[gstreamer-plugins-base: 97/216] - Add patches to fix some playbin2 bugs (#518880)

commit 2a5c1905e8be577c5aa28f81a634a3b227f2d0be Author: Bastien Nocera <hadess(a)fedoraproject.org&gt; Date: Tue Oct 13 15:32:49 2009 +0000 - Add patches to fix some playbin2 bugs (#518880) gstpb-fix-missing-plugins.patch | 2853 +++++++++++++++++++++++++++++++++++++++ gstpb-no-subtitle-errors.patch | 164 +++ gstreamer-plugins-base.spec | 12 +- 3 files changed, 3028 insertions(+), 1 deletion(-) --- diff --git a/gstpb-fix-missing-plugins.patch b/gstpb-fix-missing-plugins.patch new file mode 100644 index 0000000..dacfa8e --- /dev/null +++ b/gstpb-fix-missing-plugins.patch @@ -0,0 +1,2853 @@ +From 881e4aa606ac184e4da485a88066ff30e88fc5cd Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege(a)collabora.co.uk&gt; +Date: Sat, 26 Sep 2009 12:04:55 +0200 +Subject: [PATCH 1/7] decodebin2: Only use the object lock for protecting the subtitle elements + +Using the decodebin lock will result in deadlocks if the subtitle encoding +is accessed from a pad-added handler. +--- + gst/playback/gstdecodebin2.c | 12 +++++------- + 1 files changed, 5 insertions(+), 7 deletions(-) + +diff --git a/gst/playback/gstdecodebin2.c b/gst/playback/gstdecodebin2.c +index 3b60ae9..1ad7968 100644 +--- a/gst/playback/gstdecodebin2.c ++++ b/gst/playback/gstdecodebin2.c +@@ -857,18 +857,16 @@ gst_decode_bin_set_subs_encoding (GstDecodeBin * dbin, const gchar * encoding) + + GST_DEBUG_OBJECT (dbin, "Setting new encoding: %s", GST_STR_NULL (encoding)); + +- DECODE_BIN_LOCK (dbin); + GST_OBJECT_LOCK (dbin); + g_free (dbin->encoding); + dbin->encoding = g_strdup (encoding); +- GST_OBJECT_UNLOCK (dbin); + + /* set the subtitle encoding on all added elements */ + for (walk = dbin->subtitles; walk; walk = g_list_next (walk)) { + g_object_set (G_OBJECT (walk->data), "subtitle-encoding", dbin->encoding, + NULL); + } +- DECODE_BIN_UNLOCK (dbin); ++ GST_OBJECT_UNLOCK (dbin); + } + + static gchar * +@@ -1319,11 +1317,11 @@ connect_pad (GstDecodeBin * dbin, GstElement * src, GstDecodePad * dpad, + continue; + } + if (subtitle) { +- DECODE_BIN_LOCK (dbin); ++ GST_OBJECT_LOCK (dbin); + /* we added the element now, add it to the list of subtitle-encoding + * elements when we can set the property */ + dbin->subtitles = g_list_prepend (dbin->subtitles, element); +- DECODE_BIN_UNLOCK (dbin); ++ GST_OBJECT_UNLOCK (dbin); + } + + res = TRUE; +@@ -2364,10 +2362,10 @@ restart: + + done: + gst_element_set_state (element, GST_STATE_NULL); +- DECODE_BIN_LOCK (dbin); ++ GST_OBJECT_LOCK (dbin); + /* remove possible subtitle element */ + dbin->subtitles = g_list_remove (dbin->subtitles, element); +- DECODE_BIN_UNLOCK (dbin); ++ GST_OBJECT_UNLOCK (dbin); + gst_bin_remove (GST_BIN (dbin), element); + + beach: +-- +1.6.4.3 + +From a7fe6e683ae91caa9445d899964553a2610fba17 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege(a)collabora.co.uk&gt; +Date: Sat, 26 Sep 2009 12:10:21 +0200 +Subject: [PATCH 2/7] decodebin2: Don't set the external ghostpads blocked but only their targets + +Pad blocks should never be done on external pads as outside elements +might want to use their own pad blocks on them and this will lead to +conflicts and deadlocks. +--- + gst/playback/gstdecodebin2.c | 23 ++++++++++++++++++----- + 1 files changed, 18 insertions(+), 5 deletions(-) + +diff --git a/gst/playback/gstdecodebin2.c b/gst/playback/gstdecodebin2.c +index 1ad7968..24e251b 100644 +--- a/gst/playback/gstdecodebin2.c ++++ b/gst/playback/gstdecodebin2.c +@@ -2484,7 +2484,7 @@ gst_decode_pad_init (GstDecodePad * pad) + } + + static void +-source_pad_blocked_cb (GstDecodePad * dpad, gboolean blocked, gpointer unused) ++source_pad_blocked_cb (GstPad * opad, gboolean blocked, GstDecodePad * dpad) + { + GstDecodeGroup *group; + GstDecodeBin *dbin; +@@ -2531,10 +2531,16 @@ static void + gst_decode_pad_set_blocked (GstDecodePad * dpad, gboolean blocked) + { + GstDecodeBin *dbin = dpad->dbin; ++ GstPad *opad; + + DECODE_BIN_DYN_LOCK (dbin); +- gst_pad_set_blocked_async (GST_PAD (dpad), blocked, +- (GstPadBlockCallback) source_pad_blocked_cb, NULL); ++ opad = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (dpad)); ++ if (!opad) ++ goto out; ++ ++ gst_pad_set_blocked_async_full (opad, blocked, ++ (GstPadBlockCallback) source_pad_blocked_cb, gst_object_ref (dpad), ++ (GDestroyNotify) gst_object_unref); + if (blocked) { + if (dbin->shutdown) { + /* deactivate to force flushing state to prevent NOT_LINKED errors */ +@@ -2548,6 +2554,8 @@ gst_decode_pad_set_blocked (GstDecodePad * dpad, gboolean blocked) + gst_object_unref (dpad); + dbin->blocked_pads = g_list_remove (dbin->blocked_pads, dpad); + } ++ gst_object_unref (opad); ++out: + DECODE_BIN_DYN_UNLOCK (dbin); + } + +@@ -2659,15 +2667,20 @@ unblock_pads (GstDecodeBin * dbin) + + for (tmp = dbin->blocked_pads; tmp; tmp = next) { + GstDecodePad *dpad = (GstDecodePad *) tmp->data; ++ GstPad *opad = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (dpad)); + + next = g_list_next (tmp); ++ if (!opad) ++ continue; + + GST_DEBUG_OBJECT (dpad, "unblocking"); +- gst_pad_set_blocked_async (GST_PAD (dpad), FALSE, +- (GstPadBlockCallback) source_pad_blocked_cb, NULL); ++ gst_pad_set_blocked_async_full (opad, FALSE, ++ (GstPadBlockCallback) source_pad_blocked_cb, gst_object_ref (dpad), ++ (GDestroyNotify) gst_object_unref); + /* make flushing, prevent NOT_LINKED */ + GST_PAD_SET_FLUSHING (GST_PAD (dpad)); + gst_object_unref (dpad); ++ gst_object_unref (opad); + GST_DEBUG_OBJECT (dpad, "unblocked"); + } + +-- +1.6.4.3 + +From 10cb19bcda3082435d57518666076a69e51a1bba Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege(a)collabora.co.uk&gt; +Date: Thu, 24 Sep 2009 16:05:58 +0200 +Subject: [PATCH 3/7] factorylist: Use gst_caps_can_intersect() instead of _intersect() + +This is faster and results in less allocations. +--- + gst/playback/gstfactorylists.c | 9 +++------ + 1 files changed, 3 insertions(+), 6 deletions(-) + +diff --git a/gst/playback/gstfactorylists.c b/gst/playback/gstfactorylists.c +index 7099927..df1916f 100644 +--- a/gst/playback/gstfactorylists.c ++++ b/gst/playback/gstfactorylists.c +@@ -240,7 +240,6 @@ gst_factory_list_filter (GValueArray * array, const GstCaps * caps) + + /* we only care about the sink templates */ + if (templ->direction == GST_PAD_SINK) { +- GstCaps *intersect; + GstCaps *tmpl_caps; + + /* try to intersect the caps with the caps of the template */ +@@ -248,21 +247,19 @@ gst_factory_list_filter (GValueArray * array, const GstCaps * caps) + + /* FIXME, intersect is not the right method, we ideally want to check + * for a subset here */ +- intersect = gst_caps_intersect (caps, tmpl_caps); +- gst_caps_unref (tmpl_caps); + + /* check if the intersection is empty */ +- if (!gst_caps_is_empty (intersect)) { ++ if (gst_caps_can_intersect (caps, tmpl_caps)) { + /* non empty intersection, we can use this element */ + GValue resval = { 0, }; + g_value_init (&resval, G_TYPE_OBJECT); + g_value_set_object (&resval, factory); + g_value_array_append (result, &resval); + g_value_unset (&resval); +- gst_caps_unref (intersect); ++ gst_caps_unref (tmpl_caps); + break; + } +- gst_caps_unref (intersect); ++ gst_caps_unref (tmpl_caps); + } + } + } +-- +1.6.4.3 + +From 39bc12ee20437b352a13361ba48dcc886fce35a2 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege(a)collabora.co.uk&gt; +Date: Sat, 26 Sep 2009 12:17:49 +0200 +Subject: [PATCH 4/7] decodebin2: Rewrite autoplugging and how groups of pads are exposed + +This now keeps track of everything that is going on, creates +a tree of chains and groups to allow "demuxer after demuxer" scenarios +and allows chained Oggs with multiple streams (needs oggdemux or playbin2 fixes). + +Also document everything in detail and give a general overview of what +decodebin2 is doing at the top of the sources. + +Fixes bug #596183, #563828 and #591677. +--- + gst/playback/gstdecodebin2.c | 1782 ++++++++++++++++++++++-------------------- + 1 files changed, 946 insertions(+), 836 deletions(-) + +diff --git a/gst/playback/gstdecodebin2.c b/gst/playback/gstdecodebin2.c +index 24e251b..1d6c9d2 100644 +--- a/gst/playback/gstdecodebin2.c ++++ b/gst/playback/gstdecodebin2.c +@@ -1,5 +1,6 @@ + /* GStreamer + * Copyright (C) <2006> Edward Hervey <edward(a)fluendo.com&gt; ++ * Copyright (C) <2009> Sebastian Dröge <sebastian.droege(a)collabora.co.uk&gt; + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public +@@ -31,6 +32,51 @@ + * decodebin2 instead of the older #GstDecodeBin for its internal auto-plugging. + */ + ++/* Implementation notes: ++ * ++ * The following section describes how decodebin2 works internally. ++ * ++ * The first part of decodebin2 is it's typefind element, which tries ++ * to get the type of the input stream. If the type is found autoplugging starts. ++ * ++ * decodebin2 internally organizes the elements it autoplugged into GstDecodeChains ++ * and GstDecodeGroups. A decode chain is a single chain of decoding, this ++ * means that if decodebin2 every autoplugs an element with two+ srcpads ++ * (e.g. a demuxer) this will end the chain and everything following this ++ * demuxer will be put into decode groups below the chain. Otherwise, ++ * if an element has a single srcpad that outputs raw data the decode chain ++ * is ended too and a GstDecodePad is stored and blocked. ++ * ++ * A decode group combines a number of chains that are created by a ++ * demuxer element. All those chains are connected through a multiqueue to ++ * the demuxer. A new group for the same demuxer is only created if the ++ * demuxer has signaled no-more pads, in which case all following pads ++ * create a new chain in the new group. ++ * ++ * This continues until the top-level decode chain is complete. A decode ++ * chain is complete if it either ends with a blocked endpad, if autoplugging ++ * stopped because no suitable plugins could be found or if the active group ++ * is complete. A decode group OTOH is complete if all child chains are complete. ++ * ++ * If this happens at some point, all endpads of all active groups are exposed. ++ * For this decodebin2 adds the endpads, signals no-more-pads and then unblocks ++ * them. Now playback starts. ++ * ++ * If one of the chains that end on a endpad receives EOS decodebin2 checks upwards ++ * via the parent pointers if all chains and groups are drained. In that case ++ * everything goes into EOS. ++ * If there is a chain where the active group is drained but there exist next groups ++ * the active group is hidden (endpads are removed) and the next group is exposed. ++ * ++ * Note 1: If we're talking about blocked endpads this really means that the ++ * *target* pads of the endpads are blocked. Pads that are exposed to the outside ++ * should never ever be blocked! ++ * ++ * Note 2: If a group is complete and the parent's chain demuxer adds new pads ++ * but never signaled no-more-pads this additional pads will be ignored! ++ * ++ */ ++ + #ifdef HAVE_CONFIG_H + #include "config.h" + #endif +@@ -61,6 +107,7 @@ GST_STATIC_PAD_TEMPLATE ("src%d", + GST_DEBUG_CATEGORY_STATIC (gst_decode_bin_debug); + #define GST_CAT_DEFAULT gst_decode_bin_debug + ++typedef struct _GstDecodeChain GstDecodeChain; + typedef struct _GstDecodeGroup GstDecodeGroup; + typedef struct _GstDecodePad GstDecodePad; + typedef GstGhostPadClass GstDecodePadClass; +@@ -90,16 +137,14 @@ struct _GstDecodeBin + + GstElement *typefind; /* this holds the typefind object */ + +- GMutex *lock; /* Protects activegroup and groups */ +- GstDecodeGroup *activegroup; /* group currently active */ +- GList *groups; /* List of non-active GstDecodeGroups, sorted in +- * order of creation. */ +- GList *oldgroups; /* List of no-longer-used GstDecodeGroups. +- * Should be freed in dispose */ ++ GMutex *expose_lock; /* Protects exposal and removal of groups */ ++ GstDecodeChain *decode_chain; /* Top level decode chain */ + gint nbpads; /* unique identifier for source pads */ + + GValueArray *factories; /* factories we can use for selecting elements */ +- GList *subtitles; /* List of elements with subtitle-encoding */ ++ ++ GList *subtitles; /* List of elements with subtitle-encoding, ++ * protected by object lock! */ + + gboolean have_type; /* if we received the have_type signal */ + guint have_type_id; /* signal id for have-type from typefind */ +@@ -170,8 +215,8 @@ static const GstElementDetails gst_decode_bin_details = + GST_ELEMENT_DETAILS ("Decoder Bin", + "Generic/Bin/Decoder", + "Autoplug and decode to raw media", +- "Edward Hervey <edward(a)fluendo.com&gt;&quot;); +- ++ "Edward Hervey <edward.hervey(a)collabora.co.uk&gt;, " ++ "Sebastian Dröge <sebastian.droege(a)collabora.co.uk&gt;&quot;); + + static void do_async_start (GstDecodeBin * dbin); + static void do_async_done (GstDecodeBin * dbin); +@@ -194,33 +239,31 @@ static void gst_decode_bin_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec); + static void gst_decode_bin_set_caps (GstDecodeBin * dbin, GstCaps * caps); + static GstCaps *gst_decode_bin_get_caps (GstDecodeBin * dbin); +-static void caps_notify_group_cb (GstPad * pad, GParamSpec * unused, +- GstDecodeGroup * group); + static void caps_notify_cb (GstPad * pad, GParamSpec * unused, +- GstDecodeBin * dbin); ++ GstDecodeChain * chain); + + static GstPad *find_sink_pad (GstElement * element); + static GstStateChangeReturn gst_decode_bin_change_state (GstElement * element, + GstStateChange transition); + +-#define DECODE_BIN_LOCK(dbin) G_STMT_START { \ ++#define EXPOSE_LOCK(dbin) G_STMT_START { \ + GST_LOG_OBJECT (dbin, \ +- "locking from thread %p", \ ++ "expose locking from thread %p", \ + g_thread_self ()); \ +- g_mutex_lock (GST_DECODE_BIN_CAST(dbin)->lock); \ ++ g_mutex_lock (GST_DECODE_BIN_CAST(dbin)->expose_lock); \ + GST_LOG_OBJECT (dbin, \ +- "locked from thread %p", \ ++ "expose locked from thread %p", \ + g_thread_self ()); \ + } G_STMT_END + +-#define DECODE_BIN_UNLOCK(dbin) G_STMT_START { \ ++#define EXPOSE_UNLOCK(dbin) G_STMT_START { \ + GST_LOG_OBJECT (dbin, \ +- "unlocking from thread %p", \ ++ "expose unlocking from thread %p", \ + g_thread_self ()); \ +- g_mutex_unlock (GST_DECODE_BIN_CAST(dbin)->lock); \ ++ g_mutex_unlock (GST_DECODE_BIN_CAST(dbin)->expose_lock); \ + } G_STMT_END + +-#define DECODE_BIN_DYN_LOCK(dbin) G_STMT_START { \ ++#define DYN_LOCK(dbin) G_STMT_START { \ + GST_LOG_OBJECT (dbin, \ + "dynlocking from thread %p", \ + g_thread_self ()); \ +@@ -230,7 +273,7 @@ static GstStateChangeReturn gst_decode_bin_change_state (GstElement * element, + g_thread_self ()); \ + } G_STMT_END + +-#define DECODE_BIN_DYN_UNLOCK(dbin) G_STMT_START { \ ++#define DYN_UNLOCK(dbin) G_STMT_START { \ + GST_LOG_OBJECT (dbin, \ + "dynunlocking from thread %p", \ + g_thread_self ()); \ +@@ -241,68 +284,109 @@ static GstStateChangeReturn gst_decode_bin_change_state (GstElement * element, + * + * Streams belonging to the same group/chain of a media file + * ++ * When changing something here lock the parent chain! + */ + struct _GstDecodeGroup + { + GstDecodeBin *dbin; +- GMutex *lock; +- GstElement *multiqueue; +- +- gboolean exposed; /* TRUE if this group is exposed */ +- gboolean drained; /* TRUE if EOS went through all endpads */ +- gboolean blocked; /* TRUE if all endpads are blocked */ +- gboolean complete; /* TRUE if we are not expecting anymore streams +- * on this group */ ++ GstDecodeChain *parent; ++ ++ GstElement *multiqueue; /* Used for linking all child chains */ + gulong overrunsig; /* the overrun signal for multiqueue */ +- guint nbdynamic; /* number of dynamic pads in the group. */ + +- GList *endpads; /* List of GstDecodePad of source pads to be exposed */ +- GList *reqpads; /* List of RequestPads for multiqueue. */ ++ gboolean overrun; /* TRUE if the multiqueue signaled overrun. This ++ * means that we should really expose the group */ ++ ++ gboolean no_more_pads; /* TRUE if the demuxer signaled no-more-pads */ ++ gboolean drained; /* TRUE if the all children are drained */ ++ ++ GList *children; /* List of GstDecodeChains in this group */ ++ ++ GList *reqpads; /* List of RequestPads for multiqueue, there is ++ * exactly one RequestPad per child chain */ + }; + +-#define GROUP_MUTEX_LOCK(group) G_STMT_START { \ +- GST_LOG_OBJECT (group->dbin, \ +- "locking group %p from thread %p", \ +- group, g_thread_self ()); \ +- g_mutex_lock (group->lock); \ +- GST_LOG_OBJECT (group->dbin, \ +- "locked group %p from thread %p", \ +- group, g_thread_self ()); \ +-} G_STMT_END ++struct _GstDecodeChain ++{ ++ GstDecodeGroup *parent; ++ GstDecodeBin *dbin; + +-#define GROUP_MUTEX_UNLOCK(group) G_STMT_START { \ +- GST_LOG_OBJECT (group->dbin, \ +- "unlocking group %p from thread %p", \ +- group, g_thread_self ()); \ +- g_mutex_unlock (group->lock); \ +-} G_STMT_END ++ GMutex *lock; /* Protects this chain and its groups */ + ++ gboolean demuxer; /* TRUE if elements->data is a demuxer */ ++ GList *elements; /* All elements in this group, first ++ is the latest and most downstream element */ + +-static GstDecodeGroup *gst_decode_group_new (GstDecodeBin * decode_bin, +- gboolean use_queue); +-static GstPad *gst_decode_group_control_demuxer_pad (GstDecodeGroup * group, +- GstPad * pad); +-static gboolean gst_decode_group_control_source_pad (GstDecodeGroup * group, +- GstDecodePad * pad); +-static gboolean gst_decode_group_expose (GstDecodeGroup * group); +-static gboolean gst_decode_group_check_if_blocked (GstDecodeGroup * group); +-static void gst_decode_group_set_complete (GstDecodeGroup * group); ++ /* Note: there are only groups if the last element of this chain ++ * is a demuxer, otherwise the chain will end with an endpad. ++ * The other way around this means, that endpad only exists if this ++ * chain doesn't end with a demuxer! */ ++ ++ GstDecodeGroup *active_group; /* Currently active group */ ++ GList *next_groups; /* head is newest group, tail is next group. ++ a new group will be created only if the head ++ group had no-more-pads. If it's only exposed ++ all new pads will be ignored! */ ++ GList *pending_pads; /* Pads that have no fixed caps yet */ ++ ++ GstDecodePad *endpad; /* Pad of this chain that could be exposed */ ++ gboolean deadend; /* This chain is incomplete and can't be completed, ++ e.g. no suitable decoder could be found ++ */ ++ ++ /* FIXME: This should be done directly via a thread! */ ++ GList *old_groups; /* Groups that should be freed later */ ++}; ++ ++static void gst_decode_chain_free (GstDecodeChain * chain); ++static GstDecodeChain *gst_decode_chain_new (GstDecodeBin * dbin, ++ GstDecodeGroup * group); + static void gst_decode_group_hide (GstDecodeGroup * group); + static void gst_decode_group_free (GstDecodeGroup * group); ++static GstDecodeGroup *gst_decode_group_new (GstDecodeBin * dbin, ++ GstDecodeChain * chain); ++static gboolean gst_decode_chain_is_complete (GstDecodeChain * chain); ++static void gst_decode_chain_handle_eos (GstDecodeChain * chain); ++static gboolean gst_decode_chain_expose (GstDecodeChain * chain, ++ GList ** endpads); ++static gboolean gst_decode_chain_is_drained (GstDecodeChain * chain); ++static gboolean gst_decode_group_is_complete (GstDecodeGroup * group); ++static GstPad *gst_decode_group_control_demuxer_pad (GstDecodeGroup * group, ++ GstPad * pad); ++static gboolean gst_decode_group_is_drained (GstDecodeGroup * group); ++ ++static gboolean gst_decode_bin_expose (GstDecodeBin * dbin); ++ ++#define CHAIN_MUTEX_LOCK(chain) G_STMT_START { \ ++ GST_LOG_OBJECT (chain->dbin, \ ++ "locking chain %p from thread %p", \ ++ chain, g_thread_self ()); \ ++ g_mutex_lock (chain->lock); \ ++ GST_LOG_OBJECT (chain->dbin, \ ++ "locked chain %p from thread %p", \ ++ chain, g_thread_self ()); \ ++} G_STMT_END ++ ++#define CHAIN_MUTEX_UNLOCK(chain) G_STMT_START { \ ++ GST_LOG_OBJECT (chain->dbin, \ ++ "unlocking chain %p from thread %p", \ ++ chain, g_thread_self ()); \ ++ g_mutex_unlock (chain->lock); \ ++} G_STMT_END + + /* GstDecodePad + * +- * GstPad private used for source pads of groups ++ * GstPad private used for source pads of chains + */ + struct _GstDecodePad + { + GstGhostPad parent; + GstDecodeBin *dbin; +- GstDecodeGroup *group; ++ GstDecodeChain *chain; + +- gboolean blocked; /* the pad is blocked */ ++ gboolean blocked; /* the *target* pad is blocked */ ++ gboolean exposed; /* the pad is exposed */ + gboolean drained; /* an EOS has been seen on the pad */ +- gboolean added; /* the pad is added to decodebin */ + }; + + G_DEFINE_TYPE (GstDecodePad, gst_decode_pad, GST_TYPE_GHOST_PAD); +@@ -310,10 +394,11 @@ G_DEFINE_TYPE (GstDecodePad, gst_decode_pad, GST_TYPE_GHOST_PAD); + #define GST_DECODE_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DECODE_PAD,GstDecodePad)) + + static GstDecodePad *gst_decode_pad_new (GstDecodeBin * dbin, GstPad * pad, +- GstDecodeGroup * group); ++ GstDecodeChain * chain); + static void gst_decode_pad_activate (GstDecodePad * dpad, +- GstDecodeGroup * group); ++ GstDecodeChain * chain); + static void gst_decode_pad_unblock (GstDecodePad * dpad); ++static void gst_decode_pad_set_blocked (GstDecodePad * dpad, gboolean blocked); + + /******************************** + * Standard GObject boilerplate * +@@ -643,9 +728,8 @@ gst_decode_bin_init (GstDecodeBin * decode_bin) + G_CALLBACK (type_found), decode_bin); + } + +- decode_bin->lock = g_mutex_new (); +- decode_bin->activegroup = NULL; +- decode_bin->groups = NULL; ++ decode_bin->expose_lock = g_mutex_new (); ++ decode_bin->decode_chain = NULL; + + decode_bin->dyn_lock = g_mutex_new (); + decode_bin->shutdown = FALSE; +@@ -658,82 +742,6 @@ gst_decode_bin_init (GstDecodeBin * decode_bin) + } + + static void +-gst_decode_bin_remove_groups (GstDecodeBin * dbin) +-{ +- GList *tmp; +- GstIterator *it; +- gpointer point; +- gboolean done; +- GstIteratorResult res; +- +- GST_DEBUG_OBJECT (dbin, "cleaning up"); +- +- if (dbin->activegroup) { +- GST_DEBUG_OBJECT (dbin, "free active group %p", dbin->activegroup); +- gst_decode_group_free (dbin->activegroup); +- dbin->activegroup = NULL; +- } +- +- /* remove groups */ +- for (tmp = dbin->groups; tmp; tmp = g_list_next (tmp)) { +- GstDecodeGroup *group = (GstDecodeGroup *) tmp->data; +- +- GST_DEBUG_OBJECT (dbin, "free group %p", group); +- gst_decode_group_free (group); +- } +- g_list_free (dbin->groups); +- dbin->groups = NULL; +- +- for (tmp = dbin->oldgroups; tmp; tmp = g_list_next (tmp)) { +- GstDecodeGroup *group = (GstDecodeGroup *) tmp->data; +- +- GST_DEBUG_OBJECT (dbin, "free old group %p", group); +- gst_decode_group_free (group); +- } +- g_list_free (dbin->oldgroups); +- dbin->oldgroups = NULL; +- +- GST_DEBUG_OBJECT (dbin, "removing last elements"); +- +- /* remove all remaining elements */ +- it = gst_bin_iterate_elements (GST_BIN_CAST (dbin)); +-restart: +- done = FALSE; +- while (!done) { +- res = gst_iterator_next (it, &point); +- switch (res) { +- case GST_ITERATOR_DONE: +- done = TRUE; +- break; +- case GST_ITERATOR_RESYNC: +- gst_iterator_resync (it); +- goto restart; +- case GST_ITERATOR_ERROR: +- GST_WARNING_OBJECT (dbin, +- "Had an error while iterating bin %s", GST_ELEMENT_NAME (dbin)); +- done = TRUE; +- break; +- case GST_ITERATOR_OK: +- { +- GstElement *elem = GST_ELEMENT_CAST (point); +- +- /* don't remove the typefind element */ +- if (elem != dbin->typefind) { +- GST_DEBUG_OBJECT (dbin, "remove element %s", GST_ELEMENT_NAME (elem)); +- gst_bin_remove (GST_BIN_CAST (dbin), elem); +- gst_element_set_state (elem, GST_STATE_NULL); +- } +- gst_object_unref (elem); +- break; +- } +- default: +- break; +- } +- } +- gst_iterator_free (it); +-} +- +-static void + gst_decode_bin_dispose (GObject * object) + { + GstDecodeBin *decode_bin; +@@ -744,7 +752,9 @@ gst_decode_bin_dispose (GObject * object) + g_value_array_free (decode_bin->factories); + decode_bin->factories = NULL; + +- gst_decode_bin_remove_groups (decode_bin); ++ if (decode_bin->decode_chain) ++ gst_decode_chain_free (decode_bin->decode_chain); ++ decode_bin->decode_chain = NULL; + + if (decode_bin->caps) + gst_caps_unref (decode_bin->caps); +@@ -766,9 +776,9 @@ gst_decode_bin_finalize (GObject * object) + + decode_bin = GST_DECODE_BIN (object); + +- if (decode_bin->lock) { +- g_mutex_free (decode_bin->lock); +- decode_bin->lock = NULL; ++ if (decode_bin->expose_lock) { ++ g_mutex_free (decode_bin->expose_lock); ++ decode_bin->expose_lock = NULL; + } + + if (decode_bin->dyn_lock) { +@@ -790,21 +800,10 @@ gst_decode_bin_finalize (GObject * object) + static void + gst_decode_bin_set_caps (GstDecodeBin * dbin, GstCaps * caps) + { +- GstCaps *old; +- + GST_DEBUG_OBJECT (dbin, "Setting new caps: %" GST_PTR_FORMAT, caps); + + GST_OBJECT_LOCK (dbin); +- old = dbin->caps; +- if (old != caps) { +- if (caps) +- gst_caps_ref (caps); +- +- dbin->caps = caps; +- +- if (old) +- gst_caps_unref (old); +- } ++ gst_caps_replace (&dbin->caps, caps); + GST_OBJECT_UNLOCK (dbin); + } + +@@ -994,26 +993,20 @@ static gboolean is_demuxer_element (GstElement * srcelement); + + static gboolean connect_pad (GstDecodeBin * dbin, GstElement * src, + GstDecodePad * dpad, GstPad * pad, GstCaps * caps, GValueArray * factories, +- GstDecodeGroup * group); ++ GstDecodeChain * chain); + static gboolean connect_element (GstDecodeBin * dbin, GstElement * element, +- GstDecodeGroup * group); ++ GstDecodeChain * chain); + static void expose_pad (GstDecodeBin * dbin, GstElement * src, +- GstDecodePad * dpad, GstPad * pad, GstDecodeGroup * group); ++ GstDecodePad * dpad, GstPad * pad, GstDecodeChain * chain); + +-static void pad_added_group_cb (GstElement * element, GstPad * pad, +- GstDecodeGroup * group); +-static void pad_removed_group_cb (GstElement * element, GstPad * pad, +- GstDecodeGroup * group); +-static void no_more_pads_group_cb (GstElement * element, +- GstDecodeGroup * group); + static void pad_added_cb (GstElement * element, GstPad * pad, +- GstDecodeBin * dbin); ++ GstDecodeChain * chain); + static void pad_removed_cb (GstElement * element, GstPad * pad, +- GstDecodeBin * dbin); +-static void no_more_pads_cb (GstElement * element, GstDecodeBin * dbin); ++ GstDecodeChain * chain); ++static void no_more_pads_cb (GstElement * element, GstDecodeChain * chain); + +-static GstDecodeGroup *get_current_group (GstDecodeBin * dbin, +- gboolean create, gboolean demux, gboolean * created); ++static GstDecodeGroup *gst_decode_chain_get_current_group (GstDecodeChain * ++ chain); + + /* called when a new pad is discovered. It will perform some basic actions + * before trying to link something to it. +@@ -1029,7 +1022,7 @@ static GstDecodeGroup *get_current_group (GstDecodeBin * dbin, + */ + static void + analyze_new_pad (GstDecodeBin * dbin, GstElement * src, GstPad * pad, +- GstCaps * caps, GstDecodeGroup * group) ++ GstCaps * caps, GstDecodeChain * chain) + { + gboolean apcontinue = TRUE; + GValueArray *factories = NULL, *result = NULL; +@@ -1038,13 +1031,40 @@ analyze_new_pad (GstDecodeBin * dbin, GstElement * src, GstPad * pad, + GST_DEBUG_OBJECT (dbin, "Pad %s:%s caps:%" GST_PTR_FORMAT, + GST_DEBUG_PAD_NAME (pad), caps); + ++ if (chain->elements && src != chain->elements->data) { ++ GST_ERROR_OBJECT (dbin, "New pad from not the last element in this chain"); ++ return; ++ } ++ ++ if (chain->endpad) { ++ GST_ERROR_OBJECT (dbin, "New pad in a chain that is already complete"); ++ return; ++ } ++ ++ if (chain->demuxer) { ++ GstDecodeGroup *group; ++ GstDecodeChain *oldchain = chain; ++ ++ CHAIN_MUTEX_LOCK (oldchain); ++ group = gst_decode_chain_get_current_group (chain); ++ if (group) { ++ chain = gst_decode_chain_new (dbin, group); ++ group->children = g_list_prepend (group->children, chain); ++ } ++ CHAIN_MUTEX_UNLOCK (oldchain); ++ if (!group) { ++ GST_WARNING_OBJECT (dbin, "No current group"); ++ return; ++ } ++ } ++ + if ((caps == NULL) || gst_caps_is_empty (caps)) + goto unknown_type; + + if (gst_caps_is_any (caps)) + goto any_caps; + +- dpad = gst_decode_pad_new (dbin, pad, group); ++ dpad = gst_decode_pad_new (dbin, pad, chain); + + /* 1. Emit 'autoplug-continue' the result will tell us if this pads needs + * further autoplugging. */ +@@ -1088,7 +1108,7 @@ analyze_new_pad (GstDecodeBin * dbin, GstElement * src, GstPad * pad, + + /* 1.e else continue autoplugging something from the list. */ + GST_LOG_OBJECT (pad, "Let's continue discovery on this pad"); +- connect_pad (dbin, src, dpad, pad, caps, factories, group); ++ connect_pad (dbin, src, dpad, pad, caps, factories, chain); + + gst_object_unref (dpad); + g_value_array_free (factories); +@@ -1098,7 +1118,7 @@ analyze_new_pad (GstDecodeBin * dbin, GstElement * src, GstPad * pad, + expose_pad: + { + GST_LOG_OBJECT (dbin, "Pad is final. autoplug-continue:%d", apcontinue); +- expose_pad (dbin, src, dpad, pad, group); ++ expose_pad (dbin, src, dpad, pad, chain); + gst_object_unref (dpad); + return; + } +@@ -1108,14 +1128,19 @@ unknown_type: + g_signal_emit (G_OBJECT (dbin), + gst_decode_bin_signals[SIGNAL_UNKNOWN_TYPE], 0, pad, caps); + +- /* Check if there are no pending groups, if so, commit our state */ +- if (dbin->groups == NULL) { +- do_async_done (dbin); +- } ++ chain->deadend = TRUE; + + gst_element_post_message (GST_ELEMENT_CAST (dbin), + gst_missing_decoder_message_new (GST_ELEMENT_CAST (dbin), caps)); + ++ /* Try to expose anything */ ++ EXPOSE_LOCK (dbin); ++ if (gst_decode_chain_is_complete (dbin->decode_chain)) { ++ gst_decode_bin_expose (dbin); ++ } ++ EXPOSE_UNLOCK (dbin); ++ do_async_done (dbin); ++ + if (src == dbin->typefind) { + gchar *desc; + +@@ -1150,17 +1175,14 @@ any_caps: + setup_caps_delay: + { + /* connect to caps notification */ +- if (group) { +- GROUP_MUTEX_LOCK (group); +- group->nbdynamic++; +- GST_LOG_OBJECT (dbin, "Group %p has now %d dynamic elements", group, +- group->nbdynamic); +- GROUP_MUTEX_UNLOCK (group); +- g_signal_connect (G_OBJECT (pad), "notify::caps", +- G_CALLBACK (caps_notify_group_cb), group); +- } else +- g_signal_connect (G_OBJECT (pad), "notify::caps", +- G_CALLBACK (caps_notify_cb), dbin); ++ CHAIN_MUTEX_LOCK (chain); ++ GST_LOG_OBJECT (dbin, "Chain %p has now %d dynamic pads", chain, ++ g_list_length (chain->pending_pads)); ++ chain->pending_pads = ++ g_list_prepend (chain->pending_pads, gst_object_ref (pad)); ++ CHAIN_MUTEX_UNLOCK (chain); ++ g_signal_connect (G_OBJECT (pad), "notify::caps", ++ G_CALLBACK (caps_notify_cb), chain); + return; + } + } +@@ -1179,28 +1201,28 @@ setup_caps_delay: + static gboolean + connect_pad (GstDecodeBin * dbin, GstElement * src, GstDecodePad * dpad, + GstPad * pad, GstCaps * caps, GValueArray * factories, +- GstDecodeGroup * group) ++ GstDecodeChain * chain) + { + gboolean res = FALSE; + GstPad *mqpad = NULL; ++ gboolean is_demuxer = chain->parent && !chain->elements; /* First pad after the demuxer */ + + g_return_val_if_fail (factories != NULL, FALSE); + g_return_val_if_fail (factories->n_values > 0, FALSE); + +- GST_DEBUG_OBJECT (dbin, "pad %s:%s , group:%p", +- GST_DEBUG_PAD_NAME (pad), group); ++ GST_DEBUG_OBJECT (dbin, "pad %s:%s , chain:%p", ++ GST_DEBUG_PAD_NAME (pad), chain); + + /* 1. is element demuxer or parser */ +- if (is_demuxer_element (src)) { +- GST_LOG_OBJECT (src, "is a demuxer, connecting the pad through multiqueue"); +- +- if (!group) +- group = get_current_group (dbin, TRUE, TRUE, NULL); ++ if (is_demuxer) { ++ GST_LOG_OBJECT (src, ++ "is a demuxer, connecting the pad through multiqueue '%s'", ++ GST_OBJECT_NAME (chain->parent->multiqueue)); + + gst_ghost_pad_set_target (GST_GHOST_PAD (dpad), NULL); +- if (!(mqpad = gst_decode_group_control_demuxer_pad (group, pad))) ++ if (!(mqpad = gst_decode_group_control_demuxer_pad (chain->parent, pad))) + goto beach; +- src = group->multiqueue; ++ src = chain->parent->multiqueue; + pad = mqpad; + gst_ghost_pad_set_target (GST_GHOST_PAD (dpad), pad); + } +@@ -1213,6 +1235,11 @@ connect_pad (GstDecodeBin * dbin, GstElement * src, GstDecodePad * dpad, + GstPad *sinkpad; + gboolean subtitle; + ++ /* Set dpad target to pad again, it might've been unset ++ * below but we came back here because something failed ++ */ ++ gst_ghost_pad_set_target (GST_GHOST_PAD (dpad), pad); ++ + /* take first factory */ + factory = g_value_get_object (g_value_array_get_nth (factories, 0)); + /* Remove selected factory from the list. */ +@@ -1230,7 +1257,7 @@ connect_pad (GstDecodeBin * dbin, GstElement * src, GstDecodePad * dpad, + case GST_AUTOPLUG_SELECT_EXPOSE: + GST_DEBUG_OBJECT (dbin, "autoplug select requested expose"); + /* expose the pad, we don't have the source element */ +- expose_pad (dbin, src, dpad, pad, group); ++ expose_pad (dbin, src, dpad, pad, chain); + res = TRUE; + goto beach; + case GST_AUTOPLUG_SELECT_SKIP: +@@ -1293,8 +1320,14 @@ connect_pad (GstDecodeBin * dbin, GstElement * src, GstDecodePad * dpad, + gst_object_unref (sinkpad); + GST_LOG_OBJECT (dbin, "linked on pad %s:%s", GST_DEBUG_PAD_NAME (pad)); + ++ CHAIN_MUTEX_LOCK (chain); ++ chain->elements = ++ g_list_prepend (chain->elements, gst_object_ref (element)); ++ chain->demuxer = is_demuxer_element (element); ++ CHAIN_MUTEX_UNLOCK (chain); ++ + /* link this element further */ +- connect_element (dbin, element, group); ++ connect_element (dbin, element, chain); + + /* try to configure the subtitle encoding property when we can */ + if (g_object_class_find_property (G_OBJECT_GET_CLASS (element), +@@ -1310,10 +1343,22 @@ connect_pad (GstDecodeBin * dbin, GstElement * src, GstDecodePad * dpad, + /* Bring the element to the state of the parent */ + if ((gst_element_set_state (element, + GST_STATE_PAUSED)) == GST_STATE_CHANGE_FAILURE) { ++ GstElement *tmp = NULL; ++ + GST_WARNING_OBJECT (dbin, "Couldn't set %s to PAUSED", + GST_ELEMENT_NAME (element)); +- gst_element_set_state (element, GST_STATE_NULL); +- gst_bin_remove (GST_BIN (dbin), 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 { ++ tmp = chain->elements->data; ++ gst_element_set_state (tmp, GST_STATE_NULL); ++ gst_bin_remove (GST_BIN (dbin), tmp); ++ chain->elements = g_list_delete_link (chain->elements, chain->elements); ++ } while (tmp != element); ++ CHAIN_MUTEX_UNLOCK (chain); ++ + continue; + } + if (subtitle) { +@@ -1337,15 +1382,15 @@ beach: + + static gboolean + connect_element (GstDecodeBin * dbin, GstElement * element, +- GstDecodeGroup * group) ++ GstDecodeChain * chain) + { + GList *pads; + gboolean res = TRUE; + gboolean dynamic = FALSE; + GList *to_connect = NULL; + +- GST_DEBUG_OBJECT (dbin, "Attempting to connect element %s [group:%p] further", +- GST_ELEMENT_NAME (element), group); ++ GST_DEBUG_OBJECT (dbin, "Attempting to connect element %s [chain:%p] further", ++ GST_ELEMENT_NAME (element), chain); + + /* 1. Loop over pad templates, grabbing existing pads along the way */ + for (pads = GST_ELEMENT_GET_CLASS (element)->padtemplates; pads; +@@ -1406,31 +1451,16 @@ connect_element (GstDecodeBin * dbin, GstElement * element, + } + } + +- /* 2. if there are more potential pads, connect to relevent signals */ ++ /* 2. if there are more potential pads, connect to relevant signals */ + if (dynamic) { +- if (group) { +- GST_LOG_OBJECT (dbin, "Adding signals to element %s in group %p", +- GST_ELEMENT_NAME (element), group); +- GROUP_MUTEX_LOCK (group); +- group->nbdynamic++; +- GST_LOG_OBJECT (dbin, "Group %p has now %d dynamic elements", group, +- group->nbdynamic); +- GROUP_MUTEX_UNLOCK (group); +- g_signal_connect (G_OBJECT (element), "pad-added", +- G_CALLBACK (pad_added_group_cb), group); +- g_signal_connect (G_OBJECT (element), "pad-removed", +- G_CALLBACK (pad_removed_group_cb), group); +- g_signal_connect (G_OBJECT (element), "no-more-pads", +- G_CALLBACK (no_more_pads_group_cb), group); +- } else { +- /* This is a non-grouped element, the handlers are different */ +- g_signal_connect (G_OBJECT (element), "pad-added", +- G_CALLBACK (pad_added_cb), dbin); +- g_signal_connect (G_OBJECT (element), "pad-removed", +- G_CALLBACK (pad_removed_cb), dbin); +- g_signal_connect (G_OBJECT (element), "no-more-pads", +- G_CALLBACK (no_more_pads_cb), dbin); +- } ++ GST_LOG_OBJECT (dbin, "Adding signals to element %s in chain %p", ++ GST_ELEMENT_NAME (element), chain); ++ g_signal_connect (G_OBJECT (element), "pad-added", ++ G_CALLBACK (pad_added_cb), chain); ++ g_signal_connect (G_OBJECT (element), "pad-removed", ++ G_CALLBACK (pad_removed_cb), chain); ++ g_signal_connect (G_OBJECT (element), "no-more-pads", ++ G_CALLBACK (no_more_pads_cb), chain); + } + + /* 3. for every available pad, connect it */ +@@ -1439,7 +1469,7 @@ connect_element (GstDecodeBin * dbin, GstElement * element, + GstCaps *caps; + + caps = gst_pad_get_caps (pad); +- analyze_new_pad (dbin, element, pad, caps, group); ++ analyze_new_pad (dbin, element, pad, caps, chain); + if (caps) + gst_caps_unref (caps); + +@@ -1452,43 +1482,42 @@ connect_element (GstDecodeBin * dbin, GstElement * element, + + /* expose_pad: + * +- * Expose the given pad on the group as a decoded pad. +- * If group is NULL, a GstDecodeGroup will be created and setup properly. ++ * Expose the given pad on the chain as a decoded pad. + */ + static void + expose_pad (GstDecodeBin * dbin, GstElement * src, GstDecodePad * dpad, +- GstPad * pad, GstDecodeGroup * group) ++ GstPad * pad, GstDecodeChain * chain) + { +- gboolean newgroup = FALSE; +- gboolean isdemux; + GstPad *mqpad = NULL; + +- GST_DEBUG_OBJECT (dbin, "pad %s:%s, group:%p", +- GST_DEBUG_PAD_NAME (pad), group); +- +- isdemux = is_demuxer_element (src); +- +- if (!group) +- group = get_current_group (dbin, TRUE, isdemux, &newgroup); ++ GST_DEBUG_OBJECT (dbin, "pad %s:%s, chain:%p", ++ GST_DEBUG_PAD_NAME (pad), chain); + +- if (isdemux) { ++ /* If this is the first pad for this chain, there are no other elements ++ * and the source element is not the multiqueue we must link through the ++ * multiqueue. ++ * ++ * This is the case if a demuxer directly exposed a raw pad. ++ */ ++ if (chain->parent && !chain->elements && src != chain->parent->multiqueue) { + GST_LOG_OBJECT (src, "connecting the pad through multiqueue"); + + gst_ghost_pad_set_target (GST_GHOST_PAD (dpad), NULL); +- if (!(mqpad = gst_decode_group_control_demuxer_pad (group, pad))) ++ if (!(mqpad = gst_decode_group_control_demuxer_pad (chain->parent, pad))) + goto beach; + pad = mqpad; + gst_ghost_pad_set_target (GST_GHOST_PAD (dpad), pad); + } + +- gst_decode_group_control_source_pad (group, dpad); ++ gst_decode_pad_activate (dpad, chain); ++ chain->endpad = gst_object_ref (dpad); + +- if (newgroup && !isdemux) { +- /* If we have discovered a raw pad and it doesn't belong to any group, +- * that means there wasn't any demuxer. In that case, we consider the +- * group as being complete. */ +- gst_decode_group_set_complete (group); ++ EXPOSE_LOCK (dbin); ++ if (gst_decode_chain_is_complete (dbin->decode_chain)) { ++ gst_decode_bin_expose (dbin); + } ++ EXPOSE_UNLOCK (dbin); ++ + if (mqpad) + gst_object_unref (mqpad); + +@@ -1514,16 +1543,17 @@ type_found (GstElement * typefind, guint probability, + goto exit; + } + +- /* we can only deal with one type, we don't yet support dynamically changing ++ /* FIXME: we can only deal with one type, we don't yet support dynamically changing + * caps from the typefind element */ +- if (decode_bin->have_type) ++ if (decode_bin->have_type || decode_bin->decode_chain) + goto exit; + + decode_bin->have_type = TRUE; + + pad = gst_element_get_static_pad (typefind, "src"); + +- analyze_new_pad (decode_bin, typefind, pad, caps, NULL); ++ decode_bin->decode_chain = gst_decode_chain_new (decode_bin, NULL); ++ analyze_new_pad (decode_bin, typefind, pad, caps, decode_bin->decode_chain); + + gst_object_unref (pad); + +@@ -1532,133 +1562,116 @@ exit: + } + + static void +-pad_added_group_cb (GstElement * element, GstPad * pad, GstDecodeGroup * group) ++pad_added_cb (GstElement * element, GstPad * pad, GstDecodeChain * chain) + { + GstCaps *caps; +- gboolean expose = FALSE; + GstDecodeBin *dbin; + +- dbin = group->dbin; ++ dbin = chain->dbin; + +- GST_DEBUG_OBJECT (pad, "pad added, group:%p", group); ++ GST_DEBUG_OBJECT (pad, "pad added, chain:%p", chain); + + caps = gst_pad_get_caps (pad); +- analyze_new_pad (dbin, element, pad, caps, group); ++ analyze_new_pad (dbin, element, pad, caps, chain); + if (caps) + gst_caps_unref (caps); + +- GROUP_MUTEX_LOCK (group); +- if (group->nbdynamic > 0) +- group->nbdynamic--; +- GST_LOG_OBJECT (dbin, "Group %p has now %d dynamic objects", group, +- group->nbdynamic); +- if (group->nbdynamic == 0) +- expose = TRUE; +- GROUP_MUTEX_UNLOCK (group); +- +- if (expose) { ++ EXPOSE_LOCK (dbin); ++ if (gst_decode_chain_is_complete (dbin->decode_chain)) { + GST_LOG_OBJECT (dbin, + "That was the last dynamic object, now attempting to expose the group"); +- DECODE_BIN_LOCK (dbin); +- if (!gst_decode_group_expose (group)) ++ if (!gst_decode_bin_expose (dbin)) + GST_WARNING_OBJECT (dbin, "Couldn't expose group"); +- DECODE_BIN_UNLOCK (dbin); + } ++ EXPOSE_UNLOCK (dbin); + } + + static void +-pad_removed_group_cb (GstElement * element, GstPad * pad, +- GstDecodeGroup * group) ++pad_removed_cb (GstElement * element, GstPad * pad, GstDecodeChain * chain) + { +- GST_LOG_OBJECT (pad, "pad removed, group:%p", group); ++ 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) { ++ GstPad *opad = l->data; ++ ++ if (pad == opad) { ++ g_signal_handlers_disconnect_by_func (pad, caps_notify_cb, chain); ++ gst_object_unref (pad); ++ chain->pending_pads = g_list_delete_link (chain->pending_pads, l); ++ break; ++ } ++ } ++ CHAIN_MUTEX_UNLOCK (chain); + } + + static void +-no_more_pads_group_cb (GstElement * element, GstDecodeGroup * group) +-{ +- GST_LOG_OBJECT (element, "no more pads, setting group %p to complete", group); +- +- /* when we received no_more_pads, we can complete the pads of the group */ +- gst_decode_group_set_complete (group); +-} +- +-static void +-pad_added_cb (GstElement * element, GstPad * pad, GstDecodeBin * dbin) +-{ +- GstCaps *caps; +- +- GST_LOG_OBJECT (pad, "Pad added to non-grouped element"); +- +- caps = gst_pad_get_caps (pad); +- analyze_new_pad (dbin, element, pad, caps, NULL); +- if (caps) +- gst_caps_unref (caps); +-} +- +-static void +-pad_removed_cb (GstElement * element, GstPad * pad, GstDecodeBin * dbin) +-{ +- GST_LOG_OBJECT (pad, "Pad removed from non-grouped element"); +-} +- +-static void +-no_more_pads_cb (GstElement * element, GstDecodeBin * dbin) ++no_more_pads_cb (GstElement * element, GstDecodeChain * chain) + { +- GstDecodeGroup *group; +- +- GST_LOG_OBJECT (element, "No more pads, setting current group to complete"); +- +- /* Find the non-complete group, there should only be one */ +- if (!(group = get_current_group (dbin, FALSE, FALSE, NULL))) +- goto no_group; +- +- gst_decode_group_set_complete (group); ++ GstDecodeGroup *group = NULL; + +- return; ++ GST_LOG_OBJECT (element, "got no more pads"); + +-no_group: +- { +- GST_DEBUG_OBJECT (dbin, "We couldn't find a non-completed group"); ++ if (!chain->elements || (GstElement *) chain->elements->data != element) { ++ GST_LOG_OBJECT (chain->dbin, "no-more-pads from old chain element '%s'", ++ GST_OBJECT_NAME (element)); + return; + } +-} + +-static void +-caps_notify_cb (GstPad * pad, GParamSpec * unused, GstDecodeBin * dbin) +-{ +- GstElement *element; +- +- GST_LOG_OBJECT (dbin, "Notified caps for pad %s:%s", +- GST_DEBUG_PAD_NAME (pad)); +- +- /* Disconnect this; if we still need it, we'll reconnect to this in +- * analyze_new_pad */ +- g_signal_handlers_disconnect_by_func (pad, caps_notify_cb, dbin); ++ CHAIN_MUTEX_LOCK (chain); ++ /* when we received no_more_pads, we can complete the pads of the chain */ ++ if (!chain->next_groups && chain->active_group) { ++ group = chain->active_group; ++ } else if (chain->next_groups) { ++ group = chain->next_groups->data; ++ } ++ if (!group) { ++ GST_ERROR_OBJECT (chain->dbin, "can't find group for element"); ++ CHAIN_MUTEX_UNLOCK (chain); ++ return; ++ } + +- element = GST_ELEMENT_CAST (gst_pad_get_parent (pad)); ++ GST_DEBUG_OBJECT (element, "Setting group %p to complete", group); + +- pad_added_cb (element, pad, dbin); ++ group->no_more_pads = TRUE; ++ CHAIN_MUTEX_UNLOCK (chain); + +- gst_object_unref (element); ++ EXPOSE_LOCK (chain->dbin); ++ if (gst_decode_chain_is_complete (chain->dbin->decode_chain)) { ++ gst_decode_bin_expose (chain->dbin); ++ } ++ EXPOSE_UNLOCK (chain->dbin); + } + + static void +-caps_notify_group_cb (GstPad * pad, GParamSpec * unused, GstDecodeGroup * group) ++caps_notify_cb (GstPad * pad, GParamSpec * unused, GstDecodeChain * chain) + { + GstElement *element; ++ GList *l; + + GST_LOG_OBJECT (pad, "Notified caps for pad %s:%s", GST_DEBUG_PAD_NAME (pad)); + + /* Disconnect this; if we still need it, we'll reconnect to this in + * analyze_new_pad */ +- g_signal_handlers_disconnect_by_func (pad, caps_notify_group_cb, group); ++ g_signal_handlers_disconnect_by_func (pad, caps_notify_cb, chain); + + element = GST_ELEMENT_CAST (gst_pad_get_parent (pad)); + +- pad_added_group_cb (element, pad, group); ++ CHAIN_MUTEX_LOCK (chain); ++ for (l = chain->pending_pads; l; l = l->next) { ++ if (l->data == pad) { ++ gst_object_unref (GST_OBJECT_CAST (l->data)); ++ 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); + } +@@ -1721,25 +1734,204 @@ is_demuxer_element (GstElement * srcelement) + static gboolean + are_raw_caps (GstDecodeBin * dbin, GstCaps * caps) + { +- GstCaps *intersection; + gboolean res; + + GST_LOG_OBJECT (dbin, "Checking with caps %" GST_PTR_FORMAT, caps); + + /* lock for getting the caps */ + GST_OBJECT_LOCK (dbin); +- intersection = gst_caps_intersect (dbin->caps, caps); ++ res = gst_caps_can_intersect (dbin->caps, caps); + GST_OBJECT_UNLOCK (dbin); + +- res = (!(gst_caps_is_empty (intersection))); +- +- gst_caps_unref (intersection); +- + GST_LOG_OBJECT (dbin, "Caps are %sfinal caps", res ? "" : "not "); + + return res; + } + ++/**** ++ * GstDecodeChain functions ++ ****/ ++ ++/* gst_decode_chain_get_current_group: ++ * ++ * Returns the current group of this chain, to which ++ * new chains should be attached or NULL if the last ++ * group didn't have no-more-pads. ++ * ++ * Not MT-safe: Call with parent chain lock! ++ */ ++static GstDecodeGroup * ++gst_decode_chain_get_current_group (GstDecodeChain * chain) ++{ ++ GstDecodeGroup *group; ++ ++ if (!chain->next_groups && chain->active_group ++ && chain->active_group->overrun && !chain->active_group->no_more_pads) { ++ GST_WARNING_OBJECT (chain->dbin, ++ "Currently active group %p is exposed" ++ " and wants to add a new pad without having signaled no-more-pads", ++ chain->active_group); ++ return NULL; ++ } ++ ++ if (chain->next_groups && (group = chain->next_groups->data) && group->overrun ++ && !group->no_more_pads) { ++ GST_WARNING_OBJECT (chain->dbin, ++ "Currently newest pending group %p " ++ "had overflow but didn't signal no-more-pads", group); ++ return NULL; ++ } ++ ++ /* Now we know that we can really return something useful */ ++ if (!chain->active_group) { ++ chain->active_group = group = gst_decode_group_new (chain->dbin, chain); ++ } else if (!chain->active_group->overrun ++ && !chain->active_group->no_more_pads) { ++ group = chain->active_group; ++ } else if (chain->next_groups && (group = chain->next_groups->data) ++ && !group->overrun && !group->no_more_pads) { ++ /* group = chain->next_groups->data */ ++ } else { ++ group = gst_decode_group_new (chain->dbin, chain); ++ chain->next_groups = g_list_prepend (chain->next_groups, group); ++ } ++ ++ return group; ++} ++ ++static void gst_decode_group_free_internal (GstDecodeGroup * group, ++ gboolean hide); ++ ++static void ++gst_decode_chain_free_internal (GstDecodeChain * chain, gboolean hide) ++{ ++ GList *l; ++ ++ CHAIN_MUTEX_LOCK (chain); ++ ++ GST_DEBUG_OBJECT (chain->dbin, "%s chain %p", (hide ? "Hiding" : "Freeing"), ++ chain); ++ ++ if (chain->active_group) { ++ gst_decode_group_free_internal (chain->active_group, hide); ++ if (!hide) ++ chain->active_group = NULL; ++ } ++ ++ for (l = chain->next_groups; l; l = l->next) { ++ gst_decode_group_free_internal ((GstDecodeGroup *) l->data, hide); ++ if (!hide) ++ l->data = NULL; ++ } ++ if (!hide) { ++ g_list_free (chain->next_groups); ++ chain->next_groups = NULL; ++ } ++ ++ if (!hide) { ++ for (l = chain->old_groups; l; l = l->next) { ++ GstDecodeGroup *group = l->data; ++ ++ gst_decode_group_free (group); ++ } ++ g_list_free (chain->old_groups); ++ chain->old_groups = NULL; ++ } ++ ++ for (l = chain->pending_pads; l; l = l->next) { ++ GstPad *pad = GST_PAD (l->data); ++ ++ g_signal_handlers_disconnect_by_func (pad, caps_notify_cb, chain); ++ gst_object_unref (pad); ++ l->data = NULL; ++ } ++ g_list_free (chain->pending_pads); ++ chain->pending_pads = NULL; ++ ++ for (l = chain->elements; l; l = l->next) { ++ GstElement *element = GST_ELEMENT (l->data); ++ ++ g_signal_handlers_disconnect_by_func (element, pad_added_cb, chain); ++ g_signal_handlers_disconnect_by_func (element, pad_removed_cb, chain); ++ g_signal_handlers_disconnect_by_func (element, no_more_pads_cb, chain); ++ ++ if (GST_OBJECT_PARENT (element) == GST_OBJECT_CAST (chain->dbin)) ++ gst_bin_remove (GST_BIN_CAST (chain->dbin), element); ++ if (!hide) { ++ gst_element_set_state (element, GST_STATE_NULL); ++ } ++ ++ GST_OBJECT_LOCK (chain->dbin); ++ /* remove possible subtitle element */ ++ chain->dbin->subtitles = g_list_remove (chain->dbin->subtitles, element); ++ GST_OBJECT_UNLOCK (chain->dbin); ++ ++ if (!hide) { ++ gst_object_unref (element); ++ l->data = NULL; ++ } ++ } ++ if (!hide) { ++ g_list_free (chain->elements); ++ chain->elements = NULL; ++ } ++ ++ if (chain->endpad) { ++ if (chain->endpad->exposed) ++ gst_element_remove_pad (GST_ELEMENT_CAST (chain->dbin), ++ GST_PAD_CAST (chain->endpad)); ++ ++ chain->endpad->exposed = FALSE; ++ if (!hide) { ++ gst_object_unref (chain->endpad); ++ chain->endpad = NULL; ++ } ++ } ++ ++ GST_DEBUG_OBJECT (chain->dbin, "%s chain %p", (hide ? "Hided" : "Freed"), ++ chain); ++ CHAIN_MUTEX_UNLOCK (chain); ++ if (!hide) { ++ g_mutex_free (chain->lock); ++ g_slice_free (GstDecodeChain, chain); ++ } ++} ++ ++/* gst_decode_chain_free: ++ * ++ * Completely frees and removes the chain and all ++ * child groups from decodebin2. ++ * ++ * MT-safe, don't hold the chain lock or any child chain's lock ++ * when calling this! ++ */ ++static void ++gst_decode_chain_free (GstDecodeChain * chain) ++{ ++ gst_decode_chain_free_internal (chain, FALSE); ++} ++ ++/* gst_decode_chain_new: ++ * ++ * Creates a new decode chain and initializes it. ++ * ++ * It's up to the caller to add it to the list of child chains of ++ * a group! ++ */ ++static GstDecodeChain * ++gst_decode_chain_new (GstDecodeBin * dbin, GstDecodeGroup * parent) ++{ ++ GstDecodeChain *chain = g_slice_new0 (GstDecodeChain); ++ ++ GST_DEBUG_OBJECT (dbin, "Creating new chain %p with parent group %p", chain, ++ parent); ++ ++ chain->dbin = dbin; ++ chain->parent = parent; ++ chain->lock = g_mutex_new (); ++ ++ return chain; ++} + + /**** + * GstDecodeGroup functions +@@ -1754,135 +1946,152 @@ static void + multi_queue_overrun_cb (GstElement * queue, GstDecodeGroup * group) + { + GstDecodeBin *dbin; +- gboolean expose; + + dbin = group->dbin; + +- GST_LOG_OBJECT (dbin, "multiqueue %p is full", queue); ++ GST_LOG_OBJECT (dbin, "multiqueue '%s' (%p) is full", GST_OBJECT_NAME (queue), ++ queue); + +- GROUP_MUTEX_LOCK (group); +- if (group->complete) { +- /* the group was already complete (had the no_more_pads called), we +- * can ignore the overrun signal, the last remaining dynamic element +- * will expose the group eventually. */ +- GST_LOG_OBJECT (dbin, "group %p was already complete", group); +- expose = FALSE; +- } else { +- /* set number of dynamic element to 0, we don't expect anything anymore +- * and we need the groups to be 0 for the expose to work */ +- group->nbdynamic = 0; +- expose = TRUE; +- } +- GROUP_MUTEX_UNLOCK (group); ++ group->overrun = TRUE; ++ ++ /* FIXME: We should make sure that everything gets exposed now ++ * even if child chains are not complete because the will never ++ * be complete! Ignore any non-complete chains when exposing ++ * and never expose them later ++ */ + +- if (expose) { +- DECODE_BIN_LOCK (dbin); +- if (!gst_decode_group_expose (group)) ++ EXPOSE_LOCK (dbin); ++ if (gst_decode_chain_is_complete (dbin->decode_chain)) { ++ if (!gst_decode_bin_expose (dbin)) + GST_WARNING_OBJECT (dbin, "Couldn't expose group"); +- DECODE_BIN_UNLOCK (group->dbin); + } ++ EXPOSE_UNLOCK (group->dbin); + } + +-/* gst_decode_group_new: +- * +- * Creates a new GstDecodeGroup. It is up to the caller to add it to the list +- * of groups. +- */ +-static GstDecodeGroup * +-gst_decode_group_new (GstDecodeBin * dbin, gboolean use_queue) ++static void ++gst_decode_group_free_internal (GstDecodeGroup * group, gboolean hide) + { +- GstDecodeGroup *group; +- GstElement *mq; ++ GList *l; + +- GST_LOG_OBJECT (dbin, "Creating new group"); ++ GST_DEBUG_OBJECT (group->dbin, "%s group %p", (hide ? "Hiding" : "Freeing"), ++ group); ++ for (l = group->children; l; l = l->next) { ++ GstDecodeChain *chain = (GstDecodeChain *) l->data; + +- if (use_queue) { +- if (!(mq = gst_element_factory_make ("multiqueue", NULL))) { +- GST_ERROR_OBJECT (dbin, "Couldn't create multiqueue element"); +- return NULL; ++ gst_decode_chain_free_internal (chain, hide); ++ if (!hide) ++ l->data = NULL; ++ } ++ if (!hide) { ++ g_list_free (group->children); ++ group->children = NULL; ++ } ++ ++ if (!hide) { ++ for (l = group->reqpads; l; l = l->next) { ++ GstPad *pad = l->data; ++ ++ gst_element_release_request_pad (group->multiqueue, pad); ++ gst_object_unref (pad); ++ l->data = NULL; + } +- } else { +- mq = NULL; ++ g_list_free (group->reqpads); ++ group->reqpads = NULL; + } + +- group = g_new0 (GstDecodeGroup, 1); +- group->lock = g_mutex_new (); +- group->dbin = dbin; +- group->multiqueue = mq; +- group->exposed = FALSE; +- group->drained = FALSE; +- group->blocked = FALSE; +- group->complete = FALSE; +- group->endpads = NULL; +- group->reqpads = NULL; +- +- if (mq) { +- /* we first configure the multiqueue to buffer an unlimited number of +- * buffers up to 5 seconds or, when no timestamps are present, up to 2 MB of +- * memory. When this queue overruns, we assume the group is complete and can +- * be exposed. */ +- g_object_set (G_OBJECT (mq), +- "max-size-bytes", (guint) 2 * 1024 * 1024, +- "max-size-time", (guint64) 0, "max-size-buffers", (guint) 0, NULL); +- /* will expose the group */ +- group->overrunsig = g_signal_connect (G_OBJECT (mq), "overrun", +- G_CALLBACK (multi_queue_overrun_cb), group); +- +- gst_bin_add (GST_BIN (dbin), mq); +- gst_element_set_state (mq, GST_STATE_PAUSED); +- } +- +- GST_LOG_OBJECT (dbin, "Returning new group %p", group); ++ if (group->multiqueue) { ++ if (group->overrunsig) { ++ g_signal_handler_disconnect (group->multiqueue, group->overrunsig); ++ group->overrunsig = 0; ++ } + +- return group; ++ if (GST_OBJECT_PARENT (group->multiqueue) == GST_OBJECT_CAST (group->dbin)) ++ gst_bin_remove (GST_BIN_CAST (group->dbin), group->multiqueue); ++ if (!hide) { ++ gst_element_set_state (group->multiqueue, GST_STATE_NULL); ++ gst_object_unref (group->multiqueue); ++ group->multiqueue = NULL; ++ } ++ } ++ ++ GST_DEBUG_OBJECT (group->dbin, "%s group %p", (hide ? "Hided" : "Freed"), ++ group); ++ if (!hide) ++ g_slice_free (GstDecodeGroup, group); + } + +-/* get_current_group: +- * @dbin: the decodebin +- * @create: create the group when not present +- * @as_demux: create the group as a demuxer +- * @created: result when the group was created ++/* gst_decode_group_free: + * +- * Returns the current non-completed group. The dynamic refcount of the group is +- * increased when dealing with a demuxer. ++ * Completely frees and removes the decode group and all ++ * it's children. + * +- * Returns: %NULL if no groups are available, or all groups are completed. ++ * Never call this from any streaming thread! ++ * ++ * Not MT-safe, call with parent's chain lock! ++ */ ++static void ++gst_decode_group_free (GstDecodeGroup * group) ++{ ++ gst_decode_group_free_internal (group, FALSE); ++} ++ ++/* gst_decode_group_hide: ++ * ++ * Hide the decode group only, this means that ++ * all child endpads are removed from decodebin2 ++ * and all signals are unconnected. ++ * ++ * No element is set to NULL state and completely ++ * unreffed here. ++ * ++ * Can be called from streaming threads. ++ * ++ * Not MT-safe, call with parent's chain lock! ++ */ ++static void ++gst_decode_group_hide (GstDecodeGroup * group) ++{ ++ gst_decode_group_free_internal (group, TRUE); ++} ++ ++/* gst_decode_group_new: ++ * @dbin: Parent decodebin ++ * @parent: Parent chain or %NULL ++ * ++ * Creates a new GstDecodeGroup. It is up to the caller to add it to the list ++ * of groups. + */ + static GstDecodeGroup * +-get_current_group (GstDecodeBin * dbin, gboolean create, gboolean as_demux, +- gboolean * created) ++gst_decode_group_new (GstDecodeBin * dbin, GstDecodeChain * parent) + { +- GList *tmp; +- GstDecodeGroup *group = NULL; ++ GstDecodeGroup *group = g_slice_new0 (GstDecodeGroup); ++ GstElement *mq; + +- DECODE_BIN_LOCK (dbin); +- for (tmp = dbin->groups; tmp; tmp = g_list_next (tmp)) { +- GstDecodeGroup *this = (GstDecodeGroup *) tmp->data; ++ GST_DEBUG_OBJECT (dbin, "Creating new group %p with parent chain %p", group, ++ parent); + +- GROUP_MUTEX_LOCK (this); +- GST_LOG_OBJECT (dbin, "group %p, complete:%d", this, this->complete); ++ group->dbin = dbin; ++ group->parent = parent; + +- if (!this->complete) { +- group = this; +- GROUP_MUTEX_UNLOCK (this); +- break; +- } else { +- GROUP_MUTEX_UNLOCK (this); +- } +- } +- if (group == NULL && create) { +- group = gst_decode_group_new (dbin, as_demux); +- GST_LOG_OBJECT (dbin, "added group %p, demux %d", group, as_demux); +- dbin->groups = g_list_prepend (dbin->groups, group); +- if (created) +- *created = TRUE; +- /* demuxers are dynamic, we need no-more-pads or overrun now */ +- if (as_demux) +- group->nbdynamic++; ++ mq = group->multiqueue = gst_element_factory_make ("multiqueue", NULL); ++ if (G_UNLIKELY (!group->multiqueue)) { ++ gst_element_post_message (GST_ELEMENT_CAST (dbin), ++ gst_missing_element_message_new (GST_ELEMENT_CAST (dbin), ++ "multiqueue")); ++ GST_ELEMENT_ERROR (dbin, CORE, MISSING_PLUGIN, (NULL), ("no multiqueue!")); ++ g_slice_free (GstDecodeGroup, group); ++ return NULL; + } +- DECODE_BIN_UNLOCK (dbin); + +- GST_LOG_OBJECT (dbin, "Returning group %p", group); ++ g_object_set (G_OBJECT (mq), ++ "max-size-bytes", (guint) 2 * 1024 * 1024, ++ "max-size-time", (guint64) 0, "max-size-buffers", (guint) 0, NULL); ++ ++ group->overrunsig = g_signal_connect (G_OBJECT (mq), "overrun", ++ G_CALLBACK (multi_queue_overrun_cb), group); ++ ++ gst_bin_add (GST_BIN (dbin), gst_object_ref (mq)); ++ gst_element_set_state (mq, GST_STATE_PAUSED); + + return group; + } +@@ -1907,6 +2116,9 @@ gst_decode_group_control_demuxer_pad (GstDecodeGroup * group, GstPad * pad) + + srcpad = NULL; + ++ if (G_UNLIKELY (!group->multiqueue)) ++ return NULL; ++ + if (!(sinkpad = gst_element_get_request_pad (group->multiqueue, "sink%d"))) { + GST_ERROR_OBJECT (dbin, "Couldn't get sinkpad from multiqueue"); + return NULL; +@@ -1917,15 +2129,14 @@ gst_decode_group_control_demuxer_pad (GstDecodeGroup * group, GstPad * pad) + goto beach; + } + +- group->reqpads = g_list_prepend (group->reqpads, sinkpad); ++ CHAIN_MUTEX_LOCK (group->parent); ++ group->reqpads = g_list_prepend (group->reqpads, gst_object_ref (sinkpad)); + + sinkname = gst_pad_get_name (sinkpad); + nb = sinkname + 4; + srcname = g_strdup_printf ("src%s", nb); + g_free (sinkname); + +- GROUP_MUTEX_LOCK (group); +- + if (!(srcpad = gst_element_get_static_pad (group->multiqueue, srcname))) { + GST_ERROR_OBJECT (dbin, "Couldn't get srcpad %s from multiqueue", srcname); + goto chiringuito; +@@ -1933,163 +2144,224 @@ gst_decode_group_control_demuxer_pad (GstDecodeGroup * group, GstPad * pad) + + chiringuito: + g_free (srcname); +- GROUP_MUTEX_UNLOCK (group); ++ CHAIN_MUTEX_UNLOCK (group->parent); + + beach: + gst_object_unref (sinkpad); + return srcpad; + } + ++/* gst_decode_group_is_complete: ++ * ++ * Checks if the group is complete, this means that ++ * a) overrun of the multiqueue or no-more-pads happened ++ * b) all child chains are complete ++ * ++ * Not MT-safe, always call with decodebin expose lock ++ */ + static gboolean +-gst_decode_group_control_source_pad (GstDecodeGroup * group, +- GstDecodePad * dpad) ++gst_decode_group_is_complete (GstDecodeGroup * group) + { +- g_return_val_if_fail (group != NULL, FALSE); ++ GList *l; ++ gboolean complete = TRUE; + +- GST_DEBUG_OBJECT (dpad, "adding decode pad to group %p", group); ++ if (!group->overrun && !group->no_more_pads) { ++ complete = FALSE; ++ goto out; ++ } + +- /* FIXME : check if pad is already controlled */ +- gst_decode_pad_activate (dpad, group); ++ for (l = group->children; l; l = l->next) { ++ GstDecodeChain *chain = l->data; + +- GROUP_MUTEX_LOCK (group); +- group->endpads = g_list_prepend (group->endpads, gst_object_ref (dpad)); +- GROUP_MUTEX_UNLOCK (group); ++ if (!gst_decode_chain_is_complete (chain)) { ++ complete = FALSE; ++ goto out; ++ } ++ } + +- return TRUE; ++out: ++ GST_DEBUG_OBJECT (group->dbin, "Group %p is complete: %d", group, complete); ++ return complete; + } + +-/* gst_decode_group_check_if_blocked: ++/* gst_decode_chain_is_complete: + * +- * Call this when one of the pads blocked status has changed. +- * If the group is complete and blocked, the group will be marked as blocked +- * and will ghost/expose all pads on decodebin if the group is the current one. ++ * 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 + * +- * Call with the group lock taken ! MT safe +- * +- * Returns: TRUE when the group is completely blocked and ready to be exposed. ++ * Not MT-safe, always call with decodebin expose lock + */ + static gboolean +-gst_decode_group_check_if_blocked (GstDecodeGroup * group) ++gst_decode_chain_is_complete (GstDecodeChain * chain) + { +- GstDecodeBin *dbin; +- GList *tmp; +- gboolean blocked = TRUE; +- +- dbin = group->dbin; +- +- GST_LOG_OBJECT (dbin, "group : %p , ->complete:%d , ->nbdynamic:%d", +- group, group->complete, group->nbdynamic); ++ gboolean complete = FALSE; + +- /* don't do anything if group is not complete */ +- if (!group->complete || group->nbdynamic) { +- GST_DEBUG_OBJECT (group->dbin, "Group isn't complete yet"); +- return FALSE; ++ if (chain->deadend || (chain->endpad && chain->endpad->blocked)) { ++ complete = TRUE; ++ goto out; + } + +- for (tmp = group->endpads; tmp; tmp = g_list_next (tmp)) { +- GstDecodePad *dpad = (GstDecodePad *) tmp->data; +- +- if (!dpad->blocked) { +- blocked = FALSE; +- break; ++ if (chain->demuxer) { ++ if (chain->active_group ++ && gst_decode_group_is_complete (chain->active_group)) { ++ complete = TRUE; ++ goto out; + } + } + +- /* Update status of group */ +- group->blocked = blocked; +- GST_LOG_OBJECT (dbin, "group is blocked:%d", blocked); ++out: ++ GST_DEBUG_OBJECT (chain->dbin, "Chain %p is complete: %d", chain, complete); ++ return complete; ++} + +- return blocked; ++/* check if the group is drained, meaning all pads have seen an EOS ++ * event. */ ++static void ++gst_decode_pad_handle_eos (GstDecodePad * pad) ++{ ++ GstDecodeChain *chain = pad->chain; ++ ++ GST_LOG_OBJECT (pad->dbin, "chain : %p, pad %p", chain, pad); ++ pad->drained = TRUE; ++ gst_decode_chain_handle_eos (chain); + } + +-/* activate the next group when there is one ++/* gst_decode_chain_handle_eos: ++ * ++ * Checks if there are next groups in any parent chain ++ * to which we can switch or if everything is drained. + * +- * Returns: TRUE when group was the active group and there was a +- * next group to activate. ++ * If there are groups to switch to, hide the current active ++ * one and expose the new one. ++ * ++ * MT-safe, don't call with chain lock! + */ +-static gboolean +-gst_decode_bin_activate_next_group (GstDecodeBin * dbin, GstDecodeGroup * group) ++static void ++gst_decode_chain_handle_eos (GstDecodeChain * eos_chain) + { +- gboolean have_next = FALSE; +- +- DECODE_BIN_LOCK (dbin); +- /* Check if there is a next group to activate */ +- if ((group == dbin->activegroup) && dbin->groups) { +- GstDecodeGroup *newgroup; ++ GstDecodeBin *dbin = eos_chain->dbin; ++ GstDecodeGroup *group = eos_chain->parent; ++ GstDecodeChain *chain = eos_chain; ++ gboolean drained; + +- /* get the next group */ +- newgroup = (GstDecodeGroup *) dbin->groups->data; ++ g_return_if_fail (eos_chain->endpad); + +- GST_DEBUG_OBJECT (dbin, "Switching to new group"); ++ CHAIN_MUTEX_LOCK (chain); ++ while ((group = chain->parent)) { ++ CHAIN_MUTEX_UNLOCK (chain); ++ chain = group->parent; ++ CHAIN_MUTEX_LOCK (chain); + +- /* hide current group */ +- gst_decode_group_hide (group); +- /* expose next group */ +- gst_decode_group_expose (newgroup); +- +- /* we have a next group */ +- have_next = TRUE; ++ if (gst_decode_group_is_drained (group)) { ++ continue; ++ } ++ break; + } +- DECODE_BIN_UNLOCK (dbin); + +- return have_next; ++ drained = ++ chain->active_group ? gst_decode_group_is_drained (chain-> ++ active_group) : TRUE; ++ ++ /* Now either group == NULL and chain == dbin->decode_chain ++ * or chain is the lowest chain that has a non-drained group */ ++ if (chain->active_group && drained && chain->next_groups) { ++ GST_DEBUG_OBJECT (dbin, "Hiding current group %p", chain->active_group); ++ gst_decode_group_hide (chain->active_group); ++ chain->old_groups = g_list_prepend (chain->old_groups, chain->active_group); ++ GST_DEBUG_OBJECT (dbin, "Switching to next group %p", ++ chain->next_groups->data); ++ chain->active_group = chain->next_groups->data; ++ chain->next_groups = ++ g_list_delete_link (chain->next_groups, chain->next_groups); ++ CHAIN_MUTEX_UNLOCK (chain); ++ EXPOSE_LOCK (dbin); ++ if (gst_decode_chain_is_complete (dbin->decode_chain)) ++ gst_decode_bin_expose (dbin); ++ EXPOSE_UNLOCK (dbin); ++ } else if (!chain->active_group || drained) { ++ g_assert (chain == dbin->decode_chain); ++ CHAIN_MUTEX_UNLOCK (chain); ++ ++ GST_LOG_OBJECT (dbin, "all groups drained, fire signal"); ++ g_signal_emit (G_OBJECT (dbin), gst_decode_bin_signals[SIGNAL_DRAINED], 0, ++ NULL); ++ } else { ++ CHAIN_MUTEX_UNLOCK (chain); ++ GST_DEBUG_OBJECT (dbin, ++ "Current active group in chain %p is not drained yet", chain); ++ } + } + +-/* check if the group is drained, meaning all pads have seen an EOS +- * event. */ +-static void +-gst_decode_pad_handle_eos (GstDecodePad * pad) ++/* gst_decode_group_is_drained: ++ * ++ * Check is this group is drained and cache this result. ++ * The group is drained if all child chains are drained. ++ * ++ * Not MT-safe, call with group->parent's lock */ ++static gboolean ++gst_decode_group_is_drained (GstDecodeGroup * group) + { +- GList *tmp; +- GstDecodeBin *dbin; +- GstDecodeGroup *group; ++ GList *l; + gboolean drained = TRUE; + +- group = pad->group; +- dbin = group->dbin; ++ if (group->drained) { ++ drained = TRUE; ++ goto out; ++ } + +- GST_LOG_OBJECT (dbin, "group : %p, pad %p", group, pad); ++ for (l = group->children; l; l = l->next) { ++ GstDecodeChain *chain = l->data; + +- GROUP_MUTEX_LOCK (group); +- /* mark pad as drained */ +- pad->drained = TRUE; +- +- /* Ensure we only emit the drained signal once, for this group */ +- if (group->drained) +- goto was_drained; ++ CHAIN_MUTEX_LOCK (chain); ++ if (!gst_decode_chain_is_drained (chain)) ++ drained = FALSE; ++ CHAIN_MUTEX_UNLOCK (chain); ++ if (!drained) ++ goto out; ++ } ++ group->drained = drained; + +- for (tmp = group->endpads; tmp; tmp = g_list_next (tmp)) { +- GstDecodePad *dpad = (GstDecodePad *) tmp->data; ++out: ++ GST_DEBUG_OBJECT (group->dbin, "Group %p is drained: %d", group, drained); ++ return drained; ++} + +- GST_LOG_OBJECT (dbin, "testing dpad %p %d", dpad, dpad->drained); ++/* gst_decode_chain_is_drained: ++ * ++ * Check is the chain is drained, which means that ++ * either ++ * ++ * a) it's endpad is drained ++ * b) there are no pending pads, the active group is drained ++ * and there are no next groups ++ * ++ * Not MT-safe, call with chain lock ++ */ ++static gboolean ++gst_decode_chain_is_drained (GstDecodeChain * chain) ++{ ++ gboolean drained = FALSE; + +- if (!dpad->drained) { +- drained = FALSE; +- break; +- } ++ if (chain->endpad) { ++ drained = chain->endpad->drained; ++ goto out; + } +- group->drained = drained; +- GROUP_MUTEX_UNLOCK (group); +- +- if (drained) { +- /* the current group is completely drained, try to activate the next +- * group. this function returns FALSE if there was no next group activated +- * and so we are really drained. */ +- if (!gst_decode_bin_activate_next_group (dbin, group)) { +- /* no more groups to activate, we're completely drained now */ +- GST_LOG_OBJECT (dbin, "all groups drained, fire signal"); +- g_signal_emit (G_OBJECT (dbin), gst_decode_bin_signals[SIGNAL_DRAINED], 0, +- NULL); +- } ++ ++ if (chain->pending_pads) { ++ drained = FALSE; ++ goto out; + } +- return; + +-was_drained: +- { +- GST_LOG_OBJECT (dbin, "group was already drained"); +- GROUP_MUTEX_UNLOCK (group); +- return; ++ if (chain->active_group && gst_decode_group_is_drained (chain->active_group) ++ && !chain->next_groups) { ++ drained = TRUE; ++ goto out; + } ++ ++out: ++ GST_DEBUG_OBJECT (chain->dbin, "Chain %p is drained: %d", chain, drained); ++ return drained; + } + + /* sort_end_pads: +@@ -2100,7 +2372,6 @@ was_drained: + * + * Return: negative if a<b, 0 if a==b, positive if a>b + */ +- + static gint + sort_end_pads (GstDecodePad * da, GstDecodePad * db) + { +@@ -2146,74 +2417,62 @@ sort_end_pads (GstDecodePad * da, GstDecodePad * db) + return va - vb; + } + +-/* gst_decode_group_expose: +- * +- * Expose this group's pads. +- * +- * Not MT safe, please take the decodebin lock +- */ ++/* Must only be called if the toplevel chain is complete and blocked! */ ++/* Not MT-safe, call with decodebin expose lock! */ + static gboolean +-gst_decode_group_expose (GstDecodeGroup * group) ++gst_decode_bin_expose (GstDecodeBin * dbin) + { +- GList *tmp; +- GList *next = NULL; +- GstDecodeBin *dbin; ++ GList *tmp, *endpads = NULL; ++ gboolean already_exposed = TRUE; + +- dbin = group->dbin; ++ GST_DEBUG_OBJECT (dbin, "Exposing currently active chains/groups"); + +- GST_DEBUG_OBJECT (dbin, "going to expose group %p", group); +- +- if (group->nbdynamic) { +- GST_DEBUG_OBJECT (dbin, +- "Group %p still has %d dynamic objects, not exposing yet", group, +- group->nbdynamic); ++ /* Get the pads that we're going to expose and mark things as exposed */ ++ if (!gst_decode_chain_expose (dbin->decode_chain, &endpads)) { ++ g_list_foreach (endpads, (GFunc) gst_object_unref, NULL); ++ g_list_free (endpads); ++ GST_ERROR_OBJECT (dbin, "Broken chain/group tree"); ++ g_return_val_if_reached (FALSE); + return FALSE; + } +- +- if (dbin->activegroup == group) { +- GST_DEBUG_OBJECT (dbin, "Group %p is already exposed, all is fine", group); +- return TRUE; ++ if (endpads == NULL) { ++ GST_WARNING_OBJECT (dbin, "No suitable plugins found"); ++ GST_ELEMENT_ERROR (dbin, CORE, MISSING_PLUGIN, (NULL), ++ ("no suitable plugins found")); ++ return FALSE; + } + +- if (group->multiqueue) { +- /* update runtime limits. At runtime, we try to keep the amount of buffers +- * in the queues as low as possible (but at least 5 buffers). */ +- g_object_set (G_OBJECT (group->multiqueue), +- "max-size-bytes", 2 * 1024 * 1024, "max-size-buffers", 5, NULL); +- /* we can now disconnect any overrun signal, which is used to expose the +- * group. */ +- if (group->overrunsig) { +- GST_LOG_OBJECT (dbin, "Disconnecting overrun"); +- g_signal_handler_disconnect (group->multiqueue, group->overrunsig); +- group->overrunsig = 0; +- } +- } ++ /* Check if this was called when everything was exposed already */ ++ for (tmp = endpads; tmp && already_exposed; tmp = tmp->next) { ++ GstDecodePad *dpad = tmp->data; + +- if (dbin->activegroup) { +- GST_DEBUG_OBJECT (dbin, +- "another group %p is already exposed, waiting for EOS", +- dbin->activegroup); ++ already_exposed &= dpad->exposed; ++ if (!already_exposed) ++ break; ++ } ++ if (already_exposed) { ++ GST_DEBUG_OBJECT (dbin, "Everything was exposed already!"); ++ g_list_foreach (endpads, (GFunc) gst_object_unref, NULL); ++ g_list_free (endpads); + return TRUE; + } + +- if (!dbin->groups || (group != (GstDecodeGroup *) dbin->groups->data)) { +- GST_WARNING_OBJECT (dbin, "Group %p is not the first group to expose", +- group); +- return FALSE; +- } ++ /* Set all already exposed pads to blocked */ ++ for (tmp = endpads; tmp; tmp = tmp->next) { ++ GstDecodePad *dpad = tmp->data; + +- GST_LOG_OBJECT (dbin, "Exposing group %p", group); ++ if (dpad->exposed) ++ gst_decode_pad_set_blocked (dpad, TRUE); ++ } + + /* re-order pads : video, then audio, then others */ +- group->endpads = g_list_sort (group->endpads, (GCompareFunc) sort_end_pads); ++ endpads = g_list_sort (endpads, (GCompareFunc) sort_end_pads); + + /* Expose pads */ +- for (tmp = group->endpads; tmp; tmp = next) { ++ for (tmp = endpads; tmp; tmp = tmp->next) { + GstDecodePad *dpad = (GstDecodePad *) tmp->data; + gchar *padname; + +- next = g_list_next (tmp); +- + /* 1. rewrite name */ + padname = g_strdup_printf ("src%d", dbin->nbpads); + dbin->nbpads++; +@@ -2223,18 +2482,19 @@ gst_decode_group_expose (GstDecodeGroup * group) + g_free (padname); + + /* 2. activate and add */ +- if (!gst_element_add_pad (GST_ELEMENT (dbin), GST_PAD (dpad))) { ++ if (!dpad->exposed ++ && !gst_element_add_pad (GST_ELEMENT (dbin), GST_PAD (dpad))) { + /* not really fatal, we can try to add the other pads */ + g_warning ("error adding pad to decodebin2"); + continue; + } +- dpad->added = TRUE; ++ dpad->exposed = TRUE; + + /* 3. emit signal */ + GST_DEBUG_OBJECT (dbin, "emitting new-decoded-pad"); + g_signal_emit (G_OBJECT (dbin), + gst_decode_bin_signals[SIGNAL_NEW_DECODED_PAD], 0, dpad, +- (next == NULL)); ++ (tmp->next == NULL)); + GST_DEBUG_OBJECT (dbin, "emitted new-decoded-pad"); + } + +@@ -2245,223 +2505,73 @@ gst_decode_group_expose (GstDecodeGroup * group) + + /* 4. Unblock internal pads. The application should have connected stuff now + * so that streaming can continue. */ +- for (tmp = group->endpads; tmp; tmp = next) { ++ for (tmp = endpads; tmp; tmp = tmp->next) { + GstDecodePad *dpad = (GstDecodePad *) tmp->data; + +- next = g_list_next (tmp); +- + GST_DEBUG_OBJECT (dpad, "unblocking"); + gst_decode_pad_unblock (dpad); + GST_DEBUG_OBJECT (dpad, "unblocked"); ++ gst_object_unref (dpad); + } +- +- dbin->activegroup = group; +- +- /* pop off the first group */ +- if (dbin->groups && dbin->groups->data) { +- GST_LOG_OBJECT (dbin, "removed group %p", dbin->groups->data); +- dbin->groups = g_list_delete_link (dbin->groups, dbin->groups); +- } else { +- GST_LOG_OBJECT (dbin, "no more groups"); +- } ++ g_list_free (endpads); + + do_async_done (dbin); +- +- group->exposed = TRUE; +- +- GST_LOG_OBJECT (dbin, "Group %p exposed", group); ++ GST_DEBUG_OBJECT (dbin, "Exposed everything"); + return TRUE; + } + +-/* must be called with the decodebin lock */ +-static void +-gst_decode_group_hide (GstDecodeGroup * group) +-{ +- GList *tmp; +- GstDecodeBin *dbin; +- +- dbin = group->dbin; +- +- GST_LOG_OBJECT (dbin, "Hiding group %p", group); +- +- if (group != dbin->activegroup) { +- GST_WARNING_OBJECT (dbin, "This group is not the active one, ignoring"); +- return; +- } +- +- GROUP_MUTEX_LOCK (group); +- /* Remove ghost pads */ +- for (tmp = group->endpads; tmp; tmp = g_list_next (tmp)) { +- GstDecodePad *dpad = (GstDecodePad *) tmp->data; +- +- if (dpad->added) +- gst_element_remove_pad (GST_ELEMENT (group->dbin), GST_PAD (dpad)); +- dpad->added = FALSE; +- } +- group->exposed = FALSE; +- GROUP_MUTEX_UNLOCK (group); +- +- group->dbin->activegroup = NULL; +- group->dbin->oldgroups = g_list_prepend (group->dbin->oldgroups, group); +-} +- +-static void +-deactivate_free_recursive (GstDecodeGroup * group, GstElement * element) ++/* gst_decode_chain_expose: ++ * ++ * Check if the chain can be exposed and add all endpads ++ * to the endpads list. ++ * ++ * Also update the active group's multiqueue to the ++ * runtime limits. ++ * ++ * Not MT-safe, call with decodebin expose lock! * ++ */ ++static gboolean ++gst_decode_chain_expose (GstDecodeChain * chain, GList ** endpads) + { +- GstIterator *it; +- GstIteratorResult res; +- gpointer point; +- GstDecodeBin *dbin; +- +- dbin = group->dbin; +- +- GST_LOG_OBJECT (dbin, "element:%s", GST_ELEMENT_NAME (element)); +- +- /* call on downstream elements */ +- it = gst_element_iterate_src_pads (element); +- +-restart: +- +- while (1) { +- res = gst_iterator_next (it, &point); +- switch (res) { +- case GST_ITERATOR_DONE: +- goto done; +- case GST_ITERATOR_RESYNC: +- gst_iterator_resync (it); +- goto restart; +- case GST_ITERATOR_ERROR: +- { +- GST_WARNING_OBJECT (dbin, +- "Had an error while iterating source pads of element: %s", +- GST_ELEMENT_NAME (element)); +- goto beach; +- } +- case GST_ITERATOR_OK: +- { +- GstPad *pad = GST_PAD (point); +- GstPad *peerpad = NULL; +- +- if ((peerpad = gst_pad_get_peer (pad))) { +- GstObject *parent; ++ GstDecodeGroup *group; ++ GList *l; + +- parent = gst_pad_get_parent (peerpad); +- gst_object_unref (peerpad); ++ if (chain->deadend) ++ return TRUE; + +- if (parent && GST_IS_ELEMENT (parent)) +- deactivate_free_recursive (group, GST_ELEMENT (parent)); +- if (parent) +- gst_object_unref (parent); +- } +- } +- break; +- default: +- break; +- } ++ if (chain->endpad) { ++ if (!chain->endpad->blocked) ++ return FALSE; ++ *endpads = g_list_prepend (*endpads, gst_object_ref (chain->endpad)); ++ return TRUE; + } + +-done: +- gst_element_set_state (element, GST_STATE_NULL); +- GST_OBJECT_LOCK (dbin); +- /* remove possible subtitle element */ +- dbin->subtitles = g_list_remove (dbin->subtitles, element); +- GST_OBJECT_UNLOCK (dbin); +- gst_bin_remove (GST_BIN (dbin), element); +- +-beach: +- gst_iterator_free (it); +- +- return; +-} +- +-static void +-gst_decode_group_free (GstDecodeGroup * group) +-{ +- GstDecodeBin *dbin; +- GList *tmp; +- +- dbin = group->dbin; +- +- GST_LOG_OBJECT (dbin, "group %p", group); +- +- GROUP_MUTEX_LOCK (group); +- +- /* remove exposed pads */ +- if (group == dbin->activegroup) { +- for (tmp = group->endpads; tmp; tmp = g_list_next (tmp)) { +- GstDecodePad *dpad = (GstDecodePad *) tmp->data; ++ group = chain->active_group; ++ if (!group) ++ return FALSE; ++ if (!group->no_more_pads && !group->overrun) ++ return FALSE; + +- if (dpad->added) +- gst_element_remove_pad (GST_ELEMENT (dbin), GST_PAD (dpad)); +- dpad->added = FALSE; +- } ++ /* update runtime limits. At runtime, we try to keep the amount of buffers ++ * in the queues as low as possible (but at least 5 buffers). */ ++ g_object_set (G_OBJECT (group->multiqueue), ++ "max-size-bytes", 2 * 1024 * 1024, "max-size-buffers", 5, NULL); ++ /* we can now disconnect any overrun signal, which is used to expose the ++ * group. */ ++ if (group->overrunsig) { ++ GST_LOG_OBJECT (group->dbin, "Disconnecting overrun"); ++ g_signal_handler_disconnect (group->multiqueue, group->overrunsig); ++ group->overrunsig = 0; + } + +- /* Clear all GstDecodePad */ +- for (tmp = group->endpads; tmp; tmp = g_list_next (tmp)) +- gst_object_unref (tmp->data); +- g_list_free (group->endpads); +- group->endpads = NULL; ++ for (l = group->children; l; l = l->next) { ++ GstDecodeChain *childchain = l->data; + +- /* release request pads */ +- for (tmp = group->reqpads; tmp; tmp = g_list_next (tmp)) { +- gst_element_release_request_pad (group->multiqueue, GST_PAD (tmp->data)); ++ if (!gst_decode_chain_expose (childchain, endpads)) ++ return FALSE; + } +- g_list_free (group->reqpads); +- group->reqpads = NULL; + +- /* disconnect signal handlers on multiqueue */ +- if (group->multiqueue) { +- if (group->overrunsig) +- g_signal_handler_disconnect (group->multiqueue, group->overrunsig); +- deactivate_free_recursive (group, group->multiqueue); +- } +- +- /* remove all elements */ +- +- GROUP_MUTEX_UNLOCK (group); +- +- g_mutex_free (group->lock); +- g_free (group); +-} +- +-/* gst_decode_group_set_complete: +- * +- * Mark the group as complete. This means no more streams will be controlled +- * through this group. This method is usually called when we got no_more_pads or +- * when we added the last pad not from a demuxer. +- * +- * When this method is called, it is possible that some dynamic plugging is +- * going on in streaming threads. We decrement the dynamic counter and when it +- * reaches zero, we check if all of our pads are blocked before we finally +- * expose the group. +- * +- * MT safe +- */ +-static void +-gst_decode_group_set_complete (GstDecodeGroup * group) +-{ +- gboolean expose = FALSE; +- GstDecodeBin *dbin; +- +- dbin = group->dbin; +- +- GST_LOG_OBJECT (dbin, "Setting group %p to COMPLETE", group); +- +- GROUP_MUTEX_LOCK (group); +- group->complete = TRUE; +- if (group->nbdynamic > 0) +- group->nbdynamic--; +- expose = gst_decode_group_check_if_blocked (group); +- GROUP_MUTEX_UNLOCK (group); +- +- /* don't do anything if not blocked completely */ +- if (expose) { +- DECODE_BIN_LOCK (dbin); +- if (!gst_decode_group_expose (group)) +- GST_WARNING_OBJECT (dbin, "Couldn't expose group"); +- DECODE_BIN_UNLOCK (dbin); +- } ++ return TRUE; + } + + /************************* +@@ -2476,37 +2586,34 @@ gst_decode_pad_class_init (GstDecodePadClass * klass) + static void + gst_decode_pad_init (GstDecodePad * pad) + { +- pad->group = NULL; ++ pad->chain = NULL; + pad->blocked = FALSE; ++ pad->exposed = FALSE; + pad->drained = FALSE; + gst_object_ref (pad); + gst_object_sink (pad); + } + + static void +-source_pad_blocked_cb (GstPad * opad, gboolean blocked, GstDecodePad * dpad) ++source_pad_blocked_cb (GstPad * pad, gboolean blocked, GstDecodePad * dpad) + { +- GstDecodeGroup *group; ++ GstDecodeChain *chain; + GstDecodeBin *dbin; +- gboolean expose = FALSE; + +- group = dpad->group; +- dbin = group->dbin; ++ chain = dpad->chain; ++ dbin = chain->dbin; + +- GST_LOG_OBJECT (dpad, "blocked:%d, dpad->group:%p", blocked, group); ++ GST_LOG_OBJECT (dpad, "blocked:%d, dpad->chain:%p", blocked, chain); + +- GROUP_MUTEX_LOCK (group); +- /* Update this GstDecodePad status */ + dpad->blocked = blocked; +- if (blocked) +- expose = gst_decode_group_check_if_blocked (group); +- GROUP_MUTEX_UNLOCK (group); + +- if (expose) { +- DECODE_BIN_LOCK (dbin); +- if (!gst_decode_group_expose (group)) +- GST_WARNING_OBJECT (dbin, "Couldn't expose group"); +- DECODE_BIN_UNLOCK (dbin); ++ if (dpad->blocked) { ++ EXPOSE_LOCK (dbin); ++ if (gst_decode_chain_is_complete (dbin->decode_chain)) { ++ if (!gst_decode_bin_expose (dbin)) ++ GST_WARNING_OBJECT (dbin, "Couldn't expose group"); ++ } ++ EXPOSE_UNLOCK (dbin); + } + } + +@@ -2533,7 +2640,7 @@ gst_decode_pad_set_blocked (GstDecodePad * dpad, gboolean blocked) + GstDecodeBin *dbin = dpad->dbin; + GstPad *opad; + +- DECODE_BIN_DYN_LOCK (dbin); ++ DYN_LOCK (dbin); + opad = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (dpad)); + if (!opad) + goto out; +@@ -2550,13 +2657,16 @@ gst_decode_pad_set_blocked (GstDecodePad * dpad, gboolean blocked) + dbin->blocked_pads = g_list_prepend (dbin->blocked_pads, dpad); + } + } else { +- if (g_list_find (dbin->blocked_pads, dpad)) ++ GList *l; ++ ++ if ((l = g_list_find (dbin->blocked_pads, dpad))) { + gst_object_unref (dpad); +- dbin->blocked_pads = g_list_remove (dbin->blocked_pads, dpad); ++ dbin->blocked_pads = g_list_delete_link (dbin->blocked_pads, l); ++ } + } + gst_object_unref (opad); + out: +- DECODE_BIN_DYN_UNLOCK (dbin); ++ DYN_UNLOCK (dbin); + } + + static void +@@ -2567,11 +2677,11 @@ gst_decode_pad_add_drained_check (GstDecodePad * dpad) + } + + static void +-gst_decode_pad_activate (GstDecodePad * dpad, GstDecodeGroup * group) ++gst_decode_pad_activate (GstDecodePad * dpad, GstDecodeChain * chain) + { +- g_return_if_fail (group != NULL); ++ g_return_if_fail (chain != NULL); + +- dpad->group = group; ++ dpad->chain = chain; + gst_pad_set_active (GST_PAD (dpad), TRUE); + gst_decode_pad_set_blocked (dpad, TRUE); + gst_decode_pad_add_drained_check (dpad); +@@ -2588,7 +2698,7 @@ gst_decode_pad_unblock (GstDecodePad * dpad) + * Creates a new GstDecodePad for the given pad. + */ + static GstDecodePad * +-gst_decode_pad_new (GstDecodeBin * dbin, GstPad * pad, GstDecodeGroup * group) ++gst_decode_pad_new (GstDecodeBin * dbin, GstPad * pad, GstDecodeChain * chain) + { + GstDecodePad *dpad; + +@@ -2597,7 +2707,7 @@ gst_decode_pad_new (GstDecodeBin * dbin, GstPad * pad, GstDecodeGroup * group) + NULL); + gst_ghost_pad_construct (GST_GHOST_PAD (dpad)); + gst_ghost_pad_set_target (GST_GHOST_PAD (dpad), pad); +- dpad->group = group; ++ dpad->chain = chain; + dpad->dbin = dbin; + + return dpad; +@@ -2663,13 +2773,12 @@ find_sink_pad (GstElement * element) + static void + unblock_pads (GstDecodeBin * dbin) + { +- GList *tmp, *next; ++ GList *tmp; + +- for (tmp = dbin->blocked_pads; tmp; tmp = next) { ++ for (tmp = dbin->blocked_pads; tmp; tmp = tmp->next) { + GstDecodePad *dpad = (GstDecodePad *) tmp->data; + GstPad *opad = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (dpad)); + +- next = g_list_next (tmp); + if (!opad) + continue; + +@@ -2701,20 +2810,20 @@ gst_decode_bin_change_state (GstElement * element, GstStateChange transition) + goto missing_typefind; + break; + case GST_STATE_CHANGE_READY_TO_PAUSED: +- DECODE_BIN_DYN_LOCK (dbin); ++ DYN_LOCK (dbin); + GST_LOG_OBJECT (dbin, "clearing shutdown flag"); + dbin->shutdown = FALSE; +- DECODE_BIN_DYN_UNLOCK (dbin); ++ DYN_UNLOCK (dbin); + dbin->have_type = FALSE; + ret = GST_STATE_CHANGE_ASYNC; + do_async_start (dbin); + break; + case GST_STATE_CHANGE_PAUSED_TO_READY: +- DECODE_BIN_DYN_LOCK (dbin); ++ DYN_LOCK (dbin); + GST_LOG_OBJECT (dbin, "setting shutdown flag"); + dbin->shutdown = TRUE; + unblock_pads (dbin); +- DECODE_BIN_DYN_UNLOCK (dbin); ++ DYN_UNLOCK (dbin); + default: + break; + } +@@ -2733,11 +2842,12 @@ gst_decode_bin_change_state (GstElement * element, GstStateChange transition) + switch (transition) { + case GST_STATE_CHANGE_PAUSED_TO_READY: + do_async_done (dbin); +- gst_decode_bin_remove_groups (dbin); ++ if (dbin->decode_chain) { ++ gst_decode_chain_free (dbin->decode_chain); ++ dbin->decode_chain = NULL; ++ } + break; + case GST_STATE_CHANGE_READY_TO_NULL: +- gst_decode_bin_remove_groups (dbin); +- break; + default: + break; + } +-- +1.6.4.3 + +From 5ee4ee1682cff7ca44897fec0dcee6374cd6636d Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege(a)collabora.co.uk&gt; +Date: Thu, 24 Sep 2009 14:56:48 +0200 +Subject: [PATCH 5/7] uridecodebin: Don't post missing plugin messages twice + +decodebin2 already posts them after emitting the unknown-type signal, +there's no need to post another one. +--- + gst/playback/gsturidecodebin.c | 6 ------ + 1 files changed, 0 insertions(+), 6 deletions(-) + +diff --git a/gst/playback/gsturidecodebin.c b/gst/playback/gsturidecodebin.c +index 0e0bb74..6420414 100644 +--- a/gst/playback/gsturidecodebin.c ++++ b/gst/playback/gsturidecodebin.c +@@ -33,8 +33,6 @@ + #include <gst/gst.h> + #include <gst/gst-i18n-plugin.h> + +-#include <gst/pbutils/missing-plugins.h> +- + #include "gstfactorylists.h" + #include "gstplay-marshal.h" + #include "gstplay-enum.h" +@@ -622,12 +620,8 @@ static void + unknown_type_cb (GstElement * element, GstPad * pad, GstCaps * caps, + GstURIDecodeBin * decoder) + { +- GstMessage *msg; + gchar *capsstr; + +- msg = gst_missing_decoder_message_new (GST_ELEMENT_CAST (decoder), caps); +- gst_element_post_message (GST_ELEMENT_CAST (decoder), msg); +- + capsstr = gst_caps_to_string (caps); + GST_ELEMENT_WARNING (decoder, CORE, MISSING_PLUGIN, + (_("No decoder available for type \'%s\'."), capsstr), (NULL)); +-- +1.6.4.3 + +From 4a7f2e6c102eeefa7da8e7c9c2eec3c0019bba01 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege(a)collabora.co.uk&gt; +Date: Sat, 26 Sep 2009 12:47:53 +0200 +Subject: [PATCH 6/7] decodebin2: Use the iterate internal links function instead of string magic to get multiqueue srcpads + +--- + gst/playback/gstdecodebin2.c | 31 +++++++++++++++++-------------- + 1 files changed, 17 insertions(+), 14 deletions(-) + +diff --git a/gst/playback/gstdecodebin2.c b/gst/playback/gstdecodebin2.c +index 1d6c9d2..4fe62b4 100644 +--- a/gst/playback/gstdecodebin2.c ++++ b/gst/playback/gstdecodebin2.c +@@ -2108,7 +2108,7 @@ gst_decode_group_control_demuxer_pad (GstDecodeGroup * group, GstPad * pad) + { + GstDecodeBin *dbin; + GstPad *srcpad, *sinkpad; +- gchar *nb, *sinkname, *srcname; ++ GstIterator *it = NULL; + + dbin = group->dbin; + +@@ -2126,29 +2126,32 @@ gst_decode_group_control_demuxer_pad (GstDecodeGroup * group, GstPad * pad) + + if ((gst_pad_link (pad, sinkpad) != GST_PAD_LINK_OK)) { + GST_ERROR_OBJECT (dbin, "Couldn't link demuxer and multiqueue"); +- goto beach; ++ goto error; + } + +- CHAIN_MUTEX_LOCK (group->parent); +- group->reqpads = g_list_prepend (group->reqpads, gst_object_ref (sinkpad)); +- +- sinkname = gst_pad_get_name (sinkpad); +- nb = sinkname + 4; +- srcname = g_strdup_printf ("src%s", nb); +- g_free (sinkname); ++ it = gst_pad_iterate_internal_links (sinkpad); + +- if (!(srcpad = gst_element_get_static_pad (group->multiqueue, srcname))) { +- GST_ERROR_OBJECT (dbin, "Couldn't get srcpad %s from multiqueue", srcname); +- goto chiringuito; ++ if (!it || (gst_iterator_next (it, (gpointer *) & srcpad)) != GST_ITERATOR_OK ++ || srcpad == NULL) { ++ GST_ERROR_OBJECT (dbin, ++ "Couldn't get srcpad from multiqueue for sinkpad %" GST_PTR_FORMAT, ++ sinkpad); ++ goto error; + } + +-chiringuito: +- g_free (srcname); ++ CHAIN_MUTEX_LOCK (group->parent); ++ group->reqpads = g_list_prepend (group->reqpads, gst_object_ref (sinkpad)); + CHAIN_MUTEX_UNLOCK (group->parent); + + beach: ++ if (it) ++ gst_iterator_free (it); + gst_object_unref (sinkpad); + return srcpad; ++ ++error: ++ gst_element_release_request_pad (group->multiqueue, sinkpad); ++ goto beach; + } + + /* gst_decode_group_is_complete: +-- +1.6.4.3 + +From 68cef57e9260265229d194f1309cdffd654c95b6 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian.droege(a)collabora.co.uk&gt; +Date: Sat, 26 Sep 2009 12:56:36 +0200 +Subject: [PATCH 7/7] decodebin2: Chains with an exposed endpad are complete too + +This allows partial group changes, i.e. demuxer2 in the example below +goes EOS but has a next group and audio2 stays the same. + + /-- >demuxer2---->video +demuxer--- \--->audio1 + \--->audio2 +--- + gst/playback/gstdecodebin2.c | 11 ++++++++--- + 1 files changed, 8 insertions(+), 3 deletions(-) + +diff --git a/gst/playback/gstdecodebin2.c b/gst/playback/gstdecodebin2.c +index 4fe62b4..60dbf57 100644 +--- a/gst/playback/gstdecodebin2.c ++++ b/gst/playback/gstdecodebin2.c +@@ -2191,7 +2191,7 @@ out: + * + * 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 ++ * b) This chain ends in an endpad and this is blocked or exposed + * + * Not MT-safe, always call with decodebin expose lock + */ +@@ -2200,7 +2200,12 @@ gst_decode_chain_is_complete (GstDecodeChain * chain) + { + gboolean complete = FALSE; + +- if (chain->deadend || (chain->endpad && chain->endpad->blocked)) { ++ if (chain->deadend) { ++ complete = TRUE; ++ goto out; ++ } ++ ++ if (chain->endpad && (chain->endpad->blocked || chain->endpad->exposed)) { + complete = TRUE; + goto out; + } +@@ -2543,7 +2548,7 @@ gst_decode_chain_expose (GstDecodeChain * chain, GList ** endpads) + return TRUE; + + if (chain->endpad) { +- if (!chain->endpad->blocked) ++ if (!chain->endpad->blocked && !chain->endpad->exposed) + return FALSE; + *endpads = g_list_prepend (*endpads, gst_object_ref (chain->endpad)); + return TRUE; +-- +1.6.4.3 + diff --git a/gstpb-no-subtitle-errors.patch b/gstpb-no-subtitle-errors.patch new file mode 100644 index 0000000..e6b4dd1 --- /dev/null +++ b/gstpb-no-subtitle-errors.patch @@ -0,0 +1,164 @@ +commit a4bc39ef4836abcf16bd9d451ed89979ff090c0d +Author: Sebastian Dröge <sebastian.droege(a)collabora.co.uk&gt; +Date: Thu Oct 8 19:55:42 2009 +0200 + + playbin2: Don't stop completely on initialization errors from subtitle elements + + Instead disable the subtitles and play the other parts of the stream. + + Fixes bug #587704. + +diff --git a/gst/playback/gstplaybin2.c b/gst/playback/gstplaybin2.c +index b2f41a6..c134036 100644 +--- a/gst/playback/gstplaybin2.c ++++ b/gst/playback/gstplaybin2.c +@@ -522,6 +522,10 @@ static GstPad *gst_play_bin_get_text_pad (GstPlayBin * playbin, gint stream); + + static gboolean setup_next_source (GstPlayBin * playbin, GstState target); + ++static void no_more_pads_cb (GstElement * decodebin, GstSourceGroup * group); ++static void pad_removed_cb (GstElement * decodebin, GstPad * pad, ++ GstSourceGroup * group); ++ + static GstElementClass *parent_class; + + static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 }; +@@ -532,6 +536,12 @@ GST_ELEMENT_DETAILS ("Player Bin 2", + "Autoplug and play media from an uri", + "Wim Taymans <wim.taymans(a)gmail.com&gt;&quot;); + ++#define REMOVE_SIGNAL(obj,id) \ ++if (id) { \ ++ g_signal_handler_disconnect (obj, id); \ ++ id = 0; \ ++} ++ + static void + gst_play_marshal_BUFFER__BOXED (GClosure * closure, + GValue * return_value G_GNUC_UNUSED, +@@ -1800,9 +1810,38 @@ static const gchar *blacklisted_mimes[] = { + "video/x-dvd-subpicture", "subpicture/x-pgs", NULL + }; + ++ ++/* Returns TRUE if child is object or any parent (transitive) ++ * of child is object */ ++static gboolean ++_gst_object_contains_object (GstObject * object, GstObject * child) ++{ ++ GstObject *parent, *tmp; ++ ++ if (!object || !child) ++ return FALSE; ++ ++ parent = gst_object_ref (child); ++ do { ++ if (parent == object) { ++ gst_object_unref (parent); ++ return TRUE; ++ } ++ ++ tmp = gst_object_get_parent (parent); ++ gst_object_unref (parent); ++ parent = tmp; ++ } while (parent); ++ ++ return FALSE; ++} ++ + static void + gst_play_bin_handle_message (GstBin * bin, GstMessage * msg) + { ++ GstPlayBin *playbin = GST_PLAY_BIN (bin); ++ GstSourceGroup *group; ++ + if (gst_is_missing_plugin_message (msg)) { + gchar *detail; + guint i; +@@ -1818,6 +1857,73 @@ gst_play_bin_handle_message (GstBin * bin, GstMessage * msg) + } + g_free (detail); + } ++ ++ group = playbin->curr_group; ++ /* If we get an error of the subtitle uridecodebin transform ++ * them into warnings and disable the subtitles */ ++ if (group && group->pending && group->suburidecodebin) { ++ GstObject *srcparent = gst_object_get_parent (GST_OBJECT_CAST (msg->src)); ++ ++ if (G_UNLIKELY (_gst_object_contains_object (GST_OBJECT_CAST ++ (group->suburidecodebin), msg->src) ++ && GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ERROR)) { ++ GError *err; ++ gchar *debug = NULL; ++ GstMessage *new_msg; ++ GstIterator *it; ++ gboolean done = FALSE; ++ ++ gst_message_parse_error (msg, &err, &debug); ++ new_msg = gst_message_new_warning (msg->src, err, debug); ++ ++ gst_message_unref (msg); ++ msg = new_msg; ++ ++ REMOVE_SIGNAL (group->suburidecodebin, group->sub_pad_added_id); ++ REMOVE_SIGNAL (group->suburidecodebin, group->sub_pad_removed_id); ++ REMOVE_SIGNAL (group->suburidecodebin, group->sub_no_more_pads_id); ++ ++ it = gst_element_iterate_src_pads (group->suburidecodebin); ++ while (it && !done) { ++ GstPad *p = NULL; ++ GstIteratorResult res; ++ ++ res = gst_iterator_next (it, (gpointer) & p); ++ ++ switch (res) { ++ case GST_ITERATOR_DONE: ++ done = TRUE; ++ break; ++ case GST_ITERATOR_OK: ++ pad_removed_cb (NULL, p, group); ++ gst_object_unref (p); ++ break; ++ ++ case GST_ITERATOR_RESYNC: ++ gst_iterator_resync (it); ++ break; ++ case GST_ITERATOR_ERROR: ++ done = TRUE; ++ break; ++ } ++ } ++ if (it) ++ gst_iterator_free (it); ++ ++ gst_object_ref (group->suburidecodebin); ++ gst_bin_remove (bin, group->suburidecodebin); ++ gst_element_set_locked_state (group->suburidecodebin, FALSE); ++ gst_element_set_state (group->suburidecodebin, GST_STATE_NULL); ++ gst_object_unref (group->suburidecodebin); ++ group->suburidecodebin = NULL; ++ ++ no_more_pads_cb (NULL, group); ++ } ++ ++ if (srcparent) ++ gst_object_unref (srcparent); ++ } ++ + GST_BIN_CLASS (parent_class)->handle_message (bin, msg); + } + +@@ -2516,12 +2622,6 @@ group_set_locked_state_unlocked (GstPlayBin * playbin, GstSourceGroup * group, + return TRUE; + } + +-#define REMOVE_SIGNAL(obj,id) \ +-if (id) { \ +- g_signal_handler_disconnect (obj, id); \ +- id = 0; \ +-} +- + /* must be called with PLAY_BIN_LOCK */ + static gboolean + activate_group (GstPlayBin * playbin, GstSourceGroup * group, GstState target) diff --git a/gstreamer-plugins-base.spec b/gstreamer-plugins-base.spec index 3d36449..c18efde 100644 --- a/gstreamer-plugins-base.spec +++ b/gstreamer-plugins-base.spec @@ -3,7 +3,7 @@ Name: %{gstreamer}-plugins-base Version: 0.10.25 -Release: 1%{?dist} +Release: 2%{?dist} Summary: GStreamer streaming media framework base plug-ins Group: Applications/Multimedia @@ -33,6 +33,11 @@ BuildRequires: gtk2-devel BuildRequires: pkgconfig Obsoletes: gstreamer-plugins +# https://bugzilla.gnome.org/show_bug.cgi?id=587704 +Patch0: gstpb-no-subtitle-errors.patch +# https://bugzilla.gnome.org/show_bug.cgi?id=591677 +Patch1: gstpb-fix-missing-plugins.patch + # documentation BuildRequires: gtk-doc >= 1.3 BuildRequires: PyXML @@ -49,6 +54,8 @@ This package contains a set of well-maintained base plug-ins. %prep %setup -q -n gst-plugins-base-%{version} +%patch0 -p1 -b .subtitle-errors +%patch1 -p1 -b .missing-plugins %build %configure \ @@ -244,6 +251,9 @@ GStreamer Base Plugins library development and header files. %doc %{_datadir}/gtk-doc/html/gst-plugins-base-plugins-%{majorminor} %changelog +* Tue Oct 13 2009 Bastien Nocera <bnocera(a)redhat.com&gt; 0.10.25-2 +- Add patches to fix some playbin2 bugs (#518880) + * Mon Oct 05 2009 Bastien Nocera <bnocera(a)redhat.com&gt; 0.10.25-1 - Update to 0.10.25 - Require a gstreamer of the same version as us (#503707)