2 * Copyright (C) <2006> Wim Taymans <wim.taymans@gmail.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 details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
26 #include <gst/rtp/gstrtpbuffer.h>
27 #include <gst/audio/audio.h>
30 #include "gstrtpvorbispay.h"
31 #include "gstrtputils.h"
33 GST_DEBUG_CATEGORY_STATIC (rtpvorbispay_debug);
34 #define GST_CAT_DEFAULT (rtpvorbispay_debug)
37 * http://www.rfc-editor.org/rfc/rfc5215.txt
40 static GstStaticPadTemplate gst_rtp_vorbis_pay_src_template =
41 GST_STATIC_PAD_TEMPLATE ("src",
44 GST_STATIC_CAPS ("application/x-rtp, "
45 "media = (string) \"audio\", "
46 "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
47 "clock-rate = (int) [1, MAX ], " "encoding-name = (string) \"VORBIS\""
48 /* All required parameters
50 * "encoding-params = (string) <num channels>"
51 * "configuration = (string) ANY"
56 static GstStaticPadTemplate gst_rtp_vorbis_pay_sink_template =
57 GST_STATIC_PAD_TEMPLATE ("sink",
60 GST_STATIC_CAPS ("audio/x-vorbis")
63 #define DEFAULT_CONFIG_INTERVAL 0
71 #define gst_rtp_vorbis_pay_parent_class parent_class
72 G_DEFINE_TYPE (GstRtpVorbisPay, gst_rtp_vorbis_pay, GST_TYPE_RTP_BASE_PAYLOAD);
74 static gboolean gst_rtp_vorbis_pay_setcaps (GstRTPBasePayload * basepayload,
76 static GstStateChangeReturn gst_rtp_vorbis_pay_change_state (GstElement *
77 element, GstStateChange transition);
78 static GstFlowReturn gst_rtp_vorbis_pay_handle_buffer (GstRTPBasePayload * pad,
80 static gboolean gst_rtp_vorbis_pay_sink_event (GstRTPBasePayload * payload,
83 static gboolean gst_rtp_vorbis_pay_parse_id (GstRTPBasePayload * basepayload,
84 guint8 * data, guint size);
85 static gboolean gst_rtp_vorbis_pay_finish_headers (GstRTPBasePayload *
88 static void gst_rtp_vorbis_pay_set_property (GObject * object, guint prop_id,
89 const GValue * value, GParamSpec * pspec);
90 static void gst_rtp_vorbis_pay_get_property (GObject * object, guint prop_id,
91 GValue * value, GParamSpec * pspec);
94 gst_rtp_vorbis_pay_class_init (GstRtpVorbisPayClass * klass)
96 GObjectClass *gobject_class;
97 GstElementClass *gstelement_class;
98 GstRTPBasePayloadClass *gstrtpbasepayload_class;
100 gobject_class = (GObjectClass *) klass;
101 gstelement_class = (GstElementClass *) klass;
102 gstrtpbasepayload_class = (GstRTPBasePayloadClass *) klass;
104 gstelement_class->change_state = gst_rtp_vorbis_pay_change_state;
106 gstrtpbasepayload_class->set_caps = gst_rtp_vorbis_pay_setcaps;
107 gstrtpbasepayload_class->handle_buffer = gst_rtp_vorbis_pay_handle_buffer;
108 gstrtpbasepayload_class->sink_event = gst_rtp_vorbis_pay_sink_event;
110 gobject_class->set_property = gst_rtp_vorbis_pay_set_property;
111 gobject_class->get_property = gst_rtp_vorbis_pay_get_property;
113 gst_element_class_add_static_pad_template (gstelement_class,
114 &gst_rtp_vorbis_pay_src_template);
115 gst_element_class_add_static_pad_template (gstelement_class,
116 &gst_rtp_vorbis_pay_sink_template);
118 gst_element_class_set_static_metadata (gstelement_class,
119 "RTP Vorbis payloader",
120 "Codec/Payloader/Network/RTP",
121 "Payload-encode Vorbis audio into RTP packets (RFC 5215)",
122 "Wim Taymans <wim.taymans@gmail.com>");
124 GST_DEBUG_CATEGORY_INIT (rtpvorbispay_debug, "rtpvorbispay", 0,
125 "Vorbis RTP Payloader");
127 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CONFIG_INTERVAL,
128 g_param_spec_uint ("config-interval", "Config Send Interval",
129 "Send Config Insertion Interval in seconds (configuration headers "
130 "will be multiplexed in the data stream when detected.) (0 = disabled)",
131 0, 3600, DEFAULT_CONFIG_INTERVAL,
132 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)
137 gst_rtp_vorbis_pay_init (GstRtpVorbisPay * rtpvorbispay)
139 rtpvorbispay->last_config = GST_CLOCK_TIME_NONE;
143 gst_rtp_vorbis_pay_clear_packet (GstRtpVorbisPay * rtpvorbispay)
145 if (rtpvorbispay->packet)
146 gst_buffer_unref (rtpvorbispay->packet);
147 rtpvorbispay->packet = NULL;
148 g_list_free_full (rtpvorbispay->packet_buffers,
149 (GDestroyNotify) gst_buffer_unref);
150 rtpvorbispay->packet_buffers = NULL;
154 gst_rtp_vorbis_pay_cleanup (GstRtpVorbisPay * rtpvorbispay)
156 gst_rtp_vorbis_pay_clear_packet (rtpvorbispay);
157 g_list_free_full (rtpvorbispay->headers, (GDestroyNotify) gst_buffer_unref);
158 rtpvorbispay->headers = NULL;
159 g_free (rtpvorbispay->config_data);
160 rtpvorbispay->config_data = NULL;
161 rtpvorbispay->last_config = GST_CLOCK_TIME_NONE;
165 gst_rtp_vorbis_pay_setcaps (GstRTPBasePayload * basepayload, GstCaps * caps)
167 GstRtpVorbisPay *rtpvorbispay;
174 rtpvorbispay = GST_RTP_VORBIS_PAY (basepayload);
176 s = gst_caps_get_structure (caps, 0);
178 rtpvorbispay->need_headers = TRUE;
180 if ((array = gst_structure_get_value (s, "streamheader")) == NULL)
183 if (G_VALUE_TYPE (array) != GST_TYPE_ARRAY)
186 if ((asize = gst_value_array_get_size (array)) < 3)
189 for (i = 0; i < asize; i++) {
192 value = gst_value_array_get_value (array, i);
193 if ((buf = gst_value_get_buffer (value)) == NULL)
196 gst_buffer_map (buf, &map, GST_MAP_READ);
198 goto invalid_streamheader;
200 /* no data packets allowed */
201 if ((map.data[0] & 1) == 0)
202 goto invalid_streamheader;
204 /* we need packets with id 1, 3, 5 */
205 if (map.data[0] != (i * 2) + 1)
206 goto invalid_streamheader;
209 /* identification, we need to parse this in order to get the clock rate. */
210 if (G_UNLIKELY (!gst_rtp_vorbis_pay_parse_id (basepayload, map.data,
212 goto parse_id_failed;
214 GST_DEBUG_OBJECT (rtpvorbispay, "collecting header %d", i);
215 rtpvorbispay->headers =
216 g_list_append (rtpvorbispay->headers, gst_buffer_ref (buf));
217 gst_buffer_unmap (buf, &map);
219 if (!gst_rtp_vorbis_pay_finish_headers (basepayload))
228 GST_WARNING_OBJECT (rtpvorbispay, "streamheader with null buffer received");
231 invalid_streamheader:
233 GST_WARNING_OBJECT (rtpvorbispay, "unable to parse initial header");
234 gst_buffer_unmap (buf, &map);
239 GST_WARNING_OBJECT (rtpvorbispay, "unable to parse initial header");
240 gst_buffer_unmap (buf, &map);
245 GST_WARNING_OBJECT (rtpvorbispay, "unable to finish headers");
251 gst_rtp_vorbis_pay_reset_packet (GstRtpVorbisPay * rtpvorbispay, guint8 VDT)
254 GstRTPBuffer rtp = { NULL };
256 GST_LOG_OBJECT (rtpvorbispay, "reset packet");
258 rtpvorbispay->payload_pos = 4;
259 gst_rtp_buffer_map (rtpvorbispay->packet, GST_MAP_READ, &rtp);
260 payload_len = gst_rtp_buffer_get_payload_len (&rtp);
261 gst_rtp_buffer_unmap (&rtp);
262 rtpvorbispay->payload_left = payload_len - 4;
263 rtpvorbispay->payload_duration = 0;
264 rtpvorbispay->payload_F = 0;
265 rtpvorbispay->payload_VDT = VDT;
266 rtpvorbispay->payload_pkts = 0;
270 gst_rtp_vorbis_pay_init_packet (GstRtpVorbisPay * rtpvorbispay, guint8 VDT,
271 GstClockTime timestamp)
275 GST_LOG_OBJECT (rtpvorbispay, "starting new packet, VDT: %d", VDT);
277 gst_rtp_vorbis_pay_clear_packet (rtpvorbispay);
279 /* new packet allocate max packet size */
280 len = gst_rtp_buffer_calc_payload_len (GST_RTP_BASE_PAYLOAD_MTU
281 (rtpvorbispay), 0, 0);
282 rtpvorbispay->packet =
283 gst_rtp_base_payload_allocate_output_buffer (GST_RTP_BASE_PAYLOAD
284 (rtpvorbispay), len, 0, 0);
285 gst_rtp_vorbis_pay_reset_packet (rtpvorbispay, VDT);
287 GST_BUFFER_PTS (rtpvorbispay->packet) = timestamp;
291 gst_rtp_vorbis_pay_flush_packet (GstRtpVorbisPay * rtpvorbispay)
296 GstRTPBuffer rtp = { NULL };
299 /* check for empty packet */
300 if (!rtpvorbispay->packet || rtpvorbispay->payload_pos <= 4)
303 GST_LOG_OBJECT (rtpvorbispay, "flushing packet");
305 gst_rtp_buffer_map (rtpvorbispay->packet, GST_MAP_WRITE, &rtp);
308 payload = gst_rtp_buffer_get_payload (&rtp);
311 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
312 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
313 * | Ident | F |VDT|# pkts.|
314 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
316 * F: Fragment type (0=none, 1=start, 2=cont, 3=end)
317 * VDT: Vorbis data type (0=vorbis, 1=config, 2=comment, 3=reserved)
318 * pkts: number of packets.
320 payload[0] = (rtpvorbispay->payload_ident >> 16) & 0xff;
321 payload[1] = (rtpvorbispay->payload_ident >> 8) & 0xff;
322 payload[2] = (rtpvorbispay->payload_ident) & 0xff;
323 payload[3] = (rtpvorbispay->payload_F & 0x3) << 6 |
324 (rtpvorbispay->payload_VDT & 0x3) << 4 |
325 (rtpvorbispay->payload_pkts & 0xf);
327 gst_rtp_buffer_unmap (&rtp);
329 /* shrink the buffer size to the last written byte */
330 hlen = gst_rtp_buffer_calc_header_len (0);
331 gst_buffer_resize (rtpvorbispay->packet, 0, hlen + rtpvorbispay->payload_pos);
333 GST_BUFFER_DURATION (rtpvorbispay->packet) = rtpvorbispay->payload_duration;
335 for (l = g_list_last (rtpvorbispay->packet_buffers); l; l = l->prev) {
336 GstBuffer *buf = GST_BUFFER_CAST (l->data);
337 gst_rtp_copy_audio_meta (rtpvorbispay, rtpvorbispay->packet, buf);
338 gst_buffer_unref (buf);
340 g_list_free (rtpvorbispay->packet_buffers);
341 rtpvorbispay->packet_buffers = NULL;
343 /* push, this gives away our ref to the packet, so clear it. */
345 gst_rtp_base_payload_push (GST_RTP_BASE_PAYLOAD (rtpvorbispay),
346 rtpvorbispay->packet);
347 rtpvorbispay->packet = NULL;
353 gst_rtp_vorbis_pay_finish_headers (GstRTPBasePayload * basepayload)
355 GstRtpVorbisPay *rtpvorbispay = GST_RTP_VORBIS_PAY (basepayload);
357 guint length, size, n_headers, configlen, extralen;
358 gchar *cstr, *configuration;
359 guint8 *data, *config;
363 GST_DEBUG_OBJECT (rtpvorbispay, "finish headers");
365 if (!rtpvorbispay->headers)
368 /* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
369 * | Number of packed headers |
370 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
371 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
373 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
374 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
376 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
377 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
379 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
381 * We only construct a config containing 1 packed header like this:
384 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
385 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
386 * | Ident | length ..
387 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
388 * .. | n. of headers | length1 | length2 ..
389 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
390 * .. | Identification Header ..
391 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
392 * .................................................................
393 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
394 * .. | Comment Header ..
395 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
396 * .................................................................
397 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
398 * .. Comment Header |
399 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
401 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
402 * .................................................................
403 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
405 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
408 /* we need 4 bytes for the number of headers (which is always 1), 3 bytes for
409 * the ident, 2 bytes for length, 1 byte for n. of headers. */
410 size = 4 + 3 + 2 + 1;
412 /* count the size of the headers first and update the hash */
415 ident = fnv1_hash_32_new ();
417 for (walk = rtpvorbispay->headers; walk; walk = g_list_next (walk)) {
418 GstBuffer *buf = GST_BUFFER_CAST (walk->data);
422 bsize = gst_buffer_get_size (buf);
426 /* count number of bytes needed for length fields, we don't need this for
427 * the last header. */
428 if (g_list_next (walk)) {
436 gst_buffer_map (buf, &map, GST_MAP_READ);
437 ident = fnv1_hash_32_update (ident, map.data, map.size);
438 gst_buffer_unmap (buf, &map);
441 /* packet length is header size + packet length */
442 configlen = size + length;
443 config = data = g_malloc (configlen);
445 /* number of packed headers, we only pack 1 header */
451 ident = fnv1_hash_32_to_24 (ident);
452 rtpvorbispay->payload_ident = ident;
453 GST_DEBUG_OBJECT (rtpvorbispay, "ident 0x%08x", ident);
455 /* take lower 3 bytes */
456 data[4] = (ident >> 16) & 0xff;
457 data[5] = (ident >> 8) & 0xff;
458 data[6] = ident & 0xff;
460 /* store length of all vorbis headers */
461 data[7] = ((length) >> 8) & 0xff;
462 data[8] = (length) & 0xff;
464 /* store number of headers minus one. */
465 data[9] = n_headers - 1;
468 /* store length for each header */
469 for (walk = rtpvorbispay->headers; walk; walk = g_list_next (walk)) {
470 GstBuffer *buf = GST_BUFFER_CAST (walk->data);
471 guint bsize, size, temp;
474 /* only need to store the length when it's not the last header */
475 if (!g_list_next (walk))
478 bsize = gst_buffer_get_size (buf);
488 bsize = gst_buffer_get_size (buf);
489 /* write the size backwards */
493 data[size] = (bsize & 0x7f) | flag;
495 flag = 0x80; /* Flag bit on all bytes of the length except the last */
500 /* copy header data */
501 for (walk = rtpvorbispay->headers; walk; walk = g_list_next (walk)) {
502 GstBuffer *buf = GST_BUFFER_CAST (walk->data);
504 gst_buffer_extract (buf, 0, data, gst_buffer_get_size (buf));
505 data += gst_buffer_get_size (buf);
507 rtpvorbispay->need_headers = FALSE;
509 /* serialize to base64 */
510 configuration = g_base64_encode (config, configlen);
512 /* store for later re-sending */
513 g_free (rtpvorbispay->config_data);
514 rtpvorbispay->config_size = configlen - 4 - 3 - 2;
515 rtpvorbispay->config_data = g_malloc (rtpvorbispay->config_size);
516 rtpvorbispay->config_extra_len = extralen;
517 memcpy (rtpvorbispay->config_data, config + 4 + 3 + 2,
518 rtpvorbispay->config_size);
522 /* configure payloader settings */
523 cstr = g_strdup_printf ("%d", rtpvorbispay->channels);
524 gst_rtp_base_payload_set_options (basepayload, "audio", TRUE, "VORBIS",
527 gst_rtp_base_payload_set_outcaps (basepayload, "encoding-params",
528 G_TYPE_STRING, cstr, "configuration", G_TYPE_STRING, configuration, NULL);
530 g_free (configuration);
537 GST_DEBUG_OBJECT (rtpvorbispay, "finish headers");
543 gst_rtp_vorbis_pay_parse_id (GstRTPBasePayload * basepayload, guint8 * data,
546 GstRtpVorbisPay *rtpvorbispay = GST_RTP_VORBIS_PAY (basepayload);
548 gint32 rate, version;
550 if (G_UNLIKELY (size < 16))
553 if (G_UNLIKELY (memcmp (data, "\001vorbis", 7)))
557 if (G_UNLIKELY ((version = GST_READ_UINT32_LE (data)) != 0))
558 goto invalid_version;
561 if (G_UNLIKELY ((channels = *data++) < 1))
562 goto invalid_channels;
564 if (G_UNLIKELY ((rate = GST_READ_UINT32_LE (data)) < 1))
567 /* all fine, store the values */
568 rtpvorbispay->channels = channels;
569 rtpvorbispay->rate = rate;
576 GST_ELEMENT_ERROR (basepayload, STREAM, DECODE,
577 ("Identification packet is too short, need at least 16, got %d", size),
583 GST_ELEMENT_ERROR (basepayload, STREAM, DECODE,
584 ("Invalid header start in identification packet"), (NULL));
589 GST_ELEMENT_ERROR (basepayload, STREAM, DECODE,
590 ("Invalid version, expected 0, got %d", version), (NULL));
595 GST_ELEMENT_ERROR (basepayload, STREAM, DECODE,
596 ("Invalid rate %d", rate), (NULL));
601 GST_ELEMENT_ERROR (basepayload, STREAM, DECODE,
602 ("Invalid channels %d", channels), (NULL));
608 gst_rtp_vorbis_pay_payload_buffer (GstRtpVorbisPay * rtpvorbispay, guint8 VDT,
609 GstBuffer * buffer, guint8 * data, guint size, GstClockTime timestamp,
610 GstClockTime duration, guint not_in_length)
612 GstFlowReturn ret = GST_FLOW_OK;
615 GstClockTime newduration;
618 guint8 *ppos, *payload;
620 GstRTPBuffer rtp = { NULL };
622 /* size increases with packet length and 2 bytes size eader. */
623 newduration = rtpvorbispay->payload_duration;
624 if (duration != GST_CLOCK_TIME_NONE)
625 newduration += duration;
627 newsize = rtpvorbispay->payload_pos + 2 + size;
628 packet_len = gst_rtp_buffer_calc_packet_len (newsize, 0, 0);
630 /* check buffer filled against length and max latency */
631 flush = gst_rtp_base_payload_is_filled (GST_RTP_BASE_PAYLOAD (rtpvorbispay),
632 packet_len, newduration);
633 /* we can store up to 15 vorbis packets in one RTP packet. */
634 flush |= (rtpvorbispay->payload_pkts == 15);
635 /* flush if we have a new VDT */
636 if (rtpvorbispay->packet)
637 flush |= (rtpvorbispay->payload_VDT != VDT);
639 ret = gst_rtp_vorbis_pay_flush_packet (rtpvorbispay);
641 if (ret != GST_FLOW_OK)
644 /* create new packet if we must */
645 if (!rtpvorbispay->packet) {
646 gst_rtp_vorbis_pay_init_packet (rtpvorbispay, VDT, timestamp);
649 gst_rtp_buffer_map (rtpvorbispay->packet, GST_MAP_WRITE, &rtp);
650 payload = gst_rtp_buffer_get_payload (&rtp);
651 ppos = payload + rtpvorbispay->payload_pos;
654 /* put buffer in packet, it either fits completely or needs to be fragmented
655 * over multiple RTP packets. */
657 plen = MIN (rtpvorbispay->payload_left - 2, size);
659 GST_LOG_OBJECT (rtpvorbispay, "append %u bytes", plen);
661 /* data is copied in the payload with a 2 byte length header */
662 ppos[0] = ((plen - not_in_length) >> 8) & 0xff;
663 ppos[1] = ((plen - not_in_length) & 0xff);
665 memcpy (&ppos[2], data, plen);
668 if (!rtpvorbispay->packet_buffers
669 || rtpvorbispay->packet_buffers->data != (gpointer) buffer)
670 rtpvorbispay->packet_buffers =
671 g_list_prepend (rtpvorbispay->packet_buffers,
672 gst_buffer_ref (buffer));
676 for (l = rtpvorbispay->headers; l; l = l->next)
677 rtpvorbispay->packet_buffers =
678 g_list_prepend (rtpvorbispay->packet_buffers,
679 gst_buffer_ref (l->data));
682 /* only first (only) configuration cuts length field */
683 /* NOTE: spec (if any) is not clear on this ... */
689 rtpvorbispay->payload_pos += plen + 2;
690 rtpvorbispay->payload_left -= plen + 2;
694 /* last fragment, set F to 0x3. */
695 rtpvorbispay->payload_F = 0x3;
697 /* fragment continues, set F to 0x2. */
698 rtpvorbispay->payload_F = 0x2;
701 /* fragmented packet starts, set F to 0x1, mark ourselves as
703 rtpvorbispay->payload_F = 0x1;
708 gst_rtp_buffer_unmap (&rtp);
709 /* fragmented packets are always flushed and have ptks of 0 */
710 rtpvorbispay->payload_pkts = 0;
711 ret = gst_rtp_vorbis_pay_flush_packet (rtpvorbispay);
714 /* start new packet and get pointers. VDT stays the same. */
715 gst_rtp_vorbis_pay_init_packet (rtpvorbispay,
716 rtpvorbispay->payload_VDT, timestamp);
717 gst_rtp_buffer_map (rtpvorbispay->packet, GST_MAP_WRITE, &rtp);
718 payload = gst_rtp_buffer_get_payload (&rtp);
719 ppos = payload + rtpvorbispay->payload_pos;
722 /* unfragmented packet, update stats for next packet, size == 0 and we
723 * exit the while loop */
724 rtpvorbispay->payload_pkts++;
725 if (duration != GST_CLOCK_TIME_NONE)
726 rtpvorbispay->payload_duration += duration;
728 } while (size && ret == GST_FLOW_OK);
731 gst_rtp_buffer_unmap (&rtp);
739 gst_rtp_vorbis_pay_handle_buffer (GstRTPBasePayload * basepayload,
742 GstRtpVorbisPay *rtpvorbispay;
747 GstClockTime duration, timestamp;
750 rtpvorbispay = GST_RTP_VORBIS_PAY (basepayload);
752 gst_buffer_map (buffer, &map, GST_MAP_READ);
755 duration = GST_BUFFER_DURATION (buffer);
756 timestamp = GST_BUFFER_PTS (buffer);
758 GST_LOG_OBJECT (rtpvorbispay, "size %" G_GSIZE_FORMAT
759 ", duration %" GST_TIME_FORMAT, size, GST_TIME_ARGS (duration));
761 if (G_UNLIKELY (size < 1))
764 /* find packet type */
768 /* identification, we need to parse this in order to get the clock rate. */
769 if (G_UNLIKELY (!gst_rtp_vorbis_pay_parse_id (basepayload, data, size)))
770 goto parse_id_failed;
772 } else if (data[0] == 3) {
775 } else if (data[0] == 5) {
784 /* we need to collect the headers and construct a config string from them */
786 rtpvorbispay->need_headers = TRUE;
787 if (!rtpvorbispay->need_headers && VDT == 1) {
788 GST_INFO_OBJECT (rtpvorbispay, "getting new headers, replace existing");
789 g_list_free_full (rtpvorbispay->headers,
790 (GDestroyNotify) gst_buffer_unref);
791 rtpvorbispay->headers = NULL;
793 GST_DEBUG_OBJECT (rtpvorbispay, "collecting header");
794 /* append header to the list of headers, or replace
795 * if the same type of header was already in there.
797 * This prevents storing an infinite amount of e.g. comment headers, there
798 * must only be one */
799 gst_buffer_unmap (buffer, &map);
801 if (rtpvorbispay->headers) {
802 gboolean found = FALSE;
804 guint8 new_header_type;
806 gst_buffer_extract (buffer, 0, &new_header_type, 1);
808 for (l = rtpvorbispay->headers; l; l = l->next) {
809 GstBuffer *header = l->data;
812 if (gst_buffer_extract (header, 0, &header_type, 1)
813 && header_type == new_header_type) {
815 gst_buffer_unref (header);
821 rtpvorbispay->headers = g_list_append (rtpvorbispay->headers, buffer);
823 rtpvorbispay->headers = g_list_append (rtpvorbispay->headers, buffer);
828 } else if (rtpvorbispay->headers && rtpvorbispay->need_headers) {
829 if (!gst_rtp_vorbis_pay_finish_headers (basepayload))
833 /* there is a config request, see if we need to insert it */
834 if (rtpvorbispay->config_interval > 0 && rtpvorbispay->config_data) {
835 gboolean send_config = FALSE;
836 GstClockTime running_time =
837 gst_segment_to_running_time (&basepayload->segment, GST_FORMAT_TIME,
840 if (rtpvorbispay->last_config != -1) {
843 GST_LOG_OBJECT (rtpvorbispay,
844 "now %" GST_TIME_FORMAT ", last config %" GST_TIME_FORMAT,
845 GST_TIME_ARGS (running_time),
846 GST_TIME_ARGS (rtpvorbispay->last_config));
848 /* calculate diff between last config in milliseconds */
849 if (running_time > rtpvorbispay->last_config) {
850 diff = running_time - rtpvorbispay->last_config;
855 GST_DEBUG_OBJECT (rtpvorbispay,
856 "interval since last config %" GST_TIME_FORMAT, GST_TIME_ARGS (diff));
858 /* bigger than interval, queue config */
859 if (GST_TIME_AS_SECONDS (diff) >= rtpvorbispay->config_interval) {
860 GST_DEBUG_OBJECT (rtpvorbispay, "time to send config");
864 /* no known previous config time, send now */
865 GST_DEBUG_OBJECT (rtpvorbispay, "no previous config time, send now");
870 /* we need to send config now first */
871 /* different TDT type forces flush */
872 gst_rtp_vorbis_pay_payload_buffer (rtpvorbispay, 1,
873 NULL, rtpvorbispay->config_data, rtpvorbispay->config_size,
874 timestamp, GST_CLOCK_TIME_NONE, rtpvorbispay->config_extra_len);
876 if (running_time != -1) {
877 rtpvorbispay->last_config = running_time;
883 gst_rtp_vorbis_pay_payload_buffer (rtpvorbispay, VDT, buffer, data, size,
884 timestamp, duration, 0);
886 gst_buffer_unmap (buffer, &map);
887 gst_buffer_unref (buffer);
895 GST_ELEMENT_WARNING (rtpvorbispay, STREAM, DECODE,
896 ("Invalid packet size (1 < %" G_GSIZE_FORMAT ")", size), (NULL));
897 gst_buffer_unmap (buffer, &map);
898 gst_buffer_unref (buffer);
903 gst_buffer_unmap (buffer, &map);
904 gst_buffer_unref (buffer);
905 return GST_FLOW_ERROR;
909 GST_ELEMENT_WARNING (rtpvorbispay, STREAM, DECODE,
910 (NULL), ("Ignoring unknown header received"));
911 gst_buffer_unmap (buffer, &map);
912 gst_buffer_unref (buffer);
917 GST_ELEMENT_WARNING (rtpvorbispay, STREAM, DECODE,
918 (NULL), ("Error initializing header config"));
919 gst_buffer_unmap (buffer, &map);
920 gst_buffer_unref (buffer);
926 gst_rtp_vorbis_pay_sink_event (GstRTPBasePayload * payload, GstEvent * event)
928 GstRtpVorbisPay *rtpvorbispay = GST_RTP_VORBIS_PAY (payload);
930 switch (GST_EVENT_TYPE (event)) {
931 case GST_EVENT_FLUSH_STOP:
932 gst_rtp_vorbis_pay_clear_packet (rtpvorbispay);
937 /* false to let parent handle event as well */
938 return GST_RTP_BASE_PAYLOAD_CLASS (parent_class)->sink_event (payload, event);
941 static GstStateChangeReturn
942 gst_rtp_vorbis_pay_change_state (GstElement * element,
943 GstStateChange transition)
945 GstRtpVorbisPay *rtpvorbispay;
946 GstStateChangeReturn ret;
948 rtpvorbispay = GST_RTP_VORBIS_PAY (element);
950 switch (transition) {
955 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
957 switch (transition) {
958 case GST_STATE_CHANGE_PAUSED_TO_READY:
959 gst_rtp_vorbis_pay_cleanup (rtpvorbispay);
968 gst_rtp_vorbis_pay_set_property (GObject * object, guint prop_id,
969 const GValue * value, GParamSpec * pspec)
971 GstRtpVorbisPay *rtpvorbispay;
973 rtpvorbispay = GST_RTP_VORBIS_PAY (object);
976 case PROP_CONFIG_INTERVAL:
977 rtpvorbispay->config_interval = g_value_get_uint (value);
985 gst_rtp_vorbis_pay_get_property (GObject * object, guint prop_id,
986 GValue * value, GParamSpec * pspec)
988 GstRtpVorbisPay *rtpvorbispay;
990 rtpvorbispay = GST_RTP_VORBIS_PAY (object);
993 case PROP_CONFIG_INTERVAL:
994 g_value_set_uint (value, rtpvorbispay->config_interval);
1002 gst_rtp_vorbis_pay_plugin_init (GstPlugin * plugin)
1004 return gst_element_register (plugin, "rtpvorbispay",
1005 GST_RANK_SECONDARY, GST_TYPE_RTP_VORBIS_PAY);