1 /* GStreamer RealMedia demuxer
2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2003> David A. Schleef <ds@schleef.org>
4 * Copyright (C) <2004> Stephane Loeuillet <gstreamer@leroutier.net>
5 * Copyright (C) <2005> Owen Fraser-Green <owen@discobabe.net>
6 * Copyright (C) <2005> Michael Smith <fluendo.com>
7 * Copyright (C) <2006> Wim Taymans <wim@fluendo.com>
8 * Copyright (C) <2006> Tim-Philipp Müller <tim centricular net>
9 * Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Library General Public
13 * License as published by the Free Software Foundation; either
14 * version 2 of the License, or (at your option) any later version.
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Library General Public License for more details.
21 * You should have received a copy of the GNU Library General Public
22 * License along with this library; if not, write to the
23 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 * Boston, MA 02111-1307, USA.
37 #define RMDEMUX_GUINT32_GET(a) GST_READ_UINT32_BE(a)
38 #define RMDEMUX_GUINT16_GET(a) GST_READ_UINT16_BE(a)
39 #define RMDEMUX_FOURCC_GET(a) GST_READ_UINT32_LE(a)
40 #define HEADER_SIZE 10
45 static const guint8 sipr_subpk_size[4] = { 29, 19, 37, 20 };
47 typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
49 struct _GstRMDemuxStream
58 GstFlowReturn last_flow;
63 GstRMDemuxIndex *index;
65 gint framerate_numerator;
66 gint framerate_denominator;
72 guint16 rate; /* samplerate */
73 guint16 n_channels; /* channels */
74 guint16 sample_width; /* bits_per_sample */
75 guint16 leaf_size; /* subpacket_size */
76 guint32 packet_size; /* coded_frame_size */
78 guint32 extra_data_size; /* codec_data_length */
79 guint8 *extra_data; /* extras */
81 gboolean needs_descrambling;
82 guint subpackets_needed; /* subpackets needed for descrambling */
83 GPtrArray *subpackets; /* array containing subpacket GstBuffers */
85 /* Variables needed for fixing timestamps. */
86 GstClockTime next_ts, last_ts;
87 guint16 next_seq, last_seq;
94 guint frag_offset[MAX_FRAGS];
97 GstTagList *pending_tags;
100 struct _GstRMDemuxIndex
103 GstClockTime timestamp;
106 static GstStaticPadTemplate gst_rmdemux_sink_template =
107 GST_STATIC_PAD_TEMPLATE ("sink",
110 GST_STATIC_CAPS ("application/vnd.rn-realmedia")
113 static GstStaticPadTemplate gst_rmdemux_videosrc_template =
114 GST_STATIC_PAD_TEMPLATE ("video_%02d",
117 GST_STATIC_CAPS_ANY);
119 static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
120 GST_STATIC_PAD_TEMPLATE ("audio_%02d",
123 GST_STATIC_CAPS_ANY);
125 GST_DEBUG_CATEGORY_STATIC (rmdemux_debug);
126 #define GST_CAT_DEFAULT rmdemux_debug
128 static GstElementClass *parent_class = NULL;
130 static void gst_rmdemux_class_init (GstRMDemuxClass * klass);
131 static void gst_rmdemux_base_init (GstRMDemuxClass * klass);
132 static void gst_rmdemux_init (GstRMDemux * rmdemux);
133 static void gst_rmdemux_finalize (GObject * object);
134 static GstStateChangeReturn gst_rmdemux_change_state (GstElement * element,
135 GstStateChange transition);
136 static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer);
137 static void gst_rmdemux_loop (GstPad * pad);
138 static gboolean gst_rmdemux_sink_activate (GstPad * sinkpad);
139 static gboolean gst_rmdemux_sink_activate_push (GstPad * sinkpad,
141 static gboolean gst_rmdemux_sink_activate_pull (GstPad * sinkpad,
143 static gboolean gst_rmdemux_sink_event (GstPad * pad, GstEvent * event);
144 static gboolean gst_rmdemux_src_event (GstPad * pad, GstEvent * event);
145 static void gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event);
146 static const GstQueryType *gst_rmdemux_src_query_types (GstPad * pad);
147 static gboolean gst_rmdemux_src_query (GstPad * pad, GstQuery * query);
148 static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux,
151 static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data,
153 static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data,
155 static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux,
156 const guint8 * data, int length);
157 static guint gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data,
159 static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data,
161 static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data,
163 static GstFlowReturn gst_rmdemux_parse_packet (GstRMDemux * rmdemux,
164 GstBuffer * in, guint16 version);
165 static void gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux,
166 const guint8 * data, int length);
167 static void gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
168 GstRMDemuxStream * stream);
169 static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
173 gst_rmdemux_get_type (void)
175 static GType rmdemux_type = 0;
178 static const GTypeInfo rmdemux_info = {
179 sizeof (GstRMDemuxClass),
180 (GBaseInitFunc) gst_rmdemux_base_init, NULL,
181 (GClassInitFunc) gst_rmdemux_class_init,
182 NULL, NULL, sizeof (GstRMDemux), 0,
183 (GInstanceInitFunc) gst_rmdemux_init,
187 g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
194 gst_rmdemux_base_init (GstRMDemuxClass * klass)
196 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
198 gst_element_class_add_pad_template (element_class,
199 gst_static_pad_template_get (&gst_rmdemux_sink_template));
200 gst_element_class_add_pad_template (element_class,
201 gst_static_pad_template_get (&gst_rmdemux_videosrc_template));
202 gst_element_class_add_pad_template (element_class,
203 gst_static_pad_template_get (&gst_rmdemux_audiosrc_template));
204 gst_element_class_set_details_simple (element_class, "RealMedia Demuxer",
206 "Demultiplex a RealMedia file into audio and video streams",
207 "David Schleef <ds@schleef.org>");
211 gst_rmdemux_class_init (GstRMDemuxClass * klass)
213 GObjectClass *gobject_class;
214 GstElementClass *gstelement_class;
216 gobject_class = (GObjectClass *) klass;
217 gstelement_class = (GstElementClass *) klass;
219 parent_class = g_type_class_peek_parent (klass);
221 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rmdemux_change_state);
223 GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
224 0, "Demuxer for Realmedia streams");
226 gobject_class->finalize = gst_rmdemux_finalize;
230 gst_rmdemux_finalize (GObject * object)
232 GstRMDemux *rmdemux = GST_RMDEMUX (object);
234 if (rmdemux->adapter) {
235 g_object_unref (rmdemux->adapter);
236 rmdemux->adapter = NULL;
239 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
243 gst_rmdemux_init (GstRMDemux * rmdemux)
246 gst_pad_new_from_static_template (&gst_rmdemux_sink_template, "sink");
247 gst_pad_set_event_function (rmdemux->sinkpad,
248 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_event));
249 gst_pad_set_chain_function (rmdemux->sinkpad,
250 GST_DEBUG_FUNCPTR (gst_rmdemux_chain));
251 gst_pad_set_activate_function (rmdemux->sinkpad,
252 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate));
253 gst_pad_set_activatepull_function (rmdemux->sinkpad,
254 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_pull));
255 gst_pad_set_activatepush_function (rmdemux->sinkpad,
256 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_push));
258 gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
260 rmdemux->adapter = gst_adapter_new ();
261 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
262 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
263 rmdemux->need_newsegment = TRUE;
265 gst_rm_utils_run_tests ();
269 gst_rmdemux_sink_event (GstPad * pad, GstEvent * event)
274 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
276 GST_LOG_OBJECT (pad, "%s event", GST_EVENT_TYPE_NAME (event));
278 switch (GST_EVENT_TYPE (event)) {
279 case GST_EVENT_NEWSEGMENT:
280 gst_event_unref (event);
284 ret = gst_pad_event_default (pad, event);
288 gst_object_unref (rmdemux);
293 gst_rmdemux_src_event (GstPad * pad, GstEvent * event)
297 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
299 GST_LOG_OBJECT (rmdemux, "handling src event");
301 switch (GST_EVENT_TYPE (event)) {
306 GST_LOG_OBJECT (rmdemux, "Event on src: SEEK");
307 /* can't seek if we are not seekable, FIXME could pass the
308 * seek query upstream after converting it to bytes using
309 * the average bitrate of the stream. */
310 if (!rmdemux->seekable) {
312 GST_DEBUG ("seek on non seekable stream");
316 GST_OBJECT_LOCK (rmdemux);
317 /* check if we can do the seek now */
318 running = rmdemux->running;
319 GST_OBJECT_UNLOCK (rmdemux);
321 /* now do the seek */
323 ret = gst_rmdemux_perform_seek (rmdemux, event);
327 gst_event_unref (event);
331 GST_LOG_OBJECT (rmdemux, "Event on src: type=%d", GST_EVENT_TYPE (event));
332 ret = gst_pad_event_default (pad, event);
339 GST_DEBUG ("error handling event");
340 gst_event_unref (event);
344 /* Validate that this looks like a reasonable point to seek to */
346 gst_rmdemux_validate_offset (GstRMDemux * rmdemux)
349 GstFlowReturn flowret;
350 guint16 version, length;
353 flowret = gst_pad_pull_range (rmdemux->sinkpad, rmdemux->offset, 4, &buffer);
355 if (flowret != GST_FLOW_OK) {
356 GST_DEBUG_OBJECT (rmdemux, "Failed to pull data at offset %d",
360 /* TODO: Can we also be seeking to a 'DATA' chunk header? Check this.
361 * Also, for the case we currently handle, can we check any more? It's pretty
362 * sucky to not be validating a little more heavily than this... */
363 /* This should now be the start of a data packet header. That begins with
364 * a 2-byte 'version' field, which has to be 0 or 1, then a length. I'm not
365 * certain what values are valid for length, but it must always be at least
366 * 4 bytes, and we can check that it won't take us past our known total size
369 version = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer));
370 if (version != 0 && version != 1) {
371 GST_DEBUG_OBJECT (rmdemux, "Expected version 0 or 1, got %d",
376 length = RMDEMUX_GUINT16_GET (GST_BUFFER_DATA (buffer) + 2);
377 /* TODO: Also check against total stream length */
379 GST_DEBUG_OBJECT (rmdemux, "Expected length >= 4, got %d", (int) length);
384 rmdemux->offset += 4;
385 gst_adapter_clear (rmdemux->adapter);
386 gst_adapter_push (rmdemux->adapter, buffer);
388 GST_WARNING_OBJECT (rmdemux, "Failed to validate seek offset at %d",
396 find_seek_offset_bytes (GstRMDemux * rmdemux, guint target)
400 gboolean ret = FALSE;
405 for (cur = rmdemux->streams; cur; cur = cur->next) {
406 GstRMDemuxStream *stream = cur->data;
408 /* Search backwards through this stream's index until we find the first
409 * timestamp before our target time */
410 for (i = stream->index_length - 1; i >= 0; i--) {
411 if (stream->index[i].offset <= target) {
412 /* Set the seek_offset for the stream so we don't bother parsing it
413 * until we've passed that point */
414 stream->seek_offset = stream->index[i].offset;
415 rmdemux->offset = stream->index[i].offset;
425 find_seek_offset_time (GstRMDemux * rmdemux, GstClockTime time)
428 gboolean ret = FALSE;
430 GstClockTime earliest = GST_CLOCK_TIME_NONE;
433 for (cur = rmdemux->streams; cur; cur = cur->next, n_stream++) {
434 GstRMDemuxStream *stream = cur->data;
436 /* Search backwards through this stream's index until we find the first
437 * timestamp before our target time */
438 for (i = stream->index_length - 1; i >= 0; i--) {
439 if (stream->index[i].timestamp <= time) {
440 /* Set the seek_offset for the stream so we don't bother parsing it
441 * until we've passed that point */
442 stream->seek_offset = stream->index[i].offset;
444 /* If it's also the earliest timestamp we've seen of all streams, then
447 if (earliest == GST_CLOCK_TIME_NONE ||
448 stream->index[i].timestamp < earliest) {
449 earliest = stream->index[i].timestamp;
450 rmdemux->offset = stream->index[i].offset;
451 GST_DEBUG_OBJECT (rmdemux,
452 "We're looking for %" GST_TIME_FORMAT
453 " and we found that stream %d has the latest index at %"
454 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start), n_stream,
455 GST_TIME_ARGS (earliest));
463 stream->discont = TRUE;
469 gst_rmdemux_perform_seek (GstRMDemux * rmdemux, GstEvent * event)
477 GstSeekType cur_type, stop_type;
482 GST_DEBUG_OBJECT (rmdemux, "seek with event");
484 gst_event_parse_seek (event, &rate, &format, &flags,
485 &cur_type, &cur, &stop_type, &stop);
487 /* we can only seek on time */
488 if (format != GST_FORMAT_TIME) {
489 GST_DEBUG_OBJECT (rmdemux, "can only seek on TIME");
492 /* cannot yet do backwards playback */
494 GST_DEBUG_OBJECT (rmdemux, "can only seek with positive rate, not %lf",
499 GST_DEBUG_OBJECT (rmdemux, "seek without event");
505 GST_DEBUG_OBJECT (rmdemux, "seek, rate %g", rate);
507 flush = flags & GST_SEEK_FLAG_FLUSH;
509 /* first step is to unlock the streaming thread if it is
510 * blocked in a chain call, we do this by starting the flush. */
512 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_start ());
513 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_start ());
515 gst_pad_pause_task (rmdemux->sinkpad);
518 GST_LOG_OBJECT (rmdemux, "Done starting flushes");
520 /* now grab the stream lock so that streaming cannot continue, for
521 * non flushing seeks when the element is in PAUSED this could block
523 GST_PAD_STREAM_LOCK (rmdemux->sinkpad);
525 GST_LOG_OBJECT (rmdemux, "Took streamlock");
527 /* close current segment first */
528 if (rmdemux->segment_running && !flush) {
531 newseg = gst_event_new_new_segment (TRUE, rmdemux->segment.rate,
532 GST_FORMAT_TIME, rmdemux->segment.start,
533 rmdemux->segment.last_stop, rmdemux->segment.time);
535 gst_rmdemux_send_event (rmdemux, newseg);
539 gst_segment_set_seek (&rmdemux->segment, rate, format, flags,
540 cur_type, cur, stop_type, stop, &update);
543 GST_DEBUG_OBJECT (rmdemux, "segment positions set to %" GST_TIME_FORMAT "-%"
544 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start),
545 GST_TIME_ARGS (rmdemux->segment.stop));
547 /* we need to stop flushing on the sinkpad as we're going to use it
548 * next. We can do this as we have the STREAM lock now. */
549 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop ());
551 GST_LOG_OBJECT (rmdemux, "Pushed FLUSH_STOP event");
553 /* For each stream, find the first index offset equal to or before our seek
554 * target. Of these, find the smallest offset. That's where we seek to.
556 * Then we pull 4 bytes from that offset, and validate that we've seeked to a
557 * what looks like a plausible packet.
558 * If that fails, restart, with the seek target set to one less than the
559 * offset we just tried. If we run out of places to try, treat that as a fatal
562 if (!find_seek_offset_time (rmdemux, rmdemux->segment.last_stop)) {
563 GST_LOG_OBJECT (rmdemux, "Failed to find seek offset by time");
568 GST_LOG_OBJECT (rmdemux, "Validating offset %u", rmdemux->offset);
569 validated = gst_rmdemux_validate_offset (rmdemux);
571 GST_INFO_OBJECT (rmdemux, "Failed to validate offset at %u",
573 if (!find_seek_offset_bytes (rmdemux, rmdemux->offset - 1)) {
577 validated = gst_rmdemux_validate_offset (rmdemux);
580 GST_LOG_OBJECT (rmdemux, "Found final offset. Excellent!");
582 /* now we have a new position, prepare for streaming again */
584 /* Reset the demuxer state */
585 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
588 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop ());
590 /* must send newsegment event from streaming thread, so just set flag */
591 rmdemux->need_newsegment = TRUE;
593 /* notify start of new segment */
594 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
595 gst_element_post_message (GST_ELEMENT_CAST (rmdemux),
596 gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
597 GST_FORMAT_TIME, rmdemux->segment.last_stop));
600 /* restart our task since it might have been stopped when we did the
602 gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
607 /* streaming can continue now */
608 GST_PAD_STREAM_UNLOCK (rmdemux->sinkpad);
614 GST_DEBUG_OBJECT (rmdemux, "seek failed");
621 gst_rmdemux_src_query (GstPad * pad, GstQuery * query)
623 gboolean res = FALSE;
626 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
628 switch (GST_QUERY_TYPE (query)) {
629 case GST_QUERY_POSITION:
630 GST_DEBUG_OBJECT (rmdemux, "Position query: no idea from demuxer!");
632 case GST_QUERY_DURATION:{
635 gst_query_parse_duration (query, &fmt, NULL);
636 if (fmt == GST_FORMAT_TIME) {
637 GST_OBJECT_LOCK (rmdemux);
638 if (G_LIKELY (rmdemux->running)) {
639 gst_query_set_duration (query, GST_FORMAT_TIME, rmdemux->duration);
640 GST_DEBUG_OBJECT (rmdemux, "duration set to %" GST_TIME_FORMAT,
641 GST_TIME_ARGS (rmdemux->duration));
644 GST_OBJECT_UNLOCK (rmdemux);
648 case GST_QUERY_SEEKING:{
651 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
652 if (fmt == GST_FORMAT_TIME) {
653 GST_OBJECT_LOCK (rmdemux);
654 if (G_LIKELY (rmdemux->running)) {
655 gst_query_set_seeking (query, GST_FORMAT_TIME, rmdemux->seekable,
656 0, rmdemux->duration);
659 GST_OBJECT_UNLOCK (rmdemux);
664 res = gst_pad_query_default (pad, query);
668 gst_object_unref (rmdemux);
672 static const GstQueryType *
673 gst_rmdemux_src_query_types (GstPad * pad)
675 static const GstQueryType query_types[] = {
686 gst_rmdemux_reset (GstRMDemux * rmdemux)
690 GST_OBJECT_LOCK (rmdemux);
691 rmdemux->running = FALSE;
692 GST_OBJECT_UNLOCK (rmdemux);
694 for (cur = rmdemux->streams; cur; cur = cur->next) {
695 GstRMDemuxStream *stream = cur->data;
697 g_object_unref (stream->adapter);
698 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
699 gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
700 if (stream->pending_tags)
701 gst_tag_list_free (stream->pending_tags);
702 if (stream->subpackets)
703 g_ptr_array_free (stream->subpackets, TRUE);
704 g_free (stream->index);
707 g_slist_free (rmdemux->streams);
708 rmdemux->streams = NULL;
709 rmdemux->n_audio_streams = 0;
710 rmdemux->n_video_streams = 0;
712 gst_adapter_clear (rmdemux->adapter);
713 rmdemux->state = RMDEMUX_STATE_HEADER;
714 rmdemux->have_pads = FALSE;
716 gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
717 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
718 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
719 rmdemux->need_newsegment = TRUE;
722 static GstStateChangeReturn
723 gst_rmdemux_change_state (GstElement * element, GstStateChange transition)
725 GstRMDemux *rmdemux = GST_RMDEMUX (element);
726 GstStateChangeReturn res;
728 switch (transition) {
729 case GST_STATE_CHANGE_NULL_TO_READY:
731 case GST_STATE_CHANGE_READY_TO_PAUSED:
732 rmdemux->state = RMDEMUX_STATE_HEADER;
733 rmdemux->have_pads = FALSE;
734 gst_segment_init (&rmdemux->segment, GST_FORMAT_TIME);
735 rmdemux->running = FALSE;
737 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
743 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
745 switch (transition) {
746 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
748 case GST_STATE_CHANGE_PAUSED_TO_READY:{
749 gst_rmdemux_reset (rmdemux);
752 case GST_STATE_CHANGE_READY_TO_NULL:
761 /* this function is called when the pad is activated and should start
764 * We check if we can do random access to decide if we work push or
768 gst_rmdemux_sink_activate (GstPad * sinkpad)
770 if (gst_pad_check_pull_range (sinkpad)) {
771 return gst_pad_activate_pull (sinkpad, TRUE);
773 return gst_pad_activate_push (sinkpad, TRUE);
777 /* this function gets called when we activate ourselves in push mode.
778 * We cannot seek (ourselves) in the stream */
780 gst_rmdemux_sink_activate_push (GstPad * pad, gboolean active)
784 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
786 GST_DEBUG_OBJECT (rmdemux, "activate_push");
788 rmdemux->seekable = FALSE;
793 /* this function gets called when we activate ourselves in pull mode.
794 * We can perform random access to the resource and we start a task
795 * to start reading */
797 gst_rmdemux_sink_activate_pull (GstPad * pad, gboolean active)
801 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
803 GST_DEBUG_OBJECT (rmdemux, "activate_pull");
806 rmdemux->seekable = TRUE;
808 rmdemux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
809 rmdemux->data_offset = G_MAXUINT;
811 return gst_pad_start_task (pad, (GstTaskFunction) gst_rmdemux_loop, pad);
813 return gst_pad_stop_task (pad);
817 /* random access mode - just pass over to our chain function */
819 gst_rmdemux_loop (GstPad * pad)
823 GstFlowReturn ret = GST_FLOW_OK;
826 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
828 GST_LOG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
829 rmdemux->loop_state, rmdemux->offset);
831 switch (rmdemux->state) {
832 case RMDEMUX_STATE_HEADER:
835 case RMDEMUX_STATE_HEADER_DATA:
838 case RMDEMUX_STATE_DATA_PACKET:
839 size = rmdemux->avg_packet_size;
841 case RMDEMUX_STATE_EOS:
842 GST_LOG_OBJECT (rmdemux, "At EOS, pausing task");
843 ret = GST_FLOW_UNEXPECTED;
846 GST_LOG_OBJECT (rmdemux, "Default: requires %d bytes (state is %d)",
847 (int) rmdemux->size, rmdemux->state);
848 size = rmdemux->size;
851 ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
852 if (ret != GST_FLOW_OK) {
853 if (rmdemux->offset == rmdemux->index_offset) {
854 /* The index isn't available so forget about it */
855 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
856 rmdemux->offset = rmdemux->data_offset;
857 GST_OBJECT_LOCK (rmdemux);
858 rmdemux->running = TRUE;
859 rmdemux->seekable = FALSE;
860 GST_OBJECT_UNLOCK (rmdemux);
863 GST_DEBUG_OBJECT (rmdemux, "Unable to pull %d bytes at offset 0x%08x "
864 "(pull_range returned flow %s, state is %d)", (gint) size,
865 rmdemux->offset, gst_flow_get_name (ret), GST_STATE (rmdemux));
870 size = GST_BUFFER_SIZE (buffer);
872 /* Defer to the chain function */
873 ret = gst_rmdemux_chain (pad, buffer);
874 if (ret != GST_FLOW_OK) {
875 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
880 rmdemux->offset += size;
882 switch (rmdemux->loop_state) {
883 case RMDEMUX_LOOP_STATE_HEADER:
884 if (rmdemux->offset >= rmdemux->data_offset) {
885 /* It's the end of the header */
886 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
887 rmdemux->offset = rmdemux->index_offset;
890 case RMDEMUX_LOOP_STATE_INDEX:
891 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
892 if (rmdemux->index_offset == 0) {
893 /* We've read the last index */
894 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
895 rmdemux->offset = rmdemux->data_offset;
896 GST_OBJECT_LOCK (rmdemux);
897 rmdemux->running = TRUE;
898 GST_OBJECT_UNLOCK (rmdemux);
900 /* Get the next index */
901 rmdemux->offset = rmdemux->index_offset;
905 case RMDEMUX_LOOP_STATE_DATA:
914 const gchar *reason = gst_flow_get_name (ret);
916 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
917 rmdemux->segment_running = FALSE;
918 gst_pad_pause_task (rmdemux->sinkpad);
920 if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
921 if (ret == GST_FLOW_UNEXPECTED) {
922 /* perform EOS logic */
923 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
926 /* for segment playback we need to post when (in stream time)
927 * we stopped, this is either stop (when set) or the duration. */
928 if ((stop = rmdemux->segment.stop) == -1)
929 stop = rmdemux->segment.duration;
931 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
932 gst_element_post_message (GST_ELEMENT (rmdemux),
933 gst_message_new_segment_done (GST_OBJECT (rmdemux),
934 GST_FORMAT_TIME, stop));
936 /* normal playback, send EOS to all linked pads */
937 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
938 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
941 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
942 (NULL), ("stream stopped, reason %s", reason));
943 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
951 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
955 for (i = 0; i < 4; i++) {
956 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
964 gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer)
966 GstFlowReturn ret = GST_FLOW_OK;
971 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
973 if (rmdemux->base_ts == -1) {
974 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
975 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
976 GST_TIME_ARGS (rmdemux->base_ts));
979 gst_adapter_push (rmdemux->adapter, buffer);
981 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %d",
982 GST_BUFFER_SIZE (buffer));
985 avail = gst_adapter_available (rmdemux->adapter);
987 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
988 switch (rmdemux->state) {
989 case RMDEMUX_STATE_HEADER:
991 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
994 data = gst_adapter_peek (rmdemux->adapter, HEADER_SIZE);
996 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
997 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
998 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
1000 /* Sanity-check. We assume that the FOURCC is printable ASCII */
1001 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
1002 /* Failed. Remain in HEADER state, try again... We flush only
1003 * the actual FOURCC, not the entire header, because we could
1004 * need to resync anywhere at all... really, this should never
1006 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
1008 gst_adapter_flush (rmdemux->adapter, 4);
1013 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1015 " size=%08x object_version=%d",
1016 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1017 rmdemux->object_version);
1019 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1021 switch (rmdemux->object_id) {
1022 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1023 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1025 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1026 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1028 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1029 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1031 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1032 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1034 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1035 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1037 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1038 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1041 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1046 case RMDEMUX_STATE_HEADER_UNKNOWN:
1048 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1051 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1052 GST_FOURCC_ARGS (rmdemux->object_id));
1054 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1055 rmdemux->state = RMDEMUX_STATE_HEADER;
1058 case RMDEMUX_STATE_HEADER_RMF:
1060 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1063 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1064 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1066 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1069 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1070 rmdemux->state = RMDEMUX_STATE_HEADER;
1073 case RMDEMUX_STATE_HEADER_PROP:
1075 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1077 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1079 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1081 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1082 rmdemux->state = RMDEMUX_STATE_HEADER;
1085 case RMDEMUX_STATE_HEADER_MDPR:
1087 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1089 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1091 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1093 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1094 rmdemux->state = RMDEMUX_STATE_HEADER;
1097 case RMDEMUX_STATE_HEADER_CONT:
1099 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1101 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1103 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1105 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1106 rmdemux->state = RMDEMUX_STATE_HEADER;
1109 case RMDEMUX_STATE_HEADER_DATA:
1111 /* If we haven't already done so then signal there are no more pads */
1112 if (!rmdemux->have_pads) {
1113 GST_LOG_OBJECT (rmdemux, "no more pads");
1114 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1115 rmdemux->have_pads = TRUE;
1118 /* The actual header is only 8 bytes */
1119 rmdemux->size = DATA_SIZE;
1120 GST_LOG_OBJECT (rmdemux, "data available %d",
1121 gst_adapter_available (rmdemux->adapter));
1122 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1125 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1127 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1129 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1131 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1134 case RMDEMUX_STATE_HEADER_INDX:
1136 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1138 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1140 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1142 /* Only flush the header */
1143 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1145 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1148 case RMDEMUX_STATE_INDX_DATA:
1150 /* There's not always an data to get... */
1151 if (rmdemux->size > 0) {
1152 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1155 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1157 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1159 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1162 rmdemux->state = RMDEMUX_STATE_HEADER;
1165 case RMDEMUX_STATE_DATA_PACKET:
1167 if (gst_adapter_available (rmdemux->adapter) < 2)
1170 data = gst_adapter_peek (rmdemux->adapter, 2);
1171 version = RMDEMUX_GUINT16_GET (data);
1172 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1174 if (version == 0 || version == 1) {
1177 if (gst_adapter_available (rmdemux->adapter) < 4)
1179 data = gst_adapter_peek (rmdemux->adapter, 4);
1181 length = RMDEMUX_GUINT16_GET (data + 2);
1182 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1185 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1186 /* Invalid, just drop it */
1187 gst_adapter_flush (rmdemux->adapter, 4);
1191 avail = gst_adapter_available (rmdemux->adapter);
1195 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1198 /* flush version and length */
1199 gst_adapter_flush (rmdemux->adapter, 4);
1202 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1204 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1205 rmdemux->chunk_index++;
1208 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1209 rmdemux->state = RMDEMUX_STATE_HEADER;
1212 gst_adapter_flush (rmdemux->adapter, 2);
1214 if (rmdemux->data_offset == 0) {
1215 GST_LOG_OBJECT (rmdemux,
1216 "No further data, internal demux state EOS");
1217 rmdemux->state = RMDEMUX_STATE_EOS;
1219 rmdemux->state = RMDEMUX_STATE_HEADER;
1223 case RMDEMUX_STATE_EOS:
1224 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1227 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1236 static GstRMDemuxStream *
1237 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1241 for (cur = rmdemux->streams; cur; cur = cur->next) {
1242 GstRMDemuxStream *stream = cur->data;
1244 if (stream->id == id) {
1253 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1257 for (cur = rmdemux->streams; cur; cur = cur->next) {
1258 GstRMDemuxStream *stream = cur->data;
1260 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1261 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1263 switch (GST_EVENT_TYPE (event)) {
1264 case GST_EVENT_FLUSH_STOP:
1265 stream->last_ts = -1;
1266 stream->next_ts = -1;
1267 stream->last_seq = -1;
1268 stream->next_seq = -1;
1269 stream->last_flow = GST_FLOW_OK;
1274 gst_event_ref (event);
1275 gst_pad_push_event (stream->pad, event);
1277 gst_event_unref (event);
1281 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1283 GstCaps *stream_caps = NULL;
1284 const gchar *codec_tag = NULL;
1285 const gchar *codec_name = NULL;
1288 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1289 char *name = g_strdup_printf ("video_%02d", rmdemux->n_video_streams);
1292 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1295 codec_tag = GST_TAG_VIDEO_CODEC;
1297 switch (stream->fourcc) {
1298 case GST_RM_VDO_RV10:
1299 codec_name = "Real Video 1.0";
1302 case GST_RM_VDO_RV20:
1303 codec_name = "Real Video 2.0";
1306 case GST_RM_VDO_RV30:
1307 codec_name = "Real Video 3.0";
1310 case GST_RM_VDO_RV40:
1311 codec_name = "Real Video 4.0";
1315 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1316 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1317 GST_WARNING_OBJECT (rmdemux,
1318 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1319 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1324 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1326 "format", G_TYPE_INT,
1327 (int) stream->format,
1328 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1332 gst_caps_set_simple (stream_caps,
1333 "width", G_TYPE_INT, stream->width,
1334 "height", G_TYPE_INT, stream->height,
1335 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1336 stream->framerate_denominator, NULL);
1338 rmdemux->n_video_streams++;
1340 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1341 char *name = g_strdup_printf ("audio_%02d", rmdemux->n_audio_streams);
1344 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1345 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1348 codec_tag = GST_TAG_AUDIO_CODEC;
1350 switch (stream->fourcc) {
1351 /* Older RealAudio Codecs */
1352 case GST_RM_AUD_14_4:
1353 codec_name = "Real Audio 14.4kbps";
1357 case GST_RM_AUD_28_8:
1358 codec_name = "Real Audio 28.8kbps";
1362 /* DolbyNet (Dolby AC3, low bitrate) */
1363 case GST_RM_AUD_DNET:
1364 codec_name = "AC-3 audio";
1366 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1367 (int) stream->rate, NULL);
1368 stream->needs_descrambling = TRUE;
1369 stream->subpackets_needed = 1;
1370 stream->subpackets = NULL;
1374 case GST_RM_AUD_RAAC:
1375 case GST_RM_AUD_RACP:
1376 codec_name = "MPEG4 audio";
1378 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1379 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1380 if (stream->extra_data_size > 0) {
1381 /* strip off an unknown byte in the extra data */
1382 stream->extra_data_size--;
1383 stream->extra_data++;
1385 stream->needs_descrambling = TRUE;
1386 stream->subpackets_needed = 1;
1387 stream->subpackets = NULL;
1391 case GST_RM_AUD_ATRC:
1392 codec_name = "Sony ATRAC3";
1393 stream_caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
1394 stream->needs_descrambling = TRUE;
1395 stream->subpackets_needed = stream->height;
1396 stream->subpackets = NULL;
1399 /* RealAudio G2 audio */
1400 case GST_RM_AUD_COOK:
1401 codec_name = "Real Audio G2 (Cook)";
1403 stream->needs_descrambling = TRUE;
1404 stream->subpackets_needed = stream->height;
1405 stream->subpackets = NULL;
1408 /* RALF is lossless */
1409 case GST_RM_AUD_RALF:
1410 codec_name = "Real Audio Lossless (RALF)";
1411 GST_DEBUG_OBJECT (rmdemux, "RALF");
1412 stream_caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
1415 case GST_RM_AUD_SIPR:
1417 if (stream->flavor > 3) {
1418 GST_WARNING_OBJECT (rmdemux, "bad SIPR flavor %d, freeing it",
1424 codec_name = "Sipro/ACELP.NET Voice";
1425 GST_DEBUG_OBJECT (rmdemux, "SIPR");
1426 stream_caps = gst_caps_new_simple ("audio/x-sipro", NULL);
1427 stream->needs_descrambling = TRUE;
1428 stream->subpackets_needed = stream->height;
1429 stream->subpackets = NULL;
1430 stream->leaf_size = sipr_subpk_size[stream->flavor];
1435 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1436 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1437 GST_WARNING_OBJECT (rmdemux,
1438 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1439 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1445 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1446 (int) version, NULL);
1450 gst_caps_set_simple (stream_caps,
1451 "flavor", G_TYPE_INT, (int) stream->flavor,
1452 "rate", G_TYPE_INT, (int) stream->rate,
1453 "channels", G_TYPE_INT, (int) stream->n_channels,
1454 "width", G_TYPE_INT, (int) stream->sample_width,
1455 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1456 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1457 "height", G_TYPE_INT, (int) stream->height, NULL);
1459 rmdemux->n_audio_streams++;
1461 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1467 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1468 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1469 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1470 g_slist_length (rmdemux->streams));
1472 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1475 if (stream->pad && stream_caps) {
1477 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1478 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1480 /* add codec_data if there is any */
1481 if (stream->extra_data_size > 0) {
1484 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1485 memcpy (GST_BUFFER_DATA (buffer), stream->extra_data,
1486 stream->extra_data_size);
1488 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1491 gst_buffer_unref (buffer);
1494 gst_pad_use_fixed_caps (stream->pad);
1496 gst_pad_set_caps (stream->pad, stream_caps);
1497 gst_pad_set_event_function (stream->pad,
1498 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1499 gst_pad_set_query_type_function (stream->pad,
1500 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query_types));
1501 gst_pad_set_query_function (stream->pad,
1502 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1504 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1505 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1506 gst_pad_set_active (stream->pad, TRUE);
1507 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1509 /* save for later, we must send the tags after the newsegment event */
1510 if (codec_name != NULL && codec_tag != NULL) {
1511 if (stream->pending_tags == NULL)
1512 stream->pending_tags = gst_tag_list_new ();
1513 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1514 codec_tag, codec_name, NULL);
1521 gst_caps_unref (stream_caps);
1525 re_skip_pascal_string (const guint8 * ptr)
1535 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1537 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1538 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1542 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1544 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1545 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1546 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1547 RMDEMUX_GUINT32_GET (data + 8));
1548 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1549 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1550 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1551 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1553 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1554 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1556 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1557 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1558 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1559 rmdemux->index_offset);
1560 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1561 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1562 rmdemux->data_offset);
1563 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1564 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1568 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1570 GstRMDemuxStream *stream;
1571 char *stream1_type_string;
1572 char *stream2_type_string;
1576 guint32 max_bitrate;
1577 guint32 avg_bitrate;
1579 stream = g_new0 (GstRMDemuxStream, 1);
1581 stream->id = RMDEMUX_GUINT16_GET (data);
1582 stream->index = NULL;
1583 stream->seek_offset = 0;
1584 stream->last_ts = -1;
1585 stream->next_ts = -1;
1586 stream->last_flow = GST_FLOW_OK;
1587 stream->discont = TRUE;
1588 stream->adapter = gst_adapter_new ();
1589 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1591 /* parse the bitrates */
1592 max_bitrate = RMDEMUX_GUINT32_GET (data + 2);
1593 avg_bitrate = RMDEMUX_GUINT32_GET (data + 6);
1594 GST_LOG_OBJECT (rmdemux, "Stream max bitrate=%u", max_bitrate);
1595 GST_LOG_OBJECT (rmdemux, "Stream avg bitrate=%u", avg_bitrate);
1596 if (max_bitrate != 0) {
1597 if (stream->pending_tags == NULL)
1598 stream->pending_tags = gst_tag_list_new ();
1599 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1600 GST_TAG_MAXIMUM_BITRATE, max_bitrate, NULL);
1602 if (avg_bitrate != 0) {
1603 if (stream->pending_tags == NULL)
1604 stream->pending_tags = gst_tag_list_new ();
1605 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_REPLACE,
1606 GST_TAG_BITRATE, avg_bitrate, NULL);
1610 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1611 length - offset, &str_len);
1613 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1614 length - offset, &str_len);
1617 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1619 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1620 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1622 * so, we should not rely on it to know which stream type it is
1625 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1626 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1628 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1629 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1630 } else if (strcmp (stream2_type_string,
1631 "video/x-pn-multirate-realvideo") == 0) {
1632 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1633 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1634 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1635 } else if (strcmp (stream2_type_string,
1636 "audio/x-pn-multirate-realaudio") == 0) {
1637 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1638 } else if (strcmp (stream2_type_string,
1639 "audio/x-pn-multirate-realaudio-live") == 0) {
1640 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1641 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1642 /* Another audio type found in the real testsuite */
1643 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1644 } else if (strcmp (stream1_type_string, "") == 0 &&
1645 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1646 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1648 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1649 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1650 stream1_type_string, stream2_type_string);
1652 g_free (stream1_type_string);
1653 g_free (stream2_type_string);
1657 stream->subtype = stream_type;
1658 switch (stream_type) {
1660 case GST_RMDEMUX_STREAM_VIDEO:
1661 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1662 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1663 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1664 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1665 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1666 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1667 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1668 stream->extra_data_size = length - (offset + 26);
1669 stream->extra_data = (guint8 *) data + offset + 26;
1670 /* Natural way to represent framerates here requires unsigned 32 bit
1671 * numerator, which we don't have. For the nasty case, approximate...
1674 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1675 RMDEMUX_GUINT16_GET (data + offset + 24);
1676 if (numerator > G_MAXINT) {
1677 stream->framerate_numerator = (gint) (numerator >> 1);
1678 stream->framerate_denominator = 32768;
1680 stream->framerate_numerator = (gint) numerator;
1681 stream->framerate_denominator = 65536;
1685 GST_DEBUG_OBJECT (rmdemux,
1686 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1687 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1688 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1689 stream->rate, stream->framerate_numerator,
1690 stream->framerate_denominator, stream->subformat, stream->format,
1691 stream->extra_data_size);
1693 case GST_RMDEMUX_STREAM_AUDIO:{
1694 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1695 GST_INFO ("stream version = %u", stream->version);
1696 switch (stream->version) {
1698 stream->fourcc = GST_RM_AUD_14_4;
1699 stream->packet_size = 20;
1700 stream->rate = 8000;
1701 stream->n_channels = 1;
1702 stream->sample_width = 16;
1704 stream->leaf_size = 0;
1708 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1709 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1710 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1711 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1712 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1713 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1714 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1715 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1716 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1717 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1718 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1719 stream->extra_data_size);
1720 if (length - (offset + 73) >= stream->extra_data_size) {
1721 stream->extra_data = (guint8 *) data + offset + 73;
1723 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1724 stream->extra_data_size = 0;
1728 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1729 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1730 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1731 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1732 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1733 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1734 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1735 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1736 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1737 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1738 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1739 stream->extra_data_size);
1740 if (length - (offset + 78) >= stream->extra_data_size) {
1741 stream->extra_data = (guint8 *) data + offset + 78;
1743 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1744 stream->extra_data_size = 0;
1748 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1753 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1754 GST_DEBUG_OBJECT (rmdemux,
1755 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1756 stream->rate, stream->sample_width, stream->n_channels);
1760 case GST_RMDEMUX_STREAM_FILEINFO:
1764 /* Length of this section */
1765 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1766 RMDEMUX_GUINT32_GET (data + offset));
1769 /* Unknown : 00 00 00 00 */
1772 /* Number of variables that would follow (loop iterations) */
1773 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1776 while (element_nb) {
1777 /* Category Id : 00 00 00 XX 00 00 */
1781 offset += re_skip_pascal_string (data + offset);
1783 /* Variable Value Type */
1784 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1785 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1788 /* Variable Value */
1789 offset += re_skip_pascal_string (data + offset);
1795 case GST_RMDEMUX_STREAM_UNKNOWN:
1800 gst_rmdemux_add_stream (rmdemux, stream);
1804 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1809 n = RMDEMUX_GUINT32_GET (data);
1810 id = RMDEMUX_GUINT16_GET (data + 4);
1811 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1813 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1816 /* Point to the next index_stream */
1817 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1819 /* Return the length of the index */
1824 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1829 GstRMDemuxIndex *index;
1831 /* The number of index records */
1834 if (rmdemux->index_stream == NULL)
1837 /* don't parse the index a second time when operating pull-based and
1838 * reaching the end of the file */
1839 if (rmdemux->index_stream->index_length > 0) {
1840 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1844 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1845 rmdemux->index_stream->index = index;
1846 rmdemux->index_stream->index_length = n;
1848 for (i = 0; i < n; i++) {
1849 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1850 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1852 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1853 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1860 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1862 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1863 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1864 rmdemux->chunk_index = 0;
1865 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1866 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1870 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1874 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1876 gst_element_found_tags (GST_ELEMENT (rmdemux), tags);
1880 static GstFlowReturn
1881 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1886 /* store the value */
1887 stream->last_flow = ret;
1889 /* if it's success we can return the value right away */
1890 if (GST_FLOW_IS_SUCCESS (ret))
1893 /* any other error that is not-linked can be returned right
1895 if (ret != GST_FLOW_NOT_LINKED)
1898 for (cur = rmdemux->streams; cur; cur = cur->next) {
1899 GstRMDemuxStream *ostream = cur->data;
1901 ret = ostream->last_flow;
1902 /* some other return value (must be SUCCESS but we can return
1903 * other values as well) */
1904 if (ret != GST_FLOW_NOT_LINKED)
1907 /* if we get here, all other pads were unlinked and we return
1908 * NOT_LINKED then */
1914 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1915 GstRMDemuxStream * stream)
1917 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1920 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1921 stream->subpackets->len);
1922 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1923 g_ptr_array_set_size (stream->subpackets, 0);
1926 static GstFlowReturn
1927 gst_rmdemux_descramble_audio (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1931 guint packet_size = stream->packet_size;
1932 guint height = stream->subpackets->len;
1933 guint leaf_size = stream->leaf_size;
1936 g_assert (stream->height == height);
1938 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1941 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
1942 GST_BUFFER_OFFSET_NONE, height * packet_size,
1943 GST_PAD_CAPS (stream->pad), &outbuf);
1945 if (ret != GST_FLOW_OK)
1948 for (p = 0; p < height; ++p) {
1949 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1950 guint8 *b_data = GST_BUFFER_DATA (b);
1953 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1955 for (x = 0; x < packet_size / leaf_size; ++x) {
1958 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1959 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1960 memcpy (GST_BUFFER_DATA (outbuf) + leaf_size * idx, b_data, leaf_size);
1961 b_data += leaf_size;
1965 /* some decoders, such as realaudiodec, need to be fed in packet units */
1966 for (p = 0; p < height; ++p) {
1969 subbuf = gst_buffer_create_sub (outbuf, p * packet_size, packet_size);
1971 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1972 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1974 if (stream->discont) {
1975 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1976 stream->discont = FALSE;
1979 gst_buffer_set_caps (subbuf, GST_PAD_CAPS (stream->pad));
1980 ret = gst_pad_push (stream->pad, subbuf);
1981 if (ret != GST_FLOW_OK)
1985 gst_buffer_unref (outbuf);
1989 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1994 static GstFlowReturn
1995 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1996 GstRMDemuxStream * stream)
2000 buf = g_ptr_array_index (stream->subpackets, 0);
2001 g_ptr_array_index (stream->subpackets, 0) = NULL;
2002 g_ptr_array_set_size (stream->subpackets, 0);
2004 buf = gst_rm_utils_descramble_dnet_buffer (buf);
2006 if (stream->discont) {
2007 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2008 stream->discont = FALSE;
2010 return gst_pad_push (stream->pad, buf);
2013 static GstFlowReturn
2014 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
2015 GstRMDemuxStream * stream)
2018 GstBuffer *buf, *outbuf;
2019 guint frames, index, i;
2021 GstClockTime timestamp;
2025 buf = g_ptr_array_index (stream->subpackets, 0);
2026 g_ptr_array_index (stream->subpackets, 0) = NULL;
2027 g_ptr_array_set_size (stream->subpackets, 0);
2029 data = GST_BUFFER_DATA (buf);
2030 timestamp = GST_BUFFER_TIMESTAMP (buf);
2032 frames = (data[1] & 0xf0) >> 4;
2033 index = 2 * frames + 2;
2035 for (i = 0; i < frames; i++) {
2036 guint len = (data[i * 2 + 2] << 8) | data[i * 2 + 3];
2038 outbuf = gst_buffer_create_sub (buf, index, len);
2040 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2041 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2045 if (stream->discont) {
2046 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2047 stream->discont = FALSE;
2049 res = gst_pad_push (stream->pad, outbuf);
2050 if (res != GST_FLOW_OK)
2053 gst_buffer_unref (buf);
2057 static GstFlowReturn
2058 gst_rmdemux_descramble_sipr_audio (GstRMDemux * rmdemux,
2059 GstRMDemuxStream * stream)
2063 guint packet_size = stream->packet_size;
2064 guint height = stream->subpackets->len;
2065 guint leaf_size = stream->leaf_size;
2068 g_assert (stream->height == height);
2070 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
2073 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
2074 GST_BUFFER_OFFSET_NONE, height * packet_size,
2075 GST_PAD_CAPS (stream->pad), &outbuf);
2077 if (ret != GST_FLOW_OK)
2080 for (p = 0; p < height; ++p) {
2081 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
2082 guint8 *b_data = GST_BUFFER_DATA (b);
2085 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
2087 memcpy (GST_BUFFER_DATA (outbuf) + packet_size * p, b_data, packet_size);
2090 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
2091 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
2093 if (stream->discont) {
2094 GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
2095 stream->discont = FALSE;
2098 outbuf = gst_rm_utils_descramble_sipr_buffer (outbuf);
2100 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2101 ret = gst_pad_push (stream->pad, outbuf);
2105 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2110 static GstFlowReturn
2111 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2112 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2116 if (stream->subpackets == NULL)
2117 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2119 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
2120 stream->subpackets_needed, GST_BUFFER_SIZE (buf), keyframe);
2122 if (keyframe && stream->subpackets->len > 0) {
2123 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2126 g_ptr_array_add (stream->subpackets, buf);
2128 if (stream->subpackets->len < stream->subpackets_needed)
2131 g_assert (stream->subpackets->len >= 1);
2133 switch (stream->fourcc) {
2134 case GST_RM_AUD_DNET:
2135 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2137 case GST_RM_AUD_COOK:
2138 case GST_RM_AUD_ATRC:
2139 ret = gst_rmdemux_descramble_audio (rmdemux, stream);
2141 case GST_RM_AUD_RAAC:
2142 case GST_RM_AUD_RACP:
2143 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2145 case GST_RM_AUD_SIPR:
2146 ret = gst_rmdemux_descramble_sipr_audio (rmdemux, stream);
2149 g_assert_not_reached ();
2156 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2157 guint8 * data, GstClockTime timestamp)
2161 GstClockTime ts = timestamp;
2163 if (timestamp == GST_CLOCK_TIME_NONE)
2166 /* only adjust when we have a stream with B frames */
2167 if (stream->format < 0x20200002)
2170 /* Fix timestamp. */
2171 switch (stream->fourcc) {
2172 case GST_RM_VDO_RV10:
2174 case GST_RM_VDO_RV20:
2177 * Bit 1- 2: frame type
2179 * Bit 10-22: sequence number
2182 frame_type = (data[0] >> 6) & 0x03;
2183 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2186 case GST_RM_VDO_RV30:
2190 * Bit 3: skip packet if 1
2191 * Bit 4- 5: frame type
2193 * Bit 13-25: sequence number
2196 frame_type = (data[0] >> 3) & 0x03;
2197 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2200 case GST_RM_VDO_RV40:
2203 * Bit 1: skip packet if 1
2204 * Bit 2- 3: frame type
2206 * Bit 14-26: sequence number
2209 frame_type = (data[0] >> 5) & 0x03;
2210 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2214 goto unknown_version;
2217 switch (frame_type) {
2221 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2223 if (stream->next_ts == -1)
2224 stream->next_ts = timestamp;
2226 timestamp = stream->next_ts;
2227 stream->last_ts = stream->next_ts;
2228 stream->next_ts = ts;
2229 stream->last_seq = stream->next_seq;
2230 stream->next_seq = seq;
2235 GST_LOG_OBJECT (rmdemux, "P frame");
2237 timestamp = stream->last_ts = stream->next_ts;
2238 if (seq < stream->next_seq)
2239 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2241 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2242 stream->last_seq = stream->next_seq;
2243 stream->next_seq = seq;
2248 GST_LOG_OBJECT (rmdemux, "B frame");
2250 if (seq < stream->last_seq) {
2252 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2254 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2259 goto unknown_frame_type;
2263 GST_LOG_OBJECT (rmdemux,
2264 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2265 GST_TIME_ARGS (timestamp));
2272 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2273 ("Unknown version: %i.", stream->version), (NULL));
2274 return GST_FLOW_ERROR;
2279 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2280 frame_type), (NULL));
2281 return GST_FLOW_ERROR;
2285 #define PARSE_NUMBER(data, size, number, label) \
2289 number = GST_READ_UINT16_BE (data); \
2290 if (!(number & 0xc000)) { \
2293 number = GST_READ_UINT32_BE (data); \
2303 static GstFlowReturn
2304 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2305 GstBuffer * in, guint offset, guint16 version,
2306 GstClockTime timestamp, gboolean key)
2309 const guint8 *data, *base;
2312 base = GST_BUFFER_DATA (in);
2313 data = base + offset;
2314 size = GST_BUFFER_SIZE (in) - offset;
2315 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2316 * was previously for that given stream. */
2317 ret = stream->last_flow;
2323 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2324 guint fragment_size;
2325 GstBuffer *fragment;
2327 pkg_header = *data++;
2331 * bit 7: 1=last block in block chain
2332 * bit 6: 1=short header (only one block?)
2334 if ((pkg_header & 0xc0) == 0x40) {
2335 /* skip unknown byte */
2341 if ((pkg_header & 0x40) == 0) {
2342 pkg_subseq = (*data++) & 0x7f;
2349 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2352 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2356 goto not_enough_data;
2358 pkg_seqnum = *data++;
2362 GST_DEBUG_OBJECT (rmdemux,
2363 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2364 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2366 /* calc size of fragment */
2367 if ((pkg_header & 0xc0) == 0x80) {
2368 fragment_size = pkg_offset;
2370 if ((pkg_header & 0xc0) == 0)
2371 fragment_size = size;
2373 fragment_size = pkg_length;
2375 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2377 /* get the fragment */
2378 fragment = gst_buffer_create_sub (in, data - base, fragment_size);
2380 if (pkg_subseq == 1) {
2381 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2382 gst_adapter_clear (stream->adapter);
2383 stream->frag_current = 0;
2384 stream->frag_count = 0;
2385 stream->frag_length = pkg_length;
2386 } else if (pkg_subseq == 0) {
2387 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2388 stream->frag_current = 0;
2389 stream->frag_count = 0;
2390 stream->frag_length = fragment_size;
2393 /* put fragment in adapter */
2394 gst_adapter_push (stream->adapter, fragment);
2395 stream->frag_offset[stream->frag_count] = stream->frag_current;
2396 stream->frag_current += fragment_size;
2397 stream->frag_count++;
2399 if (stream->frag_count > MAX_FRAGS)
2400 goto too_many_fragments;
2402 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2403 stream->frag_current, stream->frag_length);
2405 /* flush fragment when complete */
2406 if (stream->frag_current >= stream->frag_length) {
2412 /* calculate header size, which is:
2413 * 1 byte for the number of fragments - 1
2414 * for each fragment:
2415 * 4 bytes 0x00000001 little endian
2416 * 4 bytes fragment offset
2418 * This is also the matroska header for realvideo, the decoder needs the
2419 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2420 * in front of the data.
2422 header_size = 1 + (8 * (stream->frag_count));
2424 GST_DEBUG_OBJECT (rmdemux,
2425 "fragmented completed. count %d, header_size %u", stream->frag_count,
2428 avail = gst_adapter_available (stream->adapter);
2430 out = gst_buffer_new_and_alloc (header_size + avail);
2431 outdata = GST_BUFFER_DATA (out);
2434 *outdata++ = stream->frag_count - 1;
2435 for (i = 0; i < stream->frag_count; i++) {
2436 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2438 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2442 /* copy packet data after the header now */
2443 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2444 gst_adapter_flush (stream->adapter, avail);
2446 stream->frag_current = 0;
2447 stream->frag_count = 0;
2448 stream->frag_length = 0;
2450 gst_buffer_set_caps (out, GST_PAD_CAPS (stream->pad));
2452 if (timestamp != -1) {
2453 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2454 timestamp -= rmdemux->first_ts;
2458 if (rmdemux->base_ts != -1)
2459 timestamp += rmdemux->base_ts;
2462 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2464 GST_BUFFER_TIMESTAMP (out) = timestamp;
2466 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2467 GST_TIME_ARGS (timestamp));
2469 if (stream->discont) {
2470 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2471 stream->discont = FALSE;
2474 ret = gst_pad_push (stream->pad, out);
2475 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2476 if (ret != GST_FLOW_OK)
2479 timestamp = GST_CLOCK_TIME_NONE;
2481 data += fragment_size;
2482 size -= fragment_size;
2484 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2486 gst_buffer_unref (in);
2493 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2495 gst_buffer_unref (in);
2500 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2501 ("Got more fragments (%u) than can be handled (%u)",
2502 stream->frag_count, MAX_FRAGS), (NULL));
2503 gst_buffer_unref (in);
2504 return GST_FLOW_ERROR;
2508 static GstFlowReturn
2509 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2510 GstBuffer * in, guint offset, guint16 version,
2511 GstClockTime timestamp, gboolean key)
2513 GstFlowReturn ret, cret;
2518 data = GST_BUFFER_DATA (in) + offset;
2519 size = GST_BUFFER_SIZE (in) - offset;
2521 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
2522 GST_BUFFER_OFFSET_NONE, size, GST_PAD_CAPS (stream->pad), &buffer);
2524 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2525 if (ret != GST_FLOW_OK)
2528 memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, size);
2530 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2531 timestamp -= rmdemux->first_ts;
2535 if (rmdemux->base_ts != -1)
2536 timestamp += rmdemux->base_ts;
2538 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2540 if (stream->needs_descrambling) {
2541 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2542 GST_TIME_ARGS (timestamp));
2543 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2545 GST_LOG_OBJECT (rmdemux,
2546 "Pushing buffer of size %d, timestamp %" GST_TIME_FORMAT "to pad %s",
2547 GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (timestamp),
2548 GST_PAD_NAME (stream->pad));
2550 if (stream->discont) {
2551 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2552 stream->discont = FALSE;
2554 ret = gst_pad_push (stream->pad, buffer);
2557 gst_buffer_unref (in);
2564 GST_DEBUG_OBJECT (rmdemux, "pad alloc returned %d", ret);
2565 gst_buffer_unref (in);
2570 static GstFlowReturn
2571 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2574 GstRMDemuxStream *stream;
2576 GstFlowReturn cret, ret;
2577 GstClockTime timestamp;
2579 guint8 *data, *base;
2583 base = data = GST_BUFFER_DATA (in);
2584 size = GST_BUFFER_SIZE (in);
2587 id = RMDEMUX_GUINT16_GET (data);
2589 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2590 if (!stream || !stream->pad)
2591 goto unknown_stream;
2593 /* timestamp in Msec */
2594 ts = RMDEMUX_GUINT32_GET (data + 2);
2595 timestamp = ts * GST_MSECOND;
2597 gst_segment_set_last_stop (&rmdemux->segment, GST_FORMAT_TIME, timestamp);
2599 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2600 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2601 GST_TIME_ARGS (timestamp), size, version, ts);
2603 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2604 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2605 GST_TIME_ARGS (timestamp));
2606 rmdemux->first_ts = timestamp;
2609 /* skip stream_id and timestamp */
2614 flags = GST_READ_UINT8 (data + 1);
2619 /* version 1 has an extra byte */
2624 key = (flags & 0x02) != 0;
2625 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2627 if (rmdemux->need_newsegment) {
2630 event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
2631 rmdemux->segment.format, rmdemux->segment.start,
2632 rmdemux->segment.stop, rmdemux->segment.time);
2634 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2635 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2637 gst_rmdemux_send_event (rmdemux, event);
2638 rmdemux->need_newsegment = FALSE;
2641 if (stream->pending_tags != NULL) {
2642 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2643 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (rmdemux), stream->pad,
2644 stream->pending_tags);
2645 stream->pending_tags = NULL;
2648 if ((rmdemux->offset + size) <= stream->seek_offset) {
2649 GST_DEBUG_OBJECT (rmdemux,
2650 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2651 stream->id, stream->seek_offset, rmdemux->offset, size);
2656 /* do special headers */
2657 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2659 gst_rmdemux_parse_video_packet (rmdemux, stream, in, data - base,
2660 version, timestamp, key);
2661 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2663 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, data - base,
2664 version, timestamp, key);
2668 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2676 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2683 gst_rmdemux_plugin_init (GstPlugin * plugin)
2685 return gst_element_register (plugin, "rmdemux",
2686 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);