mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2025-04-26 06:54:49 +00:00
Code Issues 1 Projects Releases Wiki Activity

examples/switch/switcher.c (loop, my_bus_callback, switch_timer, last_message_received, main): gst/switch/gstswitch.c...

Browse source 
Original commit message from CVS:
* configure.ac:
* examples/Makefile.am:
* examples/switch/switcher.c (loop, my_bus_callback, switch_timer,
last_message_received, main):
* gst/switch/gstswitch.c (GST_CAT_DEFAULT, gst_switch_details,
gst_switch_src_factory, parent_class, gst_switch_release_pad,
gst_switch_request_new_pad, gst_switch_chain, gst_switch_event,
gst_switch_set_property, gst_switch_get_property,
gst_switch_get_linked_pad, gst_switch_getcaps,
gst_switch_bufferalloc, gst_switch_get_linked_pads,
gst_switch_dispose, gst_switch_init, gst_switch_base_init,
gst_switch_class_init):
* gst/switch/gstswitch.h (GstSwitch, GstSwitchClass, _GstSwitch,
element, active_sinkpad, srcpad, nb_sinkpads, newsegment_events,
need_to_send_newsegment):
Port switch element and example program to 0.10.
This commit is contained in:
Zaheer Abbas Merali 2007-05-03 16:49:05 +00:00
parent 2450ca4d3a
commit b1a2c30401
6 changed files with 409 additions and 282 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
ChangeLog
View file

@ -1,3 +1,22 @@
2007-05-03 Zaheer Abbas Merali <<zaheerabbas at merali dot org>>
* configure.ac:
* examples/Makefile.am:
* examples/switch/switcher.c (loop, my_bus_callback, switch_timer,
last_message_received, main):
* gst/switch/gstswitch.c (GST_CAT_DEFAULT, gst_switch_details,
gst_switch_src_factory, parent_class, gst_switch_release_pad,
gst_switch_request_new_pad, gst_switch_chain, gst_switch_event,
gst_switch_set_property, gst_switch_get_property,
gst_switch_get_linked_pad, gst_switch_getcaps,
gst_switch_bufferalloc, gst_switch_get_linked_pads,
gst_switch_dispose, gst_switch_init, gst_switch_base_init,
gst_switch_class_init):
* gst/switch/gstswitch.h (GstSwitch, GstSwitchClass, _GstSwitch,
element, active_sinkpad, srcpad, nb_sinkpads, newsegment_events,
need_to_send_newsegment):
Port switch element and example program to 0.10.
2007-05-02 Sebastian Dröge <slomo@circular-chaos.org> 2007-05-02 Sebastian Dröge <slomo@circular-chaos.org>
* ext/wavpack/gstwavpack.c: (plugin_init): * ext/wavpack/gstwavpack.c: (plugin_init):

3
configure.ac
View file

@ -99,6 +99,7 @@ GST_PLUGINS_ALL="\
rtpmanager \ rtpmanager \
spectrum \ spectrum \
speed \ speed \
switch \
qtdemux \ qtdemux \
tta \ tta \
videocrop \ videocrop \
@ -1098,6 +1099,7 @@ gst/replaygain/Makefile
gst/rtpmanager/Makefile gst/rtpmanager/Makefile
gst/spectrum/Makefile gst/spectrum/Makefile
gst/speed/Makefile gst/speed/Makefile
gst/switch/Makefile
gst/qtdemux/Makefile gst/qtdemux/Makefile
gst/tta/Makefile gst/tta/Makefile
gst/videocrop/Makefile gst/videocrop/Makefile
@ -1120,6 +1122,7 @@ sys/osxvideo/Makefile
examples/Makefile examples/Makefile
examples/app/Makefile examples/app/Makefile
examples/directfb/Makefile examples/directfb/Makefile
examples/switch/Makefile
ext/amrwb/Makefile ext/amrwb/Makefile
ext/alsaspdif/Makefile ext/alsaspdif/Makefile
ext/bz2/Makefile ext/bz2/Makefile

4
examples/Makefile.am
View file

@ -5,5 +5,5 @@ else
DIRECTFB_DIR= DIRECTFB_DIR=
endif endif
SUBDIRS= $(DIRECTFB_DIR) app SUBDIRS= $(DIRECTFB_DIR) app switch
DIST_SUBDIRS= directfb app DIST_SUBDIRS= directfb app switch

112
examples/switch/switcher.c
View file

@ -20,51 +20,85 @@
#ifdef HAVE_CONFIG_H #ifdef HAVE_CONFIG_H
#include "config.h" #include "config.h"
#endif #endif
#include <string.h>
#include <gst/gst.h> #include <gst/gst.h>
static GMainLoop *loop = NULL; static GMainLoop *loop = NULL;
static void
got_eos (GstElement * pipeline)
{
g_main_loop_quit (loop);
}
static gboolean static gboolean
idle_iterate (GstElement * pipeline) my_bus_callback (GstBus * bus, GstMessage * message, gpointer data)
{ {
gst_bin_iterate (GST_BIN (pipeline)); g_print ("Got %s message\n", GST_MESSAGE_TYPE_NAME (message));
return (GST_STATE (GST_ELEMENT (pipeline)) == GST_STATE_PLAYING);
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:{
GError *err;
gchar *debug;
gst_message_parse_error (message, &err, &debug);
g_print ("Error: %s\n", err->message);
g_error_free (err);
g_free (debug);
g_main_loop_quit (loop);
break;
}
case GST_MESSAGE_EOS:
/* end-of-stream */
g_main_loop_quit (loop);
break;
default:
/* unhandled message */
break;
}
/* we want to be notified again the next time there is a message
* on the bus, so returning TRUE (FALSE means we want to stop watching
* for messages on the bus and our callback should not be called again)
*/
return TRUE;
} }
static gboolean static gboolean
switch_timer (GstElement * video_switch) switch_timer (GstElement * video_switch)
{ {
gint nb_sources, active_source; gint nb_sources;
gchar *active_pad;
g_object_get (G_OBJECT (video_switch), "nb_sources", &nb_sources, NULL); g_object_get (G_OBJECT (video_switch), "num-sources", &nb_sources, NULL);
g_object_get (G_OBJECT (video_switch), "active_source", &active_source, NULL); g_object_get (G_OBJECT (video_switch), "active-pad", &active_pad, NULL);
active_source++; if (strcmp (active_pad, "sink0") == 0) {
if (active_source > nb_sources - 1) g_object_set (G_OBJECT (video_switch), "active-pad", "sink1", NULL);
active_source = 0; } else {
g_object_set (G_OBJECT (video_switch), "active-pad", "sink0", NULL);
g_object_set (G_OBJECT (video_switch), "active_source", active_source, NULL); }
g_message ("current number of sources : %d, active source %s",
g_message ("current number of sources : %d, active source %d", nb_sources, active_pad);
nb_sources, active_source);
return (GST_STATE (GST_ELEMENT (video_switch)) == GST_STATE_PLAYING); return (GST_STATE (GST_ELEMENT (video_switch)) == GST_STATE_PLAYING);
} }
static void
last_message_received (GObject * segment)
{
gchar *last_message;
g_object_get (segment, "last_message", &last_message, NULL);
g_print ("last-message: %s\n", last_message);
g_free (last_message);
}
int int
main (int argc, char *argv[]) main (int argc, char *argv[])
{ {
GstElement *pipeline, *src1, *src2, *video_switch, *video_sink; GstElement *pipeline, *src1, *src2, *video_switch, *video_sink, *segment;
GstElement *sink1_sync, *sink2_sync;
GstBus *bus;
/* Initing GStreamer library */ /* Initing GStreamer library */
gst_init (&argc, &argv); gst_init (&argc, &argv);
@ -77,20 +111,30 @@ main (int argc, char *argv[])
src2 = gst_element_factory_make ("videotestsrc", "src2"); src2 = gst_element_factory_make ("videotestsrc", "src2");
g_object_set (G_OBJECT (src2), "pattern", 1, NULL); g_object_set (G_OBJECT (src2), "pattern", 1, NULL);
video_switch = gst_element_factory_make ("switch", "video_switch"); video_switch = gst_element_factory_make ("switch", "video_switch");
video_sink = gst_element_factory_make (DEFAULT_VIDEOSINK, "video_sink"); segment = gst_element_factory_make ("identity", "identity-segment");
g_signal_connect (G_OBJECT (segment), "notify::last-message",
gst_bin_add_many (GST_BIN (pipeline), src1, src2, video_switch, G_CALLBACK (last_message_received), segment);
video_sink, NULL); g_object_set (G_OBJECT (segment), "single-segment", TRUE, NULL);
video_sink = gst_element_factory_make ("ximagesink", "video_sink");
gst_element_link (src1, video_switch); //g_object_set (G_OBJECT (video_sink), "sync", FALSE, NULL);
gst_element_link (src2, video_switch); sink1_sync = gst_element_factory_make ("identity", "sink0_sync");
gst_element_link (video_switch, video_sink); g_object_set (G_OBJECT (sink1_sync), "sync", TRUE, NULL);
sink2_sync = gst_element_factory_make ("identity", "sink1_sync");
g_signal_connect (G_OBJECT (pipeline), "eos", G_CALLBACK (got_eos), NULL); g_object_set (G_OBJECT (sink2_sync), "sync", TRUE, NULL);
gst_bin_add_many (GST_BIN (pipeline), src1, src2, segment, video_switch,
video_sink, sink1_sync, sink2_sync, NULL);
gst_element_link (src1, sink1_sync);
gst_element_link (sink1_sync, video_switch);
gst_element_link (src2, sink2_sync);
gst_element_link (sink2_sync, video_switch);
gst_element_link (video_switch, segment);
gst_element_link (segment, video_sink);
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_watch (bus, my_bus_callback, NULL);
gst_object_unref (bus);
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING); gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
g_idle_add ((GSourceFunc) idle_iterate, pipeline);
g_timeout_add (2000, (GSourceFunc) switch_timer, video_switch); g_timeout_add (2000, (GSourceFunc) switch_timer, video_switch);
g_main_loop_run (loop); g_main_loop_run (loop);

533
gst/switch/gstswitch.c
View file

@ -23,7 +23,27 @@
/* Object header */ /* Object header */
#include "gstswitch.h" #include "gstswitch.h"
#include <gst/gst.h>
#include <string.h>
/**
* This element allows runtime switching between many sources. It outputs a
* new segment every time it switches. The input sources are expected to be
* rate controlled/live or synced to the clock using identity sync=true upstream
* of this element. If they are not, your cpu usage will hike up.
*
* Example pipelines:
* videotestsrc pattern=0 ! identity sync=true \
* switch ! ximagesink
* videotestsrc pattern=1 ! identity sync=true /
*
* videotestsrc pattern=0 ! identity sync=true \
* switch !
* identity single-segment=true !
* theoraenc ! oggmux ! filesink
* videotestsrc pattern=1 ! identity sync=true /
*/
enum enum
{ {
ARG_0, ARG_0,
@ -32,13 +52,14 @@ enum
}; };
GST_DEBUG_CATEGORY_STATIC (switch_debug); GST_DEBUG_CATEGORY_STATIC (switch_debug);
#define GST_CAT_DEFAULT switch_debug
/* ElementFactory information */ /* ElementFactory information */
static const GstElementDetails gst_switch_details = static const GstElementDetails gst_switch_details =
GST_ELEMENT_DETAILS ("Switch", GST_ELEMENT_DETAILS ("Switch",
"Generic", "Generic",
"N-to-1 input switching", "N-to-1 input switching",
"Julien Moutte <julien@moutte.net>"); "Julien Moutte <julien@moutte.net>\n"
"Zaheer Merali <zaheerabbas at merali dot org>");
static GstStaticPadTemplate gst_switch_sink_factory = static GstStaticPadTemplate gst_switch_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink%d", GST_STATIC_PAD_TEMPLATE ("sink%d",
@ -46,7 +67,19 @@ GST_STATIC_PAD_TEMPLATE ("sink%d",
GST_PAD_REQUEST, GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY); GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate gst_switch_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static GstElementClass *parent_class = NULL; static GstElementClass *parent_class = NULL;
static GstCaps *gst_switch_getcaps (GstPad * pad);
static GList *gst_switch_get_linked_pads (GstPad * pad);
static GstFlowReturn gst_switch_bufferalloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf);
static GstFlowReturn gst_switch_chain (GstPad * pad, GstBuffer * buf);
static gboolean gst_switch_event (GstPad * pad, GstEvent * event);
/* ============================================================= */ /* ============================================================= */
/* */ /* */
@ -54,12 +87,11 @@ static GstElementClass *parent_class = NULL;
/* */ /* */
/* ============================================================= */ /* ============================================================= */
static void static void
gst_switch_release_pad (GstElement * element, GstPad * pad) gst_switch_release_pad (GstElement * element, GstPad * pad)
{ {
GList *sinkpads = NULL;
GstSwitch *gstswitch = NULL; GstSwitch *gstswitch = NULL;
GstSwitchPad *switchpad = NULL;
g_return_if_fail (GST_IS_SWITCH (element)); g_return_if_fail (GST_IS_SWITCH (element));
@ -67,45 +99,36 @@ gst_switch_release_pad (GstElement * element, GstPad * pad)
GST_LOG_OBJECT (gstswitch, "releasing requested pad %p", pad); GST_LOG_OBJECT (gstswitch, "releasing requested pad %p", pad);
sinkpads = gstswitch->sinkpads; gst_element_remove_pad (element, pad);
GST_OBJECT_LOCK (gstswitch);
gstswitch->nb_sinkpads--;
if (gstswitch->active_sinkpad == pad) {
gst_object_unref (gstswitch->active_sinkpad);
gstswitch->active_sinkpad = NULL;
if (gstswitch->nb_sinkpads == 0) {
GstIterator *iter =
gst_element_iterate_sink_pads (GST_ELEMENT (gstswitch));
gpointer active_sinkpad_store = (gpointer) gstswitch->active_sinkpad;
/* Walking through our pad list searching for the pad we want to release */ if (gst_iterator_next (iter, &active_sinkpad_store) == GST_ITERATOR_DONE) {
while (sinkpads) { GST_LOG_OBJECT (gstswitch, "active pad now %p",
switchpad = sinkpads->data; gstswitch->active_sinkpad);
} else {
if (switchpad && switchpad->sinkpad == pad) GST_LOG_OBJECT (gstswitch, "could not get first sinkpad");
break; }
else gst_iterator_free (iter);
switchpad = NULL;
sinkpads = g_list_next (sinkpads);
}
/* Releasing the found pad */
if (switchpad) {
/* We unref the data of that pad to loose our reference */
gst_data_unref (switchpad->data);
/* If data has not been forwarded we have to destroy it */
if (!switchpad->forwarded && switchpad->data) {
gst_data_unref (switchpad->data);
} }
gst_element_remove_pad (element, pad);
gstswitch->sinkpads = g_list_remove (gstswitch->sinkpads, switchpad);
gstswitch->nb_sinkpads--;
if (gstswitch->active_sinkpad >= gstswitch->nb_sinkpads)
gstswitch->active_sinkpad = 0;
g_free (switchpad);
} }
GST_OBJECT_UNLOCK (gstswitch);
} }
static GstPad * static GstPad *
gst_switch_request_new_pad (GstElement * element, gst_switch_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * unused) GstPadTemplate * templ, const gchar * unused)
{ {
char *name = NULL; gchar *name = NULL;
GstPad *sinkpad = NULL; GstPad *sinkpad = NULL;
GstSwitch *gstswitch = NULL; GstSwitch *gstswitch = NULL;
GstSwitchPad *switchpad = NULL;
g_return_val_if_fail (GST_IS_SWITCH (element), NULL); g_return_val_if_fail (GST_IS_SWITCH (element), NULL);
@ -117,6 +140,7 @@ gst_switch_request_new_pad (GstElement * element,
return NULL; return NULL;
} }
GST_OBJECT_LOCK (gstswitch);
name = g_strdup_printf ("sink%d", gstswitch->nb_sinkpads); name = g_strdup_printf ("sink%d", gstswitch->nb_sinkpads);
sinkpad = gst_pad_new_from_template (templ, name); sinkpad = gst_pad_new_from_template (templ, name);
@ -124,185 +148,109 @@ gst_switch_request_new_pad (GstElement * element,
if (name) if (name)
g_free (name); g_free (name);
/* That pad will proxy caps and link */ if (gstswitch->active_sinkpad == NULL)
gst_pad_set_link_function (sinkpad, gstswitch->active_sinkpad = gst_object_ref (sinkpad);
GST_DEBUG_FUNCPTR (gst_pad_proxy_pad_link)); GST_OBJECT_UNLOCK (gstswitch);
gst_pad_set_getcaps_function (sinkpad, gst_pad_set_getcaps_function (sinkpad,
GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps)); GST_DEBUG_FUNCPTR (gst_switch_getcaps));
gst_pad_set_chain_function (sinkpad, GST_DEBUG_FUNCPTR (gst_switch_chain));
gst_pad_set_internal_link_function (sinkpad,
GST_DEBUG_FUNCPTR (gst_switch_get_linked_pads));
gst_pad_set_bufferalloc_function (sinkpad,
GST_DEBUG_FUNCPTR (gst_switch_bufferalloc));
gst_pad_set_event_function (sinkpad, GST_DEBUG_FUNCPTR (gst_switch_event));
gst_pad_set_active (sinkpad, TRUE);
gst_element_add_pad (GST_ELEMENT (gstswitch), sinkpad); gst_element_add_pad (GST_ELEMENT (gstswitch), sinkpad);
switchpad = g_new0 (GstSwitchPad, 1);
if (!switchpad)
return NULL;
switchpad->sinkpad = sinkpad;
switchpad->data = NULL;
switchpad->forwarded = FALSE;
switchpad->eos = FALSE;
gstswitch->sinkpads = g_list_insert (gstswitch->sinkpads, switchpad,
gstswitch->nb_sinkpads);
gstswitch->nb_sinkpads++; gstswitch->nb_sinkpads++;
if (GST_PAD_CAPS (gstswitch->srcpad)) {
gst_pad_try_set_caps (sinkpad, GST_PAD_CAPS (gstswitch->srcpad));
}
return sinkpad; return sinkpad;
} }
static GstFlowReturn
gst_switch_chain (GstPad * pad, GstBuffer * buf)
{
GstSwitch *gstswitch = GST_SWITCH (gst_pad_get_parent (pad));
GstFlowReturn res;
GstPad *active_sinkpad;
GST_OBJECT_LOCK (gstswitch);
active_sinkpad = gstswitch->active_sinkpad;
GST_OBJECT_UNLOCK (gstswitch);
/* Ignore buffers from pads except the selected one */
if (pad != active_sinkpad) {
GST_DEBUG_OBJECT (gstswitch, "Ignoring buffer %p from pad %s:%s",
buf, GST_DEBUG_PAD_NAME (pad));
gst_object_unref (gstswitch);
gst_buffer_unref (buf);
return GST_FLOW_OK;
}
/* check if we need to send a new segment event */
GST_OBJECT_LOCK (gstswitch);
if (gstswitch->need_to_send_newsegment) {
/* retrieve event from hash table */
GstEvent *event =
(GstEvent *) g_hash_table_lookup (gstswitch->newsegment_events, pad);
if (event) {
/* create a copy of this event so we can change start to match
* the start time of this buffer */
gboolean update;
gdouble rate, applied_rate;
GstFormat format;
gint64 start, stop, position;
gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
&format, &start, &stop, &position);
gst_pad_push_event (gstswitch->srcpad,
gst_event_new_new_segment_full (update, rate, applied_rate, format,
GST_BUFFER_TIMESTAMP (buf), stop, position));
gstswitch->need_to_send_newsegment = FALSE;
GST_DEBUG_OBJECT (gstswitch,
"Sending new segment with start of %" G_GINT64_FORMAT,
GST_BUFFER_TIMESTAMP (buf));
}
}
GST_OBJECT_UNLOCK (gstswitch);
/* forward */
GST_DEBUG_OBJECT (gstswitch, "Forwarding buffer %p from pad %s:%s",
buf, GST_DEBUG_PAD_NAME (pad));
res = gst_pad_push (gstswitch->srcpad, buf);
gst_object_unref (gstswitch);
return res;
}
static gboolean static gboolean
gst_switch_poll_sinkpads (GstSwitch * gstswitch) gst_switch_event (GstPad * pad, GstEvent * event)
{ {
GList *pads; GstSwitch *gstswitch = GST_SWITCH (gst_pad_get_parent (pad));
gboolean ret = TRUE;
g_return_val_if_fail (gstswitch != NULL, FALSE); switch (GST_EVENT_TYPE (event)) {
g_return_val_if_fail (GST_IS_SWITCH (gstswitch), FALSE); case GST_EVENT_NEWSEGMENT:
GST_OBJECT_LOCK (gstswitch);
pads = gstswitch->sinkpads; /* need to put in or replace what's in hash table */
g_hash_table_replace (gstswitch->newsegment_events, pad, event);
while (pads) { if (pad == gstswitch->active_sinkpad) {
GstSwitchPad *switchpad = pads->data; /* want to ref event because we have kept it */
gst_event_ref (event);
/* We only pull from usable pads and non EOS pads */ /* need to send it across if we are active pad */
if (GST_PAD_IS_USABLE (switchpad->sinkpad) && !switchpad->eos) { ret = gst_pad_push_event (gstswitch->srcpad, event);
GST_LOG_OBJECT (gstswitch, "polling pad %p", switchpad->sinkpad);
/* We loose the reference to the data we stored */
if (switchpad->data) {
gst_data_unref (switchpad->data);
} }
GST_OBJECT_UNLOCK (gstswitch);
/* If that data was not forwarded we unref it another time to destroy it */
if (!switchpad->forwarded && switchpad->data) {
gst_data_unref (switchpad->data);
}
switchpad->data = NULL;
switchpad->data = gst_pad_pull (switchpad->sinkpad);
if (!switchpad->data) {
GST_LOG_OBJECT (gstswitch,
"received NULL data from pad %p", switchpad->sinkpad);
} else {
gst_data_ref (switchpad->data);
switchpad->forwarded = FALSE;
/* If the buffer is an EOS event we tag the pad as being in EOS. That
means we won't try to pull more data from that pad */
if (GST_IS_EVENT (switchpad->data) &&
(GST_EVENT_TYPE (GST_EVENT (switchpad->data)) == GST_EVENT_EOS)) {
GST_LOG_OBJECT (gstswitch,
"received EOS event on pad %p", switchpad->sinkpad);
switchpad->eos = TRUE;
}
}
} else {
GST_LOG_OBJECT (gstswitch,
"not pulling from pad %s (eos is %d)",
gst_pad_get_name (switchpad->sinkpad), switchpad->eos);
}
pads = g_list_next (pads);
}
return TRUE;
}
static void
gst_switch_loop (GstElement * element)
{
GstSwitch *gstswitch = NULL;
GstSwitchPad *switchpad = NULL;
g_return_if_fail (element != NULL);
g_return_if_fail (GST_IS_SWITCH (element));
gstswitch = GST_SWITCH (element);
/* We poll all our sinkpads */
gst_switch_poll_sinkpads (gstswitch);
/* We get the active sinkpad */
switchpad = g_list_nth_data (gstswitch->sinkpads, gstswitch->active_sinkpad);
if (switchpad && switchpad->data) {
GstData *data = switchpad->data;
/* Loose our reference to that data */
gst_data_unref (switchpad->data);
switchpad->data = NULL;
GST_LOG_OBJECT (gstswitch,
"using data from active pad %p", switchpad->sinkpad);
if (GST_IS_EVENT (data)) {
GstEvent *event = GST_EVENT (data);
GST_LOG_OBJECT (gstswitch,
"handling event from active pad %p", switchpad->sinkpad);
/* Handling event */
gst_pad_event_default (switchpad->sinkpad, event);
} else {
/* Pushing active sinkpad data to srcpad */
GST_LOG_OBJECT (gstswitch,
"pushing data from active pad %p to %p",
switchpad->sinkpad, gstswitch->srcpad);
gst_pad_push (gstswitch->srcpad, data);
}
/* Mark this data as forwarded so that it won't get unrefed on next poll */
switchpad->forwarded = TRUE;
}
}
static GstStateChangeReturn
gst_switch_change_state (GstElement * element, GstStateChange transition)
{
GstSwitch *gstswitch;
gstswitch = GST_SWITCH (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break; break;
case GST_STATE_CHANGE_READY_TO_PAUSED: default:
break; ret = gst_pad_event_default (pad, event);
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
{
GList *sinkpads = NULL;
sinkpads = gstswitch->sinkpads;
while (sinkpads) {
GstSwitchPad *switchpad = sinkpads->data;
/* If a data is still stored in our structure we unref it */
if (switchpad->data) {
gst_data_unref (switchpad->data);
switchpad->data = NULL;
}
switchpad->forwarded = FALSE;
switchpad->eos = FALSE;
sinkpads = g_list_next (sinkpads);
}
}
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break; break;
} }
gst_object_unref (gstswitch);
if (GST_ELEMENT_CLASS (parent_class)->change_state) return ret;
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
else
return GST_STATE_CHANGE_SUCCESS;
} }
/* =========================================== */ /* =========================================== */
@ -316,6 +264,9 @@ gst_switch_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec) const GValue * value, GParamSpec * pspec)
{ {
GstSwitch *gstswitch = NULL; GstSwitch *gstswitch = NULL;
const gchar *pad_name;
GstPad *pad = NULL;
GstPad **active_pad_p;
g_return_if_fail (GST_IS_SWITCH (object)); g_return_if_fail (GST_IS_SWITCH (object));
@ -323,7 +274,27 @@ gst_switch_set_property (GObject * object, guint prop_id,
switch (prop_id) { switch (prop_id) {
case ARG_ACTIVE_SOURCE: case ARG_ACTIVE_SOURCE:
gstswitch->active_sinkpad = g_value_get_int (value); pad_name = g_value_get_string (value);
if (strcmp (pad_name, "") != 0) {
pad = gst_element_get_pad (GST_ELEMENT (object), pad_name);
}
GST_OBJECT_LOCK (object);
if (pad == gstswitch->active_sinkpad) {
GST_OBJECT_UNLOCK (object);
if (pad)
gst_object_unref (pad);
break;
}
active_pad_p = &gstswitch->active_sinkpad;
gst_object_replace ((GstObject **) active_pad_p, GST_OBJECT_CAST (pad));
if (pad)
gst_object_unref (pad);
GST_DEBUG_OBJECT (gstswitch, "New active pad is %" GST_PTR_FORMAT,
gstswitch->active_sinkpad);
gstswitch->need_to_send_newsegment = TRUE;
GST_OBJECT_UNLOCK (object);
break; break;
default: default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -343,10 +314,17 @@ gst_switch_get_property (GObject * object, guint prop_id,
switch (prop_id) { switch (prop_id) {
case ARG_ACTIVE_SOURCE: case ARG_ACTIVE_SOURCE:
g_value_set_int (value, gstswitch->active_sinkpad); GST_OBJECT_LOCK (object);
if (gstswitch->active_sinkpad != NULL) {
g_value_take_string (value,
gst_pad_get_name (gstswitch->active_sinkpad));
} else {
g_value_set_string (value, "");
}
GST_OBJECT_UNLOCK (object);
break; break;
case ARG_NB_SOURCES: case ARG_NB_SOURCES:
g_value_set_int (value, gstswitch->nb_sinkpads); g_value_set_uint (value, gstswitch->nb_sinkpads);
break; break;
default: default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -354,6 +332,105 @@ gst_switch_get_property (GObject * object, guint prop_id,
} }
} }
static GstPad *
gst_switch_get_linked_pad (GstPad * pad, gboolean strict)
{
GstSwitch *gstswitch = GST_SWITCH (gst_pad_get_parent (pad));
GstPad *otherpad = NULL;
if (pad == gstswitch->srcpad)
otherpad = gstswitch->active_sinkpad;
else if (pad == gstswitch->active_sinkpad || !strict)
otherpad = gstswitch->srcpad;
gst_object_unref (gstswitch);
return otherpad;
}
static GstCaps *
gst_switch_getcaps (GstPad * pad)
{
GstPad *otherpad = gst_switch_get_linked_pad (pad, FALSE);
GstObject *parent;
GstCaps *caps;
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 ();
}
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);
caps = gst_pad_peer_get_caps (otherpad);
if (caps == NULL) {
caps = gst_caps_new_any ();
}
return caps;
}
static GstFlowReturn
gst_switch_bufferalloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf)
{
GstSwitch *gstswitch = GST_SWITCH (gst_pad_get_parent (pad));
GstFlowReturn result;
GstPad *active_sinkpad;
GST_OBJECT_LOCK (gstswitch);
active_sinkpad = gstswitch->active_sinkpad;
GST_OBJECT_UNLOCK (gstswitch);
/* Fallback allocation for buffers from pads except the selected one */
if (pad != active_sinkpad) {
GST_DEBUG_OBJECT (gstswitch,
"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 (gstswitch->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 (gstswitch,
"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 (gstswitch);
return result;
}
static GList *
gst_switch_get_linked_pads (GstPad * pad)
{
GstPad *otherpad = gst_switch_get_linked_pad (pad, TRUE);
if (!otherpad)
return NULL;
return g_list_append (NULL, otherpad);
}
/* =========================================== */ /* =========================================== */
/* */ /* */
/* Init & Class init */ /* Init & Class init */
@ -364,33 +441,16 @@ static void
gst_switch_dispose (GObject * object) gst_switch_dispose (GObject * object)
{ {
GstSwitch *gstswitch = NULL; GstSwitch *gstswitch = NULL;
GList *sinkpads = NULL;
gstswitch = GST_SWITCH (object); gstswitch = GST_SWITCH (object);
sinkpads = gstswitch->sinkpads; if (gstswitch->active_sinkpad) {
gst_object_unref (gstswitch->active_sinkpad);
while (sinkpads) { gstswitch->active_sinkpad = NULL;
GstSwitchPad *switchpad = sinkpads->data;
/* If a data is still stored in our structure we unref it */
if (switchpad->data) {
gst_data_unref (switchpad->data);
switchpad->data = NULL;
}
/* Freeing our structure */
g_free (switchpad);
sinkpads = g_list_next (sinkpads);
} }
if (gstswitch->newsegment_events) {
/* Freeing the list correctly */ g_hash_table_destroy (gstswitch->newsegment_events);
if (gstswitch->sinkpads) {
g_list_free (gstswitch->sinkpads);
gstswitch->sinkpads = NULL;
} }
G_OBJECT_CLASS (parent_class)->dispose (object); G_OBJECT_CLASS (parent_class)->dispose (object);
} }
@ -398,16 +458,17 @@ static void
gst_switch_init (GstSwitch * gstswitch) gst_switch_init (GstSwitch * gstswitch)
{ {
gstswitch->srcpad = gst_pad_new ("src", GST_PAD_SRC); gstswitch->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (gstswitch), gstswitch->srcpad); gst_pad_set_internal_link_function (gstswitch->srcpad,
gst_pad_set_link_function (gstswitch->srcpad, GST_DEBUG_FUNCPTR (gst_switch_get_linked_pads));
GST_DEBUG_FUNCPTR (gst_pad_proxy_pad_link));
gst_pad_set_getcaps_function (gstswitch->srcpad, gst_pad_set_getcaps_function (gstswitch->srcpad,
GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps)); GST_DEBUG_FUNCPTR (gst_switch_getcaps));
gst_element_set_loop_function (GST_ELEMENT (gstswitch), gst_switch_loop); gst_element_add_pad (GST_ELEMENT (gstswitch), gstswitch->srcpad);
gstswitch->sinkpads = NULL; gstswitch->active_sinkpad = NULL;
gstswitch->active_sinkpad = 0;
gstswitch->nb_sinkpads = 0; gstswitch->nb_sinkpads = 0;
gstswitch->newsegment_events = g_hash_table_new_full (g_direct_hash,
g_direct_equal, NULL, (GDestroyNotify) gst_mini_object_unref);
gstswitch->need_to_send_newsegment = FALSE;
} }
static void static void
@ -419,6 +480,9 @@ gst_switch_base_init (gpointer g_class)
gst_element_class_add_pad_template (element_class, gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_switch_sink_factory)); gst_static_pad_template_get (&gst_switch_sink_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_switch_src_factory));
} }
static void static void
@ -431,23 +495,22 @@ gst_switch_class_init (GstSwitchClass * klass)
gstelement_class = (GstElementClass *) klass; gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass); parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_switch_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_switch_get_property);
g_object_class_install_property (gobject_class, g_object_class_install_property (gobject_class,
ARG_NB_SOURCES, ARG_NB_SOURCES,
g_param_spec_int ("nb_sources", g_param_spec_uint ("num-sources",
"number of sources", "number of sources",
"number of sources", G_MININT, G_MAXINT, 0, G_PARAM_READABLE)); "number of sources", 0, G_MAXUINT, 0, G_PARAM_READABLE));
g_object_class_install_property (gobject_class, g_object_class_install_property (gobject_class,
ARG_ACTIVE_SOURCE, ARG_ACTIVE_SOURCE,
g_param_spec_int ("active_source", g_param_spec_string ("active-pad",
"active source", "Active Pad",
"active source", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); "Name of the currently active sink pad", NULL, G_PARAM_READWRITE));
gobject_class->dispose = gst_switch_dispose; gobject_class->dispose = gst_switch_dispose;
gobject_class->set_property = gst_switch_set_property;
gobject_class->get_property = gst_switch_get_property;
gstelement_class->change_state = gst_switch_change_state;
gstelement_class->request_new_pad = gst_switch_request_new_pad; gstelement_class->request_new_pad = gst_switch_request_new_pad;
gstelement_class->release_pad = gst_switch_release_pad; gstelement_class->release_pad = gst_switch_release_pad;
} }

20
gst/switch/gstswitch.h
View file

@ -35,26 +35,24 @@ G_BEGIN_DECLS
#define GST_IS_SWITCH_CLASS(klass) \ #define GST_IS_SWITCH_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_SWITCH)) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_SWITCH))
typedef struct _GstSwitchPad GstSwitchPad;
typedef struct _GstSwitch GstSwitch; typedef struct _GstSwitch GstSwitch;
typedef struct _GstSwitchClass GstSwitchClass; typedef struct _GstSwitchClass GstSwitchClass;
struct _GstSwitchPad {
GstPad *sinkpad;
GstData *data;
gboolean forwarded;
gboolean eos;
};
struct _GstSwitch { struct _GstSwitch {
GstElement element; GstElement element;
GList *sinkpads; GstPad *active_sinkpad;
GstPad *srcpad; GstPad *srcpad;
guint nb_sinkpads; guint nb_sinkpads;
guint active_sinkpad; /* this hash table stores for key of the pad pointer
* the last new segment event received for this pad
* so when switching we can send new segment events
*/
GHashTable *newsegment_events;
/* flag to decide whether we need to send a new segment event
* before we receive the next buffer */
gboolean need_to_send_newsegment;
}; };
struct _GstSwitchClass { struct _GstSwitchClass {