2 * Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
4 * gstoggdemux.c: ogg stream demuxer
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
23 * SECTION:element-oggdemux
24 * @see_also: <link linkend="gst-plugins-base-plugins-oggmux">oggmux</link>
26 * This element demuxes ogg files into their encoded audio and video components.
29 * <title>Example pipelines</title>
31 * gst-launch -v filesrc location=test.ogg ! oggdemux ! vorbisdec ! audioconvert ! alsasink
32 * ]| Decodes the vorbis audio stored inside an ogg container.
35 * Last reviewed on 2006-12-30 (0.10.5)
43 /* FIXME 0.11: suppress warnings for deprecated API such as GStaticRecMutex
44 * with newer GLib versions (>= 2.31.0) */
45 #define GLIB_DISABLE_DEPRECATION_WARNINGS
48 #include <gst/gst-i18n-plugin.h>
49 #include <gst/tag/tag.h>
51 #include "gstoggdemux.h"
53 #include "gst/glib-compat-private.h"
55 #define CHUNKSIZE (8500) /* this is out of vorbisfile */
57 /* we hope we get a granpos within this many bytes off the end */
58 #define DURATION_CHUNK_OFFSET (64*1024)
60 /* stop duration checks within this much of EOS */
61 #define EOS_AVOIDANCE_THRESHOLD 8192
63 #define GST_FLOW_LIMIT GST_FLOW_CUSTOM_ERROR
64 #define GST_FLOW_SKIP_PUSH GST_FLOW_CUSTOM_SUCCESS_1
66 #define GST_CHAIN_LOCK(ogg) g_mutex_lock((ogg)->chain_lock)
67 #define GST_CHAIN_UNLOCK(ogg) g_mutex_unlock((ogg)->chain_lock)
69 #define GST_PUSH_LOCK(ogg) \
71 GST_TRACE_OBJECT(ogg, "Push lock"); \
72 g_mutex_lock((ogg)->push_lock); \
75 #define GST_PUSH_UNLOCK(ogg) \
77 GST_TRACE_OBJECT(ogg, "Push unlock"); \
78 g_mutex_unlock((ogg)->push_lock); \
81 GST_DEBUG_CATEGORY (gst_ogg_demux_debug);
82 GST_DEBUG_CATEGORY (gst_ogg_demux_setup_debug);
83 #define GST_CAT_DEFAULT gst_ogg_demux_debug
87 _ogg_packet_copy (const ogg_packet * packet)
89 ogg_packet *ret = g_slice_new (ogg_packet);
92 ret->packet = g_memdup (packet->packet, packet->bytes);
98 _ogg_packet_free (ogg_packet * packet)
100 g_free (packet->packet);
101 g_slice_free (ogg_packet, packet);
105 gst_ogg_page_copy (ogg_page * page)
107 ogg_page *p = g_slice_new (ogg_page);
109 /* make a copy of the page */
110 p->header = g_memdup (page->header, page->header_len);
111 p->header_len = page->header_len;
112 p->body = g_memdup (page->body, page->body_len);
113 p->body_len = page->body_len;
119 gst_ogg_page_free (ogg_page * page)
121 g_free (page->header);
123 g_slice_free (ogg_page, page);
126 static gboolean gst_ogg_demux_collect_chain_info (GstOggDemux * ogg,
127 GstOggChain * chain);
128 static gboolean gst_ogg_demux_activate_chain (GstOggDemux * ogg,
129 GstOggChain * chain, GstEvent * event);
130 static void gst_ogg_pad_mark_discont (GstOggPad * pad);
131 static void gst_ogg_chain_mark_discont (GstOggChain * chain);
133 static gboolean gst_ogg_demux_perform_seek (GstOggDemux * ogg,
135 static gboolean gst_ogg_demux_receive_event (GstElement * element,
138 static void gst_ogg_pad_dispose (GObject * object);
139 static void gst_ogg_pad_finalize (GObject * object);
141 static const GstQueryType *gst_ogg_pad_query_types (GstPad * pad);
142 static gboolean gst_ogg_pad_src_query (GstPad * pad, GstQuery * query);
143 static gboolean gst_ogg_pad_event (GstPad * pad, GstEvent * event);
144 static GstCaps *gst_ogg_pad_getcaps (GstPad * pad);
145 static GstOggPad *gst_ogg_chain_get_stream (GstOggChain * chain,
148 static GstFlowReturn gst_ogg_demux_combine_flows (GstOggDemux * ogg,
149 GstOggPad * pad, GstFlowReturn ret);
150 static void gst_ogg_demux_sync_streams (GstOggDemux * ogg);
152 GstCaps *gst_ogg_demux_set_header_on_caps (GstOggDemux * ogg,
153 GstCaps * caps, GList * headers);
154 static gboolean gst_ogg_demux_send_event (GstOggDemux * ogg, GstEvent * event);
155 static gboolean gst_ogg_demux_perform_seek_push (GstOggDemux * ogg,
157 static gboolean gst_ogg_demux_check_duration_push (GstOggDemux * ogg,
158 GstSeekFlags flags, GstEvent * event);
160 GType gst_ogg_pad_get_type (void);
161 G_DEFINE_TYPE (GstOggPad, gst_ogg_pad, GST_TYPE_PAD);
164 gst_ogg_pad_class_init (GstOggPadClass * klass)
166 GObjectClass *gobject_class;
168 gobject_class = (GObjectClass *) klass;
170 gobject_class->dispose = gst_ogg_pad_dispose;
171 gobject_class->finalize = gst_ogg_pad_finalize;
175 gst_ogg_pad_init (GstOggPad * pad)
177 gst_pad_set_event_function (GST_PAD (pad),
178 GST_DEBUG_FUNCPTR (gst_ogg_pad_event));
179 gst_pad_set_getcaps_function (GST_PAD (pad),
180 GST_DEBUG_FUNCPTR (gst_ogg_pad_getcaps));
181 gst_pad_set_query_type_function (GST_PAD (pad),
182 GST_DEBUG_FUNCPTR (gst_ogg_pad_query_types));
183 gst_pad_set_query_function (GST_PAD (pad),
184 GST_DEBUG_FUNCPTR (gst_ogg_pad_src_query));
186 pad->mode = GST_OGG_PAD_MODE_INIT;
188 pad->current_granule = -1;
189 pad->keyframe_granule = -1;
191 pad->start_time = GST_CLOCK_TIME_NONE;
193 pad->last_stop = GST_CLOCK_TIME_NONE;
195 pad->have_type = FALSE;
196 pad->continued = NULL;
197 pad->map.headers = NULL;
198 pad->map.queued = NULL;
200 pad->map.granulerate_n = 0;
201 pad->map.granulerate_d = 0;
202 pad->map.granuleshift = -1;
206 gst_ogg_pad_dispose (GObject * object)
208 GstOggPad *pad = GST_OGG_PAD (object);
213 g_list_foreach (pad->map.headers, (GFunc) _ogg_packet_free, NULL);
214 g_list_free (pad->map.headers);
215 pad->map.headers = NULL;
216 g_list_foreach (pad->map.queued, (GFunc) _ogg_packet_free, NULL);
217 g_list_free (pad->map.queued);
218 pad->map.queued = NULL;
220 g_free (pad->map.index);
221 pad->map.index = NULL;
223 /* clear continued pages */
224 g_list_foreach (pad->continued, (GFunc) gst_ogg_page_free, NULL);
225 g_list_free (pad->continued);
226 pad->continued = NULL;
229 gst_caps_unref (pad->map.caps);
230 pad->map.caps = NULL;
233 if (pad->map.taglist) {
234 gst_tag_list_free (pad->map.taglist);
235 pad->map.taglist = NULL;
238 ogg_stream_reset (&pad->map.stream);
240 G_OBJECT_CLASS (gst_ogg_pad_parent_class)->dispose (object);
244 gst_ogg_pad_finalize (GObject * object)
246 GstOggPad *pad = GST_OGG_PAD (object);
248 ogg_stream_clear (&pad->map.stream);
250 G_OBJECT_CLASS (gst_ogg_pad_parent_class)->finalize (object);
253 static const GstQueryType *
254 gst_ogg_pad_query_types (GstPad * pad)
256 static const GstQueryType query_types[] = {
266 gst_ogg_pad_getcaps (GstPad * pad)
268 return gst_caps_ref (GST_PAD_CAPS (pad));
272 gst_ogg_pad_src_query (GstPad * pad, GstQuery * query)
277 ogg = GST_OGG_DEMUX (gst_pad_get_parent (pad));
279 switch (GST_QUERY_TYPE (query)) {
280 case GST_QUERY_DURATION:
283 gint64 total_time = -1;
285 gst_query_parse_duration (query, &format, NULL);
286 /* can only get position in time */
287 if (format != GST_FORMAT_TIME)
290 if (ogg->total_time != -1) {
291 /* we can return the total length */
292 total_time = ogg->total_time;
294 gint bitrate = ogg->bitrate;
296 /* try with length and bitrate */
300 /* ask upstream for total length in bytes */
301 uquery = gst_query_new_duration (GST_FORMAT_BYTES);
302 if (gst_pad_peer_query (ogg->sinkpad, uquery)) {
305 gst_query_parse_duration (uquery, NULL, &length);
307 /* estimate using the bitrate */
309 gst_util_uint64_scale (length, 8 * GST_SECOND, bitrate);
312 "length: %" G_GINT64_FORMAT ", bitrate %d, total_time %"
313 GST_TIME_FORMAT, length, bitrate, GST_TIME_ARGS (total_time));
315 gst_query_unref (uquery);
319 gst_query_set_duration (query, GST_FORMAT_TIME, total_time);
322 case GST_QUERY_SEEKING:
326 gst_query_parse_seeking (query, &format, NULL, NULL, NULL);
327 if (format == GST_FORMAT_TIME) {
328 gboolean seekable = FALSE;
333 stop = ogg->total_time;
334 } else if (ogg->current_chain->streams->len) {
338 for (i = 0; i < ogg->current_chain->streams->len; i++) {
340 g_array_index (ogg->current_chain->streams, GstOggPad *, i);
343 if (pad->map.index != NULL && pad->map.n_index != 0) {
345 GstClockTime idx_time;
347 idx = &pad->map.index[pad->map.n_index - 1];
349 gst_util_uint64_scale (idx->timestamp, GST_SECOND,
354 stop = MAX (idx_time, stop);
356 stop = -1; /* we've no clue, sadly, without seeking */
361 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable, 0, stop);
369 res = gst_pad_query_default (pad, query);
373 gst_object_unref (ogg);
380 GST_DEBUG_OBJECT (ogg, "only query duration on TIME is supported");
387 gst_ogg_demux_receive_event (GstElement * element, GstEvent * event)
392 ogg = GST_OGG_DEMUX (element);
394 switch (GST_EVENT_TYPE (event)) {
396 /* now do the seek */
397 res = gst_ogg_demux_perform_seek (ogg, event);
398 gst_event_unref (event);
401 GST_DEBUG_OBJECT (ogg, "We only handle seek events here");
410 GST_DEBUG_OBJECT (ogg, "error handling event");
411 gst_event_unref (event);
417 gst_ogg_pad_event (GstPad * pad, GstEvent * event)
422 ogg = GST_OGG_DEMUX (gst_pad_get_parent (pad));
424 switch (GST_EVENT_TYPE (event)) {
426 /* now do the seek */
427 res = gst_ogg_demux_perform_seek (ogg, event);
428 gst_event_unref (event);
431 res = gst_pad_event_default (pad, event);
434 gst_object_unref (ogg);
440 gst_ogg_pad_reset (GstOggPad * pad)
442 ogg_stream_reset (&pad->map.stream);
444 GST_DEBUG_OBJECT (pad, "doing reset");
446 /* clear continued pages */
447 g_list_foreach (pad->continued, (GFunc) gst_ogg_page_free, NULL);
448 g_list_free (pad->continued);
449 pad->continued = NULL;
451 pad->last_ret = GST_FLOW_OK;
452 pad->last_stop = GST_CLOCK_TIME_NONE;
453 pad->current_granule = -1;
454 pad->keyframe_granule = -1;
458 /* queue data, basically takes the packet, puts it in a buffer and store the
459 * buffer in the queued list. */
461 gst_ogg_demux_queue_data (GstOggPad * pad, ogg_packet * packet)
463 #ifndef GST_DISABLE_GST_DEBUG
464 GstOggDemux *ogg = pad->ogg;
467 GST_DEBUG_OBJECT (ogg, "%p queueing data serial %08x",
468 pad, pad->map.serialno);
470 pad->map.queued = g_list_append (pad->map.queued, _ogg_packet_copy (packet));
477 gst_ogg_demux_chain_peer (GstOggPad * pad, ogg_packet * packet,
478 gboolean push_headers)
480 GstBuffer *buf = NULL;
481 GstFlowReturn ret, cret;
482 GstOggDemux *ogg = pad->ogg;
488 GstClockTime out_timestamp, out_duration;
489 guint64 out_offset, out_offset_end;
490 gboolean delta_unit = FALSE;
494 GST_DEBUG_OBJECT (pad, "Chaining %d %d %" GST_TIME_FORMAT " %d %p",
495 ogg->pullmode, ogg->push_state, GST_TIME_ARGS (ogg->push_time_length),
496 ogg->push_disable_seeking, ogg->building_chain);
498 if (!ogg->pullmode && ogg->push_state == PUSH_PLAYING
499 && ogg->push_time_length == GST_CLOCK_TIME_NONE
500 && !ogg->push_disable_seeking) {
501 if (!ogg->building_chain) {
502 /* we got all headers, now try to get duration */
503 if (!gst_ogg_demux_check_duration_push (ogg, GST_SEEK_FLAG_FLUSH, NULL)) {
504 GST_PUSH_UNLOCK (ogg);
508 GST_PUSH_UNLOCK (ogg);
511 GST_PUSH_UNLOCK (ogg);
513 GST_DEBUG_OBJECT (ogg,
514 "%p streaming to peer serial %08x", pad, pad->map.serialno);
516 if (pad->map.is_ogm) {
520 data = packet->packet;
521 bytes = packet->bytes;
526 if ((data[0] & 1) || (data[0] & 3 && pad->map.is_ogm_text)) {
527 /* We don't push header packets for OGM */
531 offset = 1 + (((data[0] & 0xc0) >> 6) | ((data[0] & 0x02) << 1));
532 delta_unit = (((data[0] & 0x08) >> 3) == 0);
536 /* Strip trailing \0 for subtitles */
537 if (pad->map.is_ogm_text) {
538 while (bytes && data[bytes - 1] == 0) {
543 } else if (pad->map.is_vp8) {
544 if ((packet->bytes >= 7 && memcmp (packet->packet, "OVP80\2 ", 7) == 0) ||
546 (packet->bytes >= 5 && memcmp (packet->packet, "OVP80", 5) == 0)) {
547 /* We don't push header packets for VP8 */
557 /* get timing info for the packet */
558 if (gst_ogg_stream_packet_is_header (&pad->map, packet)) {
560 GST_DEBUG_OBJECT (ogg, "packet is header");
562 duration = gst_ogg_stream_get_packet_duration (&pad->map, packet);
563 GST_DEBUG_OBJECT (ogg, "packet duration %" G_GUINT64_FORMAT, duration);
567 out_timestamp = GST_CLOCK_TIME_NONE;
568 out_duration = GST_CLOCK_TIME_NONE;
572 if (packet->granulepos != -1) {
573 pad->current_granule = gst_ogg_stream_granulepos_to_granule (&pad->map,
575 pad->keyframe_granule =
576 gst_ogg_stream_granulepos_to_key_granule (&pad->map,
578 GST_DEBUG_OBJECT (ogg, "new granule %" G_GUINT64_FORMAT,
579 pad->current_granule);
580 } else if (ogg->segment.rate > 0.0 && pad->current_granule != -1) {
581 pad->current_granule += duration;
582 GST_DEBUG_OBJECT (ogg, "interpolating granule %" G_GUINT64_FORMAT,
583 pad->current_granule);
585 if (ogg->segment.rate < 0.0 && packet->granulepos == -1) {
586 /* negative rates, only set timestamp on the packets with a granulepos */
592 /* we only push buffers after we have a valid granule. This is done so that
593 * we nicely skip packets without a timestamp after a seek. This is ok
594 * because we base or seek on the packet after the page with the smaller
596 if (pad->current_granule == -1)
599 if (pad->map.is_ogm) {
600 out_timestamp = gst_ogg_stream_granule_to_time (&pad->map,
601 pad->current_granule);
602 out_duration = gst_util_uint64_scale (duration,
603 GST_SECOND * pad->map.granulerate_d, pad->map.granulerate_n);
604 } else if (pad->map.is_sparse) {
605 out_timestamp = gst_ogg_stream_granule_to_time (&pad->map,
606 pad->current_granule);
607 if (duration == GST_CLOCK_TIME_NONE) {
608 out_duration = GST_CLOCK_TIME_NONE;
610 out_duration = gst_util_uint64_scale (duration,
611 GST_SECOND * pad->map.granulerate_d, pad->map.granulerate_n);
614 out_timestamp = gst_ogg_stream_granule_to_time (&pad->map,
615 pad->current_granule - duration);
617 gst_ogg_stream_granule_to_time (&pad->map,
618 pad->current_granule) - out_timestamp;
621 gst_ogg_stream_granule_to_granulepos (&pad->map,
622 pad->current_granule, pad->keyframe_granule);
624 gst_ogg_stream_granule_to_time (&pad->map, pad->current_granule);
628 if (pad->map.is_ogm_text) {
629 /* check for invalid buffer sizes */
630 if (G_UNLIKELY (offset + trim >= packet->bytes))
637 buf = gst_buffer_new_and_alloc (packet->bytes - offset - trim);
638 gst_buffer_set_caps (buf, GST_PAD_CAPS (pad));
640 /* set delta flag for OGM content */
642 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
644 /* copy packet in buffer */
645 memcpy (buf->data, packet->packet + offset, packet->bytes - offset - trim);
647 GST_BUFFER_TIMESTAMP (buf) = out_timestamp;
648 GST_BUFFER_DURATION (buf) = out_duration;
649 GST_BUFFER_OFFSET (buf) = out_offset;
650 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
652 /* Mark discont on the buffer */
654 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
655 pad->discont = FALSE;
658 pad->last_stop = ogg->segment.last_stop;
660 /* don't push the header packets when we are asked to skip them */
661 if (!packet->b_o_s || push_headers) {
662 ret = gst_pad_push (GST_PAD_CAST (pad), buf);
666 cret = gst_ogg_demux_combine_flows (ogg, pad, ret);
669 /* we're done with skeleton stuff */
670 if (pad->map.is_skeleton)
673 /* check if valid granulepos, then we can calculate the current
674 * position. We know the granule for each packet but we only want to update
675 * the last_stop when we have a valid granulepos on the packet because else
676 * our time jumps around for the different streams. */
677 if (packet->granulepos < 0)
680 /* convert to time */
681 current_time = gst_ogg_stream_get_end_time_for_granulepos (&pad->map,
684 /* convert to stream time */
685 if ((chain = pad->chain)) {
686 gint64 chain_start = 0;
688 if (chain->segment_start != GST_CLOCK_TIME_NONE)
689 chain_start = chain->segment_start;
691 current_time = current_time - chain_start + chain->begin_time;
694 /* and store as the current position */
695 gst_segment_set_last_stop (&ogg->segment, GST_FORMAT_TIME, current_time);
697 GST_DEBUG_OBJECT (ogg, "ogg current time %" GST_TIME_FORMAT,
698 GST_TIME_ARGS (current_time));
700 /* check stream eos */
701 if ((ogg->segment.rate > 0.0 && ogg->segment.stop != GST_CLOCK_TIME_NONE &&
702 current_time > ogg->segment.stop) ||
703 (ogg->segment.rate < 0.0 && ogg->segment.start != GST_CLOCK_TIME_NONE &&
704 current_time < ogg->segment.start)) {
705 GST_DEBUG_OBJECT (ogg, "marking pad %p EOS", pad);
711 gst_buffer_unref (buf);
712 /* return combined flow result */
718 GST_DEBUG_OBJECT (ogg, "Skipping empty packet");
724 GST_DEBUG_OBJECT (ogg, "skipping packet: no valid granule found yet");
729 GST_DEBUG_OBJECT (ogg, "pad not added yet");
735 gst_ogg_demux_collect_start_time (GstOggDemux * ogg, GstOggChain * chain)
738 guint64 start_time = G_MAXUINT64;
740 for (i = 0; i < chain->streams->len; i++) {
741 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
743 if (pad->map.is_skeleton)
746 /* can do this if the pad start time is not defined */
747 GST_DEBUG_OBJECT (ogg, "Pad %08x (%s) start time is %" GST_TIME_FORMAT,
748 pad->map.serialno, gst_ogg_stream_get_media_type (&pad->map),
749 GST_TIME_ARGS (pad->start_time));
750 if (pad->start_time == GST_CLOCK_TIME_NONE) {
751 if (!pad->map.is_sparse) {
752 start_time = G_MAXUINT64;
756 start_time = MIN (start_time, pad->start_time);
763 gst_ogg_demux_collect_sync_time (GstOggDemux * ogg, GstOggChain * chain)
766 GstClockTime sync_time = GST_CLOCK_TIME_NONE;
769 GST_WARNING_OBJECT (ogg, "No chain!");
770 return GST_CLOCK_TIME_NONE;
773 for (i = 0; i < chain->streams->len; i++) {
774 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
776 if (pad->map.is_sparse)
779 if (pad->push_sync_time == GST_CLOCK_TIME_NONE) {
780 sync_time = GST_CLOCK_TIME_NONE;
783 if (sync_time == GST_CLOCK_TIME_NONE)
784 sync_time = pad->push_sync_time;
786 sync_time = MAX (sync_time, pad->push_sync_time);
792 /* submit a packet to the oggpad, this function will run the
793 * typefind code for the pad if this is the first packet for this
797 gst_ogg_pad_submit_packet (GstOggPad * pad, ogg_packet * packet)
800 GstFlowReturn ret = GST_FLOW_OK;
802 GstOggDemux *ogg = pad->ogg;
804 GST_DEBUG_OBJECT (ogg, "%p submit packet serial %08x",
805 pad, pad->map.serialno);
807 if (!pad->have_type) {
808 pad->have_type = gst_ogg_stream_setup_map (&pad->map, packet);
809 if (!pad->have_type) {
810 pad->map.caps = gst_caps_new_simple ("application/x-unknown", NULL);
812 if (pad->map.is_skeleton) {
813 GST_DEBUG_OBJECT (ogg, "we have a fishead");
814 /* copy values over to global ogg level */
815 ogg->basetime = pad->map.basetime;
816 ogg->prestime = pad->map.prestime;
818 /* use total time to update the total ogg time */
819 if (ogg->total_time == -1) {
820 ogg->total_time = pad->map.total_time;
821 } else if (pad->map.total_time > 0) {
822 ogg->total_time = MAX (ogg->total_time, pad->map.total_time);
826 gst_pad_set_caps (GST_PAD (pad), pad->map.caps);
828 GST_WARNING_OBJECT (ogg, "stream parser didn't create src pad caps");
832 if (pad->map.is_skeleton) {
837 /* try to parse the serialno first */
838 if (gst_ogg_map_parse_fisbone (&pad->map, packet->packet, packet->bytes,
841 GST_DEBUG_OBJECT (pad->ogg,
842 "got skeleton packet for stream 0x%08x", serialno);
844 skel_pad = gst_ogg_chain_get_stream (pad->chain, serialno);
847 case GST_OGG_SKELETON_FISBONE:
848 /* parse the remainder of the fisbone in the pad with the serialno,
849 * note that we ignore the start_time as this is usually wrong for
851 gst_ogg_map_add_fisbone (&skel_pad->map, &pad->map, packet->packet,
852 packet->bytes, NULL);
854 case GST_OGG_SKELETON_INDEX:
855 gst_ogg_map_add_index (&skel_pad->map, &pad->map, packet->packet,
858 /* use total time to update the total ogg time */
859 if (ogg->total_time == -1) {
860 ogg->total_time = skel_pad->map.total_time;
861 } else if (skel_pad->map.total_time > 0) {
862 ogg->total_time = MAX (ogg->total_time, skel_pad->map.total_time);
870 GST_WARNING_OBJECT (pad->ogg,
871 "found skeleton fisbone for an unknown stream 0x%08x", serialno);
876 granule = gst_ogg_stream_granulepos_to_granule (&pad->map,
879 GST_DEBUG_OBJECT (ogg, "%p has granulepos %" G_GINT64_FORMAT, pad, granule);
880 pad->current_granule = granule;
883 /* restart header packet count when seeing a b_o_s page;
884 * particularly useful following a seek or even following chain finding */
886 GST_DEBUG_OBJECT (ogg, "b_o_s packet, resetting header packet count");
887 pad->map.n_header_packets_seen = 0;
888 if (!pad->map.have_headers) {
889 GST_DEBUG_OBJECT (ogg, "clearing header packets");
890 g_list_foreach (pad->map.headers, (GFunc) _ogg_packet_free, NULL);
891 g_list_free (pad->map.headers);
892 pad->map.headers = NULL;
896 /* Overload the value of b_o_s in ogg_packet with a flag whether or
897 * not this is a header packet. Maybe some day this could be cleaned
899 packet->b_o_s = gst_ogg_stream_packet_is_header (&pad->map, packet);
900 if (!packet->b_o_s) {
901 GST_DEBUG ("found non-header packet");
902 pad->map.have_headers = TRUE;
903 if (pad->start_time == GST_CLOCK_TIME_NONE) {
904 gint64 duration = gst_ogg_stream_get_packet_duration (&pad->map, packet);
905 GST_DEBUG ("duration %" G_GINT64_FORMAT, duration);
906 if (duration != -1) {
907 pad->map.accumulated_granule += duration;
908 GST_DEBUG ("accumulated granule %" G_GINT64_FORMAT,
909 pad->map.accumulated_granule);
912 if (packet->granulepos != -1) {
913 ogg_int64_t start_granule;
916 granule = gst_ogg_stream_granulepos_to_granule (&pad->map,
919 if (granule > pad->map.accumulated_granule)
920 start_granule = granule - pad->map.accumulated_granule;
924 pad->start_time = gst_ogg_stream_granule_to_time (&pad->map,
926 GST_DEBUG_OBJECT (ogg,
927 "start time %" GST_TIME_FORMAT " (%" GST_TIME_FORMAT ") for %s "
928 "from granpos %" G_GINT64_FORMAT " (granule %" G_GINT64_FORMAT ", "
929 "accumulated granule %" G_GINT64_FORMAT,
930 GST_TIME_ARGS (pad->start_time), GST_TIME_ARGS (pad->start_time),
931 gst_ogg_stream_get_media_type (&pad->map),
932 (gint64) packet->granulepos, granule, pad->map.accumulated_granule);
934 packet->granulepos = gst_ogg_stream_granule_to_granulepos (&pad->map,
935 pad->map.accumulated_granule, pad->keyframe_granule);
939 /* look for tags in header packet (before inc header count) */
940 gst_ogg_stream_extract_tags (&pad->map, packet);
941 pad->map.n_header_packets_seen++;
942 if (!pad->map.have_headers) {
944 g_list_append (pad->map.headers, _ogg_packet_copy (packet));
945 GST_DEBUG ("keeping header packet %d", pad->map.n_header_packets_seen);
949 /* we know the start_time of the pad data, see if we
950 * can activate the complete chain if this is a dynamic
951 * chain. We need all the headers too for this. */
952 if (pad->start_time != GST_CLOCK_TIME_NONE && pad->map.have_headers) {
953 GstOggChain *chain = pad->chain;
955 /* check if complete chain has start time */
956 if (chain == ogg->building_chain) {
957 GstEvent *event = NULL;
962 GST_DEBUG_OBJECT (ogg, "need to resync");
964 /* when we need to resync after a seek, we wait until we have received
965 * timestamps on all streams */
966 start_time = gst_ogg_demux_collect_start_time (ogg, chain);
968 if (start_time != G_MAXUINT64) {
971 GST_DEBUG_OBJECT (ogg, "start_time: %" GST_TIME_FORMAT,
972 GST_TIME_ARGS (start_time));
974 if (chain->segment_start < start_time)
976 (start_time - chain->segment_start) + chain->begin_time;
978 segment_time = chain->begin_time;
980 /* create the newsegment event we are going to send out */
982 if (!ogg->pullmode && ogg->push_state == PUSH_LINEAR2) {
983 /* if we are fast forwarding to the actual seek target,
984 ensure previous frames are clipped */
985 GST_DEBUG_OBJECT (ogg,
986 "Resynced, starting segment at %" GST_TIME_FORMAT
987 ", start_time %" GST_TIME_FORMAT,
988 GST_TIME_ARGS (ogg->push_seek_time_original_target),
989 GST_TIME_ARGS (start_time));
991 gst_event_new_new_segment (FALSE, ogg->push_seek_rate,
992 GST_FORMAT_TIME, ogg->push_seek_time_original_target, -1,
993 ogg->push_seek_time_original_target);
994 ogg->push_state = PUSH_PLAYING;
996 event = gst_event_new_new_segment (FALSE, ogg->segment.rate,
997 GST_FORMAT_TIME, start_time, chain->segment_stop, segment_time);
999 GST_PUSH_UNLOCK (ogg);
1001 ogg->resync = FALSE;
1004 /* see if we have enough info to activate the chain, we have enough info
1005 * when all streams have a valid start time. */
1006 if (gst_ogg_demux_collect_chain_info (ogg, chain)) {
1008 GST_DEBUG_OBJECT (ogg, "segment_start: %" GST_TIME_FORMAT,
1009 GST_TIME_ARGS (chain->segment_start));
1010 GST_DEBUG_OBJECT (ogg, "segment_stop: %" GST_TIME_FORMAT,
1011 GST_TIME_ARGS (chain->segment_stop));
1012 GST_DEBUG_OBJECT (ogg, "segment_time: %" GST_TIME_FORMAT,
1013 GST_TIME_ARGS (chain->begin_time));
1015 /* create the newsegment event we are going to send out */
1016 event = gst_event_new_new_segment (FALSE, ogg->segment.rate,
1017 GST_FORMAT_TIME, chain->segment_start, chain->segment_stop,
1023 gst_event_set_seqnum (event, ogg->seqnum);
1025 gst_ogg_demux_activate_chain (ogg, chain, event);
1027 ogg->building_chain = NULL;
1032 /* if we are building a chain, store buffer for when we activate
1033 * it. This path is taken if we operate in streaming mode. */
1034 if (ogg->building_chain) {
1035 /* bos packets where stored in the header list so we can discard
1038 ret = gst_ogg_demux_queue_data (pad, packet);
1040 /* else we are completely streaming to the peer */
1042 ret = gst_ogg_demux_chain_peer (pad, packet, !ogg->pullmode);
1047 /* flush at most @npackets from the stream layer. All packets if
1050 static GstFlowReturn
1051 gst_ogg_pad_stream_out (GstOggPad * pad, gint npackets)
1053 GstFlowReturn result = GST_FLOW_OK;
1054 gboolean done = FALSE;
1063 ret = ogg_stream_packetout (&pad->map.stream, &packet);
1066 GST_LOG_OBJECT (ogg, "packetout done");
1070 GST_LOG_OBJECT (ogg, "packetout discont");
1071 if (!pad->map.is_sparse) {
1072 gst_ogg_chain_mark_discont (pad->chain);
1074 gst_ogg_pad_mark_discont (pad);
1078 GST_LOG_OBJECT (ogg, "packetout gave packet of size %ld", packet.bytes);
1079 if (packet.bytes > ogg->max_packet_size)
1080 ogg->max_packet_size = packet.bytes;
1081 result = gst_ogg_pad_submit_packet (pad, &packet);
1082 /* not linked is not a problem, it's possible that we are still
1083 * collecting headers and that we don't have exposed the pads yet */
1084 if (result == GST_FLOW_NOT_LINKED)
1086 else if (result <= GST_FLOW_UNEXPECTED)
1087 goto could_not_submit;
1090 GST_WARNING_OBJECT (ogg,
1091 "invalid return value %d for ogg_stream_packetout, resetting stream",
1093 gst_ogg_pad_reset (pad);
1098 done = (npackets == 0);
1106 GST_WARNING_OBJECT (ogg,
1107 "could not submit packet for stream %08x, "
1108 "error: %d", pad->map.serialno, result);
1109 gst_ogg_pad_reset (pad);
1115 gst_ogg_demux_setup_bisection_bounds (GstOggDemux * ogg)
1117 if (ogg->push_last_seek_time >= ogg->push_seek_time_target) {
1118 GST_DEBUG_OBJECT (ogg, "We overshot by %" GST_TIME_FORMAT,
1119 GST_TIME_ARGS (ogg->push_last_seek_time - ogg->push_seek_time_target));
1120 ogg->push_offset1 = ogg->push_last_seek_offset;
1121 ogg->push_time1 = ogg->push_last_seek_time;
1122 ogg->seek_undershot = FALSE;
1124 GST_DEBUG_OBJECT (ogg, "We undershot by %" GST_TIME_FORMAT,
1125 GST_TIME_ARGS (ogg->push_seek_time_target - ogg->push_last_seek_time));
1126 ogg->push_offset0 = ogg->push_last_seek_offset;
1127 ogg->push_time0 = ogg->push_last_seek_time;
1128 ogg->seek_undershot = TRUE;
1133 gst_ogg_demux_estimate_bisection_target (GstOggDemux * ogg, float seek_quality)
1136 gint64 segment_bitrate;
1139 /* we might not know the length of the stream in time,
1140 so push_time1 might not be set */
1141 GST_DEBUG_OBJECT (ogg,
1142 "push time 1: %" GST_TIME_FORMAT ", dbytes %" G_GINT64_FORMAT,
1143 GST_TIME_ARGS (ogg->push_time1), ogg->push_offset1 - ogg->push_offset0);
1144 if (ogg->push_time1 == GST_CLOCK_TIME_NONE) {
1145 GST_DEBUG_OBJECT (ogg,
1146 "New segment to consider: bytes %" G_GINT64_FORMAT " %" G_GINT64_FORMAT
1147 ", time %" GST_TIME_FORMAT " (open ended)", ogg->push_offset0,
1148 ogg->push_offset1, GST_TIME_ARGS (ogg->push_time0));
1149 if (ogg->push_last_seek_time == ogg->push_start_time) {
1150 /* if we're at start and don't know the end time, we can't estimate
1151 bitrate, so get the nominal declared bitrate as a failsafe, or some
1152 random constant which will be discarded after we made a (probably
1153 dire) first guess */
1154 segment_bitrate = (ogg->bitrate > 0 ? ogg->bitrate : 1000);
1157 gst_util_uint64_scale (ogg->push_last_seek_offset - 0,
1158 8 * GST_SECOND, ogg->push_last_seek_time - ogg->push_start_time);
1162 gst_util_uint64_scale (ogg->push_seek_time_target - ogg->push_time0,
1163 segment_bitrate, 8 * GST_SECOND);
1164 ogg->seek_secant = TRUE;
1166 GST_DEBUG_OBJECT (ogg,
1167 "New segment to consider: bytes %" G_GINT64_FORMAT " %" G_GINT64_FORMAT
1168 ", time %" GST_TIME_FORMAT " %" GST_TIME_FORMAT, ogg->push_offset0,
1169 ogg->push_offset1, GST_TIME_ARGS (ogg->push_time0),
1170 GST_TIME_ARGS (ogg->push_time1));
1171 if (ogg->push_time0 == ogg->push_time1) {
1172 best = ogg->push_offset0;
1175 gst_util_uint64_scale (ogg->push_offset1 - ogg->push_offset0,
1176 8 * GST_SECOND, ogg->push_time1 - ogg->push_time0);
1177 GST_DEBUG_OBJECT (ogg,
1178 "Local bitrate on the %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT
1179 " segment: %" G_GINT64_FORMAT, GST_TIME_ARGS (ogg->push_time0),
1180 GST_TIME_ARGS (ogg->push_time1), segment_bitrate);
1184 gst_util_uint64_scale (ogg->push_seek_time_target - ogg->push_time0,
1185 segment_bitrate, 8 * GST_SECOND);
1186 if (seek_quality < 0.5f && ogg->seek_secant) {
1187 gint64 new_best, best2 = (ogg->push_offset0 + ogg->push_offset1) / 2;
1188 /* if dire result, give as much as 25% weight to a dumb bisection guess */
1189 float secant_weight = 1.0f - ((0.5 - seek_quality) / 0.5f) * 0.25;
1190 new_best = (best * secant_weight + best2 * (1.0f - secant_weight));
1191 GST_DEBUG_OBJECT (ogg,
1192 "Secant says %" G_GINT64_FORMAT ", straight is %" G_GINT64_FORMAT
1193 ", new best %" G_GINT64_FORMAT " with secant_weight %f", best,
1194 best2, new_best, secant_weight);
1196 ogg->seek_secant = FALSE;
1198 ogg->seek_secant = TRUE;
1203 GST_DEBUG_OBJECT (ogg, "Raw best guess: %" G_GINT64_FORMAT, best);
1205 /* offset the guess down as we need to capture the start of the
1206 page we are targetting - but only do so if we did not undershoot
1207 last time, as we're likely to still do this time */
1208 if (!ogg->seek_undershot) {
1209 /* very small packets are packed on pages, so offset by at least
1210 a value which is likely to get us at least one page where the
1213 ogg->max_packet_size >
1214 ogg->max_page_size ? ogg->max_packet_size : ogg->max_page_size;
1215 GST_DEBUG_OBJECT (ogg, "Offsetting by %" G_GINT64_FORMAT, skew);
1219 /* do not seek too close to the bounds, as we stop seeking
1220 when we get to within max_packet_size before the target */
1221 if (best > ogg->push_offset1 - ogg->max_packet_size) {
1222 best = ogg->push_offset1 - ogg->max_packet_size;
1223 GST_DEBUG_OBJECT (ogg,
1224 "Too close to high bound, pushing back to %" G_GINT64_FORMAT, best);
1225 } else if (best < ogg->push_offset0 + ogg->max_packet_size) {
1226 best = ogg->push_offset0 + ogg->max_packet_size;
1227 GST_DEBUG_OBJECT (ogg,
1228 "Too close to low bound, pushing forth to %" G_GINT64_FORMAT, best);
1231 /* keep within bounds */
1232 if (best > ogg->push_offset1)
1233 best = ogg->push_offset1;
1234 if (best < ogg->push_offset0)
1235 best = ogg->push_offset0;
1237 GST_DEBUG_OBJECT (ogg, "Choosing target %" G_GINT64_FORMAT, best);
1242 gst_ogg_demux_record_keyframe_time (GstOggDemux * ogg, GstOggPad * pad,
1243 ogg_int64_t granpos)
1246 GstClockTime kf_time;
1248 kf_granule = gst_ogg_stream_granulepos_to_key_granule (&pad->map, granpos);
1249 kf_time = gst_ogg_stream_granule_to_time (&pad->map, kf_granule);
1251 pad->push_kf_time = kf_time;
1254 /* returns the earliest keyframe time for all non sparse pads in the chain,
1255 * if known, and GST_CLOCK_TIME_NONE if not */
1257 gst_ogg_demux_get_earliest_keyframe_time (GstOggDemux * ogg)
1259 GstClockTime t = GST_CLOCK_TIME_NONE;
1260 GstOggChain *chain = ogg->building_chain;
1264 GST_WARNING_OBJECT (ogg, "No chain!");
1265 return GST_CLOCK_TIME_NONE;
1267 for (i = 0; i < chain->streams->len; i++) {
1268 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
1270 if (pad->map.is_sparse)
1272 if (pad->push_kf_time == GST_CLOCK_TIME_NONE)
1273 return GST_CLOCK_TIME_NONE;
1274 if (t == GST_CLOCK_TIME_NONE || pad->push_kf_time < t)
1275 t = pad->push_kf_time;
1281 /* MUST be called with the push lock locked, and will unlock it
1282 regardless of return value. */
1283 static GstFlowReturn
1284 gst_ogg_demux_seek_back_after_push_duration_check_unlock (GstOggDemux * ogg)
1288 /* Get the delayed event, if any */
1289 event = ogg->push_mode_seek_delayed_event;
1290 ogg->push_mode_seek_delayed_event = NULL;
1292 ogg->push_state = PUSH_PLAYING;
1294 GST_PUSH_UNLOCK (ogg);
1297 /* If there is one, perform it */
1298 gst_ogg_demux_perform_seek_push (ogg, event);
1300 /* If there wasn't, seek back at start to start normal playback */
1301 GST_INFO_OBJECT (ogg, "Seeking back to 0 after duration check");
1302 event = gst_event_new_seek (1.0, GST_FORMAT_BYTES,
1303 GST_SEEK_FLAG_ACCURATE | GST_SEEK_FLAG_FLUSH,
1304 GST_SEEK_TYPE_SET, 1, GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE);
1305 if (!gst_pad_push_event (ogg->sinkpad, event)) {
1306 GST_WARNING_OBJECT (ogg, "Failed seeking back to start");
1307 return GST_FLOW_ERROR;
1315 gst_ogg_demux_estimate_seek_quality (GstOggDemux * ogg)
1317 gint64 diff; /* how far from the goal we ended up */
1318 gint64 dist; /* how far we moved this iteration */
1321 if (ogg->push_prev_seek_time == GST_CLOCK_TIME_NONE) {
1322 /* for the first seek, we pretend we got a good seek,
1323 as we don't have a previous seek yet */
1327 /* We take a guess at how good the last seek was at guessing
1328 the byte target by comparing the amplitude of the last
1329 seek to the error */
1330 diff = ogg->push_seek_time_target - ogg->push_last_seek_time;
1333 dist = ogg->push_last_seek_time - ogg->push_prev_seek_time;
1337 seek_quality = (dist == 0) ? 0.0f : 1.0f / (1.0f + diff / (float) dist);
1339 GST_DEBUG_OBJECT (ogg,
1340 "We moved %" GST_TIME_FORMAT ", we're off by %" GST_TIME_FORMAT
1341 ", seek quality %f", GST_TIME_ARGS (dist), GST_TIME_ARGS (diff),
1343 return seek_quality;
1347 gst_ogg_demux_update_bisection_stats (GstOggDemux * ogg)
1351 GST_INFO_OBJECT (ogg, "Bisection needed %d + %d steps",
1352 ogg->push_bisection_steps[0], ogg->push_bisection_steps[1]);
1354 for (n = 0; n < 2; ++n) {
1355 ogg->stats_bisection_steps[n] += ogg->push_bisection_steps[n];
1356 if (ogg->stats_bisection_max_steps[n] < ogg->push_bisection_steps[n])
1357 ogg->stats_bisection_max_steps[n] = ogg->push_bisection_steps[n];
1359 ogg->stats_nbisections++;
1361 GST_INFO_OBJECT (ogg,
1362 "So far, %.2f + %.2f bisections needed per seek (max %d + %d)",
1363 ogg->stats_bisection_steps[0] / (float) ogg->stats_nbisections,
1364 ogg->stats_bisection_steps[1] / (float) ogg->stats_nbisections,
1365 ogg->stats_bisection_max_steps[0], ogg->stats_bisection_max_steps[1]);
1369 gst_ogg_pad_handle_push_mode_state (GstOggPad * pad, ogg_page * page)
1371 GstOggDemux *ogg = pad->ogg;
1372 ogg_int64_t granpos = ogg_page_granulepos (page);
1374 GST_PUSH_LOCK (ogg);
1376 if (ogg->push_start_time == GST_CLOCK_TIME_NONE) {
1377 ogg->push_start_time =
1378 gst_ogg_stream_get_start_time_for_granulepos (&pad->map, granpos);
1379 GST_DEBUG_OBJECT (ogg, "Stream start time: %" GST_TIME_FORMAT,
1380 GST_TIME_ARGS (ogg->push_start_time));
1382 ogg->push_time_offset =
1383 gst_ogg_stream_get_end_time_for_granulepos (&pad->map, granpos);
1384 if (ogg->push_time_offset > 0) {
1385 GST_DEBUG_OBJECT (ogg, "Bitrate since start: %" G_GUINT64_FORMAT,
1386 gst_util_uint64_scale (ogg->push_byte_offset, 8 * GST_SECOND,
1387 ogg->push_time_offset));
1390 if (ogg->push_state == PUSH_DURATION) {
1392 gst_ogg_stream_get_end_time_for_granulepos (&pad->map, granpos);
1394 if (ogg->total_time == GST_CLOCK_TIME_NONE || t > ogg->total_time) {
1395 GST_DEBUG_OBJECT (ogg, "New total time: %" GST_TIME_FORMAT,
1397 ogg->total_time = t;
1398 ogg->push_time_length = t;
1401 /* If we were determining the duration of the stream, we're now done,
1402 and can get back to sending the original event we delayed.
1403 We stop a bit before the end of the stream, as if we get a EOS
1404 event and there is a queue2 upstream (such as when using playbin2),
1405 it will pause the task *after* we come back from the EOS handler,
1406 so we cannot prevent the pausing by issuing a seek. */
1407 if (ogg->push_byte_offset + EOS_AVOIDANCE_THRESHOLD >=
1408 ogg->push_byte_length) {
1409 GstMessage *message;
1412 /* tell the pipeline we've just found out the duration */
1413 ogg->push_time_length = ogg->total_time;
1414 GST_INFO_OBJECT (ogg, "New duration found: %" GST_TIME_FORMAT,
1415 GST_TIME_ARGS (ogg->total_time));
1417 gst_message_new_duration (GST_OBJECT (ogg), GST_FORMAT_TIME,
1419 gst_element_post_message (GST_ELEMENT (ogg), message);
1421 GST_DEBUG_OBJECT (ogg,
1422 "We're close enough to the end, and we're scared "
1423 "to get too close, seeking back to start");
1425 res = gst_ogg_demux_seek_back_after_push_duration_check_unlock (ogg);
1426 if (res != GST_FLOW_OK)
1428 return GST_FLOW_SKIP_PUSH;
1430 GST_PUSH_UNLOCK (ogg);
1432 return GST_FLOW_SKIP_PUSH;
1436 /* if we're seeking, look at time, and decide what to do */
1437 if (ogg->push_state != PUSH_PLAYING && ogg->push_state != PUSH_LINEAR2) {
1442 gboolean close_enough;
1445 /* ignore -1 granpos when seeking, we want to sync on a real granpos */
1447 GST_PUSH_UNLOCK (ogg);
1448 if (ogg_stream_pagein (&pad->map.stream, page) != 0)
1450 return GST_FLOW_SKIP_PUSH;
1453 t = gst_ogg_stream_get_end_time_for_granulepos (&pad->map, granpos);
1455 if (ogg->push_state == PUSH_BISECT1 || ogg->push_state == PUSH_BISECT2) {
1456 GstClockTime sync_time;
1458 if (pad->push_sync_time == GST_CLOCK_TIME_NONE)
1459 pad->push_sync_time = t;
1460 GST_DEBUG_OBJECT (ogg, "Got timestamp %" GST_TIME_FORMAT " for %s",
1461 GST_TIME_ARGS (t), gst_ogg_stream_get_media_type (&pad->map));
1462 sync_time = gst_ogg_demux_collect_sync_time (ogg, ogg->building_chain);
1463 if (sync_time == GST_CLOCK_TIME_NONE) {
1464 GST_PUSH_UNLOCK (ogg);
1465 GST_DEBUG_OBJECT (ogg,
1466 "Not enough timing info collected for sync, waiting for more");
1467 if (ogg_stream_pagein (&pad->map.stream, page) != 0)
1469 return GST_FLOW_SKIP_PUSH;
1471 ogg->push_last_seek_time = sync_time;
1473 GST_DEBUG_OBJECT (ogg,
1474 "Bisection just seeked at %" G_GINT64_FORMAT ", time %"
1475 GST_TIME_FORMAT ", target was %" GST_TIME_FORMAT,
1476 ogg->push_last_seek_offset,
1477 GST_TIME_ARGS (ogg->push_last_seek_time),
1478 GST_TIME_ARGS (ogg->push_seek_time_target));
1480 if (ogg->push_time1 != GST_CLOCK_TIME_NONE) {
1481 seek_quality = gst_ogg_demux_estimate_seek_quality (ogg);
1482 GST_DEBUG_OBJECT (ogg,
1483 "Interval was %" G_GINT64_FORMAT " - %" G_GINT64_FORMAT " (%"
1484 G_GINT64_FORMAT "), time %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT
1485 " (%" GST_TIME_FORMAT "), seek quality %f", ogg->push_offset0,
1486 ogg->push_offset1, ogg->push_offset1 - ogg->push_offset0,
1487 GST_TIME_ARGS (ogg->push_time0), GST_TIME_ARGS (ogg->push_time1),
1488 GST_TIME_ARGS (ogg->push_time1 - ogg->push_time0), seek_quality);
1490 /* in a open ended seek, we can't do bisection, so we pretend
1491 we like our result so far */
1492 seek_quality = 1.0f;
1493 GST_DEBUG_OBJECT (ogg,
1494 "Interval was %" G_GINT64_FORMAT " - %" G_GINT64_FORMAT " (%"
1495 G_GINT64_FORMAT "), time %" GST_TIME_FORMAT " - unknown",
1496 ogg->push_offset0, ogg->push_offset1,
1497 ogg->push_offset1 - ogg->push_offset0,
1498 GST_TIME_ARGS (ogg->push_time0));
1500 ogg->push_prev_seek_time = ogg->push_last_seek_time;
1502 gst_ogg_demux_setup_bisection_bounds (ogg);
1504 best = gst_ogg_demux_estimate_bisection_target (ogg, seek_quality);
1506 if (ogg->push_seek_time_target == 0) {
1507 GST_DEBUG_OBJECT (ogg, "Seeking to 0, deemed close enough");
1508 close_enough = (ogg->push_last_seek_time == 0);
1510 /* TODO: make this dependent on framerate ? */
1511 GstClockTime time_threshold = GST_SECOND / 2;
1512 guint64 byte_threshold =
1513 (ogg->max_packet_size >
1514 64 * 1024 ? ogg->max_packet_size : 64 * 1024);
1516 /* We want to be within half a second before the target,
1517 or before the target and half less or equal to the max
1518 packet size left to search in */
1519 if (time_threshold > ogg->push_seek_time_target)
1520 time_threshold = ogg->push_seek_time_target;
1521 close_enough = ogg->push_last_seek_time < ogg->push_seek_time_target
1522 && (ogg->push_last_seek_time >=
1523 ogg->push_seek_time_target - time_threshold
1524 || ogg->push_offset1 <= ogg->push_offset0 + byte_threshold);
1525 GST_DEBUG_OBJECT (ogg,
1526 "testing if we're close enough: %" GST_TIME_FORMAT " <= %"
1527 GST_TIME_FORMAT " < %" GST_TIME_FORMAT ", or %" G_GUINT64_FORMAT
1528 " <= %" G_GUINT64_FORMAT " ? %s",
1529 GST_TIME_ARGS (ogg->push_seek_time_target - time_threshold),
1530 GST_TIME_ARGS (ogg->push_last_seek_time),
1531 GST_TIME_ARGS (ogg->push_seek_time_target),
1532 ogg->push_offset1 - ogg->push_offset0, byte_threshold,
1533 close_enough ? "Yes" : "No");
1536 if (close_enough || best == ogg->push_last_seek_offset) {
1537 if (ogg->push_state == PUSH_BISECT1) {
1538 /* we now know the time segment we'll have to search for
1539 the second bisection */
1540 ogg->push_time0 = ogg->push_start_time;
1541 ogg->push_offset0 = 0;
1543 GST_DEBUG_OBJECT (ogg,
1544 "Seek to %" GST_TIME_FORMAT
1545 " (%lx) done, now gathering pages for all non-sparse streams",
1546 GST_TIME_ARGS (ogg->push_seek_time_target), (long) granpos);
1547 ogg->push_state = PUSH_LINEAR1;
1549 /* If we're asked for an accurate seek, we'll go forward till
1550 we get to the original seek target time, else we'll just drop
1551 here at the keyframe */
1552 if (ogg->push_seek_flags & GST_SEEK_FLAG_ACCURATE) {
1553 GST_INFO_OBJECT (ogg,
1554 "Seek to keyframe at %" GST_TIME_FORMAT " done (we're at %"
1555 GST_TIME_FORMAT "), skipping to original target (%"
1556 GST_TIME_FORMAT ")",
1557 GST_TIME_ARGS (ogg->push_seek_time_target),
1558 GST_TIME_ARGS (sync_time),
1559 GST_TIME_ARGS (ogg->push_seek_time_original_target));
1560 ogg->push_state = PUSH_LINEAR2;
1562 GST_INFO_OBJECT (ogg, "Seek to keyframe done, playing");
1564 /* we're synced to the seek target, so flush stream and stuff
1565 any queued pages into the stream so we start decoding there */
1566 ogg->push_state = PUSH_PLAYING;
1568 gst_ogg_demux_update_bisection_stats (ogg);
1571 } else if (ogg->push_state == PUSH_LINEAR1) {
1572 if (pad->push_kf_time == GST_CLOCK_TIME_NONE) {
1573 GstClockTime earliest_keyframe_time;
1575 gst_ogg_demux_record_keyframe_time (ogg, pad, granpos);
1576 GST_DEBUG_OBJECT (ogg,
1577 "Previous keyframe for %s stream at %" GST_TIME_FORMAT,
1578 gst_ogg_stream_get_media_type (&pad->map),
1579 GST_TIME_ARGS (pad->push_kf_time));
1580 earliest_keyframe_time = gst_ogg_demux_get_earliest_keyframe_time (ogg);
1581 if (earliest_keyframe_time != GST_CLOCK_TIME_NONE) {
1582 if (earliest_keyframe_time > ogg->push_last_seek_time) {
1583 GST_INFO_OBJECT (ogg,
1584 "All non sparse streams now have a previous keyframe time, "
1585 "and we already decoded it, switching to playing");
1586 ogg->push_state = PUSH_PLAYING;
1587 gst_ogg_demux_update_bisection_stats (ogg);
1589 GST_INFO_OBJECT (ogg,
1590 "All non sparse streams now have a previous keyframe time, "
1591 "bisecting again to %" GST_TIME_FORMAT,
1592 GST_TIME_ARGS (earliest_keyframe_time));
1594 ogg->push_seek_time_target = earliest_keyframe_time;
1595 ogg->push_offset0 = 0;
1596 ogg->push_time0 = ogg->push_start_time;
1597 ogg->push_offset1 = ogg->push_last_seek_offset;
1598 ogg->push_time1 = ogg->push_last_seek_time;
1599 ogg->push_prev_seek_time = GST_CLOCK_TIME_NONE;
1600 ogg->seek_secant = FALSE;
1601 ogg->seek_undershot = FALSE;
1603 ogg->push_state = PUSH_BISECT2;
1604 best = gst_ogg_demux_estimate_bisection_target (ogg, 1.0f);
1610 if (ogg->push_state == PUSH_BISECT1 || ogg->push_state == PUSH_BISECT2) {
1613 ogg_sync_reset (&ogg->sync);
1614 for (i = 0; i < ogg->building_chain->streams->len; i++) {
1616 g_array_index (ogg->building_chain->streams, GstOggPad *, i);
1618 pad->push_sync_time = GST_CLOCK_TIME_NONE;
1619 ogg_stream_reset (&pad->map.stream);
1622 GST_DEBUG_OBJECT (ogg,
1623 "seeking to %" G_GINT64_FORMAT " - %" G_GINT64_FORMAT, best,
1626 g_assert (best != -1);
1627 ogg->push_bisection_steps[ogg->push_state == PUSH_BISECT2 ? 1 : 0]++;
1629 gst_event_new_seek (ogg->push_seek_rate, GST_FORMAT_BYTES,
1630 ogg->push_seek_flags, GST_SEEK_TYPE_SET, best,
1631 GST_SEEK_TYPE_NONE, -1);
1633 GST_PUSH_UNLOCK (ogg);
1634 res = gst_pad_push_event (ogg->sinkpad, sevent);
1636 /* We failed to send the seek event, notify the pipeline */
1637 GST_ELEMENT_ERROR (ogg, RESOURCE, SEEK, (NULL), ("Failed to seek"));
1638 return GST_FLOW_ERROR;
1640 return GST_FLOW_SKIP_PUSH;
1643 if (ogg->push_state != PUSH_PLAYING) {
1644 GST_PUSH_UNLOCK (ogg);
1645 return GST_FLOW_SKIP_PUSH;
1648 GST_PUSH_UNLOCK (ogg);
1654 GST_WARNING_OBJECT (ogg,
1655 "ogg stream choked on page (serial %08x), "
1656 "resetting stream", pad->map.serialno);
1657 gst_ogg_pad_reset (pad);
1658 /* we continue to recover */
1659 return GST_FLOW_SKIP_PUSH;
1663 /* submit a page to an oggpad, this function will then submit all
1664 * the packets in the page.
1666 static GstFlowReturn
1667 gst_ogg_pad_submit_page (GstOggPad * pad, ogg_page * page)
1669 GstFlowReturn result = GST_FLOW_OK;
1671 gboolean continued = FALSE;
1675 /* for negative rates we read pages backwards and must therefore be careful
1676 * with continued pages */
1677 if (ogg->segment.rate < 0.0) {
1680 continued = ogg_page_continued (page);
1682 /* number of completed packets in the page */
1683 npackets = ogg_page_packets (page);
1685 /* page is not continued so it contains at least one packet start. It's
1686 * possible that no packet ends on this page (npackets == 0). In that
1687 * case, the next (continued) page(s) we kept contain the remainder of the
1688 * packets. We mark npackets=1 to make us start decoding the pages in the
1689 * remainder of the algorithm. */
1693 GST_LOG_OBJECT (ogg, "continued: %d, %d packets", continued, npackets);
1695 if (npackets == 0) {
1696 GST_LOG_OBJECT (ogg, "no decodable packets, we need a previous page");
1701 /* keep track of time in push mode */
1702 if (!ogg->pullmode) {
1703 result = gst_ogg_pad_handle_push_mode_state (pad, page);
1704 if (result == GST_FLOW_SKIP_PUSH)
1706 if (result != GST_FLOW_OK)
1710 if (page->header_len + page->body_len > ogg->max_page_size)
1711 ogg->max_page_size = page->header_len + page->body_len;
1713 if (ogg_stream_pagein (&pad->map.stream, page) != 0)
1716 /* flush all packets in the stream layer, this might not give a packet if
1717 * the page had no packets finishing on the page (npackets == 0). */
1718 result = gst_ogg_pad_stream_out (pad, 0);
1720 if (pad->continued) {
1723 /* now send the continued pages to the stream layer */
1724 while (pad->continued) {
1725 ogg_page *p = (ogg_page *) pad->continued->data;
1727 GST_LOG_OBJECT (ogg, "submitting continued page %p", p);
1728 if (ogg_stream_pagein (&pad->map.stream, p) != 0)
1731 pad->continued = g_list_delete_link (pad->continued, pad->continued);
1734 gst_ogg_page_free (p);
1737 GST_LOG_OBJECT (ogg, "flushing last continued packet");
1738 /* flush 1 continued packet in the stream layer */
1739 result = gst_ogg_pad_stream_out (pad, 1);
1741 /* flush all remaining packets, we pushed them in the previous round.
1742 * We don't use _reset() because we still want to get the discont when
1743 * we submit a next page. */
1744 while (ogg_stream_packetout (&pad->map.stream, &packet) != 0);
1748 /* keep continued pages (only in reverse mode) */
1750 ogg_page *p = gst_ogg_page_copy (page);
1752 GST_LOG_OBJECT (ogg, "keeping continued page %p", p);
1753 pad->continued = g_list_prepend (pad->continued, p);
1760 GST_WARNING_OBJECT (ogg,
1761 "ogg stream choked on page (serial %08x), "
1762 "resetting stream", pad->map.serialno);
1763 gst_ogg_pad_reset (pad);
1764 /* we continue to recover */
1770 static GstOggChain *
1771 gst_ogg_chain_new (GstOggDemux * ogg)
1773 GstOggChain *chain = g_slice_new0 (GstOggChain);
1775 GST_DEBUG_OBJECT (ogg, "creating new chain %p", chain);
1779 chain->have_bos = FALSE;
1780 chain->streams = g_array_new (FALSE, TRUE, sizeof (GstOggPad *));
1781 chain->begin_time = GST_CLOCK_TIME_NONE;
1782 chain->segment_start = GST_CLOCK_TIME_NONE;
1783 chain->segment_stop = GST_CLOCK_TIME_NONE;
1784 chain->total_time = GST_CLOCK_TIME_NONE;
1790 gst_ogg_chain_free (GstOggChain * chain)
1794 for (i = 0; i < chain->streams->len; i++) {
1795 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
1797 gst_object_unref (pad);
1799 g_array_free (chain->streams, TRUE);
1800 g_slice_free (GstOggChain, chain);
1804 gst_ogg_pad_mark_discont (GstOggPad * pad)
1806 pad->discont = TRUE;
1807 pad->map.last_size = 0;
1811 gst_ogg_chain_mark_discont (GstOggChain * chain)
1815 for (i = 0; i < chain->streams->len; i++) {
1816 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
1818 gst_ogg_pad_mark_discont (pad);
1823 gst_ogg_chain_reset (GstOggChain * chain)
1827 for (i = 0; i < chain->streams->len; i++) {
1828 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
1830 gst_ogg_pad_reset (pad);
1835 gst_ogg_chain_new_stream (GstOggChain * chain, guint32 serialno)
1841 GST_DEBUG_OBJECT (chain->ogg,
1842 "creating new stream %08x in chain %p", serialno, chain);
1844 name = g_strdup_printf ("serial_%08x", serialno);
1845 ret = g_object_new (GST_TYPE_OGG_PAD, "name", name, NULL);
1847 /* we own this one */
1848 gst_object_ref (ret);
1849 gst_object_sink (ret);
1851 GST_PAD_DIRECTION (ret) = GST_PAD_SRC;
1852 gst_ogg_pad_mark_discont (ret);
1855 ret->ogg = chain->ogg;
1857 ret->map.serialno = serialno;
1858 if (ogg_stream_init (&ret->map.stream, serialno) != 0)
1861 /* FIXME: either do something with it or remove it */
1862 list = gst_tag_list_new ();
1863 gst_tag_list_add (list, GST_TAG_MERGE_REPLACE, GST_TAG_SERIAL, serialno,
1865 gst_tag_list_free (list);
1867 GST_DEBUG_OBJECT (chain->ogg,
1868 "created new ogg src %p for stream with serial %08x", ret, serialno);
1870 g_array_append_val (chain->streams, ret);
1877 GST_ERROR ("Could not initialize ogg_stream struct for serial %08x",
1879 gst_object_unref (ret);
1885 gst_ogg_chain_get_stream (GstOggChain * chain, guint32 serialno)
1889 for (i = 0; i < chain->streams->len; i++) {
1890 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
1892 if (pad->map.serialno == serialno)
1899 gst_ogg_chain_has_stream (GstOggChain * chain, guint32 serialno)
1901 return gst_ogg_chain_get_stream (chain, serialno) != NULL;
1904 /* signals and args */
1917 static GstStaticPadTemplate ogg_demux_src_template_factory =
1918 GST_STATIC_PAD_TEMPLATE ("src_%d",
1921 GST_STATIC_CAPS_ANY);
1923 static GstStaticPadTemplate ogg_demux_sink_template_factory =
1924 GST_STATIC_PAD_TEMPLATE ("sink",
1927 GST_STATIC_CAPS ("application/ogg; application/x-annodex")
1930 static void gst_ogg_demux_finalize (GObject * object);
1932 static GstFlowReturn gst_ogg_demux_read_chain (GstOggDemux * ogg,
1933 GstOggChain ** chain);
1934 static GstFlowReturn gst_ogg_demux_read_end_chain (GstOggDemux * ogg,
1935 GstOggChain * chain);
1937 static gboolean gst_ogg_demux_sink_event (GstPad * pad, GstEvent * event);
1938 static void gst_ogg_demux_loop (GstOggPad * pad);
1939 static GstFlowReturn gst_ogg_demux_chain (GstPad * pad, GstBuffer * buffer);
1940 static gboolean gst_ogg_demux_sink_activate (GstPad * sinkpad);
1941 static gboolean gst_ogg_demux_sink_activate_pull (GstPad * sinkpad,
1943 static gboolean gst_ogg_demux_sink_activate_push (GstPad * sinkpad,
1945 static GstStateChangeReturn gst_ogg_demux_change_state (GstElement * element,
1946 GstStateChange transition);
1948 static void gst_ogg_print (GstOggDemux * demux);
1950 GST_BOILERPLATE (GstOggDemux, gst_ogg_demux, GstElement, GST_TYPE_ELEMENT);
1953 gst_ogg_demux_base_init (gpointer g_class)
1955 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
1957 gst_element_class_set_details_simple (element_class,
1958 "Ogg demuxer", "Codec/Demuxer",
1959 "demux ogg streams (info about ogg: http://xiph.org)",
1960 "Wim Taymans <wim@fluendo.com>");
1962 gst_element_class_add_static_pad_template (element_class,
1963 &ogg_demux_sink_template_factory);
1964 gst_element_class_add_static_pad_template (element_class,
1965 &ogg_demux_src_template_factory);
1969 gst_ogg_demux_class_init (GstOggDemuxClass * klass)
1971 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
1972 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
1974 gstelement_class->change_state = gst_ogg_demux_change_state;
1975 gstelement_class->send_event = gst_ogg_demux_receive_event;
1977 gobject_class->finalize = gst_ogg_demux_finalize;
1981 gst_ogg_demux_init (GstOggDemux * ogg, GstOggDemuxClass * g_class)
1983 /* create the sink pad */
1985 gst_pad_new_from_static_template (&ogg_demux_sink_template_factory,
1988 gst_pad_set_event_function (ogg->sinkpad, gst_ogg_demux_sink_event);
1989 gst_pad_set_chain_function (ogg->sinkpad, gst_ogg_demux_chain);
1990 gst_pad_set_activate_function (ogg->sinkpad, gst_ogg_demux_sink_activate);
1991 gst_pad_set_activatepull_function (ogg->sinkpad,
1992 gst_ogg_demux_sink_activate_pull);
1993 gst_pad_set_activatepush_function (ogg->sinkpad,
1994 gst_ogg_demux_sink_activate_push);
1995 gst_element_add_pad (GST_ELEMENT (ogg), ogg->sinkpad);
1997 ogg->chain_lock = g_mutex_new ();
1998 ogg->push_lock = g_mutex_new ();
1999 ogg->chains = g_array_new (FALSE, TRUE, sizeof (GstOggChain *));
2001 ogg->stats_nbisections = 0;
2002 ogg->stats_bisection_steps[0] = 0;
2003 ogg->stats_bisection_steps[1] = 0;
2004 ogg->stats_bisection_max_steps[0] = 0;
2005 ogg->stats_bisection_max_steps[1] = 0;
2007 ogg->newsegment = NULL;
2011 gst_ogg_demux_finalize (GObject * object)
2015 ogg = GST_OGG_DEMUX (object);
2017 g_array_free (ogg->chains, TRUE);
2018 g_mutex_free (ogg->chain_lock);
2019 g_mutex_free (ogg->push_lock);
2020 ogg_sync_clear (&ogg->sync);
2022 if (ogg->newsegment)
2023 gst_event_unref (ogg->newsegment);
2025 G_OBJECT_CLASS (parent_class)->finalize (object);
2029 gst_ogg_demux_reset_streams (GstOggDemux * ogg)
2034 chain = ogg->current_chain;
2038 for (i = 0; i < chain->streams->len; i++) {
2039 GstOggPad *stream = g_array_index (chain->streams, GstOggPad *, i);
2041 stream->start_time = -1;
2042 stream->map.accumulated_granule = 0;
2044 ogg->building_chain = chain;
2045 GST_DEBUG_OBJECT (ogg, "Resetting current chain");
2046 ogg->current_chain = NULL;
2051 gst_ogg_demux_sink_event (GstPad * pad, GstEvent * event)
2056 ogg = GST_OGG_DEMUX (gst_pad_get_parent (pad));
2058 switch (GST_EVENT_TYPE (event)) {
2059 case GST_EVENT_FLUSH_START:
2060 res = gst_ogg_demux_send_event (ogg, event);
2062 case GST_EVENT_FLUSH_STOP:
2063 GST_DEBUG_OBJECT (ogg, "got a flush stop event");
2064 ogg_sync_reset (&ogg->sync);
2065 res = gst_ogg_demux_send_event (ogg, event);
2066 if (ogg->pullmode || ogg->push_state != PUSH_DURATION) {
2067 /* it's starting to feel reaaaally dirty :(
2068 if we're on a spliced seek to get duration, don't reset streams,
2069 we'll need them for the delayed seek */
2070 gst_ogg_demux_reset_streams (ogg);
2073 case GST_EVENT_NEWSEGMENT:
2074 GST_DEBUG_OBJECT (ogg, "got a new segment event");
2078 gdouble rate, arate;
2079 gint64 start, stop, time;
2081 gst_event_parse_new_segment_full (event, &update, &rate, &arate,
2082 &format, &start, &stop, &time);
2083 if (format == GST_FORMAT_BYTES) {
2084 GST_PUSH_LOCK (ogg);
2085 ogg->push_byte_offset = start;
2086 ogg->push_last_seek_offset = start;
2087 GST_PUSH_UNLOCK (ogg);
2089 GST_WARNING_OBJECT (ogg, "unexpected segment format: %s",
2090 gst_format_get_name (format));
2093 gst_event_unref (event);
2098 GST_DEBUG_OBJECT (ogg, "got an EOS event");
2100 /* This would be what is needed (recover from EOS by going on to
2101 the next step (issue the delayed seek)), but it does not work
2102 if there is a queue2 upstream - see more details comment in
2103 gst_ogg_pad_submit_page.
2104 If I could find a way to bypass queue2 behavior, this should
2106 GST_PUSH_LOCK (ogg);
2107 if (ogg->push_state == PUSH_DURATION) {
2108 GST_DEBUG_OBJECT (ogg, "Got EOS while determining length");
2109 res = gst_ogg_demux_seek_back_after_push_duration_check_unlock (ogg);
2110 if (res != GST_FLOW_OK) {
2111 GST_DEBUG_OBJECT (ogg, "Error seeking back after duration check: %d",
2116 GST_PUSH_UNLOCK (ogg);
2118 res = gst_ogg_demux_send_event (ogg, event);
2119 if (ogg->current_chain == NULL) {
2120 GST_ELEMENT_ERROR (ogg, STREAM, DEMUX, (NULL),
2121 ("can't get first chain"));
2126 res = gst_ogg_demux_send_event (ogg, event);
2129 gst_object_unref (ogg);
2134 /* submit the given buffer to the ogg sync */
2135 static GstFlowReturn
2136 gst_ogg_demux_submit_buffer (GstOggDemux * ogg, GstBuffer * buffer)
2141 GstFlowReturn ret = GST_FLOW_OK;
2143 size = GST_BUFFER_SIZE (buffer);
2144 data = GST_BUFFER_DATA (buffer);
2146 GST_DEBUG_OBJECT (ogg, "submitting %u bytes", size);
2147 if (G_UNLIKELY (size == 0))
2150 oggbuffer = ogg_sync_buffer (&ogg->sync, size);
2151 if (G_UNLIKELY (oggbuffer == NULL))
2154 memcpy (oggbuffer, data, size);
2155 if (G_UNLIKELY (ogg_sync_wrote (&ogg->sync, size) < 0))
2158 if (!ogg->pullmode) {
2159 GST_PUSH_LOCK (ogg);
2160 ogg->push_byte_offset += size;
2161 GST_PUSH_UNLOCK (ogg);
2165 gst_buffer_unref (buffer);
2172 GST_ELEMENT_ERROR (ogg, STREAM, DECODE,
2173 (NULL), ("failed to get ogg sync buffer"));
2174 ret = GST_FLOW_ERROR;
2179 GST_ELEMENT_ERROR (ogg, STREAM, DECODE,
2180 (NULL), ("failed to write %d bytes to the sync buffer", size));
2181 ret = GST_FLOW_ERROR;
2186 /* in random access mode this code updates the current read position
2187 * and resets the ogg sync buffer so that the next read will happen
2188 * from this new location.
2191 gst_ogg_demux_seek (GstOggDemux * ogg, gint64 offset)
2193 GST_LOG_OBJECT (ogg, "seeking to %" G_GINT64_FORMAT, offset);
2195 ogg->offset = offset;
2196 ogg->read_offset = offset;
2197 ogg_sync_reset (&ogg->sync);
2200 /* read more data from the current offset and submit to
2201 * the ogg sync layer.
2203 static GstFlowReturn
2204 gst_ogg_demux_get_data (GstOggDemux * ogg, gint64 end_offset)
2209 GST_LOG_OBJECT (ogg,
2210 "get data %" G_GINT64_FORMAT " %" G_GINT64_FORMAT " %" G_GINT64_FORMAT,
2211 ogg->read_offset, ogg->length, end_offset);
2213 if (end_offset > 0 && ogg->read_offset >= end_offset)
2214 goto boundary_reached;
2216 if (ogg->read_offset == ogg->length)
2219 ret = gst_pad_pull_range (ogg->sinkpad, ogg->read_offset, CHUNKSIZE, &buffer);
2220 if (ret != GST_FLOW_OK)
2223 ogg->read_offset += GST_BUFFER_SIZE (buffer);
2225 ret = gst_ogg_demux_submit_buffer (ogg, buffer);
2232 GST_LOG_OBJECT (ogg, "reached boundary");
2233 return GST_FLOW_LIMIT;
2237 GST_LOG_OBJECT (ogg, "reached EOS");
2238 return GST_FLOW_UNEXPECTED;
2242 GST_WARNING_OBJECT (ogg, "got %d (%s) from pull range", ret,
2243 gst_flow_get_name (ret));
2248 /* Read the next page from the current offset.
2249 * boundary: number of bytes ahead we allow looking for;
2252 * @offset will contain the offset the next page starts at when this function
2253 * returns GST_FLOW_OK.
2255 * GST_FLOW_UNEXPECTED is returned on EOS.
2257 * GST_FLOW_LIMIT is returned when we did not find a page before the
2258 * boundary. If @boundary is -1, this is never returned.
2260 * Any other error returned while retrieving data from the peer is returned as
2263 static GstFlowReturn
2264 gst_ogg_demux_get_next_page (GstOggDemux * ogg, ogg_page * og,
2265 gint64 boundary, gint64 * offset)
2267 gint64 end_offset = -1;
2270 GST_LOG_OBJECT (ogg,
2271 "get next page, current offset %" G_GINT64_FORMAT ", bytes boundary %"
2272 G_GINT64_FORMAT, ogg->offset, boundary);
2275 end_offset = ogg->offset + boundary;
2280 if (end_offset > 0 && ogg->offset >= end_offset)
2281 goto boundary_reached;
2283 more = ogg_sync_pageseek (&ogg->sync, og);
2285 GST_LOG_OBJECT (ogg, "pageseek gave %ld", more);
2288 /* skipped n bytes */
2289 ogg->offset -= more;
2290 GST_LOG_OBJECT (ogg, "skipped %ld bytes, offset %" G_GINT64_FORMAT,
2292 } else if (more == 0) {
2293 /* we need more data */
2295 goto boundary_reached;
2297 GST_LOG_OBJECT (ogg, "need more data");
2298 ret = gst_ogg_demux_get_data (ogg, end_offset);
2299 if (ret != GST_FLOW_OK)
2302 gint64 res_offset = ogg->offset;
2304 /* got a page. Return the offset at the page beginning,
2305 advance the internal offset past the page end */
2307 *offset = res_offset;
2310 ogg->offset += more;
2312 GST_LOG_OBJECT (ogg,
2313 "got page at %" G_GINT64_FORMAT ", serial %08x, end at %"
2314 G_GINT64_FORMAT ", granule %" G_GINT64_FORMAT, res_offset,
2315 ogg_page_serialno (og), ogg->offset,
2316 (gint64) ogg_page_granulepos (og));
2320 GST_LOG_OBJECT (ogg, "returning %d", ret);
2327 GST_LOG_OBJECT (ogg,
2328 "offset %" G_GINT64_FORMAT " >= end_offset %" G_GINT64_FORMAT,
2329 ogg->offset, end_offset);
2330 return GST_FLOW_LIMIT;
2334 /* from the current offset, find the previous page, seeking backwards
2335 * until we find the page.
2337 static GstFlowReturn
2338 gst_ogg_demux_get_prev_page (GstOggDemux * ogg, ogg_page * og, gint64 * offset)
2341 gint64 begin = ogg->offset;
2343 gint64 cur_offset = -1;
2345 GST_LOG_OBJECT (ogg, "getting page before %" G_GINT64_FORMAT, begin);
2347 while (cur_offset == -1) {
2352 /* seek CHUNKSIZE back */
2353 gst_ogg_demux_seek (ogg, begin);
2355 /* now continue reading until we run out of data, if we find a page
2356 * start, we save it. It might not be the final page as there could be
2357 * another page after this one. */
2358 while (ogg->offset < end) {
2362 gst_ogg_demux_get_next_page (ogg, og, end - ogg->offset, &new_offset);
2363 /* we hit the upper limit, offset contains the last page start */
2364 if (ret == GST_FLOW_LIMIT) {
2365 GST_LOG_OBJECT (ogg, "hit limit");
2368 /* something went wrong */
2369 if (ret == GST_FLOW_UNEXPECTED) {
2371 GST_LOG_OBJECT (ogg, "got unexpected");
2372 } else if (ret != GST_FLOW_OK) {
2373 GST_LOG_OBJECT (ogg, "got error %d", ret);
2377 GST_LOG_OBJECT (ogg, "found page at %" G_GINT64_FORMAT, new_offset);
2379 /* offset is next page start */
2380 cur_offset = new_offset;
2384 GST_LOG_OBJECT (ogg, "found previous page at %" G_GINT64_FORMAT, cur_offset);
2386 /* we have the offset. Actually snork and hold the page now */
2387 gst_ogg_demux_seek (ogg, cur_offset);
2388 ret = gst_ogg_demux_get_next_page (ogg, og, -1, NULL);
2389 if (ret != GST_FLOW_OK) {
2390 GST_WARNING_OBJECT (ogg, "can't get last page at %" G_GINT64_FORMAT,
2392 /* this shouldn't be possible */
2397 *offset = cur_offset;
2403 gst_ogg_demux_deactivate_current_chain (GstOggDemux * ogg)
2406 GstOggChain *chain = ogg->current_chain;
2411 GST_DEBUG_OBJECT (ogg, "deactivating chain %p", chain);
2413 /* send EOS on all the pads */
2414 for (i = 0; i < chain->streams->len; i++) {
2415 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
2421 event = gst_event_new_eos ();
2422 gst_event_set_seqnum (event, ogg->seqnum);
2423 gst_pad_push_event (GST_PAD_CAST (pad), event);
2425 GST_DEBUG_OBJECT (ogg, "removing pad %" GST_PTR_FORMAT, pad);
2427 /* deactivate first */
2428 gst_pad_set_active (GST_PAD_CAST (pad), FALSE);
2430 gst_element_remove_pad (GST_ELEMENT (ogg), GST_PAD_CAST (pad));
2434 /* With push mode seeking implemented, we can now seek back to the chain,
2435 so we do not destroy it */
2436 GST_DEBUG_OBJECT (ogg, "Resetting current chain");
2437 ogg->current_chain = NULL;
2443 gst_ogg_demux_set_header_on_caps (GstOggDemux * ogg, GstCaps * caps,
2446 GstStructure *structure;
2447 GValue array = { 0 };
2449 GST_LOG_OBJECT (ogg, "caps: %" GST_PTR_FORMAT, caps);
2451 if (G_UNLIKELY (!caps))
2453 if (G_UNLIKELY (!headers))
2456 caps = gst_caps_make_writable (caps);
2457 structure = gst_caps_get_structure (caps, 0);
2459 g_value_init (&array, GST_TYPE_ARRAY);
2462 GValue value = { 0 };
2464 ogg_packet *op = headers->data;
2466 buffer = gst_buffer_new_and_alloc (op->bytes);
2467 memcpy (GST_BUFFER_DATA (buffer), op->packet, op->bytes);
2468 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_IN_CAPS);
2469 g_value_init (&value, GST_TYPE_BUFFER);
2470 gst_value_take_buffer (&value, buffer);
2471 gst_value_array_append_value (&array, &value);
2472 g_value_unset (&value);
2473 headers = headers->next;
2476 gst_structure_set_value (structure, "streamheader", &array);
2477 g_value_unset (&array);
2478 GST_LOG_OBJECT (ogg, "here are the newly set caps: %" GST_PTR_FORMAT, caps);
2484 gst_ogg_demux_push_queued_buffers (GstOggDemux * ogg, GstOggPad * pad)
2488 /* push queued packets */
2489 for (walk = pad->map.queued; walk; walk = g_list_next (walk)) {
2490 ogg_packet *p = walk->data;
2492 gst_ogg_demux_chain_peer (pad, p, TRUE);
2493 _ogg_packet_free (p);
2495 /* and free the queued buffers */
2496 g_list_free (pad->map.queued);
2497 pad->map.queued = NULL;
2501 gst_ogg_demux_activate_chain (GstOggDemux * ogg, GstOggChain * chain,
2505 gint bitrate, idx_bitrate;
2507 g_return_val_if_fail (chain != NULL, FALSE);
2509 if (chain == ogg->current_chain) {
2511 gst_event_unref (event);
2513 for (i = 0; i < chain->streams->len; i++) {
2514 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
2515 gst_ogg_demux_push_queued_buffers (ogg, pad);
2521 GST_DEBUG_OBJECT (ogg, "activating chain %p", chain);
2523 bitrate = idx_bitrate = 0;
2525 /* first add the pads */
2526 for (i = 0; i < chain->streams->len; i++) {
2529 pad = g_array_index (chain->streams, GstOggPad *, i);
2531 if (pad->map.idx_bitrate)
2532 idx_bitrate = MAX (idx_bitrate, pad->map.idx_bitrate);
2534 bitrate += pad->map.bitrate;
2537 gst_ogg_pad_mark_discont (pad);
2538 pad->last_ret = GST_FLOW_OK;
2540 if (pad->map.is_skeleton || pad->added || GST_PAD_CAPS (pad) == NULL)
2543 GST_DEBUG_OBJECT (ogg, "adding pad %" GST_PTR_FORMAT, pad);
2545 /* activate first */
2546 gst_pad_set_active (GST_PAD_CAST (pad), TRUE);
2548 gst_element_add_pad (GST_ELEMENT (ogg), GST_PAD_CAST (pad));
2551 /* prefer the index bitrate over the ones encoded in the streams */
2552 ogg->bitrate = (idx_bitrate ? idx_bitrate : bitrate);
2554 /* after adding the new pads, remove the old pads */
2555 gst_ogg_demux_deactivate_current_chain (ogg);
2557 GST_DEBUG_OBJECT (ogg, "Setting current chain to %p", chain);
2558 ogg->current_chain = chain;
2560 /* we are finished now */
2561 gst_element_no_more_pads (GST_ELEMENT (ogg));
2563 /* FIXME, must be sent from the streaming thread */
2565 gst_ogg_demux_send_event (ogg, event);
2567 gst_element_found_tags (GST_ELEMENT_CAST (ogg),
2568 gst_tag_list_new_full (GST_TAG_CONTAINER_FORMAT, "Ogg", NULL));
2571 GST_DEBUG_OBJECT (ogg, "starting chain");
2573 /* then send out any headers and queued packets */
2574 for (i = 0; i < chain->streams->len; i++) {
2578 pad = g_array_index (chain->streams, GstOggPad *, i);
2580 /* FIXME also streaming thread */
2581 if (pad->map.taglist) {
2582 GST_DEBUG_OBJECT (ogg, "pushing tags");
2583 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (ogg),
2584 GST_PAD_CAST (pad), pad->map.taglist);
2585 pad->map.taglist = NULL;
2588 /* Set headers on caps */
2590 gst_ogg_demux_set_header_on_caps (ogg, pad->map.caps, pad->map.headers);
2591 gst_pad_set_caps (GST_PAD_CAST (pad), pad->map.caps);
2593 GST_DEBUG_OBJECT (ogg, "pushing headers");
2595 for (walk = pad->map.headers; walk; walk = g_list_next (walk)) {
2596 ogg_packet *p = walk->data;
2598 gst_ogg_demux_chain_peer (pad, p, TRUE);
2601 GST_DEBUG_OBJECT (ogg, "pushing queued buffers");
2602 gst_ogg_demux_push_queued_buffers (ogg, pad);
2608 do_binary_search (GstOggDemux * ogg, GstOggChain * chain, gint64 begin,
2609 gint64 end, gint64 begintime, gint64 endtime, gint64 target,
2618 GST_DEBUG_OBJECT (ogg,
2619 "chain offset %" G_GINT64_FORMAT ", end offset %" G_GINT64_FORMAT,
2621 GST_DEBUG_OBJECT (ogg,
2622 "chain begin time %" GST_TIME_FORMAT ", end time %" GST_TIME_FORMAT,
2623 GST_TIME_ARGS (begintime), GST_TIME_ARGS (endtime));
2624 GST_DEBUG_OBJECT (ogg, "target %" GST_TIME_FORMAT, GST_TIME_ARGS (target));
2626 /* perform the seek */
2627 while (begin < end) {
2630 if ((end - begin < CHUNKSIZE) || (endtime == begintime)) {
2633 /* take a (pretty decent) guess, avoiding overflow */
2634 gint64 rate = (end - begin) * GST_MSECOND / (endtime - begintime);
2636 bisect = (target - begintime) / GST_MSECOND * rate + begin - CHUNKSIZE;
2638 if (bisect <= begin)
2640 GST_DEBUG_OBJECT (ogg, "Initial guess: %" G_GINT64_FORMAT, bisect);
2642 gst_ogg_demux_seek (ogg, bisect);
2644 while (begin < end) {
2647 GST_DEBUG_OBJECT (ogg,
2648 "after seek, bisect %" G_GINT64_FORMAT ", begin %" G_GINT64_FORMAT
2649 ", end %" G_GINT64_FORMAT, bisect, begin, end);
2651 ret = gst_ogg_demux_get_next_page (ogg, &og, end - ogg->offset, &result);
2652 GST_LOG_OBJECT (ogg, "looking for next page returned %" G_GINT64_FORMAT,
2655 if (ret == GST_FLOW_LIMIT) {
2656 /* we hit the upper limit, go back a bit */
2657 if (bisect <= begin + 1) {
2658 end = begin; /* found it */
2663 bisect -= CHUNKSIZE;
2664 if (bisect <= begin)
2667 gst_ogg_demux_seek (ogg, bisect);
2669 } else if (ret == GST_FLOW_OK) {
2670 /* found offset of next ogg page */
2672 GstClockTime granuletime;
2675 /* get the granulepos */
2676 GST_LOG_OBJECT (ogg, "found next ogg page at %" G_GINT64_FORMAT,
2678 granulepos = ogg_page_granulepos (&og);
2679 if (granulepos == -1) {
2680 GST_LOG_OBJECT (ogg, "granulepos of next page is -1");
2684 /* get the stream */
2685 pad = gst_ogg_chain_get_stream (chain, ogg_page_serialno (&og));
2686 if (pad == NULL || pad->map.is_skeleton)
2689 /* convert granulepos to time */
2690 granuletime = gst_ogg_stream_get_end_time_for_granulepos (&pad->map,
2692 if (granuletime < pad->start_time)
2695 GST_LOG_OBJECT (ogg, "granulepos %" G_GINT64_FORMAT " maps to time %"
2696 GST_TIME_FORMAT, granulepos, GST_TIME_ARGS (granuletime));
2698 granuletime -= pad->start_time;
2699 granuletime += chain->begin_time;
2701 GST_DEBUG_OBJECT (ogg,
2702 "found page with granule %" G_GINT64_FORMAT " and time %"
2703 GST_TIME_FORMAT, granulepos, GST_TIME_ARGS (granuletime));
2705 if (granuletime < target) {
2706 best = result; /* raw offset of packet with granulepos */
2707 begin = ogg->offset; /* raw offset of next page */
2708 begintime = granuletime;
2710 bisect = begin; /* *not* begin + 1 */
2712 if (bisect <= begin + 1) {
2713 end = begin; /* found it */
2715 if (end == ogg->offset) { /* we're pretty close - we'd be stuck in */
2717 bisect -= CHUNKSIZE; /* an endless loop otherwise. */
2718 if (bisect <= begin)
2720 gst_ogg_demux_seek (ogg, bisect);
2723 endtime = granuletime;
2732 GST_DEBUG_OBJECT (ogg, "seeking to %" G_GINT64_FORMAT, best);
2733 gst_ogg_demux_seek (ogg, best);
2741 GST_DEBUG_OBJECT (ogg, "got a seek error");
2747 do_index_search (GstOggDemux * ogg, GstOggChain * chain, gint64 begin,
2748 gint64 end, gint64 begintime, gint64 endtime, gint64 target,
2749 gint64 * p_offset, gint64 * p_timestamp)
2752 guint64 timestamp, offset;
2753 guint64 r_timestamp, r_offset;
2754 gboolean result = FALSE;
2756 target -= begintime;
2761 for (i = 0; i < chain->streams->len; i++) {
2762 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
2765 if (gst_ogg_map_search_index (&pad->map, TRUE, ×tamp, &offset)) {
2766 GST_INFO ("found %" G_GUINT64_FORMAT " at offset %" G_GUINT64_FORMAT,
2769 if (r_offset == -1 || offset < r_offset) {
2771 r_timestamp = timestamp;
2778 *p_timestamp = r_timestamp;
2780 *p_offset = r_offset;
2786 * do seek to time @position, return FALSE or chain and TRUE
2789 gst_ogg_demux_do_seek (GstOggDemux * ogg, GstSegment * segment,
2790 gboolean accurate, gboolean keyframe, GstOggChain ** rchain)
2793 GstOggChain *chain = NULL;
2795 gint64 begintime, endtime;
2796 gint64 target, keytarget;
2801 gint i, pending, len;
2802 gboolean first_parsed_page = TRUE;
2804 position = segment->last_stop;
2806 /* first find the chain to search in */
2807 total = ogg->total_time;
2808 if (ogg->chains->len == 0)
2811 for (i = ogg->chains->len - 1; i >= 0; i--) {
2812 chain = g_array_index (ogg->chains, GstOggChain *, i);
2813 total -= chain->total_time;
2814 if (position >= total)
2818 /* first step, locate page containing the required data */
2819 begin = chain->offset;
2820 end = chain->end_offset;
2821 begintime = chain->begin_time;
2822 endtime = begintime + chain->total_time;
2823 target = position - total + begintime;
2825 if (!do_binary_search (ogg, chain, begin, end, begintime, endtime, target,
2829 /* second step: find pages for all streams, we use the keyframe_granule to keep
2830 * track of which ones we saw. If we have seen a page for each stream we can
2831 * calculate the positions of each keyframe. */
2832 GST_DEBUG_OBJECT (ogg, "find keyframes");
2833 len = pending = chain->streams->len;
2835 /* figure out where the keyframes are */
2842 GstClockTime keyframe_time, granule_time;
2844 ret = gst_ogg_demux_get_next_page (ogg, &og, end - ogg->offset, &result);
2845 GST_LOG_OBJECT (ogg, "looking for next page returned %" G_GINT64_FORMAT,
2847 if (ret == GST_FLOW_LIMIT) {
2848 GST_LOG_OBJECT (ogg, "reached limit");
2850 } else if (ret != GST_FLOW_OK)
2853 /* get the stream */
2854 pad = gst_ogg_chain_get_stream (chain, ogg_page_serialno (&og));
2858 if (pad->map.is_skeleton)
2861 granulepos = ogg_page_granulepos (&og);
2862 if (granulepos == -1 || granulepos == 0) {
2863 GST_LOG_OBJECT (ogg, "granulepos of next page is -1");
2867 /* we only do this the first time we pass here */
2868 if (first_parsed_page) {
2869 /* Now that we have a time reference from the page, we can check
2870 * whether all streams still have pages from here on.
2872 * This would be more elegant before the loop, but getting the page from
2873 * there without breaking anything would be more costly */
2874 granule_time = gst_ogg_stream_get_end_time_for_granulepos (&pad->map,
2876 for (i = 0; i < len; i++) {
2877 GstOggPad *stream = g_array_index (chain->streams, GstOggPad *, i);
2880 /* we already know we have at least one page (the current one)
2881 * for this stream */
2884 if (granule_time > stream->map.total_time)
2885 /* we won't encounter any more pages of this stream, so we don't
2886 * try finding a key frame for it */
2889 first_parsed_page = FALSE;
2893 /* in reverse we want to go past the page with the lower timestamp */
2894 if (segment->rate < 0.0) {
2895 /* get time for this pad */
2896 granule_time = gst_ogg_stream_get_end_time_for_granulepos (&pad->map,
2899 GST_LOG_OBJECT (ogg,
2900 "looking at page with ts %" GST_TIME_FORMAT ", target %"
2901 GST_TIME_FORMAT, GST_TIME_ARGS (granule_time),
2902 GST_TIME_ARGS (target));
2903 if (granule_time < target)
2907 /* we've seen this pad before */
2908 if (pad->keyframe_granule != -1)
2911 /* convert granule of this pad to the granule of the keyframe */
2912 pad->keyframe_granule =
2913 gst_ogg_stream_granulepos_to_key_granule (&pad->map, granulepos);
2914 GST_LOG_OBJECT (ogg, "marking stream granule %" G_GINT64_FORMAT,
2915 pad->keyframe_granule);
2917 /* get time of the keyframe */
2919 gst_ogg_stream_granule_to_time (&pad->map, pad->keyframe_granule);
2920 GST_LOG_OBJECT (ogg,
2921 "stream %08x granule time %" GST_TIME_FORMAT,
2922 pad->map.serialno, GST_TIME_ARGS (keyframe_time));
2924 /* collect smallest value */
2925 if (keyframe_time != -1) {
2926 keyframe_time += begintime;
2927 if (keyframe_time < keytarget)
2928 keytarget = keyframe_time;
2937 /* for negative rates we will get to the keyframe backwards */
2938 if (segment->rate < 0.0)
2941 if (keytarget != target) {
2942 GST_LOG_OBJECT (ogg, "final seek to target %" GST_TIME_FORMAT,
2943 GST_TIME_ARGS (keytarget));
2945 /* last step, seek to the location of the keyframe */
2946 if (!do_binary_search (ogg, chain, begin, end, begintime, endtime,
2950 /* seek back to previous position */
2951 GST_LOG_OBJECT (ogg, "keyframe on target");
2952 gst_ogg_demux_seek (ogg, best);
2957 if (segment->rate > 0.0)
2958 segment->time = keytarget;
2959 segment->last_stop = keytarget - begintime;
2968 GST_DEBUG_OBJECT (ogg, "no chains");
2973 GST_DEBUG_OBJECT (ogg, "got a seek error");
2978 /* does not take ownership of the event */
2980 gst_ogg_demux_perform_seek_pull (GstOggDemux * ogg, GstEvent * event)
2982 GstOggChain *chain = NULL;
2984 gboolean flush, accurate, keyframe;
2988 GstSeekType cur_type, stop_type;
2995 GST_DEBUG_OBJECT (ogg, "seek with event");
2997 gst_event_parse_seek (event, &rate, &format, &flags,
2998 &cur_type, &cur, &stop_type, &stop);
3000 /* we can only seek on time */
3001 if (format != GST_FORMAT_TIME) {
3002 GST_DEBUG_OBJECT (ogg, "can only seek on TIME");
3005 seqnum = gst_event_get_seqnum (event);
3007 GST_DEBUG_OBJECT (ogg, "seek without event");
3011 seqnum = gst_util_seqnum_next ();
3014 GST_DEBUG_OBJECT (ogg, "seek, rate %g", rate);
3016 flush = flags & GST_SEEK_FLAG_FLUSH;
3017 accurate = flags & GST_SEEK_FLAG_ACCURATE;
3018 keyframe = flags & GST_SEEK_FLAG_KEY_UNIT;
3020 /* first step is to unlock the streaming thread if it is
3021 * blocked in a chain call, we do this by starting the flush. because
3022 * we cannot yet hold any streaming lock, we have to protect the chains
3023 * with their own lock. */
3027 tevent = gst_event_new_flush_start ();
3028 gst_event_set_seqnum (tevent, seqnum);
3030 gst_event_ref (tevent);
3031 gst_pad_push_event (ogg->sinkpad, tevent);
3033 GST_CHAIN_LOCK (ogg);
3034 for (i = 0; i < ogg->chains->len; i++) {
3035 GstOggChain *chain = g_array_index (ogg->chains, GstOggChain *, i);
3038 for (j = 0; j < chain->streams->len; j++) {
3039 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, j);
3041 gst_event_ref (tevent);
3042 gst_pad_push_event (GST_PAD (pad), tevent);
3045 GST_CHAIN_UNLOCK (ogg);
3047 gst_event_unref (tevent);
3049 gst_pad_pause_task (ogg->sinkpad);
3052 /* now grab the stream lock so that streaming cannot continue, for
3053 * non flushing seeks when the element is in PAUSED this could block
3055 GST_PAD_STREAM_LOCK (ogg->sinkpad);
3057 if (ogg->segment_running && !flush) {
3058 /* create the segment event to close the current segment */
3059 if ((chain = ogg->current_chain)) {
3061 gint64 chain_start = 0;
3063 if (chain->segment_start != GST_CLOCK_TIME_NONE)
3064 chain_start = chain->segment_start;
3066 newseg = gst_event_new_new_segment (TRUE, ogg->segment.rate,
3067 GST_FORMAT_TIME, ogg->segment.start + chain_start,
3068 ogg->segment.last_stop + chain_start, ogg->segment.time);
3069 /* set the seqnum of the running segment */
3070 gst_event_set_seqnum (newseg, ogg->seqnum);
3072 /* send segment on old chain, FIXME, must be sent from streaming thread. */
3073 gst_ogg_demux_send_event (ogg, newseg);
3078 gst_segment_set_seek (&ogg->segment, rate, format, flags,
3079 cur_type, cur, stop_type, stop, &update);
3082 GST_DEBUG_OBJECT (ogg, "segment positions set to %" GST_TIME_FORMAT "-%"
3083 GST_TIME_FORMAT, GST_TIME_ARGS (ogg->segment.start),
3084 GST_TIME_ARGS (ogg->segment.stop));
3086 /* we need to stop flushing on the srcpad as we're going to use it
3087 * next. We can do this as we have the STREAM lock now. */
3089 tevent = gst_event_new_flush_stop ();
3090 gst_event_set_seqnum (tevent, seqnum);
3091 gst_pad_push_event (ogg->sinkpad, tevent);
3097 /* reset all ogg streams now, need to do this from within the lock to
3098 * make sure the streaming thread is not messing with the stream */
3099 for (i = 0; i < ogg->chains->len; i++) {
3100 GstOggChain *chain = g_array_index (ogg->chains, GstOggChain *, i);
3102 gst_ogg_chain_reset (chain);
3106 /* for reverse we will already seek accurately */
3107 res = gst_ogg_demux_do_seek (ogg, &ogg->segment, accurate, keyframe, &chain);
3109 /* seek failed, make sure we continue the current chain */
3111 GST_DEBUG_OBJECT (ogg, "seek failed");
3112 chain = ogg->current_chain;
3114 GST_DEBUG_OBJECT (ogg, "seek success");
3120 /* now we have a new position, prepare for streaming again */
3125 gint64 last_stop, begin_time;
3127 /* we have to send the flush to the old chain, not the new one */
3129 tevent = gst_event_new_flush_stop ();
3130 gst_event_set_seqnum (tevent, seqnum);
3131 gst_ogg_demux_send_event (ogg, tevent);
3134 /* we need this to see how far inside the chain we need to start */
3135 if (chain->begin_time != GST_CLOCK_TIME_NONE)
3136 begin_time = chain->begin_time;
3140 /* segment.start gives the start over all chains, we calculate the amount
3141 * of time into this chain we need to start */
3142 start = ogg->segment.start - begin_time;
3143 if (chain->segment_start != GST_CLOCK_TIME_NONE)
3144 start += chain->segment_start;
3146 if ((stop = ogg->segment.stop) == -1)
3147 stop = ogg->segment.duration;
3149 /* segment.stop gives the stop time over all chains, calculate the amount of
3150 * time we need to stop in this chain */
3152 if (stop > begin_time)
3156 stop += chain->segment_start;
3157 /* we must stop when this chain ends and switch to the next chain to play
3158 * the remainder of the segment. */
3159 stop = MIN (stop, chain->segment_stop);
3162 last_stop = ogg->segment.last_stop;
3163 if (chain->segment_start != GST_CLOCK_TIME_NONE)
3164 last_stop += chain->segment_start;
3166 /* create the segment event we are going to send out */
3167 if (ogg->segment.rate >= 0.0)
3168 event = gst_event_new_new_segment (FALSE, ogg->segment.rate,
3169 ogg->segment.format, last_stop, stop, ogg->segment.time);
3171 event = gst_event_new_new_segment (FALSE, ogg->segment.rate,
3172 ogg->segment.format, start, last_stop, ogg->segment.time);
3174 gst_event_set_seqnum (event, seqnum);
3176 if (chain != ogg->current_chain) {
3177 /* switch to different chain, send segment on new chain */
3178 gst_ogg_demux_activate_chain (ogg, chain, event);
3180 /* mark discont and send segment on current chain */
3181 gst_ogg_chain_mark_discont (chain);
3182 /* This event should be sent from the streaming thread (sink pad task) */
3183 if (ogg->newsegment)
3184 gst_event_unref (ogg->newsegment);
3185 ogg->newsegment = event;
3188 /* notify start of new segment */
3189 if (ogg->segment.flags & GST_SEEK_FLAG_SEGMENT) {
3190 GstMessage *message;
3192 message = gst_message_new_segment_start (GST_OBJECT (ogg),
3193 GST_FORMAT_TIME, ogg->segment.last_stop);
3194 gst_message_set_seqnum (message, seqnum);
3196 gst_element_post_message (GST_ELEMENT (ogg), message);
3199 ogg->segment_running = TRUE;
3200 ogg->seqnum = seqnum;
3201 /* restart our task since it might have been stopped when we did the
3203 gst_pad_start_task (ogg->sinkpad, (GstTaskFunction) gst_ogg_demux_loop,
3207 /* streaming can continue now */
3208 GST_PAD_STREAM_UNLOCK (ogg->sinkpad);
3215 GST_DEBUG_OBJECT (ogg, "seek failed");
3220 GST_DEBUG_OBJECT (ogg, "no chain to seek in");
3221 GST_PAD_STREAM_UNLOCK (ogg->sinkpad);
3227 gst_ogg_demux_get_duration_push (GstOggDemux * ogg, int flags)
3229 /* In push mode, we get to the end of the stream to get the duration */
3234 /* A full Ogg page can be almost 64 KB. There's no guarantee that there'll be a
3235 granpos there, but it's fairly likely */
3237 ogg->push_byte_length - DURATION_CHUNK_OFFSET - EOS_AVOIDANCE_THRESHOLD;
3241 GST_DEBUG_OBJECT (ogg,
3242 "Getting duration, seeking near the end, to %" G_GINT64_FORMAT, position);
3243 ogg->push_state = PUSH_DURATION;
3244 /* do not read the last byte */
3245 sevent = gst_event_new_seek (1.0, GST_FORMAT_BYTES, flags, GST_SEEK_TYPE_SET,
3246 position, GST_SEEK_TYPE_SET, ogg->push_byte_length - 1);
3247 res = gst_pad_push_event (ogg->sinkpad, sevent);
3249 GST_DEBUG_OBJECT (ogg, "Seek succesful");
3252 GST_INFO_OBJECT (ogg, "Seek failed, duration will stay unknown");
3253 ogg->push_state = PUSH_PLAYING;
3254 ogg->push_disable_seeking = TRUE;
3260 gst_ogg_demux_check_duration_push (GstOggDemux * ogg, GstSeekFlags flags,
3263 if (ogg->push_byte_length < 0) {
3266 GST_DEBUG_OBJECT (ogg, "Trying to find byte/time length");
3267 if ((peer = gst_pad_get_peer (ogg->sinkpad)) != NULL) {
3268 GstFormat format = GST_FORMAT_BYTES;
3272 res = gst_pad_query_duration (peer, &format, &length);
3273 if (res && length > 0) {
3274 ogg->push_byte_length = length;
3275 GST_DEBUG_OBJECT (ogg,
3276 "File byte length %" G_GINT64_FORMAT, ogg->push_byte_length);
3278 format = GST_FORMAT_TIME;
3279 res = gst_pad_query_duration (peer, &format, &length);
3280 gst_object_unref (peer);
3281 if (res && length >= 0) {
3282 ogg->push_time_length = length;
3283 GST_DEBUG_OBJECT (ogg, "File time length %" GST_TIME_FORMAT,
3284 GST_TIME_ARGS (ogg->push_time_length));
3285 } else if (!ogg->push_disable_seeking) {
3288 res = gst_ogg_demux_get_duration_push (ogg, flags);
3290 GST_DEBUG_OBJECT (ogg,
3291 "File time length unknown, trying to determine");
3292 ogg->push_mode_seek_delayed_event = NULL;
3294 GST_DEBUG_OBJECT (ogg,
3295 "Let me intercept this innocent looking seek request");
3296 ogg->push_mode_seek_delayed_event = gst_event_copy (event);
3307 gst_ogg_demux_perform_seek_push (GstOggDemux * ogg, GstEvent * event)
3310 gboolean res = TRUE;
3314 GstSeekType start_type, stop_type;
3318 gint64 best, best_time;
3321 GST_DEBUG_OBJECT (ogg, "Push mode seek request received");
3323 gst_event_parse_seek (event, &rate, &format, &flags,
3324 &start_type, &start, &stop_type, &stop);
3326 if (format != GST_FORMAT_TIME) {
3327 GST_DEBUG_OBJECT (ogg, "can only seek on TIME");
3331 if (start_type != GST_SEEK_TYPE_SET) {
3332 GST_DEBUG_OBJECT (ogg, "can only seek to a SET target");
3336 if (!(flags & GST_SEEK_FLAG_FLUSH)) {
3337 GST_DEBUG_OBJECT (ogg, "can only do flushing seeks");
3341 GST_DEBUG_OBJECT (ogg, "Push mode seek request: %" GST_TIME_FORMAT,
3342 GST_TIME_ARGS (start));
3344 chain = ogg->current_chain;
3346 GST_WARNING_OBJECT (ogg, "No chain to seek on");
3350 /* start accessing push_* members */
3351 GST_PUSH_LOCK (ogg);
3353 /* not if we disabled seeking (chained streams) */
3354 if (ogg->push_disable_seeking) {
3355 GST_DEBUG_OBJECT (ogg, "Seeking disabled");
3359 /* not when we're trying to work out duration */
3360 if (ogg->push_state == PUSH_DURATION) {
3361 GST_DEBUG_OBJECT (ogg, "Busy working out duration, try again later");
3365 /* actually, not if we're doing any seeking already */
3366 if (ogg->push_state != PUSH_PLAYING) {
3367 GST_DEBUG_OBJECT (ogg, "Already doing some seeking, try again later");
3371 /* on the first seek, get length if we can */
3372 if (!gst_ogg_demux_check_duration_push (ogg, flags, event)) {
3373 GST_PUSH_UNLOCK (ogg);
3377 if (do_index_search (ogg, chain, 0, -1, 0, -1, start, &best, &best_time)) {
3378 /* the index gave some result */
3379 GST_DEBUG_OBJECT (ogg,
3380 "found offset %" G_GINT64_FORMAT " with time %" G_GUINT64_FORMAT,
3383 if (ogg->push_time_length > 0) {
3384 /* if we know the time length, we know the full segment bitrate */
3385 GST_DEBUG_OBJECT (ogg, "Using real file bitrate");
3387 gst_util_uint64_scale (ogg->push_byte_length, 8 * GST_SECOND,
3388 ogg->push_time_length);
3389 } else if (ogg->push_time_offset > 0) {
3390 /* get a first approximation using known bitrate to the current position */
3391 GST_DEBUG_OBJECT (ogg, "Using file bitrate so far");
3393 gst_util_uint64_scale (ogg->push_byte_offset, 8 * GST_SECOND,
3394 ogg->push_time_offset);
3395 } else if (ogg->bitrate > 0) {
3396 /* nominal bitrate is better than nothing, even if it lies often */
3397 GST_DEBUG_OBJECT (ogg, "Using nominal bitrate");
3398 bitrate = ogg->bitrate;
3401 GST_DEBUG_OBJECT (ogg,
3402 "At stream start, and no nominal bitrate, using some random magic "
3404 /* the bisection, once started, should give us a better approximation */
3407 best = gst_util_uint64_scale (start, bitrate, 8 * GST_SECOND);
3410 /* offset by typical page length, and ensure our best guess is within
3411 reasonable bounds */
3415 if (ogg->push_byte_length > 0 && best >= ogg->push_byte_length)
3416 best = ogg->push_byte_length - 1;
3418 /* set up bisection search */
3419 ogg->push_offset0 = 0;
3420 ogg->push_offset1 = ogg->push_byte_length - 1;
3421 ogg->push_time0 = ogg->push_start_time;
3422 ogg->push_time1 = ogg->push_time_length;
3423 ogg->push_seek_time_target = start;
3424 ogg->push_prev_seek_time = GST_CLOCK_TIME_NONE;
3425 ogg->push_seek_time_original_target = start;
3426 ogg->push_state = PUSH_BISECT1;
3427 ogg->seek_secant = FALSE;
3428 ogg->seek_undershot = FALSE;
3430 /* reset pad push mode seeking state */
3431 for (i = 0; i < chain->streams->len; i++) {
3432 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
3433 pad->push_kf_time = GST_CLOCK_TIME_NONE;
3434 pad->push_sync_time = GST_CLOCK_TIME_NONE;
3437 GST_DEBUG_OBJECT (ogg,
3438 "Setting up bisection search for %" G_GINT64_FORMAT " - %" G_GINT64_FORMAT
3439 " (time %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT ")", ogg->push_offset0,
3440 ogg->push_offset1, GST_TIME_ARGS (ogg->push_time0),
3441 GST_TIME_ARGS (ogg->push_time1));
3442 GST_DEBUG_OBJECT (ogg,
3443 "Target time is %" GST_TIME_FORMAT ", best first guess is %"
3444 G_GINT64_FORMAT, GST_TIME_ARGS (ogg->push_seek_time_target), best);
3446 ogg->push_seek_rate = rate;
3447 ogg->push_seek_flags = flags;
3448 ogg->push_mode_seek_delayed_event = NULL;
3449 ogg->push_bisection_steps[0] = 1;
3450 ogg->push_bisection_steps[1] = 0;
3451 sevent = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags,
3452 start_type, best, GST_SEEK_TYPE_NONE, -1);
3454 GST_PUSH_UNLOCK (ogg);
3455 res = gst_pad_push_event (ogg->sinkpad, sevent);
3462 GST_DEBUG_OBJECT (ogg, "seek failed");
3467 GST_PUSH_UNLOCK (ogg);
3472 gst_ogg_demux_perform_seek (GstOggDemux * ogg, GstEvent * event)
3476 if (ogg->pullmode) {
3477 res = gst_ogg_demux_perform_seek_pull (ogg, event);
3479 res = gst_ogg_demux_perform_seek_push (ogg, event);
3485 /* finds each bitstream link one at a time using a bisection search
3486 * (has to begin by knowing the offset of the lb's initial page).
3487 * Recurses for each link so it can alloc the link storage after
3488 * finding them all, then unroll and fill the cache at the same time
3490 static GstFlowReturn
3491 gst_ogg_demux_bisect_forward_serialno (GstOggDemux * ogg,
3492 gint64 begin, gint64 searched, gint64 end, GstOggChain * chain, glong m)
3494 gint64 endsearched = end;
3499 GstOggChain *nextchain;
3501 GST_LOG_OBJECT (ogg,
3502 "bisect begin: %" G_GINT64_FORMAT ", searched: %" G_GINT64_FORMAT
3503 ", end %" G_GINT64_FORMAT ", chain: %p", begin, searched, end, chain);
3505 /* the below guards against garbage seperating the last and
3506 * first pages of two links. */
3507 while (searched < endsearched) {
3510 if (endsearched - searched < CHUNKSIZE) {
3513 bisect = (searched + endsearched) / 2;
3516 gst_ogg_demux_seek (ogg, bisect);
3517 ret = gst_ogg_demux_get_next_page (ogg, &og, -1, &offset);
3519 if (ret == GST_FLOW_UNEXPECTED) {
3520 endsearched = bisect;
3521 } else if (ret == GST_FLOW_OK) {
3522 guint32 serial = ogg_page_serialno (&og);
3524 if (!gst_ogg_chain_has_stream (chain, serial)) {
3525 endsearched = bisect;
3528 searched = offset + og.header_len + og.body_len;
3534 GST_LOG_OBJECT (ogg, "current chain ends at %" G_GINT64_FORMAT, searched);
3536 chain->end_offset = searched;
3537 ret = gst_ogg_demux_read_end_chain (ogg, chain);
3538 if (ret != GST_FLOW_OK)
3541 GST_LOG_OBJECT (ogg, "found begin at %" G_GINT64_FORMAT, next);
3543 gst_ogg_demux_seek (ogg, next);
3544 ret = gst_ogg_demux_read_chain (ogg, &nextchain);
3545 if (ret == GST_FLOW_UNEXPECTED) {
3548 GST_LOG_OBJECT (ogg, "no next chain");
3549 } else if (ret != GST_FLOW_OK)
3552 if (searched < end && nextchain != NULL) {
3553 ret = gst_ogg_demux_bisect_forward_serialno (ogg, next, ogg->offset,
3554 end, nextchain, m + 1);
3555 if (ret != GST_FLOW_OK)
3558 GST_LOG_OBJECT (ogg, "adding chain %p", chain);
3560 g_array_insert_val (ogg->chains, 0, chain);
3566 /* read a chain from the ogg file. This code will
3567 * read all BOS pages and will create and return a GstOggChain
3568 * structure with the results.
3570 * This function will also read N pages from each stream in the
3571 * chain and submit them to the decoders. When the decoder has
3572 * decoded the first buffer, we know the timestamp of the first
3573 * page in the chain.
3575 static GstFlowReturn
3576 gst_ogg_demux_read_chain (GstOggDemux * ogg, GstOggChain ** res_chain)
3579 GstOggChain *chain = NULL;
3580 gint64 offset = ogg->offset;
3585 GST_LOG_OBJECT (ogg, "reading chain at %" G_GINT64_FORMAT, offset);
3587 /* first read the BOS pages, do typefind on them, create
3588 * the decoders, send data to the decoders. */
3593 ret = gst_ogg_demux_get_next_page (ogg, &og, -1, NULL);
3594 if (ret != GST_FLOW_OK) {
3595 if (ret == GST_FLOW_UNEXPECTED) {
3596 GST_DEBUG_OBJECT (ogg, "Reached EOS, done reading end chain");
3598 GST_WARNING_OBJECT (ogg, "problem reading BOS page: ret=%d", ret);
3602 if (!ogg_page_bos (&og)) {
3603 GST_INFO_OBJECT (ogg, "page is not BOS page, all streams identified");
3604 /* if we did not find a chain yet, assume this is a bogus stream and
3607 GST_WARNING_OBJECT (ogg, "No chain found, no Ogg data in stream ?");
3608 ret = GST_FLOW_UNEXPECTED;
3613 if (chain == NULL) {
3614 chain = gst_ogg_chain_new (ogg);
3615 chain->offset = offset;
3618 serial = ogg_page_serialno (&og);
3619 if (gst_ogg_chain_get_stream (chain, serial) != NULL) {
3620 GST_WARNING_OBJECT (ogg,
3621 "found serial %08x BOS page twice, ignoring", serial);
3625 pad = gst_ogg_chain_new_stream (chain, serial);
3626 gst_ogg_pad_submit_page (pad, &og);
3629 if (ret != GST_FLOW_OK || chain == NULL) {
3630 if (ret == GST_FLOW_OK) {
3631 GST_WARNING_OBJECT (ogg, "no chain was found");
3632 ret = GST_FLOW_ERROR;
3633 } else if (ret != GST_FLOW_UNEXPECTED) {
3634 GST_WARNING_OBJECT (ogg, "failed to read chain");
3636 GST_DEBUG_OBJECT (ogg, "done reading chains");
3639 gst_ogg_chain_free (chain);
3646 chain->have_bos = TRUE;
3647 GST_LOG_OBJECT (ogg, "read bos pages, init decoder now");
3649 /* now read pages until we receive a buffer from each of the
3650 * stream decoders, this will tell us the timestamp of the
3651 * first packet in the chain then */
3653 /* save the offset to the first non bos page in the chain: if searching for
3654 * pad->first_time we read past the end of the chain, we'll seek back to this
3657 offset = ogg->offset;
3662 gboolean known_serial = FALSE;
3665 serial = ogg_page_serialno (&og);
3667 for (i = 0; i < chain->streams->len; i++) {
3668 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
3670 GST_LOG_OBJECT (ogg,
3671 "serial %08x time %" GST_TIME_FORMAT,
3672 pad->map.serialno, GST_TIME_ARGS (pad->start_time));
3674 if (pad->map.serialno == serial) {
3675 known_serial = TRUE;
3677 /* submit the page now, this will fill in the start_time when the
3678 * internal decoder finds it */
3679 gst_ogg_pad_submit_page (pad, &og);
3681 if (!pad->map.is_skeleton && pad->start_time == -1
3682 && ogg_page_eos (&og)) {
3683 /* got EOS on a pad before we could find its start_time.
3684 * We have no chance of finding a start_time for every pad so
3685 * stop searching for the other start_time(s).
3691 /* the timestamp will be filled in when we submit the pages */
3692 if (!pad->map.is_sparse)
3693 done &= (pad->start_time != GST_CLOCK_TIME_NONE);
3695 GST_LOG_OBJECT (ogg, "done %08x now %d", pad->map.serialno, done);
3698 /* we read a page not belonging to the current chain: seek back to the
3699 * beginning of the chain
3701 if (!known_serial) {
3702 GST_LOG_OBJECT (ogg, "unknown serial %08x", serial);
3703 gst_ogg_demux_seek (ogg, offset);
3708 ret = gst_ogg_demux_get_next_page (ogg, &og, -1, NULL);
3709 if (ret != GST_FLOW_OK)
3713 GST_LOG_OBJECT (ogg, "done reading chain");
3714 /* now we can fill in the missing info using queries */
3715 for (i = 0; i < chain->streams->len; i++) {
3716 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
3718 if (pad->map.is_skeleton)
3721 pad->mode = GST_OGG_PAD_MODE_STREAMING;
3730 /* read the last pages from the ogg stream to get the final
3733 static GstFlowReturn
3734 gst_ogg_demux_read_end_chain (GstOggDemux * ogg, GstOggChain * chain)
3736 gint64 begin = chain->end_offset;
3738 gint64 last_granule = -1;
3739 GstOggPad *last_pad = NULL;
3741 gboolean done = FALSE;
3750 gst_ogg_demux_seek (ogg, begin);
3752 /* now continue reading until we run out of data, if we find a page
3753 * start, we save it. It might not be the final page as there could be
3754 * another page after this one. */
3755 while (ogg->offset < end) {
3756 ret = gst_ogg_demux_get_next_page (ogg, &og, end - ogg->offset, NULL);
3758 if (ret == GST_FLOW_LIMIT)
3760 if (ret != GST_FLOW_OK)
3763 for (i = 0; i < chain->streams->len; i++) {
3764 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
3766 if (pad->map.is_skeleton)
3769 if (pad->map.serialno == ogg_page_serialno (&og)) {
3770 gint64 granulepos = ogg_page_granulepos (&og);
3772 if (granulepos != -1) {
3773 last_granule = granulepos;
3784 chain->segment_stop =
3785 gst_ogg_stream_get_end_time_for_granulepos (&last_pad->map,
3788 chain->segment_stop = GST_CLOCK_TIME_NONE;
3791 GST_INFO ("segment stop %" G_GUINT64_FORMAT, chain->segment_stop);
3796 /* find a pad with a given serial number
3799 gst_ogg_demux_find_pad (GstOggDemux * ogg, guint32 serialno)
3804 /* first look in building chain if any */
3805 if (ogg->building_chain) {
3806 pad = gst_ogg_chain_get_stream (ogg->building_chain, serialno);
3811 /* then look in current chain if any */
3812 if (ogg->current_chain) {
3813 pad = gst_ogg_chain_get_stream (ogg->current_chain, serialno);
3818 for (i = 0; i < ogg->chains->len; i++) {
3819 GstOggChain *chain = g_array_index (ogg->chains, GstOggChain *, i);
3821 pad = gst_ogg_chain_get_stream (chain, serialno);
3828 /* find a chain with a given serial number
3830 static GstOggChain *
3831 gst_ogg_demux_find_chain (GstOggDemux * ogg, guint32 serialno)
3835 pad = gst_ogg_demux_find_pad (ogg, serialno);
3842 /* returns TRUE if all streams have valid start time */
3844 gst_ogg_demux_collect_chain_info (GstOggDemux * ogg, GstOggChain * chain)
3846 gboolean res = TRUE;
3848 chain->total_time = GST_CLOCK_TIME_NONE;
3849 GST_DEBUG_OBJECT (ogg, "trying to collect chain info");
3851 /* see if we have a start time on all streams */
3852 chain->segment_start = gst_ogg_demux_collect_start_time (ogg, chain);
3854 if (chain->segment_start == G_MAXUINT64) {
3855 /* not yet, stream some more data */
3857 } else if (chain->segment_stop != GST_CLOCK_TIME_NONE) {
3858 /* we can calculate a total time */
3859 chain->total_time = chain->segment_stop - chain->segment_start;
3862 GST_DEBUG ("total time %" G_GUINT64_FORMAT, chain->total_time);
3864 GST_DEBUG_OBJECT (ogg, "return %d", res);
3870 gst_ogg_demux_collect_info (GstOggDemux * ogg)
3874 /* collect all info */
3875 ogg->total_time = 0;
3877 for (i = 0; i < ogg->chains->len; i++) {
3878 GstOggChain *chain = g_array_index (ogg->chains, GstOggChain *, i);
3880 chain->begin_time = ogg->total_time;
3882 gst_ogg_demux_collect_chain_info (ogg, chain);
3884 ogg->total_time += chain->total_time;
3886 gst_segment_set_duration (&ogg->segment, GST_FORMAT_TIME, ogg->total_time);
3889 /* find all the chains in the ogg file, this reads the first and
3890 * last page of the ogg stream, if they match then the ogg file has
3891 * just one chain, else we do a binary search for all chains.
3893 static GstFlowReturn
3894 gst_ogg_demux_find_chains (GstOggDemux * ogg)
3904 /* get peer to figure out length */
3905 if ((peer = gst_pad_get_peer (ogg->sinkpad)) == NULL)
3908 /* find length to read last page, we store this for later use. */
3909 format = GST_FORMAT_BYTES;
3910 res = gst_pad_query_duration (peer, &format, &ogg->length);
3911 gst_object_unref (peer);
3912 if (!res || ogg->length <= 0)
3915 GST_DEBUG_OBJECT (ogg, "file length %" G_GINT64_FORMAT, ogg->length);
3917 /* read chain from offset 0, this is the first chain of the
3919 gst_ogg_demux_seek (ogg, 0);
3920 ret = gst_ogg_demux_read_chain (ogg, &chain);
3921 if (ret != GST_FLOW_OK)
3922 goto no_first_chain;
3924 /* read page from end offset, we use this page to check if its serial
3925 * number is contained in the first chain. If this is the case then
3926 * this ogg is not a chained ogg and we can skip the scanning. */
3927 gst_ogg_demux_seek (ogg, ogg->length);
3928 ret = gst_ogg_demux_get_prev_page (ogg, &og, NULL);
3929 if (ret != GST_FLOW_OK)
3932 serialno = ogg_page_serialno (&og);
3934 if (!gst_ogg_chain_has_stream (chain, serialno)) {
3935 /* the last page is not in the first stream, this means we should
3936 * find all the chains in this chained ogg. */
3938 gst_ogg_demux_bisect_forward_serialno (ogg, 0, 0, ogg->length, chain,
3941 /* we still call this function here but with an empty range so that
3942 * we can reuse the setup code in this routine. */
3944 gst_ogg_demux_bisect_forward_serialno (ogg, 0, ogg->length,
3945 ogg->length, chain, 0);
3947 if (ret != GST_FLOW_OK)
3950 /* all fine, collect and print */
3951 gst_ogg_demux_collect_info (ogg);
3953 /* dump our chains and streams */
3954 gst_ogg_print (ogg);
3959 /*** error cases ***/
3962 GST_ELEMENT_ERROR (ogg, STREAM, DEMUX, (NULL), ("we don't have a peer"));
3963 return GST_FLOW_NOT_LINKED;
3967 GST_ELEMENT_ERROR (ogg, STREAM, DEMUX, (NULL), ("can't get file length"));
3968 return GST_FLOW_NOT_SUPPORTED;
3972 GST_ELEMENT_ERROR (ogg, STREAM, DEMUX, (NULL), ("can't get first chain"));
3973 return GST_FLOW_ERROR;
3977 GST_DEBUG_OBJECT (ogg, "can't get last page");
3979 gst_ogg_chain_free (chain);
3984 static GstFlowReturn
3985 gst_ogg_demux_handle_page (GstOggDemux * ogg, ogg_page * page)
3990 GstFlowReturn result = GST_FLOW_OK;
3992 serialno = ogg_page_serialno (page);
3993 granule = ogg_page_granulepos (page);
3995 GST_LOG_OBJECT (ogg,
3996 "processing ogg page (serial %08x, "
3997 "pageno %ld, granulepos %" G_GINT64_FORMAT ", bos %d)", serialno,
3998 ogg_page_pageno (page), granule, ogg_page_bos (page));
4000 if (ogg_page_bos (page)) {
4004 /* see if we know about the chain already */
4005 chain = gst_ogg_demux_find_chain (ogg, serialno);
4010 if (chain->segment_start != GST_CLOCK_TIME_NONE)
4011 start = chain->segment_start;
4013 /* create the newsegment event we are going to send out */
4014 event = gst_event_new_new_segment (FALSE, ogg->segment.rate,
4015 GST_FORMAT_TIME, start, chain->segment_stop, chain->begin_time);
4016 gst_event_set_seqnum (event, ogg->seqnum);
4018 GST_DEBUG_OBJECT (ogg,
4019 "segment: start %" GST_TIME_FORMAT ", stop %" GST_TIME_FORMAT
4020 ", time %" GST_TIME_FORMAT, GST_TIME_ARGS (start),
4021 GST_TIME_ARGS (chain->segment_stop),
4022 GST_TIME_ARGS (chain->begin_time));
4024 /* activate it as it means we have a non-header, this will also deactivate
4025 * the currently running chain. */
4026 gst_ogg_demux_activate_chain (ogg, chain, event);
4027 pad = gst_ogg_demux_find_pad (ogg, serialno);
4029 GstClockTime chain_time;
4030 gint64 current_time;
4032 /* this can only happen in push mode */
4036 current_time = ogg->segment.last_stop;
4038 /* time of new chain is current time */
4039 chain_time = current_time;
4041 if (ogg->building_chain == NULL) {
4042 GstOggChain *newchain;
4044 newchain = gst_ogg_chain_new (ogg);
4045 newchain->offset = 0;
4046 /* set new chain begin time aligned with end time of old chain */
4047 newchain->begin_time = chain_time;
4048 GST_DEBUG_OBJECT (ogg, "new chain, begin time %" GST_TIME_FORMAT,
4049 GST_TIME_ARGS (chain_time));
4051 /* and this is the one we are building now */
4052 ogg->building_chain = newchain;
4054 pad = gst_ogg_chain_new_stream (ogg->building_chain, serialno);
4057 pad = gst_ogg_demux_find_pad (ogg, serialno);
4060 result = gst_ogg_pad_submit_page (pad, page);
4062 GST_PUSH_LOCK (ogg);
4063 if (!ogg->pullmode && !ogg->push_disable_seeking) {
4064 /* no pad while probing for duration, we must have a chained stream,
4065 and we don't support them, so back off */
4066 GST_INFO_OBJECT (ogg, "We seem to have a chained stream, we won't seek");
4067 if (ogg->push_state == PUSH_DURATION) {
4070 res = gst_ogg_demux_seek_back_after_push_duration_check_unlock (ogg);
4071 if (res != GST_FLOW_OK)
4075 /* only once we seeked back */
4076 GST_PUSH_LOCK (ogg);
4077 ogg->push_disable_seeking = TRUE;
4079 GST_PUSH_UNLOCK (ogg);
4080 /* no pad. This means an ogg page without bos has been seen for this
4081 * serialno. we just ignore it but post a warning... */
4082 GST_ELEMENT_WARNING (ogg, STREAM, DECODE,
4083 (NULL), ("unknown ogg pad for serial %08x detected", serialno));
4086 GST_PUSH_UNLOCK (ogg);
4093 GST_ELEMENT_ERROR (ogg, STREAM, DECODE,
4094 (NULL), ("unknown ogg chain for serial %08x detected", serialno));
4095 return GST_FLOW_ERROR;
4099 /* streaming mode, receive a buffer, parse it, create pads for
4100 * the serialno, submit pages and packets to the oggpads
4102 static GstFlowReturn
4103 gst_ogg_demux_chain (GstPad * pad, GstBuffer * buffer)
4107 GstFlowReturn result = GST_FLOW_OK;
4109 ogg = GST_OGG_DEMUX (GST_OBJECT_PARENT (pad));
4111 GST_DEBUG_OBJECT (ogg, "enter");
4112 result = gst_ogg_demux_submit_buffer (ogg, buffer);
4114 GST_DEBUG_OBJECT (ogg, "gst_ogg_demux_submit_buffer returned %d", result);
4117 while (result == GST_FLOW_OK) {
4120 ret = ogg_sync_pageout (&ogg->sync, &page);
4122 /* need more data */
4125 /* discontinuity in the pages */
4126 GST_DEBUG_OBJECT (ogg, "discont in page found, continuing");
4128 result = gst_ogg_demux_handle_page (ogg, &page);
4130 GST_DEBUG_OBJECT (ogg, "gst_ogg_demux_handle_page returned %d", result);
4134 if (ret == 0 || result == GST_FLOW_OK) {
4135 gst_ogg_demux_sync_streams (ogg);
4137 GST_DEBUG_OBJECT (ogg, "leave with %d", result);
4142 gst_ogg_demux_send_event (GstOggDemux * ogg, GstEvent * event)
4144 GstOggChain *chain = ogg->current_chain;
4145 gboolean res = TRUE;
4148 chain = ogg->building_chain;
4153 for (i = 0; i < chain->streams->len; i++) {
4154 GstOggPad *pad = g_array_index (chain->streams, GstOggPad *, i);
4156 gst_event_ref (event);
4157 GST_DEBUG_OBJECT (pad, "Pushing event %" GST_PTR_FORMAT, event);
4158 res &= gst_pad_push_event (GST_PAD (pad), event);
4161 GST_WARNING_OBJECT (ogg, "No chain to forward event to");
4163 gst_event_unref (event);
4168 static GstFlowReturn
4169 gst_ogg_demux_combine_flows (GstOggDemux * ogg, GstOggPad * pad,
4174 /* store the value */
4175 pad->last_ret = ret;
4177 /* any other error that is not-linked can be returned right
4179 if (ret != GST_FLOW_NOT_LINKED)
4182 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
4183 chain = ogg->current_chain;
4187 for (i = 0; i < chain->streams->len; i++) {
4188 GstOggPad *opad = g_array_index (chain->streams, GstOggPad *, i);
4190 ret = opad->last_ret;
4191 /* some other return value (must be SUCCESS but we can return
4192 * other values as well) */
4193 if (ret != GST_FLOW_NOT_LINKED)
4196 /* if we get here, all other pads were unlinked and we return
4197 * NOT_LINKED then */
4203 /* returns TRUE if all streams in current chain reached EOS, FALSE otherwise */
4205 gst_ogg_demux_check_eos (GstOggDemux * ogg)
4208 gboolean eos = TRUE;
4210 chain = ogg->current_chain;
4211 if (G_LIKELY (chain)) {
4214 for (i = 0; i < chain->streams->len; i++) {
4215 GstOggPad *opad = g_array_index (chain->streams, GstOggPad *, i);
4217 eos = eos && opad->is_eos;
4226 static GstFlowReturn
4227 gst_ogg_demux_loop_forward (GstOggDemux * ogg)
4232 if (ogg->offset == ogg->length) {
4233 GST_LOG_OBJECT (ogg, "no more data to pull %" G_GINT64_FORMAT
4234 " == %" G_GINT64_FORMAT, ogg->offset, ogg->length);
4235 ret = GST_FLOW_UNEXPECTED;
4239 GST_LOG_OBJECT (ogg, "pull data %" G_GINT64_FORMAT, ogg->offset);
4240 ret = gst_pad_pull_range (ogg->sinkpad, ogg->offset, CHUNKSIZE, &buffer);
4241 if (ret != GST_FLOW_OK) {
4242 GST_LOG_OBJECT (ogg, "Failed pull_range");
4246 ogg->offset += GST_BUFFER_SIZE (buffer);
4248 if (G_UNLIKELY (ogg->newsegment)) {
4249 gst_ogg_demux_send_event (ogg, ogg->newsegment);
4250 ogg->newsegment = NULL;
4253 ret = gst_ogg_demux_chain (ogg->sinkpad, buffer);
4254 if (ret != GST_FLOW_OK) {
4255 GST_LOG_OBJECT (ogg, "Failed demux_chain");
4259 /* check for the end of the segment */
4260 if (gst_ogg_demux_check_eos (ogg)) {
4261 GST_LOG_OBJECT (ogg, "got EOS");
4262 ret = GST_FLOW_UNEXPECTED;
4271 * We read the pages backwards and send the packets forwards. The first packet
4272 * in the page will be pushed with the DISCONT flag set.
4274 * Special care has to be taken for continued pages, which we can only decode
4275 * when we have the previous page(s).
4277 static GstFlowReturn
4278 gst_ogg_demux_loop_reverse (GstOggDemux * ogg)
4284 if (ogg->offset == 0) {
4285 GST_LOG_OBJECT (ogg, "no more data to pull %" G_GINT64_FORMAT
4286 " == 0", ogg->offset);
4287 ret = GST_FLOW_UNEXPECTED;
4291 GST_LOG_OBJECT (ogg, "read page from %" G_GINT64_FORMAT, ogg->offset);
4292 ret = gst_ogg_demux_get_prev_page (ogg, &page, &offset);
4293 if (ret != GST_FLOW_OK)
4296 ogg->offset = offset;
4298 if (G_UNLIKELY (ogg->newsegment)) {
4299 gst_ogg_demux_send_event (ogg, ogg->newsegment);
4300 ogg->newsegment = NULL;
4303 ret = gst_ogg_demux_handle_page (ogg, &page);
4304 if (ret != GST_FLOW_OK)
4307 /* check for the end of the segment */
4308 if (gst_ogg_demux_check_eos (ogg)) {
4309 GST_LOG_OBJECT (ogg, "got EOS");
4310 ret = GST_FLOW_UNEXPECTED;
4318 gst_ogg_demux_sync_streams (GstOggDemux * ogg)
4324 chain = ogg->current_chain;
4325 cur = ogg->segment.last_stop;
4326 if (chain == NULL || cur == -1)
4329 for (i = 0; i < chain->streams->len; i++) {
4330 GstOggPad *stream = g_array_index (chain->streams, GstOggPad *, i);
4332 /* Theoretically, we should be doing this for all streams, but we're only
4333 * doing it for known-to-be-sparse streams at the moment in order not to
4334 * break things for wrongly-muxed streams (like we used to produce once) */
4335 if (stream->map.is_sparse && stream->last_stop != GST_CLOCK_TIME_NONE) {
4337 /* Does this stream lag? Random threshold of 2 seconds */
4338 if (GST_CLOCK_DIFF (stream->last_stop, cur) > (2 * GST_SECOND)) {
4339 GST_DEBUG_OBJECT (stream, "synchronizing stream with others by "
4340 "advancing time from %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT,
4341 GST_TIME_ARGS (stream->last_stop), GST_TIME_ARGS (cur));
4342 stream->last_stop = cur;
4343 /* advance stream time (FIXME: is this right, esp. time_pos?) */
4344 gst_pad_push_event (GST_PAD_CAST (stream),
4345 gst_event_new_new_segment (TRUE, ogg->segment.rate,
4346 GST_FORMAT_TIME, stream->last_stop, -1, stream->last_stop));
4352 /* random access code
4354 * - first find all the chains and streams by scanning the file.
4355 * - then get and chain buffers, just like the streaming case.
4356 * - when seeking, we can use the chain info to perform the seek.
4359 gst_ogg_demux_loop (GstOggPad * pad)
4365 ogg = GST_OGG_DEMUX (GST_OBJECT_PARENT (pad));
4367 if (ogg->need_chains) {
4370 /* this is the only place where we write chains and thus need to lock. */
4371 GST_CHAIN_LOCK (ogg);
4372 ret = gst_ogg_demux_find_chains (ogg);
4373 GST_CHAIN_UNLOCK (ogg);
4374 if (ret != GST_FLOW_OK)
4375 goto chain_read_failed;
4377 ogg->need_chains = FALSE;
4379 GST_OBJECT_LOCK (ogg);
4380 ogg->running = TRUE;
4383 GST_OBJECT_UNLOCK (ogg);
4385 /* and seek to configured positions without FLUSH */
4386 res = gst_ogg_demux_perform_seek_pull (ogg, event);
4388 gst_event_unref (event);
4394 if (ogg->segment.rate >= 0.0)
4395 ret = gst_ogg_demux_loop_forward (ogg);
4397 ret = gst_ogg_demux_loop_reverse (ogg);
4399 if (ret != GST_FLOW_OK)
4402 gst_ogg_demux_sync_streams (ogg);
4408 /* error was posted */
4413 GST_ELEMENT_ERROR (ogg, STREAM, DEMUX, (NULL),
4414 ("failed to start demuxing ogg"));
4415 ret = GST_FLOW_ERROR;
4420 const gchar *reason = gst_flow_get_name (ret);
4421 GstEvent *event = NULL;
4423 GST_LOG_OBJECT (ogg, "pausing task, reason %s", reason);
4424 ogg->segment_running = FALSE;
4425 gst_pad_pause_task (ogg->sinkpad);
4427 if (ret == GST_FLOW_UNEXPECTED) {
4428 /* perform EOS logic */
4429 if (ogg->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4431 GstMessage *message;
4433 /* for segment playback we need to post when (in stream time)
4434 * we stopped, this is either stop (when set) or the duration. */
4435 if ((stop = ogg->segment.stop) == -1)
4436 stop = ogg->segment.duration;
4438 GST_LOG_OBJECT (ogg, "Sending segment done, at end of segment");
4440 gst_message_new_segment_done (GST_OBJECT (ogg), GST_FORMAT_TIME,
4442 gst_message_set_seqnum (message, ogg->seqnum);
4444 gst_element_post_message (GST_ELEMENT (ogg), message);
4446 /* normal playback, send EOS to all linked pads */
4447 GST_LOG_OBJECT (ogg, "Sending EOS, at end of stream");
4448 event = gst_event_new_eos ();
4450 } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_UNEXPECTED) {
4451 GST_ELEMENT_ERROR (ogg, STREAM, FAILED,
4452 (_("Internal data stream error.")),
4453 ("stream stopped, reason %s", reason));
4454 event = gst_event_new_eos ();
4457 /* For wrong-state we still want to pause the task and stop
4458 * but no error message or other things are necessary.
4459 * wrong-state is no real error and will be caused by flushing,
4460 * e.g. because of a flushing seek.
4463 gst_event_set_seqnum (event, ogg->seqnum);
4464 gst_ogg_demux_send_event (ogg, event);
4471 gst_ogg_demux_clear_chains (GstOggDemux * ogg)
4475 gst_ogg_demux_deactivate_current_chain (ogg);
4477 GST_CHAIN_LOCK (ogg);
4478 for (i = 0; i < ogg->chains->len; i++) {
4479 GstOggChain *chain = g_array_index (ogg->chains, GstOggChain *, i);
4481 gst_ogg_chain_free (chain);
4483 ogg->chains = g_array_set_size (ogg->chains, 0);
4484 GST_CHAIN_UNLOCK (ogg);
4487 /* this function is called when the pad is activated and should start
4490 * We check if we can do random access to decide if we work push or
4494 gst_ogg_demux_sink_activate (GstPad * sinkpad)
4496 if (gst_pad_check_pull_range (sinkpad)) {
4497 GST_DEBUG_OBJECT (sinkpad, "activating pull");
4498 return gst_pad_activate_pull (sinkpad, TRUE);
4500 GST_DEBUG_OBJECT (sinkpad, "activating push");
4501 return gst_pad_activate_push (sinkpad, TRUE);
4505 /* this function gets called when we activate ourselves in push mode.
4506 * We cannot seek (ourselves) in the stream */
4508 gst_ogg_demux_sink_activate_push (GstPad * sinkpad, gboolean active)
4512 ogg = GST_OGG_DEMUX (GST_OBJECT_PARENT (sinkpad));
4514 ogg->pullmode = FALSE;
4515 ogg->resync = FALSE;
4520 /* this function gets called when we activate ourselves in pull mode.
4521 * We can perform random access to the resource and we start a task
4522 * to start reading */
4524 gst_ogg_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
4528 ogg = GST_OGG_DEMUX (GST_OBJECT_PARENT (sinkpad));
4531 ogg->need_chains = TRUE;
4532 ogg->pullmode = TRUE;
4534 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_ogg_demux_loop,
4537 return gst_pad_stop_task (sinkpad);
4541 static GstStateChangeReturn
4542 gst_ogg_demux_change_state (GstElement * element, GstStateChange transition)
4545 GstStateChangeReturn result = GST_STATE_CHANGE_FAILURE;
4547 ogg = GST_OGG_DEMUX (element);
4549 switch (transition) {
4550 case GST_STATE_CHANGE_NULL_TO_READY:
4552 ogg_sync_init (&ogg->sync);
4554 case GST_STATE_CHANGE_READY_TO_PAUSED:
4555 ogg_sync_reset (&ogg->sync);
4556 ogg->running = FALSE;
4558 ogg->segment_running = FALSE;
4559 ogg->total_time = -1;
4560 GST_PUSH_LOCK (ogg);
4561 ogg->push_byte_offset = 0;
4562 ogg->push_byte_length = -1;
4563 ogg->push_time_length = GST_CLOCK_TIME_NONE;
4564 ogg->push_time_offset = GST_CLOCK_TIME_NONE;
4565 ogg->push_disable_seeking = FALSE;
4566 ogg->push_state = PUSH_PLAYING;
4567 GST_PUSH_UNLOCK (ogg);
4568 gst_segment_init (&ogg->segment, GST_FORMAT_TIME);
4570 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
4576 result = parent_class->change_state (element, transition);
4578 switch (transition) {
4579 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
4581 case GST_STATE_CHANGE_PAUSED_TO_READY:
4582 gst_ogg_demux_clear_chains (ogg);
4583 GST_OBJECT_LOCK (ogg);
4584 ogg->running = FALSE;
4585 ogg->segment_running = FALSE;
4586 GST_OBJECT_UNLOCK (ogg);
4588 case GST_STATE_CHANGE_READY_TO_NULL:
4589 ogg_sync_clear (&ogg->sync);
4598 gst_ogg_demux_plugin_init (GstPlugin * plugin)
4600 GST_DEBUG_CATEGORY_INIT (gst_ogg_demux_debug, "oggdemux", 0, "ogg demuxer");
4601 GST_DEBUG_CATEGORY_INIT (gst_ogg_demux_setup_debug, "oggdemux_setup", 0,
4602 "ogg demuxer setup stage when parsing pipeline");
4605 GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
4607 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
4608 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
4611 return gst_element_register (plugin, "oggdemux", GST_RANK_PRIMARY,
4612 GST_TYPE_OGG_DEMUX);
4615 /* prints all info about the element */
4616 #undef GST_CAT_DEFAULT
4617 #define GST_CAT_DEFAULT gst_ogg_demux_setup_debug
4619 #ifdef GST_DISABLE_GST_DEBUG
4622 gst_ogg_print (GstOggDemux * ogg)
4627 #else /* !GST_DISABLE_GST_DEBUG */
4630 gst_ogg_print (GstOggDemux * ogg)
4634 GST_INFO_OBJECT (ogg, "%u chains", ogg->chains->len);
4635 GST_INFO_OBJECT (ogg, " total time: %" GST_TIME_FORMAT,
4636 GST_TIME_ARGS (ogg->total_time));
4638 for (i = 0; i < ogg->chains->len; i++) {
4639 GstOggChain *chain = g_array_index (ogg->chains, GstOggChain *, i);
4641 GST_INFO_OBJECT (ogg, " chain %d (%u streams):", i, chain->streams->len);
4642 GST_INFO_OBJECT (ogg,
4643 " offset: %" G_GINT64_FORMAT " - %" G_GINT64_FORMAT, chain->offset,
4645 GST_INFO_OBJECT (ogg, " begin time: %" GST_TIME_FORMAT,
4646 GST_TIME_ARGS (chain->begin_time));
4647 GST_INFO_OBJECT (ogg, " total time: %" GST_TIME_FORMAT,
4648 GST_TIME_ARGS (chain->total_time));
4649 GST_INFO_OBJECT (ogg, " segment start: %" GST_TIME_FORMAT,
4650 GST_TIME_ARGS (chain->segment_start));
4651 GST_INFO_OBJECT (ogg, " segment stop: %" GST_TIME_FORMAT,
4652 GST_TIME_ARGS (chain->segment_stop));
4654 for (j = 0; j < chain->streams->len; j++) {
4655 GstOggPad *stream = g_array_index (chain->streams, GstOggPad *, j);
4657 GST_INFO_OBJECT (ogg, " stream %08x: %s", stream->map.serialno,
4658 gst_ogg_stream_get_media_type (&stream->map));
4659 GST_INFO_OBJECT (ogg, " start time: %" GST_TIME_FORMAT,
4660 GST_TIME_ARGS (stream->start_time));
4664 #endif /* GST_DISABLE_GST_DEBUG */