mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-23 18:21:04 +00:00
Code Issues 1 Projects Releases Wiki Activity

gst/playback/: Add support for chained ogg files. Prepare for playlist support. This patch introduces the concept of ...

Browse source 
Original commit message from CVS:
* gst/playback/gstdecodebin.c: (unlinked):
* gst/playback/gstplay-marshal.list:
* gst/playback/gstplaybasebin.c: (gst_play_base_bin_class_init),
(gst_play_base_bin_init), (group_create), (get_active_group),
(get_building_group), (group_destroy), (group_commit),
(queue_overrun), (remove_groups), (add_stream), (unknown_type),
(add_element_stream), (no_more_pads), (probe_triggered),
(preroll_unlinked), (new_decoded_pad), (removed_decoded_pad),
(state_change), (setup_source), (gst_play_base_bin_get_property),
(gst_play_base_bin_change_state), (gst_play_base_bin_add_element),
(gst_play_base_bin_link_stream),
(gst_play_base_bin_get_streaminfo):
* gst/playback/gstplaybasebin.h:
* gst/playback/gstplaybin.c: (gst_play_bin_class_init),
(remove_sinks), (setup_sinks), (gst_play_bin_change_state):
Add support for chained ogg files. Prepare for playlist
support. This patch introduces the concept of pad groups, which
together compose one playable media file.
This commit is contained in:
Wim Taymans 2004-11-08 09:46:17 +00:00
parent 4b8c8d5469
commit ac515f710f
6 changed files with 468 additions and 150 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
ChangeLog
View file

@ -1,3 +1,24 @@
2004-11-08 Wim Taymans <wim@fluendo.com>
* gst/playback/gstdecodebin.c: (unlinked):
* gst/playback/gstplay-marshal.list:
* gst/playback/gstplaybasebin.c: (gst_play_base_bin_class_init),
(gst_play_base_bin_init), (group_create), (get_active_group),
(get_building_group), (group_destroy), (group_commit),
(queue_overrun), (remove_groups), (add_stream), (unknown_type),
(add_element_stream), (no_more_pads), (probe_triggered),
(preroll_unlinked), (new_decoded_pad), (removed_decoded_pad),
(state_change), (setup_source), (gst_play_base_bin_get_property),
(gst_play_base_bin_change_state), (gst_play_base_bin_add_element),
(gst_play_base_bin_link_stream),
(gst_play_base_bin_get_streaminfo):
* gst/playback/gstplaybasebin.h:
* gst/playback/gstplaybin.c: (gst_play_bin_class_init),
(remove_sinks), (setup_sinks), (gst_play_bin_change_state):
Add support for chained ogg files. Prepare for playlist
support. This patch introduces the concept of pad groups, which
together compose one playable media file.
2004-11-07 David Schleef <ds@schleef.org>
* testsuite/gst-lint: Check for pad templates that aren't statically

48
gst/playback/gstdecodebin.c
View file

@ -625,17 +625,6 @@ remove_element_chain (GstDecodeBin * decode_bin, GstPad * pad)
gst_bin_remove (GST_BIN (decode_bin), elem);
}
/* This function will be called when a pad is disconnected for some reason */
static void
unlinked (GstPad * pad, GstPad * peerpad, GstDecodeBin * decode_bin)
{
/* inactivate pad */
gst_pad_set_active (pad, FALSE);
/* remove all elements linked to the peerpad */
remove_element_chain (decode_bin, peerpad);
}
/* This function will be called when a dynamic pad is created on an element.
* We try to continue autoplugging on this new pad. */
static void
@ -682,6 +671,43 @@ no_more_pads (GstElement * element, GstDynamic * dynamic)
}
}
/* This function will be called when a pad is disconnected for some reason */
static void
unlinked (GstPad * pad, GstPad * peerpad, GstDecodeBin * decode_bin)
{
GList *walk;
GstDynamic *dyn;
GstElement *element;
/* inactivate pad */
gst_pad_set_active (pad, FALSE);
/* remove all elements linked to the peerpad */
remove_element_chain (decode_bin, peerpad);
/* if an element removes two pads, then we don't want this twice */
element = gst_pad_get_parent (pad);
for (walk = decode_bin->dynamics; walk != NULL; walk = walk->next) {
dyn = walk->data;
if (dyn->element == element)
return;
}
GST_DEBUG_OBJECT (decode_bin, "pad removal while alive - chained?");
/* re-setup dynamic plugging */
dyn = g_new0 (GstDynamic, 1);
dyn->np_sig_id = g_signal_connect (G_OBJECT (element), "new-pad",
G_CALLBACK (new_pad), dyn);
dyn->nmp_sig_id = g_signal_connect (G_OBJECT (element), "no-more-pads",
G_CALLBACK (no_more_pads), dyn);
dyn->element = element;
dyn->decode_bin = decode_bin;
/* and add this element to the dynamic elements */
decode_bin->dynamics = g_list_prepend (decode_bin->dynamics, dyn);
}
/* this function inspects the given element and tries to connect something
* on the srcpads. If there are dynamic pads, it sets up a signal handler to
* continue autoplugging when they become available */

2
gst/playback/gstplay-marshal.list
View file

@ -1,2 +1,2 @@
VOID:OBJECT,OBJECT
BOOLEAN:OBJECT,OBJECT
VOID:OBJECT,BOOLEAN

478
gst/playback/gstplaybasebin.c
View file

@ -44,7 +44,8 @@ enum
/* signals */
enum
{
MUTE_STREAM_SIGNAL,
SETUP_OUTPUT_PADS_SIGNAL,
REMOVED_OUTPUT_PAD_SIGNAL,
LINK_STREAM_SIGNAL,
UNLINK_STREAM_SIGNAL,
LAST_SIGNAL
@ -129,7 +130,7 @@ gst_play_base_bin_class_init (GstPlayBaseBinClass * klass)
g_object_class_install_property (gobject_klass, ARG_QUEUE_SIZE,
g_param_spec_uint64 ("queue-size", "Queue size",
"Size of internal queues in nanoseconds", 0, G_MAXINT64,
DEFAULT_QUEUE_SIZE, G_PARAM_READABLE));
DEFAULT_QUEUE_SIZE, G_PARAM_READWRITE));
g_object_class_install_property (gobject_klass, ARG_STREAMINFO,
g_param_spec_pointer ("stream-info", "Stream info", "List of streaminfo",
G_PARAM_READABLE));
@ -137,14 +138,29 @@ gst_play_base_bin_class_init (GstPlayBaseBinClass * klass)
GST_DEBUG_CATEGORY_INIT (gst_play_base_bin_debug, "playbasebin", 0,
"playbasebin");
/* signals */
gst_play_base_bin_signals[SETUP_OUTPUT_PADS_SIGNAL] =
g_signal_new ("setup-output-pads", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstPlayBaseBinClass, setup_output_pads),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
gst_play_base_bin_signals[REMOVED_OUTPUT_PAD_SIGNAL] =
g_signal_new ("removed-output-pad", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstPlayBaseBinClass, removed_output_pad),
NULL, NULL, gst_marshal_VOID__OBJECT, G_TYPE_NONE, 1, G_TYPE_OBJECT);
/* action signals */
gst_play_base_bin_signals[LINK_STREAM_SIGNAL] =
g_signal_new ("link-stream", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
g_signal_new ("link-stream", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstPlayBaseBinClass, link_stream),
NULL, NULL, gst_play_marshal_VOID__OBJECT_OBJECT, G_TYPE_NONE, 2,
NULL, NULL, gst_play_marshal_BOOLEAN__OBJECT_OBJECT, G_TYPE_BOOLEAN, 2,
G_TYPE_OBJECT, GST_TYPE_PAD);
gst_play_base_bin_signals[UNLINK_STREAM_SIGNAL] =
g_signal_new ("unlink-stream", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstPlayBaseBinClass, unlink_stream),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstPlayBaseBinClass, unlink_stream),
NULL, NULL, gst_marshal_VOID__OBJECT, G_TYPE_NONE, 1, G_TYPE_OBJECT);
gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_play_base_bin_dispose);
@ -170,9 +186,12 @@ gst_play_base_bin_init (GstPlayBaseBin * play_base_bin)
play_base_bin->source = NULL;
play_base_bin->decoder = NULL;
play_base_bin->preroll_lock = g_mutex_new ();
play_base_bin->preroll_cond = g_cond_new ();
play_base_bin->preroll_elems = NULL;
play_base_bin->group_lock = g_mutex_new ();
play_base_bin->group_cond = g_cond_new ();
play_base_bin->building_group = NULL;
play_base_bin->queued_groups = NULL;
play_base_bin->queue_size = DEFAULT_QUEUE_SIZE;
GST_FLAG_SET (play_base_bin, GST_BIN_SELF_SCHEDULABLE);
@ -192,18 +211,139 @@ gst_play_base_bin_dispose (GObject * object)
}
}
static GstPlayBaseGroup *
group_create (GstPlayBaseBin * play_base_bin)
{
GstPlayBaseGroup *group;
group = g_new0 (GstPlayBaseGroup, 1);
group->bin = play_base_bin;
return group;
}
static GstPlayBaseGroup *
get_active_group (GstPlayBaseBin * play_base_bin)
{
if (play_base_bin->queued_groups) {
return (GstPlayBaseGroup *) play_base_bin->queued_groups->data;
}
return NULL;
}
/* get the group used for discovering the different streams.
* This function creates a group is there is none.
*/
static GstPlayBaseGroup *
get_building_group (GstPlayBaseBin * play_base_bin)
{
GstPlayBaseGroup *group;
group = play_base_bin->building_group;
if (group == NULL) {
group = group_create (play_base_bin);
play_base_bin->building_group = group;
}
return group;
}
static void
group_destroy (GstPlayBaseGroup * group)
{
GstPlayBaseBin *play_base_bin = group->bin;
GList *prerolls, *infos;
GST_LOG ("removing group %p", group);
/* remove the preroll queues */
for (prerolls = group->preroll_elems; prerolls;
prerolls = g_list_next (prerolls)) {
GstElement *element = GST_ELEMENT (prerolls->data);
GstPad *pad;
guint sig_id;
/* have to unlink the unlink handler first because else we
* are going to link an element in the finalize handler */
pad = gst_element_get_pad (element, "sink");
sig_id =
GPOINTER_TO_INT (g_object_get_data (G_OBJECT (pad), "unlinked_id"));
if (sig_id != 0) {
GST_LOG ("removing unlink signal %s:%s", GST_DEBUG_PAD_NAME (pad));
g_signal_handler_disconnect (G_OBJECT (pad), sig_id);
g_object_set_data (G_OBJECT (pad), "unlinked_id", GINT_TO_POINTER (0));
}
if (get_active_group (play_base_bin) == group) {
GST_LOG ("removing preroll element %s", gst_element_get_name (element));
gst_bin_remove (GST_BIN (play_base_bin->thread), element);
} else {
gst_object_unref (GST_OBJECT (element));
}
}
g_list_free (group->preroll_elems);
/* free the streaminfo too */
for (infos = group->streaminfo; infos; infos = g_list_next (infos)) {
GstStreamInfo *info = GST_STREAM_INFO (infos->data);
g_object_unref (info);
}
g_list_free (group->streaminfo);
g_free (group);
}
/* is called when the current building group is completely finished
* and ready for playback
*/
static void
group_commit (GstPlayBaseBin * play_base_bin)
{
GstPlayBaseGroup *group = play_base_bin->building_group;
GList *prerolls;
/* if an element signalled a no-more-pads after we stopped due
* to preroll, the group is NULL. This is not an error */
if (group == NULL)
return;
GST_DEBUG ("group %p done", group);
play_base_bin->queued_groups = g_list_append (play_base_bin->queued_groups,
group);
play_base_bin->building_group = NULL;
/* remove signals. We don't want anymore signals from the preroll
* elements at this stage. */
for (prerolls = group->preroll_elems; prerolls;
prerolls = g_list_next (prerolls)) {
GstElement *element = GST_ELEMENT (prerolls->data);
guint sig_id;
sig_id =
GPOINTER_TO_INT (g_object_get_data (G_OBJECT (element), "signal_id"));
GST_LOG ("removing preroll signal %s", gst_element_get_name (element));
g_signal_handler_disconnect (G_OBJECT (element), sig_id);
}
g_mutex_lock (play_base_bin->group_lock);
GST_DEBUG ("signal group done");
g_cond_signal (play_base_bin->group_cond);
GST_DEBUG ("signaled group done");
g_mutex_unlock (play_base_bin->group_lock);
}
/* this signal will be fired when one of the queues with raw
* data is filled. This means that the preroll stage is over and
* playback should start */
* data is filled. This means that the group building stage is over
* and playback of the new queued group should start */
static void
queue_overrun (GstElement * element, GstPlayBaseBin * play_base_bin)
{
GST_DEBUG ("queue %s overrun", gst_element_get_name (element));
g_mutex_lock (play_base_bin->preroll_lock);
GST_DEBUG ("signal preroll done");
g_cond_signal (play_base_bin->preroll_cond);
GST_DEBUG ("signaled preroll done");
g_mutex_unlock (play_base_bin->preroll_lock);
group_commit (play_base_bin);
}
/* generate a preroll element which is simply a queue. While there
@ -236,33 +376,47 @@ gen_preroll_element (GstPlayBaseBin * play_base_bin, GstPad * pad)
}
static void
remove_prerolls (GstPlayBaseBin * play_base_bin)
remove_groups (GstPlayBaseBin * play_base_bin)
{
GList *prerolls, *infos;
GList *groups;
/* remove the preroll queues */
for (prerolls = play_base_bin->preroll_elems; prerolls;
prerolls = g_list_next (prerolls)) {
GstElement *element = GST_ELEMENT (prerolls->data);
GST_LOG ("removing preroll element %s", gst_element_get_name (element));
gst_bin_remove (GST_BIN (play_base_bin->thread), element);
/* first destroy the group we were building if any */
if (play_base_bin->building_group) {
group_destroy (play_base_bin->building_group);
play_base_bin->building_group = NULL;
}
g_list_free (play_base_bin->preroll_elems);
play_base_bin->preroll_elems = NULL;
/* free the streaminfo too */
for (infos = play_base_bin->streaminfo; infos; infos = g_list_next (infos)) {
GstStreamInfo *info = GST_STREAM_INFO (infos->data);
/* remove the queued groups */
for (groups = play_base_bin->queued_groups; groups;
groups = g_list_next (groups)) {
GstPlayBaseGroup *group = (GstPlayBaseGroup *) groups->data;
g_object_unref (info);
group_destroy (group);
}
g_list_free (play_base_bin->queued_groups);
play_base_bin->queued_groups = NULL;
}
/* Add/remove a single stream to current building group.
*/
static void
add_stream (GstPlayBaseBin * play_base_bin, GstStreamInfo * info)
{
GstPlayBaseGroup *group = get_building_group (play_base_bin);
GST_DEBUG ("add stream to building group %p", group);
group->streaminfo = g_list_append (group->streaminfo, info);
switch (info->type) {
case GST_STREAM_TYPE_AUDIO:
group->naudiopads++;
break;
case GST_STREAM_TYPE_VIDEO:
group->nvideopads++;
break;
default:
group->nunknownpads++;
break;
}
g_list_free (play_base_bin->streaminfo);
play_base_bin->streaminfo = NULL;
play_base_bin->nstreams = 0;
play_base_bin->naudiopads = 0;
play_base_bin->nvideopads = 0;
play_base_bin->nunknownpads = 0;
}
/* signal fired when an unknown stream is found. We create a new
@ -282,7 +436,7 @@ unknown_type (GstElement * element, GstPad * pad, GstCaps * caps,
info = gst_stream_info_new (GST_OBJECT (pad), GST_STREAM_TYPE_UNKNOWN,
NULL, caps);
info->origin = GST_OBJECT (pad);
play_base_bin->streaminfo = g_list_append (play_base_bin->streaminfo, info);
add_stream (play_base_bin, info);
g_free (capsstr);
}
@ -302,23 +456,90 @@ add_element_stream (GstElement * element, GstPlayBaseBin * play_base_bin)
gst_stream_info_new (GST_OBJECT (element), GST_STREAM_TYPE_ELEMENT,
NULL, NULL);
info->origin = GST_OBJECT (element);
play_base_bin->streaminfo = g_list_append (play_base_bin->streaminfo, info);
add_stream (play_base_bin, info);
}
/* when the decoder element signals that no more pads will be generated, we
* can stop the preroll
* can commit the current group.
*/
static void
no_more_pads (GstElement * element, GstPlayBaseBin * play_base_bin)
{
/* setup phase */
GST_DEBUG ("no more pads");
g_mutex_lock (play_base_bin->preroll_lock);
GST_DEBUG ("signal preroll done");
g_cond_signal (play_base_bin->preroll_cond);
GST_DEBUG ("signaled preroll done");
g_mutex_unlock (play_base_bin->preroll_lock);
group_commit (play_base_bin);
}
static gboolean
probe_triggered (GstProbe * probe, GstData ** data, gpointer user_data)
{
GstPlayBaseGroup *group = (GstPlayBaseGroup *) user_data;
GstPlayBaseBin *play_base_bin = group->bin;
if (GST_IS_EVENT (*data)) {
GstEvent *event = GST_EVENT (*data);
if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
gint queued;
GST_DEBUG ("probe got EOS in group %p", group);
/* see if we have some more groups left to play */
queued = g_list_length (play_base_bin->queued_groups);
if (queued > 1) {
gst_element_set_state (play_base_bin->thread, GST_STATE_PAUSED);
/* ok, get rid of the current group then */
group_destroy (group);
/* removing the current group brings the next group
* active */
play_base_bin->queued_groups =
g_list_delete_link (play_base_bin->queued_groups,
play_base_bin->queued_groups);
GST_DEBUG ("switching to next group %p",
play_base_bin->queued_groups->data);
/* and signal the new group */
GST_DEBUG ("emit signal");
g_signal_emit (play_base_bin,
gst_play_base_bin_signals[SETUP_OUTPUT_PADS_SIGNAL], 0);
gst_element_set_state (play_base_bin->thread, GST_STATE_PLAYING);
/* get rid of the EOS event */
return FALSE;
}
}
}
return TRUE;
}
/* This function will be called when the sinkpad of the preroll element
* is unlinked, we have to connect something to the sinkpad or else the
* state change will fail..
*/
static void
preroll_unlinked (GstPad * pad, GstPad * peerpad,
GstPlayBaseBin * play_base_bin)
{
GstElement *fakesrc;
guint sig_id;
fakesrc = gst_element_factory_make ("fakesrc", NULL);
g_object_set (G_OBJECT (fakesrc), "num_buffers", 0, NULL);
GST_DEBUG ("patching unlinked pad %s:%s", GST_DEBUG_PAD_NAME (pad));
gst_pad_link (gst_element_get_pad (fakesrc, "src"), pad);
gst_bin_add (GST_BIN (play_base_bin->thread), fakesrc);
sig_id = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (pad), "unlinked_id"));
if (sig_id != 0) {
g_signal_handler_disconnect (G_OBJECT (pad), sig_id);
g_object_set_data (G_OBJECT (pad), "unlinked_id", GINT_TO_POINTER (0));
}
}
/* signal fired when decodebin has found a new raw pad. We create
* a preroll element if needed and the appropriate streaminfo.
*/
@ -334,6 +555,8 @@ new_decoded_pad (GstElement * element, GstPad * pad, gboolean last,
GstStreamType type;
GstPad *srcpad;
gboolean need_preroll;
GstPlayBaseGroup *group;
GstProbe *probe;
GST_DEBUG ("play base: new decoded pad %d", last);
@ -348,33 +571,35 @@ new_decoded_pad (GstElement * element, GstPad * pad, gboolean last,
structure = gst_caps_get_structure (caps, 0);
mimetype = gst_structure_get_name (structure);
play_base_bin->nstreams++;
group = get_building_group (play_base_bin);
group->nstreams++;
need_preroll = FALSE;
if (g_str_has_prefix (mimetype, "audio/")) {
type = GST_STREAM_TYPE_AUDIO;
play_base_bin->naudiopads++;
/* first audio pad gets a preroll element */
if (play_base_bin->naudiopads == 1) {
if (group->naudiopads == 0) {
need_preroll = TRUE;
}
} else if (g_str_has_prefix (mimetype, "video/")) {
type = GST_STREAM_TYPE_VIDEO;
play_base_bin->nvideopads++;
/* first video pad gets a preroll element */
if (play_base_bin->nvideopads == 1) {
if (group->nvideopads == 0) {
need_preroll = TRUE;
}
} else {
type = GST_STREAM_TYPE_UNKNOWN;
play_base_bin->nunknownpads++;
}
if (last || !need_preroll) {
GST_DEBUG ("play base: pad does not need preroll");
srcpad = pad;
} else {
guint sig;
GstPad *sinkpad;
GST_DEBUG ("play base: pad needs preroll");
new_element = gen_preroll_element (play_base_bin, pad);
@ -382,59 +607,49 @@ new_decoded_pad (GstElement * element, GstPad * pad, gboolean last,
gst_bin_add (GST_BIN (play_base_bin->thread), new_element);
play_base_bin->threaded = TRUE;
play_base_bin->preroll_elems =
g_list_prepend (play_base_bin->preroll_elems, new_element);
group->preroll_elems = g_list_prepend (group->preroll_elems, new_element);
gst_element_set_state (new_element, GST_STATE_READY);
gst_pad_link (pad, gst_element_get_pad (new_element, "sink"));
sinkpad = gst_element_get_pad (new_element, "sink");
gst_pad_link (pad, sinkpad);
/* make sure we catch unlink signals */
sig = g_signal_connect (G_OBJECT (sinkpad), "unlinked",
G_CALLBACK (preroll_unlinked), play_base_bin);
/* keep a ref to the signal id so that we can disconnect the signal callback */
g_object_set_data (G_OBJECT (sinkpad), "unlinked_id",
GINT_TO_POINTER (sig));
gst_element_set_state (new_element, GST_STATE_PAUSED);
}
/* install a probe so that we know when this group has ended */
probe = gst_probe_new (FALSE, probe_triggered, group);
gst_pad_add_probe (GST_PAD_REALIZE (srcpad), probe);
/* add the stream to the list */
info = gst_stream_info_new (GST_OBJECT (srcpad), type, NULL, caps);
info->origin = GST_OBJECT (pad);
play_base_bin->streaminfo = g_list_append (play_base_bin->streaminfo, info);
add_stream (play_base_bin, info);
/* signal the no more pads after adding the stream */
if (last)
no_more_pads (NULL, play_base_bin);
}
/* signal fired when decodebin has removed a raw pad. We remove
* the preroll element if needed and the appropriate streaminfo.
*/
/* nothing, really... We have already dealt with this because
* we have the EOS padprobe installed on each pad */
static void
removed_decoded_pad (GstElement * element, GstPad * pad,
GstPlayBaseBin * play_base_bin)
{
GList *streams;
GST_DEBUG ("removing decoded pad %s:%s", GST_DEBUG_PAD_NAME (pad));
/* first find the stream to decode this pad */
streams = play_base_bin->streaminfo;
while (streams) {
GstStreamInfo *info = GST_STREAM_INFO (streams->data);
if (info->origin == GST_OBJECT (pad)) {
GST_DEBUG ("removing stream %p", info);
play_base_bin->streaminfo =
g_list_remove (play_base_bin->streaminfo, info);
g_object_unref (info);
return;
} else {
GST_DEBUG ("skipping stream %p", info);
}
streams = g_list_next (streams);
}
return;
}
/*
* Cache errors...
*/
static void
thread_error (GstElement * element,
GstElement * orig, GError * error, const gchar * debug, gpointer data)
@ -456,13 +671,9 @@ state_change (GstElement * element,
GstPlayBaseBin *play_base_bin = GST_PLAY_BASE_BIN (data);
if (old_state > new_state) {
/* EOS or error occurred */
/* EOS or error occurred, we have to commit the current group */
GST_DEBUG ("state changed downwards");
g_mutex_lock (play_base_bin->preroll_lock);
GST_DEBUG ("signal preroll done");
g_cond_signal (play_base_bin->preroll_cond);
GST_DEBUG ("signaled preroll done");
g_mutex_unlock (play_base_bin->preroll_lock);
group_commit (play_base_bin);
}
}
@ -510,15 +721,18 @@ setup_source (GstPlayBaseBin * play_base_bin, GError ** error)
old_dec = play_base_bin->decoder;
if (old_dec) {
GST_LOG ("removing old decoder element %s", gst_element_get_name (old_dec));
/* keep a ref to the old decoder as we might need to add it again
* to the bin if we can't find a new decoder */
gst_object_ref (GST_OBJECT (old_dec));
gst_bin_remove (GST_BIN (play_base_bin->thread), old_dec);
}
/* remove our previous preroll queues */
remove_prerolls (play_base_bin);
remove_groups (play_base_bin);
/* now see if the source element emits raw audio/video all by itself,
* if so, we can create streams for the pads and be done with it.
* Also check that is has source pads, if now, we assume it will
* Also check that is has source pads, if not, we assume it will
* do everything itself.
*/
{
@ -558,12 +772,14 @@ setup_source (GstPlayBaseBin * play_base_bin, GError ** error)
}
}
if (is_raw) {
no_more_pads (play_base_bin->source, play_base_bin);
return TRUE;
}
if (no_out) {
/* create a stream to indicate that this uri is handled by a self
* contained element */
add_element_stream (play_base_bin->source, play_base_bin);
no_more_pads (play_base_bin->source, play_base_bin);
return TRUE;
}
}
@ -582,6 +798,9 @@ setup_source (GstPlayBaseBin * play_base_bin, GError ** error)
/* ref decoder so that the bin does not take ownership */
gst_object_ref (GST_OBJECT (play_base_bin->decoder));
gst_bin_add (GST_BIN (play_base_bin->thread), play_base_bin->decoder);
/* now we can really get rid of the old decoder */
if (old_dec)
gst_object_unref (GST_OBJECT (old_dec));
}
res = gst_pad_link (srcpad,
@ -604,44 +823,25 @@ setup_source (GstPlayBaseBin * play_base_bin, GError ** error)
/* either when the queues are filled or when the decoder element has no more
* dynamic streams, the cond is unlocked. We can remove the signal handlers then
*/
g_mutex_lock (play_base_bin->preroll_lock);
g_mutex_lock (play_base_bin->group_lock);
if (gst_element_set_state (play_base_bin->thread, GST_STATE_PLAYING) ==
GST_STATE_SUCCESS) {
GList *prerolls;
GST_DEBUG ("waiting for preroll...");
GST_DEBUG ("waiting for first group...");
sig6 = g_signal_connect (G_OBJECT (play_base_bin->thread),
"state-change", G_CALLBACK (state_change), play_base_bin);
g_cond_wait (play_base_bin->preroll_cond, play_base_bin->preroll_lock);
GST_DEBUG ("preroll done !");
/* remove signals */
for (prerolls = play_base_bin->preroll_elems; prerolls;
prerolls = g_list_next (prerolls)) {
GstElement *element = GST_ELEMENT (prerolls->data);
guint sig_id;
sig_id =
GPOINTER_TO_INT (g_object_get_data (G_OBJECT (element),
"signal_id"));
GST_LOG ("removing preroll signal %s", gst_element_get_name (element));
g_signal_handler_disconnect (G_OBJECT (element), sig_id);
}
g_cond_wait (play_base_bin->group_cond, play_base_bin->group_lock);
GST_DEBUG ("group done !");
} else {
GST_DEBUG ("state change failed, media cannot be loaded");
sig6 = 0;
}
g_mutex_unlock (play_base_bin->preroll_lock);
g_mutex_unlock (play_base_bin->group_lock);
if (sig6 != 0)
g_signal_handler_disconnect (G_OBJECT (play_base_bin->thread), sig6);
g_signal_handler_disconnect (G_OBJECT (play_base_bin->thread), sig5);
g_signal_handler_disconnect (G_OBJECT (play_base_bin->decoder), sig4);
g_signal_handler_disconnect (G_OBJECT (play_base_bin->decoder), sig3);
//g_signal_handler_disconnect (G_OBJECT (play_base_bin->decoder), sig2);
//g_signal_handler_disconnect (G_OBJECT (play_base_bin->decoder), sig1);
play_base_bin->need_rebuild = FALSE;
}
@ -704,13 +904,22 @@ gst_play_base_bin_get_property (GObject * object, guint prop_id, GValue * value,
g_value_set_string (value, play_base_bin->uri);
break;
case ARG_NSTREAMS:
g_value_set_int (value, play_base_bin->nstreams);
{
GstPlayBaseGroup *group = get_active_group (play_base_bin);
if (group) {
g_value_set_int (value, group->nstreams);
} else {
g_value_set_int (value, 0);
}
break;
}
case ARG_QUEUE_SIZE:
g_value_set_uint64 (value, play_base_bin->queue_size);
break;
case ARG_STREAMINFO:
g_value_set_pointer (value, play_base_bin->streaminfo);
g_value_set_pointer (value,
(gpointer) gst_play_base_bin_get_streaminfo (play_base_bin));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -744,8 +953,6 @@ gst_play_base_bin_change_state (GstElement * element)
if (sched) {
gst_element_set_scheduler (play_base_bin->thread, sched);
//gst_object_set_parent (GST_OBJECT (play_base_bin->thread), GST_OBJECT (play_base_bin));
gst_element_set_state (play_base_bin->thread, GST_STATE_READY);
g_signal_connect (G_OBJECT (play_base_bin->thread), "eos",
@ -781,11 +988,17 @@ gst_play_base_bin_change_state (GstElement * element)
} else {
const GList *item;
gboolean stream_found = FALSE, no_media = FALSE;
GstPlayBaseGroup *group;
group = get_active_group (play_base_bin);
/* FIXME for now... */
g_assert (group);
/* check if we found any supported stream... if not, then
* we detected stream type (or the above would've failed),
* but linking/decoding failed - plugin probably missing. */
for (item = play_base_bin->streaminfo; item != NULL; item = item->next) {
for (item = group->streaminfo; item != NULL; item = item->next) {
GstStreamInfo *info = GST_STREAM_INFO (item->data);
if (info->type != GST_STREAM_TYPE_UNKNOWN) {
@ -834,12 +1047,12 @@ gst_play_base_bin_change_state (GstElement * element)
* because one stream was unrecognized. */
g_signal_connect (play_base_bin->thread, "error",
G_CALLBACK (gst_play_base_bin_error), play_base_bin);
GST_DEBUG ("emit signal");
g_signal_emit (play_base_bin,
gst_play_base_bin_signals[SETUP_OUTPUT_PADS_SIGNAL], 0);
} else {
/* in case of no preroll, we might have streaminfo already... */
g_list_foreach (play_base_bin->streaminfo,
(GFunc) g_object_unref, NULL);
g_list_free (play_base_bin->streaminfo);
play_base_bin->streaminfo = NULL;
/* clean up leftover groups */
remove_groups (play_base_bin);
}
break;
}
@ -854,6 +1067,7 @@ gst_play_base_bin_change_state (GstElement * element)
G_CALLBACK (gst_play_base_bin_error), play_base_bin);
ret = gst_element_set_state (play_base_bin->thread, GST_STATE_READY);
play_base_bin->need_rebuild = TRUE;
remove_groups (play_base_bin);
break;
case GST_STATE_READY_TO_NULL:
gst_object_unref (GST_OBJECT (play_base_bin->thread));
@ -903,7 +1117,7 @@ gst_play_base_bin_add_element (GstBin * bin, GstElement * element)
/* FIXME set element to READY so that negotiation can happen. This
* currently fails because of weird negotiation problems. */
/* gst_element_set_state (element, GST_STATE_READY); */
//gst_element_set_state (element, GST_STATE_PLAYING);
} else {
g_warning ("adding elements is not allowed in NULL");
@ -996,7 +1210,7 @@ gst_play_base_bin_found_tag (GstElement * element,
gst_object_unref (parent);
}
void
gboolean
gst_play_base_bin_link_stream (GstPlayBaseBin * play_base_bin,
GstStreamInfo * info, GstPad * pad)
{
@ -1004,9 +1218,14 @@ gst_play_base_bin_link_stream (GstPlayBaseBin * play_base_bin,
if (info == NULL) {
GList *streams;
GstPlayBaseGroup *group = get_active_group (play_base_bin);
for (streams = play_base_bin->streaminfo; streams;
streams = g_list_next (streams)) {
if (group == NULL) {
GST_DEBUG ("no current group");
return FALSE;
}
for (streams = group->streaminfo; streams; streams = g_list_next (streams)) {
GstStreamInfo *sinfo = (GstStreamInfo *) streams->data;
if (sinfo->type == GST_STREAM_TYPE_ELEMENT)
@ -1025,10 +1244,13 @@ gst_play_base_bin_link_stream (GstPlayBaseBin * play_base_bin,
if (!gst_pad_link (GST_PAD (info->object), pad)) {
GST_DEBUG ("could not link");
g_object_set (G_OBJECT (info), "mute", TRUE, NULL);
return FALSE;
}
} else {
GST_DEBUG ("could not find pad to link");
return FALSE;
}
return TRUE;
}
void
@ -1041,5 +1263,11 @@ gst_play_base_bin_unlink_stream (GstPlayBaseBin * play_base_bin,
const GList *
gst_play_base_bin_get_streaminfo (GstPlayBaseBin * play_base_bin)
{
return play_base_bin->streaminfo;
GstPlayBaseGroup *group = get_active_group (play_base_bin);
GList *info = NULL;
if (group) {
info = group->streaminfo;
}
return info;
}

48
gst/playback/gstplaybasebin.h
View file

@ -35,14 +35,35 @@ G_BEGIN_DECLS
typedef struct _GstPlayBaseBin GstPlayBaseBin;
typedef struct _GstPlayBaseBinClass GstPlayBaseBinClass;
/* a GstPlayBaseGroup is a group of pads and streaminfo that together
* make up a playable stream. A new group is created from the current
* set of pads that are alive when the preroll elements are filled or
* when the no-more-pads signal is fired.
*
* We have to queue the groups as they can be created while the preroll
* queues are still playing the old group. We monitor the EOS signals
* on the preroll queues and when all the streams in the current group
* have EOSed, we switch to the next queued group.
*/
typedef struct
{
GstPlayBaseBin *bin; /* ref to the owner */
gint nstreams;
GList *streaminfo;
gint naudiopads;
gint nvideopads;
gint nunknownpads;
GList *preroll_elems;
} GstPlayBaseGroup;
struct _GstPlayBaseBin {
GstBin bin;
/* properties */
gboolean threaded;
GMutex *preroll_lock;
GCond *preroll_cond;
GList *preroll_elems;
guint64 queue_size;
/* internal thread */
@ -52,12 +73,11 @@ struct _GstPlayBaseBin {
GstElement *decoder;
gboolean need_rebuild;
gint nstreams;
GList *streaminfo;
gint naudiopads;
gint nvideopads;
gint nunknownpads;
/* group management */
GMutex *group_lock; /* lock and mutex to signal availability of new group */
GCond *group_cond;
GstPlayBaseGroup *building_group; /* the group that we are constructing */
GList *queued_groups; /* the constructed groups, head is the active one */
/* list of usable factories */
GList *factories;
@ -66,7 +86,13 @@ struct _GstPlayBaseBin {
struct _GstPlayBaseBinClass {
GstBinClass parent_class;
void (*link_stream) (GstPlayBaseBin *play_base_bin,
/* signals */
void (*setup_output_pads) (GstPlayBaseBin *play_base_bin);
void (*removed_output_pad) (GstPlayBaseBin *play_base_bin,
GstStreamInfo *info);
/* action signals */
gboolean (*link_stream) (GstPlayBaseBin *play_base_bin,
GstStreamInfo *info,
GstPad *pad);
void (*unlink_stream) (GstPlayBaseBin *play_base_bin,
@ -80,7 +106,7 @@ const GList* gst_play_base_bin_get_streaminfo (GstPlayBaseBin *play_base_bin);
gint gst_play_base_bin_get_nstreams_of_type (GstPlayBaseBin *play_base_bin,
GstStreamType type);
void gst_play_base_bin_link_stream (GstPlayBaseBin *play_base_bin,
gboolean gst_play_base_bin_link_stream (GstPlayBaseBin *play_base_bin,
GstStreamInfo *info,
GstPad *pad);
void gst_play_base_bin_unlink_stream (GstPlayBaseBin *play_base_bin,

21
gst/playback/gstplaybin.c
View file

@ -85,6 +85,8 @@ static void gst_play_bin_class_init (GstPlayBinClass * klass);
static void gst_play_bin_init (GstPlayBin * play_bin);
static void gst_play_bin_dispose (GObject * object);
static void setup_sinks (GstPlayBaseBin * play_base_bin);
static void gst_play_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * spec);
static void gst_play_bin_get_property (GObject * object, guint prop_id,
@ -147,10 +149,12 @@ gst_play_bin_class_init (GstPlayBinClass * klass)
GObjectClass *gobject_klass;
GstElementClass *gstelement_klass;
GstBinClass *gstbin_klass;
GstPlayBaseBinClass *playbasebin_klass;
gobject_klass = (GObjectClass *) klass;
gstelement_klass = (GstElementClass *) klass;
gstbin_klass = (GstBinClass *) klass;
playbasebin_klass = (GstPlayBaseBinClass *) klass;
parent_class = g_type_class_ref (gst_play_base_bin_get_type ());
@ -191,6 +195,8 @@ gst_play_bin_class_init (GstPlayBinClass * klass)
gstelement_klass->get_query_types =
GST_DEBUG_FUNCPTR (gst_play_bin_get_query_types);
gstelement_klass->query = GST_DEBUG_FUNCPTR (gst_play_bin_query);
playbasebin_klass->setup_output_pads = setup_sinks;
}
static void
@ -497,6 +503,7 @@ remove_sinks (GstPlayBin * play_bin)
GstObject *parent;
GstElement *element;
GST_DEBUG ("removesinks");
element = g_hash_table_lookup (play_bin->cache, "abin");
if (element != NULL) {
parent = gst_element_get_parent (element);
@ -536,14 +543,20 @@ remove_sinks (GstPlayBin * play_bin)
* media file
*/
static void
setup_sinks (GstPlayBin * play_bin)
setup_sinks (GstPlayBaseBin * play_base_bin)
{
GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
GList *streaminfo;
GList *s;
gint num_audio = 0;
gint num_video = 0;
gboolean need_vis = FALSE;
/* FIXME: do this nicer */
if (GST_STATE (play_base_bin) == GST_STATE_PLAYING) {
remove_sinks (play_bin);
}
GST_DEBUG ("setupsinks");
/* get info about the stream */
g_object_get (G_OBJECT (play_bin), "stream-info", &streaminfo, NULL);
@ -631,7 +644,11 @@ setup_sinks (GstPlayBin * play_bin)
}
if (sink != NULL) {
gst_object_ref (GST_OBJECT (sink));
gst_bin_add (GST_BIN (play_bin), sink);
GST_DEBUG ("Adding sink with state %d (parent: %d, peer: %d)\n",
GST_STATE (sink), GST_STATE (play_bin),
GST_STATE (gst_pad_get_parent (srcpad)));
sinkpad = gst_element_get_pad (sink, "sink");
res = gst_pad_link (srcpad, sinkpad);
if (!res) {
@ -672,7 +689,7 @@ gst_play_bin_change_state (GstElement * element)
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
setup_sinks (play_bin);
//setup_sinks (play_bin);
break;
case GST_STATE_PAUSED_TO_PLAYING:
case GST_STATE_PLAYING_TO_PAUSED: