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 gst_event_ref (event);
1259 gst_pad_push_event (stream->pad, event);
1261 gst_event_unref (event);
1265 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1267 GstCaps *stream_caps = NULL;
1268 const gchar *codec_tag = NULL;
1269 const gchar *codec_name = NULL;
1272 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1273 char *name = g_strdup_printf ("video_%02d", rmdemux->n_video_streams);
1276 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1279 codec_tag = GST_TAG_VIDEO_CODEC;
1281 switch (stream->fourcc) {
1282 case GST_RM_VDO_RV10:
1283 codec_name = "Real Video 1.0";
1286 case GST_RM_VDO_RV20:
1287 codec_name = "Real Video 2.0";
1290 case GST_RM_VDO_RV30:
1291 codec_name = "Real Video 3.0";
1294 case GST_RM_VDO_RV40:
1295 codec_name = "Real Video 4.0";
1299 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1300 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1301 GST_WARNING_OBJECT (rmdemux,
1302 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1303 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1308 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1310 "format", G_TYPE_INT,
1311 (int) stream->format,
1312 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1316 gst_caps_set_simple (stream_caps,
1317 "width", G_TYPE_INT, stream->width,
1318 "height", G_TYPE_INT, stream->height,
1319 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1320 stream->framerate_denominator, NULL);
1322 rmdemux->n_video_streams++;
1324 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1325 char *name = g_strdup_printf ("audio_%02d", rmdemux->n_audio_streams);
1328 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1329 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1332 codec_tag = GST_TAG_AUDIO_CODEC;
1334 switch (stream->fourcc) {
1335 /* Older RealAudio Codecs */
1336 case GST_RM_AUD_14_4:
1337 codec_name = "Real Audio 14.4kbps";
1341 case GST_RM_AUD_28_8:
1342 codec_name = "Real Audio 28.8kbps";
1346 /* DolbyNet (Dolby AC3, low bitrate) */
1347 case GST_RM_AUD_DNET:
1348 codec_name = "AC-3 audio";
1350 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1351 (int) stream->rate, NULL);
1352 stream->needs_descrambling = TRUE;
1353 stream->subpackets_needed = 1;
1354 stream->subpackets = NULL;
1357 /* RealAudio 10 (AAC) */
1358 case GST_RM_AUD_RAAC:
1359 codec_name = "Real Audio 10 (AAC)";
1364 case GST_RM_AUD_RACP:
1365 /* FIXME: codec_name = */
1367 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1372 case GST_RM_AUD_ATRC:
1373 codec_name = "Sony ATRAC3";
1374 stream_caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
1377 /* RealAudio G2 audio */
1378 case GST_RM_AUD_COOK:
1379 codec_name = "Real Audio G2 (Cook)";
1381 stream->needs_descrambling = TRUE;
1382 stream->subpackets_needed = stream->height;
1383 stream->subpackets = NULL;
1386 /* RALF is lossless */
1387 case GST_RM_AUD_RALF:
1388 /* FIXME: codec_name = */
1389 GST_DEBUG_OBJECT (rmdemux, "RALF");
1390 stream_caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
1393 /* Sipro/ACELP.NET Voice Codec (MIME unknown) */
1394 case GST_RM_AUD_SIPR:
1395 /* FIXME: codec_name = */
1396 stream_caps = gst_caps_new_simple ("audio/x-sipro", NULL);
1400 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1401 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1402 GST_WARNING_OBJECT (rmdemux,
1403 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1404 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1410 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1411 (int) version, NULL);
1415 gst_caps_set_simple (stream_caps,
1416 "flavor", G_TYPE_INT, (int) stream->flavor,
1417 "rate", G_TYPE_INT, (int) stream->rate,
1418 "channels", G_TYPE_INT, (int) stream->n_channels,
1419 "width", G_TYPE_INT, (int) stream->sample_width,
1420 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1421 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1422 "height", G_TYPE_INT, (int) stream->height, NULL);
1424 rmdemux->n_audio_streams++;
1426 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1432 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1433 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1434 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1435 g_slist_length (rmdemux->streams));
1437 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1440 if (stream->pad && stream_caps) {
1442 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1443 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1445 /* add codec_data if there is any */
1446 if (stream->extra_data_size > 0) {
1449 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1450 memcpy (GST_BUFFER_DATA (buffer), stream->extra_data,
1451 stream->extra_data_size);
1453 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1456 gst_buffer_unref (buffer);
1459 gst_pad_use_fixed_caps (stream->pad);
1461 gst_pad_set_caps (stream->pad, stream_caps);
1462 gst_pad_set_event_function (stream->pad,
1463 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1464 gst_pad_set_query_type_function (stream->pad,
1465 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query_types));
1466 gst_pad_set_query_function (stream->pad,
1467 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1469 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1470 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1471 gst_pad_set_active (stream->pad, TRUE);
1472 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1474 /* save for later, we must send the tags after the newsegment event */
1475 if (codec_name != NULL && codec_tag != NULL) {
1476 stream->pending_tags = gst_tag_list_new ();
1477 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1478 codec_tag, codec_name, NULL);
1485 gst_caps_unref (stream_caps);
1489 re_skip_pascal_string (const guint8 * ptr)
1499 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1501 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1502 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1506 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1508 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1509 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1510 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1511 RMDEMUX_GUINT32_GET (data + 8));
1512 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1513 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1514 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1515 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1517 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1518 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1520 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1521 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1522 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1523 rmdemux->index_offset);
1524 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1525 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1526 rmdemux->data_offset);
1527 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1528 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1532 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1534 GstRMDemuxStream *stream;
1535 char *stream1_type_string;
1536 char *stream2_type_string;
1541 stream = g_new0 (GstRMDemuxStream, 1);
1543 stream->id = RMDEMUX_GUINT16_GET (data);
1544 stream->index = NULL;
1545 stream->seek_offset = 0;
1546 stream->last_ts = -1;
1547 stream->next_ts = -1;
1548 stream->last_flow = GST_FLOW_OK;
1549 stream->adapter = gst_adapter_new ();
1550 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1553 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1554 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1555 length - offset, &str_len);
1557 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1558 length - offset, &str_len);
1561 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1563 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1564 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1566 * so, we should not rely on it to know which stream type it is
1569 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1570 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1572 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1573 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1574 } else if (strcmp (stream2_type_string,
1575 "video/x-pn-multirate-realvideo") == 0) {
1576 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1577 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1578 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1579 } else if (strcmp (stream2_type_string,
1580 "audio/x-pn-multirate-realaudio") == 0) {
1581 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1582 } else if (strcmp (stream2_type_string,
1583 "audio/x-pn-multirate-realaudio-live") == 0) {
1584 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1585 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1586 /* Another audio type found in the real testsuite */
1587 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1588 } else if (strcmp (stream1_type_string, "") == 0 &&
1589 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1590 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1592 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1593 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1594 stream1_type_string, stream2_type_string);
1596 g_free (stream1_type_string);
1597 g_free (stream2_type_string);
1601 stream->subtype = stream_type;
1602 switch (stream_type) {
1604 case GST_RMDEMUX_STREAM_VIDEO:
1605 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1606 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1607 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1608 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1609 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1610 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1611 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1612 stream->extra_data_size = length - (offset + 26);
1613 stream->extra_data = (guint8 *) data + offset + 26;
1614 /* Natural way to represent framerates here requires unsigned 32 bit
1615 * numerator, which we don't have. For the nasty case, approximate...
1618 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1619 RMDEMUX_GUINT16_GET (data + offset + 24);
1620 if (numerator > G_MAXINT) {
1621 stream->framerate_numerator = (gint) (numerator >> 1);
1622 stream->framerate_denominator = 32768;
1624 stream->framerate_numerator = (gint) numerator;
1625 stream->framerate_denominator = 65536;
1629 GST_DEBUG_OBJECT (rmdemux,
1630 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1631 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1632 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1633 stream->rate, stream->framerate_numerator,
1634 stream->framerate_denominator, stream->subformat, stream->format,
1635 stream->extra_data_size);
1637 case GST_RMDEMUX_STREAM_AUDIO:{
1638 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1639 GST_INFO ("stream version = %u", stream->version);
1640 switch (stream->version) {
1642 stream->fourcc = GST_RM_AUD_14_4;
1643 stream->packet_size = 20;
1644 stream->rate = 8000;
1645 stream->n_channels = 1;
1646 stream->sample_width = 16;
1648 stream->leaf_size = 0;
1652 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1653 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1654 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1655 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1656 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1657 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1658 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1659 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1660 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1661 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1662 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1663 stream->extra_data_size);
1664 if (length - (offset + 73) >= stream->extra_data_size) {
1665 stream->extra_data = (guint8 *) data + offset + 73;
1667 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1668 stream->extra_data_size = 0;
1672 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1673 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1674 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1675 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1676 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1677 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1678 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1679 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1680 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1681 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1682 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1683 stream->extra_data_size);
1684 if (length - (offset + 78) >= stream->extra_data_size) {
1685 stream->extra_data = (guint8 *) data + offset + 78;
1687 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1688 stream->extra_data_size = 0;
1692 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1698 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1699 GST_DEBUG_OBJECT (rmdemux,
1700 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1701 stream->rate, stream->sample_width, stream->n_channels);
1705 case GST_RMDEMUX_STREAM_FILEINFO:
1709 /* Length of this section */
1710 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1711 RMDEMUX_GUINT32_GET (data + offset));
1714 /* Unknown : 00 00 00 00 */
1717 /* Number of variables that would follow (loop iterations) */
1718 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1721 while (element_nb) {
1722 /* Category Id : 00 00 00 XX 00 00 */
1726 offset += re_skip_pascal_string (data + offset);
1728 /* Variable Value Type */
1729 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1730 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1733 /* Variable Value */
1734 offset += re_skip_pascal_string (data + offset);
1740 case GST_RMDEMUX_STREAM_UNKNOWN:
1745 gst_rmdemux_add_stream (rmdemux, stream);
1749 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1754 n = RMDEMUX_GUINT32_GET (data);
1755 id = RMDEMUX_GUINT16_GET (data + 4);
1756 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1758 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1761 /* Point to the next index_stream */
1762 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1764 /* Return the length of the index */
1769 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1774 GstRMDemuxIndex *index;
1776 /* The number of index records */
1779 if (rmdemux->index_stream == NULL)
1782 /* don't parse the index a second time when operating pull-based and
1783 * reaching the end of the file */
1784 if (rmdemux->index_stream->index_length > 0) {
1785 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1789 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1790 rmdemux->index_stream->index = index;
1791 rmdemux->index_stream->index_length = n;
1793 for (i = 0; i < n; i++) {
1794 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1795 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1797 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1798 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1805 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1807 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1808 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1809 rmdemux->chunk_index = 0;
1810 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1811 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1815 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1819 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1821 gst_element_found_tags (GST_ELEMENT (rmdemux), tags);
1825 static GstFlowReturn
1826 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1831 /* store the value */
1832 stream->last_flow = ret;
1834 /* if it's success we can return the value right away */
1835 if (GST_FLOW_IS_SUCCESS (ret))
1838 /* any other error that is not-linked can be returned right
1840 if (ret != GST_FLOW_NOT_LINKED)
1843 for (cur = rmdemux->streams; cur; cur = cur->next) {
1844 GstRMDemuxStream *ostream = cur->data;
1846 ret = ostream->last_flow;
1847 /* some other return value (must be SUCCESS but we can return
1848 * other values as well) */
1849 if (ret != GST_FLOW_NOT_LINKED)
1852 /* if we get here, all other pads were unlinked and we return
1853 * NOT_LINKED then */
1859 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1860 GstRMDemuxStream * stream)
1862 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1865 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1866 stream->subpackets->len);
1867 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1868 g_ptr_array_set_size (stream->subpackets, 0);
1871 static GstFlowReturn
1872 gst_rmdemux_descramble_cook_audio (GstRMDemux * rmdemux,
1873 GstRMDemuxStream * stream)
1877 guint packet_size = stream->packet_size;
1878 guint height = stream->subpackets->len;
1879 guint leaf_size = stream->leaf_size;
1882 g_assert (stream->height == height);
1884 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1887 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
1888 GST_BUFFER_OFFSET_NONE, height * packet_size,
1889 GST_PAD_CAPS (stream->pad), &outbuf);
1891 if (ret != GST_FLOW_OK)
1894 for (p = 0; p < height; ++p) {
1895 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1896 guint8 *b_data = GST_BUFFER_DATA (b);
1899 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1901 for (x = 0; x < packet_size / leaf_size; ++x) {
1904 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1905 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1906 memcpy (GST_BUFFER_DATA (outbuf) + leaf_size * idx, b_data, leaf_size);
1907 b_data += leaf_size;
1911 /* some decoders, such as realaudiodec, need to be fed in packet units */
1912 for (p = 0; p < height; ++p) {
1915 subbuf = gst_buffer_create_sub (outbuf, p * packet_size, packet_size);
1916 gst_buffer_set_caps (subbuf, GST_PAD_CAPS (stream->pad));
1917 ret = gst_pad_push (stream->pad, subbuf);
1918 if (ret != GST_FLOW_OK)
1922 gst_buffer_unref (outbuf);
1926 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1931 static GstFlowReturn
1932 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1933 GstRMDemuxStream * stream)
1937 buf = g_ptr_array_index (stream->subpackets, 0);
1938 g_ptr_array_index (stream->subpackets, 0) = NULL;
1939 g_ptr_array_set_size (stream->subpackets, 0);
1941 buf = gst_rm_utils_descramble_dnet_buffer (buf);
1942 return gst_pad_push (stream->pad, buf);
1945 static GstFlowReturn
1946 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
1947 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
1951 if (stream->subpackets == NULL)
1952 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
1954 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
1955 stream->subpackets_needed, GST_BUFFER_SIZE (buf), keyframe);
1957 if (keyframe && stream->subpackets->len > 0) {
1958 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1961 g_ptr_array_add (stream->subpackets, buf);
1963 if (stream->subpackets->len < stream->subpackets_needed)
1966 g_assert (stream->subpackets->len >= 1);
1968 switch (stream->fourcc) {
1969 case GST_RM_AUD_DNET:
1970 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
1972 case GST_RM_AUD_COOK:
1973 ret = gst_rmdemux_descramble_cook_audio (rmdemux, stream);
1976 g_assert_not_reached ();
1983 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1984 guint8 * data, GstClockTime timestamp)
1988 GstClockTime ts = timestamp;
1990 if (timestamp == GST_CLOCK_TIME_NONE)
1993 /* only adjust when we have a stream with B frames */
1994 if (stream->format < 0x20200002)
1997 /* Fix timestamp. */
1998 switch (stream->fourcc) {
1999 case GST_RM_VDO_RV10:
2001 case GST_RM_VDO_RV20:
2004 * Bit 1- 2: frame type
2006 * Bit 10-22: sequence number
2009 frame_type = (data[0] >> 6) & 0x03;
2010 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2013 case GST_RM_VDO_RV30:
2017 * Bit 3: skip packet if 1
2018 * Bit 4- 5: frame type
2020 * Bit 13-25: sequence number
2023 frame_type = (data[0] >> 3) & 0x03;
2024 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2027 case GST_RM_VDO_RV40:
2030 * Bit 1: skip packet if 1
2031 * Bit 2- 3: frame type
2033 * Bit 14-26: sequence number
2036 frame_type = (data[0] >> 5) & 0x03;
2037 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2041 goto unknown_version;
2044 switch (frame_type) {
2048 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2050 if (stream->next_ts == -1)
2051 stream->next_ts = timestamp;
2053 timestamp = stream->next_ts;
2054 stream->last_ts = stream->next_ts;
2055 stream->next_ts = ts;
2056 stream->last_seq = stream->next_seq;
2057 stream->next_seq = seq;
2062 GST_LOG_OBJECT (rmdemux, "P frame");
2064 timestamp = stream->last_ts = stream->next_ts;
2065 if (seq < stream->next_seq)
2066 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2068 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2069 stream->last_seq = stream->next_seq;
2070 stream->next_seq = seq;
2075 GST_LOG_OBJECT (rmdemux, "B frame");
2077 if (seq < stream->last_seq) {
2079 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2081 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2086 goto unknown_frame_type;
2090 GST_LOG_OBJECT (rmdemux,
2091 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2092 GST_TIME_ARGS (timestamp));
2099 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2100 ("Unknown version: %i.", stream->version), (NULL));
2101 return GST_FLOW_ERROR;
2106 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2107 frame_type), (NULL));
2108 return GST_FLOW_ERROR;
2112 #define PARSE_NUMBER(data, size, number, label) \
2116 number = GST_READ_UINT16_BE (data); \
2117 if (!(number & 0xc000)) { \
2120 number = GST_READ_UINT32_BE (data); \
2130 static GstFlowReturn
2131 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2132 GstBuffer * in, guint offset, guint16 version,
2133 GstClockTime timestamp, gboolean key)
2136 const guint8 *data, *base;
2139 base = GST_BUFFER_DATA (in);
2140 data = base + offset;
2141 size = GST_BUFFER_SIZE (in) - offset;
2142 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2143 * was previously for that given stream. */
2144 ret = stream->last_flow;
2150 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2151 guint fragment_size;
2152 GstBuffer *fragment;
2154 pkg_header = *data++;
2158 * bit 7: 1=last block in block chain
2159 * bit 6: 1=short header (only one block?)
2161 if ((pkg_header & 0xc0) == 0x40) {
2162 /* skip unknown byte */
2168 if ((pkg_header & 0x40) == 0) {
2169 pkg_subseq = (*data++) & 0x7f;
2176 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2179 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2183 goto not_enough_data;
2185 pkg_seqnum = *data++;
2189 GST_DEBUG_OBJECT (rmdemux,
2190 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2191 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2193 /* calc size of fragment */
2194 if ((pkg_header & 0xc0) == 0x80) {
2195 fragment_size = pkg_offset;
2197 if ((pkg_header & 0xc0) == 0)
2198 fragment_size = size;
2200 fragment_size = pkg_length;
2202 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2204 /* get the fragment */
2205 fragment = gst_buffer_create_sub (in, data - base, fragment_size);
2207 if (pkg_subseq == 1) {
2208 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2209 gst_adapter_clear (stream->adapter);
2210 stream->frag_current = 0;
2211 stream->frag_count = 0;
2212 stream->frag_length = pkg_length;
2213 } else if (pkg_subseq == 0) {
2214 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2215 stream->frag_current = 0;
2216 stream->frag_count = 0;
2217 stream->frag_length = fragment_size;
2220 /* put fragment in adapter */
2221 gst_adapter_push (stream->adapter, fragment);
2222 stream->frag_offset[stream->frag_count] = stream->frag_current;
2223 stream->frag_current += fragment_size;
2224 stream->frag_count++;
2226 if (stream->frag_count > MAX_FRAGS)
2227 goto too_many_fragments;
2229 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2230 stream->frag_current, stream->frag_length);
2232 /* flush fragment when complete */
2233 if (stream->frag_current >= stream->frag_length) {
2239 /* calculate header size, which is:
2240 * 1 byte for the number of fragments - 1
2241 * for each fragment:
2242 * 4 bytes 0x00000001 little endian
2243 * 4 bytes fragment offset
2245 * This is also the matroska header for realvideo, the decoder needs the
2246 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2247 * in front of the data.
2249 header_size = 1 + (8 * (stream->frag_count));
2251 GST_DEBUG_OBJECT (rmdemux,
2252 "fragmented completed. count %d, header_size %u", stream->frag_count,
2255 avail = gst_adapter_available (stream->adapter);
2257 out = gst_buffer_new_and_alloc (header_size + avail);
2258 outdata = GST_BUFFER_DATA (out);
2261 *outdata++ = stream->frag_count - 1;
2262 for (i = 0; i < stream->frag_count; i++) {
2263 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2265 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2269 /* copy packet data after the header now */
2270 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2271 gst_adapter_flush (stream->adapter, avail);
2273 stream->frag_current = 0;
2274 stream->frag_count = 0;
2275 stream->frag_length = 0;
2277 gst_buffer_set_caps (out, GST_PAD_CAPS (stream->pad));
2279 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2281 if (timestamp > rmdemux->first_ts)
2282 timestamp -= rmdemux->first_ts;
2286 GST_BUFFER_TIMESTAMP (out) = timestamp;
2288 ret = gst_pad_push (stream->pad, out);
2289 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2290 if (ret != GST_FLOW_OK)
2293 timestamp = GST_CLOCK_TIME_NONE;
2295 data += fragment_size;
2296 size -= fragment_size;
2298 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2300 gst_buffer_unref (in);
2307 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2309 gst_buffer_unref (in);
2314 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2315 ("Got more fragments (%u) than can be handled (%u)",
2316 stream->frag_count, MAX_FRAGS), (NULL));
2317 gst_buffer_unref (in);
2318 return GST_FLOW_ERROR;
2322 static GstFlowReturn
2323 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2324 GstBuffer * in, guint offset, guint16 version,
2325 GstClockTime timestamp, gboolean key)
2327 GstFlowReturn ret, cret;
2332 data = GST_BUFFER_DATA (in) + offset;
2333 size = GST_BUFFER_SIZE (in) - offset;
2335 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
2336 GST_BUFFER_OFFSET_NONE, size, GST_PAD_CAPS (stream->pad), &buffer);
2338 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2339 if (ret != GST_FLOW_OK)
2342 memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, size);
2344 if (timestamp > rmdemux->first_ts)
2345 timestamp -= rmdemux->first_ts;
2349 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2351 if (stream->needs_descrambling) {
2352 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2354 GST_LOG_OBJECT (rmdemux, "Pushing buffer of size %d to pad %s",
2355 GST_BUFFER_SIZE (buffer), GST_PAD_NAME (stream->pad));
2357 ret = gst_pad_push (stream->pad, buffer);
2364 GST_DEBUG_OBJECT (rmdemux, "pad alloc returned %d", ret);
2369 static GstFlowReturn
2370 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2373 GstRMDemuxStream *stream;
2375 GstFlowReturn cret, ret;
2376 GstClockTime timestamp;
2378 guint8 *data, *base;
2382 base = data = GST_BUFFER_DATA (in);
2383 size = GST_BUFFER_SIZE (in);
2386 id = RMDEMUX_GUINT16_GET (data);
2388 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2389 if (!stream || !stream->pad)
2390 goto unknown_stream;
2392 /* timestamp in Msec */
2393 ts = RMDEMUX_GUINT32_GET (data + 2);
2394 timestamp = ts * GST_MSECOND;
2396 gst_segment_set_last_stop (&rmdemux->segment, GST_FORMAT_TIME, timestamp);
2398 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2399 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2400 GST_TIME_ARGS (timestamp), size, version, ts);
2402 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2403 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2404 GST_TIME_ARGS (timestamp));
2405 rmdemux->first_ts = timestamp;
2408 /* skip stream_id and timestamp */
2412 /* skip other stuff */
2414 /* uint8 packet_group */
2416 flags = GST_READ_UINT8 (data + 1);
2420 /* uint16 asm_rule */
2421 /* uint8 asm_flags */
2422 flags = GST_READ_UINT8 (data + 2);
2426 key = (flags & 0x02) != 0;
2427 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2429 if (rmdemux->need_newsegment) {
2432 event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
2433 rmdemux->segment.format, rmdemux->segment.start,
2434 rmdemux->segment.stop, rmdemux->segment.time);
2436 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2437 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2439 gst_rmdemux_send_event (rmdemux, event);
2440 rmdemux->need_newsegment = FALSE;
2443 if (stream->pending_tags != NULL) {
2444 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2445 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (rmdemux), stream->pad,
2446 stream->pending_tags);
2447 stream->pending_tags = NULL;
2450 if ((rmdemux->offset + size) <= stream->seek_offset) {
2451 GST_DEBUG_OBJECT (rmdemux,
2452 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2453 stream->id, stream->seek_offset, rmdemux->offset, size);
2458 /* do special headers */
2459 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2461 gst_rmdemux_parse_video_packet (rmdemux, stream, in, data - base,
2462 version, timestamp, key);
2463 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2465 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, data - base,
2466 version, timestamp, key);
2470 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2478 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2485 gst_rmdemux_plugin_init (GstPlugin * plugin)
2487 return gst_element_register (plugin, "rmdemux",
2488 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX) &&
2489 gst_element_register (plugin, "rademux",
2490 GST_RANK_SECONDARY, GST_TYPE_REAL_AUDIO_DEMUX);
2495 plugin_init (GstPlugin * plugin)
2497 if (!gst_rmdemux_plugin_init (plugin))
2500 if (!gst_rdt_depay_plugin_init (plugin))
2503 if (!gst_rdt_manager_plugin_init (plugin))
2506 if (!gst_rtsp_real_plugin_init (plugin))
2512 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
2515 "RealMedia demuxer and depayloader",
2516 plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);