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 */
81 gboolean needs_descrambling;
82 guint subpackets_needed; /* subpackets needed for descrambling */
83 GPtrArray *subpackets; /* array containing subpacket GstBuffers */
85 /* Variables needed for fixing timestamps. */
86 GstClockTime next_ts, last_ts;
87 guint16 next_seq, last_seq;
94 guint frag_offset[MAX_FRAGS];
97 GstTagList *pending_tags;
100 struct _GstRMDemuxIndex
103 GstClockTime timestamp;
106 static GstStaticPadTemplate gst_rmdemux_sink_template =
107 GST_STATIC_PAD_TEMPLATE ("sink",
110 GST_STATIC_CAPS ("application/vnd.rn-realmedia")
113 static GstStaticPadTemplate gst_rmdemux_videosrc_template =
114 GST_STATIC_PAD_TEMPLATE ("video_%02d",
117 GST_STATIC_CAPS_ANY);
119 static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
120 GST_STATIC_PAD_TEMPLATE ("audio_%02d",
123 GST_STATIC_CAPS_ANY);
125 GST_DEBUG_CATEGORY_STATIC (rmdemux_debug);
126 #define GST_CAT_DEFAULT rmdemux_debug
128 static GstElementClass *parent_class = NULL;
130 static void gst_rmdemux_class_init (GstRMDemuxClass * klass);
131 static void gst_rmdemux_base_init (GstRMDemuxClass * klass);
132 static void gst_rmdemux_init (GstRMDemux * rmdemux);
133 static void gst_rmdemux_finalize (GObject * object);
134 static GstStateChangeReturn gst_rmdemux_change_state (GstElement * element,
135 GstStateChange transition);
136 static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer);
137 static void gst_rmdemux_loop (GstPad * pad);
138 static gboolean gst_rmdemux_sink_activate (GstPad * sinkpad);
139 static gboolean gst_rmdemux_sink_activate_push (GstPad * sinkpad,
141 static gboolean gst_rmdemux_sink_activate_pull (GstPad * sinkpad,
143 static gboolean gst_rmdemux_sink_event (GstPad * pad, GstEvent * event);
144 static gboolean gst_rmdemux_src_event (GstPad * pad, GstEvent * event);
145 static void gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event);
146 static const GstQueryType *gst_rmdemux_src_query_types (GstPad * pad);
147 static gboolean gst_rmdemux_src_query (GstPad * pad, GstQuery * query);
148 static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux,
151 static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data,
153 static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data,
155 static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux,
156 const guint8 * data, int length);
157 static guint gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data,
159 static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data,
161 static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data,
163 static GstFlowReturn gst_rmdemux_parse_packet (GstRMDemux * rmdemux,
164 GstBuffer * in, guint16 version);
165 static void gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux,
166 const guint8 * data, int length);
167 static void gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
168 GstRMDemuxStream * stream);
169 static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
173 gst_rmdemux_get_type (void)
175 static GType rmdemux_type = 0;
178 static const GTypeInfo rmdemux_info = {
179 sizeof (GstRMDemuxClass),
180 (GBaseInitFunc) gst_rmdemux_base_init, NULL,
181 (GClassInitFunc) gst_rmdemux_class_init,
182 NULL, NULL, sizeof (GstRMDemux), 0,
183 (GInstanceInitFunc) gst_rmdemux_init,
187 g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
194 gst_rmdemux_base_init (GstRMDemuxClass * klass)
196 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
198 gst_element_class_add_pad_template (element_class,
199 gst_static_pad_template_get (&gst_rmdemux_sink_template));
200 gst_element_class_add_pad_template (element_class,
201 gst_static_pad_template_get (&gst_rmdemux_videosrc_template));
202 gst_element_class_add_pad_template (element_class,
203 gst_static_pad_template_get (&gst_rmdemux_audiosrc_template));
204 gst_element_class_set_details_simple (element_class, "RealMedia Demuxer",
206 "Demultiplex a RealMedia file into audio and video streams",
207 "David Schleef <ds@schleef.org>");
211 gst_rmdemux_class_init (GstRMDemuxClass * klass)
213 GObjectClass *gobject_class;
214 GstElementClass *gstelement_class;
216 gobject_class = (GObjectClass *) klass;
217 gstelement_class = (GstElementClass *) klass;
219 parent_class = g_type_class_peek_parent (klass);
221 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rmdemux_change_state);
223 GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
224 0, "Demuxer for Realmedia streams");
226 gobject_class->finalize = gst_rmdemux_finalize;
230 gst_rmdemux_finalize (GObject * object)
232 GstRMDemux *rmdemux = GST_RMDEMUX (object);
234 if (rmdemux->adapter) {
235 g_object_unref (rmdemux->adapter);
236 rmdemux->adapter = NULL;
239 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
243 gst_rmdemux_init (GstRMDemux * rmdemux)
246 gst_pad_new_from_static_template (&gst_rmdemux_sink_template, "sink");
247 gst_pad_set_event_function (rmdemux->sinkpad,
248 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_event));
249 gst_pad_set_chain_function (rmdemux->sinkpad,
250 GST_DEBUG_FUNCPTR (gst_rmdemux_chain));
251 gst_pad_set_activate_function (rmdemux->sinkpad,
252 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate));
253 gst_pad_set_activatepull_function (rmdemux->sinkpad,
254 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_pull));
255 gst_pad_set_activatepush_function (rmdemux->sinkpad,
256 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_push));
258 gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
260 rmdemux->adapter = gst_adapter_new ();
261 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
262 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
263 rmdemux->need_newsegment = TRUE;
267 gst_rmdemux_sink_event (GstPad * pad, GstEvent * event)
272 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
274 GST_LOG_OBJECT (pad, "%s event", GST_EVENT_TYPE_NAME (event));
276 switch (GST_EVENT_TYPE (event)) {
277 case GST_EVENT_NEWSEGMENT:
278 gst_event_unref (event);
282 ret = gst_pad_event_default (pad, event);
286 gst_object_unref (rmdemux);
291 gst_rmdemux_src_event (GstPad * pad, GstEvent * event)
295 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
297 GST_LOG_OBJECT (rmdemux, "handling src event");
299 switch (GST_EVENT_TYPE (event)) {
304 GST_LOG_OBJECT (rmdemux, "Event on src: SEEK");
305 /* can't seek if we are not seekable, FIXME could pass the
306 * seek query upstream after converting it to bytes using
307 * the average bitrate of the stream. */
308 if (!rmdemux->seekable) {
310 GST_DEBUG ("seek on non seekable stream");
314 GST_OBJECT_LOCK (rmdemux);
315 /* check if we can do the seek now */
316 running = rmdemux->running;
317 GST_OBJECT_UNLOCK (rmdemux);
319 /* now do the seek */
321 ret = gst_rmdemux_perform_seek (rmdemux, event);
325 gst_event_unref (event);
329 GST_LOG_OBJECT (rmdemux, "Event on src: type=%d", GST_EVENT_TYPE (event));
330 ret = gst_pad_event_default (pad, event);
337 GST_DEBUG ("error handling event");
338 gst_event_unref (event);
342 /* Validate that this looks like a reasonable point to seek to */
344 gst_rmdemux_validate_offset (GstRMDemux * rmdemux)
347 GstFlowReturn flowret;
348 guint16 version, length;
351 flowret = gst_pad_pull_range (rmdemux->sinkpad, rmdemux->offset, 4, &buffer);
353 if (flowret != GST_FLOW_OK) {
354 GST_DEBUG_OBJECT (rmdemux, "Failed to pull data at offset %d",
358 /* TODO: Can we also be seeking to a 'DATA' chunk header? Check this.
359 * Also, for the case we currently handle, can we check any more? It's pretty
360 * sucky to not be validating a little more heavily than this... */
361 /* This should now be the start of a data packet header. That begins with
362 * a 2-byte 'version' field, which has to be 0 or 1, then a length. I'm not
363 * certain what values are valid for length, but it must always be at least
364 * 4 bytes, and we can check that it won't take us past our known total size
367 version = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer));
368 if (version != 0 && version != 1) {
369 GST_DEBUG_OBJECT (rmdemux, "Expected version 0 or 1, got %d",
374 length = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer) + 2);
375 /* TODO: Also check against total stream length */
377 GST_DEBUG_OBJECT (rmdemux, "Expected length >= 4, got %d", (int) length);
382 rmdemux->offset += 4;
383 gst_adapter_clear (rmdemux->adapter);
384 gst_adapter_push (rmdemux->adapter, buffer);
386 GST_WARNING_OBJECT (rmdemux, "Failed to validate seek offset at %d",
394 find_seek_offset_bytes (GstRMDemux * rmdemux, guint target)
398 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 (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
919 if (ret == GST_FLOW_UNEXPECTED) {
920 /* perform EOS logic */
921 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
924 /* for segment playback we need to post when (in stream time)
925 * we stopped, this is either stop (when set) or the duration. */
926 if ((stop = rmdemux->segment.stop) == -1)
927 stop = rmdemux->segment.duration;
929 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
930 gst_element_post_message (GST_ELEMENT (rmdemux),
931 gst_message_new_segment_done (GST_OBJECT (rmdemux),
932 GST_FORMAT_TIME, stop));
934 /* normal playback, send EOS to all linked pads */
935 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
936 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
939 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
940 (NULL), ("stream stopped, reason %s", reason));
941 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
949 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
953 for (i = 0; i < 4; i++) {
954 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
962 gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer)
964 GstFlowReturn ret = GST_FLOW_OK;
969 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
971 if (rmdemux->base_ts == -1) {
972 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
973 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
974 GST_TIME_ARGS (rmdemux->base_ts));
977 gst_adapter_push (rmdemux->adapter, buffer);
979 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %d",
980 GST_BUFFER_SIZE (buffer));
983 avail = gst_adapter_available (rmdemux->adapter);
985 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
986 switch (rmdemux->state) {
987 case RMDEMUX_STATE_HEADER:
989 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
992 data = gst_adapter_peek (rmdemux->adapter, HEADER_SIZE);
994 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
995 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
996 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
998 /* Sanity-check. We assume that the FOURCC is printable ASCII */
999 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
1000 /* Failed. Remain in HEADER state, try again... We flush only
1001 * the actual FOURCC, not the entire header, because we could
1002 * need to resync anywhere at all... really, this should never
1004 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
1006 gst_adapter_flush (rmdemux->adapter, 4);
1011 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1013 " size=%08x object_version=%d",
1014 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1015 rmdemux->object_version);
1017 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1019 switch (rmdemux->object_id) {
1020 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1021 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1023 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1024 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1026 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1027 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1029 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1030 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1032 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1033 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1035 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1036 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1039 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1044 case RMDEMUX_STATE_HEADER_UNKNOWN:
1046 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1049 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1050 GST_FOURCC_ARGS (rmdemux->object_id));
1052 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1053 rmdemux->state = RMDEMUX_STATE_HEADER;
1056 case RMDEMUX_STATE_HEADER_RMF:
1058 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1061 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1062 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1064 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1067 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1068 rmdemux->state = RMDEMUX_STATE_HEADER;
1071 case RMDEMUX_STATE_HEADER_PROP:
1073 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1075 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1077 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1079 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1080 rmdemux->state = RMDEMUX_STATE_HEADER;
1083 case RMDEMUX_STATE_HEADER_MDPR:
1085 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1087 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1089 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1091 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1092 rmdemux->state = RMDEMUX_STATE_HEADER;
1095 case RMDEMUX_STATE_HEADER_CONT:
1097 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1099 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1101 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1103 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1104 rmdemux->state = RMDEMUX_STATE_HEADER;
1107 case RMDEMUX_STATE_HEADER_DATA:
1109 /* If we haven't already done so then signal there are no more pads */
1110 if (!rmdemux->have_pads) {
1111 GST_LOG_OBJECT (rmdemux, "no more pads");
1112 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1113 rmdemux->have_pads = TRUE;
1116 /* The actual header is only 8 bytes */
1117 rmdemux->size = DATA_SIZE;
1118 GST_LOG_OBJECT (rmdemux, "data available %d",
1119 gst_adapter_available (rmdemux->adapter));
1120 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1123 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1125 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1127 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1129 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1132 case RMDEMUX_STATE_HEADER_INDX:
1134 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1136 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1138 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1140 /* Only flush the header */
1141 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1143 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1146 case RMDEMUX_STATE_INDX_DATA:
1148 /* There's not always an data to get... */
1149 if (rmdemux->size > 0) {
1150 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1153 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1155 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1157 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1160 rmdemux->state = RMDEMUX_STATE_HEADER;
1163 case RMDEMUX_STATE_DATA_PACKET:
1165 if (gst_adapter_available (rmdemux->adapter) < 2)
1168 data = gst_adapter_peek (rmdemux->adapter, 2);
1169 version = RMDEMUX_GUINT16_GET (data);
1170 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1172 if (version == 0 || version == 1) {
1175 if (gst_adapter_available (rmdemux->adapter) < 4)
1177 data = gst_adapter_peek (rmdemux->adapter, 4);
1179 length = RMDEMUX_GUINT16_GET (data + 2);
1180 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1183 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1184 /* Invalid, just drop it */
1185 gst_adapter_flush (rmdemux->adapter, 4);
1189 avail = gst_adapter_available (rmdemux->adapter);
1193 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1196 /* flush version and length */
1197 gst_adapter_flush (rmdemux->adapter, 4);
1200 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1202 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1203 rmdemux->chunk_index++;
1206 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1207 rmdemux->state = RMDEMUX_STATE_HEADER;
1210 gst_adapter_flush (rmdemux->adapter, 2);
1212 if (rmdemux->data_offset == 0) {
1213 GST_LOG_OBJECT (rmdemux,
1214 "No further data, internal demux state EOS");
1215 rmdemux->state = RMDEMUX_STATE_EOS;
1217 rmdemux->state = RMDEMUX_STATE_HEADER;
1221 case RMDEMUX_STATE_EOS:
1222 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1225 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1234 static GstRMDemuxStream *
1235 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1239 for (cur = rmdemux->streams; cur; cur = cur->next) {
1240 GstRMDemuxStream *stream = cur->data;
1242 if (stream->id == id) {
1251 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1255 for (cur = rmdemux->streams; cur; cur = cur->next) {
1256 GstRMDemuxStream *stream = cur->data;
1258 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1259 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1261 switch (GST_EVENT_TYPE (event)) {
1262 case GST_EVENT_FLUSH_STOP:
1263 stream->last_ts = -1;
1264 stream->next_ts = -1;
1265 stream->last_seq = -1;
1266 stream->next_seq = -1;
1267 stream->last_flow = GST_FLOW_OK;
1272 gst_event_ref (event);
1273 gst_pad_push_event (stream->pad, event);
1275 gst_event_unref (event);
1279 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1281 GstCaps *stream_caps = NULL;
1282 const gchar *codec_tag = NULL;
1283 const gchar *codec_name = NULL;
1286 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1287 char *name = g_strdup_printf ("video_%02d", rmdemux->n_video_streams);
1290 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1293 codec_tag = GST_TAG_VIDEO_CODEC;
1295 switch (stream->fourcc) {
1296 case GST_RM_VDO_RV10:
1297 codec_name = "Real Video 1.0";
1300 case GST_RM_VDO_RV20:
1301 codec_name = "Real Video 2.0";
1304 case GST_RM_VDO_RV30:
1305 codec_name = "Real Video 3.0";
1308 case GST_RM_VDO_RV40:
1309 codec_name = "Real Video 4.0";
1313 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1314 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1315 GST_WARNING_OBJECT (rmdemux,
1316 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1317 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1322 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1324 "format", G_TYPE_INT,
1325 (int) stream->format,
1326 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1330 gst_caps_set_simple (stream_caps,
1331 "width", G_TYPE_INT, stream->width,
1332 "height", G_TYPE_INT, stream->height,
1333 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1334 stream->framerate_denominator, NULL);
1336 rmdemux->n_video_streams++;
1338 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1339 char *name = g_strdup_printf ("audio_%02d", rmdemux->n_audio_streams);
1342 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1343 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1346 codec_tag = GST_TAG_AUDIO_CODEC;
1348 switch (stream->fourcc) {
1349 /* Older RealAudio Codecs */
1350 case GST_RM_AUD_14_4:
1351 codec_name = "Real Audio 14.4kbps";
1355 case GST_RM_AUD_28_8:
1356 codec_name = "Real Audio 28.8kbps";
1360 /* DolbyNet (Dolby AC3, low bitrate) */
1361 case GST_RM_AUD_DNET:
1362 codec_name = "AC-3 audio";
1364 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1365 (int) stream->rate, NULL);
1366 stream->needs_descrambling = TRUE;
1367 stream->subpackets_needed = 1;
1368 stream->subpackets = NULL;
1372 case GST_RM_AUD_RAAC:
1373 case GST_RM_AUD_RACP:
1374 codec_name = "MPEG4 audio";
1376 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1377 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1378 if (stream->extra_data_size > 0) {
1379 /* strip off an unknown byte in the extra data */
1380 stream->extra_data_size--;
1381 stream->extra_data++;
1383 stream->needs_descrambling = TRUE;
1384 stream->subpackets_needed = 1;
1385 stream->subpackets = NULL;
1389 case GST_RM_AUD_ATRC:
1390 codec_name = "Sony ATRAC3";
1391 stream_caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
1392 stream->needs_descrambling = TRUE;
1393 stream->subpackets_needed = stream->height;
1394 stream->subpackets = NULL;
1397 /* RealAudio G2 audio */
1398 case GST_RM_AUD_COOK:
1399 codec_name = "Real Audio G2 (Cook)";
1401 stream->needs_descrambling = TRUE;
1402 stream->subpackets_needed = stream->height;
1403 stream->subpackets = NULL;
1406 /* RALF is lossless */
1407 case GST_RM_AUD_RALF:
1408 codec_name = "Real Audio Lossless (RALF)";
1409 GST_DEBUG_OBJECT (rmdemux, "RALF");
1410 stream_caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
1413 case GST_RM_AUD_SIPR:
1415 if (stream->flavor > 3) {
1416 GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
1422 codec_name = "Sipro/ACELP.NET Voice";
1423 GST_DEBUG_OBJECT (rmdemux, "SIPR");
1424 stream_caps = gst_caps_new_simple ("audio/x-sipro", NULL);
1425 stream->needs_descrambling = TRUE;
1426 stream->subpackets_needed = stream->height;
1427 stream->subpackets = NULL;
1428 stream->leaf_size = sipr_subpk_size[stream->flavor];
1433 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1434 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1435 GST_WARNING_OBJECT (rmdemux,
1436 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1437 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1443 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1444 (int) version, NULL);
1448 gst_caps_set_simple (stream_caps,
1449 "flavor", G_TYPE_INT, (int) stream->flavor,
1450 "rate", G_TYPE_INT, (int) stream->rate,
1451 "channels", G_TYPE_INT, (int) stream->n_channels,
1452 "width", G_TYPE_INT, (int) stream->sample_width,
1453 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1454 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1455 "height", G_TYPE_INT, (int) stream->height, NULL);
1457 rmdemux->n_audio_streams++;
1459 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1465 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1466 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1467 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1468 g_slist_length (rmdemux->streams));
1470 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1473 if (stream->pad && stream_caps) {
1475 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1476 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1478 /* add codec_data if there is any */
1479 if (stream->extra_data_size > 0) {
1482 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1483 memcpy (GST_BUFFER_DATA (buffer), stream->extra_data,
1484 stream->extra_data_size);
1486 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1489 gst_buffer_unref (buffer);
1492 gst_pad_use_fixed_caps (stream->pad);
1494 gst_pad_set_caps (stream->pad, stream_caps);
1495 gst_pad_set_event_function (stream->pad,
1496 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1497 gst_pad_set_query_type_function (stream->pad,
1498 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query_types));
1499 gst_pad_set_query_function (stream->pad,
1500 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1502 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1503 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1504 gst_pad_set_active (stream->pad, TRUE);
1505 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1507 /* save for later, we must send the tags after the newsegment event */
1508 if (codec_name != NULL && codec_tag != NULL) {
1509 if (stream->pending_tags == NULL)
1510 stream->pending_tags = gst_tag_list_new ();
1511 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1512 codec_tag, codec_name, NULL);
1519 gst_caps_unref (stream_caps);
1523 re_skip_pascal_string (const guint8 * ptr)
1533 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1535 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1536 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1540 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1542 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1543 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1544 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1545 RMDEMUX_GUINT32_GET (data + 8));
1546 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1547 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1548 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1549 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1551 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1552 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1554 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1555 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1556 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1557 rmdemux->index_offset);
1558 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1559 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1560 rmdemux->data_offset);
1561 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1562 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1566 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1568 GstRMDemuxStream *stream;
1569 char *stream1_type_string;
1570 char *stream2_type_string;
1574 guint32 max_bitrate;
1575 guint32 avg_bitrate;
1577 stream = g_new0 (GstRMDemuxStream, 1);
1579 stream->id = RMDEMUX_GUINT16_GET (data);
1580 stream->index = NULL;
1581 stream->seek_offset = 0;
1582 stream->last_ts = -1;
1583 stream->next_ts = -1;
1584 stream->last_flow = GST_FLOW_OK;
1585 stream->discont = TRUE;
1586 stream->adapter = gst_adapter_new ();
1587 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1589 /* parse the bitrates */
1590 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1591 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1592 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1593 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1594 if (max_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_MAXIMUM_BITRATE, max_bitrate, NULL);
1600 if (avg_bitrate != 0) {
1601 if (stream->pending_tags == NULL)
1602 stream->pending_tags = gst_tag_list_new ();
1603 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1604 GST_TAG_BITRATE, avg_bitrate, NULL);
1608 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1609 length - offset, &str_len);
1611 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1612 length - offset, &str_len);
1615 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1617 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1618 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1620 * so, we should not rely on it to know which stream type it is
1623 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1624 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1626 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1627 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1628 } else if (strcmp (stream2_type_string,
1629 "video/x-pn-multirate-realvideo") == 0) {
1630 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1631 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1632 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1633 } else if (strcmp (stream2_type_string,
1634 "audio/x-pn-multirate-realaudio") == 0) {
1635 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1636 } else if (strcmp (stream2_type_string,
1637 "audio/x-pn-multirate-realaudio-live") == 0) {
1638 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1639 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1640 /* Another audio type found in the real testsuite */
1641 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1642 } else if (strcmp (stream1_type_string, "") == 0 &&
1643 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1644 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1646 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1647 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1648 stream1_type_string, stream2_type_string);
1650 g_free (stream1_type_string);
1651 g_free (stream2_type_string);
1655 stream->subtype = stream_type;
1656 switch (stream_type) {
1658 case GST_RMDEMUX_STREAM_VIDEO:
1659 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1660 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1661 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1662 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1663 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1664 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1665 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1666 stream->extra_data_size = length - (offset + 26);
1667 stream->extra_data = (guint8 *) data + offset + 26;
1668 /* Natural way to represent framerates here requires unsigned 32 bit
1669 * numerator, which we don't have. For the nasty case, approximate...
1672 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1673 RMDEMUX_GUINT16_GET (data + offset + 24);
1674 if (numerator > G_MAXINT) {
1675 stream->framerate_numerator = (gint) (numerator >> 1);
1676 stream->framerate_denominator = 32768;
1678 stream->framerate_numerator = (gint) numerator;
1679 stream->framerate_denominator = 65536;
1683 GST_DEBUG_OBJECT (rmdemux,
1684 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1685 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1686 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1687 stream->rate, stream->framerate_numerator,
1688 stream->framerate_denominator, stream->subformat, stream->format,
1689 stream->extra_data_size);
1691 case GST_RMDEMUX_STREAM_AUDIO:{
1692 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1693 GST_INFO ("stream version = %u", stream->version);
1694 switch (stream->version) {
1696 stream->fourcc = GST_RM_AUD_14_4;
1697 stream->packet_size = 20;
1698 stream->rate = 8000;
1699 stream->n_channels = 1;
1700 stream->sample_width = 16;
1702 stream->leaf_size = 0;
1706 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1707 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1708 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1709 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1710 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1711 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1712 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1713 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1714 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1715 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1716 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1717 stream->extra_data_size);
1718 if (length - (offset + 73) >= stream->extra_data_size) {
1719 stream->extra_data = (guint8 *) data + offset + 73;
1721 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1722 stream->extra_data_size = 0;
1726 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1727 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1728 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1729 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1730 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1731 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1732 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1733 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1734 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1735 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1736 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1737 stream->extra_data_size);
1738 if (length - (offset + 78) >= stream->extra_data_size) {
1739 stream->extra_data = (guint8 *) data + offset + 78;
1741 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1742 stream->extra_data_size = 0;
1746 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1751 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1752 GST_DEBUG_OBJECT (rmdemux,
1753 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1754 stream->rate, stream->sample_width, stream->n_channels);
1758 case GST_RMDEMUX_STREAM_FILEINFO:
1762 /* Length of this section */
1763 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1764 RMDEMUX_GUINT32_GET (data + offset));
1767 /* Unknown : 00 00 00 00 */
1770 /* Number of variables that would follow (loop iterations) */
1771 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1774 while (element_nb) {
1775 /* Category Id : 00 00 00 XX 00 00 */
1779 offset += re_skip_pascal_string (data + offset);
1781 /* Variable Value Type */
1782 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1783 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1786 /* Variable Value */
1787 offset += re_skip_pascal_string (data + offset);
1793 case GST_RMDEMUX_STREAM_UNKNOWN:
1798 gst_rmdemux_add_stream (rmdemux, stream);
1802 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1807 n = RMDEMUX_GUINT32_GET (data);
1808 id = RMDEMUX_GUINT16_GET (data + 4);
1809 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1811 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1814 /* Point to the next index_stream */
1815 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1817 /* Return the length of the index */
1822 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1827 GstRMDemuxIndex *index;
1829 /* The number of index records */
1832 if (rmdemux->index_stream == NULL)
1835 /* don't parse the index a second time when operating pull-based and
1836 * reaching the end of the file */
1837 if (rmdemux->index_stream->index_length > 0) {
1838 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1842 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1843 rmdemux->index_stream->index = index;
1844 rmdemux->index_stream->index_length = n;
1846 for (i = 0; i < n; i++) {
1847 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1848 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1850 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1851 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1858 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1860 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1861 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1862 rmdemux->chunk_index = 0;
1863 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1864 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1868 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1872 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1874 gst_element_found_tags (GST_ELEMENT (rmdemux), tags);
1878 static GstFlowReturn
1879 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1884 /* store the value */
1885 stream->last_flow = ret;
1887 /* if it's success we can return the value right away */
1888 if (GST_FLOW_IS_SUCCESS (ret))
1891 /* any other error that is not-linked can be returned right
1893 if (ret != GST_FLOW_NOT_LINKED)
1896 for (cur = rmdemux->streams; cur; cur = cur->next) {
1897 GstRMDemuxStream *ostream = cur->data;
1899 ret = ostream->last_flow;
1900 /* some other return value (must be SUCCESS but we can return
1901 * other values as well) */
1902 if (ret != GST_FLOW_NOT_LINKED)
1905 /* if we get here, all other pads were unlinked and we return
1906 * NOT_LINKED then */
1912 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1913 GstRMDemuxStream * stream)
1915 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1918 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1919 stream->subpackets->len);
1920 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1921 g_ptr_array_set_size (stream->subpackets, 0);
1924 static GstFlowReturn
1925 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1929 guint packet_size = stream->packet_size;
1930 guint height = stream->subpackets->len;
1931 guint leaf_size = stream->leaf_size;
1934 g_assert (stream->height == height);
1936 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1939 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
1940 GST_BUFFER_OFFSET_NONE, height * packet_size,
1941 GST_PAD_CAPS (stream->pad), &outbuf);
1943 if (ret != GST_FLOW_OK)
1946 for (p = 0; p < height; ++p) {
1947 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1948 guint8 *b_data = GST_BUFFER_DATA (b);
1951 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1953 for (x = 0; x < packet_size / leaf_size; ++x) {
1956 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1957 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1958 memcpy (GST_BUFFER_DATA (outbuf) + leaf_size * idx, b_data, leaf_size);
1959 b_data += leaf_size;
1963 /* some decoders, such as realaudiodec, need to be fed in packet units */
1964 for (p = 0; p < height; ++p) {
1967 subbuf = gst_buffer_create_sub (outbuf, p * packet_size, packet_size);
1969 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1970 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1972 if (stream->discont) {
1973 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1974 stream->discont = FALSE;
1977 gst_buffer_set_caps (subbuf, GST_PAD_CAPS (stream->pad));
1978 ret = gst_pad_push (stream->pad, subbuf);
1979 if (ret != GST_FLOW_OK)
1983 gst_buffer_unref (outbuf);
1987 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1992 static GstFlowReturn
1993 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1994 GstRMDemuxStream * stream)
1998 buf = g_ptr_array_index (stream->subpackets, 0);
1999 g_ptr_array_index (stream->subpackets, 0) = NULL;
2000 g_ptr_array_set_size (stream->subpackets, 0);
2002 buf = gst_rm_utils_descramble_dnet_buffer (buf);
2004 if (stream->discont) {
2005 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2006 stream->discont = FALSE;
2008 return gst_pad_push (stream->pad, buf);
2011 static GstFlowReturn
2012 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
2013 GstRMDemuxStream * stream)
2016 GstBuffer *buf, *outbuf;
2017 guint frames, index, i;
2019 GstClockTime timestamp;
2023 buf = g_ptr_array_index (stream->subpackets, 0);
2024 g_ptr_array_index (stream->subpackets, 0) = NULL;
2025 g_ptr_array_set_size (stream->subpackets, 0);
2027 data = GST_BUFFER_DATA (buf);
2028 timestamp = GST_BUFFER_TIMESTAMP (buf);
2030 frames = (data[1] & 0xf0) >> 4;
2031 index = 2 * frames + 2;
2033 for (i = 0; i < frames; i++) {
2034 guint len = (data[i * 2 + 2] << 8) | data[i * 2 + 3];
2036 outbuf = gst_buffer_create_sub (buf, index, len);
2038 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2039 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2043 if (stream->discont) {
2044 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2045 stream->discont = FALSE;
2047 res = gst_pad_push (stream->pad, outbuf);
2048 if (res != GST_FLOW_OK)
2051 gst_buffer_unref (buf);
2055 static GstFlowReturn
2056 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2057 GstRMDemuxStream * stream)
2061 guint packet_size = stream->packet_size;
2062 guint height = stream->subpackets->len;
2063 guint leaf_size = stream->leaf_size;
2066 g_assert (stream->height == height);
2068 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2071 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
2072 GST_BUFFER_OFFSET_NONE, height * packet_size,
2073 GST_PAD_CAPS (stream->pad), &outbuf);
2075 if (ret != GST_FLOW_OK)
2078 for (p = 0; p < height; ++p) {
2079 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2080 guint8 *b_data = GST_BUFFER_DATA (b);
2083 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
2085 memcpy (GST_BUFFER_DATA (outbuf) + packet_size * p, b_data, packet_size);
2088 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
2089 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
2091 if (stream->discont) {
2092 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2093 stream->discont = FALSE;
2096 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2098 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2099 ret = gst_pad_push (stream->pad, outbuf);
2103 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2108 static GstFlowReturn
2109 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2110 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2114 if (stream->subpackets == NULL)
2115 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2117 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
2118 stream->subpackets_needed, GST_BUFFER_SIZE (buf), keyframe);
2120 if (keyframe && stream->subpackets->len > 0) {
2121 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2124 g_ptr_array_add (stream->subpackets, buf);
2126 if (stream->subpackets->len < stream->subpackets_needed)
2129 g_assert (stream->subpackets->len >= 1);
2131 switch (stream->fourcc) {
2132 case GST_RM_AUD_DNET:
2133 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2135 case GST_RM_AUD_COOK:
2136 case GST_RM_AUD_ATRC:
2137 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2139 case GST_RM_AUD_RAAC:
2140 case GST_RM_AUD_RACP:
2141 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2143 case GST_RM_AUD_SIPR:
2144 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2147 g_assert_not_reached ();
2154 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2155 guint8 * data, GstClockTime timestamp)
2159 GstClockTime ts = timestamp;
2161 if (timestamp == GST_CLOCK_TIME_NONE)
2164 /* only adjust when we have a stream with B frames */
2165 if (stream->format < 0x20200002)
2168 /* Fix timestamp. */
2169 switch (stream->fourcc) {
2170 case GST_RM_VDO_RV10:
2172 case GST_RM_VDO_RV20:
2175 * Bit 1- 2: frame type
2177 * Bit 10-22: sequence number
2180 frame_type = (data[0] >> 6) & 0x03;
2181 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2184 case GST_RM_VDO_RV30:
2188 * Bit 3: skip packet if 1
2189 * Bit 4- 5: frame type
2191 * Bit 13-25: sequence number
2194 frame_type = (data[0] >> 3) & 0x03;
2195 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2198 case GST_RM_VDO_RV40:
2201 * Bit 1: skip packet if 1
2202 * Bit 2- 3: frame type
2204 * Bit 14-26: sequence number
2207 frame_type = (data[0] >> 5) & 0x03;
2208 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2212 goto unknown_version;
2215 switch (frame_type) {
2219 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2221 if (stream->next_ts == -1)
2222 stream->next_ts = timestamp;
2224 timestamp = stream->next_ts;
2225 stream->last_ts = stream->next_ts;
2226 stream->next_ts = ts;
2227 stream->last_seq = stream->next_seq;
2228 stream->next_seq = seq;
2233 GST_LOG_OBJECT (rmdemux, "P frame");
2235 timestamp = stream->last_ts = stream->next_ts;
2236 if (seq < stream->next_seq)
2237 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2239 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2240 stream->last_seq = stream->next_seq;
2241 stream->next_seq = seq;
2246 GST_LOG_OBJECT (rmdemux, "B frame");
2248 if (seq < stream->last_seq) {
2250 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2252 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2257 goto unknown_frame_type;
2261 GST_LOG_OBJECT (rmdemux,
2262 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2263 GST_TIME_ARGS (timestamp));
2270 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2271 ("Unknown version: %i.", stream->version), (NULL));
2272 return GST_FLOW_ERROR;
2277 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2278 frame_type), (NULL));
2279 return GST_FLOW_ERROR;
2283 #define PARSE_NUMBER(data, size, number, label) \
2287 number = GST_READ_UINT16_BE (data); \
2288 if (!(number & 0xc000)) { \
2291 number = GST_READ_UINT32_BE (data); \
2301 static GstFlowReturn
2302 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2303 GstBuffer * in, guint offset, guint16 version,
2304 GstClockTime timestamp, gboolean key)
2307 const guint8 *data, *base;
2310 base = GST_BUFFER_DATA (in);
2311 data = base + offset;
2312 size = GST_BUFFER_SIZE (in) - offset;
2313 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2314 * was previously for that given stream. */
2315 ret = stream->last_flow;
2321 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2322 guint fragment_size;
2323 GstBuffer *fragment;
2325 pkg_header = *data++;
2329 * bit 7: 1=last block in block chain
2330 * bit 6: 1=short header (only one block?)
2332 if ((pkg_header & 0xc0) == 0x40) {
2333 /* skip unknown byte */
2339 if ((pkg_header & 0x40) == 0) {
2340 pkg_subseq = (*data++) & 0x7f;
2347 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2350 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2354 goto not_enough_data;
2356 pkg_seqnum = *data++;
2360 GST_DEBUG_OBJECT (rmdemux,
2361 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2362 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2364 /* calc size of fragment */
2365 if ((pkg_header & 0xc0) == 0x80) {
2366 fragment_size = pkg_offset;
2368 if ((pkg_header & 0xc0) == 0)
2369 fragment_size = size;
2371 fragment_size = pkg_length;
2373 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2375 /* get the fragment */
2376 fragment = gst_buffer_create_sub (in, data - base, fragment_size);
2378 if (pkg_subseq == 1) {
2379 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2380 gst_adapter_clear (stream->adapter);
2381 stream->frag_current = 0;
2382 stream->frag_count = 0;
2383 stream->frag_length = pkg_length;
2384 } else if (pkg_subseq == 0) {
2385 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2386 stream->frag_current = 0;
2387 stream->frag_count = 0;
2388 stream->frag_length = fragment_size;
2391 /* put fragment in adapter */
2392 gst_adapter_push (stream->adapter, fragment);
2393 stream->frag_offset[stream->frag_count] = stream->frag_current;
2394 stream->frag_current += fragment_size;
2395 stream->frag_count++;
2397 if (stream->frag_count > MAX_FRAGS)
2398 goto too_many_fragments;
2400 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2401 stream->frag_current, stream->frag_length);
2403 /* flush fragment when complete */
2404 if (stream->frag_current >= stream->frag_length) {
2410 /* calculate header size, which is:
2411 * 1 byte for the number of fragments - 1
2412 * for each fragment:
2413 * 4 bytes 0x00000001 little endian
2414 * 4 bytes fragment offset
2416 * This is also the matroska header for realvideo, the decoder needs the
2417 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2418 * in front of the data.
2420 header_size = 1 + (8 * (stream->frag_count));
2422 GST_DEBUG_OBJECT (rmdemux,
2423 "fragmented completed. count %d, header_size %u", stream->frag_count,
2426 avail = gst_adapter_available (stream->adapter);
2428 out = gst_buffer_new_and_alloc (header_size + avail);
2429 outdata = GST_BUFFER_DATA (out);
2432 *outdata++ = stream->frag_count - 1;
2433 for (i = 0; i < stream->frag_count; i++) {
2434 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2436 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2440 /* copy packet data after the header now */
2441 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2442 gst_adapter_flush (stream->adapter, avail);
2444 stream->frag_current = 0;
2445 stream->frag_count = 0;
2446 stream->frag_length = 0;
2448 gst_buffer_set_caps (out, GST_PAD_CAPS (stream->pad));
2450 if (timestamp != -1) {
2451 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2452 timestamp -= rmdemux->first_ts;
2456 if (rmdemux->base_ts != -1)
2457 timestamp += rmdemux->base_ts;
2460 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2462 GST_BUFFER_TIMESTAMP (out) = timestamp;
2464 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2465 GST_TIME_ARGS (timestamp));
2467 if (stream->discont) {
2468 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2469 stream->discont = FALSE;
2472 ret = gst_pad_push (stream->pad, out);
2473 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2474 if (ret != GST_FLOW_OK)
2477 timestamp = GST_CLOCK_TIME_NONE;
2479 data += fragment_size;
2480 size -= fragment_size;
2482 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2484 gst_buffer_unref (in);
2491 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2493 gst_buffer_unref (in);
2498 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2499 ("Got more fragments (%u) than can be handled (%u)",
2500 stream->frag_count, MAX_FRAGS), (NULL));
2501 gst_buffer_unref (in);
2502 return GST_FLOW_ERROR;
2506 static GstFlowReturn
2507 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2508 GstBuffer * in, guint offset, guint16 version,
2509 GstClockTime timestamp, gboolean key)
2511 GstFlowReturn ret, cret;
2516 data = GST_BUFFER_DATA (in) + offset;
2517 size = GST_BUFFER_SIZE (in) - offset;
2519 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
2520 GST_BUFFER_OFFSET_NONE, size, GST_PAD_CAPS (stream->pad), &buffer);
2522 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2523 if (ret != GST_FLOW_OK)
2526 memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, size);
2528 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2529 timestamp -= rmdemux->first_ts;
2533 if (rmdemux->base_ts != -1)
2534 timestamp += rmdemux->base_ts;
2536 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2538 if (stream->needs_descrambling) {
2539 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2540 GST_TIME_ARGS (timestamp));
2541 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2543 GST_LOG_OBJECT (rmdemux,
2544 "Pushing buffer of size %d, timestamp %" GST_TIME_FORMAT "to pad %s",
2545 GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (timestamp),
2546 GST_PAD_NAME (stream->pad));
2548 if (stream->discont) {
2549 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2550 stream->discont = FALSE;
2552 ret = gst_pad_push (stream->pad, buffer);
2555 gst_buffer_unref (in);
2562 GST_DEBUG_OBJECT (rmdemux, "pad alloc returned %d", ret);
2563 gst_buffer_unref (in);
2568 static GstFlowReturn
2569 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2572 GstRMDemuxStream *stream;
2574 GstFlowReturn cret, ret;
2575 GstClockTime timestamp;
2577 guint8 *data, *base;
2581 base = data = GST_BUFFER_DATA (in);
2582 size = GST_BUFFER_SIZE (in);
2585 id = RMDEMUX_GUINT16_GET (data);
2587 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2588 if (!stream || !stream->pad)
2589 goto unknown_stream;
2591 /* timestamp in Msec */
2592 ts = RMDEMUX_GUINT32_GET (data + 2);
2593 timestamp = ts * GST_MSECOND;
2595 gst_segment_set_last_stop (&rmdemux->segment, GST_FORMAT_TIME, timestamp);
2597 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2598 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2599 GST_TIME_ARGS (timestamp), size, version, ts);
2601 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2602 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2603 GST_TIME_ARGS (timestamp));
2604 rmdemux->first_ts = timestamp;
2607 /* skip stream_id and timestamp */
2612 flags = GST_READ_UINT8 (data + 1);
2617 /* version 1 has an extra byte */
2622 key = (flags & 0x02) != 0;
2623 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2625 if (rmdemux->need_newsegment) {
2628 event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
2629 rmdemux->segment.format, rmdemux->segment.start,
2630 rmdemux->segment.stop, rmdemux->segment.time);
2632 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2633 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2635 gst_rmdemux_send_event (rmdemux, event);
2636 rmdemux->need_newsegment = FALSE;
2639 if (stream->pending_tags != NULL) {
2640 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2641 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (rmdemux), stream->pad,
2642 stream->pending_tags);
2643 stream->pending_tags = NULL;
2646 if ((rmdemux->offset + size) <= stream->seek_offset) {
2647 GST_DEBUG_OBJECT (rmdemux,
2648 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2649 stream->id, stream->seek_offset, rmdemux->offset, size);
2654 /* do special headers */
2655 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2657 gst_rmdemux_parse_video_packet (rmdemux, stream, in, data - base,
2658 version, timestamp, key);
2659 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2661 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, data - base,
2662 version, timestamp, key);
2666 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2674 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2681 gst_rmdemux_plugin_init (GstPlugin * plugin)
2683 return gst_element_register (plugin, "rmdemux",
2684 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);