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.
33 #include "rdtmanager.h"
41 #define RMDEMUX_GUINT32_GET(a) GST_READ_UINT32_BE(a)
42 #define RMDEMUX_GUINT16_GET(a) GST_READ_UINT16_BE(a)
43 #define RMDEMUX_FOURCC_GET(a) GST_READ_UINT32_LE(a)
44 #define HEADER_SIZE 10
49 typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
51 struct _GstRMDemuxStream
60 GstFlowReturn last_flow;
64 GstRMDemuxIndex *index;
66 gint framerate_numerator;
67 gint framerate_denominator;
73 guint16 rate; /* samplerate */
74 guint16 n_channels; /* channels */
75 guint16 sample_width; /* bits_per_sample */
76 guint16 leaf_size; /* subpacket_size */
77 guint32 packet_size; /* coded_frame_size */
79 guint32 extra_data_size; /* codec_data_length */
80 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 GstElementDetails gst_rmdemux_details = {
110 "Demultiplex a RealMedia file into audio and video streams",
111 "David Schleef <ds@schleef.org>"
114 static GstStaticPadTemplate gst_rmdemux_sink_template =
115 GST_STATIC_PAD_TEMPLATE ("sink",
118 GST_STATIC_CAPS ("application/vnd.rn-realmedia")
121 static GstStaticPadTemplate gst_rmdemux_videosrc_template =
122 GST_STATIC_PAD_TEMPLATE ("video_%02d",
125 GST_STATIC_CAPS_ANY);
127 static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
128 GST_STATIC_PAD_TEMPLATE ("audio_%02d",
131 GST_STATIC_CAPS_ANY);
133 GST_DEBUG_CATEGORY_STATIC (rmdemux_debug);
134 #define GST_CAT_DEFAULT rmdemux_debug
136 static GstElementClass *parent_class = NULL;
138 static void gst_rmdemux_class_init (GstRMDemuxClass * klass);
139 static void gst_rmdemux_base_init (GstRMDemuxClass * klass);
140 static void gst_rmdemux_init (GstRMDemux * rmdemux);
141 static void gst_rmdemux_finalize (GObject * object);
142 static GstStateChangeReturn gst_rmdemux_change_state (GstElement * element,
143 GstStateChange transition);
144 static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer);
145 static void gst_rmdemux_loop (GstPad * pad);
146 static gboolean gst_rmdemux_sink_activate (GstPad * sinkpad);
147 static gboolean gst_rmdemux_sink_activate_push (GstPad * sinkpad,
149 static gboolean gst_rmdemux_sink_activate_pull (GstPad * sinkpad,
151 static gboolean gst_rmdemux_sink_event (GstPad * pad, GstEvent * event);
152 static gboolean gst_rmdemux_src_event (GstPad * pad, GstEvent * event);
153 static void gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event);
154 static const GstQueryType *gst_rmdemux_src_query_types (GstPad * pad);
155 static gboolean gst_rmdemux_src_query (GstPad * pad, GstQuery * query);
156 static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux,
159 static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data,
161 static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data,
163 static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux,
164 const guint8 * data, int length);
165 static guint gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data,
167 static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data,
169 static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data,
171 static GstFlowReturn gst_rmdemux_parse_packet (GstRMDemux * rmdemux,
172 GstBuffer * in, guint16 version);
173 static void gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux,
174 const guint8 * data, int length);
175 static void gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
176 GstRMDemuxStream * stream);
177 static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
181 gst_rmdemux_get_type (void)
183 static GType rmdemux_type = 0;
186 static const GTypeInfo rmdemux_info = {
187 sizeof (GstRMDemuxClass),
188 (GBaseInitFunc) gst_rmdemux_base_init, NULL,
189 (GClassInitFunc) gst_rmdemux_class_init,
190 NULL, NULL, sizeof (GstRMDemux), 0,
191 (GInstanceInitFunc) gst_rmdemux_init,
195 g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
202 gst_rmdemux_base_init (GstRMDemuxClass * klass)
204 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
206 gst_element_class_add_pad_template (element_class,
207 gst_static_pad_template_get (&gst_rmdemux_sink_template));
208 gst_element_class_add_pad_template (element_class,
209 gst_static_pad_template_get (&gst_rmdemux_videosrc_template));
210 gst_element_class_add_pad_template (element_class,
211 gst_static_pad_template_get (&gst_rmdemux_audiosrc_template));
212 gst_element_class_set_details (element_class, &gst_rmdemux_details);
216 gst_rmdemux_class_init (GstRMDemuxClass * klass)
218 GObjectClass *gobject_class;
219 GstElementClass *gstelement_class;
221 gobject_class = (GObjectClass *) klass;
222 gstelement_class = (GstElementClass *) klass;
224 parent_class = g_type_class_peek_parent (klass);
226 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rmdemux_change_state);
228 GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
229 0, "Demuxer for Realmedia streams");
231 gobject_class->finalize = gst_rmdemux_finalize;
235 gst_rmdemux_finalize (GObject * object)
237 GstRMDemux *rmdemux = GST_RMDEMUX (object);
239 if (rmdemux->adapter) {
240 g_object_unref (rmdemux->adapter);
241 rmdemux->adapter = NULL;
244 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
248 gst_rmdemux_init (GstRMDemux * rmdemux)
251 gst_pad_new_from_static_template (&gst_rmdemux_sink_template, "sink");
252 gst_pad_set_event_function (rmdemux->sinkpad,
253 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_event));
254 gst_pad_set_chain_function (rmdemux->sinkpad,
255 GST_DEBUG_FUNCPTR (gst_rmdemux_chain));
256 gst_pad_set_activate_function (rmdemux->sinkpad,
257 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate));
258 gst_pad_set_activatepull_function (rmdemux->sinkpad,
259 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_pull));
260 gst_pad_set_activatepush_function (rmdemux->sinkpad,
261 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_push));
263 gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
265 rmdemux->adapter = gst_adapter_new ();
266 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
267 rmdemux->need_newsegment = TRUE;
271 gst_rmdemux_sink_event (GstPad * pad, GstEvent * event)
276 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
278 GST_LOG_OBJECT (pad, "%s event", GST_EVENT_TYPE_NAME (event));
280 switch (GST_EVENT_TYPE (event)) {
281 case GST_EVENT_NEWSEGMENT:
282 gst_event_unref (event);
286 ret = gst_pad_event_default (pad, event);
290 gst_object_unref (rmdemux);
295 gst_rmdemux_src_event (GstPad * pad, GstEvent * event)
299 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
301 GST_LOG_OBJECT (rmdemux, "handling src event");
303 switch (GST_EVENT_TYPE (event)) {
308 GST_LOG_OBJECT (rmdemux, "Event on src: SEEK");
309 /* can't seek if we are not seekable, FIXME could pass the
310 * seek query upstream after converting it to bytes using
311 * the average bitrate of the stream. */
312 if (!rmdemux->seekable) {
314 GST_DEBUG ("seek on non seekable stream");
318 GST_OBJECT_LOCK (rmdemux);
319 /* check if we can do the seek now */
320 running = rmdemux->running;
321 GST_OBJECT_UNLOCK (rmdemux);
323 /* now do the seek */
325 ret = gst_rmdemux_perform_seek (rmdemux, event);
329 gst_event_unref (event);
333 GST_LOG_OBJECT (rmdemux, "Event on src: type=%d", GST_EVENT_TYPE (event));
334 ret = gst_pad_event_default (pad, event);
341 GST_DEBUG ("error handling event");
342 gst_event_unref (event);
346 /* Validate that this looks like a reasonable point to seek to */
348 gst_rmdemux_validate_offset (GstRMDemux * rmdemux)
351 GstFlowReturn flowret;
352 guint16 version, length;
355 flowret = gst_pad_pull_range (rmdemux->sinkpad, rmdemux->offset, 4, &buffer);
357 if (flowret != GST_FLOW_OK) {
358 GST_DEBUG_OBJECT (rmdemux, "Failed to pull data at offset %d",
362 /* TODO: Can we also be seeking to a 'DATA' chunk header? Check this.
363 * Also, for the case we currently handle, can we check any more? It's pretty
364 * sucky to not be validating a little more heavily than this... */
365 /* This should now be the start of a data packet header. That begins with
366 * a 2-byte 'version' field, which has to be 0 or 1, then a length. I'm not
367 * certain what values are valid for length, but it must always be at least
368 * 4 bytes, and we can check that it won't take us past our known total size
371 version = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer));
372 if (version != 0 && version != 1) {
373 GST_DEBUG_OBJECT (rmdemux, "Expected version 0 or 1, got %d",
378 length = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer) + 2);
379 /* TODO: Also check against total stream length */
381 GST_DEBUG_OBJECT (rmdemux, "Expected length >= 4, got %d", (int) length);
386 rmdemux->offset += 4;
387 gst_adapter_clear (rmdemux->adapter);
388 gst_adapter_push (rmdemux->adapter, buffer);
390 GST_WARNING_OBJECT (rmdemux, "Failed to validate seek offset at %d",
398 find_seek_offset_bytes (GstRMDemux * rmdemux, guint target)
402 gboolean ret = FALSE;
407 for (cur = rmdemux->streams; cur; cur = cur->next) {
408 GstRMDemuxStream *stream = cur->data;
410 /* Search backwards through this stream's index until we find the first
411 * timestamp before our target time */
412 for (i = stream->index_length - 1; i >= 0; i--) {
413 if (stream->index[i].offset <= target) {
414 /* Set the seek_offset for the stream so we don't bother parsing it
415 * until we've passed that point */
416 stream->seek_offset = stream->index[i].offset;
417 rmdemux->offset = stream->index[i].offset;
427 find_seek_offset_time (GstRMDemux * rmdemux, GstClockTime time)
430 gboolean ret = FALSE;
432 GstClockTime earliest = GST_CLOCK_TIME_NONE;
435 for (cur = rmdemux->streams; cur; cur = cur->next, n_stream++) {
436 GstRMDemuxStream *stream = cur->data;
438 /* Search backwards through this stream's index until we find the first
439 * timestamp before our target time */
440 for (i = stream->index_length - 1; i >= 0; i--) {
441 if (stream->index[i].timestamp <= time) {
442 /* Set the seek_offset for the stream so we don't bother parsing it
443 * until we've passed that point */
444 stream->seek_offset = stream->index[i].offset;
446 /* If it's also the earliest timestamp we've seen of all streams, then
449 if (earliest == GST_CLOCK_TIME_NONE ||
450 stream->index[i].timestamp < earliest) {
451 earliest = stream->index[i].timestamp;
452 rmdemux->offset = stream->index[i].offset;
453 GST_DEBUG_OBJECT (rmdemux,
454 "We're looking for %" GST_TIME_FORMAT
455 " and we found that stream %d has the latest index at %"
456 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start), n_stream,
457 GST_TIME_ARGS (earliest));
470 gst_rmdemux_perform_seek (GstRMDemux * rmdemux, GstEvent * event)
474 gboolean flush, accurate;
478 GstSeekType cur_type, stop_type;
483 GST_DEBUG_OBJECT (rmdemux, "seek with event");
485 gst_event_parse_seek (event, &rate, &format, &flags,
486 &cur_type, &cur, &stop_type, &stop);
488 /* we can only seek on time */
489 if (format != GST_FORMAT_TIME) {
490 GST_DEBUG_OBJECT (rmdemux, "can only seek on TIME");
493 /* cannot yet do backwards playback */
495 GST_DEBUG_OBJECT (rmdemux, "can only seek with positive rate, not %lf",
500 GST_DEBUG_OBJECT (rmdemux, "seek without event");
506 GST_DEBUG_OBJECT (rmdemux, "seek, rate %g", rate);
508 flush = flags & GST_SEEK_FLAG_FLUSH;
509 accurate = flags & GST_SEEK_FLAG_ACCURATE;
511 /* first step is to unlock the streaming thread if it is
512 * blocked in a chain call, we do this by starting the flush. */
514 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_start ());
515 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_start ());
517 gst_pad_pause_task (rmdemux->sinkpad);
520 GST_LOG_OBJECT (rmdemux, "Done starting flushes");
522 /* now grab the stream lock so that streaming cannot continue, for
523 * non flushing seeks when the element is in PAUSED this could block
525 GST_PAD_STREAM_LOCK (rmdemux->sinkpad);
527 GST_LOG_OBJECT (rmdemux, "Took streamlock");
529 /* close current segment first */
530 if (rmdemux->segment_running && !flush) {
533 newseg = gst_event_new_new_segment (TRUE, rmdemux->segment.rate,
534 GST_FORMAT_TIME, rmdemux->segment.start,
535 rmdemux->segment.last_stop, rmdemux->segment.time);
537 gst_rmdemux_send_event (rmdemux, newseg);
541 gst_segment_set_seek (&rmdemux->segment, rate, format, flags,
542 cur_type, cur, stop_type, stop, &update);
545 GST_DEBUG_OBJECT (rmdemux, "segment positions set to %" GST_TIME_FORMAT "-%"
546 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start),
547 GST_TIME_ARGS (rmdemux->segment.stop));
549 /* we need to stop flushing on the sinkpad as we're going to use it
550 * next. We can do this as we have the STREAM lock now. */
551 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop ());
553 GST_LOG_OBJECT (rmdemux, "Pushed FLUSH_STOP event");
555 /* For each stream, find the first index offset equal to or before our seek
556 * target. Of these, find the smallest offset. That's where we seek to.
558 * Then we pull 4 bytes from that offset, and validate that we've seeked to a
559 * what looks like a plausible packet.
560 * If that fails, restart, with the seek target set to one less than the
561 * offset we just tried. If we run out of places to try, treat that as a fatal
564 if (!find_seek_offset_time (rmdemux, rmdemux->segment.last_stop)) {
565 GST_LOG_OBJECT (rmdemux, "Failed to find seek offset by time");
570 GST_LOG_OBJECT (rmdemux, "Validating offset %u", rmdemux->offset);
571 validated = gst_rmdemux_validate_offset (rmdemux);
573 GST_INFO_OBJECT (rmdemux, "Failed to validate offset at %u",
575 if (!find_seek_offset_bytes (rmdemux, rmdemux->offset - 1)) {
579 validated = gst_rmdemux_validate_offset (rmdemux);
582 GST_LOG_OBJECT (rmdemux, "Found final offset. Excellent!");
584 /* now we have a new position, prepare for streaming again */
586 /* Reset the demuxer state */
587 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
590 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop ());
592 /* must send newsegment event from streaming thread, so just set flag */
593 rmdemux->need_newsegment = TRUE;
595 /* notify start of new segment */
596 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
597 gst_element_post_message (GST_ELEMENT_CAST (rmdemux),
598 gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
599 GST_FORMAT_TIME, rmdemux->segment.last_stop));
602 /* restart our task since it might have been stopped when we did the
604 gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
609 /* streaming can continue now */
610 GST_PAD_STREAM_UNLOCK (rmdemux->sinkpad);
616 GST_DEBUG_OBJECT (rmdemux, "seek failed");
623 gst_rmdemux_src_query (GstPad * pad, GstQuery * query)
625 gboolean res = FALSE;
628 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
630 switch (GST_QUERY_TYPE (query)) {
631 case GST_QUERY_POSITION:
632 GST_DEBUG_OBJECT (rmdemux, "Position query: no idea from demuxer!");
634 case GST_QUERY_DURATION:{
637 gst_query_parse_duration (query, &fmt, NULL);
638 if (fmt == GST_FORMAT_TIME) {
639 GST_OBJECT_LOCK (rmdemux);
640 if (G_LIKELY (rmdemux->running)) {
641 gst_query_set_duration (query, GST_FORMAT_TIME, rmdemux->duration);
642 GST_DEBUG_OBJECT (rmdemux, "duration set to %" GST_TIME_FORMAT,
643 GST_TIME_ARGS (rmdemux->duration));
646 GST_OBJECT_UNLOCK (rmdemux);
650 case GST_QUERY_SEEKING:{
653 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
654 if (fmt == GST_FORMAT_TIME) {
655 GST_OBJECT_LOCK (rmdemux);
656 if (G_LIKELY (rmdemux->running)) {
657 gst_query_set_seeking (query, GST_FORMAT_TIME, rmdemux->seekable,
658 0, rmdemux->duration);
661 GST_OBJECT_UNLOCK (rmdemux);
666 res = gst_pad_query_default (pad, query);
670 gst_object_unref (rmdemux);
674 static const GstQueryType *
675 gst_rmdemux_src_query_types (GstPad * pad)
677 static const GstQueryType query_types[] = {
688 gst_rmdemux_reset (GstRMDemux * rmdemux)
692 GST_OBJECT_LOCK (rmdemux);
693 rmdemux->running = FALSE;
694 GST_OBJECT_UNLOCK (rmdemux);
696 for (cur = rmdemux->streams; cur; cur = cur->next) {
697 GstRMDemuxStream *stream = cur->data;
699 g_object_unref (stream->adapter);
700 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
701 gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
702 if (stream->pending_tags)
703 gst_tag_list_free (stream->pending_tags);
704 if (stream->subpackets)
705 g_ptr_array_free (stream->subpackets, TRUE);
706 g_free (stream->index);
709 g_slist_free (rmdemux->streams);
710 rmdemux->streams = NULL;
711 rmdemux->n_audio_streams = 0;
712 rmdemux->n_video_streams = 0;
714 gst_adapter_clear (rmdemux->adapter);
715 rmdemux->state = RMDEMUX_STATE_HEADER;
716 rmdemux->have_pads = FALSE;
718 gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
719 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
720 rmdemux->need_newsegment = TRUE;
723 static GstStateChangeReturn
724 gst_rmdemux_change_state (GstElement * element, GstStateChange transition)
726 GstRMDemux *rmdemux = GST_RMDEMUX (element);
727 GstStateChangeReturn res;
729 switch (transition) {
730 case GST_STATE_CHANGE_NULL_TO_READY:
732 case GST_STATE_CHANGE_READY_TO_PAUSED:
733 rmdemux->state = RMDEMUX_STATE_HEADER;
734 rmdemux->have_pads = FALSE;
735 gst_segment_init (&rmdemux->segment, GST_FORMAT_TIME);
736 rmdemux->running = FALSE;
738 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
744 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
746 switch (transition) {
747 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
749 case GST_STATE_CHANGE_PAUSED_TO_READY:{
750 gst_rmdemux_reset (rmdemux);
753 case GST_STATE_CHANGE_READY_TO_NULL:
762 /* this function is called when the pad is activated and should start
765 * We check if we can do random access to decide if we work push or
769 gst_rmdemux_sink_activate (GstPad * sinkpad)
771 if (gst_pad_check_pull_range (sinkpad)) {
772 return gst_pad_activate_pull (sinkpad, TRUE);
774 return gst_pad_activate_push (sinkpad, TRUE);
778 /* this function gets called when we activate ourselves in push mode.
779 * We cannot seek (ourselves) in the stream */
781 gst_rmdemux_sink_activate_push (GstPad * pad, gboolean active)
785 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
787 GST_DEBUG_OBJECT (rmdemux, "activate_push");
789 rmdemux->seekable = FALSE;
794 /* this function gets called when we activate ourselves in pull mode.
795 * We can perform random access to the resource and we start a task
796 * to start reading */
798 gst_rmdemux_sink_activate_pull (GstPad * pad, gboolean active)
802 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
804 GST_DEBUG_OBJECT (rmdemux, "activate_pull");
807 rmdemux->seekable = TRUE;
809 rmdemux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
810 rmdemux->data_offset = G_MAXUINT;
812 return gst_pad_start_task (pad, (GstTaskFunction) gst_rmdemux_loop, pad);
814 return gst_pad_stop_task (pad);
818 /* random access mode - just pass over to our chain function */
820 gst_rmdemux_loop (GstPad * pad)
824 GstFlowReturn ret = GST_FLOW_OK;
827 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
829 GST_LOG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
830 rmdemux->loop_state, rmdemux->offset);
832 switch (rmdemux->state) {
833 case RMDEMUX_STATE_HEADER:
836 case RMDEMUX_STATE_HEADER_DATA:
839 case RMDEMUX_STATE_DATA_PACKET:
840 size = rmdemux->avg_packet_size;
842 case RMDEMUX_STATE_EOS:
843 GST_LOG_OBJECT (rmdemux, "At EOS, pausing task");
844 ret = GST_FLOW_UNEXPECTED;
847 GST_LOG_OBJECT (rmdemux, "Default: requires %d bytes (state is %d)",
848 (int) rmdemux->size, rmdemux->state);
849 size = rmdemux->size;
852 ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
853 if (ret != GST_FLOW_OK) {
854 if (rmdemux->offset == rmdemux->index_offset) {
855 /* The index isn't available so forget about it */
856 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
857 rmdemux->offset = rmdemux->data_offset;
858 GST_OBJECT_LOCK (rmdemux);
859 rmdemux->running = TRUE;
860 rmdemux->seekable = FALSE;
861 GST_OBJECT_UNLOCK (rmdemux);
864 GST_DEBUG_OBJECT (rmdemux, "Unable to pull %d bytes at offset 0x%08x "
865 "(pull_range returned flow %s, state is %d)", (gint) size,
866 rmdemux->offset, gst_flow_get_name (ret), GST_STATE (rmdemux));
871 size = GST_BUFFER_SIZE (buffer);
873 /* Defer to the chain function */
874 ret = gst_rmdemux_chain (pad, buffer);
875 if (ret != GST_FLOW_OK) {
876 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
881 rmdemux->offset += size;
883 switch (rmdemux->loop_state) {
884 case RMDEMUX_LOOP_STATE_HEADER:
885 if (rmdemux->offset >= rmdemux->data_offset) {
886 /* It's the end of the header */
887 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
888 rmdemux->offset = rmdemux->index_offset;
891 case RMDEMUX_LOOP_STATE_INDEX:
892 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
893 if (rmdemux->index_offset == 0) {
894 /* We've read the last index */
895 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
896 rmdemux->offset = rmdemux->data_offset;
897 GST_OBJECT_LOCK (rmdemux);
898 rmdemux->running = TRUE;
899 GST_OBJECT_UNLOCK (rmdemux);
901 /* Get the next index */
902 rmdemux->offset = rmdemux->index_offset;
906 case RMDEMUX_LOOP_STATE_DATA:
915 const gchar *reason = gst_flow_get_name (ret);
917 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
918 rmdemux->segment_running = FALSE;
919 gst_pad_pause_task (rmdemux->sinkpad);
921 if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
922 if (ret == GST_FLOW_UNEXPECTED) {
923 /* perform EOS logic */
924 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
927 /* for segment playback we need to post when (in stream time)
928 * we stopped, this is either stop (when set) or the duration. */
929 if ((stop = rmdemux->segment.stop) == -1)
930 stop = rmdemux->segment.duration;
932 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
933 gst_element_post_message (GST_ELEMENT (rmdemux),
934 gst_message_new_segment_done (GST_OBJECT (rmdemux),
935 GST_FORMAT_TIME, stop));
937 /* normal playback, send EOS to all linked pads */
938 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
939 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
942 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
943 (NULL), ("stream stopped, reason %s", reason));
944 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
952 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
956 for (i = 0; i < 4; i++) {
957 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
965 gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer)
967 GstFlowReturn ret = GST_FLOW_OK;
972 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
974 gst_adapter_push (rmdemux->adapter, buffer);
976 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %d",
977 GST_BUFFER_SIZE (buffer));
980 avail = gst_adapter_available (rmdemux->adapter);
982 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
983 switch (rmdemux->state) {
984 case RMDEMUX_STATE_HEADER:
986 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
989 data = gst_adapter_peek (rmdemux->adapter, HEADER_SIZE);
991 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
992 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
993 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
995 /* Sanity-check. We assume that the FOURCC is printable ASCII */
996 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
997 /* Failed. Remain in HEADER state, try again... We flush only
998 * the actual FOURCC, not the entire header, because we could
999 * need to resync anywhere at all... really, this should never
1001 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
1003 gst_adapter_flush (rmdemux->adapter, 4);
1008 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1010 " size=%08x object_version=%d",
1011 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1012 rmdemux->object_version);
1014 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1016 switch (rmdemux->object_id) {
1017 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1018 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1020 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1021 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1023 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1024 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1026 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1027 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1029 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1030 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1032 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1033 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1036 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1041 case RMDEMUX_STATE_HEADER_UNKNOWN:
1043 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1046 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1047 GST_FOURCC_ARGS (rmdemux->object_id));
1049 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1050 rmdemux->state = RMDEMUX_STATE_HEADER;
1053 case RMDEMUX_STATE_HEADER_RMF:
1055 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1058 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1059 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1061 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1064 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1065 rmdemux->state = RMDEMUX_STATE_HEADER;
1068 case RMDEMUX_STATE_HEADER_PROP:
1070 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1072 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1074 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1076 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1077 rmdemux->state = RMDEMUX_STATE_HEADER;
1080 case RMDEMUX_STATE_HEADER_MDPR:
1082 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1084 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1086 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1088 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1089 rmdemux->state = RMDEMUX_STATE_HEADER;
1092 case RMDEMUX_STATE_HEADER_CONT:
1094 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1096 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1098 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1100 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1101 rmdemux->state = RMDEMUX_STATE_HEADER;
1104 case RMDEMUX_STATE_HEADER_DATA:
1106 /* If we haven't already done so then signal there are no more pads */
1107 if (!rmdemux->have_pads) {
1108 GST_LOG_OBJECT (rmdemux, "no more pads");
1109 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1110 rmdemux->have_pads = TRUE;
1113 /* The actual header is only 8 bytes */
1114 rmdemux->size = DATA_SIZE;
1115 GST_LOG_OBJECT (rmdemux, "data available %d",
1116 gst_adapter_available (rmdemux->adapter));
1117 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1120 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1122 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1124 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1126 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1129 case RMDEMUX_STATE_HEADER_INDX:
1131 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1133 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1135 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1137 /* Only flush the header */
1138 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1140 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1143 case RMDEMUX_STATE_INDX_DATA:
1145 /* There's not always an data to get... */
1146 if (rmdemux->size > 0) {
1147 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1150 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1152 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1154 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1157 rmdemux->state = RMDEMUX_STATE_HEADER;
1160 case RMDEMUX_STATE_DATA_PACKET:
1162 if (gst_adapter_available (rmdemux->adapter) < 2)
1165 data = gst_adapter_peek (rmdemux->adapter, 2);
1166 version = RMDEMUX_GUINT16_GET (data);
1167 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1169 if (version == 0 || version == 1) {
1172 if (gst_adapter_available (rmdemux->adapter) < 4)
1174 data = gst_adapter_peek (rmdemux->adapter, 4);
1176 length = RMDEMUX_GUINT16_GET (data + 2);
1177 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1180 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1181 /* Invalid, just drop it */
1182 gst_adapter_flush (rmdemux->adapter, 4);
1186 avail = gst_adapter_available (rmdemux->adapter);
1190 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1193 /* flush version and length */
1194 gst_adapter_flush (rmdemux->adapter, 4);
1197 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1199 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1200 rmdemux->chunk_index++;
1203 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1204 rmdemux->state = RMDEMUX_STATE_HEADER;
1207 gst_adapter_flush (rmdemux->adapter, 2);
1209 if (rmdemux->data_offset == 0) {
1210 GST_LOG_OBJECT (rmdemux,
1211 "No further data, internal demux state EOS");
1212 rmdemux->state = RMDEMUX_STATE_EOS;
1214 rmdemux->state = RMDEMUX_STATE_HEADER;
1218 case RMDEMUX_STATE_EOS:
1219 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1222 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1231 static GstRMDemuxStream *
1232 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1236 for (cur = rmdemux->streams; cur; cur = cur->next) {
1237 GstRMDemuxStream *stream = cur->data;
1239 if (stream->id == id) {
1248 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1252 for (cur = rmdemux->streams; cur; cur = cur->next) {
1253 GstRMDemuxStream *stream = cur->data;
1255 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1256 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1258 switch (GST_EVENT_TYPE (event)) {
1259 case GST_EVENT_FLUSH_STOP:
1260 stream->last_ts = -1;
1261 stream->next_ts = -1;
1262 stream->last_seq = -1;
1263 stream->next_seq = -1;
1264 stream->last_flow = GST_FLOW_OK;
1269 gst_event_ref (event);
1270 gst_pad_push_event (stream->pad, event);
1272 gst_event_unref (event);
1276 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1278 GstCaps *stream_caps = NULL;
1279 const gchar *codec_tag = NULL;
1280 const gchar *codec_name = NULL;
1283 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1284 char *name = g_strdup_printf ("video_%02d", rmdemux->n_video_streams);
1287 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1290 codec_tag = GST_TAG_VIDEO_CODEC;
1292 switch (stream->fourcc) {
1293 case GST_RM_VDO_RV10:
1294 codec_name = "Real Video 1.0";
1297 case GST_RM_VDO_RV20:
1298 codec_name = "Real Video 2.0";
1301 case GST_RM_VDO_RV30:
1302 codec_name = "Real Video 3.0";
1305 case GST_RM_VDO_RV40:
1306 codec_name = "Real Video 4.0";
1310 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1311 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1312 GST_WARNING_OBJECT (rmdemux,
1313 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1314 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1319 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1321 "format", G_TYPE_INT,
1322 (int) stream->format,
1323 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1327 gst_caps_set_simple (stream_caps,
1328 "width", G_TYPE_INT, stream->width,
1329 "height", G_TYPE_INT, stream->height,
1330 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1331 stream->framerate_denominator, NULL);
1333 rmdemux->n_video_streams++;
1335 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1336 char *name = g_strdup_printf ("audio_%02d", rmdemux->n_audio_streams);
1339 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1340 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1343 codec_tag = GST_TAG_AUDIO_CODEC;
1345 switch (stream->fourcc) {
1346 /* Older RealAudio Codecs */
1347 case GST_RM_AUD_14_4:
1348 codec_name = "Real Audio 14.4kbps";
1352 case GST_RM_AUD_28_8:
1353 codec_name = "Real Audio 28.8kbps";
1357 /* DolbyNet (Dolby AC3, low bitrate) */
1358 case GST_RM_AUD_DNET:
1359 codec_name = "AC-3 audio";
1361 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1362 (int) stream->rate, NULL);
1363 stream->needs_descrambling = TRUE;
1364 stream->subpackets_needed = 1;
1365 stream->subpackets = NULL;
1368 /* RealAudio 10 (AAC) */
1369 case GST_RM_AUD_RAAC:
1370 codec_name = "Real Audio 10 (AAC)";
1375 case GST_RM_AUD_RACP:
1376 /* FIXME: codec_name = */
1378 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1383 case GST_RM_AUD_ATRC:
1384 codec_name = "Sony ATRAC3";
1385 stream_caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
1388 /* RealAudio G2 audio */
1389 case GST_RM_AUD_COOK:
1390 codec_name = "Real Audio G2 (Cook)";
1392 stream->needs_descrambling = TRUE;
1393 stream->subpackets_needed = stream->height;
1394 stream->subpackets = NULL;
1397 /* RALF is lossless */
1398 case GST_RM_AUD_RALF:
1399 /* FIXME: codec_name = */
1400 GST_DEBUG_OBJECT (rmdemux, "RALF");
1401 stream_caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
1404 /* Sipro/ACELP.NET Voice Codec (MIME unknown) */
1405 case GST_RM_AUD_SIPR:
1406 /* FIXME: codec_name = */
1407 stream_caps = gst_caps_new_simple ("audio/x-sipro", NULL);
1411 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1412 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1413 GST_WARNING_OBJECT (rmdemux,
1414 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1415 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1421 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1422 (int) version, NULL);
1426 gst_caps_set_simple (stream_caps,
1427 "flavor", G_TYPE_INT, (int) stream->flavor,
1428 "rate", G_TYPE_INT, (int) stream->rate,
1429 "channels", G_TYPE_INT, (int) stream->n_channels,
1430 "width", G_TYPE_INT, (int) stream->sample_width,
1431 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1432 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1433 "height", G_TYPE_INT, (int) stream->height, NULL);
1435 rmdemux->n_audio_streams++;
1437 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1443 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1444 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1445 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1446 g_slist_length (rmdemux->streams));
1448 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1451 if (stream->pad && stream_caps) {
1453 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1454 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1456 /* add codec_data if there is any */
1457 if (stream->extra_data_size > 0) {
1460 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1461 memcpy (GST_BUFFER_DATA (buffer), stream->extra_data,
1462 stream->extra_data_size);
1464 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1467 gst_buffer_unref (buffer);
1470 gst_pad_use_fixed_caps (stream->pad);
1472 gst_pad_set_caps (stream->pad, stream_caps);
1473 gst_pad_set_event_function (stream->pad,
1474 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1475 gst_pad_set_query_type_function (stream->pad,
1476 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query_types));
1477 gst_pad_set_query_function (stream->pad,
1478 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1480 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1481 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1482 gst_pad_set_active (stream->pad, TRUE);
1483 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1485 /* save for later, we must send the tags after the newsegment event */
1486 if (codec_name != NULL && codec_tag != NULL) {
1487 stream->pending_tags = gst_tag_list_new ();
1488 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1489 codec_tag, codec_name, NULL);
1496 gst_caps_unref (stream_caps);
1500 re_skip_pascal_string (const guint8 * ptr)
1510 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1512 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1513 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1517 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1519 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1520 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1521 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1522 RMDEMUX_GUINT32_GET (data + 8));
1523 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1524 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1525 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1526 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1528 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1529 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1531 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1532 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1533 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1534 rmdemux->index_offset);
1535 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1536 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1537 rmdemux->data_offset);
1538 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1539 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1543 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1545 GstRMDemuxStream *stream;
1546 char *stream1_type_string;
1547 char *stream2_type_string;
1552 stream = g_new0 (GstRMDemuxStream, 1);
1554 stream->id = RMDEMUX_GUINT16_GET (data);
1555 stream->index = NULL;
1556 stream->seek_offset = 0;
1557 stream->last_ts = -1;
1558 stream->next_ts = -1;
1559 stream->last_flow = GST_FLOW_OK;
1560 stream->adapter = gst_adapter_new ();
1561 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1564 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1565 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1566 length - offset, &str_len);
1568 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1569 length - offset, &str_len);
1572 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1574 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1575 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1577 * so, we should not rely on it to know which stream type it is
1580 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1581 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1583 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1584 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1585 } else if (strcmp (stream2_type_string,
1586 "video/x-pn-multirate-realvideo") == 0) {
1587 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1588 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1589 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1590 } else if (strcmp (stream2_type_string,
1591 "audio/x-pn-multirate-realaudio") == 0) {
1592 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1593 } else if (strcmp (stream2_type_string,
1594 "audio/x-pn-multirate-realaudio-live") == 0) {
1595 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1596 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1597 /* Another audio type found in the real testsuite */
1598 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1599 } else if (strcmp (stream1_type_string, "") == 0 &&
1600 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1601 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1603 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1604 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1605 stream1_type_string, stream2_type_string);
1607 g_free (stream1_type_string);
1608 g_free (stream2_type_string);
1612 stream->subtype = stream_type;
1613 switch (stream_type) {
1615 case GST_RMDEMUX_STREAM_VIDEO:
1616 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1617 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1618 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1619 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1620 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1621 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1622 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1623 stream->extra_data_size = length - (offset + 26);
1624 stream->extra_data = (guint8 *) data + offset + 26;
1625 /* Natural way to represent framerates here requires unsigned 32 bit
1626 * numerator, which we don't have. For the nasty case, approximate...
1629 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1630 RMDEMUX_GUINT16_GET (data + offset + 24);
1631 if (numerator > G_MAXINT) {
1632 stream->framerate_numerator = (gint) (numerator >> 1);
1633 stream->framerate_denominator = 32768;
1635 stream->framerate_numerator = (gint) numerator;
1636 stream->framerate_denominator = 65536;
1640 GST_DEBUG_OBJECT (rmdemux,
1641 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1642 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1643 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1644 stream->rate, stream->framerate_numerator,
1645 stream->framerate_denominator, stream->subformat, stream->format,
1646 stream->extra_data_size);
1648 case GST_RMDEMUX_STREAM_AUDIO:{
1649 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1650 GST_INFO ("stream version = %u", stream->version);
1651 switch (stream->version) {
1653 stream->fourcc = GST_RM_AUD_14_4;
1654 stream->packet_size = 20;
1655 stream->rate = 8000;
1656 stream->n_channels = 1;
1657 stream->sample_width = 16;
1659 stream->leaf_size = 0;
1663 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1664 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1665 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1666 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1667 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1668 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1669 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1670 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1671 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1672 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1673 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1674 stream->extra_data_size);
1675 if (length - (offset + 73) >= stream->extra_data_size) {
1676 stream->extra_data = (guint8 *) data + offset + 73;
1678 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1679 stream->extra_data_size = 0;
1683 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1684 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1685 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1686 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1687 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1688 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1689 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1690 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1691 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1692 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1693 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1694 stream->extra_data_size);
1695 if (length - (offset + 78) >= stream->extra_data_size) {
1696 stream->extra_data = (guint8 *) data + offset + 78;
1698 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1699 stream->extra_data_size = 0;
1703 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1709 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1710 GST_DEBUG_OBJECT (rmdemux,
1711 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1712 stream->rate, stream->sample_width, stream->n_channels);
1716 case GST_RMDEMUX_STREAM_FILEINFO:
1720 /* Length of this section */
1721 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1722 RMDEMUX_GUINT32_GET (data + offset));
1725 /* Unknown : 00 00 00 00 */
1728 /* Number of variables that would follow (loop iterations) */
1729 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1732 while (element_nb) {
1733 /* Category Id : 00 00 00 XX 00 00 */
1737 offset += re_skip_pascal_string (data + offset);
1739 /* Variable Value Type */
1740 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1741 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1744 /* Variable Value */
1745 offset += re_skip_pascal_string (data + offset);
1751 case GST_RMDEMUX_STREAM_UNKNOWN:
1756 gst_rmdemux_add_stream (rmdemux, stream);
1760 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1765 n = RMDEMUX_GUINT32_GET (data);
1766 id = RMDEMUX_GUINT16_GET (data + 4);
1767 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1769 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1772 /* Point to the next index_stream */
1773 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1775 /* Return the length of the index */
1780 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1785 GstRMDemuxIndex *index;
1787 /* The number of index records */
1790 if (rmdemux->index_stream == NULL)
1793 /* don't parse the index a second time when operating pull-based and
1794 * reaching the end of the file */
1795 if (rmdemux->index_stream->index_length > 0) {
1796 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1800 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1801 rmdemux->index_stream->index = index;
1802 rmdemux->index_stream->index_length = n;
1804 for (i = 0; i < n; i++) {
1805 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1806 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1808 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1809 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1816 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1818 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1819 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1820 rmdemux->chunk_index = 0;
1821 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1822 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1826 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1830 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1832 gst_element_found_tags (GST_ELEMENT (rmdemux), tags);
1836 static GstFlowReturn
1837 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1842 /* store the value */
1843 stream->last_flow = ret;
1845 /* if it's success we can return the value right away */
1846 if (GST_FLOW_IS_SUCCESS (ret))
1849 /* any other error that is not-linked can be returned right
1851 if (ret != GST_FLOW_NOT_LINKED)
1854 for (cur = rmdemux->streams; cur; cur = cur->next) {
1855 GstRMDemuxStream *ostream = cur->data;
1857 ret = ostream->last_flow;
1858 /* some other return value (must be SUCCESS but we can return
1859 * other values as well) */
1860 if (ret != GST_FLOW_NOT_LINKED)
1863 /* if we get here, all other pads were unlinked and we return
1864 * NOT_LINKED then */
1870 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1871 GstRMDemuxStream * stream)
1873 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1876 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1877 stream->subpackets->len);
1878 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1879 g_ptr_array_set_size (stream->subpackets, 0);
1882 static GstFlowReturn
1883 gst_rmdemux_descramble_cook_audio (GstRMDemux * rmdemux,
1884 GstRMDemuxStream * stream)
1888 guint packet_size = stream->packet_size;
1889 guint height = stream->subpackets->len;
1890 guint leaf_size = stream->leaf_size;
1893 g_assert (stream->height == height);
1895 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1898 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
1899 GST_BUFFER_OFFSET_NONE, height * packet_size,
1900 GST_PAD_CAPS (stream->pad), &outbuf);
1902 if (ret != GST_FLOW_OK)
1905 for (p = 0; p < height; ++p) {
1906 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1907 guint8 *b_data = GST_BUFFER_DATA (b);
1910 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1912 for (x = 0; x < packet_size / leaf_size; ++x) {
1915 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1916 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1917 memcpy (GST_BUFFER_DATA (outbuf) + leaf_size * idx, b_data, leaf_size);
1918 b_data += leaf_size;
1922 /* some decoders, such as realaudiodec, need to be fed in packet units */
1923 for (p = 0; p < height; ++p) {
1926 subbuf = gst_buffer_create_sub (outbuf, p * packet_size, packet_size);
1927 gst_buffer_set_caps (subbuf, GST_PAD_CAPS (stream->pad));
1928 ret = gst_pad_push (stream->pad, subbuf);
1929 if (ret != GST_FLOW_OK)
1933 gst_buffer_unref (outbuf);
1937 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1942 static GstFlowReturn
1943 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1944 GstRMDemuxStream * stream)
1948 buf = g_ptr_array_index (stream->subpackets, 0);
1949 g_ptr_array_index (stream->subpackets, 0) = NULL;
1950 g_ptr_array_set_size (stream->subpackets, 0);
1952 buf = gst_rm_utils_descramble_dnet_buffer (buf);
1953 return gst_pad_push (stream->pad, buf);
1956 static GstFlowReturn
1957 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
1958 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
1962 if (stream->subpackets == NULL)
1963 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
1965 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
1966 stream->subpackets_needed, GST_BUFFER_SIZE (buf), keyframe);
1968 if (keyframe && stream->subpackets->len > 0) {
1969 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1972 g_ptr_array_add (stream->subpackets, buf);
1974 if (stream->subpackets->len < stream->subpackets_needed)
1977 g_assert (stream->subpackets->len >= 1);
1979 switch (stream->fourcc) {
1980 case GST_RM_AUD_DNET:
1981 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
1983 case GST_RM_AUD_COOK:
1984 ret = gst_rmdemux_descramble_cook_audio (rmdemux, stream);
1987 g_assert_not_reached ();
1994 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1995 guint8 * data, GstClockTime timestamp)
1999 GstClockTime ts = timestamp;
2001 if (timestamp == GST_CLOCK_TIME_NONE)
2004 /* only adjust when we have a stream with B frames */
2005 if (stream->format < 0x20200002)
2008 /* Fix timestamp. */
2009 switch (stream->fourcc) {
2010 case GST_RM_VDO_RV10:
2012 case GST_RM_VDO_RV20:
2015 * Bit 1- 2: frame type
2017 * Bit 10-22: sequence number
2020 frame_type = (data[0] >> 6) & 0x03;
2021 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2024 case GST_RM_VDO_RV30:
2028 * Bit 3: skip packet if 1
2029 * Bit 4- 5: frame type
2031 * Bit 13-25: sequence number
2034 frame_type = (data[0] >> 3) & 0x03;
2035 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2038 case GST_RM_VDO_RV40:
2041 * Bit 1: skip packet if 1
2042 * Bit 2- 3: frame type
2044 * Bit 14-26: sequence number
2047 frame_type = (data[0] >> 5) & 0x03;
2048 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2052 goto unknown_version;
2055 switch (frame_type) {
2059 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2061 if (stream->next_ts == -1)
2062 stream->next_ts = timestamp;
2064 timestamp = stream->next_ts;
2065 stream->last_ts = stream->next_ts;
2066 stream->next_ts = ts;
2067 stream->last_seq = stream->next_seq;
2068 stream->next_seq = seq;
2073 GST_LOG_OBJECT (rmdemux, "P frame");
2075 timestamp = stream->last_ts = stream->next_ts;
2076 if (seq < stream->next_seq)
2077 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2079 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2080 stream->last_seq = stream->next_seq;
2081 stream->next_seq = seq;
2086 GST_LOG_OBJECT (rmdemux, "B frame");
2088 if (seq < stream->last_seq) {
2090 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2092 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2097 goto unknown_frame_type;
2101 GST_LOG_OBJECT (rmdemux,
2102 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2103 GST_TIME_ARGS (timestamp));
2110 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2111 ("Unknown version: %i.", stream->version), (NULL));
2112 return GST_FLOW_ERROR;
2117 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2118 frame_type), (NULL));
2119 return GST_FLOW_ERROR;
2123 #define PARSE_NUMBER(data, size, number, label) \
2127 number = GST_READ_UINT16_BE (data); \
2128 if (!(number & 0xc000)) { \
2131 number = GST_READ_UINT32_BE (data); \
2141 static GstFlowReturn
2142 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2143 GstBuffer * in, guint offset, guint16 version,
2144 GstClockTime timestamp, gboolean key)
2147 const guint8 *data, *base;
2150 base = GST_BUFFER_DATA (in);
2151 data = base + offset;
2152 size = GST_BUFFER_SIZE (in) - offset;
2153 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2154 * was previously for that given stream. */
2155 ret = stream->last_flow;
2161 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2162 guint fragment_size;
2163 GstBuffer *fragment;
2165 pkg_header = *data++;
2169 * bit 7: 1=last block in block chain
2170 * bit 6: 1=short header (only one block?)
2172 if ((pkg_header & 0xc0) == 0x40) {
2173 /* skip unknown byte */
2179 if ((pkg_header & 0x40) == 0) {
2180 pkg_subseq = (*data++) & 0x7f;
2187 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2190 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2194 goto not_enough_data;
2196 pkg_seqnum = *data++;
2200 GST_DEBUG_OBJECT (rmdemux,
2201 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2202 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2204 /* calc size of fragment */
2205 if ((pkg_header & 0xc0) == 0x80) {
2206 fragment_size = pkg_offset;
2208 if ((pkg_header & 0xc0) == 0)
2209 fragment_size = size;
2211 fragment_size = pkg_length;
2213 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2215 /* get the fragment */
2216 fragment = gst_buffer_create_sub (in, data - base, fragment_size);
2218 if (pkg_subseq == 1) {
2219 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2220 gst_adapter_clear (stream->adapter);
2221 stream->frag_current = 0;
2222 stream->frag_count = 0;
2223 stream->frag_length = pkg_length;
2224 } else if (pkg_subseq == 0) {
2225 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2226 stream->frag_current = 0;
2227 stream->frag_count = 0;
2228 stream->frag_length = fragment_size;
2231 /* put fragment in adapter */
2232 gst_adapter_push (stream->adapter, fragment);
2233 stream->frag_offset[stream->frag_count] = stream->frag_current;
2234 stream->frag_current += fragment_size;
2235 stream->frag_count++;
2237 if (stream->frag_count > MAX_FRAGS)
2238 goto too_many_fragments;
2240 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2241 stream->frag_current, stream->frag_length);
2243 /* flush fragment when complete */
2244 if (stream->frag_current >= stream->frag_length) {
2250 /* calculate header size, which is:
2251 * 1 byte for the number of fragments - 1
2252 * for each fragment:
2253 * 4 bytes 0x00000001 little endian
2254 * 4 bytes fragment offset
2256 * This is also the matroska header for realvideo, the decoder needs the
2257 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2258 * in front of the data.
2260 header_size = 1 + (8 * (stream->frag_count));
2262 GST_DEBUG_OBJECT (rmdemux,
2263 "fragmented completed. count %d, header_size %u", stream->frag_count,
2266 avail = gst_adapter_available (stream->adapter);
2268 out = gst_buffer_new_and_alloc (header_size + avail);
2269 outdata = GST_BUFFER_DATA (out);
2272 *outdata++ = stream->frag_count - 1;
2273 for (i = 0; i < stream->frag_count; i++) {
2274 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2276 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2280 /* copy packet data after the header now */
2281 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2282 gst_adapter_flush (stream->adapter, avail);
2284 stream->frag_current = 0;
2285 stream->frag_count = 0;
2286 stream->frag_length = 0;
2288 gst_buffer_set_caps (out, GST_PAD_CAPS (stream->pad));
2290 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2292 if (timestamp > rmdemux->first_ts)
2293 timestamp -= rmdemux->first_ts;
2297 GST_BUFFER_TIMESTAMP (out) = timestamp;
2299 ret = gst_pad_push (stream->pad, out);
2300 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2301 if (ret != GST_FLOW_OK)
2304 timestamp = GST_CLOCK_TIME_NONE;
2306 data += fragment_size;
2307 size -= fragment_size;
2309 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2311 gst_buffer_unref (in);
2318 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2320 gst_buffer_unref (in);
2325 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2326 ("Got more fragments (%u) than can be handled (%u)",
2327 stream->frag_count, MAX_FRAGS), (NULL));
2328 gst_buffer_unref (in);
2329 return GST_FLOW_ERROR;
2333 static GstFlowReturn
2334 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2335 GstBuffer * in, guint offset, guint16 version,
2336 GstClockTime timestamp, gboolean key)
2338 GstFlowReturn ret, cret;
2343 data = GST_BUFFER_DATA (in) + offset;
2344 size = GST_BUFFER_SIZE (in) - offset;
2346 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
2347 GST_BUFFER_OFFSET_NONE, size, GST_PAD_CAPS (stream->pad), &buffer);
2349 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2350 if (ret != GST_FLOW_OK)
2353 memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, size);
2355 if (timestamp > rmdemux->first_ts)
2356 timestamp -= rmdemux->first_ts;
2360 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2362 if (stream->needs_descrambling) {
2363 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2365 GST_LOG_OBJECT (rmdemux, "Pushing buffer of size %d to pad %s",
2366 GST_BUFFER_SIZE (buffer), GST_PAD_NAME (stream->pad));
2368 ret = gst_pad_push (stream->pad, buffer);
2375 GST_DEBUG_OBJECT (rmdemux, "pad alloc returned %d", ret);
2380 static GstFlowReturn
2381 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2384 GstRMDemuxStream *stream;
2386 GstFlowReturn cret, ret;
2387 GstClockTime timestamp;
2389 guint8 *data, *base;
2393 base = data = GST_BUFFER_DATA (in);
2394 size = GST_BUFFER_SIZE (in);
2397 id = RMDEMUX_GUINT16_GET (data);
2399 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2400 if (!stream || !stream->pad)
2401 goto unknown_stream;
2403 /* timestamp in Msec */
2404 ts = RMDEMUX_GUINT32_GET (data + 2);
2405 timestamp = ts * GST_MSECOND;
2407 gst_segment_set_last_stop (&rmdemux->segment, GST_FORMAT_TIME, timestamp);
2409 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2410 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2411 GST_TIME_ARGS (timestamp), size, version, ts);
2413 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2414 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2415 GST_TIME_ARGS (timestamp));
2416 rmdemux->first_ts = timestamp;
2419 /* skip stream_id and timestamp */
2423 /* skip other stuff */
2425 /* uint8 packet_group */
2427 flags = GST_READ_UINT8 (data + 1);
2431 /* uint16 asm_rule */
2432 /* uint8 asm_flags */
2433 flags = GST_READ_UINT8 (data + 2);
2437 key = (flags & 0x02) != 0;
2438 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2440 if (rmdemux->need_newsegment) {
2443 event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
2444 rmdemux->segment.format, rmdemux->segment.start,
2445 rmdemux->segment.stop, rmdemux->segment.time);
2447 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2448 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2450 gst_rmdemux_send_event (rmdemux, event);
2451 rmdemux->need_newsegment = FALSE;
2454 if (stream->pending_tags != NULL) {
2455 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2456 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (rmdemux), stream->pad,
2457 stream->pending_tags);
2458 stream->pending_tags = NULL;
2461 if ((rmdemux->offset + size) <= stream->seek_offset) {
2462 GST_DEBUG_OBJECT (rmdemux,
2463 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2464 stream->id, stream->seek_offset, rmdemux->offset, size);
2469 /* do special headers */
2470 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2472 gst_rmdemux_parse_video_packet (rmdemux, stream, in, data - base,
2473 version, timestamp, key);
2474 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2476 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, data - base,
2477 version, timestamp, key);
2481 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2489 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2496 gst_rmdemux_plugin_init (GstPlugin * plugin)
2498 return gst_element_register (plugin, "rmdemux",
2499 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX) &&
2500 gst_element_register (plugin, "rademux",
2501 GST_RANK_SECONDARY, GST_TYPE_REAL_AUDIO_DEMUX);
2506 plugin_init (GstPlugin * plugin)
2508 if (!gst_rmdemux_plugin_init (plugin))
2511 if (!gst_rdt_depay_plugin_init (plugin))
2514 if (!gst_rdt_manager_plugin_init (plugin))
2517 if (!gst_rtsp_real_plugin_init (plugin))
2523 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
2526 "RealMedia demuxer and depayloader",
2527 plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);