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concat: Add new element that concatenates multiple streams

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=734470
This commit is contained in:
Sebastian Dröge 2014-08-07 14:42:44 +02:00
parent f7ec33009a
commit c938561a2b
4 changed files with 752 additions and 0 deletions
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2
plugins/elements/Makefile.am
View file

@ -4,6 +4,7 @@ plugin_LTLIBRARIES = libgstcoreelements.la
libgstcoreelements_la_DEPENDENCIES = $(top_builddir)/gst/libgstreamer-@GST_API_VERSION@.la
libgstcoreelements_la_SOURCES = \
gstcapsfilter.c \
gstconcat.c \
gstdownloadbuffer.c \
gstelements.c \
gstelements_private.c \
@ -34,6 +35,7 @@ libgstcoreelements_la_LIBTOOLFLAGS = $(GST_PLUGIN_LIBTOOLFLAGS)
noinst_HEADERS = \
gstcapsfilter.h \
gstconcat.h \
gstdownloadbuffer.h \
gstelements_private.h \
gstfakesink.h \

673
plugins/elements/gstconcat.c Normal file
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@ -0,0 +1,673 @@
/* GStreamer concat element
*
* Copyright (c) 2014 Sebastian Dröge <sebastian@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstconcat.h"
GST_DEBUG_CATEGORY_STATIC (gst_concat_debug);
#define GST_CAT_DEFAULT gst_concat_debug
G_GNUC_INTERNAL GType gst_concat_pad_get_type (void);
#define GST_TYPE_CONCAT_PAD (gst_concat_pad_get_type())
#define GST_CONCAT_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_CONCAT_PAD, GstConcatPad))
#define GST_CONCAT_PAD_CAST(obj) ((GstConcatPad *)(obj))
#define GST_CONCAT_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_CONCAT_PAD, GstConcatPadClass))
#define GST_IS_CONCAT_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_CONCAT_PAD))
#define GST_IS_CONCAT_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_CONCAT_PAD))
typedef struct _GstConcatPad GstConcatPad;
typedef struct _GstConcatPadClass GstConcatPadClass;
struct _GstConcatPad
{
GstPad parent;
GstSegment segment;
/* Protected by the concat lock */
gboolean flushing;
};
struct _GstConcatPadClass
{
GstPadClass parent;
};
G_DEFINE_TYPE (GstConcatPad, gst_concat_pad, GST_TYPE_PAD);
static void
gst_concat_pad_class_init (GstConcatPadClass * klass)
{
}
static void
gst_concat_pad_init (GstConcatPad * self)
{
gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
self->flushing = FALSE;
}
static GstStaticPadTemplate concat_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink_%u",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate concat_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
#define _do_init \
GST_DEBUG_CATEGORY_INIT (gst_concat_debug, "concat", 0, "concat element");
#define gst_concat_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstConcat, gst_concat, GST_TYPE_ELEMENT, _do_init);
static void gst_concat_dispose (GObject * object);
static void gst_concat_finalize (GObject * object);
static GstStateChangeReturn gst_concat_change_state (GstElement * element,
GstStateChange transition);
static GstPad *gst_concat_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
static void gst_concat_release_pad (GstElement * element, GstPad * pad);
static GstFlowReturn gst_concat_sink_chain (GstPad * pad, GstObject * parent,
GstBuffer * buffer);
static gboolean gst_concat_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static gboolean gst_concat_sink_query (GstPad * pad, GstObject * parent,
GstQuery * query);
static gboolean gst_concat_src_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static gboolean gst_concat_src_query (GstPad * pad, GstObject * parent,
GstQuery * query);
static gboolean gst_concat_switch_pad (GstConcat * self);
static void
gst_concat_class_init (GstConcatClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_concat_dispose);
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_concat_finalize);
gst_element_class_set_static_metadata (gstelement_class,
"Concat", "Generic", "Concatenate multiple streams",
"Sebastian Dröge <sebastian@centricular.com>");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&concat_sink_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&concat_src_template));
gstelement_class->request_new_pad =
GST_DEBUG_FUNCPTR (gst_concat_request_new_pad);
gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_concat_release_pad);
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_concat_change_state);
}
static void
gst_concat_init (GstConcat * self)
{
g_mutex_init (&self->lock);
g_cond_init (&self->cond);
self->srcpad = gst_pad_new_from_static_template (&concat_src_template, "src");
gst_pad_set_event_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_concat_src_event));
gst_pad_set_query_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_concat_src_query));
gst_pad_use_fixed_caps (self->srcpad);
gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
}
static void
gst_concat_dispose (GObject * object)
{
GstConcat *self = GST_CONCAT (object);
GList *item;
gst_object_replace ((GstObject **) & self->current_sinkpad, NULL);
restart:
for (item = GST_ELEMENT_PADS (object); item; item = g_list_next (item)) {
GstPad *pad = GST_PAD (item->data);
if (GST_PAD_IS_SINK (pad)) {
gst_element_release_request_pad (GST_ELEMENT (object), pad);
goto restart;
}
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_concat_finalize (GObject * object)
{
GstConcat *self = GST_CONCAT (object);
g_mutex_clear (&self->lock);
g_cond_clear (&self->cond);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstPad *
gst_concat_request_new_pad (GstElement * element, GstPadTemplate * templ,
const gchar * name, const GstCaps * caps)
{
GstConcat *self = GST_CONCAT (element);
GstPad *sinkpad;
gchar *pad_name;
GST_DEBUG_OBJECT (element, "requesting pad");
g_mutex_lock (&self->lock);
pad_name = g_strdup_printf ("sink_%u", self->pad_count);
self->pad_count++;
g_mutex_unlock (&self->lock);
sinkpad = GST_PAD_CAST (g_object_new (GST_TYPE_CONCAT_PAD,
"name", pad_name, "direction", templ->direction, "template", templ,
NULL));
g_free (pad_name);
gst_pad_set_chain_function (sinkpad,
GST_DEBUG_FUNCPTR (gst_concat_sink_chain));
gst_pad_set_event_function (sinkpad,
GST_DEBUG_FUNCPTR (gst_concat_sink_event));
gst_pad_set_query_function (sinkpad,
GST_DEBUG_FUNCPTR (gst_concat_sink_query));
GST_OBJECT_FLAG_SET (sinkpad, GST_PAD_FLAG_PROXY_CAPS);
GST_OBJECT_FLAG_SET (sinkpad, GST_PAD_FLAG_PROXY_ALLOCATION);
gst_pad_set_active (sinkpad, TRUE);
g_mutex_lock (&self->lock);
self->sinkpads = g_list_prepend (self->sinkpads, gst_object_ref (sinkpad));
if (!self->current_sinkpad)
self->current_sinkpad = gst_object_ref (sinkpad);
g_mutex_unlock (&self->lock);
gst_element_add_pad (element, sinkpad);
return sinkpad;
}
static void
gst_concat_release_pad (GstElement * element, GstPad * pad)
{
GstConcat *self = GST_CONCAT (element);
GstConcatPad *spad = GST_CONCAT_PAD_CAST (pad);
GList *l;
gboolean current_pad_removed = FALSE;
gboolean eos = FALSE;
GST_DEBUG_OBJECT (self, "releasing pad");
g_mutex_lock (&self->lock);
spad->flushing = TRUE;
g_cond_broadcast (&self->cond);
g_mutex_unlock (&self->lock);
gst_pad_set_active (pad, FALSE);
/* Now the pad is definitely not running anymore */
g_mutex_lock (&self->lock);
if (self->current_sinkpad == GST_PAD_CAST (spad)) {
eos = ! !gst_concat_switch_pad (self);
current_pad_removed = TRUE;
}
for (l = self->sinkpads; l; l = l->next) {
if ((gpointer) spad == l->data) {
gst_object_unref (spad);
self->sinkpads = g_list_delete_link (self->sinkpads, l);
break;
}
}
g_mutex_unlock (&self->lock);
gst_element_remove_pad (GST_ELEMENT_CAST (self), pad);
if (GST_STATE (self) > GST_STATE_READY) {
if (current_pad_removed && !eos)
gst_element_post_message (GST_ELEMENT_CAST (self),
gst_message_new_duration_changed (GST_OBJECT_CAST (self)));
/* FIXME: Sending EOS from application thread */
if (eos)
gst_pad_push_event (self->srcpad, gst_event_new_eos ());
}
}
/* Returns FALSE if flushing
* Must be called from the pad's streaming thread
*/
static gboolean
gst_concat_pad_wait (GstConcatPad * spad, GstConcat * self)
{
g_mutex_lock (&self->lock);
if (spad->flushing) {
g_mutex_unlock (&self->lock);
GST_DEBUG_OBJECT (spad, "Flushing");
return FALSE;
}
while (spad != GST_CONCAT_PAD_CAST (self->current_sinkpad)) {
GST_TRACE_OBJECT (spad, "Not the current sinkpad - waiting");
g_cond_wait (&self->cond, &self->lock);
if (spad->flushing) {
g_mutex_unlock (&self->lock);
GST_DEBUG_OBJECT (spad, "Flushing");
return FALSE;
}
}
/* This pad can only become not the current sinkpad from
* a) This streaming thread (we hold the stream lock)
* b) Releasing the pad (takes the stream lock, see above)
*
* Unlocking here is thus safe and we can safely push
* serialized data to our srcpad
*/
GST_DEBUG_OBJECT (spad, "Now the current sinkpad");
g_mutex_unlock (&self->lock);
return TRUE;
}
static GstFlowReturn
gst_concat_sink_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
GstFlowReturn ret;
GstConcat *self = GST_CONCAT (parent);
GstConcatPad *spad = GST_CONCAT_PAD (pad);
GST_LOG_OBJECT (pad, "received buffer %p", buffer);
if (!gst_concat_pad_wait (spad, self))
return GST_FLOW_FLUSHING;
if (self->last_stop == GST_CLOCK_TIME_NONE)
self->last_stop = spad->segment.start;
if (self->format == GST_FORMAT_TIME) {
GstClockTime start_time = GST_BUFFER_TIMESTAMP (buffer);
GstClockTime end_time = GST_CLOCK_TIME_NONE;
if (start_time != GST_CLOCK_TIME_NONE)
end_time = start_time;
if (GST_BUFFER_DURATION_IS_VALID (buffer))
end_time += GST_BUFFER_DURATION (buffer);
if (end_time != GST_CLOCK_TIME_NONE && end_time > self->last_stop)
self->last_stop = end_time;
} else {
self->last_stop += gst_buffer_get_size (buffer);
}
ret = gst_pad_push (self->srcpad, buffer);
GST_LOG_OBJECT (pad, "handled buffer %s", gst_flow_get_name (ret));
return ret;
}
/* Returns FALSE if no further pad, must be called with concat lock */
static gboolean
gst_concat_switch_pad (GstConcat * self)
{
GList *l;
gboolean next;
GstSegment segment;
gint64 last_stop;
segment = GST_CONCAT_PAD (self->current_sinkpad)->segment;
last_stop = self->last_stop;
if (last_stop == GST_CLOCK_TIME_NONE)
last_stop = segment.stop;
if (last_stop == GST_CLOCK_TIME_NONE)
last_stop = segment.start;
g_assert (last_stop != GST_CLOCK_TIME_NONE);
if (last_stop > segment.stop)
last_stop = segment.stop;
if (segment.format == GST_FORMAT_TIME)
last_stop =
gst_segment_to_running_time (&segment, segment.format, last_stop);
else
last_stop += segment.start;
self->current_start_offset += last_stop;
for (l = self->sinkpads; l; l = l->next) {
if ((gpointer) self->current_sinkpad == l->data) {
l = l->prev;
GST_DEBUG_OBJECT (self,
"Switching from pad %" GST_PTR_FORMAT " to %" GST_PTR_FORMAT,
self->current_sinkpad, l ? l->data : NULL);
gst_object_unref (self->current_sinkpad);
self->current_sinkpad = l ? gst_object_ref (l->data) : NULL;
g_cond_broadcast (&self->cond);
break;
}
}
next = self->current_sinkpad != NULL;
self->last_stop = GST_CLOCK_TIME_NONE;
return next;
}
static gboolean
gst_concat_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstConcat *self = GST_CONCAT (parent);
GstConcatPad *spad = GST_CONCAT_PAD_CAST (pad);
gboolean ret = TRUE;
GST_LOG_OBJECT (pad, "received event %" GST_PTR_FORMAT, event);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_STREAM_START:{
if (!gst_concat_pad_wait (spad, self)) {
ret = FALSE;
gst_event_unref (event);
} else {
ret = gst_pad_event_default (pad, parent, event);
}
break;
}
case GST_EVENT_SEGMENT:{
/* Drop segment event, we create our own one */
gst_event_copy_segment (event, &spad->segment);
gst_event_unref (event);
g_mutex_lock (&self->lock);
if (self->format == GST_FORMAT_UNDEFINED) {
if (spad->segment.format != GST_FORMAT_TIME
&& spad->segment.format != GST_FORMAT_BYTES) {
g_mutex_unlock (&self->lock);
GST_ELEMENT_ERROR (self, CORE, FAILED, (NULL),
("Can only operate in TIME or BYTES format"));
ret = FALSE;
break;
}
self->format = spad->segment.format;
GST_DEBUG_OBJECT (self, "Operating in %s format",
gst_format_get_name (self->format));
g_mutex_unlock (&self->lock);
} else if (self->format != spad->segment.format) {
g_mutex_unlock (&self->lock);
GST_ELEMENT_ERROR (self, CORE, FAILED, (NULL),
("Operating in %s format but new pad has %s",
gst_format_get_name (self->format),
gst_format_get_name (spad->segment.format)));
ret = FALSE;
} else {
g_mutex_unlock (&self->lock);
}
if (!gst_concat_pad_wait (spad, self)) {
ret = FALSE;
} else {
GstSegment segment = spad->segment;
/* We know no duration */
segment.duration = -1;
/* Update segment values to be contiguous with last stream */
if (self->format == GST_FORMAT_TIME) {
segment.base += self->current_start_offset;
} else {
/* Shift start/stop byte position */
segment.start += self->current_start_offset;
if (segment.stop != -1)
segment.stop += self->current_start_offset;
}
gst_pad_push_event (self->srcpad, gst_event_new_segment (&segment));
}
break;
}
case GST_EVENT_EOS:{
gst_event_unref (event);
if (!gst_concat_pad_wait (spad, self)) {
ret = FALSE;
} else {
gboolean next;
g_mutex_lock (&self->lock);
next = gst_concat_switch_pad (self);
g_mutex_unlock (&self->lock);
ret = TRUE;
if (!next) {
gst_pad_push_event (self->srcpad, gst_event_new_eos ());
} else {
gst_element_post_message (GST_ELEMENT_CAST (self),
gst_message_new_duration_changed (GST_OBJECT_CAST (self)));
}
}
break;
}
case GST_EVENT_FLUSH_START:{
g_mutex_lock (&self->lock);
spad->flushing = TRUE;
g_cond_broadcast (&self->cond);
g_mutex_unlock (&self->lock);
break;
}
case GST_EVENT_FLUSH_STOP:{
gst_segment_init (&spad->segment, GST_FORMAT_UNDEFINED);
spad->flushing = FALSE;
break;
}
default:{
/* Wait for other serialized events before forwarding */
if (GST_EVENT_IS_SERIALIZED (event) && !gst_concat_pad_wait (spad, self)) {
gst_event_unref (event);
ret = FALSE;
} else {
ret = gst_pad_event_default (pad, parent, event);
}
break;
}
}
return ret;
}
static gboolean
gst_concat_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstConcat *self = GST_CONCAT (parent);
GstConcatPad *spad = GST_CONCAT_PAD_CAST (pad);
gboolean ret = TRUE;
GST_LOG_OBJECT (pad, "received query %" GST_PTR_FORMAT, query);
switch (GST_QUERY_TYPE (query)) {
default:
/* Wait for other serialized queries before forwarding */
if (GST_QUERY_IS_SERIALIZED (query) && !gst_concat_pad_wait (spad, self)) {
ret = FALSE;
} else {
ret = gst_pad_query_default (pad, parent, query);
}
break;
}
return ret;
}
static gboolean
gst_concat_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstConcat *self = GST_CONCAT (parent);
gboolean ret = TRUE;
GST_LOG_OBJECT (pad, "received event %" GST_PTR_FORMAT, event);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:{
/* We don't support seeking */
gst_event_unref (event);
ret = FALSE;
break;
}
case GST_EVENT_QOS:{
GstQOSType type;
GstClockTimeDiff diff;
GstClockTime timestamp;
gdouble proportion;
gst_event_parse_qos (event, &type, &proportion, &diff, &timestamp);
gst_event_unref (event);
if (timestamp != GST_CLOCK_TIME_NONE
&& timestamp > self->current_start_offset) {
timestamp -= self->current_start_offset;
event = gst_event_new_qos (type, proportion, diff, timestamp);
ret = gst_pad_push_event (self->current_sinkpad, event);
} else {
ret = FALSE;
}
break;
}
default:
ret = gst_pad_event_default (pad, parent, event);
break;
}
return ret;
}
static gboolean
gst_concat_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
gboolean ret = TRUE;
GST_LOG_OBJECT (pad, "received query %" GST_PTR_FORMAT, query);
switch (GST_QUERY_TYPE (query)) {
default:
ret = gst_pad_query_default (pad, parent, query);
break;
}
return ret;
}
static void
reset_pad (const GValue * data, gpointer user_data)
{
GstPad *pad = g_value_get_object (data);
GstConcatPad *spad = GST_CONCAT_PAD_CAST (pad);
gst_segment_init (&spad->segment, GST_FORMAT_UNDEFINED);
spad->flushing = FALSE;
}
static void
unblock_pad (const GValue * data, gpointer user_data)
{
GstPad *pad = g_value_get_object (data);
GstConcatPad *spad = GST_CONCAT_PAD_CAST (pad);
spad->flushing = TRUE;
}
static GstStateChangeReturn
gst_concat_change_state (GstElement * element, GstStateChange transition)
{
GstConcat *self = GST_CONCAT (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:{
self->format = GST_FORMAT_UNDEFINED;
self->current_start_offset = 0;
self->last_stop = GST_CLOCK_TIME_NONE;
break;
}
case GST_STATE_CHANGE_PAUSED_TO_READY:{
GstIterator *iter = gst_element_iterate_sink_pads (element);
GstIteratorResult res;
g_mutex_lock (&self->lock);
do {
res = gst_iterator_foreach (iter, unblock_pad, NULL);
} while (res == GST_ITERATOR_RESYNC);
gst_iterator_free (iter);
g_cond_broadcast (&self->cond);
g_mutex_unlock (&self->lock);
if (res == GST_ITERATOR_ERROR)
return GST_STATE_CHANGE_FAILURE;
break;
}
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:{
GstIterator *iter = gst_element_iterate_sink_pads (element);
GstIteratorResult res;
do {
res = gst_iterator_foreach (iter, reset_pad, NULL);
} while (res == GST_ITERATOR_RESYNC);
gst_iterator_free (iter);
if (res == GST_ITERATOR_ERROR)
return GST_STATE_CHANGE_FAILURE;
break;
}
default:
break;
}
return ret;
}

73
plugins/elements/gstconcat.h Normal file
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@ -0,0 +1,73 @@
/* GStreamer concat element
*
* Copyright (c) 2014 Sebastian Dröge <sebastian@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef __GST_CONCAT_H__
#define __GST_CONCAT_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_CONCAT (gst_concat_get_type())
#define GST_CONCAT(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_CONCAT, GstConcat))
#define GST_CONCAT_CAST(obj) ((GstConcat*)obj)
#define GST_CONCAT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_CONCAT,GstConcatClass))
#define GST_IS_CONCAT(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CONCAT))
#define GST_IS_CONCAT_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CONCAT))
typedef struct _GstConcat GstConcat;
typedef struct _GstConcatClass GstConcatClass;
/**
* GstConcat:
*
* The private concat structure
*/
struct _GstConcat
{
/*< private >*/
GstElement parent;
GMutex lock;
GCond cond;
GList *sinkpads; /* Last is earliest */
GstPad *current_sinkpad;
GstPad *srcpad;
guint pad_count;
/* Format we're operating in */
GstFormat format;
/* In format, running time or accumulated byte offset */
guint64 current_start_offset;
/* Between current pad's segment start and stop */
guint64 last_stop;
};
struct _GstConcatClass
{
GstElementClass parent_class;
};
G_GNUC_INTERNAL GType gst_concat_get_type (void);
G_END_DECLS
#endif /* __GST_CONCAT_H__ */

4
plugins/elements/gstelements.c
View file

@ -28,6 +28,7 @@
#include <gst/gst.h>
#include "gstcapsfilter.h"
#include "gstconcat.h"
#include "gstdownloadbuffer.h"
#include "gstfakesink.h"
#include "gstfakesrc.h"
@ -52,6 +53,9 @@ plugin_init (GstPlugin * plugin)
if (!gst_element_register (plugin, "capsfilter", GST_RANK_NONE,
gst_capsfilter_get_type ()))
return FALSE;
if (!gst_element_register (plugin, "concat", GST_RANK_NONE,
gst_concat_get_type ()))
return FALSE;
if (!gst_element_register (plugin, "downloadbuffer", GST_RANK_NONE,
gst_download_buffer_get_type ()))
return FALSE;