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;
403 for (cur = rmdemux->streams; cur; cur = cur->next) {
404 GstRMDemuxStream *stream = cur->data;
406 /* Search backwards through this stream's index until we find the first
407 * timestamp before our target time */
408 for (i = stream->index_length - 1; i >= 0; i--) {
409 if (stream->index[i].offset <= target) {
410 /* Set the seek_offset for the stream so we don't bother parsing it
411 * until we've passed that point */
412 stream->seek_offset = stream->index[i].offset;
413 rmdemux->offset = stream->index[i].offset;
423 find_seek_offset_time (GstRMDemux * rmdemux, GstClockTime time)
426 gboolean ret = FALSE;
428 GstClockTime earliest = GST_CLOCK_TIME_NONE;
431 for (cur = rmdemux->streams; cur; cur = cur->next, n_stream++) {
432 GstRMDemuxStream *stream = cur->data;
434 /* Search backwards through this stream's index until we find the first
435 * timestamp before our target time */
436 for (i = stream->index_length - 1; i >= 0; i--) {
437 if (stream->index[i].timestamp <= time) {
438 /* Set the seek_offset for the stream so we don't bother parsing it
439 * until we've passed that point */
440 stream->seek_offset = stream->index[i].offset;
442 /* If it's also the earliest timestamp we've seen of all streams, then
445 if (earliest == GST_CLOCK_TIME_NONE ||
446 stream->index[i].timestamp < earliest) {
447 earliest = stream->index[i].timestamp;
448 rmdemux->offset = stream->index[i].offset;
449 GST_DEBUG_OBJECT (rmdemux,
450 "We're looking for %" GST_TIME_FORMAT
451 " and we found that stream %d has the latest index at %"
452 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start), n_stream,
453 GST_TIME_ARGS (earliest));
461 stream->discont = TRUE;
467 gst_rmdemux_perform_seek (GstRMDemux * rmdemux, GstEvent * event)
475 GstSeekType cur_type, stop_type;
480 GST_DEBUG_OBJECT (rmdemux, "seek with event");
482 gst_event_parse_seek (event, &rate, &format, &flags,
483 &cur_type, &cur, &stop_type, &stop);
485 /* we can only seek on time */
486 if (format != GST_FORMAT_TIME) {
487 GST_DEBUG_OBJECT (rmdemux, "can only seek on TIME");
490 /* cannot yet do backwards playback */
492 GST_DEBUG_OBJECT (rmdemux, "can only seek with positive rate, not %lf",
497 GST_DEBUG_OBJECT (rmdemux, "seek without event");
503 GST_DEBUG_OBJECT (rmdemux, "seek, rate %g", rate);
505 flush = flags & GST_SEEK_FLAG_FLUSH;
507 /* first step is to unlock the streaming thread if it is
508 * blocked in a chain call, we do this by starting the flush. */
510 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_start ());
511 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_start ());
513 gst_pad_pause_task (rmdemux->sinkpad);
516 GST_LOG_OBJECT (rmdemux, "Done starting flushes");
518 /* now grab the stream lock so that streaming cannot continue, for
519 * non flushing seeks when the element is in PAUSED this could block
521 GST_PAD_STREAM_LOCK (rmdemux->sinkpad);
523 GST_LOG_OBJECT (rmdemux, "Took streamlock");
525 /* close current segment first */
526 if (rmdemux->segment_running && !flush) {
529 newseg = gst_event_new_new_segment (TRUE, rmdemux->segment.rate,
530 GST_FORMAT_TIME, rmdemux->segment.start,
531 rmdemux->segment.last_stop, rmdemux->segment.time);
533 gst_rmdemux_send_event (rmdemux, newseg);
537 gst_segment_set_seek (&rmdemux->segment, rate, format, flags,
538 cur_type, cur, stop_type, stop, &update);
541 GST_DEBUG_OBJECT (rmdemux, "segment positions set to %" GST_TIME_FORMAT "-%"
542 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start),
543 GST_TIME_ARGS (rmdemux->segment.stop));
545 /* we need to stop flushing on the sinkpad as we're going to use it
546 * next. We can do this as we have the STREAM lock now. */
547 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop ());
549 GST_LOG_OBJECT (rmdemux, "Pushed FLUSH_STOP event");
551 /* For each stream, find the first index offset equal to or before our seek
552 * target. Of these, find the smallest offset. That's where we seek to.
554 * Then we pull 4 bytes from that offset, and validate that we've seeked to a
555 * what looks like a plausible packet.
556 * If that fails, restart, with the seek target set to one less than the
557 * offset we just tried. If we run out of places to try, treat that as a fatal
560 if (!find_seek_offset_time (rmdemux, rmdemux->segment.last_stop)) {
561 GST_LOG_OBJECT (rmdemux, "Failed to find seek offset by time");
566 GST_LOG_OBJECT (rmdemux, "Validating offset %u", rmdemux->offset);
567 validated = gst_rmdemux_validate_offset (rmdemux);
569 GST_INFO_OBJECT (rmdemux, "Failed to validate offset at %u",
571 if (!find_seek_offset_bytes (rmdemux, rmdemux->offset - 1)) {
575 validated = gst_rmdemux_validate_offset (rmdemux);
578 GST_LOG_OBJECT (rmdemux, "Found final offset. Excellent!");
580 /* now we have a new position, prepare for streaming again */
582 /* Reset the demuxer state */
583 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
586 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop ());
588 /* must send newsegment event from streaming thread, so just set flag */
589 rmdemux->need_newsegment = TRUE;
591 /* notify start of new segment */
592 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
593 gst_element_post_message (GST_ELEMENT_CAST (rmdemux),
594 gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
595 GST_FORMAT_TIME, rmdemux->segment.last_stop));
598 /* restart our task since it might have been stopped when we did the
600 gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
605 /* streaming can continue now */
606 GST_PAD_STREAM_UNLOCK (rmdemux->sinkpad);
612 GST_DEBUG_OBJECT (rmdemux, "seek failed");
619 gst_rmdemux_src_query (GstPad * pad, GstQuery * query)
621 gboolean res = FALSE;
624 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
626 switch (GST_QUERY_TYPE (query)) {
627 case GST_QUERY_POSITION:
628 GST_DEBUG_OBJECT (rmdemux, "Position query: no idea from demuxer!");
630 case GST_QUERY_DURATION:{
633 gst_query_parse_duration (query, &fmt, NULL);
634 if (fmt == GST_FORMAT_TIME) {
635 GST_OBJECT_LOCK (rmdemux);
636 if (G_LIKELY (rmdemux->running)) {
637 gst_query_set_duration (query, GST_FORMAT_TIME, rmdemux->duration);
638 GST_DEBUG_OBJECT (rmdemux, "duration set to %" GST_TIME_FORMAT,
639 GST_TIME_ARGS (rmdemux->duration));
642 GST_OBJECT_UNLOCK (rmdemux);
646 case GST_QUERY_SEEKING:{
649 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
650 if (fmt == GST_FORMAT_TIME) {
651 GST_OBJECT_LOCK (rmdemux);
652 if (G_LIKELY (rmdemux->running)) {
653 gst_query_set_seeking (query, GST_FORMAT_TIME, rmdemux->seekable,
654 0, rmdemux->duration);
657 GST_OBJECT_UNLOCK (rmdemux);
662 res = gst_pad_query_default (pad, query);
666 gst_object_unref (rmdemux);
670 static const GstQueryType *
671 gst_rmdemux_src_query_types (GstPad * pad)
673 static const GstQueryType query_types[] = {
684 gst_rmdemux_reset (GstRMDemux * rmdemux)
688 GST_OBJECT_LOCK (rmdemux);
689 rmdemux->running = FALSE;
690 GST_OBJECT_UNLOCK (rmdemux);
692 for (cur = rmdemux->streams; cur; cur = cur->next) {
693 GstRMDemuxStream *stream = cur->data;
695 g_object_unref (stream->adapter);
696 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
697 gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
698 if (stream->pending_tags)
699 gst_tag_list_free (stream->pending_tags);
700 if (stream->subpackets)
701 g_ptr_array_free (stream->subpackets, TRUE);
702 g_free (stream->index);
705 g_slist_free (rmdemux->streams);
706 rmdemux->streams = NULL;
707 rmdemux->n_audio_streams = 0;
708 rmdemux->n_video_streams = 0;
710 gst_adapter_clear (rmdemux->adapter);
711 rmdemux->state = RMDEMUX_STATE_HEADER;
712 rmdemux->have_pads = FALSE;
714 gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
715 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
716 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
717 rmdemux->need_newsegment = TRUE;
720 static GstStateChangeReturn
721 gst_rmdemux_change_state (GstElement * element, GstStateChange transition)
723 GstRMDemux *rmdemux = GST_RMDEMUX (element);
724 GstStateChangeReturn res;
726 switch (transition) {
727 case GST_STATE_CHANGE_NULL_TO_READY:
729 case GST_STATE_CHANGE_READY_TO_PAUSED:
730 rmdemux->state = RMDEMUX_STATE_HEADER;
731 rmdemux->have_pads = FALSE;
732 gst_segment_init (&rmdemux->segment, GST_FORMAT_TIME);
733 rmdemux->running = FALSE;
735 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
741 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
743 switch (transition) {
744 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
746 case GST_STATE_CHANGE_PAUSED_TO_READY:{
747 gst_rmdemux_reset (rmdemux);
750 case GST_STATE_CHANGE_READY_TO_NULL:
759 /* this function is called when the pad is activated and should start
762 * We check if we can do random access to decide if we work push or
766 gst_rmdemux_sink_activate (GstPad * sinkpad)
768 if (gst_pad_check_pull_range (sinkpad)) {
769 return gst_pad_activate_pull (sinkpad, TRUE);
771 return gst_pad_activate_push (sinkpad, TRUE);
775 /* this function gets called when we activate ourselves in push mode.
776 * We cannot seek (ourselves) in the stream */
778 gst_rmdemux_sink_activate_push (GstPad * pad, gboolean active)
782 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
784 GST_DEBUG_OBJECT (rmdemux, "activate_push");
786 rmdemux->seekable = FALSE;
791 /* this function gets called when we activate ourselves in pull mode.
792 * We can perform random access to the resource and we start a task
793 * to start reading */
795 gst_rmdemux_sink_activate_pull (GstPad * pad, gboolean active)
799 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
801 GST_DEBUG_OBJECT (rmdemux, "activate_pull");
804 rmdemux->seekable = TRUE;
806 rmdemux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
807 rmdemux->data_offset = G_MAXUINT;
809 return gst_pad_start_task (pad, (GstTaskFunction) gst_rmdemux_loop, pad);
811 return gst_pad_stop_task (pad);
815 /* random access mode - just pass over to our chain function */
817 gst_rmdemux_loop (GstPad * pad)
821 GstFlowReturn ret = GST_FLOW_OK;
824 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
826 GST_LOG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
827 rmdemux->loop_state, rmdemux->offset);
829 switch (rmdemux->state) {
830 case RMDEMUX_STATE_HEADER:
833 case RMDEMUX_STATE_HEADER_DATA:
836 case RMDEMUX_STATE_DATA_PACKET:
837 size = rmdemux->avg_packet_size;
839 case RMDEMUX_STATE_EOS:
840 GST_LOG_OBJECT (rmdemux, "At EOS, pausing task");
841 ret = GST_FLOW_UNEXPECTED;
844 GST_LOG_OBJECT (rmdemux, "Default: requires %d bytes (state is %d)",
845 (int) rmdemux->size, rmdemux->state);
846 size = rmdemux->size;
849 ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
850 if (ret != GST_FLOW_OK) {
851 if (rmdemux->offset == rmdemux->index_offset) {
852 /* The index isn't available so forget about it */
853 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
854 rmdemux->offset = rmdemux->data_offset;
855 GST_OBJECT_LOCK (rmdemux);
856 rmdemux->running = TRUE;
857 rmdemux->seekable = FALSE;
858 GST_OBJECT_UNLOCK (rmdemux);
861 GST_DEBUG_OBJECT (rmdemux, "Unable to pull %d bytes at offset 0x%08x "
862 "(pull_range returned flow %s, state is %d)", (gint) size,
863 rmdemux->offset, gst_flow_get_name (ret), GST_STATE (rmdemux));
868 size = GST_BUFFER_SIZE (buffer);
870 /* Defer to the chain function */
871 ret = gst_rmdemux_chain (pad, buffer);
872 if (ret != GST_FLOW_OK) {
873 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
878 rmdemux->offset += size;
880 switch (rmdemux->loop_state) {
881 case RMDEMUX_LOOP_STATE_HEADER:
882 if (rmdemux->offset >= rmdemux->data_offset) {
883 /* It's the end of the header */
884 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
885 rmdemux->offset = rmdemux->index_offset;
888 case RMDEMUX_LOOP_STATE_INDEX:
889 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
890 if (rmdemux->index_offset == 0) {
891 /* We've read the last index */
892 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
893 rmdemux->offset = rmdemux->data_offset;
894 GST_OBJECT_LOCK (rmdemux);
895 rmdemux->running = TRUE;
896 GST_OBJECT_UNLOCK (rmdemux);
898 /* Get the next index */
899 rmdemux->offset = rmdemux->index_offset;
903 case RMDEMUX_LOOP_STATE_DATA:
912 const gchar *reason = gst_flow_get_name (ret);
914 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
915 rmdemux->segment_running = FALSE;
916 gst_pad_pause_task (rmdemux->sinkpad);
918 if (ret == GST_FLOW_UNEXPECTED) {
919 /* perform EOS logic */
920 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
923 /* for segment playback we need to post when (in stream time)
924 * we stopped, this is either stop (when set) or the duration. */
925 if ((stop = rmdemux->segment.stop) == -1)
926 stop = rmdemux->segment.duration;
928 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
929 gst_element_post_message (GST_ELEMENT (rmdemux),
930 gst_message_new_segment_done (GST_OBJECT (rmdemux),
931 GST_FORMAT_TIME, stop));
933 /* normal playback, send EOS to all linked pads */
934 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
935 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
937 } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_UNEXPECTED) {
938 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
939 (NULL), ("stream stopped, reason %s", reason));
940 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
947 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
951 for (i = 0; i < 4; i++) {
952 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
960 gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer)
962 GstFlowReturn ret = GST_FLOW_OK;
967 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
969 if (rmdemux->base_ts == -1) {
970 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
971 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
972 GST_TIME_ARGS (rmdemux->base_ts));
975 gst_adapter_push (rmdemux->adapter, buffer);
977 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %d",
978 GST_BUFFER_SIZE (buffer));
981 avail = gst_adapter_available (rmdemux->adapter);
983 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
984 switch (rmdemux->state) {
985 case RMDEMUX_STATE_HEADER:
987 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
990 data = gst_adapter_peek (rmdemux->adapter, HEADER_SIZE);
992 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
993 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
994 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
996 /* Sanity-check. We assume that the FOURCC is printable ASCII */
997 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
998 /* Failed. Remain in HEADER state, try again... We flush only
999 * the actual FOURCC, not the entire header, because we could
1000 * need to resync anywhere at all... really, this should never
1002 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
1004 gst_adapter_flush (rmdemux->adapter, 4);
1009 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1011 " size=%08x object_version=%d",
1012 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1013 rmdemux->object_version);
1015 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1017 switch (rmdemux->object_id) {
1018 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1019 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1021 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1022 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1024 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1025 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1027 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1028 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1030 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1031 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1033 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1034 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1037 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1042 case RMDEMUX_STATE_HEADER_UNKNOWN:
1044 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1047 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1048 GST_FOURCC_ARGS (rmdemux->object_id));
1050 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1051 rmdemux->state = RMDEMUX_STATE_HEADER;
1054 case RMDEMUX_STATE_HEADER_RMF:
1056 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1059 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1060 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1062 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1065 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1066 rmdemux->state = RMDEMUX_STATE_HEADER;
1069 case RMDEMUX_STATE_HEADER_PROP:
1071 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1073 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1075 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1077 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1078 rmdemux->state = RMDEMUX_STATE_HEADER;
1081 case RMDEMUX_STATE_HEADER_MDPR:
1083 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1085 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1087 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1089 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1090 rmdemux->state = RMDEMUX_STATE_HEADER;
1093 case RMDEMUX_STATE_HEADER_CONT:
1095 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1097 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1099 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1101 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1102 rmdemux->state = RMDEMUX_STATE_HEADER;
1105 case RMDEMUX_STATE_HEADER_DATA:
1107 /* If we haven't already done so then signal there are no more pads */
1108 if (!rmdemux->have_pads) {
1109 GST_LOG_OBJECT (rmdemux, "no more pads");
1110 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1111 rmdemux->have_pads = TRUE;
1114 /* The actual header is only 8 bytes */
1115 rmdemux->size = DATA_SIZE;
1116 GST_LOG_OBJECT (rmdemux, "data available %d",
1117 gst_adapter_available (rmdemux->adapter));
1118 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1121 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1123 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1125 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1127 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1130 case RMDEMUX_STATE_HEADER_INDX:
1132 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1134 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1136 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1138 /* Only flush the header */
1139 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1141 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1144 case RMDEMUX_STATE_INDX_DATA:
1146 /* There's not always an data to get... */
1147 if (rmdemux->size > 0) {
1148 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1151 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1153 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1155 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1158 rmdemux->state = RMDEMUX_STATE_HEADER;
1161 case RMDEMUX_STATE_DATA_PACKET:
1163 if (gst_adapter_available (rmdemux->adapter) < 2)
1166 data = gst_adapter_peek (rmdemux->adapter, 2);
1167 version = RMDEMUX_GUINT16_GET (data);
1168 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1170 if (version == 0 || version == 1) {
1173 if (gst_adapter_available (rmdemux->adapter) < 4)
1175 data = gst_adapter_peek (rmdemux->adapter, 4);
1177 length = RMDEMUX_GUINT16_GET (data + 2);
1178 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1181 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1182 /* Invalid, just drop it */
1183 gst_adapter_flush (rmdemux->adapter, 4);
1187 avail = gst_adapter_available (rmdemux->adapter);
1191 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1194 /* flush version and length */
1195 gst_adapter_flush (rmdemux->adapter, 4);
1198 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1200 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1201 rmdemux->chunk_index++;
1204 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1205 rmdemux->state = RMDEMUX_STATE_HEADER;
1208 gst_adapter_flush (rmdemux->adapter, 2);
1210 if (rmdemux->data_offset == 0) {
1211 GST_LOG_OBJECT (rmdemux,
1212 "No further data, internal demux state EOS");
1213 rmdemux->state = RMDEMUX_STATE_EOS;
1215 rmdemux->state = RMDEMUX_STATE_HEADER;
1219 case RMDEMUX_STATE_EOS:
1220 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1223 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1232 static GstRMDemuxStream *
1233 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1237 for (cur = rmdemux->streams; cur; cur = cur->next) {
1238 GstRMDemuxStream *stream = cur->data;
1240 if (stream->id == id) {
1249 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1253 for (cur = rmdemux->streams; cur; cur = cur->next) {
1254 GstRMDemuxStream *stream = cur->data;
1256 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1257 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1259 switch (GST_EVENT_TYPE (event)) {
1260 case GST_EVENT_FLUSH_STOP:
1261 stream->last_ts = -1;
1262 stream->next_ts = -1;
1263 stream->last_seq = -1;
1264 stream->next_seq = -1;
1265 stream->last_flow = GST_FLOW_OK;
1270 gst_event_ref (event);
1271 gst_pad_push_event (stream->pad, event);
1273 gst_event_unref (event);
1277 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1279 GstCaps *stream_caps = NULL;
1280 const gchar *codec_tag = NULL;
1281 gchar *codec_name = NULL;
1284 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1285 char *name = g_strdup_printf ("video_%02d", rmdemux->n_video_streams);
1288 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1291 codec_tag = GST_TAG_VIDEO_CODEC;
1293 switch (stream->fourcc) {
1294 case GST_RM_VDO_RV10:
1297 case GST_RM_VDO_RV20:
1300 case GST_RM_VDO_RV30:
1303 case GST_RM_VDO_RV40:
1307 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1308 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1309 GST_WARNING_OBJECT (rmdemux,
1310 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1311 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1316 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1318 "format", G_TYPE_INT,
1319 (int) stream->format,
1320 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1324 gst_caps_set_simple (stream_caps,
1325 "width", G_TYPE_INT, stream->width,
1326 "height", G_TYPE_INT, stream->height,
1327 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1328 stream->framerate_denominator, NULL);
1330 rmdemux->n_video_streams++;
1332 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1333 char *name = g_strdup_printf ("audio_%02d", rmdemux->n_audio_streams);
1336 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1337 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1340 codec_tag = GST_TAG_AUDIO_CODEC;
1342 switch (stream->fourcc) {
1343 /* Older RealAudio Codecs */
1344 case GST_RM_AUD_14_4:
1348 case GST_RM_AUD_28_8:
1352 /* DolbyNet (Dolby AC3, low bitrate) */
1353 case GST_RM_AUD_DNET:
1355 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1356 (int) stream->rate, NULL);
1357 stream->needs_descrambling = TRUE;
1358 stream->subpackets_needed = 1;
1359 stream->subpackets = NULL;
1363 case GST_RM_AUD_RAAC:
1364 case GST_RM_AUD_RACP:
1366 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1367 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1368 if (stream->extra_data_size > 0) {
1369 /* strip off an unknown byte in the extra data */
1370 stream->extra_data_size--;
1371 stream->extra_data++;
1373 stream->needs_descrambling = TRUE;
1374 stream->subpackets_needed = 1;
1375 stream->subpackets = NULL;
1379 case GST_RM_AUD_ATRC:
1380 stream_caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
1381 stream->needs_descrambling = TRUE;
1382 stream->subpackets_needed = stream->height;
1383 stream->subpackets = NULL;
1386 /* RealAudio G2 audio */
1387 case GST_RM_AUD_COOK:
1389 stream->needs_descrambling = TRUE;
1390 stream->subpackets_needed = stream->height;
1391 stream->subpackets = NULL;
1394 /* RALF is lossless */
1395 case GST_RM_AUD_RALF:
1396 GST_DEBUG_OBJECT (rmdemux, "RALF");
1397 stream_caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
1400 case GST_RM_AUD_SIPR:
1402 if (stream->flavor > 3) {
1403 GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
1409 GST_DEBUG_OBJECT (rmdemux, "SIPR");
1410 stream_caps = gst_caps_new_simple ("audio/x-sipro", NULL);
1411 stream->needs_descrambling = TRUE;
1412 stream->subpackets_needed = stream->height;
1413 stream->subpackets = NULL;
1414 stream->leaf_size = sipr_subpk_size[stream->flavor];
1419 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1420 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1421 GST_WARNING_OBJECT (rmdemux,
1422 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1423 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1429 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1430 (int) version, NULL);
1434 gst_caps_set_simple (stream_caps,
1435 "flavor", G_TYPE_INT, (int) stream->flavor,
1436 "rate", G_TYPE_INT, (int) stream->rate,
1437 "channels", G_TYPE_INT, (int) stream->n_channels,
1438 "width", G_TYPE_INT, (int) stream->sample_width,
1439 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1440 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1441 "bitrate", G_TYPE_INT, (int) stream->bitrate,
1442 "height", G_TYPE_INT, (int) stream->height, NULL);
1444 rmdemux->n_audio_streams++;
1446 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1452 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1453 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1454 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1455 g_slist_length (rmdemux->streams));
1457 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1460 if (stream->pad && stream_caps) {
1462 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1463 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1465 /* add codec_data if there is any */
1466 if (stream->extra_data_size > 0) {
1469 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1470 memcpy (GST_BUFFER_DATA (buffer), stream->extra_data,
1471 stream->extra_data_size);
1473 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1476 gst_buffer_unref (buffer);
1479 gst_pad_use_fixed_caps (stream->pad);
1481 gst_pad_set_caps (stream->pad, stream_caps);
1482 gst_pad_set_event_function (stream->pad,
1483 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1484 gst_pad_set_query_type_function (stream->pad,
1485 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query_types));
1486 gst_pad_set_query_function (stream->pad,
1487 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1489 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1490 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1491 gst_pad_set_active (stream->pad, TRUE);
1492 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1494 codec_name = gst_pb_utils_get_codec_description (stream_caps);
1496 /* save for later, we must send the tags after the newsegment event */
1497 if (codec_tag != NULL && codec_name != NULL) {
1498 if (stream->pending_tags == NULL)
1499 stream->pending_tags = gst_tag_list_new ();
1500 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1501 codec_tag, codec_name, NULL);
1502 g_free (codec_name);
1509 gst_caps_unref (stream_caps);
1513 re_skip_pascal_string (const guint8 * ptr)
1523 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1525 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1526 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1530 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1532 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1533 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1534 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1535 RMDEMUX_GUINT32_GET (data + 8));
1536 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1537 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1538 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1539 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1541 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1542 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1544 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1545 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1546 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1547 rmdemux->index_offset);
1548 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1549 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1550 rmdemux->data_offset);
1551 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1552 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1556 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1558 GstRMDemuxStream *stream;
1559 char *stream1_type_string;
1560 char *stream2_type_string;
1564 guint32 max_bitrate;
1565 guint32 avg_bitrate;
1567 stream = g_new0 (GstRMDemuxStream, 1);
1569 stream->id = RMDEMUX_GUINT16_GET (data);
1570 stream->index = NULL;
1571 stream->seek_offset = 0;
1572 stream->last_ts = -1;
1573 stream->next_ts = -1;
1574 stream->last_flow = GST_FLOW_OK;
1575 stream->discont = TRUE;
1576 stream->adapter = gst_adapter_new ();
1577 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1579 /* parse the bitrates */
1580 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1581 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1582 stream->bitrate = avg_bitrate;
1583 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1584 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1585 if (max_bitrate != 0) {
1586 if (stream->pending_tags == NULL)
1587 stream->pending_tags = gst_tag_list_new ();
1588 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1589 GST_TAG_MAXIMUM_BITRATE, max_bitrate, NULL);
1591 if (avg_bitrate != 0) {
1592 if (stream->pending_tags == NULL)
1593 stream->pending_tags = gst_tag_list_new ();
1594 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1595 GST_TAG_BITRATE, avg_bitrate, NULL);
1599 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1600 length - offset, &str_len);
1602 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1603 length - offset, &str_len);
1606 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1608 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1609 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1611 * so, we should not rely on it to know which stream type it is
1614 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1615 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1617 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1618 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1619 } else if (strcmp (stream2_type_string,
1620 "video/x-pn-multirate-realvideo") == 0) {
1621 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1622 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1623 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1624 } else if (strcmp (stream2_type_string,
1625 "audio/x-pn-multirate-realaudio") == 0) {
1626 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1627 } else if (strcmp (stream2_type_string,
1628 "audio/x-pn-multirate-realaudio-live") == 0) {
1629 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1630 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1631 /* Another audio type found in the real testsuite */
1632 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1633 } else if (strcmp (stream1_type_string, "") == 0 &&
1634 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1635 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1637 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1638 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1639 stream1_type_string, stream2_type_string);
1641 g_free (stream1_type_string);
1642 g_free (stream2_type_string);
1646 stream->subtype = stream_type;
1647 switch (stream_type) {
1649 case GST_RMDEMUX_STREAM_VIDEO:
1650 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1651 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1652 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1653 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1654 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1655 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1656 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1657 stream->extra_data_size = length - (offset + 26);
1658 stream->extra_data = (guint8 *) data + offset + 26;
1659 /* Natural way to represent framerates here requires unsigned 32 bit
1660 * numerator, which we don't have. For the nasty case, approximate...
1663 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1664 RMDEMUX_GUINT16_GET (data + offset + 24);
1665 if (numerator > G_MAXINT) {
1666 stream->framerate_numerator = (gint) (numerator >> 1);
1667 stream->framerate_denominator = 32768;
1669 stream->framerate_numerator = (gint) numerator;
1670 stream->framerate_denominator = 65536;
1674 GST_DEBUG_OBJECT (rmdemux,
1675 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1676 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1677 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1678 stream->rate, stream->framerate_numerator,
1679 stream->framerate_denominator, stream->subformat, stream->format,
1680 stream->extra_data_size);
1682 case GST_RMDEMUX_STREAM_AUDIO:{
1683 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1684 GST_INFO ("stream version = %u", stream->version);
1685 switch (stream->version) {
1687 stream->fourcc = GST_RM_AUD_14_4;
1688 stream->packet_size = 20;
1689 stream->rate = 8000;
1690 stream->n_channels = 1;
1691 stream->sample_width = 16;
1693 stream->leaf_size = 0;
1697 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1698 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1699 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1700 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1701 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1702 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1703 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1704 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1705 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1706 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1707 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1708 stream->extra_data_size);
1709 if (length - (offset + 73) >= stream->extra_data_size) {
1710 stream->extra_data = (guint8 *) data + offset + 73;
1712 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1713 stream->extra_data_size = 0;
1717 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1718 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1719 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1720 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1721 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1722 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1723 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1724 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1725 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1726 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1727 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1728 stream->extra_data_size);
1729 if (length - (offset + 78) >= stream->extra_data_size) {
1730 stream->extra_data = (guint8 *) data + offset + 78;
1732 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1733 stream->extra_data_size = 0;
1737 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1742 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1743 GST_DEBUG_OBJECT (rmdemux,
1744 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1745 stream->rate, stream->sample_width, stream->n_channels);
1749 case GST_RMDEMUX_STREAM_FILEINFO:
1753 /* Length of this section */
1754 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1755 RMDEMUX_GUINT32_GET (data + offset));
1758 /* Unknown : 00 00 00 00 */
1761 /* Number of variables that would follow (loop iterations) */
1762 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1765 while (element_nb) {
1766 /* Category Id : 00 00 00 XX 00 00 */
1770 offset += re_skip_pascal_string (data + offset);
1772 /* Variable Value Type */
1773 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1774 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1777 /* Variable Value */
1778 offset += re_skip_pascal_string (data + offset);
1784 case GST_RMDEMUX_STREAM_UNKNOWN:
1789 gst_rmdemux_add_stream (rmdemux, stream);
1793 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1798 n = RMDEMUX_GUINT32_GET (data);
1799 id = RMDEMUX_GUINT16_GET (data + 4);
1800 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1802 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1805 /* Point to the next index_stream */
1806 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1808 /* Return the length of the index */
1813 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1818 GstRMDemuxIndex *index;
1820 /* The number of index records */
1823 if (rmdemux->index_stream == NULL)
1826 /* don't parse the index a second time when operating pull-based and
1827 * reaching the end of the file */
1828 if (rmdemux->index_stream->index_length > 0) {
1829 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1833 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1834 rmdemux->index_stream->index = index;
1835 rmdemux->index_stream->index_length = n;
1837 for (i = 0; i < n; i++) {
1838 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1839 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1841 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1842 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1849 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1851 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1852 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1853 rmdemux->chunk_index = 0;
1854 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1855 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1859 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1863 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1865 gst_element_found_tags (GST_ELEMENT (rmdemux), tags);
1869 static GstFlowReturn
1870 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1875 /* store the value */
1876 stream->last_flow = ret;
1878 /* if it's success we can return the value right away */
1879 if (ret == GST_FLOW_OK)
1882 /* any other error that is not-linked can be returned right
1884 if (ret != GST_FLOW_NOT_LINKED)
1887 for (cur = rmdemux->streams; cur; cur = cur->next) {
1888 GstRMDemuxStream *ostream = cur->data;
1890 ret = ostream->last_flow;
1891 /* some other return value (must be SUCCESS but we can return
1892 * other values as well) */
1893 if (ret != GST_FLOW_NOT_LINKED)
1896 /* if we get here, all other pads were unlinked and we return
1897 * NOT_LINKED then */
1903 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1904 GstRMDemuxStream * stream)
1906 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1909 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1910 stream->subpackets->len);
1911 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1912 g_ptr_array_set_size (stream->subpackets, 0);
1915 static GstFlowReturn
1916 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1918 GstFlowReturn ret = GST_FLOW_ERROR;
1920 guint packet_size = stream->packet_size;
1921 guint height = stream->subpackets->len;
1922 guint leaf_size = stream->leaf_size;
1925 g_assert (stream->height == height);
1927 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1930 outbuf = gst_buffer_new_and_alloc (height * packet_size);
1931 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
1933 for (p = 0; p < height; ++p) {
1934 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1935 guint8 *b_data = GST_BUFFER_DATA (b);
1938 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1940 for (x = 0; x < packet_size / leaf_size; ++x) {
1943 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1944 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1945 memcpy (GST_BUFFER_DATA (outbuf) + leaf_size * idx, b_data, leaf_size);
1946 b_data += leaf_size;
1950 /* some decoders, such as realaudiodec, need to be fed in packet units */
1951 for (p = 0; p < height; ++p) {
1954 subbuf = gst_buffer_create_sub (outbuf, p * packet_size, packet_size);
1956 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1957 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1959 if (stream->discont) {
1960 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1961 stream->discont = FALSE;
1964 gst_buffer_set_caps (subbuf, GST_PAD_CAPS (stream->pad));
1965 ret = gst_pad_push (stream->pad, subbuf);
1966 if (ret != GST_FLOW_OK)
1970 gst_buffer_unref (outbuf);
1972 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1977 static GstFlowReturn
1978 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1979 GstRMDemuxStream * stream)
1983 buf = g_ptr_array_index (stream->subpackets, 0);
1984 g_ptr_array_index (stream->subpackets, 0) = NULL;
1985 g_ptr_array_set_size (stream->subpackets, 0);
1987 buf = gst_rm_utils_descramble_dnet_buffer (buf);
1989 if (stream->discont) {
1990 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
1991 stream->discont = FALSE;
1993 return gst_pad_push (stream->pad, buf);
1996 static GstFlowReturn
1997 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
1998 GstRMDemuxStream * stream)
2001 GstBuffer *buf, *outbuf;
2002 guint frames, index, i;
2004 GstClockTime timestamp;
2008 buf = g_ptr_array_index (stream->subpackets, 0);
2009 g_ptr_array_index (stream->subpackets, 0) = NULL;
2010 g_ptr_array_set_size (stream->subpackets, 0);
2012 data = GST_BUFFER_DATA (buf);
2013 timestamp = GST_BUFFER_TIMESTAMP (buf);
2015 frames = (data[1] & 0xf0) >> 4;
2016 index = 2 * frames + 2;
2018 for (i = 0; i < frames; i++) {
2019 guint len = (data[i * 2 + 2] << 8) | data[i * 2 + 3];
2021 outbuf = gst_buffer_create_sub (buf, index, len);
2023 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2024 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2028 if (stream->discont) {
2029 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2030 stream->discont = FALSE;
2032 res = gst_pad_push (stream->pad, outbuf);
2033 if (res != GST_FLOW_OK)
2036 gst_buffer_unref (buf);
2040 static GstFlowReturn
2041 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2042 GstRMDemuxStream * stream)
2046 guint packet_size = stream->packet_size;
2047 guint height = stream->subpackets->len;
2050 g_assert (stream->height == height);
2052 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2053 stream->leaf_size, height);
2055 outbuf = gst_buffer_new_and_alloc (height * packet_size);
2056 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2058 for (p = 0; p < height; ++p) {
2059 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2060 guint8 *b_data = GST_BUFFER_DATA (b);
2063 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
2065 memcpy (GST_BUFFER_DATA (outbuf) + packet_size * p, b_data, packet_size);
2068 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
2069 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
2071 if (stream->discont) {
2072 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2073 stream->discont = FALSE;
2076 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2078 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2079 ret = gst_pad_push (stream->pad, outbuf);
2081 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2086 static GstFlowReturn
2087 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2088 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2092 if (stream->subpackets == NULL)
2093 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2095 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
2096 stream->subpackets_needed, GST_BUFFER_SIZE (buf), keyframe);
2098 if (keyframe && stream->subpackets->len > 0) {
2099 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2102 g_ptr_array_add (stream->subpackets, buf);
2104 if (stream->subpackets->len < stream->subpackets_needed)
2107 g_assert (stream->subpackets->len >= 1);
2109 switch (stream->fourcc) {
2110 case GST_RM_AUD_DNET:
2111 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2113 case GST_RM_AUD_COOK:
2114 case GST_RM_AUD_ATRC:
2115 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2117 case GST_RM_AUD_RAAC:
2118 case GST_RM_AUD_RACP:
2119 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2121 case GST_RM_AUD_SIPR:
2122 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2125 g_assert_not_reached ();
2132 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2133 guint8 * data, GstClockTime timestamp)
2137 GstClockTime ts = timestamp;
2139 if (timestamp == GST_CLOCK_TIME_NONE)
2142 /* only adjust when we have a stream with B frames */
2143 if (stream->format < 0x20200002)
2146 /* Fix timestamp. */
2147 switch (stream->fourcc) {
2148 case GST_RM_VDO_RV10:
2150 case GST_RM_VDO_RV20:
2153 * Bit 1- 2: frame type
2155 * Bit 10-22: sequence number
2158 frame_type = (data[0] >> 6) & 0x03;
2159 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2162 case GST_RM_VDO_RV30:
2166 * Bit 3: skip packet if 1
2167 * Bit 4- 5: frame type
2169 * Bit 13-25: sequence number
2172 frame_type = (data[0] >> 3) & 0x03;
2173 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2176 case GST_RM_VDO_RV40:
2179 * Bit 1: skip packet if 1
2180 * Bit 2- 3: frame type
2182 * Bit 14-26: sequence number
2185 frame_type = (data[0] >> 5) & 0x03;
2186 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2190 goto unknown_version;
2193 switch (frame_type) {
2197 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2199 if (stream->next_ts == -1)
2200 stream->next_ts = timestamp;
2202 timestamp = stream->next_ts;
2203 stream->last_ts = stream->next_ts;
2204 stream->next_ts = ts;
2205 stream->last_seq = stream->next_seq;
2206 stream->next_seq = seq;
2211 GST_LOG_OBJECT (rmdemux, "P frame");
2213 timestamp = stream->last_ts = stream->next_ts;
2214 if (seq < stream->next_seq)
2215 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2217 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2218 stream->last_seq = stream->next_seq;
2219 stream->next_seq = seq;
2224 GST_LOG_OBJECT (rmdemux, "B frame");
2226 if (seq < stream->last_seq) {
2228 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2230 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2235 goto unknown_frame_type;
2239 GST_LOG_OBJECT (rmdemux,
2240 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2241 GST_TIME_ARGS (timestamp));
2248 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2249 ("Unknown version: %i.", stream->version), (NULL));
2250 return GST_FLOW_ERROR;
2255 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2256 frame_type), (NULL));
2257 return GST_FLOW_ERROR;
2261 #define PARSE_NUMBER(data, size, number, label) \
2265 number = GST_READ_UINT16_BE (data); \
2266 if (!(number & 0xc000)) { \
2269 number = GST_READ_UINT32_BE (data); \
2279 static GstFlowReturn
2280 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2281 GstBuffer * in, guint offset, guint16 version,
2282 GstClockTime timestamp, gboolean key)
2285 const guint8 *data, *base;
2288 base = GST_BUFFER_DATA (in);
2289 data = base + offset;
2290 size = GST_BUFFER_SIZE (in) - offset;
2291 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2292 * was previously for that given stream. */
2293 ret = stream->last_flow;
2299 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2300 guint fragment_size;
2301 GstBuffer *fragment;
2303 pkg_header = *data++;
2307 * bit 7: 1=last block in block chain
2308 * bit 6: 1=short header (only one block?)
2310 if ((pkg_header & 0xc0) == 0x40) {
2311 /* skip unknown byte */
2317 if ((pkg_header & 0x40) == 0) {
2318 pkg_subseq = (*data++) & 0x7f;
2325 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2328 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2332 goto not_enough_data;
2334 pkg_seqnum = *data++;
2338 GST_DEBUG_OBJECT (rmdemux,
2339 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2340 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2342 /* calc size of fragment */
2343 if ((pkg_header & 0xc0) == 0x80) {
2344 fragment_size = pkg_offset;
2346 if ((pkg_header & 0xc0) == 0)
2347 fragment_size = size;
2349 fragment_size = pkg_length;
2351 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2353 /* get the fragment */
2354 fragment = gst_buffer_create_sub (in, data - base, fragment_size);
2356 if (pkg_subseq == 1) {
2357 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2358 gst_adapter_clear (stream->adapter);
2359 stream->frag_current = 0;
2360 stream->frag_count = 0;
2361 stream->frag_length = pkg_length;
2362 } else if (pkg_subseq == 0) {
2363 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2364 stream->frag_current = 0;
2365 stream->frag_count = 0;
2366 stream->frag_length = fragment_size;
2369 /* put fragment in adapter */
2370 gst_adapter_push (stream->adapter, fragment);
2371 stream->frag_offset[stream->frag_count] = stream->frag_current;
2372 stream->frag_current += fragment_size;
2373 stream->frag_count++;
2375 if (stream->frag_count > MAX_FRAGS)
2376 goto too_many_fragments;
2378 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2379 stream->frag_current, stream->frag_length);
2381 /* flush fragment when complete */
2382 if (stream->frag_current >= stream->frag_length) {
2388 /* calculate header size, which is:
2389 * 1 byte for the number of fragments - 1
2390 * for each fragment:
2391 * 4 bytes 0x00000001 little endian
2392 * 4 bytes fragment offset
2394 * This is also the matroska header for realvideo, the decoder needs the
2395 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2396 * in front of the data.
2398 header_size = 1 + (8 * (stream->frag_count));
2400 GST_DEBUG_OBJECT (rmdemux,
2401 "fragmented completed. count %d, header_size %u", stream->frag_count,
2404 avail = gst_adapter_available (stream->adapter);
2406 out = gst_buffer_new_and_alloc (header_size + avail);
2407 outdata = GST_BUFFER_DATA (out);
2410 *outdata++ = stream->frag_count - 1;
2411 for (i = 0; i < stream->frag_count; i++) {
2412 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2414 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2418 /* copy packet data after the header now */
2419 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2420 gst_adapter_flush (stream->adapter, avail);
2422 stream->frag_current = 0;
2423 stream->frag_count = 0;
2424 stream->frag_length = 0;
2426 gst_buffer_set_caps (out, GST_PAD_CAPS (stream->pad));
2428 if (timestamp != -1) {
2429 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2430 timestamp -= rmdemux->first_ts;
2434 if (rmdemux->base_ts != -1)
2435 timestamp += rmdemux->base_ts;
2438 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2440 GST_BUFFER_TIMESTAMP (out) = timestamp;
2442 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2443 GST_TIME_ARGS (timestamp));
2445 if (stream->discont) {
2446 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2447 stream->discont = FALSE;
2451 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DELTA_UNIT);
2454 ret = gst_pad_push (stream->pad, out);
2455 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2456 if (ret != GST_FLOW_OK)
2459 timestamp = GST_CLOCK_TIME_NONE;
2461 data += fragment_size;
2462 size -= fragment_size;
2464 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2466 gst_buffer_unref (in);
2473 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2475 gst_buffer_unref (in);
2480 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2481 ("Got more fragments (%u) than can be handled (%u)",
2482 stream->frag_count, MAX_FRAGS), (NULL));
2483 gst_buffer_unref (in);
2484 return GST_FLOW_ERROR;
2488 static GstFlowReturn
2489 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2490 GstBuffer * in, guint offset, guint16 version,
2491 GstClockTime timestamp, gboolean key)
2498 data = GST_BUFFER_DATA (in) + offset;
2499 size = GST_BUFFER_SIZE (in) - offset;
2501 buffer = gst_buffer_new_and_alloc (size);
2502 gst_buffer_set_caps (buffer, GST_PAD_CAPS (stream->pad));
2504 memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, size);
2506 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2507 timestamp -= rmdemux->first_ts;
2511 if (rmdemux->base_ts != -1)
2512 timestamp += rmdemux->base_ts;
2514 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2516 if (stream->needs_descrambling) {
2517 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2518 GST_TIME_ARGS (timestamp));
2519 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2521 GST_LOG_OBJECT (rmdemux,
2522 "Pushing buffer of size %d, timestamp %" GST_TIME_FORMAT "to pad %s",
2523 GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (timestamp),
2524 GST_PAD_NAME (stream->pad));
2526 if (stream->discont) {
2527 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2528 stream->discont = FALSE;
2530 ret = gst_pad_push (stream->pad, buffer);
2533 gst_buffer_unref (in);
2538 static GstFlowReturn
2539 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2542 GstRMDemuxStream *stream;
2544 GstFlowReturn cret, ret;
2545 GstClockTime timestamp;
2547 guint8 *data, *base;
2551 base = data = GST_BUFFER_DATA (in);
2552 size = GST_BUFFER_SIZE (in);
2555 id = RMDEMUX_GUINT16_GET (data);
2557 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2558 if (!stream || !stream->pad)
2559 goto unknown_stream;
2561 /* timestamp in Msec */
2562 ts = RMDEMUX_GUINT32_GET (data + 2);
2563 timestamp = ts * GST_MSECOND;
2565 gst_segment_set_last_stop (&rmdemux->segment, GST_FORMAT_TIME, timestamp);
2567 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2568 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2569 GST_TIME_ARGS (timestamp), size, version, ts);
2571 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2572 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2573 GST_TIME_ARGS (timestamp));
2574 rmdemux->first_ts = timestamp;
2577 /* skip stream_id and timestamp */
2582 flags = GST_READ_UINT8 (data + 1);
2587 /* version 1 has an extra byte */
2592 key = (flags & 0x02) != 0;
2593 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2595 if (rmdemux->need_newsegment) {
2598 event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
2599 rmdemux->segment.format, rmdemux->segment.start,
2600 rmdemux->segment.stop, rmdemux->segment.time);
2602 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2603 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2605 gst_rmdemux_send_event (rmdemux, event);
2606 rmdemux->need_newsegment = FALSE;
2609 if (stream->pending_tags != NULL) {
2610 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2611 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (rmdemux), stream->pad,
2612 stream->pending_tags);
2613 stream->pending_tags = NULL;
2616 if ((rmdemux->offset + size) <= stream->seek_offset) {
2617 GST_DEBUG_OBJECT (rmdemux,
2618 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2619 stream->id, stream->seek_offset, rmdemux->offset, size);
2624 /* do special headers */
2625 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2627 gst_rmdemux_parse_video_packet (rmdemux, stream, in, data - base,
2628 version, timestamp, key);
2629 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2631 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, data - base,
2632 version, timestamp, key);
2636 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2644 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2651 gst_rmdemux_plugin_init (GstPlugin * plugin)
2653 return gst_element_register (plugin, "rmdemux",
2654 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);