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.
37 #define RMDEMUX_GUINT32_GET(a) GST_READ_UINT32_BE(a)
38 #define RMDEMUX_GUINT16_GET(a) GST_READ_UINT16_BE(a)
39 #define RMDEMUX_FOURCC_GET(a) GST_READ_UINT32_LE(a)
40 #define HEADER_SIZE 10
45 static const guint8 sipr_subpk_size[4] = { 29, 19, 37, 20 };
47 typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
49 struct _GstRMDemuxStream
58 GstFlowReturn last_flow;
63 GstRMDemuxIndex *index;
65 gint framerate_numerator;
66 gint framerate_denominator;
72 guint16 rate; /* samplerate */
73 guint16 n_channels; /* channels */
74 guint16 sample_width; /* bits_per_sample */
75 guint16 leaf_size; /* subpacket_size */
76 guint32 packet_size; /* coded_frame_size */
78 guint32 extra_data_size; /* codec_data_length */
79 guint8 *extra_data; /* extras */
82 gboolean needs_descrambling;
83 guint subpackets_needed; /* subpackets needed for descrambling */
84 GPtrArray *subpackets; /* array containing subpacket GstBuffers */
86 /* Variables needed for fixing timestamps. */
87 GstClockTime next_ts, last_ts;
88 guint16 next_seq, last_seq;
95 guint frag_offset[MAX_FRAGS];
98 GstTagList *pending_tags;
101 struct _GstRMDemuxIndex
104 GstClockTime timestamp;
107 static GstStaticPadTemplate gst_rmdemux_sink_template =
108 GST_STATIC_PAD_TEMPLATE ("sink",
111 GST_STATIC_CAPS ("application/vnd.rn-realmedia")
114 static GstStaticPadTemplate gst_rmdemux_videosrc_template =
115 GST_STATIC_PAD_TEMPLATE ("video_%u",
118 GST_STATIC_CAPS_ANY);
120 static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
121 GST_STATIC_PAD_TEMPLATE ("audio_%u",
124 GST_STATIC_CAPS_ANY);
126 GST_DEBUG_CATEGORY_STATIC (rmdemux_debug);
127 #define GST_CAT_DEFAULT rmdemux_debug
129 static GstElementClass *parent_class = NULL;
131 static void gst_rmdemux_class_init (GstRMDemuxClass * klass);
132 static void gst_rmdemux_base_init (GstRMDemuxClass * klass);
133 static void gst_rmdemux_init (GstRMDemux * rmdemux);
134 static void gst_rmdemux_finalize (GObject * object);
135 static GstStateChangeReturn gst_rmdemux_change_state (GstElement * element,
136 GstStateChange transition);
137 static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstObject * parent,
139 static void gst_rmdemux_loop (GstPad * pad);
140 static gboolean gst_rmdemux_sink_activate (GstPad * sinkpad,
142 static gboolean gst_rmdemux_sink_activate_mode (GstPad * sinkpad,
143 GstObject * parent, GstPadMode mode, gboolean active);
144 static gboolean gst_rmdemux_sink_event (GstPad * pad, GstObject * parent,
146 static gboolean gst_rmdemux_src_event (GstPad * pad, GstObject * parent,
148 static void gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event);
149 static gboolean gst_rmdemux_src_query (GstPad * pad, GstObject * parent,
151 static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux,
154 static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data,
156 static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data,
158 static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux,
159 const guint8 * data, int length);
160 static guint gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data,
162 static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data,
164 static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data,
166 static GstFlowReturn gst_rmdemux_parse_packet (GstRMDemux * rmdemux,
167 GstBuffer * in, guint16 version);
168 static void gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux,
169 const guint8 * data, int length);
170 static void gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
171 GstRMDemuxStream * stream);
172 static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
176 gst_rmdemux_get_type (void)
178 static GType rmdemux_type = 0;
181 static const GTypeInfo rmdemux_info = {
182 sizeof (GstRMDemuxClass),
183 (GBaseInitFunc) gst_rmdemux_base_init, NULL,
184 (GClassInitFunc) gst_rmdemux_class_init,
185 NULL, NULL, sizeof (GstRMDemux), 0,
186 (GInstanceInitFunc) gst_rmdemux_init,
190 g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
197 gst_rmdemux_base_init (GstRMDemuxClass * klass)
199 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
201 gst_element_class_add_pad_template (element_class,
202 gst_static_pad_template_get (&gst_rmdemux_sink_template));
203 gst_element_class_add_pad_template (element_class,
204 gst_static_pad_template_get (&gst_rmdemux_videosrc_template));
205 gst_element_class_add_pad_template (element_class,
206 gst_static_pad_template_get (&gst_rmdemux_audiosrc_template));
207 gst_element_class_set_static_metadata (element_class, "RealMedia Demuxer",
209 "Demultiplex a RealMedia file into audio and video streams",
210 "David Schleef <ds@schleef.org>");
214 gst_rmdemux_class_init (GstRMDemuxClass * klass)
216 GObjectClass *gobject_class;
217 GstElementClass *gstelement_class;
219 gobject_class = (GObjectClass *) klass;
220 gstelement_class = (GstElementClass *) klass;
222 parent_class = g_type_class_peek_parent (klass);
224 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rmdemux_change_state);
226 GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
227 0, "Demuxer for Realmedia streams");
229 gobject_class->finalize = gst_rmdemux_finalize;
233 gst_rmdemux_finalize (GObject * object)
235 GstRMDemux *rmdemux = GST_RMDEMUX (object);
237 if (rmdemux->adapter) {
238 g_object_unref (rmdemux->adapter);
239 rmdemux->adapter = NULL;
242 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
246 gst_rmdemux_init (GstRMDemux * rmdemux)
249 gst_pad_new_from_static_template (&gst_rmdemux_sink_template, "sink");
250 gst_pad_set_event_function (rmdemux->sinkpad,
251 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_event));
252 gst_pad_set_chain_function (rmdemux->sinkpad,
253 GST_DEBUG_FUNCPTR (gst_rmdemux_chain));
254 gst_pad_set_activate_function (rmdemux->sinkpad,
255 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate));
256 gst_pad_set_activatemode_function (rmdemux->sinkpad,
257 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_mode));
259 gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
261 rmdemux->adapter = gst_adapter_new ();
262 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
263 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
264 rmdemux->need_newsegment = TRUE;
266 gst_rm_utils_run_tests ();
270 gst_rmdemux_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
274 switch (GST_EVENT_TYPE (event)) {
275 case GST_EVENT_SEGMENT:
276 gst_event_unref (event);
280 ret = gst_pad_event_default (pad, parent, event);
287 gst_rmdemux_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
291 GstRMDemux *rmdemux = GST_RMDEMUX (parent);
293 GST_LOG_OBJECT (rmdemux, "handling src event");
295 switch (GST_EVENT_TYPE (event)) {
300 GST_LOG_OBJECT (rmdemux, "Event on src: SEEK");
301 /* can't seek if we are not seekable, FIXME could pass the
302 * seek query upstream after converting it to bytes using
303 * the average bitrate of the stream. */
304 if (!rmdemux->seekable) {
306 GST_DEBUG ("seek on non seekable stream");
310 GST_OBJECT_LOCK (rmdemux);
311 /* check if we can do the seek now */
312 running = rmdemux->running;
313 GST_OBJECT_UNLOCK (rmdemux);
315 /* now do the seek */
317 ret = gst_rmdemux_perform_seek (rmdemux, event);
321 gst_event_unref (event);
325 GST_LOG_OBJECT (rmdemux, "Event on src: type=%d", GST_EVENT_TYPE (event));
326 ret = gst_pad_event_default (pad, parent, event);
333 GST_DEBUG ("error handling event");
334 gst_event_unref (event);
338 /* Validate that this looks like a reasonable point to seek to */
340 gst_rmdemux_validate_offset (GstRMDemux * rmdemux)
343 GstFlowReturn flowret;
344 guint16 version, length;
349 flowret = gst_pad_pull_range (rmdemux->sinkpad, rmdemux->offset, 4, &buffer);
351 if (flowret != GST_FLOW_OK) {
352 GST_DEBUG_OBJECT (rmdemux, "Failed to pull data at offset %d",
356 /* TODO: Can we also be seeking to a 'DATA' chunk header? Check this.
357 * Also, for the case we currently handle, can we check any more? It's pretty
358 * sucky to not be validating a little more heavily than this... */
359 /* This should now be the start of a data packet header. That begins with
360 * a 2-byte 'version' field, which has to be 0 or 1, then a length. I'm not
361 * certain what values are valid for length, but it must always be at least
362 * 4 bytes, and we can check that it won't take us past our known total size
365 gst_buffer_map (buffer, &map, GST_MAP_READ);
366 version = RMDEMUX_GUINT16_GET (map.data);
367 if (version != 0 && version != 1) {
368 GST_DEBUG_OBJECT (rmdemux, "Expected version 0 or 1, got %d",
373 length = RMDEMUX_GUINT16_GET (map.data + 2);
374 /* TODO: Also check against total stream length */
376 GST_DEBUG_OBJECT (rmdemux, "Expected length >= 4, got %d", (int) length);
379 gst_buffer_unmap (buffer, &map);
382 rmdemux->offset += 4;
383 gst_adapter_clear (rmdemux->adapter);
384 gst_adapter_push (rmdemux->adapter, buffer);
386 GST_WARNING_OBJECT (rmdemux, "Failed to validate seek offset at %d",
388 gst_buffer_unref (buffer);
395 find_seek_offset_bytes (GstRMDemux * rmdemux, guint target)
399 gboolean ret = FALSE;
401 for (cur = rmdemux->streams; cur; cur = cur->next) {
402 GstRMDemuxStream *stream = cur->data;
404 /* Search backwards through this stream's index until we find the first
405 * timestamp before our target time */
406 for (i = stream->index_length - 1; i >= 0; i--) {
407 if (stream->index[i].offset <= target) {
408 /* Set the seek_offset for the stream so we don't bother parsing it
409 * until we've passed that point */
410 stream->seek_offset = stream->index[i].offset;
411 rmdemux->offset = stream->index[i].offset;
421 find_seek_offset_time (GstRMDemux * rmdemux, GstClockTime time)
424 gboolean ret = FALSE;
426 GstClockTime earliest = GST_CLOCK_TIME_NONE;
429 for (cur = rmdemux->streams; cur; cur = cur->next, n_stream++) {
430 GstRMDemuxStream *stream = cur->data;
432 /* Search backwards through this stream's index until we find the first
433 * timestamp before our target time */
434 for (i = stream->index_length - 1; i >= 0; i--) {
435 if (stream->index[i].timestamp <= time) {
436 /* Set the seek_offset for the stream so we don't bother parsing it
437 * until we've passed that point */
438 stream->seek_offset = stream->index[i].offset;
440 /* If it's also the earliest timestamp we've seen of all streams, then
443 if (earliest == GST_CLOCK_TIME_NONE ||
444 stream->index[i].timestamp < earliest) {
445 earliest = stream->index[i].timestamp;
446 rmdemux->offset = stream->index[i].offset;
447 GST_DEBUG_OBJECT (rmdemux,
448 "We're looking for %" GST_TIME_FORMAT
449 " and we found that stream %d has the latest index at %"
450 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start), n_stream,
451 GST_TIME_ARGS (earliest));
459 stream->discont = TRUE;
465 gst_rmdemux_perform_seek (GstRMDemux * rmdemux, GstEvent * event)
473 GstSeekType cur_type, stop_type;
478 GST_DEBUG_OBJECT (rmdemux, "seek with event");
480 gst_event_parse_seek (event, &rate, &format, &flags,
481 &cur_type, &cur, &stop_type, &stop);
483 /* we can only seek on time */
484 if (format != GST_FORMAT_TIME) {
485 GST_DEBUG_OBJECT (rmdemux, "can only seek on TIME");
488 /* cannot yet do backwards playback */
490 GST_DEBUG_OBJECT (rmdemux, "can only seek with positive rate, not %lf",
495 GST_DEBUG_OBJECT (rmdemux, "seek without event");
501 GST_DEBUG_OBJECT (rmdemux, "seek, rate %g", rate);
503 flush = flags & GST_SEEK_FLAG_FLUSH;
505 /* first step is to unlock the streaming thread if it is
506 * blocked in a chain call, we do this by starting the flush. */
508 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_start ());
509 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_start ());
511 gst_pad_pause_task (rmdemux->sinkpad);
514 GST_LOG_OBJECT (rmdemux, "Done starting flushes");
516 /* now grab the stream lock so that streaming cannot continue, for
517 * non flushing seeks when the element is in PAUSED this could block
519 GST_PAD_STREAM_LOCK (rmdemux->sinkpad);
521 GST_LOG_OBJECT (rmdemux, "Took streamlock");
524 gst_segment_do_seek (&rmdemux->segment, rate, format, flags,
525 cur_type, cur, stop_type, stop, &update);
528 GST_DEBUG_OBJECT (rmdemux, "segment positions set to %" GST_TIME_FORMAT "-%"
529 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start),
530 GST_TIME_ARGS (rmdemux->segment.stop));
532 /* we need to stop flushing on the sinkpad as we're going to use it
533 * next. We can do this as we have the STREAM lock now. */
534 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop (TRUE));
536 GST_LOG_OBJECT (rmdemux, "Pushed FLUSH_STOP event");
538 /* For each stream, find the first index offset equal to or before our seek
539 * target. Of these, find the smallest offset. That's where we seek to.
541 * Then we pull 4 bytes from that offset, and validate that we've seeked to a
542 * what looks like a plausible packet.
543 * If that fails, restart, with the seek target set to one less than the
544 * offset we just tried. If we run out of places to try, treat that as a fatal
547 if (!find_seek_offset_time (rmdemux, rmdemux->segment.position)) {
548 GST_LOG_OBJECT (rmdemux, "Failed to find seek offset by time");
553 GST_LOG_OBJECT (rmdemux, "Validating offset %u", rmdemux->offset);
554 validated = gst_rmdemux_validate_offset (rmdemux);
556 GST_INFO_OBJECT (rmdemux, "Failed to validate offset at %u",
558 if (!find_seek_offset_bytes (rmdemux, rmdemux->offset - 1)) {
562 validated = gst_rmdemux_validate_offset (rmdemux);
565 GST_LOG_OBJECT (rmdemux, "Found final offset. Excellent!");
567 /* now we have a new position, prepare for streaming again */
569 /* Reset the demuxer state */
570 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
573 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop (TRUE));
575 /* must send newsegment event from streaming thread, so just set flag */
576 rmdemux->need_newsegment = TRUE;
578 /* notify start of new segment */
579 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
580 gst_element_post_message (GST_ELEMENT_CAST (rmdemux),
581 gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
582 GST_FORMAT_TIME, rmdemux->segment.position));
585 /* restart our task since it might have been stopped when we did the
587 gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
588 rmdemux->sinkpad, NULL);
592 /* streaming can continue now */
593 GST_PAD_STREAM_UNLOCK (rmdemux->sinkpad);
599 GST_DEBUG_OBJECT (rmdemux, "seek failed");
606 gst_rmdemux_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
608 gboolean res = FALSE;
611 rmdemux = GST_RMDEMUX (parent);
613 switch (GST_QUERY_TYPE (query)) {
614 case GST_QUERY_POSITION:
615 GST_DEBUG_OBJECT (rmdemux, "Position query: no idea from demuxer!");
617 case GST_QUERY_DURATION:{
620 gst_query_parse_duration (query, &fmt, NULL);
621 if (fmt == GST_FORMAT_TIME) {
622 GST_OBJECT_LOCK (rmdemux);
623 if (G_LIKELY (rmdemux->running)) {
624 gst_query_set_duration (query, GST_FORMAT_TIME, rmdemux->duration);
625 GST_DEBUG_OBJECT (rmdemux, "duration set to %" GST_TIME_FORMAT,
626 GST_TIME_ARGS (rmdemux->duration));
629 GST_OBJECT_UNLOCK (rmdemux);
633 case GST_QUERY_SEEKING:{
636 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
637 if (fmt == GST_FORMAT_TIME) {
638 GST_OBJECT_LOCK (rmdemux);
639 if (G_LIKELY (rmdemux->running)) {
640 gst_query_set_seeking (query, GST_FORMAT_TIME, rmdemux->seekable,
641 0, rmdemux->duration);
644 GST_OBJECT_UNLOCK (rmdemux);
649 res = gst_pad_query_default (pad, parent, query);
657 gst_rmdemux_reset (GstRMDemux * rmdemux)
661 GST_OBJECT_LOCK (rmdemux);
662 rmdemux->running = FALSE;
663 GST_OBJECT_UNLOCK (rmdemux);
665 for (cur = rmdemux->streams; cur; cur = cur->next) {
666 GstRMDemuxStream *stream = cur->data;
668 g_object_unref (stream->adapter);
669 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
670 gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
671 if (stream->pending_tags)
672 gst_tag_list_free (stream->pending_tags);
673 if (stream->subpackets)
674 g_ptr_array_free (stream->subpackets, TRUE);
675 g_free (stream->index);
678 g_slist_free (rmdemux->streams);
679 rmdemux->streams = NULL;
680 rmdemux->n_audio_streams = 0;
681 rmdemux->n_video_streams = 0;
683 if (rmdemux->pending_tags != NULL) {
684 gst_tag_list_free (rmdemux->pending_tags);
685 rmdemux->pending_tags = NULL;
688 gst_adapter_clear (rmdemux->adapter);
689 rmdemux->state = RMDEMUX_STATE_HEADER;
690 rmdemux->have_pads = FALSE;
692 gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
693 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
694 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
695 rmdemux->need_newsegment = TRUE;
698 static GstStateChangeReturn
699 gst_rmdemux_change_state (GstElement * element, GstStateChange transition)
701 GstRMDemux *rmdemux = GST_RMDEMUX (element);
702 GstStateChangeReturn res;
704 switch (transition) {
705 case GST_STATE_CHANGE_NULL_TO_READY:
707 case GST_STATE_CHANGE_READY_TO_PAUSED:
708 rmdemux->state = RMDEMUX_STATE_HEADER;
709 rmdemux->have_pads = FALSE;
710 gst_segment_init (&rmdemux->segment, GST_FORMAT_TIME);
711 rmdemux->running = FALSE;
713 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
719 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
721 switch (transition) {
722 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
724 case GST_STATE_CHANGE_PAUSED_TO_READY:{
725 gst_rmdemux_reset (rmdemux);
728 case GST_STATE_CHANGE_READY_TO_NULL:
737 /* this function is called when the pad is activated and should start
740 * We check if we can do random access to decide if we work push or
744 gst_rmdemux_sink_activate (GstPad * sinkpad, GstObject * parent)
749 query = gst_query_new_scheduling ();
751 if (!gst_pad_peer_query (sinkpad, query)) {
752 gst_query_unref (query);
756 pull_mode = gst_query_has_scheduling_mode (query, GST_PAD_MODE_PULL);
757 gst_query_unref (query);
762 GST_DEBUG_OBJECT (sinkpad, "activating pull");
763 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
767 GST_DEBUG_OBJECT (sinkpad, "activating push");
768 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
773 gst_rmdemux_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
774 GstPadMode mode, gboolean active)
779 demux = GST_RMDEMUX (parent);
782 case GST_PAD_MODE_PUSH:
783 demux->seekable = FALSE;
786 case GST_PAD_MODE_PULL:
788 demux->seekable = TRUE;
790 demux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
791 demux->data_offset = G_MAXUINT;
793 gst_pad_start_task (sinkpad, (GstTaskFunction) gst_rmdemux_loop,
796 res = gst_pad_stop_task (sinkpad);
807 /* random access mode - just pass over to our chain function */
809 gst_rmdemux_loop (GstPad * pad)
813 GstFlowReturn ret = GST_FLOW_OK;
816 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
818 GST_LOG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
819 rmdemux->loop_state, rmdemux->offset);
821 switch (rmdemux->state) {
822 case RMDEMUX_STATE_HEADER:
825 case RMDEMUX_STATE_HEADER_DATA:
828 case RMDEMUX_STATE_DATA_PACKET:
829 size = rmdemux->avg_packet_size;
831 case RMDEMUX_STATE_EOS:
832 GST_LOG_OBJECT (rmdemux, "At EOS, pausing task");
836 GST_LOG_OBJECT (rmdemux, "Default: requires %d bytes (state is %d)",
837 (int) rmdemux->size, rmdemux->state);
838 size = rmdemux->size;
842 ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
843 if (ret != GST_FLOW_OK) {
844 if (rmdemux->offset == rmdemux->index_offset) {
845 /* The index isn't available so forget about it */
846 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
847 rmdemux->offset = rmdemux->data_offset;
848 GST_OBJECT_LOCK (rmdemux);
849 rmdemux->running = TRUE;
850 rmdemux->seekable = FALSE;
851 GST_OBJECT_UNLOCK (rmdemux);
854 GST_DEBUG_OBJECT (rmdemux, "Unable to pull %d bytes at offset 0x%08x "
855 "(pull_range returned flow %s, state is %d)", (gint) size,
856 rmdemux->offset, gst_flow_get_name (ret), GST_STATE (rmdemux));
861 size = gst_buffer_get_size (buffer);
863 /* Defer to the chain function */
864 ret = gst_rmdemux_chain (pad, GST_OBJECT_CAST (rmdemux), buffer);
865 if (ret != GST_FLOW_OK) {
866 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
871 rmdemux->offset += size;
873 switch (rmdemux->loop_state) {
874 case RMDEMUX_LOOP_STATE_HEADER:
875 if (rmdemux->offset >= rmdemux->data_offset) {
876 /* It's the end of the header */
877 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
878 rmdemux->offset = rmdemux->index_offset;
881 case RMDEMUX_LOOP_STATE_INDEX:
882 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
883 if (rmdemux->index_offset == 0) {
884 /* We've read the last index */
885 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
886 rmdemux->offset = rmdemux->data_offset;
887 GST_OBJECT_LOCK (rmdemux);
888 rmdemux->running = TRUE;
889 GST_OBJECT_UNLOCK (rmdemux);
891 /* Get the next index */
892 rmdemux->offset = rmdemux->index_offset;
896 case RMDEMUX_LOOP_STATE_DATA:
905 const gchar *reason = gst_flow_get_name (ret);
907 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
908 rmdemux->segment_running = FALSE;
909 gst_pad_pause_task (rmdemux->sinkpad);
911 if (ret == GST_FLOW_EOS) {
912 /* perform EOS logic */
913 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
916 /* for segment playback we need to post when (in stream time)
917 * we stopped, this is either stop (when set) or the duration. */
918 if ((stop = rmdemux->segment.stop) == -1)
919 stop = rmdemux->segment.duration;
921 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
922 gst_element_post_message (GST_ELEMENT (rmdemux),
923 gst_message_new_segment_done (GST_OBJECT (rmdemux),
924 GST_FORMAT_TIME, stop));
925 gst_rmdemux_send_event (rmdemux,
926 gst_event_new_segment_done (GST_FORMAT_TIME, stop));
928 /* normal playback, send EOS to all linked pads */
929 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
930 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
932 } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS) {
933 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
934 (NULL), ("stream stopped, reason %s", reason));
935 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
942 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
946 for (i = 0; i < 4; i++) {
947 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
955 gst_rmdemux_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
957 GstFlowReturn ret = GST_FLOW_OK;
962 GstRMDemux *rmdemux = GST_RMDEMUX (parent);
964 if (rmdemux->base_ts == -1) {
965 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
966 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
967 GST_TIME_ARGS (rmdemux->base_ts));
970 gst_adapter_push (rmdemux->adapter, buffer);
972 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %" G_GSIZE_FORMAT,
973 gst_buffer_get_size (buffer));
976 avail = gst_adapter_available (rmdemux->adapter);
978 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
979 switch (rmdemux->state) {
980 case RMDEMUX_STATE_HEADER:
982 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
985 data = gst_adapter_map (rmdemux->adapter, HEADER_SIZE);
987 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
988 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
989 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
991 /* Sanity-check. We assume that the FOURCC is printable ASCII */
992 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
993 /* Failed. Remain in HEADER state, try again... We flush only
994 * the actual FOURCC, not the entire header, because we could
995 * need to resync anywhere at all... really, this should never
997 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
999 gst_adapter_unmap (rmdemux->adapter);
1000 gst_adapter_flush (rmdemux->adapter, 4);
1005 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1007 " size=%08x object_version=%d",
1008 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1009 rmdemux->object_version);
1011 gst_adapter_unmap (rmdemux->adapter);
1012 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1014 switch (rmdemux->object_id) {
1015 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1016 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1018 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1019 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1021 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1022 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1024 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1025 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1027 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1028 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1030 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1031 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1034 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1039 case RMDEMUX_STATE_HEADER_UNKNOWN:
1041 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1044 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1045 GST_FOURCC_ARGS (rmdemux->object_id));
1047 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1048 rmdemux->state = RMDEMUX_STATE_HEADER;
1051 case RMDEMUX_STATE_HEADER_RMF:
1053 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1056 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1057 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1058 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1059 gst_adapter_unmap (rmdemux->adapter);
1060 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1062 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1064 rmdemux->state = RMDEMUX_STATE_HEADER;
1067 case RMDEMUX_STATE_HEADER_PROP:
1069 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1072 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1073 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1074 gst_adapter_unmap (rmdemux->adapter);
1075 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1077 rmdemux->state = RMDEMUX_STATE_HEADER;
1080 case RMDEMUX_STATE_HEADER_MDPR:
1082 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1085 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1086 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1087 gst_adapter_unmap (rmdemux->adapter);
1088 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1090 rmdemux->state = RMDEMUX_STATE_HEADER;
1093 case RMDEMUX_STATE_HEADER_CONT:
1095 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1098 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1099 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1100 gst_adapter_unmap (rmdemux->adapter);
1101 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1103 rmdemux->state = RMDEMUX_STATE_HEADER;
1106 case RMDEMUX_STATE_HEADER_DATA:
1108 /* If we haven't already done so then signal there are no more pads */
1109 if (!rmdemux->have_pads) {
1110 GST_LOG_OBJECT (rmdemux, "no more pads");
1111 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1112 rmdemux->have_pads = TRUE;
1115 /* The actual header is only 8 bytes */
1116 rmdemux->size = DATA_SIZE;
1117 GST_LOG_OBJECT (rmdemux, "data available %" G_GSIZE_FORMAT,
1118 gst_adapter_available (rmdemux->adapter));
1119 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1122 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1123 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1124 gst_adapter_unmap (rmdemux->adapter);
1125 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1127 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1130 case RMDEMUX_STATE_HEADER_INDX:
1132 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1135 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1136 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1137 /* Only flush the header */
1138 gst_adapter_unmap (rmdemux->adapter);
1139 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1141 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1144 case RMDEMUX_STATE_INDX_DATA:
1146 /* There's not always an data to get... */
1147 if (rmdemux->size > 0) {
1148 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1151 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1152 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1153 gst_adapter_unmap (rmdemux->adapter);
1154 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1157 rmdemux->state = RMDEMUX_STATE_HEADER;
1160 case RMDEMUX_STATE_DATA_PACKET:
1164 if (gst_adapter_available (rmdemux->adapter) < 2)
1167 gst_adapter_copy (rmdemux->adapter, header, 0, 2);
1168 version = RMDEMUX_GUINT16_GET (header);
1169 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1171 if (version == 0 || version == 1) {
1174 if (gst_adapter_available (rmdemux->adapter) < 4)
1177 gst_adapter_copy (rmdemux->adapter, header, 0, 4);
1179 length = RMDEMUX_GUINT16_GET (header + 2);
1180 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1183 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1184 /* Invalid, just drop it */
1185 gst_adapter_flush (rmdemux->adapter, 4);
1189 avail = gst_adapter_available (rmdemux->adapter);
1193 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1196 /* flush version and length */
1197 gst_adapter_flush (rmdemux->adapter, 4);
1200 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1202 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1203 rmdemux->chunk_index++;
1206 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1207 rmdemux->state = RMDEMUX_STATE_HEADER;
1210 gst_adapter_flush (rmdemux->adapter, 2);
1212 if (rmdemux->data_offset == 0) {
1213 GST_LOG_OBJECT (rmdemux,
1214 "No further data, internal demux state EOS");
1215 rmdemux->state = RMDEMUX_STATE_EOS;
1217 rmdemux->state = RMDEMUX_STATE_HEADER;
1221 case RMDEMUX_STATE_EOS:
1222 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1225 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1234 static GstRMDemuxStream *
1235 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1239 for (cur = rmdemux->streams; cur; cur = cur->next) {
1240 GstRMDemuxStream *stream = cur->data;
1242 if (stream->id == id) {
1251 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1255 for (cur = rmdemux->streams; cur; cur = cur->next) {
1256 GstRMDemuxStream *stream = cur->data;
1258 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1259 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1261 switch (GST_EVENT_TYPE (event)) {
1262 case GST_EVENT_FLUSH_STOP:
1263 stream->last_ts = -1;
1264 stream->next_ts = -1;
1265 stream->last_seq = -1;
1266 stream->next_seq = -1;
1267 stream->last_flow = GST_FLOW_OK;
1272 gst_event_ref (event);
1273 gst_pad_push_event (stream->pad, event);
1275 gst_event_unref (event);
1279 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1281 GstCaps *stream_caps = NULL;
1282 const gchar *codec_tag = NULL;
1283 gchar *codec_name = NULL;
1286 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1287 char *name = g_strdup_printf ("video_%u", rmdemux->n_video_streams);
1290 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1293 codec_tag = GST_TAG_VIDEO_CODEC;
1295 switch (stream->fourcc) {
1296 case GST_RM_VDO_RV10:
1299 case GST_RM_VDO_RV20:
1302 case GST_RM_VDO_RV30:
1305 case GST_RM_VDO_RV40:
1309 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1310 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1311 GST_WARNING_OBJECT (rmdemux,
1312 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1313 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1318 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1320 "format", G_TYPE_INT,
1321 (int) stream->format,
1322 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1326 gst_caps_set_simple (stream_caps,
1327 "width", G_TYPE_INT, stream->width,
1328 "height", G_TYPE_INT, stream->height,
1329 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1330 stream->framerate_denominator, NULL);
1332 rmdemux->n_video_streams++;
1334 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1335 char *name = g_strdup_printf ("audio_%u", rmdemux->n_audio_streams);
1338 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1339 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1342 codec_tag = GST_TAG_AUDIO_CODEC;
1344 switch (stream->fourcc) {
1345 /* Older RealAudio Codecs */
1346 case GST_RM_AUD_14_4:
1350 case GST_RM_AUD_28_8:
1354 /* DolbyNet (Dolby AC3, low bitrate) */
1355 case GST_RM_AUD_DNET:
1357 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1358 (int) stream->rate, NULL);
1359 stream->needs_descrambling = TRUE;
1360 stream->subpackets_needed = 1;
1361 stream->subpackets = NULL;
1365 case GST_RM_AUD_RAAC:
1366 case GST_RM_AUD_RACP:
1368 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1369 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1370 if (stream->extra_data_size > 0) {
1371 /* strip off an unknown byte in the extra data */
1372 stream->extra_data_size--;
1373 stream->extra_data++;
1375 stream->needs_descrambling = TRUE;
1376 stream->subpackets_needed = 1;
1377 stream->subpackets = NULL;
1381 case GST_RM_AUD_ATRC:
1382 stream_caps = gst_caps_new_empty_simple ("audio/x-vnd.sony.atrac3");
1383 stream->needs_descrambling = TRUE;
1384 stream->subpackets_needed = stream->height;
1385 stream->subpackets = NULL;
1388 /* RealAudio G2 audio */
1389 case GST_RM_AUD_COOK:
1391 stream->needs_descrambling = TRUE;
1392 stream->subpackets_needed = stream->height;
1393 stream->subpackets = NULL;
1396 /* RALF is lossless */
1397 case GST_RM_AUD_RALF:
1398 GST_DEBUG_OBJECT (rmdemux, "RALF");
1399 stream_caps = gst_caps_new_empty_simple ("audio/x-ralf-mpeg4-generic");
1402 case GST_RM_AUD_SIPR:
1404 if (stream->flavor > 3) {
1405 GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
1411 GST_DEBUG_OBJECT (rmdemux, "SIPR");
1412 stream_caps = gst_caps_new_empty_simple ("audio/x-sipro");
1413 stream->needs_descrambling = TRUE;
1414 stream->subpackets_needed = stream->height;
1415 stream->subpackets = NULL;
1416 stream->leaf_size = sipr_subpk_size[stream->flavor];
1421 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1422 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1423 GST_WARNING_OBJECT (rmdemux,
1424 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1425 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1431 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1432 (int) version, NULL);
1436 gst_caps_set_simple (stream_caps,
1437 "flavor", G_TYPE_INT, (int) stream->flavor,
1438 "rate", G_TYPE_INT, (int) stream->rate,
1439 "channels", G_TYPE_INT, (int) stream->n_channels,
1440 "width", G_TYPE_INT, (int) stream->sample_width,
1441 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1442 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1443 "bitrate", G_TYPE_INT, (int) stream->bitrate,
1444 "height", G_TYPE_INT, (int) stream->height, NULL);
1446 rmdemux->n_audio_streams++;
1448 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1454 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1455 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1456 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1457 g_slist_length (rmdemux->streams));
1459 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1462 if (stream->pad && stream_caps) {
1464 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1465 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1467 /* add codec_data if there is any */
1468 if (stream->extra_data_size > 0) {
1471 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1472 gst_buffer_fill (buffer, 0, stream->extra_data, stream->extra_data_size);
1474 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1477 gst_buffer_unref (buffer);
1480 gst_pad_use_fixed_caps (stream->pad);
1482 gst_pad_set_caps (stream->pad, stream_caps);
1483 gst_pad_set_event_function (stream->pad,
1484 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1485 gst_pad_set_query_function (stream->pad,
1486 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1488 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1489 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1490 gst_pad_set_active (stream->pad, TRUE);
1491 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1492 gst_pad_push_event (stream->pad, gst_event_new_stream_start ());
1494 codec_name = gst_pb_utils_get_codec_description (stream_caps);
1496 /* save for later, we must send the tags after the newsegment event */
1497 if (codec_tag != NULL && codec_name != NULL) {
1498 if (stream->pending_tags == NULL)
1499 stream->pending_tags = gst_tag_list_new_empty ();
1500 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1501 codec_tag, codec_name, NULL);
1502 g_free (codec_name);
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;
1564 guint32 max_bitrate;
1565 guint32 avg_bitrate;
1567 stream = g_new0 (GstRMDemuxStream, 1);
1569 stream->id = RMDEMUX_GUINT16_GET (data);
1570 stream->index = NULL;
1571 stream->seek_offset = 0;
1572 stream->last_ts = -1;
1573 stream->next_ts = -1;
1574 stream->last_flow = GST_FLOW_OK;
1575 stream->discont = TRUE;
1576 stream->adapter = gst_adapter_new ();
1577 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1579 /* parse the bitrates */
1580 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1581 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1582 stream->bitrate = avg_bitrate;
1583 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1584 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1585 if (max_bitrate != 0) {
1586 if (stream->pending_tags == NULL)
1587 stream->pending_tags = gst_tag_list_new_empty ();
1588 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1589 GST_TAG_MAXIMUM_BITRATE, max_bitrate, NULL);
1591 if (avg_bitrate != 0) {
1592 if (stream->pending_tags == NULL)
1593 stream->pending_tags = gst_tag_list_new_empty ();
1594 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1595 GST_TAG_BITRATE, avg_bitrate, NULL);
1599 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1600 length - offset, &str_len);
1602 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1603 length - offset, &str_len);
1606 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1608 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1609 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1611 * so, we should not rely on it to know which stream type it is
1614 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1615 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1617 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1618 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1619 } else if (strcmp (stream2_type_string,
1620 "video/x-pn-multirate-realvideo") == 0) {
1621 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1622 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1623 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1624 } else if (strcmp (stream2_type_string,
1625 "audio/x-pn-multirate-realaudio") == 0) {
1626 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1627 } else if (strcmp (stream2_type_string,
1628 "audio/x-pn-multirate-realaudio-live") == 0) {
1629 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1630 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1631 /* Another audio type found in the real testsuite */
1632 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1633 } else if (strcmp (stream1_type_string, "") == 0 &&
1634 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1635 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1637 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1638 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1639 stream1_type_string, stream2_type_string);
1641 g_free (stream1_type_string);
1642 g_free (stream2_type_string);
1646 stream->subtype = stream_type;
1647 switch (stream_type) {
1649 case GST_RMDEMUX_STREAM_VIDEO:
1650 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1651 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1652 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1653 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1654 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1655 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1656 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1657 stream->extra_data_size = length - (offset + 26);
1658 stream->extra_data = (guint8 *) data + offset + 26;
1659 /* Natural way to represent framerates here requires unsigned 32 bit
1660 * numerator, which we don't have. For the nasty case, approximate...
1663 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1664 RMDEMUX_GUINT16_GET (data + offset + 24);
1665 if (numerator > G_MAXINT) {
1666 stream->framerate_numerator = (gint) (numerator >> 1);
1667 stream->framerate_denominator = 32768;
1669 stream->framerate_numerator = (gint) numerator;
1670 stream->framerate_denominator = 65536;
1674 GST_DEBUG_OBJECT (rmdemux,
1675 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1676 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1677 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1678 stream->rate, stream->framerate_numerator,
1679 stream->framerate_denominator, stream->subformat, stream->format,
1680 stream->extra_data_size);
1682 case GST_RMDEMUX_STREAM_AUDIO:{
1683 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1684 GST_INFO ("stream version = %u", stream->version);
1685 switch (stream->version) {
1687 stream->fourcc = GST_RM_AUD_14_4;
1688 stream->packet_size = 20;
1689 stream->rate = 8000;
1690 stream->n_channels = 1;
1691 stream->sample_width = 16;
1693 stream->leaf_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 + 48);
1703 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1704 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1705 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1706 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1707 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1708 stream->extra_data_size);
1709 if (length - (offset + 73) >= stream->extra_data_size) {
1710 stream->extra_data = (guint8 *) data + offset + 73;
1712 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1713 stream->extra_data_size = 0;
1717 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1718 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1719 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1720 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1721 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1722 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1723 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1724 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1725 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1726 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1727 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1728 stream->extra_data_size);
1729 if (length - (offset + 78) >= stream->extra_data_size) {
1730 stream->extra_data = (guint8 *) data + offset + 78;
1732 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1733 stream->extra_data_size = 0;
1737 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1742 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1743 GST_DEBUG_OBJECT (rmdemux,
1744 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1745 stream->rate, stream->sample_width, stream->n_channels);
1749 case GST_RMDEMUX_STREAM_FILEINFO:
1753 /* Length of this section */
1754 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1755 RMDEMUX_GUINT32_GET (data + offset));
1758 /* Unknown : 00 00 00 00 */
1761 /* Number of variables that would follow (loop iterations) */
1762 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1765 while (element_nb) {
1766 /* Category Id : 00 00 00 XX 00 00 */
1770 offset += re_skip_pascal_string (data + offset);
1772 /* Variable Value Type */
1773 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1774 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1777 /* Variable Value */
1778 offset += re_skip_pascal_string (data + offset);
1784 case GST_RMDEMUX_STREAM_UNKNOWN:
1789 gst_rmdemux_add_stream (rmdemux, stream);
1793 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1798 n = RMDEMUX_GUINT32_GET (data);
1799 id = RMDEMUX_GUINT16_GET (data + 4);
1800 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1802 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1805 /* Point to the next index_stream */
1806 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1808 /* Return the length of the index */
1813 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1818 GstRMDemuxIndex *index;
1820 /* The number of index records */
1823 if (rmdemux->index_stream == NULL)
1826 /* don't parse the index a second time when operating pull-based and
1827 * reaching the end of the file */
1828 if (rmdemux->index_stream->index_length > 0) {
1829 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1833 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1834 rmdemux->index_stream->index = index;
1835 rmdemux->index_stream->index_length = n;
1837 for (i = 0; i < n; i++) {
1838 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1839 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1841 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1842 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1849 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1851 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1852 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1853 rmdemux->chunk_index = 0;
1854 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1855 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1859 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1863 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1865 GST_LOG_OBJECT (rmdemux, "tags: %" GST_PTR_FORMAT, tags);
1867 rmdemux->pending_tags =
1868 gst_tag_list_merge (rmdemux->pending_tags, tags, GST_TAG_MERGE_APPEND);
1871 static GstFlowReturn
1872 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1877 /* store the value */
1878 stream->last_flow = ret;
1880 /* if it's success we can return the value right away */
1881 if (ret == GST_FLOW_OK)
1884 /* any other error that is not-linked can be returned right
1886 if (ret != GST_FLOW_NOT_LINKED)
1889 for (cur = rmdemux->streams; cur; cur = cur->next) {
1890 GstRMDemuxStream *ostream = cur->data;
1892 ret = ostream->last_flow;
1893 /* some other return value (must be SUCCESS but we can return
1894 * other values as well) */
1895 if (ret != GST_FLOW_NOT_LINKED)
1898 /* if we get here, all other pads were unlinked and we return
1899 * NOT_LINKED then */
1905 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1906 GstRMDemuxStream * stream)
1908 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1911 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1912 stream->subpackets->len);
1913 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1914 g_ptr_array_set_size (stream->subpackets, 0);
1917 static GstFlowReturn
1918 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1920 GstFlowReturn ret = GST_FLOW_ERROR;
1923 guint packet_size = stream->packet_size;
1924 guint height = stream->subpackets->len;
1925 guint leaf_size = stream->leaf_size;
1928 g_assert (stream->height == height);
1930 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1933 outbuf = gst_buffer_new_and_alloc (height * packet_size);
1934 gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
1936 for (p = 0; p < height; ++p) {
1937 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1940 gst_buffer_map (b, &map, GST_MAP_READ);
1943 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1945 for (x = 0; x < packet_size / leaf_size; ++x) {
1948 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1950 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1951 memcpy (outmap.data + leaf_size * idx, map.data + leaf_size * x,
1954 gst_buffer_unmap (b, &map);
1956 gst_buffer_unmap (outbuf, &outmap);
1958 /* some decoders, such as realaudiodec, need to be fed in packet units */
1959 for (p = 0; p < height; ++p) {
1963 gst_buffer_copy_region (outbuf, GST_BUFFER_COPY_ALL, p * packet_size,
1966 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1967 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1969 if (stream->discont) {
1970 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1971 stream->discont = FALSE;
1974 ret = gst_pad_push (stream->pad, subbuf);
1975 if (ret != GST_FLOW_OK)
1979 gst_buffer_unref (outbuf);
1981 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1986 static GstFlowReturn
1987 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1988 GstRMDemuxStream * stream)
1992 buf = g_ptr_array_index (stream->subpackets, 0);
1993 g_ptr_array_index (stream->subpackets, 0) = NULL;
1994 g_ptr_array_set_size (stream->subpackets, 0);
1996 buf = gst_rm_utils_descramble_dnet_buffer (buf);
1998 if (stream->discont) {
1999 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2000 stream->discont = FALSE;
2002 return gst_pad_push (stream->pad, buf);
2005 static GstFlowReturn
2006 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
2007 GstRMDemuxStream * stream)
2010 GstBuffer *buf, *outbuf;
2011 guint frames, index, i;
2013 GstClockTime timestamp;
2017 buf = g_ptr_array_index (stream->subpackets, 0);
2018 g_ptr_array_index (stream->subpackets, 0) = NULL;
2019 g_ptr_array_set_size (stream->subpackets, 0);
2021 gst_buffer_map (buf, &map, GST_MAP_READ);
2022 timestamp = GST_BUFFER_TIMESTAMP (buf);
2024 frames = (map.data[1] & 0xf0) >> 4;
2025 index = 2 * frames + 2;
2027 for (i = 0; i < frames; i++) {
2028 guint len = (map.data[i * 2 + 2] << 8) | map.data[i * 2 + 3];
2030 outbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, index, len);
2032 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2036 if (stream->discont) {
2037 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2038 stream->discont = FALSE;
2040 res = gst_pad_push (stream->pad, outbuf);
2041 if (res != GST_FLOW_OK)
2044 gst_buffer_unmap (buf, &map);
2045 gst_buffer_unref (buf);
2049 static GstFlowReturn
2050 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2051 GstRMDemuxStream * stream)
2056 guint packet_size = stream->packet_size;
2057 guint height = stream->subpackets->len;
2060 g_assert (stream->height == height);
2062 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2063 stream->leaf_size, height);
2065 outbuf = gst_buffer_new_and_alloc (height * packet_size);
2066 gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
2068 for (p = 0; p < height; ++p) {
2069 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2072 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
2074 gst_buffer_extract (b, 0, outmap.data + packet_size * p, packet_size);
2076 gst_buffer_unmap (outbuf, &outmap);
2078 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
2079 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
2081 if (stream->discont) {
2082 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2083 stream->discont = FALSE;
2086 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2088 ret = gst_pad_push (stream->pad, outbuf);
2090 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2095 static GstFlowReturn
2096 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2097 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2101 if (stream->subpackets == NULL)
2102 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2104 GST_LOG ("Got subpacket %u/%u, len=%" G_GSIZE_FORMAT ", key=%d",
2105 stream->subpackets->len + 1, stream->subpackets_needed,
2106 gst_buffer_get_size (buf), keyframe);
2108 if (keyframe && stream->subpackets->len > 0) {
2109 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2112 g_ptr_array_add (stream->subpackets, buf);
2114 if (stream->subpackets->len < stream->subpackets_needed)
2117 g_assert (stream->subpackets->len >= 1);
2119 switch (stream->fourcc) {
2120 case GST_RM_AUD_DNET:
2121 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2123 case GST_RM_AUD_COOK:
2124 case GST_RM_AUD_ATRC:
2125 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2127 case GST_RM_AUD_RAAC:
2128 case GST_RM_AUD_RACP:
2129 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2131 case GST_RM_AUD_SIPR:
2132 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2135 g_assert_not_reached ();
2142 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2143 guint8 * data, GstClockTime timestamp)
2147 GstClockTime ts = timestamp;
2149 if (timestamp == GST_CLOCK_TIME_NONE)
2152 /* only adjust when we have a stream with B frames */
2153 if (stream->format < 0x20200002)
2156 /* Fix timestamp. */
2157 switch (stream->fourcc) {
2158 case GST_RM_VDO_RV10:
2160 case GST_RM_VDO_RV20:
2163 * Bit 1- 2: frame type
2165 * Bit 10-22: sequence number
2168 frame_type = (data[0] >> 6) & 0x03;
2169 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2172 case GST_RM_VDO_RV30:
2176 * Bit 3: skip packet if 1
2177 * Bit 4- 5: frame type
2179 * Bit 13-25: sequence number
2182 frame_type = (data[0] >> 3) & 0x03;
2183 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2186 case GST_RM_VDO_RV40:
2189 * Bit 1: skip packet if 1
2190 * Bit 2- 3: frame type
2192 * Bit 14-26: sequence number
2195 frame_type = (data[0] >> 5) & 0x03;
2196 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2200 goto unknown_version;
2203 switch (frame_type) {
2207 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2209 if (stream->next_ts == -1)
2210 stream->next_ts = timestamp;
2212 timestamp = stream->next_ts;
2213 stream->last_ts = stream->next_ts;
2214 stream->next_ts = ts;
2215 stream->last_seq = stream->next_seq;
2216 stream->next_seq = seq;
2221 GST_LOG_OBJECT (rmdemux, "P frame");
2223 timestamp = stream->last_ts = stream->next_ts;
2224 if (seq < stream->next_seq)
2225 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2227 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2228 stream->last_seq = stream->next_seq;
2229 stream->next_seq = seq;
2234 GST_LOG_OBJECT (rmdemux, "B frame");
2236 if (seq < stream->last_seq) {
2238 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2240 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2245 goto unknown_frame_type;
2249 GST_LOG_OBJECT (rmdemux,
2250 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2251 GST_TIME_ARGS (timestamp));
2258 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2259 ("Unknown version: %i.", stream->version), (NULL));
2260 return GST_FLOW_ERROR;
2265 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2266 frame_type), (NULL));
2267 return GST_FLOW_ERROR;
2271 #define PARSE_NUMBER(data, size, number, label) \
2275 number = GST_READ_UINT16_BE (data); \
2276 if (!(number & 0xc000)) { \
2279 number = GST_READ_UINT32_BE (data); \
2289 static GstFlowReturn
2290 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2291 GstBuffer * in, guint offset, guint16 version,
2292 GstClockTime timestamp, gboolean key)
2299 gst_buffer_map (in, &map, GST_MAP_READ);
2301 data = map.data + offset;
2302 size = map.size - offset;
2304 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2305 * was previously for that given stream. */
2306 ret = stream->last_flow;
2312 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2313 guint fragment_size;
2314 GstBuffer *fragment;
2316 pkg_header = *data++;
2320 * bit 7: 1=last block in block chain
2321 * bit 6: 1=short header (only one block?)
2323 if ((pkg_header & 0xc0) == 0x40) {
2324 /* skip unknown byte */
2330 if ((pkg_header & 0x40) == 0) {
2331 pkg_subseq = (*data++) & 0x7f;
2338 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2341 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2345 goto not_enough_data;
2347 pkg_seqnum = *data++;
2351 GST_DEBUG_OBJECT (rmdemux,
2352 "seq %d, subseq %d, offset %d, length %d, size %" G_GSIZE_FORMAT
2353 ", header %02x", pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size,
2356 /* calc size of fragment */
2357 if ((pkg_header & 0xc0) == 0x80) {
2358 fragment_size = pkg_offset;
2360 if ((pkg_header & 0xc0) == 0)
2361 fragment_size = size;
2363 fragment_size = pkg_length;
2365 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2367 /* get the fragment */
2369 gst_buffer_copy_region (in, GST_BUFFER_COPY_ALL, data - map.data,
2372 if (pkg_subseq == 1) {
2373 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2374 gst_adapter_clear (stream->adapter);
2375 stream->frag_current = 0;
2376 stream->frag_count = 0;
2377 stream->frag_length = pkg_length;
2378 } else if (pkg_subseq == 0) {
2379 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2380 stream->frag_current = 0;
2381 stream->frag_count = 0;
2382 stream->frag_length = fragment_size;
2385 /* put fragment in adapter */
2386 gst_adapter_push (stream->adapter, fragment);
2387 stream->frag_offset[stream->frag_count] = stream->frag_current;
2388 stream->frag_current += fragment_size;
2389 stream->frag_count++;
2391 if (stream->frag_count > MAX_FRAGS)
2392 goto too_many_fragments;
2394 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2395 stream->frag_current, stream->frag_length);
2397 /* flush fragment when complete */
2398 if (stream->frag_current >= stream->frag_length) {
2405 /* calculate header size, which is:
2406 * 1 byte for the number of fragments - 1
2407 * for each fragment:
2408 * 4 bytes 0x00000001 little endian
2409 * 4 bytes fragment offset
2411 * This is also the matroska header for realvideo, the decoder needs the
2412 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2413 * in front of the data.
2415 header_size = 1 + (8 * (stream->frag_count));
2417 GST_DEBUG_OBJECT (rmdemux,
2418 "fragmented completed. count %d, header_size %u", stream->frag_count,
2421 avail = gst_adapter_available (stream->adapter);
2423 out = gst_buffer_new_and_alloc (header_size + avail);
2424 gst_buffer_map (out, &outmap, GST_MAP_WRITE);
2425 outdata = outmap.data;
2428 *outdata++ = stream->frag_count - 1;
2429 for (i = 0; i < stream->frag_count; i++) {
2430 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2432 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2436 /* copy packet data after the header now */
2437 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2438 gst_adapter_flush (stream->adapter, avail);
2440 stream->frag_current = 0;
2441 stream->frag_count = 0;
2442 stream->frag_length = 0;
2444 if (timestamp != -1) {
2445 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2446 timestamp -= rmdemux->first_ts;
2450 if (rmdemux->base_ts != -1)
2451 timestamp += rmdemux->base_ts;
2454 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2456 gst_buffer_unmap (out, &outmap);
2458 GST_BUFFER_TIMESTAMP (out) = timestamp;
2460 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2461 GST_TIME_ARGS (timestamp));
2463 if (stream->discont) {
2464 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2465 stream->discont = FALSE;
2469 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DELTA_UNIT);
2472 ret = gst_pad_push (stream->pad, out);
2473 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2474 if (ret != GST_FLOW_OK)
2477 timestamp = GST_CLOCK_TIME_NONE;
2479 data += fragment_size;
2480 size -= fragment_size;
2482 GST_DEBUG_OBJECT (rmdemux, "%" G_GSIZE_FORMAT " bytes left", size);
2485 gst_buffer_unmap (in, &map);
2486 gst_buffer_unref (in);
2493 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2500 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2501 ("Got more fragments (%u) than can be handled (%u)",
2502 stream->frag_count, MAX_FRAGS), (NULL));
2503 ret = GST_FLOW_ERROR;
2508 static GstFlowReturn
2509 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2510 GstBuffer * in, guint offset, guint16 version,
2511 GstClockTime timestamp, gboolean key)
2516 buffer = gst_buffer_copy_region (in, GST_BUFFER_COPY_MEMORY, offset, -1);
2518 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2519 timestamp -= rmdemux->first_ts;
2523 if (rmdemux->base_ts != -1)
2524 timestamp += rmdemux->base_ts;
2526 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2528 if (stream->needs_descrambling) {
2529 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2530 GST_TIME_ARGS (timestamp));
2531 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2533 GST_LOG_OBJECT (rmdemux,
2534 "Pushing buffer of size %" G_GSIZE_FORMAT ", timestamp %"
2535 GST_TIME_FORMAT "to pad %s", gst_buffer_get_size (buffer),
2536 GST_TIME_ARGS (timestamp), GST_PAD_NAME (stream->pad));
2538 if (stream->discont) {
2539 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2540 stream->discont = FALSE;
2542 ret = gst_pad_push (stream->pad, buffer);
2545 gst_buffer_unref (in);
2550 static GstFlowReturn
2551 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2554 GstRMDemuxStream *stream;
2556 GstFlowReturn cret, ret;
2557 GstClockTime timestamp;
2564 gst_buffer_map (in, &map, GST_MAP_READ);
2569 id = RMDEMUX_GUINT16_GET (data);
2571 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2572 if (!stream || !stream->pad)
2573 goto unknown_stream;
2575 /* timestamp in Msec */
2576 ts = RMDEMUX_GUINT32_GET (data + 2);
2577 timestamp = ts * GST_MSECOND;
2579 rmdemux->segment.position = timestamp;
2581 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2582 GST_TIME_FORMAT ", size %" G_GSIZE_FORMAT ", version=%d, ts=%u", id,
2583 GST_TIME_ARGS (timestamp), size, version, ts);
2585 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2586 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2587 GST_TIME_ARGS (timestamp));
2588 rmdemux->first_ts = timestamp;
2591 /* skip stream_id and timestamp */
2596 flags = GST_READ_UINT8 (data + 1);
2601 /* version 1 has an extra byte */
2606 offset = data - map.data;
2607 gst_buffer_unmap (in, &map);
2609 key = (flags & 0x02) != 0;
2610 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2612 if (rmdemux->need_newsegment) {
2615 event = gst_event_new_segment (&rmdemux->segment);
2617 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2618 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2620 gst_rmdemux_send_event (rmdemux, event);
2621 rmdemux->need_newsegment = FALSE;
2623 if (rmdemux->pending_tags != NULL) {
2624 gst_rmdemux_send_event (rmdemux,
2625 gst_event_new_tag ("GstDemuxer", rmdemux->pending_tags));
2626 rmdemux->pending_tags = NULL;
2630 if (stream->pending_tags != NULL) {
2631 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2632 gst_pad_push_event (stream->pad, gst_event_new_tag ("GstDemuxer",
2633 stream->pending_tags));
2634 stream->pending_tags = NULL;
2637 if ((rmdemux->offset + size) <= stream->seek_offset) {
2638 GST_DEBUG_OBJECT (rmdemux,
2639 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%"
2640 G_GSIZE_FORMAT, stream->id, stream->seek_offset, rmdemux->offset, size);
2642 gst_buffer_unref (in);
2646 /* do special headers */
2647 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2649 gst_rmdemux_parse_video_packet (rmdemux, stream, in, offset,
2650 version, timestamp, key);
2651 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2653 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, offset,
2654 version, timestamp, key);
2656 gst_buffer_unref (in);
2660 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2668 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2670 gst_buffer_unmap (in, &map);
2671 gst_buffer_unref (in);
2677 gst_rmdemux_plugin_init (GstPlugin * plugin)
2679 return gst_element_register (plugin, "rmdemux",
2680 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);