1 /* GStreamer RealMedia demuxer
2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2003> David A. Schleef <ds@schleef.org>
4 * Copyright (C) <2004> Stephane Loeuillet <gstreamer@leroutier.net>
5 * Copyright (C) <2005> Owen Fraser-Green <owen@discobabe.net>
6 * Copyright (C) <2005> Michael Smith <fluendo.com>
7 * Copyright (C) <2006> Wim Taymans <wim@fluendo.com>
8 * Copyright (C) <2006> Tim-Philipp Müller <tim centricular net>
9 * Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Library General Public
13 * License as published by the Free Software Foundation; either
14 * version 2 of the License, or (at your option) any later version.
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Library General Public License for more details.
21 * You should have received a copy of the GNU Library General Public
22 * License along with this library; if not, write to the
23 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 * Boston, MA 02111-1307, USA.
31 /* FIXME 0.11: suppress warnings for deprecated API such as GStaticRecMutex
32 * with newer GLib versions (>= 2.31.0) */
33 #define GLIB_DISABLE_DEPRECATION_WARNINGS
41 #define RMDEMUX_GUINT32_GET(a) GST_READ_UINT32_BE(a)
42 #define RMDEMUX_GUINT16_GET(a) GST_READ_UINT16_BE(a)
43 #define RMDEMUX_FOURCC_GET(a) GST_READ_UINT32_LE(a)
44 #define HEADER_SIZE 10
49 static const guint8 sipr_subpk_size[4] = { 29, 19, 37, 20 };
51 typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
53 struct _GstRMDemuxStream
62 GstFlowReturn last_flow;
67 GstRMDemuxIndex *index;
69 gint framerate_numerator;
70 gint framerate_denominator;
76 guint16 rate; /* samplerate */
77 guint16 n_channels; /* channels */
78 guint16 sample_width; /* bits_per_sample */
79 guint16 leaf_size; /* subpacket_size */
80 guint32 packet_size; /* coded_frame_size */
82 guint32 extra_data_size; /* codec_data_length */
83 guint8 *extra_data; /* extras */
86 gboolean needs_descrambling;
87 guint subpackets_needed; /* subpackets needed for descrambling */
88 GPtrArray *subpackets; /* array containing subpacket GstBuffers */
90 /* Variables needed for fixing timestamps. */
91 GstClockTime next_ts, last_ts;
92 guint16 next_seq, last_seq;
99 guint frag_offset[MAX_FRAGS];
102 GstTagList *pending_tags;
105 struct _GstRMDemuxIndex
108 GstClockTime timestamp;
111 static GstStaticPadTemplate gst_rmdemux_sink_template =
112 GST_STATIC_PAD_TEMPLATE ("sink",
115 GST_STATIC_CAPS ("application/vnd.rn-realmedia")
118 static GstStaticPadTemplate gst_rmdemux_videosrc_template =
119 GST_STATIC_PAD_TEMPLATE ("video_%u",
122 GST_STATIC_CAPS_ANY);
124 static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
125 GST_STATIC_PAD_TEMPLATE ("audio_%u",
128 GST_STATIC_CAPS_ANY);
130 GST_DEBUG_CATEGORY_STATIC (rmdemux_debug);
131 #define GST_CAT_DEFAULT rmdemux_debug
133 static GstElementClass *parent_class = NULL;
135 static void gst_rmdemux_class_init (GstRMDemuxClass * klass);
136 static void gst_rmdemux_base_init (GstRMDemuxClass * klass);
137 static void gst_rmdemux_init (GstRMDemux * rmdemux);
138 static void gst_rmdemux_finalize (GObject * object);
139 static GstStateChangeReturn gst_rmdemux_change_state (GstElement * element,
140 GstStateChange transition);
141 static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstObject * parent,
143 static void gst_rmdemux_loop (GstPad * pad);
144 static gboolean gst_rmdemux_sink_activate (GstPad * sinkpad,
146 static gboolean gst_rmdemux_sink_activate_mode (GstPad * sinkpad,
147 GstObject * parent, GstPadMode mode, gboolean active);
148 static gboolean gst_rmdemux_sink_event (GstPad * pad, GstObject * parent,
150 static gboolean gst_rmdemux_src_event (GstPad * pad, GstObject * parent,
152 static void gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event);
153 static gboolean gst_rmdemux_src_query (GstPad * pad, GstObject * parent,
155 static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux,
158 static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data,
160 static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data,
162 static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux,
163 const guint8 * data, int length);
164 static guint gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data,
166 static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data,
168 static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data,
170 static GstFlowReturn gst_rmdemux_parse_packet (GstRMDemux * rmdemux,
171 GstBuffer * in, guint16 version);
172 static void gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux,
173 const guint8 * data, int length);
174 static void gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
175 GstRMDemuxStream * stream);
176 static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
180 gst_rmdemux_get_type (void)
182 static GType rmdemux_type = 0;
185 static const GTypeInfo rmdemux_info = {
186 sizeof (GstRMDemuxClass),
187 (GBaseInitFunc) gst_rmdemux_base_init, NULL,
188 (GClassInitFunc) gst_rmdemux_class_init,
189 NULL, NULL, sizeof (GstRMDemux), 0,
190 (GInstanceInitFunc) gst_rmdemux_init,
194 g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
201 gst_rmdemux_base_init (GstRMDemuxClass * klass)
203 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
205 gst_element_class_add_pad_template (element_class,
206 gst_static_pad_template_get (&gst_rmdemux_sink_template));
207 gst_element_class_add_pad_template (element_class,
208 gst_static_pad_template_get (&gst_rmdemux_videosrc_template));
209 gst_element_class_add_pad_template (element_class,
210 gst_static_pad_template_get (&gst_rmdemux_audiosrc_template));
211 gst_element_class_set_details_simple (element_class, "RealMedia Demuxer",
213 "Demultiplex a RealMedia file into audio and video streams",
214 "David Schleef <ds@schleef.org>");
218 gst_rmdemux_class_init (GstRMDemuxClass * klass)
220 GObjectClass *gobject_class;
221 GstElementClass *gstelement_class;
223 gobject_class = (GObjectClass *) klass;
224 gstelement_class = (GstElementClass *) klass;
226 parent_class = g_type_class_peek_parent (klass);
228 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rmdemux_change_state);
230 GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
231 0, "Demuxer for Realmedia streams");
233 gobject_class->finalize = gst_rmdemux_finalize;
237 gst_rmdemux_finalize (GObject * object)
239 GstRMDemux *rmdemux = GST_RMDEMUX (object);
241 if (rmdemux->adapter) {
242 g_object_unref (rmdemux->adapter);
243 rmdemux->adapter = NULL;
246 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
250 gst_rmdemux_init (GstRMDemux * rmdemux)
253 gst_pad_new_from_static_template (&gst_rmdemux_sink_template, "sink");
254 gst_pad_set_event_function (rmdemux->sinkpad,
255 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_event));
256 gst_pad_set_chain_function (rmdemux->sinkpad,
257 GST_DEBUG_FUNCPTR (gst_rmdemux_chain));
258 gst_pad_set_activate_function (rmdemux->sinkpad,
259 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate));
260 gst_pad_set_activatemode_function (rmdemux->sinkpad,
261 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_mode));
263 gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
265 rmdemux->adapter = gst_adapter_new ();
266 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
267 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
268 rmdemux->need_newsegment = TRUE;
270 gst_rm_utils_run_tests ();
274 gst_rmdemux_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
278 switch (GST_EVENT_TYPE (event)) {
279 case GST_EVENT_SEGMENT:
280 gst_event_unref (event);
284 ret = gst_pad_event_default (pad, parent, event);
291 gst_rmdemux_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
295 GstRMDemux *rmdemux = GST_RMDEMUX (parent);
297 GST_LOG_OBJECT (rmdemux, "handling src event");
299 switch (GST_EVENT_TYPE (event)) {
304 GST_LOG_OBJECT (rmdemux, "Event on src: SEEK");
305 /* can't seek if we are not seekable, FIXME could pass the
306 * seek query upstream after converting it to bytes using
307 * the average bitrate of the stream. */
308 if (!rmdemux->seekable) {
310 GST_DEBUG ("seek on non seekable stream");
314 GST_OBJECT_LOCK (rmdemux);
315 /* check if we can do the seek now */
316 running = rmdemux->running;
317 GST_OBJECT_UNLOCK (rmdemux);
319 /* now do the seek */
321 ret = gst_rmdemux_perform_seek (rmdemux, event);
325 gst_event_unref (event);
329 GST_LOG_OBJECT (rmdemux, "Event on src: type=%d", GST_EVENT_TYPE (event));
330 ret = gst_pad_event_default (pad, parent, event);
337 GST_DEBUG ("error handling event");
338 gst_event_unref (event);
342 /* Validate that this looks like a reasonable point to seek to */
344 gst_rmdemux_validate_offset (GstRMDemux * rmdemux)
347 GstFlowReturn flowret;
348 guint16 version, length;
352 flowret = gst_pad_pull_range (rmdemux->sinkpad, rmdemux->offset, 4, &buffer);
354 if (flowret != GST_FLOW_OK) {
355 GST_DEBUG_OBJECT (rmdemux, "Failed to pull data at offset %d",
359 /* TODO: Can we also be seeking to a 'DATA' chunk header? Check this.
360 * Also, for the case we currently handle, can we check any more? It's pretty
361 * sucky to not be validating a little more heavily than this... */
362 /* This should now be the start of a data packet header. That begins with
363 * a 2-byte 'version' field, which has to be 0 or 1, then a length. I'm not
364 * certain what values are valid for length, but it must always be at least
365 * 4 bytes, and we can check that it won't take us past our known total size
368 data = gst_buffer_map (buffer, NULL, NULL, GST_MAP_READ);
369 version = RMDEMUX_GUINT16_GET (data);
370 if (version != 0 && version != 1) {
371 GST_DEBUG_OBJECT (rmdemux, "Expected version 0 or 1, got %d",
376 length = RMDEMUX_GUINT16_GET (data + 2);
377 /* TODO: Also check against total stream length */
379 GST_DEBUG_OBJECT (rmdemux, "Expected length >= 4, got %d", (int) length);
382 gst_buffer_unmap (buffer, data, -1);
385 rmdemux->offset += 4;
386 gst_adapter_clear (rmdemux->adapter);
387 gst_adapter_push (rmdemux->adapter, buffer);
389 GST_WARNING_OBJECT (rmdemux, "Failed to validate seek offset at %d",
391 gst_buffer_unref (buffer);
398 find_seek_offset_bytes (GstRMDemux * rmdemux, guint target)
402 gboolean ret = FALSE;
404 for (cur = rmdemux->streams; cur; cur = cur->next) {
405 GstRMDemuxStream *stream = cur->data;
407 /* Search backwards through this stream's index until we find the first
408 * timestamp before our target time */
409 for (i = stream->index_length - 1; i >= 0; i--) {
410 if (stream->index[i].offset <= target) {
411 /* Set the seek_offset for the stream so we don't bother parsing it
412 * until we've passed that point */
413 stream->seek_offset = stream->index[i].offset;
414 rmdemux->offset = stream->index[i].offset;
424 find_seek_offset_time (GstRMDemux * rmdemux, GstClockTime time)
427 gboolean ret = FALSE;
429 GstClockTime earliest = GST_CLOCK_TIME_NONE;
432 for (cur = rmdemux->streams; cur; cur = cur->next, n_stream++) {
433 GstRMDemuxStream *stream = cur->data;
435 /* Search backwards through this stream's index until we find the first
436 * timestamp before our target time */
437 for (i = stream->index_length - 1; i >= 0; i--) {
438 if (stream->index[i].timestamp <= time) {
439 /* Set the seek_offset for the stream so we don't bother parsing it
440 * until we've passed that point */
441 stream->seek_offset = stream->index[i].offset;
443 /* If it's also the earliest timestamp we've seen of all streams, then
446 if (earliest == GST_CLOCK_TIME_NONE ||
447 stream->index[i].timestamp < earliest) {
448 earliest = stream->index[i].timestamp;
449 rmdemux->offset = stream->index[i].offset;
450 GST_DEBUG_OBJECT (rmdemux,
451 "We're looking for %" GST_TIME_FORMAT
452 " and we found that stream %d has the latest index at %"
453 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start), n_stream,
454 GST_TIME_ARGS (earliest));
462 stream->discont = TRUE;
468 gst_rmdemux_perform_seek (GstRMDemux * rmdemux, GstEvent * event)
476 GstSeekType cur_type, stop_type;
481 GST_DEBUG_OBJECT (rmdemux, "seek with event");
483 gst_event_parse_seek (event, &rate, &format, &flags,
484 &cur_type, &cur, &stop_type, &stop);
486 /* we can only seek on time */
487 if (format != GST_FORMAT_TIME) {
488 GST_DEBUG_OBJECT (rmdemux, "can only seek on TIME");
491 /* cannot yet do backwards playback */
493 GST_DEBUG_OBJECT (rmdemux, "can only seek with positive rate, not %lf",
498 GST_DEBUG_OBJECT (rmdemux, "seek without event");
504 GST_DEBUG_OBJECT (rmdemux, "seek, rate %g", rate);
506 flush = flags & GST_SEEK_FLAG_FLUSH;
508 /* first step is to unlock the streaming thread if it is
509 * blocked in a chain call, we do this by starting the flush. */
511 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_start ());
512 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_start ());
514 gst_pad_pause_task (rmdemux->sinkpad);
517 GST_LOG_OBJECT (rmdemux, "Done starting flushes");
519 /* now grab the stream lock so that streaming cannot continue, for
520 * non flushing seeks when the element is in PAUSED this could block
522 GST_PAD_STREAM_LOCK (rmdemux->sinkpad);
524 GST_LOG_OBJECT (rmdemux, "Took streamlock");
527 gst_segment_do_seek (&rmdemux->segment, rate, format, flags,
528 cur_type, cur, stop_type, stop, &update);
531 GST_DEBUG_OBJECT (rmdemux, "segment positions set to %" GST_TIME_FORMAT "-%"
532 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start),
533 GST_TIME_ARGS (rmdemux->segment.stop));
535 /* we need to stop flushing on the sinkpad as we're going to use it
536 * next. We can do this as we have the STREAM lock now. */
537 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop (TRUE));
539 GST_LOG_OBJECT (rmdemux, "Pushed FLUSH_STOP event");
541 /* For each stream, find the first index offset equal to or before our seek
542 * target. Of these, find the smallest offset. That's where we seek to.
544 * Then we pull 4 bytes from that offset, and validate that we've seeked to a
545 * what looks like a plausible packet.
546 * If that fails, restart, with the seek target set to one less than the
547 * offset we just tried. If we run out of places to try, treat that as a fatal
550 if (!find_seek_offset_time (rmdemux, rmdemux->segment.position)) {
551 GST_LOG_OBJECT (rmdemux, "Failed to find seek offset by time");
556 GST_LOG_OBJECT (rmdemux, "Validating offset %u", rmdemux->offset);
557 validated = gst_rmdemux_validate_offset (rmdemux);
559 GST_INFO_OBJECT (rmdemux, "Failed to validate offset at %u",
561 if (!find_seek_offset_bytes (rmdemux, rmdemux->offset - 1)) {
565 validated = gst_rmdemux_validate_offset (rmdemux);
568 GST_LOG_OBJECT (rmdemux, "Found final offset. Excellent!");
570 /* now we have a new position, prepare for streaming again */
572 /* Reset the demuxer state */
573 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
576 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop (TRUE));
578 /* must send newsegment event from streaming thread, so just set flag */
579 rmdemux->need_newsegment = TRUE;
581 /* notify start of new segment */
582 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
583 gst_element_post_message (GST_ELEMENT_CAST (rmdemux),
584 gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
585 GST_FORMAT_TIME, rmdemux->segment.position));
588 /* restart our task since it might have been stopped when we did the
590 gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
595 /* streaming can continue now */
596 GST_PAD_STREAM_UNLOCK (rmdemux->sinkpad);
602 GST_DEBUG_OBJECT (rmdemux, "seek failed");
609 gst_rmdemux_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
611 gboolean res = FALSE;
614 rmdemux = GST_RMDEMUX (parent);
616 switch (GST_QUERY_TYPE (query)) {
617 case GST_QUERY_POSITION:
618 GST_DEBUG_OBJECT (rmdemux, "Position query: no idea from demuxer!");
620 case GST_QUERY_DURATION:{
623 gst_query_parse_duration (query, &fmt, NULL);
624 if (fmt == GST_FORMAT_TIME) {
625 GST_OBJECT_LOCK (rmdemux);
626 if (G_LIKELY (rmdemux->running)) {
627 gst_query_set_duration (query, GST_FORMAT_TIME, rmdemux->duration);
628 GST_DEBUG_OBJECT (rmdemux, "duration set to %" GST_TIME_FORMAT,
629 GST_TIME_ARGS (rmdemux->duration));
632 GST_OBJECT_UNLOCK (rmdemux);
636 case GST_QUERY_SEEKING:{
639 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
640 if (fmt == GST_FORMAT_TIME) {
641 GST_OBJECT_LOCK (rmdemux);
642 if (G_LIKELY (rmdemux->running)) {
643 gst_query_set_seeking (query, GST_FORMAT_TIME, rmdemux->seekable,
644 0, rmdemux->duration);
647 GST_OBJECT_UNLOCK (rmdemux);
652 res = gst_pad_query_default (pad, parent, query);
660 gst_rmdemux_reset (GstRMDemux * rmdemux)
664 GST_OBJECT_LOCK (rmdemux);
665 rmdemux->running = FALSE;
666 GST_OBJECT_UNLOCK (rmdemux);
668 for (cur = rmdemux->streams; cur; cur = cur->next) {
669 GstRMDemuxStream *stream = cur->data;
671 g_object_unref (stream->adapter);
672 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
673 gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
674 if (stream->pending_tags)
675 gst_tag_list_free (stream->pending_tags);
676 if (stream->subpackets)
677 g_ptr_array_free (stream->subpackets, TRUE);
678 g_free (stream->index);
681 g_slist_free (rmdemux->streams);
682 rmdemux->streams = NULL;
683 rmdemux->n_audio_streams = 0;
684 rmdemux->n_video_streams = 0;
686 if (rmdemux->pending_tags != NULL) {
687 gst_tag_list_free (rmdemux->pending_tags);
688 rmdemux->pending_tags = NULL;
691 gst_adapter_clear (rmdemux->adapter);
692 rmdemux->state = RMDEMUX_STATE_HEADER;
693 rmdemux->have_pads = FALSE;
695 gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
696 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
697 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
698 rmdemux->need_newsegment = TRUE;
701 static GstStateChangeReturn
702 gst_rmdemux_change_state (GstElement * element, GstStateChange transition)
704 GstRMDemux *rmdemux = GST_RMDEMUX (element);
705 GstStateChangeReturn res;
707 switch (transition) {
708 case GST_STATE_CHANGE_NULL_TO_READY:
710 case GST_STATE_CHANGE_READY_TO_PAUSED:
711 rmdemux->state = RMDEMUX_STATE_HEADER;
712 rmdemux->have_pads = FALSE;
713 gst_segment_init (&rmdemux->segment, GST_FORMAT_TIME);
714 rmdemux->running = FALSE;
716 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
722 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
724 switch (transition) {
725 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
727 case GST_STATE_CHANGE_PAUSED_TO_READY:{
728 gst_rmdemux_reset (rmdemux);
731 case GST_STATE_CHANGE_READY_TO_NULL:
740 /* this function is called when the pad is activated and should start
743 * We check if we can do random access to decide if we work push or
747 gst_rmdemux_sink_activate (GstPad * sinkpad, GstObject * parent)
752 query = gst_query_new_scheduling ();
754 if (!gst_pad_peer_query (sinkpad, query)) {
755 gst_query_unref (query);
759 pull_mode = gst_query_has_scheduling_mode (query, GST_PAD_MODE_PULL);
760 gst_query_unref (query);
765 GST_DEBUG_OBJECT (sinkpad, "activating pull");
766 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
770 GST_DEBUG_OBJECT (sinkpad, "activating push");
771 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
776 gst_rmdemux_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
777 GstPadMode mode, gboolean active)
782 demux = GST_RMDEMUX (parent);
785 case GST_PAD_MODE_PUSH:
786 demux->seekable = FALSE;
789 case GST_PAD_MODE_PULL:
791 demux->seekable = TRUE;
793 demux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
794 demux->data_offset = G_MAXUINT;
796 gst_pad_start_task (sinkpad, (GstTaskFunction) gst_rmdemux_loop,
799 res = gst_pad_stop_task (sinkpad);
810 /* random access mode - just pass over to our chain function */
812 gst_rmdemux_loop (GstPad * pad)
816 GstFlowReturn ret = GST_FLOW_OK;
819 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
821 GST_LOG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
822 rmdemux->loop_state, rmdemux->offset);
824 switch (rmdemux->state) {
825 case RMDEMUX_STATE_HEADER:
828 case RMDEMUX_STATE_HEADER_DATA:
831 case RMDEMUX_STATE_DATA_PACKET:
832 size = rmdemux->avg_packet_size;
834 case RMDEMUX_STATE_EOS:
835 GST_LOG_OBJECT (rmdemux, "At EOS, pausing task");
839 GST_LOG_OBJECT (rmdemux, "Default: requires %d bytes (state is %d)",
840 (int) rmdemux->size, rmdemux->state);
841 size = rmdemux->size;
844 ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
845 if (ret != GST_FLOW_OK) {
846 if (rmdemux->offset == rmdemux->index_offset) {
847 /* The index isn't available so forget about it */
848 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
849 rmdemux->offset = rmdemux->data_offset;
850 GST_OBJECT_LOCK (rmdemux);
851 rmdemux->running = TRUE;
852 rmdemux->seekable = FALSE;
853 GST_OBJECT_UNLOCK (rmdemux);
856 GST_DEBUG_OBJECT (rmdemux, "Unable to pull %d bytes at offset 0x%08x "
857 "(pull_range returned flow %s, state is %d)", (gint) size,
858 rmdemux->offset, gst_flow_get_name (ret), GST_STATE (rmdemux));
863 size = gst_buffer_get_size (buffer);
865 /* Defer to the chain function */
866 ret = gst_rmdemux_chain (pad, GST_OBJECT_CAST (rmdemux), buffer);
867 if (ret != GST_FLOW_OK) {
868 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
873 rmdemux->offset += size;
875 switch (rmdemux->loop_state) {
876 case RMDEMUX_LOOP_STATE_HEADER:
877 if (rmdemux->offset >= rmdemux->data_offset) {
878 /* It's the end of the header */
879 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
880 rmdemux->offset = rmdemux->index_offset;
883 case RMDEMUX_LOOP_STATE_INDEX:
884 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
885 if (rmdemux->index_offset == 0) {
886 /* We've read the last index */
887 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
888 rmdemux->offset = rmdemux->data_offset;
889 GST_OBJECT_LOCK (rmdemux);
890 rmdemux->running = TRUE;
891 GST_OBJECT_UNLOCK (rmdemux);
893 /* Get the next index */
894 rmdemux->offset = rmdemux->index_offset;
898 case RMDEMUX_LOOP_STATE_DATA:
907 const gchar *reason = gst_flow_get_name (ret);
909 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
910 rmdemux->segment_running = FALSE;
911 gst_pad_pause_task (rmdemux->sinkpad);
913 if (ret == GST_FLOW_EOS) {
914 /* perform EOS logic */
915 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
918 /* for segment playback we need to post when (in stream time)
919 * we stopped, this is either stop (when set) or the duration. */
920 if ((stop = rmdemux->segment.stop) == -1)
921 stop = rmdemux->segment.duration;
923 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
924 gst_element_post_message (GST_ELEMENT (rmdemux),
925 gst_message_new_segment_done (GST_OBJECT (rmdemux),
926 GST_FORMAT_TIME, stop));
928 /* normal playback, send EOS to all linked pads */
929 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
930 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
932 } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS) {
933 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
934 (NULL), ("stream stopped, reason %s", reason));
935 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
942 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
946 for (i = 0; i < 4; i++) {
947 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
955 gst_rmdemux_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
957 GstFlowReturn ret = GST_FLOW_OK;
962 GstRMDemux *rmdemux = GST_RMDEMUX (parent);
964 if (rmdemux->base_ts == -1) {
965 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
966 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
967 GST_TIME_ARGS (rmdemux->base_ts));
970 gst_adapter_push (rmdemux->adapter, buffer);
972 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %" G_GSIZE_FORMAT,
973 gst_buffer_get_size (buffer));
976 avail = gst_adapter_available (rmdemux->adapter);
978 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
979 switch (rmdemux->state) {
980 case RMDEMUX_STATE_HEADER:
982 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
985 data = gst_adapter_map (rmdemux->adapter, HEADER_SIZE);
987 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
988 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
989 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
991 /* Sanity-check. We assume that the FOURCC is printable ASCII */
992 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
993 /* Failed. Remain in HEADER state, try again... We flush only
994 * the actual FOURCC, not the entire header, because we could
995 * need to resync anywhere at all... really, this should never
997 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
999 gst_adapter_unmap (rmdemux->adapter);
1000 gst_adapter_flush (rmdemux->adapter, 4);
1005 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1007 " size=%08x object_version=%d",
1008 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1009 rmdemux->object_version);
1011 gst_adapter_unmap (rmdemux->adapter);
1012 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1014 switch (rmdemux->object_id) {
1015 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1016 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1018 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1019 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1021 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1022 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1024 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1025 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1027 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1028 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1030 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1031 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1034 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1039 case RMDEMUX_STATE_HEADER_UNKNOWN:
1041 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1044 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1045 GST_FOURCC_ARGS (rmdemux->object_id));
1047 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1048 rmdemux->state = RMDEMUX_STATE_HEADER;
1051 case RMDEMUX_STATE_HEADER_RMF:
1053 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1056 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1057 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1058 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1059 gst_adapter_unmap (rmdemux->adapter);
1060 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1062 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1064 rmdemux->state = RMDEMUX_STATE_HEADER;
1067 case RMDEMUX_STATE_HEADER_PROP:
1069 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1072 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1073 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1074 gst_adapter_unmap (rmdemux->adapter);
1075 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1077 rmdemux->state = RMDEMUX_STATE_HEADER;
1080 case RMDEMUX_STATE_HEADER_MDPR:
1082 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1085 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1086 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1087 gst_adapter_unmap (rmdemux->adapter);
1088 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1090 rmdemux->state = RMDEMUX_STATE_HEADER;
1093 case RMDEMUX_STATE_HEADER_CONT:
1095 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1098 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1099 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1100 gst_adapter_unmap (rmdemux->adapter);
1101 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1103 rmdemux->state = RMDEMUX_STATE_HEADER;
1106 case RMDEMUX_STATE_HEADER_DATA:
1108 /* If we haven't already done so then signal there are no more pads */
1109 if (!rmdemux->have_pads) {
1110 GST_LOG_OBJECT (rmdemux, "no more pads");
1111 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1112 rmdemux->have_pads = TRUE;
1115 /* The actual header is only 8 bytes */
1116 rmdemux->size = DATA_SIZE;
1117 GST_LOG_OBJECT (rmdemux, "data available %" G_GSIZE_FORMAT,
1118 gst_adapter_available (rmdemux->adapter));
1119 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1122 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1123 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1124 gst_adapter_unmap (rmdemux->adapter);
1125 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1127 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1130 case RMDEMUX_STATE_HEADER_INDX:
1132 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1135 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1136 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1137 /* Only flush the header */
1138 gst_adapter_unmap (rmdemux->adapter);
1139 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1141 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1144 case RMDEMUX_STATE_INDX_DATA:
1146 /* There's not always an data to get... */
1147 if (rmdemux->size > 0) {
1148 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1151 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1152 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1153 gst_adapter_unmap (rmdemux->adapter);
1154 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1157 rmdemux->state = RMDEMUX_STATE_HEADER;
1160 case RMDEMUX_STATE_DATA_PACKET:
1164 if (gst_adapter_available (rmdemux->adapter) < 2)
1167 gst_adapter_copy (rmdemux->adapter, header, 0, 2);
1168 version = RMDEMUX_GUINT16_GET (header);
1169 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1171 if (version == 0 || version == 1) {
1174 if (gst_adapter_available (rmdemux->adapter) < 4)
1177 gst_adapter_copy (rmdemux->adapter, header, 0, 4);
1179 length = RMDEMUX_GUINT16_GET (header + 2);
1180 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1183 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1184 /* Invalid, just drop it */
1185 gst_adapter_flush (rmdemux->adapter, 4);
1189 avail = gst_adapter_available (rmdemux->adapter);
1193 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1196 /* flush version and length */
1197 gst_adapter_flush (rmdemux->adapter, 4);
1200 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1202 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1203 rmdemux->chunk_index++;
1206 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1207 rmdemux->state = RMDEMUX_STATE_HEADER;
1210 gst_adapter_flush (rmdemux->adapter, 2);
1212 if (rmdemux->data_offset == 0) {
1213 GST_LOG_OBJECT (rmdemux,
1214 "No further data, internal demux state EOS");
1215 rmdemux->state = RMDEMUX_STATE_EOS;
1217 rmdemux->state = RMDEMUX_STATE_HEADER;
1221 case RMDEMUX_STATE_EOS:
1222 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1225 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1234 static GstRMDemuxStream *
1235 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1239 for (cur = rmdemux->streams; cur; cur = cur->next) {
1240 GstRMDemuxStream *stream = cur->data;
1242 if (stream->id == id) {
1251 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1255 for (cur = rmdemux->streams; cur; cur = cur->next) {
1256 GstRMDemuxStream *stream = cur->data;
1258 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1259 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1261 switch (GST_EVENT_TYPE (event)) {
1262 case GST_EVENT_FLUSH_STOP:
1263 stream->last_ts = -1;
1264 stream->next_ts = -1;
1265 stream->last_seq = -1;
1266 stream->next_seq = -1;
1267 stream->last_flow = GST_FLOW_OK;
1272 gst_event_ref (event);
1273 gst_pad_push_event (stream->pad, event);
1275 gst_event_unref (event);
1279 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1281 GstCaps *stream_caps = NULL;
1282 const gchar *codec_tag = NULL;
1283 gchar *codec_name = NULL;
1286 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1287 char *name = g_strdup_printf ("video_%u", rmdemux->n_video_streams);
1290 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1293 codec_tag = GST_TAG_VIDEO_CODEC;
1295 switch (stream->fourcc) {
1296 case GST_RM_VDO_RV10:
1299 case GST_RM_VDO_RV20:
1302 case GST_RM_VDO_RV30:
1305 case GST_RM_VDO_RV40:
1309 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1310 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1311 GST_WARNING_OBJECT (rmdemux,
1312 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1313 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1318 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1320 "format", G_TYPE_INT,
1321 (int) stream->format,
1322 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1326 gst_caps_set_simple (stream_caps,
1327 "width", G_TYPE_INT, stream->width,
1328 "height", G_TYPE_INT, stream->height,
1329 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1330 stream->framerate_denominator, NULL);
1332 rmdemux->n_video_streams++;
1334 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1335 char *name = g_strdup_printf ("audio_%u", rmdemux->n_audio_streams);
1338 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1339 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1342 codec_tag = GST_TAG_AUDIO_CODEC;
1344 switch (stream->fourcc) {
1345 /* Older RealAudio Codecs */
1346 case GST_RM_AUD_14_4:
1350 case GST_RM_AUD_28_8:
1354 /* DolbyNet (Dolby AC3, low bitrate) */
1355 case GST_RM_AUD_DNET:
1357 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1358 (int) stream->rate, NULL);
1359 stream->needs_descrambling = TRUE;
1360 stream->subpackets_needed = 1;
1361 stream->subpackets = NULL;
1365 case GST_RM_AUD_RAAC:
1366 case GST_RM_AUD_RACP:
1368 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1369 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1370 if (stream->extra_data_size > 0) {
1371 /* strip off an unknown byte in the extra data */
1372 stream->extra_data_size--;
1373 stream->extra_data++;
1375 stream->needs_descrambling = TRUE;
1376 stream->subpackets_needed = 1;
1377 stream->subpackets = NULL;
1381 case GST_RM_AUD_ATRC:
1382 stream_caps = gst_caps_new_empty_simple ("audio/x-vnd.sony.atrac3");
1383 stream->needs_descrambling = TRUE;
1384 stream->subpackets_needed = stream->height;
1385 stream->subpackets = NULL;
1388 /* RealAudio G2 audio */
1389 case GST_RM_AUD_COOK:
1391 stream->needs_descrambling = TRUE;
1392 stream->subpackets_needed = stream->height;
1393 stream->subpackets = NULL;
1396 /* RALF is lossless */
1397 case GST_RM_AUD_RALF:
1398 GST_DEBUG_OBJECT (rmdemux, "RALF");
1399 stream_caps = gst_caps_new_empty_simple ("audio/x-ralf-mpeg4-generic");
1402 case GST_RM_AUD_SIPR:
1404 if (stream->flavor > 3) {
1405 GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
1411 GST_DEBUG_OBJECT (rmdemux, "SIPR");
1412 stream_caps = gst_caps_new_empty_simple ("audio/x-sipro");
1413 stream->needs_descrambling = TRUE;
1414 stream->subpackets_needed = stream->height;
1415 stream->subpackets = NULL;
1416 stream->leaf_size = sipr_subpk_size[stream->flavor];
1421 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1422 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1423 GST_WARNING_OBJECT (rmdemux,
1424 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1425 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1431 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1432 (int) version, NULL);
1436 gst_caps_set_simple (stream_caps,
1437 "flavor", G_TYPE_INT, (int) stream->flavor,
1438 "rate", G_TYPE_INT, (int) stream->rate,
1439 "channels", G_TYPE_INT, (int) stream->n_channels,
1440 "width", G_TYPE_INT, (int) stream->sample_width,
1441 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1442 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1443 "bitrate", G_TYPE_INT, (int) stream->bitrate,
1444 "height", G_TYPE_INT, (int) stream->height, NULL);
1446 rmdemux->n_audio_streams++;
1448 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1454 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1455 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1456 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1457 g_slist_length (rmdemux->streams));
1459 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1462 if (stream->pad && stream_caps) {
1464 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1465 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1467 /* add codec_data if there is any */
1468 if (stream->extra_data_size > 0) {
1471 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1472 gst_buffer_fill (buffer, 0, stream->extra_data, stream->extra_data_size);
1474 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1477 gst_buffer_unref (buffer);
1480 gst_pad_use_fixed_caps (stream->pad);
1482 gst_pad_set_caps (stream->pad, stream_caps);
1483 gst_pad_set_event_function (stream->pad,
1484 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1485 gst_pad_set_query_function (stream->pad,
1486 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1488 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1489 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1490 gst_pad_set_active (stream->pad, TRUE);
1491 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1493 codec_name = gst_pb_utils_get_codec_description (stream_caps);
1495 /* save for later, we must send the tags after the newsegment event */
1496 if (codec_tag != NULL && codec_name != NULL) {
1497 if (stream->pending_tags == NULL)
1498 stream->pending_tags = gst_tag_list_new_empty ();
1499 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1500 codec_tag, codec_name, NULL);
1501 g_free (codec_name);
1508 gst_caps_unref (stream_caps);
1512 re_skip_pascal_string (const guint8 * ptr)
1522 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1524 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1525 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1529 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1531 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1532 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1533 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1534 RMDEMUX_GUINT32_GET (data + 8));
1535 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1536 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1537 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1538 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1540 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1541 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1543 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1544 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1545 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1546 rmdemux->index_offset);
1547 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1548 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1549 rmdemux->data_offset);
1550 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1551 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1555 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1557 GstRMDemuxStream *stream;
1558 char *stream1_type_string;
1559 char *stream2_type_string;
1563 guint32 max_bitrate;
1564 guint32 avg_bitrate;
1566 stream = g_new0 (GstRMDemuxStream, 1);
1568 stream->id = RMDEMUX_GUINT16_GET (data);
1569 stream->index = NULL;
1570 stream->seek_offset = 0;
1571 stream->last_ts = -1;
1572 stream->next_ts = -1;
1573 stream->last_flow = GST_FLOW_OK;
1574 stream->discont = TRUE;
1575 stream->adapter = gst_adapter_new ();
1576 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1578 /* parse the bitrates */
1579 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1580 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1581 stream->bitrate = avg_bitrate;
1582 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1583 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1584 if (max_bitrate != 0) {
1585 if (stream->pending_tags == NULL)
1586 stream->pending_tags = gst_tag_list_new_empty ();
1587 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1588 GST_TAG_MAXIMUM_BITRATE, max_bitrate, NULL);
1590 if (avg_bitrate != 0) {
1591 if (stream->pending_tags == NULL)
1592 stream->pending_tags = gst_tag_list_new_empty ();
1593 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1594 GST_TAG_BITRATE, avg_bitrate, NULL);
1598 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1599 length - offset, &str_len);
1601 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1602 length - offset, &str_len);
1605 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1607 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1608 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1610 * so, we should not rely on it to know which stream type it is
1613 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1614 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1616 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1617 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1618 } else if (strcmp (stream2_type_string,
1619 "video/x-pn-multirate-realvideo") == 0) {
1620 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1621 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1622 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1623 } else if (strcmp (stream2_type_string,
1624 "audio/x-pn-multirate-realaudio") == 0) {
1625 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1626 } else if (strcmp (stream2_type_string,
1627 "audio/x-pn-multirate-realaudio-live") == 0) {
1628 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1629 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1630 /* Another audio type found in the real testsuite */
1631 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1632 } else if (strcmp (stream1_type_string, "") == 0 &&
1633 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1634 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1636 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1637 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1638 stream1_type_string, stream2_type_string);
1640 g_free (stream1_type_string);
1641 g_free (stream2_type_string);
1645 stream->subtype = stream_type;
1646 switch (stream_type) {
1648 case GST_RMDEMUX_STREAM_VIDEO:
1649 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1650 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1651 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1652 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1653 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1654 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1655 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1656 stream->extra_data_size = length - (offset + 26);
1657 stream->extra_data = (guint8 *) data + offset + 26;
1658 /* Natural way to represent framerates here requires unsigned 32 bit
1659 * numerator, which we don't have. For the nasty case, approximate...
1662 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1663 RMDEMUX_GUINT16_GET (data + offset + 24);
1664 if (numerator > G_MAXINT) {
1665 stream->framerate_numerator = (gint) (numerator >> 1);
1666 stream->framerate_denominator = 32768;
1668 stream->framerate_numerator = (gint) numerator;
1669 stream->framerate_denominator = 65536;
1673 GST_DEBUG_OBJECT (rmdemux,
1674 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1675 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1676 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1677 stream->rate, stream->framerate_numerator,
1678 stream->framerate_denominator, stream->subformat, stream->format,
1679 stream->extra_data_size);
1681 case GST_RMDEMUX_STREAM_AUDIO:{
1682 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1683 GST_INFO ("stream version = %u", stream->version);
1684 switch (stream->version) {
1686 stream->fourcc = GST_RM_AUD_14_4;
1687 stream->packet_size = 20;
1688 stream->rate = 8000;
1689 stream->n_channels = 1;
1690 stream->sample_width = 16;
1692 stream->leaf_size = 0;
1696 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1697 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1698 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1699 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1700 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1701 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1702 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1703 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1704 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1705 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1706 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1707 stream->extra_data_size);
1708 if (length - (offset + 73) >= stream->extra_data_size) {
1709 stream->extra_data = (guint8 *) data + offset + 73;
1711 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1712 stream->extra_data_size = 0;
1716 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1717 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1718 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1719 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1720 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1721 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1722 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1723 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1724 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1725 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1726 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1727 stream->extra_data_size);
1728 if (length - (offset + 78) >= stream->extra_data_size) {
1729 stream->extra_data = (guint8 *) data + offset + 78;
1731 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1732 stream->extra_data_size = 0;
1736 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1741 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1742 GST_DEBUG_OBJECT (rmdemux,
1743 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1744 stream->rate, stream->sample_width, stream->n_channels);
1748 case GST_RMDEMUX_STREAM_FILEINFO:
1752 /* Length of this section */
1753 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1754 RMDEMUX_GUINT32_GET (data + offset));
1757 /* Unknown : 00 00 00 00 */
1760 /* Number of variables that would follow (loop iterations) */
1761 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1764 while (element_nb) {
1765 /* Category Id : 00 00 00 XX 00 00 */
1769 offset += re_skip_pascal_string (data + offset);
1771 /* Variable Value Type */
1772 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1773 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1776 /* Variable Value */
1777 offset += re_skip_pascal_string (data + offset);
1783 case GST_RMDEMUX_STREAM_UNKNOWN:
1788 gst_rmdemux_add_stream (rmdemux, stream);
1792 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1797 n = RMDEMUX_GUINT32_GET (data);
1798 id = RMDEMUX_GUINT16_GET (data + 4);
1799 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1801 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1804 /* Point to the next index_stream */
1805 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1807 /* Return the length of the index */
1812 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1817 GstRMDemuxIndex *index;
1819 /* The number of index records */
1822 if (rmdemux->index_stream == NULL)
1825 /* don't parse the index a second time when operating pull-based and
1826 * reaching the end of the file */
1827 if (rmdemux->index_stream->index_length > 0) {
1828 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1832 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1833 rmdemux->index_stream->index = index;
1834 rmdemux->index_stream->index_length = n;
1836 for (i = 0; i < n; i++) {
1837 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1838 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1840 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1841 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1848 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1850 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1851 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1852 rmdemux->chunk_index = 0;
1853 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1854 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1858 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1862 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1864 GST_LOG_OBJECT (rmdemux, "tags: %" GST_PTR_FORMAT, tags);
1866 rmdemux->pending_tags =
1867 gst_tag_list_merge (rmdemux->pending_tags, tags, GST_TAG_MERGE_APPEND);
1870 static GstFlowReturn
1871 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1876 /* store the value */
1877 stream->last_flow = ret;
1879 /* if it's success we can return the value right away */
1880 if (ret == GST_FLOW_OK)
1883 /* any other error that is not-linked can be returned right
1885 if (ret != GST_FLOW_NOT_LINKED)
1888 for (cur = rmdemux->streams; cur; cur = cur->next) {
1889 GstRMDemuxStream *ostream = cur->data;
1891 ret = ostream->last_flow;
1892 /* some other return value (must be SUCCESS but we can return
1893 * other values as well) */
1894 if (ret != GST_FLOW_NOT_LINKED)
1897 /* if we get here, all other pads were unlinked and we return
1898 * NOT_LINKED then */
1904 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1905 GstRMDemuxStream * stream)
1907 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1910 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1911 stream->subpackets->len);
1912 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1913 g_ptr_array_set_size (stream->subpackets, 0);
1916 static GstFlowReturn
1917 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1919 GstFlowReturn ret = GST_FLOW_ERROR;
1922 guint packet_size = stream->packet_size;
1923 guint height = stream->subpackets->len;
1924 guint leaf_size = stream->leaf_size;
1927 g_assert (stream->height == height);
1929 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1932 outbuf = gst_buffer_new_and_alloc (height * packet_size);
1933 outdata = gst_buffer_map (outbuf, NULL, NULL, GST_MAP_WRITE);
1935 for (p = 0; p < height; ++p) {
1936 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1937 guint8 *b_data = gst_buffer_map (b, NULL, NULL, GST_MAP_READ);
1940 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1942 for (x = 0; x < packet_size / leaf_size; ++x) {
1945 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1947 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1948 memcpy (outdata + leaf_size * idx, b_data + leaf_size * x, leaf_size);
1950 gst_buffer_unmap (b, b_data, -1);
1952 gst_buffer_unmap (outbuf, outdata, -1);
1954 /* some decoders, such as realaudiodec, need to be fed in packet units */
1955 for (p = 0; p < height; ++p) {
1959 gst_buffer_copy_region (outbuf, GST_BUFFER_COPY_ALL, p * packet_size,
1962 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1963 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1965 if (stream->discont) {
1966 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1967 stream->discont = FALSE;
1970 ret = gst_pad_push (stream->pad, subbuf);
1971 if (ret != GST_FLOW_OK)
1975 gst_buffer_unref (outbuf);
1977 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1982 static GstFlowReturn
1983 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1984 GstRMDemuxStream * stream)
1988 buf = g_ptr_array_index (stream->subpackets, 0);
1989 g_ptr_array_index (stream->subpackets, 0) = NULL;
1990 g_ptr_array_set_size (stream->subpackets, 0);
1992 buf = gst_rm_utils_descramble_dnet_buffer (buf);
1994 if (stream->discont) {
1995 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
1996 stream->discont = FALSE;
1998 return gst_pad_push (stream->pad, buf);
2001 static GstFlowReturn
2002 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
2003 GstRMDemuxStream * stream)
2006 GstBuffer *buf, *outbuf;
2007 guint frames, index, i;
2009 GstClockTime timestamp;
2013 buf = g_ptr_array_index (stream->subpackets, 0);
2014 g_ptr_array_index (stream->subpackets, 0) = NULL;
2015 g_ptr_array_set_size (stream->subpackets, 0);
2017 data = gst_buffer_map (buf, NULL, NULL, GST_MAP_READ);
2018 timestamp = GST_BUFFER_TIMESTAMP (buf);
2020 frames = (data[1] & 0xf0) >> 4;
2021 index = 2 * frames + 2;
2023 for (i = 0; i < frames; i++) {
2024 guint len = (data[i * 2 + 2] << 8) | data[i * 2 + 3];
2026 outbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, index, len);
2028 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2032 if (stream->discont) {
2033 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2034 stream->discont = FALSE;
2036 res = gst_pad_push (stream->pad, outbuf);
2037 if (res != GST_FLOW_OK)
2040 gst_buffer_unmap (buf, data, -1);
2041 gst_buffer_unref (buf);
2045 static GstFlowReturn
2046 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2047 GstRMDemuxStream * stream)
2052 guint packet_size = stream->packet_size;
2053 guint height = stream->subpackets->len;
2056 g_assert (stream->height == height);
2058 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2059 stream->leaf_size, height);
2061 outbuf = gst_buffer_new_and_alloc (height * packet_size);
2062 outdata = gst_buffer_map (outbuf, NULL, NULL, GST_MAP_WRITE);
2064 for (p = 0; p < height; ++p) {
2065 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2068 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
2070 gst_buffer_extract (b, 0, outdata + packet_size * p, packet_size);
2072 gst_buffer_unmap (outbuf, outdata, -1);
2074 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
2075 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
2077 if (stream->discont) {
2078 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2079 stream->discont = FALSE;
2082 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2084 ret = gst_pad_push (stream->pad, outbuf);
2086 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2091 static GstFlowReturn
2092 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2093 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2097 if (stream->subpackets == NULL)
2098 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2100 GST_LOG ("Got subpacket %u/%u, len=%" G_GSIZE_FORMAT ", key=%d",
2101 stream->subpackets->len + 1, stream->subpackets_needed,
2102 gst_buffer_get_size (buf), keyframe);
2104 if (keyframe && stream->subpackets->len > 0) {
2105 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2108 g_ptr_array_add (stream->subpackets, buf);
2110 if (stream->subpackets->len < stream->subpackets_needed)
2113 g_assert (stream->subpackets->len >= 1);
2115 switch (stream->fourcc) {
2116 case GST_RM_AUD_DNET:
2117 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2119 case GST_RM_AUD_COOK:
2120 case GST_RM_AUD_ATRC:
2121 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2123 case GST_RM_AUD_RAAC:
2124 case GST_RM_AUD_RACP:
2125 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2127 case GST_RM_AUD_SIPR:
2128 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2131 g_assert_not_reached ();
2138 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2139 guint8 * data, GstClockTime timestamp)
2143 GstClockTime ts = timestamp;
2145 if (timestamp == GST_CLOCK_TIME_NONE)
2148 /* only adjust when we have a stream with B frames */
2149 if (stream->format < 0x20200002)
2152 /* Fix timestamp. */
2153 switch (stream->fourcc) {
2154 case GST_RM_VDO_RV10:
2156 case GST_RM_VDO_RV20:
2159 * Bit 1- 2: frame type
2161 * Bit 10-22: sequence number
2164 frame_type = (data[0] >> 6) & 0x03;
2165 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2168 case GST_RM_VDO_RV30:
2172 * Bit 3: skip packet if 1
2173 * Bit 4- 5: frame type
2175 * Bit 13-25: sequence number
2178 frame_type = (data[0] >> 3) & 0x03;
2179 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2182 case GST_RM_VDO_RV40:
2185 * Bit 1: skip packet if 1
2186 * Bit 2- 3: frame type
2188 * Bit 14-26: sequence number
2191 frame_type = (data[0] >> 5) & 0x03;
2192 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2196 goto unknown_version;
2199 switch (frame_type) {
2203 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2205 if (stream->next_ts == -1)
2206 stream->next_ts = timestamp;
2208 timestamp = stream->next_ts;
2209 stream->last_ts = stream->next_ts;
2210 stream->next_ts = ts;
2211 stream->last_seq = stream->next_seq;
2212 stream->next_seq = seq;
2217 GST_LOG_OBJECT (rmdemux, "P frame");
2219 timestamp = stream->last_ts = stream->next_ts;
2220 if (seq < stream->next_seq)
2221 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2223 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2224 stream->last_seq = stream->next_seq;
2225 stream->next_seq = seq;
2230 GST_LOG_OBJECT (rmdemux, "B frame");
2232 if (seq < stream->last_seq) {
2234 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2236 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2241 goto unknown_frame_type;
2245 GST_LOG_OBJECT (rmdemux,
2246 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2247 GST_TIME_ARGS (timestamp));
2254 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2255 ("Unknown version: %i.", stream->version), (NULL));
2256 return GST_FLOW_ERROR;
2261 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2262 frame_type), (NULL));
2263 return GST_FLOW_ERROR;
2267 #define PARSE_NUMBER(data, size, number, label) \
2271 number = GST_READ_UINT16_BE (data); \
2272 if (!(number & 0xc000)) { \
2275 number = GST_READ_UINT32_BE (data); \
2285 static GstFlowReturn
2286 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2287 GstBuffer * in, guint offset, guint16 version,
2288 GstClockTime timestamp, gboolean key)
2295 base = gst_buffer_map (in, &size, NULL, GST_MAP_READ);
2297 data = base + offset;
2300 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2301 * was previously for that given stream. */
2302 ret = stream->last_flow;
2308 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2309 guint fragment_size;
2310 GstBuffer *fragment;
2312 pkg_header = *data++;
2316 * bit 7: 1=last block in block chain
2317 * bit 6: 1=short header (only one block?)
2319 if ((pkg_header & 0xc0) == 0x40) {
2320 /* skip unknown byte */
2326 if ((pkg_header & 0x40) == 0) {
2327 pkg_subseq = (*data++) & 0x7f;
2334 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2337 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2341 goto not_enough_data;
2343 pkg_seqnum = *data++;
2347 GST_DEBUG_OBJECT (rmdemux,
2348 "seq %d, subseq %d, offset %d, length %d, size %" G_GSIZE_FORMAT
2349 ", header %02x", pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size,
2352 /* calc size of fragment */
2353 if ((pkg_header & 0xc0) == 0x80) {
2354 fragment_size = pkg_offset;
2356 if ((pkg_header & 0xc0) == 0)
2357 fragment_size = size;
2359 fragment_size = pkg_length;
2361 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2363 /* get the fragment */
2365 gst_buffer_copy_region (in, GST_BUFFER_COPY_ALL, data - base,
2368 if (pkg_subseq == 1) {
2369 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2370 gst_adapter_clear (stream->adapter);
2371 stream->frag_current = 0;
2372 stream->frag_count = 0;
2373 stream->frag_length = pkg_length;
2374 } else if (pkg_subseq == 0) {
2375 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2376 stream->frag_current = 0;
2377 stream->frag_count = 0;
2378 stream->frag_length = fragment_size;
2381 /* put fragment in adapter */
2382 gst_adapter_push (stream->adapter, fragment);
2383 stream->frag_offset[stream->frag_count] = stream->frag_current;
2384 stream->frag_current += fragment_size;
2385 stream->frag_count++;
2387 if (stream->frag_count > MAX_FRAGS)
2388 goto too_many_fragments;
2390 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2391 stream->frag_current, stream->frag_length);
2393 /* flush fragment when complete */
2394 if (stream->frag_current >= stream->frag_length) {
2396 guint8 *outdata, *outbase;
2400 /* calculate header size, which is:
2401 * 1 byte for the number of fragments - 1
2402 * for each fragment:
2403 * 4 bytes 0x00000001 little endian
2404 * 4 bytes fragment offset
2406 * This is also the matroska header for realvideo, the decoder needs the
2407 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2408 * in front of the data.
2410 header_size = 1 + (8 * (stream->frag_count));
2412 GST_DEBUG_OBJECT (rmdemux,
2413 "fragmented completed. count %d, header_size %u", stream->frag_count,
2416 avail = gst_adapter_available (stream->adapter);
2418 out = gst_buffer_new_and_alloc (header_size + avail);
2419 outbase = gst_buffer_map (out, NULL, NULL, GST_MAP_WRITE);
2423 *outdata++ = stream->frag_count - 1;
2424 for (i = 0; i < stream->frag_count; i++) {
2425 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2427 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2431 /* copy packet data after the header now */
2432 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2433 gst_adapter_flush (stream->adapter, avail);
2435 stream->frag_current = 0;
2436 stream->frag_count = 0;
2437 stream->frag_length = 0;
2439 if (timestamp != -1) {
2440 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2441 timestamp -= rmdemux->first_ts;
2445 if (rmdemux->base_ts != -1)
2446 timestamp += rmdemux->base_ts;
2449 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2451 gst_buffer_unmap (out, outbase, -1);
2453 GST_BUFFER_TIMESTAMP (out) = timestamp;
2455 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2456 GST_TIME_ARGS (timestamp));
2458 if (stream->discont) {
2459 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2460 stream->discont = FALSE;
2464 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DELTA_UNIT);
2467 ret = gst_pad_push (stream->pad, out);
2468 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2469 if (ret != GST_FLOW_OK)
2472 timestamp = GST_CLOCK_TIME_NONE;
2474 data += fragment_size;
2475 size -= fragment_size;
2477 GST_DEBUG_OBJECT (rmdemux, "%" G_GSIZE_FORMAT " bytes left", size);
2480 gst_buffer_unmap (in, base, -1);
2481 gst_buffer_unref (in);
2488 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2495 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2496 ("Got more fragments (%u) than can be handled (%u)",
2497 stream->frag_count, MAX_FRAGS), (NULL));
2498 ret = GST_FLOW_ERROR;
2503 static GstFlowReturn
2504 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2505 GstBuffer * in, guint offset, guint16 version,
2506 GstClockTime timestamp, gboolean key)
2511 buffer = gst_buffer_copy_region (in, GST_BUFFER_COPY_MEMORY, offset, -1);
2513 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2514 timestamp -= rmdemux->first_ts;
2518 if (rmdemux->base_ts != -1)
2519 timestamp += rmdemux->base_ts;
2521 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2523 if (stream->needs_descrambling) {
2524 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2525 GST_TIME_ARGS (timestamp));
2526 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2528 GST_LOG_OBJECT (rmdemux,
2529 "Pushing buffer of size %" G_GSIZE_FORMAT ", timestamp %"
2530 GST_TIME_FORMAT "to pad %s", gst_buffer_get_size (buffer),
2531 GST_TIME_ARGS (timestamp), GST_PAD_NAME (stream->pad));
2533 if (stream->discont) {
2534 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2535 stream->discont = FALSE;
2537 ret = gst_pad_push (stream->pad, buffer);
2540 gst_buffer_unref (in);
2545 static GstFlowReturn
2546 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2549 GstRMDemuxStream *stream;
2551 GstFlowReturn cret, ret;
2552 GstClockTime timestamp;
2554 guint8 *data, *base;
2558 base = data = gst_buffer_map (in, &size, NULL, GST_MAP_READ);
2561 id = RMDEMUX_GUINT16_GET (data);
2563 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2564 if (!stream || !stream->pad)
2565 goto unknown_stream;
2567 /* timestamp in Msec */
2568 ts = RMDEMUX_GUINT32_GET (data + 2);
2569 timestamp = ts * GST_MSECOND;
2571 rmdemux->segment.position = timestamp;
2573 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2574 GST_TIME_FORMAT ", size %" G_GSIZE_FORMAT ", version=%d, ts=%u", id,
2575 GST_TIME_ARGS (timestamp), size, version, ts);
2577 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2578 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2579 GST_TIME_ARGS (timestamp));
2580 rmdemux->first_ts = timestamp;
2583 /* skip stream_id and timestamp */
2588 flags = GST_READ_UINT8 (data + 1);
2593 /* version 1 has an extra byte */
2598 offset = data - base;
2599 gst_buffer_unmap (in, base, -1);
2601 key = (flags & 0x02) != 0;
2602 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2604 if (rmdemux->need_newsegment) {
2607 event = gst_event_new_segment (&rmdemux->segment);
2609 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2610 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2612 gst_rmdemux_send_event (rmdemux, event);
2613 rmdemux->need_newsegment = FALSE;
2615 if (rmdemux->pending_tags != NULL) {
2616 gst_rmdemux_send_event (rmdemux,
2617 gst_event_new_tag (rmdemux->pending_tags));
2618 rmdemux->pending_tags = NULL;
2622 if (stream->pending_tags != NULL) {
2623 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2624 gst_pad_push_event (stream->pad, gst_event_new_tag (stream->pending_tags));
2625 stream->pending_tags = NULL;
2628 if ((rmdemux->offset + size) <= stream->seek_offset) {
2629 GST_DEBUG_OBJECT (rmdemux,
2630 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%"
2631 G_GSIZE_FORMAT, stream->id, stream->seek_offset, rmdemux->offset, size);
2633 gst_buffer_unref (in);
2637 /* do special headers */
2638 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2640 gst_rmdemux_parse_video_packet (rmdemux, stream, in, offset,
2641 version, timestamp, key);
2642 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2644 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, offset,
2645 version, timestamp, key);
2647 gst_buffer_unref (in);
2651 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2659 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2661 gst_buffer_unmap (in, base, -1);
2662 gst_buffer_unref (in);
2668 gst_rmdemux_plugin_init (GstPlugin * plugin)
2670 return gst_element_register (plugin, "rmdemux",
2671 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);