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));
926 /* normal playback, send EOS to all linked pads */
927 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
928 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
930 } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS) {
931 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
932 (NULL), ("stream stopped, reason %s", reason));
933 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
940 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
944 for (i = 0; i < 4; i++) {
945 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
953 gst_rmdemux_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
955 GstFlowReturn ret = GST_FLOW_OK;
960 GstRMDemux *rmdemux = GST_RMDEMUX (parent);
962 if (rmdemux->base_ts == -1) {
963 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
964 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
965 GST_TIME_ARGS (rmdemux->base_ts));
968 gst_adapter_push (rmdemux->adapter, buffer);
970 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %" G_GSIZE_FORMAT,
971 gst_buffer_get_size (buffer));
974 avail = gst_adapter_available (rmdemux->adapter);
976 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
977 switch (rmdemux->state) {
978 case RMDEMUX_STATE_HEADER:
980 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
983 data = gst_adapter_map (rmdemux->adapter, HEADER_SIZE);
985 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
986 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
987 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
989 /* Sanity-check. We assume that the FOURCC is printable ASCII */
990 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
991 /* Failed. Remain in HEADER state, try again... We flush only
992 * the actual FOURCC, not the entire header, because we could
993 * need to resync anywhere at all... really, this should never
995 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
997 gst_adapter_unmap (rmdemux->adapter);
998 gst_adapter_flush (rmdemux->adapter, 4);
1003 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1005 " size=%08x object_version=%d",
1006 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1007 rmdemux->object_version);
1009 gst_adapter_unmap (rmdemux->adapter);
1010 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1012 switch (rmdemux->object_id) {
1013 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1014 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1016 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1017 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1019 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1020 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1022 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1023 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1025 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1026 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1028 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1029 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1032 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1037 case RMDEMUX_STATE_HEADER_UNKNOWN:
1039 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1042 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1043 GST_FOURCC_ARGS (rmdemux->object_id));
1045 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1046 rmdemux->state = RMDEMUX_STATE_HEADER;
1049 case RMDEMUX_STATE_HEADER_RMF:
1051 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1054 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1055 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1056 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1057 gst_adapter_unmap (rmdemux->adapter);
1058 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1060 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1062 rmdemux->state = RMDEMUX_STATE_HEADER;
1065 case RMDEMUX_STATE_HEADER_PROP:
1067 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1070 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1071 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1072 gst_adapter_unmap (rmdemux->adapter);
1073 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1075 rmdemux->state = RMDEMUX_STATE_HEADER;
1078 case RMDEMUX_STATE_HEADER_MDPR:
1080 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1083 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1084 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1085 gst_adapter_unmap (rmdemux->adapter);
1086 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1088 rmdemux->state = RMDEMUX_STATE_HEADER;
1091 case RMDEMUX_STATE_HEADER_CONT:
1093 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1096 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1097 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1098 gst_adapter_unmap (rmdemux->adapter);
1099 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1101 rmdemux->state = RMDEMUX_STATE_HEADER;
1104 case RMDEMUX_STATE_HEADER_DATA:
1106 /* If we haven't already done so then signal there are no more pads */
1107 if (!rmdemux->have_pads) {
1108 GST_LOG_OBJECT (rmdemux, "no more pads");
1109 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1110 rmdemux->have_pads = TRUE;
1113 /* The actual header is only 8 bytes */
1114 rmdemux->size = DATA_SIZE;
1115 GST_LOG_OBJECT (rmdemux, "data available %" G_GSIZE_FORMAT,
1116 gst_adapter_available (rmdemux->adapter));
1117 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1120 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1121 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1122 gst_adapter_unmap (rmdemux->adapter);
1123 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1125 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1128 case RMDEMUX_STATE_HEADER_INDX:
1130 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1133 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1134 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1135 /* Only flush the header */
1136 gst_adapter_unmap (rmdemux->adapter);
1137 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1139 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1142 case RMDEMUX_STATE_INDX_DATA:
1144 /* There's not always an data to get... */
1145 if (rmdemux->size > 0) {
1146 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1149 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1150 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1151 gst_adapter_unmap (rmdemux->adapter);
1152 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1155 rmdemux->state = RMDEMUX_STATE_HEADER;
1158 case RMDEMUX_STATE_DATA_PACKET:
1162 if (gst_adapter_available (rmdemux->adapter) < 2)
1165 gst_adapter_copy (rmdemux->adapter, header, 0, 2);
1166 version = RMDEMUX_GUINT16_GET (header);
1167 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1169 if (version == 0 || version == 1) {
1172 if (gst_adapter_available (rmdemux->adapter) < 4)
1175 gst_adapter_copy (rmdemux->adapter, header, 0, 4);
1177 length = RMDEMUX_GUINT16_GET (header + 2);
1178 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1181 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1182 /* Invalid, just drop it */
1183 gst_adapter_flush (rmdemux->adapter, 4);
1187 avail = gst_adapter_available (rmdemux->adapter);
1191 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1194 /* flush version and length */
1195 gst_adapter_flush (rmdemux->adapter, 4);
1198 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1200 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1201 rmdemux->chunk_index++;
1204 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1205 rmdemux->state = RMDEMUX_STATE_HEADER;
1208 gst_adapter_flush (rmdemux->adapter, 2);
1210 if (rmdemux->data_offset == 0) {
1211 GST_LOG_OBJECT (rmdemux,
1212 "No further data, internal demux state EOS");
1213 rmdemux->state = RMDEMUX_STATE_EOS;
1215 rmdemux->state = RMDEMUX_STATE_HEADER;
1219 case RMDEMUX_STATE_EOS:
1220 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1223 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1232 static GstRMDemuxStream *
1233 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1237 for (cur = rmdemux->streams; cur; cur = cur->next) {
1238 GstRMDemuxStream *stream = cur->data;
1240 if (stream->id == id) {
1249 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1253 for (cur = rmdemux->streams; cur; cur = cur->next) {
1254 GstRMDemuxStream *stream = cur->data;
1256 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1257 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1259 switch (GST_EVENT_TYPE (event)) {
1260 case GST_EVENT_FLUSH_STOP:
1261 stream->last_ts = -1;
1262 stream->next_ts = -1;
1263 stream->last_seq = -1;
1264 stream->next_seq = -1;
1265 stream->last_flow = GST_FLOW_OK;
1270 gst_event_ref (event);
1271 gst_pad_push_event (stream->pad, event);
1273 gst_event_unref (event);
1277 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1279 GstCaps *stream_caps = NULL;
1280 const gchar *codec_tag = NULL;
1281 gchar *codec_name = NULL;
1284 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1285 char *name = g_strdup_printf ("video_%u", rmdemux->n_video_streams);
1288 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1291 codec_tag = GST_TAG_VIDEO_CODEC;
1293 switch (stream->fourcc) {
1294 case GST_RM_VDO_RV10:
1297 case GST_RM_VDO_RV20:
1300 case GST_RM_VDO_RV30:
1303 case GST_RM_VDO_RV40:
1307 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1308 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1309 GST_WARNING_OBJECT (rmdemux,
1310 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1311 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1316 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1318 "format", G_TYPE_INT,
1319 (int) stream->format,
1320 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1324 gst_caps_set_simple (stream_caps,
1325 "width", G_TYPE_INT, stream->width,
1326 "height", G_TYPE_INT, stream->height,
1327 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1328 stream->framerate_denominator, NULL);
1330 rmdemux->n_video_streams++;
1332 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1333 char *name = g_strdup_printf ("audio_%u", rmdemux->n_audio_streams);
1336 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1337 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1340 codec_tag = GST_TAG_AUDIO_CODEC;
1342 switch (stream->fourcc) {
1343 /* Older RealAudio Codecs */
1344 case GST_RM_AUD_14_4:
1348 case GST_RM_AUD_28_8:
1352 /* DolbyNet (Dolby AC3, low bitrate) */
1353 case GST_RM_AUD_DNET:
1355 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1356 (int) stream->rate, NULL);
1357 stream->needs_descrambling = TRUE;
1358 stream->subpackets_needed = 1;
1359 stream->subpackets = NULL;
1363 case GST_RM_AUD_RAAC:
1364 case GST_RM_AUD_RACP:
1366 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1367 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1368 if (stream->extra_data_size > 0) {
1369 /* strip off an unknown byte in the extra data */
1370 stream->extra_data_size--;
1371 stream->extra_data++;
1373 stream->needs_descrambling = TRUE;
1374 stream->subpackets_needed = 1;
1375 stream->subpackets = NULL;
1379 case GST_RM_AUD_ATRC:
1380 stream_caps = gst_caps_new_empty_simple ("audio/x-vnd.sony.atrac3");
1381 stream->needs_descrambling = TRUE;
1382 stream->subpackets_needed = stream->height;
1383 stream->subpackets = NULL;
1386 /* RealAudio G2 audio */
1387 case GST_RM_AUD_COOK:
1389 stream->needs_descrambling = TRUE;
1390 stream->subpackets_needed = stream->height;
1391 stream->subpackets = NULL;
1394 /* RALF is lossless */
1395 case GST_RM_AUD_RALF:
1396 GST_DEBUG_OBJECT (rmdemux, "RALF");
1397 stream_caps = gst_caps_new_empty_simple ("audio/x-ralf-mpeg4-generic");
1400 case GST_RM_AUD_SIPR:
1402 if (stream->flavor > 3) {
1403 GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
1409 GST_DEBUG_OBJECT (rmdemux, "SIPR");
1410 stream_caps = gst_caps_new_empty_simple ("audio/x-sipro");
1411 stream->needs_descrambling = TRUE;
1412 stream->subpackets_needed = stream->height;
1413 stream->subpackets = NULL;
1414 stream->leaf_size = sipr_subpk_size[stream->flavor];
1419 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1420 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1421 GST_WARNING_OBJECT (rmdemux,
1422 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1423 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1429 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1430 (int) version, NULL);
1434 gst_caps_set_simple (stream_caps,
1435 "flavor", G_TYPE_INT, (int) stream->flavor,
1436 "rate", G_TYPE_INT, (int) stream->rate,
1437 "channels", G_TYPE_INT, (int) stream->n_channels,
1438 "width", G_TYPE_INT, (int) stream->sample_width,
1439 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1440 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1441 "bitrate", G_TYPE_INT, (int) stream->bitrate,
1442 "height", G_TYPE_INT, (int) stream->height, NULL);
1444 rmdemux->n_audio_streams++;
1446 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1452 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1453 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1454 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1455 g_slist_length (rmdemux->streams));
1457 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1460 if (stream->pad && stream_caps) {
1462 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1463 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1465 /* add codec_data if there is any */
1466 if (stream->extra_data_size > 0) {
1469 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1470 gst_buffer_fill (buffer, 0, stream->extra_data, stream->extra_data_size);
1472 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1475 gst_buffer_unref (buffer);
1478 gst_pad_use_fixed_caps (stream->pad);
1480 gst_pad_set_caps (stream->pad, stream_caps);
1481 gst_pad_set_event_function (stream->pad,
1482 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1483 gst_pad_set_query_function (stream->pad,
1484 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1486 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1487 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1488 gst_pad_set_active (stream->pad, TRUE);
1489 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1491 codec_name = gst_pb_utils_get_codec_description (stream_caps);
1493 /* save for later, we must send the tags after the newsegment event */
1494 if (codec_tag != NULL && codec_name != NULL) {
1495 if (stream->pending_tags == NULL)
1496 stream->pending_tags = gst_tag_list_new_empty ();
1497 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1498 codec_tag, codec_name, NULL);
1499 g_free (codec_name);
1506 gst_caps_unref (stream_caps);
1510 re_skip_pascal_string (const guint8 * ptr)
1520 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1522 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1523 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1527 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1529 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1530 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1531 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1532 RMDEMUX_GUINT32_GET (data + 8));
1533 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1534 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1535 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1536 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1538 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1539 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1541 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1542 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1543 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1544 rmdemux->index_offset);
1545 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1546 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1547 rmdemux->data_offset);
1548 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1549 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1553 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1555 GstRMDemuxStream *stream;
1556 char *stream1_type_string;
1557 char *stream2_type_string;
1561 guint32 max_bitrate;
1562 guint32 avg_bitrate;
1564 stream = g_new0 (GstRMDemuxStream, 1);
1566 stream->id = RMDEMUX_GUINT16_GET (data);
1567 stream->index = NULL;
1568 stream->seek_offset = 0;
1569 stream->last_ts = -1;
1570 stream->next_ts = -1;
1571 stream->last_flow = GST_FLOW_OK;
1572 stream->discont = TRUE;
1573 stream->adapter = gst_adapter_new ();
1574 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1576 /* parse the bitrates */
1577 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1578 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1579 stream->bitrate = avg_bitrate;
1580 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1581 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1582 if (max_bitrate != 0) {
1583 if (stream->pending_tags == NULL)
1584 stream->pending_tags = gst_tag_list_new_empty ();
1585 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1586 GST_TAG_MAXIMUM_BITRATE, max_bitrate, NULL);
1588 if (avg_bitrate != 0) {
1589 if (stream->pending_tags == NULL)
1590 stream->pending_tags = gst_tag_list_new_empty ();
1591 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1592 GST_TAG_BITRATE, avg_bitrate, NULL);
1596 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1597 length - offset, &str_len);
1599 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1600 length - offset, &str_len);
1603 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1605 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1606 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1608 * so, we should not rely on it to know which stream type it is
1611 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1612 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1614 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1615 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1616 } else if (strcmp (stream2_type_string,
1617 "video/x-pn-multirate-realvideo") == 0) {
1618 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1619 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1620 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1621 } else if (strcmp (stream2_type_string,
1622 "audio/x-pn-multirate-realaudio") == 0) {
1623 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1624 } else if (strcmp (stream2_type_string,
1625 "audio/x-pn-multirate-realaudio-live") == 0) {
1626 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1627 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1628 /* Another audio type found in the real testsuite */
1629 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1630 } else if (strcmp (stream1_type_string, "") == 0 &&
1631 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1632 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1634 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1635 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1636 stream1_type_string, stream2_type_string);
1638 g_free (stream1_type_string);
1639 g_free (stream2_type_string);
1643 stream->subtype = stream_type;
1644 switch (stream_type) {
1646 case GST_RMDEMUX_STREAM_VIDEO:
1647 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1648 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1649 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1650 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1651 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1652 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1653 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1654 stream->extra_data_size = length - (offset + 26);
1655 stream->extra_data = (guint8 *) data + offset + 26;
1656 /* Natural way to represent framerates here requires unsigned 32 bit
1657 * numerator, which we don't have. For the nasty case, approximate...
1660 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1661 RMDEMUX_GUINT16_GET (data + offset + 24);
1662 if (numerator > G_MAXINT) {
1663 stream->framerate_numerator = (gint) (numerator >> 1);
1664 stream->framerate_denominator = 32768;
1666 stream->framerate_numerator = (gint) numerator;
1667 stream->framerate_denominator = 65536;
1671 GST_DEBUG_OBJECT (rmdemux,
1672 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1673 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1674 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1675 stream->rate, stream->framerate_numerator,
1676 stream->framerate_denominator, stream->subformat, stream->format,
1677 stream->extra_data_size);
1679 case GST_RMDEMUX_STREAM_AUDIO:{
1680 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1681 GST_INFO ("stream version = %u", stream->version);
1682 switch (stream->version) {
1684 stream->fourcc = GST_RM_AUD_14_4;
1685 stream->packet_size = 20;
1686 stream->rate = 8000;
1687 stream->n_channels = 1;
1688 stream->sample_width = 16;
1690 stream->leaf_size = 0;
1694 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1695 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1696 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1697 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1698 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1699 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1700 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1701 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1702 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1703 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1704 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1705 stream->extra_data_size);
1706 if (length - (offset + 73) >= stream->extra_data_size) {
1707 stream->extra_data = (guint8 *) data + offset + 73;
1709 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1710 stream->extra_data_size = 0;
1714 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1715 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1716 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1717 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1718 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1719 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1720 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1721 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1722 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1723 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1724 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1725 stream->extra_data_size);
1726 if (length - (offset + 78) >= stream->extra_data_size) {
1727 stream->extra_data = (guint8 *) data + offset + 78;
1729 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1730 stream->extra_data_size = 0;
1734 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1739 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1740 GST_DEBUG_OBJECT (rmdemux,
1741 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1742 stream->rate, stream->sample_width, stream->n_channels);
1746 case GST_RMDEMUX_STREAM_FILEINFO:
1750 /* Length of this section */
1751 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1752 RMDEMUX_GUINT32_GET (data + offset));
1755 /* Unknown : 00 00 00 00 */
1758 /* Number of variables that would follow (loop iterations) */
1759 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1762 while (element_nb) {
1763 /* Category Id : 00 00 00 XX 00 00 */
1767 offset += re_skip_pascal_string (data + offset);
1769 /* Variable Value Type */
1770 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1771 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1774 /* Variable Value */
1775 offset += re_skip_pascal_string (data + offset);
1781 case GST_RMDEMUX_STREAM_UNKNOWN:
1786 gst_rmdemux_add_stream (rmdemux, stream);
1790 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1795 n = RMDEMUX_GUINT32_GET (data);
1796 id = RMDEMUX_GUINT16_GET (data + 4);
1797 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1799 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1802 /* Point to the next index_stream */
1803 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1805 /* Return the length of the index */
1810 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1815 GstRMDemuxIndex *index;
1817 /* The number of index records */
1820 if (rmdemux->index_stream == NULL)
1823 /* don't parse the index a second time when operating pull-based and
1824 * reaching the end of the file */
1825 if (rmdemux->index_stream->index_length > 0) {
1826 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1830 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1831 rmdemux->index_stream->index = index;
1832 rmdemux->index_stream->index_length = n;
1834 for (i = 0; i < n; i++) {
1835 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1836 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1838 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1839 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1846 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1848 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1849 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1850 rmdemux->chunk_index = 0;
1851 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1852 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1856 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1860 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1862 GST_LOG_OBJECT (rmdemux, "tags: %" GST_PTR_FORMAT, tags);
1864 rmdemux->pending_tags =
1865 gst_tag_list_merge (rmdemux->pending_tags, tags, GST_TAG_MERGE_APPEND);
1868 static GstFlowReturn
1869 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1874 /* store the value */
1875 stream->last_flow = ret;
1877 /* if it's success we can return the value right away */
1878 if (ret == GST_FLOW_OK)
1881 /* any other error that is not-linked can be returned right
1883 if (ret != GST_FLOW_NOT_LINKED)
1886 for (cur = rmdemux->streams; cur; cur = cur->next) {
1887 GstRMDemuxStream *ostream = cur->data;
1889 ret = ostream->last_flow;
1890 /* some other return value (must be SUCCESS but we can return
1891 * other values as well) */
1892 if (ret != GST_FLOW_NOT_LINKED)
1895 /* if we get here, all other pads were unlinked and we return
1896 * NOT_LINKED then */
1902 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1903 GstRMDemuxStream * stream)
1905 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1908 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1909 stream->subpackets->len);
1910 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1911 g_ptr_array_set_size (stream->subpackets, 0);
1914 static GstFlowReturn
1915 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1917 GstFlowReturn ret = GST_FLOW_ERROR;
1920 guint packet_size = stream->packet_size;
1921 guint height = stream->subpackets->len;
1922 guint leaf_size = stream->leaf_size;
1925 g_assert (stream->height == height);
1927 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1930 outbuf = gst_buffer_new_and_alloc (height * packet_size);
1931 gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
1933 for (p = 0; p < height; ++p) {
1934 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1937 gst_buffer_map (b, &map, GST_MAP_READ);
1940 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1942 for (x = 0; x < packet_size / leaf_size; ++x) {
1945 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1947 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1948 memcpy (outmap.data + leaf_size * idx, map.data + leaf_size * x,
1951 gst_buffer_unmap (b, &map);
1953 gst_buffer_unmap (outbuf, &outmap);
1955 /* some decoders, such as realaudiodec, need to be fed in packet units */
1956 for (p = 0; p < height; ++p) {
1960 gst_buffer_copy_region (outbuf, GST_BUFFER_COPY_ALL, p * packet_size,
1963 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1964 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1966 if (stream->discont) {
1967 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1968 stream->discont = FALSE;
1971 ret = gst_pad_push (stream->pad, subbuf);
1972 if (ret != GST_FLOW_OK)
1976 gst_buffer_unref (outbuf);
1978 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1983 static GstFlowReturn
1984 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1985 GstRMDemuxStream * stream)
1989 buf = g_ptr_array_index (stream->subpackets, 0);
1990 g_ptr_array_index (stream->subpackets, 0) = NULL;
1991 g_ptr_array_set_size (stream->subpackets, 0);
1993 buf = gst_rm_utils_descramble_dnet_buffer (buf);
1995 if (stream->discont) {
1996 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
1997 stream->discont = FALSE;
1999 return gst_pad_push (stream->pad, buf);
2002 static GstFlowReturn
2003 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
2004 GstRMDemuxStream * stream)
2007 GstBuffer *buf, *outbuf;
2008 guint frames, index, i;
2010 GstClockTime timestamp;
2014 buf = g_ptr_array_index (stream->subpackets, 0);
2015 g_ptr_array_index (stream->subpackets, 0) = NULL;
2016 g_ptr_array_set_size (stream->subpackets, 0);
2018 gst_buffer_map (buf, &map, GST_MAP_READ);
2019 timestamp = GST_BUFFER_TIMESTAMP (buf);
2021 frames = (map.data[1] & 0xf0) >> 4;
2022 index = 2 * frames + 2;
2024 for (i = 0; i < frames; i++) {
2025 guint len = (map.data[i * 2 + 2] << 8) | map.data[i * 2 + 3];
2027 outbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, index, len);
2029 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2033 if (stream->discont) {
2034 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2035 stream->discont = FALSE;
2037 res = gst_pad_push (stream->pad, outbuf);
2038 if (res != GST_FLOW_OK)
2041 gst_buffer_unmap (buf, &map);
2042 gst_buffer_unref (buf);
2046 static GstFlowReturn
2047 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2048 GstRMDemuxStream * stream)
2053 guint packet_size = stream->packet_size;
2054 guint height = stream->subpackets->len;
2057 g_assert (stream->height == height);
2059 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2060 stream->leaf_size, height);
2062 outbuf = gst_buffer_new_and_alloc (height * packet_size);
2063 gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
2065 for (p = 0; p < height; ++p) {
2066 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2069 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
2071 gst_buffer_extract (b, 0, outmap.data + packet_size * p, packet_size);
2073 gst_buffer_unmap (outbuf, &outmap);
2075 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
2076 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
2078 if (stream->discont) {
2079 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2080 stream->discont = FALSE;
2083 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2085 ret = gst_pad_push (stream->pad, outbuf);
2087 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2092 static GstFlowReturn
2093 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2094 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2098 if (stream->subpackets == NULL)
2099 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2101 GST_LOG ("Got subpacket %u/%u, len=%" G_GSIZE_FORMAT ", key=%d",
2102 stream->subpackets->len + 1, stream->subpackets_needed,
2103 gst_buffer_get_size (buf), keyframe);
2105 if (keyframe && stream->subpackets->len > 0) {
2106 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2109 g_ptr_array_add (stream->subpackets, buf);
2111 if (stream->subpackets->len < stream->subpackets_needed)
2114 g_assert (stream->subpackets->len >= 1);
2116 switch (stream->fourcc) {
2117 case GST_RM_AUD_DNET:
2118 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2120 case GST_RM_AUD_COOK:
2121 case GST_RM_AUD_ATRC:
2122 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2124 case GST_RM_AUD_RAAC:
2125 case GST_RM_AUD_RACP:
2126 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2128 case GST_RM_AUD_SIPR:
2129 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2132 g_assert_not_reached ();
2139 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2140 guint8 * data, GstClockTime timestamp)
2144 GstClockTime ts = timestamp;
2146 if (timestamp == GST_CLOCK_TIME_NONE)
2149 /* only adjust when we have a stream with B frames */
2150 if (stream->format < 0x20200002)
2153 /* Fix timestamp. */
2154 switch (stream->fourcc) {
2155 case GST_RM_VDO_RV10:
2157 case GST_RM_VDO_RV20:
2160 * Bit 1- 2: frame type
2162 * Bit 10-22: sequence number
2165 frame_type = (data[0] >> 6) & 0x03;
2166 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2169 case GST_RM_VDO_RV30:
2173 * Bit 3: skip packet if 1
2174 * Bit 4- 5: frame type
2176 * Bit 13-25: sequence number
2179 frame_type = (data[0] >> 3) & 0x03;
2180 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2183 case GST_RM_VDO_RV40:
2186 * Bit 1: skip packet if 1
2187 * Bit 2- 3: frame type
2189 * Bit 14-26: sequence number
2192 frame_type = (data[0] >> 5) & 0x03;
2193 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2197 goto unknown_version;
2200 switch (frame_type) {
2204 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2206 if (stream->next_ts == -1)
2207 stream->next_ts = timestamp;
2209 timestamp = stream->next_ts;
2210 stream->last_ts = stream->next_ts;
2211 stream->next_ts = ts;
2212 stream->last_seq = stream->next_seq;
2213 stream->next_seq = seq;
2218 GST_LOG_OBJECT (rmdemux, "P frame");
2220 timestamp = stream->last_ts = stream->next_ts;
2221 if (seq < stream->next_seq)
2222 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2224 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2225 stream->last_seq = stream->next_seq;
2226 stream->next_seq = seq;
2231 GST_LOG_OBJECT (rmdemux, "B frame");
2233 if (seq < stream->last_seq) {
2235 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2237 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2242 goto unknown_frame_type;
2246 GST_LOG_OBJECT (rmdemux,
2247 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2248 GST_TIME_ARGS (timestamp));
2255 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2256 ("Unknown version: %i.", stream->version), (NULL));
2257 return GST_FLOW_ERROR;
2262 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2263 frame_type), (NULL));
2264 return GST_FLOW_ERROR;
2268 #define PARSE_NUMBER(data, size, number, label) \
2272 number = GST_READ_UINT16_BE (data); \
2273 if (!(number & 0xc000)) { \
2276 number = GST_READ_UINT32_BE (data); \
2286 static GstFlowReturn
2287 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2288 GstBuffer * in, guint offset, guint16 version,
2289 GstClockTime timestamp, gboolean key)
2296 gst_buffer_map (in, &map, GST_MAP_READ);
2298 data = map.data + offset;
2299 size = map.size - offset;
2301 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2302 * was previously for that given stream. */
2303 ret = stream->last_flow;
2309 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2310 guint fragment_size;
2311 GstBuffer *fragment;
2313 pkg_header = *data++;
2317 * bit 7: 1=last block in block chain
2318 * bit 6: 1=short header (only one block?)
2320 if ((pkg_header & 0xc0) == 0x40) {
2321 /* skip unknown byte */
2327 if ((pkg_header & 0x40) == 0) {
2328 pkg_subseq = (*data++) & 0x7f;
2335 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2338 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2342 goto not_enough_data;
2344 pkg_seqnum = *data++;
2348 GST_DEBUG_OBJECT (rmdemux,
2349 "seq %d, subseq %d, offset %d, length %d, size %" G_GSIZE_FORMAT
2350 ", header %02x", pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size,
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 */
2366 gst_buffer_copy_region (in, GST_BUFFER_COPY_ALL, data - map.data,
2369 if (pkg_subseq == 1) {
2370 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2371 gst_adapter_clear (stream->adapter);
2372 stream->frag_current = 0;
2373 stream->frag_count = 0;
2374 stream->frag_length = pkg_length;
2375 } else if (pkg_subseq == 0) {
2376 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2377 stream->frag_current = 0;
2378 stream->frag_count = 0;
2379 stream->frag_length = fragment_size;
2382 /* put fragment in adapter */
2383 gst_adapter_push (stream->adapter, fragment);
2384 stream->frag_offset[stream->frag_count] = stream->frag_current;
2385 stream->frag_current += fragment_size;
2386 stream->frag_count++;
2388 if (stream->frag_count > MAX_FRAGS)
2389 goto too_many_fragments;
2391 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2392 stream->frag_current, stream->frag_length);
2394 /* flush fragment when complete */
2395 if (stream->frag_current >= stream->frag_length) {
2402 /* calculate header size, which is:
2403 * 1 byte for the number of fragments - 1
2404 * for each fragment:
2405 * 4 bytes 0x00000001 little endian
2406 * 4 bytes fragment offset
2408 * This is also the matroska header for realvideo, the decoder needs the
2409 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2410 * in front of the data.
2412 header_size = 1 + (8 * (stream->frag_count));
2414 GST_DEBUG_OBJECT (rmdemux,
2415 "fragmented completed. count %d, header_size %u", stream->frag_count,
2418 avail = gst_adapter_available (stream->adapter);
2420 out = gst_buffer_new_and_alloc (header_size + avail);
2421 gst_buffer_map (out, &outmap, GST_MAP_WRITE);
2422 outdata = outmap.data;
2425 *outdata++ = stream->frag_count - 1;
2426 for (i = 0; i < stream->frag_count; i++) {
2427 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2429 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2433 /* copy packet data after the header now */
2434 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2435 gst_adapter_flush (stream->adapter, avail);
2437 stream->frag_current = 0;
2438 stream->frag_count = 0;
2439 stream->frag_length = 0;
2441 if (timestamp != -1) {
2442 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2443 timestamp -= rmdemux->first_ts;
2447 if (rmdemux->base_ts != -1)
2448 timestamp += rmdemux->base_ts;
2451 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2453 gst_buffer_unmap (out, &outmap);
2455 GST_BUFFER_TIMESTAMP (out) = timestamp;
2457 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2458 GST_TIME_ARGS (timestamp));
2460 if (stream->discont) {
2461 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2462 stream->discont = FALSE;
2466 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DELTA_UNIT);
2469 ret = gst_pad_push (stream->pad, out);
2470 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2471 if (ret != GST_FLOW_OK)
2474 timestamp = GST_CLOCK_TIME_NONE;
2476 data += fragment_size;
2477 size -= fragment_size;
2479 GST_DEBUG_OBJECT (rmdemux, "%" G_GSIZE_FORMAT " bytes left", size);
2482 gst_buffer_unmap (in, &map);
2483 gst_buffer_unref (in);
2490 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2497 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2498 ("Got more fragments (%u) than can be handled (%u)",
2499 stream->frag_count, MAX_FRAGS), (NULL));
2500 ret = GST_FLOW_ERROR;
2505 static GstFlowReturn
2506 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2507 GstBuffer * in, guint offset, guint16 version,
2508 GstClockTime timestamp, gboolean key)
2513 buffer = gst_buffer_copy_region (in, GST_BUFFER_COPY_MEMORY, offset, -1);
2515 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2516 timestamp -= rmdemux->first_ts;
2520 if (rmdemux->base_ts != -1)
2521 timestamp += rmdemux->base_ts;
2523 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2525 if (stream->needs_descrambling) {
2526 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2527 GST_TIME_ARGS (timestamp));
2528 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2530 GST_LOG_OBJECT (rmdemux,
2531 "Pushing buffer of size %" G_GSIZE_FORMAT ", timestamp %"
2532 GST_TIME_FORMAT "to pad %s", gst_buffer_get_size (buffer),
2533 GST_TIME_ARGS (timestamp), GST_PAD_NAME (stream->pad));
2535 if (stream->discont) {
2536 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2537 stream->discont = FALSE;
2539 ret = gst_pad_push (stream->pad, buffer);
2542 gst_buffer_unref (in);
2547 static GstFlowReturn
2548 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2551 GstRMDemuxStream *stream;
2553 GstFlowReturn cret, ret;
2554 GstClockTime timestamp;
2561 gst_buffer_map (in, &map, GST_MAP_READ);
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 rmdemux->segment.position = timestamp;
2578 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2579 GST_TIME_FORMAT ", size %" G_GSIZE_FORMAT ", 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 offset = data - map.data;
2604 gst_buffer_unmap (in, &map);
2606 key = (flags & 0x02) != 0;
2607 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2609 if (rmdemux->need_newsegment) {
2612 event = gst_event_new_segment (&rmdemux->segment);
2614 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2615 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2617 gst_rmdemux_send_event (rmdemux, event);
2618 rmdemux->need_newsegment = FALSE;
2620 if (rmdemux->pending_tags != NULL) {
2621 gst_rmdemux_send_event (rmdemux,
2622 gst_event_new_tag ("GstDemuxer", rmdemux->pending_tags));
2623 rmdemux->pending_tags = NULL;
2627 if (stream->pending_tags != NULL) {
2628 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2629 gst_pad_push_event (stream->pad, gst_event_new_tag ("GstDemuxer",
2630 stream->pending_tags));
2631 stream->pending_tags = NULL;
2634 if ((rmdemux->offset + size) <= stream->seek_offset) {
2635 GST_DEBUG_OBJECT (rmdemux,
2636 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%"
2637 G_GSIZE_FORMAT, stream->id, stream->seek_offset, rmdemux->offset, size);
2639 gst_buffer_unref (in);
2643 /* do special headers */
2644 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2646 gst_rmdemux_parse_video_packet (rmdemux, stream, in, offset,
2647 version, timestamp, key);
2648 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2650 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, offset,
2651 version, timestamp, key);
2653 gst_buffer_unref (in);
2657 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2665 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2667 gst_buffer_unmap (in, &map);
2668 gst_buffer_unref (in);
2674 gst_rmdemux_plugin_init (GstPlugin * plugin)
2676 return gst_element_register (plugin, "rmdemux",
2677 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);