1 /* GStreamer ASF/WMV/WMA demuxer
2 * Copyright (C) 1999 Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) 2006-2009 Tim-Philipp Müller <tim centricular net>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
24 * stop if at end of segment if != end of file, ie. demux->segment.stop
26 * - fix packet parsing:
27 * there's something wrong with timestamps for packets with keyframes,
35 #include <gst/gstutils.h>
36 #include <gst/base/gstbytereader.h>
37 #include <gst/base/gsttypefindhelper.h>
38 #include <gst/riff/riff-media.h>
39 #include <gst/tag/tag.h>
40 #include <gst/gst-i18n-plugin.h>
41 #include <gst/video/video.h>
46 #include "gstasfdemux.h"
47 #include "asfheaders.h"
48 #include "asfpacket.h"
50 static GstStaticPadTemplate gst_asf_demux_sink_template =
51 GST_STATIC_PAD_TEMPLATE ("sink",
54 GST_STATIC_CAPS ("video/x-ms-asf")
57 static GstStaticPadTemplate audio_src_template =
58 GST_STATIC_PAD_TEMPLATE ("audio_%u",
63 static GstStaticPadTemplate video_src_template =
64 GST_STATIC_PAD_TEMPLATE ("video_%u",
69 /* size of an ASF object header, ie. GUID (16 bytes) + object size (8 bytes) */
70 #define ASF_OBJECT_HEADER_SIZE (16+8)
72 /* FIXME: get rid of this */
73 /* abuse this GstFlowReturn enum for internal usage */
74 #define ASF_FLOW_NEED_MORE_DATA 99
76 #define gst_asf_get_flow_name(flow) \
77 (flow == ASF_FLOW_NEED_MORE_DATA) ? \
78 "need-more-data" : gst_flow_get_name (flow)
80 GST_DEBUG_CATEGORY (asfdemux_dbg);
82 static GstStateChangeReturn gst_asf_demux_change_state (GstElement * element,
83 GstStateChange transition);
84 static gboolean gst_asf_demux_element_send_event (GstElement * element,
86 static gboolean gst_asf_demux_send_event_unlocked (GstASFDemux * demux,
88 static gboolean gst_asf_demux_handle_src_query (GstPad * pad,
89 GstObject * parent, GstQuery * query);
90 static GstFlowReturn gst_asf_demux_chain (GstPad * pad, GstObject * parent,
92 static gboolean gst_asf_demux_sink_event (GstPad * pad, GstObject * parent,
94 static GstFlowReturn gst_asf_demux_process_object (GstASFDemux * demux,
95 guint8 ** p_data, guint64 * p_size);
96 static gboolean gst_asf_demux_activate (GstPad * sinkpad, GstObject * parent);
97 static gboolean gst_asf_demux_activate_mode (GstPad * sinkpad,
98 GstObject * parent, GstPadMode mode, gboolean active);
99 static void gst_asf_demux_loop (GstASFDemux * demux);
101 gst_asf_demux_process_queued_extended_stream_objects (GstASFDemux * demux);
102 static gboolean gst_asf_demux_pull_headers (GstASFDemux * demux,
103 GstFlowReturn * pflow);
104 static GstFlowReturn gst_asf_demux_pull_indices (GstASFDemux * demux);
105 static void gst_asf_demux_reset_stream_state_after_discont (GstASFDemux * asf);
107 gst_asf_demux_parse_data_object_start (GstASFDemux * demux, guint8 * data);
108 static void gst_asf_demux_descramble_buffer (GstASFDemux * demux,
109 AsfStream * stream, GstBuffer ** p_buffer);
110 static void gst_asf_demux_activate_stream (GstASFDemux * demux,
112 static GstStructure *gst_asf_demux_get_metadata_for_stream (GstASFDemux * d,
114 static GstFlowReturn gst_asf_demux_push_complete_payloads (GstASFDemux * demux,
117 #define gst_asf_demux_parent_class parent_class
118 G_DEFINE_TYPE (GstASFDemux, gst_asf_demux, GST_TYPE_ELEMENT);
121 gst_asf_demux_class_init (GstASFDemuxClass * klass)
123 GstElementClass *gstelement_class;
125 gstelement_class = (GstElementClass *) klass;
127 gst_element_class_set_static_metadata (gstelement_class, "ASF Demuxer",
129 "Demultiplexes ASF Streams", "Owen Fraser-Green <owen@discobabe.net>");
131 gst_element_class_add_static_pad_template (gstelement_class,
132 &audio_src_template);
133 gst_element_class_add_static_pad_template (gstelement_class,
134 &video_src_template);
135 gst_element_class_add_static_pad_template (gstelement_class,
136 &gst_asf_demux_sink_template);
138 gstelement_class->change_state =
139 GST_DEBUG_FUNCPTR (gst_asf_demux_change_state);
140 gstelement_class->send_event =
141 GST_DEBUG_FUNCPTR (gst_asf_demux_element_send_event);
145 gst_asf_demux_free_stream (GstASFDemux * demux, AsfStream * stream)
147 gst_caps_replace (&stream->caps, NULL);
148 if (stream->pending_tags) {
149 gst_tag_list_unref (stream->pending_tags);
150 stream->pending_tags = NULL;
152 if (stream->streamheader) {
153 gst_buffer_unref (stream->streamheader);
154 stream->streamheader = NULL;
157 if (stream->active) {
158 gst_element_remove_pad (GST_ELEMENT_CAST (demux), stream->pad);
159 gst_flow_combiner_remove_pad (demux->flowcombiner, stream->pad);
161 gst_object_unref (stream->pad);
165 if (stream->payloads) {
166 while (stream->payloads->len > 0) {
170 last = stream->payloads->len - 1;
171 payload = &g_array_index (stream->payloads, AsfPayload, last);
172 gst_buffer_replace (&payload->buf, NULL);
173 g_array_remove_index (stream->payloads, last);
175 g_array_free (stream->payloads, TRUE);
176 stream->payloads = NULL;
179 if (stream->payloads_rev) {
180 while (stream->payloads_rev->len > 0) {
184 last = stream->payloads_rev->len - 1;
185 payload = &g_array_index (stream->payloads_rev, AsfPayload, last);
186 gst_buffer_replace (&payload->buf, NULL);
187 g_array_remove_index (stream->payloads_rev, last);
189 g_array_free (stream->payloads_rev, TRUE);
190 stream->payloads_rev = NULL;
193 if (stream->ext_props.valid) {
194 g_free (stream->ext_props.payload_extensions);
195 stream->ext_props.payload_extensions = NULL;
200 gst_asf_demux_reset (GstASFDemux * demux, gboolean chain_reset)
202 GST_LOG_OBJECT (demux, "resetting");
204 gst_segment_init (&demux->segment, GST_FORMAT_UNDEFINED);
205 demux->segment_running = FALSE;
206 if (demux->adapter && !chain_reset) {
207 gst_adapter_clear (demux->adapter);
208 g_object_unref (demux->adapter);
209 demux->adapter = NULL;
211 if (demux->taglist) {
212 gst_tag_list_unref (demux->taglist);
213 demux->taglist = NULL;
215 if (demux->metadata) {
216 gst_caps_unref (demux->metadata);
217 demux->metadata = NULL;
219 if (demux->global_metadata) {
220 gst_structure_free (demux->global_metadata);
221 demux->global_metadata = NULL;
223 if (demux->mut_ex_streams) {
224 g_slist_free (demux->mut_ex_streams);
225 demux->mut_ex_streams = NULL;
228 demux->state = GST_ASF_DEMUX_STATE_HEADER;
229 g_free (demux->objpath);
230 demux->objpath = NULL;
231 g_strfreev (demux->languages);
232 demux->languages = NULL;
233 demux->num_languages = 0;
234 g_slist_foreach (demux->ext_stream_props, (GFunc) gst_mini_object_unref,
236 g_slist_free (demux->ext_stream_props);
237 demux->ext_stream_props = NULL;
239 while (demux->old_num_streams > 0) {
240 gst_asf_demux_free_stream (demux,
241 &demux->old_stream[demux->old_num_streams - 1]);
242 --demux->old_num_streams;
244 memset (demux->old_stream, 0, sizeof (demux->old_stream));
245 demux->old_num_streams = 0;
247 /* when resetting for a new chained asf, we don't want to remove the pads
248 * before adding the new ones */
250 memcpy (demux->old_stream, demux->stream, sizeof (demux->stream));
251 demux->old_num_streams = demux->num_streams;
252 demux->num_streams = 0;
255 while (demux->num_streams > 0) {
256 gst_asf_demux_free_stream (demux, &demux->stream[demux->num_streams - 1]);
257 --demux->num_streams;
259 memset (demux->stream, 0, sizeof (demux->stream));
261 /* do not remove those for not adding pads with same name */
262 demux->num_audio_streams = 0;
263 demux->num_video_streams = 0;
264 demux->have_group_id = FALSE;
265 demux->group_id = G_MAXUINT;
267 demux->num_streams = 0;
268 demux->activated_streams = FALSE;
269 demux->first_ts = GST_CLOCK_TIME_NONE;
270 demux->segment_ts = GST_CLOCK_TIME_NONE;
273 gst_segment_init (&demux->in_segment, GST_FORMAT_UNDEFINED);
274 demux->state = GST_ASF_DEMUX_STATE_HEADER;
275 demux->seekable = FALSE;
276 demux->broadcast = FALSE;
277 demux->sidx_interval = 0;
278 demux->sidx_num_entries = 0;
279 g_free (demux->sidx_entries);
280 demux->sidx_entries = NULL;
282 demux->speed_packets = 1;
284 demux->asf_3D_mode = GST_ASF_3D_NONE;
287 GST_LOG_OBJECT (demux, "Restarting");
288 gst_segment_init (&demux->segment, GST_FORMAT_TIME);
289 demux->need_newsegment = TRUE;
290 demux->segment_seqnum = 0;
291 demux->segment_running = FALSE;
292 demux->keyunit_sync = FALSE;
293 demux->accurate = FALSE;
294 demux->metadata = gst_caps_new_empty ();
295 demux->global_metadata = gst_structure_new_empty ("metadata");
296 demux->data_size = 0;
297 demux->data_offset = 0;
298 demux->index_offset = 0;
300 demux->base_offset = 0;
303 g_slist_free (demux->other_streams);
304 demux->other_streams = NULL;
308 gst_asf_demux_init (GstASFDemux * demux)
311 gst_pad_new_from_static_template (&gst_asf_demux_sink_template, "sink");
312 gst_pad_set_chain_function (demux->sinkpad,
313 GST_DEBUG_FUNCPTR (gst_asf_demux_chain));
314 gst_pad_set_event_function (demux->sinkpad,
315 GST_DEBUG_FUNCPTR (gst_asf_demux_sink_event));
316 gst_pad_set_activate_function (demux->sinkpad,
317 GST_DEBUG_FUNCPTR (gst_asf_demux_activate));
318 gst_pad_set_activatemode_function (demux->sinkpad,
319 GST_DEBUG_FUNCPTR (gst_asf_demux_activate_mode));
320 gst_element_add_pad (GST_ELEMENT (demux), demux->sinkpad);
322 /* set initial state */
323 gst_asf_demux_reset (demux, FALSE);
327 gst_asf_demux_activate (GstPad * sinkpad, GstObject * parent)
332 query = gst_query_new_scheduling ();
334 if (!gst_pad_peer_query (sinkpad, query)) {
335 gst_query_unref (query);
339 pull_mode = gst_query_has_scheduling_mode_with_flags (query,
340 GST_PAD_MODE_PULL, GST_SCHEDULING_FLAG_SEEKABLE);
341 gst_query_unref (query);
346 GST_DEBUG_OBJECT (sinkpad, "activating pull");
347 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
351 GST_DEBUG_OBJECT (sinkpad, "activating push");
352 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
357 gst_asf_demux_activate_mode (GstPad * sinkpad, GstObject * parent,
358 GstPadMode mode, gboolean active)
363 demux = GST_ASF_DEMUX (parent);
366 case GST_PAD_MODE_PUSH:
367 demux->state = GST_ASF_DEMUX_STATE_HEADER;
368 demux->streaming = TRUE;
371 case GST_PAD_MODE_PULL:
373 demux->state = GST_ASF_DEMUX_STATE_HEADER;
374 demux->streaming = FALSE;
376 res = gst_pad_start_task (sinkpad, (GstTaskFunction) gst_asf_demux_loop,
379 res = gst_pad_stop_task (sinkpad);
390 gst_asf_demux_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
395 demux = GST_ASF_DEMUX (parent);
397 GST_LOG_OBJECT (demux, "handling %s event", GST_EVENT_TYPE_NAME (event));
398 switch (GST_EVENT_TYPE (event)) {
399 case GST_EVENT_SEGMENT:{
400 const GstSegment *segment;
402 gst_event_parse_segment (event, &segment);
404 if (segment->format == GST_FORMAT_BYTES) {
405 if (demux->packet_size && segment->start > demux->data_offset)
406 demux->packet = (segment->start - demux->data_offset) /
410 } else if (segment->format == GST_FORMAT_TIME) {
411 /* do not know packet position, not really a problem */
414 GST_WARNING_OBJECT (demux, "unsupported newsegment format, ignoring");
415 gst_event_unref (event);
419 /* record upstream segment for interpolation */
420 if (segment->format != demux->in_segment.format)
421 gst_segment_init (&demux->in_segment, GST_FORMAT_UNDEFINED);
422 gst_segment_copy_into (segment, &demux->in_segment);
424 /* in either case, clear some state and generate newsegment later on */
425 GST_OBJECT_LOCK (demux);
426 demux->segment_ts = GST_CLOCK_TIME_NONE;
427 demux->in_gap = GST_CLOCK_TIME_NONE;
428 demux->need_newsegment = TRUE;
429 demux->segment_seqnum = gst_event_get_seqnum (event);
430 gst_asf_demux_reset_stream_state_after_discont (demux);
431 /* if we seek back after reaching EOS, go back to packet reading state */
432 if (demux->data_offset > 0 && segment->start >= demux->data_offset
433 && demux->state == GST_ASF_DEMUX_STATE_INDEX) {
434 demux->state = GST_ASF_DEMUX_STATE_DATA;
436 GST_OBJECT_UNLOCK (demux);
438 gst_event_unref (event);
444 if (demux->state == GST_ASF_DEMUX_STATE_HEADER) {
445 GST_ELEMENT_ERROR (demux, STREAM, DEMUX,
446 (_("This stream contains no data.")),
447 ("got eos and didn't receive a complete header object"));
450 flow = gst_asf_demux_push_complete_payloads (demux, TRUE);
451 if (!demux->activated_streams) {
452 /* If we still haven't got activated streams, the file is most likely corrupt */
453 GST_ELEMENT_ERROR (demux, STREAM, WRONG_TYPE,
454 (_("This stream contains no data.")),
455 ("got eos and didn't receive a complete header object"));
458 if (flow < GST_FLOW_EOS || flow == GST_FLOW_NOT_LINKED) {
459 GST_ELEMENT_FLOW_ERROR (demux, flow);
463 GST_OBJECT_LOCK (demux);
464 gst_adapter_clear (demux->adapter);
465 GST_OBJECT_UNLOCK (demux);
466 gst_asf_demux_send_event_unlocked (demux, event);
470 case GST_EVENT_FLUSH_STOP:
471 GST_OBJECT_LOCK (demux);
472 gst_asf_demux_reset_stream_state_after_discont (demux);
473 GST_OBJECT_UNLOCK (demux);
474 gst_asf_demux_send_event_unlocked (demux, event);
475 /* upon activation, latency is no longer introduced, e.g. after seek */
476 if (demux->activated_streams)
481 ret = gst_pad_event_default (pad, parent, event);
489 gst_asf_demux_seek_index_lookup (GstASFDemux * demux, guint * packet,
490 GstClockTime seek_time, GstClockTime * p_idx_time, guint * speed,
491 gboolean next, gboolean * eos)
493 GstClockTime idx_time;
499 if (G_UNLIKELY (demux->sidx_num_entries == 0 || demux->sidx_interval == 0))
502 idx = (guint) ((seek_time + demux->preroll) / demux->sidx_interval);
505 /* if we want the next keyframe, we have to go forward till we find
506 a different packet number */
508 if (idx >= demux->sidx_num_entries - 1) {
509 /* If we get here, we're asking for next keyframe after the last one. There isn't one. */
514 for (idx2 = idx + 1; idx2 < demux->sidx_num_entries; ++idx2) {
515 if (demux->sidx_entries[idx].packet != demux->sidx_entries[idx2].packet) {
522 if (G_UNLIKELY (idx >= demux->sidx_num_entries)) {
528 *packet = demux->sidx_entries[idx].packet;
530 *speed = demux->sidx_entries[idx].count;
532 /* so we get closer to the actual time of the packet ... actually, let's not
533 * do this, since we throw away superfluous payloads before the seek position
534 * anyway; this way, our key unit seek 'snap resolution' is a bit better
535 * (ie. same as index resolution) */
537 while (idx > 0 && demux->sidx_entries[idx-1] == demux->sidx_entries[idx])
541 idx_time = demux->sidx_interval * idx;
542 if (G_LIKELY (idx_time >= demux->preroll))
543 idx_time -= demux->preroll;
545 GST_DEBUG_OBJECT (demux, "%" GST_TIME_FORMAT " => packet %u at %"
546 GST_TIME_FORMAT, GST_TIME_ARGS (seek_time), *packet,
547 GST_TIME_ARGS (idx_time));
549 if (G_LIKELY (p_idx_time))
550 *p_idx_time = idx_time;
556 gst_asf_demux_reset_stream_state_after_discont (GstASFDemux * demux)
560 gst_adapter_clear (demux->adapter);
562 GST_DEBUG_OBJECT (demux, "reset stream state");
564 gst_flow_combiner_reset (demux->flowcombiner);
565 for (n = 0; n < demux->num_streams; n++) {
566 demux->stream[n].discont = TRUE;
567 demux->stream[n].first_buffer = TRUE;
569 while (demux->stream[n].payloads->len > 0) {
573 last = demux->stream[n].payloads->len - 1;
574 payload = &g_array_index (demux->stream[n].payloads, AsfPayload, last);
575 gst_buffer_replace (&payload->buf, NULL);
576 g_array_remove_index (demux->stream[n].payloads, last);
582 gst_asf_demux_mark_discont (GstASFDemux * demux)
586 GST_DEBUG_OBJECT (demux, "Mark stream discont");
588 for (n = 0; n < demux->num_streams; n++)
589 demux->stream[n].discont = TRUE;
592 /* do a seek in push based mode */
594 gst_asf_demux_handle_seek_push (GstASFDemux * demux, GstEvent * event)
599 GstSeekType cur_type, stop_type;
603 GstEvent *byte_event;
605 gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur,
608 stop_type = GST_SEEK_TYPE_NONE;
611 GST_DEBUG_OBJECT (demux, "seeking to %" GST_TIME_FORMAT, GST_TIME_ARGS (cur));
613 /* determine packet, by index or by estimation */
614 if (!gst_asf_demux_seek_index_lookup (demux, &packet, cur, NULL, NULL, FALSE,
617 (guint) gst_util_uint64_scale (demux->num_packets, cur,
621 if (packet > demux->num_packets) {
622 GST_DEBUG_OBJECT (demux, "could not determine packet to seek to, "
627 GST_DEBUG_OBJECT (demux, "seeking to packet %d", packet);
629 cur = demux->data_offset + ((guint64) packet * demux->packet_size);
631 GST_DEBUG_OBJECT (demux, "Pushing BYTE seek rate %g, "
632 "start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, rate, cur, stop);
633 /* BYTE seek event */
634 byte_event = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, cur_type,
635 cur, stop_type, stop);
636 gst_event_set_seqnum (byte_event, gst_event_get_seqnum (event));
637 res = gst_pad_push_event (demux->sinkpad, byte_event);
643 gst_asf_demux_handle_seek_event (GstASFDemux * demux, GstEvent * event)
645 GstClockTime idx_time;
648 GstSeekType cur_type, stop_type;
650 gboolean only_need_update;
651 gboolean after, before, next;
656 guint packet, speed_count = 1;
662 gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur,
665 if (G_UNLIKELY (format != GST_FORMAT_TIME)) {
666 GST_LOG_OBJECT (demux, "seeking is only supported in TIME format");
670 /* upstream might handle TIME seek, e.g. mms or rtsp, or not, e.g. http,
671 * so first try to let it handle the seek event. */
672 if (gst_pad_push_event (demux->sinkpad, gst_event_ref (event)))
675 if (G_UNLIKELY (demux->seekable == FALSE || demux->packet_size == 0 ||
676 demux->num_packets == 0 || demux->play_time == 0)) {
677 GST_LOG_OBJECT (demux, "stream is not seekable");
681 if (G_UNLIKELY (!demux->activated_streams)) {
682 GST_LOG_OBJECT (demux, "streams not yet activated, ignoring seek");
686 if (G_UNLIKELY (rate <= 0.0)) {
687 GST_LOG_OBJECT (demux, "backward playback");
688 demux->seek_to_cur_pos = TRUE;
689 for (i = 0; i < demux->num_streams; i++) {
690 demux->stream[i].reverse_kf_ready = FALSE;
694 seqnum = gst_event_get_seqnum (event);
695 flush = ((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
697 ((flags & GST_SEEK_FLAG_ACCURATE) == GST_SEEK_FLAG_ACCURATE);
698 demux->keyunit_sync =
699 ((flags & GST_SEEK_FLAG_KEY_UNIT) == GST_SEEK_FLAG_KEY_UNIT);
700 after = ((flags & GST_SEEK_FLAG_SNAP_AFTER) == GST_SEEK_FLAG_SNAP_AFTER);
701 before = ((flags & GST_SEEK_FLAG_SNAP_BEFORE) == GST_SEEK_FLAG_SNAP_BEFORE);
702 next = after && !before;
704 if (G_UNLIKELY (demux->streaming)) {
705 /* support it safely needs more segment handling, e.g. closing etc */
707 GST_LOG_OBJECT (demux, "streaming; non-flushing seek not supported");
710 /* we can (re)construct the start later on, but not the end */
711 if (stop_type != GST_SEEK_TYPE_NONE &&
712 (stop_type != GST_SEEK_TYPE_SET || GST_CLOCK_TIME_IS_VALID (stop))) {
713 GST_LOG_OBJECT (demux, "streaming; end position must be NONE");
716 return gst_asf_demux_handle_seek_push (demux, event);
719 /* unlock the streaming thread */
720 if (G_LIKELY (flush)) {
721 fevent = gst_event_new_flush_start ();
723 gst_event_set_seqnum (fevent, seqnum);
724 gst_pad_push_event (demux->sinkpad, gst_event_ref (fevent));
725 gst_asf_demux_send_event_unlocked (demux, fevent);
727 gst_pad_pause_task (demux->sinkpad);
730 /* grab the stream lock so that streaming cannot continue, for
731 * non flushing seeks when the element is in PAUSED this could block
733 GST_PAD_STREAM_LOCK (demux->sinkpad);
735 /* we now can stop flushing, since we have the stream lock now */
736 fevent = gst_event_new_flush_stop (TRUE);
737 gst_event_set_seqnum (fevent, seqnum);
738 gst_pad_push_event (demux->sinkpad, gst_event_ref (fevent));
740 if (G_LIKELY (flush))
741 gst_asf_demux_send_event_unlocked (demux, fevent);
743 gst_event_unref (fevent);
745 /* operating on copy of segment until we know the seek worked */
746 segment = demux->segment;
748 if (G_UNLIKELY (demux->segment_running && !flush)) {
749 GstSegment newsegment;
752 /* create the segment event to close the current segment */
753 gst_segment_copy_into (&segment, &newsegment);
754 newseg = gst_event_new_segment (&newsegment);
755 gst_event_set_seqnum (newseg, seqnum);
757 gst_asf_demux_send_event_unlocked (demux, newseg);
760 gst_segment_do_seek (&segment, rate, format, flags, cur_type,
761 cur, stop_type, stop, &only_need_update);
763 GST_DEBUG_OBJECT (demux, "seeking to time %" GST_TIME_FORMAT ", segment: "
764 "%" GST_SEGMENT_FORMAT, GST_TIME_ARGS (segment.start), &segment);
766 if (cur_type != GST_SEEK_TYPE_SET)
767 seek_time = segment.start;
771 /* FIXME: should check the KEY_UNIT flag; need to adjust position to
772 * real start of data and segment_start to indexed time for key unit seek*/
773 if (G_UNLIKELY (!gst_asf_demux_seek_index_lookup (demux, &packet, seek_time,
774 &idx_time, &speed_count, next, &eos))) {
778 demux->packet = demux->num_packets;
782 /* First try to query our source to see if it can convert for us. This is
783 the case when our source is an mms stream, notice that in this case
784 gstmms will do a time based seek to get the byte offset, this is not a
785 problem as the seek to this offset needs to happen anway. */
786 if (gst_pad_peer_query_convert (demux->sinkpad, GST_FORMAT_TIME, seek_time,
787 GST_FORMAT_BYTES, &offset)) {
788 packet = (offset - demux->data_offset) / demux->packet_size;
789 GST_LOG_OBJECT (demux, "convert %" GST_TIME_FORMAT
790 " to bytes query result: %" G_GINT64_FORMAT ", data_ofset: %"
791 G_GINT64_FORMAT ", packet_size: %u," " resulting packet: %u\n",
792 GST_TIME_ARGS (seek_time), offset, demux->data_offset,
793 demux->packet_size, packet);
795 /* FIXME: For streams containing video, seek to an earlier position in
796 * the hope of hitting a keyframe and let the sinks throw away the stuff
797 * before the segment start. For audio-only this is unnecessary as every
799 if (flush && (demux->accurate || (demux->keyunit_sync && !next))
800 && demux->num_video_streams > 0) {
801 seek_time -= 5 * GST_SECOND;
806 packet = (guint) gst_util_uint64_scale (demux->num_packets,
807 seek_time, demux->play_time);
809 if (packet > demux->num_packets)
810 packet = demux->num_packets;
813 if (G_LIKELY (demux->keyunit_sync && !demux->accurate)) {
814 GST_DEBUG_OBJECT (demux, "key unit seek, adjust seek_time = %"
815 GST_TIME_FORMAT " to index_time = %" GST_TIME_FORMAT,
816 GST_TIME_ARGS (seek_time), GST_TIME_ARGS (idx_time));
817 segment.start = idx_time;
818 segment.position = idx_time;
819 segment.time = idx_time;
823 GST_DEBUG_OBJECT (demux, "seeking to packet %u (%d)", packet, speed_count);
825 GST_OBJECT_LOCK (demux);
826 demux->segment = segment;
827 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)) {
828 demux->packet = (gint64) gst_util_uint64_scale (demux->num_packets,
829 stop, demux->play_time);
831 demux->packet = packet;
834 demux->need_newsegment = TRUE;
835 demux->segment_seqnum = seqnum;
836 demux->speed_packets =
837 GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment) ? 1 : speed_count;
838 gst_asf_demux_reset_stream_state_after_discont (demux);
839 GST_OBJECT_UNLOCK (demux);
842 /* restart our task since it might have been stopped when we did the flush */
843 gst_pad_start_task (demux->sinkpad, (GstTaskFunction) gst_asf_demux_loop,
846 /* streaming can continue now */
847 GST_PAD_STREAM_UNLOCK (demux->sinkpad);
853 gst_asf_demux_handle_src_event (GstPad * pad, GstObject * parent,
859 demux = GST_ASF_DEMUX (parent);
861 switch (GST_EVENT_TYPE (event)) {
863 GST_LOG_OBJECT (pad, "seek event");
864 ret = gst_asf_demux_handle_seek_event (demux, event);
865 gst_event_unref (event);
868 case GST_EVENT_NAVIGATION:
869 /* just drop these two silently */
870 gst_event_unref (event);
874 GST_LOG_OBJECT (pad, "%s event", GST_EVENT_TYPE_NAME (event));
875 ret = gst_pad_event_default (pad, parent, event);
882 static inline guint32
883 gst_asf_demux_identify_guid (const ASFGuidHash * guids, ASFGuid * guid)
887 ret = gst_asf_identify_guid (guids, guid);
889 GST_LOG ("%s 0x%08x-0x%08x-0x%08x-0x%08x",
890 gst_asf_get_guid_nick (guids, ret),
891 guid->v1, guid->v2, guid->v3, guid->v4);
903 /* Peek for an object.
905 * Returns FALSE is the object is corrupted (such as the reported
906 * object size being greater than 2**32bits.
909 asf_demux_peek_object (GstASFDemux * demux, const guint8 * data,
910 guint data_len, AsfObject * object, gboolean expect)
915 /* Callers should have made sure that data_len is big enough */
916 g_assert (data_len >= ASF_OBJECT_HEADER_SIZE);
918 if (data_len < ASF_OBJECT_HEADER_SIZE)
921 guid.v1 = GST_READ_UINT32_LE (data + 0);
922 guid.v2 = GST_READ_UINT32_LE (data + 4);
923 guid.v3 = GST_READ_UINT32_LE (data + 8);
924 guid.v4 = GST_READ_UINT32_LE (data + 12);
926 tmp_size = GST_READ_UINT64_LE (data + 16);
927 if (tmp_size >= G_MAXUINT) {
928 GST_WARNING_OBJECT (demux,
929 "ASF Object size corrupted (greater than 32bit)");
932 object->size = tmp_size;
934 /* FIXME: make asf_demux_identify_object_guid() */
935 object->id = gst_asf_demux_identify_guid (asf_object_guids, &guid);
936 if (object->id == ASF_OBJ_UNDEFINED && expect) {
937 GST_WARNING_OBJECT (demux, "Unknown object %08x-%08x-%08x-%08x",
938 guid.v1, guid.v2, guid.v3, guid.v4);
945 gst_asf_demux_release_old_pads (GstASFDemux * demux)
947 GST_DEBUG_OBJECT (demux, "Releasing old pads");
949 while (demux->old_num_streams > 0) {
950 gst_pad_push_event (demux->old_stream[demux->old_num_streams - 1].pad,
951 gst_event_new_eos ());
952 gst_asf_demux_free_stream (demux,
953 &demux->old_stream[demux->old_num_streams - 1]);
954 --demux->old_num_streams;
956 memset (demux->old_stream, 0, sizeof (demux->old_stream));
957 demux->old_num_streams = 0;
961 gst_asf_demux_chain_headers (GstASFDemux * demux)
964 guint8 *header_data, *data = NULL;
965 const guint8 *cdata = NULL;
967 GstFlowReturn flow = GST_FLOW_OK;
969 cdata = (guint8 *) gst_adapter_map (demux->adapter, ASF_OBJECT_HEADER_SIZE);
973 if (!asf_demux_peek_object (demux, cdata, ASF_OBJECT_HEADER_SIZE, &obj, TRUE))
975 if (obj.id != ASF_OBJ_HEADER)
978 GST_LOG_OBJECT (demux, "header size = %u", (guint) obj.size);
980 /* + 50 for non-packet data at beginning of ASF_OBJ_DATA */
981 if (gst_adapter_available (demux->adapter) < obj.size + 50)
984 data = gst_adapter_take (demux->adapter, obj.size + 50);
987 header_size = obj.size;
988 flow = gst_asf_demux_process_object (demux, &header_data, &header_size);
989 if (flow != GST_FLOW_OK)
992 /* calculate where the packet data starts */
993 demux->data_offset = obj.size + 50;
995 /* now parse the beginning of the ASF_OBJ_DATA object */
996 if (!gst_asf_demux_parse_data_object_start (demux, data + obj.size))
999 if (demux->num_streams == 0)
1008 GST_LOG_OBJECT (demux, "not enough data in adapter yet");
1015 GST_ELEMENT_ERROR (demux, STREAM, WRONG_TYPE, (NULL),
1016 ("This doesn't seem to be an ASF file"));
1018 return GST_FLOW_ERROR;
1023 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
1024 ("header parsing failed, or no streams found, flow = %s",
1025 gst_flow_get_name (flow)));
1027 return GST_FLOW_ERROR;
1032 gst_asf_demux_pull_data (GstASFDemux * demux, guint64 offset, guint size,
1033 GstBuffer ** p_buf, GstFlowReturn * p_flow)
1038 GST_LOG_OBJECT (demux, "pulling buffer at %" G_GUINT64_FORMAT "+%u",
1041 flow = gst_pad_pull_range (demux->sinkpad, offset, size, p_buf);
1043 if (G_LIKELY (p_flow))
1046 if (G_UNLIKELY (flow != GST_FLOW_OK)) {
1047 GST_DEBUG_OBJECT (demux, "flow %s pulling buffer at %" G_GUINT64_FORMAT
1048 "+%u", gst_flow_get_name (flow), offset, size);
1053 g_assert (*p_buf != NULL);
1055 buffer_size = gst_buffer_get_size (*p_buf);
1056 if (G_UNLIKELY (buffer_size < size)) {
1057 GST_DEBUG_OBJECT (demux, "short read pulling buffer at %" G_GUINT64_FORMAT
1058 "+%u (got only %" G_GSIZE_FORMAT " bytes)", offset, size, buffer_size);
1059 gst_buffer_unref (*p_buf);
1060 if (G_LIKELY (p_flow))
1061 *p_flow = GST_FLOW_EOS;
1069 static GstFlowReturn
1070 gst_asf_demux_pull_indices (GstASFDemux * demux)
1072 GstBuffer *buf = NULL;
1075 GstFlowReturn ret = GST_FLOW_OK;
1077 offset = demux->index_offset;
1079 if (G_UNLIKELY (offset == 0)) {
1080 GST_DEBUG_OBJECT (demux, "can't read indices, don't know index offset");
1085 while (gst_asf_demux_pull_data (demux, offset, 16 + 8, &buf, NULL)) {
1091 gst_buffer_map (buf, &map, GST_MAP_READ);
1092 g_assert (map.size >= 16 + 8);
1093 if (!asf_demux_peek_object (demux, map.data, 16 + 8, &obj, TRUE)) {
1094 gst_buffer_unmap (buf, &map);
1095 gst_buffer_replace (&buf, NULL);
1096 ret = GST_FLOW_ERROR;
1099 gst_buffer_unmap (buf, &map);
1100 gst_buffer_replace (&buf, NULL);
1102 /* check for sanity */
1103 if (G_UNLIKELY (obj.size > (5 * 1024 * 1024))) {
1104 GST_DEBUG_OBJECT (demux, "implausible index object size, bailing out");
1108 if (G_UNLIKELY (!gst_asf_demux_pull_data (demux, offset, obj.size, &buf,
1112 GST_LOG_OBJECT (demux, "index object at offset 0x%" G_GINT64_MODIFIER "X"
1113 ", size %u", offset, (guint) obj.size);
1115 offset += obj.size; /* increase before _process_object changes it */
1117 gst_buffer_map (buf, &map, GST_MAP_READ);
1118 g_assert (map.size >= obj.size);
1119 bufdata = (guint8 *) map.data;
1120 obj_size = obj.size;
1121 ret = gst_asf_demux_process_object (demux, &bufdata, &obj_size);
1122 gst_buffer_unmap (buf, &map);
1123 gst_buffer_replace (&buf, NULL);
1125 if (G_UNLIKELY (ret != GST_FLOW_OK))
1131 GST_DEBUG_OBJECT (demux, "read %u index objects", num_read);
1136 gst_asf_demux_parse_data_object_start (GstASFDemux * demux, guint8 * data)
1140 if (!asf_demux_peek_object (demux, data, 50, &obj, TRUE)) {
1141 GST_WARNING_OBJECT (demux, "Corrupted data");
1144 if (obj.id != ASF_OBJ_DATA) {
1145 GST_WARNING_OBJECT (demux, "headers not followed by a DATA object");
1149 demux->state = GST_ASF_DEMUX_STATE_DATA;
1151 if (!demux->broadcast && obj.size > 50) {
1152 demux->data_size = obj.size - 50;
1153 /* CHECKME: for at least one file this is off by +158 bytes?! */
1154 demux->index_offset = demux->data_offset + demux->data_size;
1156 demux->data_size = 0;
1157 demux->index_offset = 0;
1162 if (!demux->broadcast) {
1163 /* skip object header (24 bytes) and file GUID (16 bytes) */
1164 demux->num_packets = GST_READ_UINT64_LE (data + (16 + 8) + 16);
1166 demux->num_packets = 0;
1169 if (demux->num_packets == 0)
1170 demux->seekable = FALSE;
1172 /* fallback in the unlikely case that headers are inconsistent, can't hurt */
1173 if (demux->data_size == 0 && demux->num_packets > 0) {
1174 demux->data_size = demux->num_packets * demux->packet_size;
1175 demux->index_offset = demux->data_offset + demux->data_size;
1178 /* process pending stream objects and create pads for those */
1179 gst_asf_demux_process_queued_extended_stream_objects (demux);
1181 GST_INFO_OBJECT (demux, "Stream has %" G_GUINT64_FORMAT " packets, "
1182 "data_offset=%" G_GINT64_FORMAT ", data_size=%" G_GINT64_FORMAT
1183 ", index_offset=%" G_GUINT64_FORMAT, demux->num_packets,
1184 demux->data_offset, demux->data_size, demux->index_offset);
1190 gst_asf_demux_pull_headers (GstASFDemux * demux, GstFlowReturn * pflow)
1192 GstFlowReturn flow = GST_FLOW_OK;
1194 GstBuffer *buf = NULL;
1199 GST_LOG_OBJECT (demux, "reading headers");
1201 /* pull HEADER object header, so we know its size */
1202 if (!gst_asf_demux_pull_data (demux, demux->base_offset, 16 + 8, &buf, &flow))
1205 gst_buffer_map (buf, &map, GST_MAP_READ);
1206 g_assert (map.size >= 16 + 8);
1207 if (!asf_demux_peek_object (demux, map.data, 16 + 8, &obj, TRUE)) {
1208 gst_buffer_unmap (buf, &map);
1209 gst_buffer_replace (&buf, NULL);
1210 flow = GST_FLOW_ERROR;
1213 gst_buffer_unmap (buf, &map);
1214 gst_buffer_replace (&buf, NULL);
1216 if (obj.id != ASF_OBJ_HEADER)
1219 GST_LOG_OBJECT (demux, "header size = %u", obj.size);
1221 /* pull HEADER object */
1222 if (!gst_asf_demux_pull_data (demux, demux->base_offset, obj.size, &buf,
1226 size = obj.size; /* don't want obj.size changed */
1227 gst_buffer_map (buf, &map, GST_MAP_READ);
1228 g_assert (map.size >= size);
1229 bufdata = (guint8 *) map.data;
1230 flow = gst_asf_demux_process_object (demux, &bufdata, &size);
1231 gst_buffer_unmap (buf, &map);
1232 gst_buffer_replace (&buf, NULL);
1234 if (flow != GST_FLOW_OK) {
1235 GST_WARNING_OBJECT (demux, "process_object: %s", gst_flow_get_name (flow));
1239 /* calculate where the packet data starts */
1240 demux->data_offset = demux->base_offset + obj.size + 50;
1242 /* now pull beginning of DATA object before packet data */
1243 if (!gst_asf_demux_pull_data (demux, demux->base_offset + obj.size, 50, &buf,
1247 gst_buffer_map (buf, &map, GST_MAP_READ);
1248 g_assert (map.size >= size);
1249 bufdata = (guint8 *) map.data;
1250 if (!gst_asf_demux_parse_data_object_start (demux, bufdata))
1253 if (demux->num_streams == 0)
1256 gst_buffer_unmap (buf, &map);
1257 gst_buffer_replace (&buf, NULL);
1265 gst_buffer_unmap (buf, &map);
1266 gst_buffer_replace (&buf, NULL);
1268 GST_ELEMENT_ERROR (demux, STREAM, WRONG_TYPE, (NULL),
1269 ("This doesn't seem to be an ASF file"));
1270 *pflow = GST_FLOW_ERROR;
1275 flow = GST_FLOW_ERROR;
1276 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
1277 ("header parsing failed, or no streams found, flow = %s",
1278 gst_flow_get_name (flow)));
1283 gst_buffer_unmap (buf, &map);
1284 gst_buffer_replace (&buf, NULL);
1285 if (flow == ASF_FLOW_NEED_MORE_DATA)
1286 flow = GST_FLOW_ERROR;
1293 all_streams_prerolled (GstASFDemux * demux)
1295 GstClockTime preroll_time;
1296 guint i, num_no_data = 0;
1298 /* Allow at least 500ms of preroll_time */
1299 preroll_time = MAX (demux->preroll, 500 * GST_MSECOND);
1301 /* returns TRUE as long as there isn't a stream which (a) has data queued
1302 * and (b) the timestamp of last piece of data queued is < demux->preroll
1303 * AND there is at least one other stream with data queued */
1304 for (i = 0; i < demux->num_streams; ++i) {
1305 AsfPayload *last_payload = NULL;
1309 stream = &demux->stream[i];
1310 if (G_UNLIKELY (stream->payloads->len == 0)) {
1312 GST_LOG_OBJECT (stream->pad, "no data queued");
1316 /* find last payload with timestamp */
1317 for (last_idx = stream->payloads->len - 1;
1318 last_idx >= 0 && (last_payload == NULL
1319 || !GST_CLOCK_TIME_IS_VALID (last_payload->ts)); --last_idx) {
1320 last_payload = &g_array_index (stream->payloads, AsfPayload, last_idx);
1323 GST_LOG_OBJECT (stream->pad, "checking if %" GST_TIME_FORMAT " > %"
1324 GST_TIME_FORMAT, GST_TIME_ARGS (last_payload->ts),
1325 GST_TIME_ARGS (preroll_time));
1326 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (last_payload->ts)
1327 || last_payload->ts <= preroll_time)) {
1328 GST_LOG_OBJECT (stream->pad, "not beyond preroll point yet");
1333 if (G_UNLIKELY (num_no_data > 0))
1341 gst_asf_demux_have_mutually_exclusive_active_stream (GstASFDemux * demux,
1346 for (l = demux->mut_ex_streams; l != NULL; l = l->next) {
1349 /* check for each mutual exclusion group whether it affects this stream */
1350 for (mes = (guint8 *) l->data; mes != NULL && *mes != 0xff; ++mes) {
1351 if (*mes == stream->id) {
1352 /* we are in this group; let's check if we've already activated streams
1353 * that are in the same group (and hence mutually exclusive to this
1355 for (mes = (guint8 *) l->data; mes != NULL && *mes != 0xff; ++mes) {
1358 for (i = 0; i < demux->num_streams; ++i) {
1359 if (demux->stream[i].id == *mes && demux->stream[i].active) {
1360 GST_LOG_OBJECT (demux, "stream with ID %d is mutually exclusive "
1361 "to already active stream with ID %d", stream->id,
1362 demux->stream[i].id);
1367 /* we can only be in this group once, let's break out and move on to
1368 * the next mutual exclusion group */
1379 gst_asf_demux_check_segment_ts (GstASFDemux * demux, GstClockTime payload_ts)
1381 /* remember the first queued timestamp for the segment */
1382 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (demux->segment_ts) &&
1383 GST_CLOCK_TIME_IS_VALID (demux->first_ts))) {
1384 GST_DEBUG_OBJECT (demux, "segment ts: %" GST_TIME_FORMAT,
1385 GST_TIME_ARGS (demux->first_ts));
1386 demux->segment_ts = payload_ts;
1387 /* always note, but only determines segment when streaming */
1388 if (demux->streaming)
1389 gst_segment_do_seek (&demux->segment, demux->in_segment.rate,
1390 GST_FORMAT_TIME, (GstSeekFlags) demux->segment.flags,
1391 GST_SEEK_TYPE_SET, demux->segment_ts, GST_SEEK_TYPE_NONE, 0, NULL);
1396 gst_asf_demux_check_first_ts (GstASFDemux * demux, gboolean force)
1398 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (demux->first_ts))) {
1399 GstClockTime first_ts = GST_CLOCK_TIME_NONE;
1402 /* go trhough each stream, find smallest timestamp */
1403 for (i = 0; i < demux->num_streams; ++i) {
1406 GstClockTime stream_min_ts = GST_CLOCK_TIME_NONE;
1407 GstClockTime stream_min_ts2 = GST_CLOCK_TIME_NONE; /* second smallest timestamp */
1408 stream = &demux->stream[i];
1410 for (j = 0; j < stream->payloads->len; ++j) {
1411 AsfPayload *payload = &g_array_index (stream->payloads, AsfPayload, j);
1412 if (GST_CLOCK_TIME_IS_VALID (payload->ts) &&
1413 (!GST_CLOCK_TIME_IS_VALID (stream_min_ts)
1414 || stream_min_ts > payload->ts)) {
1415 stream_min_ts = payload->ts;
1417 if (GST_CLOCK_TIME_IS_VALID (payload->ts) &&
1418 payload->ts > stream_min_ts &&
1419 (!GST_CLOCK_TIME_IS_VALID (stream_min_ts2)
1420 || stream_min_ts2 > payload->ts)) {
1421 stream_min_ts2 = payload->ts;
1425 /* there are some DVR ms files where first packet has TS of 0 (instead of -1) while subsequent packets have
1426 regular (singificantly larger) timestamps. If we don't deal with it, we may end up with huge gap in timestamps
1427 which makes playback stuck. The 0 timestamp may also be valid though, if the second packet timestamp continues
1428 from it. I havent found a better way to distinguish between these two, except to set an arbitrary boundary
1429 and disregard the first 0 timestamp if the second timestamp is bigger than the boundary) */
1431 if (stream_min_ts == 0 && stream_min_ts2 == GST_CLOCK_TIME_NONE && !force) /* still waiting for the second timestamp */
1434 if (stream_min_ts == 0 && stream_min_ts2 > GST_SECOND) /* first timestamp is 0 and second is significantly larger, disregard the 0 */
1435 stream_min_ts = stream_min_ts2;
1437 /* if we don't have timestamp for this stream, wait for more data */
1438 if (!GST_CLOCK_TIME_IS_VALID (stream_min_ts) && !force)
1441 if (GST_CLOCK_TIME_IS_VALID (stream_min_ts) &&
1442 (!GST_CLOCK_TIME_IS_VALID (first_ts) || first_ts > stream_min_ts))
1443 first_ts = stream_min_ts;
1446 if (!GST_CLOCK_TIME_IS_VALID (first_ts)) /* can happen with force = TRUE */
1449 demux->first_ts = first_ts;
1451 /* update packets queued before we knew first timestamp */
1452 for (i = 0; i < demux->num_streams; ++i) {
1455 stream = &demux->stream[i];
1457 for (j = 0; j < stream->payloads->len; ++j) {
1458 AsfPayload *payload = &g_array_index (stream->payloads, AsfPayload, j);
1459 if (GST_CLOCK_TIME_IS_VALID (payload->ts)) {
1460 if (payload->ts > first_ts)
1461 payload->ts -= first_ts;
1469 gst_asf_demux_check_segment_ts (demux, 0);
1475 gst_asf_demux_update_caps_from_payload (GstASFDemux * demux, AsfStream * stream)
1477 /* try to determine whether the stream is AC-3 or MPEG; In dvr-ms the codecTag is unreliable
1478 and often set wrong, inspecting the data is the only way that seem to be working */
1479 GstTypeFindProbability prob = GST_TYPE_FIND_NONE;
1480 GstCaps *caps = NULL;
1482 GstAdapter *adapter = gst_adapter_new ();
1484 for (i = 0; i < stream->payloads->len && prob < GST_TYPE_FIND_LIKELY; ++i) {
1486 AsfPayload *payload;
1489 payload = &g_array_index (stream->payloads, AsfPayload, i);
1490 gst_adapter_push (adapter, gst_buffer_ref (payload->buf));
1491 len = gst_adapter_available (adapter);
1492 data = gst_adapter_map (adapter, len);
1496 #define MIN_LENGTH 128
1498 /* look for the sync points */
1500 if (len < MIN_LENGTH || /* give typefind something to work on */
1501 (data[0] == 0x0b && data[1] == 0x77) || /* AC-3 sync point */
1502 (data[0] == 0xFF && ((data[1] & 0xF0) >> 4) == 0xF)) /* MPEG sync point */
1508 gst_caps_take (&caps, gst_type_find_helper_for_data (GST_OBJECT (demux),
1511 if (prob < GST_TYPE_FIND_LIKELY) {
1514 if (len > MIN_LENGTH)
1515 /* this wasn't it, look for another sync point */
1519 gst_adapter_unmap (adapter);
1522 gst_object_unref (adapter);
1525 gst_caps_take (&stream->caps, caps);
1533 gst_asf_demux_check_activate_streams (GstASFDemux * demux, gboolean force)
1535 guint i, actual_streams = 0;
1537 if (demux->activated_streams)
1540 if (G_UNLIKELY (!gst_asf_demux_check_first_ts (demux, force)))
1543 if (!all_streams_prerolled (demux) && !force) {
1544 GST_DEBUG_OBJECT (demux, "not all streams with data beyond preroll yet");
1548 for (i = 0; i < demux->num_streams; ++i) {
1549 AsfStream *stream = &demux->stream[i];
1551 if (stream->payloads->len > 0) {
1553 if (stream->inspect_payload && /* dvr-ms required payload inspection */
1554 !stream->active && /* do not inspect active streams (caps were already set) */
1555 !gst_asf_demux_update_caps_from_payload (demux, stream) && /* failed to determine caps */
1556 stream->payloads->len < 20) { /* if we couldn't determine the caps from 20 packets then just give up and use whatever was in codecTag */
1557 /* try to gather some more data */
1560 /* we don't check mutual exclusion stuff here; either we have data for
1561 * a stream, then we active it, or we don't, then we'll ignore it */
1562 GST_LOG_OBJECT (stream->pad, "is prerolled - activate!");
1563 gst_asf_demux_activate_stream (demux, stream);
1564 actual_streams += 1;
1566 GST_LOG_OBJECT (stream->pad, "no data, ignoring stream");
1570 if (actual_streams == 0) {
1571 /* We don't have any streams activated ! */
1572 GST_ERROR_OBJECT (demux, "No streams activated!");
1576 gst_asf_demux_release_old_pads (demux);
1578 demux->activated_streams = TRUE;
1579 GST_LOG_OBJECT (demux, "signalling no more pads");
1580 gst_element_no_more_pads (GST_ELEMENT (demux));
1584 /* returns the stream that has a complete payload with the lowest timestamp
1585 * queued, or NULL (we push things by timestamp because during the internal
1586 * prerolling we might accumulate more data then the external queues can take,
1587 * so we'd lock up if we pushed all accumulated data for stream N in one go) */
1589 gst_asf_demux_find_stream_with_complete_payload (GstASFDemux * demux)
1591 AsfPayload *best_payload = NULL;
1592 AsfStream *best_stream = NULL;
1595 for (i = 0; i < demux->num_streams; ++i) {
1599 stream = &demux->stream[i];
1601 /* Don't push any data until we have at least one payload that falls within
1602 * the current segment. This way we can remove out-of-segment payloads that
1603 * don't need to be decoded after a seek, sending only data from the
1604 * keyframe directly before our segment start */
1605 if (stream->payloads->len > 0) {
1606 AsfPayload *payload = NULL;
1609 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)) {
1610 /* Reverse playback */
1612 if (stream->is_video) {
1613 /* We have to push payloads from KF to the first frame we accumulated (reverse order) */
1614 if (stream->reverse_kf_ready) {
1616 &g_array_index (stream->payloads, AsfPayload, stream->kf_pos);
1617 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (payload->ts))) {
1618 /* TODO : remove payload from the list? */
1625 /* find first complete payload with timestamp */
1626 for (j = stream->payloads->len - 1;
1627 j >= 0 && (payload == NULL
1628 || !GST_CLOCK_TIME_IS_VALID (payload->ts)); --j) {
1629 payload = &g_array_index (stream->payloads, AsfPayload, j);
1632 /* If there's a complete payload queued for this stream */
1633 if (!gst_asf_payload_is_complete (payload))
1639 /* find last payload with timestamp */
1640 for (last_idx = stream->payloads->len - 1;
1641 last_idx >= 0 && (payload == NULL
1642 || !GST_CLOCK_TIME_IS_VALID (payload->ts)); --last_idx) {
1643 payload = &g_array_index (stream->payloads, AsfPayload, last_idx);
1646 /* if this is first payload after seek we might need to update the segment */
1647 if (GST_CLOCK_TIME_IS_VALID (payload->ts))
1648 gst_asf_demux_check_segment_ts (demux, payload->ts);
1650 if (G_UNLIKELY (GST_CLOCK_TIME_IS_VALID (payload->ts) &&
1651 (payload->ts < demux->segment.start))) {
1652 if (G_UNLIKELY ((!demux->keyunit_sync) && (!demux->accurate)
1653 && payload->keyframe)) {
1654 GST_DEBUG_OBJECT (stream->pad,
1655 "Found keyframe, updating segment start to %" GST_TIME_FORMAT,
1656 GST_TIME_ARGS (payload->ts));
1657 demux->segment.start = payload->ts;
1658 demux->segment.time = payload->ts;
1660 GST_DEBUG_OBJECT (stream->pad, "Last queued payload has timestamp %"
1661 GST_TIME_FORMAT " which is before our segment start %"
1662 GST_TIME_FORMAT ", not pushing yet",
1663 GST_TIME_ARGS (payload->ts),
1664 GST_TIME_ARGS (demux->segment.start));
1669 /* find first complete payload with timestamp */
1671 j < stream->payloads->len && (payload == NULL
1672 || !GST_CLOCK_TIME_IS_VALID (payload->ts)); ++j) {
1673 payload = &g_array_index (stream->payloads, AsfPayload, j);
1676 /* Now see if there's a complete payload queued for this stream */
1677 if (!gst_asf_payload_is_complete (payload))
1681 /* ... and whether its timestamp is lower than the current best */
1682 if (best_stream == NULL || best_payload->ts > payload->ts) {
1683 best_stream = stream;
1684 best_payload = payload;
1692 static GstFlowReturn
1693 gst_asf_demux_push_complete_payloads (GstASFDemux * demux, gboolean force)
1696 GstFlowReturn ret = GST_FLOW_OK;
1698 if (G_UNLIKELY (!demux->activated_streams)) {
1699 if (!gst_asf_demux_check_activate_streams (demux, force))
1701 /* streams are now activated */
1704 while ((stream = gst_asf_demux_find_stream_with_complete_payload (demux))) {
1705 AsfPayload *payload;
1706 GstClockTime timestamp = GST_CLOCK_TIME_NONE;
1707 GstClockTime duration = GST_CLOCK_TIME_NONE;
1709 /* wait until we had a chance to "lock on" some payload's timestamp */
1710 if (G_UNLIKELY (demux->need_newsegment
1711 && !GST_CLOCK_TIME_IS_VALID (demux->segment_ts)))
1714 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment) && stream->is_video
1715 && stream->payloads->len) {
1716 payload = &g_array_index (stream->payloads, AsfPayload, stream->kf_pos);
1718 payload = &g_array_index (stream->payloads, AsfPayload, 0);
1721 /* do we need to send a newsegment event */
1722 if ((G_UNLIKELY (demux->need_newsegment))) {
1723 GstEvent *segment_event;
1725 /* safe default if insufficient upstream info */
1726 if (!GST_CLOCK_TIME_IS_VALID (demux->in_gap))
1729 if (demux->segment.stop == GST_CLOCK_TIME_NONE &&
1730 demux->segment.duration > 0) {
1731 /* slight HACK; prevent clipping of last bit */
1732 demux->segment.stop = demux->segment.duration + demux->in_gap;
1735 /* FIXME : only if ACCURATE ! */
1736 if (G_LIKELY (!demux->keyunit_sync && !demux->accurate
1737 && (GST_CLOCK_TIME_IS_VALID (payload->ts)))
1738 && !GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)) {
1739 GST_DEBUG ("Adjusting newsegment start to %" GST_TIME_FORMAT,
1740 GST_TIME_ARGS (payload->ts));
1741 demux->segment.start = payload->ts;
1742 demux->segment.time = payload->ts;
1745 GST_DEBUG_OBJECT (demux, "sending new-segment event %" GST_SEGMENT_FORMAT,
1748 /* note: we fix up all timestamps to start from 0, so this should be ok */
1749 segment_event = gst_event_new_segment (&demux->segment);
1750 if (demux->segment_seqnum)
1751 gst_event_set_seqnum (segment_event, demux->segment_seqnum);
1752 gst_asf_demux_send_event_unlocked (demux, segment_event);
1754 /* now post any global tags we may have found */
1755 if (demux->taglist == NULL) {
1756 demux->taglist = gst_tag_list_new_empty ();
1757 gst_tag_list_set_scope (demux->taglist, GST_TAG_SCOPE_GLOBAL);
1760 gst_tag_list_add (demux->taglist, GST_TAG_MERGE_REPLACE,
1761 GST_TAG_CONTAINER_FORMAT, "ASF", NULL);
1763 GST_DEBUG_OBJECT (demux, "global tags: %" GST_PTR_FORMAT, demux->taglist);
1764 gst_asf_demux_send_event_unlocked (demux,
1765 gst_event_new_tag (demux->taglist));
1766 demux->taglist = NULL;
1768 demux->need_newsegment = FALSE;
1769 demux->segment_seqnum = 0;
1770 demux->segment_running = TRUE;
1773 /* Do we have tags pending for this stream? */
1774 if (G_UNLIKELY (stream->pending_tags)) {
1775 GST_LOG_OBJECT (stream->pad, "%" GST_PTR_FORMAT, stream->pending_tags);
1776 gst_pad_push_event (stream->pad,
1777 gst_event_new_tag (stream->pending_tags));
1778 stream->pending_tags = NULL;
1781 /* We have the whole packet now so we should push the packet to
1782 * the src pad now. First though we should check if we need to do
1784 if (G_UNLIKELY (stream->span > 1)) {
1785 gst_asf_demux_descramble_buffer (demux, stream, &payload->buf);
1788 payload->buf = gst_buffer_make_writable (payload->buf);
1790 if (G_LIKELY (!payload->keyframe)) {
1791 GST_BUFFER_FLAG_SET (payload->buf, GST_BUFFER_FLAG_DELTA_UNIT);
1794 if (G_UNLIKELY (stream->discont)) {
1795 GST_DEBUG_OBJECT (stream->pad, "marking DISCONT on stream");
1796 GST_BUFFER_FLAG_SET (payload->buf, GST_BUFFER_FLAG_DISCONT);
1797 stream->discont = FALSE;
1800 if (G_UNLIKELY (stream->is_video && payload->par_x && payload->par_y &&
1801 (payload->par_x != stream->par_x) &&
1802 (payload->par_y != stream->par_y))) {
1803 GST_DEBUG ("Updating PAR (%d/%d => %d/%d)",
1804 stream->par_x, stream->par_y, payload->par_x, payload->par_y);
1805 stream->par_x = payload->par_x;
1806 stream->par_y = payload->par_y;
1807 stream->caps = gst_caps_make_writable (stream->caps);
1808 gst_caps_set_simple (stream->caps, "pixel-aspect-ratio",
1809 GST_TYPE_FRACTION, stream->par_x, stream->par_y, NULL);
1810 gst_pad_set_caps (stream->pad, stream->caps);
1813 if (G_UNLIKELY (stream->interlaced != payload->interlaced)) {
1814 GST_DEBUG ("Updating interlaced status (%d => %d)", stream->interlaced,
1815 payload->interlaced);
1816 stream->interlaced = payload->interlaced;
1817 stream->caps = gst_caps_make_writable (stream->caps);
1818 gst_caps_set_simple (stream->caps, "interlace-mode", G_TYPE_BOOLEAN,
1819 (stream->interlaced ? "mixed" : "progressive"), NULL);
1820 gst_pad_set_caps (stream->pad, stream->caps);
1823 /* (sort of) interpolate timestamps using upstream "frame of reference",
1824 * typically useful for live src, but might (unavoidably) mess with
1825 * position reporting if a live src is playing not so live content
1826 * (e.g. rtspsrc taking some time to fall back to tcp) */
1827 timestamp = payload->ts;
1828 if (GST_CLOCK_TIME_IS_VALID (timestamp)
1829 && !GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)) {
1830 timestamp += demux->in_gap;
1832 /* Check if we're after the segment already, if so no need to push
1834 if (demux->segment.stop != -1 && timestamp > demux->segment.stop) {
1835 GST_DEBUG_OBJECT (stream->pad,
1836 "Payload after segment stop %" GST_TIME_FORMAT,
1837 GST_TIME_ARGS (demux->segment.stop));
1839 gst_flow_combiner_update_pad_flow (demux->flowcombiner, stream->pad,
1841 gst_buffer_unref (payload->buf);
1842 payload->buf = NULL;
1843 g_array_remove_index (stream->payloads, 0);
1844 /* Break out as soon as we have an issue */
1845 if (G_UNLIKELY (ret != GST_FLOW_OK))
1852 GST_BUFFER_PTS (payload->buf) = timestamp;
1854 if (payload->duration == GST_CLOCK_TIME_NONE
1855 && stream->ext_props.avg_time_per_frame != 0) {
1856 duration = stream->ext_props.avg_time_per_frame * 100;
1858 duration = payload->duration;
1860 GST_BUFFER_DURATION (payload->buf) = duration;
1862 /* FIXME: we should really set durations on buffers if we can */
1864 GST_LOG_OBJECT (stream->pad, "pushing buffer, %" GST_PTR_FORMAT,
1867 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment) && stream->is_video) {
1868 if (stream->reverse_kf_ready == TRUE && stream->kf_pos == 0) {
1869 GST_BUFFER_FLAG_SET (payload->buf, GST_BUFFER_FLAG_DISCONT);
1871 } else if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)) {
1872 GST_BUFFER_FLAG_SET (payload->buf, GST_BUFFER_FLAG_DISCONT);
1876 if (stream->active) {
1877 if (G_UNLIKELY (stream->first_buffer)) {
1878 if (stream->streamheader != NULL) {
1879 GST_DEBUG_OBJECT (stream->pad,
1880 "Pushing streamheader before first buffer");
1881 gst_pad_push (stream->pad, gst_buffer_ref (stream->streamheader));
1883 stream->first_buffer = FALSE;
1886 if (GST_CLOCK_TIME_IS_VALID (timestamp)
1887 && timestamp > demux->segment.position) {
1888 demux->segment.position = timestamp;
1889 if (GST_CLOCK_TIME_IS_VALID (duration))
1890 demux->segment.position += timestamp;
1893 ret = gst_pad_push (stream->pad, payload->buf);
1895 gst_flow_combiner_update_pad_flow (demux->flowcombiner, stream->pad,
1898 gst_buffer_unref (payload->buf);
1901 payload->buf = NULL;
1902 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment) && stream->is_video
1903 && stream->reverse_kf_ready) {
1904 g_array_remove_index (stream->payloads, stream->kf_pos);
1907 if (stream->reverse_kf_ready == TRUE && stream->kf_pos < 0) {
1909 stream->reverse_kf_ready = FALSE;
1912 g_array_remove_index (stream->payloads, 0);
1915 /* Break out as soon as we have an issue */
1916 if (G_UNLIKELY (ret != GST_FLOW_OK))
1924 gst_asf_demux_check_buffer_is_header (GstASFDemux * demux, GstBuffer * buf)
1929 g_assert (buf != NULL);
1931 GST_LOG_OBJECT (demux, "Checking if buffer is a header");
1933 gst_buffer_map (buf, &map, GST_MAP_READ);
1935 /* we return false on buffer too small */
1936 if (map.size < ASF_OBJECT_HEADER_SIZE) {
1937 gst_buffer_unmap (buf, &map);
1941 /* check if it is a header */
1943 asf_demux_peek_object (demux, map.data, ASF_OBJECT_HEADER_SIZE, &obj,
1945 gst_buffer_unmap (buf, &map);
1946 if (valid && obj.id == ASF_OBJ_HEADER) {
1953 gst_asf_demux_check_chained_asf (GstASFDemux * demux)
1955 guint64 off = demux->data_offset + (demux->packet * demux->packet_size);
1956 GstFlowReturn ret = GST_FLOW_OK;
1957 GstBuffer *buf = NULL;
1958 gboolean header = FALSE;
1960 /* TODO maybe we should skip index objects after the data and look
1961 * further for a new header */
1962 if (gst_asf_demux_pull_data (demux, off, ASF_OBJECT_HEADER_SIZE, &buf, &ret)) {
1963 g_assert (buf != NULL);
1964 /* check if it is a header */
1965 if (gst_asf_demux_check_buffer_is_header (demux, buf)) {
1966 GST_DEBUG_OBJECT (demux, "new base offset: %" G_GUINT64_FORMAT, off);
1967 demux->base_offset = off;
1971 gst_buffer_unref (buf);
1978 gst_asf_demux_loop (GstASFDemux * demux)
1980 GstFlowReturn flow = GST_FLOW_OK;
1981 GstBuffer *buf = NULL;
1984 if (G_UNLIKELY (demux->state == GST_ASF_DEMUX_STATE_HEADER)) {
1985 if (!gst_asf_demux_pull_headers (demux, &flow)) {
1989 flow = gst_asf_demux_pull_indices (demux);
1990 if (flow != GST_FLOW_OK)
1994 g_assert (demux->state == GST_ASF_DEMUX_STATE_DATA);
1996 if (G_UNLIKELY (demux->num_packets != 0
1997 && demux->packet >= demux->num_packets))
2000 GST_LOG_OBJECT (demux, "packet %u/%u", (guint) demux->packet + 1,
2001 (guint) demux->num_packets);
2003 off = demux->data_offset + (demux->packet * demux->packet_size);
2005 if (G_UNLIKELY (!gst_asf_demux_pull_data (demux, off,
2006 demux->packet_size * demux->speed_packets, &buf, &flow))) {
2007 GST_DEBUG_OBJECT (demux, "got flow %s", gst_flow_get_name (flow));
2008 if (flow == GST_FLOW_EOS) {
2010 } else if (flow == GST_FLOW_FLUSHING) {
2011 GST_DEBUG_OBJECT (demux, "Not fatal");
2018 if (G_LIKELY (demux->speed_packets == 1)) {
2019 GstAsfDemuxParsePacketError err;
2020 err = gst_asf_demux_parse_packet (demux, buf);
2021 if (G_UNLIKELY (err != GST_ASF_DEMUX_PARSE_PACKET_ERROR_NONE)) {
2022 /* when we don't know when the data object ends, we should check
2023 * for a chained asf */
2024 if (demux->num_packets == 0) {
2025 if (gst_asf_demux_check_buffer_is_header (demux, buf)) {
2026 GST_INFO_OBJECT (demux, "Chained asf found");
2027 demux->base_offset = off;
2028 gst_asf_demux_reset (demux, TRUE);
2029 gst_buffer_unref (buf);
2033 /* FIXME: We should tally up fatal errors and error out only
2034 * after a few broken packets in a row? */
2036 GST_INFO_OBJECT (demux, "Ignoring recoverable parse error");
2037 gst_buffer_unref (buf);
2039 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)
2040 && !demux->seek_to_cur_pos) {
2042 if (demux->packet < 0) {
2052 flow = gst_asf_demux_push_complete_payloads (demux, FALSE);
2054 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)
2055 && !demux->seek_to_cur_pos) {
2057 if (demux->packet < 0) {
2066 for (n = 0; n < demux->speed_packets; n++) {
2068 GstAsfDemuxParsePacketError err;
2071 gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL,
2072 n * demux->packet_size, demux->packet_size);
2073 err = gst_asf_demux_parse_packet (demux, sub);
2074 if (G_UNLIKELY (err != GST_ASF_DEMUX_PARSE_PACKET_ERROR_NONE)) {
2075 /* when we don't know when the data object ends, we should check
2076 * for a chained asf */
2077 if (demux->num_packets == 0) {
2078 if (gst_asf_demux_check_buffer_is_header (demux, sub)) {
2079 GST_INFO_OBJECT (demux, "Chained asf found");
2080 demux->base_offset = off + n * demux->packet_size;
2081 gst_asf_demux_reset (demux, TRUE);
2082 gst_buffer_unref (sub);
2083 gst_buffer_unref (buf);
2087 /* FIXME: We should tally up fatal errors and error out only
2088 * after a few broken packets in a row? */
2090 GST_INFO_OBJECT (demux, "Ignoring recoverable parse error");
2094 gst_buffer_unref (sub);
2096 if (err == GST_ASF_DEMUX_PARSE_PACKET_ERROR_NONE)
2097 flow = gst_asf_demux_push_complete_payloads (demux, FALSE);
2103 /* reset speed pull */
2104 demux->speed_packets = 1;
2107 gst_buffer_unref (buf);
2109 if (G_UNLIKELY ((demux->num_packets > 0
2110 && demux->packet >= demux->num_packets)
2111 || flow == GST_FLOW_EOS)) {
2112 GST_LOG_OBJECT (demux, "reached EOS");
2116 if (G_UNLIKELY (flow != GST_FLOW_OK)) {
2117 GST_DEBUG_OBJECT (demux, "pushing complete payloads failed");
2121 /* check if we're at the end of the configured segment */
2122 /* FIXME: check if segment end reached etc. */
2128 /* if we haven't activated our streams yet, this might be because we have
2129 * less data queued than required for preroll; force stream activation and
2130 * send any pending payloads before sending EOS */
2131 if (!demux->activated_streams)
2132 flow = gst_asf_demux_push_complete_payloads (demux, TRUE);
2134 /* we want to push an eos or post a segment-done in any case */
2135 if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
2138 /* for segment playback we need to post when (in stream time)
2139 * we stopped, this is either stop (when set) or the duration. */
2140 if ((stop = demux->segment.stop) == -1)
2141 stop = demux->segment.duration;
2143 GST_INFO_OBJECT (demux, "Posting segment-done, at end of segment");
2144 gst_element_post_message (GST_ELEMENT_CAST (demux),
2145 gst_message_new_segment_done (GST_OBJECT (demux), GST_FORMAT_TIME,
2147 gst_asf_demux_send_event_unlocked (demux,
2148 gst_event_new_segment_done (GST_FORMAT_TIME, stop));
2149 } else if (flow != GST_FLOW_EOS) {
2150 /* check if we have a chained asf, in case, we don't eos yet */
2151 if (gst_asf_demux_check_chained_asf (demux)) {
2152 GST_INFO_OBJECT (demux, "Chained ASF starting");
2153 gst_asf_demux_reset (demux, TRUE);
2158 if (!(demux->segment.flags & GST_SEEK_FLAG_SEGMENT)) {
2159 if (demux->activated_streams) {
2160 /* normal playback, send EOS to all linked pads */
2161 GST_INFO_OBJECT (demux, "Sending EOS, at end of stream");
2162 gst_asf_demux_send_event_unlocked (demux, gst_event_new_eos ());
2164 GST_WARNING_OBJECT (demux, "EOS without exposed streams");
2165 flow = GST_FLOW_EOS;
2168 /* ... and fall through to pause */
2172 GST_DEBUG_OBJECT (demux, "pausing task, flow return: %s",
2173 gst_flow_get_name (flow));
2174 demux->segment_running = FALSE;
2175 gst_pad_pause_task (demux->sinkpad);
2177 /* For the error cases */
2178 if (flow == GST_FLOW_EOS && !demux->activated_streams) {
2179 GST_ELEMENT_ERROR (demux, STREAM, WRONG_TYPE, (NULL),
2180 ("This doesn't seem to be an ASF file"));
2181 } else if (flow < GST_FLOW_EOS || flow == GST_FLOW_NOT_LINKED) {
2182 /* Post an error. Hopefully something else already has, but if not... */
2183 GST_ELEMENT_FLOW_ERROR (demux, flow);
2184 gst_asf_demux_send_event_unlocked (demux, gst_event_new_eos ());
2193 GST_DEBUG_OBJECT (demux, "Read failed, doh");
2194 flow = GST_FLOW_EOS;
2198 /* See FIXMEs above */
2201 gst_buffer_unref (buf);
2202 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
2203 ("Error parsing ASF packet %u", (guint) demux->packet));
2204 gst_asf_demux_send_event_unlocked (demux, gst_event_new_eos ());
2205 flow = GST_FLOW_ERROR;
2211 #define GST_ASF_DEMUX_CHECK_HEADER_YES 0
2212 #define GST_ASF_DEMUX_CHECK_HEADER_NO 1
2213 #define GST_ASF_DEMUX_CHECK_HEADER_NEED_DATA 2
2216 gst_asf_demux_check_header (GstASFDemux * demux)
2219 guint8 *cdata = (guint8 *) gst_adapter_map (demux->adapter,
2220 ASF_OBJECT_HEADER_SIZE);
2221 if (cdata == NULL) /* need more data */
2222 return GST_ASF_DEMUX_CHECK_HEADER_NEED_DATA;
2224 if (asf_demux_peek_object (demux, cdata, ASF_OBJECT_HEADER_SIZE, &obj, FALSE
2225 && obj.id == ASF_OBJ_HEADER))
2226 return GST_ASF_DEMUX_CHECK_HEADER_YES;
2228 return GST_ASF_DEMUX_CHECK_HEADER_NO;
2231 static GstFlowReturn
2232 gst_asf_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
2234 GstFlowReturn ret = GST_FLOW_OK;
2237 demux = GST_ASF_DEMUX (parent);
2239 GST_LOG_OBJECT (demux,
2240 "buffer: size=%" G_GSIZE_FORMAT ", offset=%" G_GINT64_FORMAT ", time=%"
2241 GST_TIME_FORMAT, gst_buffer_get_size (buf), GST_BUFFER_OFFSET (buf),
2242 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
2244 if (G_UNLIKELY (GST_BUFFER_IS_DISCONT (buf))) {
2245 GST_DEBUG_OBJECT (demux, "received DISCONT");
2246 gst_asf_demux_mark_discont (demux);
2249 if (G_UNLIKELY ((!GST_CLOCK_TIME_IS_VALID (demux->in_gap) &&
2250 GST_BUFFER_TIMESTAMP_IS_VALID (buf)))) {
2251 demux->in_gap = GST_BUFFER_TIMESTAMP (buf) - demux->in_segment.start;
2252 GST_DEBUG_OBJECT (demux, "upstream segment start %" GST_TIME_FORMAT
2253 ", interpolation gap: %" GST_TIME_FORMAT,
2254 GST_TIME_ARGS (demux->in_segment.start), GST_TIME_ARGS (demux->in_gap));
2257 gst_adapter_push (demux->adapter, buf);
2259 switch (demux->state) {
2260 case GST_ASF_DEMUX_STATE_INDEX:{
2261 gint result = gst_asf_demux_check_header (demux);
2262 if (result == GST_ASF_DEMUX_CHECK_HEADER_NEED_DATA) /* need more data */
2265 if (result == GST_ASF_DEMUX_CHECK_HEADER_NO) {
2266 /* we don't care about this, probably an index */
2267 /* TODO maybe would be smarter to skip all the indices
2268 * until we got a new header or EOS to decide */
2269 GST_LOG_OBJECT (demux, "Received index object, its EOS");
2272 GST_INFO_OBJECT (demux, "Chained asf starting");
2273 /* cleanup and get ready for a chained asf */
2274 gst_asf_demux_reset (demux, TRUE);
2278 case GST_ASF_DEMUX_STATE_HEADER:{
2279 ret = gst_asf_demux_chain_headers (demux);
2280 if (demux->state != GST_ASF_DEMUX_STATE_DATA)
2282 /* otherwise fall through */
2284 case GST_ASF_DEMUX_STATE_DATA:
2288 data_size = demux->packet_size;
2290 while (gst_adapter_available (demux->adapter) >= data_size) {
2292 GstAsfDemuxParsePacketError err;
2294 /* we don't know the length of the stream
2295 * check for a chained asf everytime */
2296 if (demux->num_packets == 0) {
2297 gint result = gst_asf_demux_check_header (demux);
2299 if (result == GST_ASF_DEMUX_CHECK_HEADER_YES) {
2300 GST_INFO_OBJECT (demux, "Chained asf starting");
2301 /* cleanup and get ready for a chained asf */
2302 gst_asf_demux_reset (demux, TRUE);
2305 } else if (G_UNLIKELY (demux->num_packets != 0 && demux->packet >= 0
2306 && demux->packet >= demux->num_packets)) {
2307 /* do not overshoot data section when streaming */
2311 buf = gst_adapter_take_buffer (demux->adapter, data_size);
2313 /* FIXME: We should tally up fatal errors and error out only
2314 * after a few broken packets in a row? */
2315 err = gst_asf_demux_parse_packet (demux, buf);
2317 gst_buffer_unref (buf);
2319 if (G_LIKELY (err == GST_ASF_DEMUX_PARSE_PACKET_ERROR_NONE))
2320 ret = gst_asf_demux_push_complete_payloads (demux, FALSE);
2322 GST_WARNING_OBJECT (demux, "Parse error");
2324 if (demux->packet >= 0)
2327 if (G_UNLIKELY (demux->num_packets != 0 && demux->packet >= 0
2328 && demux->packet >= demux->num_packets)) {
2329 demux->state = GST_ASF_DEMUX_STATE_INDEX;
2334 g_assert_not_reached ();
2338 if (ret != GST_FLOW_OK)
2339 GST_DEBUG_OBJECT (demux, "flow: %s", gst_flow_get_name (ret));
2345 GST_DEBUG_OBJECT (demux, "Handled last packet, setting EOS");
2351 static inline gboolean
2352 gst_asf_demux_skip_bytes (guint num_bytes, guint8 ** p_data, guint64 * p_size)
2354 if (*p_size < num_bytes)
2357 *p_data += num_bytes;
2358 *p_size -= num_bytes;
2362 static inline guint8
2363 gst_asf_demux_get_uint8 (guint8 ** p_data, guint64 * p_size)
2367 g_assert (*p_size >= 1);
2368 ret = GST_READ_UINT8 (*p_data);
2369 *p_data += sizeof (guint8);
2370 *p_size -= sizeof (guint8);
2374 static inline guint16
2375 gst_asf_demux_get_uint16 (guint8 ** p_data, guint64 * p_size)
2379 g_assert (*p_size >= 2);
2380 ret = GST_READ_UINT16_LE (*p_data);
2381 *p_data += sizeof (guint16);
2382 *p_size -= sizeof (guint16);
2386 static inline guint32
2387 gst_asf_demux_get_uint32 (guint8 ** p_data, guint64 * p_size)
2391 g_assert (*p_size >= 4);
2392 ret = GST_READ_UINT32_LE (*p_data);
2393 *p_data += sizeof (guint32);
2394 *p_size -= sizeof (guint32);
2398 static inline guint64
2399 gst_asf_demux_get_uint64 (guint8 ** p_data, guint64 * p_size)
2403 g_assert (*p_size >= 8);
2404 ret = GST_READ_UINT64_LE (*p_data);
2405 *p_data += sizeof (guint64);
2406 *p_size -= sizeof (guint64);
2411 gst_asf_demux_get_buffer (GstBuffer ** p_buf, guint num_bytes_to_read,
2412 guint8 ** p_data, guint64 * p_size)
2416 if (*p_size < num_bytes_to_read)
2419 *p_buf = gst_buffer_new_and_alloc (num_bytes_to_read);
2420 gst_buffer_fill (*p_buf, 0, *p_data, num_bytes_to_read);
2422 *p_data += num_bytes_to_read;
2423 *p_size -= num_bytes_to_read;
2429 gst_asf_demux_get_bytes (guint8 ** p_buf, guint num_bytes_to_read,
2430 guint8 ** p_data, guint64 * p_size)
2434 if (*p_size < num_bytes_to_read)
2437 *p_buf = g_memdup (*p_data, num_bytes_to_read);
2438 *p_data += num_bytes_to_read;
2439 *p_size -= num_bytes_to_read;
2444 gst_asf_demux_get_string (gchar ** p_str, guint16 * p_strlen,
2445 guint8 ** p_data, guint64 * p_size)
2455 s_length = gst_asf_demux_get_uint16 (p_data, p_size);
2458 *p_strlen = s_length;
2460 if (s_length == 0) {
2461 GST_WARNING ("zero-length string");
2462 *p_str = g_strdup ("");
2466 if (!gst_asf_demux_get_bytes (&s, s_length, p_data, p_size))
2469 g_assert (s != NULL);
2471 /* just because They don't exist doesn't
2472 * mean They are not out to get you ... */
2473 if (s[s_length - 1] != '\0') {
2474 s = g_realloc (s, s_length + 1);
2478 *p_str = (gchar *) s;
2484 gst_asf_demux_get_guid (ASFGuid * guid, guint8 ** p_data, guint64 * p_size)
2486 g_assert (*p_size >= 4 * sizeof (guint32));
2488 guid->v1 = gst_asf_demux_get_uint32 (p_data, p_size);
2489 guid->v2 = gst_asf_demux_get_uint32 (p_data, p_size);
2490 guid->v3 = gst_asf_demux_get_uint32 (p_data, p_size);
2491 guid->v4 = gst_asf_demux_get_uint32 (p_data, p_size);
2495 gst_asf_demux_get_stream_audio (asf_stream_audio * audio, guint8 ** p_data,
2498 if (*p_size < (2 + 2 + 4 + 4 + 2 + 2 + 2))
2501 /* WAVEFORMATEX Structure */
2502 audio->codec_tag = gst_asf_demux_get_uint16 (p_data, p_size);
2503 audio->channels = gst_asf_demux_get_uint16 (p_data, p_size);
2504 audio->sample_rate = gst_asf_demux_get_uint32 (p_data, p_size);
2505 audio->byte_rate = gst_asf_demux_get_uint32 (p_data, p_size);
2506 audio->block_align = gst_asf_demux_get_uint16 (p_data, p_size);
2507 audio->word_size = gst_asf_demux_get_uint16 (p_data, p_size);
2508 /* Codec specific data size */
2509 audio->size = gst_asf_demux_get_uint16 (p_data, p_size);
2510 if (audio->size > *p_size) {
2511 GST_WARNING ("Corrupted audio codec_data (should be at least %u bytes, is %"
2512 G_GUINT64_FORMAT " long)", audio->size, *p_size);
2519 gst_asf_demux_get_stream_video (asf_stream_video * video, guint8 ** p_data,
2522 if (*p_size < (4 + 4 + 1 + 2))
2525 video->width = gst_asf_demux_get_uint32 (p_data, p_size);
2526 video->height = gst_asf_demux_get_uint32 (p_data, p_size);
2527 video->unknown = gst_asf_demux_get_uint8 (p_data, p_size);
2528 video->size = gst_asf_demux_get_uint16 (p_data, p_size);
2533 gst_asf_demux_get_stream_video_format (asf_stream_video_format * fmt,
2534 guint8 ** p_data, guint64 * p_size)
2536 if (*p_size < (4 + 4 + 4 + 2 + 2 + 4 + 4 + 4 + 4 + 4 + 4))
2539 fmt->size = gst_asf_demux_get_uint32 (p_data, p_size);
2541 if (fmt->size < 40) {
2542 GST_WARNING ("Corrupted asf_stream_video_format (size < 40)");
2545 if ((guint64) fmt->size - 4 > *p_size) {
2546 GST_WARNING ("Corrupted asf_stream_video_format (codec_data is too small)");
2549 fmt->width = gst_asf_demux_get_uint32 (p_data, p_size);
2550 fmt->height = gst_asf_demux_get_uint32 (p_data, p_size);
2551 fmt->planes = gst_asf_demux_get_uint16 (p_data, p_size);
2552 fmt->depth = gst_asf_demux_get_uint16 (p_data, p_size);
2553 fmt->tag = gst_asf_demux_get_uint32 (p_data, p_size);
2554 fmt->image_size = gst_asf_demux_get_uint32 (p_data, p_size);
2555 fmt->xpels_meter = gst_asf_demux_get_uint32 (p_data, p_size);
2556 fmt->ypels_meter = gst_asf_demux_get_uint32 (p_data, p_size);
2557 fmt->num_colors = gst_asf_demux_get_uint32 (p_data, p_size);
2558 fmt->imp_colors = gst_asf_demux_get_uint32 (p_data, p_size);
2563 gst_asf_demux_get_stream (GstASFDemux * demux, guint16 id)
2567 for (i = 0; i < demux->num_streams; i++) {
2568 if (demux->stream[i].id == id)
2569 return &demux->stream[i];
2572 if (gst_asf_demux_is_unknown_stream (demux, id))
2573 GST_WARNING ("Segment found for undefined stream: (%d)", id);
2578 gst_asf_demux_setup_pad (GstASFDemux * demux, GstPad * src_pad,
2579 GstCaps * caps, guint16 id, gboolean is_video, GstBuffer * streamheader,
2584 gst_pad_use_fixed_caps (src_pad);
2585 gst_pad_set_caps (src_pad, caps);
2587 gst_pad_set_event_function (src_pad,
2588 GST_DEBUG_FUNCPTR (gst_asf_demux_handle_src_event));
2589 gst_pad_set_query_function (src_pad,
2590 GST_DEBUG_FUNCPTR (gst_asf_demux_handle_src_query));
2592 stream = &demux->stream[demux->num_streams];
2593 stream->caps = caps;
2594 stream->pad = src_pad;
2596 stream->fps_known = !is_video; /* bit hacky for audio */
2597 stream->is_video = is_video;
2598 stream->pending_tags = tags;
2599 stream->discont = TRUE;
2600 stream->first_buffer = TRUE;
2601 stream->streamheader = streamheader;
2602 if (stream->streamheader) {
2603 stream->streamheader = gst_buffer_make_writable (streamheader);
2604 GST_BUFFER_FLAG_SET (stream->streamheader, GST_BUFFER_FLAG_HEADER);
2609 st = gst_caps_get_structure (caps, 0);
2610 if (gst_structure_get_fraction (st, "pixel-aspect-ratio", &par_x, &par_y) &&
2611 par_x > 0 && par_y > 0) {
2612 GST_DEBUG ("PAR %d/%d", par_x, par_y);
2613 stream->par_x = par_x;
2614 stream->par_y = par_y;
2618 stream->payloads = g_array_new (FALSE, FALSE, sizeof (AsfPayload));
2620 /* TODO: create this array during reverse play? */
2621 stream->payloads_rev = g_array_new (FALSE, FALSE, sizeof (AsfPayload));
2623 GST_INFO ("Created pad %s for stream %u with caps %" GST_PTR_FORMAT,
2624 GST_PAD_NAME (src_pad), demux->num_streams, caps);
2626 ++demux->num_streams;
2628 stream->active = FALSE;
2634 gst_asf_demux_add_stream_headers_to_caps (GstASFDemux * demux,
2635 GstBuffer * buffer, GstStructure * structure)
2637 GValue arr_val = G_VALUE_INIT;
2638 GValue buf_val = G_VALUE_INIT;
2640 g_value_init (&arr_val, GST_TYPE_ARRAY);
2641 g_value_init (&buf_val, GST_TYPE_BUFFER);
2643 gst_value_set_buffer (&buf_val, buffer);
2644 gst_value_array_append_and_take_value (&arr_val, &buf_val);
2646 gst_structure_take_value (structure, "streamheader", &arr_val);
2650 gst_asf_demux_add_audio_stream (GstASFDemux * demux,
2651 asf_stream_audio * audio, guint16 id, guint8 ** p_data, guint64 * p_size)
2653 GstTagList *tags = NULL;
2654 GstBuffer *extradata = NULL;
2657 guint16 size_left = 0;
2658 gchar *codec_name = NULL;
2661 size_left = audio->size;
2663 /* Create the audio pad */
2664 name = g_strdup_printf ("audio_%u", demux->num_audio_streams);
2666 src_pad = gst_pad_new_from_static_template (&audio_src_template, name);
2669 /* Swallow up any left over data and set up the
2670 * standard properties from the header info */
2672 GST_INFO_OBJECT (demux, "Audio header contains %d bytes of "
2673 "codec specific data", size_left);
2675 g_assert (size_left <= *p_size);
2676 gst_asf_demux_get_buffer (&extradata, size_left, p_data, p_size);
2679 /* asf_stream_audio is the same as gst_riff_strf_auds, but with an
2680 * additional two bytes indicating extradata. */
2681 /* FIXME: Handle the channel reorder map here */
2682 caps = gst_riff_create_audio_caps (audio->codec_tag, NULL,
2683 (gst_riff_strf_auds *) audio, extradata, NULL, &codec_name, NULL);
2686 caps = gst_caps_new_simple ("audio/x-asf-unknown", "codec_id",
2687 G_TYPE_INT, (gint) audio->codec_tag, NULL);
2690 /* Informing about that audio format we just added */
2692 tags = gst_tag_list_new (GST_TAG_AUDIO_CODEC, codec_name, NULL);
2693 g_free (codec_name);
2696 if (audio->byte_rate > 0) {
2697 /* Some ASF files have no bitrate props object (often seen with
2698 * ASF files that contain raw audio data). Example files can
2699 * be generated with FFmpeg (tested with v2.8.6), like this:
2701 * ffmpeg -i sine-wave.wav -c:a pcm_alaw file.asf
2703 * In this case, if audio->byte_rate is nonzero, use that as
2706 guint bitrate = audio->byte_rate * 8;
2709 tags = gst_tag_list_new_empty ();
2711 /* Add bitrate, but only if there is none set already, since
2712 * this is just a fallback in case there is no bitrate tag
2713 * already present */
2714 gst_tag_list_add (tags, GST_TAG_MERGE_KEEP, GST_TAG_BITRATE, bitrate, NULL);
2718 gst_buffer_unref (extradata);
2720 GST_INFO ("Adding audio stream #%u, id %u codec %u (0x%04x), tags=%"
2721 GST_PTR_FORMAT, demux->num_audio_streams, id, audio->codec_tag,
2722 audio->codec_tag, tags);
2724 ++demux->num_audio_streams;
2726 return gst_asf_demux_setup_pad (demux, src_pad, caps, id, FALSE, NULL, tags);
2730 gst_asf_demux_add_video_stream (GstASFDemux * demux,
2731 asf_stream_video_format * video, guint16 id,
2732 guint8 ** p_data, guint64 * p_size)
2734 GstTagList *tags = NULL;
2735 GstStructure *caps_s;
2736 GstBuffer *extradata = NULL;
2741 gchar *codec_name = NULL;
2742 guint64 size_left = video->size - 40;
2743 GstBuffer *streamheader = NULL;
2744 guint par_w = 1, par_h = 1;
2746 /* Create the video pad */
2747 name = g_strdup_printf ("video_%u", demux->num_video_streams);
2748 src_pad = gst_pad_new_from_static_template (&video_src_template, name);
2751 /* Now try some gstreamer formatted MIME types (from gst_avi_demux_strf_vids) */
2753 GST_LOG ("Video header has %" G_GUINT64_FORMAT
2754 " bytes of codec specific data (vs %" G_GUINT64_FORMAT ")", size_left,
2756 g_assert (size_left <= *p_size);
2757 gst_asf_demux_get_buffer (&extradata, size_left, p_data, p_size);
2760 GST_DEBUG ("video codec %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (video->tag));
2762 /* yes, asf_stream_video_format and gst_riff_strf_vids are the same */
2763 caps = gst_riff_create_video_caps (video->tag, NULL,
2764 (gst_riff_strf_vids *) video, extradata, NULL, &codec_name);
2767 caps = gst_caps_new_simple ("video/x-asf-unknown", "fourcc",
2768 G_TYPE_UINT, video->tag, NULL);
2773 s = gst_asf_demux_get_metadata_for_stream (demux, id);
2774 if (gst_structure_get_int (s, "AspectRatioX", &ax) &&
2775 gst_structure_get_int (s, "AspectRatioY", &ay) && (ax > 0 && ay > 0)) {
2778 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
2782 /* retry with the global metadata */
2783 GST_DEBUG ("Retrying with global metadata %" GST_PTR_FORMAT,
2784 demux->global_metadata);
2785 s = demux->global_metadata;
2786 if (gst_structure_get_uint (s, "AspectRatioX", &ax) &&
2787 gst_structure_get_uint (s, "AspectRatioY", &ay)) {
2788 GST_DEBUG ("ax:%d, ay:%d", ax, ay);
2789 if (ax > 0 && ay > 0) {
2792 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
2797 s = gst_caps_get_structure (caps, 0);
2798 gst_structure_remove_field (s, "framerate");
2801 caps_s = gst_caps_get_structure (caps, 0);
2803 /* add format field with fourcc to WMV/VC1 caps to differentiate variants */
2804 if (gst_structure_has_name (caps_s, "video/x-wmv")) {
2805 str = g_strdup_printf ("%" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (video->tag));
2806 gst_caps_set_simple (caps, "format", G_TYPE_STRING, str, NULL);
2809 /* check if h264 has codec_data (avc) or streamheaders (bytestream) */
2810 } else if (gst_structure_has_name (caps_s, "video/x-h264")) {
2811 const GValue *value = gst_structure_get_value (caps_s, "codec_data");
2813 GstBuffer *buf = gst_value_get_buffer (value);
2816 if (gst_buffer_map (buf, &mapinfo, GST_MAP_READ)) {
2817 if (mapinfo.size >= 4 && GST_READ_UINT32_BE (mapinfo.data) == 1) {
2818 /* this looks like a bytestream start */
2819 streamheader = gst_buffer_ref (buf);
2820 gst_asf_demux_add_stream_headers_to_caps (demux, buf, caps_s);
2821 gst_structure_remove_field (caps_s, "codec_data");
2824 gst_buffer_unmap (buf, &mapinfo);
2829 /* For a 3D video, set multiview information into the caps based on
2830 * what was detected during object parsing */
2831 if (demux->asf_3D_mode != GST_ASF_3D_NONE) {
2832 GstVideoMultiviewMode mv_mode = GST_VIDEO_MULTIVIEW_MODE_NONE;
2833 GstVideoMultiviewFlags mv_flags = GST_VIDEO_MULTIVIEW_FLAGS_NONE;
2834 const gchar *mview_mode_str;
2836 switch (demux->asf_3D_mode) {
2837 case GST_ASF_3D_SIDE_BY_SIDE_HALF_LR:
2838 mv_mode = GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE;
2840 case GST_ASF_3D_SIDE_BY_SIDE_HALF_RL:
2841 mv_mode = GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE;
2842 mv_flags = GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST;
2844 case GST_ASF_3D_TOP_AND_BOTTOM_HALF_LR:
2845 mv_mode = GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM;
2847 case GST_ASF_3D_TOP_AND_BOTTOM_HALF_RL:
2848 mv_mode = GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM;
2849 mv_flags = GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST;
2851 case GST_ASF_3D_DUAL_STREAM:{
2852 gboolean is_right_view = FALSE;
2853 /* if Advanced_Mutual_Exclusion object exists, use it
2854 * to figure out which is the left view (lower ID) */
2855 if (demux->mut_ex_streams != NULL) {
2859 length = g_slist_length (demux->mut_ex_streams);
2861 for (i = 0; i < length; i++) {
2864 v_s_id = g_slist_nth_data (demux->mut_ex_streams, i);
2866 GST_DEBUG_OBJECT (demux,
2867 "has Mutual_Exclusion object. stream id in object is %d",
2868 GPOINTER_TO_INT (v_s_id));
2870 if (id > GPOINTER_TO_INT (v_s_id))
2871 is_right_view = TRUE;
2874 /* if the Advaced_Mutual_Exclusion object doesn't exist, assume the
2875 * first video stream encountered has the lower ID */
2876 if (demux->num_video_streams > 0) {
2877 /* This is not the first video stream, assuming right eye view */
2878 is_right_view = TRUE;
2882 mv_mode = GST_VIDEO_MULTIVIEW_MODE_RIGHT;
2884 mv_mode = GST_VIDEO_MULTIVIEW_MODE_LEFT;
2891 GST_INFO_OBJECT (demux,
2892 "stream_id %d, has multiview-mode %d flags 0x%x", id, mv_mode,
2895 mview_mode_str = gst_video_multiview_mode_to_caps_string (mv_mode);
2896 if (mview_mode_str != NULL) {
2897 if (gst_video_multiview_guess_half_aspect (mv_mode, video->width,
2898 video->height, par_w, par_h))
2899 mv_flags |= GST_VIDEO_MULTIVIEW_FLAGS_HALF_ASPECT;
2901 gst_caps_set_simple (caps,
2902 "multiview-mode", G_TYPE_STRING, mview_mode_str,
2903 "multiview-flags", GST_TYPE_VIDEO_MULTIVIEW_FLAGSET, mv_flags,
2904 GST_FLAG_SET_MASK_EXACT, NULL);
2909 tags = gst_tag_list_new (GST_TAG_VIDEO_CODEC, codec_name, NULL);
2910 g_free (codec_name);
2914 gst_buffer_unref (extradata);
2916 GST_INFO ("Adding video stream #%u, id %u, codec %"
2917 GST_FOURCC_FORMAT " (0x%08x)", demux->num_video_streams, id,
2918 GST_FOURCC_ARGS (video->tag), video->tag);
2920 ++demux->num_video_streams;
2922 return gst_asf_demux_setup_pad (demux, src_pad, caps, id, TRUE,
2923 streamheader, tags);
2927 gst_asf_demux_activate_stream (GstASFDemux * demux, AsfStream * stream)
2929 if (!stream->active) {
2933 GST_INFO_OBJECT (demux, "Activating stream %2u, pad %s, caps %"
2934 GST_PTR_FORMAT, stream->id, GST_PAD_NAME (stream->pad), stream->caps);
2935 gst_pad_set_active (stream->pad, TRUE);
2938 gst_pad_create_stream_id_printf (stream->pad, GST_ELEMENT_CAST (demux),
2939 "%03u", stream->id);
2942 gst_pad_get_sticky_event (demux->sinkpad, GST_EVENT_STREAM_START, 0);
2944 if (gst_event_parse_group_id (event, &demux->group_id))
2945 demux->have_group_id = TRUE;
2947 demux->have_group_id = FALSE;
2948 gst_event_unref (event);
2949 } else if (!demux->have_group_id) {
2950 demux->have_group_id = TRUE;
2951 demux->group_id = gst_util_group_id_next ();
2954 event = gst_event_new_stream_start (stream_id);
2955 if (demux->have_group_id)
2956 gst_event_set_group_id (event, demux->group_id);
2958 gst_pad_push_event (stream->pad, event);
2960 gst_pad_set_caps (stream->pad, stream->caps);
2962 gst_element_add_pad (GST_ELEMENT_CAST (demux), stream->pad);
2963 gst_flow_combiner_add_pad (demux->flowcombiner, stream->pad);
2964 stream->active = TRUE;
2969 gst_asf_demux_parse_stream_object (GstASFDemux * demux, guint8 * data,
2972 AsfCorrectionType correction_type;
2973 AsfStreamType stream_type;
2974 GstClockTime time_offset;
2975 gboolean is_encrypted G_GNUC_UNUSED;
2979 guint stream_specific_size;
2980 guint type_specific_size G_GNUC_UNUSED;
2981 guint unknown G_GNUC_UNUSED;
2982 gboolean inspect_payload = FALSE;
2983 AsfStream *stream = NULL;
2985 /* Get the rest of the header's header */
2986 if (size < (16 + 16 + 8 + 4 + 4 + 2 + 4))
2987 goto not_enough_data;
2989 gst_asf_demux_get_guid (&guid, &data, &size);
2990 stream_type = gst_asf_demux_identify_guid (asf_stream_guids, &guid);
2992 gst_asf_demux_get_guid (&guid, &data, &size);
2993 correction_type = gst_asf_demux_identify_guid (asf_correction_guids, &guid);
2995 time_offset = gst_asf_demux_get_uint64 (&data, &size) * 100;
2997 type_specific_size = gst_asf_demux_get_uint32 (&data, &size);
2998 stream_specific_size = gst_asf_demux_get_uint32 (&data, &size);
3000 flags = gst_asf_demux_get_uint16 (&data, &size);
3001 stream_id = flags & 0x7f;
3002 is_encrypted = ! !((flags & 0x8000) << 15);
3003 unknown = gst_asf_demux_get_uint32 (&data, &size);
3005 GST_DEBUG_OBJECT (demux, "Found stream %u, time_offset=%" GST_TIME_FORMAT,
3006 stream_id, GST_TIME_ARGS (time_offset));
3008 /* dvr-ms has audio stream declared in stream specific data */
3009 if (stream_type == ASF_STREAM_EXT_EMBED_HEADER) {
3010 AsfExtStreamType ext_stream_type;
3011 gst_asf_demux_get_guid (&guid, &data, &size);
3012 ext_stream_type = gst_asf_demux_identify_guid (asf_ext_stream_guids, &guid);
3014 if (ext_stream_type == ASF_EXT_STREAM_AUDIO) {
3015 inspect_payload = TRUE;
3017 gst_asf_demux_get_guid (&guid, &data, &size);
3018 gst_asf_demux_get_uint32 (&data, &size);
3019 gst_asf_demux_get_uint32 (&data, &size);
3020 gst_asf_demux_get_uint32 (&data, &size);
3021 gst_asf_demux_get_guid (&guid, &data, &size);
3022 gst_asf_demux_get_uint32 (&data, &size);
3023 stream_type = ASF_STREAM_AUDIO;
3027 switch (stream_type) {
3028 case ASF_STREAM_AUDIO:{
3029 asf_stream_audio audio_object;
3031 if (!gst_asf_demux_get_stream_audio (&audio_object, &data, &size))
3032 goto not_enough_data;
3034 GST_INFO ("Object is an audio stream with %u bytes of additional data",
3037 stream = gst_asf_demux_add_audio_stream (demux, &audio_object, stream_id,
3040 switch (correction_type) {
3041 case ASF_CORRECTION_ON:{
3042 guint span, packet_size, chunk_size, data_size, silence_data;
3044 GST_INFO ("Using error correction");
3046 if (size < (1 + 2 + 2 + 2 + 1))
3047 goto not_enough_data;
3049 span = gst_asf_demux_get_uint8 (&data, &size);
3050 packet_size = gst_asf_demux_get_uint16 (&data, &size);
3051 chunk_size = gst_asf_demux_get_uint16 (&data, &size);
3052 data_size = gst_asf_demux_get_uint16 (&data, &size);
3053 silence_data = gst_asf_demux_get_uint8 (&data, &size);
3055 stream->span = span;
3057 GST_DEBUG_OBJECT (demux, "Descrambling ps:%u cs:%u ds:%u s:%u sd:%u",
3058 packet_size, chunk_size, data_size, span, silence_data);
3060 if (stream->span > 1) {
3061 if (chunk_size == 0 || ((packet_size / chunk_size) <= 1)) {
3062 /* Disable descrambling */
3065 /* FIXME: this else branch was added for
3066 * weird_al_yankovic - the saga begins.asf */
3067 stream->ds_packet_size = packet_size;
3068 stream->ds_chunk_size = chunk_size;
3071 /* Descambling is enabled */
3072 stream->ds_packet_size = packet_size;
3073 stream->ds_chunk_size = chunk_size;
3076 /* Now skip the rest of the silence data */
3078 gst_bytestream_flush (demux->bs, data_size - 1);
3080 /* FIXME: CHECKME. And why -1? */
3081 if (data_size > 1) {
3082 if (!gst_asf_demux_skip_bytes (data_size - 1, &data, &size)) {
3083 goto not_enough_data;
3089 case ASF_CORRECTION_OFF:{
3090 GST_INFO ("Error correction off");
3091 if (!gst_asf_demux_skip_bytes (stream_specific_size, &data, &size))
3092 goto not_enough_data;
3096 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
3097 ("Audio stream using unknown error correction"));
3104 case ASF_STREAM_VIDEO:{
3105 asf_stream_video_format video_format_object;
3106 asf_stream_video video_object;
3109 if (!gst_asf_demux_get_stream_video (&video_object, &data, &size))
3110 goto not_enough_data;
3112 vsize = video_object.size - 40; /* Byte order gets offset by single byte */
3114 GST_INFO ("object is a video stream with %u bytes of "
3115 "additional data", vsize);
3117 if (!gst_asf_demux_get_stream_video_format (&video_format_object,
3119 goto not_enough_data;
3122 stream = gst_asf_demux_add_video_stream (demux, &video_format_object,
3123 stream_id, &data, &size);
3129 GST_WARNING_OBJECT (demux, "Unknown stream type for stream %u",
3131 demux->other_streams =
3132 g_slist_append (demux->other_streams, GINT_TO_POINTER (stream_id));
3137 stream->inspect_payload = inspect_payload;
3142 GST_WARNING_OBJECT (demux, "Unexpected end of data parsing stream object");
3143 /* we'll error out later if we found no streams */
3148 static const gchar *
3149 gst_asf_demux_get_gst_tag_from_tag_name (const gchar * name_utf8)
3153 const gchar *asf_name;
3154 const gchar *gst_name;
3157 "WM/Genre", GST_TAG_GENRE}, {
3158 "WM/AlbumTitle", GST_TAG_ALBUM}, {
3159 "WM/AlbumArtist", GST_TAG_ARTIST}, {
3160 "WM/Picture", GST_TAG_IMAGE}, {
3161 "WM/Track", GST_TAG_TRACK_NUMBER}, {
3162 "WM/TrackNumber", GST_TAG_TRACK_NUMBER}, {
3163 "WM/Year", GST_TAG_DATE_TIME}
3164 /* { "WM/Composer", GST_TAG_COMPOSER } */
3169 if (name_utf8 == NULL) {
3170 GST_WARNING ("Failed to convert name to UTF8, skipping");
3174 out = strlen (name_utf8);
3176 for (i = 0; i < G_N_ELEMENTS (tags); ++i) {
3177 if (strncmp (tags[i].asf_name, name_utf8, out) == 0) {
3178 GST_LOG ("map tagname '%s' -> '%s'", name_utf8, tags[i].gst_name);
3179 return tags[i].gst_name;
3186 /* gst_asf_demux_add_global_tags() takes ownership of taglist! */
3188 gst_asf_demux_add_global_tags (GstASFDemux * demux, GstTagList * taglist)
3192 GST_DEBUG_OBJECT (demux, "adding global tags: %" GST_PTR_FORMAT, taglist);
3194 if (taglist == NULL)
3197 if (gst_tag_list_is_empty (taglist)) {
3198 gst_tag_list_unref (taglist);
3202 t = gst_tag_list_merge (demux->taglist, taglist, GST_TAG_MERGE_APPEND);
3203 gst_tag_list_set_scope (t, GST_TAG_SCOPE_GLOBAL);
3205 gst_tag_list_unref (demux->taglist);
3206 gst_tag_list_unref (taglist);
3208 GST_LOG_OBJECT (demux, "global tags now: %" GST_PTR_FORMAT, demux->taglist);
3211 #define ASF_DEMUX_DATA_TYPE_UTF16LE_STRING 0
3212 #define ASF_DEMUX_DATA_TYPE_BYTE_ARRAY 1
3213 #define ASF_DEMUX_DATA_TYPE_BOOL 2
3214 #define ASF_DEMUX_DATA_TYPE_DWORD 3
3217 asf_demux_parse_picture_tag (GstTagList * tags, const guint8 * tag_data,
3221 const guint8 *img_data = NULL;
3222 guint32 img_data_len = 0;
3223 guint8 pic_type = 0;
3225 gst_byte_reader_init (&r, tag_data, tag_data_len);
3227 /* skip mime type string (we don't trust it and do our own typefinding),
3228 * and also skip the description string, since we don't use it */
3229 if (!gst_byte_reader_get_uint8 (&r, &pic_type) ||
3230 !gst_byte_reader_get_uint32_le (&r, &img_data_len) ||
3231 !gst_byte_reader_skip_string_utf16 (&r) ||
3232 !gst_byte_reader_skip_string_utf16 (&r) ||
3233 !gst_byte_reader_get_data (&r, img_data_len, &img_data)) {
3234 goto not_enough_data;
3238 if (!gst_tag_list_add_id3_image (tags, img_data, img_data_len, pic_type))
3239 GST_DEBUG ("failed to add image extracted from WM/Picture tag to taglist");
3245 GST_DEBUG ("Failed to read WM/Picture tag: not enough data");
3246 GST_MEMDUMP ("WM/Picture data", tag_data, tag_data_len);
3251 /* Extended Content Description Object */
3252 static GstFlowReturn
3253 gst_asf_demux_process_ext_content_desc (GstASFDemux * demux, guint8 * data,
3256 /* Other known (and unused) 'text/unicode' metadata available :
3259 * WM/MediaPrimaryClassID = {D1607DBC-E323-4BE2-86A1-48A42A28441E}
3260 * WMFSDKVersion = 9.00.00.2980
3261 * WMFSDKNeeded = 0.0.0.0000
3262 * WM/UniqueFileIdentifier = AMGa_id=R 15334;AMGp_id=P 5149;AMGt_id=T 2324984
3263 * WM/Publisher = 4AD
3265 * WM/ProviderRating = 8
3266 * WM/ProviderStyle = Rock (similar to WM/Genre)
3267 * WM/GenreID (similar to WM/Genre)
3268 * WM/TrackNumber (same as WM/Track but as a string)
3270 * Other known (and unused) 'non-text' metadata available :
3276 * We might want to read WM/TrackNumber and use atoi() if we don't have
3280 GstTagList *taglist;
3281 guint16 blockcount, i;
3282 gboolean content3D = FALSE;
3286 const gchar *interleave_name;
3287 GstASF3DMode interleaving_type;
3288 } stereoscopic_layout_map[] = {
3290 "SideBySideRF", GST_ASF_3D_SIDE_BY_SIDE_HALF_RL}, {
3291 "SideBySideLF", GST_ASF_3D_SIDE_BY_SIDE_HALF_LR}, {
3292 "OverUnderRT", GST_ASF_3D_TOP_AND_BOTTOM_HALF_RL}, {
3293 "OverUnderLT", GST_ASF_3D_TOP_AND_BOTTOM_HALF_LR}, {
3294 "DualStream", GST_ASF_3D_DUAL_STREAM}
3296 GST_INFO_OBJECT (demux, "object is an extended content description");
3298 taglist = gst_tag_list_new_empty ();
3300 /* Content Descriptor Count */
3302 goto not_enough_data;
3304 blockcount = gst_asf_demux_get_uint16 (&data, &size);
3306 for (i = 1; i <= blockcount; ++i) {
3307 const gchar *gst_tag_name;
3311 GValue tag_value = { 0, };
3314 gchar *name_utf8 = NULL;
3318 if (!gst_asf_demux_get_string (&name, &name_len, &data, &size))
3319 goto not_enough_data;
3323 goto not_enough_data;
3325 /* Descriptor Value Data Type */
3326 datatype = gst_asf_demux_get_uint16 (&data, &size);
3328 /* Descriptor Value (not really a string, but same thing reading-wise) */
3329 if (!gst_asf_demux_get_string (&value, &value_len, &data, &size)) {
3331 goto not_enough_data;
3335 g_convert (name, name_len, "UTF-8", "UTF-16LE", &in, &out, NULL);
3337 if (name_utf8 != NULL) {
3338 GST_DEBUG ("Found tag/metadata %s", name_utf8);
3340 gst_tag_name = gst_asf_demux_get_gst_tag_from_tag_name (name_utf8);
3341 GST_DEBUG ("gst_tag_name %s", GST_STR_NULL (gst_tag_name));
3344 case ASF_DEMUX_DATA_TYPE_UTF16LE_STRING:{
3347 value_utf8 = g_convert (value, value_len, "UTF-8", "UTF-16LE",
3350 /* get rid of tags with empty value */
3351 if (value_utf8 != NULL && *value_utf8 != '\0') {
3352 GST_DEBUG ("string value %s", value_utf8);
3354 value_utf8[out] = '\0';
3356 if (gst_tag_name != NULL) {
3357 if (strcmp (gst_tag_name, GST_TAG_DATE_TIME) == 0) {
3358 guint year = atoi (value_utf8);
3361 g_value_init (&tag_value, GST_TYPE_DATE_TIME);
3362 g_value_take_boxed (&tag_value, gst_date_time_new_y (year));
3364 } else if (strcmp (gst_tag_name, GST_TAG_GENRE) == 0) {
3365 guint id3v1_genre_id;
3366 const gchar *genre_str;
3368 if (sscanf (value_utf8, "(%u)", &id3v1_genre_id) == 1 &&
3369 ((genre_str = gst_tag_id3_genre_get (id3v1_genre_id)))) {
3370 GST_DEBUG ("Genre: %s -> %s", value_utf8, genre_str);
3371 g_free (value_utf8);
3372 value_utf8 = g_strdup (genre_str);
3377 /* convert tag from string to other type if required */
3378 tag_type = gst_tag_get_type (gst_tag_name);
3379 g_value_init (&tag_value, tag_type);
3380 if (!gst_value_deserialize (&tag_value, value_utf8)) {
3381 GValue from_val = { 0, };
3383 g_value_init (&from_val, G_TYPE_STRING);
3384 g_value_set_string (&from_val, value_utf8);
3385 if (!g_value_transform (&from_val, &tag_value)) {
3386 GST_WARNING_OBJECT (demux,
3387 "Could not transform string tag to " "%s tag type %s",
3388 gst_tag_name, g_type_name (tag_type));
3389 g_value_unset (&tag_value);
3391 g_value_unset (&from_val);
3396 GST_DEBUG ("Setting metadata");
3397 g_value_init (&tag_value, G_TYPE_STRING);
3398 g_value_set_string (&tag_value, value_utf8);
3399 /* If we found a stereoscopic marker, look for StereoscopicLayout
3403 if (strncmp ("StereoscopicLayout", name_utf8,
3404 strlen (name_utf8)) == 0) {
3405 for (i = 0; i < G_N_ELEMENTS (stereoscopic_layout_map); i++) {
3406 if (g_str_equal (stereoscopic_layout_map[i].interleave_name,
3408 demux->asf_3D_mode =
3409 stereoscopic_layout_map[i].interleaving_type;
3410 GST_INFO ("find interleave type %u", demux->asf_3D_mode);
3414 GST_INFO_OBJECT (demux, "3d type is %u", demux->asf_3D_mode);
3416 demux->asf_3D_mode = GST_ASF_3D_NONE;
3417 GST_INFO_OBJECT (demux, "None 3d type");
3420 } else if (value_utf8 == NULL) {
3421 GST_WARNING ("Failed to convert string value to UTF8, skipping");
3423 GST_DEBUG ("Skipping empty string value for %s",
3424 GST_STR_NULL (gst_tag_name));
3426 g_free (value_utf8);
3429 case ASF_DEMUX_DATA_TYPE_BYTE_ARRAY:{
3431 if (!g_str_equal (gst_tag_name, GST_TAG_IMAGE)) {
3432 GST_FIXME ("Unhandled byte array tag %s",
3433 GST_STR_NULL (gst_tag_name));
3436 asf_demux_parse_picture_tag (taglist, (guint8 *) value,
3442 case ASF_DEMUX_DATA_TYPE_DWORD:{
3443 guint uint_val = GST_READ_UINT32_LE (value);
3445 /* this is the track number */
3446 g_value_init (&tag_value, G_TYPE_UINT);
3448 /* WM/Track counts from 0 */
3449 if (!strcmp (name_utf8, "WM/Track"))
3452 g_value_set_uint (&tag_value, uint_val);
3456 case ASF_DEMUX_DATA_TYPE_BOOL:{
3457 gboolean bool_val = GST_READ_UINT32_LE (value);
3459 if (strncmp ("Stereoscopic", name_utf8, strlen (name_utf8)) == 0) {
3461 GST_INFO_OBJECT (demux, "This is 3D contents");
3464 GST_INFO_OBJECT (demux, "This is not 3D contenst");
3472 GST_DEBUG ("Skipping tag %s of type %d", gst_tag_name, datatype);
3477 if (G_IS_VALUE (&tag_value)) {
3479 GstTagMergeMode merge_mode = GST_TAG_MERGE_APPEND;
3481 /* WM/TrackNumber is more reliable than WM/Track, since the latter
3482 * is supposed to have a 0 base but is often wrongly written to start
3483 * from 1 as well, so prefer WM/TrackNumber when we have it: either
3484 * replace the value added earlier from WM/Track or put it first in
3485 * the list, so that it will get picked up by _get_uint() */
3486 if (strcmp (name_utf8, "WM/TrackNumber") == 0)
3487 merge_mode = GST_TAG_MERGE_REPLACE;
3489 gst_tag_list_add_values (taglist, merge_mode, gst_tag_name,
3492 GST_DEBUG ("Setting global metadata %s", name_utf8);
3493 gst_structure_set_value (demux->global_metadata, name_utf8,
3497 g_value_unset (&tag_value);
3506 gst_asf_demux_add_global_tags (demux, taglist);
3513 GST_WARNING ("Unexpected end of data parsing ext content desc object");
3514 gst_tag_list_unref (taglist);
3515 return GST_FLOW_OK; /* not really fatal */
3519 static GstStructure *
3520 gst_asf_demux_get_metadata_for_stream (GstASFDemux * demux, guint stream_num)
3525 g_snprintf (sname, sizeof (sname), "stream-%u", stream_num);
3527 for (i = 0; i < gst_caps_get_size (demux->metadata); ++i) {
3530 s = gst_caps_get_structure (demux->metadata, i);
3531 if (gst_structure_has_name (s, sname))
3535 gst_caps_append_structure (demux->metadata, gst_structure_new_empty (sname));
3537 /* try lookup again; demux->metadata took ownership of the structure, so we
3538 * can't really make any assumptions about what happened to it, so we can't
3539 * just return it directly after appending it */
3540 return gst_asf_demux_get_metadata_for_stream (demux, stream_num);
3543 static GstFlowReturn
3544 gst_asf_demux_process_metadata (GstASFDemux * demux, guint8 * data,
3547 guint16 blockcount, i;
3549 GST_INFO_OBJECT (demux, "object is a metadata object");
3551 /* Content Descriptor Count */
3553 goto not_enough_data;
3555 blockcount = gst_asf_demux_get_uint16 (&data, &size);
3557 for (i = 0; i < blockcount; ++i) {
3559 guint16 stream_num, name_len, data_type, lang_idx G_GNUC_UNUSED;
3560 guint32 data_len, ival;
3563 if (size < (2 + 2 + 2 + 2 + 4))
3564 goto not_enough_data;
3566 lang_idx = gst_asf_demux_get_uint16 (&data, &size);
3567 stream_num = gst_asf_demux_get_uint16 (&data, &size);
3568 name_len = gst_asf_demux_get_uint16 (&data, &size);
3569 data_type = gst_asf_demux_get_uint16 (&data, &size);
3570 data_len = gst_asf_demux_get_uint32 (&data, &size);
3572 if (size < name_len + data_len)
3573 goto not_enough_data;
3575 /* convert name to UTF-8 */
3576 name_utf8 = g_convert ((gchar *) data, name_len, "UTF-8", "UTF-16LE",
3578 gst_asf_demux_skip_bytes (name_len, &data, &size);
3580 if (name_utf8 == NULL) {
3581 GST_WARNING ("Failed to convert value name to UTF8, skipping");
3582 gst_asf_demux_skip_bytes (data_len, &data, &size);
3586 if (data_type != ASF_DEMUX_DATA_TYPE_DWORD) {
3587 gst_asf_demux_skip_bytes (data_len, &data, &size);
3595 goto not_enough_data;
3598 ival = gst_asf_demux_get_uint32 (&data, &size);
3600 /* skip anything else there may be, just in case */
3601 gst_asf_demux_skip_bytes (data_len - 4, &data, &size);
3603 s = gst_asf_demux_get_metadata_for_stream (demux, stream_num);
3604 gst_structure_set (s, name_utf8, G_TYPE_INT, ival, NULL);
3608 GST_INFO_OBJECT (demux, "metadata = %" GST_PTR_FORMAT, demux->metadata);
3614 GST_WARNING ("Unexpected end of data parsing metadata object");
3615 return GST_FLOW_OK; /* not really fatal */
3619 static GstFlowReturn
3620 gst_asf_demux_process_header (GstASFDemux * demux, guint8 * data, guint64 size)
3622 GstFlowReturn ret = GST_FLOW_OK;
3623 guint32 i, num_objects;
3624 guint8 unknown G_GNUC_UNUSED;
3626 /* Get the rest of the header's header */
3627 if (size < (4 + 1 + 1))
3628 goto not_enough_data;
3630 num_objects = gst_asf_demux_get_uint32 (&data, &size);
3631 unknown = gst_asf_demux_get_uint8 (&data, &size);
3632 unknown = gst_asf_demux_get_uint8 (&data, &size);
3634 GST_INFO_OBJECT (demux, "object is a header with %u parts", num_objects);
3635 demux->saw_file_header = FALSE;
3636 /* Loop through the header's objects, processing those */
3637 for (i = 0; i < num_objects; ++i) {
3638 GST_INFO_OBJECT (demux, "reading header part %u", i);
3639 ret = gst_asf_demux_process_object (demux, &data, &size);
3640 if (ret != GST_FLOW_OK) {
3641 GST_WARNING ("process_object returned %s", gst_asf_get_flow_name (ret));
3645 if (!demux->saw_file_header) {
3646 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
3647 ("Header does not have mandatory FILE section"));
3648 return GST_FLOW_ERROR;
3655 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
3656 ("short read parsing HEADER object"));
3657 return GST_FLOW_ERROR;
3661 static GstFlowReturn
3662 gst_asf_demux_process_file (GstASFDemux * demux, guint8 * data, guint64 size)
3664 guint64 creation_time G_GNUC_UNUSED;
3665 guint64 file_size G_GNUC_UNUSED;
3666 guint64 send_time G_GNUC_UNUSED;
3667 guint64 packets_count, play_time, preroll;
3668 guint32 flags, min_pktsize, max_pktsize, min_bitrate G_GNUC_UNUSED;
3670 if (size < (16 + 8 + 8 + 8 + 8 + 8 + 8 + 4 + 4 + 4 + 4))
3671 goto not_enough_data;
3673 gst_asf_demux_skip_bytes (16, &data, &size); /* skip GUID */
3674 file_size = gst_asf_demux_get_uint64 (&data, &size);
3675 creation_time = gst_asf_demux_get_uint64 (&data, &size);
3676 packets_count = gst_asf_demux_get_uint64 (&data, &size);
3677 play_time = gst_asf_demux_get_uint64 (&data, &size);
3678 send_time = gst_asf_demux_get_uint64 (&data, &size);
3679 preroll = gst_asf_demux_get_uint64 (&data, &size);
3680 flags = gst_asf_demux_get_uint32 (&data, &size);
3681 min_pktsize = gst_asf_demux_get_uint32 (&data, &size);
3682 max_pktsize = gst_asf_demux_get_uint32 (&data, &size);
3683 min_bitrate = gst_asf_demux_get_uint32 (&data, &size);
3685 demux->broadcast = ! !(flags & 0x01);
3686 demux->seekable = ! !(flags & 0x02);
3688 GST_DEBUG_OBJECT (demux, "min_pktsize = %u", min_pktsize);
3689 GST_DEBUG_OBJECT (demux, "flags::broadcast = %d", demux->broadcast);
3690 GST_DEBUG_OBJECT (demux, "flags::seekable = %d", demux->seekable);
3692 if (demux->broadcast) {
3693 /* these fields are invalid if the broadcast flag is set */
3698 if (min_pktsize != max_pktsize)
3699 goto non_fixed_packet_size;
3701 demux->packet_size = max_pktsize;
3703 /* FIXME: do we need send_time as well? what is it? */
3704 if ((play_time * 100) >= (preroll * GST_MSECOND))
3705 demux->play_time = (play_time * 100) - (preroll * GST_MSECOND);
3707 demux->play_time = 0;
3709 demux->preroll = preroll * GST_MSECOND;
3711 /* initial latency */
3712 demux->latency = demux->preroll;
3714 if (demux->play_time == 0)
3715 demux->seekable = FALSE;
3717 GST_DEBUG_OBJECT (demux, "play_time %" GST_TIME_FORMAT,
3718 GST_TIME_ARGS (demux->play_time));
3719 GST_DEBUG_OBJECT (demux, "preroll %" GST_TIME_FORMAT,
3720 GST_TIME_ARGS (demux->preroll));
3722 if (demux->play_time > 0) {
3723 demux->segment.duration = demux->play_time;
3726 GST_INFO ("object is a file with %" G_GUINT64_FORMAT " data packets",
3728 GST_INFO ("preroll = %" G_GUINT64_FORMAT, demux->preroll);
3730 demux->saw_file_header = TRUE;
3735 non_fixed_packet_size:
3737 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
3738 ("packet size must be fixed"));
3739 return GST_FLOW_ERROR;
3743 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
3744 ("short read parsing FILE object"));
3745 return GST_FLOW_ERROR;
3749 /* Content Description Object */
3750 static GstFlowReturn
3751 gst_asf_demux_process_comment (GstASFDemux * demux, guint8 * data, guint64 size)
3755 const gchar *gst_tag;
3760 GST_TAG_TITLE, 0, NULL}, {
3761 GST_TAG_ARTIST, 0, NULL}, {
3762 GST_TAG_COPYRIGHT, 0, NULL}, {
3763 GST_TAG_DESCRIPTION, 0, NULL}, {
3764 GST_TAG_COMMENT, 0, NULL}
3766 GstTagList *taglist;
3767 GValue value = { 0 };
3771 GST_INFO_OBJECT (demux, "object is a comment");
3773 if (size < (2 + 2 + 2 + 2 + 2))
3774 goto not_enough_data;
3776 tags[0].val_length = gst_asf_demux_get_uint16 (&data, &size);
3777 tags[1].val_length = gst_asf_demux_get_uint16 (&data, &size);
3778 tags[2].val_length = gst_asf_demux_get_uint16 (&data, &size);
3779 tags[3].val_length = gst_asf_demux_get_uint16 (&data, &size);
3780 tags[4].val_length = gst_asf_demux_get_uint16 (&data, &size);
3782 GST_DEBUG_OBJECT (demux, "Comment lengths: title=%d author=%d copyright=%d "
3783 "description=%d rating=%d", tags[0].val_length, tags[1].val_length,
3784 tags[2].val_length, tags[3].val_length, tags[4].val_length);
3786 for (i = 0; i < G_N_ELEMENTS (tags); ++i) {
3787 if (size < tags[i].val_length)
3788 goto not_enough_data;
3790 /* might be just '/0', '/0'... */
3791 if (tags[i].val_length > 2 && tags[i].val_length % 2 == 0) {
3792 /* convert to UTF-8 */
3793 tags[i].val_utf8 = g_convert ((gchar *) data, tags[i].val_length,
3794 "UTF-8", "UTF-16LE", &in, &out, NULL);
3796 gst_asf_demux_skip_bytes (tags[i].val_length, &data, &size);
3799 /* parse metadata into taglist */
3800 taglist = gst_tag_list_new_empty ();
3801 g_value_init (&value, G_TYPE_STRING);
3802 for (i = 0; i < G_N_ELEMENTS (tags); ++i) {
3803 if (tags[i].val_utf8 && strlen (tags[i].val_utf8) > 0 && tags[i].gst_tag) {
3804 g_value_set_string (&value, tags[i].val_utf8);
3805 gst_tag_list_add_values (taglist, GST_TAG_MERGE_APPEND,
3806 tags[i].gst_tag, &value, NULL);
3809 g_value_unset (&value);
3811 gst_asf_demux_add_global_tags (demux, taglist);
3813 for (i = 0; i < G_N_ELEMENTS (tags); ++i)
3814 g_free (tags[i].val_utf8);
3820 GST_WARNING_OBJECT (demux, "unexpectedly short of data while processing "
3821 "comment tag section %d, skipping comment object", i);
3822 for (i = 0; i < G_N_ELEMENTS (tags); i++)
3823 g_free (tags[i].val_utf8);
3824 return GST_FLOW_OK; /* not really fatal */
3828 static GstFlowReturn
3829 gst_asf_demux_process_bitrate_props_object (GstASFDemux * demux, guint8 * data,
3832 guint16 num_streams, i;
3836 goto not_enough_data;
3838 num_streams = gst_asf_demux_get_uint16 (&data, &size);
3840 GST_INFO ("object is a bitrate properties object with %u streams",
3843 if (size < (num_streams * (2 + 4)))
3844 goto not_enough_data;
3846 for (i = 0; i < num_streams; ++i) {
3850 stream_id = gst_asf_demux_get_uint16 (&data, &size);
3851 bitrate = gst_asf_demux_get_uint32 (&data, &size);
3853 if (stream_id < GST_ASF_DEMUX_NUM_STREAM_IDS) {
3854 GST_DEBUG_OBJECT (demux, "bitrate of stream %u = %u", stream_id, bitrate);
3855 stream = gst_asf_demux_get_stream (demux, stream_id);
3857 if (stream->pending_tags == NULL)
3858 stream->pending_tags = gst_tag_list_new_empty ();
3859 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
3860 GST_TAG_BITRATE, bitrate, NULL);
3862 GST_WARNING_OBJECT (demux, "Stream id %u wasn't found", stream_id);
3865 GST_WARNING ("stream id %u is too large", stream_id);
3873 GST_WARNING_OBJECT (demux, "short read parsing bitrate props object!");
3874 return GST_FLOW_OK; /* not really fatal */
3878 static GstFlowReturn
3879 gst_asf_demux_process_header_ext (GstASFDemux * demux, guint8 * data,
3882 GstFlowReturn ret = GST_FLOW_OK;
3885 /* Get the rest of the header's header */
3886 if (size < (16 + 2 + 4))
3887 goto not_enough_data;
3889 /* skip GUID and two other bytes */
3890 gst_asf_demux_skip_bytes (16 + 2, &data, &size);
3891 hdr_size = gst_asf_demux_get_uint32 (&data, &size);
3893 GST_INFO ("extended header object with a size of %u bytes", (guint) size);
3895 /* FIXME: does data_size include the rest of the header that we have read? */
3896 if (hdr_size > size)
3897 goto not_enough_data;
3899 while (hdr_size > 0) {
3900 ret = gst_asf_demux_process_object (demux, &data, &hdr_size);
3901 if (ret != GST_FLOW_OK)
3909 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
3910 ("short read parsing extended header object"));
3911 return GST_FLOW_ERROR;
3915 static GstFlowReturn
3916 gst_asf_demux_process_language_list (GstASFDemux * demux, guint8 * data,
3922 goto not_enough_data;
3924 if (demux->languages) {
3925 GST_WARNING ("More than one LANGUAGE_LIST object in stream");
3926 g_strfreev (demux->languages);
3927 demux->languages = NULL;
3928 demux->num_languages = 0;
3931 demux->num_languages = gst_asf_demux_get_uint16 (&data, &size);
3932 GST_LOG ("%u languages:", demux->num_languages);
3934 demux->languages = g_new0 (gchar *, demux->num_languages + 1);
3935 for (i = 0; i < demux->num_languages; ++i) {
3936 guint8 len, *lang_data = NULL;
3939 goto not_enough_data;
3940 len = gst_asf_demux_get_uint8 (&data, &size);
3941 if (gst_asf_demux_get_bytes (&lang_data, len, &data, &size)) {
3944 utf8 = g_convert ((gchar *) lang_data, len, "UTF-8", "UTF-16LE", NULL,
3947 /* truncate "en-us" etc. to just "en" */
3948 if (utf8 && strlen (utf8) >= 5 && (utf8[2] == '-' || utf8[2] == '_')) {
3951 GST_DEBUG ("[%u] %s", i, GST_STR_NULL (utf8));
3952 demux->languages[i] = utf8;
3955 goto not_enough_data;
3963 GST_WARNING_OBJECT (demux, "short read parsing language list object!");
3964 g_free (demux->languages);
3965 demux->languages = NULL;
3966 return GST_FLOW_OK; /* not fatal */
3970 static GstFlowReturn
3971 gst_asf_demux_process_simple_index (GstASFDemux * demux, guint8 * data,
3974 GstClockTime interval;
3977 if (size < (16 + 8 + 4 + 4))
3978 goto not_enough_data;
3981 gst_asf_demux_skip_bytes (16, &data, &size);
3982 interval = gst_asf_demux_get_uint64 (&data, &size) * (GstClockTime) 100;
3983 gst_asf_demux_skip_bytes (4, &data, &size);
3984 count = gst_asf_demux_get_uint32 (&data, &size);
3986 demux->sidx_interval = interval;
3987 demux->sidx_num_entries = count;
3988 g_free (demux->sidx_entries);
3989 demux->sidx_entries = g_new0 (AsfSimpleIndexEntry, count);
3991 for (i = 0; i < count; ++i) {
3992 if (G_UNLIKELY (size < 6)) {
3993 /* adjust for broken files, to avoid having entries at the end
3994 * of the parsed index that point to time=0. Resulting in seeking to
3995 * the end of the file leading back to the beginning */
3996 demux->sidx_num_entries -= (count - i);
3999 demux->sidx_entries[i].packet = gst_asf_demux_get_uint32 (&data, &size);
4000 demux->sidx_entries[i].count = gst_asf_demux_get_uint16 (&data, &size);
4001 GST_LOG_OBJECT (demux, "%" GST_TIME_FORMAT " = packet %4u count : %2d",
4002 GST_TIME_ARGS (i * interval), demux->sidx_entries[i].packet,
4003 demux->sidx_entries[i].count);
4006 GST_DEBUG_OBJECT (demux, "simple index object with 0 entries");
4013 GST_WARNING_OBJECT (demux, "short read parsing simple index object!");
4014 return GST_FLOW_OK; /* not fatal */
4018 static GstFlowReturn
4019 gst_asf_demux_process_advanced_mutual_exclusion (GstASFDemux * demux,
4020 guint8 * data, guint64 size)
4025 if (size < 16 + 2 + (2 * 2))
4026 goto not_enough_data;
4028 gst_asf_demux_get_guid (&guid, &data, &size);
4029 num = gst_asf_demux_get_uint16 (&data, &size);
4032 GST_WARNING_OBJECT (demux, "nonsensical mutually exclusive streams count");
4036 if (size < (num * sizeof (guint16)))
4037 goto not_enough_data;
4039 /* read mutually exclusive stream numbers */
4040 for (i = 0; i < num; ++i) {
4042 mes = gst_asf_demux_get_uint16 (&data, &size) & 0x7f;
4043 GST_LOG_OBJECT (demux, "mutually exclusive: stream %d", mes);
4045 demux->mut_ex_streams =
4046 g_slist_append (demux->mut_ex_streams, GINT_TO_POINTER (mes));
4055 GST_WARNING_OBJECT (demux, "short read parsing advanced mutual exclusion");
4056 return GST_FLOW_OK; /* not absolutely fatal */
4061 gst_asf_demux_is_unknown_stream (GstASFDemux * demux, guint stream_num)
4063 return g_slist_find (demux->other_streams,
4064 GINT_TO_POINTER (stream_num)) == NULL;
4067 static GstFlowReturn
4068 gst_asf_demux_process_ext_stream_props (GstASFDemux * demux, guint8 * data,
4071 AsfStreamExtProps esp;
4072 AsfStream *stream = NULL;
4073 AsfObject stream_obj;
4074 guint16 stream_name_count;
4075 guint16 num_payload_ext;
4077 guint8 *stream_obj_data = NULL;
4080 guint i, stream_num;
4083 obj_size = (guint) size;
4086 goto not_enough_data;
4089 esp.start_time = gst_asf_demux_get_uint64 (&data, &size) * GST_MSECOND;
4090 esp.end_time = gst_asf_demux_get_uint64 (&data, &size) * GST_MSECOND;
4091 esp.data_bitrate = gst_asf_demux_get_uint32 (&data, &size);
4092 esp.buffer_size = gst_asf_demux_get_uint32 (&data, &size);
4093 esp.intial_buf_fullness = gst_asf_demux_get_uint32 (&data, &size);
4094 esp.data_bitrate2 = gst_asf_demux_get_uint32 (&data, &size);
4095 esp.buffer_size2 = gst_asf_demux_get_uint32 (&data, &size);
4096 esp.intial_buf_fullness2 = gst_asf_demux_get_uint32 (&data, &size);
4097 esp.max_obj_size = gst_asf_demux_get_uint32 (&data, &size);
4098 esp.flags = gst_asf_demux_get_uint32 (&data, &size);
4099 stream_num = gst_asf_demux_get_uint16 (&data, &size);
4100 esp.lang_idx = gst_asf_demux_get_uint16 (&data, &size);
4101 esp.avg_time_per_frame = gst_asf_demux_get_uint64 (&data, &size);
4102 stream_name_count = gst_asf_demux_get_uint16 (&data, &size);
4103 num_payload_ext = gst_asf_demux_get_uint16 (&data, &size);
4105 GST_INFO ("start_time = %" GST_TIME_FORMAT,
4106 GST_TIME_ARGS (esp.start_time));
4107 GST_INFO ("end_time = %" GST_TIME_FORMAT,
4108 GST_TIME_ARGS (esp.end_time));
4109 GST_INFO ("flags = %08x", esp.flags);
4110 GST_INFO ("average time per frame = %" GST_TIME_FORMAT,
4111 GST_TIME_ARGS (esp.avg_time_per_frame * 100));
4112 GST_INFO ("stream number = %u", stream_num);
4113 GST_INFO ("stream language ID idx = %u (%s)", esp.lang_idx,
4114 (esp.lang_idx < demux->num_languages) ?
4115 GST_STR_NULL (demux->languages[esp.lang_idx]) : "??");
4116 GST_INFO ("stream name count = %u", stream_name_count);
4118 /* read stream names */
4119 for (i = 0; i < stream_name_count; ++i) {
4120 guint16 stream_lang_idx G_GNUC_UNUSED;
4121 gchar *stream_name = NULL;
4124 goto not_enough_data;
4125 stream_lang_idx = gst_asf_demux_get_uint16 (&data, &size);
4126 if (!gst_asf_demux_get_string (&stream_name, NULL, &data, &size))
4127 goto not_enough_data;
4128 GST_INFO ("stream name %d: %s", i, GST_STR_NULL (stream_name));
4129 g_free (stream_name); /* TODO: store names in struct */
4132 /* read payload extension systems stuff */
4133 GST_LOG ("payload extension systems count = %u", num_payload_ext);
4135 if (num_payload_ext > 0)
4136 esp.payload_extensions = g_new0 (AsfPayloadExtension, num_payload_ext + 1);
4138 esp.payload_extensions = NULL;
4140 for (i = 0; i < num_payload_ext; ++i) {
4141 AsfPayloadExtension ext;
4143 guint32 sys_info_len;
4145 if (size < 16 + 2 + 4)
4146 goto not_enough_data;
4148 gst_asf_demux_get_guid (&ext_guid, &data, &size);
4149 ext.id = gst_asf_demux_identify_guid (asf_payload_ext_guids, &ext_guid);
4150 ext.len = gst_asf_demux_get_uint16 (&data, &size);
4152 sys_info_len = gst_asf_demux_get_uint32 (&data, &size);
4153 GST_LOG ("payload systems info len = %u", sys_info_len);
4154 if (!gst_asf_demux_skip_bytes (sys_info_len, &data, &size))
4155 goto not_enough_data;
4157 esp.payload_extensions[i] = ext;
4160 GST_LOG ("bytes read: %u/%u", (guint) (data - data_start), obj_size);
4162 /* there might be an optional STREAM_INFO object here now; if not, we
4163 * should have parsed the corresponding stream info object already (since
4164 * we are parsing the extended stream properties objects delayed) */
4166 stream = gst_asf_demux_get_stream (demux, stream_num);
4170 if (size < ASF_OBJECT_HEADER_SIZE)
4171 goto not_enough_data;
4173 /* get size of the stream object */
4174 if (!asf_demux_peek_object (demux, data, size, &stream_obj, TRUE))
4175 goto corrupted_stream;
4177 if (stream_obj.id != ASF_OBJ_STREAM)
4178 goto expected_stream_object;
4180 if (stream_obj.size < ASF_OBJECT_HEADER_SIZE ||
4181 stream_obj.size > (10 * 1024 * 1024))
4182 goto not_enough_data;
4184 gst_asf_demux_skip_bytes (ASF_OBJECT_HEADER_SIZE, &data, &size);
4186 /* process this stream object later after all the other 'normal' ones
4187 * have been processed (since the others are more important/non-hidden) */
4188 len = stream_obj.size - ASF_OBJECT_HEADER_SIZE;
4189 if (!gst_asf_demux_get_bytes (&stream_obj_data, len, &data, &size))
4190 goto not_enough_data;
4192 /* parse stream object */
4193 stream = gst_asf_demux_parse_stream_object (demux, stream_obj_data, len);
4194 g_free (stream_obj_data);
4199 stream->ext_props = esp;
4201 /* try to set the framerate */
4202 if (stream->is_video && stream->caps) {
4203 GValue framerate = { 0 };
4207 g_value_init (&framerate, GST_TYPE_FRACTION);
4209 num = GST_SECOND / 100;
4210 denom = esp.avg_time_per_frame;
4212 /* avoid division by 0, assume 25/1 framerate */
4213 denom = GST_SECOND / 2500;
4216 gst_value_set_fraction (&framerate, num, denom);
4218 stream->caps = gst_caps_make_writable (stream->caps);
4219 s = gst_caps_get_structure (stream->caps, 0);
4220 gst_structure_set_value (s, "framerate", &framerate);
4221 g_value_unset (&framerate);
4222 GST_DEBUG_OBJECT (demux, "setting framerate of %d/%d = %f",
4223 num, denom, ((gdouble) num) / denom);
4226 /* add language info now if we have it */
4227 if (stream->ext_props.lang_idx < demux->num_languages) {
4228 if (stream->pending_tags == NULL)
4229 stream->pending_tags = gst_tag_list_new_empty ();
4230 GST_LOG_OBJECT (demux, "stream %u has language '%s'", stream->id,
4231 demux->languages[stream->ext_props.lang_idx]);
4232 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_APPEND,
4233 GST_TAG_LANGUAGE_CODE, demux->languages[stream->ext_props.lang_idx],
4236 } else if (gst_asf_demux_is_unknown_stream (demux, stream_num)) {
4237 GST_WARNING_OBJECT (demux, "Ext. stream properties for unknown stream");
4245 GST_WARNING_OBJECT (demux, "short read parsing ext stream props object!");
4246 return GST_FLOW_OK; /* not absolutely fatal */
4248 expected_stream_object:
4250 GST_WARNING_OBJECT (demux, "error parsing extended stream properties "
4251 "object: expected embedded stream object, but got %s object instead!",
4252 gst_asf_get_guid_nick (asf_object_guids, stream_obj.id));
4253 return GST_FLOW_OK; /* not absolutely fatal */
4257 GST_WARNING_OBJECT (demux, "Corrupted stream");
4258 return GST_FLOW_ERROR;
4262 static const gchar *
4263 gst_asf_demux_push_obj (GstASFDemux * demux, guint32 obj_id)
4267 nick = gst_asf_get_guid_nick (asf_object_guids, obj_id);
4268 if (g_str_has_prefix (nick, "ASF_OBJ_"))
4269 nick += strlen ("ASF_OBJ_");
4271 if (demux->objpath == NULL) {
4272 demux->objpath = g_strdup (nick);
4276 newpath = g_strdup_printf ("%s/%s", demux->objpath, nick);
4277 g_free (demux->objpath);
4278 demux->objpath = newpath;
4281 return (const gchar *) demux->objpath;
4285 gst_asf_demux_pop_obj (GstASFDemux * demux)
4289 if ((s = g_strrstr (demux->objpath, "/"))) {
4292 g_free (demux->objpath);
4293 demux->objpath = NULL;
4298 gst_asf_demux_process_queued_extended_stream_objects (GstASFDemux * demux)
4303 /* Parse the queued extended stream property objects and add the info
4304 * to the existing streams or add the new embedded streams, but without
4305 * activating them yet */
4306 GST_LOG_OBJECT (demux, "%u queued extended stream properties objects",
4307 g_slist_length (demux->ext_stream_props));
4309 for (l = demux->ext_stream_props, i = 0; l != NULL; l = l->next, ++i) {
4310 GstBuffer *buf = GST_BUFFER (l->data);
4313 gst_buffer_map (buf, &map, GST_MAP_READ);
4315 GST_LOG_OBJECT (demux, "parsing ext. stream properties object #%u", i);
4316 gst_asf_demux_process_ext_stream_props (demux, map.data, map.size);
4317 gst_buffer_unmap (buf, &map);
4318 gst_buffer_unref (buf);
4320 g_slist_free (demux->ext_stream_props);
4321 demux->ext_stream_props = NULL;
4326 gst_asf_demux_activate_ext_props_streams (GstASFDemux * demux)
4330 for (i = 0; i < demux->num_streams; ++i) {
4335 stream = &demux->stream[i];
4337 GST_LOG_OBJECT (demux, "checking stream %2u", stream->id);
4339 if (stream->active) {
4340 GST_LOG_OBJECT (demux, "stream %2u is already activated", stream->id);
4345 for (x = demux->mut_ex_streams; x != NULL; x = x->next) {
4348 /* check for each mutual exclusion whether it affects this stream */
4349 for (mes = (guint8 *) x->data; mes != NULL && *mes != 0xff; ++mes) {
4350 if (*mes == stream->id) {
4351 /* if yes, check if we've already added streams that are mutually
4352 * exclusive with the stream we're about to add */
4353 for (mes = (guint8 *) x->data; mes != NULL && *mes != 0xff; ++mes) {
4354 for (j = 0; j < demux->num_streams; ++j) {
4355 /* if the broadcast flag is set, assume the hidden streams aren't
4356 * actually streamed and hide them (or playbin won't work right),
4357 * otherwise assume their data is available */
4358 if (demux->stream[j].id == *mes && demux->broadcast) {
4360 GST_LOG_OBJECT (demux, "broadcast stream ID %d to be added is "
4361 "mutually exclusive with already existing stream ID %d, "
4362 "hiding stream", stream->id, demux->stream[j].id);
4374 /* FIXME: we should do stream activation based on preroll data in
4375 * streaming mode too */
4376 if (demux->streaming && !is_hidden)
4377 gst_asf_demux_activate_stream (demux, stream);
4382 static GstFlowReturn
4383 gst_asf_demux_process_object (GstASFDemux * demux, guint8 ** p_data,
4386 GstFlowReturn ret = GST_FLOW_OK;
4388 guint64 obj_data_size;
4390 if (*p_size < ASF_OBJECT_HEADER_SIZE)
4391 return ASF_FLOW_NEED_MORE_DATA;
4393 if (!asf_demux_peek_object (demux, *p_data, ASF_OBJECT_HEADER_SIZE, &obj,
4395 return GST_FLOW_ERROR;
4396 gst_asf_demux_skip_bytes (ASF_OBJECT_HEADER_SIZE, p_data, p_size);
4398 obj_data_size = obj.size - ASF_OBJECT_HEADER_SIZE;
4400 if (*p_size < obj_data_size)
4401 return ASF_FLOW_NEED_MORE_DATA;
4403 gst_asf_demux_push_obj (demux, obj.id);
4405 GST_INFO ("%s: size %u", demux->objpath, obj.size);
4408 case ASF_OBJ_STREAM:
4409 gst_asf_demux_parse_stream_object (demux, *p_data, obj_data_size);
4413 ret = gst_asf_demux_process_file (demux, *p_data, obj_data_size);
4415 case ASF_OBJ_HEADER:
4416 ret = gst_asf_demux_process_header (demux, *p_data, obj_data_size);
4418 case ASF_OBJ_COMMENT:
4419 ret = gst_asf_demux_process_comment (demux, *p_data, obj_data_size);
4422 ret = gst_asf_demux_process_header_ext (demux, *p_data, obj_data_size);
4424 case ASF_OBJ_BITRATE_PROPS:
4426 gst_asf_demux_process_bitrate_props_object (demux, *p_data,
4429 case ASF_OBJ_EXT_CONTENT_DESC:
4431 gst_asf_demux_process_ext_content_desc (demux, *p_data,
4434 case ASF_OBJ_METADATA_OBJECT:
4435 ret = gst_asf_demux_process_metadata (demux, *p_data, obj_data_size);
4437 case ASF_OBJ_EXTENDED_STREAM_PROPS:{
4440 /* process these later, we might not have parsed the corresponding
4441 * stream object yet */
4442 GST_LOG ("%s: queued for later parsing", demux->objpath);
4443 buf = gst_buffer_new_and_alloc (obj_data_size);
4444 gst_buffer_fill (buf, 0, *p_data, obj_data_size);
4445 demux->ext_stream_props = g_slist_append (demux->ext_stream_props, buf);
4449 case ASF_OBJ_LANGUAGE_LIST:
4450 ret = gst_asf_demux_process_language_list (demux, *p_data, obj_data_size);
4452 case ASF_OBJ_ADVANCED_MUTUAL_EXCLUSION:
4453 ret = gst_asf_demux_process_advanced_mutual_exclusion (demux, *p_data,
4456 case ASF_OBJ_SIMPLE_INDEX:
4457 ret = gst_asf_demux_process_simple_index (demux, *p_data, obj_data_size);
4459 case ASF_OBJ_CONTENT_ENCRYPTION:
4460 case ASF_OBJ_EXT_CONTENT_ENCRYPTION:
4461 case ASF_OBJ_DIGITAL_SIGNATURE_OBJECT:
4462 case ASF_OBJ_UNKNOWN_ENCRYPTION_OBJECT:
4463 goto error_encrypted;
4464 case ASF_OBJ_CONCEAL_NONE:
4466 case ASF_OBJ_UNDEFINED:
4467 case ASF_OBJ_CODEC_COMMENT:
4469 case ASF_OBJ_PADDING:
4470 case ASF_OBJ_BITRATE_MUTEX:
4471 case ASF_OBJ_COMPATIBILITY:
4472 case ASF_OBJ_INDEX_PLACEHOLDER:
4473 case ASF_OBJ_INDEX_PARAMETERS:
4474 case ASF_OBJ_STREAM_PRIORITIZATION:
4475 case ASF_OBJ_SCRIPT_COMMAND:
4476 case ASF_OBJ_METADATA_LIBRARY_OBJECT:
4478 /* Unknown/unhandled object, skip it and hope for the best */
4479 GST_INFO ("%s: skipping object", demux->objpath);
4484 /* this can't fail, we checked the number of bytes available before */
4485 gst_asf_demux_skip_bytes (obj_data_size, p_data, p_size);
4487 GST_LOG ("%s: ret = %s", demux->objpath, gst_asf_get_flow_name (ret));
4489 gst_asf_demux_pop_obj (demux);
4496 GST_ELEMENT_ERROR (demux, STREAM, DECRYPT, (NULL), (NULL));
4497 return GST_FLOW_ERROR;
4502 gst_asf_demux_descramble_buffer (GstASFDemux * demux, AsfStream * stream,
4503 GstBuffer ** p_buffer)
4505 GstBuffer *descrambled_buffer;
4506 GstBuffer *scrambled_buffer;
4507 GstBuffer *sub_buffer;
4514 /* descrambled_buffer is initialised in the first iteration */
4515 descrambled_buffer = NULL;
4516 scrambled_buffer = *p_buffer;
4518 if (gst_buffer_get_size (scrambled_buffer) <
4519 stream->ds_packet_size * stream->span)
4522 for (offset = 0; offset < gst_buffer_get_size (scrambled_buffer);
4523 offset += stream->ds_chunk_size) {
4524 off = offset / stream->ds_chunk_size;
4525 row = off / stream->span;
4526 col = off % stream->span;
4527 idx = row + col * stream->ds_packet_size / stream->ds_chunk_size;
4528 GST_DEBUG ("idx=%u, row=%u, col=%u, off=%u, ds_chunk_size=%u", idx, row,
4529 col, off, stream->ds_chunk_size);
4530 GST_DEBUG ("scrambled buffer size=%" G_GSIZE_FORMAT
4531 ", span=%u, packet_size=%u", gst_buffer_get_size (scrambled_buffer),
4532 stream->span, stream->ds_packet_size);
4533 GST_DEBUG ("gst_buffer_get_size (scrambled_buffer) = %" G_GSIZE_FORMAT,
4534 gst_buffer_get_size (scrambled_buffer));
4536 gst_buffer_copy_region (scrambled_buffer, GST_BUFFER_COPY_MEMORY,
4537 idx * stream->ds_chunk_size, stream->ds_chunk_size);
4539 descrambled_buffer = sub_buffer;
4541 descrambled_buffer = gst_buffer_append (descrambled_buffer, sub_buffer);
4545 GST_BUFFER_TIMESTAMP (descrambled_buffer) =
4546 GST_BUFFER_TIMESTAMP (scrambled_buffer);
4547 GST_BUFFER_DURATION (descrambled_buffer) =
4548 GST_BUFFER_DURATION (scrambled_buffer);
4549 GST_BUFFER_OFFSET (descrambled_buffer) = GST_BUFFER_OFFSET (scrambled_buffer);
4550 GST_BUFFER_OFFSET_END (descrambled_buffer) =
4551 GST_BUFFER_OFFSET_END (scrambled_buffer);
4553 /* FIXME/CHECK: do we need to transfer buffer flags here too? */
4555 gst_buffer_unref (scrambled_buffer);
4556 *p_buffer = descrambled_buffer;
4560 gst_asf_demux_element_send_event (GstElement * element, GstEvent * event)
4562 GstASFDemux *demux = GST_ASF_DEMUX (element);
4565 GST_DEBUG ("handling element event of type %s", GST_EVENT_TYPE_NAME (event));
4567 for (i = 0; i < demux->num_streams; ++i) {
4568 gst_event_ref (event);
4569 if (gst_asf_demux_handle_src_event (demux->stream[i].pad,
4570 GST_OBJECT_CAST (element), event)) {
4571 gst_event_unref (event);
4576 gst_event_unref (event);
4580 /* takes ownership of the passed event */
4582 gst_asf_demux_send_event_unlocked (GstASFDemux * demux, GstEvent * event)
4584 gboolean ret = TRUE;
4587 GST_DEBUG_OBJECT (demux, "sending %s event to all source pads",
4588 GST_EVENT_TYPE_NAME (event));
4590 for (i = 0; i < demux->num_streams; ++i) {
4591 gst_event_ref (event);
4592 ret &= gst_pad_push_event (demux->stream[i].pad, event);
4594 gst_event_unref (event);
4599 gst_asf_demux_handle_src_query (GstPad * pad, GstObject * parent,
4603 gboolean res = FALSE;
4605 demux = GST_ASF_DEMUX (parent);
4607 GST_DEBUG ("handling %s query",
4608 gst_query_type_get_name (GST_QUERY_TYPE (query)));
4610 switch (GST_QUERY_TYPE (query)) {
4611 case GST_QUERY_DURATION:
4615 gst_query_parse_duration (query, &format, NULL);
4617 if (format != GST_FORMAT_TIME) {
4618 GST_LOG ("only support duration queries in TIME format");
4622 res = gst_pad_query_default (pad, parent, query);
4624 GST_OBJECT_LOCK (demux);
4626 if (demux->segment.duration != GST_CLOCK_TIME_NONE) {
4627 GST_LOG ("returning duration: %" GST_TIME_FORMAT,
4628 GST_TIME_ARGS (demux->segment.duration));
4630 gst_query_set_duration (query, GST_FORMAT_TIME,
4631 demux->segment.duration);
4635 GST_LOG ("duration not known yet");
4638 GST_OBJECT_UNLOCK (demux);
4643 case GST_QUERY_POSITION:{
4646 gst_query_parse_position (query, &format, NULL);
4648 if (format != GST_FORMAT_TIME) {
4649 GST_LOG ("only support position queries in TIME format");
4653 GST_OBJECT_LOCK (demux);
4655 if (demux->segment.position != GST_CLOCK_TIME_NONE) {
4656 GST_LOG ("returning position: %" GST_TIME_FORMAT,
4657 GST_TIME_ARGS (demux->segment.position));
4659 gst_query_set_position (query, GST_FORMAT_TIME,
4660 demux->segment.position);
4664 GST_LOG ("position not known yet");
4667 GST_OBJECT_UNLOCK (demux);
4671 case GST_QUERY_SEEKING:{
4674 gst_query_parse_seeking (query, &format, NULL, NULL, NULL);
4675 if (format == GST_FORMAT_TIME) {
4678 GST_OBJECT_LOCK (demux);
4679 duration = demux->segment.duration;
4680 GST_OBJECT_UNLOCK (demux);
4682 if (!demux->streaming || !demux->seekable) {
4683 gst_query_set_seeking (query, GST_FORMAT_TIME, demux->seekable, 0,
4690 /* try upstream first in TIME */
4691 res = gst_pad_query_default (pad, parent, query);
4693 gst_query_parse_seeking (query, &fmt, &seekable, NULL, NULL);
4694 GST_LOG_OBJECT (demux, "upstream %s seekable %d",
4695 GST_STR_NULL (gst_format_get_name (fmt)), seekable);
4696 /* if no luck, maybe in BYTES */
4697 if (!seekable || fmt != GST_FORMAT_TIME) {
4700 q = gst_query_new_seeking (GST_FORMAT_BYTES);
4701 if ((res = gst_pad_peer_query (demux->sinkpad, q))) {
4702 gst_query_parse_seeking (q, &fmt, &seekable, NULL, NULL);
4703 GST_LOG_OBJECT (demux, "upstream %s seekable %d",
4704 GST_STR_NULL (gst_format_get_name (fmt)), seekable);
4705 if (fmt != GST_FORMAT_BYTES)
4708 gst_query_unref (q);
4709 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable, 0,
4715 GST_LOG_OBJECT (demux, "only support seeking in TIME format");
4719 case GST_QUERY_LATENCY:
4722 GstClockTime min, max;
4724 /* preroll delay does not matter in non-live pipeline,
4725 * but we might end up in a live (rtsp) one ... */
4728 res = gst_pad_query_default (pad, parent, query);
4732 gst_query_parse_latency (query, &live, &min, &max);
4734 GST_DEBUG_OBJECT (demux, "Peer latency: live %d, min %"
4735 GST_TIME_FORMAT " max %" GST_TIME_FORMAT, live,
4736 GST_TIME_ARGS (min), GST_TIME_ARGS (max));
4738 GST_OBJECT_LOCK (demux);
4739 min += demux->latency;
4741 max += demux->latency;
4742 GST_OBJECT_UNLOCK (demux);
4744 gst_query_set_latency (query, live, min, max);
4747 case GST_QUERY_SEGMENT:
4752 format = demux->segment.format;
4755 gst_segment_to_stream_time (&demux->segment, format,
4756 demux->segment.start);
4757 if ((stop = demux->segment.stop) == -1)
4758 stop = demux->segment.duration;
4760 stop = gst_segment_to_stream_time (&demux->segment, format, stop);
4762 gst_query_set_segment (query, demux->segment.rate, format, start, stop);
4767 res = gst_pad_query_default (pad, parent, query);
4774 static GstStateChangeReturn
4775 gst_asf_demux_change_state (GstElement * element, GstStateChange transition)
4777 GstASFDemux *demux = GST_ASF_DEMUX (element);
4778 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
4780 switch (transition) {
4781 case GST_STATE_CHANGE_NULL_TO_READY:{
4782 gst_segment_init (&demux->segment, GST_FORMAT_TIME);
4783 demux->need_newsegment = TRUE;
4784 demux->segment_running = FALSE;
4785 demux->keyunit_sync = FALSE;
4786 demux->accurate = FALSE;
4787 demux->adapter = gst_adapter_new ();
4788 demux->metadata = gst_caps_new_empty ();
4789 demux->global_metadata = gst_structure_new_empty ("metadata");
4790 demux->data_size = 0;
4791 demux->data_offset = 0;
4792 demux->index_offset = 0;
4793 demux->base_offset = 0;
4794 demux->flowcombiner = gst_flow_combiner_new ();
4802 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
4803 if (ret == GST_STATE_CHANGE_FAILURE)
4806 switch (transition) {
4807 case GST_STATE_CHANGE_PAUSED_TO_READY:
4808 gst_asf_demux_reset (demux, FALSE);
4811 case GST_STATE_CHANGE_READY_TO_NULL:
4812 gst_asf_demux_reset (demux, FALSE);
4813 gst_flow_combiner_free (demux->flowcombiner);
4814 demux->flowcombiner = NULL;