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gst/playback/gststreamselector.*: Improve streamselector, make it select and unselect the current pad more intelligen...

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Original commit message from CVS:
* gst/playback/gststreamselector.c: (gst_selector_pad_get_type),
(gst_selector_pad_class_init), (gst_selector_pad_init),
(gst_selector_pad_finalize), (gst_selector_pad_reset),
(gst_selector_pad_get_linked_pads), (gst_selector_pad_event),
(gst_selector_pad_getcaps), (gst_selector_pad_bufferalloc),
(gst_selector_pad_chain), (gst_stream_selector_get_type),
(gst_stream_selector_base_init), (gst_stream_selector_class_init),
(gst_stream_selector_init), (gst_stream_selector_set_property),
(gst_stream_selector_get_linked_pad),
(gst_stream_selector_getcaps),
(gst_stream_selector_is_active_sinkpad),
(gst_stream_selector_activate_sinkpad),
(gst_stream_selector_get_linked_pads),
(gst_stream_selector_request_new_pad),
(gst_stream_selector_release_pad):
* gst/playback/gststreamselector.h:
Improve streamselector, make it select and unselect the current pad more
intelligently.
Subclass GstPad for the sinkpads of the selector.
Handle segments more correctly.
Fix caps negotiation.
Implement release_pad.
This commit is contained in:
Wim Taymans 2007-11-16 15:05:07 +00:00
parent 0df5f5b2e6
commit 3f43bfacd2
3 changed files with 434 additions and 142 deletions
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25
ChangeLog
View file

@ -1,3 +1,28 @@
2007-11-16 Wim Taymans <wim.taymans@gmail.com>
* gst/playback/gststreamselector.c: (gst_selector_pad_get_type),
(gst_selector_pad_class_init), (gst_selector_pad_init),
(gst_selector_pad_finalize), (gst_selector_pad_reset),
(gst_selector_pad_get_linked_pads), (gst_selector_pad_event),
(gst_selector_pad_getcaps), (gst_selector_pad_bufferalloc),
(gst_selector_pad_chain), (gst_stream_selector_get_type),
(gst_stream_selector_base_init), (gst_stream_selector_class_init),
(gst_stream_selector_init), (gst_stream_selector_set_property),
(gst_stream_selector_get_linked_pad),
(gst_stream_selector_getcaps),
(gst_stream_selector_is_active_sinkpad),
(gst_stream_selector_activate_sinkpad),
(gst_stream_selector_get_linked_pads),
(gst_stream_selector_request_new_pad),
(gst_stream_selector_release_pad):
* gst/playback/gststreamselector.h:
Improve streamselector, make it select and unselect the current pad more
intelligently.
Subclass GstPad for the sinkpads of the selector.
Handle segments more correctly.
Fix caps negotiation.
Implement release_pad.
2007-11-16 Wim Taymans <wim.taymans@gmail.com>
* gst/playback/gstdecodebin2.c: (gst_decode_bin_class_init),

546
gst/playback/gststreamselector.c
View file

@ -2,6 +2,7 @@
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2005 Jan Schmidt <thaytan@mad.scientist.com>
* Copyright (C) 2007 Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -19,13 +20,6 @@
* Boston, MA 02111-1307, USA.
*/
/*
* !!!!!!!!!!!!!!!!! Big phat warning. !!!!!!!!!!!!!!!!!!!!!!
*
* This is not a generic switch element. This is not to be used for
* any such purpose. Patches to make it do that will be rejected.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
@ -43,7 +37,8 @@ GST_ELEMENT_DETAILS ("StreamSelector",
"N-to-1 input stream_selectoring",
"Julien Moutte <julien@moutte.net>\n"
"Ronald S. Bultje <rbultje@ronald.bitfreak.net>\n"
"Jan Schmidt <thaytan@mad.scientist.com>");
"Jan Schmidt <thaytan@mad.scientist.com>\n"
"Wim Taymans <wim.taymans@gmail.com>");
static GstStaticPadTemplate gst_stream_selector_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink%d",
@ -62,23 +57,320 @@ enum
PROP_ACTIVE_PAD = 1
};
static gboolean gst_stream_selector_is_active_sinkpad (GstStreamSelector * sel,
GstPad * pad);
static GstPad *gst_stream_selector_activate_sinkpad (GstStreamSelector * sel,
GstPad * pad);
static GstPad *gst_stream_selector_get_linked_pad (GstPad * pad,
gboolean strict);
#define GST_TYPE_SELECTOR_PAD \
(gst_selector_pad_get_type())
#define GST_SELECTOR_PAD(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SELECTOR_PAD, GstSelectorPad))
#define GST_SELECTOR_PAD_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SELECTOR_PAD, GstSelectorPadClass))
#define GST_IS_SELECTOR_PAD(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SELECTOR_PAD))
#define GST_IS_SELECTOR_PAD_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SELECTOR_PAD))
#define GST_SELECTOR_PAD_CAST(obj) \
((GstSelectorPad *)(obj))
typedef struct _GstSelectorPad GstSelectorPad;
typedef struct _GstSelectorPadClass GstSelectorPadClass;
struct _GstSelectorPad
{
GstPad parent;
gboolean active;
gboolean eos;
gboolean segment_pending;
GstSegment segment;
};
struct _GstSelectorPadClass
{
GstPadClass parent;
};
static void gst_selector_pad_class_init (GstSelectorPadClass * klass);
static void gst_selector_pad_init (GstSelectorPad * pad);
static void gst_selector_pad_finalize (GObject * object);
static GstPadClass *selector_pad_parent_class = NULL;
static void gst_selector_pad_reset (GstSelectorPad * pad);
static gboolean gst_selector_pad_event (GstPad * pad, GstEvent * event);
static GstCaps *gst_selector_pad_getcaps (GstPad * pad);
static GList *gst_selector_pad_get_linked_pads (GstPad * pad);
static GstFlowReturn gst_selector_pad_chain (GstPad * pad, GstBuffer * buf);
static GstFlowReturn gst_selector_pad_bufferalloc (GstPad * pad,
guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
static GType
gst_selector_pad_get_type (void)
{
static GType selector_pad_type = 0;
if (!selector_pad_type) {
static const GTypeInfo selector_pad_info = {
sizeof (GstSelectorPadClass),
NULL,
NULL,
(GClassInitFunc) gst_selector_pad_class_init,
NULL,
NULL,
sizeof (GstSelectorPad),
0,
(GInstanceInitFunc) gst_selector_pad_init,
};
selector_pad_type =
g_type_register_static (GST_TYPE_PAD, "GstSelectorPad",
&selector_pad_info, 0);
}
return selector_pad_type;
}
static void
gst_selector_pad_class_init (GstSelectorPadClass * klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
selector_pad_parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = gst_selector_pad_finalize;
}
static void
gst_selector_pad_init (GstSelectorPad * pad)
{
}
static void
gst_selector_pad_finalize (GObject * object)
{
GstSelectorPad *pad;
pad = GST_SELECTOR_PAD_CAST (object);
G_OBJECT_CLASS (selector_pad_parent_class)->finalize (object);
}
static void
gst_selector_pad_reset (GstSelectorPad * pad)
{
pad->active = FALSE;
pad->eos = FALSE;
gst_segment_init (&pad->segment, GST_FORMAT_UNDEFINED);
}
/* strictly get the linked pad from the sinkpad. If the pad is active we return
* the srcpad else we return NULL */
static GList *
gst_selector_pad_get_linked_pads (GstPad * pad)
{
GstPad *otherpad;
otherpad = gst_stream_selector_get_linked_pad (pad, TRUE);
if (!otherpad)
return NULL;
/* need to drop the ref, internal linked pads is not MT safe */
gst_object_unref (otherpad);
return g_list_append (NULL, otherpad);
}
static gboolean
gst_selector_pad_event (GstPad * pad, GstEvent * event)
{
gboolean res = TRUE;
gboolean forward = TRUE;
GstStreamSelector *sel;
GstSelectorPad *selpad;
sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
selpad = GST_SELECTOR_PAD_CAST (pad);
/* only forward if we are dealing with the active sinkpad */
forward = gst_stream_selector_is_active_sinkpad (sel, pad);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:
gst_selector_pad_reset (selpad);
break;
case GST_EVENT_NEWSEGMENT:
{
gboolean update;
GstFormat format;
gdouble rate, arate;
gint64 start, stop, time;
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
&start, &stop, &time);
GST_DEBUG_OBJECT (sel,
"configured NEWSEGMENT update %d, rate %lf, applied rate %lf, "
"format %d, "
"%" G_GINT64_FORMAT " -- %" G_GINT64_FORMAT ", time %"
G_GINT64_FORMAT, update, rate, arate, format, start, stop, time);
gst_segment_set_newsegment_full (&selpad->segment, update,
rate, arate, format, start, stop, time);
/* if we are not going to forward the segment, mark the segment as
* pending */
if (!forward)
selpad->segment_pending = TRUE;
break;
}
case GST_EVENT_EOS:
selpad->eos = TRUE;
break;
default:
break;
}
if (forward)
res = gst_pad_push_event (sel->srcpad, event);
gst_object_unref (sel);
return res;
}
static GstCaps *
gst_selector_pad_getcaps (GstPad * pad)
{
GstStreamSelector *sel;
GstCaps *caps;
sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (sel, "Getting caps of srcpad peer");
caps = gst_pad_peer_get_caps (sel->srcpad);
if (caps == NULL)
caps = gst_caps_new_any ();
gst_object_unref (sel);
return caps;
}
static GstFlowReturn
gst_selector_pad_bufferalloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf)
{
GstStreamSelector *sel;
GstFlowReturn result;
GstPad *active_sinkpad;
sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
active_sinkpad = gst_stream_selector_activate_sinkpad (sel, pad);
/* Fallback allocation for buffers from pads except the selected one */
if (pad != active_sinkpad) {
GST_DEBUG_OBJECT (sel,
"Pad %s:%s is not selected. Performing fallback allocation",
GST_DEBUG_PAD_NAME (pad));
*buf = NULL;
result = GST_FLOW_OK;
} else {
result = gst_pad_alloc_buffer (sel->srcpad, offset, size, caps, buf);
/* FIXME: HACK. If buffer alloc returns not-linked, perform a fallback
* allocation. This should NOT be necessary, because playbin should
* properly block the source pad from running until it's finished hooking
* everything up, but playbin needs refactoring first. */
if (result == GST_FLOW_NOT_LINKED) {
GST_DEBUG_OBJECT (sel,
"No peer pad yet - performing fallback allocation for pad %s:%s",
GST_DEBUG_PAD_NAME (pad));
*buf = NULL;
result = GST_FLOW_OK;
}
}
gst_object_unref (sel);
return result;
}
static GstFlowReturn
gst_selector_pad_chain (GstPad * pad, GstBuffer * buf)
{
GstStreamSelector *sel;
GstFlowReturn res;
GstPad *active_sinkpad;
GstSelectorPad *selpad;
GstClockTime timestamp;
GstSegment *seg;
sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
selpad = GST_SELECTOR_PAD_CAST (pad);
seg = &selpad->segment;
active_sinkpad = gst_stream_selector_activate_sinkpad (sel, pad);
timestamp = GST_BUFFER_TIMESTAMP (buf);
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
GST_DEBUG_OBJECT (sel, "received timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (timestamp));
gst_segment_set_last_stop (seg, seg->format, timestamp);
}
/* Ignore buffers from pads except the selected one */
if (pad != active_sinkpad)
goto ignore;
/* if we have a pending segment, push it out now */
if (selpad->segment_pending) {
gst_pad_push_event (sel->srcpad, gst_event_new_new_segment_full (FALSE,
seg->rate, seg->applied_rate, seg->format, seg->start, seg->stop,
seg->time));
selpad->segment_pending = FALSE;
}
/* forward */
GST_DEBUG_OBJECT (sel, "Forwarding buffer %p from pad %s:%s", buf,
GST_DEBUG_PAD_NAME (pad));
res = gst_pad_push (sel->srcpad, buf);
done:
gst_object_unref (sel);
return res;
/* dropped buffers */
ignore:
{
GST_DEBUG_OBJECT (sel, "Ignoring buffer %p from pad %s:%s",
buf, GST_DEBUG_PAD_NAME (pad));
gst_buffer_unref (buf);
res = GST_FLOW_NOT_LINKED;
goto done;
}
}
static void gst_stream_selector_dispose (GObject * object);
static void gst_stream_selector_init (GstStreamSelector * sel);
static void gst_stream_selector_base_init (GstStreamSelectorClass * klass);
static void gst_stream_selector_class_init (GstStreamSelectorClass * klass);
static GstCaps *gst_stream_selector_getcaps (GstPad * pad);
static GList *gst_stream_selector_get_linked_pads (GstPad * pad);
static void gst_stream_selector_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_stream_selector_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstPad *gst_stream_selector_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * unused);
static GstFlowReturn gst_stream_selector_chain (GstPad * pad, GstBuffer * buf);
static void gst_stream_selector_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_stream_selector_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_stream_selector_bufferalloc (GstPad * pad,
guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
static void gst_stream_selector_release_pad (GstElement * element,
GstPad * pad);
static GList *gst_stream_selector_get_linked_pads (GstPad * pad);
static GstCaps *gst_stream_selector_getcaps (GstPad * pad);
static GstElementClass *parent_class = NULL;
GType
@ -98,11 +390,9 @@ gst_stream_selector_get_type (void)
0,
(GInstanceInitFunc) gst_stream_selector_init,
};
stream_selector_type =
g_type_register_static (GST_TYPE_ELEMENT,
"GstStreamSelector", &stream_selector_info, 0);
GST_DEBUG_CATEGORY_INIT (stream_selector_debug,
"streamselector", 0, "A stream-selector element");
}
@ -116,7 +406,6 @@ gst_stream_selector_base_init (GstStreamSelectorClass * klass)
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_set_details (element_class, &gst_stream_selector_details);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_stream_selector_sink_factory));
gst_element_class_add_pad_template (element_class,
@ -130,19 +419,16 @@ gst_stream_selector_class_init (GstStreamSelectorClass * klass)
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property =
GST_DEBUG_FUNCPTR (gst_stream_selector_set_property);
gobject_class->get_property =
GST_DEBUG_FUNCPTR (gst_stream_selector_get_property);
g_object_class_install_property (gobject_class, PROP_ACTIVE_PAD,
g_param_spec_string ("active-pad", "Active pad", "Name of the currently"
" active sink pad", NULL, G_PARAM_READWRITE));
g_param_spec_string ("active-pad", "Active pad",
"Name of the currently" " active sink pad", NULL, G_PARAM_READWRITE));
gobject_class->dispose = gst_stream_selector_dispose;
gstelement_class->request_new_pad = gst_stream_selector_request_new_pad;
gstelement_class->release_pad = gst_stream_selector_release_pad;
}
static void
@ -154,12 +440,10 @@ gst_stream_selector_init (GstStreamSelector * sel)
gst_pad_set_getcaps_function (sel->srcpad,
GST_DEBUG_FUNCPTR (gst_stream_selector_getcaps));
gst_element_add_pad (GST_ELEMENT (sel), sel->srcpad);
/* sinkpad management */
sel->active_sinkpad = NULL;
sel->nb_sinkpads = 0;
//GST_OBJECT_FLAG_SET (sel, GST_ELEMENT_WORK_IN_PLACE);
gst_segment_init (&sel->segment, GST_FORMAT_UNDEFINED);
}
static void
@ -187,40 +471,28 @@ gst_stream_selector_set_property (GObject * object, guint prop_id,
GstPad *pad = NULL;
GstPad **active_pad_p;
if (strcmp (pad_name, "") != 0) {
if (strcmp (pad_name, "") != 0)
pad = gst_element_get_pad (GST_ELEMENT (object), pad_name);
}
GST_OBJECT_LOCK (object);
if (pad == sel->active_sinkpad) {
GST_OBJECT_UNLOCK (object);
if (pad)
gst_object_unref (pad);
break;
}
#if 0
if (sel->active_sinkpad && (GST_STATE (sel) >= GST_STATE_PAUSED)) {
gst_pad_set_active (sel->active_sinkpad, FALSE);
GST_DEBUG_OBJECT (sel, "Deactivating pad %" GST_PTR_FORMAT,
sel->active_sinkpad);
}
#endif
if (pad != sel->active_sinkpad) {
GstSelectorPad *selpad;
active_pad_p = &sel->active_sinkpad;
gst_object_replace ((GstObject **) active_pad_p, GST_OBJECT_CAST (pad));
selpad = GST_SELECTOR_PAD_CAST (pad);
/* we can only activate pads that have data received */
if (selpad && !selpad->active) {
GST_DEBUG_OBJECT (sel, "No data received on pad %" GST_PTR_FORMAT,
pad);
} else {
active_pad_p = &sel->active_sinkpad;
gst_object_replace ((GstObject **) active_pad_p,
GST_OBJECT_CAST (pad));
GST_DEBUG_OBJECT (sel, "New active pad is %" GST_PTR_FORMAT,
sel->active_sinkpad);
}
}
GST_OBJECT_UNLOCK (object);
if (pad)
gst_object_unref (pad);
#if 0
if (sel->active_sinkpad && (GST_STATE (sel) >= GST_STATE_PAUSED)) {
gst_pad_set_active (sel->active_sinkpad, TRUE);
GST_DEBUG_OBJECT (sel, "Activating pad %" GST_PTR_FORMAT,
sel->active_sinkpad);
}
#endif
GST_DEBUG_OBJECT (sel, "New active pad is %" GST_PTR_FORMAT,
sel->active_sinkpad);
GST_OBJECT_UNLOCK (object);
break;
}
default:
@ -255,93 +527,98 @@ gst_stream_selector_get_property (GObject * object, guint prop_id,
static GstPad *
gst_stream_selector_get_linked_pad (GstPad * pad, gboolean strict)
{
GstStreamSelector *sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
GstStreamSelector *sel;
GstPad *otherpad = NULL;
sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
GST_OBJECT_LOCK (sel);
if (pad == sel->srcpad)
otherpad = sel->active_sinkpad;
else if (pad == sel->active_sinkpad || !strict)
otherpad = sel->srcpad;
if (otherpad)
gst_object_ref (otherpad);
GST_OBJECT_UNLOCK (sel);
gst_object_unref (sel);
return otherpad;
}
static GstCaps *
gst_stream_selector_getcaps (GstPad * pad)
{
GstPad *otherpad = gst_stream_selector_get_linked_pad (pad, FALSE);
GstPad *otherpad;
GstObject *parent;
GstCaps *caps;
otherpad = gst_stream_selector_get_linked_pad (pad, FALSE);
parent = gst_object_get_parent (GST_OBJECT (pad));
if (!otherpad) {
GST_DEBUG_OBJECT (parent,
"Pad %s:%s not linked, returning ANY", GST_DEBUG_PAD_NAME (pad));
gst_object_unref (parent);
return gst_caps_new_any ();
caps = gst_caps_new_any ();
} else {
GST_DEBUG_OBJECT (parent,
"Pad %s:%s is linked (to %s:%s), returning peer caps",
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (otherpad));
/* if the peer has caps, use those. If the pad is not linked, this function
* returns NULL and we return ANY */
if (!(caps = gst_pad_peer_get_caps (otherpad)))
caps = gst_caps_new_any ();
gst_object_unref (otherpad);
}
GST_DEBUG_OBJECT (parent,
"Pad %s:%s is linked (to %s:%s), returning allowed-caps",
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (otherpad));
gst_object_unref (parent);
return gst_pad_peer_get_caps (otherpad);
return caps;
}
static GstFlowReturn
gst_stream_selector_bufferalloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf)
/* check if the pad is the active sinkpad */
static gboolean
gst_stream_selector_is_active_sinkpad (GstStreamSelector * sel, GstPad * pad)
{
GstStreamSelector *sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
GstFlowReturn result;
GstPad *active_sinkpad;
GstSelectorPad *selpad;
gboolean res;
selpad = GST_SELECTOR_PAD_CAST (pad);
GST_OBJECT_LOCK (sel);
active_sinkpad = sel->active_sinkpad;
res = (pad == sel->active_sinkpad);
GST_OBJECT_UNLOCK (sel);
/* Fallback allocation for buffers from pads except the selected one */
if (pad != active_sinkpad) {
GST_DEBUG_OBJECT (sel,
"Pad %s:%s is not selected. Performing fallback allocation",
GST_DEBUG_PAD_NAME (pad));
return res;
}
*buf = NULL;
result = GST_FLOW_OK;
} else {
result = gst_pad_alloc_buffer (sel->srcpad, offset, size, caps, buf);
/* Get or create the active sinkpad */
static GstPad *
gst_stream_selector_activate_sinkpad (GstStreamSelector * sel, GstPad * pad)
{
GstPad *active_sinkpad;
GstSelectorPad *selpad;
/* FIXME: HACK. If buffer alloc returns not-linked, perform a fallback
* allocation. This should NOT be necessary, because playbin should
* properly block the source pad from running until it's finished hooking
* everything up, but playbin needs refactoring first. */
if (result == GST_FLOW_NOT_LINKED) {
GST_DEBUG_OBJECT (sel,
"No peer pad yet - performing fallback allocation for pad %s:%s",
GST_DEBUG_PAD_NAME (pad));
selpad = GST_SELECTOR_PAD_CAST (pad);
*buf = NULL;
result = GST_FLOW_OK;
}
GST_OBJECT_LOCK (sel);
selpad->active = TRUE;
active_sinkpad = sel->active_sinkpad;
if (active_sinkpad == NULL) {
/* first pad we get an alloc on becomes the activated pad by default */
active_sinkpad = sel->active_sinkpad = gst_object_ref (pad);
GST_DEBUG_OBJECT (sel, "Activating pad %s:%s", GST_DEBUG_PAD_NAME (pad));
}
GST_OBJECT_UNLOCK (sel);
gst_object_unref (sel);
return result;
return active_sinkpad;
}
static GList *
gst_stream_selector_get_linked_pads (GstPad * pad)
{
GstPad *otherpad = gst_stream_selector_get_linked_pad (pad, TRUE);
GstPad *otherpad;
otherpad = gst_stream_selector_get_linked_pad (pad, TRUE);
if (!otherpad)
return NULL;
/* need to drop the ref, internal linked pads is not MT safe */
gst_object_unref (otherpad);
return g_list_append (NULL, otherpad);
}
@ -349,65 +626,52 @@ static GstPad *
gst_stream_selector_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * unused)
{
GstStreamSelector *sel = GST_STREAM_SELECTOR (element);
GstStreamSelector *sel;
gchar *name = NULL;
GstPad *sinkpad = NULL;
sel = GST_STREAM_SELECTOR (element);
g_return_val_if_fail (templ->direction == GST_PAD_SINK, NULL);
GST_LOG_OBJECT (sel, "Creating new pad %d", sel->nb_sinkpads);
GST_OBJECT_LOCK (sel);
name = g_strdup_printf ("sink%d", sel->nb_sinkpads++);
sinkpad = gst_pad_new_from_template (templ, name);
sinkpad = g_object_new (GST_TYPE_SELECTOR_PAD,
"name", name, "direction", templ->direction, "template", templ, NULL);
g_free (name);
if (sel->active_sinkpad == NULL)
sel->active_sinkpad = gst_object_ref (sinkpad);
GST_OBJECT_UNLOCK (sel);
gst_pad_set_event_function (sinkpad,
GST_DEBUG_FUNCPTR (gst_selector_pad_event));
gst_pad_set_getcaps_function (sinkpad,
GST_DEBUG_FUNCPTR (gst_stream_selector_getcaps));
GST_DEBUG_FUNCPTR (gst_selector_pad_getcaps));
gst_pad_set_chain_function (sinkpad,
GST_DEBUG_FUNCPTR (gst_stream_selector_chain));
GST_DEBUG_FUNCPTR (gst_selector_pad_chain));
gst_pad_set_internal_link_function (sinkpad,
GST_DEBUG_FUNCPTR (gst_stream_selector_get_linked_pads));
GST_DEBUG_FUNCPTR (gst_selector_pad_get_linked_pads));
gst_pad_set_bufferalloc_function (sinkpad,
GST_DEBUG_FUNCPTR (gst_stream_selector_bufferalloc));
GST_DEBUG_FUNCPTR (gst_selector_pad_bufferalloc));
gst_pad_set_active (sinkpad, TRUE);
gst_element_add_pad (GST_ELEMENT (sel), sinkpad);
return sinkpad;
}
static GstFlowReturn
gst_stream_selector_chain (GstPad * pad, GstBuffer * buf)
static void
gst_stream_selector_release_pad (GstElement * element, GstPad * pad)
{
GstStreamSelector *sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
GstFlowReturn res;
GstPad *active_sinkpad;
GstStreamSelector *sel;
sel = GST_STREAM_SELECTOR (element);
GST_LOG_OBJECT (sel, "Releasing pad %s:%s", GST_DEBUG_PAD_NAME (pad));
GST_OBJECT_LOCK (sel);
active_sinkpad = sel->active_sinkpad;
/* if the pad was the active pad, makes us select a new one */
if (sel->active_sinkpad == pad) {
GST_DEBUG_OBJECT (sel, "Deactivating pad %s:%s", GST_DEBUG_PAD_NAME (pad));
sel->active_sinkpad = NULL;
}
GST_OBJECT_UNLOCK (sel);
/* Ignore buffers from pads except the selected one */
if (pad != active_sinkpad) {
GST_DEBUG_OBJECT (sel, "Ignoring buffer %p from pad %s:%s",
buf, GST_DEBUG_PAD_NAME (pad));
gst_object_unref (sel);
gst_buffer_unref (buf);
return GST_FLOW_NOT_LINKED;
}
/* forward */
GST_DEBUG_OBJECT (sel, "Forwarding buffer %p from pad %s:%s",
buf, GST_DEBUG_PAD_NAME (pad));
res = gst_pad_push (sel->srcpad, buf);
gst_object_unref (sel);
return res;
gst_pad_set_active (pad, FALSE);
gst_element_remove_pad (GST_ELEMENT (sel), pad);
}

5
gst/playback/gststreamselector.h
View file

@ -42,9 +42,12 @@ typedef struct _GstStreamSelectorClass GstStreamSelectorClass;
struct _GstStreamSelector {
GstElement element;
GstPad *active_sinkpad;
GstPad *srcpad;
GstPad *active_sinkpad;
guint nb_sinkpads;
GstSegment segment;
};
struct _GstStreamSelectorClass {