1 /* GStreamer RealMedia demuxer
2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2003> David A. Schleef <ds@schleef.org>
4 * Copyright (C) <2004> Stephane Loeuillet <gstreamer@leroutier.net>
5 * Copyright (C) <2005> Owen Fraser-Green <owen@discobabe.net>
6 * Copyright (C) <2005> Michael Smith <fluendo.com>
7 * Copyright (C) <2006> Wim Taymans <wim@fluendo.com>
8 * Copyright (C) <2006> Tim-Philipp Müller <tim centricular net>
9 * Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Library General Public
13 * License as published by the Free Software Foundation; either
14 * version 2 of the License, or (at your option) any later version.
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Library General Public License for more details.
21 * You should have received a copy of the GNU Library General Public
22 * License along with this library; if not, write to the
23 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 * Boston, MA 02111-1307, USA.
37 #define RMDEMUX_GUINT32_GET(a) GST_READ_UINT32_BE(a)
38 #define RMDEMUX_GUINT16_GET(a) GST_READ_UINT16_BE(a)
39 #define RMDEMUX_FOURCC_GET(a) GST_READ_UINT32_LE(a)
40 #define HEADER_SIZE 10
45 static const guint8 sipr_subpk_size[4] = { 29, 19, 37, 20 };
47 typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
49 struct _GstRMDemuxStream
58 GstFlowReturn last_flow;
63 GstRMDemuxIndex *index;
65 gint framerate_numerator;
66 gint framerate_denominator;
72 guint16 rate; /* samplerate */
73 guint16 n_channels; /* channels */
74 guint16 sample_width; /* bits_per_sample */
75 guint16 leaf_size; /* subpacket_size */
76 guint32 packet_size; /* coded_frame_size */
78 guint32 extra_data_size; /* codec_data_length */
79 guint8 *extra_data; /* extras */
82 gboolean needs_descrambling;
83 guint subpackets_needed; /* subpackets needed for descrambling */
84 GPtrArray *subpackets; /* array containing subpacket GstBuffers */
86 /* Variables needed for fixing timestamps. */
87 GstClockTime next_ts, last_ts;
88 guint16 next_seq, last_seq;
95 guint frag_offset[MAX_FRAGS];
98 GstTagList *pending_tags;
101 struct _GstRMDemuxIndex
104 GstClockTime timestamp;
107 static GstStaticPadTemplate gst_rmdemux_sink_template =
108 GST_STATIC_PAD_TEMPLATE ("sink",
111 GST_STATIC_CAPS ("application/vnd.rn-realmedia")
114 static GstStaticPadTemplate gst_rmdemux_videosrc_template =
115 GST_STATIC_PAD_TEMPLATE ("video_%u",
118 GST_STATIC_CAPS_ANY);
120 static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
121 GST_STATIC_PAD_TEMPLATE ("audio_%u",
124 GST_STATIC_CAPS_ANY);
126 GST_DEBUG_CATEGORY_STATIC (rmdemux_debug);
127 #define GST_CAT_DEFAULT rmdemux_debug
129 static GstElementClass *parent_class = NULL;
131 static void gst_rmdemux_class_init (GstRMDemuxClass * klass);
132 static void gst_rmdemux_base_init (GstRMDemuxClass * klass);
133 static void gst_rmdemux_init (GstRMDemux * rmdemux);
134 static void gst_rmdemux_finalize (GObject * object);
135 static GstStateChangeReturn gst_rmdemux_change_state (GstElement * element,
136 GstStateChange transition);
137 static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer);
138 static void gst_rmdemux_loop (GstPad * pad);
139 static gboolean gst_rmdemux_sink_activate (GstPad * sinkpad);
140 static gboolean gst_rmdemux_sink_activate_push (GstPad * sinkpad,
142 static gboolean gst_rmdemux_sink_activate_pull (GstPad * sinkpad,
144 static gboolean gst_rmdemux_sink_event (GstPad * pad, GstEvent * event);
145 static gboolean gst_rmdemux_src_event (GstPad * pad, GstEvent * event);
146 static void gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event);
147 static gboolean gst_rmdemux_src_query (GstPad * pad, GstQuery * query);
148 static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux,
151 static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data,
153 static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data,
155 static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux,
156 const guint8 * data, int length);
157 static guint gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data,
159 static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data,
161 static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data,
163 static GstFlowReturn gst_rmdemux_parse_packet (GstRMDemux * rmdemux,
164 GstBuffer * in, guint16 version);
165 static void gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux,
166 const guint8 * data, int length);
167 static void gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
168 GstRMDemuxStream * stream);
169 static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
173 gst_rmdemux_get_type (void)
175 static GType rmdemux_type = 0;
178 static const GTypeInfo rmdemux_info = {
179 sizeof (GstRMDemuxClass),
180 (GBaseInitFunc) gst_rmdemux_base_init, NULL,
181 (GClassInitFunc) gst_rmdemux_class_init,
182 NULL, NULL, sizeof (GstRMDemux), 0,
183 (GInstanceInitFunc) gst_rmdemux_init,
187 g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
194 gst_rmdemux_base_init (GstRMDemuxClass * klass)
196 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
198 gst_element_class_add_pad_template (element_class,
199 gst_static_pad_template_get (&gst_rmdemux_sink_template));
200 gst_element_class_add_pad_template (element_class,
201 gst_static_pad_template_get (&gst_rmdemux_videosrc_template));
202 gst_element_class_add_pad_template (element_class,
203 gst_static_pad_template_get (&gst_rmdemux_audiosrc_template));
204 gst_element_class_set_details_simple (element_class, "RealMedia Demuxer",
206 "Demultiplex a RealMedia file into audio and video streams",
207 "David Schleef <ds@schleef.org>");
211 gst_rmdemux_class_init (GstRMDemuxClass * klass)
213 GObjectClass *gobject_class;
214 GstElementClass *gstelement_class;
216 gobject_class = (GObjectClass *) klass;
217 gstelement_class = (GstElementClass *) klass;
219 parent_class = g_type_class_peek_parent (klass);
221 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rmdemux_change_state);
223 GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
224 0, "Demuxer for Realmedia streams");
226 gobject_class->finalize = gst_rmdemux_finalize;
230 gst_rmdemux_finalize (GObject * object)
232 GstRMDemux *rmdemux = GST_RMDEMUX (object);
234 if (rmdemux->adapter) {
235 g_object_unref (rmdemux->adapter);
236 rmdemux->adapter = NULL;
239 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
243 gst_rmdemux_init (GstRMDemux * rmdemux)
246 gst_pad_new_from_static_template (&gst_rmdemux_sink_template, "sink");
247 gst_pad_set_event_function (rmdemux->sinkpad,
248 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_event));
249 gst_pad_set_chain_function (rmdemux->sinkpad,
250 GST_DEBUG_FUNCPTR (gst_rmdemux_chain));
251 gst_pad_set_activate_function (rmdemux->sinkpad,
252 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate));
253 gst_pad_set_activatepull_function (rmdemux->sinkpad,
254 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_pull));
255 gst_pad_set_activatepush_function (rmdemux->sinkpad,
256 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_push));
258 gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
260 rmdemux->adapter = gst_adapter_new ();
261 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
262 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
263 rmdemux->need_newsegment = TRUE;
265 gst_rm_utils_run_tests ();
269 gst_rmdemux_sink_event (GstPad * pad, GstEvent * event)
274 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
276 GST_LOG_OBJECT (pad, "%s event", GST_EVENT_TYPE_NAME (event));
278 switch (GST_EVENT_TYPE (event)) {
279 case GST_EVENT_SEGMENT:
280 gst_event_unref (event);
284 ret = gst_pad_event_default (pad, event);
288 gst_object_unref (rmdemux);
293 gst_rmdemux_src_event (GstPad * pad, GstEvent * event)
297 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
299 GST_LOG_OBJECT (rmdemux, "handling src event");
301 switch (GST_EVENT_TYPE (event)) {
306 GST_LOG_OBJECT (rmdemux, "Event on src: SEEK");
307 /* can't seek if we are not seekable, FIXME could pass the
308 * seek query upstream after converting it to bytes using
309 * the average bitrate of the stream. */
310 if (!rmdemux->seekable) {
312 GST_DEBUG ("seek on non seekable stream");
316 GST_OBJECT_LOCK (rmdemux);
317 /* check if we can do the seek now */
318 running = rmdemux->running;
319 GST_OBJECT_UNLOCK (rmdemux);
321 /* now do the seek */
323 ret = gst_rmdemux_perform_seek (rmdemux, event);
327 gst_event_unref (event);
331 GST_LOG_OBJECT (rmdemux, "Event on src: type=%d", GST_EVENT_TYPE (event));
332 ret = gst_pad_event_default (pad, event);
339 GST_DEBUG ("error handling event");
340 gst_event_unref (event);
344 /* Validate that this looks like a reasonable point to seek to */
346 gst_rmdemux_validate_offset (GstRMDemux * rmdemux)
349 GstFlowReturn flowret;
350 guint16 version, length;
354 flowret = gst_pad_pull_range (rmdemux->sinkpad, rmdemux->offset, 4, &buffer);
356 if (flowret != GST_FLOW_OK) {
357 GST_DEBUG_OBJECT (rmdemux, "Failed to pull data at offset %d",
361 /* TODO: Can we also be seeking to a 'DATA' chunk header? Check this.
362 * Also, for the case we currently handle, can we check any more? It's pretty
363 * sucky to not be validating a little more heavily than this... */
364 /* This should now be the start of a data packet header. That begins with
365 * a 2-byte 'version' field, which has to be 0 or 1, then a length. I'm not
366 * certain what values are valid for length, but it must always be at least
367 * 4 bytes, and we can check that it won't take us past our known total size
370 data = gst_buffer_map (buffer, NULL, NULL, GST_MAP_READ);
371 version = RMDEMUX_GUINT16_GET (data);
372 if (version != 0 && version != 1) {
373 GST_DEBUG_OBJECT (rmdemux, "Expected version 0 or 1, got %d",
378 length = RMDEMUX_GUINT16_GET (data + 2);
379 /* TODO: Also check against total stream length */
381 GST_DEBUG_OBJECT (rmdemux, "Expected length >= 4, got %d", (int) length);
384 gst_buffer_unmap (buffer, data, -1);
387 rmdemux->offset += 4;
388 gst_adapter_clear (rmdemux->adapter);
389 gst_adapter_push (rmdemux->adapter, buffer);
391 GST_WARNING_OBJECT (rmdemux, "Failed to validate seek offset at %d",
393 gst_buffer_unref (buffer);
400 find_seek_offset_bytes (GstRMDemux * rmdemux, guint target)
404 gboolean ret = FALSE;
406 for (cur = rmdemux->streams; cur; cur = cur->next) {
407 GstRMDemuxStream *stream = cur->data;
409 /* Search backwards through this stream's index until we find the first
410 * timestamp before our target time */
411 for (i = stream->index_length - 1; i >= 0; i--) {
412 if (stream->index[i].offset <= target) {
413 /* Set the seek_offset for the stream so we don't bother parsing it
414 * until we've passed that point */
415 stream->seek_offset = stream->index[i].offset;
416 rmdemux->offset = stream->index[i].offset;
426 find_seek_offset_time (GstRMDemux * rmdemux, GstClockTime time)
429 gboolean ret = FALSE;
431 GstClockTime earliest = GST_CLOCK_TIME_NONE;
434 for (cur = rmdemux->streams; cur; cur = cur->next, n_stream++) {
435 GstRMDemuxStream *stream = cur->data;
437 /* Search backwards through this stream's index until we find the first
438 * timestamp before our target time */
439 for (i = stream->index_length - 1; i >= 0; i--) {
440 if (stream->index[i].timestamp <= time) {
441 /* Set the seek_offset for the stream so we don't bother parsing it
442 * until we've passed that point */
443 stream->seek_offset = stream->index[i].offset;
445 /* If it's also the earliest timestamp we've seen of all streams, then
448 if (earliest == GST_CLOCK_TIME_NONE ||
449 stream->index[i].timestamp < earliest) {
450 earliest = stream->index[i].timestamp;
451 rmdemux->offset = stream->index[i].offset;
452 GST_DEBUG_OBJECT (rmdemux,
453 "We're looking for %" GST_TIME_FORMAT
454 " and we found that stream %d has the latest index at %"
455 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start), n_stream,
456 GST_TIME_ARGS (earliest));
464 stream->discont = TRUE;
470 gst_rmdemux_perform_seek (GstRMDemux * rmdemux, GstEvent * event)
478 GstSeekType cur_type, stop_type;
483 GST_DEBUG_OBJECT (rmdemux, "seek with event");
485 gst_event_parse_seek (event, &rate, &format, &flags,
486 &cur_type, &cur, &stop_type, &stop);
488 /* we can only seek on time */
489 if (format != GST_FORMAT_TIME) {
490 GST_DEBUG_OBJECT (rmdemux, "can only seek on TIME");
493 /* cannot yet do backwards playback */
495 GST_DEBUG_OBJECT (rmdemux, "can only seek with positive rate, not %lf",
500 GST_DEBUG_OBJECT (rmdemux, "seek without event");
506 GST_DEBUG_OBJECT (rmdemux, "seek, rate %g", rate);
508 flush = flags & GST_SEEK_FLAG_FLUSH;
510 /* first step is to unlock the streaming thread if it is
511 * blocked in a chain call, we do this by starting the flush. */
513 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_start ());
514 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_start ());
516 gst_pad_pause_task (rmdemux->sinkpad);
519 GST_LOG_OBJECT (rmdemux, "Done starting flushes");
521 /* now grab the stream lock so that streaming cannot continue, for
522 * non flushing seeks when the element is in PAUSED this could block
524 GST_PAD_STREAM_LOCK (rmdemux->sinkpad);
526 GST_LOG_OBJECT (rmdemux, "Took streamlock");
529 gst_segment_do_seek (&rmdemux->segment, rate, format, flags,
530 cur_type, cur, stop_type, stop, &update);
533 GST_DEBUG_OBJECT (rmdemux, "segment positions set to %" GST_TIME_FORMAT "-%"
534 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start),
535 GST_TIME_ARGS (rmdemux->segment.stop));
537 /* we need to stop flushing on the sinkpad as we're going to use it
538 * next. We can do this as we have the STREAM lock now. */
539 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop (TRUE));
541 GST_LOG_OBJECT (rmdemux, "Pushed FLUSH_STOP event");
543 /* For each stream, find the first index offset equal to or before our seek
544 * target. Of these, find the smallest offset. That's where we seek to.
546 * Then we pull 4 bytes from that offset, and validate that we've seeked to a
547 * what looks like a plausible packet.
548 * If that fails, restart, with the seek target set to one less than the
549 * offset we just tried. If we run out of places to try, treat that as a fatal
552 if (!find_seek_offset_time (rmdemux, rmdemux->segment.position)) {
553 GST_LOG_OBJECT (rmdemux, "Failed to find seek offset by time");
558 GST_LOG_OBJECT (rmdemux, "Validating offset %u", rmdemux->offset);
559 validated = gst_rmdemux_validate_offset (rmdemux);
561 GST_INFO_OBJECT (rmdemux, "Failed to validate offset at %u",
563 if (!find_seek_offset_bytes (rmdemux, rmdemux->offset - 1)) {
567 validated = gst_rmdemux_validate_offset (rmdemux);
570 GST_LOG_OBJECT (rmdemux, "Found final offset. Excellent!");
572 /* now we have a new position, prepare for streaming again */
574 /* Reset the demuxer state */
575 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
578 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop (TRUE));
580 /* must send newsegment event from streaming thread, so just set flag */
581 rmdemux->need_newsegment = TRUE;
583 /* notify start of new segment */
584 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
585 gst_element_post_message (GST_ELEMENT_CAST (rmdemux),
586 gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
587 GST_FORMAT_TIME, rmdemux->segment.position));
590 /* restart our task since it might have been stopped when we did the
592 gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
597 /* streaming can continue now */
598 GST_PAD_STREAM_UNLOCK (rmdemux->sinkpad);
604 GST_DEBUG_OBJECT (rmdemux, "seek failed");
611 gst_rmdemux_src_query (GstPad * pad, GstQuery * query)
613 gboolean res = FALSE;
616 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
618 switch (GST_QUERY_TYPE (query)) {
619 case GST_QUERY_POSITION:
620 GST_DEBUG_OBJECT (rmdemux, "Position query: no idea from demuxer!");
622 case GST_QUERY_DURATION:{
625 gst_query_parse_duration (query, &fmt, NULL);
626 if (fmt == GST_FORMAT_TIME) {
627 GST_OBJECT_LOCK (rmdemux);
628 if (G_LIKELY (rmdemux->running)) {
629 gst_query_set_duration (query, GST_FORMAT_TIME, rmdemux->duration);
630 GST_DEBUG_OBJECT (rmdemux, "duration set to %" GST_TIME_FORMAT,
631 GST_TIME_ARGS (rmdemux->duration));
634 GST_OBJECT_UNLOCK (rmdemux);
638 case GST_QUERY_SEEKING:{
641 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
642 if (fmt == GST_FORMAT_TIME) {
643 GST_OBJECT_LOCK (rmdemux);
644 if (G_LIKELY (rmdemux->running)) {
645 gst_query_set_seeking (query, GST_FORMAT_TIME, rmdemux->seekable,
646 0, rmdemux->duration);
649 GST_OBJECT_UNLOCK (rmdemux);
654 res = gst_pad_query_default (pad, query);
658 gst_object_unref (rmdemux);
663 gst_rmdemux_reset (GstRMDemux * rmdemux)
667 GST_OBJECT_LOCK (rmdemux);
668 rmdemux->running = FALSE;
669 GST_OBJECT_UNLOCK (rmdemux);
671 for (cur = rmdemux->streams; cur; cur = cur->next) {
672 GstRMDemuxStream *stream = cur->data;
674 g_object_unref (stream->adapter);
675 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
676 gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
677 if (stream->pending_tags)
678 gst_tag_list_free (stream->pending_tags);
679 if (stream->subpackets)
680 g_ptr_array_free (stream->subpackets, TRUE);
681 g_free (stream->index);
684 g_slist_free (rmdemux->streams);
685 rmdemux->streams = NULL;
686 rmdemux->n_audio_streams = 0;
687 rmdemux->n_video_streams = 0;
689 if (rmdemux->pending_tags != NULL) {
690 gst_tag_list_free (rmdemux->pending_tags);
691 rmdemux->pending_tags = NULL;
694 gst_adapter_clear (rmdemux->adapter);
695 rmdemux->state = RMDEMUX_STATE_HEADER;
696 rmdemux->have_pads = FALSE;
698 gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
699 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
700 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
701 rmdemux->need_newsegment = TRUE;
704 static GstStateChangeReturn
705 gst_rmdemux_change_state (GstElement * element, GstStateChange transition)
707 GstRMDemux *rmdemux = GST_RMDEMUX (element);
708 GstStateChangeReturn res;
710 switch (transition) {
711 case GST_STATE_CHANGE_NULL_TO_READY:
713 case GST_STATE_CHANGE_READY_TO_PAUSED:
714 rmdemux->state = RMDEMUX_STATE_HEADER;
715 rmdemux->have_pads = FALSE;
716 gst_segment_init (&rmdemux->segment, GST_FORMAT_TIME);
717 rmdemux->running = FALSE;
719 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
725 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
727 switch (transition) {
728 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
730 case GST_STATE_CHANGE_PAUSED_TO_READY:{
731 gst_rmdemux_reset (rmdemux);
734 case GST_STATE_CHANGE_READY_TO_NULL:
743 /* this function is called when the pad is activated and should start
746 * We check if we can do random access to decide if we work push or
750 gst_rmdemux_sink_activate (GstPad * sinkpad)
756 query = gst_query_new_scheduling ();
758 if (!gst_pad_peer_query (sinkpad, query)) {
759 gst_query_unref (query);
763 gst_query_parse_scheduling (query, &pull_mode, NULL, NULL, NULL, NULL, NULL);
768 GST_DEBUG_OBJECT (sinkpad, "activating pull");
769 return gst_pad_activate_pull (sinkpad, TRUE);
773 GST_DEBUG_OBJECT (sinkpad, "activating push");
774 return gst_pad_activate_push (sinkpad, TRUE);
778 /* this function gets called when we activate ourselves in push mode.
779 * We cannot seek (ourselves) in the stream */
781 gst_rmdemux_sink_activate_push (GstPad * pad, gboolean active)
785 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
787 GST_DEBUG_OBJECT (rmdemux, "activate_push");
789 rmdemux->seekable = FALSE;
794 /* this function gets called when we activate ourselves in pull mode.
795 * We can perform random access to the resource and we start a task
796 * to start reading */
798 gst_rmdemux_sink_activate_pull (GstPad * pad, gboolean active)
802 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
804 GST_DEBUG_OBJECT (rmdemux, "activate_pull");
807 rmdemux->seekable = TRUE;
809 rmdemux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
810 rmdemux->data_offset = G_MAXUINT;
812 return gst_pad_start_task (pad, (GstTaskFunction) gst_rmdemux_loop, pad);
814 return gst_pad_stop_task (pad);
818 /* random access mode - just pass over to our chain function */
820 gst_rmdemux_loop (GstPad * pad)
824 GstFlowReturn ret = GST_FLOW_OK;
827 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
829 GST_LOG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
830 rmdemux->loop_state, rmdemux->offset);
832 switch (rmdemux->state) {
833 case RMDEMUX_STATE_HEADER:
836 case RMDEMUX_STATE_HEADER_DATA:
839 case RMDEMUX_STATE_DATA_PACKET:
840 size = rmdemux->avg_packet_size;
842 case RMDEMUX_STATE_EOS:
843 GST_LOG_OBJECT (rmdemux, "At EOS, pausing task");
844 ret = GST_FLOW_UNEXPECTED;
847 GST_LOG_OBJECT (rmdemux, "Default: requires %d bytes (state is %d)",
848 (int) rmdemux->size, rmdemux->state);
849 size = rmdemux->size;
852 ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
853 if (ret != GST_FLOW_OK) {
854 if (rmdemux->offset == rmdemux->index_offset) {
855 /* The index isn't available so forget about it */
856 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
857 rmdemux->offset = rmdemux->data_offset;
858 GST_OBJECT_LOCK (rmdemux);
859 rmdemux->running = TRUE;
860 rmdemux->seekable = FALSE;
861 GST_OBJECT_UNLOCK (rmdemux);
864 GST_DEBUG_OBJECT (rmdemux, "Unable to pull %d bytes at offset 0x%08x "
865 "(pull_range returned flow %s, state is %d)", (gint) size,
866 rmdemux->offset, gst_flow_get_name (ret), GST_STATE (rmdemux));
871 /* Defer to the chain function */
872 ret = gst_rmdemux_chain (pad, buffer);
873 if (ret != GST_FLOW_OK) {
874 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
879 rmdemux->offset += gst_buffer_get_size (buffer);
881 switch (rmdemux->loop_state) {
882 case RMDEMUX_LOOP_STATE_HEADER:
883 if (rmdemux->offset >= rmdemux->data_offset) {
884 /* It's the end of the header */
885 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
886 rmdemux->offset = rmdemux->index_offset;
889 case RMDEMUX_LOOP_STATE_INDEX:
890 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
891 if (rmdemux->index_offset == 0) {
892 /* We've read the last index */
893 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
894 rmdemux->offset = rmdemux->data_offset;
895 GST_OBJECT_LOCK (rmdemux);
896 rmdemux->running = TRUE;
897 GST_OBJECT_UNLOCK (rmdemux);
899 /* Get the next index */
900 rmdemux->offset = rmdemux->index_offset;
904 case RMDEMUX_LOOP_STATE_DATA:
913 const gchar *reason = gst_flow_get_name (ret);
915 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
916 rmdemux->segment_running = FALSE;
917 gst_pad_pause_task (rmdemux->sinkpad);
919 if (ret == GST_FLOW_UNEXPECTED) {
920 /* perform EOS logic */
921 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
924 /* for segment playback we need to post when (in stream time)
925 * we stopped, this is either stop (when set) or the duration. */
926 if ((stop = rmdemux->segment.stop) == -1)
927 stop = rmdemux->segment.duration;
929 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
930 gst_element_post_message (GST_ELEMENT (rmdemux),
931 gst_message_new_segment_done (GST_OBJECT (rmdemux),
932 GST_FORMAT_TIME, stop));
934 /* normal playback, send EOS to all linked pads */
935 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
936 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
938 } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_UNEXPECTED) {
939 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
940 (NULL), ("stream stopped, reason %s", reason));
941 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
948 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
952 for (i = 0; i < 4; i++) {
953 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
961 gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer)
963 GstFlowReturn ret = GST_FLOW_OK;
968 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
970 if (rmdemux->base_ts == -1) {
971 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
972 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
973 GST_TIME_ARGS (rmdemux->base_ts));
976 gst_adapter_push (rmdemux->adapter, buffer);
978 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %d",
979 gst_buffer_get_size (buffer));
982 avail = gst_adapter_available (rmdemux->adapter);
984 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
985 switch (rmdemux->state) {
986 case RMDEMUX_STATE_HEADER:
988 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
991 data = gst_adapter_map (rmdemux->adapter, HEADER_SIZE);
993 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
994 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
995 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
997 /* Sanity-check. We assume that the FOURCC is printable ASCII */
998 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
999 /* Failed. Remain in HEADER state, try again... We flush only
1000 * the actual FOURCC, not the entire header, because we could
1001 * need to resync anywhere at all... really, this should never
1003 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
1005 gst_adapter_unmap (rmdemux->adapter);
1006 gst_adapter_flush (rmdemux->adapter, 4);
1011 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1013 " size=%08x object_version=%d",
1014 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1015 rmdemux->object_version);
1017 gst_adapter_unmap (rmdemux->adapter);
1018 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1020 switch (rmdemux->object_id) {
1021 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1022 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1024 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1025 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1027 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1028 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1030 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1031 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1033 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1034 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1036 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1037 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1040 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1045 case RMDEMUX_STATE_HEADER_UNKNOWN:
1047 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1050 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1051 GST_FOURCC_ARGS (rmdemux->object_id));
1053 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1054 rmdemux->state = RMDEMUX_STATE_HEADER;
1057 case RMDEMUX_STATE_HEADER_RMF:
1059 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1062 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1063 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1064 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1065 gst_adapter_unmap (rmdemux->adapter);
1066 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1068 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1070 rmdemux->state = RMDEMUX_STATE_HEADER;
1073 case RMDEMUX_STATE_HEADER_PROP:
1075 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1078 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1079 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1080 gst_adapter_unmap (rmdemux->adapter);
1081 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1083 rmdemux->state = RMDEMUX_STATE_HEADER;
1086 case RMDEMUX_STATE_HEADER_MDPR:
1088 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1091 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1092 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1093 gst_adapter_unmap (rmdemux->adapter);
1094 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1096 rmdemux->state = RMDEMUX_STATE_HEADER;
1099 case RMDEMUX_STATE_HEADER_CONT:
1101 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1104 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1105 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1106 gst_adapter_unmap (rmdemux->adapter);
1107 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1109 rmdemux->state = RMDEMUX_STATE_HEADER;
1112 case RMDEMUX_STATE_HEADER_DATA:
1114 /* If we haven't already done so then signal there are no more pads */
1115 if (!rmdemux->have_pads) {
1116 GST_LOG_OBJECT (rmdemux, "no more pads");
1117 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1118 rmdemux->have_pads = TRUE;
1121 /* The actual header is only 8 bytes */
1122 rmdemux->size = DATA_SIZE;
1123 GST_LOG_OBJECT (rmdemux, "data available %d",
1124 gst_adapter_available (rmdemux->adapter));
1125 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1128 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1129 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1130 gst_adapter_unmap (rmdemux->adapter);
1131 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1133 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1136 case RMDEMUX_STATE_HEADER_INDX:
1138 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1141 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1142 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1143 /* Only flush the header */
1144 gst_adapter_unmap (rmdemux->adapter);
1145 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1147 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1150 case RMDEMUX_STATE_INDX_DATA:
1152 /* There's not always an data to get... */
1153 if (rmdemux->size > 0) {
1154 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1157 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1158 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1159 gst_adapter_unmap (rmdemux->adapter);
1160 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1163 rmdemux->state = RMDEMUX_STATE_HEADER;
1166 case RMDEMUX_STATE_DATA_PACKET:
1170 if (gst_adapter_available (rmdemux->adapter) < 2)
1173 gst_adapter_copy (rmdemux->adapter, header, 0, 2);
1174 version = RMDEMUX_GUINT16_GET (header);
1175 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1177 if (version == 0 || version == 1) {
1180 if (gst_adapter_available (rmdemux->adapter) < 4)
1183 gst_adapter_copy (rmdemux->adapter, header, 0, 4);
1185 length = RMDEMUX_GUINT16_GET (header + 2);
1186 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1189 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1190 /* Invalid, just drop it */
1191 gst_adapter_flush (rmdemux->adapter, 4);
1195 avail = gst_adapter_available (rmdemux->adapter);
1199 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1202 /* flush version and length */
1203 gst_adapter_flush (rmdemux->adapter, 4);
1206 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1208 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1209 rmdemux->chunk_index++;
1212 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1213 rmdemux->state = RMDEMUX_STATE_HEADER;
1216 gst_adapter_flush (rmdemux->adapter, 2);
1218 if (rmdemux->data_offset == 0) {
1219 GST_LOG_OBJECT (rmdemux,
1220 "No further data, internal demux state EOS");
1221 rmdemux->state = RMDEMUX_STATE_EOS;
1223 rmdemux->state = RMDEMUX_STATE_HEADER;
1227 case RMDEMUX_STATE_EOS:
1228 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1231 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1240 static GstRMDemuxStream *
1241 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1245 for (cur = rmdemux->streams; cur; cur = cur->next) {
1246 GstRMDemuxStream *stream = cur->data;
1248 if (stream->id == id) {
1257 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1261 for (cur = rmdemux->streams; cur; cur = cur->next) {
1262 GstRMDemuxStream *stream = cur->data;
1264 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1265 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1267 switch (GST_EVENT_TYPE (event)) {
1268 case GST_EVENT_FLUSH_STOP:
1269 stream->last_ts = -1;
1270 stream->next_ts = -1;
1271 stream->last_seq = -1;
1272 stream->next_seq = -1;
1273 stream->last_flow = GST_FLOW_OK;
1278 gst_event_ref (event);
1279 gst_pad_push_event (stream->pad, event);
1281 gst_event_unref (event);
1285 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1287 GstCaps *stream_caps = NULL;
1288 const gchar *codec_tag = NULL;
1289 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_caps (stream->pad, stream_caps);
1489 gst_pad_set_event_function (stream->pad,
1490 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1491 gst_pad_set_query_function (stream->pad,
1492 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1494 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1495 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1496 gst_pad_set_active (stream->pad, TRUE);
1497 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1499 codec_name = gst_pb_utils_get_codec_description (stream_caps);
1501 /* save for later, we must send the tags after the newsegment event */
1502 if (codec_tag != NULL && codec_name != NULL) {
1503 if (stream->pending_tags == NULL)
1504 stream->pending_tags = gst_tag_list_new_empty ();
1505 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1506 codec_tag, codec_name, NULL);
1507 g_free (codec_name);
1514 gst_caps_unref (stream_caps);
1518 re_skip_pascal_string (const guint8 * ptr)
1528 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1530 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1531 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1535 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1537 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1538 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1539 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1540 RMDEMUX_GUINT32_GET (data + 8));
1541 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1542 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1543 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1544 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1546 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1547 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1549 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1550 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1551 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1552 rmdemux->index_offset);
1553 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1554 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1555 rmdemux->data_offset);
1556 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1557 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1561 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1563 GstRMDemuxStream *stream;
1564 char *stream1_type_string;
1565 char *stream2_type_string;
1569 guint32 max_bitrate;
1570 guint32 avg_bitrate;
1572 stream = g_new0 (GstRMDemuxStream, 1);
1574 stream->id = RMDEMUX_GUINT16_GET (data);
1575 stream->index = NULL;
1576 stream->seek_offset = 0;
1577 stream->last_ts = -1;
1578 stream->next_ts = -1;
1579 stream->last_flow = GST_FLOW_OK;
1580 stream->discont = TRUE;
1581 stream->adapter = gst_adapter_new ();
1582 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1584 /* parse the bitrates */
1585 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1586 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1587 stream->bitrate = avg_bitrate;
1588 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1589 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1590 if (max_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_MAXIMUM_BITRATE, max_bitrate, NULL);
1596 if (avg_bitrate != 0) {
1597 if (stream->pending_tags == NULL)
1598 stream->pending_tags = gst_tag_list_new_empty ();
1599 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1600 GST_TAG_BITRATE, avg_bitrate, NULL);
1604 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1605 length - offset, &str_len);
1607 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1608 length - offset, &str_len);
1611 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1613 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1614 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1616 * so, we should not rely on it to know which stream type it is
1619 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1620 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1622 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1623 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1624 } else if (strcmp (stream2_type_string,
1625 "video/x-pn-multirate-realvideo") == 0) {
1626 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1627 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1628 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1629 } else if (strcmp (stream2_type_string,
1630 "audio/x-pn-multirate-realaudio") == 0) {
1631 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1632 } else if (strcmp (stream2_type_string,
1633 "audio/x-pn-multirate-realaudio-live") == 0) {
1634 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1635 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1636 /* Another audio type found in the real testsuite */
1637 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1638 } else if (strcmp (stream1_type_string, "") == 0 &&
1639 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1640 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1642 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1643 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1644 stream1_type_string, stream2_type_string);
1646 g_free (stream1_type_string);
1647 g_free (stream2_type_string);
1651 stream->subtype = stream_type;
1652 switch (stream_type) {
1654 case GST_RMDEMUX_STREAM_VIDEO:
1655 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1656 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1657 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1658 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1659 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1660 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1661 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1662 stream->extra_data_size = length - (offset + 26);
1663 stream->extra_data = (guint8 *) data + offset + 26;
1664 /* Natural way to represent framerates here requires unsigned 32 bit
1665 * numerator, which we don't have. For the nasty case, approximate...
1668 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1669 RMDEMUX_GUINT16_GET (data + offset + 24);
1670 if (numerator > G_MAXINT) {
1671 stream->framerate_numerator = (gint) (numerator >> 1);
1672 stream->framerate_denominator = 32768;
1674 stream->framerate_numerator = (gint) numerator;
1675 stream->framerate_denominator = 65536;
1679 GST_DEBUG_OBJECT (rmdemux,
1680 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1681 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1682 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1683 stream->rate, stream->framerate_numerator,
1684 stream->framerate_denominator, stream->subformat, stream->format,
1685 stream->extra_data_size);
1687 case GST_RMDEMUX_STREAM_AUDIO:{
1688 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1689 GST_INFO ("stream version = %u", stream->version);
1690 switch (stream->version) {
1692 stream->fourcc = GST_RM_AUD_14_4;
1693 stream->packet_size = 20;
1694 stream->rate = 8000;
1695 stream->n_channels = 1;
1696 stream->sample_width = 16;
1698 stream->leaf_size = 0;
1702 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1703 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1704 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1705 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1706 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1707 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1708 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1709 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1710 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1711 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1712 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1713 stream->extra_data_size);
1714 if (length - (offset + 73) >= stream->extra_data_size) {
1715 stream->extra_data = (guint8 *) data + offset + 73;
1717 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1718 stream->extra_data_size = 0;
1722 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1723 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1724 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1725 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1726 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1727 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1728 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1729 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1730 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1731 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1732 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1733 stream->extra_data_size);
1734 if (length - (offset + 78) >= stream->extra_data_size) {
1735 stream->extra_data = (guint8 *) data + offset + 78;
1737 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1738 stream->extra_data_size = 0;
1742 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1747 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1748 GST_DEBUG_OBJECT (rmdemux,
1749 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1750 stream->rate, stream->sample_width, stream->n_channels);
1754 case GST_RMDEMUX_STREAM_FILEINFO:
1758 /* Length of this section */
1759 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1760 RMDEMUX_GUINT32_GET (data + offset));
1763 /* Unknown : 00 00 00 00 */
1766 /* Number of variables that would follow (loop iterations) */
1767 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1770 while (element_nb) {
1771 /* Category Id : 00 00 00 XX 00 00 */
1775 offset += re_skip_pascal_string (data + offset);
1777 /* Variable Value Type */
1778 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1779 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1782 /* Variable Value */
1783 offset += re_skip_pascal_string (data + offset);
1789 case GST_RMDEMUX_STREAM_UNKNOWN:
1794 gst_rmdemux_add_stream (rmdemux, stream);
1798 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1803 n = RMDEMUX_GUINT32_GET (data);
1804 id = RMDEMUX_GUINT16_GET (data + 4);
1805 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1807 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1810 /* Point to the next index_stream */
1811 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1813 /* Return the length of the index */
1818 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1823 GstRMDemuxIndex *index;
1825 /* The number of index records */
1828 if (rmdemux->index_stream == NULL)
1831 /* don't parse the index a second time when operating pull-based and
1832 * reaching the end of the file */
1833 if (rmdemux->index_stream->index_length > 0) {
1834 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1838 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1839 rmdemux->index_stream->index = index;
1840 rmdemux->index_stream->index_length = n;
1842 for (i = 0; i < n; i++) {
1843 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1844 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1846 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1847 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1854 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1856 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1857 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1858 rmdemux->chunk_index = 0;
1859 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1860 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1864 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1868 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1870 GST_LOG_OBJECT (rmdemux, "tags: %" GST_PTR_FORMAT, tags);
1872 rmdemux->pending_tags =
1873 gst_tag_list_merge (rmdemux->pending_tags, tags, GST_TAG_MERGE_APPEND);
1876 static GstFlowReturn
1877 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1882 /* store the value */
1883 stream->last_flow = ret;
1885 /* if it's success we can return the value right away */
1886 if (ret == GST_FLOW_OK)
1889 /* any other error that is not-linked can be returned right
1891 if (ret != GST_FLOW_NOT_LINKED)
1894 for (cur = rmdemux->streams; cur; cur = cur->next) {
1895 GstRMDemuxStream *ostream = cur->data;
1897 ret = ostream->last_flow;
1898 /* some other return value (must be SUCCESS but we can return
1899 * other values as well) */
1900 if (ret != GST_FLOW_NOT_LINKED)
1903 /* if we get here, all other pads were unlinked and we return
1904 * NOT_LINKED then */
1910 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1911 GstRMDemuxStream * stream)
1913 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1916 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1917 stream->subpackets->len);
1918 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1919 g_ptr_array_set_size (stream->subpackets, 0);
1922 static GstFlowReturn
1923 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1925 GstFlowReturn ret = GST_FLOW_ERROR;
1928 guint packet_size = stream->packet_size;
1929 guint height = stream->subpackets->len;
1930 guint leaf_size = stream->leaf_size;
1933 g_assert (stream->height == height);
1935 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1938 outbuf = gst_buffer_new_and_alloc (height * packet_size);
1939 outdata = gst_buffer_map (outbuf, NULL, NULL, GST_MAP_WRITE);
1941 for (p = 0; p < height; ++p) {
1942 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1943 guint8 *b_data = gst_buffer_map (b, NULL, NULL, GST_MAP_READ);
1946 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1948 for (x = 0; x < packet_size / leaf_size; ++x) {
1951 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1953 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1954 memcpy (outdata + leaf_size * idx, b_data + leaf_size * x, leaf_size);
1956 gst_buffer_unmap (b, b_data, -1);
1958 gst_buffer_unmap (outbuf, outdata, -1);
1960 /* some decoders, such as realaudiodec, need to be fed in packet units */
1961 for (p = 0; p < height; ++p) {
1965 gst_buffer_copy_region (outbuf, GST_BUFFER_COPY_ALL, p * packet_size,
1968 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1969 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1971 if (stream->discont) {
1972 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1973 stream->discont = FALSE;
1976 ret = gst_pad_push (stream->pad, subbuf);
1977 if (ret != GST_FLOW_OK)
1981 gst_buffer_unref (outbuf);
1983 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1988 static GstFlowReturn
1989 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1990 GstRMDemuxStream * stream)
1994 buf = g_ptr_array_index (stream->subpackets, 0);
1995 g_ptr_array_index (stream->subpackets, 0) = NULL;
1996 g_ptr_array_set_size (stream->subpackets, 0);
1998 buf = gst_rm_utils_descramble_dnet_buffer (buf);
2000 if (stream->discont) {
2001 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2002 stream->discont = FALSE;
2004 return gst_pad_push (stream->pad, buf);
2007 static GstFlowReturn
2008 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
2009 GstRMDemuxStream * stream)
2012 GstBuffer *buf, *outbuf;
2013 guint frames, index, i;
2015 GstClockTime timestamp;
2019 buf = g_ptr_array_index (stream->subpackets, 0);
2020 g_ptr_array_index (stream->subpackets, 0) = NULL;
2021 g_ptr_array_set_size (stream->subpackets, 0);
2023 data = gst_buffer_map (buf, NULL, NULL, GST_MAP_READ);
2024 timestamp = GST_BUFFER_TIMESTAMP (buf);
2026 frames = (data[1] & 0xf0) >> 4;
2027 index = 2 * frames + 2;
2029 for (i = 0; i < frames; i++) {
2030 guint len = (data[i * 2 + 2] << 8) | data[i * 2 + 3];
2032 outbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, index, len);
2034 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2038 if (stream->discont) {
2039 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2040 stream->discont = FALSE;
2042 res = gst_pad_push (stream->pad, outbuf);
2043 if (res != GST_FLOW_OK)
2046 gst_buffer_unmap (buf, data, -1);
2047 gst_buffer_unref (buf);
2051 static GstFlowReturn
2052 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2053 GstRMDemuxStream * stream)
2058 guint packet_size = stream->packet_size;
2059 guint height = stream->subpackets->len;
2062 g_assert (stream->height == height);
2064 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2065 stream->leaf_size, height);
2067 outbuf = gst_buffer_new_and_alloc (height * packet_size);
2068 outdata = gst_buffer_map (outbuf, NULL, NULL, GST_MAP_WRITE);
2070 for (p = 0; p < height; ++p) {
2071 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2074 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
2076 gst_buffer_extract (b, 0, outdata + packet_size * p, packet_size);
2078 gst_buffer_unmap (outbuf, outdata, -1);
2080 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
2081 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
2083 if (stream->discont) {
2084 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2085 stream->discont = FALSE;
2088 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2090 ret = gst_pad_push (stream->pad, outbuf);
2092 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2097 static GstFlowReturn
2098 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2099 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2103 if (stream->subpackets == NULL)
2104 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2106 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
2107 stream->subpackets_needed, gst_buffer_get_size (buf), keyframe);
2109 if (keyframe && stream->subpackets->len > 0) {
2110 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2113 g_ptr_array_add (stream->subpackets, buf);
2115 if (stream->subpackets->len < stream->subpackets_needed)
2118 g_assert (stream->subpackets->len >= 1);
2120 switch (stream->fourcc) {
2121 case GST_RM_AUD_DNET:
2122 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2124 case GST_RM_AUD_COOK:
2125 case GST_RM_AUD_ATRC:
2126 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2128 case GST_RM_AUD_RAAC:
2129 case GST_RM_AUD_RACP:
2130 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2132 case GST_RM_AUD_SIPR:
2133 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2136 g_assert_not_reached ();
2143 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2144 guint8 * data, GstClockTime timestamp)
2148 GstClockTime ts = timestamp;
2150 if (timestamp == GST_CLOCK_TIME_NONE)
2153 /* only adjust when we have a stream with B frames */
2154 if (stream->format < 0x20200002)
2157 /* Fix timestamp. */
2158 switch (stream->fourcc) {
2159 case GST_RM_VDO_RV10:
2161 case GST_RM_VDO_RV20:
2164 * Bit 1- 2: frame type
2166 * Bit 10-22: sequence number
2169 frame_type = (data[0] >> 6) & 0x03;
2170 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2173 case GST_RM_VDO_RV30:
2177 * Bit 3: skip packet if 1
2178 * Bit 4- 5: frame type
2180 * Bit 13-25: sequence number
2183 frame_type = (data[0] >> 3) & 0x03;
2184 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2187 case GST_RM_VDO_RV40:
2190 * Bit 1: skip packet if 1
2191 * Bit 2- 3: frame type
2193 * Bit 14-26: sequence number
2196 frame_type = (data[0] >> 5) & 0x03;
2197 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2201 goto unknown_version;
2204 switch (frame_type) {
2208 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2210 if (stream->next_ts == -1)
2211 stream->next_ts = timestamp;
2213 timestamp = stream->next_ts;
2214 stream->last_ts = stream->next_ts;
2215 stream->next_ts = ts;
2216 stream->last_seq = stream->next_seq;
2217 stream->next_seq = seq;
2222 GST_LOG_OBJECT (rmdemux, "P frame");
2224 timestamp = stream->last_ts = stream->next_ts;
2225 if (seq < stream->next_seq)
2226 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2228 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2229 stream->last_seq = stream->next_seq;
2230 stream->next_seq = seq;
2235 GST_LOG_OBJECT (rmdemux, "B frame");
2237 if (seq < stream->last_seq) {
2239 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2241 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2246 goto unknown_frame_type;
2250 GST_LOG_OBJECT (rmdemux,
2251 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2252 GST_TIME_ARGS (timestamp));
2259 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2260 ("Unknown version: %i.", stream->version), (NULL));
2261 return GST_FLOW_ERROR;
2266 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2267 frame_type), (NULL));
2268 return GST_FLOW_ERROR;
2272 #define PARSE_NUMBER(data, size, number, label) \
2276 number = GST_READ_UINT16_BE (data); \
2277 if (!(number & 0xc000)) { \
2280 number = GST_READ_UINT32_BE (data); \
2290 static GstFlowReturn
2291 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2292 GstBuffer * in, guint offset, guint16 version,
2293 GstClockTime timestamp, gboolean key)
2300 base = gst_buffer_map (in, &size, NULL, GST_MAP_READ);
2302 data = base + offset;
2305 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2306 * was previously for that given stream. */
2307 ret = stream->last_flow;
2313 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2314 guint fragment_size;
2315 GstBuffer *fragment;
2317 pkg_header = *data++;
2321 * bit 7: 1=last block in block chain
2322 * bit 6: 1=short header (only one block?)
2324 if ((pkg_header & 0xc0) == 0x40) {
2325 /* skip unknown byte */
2331 if ((pkg_header & 0x40) == 0) {
2332 pkg_subseq = (*data++) & 0x7f;
2339 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2342 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2346 goto not_enough_data;
2348 pkg_seqnum = *data++;
2352 GST_DEBUG_OBJECT (rmdemux,
2353 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2354 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2356 /* calc size of fragment */
2357 if ((pkg_header & 0xc0) == 0x80) {
2358 fragment_size = pkg_offset;
2360 if ((pkg_header & 0xc0) == 0)
2361 fragment_size = size;
2363 fragment_size = pkg_length;
2365 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2367 /* get the fragment */
2369 gst_buffer_copy_region (in, GST_BUFFER_COPY_ALL, data - base,
2372 if (pkg_subseq == 1) {
2373 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2374 gst_adapter_clear (stream->adapter);
2375 stream->frag_current = 0;
2376 stream->frag_count = 0;
2377 stream->frag_length = pkg_length;
2378 } else if (pkg_subseq == 0) {
2379 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2380 stream->frag_current = 0;
2381 stream->frag_count = 0;
2382 stream->frag_length = fragment_size;
2385 /* put fragment in adapter */
2386 gst_adapter_push (stream->adapter, fragment);
2387 stream->frag_offset[stream->frag_count] = stream->frag_current;
2388 stream->frag_current += fragment_size;
2389 stream->frag_count++;
2391 if (stream->frag_count > MAX_FRAGS)
2392 goto too_many_fragments;
2394 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2395 stream->frag_current, stream->frag_length);
2397 /* flush fragment when complete */
2398 if (stream->frag_current >= stream->frag_length) {
2400 guint8 *outdata, *outbase;
2404 /* calculate header size, which is:
2405 * 1 byte for the number of fragments - 1
2406 * for each fragment:
2407 * 4 bytes 0x00000001 little endian
2408 * 4 bytes fragment offset
2410 * This is also the matroska header for realvideo, the decoder needs the
2411 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2412 * in front of the data.
2414 header_size = 1 + (8 * (stream->frag_count));
2416 GST_DEBUG_OBJECT (rmdemux,
2417 "fragmented completed. count %d, header_size %u", stream->frag_count,
2420 avail = gst_adapter_available (stream->adapter);
2422 out = gst_buffer_new_and_alloc (header_size + avail);
2423 outbase = gst_buffer_map (out, NULL, NULL, GST_MAP_WRITE);
2427 *outdata++ = stream->frag_count - 1;
2428 for (i = 0; i < stream->frag_count; i++) {
2429 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2431 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2435 /* copy packet data after the header now */
2436 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2437 gst_adapter_flush (stream->adapter, avail);
2439 stream->frag_current = 0;
2440 stream->frag_count = 0;
2441 stream->frag_length = 0;
2443 if (timestamp != -1) {
2444 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2445 timestamp -= rmdemux->first_ts;
2449 if (rmdemux->base_ts != -1)
2450 timestamp += rmdemux->base_ts;
2453 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2455 gst_buffer_unmap (out, outbase, -1);
2457 GST_BUFFER_TIMESTAMP (out) = timestamp;
2459 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2460 GST_TIME_ARGS (timestamp));
2462 if (stream->discont) {
2463 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2464 stream->discont = FALSE;
2468 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DELTA_UNIT);
2471 ret = gst_pad_push (stream->pad, out);
2472 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2473 if (ret != GST_FLOW_OK)
2476 timestamp = GST_CLOCK_TIME_NONE;
2478 data += fragment_size;
2479 size -= fragment_size;
2481 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2484 gst_buffer_unmap (in, base, -1);
2485 gst_buffer_unref (in);
2492 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2499 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2500 ("Got more fragments (%u) than can be handled (%u)",
2501 stream->frag_count, MAX_FRAGS), (NULL));
2502 ret = GST_FLOW_ERROR;
2507 static GstFlowReturn
2508 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2509 GstBuffer * in, guint offset, guint16 version,
2510 GstClockTime timestamp, gboolean key)
2515 buffer = gst_buffer_copy_region (in, GST_BUFFER_COPY_MEMORY, offset, -1);
2517 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2518 timestamp -= rmdemux->first_ts;
2522 if (rmdemux->base_ts != -1)
2523 timestamp += rmdemux->base_ts;
2525 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2527 if (stream->needs_descrambling) {
2528 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2529 GST_TIME_ARGS (timestamp));
2530 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2532 GST_LOG_OBJECT (rmdemux,
2533 "Pushing buffer of size %d, timestamp %" GST_TIME_FORMAT "to pad %s",
2534 gst_buffer_get_size (buffer), GST_TIME_ARGS (timestamp),
2535 GST_PAD_NAME (stream->pad));
2537 if (stream->discont) {
2538 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2539 stream->discont = FALSE;
2541 ret = gst_pad_push (stream->pad, buffer);
2544 gst_buffer_unref (in);
2549 static GstFlowReturn
2550 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2553 GstRMDemuxStream *stream;
2555 GstFlowReturn cret, ret;
2556 GstClockTime timestamp;
2558 guint8 *data, *base;
2562 base = data = gst_buffer_map (in, &size, NULL, GST_MAP_READ);
2565 id = RMDEMUX_GUINT16_GET (data);
2567 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2568 if (!stream || !stream->pad)
2569 goto unknown_stream;
2571 /* timestamp in Msec */
2572 ts = RMDEMUX_GUINT32_GET (data + 2);
2573 timestamp = ts * GST_MSECOND;
2575 rmdemux->segment.position = timestamp;
2577 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2578 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2579 GST_TIME_ARGS (timestamp), size, version, ts);
2581 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2582 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2583 GST_TIME_ARGS (timestamp));
2584 rmdemux->first_ts = timestamp;
2587 /* skip stream_id and timestamp */
2592 flags = GST_READ_UINT8 (data + 1);
2597 /* version 1 has an extra byte */
2602 offset = data - base;
2603 gst_buffer_unmap (in, base, -1);
2605 key = (flags & 0x02) != 0;
2606 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2608 if (rmdemux->need_newsegment) {
2611 event = gst_event_new_segment (&rmdemux->segment);
2613 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2614 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2616 gst_rmdemux_send_event (rmdemux, event);
2617 rmdemux->need_newsegment = FALSE;
2619 if (rmdemux->pending_tags != NULL) {
2620 gst_rmdemux_send_event (rmdemux,
2621 gst_event_new_tag (rmdemux->pending_tags));
2622 rmdemux->pending_tags = NULL;
2626 if (stream->pending_tags != NULL) {
2627 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2628 gst_pad_push_event (stream->pad, gst_event_new_tag (stream->pending_tags));
2629 stream->pending_tags = NULL;
2632 if ((rmdemux->offset + size) <= stream->seek_offset) {
2633 GST_DEBUG_OBJECT (rmdemux,
2634 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2635 stream->id, stream->seek_offset, rmdemux->offset, size);
2637 gst_buffer_unref (in);
2641 /* do special headers */
2642 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2644 gst_rmdemux_parse_video_packet (rmdemux, stream, in, offset,
2645 version, timestamp, key);
2646 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2648 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, offset,
2649 version, timestamp, key);
2651 gst_buffer_unref (in);
2655 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2663 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2665 gst_buffer_unmap (in, base, -1);
2666 gst_buffer_unref (in);
2672 gst_rmdemux_plugin_init (GstPlugin * plugin)
2674 return gst_element_register (plugin, "rmdemux",
2675 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);