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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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80a8702de2
With the new addition of handling unknown sream types we *could* end up with a chain which doesn't have a current_pad (it's an intermediary one) Fixes #1287 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2827>
4423 lines
137 KiB
C
4423 lines
137 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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* Copyright (C) <2013> Collabora Ltd.
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* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
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* Copyright (C) <2015-2016> Centricular Ltd
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* @author: Edward Hervey <edward@centricular.com>
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* @author: Jan Schmidt <jan@centricular.com>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-parsebin
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* @title: parsebin
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*
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* #GstBin that auto-magically constructs a parsing pipeline
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* using available parsers and demuxers via auto-plugging.
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*
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* parsebin unpacks the contents of the input stream to the
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* level of parsed elementary streams, but unlike decodebin
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* it doesn't connect decoder elements. The output pads
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* produce packetised encoded data with timestamps where possible,
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* or send missing-element messages where not.
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*
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* > parsebin is still experimental API and a technology preview.
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* > Its behaviour and exposed API is subject to change.
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*/
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/* Implementation notes:
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*
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* The following section describes how ParseBin works internally.
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*
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* The first part of ParseBin 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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* ParseBin internally organizes the elements it autoplugged into
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* GstParseChains and GstParseGroups. A parse chain is a single chain
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* of parsing, this
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* means that if ParseBin ever 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 parse groups below the chain. Otherwise,
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* if an element has a single srcpad that outputs raw data the parse chain
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* is ended too and a GstParsePad is stored and blocked.
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*
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* A parse group combines a number of chains that are created by a
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* demuxer element.
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*
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* This continues until the top-level parse chain is complete. A parse
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* chain is complete if it either ends with a blocked elementary stream,
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* if autoplugging stopped because no suitable plugins could be found
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* or if the active group is complete. A parse group on the other hand
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* is complete if all child chains are complete.
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*
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* If this happens at some point, all end pads of all active groups are exposed.
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* For this ParseBin adds the end pads, and then unblocks them. Now playback starts.
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*
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* If one of the chains that end on a endpad receives EOS ParseBin 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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/* FIXME 0.11: suppress warnings for deprecated API such as GValueArray
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* with newer GLib versions (>= 2.31.0) */
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#define GLIB_DISABLE_DEPRECATION_WARNINGS
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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-enum.h"
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#include "gstplaybackelements.h"
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#include "gstplaybackutils.h"
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#include "gstrawcaps.h"
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/* generic templates */
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static GstStaticPadTemplate parse_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 parse_bin_src_template =
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GST_STATIC_PAD_TEMPLATE ("src_%u",
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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_parse_bin_debug);
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#define GST_CAT_DEFAULT gst_parse_bin_debug
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typedef struct _GstPendingPad GstPendingPad;
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typedef struct _GstParseElement GstParseElement;
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typedef struct _GstParseChain GstParseChain;
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typedef struct _GstParseGroup GstParseGroup;
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typedef struct _GstParsePad GstParsePad;
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typedef GstGhostPadClass GstParsePadClass;
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typedef struct _GstParseBin GstParseBin;
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typedef struct _GstParseBinClass GstParseBinClass;
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#define GST_TYPE_PARSE_BIN (gst_parse_bin_get_type())
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#define GST_PARSE_BIN_CAST(obj) ((GstParseBin*)(obj))
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#define GST_PARSE_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PARSE_BIN,GstParseBin))
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#define GST_PARSE_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PARSE_BIN,GstParseBinClass))
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#define GST_IS_parse_bin(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PARSE_BIN))
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#define GST_IS_parse_bin_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PARSE_BIN))
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/**
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* GstParseBin:
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*
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* The opaque #GstParseBin data structure
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*/
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struct _GstParseBin
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{
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GstBin bin; /* we extend GstBin */
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/* properties */
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gchar *encoding; /* encoding of subtitles */
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guint64 connection_speed;
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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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GstParseChain *parse_chain; /* Top level parse chain */
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guint 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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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 unknown type streams or not */
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GList *filtered; /* elements for which error messages are filtered */
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GList *filtered_errors; /* filtered error messages */
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GMutex cleanup_lock; /* Mutex used to protect the cleanup thread */
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GThread *cleanup_thread; /* thread used to free chains asynchronously.
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* We store it to make sure we end up joining it
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* before stopping the element.
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* Protected by the object lock */
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};
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struct _GstParseBinClass
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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 parse */
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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 parse 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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/* signal fired when a autoplugged element that is not linked downstream
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* or exposed wants to query something */
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gboolean (*autoplug_query) (GstElement * element, GstPad * pad,
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GstQuery * query);
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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_AUTOPLUG_QUERY,
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SIGNAL_DRAINED,
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LAST_SIGNAL
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};
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#define DEFAULT_SUBTITLE_ENCODING NULL
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/* by default we use the automatic values above */
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#define DEFAULT_EXPOSE_ALL_STREAMS TRUE
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#define DEFAULT_CONNECTION_SPEED 0
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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_SUBTITLE_ENCODING,
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PROP_SINK_CAPS,
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PROP_EXPOSE_ALL_STREAMS,
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PROP_CONNECTION_SPEED
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};
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static GstBinClass *parent_class;
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static guint gst_parse_bin_signals[LAST_SIGNAL] = { 0 };
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static void type_found (GstElement * typefind, guint probability,
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GstCaps * caps, GstParseBin * parse_bin);
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static gboolean gst_parse_bin_autoplug_continue (GstElement * element,
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GstPad * pad, GstCaps * caps);
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static GValueArray *gst_parse_bin_autoplug_factories (GstElement *
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element, GstPad * pad, GstCaps * caps);
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static GValueArray *gst_parse_bin_autoplug_sort (GstElement * element,
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GstPad * pad, GstCaps * caps, GValueArray * factories);
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static GstAutoplugSelectResult gst_parse_bin_autoplug_select (GstElement *
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element, GstPad * pad, GstCaps * caps, GstElementFactory * factory);
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static gboolean gst_parse_bin_autoplug_query (GstElement * element,
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GstPad * pad, GstQuery * query);
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static void gst_parse_bin_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_parse_bin_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void caps_notify_cb (GstPad * pad, GParamSpec * unused,
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GstParseChain * chain);
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static GstStateChangeReturn gst_parse_bin_change_state (GstElement * element,
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GstStateChange transition);
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static void gst_parse_bin_handle_message (GstBin * bin, GstMessage * message);
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static void gst_parse_pad_update_caps (GstParsePad * parsepad, GstCaps * caps);
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static void gst_parse_pad_update_tags (GstParsePad * parsepad,
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GstTagList * tags);
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static GstEvent *gst_parse_pad_stream_start_event (GstParsePad * parsepad,
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GstEvent * event);
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static void gst_parse_pad_update_stream_collection (GstParsePad * parsepad,
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GstStreamCollection * collection);
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static GstCaps *get_pad_caps (GstPad * pad);
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static GstStreamType guess_stream_type_from_caps (GstCaps * caps);
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#define EXPOSE_LOCK(parsebin) G_STMT_START { \
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GST_LOG_OBJECT (parsebin, \
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"expose locking from thread %p", \
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g_thread_self ()); \
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g_mutex_lock (&GST_PARSE_BIN_CAST(parsebin)->expose_lock); \
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GST_LOG_OBJECT (parsebin, \
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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(parsebin) G_STMT_START { \
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GST_LOG_OBJECT (parsebin, \
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"expose unlocking from thread %p", \
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g_thread_self ()); \
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g_mutex_unlock (&GST_PARSE_BIN_CAST(parsebin)->expose_lock); \
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} G_STMT_END
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#define DYN_LOCK(parsebin) G_STMT_START { \
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GST_LOG_OBJECT (parsebin, \
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"dynlocking from thread %p", \
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g_thread_self ()); \
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g_mutex_lock (&GST_PARSE_BIN_CAST(parsebin)->dyn_lock); \
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GST_LOG_OBJECT (parsebin, \
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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(parsebin) G_STMT_START { \
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GST_LOG_OBJECT (parsebin, \
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"dynunlocking from thread %p", \
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g_thread_self ()); \
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g_mutex_unlock (&GST_PARSE_BIN_CAST(parsebin)->dyn_lock); \
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} G_STMT_END
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#define SUBTITLE_LOCK(parsebin) G_STMT_START { \
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GST_LOG_OBJECT (parsebin, \
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"subtitle locking from thread %p", \
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g_thread_self ()); \
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g_mutex_lock (&GST_PARSE_BIN_CAST(parsebin)->subtitle_lock); \
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GST_LOG_OBJECT (parsebin, \
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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(parsebin) G_STMT_START { \
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GST_LOG_OBJECT (parsebin, \
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"subtitle unlocking from thread %p", \
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g_thread_self ()); \
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g_mutex_unlock (&GST_PARSE_BIN_CAST(parsebin)->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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GstParseChain *chain;
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gulong event_probe_id;
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gulong notify_caps_id;
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};
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struct _GstParseElement
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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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gulong pad_added_id;
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gulong pad_removed_id;
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gulong no_more_pads_id;
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};
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/* GstParseGroup
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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 _GstParseGroup
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{
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GstParseBin *parsebin;
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GstParseChain *parent;
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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 GstParseChains in this group */
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};
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struct _GstParseChain
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{
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GstParseGroup *parent;
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GstParseBin *parsebin;
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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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GstCaps *start_caps; /* The initial caps of this chain */
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gboolean drained; /* TRUE if the all children are drained */
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gboolean demuxer; /* TRUE if elements->data is a demuxer */
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gboolean parsed; /* TRUE if any elements are a parser */
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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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GstParseGroup *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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GstParsePad *current_pad; /* Current ending pad of the chain that can't
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* be exposed yet but would be the same as endpad
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* once it can be exposed */
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GstParsePad *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 parser could be found
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e.g. stream got EOS without buffers
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*/
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gchar *deadend_details;
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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_parse_chain_free (GstParseChain * chain);
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static GstParseChain *gst_parse_chain_new (GstParseBin * parsebin,
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GstParseGroup * group, GstPad * pad, GstCaps * start_caps);
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static void gst_parse_group_hide (GstParseGroup * group);
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static void gst_parse_group_free (GstParseGroup * group);
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static GstParseGroup *gst_parse_group_new (GstParseBin * parsebin,
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GstParseChain * chain);
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static gboolean gst_parse_chain_is_complete (GstParseChain * chain);
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static gboolean gst_parse_chain_expose (GstParseChain * chain,
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GList ** endpads, gboolean * missing_plugin,
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GString * missing_plugin_details, gboolean * last_group,
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gboolean * uncollected_streams);
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static void build_fallback_collection (GstParseChain * chain,
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GstStreamCollection * collection);
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static gboolean gst_parse_chain_is_drained (GstParseChain * chain);
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static gboolean gst_parse_group_is_complete (GstParseGroup * group);
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static gboolean gst_parse_group_is_drained (GstParseGroup * group);
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static gboolean gst_parse_bin_expose (GstParseBin * parsebin);
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#define CHAIN_MUTEX_LOCK(chain) G_STMT_START { \
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GST_LOG_OBJECT (chain->parsebin, \
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"locking chain %p from thread %p", \
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chain, g_thread_self ()); \
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g_mutex_lock (&chain->lock); \
|
|
GST_LOG_OBJECT (chain->parsebin, \
|
|
"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->parsebin, \
|
|
"unlocking chain %p from thread %p", \
|
|
chain, g_thread_self ()); \
|
|
g_mutex_unlock (&chain->lock); \
|
|
} G_STMT_END
|
|
|
|
/* GstParsePad
|
|
*
|
|
* GstPad private used for source pads of chains
|
|
*/
|
|
struct _GstParsePad
|
|
{
|
|
GstGhostPad parent;
|
|
GstParseBin *parsebin;
|
|
GstParseChain *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;
|
|
|
|
gboolean in_a_fallback_collection;
|
|
GstStreamCollection *active_collection;
|
|
GstStream *active_stream;
|
|
};
|
|
|
|
GType gst_parse_pad_get_type (void);
|
|
G_DEFINE_TYPE (GstParsePad, gst_parse_pad, GST_TYPE_GHOST_PAD);
|
|
#define GST_TYPE_PARSE_PAD (gst_parse_pad_get_type ())
|
|
#define GST_PARSE_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PARSE_PAD,GstParsePad))
|
|
|
|
static GstParsePad *gst_parse_pad_new (GstParseBin * parsebin,
|
|
GstParseChain * chain);
|
|
static void gst_parse_pad_activate (GstParsePad * parsepad,
|
|
GstParseChain * chain);
|
|
static void gst_parse_pad_unblock (GstParsePad * parsepad);
|
|
static void gst_parse_pad_set_blocked (GstParsePad * parsepad,
|
|
gboolean blocked);
|
|
static gboolean gst_parse_pad_query (GstPad * pad, GstObject * parent,
|
|
GstQuery * query);
|
|
static GstPadProbeReturn
|
|
gst_parse_pad_event (GstPad * pad, GstPadProbeInfo * info, gpointer user_data);
|
|
|
|
|
|
static void gst_pending_pad_free (GstPendingPad * ppad);
|
|
static GstPadProbeReturn pad_event_cb (GstPad * pad, GstPadProbeInfo * info,
|
|
gpointer data);
|
|
|
|
/********************************
|
|
* Standard GObject boilerplate *
|
|
********************************/
|
|
|
|
static void gst_parse_bin_dispose (GObject * object);
|
|
static void gst_parse_bin_finalize (GObject * object);
|
|
static GType gst_parse_bin_get_type (void);
|
|
|
|
G_DEFINE_TYPE (GstParseBin, gst_parse_bin, GST_TYPE_BIN);
|
|
#define _do_init \
|
|
GST_DEBUG_CATEGORY_INIT (gst_parse_bin_debug, "parsebin", 0, "parser bin");\
|
|
playback_element_init (plugin);
|
|
GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (parsebin, "parsebin", GST_RANK_NONE,
|
|
GST_TYPE_PARSE_BIN, _do_init);
|
|
|
|
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);
|
|
g_value_set_boolean (return_accu, myboolean);
|
|
|
|
/* stop emission if FALSE */
|
|
return myboolean;
|
|
}
|
|
|
|
static gboolean
|
|
_gst_boolean_or_accumulator (GSignalInvocationHint * ihint,
|
|
GValue * return_accu, const GValue * handler_return, gpointer dummy)
|
|
{
|
|
gboolean myboolean;
|
|
gboolean retboolean;
|
|
|
|
myboolean = g_value_get_boolean (handler_return);
|
|
retboolean = g_value_get_boolean (return_accu);
|
|
|
|
g_value_set_boolean (return_accu, myboolean || retboolean);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* 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);
|
|
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);
|
|
g_value_set_enum (return_accu, res);
|
|
|
|
/* Call the next handler in the chain (if any) when the current callback
|
|
* returns TRY. This makes it possible to register separate autoplug-select
|
|
* handlers that implement different TRY/EXPOSE/SKIP strategies.
|
|
*/
|
|
if (res == GST_AUTOPLUG_SELECT_TRY)
|
|
return TRUE;
|
|
|
|
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);
|
|
g_value_set_boxed (return_accu, array);
|
|
|
|
if (array != NULL)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_parse_bin_class_init (GstParseBinClass * klass)
|
|
{
|
|
GObjectClass *gobject_klass;
|
|
GstElementClass *gstelement_klass;
|
|
GstBinClass *gstbin_klass;
|
|
|
|
gobject_klass = (GObjectClass *) klass;
|
|
gstelement_klass = (GstElementClass *) klass;
|
|
gstbin_klass = (GstBinClass *) klass;
|
|
|
|
parent_class = g_type_class_peek_parent (klass);
|
|
|
|
gobject_klass->dispose = gst_parse_bin_dispose;
|
|
gobject_klass->finalize = gst_parse_bin_finalize;
|
|
gobject_klass->set_property = gst_parse_bin_set_property;
|
|
gobject_klass->get_property = gst_parse_bin_get_property;
|
|
|
|
/**
|
|
* GstParseBin::unknown-type:
|
|
* @bin: The ParseBin.
|
|
* @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
|
|
* parsing is added to the ParseBin.
|
|
*/
|
|
gst_parse_bin_signals[SIGNAL_UNKNOWN_TYPE] =
|
|
g_signal_new ("unknown-type", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstParseBinClass, unknown_type),
|
|
NULL, NULL, NULL, G_TYPE_NONE, 2, GST_TYPE_PAD, GST_TYPE_CAPS);
|
|
|
|
/**
|
|
* GstParseBin::autoplug-continue:
|
|
* @bin: The ParseBin.
|
|
* @pad: The #GstPad.
|
|
* @caps: The #GstCaps found.
|
|
*
|
|
* This signal is emitted whenever ParseBin finds a new stream. It is
|
|
* emitted before looking for any elements that can handle that stream.
|
|
*
|
|
* > Invocation of signal handlers stops after the first signal handler
|
|
* > returns %FALSE. Signal handlers are invoked in the order they were
|
|
* > connected in.
|
|
*
|
|
* Returns: %TRUE if you wish ParseBin 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_parse_bin_signals[SIGNAL_AUTOPLUG_CONTINUE] =
|
|
g_signal_new ("autoplug-continue", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstParseBinClass, autoplug_continue),
|
|
_gst_boolean_accumulator, NULL, NULL, G_TYPE_BOOLEAN, 2, GST_TYPE_PAD,
|
|
GST_TYPE_CAPS);
|
|
|
|
/**
|
|
* GstParseBin::autoplug-factories:
|
|
* @bin: The ParseBin.
|
|
* @pad: The #GstPad.
|
|
* @caps: The #GstCaps found.
|
|
*
|
|
* This function is emitted when an array of possible factories for @caps on
|
|
* @pad is needed. ParseBin 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.
|
|
*
|
|
* > 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!
|
|
*
|
|
* 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_parse_bin_signals[SIGNAL_AUTOPLUG_FACTORIES] =
|
|
g_signal_new ("autoplug-factories", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstParseBinClass,
|
|
autoplug_factories), _gst_array_accumulator, NULL,
|
|
NULL, G_TYPE_VALUE_ARRAY, 2, GST_TYPE_PAD, GST_TYPE_CAPS);
|
|
|
|
/**
|
|
* GstParseBin::autoplug-sort:
|
|
* @bin: The ParseBin.
|
|
* @pad: The #GstPad.
|
|
* @caps: The #GstCaps.
|
|
* @factories: A #GValueArray of possible #GstElementFactory to use.
|
|
*
|
|
* Once ParseBin has found the possible #GstElementFactory objects to try
|
|
* for @caps on @pad, this signal is emitted. 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.
|
|
*
|
|
* > 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!
|
|
*
|
|
* Returns: A new sorted array of #GstElementFactory objects.
|
|
*/
|
|
gst_parse_bin_signals[SIGNAL_AUTOPLUG_SORT] =
|
|
g_signal_new ("autoplug-sort", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstParseBinClass, autoplug_sort),
|
|
_gst_array_hasvalue_accumulator, NULL,
|
|
NULL, G_TYPE_VALUE_ARRAY, 3, GST_TYPE_PAD, GST_TYPE_CAPS,
|
|
G_TYPE_VALUE_ARRAY | G_SIGNAL_TYPE_STATIC_SCOPE);
|
|
|
|
/**
|
|
* GstParseBin::autoplug-select:
|
|
* @bin: The ParseBin.
|
|
* @pad: The #GstPad.
|
|
* @caps: The #GstCaps.
|
|
* @factory: A #GstElementFactory to use.
|
|
*
|
|
* This signal is emitted once ParseBin has found all the possible
|
|
* #GstElementFactory that can be used to handle the given @caps. For each of
|
|
* those factories, this signal is emitted.
|
|
*
|
|
* The signal handler should return a #GstAutoplugSelectResult enum
|
|
* value indicating what ParseBin should do next.
|
|
*
|
|
* A value of #GstAutoplugSelectResult::try will try to autoplug an element from
|
|
* @factory.
|
|
*
|
|
* A value of #GstAutoplugSelectResult::expose will expose @pad without plugging
|
|
* any element to it.
|
|
*
|
|
* A value of #GstAutoplugSelectResult::skip will skip @factory and move to the
|
|
* next factory.
|
|
*
|
|
* > The signal handler will not be invoked if any of the previously
|
|
* > registered signal handlers (if any) return a value other than
|
|
* > GST_AUTOPLUG_SELECT_TRY. Which also means that if you return
|
|
* > GST_AUTOPLUG_SELECT_TRY from one signal handler, handlers that get
|
|
* > registered next (again, if any) can override that decision.
|
|
*
|
|
* Returns: a #GstAutoplugSelectResult that indicates the required
|
|
* operation. the default handler will always return
|
|
* #GstAutoplugSelectResult::try.
|
|
*/
|
|
gst_parse_bin_signals[SIGNAL_AUTOPLUG_SELECT] =
|
|
g_signal_new ("autoplug-select", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstParseBinClass, autoplug_select),
|
|
_gst_select_accumulator, NULL, NULL, GST_TYPE_AUTOPLUG_SELECT_RESULT, 3,
|
|
GST_TYPE_PAD, GST_TYPE_CAPS, GST_TYPE_ELEMENT_FACTORY);
|
|
|
|
/**
|
|
* GstParseBin::autoplug-query:
|
|
* @bin: The ParseBin.
|
|
* @child: The child element doing the query
|
|
* @pad: The #GstPad.
|
|
* @element: The #GstElement.
|
|
* @query: The #GstQuery.
|
|
*
|
|
* This signal is emitted whenever an autoplugged element that is
|
|
* not linked downstream yet and not exposed does a query. It can
|
|
* be used to tell the element about the downstream supported caps
|
|
* for example.
|
|
*
|
|
* Returns: %TRUE if the query was handled, %FALSE otherwise.
|
|
*/
|
|
gst_parse_bin_signals[SIGNAL_AUTOPLUG_QUERY] =
|
|
g_signal_new ("autoplug-query", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstParseBinClass, autoplug_query),
|
|
_gst_boolean_or_accumulator, NULL, NULL, G_TYPE_BOOLEAN, 3, GST_TYPE_PAD,
|
|
GST_TYPE_ELEMENT, GST_TYPE_QUERY | G_SIGNAL_TYPE_STATIC_SCOPE);
|
|
|
|
/**
|
|
* GstParseBin::drained:
|
|
* @bin: The ParseBin
|
|
*
|
|
* This signal is emitted once ParseBin has finished parsing all the data.
|
|
*/
|
|
gst_parse_bin_signals[SIGNAL_DRAINED] =
|
|
g_signal_new ("drained", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstParseBinClass, drained),
|
|
NULL, NULL, NULL, G_TYPE_NONE, 0, G_TYPE_NONE);
|
|
|
|
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));
|
|
|
|
/**
|
|
* GstParseBin::expose-all-streams:
|
|
*
|
|
* Expose streams of unknown type.
|
|
*
|
|
* If set to %FALSE, then only the streams that can be parsed to the final
|
|
* caps (see 'caps' property) will have a pad exposed. Streams that do not
|
|
* match those caps but could have been parsed will not have parser plugged
|
|
* in internally and will not have a pad exposed.
|
|
*/
|
|
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));
|
|
|
|
/**
|
|
* GstParseBin2::connection-speed:
|
|
*
|
|
* Network connection speed in kbps (0 = unknownw)
|
|
*/
|
|
g_object_class_install_property (gobject_klass, PROP_CONNECTION_SPEED,
|
|
g_param_spec_uint64 ("connection-speed", "Connection Speed",
|
|
"Network connection speed in kbps (0 = unknown)",
|
|
0, G_MAXUINT64 / 1000, DEFAULT_CONNECTION_SPEED,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
klass->autoplug_continue =
|
|
GST_DEBUG_FUNCPTR (gst_parse_bin_autoplug_continue);
|
|
klass->autoplug_factories =
|
|
GST_DEBUG_FUNCPTR (gst_parse_bin_autoplug_factories);
|
|
klass->autoplug_sort = GST_DEBUG_FUNCPTR (gst_parse_bin_autoplug_sort);
|
|
klass->autoplug_select = GST_DEBUG_FUNCPTR (gst_parse_bin_autoplug_select);
|
|
klass->autoplug_query = GST_DEBUG_FUNCPTR (gst_parse_bin_autoplug_query);
|
|
|
|
gst_element_class_add_pad_template (gstelement_klass,
|
|
gst_static_pad_template_get (&parse_bin_sink_template));
|
|
gst_element_class_add_pad_template (gstelement_klass,
|
|
gst_static_pad_template_get (&parse_bin_src_template));
|
|
|
|
gst_element_class_set_static_metadata (gstelement_klass,
|
|
"Parse Bin", "Generic/Bin/Parser",
|
|
"Parse and de-multiplex to elementary stream",
|
|
"Jan Schmidt <jan@centricular.com>, "
|
|
"Edward Hervey <edward@centricular.com>");
|
|
|
|
gstelement_klass->change_state =
|
|
GST_DEBUG_FUNCPTR (gst_parse_bin_change_state);
|
|
|
|
gstbin_klass->handle_message =
|
|
GST_DEBUG_FUNCPTR (gst_parse_bin_handle_message);
|
|
|
|
g_type_class_ref (GST_TYPE_PARSE_PAD);
|
|
}
|
|
|
|
static void
|
|
gst_parse_bin_update_factories_list (GstParseBin * parsebin)
|
|
{
|
|
guint cookie;
|
|
|
|
cookie = gst_registry_get_feature_list_cookie (gst_registry_get ());
|
|
if (!parsebin->factories || parsebin->factories_cookie != cookie) {
|
|
if (parsebin->factories)
|
|
gst_plugin_feature_list_free (parsebin->factories);
|
|
parsebin->factories =
|
|
gst_element_factory_list_get_elements
|
|
(GST_ELEMENT_FACTORY_TYPE_DECODABLE, GST_RANK_MARGINAL);
|
|
parsebin->factories =
|
|
g_list_sort (parsebin->factories,
|
|
gst_playback_utils_compare_factories_func);
|
|
parsebin->factories_cookie = cookie;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_parse_bin_init (GstParseBin * parse_bin)
|
|
{
|
|
/* first filter out the interesting element factories */
|
|
g_mutex_init (&parse_bin->factories_lock);
|
|
|
|
/* we create the typefind element only once */
|
|
parse_bin->typefind = gst_element_factory_make ("typefind", "typefind");
|
|
if (!parse_bin->typefind) {
|
|
g_warning ("can't find typefind element, ParseBin will not work");
|
|
} else {
|
|
GstPad *pad;
|
|
GstPad *gpad;
|
|
GstPadTemplate *pad_tmpl;
|
|
|
|
/* add the typefind element */
|
|
if (!gst_bin_add (GST_BIN (parse_bin), parse_bin->typefind)) {
|
|
g_warning ("Could not add typefind element, ParseBin will not work");
|
|
gst_object_unref (parse_bin->typefind);
|
|
parse_bin->typefind = NULL;
|
|
}
|
|
|
|
/* get the sinkpad */
|
|
pad = gst_element_get_static_pad (parse_bin->typefind, "sink");
|
|
|
|
/* get the pad template */
|
|
pad_tmpl = gst_static_pad_template_get (&parse_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 (parse_bin), gpad);
|
|
|
|
gst_object_unref (pad_tmpl);
|
|
gst_object_unref (pad);
|
|
}
|
|
|
|
g_mutex_init (&parse_bin->expose_lock);
|
|
parse_bin->parse_chain = NULL;
|
|
|
|
g_mutex_init (&parse_bin->dyn_lock);
|
|
parse_bin->shutdown = FALSE;
|
|
parse_bin->blocked_pads = NULL;
|
|
|
|
g_mutex_init (&parse_bin->subtitle_lock);
|
|
|
|
parse_bin->encoding = g_strdup (DEFAULT_SUBTITLE_ENCODING);
|
|
|
|
parse_bin->expose_allstreams = DEFAULT_EXPOSE_ALL_STREAMS;
|
|
parse_bin->connection_speed = DEFAULT_CONNECTION_SPEED;
|
|
|
|
g_mutex_init (&parse_bin->cleanup_lock);
|
|
parse_bin->cleanup_thread = NULL;
|
|
|
|
GST_OBJECT_FLAG_SET (parse_bin, GST_BIN_FLAG_STREAMS_AWARE);
|
|
}
|
|
|
|
static void
|
|
gst_parse_bin_dispose (GObject * object)
|
|
{
|
|
GstParseBin *parse_bin;
|
|
|
|
parse_bin = GST_PARSE_BIN (object);
|
|
|
|
if (parse_bin->factories)
|
|
gst_plugin_feature_list_free (parse_bin->factories);
|
|
parse_bin->factories = NULL;
|
|
|
|
if (parse_bin->parse_chain)
|
|
gst_parse_chain_free (parse_bin->parse_chain);
|
|
parse_bin->parse_chain = NULL;
|
|
|
|
g_free (parse_bin->encoding);
|
|
parse_bin->encoding = NULL;
|
|
|
|
g_list_free (parse_bin->subtitles);
|
|
parse_bin->subtitles = NULL;
|
|
|
|
G_OBJECT_CLASS (parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gst_parse_bin_finalize (GObject * object)
|
|
{
|
|
GstParseBin *parse_bin;
|
|
|
|
parse_bin = GST_PARSE_BIN (object);
|
|
|
|
g_mutex_clear (&parse_bin->expose_lock);
|
|
g_mutex_clear (&parse_bin->dyn_lock);
|
|
g_mutex_clear (&parse_bin->subtitle_lock);
|
|
g_mutex_clear (&parse_bin->factories_lock);
|
|
g_mutex_clear (&parse_bin->cleanup_lock);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_parse_bin_set_sink_caps (GstParseBin * parsebin, GstCaps * caps)
|
|
{
|
|
GST_DEBUG_OBJECT (parsebin, "Setting new caps: %" GST_PTR_FORMAT, caps);
|
|
|
|
g_object_set (parsebin->typefind, "force-caps", caps, NULL);
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_parse_bin_get_sink_caps (GstParseBin * parsebin)
|
|
{
|
|
GstCaps *caps;
|
|
|
|
GST_DEBUG_OBJECT (parsebin, "Getting currently set caps");
|
|
|
|
g_object_get (parsebin->typefind, "force-caps", &caps, NULL);
|
|
|
|
return caps;
|
|
}
|
|
|
|
static void
|
|
gst_parse_bin_set_subs_encoding (GstParseBin * parsebin, const gchar * encoding)
|
|
{
|
|
GList *walk;
|
|
|
|
GST_DEBUG_OBJECT (parsebin, "Setting new encoding: %s",
|
|
GST_STR_NULL (encoding));
|
|
|
|
SUBTITLE_LOCK (parsebin);
|
|
g_free (parsebin->encoding);
|
|
parsebin->encoding = g_strdup (encoding);
|
|
|
|
/* set the subtitle encoding on all added elements */
|
|
for (walk = parsebin->subtitles; walk; walk = g_list_next (walk)) {
|
|
g_object_set (G_OBJECT (walk->data), "subtitle-encoding",
|
|
parsebin->encoding, NULL);
|
|
}
|
|
SUBTITLE_UNLOCK (parsebin);
|
|
}
|
|
|
|
static gchar *
|
|
gst_parse_bin_get_subs_encoding (GstParseBin * parsebin)
|
|
{
|
|
gchar *encoding;
|
|
|
|
GST_DEBUG_OBJECT (parsebin, "Getting currently set encoding");
|
|
|
|
SUBTITLE_LOCK (parsebin);
|
|
encoding = g_strdup (parsebin->encoding);
|
|
SUBTITLE_UNLOCK (parsebin);
|
|
|
|
return encoding;
|
|
}
|
|
|
|
static void
|
|
gst_parse_bin_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstParseBin *parsebin;
|
|
|
|
parsebin = GST_PARSE_BIN (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_SUBTITLE_ENCODING:
|
|
gst_parse_bin_set_subs_encoding (parsebin, g_value_get_string (value));
|
|
break;
|
|
case PROP_SINK_CAPS:
|
|
gst_parse_bin_set_sink_caps (parsebin, g_value_get_boxed (value));
|
|
break;
|
|
case PROP_EXPOSE_ALL_STREAMS:
|
|
parsebin->expose_allstreams = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_CONNECTION_SPEED:
|
|
GST_OBJECT_LOCK (parsebin);
|
|
parsebin->connection_speed = g_value_get_uint64 (value) * 1000;
|
|
GST_OBJECT_UNLOCK (parsebin);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_parse_bin_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstParseBin *parsebin;
|
|
|
|
parsebin = GST_PARSE_BIN (object);
|
|
switch (prop_id) {
|
|
case PROP_SUBTITLE_ENCODING:
|
|
g_value_take_string (value, gst_parse_bin_get_subs_encoding (parsebin));
|
|
break;
|
|
case PROP_SINK_CAPS:
|
|
g_value_take_boxed (value, gst_parse_bin_get_sink_caps (parsebin));
|
|
break;
|
|
case PROP_EXPOSE_ALL_STREAMS:
|
|
g_value_set_boolean (value, parsebin->expose_allstreams);
|
|
break;
|
|
case PROP_CONNECTION_SPEED:
|
|
GST_OBJECT_LOCK (parsebin);
|
|
g_value_set_uint64 (value, parsebin->connection_speed / 1000);
|
|
GST_OBJECT_UNLOCK (parsebin);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*****
|
|
* Default autoplug signal handlers
|
|
*****/
|
|
static gboolean
|
|
gst_parse_bin_autoplug_continue (GstElement * element, GstPad * pad,
|
|
GstCaps * caps)
|
|
{
|
|
static GstStaticCaps raw_caps = GST_STATIC_CAPS (DEFAULT_RAW_CAPS);
|
|
|
|
GST_DEBUG_OBJECT (element, "caps %" GST_PTR_FORMAT, caps);
|
|
|
|
/* If it matches our target caps, expose it */
|
|
if (gst_caps_can_intersect (caps, gst_static_caps_get (&raw_caps))) {
|
|
GST_DEBUG_OBJECT (element, "autoplug-continue returns FALSE");
|
|
return FALSE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (element, "autoplug-continue returns TRUE");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GValueArray *
|
|
gst_parse_bin_autoplug_factories (GstElement * element, GstPad * pad,
|
|
GstCaps * caps)
|
|
{
|
|
GList *list, *tmp;
|
|
GValueArray *result;
|
|
GstParseBin *parsebin = GST_PARSE_BIN_CAST (element);
|
|
|
|
GST_DEBUG_OBJECT (element, "finding factories");
|
|
|
|
/* return all compatible factories for caps */
|
|
g_mutex_lock (&parsebin->factories_lock);
|
|
gst_parse_bin_update_factories_list (parsebin);
|
|
list =
|
|
gst_element_factory_list_filter (parsebin->factories, caps, GST_PAD_SINK,
|
|
gst_caps_is_fixed (caps));
|
|
g_mutex_unlock (&parsebin->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_parse_bin_autoplug_sort (GstElement * element, GstPad * pad,
|
|
GstCaps * caps, GValueArray * factories)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static GstAutoplugSelectResult
|
|
gst_parse_bin_autoplug_select (GstElement * element, GstPad * pad,
|
|
GstCaps * caps, GstElementFactory * factory)
|
|
{
|
|
/* Try factory. */
|
|
return GST_AUTOPLUG_SELECT_TRY;
|
|
}
|
|
|
|
static gboolean
|
|
gst_parse_bin_autoplug_query (GstElement * element, GstPad * pad,
|
|
GstQuery * query)
|
|
{
|
|
/* No query handled here */
|
|
return FALSE;
|
|
}
|
|
|
|
/********
|
|
* Discovery methods
|
|
*****/
|
|
|
|
static gboolean is_demuxer_element (GstElement * srcelement);
|
|
|
|
static gboolean connect_pad (GstParseBin * parsebin, GstElement * src,
|
|
GstParsePad * parsepad, GstPad * pad, GstCaps * caps,
|
|
GValueArray * factories, GstParseChain * chain, gchar ** deadend_details);
|
|
static GList *connect_element (GstParseBin * parsebin, GstParseElement * pelem,
|
|
GstParseChain * chain);
|
|
static void expose_pad (GstParseBin * parsebin, GstElement * src,
|
|
GstParsePad * parsepad, GstPad * pad, GstCaps * caps,
|
|
GstParseChain * chain);
|
|
|
|
static void pad_added_cb (GstElement * element, GstPad * pad,
|
|
GstParseChain * chain);
|
|
static void pad_removed_cb (GstElement * element, GstPad * pad,
|
|
GstParseChain * chain);
|
|
static void no_more_pads_cb (GstElement * element, GstParseChain * chain);
|
|
|
|
static GstParseGroup *gst_parse_chain_get_current_group (GstParseChain * chain);
|
|
|
|
static gboolean
|
|
clear_sticky_events (GstPad * pad, GstEvent ** event, gpointer user_data)
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "clearing sticky event %" GST_PTR_FORMAT, *event);
|
|
gst_event_unref (*event);
|
|
*event = NULL;
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
copy_sticky_events (GstPad * pad, GstEvent ** eventptr, gpointer user_data)
|
|
{
|
|
GstParsePad *ppad = GST_PARSE_PAD (user_data);
|
|
GstEvent *event = gst_event_ref (*eventptr);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CAPS:{
|
|
GstCaps *caps = NULL;
|
|
gst_event_parse_caps (event, &caps);
|
|
gst_parse_pad_update_caps (ppad, caps);
|
|
break;
|
|
}
|
|
case GST_EVENT_STREAM_START:{
|
|
event = gst_parse_pad_stream_start_event (ppad, event);
|
|
break;
|
|
}
|
|
case GST_EVENT_STREAM_COLLECTION:{
|
|
GstStreamCollection *collection = NULL;
|
|
gst_event_parse_stream_collection (event, &collection);
|
|
gst_parse_pad_update_stream_collection (ppad, collection);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (ppad, "store sticky event %" GST_PTR_FORMAT, event);
|
|
gst_pad_store_sticky_event (GST_PAD_CAST (ppad), event);
|
|
gst_event_unref (event);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
parse_pad_set_target (GstParsePad * parsepad, GstPad * target)
|
|
{
|
|
GstPad *old_target = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (parsepad));
|
|
if (old_target)
|
|
gst_object_unref (old_target);
|
|
|
|
if (old_target == target)
|
|
return;
|
|
|
|
gst_pad_sticky_events_foreach (GST_PAD_CAST (parsepad),
|
|
clear_sticky_events, NULL);
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (parsepad), target);
|
|
|
|
if (target == NULL) {
|
|
GST_LOG_OBJECT (parsepad->parsebin, "Setting pad %" GST_PTR_FORMAT
|
|
" target to NULL", parsepad);
|
|
} else {
|
|
GST_LOG_OBJECT (parsepad->parsebin, "Setting pad %" GST_PTR_FORMAT
|
|
" target to %" GST_PTR_FORMAT, parsepad, target);
|
|
gst_pad_sticky_events_foreach (target, copy_sticky_events, parsepad);
|
|
}
|
|
}
|
|
|
|
/* 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 (GstParseBin * parsebin, GstElement * src, GstPad * pad,
|
|
GstCaps * caps, GstParseChain * chain)
|
|
{
|
|
gboolean apcontinue = TRUE;
|
|
GValueArray *factories = NULL, *result = NULL;
|
|
GstParsePad *parsepad;
|
|
GstElementFactory *factory;
|
|
const gchar *classification;
|
|
gboolean is_parser_converter = FALSE;
|
|
gboolean res;
|
|
gchar *deadend_details = NULL;
|
|
|
|
GST_DEBUG_OBJECT (parsebin, "Pad %s:%s caps:%" GST_PTR_FORMAT,
|
|
GST_DEBUG_PAD_NAME (pad), caps);
|
|
|
|
if (chain->elements
|
|
&& src != ((GstParseElement *) chain->elements->data)->element
|
|
&& src != ((GstParseElement *) chain->elements->data)->capsfilter) {
|
|
GST_ERROR_OBJECT (parsebin,
|
|
"New pad from not the last element in this chain");
|
|
return;
|
|
}
|
|
|
|
if (chain->demuxer) {
|
|
GstParseGroup *group;
|
|
GstParseChain *oldchain = chain;
|
|
GstParseElement *demux = (chain->elements ? chain->elements->data : NULL);
|
|
|
|
if (chain->current_pad)
|
|
gst_object_unref (chain->current_pad);
|
|
chain->current_pad = NULL;
|
|
|
|
/* 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_parse_chain_get_current_group (chain);
|
|
if (group && !g_list_find (group->children, chain)) {
|
|
chain = gst_parse_chain_new (parsebin, group, pad, caps);
|
|
group->children = g_list_prepend (group->children, chain);
|
|
}
|
|
CHAIN_MUTEX_UNLOCK (oldchain);
|
|
if (!group) {
|
|
GST_WARNING_OBJECT (parsebin, "No current group");
|
|
return;
|
|
}
|
|
|
|
/* If this is not a dynamic pad demuxer, we're no-more-pads
|
|
* already before anything else happens
|
|
*/
|
|
if (demux == NULL || !demux->no_more_pads_id)
|
|
group->no_more_pads = TRUE;
|
|
}
|
|
|
|
/* From here on we own a reference to the caps as
|
|
* we might create new caps below and would need
|
|
* to unref them later */
|
|
if (caps)
|
|
gst_caps_ref (caps);
|
|
|
|
if ((caps == NULL) || gst_caps_is_empty (caps))
|
|
goto unknown_type;
|
|
|
|
if (gst_caps_is_any (caps))
|
|
goto any_caps;
|
|
|
|
if (!chain->current_pad)
|
|
chain->current_pad = gst_parse_pad_new (parsebin, chain);
|
|
|
|
parsepad = gst_object_ref (chain->current_pad);
|
|
gst_pad_set_active (GST_PAD_CAST (parsepad), TRUE);
|
|
parse_pad_set_target (parsepad, pad);
|
|
|
|
/* 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't 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 (parsebin),
|
|
gst_parse_bin_signals[SIGNAL_AUTOPLUG_CONTINUE], 0, parsepad, caps,
|
|
&apcontinue);
|
|
else
|
|
apcontinue = TRUE;
|
|
|
|
/* 1.a if autoplug-continue is FALSE or caps is a raw format, goto pad_is_final */
|
|
if (!apcontinue)
|
|
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_metadata (factory, GST_ELEMENT_METADATA_KLASS);
|
|
is_parser_converter = (strstr (classification, "Parser")
|
|
&& strstr (classification, "Converter"));
|
|
|
|
/* FIXME: We just need to be sure that the next element is not a parser */
|
|
/* 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;
|
|
} else if (!is_parser_converter) {
|
|
gst_caps_unref (caps);
|
|
caps = gst_pad_get_current_caps (pad);
|
|
if (!caps) {
|
|
GST_DEBUG_OBJECT (parsebin,
|
|
"No final caps set yet, delaying autoplugging");
|
|
gst_object_unref (parsepad);
|
|
goto setup_caps_delay;
|
|
}
|
|
}
|
|
|
|
/* 1.d else get the factories and if there's no compatible factory goto
|
|
* unknown_type */
|
|
g_signal_emit (G_OBJECT (parsebin),
|
|
gst_parse_bin_signals[SIGNAL_AUTOPLUG_FACTORIES], 0, parsepad, 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 handler */
|
|
if (factories->n_values == 0) {
|
|
g_value_array_free (factories);
|
|
|
|
if (parsebin->expose_allstreams) {
|
|
/* If we expose all streams, we only need to inform the application about
|
|
* a missing handler but still expose it. We also make sure the stream
|
|
* type is unknown. */
|
|
if (parsepad->in_a_fallback_collection) {
|
|
GstStream *newstream;
|
|
GST_LOG_OBJECT (parsepad, "Existing GstStream %" GST_PTR_FORMAT,
|
|
parsepad->active_stream);
|
|
g_assert (parsepad->active_stream);
|
|
newstream =
|
|
gst_stream_new (gst_stream_get_stream_id (parsepad->active_stream),
|
|
caps, GST_STREAM_TYPE_UNKNOWN,
|
|
gst_stream_get_stream_flags (parsepad->active_stream));
|
|
gst_object_replace ((GstObject **) & parsepad->active_stream,
|
|
(GstObject *) newstream);
|
|
GST_LOG_OBJECT (parsepad, "New GstStream %" GST_PTR_FORMAT,
|
|
parsepad->active_stream);
|
|
}
|
|
gst_element_post_message (GST_ELEMENT_CAST (parsebin),
|
|
gst_missing_decoder_message_new (GST_ELEMENT_CAST (parsebin), caps));
|
|
goto expose_pad;
|
|
}
|
|
/* Else we will bail out */
|
|
gst_object_unref (parsepad);
|
|
goto unknown_type;
|
|
}
|
|
|
|
/* 1.e sort some more. */
|
|
g_signal_emit (G_OBJECT (parsebin),
|
|
gst_parse_bin_signals[SIGNAL_AUTOPLUG_SORT], 0, parsepad, caps, factories,
|
|
&result);
|
|
if (result) {
|
|
g_value_array_free (factories);
|
|
factories = result;
|
|
}
|
|
|
|
/* 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;
|
|
GstParseElement *pelem;
|
|
|
|
g_assert (chain->elements != NULL);
|
|
pelem = (GstParseElement *) 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_element_factory_list_is_type (factory,
|
|
GST_ELEMENT_FACTORY_TYPE_PARSER)) {
|
|
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);
|
|
filter_caps = gst_caps_merge (filter_caps, intersection);
|
|
gst_caps_unref (tcaps);
|
|
}
|
|
}
|
|
|
|
/* Append the parser caps to prevent any not-negotiated errors */
|
|
filter_caps = gst_caps_merge (filter_caps, gst_caps_ref (caps));
|
|
|
|
pelem->capsfilter = gst_element_factory_make ("capsfilter", NULL);
|
|
g_object_set (G_OBJECT (pelem->capsfilter), "caps", filter_caps, NULL);
|
|
gst_caps_unref (filter_caps);
|
|
gst_element_set_state (pelem->capsfilter, GST_STATE_PAUSED);
|
|
gst_bin_add (GST_BIN_CAST (parsebin), gst_object_ref (pelem->capsfilter));
|
|
|
|
parse_pad_set_target (parsepad, NULL);
|
|
p = gst_element_get_static_pad (pelem->capsfilter, "sink");
|
|
gst_pad_link_full (pad, p, GST_PAD_LINK_CHECK_NOTHING);
|
|
gst_object_unref (p);
|
|
p = gst_element_get_static_pad (pelem->capsfilter, "src");
|
|
parse_pad_set_target (parsepad, p);
|
|
pad = p;
|
|
|
|
gst_caps_unref (caps);
|
|
|
|
caps = gst_pad_get_current_caps (pad);
|
|
if (!caps) {
|
|
GST_DEBUG_OBJECT (parsebin,
|
|
"No final caps set yet, delaying autoplugging");
|
|
gst_object_unref (parsepad);
|
|
g_value_array_free (factories);
|
|
goto setup_caps_delay;
|
|
}
|
|
}
|
|
|
|
/* 1.h else continue autoplugging something from the list. */
|
|
GST_LOG_OBJECT (pad, "Let's continue discovery on this pad");
|
|
res =
|
|
connect_pad (parsebin, src, parsepad, pad, caps, factories, chain,
|
|
&deadend_details);
|
|
|
|
/* Need to unref the capsfilter srcpad here if
|
|
* we inserted a capsfilter */
|
|
if (is_parser_converter)
|
|
gst_object_unref (pad);
|
|
|
|
gst_object_unref (parsepad);
|
|
g_value_array_free (factories);
|
|
|
|
if (!res)
|
|
goto unknown_type;
|
|
|
|
gst_caps_unref (caps);
|
|
|
|
return;
|
|
|
|
expose_pad:
|
|
{
|
|
GST_LOG_OBJECT (parsebin, "Pad is final. autoplug-continue:%d", apcontinue);
|
|
expose_pad (parsebin, src, parsepad, pad, caps, chain);
|
|
gst_object_unref (parsepad);
|
|
gst_caps_unref (caps);
|
|
return;
|
|
}
|
|
|
|
unknown_type:
|
|
{
|
|
GST_LOG_OBJECT (pad, "Unknown type, posting message and firing signal");
|
|
|
|
chain->deadend_details = deadend_details;
|
|
chain->deadend = TRUE;
|
|
chain->drained = TRUE;
|
|
chain->endcaps = caps;
|
|
gst_object_replace ((GstObject **) & chain->current_pad, NULL);
|
|
|
|
gst_element_post_message (GST_ELEMENT_CAST (parsebin),
|
|
gst_missing_decoder_message_new (GST_ELEMENT_CAST (parsebin), caps));
|
|
|
|
g_signal_emit (G_OBJECT (parsebin),
|
|
gst_parse_bin_signals[SIGNAL_UNKNOWN_TYPE], 0, pad, caps);
|
|
|
|
/* Try to expose anything */
|
|
EXPOSE_LOCK (parsebin);
|
|
if (parsebin->parse_chain) {
|
|
if (gst_parse_chain_is_complete (parsebin->parse_chain)) {
|
|
gst_parse_bin_expose (parsebin);
|
|
}
|
|
}
|
|
EXPOSE_UNLOCK (parsebin);
|
|
|
|
if (src == parsebin->typefind) {
|
|
if (!caps || gst_caps_is_empty (caps)) {
|
|
GST_ELEMENT_ERROR (parsebin, STREAM, TYPE_NOT_FOUND,
|
|
(_("Could not determine type of stream")), (NULL));
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
#if 1
|
|
non_fixed:
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "pad has non-fixed caps delay autoplugging");
|
|
gst_object_unref (parsepad);
|
|
goto setup_caps_delay;
|
|
}
|
|
#endif
|
|
any_caps:
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "pad has ANY caps, delaying auto-plugging");
|
|
goto setup_caps_delay;
|
|
}
|
|
setup_caps_delay:
|
|
{
|
|
GstPendingPad *ppad;
|
|
|
|
/* connect to caps notification */
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
GST_LOG_OBJECT (parsebin, "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_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
|
|
pad_event_cb, ppad, NULL);
|
|
chain->pending_pads = g_list_prepend (chain->pending_pads, ppad);
|
|
ppad->notify_caps_id = g_signal_connect (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);
|
|
if (caps)
|
|
gst_caps_unref (caps);
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void
|
|
add_error_filter (GstParseBin * parsebin, GstElement * element)
|
|
{
|
|
GST_OBJECT_LOCK (parsebin);
|
|
parsebin->filtered = g_list_prepend (parsebin->filtered, element);
|
|
GST_OBJECT_UNLOCK (parsebin);
|
|
}
|
|
|
|
static void
|
|
remove_error_filter (GstParseBin * parsebin, GstElement * element,
|
|
GstMessage ** error)
|
|
{
|
|
GList *l;
|
|
|
|
GST_OBJECT_LOCK (parsebin);
|
|
parsebin->filtered = g_list_remove (parsebin->filtered, element);
|
|
|
|
if (error)
|
|
*error = NULL;
|
|
|
|
l = parsebin->filtered_errors;
|
|
while (l) {
|
|
GstMessage *msg = l->data;
|
|
|
|
if (GST_MESSAGE_SRC (msg) == GST_OBJECT_CAST (element)) {
|
|
/* Get the last error of this element, i.e. the earliest */
|
|
if (error)
|
|
gst_message_replace (error, msg);
|
|
gst_message_unref (msg);
|
|
l = parsebin->filtered_errors =
|
|
g_list_delete_link (parsebin->filtered_errors, l);
|
|
} else {
|
|
l = l->next;
|
|
}
|
|
}
|
|
GST_OBJECT_UNLOCK (parsebin);
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
gboolean ret;
|
|
GstPad *peer;
|
|
} SendStickyEventsData;
|
|
|
|
static gboolean
|
|
send_sticky_event (GstPad * pad, GstEvent ** event, gpointer user_data)
|
|
{
|
|
SendStickyEventsData *data = user_data;
|
|
gboolean ret;
|
|
|
|
ret = gst_pad_send_event (data->peer, gst_event_ref (*event));
|
|
if (!ret)
|
|
data->ret = FALSE;
|
|
|
|
return data->ret;
|
|
}
|
|
|
|
static gboolean
|
|
send_sticky_events (GstParseBin * parsebin, GstPad * pad)
|
|
{
|
|
SendStickyEventsData data;
|
|
|
|
data.ret = TRUE;
|
|
data.peer = gst_pad_get_peer (pad);
|
|
|
|
gst_pad_sticky_events_foreach (pad, send_sticky_event, &data);
|
|
|
|
gst_object_unref (data.peer);
|
|
|
|
return data.ret;
|
|
}
|
|
|
|
static gchar *
|
|
error_message_to_string (GstMessage * msg)
|
|
{
|
|
GError *err;
|
|
gchar *debug, *message, *full_message;
|
|
|
|
gst_message_parse_error (msg, &err, &debug);
|
|
|
|
message = gst_error_get_message (err->domain, err->code);
|
|
|
|
if (debug)
|
|
full_message = g_strdup_printf ("%s\n%s\n%s", message, err->message, debug);
|
|
else
|
|
full_message = g_strdup_printf ("%s\n%s", message, err->message);
|
|
|
|
g_free (message);
|
|
g_free (debug);
|
|
g_clear_error (&err);
|
|
|
|
return full_message;
|
|
}
|
|
|
|
/* We consider elements as "simple demuxer" when they are a demuxer
|
|
* with one and only one ALWAYS source pad.
|
|
*/
|
|
static gboolean
|
|
is_simple_demuxer_factory (GstElementFactory * factory)
|
|
{
|
|
if (strstr (gst_element_factory_get_metadata (factory,
|
|
GST_ELEMENT_METADATA_KLASS), "Demuxer")) {
|
|
const GList *tmp;
|
|
gint num_alway_srcpads = 0;
|
|
|
|
for (tmp = gst_element_factory_get_static_pad_templates (factory);
|
|
tmp; tmp = tmp->next) {
|
|
GstStaticPadTemplate *template = tmp->data;
|
|
|
|
if (template->direction == GST_PAD_SRC) {
|
|
if (template->presence == GST_PAD_ALWAYS) {
|
|
if (num_alway_srcpads >= 0)
|
|
num_alway_srcpads++;
|
|
} else {
|
|
num_alway_srcpads = -1;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if (num_alway_srcpads == 1)
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* connect_pad:
|
|
*
|
|
* Try to connect the given pad to an element created from one of the factories,
|
|
* and recursively.
|
|
*
|
|
* Note that parsepad is ghosting pad, and so pad is linked; be sure to unset parsepad's
|
|
* target before trying to link pad.
|
|
*
|
|
* Returns TRUE if an element was properly created and linked
|
|
*/
|
|
static gboolean
|
|
connect_pad (GstParseBin * parsebin, GstElement * src, GstParsePad * parsepad,
|
|
GstPad * pad, GstCaps * caps, GValueArray * factories,
|
|
GstParseChain * chain, gchar ** deadend_details)
|
|
{
|
|
gboolean res = FALSE;
|
|
GString *error_details = NULL;
|
|
|
|
g_return_val_if_fail (factories != NULL, FALSE);
|
|
g_return_val_if_fail (factories->n_values > 0, FALSE);
|
|
|
|
GST_DEBUG_OBJECT (parsebin,
|
|
"pad %s:%s , chain:%p, %d factories, caps %" GST_PTR_FORMAT,
|
|
GST_DEBUG_PAD_NAME (pad), chain, factories->n_values, caps);
|
|
|
|
error_details = g_string_new ("");
|
|
|
|
/* 2. Try to create an element and link to it */
|
|
while (factories->n_values > 0) {
|
|
GstAutoplugSelectResult ret;
|
|
GstElementFactory *factory;
|
|
GstParseElement *pelem;
|
|
GstElement *element;
|
|
GstPad *sinkpad;
|
|
GParamSpec *pspec;
|
|
gboolean subtitle;
|
|
GList *to_connect = NULL;
|
|
gboolean is_parser_converter = FALSE, is_simple_demuxer = FALSE;
|
|
|
|
/* Set parsepad target to pad again, it might've been unset
|
|
* below but we came back here because something failed
|
|
*/
|
|
parse_pad_set_target (parsepad, 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);
|
|
|
|
GST_LOG_OBJECT (src, "trying factory %" GST_PTR_FORMAT, factory);
|
|
|
|
/* 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 parser would want.
|
|
*
|
|
* A subset check will fail here because the parser caps
|
|
* will be generic and while the parser 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_DEBUG_OBJECT (src,
|
|
"caps %" GST_PTR_FORMAT " not subset of %" GST_PTR_FORMAT, 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.
|
|
*/
|
|
is_parser_converter = strstr (gst_element_factory_get_metadata (factory,
|
|
GST_ELEMENT_METADATA_KLASS), "Parser") != NULL;
|
|
is_simple_demuxer = is_simple_demuxer_factory (factory);
|
|
|
|
if (is_parser_converter) {
|
|
gboolean skip = FALSE;
|
|
GList *l;
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
for (l = chain->elements; l; l = l->next) {
|
|
GstParseElement *pelem = (GstParseElement *) l->data;
|
|
GstElement *otherelement = pelem->element;
|
|
|
|
if (gst_element_get_factory (otherelement) == factory) {
|
|
skip = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!skip && chain->parent && chain->parent->parent) {
|
|
GstParseChain *parent_chain = chain->parent->parent;
|
|
GstParseElement *pelem =
|
|
parent_chain->elements ? parent_chain->elements->data : NULL;
|
|
|
|
if (pelem && gst_element_get_factory (pelem->element) == factory)
|
|
skip = TRUE;
|
|
}
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
if (skip) {
|
|
GST_DEBUG_OBJECT (parsebin,
|
|
"Skipping factory '%s' because it was already used in this chain",
|
|
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST (factory)));
|
|
continue;
|
|
}
|
|
|
|
}
|
|
|
|
/* Expose pads if the next factory is a decoder */
|
|
if (gst_element_factory_list_is_type (factory,
|
|
GST_ELEMENT_FACTORY_TYPE_DECODER)) {
|
|
ret = GST_AUTOPLUG_SELECT_EXPOSE;
|
|
} else {
|
|
/* emit autoplug-select to see what we should do with it. */
|
|
g_signal_emit (G_OBJECT (parsebin),
|
|
gst_parse_bin_signals[SIGNAL_AUTOPLUG_SELECT],
|
|
0, parsepad, caps, factory, &ret);
|
|
}
|
|
|
|
switch (ret) {
|
|
case GST_AUTOPLUG_SELECT_TRY:
|
|
GST_DEBUG_OBJECT (parsebin, "autoplug select requested try");
|
|
break;
|
|
case GST_AUTOPLUG_SELECT_EXPOSE:
|
|
GST_DEBUG_OBJECT (parsebin, "autoplug select requested expose");
|
|
/* expose the pad, we don't have the source element */
|
|
expose_pad (parsebin, src, parsepad, pad, caps, chain);
|
|
res = TRUE;
|
|
goto beach;
|
|
case GST_AUTOPLUG_SELECT_SKIP:
|
|
GST_DEBUG_OBJECT (parsebin, "autoplug select requested skip");
|
|
continue;
|
|
default:
|
|
GST_WARNING_OBJECT (parsebin, "autoplug select returned unhandled %d",
|
|
ret);
|
|
break;
|
|
}
|
|
|
|
/* 2.0. Unlink pad */
|
|
parse_pad_set_target (parsepad, NULL);
|
|
|
|
/* 2.1. Try to create an element */
|
|
if ((element = gst_element_factory_create (factory, NULL)) == NULL) {
|
|
GST_WARNING_OBJECT (parsebin, "Could not create an element from %s",
|
|
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
|
|
g_string_append_printf (error_details,
|
|
"Could not create an element from %s\n",
|
|
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
|
|
continue;
|
|
}
|
|
|
|
/* Filter errors, this will prevent the element from causing the pipeline
|
|
* to error while we test it using READY state. */
|
|
add_error_filter (parsebin, element);
|
|
|
|
/* We don't yet want the bin to control the element's state */
|
|
gst_element_set_locked_state (element, TRUE);
|
|
|
|
/* ... add it ... */
|
|
if (!(gst_bin_add (GST_BIN_CAST (parsebin), element))) {
|
|
GST_WARNING_OBJECT (parsebin, "Couldn't add %s to the bin",
|
|
GST_ELEMENT_NAME (element));
|
|
remove_error_filter (parsebin, element, NULL);
|
|
g_string_append_printf (error_details, "Couldn't add %s to the bin\n",
|
|
GST_ELEMENT_NAME (element));
|
|
gst_object_unref (element);
|
|
continue;
|
|
}
|
|
|
|
/* Find its sink pad. */
|
|
sinkpad = NULL;
|
|
GST_OBJECT_LOCK (element);
|
|
if (element->sinkpads != NULL)
|
|
sinkpad = gst_object_ref (element->sinkpads->data);
|
|
GST_OBJECT_UNLOCK (element);
|
|
|
|
if (sinkpad == NULL) {
|
|
GST_WARNING_OBJECT (parsebin, "Element %s doesn't have a sink pad",
|
|
GST_ELEMENT_NAME (element));
|
|
remove_error_filter (parsebin, element, NULL);
|
|
g_string_append_printf (error_details,
|
|
"Element %s doesn't have a sink pad", GST_ELEMENT_NAME (element));
|
|
gst_bin_remove (GST_BIN (parsebin), element);
|
|
continue;
|
|
}
|
|
|
|
/* ... and try to link */
|
|
if ((gst_pad_link_full (pad, sinkpad,
|
|
GST_PAD_LINK_CHECK_NOTHING)) != GST_PAD_LINK_OK) {
|
|
GST_WARNING_OBJECT (parsebin, "Link failed on pad %s:%s",
|
|
GST_DEBUG_PAD_NAME (sinkpad));
|
|
remove_error_filter (parsebin, element, NULL);
|
|
g_string_append_printf (error_details, "Link failed on pad %s:%s",
|
|
GST_DEBUG_PAD_NAME (sinkpad));
|
|
gst_object_unref (sinkpad);
|
|
gst_bin_remove (GST_BIN (parsebin), element);
|
|
continue;
|
|
}
|
|
|
|
/* ... activate it ... */
|
|
if ((gst_element_set_state (element,
|
|
GST_STATE_READY)) == GST_STATE_CHANGE_FAILURE) {
|
|
GstMessage *error_msg;
|
|
|
|
GST_WARNING_OBJECT (parsebin, "Couldn't set %s to READY",
|
|
GST_ELEMENT_NAME (element));
|
|
remove_error_filter (parsebin, element, &error_msg);
|
|
|
|
if (error_msg) {
|
|
gchar *error_string = error_message_to_string (error_msg);
|
|
g_string_append_printf (error_details, "Couldn't set %s to READY:\n%s",
|
|
GST_ELEMENT_NAME (element), error_string);
|
|
gst_message_unref (error_msg);
|
|
g_free (error_string);
|
|
} else {
|
|
g_string_append_printf (error_details, "Couldn't set %s to READY",
|
|
GST_ELEMENT_NAME (element));
|
|
}
|
|
gst_object_unref (sinkpad);
|
|
gst_bin_remove (GST_BIN (parsebin), element);
|
|
continue;
|
|
}
|
|
|
|
/* check if we still accept the caps on the pad after setting
|
|
* the element to READY */
|
|
if (!gst_pad_query_accept_caps (sinkpad, caps)) {
|
|
GstMessage *error_msg;
|
|
|
|
GST_WARNING_OBJECT (parsebin, "Element %s does not accept caps",
|
|
GST_ELEMENT_NAME (element));
|
|
|
|
remove_error_filter (parsebin, element, &error_msg);
|
|
|
|
if (error_msg) {
|
|
gchar *error_string = error_message_to_string (error_msg);
|
|
g_string_append_printf (error_details,
|
|
"Element %s does not accept caps:\n%s", GST_ELEMENT_NAME (element),
|
|
error_string);
|
|
gst_message_unref (error_msg);
|
|
g_free (error_string);
|
|
} else {
|
|
g_string_append_printf (error_details,
|
|
"Element %s does not accept caps", GST_ELEMENT_NAME (element));
|
|
}
|
|
|
|
gst_element_set_state (element, GST_STATE_NULL);
|
|
gst_object_unref (sinkpad);
|
|
gst_bin_remove (GST_BIN (parsebin), element);
|
|
continue;
|
|
}
|
|
|
|
gst_object_unref (sinkpad);
|
|
GST_LOG_OBJECT (parsebin, "linked on pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
pelem = g_slice_new0 (GstParseElement);
|
|
pelem->element = gst_object_ref (element);
|
|
pelem->capsfilter = NULL;
|
|
chain->elements = g_list_prepend (chain->elements, pelem);
|
|
chain->demuxer = is_demuxer_element (element);
|
|
|
|
/* If we plugging a parser, mark the chain as parsed */
|
|
chain->parsed |= is_parser_converter;
|
|
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
|
|
/* Set connection-speed property if needed */
|
|
if (chain->demuxer) {
|
|
GParamSpec *pspec;
|
|
|
|
if ((pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (element),
|
|
"connection-speed"))) {
|
|
guint64 speed = parsebin->connection_speed / 1000;
|
|
gboolean wrong_type = FALSE;
|
|
|
|
if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_UINT) {
|
|
GParamSpecUInt *pspecuint = G_PARAM_SPEC_UINT (pspec);
|
|
|
|
speed = CLAMP (speed, pspecuint->minimum, pspecuint->maximum);
|
|
} else if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_INT) {
|
|
GParamSpecInt *pspecint = G_PARAM_SPEC_INT (pspec);
|
|
|
|
speed = CLAMP (speed, pspecint->minimum, pspecint->maximum);
|
|
} else if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_UINT64) {
|
|
GParamSpecUInt64 *pspecuint = G_PARAM_SPEC_UINT64 (pspec);
|
|
|
|
speed = CLAMP (speed, pspecuint->minimum, pspecuint->maximum);
|
|
} else if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_INT64) {
|
|
GParamSpecInt64 *pspecint = G_PARAM_SPEC_INT64 (pspec);
|
|
|
|
speed = CLAMP (speed, pspecint->minimum, pspecint->maximum);
|
|
} else {
|
|
GST_WARNING_OBJECT (parsebin,
|
|
"The connection speed property %" G_GUINT64_FORMAT " of type %s"
|
|
" is not useful not setting it", speed,
|
|
g_type_name (G_PARAM_SPEC_TYPE (pspec)));
|
|
wrong_type = TRUE;
|
|
}
|
|
|
|
if (!wrong_type) {
|
|
GST_DEBUG_OBJECT (parsebin,
|
|
"setting connection-speed=%" G_GUINT64_FORMAT
|
|
" to demuxer element", speed);
|
|
|
|
g_object_set (element, "connection-speed", speed, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* try to configure the subtitle encoding property when we can */
|
|
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (element),
|
|
"subtitle-encoding");
|
|
if (pspec && G_PARAM_SPEC_VALUE_TYPE (pspec) == G_TYPE_STRING) {
|
|
SUBTITLE_LOCK (parsebin);
|
|
GST_DEBUG_OBJECT (parsebin,
|
|
"setting subtitle-encoding=%s to element", parsebin->encoding);
|
|
g_object_set (G_OBJECT (element), "subtitle-encoding", parsebin->encoding,
|
|
NULL);
|
|
SUBTITLE_UNLOCK (parsebin);
|
|
subtitle = TRUE;
|
|
} else {
|
|
subtitle = FALSE;
|
|
}
|
|
|
|
/* link this element further */
|
|
to_connect = connect_element (parsebin, pelem, chain);
|
|
|
|
if ((is_simple_demuxer || is_parser_converter) && to_connect) {
|
|
GList *l;
|
|
for (l = to_connect; l; l = g_list_next (l)) {
|
|
GstPad *opad = GST_PAD_CAST (l->data);
|
|
GstCaps *ocaps;
|
|
|
|
ocaps = get_pad_caps (opad);
|
|
analyze_new_pad (parsebin, pelem->element, opad, ocaps, chain);
|
|
if (ocaps)
|
|
gst_caps_unref (ocaps);
|
|
|
|
gst_object_unref (opad);
|
|
}
|
|
g_list_free (to_connect);
|
|
to_connect = NULL;
|
|
}
|
|
|
|
/* Bring the element to the state of the parent */
|
|
|
|
/* First lock element's sinkpad stream lock so no data reaches
|
|
* the possible new element added when caps are sent by element
|
|
* while we're still sending sticky events */
|
|
GST_PAD_STREAM_LOCK (sinkpad);
|
|
|
|
if ((gst_element_set_state (element,
|
|
GST_STATE_PAUSED)) == GST_STATE_CHANGE_FAILURE) {
|
|
GstParseElement *dtmp = NULL;
|
|
GstElement *tmp = NULL;
|
|
GstMessage *error_msg;
|
|
|
|
GST_PAD_STREAM_UNLOCK (sinkpad);
|
|
|
|
GST_WARNING_OBJECT (parsebin, "Couldn't set %s to PAUSED",
|
|
GST_ELEMENT_NAME (element));
|
|
|
|
g_list_free_full (to_connect, (GDestroyNotify) gst_object_unref);
|
|
to_connect = NULL;
|
|
|
|
remove_error_filter (parsebin, element, &error_msg);
|
|
|
|
if (error_msg) {
|
|
gchar *error_string = error_message_to_string (error_msg);
|
|
g_string_append_printf (error_details, "Couldn't set %s to PAUSED:\n%s",
|
|
GST_ELEMENT_NAME (element), error_string);
|
|
gst_message_unref (error_msg);
|
|
g_free (error_string);
|
|
} else {
|
|
g_string_append_printf (error_details, "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() */
|
|
if (dtmp->pad_added_id)
|
|
g_signal_handler_disconnect (tmp, dtmp->pad_added_id);
|
|
if (dtmp->pad_removed_id)
|
|
g_signal_handler_disconnect (tmp, dtmp->pad_removed_id);
|
|
if (dtmp->no_more_pads_id)
|
|
g_signal_handler_disconnect (tmp, dtmp->no_more_pads_id);
|
|
|
|
for (l = chain->pending_pads; l;) {
|
|
GstPendingPad *pp = l->data;
|
|
GList *n;
|
|
|
|
if (GST_PAD_PARENT (pp->pad) != tmp) {
|
|
l = l->next;
|
|
continue;
|
|
}
|
|
|
|
gst_pending_pad_free (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 (parsebin), dtmp->capsfilter);
|
|
gst_element_set_state (dtmp->capsfilter, GST_STATE_NULL);
|
|
gst_object_unref (dtmp->capsfilter);
|
|
}
|
|
|
|
gst_bin_remove (GST_BIN (parsebin), tmp);
|
|
gst_element_set_state (tmp, GST_STATE_NULL);
|
|
|
|
gst_object_unref (tmp);
|
|
g_slice_free (GstParseElement, dtmp);
|
|
|
|
chain->elements = g_list_delete_link (chain->elements, chain->elements);
|
|
} while (tmp != element);
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
|
|
continue;
|
|
} else {
|
|
send_sticky_events (parsebin, pad);
|
|
/* Everything went well, the spice must flow now */
|
|
GST_PAD_STREAM_UNLOCK (sinkpad);
|
|
}
|
|
|
|
/* Remove error filter now, from now on we can't gracefully
|
|
* handle errors of the element anymore */
|
|
remove_error_filter (parsebin, element, NULL);
|
|
|
|
/* Now let the bin handle the state */
|
|
gst_element_set_locked_state (element, FALSE);
|
|
|
|
if (subtitle) {
|
|
SUBTITLE_LOCK (parsebin);
|
|
/* we added the element now, add it to the list of subtitle-encoding
|
|
* elements when we can set the property */
|
|
parsebin->subtitles = g_list_prepend (parsebin->subtitles, element);
|
|
SUBTITLE_UNLOCK (parsebin);
|
|
}
|
|
|
|
if (to_connect) {
|
|
GList *l;
|
|
for (l = to_connect; l; l = g_list_next (l)) {
|
|
GstPad *opad = GST_PAD_CAST (l->data);
|
|
GstCaps *ocaps;
|
|
|
|
ocaps = get_pad_caps (opad);
|
|
analyze_new_pad (parsebin, pelem->element, opad, ocaps, chain);
|
|
if (ocaps)
|
|
gst_caps_unref (ocaps);
|
|
|
|
gst_object_unref (opad);
|
|
}
|
|
g_list_free (to_connect);
|
|
to_connect = NULL;
|
|
}
|
|
|
|
res = TRUE;
|
|
break;
|
|
}
|
|
|
|
beach:
|
|
if (error_details)
|
|
*deadend_details = g_string_free (error_details, (error_details->len == 0
|
|
|| res));
|
|
else
|
|
*deadend_details = NULL;
|
|
|
|
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_query_caps (pad, NULL);
|
|
|
|
return caps;
|
|
}
|
|
|
|
/* Returns a list of pads that can be connected to already and
|
|
* connects to pad-added and related signals */
|
|
static GList *
|
|
connect_element (GstParseBin * parsebin, GstParseElement * pelem,
|
|
GstParseChain * chain)
|
|
{
|
|
GstElement *element = pelem->element;
|
|
GList *pads;
|
|
gboolean dynamic = FALSE;
|
|
GList *to_connect = NULL;
|
|
|
|
GST_DEBUG_OBJECT (parsebin,
|
|
"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 (parsebin, "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 (parsebin, "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 (parsebin,
|
|
"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 (parsebin, "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 (parsebin,
|
|
"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 (parsebin, "ignoring request padtemplate %s",
|
|
templ_name);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* 2. if there are more potential pads, connect to relevant signals */
|
|
if (dynamic) {
|
|
GST_LOG_OBJECT (parsebin, "Adding signals to element %s in chain %p",
|
|
GST_ELEMENT_NAME (element), chain);
|
|
pelem->pad_added_id = g_signal_connect (element, "pad-added",
|
|
G_CALLBACK (pad_added_cb), chain);
|
|
pelem->pad_removed_id = g_signal_connect (element, "pad-removed",
|
|
G_CALLBACK (pad_removed_cb), chain);
|
|
pelem->no_more_pads_id = g_signal_connect (element, "no-more-pads",
|
|
G_CALLBACK (no_more_pads_cb), chain);
|
|
}
|
|
|
|
/* 3. return all pads that can be connected to already */
|
|
|
|
return to_connect;
|
|
}
|
|
|
|
/* expose_pad:
|
|
*
|
|
* Expose the given pad on the chain as a parsed pad.
|
|
*/
|
|
static void
|
|
expose_pad (GstParseBin * parsebin, GstElement * src, GstParsePad * parsepad,
|
|
GstPad * pad, GstCaps * caps, GstParseChain * chain)
|
|
{
|
|
GST_DEBUG_OBJECT (parsebin, "pad %s:%s, chain:%p",
|
|
GST_DEBUG_PAD_NAME (pad), chain);
|
|
|
|
gst_parse_pad_activate (parsepad, chain);
|
|
chain->endpad = gst_object_ref (parsepad);
|
|
if (caps)
|
|
chain->endcaps = gst_caps_ref (caps);
|
|
else
|
|
chain->endcaps = NULL;
|
|
}
|
|
|
|
static void
|
|
type_found (GstElement * typefind, guint probability,
|
|
GstCaps * caps, GstParseBin * parse_bin)
|
|
{
|
|
GstPad *pad, *sink_pad;
|
|
|
|
GST_DEBUG_OBJECT (parse_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 (parse_bin, STREAM, WRONG_TYPE,
|
|
(_("This appears to be a text file")),
|
|
("ParseBin cannot parse 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 (parse_bin->have_type || parse_bin->parse_chain)
|
|
goto exit;
|
|
|
|
parse_bin->have_type = TRUE;
|
|
|
|
pad = gst_element_get_static_pad (typefind, "src");
|
|
sink_pad = gst_element_get_static_pad (typefind, "sink");
|
|
|
|
/* need some lock here to prevent race with shutdown state change
|
|
* which might yank away e.g. parse_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);
|
|
parse_bin->parse_chain = gst_parse_chain_new (parse_bin, NULL, pad, caps);
|
|
analyze_new_pad (parse_bin, typefind, pad, caps, parse_bin->parse_chain);
|
|
GST_PAD_STREAM_UNLOCK (sink_pad);
|
|
|
|
gst_object_unref (sink_pad);
|
|
gst_object_unref (pad);
|
|
|
|
exit:
|
|
return;
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
pad_event_cb (GstPad * pad, GstPadProbeInfo * info, gpointer data)
|
|
{
|
|
GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
|
|
GstPendingPad *ppad = (GstPendingPad *) data;
|
|
GstParseChain *chain = ppad->chain;
|
|
GstParseBin *parsebin = chain->parsebin;
|
|
|
|
g_assert (ppad);
|
|
g_assert (chain);
|
|
g_assert (parsebin);
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_EOS:
|
|
GST_DEBUG_OBJECT (pad, "Received EOS on a non final pad, this stream "
|
|
"ended too early");
|
|
chain->deadend = TRUE;
|
|
chain->drained = TRUE;
|
|
gst_object_replace ((GstObject **) & chain->current_pad, NULL);
|
|
/* we don't set the endcaps because NULL endcaps means early EOS */
|
|
|
|
EXPOSE_LOCK (parsebin);
|
|
if (parsebin->parse_chain)
|
|
if (gst_parse_chain_is_complete (parsebin->parse_chain))
|
|
gst_parse_bin_expose (parsebin);
|
|
EXPOSE_UNLOCK (parsebin);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return GST_PAD_PROBE_OK;
|
|
}
|
|
|
|
static void
|
|
pad_added_cb (GstElement * element, GstPad * pad, GstParseChain * chain)
|
|
{
|
|
GstCaps *caps;
|
|
GstParseBin *parsebin;
|
|
|
|
parsebin = chain->parsebin;
|
|
|
|
GST_DEBUG_OBJECT (pad, "pad added, chain:%p", chain);
|
|
|
|
caps = get_pad_caps (pad);
|
|
analyze_new_pad (parsebin, element, pad, caps, chain);
|
|
if (caps)
|
|
gst_caps_unref (caps);
|
|
|
|
EXPOSE_LOCK (parsebin);
|
|
if (parsebin->parse_chain) {
|
|
if (gst_parse_chain_is_complete (parsebin->parse_chain)) {
|
|
GST_LOG_OBJECT (parsebin,
|
|
"That was the last dynamic object, now attempting to expose the group");
|
|
if (!gst_parse_bin_expose (parsebin))
|
|
GST_WARNING_OBJECT (parsebin, "Couldn't expose group");
|
|
}
|
|
} else {
|
|
GST_DEBUG_OBJECT (parsebin, "No parse chain, new pad ignored");
|
|
}
|
|
EXPOSE_UNLOCK (parsebin);
|
|
}
|
|
|
|
static void
|
|
pad_removed_cb (GstElement * element, GstPad * pad, GstParseChain * 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) {
|
|
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, GstParseChain * chain)
|
|
{
|
|
GstParseGroup *group = NULL;
|
|
|
|
GST_LOG_OBJECT (element, "got no more pads");
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
if (!chain->elements
|
|
|| ((GstParseElement *) chain->elements->data)->element != element) {
|
|
GST_LOG_OBJECT (chain->parsebin, "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->parsebin,
|
|
"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) {
|
|
GList *iter;
|
|
for (iter = chain->next_groups; iter; iter = g_list_next (iter)) {
|
|
group = iter->data;
|
|
if (!group->no_more_pads)
|
|
break;
|
|
}
|
|
}
|
|
if (!group) {
|
|
GST_ERROR_OBJECT (chain->parsebin, "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;
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
|
|
EXPOSE_LOCK (chain->parsebin);
|
|
if (chain->parsebin->parse_chain) {
|
|
if (gst_parse_chain_is_complete (chain->parsebin->parse_chain)) {
|
|
gst_parse_bin_expose (chain->parsebin);
|
|
}
|
|
}
|
|
EXPOSE_UNLOCK (chain->parsebin);
|
|
}
|
|
|
|
static void
|
|
caps_notify_cb (GstPad * pad, GParamSpec * unused, GstParseChain * 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 */
|
|
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_metadata (srcfactory, GST_ELEMENT_METADATA_KLASS);
|
|
|
|
/* 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;
|
|
}
|
|
|
|
/* gst_parse_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 GstParseGroup *
|
|
gst_parse_chain_get_current_group (GstParseChain * chain)
|
|
{
|
|
GstParseGroup *group;
|
|
|
|
/* Now we know that we can really return something useful */
|
|
if (!chain->active_group) {
|
|
chain->active_group = group = gst_parse_group_new (chain->parsebin, chain);
|
|
} else if (!chain->active_group->no_more_pads) {
|
|
group = chain->active_group;
|
|
} else {
|
|
GList *iter;
|
|
group = NULL;
|
|
for (iter = chain->next_groups; iter; iter = g_list_next (iter)) {
|
|
GstParseGroup *next_group = iter->data;
|
|
|
|
if (!next_group->no_more_pads) {
|
|
group = next_group;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!group) {
|
|
group = gst_parse_group_new (chain->parsebin, chain);
|
|
chain->next_groups = g_list_append (chain->next_groups, group);
|
|
}
|
|
|
|
return group;
|
|
}
|
|
|
|
static void gst_parse_group_free_internal (GstParseGroup * group,
|
|
gboolean hide);
|
|
|
|
static void
|
|
gst_parse_chain_free_internal (GstParseChain * chain, gboolean hide)
|
|
{
|
|
GList *l, *set_to_null = NULL;
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
|
|
GST_DEBUG_OBJECT (chain->parsebin, "%s chain %p",
|
|
(hide ? "Hiding" : "Freeing"), chain);
|
|
|
|
if (chain->active_group) {
|
|
gst_parse_group_free_internal (chain->active_group, hide);
|
|
if (!hide)
|
|
chain->active_group = NULL;
|
|
}
|
|
|
|
for (l = chain->next_groups; l; l = l->next) {
|
|
gst_parse_group_free_internal ((GstParseGroup *) 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) {
|
|
GstParseGroup *group = l->data;
|
|
|
|
gst_parse_group_free (group);
|
|
}
|
|
g_list_free (chain->old_groups);
|
|
chain->old_groups = NULL;
|
|
}
|
|
|
|
gst_object_replace ((GstObject **) & chain->current_pad, NULL);
|
|
|
|
for (l = chain->pending_pads; l; l = l->next) {
|
|
GstPendingPad *ppad = l->data;
|
|
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) {
|
|
GstParseElement *pelem = l->data;
|
|
GstElement *element = pelem->element;
|
|
|
|
if (pelem->pad_added_id)
|
|
g_signal_handler_disconnect (element, pelem->pad_added_id);
|
|
pelem->pad_added_id = 0;
|
|
if (pelem->pad_removed_id)
|
|
g_signal_handler_disconnect (element, pelem->pad_removed_id);
|
|
pelem->pad_removed_id = 0;
|
|
if (pelem->no_more_pads_id)
|
|
g_signal_handler_disconnect (element, pelem->no_more_pads_id);
|
|
pelem->no_more_pads_id = 0;
|
|
|
|
if (pelem->capsfilter) {
|
|
if (GST_OBJECT_PARENT (pelem->capsfilter) ==
|
|
GST_OBJECT_CAST (chain->parsebin))
|
|
gst_bin_remove (GST_BIN_CAST (chain->parsebin), pelem->capsfilter);
|
|
if (!hide) {
|
|
set_to_null =
|
|
g_list_append (set_to_null, gst_object_ref (pelem->capsfilter));
|
|
}
|
|
}
|
|
|
|
if (GST_OBJECT_PARENT (element) == GST_OBJECT_CAST (chain->parsebin))
|
|
gst_bin_remove (GST_BIN_CAST (chain->parsebin), element);
|
|
if (!hide) {
|
|
set_to_null = g_list_append (set_to_null, gst_object_ref (element));
|
|
}
|
|
|
|
SUBTITLE_LOCK (chain->parsebin);
|
|
/* remove possible subtitle element */
|
|
chain->parsebin->subtitles =
|
|
g_list_remove (chain->parsebin->subtitles, element);
|
|
SUBTITLE_UNLOCK (chain->parsebin);
|
|
|
|
if (!hide) {
|
|
if (pelem->capsfilter) {
|
|
gst_object_unref (pelem->capsfilter);
|
|
pelem->capsfilter = NULL;
|
|
}
|
|
|
|
gst_object_unref (element);
|
|
l->data = NULL;
|
|
|
|
g_slice_free (GstParseElement, pelem);
|
|
}
|
|
}
|
|
if (!hide) {
|
|
g_list_free (chain->elements);
|
|
chain->elements = NULL;
|
|
}
|
|
|
|
if (chain->endpad) {
|
|
if (chain->endpad->exposed) {
|
|
GstPad *endpad = GST_PAD_CAST (chain->endpad);
|
|
GST_DEBUG_OBJECT (chain->parsebin, "Removing pad %s:%s",
|
|
GST_DEBUG_PAD_NAME (endpad));
|
|
gst_pad_push_event (endpad, gst_event_new_eos ());
|
|
gst_element_remove_pad (GST_ELEMENT_CAST (chain->parsebin), endpad);
|
|
}
|
|
|
|
parse_pad_set_target (chain->endpad, NULL);
|
|
chain->endpad->exposed = FALSE;
|
|
if (!hide) {
|
|
gst_object_unref (chain->endpad);
|
|
chain->endpad = NULL;
|
|
}
|
|
}
|
|
|
|
if (!hide && chain->current_pad) {
|
|
gst_object_unref (chain->current_pad);
|
|
chain->current_pad = NULL;
|
|
}
|
|
|
|
if (chain->pad) {
|
|
gst_object_unref (chain->pad);
|
|
chain->pad = NULL;
|
|
}
|
|
if (chain->start_caps) {
|
|
gst_caps_unref (chain->start_caps);
|
|
chain->start_caps = NULL;
|
|
}
|
|
|
|
if (chain->endcaps) {
|
|
gst_caps_unref (chain->endcaps);
|
|
chain->endcaps = NULL;
|
|
}
|
|
g_free (chain->deadend_details);
|
|
chain->deadend_details = NULL;
|
|
|
|
GST_DEBUG_OBJECT (chain->parsebin, "%s chain %p", (hide ? "Hidden" : "Freed"),
|
|
chain);
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
|
|
while (set_to_null) {
|
|
GstElement *element = set_to_null->data;
|
|
set_to_null = g_list_delete_link (set_to_null, set_to_null);
|
|
gst_element_set_state (element, GST_STATE_NULL);
|
|
gst_object_unref (element);
|
|
}
|
|
|
|
if (!hide) {
|
|
g_mutex_clear (&chain->lock);
|
|
g_slice_free (GstParseChain, chain);
|
|
}
|
|
}
|
|
|
|
/* gst_parse_chain_free:
|
|
*
|
|
* Completely frees and removes the chain and all
|
|
* child groups from ParseBin.
|
|
*
|
|
* MT-safe, don't hold the chain lock or any child chain's lock
|
|
* when calling this!
|
|
*/
|
|
static void
|
|
gst_parse_chain_free (GstParseChain * chain)
|
|
{
|
|
gst_parse_chain_free_internal (chain, FALSE);
|
|
}
|
|
|
|
/* gst_parse_chain_new:
|
|
*
|
|
* Creates a new parse chain and initializes it.
|
|
*
|
|
* It's up to the caller to add it to the list of child chains of
|
|
* a group!
|
|
*/
|
|
static GstParseChain *
|
|
gst_parse_chain_new (GstParseBin * parsebin, GstParseGroup * parent,
|
|
GstPad * pad, GstCaps * start_caps)
|
|
{
|
|
GstParseChain *chain = g_slice_new0 (GstParseChain);
|
|
|
|
GST_DEBUG_OBJECT (parsebin, "Creating new chain %p with parent group %p",
|
|
chain, parent);
|
|
|
|
chain->parsebin = parsebin;
|
|
chain->parent = parent;
|
|
g_mutex_init (&chain->lock);
|
|
chain->pad = gst_object_ref (pad);
|
|
if (start_caps)
|
|
chain->start_caps = gst_caps_ref (start_caps);
|
|
|
|
return chain;
|
|
}
|
|
|
|
/****
|
|
* GstParseGroup functions
|
|
****/
|
|
|
|
static void
|
|
gst_parse_group_free_internal (GstParseGroup * group, gboolean hide)
|
|
{
|
|
GList *l;
|
|
|
|
GST_DEBUG_OBJECT (group->parsebin, "%s group %p",
|
|
(hide ? "Hiding" : "Freeing"), group);
|
|
for (l = group->children; l; l = l->next) {
|
|
GstParseChain *chain = (GstParseChain *) l->data;
|
|
|
|
gst_parse_chain_free_internal (chain, hide);
|
|
if (!hide)
|
|
l->data = NULL;
|
|
}
|
|
if (!hide) {
|
|
g_list_free (group->children);
|
|
group->children = NULL;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (group->parsebin, "%s group %p", (hide ? "Hid" : "Freed"),
|
|
group);
|
|
if (!hide)
|
|
g_slice_free (GstParseGroup, group);
|
|
}
|
|
|
|
/* gst_parse_group_free:
|
|
*
|
|
* Completely frees and removes the parse 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_parse_group_free (GstParseGroup * group)
|
|
{
|
|
gst_parse_group_free_internal (group, FALSE);
|
|
}
|
|
|
|
/* gst_parse_group_hide:
|
|
*
|
|
* Hide the parse group only, this means that
|
|
* all child endpads are removed from ParseBin
|
|
* 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_parse_group_hide (GstParseGroup * group)
|
|
{
|
|
gst_parse_group_free_internal (group, TRUE);
|
|
}
|
|
|
|
/* gst_parse_chain_free_hidden_groups:
|
|
*
|
|
* Frees any parse groups that were hidden previously.
|
|
* This allows keeping memory use from ballooning when
|
|
* switching chains repeatedly.
|
|
*
|
|
* A new throwaway thread will be created to free the
|
|
* groups, so any delay does not block the setup of a
|
|
* new group.
|
|
*
|
|
* Not MT-safe, call with parent's chain lock!
|
|
*/
|
|
static void
|
|
gst_parse_chain_free_hidden_groups (GList * old_groups)
|
|
{
|
|
GList *l;
|
|
|
|
for (l = old_groups; l; l = l->next) {
|
|
GstParseGroup *group = l->data;
|
|
|
|
gst_parse_group_free (group);
|
|
}
|
|
g_list_free (old_groups);
|
|
}
|
|
|
|
static void
|
|
gst_parse_chain_start_free_hidden_groups_thread (GstParseChain * chain)
|
|
{
|
|
GThread *thread;
|
|
GError *error = NULL;
|
|
GList *old_groups;
|
|
GstParseBin *parsebin = chain->parsebin;
|
|
|
|
old_groups = chain->old_groups;
|
|
if (!old_groups)
|
|
return;
|
|
|
|
/* If we already have a thread running, wait for it to finish */
|
|
g_mutex_lock (&parsebin->cleanup_lock);
|
|
if (parsebin->cleanup_thread) {
|
|
g_thread_join (parsebin->cleanup_thread);
|
|
parsebin->cleanup_thread = NULL;
|
|
}
|
|
|
|
chain->old_groups = NULL;
|
|
thread = g_thread_try_new ("free-hidden-groups",
|
|
(GThreadFunc) gst_parse_chain_free_hidden_groups, old_groups, &error);
|
|
if (!thread || error) {
|
|
GST_ERROR ("Failed to start free-hidden-groups thread: %s",
|
|
error ? error->message : "unknown reason");
|
|
g_clear_error (&error);
|
|
chain->old_groups = old_groups;
|
|
g_mutex_unlock (&parsebin->cleanup_lock);
|
|
return;
|
|
}
|
|
|
|
parsebin->cleanup_thread = thread;
|
|
g_mutex_unlock (&parsebin->cleanup_lock);
|
|
|
|
GST_DEBUG_OBJECT (chain->parsebin, "Started free-hidden-groups thread");
|
|
}
|
|
|
|
/* gst_parse_group_new:
|
|
* @parsebin: Parent ParseBin
|
|
* @parent: Parent chain or %NULL
|
|
*
|
|
* Creates a new GstParseGroup. It is up to the caller to add it to the list
|
|
* of groups.
|
|
*/
|
|
static GstParseGroup *
|
|
gst_parse_group_new (GstParseBin * parsebin, GstParseChain * parent)
|
|
{
|
|
GstParseGroup *group = g_slice_new0 (GstParseGroup);
|
|
|
|
GST_DEBUG_OBJECT (parsebin, "Creating new group %p with parent chain %p",
|
|
group, parent);
|
|
|
|
group->parsebin = parsebin;
|
|
group->parent = parent;
|
|
|
|
return group;
|
|
}
|
|
|
|
/* gst_parse_group_is_complete:
|
|
*
|
|
* Checks if the group is complete, this means that
|
|
* a) no-more-pads happened
|
|
* b) all child chains are complete
|
|
*
|
|
* Not MT-safe, always call with ParseBin expose lock
|
|
*/
|
|
static gboolean
|
|
gst_parse_group_is_complete (GstParseGroup * group)
|
|
{
|
|
GList *l;
|
|
gboolean complete = TRUE;
|
|
|
|
if (!group->no_more_pads) {
|
|
complete = FALSE;
|
|
goto out;
|
|
}
|
|
|
|
for (l = group->children; l; l = l->next) {
|
|
GstParseChain *chain = l->data;
|
|
|
|
/* Any blocked chain requires we complete this group
|
|
* since everything is synchronous, we can't proceed otherwise */
|
|
if (chain->endpad && chain->endpad->blocked)
|
|
goto out;
|
|
|
|
if (!gst_parse_chain_is_complete (chain)) {
|
|
complete = FALSE;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
GST_DEBUG_OBJECT (group->parsebin, "Group %p is complete: %d", group,
|
|
complete);
|
|
return complete;
|
|
}
|
|
|
|
/* gst_parse_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
|
|
* c) The chain has gotten far enough to have plugged 1 parser at least.
|
|
*
|
|
* Not MT-safe, always call with ParseBin expose lock
|
|
*/
|
|
static gboolean
|
|
gst_parse_chain_is_complete (GstParseChain * chain)
|
|
{
|
|
gboolean complete = FALSE;
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
if (chain->parsebin->shutdown)
|
|
goto out;
|
|
|
|
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_parse_group_is_complete (chain->active_group)) {
|
|
complete = TRUE;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (chain->parsed) {
|
|
complete = TRUE;
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
GST_DEBUG_OBJECT (chain->parsebin, "Chain %p is complete: %d", chain,
|
|
complete);
|
|
return complete;
|
|
}
|
|
|
|
static void
|
|
chain_remove_old_groups (GstParseChain * chain)
|
|
{
|
|
GList *tmp;
|
|
|
|
/* First go in child */
|
|
if (chain->active_group) {
|
|
for (tmp = chain->active_group->children; tmp; tmp = tmp->next) {
|
|
GstParseChain *child = (GstParseChain *) tmp->data;
|
|
chain_remove_old_groups (child);
|
|
}
|
|
}
|
|
|
|
if (chain->old_groups) {
|
|
gst_parse_group_hide (chain->old_groups->data);
|
|
gst_parse_chain_start_free_hidden_groups_thread (chain);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
drain_and_switch_chains (GstParseChain * chain, GstParsePad * 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 (GstParseGroup * group, GstParsePad * drainpad,
|
|
gboolean * last_group, gboolean * drained, gboolean * switched)
|
|
{
|
|
gboolean handled = FALSE;
|
|
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 */
|
|
group->drained = TRUE;
|
|
for (tmp = group->children; tmp; tmp = tmp->next) {
|
|
GstParseChain *chain = (GstParseChain *) tmp->data;
|
|
gboolean subdrained = FALSE;
|
|
|
|
handled |=
|
|
drain_and_switch_chains (chain, drainpad, last_group, &subdrained,
|
|
switched);
|
|
if (!subdrained)
|
|
group->drained = FALSE;
|
|
}
|
|
|
|
beach:
|
|
GST_DEBUG ("group %p (last_group:%d, drained:%d, switched:%d, handled:%d)",
|
|
group, *last_group, group->drained, *switched, handled);
|
|
*drained = group->drained;
|
|
return handled;
|
|
}
|
|
|
|
static gboolean
|
|
drain_and_switch_chains (GstParseChain * chain, GstParsePad * drainpad,
|
|
gboolean * last_group, gboolean * drained, gboolean * switched)
|
|
{
|
|
gboolean handled = FALSE;
|
|
GstParseBin *parsebin = chain->parsebin;
|
|
|
|
GST_DEBUG ("Checking chain %p %s:%s (target pad %s:%s)",
|
|
chain, GST_DEBUG_PAD_NAME (chain->pad), GST_DEBUG_PAD_NAME (drainpad));
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
|
|
/* Definitely can't be in drained chains */
|
|
if (G_UNLIKELY (chain->drained)) {
|
|
goto beach;
|
|
}
|
|
|
|
if (chain->endpad) {
|
|
/* Check if we're reached the target endchain */
|
|
if (drainpad != NULL && chain == drainpad->chain) {
|
|
GST_DEBUG ("Found the target chain");
|
|
drainpad->drained = TRUE;
|
|
handled = TRUE;
|
|
}
|
|
|
|
chain->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 || drainpad == NULL) && subdrained && !*switched) {
|
|
if (chain->next_groups) {
|
|
/* Switch to next group, the actual removal of the current group will
|
|
* be done when the next one is activated */
|
|
GST_DEBUG_OBJECT (parsebin, "Moving current group %p to old groups",
|
|
chain->active_group);
|
|
chain->old_groups =
|
|
g_list_prepend (chain->old_groups, chain->active_group);
|
|
GST_DEBUG_OBJECT (parsebin, "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;
|
|
chain->drained = FALSE;
|
|
} else {
|
|
GST_DEBUG ("Group %p was the last in chain %p", chain->active_group,
|
|
chain);
|
|
chain->drained = TRUE;
|
|
/* We're drained ! */
|
|
}
|
|
} else {
|
|
if (subdrained && !chain->next_groups)
|
|
*drained = TRUE;
|
|
}
|
|
}
|
|
|
|
beach:
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
|
|
GST_DEBUG
|
|
("Chain %p (%s:%s handled:%d, last_group:%d, drained:%d, switched:%d, deadend:%d)",
|
|
chain, GST_DEBUG_PAD_NAME (chain->pad), handled, *last_group,
|
|
chain->drained, *switched, chain->deadend);
|
|
|
|
*drained = chain->drained;
|
|
|
|
return handled;
|
|
}
|
|
|
|
/* check if the group is drained, meaning all pads have seen an EOS
|
|
* event. */
|
|
static gboolean
|
|
gst_parse_pad_handle_eos (GstParsePad * pad)
|
|
{
|
|
gboolean last_group = TRUE;
|
|
gboolean switched = FALSE;
|
|
gboolean drained = FALSE;
|
|
GstParseChain *chain = pad->chain;
|
|
GstParseBin *parsebin = chain->parsebin;
|
|
|
|
GST_LOG_OBJECT (parsebin, "pad %p", pad);
|
|
EXPOSE_LOCK (parsebin);
|
|
if (parsebin->parse_chain) {
|
|
drain_and_switch_chains (parsebin->parse_chain, pad, &last_group, &drained,
|
|
&switched);
|
|
|
|
GST_LOG_OBJECT (parsebin, "drained:%d switched:%d", drained, switched);
|
|
if (switched) {
|
|
/* If we resulted in a group switch, expose what's needed */
|
|
if (gst_parse_chain_is_complete (parsebin->parse_chain))
|
|
gst_parse_bin_expose (parsebin);
|
|
}
|
|
|
|
if (drained) {
|
|
GST_DEBUG_OBJECT (parsebin, "We are fully drained, emitting signal");
|
|
g_signal_emit (parsebin, gst_parse_bin_signals[SIGNAL_DRAINED], 0, NULL);
|
|
}
|
|
|
|
}
|
|
EXPOSE_UNLOCK (parsebin);
|
|
|
|
return last_group;
|
|
}
|
|
|
|
/* gst_parse_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_parse_group_is_drained (GstParseGroup * group)
|
|
{
|
|
GList *l;
|
|
gboolean drained = TRUE;
|
|
|
|
if (group->drained) {
|
|
drained = TRUE;
|
|
goto out;
|
|
}
|
|
|
|
for (l = group->children; l; l = l->next) {
|
|
GstParseChain *chain = l->data;
|
|
|
|
CHAIN_MUTEX_LOCK (chain);
|
|
if (!gst_parse_chain_is_drained (chain))
|
|
drained = FALSE;
|
|
CHAIN_MUTEX_UNLOCK (chain);
|
|
if (!drained)
|
|
goto out;
|
|
}
|
|
group->drained = drained;
|
|
|
|
out:
|
|
GST_DEBUG_OBJECT (group->parsebin, "Group %p is drained: %d", group, drained);
|
|
return drained;
|
|
}
|
|
|
|
/* gst_parse_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_parse_chain_is_drained (GstParseChain * 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_parse_group_is_drained (chain->active_group)
|
|
&& !chain->next_groups) {
|
|
drained = TRUE;
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
GST_DEBUG_OBJECT (chain->parsebin, "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 (GstParsePad * da, GstParsePad * db)
|
|
{
|
|
gint va, vb;
|
|
const gchar *namea, *nameb;
|
|
gchar *ida, *idb;
|
|
gint ret;
|
|
GstCaps *capsa, *capsb;
|
|
|
|
capsa = get_pad_caps (GST_PAD_CAST (da));
|
|
capsb = get_pad_caps (GST_PAD_CAST (db));
|
|
|
|
if (gst_caps_get_size (capsa) == 0 || gst_caps_get_size (capsb) == 0) {
|
|
if (gst_caps_is_any (capsa))
|
|
va = 6;
|
|
if (gst_caps_is_empty (capsa))
|
|
va = 7;
|
|
else
|
|
va = 0;
|
|
|
|
if (gst_caps_is_any (capsb))
|
|
vb = 6;
|
|
if (gst_caps_is_empty (capsb))
|
|
vb = 7;
|
|
else
|
|
vb = 0;
|
|
} else {
|
|
GstStructure *sa, *sb;
|
|
|
|
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, "image/"))
|
|
va = 2;
|
|
else if (g_strrstr (namea, "audio/x-raw"))
|
|
va = 3;
|
|
else if (g_strrstr (namea, "audio/"))
|
|
va = 4;
|
|
else
|
|
va = 5;
|
|
|
|
if (g_strrstr (nameb, "video/x-raw"))
|
|
vb = 0;
|
|
else if (g_strrstr (nameb, "video/"))
|
|
vb = 1;
|
|
else if (g_strrstr (nameb, "image/"))
|
|
vb = 2;
|
|
else if (g_strrstr (nameb, "audio/x-raw"))
|
|
vb = 3;
|
|
else if (g_strrstr (nameb, "audio/"))
|
|
vb = 4;
|
|
else
|
|
vb = 5;
|
|
}
|
|
|
|
gst_caps_unref (capsa);
|
|
gst_caps_unref (capsb);
|
|
|
|
if (va != vb)
|
|
return va - vb;
|
|
|
|
/* if otherwise the same, sort by stream-id */
|
|
ida = gst_pad_get_stream_id (GST_PAD_CAST (da));
|
|
idb = gst_pad_get_stream_id (GST_PAD_CAST (db));
|
|
ret = (ida) ? ((idb) ? strcmp (ida, idb) : -1) : 1;
|
|
g_free (ida);
|
|
g_free (idb);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
debug_sticky_event (GstPad * pad, GstEvent ** event, gpointer user_data)
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "sticky event %s (%p)", GST_EVENT_TYPE_NAME (*event),
|
|
*event);
|
|
return TRUE;
|
|
}
|
|
|
|
/* Must only be called if the toplevel chain is complete and blocked! */
|
|
/* Not MT-safe, call with ParseBin expose lock! */
|
|
static gboolean
|
|
gst_parse_bin_expose (GstParseBin * parsebin)
|
|
{
|
|
GList *tmp, *endpads;
|
|
gboolean missing_plugin;
|
|
GString *missing_plugin_details;
|
|
gboolean already_exposed;
|
|
gboolean last_group;
|
|
gboolean uncollected_streams;
|
|
GstStreamCollection *fallback_collection = NULL;
|
|
|
|
retry:
|
|
endpads = NULL;
|
|
missing_plugin = FALSE;
|
|
already_exposed = TRUE;
|
|
last_group = TRUE;
|
|
|
|
missing_plugin_details = g_string_new ("");
|
|
|
|
GST_DEBUG_OBJECT (parsebin, "Exposing currently active chains/groups");
|
|
|
|
/* Don't expose if we're currently shutting down */
|
|
DYN_LOCK (parsebin);
|
|
if (G_UNLIKELY (parsebin->shutdown)) {
|
|
GST_WARNING_OBJECT (parsebin,
|
|
"Currently, shutting down, aborting exposing");
|
|
DYN_UNLOCK (parsebin);
|
|
return FALSE;
|
|
}
|
|
DYN_UNLOCK (parsebin);
|
|
|
|
/* Get the pads that we're going to expose and mark things as exposed */
|
|
uncollected_streams = FALSE;
|
|
CHAIN_MUTEX_LOCK (parsebin->parse_chain);
|
|
if (!gst_parse_chain_expose (parsebin->parse_chain, &endpads, &missing_plugin,
|
|
missing_plugin_details, &last_group, &uncollected_streams)) {
|
|
g_list_free_full (endpads, (GDestroyNotify) gst_object_unref);
|
|
g_string_free (missing_plugin_details, TRUE);
|
|
GST_ERROR_OBJECT (parsebin, "Broken chain/group tree");
|
|
CHAIN_MUTEX_UNLOCK (parsebin->parse_chain);
|
|
return FALSE;
|
|
}
|
|
CHAIN_MUTEX_UNLOCK (parsebin->parse_chain);
|
|
if (endpads == NULL) {
|
|
if (missing_plugin) {
|
|
if (missing_plugin_details->len > 0) {
|
|
gchar *details = g_string_free (missing_plugin_details, FALSE);
|
|
GST_ELEMENT_ERROR (parsebin, CORE, MISSING_PLUGIN, (NULL),
|
|
("no suitable plugins found:\n%s", details));
|
|
g_free (details);
|
|
} else {
|
|
g_string_free (missing_plugin_details, TRUE);
|
|
GST_ELEMENT_ERROR (parsebin, CORE, MISSING_PLUGIN, (NULL),
|
|
("no suitable plugins found"));
|
|
}
|
|
} else {
|
|
/* in this case, the stream ended without buffers,
|
|
* just post a warning */
|
|
g_string_free (missing_plugin_details, TRUE);
|
|
|
|
GST_WARNING_OBJECT (parsebin, "All streams finished without buffers. "
|
|
"Last group: %d", last_group);
|
|
if (last_group) {
|
|
GST_ELEMENT_ERROR (parsebin, STREAM, FAILED, (NULL),
|
|
("all streams without buffers"));
|
|
} else {
|
|
gboolean switched = FALSE;
|
|
gboolean drained = FALSE;
|
|
|
|
drain_and_switch_chains (parsebin->parse_chain, NULL, &last_group,
|
|
&drained, &switched);
|
|
GST_ELEMENT_WARNING (parsebin, STREAM, FAILED, (NULL),
|
|
("all streams without buffers"));
|
|
if (switched) {
|
|
if (gst_parse_chain_is_complete (parsebin->parse_chain))
|
|
goto retry;
|
|
else
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
if (uncollected_streams) {
|
|
/* FIXME: Collect and use a stream id from the top chain as
|
|
* upstream ID? */
|
|
fallback_collection = gst_stream_collection_new (NULL);
|
|
|
|
build_fallback_collection (parsebin->parse_chain, fallback_collection);
|
|
|
|
gst_element_post_message (GST_ELEMENT (parsebin),
|
|
gst_message_new_stream_collection (GST_OBJECT (parsebin),
|
|
fallback_collection));
|
|
}
|
|
|
|
g_string_free (missing_plugin_details, TRUE);
|
|
|
|
/* Check if this was called when everything was exposed already,
|
|
* and see if we need to post a new fallback collection */
|
|
for (tmp = endpads; tmp && already_exposed; tmp = tmp->next) {
|
|
GstParsePad *parsepad = tmp->data;
|
|
|
|
already_exposed &= parsepad->exposed;
|
|
}
|
|
if (already_exposed) {
|
|
GST_DEBUG_OBJECT (parsebin, "Everything was exposed already!");
|
|
if (fallback_collection)
|
|
gst_object_unref (fallback_collection);
|
|
g_list_free_full (endpads, (GDestroyNotify) gst_object_unref);
|
|
return TRUE;
|
|
}
|
|
|
|
/* Set all already exposed pads to blocked */
|
|
for (tmp = endpads; tmp; tmp = tmp->next) {
|
|
GstParsePad *parsepad = tmp->data;
|
|
|
|
if (parsepad->exposed) {
|
|
GST_DEBUG_OBJECT (parsepad, "blocking exposed pad");
|
|
gst_parse_pad_set_blocked (parsepad, TRUE);
|
|
}
|
|
}
|
|
|
|
/* re-order pads : video, then audio, then others */
|
|
endpads = g_list_sort (endpads, (GCompareFunc) sort_end_pads);
|
|
|
|
/* Don't expose if we're currently shutting down */
|
|
DYN_LOCK (parsebin);
|
|
if (G_UNLIKELY (parsebin->shutdown)) {
|
|
GST_WARNING_OBJECT (parsebin,
|
|
"Currently, shutting down, aborting exposing");
|
|
DYN_UNLOCK (parsebin);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Expose pads */
|
|
for (tmp = endpads; tmp; tmp = tmp->next) {
|
|
GstParsePad *parsepad = (GstParsePad *) tmp->data;
|
|
gchar *padname;
|
|
|
|
//if (!parsepad->blocked)
|
|
//continue;
|
|
|
|
/* 1. rewrite name */
|
|
padname = g_strdup_printf ("src_%u", parsebin->nbpads);
|
|
parsebin->nbpads++;
|
|
GST_DEBUG_OBJECT (parsebin, "About to expose parsepad %s as %s",
|
|
GST_OBJECT_NAME (parsepad), padname);
|
|
gst_object_set_name (GST_OBJECT (parsepad), padname);
|
|
g_free (padname);
|
|
|
|
gst_pad_sticky_events_foreach (GST_PAD_CAST (parsepad), debug_sticky_event,
|
|
parsepad);
|
|
|
|
/* 2. activate and add */
|
|
if (!parsepad->exposed) {
|
|
parsepad->exposed = TRUE;
|
|
if (!gst_element_add_pad (GST_ELEMENT (parsebin),
|
|
GST_PAD_CAST (parsepad))) {
|
|
/* not really fatal, we can try to add the other pads */
|
|
g_warning ("error adding pad to ParseBin");
|
|
parsepad->exposed = FALSE;
|
|
continue;
|
|
}
|
|
#if 0
|
|
/* HACK: Send an empty gap event to push sticky events */
|
|
gst_pad_push_event (GST_PAD (parsepad),
|
|
gst_event_new_gap (0, GST_CLOCK_TIME_NONE));
|
|
#endif
|
|
}
|
|
|
|
GST_INFO_OBJECT (parsepad, "added new parsed pad");
|
|
}
|
|
|
|
DYN_UNLOCK (parsebin);
|
|
|
|
/* Unblock internal pads. The application should have connected stuff now
|
|
* so that streaming can continue. */
|
|
for (tmp = endpads; tmp; tmp = tmp->next) {
|
|
GstParsePad *parsepad = (GstParsePad *) tmp->data;
|
|
|
|
if (parsepad->exposed) {
|
|
GST_DEBUG_OBJECT (parsepad, "unblocking");
|
|
gst_parse_pad_unblock (parsepad);
|
|
GST_DEBUG_OBJECT (parsepad, "unblocked");
|
|
}
|
|
|
|
/* Send stream-collection events for any pads that don't have them,
|
|
* and post a stream-collection onto the bus */
|
|
if (parsepad->active_collection == NULL && fallback_collection) {
|
|
gst_pad_push_event (GST_PAD (parsepad),
|
|
gst_event_new_stream_collection (fallback_collection));
|
|
}
|
|
gst_object_unref (parsepad);
|
|
}
|
|
g_list_free (endpads);
|
|
|
|
if (fallback_collection)
|
|
gst_object_unref (fallback_collection);
|
|
|
|
/* Remove old groups */
|
|
chain_remove_old_groups (parsebin->parse_chain);
|
|
|
|
GST_DEBUG_OBJECT (parsebin, "Exposed everything");
|
|
return TRUE;
|
|
}
|
|
|
|
/* gst_parse_chain_expose:
|
|
*
|
|
* Check if the chain can be exposed and add all endpads
|
|
* to the endpads list.
|
|
*
|
|
* Not MT-safe, call with ParseBin expose lock! *
|
|
*/
|
|
static gboolean
|
|
gst_parse_chain_expose (GstParseChain * chain, GList ** endpads,
|
|
gboolean * missing_plugin, GString * missing_plugin_details,
|
|
gboolean * last_group, gboolean * uncollected_streams)
|
|
{
|
|
GstParseGroup *group;
|
|
GList *l;
|
|
gboolean ret = FALSE;
|
|
|
|
if (chain->deadend) {
|
|
if (chain->endcaps) {
|
|
if (chain->deadend_details) {
|
|
g_string_append (missing_plugin_details, chain->deadend_details);
|
|
g_string_append_c (missing_plugin_details, '\n');
|
|
} else {
|
|
gchar *desc = gst_pb_utils_get_codec_description (chain->endcaps);
|
|
gchar *caps_str = gst_caps_to_string (chain->endcaps);
|
|
g_string_append_printf (missing_plugin_details,
|
|
"Missing parser: %s (%s)\n", desc, caps_str);
|
|
g_free (caps_str);
|
|
g_free (desc);
|
|
}
|
|
*missing_plugin = TRUE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
if (chain->endpad == NULL && chain->parsed && chain->pending_pads) {
|
|
/* The chain has a pending pad from a parser, let's just
|
|
* expose that now as the endpad */
|
|
GList *cur = chain->pending_pads;
|
|
GstPendingPad *ppad = (GstPendingPad *) (cur->data);
|
|
GstPad *endpad = gst_object_ref (ppad->pad);
|
|
GstElement *elem =
|
|
GST_ELEMENT (gst_object_get_parent (GST_OBJECT (endpad)));
|
|
|
|
chain->pending_pads = g_list_remove (chain->pending_pads, ppad);
|
|
|
|
gst_pending_pad_free (ppad);
|
|
|
|
GST_DEBUG_OBJECT (chain->parsebin,
|
|
"Exposing pad %" GST_PTR_FORMAT " with incomplete caps "
|
|
"because it's parsed", endpad);
|
|
|
|
expose_pad (chain->parsebin, elem, chain->current_pad, endpad, NULL, chain);
|
|
gst_object_unref (endpad);
|
|
gst_object_unref (elem);
|
|
}
|
|
|
|
if (chain->endpad) {
|
|
GstParsePad *p = chain->endpad;
|
|
|
|
if (p->active_stream && p->active_collection == NULL
|
|
&& !p->in_a_fallback_collection)
|
|
*uncollected_streams = TRUE;
|
|
|
|
*endpads = g_list_prepend (*endpads, gst_object_ref (p));
|
|
return TRUE;
|
|
}
|
|
|
|
if (chain->next_groups)
|
|
*last_group = FALSE;
|
|
|
|
group = chain->active_group;
|
|
if (!group) {
|
|
GstParsePad *p = chain->current_pad;
|
|
|
|
if (!p)
|
|
return FALSE;
|
|
|
|
if (p->active_stream && p->active_collection == NULL
|
|
&& !p->in_a_fallback_collection)
|
|
*uncollected_streams = TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
for (l = group->children; l; l = l->next) {
|
|
GstParseChain *childchain = l->data;
|
|
|
|
CHAIN_MUTEX_LOCK (childchain);
|
|
ret |= gst_parse_chain_expose (childchain, endpads, missing_plugin,
|
|
missing_plugin_details, last_group, uncollected_streams);
|
|
CHAIN_MUTEX_UNLOCK (childchain);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
build_fallback_collection (GstParseChain * chain,
|
|
GstStreamCollection * collection)
|
|
{
|
|
GstParseGroup *group = chain->active_group;
|
|
GList *l;
|
|
|
|
/* If it's an end pad, or a not-finished chain that's
|
|
* not a group, put it in the collection */
|
|
if (chain->endpad || (chain->current_pad && group == NULL)) {
|
|
GstParsePad *p = chain->current_pad;
|
|
|
|
if (p->active_stream != NULL && p->active_collection == NULL) {
|
|
GST_DEBUG_OBJECT (p, "Adding stream to fallback collection");
|
|
if (G_UNLIKELY (gst_stream_get_stream_type (p->active_stream) ==
|
|
GST_STREAM_TYPE_UNKNOWN)) {
|
|
GstCaps *caps;
|
|
caps = get_pad_caps (GST_PAD_CAST (p));
|
|
|
|
if (caps) {
|
|
GstStreamType type = guess_stream_type_from_caps (caps);
|
|
if (type != GST_STREAM_TYPE_UNKNOWN) {
|
|
gst_stream_set_stream_type (p->active_stream, type);
|
|
gst_stream_set_caps (p->active_stream, caps);
|
|
}
|
|
gst_caps_unref (caps);
|
|
}
|
|
}
|
|
gst_stream_collection_add_stream (collection,
|
|
gst_object_ref (p->active_stream));
|
|
p->in_a_fallback_collection = TRUE;
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (!group)
|
|
return;
|
|
|
|
/* we used g_list_prepend when adding children, so iterate from last
|
|
* to first to maintain the original order they were added in */
|
|
for (l = g_list_last (group->children); l != NULL; l = l->prev) {
|
|
GstParseChain *childchain = l->data;
|
|
|
|
build_fallback_collection (childchain, collection);
|
|
}
|
|
}
|
|
|
|
/*************************
|
|
* GstParsePad functions
|
|
*************************/
|
|
|
|
static void gst_parse_pad_dispose (GObject * object);
|
|
|
|
static void
|
|
gst_parse_pad_class_init (GstParsePadClass * klass)
|
|
{
|
|
GObjectClass *gobject_klass;
|
|
|
|
gobject_klass = (GObjectClass *) klass;
|
|
|
|
gobject_klass->dispose = gst_parse_pad_dispose;
|
|
}
|
|
|
|
static void
|
|
gst_parse_pad_init (GstParsePad * pad)
|
|
{
|
|
pad->chain = NULL;
|
|
pad->blocked = FALSE;
|
|
pad->exposed = FALSE;
|
|
pad->drained = FALSE;
|
|
gst_object_ref_sink (pad);
|
|
}
|
|
|
|
static void
|
|
gst_parse_pad_dispose (GObject * object)
|
|
{
|
|
GstParsePad *parsepad = (GstParsePad *) (object);
|
|
parse_pad_set_target (parsepad, NULL);
|
|
|
|
gst_object_replace ((GstObject **) & parsepad->active_collection, NULL);
|
|
gst_object_replace ((GstObject **) & parsepad->active_stream, NULL);
|
|
|
|
G_OBJECT_CLASS (gst_parse_pad_parent_class)->dispose (object);
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
source_pad_blocked_cb (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
|
|
{
|
|
GstParsePad *parsepad = user_data;
|
|
GstParseChain *chain;
|
|
GstParseBin *parsebin;
|
|
GstPadProbeReturn ret = GST_PAD_PROBE_OK;
|
|
|
|
if (GST_PAD_PROBE_INFO_TYPE (info) & GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) {
|
|
GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
|
|
|
|
GST_LOG_OBJECT (pad, "Seeing event '%s'", GST_EVENT_TYPE_NAME (event));
|
|
|
|
if (!GST_EVENT_IS_SERIALIZED (event)) {
|
|
/* do not block on sticky or out of band events otherwise the allocation query
|
|
from demuxer might block the loop thread */
|
|
GST_LOG_OBJECT (pad, "Letting OOB event through");
|
|
return GST_PAD_PROBE_PASS;
|
|
}
|
|
|
|
if (GST_EVENT_IS_STICKY (event) && GST_EVENT_TYPE (event) != GST_EVENT_EOS) {
|
|
GstPad *peer;
|
|
|
|
/* manually push sticky events to ghost pad to avoid exposing pads
|
|
* that don't have the sticky events. Handle EOS separately as we
|
|
* want to block the pad on it if we didn't get any buffers before
|
|
* EOS and expose the pad then. */
|
|
peer = gst_pad_get_peer (pad);
|
|
gst_pad_send_event (peer, event);
|
|
gst_object_unref (peer);
|
|
GST_LOG_OBJECT (pad, "Manually pushed sticky event through");
|
|
ret = GST_PAD_PROBE_HANDLED;
|
|
goto done;
|
|
}
|
|
} else if (GST_PAD_PROBE_INFO_TYPE (info) &
|
|
GST_PAD_PROBE_TYPE_QUERY_DOWNSTREAM) {
|
|
GstQuery *query = GST_PAD_PROBE_INFO_QUERY (info);
|
|
|
|
if (!GST_QUERY_IS_SERIALIZED (query)) {
|
|
/* do not block on non-serialized queries */
|
|
GST_LOG_OBJECT (pad, "Letting non-serialized query through");
|
|
return GST_PAD_PROBE_PASS;
|
|
}
|
|
if (!gst_pad_has_current_caps (pad)) {
|
|
/* do not block on allocation queries before we have caps,
|
|
* this would deadlock because we are doing no autoplugging
|
|
* without caps.
|
|
* TODO: Try to do autoplugging based on the query caps
|
|
*/
|
|
GST_LOG_OBJECT (pad, "Letting serialized query before caps through");
|
|
return GST_PAD_PROBE_PASS;
|
|
}
|
|
}
|
|
chain = parsepad->chain;
|
|
parsebin = chain->parsebin;
|
|
|
|
GST_LOG_OBJECT (parsepad, "blocked: parsepad->chain:%p", chain);
|
|
|
|
parsepad->blocked = TRUE;
|
|
|
|
EXPOSE_LOCK (parsebin);
|
|
if (parsebin->parse_chain) {
|
|
if (!gst_parse_bin_expose (parsebin))
|
|
GST_WARNING_OBJECT (parsebin, "Couldn't expose group");
|
|
}
|
|
EXPOSE_UNLOCK (parsebin);
|
|
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
/* FIXME: We can probably do some cleverer things, and maybe move this into
|
|
* pbutils. Ideas:
|
|
* if there are tags look if it's got an AUDIO_CODEC VIDEO_CODEC CONTAINER_FORMAT tag
|
|
* Look at the factory klass designation of parsers in the chain
|
|
* Consider demuxer pad names as well, sometimes they give the type away
|
|
*/
|
|
static GstStreamType
|
|
guess_stream_type_from_caps (GstCaps * caps)
|
|
{
|
|
GstStructure *s;
|
|
const gchar *name;
|
|
|
|
if (gst_caps_get_size (caps) < 1)
|
|
return GST_STREAM_TYPE_UNKNOWN;
|
|
|
|
s = gst_caps_get_structure (caps, 0);
|
|
name = gst_structure_get_name (s);
|
|
|
|
if (g_str_has_prefix (name, "video/") || g_str_has_prefix (name, "image/"))
|
|
return GST_STREAM_TYPE_VIDEO;
|
|
if (g_str_has_prefix (name, "audio/"))
|
|
return GST_STREAM_TYPE_AUDIO;
|
|
if (g_str_has_prefix (name, "text/") ||
|
|
g_str_has_prefix (name, "subpicture/") ||
|
|
g_str_has_prefix (name, "subtitle/") ||
|
|
g_str_has_prefix (name, "closedcaption/"))
|
|
return GST_STREAM_TYPE_TEXT;
|
|
|
|
return GST_STREAM_TYPE_UNKNOWN;
|
|
}
|
|
|
|
static void
|
|
gst_parse_pad_update_caps (GstParsePad * parsepad, GstCaps * caps)
|
|
{
|
|
if (caps && parsepad->active_stream) {
|
|
GST_DEBUG_OBJECT (parsepad, "Storing caps %" GST_PTR_FORMAT
|
|
" on stream %" GST_PTR_FORMAT, caps, parsepad->active_stream);
|
|
|
|
if (gst_caps_is_fixed (caps))
|
|
gst_stream_set_caps (parsepad->active_stream, caps);
|
|
/* intuit a type */
|
|
if (gst_stream_get_stream_type (parsepad->active_stream) ==
|
|
GST_STREAM_TYPE_UNKNOWN) {
|
|
GstStreamType new_type = guess_stream_type_from_caps (caps);
|
|
if (new_type != GST_STREAM_TYPE_UNKNOWN)
|
|
gst_stream_set_stream_type (parsepad->active_stream, new_type);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_parse_pad_update_tags (GstParsePad * parsepad, GstTagList * tags)
|
|
{
|
|
if (tags && gst_tag_list_get_scope (tags) == GST_TAG_SCOPE_STREAM
|
|
&& parsepad->active_stream) {
|
|
GST_DEBUG_OBJECT (parsepad,
|
|
"Storing new tags %" GST_PTR_FORMAT " on stream %" GST_PTR_FORMAT, tags,
|
|
parsepad->active_stream);
|
|
gst_stream_set_tags (parsepad->active_stream, tags);
|
|
}
|
|
}
|
|
|
|
static GstEvent *
|
|
gst_parse_pad_stream_start_event (GstParsePad * parsepad, GstEvent * event)
|
|
{
|
|
GstStream *stream = NULL;
|
|
const gchar *stream_id = NULL;
|
|
gboolean repeat_event = FALSE;
|
|
GstStreamFlags streamflags;
|
|
|
|
gst_event_parse_stream_start (event, &stream_id);
|
|
gst_event_parse_stream_flags (event, &streamflags);
|
|
|
|
if (parsepad->active_stream != NULL &&
|
|
g_str_equal (parsepad->active_stream->stream_id, stream_id))
|
|
repeat_event = TRUE;
|
|
else {
|
|
/* A new stream requires a new collection event, or else
|
|
* we'll place it in a fallback collection later */
|
|
gst_object_replace ((GstObject **) & parsepad->active_collection, NULL);
|
|
parsepad->in_a_fallback_collection = FALSE;
|
|
}
|
|
|
|
gst_event_parse_stream (event, &stream);
|
|
if (stream == NULL) {
|
|
GstCaps *caps = gst_pad_get_current_caps (GST_PAD_CAST (parsepad));
|
|
if (caps == NULL) {
|
|
/* Try and get caps from the parsepad peer */
|
|
GstPad *peer = gst_ghost_pad_get_target (GST_GHOST_PAD (parsepad));
|
|
caps = gst_pad_get_current_caps (peer);
|
|
gst_object_unref (peer);
|
|
}
|
|
if (caps == NULL && parsepad->chain && parsepad->chain->start_caps) {
|
|
/* Still no caps, use the chain start caps */
|
|
caps = gst_caps_ref (parsepad->chain->start_caps);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (parsepad,
|
|
"Saw stream_start with no GstStream. Adding one. Caps %"
|
|
GST_PTR_FORMAT, caps);
|
|
|
|
if (repeat_event) {
|
|
GST_LOG_OBJECT (parsepad, "Using previously created GstStream");
|
|
stream = gst_object_ref (parsepad->active_stream);
|
|
} else {
|
|
GST_LOG_OBJECT (parsepad, "Creating unknown GstStream");
|
|
stream =
|
|
gst_stream_new (stream_id, NULL, GST_STREAM_TYPE_UNKNOWN,
|
|
streamflags);
|
|
gst_object_replace ((GstObject **) & parsepad->active_stream,
|
|
(GstObject *) stream);
|
|
}
|
|
if (caps) {
|
|
gst_parse_pad_update_caps (parsepad, caps);
|
|
gst_caps_unref (caps);
|
|
}
|
|
|
|
event = gst_event_make_writable (event);
|
|
gst_event_set_stream (event, stream);
|
|
}
|
|
gst_object_unref (stream);
|
|
GST_LOG_OBJECT (parsepad, "Saw stream %s (GstStream %p)",
|
|
stream->stream_id, stream);
|
|
|
|
return event;
|
|
}
|
|
|
|
static void
|
|
gst_parse_pad_update_stream_collection (GstParsePad * parsepad,
|
|
GstStreamCollection * collection)
|
|
{
|
|
GST_LOG_OBJECT (parsepad, "Got new stream collection %p", collection);
|
|
gst_object_replace ((GstObject **) & parsepad->active_collection,
|
|
(GstObject *) collection);
|
|
parsepad->in_a_fallback_collection = FALSE;
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
gst_parse_pad_event (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
|
|
{
|
|
GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
|
|
GstObject *parent = gst_pad_get_parent (pad);
|
|
GstParsePad *parsepad = GST_PARSE_PAD (parent);
|
|
gboolean forwardit = TRUE;
|
|
|
|
GST_LOG_OBJECT (pad, "%s parsepad:%p", GST_EVENT_TYPE_NAME (event), parsepad);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CAPS:{
|
|
GstCaps *caps = NULL;
|
|
gst_event_parse_caps (event, &caps);
|
|
gst_parse_pad_update_caps (parsepad, caps);
|
|
break;
|
|
}
|
|
case GST_EVENT_TAG:{
|
|
GstTagList *tags;
|
|
gst_event_parse_tag (event, &tags);
|
|
gst_parse_pad_update_tags (parsepad, tags);
|
|
break;
|
|
}
|
|
case GST_EVENT_STREAM_START:{
|
|
GST_PAD_PROBE_INFO_DATA (info) =
|
|
gst_parse_pad_stream_start_event (parsepad, event);
|
|
break;
|
|
}
|
|
case GST_EVENT_STREAM_COLLECTION:{
|
|
GstStreamCollection *collection = NULL;
|
|
gst_event_parse_stream_collection (event, &collection);
|
|
gst_parse_pad_update_stream_collection (parsepad, collection);
|
|
gst_element_post_message (GST_ELEMENT (parsepad->parsebin),
|
|
gst_message_new_stream_collection (GST_OBJECT (parsepad->parsebin),
|
|
collection));
|
|
break;
|
|
}
|
|
case 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. */
|
|
forwardit = gst_parse_pad_handle_eos (parsepad);
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
gst_object_unref (parent);
|
|
if (forwardit)
|
|
return GST_PAD_PROBE_OK;
|
|
else
|
|
return GST_PAD_PROBE_DROP;
|
|
}
|
|
|
|
static void
|
|
gst_parse_pad_set_blocked (GstParsePad * parsepad, gboolean blocked)
|
|
{
|
|
GstParseBin *parsebin = parsepad->parsebin;
|
|
GstPad *opad;
|
|
|
|
DYN_LOCK (parsebin);
|
|
|
|
GST_DEBUG_OBJECT (parsepad, "blocking pad: %d", blocked);
|
|
|
|
opad = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (parsepad));
|
|
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 || !parsebin->shutdown) {
|
|
if (blocked) {
|
|
if (parsepad->block_id == 0)
|
|
parsepad->block_id =
|
|
gst_pad_add_probe (opad,
|
|
GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM |
|
|
GST_PAD_PROBE_TYPE_QUERY_DOWNSTREAM, source_pad_blocked_cb,
|
|
gst_object_ref (parsepad), (GDestroyNotify) gst_object_unref);
|
|
} else {
|
|
if (parsepad->block_id != 0) {
|
|
gst_pad_remove_probe (opad, parsepad->block_id);
|
|
parsepad->block_id = 0;
|
|
}
|
|
parsepad->blocked = FALSE;
|
|
}
|
|
}
|
|
|
|
if (blocked) {
|
|
if (parsebin->shutdown) {
|
|
/* deactivate to force flushing state to prevent NOT_LINKED errors */
|
|
gst_pad_set_active (GST_PAD_CAST (parsepad), 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 (parsepad);
|
|
parsebin->blocked_pads =
|
|
g_list_prepend (parsebin->blocked_pads, parsepad);
|
|
}
|
|
} else {
|
|
GList *l;
|
|
|
|
if ((l = g_list_find (parsebin->blocked_pads, parsepad))) {
|
|
gst_object_unref (parsepad);
|
|
parsebin->blocked_pads = g_list_delete_link (parsebin->blocked_pads, l);
|
|
}
|
|
}
|
|
gst_object_unref (opad);
|
|
out:
|
|
DYN_UNLOCK (parsebin);
|
|
}
|
|
|
|
static void
|
|
gst_parse_pad_activate (GstParsePad * parsepad, GstParseChain * chain)
|
|
{
|
|
g_return_if_fail (chain != NULL);
|
|
|
|
parsepad->chain = chain;
|
|
gst_pad_set_active (GST_PAD_CAST (parsepad), TRUE);
|
|
gst_parse_pad_set_blocked (parsepad, TRUE);
|
|
}
|
|
|
|
static void
|
|
gst_parse_pad_unblock (GstParsePad * parsepad)
|
|
{
|
|
gst_parse_pad_set_blocked (parsepad, FALSE);
|
|
}
|
|
|
|
static gboolean
|
|
gst_parse_pad_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
GstParsePad *parsepad = GST_PARSE_PAD (parent);
|
|
gboolean ret = FALSE;
|
|
|
|
CHAIN_MUTEX_LOCK (parsepad->chain);
|
|
if (!parsepad->exposed && !parsepad->parsebin->shutdown
|
|
&& !parsepad->chain->deadend && parsepad->chain->elements) {
|
|
GstParseElement *pelem = parsepad->chain->elements->data;
|
|
|
|
ret = FALSE;
|
|
GST_DEBUG_OBJECT (parsepad->parsebin,
|
|
"calling autoplug-query for %s (element %s): %" GST_PTR_FORMAT,
|
|
GST_PAD_NAME (parsepad), GST_ELEMENT_NAME (pelem->element), query);
|
|
g_signal_emit (G_OBJECT (parsepad->parsebin),
|
|
gst_parse_bin_signals[SIGNAL_AUTOPLUG_QUERY], 0, parsepad,
|
|
pelem->element, query, &ret);
|
|
|
|
if (ret)
|
|
GST_DEBUG_OBJECT (parsepad->parsebin,
|
|
"autoplug-query returned %d: %" GST_PTR_FORMAT, ret, query);
|
|
else
|
|
GST_DEBUG_OBJECT (parsepad->parsebin, "autoplug-query returned %d", ret);
|
|
}
|
|
CHAIN_MUTEX_UNLOCK (parsepad->chain);
|
|
|
|
/* If exposed or nothing handled the query use the default handler */
|
|
if (!ret)
|
|
ret = gst_pad_query_default (pad, parent, query);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*gst_parse_pad_new:
|
|
*
|
|
* Creates a new GstParsePad for the given pad.
|
|
*/
|
|
static GstParsePad *
|
|
gst_parse_pad_new (GstParseBin * parsebin, GstParseChain * chain)
|
|
{
|
|
GstParsePad *parsepad;
|
|
GstProxyPad *ppad;
|
|
GstPadTemplate *pad_tmpl;
|
|
|
|
GST_DEBUG_OBJECT (parsebin, "making new parsepad");
|
|
pad_tmpl = gst_static_pad_template_get (&parse_bin_src_template);
|
|
parsepad =
|
|
g_object_new (GST_TYPE_PARSE_PAD, "direction", GST_PAD_SRC,
|
|
"template", pad_tmpl, NULL);
|
|
parsepad->chain = chain;
|
|
parsepad->parsebin = parsebin;
|
|
gst_object_unref (pad_tmpl);
|
|
|
|
ppad = gst_proxy_pad_get_internal (GST_PROXY_PAD (parsepad));
|
|
gst_pad_set_query_function (GST_PAD_CAST (ppad), gst_parse_pad_query);
|
|
|
|
/* Add downstream event probe */
|
|
GST_LOG_OBJECT (parsepad, "Adding event probe on internal pad %"
|
|
GST_PTR_FORMAT, ppad);
|
|
gst_pad_add_probe (GST_PAD_CAST (ppad),
|
|
GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM, gst_parse_pad_event, parsepad, NULL);
|
|
gst_object_unref (ppad);
|
|
|
|
return parsepad;
|
|
}
|
|
|
|
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);
|
|
if (ppad->notify_caps_id)
|
|
g_signal_handler_disconnect (ppad->pad, ppad->notify_caps_id);
|
|
gst_object_unref (ppad->pad);
|
|
g_slice_free (GstPendingPad, ppad);
|
|
}
|
|
|
|
/*****
|
|
* Element add/remove
|
|
*****/
|
|
|
|
/* call with dyn_lock held */
|
|
static void
|
|
unblock_pads (GstParseBin * parsebin)
|
|
{
|
|
GList *tmp;
|
|
|
|
GST_LOG_OBJECT (parsebin, "unblocking pads");
|
|
|
|
for (tmp = parsebin->blocked_pads; tmp; tmp = tmp->next) {
|
|
GstParsePad *parsepad = (GstParsePad *) tmp->data;
|
|
GstPad *opad;
|
|
|
|
opad = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (parsepad));
|
|
if (!opad)
|
|
continue;
|
|
|
|
GST_DEBUG_OBJECT (parsepad, "unblocking");
|
|
if (parsepad->block_id != 0) {
|
|
gst_pad_remove_probe (opad, parsepad->block_id);
|
|
parsepad->block_id = 0;
|
|
}
|
|
parsepad->blocked = FALSE;
|
|
/* make flushing, prevent NOT_LINKED */
|
|
gst_pad_set_active (GST_PAD_CAST (parsepad), FALSE);
|
|
gst_object_unref (parsepad);
|
|
gst_object_unref (opad);
|
|
GST_DEBUG_OBJECT (parsepad, "unblocked");
|
|
}
|
|
|
|
/* clear, no more blocked pads */
|
|
g_list_free (parsebin->blocked_pads);
|
|
parsebin->blocked_pads = NULL;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_parse_bin_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
|
GstParseBin *parsebin = GST_PARSE_BIN (element);
|
|
GstParseChain *chain_to_free = NULL;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
if (parsebin->typefind == NULL)
|
|
goto missing_typefind;
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
/* Make sure we've cleared all existing chains */
|
|
EXPOSE_LOCK (parsebin);
|
|
if (parsebin->parse_chain) {
|
|
gst_parse_chain_free (parsebin->parse_chain);
|
|
parsebin->parse_chain = NULL;
|
|
}
|
|
EXPOSE_UNLOCK (parsebin);
|
|
DYN_LOCK (parsebin);
|
|
GST_LOG_OBJECT (parsebin, "clearing shutdown flag");
|
|
parsebin->shutdown = FALSE;
|
|
DYN_UNLOCK (parsebin);
|
|
parsebin->have_type = FALSE;
|
|
|
|
|
|
/* connect a signal to find out when the typefind element found
|
|
* a type */
|
|
parsebin->have_type_id =
|
|
g_signal_connect (parsebin->typefind, "have-type",
|
|
G_CALLBACK (type_found), parsebin);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
if (parsebin->have_type_id)
|
|
g_signal_handler_disconnect (parsebin->typefind,
|
|
parsebin->have_type_id);
|
|
parsebin->have_type_id = 0;
|
|
DYN_LOCK (parsebin);
|
|
GST_LOG_OBJECT (parsebin, "setting shutdown flag");
|
|
parsebin->shutdown = TRUE;
|
|
unblock_pads (parsebin);
|
|
DYN_UNLOCK (parsebin);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
if (G_UNLIKELY (ret == GST_STATE_CHANGE_FAILURE))
|
|
goto activate_failed;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
EXPOSE_LOCK (parsebin);
|
|
if (parsebin->parse_chain) {
|
|
chain_to_free = parsebin->parse_chain;
|
|
gst_parse_chain_free_internal (parsebin->parse_chain, TRUE);
|
|
parsebin->parse_chain = NULL;
|
|
}
|
|
EXPOSE_UNLOCK (parsebin);
|
|
if (chain_to_free)
|
|
gst_parse_chain_free (chain_to_free);
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
g_mutex_lock (&parsebin->cleanup_lock);
|
|
if (parsebin->cleanup_thread) {
|
|
g_thread_join (parsebin->cleanup_thread);
|
|
parsebin->cleanup_thread = NULL;
|
|
}
|
|
g_mutex_unlock (&parsebin->cleanup_lock);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
missing_typefind:
|
|
{
|
|
gst_element_post_message (element,
|
|
gst_missing_element_message_new (element, "typefind"));
|
|
GST_ELEMENT_ERROR (parsebin, 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;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_parse_bin_handle_message (GstBin * bin, GstMessage * msg)
|
|
{
|
|
GstParseBin *parsebin = GST_PARSE_BIN (bin);
|
|
gboolean drop = FALSE;
|
|
|
|
switch (GST_MESSAGE_TYPE (msg)) {
|
|
case GST_MESSAGE_ERROR:{
|
|
/* Don't pass errors when shutting down. Sometimes,
|
|
* elements can generate spurious errors because we set the
|
|
* output pads to flushing, and they can't detect that if they
|
|
* send an event at exactly the wrong moment */
|
|
DYN_LOCK (parsebin);
|
|
drop = parsebin->shutdown;
|
|
DYN_UNLOCK (parsebin);
|
|
|
|
if (!drop) {
|
|
GST_OBJECT_LOCK (parsebin);
|
|
drop =
|
|
(g_list_find (parsebin->filtered, GST_MESSAGE_SRC (msg)) != NULL);
|
|
if (drop)
|
|
parsebin->filtered_errors =
|
|
g_list_prepend (parsebin->filtered_errors, gst_message_ref (msg));
|
|
GST_OBJECT_UNLOCK (parsebin);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (drop)
|
|
gst_message_unref (msg);
|
|
else
|
|
GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
|
|
}
|