mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-17 05:46:36 +00:00
891be51105
Split plugin into features including dynamic types which can be indiviually registered during a static build. More details here: https://gitlab.freedesktop.org/gstreamer/gst-build/-/merge_requests/199 https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/661 Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2110>
680 lines
20 KiB
C
680 lines
20 KiB
C
/*
|
|
* gstrtponviftimestamp.h
|
|
*
|
|
* Copyright (C) 2014 Axis Communications AB
|
|
* Author: Guillaume Desmottes <guillaume.desmottes@collabora.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <gst/rtp/gstrtpbuffer.h>
|
|
|
|
#include "gstrtponviftimestamp.h"
|
|
|
|
#define GST_NTP_OFFSET_EVENT_NAME "GstNtpOffset"
|
|
|
|
#define DEFAULT_NTP_OFFSET GST_CLOCK_TIME_NONE
|
|
#define DEFAULT_CSEQ 0
|
|
#define DEFAULT_SET_E_BIT FALSE
|
|
#define DEFAULT_SET_T_BIT FALSE
|
|
#define DEFAULT_DROP_OUT_OF_SEGMENT TRUE
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (rtponviftimestamp_debug);
|
|
#define GST_CAT_DEFAULT (rtponviftimestamp_debug)
|
|
|
|
static GstFlowReturn gst_rtp_onvif_timestamp_chain (GstPad * pad,
|
|
GstObject * parent, GstBuffer * buf);
|
|
static GstFlowReturn gst_rtp_onvif_timestamp_chain_list (GstPad * pad,
|
|
GstObject * parent, GstBufferList * list);
|
|
|
|
static GstFlowReturn handle_and_push_buffer (GstRtpOnvifTimestamp * self,
|
|
GstBuffer * buf);
|
|
static GstFlowReturn handle_and_push_buffer_list (GstRtpOnvifTimestamp * self,
|
|
GstBufferList * list);
|
|
|
|
static GstStaticPadTemplate sink_template_factory =
|
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("application/x-rtp")
|
|
);
|
|
|
|
static GstStaticPadTemplate src_template_factory =
|
|
GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("application/x-rtp")
|
|
);
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_NTP_OFFSET,
|
|
PROP_CSEQ,
|
|
PROP_SET_E_BIT,
|
|
PROP_SET_T_BIT,
|
|
PROP_DROP_OUT_OF_SEGMENT
|
|
};
|
|
|
|
/*static guint gst_rtp_onvif_timestamp_signals[LAST_SIGNAL] = { 0 }; */
|
|
|
|
G_DEFINE_TYPE (GstRtpOnvifTimestamp, gst_rtp_onvif_timestamp, GST_TYPE_ELEMENT);
|
|
GST_ELEMENT_REGISTER_DEFINE (rtponviftimestamp, "rtponviftimestamp",
|
|
GST_RANK_NONE, GST_TYPE_RTP_ONVIF_TIMESTAMP);
|
|
|
|
static void
|
|
gst_rtp_onvif_timestamp_get_property (GObject * object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstRtpOnvifTimestamp *self = GST_RTP_ONVIF_TIMESTAMP (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_NTP_OFFSET:
|
|
g_value_set_uint64 (value, self->prop_ntp_offset);
|
|
break;
|
|
case PROP_CSEQ:
|
|
g_value_set_uint (value, self->prop_cseq);
|
|
break;
|
|
case PROP_SET_E_BIT:
|
|
g_value_set_boolean (value, self->prop_set_e_bit);
|
|
break;
|
|
case PROP_SET_T_BIT:
|
|
g_value_set_boolean (value, self->prop_set_t_bit);
|
|
break;
|
|
case PROP_DROP_OUT_OF_SEGMENT:
|
|
g_value_set_boolean (value, self->prop_drop_out_of_segment);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_rtp_onvif_timestamp_set_property (GObject * object,
|
|
guint prop_id, const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstRtpOnvifTimestamp *self = GST_RTP_ONVIF_TIMESTAMP (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_NTP_OFFSET:
|
|
self->prop_ntp_offset = g_value_get_uint64 (value);
|
|
break;
|
|
case PROP_CSEQ:
|
|
self->prop_cseq = g_value_get_uint (value);
|
|
break;
|
|
case PROP_SET_E_BIT:
|
|
self->prop_set_e_bit = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_SET_T_BIT:
|
|
self->prop_set_t_bit = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_DROP_OUT_OF_SEGMENT:
|
|
self->prop_drop_out_of_segment = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* send cached buffer or list, and events, if present */
|
|
static GstFlowReturn
|
|
send_cached_buffer_and_events (GstRtpOnvifTimestamp * self)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
g_assert (!(self->buffer && self->list));
|
|
|
|
if (self->buffer) {
|
|
GST_DEBUG_OBJECT (self, "pushing %" GST_PTR_FORMAT, self->buffer);
|
|
ret = handle_and_push_buffer (self, self->buffer);
|
|
self->buffer = NULL;
|
|
}
|
|
if (self->list) {
|
|
GST_DEBUG_OBJECT (self, "pushing %" GST_PTR_FORMAT, self->list);
|
|
ret = handle_and_push_buffer_list (self, self->list);
|
|
self->list = NULL;
|
|
}
|
|
|
|
if (ret != GST_FLOW_OK)
|
|
goto out;
|
|
|
|
while (!g_queue_is_empty (self->event_queue)) {
|
|
GstEvent *event;
|
|
|
|
event = GST_EVENT_CAST (g_queue_pop_head (self->event_queue));
|
|
GST_LOG_OBJECT (self->sinkpad, "sending %" GST_PTR_FORMAT, event);
|
|
(void) gst_pad_send_event (self->sinkpad, event);
|
|
}
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
purge_cached_buffer_and_events (GstRtpOnvifTimestamp * self)
|
|
{
|
|
g_assert (!(self->buffer && self->list));
|
|
|
|
if (self->buffer) {
|
|
GST_DEBUG_OBJECT (self, "purging %" GST_PTR_FORMAT, self->buffer);
|
|
gst_buffer_unref (self->buffer);
|
|
self->buffer = NULL;
|
|
}
|
|
if (self->list) {
|
|
GST_DEBUG_OBJECT (self, "purging %" GST_PTR_FORMAT, self->list);
|
|
gst_buffer_list_unref (self->list);
|
|
self->list = NULL;
|
|
}
|
|
|
|
while (!g_queue_is_empty (self->event_queue)) {
|
|
GstEvent *event;
|
|
|
|
event = GST_EVENT_CAST (g_queue_pop_head (self->event_queue));
|
|
gst_event_unref (event);
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_rtp_onvif_timestamp_change_state (GstElement * element,
|
|
GstStateChange transition)
|
|
{
|
|
GstRtpOnvifTimestamp *self = GST_RTP_ONVIF_TIMESTAMP (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
self->ntp_offset = self->prop_ntp_offset;
|
|
GST_DEBUG_OBJECT (self, "ntp-offset: %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (self->ntp_offset));
|
|
self->set_d_bit = TRUE;
|
|
self->set_e_bit = FALSE;
|
|
self->set_t_bit = FALSE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (gst_rtp_onvif_timestamp_parent_class)->change_state
|
|
(element, transition);
|
|
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
purge_cached_buffer_and_events (self);
|
|
gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_rtp_onvif_timestamp_finalize (GObject * object)
|
|
{
|
|
GstRtpOnvifTimestamp *self = GST_RTP_ONVIF_TIMESTAMP (object);
|
|
|
|
g_queue_free (self->event_queue);
|
|
|
|
G_OBJECT_CLASS (gst_rtp_onvif_timestamp_parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_rtp_onvif_timestamp_class_init (GstRtpOnvifTimestampClass * klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
GstElementClass *gstelement_class;
|
|
|
|
gobject_class = G_OBJECT_CLASS (klass);
|
|
gstelement_class = GST_ELEMENT_CLASS (klass);
|
|
|
|
gobject_class->get_property = gst_rtp_onvif_timestamp_get_property;
|
|
gobject_class->set_property = gst_rtp_onvif_timestamp_set_property;
|
|
gobject_class->finalize = gst_rtp_onvif_timestamp_finalize;
|
|
|
|
g_object_class_install_property (gobject_class, PROP_NTP_OFFSET,
|
|
g_param_spec_uint64 ("ntp-offset", "NTP offset",
|
|
"Offset between the pipeline running time and the absolute UTC time, "
|
|
"in nano-seconds since 1900 (-1 for automatic computation)",
|
|
0, G_MAXUINT64,
|
|
DEFAULT_NTP_OFFSET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_CSEQ,
|
|
g_param_spec_uint ("cseq", "CSeq",
|
|
"The RTSP CSeq which initiated the playback",
|
|
0, G_MAXUINT32,
|
|
DEFAULT_CSEQ, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_SET_E_BIT,
|
|
g_param_spec_boolean ("set-e-bit", "Set 'E' bit",
|
|
"If the element should set the 'E' bit as defined in the ONVIF RTP "
|
|
"extension. This increases latency by one packet",
|
|
DEFAULT_SET_E_BIT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_SET_T_BIT,
|
|
g_param_spec_boolean ("set-t-bit", "Set 'T' bit",
|
|
"If the element should set the 'T' bit as defined in the ONVIF RTP "
|
|
"extension. This increases latency by one packet",
|
|
DEFAULT_SET_T_BIT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_DROP_OUT_OF_SEGMENT,
|
|
g_param_spec_boolean ("drop-out-of-segment", "Drop out of segment",
|
|
"Whether the element should drop buffers that fall outside the segment, "
|
|
"not part of the specification but allows full reverse playback.",
|
|
DEFAULT_DROP_OUT_OF_SEGMENT,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/* register pads */
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&sink_template_factory);
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&src_template_factory);
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class,
|
|
"ONVIF NTP timestamps RTP extension", "Effect/RTP",
|
|
"Add absolute timestamps and flags of recorded data in a playback "
|
|
"session", "Guillaume Desmottes <guillaume.desmottes@collabora.com>");
|
|
|
|
gstelement_class->change_state =
|
|
GST_DEBUG_FUNCPTR (gst_rtp_onvif_timestamp_change_state);
|
|
|
|
GST_DEBUG_CATEGORY_INIT (rtponviftimestamp_debug, "rtponviftimestamp",
|
|
0, "ONVIF NTP timestamps RTP extension");
|
|
}
|
|
|
|
static gboolean
|
|
parse_event_ntp_offset (GstRtpOnvifTimestamp * self, GstEvent * event,
|
|
GstClockTime * offset, gboolean * discont)
|
|
{
|
|
const GstStructure *structure = gst_event_get_structure (event);
|
|
GstClockTime event_offset;
|
|
gboolean event_discont;
|
|
|
|
if (!gst_structure_get_clock_time (structure, "ntp-offset", &event_offset)) {
|
|
GST_ERROR_OBJECT (self, "no ntp-offset in %" GST_PTR_FORMAT, event);
|
|
return FALSE;
|
|
}
|
|
if (!gst_structure_get_boolean (structure, "discont", &event_discont)) {
|
|
GST_ERROR_OBJECT (self, "no discontinue in %" GST_PTR_FORMAT, event);
|
|
return FALSE;
|
|
}
|
|
|
|
if (offset)
|
|
*offset = event_offset;
|
|
|
|
if (discont)
|
|
*discont = event_discont;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_rtp_onvif_timestamp_sink_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
GstRtpOnvifTimestamp *self = GST_RTP_ONVIF_TIMESTAMP (parent);
|
|
gboolean drop = FALSE;
|
|
gboolean ret = TRUE;
|
|
|
|
GST_DEBUG_OBJECT (pad, "handling event %s", GST_EVENT_TYPE_NAME (event));
|
|
|
|
/* handle serialized events, which, should not be enqueued */
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CUSTOM_DOWNSTREAM:
|
|
/* if the "set-e-bit" property is set, an offset event might mark the
|
|
* stream as discontinued. We need to check if the currently cached buffer
|
|
* needs the e-bit before it's pushed */
|
|
if (self->buffer != NULL && self->prop_set_e_bit &&
|
|
gst_event_has_name (event, GST_NTP_OFFSET_EVENT_NAME)) {
|
|
gboolean discont;
|
|
if (parse_event_ntp_offset (self, event, NULL, &discont)) {
|
|
GST_DEBUG_OBJECT (self, "stream %s discontinued",
|
|
(discont ? "is" : "is not"));
|
|
self->set_e_bit = discont;
|
|
} else {
|
|
drop = TRUE;
|
|
ret = FALSE;
|
|
goto out;
|
|
}
|
|
}
|
|
break;
|
|
case GST_EVENT_EOS:
|
|
{
|
|
GstFlowReturn res;
|
|
|
|
/* Push pending buffers, if any */
|
|
self->set_e_bit = TRUE;
|
|
if (self->prop_set_t_bit)
|
|
self->set_t_bit = TRUE;
|
|
res = send_cached_buffer_and_events (self);
|
|
if (res != GST_FLOW_OK) {
|
|
drop = TRUE;
|
|
ret = FALSE;
|
|
goto out;
|
|
}
|
|
break;
|
|
}
|
|
case GST_EVENT_FLUSH_STOP:
|
|
purge_cached_buffer_and_events (self);
|
|
self->set_d_bit = TRUE;
|
|
self->set_e_bit = FALSE;
|
|
self->set_t_bit = FALSE;
|
|
gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* enqueue serialized events if there is a cached buffer */
|
|
if (GST_EVENT_IS_SERIALIZED (event) && (self->buffer || self->list)) {
|
|
GST_DEBUG ("enqueueing serialized event");
|
|
g_queue_push_tail (self->event_queue, event);
|
|
event = NULL;
|
|
goto out;
|
|
}
|
|
|
|
/* handle rest of the events */
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CUSTOM_DOWNSTREAM:
|
|
/* update the ntp-offset after any cached buffer/buffer list has been
|
|
* pushed. the d-bit of the next buffer/buffer list should be set if
|
|
* the stream is discontinued */
|
|
if (gst_event_has_name (event, GST_NTP_OFFSET_EVENT_NAME)) {
|
|
GstClockTime offset;
|
|
gboolean discont;
|
|
if (parse_event_ntp_offset (self, event, &offset, &discont)) {
|
|
GST_DEBUG_OBJECT (self, "new ntp-offset: %" GST_TIME_FORMAT
|
|
", stream %s discontinued", GST_TIME_ARGS (offset),
|
|
(discont ? "is" : "is not"));
|
|
self->ntp_offset = offset;
|
|
self->set_d_bit = discont;
|
|
} else {
|
|
ret = FALSE;
|
|
}
|
|
drop = TRUE;
|
|
}
|
|
break;
|
|
case GST_EVENT_SEGMENT:
|
|
gst_event_copy_segment (event, &self->segment);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
out:
|
|
if (drop)
|
|
gst_event_unref (event);
|
|
else if (event)
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_rtp_onvif_timestamp_init (GstRtpOnvifTimestamp * self)
|
|
{
|
|
self->sinkpad =
|
|
gst_pad_new_from_static_template (&sink_template_factory, "sink");
|
|
gst_pad_set_chain_function (self->sinkpad, gst_rtp_onvif_timestamp_chain);
|
|
gst_pad_set_chain_list_function (self->sinkpad,
|
|
gst_rtp_onvif_timestamp_chain_list);
|
|
gst_pad_set_event_function (self->sinkpad,
|
|
gst_rtp_onvif_timestamp_sink_event);
|
|
gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
|
|
GST_PAD_SET_PROXY_CAPS (self->sinkpad);
|
|
GST_PAD_SET_PROXY_ALLOCATION (self->sinkpad);
|
|
|
|
self->srcpad =
|
|
gst_pad_new_from_static_template (&src_template_factory, "src");
|
|
gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
|
|
|
|
self->prop_ntp_offset = DEFAULT_NTP_OFFSET;
|
|
self->prop_set_e_bit = DEFAULT_SET_E_BIT;
|
|
self->prop_set_t_bit = DEFAULT_SET_T_BIT;
|
|
self->prop_drop_out_of_segment = DEFAULT_DROP_OUT_OF_SEGMENT;
|
|
|
|
gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
|
|
|
|
self->event_queue = g_queue_new ();
|
|
self->buffer = NULL;
|
|
self->list = NULL;
|
|
}
|
|
|
|
#define EXTENSION_ID 0xABAC
|
|
#define EXTENSION_SIZE 3
|
|
|
|
static gboolean
|
|
handle_buffer (GstRtpOnvifTimestamp * self, GstBuffer * buf)
|
|
{
|
|
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
|
|
guint8 *data;
|
|
guint16 bits;
|
|
guint wordlen;
|
|
guint64 time;
|
|
guint8 field = 0;
|
|
|
|
if (!GST_CLOCK_TIME_IS_VALID (self->ntp_offset)) {
|
|
GstClock *clock = gst_element_get_clock (GST_ELEMENT (self));
|
|
|
|
if (clock) {
|
|
GstClockTime clock_time = gst_clock_get_time (clock);
|
|
guint64 real_time = g_get_real_time ();
|
|
GstClockTime running_time = clock_time -
|
|
gst_element_get_base_time (GST_ELEMENT (self));
|
|
|
|
/* convert microseconds to nanoseconds */
|
|
real_time *= 1000;
|
|
|
|
/* add constant to convert from 1970 based time to 1900 based time */
|
|
real_time += (G_GUINT64_CONSTANT (2208988800) * GST_SECOND);
|
|
|
|
self->ntp_offset = real_time - running_time;
|
|
|
|
GST_DEBUG_OBJECT (self, "new ntp-offset: %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (self->ntp_offset));
|
|
|
|
gst_object_unref (clock);
|
|
} else {
|
|
GST_ELEMENT_ERROR (self, STREAM, FAILED, ("No ntp-offset present"),
|
|
("Can not guess ntp-offset with no clock."));
|
|
/* Received a buffer in PAUSED, so we can't guess the match
|
|
* between the running time and the NTP clock yet.
|
|
*/
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
if (self->segment.format != GST_FORMAT_TIME) {
|
|
GST_ELEMENT_ERROR (self, STREAM, FAILED,
|
|
("did not receive a time segment yet"), (NULL));
|
|
return FALSE;
|
|
}
|
|
|
|
if (!gst_rtp_buffer_map (buf, GST_MAP_READWRITE, &rtp)) {
|
|
GST_ELEMENT_ERROR (self, STREAM, FAILED,
|
|
("Failed to map RTP buffer"), (NULL));
|
|
return FALSE;
|
|
}
|
|
|
|
if (!gst_rtp_buffer_set_extension_data (&rtp, EXTENSION_ID, EXTENSION_SIZE)) {
|
|
GST_ELEMENT_ERROR (self, STREAM, FAILED, ("Failed to set extension data"),
|
|
(NULL));
|
|
gst_rtp_buffer_unmap (&rtp);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!gst_rtp_buffer_get_extension_data (&rtp, &bits, (gpointer) & data,
|
|
&wordlen)) {
|
|
GST_ELEMENT_ERROR (self, STREAM, FAILED, ("Failed to get extension data"),
|
|
(NULL));
|
|
gst_rtp_buffer_unmap (&rtp);
|
|
return FALSE;
|
|
}
|
|
|
|
/* NTP timestamp */
|
|
if (GST_BUFFER_PTS_IS_VALID (buf)) {
|
|
time = gst_segment_to_stream_time (&self->segment, GST_FORMAT_TIME,
|
|
GST_BUFFER_PTS (buf));
|
|
} else if (GST_BUFFER_DTS_IS_VALID (buf)) {
|
|
time = gst_segment_to_stream_time (&self->segment, GST_FORMAT_TIME,
|
|
GST_BUFFER_DTS (buf));
|
|
} else {
|
|
GST_INFO_OBJECT (self,
|
|
"Buffer doesn't contain any valid DTS or PTS timestamp");
|
|
goto done;
|
|
}
|
|
|
|
if (self->prop_drop_out_of_segment && time == GST_CLOCK_TIME_NONE) {
|
|
GST_ERROR_OBJECT (self, "Failed to get stream time");
|
|
gst_rtp_buffer_unmap (&rtp);
|
|
return FALSE;
|
|
}
|
|
|
|
/* add the offset (in seconds) */
|
|
if (time != GST_CLOCK_TIME_NONE) {
|
|
time += self->ntp_offset;
|
|
/* convert to NTP time. upper 32 bits should contain the seconds
|
|
* and the lower 32 bits, the fractions of a second. */
|
|
time = gst_util_uint64_scale (time, (G_GINT64_CONSTANT (1) << 32),
|
|
GST_SECOND);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (self, "timestamp: %" G_GUINT64_FORMAT, time);
|
|
|
|
GST_WRITE_UINT64_BE (data, time);
|
|
|
|
/* The next byte is composed of: C E D T mbz (4 bits) */
|
|
|
|
/* Set C if the buffer does *not* have the DELTA_UNIT flag as it means
|
|
* that's a key frame (or 'clean point'). */
|
|
if (!GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT)) {
|
|
GST_DEBUG_OBJECT (self, "set C flag");
|
|
field |= (1 << 7);
|
|
}
|
|
|
|
/* Set E if this the last buffer of a contiguous section of recording */
|
|
if (self->set_e_bit) {
|
|
GST_DEBUG_OBJECT (self, "set E flag");
|
|
field |= (1 << 6);
|
|
self->set_e_bit = FALSE;
|
|
}
|
|
|
|
/* Set D if the buffer has the DISCONT flag */
|
|
if (self->set_d_bit || GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT)) {
|
|
GST_DEBUG_OBJECT (self, "set D flag");
|
|
field |= (1 << 5);
|
|
self->set_d_bit = FALSE;
|
|
}
|
|
|
|
/* Set T if we have received EOS */
|
|
if (self->set_t_bit) {
|
|
GST_DEBUG_OBJECT (self, "set T flag");
|
|
field |= (1 << 4);
|
|
self->set_t_bit = FALSE;
|
|
}
|
|
|
|
GST_WRITE_UINT8 (data + 8, field);
|
|
|
|
/* CSeq (low-order byte) */
|
|
GST_WRITE_UINT8 (data + 9, (guchar) self->prop_cseq);
|
|
|
|
memset (data + 10, 0, 3);
|
|
|
|
done:
|
|
gst_rtp_buffer_unmap (&rtp);
|
|
return TRUE;
|
|
}
|
|
|
|
/* @buf: (transfer full) */
|
|
static GstFlowReturn
|
|
handle_and_push_buffer (GstRtpOnvifTimestamp * self, GstBuffer * buf)
|
|
{
|
|
if (!handle_buffer (self, buf)) {
|
|
gst_buffer_unref (buf);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
return gst_pad_push (self->srcpad, buf);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_rtp_onvif_timestamp_chain (GstPad * pad, GstObject * parent,
|
|
GstBuffer * buf)
|
|
{
|
|
GstRtpOnvifTimestamp *self = GST_RTP_ONVIF_TIMESTAMP (parent);
|
|
GstFlowReturn result = GST_FLOW_OK;
|
|
|
|
if (!self->prop_set_e_bit && !self->prop_set_t_bit) {
|
|
/* Modify and push this buffer right away */
|
|
return handle_and_push_buffer (self, buf);
|
|
}
|
|
|
|
/* send any previously cached item(s), this leaves an empty queue */
|
|
result = send_cached_buffer_and_events (self);
|
|
|
|
/* enqueue the new item, as the only item in the queue */
|
|
self->buffer = buf;
|
|
return result;
|
|
}
|
|
|
|
/* @buf: (transfer full) */
|
|
static GstFlowReturn
|
|
handle_and_push_buffer_list (GstRtpOnvifTimestamp * self, GstBufferList * list)
|
|
{
|
|
GstBuffer *buf;
|
|
|
|
/* Set the extension on the *first* buffer */
|
|
buf = gst_buffer_list_get (list, 0);
|
|
if (!handle_buffer (self, buf)) {
|
|
gst_buffer_list_unref (list);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
return gst_pad_push_list (self->srcpad, list);
|
|
}
|
|
|
|
/* gst_pad_chain_list_default() refs the buffer when passing it to the chain
|
|
* function, making it not writable. We implement our own chain_list function
|
|
* to avoid having to copy each buffer. */
|
|
static GstFlowReturn
|
|
gst_rtp_onvif_timestamp_chain_list (GstPad * pad, GstObject * parent,
|
|
GstBufferList * list)
|
|
{
|
|
GstRtpOnvifTimestamp *self = GST_RTP_ONVIF_TIMESTAMP (parent);
|
|
GstFlowReturn result = GST_FLOW_OK;
|
|
|
|
if (!self->prop_set_e_bit && !self->prop_set_t_bit) {
|
|
return handle_and_push_buffer_list (self, list);
|
|
}
|
|
|
|
/* send any previously cached item(s), this leaves an empty queue */
|
|
result = send_cached_buffer_and_events (self);
|
|
|
|
/* enqueue the new item, as the only item in the queue */
|
|
self->list = list;
|
|
return result;
|
|
}
|