2 * Copyright (C) 2010 Marc-Andre Lureau <marcandre.lureau@gmail.com>
3 * Copyright (C) 2010 Andoni Morales Alastruey <ylatuya@gmail.com>
4 * Copyright (C) 2011, Hewlett-Packard Development Company, L.P.
5 * Author: Youness Alaoui <youness.alaoui@collabora.co.uk>, Collabora Ltd.
6 * Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>, Collabora Ltd.
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Library General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Library General Public License for more details.
20 * You should have received a copy of the GNU Library General Public
21 * License along with this library; if not, write to the
22 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
23 * Boston, MA 02110-1301, USA.
26 * SECTION:element-hlsdemux
28 * HTTP Live Streaming demuxer element.
31 * <title>Example launch line</title>
33 * gst-launch souphttpsrc location=http://devimages.apple.com/iphone/samples/bipbop/gear4/prog_index.m3u8 ! hlsdemux ! decodebin2 ! videoconvert ! videoscale ! autovideosink
37 * Last reviewed on 2010-10-07
46 #include <nettle/aes.h>
47 #include <nettle/cbc.h>
51 #include "gsthlsdemux.h"
53 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src_%u",
58 static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
61 GST_STATIC_CAPS ("application/x-hls"));
63 GST_DEBUG_CATEGORY_STATIC (gst_hls_demux_debug);
64 #define GST_CAT_DEFAULT gst_hls_demux_debug
72 PROP_CONNECTION_SPEED,
76 static const float update_interval_factor[] = { 1, 0.5, 1.5, 3 };
78 #define DEFAULT_FRAGMENTS_CACHE 3
79 #define DEFAULT_FAILED_COUNT 3
80 #define DEFAULT_BITRATE_LIMIT 0.8
81 #define DEFAULT_CONNECTION_SPEED 0
84 static void gst_hls_demux_set_property (GObject * object, guint prop_id,
85 const GValue * value, GParamSpec * pspec);
86 static void gst_hls_demux_get_property (GObject * object, guint prop_id,
87 GValue * value, GParamSpec * pspec);
88 static void gst_hls_demux_dispose (GObject * obj);
91 static GstStateChangeReturn
92 gst_hls_demux_change_state (GstElement * element, GstStateChange transition);
95 static GstFlowReturn gst_hls_demux_chain (GstPad * pad, GstObject * parent,
97 static gboolean gst_hls_demux_sink_event (GstPad * pad, GstObject * parent,
99 static gboolean gst_hls_demux_src_event (GstPad * pad, GstObject * parent,
101 static gboolean gst_hls_demux_src_query (GstPad * pad, GstObject * parent,
103 static void gst_hls_demux_stream_loop (GstHLSDemux * demux);
104 static void gst_hls_demux_updates_loop (GstHLSDemux * demux);
105 static void gst_hls_demux_stop (GstHLSDemux * demux);
106 static void gst_hls_demux_pause_tasks (GstHLSDemux * demux, gboolean caching);
107 static gboolean gst_hls_demux_cache_fragments (GstHLSDemux * demux);
108 static gboolean gst_hls_demux_schedule (GstHLSDemux * demux);
109 static gboolean gst_hls_demux_switch_playlist (GstHLSDemux * demux);
110 static gboolean gst_hls_demux_get_next_fragment (GstHLSDemux * demux,
111 gboolean caching, GError ** err);
112 static gboolean gst_hls_demux_update_playlist (GstHLSDemux * demux,
113 gboolean update, GError ** err);
114 static void gst_hls_demux_reset (GstHLSDemux * demux, gboolean dispose);
115 static gboolean gst_hls_demux_set_location (GstHLSDemux * demux,
117 static gchar *gst_hls_src_buf_to_utf8_playlist (GstBuffer * buf);
119 #define gst_hls_demux_parent_class parent_class
120 G_DEFINE_TYPE (GstHLSDemux, gst_hls_demux, GST_TYPE_ELEMENT);
123 gst_hls_demux_dispose (GObject * obj)
125 GstHLSDemux *demux = GST_HLS_DEMUX (obj);
127 if (demux->stream_task) {
128 if (GST_TASK_STATE (demux->stream_task) != GST_TASK_STOPPED) {
129 GST_DEBUG_OBJECT (demux, "Leaving streaming task");
130 gst_task_stop (demux->stream_task);
131 g_rec_mutex_lock (&demux->stream_lock);
132 g_rec_mutex_unlock (&demux->stream_lock);
133 gst_task_join (demux->stream_task);
135 gst_object_unref (demux->stream_task);
136 g_rec_mutex_clear (&demux->stream_lock);
137 demux->stream_task = NULL;
140 if (demux->updates_task) {
141 if (GST_TASK_STATE (demux->updates_task) != GST_TASK_STOPPED) {
142 GST_DEBUG_OBJECT (demux, "Leaving updates task");
143 demux->cancelled = TRUE;
144 gst_uri_downloader_cancel (demux->downloader);
145 gst_task_stop (demux->updates_task);
146 g_mutex_lock (&demux->updates_timed_lock);
147 GST_TASK_SIGNAL (demux->updates_task);
148 g_rec_mutex_lock (&demux->updates_lock);
149 g_rec_mutex_unlock (&demux->updates_lock);
150 g_mutex_unlock (&demux->updates_timed_lock);
151 gst_task_join (demux->updates_task);
153 gst_object_unref (demux->updates_task);
154 g_mutex_clear (&demux->updates_timed_lock);
155 g_rec_mutex_clear (&demux->updates_lock);
156 demux->updates_task = NULL;
159 if (demux->downloader != NULL) {
160 g_object_unref (demux->downloader);
161 demux->downloader = NULL;
164 gst_hls_demux_reset (demux, TRUE);
166 g_queue_free (demux->queue);
168 G_OBJECT_CLASS (parent_class)->dispose (obj);
172 gst_hls_demux_class_init (GstHLSDemuxClass * klass)
174 GObjectClass *gobject_class;
175 GstElementClass *element_class;
177 gobject_class = (GObjectClass *) klass;
178 element_class = (GstElementClass *) klass;
180 gobject_class->set_property = gst_hls_demux_set_property;
181 gobject_class->get_property = gst_hls_demux_get_property;
182 gobject_class->dispose = gst_hls_demux_dispose;
184 g_object_class_install_property (gobject_class, PROP_FRAGMENTS_CACHE,
185 g_param_spec_uint ("fragments-cache", "Fragments cache",
186 "Number of fragments needed to be cached to start playing",
187 1, G_MAXUINT, DEFAULT_FRAGMENTS_CACHE,
188 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
190 g_object_class_install_property (gobject_class, PROP_BITRATE_LIMIT,
191 g_param_spec_float ("bitrate-limit",
192 "Bitrate limit in %",
193 "Limit of the available bitrate to use when switching to alternates.",
194 0, 1, DEFAULT_BITRATE_LIMIT,
195 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
197 g_object_class_install_property (gobject_class, PROP_CONNECTION_SPEED,
198 g_param_spec_uint ("connection-speed", "Connection Speed",
199 "Network connection speed in kbps (0 = unknown)",
200 0, G_MAXUINT / 1000, DEFAULT_CONNECTION_SPEED,
201 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
203 element_class->change_state = GST_DEBUG_FUNCPTR (gst_hls_demux_change_state);
205 gst_element_class_add_pad_template (element_class,
206 gst_static_pad_template_get (&srctemplate));
208 gst_element_class_add_pad_template (element_class,
209 gst_static_pad_template_get (&sinktemplate));
211 gst_element_class_set_static_metadata (element_class,
214 "HTTP Live Streaming demuxer",
215 "Marc-Andre Lureau <marcandre.lureau@gmail.com>\n"
216 "Andoni Morales Alastruey <ylatuya@gmail.com>");
218 GST_DEBUG_CATEGORY_INIT (gst_hls_demux_debug, "hlsdemux", 0,
223 gst_hls_demux_init (GstHLSDemux * demux)
226 demux->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
227 gst_pad_set_chain_function (demux->sinkpad,
228 GST_DEBUG_FUNCPTR (gst_hls_demux_chain));
229 gst_pad_set_event_function (demux->sinkpad,
230 GST_DEBUG_FUNCPTR (gst_hls_demux_sink_event));
231 gst_element_add_pad (GST_ELEMENT (demux), demux->sinkpad);
234 demux->downloader = gst_uri_downloader_new ();
236 demux->do_typefind = TRUE;
239 demux->fragments_cache = DEFAULT_FRAGMENTS_CACHE;
240 demux->bitrate_limit = DEFAULT_BITRATE_LIMIT;
241 demux->connection_speed = DEFAULT_CONNECTION_SPEED;
243 demux->queue = g_queue_new ();
246 g_rec_mutex_init (&demux->updates_lock);
247 demux->updates_task =
248 gst_task_new ((GstTaskFunction) gst_hls_demux_updates_loop, demux, NULL);
249 gst_task_set_lock (demux->updates_task, &demux->updates_lock);
250 g_mutex_init (&demux->updates_timed_lock);
253 g_rec_mutex_init (&demux->stream_lock);
255 gst_task_new ((GstTaskFunction) gst_hls_demux_stream_loop, demux, NULL);
256 gst_task_set_lock (demux->stream_task, &demux->stream_lock);
258 demux->have_group_id = FALSE;
259 demux->group_id = G_MAXUINT;
263 gst_hls_demux_set_property (GObject * object, guint prop_id,
264 const GValue * value, GParamSpec * pspec)
266 GstHLSDemux *demux = GST_HLS_DEMUX (object);
269 case PROP_FRAGMENTS_CACHE:
270 demux->fragments_cache = g_value_get_uint (value);
272 case PROP_BITRATE_LIMIT:
273 demux->bitrate_limit = g_value_get_float (value);
275 case PROP_CONNECTION_SPEED:
276 demux->connection_speed = g_value_get_uint (value) * 1000;
279 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
285 gst_hls_demux_get_property (GObject * object, guint prop_id, GValue * value,
288 GstHLSDemux *demux = GST_HLS_DEMUX (object);
291 case PROP_FRAGMENTS_CACHE:
292 g_value_set_uint (value, demux->fragments_cache);
294 case PROP_BITRATE_LIMIT:
295 g_value_set_float (value, demux->bitrate_limit);
297 case PROP_CONNECTION_SPEED:
298 g_value_set_uint (value, demux->connection_speed / 1000);
301 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
306 static GstStateChangeReturn
307 gst_hls_demux_change_state (GstElement * element, GstStateChange transition)
309 GstStateChangeReturn ret;
310 GstHLSDemux *demux = GST_HLS_DEMUX (element);
312 switch (transition) {
313 case GST_STATE_CHANGE_READY_TO_PAUSED:
314 gst_hls_demux_reset (demux, FALSE);
315 gst_uri_downloader_reset (demux->downloader);
321 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
323 switch (transition) {
324 case GST_STATE_CHANGE_PAUSED_TO_READY:
325 demux->cancelled = TRUE;
326 gst_hls_demux_stop (demux);
327 gst_task_join (demux->stream_task);
328 gst_task_join (demux->updates_task);
329 gst_hls_demux_reset (demux, FALSE);
338 gst_hls_demux_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
342 demux = GST_HLS_DEMUX (parent);
344 switch (event->type) {
350 GstSeekType start_type, stop_type;
353 GstClockTime position, current_pos, target_pos;
354 gint current_sequence;
355 GstM3U8MediaFile *file;
357 GST_INFO_OBJECT (demux, "Received GST_EVENT_SEEK");
359 if (gst_m3u8_client_is_live (demux->client)) {
360 GST_WARNING_OBJECT (demux, "Received seek event for live stream");
364 gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
367 if (format != GST_FORMAT_TIME)
370 GST_DEBUG_OBJECT (demux, "seek event, rate: %f start: %" GST_TIME_FORMAT
371 " stop: %" GST_TIME_FORMAT, rate, GST_TIME_ARGS (start),
372 GST_TIME_ARGS (stop));
374 GST_M3U8_CLIENT_LOCK (demux->client);
375 file = GST_M3U8_MEDIA_FILE (demux->client->current->files->data);
376 current_sequence = file->sequence;
378 target_pos = (GstClockTime) start;
379 for (walk = demux->client->current->files; walk; walk = walk->next) {
382 current_sequence = file->sequence;
383 if (current_pos <= target_pos
384 && target_pos < current_pos + file->duration) {
387 current_pos += file->duration;
389 GST_M3U8_CLIENT_UNLOCK (demux->client);
392 GST_WARNING_OBJECT (demux, "Could not find seeked fragment");
396 if (flags & GST_SEEK_FLAG_FLUSH) {
397 GST_DEBUG_OBJECT (demux, "sending flush start");
398 gst_pad_push_event (demux->srcpad, gst_event_new_flush_start ());
401 demux->cancelled = TRUE;
402 gst_task_pause (demux->stream_task);
403 gst_uri_downloader_cancel (demux->downloader);
404 gst_task_stop (demux->updates_task);
405 g_mutex_lock (&demux->updates_timed_lock);
406 GST_TASK_SIGNAL (demux->updates_task);
407 g_mutex_unlock (&demux->updates_timed_lock);
408 g_rec_mutex_lock (&demux->updates_lock);
409 g_rec_mutex_unlock (&demux->updates_lock);
410 gst_task_pause (demux->stream_task);
412 /* wait for streaming to finish */
413 g_rec_mutex_lock (&demux->stream_lock);
415 demux->need_cache = TRUE;
416 while (!g_queue_is_empty (demux->queue)) {
417 GstFragment *fragment = g_queue_pop_head (demux->queue);
418 g_object_unref (fragment);
420 g_queue_clear (demux->queue);
422 GST_M3U8_CLIENT_LOCK (demux->client);
423 GST_DEBUG_OBJECT (demux, "seeking to sequence %d", current_sequence);
424 demux->client->sequence = current_sequence;
425 gst_m3u8_client_get_current_position (demux->client, &position);
426 demux->position_shift = start - position;
427 demux->need_segment = TRUE;
428 GST_M3U8_CLIENT_UNLOCK (demux->client);
430 if (flags & GST_SEEK_FLAG_FLUSH) {
431 GST_DEBUG_OBJECT (demux, "sending flush stop");
432 gst_pad_push_event (demux->srcpad, gst_event_new_flush_stop (TRUE));
435 demux->cancelled = FALSE;
436 gst_uri_downloader_reset (demux->downloader);
437 gst_task_start (demux->stream_task);
438 g_rec_mutex_unlock (&demux->stream_lock);
446 return gst_pad_event_default (pad, parent, event);
450 gst_hls_demux_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
457 demux = GST_HLS_DEMUX (parent);
459 switch (event->type) {
461 gchar *playlist = NULL;
463 if (demux->playlist == NULL) {
464 GST_WARNING_OBJECT (demux, "Received EOS without a playlist.");
468 GST_DEBUG_OBJECT (demux,
469 "Got EOS on the sink pad: main playlist fetched");
471 query = gst_query_new_uri ();
472 ret = gst_pad_peer_query (demux->sinkpad, query);
474 gst_query_parse_uri_redirection (query, &uri);
476 gst_query_parse_uri (query, &uri);
477 gst_hls_demux_set_location (demux, uri);
480 gst_query_unref (query);
482 playlist = gst_hls_src_buf_to_utf8_playlist (demux->playlist);
483 demux->playlist = NULL;
484 if (playlist == NULL) {
485 GST_WARNING_OBJECT (demux, "Error validating first playlist.");
486 } else if (!gst_m3u8_client_update (demux->client, playlist)) {
487 /* In most cases, this will happen if we set a wrong url in the
488 * source element and we have received the 404 HTML response instead of
490 GST_ELEMENT_ERROR (demux, STREAM, DECODE, ("Invalid playlist."),
495 if (!ret && gst_m3u8_client_is_live (demux->client)) {
496 GST_ELEMENT_ERROR (demux, RESOURCE, NOT_FOUND,
497 ("Failed querying the playlist uri, "
498 "required for live sources."), (NULL));
502 gst_task_start (demux->stream_task);
503 gst_event_unref (event);
506 case GST_EVENT_SEGMENT:
507 /* Swallow newsegments, we'll push our own */
508 gst_event_unref (event);
514 return gst_pad_event_default (pad, parent, event);
518 gst_hls_demux_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
520 GstHLSDemux *hlsdemux;
521 gboolean ret = FALSE;
526 hlsdemux = GST_HLS_DEMUX (parent);
528 switch (query->type) {
529 case GST_QUERY_DURATION:{
530 GstClockTime duration = -1;
533 gst_query_parse_duration (query, &fmt, NULL);
534 if (fmt == GST_FORMAT_TIME) {
535 duration = gst_m3u8_client_get_duration (hlsdemux->client);
536 if (GST_CLOCK_TIME_IS_VALID (duration) && duration > 0) {
537 gst_query_set_duration (query, GST_FORMAT_TIME, duration);
541 GST_INFO_OBJECT (hlsdemux, "GST_QUERY_DURATION returns %s with duration %"
542 GST_TIME_FORMAT, ret ? "TRUE" : "FALSE", GST_TIME_ARGS (duration));
546 if (hlsdemux->client) {
547 /* FIXME: Do we answer with the variant playlist, with the current
548 * playlist or the the uri of the least downlowaded fragment? */
549 gst_query_set_uri (query, gst_m3u8_client_get_uri (hlsdemux->client));
553 case GST_QUERY_SEEKING:{
557 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
558 GST_INFO_OBJECT (hlsdemux, "Received GST_QUERY_SEEKING with format %d",
560 if (fmt == GST_FORMAT_TIME) {
561 GstClockTime duration;
563 duration = gst_m3u8_client_get_duration (hlsdemux->client);
564 if (GST_CLOCK_TIME_IS_VALID (duration) && duration > 0)
567 gst_query_set_seeking (query, fmt,
568 !gst_m3u8_client_is_live (hlsdemux->client), 0, stop);
570 GST_INFO_OBJECT (hlsdemux, "GST_QUERY_SEEKING returning with stop : %"
571 GST_TIME_FORMAT, GST_TIME_ARGS (stop));
576 /* Don't fordward queries upstream because of the special nature of this
577 * "demuxer", which relies on the upstream element only to be fed with the
586 gst_hls_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
588 GstHLSDemux *demux = GST_HLS_DEMUX (parent);
590 if (demux->playlist == NULL)
591 demux->playlist = buf;
593 demux->playlist = gst_buffer_append (demux->playlist, buf);
599 gst_hls_demux_pause_tasks (GstHLSDemux * demux, gboolean caching)
601 if (GST_TASK_STATE (demux->updates_task) != GST_TASK_STOPPED) {
602 demux->cancelled = TRUE;
603 gst_uri_downloader_cancel (demux->downloader);
604 gst_task_pause (demux->updates_task);
606 g_mutex_lock (&demux->updates_timed_lock);
607 GST_TASK_SIGNAL (demux->updates_task);
609 g_mutex_unlock (&demux->updates_timed_lock);
612 if (GST_TASK_STATE (demux->stream_task) != GST_TASK_STOPPED) {
613 demux->stop_stream_task = TRUE;
614 gst_task_pause (demux->stream_task);
619 gst_hls_demux_stop (GstHLSDemux * demux)
621 gst_uri_downloader_cancel (demux->downloader);
623 if (GST_TASK_STATE (demux->updates_task) != GST_TASK_STOPPED) {
624 demux->cancelled = TRUE;
625 gst_uri_downloader_cancel (demux->downloader);
626 gst_task_stop (demux->updates_task);
627 g_mutex_lock (&demux->updates_timed_lock);
628 GST_TASK_SIGNAL (demux->updates_task);
629 g_mutex_unlock (&demux->updates_timed_lock);
630 g_rec_mutex_lock (&demux->updates_lock);
631 g_rec_mutex_unlock (&demux->updates_lock);
634 if (GST_TASK_STATE (demux->stream_task) != GST_TASK_STOPPED) {
635 demux->stop_stream_task = TRUE;
636 gst_task_stop (demux->stream_task);
637 g_rec_mutex_lock (&demux->stream_lock);
638 g_rec_mutex_unlock (&demux->stream_lock);
643 switch_pads (GstHLSDemux * demux, GstCaps * newcaps)
645 GstPad *oldpad = demux->srcpad;
650 GST_DEBUG ("Switching pads (oldpad:%p) with caps: %" GST_PTR_FORMAT, oldpad,
653 /* First create and activate new pad */
654 name = g_strdup_printf ("src_%u", demux->srcpad_counter++);
655 demux->srcpad = gst_pad_new_from_static_template (&srctemplate, name);
657 gst_pad_set_event_function (demux->srcpad,
658 GST_DEBUG_FUNCPTR (gst_hls_demux_src_event));
659 gst_pad_set_query_function (demux->srcpad,
660 GST_DEBUG_FUNCPTR (gst_hls_demux_src_query));
661 gst_pad_use_fixed_caps (demux->srcpad);
662 gst_pad_set_active (demux->srcpad, TRUE);
665 gst_pad_create_stream_id (demux->srcpad, GST_ELEMENT_CAST (demux), NULL);
667 event = gst_pad_get_sticky_event (demux->sinkpad, GST_EVENT_STREAM_START, 0);
669 if (gst_event_parse_group_id (event, &demux->group_id))
670 demux->have_group_id = TRUE;
672 demux->have_group_id = FALSE;
673 gst_event_unref (event);
674 } else if (!demux->have_group_id) {
675 demux->have_group_id = TRUE;
676 demux->group_id = gst_util_group_id_next ();
678 event = gst_event_new_stream_start (stream_id);
679 if (demux->have_group_id)
680 gst_event_set_group_id (event, demux->group_id);
682 gst_pad_push_event (demux->srcpad, event);
685 gst_pad_set_caps (demux->srcpad, newcaps);
687 gst_element_add_pad (GST_ELEMENT (demux), demux->srcpad);
689 gst_element_no_more_pads (GST_ELEMENT (demux));
693 gst_pad_push_event (oldpad, gst_event_new_eos ());
694 gst_pad_set_active (oldpad, FALSE);
695 gst_element_remove_pad (GST_ELEMENT (demux), oldpad);
700 gst_hls_demux_stream_loop (GstHLSDemux * demux)
702 GstFragment *fragment = NULL;
705 GstCaps *bufcaps, *srccaps = NULL;
707 /* Loop for the source pad task. The task is started when we have
708 * received the main playlist from the source element. It tries first to
709 * cache the first fragments and then it waits until it has more data in the
710 * queue. This task is woken up when we push a new fragment to the queue or
711 * when we reached the end of the playlist */
712 GST_DEBUG_OBJECT (demux, "Enter task");
714 if (G_UNLIKELY (demux->need_cache)) {
715 if (!gst_hls_demux_cache_fragments (demux))
718 /* Pop off the first fragment immediately so the
719 * update task can get the next one already */
720 fragment = g_queue_pop_head (demux->queue);
722 /* we can start now the updates thread (only if on playing) */
723 gst_task_start (demux->updates_task);
724 GST_INFO_OBJECT (demux, "First fragments cached successfully");
727 if (!fragment && g_queue_is_empty (demux->queue)) {
728 if (demux->end_of_playlist)
729 goto end_of_playlist;
734 /* If we didn't get our fragment above already */
736 fragment = g_queue_pop_head (demux->queue);
738 /* Figure out if we need to create/switch pads */
739 if (G_LIKELY (demux->srcpad))
740 srccaps = gst_pad_get_current_caps (demux->srcpad);
741 bufcaps = gst_fragment_get_caps (fragment);
742 if (G_UNLIKELY (!bufcaps)) {
744 gst_caps_unref (srccaps);
745 g_object_unref (fragment);
749 buf = gst_fragment_get_buffer (fragment);
751 if (G_UNLIKELY (!srccaps || !gst_caps_is_equal_fixed (bufcaps, srccaps)
752 || demux->need_segment)) {
753 switch_pads (demux, bufcaps);
754 demux->need_segment = TRUE;
756 gst_caps_unref (bufcaps);
757 if (G_LIKELY (srccaps))
758 gst_caps_unref (srccaps);
759 g_object_unref (fragment);
761 if (demux->need_segment) {
763 GstClockTime start = GST_BUFFER_PTS (buf);
765 start += demux->position_shift;
766 /* And send a newsegment */
767 GST_DEBUG_OBJECT (demux, "Sending new-segment. segment start:%"
768 GST_TIME_FORMAT, GST_TIME_ARGS (start));
769 gst_segment_init (&segment, GST_FORMAT_TIME);
770 segment.start = start;
771 segment.time = start;
772 gst_pad_push_event (demux->srcpad, gst_event_new_segment (&segment));
773 demux->need_segment = FALSE;
774 demux->position_shift = 0;
777 GST_DEBUG_OBJECT (demux, "Pushing buffer %p", buf);
779 ret = gst_pad_push (demux->srcpad, buf);
780 if (ret != GST_FLOW_OK)
783 GST_DEBUG_OBJECT (demux, "Pushed buffer");
789 GST_DEBUG_OBJECT (demux, "Reached end of playlist, sending EOS");
790 gst_pad_push_event (demux->srcpad, gst_event_new_eos ());
791 gst_hls_demux_pause_tasks (demux, FALSE);
797 /* Pausing a stopped task will start it */
798 if (GST_TASK_STATE (demux->stream_task) != GST_TASK_STOPPED)
799 gst_task_pause (demux->stream_task);
800 if (!demux->cancelled) {
801 GST_ELEMENT_ERROR (demux, RESOURCE, NOT_FOUND,
802 ("Could not cache the first fragments"), (NULL));
803 gst_hls_demux_pause_tasks (demux, FALSE);
810 GST_ELEMENT_ERROR (demux, STREAM, TYPE_NOT_FOUND,
811 ("Could not determine type of stream"), (NULL));
812 gst_hls_demux_pause_tasks (demux, FALSE);
818 if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS) {
819 GST_ELEMENT_ERROR (demux, STREAM, FAILED, (NULL),
820 ("stream stopped, reason %s", gst_flow_get_name (ret)));
821 gst_pad_push_event (demux->srcpad, gst_event_new_eos ());
823 GST_DEBUG_OBJECT (demux, "stream stopped, reason %s",
824 gst_flow_get_name (ret));
826 gst_hls_demux_pause_tasks (demux, FALSE);
832 GST_DEBUG_OBJECT (demux, "Pause task");
833 /* Pausing a stopped task will start it */
834 if (GST_TASK_STATE (demux->stream_task) != GST_TASK_STOPPED)
835 gst_task_pause (demux->stream_task);
841 gst_hls_demux_reset (GstHLSDemux * demux, gboolean dispose)
843 demux->need_cache = TRUE;
844 demux->end_of_playlist = FALSE;
845 demux->cancelled = FALSE;
846 demux->do_typefind = TRUE;
848 g_free (demux->key_url);
849 demux->key_url = NULL;
851 if (demux->key_fragment)
852 g_object_unref (demux->key_fragment);
853 demux->key_fragment = NULL;
855 if (demux->input_caps) {
856 gst_caps_unref (demux->input_caps);
857 demux->input_caps = NULL;
860 if (demux->playlist) {
861 gst_buffer_unref (demux->playlist);
862 demux->playlist = NULL;
866 gst_m3u8_client_free (demux->client);
867 demux->client = NULL;
871 demux->client = gst_m3u8_client_new ("");
874 while (!g_queue_is_empty (demux->queue)) {
875 GstFragment *fragment = g_queue_pop_head (demux->queue);
876 g_object_unref (fragment);
878 g_queue_clear (demux->queue);
880 demux->position_shift = 0;
881 demux->need_segment = TRUE;
883 demux->have_group_id = FALSE;
884 demux->group_id = G_MAXUINT;
886 demux->srcpad_counter = 0;
888 gst_element_remove_pad (GST_ELEMENT_CAST (demux), demux->srcpad);
889 demux->srcpad = NULL;
894 gst_hls_demux_set_location (GstHLSDemux * demux, const gchar * uri)
897 gst_m3u8_client_free (demux->client);
898 demux->client = gst_m3u8_client_new (uri);
899 GST_INFO_OBJECT (demux, "Changed location: %s", uri);
904 gst_hls_demux_updates_loop (GstHLSDemux * demux)
906 /* Loop for the updates. It's started when the first fragments are cached and
907 * schedules the next update of the playlist (for lives sources) and the next
908 * update of fragments. When a new fragment is downloaded, it compares the
909 * download time with the next scheduled update to check if we can or should
910 * switch to a different bitrate */
912 /* block until the next scheduled update or the signal to quit this thread */
913 g_mutex_lock (&demux->updates_timed_lock);
914 GST_DEBUG_OBJECT (demux, "Started updates task");
916 if (demux->cancelled)
919 /* fetch the next fragment */
920 if (g_queue_get_length (demux->queue) < demux->fragments_cache) {
923 GST_DEBUG_OBJECT (demux, "queue not full, get next fragment");
924 if (!gst_hls_demux_get_next_fragment (demux, FALSE, &err)) {
925 if (demux->cancelled) {
926 g_clear_error (&err);
928 } else if (!demux->end_of_playlist) {
929 demux->client->update_failed_count++;
930 if (demux->client->update_failed_count < DEFAULT_FAILED_COUNT) {
931 GST_WARNING_OBJECT (demux, "Could not fetch the next fragment");
932 g_clear_error (&err);
935 gst_element_post_message (GST_ELEMENT_CAST (demux),
936 gst_message_new_error (GST_OBJECT_CAST (demux), err,
937 "Could not fetch the next fragment"));
938 g_clear_error (&err);
943 demux->client->update_failed_count = 0;
945 if (demux->cancelled)
948 /* try to switch to another bitrate if needed */
949 gst_hls_demux_switch_playlist (demux);
953 /* schedule the next update */
954 gst_hls_demux_schedule (demux);
956 /* block until the next scheduled update or the signal to quit this thread */
957 GST_DEBUG_OBJECT (demux, "Waiting");
958 if (g_cond_wait_until (GST_TASK_GET_COND (demux->updates_task),
959 &demux->updates_timed_lock, demux->next_update)) {
960 GST_DEBUG_OBJECT (demux, "Unlocked");
963 GST_DEBUG_OBJECT (demux, "Continue");
965 if (demux->cancelled)
968 /* update the playlist for live sources */
969 if (gst_m3u8_client_is_live (demux->client)) {
972 if (!gst_hls_demux_update_playlist (demux, TRUE, &err)) {
973 if (demux->cancelled)
975 demux->client->update_failed_count++;
976 if (demux->client->update_failed_count < DEFAULT_FAILED_COUNT) {
977 GST_WARNING_OBJECT (demux, "Could not update the playlist");
980 gst_element_post_message (GST_ELEMENT_CAST (demux),
981 gst_message_new_error (GST_OBJECT_CAST (demux), err,
982 "Could not update the playlist"));
989 /* if it's a live source and the playlist couldn't be updated, there aren't
990 * more fragments in the playlist, so we just wait for the next schedulled
992 if (gst_m3u8_client_is_live (demux->client) &&
993 demux->client->update_failed_count > 0) {
994 GST_WARNING_OBJECT (demux,
995 "The playlist hasn't been updated, failed count is %d",
996 demux->client->update_failed_count);
1000 if (demux->cancelled)
1006 GST_DEBUG_OBJECT (demux, "Stopped updates task");
1007 g_mutex_unlock (&demux->updates_timed_lock);
1013 GST_DEBUG_OBJECT (demux, "Stopped updates task because of error");
1014 gst_hls_demux_pause_tasks (demux, TRUE);
1015 g_mutex_unlock (&demux->updates_timed_lock);
1020 gst_hls_demux_cache_fragments (GstHLSDemux * demux)
1024 /* If this playlist is a variant playlist, select the first one
1026 if (gst_m3u8_client_has_variant_playlist (demux->client)) {
1027 GstM3U8 *child = NULL;
1030 if (demux->connection_speed == 0) {
1032 GST_M3U8_CLIENT_LOCK (demux->client);
1033 child = demux->client->main->current_variant->data;
1034 GST_M3U8_CLIENT_UNLOCK (demux->client);
1036 GList *tmp = gst_m3u8_client_get_playlist_for_bitrate (demux->client,
1037 demux->connection_speed);
1039 child = GST_M3U8 (tmp->data);
1042 gst_m3u8_client_set_current (demux->client, child);
1043 if (!gst_hls_demux_update_playlist (demux, FALSE, &err)) {
1044 gst_element_post_message (GST_ELEMENT_CAST (demux),
1045 gst_message_new_error (GST_OBJECT_CAST (demux), err,
1046 "Could not fetch the child playlist"));
1052 if (!gst_m3u8_client_is_live (demux->client)) {
1053 GstClockTime duration = gst_m3u8_client_get_duration (demux->client);
1055 GST_DEBUG_OBJECT (demux, "Sending duration message : %" GST_TIME_FORMAT,
1056 GST_TIME_ARGS (duration));
1057 if (duration != GST_CLOCK_TIME_NONE)
1058 gst_element_post_message (GST_ELEMENT (demux),
1059 gst_message_new_duration_changed (GST_OBJECT (demux)));
1062 /* Cache the first fragments */
1063 for (i = 0; i < demux->fragments_cache; i++) {
1066 gst_element_post_message (GST_ELEMENT (demux),
1067 gst_message_new_buffering (GST_OBJECT (demux),
1068 100 * i / demux->fragments_cache));
1069 demux->next_update = g_get_monotonic_time ();
1070 if (!gst_hls_demux_get_next_fragment (demux, TRUE, &err)) {
1071 if (demux->end_of_playlist)
1073 if (!demux->cancelled) {
1074 gst_element_post_message (GST_ELEMENT_CAST (demux),
1075 gst_message_new_error (GST_OBJECT_CAST (demux), err,
1076 "Error caching the first fragments"));
1078 g_clear_error (&err);
1081 /* make sure we stop caching fragments if something cancelled it */
1082 if (demux->cancelled)
1084 gst_hls_demux_switch_playlist (demux);
1086 gst_element_post_message (GST_ELEMENT (demux),
1087 gst_message_new_buffering (GST_OBJECT (demux), 100));
1089 /* Start downloading 1s early to keep the risk of
1090 * underflows lower */
1091 demux->next_update = g_get_monotonic_time () - G_USEC_PER_SEC;
1093 demux->need_cache = FALSE;
1098 gst_hls_src_buf_to_utf8_playlist (GstBuffer * buf)
1103 if (!gst_buffer_map (buf, &info, GST_MAP_READ))
1106 if (!g_utf8_validate ((gchar *) info.data, info.size, NULL))
1107 goto validate_error;
1109 /* alloc size + 1 to end with a null character */
1110 playlist = g_malloc0 (info.size + 1);
1111 memcpy (playlist, info.data, info.size);
1113 gst_buffer_unmap (buf, &info);
1114 gst_buffer_unref (buf);
1118 gst_buffer_unmap (buf, &info);
1120 gst_buffer_unref (buf);
1125 gst_hls_demux_update_playlist (GstHLSDemux * demux, gboolean update,
1128 GstFragment *download;
1131 gboolean updated = FALSE;
1133 const gchar *uri = gst_m3u8_client_get_current_uri (demux->client);
1135 download = gst_uri_downloader_fetch_uri (demux->downloader, uri, TRUE, err);
1136 if (download == NULL)
1139 buf = gst_fragment_get_buffer (download);
1140 playlist = gst_hls_src_buf_to_utf8_playlist (buf);
1141 g_object_unref (download);
1143 if (playlist == NULL) {
1144 GST_WARNING_OBJECT (demux, "Couldn't validate playlist encoding");
1145 g_set_error (err, GST_STREAM_ERROR, GST_STREAM_ERROR_WRONG_TYPE,
1146 "Couldn't validate playlist encoding");
1150 updated = gst_m3u8_client_update (demux->client, playlist);
1152 GST_WARNING_OBJECT (demux, "Couldn't update playlist");
1153 g_set_error (err, GST_STREAM_ERROR, GST_STREAM_ERROR_FAILED,
1154 "Couldn't update playlist");
1158 /* If it's a live source, do not let the sequence number go beyond
1159 * three fragments before the end of the list */
1160 if (updated && update == FALSE && demux->client->current &&
1161 gst_m3u8_client_is_live (demux->client)) {
1162 guint last_sequence;
1164 GST_M3U8_CLIENT_LOCK (demux->client);
1166 GST_M3U8_MEDIA_FILE (g_list_last (demux->client->current->
1167 files)->data)->sequence;
1169 if (demux->client->sequence >= last_sequence - 3) {
1170 GST_DEBUG_OBJECT (demux, "Sequence is beyond playlist. Moving back to %d",
1172 demux->need_segment = TRUE;
1173 demux->client->sequence = last_sequence - 3;
1175 GST_M3U8_CLIENT_UNLOCK (demux->client);
1182 gst_hls_demux_change_playlist (GstHLSDemux * demux, guint max_bitrate)
1184 GList *previous_variant, *current_variant;
1185 gint old_bandwidth, new_bandwidth;
1187 /* If user specifies a connection speed never use a playlist with a bandwidth
1188 * superior than it */
1189 if (demux->connection_speed != 0 && max_bitrate > demux->connection_speed)
1190 max_bitrate = demux->connection_speed;
1192 previous_variant = demux->client->main->current_variant;
1193 current_variant = gst_m3u8_client_get_playlist_for_bitrate (demux->client,
1196 retry_failover_protection:
1197 old_bandwidth = GST_M3U8 (previous_variant->data)->bandwidth;
1198 new_bandwidth = GST_M3U8 (current_variant->data)->bandwidth;
1200 /* Don't do anything else if the playlist is the same */
1201 if (new_bandwidth == old_bandwidth) {
1205 demux->client->main->current_variant = current_variant;
1206 GST_M3U8_CLIENT_UNLOCK (demux->client);
1208 gst_m3u8_client_set_current (demux->client, current_variant->data);
1210 GST_INFO_OBJECT (demux, "Client was on %dbps, max allowed is %dbps, switching"
1211 " to bitrate %dbps", old_bandwidth, max_bitrate, new_bandwidth);
1213 if (gst_hls_demux_update_playlist (demux, FALSE, NULL)) {
1216 s = gst_structure_new ("playlist",
1217 "uri", G_TYPE_STRING, gst_m3u8_client_get_current_uri (demux->client),
1218 "bitrate", G_TYPE_INT, new_bandwidth, NULL);
1219 gst_element_post_message (GST_ELEMENT_CAST (demux),
1220 gst_message_new_element (GST_OBJECT_CAST (demux), s));
1222 GList *failover = NULL;
1224 GST_INFO_OBJECT (demux, "Unable to update playlist. Switching back");
1225 GST_M3U8_CLIENT_LOCK (demux->client);
1227 failover = g_list_previous (current_variant);
1228 if (failover && new_bandwidth == GST_M3U8 (failover->data)->bandwidth) {
1229 current_variant = failover;
1230 goto retry_failover_protection;
1233 demux->client->main->current_variant = previous_variant;
1234 GST_M3U8_CLIENT_UNLOCK (demux->client);
1235 gst_m3u8_client_set_current (demux->client, previous_variant->data);
1236 /* Try a lower bitrate (or stop if we just tried the lowest) */
1237 if (new_bandwidth ==
1238 GST_M3U8 (g_list_first (demux->client->main->lists)->data)->bandwidth)
1241 return gst_hls_demux_change_playlist (demux, new_bandwidth - 1);
1244 /* Force typefinding since we might have changed media type */
1245 demux->do_typefind = TRUE;
1251 gst_hls_demux_schedule (GstHLSDemux * demux)
1253 gfloat update_factor;
1256 /* As defined in §6.3.4. Reloading the Playlist file:
1257 * "If the client reloads a Playlist file and finds that it has not
1258 * changed then it MUST wait for a period of time before retrying. The
1259 * minimum delay is a multiple of the target duration. This multiple is
1260 * 0.5 for the first attempt, 1.5 for the second, and 3.0 thereafter."
1262 count = demux->client->update_failed_count;
1264 update_factor = update_interval_factor[count];
1266 update_factor = update_interval_factor[3];
1268 /* schedule the next update using the target duration field of the
1270 demux->next_update +=
1271 gst_util_uint64_scale (gst_m3u8_client_get_current_fragment_duration
1272 (demux->client), G_USEC_PER_SEC * update_factor, GST_SECOND);
1273 GST_DEBUG_OBJECT (demux, "Next update scheduled at %" G_GINT64_FORMAT,
1274 demux->next_update);
1280 gst_hls_demux_switch_playlist (GstHLSDemux * demux)
1285 GstFragment *fragment;
1288 GST_M3U8_CLIENT_LOCK (demux->client);
1289 fragment = g_queue_peek_tail (demux->queue);
1290 if (!demux->client->main->lists || !fragment) {
1291 GST_M3U8_CLIENT_UNLOCK (demux->client);
1294 GST_M3U8_CLIENT_UNLOCK (demux->client);
1296 /* compare the time when the fragment was downloaded with the time when it was
1298 diff = g_get_monotonic_time () - demux->next_update;
1299 buffer = gst_fragment_get_buffer (fragment);
1300 size = gst_buffer_get_size (buffer);
1301 bitrate = (size * 8) / ((double) diff / G_USEC_PER_SEC);
1303 GST_DEBUG ("Downloaded %d bytes in %" GST_TIME_FORMAT ". Bitrate is : %d",
1304 (guint) size, GST_TIME_ARGS (diff), bitrate);
1306 gst_buffer_unref (buffer);
1307 return gst_hls_demux_change_playlist (demux, bitrate * demux->bitrate_limit);
1312 decrypt_fragment (GstHLSDemux * demux, gsize length,
1313 const guint8 * encrypted_data, guint8 * decrypted_data,
1314 const guint8 * key_data, const guint8 * iv_data)
1316 struct CBC_CTX (struct aes_ctx, AES_BLOCK_SIZE) aes_ctx;
1318 if (length % 16 != 0)
1321 aes_set_decrypt_key (&aes_ctx.ctx, 16, key_data);
1322 CBC_SET_IV (&aes_ctx, iv_data);
1324 CBC_DECRYPT (&aes_ctx, aes_decrypt, length, decrypted_data, encrypted_data);
1330 decrypt_fragment (GstHLSDemux * demux, gsize length,
1331 const guint8 * encrypted_data, guint8 * decrypted_data,
1332 const guint8 * key_data, const guint8 * iv_data)
1334 gcry_cipher_hd_t aes_ctx = NULL;
1335 gcry_error_t err = 0;
1336 gboolean ret = FALSE;
1339 gcry_cipher_open (&aes_ctx, GCRY_CIPHER_AES128, GCRY_CIPHER_MODE_CBC, 0);
1342 err = gcry_cipher_setkey (aes_ctx, key_data, 16);
1345 err = gcry_cipher_setiv (aes_ctx, iv_data, 16);
1348 err = gcry_cipher_decrypt (aes_ctx, decrypted_data, length,
1349 encrypted_data, length);
1357 gcry_cipher_close (aes_ctx);
1363 static GstFragment *
1364 gst_hls_demux_decrypt_fragment (GstHLSDemux * demux,
1365 GstFragment * encrypted_fragment, const gchar * key, const guint8 * iv,
1368 GstFragment *key_fragment, *ret = NULL;
1369 GstBuffer *key_buffer, *encrypted_buffer, *decrypted_buffer;
1370 GstMapInfo key_info, encrypted_info, decrypted_info;
1371 gsize unpadded_size;
1373 if (demux->key_url && strcmp (demux->key_url, key) == 0) {
1374 key_fragment = g_object_ref (demux->key_fragment);
1376 g_free (demux->key_url);
1377 demux->key_url = NULL;
1379 if (demux->key_fragment)
1380 g_object_unref (demux->key_fragment);
1381 demux->key_fragment = NULL;
1383 GST_INFO_OBJECT (demux, "Fetching key %s", key);
1385 gst_uri_downloader_fetch_uri (demux->downloader, key, FALSE, err);
1386 if (key_fragment == NULL)
1388 demux->key_url = g_strdup (key);
1389 demux->key_fragment = g_object_ref (key_fragment);
1392 key_buffer = gst_fragment_get_buffer (key_fragment);
1393 encrypted_buffer = gst_fragment_get_buffer (encrypted_fragment);
1395 gst_buffer_new_allocate (NULL, gst_buffer_get_size (encrypted_buffer),
1398 gst_buffer_map (key_buffer, &key_info, GST_MAP_READ);
1399 gst_buffer_map (encrypted_buffer, &encrypted_info, GST_MAP_READ);
1400 gst_buffer_map (decrypted_buffer, &decrypted_info, GST_MAP_WRITE);
1402 if (key_info.size != 16)
1404 if (!decrypt_fragment (demux, encrypted_info.size,
1405 encrypted_info.data, decrypted_info.data, key_info.data, iv))
1408 /* Handle pkcs7 unpadding here */
1410 decrypted_info.size - decrypted_info.data[decrypted_info.size - 1];
1412 gst_buffer_unmap (decrypted_buffer, &decrypted_info);
1413 gst_buffer_unmap (encrypted_buffer, &encrypted_info);
1414 gst_buffer_unmap (key_buffer, &key_info);
1416 gst_buffer_resize (decrypted_buffer, 0, unpadded_size);
1418 gst_buffer_unref (key_buffer);
1419 gst_buffer_unref (encrypted_buffer);
1420 g_object_unref (key_fragment);
1422 ret = gst_fragment_new ();
1423 gst_fragment_add_buffer (ret, decrypted_buffer);
1424 ret->completed = TRUE;
1426 g_object_unref (encrypted_fragment);
1430 GST_ERROR_OBJECT (demux, "Failed to decrypt fragment");
1431 g_set_error (err, GST_STREAM_ERROR, GST_STREAM_ERROR_DECRYPT,
1432 "Failed to decrypt fragment");
1434 gst_buffer_unmap (decrypted_buffer, &decrypted_info);
1435 gst_buffer_unmap (encrypted_buffer, &encrypted_info);
1436 gst_buffer_unmap (key_buffer, &key_info);
1438 gst_buffer_unref (key_buffer);
1439 gst_buffer_unref (encrypted_buffer);
1440 gst_buffer_unref (decrypted_buffer);
1442 g_object_unref (key_fragment);
1443 g_object_unref (encrypted_fragment);
1448 gst_hls_demux_get_next_fragment (GstHLSDemux * demux, gboolean caching,
1451 GstFragment *download;
1452 const gchar *next_fragment_uri;
1453 GstClockTime duration;
1454 GstClockTime timestamp;
1457 const gchar *key = NULL;
1458 const guint8 *iv = NULL;
1460 if (!gst_m3u8_client_get_next_fragment (demux->client, &discont,
1461 &next_fragment_uri, &duration, ×tamp, &key, &iv)) {
1462 GST_INFO_OBJECT (demux, "This playlist doesn't contain more fragments");
1463 demux->end_of_playlist = TRUE;
1464 gst_task_start (demux->stream_task);
1468 GST_INFO_OBJECT (demux, "Fetching next fragment %s", next_fragment_uri);
1470 download = gst_uri_downloader_fetch_uri (demux->downloader,
1471 next_fragment_uri, FALSE, err);
1473 if (download == NULL)
1477 download = gst_hls_demux_decrypt_fragment (demux, download, key, iv, err);
1478 if (download == NULL)
1482 buf = gst_fragment_get_buffer (download);
1484 GST_DEBUG_OBJECT (demux, "set fragment pts=%" GST_TIME_FORMAT " duration=%"
1485 GST_TIME_FORMAT, GST_TIME_ARGS (timestamp), GST_TIME_ARGS (duration));
1487 GST_BUFFER_DURATION (buf) = duration;
1488 GST_BUFFER_PTS (buf) = timestamp;
1490 /* We actually need to do this every time we switch bitrate */
1491 if (G_UNLIKELY (demux->do_typefind)) {
1492 GstCaps *caps = gst_fragment_get_caps (download);
1494 if (G_UNLIKELY (!caps)) {
1495 GST_ELEMENT_ERROR (demux, STREAM, TYPE_NOT_FOUND,
1496 ("Could not determine type of stream"), (NULL));
1497 gst_buffer_unref (buf);
1498 g_object_unref (download);
1502 if (!demux->input_caps || !gst_caps_is_equal (caps, demux->input_caps)) {
1503 gst_caps_replace (&demux->input_caps, caps);
1504 /* gst_pad_set_caps (demux->srcpad, demux->input_caps); */
1505 GST_INFO_OBJECT (demux, "Input source caps: %" GST_PTR_FORMAT,
1507 demux->do_typefind = FALSE;
1509 gst_caps_unref (caps);
1511 gst_fragment_set_caps (download, demux->input_caps);
1515 GST_DEBUG_OBJECT (demux, "Marking fragment as discontinuous");
1516 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
1519 /* The buffer ref is still kept inside the fragment download */
1520 gst_buffer_unref (buf);
1522 GST_DEBUG_OBJECT (demux, "Pushing fragment in queue");
1523 g_queue_push_tail (demux->queue, download);
1525 GST_TASK_SIGNAL (demux->updates_task);
1526 gst_task_start (demux->stream_task);