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_unref (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_unref (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_with_flags (query,
757 GST_PAD_MODE_PULL, GST_SCHEDULING_FLAG_SEEKABLE);
758 gst_query_unref (query);
763 GST_DEBUG_OBJECT (sinkpad, "activating pull");
764 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
768 GST_DEBUG_OBJECT (sinkpad, "activating push");
769 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
774 gst_rmdemux_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
775 GstPadMode mode, gboolean active)
780 demux = GST_RMDEMUX (parent);
783 case GST_PAD_MODE_PUSH:
784 demux->seekable = FALSE;
787 case GST_PAD_MODE_PULL:
789 demux->seekable = TRUE;
791 demux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
792 demux->data_offset = G_MAXUINT;
794 gst_pad_start_task (sinkpad, (GstTaskFunction) gst_rmdemux_loop,
797 res = gst_pad_stop_task (sinkpad);
808 /* random access mode - just pass over to our chain function */
810 gst_rmdemux_loop (GstPad * pad)
814 GstFlowReturn ret = GST_FLOW_OK;
817 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
819 GST_LOG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
820 rmdemux->loop_state, rmdemux->offset);
822 switch (rmdemux->state) {
823 case RMDEMUX_STATE_HEADER:
826 case RMDEMUX_STATE_HEADER_DATA:
829 case RMDEMUX_STATE_DATA_PACKET:
830 size = rmdemux->avg_packet_size;
832 case RMDEMUX_STATE_EOS:
833 GST_LOG_OBJECT (rmdemux, "At EOS, pausing task");
837 GST_LOG_OBJECT (rmdemux, "Default: requires %d bytes (state is %d)",
838 (int) rmdemux->size, rmdemux->state);
839 size = rmdemux->size;
843 ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
844 if (ret != GST_FLOW_OK) {
845 if (rmdemux->offset == rmdemux->index_offset) {
846 /* The index isn't available so forget about it */
847 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
848 rmdemux->offset = rmdemux->data_offset;
849 GST_OBJECT_LOCK (rmdemux);
850 rmdemux->running = TRUE;
851 rmdemux->seekable = FALSE;
852 GST_OBJECT_UNLOCK (rmdemux);
855 GST_DEBUG_OBJECT (rmdemux, "Unable to pull %d bytes at offset 0x%08x "
856 "(pull_range returned flow %s, state is %d)", (gint) size,
857 rmdemux->offset, gst_flow_get_name (ret), GST_STATE (rmdemux));
862 size = gst_buffer_get_size (buffer);
864 /* Defer to the chain function */
865 ret = gst_rmdemux_chain (pad, GST_OBJECT_CAST (rmdemux), buffer);
866 if (ret != GST_FLOW_OK) {
867 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
872 rmdemux->offset += size;
874 switch (rmdemux->loop_state) {
875 case RMDEMUX_LOOP_STATE_HEADER:
876 if (rmdemux->offset >= rmdemux->data_offset) {
877 /* It's the end of the header */
878 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
879 rmdemux->offset = rmdemux->index_offset;
882 case RMDEMUX_LOOP_STATE_INDEX:
883 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
884 if (rmdemux->index_offset == 0) {
885 /* We've read the last index */
886 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
887 rmdemux->offset = rmdemux->data_offset;
888 GST_OBJECT_LOCK (rmdemux);
889 rmdemux->running = TRUE;
890 GST_OBJECT_UNLOCK (rmdemux);
892 /* Get the next index */
893 rmdemux->offset = rmdemux->index_offset;
897 case RMDEMUX_LOOP_STATE_DATA:
906 const gchar *reason = gst_flow_get_name (ret);
908 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
909 rmdemux->segment_running = FALSE;
910 gst_pad_pause_task (rmdemux->sinkpad);
912 if (ret == GST_FLOW_EOS) {
913 /* perform EOS logic */
914 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
917 /* for segment playback we need to post when (in stream time)
918 * we stopped, this is either stop (when set) or the duration. */
919 if ((stop = rmdemux->segment.stop) == -1)
920 stop = rmdemux->segment.duration;
922 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
923 gst_element_post_message (GST_ELEMENT (rmdemux),
924 gst_message_new_segment_done (GST_OBJECT (rmdemux),
925 GST_FORMAT_TIME, stop));
926 gst_rmdemux_send_event (rmdemux,
927 gst_event_new_segment_done (GST_FORMAT_TIME, stop));
929 /* normal playback, send EOS to all linked pads */
930 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
931 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
933 } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS) {
934 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
935 (NULL), ("stream stopped, reason %s", reason));
936 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
943 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
947 for (i = 0; i < 4; i++) {
948 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
956 gst_rmdemux_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
958 GstFlowReturn ret = GST_FLOW_OK;
963 GstRMDemux *rmdemux = GST_RMDEMUX (parent);
965 if (rmdemux->base_ts == -1) {
966 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
967 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
968 GST_TIME_ARGS (rmdemux->base_ts));
971 gst_adapter_push (rmdemux->adapter, buffer);
973 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %" G_GSIZE_FORMAT,
974 gst_buffer_get_size (buffer));
977 avail = gst_adapter_available (rmdemux->adapter);
979 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
980 switch (rmdemux->state) {
981 case RMDEMUX_STATE_HEADER:
983 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
986 data = gst_adapter_map (rmdemux->adapter, HEADER_SIZE);
988 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
989 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
990 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
992 /* Sanity-check. We assume that the FOURCC is printable ASCII */
993 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
994 /* Failed. Remain in HEADER state, try again... We flush only
995 * the actual FOURCC, not the entire header, because we could
996 * need to resync anywhere at all... really, this should never
998 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
1000 gst_adapter_unmap (rmdemux->adapter);
1001 gst_adapter_flush (rmdemux->adapter, 4);
1006 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1008 " size=%08x object_version=%d",
1009 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1010 rmdemux->object_version);
1012 gst_adapter_unmap (rmdemux->adapter);
1013 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1015 switch (rmdemux->object_id) {
1016 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1017 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1019 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1020 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1022 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1023 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1025 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1026 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1028 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1029 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1031 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1032 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1035 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1040 case RMDEMUX_STATE_HEADER_UNKNOWN:
1042 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1045 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1046 GST_FOURCC_ARGS (rmdemux->object_id));
1048 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1049 rmdemux->state = RMDEMUX_STATE_HEADER;
1052 case RMDEMUX_STATE_HEADER_RMF:
1054 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1057 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1058 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1059 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1060 gst_adapter_unmap (rmdemux->adapter);
1061 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1063 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1065 rmdemux->state = RMDEMUX_STATE_HEADER;
1068 case RMDEMUX_STATE_HEADER_PROP:
1070 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1073 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1074 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1075 gst_adapter_unmap (rmdemux->adapter);
1076 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1078 rmdemux->state = RMDEMUX_STATE_HEADER;
1081 case RMDEMUX_STATE_HEADER_MDPR:
1083 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1086 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1087 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1088 gst_adapter_unmap (rmdemux->adapter);
1089 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1091 rmdemux->state = RMDEMUX_STATE_HEADER;
1094 case RMDEMUX_STATE_HEADER_CONT:
1096 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1099 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1100 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1101 gst_adapter_unmap (rmdemux->adapter);
1102 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1104 rmdemux->state = RMDEMUX_STATE_HEADER;
1107 case RMDEMUX_STATE_HEADER_DATA:
1109 /* If we haven't already done so then signal there are no more pads */
1110 if (!rmdemux->have_pads) {
1111 GST_LOG_OBJECT (rmdemux, "no more pads");
1112 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1113 rmdemux->have_pads = TRUE;
1116 /* The actual header is only 8 bytes */
1117 rmdemux->size = DATA_SIZE;
1118 GST_LOG_OBJECT (rmdemux, "data available %" G_GSIZE_FORMAT,
1119 gst_adapter_available (rmdemux->adapter));
1120 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1123 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1124 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1125 gst_adapter_unmap (rmdemux->adapter);
1126 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1128 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1131 case RMDEMUX_STATE_HEADER_INDX:
1133 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1136 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1137 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1138 /* Only flush the header */
1139 gst_adapter_unmap (rmdemux->adapter);
1140 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1142 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1145 case RMDEMUX_STATE_INDX_DATA:
1147 /* There's not always an data to get... */
1148 if (rmdemux->size > 0) {
1149 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1152 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1153 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1154 gst_adapter_unmap (rmdemux->adapter);
1155 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1158 rmdemux->state = RMDEMUX_STATE_HEADER;
1161 case RMDEMUX_STATE_DATA_PACKET:
1165 if (gst_adapter_available (rmdemux->adapter) < 2)
1168 gst_adapter_copy (rmdemux->adapter, header, 0, 2);
1169 version = RMDEMUX_GUINT16_GET (header);
1170 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1172 if (version == 0 || version == 1) {
1175 if (gst_adapter_available (rmdemux->adapter) < 4)
1178 gst_adapter_copy (rmdemux->adapter, header, 0, 4);
1180 length = RMDEMUX_GUINT16_GET (header + 2);
1181 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1184 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1185 /* Invalid, just drop it */
1186 gst_adapter_flush (rmdemux->adapter, 4);
1190 avail = gst_adapter_available (rmdemux->adapter);
1194 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1197 /* flush version and length */
1198 gst_adapter_flush (rmdemux->adapter, 4);
1201 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1203 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1204 rmdemux->chunk_index++;
1207 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1208 rmdemux->state = RMDEMUX_STATE_HEADER;
1211 gst_adapter_flush (rmdemux->adapter, 2);
1213 if (rmdemux->data_offset == 0) {
1214 GST_LOG_OBJECT (rmdemux,
1215 "No further data, internal demux state EOS");
1216 rmdemux->state = RMDEMUX_STATE_EOS;
1218 rmdemux->state = RMDEMUX_STATE_HEADER;
1222 case RMDEMUX_STATE_EOS:
1223 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1226 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1235 static GstRMDemuxStream *
1236 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1240 for (cur = rmdemux->streams; cur; cur = cur->next) {
1241 GstRMDemuxStream *stream = cur->data;
1243 if (stream->id == id) {
1252 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1256 for (cur = rmdemux->streams; cur; cur = cur->next) {
1257 GstRMDemuxStream *stream = cur->data;
1259 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1260 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1262 switch (GST_EVENT_TYPE (event)) {
1263 case GST_EVENT_FLUSH_STOP:
1264 stream->last_ts = -1;
1265 stream->next_ts = -1;
1266 stream->last_seq = -1;
1267 stream->next_seq = -1;
1268 stream->last_flow = GST_FLOW_OK;
1273 gst_event_ref (event);
1274 gst_pad_push_event (stream->pad, event);
1276 gst_event_unref (event);
1280 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1282 GstCaps *stream_caps = NULL;
1283 const gchar *codec_tag = NULL;
1284 gchar *codec_name = NULL;
1288 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1289 char *name = g_strdup_printf ("video_%u", rmdemux->n_video_streams);
1292 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1295 codec_tag = GST_TAG_VIDEO_CODEC;
1297 switch (stream->fourcc) {
1298 case GST_RM_VDO_RV10:
1301 case GST_RM_VDO_RV20:
1304 case GST_RM_VDO_RV30:
1307 case GST_RM_VDO_RV40:
1311 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1312 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1313 GST_WARNING_OBJECT (rmdemux,
1314 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1315 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1320 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1322 "format", G_TYPE_INT,
1323 (int) stream->format,
1324 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1328 gst_caps_set_simple (stream_caps,
1329 "width", G_TYPE_INT, stream->width,
1330 "height", G_TYPE_INT, stream->height,
1331 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1332 stream->framerate_denominator, NULL);
1334 rmdemux->n_video_streams++;
1336 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1337 char *name = g_strdup_printf ("audio_%u", rmdemux->n_audio_streams);
1340 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1341 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1344 codec_tag = GST_TAG_AUDIO_CODEC;
1346 switch (stream->fourcc) {
1347 /* Older RealAudio Codecs */
1348 case GST_RM_AUD_14_4:
1352 case GST_RM_AUD_28_8:
1356 /* DolbyNet (Dolby AC3, low bitrate) */
1357 case GST_RM_AUD_DNET:
1359 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1360 (int) stream->rate, NULL);
1361 stream->needs_descrambling = TRUE;
1362 stream->subpackets_needed = 1;
1363 stream->subpackets = NULL;
1367 case GST_RM_AUD_RAAC:
1368 case GST_RM_AUD_RACP:
1370 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1371 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1372 if (stream->extra_data_size > 0) {
1373 /* strip off an unknown byte in the extra data */
1374 stream->extra_data_size--;
1375 stream->extra_data++;
1377 stream->needs_descrambling = TRUE;
1378 stream->subpackets_needed = 1;
1379 stream->subpackets = NULL;
1383 case GST_RM_AUD_ATRC:
1384 stream_caps = gst_caps_new_empty_simple ("audio/x-vnd.sony.atrac3");
1385 stream->needs_descrambling = TRUE;
1386 stream->subpackets_needed = stream->height;
1387 stream->subpackets = NULL;
1390 /* RealAudio G2 audio */
1391 case GST_RM_AUD_COOK:
1393 stream->needs_descrambling = TRUE;
1394 stream->subpackets_needed = stream->height;
1395 stream->subpackets = NULL;
1398 /* RALF is lossless */
1399 case GST_RM_AUD_RALF:
1400 GST_DEBUG_OBJECT (rmdemux, "RALF");
1401 stream_caps = gst_caps_new_empty_simple ("audio/x-ralf-mpeg4-generic");
1404 case GST_RM_AUD_SIPR:
1406 if (stream->flavor > 3) {
1407 GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
1413 GST_DEBUG_OBJECT (rmdemux, "SIPR");
1414 stream_caps = gst_caps_new_empty_simple ("audio/x-sipro");
1415 stream->needs_descrambling = TRUE;
1416 stream->subpackets_needed = stream->height;
1417 stream->subpackets = NULL;
1418 stream->leaf_size = sipr_subpk_size[stream->flavor];
1423 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1424 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1425 GST_WARNING_OBJECT (rmdemux,
1426 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1427 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1433 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1434 (int) version, NULL);
1438 gst_caps_set_simple (stream_caps,
1439 "flavor", G_TYPE_INT, (int) stream->flavor,
1440 "rate", G_TYPE_INT, (int) stream->rate,
1441 "channels", G_TYPE_INT, (int) stream->n_channels,
1442 "width", G_TYPE_INT, (int) stream->sample_width,
1443 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1444 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1445 "bitrate", G_TYPE_INT, (int) stream->bitrate,
1446 "height", G_TYPE_INT, (int) stream->height, NULL);
1448 rmdemux->n_audio_streams++;
1450 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1456 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1457 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1458 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1459 g_slist_length (rmdemux->streams));
1461 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1464 if (stream->pad && stream_caps) {
1466 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1467 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1469 /* add codec_data if there is any */
1470 if (stream->extra_data_size > 0) {
1473 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1474 gst_buffer_fill (buffer, 0, stream->extra_data, stream->extra_data_size);
1476 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1479 gst_buffer_unref (buffer);
1482 gst_pad_use_fixed_caps (stream->pad);
1484 gst_pad_set_event_function (stream->pad,
1485 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1486 gst_pad_set_query_function (stream->pad,
1487 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1489 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1490 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1491 gst_pad_set_active (stream->pad, TRUE);
1494 gst_pad_create_stream_id_printf (stream->pad,
1495 GST_ELEMENT_CAST (rmdemux), "%u", stream->id);
1496 gst_pad_push_event (stream->pad, gst_event_new_stream_start (stream_id));
1499 gst_pad_set_caps (stream->pad, stream_caps);
1501 codec_name = gst_pb_utils_get_codec_description (stream_caps);
1503 /* save for later, we must send the tags after the newsegment event */
1504 if (codec_tag != NULL && codec_name != NULL) {
1505 if (stream->pending_tags == NULL)
1506 stream->pending_tags = gst_tag_list_new_empty ();
1507 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1508 codec_tag, codec_name, NULL);
1509 g_free (codec_name);
1511 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1517 gst_caps_unref (stream_caps);
1521 re_skip_pascal_string (const guint8 * ptr)
1531 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1533 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1534 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1538 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1540 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1541 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1542 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1543 RMDEMUX_GUINT32_GET (data + 8));
1544 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1545 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1546 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1547 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1549 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1550 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1552 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1553 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1554 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1555 rmdemux->index_offset);
1556 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1557 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1558 rmdemux->data_offset);
1559 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1560 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1564 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1566 GstRMDemuxStream *stream;
1567 char *stream1_type_string;
1568 char *stream2_type_string;
1572 guint32 max_bitrate;
1573 guint32 avg_bitrate;
1575 stream = g_new0 (GstRMDemuxStream, 1);
1577 stream->id = RMDEMUX_GUINT16_GET (data);
1578 stream->index = NULL;
1579 stream->seek_offset = 0;
1580 stream->last_ts = -1;
1581 stream->next_ts = -1;
1582 stream->last_flow = GST_FLOW_OK;
1583 stream->discont = TRUE;
1584 stream->adapter = gst_adapter_new ();
1585 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1587 /* parse the bitrates */
1588 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1589 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1590 stream->bitrate = avg_bitrate;
1591 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1592 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1593 if (max_bitrate != 0) {
1594 if (stream->pending_tags == NULL)
1595 stream->pending_tags = gst_tag_list_new_empty ();
1596 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1597 GST_TAG_MAXIMUM_BITRATE, max_bitrate, NULL);
1599 if (avg_bitrate != 0) {
1600 if (stream->pending_tags == NULL)
1601 stream->pending_tags = gst_tag_list_new_empty ();
1602 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1603 GST_TAG_BITRATE, avg_bitrate, NULL);
1607 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1608 length - offset, &str_len);
1610 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1611 length - offset, &str_len);
1614 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1616 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1617 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1619 * so, we should not rely on it to know which stream type it is
1622 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1623 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1625 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1626 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1627 } else if (strcmp (stream2_type_string,
1628 "video/x-pn-multirate-realvideo") == 0) {
1629 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1630 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1631 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1632 } else if (strcmp (stream2_type_string,
1633 "audio/x-pn-multirate-realaudio") == 0) {
1634 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1635 } else if (strcmp (stream2_type_string,
1636 "audio/x-pn-multirate-realaudio-live") == 0) {
1637 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1638 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1639 /* Another audio type found in the real testsuite */
1640 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1641 } else if (strcmp (stream1_type_string, "") == 0 &&
1642 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1643 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1645 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1646 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1647 stream1_type_string, stream2_type_string);
1649 g_free (stream1_type_string);
1650 g_free (stream2_type_string);
1654 stream->subtype = stream_type;
1655 switch (stream_type) {
1657 case GST_RMDEMUX_STREAM_VIDEO:
1658 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1659 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1660 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1661 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1662 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1663 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1664 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1665 stream->extra_data_size = length - (offset + 26);
1666 stream->extra_data = (guint8 *) data + offset + 26;
1667 /* Natural way to represent framerates here requires unsigned 32 bit
1668 * numerator, which we don't have. For the nasty case, approximate...
1671 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1672 RMDEMUX_GUINT16_GET (data + offset + 24);
1673 if (numerator > G_MAXINT) {
1674 stream->framerate_numerator = (gint) (numerator >> 1);
1675 stream->framerate_denominator = 32768;
1677 stream->framerate_numerator = (gint) numerator;
1678 stream->framerate_denominator = 65536;
1682 GST_DEBUG_OBJECT (rmdemux,
1683 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1684 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1685 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1686 stream->rate, stream->framerate_numerator,
1687 stream->framerate_denominator, stream->subformat, stream->format,
1688 stream->extra_data_size);
1690 case GST_RMDEMUX_STREAM_AUDIO:{
1691 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1692 GST_INFO ("stream version = %u", stream->version);
1693 switch (stream->version) {
1695 stream->fourcc = GST_RM_AUD_14_4;
1696 stream->packet_size = 20;
1697 stream->rate = 8000;
1698 stream->n_channels = 1;
1699 stream->sample_width = 16;
1701 stream->leaf_size = 0;
1705 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1706 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1707 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1708 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1709 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1710 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1711 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1712 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1713 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1714 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1715 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1716 stream->extra_data_size);
1717 if (length - (offset + 73) >= stream->extra_data_size) {
1718 stream->extra_data = (guint8 *) data + offset + 73;
1720 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1721 stream->extra_data_size = 0;
1725 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1726 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1727 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1728 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1729 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1730 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1731 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1732 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1733 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1734 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1735 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1736 stream->extra_data_size);
1737 if (length - (offset + 78) >= stream->extra_data_size) {
1738 stream->extra_data = (guint8 *) data + offset + 78;
1740 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1741 stream->extra_data_size = 0;
1745 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1750 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1751 GST_DEBUG_OBJECT (rmdemux,
1752 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1753 stream->rate, stream->sample_width, stream->n_channels);
1757 case GST_RMDEMUX_STREAM_FILEINFO:
1761 /* Length of this section */
1762 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1763 RMDEMUX_GUINT32_GET (data + offset));
1766 /* Unknown : 00 00 00 00 */
1769 /* Number of variables that would follow (loop iterations) */
1770 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1773 while (element_nb) {
1774 /* Category Id : 00 00 00 XX 00 00 */
1778 offset += re_skip_pascal_string (data + offset);
1780 /* Variable Value Type */
1781 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1782 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1785 /* Variable Value */
1786 offset += re_skip_pascal_string (data + offset);
1792 case GST_RMDEMUX_STREAM_UNKNOWN:
1797 gst_rmdemux_add_stream (rmdemux, stream);
1801 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1806 n = RMDEMUX_GUINT32_GET (data);
1807 id = RMDEMUX_GUINT16_GET (data + 4);
1808 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1810 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1813 /* Point to the next index_stream */
1814 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1816 /* Return the length of the index */
1821 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1826 GstRMDemuxIndex *index;
1828 /* The number of index records */
1831 if (rmdemux->index_stream == NULL)
1834 /* don't parse the index a second time when operating pull-based and
1835 * reaching the end of the file */
1836 if (rmdemux->index_stream->index_length > 0) {
1837 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1841 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1842 rmdemux->index_stream->index = index;
1843 rmdemux->index_stream->index_length = n;
1845 for (i = 0; i < n; i++) {
1846 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1847 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1849 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1850 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1857 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1859 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1860 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1861 rmdemux->chunk_index = 0;
1862 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1863 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1867 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1871 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1873 GST_LOG_OBJECT (rmdemux, "tags: %" GST_PTR_FORMAT, tags);
1875 rmdemux->pending_tags =
1876 gst_tag_list_merge (rmdemux->pending_tags, tags, GST_TAG_MERGE_APPEND);
1879 static GstFlowReturn
1880 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1885 /* store the value */
1886 stream->last_flow = ret;
1888 /* if it's success we can return the value right away */
1889 if (ret == GST_FLOW_OK)
1892 /* any other error that is not-linked can be returned right
1894 if (ret != GST_FLOW_NOT_LINKED)
1897 for (cur = rmdemux->streams; cur; cur = cur->next) {
1898 GstRMDemuxStream *ostream = cur->data;
1900 ret = ostream->last_flow;
1901 /* some other return value (must be SUCCESS but we can return
1902 * other values as well) */
1903 if (ret != GST_FLOW_NOT_LINKED)
1906 /* if we get here, all other pads were unlinked and we return
1907 * NOT_LINKED then */
1913 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1914 GstRMDemuxStream * stream)
1916 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1919 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1920 stream->subpackets->len);
1921 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1922 g_ptr_array_set_size (stream->subpackets, 0);
1925 static GstFlowReturn
1926 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1928 GstFlowReturn ret = GST_FLOW_ERROR;
1931 guint packet_size = stream->packet_size;
1932 guint height = stream->subpackets->len;
1933 guint leaf_size = stream->leaf_size;
1936 g_assert (stream->height == height);
1938 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1941 outbuf = gst_buffer_new_and_alloc (height * packet_size);
1942 gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
1944 for (p = 0; p < height; ++p) {
1945 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1948 gst_buffer_map (b, &map, GST_MAP_READ);
1951 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1953 for (x = 0; x < packet_size / leaf_size; ++x) {
1956 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1958 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1959 memcpy (outmap.data + leaf_size * idx, map.data + leaf_size * x,
1962 gst_buffer_unmap (b, &map);
1964 gst_buffer_unmap (outbuf, &outmap);
1966 /* some decoders, such as realaudiodec, need to be fed in packet units */
1967 for (p = 0; p < height; ++p) {
1971 gst_buffer_copy_region (outbuf, GST_BUFFER_COPY_ALL, p * packet_size,
1974 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1975 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1977 if (stream->discont) {
1978 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1979 stream->discont = FALSE;
1982 ret = gst_pad_push (stream->pad, subbuf);
1983 if (ret != GST_FLOW_OK)
1987 gst_buffer_unref (outbuf);
1989 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1994 static GstFlowReturn
1995 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1996 GstRMDemuxStream * stream)
2000 buf = g_ptr_array_index (stream->subpackets, 0);
2001 g_ptr_array_index (stream->subpackets, 0) = NULL;
2002 g_ptr_array_set_size (stream->subpackets, 0);
2004 buf = gst_rm_utils_descramble_dnet_buffer (buf);
2006 if (stream->discont) {
2007 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2008 stream->discont = FALSE;
2010 return gst_pad_push (stream->pad, buf);
2013 static GstFlowReturn
2014 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
2015 GstRMDemuxStream * stream)
2018 GstBuffer *buf, *outbuf;
2019 guint frames, index, i;
2021 GstClockTime timestamp;
2025 buf = g_ptr_array_index (stream->subpackets, 0);
2026 g_ptr_array_index (stream->subpackets, 0) = NULL;
2027 g_ptr_array_set_size (stream->subpackets, 0);
2029 gst_buffer_map (buf, &map, GST_MAP_READ);
2030 timestamp = GST_BUFFER_TIMESTAMP (buf);
2032 frames = (map.data[1] & 0xf0) >> 4;
2033 index = 2 * frames + 2;
2035 for (i = 0; i < frames; i++) {
2036 guint len = (map.data[i * 2 + 2] << 8) | map.data[i * 2 + 3];
2038 outbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, index, len);
2040 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2044 if (stream->discont) {
2045 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2046 stream->discont = FALSE;
2048 res = gst_pad_push (stream->pad, outbuf);
2049 if (res != GST_FLOW_OK)
2052 gst_buffer_unmap (buf, &map);
2053 gst_buffer_unref (buf);
2057 static GstFlowReturn
2058 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2059 GstRMDemuxStream * stream)
2064 guint packet_size = stream->packet_size;
2065 guint height = stream->subpackets->len;
2068 g_assert (stream->height == height);
2070 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2071 stream->leaf_size, height);
2073 outbuf = gst_buffer_new_and_alloc (height * packet_size);
2074 gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
2076 for (p = 0; p < height; ++p) {
2077 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2080 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
2082 gst_buffer_extract (b, 0, outmap.data + packet_size * p, packet_size);
2084 gst_buffer_unmap (outbuf, &outmap);
2086 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
2087 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
2089 if (stream->discont) {
2090 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2091 stream->discont = FALSE;
2094 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2096 ret = gst_pad_push (stream->pad, outbuf);
2098 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2103 static GstFlowReturn
2104 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2105 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2109 if (stream->subpackets == NULL)
2110 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2112 GST_LOG ("Got subpacket %u/%u, len=%" G_GSIZE_FORMAT ", key=%d",
2113 stream->subpackets->len + 1, stream->subpackets_needed,
2114 gst_buffer_get_size (buf), keyframe);
2116 if (keyframe && stream->subpackets->len > 0) {
2117 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2120 g_ptr_array_add (stream->subpackets, buf);
2122 if (stream->subpackets->len < stream->subpackets_needed)
2125 g_assert (stream->subpackets->len >= 1);
2127 switch (stream->fourcc) {
2128 case GST_RM_AUD_DNET:
2129 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2131 case GST_RM_AUD_COOK:
2132 case GST_RM_AUD_ATRC:
2133 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2135 case GST_RM_AUD_RAAC:
2136 case GST_RM_AUD_RACP:
2137 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2139 case GST_RM_AUD_SIPR:
2140 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2143 ret = GST_FLOW_ERROR;
2144 g_assert_not_reached ();
2151 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2152 guint8 * data, GstClockTime timestamp)
2156 GstClockTime ts = timestamp;
2158 if (timestamp == GST_CLOCK_TIME_NONE)
2161 /* only adjust when we have a stream with B frames */
2162 if (stream->format < 0x20200002)
2165 /* Fix timestamp. */
2166 switch (stream->fourcc) {
2167 case GST_RM_VDO_RV10:
2169 case GST_RM_VDO_RV20:
2172 * Bit 1- 2: frame type
2174 * Bit 10-22: sequence number
2177 frame_type = (data[0] >> 6) & 0x03;
2178 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2181 case GST_RM_VDO_RV30:
2185 * Bit 3: skip packet if 1
2186 * Bit 4- 5: frame type
2188 * Bit 13-25: sequence number
2191 frame_type = (data[0] >> 3) & 0x03;
2192 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2195 case GST_RM_VDO_RV40:
2198 * Bit 1: skip packet if 1
2199 * Bit 2- 3: frame type
2201 * Bit 14-26: sequence number
2204 frame_type = (data[0] >> 5) & 0x03;
2205 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2209 goto unknown_version;
2212 switch (frame_type) {
2216 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2218 if (stream->next_ts == -1)
2219 stream->next_ts = timestamp;
2221 timestamp = stream->next_ts;
2222 stream->last_ts = stream->next_ts;
2223 stream->next_ts = ts;
2224 stream->last_seq = stream->next_seq;
2225 stream->next_seq = seq;
2230 GST_LOG_OBJECT (rmdemux, "P frame");
2232 timestamp = stream->last_ts = stream->next_ts;
2233 if (seq < stream->next_seq)
2234 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2236 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2237 stream->last_seq = stream->next_seq;
2238 stream->next_seq = seq;
2243 GST_LOG_OBJECT (rmdemux, "B frame");
2245 if (seq < stream->last_seq) {
2247 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2249 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2254 goto unknown_frame_type;
2258 GST_LOG_OBJECT (rmdemux,
2259 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2260 GST_TIME_ARGS (timestamp));
2267 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2268 ("Unknown version: %i.", stream->version), (NULL));
2269 return GST_FLOW_ERROR;
2274 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2275 frame_type), (NULL));
2276 return GST_FLOW_ERROR;
2280 #define PARSE_NUMBER(data, size, number, label) \
2284 number = GST_READ_UINT16_BE (data); \
2285 if (!(number & 0xc000)) { \
2288 number = GST_READ_UINT32_BE (data); \
2298 static GstFlowReturn
2299 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2300 GstBuffer * in, guint offset, guint16 version,
2301 GstClockTime timestamp, gboolean key)
2308 gst_buffer_map (in, &map, GST_MAP_READ);
2310 data = map.data + offset;
2311 size = map.size - offset;
2313 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2314 * was previously for that given stream. */
2315 ret = stream->last_flow;
2321 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2322 guint fragment_size;
2323 GstBuffer *fragment;
2325 pkg_header = *data++;
2329 * bit 7: 1=last block in block chain
2330 * bit 6: 1=short header (only one block?)
2332 if ((pkg_header & 0xc0) == 0x40) {
2333 /* skip unknown byte */
2339 if ((pkg_header & 0x40) == 0) {
2340 pkg_subseq = (*data++) & 0x7f;
2347 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2350 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2354 goto not_enough_data;
2356 pkg_seqnum = *data++;
2360 GST_DEBUG_OBJECT (rmdemux,
2361 "seq %d, subseq %d, offset %d, length %d, size %" G_GSIZE_FORMAT
2362 ", header %02x", pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size,
2365 /* calc size of fragment */
2366 if ((pkg_header & 0xc0) == 0x80) {
2367 fragment_size = pkg_offset;
2369 if ((pkg_header & 0xc0) == 0)
2370 fragment_size = size;
2372 fragment_size = pkg_length;
2374 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2376 /* get the fragment */
2378 gst_buffer_copy_region (in, GST_BUFFER_COPY_ALL, data - map.data,
2381 if (pkg_subseq == 1) {
2382 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2383 gst_adapter_clear (stream->adapter);
2384 stream->frag_current = 0;
2385 stream->frag_count = 0;
2386 stream->frag_length = pkg_length;
2387 } else if (pkg_subseq == 0) {
2388 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2389 stream->frag_current = 0;
2390 stream->frag_count = 0;
2391 stream->frag_length = fragment_size;
2394 /* put fragment in adapter */
2395 gst_adapter_push (stream->adapter, fragment);
2396 stream->frag_offset[stream->frag_count] = stream->frag_current;
2397 stream->frag_current += fragment_size;
2398 stream->frag_count++;
2400 if (stream->frag_count > MAX_FRAGS)
2401 goto too_many_fragments;
2403 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2404 stream->frag_current, stream->frag_length);
2406 /* flush fragment when complete */
2407 if (stream->frag_current >= stream->frag_length) {
2414 /* calculate header size, which is:
2415 * 1 byte for the number of fragments - 1
2416 * for each fragment:
2417 * 4 bytes 0x00000001 little endian
2418 * 4 bytes fragment offset
2420 * This is also the matroska header for realvideo, the decoder needs the
2421 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2422 * in front of the data.
2424 header_size = 1 + (8 * (stream->frag_count));
2426 GST_DEBUG_OBJECT (rmdemux,
2427 "fragmented completed. count %d, header_size %u", stream->frag_count,
2430 avail = gst_adapter_available (stream->adapter);
2432 out = gst_buffer_new_and_alloc (header_size + avail);
2433 gst_buffer_map (out, &outmap, GST_MAP_WRITE);
2434 outdata = outmap.data;
2437 *outdata++ = stream->frag_count - 1;
2438 for (i = 0; i < stream->frag_count; i++) {
2439 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2441 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2445 /* copy packet data after the header now */
2446 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2447 gst_adapter_flush (stream->adapter, avail);
2449 stream->frag_current = 0;
2450 stream->frag_count = 0;
2451 stream->frag_length = 0;
2453 if (timestamp != -1) {
2454 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2455 timestamp -= rmdemux->first_ts;
2459 if (rmdemux->base_ts != -1)
2460 timestamp += rmdemux->base_ts;
2463 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2465 gst_buffer_unmap (out, &outmap);
2467 GST_BUFFER_TIMESTAMP (out) = timestamp;
2469 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2470 GST_TIME_ARGS (timestamp));
2472 if (stream->discont) {
2473 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2474 stream->discont = FALSE;
2478 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DELTA_UNIT);
2481 ret = gst_pad_push (stream->pad, out);
2482 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2483 if (ret != GST_FLOW_OK)
2486 timestamp = GST_CLOCK_TIME_NONE;
2488 data += fragment_size;
2489 size -= fragment_size;
2491 GST_DEBUG_OBJECT (rmdemux, "%" G_GSIZE_FORMAT " bytes left", size);
2494 gst_buffer_unmap (in, &map);
2495 gst_buffer_unref (in);
2502 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2509 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2510 ("Got more fragments (%u) than can be handled (%u)",
2511 stream->frag_count, MAX_FRAGS), (NULL));
2512 ret = GST_FLOW_ERROR;
2517 static GstFlowReturn
2518 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2519 GstBuffer * in, guint offset, guint16 version,
2520 GstClockTime timestamp, gboolean key)
2525 buffer = gst_buffer_copy_region (in, GST_BUFFER_COPY_MEMORY, offset, -1);
2527 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2528 timestamp -= rmdemux->first_ts;
2532 if (rmdemux->base_ts != -1)
2533 timestamp += rmdemux->base_ts;
2535 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2537 if (stream->needs_descrambling) {
2538 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2539 GST_TIME_ARGS (timestamp));
2540 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2542 GST_LOG_OBJECT (rmdemux,
2543 "Pushing buffer of size %" G_GSIZE_FORMAT ", timestamp %"
2544 GST_TIME_FORMAT "to pad %s", gst_buffer_get_size (buffer),
2545 GST_TIME_ARGS (timestamp), GST_PAD_NAME (stream->pad));
2547 if (stream->discont) {
2548 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2549 stream->discont = FALSE;
2551 ret = gst_pad_push (stream->pad, buffer);
2554 gst_buffer_unref (in);
2559 static GstFlowReturn
2560 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2563 GstRMDemuxStream *stream;
2565 GstFlowReturn cret, ret;
2566 GstClockTime timestamp;
2573 gst_buffer_map (in, &map, GST_MAP_READ);
2578 id = RMDEMUX_GUINT16_GET (data);
2580 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2581 if (!stream || !stream->pad)
2582 goto unknown_stream;
2584 /* timestamp in Msec */
2585 ts = RMDEMUX_GUINT32_GET (data + 2);
2586 timestamp = ts * GST_MSECOND;
2588 rmdemux->segment.position = timestamp;
2590 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2591 GST_TIME_FORMAT ", size %" G_GSIZE_FORMAT ", version=%d, ts=%u", id,
2592 GST_TIME_ARGS (timestamp), size, version, ts);
2594 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2595 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2596 GST_TIME_ARGS (timestamp));
2597 rmdemux->first_ts = timestamp;
2600 /* skip stream_id and timestamp */
2605 flags = GST_READ_UINT8 (data + 1);
2610 /* version 1 has an extra byte */
2615 offset = data - map.data;
2616 gst_buffer_unmap (in, &map);
2618 key = (flags & 0x02) != 0;
2619 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2621 if (rmdemux->need_newsegment) {
2624 event = gst_event_new_segment (&rmdemux->segment);
2626 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2627 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2629 gst_rmdemux_send_event (rmdemux, event);
2630 rmdemux->need_newsegment = FALSE;
2632 if (rmdemux->pending_tags != NULL) {
2633 gst_rmdemux_send_event (rmdemux,
2634 gst_event_new_tag (rmdemux->pending_tags));
2635 rmdemux->pending_tags = NULL;
2639 if (stream->pending_tags != NULL) {
2640 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2641 gst_pad_push_event (stream->pad, gst_event_new_tag (stream->pending_tags));
2642 stream->pending_tags = NULL;
2645 if ((rmdemux->offset + size) <= stream->seek_offset) {
2646 GST_DEBUG_OBJECT (rmdemux,
2647 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%"
2648 G_GSIZE_FORMAT, stream->id, stream->seek_offset, rmdemux->offset, size);
2650 gst_buffer_unref (in);
2654 /* do special headers */
2655 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2657 gst_rmdemux_parse_video_packet (rmdemux, stream, in, offset,
2658 version, timestamp, key);
2659 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2661 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, offset,
2662 version, timestamp, key);
2664 gst_buffer_unref (in);
2668 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2676 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2678 gst_buffer_unmap (in, &map);
2679 gst_buffer_unref (in);
2685 gst_rmdemux_plugin_init (GstPlugin * plugin)
2687 return gst_element_register (plugin, "rmdemux",
2688 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);