which group to switch to or not.
|
|
*
|
|
* last_chain will be set to TRUE if the group to which the
|
|
* pad belongs is the last one.
|
|
*
|
|
* drained will be set to TRUE if the chain/group is drained.
|
|
*
|
|
* Returns: TRUE if the chain contained the target pad */
|
|
static gboolean
|
|
drain_and_switch_group (GstDecodeGroup * group, GstDecodePad * drainpad,
|
|
gboolean * last_group, gboolean * drained, gboolean * switched)
|
|
{
|
|
gboolean handled = FALSE;
|
|
gboolean alldrained = TRUE;
|
|
GList *tmp;
|
|
|
|
GST_DEBUG ("Checking group %p (target pad %s:%s)",
|
|
group, GST_DEBUG_PAD_NAME (drainpad));
|
|
|
|
/* Definitely can't be in drained groups */
|
|
if (G_UNLIKELY (group->drained)) {
|
|
goto beach;
|
|
}
|
|
|
|
/* Figure out if all our chains are drained with the
|
|
* new information */
|
|
for (tmp = group->children; tmp; tmp = tmp->next) {
|
|
GstDecodeChain *chain = (GstDecodeChain *) tmp->data;
|
|
gboolean subdrained = FALSE;
|
|
|
|
handled |=
|
|
drain_and_switch_chains (chain, drainpad, last_group, &subdrained,
|
|
switched);
|
|
if (!subdrained)
|
|
alldrained = FALSE;
|
|
}
|
|
|
|
beach:
|
|
GST_DEBUG ("group %p (last_group:%d, drained:%d, switched:%d, handled:%d)",
|
|
group, *last_group, alldrained, *switched, handled);
|
|
*drained = alldrained;
|
|
return handled;
|
|
}
|
|
|
|
static gboolean
|
|
drain_and_switch_chains (GstDecodeChain * chain, GstDecodePad * drainpad,
|
|
gboolean * last_group, gboolean * drained, gboolean * switched)
|
|
{
|
|
gboolean handled = FALSE;
|
|
GstDecodeBin *dbin = chain->dbin;
|
|
|
|
GST_DEBUG ("Checking chain %p (target pad %s:%s)",
|
|
chain, GST_DEBUG_PAD_NAME (drainpad));
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
|
|
if (chain->endpad) {
|
|
/* Check if we're reached the target endchain */
|
|
if (chain == drainpad->chain) {
|
|
GST_DEBUG ("Found the target chain");
|
|
drainpad->drained = TRUE;
|
|
handled = TRUE;
|
|
}
|
|
|
|
*drained = chain->endpad->drained;
|
|
goto beach;
|
|
}
|
|
|
|
/* We known there are groups to switch to */
|
|
if (chain->next_groups)
|
|
*last_group = FALSE;
|
|
|
|
/* Check the active group */
|
|
if (chain->active_group) {
|
|
gboolean subdrained = FALSE;
|
|
handled = drain_and_switch_group (chain->active_group, drainpad,
|
|
last_group, &subdrained, switched);
|
|
|
|
/* The group is drained, see if we can switch to another */
|
|
if (handled && subdrained && !*switched) {
|
|
if (chain->next_groups) {
|
|
/* Switch to next group */
|
|
GST_DEBUG_OBJECT (dbin, "Hiding current group %p", chain->active_group);
|
|
gst_decode_group_hide (chain->active_group);
|
|
chain->old_groups =
|
|
g_list_prepend (chain->old_groups, chain->active_group);
|
|
GST_DEBUG_OBJECT (dbin, "Switching to next group %p",
|
|
chain->next_groups->data);
|
|
chain->active_group = chain->next_groups->data;
|
|
chain->next_groups =
|
|
g_list_delete_link (chain->next_groups, chain->next_groups);
|
|
*switched = TRUE;
|
|
*drained = FALSE;
|
|
} else {
|
|
GST_DEBUG ("Group %p was the last in chain %p", chain->active_group,
|
|
chain);
|
|
*drained = TRUE;
|
|
/* We're drained ! */
|
|
}
|
|
}
|
|
}
|
|
|
|
beach:
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
|
|
GST_DEBUG ("Chain %p (handled:%d, last_group:%d, drained:%d, switched:%d)",
|
|
chain, handled, *last_group, *drained, *switched);
|
|
|
|
return handled;
|
|
}
|
|
|
|
/* check if the group is drained, meaning all pads have seen an EOS
|
|
* event. */
|
|
static gboolean
|
|
gst_decode_pad_handle_eos (GstDecodePad * pad)
|
|
{
|
|
gboolean last_group = TRUE;
|
|
gboolean switched = FALSE;
|
|
gboolean drained = FALSE;
|
|
GstDecodeChain *chain = pad->chain;
|
|
GstDecodeBin *dbin = chain->dbin;
|
|
|
|
GST_LOG_OBJECT (dbin, "pad %p", pad);
|
|
drain_and_switch_chains (dbin->decode_chain, pad, &last_group, &drained,
|
|
&switched);
|
|
|
|
if (switched) {
|
|
/* If we resulted in a group switch, expose what's needed */
|
|
EXPOSE_LOCK (dbin);
|
|
if (gst_decode_chain_is_complete (dbin->decode_chain))
|
|
gst_decode_bin_expose (dbin);
|
|
EXPOSE_UNLOCK (dbin);
|
|
}
|
|
|
|
return last_group;
|
|
}
|
|
|
|
/* gst_decode_group_is_drained:
|
|
*
|
|
* Check is this group is drained and cache this result.
|
|
* The group is drained if all child chains are drained.
|
|
*
|
|
* Not MT-safe, call with group->parent's lock */
|
|
static gboolean
|
|
gst_decode_group_is_drained (GstDecodeGroup * group)
|
|
{
|
|
GList *l;
|
|
gboolean drained = TRUE;
|
|
|
|
if (group->drained) {
|
|
drained = TRUE;
|
|
goto out;
|
|
}
|
|
|
|
for (l = group->children; l; l = l->next) {
|
|
GstDecodeChain *chain = l->data;
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
if (!gst_decode_chain_is_drained (chain))
|
|
drained = FALSE;
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
if (!drained)
|
|
goto out;
|
|
}
|
|
group->drained = drained;
|
|
|
|
out:
|
|
GST_DEBUG_OBJECT (group->dbin, "Group %p is drained: %d", group, drained);
|
|
return drained;
|
|
}
|
|
|
|
/* gst_decode_chain_is_drained:
|
|
*
|
|
* Check is the chain is drained, which means that
|
|
* either
|
|
*
|
|
* a) it's endpad is drained
|
|
* b) there are no pending pads, the active group is drained
|
|
* and there are no next groups
|
|
*
|
|
* Not MT-safe, call with chain lock
|
|
*/
|
|
static gboolean
|
|
gst_decode_chain_is_drained (GstDecodeChain * chain)
|
|
{
|
|
gboolean drained = FALSE;
|
|
|
|
if (chain->endpad) {
|
|
drained = chain->endpad->drained;
|
|
goto out;
|
|
}
|
|
|
|
if (chain->pending_pads) {
|
|
drained = FALSE;
|
|
goto out;
|
|
}
|
|
|
|
if (chain->active_group && gst_decode_group_is_drained (chain->active_group)
|
|
&& !chain->next_groups) {
|
|
drained = TRUE;
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
GST_DEBUG_OBJECT (chain->dbin, "Chain %p is drained: %d", chain, drained);
|
|
return drained;
|
|
}
|
|
|
|
/* sort_end_pads:
|
|
* GCompareFunc to use with lists of GstPad.
|
|
* Sorts pads by mime type.
|
|
* First video (raw, then non-raw), then audio (raw, then non-raw),
|
|
* then others.
|
|
*
|
|
* Return: negative if a<b, 0 if a==b, positive if a>b
|
|
*/
|
|
static gint
|
|
sort_end_pads (GstDecodePad * da, GstDecodePad * db)
|
|
{
|
|
gint va, vb;
|
|
GstCaps *capsa, *capsb;
|
|
GstStructure *sa, *sb;
|
|
const gchar *namea, *nameb;
|
|
|
|
capsa = get_pad_caps (GST_PAD_CAST (da));
|
|
capsb = get_pad_caps (GST_PAD_CAST (db));
|
|
|
|
sa = gst_caps_get_structure ((const GstCaps *) capsa, 0);
|
|
sb = gst_caps_get_structure ((const GstCaps *) capsb, 0);
|
|
|
|
namea = gst_structure_get_name (sa);
|
|
nameb = gst_structure_get_name (sb);
|
|
|
|
if (g_strrstr (namea, "video/x-raw"))
|
|
va = 0;
|
|
else if (g_strrstr (namea, "video/"))
|
|
va = 1;
|
|
else if (g_strrstr (namea, "audio/x-raw"))
|
|
va = 2;
|
|
else if (g_strrstr (namea, "audio/"))
|
|
va = 3;
|
|
else
|
|
va = 4;
|
|
|
|
if (g_strrstr (nameb, "video/x-raw"))
|
|
vb = 0;
|
|
else if (g_strrstr (nameb, "video/"))
|
|
vb = 1;
|
|
else if (g_strrstr (nameb, "audio/x-raw"))
|
|
vb = 2;
|
|
else if (g_strrstr (nameb, "audio/"))
|
|
vb = 3;
|
|
else
|
|
vb = 4;
|
|
|
|
gst_caps_unref (capsa);
|
|
gst_caps_unref (capsb);
|
|
|
|
return va - vb;
|
|
}
|
|
|
|
static GstCaps *
|
|
_gst_element_get_linked_caps (GstElement * src, GstElement * sink)
|
|
{
|
|
GstIterator *it;
|
|
GstElement *parent;
|
|
GstPad *pad, *peer;
|
|
gboolean done = FALSE;
|
|
GstCaps *caps = NULL;
|
|
GValue item = { 0, };
|
|
|
|
it = gst_element_iterate_src_pads (src);
|
|
while (!done) {
|
|
switch (gst_iterator_next (it, &item)) {
|
|
case GST_ITERATOR_OK:
|
|
pad = g_value_get_object (&item);
|
|
peer = gst_pad_get_peer (pad);
|
|
if (peer) {
|
|
parent = gst_pad_get_parent_element (peer);
|
|
if (parent == sink) {
|
|
caps = gst_pad_get_current_caps (pad);
|
|
done = TRUE;
|
|
}
|
|
|
|
if (parent)
|
|
gst_object_unref (parent);
|
|
gst_object_unref (peer);
|
|
}
|
|
g_value_reset (&item);
|
|
break;
|
|
case GST_ITERATOR_RESYNC:
|
|
gst_iterator_resync (it);
|
|
break;
|
|
case GST_ITERATOR_ERROR:
|
|
case GST_ITERATOR_DONE:
|
|
done = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
g_value_unset (&item);
|
|
gst_iterator_free (it);
|
|
|
|
return caps;
|
|
}
|
|
|
|
static GQuark topology_structure_name = 0;
|
|
static GQuark topology_caps = 0;
|
|
static GQuark topology_next = 0;
|
|
static GQuark topology_pad = 0;
|
|
|
|
/* FIXME: Invent gst_structure_take_structure() to prevent all the
|
|
* structure copying for nothing
|
|
*/
|
|
static GstStructure *
|
|
gst_decode_chain_get_topology (GstDecodeChain * chain)
|
|
{
|
|
GstStructure *s, *u;
|
|
GList *l;
|
|
GstCaps *caps;
|
|
|
|
if (G_UNLIKELY ((chain->endpad || chain->deadend)
|
|
&& (chain->endcaps == NULL))) {
|
|
GST_WARNING ("End chain without valid caps !");
|
|
return NULL;
|
|
}
|
|
|
|
u = gst_structure_id_empty_new (topology_structure_name);
|
|
|
|
/* Now at the last element */
|
|
if (chain->elements && (chain->endpad || chain->deadend)) {
|
|
s = gst_structure_id_empty_new (topology_structure_name);
|
|
gst_structure_id_set (u, topology_caps, GST_TYPE_CAPS, chain->endcaps,
|
|
NULL);
|
|
|
|
if (chain->endpad)
|
|
gst_structure_id_set (u, topology_pad, GST_TYPE_PAD, chain->endpad, NULL);
|
|
gst_structure_id_set (s, topology_next, GST_TYPE_STRUCTURE, u, NULL);
|
|
gst_structure_free (u);
|
|
u = s;
|
|
} else if (chain->active_group) {
|
|
GValue list = { 0, };
|
|
GValue item = { 0, };
|
|
|
|
g_value_init (&list, GST_TYPE_LIST);
|
|
g_value_init (&item, GST_TYPE_STRUCTURE);
|
|
for (l = chain->active_group->children; l; l = l->next) {
|
|
s = gst_decode_chain_get_topology (l->data);
|
|
if (s) {
|
|
gst_value_set_structure (&item, s);
|
|
gst_value_list_append_value (&list, &item);
|
|
g_value_reset (&item);
|
|
gst_structure_free (s);
|
|
}
|
|
}
|
|
gst_structure_id_set_value (u, topology_next, &list);
|
|
g_value_unset (&list);
|
|
g_value_unset (&item);
|
|
}
|
|
|
|
/* Get caps between all elements in this chain */
|
|
l = (chain->elements && chain->elements->next) ? chain->elements : NULL;
|
|
for (; l && l->next; l = l->next) {
|
|
GstDecodeElement *delem, *delem_next;
|
|
GstElement *elem, *elem_next;
|
|
GstCaps *caps;
|
|
|
|
delem = l->data;
|
|
elem = delem->element;
|
|
delem_next = l->next->data;
|
|
elem_next = delem_next->element;
|
|
|
|
caps = _gst_element_get_linked_caps (elem_next, elem);
|
|
|
|
if (caps) {
|
|
s = gst_structure_id_empty_new (topology_structure_name);
|
|
gst_structure_id_set (u, topology_caps, GST_TYPE_CAPS, caps, NULL);
|
|
gst_caps_unref (caps);
|
|
|
|
gst_structure_id_set (s, topology_next, GST_TYPE_STRUCTURE, u, NULL);
|
|
gst_structure_free (u);
|
|
u = s;
|
|
}
|
|
}
|
|
|
|
/* Caps that resulted in this chain */
|
|
caps = gst_pad_get_current_caps (chain->pad);
|
|
if (!caps) {
|
|
caps = get_pad_caps (chain->pad);
|
|
if (G_UNLIKELY (!gst_caps_is_fixed (caps))) {
|
|
GST_ERROR_OBJECT (chain->pad,
|
|
"Couldn't get fixed caps, got %" GST_PTR_FORMAT, caps);
|
|
gst_caps_unref (caps);
|
|
caps = NULL;
|
|
}
|
|
}
|
|
gst_structure_set (u, "caps", GST_TYPE_CAPS, caps, NULL);
|
|
gst_caps_unref (caps);
|
|
|
|
return u;
|
|
}
|
|
|
|
static void
|
|
gst_decode_bin_post_topology_message (GstDecodeBin * dbin)
|
|
{
|
|
GstStructure *s;
|
|
GstMessage *msg;
|
|
|
|
s = gst_decode_chain_get_topology (dbin->decode_chain);
|
|
|
|
msg = gst_message_new_element (GST_OBJECT (dbin), s);
|
|
gst_element_post_message (GST_ELEMENT (dbin), msg);
|
|
}
|
|
|
|
/* Must only be called if the toplevel chain is complete and blocked! */
|
|
/* Not MT-safe, call with decodebin expose lock! */
|
|
static gboolean
|
|
gst_decode_bin_expose (GstDecodeBin * dbin)
|
|
{
|
|
GList *tmp, *endpads = NULL;
|
|
gboolean missing_plugin = FALSE;
|
|
gboolean already_exposed = TRUE;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Exposing currently active chains/groups");
|
|
|
|
/* Don't expose if we're currently shutting down */
|
|
DYN_LOCK (dbin);
|
|
if (G_UNLIKELY (dbin->shutdown == TRUE)) {
|
|
GST_WARNING_OBJECT (dbin, "Currently, shutting down, aborting exposing");
|
|
DYN_UNLOCK (dbin);
|
|
return FALSE;
|
|
}
|
|
DYN_UNLOCK (dbin);
|
|
|
|
/* Get the pads that we're going to expose and mark things as exposed */
|
|
if (!gst_decode_chain_expose (dbin->decode_chain, &endpads, &missing_plugin)) {
|
|
g_list_foreach (endpads, (GFunc) gst_object_unref, NULL);
|
|
g_list_free (endpads);
|
|
GST_ERROR_OBJECT (dbin, "Broken chain/group tree");
|
|
g_return_val_if_reached (FALSE);
|
|
return FALSE;
|
|
}
|
|
if (endpads == NULL) {
|
|
if (missing_plugin) {
|
|
GST_WARNING_OBJECT (dbin, "No suitable plugins found");
|
|
GST_ELEMENT_ERROR (dbin, CORE, MISSING_PLUGIN, (NULL),
|
|
("no suitable plugins found"));
|
|
} else {
|
|
/* in this case, the stream ended without buffers,
|
|
* just post a warning */
|
|
GST_WARNING_OBJECT (dbin, "All streams finished without buffers");
|
|
GST_ELEMENT_ERROR (dbin, STREAM, FAILED, (NULL),
|
|
("all streams without buffers"));
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
/* Check if this was called when everything was exposed already */
|
|
for (tmp = endpads; tmp && already_exposed; tmp = tmp->next) {
|
|
GstDecodePad *dpad = tmp->data;
|
|
|
|
already_exposed &= dpad->exposed;
|
|
if (!already_exposed)
|
|
break;
|
|
}
|
|
if (already_exposed) {
|
|
GST_DEBUG_OBJECT (dbin, "Everything was exposed already!");
|
|
g_list_foreach (endpads, (GFunc) gst_object_unref, NULL);
|
|
g_list_free (endpads);
|
|
return TRUE;
|
|
}
|
|
|
|
/* Set all already exposed pads to blocked */
|
|
for (tmp = endpads; tmp; tmp = tmp->next) {
|
|
GstDecodePad *dpad = tmp->data;
|
|
|
|
if (dpad->exposed) {
|
|
GST_DEBUG_OBJECT (dpad, "blocking exposed pad");
|
|
gst_decode_pad_set_blocked (dpad, TRUE);
|
|
}
|
|
}
|
|
|
|
/* re-order pads : video, then audio, then others */
|
|
endpads = g_list_sort (endpads, (GCompareFunc) sort_end_pads);
|
|
|
|
/* Expose pads */
|
|
for (tmp = endpads; tmp; tmp = tmp->next) {
|
|
GstDecodePad *dpad = (GstDecodePad *) tmp->data;
|
|
gchar *padname;
|
|
|
|
/* 1. rewrite name */
|
|
padname = g_strdup_printf ("src%d", dbin->nbpads);
|
|
dbin->nbpads++;
|
|
GST_DEBUG_OBJECT (dbin, "About to expose dpad %s as %s",
|
|
GST_OBJECT_NAME (dpad), padname);
|
|
gst_object_set_name (GST_OBJECT (dpad), padname);
|
|
g_free (padname);
|
|
|
|
/* 2. activate and add */
|
|
if (!dpad->exposed
|
|
&& !gst_element_add_pad (GST_ELEMENT (dbin), GST_PAD_CAST (dpad))) {
|
|
/* not really fatal, we can try to add the other pads */
|
|
g_warning ("error adding pad to decodebin");
|
|
continue;
|
|
}
|
|
dpad->exposed = TRUE;
|
|
|
|
/* 3. emit signal */
|
|
GST_INFO_OBJECT (dpad, "added new decoded pad");
|
|
}
|
|
|
|
/* 4. Signal no-more-pads. This allows the application to hook stuff to the
|
|
* exposed pads */
|
|
GST_LOG_OBJECT (dbin, "signalling no-more-pads");
|
|
gst_element_no_more_pads (GST_ELEMENT (dbin));
|
|
|
|
/* 5. Send a custom element message with the stream topology */
|
|
if (dbin->post_stream_topology)
|
|
gst_decode_bin_post_topology_message (dbin);
|
|
|
|
/* 6. Unblock internal pads. The application should have connected stuff now
|
|
* so that streaming can continue. */
|
|
for (tmp = endpads; tmp; tmp = tmp->next) {
|
|
GstDecodePad *dpad = (GstDecodePad *) tmp->data;
|
|
|
|
GST_DEBUG_OBJECT (dpad, "unblocking");
|
|
gst_decode_pad_unblock (dpad);
|
|
GST_DEBUG_OBJECT (dpad, "unblocked");
|
|
gst_object_unref (dpad);
|
|
}
|
|
g_list_free (endpads);
|
|
|
|
do_async_done (dbin);
|
|
GST_DEBUG_OBJECT (dbin, "Exposed everything");
|
|
return TRUE;
|
|
}
|
|
|
|
/* gst_decode_chain_expose:
|
|
*
|
|
* Check if the chain can be exposed and add all endpads
|
|
* to the endpads list.
|
|
*
|
|
* Also update the active group's multiqueue to the
|
|
* runtime limits.
|
|
*
|
|
* Not MT-safe, call with decodebin expose lock! *
|
|
*/
|
|
static gboolean
|
|
gst_decode_chain_expose (GstDecodeChain * chain, GList ** endpads,
|
|
gboolean * missing_plugin)
|
|
{
|
|
GstDecodeGroup *group;
|
|
GList *l;
|
|
GstDecodeBin *dbin;
|
|
|
|
if (chain->deadend) {
|
|
if (chain->endcaps)
|
|
*missing_plugin = TRUE;
|
|
return TRUE;
|
|
}
|
|
|
|
if (chain->endpad) {
|
|
if (!chain->endpad->blocked && !chain->endpad->exposed)
|
|
return FALSE;
|
|
*endpads = g_list_prepend (*endpads, gst_object_ref (chain->endpad));
|
|
return TRUE;
|
|
}
|
|
|
|
group = chain->active_group;
|
|
if (!group)
|
|
return FALSE;
|
|
if (!group->no_more_pads && !group->overrun)
|
|
return FALSE;
|
|
|
|
dbin = group->dbin;
|
|
|
|
/* configure queues for playback */
|
|
decodebin_set_queue_size (dbin, group->multiqueue, FALSE);
|
|
|
|
/* we can now disconnect any overrun signal, which is used to expose the
|
|
* group. */
|
|
if (group->overrunsig) {
|
|
GST_LOG_OBJECT (dbin, "Disconnecting overrun");
|
|
g_signal_handler_disconnect (group->multiqueue, group->overrunsig);
|
|
group->overrunsig = 0;
|
|
}
|
|
|
|
for (l = group->children; l; l = l->next) {
|
|
GstDecodeChain *childchain = l->data;
|
|
|
|
if (!gst_decode_chain_expose (childchain, endpads, missing_plugin))
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*************************
|
|
* GstDecodePad functions
|
|
*************************/
|
|
|
|
static void
|
|
gst_decode_pad_class_init (GstDecodePadClass * klass)
|
|
{
|
|
}
|
|
|
|
static void
|
|
gst_decode_pad_init (GstDecodePad * pad)
|
|
{
|
|
pad->chain = NULL;
|
|
pad->blocked = FALSE;
|
|
pad->exposed = FALSE;
|
|
pad->drained = FALSE;
|
|
gst_object_ref_sink (pad);
|
|
}
|
|
|
|
static GstProbeReturn
|
|
source_pad_blocked_cb (GstPad * pad, GstProbeType type, gpointer type_data,
|
|
gpointer user_data)
|
|
{
|
|
GstDecodePad *dpad = user_data;
|
|
GstDecodeChain *chain;
|
|
GstDecodeBin *dbin;
|
|
|
|
chain = dpad->chain;
|
|
dbin = chain->dbin;
|
|
|
|
GST_LOG_OBJECT (dpad, "blocked: dpad->chain:%p", chain);
|
|
|
|
dpad->blocked = TRUE;
|
|
|
|
EXPOSE_LOCK (dbin);
|
|
if (gst_decode_chain_is_complete (dbin->decode_chain)) {
|
|
if (!gst_decode_bin_expose (dbin))
|
|
GST_WARNING_OBJECT (dbin, "Couldn't expose group");
|
|
}
|
|
EXPOSE_UNLOCK (dbin);
|
|
|
|
return GST_PROBE_OK;
|
|
}
|
|
|
|
static GstProbeReturn
|
|
source_pad_event_probe (GstPad * pad, GstProbeType type, gpointer type_data,
|
|
gpointer user_data)
|
|
{
|
|
GstEvent *event = type_data;
|
|
GstDecodePad *dpad = user_data;
|
|
gboolean res = TRUE;
|
|
|
|
GST_LOG_OBJECT (pad, "%s dpad:%p", GST_EVENT_TYPE_NAME (event), dpad);
|
|
|
|
if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
|
|
GST_DEBUG_OBJECT (pad, "we received EOS");
|
|
|
|
/* Check if all pads are drained.
|
|
* * If there is no next group, we will let the EOS go through.
|
|
* * If there is a next group but the current group isn't completely
|
|
* drained, we will drop the EOS event.
|
|
* * If there is a next group to expose and this was the last non-drained
|
|
* pad for that group, we will remove the ghostpad of the current group
|
|
* first, which unlinks the peer and so drops the EOS. */
|
|
res = gst_decode_pad_handle_eos (dpad);
|
|
}
|
|
if (res)
|
|
return GST_PROBE_OK;
|
|
else
|
|
return GST_PROBE_DROP;
|
|
}
|
|
|
|
static void
|
|
gst_decode_pad_set_blocked (GstDecodePad * dpad, gboolean blocked)
|
|
{
|
|
GstDecodeBin *dbin = dpad->dbin;
|
|
GstPad *opad;
|
|
|
|
DYN_LOCK (dbin);
|
|
|
|
GST_DEBUG_OBJECT (dpad, "blocking pad: %d", blocked);
|
|
|
|
opad = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (dpad));
|
|
if (!opad)
|
|
goto out;
|
|
|
|
/* do not block if shutting down.
|
|
* we do not consider/expect it blocked further below, but use other trick */
|
|
if (!blocked || !dbin->shutdown) {
|
|
if (blocked) {
|
|
if (dpad->block_id == 0)
|
|
dpad->block_id = gst_pad_add_probe (opad, GST_PROBE_TYPE_BLOCK,
|
|
source_pad_blocked_cb, gst_object_ref (dpad),
|
|
(GDestroyNotify) gst_object_unref);
|
|
} else {
|
|
if (dpad->block_id != 0) {
|
|
gst_pad_remove_probe (opad, dpad->block_id);
|
|
dpad->block_id = 0;
|
|
}
|
|
dpad->blocked = FALSE;
|
|
}
|
|
}
|
|
|
|
if (blocked) {
|
|
if (dbin->shutdown) {
|
|
/* deactivate to force flushing state to prevent NOT_LINKED errors */
|
|
gst_pad_set_active (GST_PAD_CAST (dpad), FALSE);
|
|
/* note that deactivating the target pad would have no effect here,
|
|
* since elements are typically connected first (and pads exposed),
|
|
* and only then brought to PAUSED state (so pads activated) */
|
|
} else {
|
|
gst_object_ref (dpad);
|
|
dbin->blocked_pads = g_list_prepend (dbin->blocked_pads, dpad);
|
|
}
|
|
} else {
|
|
GList *l;
|
|
|
|
if ((l = g_list_find (dbin->blocked_pads, dpad))) {
|
|
gst_object_unref (dpad);
|
|
dbin->blocked_pads = g_list_delete_link (dbin->blocked_pads, l);
|
|
}
|
|
}
|
|
gst_object_unref (opad);
|
|
out:
|
|
DYN_UNLOCK (dbin);
|
|
}
|
|
|
|
static void
|
|
gst_decode_pad_add_drained_check (GstDecodePad * dpad)
|
|
{
|
|
gst_pad_add_probe (GST_PAD_CAST (dpad), GST_PROBE_TYPE_EVENT,
|
|
source_pad_event_probe, dpad, NULL);
|
|
}
|
|
|
|
static void
|
|
gst_decode_pad_activate (GstDecodePad * dpad, GstDecodeChain * chain)
|
|
{
|
|
g_return_if_fail (chain != NULL);
|
|
|
|
dpad->chain = chain;
|
|
gst_pad_set_active (GST_PAD_CAST (dpad), TRUE);
|
|
gst_decode_pad_set_blocked (dpad, TRUE);
|
|
gst_decode_pad_add_drained_check (dpad);
|
|
}
|
|
|
|
static void
|
|
gst_decode_pad_unblock (GstDecodePad * dpad)
|
|
{
|
|
gst_decode_pad_set_blocked (dpad, FALSE);
|
|
}
|
|
|
|
/*gst_decode_pad_new:
|
|
*
|
|
* Creates a new GstDecodePad for the given pad.
|
|
*/
|
|
static GstDecodePad *
|
|
gst_decode_pad_new (GstDecodeBin * dbin, GstPad * pad, GstDecodeChain * chain)
|
|
{
|
|
GstDecodePad *dpad;
|
|
GstPadTemplate *pad_tmpl;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "making new decodepad");
|
|
pad_tmpl = gst_static_pad_template_get (&decoder_bin_src_template);
|
|
dpad =
|
|
g_object_new (GST_TYPE_DECODE_PAD, "direction", GST_PAD_DIRECTION (pad),
|
|
"template", pad_tmpl, NULL);
|
|
gst_ghost_pad_construct (GST_GHOST_PAD_CAST (dpad));
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (dpad), pad);
|
|
dpad->chain = chain;
|
|
dpad->dbin = dbin;
|
|
gst_object_unref (pad_tmpl);
|
|
|
|
return dpad;
|
|
}
|
|
|
|
static void
|
|
gst_pending_pad_free (GstPendingPad * ppad)
|
|
{
|
|
g_assert (ppad);
|
|
g_assert (ppad->pad);
|
|
|
|
if (ppad->event_probe_id != 0)
|
|
gst_pad_remove_probe (ppad->pad, ppad->event_probe_id);
|
|
gst_object_unref (ppad->pad);
|
|
g_slice_free (GstPendingPad, ppad);
|
|
}
|
|
|
|
/*****
|
|
* Element add/remove
|
|
*****/
|
|
|
|
static void
|
|
do_async_start (GstDecodeBin * dbin)
|
|
{
|
|
GstMessage *message;
|
|
|
|
dbin->async_pending = TRUE;
|
|
|
|
message = gst_message_new_async_start (GST_OBJECT_CAST (dbin));
|
|
parent_class->handle_message (GST_BIN_CAST (dbin), message);
|
|
}
|
|
|
|
static void
|
|
do_async_done (GstDecodeBin * dbin)
|
|
{
|
|
GstMessage *message;
|
|
|
|
if (dbin->async_pending) {
|
|
message = gst_message_new_async_done (GST_OBJECT_CAST (dbin), FALSE);
|
|
parent_class->handle_message (GST_BIN_CAST (dbin), message);
|
|
|
|
dbin->async_pending = FALSE;
|
|
}
|
|
}
|
|
|
|
/*****
|
|
* convenience functions
|
|
*****/
|
|
|
|
/* find_sink_pad
|
|
*
|
|
* Returns the first sink pad of the given element, or NULL if it doesn't have
|
|
* any.
|
|
*/
|
|
|
|
static GstPad *
|
|
find_sink_pad (GstElement * element)
|
|
{
|
|
GstIterator *it;
|
|
GstPad *pad = NULL;
|
|
GValue item = { 0, };
|
|
|
|
it = gst_element_iterate_sink_pads (element);
|
|
|
|
if ((gst_iterator_next (it, &item)) == GST_ITERATOR_OK)
|
|
pad = g_value_dup_object (&item);
|
|
g_value_unset (&item);
|
|
gst_iterator_free (it);
|
|
|
|
return pad;
|
|
}
|
|
|
|
/* call with dyn_lock held */
|
|
static void
|
|
unblock_pads (GstDecodeBin * dbin)
|
|
{
|
|
GList *tmp;
|
|
|
|
GST_LOG_OBJECT (dbin, "unblocking pads");
|
|
|
|
for (tmp = dbin->blocked_pads; tmp; tmp = tmp->next) {
|
|
GstDecodePad *dpad = (GstDecodePad *) tmp->data;
|
|
GstPad *opad;
|
|
|
|
opad = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (dpad));
|
|
if (!opad)
|
|
continue;
|
|
|
|
GST_DEBUG_OBJECT (dpad, "unblocking");
|
|
if (dpad->block_id != 0) {
|
|
gst_pad_remove_probe (opad, dpad->block_id);
|
|
dpad->block_id = 0;
|
|
}
|
|
dpad->blocked = FALSE;
|
|
/* make flushing, prevent NOT_LINKED */
|
|
GST_PAD_SET_FLUSHING (GST_PAD_CAST (dpad));
|
|
gst_object_unref (dpad);
|
|
gst_object_unref (opad);
|
|
GST_DEBUG_OBJECT (dpad, "unblocked");
|
|
}
|
|
|
|
/* clear, no more blocked pads */
|
|
g_list_free (dbin->blocked_pads);
|
|
dbin->blocked_pads = NULL;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_decode_bin_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
|
GstDecodeBin *dbin = GST_DECODE_BIN (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
if (dbin->typefind == NULL)
|
|
goto missing_typefind;
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
/* Make sure we've cleared all existing chains */
|
|
if (dbin->decode_chain) {
|
|
gst_decode_chain_free (dbin->decode_chain);
|
|
dbin->decode_chain = NULL;
|
|
}
|
|
DYN_LOCK (dbin);
|
|
GST_LOG_OBJECT (dbin, "clearing shutdown flag");
|
|
dbin->shutdown = FALSE;
|
|
DYN_UNLOCK (dbin);
|
|
dbin->have_type = FALSE;
|
|
ret = GST_STATE_CHANGE_ASYNC;
|
|
do_async_start (dbin);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
DYN_LOCK (dbin);
|
|
GST_LOG_OBJECT (dbin, "setting shutdown flag");
|
|
dbin->shutdown = TRUE;
|
|
unblock_pads (dbin);
|
|
DYN_UNLOCK (dbin);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
{
|
|
GstStateChangeReturn bret;
|
|
|
|
bret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
if (G_UNLIKELY (bret == GST_STATE_CHANGE_FAILURE))
|
|
goto activate_failed;
|
|
else if (G_UNLIKELY (bret == GST_STATE_CHANGE_NO_PREROLL)) {
|
|
do_async_done (dbin);
|
|
ret = bret;
|
|
}
|
|
}
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
do_async_done (dbin);
|
|
if (dbin->decode_chain) {
|
|
gst_decode_chain_free (dbin->decode_chain);
|
|
dbin->decode_chain = NULL;
|
|
}
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
missing_typefind:
|
|
{
|
|
gst_element_post_message (element,
|
|
gst_missing_element_message_new (element, "typefind"));
|
|
GST_ELEMENT_ERROR (dbin, CORE, MISSING_PLUGIN, (NULL), ("no typefind!"));
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
activate_failed:
|
|
{
|
|
GST_DEBUG_OBJECT (element,
|
|
"element failed to change states -- activation problem?");
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_decode_bin_plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_decode_bin_debug, "decodebin", 0, "decoder bin");
|
|
|
|
/* Register some quarks here for the stream topology message */
|
|
topology_structure_name = g_quark_from_static_string ("stream-topology");
|
|
topology_caps = g_quark_from_static_string ("caps");
|
|
topology_next = g_quark_from_static_string ("next");
|
|
topology_pad = g_quark_from_static_string ("pad");
|
|
|
|
return gst_element_register (plugin, "decodebin", GST_RANK_NONE,
|
|
GST_TYPE_DECODE_BIN);
|
|
}
|