1 /* GStreamer RealMedia demuxer
2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2003> David A. Schleef <ds@schleef.org>
4 * Copyright (C) <2004> Stephane Loeuillet <gstreamer@leroutier.net>
5 * Copyright (C) <2005> Owen Fraser-Green <owen@discobabe.net>
6 * Copyright (C) <2005> Michael Smith <fluendo.com>
7 * Copyright (C) <2006> Wim Taymans <wim@fluendo.com>
8 * Copyright (C) <2006> Tim-Philipp Müller <tim centricular net>
9 * Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Library General Public
13 * License as published by the Free Software Foundation; either
14 * version 2 of the License, or (at your option) any later version.
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Library General Public License for more details.
21 * You should have received a copy of the GNU Library General Public
22 * License along with this library; if not, write to the
23 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 * Boston, MA 02111-1307, USA.
37 #define RMDEMUX_GUINT32_GET(a) GST_READ_UINT32_BE(a)
38 #define RMDEMUX_GUINT16_GET(a) GST_READ_UINT16_BE(a)
39 #define RMDEMUX_FOURCC_GET(a) GST_READ_UINT32_LE(a)
40 #define HEADER_SIZE 10
45 static const guint8 sipr_subpk_size[4] = { 29, 19, 37, 20 };
47 typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
49 struct _GstRMDemuxStream
58 GstFlowReturn last_flow;
63 GstRMDemuxIndex *index;
65 gint framerate_numerator;
66 gint framerate_denominator;
72 guint16 rate; /* samplerate */
73 guint16 n_channels; /* channels */
74 guint16 sample_width; /* bits_per_sample */
75 guint16 leaf_size; /* subpacket_size */
76 guint32 packet_size; /* coded_frame_size */
78 guint32 extra_data_size; /* codec_data_length */
79 guint8 *extra_data; /* extras */
82 gboolean needs_descrambling;
83 guint subpackets_needed; /* subpackets needed for descrambling */
84 GPtrArray *subpackets; /* array containing subpacket GstBuffers */
86 /* Variables needed for fixing timestamps. */
87 GstClockTime next_ts, last_ts;
88 guint16 next_seq, last_seq;
95 guint frag_offset[MAX_FRAGS];
98 GstTagList *pending_tags;
101 struct _GstRMDemuxIndex
104 GstClockTime timestamp;
107 static GstStaticPadTemplate gst_rmdemux_sink_template =
108 GST_STATIC_PAD_TEMPLATE ("sink",
111 GST_STATIC_CAPS ("application/vnd.rn-realmedia")
114 static GstStaticPadTemplate gst_rmdemux_videosrc_template =
115 GST_STATIC_PAD_TEMPLATE ("video_%u",
118 GST_STATIC_CAPS_ANY);
120 static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
121 GST_STATIC_PAD_TEMPLATE ("audio_%u",
124 GST_STATIC_CAPS_ANY);
126 GST_DEBUG_CATEGORY_STATIC (rmdemux_debug);
127 #define GST_CAT_DEFAULT rmdemux_debug
129 static GstElementClass *parent_class = NULL;
131 static void gst_rmdemux_class_init (GstRMDemuxClass * klass);
132 static void gst_rmdemux_base_init (GstRMDemuxClass * klass);
133 static void gst_rmdemux_init (GstRMDemux * rmdemux);
134 static void gst_rmdemux_finalize (GObject * object);
135 static GstStateChangeReturn gst_rmdemux_change_state (GstElement * element,
136 GstStateChange transition);
137 static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstObject * parent,
139 static void gst_rmdemux_loop (GstPad * pad);
140 static gboolean gst_rmdemux_sink_activate (GstPad * sinkpad,
142 static gboolean gst_rmdemux_sink_activate_mode (GstPad * sinkpad,
143 GstObject * parent, GstPadMode mode, gboolean active);
144 static gboolean gst_rmdemux_sink_event (GstPad * pad, GstObject * parent,
146 static gboolean gst_rmdemux_src_event (GstPad * pad, GstObject * parent,
148 static void gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event);
149 static gboolean gst_rmdemux_src_query (GstPad * pad, GstObject * parent,
151 static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux,
154 static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data,
156 static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data,
158 static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux,
159 const guint8 * data, int length);
160 static guint gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data,
162 static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data,
164 static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data,
166 static GstFlowReturn gst_rmdemux_parse_packet (GstRMDemux * rmdemux,
167 GstBuffer * in, guint16 version);
168 static void gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux,
169 const guint8 * data, int length);
170 static void gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
171 GstRMDemuxStream * stream);
172 static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
176 gst_rmdemux_get_type (void)
178 static GType rmdemux_type = 0;
181 static const GTypeInfo rmdemux_info = {
182 sizeof (GstRMDemuxClass),
183 (GBaseInitFunc) gst_rmdemux_base_init, NULL,
184 (GClassInitFunc) gst_rmdemux_class_init,
185 NULL, NULL, sizeof (GstRMDemux), 0,
186 (GInstanceInitFunc) gst_rmdemux_init,
190 g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
197 gst_rmdemux_base_init (GstRMDemuxClass * klass)
199 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
201 gst_element_class_add_pad_template (element_class,
202 gst_static_pad_template_get (&gst_rmdemux_sink_template));
203 gst_element_class_add_pad_template (element_class,
204 gst_static_pad_template_get (&gst_rmdemux_videosrc_template));
205 gst_element_class_add_pad_template (element_class,
206 gst_static_pad_template_get (&gst_rmdemux_audiosrc_template));
207 gst_element_class_set_details_simple (element_class, "RealMedia Demuxer",
209 "Demultiplex a RealMedia file into audio and video streams",
210 "David Schleef <ds@schleef.org>");
214 gst_rmdemux_class_init (GstRMDemuxClass * klass)
216 GObjectClass *gobject_class;
217 GstElementClass *gstelement_class;
219 gobject_class = (GObjectClass *) klass;
220 gstelement_class = (GstElementClass *) klass;
222 parent_class = g_type_class_peek_parent (klass);
224 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rmdemux_change_state);
226 GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
227 0, "Demuxer for Realmedia streams");
229 gobject_class->finalize = gst_rmdemux_finalize;
233 gst_rmdemux_finalize (GObject * object)
235 GstRMDemux *rmdemux = GST_RMDEMUX (object);
237 if (rmdemux->adapter) {
238 g_object_unref (rmdemux->adapter);
239 rmdemux->adapter = NULL;
242 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
246 gst_rmdemux_init (GstRMDemux * rmdemux)
249 gst_pad_new_from_static_template (&gst_rmdemux_sink_template, "sink");
250 gst_pad_set_event_function (rmdemux->sinkpad,
251 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_event));
252 gst_pad_set_chain_function (rmdemux->sinkpad,
253 GST_DEBUG_FUNCPTR (gst_rmdemux_chain));
254 gst_pad_set_activate_function (rmdemux->sinkpad,
255 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate));
256 gst_pad_set_activatemode_function (rmdemux->sinkpad,
257 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_mode));
259 gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
261 rmdemux->adapter = gst_adapter_new ();
262 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
263 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
264 rmdemux->need_newsegment = TRUE;
266 gst_rm_utils_run_tests ();
270 gst_rmdemux_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
274 switch (GST_EVENT_TYPE (event)) {
275 case GST_EVENT_SEGMENT:
276 gst_event_unref (event);
280 ret = gst_pad_event_default (pad, parent, event);
287 gst_rmdemux_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
291 GstRMDemux *rmdemux = GST_RMDEMUX (parent);
293 GST_LOG_OBJECT (rmdemux, "handling src event");
295 switch (GST_EVENT_TYPE (event)) {
300 GST_LOG_OBJECT (rmdemux, "Event on src: SEEK");
301 /* can't seek if we are not seekable, FIXME could pass the
302 * seek query upstream after converting it to bytes using
303 * the average bitrate of the stream. */
304 if (!rmdemux->seekable) {
306 GST_DEBUG ("seek on non seekable stream");
310 GST_OBJECT_LOCK (rmdemux);
311 /* check if we can do the seek now */
312 running = rmdemux->running;
313 GST_OBJECT_UNLOCK (rmdemux);
315 /* now do the seek */
317 ret = gst_rmdemux_perform_seek (rmdemux, event);
321 gst_event_unref (event);
325 GST_LOG_OBJECT (rmdemux, "Event on src: type=%d", GST_EVENT_TYPE (event));
326 ret = gst_pad_event_default (pad, parent, event);
333 GST_DEBUG ("error handling event");
334 gst_event_unref (event);
338 /* Validate that this looks like a reasonable point to seek to */
340 gst_rmdemux_validate_offset (GstRMDemux * rmdemux)
343 GstFlowReturn flowret;
344 guint16 version, length;
348 flowret = gst_pad_pull_range (rmdemux->sinkpad, rmdemux->offset, 4, &buffer);
350 if (flowret != GST_FLOW_OK) {
351 GST_DEBUG_OBJECT (rmdemux, "Failed to pull data at offset %d",
355 /* TODO: Can we also be seeking to a 'DATA' chunk header? Check this.
356 * Also, for the case we currently handle, can we check any more? It's pretty
357 * sucky to not be validating a little more heavily than this... */
358 /* This should now be the start of a data packet header. That begins with
359 * a 2-byte 'version' field, which has to be 0 or 1, then a length. I'm not
360 * certain what values are valid for length, but it must always be at least
361 * 4 bytes, and we can check that it won't take us past our known total size
364 data = gst_buffer_map (buffer, NULL, NULL, GST_MAP_READ);
365 version = RMDEMUX_GUINT16_GET (data);
366 if (version != 0 && version != 1) {
367 GST_DEBUG_OBJECT (rmdemux, "Expected version 0 or 1, got %d",
372 length = RMDEMUX_GUINT16_GET (data + 2);
373 /* TODO: Also check against total stream length */
375 GST_DEBUG_OBJECT (rmdemux, "Expected length >= 4, got %d", (int) length);
378 gst_buffer_unmap (buffer, data, -1);
381 rmdemux->offset += 4;
382 gst_adapter_clear (rmdemux->adapter);
383 gst_adapter_push (rmdemux->adapter, buffer);
385 GST_WARNING_OBJECT (rmdemux, "Failed to validate seek offset at %d",
387 gst_buffer_unref (buffer);
394 find_seek_offset_bytes (GstRMDemux * rmdemux, guint target)
398 gboolean ret = FALSE;
400 for (cur = rmdemux->streams; cur; cur = cur->next) {
401 GstRMDemuxStream *stream = cur->data;
403 /* Search backwards through this stream's index until we find the first
404 * timestamp before our target time */
405 for (i = stream->index_length - 1; i >= 0; i--) {
406 if (stream->index[i].offset <= target) {
407 /* Set the seek_offset for the stream so we don't bother parsing it
408 * until we've passed that point */
409 stream->seek_offset = stream->index[i].offset;
410 rmdemux->offset = stream->index[i].offset;
420 find_seek_offset_time (GstRMDemux * rmdemux, GstClockTime time)
423 gboolean ret = FALSE;
425 GstClockTime earliest = GST_CLOCK_TIME_NONE;
428 for (cur = rmdemux->streams; cur; cur = cur->next, n_stream++) {
429 GstRMDemuxStream *stream = cur->data;
431 /* Search backwards through this stream's index until we find the first
432 * timestamp before our target time */
433 for (i = stream->index_length - 1; i >= 0; i--) {
434 if (stream->index[i].timestamp <= time) {
435 /* Set the seek_offset for the stream so we don't bother parsing it
436 * until we've passed that point */
437 stream->seek_offset = stream->index[i].offset;
439 /* If it's also the earliest timestamp we've seen of all streams, then
442 if (earliest == GST_CLOCK_TIME_NONE ||
443 stream->index[i].timestamp < earliest) {
444 earliest = stream->index[i].timestamp;
445 rmdemux->offset = stream->index[i].offset;
446 GST_DEBUG_OBJECT (rmdemux,
447 "We're looking for %" GST_TIME_FORMAT
448 " and we found that stream %d has the latest index at %"
449 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start), n_stream,
450 GST_TIME_ARGS (earliest));
458 stream->discont = TRUE;
464 gst_rmdemux_perform_seek (GstRMDemux * rmdemux, GstEvent * event)
472 GstSeekType cur_type, stop_type;
477 GST_DEBUG_OBJECT (rmdemux, "seek with event");
479 gst_event_parse_seek (event, &rate, &format, &flags,
480 &cur_type, &cur, &stop_type, &stop);
482 /* we can only seek on time */
483 if (format != GST_FORMAT_TIME) {
484 GST_DEBUG_OBJECT (rmdemux, "can only seek on TIME");
487 /* cannot yet do backwards playback */
489 GST_DEBUG_OBJECT (rmdemux, "can only seek with positive rate, not %lf",
494 GST_DEBUG_OBJECT (rmdemux, "seek without event");
500 GST_DEBUG_OBJECT (rmdemux, "seek, rate %g", rate);
502 flush = flags & GST_SEEK_FLAG_FLUSH;
504 /* first step is to unlock the streaming thread if it is
505 * blocked in a chain call, we do this by starting the flush. */
507 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_start ());
508 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_start ());
510 gst_pad_pause_task (rmdemux->sinkpad);
513 GST_LOG_OBJECT (rmdemux, "Done starting flushes");
515 /* now grab the stream lock so that streaming cannot continue, for
516 * non flushing seeks when the element is in PAUSED this could block
518 GST_PAD_STREAM_LOCK (rmdemux->sinkpad);
520 GST_LOG_OBJECT (rmdemux, "Took streamlock");
523 gst_segment_do_seek (&rmdemux->segment, rate, format, flags,
524 cur_type, cur, stop_type, stop, &update);
527 GST_DEBUG_OBJECT (rmdemux, "segment positions set to %" GST_TIME_FORMAT "-%"
528 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start),
529 GST_TIME_ARGS (rmdemux->segment.stop));
531 /* we need to stop flushing on the sinkpad as we're going to use it
532 * next. We can do this as we have the STREAM lock now. */
533 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop (TRUE));
535 GST_LOG_OBJECT (rmdemux, "Pushed FLUSH_STOP event");
537 /* For each stream, find the first index offset equal to or before our seek
538 * target. Of these, find the smallest offset. That's where we seek to.
540 * Then we pull 4 bytes from that offset, and validate that we've seeked to a
541 * what looks like a plausible packet.
542 * If that fails, restart, with the seek target set to one less than the
543 * offset we just tried. If we run out of places to try, treat that as a fatal
546 if (!find_seek_offset_time (rmdemux, rmdemux->segment.position)) {
547 GST_LOG_OBJECT (rmdemux, "Failed to find seek offset by time");
552 GST_LOG_OBJECT (rmdemux, "Validating offset %u", rmdemux->offset);
553 validated = gst_rmdemux_validate_offset (rmdemux);
555 GST_INFO_OBJECT (rmdemux, "Failed to validate offset at %u",
557 if (!find_seek_offset_bytes (rmdemux, rmdemux->offset - 1)) {
561 validated = gst_rmdemux_validate_offset (rmdemux);
564 GST_LOG_OBJECT (rmdemux, "Found final offset. Excellent!");
566 /* now we have a new position, prepare for streaming again */
568 /* Reset the demuxer state */
569 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
572 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop (TRUE));
574 /* must send newsegment event from streaming thread, so just set flag */
575 rmdemux->need_newsegment = TRUE;
577 /* notify start of new segment */
578 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
579 gst_element_post_message (GST_ELEMENT_CAST (rmdemux),
580 gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
581 GST_FORMAT_TIME, rmdemux->segment.position));
584 /* restart our task since it might have been stopped when we did the
586 gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
591 /* streaming can continue now */
592 GST_PAD_STREAM_UNLOCK (rmdemux->sinkpad);
598 GST_DEBUG_OBJECT (rmdemux, "seek failed");
605 gst_rmdemux_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
607 gboolean res = FALSE;
610 rmdemux = GST_RMDEMUX (parent);
612 switch (GST_QUERY_TYPE (query)) {
613 case GST_QUERY_POSITION:
614 GST_DEBUG_OBJECT (rmdemux, "Position query: no idea from demuxer!");
616 case GST_QUERY_DURATION:{
619 gst_query_parse_duration (query, &fmt, NULL);
620 if (fmt == GST_FORMAT_TIME) {
621 GST_OBJECT_LOCK (rmdemux);
622 if (G_LIKELY (rmdemux->running)) {
623 gst_query_set_duration (query, GST_FORMAT_TIME, rmdemux->duration);
624 GST_DEBUG_OBJECT (rmdemux, "duration set to %" GST_TIME_FORMAT,
625 GST_TIME_ARGS (rmdemux->duration));
628 GST_OBJECT_UNLOCK (rmdemux);
632 case GST_QUERY_SEEKING:{
635 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
636 if (fmt == GST_FORMAT_TIME) {
637 GST_OBJECT_LOCK (rmdemux);
638 if (G_LIKELY (rmdemux->running)) {
639 gst_query_set_seeking (query, GST_FORMAT_TIME, rmdemux->seekable,
640 0, rmdemux->duration);
643 GST_OBJECT_UNLOCK (rmdemux);
648 res = gst_pad_query_default (pad, parent, query);
656 gst_rmdemux_reset (GstRMDemux * rmdemux)
660 GST_OBJECT_LOCK (rmdemux);
661 rmdemux->running = FALSE;
662 GST_OBJECT_UNLOCK (rmdemux);
664 for (cur = rmdemux->streams; cur; cur = cur->next) {
665 GstRMDemuxStream *stream = cur->data;
667 g_object_unref (stream->adapter);
668 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
669 gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
670 if (stream->pending_tags)
671 gst_tag_list_free (stream->pending_tags);
672 if (stream->subpackets)
673 g_ptr_array_free (stream->subpackets, TRUE);
674 g_free (stream->index);
677 g_slist_free (rmdemux->streams);
678 rmdemux->streams = NULL;
679 rmdemux->n_audio_streams = 0;
680 rmdemux->n_video_streams = 0;
682 if (rmdemux->pending_tags != NULL) {
683 gst_tag_list_free (rmdemux->pending_tags);
684 rmdemux->pending_tags = NULL;
687 gst_adapter_clear (rmdemux->adapter);
688 rmdemux->state = RMDEMUX_STATE_HEADER;
689 rmdemux->have_pads = FALSE;
691 gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
692 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
693 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
694 rmdemux->need_newsegment = TRUE;
697 static GstStateChangeReturn
698 gst_rmdemux_change_state (GstElement * element, GstStateChange transition)
700 GstRMDemux *rmdemux = GST_RMDEMUX (element);
701 GstStateChangeReturn res;
703 switch (transition) {
704 case GST_STATE_CHANGE_NULL_TO_READY:
706 case GST_STATE_CHANGE_READY_TO_PAUSED:
707 rmdemux->state = RMDEMUX_STATE_HEADER;
708 rmdemux->have_pads = FALSE;
709 gst_segment_init (&rmdemux->segment, GST_FORMAT_TIME);
710 rmdemux->running = FALSE;
712 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
718 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
720 switch (transition) {
721 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
723 case GST_STATE_CHANGE_PAUSED_TO_READY:{
724 gst_rmdemux_reset (rmdemux);
727 case GST_STATE_CHANGE_READY_TO_NULL:
736 /* this function is called when the pad is activated and should start
739 * We check if we can do random access to decide if we work push or
743 gst_rmdemux_sink_activate (GstPad * sinkpad, GstObject * parent)
748 query = gst_query_new_scheduling ();
750 if (!gst_pad_peer_query (sinkpad, query)) {
751 gst_query_unref (query);
755 pull_mode = gst_query_has_scheduling_mode (query, GST_PAD_MODE_PULL);
756 gst_query_unref (query);
761 GST_DEBUG_OBJECT (sinkpad, "activating pull");
762 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
766 GST_DEBUG_OBJECT (sinkpad, "activating push");
767 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
772 gst_rmdemux_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
773 GstPadMode mode, gboolean active)
778 demux = GST_RMDEMUX (parent);
781 case GST_PAD_MODE_PUSH:
782 demux->seekable = FALSE;
785 case GST_PAD_MODE_PULL:
787 demux->seekable = TRUE;
789 demux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
790 demux->data_offset = G_MAXUINT;
792 gst_pad_start_task (sinkpad, (GstTaskFunction) gst_rmdemux_loop,
795 res = gst_pad_stop_task (sinkpad);
806 /* random access mode - just pass over to our chain function */
808 gst_rmdemux_loop (GstPad * pad)
812 GstFlowReturn ret = GST_FLOW_OK;
815 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
817 GST_LOG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
818 rmdemux->loop_state, rmdemux->offset);
820 switch (rmdemux->state) {
821 case RMDEMUX_STATE_HEADER:
824 case RMDEMUX_STATE_HEADER_DATA:
827 case RMDEMUX_STATE_DATA_PACKET:
828 size = rmdemux->avg_packet_size;
830 case RMDEMUX_STATE_EOS:
831 GST_LOG_OBJECT (rmdemux, "At EOS, pausing task");
832 ret = GST_FLOW_UNEXPECTED;
835 GST_LOG_OBJECT (rmdemux, "Default: requires %d bytes (state is %d)",
836 (int) rmdemux->size, rmdemux->state);
837 size = rmdemux->size;
840 ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
841 if (ret != GST_FLOW_OK) {
842 if (rmdemux->offset == rmdemux->index_offset) {
843 /* The index isn't available so forget about it */
844 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
845 rmdemux->offset = rmdemux->data_offset;
846 GST_OBJECT_LOCK (rmdemux);
847 rmdemux->running = TRUE;
848 rmdemux->seekable = FALSE;
849 GST_OBJECT_UNLOCK (rmdemux);
852 GST_DEBUG_OBJECT (rmdemux, "Unable to pull %d bytes at offset 0x%08x "
853 "(pull_range returned flow %s, state is %d)", (gint) size,
854 rmdemux->offset, gst_flow_get_name (ret), GST_STATE (rmdemux));
859 /* Defer to the chain function */
860 ret = gst_rmdemux_chain (pad, GST_OBJECT_CAST (rmdemux), buffer);
861 if (ret != GST_FLOW_OK) {
862 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
867 rmdemux->offset += gst_buffer_get_size (buffer);
869 switch (rmdemux->loop_state) {
870 case RMDEMUX_LOOP_STATE_HEADER:
871 if (rmdemux->offset >= rmdemux->data_offset) {
872 /* It's the end of the header */
873 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
874 rmdemux->offset = rmdemux->index_offset;
877 case RMDEMUX_LOOP_STATE_INDEX:
878 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
879 if (rmdemux->index_offset == 0) {
880 /* We've read the last index */
881 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
882 rmdemux->offset = rmdemux->data_offset;
883 GST_OBJECT_LOCK (rmdemux);
884 rmdemux->running = TRUE;
885 GST_OBJECT_UNLOCK (rmdemux);
887 /* Get the next index */
888 rmdemux->offset = rmdemux->index_offset;
892 case RMDEMUX_LOOP_STATE_DATA:
901 const gchar *reason = gst_flow_get_name (ret);
903 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
904 rmdemux->segment_running = FALSE;
905 gst_pad_pause_task (rmdemux->sinkpad);
907 if (ret == GST_FLOW_UNEXPECTED) {
908 /* perform EOS logic */
909 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
912 /* for segment playback we need to post when (in stream time)
913 * we stopped, this is either stop (when set) or the duration. */
914 if ((stop = rmdemux->segment.stop) == -1)
915 stop = rmdemux->segment.duration;
917 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
918 gst_element_post_message (GST_ELEMENT (rmdemux),
919 gst_message_new_segment_done (GST_OBJECT (rmdemux),
920 GST_FORMAT_TIME, stop));
922 /* normal playback, send EOS to all linked pads */
923 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
924 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
926 } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_UNEXPECTED) {
927 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
928 (NULL), ("stream stopped, reason %s", reason));
929 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
936 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
940 for (i = 0; i < 4; i++) {
941 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
949 gst_rmdemux_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
951 GstFlowReturn ret = GST_FLOW_OK;
956 GstRMDemux *rmdemux = GST_RMDEMUX (parent);
958 if (rmdemux->base_ts == -1) {
959 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
960 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
961 GST_TIME_ARGS (rmdemux->base_ts));
964 gst_adapter_push (rmdemux->adapter, buffer);
966 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %d",
967 gst_buffer_get_size (buffer));
970 avail = gst_adapter_available (rmdemux->adapter);
972 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
973 switch (rmdemux->state) {
974 case RMDEMUX_STATE_HEADER:
976 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
979 data = gst_adapter_map (rmdemux->adapter, HEADER_SIZE);
981 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
982 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
983 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
985 /* Sanity-check. We assume that the FOURCC is printable ASCII */
986 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
987 /* Failed. Remain in HEADER state, try again... We flush only
988 * the actual FOURCC, not the entire header, because we could
989 * need to resync anywhere at all... really, this should never
991 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
993 gst_adapter_unmap (rmdemux->adapter);
994 gst_adapter_flush (rmdemux->adapter, 4);
999 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1001 " size=%08x object_version=%d",
1002 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1003 rmdemux->object_version);
1005 gst_adapter_unmap (rmdemux->adapter);
1006 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1008 switch (rmdemux->object_id) {
1009 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1010 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1012 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1013 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1015 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1016 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1018 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1019 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1021 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1022 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1024 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1025 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1028 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1033 case RMDEMUX_STATE_HEADER_UNKNOWN:
1035 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1038 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1039 GST_FOURCC_ARGS (rmdemux->object_id));
1041 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1042 rmdemux->state = RMDEMUX_STATE_HEADER;
1045 case RMDEMUX_STATE_HEADER_RMF:
1047 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1050 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1051 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1052 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1053 gst_adapter_unmap (rmdemux->adapter);
1054 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1056 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1058 rmdemux->state = RMDEMUX_STATE_HEADER;
1061 case RMDEMUX_STATE_HEADER_PROP:
1063 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1066 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1067 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1068 gst_adapter_unmap (rmdemux->adapter);
1069 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1071 rmdemux->state = RMDEMUX_STATE_HEADER;
1074 case RMDEMUX_STATE_HEADER_MDPR:
1076 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1079 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1080 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1081 gst_adapter_unmap (rmdemux->adapter);
1082 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1084 rmdemux->state = RMDEMUX_STATE_HEADER;
1087 case RMDEMUX_STATE_HEADER_CONT:
1089 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1092 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1093 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1094 gst_adapter_unmap (rmdemux->adapter);
1095 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1097 rmdemux->state = RMDEMUX_STATE_HEADER;
1100 case RMDEMUX_STATE_HEADER_DATA:
1102 /* If we haven't already done so then signal there are no more pads */
1103 if (!rmdemux->have_pads) {
1104 GST_LOG_OBJECT (rmdemux, "no more pads");
1105 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1106 rmdemux->have_pads = TRUE;
1109 /* The actual header is only 8 bytes */
1110 rmdemux->size = DATA_SIZE;
1111 GST_LOG_OBJECT (rmdemux, "data available %d",
1112 gst_adapter_available (rmdemux->adapter));
1113 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1116 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1117 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1118 gst_adapter_unmap (rmdemux->adapter);
1119 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1121 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1124 case RMDEMUX_STATE_HEADER_INDX:
1126 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1129 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1130 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1131 /* Only flush the header */
1132 gst_adapter_unmap (rmdemux->adapter);
1133 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1135 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1138 case RMDEMUX_STATE_INDX_DATA:
1140 /* There's not always an data to get... */
1141 if (rmdemux->size > 0) {
1142 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1145 data = gst_adapter_map (rmdemux->adapter, rmdemux->size);
1146 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1147 gst_adapter_unmap (rmdemux->adapter);
1148 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1151 rmdemux->state = RMDEMUX_STATE_HEADER;
1154 case RMDEMUX_STATE_DATA_PACKET:
1158 if (gst_adapter_available (rmdemux->adapter) < 2)
1161 gst_adapter_copy (rmdemux->adapter, header, 0, 2);
1162 version = RMDEMUX_GUINT16_GET (header);
1163 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1165 if (version == 0 || version == 1) {
1168 if (gst_adapter_available (rmdemux->adapter) < 4)
1171 gst_adapter_copy (rmdemux->adapter, header, 0, 4);
1173 length = RMDEMUX_GUINT16_GET (header + 2);
1174 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1177 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1178 /* Invalid, just drop it */
1179 gst_adapter_flush (rmdemux->adapter, 4);
1183 avail = gst_adapter_available (rmdemux->adapter);
1187 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1190 /* flush version and length */
1191 gst_adapter_flush (rmdemux->adapter, 4);
1194 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1196 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1197 rmdemux->chunk_index++;
1200 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1201 rmdemux->state = RMDEMUX_STATE_HEADER;
1204 gst_adapter_flush (rmdemux->adapter, 2);
1206 if (rmdemux->data_offset == 0) {
1207 GST_LOG_OBJECT (rmdemux,
1208 "No further data, internal demux state EOS");
1209 rmdemux->state = RMDEMUX_STATE_EOS;
1211 rmdemux->state = RMDEMUX_STATE_HEADER;
1215 case RMDEMUX_STATE_EOS:
1216 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1219 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1228 static GstRMDemuxStream *
1229 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1233 for (cur = rmdemux->streams; cur; cur = cur->next) {
1234 GstRMDemuxStream *stream = cur->data;
1236 if (stream->id == id) {
1245 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1249 for (cur = rmdemux->streams; cur; cur = cur->next) {
1250 GstRMDemuxStream *stream = cur->data;
1252 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1253 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1255 switch (GST_EVENT_TYPE (event)) {
1256 case GST_EVENT_FLUSH_STOP:
1257 stream->last_ts = -1;
1258 stream->next_ts = -1;
1259 stream->last_seq = -1;
1260 stream->next_seq = -1;
1261 stream->last_flow = GST_FLOW_OK;
1266 gst_event_ref (event);
1267 gst_pad_push_event (stream->pad, event);
1269 gst_event_unref (event);
1273 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1275 GstCaps *stream_caps = NULL;
1276 const gchar *codec_tag = NULL;
1277 gchar *codec_name = NULL;
1280 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1281 char *name = g_strdup_printf ("video_%u", rmdemux->n_video_streams);
1284 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1287 codec_tag = GST_TAG_VIDEO_CODEC;
1289 switch (stream->fourcc) {
1290 case GST_RM_VDO_RV10:
1293 case GST_RM_VDO_RV20:
1296 case GST_RM_VDO_RV30:
1299 case GST_RM_VDO_RV40:
1303 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1304 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1305 GST_WARNING_OBJECT (rmdemux,
1306 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1307 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1312 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1314 "format", G_TYPE_INT,
1315 (int) stream->format,
1316 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1320 gst_caps_set_simple (stream_caps,
1321 "width", G_TYPE_INT, stream->width,
1322 "height", G_TYPE_INT, stream->height,
1323 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1324 stream->framerate_denominator, NULL);
1326 rmdemux->n_video_streams++;
1328 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1329 char *name = g_strdup_printf ("audio_%u", rmdemux->n_audio_streams);
1332 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1333 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1336 codec_tag = GST_TAG_AUDIO_CODEC;
1338 switch (stream->fourcc) {
1339 /* Older RealAudio Codecs */
1340 case GST_RM_AUD_14_4:
1344 case GST_RM_AUD_28_8:
1348 /* DolbyNet (Dolby AC3, low bitrate) */
1349 case GST_RM_AUD_DNET:
1351 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1352 (int) stream->rate, NULL);
1353 stream->needs_descrambling = TRUE;
1354 stream->subpackets_needed = 1;
1355 stream->subpackets = NULL;
1359 case GST_RM_AUD_RAAC:
1360 case GST_RM_AUD_RACP:
1362 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1363 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1364 if (stream->extra_data_size > 0) {
1365 /* strip off an unknown byte in the extra data */
1366 stream->extra_data_size--;
1367 stream->extra_data++;
1369 stream->needs_descrambling = TRUE;
1370 stream->subpackets_needed = 1;
1371 stream->subpackets = NULL;
1375 case GST_RM_AUD_ATRC:
1376 stream_caps = gst_caps_new_empty_simple ("audio/x-vnd.sony.atrac3");
1377 stream->needs_descrambling = TRUE;
1378 stream->subpackets_needed = stream->height;
1379 stream->subpackets = NULL;
1382 /* RealAudio G2 audio */
1383 case GST_RM_AUD_COOK:
1385 stream->needs_descrambling = TRUE;
1386 stream->subpackets_needed = stream->height;
1387 stream->subpackets = NULL;
1390 /* RALF is lossless */
1391 case GST_RM_AUD_RALF:
1392 GST_DEBUG_OBJECT (rmdemux, "RALF");
1393 stream_caps = gst_caps_new_empty_simple ("audio/x-ralf-mpeg4-generic");
1396 case GST_RM_AUD_SIPR:
1398 if (stream->flavor > 3) {
1399 GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
1405 GST_DEBUG_OBJECT (rmdemux, "SIPR");
1406 stream_caps = gst_caps_new_empty_simple ("audio/x-sipro");
1407 stream->needs_descrambling = TRUE;
1408 stream->subpackets_needed = stream->height;
1409 stream->subpackets = NULL;
1410 stream->leaf_size = sipr_subpk_size[stream->flavor];
1415 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1416 "fourcc", G_TYPE_UINT, stream->fourcc, NULL);
1417 GST_WARNING_OBJECT (rmdemux,
1418 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1419 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1425 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1426 (int) version, NULL);
1430 gst_caps_set_simple (stream_caps,
1431 "flavor", G_TYPE_INT, (int) stream->flavor,
1432 "rate", G_TYPE_INT, (int) stream->rate,
1433 "channels", G_TYPE_INT, (int) stream->n_channels,
1434 "width", G_TYPE_INT, (int) stream->sample_width,
1435 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1436 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1437 "bitrate", G_TYPE_INT, (int) stream->bitrate,
1438 "height", G_TYPE_INT, (int) stream->height, NULL);
1440 rmdemux->n_audio_streams++;
1442 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1448 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1449 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1450 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1451 g_slist_length (rmdemux->streams));
1453 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1456 if (stream->pad && stream_caps) {
1458 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1459 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1461 /* add codec_data if there is any */
1462 if (stream->extra_data_size > 0) {
1465 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1466 gst_buffer_fill (buffer, 0, stream->extra_data, stream->extra_data_size);
1468 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1471 gst_buffer_unref (buffer);
1474 gst_pad_use_fixed_caps (stream->pad);
1476 gst_pad_set_caps (stream->pad, stream_caps);
1477 gst_pad_set_event_function (stream->pad,
1478 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1479 gst_pad_set_query_function (stream->pad,
1480 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1482 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1483 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1484 gst_pad_set_active (stream->pad, TRUE);
1485 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1487 codec_name = gst_pb_utils_get_codec_description (stream_caps);
1489 /* save for later, we must send the tags after the newsegment event */
1490 if (codec_tag != NULL && codec_name != NULL) {
1491 if (stream->pending_tags == NULL)
1492 stream->pending_tags = gst_tag_list_new_empty ();
1493 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1494 codec_tag, codec_name, NULL);
1495 g_free (codec_name);
1502 gst_caps_unref (stream_caps);
1506 re_skip_pascal_string (const guint8 * ptr)
1516 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1518 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1519 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1523 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1525 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1526 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1527 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1528 RMDEMUX_GUINT32_GET (data + 8));
1529 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1530 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1531 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1532 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1534 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1535 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1537 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1538 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1539 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1540 rmdemux->index_offset);
1541 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1542 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1543 rmdemux->data_offset);
1544 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1545 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1549 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1551 GstRMDemuxStream *stream;
1552 char *stream1_type_string;
1553 char *stream2_type_string;
1557 guint32 max_bitrate;
1558 guint32 avg_bitrate;
1560 stream = g_new0 (GstRMDemuxStream, 1);
1562 stream->id = RMDEMUX_GUINT16_GET (data);
1563 stream->index = NULL;
1564 stream->seek_offset = 0;
1565 stream->last_ts = -1;
1566 stream->next_ts = -1;
1567 stream->last_flow = GST_FLOW_OK;
1568 stream->discont = TRUE;
1569 stream->adapter = gst_adapter_new ();
1570 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1572 /* parse the bitrates */
1573 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1574 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1575 stream->bitrate = avg_bitrate;
1576 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1577 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1578 if (max_bitrate != 0) {
1579 if (stream->pending_tags == NULL)
1580 stream->pending_tags = gst_tag_list_new_empty ();
1581 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1582 GST_TAG_MAXIMUM_BITRATE, max_bitrate, NULL);
1584 if (avg_bitrate != 0) {
1585 if (stream->pending_tags == NULL)
1586 stream->pending_tags = gst_tag_list_new_empty ();
1587 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1588 GST_TAG_BITRATE, avg_bitrate, NULL);
1592 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1593 length - offset, &str_len);
1595 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1596 length - offset, &str_len);
1599 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1601 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1602 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1604 * so, we should not rely on it to know which stream type it is
1607 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1608 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1610 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1611 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1612 } else if (strcmp (stream2_type_string,
1613 "video/x-pn-multirate-realvideo") == 0) {
1614 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1615 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1616 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1617 } else if (strcmp (stream2_type_string,
1618 "audio/x-pn-multirate-realaudio") == 0) {
1619 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1620 } else if (strcmp (stream2_type_string,
1621 "audio/x-pn-multirate-realaudio-live") == 0) {
1622 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1623 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1624 /* Another audio type found in the real testsuite */
1625 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1626 } else if (strcmp (stream1_type_string, "") == 0 &&
1627 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1628 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1630 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1631 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1632 stream1_type_string, stream2_type_string);
1634 g_free (stream1_type_string);
1635 g_free (stream2_type_string);
1639 stream->subtype = stream_type;
1640 switch (stream_type) {
1642 case GST_RMDEMUX_STREAM_VIDEO:
1643 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1644 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1645 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1646 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1647 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1648 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1649 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1650 stream->extra_data_size = length - (offset + 26);
1651 stream->extra_data = (guint8 *) data + offset + 26;
1652 /* Natural way to represent framerates here requires unsigned 32 bit
1653 * numerator, which we don't have. For the nasty case, approximate...
1656 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1657 RMDEMUX_GUINT16_GET (data + offset + 24);
1658 if (numerator > G_MAXINT) {
1659 stream->framerate_numerator = (gint) (numerator >> 1);
1660 stream->framerate_denominator = 32768;
1662 stream->framerate_numerator = (gint) numerator;
1663 stream->framerate_denominator = 65536;
1667 GST_DEBUG_OBJECT (rmdemux,
1668 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1669 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1670 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1671 stream->rate, stream->framerate_numerator,
1672 stream->framerate_denominator, stream->subformat, stream->format,
1673 stream->extra_data_size);
1675 case GST_RMDEMUX_STREAM_AUDIO:{
1676 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1677 GST_INFO ("stream version = %u", stream->version);
1678 switch (stream->version) {
1680 stream->fourcc = GST_RM_AUD_14_4;
1681 stream->packet_size = 20;
1682 stream->rate = 8000;
1683 stream->n_channels = 1;
1684 stream->sample_width = 16;
1686 stream->leaf_size = 0;
1690 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1691 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1692 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1693 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1694 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1695 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1696 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1697 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1698 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1699 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1700 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1701 stream->extra_data_size);
1702 if (length - (offset + 73) >= stream->extra_data_size) {
1703 stream->extra_data = (guint8 *) data + offset + 73;
1705 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1706 stream->extra_data_size = 0;
1710 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1711 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1712 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1713 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1714 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1715 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1716 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1717 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1718 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1719 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1720 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1721 stream->extra_data_size);
1722 if (length - (offset + 78) >= stream->extra_data_size) {
1723 stream->extra_data = (guint8 *) data + offset + 78;
1725 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1726 stream->extra_data_size = 0;
1730 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1735 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1736 GST_DEBUG_OBJECT (rmdemux,
1737 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1738 stream->rate, stream->sample_width, stream->n_channels);
1742 case GST_RMDEMUX_STREAM_FILEINFO:
1746 /* Length of this section */
1747 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1748 RMDEMUX_GUINT32_GET (data + offset));
1751 /* Unknown : 00 00 00 00 */
1754 /* Number of variables that would follow (loop iterations) */
1755 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1758 while (element_nb) {
1759 /* Category Id : 00 00 00 XX 00 00 */
1763 offset += re_skip_pascal_string (data + offset);
1765 /* Variable Value Type */
1766 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1767 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1770 /* Variable Value */
1771 offset += re_skip_pascal_string (data + offset);
1777 case GST_RMDEMUX_STREAM_UNKNOWN:
1782 gst_rmdemux_add_stream (rmdemux, stream);
1786 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1791 n = RMDEMUX_GUINT32_GET (data);
1792 id = RMDEMUX_GUINT16_GET (data + 4);
1793 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1795 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1798 /* Point to the next index_stream */
1799 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1801 /* Return the length of the index */
1806 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1811 GstRMDemuxIndex *index;
1813 /* The number of index records */
1816 if (rmdemux->index_stream == NULL)
1819 /* don't parse the index a second time when operating pull-based and
1820 * reaching the end of the file */
1821 if (rmdemux->index_stream->index_length > 0) {
1822 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1826 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1827 rmdemux->index_stream->index = index;
1828 rmdemux->index_stream->index_length = n;
1830 for (i = 0; i < n; i++) {
1831 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1832 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1834 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1835 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1842 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1844 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1845 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1846 rmdemux->chunk_index = 0;
1847 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1848 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1852 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1856 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1858 GST_LOG_OBJECT (rmdemux, "tags: %" GST_PTR_FORMAT, tags);
1860 rmdemux->pending_tags =
1861 gst_tag_list_merge (rmdemux->pending_tags, tags, GST_TAG_MERGE_APPEND);
1864 static GstFlowReturn
1865 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1870 /* store the value */
1871 stream->last_flow = ret;
1873 /* if it's success we can return the value right away */
1874 if (ret == GST_FLOW_OK)
1877 /* any other error that is not-linked can be returned right
1879 if (ret != GST_FLOW_NOT_LINKED)
1882 for (cur = rmdemux->streams; cur; cur = cur->next) {
1883 GstRMDemuxStream *ostream = cur->data;
1885 ret = ostream->last_flow;
1886 /* some other return value (must be SUCCESS but we can return
1887 * other values as well) */
1888 if (ret != GST_FLOW_NOT_LINKED)
1891 /* if we get here, all other pads were unlinked and we return
1892 * NOT_LINKED then */
1898 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1899 GstRMDemuxStream * stream)
1901 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1904 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1905 stream->subpackets->len);
1906 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1907 g_ptr_array_set_size (stream->subpackets, 0);
1910 static GstFlowReturn
1911 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1913 GstFlowReturn ret = GST_FLOW_ERROR;
1916 guint packet_size = stream->packet_size;
1917 guint height = stream->subpackets->len;
1918 guint leaf_size = stream->leaf_size;
1921 g_assert (stream->height == height);
1923 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1926 outbuf = gst_buffer_new_and_alloc (height * packet_size);
1927 outdata = gst_buffer_map (outbuf, NULL, NULL, GST_MAP_WRITE);
1929 for (p = 0; p < height; ++p) {
1930 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1931 guint8 *b_data = gst_buffer_map (b, NULL, NULL, GST_MAP_READ);
1934 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1936 for (x = 0; x < packet_size / leaf_size; ++x) {
1939 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1941 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1942 memcpy (outdata + leaf_size * idx, b_data + leaf_size * x, leaf_size);
1944 gst_buffer_unmap (b, b_data, -1);
1946 gst_buffer_unmap (outbuf, outdata, -1);
1948 /* some decoders, such as realaudiodec, need to be fed in packet units */
1949 for (p = 0; p < height; ++p) {
1953 gst_buffer_copy_region (outbuf, GST_BUFFER_COPY_ALL, p * packet_size,
1956 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1957 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1959 if (stream->discont) {
1960 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1961 stream->discont = FALSE;
1964 ret = gst_pad_push (stream->pad, subbuf);
1965 if (ret != GST_FLOW_OK)
1969 gst_buffer_unref (outbuf);
1971 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1976 static GstFlowReturn
1977 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1978 GstRMDemuxStream * stream)
1982 buf = g_ptr_array_index (stream->subpackets, 0);
1983 g_ptr_array_index (stream->subpackets, 0) = NULL;
1984 g_ptr_array_set_size (stream->subpackets, 0);
1986 buf = gst_rm_utils_descramble_dnet_buffer (buf);
1988 if (stream->discont) {
1989 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
1990 stream->discont = FALSE;
1992 return gst_pad_push (stream->pad, buf);
1995 static GstFlowReturn
1996 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
1997 GstRMDemuxStream * stream)
2000 GstBuffer *buf, *outbuf;
2001 guint frames, index, i;
2003 GstClockTime timestamp;
2007 buf = g_ptr_array_index (stream->subpackets, 0);
2008 g_ptr_array_index (stream->subpackets, 0) = NULL;
2009 g_ptr_array_set_size (stream->subpackets, 0);
2011 data = gst_buffer_map (buf, NULL, NULL, GST_MAP_READ);
2012 timestamp = GST_BUFFER_TIMESTAMP (buf);
2014 frames = (data[1] & 0xf0) >> 4;
2015 index = 2 * frames + 2;
2017 for (i = 0; i < frames; i++) {
2018 guint len = (data[i * 2 + 2] << 8) | data[i * 2 + 3];
2020 outbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, index, len);
2022 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2026 if (stream->discont) {
2027 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2028 stream->discont = FALSE;
2030 res = gst_pad_push (stream->pad, outbuf);
2031 if (res != GST_FLOW_OK)
2034 gst_buffer_unmap (buf, data, -1);
2035 gst_buffer_unref (buf);
2039 static GstFlowReturn
2040 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2041 GstRMDemuxStream * stream)
2046 guint packet_size = stream->packet_size;
2047 guint height = stream->subpackets->len;
2050 g_assert (stream->height == height);
2052 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2053 stream->leaf_size, height);
2055 outbuf = gst_buffer_new_and_alloc (height * packet_size);
2056 outdata = gst_buffer_map (outbuf, NULL, NULL, GST_MAP_WRITE);
2058 for (p = 0; p < height; ++p) {
2059 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2062 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
2064 gst_buffer_extract (b, 0, outdata + packet_size * p, packet_size);
2066 gst_buffer_unmap (outbuf, outdata, -1);
2068 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
2069 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
2071 if (stream->discont) {
2072 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2073 stream->discont = FALSE;
2076 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2078 ret = gst_pad_push (stream->pad, outbuf);
2080 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2085 static GstFlowReturn
2086 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2087 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2091 if (stream->subpackets == NULL)
2092 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2094 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
2095 stream->subpackets_needed, gst_buffer_get_size (buf), keyframe);
2097 if (keyframe && stream->subpackets->len > 0) {
2098 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2101 g_ptr_array_add (stream->subpackets, buf);
2103 if (stream->subpackets->len < stream->subpackets_needed)
2106 g_assert (stream->subpackets->len >= 1);
2108 switch (stream->fourcc) {
2109 case GST_RM_AUD_DNET:
2110 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2112 case GST_RM_AUD_COOK:
2113 case GST_RM_AUD_ATRC:
2114 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2116 case GST_RM_AUD_RAAC:
2117 case GST_RM_AUD_RACP:
2118 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2120 case GST_RM_AUD_SIPR:
2121 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2124 g_assert_not_reached ();
2131 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2132 guint8 * data, GstClockTime timestamp)
2136 GstClockTime ts = timestamp;
2138 if (timestamp == GST_CLOCK_TIME_NONE)
2141 /* only adjust when we have a stream with B frames */
2142 if (stream->format < 0x20200002)
2145 /* Fix timestamp. */
2146 switch (stream->fourcc) {
2147 case GST_RM_VDO_RV10:
2149 case GST_RM_VDO_RV20:
2152 * Bit 1- 2: frame type
2154 * Bit 10-22: sequence number
2157 frame_type = (data[0] >> 6) & 0x03;
2158 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2161 case GST_RM_VDO_RV30:
2165 * Bit 3: skip packet if 1
2166 * Bit 4- 5: frame type
2168 * Bit 13-25: sequence number
2171 frame_type = (data[0] >> 3) & 0x03;
2172 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2175 case GST_RM_VDO_RV40:
2178 * Bit 1: skip packet if 1
2179 * Bit 2- 3: frame type
2181 * Bit 14-26: sequence number
2184 frame_type = (data[0] >> 5) & 0x03;
2185 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2189 goto unknown_version;
2192 switch (frame_type) {
2196 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2198 if (stream->next_ts == -1)
2199 stream->next_ts = timestamp;
2201 timestamp = stream->next_ts;
2202 stream->last_ts = stream->next_ts;
2203 stream->next_ts = ts;
2204 stream->last_seq = stream->next_seq;
2205 stream->next_seq = seq;
2210 GST_LOG_OBJECT (rmdemux, "P frame");
2212 timestamp = stream->last_ts = stream->next_ts;
2213 if (seq < stream->next_seq)
2214 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2216 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2217 stream->last_seq = stream->next_seq;
2218 stream->next_seq = seq;
2223 GST_LOG_OBJECT (rmdemux, "B frame");
2225 if (seq < stream->last_seq) {
2227 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2229 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2234 goto unknown_frame_type;
2238 GST_LOG_OBJECT (rmdemux,
2239 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2240 GST_TIME_ARGS (timestamp));
2247 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2248 ("Unknown version: %i.", stream->version), (NULL));
2249 return GST_FLOW_ERROR;
2254 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2255 frame_type), (NULL));
2256 return GST_FLOW_ERROR;
2260 #define PARSE_NUMBER(data, size, number, label) \
2264 number = GST_READ_UINT16_BE (data); \
2265 if (!(number & 0xc000)) { \
2268 number = GST_READ_UINT32_BE (data); \
2278 static GstFlowReturn
2279 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2280 GstBuffer * in, guint offset, guint16 version,
2281 GstClockTime timestamp, gboolean key)
2288 base = gst_buffer_map (in, &size, NULL, GST_MAP_READ);
2290 data = base + offset;
2293 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2294 * was previously for that given stream. */
2295 ret = stream->last_flow;
2301 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2302 guint fragment_size;
2303 GstBuffer *fragment;
2305 pkg_header = *data++;
2309 * bit 7: 1=last block in block chain
2310 * bit 6: 1=short header (only one block?)
2312 if ((pkg_header & 0xc0) == 0x40) {
2313 /* skip unknown byte */
2319 if ((pkg_header & 0x40) == 0) {
2320 pkg_subseq = (*data++) & 0x7f;
2327 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2330 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2334 goto not_enough_data;
2336 pkg_seqnum = *data++;
2340 GST_DEBUG_OBJECT (rmdemux,
2341 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2342 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2344 /* calc size of fragment */
2345 if ((pkg_header & 0xc0) == 0x80) {
2346 fragment_size = pkg_offset;
2348 if ((pkg_header & 0xc0) == 0)
2349 fragment_size = size;
2351 fragment_size = pkg_length;
2353 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2355 /* get the fragment */
2357 gst_buffer_copy_region (in, GST_BUFFER_COPY_ALL, data - base,
2360 if (pkg_subseq == 1) {
2361 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2362 gst_adapter_clear (stream->adapter);
2363 stream->frag_current = 0;
2364 stream->frag_count = 0;
2365 stream->frag_length = pkg_length;
2366 } else if (pkg_subseq == 0) {
2367 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2368 stream->frag_current = 0;
2369 stream->frag_count = 0;
2370 stream->frag_length = fragment_size;
2373 /* put fragment in adapter */
2374 gst_adapter_push (stream->adapter, fragment);
2375 stream->frag_offset[stream->frag_count] = stream->frag_current;
2376 stream->frag_current += fragment_size;
2377 stream->frag_count++;
2379 if (stream->frag_count > MAX_FRAGS)
2380 goto too_many_fragments;
2382 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2383 stream->frag_current, stream->frag_length);
2385 /* flush fragment when complete */
2386 if (stream->frag_current >= stream->frag_length) {
2388 guint8 *outdata, *outbase;
2392 /* calculate header size, which is:
2393 * 1 byte for the number of fragments - 1
2394 * for each fragment:
2395 * 4 bytes 0x00000001 little endian
2396 * 4 bytes fragment offset
2398 * This is also the matroska header for realvideo, the decoder needs the
2399 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2400 * in front of the data.
2402 header_size = 1 + (8 * (stream->frag_count));
2404 GST_DEBUG_OBJECT (rmdemux,
2405 "fragmented completed. count %d, header_size %u", stream->frag_count,
2408 avail = gst_adapter_available (stream->adapter);
2410 out = gst_buffer_new_and_alloc (header_size + avail);
2411 outbase = gst_buffer_map (out, NULL, NULL, GST_MAP_WRITE);
2415 *outdata++ = stream->frag_count - 1;
2416 for (i = 0; i < stream->frag_count; i++) {
2417 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2419 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2423 /* copy packet data after the header now */
2424 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2425 gst_adapter_flush (stream->adapter, avail);
2427 stream->frag_current = 0;
2428 stream->frag_count = 0;
2429 stream->frag_length = 0;
2431 if (timestamp != -1) {
2432 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2433 timestamp -= rmdemux->first_ts;
2437 if (rmdemux->base_ts != -1)
2438 timestamp += rmdemux->base_ts;
2441 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2443 gst_buffer_unmap (out, outbase, -1);
2445 GST_BUFFER_TIMESTAMP (out) = timestamp;
2447 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2448 GST_TIME_ARGS (timestamp));
2450 if (stream->discont) {
2451 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2452 stream->discont = FALSE;
2456 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DELTA_UNIT);
2459 ret = gst_pad_push (stream->pad, out);
2460 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2461 if (ret != GST_FLOW_OK)
2464 timestamp = GST_CLOCK_TIME_NONE;
2466 data += fragment_size;
2467 size -= fragment_size;
2469 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2472 gst_buffer_unmap (in, base, -1);
2473 gst_buffer_unref (in);
2480 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2487 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2488 ("Got more fragments (%u) than can be handled (%u)",
2489 stream->frag_count, MAX_FRAGS), (NULL));
2490 ret = GST_FLOW_ERROR;
2495 static GstFlowReturn
2496 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2497 GstBuffer * in, guint offset, guint16 version,
2498 GstClockTime timestamp, gboolean key)
2503 buffer = gst_buffer_copy_region (in, GST_BUFFER_COPY_MEMORY, offset, -1);
2505 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2506 timestamp -= rmdemux->first_ts;
2510 if (rmdemux->base_ts != -1)
2511 timestamp += rmdemux->base_ts;
2513 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2515 if (stream->needs_descrambling) {
2516 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2517 GST_TIME_ARGS (timestamp));
2518 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2520 GST_LOG_OBJECT (rmdemux,
2521 "Pushing buffer of size %d, timestamp %" GST_TIME_FORMAT "to pad %s",
2522 gst_buffer_get_size (buffer), GST_TIME_ARGS (timestamp),
2523 GST_PAD_NAME (stream->pad));
2525 if (stream->discont) {
2526 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2527 stream->discont = FALSE;
2529 ret = gst_pad_push (stream->pad, buffer);
2532 gst_buffer_unref (in);
2537 static GstFlowReturn
2538 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2541 GstRMDemuxStream *stream;
2543 GstFlowReturn cret, ret;
2544 GstClockTime timestamp;
2546 guint8 *data, *base;
2550 base = data = gst_buffer_map (in, &size, NULL, GST_MAP_READ);
2553 id = RMDEMUX_GUINT16_GET (data);
2555 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2556 if (!stream || !stream->pad)
2557 goto unknown_stream;
2559 /* timestamp in Msec */
2560 ts = RMDEMUX_GUINT32_GET (data + 2);
2561 timestamp = ts * GST_MSECOND;
2563 rmdemux->segment.position = timestamp;
2565 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2566 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2567 GST_TIME_ARGS (timestamp), size, version, ts);
2569 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2570 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2571 GST_TIME_ARGS (timestamp));
2572 rmdemux->first_ts = timestamp;
2575 /* skip stream_id and timestamp */
2580 flags = GST_READ_UINT8 (data + 1);
2585 /* version 1 has an extra byte */
2590 offset = data - base;
2591 gst_buffer_unmap (in, base, -1);
2593 key = (flags & 0x02) != 0;
2594 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2596 if (rmdemux->need_newsegment) {
2599 event = gst_event_new_segment (&rmdemux->segment);
2601 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2602 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2604 gst_rmdemux_send_event (rmdemux, event);
2605 rmdemux->need_newsegment = FALSE;
2607 if (rmdemux->pending_tags != NULL) {
2608 gst_rmdemux_send_event (rmdemux,
2609 gst_event_new_tag (rmdemux->pending_tags));
2610 rmdemux->pending_tags = NULL;
2614 if (stream->pending_tags != NULL) {
2615 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2616 gst_pad_push_event (stream->pad, gst_event_new_tag (stream->pending_tags));
2617 stream->pending_tags = NULL;
2620 if ((rmdemux->offset + size) <= stream->seek_offset) {
2621 GST_DEBUG_OBJECT (rmdemux,
2622 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2623 stream->id, stream->seek_offset, rmdemux->offset, size);
2625 gst_buffer_unref (in);
2629 /* do special headers */
2630 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2632 gst_rmdemux_parse_video_packet (rmdemux, stream, in, offset,
2633 version, timestamp, key);
2634 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2636 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, offset,
2637 version, timestamp, key);
2639 gst_buffer_unref (in);
2643 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2651 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2653 gst_buffer_unmap (in, base, -1);
2654 gst_buffer_unref (in);
2660 gst_rmdemux_plugin_init (GstPlugin * plugin)
2662 return gst_element_register (plugin, "rmdemux",
2663 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);