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.
31 /* FIXME 0.11: suppress warnings for deprecated API such as GStaticRecMutex
32 * with newer GLib versions (>= 2.31.0) */
33 #define GLIB_DISABLE_DEPRECATION_WARNINGS
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 static const guint8 sipr_subpk_size[4] = { 29, 19, 37, 20 };
51 typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
53 struct _GstRMDemuxStream
62 GstFlowReturn last_flow;
67 GstRMDemuxIndex *index;
69 gint framerate_numerator;
70 gint framerate_denominator;
76 guint16 rate; /* samplerate */
77 guint16 n_channels; /* channels */
78 guint16 sample_width; /* bits_per_sample */
79 guint16 leaf_size; /* subpacket_size */
80 guint32 packet_size; /* coded_frame_size */
82 guint32 extra_data_size; /* codec_data_length */
83 guint8 *extra_data; /* extras */
86 gboolean needs_descrambling;
87 guint subpackets_needed; /* subpackets needed for descrambling */
88 GPtrArray *subpackets; /* array containing subpacket GstBuffers */
90 /* Variables needed for fixing timestamps. */
91 GstClockTime next_ts, last_ts;
92 guint16 next_seq, last_seq;
99 guint frag_offset[MAX_FRAGS];
102 GstTagList *pending_tags;
105 struct _GstRMDemuxIndex
108 GstClockTime timestamp;
111 static GstStaticPadTemplate gst_rmdemux_sink_template =
112 GST_STATIC_PAD_TEMPLATE ("sink",
115 GST_STATIC_CAPS ("application/vnd.rn-realmedia")
118 static GstStaticPadTemplate gst_rmdemux_videosrc_template =
119 GST_STATIC_PAD_TEMPLATE ("video_%02d",
122 GST_STATIC_CAPS_ANY);
124 static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
125 GST_STATIC_PAD_TEMPLATE ("audio_%02d",
128 GST_STATIC_CAPS_ANY);
130 GST_DEBUG_CATEGORY_STATIC (rmdemux_debug);
131 #define GST_CAT_DEFAULT rmdemux_debug
133 static GstElementClass *parent_class = NULL;
135 static void gst_rmdemux_class_init (GstRMDemuxClass * klass);
136 static void gst_rmdemux_base_init (GstRMDemuxClass * klass);
137 static void gst_rmdemux_init (GstRMDemux * rmdemux);
138 static void gst_rmdemux_finalize (GObject * object);
139 static GstStateChangeReturn gst_rmdemux_change_state (GstElement * element,
140 GstStateChange transition);
141 static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer);
142 static void gst_rmdemux_loop (GstPad * pad);
143 static gboolean gst_rmdemux_sink_activate (GstPad * sinkpad);
144 static gboolean gst_rmdemux_sink_activate_push (GstPad * sinkpad,
146 static gboolean gst_rmdemux_sink_activate_pull (GstPad * sinkpad,
148 static gboolean gst_rmdemux_sink_event (GstPad * pad, GstEvent * event);
149 static gboolean gst_rmdemux_src_event (GstPad * pad, GstEvent * event);
150 static void gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event);
151 static const GstQueryType *gst_rmdemux_src_query_types (GstPad * pad);
152 static gboolean gst_rmdemux_src_query (GstPad * pad, GstQuery * query);
153 static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux,
156 static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data,
158 static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data,
160 static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux,
161 const guint8 * data, int length);
162 static guint gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data,
164 static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data,
166 static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data,
168 static GstFlowReturn gst_rmdemux_parse_packet (GstRMDemux * rmdemux,
169 GstBuffer * in, guint16 version);
170 static void gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux,
171 const guint8 * data, int length);
172 static void gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
173 GstRMDemuxStream * stream);
174 static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
178 gst_rmdemux_get_type (void)
180 static GType rmdemux_type = 0;
183 static const GTypeInfo rmdemux_info = {
184 sizeof (GstRMDemuxClass),
185 (GBaseInitFunc) gst_rmdemux_base_init, NULL,
186 (GClassInitFunc) gst_rmdemux_class_init,
187 NULL, NULL, sizeof (GstRMDemux), 0,
188 (GInstanceInitFunc) gst_rmdemux_init,
192 g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
199 gst_rmdemux_base_init (GstRMDemuxClass * klass)
201 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
203 gst_element_class_add_static_pad_template (element_class,
204 &gst_rmdemux_sink_template);
205 gst_element_class_add_static_pad_template (element_class,
206 &gst_rmdemux_videosrc_template);
207 gst_element_class_add_static_pad_template (element_class,
208 &gst_rmdemux_audiosrc_template);
209 gst_element_class_set_details_simple (element_class, "RealMedia Demuxer",
211 "Demultiplex a RealMedia file into audio and video streams",
212 "David Schleef <ds@schleef.org>");
216 gst_rmdemux_class_init (GstRMDemuxClass * klass)
218 GObjectClass *gobject_class;
219 GstElementClass *gstelement_class;
221 gobject_class = (GObjectClass *) klass;
222 gstelement_class = (GstElementClass *) klass;
224 parent_class = g_type_class_peek_parent (klass);
226 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rmdemux_change_state);
228 GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
229 0, "Demuxer for Realmedia streams");
231 gobject_class->finalize = gst_rmdemux_finalize;
235 gst_rmdemux_finalize (GObject * object)
237 GstRMDemux *rmdemux = GST_RMDEMUX (object);
239 if (rmdemux->adapter) {
240 g_object_unref (rmdemux->adapter);
241 rmdemux->adapter = NULL;
244 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
248 gst_rmdemux_init (GstRMDemux * rmdemux)
251 gst_pad_new_from_static_template (&gst_rmdemux_sink_template, "sink");
252 gst_pad_set_event_function (rmdemux->sinkpad,
253 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_event));
254 gst_pad_set_chain_function (rmdemux->sinkpad,
255 GST_DEBUG_FUNCPTR (gst_rmdemux_chain));
256 gst_pad_set_activate_function (rmdemux->sinkpad,
257 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate));
258 gst_pad_set_activatepull_function (rmdemux->sinkpad,
259 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_pull));
260 gst_pad_set_activatepush_function (rmdemux->sinkpad,
261 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_push));
263 gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
265 rmdemux->adapter = gst_adapter_new ();
266 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
267 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
268 rmdemux->need_newsegment = TRUE;
270 gst_rm_utils_run_tests ();
274 gst_rmdemux_sink_event (GstPad * pad, GstEvent * event)
279 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
281 GST_LOG_OBJECT (pad, "%s event", GST_EVENT_TYPE_NAME (event));
283 switch (GST_EVENT_TYPE (event)) {
284 case GST_EVENT_NEWSEGMENT:
285 gst_event_unref (event);
289 ret = gst_pad_event_default (pad, event);
293 gst_object_unref (rmdemux);
298 gst_rmdemux_src_event (GstPad * pad, GstEvent * event)
302 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
304 GST_LOG_OBJECT (rmdemux, "handling src event");
306 switch (GST_EVENT_TYPE (event)) {
311 GST_LOG_OBJECT (rmdemux, "Event on src: SEEK");
312 /* can't seek if we are not seekable, FIXME could pass the
313 * seek query upstream after converting it to bytes using
314 * the average bitrate of the stream. */
315 if (!rmdemux->seekable) {
317 GST_DEBUG ("seek on non seekable stream");
321 GST_OBJECT_LOCK (rmdemux);
322 /* check if we can do the seek now */
323 running = rmdemux->running;
324 GST_OBJECT_UNLOCK (rmdemux);
326 /* now do the seek */
328 ret = gst_rmdemux_perform_seek (rmdemux, event);
332 gst_event_unref (event);
336 GST_LOG_OBJECT (rmdemux, "Event on src: type=%d", GST_EVENT_TYPE (event));
337 ret = gst_pad_event_default (pad, event);
344 GST_DEBUG ("error handling event");
345 gst_event_unref (event);
349 /* Validate that this looks like a reasonable point to seek to */
351 gst_rmdemux_validate_offset (GstRMDemux * rmdemux)
354 GstFlowReturn flowret;
355 guint16 version, length;
358 flowret = gst_pad_pull_range (rmdemux->sinkpad, rmdemux->offset, 4, &buffer);
360 if (flowret != GST_FLOW_OK) {
361 GST_DEBUG_OBJECT (rmdemux, "Failed to pull data at offset %d",
365 /* TODO: Can we also be seeking to a 'DATA' chunk header? Check this.
366 * Also, for the case we currently handle, can we check any more? It's pretty
367 * sucky to not be validating a little more heavily than this... */
368 /* This should now be the start of a data packet header. That begins with
369 * a 2-byte 'version' field, which has to be 0 or 1, then a length. I'm not
370 * certain what values are valid for length, but it must always be at least
371 * 4 bytes, and we can check that it won't take us past our known total size
374 version = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer));
375 if (version != 0 && version != 1) {
376 GST_DEBUG_OBJECT (rmdemux, "Expected version 0 or 1, got %d",
381 length = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer) + 2);
382 /* TODO: Also check against total stream length */
384 GST_DEBUG_OBJECT (rmdemux, "Expected length >= 4, got %d", (int) length);
389 rmdemux->offset += 4;
390 gst_adapter_clear (rmdemux->adapter);
391 gst_adapter_push (rmdemux->adapter, buffer);
393 GST_WARNING_OBJECT (rmdemux, "Failed to validate seek offset at %d",
401 find_seek_offset_bytes (GstRMDemux * rmdemux, guint target)
405 gboolean ret = FALSE;
407 for (cur = rmdemux->streams; cur; cur = cur->next) {
408 GstRMDemuxStream *stream = cur->data;
410 /* Search backwards through this stream's index until we find the first
411 * timestamp before our target time */
412 for (i = stream->index_length - 1; i >= 0; i--) {
413 if (stream->index[i].offset <= target) {
414 /* Set the seek_offset for the stream so we don't bother parsing it
415 * until we've passed that point */
416 stream->seek_offset = stream->index[i].offset;
417 rmdemux->offset = stream->index[i].offset;
427 find_seek_offset_time (GstRMDemux * rmdemux, GstClockTime time)
430 gboolean ret = FALSE;
432 GstClockTime earliest = GST_CLOCK_TIME_NONE;
435 for (cur = rmdemux->streams; cur; cur = cur->next, n_stream++) {
436 GstRMDemuxStream *stream = cur->data;
438 /* Search backwards through this stream's index until we find the first
439 * timestamp before our target time */
440 for (i = stream->index_length - 1; i >= 0; i--) {
441 if (stream->index[i].timestamp <= time) {
442 /* Set the seek_offset for the stream so we don't bother parsing it
443 * until we've passed that point */
444 stream->seek_offset = stream->index[i].offset;
446 /* If it's also the earliest timestamp we've seen of all streams, then
449 if (earliest == GST_CLOCK_TIME_NONE ||
450 stream->index[i].timestamp < earliest) {
451 earliest = stream->index[i].timestamp;
452 rmdemux->offset = stream->index[i].offset;
453 GST_DEBUG_OBJECT (rmdemux,
454 "We're looking for %" GST_TIME_FORMAT
455 " and we found that stream %d has the latest index at %"
456 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start), n_stream,
457 GST_TIME_ARGS (earliest));
465 stream->discont = TRUE;
471 gst_rmdemux_perform_seek (GstRMDemux * rmdemux, GstEvent * event)
479 GstSeekType cur_type, stop_type;
484 GST_DEBUG_OBJECT (rmdemux, "seek with event");
486 gst_event_parse_seek (event, &rate, &format, &flags,
487 &cur_type, &cur, &stop_type, &stop);
489 /* we can only seek on time */
490 if (format != GST_FORMAT_TIME) {
491 GST_DEBUG_OBJECT (rmdemux, "can only seek on TIME");
494 /* cannot yet do backwards playback */
496 GST_DEBUG_OBJECT (rmdemux, "can only seek with positive rate, not %lf",
501 GST_DEBUG_OBJECT (rmdemux, "seek without event");
507 GST_DEBUG_OBJECT (rmdemux, "seek, rate %g", rate);
509 flush = flags & GST_SEEK_FLAG_FLUSH;
511 /* first step is to unlock the streaming thread if it is
512 * blocked in a chain call, we do this by starting the flush. */
514 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_start ());
515 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_start ());
517 gst_pad_pause_task (rmdemux->sinkpad);
520 GST_LOG_OBJECT (rmdemux, "Done starting flushes");
522 /* now grab the stream lock so that streaming cannot continue, for
523 * non flushing seeks when the element is in PAUSED this could block
525 GST_PAD_STREAM_LOCK (rmdemux->sinkpad);
527 GST_LOG_OBJECT (rmdemux, "Took streamlock");
529 /* close current segment first */
530 if (rmdemux->segment_running && !flush) {
533 newseg = gst_event_new_new_segment (TRUE, rmdemux->segment.rate,
534 GST_FORMAT_TIME, rmdemux->segment.start,
535 rmdemux->segment.last_stop, rmdemux->segment.time);
537 gst_rmdemux_send_event (rmdemux, newseg);
541 gst_segment_set_seek (&rmdemux->segment, rate, format, flags,
542 cur_type, cur, stop_type, stop, &update);
545 GST_DEBUG_OBJECT (rmdemux, "segment positions set to %" GST_TIME_FORMAT "-%"
546 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start),
547 GST_TIME_ARGS (rmdemux->segment.stop));
549 /* we need to stop flushing on the sinkpad as we're going to use it
550 * next. We can do this as we have the STREAM lock now. */
551 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop ());
553 GST_LOG_OBJECT (rmdemux, "Pushed FLUSH_STOP event");
555 /* For each stream, find the first index offset equal to or before our seek
556 * target. Of these, find the smallest offset. That's where we seek to.
558 * Then we pull 4 bytes from that offset, and validate that we've seeked to a
559 * what looks like a plausible packet.
560 * If that fails, restart, with the seek target set to one less than the
561 * offset we just tried. If we run out of places to try, treat that as a fatal
564 if (!find_seek_offset_time (rmdemux, rmdemux->segment.last_stop)) {
565 GST_LOG_OBJECT (rmdemux, "Failed to find seek offset by time");
570 GST_LOG_OBJECT (rmdemux, "Validating offset %u", rmdemux->offset);
571 validated = gst_rmdemux_validate_offset (rmdemux);
573 GST_INFO_OBJECT (rmdemux, "Failed to validate offset at %u",
575 if (!find_seek_offset_bytes (rmdemux, rmdemux->offset - 1)) {
579 validated = gst_rmdemux_validate_offset (rmdemux);
582 GST_LOG_OBJECT (rmdemux, "Found final offset. Excellent!");
584 /* now we have a new position, prepare for streaming again */
586 /* Reset the demuxer state */
587 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
590 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop ());
592 /* must send newsegment event from streaming thread, so just set flag */
593 rmdemux->need_newsegment = TRUE;
595 /* notify start of new segment */
596 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
597 gst_element_post_message (GST_ELEMENT_CAST (rmdemux),
598 gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
599 GST_FORMAT_TIME, rmdemux->segment.last_stop));
602 /* restart our task since it might have been stopped when we did the
604 gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
609 /* streaming can continue now */
610 GST_PAD_STREAM_UNLOCK (rmdemux->sinkpad);
616 GST_DEBUG_OBJECT (rmdemux, "seek failed");
623 gst_rmdemux_src_query (GstPad * pad, GstQuery * query)
625 gboolean res = FALSE;
628 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
630 switch (GST_QUERY_TYPE (query)) {
631 case GST_QUERY_POSITION:
632 GST_DEBUG_OBJECT (rmdemux, "Position query: no idea from demuxer!");
634 case GST_QUERY_DURATION:{
637 gst_query_parse_duration (query, &fmt, NULL);
638 if (fmt == GST_FORMAT_TIME) {
639 GST_OBJECT_LOCK (rmdemux);
640 if (G_LIKELY (rmdemux->running)) {
641 gst_query_set_duration (query, GST_FORMAT_TIME, rmdemux->duration);
642 GST_DEBUG_OBJECT (rmdemux, "duration set to %" GST_TIME_FORMAT,
643 GST_TIME_ARGS (rmdemux->duration));
646 GST_OBJECT_UNLOCK (rmdemux);
650 case GST_QUERY_SEEKING:{
653 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
654 if (fmt == GST_FORMAT_TIME) {
655 GST_OBJECT_LOCK (rmdemux);
656 if (G_LIKELY (rmdemux->running)) {
657 gst_query_set_seeking (query, GST_FORMAT_TIME, rmdemux->seekable,
658 0, rmdemux->duration);
661 GST_OBJECT_UNLOCK (rmdemux);
666 res = gst_pad_query_default (pad, query);
670 gst_object_unref (rmdemux);
674 static const GstQueryType *
675 gst_rmdemux_src_query_types (GstPad * pad)
677 static const GstQueryType query_types[] = {
688 gst_rmdemux_reset (GstRMDemux * rmdemux)
692 GST_OBJECT_LOCK (rmdemux);
693 rmdemux->running = FALSE;
694 GST_OBJECT_UNLOCK (rmdemux);
696 for (cur = rmdemux->streams; cur; cur = cur->next) {
697 GstRMDemuxStream *stream = cur->data;
699 g_object_unref (stream->adapter);
700 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
701 gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
702 if (stream->pending_tags)
703 gst_tag_list_free (stream->pending_tags);
704 if (stream->subpackets)
705 g_ptr_array_free (stream->subpackets, TRUE);
706 g_free (stream->index);
709 g_slist_free (rmdemux->streams);
710 rmdemux->streams = NULL;
711 rmdemux->n_audio_streams = 0;
712 rmdemux->n_video_streams = 0;
714 if (rmdemux->pending_tags != NULL) {
715 gst_tag_list_free (rmdemux->pending_tags);
716 rmdemux->pending_tags = NULL;
719 gst_adapter_clear (rmdemux->adapter);
720 rmdemux->state = RMDEMUX_STATE_HEADER;
721 rmdemux->have_pads = FALSE;
723 gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
724 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
725 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
726 rmdemux->need_newsegment = TRUE;
729 static GstStateChangeReturn
730 gst_rmdemux_change_state (GstElement * element, GstStateChange transition)
732 GstRMDemux *rmdemux = GST_RMDEMUX (element);
733 GstStateChangeReturn res;
735 switch (transition) {
736 case GST_STATE_CHANGE_NULL_TO_READY:
738 case GST_STATE_CHANGE_READY_TO_PAUSED:
739 rmdemux->state = RMDEMUX_STATE_HEADER;
740 rmdemux->have_pads = FALSE;
741 gst_segment_init (&rmdemux->segment, GST_FORMAT_TIME);
742 rmdemux->running = FALSE;
744 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
750 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
752 switch (transition) {
753 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
755 case GST_STATE_CHANGE_PAUSED_TO_READY:{
756 gst_rmdemux_reset (rmdemux);
759 case GST_STATE_CHANGE_READY_TO_NULL:
768 /* this function is called when the pad is activated and should start
771 * We check if we can do random access to decide if we work push or
775 gst_rmdemux_sink_activate (GstPad * sinkpad)
777 if (gst_pad_check_pull_range (sinkpad)) {
778 return gst_pad_activate_pull (sinkpad, TRUE);
780 return gst_pad_activate_push (sinkpad, TRUE);
784 /* this function gets called when we activate ourselves in push mode.
785 * We cannot seek (ourselves) in the stream */
787 gst_rmdemux_sink_activate_push (GstPad * pad, gboolean active)
791 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
793 GST_DEBUG_OBJECT (rmdemux, "activate_push");
795 rmdemux->seekable = FALSE;
800 /* this function gets called when we activate ourselves in pull mode.
801 * We can perform random access to the resource and we start a task
802 * to start reading */
804 gst_rmdemux_sink_activate_pull (GstPad * pad, gboolean active)
808 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
810 GST_DEBUG_OBJECT (rmdemux, "activate_pull");
813 rmdemux->seekable = TRUE;
815 rmdemux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
816 rmdemux->data_offset = G_MAXUINT;
818 return gst_pad_start_task (pad, (GstTaskFunction) gst_rmdemux_loop, pad);
820 return gst_pad_stop_task (pad);
824 /* random access mode - just pass over to our chain function */
826 gst_rmdemux_loop (GstPad * pad)
830 GstFlowReturn ret = GST_FLOW_OK;
833 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
835 GST_LOG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
836 rmdemux->loop_state, rmdemux->offset);
838 switch (rmdemux->state) {
839 case RMDEMUX_STATE_HEADER:
842 case RMDEMUX_STATE_HEADER_DATA:
845 case RMDEMUX_STATE_DATA_PACKET:
846 size = rmdemux->avg_packet_size;
848 case RMDEMUX_STATE_EOS:
849 GST_LOG_OBJECT (rmdemux, "At EOS, pausing task");
850 ret = GST_FLOW_UNEXPECTED;
853 GST_LOG_OBJECT (rmdemux, "Default: requires %d bytes (state is %d)",
854 (int) rmdemux->size, rmdemux->state);
855 size = rmdemux->size;
858 ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
859 if (ret != GST_FLOW_OK) {
860 if (rmdemux->offset == rmdemux->index_offset) {
861 /* The index isn't available so forget about it */
862 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
863 rmdemux->offset = rmdemux->data_offset;
864 GST_OBJECT_LOCK (rmdemux);
865 rmdemux->running = TRUE;
866 rmdemux->seekable = FALSE;
867 GST_OBJECT_UNLOCK (rmdemux);
870 GST_DEBUG_OBJECT (rmdemux, "Unable to pull %d bytes at offset 0x%08x "
871 "(pull_range returned flow %s, state is %d)", (gint) size,
872 rmdemux->offset, gst_flow_get_name (ret), GST_STATE (rmdemux));
877 size = GST_BUFFER_SIZE (buffer);
879 /* Defer to the chain function */
880 ret = gst_rmdemux_chain (pad, buffer);
881 if (ret != GST_FLOW_OK) {
882 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
887 rmdemux->offset += size;
889 switch (rmdemux->loop_state) {
890 case RMDEMUX_LOOP_STATE_HEADER:
891 if (rmdemux->offset >= rmdemux->data_offset) {
892 /* It's the end of the header */
893 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
894 rmdemux->offset = rmdemux->index_offset;
897 case RMDEMUX_LOOP_STATE_INDEX:
898 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
899 if (rmdemux->index_offset == 0) {
900 /* We've read the last index */
901 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
902 rmdemux->offset = rmdemux->data_offset;
903 GST_OBJECT_LOCK (rmdemux);
904 rmdemux->running = TRUE;
905 GST_OBJECT_UNLOCK (rmdemux);
907 /* Get the next index */
908 rmdemux->offset = rmdemux->index_offset;
912 case RMDEMUX_LOOP_STATE_DATA:
921 const gchar *reason = gst_flow_get_name (ret);
923 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
924 rmdemux->segment_running = FALSE;
925 gst_pad_pause_task (rmdemux->sinkpad);
927 if (ret == GST_FLOW_UNEXPECTED) {
928 /* perform EOS logic */
929 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
932 /* for segment playback we need to post when (in stream time)
933 * we stopped, this is either stop (when set) or the duration. */
934 if ((stop = rmdemux->segment.stop) == -1)
935 stop = rmdemux->segment.duration;
937 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
938 gst_element_post_message (GST_ELEMENT (rmdemux),
939 gst_message_new_segment_done (GST_OBJECT (rmdemux),
940 GST_FORMAT_TIME, stop));
942 /* normal playback, send EOS to all linked pads */
943 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
944 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
946 } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_UNEXPECTED) {
947 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
948 (NULL), ("stream stopped, reason %s", reason));
949 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 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:
1306 case GST_RM_VDO_RV20:
1309 case GST_RM_VDO_RV30:
1312 case GST_RM_VDO_RV40:
1316 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1317 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1318 GST_WARNING_OBJECT (rmdemux,
1319 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1320 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1325 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1327 "format", G_TYPE_INT,
1328 (int) stream->format,
1329 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1333 gst_caps_set_simple (stream_caps,
1334 "width", G_TYPE_INT, stream->width,
1335 "height", G_TYPE_INT, stream->height,
1336 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1337 stream->framerate_denominator, NULL);
1339 rmdemux->n_video_streams++;
1341 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1342 char *name = g_strdup_printf ("audio_%02d", rmdemux->n_audio_streams);
1345 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1346 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1349 codec_tag = GST_TAG_AUDIO_CODEC;
1351 switch (stream->fourcc) {
1352 /* Older RealAudio Codecs */
1353 case GST_RM_AUD_14_4:
1357 case GST_RM_AUD_28_8:
1361 /* DolbyNet (Dolby AC3, low bitrate) */
1362 case GST_RM_AUD_DNET:
1364 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1365 (int) stream->rate, NULL);
1366 stream->needs_descrambling = TRUE;
1367 stream->subpackets_needed = 1;
1368 stream->subpackets = NULL;
1372 case GST_RM_AUD_RAAC:
1373 case GST_RM_AUD_RACP:
1375 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1376 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1377 if (stream->extra_data_size > 0) {
1378 /* strip off an unknown byte in the extra data */
1379 stream->extra_data_size--;
1380 stream->extra_data++;
1382 stream->needs_descrambling = TRUE;
1383 stream->subpackets_needed = 1;
1384 stream->subpackets = NULL;
1388 case GST_RM_AUD_ATRC:
1389 stream_caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
1390 stream->needs_descrambling = TRUE;
1391 stream->subpackets_needed = stream->height;
1392 stream->subpackets = NULL;
1395 /* RealAudio G2 audio */
1396 case GST_RM_AUD_COOK:
1398 stream->needs_descrambling = TRUE;
1399 stream->subpackets_needed = stream->height;
1400 stream->subpackets = NULL;
1403 /* RALF is lossless */
1404 case GST_RM_AUD_RALF:
1405 GST_DEBUG_OBJECT (rmdemux, "RALF");
1406 stream_caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
1409 case GST_RM_AUD_SIPR:
1411 if (stream->flavor > 3) {
1412 GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
1418 GST_DEBUG_OBJECT (rmdemux, "SIPR");
1419 stream_caps = gst_caps_new_simple ("audio/x-sipro", NULL);
1420 stream->needs_descrambling = TRUE;
1421 stream->subpackets_needed = stream->height;
1422 stream->subpackets = NULL;
1423 stream->leaf_size = sipr_subpk_size[stream->flavor];
1428 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1429 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1430 GST_WARNING_OBJECT (rmdemux,
1431 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1432 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1438 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1439 (int) version, NULL);
1443 gst_caps_set_simple (stream_caps,
1444 "flavor", G_TYPE_INT, (int) stream->flavor,
1445 "rate", G_TYPE_INT, (int) stream->rate,
1446 "channels", G_TYPE_INT, (int) stream->n_channels,
1447 "width", G_TYPE_INT, (int) stream->sample_width,
1448 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1449 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1450 "bitrate", G_TYPE_INT, (int) stream->bitrate,
1451 "height", G_TYPE_INT, (int) stream->height, NULL);
1453 rmdemux->n_audio_streams++;
1455 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1461 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1462 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1463 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1464 g_slist_length (rmdemux->streams));
1466 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1469 if (stream->pad && stream_caps) {
1471 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1472 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1474 /* add codec_data if there is any */
1475 if (stream->extra_data_size > 0) {
1478 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1479 memcpy (GST_BUFFER_DATA (buffer), stream->extra_data,
1480 stream->extra_data_size);
1482 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1485 gst_buffer_unref (buffer);
1488 gst_pad_use_fixed_caps (stream->pad);
1490 gst_pad_set_caps (stream->pad, stream_caps);
1491 gst_pad_set_event_function (stream->pad,
1492 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1493 gst_pad_set_query_type_function (stream->pad,
1494 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query_types));
1495 gst_pad_set_query_function (stream->pad,
1496 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1498 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1499 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1500 gst_pad_set_active (stream->pad, TRUE);
1501 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1503 codec_name = gst_pb_utils_get_codec_description (stream_caps);
1505 /* save for later, we must send the tags after the newsegment event */
1506 if (codec_tag != NULL && codec_name != NULL) {
1507 if (stream->pending_tags == NULL)
1508 stream->pending_tags = gst_tag_list_new ();
1509 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1510 codec_tag, codec_name, NULL);
1511 g_free (codec_name);
1518 gst_caps_unref (stream_caps);
1522 re_skip_pascal_string (const guint8 * ptr)
1532 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1534 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1535 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1539 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1541 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1542 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1543 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1544 RMDEMUX_GUINT32_GET (data + 8));
1545 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1546 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1547 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1548 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1550 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1551 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1553 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1554 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1555 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1556 rmdemux->index_offset);
1557 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1558 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1559 rmdemux->data_offset);
1560 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1561 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1565 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1567 GstRMDemuxStream *stream;
1568 char *stream1_type_string;
1569 char *stream2_type_string;
1573 guint32 max_bitrate;
1574 guint32 avg_bitrate;
1576 stream = g_new0 (GstRMDemuxStream, 1);
1578 stream->id = RMDEMUX_GUINT16_GET (data);
1579 stream->index = NULL;
1580 stream->seek_offset = 0;
1581 stream->last_ts = -1;
1582 stream->next_ts = -1;
1583 stream->last_flow = GST_FLOW_OK;
1584 stream->discont = TRUE;
1585 stream->adapter = gst_adapter_new ();
1586 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1588 /* parse the bitrates */
1589 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1590 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1591 stream->bitrate = avg_bitrate;
1592 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1593 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1594 if (max_bitrate != 0) {
1595 if (stream->pending_tags == NULL)
1596 stream->pending_tags = gst_tag_list_new ();
1597 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1598 GST_TAG_MAXIMUM_BITRATE, max_bitrate, NULL);
1600 if (avg_bitrate != 0) {
1601 if (stream->pending_tags == NULL)
1602 stream->pending_tags = gst_tag_list_new ();
1603 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1604 GST_TAG_BITRATE, avg_bitrate, NULL);
1608 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1609 length - offset, &str_len);
1611 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1612 length - offset, &str_len);
1615 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1617 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1618 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1620 * so, we should not rely on it to know which stream type it is
1623 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1624 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1626 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1627 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1628 } else if (strcmp (stream2_type_string,
1629 "video/x-pn-multirate-realvideo") == 0) {
1630 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1631 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1632 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1633 } else if (strcmp (stream2_type_string,
1634 "audio/x-pn-multirate-realaudio") == 0) {
1635 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1636 } else if (strcmp (stream2_type_string,
1637 "audio/x-pn-multirate-realaudio-live") == 0) {
1638 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1639 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1640 /* Another audio type found in the real testsuite */
1641 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1642 } else if (strcmp (stream1_type_string, "") == 0 &&
1643 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1644 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1646 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1647 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1648 stream1_type_string, stream2_type_string);
1650 g_free (stream1_type_string);
1651 g_free (stream2_type_string);
1655 stream->subtype = stream_type;
1656 switch (stream_type) {
1658 case GST_RMDEMUX_STREAM_VIDEO:
1659 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1660 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1661 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1662 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1663 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1664 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1665 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1666 stream->extra_data_size = length - (offset + 26);
1667 stream->extra_data = (guint8 *) data + offset + 26;
1668 /* Natural way to represent framerates here requires unsigned 32 bit
1669 * numerator, which we don't have. For the nasty case, approximate...
1672 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1673 RMDEMUX_GUINT16_GET (data + offset + 24);
1674 if (numerator > G_MAXINT) {
1675 stream->framerate_numerator = (gint) (numerator >> 1);
1676 stream->framerate_denominator = 32768;
1678 stream->framerate_numerator = (gint) numerator;
1679 stream->framerate_denominator = 65536;
1683 GST_DEBUG_OBJECT (rmdemux,
1684 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1685 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1686 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1687 stream->rate, stream->framerate_numerator,
1688 stream->framerate_denominator, stream->subformat, stream->format,
1689 stream->extra_data_size);
1691 case GST_RMDEMUX_STREAM_AUDIO:{
1692 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1693 GST_INFO ("stream version = %u", stream->version);
1694 switch (stream->version) {
1696 stream->fourcc = GST_RM_AUD_14_4;
1697 stream->packet_size = 20;
1698 stream->rate = 8000;
1699 stream->n_channels = 1;
1700 stream->sample_width = 16;
1702 stream->leaf_size = 0;
1706 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1707 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1708 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1709 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1710 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1711 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1712 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1713 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1714 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1715 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1716 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1717 stream->extra_data_size);
1718 if (length - (offset + 73) >= stream->extra_data_size) {
1719 stream->extra_data = (guint8 *) data + offset + 73;
1721 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1722 stream->extra_data_size = 0;
1726 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1727 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1728 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1729 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1730 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1731 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1732 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1733 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1734 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1735 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1736 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1737 stream->extra_data_size);
1738 if (length - (offset + 78) >= stream->extra_data_size) {
1739 stream->extra_data = (guint8 *) data + offset + 78;
1741 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1742 stream->extra_data_size = 0;
1746 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1751 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1752 GST_DEBUG_OBJECT (rmdemux,
1753 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1754 stream->rate, stream->sample_width, stream->n_channels);
1758 case GST_RMDEMUX_STREAM_FILEINFO:
1762 /* Length of this section */
1763 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1764 RMDEMUX_GUINT32_GET (data + offset));
1767 /* Unknown : 00 00 00 00 */
1770 /* Number of variables that would follow (loop iterations) */
1771 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1774 while (element_nb) {
1775 /* Category Id : 00 00 00 XX 00 00 */
1779 offset += re_skip_pascal_string (data + offset);
1781 /* Variable Value Type */
1782 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1783 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1786 /* Variable Value */
1787 offset += re_skip_pascal_string (data + offset);
1793 case GST_RMDEMUX_STREAM_UNKNOWN:
1798 gst_rmdemux_add_stream (rmdemux, stream);
1802 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1807 n = RMDEMUX_GUINT32_GET (data);
1808 id = RMDEMUX_GUINT16_GET (data + 4);
1809 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1811 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1814 /* Point to the next index_stream */
1815 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1817 /* Return the length of the index */
1822 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1827 GstRMDemuxIndex *index;
1829 /* The number of index records */
1832 if (rmdemux->index_stream == NULL)
1835 /* don't parse the index a second time when operating pull-based and
1836 * reaching the end of the file */
1837 if (rmdemux->index_stream->index_length > 0) {
1838 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1842 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1843 rmdemux->index_stream->index = index;
1844 rmdemux->index_stream->index_length = n;
1846 for (i = 0; i < n; i++) {
1847 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1848 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1850 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1851 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1858 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1860 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1861 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1862 rmdemux->chunk_index = 0;
1863 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1864 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1868 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1872 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1874 GST_LOG_OBJECT (rmdemux, "tags: %" GST_PTR_FORMAT, tags);
1876 rmdemux->pending_tags =
1877 gst_tag_list_merge (rmdemux->pending_tags, tags, GST_TAG_MERGE_APPEND);
1880 static GstFlowReturn
1881 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1886 /* store the value */
1887 stream->last_flow = ret;
1889 /* if it's success we can return the value right away */
1890 if (ret == GST_FLOW_OK)
1893 /* any other error that is not-linked can be returned right
1895 if (ret != GST_FLOW_NOT_LINKED)
1898 for (cur = rmdemux->streams; cur; cur = cur->next) {
1899 GstRMDemuxStream *ostream = cur->data;
1901 ret = ostream->last_flow;
1902 /* some other return value (must be SUCCESS but we can return
1903 * other values as well) */
1904 if (ret != GST_FLOW_NOT_LINKED)
1907 /* if we get here, all other pads were unlinked and we return
1908 * NOT_LINKED then */
1914 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1915 GstRMDemuxStream * stream)
1917 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1920 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1921 stream->subpackets->len);
1922 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1923 g_ptr_array_set_size (stream->subpackets, 0);
1926 static GstFlowReturn
1927 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1929 GstFlowReturn ret = GST_FLOW_ERROR;
1931 guint packet_size = stream->packet_size;
1932 guint height = stream->subpackets->len;
1933 guint leaf_size = stream->leaf_size;
1936 g_assert (stream->height == height);
1938 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1941 outbuf = gst_buffer_new_and_alloc (height * packet_size);
1942 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
1944 for (p = 0; p < height; ++p) {
1945 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1946 guint8 *b_data = GST_BUFFER_DATA (b);
1949 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1951 for (x = 0; x < packet_size / leaf_size; ++x) {
1954 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1955 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1956 memcpy (GST_BUFFER_DATA (outbuf) + leaf_size * idx, b_data, leaf_size);
1957 b_data += leaf_size;
1961 /* some decoders, such as realaudiodec, need to be fed in packet units */
1962 for (p = 0; p < height; ++p) {
1965 subbuf = gst_buffer_create_sub (outbuf, p * packet_size, packet_size);
1967 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1968 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1970 if (stream->discont) {
1971 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1972 stream->discont = FALSE;
1975 gst_buffer_set_caps (subbuf, GST_PAD_CAPS (stream->pad));
1976 ret = gst_pad_push (stream->pad, subbuf);
1977 if (ret != GST_FLOW_OK)
1981 gst_buffer_unref (outbuf);
1983 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1988 static GstFlowReturn
1989 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1990 GstRMDemuxStream * stream)
1994 buf = g_ptr_array_index (stream->subpackets, 0);
1995 g_ptr_array_index (stream->subpackets, 0) = NULL;
1996 g_ptr_array_set_size (stream->subpackets, 0);
1998 buf = gst_rm_utils_descramble_dnet_buffer (buf);
2000 if (stream->discont) {
2001 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2002 stream->discont = FALSE;
2004 return gst_pad_push (stream->pad, buf);
2007 static GstFlowReturn
2008 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
2009 GstRMDemuxStream * stream)
2012 GstBuffer *buf, *outbuf;
2013 guint frames, index, i;
2015 GstClockTime timestamp;
2019 buf = g_ptr_array_index (stream->subpackets, 0);
2020 g_ptr_array_index (stream->subpackets, 0) = NULL;
2021 g_ptr_array_set_size (stream->subpackets, 0);
2023 data = GST_BUFFER_DATA (buf);
2024 timestamp = GST_BUFFER_TIMESTAMP (buf);
2026 frames = (data[1] & 0xf0) >> 4;
2027 index = 2 * frames + 2;
2029 for (i = 0; i < frames; i++) {
2030 guint len = (data[i * 2 + 2] << 8) | data[i * 2 + 3];
2032 outbuf = gst_buffer_create_sub (buf, index, len);
2034 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2035 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2039 if (stream->discont) {
2040 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2041 stream->discont = FALSE;
2043 res = gst_pad_push (stream->pad, outbuf);
2044 if (res != GST_FLOW_OK)
2047 gst_buffer_unref (buf);
2051 static GstFlowReturn
2052 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2053 GstRMDemuxStream * stream)
2057 guint packet_size = stream->packet_size;
2058 guint height = stream->subpackets->len;
2061 g_assert (stream->height == height);
2063 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2064 stream->leaf_size, height);
2066 outbuf = gst_buffer_new_and_alloc (height * packet_size);
2067 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2069 for (p = 0; p < height; ++p) {
2070 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2071 guint8 *b_data = GST_BUFFER_DATA (b);
2074 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
2076 memcpy (GST_BUFFER_DATA (outbuf) + packet_size * p, b_data, packet_size);
2079 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
2080 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
2082 if (stream->discont) {
2083 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2084 stream->discont = FALSE;
2087 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2089 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2090 ret = gst_pad_push (stream->pad, outbuf);
2092 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2097 static GstFlowReturn
2098 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2099 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2103 if (stream->subpackets == NULL)
2104 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2106 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
2107 stream->subpackets_needed, GST_BUFFER_SIZE (buf), keyframe);
2109 if (keyframe && stream->subpackets->len > 0) {
2110 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2113 g_ptr_array_add (stream->subpackets, buf);
2115 if (stream->subpackets->len < stream->subpackets_needed)
2118 g_assert (stream->subpackets->len >= 1);
2120 switch (stream->fourcc) {
2121 case GST_RM_AUD_DNET:
2122 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2124 case GST_RM_AUD_COOK:
2125 case GST_RM_AUD_ATRC:
2126 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2128 case GST_RM_AUD_RAAC:
2129 case GST_RM_AUD_RACP:
2130 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2132 case GST_RM_AUD_SIPR:
2133 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2136 g_assert_not_reached ();
2143 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2144 guint8 * data, GstClockTime timestamp)
2148 GstClockTime ts = timestamp;
2150 if (timestamp == GST_CLOCK_TIME_NONE)
2153 /* only adjust when we have a stream with B frames */
2154 if (stream->format < 0x20200002)
2157 /* Fix timestamp. */
2158 switch (stream->fourcc) {
2159 case GST_RM_VDO_RV10:
2161 case GST_RM_VDO_RV20:
2164 * Bit 1- 2: frame type
2166 * Bit 10-22: sequence number
2169 frame_type = (data[0] >> 6) & 0x03;
2170 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2173 case GST_RM_VDO_RV30:
2177 * Bit 3: skip packet if 1
2178 * Bit 4- 5: frame type
2180 * Bit 13-25: sequence number
2183 frame_type = (data[0] >> 3) & 0x03;
2184 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2187 case GST_RM_VDO_RV40:
2190 * Bit 1: skip packet if 1
2191 * Bit 2- 3: frame type
2193 * Bit 14-26: sequence number
2196 frame_type = (data[0] >> 5) & 0x03;
2197 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2201 goto unknown_version;
2204 switch (frame_type) {
2208 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2210 if (stream->next_ts == -1)
2211 stream->next_ts = timestamp;
2213 timestamp = stream->next_ts;
2214 stream->last_ts = stream->next_ts;
2215 stream->next_ts = ts;
2216 stream->last_seq = stream->next_seq;
2217 stream->next_seq = seq;
2222 GST_LOG_OBJECT (rmdemux, "P frame");
2224 timestamp = stream->last_ts = stream->next_ts;
2225 if (seq < stream->next_seq)
2226 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2228 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2229 stream->last_seq = stream->next_seq;
2230 stream->next_seq = seq;
2235 GST_LOG_OBJECT (rmdemux, "B frame");
2237 if (seq < stream->last_seq) {
2239 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2241 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2246 goto unknown_frame_type;
2250 GST_LOG_OBJECT (rmdemux,
2251 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2252 GST_TIME_ARGS (timestamp));
2259 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2260 ("Unknown version: %i.", stream->version), (NULL));
2261 return GST_FLOW_ERROR;
2266 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2267 frame_type), (NULL));
2268 return GST_FLOW_ERROR;
2272 #define PARSE_NUMBER(data, size, number, label) \
2276 number = GST_READ_UINT16_BE (data); \
2277 if (!(number & 0xc000)) { \
2280 number = GST_READ_UINT32_BE (data); \
2290 static GstFlowReturn
2291 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2292 GstBuffer * in, guint offset, guint16 version,
2293 GstClockTime timestamp, gboolean key)
2296 const guint8 *data, *base;
2299 base = GST_BUFFER_DATA (in);
2300 data = base + offset;
2301 size = GST_BUFFER_SIZE (in) - offset;
2302 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2303 * was previously for that given stream. */
2304 ret = stream->last_flow;
2310 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2311 guint fragment_size;
2312 GstBuffer *fragment;
2314 pkg_header = *data++;
2318 * bit 7: 1=last block in block chain
2319 * bit 6: 1=short header (only one block?)
2321 if ((pkg_header & 0xc0) == 0x40) {
2322 /* skip unknown byte */
2328 if ((pkg_header & 0x40) == 0) {
2329 pkg_subseq = (*data++) & 0x7f;
2336 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2339 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2343 goto not_enough_data;
2345 pkg_seqnum = *data++;
2349 GST_DEBUG_OBJECT (rmdemux,
2350 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2351 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2353 /* calc size of fragment */
2354 if ((pkg_header & 0xc0) == 0x80) {
2355 fragment_size = pkg_offset;
2357 if ((pkg_header & 0xc0) == 0)
2358 fragment_size = size;
2360 fragment_size = pkg_length;
2362 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2364 /* get the fragment */
2365 fragment = gst_buffer_create_sub (in, data - base, fragment_size);
2367 if (pkg_subseq == 1) {
2368 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2369 gst_adapter_clear (stream->adapter);
2370 stream->frag_current = 0;
2371 stream->frag_count = 0;
2372 stream->frag_length = pkg_length;
2373 } else if (pkg_subseq == 0) {
2374 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2375 stream->frag_current = 0;
2376 stream->frag_count = 0;
2377 stream->frag_length = fragment_size;
2380 /* put fragment in adapter */
2381 gst_adapter_push (stream->adapter, fragment);
2382 stream->frag_offset[stream->frag_count] = stream->frag_current;
2383 stream->frag_current += fragment_size;
2384 stream->frag_count++;
2386 if (stream->frag_count > MAX_FRAGS)
2387 goto too_many_fragments;
2389 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2390 stream->frag_current, stream->frag_length);
2392 /* flush fragment when complete */
2393 if (stream->frag_current >= stream->frag_length) {
2399 /* calculate header size, which is:
2400 * 1 byte for the number of fragments - 1
2401 * for each fragment:
2402 * 4 bytes 0x00000001 little endian
2403 * 4 bytes fragment offset
2405 * This is also the matroska header for realvideo, the decoder needs the
2406 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2407 * in front of the data.
2409 header_size = 1 + (8 * (stream->frag_count));
2411 GST_DEBUG_OBJECT (rmdemux,
2412 "fragmented completed. count %d, header_size %u", stream->frag_count,
2415 avail = gst_adapter_available (stream->adapter);
2417 out = gst_buffer_new_and_alloc (header_size + avail);
2418 outdata = GST_BUFFER_DATA (out);
2421 *outdata++ = stream->frag_count - 1;
2422 for (i = 0; i < stream->frag_count; i++) {
2423 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2425 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2429 /* copy packet data after the header now */
2430 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2431 gst_adapter_flush (stream->adapter, avail);
2433 stream->frag_current = 0;
2434 stream->frag_count = 0;
2435 stream->frag_length = 0;
2437 gst_buffer_set_caps (out, GST_PAD_CAPS (stream->pad));
2439 if (timestamp != -1) {
2440 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2441 timestamp -= rmdemux->first_ts;
2445 if (rmdemux->base_ts != -1)
2446 timestamp += rmdemux->base_ts;
2449 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2451 GST_BUFFER_TIMESTAMP (out) = timestamp;
2453 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2454 GST_TIME_ARGS (timestamp));
2456 if (stream->discont) {
2457 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2458 stream->discont = FALSE;
2462 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DELTA_UNIT);
2465 ret = gst_pad_push (stream->pad, out);
2466 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2467 if (ret != GST_FLOW_OK)
2470 timestamp = GST_CLOCK_TIME_NONE;
2472 data += fragment_size;
2473 size -= fragment_size;
2475 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2477 gst_buffer_unref (in);
2484 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2486 gst_buffer_unref (in);
2491 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2492 ("Got more fragments (%u) than can be handled (%u)",
2493 stream->frag_count, MAX_FRAGS), (NULL));
2494 gst_buffer_unref (in);
2495 return GST_FLOW_ERROR;
2499 static GstFlowReturn
2500 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2501 GstBuffer * in, guint offset, guint16 version,
2502 GstClockTime timestamp, gboolean key)
2509 data = GST_BUFFER_DATA (in) + offset;
2510 size = GST_BUFFER_SIZE (in) - offset;
2512 buffer = gst_buffer_new_and_alloc (size);
2513 gst_buffer_set_caps (buffer, GST_PAD_CAPS (stream->pad));
2515 memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, size);
2517 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2518 timestamp -= rmdemux->first_ts;
2522 if (rmdemux->base_ts != -1)
2523 timestamp += rmdemux->base_ts;
2525 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2527 if (stream->needs_descrambling) {
2528 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2529 GST_TIME_ARGS (timestamp));
2530 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2532 GST_LOG_OBJECT (rmdemux,
2533 "Pushing buffer of size %d, timestamp %" GST_TIME_FORMAT "to pad %s",
2534 GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (timestamp),
2535 GST_PAD_NAME (stream->pad));
2537 if (stream->discont) {
2538 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2539 stream->discont = FALSE;
2541 ret = gst_pad_push (stream->pad, buffer);
2544 gst_buffer_unref (in);
2549 static GstFlowReturn
2550 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2553 GstRMDemuxStream *stream;
2555 GstFlowReturn cret, ret;
2556 GstClockTime timestamp;
2558 guint8 *data, *base;
2562 base = data = GST_BUFFER_DATA (in);
2563 size = GST_BUFFER_SIZE (in);
2566 id = RMDEMUX_GUINT16_GET (data);
2568 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2569 if (!stream || !stream->pad)
2570 goto unknown_stream;
2572 /* timestamp in Msec */
2573 ts = RMDEMUX_GUINT32_GET (data + 2);
2574 timestamp = ts * GST_MSECOND;
2576 gst_segment_set_last_stop (&rmdemux->segment, GST_FORMAT_TIME, timestamp);
2578 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2579 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2580 GST_TIME_ARGS (timestamp), size, version, ts);
2582 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2583 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2584 GST_TIME_ARGS (timestamp));
2585 rmdemux->first_ts = timestamp;
2588 /* skip stream_id and timestamp */
2593 flags = GST_READ_UINT8 (data + 1);
2598 /* version 1 has an extra byte */
2603 key = (flags & 0x02) != 0;
2604 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2606 if (rmdemux->need_newsegment) {
2609 event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
2610 rmdemux->segment.format, rmdemux->segment.start,
2611 rmdemux->segment.stop, rmdemux->segment.time);
2613 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2614 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2616 gst_rmdemux_send_event (rmdemux, event);
2617 rmdemux->need_newsegment = FALSE;
2619 if (rmdemux->pending_tags != NULL) {
2620 gst_element_found_tags (GST_ELEMENT (rmdemux), rmdemux->pending_tags);
2621 rmdemux->pending_tags = NULL;
2625 if (stream->pending_tags != NULL) {
2626 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2627 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (rmdemux), stream->pad,
2628 stream->pending_tags);
2629 stream->pending_tags = NULL;
2632 if ((rmdemux->offset + size) <= stream->seek_offset) {
2633 GST_DEBUG_OBJECT (rmdemux,
2634 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2635 stream->id, stream->seek_offset, rmdemux->offset, size);
2640 /* do special headers */
2641 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2643 gst_rmdemux_parse_video_packet (rmdemux, stream, in, data - base,
2644 version, timestamp, key);
2645 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2647 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, data - base,
2648 version, timestamp, key);
2652 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2660 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2667 gst_rmdemux_plugin_init (GstPlugin * plugin)
2669 return gst_element_register (plugin, "rmdemux",
2670 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);