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., 51 Franklin St, Fifth Floor,
24 * Boston, MA 02110-1301, 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 if (GST_BUFFER_DTS_IS_VALID (buffer))
967 rmdemux->base_ts = GST_BUFFER_DTS (buffer);
969 rmdemux->base_ts = GST_BUFFER_PTS (buffer);
971 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
972 GST_TIME_ARGS (rmdemux->base_ts));
975 gst_adapter_push (rmdemux->adapter, buffer);
977 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %" G_GSIZE_FORMAT,
978 gst_buffer_get_size (buffer));
981 avail = gst_adapter_available (rmdemux->adapter);
983 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
984 switch (rmdemux->state) {
985 case RMDEMUX_STATE_HEADER:
987 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
990 data = gst_adapter_map (rmdemux->adapter, HEADER_SIZE);
992 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
993 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
994 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
996 /* Sanity-check. We assume that the FOURCC is printable ASCII */
997 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
998 /* Failed. Remain in HEADER state, try again... We flush only
999 * the actual FOURCC, not the entire header, because we could
1000 * need to resync anywhere at all... really, this should never
1002 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
1004 gst_adapter_unmap (rmdemux->adapter);
1005 gst_adapter_flush (rmdemux->adapter, 4);
1010 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1012 " size=%08x object_version=%d",
1013 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1014 rmdemux->object_version);
1016 gst_adapter_unmap (rmdemux->adapter);
1017 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1019 switch (rmdemux->object_id) {
1020 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1021 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1023 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1024 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1026 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1027 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1029 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1030 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1032 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1033 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1035 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1036 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1039 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1044 case RMDEMUX_STATE_HEADER_UNKNOWN:
1046 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1049 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1050 GST_FOURCC_ARGS (rmdemux->object_id));
1052 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1053 rmdemux->state = RMDEMUX_STATE_HEADER;
1056 case RMDEMUX_STATE_HEADER_RMF:
1058 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1061 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1062 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1063 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1064 gst_adapter_unmap (rmdemux->adapter);
1065 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1067 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1069 rmdemux->state = RMDEMUX_STATE_HEADER;
1072 case RMDEMUX_STATE_HEADER_PROP:
1074 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1077 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1078 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1079 gst_adapter_unmap (rmdemux->adapter);
1080 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1082 rmdemux->state = RMDEMUX_STATE_HEADER;
1085 case RMDEMUX_STATE_HEADER_MDPR:
1087 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1090 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1091 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1092 gst_adapter_unmap (rmdemux->adapter);
1093 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1095 rmdemux->state = RMDEMUX_STATE_HEADER;
1098 case RMDEMUX_STATE_HEADER_CONT:
1100 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1103 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1104 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1105 gst_adapter_unmap (rmdemux->adapter);
1106 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1108 rmdemux->state = RMDEMUX_STATE_HEADER;
1111 case RMDEMUX_STATE_HEADER_DATA:
1113 /* If we haven't already done so then signal there are no more pads */
1114 if (!rmdemux->have_pads) {
1115 GST_LOG_OBJECT (rmdemux, "no more pads");
1116 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1117 rmdemux->have_pads = TRUE;
1120 /* The actual header is only 8 bytes */
1121 rmdemux->size = DATA_SIZE;
1122 GST_LOG_OBJECT (rmdemux, "data available %" G_GSIZE_FORMAT,
1123 gst_adapter_available (rmdemux->adapter));
1124 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1127 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1128 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1129 gst_adapter_unmap (rmdemux->adapter);
1130 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1132 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1135 case RMDEMUX_STATE_HEADER_INDX:
1137 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1140 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1141 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1142 /* Only flush the header */
1143 gst_adapter_unmap (rmdemux->adapter);
1144 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1146 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1149 case RMDEMUX_STATE_INDX_DATA:
1151 /* There's not always an data to get... */
1152 if (rmdemux->size > 0) {
1153 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1156 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1157 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1158 gst_adapter_unmap (rmdemux->adapter);
1159 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1162 rmdemux->state = RMDEMUX_STATE_HEADER;
1165 case RMDEMUX_STATE_DATA_PACKET:
1169 if (gst_adapter_available (rmdemux->adapter) < 2)
1172 gst_adapter_copy (rmdemux->adapter, header, 0, 2);
1173 version = RMDEMUX_GUINT16_GET (header);
1174 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1176 if (version == 0 || version == 1) {
1179 if (gst_adapter_available (rmdemux->adapter) < 4)
1182 gst_adapter_copy (rmdemux->adapter, header, 0, 4);
1184 length = RMDEMUX_GUINT16_GET (header + 2);
1185 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1188 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1189 /* Invalid, just drop it */
1190 gst_adapter_flush (rmdemux->adapter, 4);
1194 avail = gst_adapter_available (rmdemux->adapter);
1198 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1201 /* flush version and length */
1202 gst_adapter_flush (rmdemux->adapter, 4);
1205 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1207 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1208 rmdemux->chunk_index++;
1211 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1212 rmdemux->state = RMDEMUX_STATE_HEADER;
1215 gst_adapter_flush (rmdemux->adapter, 2);
1217 if (rmdemux->data_offset == 0) {
1218 GST_LOG_OBJECT (rmdemux,
1219 "No further data, internal demux state EOS");
1220 rmdemux->state = RMDEMUX_STATE_EOS;
1222 rmdemux->state = RMDEMUX_STATE_HEADER;
1226 case RMDEMUX_STATE_EOS:
1227 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1230 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1239 static GstRMDemuxStream *
1240 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1244 for (cur = rmdemux->streams; cur; cur = cur->next) {
1245 GstRMDemuxStream *stream = cur->data;
1247 if (stream->id == id) {
1256 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1260 for (cur = rmdemux->streams; cur; cur = cur->next) {
1261 GstRMDemuxStream *stream = cur->data;
1263 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1264 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1266 switch (GST_EVENT_TYPE (event)) {
1267 case GST_EVENT_FLUSH_STOP:
1268 stream->last_ts = -1;
1269 stream->next_ts = -1;
1270 stream->last_seq = -1;
1271 stream->next_seq = -1;
1272 stream->last_flow = GST_FLOW_OK;
1277 gst_event_ref (event);
1278 gst_pad_push_event (stream->pad, event);
1280 gst_event_unref (event);
1284 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1286 GstCaps *stream_caps = NULL;
1287 const gchar *codec_tag = NULL;
1288 gchar *codec_name = NULL;
1292 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1293 char *name = g_strdup_printf ("video_%u", rmdemux->n_video_streams);
1296 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1299 codec_tag = GST_TAG_VIDEO_CODEC;
1301 switch (stream->fourcc) {
1302 case GST_RM_VDO_RV10:
1305 case GST_RM_VDO_RV20:
1308 case GST_RM_VDO_RV30:
1311 case GST_RM_VDO_RV40:
1315 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1316 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1317 GST_WARNING_OBJECT (rmdemux,
1318 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1319 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1324 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1326 "format", G_TYPE_INT,
1327 (int) stream->format,
1328 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1332 gst_caps_set_simple (stream_caps,
1333 "width", G_TYPE_INT, stream->width,
1334 "height", G_TYPE_INT, stream->height,
1335 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1336 stream->framerate_denominator, NULL);
1338 rmdemux->n_video_streams++;
1340 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1341 char *name = g_strdup_printf ("audio_%u", rmdemux->n_audio_streams);
1344 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1345 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1348 codec_tag = GST_TAG_AUDIO_CODEC;
1350 switch (stream->fourcc) {
1351 /* Older RealAudio Codecs */
1352 case GST_RM_AUD_14_4:
1356 case GST_RM_AUD_28_8:
1360 /* DolbyNet (Dolby AC3, low bitrate) */
1361 case GST_RM_AUD_DNET:
1363 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1364 (int) stream->rate, NULL);
1365 stream->needs_descrambling = TRUE;
1366 stream->subpackets_needed = 1;
1367 stream->subpackets = NULL;
1371 case GST_RM_AUD_RAAC:
1372 case GST_RM_AUD_RACP:
1374 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1375 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1376 if (stream->extra_data_size > 0) {
1377 /* strip off an unknown byte in the extra data */
1378 stream->extra_data_size--;
1379 stream->extra_data++;
1381 stream->needs_descrambling = TRUE;
1382 stream->subpackets_needed = 1;
1383 stream->subpackets = NULL;
1387 case GST_RM_AUD_ATRC:
1388 stream_caps = gst_caps_new_empty_simple ("audio/x-vnd.sony.atrac3");
1389 stream->needs_descrambling = TRUE;
1390 stream->subpackets_needed = stream->height;
1391 stream->subpackets = NULL;
1394 /* RealAudio G2 audio */
1395 case GST_RM_AUD_COOK:
1397 stream->needs_descrambling = TRUE;
1398 stream->subpackets_needed = stream->height;
1399 stream->subpackets = NULL;
1402 /* RALF is lossless */
1403 case GST_RM_AUD_RALF:
1404 GST_DEBUG_OBJECT (rmdemux, "RALF");
1405 stream_caps = gst_caps_new_empty_simple ("audio/x-ralf-mpeg4-generic");
1408 case GST_RM_AUD_SIPR:
1410 if (stream->flavor > 3) {
1411 GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
1417 GST_DEBUG_OBJECT (rmdemux, "SIPR");
1418 stream_caps = gst_caps_new_empty_simple ("audio/x-sipro");
1419 stream->needs_descrambling = TRUE;
1420 stream->subpackets_needed = stream->height;
1421 stream->subpackets = NULL;
1422 stream->leaf_size = sipr_subpk_size[stream->flavor];
1427 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1428 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1429 GST_WARNING_OBJECT (rmdemux,
1430 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1431 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1437 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1438 (int) version, NULL);
1442 gst_caps_set_simple (stream_caps,
1443 "flavor", G_TYPE_INT, (int) stream->flavor,
1444 "rate", G_TYPE_INT, (int) stream->rate,
1445 "channels", G_TYPE_INT, (int) stream->n_channels,
1446 "width", G_TYPE_INT, (int) stream->sample_width,
1447 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1448 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1449 "bitrate", G_TYPE_INT, (int) stream->bitrate,
1450 "height", G_TYPE_INT, (int) stream->height, NULL);
1452 rmdemux->n_audio_streams++;
1454 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1460 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1461 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1462 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1463 g_slist_length (rmdemux->streams));
1465 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1468 if (stream->pad && stream_caps) {
1470 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1471 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1473 /* add codec_data if there is any */
1474 if (stream->extra_data_size > 0) {
1477 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1478 gst_buffer_fill (buffer, 0, stream->extra_data, stream->extra_data_size);
1480 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1483 gst_buffer_unref (buffer);
1486 gst_pad_use_fixed_caps (stream->pad);
1488 gst_pad_set_event_function (stream->pad,
1489 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1490 gst_pad_set_query_function (stream->pad,
1491 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1493 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1494 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1495 gst_pad_set_active (stream->pad, TRUE);
1498 gst_pad_create_stream_id_printf (stream->pad,
1499 GST_ELEMENT_CAST (rmdemux), "%03u", stream->id);
1500 gst_pad_push_event (stream->pad, gst_event_new_stream_start (stream_id));
1503 gst_pad_set_caps (stream->pad, stream_caps);
1505 codec_name = gst_pb_utils_get_codec_description (stream_caps);
1507 /* save for later, we must send the tags after the newsegment event */
1508 if (codec_tag != NULL && codec_name != NULL) {
1509 if (stream->pending_tags == NULL)
1510 stream->pending_tags = gst_tag_list_new_empty ();
1511 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1512 codec_tag, codec_name, NULL);
1513 g_free (codec_name);
1515 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1521 gst_caps_unref (stream_caps);
1525 re_skip_pascal_string (const guint8 * ptr)
1535 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1537 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1538 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1542 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1544 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1545 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1546 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1547 RMDEMUX_GUINT32_GET (data + 8));
1548 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1549 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1550 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1551 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1553 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1554 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1556 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1557 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1558 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1559 rmdemux->index_offset);
1560 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1561 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1562 rmdemux->data_offset);
1563 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1564 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1568 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1570 GstRMDemuxStream *stream;
1571 char *stream1_type_string;
1572 char *stream2_type_string;
1576 guint32 max_bitrate;
1577 guint32 avg_bitrate;
1579 stream = g_new0 (GstRMDemuxStream, 1);
1581 stream->id = RMDEMUX_GUINT16_GET (data);
1582 stream->index = NULL;
1583 stream->seek_offset = 0;
1584 stream->last_ts = -1;
1585 stream->next_ts = -1;
1586 stream->last_flow = GST_FLOW_OK;
1587 stream->discont = TRUE;
1588 stream->adapter = gst_adapter_new ();
1589 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1591 /* parse the bitrates */
1592 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1593 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1594 stream->bitrate = avg_bitrate;
1595 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1596 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1597 if (max_bitrate != 0) {
1598 if (stream->pending_tags == NULL)
1599 stream->pending_tags = gst_tag_list_new_empty ();
1600 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1601 GST_TAG_MAXIMUM_BITRATE, max_bitrate, NULL);
1603 if (avg_bitrate != 0) {
1604 if (stream->pending_tags == NULL)
1605 stream->pending_tags = gst_tag_list_new_empty ();
1606 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1607 GST_TAG_BITRATE, avg_bitrate, NULL);
1611 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1612 length - offset, &str_len);
1614 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1615 length - offset, &str_len);
1618 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1620 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1621 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1623 * so, we should not rely on it to know which stream type it is
1626 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1627 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1629 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1630 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1631 } else if (strcmp (stream2_type_string,
1632 "video/x-pn-multirate-realvideo") == 0) {
1633 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1634 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1635 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1636 } else if (strcmp (stream2_type_string,
1637 "audio/x-pn-multirate-realaudio") == 0) {
1638 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1639 } else if (strcmp (stream2_type_string,
1640 "audio/x-pn-multirate-realaudio-live") == 0) {
1641 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1642 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1643 /* Another audio type found in the real testsuite */
1644 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1645 } else if (strcmp (stream1_type_string, "") == 0 &&
1646 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1647 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1649 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1650 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1651 stream1_type_string, stream2_type_string);
1653 g_free (stream1_type_string);
1654 g_free (stream2_type_string);
1658 stream->subtype = stream_type;
1659 switch (stream_type) {
1661 case GST_RMDEMUX_STREAM_VIDEO:
1662 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1663 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1664 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1665 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1666 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1667 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1668 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1669 stream->extra_data_size = length - (offset + 26);
1670 stream->extra_data = (guint8 *) data + offset + 26;
1671 /* Natural way to represent framerates here requires unsigned 32 bit
1672 * numerator, which we don't have. For the nasty case, approximate...
1675 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1676 RMDEMUX_GUINT16_GET (data + offset + 24);
1677 if (numerator > G_MAXINT) {
1678 stream->framerate_numerator = (gint) (numerator >> 1);
1679 stream->framerate_denominator = 32768;
1681 stream->framerate_numerator = (gint) numerator;
1682 stream->framerate_denominator = 65536;
1686 GST_DEBUG_OBJECT (rmdemux,
1687 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1688 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1689 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1690 stream->rate, stream->framerate_numerator,
1691 stream->framerate_denominator, stream->subformat, stream->format,
1692 stream->extra_data_size);
1694 case GST_RMDEMUX_STREAM_AUDIO:{
1695 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1696 GST_INFO ("stream version = %u", stream->version);
1697 switch (stream->version) {
1699 stream->fourcc = GST_RM_AUD_14_4;
1700 stream->packet_size = 20;
1701 stream->rate = 8000;
1702 stream->n_channels = 1;
1703 stream->sample_width = 16;
1705 stream->leaf_size = 0;
1709 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1710 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1711 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1712 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1713 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1714 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1715 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1716 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1717 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1718 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1719 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1720 stream->extra_data_size);
1721 if (length - (offset + 73) >= stream->extra_data_size) {
1722 stream->extra_data = (guint8 *) data + offset + 73;
1724 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1725 stream->extra_data_size = 0;
1729 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1730 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1731 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1732 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1733 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1734 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1735 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1736 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1737 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1738 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1739 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1740 stream->extra_data_size);
1741 if (length - (offset + 78) >= stream->extra_data_size) {
1742 stream->extra_data = (guint8 *) data + offset + 78;
1744 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1745 stream->extra_data_size = 0;
1749 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1754 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1755 GST_DEBUG_OBJECT (rmdemux,
1756 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1757 stream->rate, stream->sample_width, stream->n_channels);
1761 case GST_RMDEMUX_STREAM_FILEINFO:
1765 /* Length of this section */
1766 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1767 RMDEMUX_GUINT32_GET (data + offset));
1770 /* Unknown : 00 00 00 00 */
1773 /* Number of variables that would follow (loop iterations) */
1774 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1777 while (element_nb) {
1778 /* Category Id : 00 00 00 XX 00 00 */
1782 offset += re_skip_pascal_string (data + offset);
1784 /* Variable Value Type */
1785 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1786 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1789 /* Variable Value */
1790 offset += re_skip_pascal_string (data + offset);
1796 case GST_RMDEMUX_STREAM_UNKNOWN:
1801 gst_rmdemux_add_stream (rmdemux, stream);
1805 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1810 n = RMDEMUX_GUINT32_GET (data);
1811 id = RMDEMUX_GUINT16_GET (data + 4);
1812 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1814 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1817 /* Point to the next index_stream */
1818 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1820 /* Return the length of the index */
1825 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1830 GstRMDemuxIndex *index;
1832 /* The number of index records */
1835 if (rmdemux->index_stream == NULL)
1838 /* don't parse the index a second time when operating pull-based and
1839 * reaching the end of the file */
1840 if (rmdemux->index_stream->index_length > 0) {
1841 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1845 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1846 rmdemux->index_stream->index = index;
1847 rmdemux->index_stream->index_length = n;
1849 for (i = 0; i < n; i++) {
1850 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1851 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1853 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1854 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1861 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1863 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1864 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1865 rmdemux->chunk_index = 0;
1866 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1867 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1871 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1875 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1877 GST_LOG_OBJECT (rmdemux, "tags: %" GST_PTR_FORMAT, tags);
1879 rmdemux->pending_tags =
1880 gst_tag_list_merge (rmdemux->pending_tags, tags, GST_TAG_MERGE_APPEND);
1883 static GstFlowReturn
1884 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1889 /* store the value */
1890 stream->last_flow = ret;
1892 /* if it's success we can return the value right away */
1893 if (ret == GST_FLOW_OK)
1896 /* any other error that is not-linked can be returned right
1898 if (ret != GST_FLOW_NOT_LINKED)
1901 for (cur = rmdemux->streams; cur; cur = cur->next) {
1902 GstRMDemuxStream *ostream = cur->data;
1904 ret = ostream->last_flow;
1905 /* some other return value (must be SUCCESS but we can return
1906 * other values as well) */
1907 if (ret != GST_FLOW_NOT_LINKED)
1910 /* if we get here, all other pads were unlinked and we return
1911 * NOT_LINKED then */
1917 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1918 GstRMDemuxStream * stream)
1920 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1923 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1924 stream->subpackets->len);
1925 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1926 g_ptr_array_set_size (stream->subpackets, 0);
1929 static GstFlowReturn
1930 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1932 GstFlowReturn ret = GST_FLOW_ERROR;
1935 guint packet_size = stream->packet_size;
1936 guint height = stream->subpackets->len;
1937 guint leaf_size = stream->leaf_size;
1940 g_assert (stream->height == height);
1942 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1945 outbuf = gst_buffer_new_and_alloc (height * packet_size);
1946 gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
1948 for (p = 0; p < height; ++p) {
1949 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1952 gst_buffer_map (b, &map, GST_MAP_READ);
1955 GST_BUFFER_PTS (outbuf) = GST_BUFFER_PTS (b);
1956 GST_BUFFER_DTS (outbuf) = GST_BUFFER_DTS (b);
1959 for (x = 0; x < packet_size / leaf_size; ++x) {
1962 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1964 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1965 memcpy (outmap.data + leaf_size * idx, map.data + leaf_size * x,
1968 gst_buffer_unmap (b, &map);
1970 gst_buffer_unmap (outbuf, &outmap);
1972 /* some decoders, such as realaudiodec, need to be fed in packet units */
1973 for (p = 0; p < height; ++p) {
1977 gst_buffer_copy_region (outbuf, GST_BUFFER_COPY_ALL, p * packet_size,
1980 GST_LOG_OBJECT (rmdemux, "pushing buffer dts %" GST_TIME_FORMAT ", pts %"
1981 GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_DTS (subbuf)),
1982 GST_TIME_ARGS (GST_BUFFER_PTS (subbuf)));
1984 if (stream->discont) {
1985 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1986 stream->discont = FALSE;
1989 ret = gst_pad_push (stream->pad, subbuf);
1990 if (ret != GST_FLOW_OK)
1994 gst_buffer_unref (outbuf);
1996 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2001 static GstFlowReturn
2002 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
2003 GstRMDemuxStream * stream)
2007 buf = g_ptr_array_index (stream->subpackets, 0);
2008 g_ptr_array_index (stream->subpackets, 0) = NULL;
2009 g_ptr_array_set_size (stream->subpackets, 0);
2011 buf = gst_rm_utils_descramble_dnet_buffer (buf);
2013 if (stream->discont) {
2014 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2015 stream->discont = FALSE;
2017 return gst_pad_push (stream->pad, buf);
2020 static GstFlowReturn
2021 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
2022 GstRMDemuxStream * stream)
2025 GstBuffer *buf, *outbuf;
2026 guint frames, index, i;
2028 GstClockTime timestamp;
2032 buf = g_ptr_array_index (stream->subpackets, 0);
2033 g_ptr_array_index (stream->subpackets, 0) = NULL;
2034 g_ptr_array_set_size (stream->subpackets, 0);
2036 gst_buffer_map (buf, &map, GST_MAP_READ);
2037 timestamp = GST_BUFFER_PTS (buf);
2039 frames = (map.data[1] & 0xf0) >> 4;
2040 index = 2 * frames + 2;
2042 for (i = 0; i < frames; i++) {
2043 guint len = (map.data[i * 2 + 2] << 8) | map.data[i * 2 + 3];
2045 outbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, index, len);
2047 GST_BUFFER_PTS (outbuf) = timestamp;
2048 GST_BUFFER_DTS (outbuf) = timestamp;
2053 if (stream->discont) {
2054 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2055 stream->discont = FALSE;
2057 res = gst_pad_push (stream->pad, outbuf);
2058 if (res != GST_FLOW_OK)
2061 gst_buffer_unmap (buf, &map);
2062 gst_buffer_unref (buf);
2066 static GstFlowReturn
2067 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2068 GstRMDemuxStream * stream)
2073 guint packet_size = stream->packet_size;
2074 guint height = stream->subpackets->len;
2077 g_assert (stream->height == height);
2079 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2080 stream->leaf_size, height);
2082 outbuf = gst_buffer_new_and_alloc (height * packet_size);
2083 gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
2085 for (p = 0; p < height; ++p) {
2086 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2089 GST_BUFFER_DTS (outbuf) = GST_BUFFER_DTS (b);
2090 GST_BUFFER_PTS (outbuf) = GST_BUFFER_PTS (b);
2093 gst_buffer_extract (b, 0, outmap.data + packet_size * p, packet_size);
2095 gst_buffer_unmap (outbuf, &outmap);
2097 GST_LOG_OBJECT (rmdemux, "pushing buffer dts %" GST_TIME_FORMAT ", pts %"
2098 GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_DTS (outbuf)),
2099 GST_TIME_ARGS (GST_BUFFER_PTS (outbuf)));
2101 if (stream->discont) {
2102 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2103 stream->discont = FALSE;
2106 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2108 ret = gst_pad_push (stream->pad, outbuf);
2110 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2115 static GstFlowReturn
2116 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2117 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2121 if (stream->subpackets == NULL)
2122 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2124 GST_LOG ("Got subpacket %u/%u, len=%" G_GSIZE_FORMAT ", key=%d",
2125 stream->subpackets->len + 1, stream->subpackets_needed,
2126 gst_buffer_get_size (buf), keyframe);
2128 if (keyframe && stream->subpackets->len > 0) {
2129 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2132 g_ptr_array_add (stream->subpackets, buf);
2134 if (stream->subpackets->len < stream->subpackets_needed)
2137 g_assert (stream->subpackets->len >= 1);
2139 switch (stream->fourcc) {
2140 case GST_RM_AUD_DNET:
2141 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2143 case GST_RM_AUD_COOK:
2144 case GST_RM_AUD_ATRC:
2145 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2147 case GST_RM_AUD_RAAC:
2148 case GST_RM_AUD_RACP:
2149 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2151 case GST_RM_AUD_SIPR:
2152 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2155 ret = GST_FLOW_ERROR;
2156 g_assert_not_reached ();
2162 #define PARSE_NUMBER(data, size, number, label) \
2166 number = GST_READ_UINT16_BE (data); \
2167 if (!(number & 0xc000)) { \
2170 number = GST_READ_UINT32_BE (data); \
2180 static GstFlowReturn
2181 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2182 GstBuffer * in, guint offset, guint16 version,
2183 GstClockTime timestamp, gboolean key)
2190 gst_buffer_map (in, &map, GST_MAP_READ);
2192 data = map.data + offset;
2193 size = map.size - offset;
2195 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2196 * was previously for that given stream. */
2197 ret = stream->last_flow;
2203 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2204 guint fragment_size;
2205 GstBuffer *fragment;
2207 pkg_header = *data++;
2211 * bit 7: 1=last block in block chain
2212 * bit 6: 1=short header (only one block?)
2214 if ((pkg_header & 0xc0) == 0x40) {
2215 /* skip unknown byte */
2221 if ((pkg_header & 0x40) == 0) {
2222 pkg_subseq = (*data++) & 0x7f;
2229 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2232 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2236 goto not_enough_data;
2238 pkg_seqnum = *data++;
2242 GST_DEBUG_OBJECT (rmdemux,
2243 "seq %d, subseq %d, offset %d, length %d, size %" G_GSIZE_FORMAT
2244 ", header %02x", pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size,
2247 /* calc size of fragment */
2248 if ((pkg_header & 0xc0) == 0x80) {
2249 fragment_size = pkg_offset;
2251 if ((pkg_header & 0xc0) == 0)
2252 fragment_size = size;
2254 fragment_size = pkg_length;
2256 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2258 /* get the fragment */
2260 gst_buffer_copy_region (in, GST_BUFFER_COPY_ALL, data - map.data,
2263 if (pkg_subseq == 1) {
2264 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2265 gst_adapter_clear (stream->adapter);
2266 stream->frag_current = 0;
2267 stream->frag_count = 0;
2268 stream->frag_length = pkg_length;
2269 } else if (pkg_subseq == 0) {
2270 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2271 stream->frag_current = 0;
2272 stream->frag_count = 0;
2273 stream->frag_length = fragment_size;
2276 /* put fragment in adapter */
2277 gst_adapter_push (stream->adapter, fragment);
2278 stream->frag_offset[stream->frag_count] = stream->frag_current;
2279 stream->frag_current += fragment_size;
2280 stream->frag_count++;
2282 if (stream->frag_count > MAX_FRAGS)
2283 goto too_many_fragments;
2285 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2286 stream->frag_current, stream->frag_length);
2288 /* flush fragment when complete */
2289 if (stream->frag_current >= stream->frag_length) {
2296 /* calculate header size, which is:
2297 * 1 byte for the number of fragments - 1
2298 * for each fragment:
2299 * 4 bytes 0x00000001 little endian
2300 * 4 bytes fragment offset
2302 * This is also the matroska header for realvideo, the decoder needs the
2303 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2304 * in front of the data.
2306 header_size = 1 + (8 * (stream->frag_count));
2308 GST_DEBUG_OBJECT (rmdemux,
2309 "fragmented completed. count %d, header_size %u", stream->frag_count,
2312 avail = gst_adapter_available (stream->adapter);
2314 out = gst_buffer_new_and_alloc (header_size + avail);
2315 gst_buffer_map (out, &outmap, GST_MAP_WRITE);
2316 outdata = outmap.data;
2319 *outdata++ = stream->frag_count - 1;
2320 for (i = 0; i < stream->frag_count; i++) {
2321 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2323 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2327 /* copy packet data after the header now */
2328 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2329 gst_adapter_flush (stream->adapter, avail);
2331 stream->frag_current = 0;
2332 stream->frag_count = 0;
2333 stream->frag_length = 0;
2335 if (timestamp != -1) {
2336 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2337 timestamp -= rmdemux->first_ts;
2341 if (rmdemux->base_ts != -1)
2342 timestamp += rmdemux->base_ts;
2344 gst_buffer_unmap (out, &outmap);
2347 GST_BUFFER_DTS (out) = timestamp;
2348 GST_BUFFER_PTS (out) = GST_CLOCK_TIME_NONE;
2350 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2351 GST_TIME_ARGS (timestamp));
2353 if (stream->discont) {
2354 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2355 stream->discont = FALSE;
2359 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DELTA_UNIT);
2362 ret = gst_pad_push (stream->pad, out);
2363 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2364 if (ret != GST_FLOW_OK)
2367 timestamp = GST_CLOCK_TIME_NONE;
2369 data += fragment_size;
2370 size -= fragment_size;
2372 GST_DEBUG_OBJECT (rmdemux, "%" G_GSIZE_FORMAT " bytes left", size);
2375 gst_buffer_unmap (in, &map);
2376 gst_buffer_unref (in);
2383 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2390 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2391 ("Got more fragments (%u) than can be handled (%u)",
2392 stream->frag_count, MAX_FRAGS), (NULL));
2393 ret = GST_FLOW_ERROR;
2398 static GstFlowReturn
2399 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2400 GstBuffer * in, guint offset, guint16 version,
2401 GstClockTime timestamp, gboolean key)
2406 buffer = gst_buffer_copy_region (in, GST_BUFFER_COPY_MEMORY, offset, -1);
2408 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2409 timestamp -= rmdemux->first_ts;
2413 if (rmdemux->base_ts != -1)
2414 timestamp += rmdemux->base_ts;
2416 GST_BUFFER_PTS (buffer) = timestamp;
2417 GST_BUFFER_DTS (buffer) = timestamp;
2419 if (stream->needs_descrambling) {
2420 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2421 GST_TIME_ARGS (timestamp));
2422 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2424 GST_LOG_OBJECT (rmdemux,
2425 "Pushing buffer of size %" G_GSIZE_FORMAT ", timestamp %"
2426 GST_TIME_FORMAT "to pad %s", gst_buffer_get_size (buffer),
2427 GST_TIME_ARGS (timestamp), GST_PAD_NAME (stream->pad));
2429 if (stream->discont) {
2430 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2431 stream->discont = FALSE;
2433 ret = gst_pad_push (stream->pad, buffer);
2436 gst_buffer_unref (in);
2441 static GstFlowReturn
2442 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2445 GstRMDemuxStream *stream;
2447 GstFlowReturn cret, ret;
2448 GstClockTime timestamp;
2455 gst_buffer_map (in, &map, GST_MAP_READ);
2460 id = RMDEMUX_GUINT16_GET (data);
2462 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2463 if (!stream || !stream->pad)
2464 goto unknown_stream;
2466 /* timestamp in Msec */
2467 ts = RMDEMUX_GUINT32_GET (data + 2);
2468 timestamp = ts * GST_MSECOND;
2470 rmdemux->segment.position = timestamp;
2472 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2473 GST_TIME_FORMAT ", size %" G_GSIZE_FORMAT ", version=%d, ts=%u", id,
2474 GST_TIME_ARGS (timestamp), size, version, ts);
2476 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2477 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2478 GST_TIME_ARGS (timestamp));
2479 rmdemux->first_ts = timestamp;
2482 /* skip stream_id and timestamp */
2487 flags = GST_READ_UINT8 (data + 1);
2492 /* version 1 has an extra byte */
2497 offset = data - map.data;
2498 gst_buffer_unmap (in, &map);
2500 key = (flags & 0x02) != 0;
2501 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2503 if (rmdemux->need_newsegment) {
2506 event = gst_event_new_segment (&rmdemux->segment);
2508 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2509 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2511 gst_rmdemux_send_event (rmdemux, event);
2512 rmdemux->need_newsegment = FALSE;
2514 if (rmdemux->pending_tags != NULL) {
2515 gst_rmdemux_send_event (rmdemux,
2516 gst_event_new_tag (rmdemux->pending_tags));
2517 rmdemux->pending_tags = NULL;
2521 if (stream->pending_tags != NULL) {
2522 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2523 gst_pad_push_event (stream->pad, gst_event_new_tag (stream->pending_tags));
2524 stream->pending_tags = NULL;
2527 if ((rmdemux->offset + size) <= stream->seek_offset) {
2528 GST_DEBUG_OBJECT (rmdemux,
2529 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%"
2530 G_GSIZE_FORMAT, stream->id, stream->seek_offset, rmdemux->offset, size);
2532 gst_buffer_unref (in);
2536 /* do special headers */
2537 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2539 gst_rmdemux_parse_video_packet (rmdemux, stream, in, offset,
2540 version, timestamp, key);
2541 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2543 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, offset,
2544 version, timestamp, key);
2546 gst_buffer_unref (in);
2550 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2558 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2560 gst_buffer_unmap (in, &map);
2561 gst_buffer_unref (in);
2567 gst_rmdemux_plugin_init (GstPlugin * plugin)
2569 return gst_element_register (plugin, "rmdemux",
2570 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);