1 /* GStreamer RealMedia demuxer
2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2003> David A. Schleef <ds@schleef.org>
4 * Copyright (C) <2004> Stephane Loeuillet <gstreamer@leroutier.net>
5 * Copyright (C) <2005> Owen Fraser-Green <owen@discobabe.net>
6 * Copyright (C) <2005> Michael Smith <fluendo.com>
7 * Copyright (C) <2006> Wim Taymans <wim@fluendo.com>
8 * Copyright (C) <2006> Tim-Philipp Müller <tim centricular net>
9 * Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Library General Public
13 * License as published by the Free Software Foundation; either
14 * version 2 of the License, or (at your option) any later version.
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Library General Public License for more details.
21 * You should have received a copy of the GNU Library General Public
22 * License along with this library; if not, write to the
23 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 * Boston, MA 02111-1307, USA.
33 #include "rdtmanager.h"
41 #define RMDEMUX_GUINT32_GET(a) GST_READ_UINT32_BE(a)
42 #define RMDEMUX_GUINT16_GET(a) GST_READ_UINT16_BE(a)
43 #define RMDEMUX_FOURCC_GET(a) GST_READ_UINT32_LE(a)
44 #define HEADER_SIZE 10
49 typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
51 struct _GstRMDemuxStream
60 GstFlowReturn last_flow;
65 GstRMDemuxIndex *index;
67 gint framerate_numerator;
68 gint framerate_denominator;
74 guint16 rate; /* samplerate */
75 guint16 n_channels; /* channels */
76 guint16 sample_width; /* bits_per_sample */
77 guint16 leaf_size; /* subpacket_size */
78 guint32 packet_size; /* coded_frame_size */
80 guint32 extra_data_size; /* codec_data_length */
81 guint8 *extra_data; /* extras */
83 gboolean needs_descrambling;
84 guint subpackets_needed; /* subpackets needed for descrambling */
85 GPtrArray *subpackets; /* array containing subpacket GstBuffers */
87 /* Variables needed for fixing timestamps. */
88 GstClockTime next_ts, last_ts;
89 guint16 next_seq, last_seq;
96 guint frag_offset[MAX_FRAGS];
99 GstTagList *pending_tags;
102 struct _GstRMDemuxIndex
105 GstClockTime timestamp;
108 static GstElementDetails gst_rmdemux_details = {
111 "Demultiplex a RealMedia file into audio and video streams",
112 "David Schleef <ds@schleef.org>"
115 static GstStaticPadTemplate gst_rmdemux_sink_template =
116 GST_STATIC_PAD_TEMPLATE ("sink",
119 GST_STATIC_CAPS ("application/vnd.rn-realmedia")
122 static GstStaticPadTemplate gst_rmdemux_videosrc_template =
123 GST_STATIC_PAD_TEMPLATE ("video_%02d",
126 GST_STATIC_CAPS_ANY);
128 static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
129 GST_STATIC_PAD_TEMPLATE ("audio_%02d",
132 GST_STATIC_CAPS_ANY);
134 GST_DEBUG_CATEGORY_STATIC (rmdemux_debug);
135 #define GST_CAT_DEFAULT rmdemux_debug
137 static GstElementClass *parent_class = NULL;
139 static void gst_rmdemux_class_init (GstRMDemuxClass * klass);
140 static void gst_rmdemux_base_init (GstRMDemuxClass * klass);
141 static void gst_rmdemux_init (GstRMDemux * rmdemux);
142 static void gst_rmdemux_finalize (GObject * object);
143 static GstStateChangeReturn gst_rmdemux_change_state (GstElement * element,
144 GstStateChange transition);
145 static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer);
146 static void gst_rmdemux_loop (GstPad * pad);
147 static gboolean gst_rmdemux_sink_activate (GstPad * sinkpad);
148 static gboolean gst_rmdemux_sink_activate_push (GstPad * sinkpad,
150 static gboolean gst_rmdemux_sink_activate_pull (GstPad * sinkpad,
152 static gboolean gst_rmdemux_sink_event (GstPad * pad, GstEvent * event);
153 static gboolean gst_rmdemux_src_event (GstPad * pad, GstEvent * event);
154 static void gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event);
155 static const GstQueryType *gst_rmdemux_src_query_types (GstPad * pad);
156 static gboolean gst_rmdemux_src_query (GstPad * pad, GstQuery * query);
157 static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux,
160 static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data,
162 static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data,
164 static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux,
165 const guint8 * data, int length);
166 static guint gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data,
168 static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data,
170 static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data,
172 static GstFlowReturn gst_rmdemux_parse_packet (GstRMDemux * rmdemux,
173 GstBuffer * in, guint16 version);
174 static void gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux,
175 const guint8 * data, int length);
176 static void gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
177 GstRMDemuxStream * stream);
178 static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
182 gst_rmdemux_get_type (void)
184 static GType rmdemux_type = 0;
187 static const GTypeInfo rmdemux_info = {
188 sizeof (GstRMDemuxClass),
189 (GBaseInitFunc) gst_rmdemux_base_init, NULL,
190 (GClassInitFunc) gst_rmdemux_class_init,
191 NULL, NULL, sizeof (GstRMDemux), 0,
192 (GInstanceInitFunc) gst_rmdemux_init,
196 g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
203 gst_rmdemux_base_init (GstRMDemuxClass * klass)
205 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
207 gst_element_class_add_pad_template (element_class,
208 gst_static_pad_template_get (&gst_rmdemux_sink_template));
209 gst_element_class_add_pad_template (element_class,
210 gst_static_pad_template_get (&gst_rmdemux_videosrc_template));
211 gst_element_class_add_pad_template (element_class,
212 gst_static_pad_template_get (&gst_rmdemux_audiosrc_template));
213 gst_element_class_set_details (element_class, &gst_rmdemux_details);
217 gst_rmdemux_class_init (GstRMDemuxClass * klass)
219 GObjectClass *gobject_class;
220 GstElementClass *gstelement_class;
222 gobject_class = (GObjectClass *) klass;
223 gstelement_class = (GstElementClass *) klass;
225 parent_class = g_type_class_peek_parent (klass);
227 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rmdemux_change_state);
229 GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
230 0, "Demuxer for Realmedia streams");
232 gobject_class->finalize = gst_rmdemux_finalize;
236 gst_rmdemux_finalize (GObject * object)
238 GstRMDemux *rmdemux = GST_RMDEMUX (object);
240 if (rmdemux->adapter) {
241 g_object_unref (rmdemux->adapter);
242 rmdemux->adapter = NULL;
245 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
249 gst_rmdemux_init (GstRMDemux * rmdemux)
252 gst_pad_new_from_static_template (&gst_rmdemux_sink_template, "sink");
253 gst_pad_set_event_function (rmdemux->sinkpad,
254 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_event));
255 gst_pad_set_chain_function (rmdemux->sinkpad,
256 GST_DEBUG_FUNCPTR (gst_rmdemux_chain));
257 gst_pad_set_activate_function (rmdemux->sinkpad,
258 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate));
259 gst_pad_set_activatepull_function (rmdemux->sinkpad,
260 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_pull));
261 gst_pad_set_activatepush_function (rmdemux->sinkpad,
262 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_push));
264 gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
266 rmdemux->adapter = gst_adapter_new ();
267 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
268 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
269 rmdemux->need_newsegment = TRUE;
273 gst_rmdemux_sink_event (GstPad * pad, GstEvent * event)
278 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
280 GST_LOG_OBJECT (pad, "%s event", GST_EVENT_TYPE_NAME (event));
282 switch (GST_EVENT_TYPE (event)) {
283 case GST_EVENT_NEWSEGMENT:
284 gst_event_unref (event);
288 ret = gst_pad_event_default (pad, event);
292 gst_object_unref (rmdemux);
297 gst_rmdemux_src_event (GstPad * pad, GstEvent * event)
301 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
303 GST_LOG_OBJECT (rmdemux, "handling src event");
305 switch (GST_EVENT_TYPE (event)) {
310 GST_LOG_OBJECT (rmdemux, "Event on src: SEEK");
311 /* can't seek if we are not seekable, FIXME could pass the
312 * seek query upstream after converting it to bytes using
313 * the average bitrate of the stream. */
314 if (!rmdemux->seekable) {
316 GST_DEBUG ("seek on non seekable stream");
320 GST_OBJECT_LOCK (rmdemux);
321 /* check if we can do the seek now */
322 running = rmdemux->running;
323 GST_OBJECT_UNLOCK (rmdemux);
325 /* now do the seek */
327 ret = gst_rmdemux_perform_seek (rmdemux, event);
331 gst_event_unref (event);
335 GST_LOG_OBJECT (rmdemux, "Event on src: type=%d", GST_EVENT_TYPE (event));
336 ret = gst_pad_event_default (pad, event);
343 GST_DEBUG ("error handling event");
344 gst_event_unref (event);
348 /* Validate that this looks like a reasonable point to seek to */
350 gst_rmdemux_validate_offset (GstRMDemux * rmdemux)
353 GstFlowReturn flowret;
354 guint16 version, length;
357 flowret = gst_pad_pull_range (rmdemux->sinkpad, rmdemux->offset, 4, &buffer);
359 if (flowret != GST_FLOW_OK) {
360 GST_DEBUG_OBJECT (rmdemux, "Failed to pull data at offset %d",
364 /* TODO: Can we also be seeking to a 'DATA' chunk header? Check this.
365 * Also, for the case we currently handle, can we check any more? It's pretty
366 * sucky to not be validating a little more heavily than this... */
367 /* This should now be the start of a data packet header. That begins with
368 * a 2-byte 'version' field, which has to be 0 or 1, then a length. I'm not
369 * certain what values are valid for length, but it must always be at least
370 * 4 bytes, and we can check that it won't take us past our known total size
373 version = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer));
374 if (version != 0 && version != 1) {
375 GST_DEBUG_OBJECT (rmdemux, "Expected version 0 or 1, got %d",
380 length = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer) + 2);
381 /* TODO: Also check against total stream length */
383 GST_DEBUG_OBJECT (rmdemux, "Expected length >= 4, got %d", (int) length);
388 rmdemux->offset += 4;
389 gst_adapter_clear (rmdemux->adapter);
390 gst_adapter_push (rmdemux->adapter, buffer);
392 GST_WARNING_OBJECT (rmdemux, "Failed to validate seek offset at %d",
400 find_seek_offset_bytes (GstRMDemux * rmdemux, guint target)
404 gboolean ret = FALSE;
409 for (cur = rmdemux->streams; cur; cur = cur->next) {
410 GstRMDemuxStream *stream = cur->data;
412 /* Search backwards through this stream's index until we find the first
413 * timestamp before our target time */
414 for (i = stream->index_length - 1; i >= 0; i--) {
415 if (stream->index[i].offset <= target) {
416 /* Set the seek_offset for the stream so we don't bother parsing it
417 * until we've passed that point */
418 stream->seek_offset = stream->index[i].offset;
419 rmdemux->offset = stream->index[i].offset;
429 find_seek_offset_time (GstRMDemux * rmdemux, GstClockTime time)
432 gboolean ret = FALSE;
434 GstClockTime earliest = GST_CLOCK_TIME_NONE;
437 for (cur = rmdemux->streams; cur; cur = cur->next, n_stream++) {
438 GstRMDemuxStream *stream = cur->data;
440 /* Search backwards through this stream's index until we find the first
441 * timestamp before our target time */
442 for (i = stream->index_length - 1; i >= 0; i--) {
443 if (stream->index[i].timestamp <= time) {
444 /* Set the seek_offset for the stream so we don't bother parsing it
445 * until we've passed that point */
446 stream->seek_offset = stream->index[i].offset;
448 /* If it's also the earliest timestamp we've seen of all streams, then
451 if (earliest == GST_CLOCK_TIME_NONE ||
452 stream->index[i].timestamp < earliest) {
453 earliest = stream->index[i].timestamp;
454 rmdemux->offset = stream->index[i].offset;
455 GST_DEBUG_OBJECT (rmdemux,
456 "We're looking for %" GST_TIME_FORMAT
457 " and we found that stream %d has the latest index at %"
458 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start), n_stream,
459 GST_TIME_ARGS (earliest));
467 stream->discont = TRUE;
473 gst_rmdemux_perform_seek (GstRMDemux * rmdemux, GstEvent * event)
477 gboolean flush, accurate;
481 GstSeekType cur_type, stop_type;
486 GST_DEBUG_OBJECT (rmdemux, "seek with event");
488 gst_event_parse_seek (event, &rate, &format, &flags,
489 &cur_type, &cur, &stop_type, &stop);
491 /* we can only seek on time */
492 if (format != GST_FORMAT_TIME) {
493 GST_DEBUG_OBJECT (rmdemux, "can only seek on TIME");
496 /* cannot yet do backwards playback */
498 GST_DEBUG_OBJECT (rmdemux, "can only seek with positive rate, not %lf",
503 GST_DEBUG_OBJECT (rmdemux, "seek without event");
509 GST_DEBUG_OBJECT (rmdemux, "seek, rate %g", rate);
511 flush = flags & GST_SEEK_FLAG_FLUSH;
512 accurate = flags & GST_SEEK_FLAG_ACCURATE;
514 /* first step is to unlock the streaming thread if it is
515 * blocked in a chain call, we do this by starting the flush. */
517 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_start ());
518 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_start ());
520 gst_pad_pause_task (rmdemux->sinkpad);
523 GST_LOG_OBJECT (rmdemux, "Done starting flushes");
525 /* now grab the stream lock so that streaming cannot continue, for
526 * non flushing seeks when the element is in PAUSED this could block
528 GST_PAD_STREAM_LOCK (rmdemux->sinkpad);
530 GST_LOG_OBJECT (rmdemux, "Took streamlock");
532 /* close current segment first */
533 if (rmdemux->segment_running && !flush) {
536 newseg = gst_event_new_new_segment (TRUE, rmdemux->segment.rate,
537 GST_FORMAT_TIME, rmdemux->segment.start,
538 rmdemux->segment.last_stop, rmdemux->segment.time);
540 gst_rmdemux_send_event (rmdemux, newseg);
544 gst_segment_set_seek (&rmdemux->segment, rate, format, flags,
545 cur_type, cur, stop_type, stop, &update);
548 GST_DEBUG_OBJECT (rmdemux, "segment positions set to %" GST_TIME_FORMAT "-%"
549 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start),
550 GST_TIME_ARGS (rmdemux->segment.stop));
552 /* we need to stop flushing on the sinkpad as we're going to use it
553 * next. We can do this as we have the STREAM lock now. */
554 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop ());
556 GST_LOG_OBJECT (rmdemux, "Pushed FLUSH_STOP event");
558 /* For each stream, find the first index offset equal to or before our seek
559 * target. Of these, find the smallest offset. That's where we seek to.
561 * Then we pull 4 bytes from that offset, and validate that we've seeked to a
562 * what looks like a plausible packet.
563 * If that fails, restart, with the seek target set to one less than the
564 * offset we just tried. If we run out of places to try, treat that as a fatal
567 if (!find_seek_offset_time (rmdemux, rmdemux->segment.last_stop)) {
568 GST_LOG_OBJECT (rmdemux, "Failed to find seek offset by time");
573 GST_LOG_OBJECT (rmdemux, "Validating offset %u", rmdemux->offset);
574 validated = gst_rmdemux_validate_offset (rmdemux);
576 GST_INFO_OBJECT (rmdemux, "Failed to validate offset at %u",
578 if (!find_seek_offset_bytes (rmdemux, rmdemux->offset - 1)) {
582 validated = gst_rmdemux_validate_offset (rmdemux);
585 GST_LOG_OBJECT (rmdemux, "Found final offset. Excellent!");
587 /* now we have a new position, prepare for streaming again */
589 /* Reset the demuxer state */
590 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
593 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop ());
595 /* must send newsegment event from streaming thread, so just set flag */
596 rmdemux->need_newsegment = TRUE;
598 /* notify start of new segment */
599 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
600 gst_element_post_message (GST_ELEMENT_CAST (rmdemux),
601 gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
602 GST_FORMAT_TIME, rmdemux->segment.last_stop));
605 /* restart our task since it might have been stopped when we did the
607 gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
612 /* streaming can continue now */
613 GST_PAD_STREAM_UNLOCK (rmdemux->sinkpad);
619 GST_DEBUG_OBJECT (rmdemux, "seek failed");
626 gst_rmdemux_src_query (GstPad * pad, GstQuery * query)
628 gboolean res = FALSE;
631 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
633 switch (GST_QUERY_TYPE (query)) {
634 case GST_QUERY_POSITION:
635 GST_DEBUG_OBJECT (rmdemux, "Position query: no idea from demuxer!");
637 case GST_QUERY_DURATION:{
640 gst_query_parse_duration (query, &fmt, NULL);
641 if (fmt == GST_FORMAT_TIME) {
642 GST_OBJECT_LOCK (rmdemux);
643 if (G_LIKELY (rmdemux->running)) {
644 gst_query_set_duration (query, GST_FORMAT_TIME, rmdemux->duration);
645 GST_DEBUG_OBJECT (rmdemux, "duration set to %" GST_TIME_FORMAT,
646 GST_TIME_ARGS (rmdemux->duration));
649 GST_OBJECT_UNLOCK (rmdemux);
653 case GST_QUERY_SEEKING:{
656 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
657 if (fmt == GST_FORMAT_TIME) {
658 GST_OBJECT_LOCK (rmdemux);
659 if (G_LIKELY (rmdemux->running)) {
660 gst_query_set_seeking (query, GST_FORMAT_TIME, rmdemux->seekable,
661 0, rmdemux->duration);
664 GST_OBJECT_UNLOCK (rmdemux);
669 res = gst_pad_query_default (pad, query);
673 gst_object_unref (rmdemux);
677 static const GstQueryType *
678 gst_rmdemux_src_query_types (GstPad * pad)
680 static const GstQueryType query_types[] = {
691 gst_rmdemux_reset (GstRMDemux * rmdemux)
695 GST_OBJECT_LOCK (rmdemux);
696 rmdemux->running = FALSE;
697 GST_OBJECT_UNLOCK (rmdemux);
699 for (cur = rmdemux->streams; cur; cur = cur->next) {
700 GstRMDemuxStream *stream = cur->data;
702 g_object_unref (stream->adapter);
703 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
704 gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
705 if (stream->pending_tags)
706 gst_tag_list_free (stream->pending_tags);
707 if (stream->subpackets)
708 g_ptr_array_free (stream->subpackets, TRUE);
709 g_free (stream->index);
712 g_slist_free (rmdemux->streams);
713 rmdemux->streams = NULL;
714 rmdemux->n_audio_streams = 0;
715 rmdemux->n_video_streams = 0;
717 gst_adapter_clear (rmdemux->adapter);
718 rmdemux->state = RMDEMUX_STATE_HEADER;
719 rmdemux->have_pads = FALSE;
721 gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
722 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
723 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
724 rmdemux->need_newsegment = TRUE;
727 static GstStateChangeReturn
728 gst_rmdemux_change_state (GstElement * element, GstStateChange transition)
730 GstRMDemux *rmdemux = GST_RMDEMUX (element);
731 GstStateChangeReturn res;
733 switch (transition) {
734 case GST_STATE_CHANGE_NULL_TO_READY:
736 case GST_STATE_CHANGE_READY_TO_PAUSED:
737 rmdemux->state = RMDEMUX_STATE_HEADER;
738 rmdemux->have_pads = FALSE;
739 gst_segment_init (&rmdemux->segment, GST_FORMAT_TIME);
740 rmdemux->running = FALSE;
742 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
748 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
750 switch (transition) {
751 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
753 case GST_STATE_CHANGE_PAUSED_TO_READY:{
754 gst_rmdemux_reset (rmdemux);
757 case GST_STATE_CHANGE_READY_TO_NULL:
766 /* this function is called when the pad is activated and should start
769 * We check if we can do random access to decide if we work push or
773 gst_rmdemux_sink_activate (GstPad * sinkpad)
775 if (gst_pad_check_pull_range (sinkpad)) {
776 return gst_pad_activate_pull (sinkpad, TRUE);
778 return gst_pad_activate_push (sinkpad, TRUE);
782 /* this function gets called when we activate ourselves in push mode.
783 * We cannot seek (ourselves) in the stream */
785 gst_rmdemux_sink_activate_push (GstPad * pad, gboolean active)
789 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
791 GST_DEBUG_OBJECT (rmdemux, "activate_push");
793 rmdemux->seekable = FALSE;
798 /* this function gets called when we activate ourselves in pull mode.
799 * We can perform random access to the resource and we start a task
800 * to start reading */
802 gst_rmdemux_sink_activate_pull (GstPad * pad, gboolean active)
806 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
808 GST_DEBUG_OBJECT (rmdemux, "activate_pull");
811 rmdemux->seekable = TRUE;
813 rmdemux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
814 rmdemux->data_offset = G_MAXUINT;
816 return gst_pad_start_task (pad, (GstTaskFunction) gst_rmdemux_loop, pad);
818 return gst_pad_stop_task (pad);
822 /* random access mode - just pass over to our chain function */
824 gst_rmdemux_loop (GstPad * pad)
828 GstFlowReturn ret = GST_FLOW_OK;
831 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
833 GST_LOG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
834 rmdemux->loop_state, rmdemux->offset);
836 switch (rmdemux->state) {
837 case RMDEMUX_STATE_HEADER:
840 case RMDEMUX_STATE_HEADER_DATA:
843 case RMDEMUX_STATE_DATA_PACKET:
844 size = rmdemux->avg_packet_size;
846 case RMDEMUX_STATE_EOS:
847 GST_LOG_OBJECT (rmdemux, "At EOS, pausing task");
848 ret = GST_FLOW_UNEXPECTED;
851 GST_LOG_OBJECT (rmdemux, "Default: requires %d bytes (state is %d)",
852 (int) rmdemux->size, rmdemux->state);
853 size = rmdemux->size;
856 ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
857 if (ret != GST_FLOW_OK) {
858 if (rmdemux->offset == rmdemux->index_offset) {
859 /* The index isn't available so forget about it */
860 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
861 rmdemux->offset = rmdemux->data_offset;
862 GST_OBJECT_LOCK (rmdemux);
863 rmdemux->running = TRUE;
864 rmdemux->seekable = FALSE;
865 GST_OBJECT_UNLOCK (rmdemux);
868 GST_DEBUG_OBJECT (rmdemux, "Unable to pull %d bytes at offset 0x%08x "
869 "(pull_range returned flow %s, state is %d)", (gint) size,
870 rmdemux->offset, gst_flow_get_name (ret), GST_STATE (rmdemux));
875 size = GST_BUFFER_SIZE (buffer);
877 /* Defer to the chain function */
878 ret = gst_rmdemux_chain (pad, buffer);
879 if (ret != GST_FLOW_OK) {
880 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
885 rmdemux->offset += size;
887 switch (rmdemux->loop_state) {
888 case RMDEMUX_LOOP_STATE_HEADER:
889 if (rmdemux->offset >= rmdemux->data_offset) {
890 /* It's the end of the header */
891 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
892 rmdemux->offset = rmdemux->index_offset;
895 case RMDEMUX_LOOP_STATE_INDEX:
896 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
897 if (rmdemux->index_offset == 0) {
898 /* We've read the last index */
899 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
900 rmdemux->offset = rmdemux->data_offset;
901 GST_OBJECT_LOCK (rmdemux);
902 rmdemux->running = TRUE;
903 GST_OBJECT_UNLOCK (rmdemux);
905 /* Get the next index */
906 rmdemux->offset = rmdemux->index_offset;
910 case RMDEMUX_LOOP_STATE_DATA:
919 const gchar *reason = gst_flow_get_name (ret);
921 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
922 rmdemux->segment_running = FALSE;
923 gst_pad_pause_task (rmdemux->sinkpad);
925 if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
926 if (ret == GST_FLOW_UNEXPECTED) {
927 /* perform EOS logic */
928 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
931 /* for segment playback we need to post when (in stream time)
932 * we stopped, this is either stop (when set) or the duration. */
933 if ((stop = rmdemux->segment.stop) == -1)
934 stop = rmdemux->segment.duration;
936 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
937 gst_element_post_message (GST_ELEMENT (rmdemux),
938 gst_message_new_segment_done (GST_OBJECT (rmdemux),
939 GST_FORMAT_TIME, stop));
941 /* normal playback, send EOS to all linked pads */
942 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
943 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
946 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
947 (NULL), ("stream stopped, reason %s", reason));
948 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
956 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
960 for (i = 0; i < 4; i++) {
961 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
969 gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer)
971 GstFlowReturn ret = GST_FLOW_OK;
976 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
978 if (rmdemux->base_ts == -1) {
979 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
980 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
981 GST_TIME_ARGS (rmdemux->base_ts));
984 gst_adapter_push (rmdemux->adapter, buffer);
986 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %d",
987 GST_BUFFER_SIZE (buffer));
990 avail = gst_adapter_available (rmdemux->adapter);
992 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
993 switch (rmdemux->state) {
994 case RMDEMUX_STATE_HEADER:
996 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
999 data = gst_adapter_peek (rmdemux->adapter, HEADER_SIZE);
1001 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
1002 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
1003 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
1005 /* Sanity-check. We assume that the FOURCC is printable ASCII */
1006 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
1007 /* Failed. Remain in HEADER state, try again... We flush only
1008 * the actual FOURCC, not the entire header, because we could
1009 * need to resync anywhere at all... really, this should never
1011 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
1013 gst_adapter_flush (rmdemux->adapter, 4);
1018 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1020 " size=%08x object_version=%d",
1021 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1022 rmdemux->object_version);
1024 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1026 switch (rmdemux->object_id) {
1027 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1028 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1030 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1031 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1033 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1034 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1036 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1037 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1039 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1040 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1042 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1043 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1046 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1051 case RMDEMUX_STATE_HEADER_UNKNOWN:
1053 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1056 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1057 GST_FOURCC_ARGS (rmdemux->object_id));
1059 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1060 rmdemux->state = RMDEMUX_STATE_HEADER;
1063 case RMDEMUX_STATE_HEADER_RMF:
1065 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1068 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1069 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1071 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1074 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1075 rmdemux->state = RMDEMUX_STATE_HEADER;
1078 case RMDEMUX_STATE_HEADER_PROP:
1080 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1082 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1084 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1086 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1087 rmdemux->state = RMDEMUX_STATE_HEADER;
1090 case RMDEMUX_STATE_HEADER_MDPR:
1092 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1094 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1096 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1098 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1099 rmdemux->state = RMDEMUX_STATE_HEADER;
1102 case RMDEMUX_STATE_HEADER_CONT:
1104 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1106 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1108 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1110 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1111 rmdemux->state = RMDEMUX_STATE_HEADER;
1114 case RMDEMUX_STATE_HEADER_DATA:
1116 /* If we haven't already done so then signal there are no more pads */
1117 if (!rmdemux->have_pads) {
1118 GST_LOG_OBJECT (rmdemux, "no more pads");
1119 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1120 rmdemux->have_pads = TRUE;
1123 /* The actual header is only 8 bytes */
1124 rmdemux->size = DATA_SIZE;
1125 GST_LOG_OBJECT (rmdemux, "data available %d",
1126 gst_adapter_available (rmdemux->adapter));
1127 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1130 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1132 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1134 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1136 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1139 case RMDEMUX_STATE_HEADER_INDX:
1141 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1143 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1145 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1147 /* Only flush the header */
1148 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1150 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1153 case RMDEMUX_STATE_INDX_DATA:
1155 /* There's not always an data to get... */
1156 if (rmdemux->size > 0) {
1157 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1160 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1162 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1164 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1167 rmdemux->state = RMDEMUX_STATE_HEADER;
1170 case RMDEMUX_STATE_DATA_PACKET:
1172 if (gst_adapter_available (rmdemux->adapter) < 2)
1175 data = gst_adapter_peek (rmdemux->adapter, 2);
1176 version = RMDEMUX_GUINT16_GET (data);
1177 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1179 if (version == 0 || version == 1) {
1182 if (gst_adapter_available (rmdemux->adapter) < 4)
1184 data = gst_adapter_peek (rmdemux->adapter, 4);
1186 length = RMDEMUX_GUINT16_GET (data + 2);
1187 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1190 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1191 /* Invalid, just drop it */
1192 gst_adapter_flush (rmdemux->adapter, 4);
1196 avail = gst_adapter_available (rmdemux->adapter);
1200 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1203 /* flush version and length */
1204 gst_adapter_flush (rmdemux->adapter, 4);
1207 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1209 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1210 rmdemux->chunk_index++;
1213 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1214 rmdemux->state = RMDEMUX_STATE_HEADER;
1217 gst_adapter_flush (rmdemux->adapter, 2);
1219 if (rmdemux->data_offset == 0) {
1220 GST_LOG_OBJECT (rmdemux,
1221 "No further data, internal demux state EOS");
1222 rmdemux->state = RMDEMUX_STATE_EOS;
1224 rmdemux->state = RMDEMUX_STATE_HEADER;
1228 case RMDEMUX_STATE_EOS:
1229 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1232 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1241 static GstRMDemuxStream *
1242 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1246 for (cur = rmdemux->streams; cur; cur = cur->next) {
1247 GstRMDemuxStream *stream = cur->data;
1249 if (stream->id == id) {
1258 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1262 for (cur = rmdemux->streams; cur; cur = cur->next) {
1263 GstRMDemuxStream *stream = cur->data;
1265 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1266 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1268 switch (GST_EVENT_TYPE (event)) {
1269 case GST_EVENT_FLUSH_STOP:
1270 stream->last_ts = -1;
1271 stream->next_ts = -1;
1272 stream->last_seq = -1;
1273 stream->next_seq = -1;
1274 stream->last_flow = GST_FLOW_OK;
1279 gst_event_ref (event);
1280 gst_pad_push_event (stream->pad, event);
1282 gst_event_unref (event);
1286 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1288 GstCaps *stream_caps = NULL;
1289 const gchar *codec_tag = NULL;
1290 const gchar *codec_name = NULL;
1293 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1294 char *name = g_strdup_printf ("video_%02d", rmdemux->n_video_streams);
1297 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1300 codec_tag = GST_TAG_VIDEO_CODEC;
1302 switch (stream->fourcc) {
1303 case GST_RM_VDO_RV10:
1304 codec_name = "Real Video 1.0";
1307 case GST_RM_VDO_RV20:
1308 codec_name = "Real Video 2.0";
1311 case GST_RM_VDO_RV30:
1312 codec_name = "Real Video 3.0";
1315 case GST_RM_VDO_RV40:
1316 codec_name = "Real Video 4.0";
1320 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1321 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1322 GST_WARNING_OBJECT (rmdemux,
1323 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1324 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1329 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1331 "format", G_TYPE_INT,
1332 (int) stream->format,
1333 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1337 gst_caps_set_simple (stream_caps,
1338 "width", G_TYPE_INT, stream->width,
1339 "height", G_TYPE_INT, stream->height,
1340 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1341 stream->framerate_denominator, NULL);
1343 rmdemux->n_video_streams++;
1345 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1346 char *name = g_strdup_printf ("audio_%02d", rmdemux->n_audio_streams);
1349 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1350 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1353 codec_tag = GST_TAG_AUDIO_CODEC;
1355 switch (stream->fourcc) {
1356 /* Older RealAudio Codecs */
1357 case GST_RM_AUD_14_4:
1358 codec_name = "Real Audio 14.4kbps";
1362 case GST_RM_AUD_28_8:
1363 codec_name = "Real Audio 28.8kbps";
1367 /* DolbyNet (Dolby AC3, low bitrate) */
1368 case GST_RM_AUD_DNET:
1369 codec_name = "AC-3 audio";
1371 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1372 (int) stream->rate, NULL);
1373 stream->needs_descrambling = TRUE;
1374 stream->subpackets_needed = 1;
1375 stream->subpackets = NULL;
1379 case GST_RM_AUD_RAAC:
1380 case GST_RM_AUD_RACP:
1381 codec_name = "MPEG4 audio";
1383 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1384 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1385 if (stream->extra_data_size > 0) {
1386 /* strip off an unknown byte in the extra data */
1387 stream->extra_data_size--;
1388 stream->extra_data++;
1390 stream->needs_descrambling = TRUE;
1391 stream->subpackets_needed = 1;
1392 stream->subpackets = NULL;
1396 case GST_RM_AUD_ATRC:
1397 codec_name = "Sony ATRAC3";
1398 stream_caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
1401 /* RealAudio G2 audio */
1402 case GST_RM_AUD_COOK:
1403 codec_name = "Real Audio G2 (Cook)";
1405 stream->needs_descrambling = TRUE;
1406 stream->subpackets_needed = stream->height;
1407 stream->subpackets = NULL;
1410 /* RALF is lossless */
1411 case GST_RM_AUD_RALF:
1412 /* FIXME: codec_name = */
1413 GST_DEBUG_OBJECT (rmdemux, "RALF");
1414 stream_caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
1417 /* Sipro/ACELP.NET Voice Codec (MIME unknown) */
1418 case GST_RM_AUD_SIPR:
1419 /* FIXME: codec_name = */
1420 stream_caps = gst_caps_new_simple ("audio/x-sipro", NULL);
1424 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1425 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1426 GST_WARNING_OBJECT (rmdemux,
1427 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1428 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1434 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1435 (int) version, NULL);
1439 gst_caps_set_simple (stream_caps,
1440 "flavor", G_TYPE_INT, (int) stream->flavor,
1441 "rate", G_TYPE_INT, (int) stream->rate,
1442 "channels", G_TYPE_INT, (int) stream->n_channels,
1443 "width", G_TYPE_INT, (int) stream->sample_width,
1444 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1445 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1446 "height", G_TYPE_INT, (int) stream->height, NULL);
1448 rmdemux->n_audio_streams++;
1450 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1456 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1457 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1458 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1459 g_slist_length (rmdemux->streams));
1461 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1464 if (stream->pad && stream_caps) {
1466 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1467 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1469 /* add codec_data if there is any */
1470 if (stream->extra_data_size > 0) {
1473 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1474 memcpy (GST_BUFFER_DATA (buffer), stream->extra_data,
1475 stream->extra_data_size);
1477 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1480 gst_buffer_unref (buffer);
1483 gst_pad_use_fixed_caps (stream->pad);
1485 gst_pad_set_caps (stream->pad, stream_caps);
1486 gst_pad_set_event_function (stream->pad,
1487 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1488 gst_pad_set_query_type_function (stream->pad,
1489 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query_types));
1490 gst_pad_set_query_function (stream->pad,
1491 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1493 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1494 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1495 gst_pad_set_active (stream->pad, TRUE);
1496 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1498 /* save for later, we must send the tags after the newsegment event */
1499 if (codec_name != NULL && codec_tag != NULL) {
1500 stream->pending_tags = gst_tag_list_new ();
1501 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1502 codec_tag, codec_name, NULL);
1509 gst_caps_unref (stream_caps);
1513 re_skip_pascal_string (const guint8 * ptr)
1523 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1525 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1526 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1530 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1532 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1533 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1534 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1535 RMDEMUX_GUINT32_GET (data + 8));
1536 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1537 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1538 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1539 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1541 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1542 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1544 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1545 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1546 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1547 rmdemux->index_offset);
1548 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1549 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1550 rmdemux->data_offset);
1551 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1552 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1556 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1558 GstRMDemuxStream *stream;
1559 char *stream1_type_string;
1560 char *stream2_type_string;
1565 stream = g_new0 (GstRMDemuxStream, 1);
1567 stream->id = RMDEMUX_GUINT16_GET (data);
1568 stream->index = NULL;
1569 stream->seek_offset = 0;
1570 stream->last_ts = -1;
1571 stream->next_ts = -1;
1572 stream->last_flow = GST_FLOW_OK;
1573 stream->discont = TRUE;
1574 stream->adapter = gst_adapter_new ();
1575 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1578 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1579 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1580 length - offset, &str_len);
1582 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1583 length - offset, &str_len);
1586 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1588 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1589 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1591 * so, we should not rely on it to know which stream type it is
1594 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1595 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1597 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1598 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1599 } else if (strcmp (stream2_type_string,
1600 "video/x-pn-multirate-realvideo") == 0) {
1601 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1602 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1603 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1604 } else if (strcmp (stream2_type_string,
1605 "audio/x-pn-multirate-realaudio") == 0) {
1606 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1607 } else if (strcmp (stream2_type_string,
1608 "audio/x-pn-multirate-realaudio-live") == 0) {
1609 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1610 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1611 /* Another audio type found in the real testsuite */
1612 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1613 } else if (strcmp (stream1_type_string, "") == 0 &&
1614 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1615 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1617 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1618 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1619 stream1_type_string, stream2_type_string);
1621 g_free (stream1_type_string);
1622 g_free (stream2_type_string);
1626 stream->subtype = stream_type;
1627 switch (stream_type) {
1629 case GST_RMDEMUX_STREAM_VIDEO:
1630 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1631 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1632 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1633 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1634 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1635 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1636 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1637 stream->extra_data_size = length - (offset + 26);
1638 stream->extra_data = (guint8 *) data + offset + 26;
1639 /* Natural way to represent framerates here requires unsigned 32 bit
1640 * numerator, which we don't have. For the nasty case, approximate...
1643 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1644 RMDEMUX_GUINT16_GET (data + offset + 24);
1645 if (numerator > G_MAXINT) {
1646 stream->framerate_numerator = (gint) (numerator >> 1);
1647 stream->framerate_denominator = 32768;
1649 stream->framerate_numerator = (gint) numerator;
1650 stream->framerate_denominator = 65536;
1654 GST_DEBUG_OBJECT (rmdemux,
1655 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1656 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1657 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1658 stream->rate, stream->framerate_numerator,
1659 stream->framerate_denominator, stream->subformat, stream->format,
1660 stream->extra_data_size);
1662 case GST_RMDEMUX_STREAM_AUDIO:{
1663 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1664 GST_INFO ("stream version = %u", stream->version);
1665 switch (stream->version) {
1667 stream->fourcc = GST_RM_AUD_14_4;
1668 stream->packet_size = 20;
1669 stream->rate = 8000;
1670 stream->n_channels = 1;
1671 stream->sample_width = 16;
1673 stream->leaf_size = 0;
1677 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1678 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1679 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1680 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1681 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1682 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1683 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1684 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1685 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1686 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1687 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1688 stream->extra_data_size);
1689 if (length - (offset + 73) >= stream->extra_data_size) {
1690 stream->extra_data = (guint8 *) data + offset + 73;
1692 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1693 stream->extra_data_size = 0;
1697 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1698 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1699 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1700 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1701 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1702 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1703 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1704 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1705 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1706 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1707 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1708 stream->extra_data_size);
1709 if (length - (offset + 78) >= stream->extra_data_size) {
1710 stream->extra_data = (guint8 *) data + offset + 78;
1712 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1713 stream->extra_data_size = 0;
1717 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1723 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1724 GST_DEBUG_OBJECT (rmdemux,
1725 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1726 stream->rate, stream->sample_width, stream->n_channels);
1730 case GST_RMDEMUX_STREAM_FILEINFO:
1734 /* Length of this section */
1735 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1736 RMDEMUX_GUINT32_GET (data + offset));
1739 /* Unknown : 00 00 00 00 */
1742 /* Number of variables that would follow (loop iterations) */
1743 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1746 while (element_nb) {
1747 /* Category Id : 00 00 00 XX 00 00 */
1751 offset += re_skip_pascal_string (data + offset);
1753 /* Variable Value Type */
1754 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1755 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1758 /* Variable Value */
1759 offset += re_skip_pascal_string (data + offset);
1765 case GST_RMDEMUX_STREAM_UNKNOWN:
1770 gst_rmdemux_add_stream (rmdemux, stream);
1774 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1779 n = RMDEMUX_GUINT32_GET (data);
1780 id = RMDEMUX_GUINT16_GET (data + 4);
1781 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1783 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1786 /* Point to the next index_stream */
1787 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1789 /* Return the length of the index */
1794 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1799 GstRMDemuxIndex *index;
1801 /* The number of index records */
1804 if (rmdemux->index_stream == NULL)
1807 /* don't parse the index a second time when operating pull-based and
1808 * reaching the end of the file */
1809 if (rmdemux->index_stream->index_length > 0) {
1810 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1814 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1815 rmdemux->index_stream->index = index;
1816 rmdemux->index_stream->index_length = n;
1818 for (i = 0; i < n; i++) {
1819 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1820 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1822 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1823 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1830 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1832 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1833 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1834 rmdemux->chunk_index = 0;
1835 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1836 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1840 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1844 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1846 gst_element_found_tags (GST_ELEMENT (rmdemux), tags);
1850 static GstFlowReturn
1851 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1856 /* store the value */
1857 stream->last_flow = ret;
1859 /* if it's success we can return the value right away */
1860 if (GST_FLOW_IS_SUCCESS (ret))
1863 /* any other error that is not-linked can be returned right
1865 if (ret != GST_FLOW_NOT_LINKED)
1868 for (cur = rmdemux->streams; cur; cur = cur->next) {
1869 GstRMDemuxStream *ostream = cur->data;
1871 ret = ostream->last_flow;
1872 /* some other return value (must be SUCCESS but we can return
1873 * other values as well) */
1874 if (ret != GST_FLOW_NOT_LINKED)
1877 /* if we get here, all other pads were unlinked and we return
1878 * NOT_LINKED then */
1884 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1885 GstRMDemuxStream * stream)
1887 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1890 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1891 stream->subpackets->len);
1892 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1893 g_ptr_array_set_size (stream->subpackets, 0);
1896 static GstFlowReturn
1897 gst_rmdemux_descramble_cook_audio (GstRMDemux * rmdemux,
1898 GstRMDemuxStream * stream)
1902 guint packet_size = stream->packet_size;
1903 guint height = stream->subpackets->len;
1904 guint leaf_size = stream->leaf_size;
1907 g_assert (stream->height == height);
1909 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1912 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
1913 GST_BUFFER_OFFSET_NONE, height * packet_size,
1914 GST_PAD_CAPS (stream->pad), &outbuf);
1916 if (ret != GST_FLOW_OK)
1919 for (p = 0; p < height; ++p) {
1920 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1921 guint8 *b_data = GST_BUFFER_DATA (b);
1924 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1926 for (x = 0; x < packet_size / leaf_size; ++x) {
1929 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1930 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1931 memcpy (GST_BUFFER_DATA (outbuf) + leaf_size * idx, b_data, leaf_size);
1932 b_data += leaf_size;
1936 /* some decoders, such as realaudiodec, need to be fed in packet units */
1937 for (p = 0; p < height; ++p) {
1940 subbuf = gst_buffer_create_sub (outbuf, p * packet_size, packet_size);
1942 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1943 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1945 if (stream->discont) {
1946 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1947 stream->discont = FALSE;
1950 gst_buffer_set_caps (subbuf, GST_PAD_CAPS (stream->pad));
1951 ret = gst_pad_push (stream->pad, subbuf);
1952 if (ret != GST_FLOW_OK)
1956 gst_buffer_unref (outbuf);
1960 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1965 static GstFlowReturn
1966 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1967 GstRMDemuxStream * stream)
1971 buf = g_ptr_array_index (stream->subpackets, 0);
1972 g_ptr_array_index (stream->subpackets, 0) = NULL;
1973 g_ptr_array_set_size (stream->subpackets, 0);
1975 buf = gst_rm_utils_descramble_dnet_buffer (buf);
1977 if (stream->discont) {
1978 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
1979 stream->discont = FALSE;
1981 return gst_pad_push (stream->pad, buf);
1984 static GstFlowReturn
1985 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
1986 GstRMDemuxStream * stream)
1989 GstBuffer *buf, *outbuf;
1990 guint frames, index, i;
1993 GstClockTime timestamp;
1997 buf = g_ptr_array_index (stream->subpackets, 0);
1998 g_ptr_array_index (stream->subpackets, 0) = NULL;
1999 g_ptr_array_set_size (stream->subpackets, 0);
2001 data = GST_BUFFER_DATA (buf);
2002 size = GST_BUFFER_SIZE (buf);
2003 timestamp = GST_BUFFER_TIMESTAMP (buf);
2005 frames = (data[1] & 0xf0) >> 4;
2006 index = 2 * frames + 2;
2008 for (i = 0; i < frames; i++) {
2009 guint len = (data[i * 2 + 2] << 8) | data[i * 2 + 3];
2011 outbuf = gst_buffer_create_sub (buf, index, len);
2013 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2014 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2018 if (stream->discont) {
2019 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2020 stream->discont = FALSE;
2022 res = gst_pad_push (stream->pad, outbuf);
2023 if (res != GST_FLOW_OK)
2026 gst_buffer_unref (buf);
2030 static GstFlowReturn
2031 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2032 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2036 if (stream->subpackets == NULL)
2037 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2039 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
2040 stream->subpackets_needed, GST_BUFFER_SIZE (buf), keyframe);
2042 if (keyframe && stream->subpackets->len > 0) {
2043 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2046 g_ptr_array_add (stream->subpackets, buf);
2048 if (stream->subpackets->len < stream->subpackets_needed)
2051 g_assert (stream->subpackets->len >= 1);
2053 switch (stream->fourcc) {
2054 case GST_RM_AUD_DNET:
2055 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2057 case GST_RM_AUD_COOK:
2058 ret = gst_rmdemux_descramble_cook_audio (rmdemux, stream);
2060 case GST_RM_AUD_RAAC:
2061 case GST_RM_AUD_RACP:
2062 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2065 g_assert_not_reached ();
2072 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2073 guint8 * data, GstClockTime timestamp)
2077 GstClockTime ts = timestamp;
2079 if (timestamp == GST_CLOCK_TIME_NONE)
2082 /* only adjust when we have a stream with B frames */
2083 if (stream->format < 0x20200002)
2086 /* Fix timestamp. */
2087 switch (stream->fourcc) {
2088 case GST_RM_VDO_RV10:
2090 case GST_RM_VDO_RV20:
2093 * Bit 1- 2: frame type
2095 * Bit 10-22: sequence number
2098 frame_type = (data[0] >> 6) & 0x03;
2099 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2102 case GST_RM_VDO_RV30:
2106 * Bit 3: skip packet if 1
2107 * Bit 4- 5: frame type
2109 * Bit 13-25: sequence number
2112 frame_type = (data[0] >> 3) & 0x03;
2113 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2116 case GST_RM_VDO_RV40:
2119 * Bit 1: skip packet if 1
2120 * Bit 2- 3: frame type
2122 * Bit 14-26: sequence number
2125 frame_type = (data[0] >> 5) & 0x03;
2126 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2130 goto unknown_version;
2133 switch (frame_type) {
2137 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2139 if (stream->next_ts == -1)
2140 stream->next_ts = timestamp;
2142 timestamp = stream->next_ts;
2143 stream->last_ts = stream->next_ts;
2144 stream->next_ts = ts;
2145 stream->last_seq = stream->next_seq;
2146 stream->next_seq = seq;
2151 GST_LOG_OBJECT (rmdemux, "P frame");
2153 timestamp = stream->last_ts = stream->next_ts;
2154 if (seq < stream->next_seq)
2155 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2157 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2158 stream->last_seq = stream->next_seq;
2159 stream->next_seq = seq;
2164 GST_LOG_OBJECT (rmdemux, "B frame");
2166 if (seq < stream->last_seq) {
2168 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2170 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2175 goto unknown_frame_type;
2179 GST_LOG_OBJECT (rmdemux,
2180 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2181 GST_TIME_ARGS (timestamp));
2188 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2189 ("Unknown version: %i.", stream->version), (NULL));
2190 return GST_FLOW_ERROR;
2195 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2196 frame_type), (NULL));
2197 return GST_FLOW_ERROR;
2201 #define PARSE_NUMBER(data, size, number, label) \
2205 number = GST_READ_UINT16_BE (data); \
2206 if (!(number & 0xc000)) { \
2209 number = GST_READ_UINT32_BE (data); \
2219 static GstFlowReturn
2220 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2221 GstBuffer * in, guint offset, guint16 version,
2222 GstClockTime timestamp, gboolean key)
2225 const guint8 *data, *base;
2228 base = GST_BUFFER_DATA (in);
2229 data = base + offset;
2230 size = GST_BUFFER_SIZE (in) - offset;
2231 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2232 * was previously for that given stream. */
2233 ret = stream->last_flow;
2239 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2240 guint fragment_size;
2241 GstBuffer *fragment;
2243 pkg_header = *data++;
2247 * bit 7: 1=last block in block chain
2248 * bit 6: 1=short header (only one block?)
2250 if ((pkg_header & 0xc0) == 0x40) {
2251 /* skip unknown byte */
2257 if ((pkg_header & 0x40) == 0) {
2258 pkg_subseq = (*data++) & 0x7f;
2265 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2268 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2272 goto not_enough_data;
2274 pkg_seqnum = *data++;
2278 GST_DEBUG_OBJECT (rmdemux,
2279 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2280 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2282 /* calc size of fragment */
2283 if ((pkg_header & 0xc0) == 0x80) {
2284 fragment_size = pkg_offset;
2286 if ((pkg_header & 0xc0) == 0)
2287 fragment_size = size;
2289 fragment_size = pkg_length;
2291 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2293 /* get the fragment */
2294 fragment = gst_buffer_create_sub (in, data - base, fragment_size);
2296 if (pkg_subseq == 1) {
2297 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2298 gst_adapter_clear (stream->adapter);
2299 stream->frag_current = 0;
2300 stream->frag_count = 0;
2301 stream->frag_length = pkg_length;
2302 } else if (pkg_subseq == 0) {
2303 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2304 stream->frag_current = 0;
2305 stream->frag_count = 0;
2306 stream->frag_length = fragment_size;
2309 /* put fragment in adapter */
2310 gst_adapter_push (stream->adapter, fragment);
2311 stream->frag_offset[stream->frag_count] = stream->frag_current;
2312 stream->frag_current += fragment_size;
2313 stream->frag_count++;
2315 if (stream->frag_count > MAX_FRAGS)
2316 goto too_many_fragments;
2318 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2319 stream->frag_current, stream->frag_length);
2321 /* flush fragment when complete */
2322 if (stream->frag_current >= stream->frag_length) {
2328 /* calculate header size, which is:
2329 * 1 byte for the number of fragments - 1
2330 * for each fragment:
2331 * 4 bytes 0x00000001 little endian
2332 * 4 bytes fragment offset
2334 * This is also the matroska header for realvideo, the decoder needs the
2335 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2336 * in front of the data.
2338 header_size = 1 + (8 * (stream->frag_count));
2340 GST_DEBUG_OBJECT (rmdemux,
2341 "fragmented completed. count %d, header_size %u", stream->frag_count,
2344 avail = gst_adapter_available (stream->adapter);
2346 out = gst_buffer_new_and_alloc (header_size + avail);
2347 outdata = GST_BUFFER_DATA (out);
2350 *outdata++ = stream->frag_count - 1;
2351 for (i = 0; i < stream->frag_count; i++) {
2352 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2354 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2358 /* copy packet data after the header now */
2359 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2360 gst_adapter_flush (stream->adapter, avail);
2362 stream->frag_current = 0;
2363 stream->frag_count = 0;
2364 stream->frag_length = 0;
2366 gst_buffer_set_caps (out, GST_PAD_CAPS (stream->pad));
2368 if (timestamp != -1) {
2369 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2370 timestamp -= rmdemux->first_ts;
2374 if (rmdemux->base_ts != -1)
2375 timestamp += rmdemux->base_ts;
2378 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2380 GST_BUFFER_TIMESTAMP (out) = timestamp;
2382 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2383 GST_TIME_ARGS (timestamp));
2385 if (stream->discont) {
2386 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2387 stream->discont = FALSE;
2390 ret = gst_pad_push (stream->pad, out);
2391 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2392 if (ret != GST_FLOW_OK)
2395 timestamp = GST_CLOCK_TIME_NONE;
2397 data += fragment_size;
2398 size -= fragment_size;
2400 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2402 gst_buffer_unref (in);
2409 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2411 gst_buffer_unref (in);
2416 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2417 ("Got more fragments (%u) than can be handled (%u)",
2418 stream->frag_count, MAX_FRAGS), (NULL));
2419 gst_buffer_unref (in);
2420 return GST_FLOW_ERROR;
2424 static GstFlowReturn
2425 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2426 GstBuffer * in, guint offset, guint16 version,
2427 GstClockTime timestamp, gboolean key)
2429 GstFlowReturn ret, cret;
2434 data = GST_BUFFER_DATA (in) + offset;
2435 size = GST_BUFFER_SIZE (in) - offset;
2437 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
2438 GST_BUFFER_OFFSET_NONE, size, GST_PAD_CAPS (stream->pad), &buffer);
2440 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2441 if (ret != GST_FLOW_OK)
2444 memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, size);
2446 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2447 timestamp -= rmdemux->first_ts;
2451 if (rmdemux->base_ts != -1)
2452 timestamp += rmdemux->base_ts;
2454 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2456 if (stream->needs_descrambling) {
2457 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2458 GST_TIME_ARGS (timestamp));
2459 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2461 GST_LOG_OBJECT (rmdemux,
2462 "Pushing buffer of size %d, timestamp %" GST_TIME_FORMAT "to pad %s",
2463 GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (timestamp),
2464 GST_PAD_NAME (stream->pad));
2466 if (stream->discont) {
2467 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2468 stream->discont = FALSE;
2470 ret = gst_pad_push (stream->pad, buffer);
2477 GST_DEBUG_OBJECT (rmdemux, "pad alloc returned %d", ret);
2482 static GstFlowReturn
2483 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2486 GstRMDemuxStream *stream;
2488 GstFlowReturn cret, ret;
2489 GstClockTime timestamp;
2491 guint8 *data, *base;
2495 base = data = GST_BUFFER_DATA (in);
2496 size = GST_BUFFER_SIZE (in);
2499 id = RMDEMUX_GUINT16_GET (data);
2501 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2502 if (!stream || !stream->pad)
2503 goto unknown_stream;
2505 /* timestamp in Msec */
2506 ts = RMDEMUX_GUINT32_GET (data + 2);
2507 timestamp = ts * GST_MSECOND;
2509 gst_segment_set_last_stop (&rmdemux->segment, GST_FORMAT_TIME, timestamp);
2511 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2512 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2513 GST_TIME_ARGS (timestamp), size, version, ts);
2515 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2516 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2517 GST_TIME_ARGS (timestamp));
2518 rmdemux->first_ts = timestamp;
2521 /* skip stream_id and timestamp */
2526 flags = GST_READ_UINT8 (data + 1);
2531 /* version 1 has an extra byte */
2536 key = (flags & 0x02) != 0;
2537 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2539 if (rmdemux->need_newsegment) {
2542 event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
2543 rmdemux->segment.format, rmdemux->segment.start,
2544 rmdemux->segment.stop, rmdemux->segment.time);
2546 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2547 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2549 gst_rmdemux_send_event (rmdemux, event);
2550 rmdemux->need_newsegment = FALSE;
2553 if (stream->pending_tags != NULL) {
2554 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2555 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (rmdemux), stream->pad,
2556 stream->pending_tags);
2557 stream->pending_tags = NULL;
2560 if ((rmdemux->offset + size) <= stream->seek_offset) {
2561 GST_DEBUG_OBJECT (rmdemux,
2562 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2563 stream->id, stream->seek_offset, rmdemux->offset, size);
2568 /* do special headers */
2569 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2571 gst_rmdemux_parse_video_packet (rmdemux, stream, in, data - base,
2572 version, timestamp, key);
2573 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2575 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, data - base,
2576 version, timestamp, key);
2580 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2588 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2595 gst_rmdemux_plugin_init (GstPlugin * plugin)
2597 return gst_element_register (plugin, "rmdemux",
2598 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX) &&
2599 gst_element_register (plugin, "rademux",
2600 GST_RANK_SECONDARY, GST_TYPE_REAL_AUDIO_DEMUX);
2605 plugin_init (GstPlugin * plugin)
2607 if (!gst_rmdemux_plugin_init (plugin))
2610 if (!gst_rdt_depay_plugin_init (plugin))
2613 if (!gst_rdt_manager_plugin_init (plugin))
2616 if (!gst_rtsp_real_plugin_init (plugin))
2622 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
2625 "RealMedia demuxer and depayloader",
2626 plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);