2 * Copyright (C) <2005> Wim Taymans <wim@fluendo.com>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more
16 * SECTION:gstrtpbasepayload
17 * @title: GstRTPBasePayload
18 * @short_description: Base class for RTP payloader
20 * Provides a base class for RTP payloaders
29 #include <gst/rtp/gstrtpbuffer.h>
31 #include "gstrtpbasepayload.h"
32 #include "gstrtpmeta.h"
33 #include "gstrtphdrext.h"
35 GST_DEBUG_CATEGORY_STATIC (rtpbasepayload_debug);
36 #define GST_CAT_DEFAULT (rtpbasepayload_debug)
38 static gboolean enable_experimental_twcc = FALSE;
40 struct _GstRTPBasePayloadPrivate
42 gboolean ts_offset_random;
43 gboolean seqnum_offset_random;
46 gboolean perfect_rtptime;
47 gint notified_first_timestamp;
52 GstBuffer *input_meta_buffer;
56 guint64 base_rtime_hz;
58 gboolean scale_rtptime;
60 gint64 prop_max_ptime;
61 gint64 caps_max_ptime;
63 gboolean onvif_no_rate_control;
67 gboolean delay_segment;
68 GstEvent *pending_segment;
70 GstCaps *subclass_srccaps;
73 /* array of GstRTPHeaderExtension's * */
74 GPtrArray *header_exts;
77 /* RTPBasePayload signals and args */
81 SIGNAL_REQUEST_EXTENSION,
83 SIGNAL_CLEAR_EXTENSIONS,
87 static guint gst_rtp_base_payload_signals[LAST_SIGNAL] = { 0 };
89 /* FIXME 0.11, a better default is the Ethernet MTU of
90 * 1500 - sizeof(headers) as pointed out by marcelm in IRC:
91 * So an Ethernet MTU of 1500, minus 60 for the max IP, minus 8 for UDP, gives
92 * 1432 bytes or so. And that should be adjusted downward further for other
93 * encapsulations like PPPoE, so 1400 at most.
95 #define DEFAULT_MTU 1400
97 #define DEFAULT_SSRC -1
98 #define DEFAULT_TIMESTAMP_OFFSET -1
99 #define DEFAULT_SEQNUM_OFFSET -1
100 #define DEFAULT_MAX_PTIME -1
101 #define DEFAULT_MIN_PTIME 0
102 #define DEFAULT_PERFECT_RTPTIME TRUE
103 #define DEFAULT_PTIME_MULTIPLE 0
104 #define DEFAULT_RUNNING_TIME GST_CLOCK_TIME_NONE
105 #define DEFAULT_SOURCE_INFO FALSE
106 #define DEFAULT_ONVIF_NO_RATE_CONTROL FALSE
107 #define DEFAULT_SCALE_RTPTIME TRUE
109 #define RTP_HEADER_EXT_ONE_BYTE_MAX_SIZE 16
110 #define RTP_HEADER_EXT_TWO_BYTE_MAX_SIZE 256
111 #define RTP_HEADER_EXT_ONE_BYTE_MAX_ID 14
112 #define RTP_HEADER_EXT_TWO_BYTE_MAX_ID 255
120 PROP_TIMESTAMP_OFFSET,
126 PROP_PERFECT_RTPTIME,
130 PROP_ONVIF_NO_RATE_CONTROL,
135 static void gst_rtp_base_payload_class_init (GstRTPBasePayloadClass * klass);
136 static void gst_rtp_base_payload_init (GstRTPBasePayload * rtpbasepayload,
138 static void gst_rtp_base_payload_finalize (GObject * object);
140 static GstCaps *gst_rtp_base_payload_getcaps_default (GstRTPBasePayload *
141 rtpbasepayload, GstPad * pad, GstCaps * filter);
143 static gboolean gst_rtp_base_payload_sink_event_default (GstRTPBasePayload *
144 rtpbasepayload, GstEvent * event);
145 static gboolean gst_rtp_base_payload_sink_event (GstPad * pad,
146 GstObject * parent, GstEvent * event);
147 static gboolean gst_rtp_base_payload_src_event_default (GstRTPBasePayload *
148 rtpbasepayload, GstEvent * event);
149 static gboolean gst_rtp_base_payload_src_event (GstPad * pad,
150 GstObject * parent, GstEvent * event);
151 static gboolean gst_rtp_base_payload_query_default (GstRTPBasePayload *
152 rtpbasepayload, GstPad * pad, GstQuery * query);
153 static gboolean gst_rtp_base_payload_query (GstPad * pad, GstObject * parent,
155 static GstFlowReturn gst_rtp_base_payload_chain (GstPad * pad,
156 GstObject * parent, GstBuffer * buffer);
158 static void gst_rtp_base_payload_set_property (GObject * object, guint prop_id,
159 const GValue * value, GParamSpec * pspec);
160 static void gst_rtp_base_payload_get_property (GObject * object, guint prop_id,
161 GValue * value, GParamSpec * pspec);
163 static GstStateChangeReturn gst_rtp_base_payload_change_state (GstElement *
164 element, GstStateChange transition);
166 static gboolean gst_rtp_base_payload_negotiate (GstRTPBasePayload * payload);
168 static void gst_rtp_base_payload_add_extension (GstRTPBasePayload * payload,
169 GstRTPHeaderExtension * ext);
170 static void gst_rtp_base_payload_clear_extensions (GstRTPBasePayload * payload);
172 static GstElementClass *parent_class = NULL;
173 static gint private_offset = 0;
176 gst_rtp_base_payload_get_type (void)
178 static GType rtpbasepayload_type = 0;
180 if (g_once_init_enter ((gsize *) & rtpbasepayload_type)) {
181 static const GTypeInfo rtpbasepayload_info = {
182 sizeof (GstRTPBasePayloadClass),
185 (GClassInitFunc) gst_rtp_base_payload_class_init,
188 sizeof (GstRTPBasePayload),
190 (GInstanceInitFunc) gst_rtp_base_payload_init,
194 _type = g_type_register_static (GST_TYPE_ELEMENT, "GstRTPBasePayload",
195 &rtpbasepayload_info, G_TYPE_FLAG_ABSTRACT);
198 g_type_add_instance_private (_type, sizeof (GstRTPBasePayloadPrivate));
200 g_once_init_leave ((gsize *) & rtpbasepayload_type, _type);
202 return rtpbasepayload_type;
205 static inline GstRTPBasePayloadPrivate *
206 gst_rtp_base_payload_get_instance_private (GstRTPBasePayload * self)
208 return (G_STRUCT_MEMBER_P (self, private_offset));
212 gst_rtp_base_payload_class_init (GstRTPBasePayloadClass * klass)
214 GObjectClass *gobject_class;
215 GstElementClass *gstelement_class;
217 gobject_class = (GObjectClass *) klass;
218 gstelement_class = (GstElementClass *) klass;
220 if (g_getenv ("GST_RTP_ENABLE_EXPERIMENTAL_TWCC_PROPERTY"))
221 enable_experimental_twcc = TRUE;
223 if (private_offset != 0)
224 g_type_class_adjust_private_offset (klass, &private_offset);
226 parent_class = g_type_class_peek_parent (klass);
228 gobject_class->finalize = gst_rtp_base_payload_finalize;
230 gobject_class->set_property = gst_rtp_base_payload_set_property;
231 gobject_class->get_property = gst_rtp_base_payload_get_property;
233 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MTU,
234 g_param_spec_uint ("mtu", "MTU",
235 "Maximum size of one packet",
236 28, G_MAXUINT, DEFAULT_MTU,
237 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
238 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PT,
239 g_param_spec_uint ("pt", "payload type",
240 "The payload type of the packets", 0, 0x7f, DEFAULT_PT,
241 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
242 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SSRC,
243 g_param_spec_uint ("ssrc", "SSRC",
244 "The SSRC of the packets (default == random)", 0, G_MAXUINT32,
245 DEFAULT_SSRC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
246 g_object_class_install_property (G_OBJECT_CLASS (klass),
247 PROP_TIMESTAMP_OFFSET, g_param_spec_uint ("timestamp-offset",
249 "Offset to add to all outgoing timestamps (default = random)", 0,
250 G_MAXUINT32, DEFAULT_TIMESTAMP_OFFSET,
251 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
252 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SEQNUM_OFFSET,
253 g_param_spec_int ("seqnum-offset", "Sequence number Offset",
254 "Offset to add to all outgoing seqnum (-1 = random)", -1, G_MAXUINT16,
255 DEFAULT_SEQNUM_OFFSET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
256 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_PTIME,
257 g_param_spec_int64 ("max-ptime", "Max packet time",
258 "Maximum duration of the packet data in ns (-1 = unlimited up to MTU)",
259 -1, G_MAXINT64, DEFAULT_MAX_PTIME,
260 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
262 * GstRTPBasePayload:min-ptime:
264 * Minimum duration of the packet data in ns (can't go above MTU)
266 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MIN_PTIME,
267 g_param_spec_int64 ("min-ptime", "Min packet time",
268 "Minimum duration of the packet data in ns (can't go above MTU)",
269 0, G_MAXINT64, DEFAULT_MIN_PTIME,
270 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
272 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TIMESTAMP,
273 g_param_spec_uint ("timestamp", "Timestamp",
274 "The RTP timestamp of the last processed packet",
275 0, G_MAXUINT32, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
276 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SEQNUM,
277 g_param_spec_uint ("seqnum", "Sequence number",
278 "The RTP sequence number of the last processed packet",
279 0, G_MAXUINT16, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
282 * GstRTPBasePayload:perfect-rtptime:
284 * Try to use the offset fields to generate perfect RTP timestamps. When this
285 * option is disabled, RTP timestamps are generated from GST_BUFFER_PTS of
286 * each payloaded buffer. The PTSes of buffers may not necessarily increment
287 * with the amount of data in each input buffer, consider e.g. the case where
288 * the buffer arrives from a network which means that the PTS is unrelated to
289 * the amount of data. Because the RTP timestamps are generated from
290 * GST_BUFFER_PTS this can result in RTP timestamps that also don't increment
291 * with the amount of data in the payloaded packet. To circumvent this it is
292 * possible to set the perfect rtptime option enabled. When this option is
293 * enabled the payloader will increment the RTP timestamps based on
294 * GST_BUFFER_OFFSET which relates to the amount of data in each packet
295 * rather than the GST_BUFFER_PTS of each buffer and therefore the RTP
296 * timestamps will more closely correlate with the amount of data in each
297 * buffer. Currently GstRTPBasePayload is limited to handling perfect RTP
298 * timestamps for audio streams.
300 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PERFECT_RTPTIME,
301 g_param_spec_boolean ("perfect-rtptime", "Perfect RTP Time",
302 "Generate perfect RTP timestamps when possible",
303 DEFAULT_PERFECT_RTPTIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
305 * GstRTPBasePayload:ptime-multiple:
307 * Force buffers to be multiples of this duration in ns (0 disables)
309 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PTIME_MULTIPLE,
310 g_param_spec_int64 ("ptime-multiple", "Packet time multiple",
311 "Force buffers to be multiples of this duration in ns (0 disables)",
312 0, G_MAXINT64, DEFAULT_PTIME_MULTIPLE,
313 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
316 * GstRTPBasePayload:stats:
318 * Various payloader statistics retrieved atomically (and are therefore
319 * synchroized with each other), these can be used e.g. to generate an
320 * RTP-Info header. This property return a GstStructure named
321 * application/x-rtp-payload-stats containing the following fields relating to
322 * the last processed buffer and current state of the stream being payloaded:
324 * * `clock-rate` :#G_TYPE_UINT, clock-rate of the stream
325 * * `running-time` :#G_TYPE_UINT64, running time
326 * * `seqnum` :#G_TYPE_UINT, sequence number, same as #GstRTPBasePayload:seqnum
327 * * `timestamp` :#G_TYPE_UINT, RTP timestamp, same as #GstRTPBasePayload:timestamp
328 * * `ssrc` :#G_TYPE_UINT, The SSRC in use
329 * * `pt` :#G_TYPE_UINT, The Payload type in use, same as #GstRTPBasePayload:pt
330 * * `seqnum-offset` :#G_TYPE_UINT, The current offset added to the seqnum
331 * * `timestamp-offset` :#G_TYPE_UINT, The current offset added to the timestamp
333 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_STATS,
334 g_param_spec_boxed ("stats", "Statistics", "Various statistics",
335 GST_TYPE_STRUCTURE, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
338 * GstRTPBasePayload:source-info:
340 * Enable writing the CSRC field in allocated RTP header based on RTP source
341 * information found in the input buffer's #GstRTPSourceMeta.
345 g_object_class_install_property (gobject_class, PROP_SOURCE_INFO,
346 g_param_spec_boolean ("source-info", "RTP source information",
347 "Write CSRC based on buffer meta RTP source information",
348 DEFAULT_SOURCE_INFO, G_PARAM_READWRITE));
351 * GstRTPBasePayload:onvif-no-rate-control:
353 * Make the payloader timestamp packets according to the Rate-Control=no
354 * behaviour specified in the ONVIF replay spec.
358 g_object_class_install_property (G_OBJECT_CLASS (klass),
359 PROP_ONVIF_NO_RATE_CONTROL, g_param_spec_boolean ("onvif-no-rate-control",
360 "ONVIF no rate control",
361 "Enable ONVIF Rate-Control=no timestamping mode",
362 DEFAULT_ONVIF_NO_RATE_CONTROL,
363 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
366 * GstRTPBasePayload:scale-rtptime:
368 * Make the RTP packets' timestamps be scaled with the segment's rate
369 * (corresponding to RTSP speed parameter). Disabling this property means
370 * the timestamps will not be affected by the set delivery speed (RTSP speed).
372 * Example: A server wants to allow streaming a recorded video in double
373 * speed but still have the timestamps correspond to the position in the
374 * video. This is achieved by the client setting RTSP Speed to 2 while the
375 * server has this property disabled.
379 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SCALE_RTPTIME,
380 g_param_spec_boolean ("scale-rtptime", "Scale RTP time",
381 "Whether the RTP timestamp should be scaled with the rate (speed)",
382 DEFAULT_SCALE_RTPTIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
385 * GstRTPBasePayload::add-extension:
386 * @object: the #GstRTPBasePayload
387 * @ext: (transfer full): the #GstRTPHeaderExtension
389 * Add @ext as an extension for writing part of an RTP header extension onto
390 * outgoing RTP packets.
394 gst_rtp_base_payload_signals[SIGNAL_ADD_EXTENSION] =
395 g_signal_new_class_handler ("add-extension", G_TYPE_FROM_CLASS (klass),
396 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
397 G_CALLBACK (gst_rtp_base_payload_add_extension), NULL, NULL, NULL,
398 G_TYPE_NONE, 1, GST_TYPE_RTP_HEADER_EXTENSION);
401 * GstRTPBasePayload::request-extension:
402 * @object: the #GstRTPBasePayload
403 * @ext_id: the extension id being requested
404 * @ext_uri: the extension URI being requested
406 * The returned @ext must be configured with the correct @ext_id and with the
407 * necessary attributes as required by the extension implementation.
409 * Returns: (transfer full): the #GstRTPHeaderExtension for @ext_id, or %NULL
413 gst_rtp_base_payload_signals[SIGNAL_REQUEST_EXTENSION] =
414 g_signal_new_class_handler ("request-extension",
415 G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, NULL, NULL, NULL, NULL,
416 GST_TYPE_RTP_HEADER_EXTENSION, 2, G_TYPE_UINT, G_TYPE_STRING);
419 * GstRTPBasePayload::clear-extensions:
420 * @object: the #GstRTPBasePayload
422 * Clear all RTP header extensions used by this payloader.
426 gst_rtp_base_payload_signals[SIGNAL_CLEAR_EXTENSIONS] =
427 g_signal_new_class_handler ("clear-extensions", G_TYPE_FROM_CLASS (klass),
428 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
429 G_CALLBACK (gst_rtp_base_payload_clear_extensions), NULL, NULL, NULL,
432 gstelement_class->change_state = gst_rtp_base_payload_change_state;
434 klass->get_caps = gst_rtp_base_payload_getcaps_default;
435 klass->sink_event = gst_rtp_base_payload_sink_event_default;
436 klass->src_event = gst_rtp_base_payload_src_event_default;
437 klass->query = gst_rtp_base_payload_query_default;
439 GST_DEBUG_CATEGORY_INIT (rtpbasepayload_debug, "rtpbasepayload", 0,
440 "Base class for RTP Payloaders");
444 gst_rtp_base_payload_init (GstRTPBasePayload * rtpbasepayload, gpointer g_class)
446 GstPadTemplate *templ;
447 GstRTPBasePayloadPrivate *priv;
449 rtpbasepayload->priv = priv =
450 gst_rtp_base_payload_get_instance_private (rtpbasepayload);
453 gst_element_class_get_pad_template (GST_ELEMENT_CLASS (g_class), "src");
454 g_return_if_fail (templ != NULL);
456 rtpbasepayload->srcpad = gst_pad_new_from_template (templ, "src");
457 gst_pad_set_event_function (rtpbasepayload->srcpad,
458 gst_rtp_base_payload_src_event);
459 gst_element_add_pad (GST_ELEMENT (rtpbasepayload), rtpbasepayload->srcpad);
462 gst_element_class_get_pad_template (GST_ELEMENT_CLASS (g_class), "sink");
463 g_return_if_fail (templ != NULL);
465 rtpbasepayload->sinkpad = gst_pad_new_from_template (templ, "sink");
466 gst_pad_set_chain_function (rtpbasepayload->sinkpad,
467 gst_rtp_base_payload_chain);
468 gst_pad_set_event_function (rtpbasepayload->sinkpad,
469 gst_rtp_base_payload_sink_event);
470 gst_pad_set_query_function (rtpbasepayload->sinkpad,
471 gst_rtp_base_payload_query);
472 gst_element_add_pad (GST_ELEMENT (rtpbasepayload), rtpbasepayload->sinkpad);
474 rtpbasepayload->mtu = DEFAULT_MTU;
475 rtpbasepayload->pt = DEFAULT_PT;
476 rtpbasepayload->seqnum_offset = DEFAULT_SEQNUM_OFFSET;
477 rtpbasepayload->ssrc = DEFAULT_SSRC;
478 rtpbasepayload->ts_offset = DEFAULT_TIMESTAMP_OFFSET;
479 priv->running_time = DEFAULT_RUNNING_TIME;
480 priv->seqnum_offset_random = (rtpbasepayload->seqnum_offset == -1);
481 priv->ts_offset_random = (rtpbasepayload->ts_offset == -1);
482 priv->ssrc_random = (rtpbasepayload->ssrc == -1);
483 priv->pt_set = FALSE;
484 priv->source_info = DEFAULT_SOURCE_INFO;
486 rtpbasepayload->max_ptime = DEFAULT_MAX_PTIME;
487 rtpbasepayload->min_ptime = DEFAULT_MIN_PTIME;
488 rtpbasepayload->priv->perfect_rtptime = DEFAULT_PERFECT_RTPTIME;
489 rtpbasepayload->ptime_multiple = DEFAULT_PTIME_MULTIPLE;
490 rtpbasepayload->priv->base_offset = GST_BUFFER_OFFSET_NONE;
491 rtpbasepayload->priv->base_rtime_hz = GST_BUFFER_OFFSET_NONE;
492 rtpbasepayload->priv->onvif_no_rate_control = DEFAULT_ONVIF_NO_RATE_CONTROL;
493 rtpbasepayload->priv->scale_rtptime = DEFAULT_SCALE_RTPTIME;
495 rtpbasepayload->media = NULL;
496 rtpbasepayload->encoding_name = NULL;
498 rtpbasepayload->clock_rate = 0;
500 rtpbasepayload->priv->caps_max_ptime = DEFAULT_MAX_PTIME;
501 rtpbasepayload->priv->prop_max_ptime = DEFAULT_MAX_PTIME;
502 rtpbasepayload->priv->header_exts =
503 g_ptr_array_new_with_free_func ((GDestroyNotify) gst_object_unref);
507 gst_rtp_base_payload_finalize (GObject * object)
509 GstRTPBasePayload *rtpbasepayload;
511 rtpbasepayload = GST_RTP_BASE_PAYLOAD (object);
513 g_free (rtpbasepayload->media);
514 rtpbasepayload->media = NULL;
515 g_free (rtpbasepayload->encoding_name);
516 rtpbasepayload->encoding_name = NULL;
518 gst_caps_replace (&rtpbasepayload->priv->subclass_srccaps, NULL);
519 gst_caps_replace (&rtpbasepayload->priv->sinkcaps, NULL);
521 g_ptr_array_unref (rtpbasepayload->priv->header_exts);
522 rtpbasepayload->priv->header_exts = NULL;
524 G_OBJECT_CLASS (parent_class)->finalize (object);
528 gst_rtp_base_payload_getcaps_default (GstRTPBasePayload * rtpbasepayload,
529 GstPad * pad, GstCaps * filter)
533 caps = GST_PAD_TEMPLATE_CAPS (GST_PAD_PAD_TEMPLATE (pad));
534 GST_DEBUG_OBJECT (pad,
535 "using pad template %p with caps %p %" GST_PTR_FORMAT,
536 GST_PAD_PAD_TEMPLATE (pad), caps, caps);
539 caps = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
541 caps = gst_caps_ref (caps);
547 gst_rtp_base_payload_sink_event_default (GstRTPBasePayload * rtpbasepayload,
550 GstObject *parent = GST_OBJECT_CAST (rtpbasepayload);
551 gboolean res = FALSE;
553 switch (GST_EVENT_TYPE (event)) {
554 case GST_EVENT_FLUSH_START:
555 res = gst_pad_event_default (rtpbasepayload->sinkpad, parent, event);
557 case GST_EVENT_FLUSH_STOP:
558 res = gst_pad_event_default (rtpbasepayload->sinkpad, parent, event);
559 gst_segment_init (&rtpbasepayload->segment, GST_FORMAT_UNDEFINED);
560 gst_event_replace (&rtpbasepayload->priv->pending_segment, NULL);
564 GstRTPBasePayloadClass *rtpbasepayload_class;
567 gst_event_parse_caps (event, &caps);
568 GST_DEBUG_OBJECT (rtpbasepayload, "setting caps %" GST_PTR_FORMAT, caps);
570 gst_caps_replace (&rtpbasepayload->priv->sinkcaps, caps);
572 rtpbasepayload_class = GST_RTP_BASE_PAYLOAD_GET_CLASS (rtpbasepayload);
573 if (rtpbasepayload_class->set_caps)
574 res = rtpbasepayload_class->set_caps (rtpbasepayload, caps);
576 res = gst_rtp_base_payload_negotiate (rtpbasepayload);
578 rtpbasepayload->priv->negotiated = res;
580 gst_event_unref (event);
583 case GST_EVENT_SEGMENT:
587 segment = &rtpbasepayload->segment;
588 gst_event_copy_segment (event, segment);
590 rtpbasepayload->priv->base_offset = GST_BUFFER_OFFSET_NONE;
592 GST_DEBUG_OBJECT (rtpbasepayload,
593 "configured SEGMENT %" GST_SEGMENT_FORMAT, segment);
594 if (rtpbasepayload->priv->delay_segment) {
595 gst_event_replace (&rtpbasepayload->priv->pending_segment, event);
596 gst_event_unref (event);
599 res = gst_pad_event_default (rtpbasepayload->sinkpad, parent, event);
605 if (G_UNLIKELY (rtpbasepayload->priv->pending_segment)) {
606 gst_pad_push_event (rtpbasepayload->srcpad,
607 rtpbasepayload->priv->pending_segment);
608 rtpbasepayload->priv->pending_segment = FALSE;
609 rtpbasepayload->priv->delay_segment = FALSE;
611 res = gst_pad_event_default (rtpbasepayload->sinkpad, parent, event);
615 res = gst_pad_event_default (rtpbasepayload->sinkpad, parent, event);
622 gst_rtp_base_payload_sink_event (GstPad * pad, GstObject * parent,
625 GstRTPBasePayload *rtpbasepayload;
626 GstRTPBasePayloadClass *rtpbasepayload_class;
627 gboolean res = FALSE;
629 rtpbasepayload = GST_RTP_BASE_PAYLOAD (parent);
630 rtpbasepayload_class = GST_RTP_BASE_PAYLOAD_GET_CLASS (rtpbasepayload);
632 if (rtpbasepayload_class->sink_event)
633 res = rtpbasepayload_class->sink_event (rtpbasepayload, event);
635 gst_event_unref (event);
641 gst_rtp_base_payload_src_event_default (GstRTPBasePayload * rtpbasepayload,
644 GstObject *parent = GST_OBJECT_CAST (rtpbasepayload);
645 gboolean res = TRUE, forward = TRUE;
647 switch (GST_EVENT_TYPE (event)) {
648 case GST_EVENT_CUSTOM_UPSTREAM:
650 const GstStructure *s = gst_event_get_structure (event);
652 if (gst_structure_has_name (s, "GstRTPCollision")) {
655 if (!gst_structure_get_uint (s, "ssrc", &ssrc))
658 GST_DEBUG_OBJECT (rtpbasepayload, "collided ssrc: %" G_GUINT32_FORMAT,
661 /* choose another ssrc for our stream */
662 if (ssrc == rtpbasepayload->current_ssrc) {
664 guint suggested_ssrc = 0;
666 if (gst_structure_get_uint (s, "suggested-ssrc", &suggested_ssrc))
667 rtpbasepayload->current_ssrc = suggested_ssrc;
669 while (ssrc == rtpbasepayload->current_ssrc)
670 rtpbasepayload->current_ssrc = g_random_int ();
672 caps = gst_pad_get_current_caps (rtpbasepayload->srcpad);
674 caps = gst_caps_make_writable (caps);
675 gst_caps_set_simple (caps,
676 "ssrc", G_TYPE_UINT, rtpbasepayload->current_ssrc, NULL);
677 res = gst_pad_set_caps (rtpbasepayload->srcpad, caps);
678 gst_caps_unref (caps);
681 /* the event was for us */
692 res = gst_pad_event_default (rtpbasepayload->srcpad, parent, event);
694 gst_event_unref (event);
700 gst_rtp_base_payload_src_event (GstPad * pad, GstObject * parent,
703 GstRTPBasePayload *rtpbasepayload;
704 GstRTPBasePayloadClass *rtpbasepayload_class;
705 gboolean res = FALSE;
707 rtpbasepayload = GST_RTP_BASE_PAYLOAD (parent);
708 rtpbasepayload_class = GST_RTP_BASE_PAYLOAD_GET_CLASS (rtpbasepayload);
710 if (rtpbasepayload_class->src_event)
711 res = rtpbasepayload_class->src_event (rtpbasepayload, event);
713 gst_event_unref (event);
720 gst_rtp_base_payload_query_default (GstRTPBasePayload * rtpbasepayload,
721 GstPad * pad, GstQuery * query)
723 gboolean res = FALSE;
725 switch (GST_QUERY_TYPE (query)) {
728 GstRTPBasePayloadClass *rtpbasepayload_class;
729 GstCaps *filter, *caps;
731 gst_query_parse_caps (query, &filter);
732 GST_DEBUG_OBJECT (rtpbasepayload, "getting caps with filter %"
733 GST_PTR_FORMAT, filter);
735 rtpbasepayload_class = GST_RTP_BASE_PAYLOAD_GET_CLASS (rtpbasepayload);
736 if (rtpbasepayload_class->get_caps) {
737 caps = rtpbasepayload_class->get_caps (rtpbasepayload, pad, filter);
738 gst_query_set_caps_result (query, caps);
739 gst_caps_unref (caps);
746 gst_pad_query_default (pad, GST_OBJECT_CAST (rtpbasepayload), query);
753 gst_rtp_base_payload_query (GstPad * pad, GstObject * parent, GstQuery * query)
755 GstRTPBasePayload *rtpbasepayload;
756 GstRTPBasePayloadClass *rtpbasepayload_class;
757 gboolean res = FALSE;
759 rtpbasepayload = GST_RTP_BASE_PAYLOAD (parent);
760 rtpbasepayload_class = GST_RTP_BASE_PAYLOAD_GET_CLASS (rtpbasepayload);
762 if (rtpbasepayload_class->query)
763 res = rtpbasepayload_class->query (rtpbasepayload, pad, query);
769 gst_rtp_base_payload_chain (GstPad * pad, GstObject * parent,
772 GstRTPBasePayload *rtpbasepayload;
773 GstRTPBasePayloadClass *rtpbasepayload_class;
776 rtpbasepayload = GST_RTP_BASE_PAYLOAD (parent);
777 rtpbasepayload_class = GST_RTP_BASE_PAYLOAD_GET_CLASS (rtpbasepayload);
779 if (!rtpbasepayload_class->handle_buffer)
782 if (!rtpbasepayload->priv->negotiated)
785 if (rtpbasepayload->priv->source_info
786 || rtpbasepayload->priv->header_exts->len > 0) {
787 /* Save a copy of meta (instead of taking an extra reference before
788 * handle_buffer) to make the meta available when allocating a output
790 rtpbasepayload->priv->input_meta_buffer = gst_buffer_new ();
791 gst_buffer_copy_into (rtpbasepayload->priv->input_meta_buffer, buffer,
792 GST_BUFFER_COPY_META, 0, -1);
795 if (gst_pad_check_reconfigure (GST_RTP_BASE_PAYLOAD_SRCPAD (rtpbasepayload))) {
796 if (!gst_rtp_base_payload_negotiate (rtpbasepayload)) {
797 gst_pad_mark_reconfigure (GST_RTP_BASE_PAYLOAD_SRCPAD (rtpbasepayload));
798 if (GST_PAD_IS_FLUSHING (GST_RTP_BASE_PAYLOAD_SRCPAD (rtpbasepayload))) {
801 goto negotiate_failed;
806 ret = rtpbasepayload_class->handle_buffer (rtpbasepayload, buffer);
808 gst_buffer_replace (&rtpbasepayload->priv->input_meta_buffer, NULL);
815 GST_ELEMENT_ERROR (rtpbasepayload, STREAM, NOT_IMPLEMENTED, (NULL),
816 ("subclass did not implement handle_buffer function"));
817 gst_buffer_unref (buffer);
818 return GST_FLOW_ERROR;
822 GST_ELEMENT_ERROR (rtpbasepayload, CORE, NEGOTIATION, (NULL),
823 ("No input format was negotiated, i.e. no caps event was received. "
824 "Perhaps you need a parser or typefind element before the payloader"));
825 gst_buffer_unref (buffer);
826 return GST_FLOW_NOT_NEGOTIATED;
830 GST_DEBUG_OBJECT (rtpbasepayload, "Not negotiated");
831 gst_buffer_unref (buffer);
832 return GST_FLOW_NOT_NEGOTIATED;
836 GST_DEBUG_OBJECT (rtpbasepayload, "we are flushing");
837 gst_buffer_unref (buffer);
838 return GST_FLOW_FLUSHING;
843 * gst_rtp_base_payload_set_options:
844 * @payload: a #GstRTPBasePayload
845 * @media: the media type (typically "audio" or "video")
846 * @dynamic: if the payload type is dynamic
847 * @encoding_name: the encoding name
848 * @clock_rate: the clock rate of the media
850 * Set the rtp options of the payloader. These options will be set in the caps
851 * of the payloader. Subclasses must call this method before calling
852 * gst_rtp_base_payload_push() or gst_rtp_base_payload_set_outcaps().
855 gst_rtp_base_payload_set_options (GstRTPBasePayload * payload,
856 const gchar * media, gboolean dynamic, const gchar * encoding_name,
859 g_return_if_fail (payload != NULL);
860 g_return_if_fail (clock_rate != 0);
862 g_free (payload->media);
863 payload->media = g_strdup (media);
864 payload->dynamic = dynamic;
865 g_free (payload->encoding_name);
866 payload->encoding_name = g_strdup (encoding_name);
867 payload->clock_rate = clock_rate;
871 copy_fixed (GQuark field_id, const GValue * value, GstStructure * dest)
873 if (gst_value_is_fixed (value)) {
874 gst_structure_id_set_value (dest, field_id, value);
880 update_max_ptime (GstRTPBasePayload * rtpbasepayload)
882 if (rtpbasepayload->priv->caps_max_ptime != -1 &&
883 rtpbasepayload->priv->prop_max_ptime != -1)
884 rtpbasepayload->max_ptime = MIN (rtpbasepayload->priv->caps_max_ptime,
885 rtpbasepayload->priv->prop_max_ptime);
886 else if (rtpbasepayload->priv->caps_max_ptime != -1)
887 rtpbasepayload->max_ptime = rtpbasepayload->priv->caps_max_ptime;
888 else if (rtpbasepayload->priv->prop_max_ptime != -1)
889 rtpbasepayload->max_ptime = rtpbasepayload->priv->prop_max_ptime;
891 rtpbasepayload->max_ptime = DEFAULT_MAX_PTIME;
895 _set_caps (GQuark field_id, const GValue * value, GstCaps * caps)
897 gst_caps_set_value (caps, g_quark_to_string (field_id), value);
903 * gst_rtp_base_payload_set_outcaps_structure:
904 * @payload: a #GstRTPBasePayload
905 * @s: (nullable): a #GstStructure with the caps fields
907 * Configure the output caps with the optional fields.
909 * Returns: %TRUE if the caps could be set.
914 gst_rtp_base_payload_set_outcaps_structure (GstRTPBasePayload * payload,
919 /* fill in the defaults, their properties cannot be negotiated. */
920 srccaps = gst_caps_new_simple ("application/x-rtp",
921 "media", G_TYPE_STRING, payload->media,
922 "clock-rate", G_TYPE_INT, payload->clock_rate,
923 "encoding-name", G_TYPE_STRING, payload->encoding_name, NULL);
925 GST_DEBUG_OBJECT (payload, "defaults: %" GST_PTR_FORMAT, srccaps);
927 if (s && gst_structure_n_fields (s) > 0) {
928 gst_structure_foreach (s, (GstStructureForeachFunc) _set_caps, srccaps);
930 GST_DEBUG_OBJECT (payload, "custom added: %" GST_PTR_FORMAT, srccaps);
933 gst_caps_replace (&payload->priv->subclass_srccaps, srccaps);
934 gst_caps_unref (srccaps);
936 return gst_rtp_base_payload_negotiate (payload);
940 * gst_rtp_base_payload_set_outcaps:
941 * @payload: a #GstRTPBasePayload
942 * @fieldname: the first field name or %NULL
945 * Configure the output caps with the optional parameters.
947 * Variable arguments should be in the form field name, field type
948 * (as a GType), value(s). The last variable argument should be NULL.
950 * Returns: %TRUE if the caps could be set.
953 gst_rtp_base_payload_set_outcaps (GstRTPBasePayload * payload,
954 const gchar * fieldname, ...)
957 GstStructure *s = NULL;
962 s = gst_structure_new_empty ("unused");
964 /* override with custom properties */
965 va_start (varargs, fieldname);
966 gst_structure_set_valist (s, fieldname, varargs);
970 result = gst_rtp_base_payload_set_outcaps_structure (payload, s);
972 gst_clear_structure (&s);
978 add_and_ref_item (GstRTPHeaderExtension * ext, GPtrArray * ret)
980 g_ptr_array_add (ret, gst_object_ref (ext));
984 remove_item_from (GstRTPHeaderExtension * ext, GPtrArray * ret)
986 g_ptr_array_remove_fast (ret, ext);
990 add_item_to (GstRTPHeaderExtension * ext, GPtrArray * ret)
992 g_ptr_array_add (ret, ext);
996 add_header_ext_to_caps (GstRTPHeaderExtension * ext, GstCaps * caps)
998 if (!gst_rtp_header_extension_set_caps_from_attributes (ext, caps)) {
999 GST_WARNING ("Failed to set caps from rtp header extension");
1004 gst_rtp_base_payload_negotiate (GstRTPBasePayload * payload)
1006 GstCaps *templ, *peercaps, *srccaps;
1007 GstStructure *s, *d;
1008 gboolean res = TRUE;
1010 payload->priv->caps_max_ptime = DEFAULT_MAX_PTIME;
1013 gst_pad_check_reconfigure (payload->srcpad);
1015 templ = gst_pad_get_pad_template_caps (payload->srcpad);
1017 if (payload->priv->subclass_srccaps) {
1018 GstCaps *tmp = gst_caps_intersect (payload->priv->subclass_srccaps,
1020 gst_caps_unref (templ);
1024 peercaps = gst_pad_peer_query_caps (payload->srcpad, templ);
1026 if (peercaps == NULL) {
1027 /* no peer caps, just add the other properties */
1029 srccaps = gst_caps_copy (templ);
1030 gst_caps_set_simple (srccaps,
1031 "payload", G_TYPE_INT, GST_RTP_BASE_PAYLOAD_PT (payload),
1032 "ssrc", G_TYPE_UINT, payload->current_ssrc,
1033 "timestamp-offset", G_TYPE_UINT, payload->ts_base,
1034 "seqnum-offset", G_TYPE_UINT, payload->seqnum_base, NULL);
1036 GST_DEBUG_OBJECT (payload, "no peer caps: %" GST_PTR_FORMAT, srccaps);
1039 const GValue *value;
1040 gboolean have_pt = FALSE;
1041 gboolean have_ts_offset = FALSE;
1042 gboolean have_seqnum_offset = FALSE;
1043 guint max_ptime, ptime;
1045 /* peer provides caps we can use to fixate. They are already intersected
1046 * with our srccaps, just make them writable */
1047 temp = gst_caps_make_writable (peercaps);
1050 if (gst_caps_is_empty (temp)) {
1051 gst_caps_unref (temp);
1052 gst_caps_unref (templ);
1057 /* We prefer the pt, timestamp-offset, seqnum-offset from the
1058 * property (if set), or any previously configured value over what
1059 * downstream prefers. Only if downstream can't accept that, or the
1060 * properties were not set, we fall back to choosing downstream's
1063 * For ssrc we prefer any value downstream suggests, otherwise
1064 * the property value or as a last resort a random value.
1065 * This difference for ssrc is implemented for retaining backwards
1066 * compatibility with changing rtpsession's internal-ssrc property.
1068 * FIXME 2.0: All these properties should go away and be negotiated
1072 /* try to use the previously set pt, or the one from the property */
1073 if (payload->priv->pt_set || gst_pad_has_current_caps (payload->srcpad)) {
1074 GstCaps *probe_caps = gst_caps_copy (templ);
1075 GstCaps *intersection;
1077 gst_caps_set_simple (probe_caps, "payload", G_TYPE_INT,
1078 GST_RTP_BASE_PAYLOAD_PT (payload), NULL);
1079 intersection = gst_caps_intersect (probe_caps, temp);
1081 if (!gst_caps_is_empty (intersection)) {
1082 GST_LOG_OBJECT (payload, "Using selected pt %d",
1083 GST_RTP_BASE_PAYLOAD_PT (payload));
1085 gst_caps_unref (temp);
1086 temp = intersection;
1088 GST_WARNING_OBJECT (payload, "Can't use selected pt %d",
1089 GST_RTP_BASE_PAYLOAD_PT (payload));
1090 gst_caps_unref (intersection);
1092 gst_caps_unref (probe_caps);
1095 /* If we got no pt above, select one now */
1099 /* get first structure */
1100 s = gst_caps_get_structure (temp, 0);
1102 if (gst_structure_get_int (s, "payload", &pt)) {
1104 GST_RTP_BASE_PAYLOAD_PT (payload) = pt;
1105 GST_LOG_OBJECT (payload, "using peer pt %d", pt);
1107 if (gst_structure_has_field (s, "payload")) {
1108 /* can only fixate if there is a field */
1109 gst_structure_fixate_field_nearest_int (s, "payload",
1110 GST_RTP_BASE_PAYLOAD_PT (payload));
1111 gst_structure_get_int (s, "payload", &pt);
1112 GST_RTP_BASE_PAYLOAD_PT (payload) = pt;
1113 GST_LOG_OBJECT (payload, "using peer pt %d", pt);
1115 /* no pt field, use the internal pt */
1116 pt = GST_RTP_BASE_PAYLOAD_PT (payload);
1117 gst_structure_set (s, "payload", G_TYPE_INT, pt, NULL);
1118 GST_LOG_OBJECT (payload, "using internal pt %d", pt);
1124 /* If we got no ssrc above, select one now */
1125 /* get first structure */
1126 s = gst_caps_get_structure (temp, 0);
1128 if (gst_structure_has_field_typed (s, "ssrc", G_TYPE_UINT)) {
1129 value = gst_structure_get_value (s, "ssrc");
1130 payload->current_ssrc = g_value_get_uint (value);
1131 GST_LOG_OBJECT (payload, "using peer ssrc %08x", payload->current_ssrc);
1133 /* FIXME, fixate_nearest_uint would be even better but we
1134 * don't support uint ranges so how likely is it that anybody
1135 * uses a list of possible ssrcs */
1136 gst_structure_set (s, "ssrc", G_TYPE_UINT, payload->current_ssrc, NULL);
1137 GST_LOG_OBJECT (payload, "using internal ssrc %08x",
1138 payload->current_ssrc);
1142 /* try to select the previously used timestamp-offset, or the one from the property */
1143 if (!payload->priv->ts_offset_random
1144 || gst_pad_has_current_caps (payload->srcpad)) {
1145 GstCaps *probe_caps = gst_caps_copy (templ);
1146 GstCaps *intersection;
1148 gst_caps_set_simple (probe_caps, "timestamp-offset", G_TYPE_UINT,
1149 payload->ts_base, NULL);
1150 intersection = gst_caps_intersect (probe_caps, temp);
1152 if (!gst_caps_is_empty (intersection)) {
1153 GST_LOG_OBJECT (payload, "Using selected timestamp-offset %u",
1155 gst_caps_unref (temp);
1156 temp = intersection;
1157 have_ts_offset = TRUE;
1159 GST_WARNING_OBJECT (payload, "Can't use selected timestamp-offset %u",
1161 gst_caps_unref (intersection);
1163 gst_caps_unref (probe_caps);
1166 /* If we got no timestamp-offset above, select one now */
1167 if (!have_ts_offset) {
1168 /* get first structure */
1169 s = gst_caps_get_structure (temp, 0);
1171 if (gst_structure_has_field_typed (s, "timestamp-offset", G_TYPE_UINT)) {
1172 value = gst_structure_get_value (s, "timestamp-offset");
1173 payload->ts_base = g_value_get_uint (value);
1174 GST_LOG_OBJECT (payload, "using peer timestamp-offset %u",
1177 /* FIXME, fixate_nearest_uint would be even better but we
1178 * don't support uint ranges so how likely is it that anybody
1179 * uses a list of possible timestamp-offsets */
1180 gst_structure_set (s, "timestamp-offset", G_TYPE_UINT, payload->ts_base,
1182 GST_LOG_OBJECT (payload, "using internal timestamp-offset %u",
1188 /* try to select the previously used seqnum-offset, or the one from the property */
1189 if (!payload->priv->seqnum_offset_random
1190 || gst_pad_has_current_caps (payload->srcpad)) {
1191 GstCaps *probe_caps = gst_caps_copy (templ);
1192 GstCaps *intersection;
1194 gst_caps_set_simple (probe_caps, "seqnum-offset", G_TYPE_UINT,
1195 payload->seqnum_base, NULL);
1196 intersection = gst_caps_intersect (probe_caps, temp);
1198 if (!gst_caps_is_empty (intersection)) {
1199 GST_LOG_OBJECT (payload, "Using selected seqnum-offset %u",
1200 payload->seqnum_base);
1201 gst_caps_unref (temp);
1202 temp = intersection;
1203 have_seqnum_offset = TRUE;
1205 GST_WARNING_OBJECT (payload, "Can't use selected seqnum-offset %u",
1206 payload->seqnum_base);
1207 gst_caps_unref (intersection);
1209 gst_caps_unref (probe_caps);
1212 /* If we got no seqnum-offset above, select one now */
1213 if (!have_seqnum_offset) {
1214 /* get first structure */
1215 s = gst_caps_get_structure (temp, 0);
1217 if (gst_structure_has_field_typed (s, "seqnum-offset", G_TYPE_UINT)) {
1218 value = gst_structure_get_value (s, "seqnum-offset");
1219 payload->seqnum_base = g_value_get_uint (value);
1220 GST_LOG_OBJECT (payload, "using peer seqnum-offset %u",
1221 payload->seqnum_base);
1222 payload->priv->next_seqnum = payload->seqnum_base;
1223 payload->seqnum = payload->seqnum_base;
1224 payload->priv->seqnum_offset_random = FALSE;
1226 /* FIXME, fixate_nearest_uint would be even better but we
1227 * don't support uint ranges so how likely is it that anybody
1228 * uses a list of possible seqnum-offsets */
1229 gst_structure_set (s, "seqnum-offset", G_TYPE_UINT,
1230 payload->seqnum_base, NULL);
1231 GST_LOG_OBJECT (payload, "using internal seqnum-offset %u",
1232 payload->seqnum_base);
1238 /* now fixate, start by taking the first caps */
1239 temp = gst_caps_truncate (temp);
1241 /* get first structure */
1242 s = gst_caps_get_structure (temp, 0);
1244 if (gst_structure_get_uint (s, "maxptime", &max_ptime))
1245 payload->priv->caps_max_ptime = max_ptime * GST_MSECOND;
1247 if (gst_structure_get_uint (s, "ptime", &ptime))
1248 payload->ptime = ptime * GST_MSECOND;
1250 /* make the target caps by copying over all the fixed fields, removing the
1251 * unfixed fields. */
1252 srccaps = gst_caps_new_empty_simple (gst_structure_get_name (s));
1253 d = gst_caps_get_structure (srccaps, 0);
1255 gst_structure_foreach (s, (GstStructureForeachFunc) copy_fixed, d);
1257 gst_caps_unref (temp);
1259 GST_DEBUG_OBJECT (payload, "with peer caps: %" GST_PTR_FORMAT, srccaps);
1262 if (payload->priv->sinkcaps != NULL) {
1263 s = gst_caps_get_structure (payload->priv->sinkcaps, 0);
1264 if (g_str_has_prefix (gst_structure_get_name (s), "video")) {
1265 gboolean has_framerate;
1268 GST_DEBUG_OBJECT (payload, "video caps: %" GST_PTR_FORMAT,
1269 payload->priv->sinkcaps);
1271 has_framerate = gst_structure_get_fraction (s, "framerate", &num, &denom);
1272 if (has_framerate && num == 0 && denom == 1) {
1274 gst_structure_get_fraction (s, "max-framerate", &num, &denom);
1277 if (has_framerate) {
1278 gchar str[G_ASCII_DTOSTR_BUF_SIZE];
1281 gst_util_fraction_to_double (num, denom, &framerate);
1282 g_ascii_dtostr (str, G_ASCII_DTOSTR_BUF_SIZE, framerate);
1283 d = gst_caps_get_structure (srccaps, 0);
1284 gst_structure_set (d, "a-framerate", G_TYPE_STRING, str, NULL);
1287 GST_DEBUG_OBJECT (payload, "with video caps: %" GST_PTR_FORMAT, srccaps);
1291 update_max_ptime (payload);
1294 /* try to find header extension implementations for the list in the
1296 GstStructure *s = gst_caps_get_structure (srccaps, 0);
1297 guint i, j, n_fields = gst_structure_n_fields (s);
1298 GPtrArray *header_exts = g_ptr_array_new_with_free_func (gst_object_unref);
1299 GPtrArray *to_add = g_ptr_array_new ();
1300 GPtrArray *to_remove = g_ptr_array_new ();
1302 GST_OBJECT_LOCK (payload);
1303 g_ptr_array_foreach (payload->priv->header_exts,
1304 (GFunc) add_and_ref_item, header_exts);
1305 GST_OBJECT_UNLOCK (payload);
1307 for (i = 0; i < n_fields; i++) {
1308 const gchar *field_name = gst_structure_nth_field_name (s, i);
1309 if (g_str_has_prefix (field_name, "extmap-")) {
1311 const gchar *uri = NULL;
1314 GstRTPHeaderExtension *ext = NULL;
1317 ext_id = g_ascii_strtoull (&field_name[strlen ("extmap-")], &nptr, 10);
1318 if (errno != 0 || (ext_id == 0 && field_name == nptr)) {
1319 GST_WARNING_OBJECT (payload, "could not parse id from %s",
1325 val = gst_structure_get_value (s, field_name);
1326 if (G_VALUE_HOLDS_STRING (val)) {
1327 uri = g_value_get_string (val);
1328 } else if (GST_VALUE_HOLDS_ARRAY (val)) {
1329 /* the uri is the second value in the array */
1330 const GValue *str = gst_value_array_get_value (val, 1);
1331 if (G_VALUE_HOLDS_STRING (str)) {
1332 uri = g_value_get_string (str);
1337 GST_WARNING_OBJECT (payload, "could not get extmap uri for "
1338 "field %s", field_name);
1343 /* try to find if this extension mapping already exists */
1344 for (j = 0; j < header_exts->len; j++) {
1345 ext = g_ptr_array_index (header_exts, j);
1346 if (gst_rtp_header_extension_get_id (ext) == ext_id) {
1347 if (g_strcmp0 (uri, gst_rtp_header_extension_get_uri (ext)) == 0) {
1348 /* still matching, we're good, set attributes from caps in case
1349 * the caps have been updated */
1350 if (!gst_rtp_header_extension_set_attributes_from_caps (ext,
1352 GST_WARNING_OBJECT (payload,
1353 "Failed to configure rtp header " "extension %"
1354 GST_PTR_FORMAT " attributes from caps %" GST_PTR_FORMAT,
1361 GST_DEBUG_OBJECT (payload, "extension id %" G_GUINT64_FORMAT
1362 "was replaced with a different extension uri "
1363 "original:\'%s' vs \'%s\'", ext_id,
1364 gst_rtp_header_extension_get_uri (ext), uri);
1365 g_ptr_array_add (to_remove, ext);
1374 /* if no extension, attempt to request one */
1376 GST_DEBUG_OBJECT (payload, "requesting extension for id %"
1377 G_GUINT64_FORMAT " and uri %s", ext_id, uri);
1378 g_signal_emit (payload,
1379 gst_rtp_base_payload_signals[SIGNAL_REQUEST_EXTENSION], 0,
1381 GST_DEBUG_OBJECT (payload, "request returned extension %p \'%s\' "
1382 "for id %" G_GUINT64_FORMAT " and uri %s", ext,
1383 ext ? GST_OBJECT_NAME (ext) : "", ext_id, uri);
1385 if (ext && gst_rtp_header_extension_get_id (ext) != ext_id) {
1386 g_warning ("\'request-extension\' signal provided an rtp header "
1387 "extension for uri \'%s\' that does not match the requested "
1388 "extension id %" G_GUINT64_FORMAT, uri, ext_id);
1389 gst_clear_object (&ext);
1392 if (ext && !gst_rtp_header_extension_set_attributes_from_caps (ext,
1394 GST_WARNING_OBJECT (payload,
1395 "Failed to configure rtp header " "extension %"
1396 GST_PTR_FORMAT " attributes from caps %" GST_PTR_FORMAT,
1399 g_clear_object (&ext);
1403 /* We don't create an extension implementation by default and require
1404 * the caller to set the appropriate extension if it's required */
1406 g_ptr_array_add (to_add, ext);
1412 GST_OBJECT_LOCK (payload);
1413 g_ptr_array_foreach (to_remove, (GFunc) remove_item_from,
1414 payload->priv->header_exts);
1415 g_ptr_array_foreach (to_add, (GFunc) add_item_to,
1416 payload->priv->header_exts);
1417 /* add extension information to srccaps */
1418 g_ptr_array_foreach (payload->priv->header_exts,
1419 (GFunc) add_header_ext_to_caps, srccaps);
1420 GST_OBJECT_UNLOCK (payload);
1423 g_ptr_array_unref (to_add);
1424 g_ptr_array_unref (to_remove);
1425 g_ptr_array_unref (header_exts);
1428 GST_DEBUG_OBJECT (payload, "configuring caps %" GST_PTR_FORMAT, srccaps);
1431 res = gst_pad_set_caps (GST_RTP_BASE_PAYLOAD_SRCPAD (payload), srccaps);
1432 gst_caps_unref (srccaps);
1433 gst_caps_unref (templ);
1438 gst_pad_mark_reconfigure (GST_RTP_BASE_PAYLOAD_SRCPAD (payload));
1444 * gst_rtp_base_payload_is_filled:
1445 * @payload: a #GstRTPBasePayload
1446 * @size: the size of the packet
1447 * @duration: the duration of the packet
1449 * Check if the packet with @size and @duration would exceed the configured
1452 * Returns: %TRUE if the packet of @size and @duration would exceed the
1453 * configured MTU or max_ptime.
1456 gst_rtp_base_payload_is_filled (GstRTPBasePayload * payload,
1457 guint size, GstClockTime duration)
1459 if (size > payload->mtu)
1462 if (payload->max_ptime != -1 && duration >= payload->max_ptime)
1470 GstRTPBasePayload *payload;
1481 find_timestamp (GstBuffer ** buffer, guint idx, gpointer user_data)
1483 HeaderData *data = user_data;
1484 data->dts = GST_BUFFER_DTS (*buffer);
1485 data->pts = GST_BUFFER_PTS (*buffer);
1486 data->offset = GST_BUFFER_OFFSET (*buffer);
1488 /* stop when we find a timestamp. We take whatever offset is associated with
1489 * the timestamp (if any) to do perfect timestamps when we need to. */
1490 if (data->pts != -1)
1497 gst_rtp_base_payload_add_extension (GstRTPBasePayload * payload,
1498 GstRTPHeaderExtension * ext)
1500 g_return_if_fail (GST_IS_RTP_HEADER_EXTENSION (ext));
1501 g_return_if_fail (gst_rtp_header_extension_get_id (ext) > 0);
1503 /* XXX: check for duplicate ids? */
1504 GST_OBJECT_LOCK (payload);
1505 g_ptr_array_add (payload->priv->header_exts, gst_object_ref (ext));
1506 gst_pad_mark_reconfigure (GST_RTP_BASE_PAYLOAD_SRCPAD (payload));
1507 GST_OBJECT_UNLOCK (payload);
1511 gst_rtp_base_payload_clear_extensions (GstRTPBasePayload * payload)
1513 GST_OBJECT_LOCK (payload);
1514 g_ptr_array_set_size (payload->priv->header_exts, 0);
1515 GST_OBJECT_UNLOCK (payload);
1520 GstRTPBasePayload *payload;
1521 GstRTPHeaderExtensionFlags flags;
1524 gsize allocated_size;
1526 gsize hdr_unit_size;
1531 determine_header_extension_flags_size (GstRTPHeaderExtension * ext,
1534 HeaderExt *hdr = user_data;
1538 hdr->flags &= gst_rtp_header_extension_get_supported_flags (ext);
1540 gst_rtp_header_extension_get_max_size (ext,
1541 hdr->payload->priv->input_meta_buffer);
1543 if (max_size > RTP_HEADER_EXT_ONE_BYTE_MAX_SIZE)
1544 hdr->flags &= ~GST_RTP_HEADER_EXTENSION_ONE_BYTE;
1545 if (max_size > RTP_HEADER_EXT_TWO_BYTE_MAX_SIZE)
1546 hdr->flags &= ~GST_RTP_HEADER_EXTENSION_TWO_BYTE;
1548 ext_id = gst_rtp_header_extension_get_id (ext);
1549 if (ext_id > RTP_HEADER_EXT_ONE_BYTE_MAX_ID)
1550 hdr->flags &= ~GST_RTP_HEADER_EXTENSION_ONE_BYTE;
1551 if (ext_id > RTP_HEADER_EXT_TWO_BYTE_MAX_ID)
1552 hdr->flags &= ~GST_RTP_HEADER_EXTENSION_TWO_BYTE;
1554 hdr->allocated_size += max_size;
1558 write_header_extension (GstRTPHeaderExtension * ext, gpointer user_data)
1560 HeaderExt *hdr = user_data;
1562 hdr->allocated_size - hdr->written_size - hdr->hdr_unit_size;
1563 gsize offset = hdr->written_size + hdr->hdr_unit_size;
1570 written = gst_rtp_header_extension_write (ext,
1571 hdr->payload->priv->input_meta_buffer, hdr->flags, hdr->output,
1572 &hdr->data[offset], remaining);
1575 /* extension wrote no data */
1577 } else if (written < 0) {
1578 GST_WARNING_OBJECT (hdr->payload, "%s failed to write extension data",
1579 GST_OBJECT_NAME (ext));
1581 } else if (written > remaining) {
1582 /* wrote too much! */
1583 g_error ("Overflow detected writing rtp header extensions. One of the "
1584 "instances likely did not report a large enough maximum size. "
1585 "Memory corruption has occured. Aborting");
1589 ext_id = gst_rtp_header_extension_get_id (ext);
1591 /* move to the beginning of the extension header */
1592 offset -= hdr->hdr_unit_size;
1594 /* write extension header */
1595 if (hdr->flags & GST_RTP_HEADER_EXTENSION_ONE_BYTE) {
1596 if (written > RTP_HEADER_EXT_ONE_BYTE_MAX_SIZE) {
1597 g_critical ("Amount of data written by %s is larger than allowed with "
1598 "a one byte header.", GST_OBJECT_NAME (ext));
1602 hdr->data[offset] = ((ext_id & 0x0F) << 4) | ((written - 1) & 0x0F);
1603 } else if (hdr->flags & GST_RTP_HEADER_EXTENSION_TWO_BYTE) {
1604 if (written > RTP_HEADER_EXT_TWO_BYTE_MAX_SIZE) {
1605 g_critical ("Amount of data written by %s is larger than allowed with "
1606 "a two byte header.", GST_OBJECT_NAME (ext));
1610 hdr->data[offset] = ext_id & 0xFF;
1611 hdr->data[offset + 1] = written & 0xFF;
1613 g_critical ("Don't know how to write extension data with flags 0x%x!",
1618 hdr->written_size += written + hdr->hdr_unit_size;
1628 set_headers (GstBuffer ** buffer, guint idx, gpointer user_data)
1630 HeaderData *data = user_data;
1631 HeaderExt hdrext = { NULL, };
1632 GstRTPBuffer rtp = { NULL, };
1634 if (!gst_rtp_buffer_map (*buffer, GST_MAP_WRITE, &rtp))
1637 gst_rtp_buffer_set_ssrc (&rtp, data->ssrc);
1638 gst_rtp_buffer_set_payload_type (&rtp, data->pt);
1639 gst_rtp_buffer_set_seq (&rtp, data->seqnum);
1640 gst_rtp_buffer_set_timestamp (&rtp, data->rtptime);
1642 GST_OBJECT_LOCK (data->payload);
1643 if (data->payload->priv->header_exts->len > 0) {
1646 guint16 bit_pattern;
1648 /* write header extensions */
1649 hdrext.payload = data->payload;
1650 hdrext.output = *buffer;
1651 /* XXX: pre-calculate these flags and sizes? */
1653 GST_RTP_HEADER_EXTENSION_ONE_BYTE | GST_RTP_HEADER_EXTENSION_TWO_BYTE;
1654 g_ptr_array_foreach (data->payload->priv->header_exts,
1655 (GFunc) determine_header_extension_flags_size, &hdrext);
1656 hdrext.hdr_unit_size = 0;
1657 if (hdrext.flags & GST_RTP_HEADER_EXTENSION_ONE_BYTE) {
1658 /* prefer the one byte header */
1659 hdrext.hdr_unit_size = 1;
1660 /* TODO: support mixed size writing modes, i.e. RFC8285 */
1661 hdrext.flags &= ~GST_RTP_HEADER_EXTENSION_TWO_BYTE;
1662 bit_pattern = 0xBEDE;
1663 } else if (hdrext.flags & GST_RTP_HEADER_EXTENSION_TWO_BYTE) {
1664 hdrext.hdr_unit_size = 2;
1665 bit_pattern = 0x1000;
1667 goto unsupported_flags;
1671 hdrext.hdr_unit_size * data->payload->priv->header_exts->len +
1672 hdrext.allocated_size;
1673 wordlen = extlen / 4 + ((extlen % 4) ? 1 : 0);
1675 /* XXX: do we need to add to any existing extension data instead of
1676 * overwriting everything? */
1677 gst_rtp_buffer_set_extension_data (&rtp, bit_pattern, wordlen);
1678 gst_rtp_buffer_get_extension_data (&rtp, NULL, (gpointer) & hdrext.data,
1681 /* from 32-bit words to bytes */
1682 hdrext.allocated_size = wordlen * 4;
1684 g_ptr_array_foreach (data->payload->priv->header_exts,
1685 (GFunc) write_header_extension, &hdrext);
1687 wordlen = hdrext.written_size / 4 + ((hdrext.written_size % 4) ? 1 : 0);
1688 gst_rtp_buffer_set_extension_data (&rtp, bit_pattern, wordlen);
1690 GST_OBJECT_UNLOCK (data->payload);
1691 gst_rtp_buffer_unmap (&rtp);
1693 /* increment the seqnum for each buffer */
1700 GST_ERROR ("failed to map buffer %p", *buffer);
1706 GST_OBJECT_UNLOCK (data->payload);
1707 gst_rtp_buffer_unmap (&rtp);
1708 GST_ERROR ("Cannot add rtp header extensions with mixed header types");
1714 foreach_metadata_drop (GstBuffer * buffer, GstMeta ** meta, gpointer user_data)
1716 GType drop_api_type = (GType) user_data;
1717 const GstMetaInfo *info = (*meta)->info;
1719 if (info->api == drop_api_type)
1726 filter_meta (GstBuffer ** buffer, guint idx, gpointer user_data)
1728 return gst_buffer_foreach_meta (*buffer, foreach_metadata_drop,
1729 (gpointer) GST_RTP_SOURCE_META_API_TYPE);
1732 /* Updates the SSRC, payload type, seqnum and timestamp of the RTP buffer
1733 * before the buffer is pushed. */
1734 static GstFlowReturn
1735 gst_rtp_base_payload_prepare_push (GstRTPBasePayload * payload,
1736 gpointer obj, gboolean is_list)
1738 GstRTPBasePayloadPrivate *priv;
1741 if (payload->clock_rate == 0)
1744 priv = payload->priv;
1746 /* update first, so that the property is set to the last
1748 payload->seqnum = priv->next_seqnum;
1750 /* fill in the fields we want to set on all headers */
1751 data.payload = payload;
1752 data.seqnum = payload->seqnum;
1753 data.ssrc = payload->current_ssrc;
1754 data.pt = payload->pt;
1756 /* find the first buffer with a timestamp */
1760 data.offset = GST_BUFFER_OFFSET_NONE;
1761 gst_buffer_list_foreach (GST_BUFFER_LIST_CAST (obj), find_timestamp, &data);
1763 data.dts = GST_BUFFER_DTS (GST_BUFFER_CAST (obj));
1764 data.pts = GST_BUFFER_PTS (GST_BUFFER_CAST (obj));
1765 data.offset = GST_BUFFER_OFFSET (GST_BUFFER_CAST (obj));
1768 /* convert to RTP time */
1769 if (priv->perfect_rtptime && data.offset != GST_BUFFER_OFFSET_NONE &&
1770 priv->base_offset != GST_BUFFER_OFFSET_NONE) {
1771 /* generate perfect RTP time by adding together the base timestamp, the
1772 * running time of the first buffer and difference between the offset of the
1773 * first buffer and the offset of the current buffer. */
1774 guint64 offset = data.offset - priv->base_offset;
1775 data.rtptime = payload->ts_base + priv->base_rtime_hz + offset;
1777 GST_LOG_OBJECT (payload,
1778 "Using offset %" G_GUINT64_FORMAT " for RTP timestamp", data.offset);
1780 /* store buffer's running time */
1781 GST_LOG_OBJECT (payload,
1782 "setting running-time to %" G_GUINT64_FORMAT,
1783 data.offset - priv->base_offset);
1784 priv->running_time = priv->base_rtime + data.offset - priv->base_offset;
1785 } else if (GST_CLOCK_TIME_IS_VALID (data.pts)) {
1789 /* no offset, use the gstreamer pts */
1790 if (priv->onvif_no_rate_control || !priv->scale_rtptime)
1791 rtime_ns = gst_segment_to_stream_time (&payload->segment,
1792 GST_FORMAT_TIME, data.pts);
1795 gst_segment_to_running_time (&payload->segment, GST_FORMAT_TIME,
1798 if (!GST_CLOCK_TIME_IS_VALID (rtime_ns)) {
1799 GST_LOG_OBJECT (payload, "Clipped pts, using base RTP timestamp");
1802 GST_LOG_OBJECT (payload,
1803 "Using running_time %" GST_TIME_FORMAT " for RTP timestamp",
1804 GST_TIME_ARGS (rtime_ns));
1806 gst_util_uint64_scale_int (rtime_ns, payload->clock_rate, GST_SECOND);
1807 priv->base_offset = data.offset;
1808 priv->base_rtime_hz = rtime_hz;
1811 /* add running_time in clock-rate units to the base timestamp */
1812 data.rtptime = payload->ts_base + rtime_hz;
1814 /* store buffer's running time */
1815 if (priv->perfect_rtptime) {
1816 GST_LOG_OBJECT (payload,
1817 "setting running-time to %" G_GUINT64_FORMAT, rtime_hz);
1818 priv->running_time = rtime_hz;
1820 GST_LOG_OBJECT (payload,
1821 "setting running-time to %" GST_TIME_FORMAT,
1822 GST_TIME_ARGS (rtime_ns));
1823 priv->running_time = rtime_ns;
1826 GST_LOG_OBJECT (payload,
1827 "Using previous RTP timestamp %" G_GUINT32_FORMAT, payload->timestamp);
1828 /* no timestamp to convert, take previous timestamp */
1829 data.rtptime = payload->timestamp;
1832 /* set ssrc, payload type, seq number, caps and rtptime */
1833 /* remove unwanted meta */
1835 gst_buffer_list_foreach (GST_BUFFER_LIST_CAST (obj), set_headers, &data);
1836 gst_buffer_list_foreach (GST_BUFFER_LIST_CAST (obj), filter_meta, NULL);
1837 /* sequence number has increased more if this was a buffer list */
1838 payload->seqnum = data.seqnum - 1;
1840 GstBuffer *buf = GST_BUFFER_CAST (obj);
1841 set_headers (&buf, 0, &data);
1842 filter_meta (&buf, 0, NULL);
1845 priv->next_seqnum = data.seqnum;
1846 payload->timestamp = data.rtptime;
1848 GST_LOG_OBJECT (payload, "Preparing to push %s with size %"
1849 G_GSIZE_FORMAT ", seq=%d, rtptime=%u, pts %" GST_TIME_FORMAT,
1850 (is_list) ? "list" : "packet",
1851 (is_list) ? gst_buffer_list_length (GST_BUFFER_LIST_CAST (obj)) :
1852 gst_buffer_get_size (GST_BUFFER (obj)),
1853 payload->seqnum, data.rtptime, GST_TIME_ARGS (data.pts));
1855 if (g_atomic_int_compare_and_exchange (&payload->priv->
1856 notified_first_timestamp, 1, 0)) {
1857 g_object_notify (G_OBJECT (payload), "timestamp");
1858 g_object_notify (G_OBJECT (payload), "seqnum");
1866 GST_ELEMENT_ERROR (payload, STREAM, NOT_IMPLEMENTED, (NULL),
1867 ("subclass did not specify clock-rate"));
1868 return GST_FLOW_ERROR;
1873 * gst_rtp_base_payload_push_list:
1874 * @payload: a #GstRTPBasePayload
1875 * @list: a #GstBufferList
1877 * Push @list to the peer element of the payloader. The SSRC, payload type,
1878 * seqnum and timestamp of the RTP buffer will be updated first.
1880 * This function takes ownership of @list.
1882 * Returns: a #GstFlowReturn.
1885 gst_rtp_base_payload_push_list (GstRTPBasePayload * payload,
1886 GstBufferList * list)
1890 res = gst_rtp_base_payload_prepare_push (payload, list, TRUE);
1892 if (G_LIKELY (res == GST_FLOW_OK)) {
1893 if (G_UNLIKELY (payload->priv->pending_segment)) {
1894 gst_pad_push_event (payload->srcpad, payload->priv->pending_segment);
1895 payload->priv->pending_segment = FALSE;
1896 payload->priv->delay_segment = FALSE;
1898 res = gst_pad_push_list (payload->srcpad, list);
1900 gst_buffer_list_unref (list);
1907 * gst_rtp_base_payload_push:
1908 * @payload: a #GstRTPBasePayload
1909 * @buffer: a #GstBuffer
1911 * Push @buffer to the peer element of the payloader. The SSRC, payload type,
1912 * seqnum and timestamp of the RTP buffer will be updated first.
1914 * This function takes ownership of @buffer.
1916 * Returns: a #GstFlowReturn.
1919 gst_rtp_base_payload_push (GstRTPBasePayload * payload, GstBuffer * buffer)
1923 res = gst_rtp_base_payload_prepare_push (payload, buffer, FALSE);
1925 if (G_LIKELY (res == GST_FLOW_OK)) {
1926 if (G_UNLIKELY (payload->priv->pending_segment)) {
1927 gst_pad_push_event (payload->srcpad, payload->priv->pending_segment);
1928 payload->priv->pending_segment = FALSE;
1929 payload->priv->delay_segment = FALSE;
1931 res = gst_pad_push (payload->srcpad, buffer);
1933 gst_buffer_unref (buffer);
1940 * gst_rtp_base_payload_allocate_output_buffer:
1941 * @payload: a #GstRTPBasePayload
1942 * @payload_len: the length of the payload
1943 * @pad_len: the amount of padding
1944 * @csrc_count: the minimum number of CSRC entries
1946 * Allocate a new #GstBuffer with enough data to hold an RTP packet with
1947 * minimum @csrc_count CSRCs, a payload length of @payload_len and padding of
1948 * @pad_len. If @payload has #GstRTPBasePayload:source-info %TRUE additional
1949 * CSRCs may be allocated and filled with RTP source information.
1951 * Returns: A newly allocated buffer that can hold an RTP packet with given
1957 gst_rtp_base_payload_allocate_output_buffer (GstRTPBasePayload * payload,
1958 guint payload_len, guint8 pad_len, guint8 csrc_count)
1960 GstBuffer *buffer = NULL;
1962 if (payload->priv->input_meta_buffer != NULL) {
1963 GstRTPSourceMeta *meta =
1964 gst_buffer_get_rtp_source_meta (payload->priv->input_meta_buffer);
1966 guint total_csrc_count, idx, i;
1967 GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
1969 total_csrc_count = csrc_count + meta->csrc_count +
1970 (meta->ssrc_valid ? 1 : 0);
1971 total_csrc_count = MIN (total_csrc_count, 15);
1972 buffer = gst_rtp_buffer_new_allocate (payload_len, pad_len,
1975 gst_rtp_buffer_map (buffer, GST_MAP_READWRITE, &rtp);
1977 /* Skip CSRC fields requested by derived class and fill CSRCs from meta.
1978 * Finally append the SSRC as a new CSRC. */
1980 for (i = 0; i < meta->csrc_count && idx < 15; i++, idx++)
1981 gst_rtp_buffer_set_csrc (&rtp, idx, meta->csrc[i]);
1982 if (meta->ssrc_valid && idx < 15)
1983 gst_rtp_buffer_set_csrc (&rtp, idx, meta->ssrc);
1985 gst_rtp_buffer_unmap (&rtp);
1990 buffer = gst_rtp_buffer_new_allocate (payload_len, pad_len, csrc_count);
1995 static GstStructure *
1996 gst_rtp_base_payload_create_stats (GstRTPBasePayload * rtpbasepayload)
1998 GstRTPBasePayloadPrivate *priv;
2001 priv = rtpbasepayload->priv;
2003 s = gst_structure_new ("application/x-rtp-payload-stats",
2004 "clock-rate", G_TYPE_UINT, (guint) rtpbasepayload->clock_rate,
2005 "running-time", G_TYPE_UINT64, priv->running_time,
2006 "seqnum", G_TYPE_UINT, (guint) rtpbasepayload->seqnum,
2007 "timestamp", G_TYPE_UINT, (guint) rtpbasepayload->timestamp,
2008 "ssrc", G_TYPE_UINT, rtpbasepayload->current_ssrc,
2009 "pt", G_TYPE_UINT, rtpbasepayload->pt,
2010 "seqnum-offset", G_TYPE_UINT, (guint) rtpbasepayload->seqnum_base,
2011 "timestamp-offset", G_TYPE_UINT, (guint) rtpbasepayload->ts_base, NULL);
2017 gst_rtp_base_payload_set_property (GObject * object, guint prop_id,
2018 const GValue * value, GParamSpec * pspec)
2020 GstRTPBasePayload *rtpbasepayload;
2021 GstRTPBasePayloadPrivate *priv;
2024 rtpbasepayload = GST_RTP_BASE_PAYLOAD (object);
2025 priv = rtpbasepayload->priv;
2029 rtpbasepayload->mtu = g_value_get_uint (value);
2032 rtpbasepayload->pt = g_value_get_uint (value);
2033 priv->pt_set = TRUE;
2036 val = g_value_get_uint (value);
2037 rtpbasepayload->ssrc = val;
2038 priv->ssrc_random = FALSE;
2040 case PROP_TIMESTAMP_OFFSET:
2041 val = g_value_get_uint (value);
2042 rtpbasepayload->ts_offset = val;
2043 priv->ts_offset_random = FALSE;
2045 case PROP_SEQNUM_OFFSET:
2046 val = g_value_get_int (value);
2047 rtpbasepayload->seqnum_offset = val;
2048 priv->seqnum_offset_random = (val == -1);
2049 GST_DEBUG_OBJECT (rtpbasepayload, "seqnum offset 0x%04x, random %d",
2050 rtpbasepayload->seqnum_offset, priv->seqnum_offset_random);
2052 case PROP_MAX_PTIME:
2053 rtpbasepayload->priv->prop_max_ptime = g_value_get_int64 (value);
2054 update_max_ptime (rtpbasepayload);
2056 case PROP_MIN_PTIME:
2057 rtpbasepayload->min_ptime = g_value_get_int64 (value);
2059 case PROP_PERFECT_RTPTIME:
2060 priv->perfect_rtptime = g_value_get_boolean (value);
2062 case PROP_PTIME_MULTIPLE:
2063 rtpbasepayload->ptime_multiple = g_value_get_int64 (value);
2065 case PROP_SOURCE_INFO:
2066 gst_rtp_base_payload_set_source_info_enabled (rtpbasepayload,
2067 g_value_get_boolean (value));
2069 case PROP_ONVIF_NO_RATE_CONTROL:
2070 priv->onvif_no_rate_control = g_value_get_boolean (value);
2072 case PROP_SCALE_RTPTIME:
2073 priv->scale_rtptime = g_value_get_boolean (value);
2076 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2082 gst_rtp_base_payload_get_property (GObject * object, guint prop_id,
2083 GValue * value, GParamSpec * pspec)
2085 GstRTPBasePayload *rtpbasepayload;
2086 GstRTPBasePayloadPrivate *priv;
2088 rtpbasepayload = GST_RTP_BASE_PAYLOAD (object);
2089 priv = rtpbasepayload->priv;
2093 g_value_set_uint (value, rtpbasepayload->mtu);
2096 g_value_set_uint (value, rtpbasepayload->pt);
2099 if (priv->ssrc_random)
2100 g_value_set_uint (value, -1);
2102 g_value_set_uint (value, rtpbasepayload->ssrc);
2104 case PROP_TIMESTAMP_OFFSET:
2105 if (priv->ts_offset_random)
2106 g_value_set_uint (value, -1);
2108 g_value_set_uint (value, (guint32) rtpbasepayload->ts_offset);
2110 case PROP_SEQNUM_OFFSET:
2111 if (priv->seqnum_offset_random)
2112 g_value_set_int (value, -1);
2114 g_value_set_int (value, (guint16) rtpbasepayload->seqnum_offset);
2116 case PROP_MAX_PTIME:
2117 g_value_set_int64 (value, rtpbasepayload->max_ptime);
2119 case PROP_MIN_PTIME:
2120 g_value_set_int64 (value, rtpbasepayload->min_ptime);
2122 case PROP_TIMESTAMP:
2123 g_value_set_uint (value, rtpbasepayload->timestamp);
2126 g_value_set_uint (value, rtpbasepayload->seqnum);
2128 case PROP_PERFECT_RTPTIME:
2129 g_value_set_boolean (value, priv->perfect_rtptime);
2131 case PROP_PTIME_MULTIPLE:
2132 g_value_set_int64 (value, rtpbasepayload->ptime_multiple);
2135 g_value_take_boxed (value,
2136 gst_rtp_base_payload_create_stats (rtpbasepayload));
2138 case PROP_SOURCE_INFO:
2139 g_value_set_boolean (value,
2140 gst_rtp_base_payload_is_source_info_enabled (rtpbasepayload));
2142 case PROP_ONVIF_NO_RATE_CONTROL:
2143 g_value_set_boolean (value, priv->onvif_no_rate_control);
2145 case PROP_SCALE_RTPTIME:
2146 g_value_set_boolean (value, priv->scale_rtptime);
2149 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2154 static GstStateChangeReturn
2155 gst_rtp_base_payload_change_state (GstElement * element,
2156 GstStateChange transition)
2158 GstRTPBasePayload *rtpbasepayload;
2159 GstRTPBasePayloadPrivate *priv;
2160 GstStateChangeReturn ret;
2162 rtpbasepayload = GST_RTP_BASE_PAYLOAD (element);
2163 priv = rtpbasepayload->priv;
2165 switch (transition) {
2166 case GST_STATE_CHANGE_NULL_TO_READY:
2168 case GST_STATE_CHANGE_READY_TO_PAUSED:
2169 gst_segment_init (&rtpbasepayload->segment, GST_FORMAT_UNDEFINED);
2170 rtpbasepayload->priv->delay_segment = TRUE;
2171 gst_event_replace (&rtpbasepayload->priv->pending_segment, NULL);
2173 if (priv->seqnum_offset_random)
2174 rtpbasepayload->seqnum_base = g_random_int_range (0, G_MAXINT16);
2176 rtpbasepayload->seqnum_base = rtpbasepayload->seqnum_offset;
2177 priv->next_seqnum = rtpbasepayload->seqnum_base;
2178 rtpbasepayload->seqnum = rtpbasepayload->seqnum_base;
2180 if (priv->ssrc_random)
2181 rtpbasepayload->current_ssrc = g_random_int ();
2183 rtpbasepayload->current_ssrc = rtpbasepayload->ssrc;
2185 if (priv->ts_offset_random)
2186 rtpbasepayload->ts_base = g_random_int ();
2188 rtpbasepayload->ts_base = rtpbasepayload->ts_offset;
2189 rtpbasepayload->timestamp = rtpbasepayload->ts_base;
2190 priv->running_time = DEFAULT_RUNNING_TIME;
2191 g_atomic_int_set (&rtpbasepayload->priv->notified_first_timestamp, 1);
2192 priv->base_offset = GST_BUFFER_OFFSET_NONE;
2193 priv->negotiated = FALSE;
2194 gst_caps_replace (&rtpbasepayload->priv->subclass_srccaps, NULL);
2195 gst_caps_replace (&rtpbasepayload->priv->sinkcaps, NULL);
2201 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
2203 switch (transition) {
2204 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
2205 g_atomic_int_set (&rtpbasepayload->priv->notified_first_timestamp, 1);
2207 case GST_STATE_CHANGE_PAUSED_TO_READY:
2208 gst_event_replace (&rtpbasepayload->priv->pending_segment, NULL);
2217 * gst_rtp_base_payload_set_source_info_enabled:
2218 * @payload: a #GstRTPBasePayload
2219 * @enable: whether to add contributing sources to RTP packets
2221 * Enable or disable adding contributing sources to RTP packets from
2222 * #GstRTPSourceMeta.
2227 gst_rtp_base_payload_set_source_info_enabled (GstRTPBasePayload * payload,
2230 payload->priv->source_info = enable;
2234 * gst_rtp_base_payload_is_source_info_enabled:
2235 * @payload: a #GstRTPBasePayload
2237 * Queries whether the payloader will add contributing sources (CSRCs) to the
2238 * RTP header from #GstRTPSourceMeta.
2240 * Returns: %TRUE if source-info is enabled.
2245 gst_rtp_base_payload_is_source_info_enabled (GstRTPBasePayload * payload)
2247 return payload->priv->source_info;
2252 * gst_rtp_base_payload_get_source_count:
2253 * @payload: a #GstRTPBasePayload
2254 * @buffer: (transfer none): a #GstBuffer, typically the buffer to payload
2256 * Count the total number of RTP sources found in the meta of @buffer, which
2257 * will be automically added by gst_rtp_base_payload_allocate_output_buffer().
2258 * If #GstRTPBasePayload:source-info is %FALSE the count will be 0.
2260 * Returns: The number of sources.
2265 gst_rtp_base_payload_get_source_count (GstRTPBasePayload * payload,
2270 g_return_val_if_fail (buffer != NULL, 0);
2272 if (gst_rtp_base_payload_is_source_info_enabled (payload)) {
2273 GstRTPSourceMeta *meta = gst_buffer_get_rtp_source_meta (buffer);
2275 count = gst_rtp_source_meta_get_source_count (meta);