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)
914 /* Callers should have made sure that data_len is big enough */
915 g_assert (data_len >= ASF_OBJECT_HEADER_SIZE);
917 if (data_len < ASF_OBJECT_HEADER_SIZE)
920 guid.v1 = GST_READ_UINT32_LE (data + 0);
921 guid.v2 = GST_READ_UINT32_LE (data + 4);
922 guid.v3 = GST_READ_UINT32_LE (data + 8);
923 guid.v4 = GST_READ_UINT32_LE (data + 12);
925 /* FIXME: make asf_demux_identify_object_guid() */
926 object->id = gst_asf_demux_identify_guid (asf_object_guids, &guid);
927 if (object->id == ASF_OBJ_UNDEFINED && expect) {
928 GST_WARNING_OBJECT (demux, "Unknown object %08x-%08x-%08x-%08x",
929 guid.v1, guid.v2, guid.v3, guid.v4);
932 object->size = GST_READ_UINT64_LE (data + 16);
933 if (object->id != ASF_OBJ_DATA && object->size >= G_MAXUINT) {
934 GST_WARNING_OBJECT (demux,
935 "ASF Object size corrupted (greater than 32bit)");
944 gst_asf_demux_release_old_pads (GstASFDemux * demux)
946 GST_DEBUG_OBJECT (demux, "Releasing old pads");
948 while (demux->old_num_streams > 0) {
949 gst_pad_push_event (demux->old_stream[demux->old_num_streams - 1].pad,
950 gst_event_new_eos ());
951 gst_asf_demux_free_stream (demux,
952 &demux->old_stream[demux->old_num_streams - 1]);
953 --demux->old_num_streams;
955 memset (demux->old_stream, 0, sizeof (demux->old_stream));
956 demux->old_num_streams = 0;
960 gst_asf_demux_chain_headers (GstASFDemux * demux)
963 guint8 *header_data, *data = NULL;
964 const guint8 *cdata = NULL;
966 GstFlowReturn flow = GST_FLOW_OK;
968 cdata = (guint8 *) gst_adapter_map (demux->adapter, ASF_OBJECT_HEADER_SIZE);
972 if (!asf_demux_peek_object (demux, cdata, ASF_OBJECT_HEADER_SIZE, &obj, TRUE))
974 if (obj.id != ASF_OBJ_HEADER)
977 GST_LOG_OBJECT (demux, "header size = %u", (guint) obj.size);
979 /* + 50 for non-packet data at beginning of ASF_OBJ_DATA */
980 if (gst_adapter_available (demux->adapter) < obj.size + 50)
983 data = gst_adapter_take (demux->adapter, obj.size + 50);
986 header_size = obj.size;
987 flow = gst_asf_demux_process_object (demux, &header_data, &header_size);
988 if (flow != GST_FLOW_OK)
991 /* calculate where the packet data starts */
992 demux->data_offset = obj.size + 50;
994 /* now parse the beginning of the ASF_OBJ_DATA object */
995 if (!gst_asf_demux_parse_data_object_start (demux, data + obj.size))
998 if (demux->num_streams == 0)
1007 GST_LOG_OBJECT (demux, "not enough data in adapter yet");
1014 GST_ELEMENT_ERROR (demux, STREAM, WRONG_TYPE, (NULL),
1015 ("This doesn't seem to be an ASF file"));
1017 return GST_FLOW_ERROR;
1022 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
1023 ("header parsing failed, or no streams found, flow = %s",
1024 gst_flow_get_name (flow)));
1026 return GST_FLOW_ERROR;
1031 gst_asf_demux_pull_data (GstASFDemux * demux, guint64 offset, guint size,
1032 GstBuffer ** p_buf, GstFlowReturn * p_flow)
1037 GST_LOG_OBJECT (demux, "pulling buffer at %" G_GUINT64_FORMAT "+%u",
1040 flow = gst_pad_pull_range (demux->sinkpad, offset, size, p_buf);
1042 if (G_LIKELY (p_flow))
1045 if (G_UNLIKELY (flow != GST_FLOW_OK)) {
1046 GST_DEBUG_OBJECT (demux, "flow %s pulling buffer at %" G_GUINT64_FORMAT
1047 "+%u", gst_flow_get_name (flow), offset, size);
1052 g_assert (*p_buf != NULL);
1054 buffer_size = gst_buffer_get_size (*p_buf);
1055 if (G_UNLIKELY (buffer_size < size)) {
1056 GST_DEBUG_OBJECT (demux, "short read pulling buffer at %" G_GUINT64_FORMAT
1057 "+%u (got only %" G_GSIZE_FORMAT " bytes)", offset, size, buffer_size);
1058 gst_buffer_unref (*p_buf);
1059 if (G_LIKELY (p_flow))
1060 *p_flow = GST_FLOW_EOS;
1068 static GstFlowReturn
1069 gst_asf_demux_pull_indices (GstASFDemux * demux)
1071 GstBuffer *buf = NULL;
1074 GstFlowReturn ret = GST_FLOW_OK;
1076 offset = demux->index_offset;
1078 if (G_UNLIKELY (offset == 0)) {
1079 GST_DEBUG_OBJECT (demux, "can't read indices, don't know index offset");
1084 while (gst_asf_demux_pull_data (demux, offset, 16 + 8, &buf, NULL)) {
1090 gst_buffer_map (buf, &map, GST_MAP_READ);
1091 g_assert (map.size >= 16 + 8);
1092 if (!asf_demux_peek_object (demux, map.data, 16 + 8, &obj, TRUE)) {
1093 gst_buffer_unmap (buf, &map);
1094 gst_buffer_replace (&buf, NULL);
1095 ret = GST_FLOW_ERROR;
1098 gst_buffer_unmap (buf, &map);
1099 gst_buffer_replace (&buf, NULL);
1101 /* check for sanity */
1102 if (G_UNLIKELY (obj.size > (5 * 1024 * 1024))) {
1103 GST_DEBUG_OBJECT (demux, "implausible index object size, bailing out");
1107 if (G_UNLIKELY (!gst_asf_demux_pull_data (demux, offset, obj.size, &buf,
1111 GST_LOG_OBJECT (demux, "index object at offset 0x%" G_GINT64_MODIFIER "X"
1112 ", size %u", offset, (guint) obj.size);
1114 offset += obj.size; /* increase before _process_object changes it */
1116 gst_buffer_map (buf, &map, GST_MAP_READ);
1117 g_assert (map.size >= obj.size);
1118 bufdata = (guint8 *) map.data;
1119 obj_size = obj.size;
1120 ret = gst_asf_demux_process_object (demux, &bufdata, &obj_size);
1121 gst_buffer_unmap (buf, &map);
1122 gst_buffer_replace (&buf, NULL);
1124 if (G_UNLIKELY (ret != GST_FLOW_OK))
1130 GST_DEBUG_OBJECT (demux, "read %u index objects", num_read);
1135 gst_asf_demux_parse_data_object_start (GstASFDemux * demux, guint8 * data)
1139 if (!asf_demux_peek_object (demux, data, 50, &obj, TRUE)) {
1140 GST_WARNING_OBJECT (demux, "Corrupted data");
1143 if (obj.id != ASF_OBJ_DATA) {
1144 GST_WARNING_OBJECT (demux, "headers not followed by a DATA object");
1148 demux->state = GST_ASF_DEMUX_STATE_DATA;
1150 if (!demux->broadcast && obj.size > 50) {
1151 demux->data_size = obj.size - 50;
1152 /* CHECKME: for at least one file this is off by +158 bytes?! */
1153 demux->index_offset = demux->data_offset + demux->data_size;
1155 demux->data_size = 0;
1156 demux->index_offset = 0;
1161 if (!demux->broadcast) {
1162 /* skip object header (24 bytes) and file GUID (16 bytes) */
1163 demux->num_packets = GST_READ_UINT64_LE (data + (16 + 8) + 16);
1165 demux->num_packets = 0;
1168 if (demux->num_packets == 0)
1169 demux->seekable = FALSE;
1171 /* fallback in the unlikely case that headers are inconsistent, can't hurt */
1172 if (demux->data_size == 0 && demux->num_packets > 0) {
1173 demux->data_size = demux->num_packets * demux->packet_size;
1174 demux->index_offset = demux->data_offset + demux->data_size;
1177 /* process pending stream objects and create pads for those */
1178 gst_asf_demux_process_queued_extended_stream_objects (demux);
1180 GST_INFO_OBJECT (demux, "Stream has %" G_GUINT64_FORMAT " packets, "
1181 "data_offset=%" G_GINT64_FORMAT ", data_size=%" G_GINT64_FORMAT
1182 ", index_offset=%" G_GUINT64_FORMAT, demux->num_packets,
1183 demux->data_offset, demux->data_size, demux->index_offset);
1189 gst_asf_demux_pull_headers (GstASFDemux * demux, GstFlowReturn * pflow)
1191 GstFlowReturn flow = GST_FLOW_OK;
1193 GstBuffer *buf = NULL;
1198 GST_LOG_OBJECT (demux, "reading headers");
1200 /* pull HEADER object header, so we know its size */
1201 if (!gst_asf_demux_pull_data (demux, demux->base_offset, 16 + 8, &buf, &flow))
1204 gst_buffer_map (buf, &map, GST_MAP_READ);
1205 g_assert (map.size >= 16 + 8);
1206 if (!asf_demux_peek_object (demux, map.data, 16 + 8, &obj, TRUE)) {
1207 gst_buffer_unmap (buf, &map);
1208 gst_buffer_replace (&buf, NULL);
1209 flow = GST_FLOW_ERROR;
1212 gst_buffer_unmap (buf, &map);
1213 gst_buffer_replace (&buf, NULL);
1215 if (obj.id != ASF_OBJ_HEADER)
1218 GST_LOG_OBJECT (demux, "header size = %" G_GUINT64_FORMAT, obj.size);
1220 /* pull HEADER object */
1221 if (!gst_asf_demux_pull_data (demux, demux->base_offset, obj.size, &buf,
1225 size = obj.size; /* don't want obj.size changed */
1226 gst_buffer_map (buf, &map, GST_MAP_READ);
1227 g_assert (map.size >= size);
1228 bufdata = (guint8 *) map.data;
1229 flow = gst_asf_demux_process_object (demux, &bufdata, &size);
1230 gst_buffer_unmap (buf, &map);
1231 gst_buffer_replace (&buf, NULL);
1233 if (flow != GST_FLOW_OK) {
1234 GST_WARNING_OBJECT (demux, "process_object: %s", gst_flow_get_name (flow));
1238 /* calculate where the packet data starts */
1239 demux->data_offset = demux->base_offset + obj.size + 50;
1241 /* now pull beginning of DATA object before packet data */
1242 if (!gst_asf_demux_pull_data (demux, demux->base_offset + obj.size, 50, &buf,
1246 gst_buffer_map (buf, &map, GST_MAP_READ);
1247 g_assert (map.size >= size);
1248 bufdata = (guint8 *) map.data;
1249 if (!gst_asf_demux_parse_data_object_start (demux, bufdata))
1252 if (demux->num_streams == 0)
1255 gst_buffer_unmap (buf, &map);
1256 gst_buffer_replace (&buf, NULL);
1264 gst_buffer_unmap (buf, &map);
1265 gst_buffer_replace (&buf, NULL);
1267 GST_ELEMENT_ERROR (demux, STREAM, WRONG_TYPE, (NULL),
1268 ("This doesn't seem to be an ASF file"));
1269 *pflow = GST_FLOW_ERROR;
1274 flow = GST_FLOW_ERROR;
1275 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
1276 ("header parsing failed, or no streams found, flow = %s",
1277 gst_flow_get_name (flow)));
1282 gst_buffer_unmap (buf, &map);
1283 gst_buffer_replace (&buf, NULL);
1284 if (flow == ASF_FLOW_NEED_MORE_DATA)
1285 flow = GST_FLOW_ERROR;
1292 all_streams_prerolled (GstASFDemux * demux)
1294 GstClockTime preroll_time;
1295 guint i, num_no_data = 0;
1297 /* Allow at least 500ms of preroll_time */
1298 preroll_time = MAX (demux->preroll, 500 * GST_MSECOND);
1300 /* returns TRUE as long as there isn't a stream which (a) has data queued
1301 * and (b) the timestamp of last piece of data queued is < demux->preroll
1302 * AND there is at least one other stream with data queued */
1303 for (i = 0; i < demux->num_streams; ++i) {
1304 AsfPayload *last_payload = NULL;
1308 stream = &demux->stream[i];
1309 if (G_UNLIKELY (stream->payloads->len == 0)) {
1311 GST_LOG_OBJECT (stream->pad, "no data queued");
1315 /* find last payload with timestamp */
1316 for (last_idx = stream->payloads->len - 1;
1317 last_idx >= 0 && (last_payload == NULL
1318 || !GST_CLOCK_TIME_IS_VALID (last_payload->ts)); --last_idx) {
1319 last_payload = &g_array_index (stream->payloads, AsfPayload, last_idx);
1322 GST_LOG_OBJECT (stream->pad, "checking if %" GST_TIME_FORMAT " > %"
1323 GST_TIME_FORMAT, GST_TIME_ARGS (last_payload->ts),
1324 GST_TIME_ARGS (preroll_time));
1325 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (last_payload->ts)
1326 || last_payload->ts <= preroll_time)) {
1327 GST_LOG_OBJECT (stream->pad, "not beyond preroll point yet");
1332 if (G_UNLIKELY (num_no_data > 0))
1340 gst_asf_demux_have_mutually_exclusive_active_stream (GstASFDemux * demux,
1345 for (l = demux->mut_ex_streams; l != NULL; l = l->next) {
1348 /* check for each mutual exclusion group whether it affects this stream */
1349 for (mes = (guint8 *) l->data; mes != NULL && *mes != 0xff; ++mes) {
1350 if (*mes == stream->id) {
1351 /* we are in this group; let's check if we've already activated streams
1352 * that are in the same group (and hence mutually exclusive to this
1354 for (mes = (guint8 *) l->data; mes != NULL && *mes != 0xff; ++mes) {
1357 for (i = 0; i < demux->num_streams; ++i) {
1358 if (demux->stream[i].id == *mes && demux->stream[i].active) {
1359 GST_LOG_OBJECT (demux, "stream with ID %d is mutually exclusive "
1360 "to already active stream with ID %d", stream->id,
1361 demux->stream[i].id);
1366 /* we can only be in this group once, let's break out and move on to
1367 * the next mutual exclusion group */
1378 gst_asf_demux_check_segment_ts (GstASFDemux * demux, GstClockTime payload_ts)
1380 /* remember the first queued timestamp for the segment */
1381 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (demux->segment_ts) &&
1382 GST_CLOCK_TIME_IS_VALID (demux->first_ts))) {
1383 GST_DEBUG_OBJECT (demux, "segment ts: %" GST_TIME_FORMAT,
1384 GST_TIME_ARGS (demux->first_ts));
1385 demux->segment_ts = payload_ts;
1386 /* always note, but only determines segment when streaming */
1387 if (demux->streaming)
1388 gst_segment_do_seek (&demux->segment, demux->in_segment.rate,
1389 GST_FORMAT_TIME, (GstSeekFlags) demux->segment.flags,
1390 GST_SEEK_TYPE_SET, demux->segment_ts, GST_SEEK_TYPE_NONE, 0, NULL);
1395 gst_asf_demux_check_first_ts (GstASFDemux * demux, gboolean force)
1397 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (demux->first_ts))) {
1398 GstClockTime first_ts = GST_CLOCK_TIME_NONE;
1401 /* go trhough each stream, find smallest timestamp */
1402 for (i = 0; i < demux->num_streams; ++i) {
1405 GstClockTime stream_min_ts = GST_CLOCK_TIME_NONE;
1406 GstClockTime stream_min_ts2 = GST_CLOCK_TIME_NONE; /* second smallest timestamp */
1407 stream = &demux->stream[i];
1409 for (j = 0; j < stream->payloads->len; ++j) {
1410 AsfPayload *payload = &g_array_index (stream->payloads, AsfPayload, j);
1411 if (GST_CLOCK_TIME_IS_VALID (payload->ts) &&
1412 (!GST_CLOCK_TIME_IS_VALID (stream_min_ts)
1413 || stream_min_ts > payload->ts)) {
1414 stream_min_ts = payload->ts;
1416 if (GST_CLOCK_TIME_IS_VALID (payload->ts) &&
1417 payload->ts > stream_min_ts &&
1418 (!GST_CLOCK_TIME_IS_VALID (stream_min_ts2)
1419 || stream_min_ts2 > payload->ts)) {
1420 stream_min_ts2 = payload->ts;
1424 /* there are some DVR ms files where first packet has TS of 0 (instead of -1) while subsequent packets have
1425 regular (singificantly larger) timestamps. If we don't deal with it, we may end up with huge gap in timestamps
1426 which makes playback stuck. The 0 timestamp may also be valid though, if the second packet timestamp continues
1427 from it. I havent found a better way to distinguish between these two, except to set an arbitrary boundary
1428 and disregard the first 0 timestamp if the second timestamp is bigger than the boundary) */
1430 if (stream_min_ts == 0 && stream_min_ts2 == GST_CLOCK_TIME_NONE && !force) /* still waiting for the second timestamp */
1433 if (stream_min_ts == 0 && stream_min_ts2 > GST_SECOND) /* first timestamp is 0 and second is significantly larger, disregard the 0 */
1434 stream_min_ts = stream_min_ts2;
1436 /* if we don't have timestamp for this stream, wait for more data */
1437 if (!GST_CLOCK_TIME_IS_VALID (stream_min_ts) && !force)
1440 if (GST_CLOCK_TIME_IS_VALID (stream_min_ts) &&
1441 (!GST_CLOCK_TIME_IS_VALID (first_ts) || first_ts > stream_min_ts))
1442 first_ts = stream_min_ts;
1445 if (!GST_CLOCK_TIME_IS_VALID (first_ts)) /* can happen with force = TRUE */
1448 demux->first_ts = first_ts;
1450 /* update packets queued before we knew first timestamp */
1451 for (i = 0; i < demux->num_streams; ++i) {
1454 stream = &demux->stream[i];
1456 for (j = 0; j < stream->payloads->len; ++j) {
1457 AsfPayload *payload = &g_array_index (stream->payloads, AsfPayload, j);
1458 if (GST_CLOCK_TIME_IS_VALID (payload->ts)) {
1459 if (payload->ts > first_ts)
1460 payload->ts -= first_ts;
1468 gst_asf_demux_check_segment_ts (demux, 0);
1474 gst_asf_demux_update_caps_from_payload (GstASFDemux * demux, AsfStream * stream)
1476 /* try to determine whether the stream is AC-3 or MPEG; In dvr-ms the codecTag is unreliable
1477 and often set wrong, inspecting the data is the only way that seem to be working */
1478 GstTypeFindProbability prob = GST_TYPE_FIND_NONE;
1479 GstCaps *caps = NULL;
1481 GstAdapter *adapter = gst_adapter_new ();
1483 for (i = 0; i < stream->payloads->len && prob < GST_TYPE_FIND_LIKELY; ++i) {
1485 AsfPayload *payload;
1488 payload = &g_array_index (stream->payloads, AsfPayload, i);
1489 gst_adapter_push (adapter, gst_buffer_ref (payload->buf));
1490 len = gst_adapter_available (adapter);
1491 data = gst_adapter_map (adapter, len);
1495 #define MIN_LENGTH 128
1497 /* look for the sync points */
1499 if (len < MIN_LENGTH || /* give typefind something to work on */
1500 (data[0] == 0x0b && data[1] == 0x77) || /* AC-3 sync point */
1501 (data[0] == 0xFF && ((data[1] & 0xF0) >> 4) == 0xF)) /* MPEG sync point */
1507 gst_caps_take (&caps, gst_type_find_helper_for_data (GST_OBJECT (demux),
1510 if (prob < GST_TYPE_FIND_LIKELY) {
1513 if (len > MIN_LENGTH)
1514 /* this wasn't it, look for another sync point */
1518 gst_adapter_unmap (adapter);
1521 gst_object_unref (adapter);
1524 gst_caps_take (&stream->caps, caps);
1532 gst_asf_demux_check_activate_streams (GstASFDemux * demux, gboolean force)
1534 guint i, actual_streams = 0;
1536 if (demux->activated_streams)
1539 if (G_UNLIKELY (!gst_asf_demux_check_first_ts (demux, force)))
1542 if (!all_streams_prerolled (demux) && !force) {
1543 GST_DEBUG_OBJECT (demux, "not all streams with data beyond preroll yet");
1547 for (i = 0; i < demux->num_streams; ++i) {
1548 AsfStream *stream = &demux->stream[i];
1550 if (stream->payloads->len > 0) {
1552 if (stream->inspect_payload && /* dvr-ms required payload inspection */
1553 !stream->active && /* do not inspect active streams (caps were already set) */
1554 !gst_asf_demux_update_caps_from_payload (demux, stream) && /* failed to determine caps */
1555 stream->payloads->len < 20) { /* if we couldn't determine the caps from 20 packets then just give up and use whatever was in codecTag */
1556 /* try to gather some more data */
1559 /* we don't check mutual exclusion stuff here; either we have data for
1560 * a stream, then we active it, or we don't, then we'll ignore it */
1561 GST_LOG_OBJECT (stream->pad, "is prerolled - activate!");
1562 gst_asf_demux_activate_stream (demux, stream);
1563 actual_streams += 1;
1565 GST_LOG_OBJECT (stream->pad, "no data, ignoring stream");
1569 if (actual_streams == 0) {
1570 /* We don't have any streams activated ! */
1571 GST_ERROR_OBJECT (demux, "No streams activated!");
1575 gst_asf_demux_release_old_pads (demux);
1577 demux->activated_streams = TRUE;
1578 GST_LOG_OBJECT (demux, "signalling no more pads");
1579 gst_element_no_more_pads (GST_ELEMENT (demux));
1583 /* returns the stream that has a complete payload with the lowest timestamp
1584 * queued, or NULL (we push things by timestamp because during the internal
1585 * prerolling we might accumulate more data then the external queues can take,
1586 * so we'd lock up if we pushed all accumulated data for stream N in one go) */
1588 gst_asf_demux_find_stream_with_complete_payload (GstASFDemux * demux)
1590 AsfPayload *best_payload = NULL;
1591 AsfStream *best_stream = NULL;
1594 for (i = 0; i < demux->num_streams; ++i) {
1598 stream = &demux->stream[i];
1600 /* Don't push any data until we have at least one payload that falls within
1601 * the current segment. This way we can remove out-of-segment payloads that
1602 * don't need to be decoded after a seek, sending only data from the
1603 * keyframe directly before our segment start */
1604 if (stream->payloads->len > 0) {
1605 AsfPayload *payload = NULL;
1608 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)) {
1609 /* Reverse playback */
1611 if (stream->is_video) {
1612 /* We have to push payloads from KF to the first frame we accumulated (reverse order) */
1613 if (stream->reverse_kf_ready) {
1615 &g_array_index (stream->payloads, AsfPayload, stream->kf_pos);
1616 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (payload->ts))) {
1617 /* TODO : remove payload from the list? */
1624 /* find first complete payload with timestamp */
1625 for (j = stream->payloads->len - 1;
1626 j >= 0 && (payload == NULL
1627 || !GST_CLOCK_TIME_IS_VALID (payload->ts)); --j) {
1628 payload = &g_array_index (stream->payloads, AsfPayload, j);
1631 /* If there's a complete payload queued for this stream */
1632 if (!gst_asf_payload_is_complete (payload))
1638 /* find last payload with timestamp */
1639 for (last_idx = stream->payloads->len - 1;
1640 last_idx >= 0 && (payload == NULL
1641 || !GST_CLOCK_TIME_IS_VALID (payload->ts)); --last_idx) {
1642 payload = &g_array_index (stream->payloads, AsfPayload, last_idx);
1645 /* if this is first payload after seek we might need to update the segment */
1646 if (GST_CLOCK_TIME_IS_VALID (payload->ts))
1647 gst_asf_demux_check_segment_ts (demux, payload->ts);
1649 if (G_UNLIKELY (GST_CLOCK_TIME_IS_VALID (payload->ts) &&
1650 (payload->ts < demux->segment.start))) {
1651 if (G_UNLIKELY ((!demux->keyunit_sync) && (!demux->accurate)
1652 && payload->keyframe)) {
1653 GST_DEBUG_OBJECT (stream->pad,
1654 "Found keyframe, updating segment start to %" GST_TIME_FORMAT,
1655 GST_TIME_ARGS (payload->ts));
1656 demux->segment.start = payload->ts;
1657 demux->segment.time = payload->ts;
1659 GST_DEBUG_OBJECT (stream->pad, "Last queued payload has timestamp %"
1660 GST_TIME_FORMAT " which is before our segment start %"
1661 GST_TIME_FORMAT ", not pushing yet",
1662 GST_TIME_ARGS (payload->ts),
1663 GST_TIME_ARGS (demux->segment.start));
1668 /* find first complete payload with timestamp */
1670 j < stream->payloads->len && (payload == NULL
1671 || !GST_CLOCK_TIME_IS_VALID (payload->ts)); ++j) {
1672 payload = &g_array_index (stream->payloads, AsfPayload, j);
1675 /* Now see if there's a complete payload queued for this stream */
1676 if (!gst_asf_payload_is_complete (payload))
1680 /* ... and whether its timestamp is lower than the current best */
1681 if (best_stream == NULL || best_payload->ts > payload->ts) {
1682 best_stream = stream;
1683 best_payload = payload;
1691 static GstFlowReturn
1692 gst_asf_demux_push_complete_payloads (GstASFDemux * demux, gboolean force)
1695 GstFlowReturn ret = GST_FLOW_OK;
1697 if (G_UNLIKELY (!demux->activated_streams)) {
1698 if (!gst_asf_demux_check_activate_streams (demux, force))
1700 /* streams are now activated */
1703 while ((stream = gst_asf_demux_find_stream_with_complete_payload (demux))) {
1704 AsfPayload *payload;
1705 GstClockTime timestamp = GST_CLOCK_TIME_NONE;
1706 GstClockTime duration = GST_CLOCK_TIME_NONE;
1708 /* wait until we had a chance to "lock on" some payload's timestamp */
1709 if (G_UNLIKELY (demux->need_newsegment
1710 && !GST_CLOCK_TIME_IS_VALID (demux->segment_ts)))
1713 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment) && stream->is_video
1714 && stream->payloads->len) {
1715 payload = &g_array_index (stream->payloads, AsfPayload, stream->kf_pos);
1717 payload = &g_array_index (stream->payloads, AsfPayload, 0);
1720 /* do we need to send a newsegment event */
1721 if ((G_UNLIKELY (demux->need_newsegment))) {
1722 GstEvent *segment_event;
1724 /* safe default if insufficient upstream info */
1725 if (!GST_CLOCK_TIME_IS_VALID (demux->in_gap))
1728 if (demux->segment.stop == GST_CLOCK_TIME_NONE &&
1729 demux->segment.duration > 0) {
1730 /* slight HACK; prevent clipping of last bit */
1731 demux->segment.stop = demux->segment.duration + demux->in_gap;
1734 /* FIXME : only if ACCURATE ! */
1735 if (G_LIKELY (!demux->keyunit_sync && !demux->accurate
1736 && (GST_CLOCK_TIME_IS_VALID (payload->ts)))
1737 && !GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)) {
1738 GST_DEBUG ("Adjusting newsegment start to %" GST_TIME_FORMAT,
1739 GST_TIME_ARGS (payload->ts));
1740 demux->segment.start = payload->ts;
1741 demux->segment.time = payload->ts;
1744 GST_DEBUG_OBJECT (demux, "sending new-segment event %" GST_SEGMENT_FORMAT,
1747 /* note: we fix up all timestamps to start from 0, so this should be ok */
1748 segment_event = gst_event_new_segment (&demux->segment);
1749 if (demux->segment_seqnum)
1750 gst_event_set_seqnum (segment_event, demux->segment_seqnum);
1751 gst_asf_demux_send_event_unlocked (demux, segment_event);
1753 /* now post any global tags we may have found */
1754 if (demux->taglist == NULL) {
1755 demux->taglist = gst_tag_list_new_empty ();
1756 gst_tag_list_set_scope (demux->taglist, GST_TAG_SCOPE_GLOBAL);
1759 gst_tag_list_add (demux->taglist, GST_TAG_MERGE_REPLACE,
1760 GST_TAG_CONTAINER_FORMAT, "ASF", NULL);
1762 GST_DEBUG_OBJECT (demux, "global tags: %" GST_PTR_FORMAT, demux->taglist);
1763 gst_asf_demux_send_event_unlocked (demux,
1764 gst_event_new_tag (demux->taglist));
1765 demux->taglist = NULL;
1767 demux->need_newsegment = FALSE;
1768 demux->segment_seqnum = 0;
1769 demux->segment_running = TRUE;
1772 /* Do we have tags pending for this stream? */
1773 if (G_UNLIKELY (stream->pending_tags)) {
1774 GST_LOG_OBJECT (stream->pad, "%" GST_PTR_FORMAT, stream->pending_tags);
1775 gst_pad_push_event (stream->pad,
1776 gst_event_new_tag (stream->pending_tags));
1777 stream->pending_tags = NULL;
1780 /* We have the whole packet now so we should push the packet to
1781 * the src pad now. First though we should check if we need to do
1783 if (G_UNLIKELY (stream->span > 1)) {
1784 gst_asf_demux_descramble_buffer (demux, stream, &payload->buf);
1787 payload->buf = gst_buffer_make_writable (payload->buf);
1789 if (G_LIKELY (!payload->keyframe)) {
1790 GST_BUFFER_FLAG_SET (payload->buf, GST_BUFFER_FLAG_DELTA_UNIT);
1793 if (G_UNLIKELY (stream->discont)) {
1794 GST_DEBUG_OBJECT (stream->pad, "marking DISCONT on stream");
1795 GST_BUFFER_FLAG_SET (payload->buf, GST_BUFFER_FLAG_DISCONT);
1796 stream->discont = FALSE;
1799 if (G_UNLIKELY (stream->is_video && payload->par_x && payload->par_y &&
1800 (payload->par_x != stream->par_x) &&
1801 (payload->par_y != stream->par_y))) {
1802 GST_DEBUG ("Updating PAR (%d/%d => %d/%d)",
1803 stream->par_x, stream->par_y, payload->par_x, payload->par_y);
1804 stream->par_x = payload->par_x;
1805 stream->par_y = payload->par_y;
1806 stream->caps = gst_caps_make_writable (stream->caps);
1807 gst_caps_set_simple (stream->caps, "pixel-aspect-ratio",
1808 GST_TYPE_FRACTION, stream->par_x, stream->par_y, NULL);
1809 gst_pad_set_caps (stream->pad, stream->caps);
1812 if (G_UNLIKELY (stream->interlaced != payload->interlaced)) {
1813 GST_DEBUG ("Updating interlaced status (%d => %d)", stream->interlaced,
1814 payload->interlaced);
1815 stream->interlaced = payload->interlaced;
1816 stream->caps = gst_caps_make_writable (stream->caps);
1817 gst_caps_set_simple (stream->caps, "interlace-mode", G_TYPE_BOOLEAN,
1818 (stream->interlaced ? "mixed" : "progressive"), NULL);
1819 gst_pad_set_caps (stream->pad, stream->caps);
1822 /* (sort of) interpolate timestamps using upstream "frame of reference",
1823 * typically useful for live src, but might (unavoidably) mess with
1824 * position reporting if a live src is playing not so live content
1825 * (e.g. rtspsrc taking some time to fall back to tcp) */
1826 timestamp = payload->ts;
1827 if (GST_CLOCK_TIME_IS_VALID (timestamp)
1828 && !GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)) {
1829 timestamp += demux->in_gap;
1831 /* Check if we're after the segment already, if so no need to push
1833 if (demux->segment.stop != -1 && timestamp > demux->segment.stop) {
1834 GST_DEBUG_OBJECT (stream->pad,
1835 "Payload after segment stop %" GST_TIME_FORMAT,
1836 GST_TIME_ARGS (demux->segment.stop));
1838 gst_flow_combiner_update_pad_flow (demux->flowcombiner, stream->pad,
1840 gst_buffer_unref (payload->buf);
1841 payload->buf = NULL;
1842 g_array_remove_index (stream->payloads, 0);
1843 /* Break out as soon as we have an issue */
1844 if (G_UNLIKELY (ret != GST_FLOW_OK))
1851 GST_BUFFER_PTS (payload->buf) = timestamp;
1853 if (payload->duration == GST_CLOCK_TIME_NONE
1854 && stream->ext_props.avg_time_per_frame != 0) {
1855 duration = stream->ext_props.avg_time_per_frame * 100;
1857 duration = payload->duration;
1859 GST_BUFFER_DURATION (payload->buf) = duration;
1861 /* FIXME: we should really set durations on buffers if we can */
1863 GST_LOG_OBJECT (stream->pad, "pushing buffer, %" GST_PTR_FORMAT,
1866 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment) && stream->is_video) {
1867 if (stream->reverse_kf_ready == TRUE && stream->kf_pos == 0) {
1868 GST_BUFFER_FLAG_SET (payload->buf, GST_BUFFER_FLAG_DISCONT);
1870 } else if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)) {
1871 GST_BUFFER_FLAG_SET (payload->buf, GST_BUFFER_FLAG_DISCONT);
1875 if (stream->active) {
1876 if (G_UNLIKELY (stream->first_buffer)) {
1877 if (stream->streamheader != NULL) {
1878 GST_DEBUG_OBJECT (stream->pad,
1879 "Pushing streamheader before first buffer");
1880 gst_pad_push (stream->pad, gst_buffer_ref (stream->streamheader));
1882 stream->first_buffer = FALSE;
1885 if (GST_CLOCK_TIME_IS_VALID (timestamp)
1886 && timestamp > demux->segment.position) {
1887 demux->segment.position = timestamp;
1888 if (GST_CLOCK_TIME_IS_VALID (duration))
1889 demux->segment.position += timestamp;
1892 ret = gst_pad_push (stream->pad, payload->buf);
1894 gst_flow_combiner_update_pad_flow (demux->flowcombiner, stream->pad,
1897 gst_buffer_unref (payload->buf);
1900 payload->buf = NULL;
1901 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment) && stream->is_video
1902 && stream->reverse_kf_ready) {
1903 g_array_remove_index (stream->payloads, stream->kf_pos);
1906 if (stream->reverse_kf_ready == TRUE && stream->kf_pos < 0) {
1908 stream->reverse_kf_ready = FALSE;
1911 g_array_remove_index (stream->payloads, 0);
1914 /* Break out as soon as we have an issue */
1915 if (G_UNLIKELY (ret != GST_FLOW_OK))
1923 gst_asf_demux_check_buffer_is_header (GstASFDemux * demux, GstBuffer * buf)
1928 g_assert (buf != NULL);
1930 GST_LOG_OBJECT (demux, "Checking if buffer is a header");
1932 gst_buffer_map (buf, &map, GST_MAP_READ);
1934 /* we return false on buffer too small */
1935 if (map.size < ASF_OBJECT_HEADER_SIZE) {
1936 gst_buffer_unmap (buf, &map);
1940 /* check if it is a header */
1942 asf_demux_peek_object (demux, map.data, ASF_OBJECT_HEADER_SIZE, &obj,
1944 gst_buffer_unmap (buf, &map);
1945 if (valid && obj.id == ASF_OBJ_HEADER) {
1952 gst_asf_demux_check_chained_asf (GstASFDemux * demux)
1954 guint64 off = demux->data_offset + (demux->packet * demux->packet_size);
1955 GstFlowReturn ret = GST_FLOW_OK;
1956 GstBuffer *buf = NULL;
1957 gboolean header = FALSE;
1959 /* TODO maybe we should skip index objects after the data and look
1960 * further for a new header */
1961 if (gst_asf_demux_pull_data (demux, off, ASF_OBJECT_HEADER_SIZE, &buf, &ret)) {
1962 g_assert (buf != NULL);
1963 /* check if it is a header */
1964 if (gst_asf_demux_check_buffer_is_header (demux, buf)) {
1965 GST_DEBUG_OBJECT (demux, "new base offset: %" G_GUINT64_FORMAT, off);
1966 demux->base_offset = off;
1970 gst_buffer_unref (buf);
1977 gst_asf_demux_loop (GstASFDemux * demux)
1979 GstFlowReturn flow = GST_FLOW_OK;
1980 GstBuffer *buf = NULL;
1983 if (G_UNLIKELY (demux->state == GST_ASF_DEMUX_STATE_HEADER)) {
1984 if (!gst_asf_demux_pull_headers (demux, &flow)) {
1988 flow = gst_asf_demux_pull_indices (demux);
1989 if (flow != GST_FLOW_OK)
1993 g_assert (demux->state == GST_ASF_DEMUX_STATE_DATA);
1995 if (G_UNLIKELY (demux->num_packets != 0
1996 && demux->packet >= demux->num_packets))
1999 GST_LOG_OBJECT (demux, "packet %u/%u", (guint) demux->packet + 1,
2000 (guint) demux->num_packets);
2002 off = demux->data_offset + (demux->packet * demux->packet_size);
2004 if (G_UNLIKELY (!gst_asf_demux_pull_data (demux, off,
2005 demux->packet_size * demux->speed_packets, &buf, &flow))) {
2006 GST_DEBUG_OBJECT (demux, "got flow %s", gst_flow_get_name (flow));
2007 if (flow == GST_FLOW_EOS) {
2009 } else if (flow == GST_FLOW_FLUSHING) {
2010 GST_DEBUG_OBJECT (demux, "Not fatal");
2017 if (G_LIKELY (demux->speed_packets == 1)) {
2018 GstAsfDemuxParsePacketError err;
2019 err = gst_asf_demux_parse_packet (demux, buf);
2020 if (G_UNLIKELY (err != GST_ASF_DEMUX_PARSE_PACKET_ERROR_NONE)) {
2021 /* when we don't know when the data object ends, we should check
2022 * for a chained asf */
2023 if (demux->num_packets == 0) {
2024 if (gst_asf_demux_check_buffer_is_header (demux, buf)) {
2025 GST_INFO_OBJECT (demux, "Chained asf found");
2026 demux->base_offset = off;
2027 gst_asf_demux_reset (demux, TRUE);
2028 gst_buffer_unref (buf);
2032 /* FIXME: We should tally up fatal errors and error out only
2033 * after a few broken packets in a row? */
2035 GST_INFO_OBJECT (demux, "Ignoring recoverable parse error");
2036 gst_buffer_unref (buf);
2038 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)
2039 && !demux->seek_to_cur_pos) {
2041 if (demux->packet < 0) {
2051 flow = gst_asf_demux_push_complete_payloads (demux, FALSE);
2053 if (GST_ASF_DEMUX_IS_REVERSE_PLAYBACK (demux->segment)
2054 && !demux->seek_to_cur_pos) {
2056 if (demux->packet < 0) {
2065 for (n = 0; n < demux->speed_packets; n++) {
2067 GstAsfDemuxParsePacketError err;
2070 gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL,
2071 n * demux->packet_size, demux->packet_size);
2072 err = gst_asf_demux_parse_packet (demux, sub);
2073 if (G_UNLIKELY (err != GST_ASF_DEMUX_PARSE_PACKET_ERROR_NONE)) {
2074 /* when we don't know when the data object ends, we should check
2075 * for a chained asf */
2076 if (demux->num_packets == 0) {
2077 if (gst_asf_demux_check_buffer_is_header (demux, sub)) {
2078 GST_INFO_OBJECT (demux, "Chained asf found");
2079 demux->base_offset = off + n * demux->packet_size;
2080 gst_asf_demux_reset (demux, TRUE);
2081 gst_buffer_unref (sub);
2082 gst_buffer_unref (buf);
2086 /* FIXME: We should tally up fatal errors and error out only
2087 * after a few broken packets in a row? */
2089 GST_INFO_OBJECT (demux, "Ignoring recoverable parse error");
2093 gst_buffer_unref (sub);
2095 if (err == GST_ASF_DEMUX_PARSE_PACKET_ERROR_NONE)
2096 flow = gst_asf_demux_push_complete_payloads (demux, FALSE);
2102 /* reset speed pull */
2103 demux->speed_packets = 1;
2106 gst_buffer_unref (buf);
2108 if (G_UNLIKELY ((demux->num_packets > 0
2109 && demux->packet >= demux->num_packets)
2110 || flow == GST_FLOW_EOS)) {
2111 GST_LOG_OBJECT (demux, "reached EOS");
2115 if (G_UNLIKELY (flow != GST_FLOW_OK)) {
2116 GST_DEBUG_OBJECT (demux, "pushing complete payloads failed");
2120 /* check if we're at the end of the configured segment */
2121 /* FIXME: check if segment end reached etc. */
2127 /* if we haven't activated our streams yet, this might be because we have
2128 * less data queued than required for preroll; force stream activation and
2129 * send any pending payloads before sending EOS */
2130 if (!demux->activated_streams)
2131 flow = gst_asf_demux_push_complete_payloads (demux, TRUE);
2133 /* we want to push an eos or post a segment-done in any case */
2134 if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
2137 /* for segment playback we need to post when (in stream time)
2138 * we stopped, this is either stop (when set) or the duration. */
2139 if ((stop = demux->segment.stop) == -1)
2140 stop = demux->segment.duration;
2142 GST_INFO_OBJECT (demux, "Posting segment-done, at end of segment");
2143 gst_element_post_message (GST_ELEMENT_CAST (demux),
2144 gst_message_new_segment_done (GST_OBJECT (demux), GST_FORMAT_TIME,
2146 gst_asf_demux_send_event_unlocked (demux,
2147 gst_event_new_segment_done (GST_FORMAT_TIME, stop));
2148 } else if (flow != GST_FLOW_EOS) {
2149 /* check if we have a chained asf, in case, we don't eos yet */
2150 if (gst_asf_demux_check_chained_asf (demux)) {
2151 GST_INFO_OBJECT (demux, "Chained ASF starting");
2152 gst_asf_demux_reset (demux, TRUE);
2157 if (!(demux->segment.flags & GST_SEEK_FLAG_SEGMENT)) {
2158 if (demux->activated_streams) {
2159 /* normal playback, send EOS to all linked pads */
2160 GST_INFO_OBJECT (demux, "Sending EOS, at end of stream");
2161 gst_asf_demux_send_event_unlocked (demux, gst_event_new_eos ());
2163 GST_WARNING_OBJECT (demux, "EOS without exposed streams");
2164 flow = GST_FLOW_EOS;
2167 /* ... and fall through to pause */
2171 GST_DEBUG_OBJECT (demux, "pausing task, flow return: %s",
2172 gst_flow_get_name (flow));
2173 demux->segment_running = FALSE;
2174 gst_pad_pause_task (demux->sinkpad);
2176 /* For the error cases */
2177 if (flow == GST_FLOW_EOS && !demux->activated_streams) {
2178 GST_ELEMENT_ERROR (demux, STREAM, WRONG_TYPE, (NULL),
2179 ("This doesn't seem to be an ASF file"));
2180 } else if (flow < GST_FLOW_EOS || flow == GST_FLOW_NOT_LINKED) {
2181 /* Post an error. Hopefully something else already has, but if not... */
2182 GST_ELEMENT_FLOW_ERROR (demux, flow);
2183 gst_asf_demux_send_event_unlocked (demux, gst_event_new_eos ());
2192 GST_DEBUG_OBJECT (demux, "Read failed, doh");
2193 flow = GST_FLOW_EOS;
2197 /* See FIXMEs above */
2200 gst_buffer_unref (buf);
2201 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
2202 ("Error parsing ASF packet %u", (guint) demux->packet));
2203 gst_asf_demux_send_event_unlocked (demux, gst_event_new_eos ());
2204 flow = GST_FLOW_ERROR;
2210 #define GST_ASF_DEMUX_CHECK_HEADER_YES 0
2211 #define GST_ASF_DEMUX_CHECK_HEADER_NO 1
2212 #define GST_ASF_DEMUX_CHECK_HEADER_NEED_DATA 2
2215 gst_asf_demux_check_header (GstASFDemux * demux)
2218 guint8 *cdata = (guint8 *) gst_adapter_map (demux->adapter,
2219 ASF_OBJECT_HEADER_SIZE);
2220 if (cdata == NULL) /* need more data */
2221 return GST_ASF_DEMUX_CHECK_HEADER_NEED_DATA;
2223 if (asf_demux_peek_object (demux, cdata, ASF_OBJECT_HEADER_SIZE, &obj, FALSE)
2224 && obj.id == ASF_OBJ_HEADER) {
2225 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);
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:{
3448 uint_val = GST_READ_UINT32_LE (value);
3450 /* this is the track number */
3451 g_value_init (&tag_value, G_TYPE_UINT);
3453 /* WM/Track counts from 0 */
3454 if (!strcmp (name_utf8, "WM/Track"))
3457 g_value_set_uint (&tag_value, uint_val);
3461 case ASF_DEMUX_DATA_TYPE_BOOL:{
3467 bool_val = GST_READ_UINT32_LE (value);
3469 if (strncmp ("Stereoscopic", name_utf8, strlen (name_utf8)) == 0) {
3471 GST_INFO_OBJECT (demux, "This is 3D contents");
3474 GST_INFO_OBJECT (demux, "This is not 3D contenst");
3482 GST_DEBUG ("Skipping tag %s of type %d", gst_tag_name, datatype);
3487 if (G_IS_VALUE (&tag_value)) {
3489 GstTagMergeMode merge_mode = GST_TAG_MERGE_APPEND;
3491 /* WM/TrackNumber is more reliable than WM/Track, since the latter
3492 * is supposed to have a 0 base but is often wrongly written to start
3493 * from 1 as well, so prefer WM/TrackNumber when we have it: either
3494 * replace the value added earlier from WM/Track or put it first in
3495 * the list, so that it will get picked up by _get_uint() */
3496 if (strcmp (name_utf8, "WM/TrackNumber") == 0)
3497 merge_mode = GST_TAG_MERGE_REPLACE;
3499 gst_tag_list_add_values (taglist, merge_mode, gst_tag_name,
3502 GST_DEBUG ("Setting global metadata %s", name_utf8);
3503 gst_structure_set_value (demux->global_metadata, name_utf8,
3507 g_value_unset (&tag_value);
3516 gst_asf_demux_add_global_tags (demux, taglist);
3523 GST_WARNING ("Unexpected end of data parsing ext content desc object");
3524 gst_tag_list_unref (taglist);
3525 return GST_FLOW_OK; /* not really fatal */
3529 static GstStructure *
3530 gst_asf_demux_get_metadata_for_stream (GstASFDemux * demux, guint stream_num)
3535 g_snprintf (sname, sizeof (sname), "stream-%u", stream_num);
3537 for (i = 0; i < gst_caps_get_size (demux->metadata); ++i) {
3540 s = gst_caps_get_structure (demux->metadata, i);
3541 if (gst_structure_has_name (s, sname))
3545 gst_caps_append_structure (demux->metadata, gst_structure_new_empty (sname));
3547 /* try lookup again; demux->metadata took ownership of the structure, so we
3548 * can't really make any assumptions about what happened to it, so we can't
3549 * just return it directly after appending it */
3550 return gst_asf_demux_get_metadata_for_stream (demux, stream_num);
3553 static GstFlowReturn
3554 gst_asf_demux_process_metadata (GstASFDemux * demux, guint8 * data,
3557 guint16 blockcount, i;
3559 GST_INFO_OBJECT (demux, "object is a metadata object");
3561 /* Content Descriptor Count */
3563 goto not_enough_data;
3565 blockcount = gst_asf_demux_get_uint16 (&data, &size);
3567 for (i = 0; i < blockcount; ++i) {
3569 guint16 stream_num, name_len, data_type, lang_idx G_GNUC_UNUSED;
3570 guint32 data_len, ival;
3573 if (size < (2 + 2 + 2 + 2 + 4))
3574 goto not_enough_data;
3576 lang_idx = gst_asf_demux_get_uint16 (&data, &size);
3577 stream_num = gst_asf_demux_get_uint16 (&data, &size);
3578 name_len = gst_asf_demux_get_uint16 (&data, &size);
3579 data_type = gst_asf_demux_get_uint16 (&data, &size);
3580 data_len = gst_asf_demux_get_uint32 (&data, &size);
3582 if (size < name_len + data_len)
3583 goto not_enough_data;
3585 /* convert name to UTF-8 */
3586 name_utf8 = g_convert ((gchar *) data, name_len, "UTF-8", "UTF-16LE",
3588 gst_asf_demux_skip_bytes (name_len, &data, &size);
3590 if (name_utf8 == NULL) {
3591 GST_WARNING ("Failed to convert value name to UTF8, skipping");
3592 gst_asf_demux_skip_bytes (data_len, &data, &size);
3596 if (data_type != ASF_DEMUX_DATA_TYPE_DWORD) {
3597 gst_asf_demux_skip_bytes (data_len, &data, &size);
3605 goto not_enough_data;
3608 ival = gst_asf_demux_get_uint32 (&data, &size);
3610 /* skip anything else there may be, just in case */
3611 gst_asf_demux_skip_bytes (data_len - 4, &data, &size);
3613 s = gst_asf_demux_get_metadata_for_stream (demux, stream_num);
3614 gst_structure_set (s, name_utf8, G_TYPE_INT, ival, NULL);
3618 GST_INFO_OBJECT (demux, "metadata = %" GST_PTR_FORMAT, demux->metadata);
3624 GST_WARNING ("Unexpected end of data parsing metadata object");
3625 return GST_FLOW_OK; /* not really fatal */
3629 static GstFlowReturn
3630 gst_asf_demux_process_header (GstASFDemux * demux, guint8 * data, guint64 size)
3632 GstFlowReturn ret = GST_FLOW_OK;
3633 guint32 i, num_objects;
3634 guint8 unknown G_GNUC_UNUSED;
3636 /* Get the rest of the header's header */
3637 if (size < (4 + 1 + 1))
3638 goto not_enough_data;
3640 num_objects = gst_asf_demux_get_uint32 (&data, &size);
3641 unknown = gst_asf_demux_get_uint8 (&data, &size);
3642 unknown = gst_asf_demux_get_uint8 (&data, &size);
3644 GST_INFO_OBJECT (demux, "object is a header with %u parts", num_objects);
3645 demux->saw_file_header = FALSE;
3646 /* Loop through the header's objects, processing those */
3647 for (i = 0; i < num_objects; ++i) {
3648 GST_INFO_OBJECT (demux, "reading header part %u", i);
3649 ret = gst_asf_demux_process_object (demux, &data, &size);
3650 if (ret != GST_FLOW_OK) {
3651 GST_WARNING ("process_object returned %s", gst_asf_get_flow_name (ret));
3655 if (!demux->saw_file_header) {
3656 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
3657 ("Header does not have mandatory FILE section"));
3658 return GST_FLOW_ERROR;
3665 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
3666 ("short read parsing HEADER object"));
3667 return GST_FLOW_ERROR;
3671 static GstFlowReturn
3672 gst_asf_demux_process_file (GstASFDemux * demux, guint8 * data, guint64 size)
3674 guint64 creation_time G_GNUC_UNUSED;
3675 guint64 file_size G_GNUC_UNUSED;
3676 guint64 send_time G_GNUC_UNUSED;
3677 guint64 packets_count, play_time, preroll;
3678 guint32 flags, min_pktsize, max_pktsize, min_bitrate G_GNUC_UNUSED;
3680 if (size < (16 + 8 + 8 + 8 + 8 + 8 + 8 + 4 + 4 + 4 + 4))
3681 goto not_enough_data;
3683 gst_asf_demux_skip_bytes (16, &data, &size); /* skip GUID */
3684 file_size = gst_asf_demux_get_uint64 (&data, &size);
3685 creation_time = gst_asf_demux_get_uint64 (&data, &size);
3686 packets_count = gst_asf_demux_get_uint64 (&data, &size);
3687 play_time = gst_asf_demux_get_uint64 (&data, &size);
3688 send_time = gst_asf_demux_get_uint64 (&data, &size);
3689 preroll = gst_asf_demux_get_uint64 (&data, &size);
3690 flags = gst_asf_demux_get_uint32 (&data, &size);
3691 min_pktsize = gst_asf_demux_get_uint32 (&data, &size);
3692 max_pktsize = gst_asf_demux_get_uint32 (&data, &size);
3693 min_bitrate = gst_asf_demux_get_uint32 (&data, &size);
3695 demux->broadcast = ! !(flags & 0x01);
3696 demux->seekable = ! !(flags & 0x02);
3698 GST_DEBUG_OBJECT (demux, "min_pktsize = %u", min_pktsize);
3699 GST_DEBUG_OBJECT (demux, "flags::broadcast = %d", demux->broadcast);
3700 GST_DEBUG_OBJECT (demux, "flags::seekable = %d", demux->seekable);
3702 if (demux->broadcast) {
3703 /* these fields are invalid if the broadcast flag is set */
3708 if (min_pktsize != max_pktsize)
3709 goto non_fixed_packet_size;
3711 demux->packet_size = max_pktsize;
3713 /* FIXME: do we need send_time as well? what is it? */
3714 if ((play_time * 100) >= (preroll * GST_MSECOND))
3715 demux->play_time = (play_time * 100) - (preroll * GST_MSECOND);
3717 demux->play_time = 0;
3719 demux->preroll = preroll * GST_MSECOND;
3721 /* initial latency */
3722 demux->latency = demux->preroll;
3724 if (demux->play_time == 0)
3725 demux->seekable = FALSE;
3727 GST_DEBUG_OBJECT (demux, "play_time %" GST_TIME_FORMAT,
3728 GST_TIME_ARGS (demux->play_time));
3729 GST_DEBUG_OBJECT (demux, "preroll %" GST_TIME_FORMAT,
3730 GST_TIME_ARGS (demux->preroll));
3732 if (demux->play_time > 0) {
3733 demux->segment.duration = demux->play_time;
3736 GST_INFO ("object is a file with %" G_GUINT64_FORMAT " data packets",
3738 GST_INFO ("preroll = %" G_GUINT64_FORMAT, demux->preroll);
3740 demux->saw_file_header = TRUE;
3745 non_fixed_packet_size:
3747 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
3748 ("packet size must be fixed"));
3749 return GST_FLOW_ERROR;
3753 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
3754 ("short read parsing FILE object"));
3755 return GST_FLOW_ERROR;
3759 /* Content Description Object */
3760 static GstFlowReturn
3761 gst_asf_demux_process_comment (GstASFDemux * demux, guint8 * data, guint64 size)
3765 const gchar *gst_tag;
3770 GST_TAG_TITLE, 0, NULL}, {
3771 GST_TAG_ARTIST, 0, NULL}, {
3772 GST_TAG_COPYRIGHT, 0, NULL}, {
3773 GST_TAG_DESCRIPTION, 0, NULL}, {
3774 GST_TAG_COMMENT, 0, NULL}
3776 GstTagList *taglist;
3777 GValue value = { 0 };
3781 GST_INFO_OBJECT (demux, "object is a comment");
3783 if (size < (2 + 2 + 2 + 2 + 2))
3784 goto not_enough_data;
3786 tags[0].val_length = gst_asf_demux_get_uint16 (&data, &size);
3787 tags[1].val_length = gst_asf_demux_get_uint16 (&data, &size);
3788 tags[2].val_length = gst_asf_demux_get_uint16 (&data, &size);
3789 tags[3].val_length = gst_asf_demux_get_uint16 (&data, &size);
3790 tags[4].val_length = gst_asf_demux_get_uint16 (&data, &size);
3792 GST_DEBUG_OBJECT (demux, "Comment lengths: title=%d author=%d copyright=%d "
3793 "description=%d rating=%d", tags[0].val_length, tags[1].val_length,
3794 tags[2].val_length, tags[3].val_length, tags[4].val_length);
3796 for (i = 0; i < G_N_ELEMENTS (tags); ++i) {
3797 if (size < tags[i].val_length)
3798 goto not_enough_data;
3800 /* might be just '/0', '/0'... */
3801 if (tags[i].val_length > 2 && tags[i].val_length % 2 == 0) {
3802 /* convert to UTF-8 */
3803 tags[i].val_utf8 = g_convert ((gchar *) data, tags[i].val_length,
3804 "UTF-8", "UTF-16LE", &in, &out, NULL);
3806 gst_asf_demux_skip_bytes (tags[i].val_length, &data, &size);
3809 /* parse metadata into taglist */
3810 taglist = gst_tag_list_new_empty ();
3811 g_value_init (&value, G_TYPE_STRING);
3812 for (i = 0; i < G_N_ELEMENTS (tags); ++i) {
3813 if (tags[i].val_utf8 && strlen (tags[i].val_utf8) > 0 && tags[i].gst_tag) {
3814 g_value_set_string (&value, tags[i].val_utf8);
3815 gst_tag_list_add_values (taglist, GST_TAG_MERGE_APPEND,
3816 tags[i].gst_tag, &value, NULL);
3819 g_value_unset (&value);
3821 gst_asf_demux_add_global_tags (demux, taglist);
3823 for (i = 0; i < G_N_ELEMENTS (tags); ++i)
3824 g_free (tags[i].val_utf8);
3830 GST_WARNING_OBJECT (demux, "unexpectedly short of data while processing "
3831 "comment tag section %d, skipping comment object", i);
3832 for (i = 0; i < G_N_ELEMENTS (tags); i++)
3833 g_free (tags[i].val_utf8);
3834 return GST_FLOW_OK; /* not really fatal */
3838 static GstFlowReturn
3839 gst_asf_demux_process_bitrate_props_object (GstASFDemux * demux, guint8 * data,
3842 guint16 num_streams, i;
3846 goto not_enough_data;
3848 num_streams = gst_asf_demux_get_uint16 (&data, &size);
3850 GST_INFO ("object is a bitrate properties object with %u streams",
3853 if (size < (num_streams * (2 + 4)))
3854 goto not_enough_data;
3856 for (i = 0; i < num_streams; ++i) {
3860 stream_id = gst_asf_demux_get_uint16 (&data, &size);
3861 bitrate = gst_asf_demux_get_uint32 (&data, &size);
3863 if (stream_id < GST_ASF_DEMUX_NUM_STREAM_IDS) {
3864 GST_DEBUG_OBJECT (demux, "bitrate of stream %u = %u", stream_id, bitrate);
3865 stream = gst_asf_demux_get_stream (demux, stream_id);
3867 if (stream->pending_tags == NULL)
3868 stream->pending_tags = gst_tag_list_new_empty ();
3869 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
3870 GST_TAG_BITRATE, bitrate, NULL);
3872 GST_WARNING_OBJECT (demux, "Stream id %u wasn't found", stream_id);
3875 GST_WARNING ("stream id %u is too large", stream_id);
3883 GST_WARNING_OBJECT (demux, "short read parsing bitrate props object!");
3884 return GST_FLOW_OK; /* not really fatal */
3888 static GstFlowReturn
3889 gst_asf_demux_process_header_ext (GstASFDemux * demux, guint8 * data,
3892 GstFlowReturn ret = GST_FLOW_OK;
3895 /* Get the rest of the header's header */
3896 if (size < (16 + 2 + 4))
3897 goto not_enough_data;
3899 /* skip GUID and two other bytes */
3900 gst_asf_demux_skip_bytes (16 + 2, &data, &size);
3901 hdr_size = gst_asf_demux_get_uint32 (&data, &size);
3903 GST_INFO ("extended header object with a size of %u bytes", (guint) size);
3905 /* FIXME: does data_size include the rest of the header that we have read? */
3906 if (hdr_size > size)
3907 goto not_enough_data;
3909 while (hdr_size > 0) {
3910 ret = gst_asf_demux_process_object (demux, &data, &hdr_size);
3911 if (ret != GST_FLOW_OK)
3919 GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
3920 ("short read parsing extended header object"));
3921 return GST_FLOW_ERROR;
3925 static GstFlowReturn
3926 gst_asf_demux_process_language_list (GstASFDemux * demux, guint8 * data,
3932 goto not_enough_data;
3934 if (demux->languages) {
3935 GST_WARNING ("More than one LANGUAGE_LIST object in stream");
3936 g_strfreev (demux->languages);
3937 demux->languages = NULL;
3938 demux->num_languages = 0;
3941 demux->num_languages = gst_asf_demux_get_uint16 (&data, &size);
3942 GST_LOG ("%u languages:", demux->num_languages);
3944 demux->languages = g_new0 (gchar *, demux->num_languages + 1);
3945 for (i = 0; i < demux->num_languages; ++i) {
3946 guint8 len, *lang_data = NULL;
3949 goto not_enough_data;
3950 len = gst_asf_demux_get_uint8 (&data, &size);
3951 if (gst_asf_demux_get_bytes (&lang_data, len, &data, &size)) {
3954 utf8 = g_convert ((gchar *) lang_data, len, "UTF-8", "UTF-16LE", NULL,
3957 /* truncate "en-us" etc. to just "en" */
3958 if (utf8 && strlen (utf8) >= 5 && (utf8[2] == '-' || utf8[2] == '_')) {
3961 GST_DEBUG ("[%u] %s", i, GST_STR_NULL (utf8));
3962 demux->languages[i] = utf8;
3965 goto not_enough_data;
3973 GST_WARNING_OBJECT (demux, "short read parsing language list object!");
3974 g_free (demux->languages);
3975 demux->languages = NULL;
3976 demux->num_languages = 0;
3977 return GST_FLOW_OK; /* not fatal */
3981 static GstFlowReturn
3982 gst_asf_demux_process_simple_index (GstASFDemux * demux, guint8 * data,
3985 GstClockTime interval;
3988 if (size < (16 + 8 + 4 + 4))
3989 goto not_enough_data;
3992 gst_asf_demux_skip_bytes (16, &data, &size);
3993 interval = gst_asf_demux_get_uint64 (&data, &size) * (GstClockTime) 100;
3994 gst_asf_demux_skip_bytes (4, &data, &size);
3995 count = gst_asf_demux_get_uint32 (&data, &size);
3997 demux->sidx_interval = interval;
3998 demux->sidx_num_entries = count;
3999 g_free (demux->sidx_entries);
4000 demux->sidx_entries = g_new0 (AsfSimpleIndexEntry, count);
4002 for (i = 0; i < count; ++i) {
4003 if (G_UNLIKELY (size < 6)) {
4004 /* adjust for broken files, to avoid having entries at the end
4005 * of the parsed index that point to time=0. Resulting in seeking to
4006 * the end of the file leading back to the beginning */
4007 demux->sidx_num_entries -= (count - i);
4010 demux->sidx_entries[i].packet = gst_asf_demux_get_uint32 (&data, &size);
4011 demux->sidx_entries[i].count = gst_asf_demux_get_uint16 (&data, &size);
4012 GST_LOG_OBJECT (demux, "%" GST_TIME_FORMAT " = packet %4u count : %2d",
4013 GST_TIME_ARGS (i * interval), demux->sidx_entries[i].packet,
4014 demux->sidx_entries[i].count);
4017 GST_DEBUG_OBJECT (demux, "simple index object with 0 entries");
4024 GST_WARNING_OBJECT (demux, "short read parsing simple index object!");
4025 return GST_FLOW_OK; /* not fatal */
4029 static GstFlowReturn
4030 gst_asf_demux_process_advanced_mutual_exclusion (GstASFDemux * demux,
4031 guint8 * data, guint64 size)
4036 if (size < 16 + 2 + (2 * 2))
4037 goto not_enough_data;
4039 gst_asf_demux_get_guid (&guid, &data, &size);
4040 num = gst_asf_demux_get_uint16 (&data, &size);
4043 GST_WARNING_OBJECT (demux, "nonsensical mutually exclusive streams count");
4047 if (size < (num * sizeof (guint16)))
4048 goto not_enough_data;
4050 /* read mutually exclusive stream numbers */
4051 for (i = 0; i < num; ++i) {
4053 mes = gst_asf_demux_get_uint16 (&data, &size) & 0x7f;
4054 GST_LOG_OBJECT (demux, "mutually exclusive: stream %d", mes);
4056 demux->mut_ex_streams =
4057 g_slist_append (demux->mut_ex_streams, GINT_TO_POINTER (mes));
4066 GST_WARNING_OBJECT (demux, "short read parsing advanced mutual exclusion");
4067 return GST_FLOW_OK; /* not absolutely fatal */
4072 gst_asf_demux_is_unknown_stream (GstASFDemux * demux, guint stream_num)
4074 return g_slist_find (demux->other_streams,
4075 GINT_TO_POINTER (stream_num)) == NULL;
4078 static GstFlowReturn
4079 gst_asf_demux_process_ext_stream_props (GstASFDemux * demux, guint8 * data,
4082 AsfStreamExtProps esp;
4083 AsfStream *stream = NULL;
4084 AsfObject stream_obj;
4085 guint16 stream_name_count;
4086 guint16 num_payload_ext;
4088 guint8 *stream_obj_data = NULL;
4091 guint i, stream_num;
4094 obj_size = (guint) size;
4096 esp.payload_extensions = NULL;
4099 goto not_enough_data;
4102 esp.start_time = gst_asf_demux_get_uint64 (&data, &size) * GST_MSECOND;
4103 esp.end_time = gst_asf_demux_get_uint64 (&data, &size) * GST_MSECOND;
4104 esp.data_bitrate = gst_asf_demux_get_uint32 (&data, &size);
4105 esp.buffer_size = gst_asf_demux_get_uint32 (&data, &size);
4106 esp.intial_buf_fullness = gst_asf_demux_get_uint32 (&data, &size);
4107 esp.data_bitrate2 = gst_asf_demux_get_uint32 (&data, &size);
4108 esp.buffer_size2 = gst_asf_demux_get_uint32 (&data, &size);
4109 esp.intial_buf_fullness2 = gst_asf_demux_get_uint32 (&data, &size);
4110 esp.max_obj_size = gst_asf_demux_get_uint32 (&data, &size);
4111 esp.flags = gst_asf_demux_get_uint32 (&data, &size);
4112 stream_num = gst_asf_demux_get_uint16 (&data, &size);
4113 esp.lang_idx = gst_asf_demux_get_uint16 (&data, &size);
4114 esp.avg_time_per_frame = gst_asf_demux_get_uint64 (&data, &size);
4115 stream_name_count = gst_asf_demux_get_uint16 (&data, &size);
4116 num_payload_ext = gst_asf_demux_get_uint16 (&data, &size);
4118 GST_INFO ("start_time = %" GST_TIME_FORMAT,
4119 GST_TIME_ARGS (esp.start_time));
4120 GST_INFO ("end_time = %" GST_TIME_FORMAT,
4121 GST_TIME_ARGS (esp.end_time));
4122 GST_INFO ("flags = %08x", esp.flags);
4123 GST_INFO ("average time per frame = %" GST_TIME_FORMAT,
4124 GST_TIME_ARGS (esp.avg_time_per_frame * 100));
4125 GST_INFO ("stream number = %u", stream_num);
4126 GST_INFO ("stream language ID idx = %u (%s)", esp.lang_idx,
4127 (esp.lang_idx < demux->num_languages) ?
4128 GST_STR_NULL (demux->languages[esp.lang_idx]) : "??");
4129 GST_INFO ("stream name count = %u", stream_name_count);
4131 /* read stream names */
4132 for (i = 0; i < stream_name_count; ++i) {
4133 guint16 stream_lang_idx G_GNUC_UNUSED;
4134 gchar *stream_name = NULL;
4137 goto not_enough_data;
4138 stream_lang_idx = gst_asf_demux_get_uint16 (&data, &size);
4139 if (!gst_asf_demux_get_string (&stream_name, NULL, &data, &size))
4140 goto not_enough_data;
4141 GST_INFO ("stream name %d: %s", i, GST_STR_NULL (stream_name));
4142 g_free (stream_name); /* TODO: store names in struct */
4145 /* read payload extension systems stuff */
4146 GST_LOG ("payload extension systems count = %u", num_payload_ext);
4148 if (num_payload_ext > 0)
4149 esp.payload_extensions = g_new0 (AsfPayloadExtension, num_payload_ext + 1);
4151 for (i = 0; i < num_payload_ext; ++i) {
4152 AsfPayloadExtension ext;
4154 guint32 sys_info_len;
4156 if (size < 16 + 2 + 4)
4157 goto not_enough_data;
4159 gst_asf_demux_get_guid (&ext_guid, &data, &size);
4160 ext.id = gst_asf_demux_identify_guid (asf_payload_ext_guids, &ext_guid);
4161 ext.len = gst_asf_demux_get_uint16 (&data, &size);
4163 sys_info_len = gst_asf_demux_get_uint32 (&data, &size);
4164 GST_LOG ("payload systems info len = %u", sys_info_len);
4165 if (!gst_asf_demux_skip_bytes (sys_info_len, &data, &size))
4166 goto not_enough_data;
4168 esp.payload_extensions[i] = ext;
4171 GST_LOG ("bytes read: %u/%u", (guint) (data - data_start), obj_size);
4173 /* there might be an optional STREAM_INFO object here now; if not, we
4174 * should have parsed the corresponding stream info object already (since
4175 * we are parsing the extended stream properties objects delayed) */
4177 stream = gst_asf_demux_get_stream (demux, stream_num);
4181 if (size < ASF_OBJECT_HEADER_SIZE)
4182 goto not_enough_data;
4184 /* get size of the stream object */
4185 if (!asf_demux_peek_object (demux, data, size, &stream_obj, TRUE))
4186 goto corrupted_stream;
4188 if (stream_obj.id != ASF_OBJ_STREAM)
4189 goto expected_stream_object;
4191 if (stream_obj.size < ASF_OBJECT_HEADER_SIZE ||
4192 stream_obj.size > (10 * 1024 * 1024))
4193 goto not_enough_data;
4195 gst_asf_demux_skip_bytes (ASF_OBJECT_HEADER_SIZE, &data, &size);
4197 /* process this stream object later after all the other 'normal' ones
4198 * have been processed (since the others are more important/non-hidden) */
4199 len = stream_obj.size - ASF_OBJECT_HEADER_SIZE;
4200 if (!gst_asf_demux_get_bytes (&stream_obj_data, len, &data, &size))
4201 goto not_enough_data;
4203 /* parse stream object */
4204 stream = gst_asf_demux_parse_stream_object (demux, stream_obj_data, len);
4205 g_free (stream_obj_data);
4210 stream->ext_props = esp;
4212 /* try to set the framerate */
4213 if (stream->is_video && stream->caps) {
4214 GValue framerate = { 0 };
4218 g_value_init (&framerate, GST_TYPE_FRACTION);
4220 num = GST_SECOND / 100;
4221 denom = esp.avg_time_per_frame;
4223 /* avoid division by 0, assume 25/1 framerate */
4224 denom = GST_SECOND / 2500;
4227 gst_value_set_fraction (&framerate, num, denom);
4229 stream->caps = gst_caps_make_writable (stream->caps);
4230 s = gst_caps_get_structure (stream->caps, 0);
4231 gst_structure_set_value (s, "framerate", &framerate);
4232 g_value_unset (&framerate);
4233 GST_DEBUG_OBJECT (demux, "setting framerate of %d/%d = %f",
4234 num, denom, ((gdouble) num) / denom);
4237 /* add language info now if we have it */
4238 if (stream->ext_props.lang_idx < demux->num_languages) {
4239 if (stream->pending_tags == NULL)
4240 stream->pending_tags = gst_tag_list_new_empty ();
4241 GST_LOG_OBJECT (demux, "stream %u has language '%s'", stream->id,
4242 demux->languages[stream->ext_props.lang_idx]);
4243 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_APPEND,
4244 GST_TAG_LANGUAGE_CODE, demux->languages[stream->ext_props.lang_idx],
4247 } else if (gst_asf_demux_is_unknown_stream (demux, stream_num)) {
4248 GST_WARNING_OBJECT (demux, "Ext. stream properties for unknown stream");
4252 g_free (esp.payload_extensions);
4259 GST_WARNING_OBJECT (demux, "short read parsing ext stream props object!");
4260 g_free (esp.payload_extensions);
4261 return GST_FLOW_OK; /* not absolutely fatal */
4263 expected_stream_object:
4265 GST_WARNING_OBJECT (demux, "error parsing extended stream properties "
4266 "object: expected embedded stream object, but got %s object instead!",
4267 gst_asf_get_guid_nick (asf_object_guids, stream_obj.id));
4268 g_free (esp.payload_extensions);
4269 return GST_FLOW_OK; /* not absolutely fatal */
4273 GST_WARNING_OBJECT (demux, "Corrupted stream");
4274 g_free (esp.payload_extensions);
4275 return GST_FLOW_ERROR;
4279 static const gchar *
4280 gst_asf_demux_push_obj (GstASFDemux * demux, guint32 obj_id)
4284 nick = gst_asf_get_guid_nick (asf_object_guids, obj_id);
4285 if (g_str_has_prefix (nick, "ASF_OBJ_"))
4286 nick += strlen ("ASF_OBJ_");
4288 if (demux->objpath == NULL) {
4289 demux->objpath = g_strdup (nick);
4293 newpath = g_strdup_printf ("%s/%s", demux->objpath, nick);
4294 g_free (demux->objpath);
4295 demux->objpath = newpath;
4298 return (const gchar *) demux->objpath;
4302 gst_asf_demux_pop_obj (GstASFDemux * demux)
4306 if ((s = g_strrstr (demux->objpath, "/"))) {
4309 g_free (demux->objpath);
4310 demux->objpath = NULL;
4315 gst_asf_demux_process_queued_extended_stream_objects (GstASFDemux * demux)
4320 /* Parse the queued extended stream property objects and add the info
4321 * to the existing streams or add the new embedded streams, but without
4322 * activating them yet */
4323 GST_LOG_OBJECT (demux, "%u queued extended stream properties objects",
4324 g_slist_length (demux->ext_stream_props));
4326 for (l = demux->ext_stream_props, i = 0; l != NULL; l = l->next, ++i) {
4327 GstBuffer *buf = GST_BUFFER (l->data);
4330 gst_buffer_map (buf, &map, GST_MAP_READ);
4332 GST_LOG_OBJECT (demux, "parsing ext. stream properties object #%u", i);
4333 gst_asf_demux_process_ext_stream_props (demux, map.data, map.size);
4334 gst_buffer_unmap (buf, &map);
4335 gst_buffer_unref (buf);
4337 g_slist_free (demux->ext_stream_props);
4338 demux->ext_stream_props = NULL;
4343 gst_asf_demux_activate_ext_props_streams (GstASFDemux * demux)
4347 for (i = 0; i < demux->num_streams; ++i) {
4352 stream = &demux->stream[i];
4354 GST_LOG_OBJECT (demux, "checking stream %2u", stream->id);
4356 if (stream->active) {
4357 GST_LOG_OBJECT (demux, "stream %2u is already activated", stream->id);
4362 for (x = demux->mut_ex_streams; x != NULL; x = x->next) {
4365 /* check for each mutual exclusion whether it affects this stream */
4366 for (mes = (guint8 *) x->data; mes != NULL && *mes != 0xff; ++mes) {
4367 if (*mes == stream->id) {
4368 /* if yes, check if we've already added streams that are mutually
4369 * exclusive with the stream we're about to add */
4370 for (mes = (guint8 *) x->data; mes != NULL && *mes != 0xff; ++mes) {
4371 for (j = 0; j < demux->num_streams; ++j) {
4372 /* if the broadcast flag is set, assume the hidden streams aren't
4373 * actually streamed and hide them (or playbin won't work right),
4374 * otherwise assume their data is available */
4375 if (demux->stream[j].id == *mes && demux->broadcast) {
4377 GST_LOG_OBJECT (demux, "broadcast stream ID %d to be added is "
4378 "mutually exclusive with already existing stream ID %d, "
4379 "hiding stream", stream->id, demux->stream[j].id);
4391 /* FIXME: we should do stream activation based on preroll data in
4392 * streaming mode too */
4393 if (demux->streaming && !is_hidden)
4394 gst_asf_demux_activate_stream (demux, stream);
4399 static GstFlowReturn
4400 gst_asf_demux_process_object (GstASFDemux * demux, guint8 ** p_data,
4403 GstFlowReturn ret = GST_FLOW_OK;
4405 guint64 obj_data_size;
4407 if (*p_size < ASF_OBJECT_HEADER_SIZE)
4408 return ASF_FLOW_NEED_MORE_DATA;
4410 if (!asf_demux_peek_object (demux, *p_data, ASF_OBJECT_HEADER_SIZE, &obj,
4412 return GST_FLOW_ERROR;
4413 gst_asf_demux_skip_bytes (ASF_OBJECT_HEADER_SIZE, p_data, p_size);
4415 obj_data_size = obj.size - ASF_OBJECT_HEADER_SIZE;
4417 if (*p_size < obj_data_size)
4418 return ASF_FLOW_NEED_MORE_DATA;
4420 gst_asf_demux_push_obj (demux, obj.id);
4422 GST_INFO ("%s: size %" G_GUINT64_FORMAT, demux->objpath, obj.size);
4425 case ASF_OBJ_STREAM:
4426 gst_asf_demux_parse_stream_object (demux, *p_data, obj_data_size);
4430 ret = gst_asf_demux_process_file (demux, *p_data, obj_data_size);
4432 case ASF_OBJ_HEADER:
4433 ret = gst_asf_demux_process_header (demux, *p_data, obj_data_size);
4435 case ASF_OBJ_COMMENT:
4436 ret = gst_asf_demux_process_comment (demux, *p_data, obj_data_size);
4439 ret = gst_asf_demux_process_header_ext (demux, *p_data, obj_data_size);
4441 case ASF_OBJ_BITRATE_PROPS:
4443 gst_asf_demux_process_bitrate_props_object (demux, *p_data,
4446 case ASF_OBJ_EXT_CONTENT_DESC:
4448 gst_asf_demux_process_ext_content_desc (demux, *p_data,
4451 case ASF_OBJ_METADATA_OBJECT:
4452 ret = gst_asf_demux_process_metadata (demux, *p_data, obj_data_size);
4454 case ASF_OBJ_EXTENDED_STREAM_PROPS:{
4457 /* process these later, we might not have parsed the corresponding
4458 * stream object yet */
4459 GST_LOG ("%s: queued for later parsing", demux->objpath);
4460 buf = gst_buffer_new_and_alloc (obj_data_size);
4461 gst_buffer_fill (buf, 0, *p_data, obj_data_size);
4462 demux->ext_stream_props = g_slist_append (demux->ext_stream_props, buf);
4466 case ASF_OBJ_LANGUAGE_LIST:
4467 ret = gst_asf_demux_process_language_list (demux, *p_data, obj_data_size);
4469 case ASF_OBJ_ADVANCED_MUTUAL_EXCLUSION:
4470 ret = gst_asf_demux_process_advanced_mutual_exclusion (demux, *p_data,
4473 case ASF_OBJ_SIMPLE_INDEX:
4474 ret = gst_asf_demux_process_simple_index (demux, *p_data, obj_data_size);
4476 case ASF_OBJ_CONTENT_ENCRYPTION:
4477 case ASF_OBJ_EXT_CONTENT_ENCRYPTION:
4478 case ASF_OBJ_DIGITAL_SIGNATURE_OBJECT:
4479 case ASF_OBJ_UNKNOWN_ENCRYPTION_OBJECT:
4480 goto error_encrypted;
4481 case ASF_OBJ_CONCEAL_NONE:
4483 case ASF_OBJ_UNDEFINED:
4484 case ASF_OBJ_CODEC_COMMENT:
4486 case ASF_OBJ_PADDING:
4487 case ASF_OBJ_BITRATE_MUTEX:
4488 case ASF_OBJ_COMPATIBILITY:
4489 case ASF_OBJ_INDEX_PLACEHOLDER:
4490 case ASF_OBJ_INDEX_PARAMETERS:
4491 case ASF_OBJ_STREAM_PRIORITIZATION:
4492 case ASF_OBJ_SCRIPT_COMMAND:
4493 case ASF_OBJ_METADATA_LIBRARY_OBJECT:
4495 /* Unknown/unhandled object, skip it and hope for the best */
4496 GST_INFO ("%s: skipping object", demux->objpath);
4501 /* this can't fail, we checked the number of bytes available before */
4502 gst_asf_demux_skip_bytes (obj_data_size, p_data, p_size);
4504 GST_LOG ("%s: ret = %s", demux->objpath, gst_asf_get_flow_name (ret));
4506 gst_asf_demux_pop_obj (demux);
4513 GST_ELEMENT_ERROR (demux, STREAM, DECRYPT, (NULL), (NULL));
4514 return GST_FLOW_ERROR;
4519 gst_asf_demux_descramble_buffer (GstASFDemux * demux, AsfStream * stream,
4520 GstBuffer ** p_buffer)
4522 GstBuffer *descrambled_buffer;
4523 GstBuffer *scrambled_buffer;
4524 GstBuffer *sub_buffer;
4531 /* descrambled_buffer is initialised in the first iteration */
4532 descrambled_buffer = NULL;
4533 scrambled_buffer = *p_buffer;
4535 if (gst_buffer_get_size (scrambled_buffer) <
4536 stream->ds_packet_size * stream->span)
4539 for (offset = 0; offset < gst_buffer_get_size (scrambled_buffer);
4540 offset += stream->ds_chunk_size) {
4541 off = offset / stream->ds_chunk_size;
4542 row = off / stream->span;
4543 col = off % stream->span;
4544 idx = row + col * stream->ds_packet_size / stream->ds_chunk_size;
4545 GST_DEBUG ("idx=%u, row=%u, col=%u, off=%u, ds_chunk_size=%u", idx, row,
4546 col, off, stream->ds_chunk_size);
4547 GST_DEBUG ("scrambled buffer size=%" G_GSIZE_FORMAT
4548 ", span=%u, packet_size=%u", gst_buffer_get_size (scrambled_buffer),
4549 stream->span, stream->ds_packet_size);
4550 GST_DEBUG ("gst_buffer_get_size (scrambled_buffer) = %" G_GSIZE_FORMAT,
4551 gst_buffer_get_size (scrambled_buffer));
4553 gst_buffer_copy_region (scrambled_buffer, GST_BUFFER_COPY_MEMORY,
4554 idx * stream->ds_chunk_size, stream->ds_chunk_size);
4556 descrambled_buffer = sub_buffer;
4558 descrambled_buffer = gst_buffer_append (descrambled_buffer, sub_buffer);
4562 GST_BUFFER_TIMESTAMP (descrambled_buffer) =
4563 GST_BUFFER_TIMESTAMP (scrambled_buffer);
4564 GST_BUFFER_DURATION (descrambled_buffer) =
4565 GST_BUFFER_DURATION (scrambled_buffer);
4566 GST_BUFFER_OFFSET (descrambled_buffer) = GST_BUFFER_OFFSET (scrambled_buffer);
4567 GST_BUFFER_OFFSET_END (descrambled_buffer) =
4568 GST_BUFFER_OFFSET_END (scrambled_buffer);
4570 /* FIXME/CHECK: do we need to transfer buffer flags here too? */
4572 gst_buffer_unref (scrambled_buffer);
4573 *p_buffer = descrambled_buffer;
4577 gst_asf_demux_element_send_event (GstElement * element, GstEvent * event)
4579 GstASFDemux *demux = GST_ASF_DEMUX (element);
4582 GST_DEBUG ("handling element event of type %s", GST_EVENT_TYPE_NAME (event));
4584 for (i = 0; i < demux->num_streams; ++i) {
4585 gst_event_ref (event);
4586 if (gst_asf_demux_handle_src_event (demux->stream[i].pad,
4587 GST_OBJECT_CAST (element), event)) {
4588 gst_event_unref (event);
4593 gst_event_unref (event);
4597 /* takes ownership of the passed event */
4599 gst_asf_demux_send_event_unlocked (GstASFDemux * demux, GstEvent * event)
4601 gboolean ret = TRUE;
4604 GST_DEBUG_OBJECT (demux, "sending %s event to all source pads",
4605 GST_EVENT_TYPE_NAME (event));
4607 for (i = 0; i < demux->num_streams; ++i) {
4608 gst_event_ref (event);
4609 ret &= gst_pad_push_event (demux->stream[i].pad, event);
4611 gst_event_unref (event);
4616 gst_asf_demux_handle_src_query (GstPad * pad, GstObject * parent,
4620 gboolean res = FALSE;
4622 demux = GST_ASF_DEMUX (parent);
4624 GST_DEBUG ("handling %s query",
4625 gst_query_type_get_name (GST_QUERY_TYPE (query)));
4627 switch (GST_QUERY_TYPE (query)) {
4628 case GST_QUERY_DURATION:
4632 gst_query_parse_duration (query, &format, NULL);
4634 if (format != GST_FORMAT_TIME) {
4635 GST_LOG ("only support duration queries in TIME format");
4639 res = gst_pad_query_default (pad, parent, query);
4641 GST_OBJECT_LOCK (demux);
4643 if (demux->segment.duration != GST_CLOCK_TIME_NONE) {
4644 GST_LOG ("returning duration: %" GST_TIME_FORMAT,
4645 GST_TIME_ARGS (demux->segment.duration));
4647 gst_query_set_duration (query, GST_FORMAT_TIME,
4648 demux->segment.duration);
4652 GST_LOG ("duration not known yet");
4655 GST_OBJECT_UNLOCK (demux);
4660 case GST_QUERY_POSITION:{
4663 gst_query_parse_position (query, &format, NULL);
4665 if (format != GST_FORMAT_TIME) {
4666 GST_LOG ("only support position queries in TIME format");
4670 GST_OBJECT_LOCK (demux);
4672 if (demux->segment.position != GST_CLOCK_TIME_NONE) {
4673 GST_LOG ("returning position: %" GST_TIME_FORMAT,
4674 GST_TIME_ARGS (demux->segment.position));
4676 gst_query_set_position (query, GST_FORMAT_TIME,
4677 demux->segment.position);
4681 GST_LOG ("position not known yet");
4684 GST_OBJECT_UNLOCK (demux);
4688 case GST_QUERY_SEEKING:{
4691 gst_query_parse_seeking (query, &format, NULL, NULL, NULL);
4692 if (format == GST_FORMAT_TIME) {
4695 GST_OBJECT_LOCK (demux);
4696 duration = demux->segment.duration;
4697 GST_OBJECT_UNLOCK (demux);
4699 if (!demux->streaming || !demux->seekable) {
4700 gst_query_set_seeking (query, GST_FORMAT_TIME, demux->seekable, 0,
4707 /* try upstream first in TIME */
4708 res = gst_pad_query_default (pad, parent, query);
4710 gst_query_parse_seeking (query, &fmt, &seekable, NULL, NULL);
4711 GST_LOG_OBJECT (demux, "upstream %s seekable %d",
4712 GST_STR_NULL (gst_format_get_name (fmt)), seekable);
4713 /* if no luck, maybe in BYTES */
4714 if (!seekable || fmt != GST_FORMAT_TIME) {
4717 q = gst_query_new_seeking (GST_FORMAT_BYTES);
4718 if ((res = gst_pad_peer_query (demux->sinkpad, q))) {
4719 gst_query_parse_seeking (q, &fmt, &seekable, NULL, NULL);
4720 GST_LOG_OBJECT (demux, "upstream %s seekable %d",
4721 GST_STR_NULL (gst_format_get_name (fmt)), seekable);
4722 if (fmt != GST_FORMAT_BYTES)
4725 gst_query_unref (q);
4726 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable, 0,
4732 GST_LOG_OBJECT (demux, "only support seeking in TIME format");
4736 case GST_QUERY_LATENCY:
4739 GstClockTime min, max;
4741 /* preroll delay does not matter in non-live pipeline,
4742 * but we might end up in a live (rtsp) one ... */
4745 res = gst_pad_query_default (pad, parent, query);
4749 gst_query_parse_latency (query, &live, &min, &max);
4751 GST_DEBUG_OBJECT (demux, "Peer latency: live %d, min %"
4752 GST_TIME_FORMAT " max %" GST_TIME_FORMAT, live,
4753 GST_TIME_ARGS (min), GST_TIME_ARGS (max));
4755 GST_OBJECT_LOCK (demux);
4756 min += demux->latency;
4758 max += demux->latency;
4759 GST_OBJECT_UNLOCK (demux);
4761 gst_query_set_latency (query, live, min, max);
4764 case GST_QUERY_SEGMENT:
4769 format = demux->segment.format;
4772 gst_segment_to_stream_time (&demux->segment, format,
4773 demux->segment.start);
4774 if ((stop = demux->segment.stop) == -1)
4775 stop = demux->segment.duration;
4777 stop = gst_segment_to_stream_time (&demux->segment, format, stop);
4779 gst_query_set_segment (query, demux->segment.rate, format, start, stop);
4784 res = gst_pad_query_default (pad, parent, query);
4791 static GstStateChangeReturn
4792 gst_asf_demux_change_state (GstElement * element, GstStateChange transition)
4794 GstASFDemux *demux = GST_ASF_DEMUX (element);
4795 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
4797 switch (transition) {
4798 case GST_STATE_CHANGE_NULL_TO_READY:{
4799 gst_segment_init (&demux->segment, GST_FORMAT_TIME);
4800 demux->need_newsegment = TRUE;
4801 demux->segment_running = FALSE;
4802 demux->keyunit_sync = FALSE;
4803 demux->accurate = FALSE;
4804 demux->adapter = gst_adapter_new ();
4805 demux->metadata = gst_caps_new_empty ();
4806 demux->global_metadata = gst_structure_new_empty ("metadata");
4807 demux->data_size = 0;
4808 demux->data_offset = 0;
4809 demux->index_offset = 0;
4810 demux->base_offset = 0;
4811 demux->flowcombiner = gst_flow_combiner_new ();
4819 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
4820 if (ret == GST_STATE_CHANGE_FAILURE)
4823 switch (transition) {
4824 case GST_STATE_CHANGE_PAUSED_TO_READY:
4825 gst_asf_demux_reset (demux, FALSE);
4828 case GST_STATE_CHANGE_READY_TO_NULL:
4829 gst_asf_demux_reset (demux, FALSE);
4830 gst_flow_combiner_free (demux->flowcombiner);
4831 demux->flowcombiner = NULL;