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_%02d",
118 GST_STATIC_CAPS_ANY);
120 static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
121 GST_STATIC_PAD_TEMPLATE ("audio_%02d",
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 const GstQueryType *gst_rmdemux_src_query_types (GstPad * pad);
148 static gboolean gst_rmdemux_src_query (GstPad * pad, GstQuery * query);
149 static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux,
152 static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data,
154 static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data,
156 static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux,
157 const guint8 * data, int length);
158 static guint gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data,
160 static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data,
162 static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data,
164 static GstFlowReturn gst_rmdemux_parse_packet (GstRMDemux * rmdemux,
165 GstBuffer * in, guint16 version);
166 static void gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux,
167 const guint8 * data, int length);
168 static void gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
169 GstRMDemuxStream * stream);
170 static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
174 gst_rmdemux_get_type (void)
176 static GType rmdemux_type = 0;
179 static const GTypeInfo rmdemux_info = {
180 sizeof (GstRMDemuxClass),
181 (GBaseInitFunc) gst_rmdemux_base_init, NULL,
182 (GClassInitFunc) gst_rmdemux_class_init,
183 NULL, NULL, sizeof (GstRMDemux), 0,
184 (GInstanceInitFunc) gst_rmdemux_init,
188 g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
195 gst_rmdemux_base_init (GstRMDemuxClass * klass)
197 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
199 gst_element_class_add_pad_template (element_class,
200 gst_static_pad_template_get (&gst_rmdemux_sink_template));
201 gst_element_class_add_pad_template (element_class,
202 gst_static_pad_template_get (&gst_rmdemux_videosrc_template));
203 gst_element_class_add_pad_template (element_class,
204 gst_static_pad_template_get (&gst_rmdemux_audiosrc_template));
205 gst_element_class_set_details_simple (element_class, "RealMedia Demuxer",
207 "Demultiplex a RealMedia file into audio and video streams",
208 "David Schleef <ds@schleef.org>");
212 gst_rmdemux_class_init (GstRMDemuxClass * klass)
214 GObjectClass *gobject_class;
215 GstElementClass *gstelement_class;
217 gobject_class = (GObjectClass *) klass;
218 gstelement_class = (GstElementClass *) klass;
220 parent_class = g_type_class_peek_parent (klass);
222 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rmdemux_change_state);
224 GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
225 0, "Demuxer for Realmedia streams");
227 gobject_class->finalize = gst_rmdemux_finalize;
231 gst_rmdemux_finalize (GObject * object)
233 GstRMDemux *rmdemux = GST_RMDEMUX (object);
235 if (rmdemux->adapter) {
236 g_object_unref (rmdemux->adapter);
237 rmdemux->adapter = NULL;
240 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
244 gst_rmdemux_init (GstRMDemux * rmdemux)
247 gst_pad_new_from_static_template (&gst_rmdemux_sink_template, "sink");
248 gst_pad_set_event_function (rmdemux->sinkpad,
249 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_event));
250 gst_pad_set_chain_function (rmdemux->sinkpad,
251 GST_DEBUG_FUNCPTR (gst_rmdemux_chain));
252 gst_pad_set_activate_function (rmdemux->sinkpad,
253 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate));
254 gst_pad_set_activatepull_function (rmdemux->sinkpad,
255 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_pull));
256 gst_pad_set_activatepush_function (rmdemux->sinkpad,
257 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_push));
259 gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
261 rmdemux->adapter = gst_adapter_new ();
262 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
263 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
264 rmdemux->need_newsegment = TRUE;
266 gst_rm_utils_run_tests ();
270 gst_rmdemux_sink_event (GstPad * pad, GstEvent * event)
275 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
277 GST_LOG_OBJECT (pad, "%s event", GST_EVENT_TYPE_NAME (event));
279 switch (GST_EVENT_TYPE (event)) {
280 case GST_EVENT_NEWSEGMENT:
281 gst_event_unref (event);
285 ret = gst_pad_event_default (pad, event);
289 gst_object_unref (rmdemux);
294 gst_rmdemux_src_event (GstPad * pad, GstEvent * event)
298 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
300 GST_LOG_OBJECT (rmdemux, "handling src event");
302 switch (GST_EVENT_TYPE (event)) {
307 GST_LOG_OBJECT (rmdemux, "Event on src: SEEK");
308 /* can't seek if we are not seekable, FIXME could pass the
309 * seek query upstream after converting it to bytes using
310 * the average bitrate of the stream. */
311 if (!rmdemux->seekable) {
313 GST_DEBUG ("seek on non seekable stream");
317 GST_OBJECT_LOCK (rmdemux);
318 /* check if we can do the seek now */
319 running = rmdemux->running;
320 GST_OBJECT_UNLOCK (rmdemux);
322 /* now do the seek */
324 ret = gst_rmdemux_perform_seek (rmdemux, event);
328 gst_event_unref (event);
332 GST_LOG_OBJECT (rmdemux, "Event on src: type=%d", GST_EVENT_TYPE (event));
333 ret = gst_pad_event_default (pad, event);
340 GST_DEBUG ("error handling event");
341 gst_event_unref (event);
345 /* Validate that this looks like a reasonable point to seek to */
347 gst_rmdemux_validate_offset (GstRMDemux * rmdemux)
350 GstFlowReturn flowret;
351 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 version = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer));
371 if (version != 0 && version != 1) {
372 GST_DEBUG_OBJECT (rmdemux, "Expected version 0 or 1, got %d",
377 length = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer) + 2);
378 /* TODO: Also check against total stream length */
380 GST_DEBUG_OBJECT (rmdemux, "Expected length >= 4, got %d", (int) length);
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",
397 find_seek_offset_bytes (GstRMDemux * rmdemux, guint target)
401 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");
528 /* close current segment first */
529 if (rmdemux->segment_running && !flush) {
532 newseg = gst_event_new_new_segment (TRUE, rmdemux->segment.rate,
533 GST_FORMAT_TIME, rmdemux->segment.start,
534 rmdemux->segment.last_stop, rmdemux->segment.time);
536 gst_rmdemux_send_event (rmdemux, newseg);
540 gst_segment_set_seek (&rmdemux->segment, rate, format, flags,
541 cur_type, cur, stop_type, stop, &update);
544 GST_DEBUG_OBJECT (rmdemux, "segment positions set to %" GST_TIME_FORMAT "-%"
545 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start),
546 GST_TIME_ARGS (rmdemux->segment.stop));
548 /* we need to stop flushing on the sinkpad as we're going to use it
549 * next. We can do this as we have the STREAM lock now. */
550 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop ());
552 GST_LOG_OBJECT (rmdemux, "Pushed FLUSH_STOP event");
554 /* For each stream, find the first index offset equal to or before our seek
555 * target. Of these, find the smallest offset. That's where we seek to.
557 * Then we pull 4 bytes from that offset, and validate that we've seeked to a
558 * what looks like a plausible packet.
559 * If that fails, restart, with the seek target set to one less than the
560 * offset we just tried. If we run out of places to try, treat that as a fatal
563 if (!find_seek_offset_time (rmdemux, rmdemux->segment.last_stop)) {
564 GST_LOG_OBJECT (rmdemux, "Failed to find seek offset by time");
569 GST_LOG_OBJECT (rmdemux, "Validating offset %u", rmdemux->offset);
570 validated = gst_rmdemux_validate_offset (rmdemux);
572 GST_INFO_OBJECT (rmdemux, "Failed to validate offset at %u",
574 if (!find_seek_offset_bytes (rmdemux, rmdemux->offset - 1)) {
578 validated = gst_rmdemux_validate_offset (rmdemux);
581 GST_LOG_OBJECT (rmdemux, "Found final offset. Excellent!");
583 /* now we have a new position, prepare for streaming again */
585 /* Reset the demuxer state */
586 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
589 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop ());
591 /* must send newsegment event from streaming thread, so just set flag */
592 rmdemux->need_newsegment = TRUE;
594 /* notify start of new segment */
595 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
596 gst_element_post_message (GST_ELEMENT_CAST (rmdemux),
597 gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
598 GST_FORMAT_TIME, rmdemux->segment.last_stop));
601 /* restart our task since it might have been stopped when we did the
603 gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
608 /* streaming can continue now */
609 GST_PAD_STREAM_UNLOCK (rmdemux->sinkpad);
615 GST_DEBUG_OBJECT (rmdemux, "seek failed");
622 gst_rmdemux_src_query (GstPad * pad, GstQuery * query)
624 gboolean res = FALSE;
627 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
629 switch (GST_QUERY_TYPE (query)) {
630 case GST_QUERY_POSITION:
631 GST_DEBUG_OBJECT (rmdemux, "Position query: no idea from demuxer!");
633 case GST_QUERY_DURATION:{
636 gst_query_parse_duration (query, &fmt, NULL);
637 if (fmt == GST_FORMAT_TIME) {
638 GST_OBJECT_LOCK (rmdemux);
639 if (G_LIKELY (rmdemux->running)) {
640 gst_query_set_duration (query, GST_FORMAT_TIME, rmdemux->duration);
641 GST_DEBUG_OBJECT (rmdemux, "duration set to %" GST_TIME_FORMAT,
642 GST_TIME_ARGS (rmdemux->duration));
645 GST_OBJECT_UNLOCK (rmdemux);
649 case GST_QUERY_SEEKING:{
652 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
653 if (fmt == GST_FORMAT_TIME) {
654 GST_OBJECT_LOCK (rmdemux);
655 if (G_LIKELY (rmdemux->running)) {
656 gst_query_set_seeking (query, GST_FORMAT_TIME, rmdemux->seekable,
657 0, rmdemux->duration);
660 GST_OBJECT_UNLOCK (rmdemux);
665 res = gst_pad_query_default (pad, query);
669 gst_object_unref (rmdemux);
673 static const GstQueryType *
674 gst_rmdemux_src_query_types (GstPad * pad)
676 static const GstQueryType query_types[] = {
687 gst_rmdemux_reset (GstRMDemux * rmdemux)
691 GST_OBJECT_LOCK (rmdemux);
692 rmdemux->running = FALSE;
693 GST_OBJECT_UNLOCK (rmdemux);
695 for (cur = rmdemux->streams; cur; cur = cur->next) {
696 GstRMDemuxStream *stream = cur->data;
698 g_object_unref (stream->adapter);
699 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
700 gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
701 if (stream->pending_tags)
702 gst_tag_list_free (stream->pending_tags);
703 if (stream->subpackets)
704 g_ptr_array_free (stream->subpackets, TRUE);
705 g_free (stream->index);
708 g_slist_free (rmdemux->streams);
709 rmdemux->streams = NULL;
710 rmdemux->n_audio_streams = 0;
711 rmdemux->n_video_streams = 0;
713 gst_adapter_clear (rmdemux->adapter);
714 rmdemux->state = RMDEMUX_STATE_HEADER;
715 rmdemux->have_pads = FALSE;
717 gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
718 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
719 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
720 rmdemux->need_newsegment = TRUE;
723 static GstStateChangeReturn
724 gst_rmdemux_change_state (GstElement * element, GstStateChange transition)
726 GstRMDemux *rmdemux = GST_RMDEMUX (element);
727 GstStateChangeReturn res;
729 switch (transition) {
730 case GST_STATE_CHANGE_NULL_TO_READY:
732 case GST_STATE_CHANGE_READY_TO_PAUSED:
733 rmdemux->state = RMDEMUX_STATE_HEADER;
734 rmdemux->have_pads = FALSE;
735 gst_segment_init (&rmdemux->segment, GST_FORMAT_TIME);
736 rmdemux->running = FALSE;
738 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
744 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
746 switch (transition) {
747 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
749 case GST_STATE_CHANGE_PAUSED_TO_READY:{
750 gst_rmdemux_reset (rmdemux);
753 case GST_STATE_CHANGE_READY_TO_NULL:
762 /* this function is called when the pad is activated and should start
765 * We check if we can do random access to decide if we work push or
769 gst_rmdemux_sink_activate (GstPad * sinkpad)
771 if (gst_pad_check_pull_range (sinkpad)) {
772 return gst_pad_activate_pull (sinkpad, TRUE);
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 size = GST_BUFFER_SIZE (buffer);
873 /* Defer to the chain function */
874 ret = gst_rmdemux_chain (pad, buffer);
875 if (ret != GST_FLOW_OK) {
876 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
881 rmdemux->offset += size;
883 switch (rmdemux->loop_state) {
884 case RMDEMUX_LOOP_STATE_HEADER:
885 if (rmdemux->offset >= rmdemux->data_offset) {
886 /* It's the end of the header */
887 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
888 rmdemux->offset = rmdemux->index_offset;
891 case RMDEMUX_LOOP_STATE_INDEX:
892 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
893 if (rmdemux->index_offset == 0) {
894 /* We've read the last index */
895 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
896 rmdemux->offset = rmdemux->data_offset;
897 GST_OBJECT_LOCK (rmdemux);
898 rmdemux->running = TRUE;
899 GST_OBJECT_UNLOCK (rmdemux);
901 /* Get the next index */
902 rmdemux->offset = rmdemux->index_offset;
906 case RMDEMUX_LOOP_STATE_DATA:
915 const gchar *reason = gst_flow_get_name (ret);
917 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
918 rmdemux->segment_running = FALSE;
919 gst_pad_pause_task (rmdemux->sinkpad);
921 if (ret == GST_FLOW_UNEXPECTED) {
922 /* perform EOS logic */
923 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
926 /* for segment playback we need to post when (in stream time)
927 * we stopped, this is either stop (when set) or the duration. */
928 if ((stop = rmdemux->segment.stop) == -1)
929 stop = rmdemux->segment.duration;
931 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
932 gst_element_post_message (GST_ELEMENT (rmdemux),
933 gst_message_new_segment_done (GST_OBJECT (rmdemux),
934 GST_FORMAT_TIME, stop));
936 /* normal playback, send EOS to all linked pads */
937 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
938 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
940 } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_UNEXPECTED) {
941 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
942 (NULL), ("stream stopped, reason %s", reason));
943 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
950 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
954 for (i = 0; i < 4; i++) {
955 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
963 gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer)
965 GstFlowReturn ret = GST_FLOW_OK;
970 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
972 if (rmdemux->base_ts == -1) {
973 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
974 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
975 GST_TIME_ARGS (rmdemux->base_ts));
978 gst_adapter_push (rmdemux->adapter, buffer);
980 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %d",
981 GST_BUFFER_SIZE (buffer));
984 avail = gst_adapter_available (rmdemux->adapter);
986 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
987 switch (rmdemux->state) {
988 case RMDEMUX_STATE_HEADER:
990 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
993 data = gst_adapter_peek (rmdemux->adapter, HEADER_SIZE);
995 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
996 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
997 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
999 /* Sanity-check. We assume that the FOURCC is printable ASCII */
1000 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
1001 /* Failed. Remain in HEADER state, try again... We flush only
1002 * the actual FOURCC, not the entire header, because we could
1003 * need to resync anywhere at all... really, this should never
1005 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
1007 gst_adapter_flush (rmdemux->adapter, 4);
1012 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1014 " size=%08x object_version=%d",
1015 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1016 rmdemux->object_version);
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_peek (rmdemux->adapter, rmdemux->size);
1065 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1068 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1069 rmdemux->state = RMDEMUX_STATE_HEADER;
1072 case RMDEMUX_STATE_HEADER_PROP:
1074 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1076 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1078 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1080 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1081 rmdemux->state = RMDEMUX_STATE_HEADER;
1084 case RMDEMUX_STATE_HEADER_MDPR:
1086 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1088 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1090 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1092 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1093 rmdemux->state = RMDEMUX_STATE_HEADER;
1096 case RMDEMUX_STATE_HEADER_CONT:
1098 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1100 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1102 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1104 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1105 rmdemux->state = RMDEMUX_STATE_HEADER;
1108 case RMDEMUX_STATE_HEADER_DATA:
1110 /* If we haven't already done so then signal there are no more pads */
1111 if (!rmdemux->have_pads) {
1112 GST_LOG_OBJECT (rmdemux, "no more pads");
1113 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1114 rmdemux->have_pads = TRUE;
1117 /* The actual header is only 8 bytes */
1118 rmdemux->size = DATA_SIZE;
1119 GST_LOG_OBJECT (rmdemux, "data available %d",
1120 gst_adapter_available (rmdemux->adapter));
1121 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1124 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1126 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1128 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1130 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1133 case RMDEMUX_STATE_HEADER_INDX:
1135 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1137 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1139 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1141 /* Only flush the header */
1142 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1144 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1147 case RMDEMUX_STATE_INDX_DATA:
1149 /* There's not always an data to get... */
1150 if (rmdemux->size > 0) {
1151 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1154 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1156 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1158 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1161 rmdemux->state = RMDEMUX_STATE_HEADER;
1164 case RMDEMUX_STATE_DATA_PACKET:
1166 if (gst_adapter_available (rmdemux->adapter) < 2)
1169 data = gst_adapter_peek (rmdemux->adapter, 2);
1170 version = RMDEMUX_GUINT16_GET (data);
1171 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1173 if (version == 0 || version == 1) {
1176 if (gst_adapter_available (rmdemux->adapter) < 4)
1178 data = gst_adapter_peek (rmdemux->adapter, 4);
1180 length = RMDEMUX_GUINT16_GET (data + 2);
1181 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1184 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1185 /* Invalid, just drop it */
1186 gst_adapter_flush (rmdemux->adapter, 4);
1190 avail = gst_adapter_available (rmdemux->adapter);
1194 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1197 /* flush version and length */
1198 gst_adapter_flush (rmdemux->adapter, 4);
1201 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1203 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1204 rmdemux->chunk_index++;
1207 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1208 rmdemux->state = RMDEMUX_STATE_HEADER;
1211 gst_adapter_flush (rmdemux->adapter, 2);
1213 if (rmdemux->data_offset == 0) {
1214 GST_LOG_OBJECT (rmdemux,
1215 "No further data, internal demux state EOS");
1216 rmdemux->state = RMDEMUX_STATE_EOS;
1218 rmdemux->state = RMDEMUX_STATE_HEADER;
1222 case RMDEMUX_STATE_EOS:
1223 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1226 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1235 static GstRMDemuxStream *
1236 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1240 for (cur = rmdemux->streams; cur; cur = cur->next) {
1241 GstRMDemuxStream *stream = cur->data;
1243 if (stream->id == id) {
1252 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1256 for (cur = rmdemux->streams; cur; cur = cur->next) {
1257 GstRMDemuxStream *stream = cur->data;
1259 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1260 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1262 switch (GST_EVENT_TYPE (event)) {
1263 case GST_EVENT_FLUSH_STOP:
1264 stream->last_ts = -1;
1265 stream->next_ts = -1;
1266 stream->last_seq = -1;
1267 stream->next_seq = -1;
1268 stream->last_flow = GST_FLOW_OK;
1273 gst_event_ref (event);
1274 gst_pad_push_event (stream->pad, event);
1276 gst_event_unref (event);
1280 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1282 GstCaps *stream_caps = NULL;
1283 const gchar *codec_tag = NULL;
1284 gchar *codec_name = NULL;
1287 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1288 char *name = g_strdup_printf ("video_%02d", rmdemux->n_video_streams);
1291 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1294 codec_tag = GST_TAG_VIDEO_CODEC;
1296 switch (stream->fourcc) {
1297 case GST_RM_VDO_RV10:
1300 case GST_RM_VDO_RV20:
1303 case GST_RM_VDO_RV30:
1306 case GST_RM_VDO_RV40:
1310 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1311 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1312 GST_WARNING_OBJECT (rmdemux,
1313 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1314 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1319 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1321 "format", G_TYPE_INT,
1322 (int) stream->format,
1323 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1327 gst_caps_set_simple (stream_caps,
1328 "width", G_TYPE_INT, stream->width,
1329 "height", G_TYPE_INT, stream->height,
1330 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1331 stream->framerate_denominator, NULL);
1333 rmdemux->n_video_streams++;
1335 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1336 char *name = g_strdup_printf ("audio_%02d", rmdemux->n_audio_streams);
1339 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1340 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1343 codec_tag = GST_TAG_AUDIO_CODEC;
1345 switch (stream->fourcc) {
1346 /* Older RealAudio Codecs */
1347 case GST_RM_AUD_14_4:
1351 case GST_RM_AUD_28_8:
1355 /* DolbyNet (Dolby AC3, low bitrate) */
1356 case GST_RM_AUD_DNET:
1358 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1359 (int) stream->rate, NULL);
1360 stream->needs_descrambling = TRUE;
1361 stream->subpackets_needed = 1;
1362 stream->subpackets = NULL;
1366 case GST_RM_AUD_RAAC:
1367 case GST_RM_AUD_RACP:
1369 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1370 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1371 if (stream->extra_data_size > 0) {
1372 /* strip off an unknown byte in the extra data */
1373 stream->extra_data_size--;
1374 stream->extra_data++;
1376 stream->needs_descrambling = TRUE;
1377 stream->subpackets_needed = 1;
1378 stream->subpackets = NULL;
1382 case GST_RM_AUD_ATRC:
1383 stream_caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
1384 stream->needs_descrambling = TRUE;
1385 stream->subpackets_needed = stream->height;
1386 stream->subpackets = NULL;
1389 /* RealAudio G2 audio */
1390 case GST_RM_AUD_COOK:
1392 stream->needs_descrambling = TRUE;
1393 stream->subpackets_needed = stream->height;
1394 stream->subpackets = NULL;
1397 /* RALF is lossless */
1398 case GST_RM_AUD_RALF:
1399 GST_DEBUG_OBJECT (rmdemux, "RALF");
1400 stream_caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
1403 case GST_RM_AUD_SIPR:
1405 if (stream->flavor > 3) {
1406 GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
1412 GST_DEBUG_OBJECT (rmdemux, "SIPR");
1413 stream_caps = gst_caps_new_simple ("audio/x-sipro", NULL);
1414 stream->needs_descrambling = TRUE;
1415 stream->subpackets_needed = stream->height;
1416 stream->subpackets = NULL;
1417 stream->leaf_size = sipr_subpk_size[stream->flavor];
1422 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1423 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1424 GST_WARNING_OBJECT (rmdemux,
1425 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1426 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1432 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1433 (int) version, NULL);
1437 gst_caps_set_simple (stream_caps,
1438 "flavor", G_TYPE_INT, (int) stream->flavor,
1439 "rate", G_TYPE_INT, (int) stream->rate,
1440 "channels", G_TYPE_INT, (int) stream->n_channels,
1441 "width", G_TYPE_INT, (int) stream->sample_width,
1442 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1443 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1444 "bitrate", G_TYPE_INT, (int) stream->bitrate,
1445 "height", G_TYPE_INT, (int) stream->height, NULL);
1447 rmdemux->n_audio_streams++;
1449 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1455 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1456 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1457 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1458 g_slist_length (rmdemux->streams));
1460 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1463 if (stream->pad && stream_caps) {
1465 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1466 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1468 /* add codec_data if there is any */
1469 if (stream->extra_data_size > 0) {
1472 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1473 memcpy (GST_BUFFER_DATA (buffer), stream->extra_data,
1474 stream->extra_data_size);
1476 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1479 gst_buffer_unref (buffer);
1482 gst_pad_use_fixed_caps (stream->pad);
1484 gst_pad_set_caps (stream->pad, stream_caps);
1485 gst_pad_set_event_function (stream->pad,
1486 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1487 gst_pad_set_query_type_function (stream->pad,
1488 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query_types));
1489 gst_pad_set_query_function (stream->pad,
1490 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1492 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1493 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1494 gst_pad_set_active (stream->pad, TRUE);
1495 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1497 codec_name = gst_pb_utils_get_codec_description (stream_caps);
1499 /* save for later, we must send the tags after the newsegment event */
1500 if (codec_tag != NULL && codec_name != NULL) {
1501 if (stream->pending_tags == NULL)
1502 stream->pending_tags = gst_tag_list_new ();
1503 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1504 codec_tag, codec_name, NULL);
1505 g_free (codec_name);
1512 gst_caps_unref (stream_caps);
1516 re_skip_pascal_string (const guint8 * ptr)
1526 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1528 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1529 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1533 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1535 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1536 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1537 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1538 RMDEMUX_GUINT32_GET (data + 8));
1539 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1540 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1541 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1542 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1544 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1545 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1547 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1548 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1549 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1550 rmdemux->index_offset);
1551 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1552 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1553 rmdemux->data_offset);
1554 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1555 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1559 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1561 GstRMDemuxStream *stream;
1562 char *stream1_type_string;
1563 char *stream2_type_string;
1567 guint32 max_bitrate;
1568 guint32 avg_bitrate;
1570 stream = g_new0 (GstRMDemuxStream, 1);
1572 stream->id = RMDEMUX_GUINT16_GET (data);
1573 stream->index = NULL;
1574 stream->seek_offset = 0;
1575 stream->last_ts = -1;
1576 stream->next_ts = -1;
1577 stream->last_flow = GST_FLOW_OK;
1578 stream->discont = TRUE;
1579 stream->adapter = gst_adapter_new ();
1580 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1582 /* parse the bitrates */
1583 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1584 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1585 stream->bitrate = avg_bitrate;
1586 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1587 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1588 if (max_bitrate != 0) {
1589 if (stream->pending_tags == NULL)
1590 stream->pending_tags = gst_tag_list_new ();
1591 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1592 GST_TAG_MAXIMUM_BITRATE, max_bitrate, NULL);
1594 if (avg_bitrate != 0) {
1595 if (stream->pending_tags == NULL)
1596 stream->pending_tags = gst_tag_list_new ();
1597 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1598 GST_TAG_BITRATE, avg_bitrate, NULL);
1602 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1603 length - offset, &str_len);
1605 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1606 length - offset, &str_len);
1609 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1611 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1612 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1614 * so, we should not rely on it to know which stream type it is
1617 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1618 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1620 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1621 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1622 } else if (strcmp (stream2_type_string,
1623 "video/x-pn-multirate-realvideo") == 0) {
1624 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1625 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1626 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1627 } else if (strcmp (stream2_type_string,
1628 "audio/x-pn-multirate-realaudio") == 0) {
1629 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1630 } else if (strcmp (stream2_type_string,
1631 "audio/x-pn-multirate-realaudio-live") == 0) {
1632 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1633 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1634 /* Another audio type found in the real testsuite */
1635 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1636 } else if (strcmp (stream1_type_string, "") == 0 &&
1637 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1638 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1640 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1641 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1642 stream1_type_string, stream2_type_string);
1644 g_free (stream1_type_string);
1645 g_free (stream2_type_string);
1649 stream->subtype = stream_type;
1650 switch (stream_type) {
1652 case GST_RMDEMUX_STREAM_VIDEO:
1653 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1654 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1655 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1656 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1657 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1658 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1659 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1660 stream->extra_data_size = length - (offset + 26);
1661 stream->extra_data = (guint8 *) data + offset + 26;
1662 /* Natural way to represent framerates here requires unsigned 32 bit
1663 * numerator, which we don't have. For the nasty case, approximate...
1666 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1667 RMDEMUX_GUINT16_GET (data + offset + 24);
1668 if (numerator > G_MAXINT) {
1669 stream->framerate_numerator = (gint) (numerator >> 1);
1670 stream->framerate_denominator = 32768;
1672 stream->framerate_numerator = (gint) numerator;
1673 stream->framerate_denominator = 65536;
1677 GST_DEBUG_OBJECT (rmdemux,
1678 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1679 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1680 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1681 stream->rate, stream->framerate_numerator,
1682 stream->framerate_denominator, stream->subformat, stream->format,
1683 stream->extra_data_size);
1685 case GST_RMDEMUX_STREAM_AUDIO:{
1686 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1687 GST_INFO ("stream version = %u", stream->version);
1688 switch (stream->version) {
1690 stream->fourcc = GST_RM_AUD_14_4;
1691 stream->packet_size = 20;
1692 stream->rate = 8000;
1693 stream->n_channels = 1;
1694 stream->sample_width = 16;
1696 stream->leaf_size = 0;
1700 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1701 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1702 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1703 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1704 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1705 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1706 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1707 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1708 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1709 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1710 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1711 stream->extra_data_size);
1712 if (length - (offset + 73) >= stream->extra_data_size) {
1713 stream->extra_data = (guint8 *) data + offset + 73;
1715 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1716 stream->extra_data_size = 0;
1720 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1721 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1722 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1723 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1724 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1725 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1726 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1727 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1728 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1729 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1730 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1731 stream->extra_data_size);
1732 if (length - (offset + 78) >= stream->extra_data_size) {
1733 stream->extra_data = (guint8 *) data + offset + 78;
1735 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1736 stream->extra_data_size = 0;
1740 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1745 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1746 GST_DEBUG_OBJECT (rmdemux,
1747 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1748 stream->rate, stream->sample_width, stream->n_channels);
1752 case GST_RMDEMUX_STREAM_FILEINFO:
1756 /* Length of this section */
1757 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1758 RMDEMUX_GUINT32_GET (data + offset));
1761 /* Unknown : 00 00 00 00 */
1764 /* Number of variables that would follow (loop iterations) */
1765 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1768 while (element_nb) {
1769 /* Category Id : 00 00 00 XX 00 00 */
1773 offset += re_skip_pascal_string (data + offset);
1775 /* Variable Value Type */
1776 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1777 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1780 /* Variable Value */
1781 offset += re_skip_pascal_string (data + offset);
1787 case GST_RMDEMUX_STREAM_UNKNOWN:
1792 gst_rmdemux_add_stream (rmdemux, stream);
1796 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1801 n = RMDEMUX_GUINT32_GET (data);
1802 id = RMDEMUX_GUINT16_GET (data + 4);
1803 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1805 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1808 /* Point to the next index_stream */
1809 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1811 /* Return the length of the index */
1816 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1821 GstRMDemuxIndex *index;
1823 /* The number of index records */
1826 if (rmdemux->index_stream == NULL)
1829 /* don't parse the index a second time when operating pull-based and
1830 * reaching the end of the file */
1831 if (rmdemux->index_stream->index_length > 0) {
1832 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1836 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1837 rmdemux->index_stream->index = index;
1838 rmdemux->index_stream->index_length = n;
1840 for (i = 0; i < n; i++) {
1841 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1842 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1844 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1845 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1852 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1854 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1855 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1856 rmdemux->chunk_index = 0;
1857 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1858 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1862 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1866 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1868 gst_element_found_tags (GST_ELEMENT (rmdemux), tags);
1872 static GstFlowReturn
1873 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1878 /* store the value */
1879 stream->last_flow = ret;
1881 /* if it's success we can return the value right away */
1882 if (ret == GST_FLOW_OK)
1885 /* any other error that is not-linked can be returned right
1887 if (ret != GST_FLOW_NOT_LINKED)
1890 for (cur = rmdemux->streams; cur; cur = cur->next) {
1891 GstRMDemuxStream *ostream = cur->data;
1893 ret = ostream->last_flow;
1894 /* some other return value (must be SUCCESS but we can return
1895 * other values as well) */
1896 if (ret != GST_FLOW_NOT_LINKED)
1899 /* if we get here, all other pads were unlinked and we return
1900 * NOT_LINKED then */
1906 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1907 GstRMDemuxStream * stream)
1909 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1912 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1913 stream->subpackets->len);
1914 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1915 g_ptr_array_set_size (stream->subpackets, 0);
1918 static GstFlowReturn
1919 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1923 guint packet_size = stream->packet_size;
1924 guint height = stream->subpackets->len;
1925 guint leaf_size = stream->leaf_size;
1928 g_assert (stream->height == height);
1930 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1933 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
1934 GST_BUFFER_OFFSET_NONE, height * packet_size,
1935 GST_PAD_CAPS (stream->pad), &outbuf);
1937 if (ret != GST_FLOW_OK)
1940 for (p = 0; p < height; ++p) {
1941 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1942 guint8 *b_data = GST_BUFFER_DATA (b);
1945 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1947 for (x = 0; x < packet_size / leaf_size; ++x) {
1950 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1951 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1952 memcpy (GST_BUFFER_DATA (outbuf) + leaf_size * idx, b_data, leaf_size);
1953 b_data += leaf_size;
1957 /* some decoders, such as realaudiodec, need to be fed in packet units */
1958 for (p = 0; p < height; ++p) {
1961 subbuf = gst_buffer_create_sub (outbuf, p * packet_size, packet_size);
1963 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1964 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1966 if (stream->discont) {
1967 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1968 stream->discont = FALSE;
1971 gst_buffer_set_caps (subbuf, GST_PAD_CAPS (stream->pad));
1972 ret = gst_pad_push (stream->pad, subbuf);
1973 if (ret != GST_FLOW_OK)
1977 gst_buffer_unref (outbuf);
1981 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1986 static GstFlowReturn
1987 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1988 GstRMDemuxStream * stream)
1992 buf = g_ptr_array_index (stream->subpackets, 0);
1993 g_ptr_array_index (stream->subpackets, 0) = NULL;
1994 g_ptr_array_set_size (stream->subpackets, 0);
1996 buf = gst_rm_utils_descramble_dnet_buffer (buf);
1998 if (stream->discont) {
1999 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2000 stream->discont = FALSE;
2002 return gst_pad_push (stream->pad, buf);
2005 static GstFlowReturn
2006 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
2007 GstRMDemuxStream * stream)
2010 GstBuffer *buf, *outbuf;
2011 guint frames, index, i;
2013 GstClockTime timestamp;
2017 buf = g_ptr_array_index (stream->subpackets, 0);
2018 g_ptr_array_index (stream->subpackets, 0) = NULL;
2019 g_ptr_array_set_size (stream->subpackets, 0);
2021 data = GST_BUFFER_DATA (buf);
2022 timestamp = GST_BUFFER_TIMESTAMP (buf);
2024 frames = (data[1] & 0xf0) >> 4;
2025 index = 2 * frames + 2;
2027 for (i = 0; i < frames; i++) {
2028 guint len = (data[i * 2 + 2] << 8) | data[i * 2 + 3];
2030 outbuf = gst_buffer_create_sub (buf, index, len);
2032 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2033 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2037 if (stream->discont) {
2038 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2039 stream->discont = FALSE;
2041 res = gst_pad_push (stream->pad, outbuf);
2042 if (res != GST_FLOW_OK)
2045 gst_buffer_unref (buf);
2049 static GstFlowReturn
2050 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2051 GstRMDemuxStream * stream)
2055 guint packet_size = stream->packet_size;
2056 guint height = stream->subpackets->len;
2059 g_assert (stream->height == height);
2061 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2062 stream->leaf_size, height);
2064 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
2065 GST_BUFFER_OFFSET_NONE, height * packet_size,
2066 GST_PAD_CAPS (stream->pad), &outbuf);
2068 if (ret != GST_FLOW_OK)
2071 for (p = 0; p < height; ++p) {
2072 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2073 guint8 *b_data = GST_BUFFER_DATA (b);
2076 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
2078 memcpy (GST_BUFFER_DATA (outbuf) + packet_size * p, b_data, packet_size);
2081 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
2082 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
2084 if (stream->discont) {
2085 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2086 stream->discont = FALSE;
2089 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2091 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2092 ret = gst_pad_push (stream->pad, outbuf);
2096 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2101 static GstFlowReturn
2102 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2103 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2107 if (stream->subpackets == NULL)
2108 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2110 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
2111 stream->subpackets_needed, GST_BUFFER_SIZE (buf), keyframe);
2113 if (keyframe && stream->subpackets->len > 0) {
2114 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2117 g_ptr_array_add (stream->subpackets, buf);
2119 if (stream->subpackets->len < stream->subpackets_needed)
2122 g_assert (stream->subpackets->len >= 1);
2124 switch (stream->fourcc) {
2125 case GST_RM_AUD_DNET:
2126 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2128 case GST_RM_AUD_COOK:
2129 case GST_RM_AUD_ATRC:
2130 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2132 case GST_RM_AUD_RAAC:
2133 case GST_RM_AUD_RACP:
2134 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2136 case GST_RM_AUD_SIPR:
2137 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2140 g_assert_not_reached ();
2147 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2148 guint8 * data, GstClockTime timestamp)
2152 GstClockTime ts = timestamp;
2154 if (timestamp == GST_CLOCK_TIME_NONE)
2157 /* only adjust when we have a stream with B frames */
2158 if (stream->format < 0x20200002)
2161 /* Fix timestamp. */
2162 switch (stream->fourcc) {
2163 case GST_RM_VDO_RV10:
2165 case GST_RM_VDO_RV20:
2168 * Bit 1- 2: frame type
2170 * Bit 10-22: sequence number
2173 frame_type = (data[0] >> 6) & 0x03;
2174 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2177 case GST_RM_VDO_RV30:
2181 * Bit 3: skip packet if 1
2182 * Bit 4- 5: frame type
2184 * Bit 13-25: sequence number
2187 frame_type = (data[0] >> 3) & 0x03;
2188 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2191 case GST_RM_VDO_RV40:
2194 * Bit 1: skip packet if 1
2195 * Bit 2- 3: frame type
2197 * Bit 14-26: sequence number
2200 frame_type = (data[0] >> 5) & 0x03;
2201 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2205 goto unknown_version;
2208 switch (frame_type) {
2212 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2214 if (stream->next_ts == -1)
2215 stream->next_ts = timestamp;
2217 timestamp = stream->next_ts;
2218 stream->last_ts = stream->next_ts;
2219 stream->next_ts = ts;
2220 stream->last_seq = stream->next_seq;
2221 stream->next_seq = seq;
2226 GST_LOG_OBJECT (rmdemux, "P frame");
2228 timestamp = stream->last_ts = stream->next_ts;
2229 if (seq < stream->next_seq)
2230 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2232 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2233 stream->last_seq = stream->next_seq;
2234 stream->next_seq = seq;
2239 GST_LOG_OBJECT (rmdemux, "B frame");
2241 if (seq < stream->last_seq) {
2243 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2245 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2250 goto unknown_frame_type;
2254 GST_LOG_OBJECT (rmdemux,
2255 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2256 GST_TIME_ARGS (timestamp));
2263 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2264 ("Unknown version: %i.", stream->version), (NULL));
2265 return GST_FLOW_ERROR;
2270 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2271 frame_type), (NULL));
2272 return GST_FLOW_ERROR;
2276 #define PARSE_NUMBER(data, size, number, label) \
2280 number = GST_READ_UINT16_BE (data); \
2281 if (!(number & 0xc000)) { \
2284 number = GST_READ_UINT32_BE (data); \
2294 static GstFlowReturn
2295 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2296 GstBuffer * in, guint offset, guint16 version,
2297 GstClockTime timestamp, gboolean key)
2300 const guint8 *data, *base;
2303 base = GST_BUFFER_DATA (in);
2304 data = base + offset;
2305 size = GST_BUFFER_SIZE (in) - offset;
2306 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2307 * was previously for that given stream. */
2308 ret = stream->last_flow;
2314 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2315 guint fragment_size;
2316 GstBuffer *fragment;
2318 pkg_header = *data++;
2322 * bit 7: 1=last block in block chain
2323 * bit 6: 1=short header (only one block?)
2325 if ((pkg_header & 0xc0) == 0x40) {
2326 /* skip unknown byte */
2332 if ((pkg_header & 0x40) == 0) {
2333 pkg_subseq = (*data++) & 0x7f;
2340 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2343 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2347 goto not_enough_data;
2349 pkg_seqnum = *data++;
2353 GST_DEBUG_OBJECT (rmdemux,
2354 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2355 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2357 /* calc size of fragment */
2358 if ((pkg_header & 0xc0) == 0x80) {
2359 fragment_size = pkg_offset;
2361 if ((pkg_header & 0xc0) == 0)
2362 fragment_size = size;
2364 fragment_size = pkg_length;
2366 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2368 /* get the fragment */
2369 fragment = gst_buffer_create_sub (in, data - base, fragment_size);
2371 if (pkg_subseq == 1) {
2372 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2373 gst_adapter_clear (stream->adapter);
2374 stream->frag_current = 0;
2375 stream->frag_count = 0;
2376 stream->frag_length = pkg_length;
2377 } else if (pkg_subseq == 0) {
2378 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2379 stream->frag_current = 0;
2380 stream->frag_count = 0;
2381 stream->frag_length = fragment_size;
2384 /* put fragment in adapter */
2385 gst_adapter_push (stream->adapter, fragment);
2386 stream->frag_offset[stream->frag_count] = stream->frag_current;
2387 stream->frag_current += fragment_size;
2388 stream->frag_count++;
2390 if (stream->frag_count > MAX_FRAGS)
2391 goto too_many_fragments;
2393 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2394 stream->frag_current, stream->frag_length);
2396 /* flush fragment when complete */
2397 if (stream->frag_current >= stream->frag_length) {
2403 /* calculate header size, which is:
2404 * 1 byte for the number of fragments - 1
2405 * for each fragment:
2406 * 4 bytes 0x00000001 little endian
2407 * 4 bytes fragment offset
2409 * This is also the matroska header for realvideo, the decoder needs the
2410 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2411 * in front of the data.
2413 header_size = 1 + (8 * (stream->frag_count));
2415 GST_DEBUG_OBJECT (rmdemux,
2416 "fragmented completed. count %d, header_size %u", stream->frag_count,
2419 avail = gst_adapter_available (stream->adapter);
2421 out = gst_buffer_new_and_alloc (header_size + avail);
2422 outdata = GST_BUFFER_DATA (out);
2425 *outdata++ = stream->frag_count - 1;
2426 for (i = 0; i < stream->frag_count; i++) {
2427 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2429 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2433 /* copy packet data after the header now */
2434 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2435 gst_adapter_flush (stream->adapter, avail);
2437 stream->frag_current = 0;
2438 stream->frag_count = 0;
2439 stream->frag_length = 0;
2441 gst_buffer_set_caps (out, GST_PAD_CAPS (stream->pad));
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_TIMESTAMP (out) = timestamp;
2457 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2458 GST_TIME_ARGS (timestamp));
2460 if (stream->discont) {
2461 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2462 stream->discont = FALSE;
2466 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DELTA_UNIT);
2469 ret = gst_pad_push (stream->pad, out);
2470 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2471 if (ret != GST_FLOW_OK)
2474 timestamp = GST_CLOCK_TIME_NONE;
2476 data += fragment_size;
2477 size -= fragment_size;
2479 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2481 gst_buffer_unref (in);
2488 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2490 gst_buffer_unref (in);
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 gst_buffer_unref (in);
2499 return 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)
2508 GstFlowReturn ret, cret;
2513 data = GST_BUFFER_DATA (in) + offset;
2514 size = GST_BUFFER_SIZE (in) - offset;
2516 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
2517 GST_BUFFER_OFFSET_NONE, size, GST_PAD_CAPS (stream->pad), &buffer);
2519 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2520 if (ret != GST_FLOW_OK)
2523 memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, size);
2525 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2526 timestamp -= rmdemux->first_ts;
2530 if (rmdemux->base_ts != -1)
2531 timestamp += rmdemux->base_ts;
2533 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2535 if (stream->needs_descrambling) {
2536 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2537 GST_TIME_ARGS (timestamp));
2538 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2540 GST_LOG_OBJECT (rmdemux,
2541 "Pushing buffer of size %d, timestamp %" GST_TIME_FORMAT "to pad %s",
2542 GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (timestamp),
2543 GST_PAD_NAME (stream->pad));
2545 if (stream->discont) {
2546 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2547 stream->discont = FALSE;
2549 ret = gst_pad_push (stream->pad, buffer);
2552 gst_buffer_unref (in);
2559 GST_DEBUG_OBJECT (rmdemux, "pad alloc returned %d", ret);
2560 gst_buffer_unref (in);
2565 static GstFlowReturn
2566 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2569 GstRMDemuxStream *stream;
2571 GstFlowReturn cret, ret;
2572 GstClockTime timestamp;
2574 guint8 *data, *base;
2578 base = data = GST_BUFFER_DATA (in);
2579 size = GST_BUFFER_SIZE (in);
2582 id = RMDEMUX_GUINT16_GET (data);
2584 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2585 if (!stream || !stream->pad)
2586 goto unknown_stream;
2588 /* timestamp in Msec */
2589 ts = RMDEMUX_GUINT32_GET (data + 2);
2590 timestamp = ts * GST_MSECOND;
2592 gst_segment_set_last_stop (&rmdemux->segment, GST_FORMAT_TIME, timestamp);
2594 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2595 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2596 GST_TIME_ARGS (timestamp), size, version, ts);
2598 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2599 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2600 GST_TIME_ARGS (timestamp));
2601 rmdemux->first_ts = timestamp;
2604 /* skip stream_id and timestamp */
2609 flags = GST_READ_UINT8 (data + 1);
2614 /* version 1 has an extra byte */
2619 key = (flags & 0x02) != 0;
2620 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2622 if (rmdemux->need_newsegment) {
2625 event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
2626 rmdemux->segment.format, rmdemux->segment.start,
2627 rmdemux->segment.stop, rmdemux->segment.time);
2629 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2630 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2632 gst_rmdemux_send_event (rmdemux, event);
2633 rmdemux->need_newsegment = FALSE;
2636 if (stream->pending_tags != NULL) {
2637 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2638 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (rmdemux), stream->pad,
2639 stream->pending_tags);
2640 stream->pending_tags = NULL;
2643 if ((rmdemux->offset + size) <= stream->seek_offset) {
2644 GST_DEBUG_OBJECT (rmdemux,
2645 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2646 stream->id, stream->seek_offset, rmdemux->offset, size);
2651 /* do special headers */
2652 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2654 gst_rmdemux_parse_video_packet (rmdemux, stream, in, data - base,
2655 version, timestamp, key);
2656 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2658 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, data - base,
2659 version, timestamp, key);
2663 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2671 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2678 gst_rmdemux_plugin_init (GstPlugin * plugin)
2680 return gst_element_register (plugin, "rmdemux",
2681 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);