gstreamer/gst-libs/gst/rtp/gstbasertpdepayload.c
Tim-Philipp Müller 9a16fb5d49 gst-libs/gst/rtp/gstbasertpdepayload.*: We need to send a newsegment event for each instance, not just for the first ...
Original commit message from CVS:
Reviewed by: Tim-Philipp Müller  <tim at centricular dot net>
* gst-libs/gst/rtp/gstbasertpdepayload.c:
(gst_base_rtp_depayload_init),
(gst_base_rtp_depayload_set_gst_timestamp):
* gst-libs/gst/rtp/gstbasertpdepayload.h:
We need to send a newsegment event for each instance, not
just for the first instance of this class (get rid of
static variable in function). (#321011).
2005-11-08 22:34:24 +00:00

507 lines
14 KiB
C

/* GStreamer
* Copyright (C) <2005> Philippe Khalaf <burger@speedy.org>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "gstbasertpdepayload.h"
GST_DEBUG_CATEGORY (basertpdepayload_debug);
#define GST_CAT_DEFAULT (basertpdepayload_debug)
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_QUEUE_DELAY,
};
static GstElementClass *parent_class = NULL;
static void gst_base_rtp_depayload_base_init (GstBaseRTPDepayloadClass * klass);
static void gst_base_rtp_depayload_class_init (GstBaseRTPDepayloadClass *
klass);
static void gst_base_rtp_depayload_init (GstBaseRTPDepayload * filter,
gpointer g_class);
static void gst_base_rtp_depayload_push (GstBaseRTPDepayload * filter,
GstBuffer * rtp_buf);
GType
gst_base_rtp_depayload_get_type (void)
{
static GType plugin_type = 0;
if (!plugin_type) {
static const GTypeInfo plugin_info = {
sizeof (GstBaseRTPDepayloadClass),
(GBaseInitFunc) gst_base_rtp_depayload_base_init,
NULL,
(GClassInitFunc) gst_base_rtp_depayload_class_init,
NULL,
NULL,
sizeof (GstBaseRTPDepayload),
0,
(GInstanceInitFunc) gst_base_rtp_depayload_init,
};
plugin_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstBaseRTPDepayload", &plugin_info, 0);
}
return plugin_type;
}
static void gst_base_rtp_depayload_finalize (GObject * object);
static void gst_base_rtp_depayload_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_base_rtp_depayload_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static gboolean gst_base_rtp_depayload_setcaps (GstPad * pad, GstCaps * caps);
static GstFlowReturn gst_base_rtp_depayload_chain (GstPad * pad,
GstBuffer * in);
static void gst_base_rtp_depayload_set_clock (GstElement * element,
GstClock * clock);
static GstStateChangeReturn gst_base_rtp_depayload_change_state (GstElement *
element, GstStateChange transition);
static GstFlowReturn gst_base_rtp_depayload_add_to_queue (GstBaseRTPDepayload *
filter, GstBuffer * in);
static void gst_base_rtp_depayload_set_gst_timestamp
(GstBaseRTPDepayload * filter, guint32 timestamp, GstBuffer * buf);
static void
gst_base_rtp_depayload_wait (GstBaseRTPDepayload * filter, GstClockTime time);
static void
gst_base_rtp_depayload_base_init (GstBaseRTPDepayloadClass * klass)
{
/*GstElementClass *element_class = GST_ELEMENT_CLASS (klass); */
}
static void
gst_base_rtp_depayload_class_init (GstBaseRTPDepayloadClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = G_OBJECT_CLASS (klass);
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_base_rtp_depayload_set_property;
gobject_class->get_property = gst_base_rtp_depayload_get_property;
g_object_class_install_property (gobject_class, ARG_QUEUE_DELAY,
g_param_spec_uint ("queue_delay", "Queue Delay",
"Amount of ms to queue/buffer", 0, G_MAXUINT, 0, G_PARAM_READWRITE));
gobject_class->finalize = gst_base_rtp_depayload_finalize;
gstelement_class->set_clock =
GST_DEBUG_FUNCPTR (gst_base_rtp_depayload_set_clock);
gstelement_class->change_state = gst_base_rtp_depayload_change_state;
klass->add_to_queue = gst_base_rtp_depayload_add_to_queue;
klass->set_gst_timestamp = gst_base_rtp_depayload_set_gst_timestamp;
GST_DEBUG_CATEGORY_INIT (basertpdepayload_debug, "basertpdepayload", 0,
"Base class for RTP Depayloaders");
}
static void
gst_base_rtp_depayload_init (GstBaseRTPDepayload * filter, gpointer g_class)
{
GstPadTemplate *pad_template;
GST_DEBUG_OBJECT (filter, "init");
pad_template =
gst_element_class_get_pad_template (GST_ELEMENT_CLASS (g_class), "sink");
g_return_if_fail (pad_template != NULL);
filter->sinkpad = gst_pad_new_from_template (pad_template, "sink");
gst_pad_set_setcaps_function (filter->sinkpad,
gst_base_rtp_depayload_setcaps);
gst_pad_set_chain_function (filter->sinkpad, gst_base_rtp_depayload_chain);
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
pad_template =
gst_element_class_get_pad_template (GST_ELEMENT_CLASS (g_class), "src");
g_return_if_fail (pad_template != NULL);
filter->srcpad = gst_pad_new_from_template (pad_template, "src");
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
filter->queue = g_queue_new ();
filter->queue_delay = RTP_QUEUE_DELAY;
filter->need_newsegment = TRUE;
/* this one needs to be overwritten by child */
filter->clock_rate = 0;
filter->clock = NULL;
}
static void
gst_base_rtp_depayload_finalize (GObject * object)
{
g_queue_free (GST_BASE_RTP_DEPAYLOAD (object)->queue);
if (G_OBJECT_CLASS (parent_class)->finalize)
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_base_rtp_depayload_setcaps (GstPad * pad, GstCaps * caps)
{
GstBaseRTPDepayload *filter;
filter = GST_BASE_RTP_DEPAYLOAD (gst_pad_get_parent (pad));
g_return_val_if_fail (filter != NULL, FALSE);
g_return_val_if_fail (GST_IS_BASE_RTP_DEPAYLOAD (filter), FALSE);
GstBaseRTPDepayloadClass *bclass = GST_BASE_RTP_DEPAYLOAD_GET_CLASS (filter);
if (bclass->set_caps)
return bclass->set_caps (filter, caps);
else
return TRUE;
}
static GstFlowReturn
gst_base_rtp_depayload_chain (GstPad * pad, GstBuffer * in)
{
GstBaseRTPDepayload *filter;
GstBaseRTPDepayloadClass *bclass;
GstFlowReturn ret = GST_FLOW_OK;
filter = GST_BASE_RTP_DEPAYLOAD (GST_OBJECT_PARENT (pad));
g_return_val_if_fail (filter->clock_rate > 0, GST_FLOW_ERROR);
bclass = GST_BASE_RTP_DEPAYLOAD_GET_CLASS (filter);
if (filter->queue_delay == 0) {
GST_DEBUG_OBJECT (filter, "Pushing directly!");
gst_base_rtp_depayload_push (filter, in);
} else {
if (bclass->add_to_queue)
ret = bclass->add_to_queue (filter, in);
}
return ret;
}
static GstFlowReturn
gst_base_rtp_depayload_add_to_queue (GstBaseRTPDepayload * filter,
GstBuffer * in)
{
GQueue *queue = filter->queue;
/* our first packet, just push it */
QUEUE_LOCK (filter);
if (g_queue_is_empty (queue)) {
g_queue_push_tail (queue, in);
QUEUE_UNLOCK (filter);
} else {
guint16 seqnum, queueseq;
guint32 timestamp;
seqnum = gst_rtpbuffer_get_seq (in);
queueseq = gst_rtpbuffer_get_seq (GST_BUFFER (g_queue_peek_head (queue)));
/* look for right place to insert it */
int i = 0;
while (seqnum > queueseq) {
gpointer data;
i++;
data = g_queue_peek_nth (queue, i);
if (!data)
break;
queueseq = gst_rtpbuffer_get_seq (GST_BUFFER (data));
}
/* now insert it at that place */
g_queue_push_nth (queue, in, i);
QUEUE_UNLOCK (filter);
timestamp = gst_rtpbuffer_get_timestamp (in);
GST_DEBUG_OBJECT (filter,
"Packet added to queue %d at pos %d timestamp %u sn %d",
g_queue_get_length (queue), i, timestamp, seqnum);
}
return GST_FLOW_OK;
}
static void
gst_base_rtp_depayload_push (GstBaseRTPDepayload * filter, GstBuffer * rtp_buf)
{
GstBaseRTPDepayloadClass *bclass = GST_BASE_RTP_DEPAYLOAD_GET_CLASS (filter);
GstBuffer *out_buf;
GstCaps *srccaps;
/* let's send it out to processing */
out_buf = bclass->process (filter, rtp_buf);
if (out_buf) {
/* set the caps */
srccaps = GST_PAD_CAPS (filter->srcpad);
if (srccaps)
gst_buffer_set_caps (GST_BUFFER (out_buf), srccaps);
/* set the timestamp
* I am assuming here that the timestamp of the last RTP buffer
* is the same as the timestamp wanted on the collector
* maybe i should add a way to override this timestamp from the
* depayloader child class
*/
bclass->set_gst_timestamp (filter, gst_rtpbuffer_get_timestamp (rtp_buf),
out_buf);
/* push it */
GST_DEBUG_OBJECT (filter, "Pushing buffer size %d, timestamp %u",
GST_BUFFER_SIZE (out_buf), GST_BUFFER_TIMESTAMP (out_buf));
gst_pad_push (filter->srcpad, GST_BUFFER (out_buf));
gst_buffer_unref (rtp_buf);
GST_DEBUG_OBJECT (filter, "Pushed buffer");
}
}
static void
gst_base_rtp_depayload_set_gst_timestamp (GstBaseRTPDepayload * filter,
guint32 timestamp, GstBuffer * buf)
{
guint64 ts = ((timestamp * GST_SECOND) / filter->clock_rate);
/* rtp timestamps are based on the clock_rate
* gst timesamps are in nanoseconds
*/
GST_DEBUG_OBJECT (filter, "calculating ts : timestamp : %u, clockrate : %u",
timestamp, filter->clock_rate);
GST_BUFFER_TIMESTAMP (buf) = ts;
GST_DEBUG_OBJECT (filter, "calculated ts %"
GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
/* if this is the first buf send a discont */
if (filter->need_newsegment) {
/* send discont */
GstEvent *event = gst_event_new_newsegment (FALSE, 1.0, GST_FORMAT_TIME,
GST_BUFFER_TIMESTAMP (buf), GST_CLOCK_TIME_NONE, 0);
gst_pad_push_event (filter->srcpad, event);
filter->need_newsegment = FALSE;
GST_DEBUG_OBJECT (filter, "Pushed newsegment event on this first buffer");
}
/* add delay to timestamp */
GST_BUFFER_TIMESTAMP (buf) =
GST_BUFFER_TIMESTAMP (buf) + (filter->queue_delay * GST_MSECOND);
}
static void
gst_base_rtp_depayload_queue_release (GstBaseRTPDepayload * filter)
{
GQueue *queue = filter->queue;
guint32 headts, tailts;
GstBaseRTPDepayloadClass *bclass;
if (g_queue_is_empty (queue))
return;
/* if our queue is getting to big (more than RTP_QUEUEDELAY ms of data)
* release heading buffers
*/
GST_DEBUG_OBJECT (filter, "clockrate %d, queue_delay %d", filter->clock_rate,
filter->queue_delay);
gfloat q_size_secs = (gfloat) filter->queue_delay / 1000;
guint maxtsunits = (gfloat) filter->clock_rate * q_size_secs;
QUEUE_LOCK (filter);
headts = gst_rtpbuffer_get_timestamp (GST_BUFFER (g_queue_peek_head (queue)));
tailts = gst_rtpbuffer_get_timestamp (GST_BUFFER (g_queue_peek_tail (queue)));
bclass = GST_BASE_RTP_DEPAYLOAD_GET_CLASS (filter);
/*GST_DEBUG("maxtsunit is %u %u %u %u", maxtsunits, headts, tailts, headts - tailts); */
while (headts - tailts > maxtsunits) {
GST_DEBUG_OBJECT (filter, "Poping packet from queue");
if (bclass->process) {
GstBuffer *in = g_queue_pop_head (queue);
gst_base_rtp_depayload_push (filter, in);
}
headts =
gst_rtpbuffer_get_timestamp (GST_BUFFER (g_queue_peek_head (queue)));
}
QUEUE_UNLOCK (filter);
}
static gpointer
gst_base_rtp_depayload_thread (GstBaseRTPDepayload * filter)
{
while (filter->thread_running) {
gst_base_rtp_depayload_queue_release (filter);
/* i want to run this thread clock_rate times per second */
gst_base_rtp_depayload_wait (filter, GST_NSECOND / filter->clock_rate);
}
return NULL;
}
static gboolean
gst_base_rtp_depayload_start_thread (GstBaseRTPDepayload * filter)
{
GST_DEBUG_OBJECT (filter, "Starting queue release thread");
filter->thread_running = TRUE;
filter->thread = g_thread_create ((GThreadFunc) gst_base_rtp_depayload_thread,
filter, TRUE, NULL);
GST_DEBUG_OBJECT (filter, "Started queue release thread");
return TRUE;
}
static gboolean
gst_base_rtp_depayload_stop_thread (GstBaseRTPDepayload * filter)
{
filter->thread_running = FALSE;
if (filter->thread) {
g_thread_join (filter->thread);
filter->thread = NULL;
}
QUEUE_LOCK_FREE (filter);
return TRUE;
}
static void
gst_base_rtp_depayload_wait (GstBaseRTPDepayload * filter, GstClockTime time)
{
GstClockID id;
g_return_if_fail (GST_CLOCK_TIME_IS_VALID (time));
if (filter->clock == NULL) {
GST_DEBUG_OBJECT (filter, "No clock given yet");
return;
}
id = gst_clock_new_single_shot_id (filter->clock, time);
gst_clock_id_wait (id, NULL);
gst_clock_id_unref (id);
}
static void
gst_base_rtp_depayload_set_clock (GstElement * element, GstClock * clock)
{
GstBaseRTPDepayload *sink;
sink = GST_BASE_RTP_DEPAYLOAD (element);
sink->clock = clock;
}
static GstStateChangeReturn
gst_base_rtp_depayload_change_state (GstElement * element,
GstStateChange transition)
{
GstBaseRTPDepayload *filter;
g_return_val_if_fail (GST_IS_BASE_RTP_DEPAYLOAD (element),
GST_STATE_CHANGE_FAILURE);
filter = GST_BASE_RTP_DEPAYLOAD (element);
/* we disallow changing the state from the thread */
if (g_thread_self () == filter->thread)
return GST_STATE_CHANGE_FAILURE;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_base_rtp_depayload_start_thread (filter))
goto start_failed;
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
default:
break;
}
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_NULL:
gst_base_rtp_depayload_stop_thread (filter);
break;
default:
break;
}
return GST_STATE_CHANGE_SUCCESS;
/* ERRORS */
start_failed:
{
return GST_STATE_CHANGE_FAILURE;
}
}
static void
gst_base_rtp_depayload_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstBaseRTPDepayload *filter;
g_return_if_fail (GST_IS_BASE_RTP_DEPAYLOAD (object));
filter = GST_BASE_RTP_DEPAYLOAD (object);
switch (prop_id) {
case ARG_QUEUE_DELAY:
filter->queue_delay = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_base_rtp_depayload_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstBaseRTPDepayload *filter;
g_return_if_fail (GST_IS_BASE_RTP_DEPAYLOAD (object));
filter = GST_BASE_RTP_DEPAYLOAD (object);
switch (prop_id) {
case ARG_QUEUE_DELAY:
g_value_set_uint (value, filter->queue_delay);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}