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 typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
47 struct _GstRMDemuxStream
56 GstFlowReturn last_flow;
61 GstRMDemuxIndex *index;
63 gint framerate_numerator;
64 gint framerate_denominator;
70 guint16 rate; /* samplerate */
71 guint16 n_channels; /* channels */
72 guint16 sample_width; /* bits_per_sample */
73 guint16 leaf_size; /* subpacket_size */
74 guint32 packet_size; /* coded_frame_size */
76 guint32 extra_data_size; /* codec_data_length */
77 guint8 *extra_data; /* extras */
79 gboolean needs_descrambling;
80 guint subpackets_needed; /* subpackets needed for descrambling */
81 GPtrArray *subpackets; /* array containing subpacket GstBuffers */
83 /* Variables needed for fixing timestamps. */
84 GstClockTime next_ts, last_ts;
85 guint16 next_seq, last_seq;
92 guint frag_offset[MAX_FRAGS];
95 GstTagList *pending_tags;
98 struct _GstRMDemuxIndex
101 GstClockTime timestamp;
104 static GstElementDetails gst_rmdemux_details = {
107 "Demultiplex a RealMedia file into audio and video streams",
108 "David Schleef <ds@schleef.org>"
111 static GstStaticPadTemplate gst_rmdemux_sink_template =
112 GST_STATIC_PAD_TEMPLATE ("sink",
115 GST_STATIC_CAPS ("application/vnd.rn-realmedia")
118 static GstStaticPadTemplate gst_rmdemux_videosrc_template =
119 GST_STATIC_PAD_TEMPLATE ("video_%02d",
122 GST_STATIC_CAPS_ANY);
124 static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
125 GST_STATIC_PAD_TEMPLATE ("audio_%02d",
128 GST_STATIC_CAPS_ANY);
130 GST_DEBUG_CATEGORY_STATIC (rmdemux_debug);
131 #define GST_CAT_DEFAULT rmdemux_debug
133 static GstElementClass *parent_class = NULL;
135 static void gst_rmdemux_class_init (GstRMDemuxClass * klass);
136 static void gst_rmdemux_base_init (GstRMDemuxClass * klass);
137 static void gst_rmdemux_init (GstRMDemux * rmdemux);
138 static void gst_rmdemux_finalize (GObject * object);
139 static GstStateChangeReturn gst_rmdemux_change_state (GstElement * element,
140 GstStateChange transition);
141 static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer);
142 static void gst_rmdemux_loop (GstPad * pad);
143 static gboolean gst_rmdemux_sink_activate (GstPad * sinkpad);
144 static gboolean gst_rmdemux_sink_activate_push (GstPad * sinkpad,
146 static gboolean gst_rmdemux_sink_activate_pull (GstPad * sinkpad,
148 static gboolean gst_rmdemux_sink_event (GstPad * pad, GstEvent * event);
149 static gboolean gst_rmdemux_src_event (GstPad * pad, GstEvent * event);
150 static void gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event);
151 static const GstQueryType *gst_rmdemux_src_query_types (GstPad * pad);
152 static gboolean gst_rmdemux_src_query (GstPad * pad, GstQuery * query);
153 static gboolean gst_rmdemux_perform_seek (GstRMDemux * rmdemux,
156 static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data,
158 static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data,
160 static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux,
161 const guint8 * data, int length);
162 static guint gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data,
164 static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data,
166 static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data,
168 static GstFlowReturn gst_rmdemux_parse_packet (GstRMDemux * rmdemux,
169 GstBuffer * in, guint16 version);
170 static void gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux,
171 const guint8 * data, int length);
172 static void gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
173 GstRMDemuxStream * stream);
174 static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
178 gst_rmdemux_get_type (void)
180 static GType rmdemux_type = 0;
183 static const GTypeInfo rmdemux_info = {
184 sizeof (GstRMDemuxClass),
185 (GBaseInitFunc) gst_rmdemux_base_init, NULL,
186 (GClassInitFunc) gst_rmdemux_class_init,
187 NULL, NULL, sizeof (GstRMDemux), 0,
188 (GInstanceInitFunc) gst_rmdemux_init,
192 g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
199 gst_rmdemux_base_init (GstRMDemuxClass * klass)
201 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
203 gst_element_class_add_pad_template (element_class,
204 gst_static_pad_template_get (&gst_rmdemux_sink_template));
205 gst_element_class_add_pad_template (element_class,
206 gst_static_pad_template_get (&gst_rmdemux_videosrc_template));
207 gst_element_class_add_pad_template (element_class,
208 gst_static_pad_template_get (&gst_rmdemux_audiosrc_template));
209 gst_element_class_set_details (element_class, &gst_rmdemux_details);
213 gst_rmdemux_class_init (GstRMDemuxClass * klass)
215 GObjectClass *gobject_class;
216 GstElementClass *gstelement_class;
218 gobject_class = (GObjectClass *) klass;
219 gstelement_class = (GstElementClass *) klass;
221 parent_class = g_type_class_peek_parent (klass);
223 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rmdemux_change_state);
225 GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
226 0, "Demuxer for Realmedia streams");
228 gobject_class->finalize = gst_rmdemux_finalize;
232 gst_rmdemux_finalize (GObject * object)
234 GstRMDemux *rmdemux = GST_RMDEMUX (object);
236 if (rmdemux->adapter) {
237 g_object_unref (rmdemux->adapter);
238 rmdemux->adapter = NULL;
241 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
245 gst_rmdemux_init (GstRMDemux * rmdemux)
248 gst_pad_new_from_static_template (&gst_rmdemux_sink_template, "sink");
249 gst_pad_set_event_function (rmdemux->sinkpad,
250 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_event));
251 gst_pad_set_chain_function (rmdemux->sinkpad,
252 GST_DEBUG_FUNCPTR (gst_rmdemux_chain));
253 gst_pad_set_activate_function (rmdemux->sinkpad,
254 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate));
255 gst_pad_set_activatepull_function (rmdemux->sinkpad,
256 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_pull));
257 gst_pad_set_activatepush_function (rmdemux->sinkpad,
258 GST_DEBUG_FUNCPTR (gst_rmdemux_sink_activate_push));
260 gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
262 rmdemux->adapter = gst_adapter_new ();
263 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
264 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
265 rmdemux->need_newsegment = TRUE;
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)
473 gboolean flush, accurate;
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;
508 accurate = flags & GST_SEEK_FLAG_ACCURATE;
510 /* first step is to unlock the streaming thread if it is
511 * blocked in a chain call, we do this by starting the flush. */
513 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_start ());
514 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_start ());
516 gst_pad_pause_task (rmdemux->sinkpad);
519 GST_LOG_OBJECT (rmdemux, "Done starting flushes");
521 /* now grab the stream lock so that streaming cannot continue, for
522 * non flushing seeks when the element is in PAUSED this could block
524 GST_PAD_STREAM_LOCK (rmdemux->sinkpad);
526 GST_LOG_OBJECT (rmdemux, "Took streamlock");
528 /* close current segment first */
529 if (rmdemux->segment_running && !flush) {
532 newseg = gst_event_new_new_segment (TRUE, rmdemux->segment.rate,
533 GST_FORMAT_TIME, rmdemux->segment.start,
534 rmdemux->segment.last_stop, rmdemux->segment.time);
536 gst_rmdemux_send_event (rmdemux, newseg);
540 gst_segment_set_seek (&rmdemux->segment, rate, format, flags,
541 cur_type, cur, stop_type, stop, &update);
544 GST_DEBUG_OBJECT (rmdemux, "segment positions set to %" GST_TIME_FORMAT "-%"
545 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start),
546 GST_TIME_ARGS (rmdemux->segment.stop));
548 /* we need to stop flushing on the sinkpad as we're going to use it
549 * next. We can do this as we have the STREAM lock now. */
550 gst_pad_push_event (rmdemux->sinkpad, gst_event_new_flush_stop ());
552 GST_LOG_OBJECT (rmdemux, "Pushed FLUSH_STOP event");
554 /* For each stream, find the first index offset equal to or before our seek
555 * target. Of these, find the smallest offset. That's where we seek to.
557 * Then we pull 4 bytes from that offset, and validate that we've seeked to a
558 * what looks like a plausible packet.
559 * If that fails, restart, with the seek target set to one less than the
560 * offset we just tried. If we run out of places to try, treat that as a fatal
563 if (!find_seek_offset_time (rmdemux, rmdemux->segment.last_stop)) {
564 GST_LOG_OBJECT (rmdemux, "Failed to find seek offset by time");
569 GST_LOG_OBJECT (rmdemux, "Validating offset %u", rmdemux->offset);
570 validated = gst_rmdemux_validate_offset (rmdemux);
572 GST_INFO_OBJECT (rmdemux, "Failed to validate offset at %u",
574 if (!find_seek_offset_bytes (rmdemux, rmdemux->offset - 1)) {
578 validated = gst_rmdemux_validate_offset (rmdemux);
581 GST_LOG_OBJECT (rmdemux, "Found final offset. Excellent!");
583 /* now we have a new position, prepare for streaming again */
585 /* Reset the demuxer state */
586 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
589 gst_rmdemux_send_event (rmdemux, gst_event_new_flush_stop ());
591 /* must send newsegment event from streaming thread, so just set flag */
592 rmdemux->need_newsegment = TRUE;
594 /* notify start of new segment */
595 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
596 gst_element_post_message (GST_ELEMENT_CAST (rmdemux),
597 gst_message_new_segment_start (GST_OBJECT_CAST (rmdemux),
598 GST_FORMAT_TIME, rmdemux->segment.last_stop));
601 /* restart our task since it might have been stopped when we did the
603 gst_pad_start_task (rmdemux->sinkpad, (GstTaskFunction) gst_rmdemux_loop,
608 /* streaming can continue now */
609 GST_PAD_STREAM_UNLOCK (rmdemux->sinkpad);
615 GST_DEBUG_OBJECT (rmdemux, "seek failed");
622 gst_rmdemux_src_query (GstPad * pad, GstQuery * query)
624 gboolean res = FALSE;
627 rmdemux = GST_RMDEMUX (gst_pad_get_parent (pad));
629 switch (GST_QUERY_TYPE (query)) {
630 case GST_QUERY_POSITION:
631 GST_DEBUG_OBJECT (rmdemux, "Position query: no idea from demuxer!");
633 case GST_QUERY_DURATION:{
636 gst_query_parse_duration (query, &fmt, NULL);
637 if (fmt == GST_FORMAT_TIME) {
638 GST_OBJECT_LOCK (rmdemux);
639 if (G_LIKELY (rmdemux->running)) {
640 gst_query_set_duration (query, GST_FORMAT_TIME, rmdemux->duration);
641 GST_DEBUG_OBJECT (rmdemux, "duration set to %" GST_TIME_FORMAT,
642 GST_TIME_ARGS (rmdemux->duration));
645 GST_OBJECT_UNLOCK (rmdemux);
649 case GST_QUERY_SEEKING:{
652 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
653 if (fmt == GST_FORMAT_TIME) {
654 GST_OBJECT_LOCK (rmdemux);
655 if (G_LIKELY (rmdemux->running)) {
656 gst_query_set_seeking (query, GST_FORMAT_TIME, rmdemux->seekable,
657 0, rmdemux->duration);
660 GST_OBJECT_UNLOCK (rmdemux);
665 res = gst_pad_query_default (pad, query);
669 gst_object_unref (rmdemux);
673 static const GstQueryType *
674 gst_rmdemux_src_query_types (GstPad * pad)
676 static const GstQueryType query_types[] = {
687 gst_rmdemux_reset (GstRMDemux * rmdemux)
691 GST_OBJECT_LOCK (rmdemux);
692 rmdemux->running = FALSE;
693 GST_OBJECT_UNLOCK (rmdemux);
695 for (cur = rmdemux->streams; cur; cur = cur->next) {
696 GstRMDemuxStream *stream = cur->data;
698 g_object_unref (stream->adapter);
699 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
700 gst_element_remove_pad (GST_ELEMENT (rmdemux), stream->pad);
701 if (stream->pending_tags)
702 gst_tag_list_free (stream->pending_tags);
703 if (stream->subpackets)
704 g_ptr_array_free (stream->subpackets, TRUE);
705 g_free (stream->index);
708 g_slist_free (rmdemux->streams);
709 rmdemux->streams = NULL;
710 rmdemux->n_audio_streams = 0;
711 rmdemux->n_video_streams = 0;
713 gst_adapter_clear (rmdemux->adapter);
714 rmdemux->state = RMDEMUX_STATE_HEADER;
715 rmdemux->have_pads = FALSE;
717 gst_segment_init (&rmdemux->segment, GST_FORMAT_UNDEFINED);
718 rmdemux->first_ts = GST_CLOCK_TIME_NONE;
719 rmdemux->base_ts = GST_CLOCK_TIME_NONE;
720 rmdemux->need_newsegment = TRUE;
723 static GstStateChangeReturn
724 gst_rmdemux_change_state (GstElement * element, GstStateChange transition)
726 GstRMDemux *rmdemux = GST_RMDEMUX (element);
727 GstStateChangeReturn res;
729 switch (transition) {
730 case GST_STATE_CHANGE_NULL_TO_READY:
732 case GST_STATE_CHANGE_READY_TO_PAUSED:
733 rmdemux->state = RMDEMUX_STATE_HEADER;
734 rmdemux->have_pads = FALSE;
735 gst_segment_init (&rmdemux->segment, GST_FORMAT_TIME);
736 rmdemux->running = FALSE;
738 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
744 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
746 switch (transition) {
747 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
749 case GST_STATE_CHANGE_PAUSED_TO_READY:{
750 gst_rmdemux_reset (rmdemux);
753 case GST_STATE_CHANGE_READY_TO_NULL:
762 /* this function is called when the pad is activated and should start
765 * We check if we can do random access to decide if we work push or
769 gst_rmdemux_sink_activate (GstPad * sinkpad)
771 if (gst_pad_check_pull_range (sinkpad)) {
772 return gst_pad_activate_pull (sinkpad, TRUE);
774 return gst_pad_activate_push (sinkpad, TRUE);
778 /* this function gets called when we activate ourselves in push mode.
779 * We cannot seek (ourselves) in the stream */
781 gst_rmdemux_sink_activate_push (GstPad * pad, gboolean active)
785 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
787 GST_DEBUG_OBJECT (rmdemux, "activate_push");
789 rmdemux->seekable = FALSE;
794 /* this function gets called when we activate ourselves in pull mode.
795 * We can perform random access to the resource and we start a task
796 * to start reading */
798 gst_rmdemux_sink_activate_pull (GstPad * pad, gboolean active)
802 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
804 GST_DEBUG_OBJECT (rmdemux, "activate_pull");
807 rmdemux->seekable = TRUE;
809 rmdemux->loop_state = RMDEMUX_LOOP_STATE_HEADER;
810 rmdemux->data_offset = G_MAXUINT;
812 return gst_pad_start_task (pad, (GstTaskFunction) gst_rmdemux_loop, pad);
814 return gst_pad_stop_task (pad);
818 /* random access mode - just pass over to our chain function */
820 gst_rmdemux_loop (GstPad * pad)
824 GstFlowReturn ret = GST_FLOW_OK;
827 rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
829 GST_LOG_OBJECT (rmdemux, "loop with state=%d and offset=0x%x",
830 rmdemux->loop_state, rmdemux->offset);
832 switch (rmdemux->state) {
833 case RMDEMUX_STATE_HEADER:
836 case RMDEMUX_STATE_HEADER_DATA:
839 case RMDEMUX_STATE_DATA_PACKET:
840 size = rmdemux->avg_packet_size;
842 case RMDEMUX_STATE_EOS:
843 GST_LOG_OBJECT (rmdemux, "At EOS, pausing task");
844 ret = GST_FLOW_UNEXPECTED;
847 GST_LOG_OBJECT (rmdemux, "Default: requires %d bytes (state is %d)",
848 (int) rmdemux->size, rmdemux->state);
849 size = rmdemux->size;
852 ret = gst_pad_pull_range (pad, rmdemux->offset, size, &buffer);
853 if (ret != GST_FLOW_OK) {
854 if (rmdemux->offset == rmdemux->index_offset) {
855 /* The index isn't available so forget about it */
856 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
857 rmdemux->offset = rmdemux->data_offset;
858 GST_OBJECT_LOCK (rmdemux);
859 rmdemux->running = TRUE;
860 rmdemux->seekable = FALSE;
861 GST_OBJECT_UNLOCK (rmdemux);
864 GST_DEBUG_OBJECT (rmdemux, "Unable to pull %d bytes at offset 0x%08x "
865 "(pull_range returned flow %s, state is %d)", (gint) size,
866 rmdemux->offset, gst_flow_get_name (ret), GST_STATE (rmdemux));
871 size = GST_BUFFER_SIZE (buffer);
873 /* Defer to the chain function */
874 ret = gst_rmdemux_chain (pad, buffer);
875 if (ret != GST_FLOW_OK) {
876 GST_DEBUG_OBJECT (rmdemux, "Chain flow failed at offset 0x%08x",
881 rmdemux->offset += size;
883 switch (rmdemux->loop_state) {
884 case RMDEMUX_LOOP_STATE_HEADER:
885 if (rmdemux->offset >= rmdemux->data_offset) {
886 /* It's the end of the header */
887 rmdemux->loop_state = RMDEMUX_LOOP_STATE_INDEX;
888 rmdemux->offset = rmdemux->index_offset;
891 case RMDEMUX_LOOP_STATE_INDEX:
892 if (rmdemux->state == RMDEMUX_STATE_HEADER) {
893 if (rmdemux->index_offset == 0) {
894 /* We've read the last index */
895 rmdemux->loop_state = RMDEMUX_LOOP_STATE_DATA;
896 rmdemux->offset = rmdemux->data_offset;
897 GST_OBJECT_LOCK (rmdemux);
898 rmdemux->running = TRUE;
899 GST_OBJECT_UNLOCK (rmdemux);
901 /* Get the next index */
902 rmdemux->offset = rmdemux->index_offset;
906 case RMDEMUX_LOOP_STATE_DATA:
915 const gchar *reason = gst_flow_get_name (ret);
917 GST_LOG_OBJECT (rmdemux, "pausing task, reason %s", reason);
918 rmdemux->segment_running = FALSE;
919 gst_pad_pause_task (rmdemux->sinkpad);
921 if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) {
922 if (ret == GST_FLOW_UNEXPECTED) {
923 /* perform EOS logic */
924 if (rmdemux->segment.flags & GST_SEEK_FLAG_SEGMENT) {
927 /* for segment playback we need to post when (in stream time)
928 * we stopped, this is either stop (when set) or the duration. */
929 if ((stop = rmdemux->segment.stop) == -1)
930 stop = rmdemux->segment.duration;
932 GST_LOG_OBJECT (rmdemux, "Sending segment done, at end of segment");
933 gst_element_post_message (GST_ELEMENT (rmdemux),
934 gst_message_new_segment_done (GST_OBJECT (rmdemux),
935 GST_FORMAT_TIME, stop));
937 /* normal playback, send EOS to all linked pads */
938 GST_LOG_OBJECT (rmdemux, "Sending EOS, at end of stream");
939 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
942 GST_ELEMENT_ERROR (rmdemux, STREAM, FAILED,
943 (NULL), ("stream stopped, reason %s", reason));
944 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
952 gst_rmdemux_fourcc_isplausible (guint32 fourcc)
956 for (i = 0; i < 4; i++) {
957 if (!isprint ((int) ((unsigned char *) (&fourcc))[i])) {
965 gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer)
967 GstFlowReturn ret = GST_FLOW_OK;
972 GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
974 if (rmdemux->base_ts == -1) {
975 rmdemux->base_ts = GST_BUFFER_TIMESTAMP (buffer);
976 GST_LOG_OBJECT (rmdemux, "base_ts %" GST_TIME_FORMAT,
977 GST_TIME_ARGS (rmdemux->base_ts));
980 gst_adapter_push (rmdemux->adapter, buffer);
982 GST_LOG_OBJECT (rmdemux, "Chaining buffer of size %d",
983 GST_BUFFER_SIZE (buffer));
986 avail = gst_adapter_available (rmdemux->adapter);
988 GST_LOG_OBJECT (rmdemux, "looping in chain, avail %u", avail);
989 switch (rmdemux->state) {
990 case RMDEMUX_STATE_HEADER:
992 if (gst_adapter_available (rmdemux->adapter) < HEADER_SIZE)
995 data = gst_adapter_peek (rmdemux->adapter, HEADER_SIZE);
997 rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
998 rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - HEADER_SIZE;
999 rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
1001 /* Sanity-check. We assume that the FOURCC is printable ASCII */
1002 if (!gst_rmdemux_fourcc_isplausible (rmdemux->object_id)) {
1003 /* Failed. Remain in HEADER state, try again... We flush only
1004 * the actual FOURCC, not the entire header, because we could
1005 * need to resync anywhere at all... really, this should never
1007 GST_WARNING_OBJECT (rmdemux, "Bogus looking header, unprintable "
1009 gst_adapter_flush (rmdemux->adapter, 4);
1014 GST_LOG_OBJECT (rmdemux, "header found with object_id=%"
1016 " size=%08x object_version=%d",
1017 GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
1018 rmdemux->object_version);
1020 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1022 switch (rmdemux->object_id) {
1023 case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
1024 rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
1026 case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
1027 rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
1029 case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
1030 rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
1032 case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
1033 rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
1035 case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
1036 rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
1038 case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
1039 rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
1042 rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
1047 case RMDEMUX_STATE_HEADER_UNKNOWN:
1049 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1052 GST_WARNING_OBJECT (rmdemux, "Unknown object_id %" GST_FOURCC_FORMAT,
1053 GST_FOURCC_ARGS (rmdemux->object_id));
1055 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1056 rmdemux->state = RMDEMUX_STATE_HEADER;
1059 case RMDEMUX_STATE_HEADER_RMF:
1061 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1064 if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
1065 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1067 gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
1070 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1071 rmdemux->state = RMDEMUX_STATE_HEADER;
1074 case RMDEMUX_STATE_HEADER_PROP:
1076 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1078 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1080 gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
1082 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1083 rmdemux->state = RMDEMUX_STATE_HEADER;
1086 case RMDEMUX_STATE_HEADER_MDPR:
1088 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1090 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1092 gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
1094 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1095 rmdemux->state = RMDEMUX_STATE_HEADER;
1098 case RMDEMUX_STATE_HEADER_CONT:
1100 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1102 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1104 gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
1106 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1107 rmdemux->state = RMDEMUX_STATE_HEADER;
1110 case RMDEMUX_STATE_HEADER_DATA:
1112 /* If we haven't already done so then signal there are no more pads */
1113 if (!rmdemux->have_pads) {
1114 GST_LOG_OBJECT (rmdemux, "no more pads");
1115 gst_element_no_more_pads (GST_ELEMENT (rmdemux));
1116 rmdemux->have_pads = TRUE;
1119 /* The actual header is only 8 bytes */
1120 rmdemux->size = DATA_SIZE;
1121 GST_LOG_OBJECT (rmdemux, "data available %d",
1122 gst_adapter_available (rmdemux->adapter));
1123 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1126 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1128 gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
1130 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1132 rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
1135 case RMDEMUX_STATE_HEADER_INDX:
1137 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1139 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1141 rmdemux->size = gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
1143 /* Only flush the header */
1144 gst_adapter_flush (rmdemux->adapter, HEADER_SIZE);
1146 rmdemux->state = RMDEMUX_STATE_INDX_DATA;
1149 case RMDEMUX_STATE_INDX_DATA:
1151 /* There's not always an data to get... */
1152 if (rmdemux->size > 0) {
1153 if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
1156 data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
1158 gst_rmdemux_parse_indx_data (rmdemux, data, rmdemux->size);
1160 gst_adapter_flush (rmdemux->adapter, rmdemux->size);
1163 rmdemux->state = RMDEMUX_STATE_HEADER;
1166 case RMDEMUX_STATE_DATA_PACKET:
1168 if (gst_adapter_available (rmdemux->adapter) < 2)
1171 data = gst_adapter_peek (rmdemux->adapter, 2);
1172 version = RMDEMUX_GUINT16_GET (data);
1173 GST_LOG_OBJECT (rmdemux, "Data packet with version=%d", version);
1175 if (version == 0 || version == 1) {
1178 if (gst_adapter_available (rmdemux->adapter) < 4)
1180 data = gst_adapter_peek (rmdemux->adapter, 4);
1182 length = RMDEMUX_GUINT16_GET (data + 2);
1183 GST_LOG_OBJECT (rmdemux, "Got length %d", length);
1186 GST_LOG_OBJECT (rmdemux, "length too small, dropping");
1187 /* Invalid, just drop it */
1188 gst_adapter_flush (rmdemux->adapter, 4);
1192 avail = gst_adapter_available (rmdemux->adapter);
1196 GST_LOG_OBJECT (rmdemux, "we have %u available and we needed %d",
1199 /* flush version and length */
1200 gst_adapter_flush (rmdemux->adapter, 4);
1203 buffer = gst_adapter_take_buffer (rmdemux->adapter, length);
1205 ret = gst_rmdemux_parse_packet (rmdemux, buffer, version);
1206 rmdemux->chunk_index++;
1209 if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
1210 rmdemux->state = RMDEMUX_STATE_HEADER;
1213 gst_adapter_flush (rmdemux->adapter, 2);
1215 if (rmdemux->data_offset == 0) {
1216 GST_LOG_OBJECT (rmdemux,
1217 "No further data, internal demux state EOS");
1218 rmdemux->state = RMDEMUX_STATE_EOS;
1220 rmdemux->state = RMDEMUX_STATE_HEADER;
1224 case RMDEMUX_STATE_EOS:
1225 gst_rmdemux_send_event (rmdemux, gst_event_new_eos ());
1228 GST_WARNING_OBJECT (rmdemux, "Unhandled state %d", rmdemux->state);
1237 static GstRMDemuxStream *
1238 gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
1242 for (cur = rmdemux->streams; cur; cur = cur->next) {
1243 GstRMDemuxStream *stream = cur->data;
1245 if (stream->id == id) {
1254 gst_rmdemux_send_event (GstRMDemux * rmdemux, GstEvent * event)
1258 for (cur = rmdemux->streams; cur; cur = cur->next) {
1259 GstRMDemuxStream *stream = cur->data;
1261 GST_DEBUG_OBJECT (rmdemux, "Pushing %s event on pad %s",
1262 GST_EVENT_TYPE_NAME (event), GST_PAD_NAME (stream->pad));
1264 switch (GST_EVENT_TYPE (event)) {
1265 case GST_EVENT_FLUSH_STOP:
1266 stream->last_ts = -1;
1267 stream->next_ts = -1;
1268 stream->last_seq = -1;
1269 stream->next_seq = -1;
1270 stream->last_flow = GST_FLOW_OK;
1275 gst_event_ref (event);
1276 gst_pad_push_event (stream->pad, event);
1278 gst_event_unref (event);
1282 gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
1284 GstCaps *stream_caps = NULL;
1285 const gchar *codec_tag = NULL;
1286 const gchar *codec_name = NULL;
1289 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
1290 char *name = g_strdup_printf ("video_%02d", rmdemux->n_video_streams);
1293 gst_pad_new_from_static_template (&gst_rmdemux_videosrc_template, name);
1296 codec_tag = GST_TAG_VIDEO_CODEC;
1298 switch (stream->fourcc) {
1299 case GST_RM_VDO_RV10:
1300 codec_name = "Real Video 1.0";
1303 case GST_RM_VDO_RV20:
1304 codec_name = "Real Video 2.0";
1307 case GST_RM_VDO_RV30:
1308 codec_name = "Real Video 3.0";
1311 case GST_RM_VDO_RV40:
1312 codec_name = "Real Video 4.0";
1316 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1317 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1318 GST_WARNING_OBJECT (rmdemux,
1319 "Unknown video FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1320 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1325 gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
1327 "format", G_TYPE_INT,
1328 (int) stream->format,
1329 "subformat", G_TYPE_INT, (int) stream->subformat, NULL);
1333 gst_caps_set_simple (stream_caps,
1334 "width", G_TYPE_INT, stream->width,
1335 "height", G_TYPE_INT, stream->height,
1336 "framerate", GST_TYPE_FRACTION, stream->framerate_numerator,
1337 stream->framerate_denominator, NULL);
1339 rmdemux->n_video_streams++;
1341 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
1342 char *name = g_strdup_printf ("audio_%02d", rmdemux->n_audio_streams);
1345 gst_pad_new_from_static_template (&gst_rmdemux_audiosrc_template, name);
1346 GST_LOG_OBJECT (rmdemux, "Created audio pad \"%s\"", name);
1349 codec_tag = GST_TAG_AUDIO_CODEC;
1351 switch (stream->fourcc) {
1352 /* Older RealAudio Codecs */
1353 case GST_RM_AUD_14_4:
1354 codec_name = "Real Audio 14.4kbps";
1358 case GST_RM_AUD_28_8:
1359 codec_name = "Real Audio 28.8kbps";
1363 /* DolbyNet (Dolby AC3, low bitrate) */
1364 case GST_RM_AUD_DNET:
1365 codec_name = "AC-3 audio";
1367 gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
1368 (int) stream->rate, NULL);
1369 stream->needs_descrambling = TRUE;
1370 stream->subpackets_needed = 1;
1371 stream->subpackets = NULL;
1375 case GST_RM_AUD_RAAC:
1376 case GST_RM_AUD_RACP:
1377 codec_name = "MPEG4 audio";
1379 gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
1380 (int) 4, "framed", G_TYPE_BOOLEAN, TRUE, NULL);
1381 if (stream->extra_data_size > 0) {
1382 /* strip off an unknown byte in the extra data */
1383 stream->extra_data_size--;
1384 stream->extra_data++;
1386 stream->needs_descrambling = TRUE;
1387 stream->subpackets_needed = 1;
1388 stream->subpackets = NULL;
1392 case GST_RM_AUD_ATRC:
1393 codec_name = "Sony ATRAC3";
1394 stream_caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
1397 /* RealAudio G2 audio */
1398 case GST_RM_AUD_COOK:
1399 codec_name = "Real Audio G2 (Cook)";
1401 stream->needs_descrambling = TRUE;
1402 stream->subpackets_needed = stream->height;
1403 stream->subpackets = NULL;
1406 /* RALF is lossless */
1407 case GST_RM_AUD_RALF:
1408 /* FIXME: codec_name = */
1409 GST_DEBUG_OBJECT (rmdemux, "RALF");
1410 stream_caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
1413 /* Sipro/ACELP.NET Voice Codec (MIME unknown) */
1414 case GST_RM_AUD_SIPR:
1415 /* FIXME: codec_name = */
1416 stream_caps = gst_caps_new_simple ("audio/x-sipro", NULL);
1420 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1421 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1422 GST_WARNING_OBJECT (rmdemux,
1423 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1424 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1430 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1431 (int) version, NULL);
1435 gst_caps_set_simple (stream_caps,
1436 "flavor", G_TYPE_INT, (int) stream->flavor,
1437 "rate", G_TYPE_INT, (int) stream->rate,
1438 "channels", G_TYPE_INT, (int) stream->n_channels,
1439 "width", G_TYPE_INT, (int) stream->sample_width,
1440 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1441 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1442 "height", G_TYPE_INT, (int) stream->height, NULL);
1444 rmdemux->n_audio_streams++;
1446 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1452 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1453 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1454 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1455 g_slist_length (rmdemux->streams));
1457 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1460 if (stream->pad && stream_caps) {
1462 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1463 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1465 /* add codec_data if there is any */
1466 if (stream->extra_data_size > 0) {
1469 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1470 memcpy (GST_BUFFER_DATA (buffer), stream->extra_data,
1471 stream->extra_data_size);
1473 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1476 gst_buffer_unref (buffer);
1479 gst_pad_use_fixed_caps (stream->pad);
1481 gst_pad_set_caps (stream->pad, stream_caps);
1482 gst_pad_set_event_function (stream->pad,
1483 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1484 gst_pad_set_query_type_function (stream->pad,
1485 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query_types));
1486 gst_pad_set_query_function (stream->pad,
1487 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1489 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1490 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1491 gst_pad_set_active (stream->pad, TRUE);
1492 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1494 /* save for later, we must send the tags after the newsegment event */
1495 if (codec_name != NULL && codec_tag != NULL) {
1496 stream->pending_tags = gst_tag_list_new ();
1497 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1498 codec_tag, codec_name, NULL);
1505 gst_caps_unref (stream_caps);
1509 re_skip_pascal_string (const guint8 * ptr)
1519 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1521 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1522 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1526 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1528 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1529 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1530 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1531 RMDEMUX_GUINT32_GET (data + 8));
1532 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1533 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1534 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1535 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1537 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1538 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1540 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1541 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1542 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1543 rmdemux->index_offset);
1544 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1545 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1546 rmdemux->data_offset);
1547 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1548 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1552 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1554 GstRMDemuxStream *stream;
1555 char *stream1_type_string;
1556 char *stream2_type_string;
1561 stream = g_new0 (GstRMDemuxStream, 1);
1563 stream->id = RMDEMUX_GUINT16_GET (data);
1564 stream->index = NULL;
1565 stream->seek_offset = 0;
1566 stream->last_ts = -1;
1567 stream->next_ts = -1;
1568 stream->last_flow = GST_FLOW_OK;
1569 stream->discont = TRUE;
1570 stream->adapter = gst_adapter_new ();
1571 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1574 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1575 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1576 length - offset, &str_len);
1578 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1579 length - offset, &str_len);
1582 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1584 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1585 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1587 * so, we should not rely on it to know which stream type it is
1590 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1591 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1593 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1594 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1595 } else if (strcmp (stream2_type_string,
1596 "video/x-pn-multirate-realvideo") == 0) {
1597 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1598 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1599 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1600 } else if (strcmp (stream2_type_string,
1601 "audio/x-pn-multirate-realaudio") == 0) {
1602 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1603 } else if (strcmp (stream2_type_string,
1604 "audio/x-pn-multirate-realaudio-live") == 0) {
1605 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1606 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1607 /* Another audio type found in the real testsuite */
1608 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1609 } else if (strcmp (stream1_type_string, "") == 0 &&
1610 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1611 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1613 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1614 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1615 stream1_type_string, stream2_type_string);
1617 g_free (stream1_type_string);
1618 g_free (stream2_type_string);
1622 stream->subtype = stream_type;
1623 switch (stream_type) {
1625 case GST_RMDEMUX_STREAM_VIDEO:
1626 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1627 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1628 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1629 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1630 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1631 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1632 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1633 stream->extra_data_size = length - (offset + 26);
1634 stream->extra_data = (guint8 *) data + offset + 26;
1635 /* Natural way to represent framerates here requires unsigned 32 bit
1636 * numerator, which we don't have. For the nasty case, approximate...
1639 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1640 RMDEMUX_GUINT16_GET (data + offset + 24);
1641 if (numerator > G_MAXINT) {
1642 stream->framerate_numerator = (gint) (numerator >> 1);
1643 stream->framerate_denominator = 32768;
1645 stream->framerate_numerator = (gint) numerator;
1646 stream->framerate_denominator = 65536;
1650 GST_DEBUG_OBJECT (rmdemux,
1651 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1652 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1653 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1654 stream->rate, stream->framerate_numerator,
1655 stream->framerate_denominator, stream->subformat, stream->format,
1656 stream->extra_data_size);
1658 case GST_RMDEMUX_STREAM_AUDIO:{
1659 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1660 GST_INFO ("stream version = %u", stream->version);
1661 switch (stream->version) {
1663 stream->fourcc = GST_RM_AUD_14_4;
1664 stream->packet_size = 20;
1665 stream->rate = 8000;
1666 stream->n_channels = 1;
1667 stream->sample_width = 16;
1669 stream->leaf_size = 0;
1673 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1674 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1675 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1676 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1677 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1678 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1679 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1680 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1681 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1682 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1683 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1684 stream->extra_data_size);
1685 if (length - (offset + 73) >= stream->extra_data_size) {
1686 stream->extra_data = (guint8 *) data + offset + 73;
1688 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1689 stream->extra_data_size = 0;
1693 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1694 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1695 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1696 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1697 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1698 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1699 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1700 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1701 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1702 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1703 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1704 stream->extra_data_size);
1705 if (length - (offset + 78) >= stream->extra_data_size) {
1706 stream->extra_data = (guint8 *) data + offset + 78;
1708 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1709 stream->extra_data_size = 0;
1713 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1719 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1720 GST_DEBUG_OBJECT (rmdemux,
1721 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1722 stream->rate, stream->sample_width, stream->n_channels);
1726 case GST_RMDEMUX_STREAM_FILEINFO:
1730 /* Length of this section */
1731 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1732 RMDEMUX_GUINT32_GET (data + offset));
1735 /* Unknown : 00 00 00 00 */
1738 /* Number of variables that would follow (loop iterations) */
1739 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1742 while (element_nb) {
1743 /* Category Id : 00 00 00 XX 00 00 */
1747 offset += re_skip_pascal_string (data + offset);
1749 /* Variable Value Type */
1750 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1751 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1754 /* Variable Value */
1755 offset += re_skip_pascal_string (data + offset);
1761 case GST_RMDEMUX_STREAM_UNKNOWN:
1766 gst_rmdemux_add_stream (rmdemux, stream);
1770 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1775 n = RMDEMUX_GUINT32_GET (data);
1776 id = RMDEMUX_GUINT16_GET (data + 4);
1777 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1779 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1782 /* Point to the next index_stream */
1783 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1785 /* Return the length of the index */
1790 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1795 GstRMDemuxIndex *index;
1797 /* The number of index records */
1800 if (rmdemux->index_stream == NULL)
1803 /* don't parse the index a second time when operating pull-based and
1804 * reaching the end of the file */
1805 if (rmdemux->index_stream->index_length > 0) {
1806 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1810 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1811 rmdemux->index_stream->index = index;
1812 rmdemux->index_stream->index_length = n;
1814 for (i = 0; i < n; i++) {
1815 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1816 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1818 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1819 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1826 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1828 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1829 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1830 rmdemux->chunk_index = 0;
1831 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1832 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1836 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1840 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1842 gst_element_found_tags (GST_ELEMENT (rmdemux), tags);
1846 static GstFlowReturn
1847 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1852 /* store the value */
1853 stream->last_flow = ret;
1855 /* if it's success we can return the value right away */
1856 if (GST_FLOW_IS_SUCCESS (ret))
1859 /* any other error that is not-linked can be returned right
1861 if (ret != GST_FLOW_NOT_LINKED)
1864 for (cur = rmdemux->streams; cur; cur = cur->next) {
1865 GstRMDemuxStream *ostream = cur->data;
1867 ret = ostream->last_flow;
1868 /* some other return value (must be SUCCESS but we can return
1869 * other values as well) */
1870 if (ret != GST_FLOW_NOT_LINKED)
1873 /* if we get here, all other pads were unlinked and we return
1874 * NOT_LINKED then */
1880 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1881 GstRMDemuxStream * stream)
1883 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1886 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1887 stream->subpackets->len);
1888 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1889 g_ptr_array_set_size (stream->subpackets, 0);
1892 static GstFlowReturn
1893 gst_rmdemux_descramble_cook_audio (GstRMDemux * rmdemux,
1894 GstRMDemuxStream * stream)
1898 guint packet_size = stream->packet_size;
1899 guint height = stream->subpackets->len;
1900 guint leaf_size = stream->leaf_size;
1903 g_assert (stream->height == height);
1905 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1908 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
1909 GST_BUFFER_OFFSET_NONE, height * packet_size,
1910 GST_PAD_CAPS (stream->pad), &outbuf);
1912 if (ret != GST_FLOW_OK)
1915 for (p = 0; p < height; ++p) {
1916 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1917 guint8 *b_data = GST_BUFFER_DATA (b);
1920 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1922 for (x = 0; x < packet_size / leaf_size; ++x) {
1925 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1926 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1927 memcpy (GST_BUFFER_DATA (outbuf) + leaf_size * idx, b_data, leaf_size);
1928 b_data += leaf_size;
1932 /* some decoders, such as realaudiodec, need to be fed in packet units */
1933 for (p = 0; p < height; ++p) {
1936 subbuf = gst_buffer_create_sub (outbuf, p * packet_size, packet_size);
1938 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1939 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1941 if (stream->discont) {
1942 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1943 stream->discont = FALSE;
1946 gst_buffer_set_caps (subbuf, GST_PAD_CAPS (stream->pad));
1947 ret = gst_pad_push (stream->pad, subbuf);
1948 if (ret != GST_FLOW_OK)
1952 gst_buffer_unref (outbuf);
1956 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1961 static GstFlowReturn
1962 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1963 GstRMDemuxStream * stream)
1967 buf = g_ptr_array_index (stream->subpackets, 0);
1968 g_ptr_array_index (stream->subpackets, 0) = NULL;
1969 g_ptr_array_set_size (stream->subpackets, 0);
1971 buf = gst_rm_utils_descramble_dnet_buffer (buf);
1973 if (stream->discont) {
1974 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
1975 stream->discont = FALSE;
1977 return gst_pad_push (stream->pad, buf);
1980 static GstFlowReturn
1981 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
1982 GstRMDemuxStream * stream)
1985 GstBuffer *buf, *outbuf;
1986 guint frames, index, i;
1989 GstClockTime timestamp;
1993 buf = g_ptr_array_index (stream->subpackets, 0);
1994 g_ptr_array_index (stream->subpackets, 0) = NULL;
1995 g_ptr_array_set_size (stream->subpackets, 0);
1997 data = GST_BUFFER_DATA (buf);
1998 size = GST_BUFFER_SIZE (buf);
1999 timestamp = GST_BUFFER_TIMESTAMP (buf);
2001 frames = (data[1] & 0xf0) >> 4;
2002 index = 2 * frames + 2;
2004 for (i = 0; i < frames; i++) {
2005 guint len = (data[i * 2 + 2] << 8) | data[i * 2 + 3];
2007 outbuf = gst_buffer_create_sub (buf, index, len);
2009 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2010 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2014 if (stream->discont) {
2015 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2016 stream->discont = FALSE;
2018 res = gst_pad_push (stream->pad, outbuf);
2019 if (res != GST_FLOW_OK)
2022 gst_buffer_unref (buf);
2026 static GstFlowReturn
2027 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2028 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2032 if (stream->subpackets == NULL)
2033 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2035 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
2036 stream->subpackets_needed, GST_BUFFER_SIZE (buf), keyframe);
2038 if (keyframe && stream->subpackets->len > 0) {
2039 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2042 g_ptr_array_add (stream->subpackets, buf);
2044 if (stream->subpackets->len < stream->subpackets_needed)
2047 g_assert (stream->subpackets->len >= 1);
2049 switch (stream->fourcc) {
2050 case GST_RM_AUD_DNET:
2051 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2053 case GST_RM_AUD_COOK:
2054 ret = gst_rmdemux_descramble_cook_audio (rmdemux, stream);
2056 case GST_RM_AUD_RAAC:
2057 case GST_RM_AUD_RACP:
2058 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2061 g_assert_not_reached ();
2068 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2069 guint8 * data, GstClockTime timestamp)
2073 GstClockTime ts = timestamp;
2075 if (timestamp == GST_CLOCK_TIME_NONE)
2078 /* only adjust when we have a stream with B frames */
2079 if (stream->format < 0x20200002)
2082 /* Fix timestamp. */
2083 switch (stream->fourcc) {
2084 case GST_RM_VDO_RV10:
2086 case GST_RM_VDO_RV20:
2089 * Bit 1- 2: frame type
2091 * Bit 10-22: sequence number
2094 frame_type = (data[0] >> 6) & 0x03;
2095 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2098 case GST_RM_VDO_RV30:
2102 * Bit 3: skip packet if 1
2103 * Bit 4- 5: frame type
2105 * Bit 13-25: sequence number
2108 frame_type = (data[0] >> 3) & 0x03;
2109 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2112 case GST_RM_VDO_RV40:
2115 * Bit 1: skip packet if 1
2116 * Bit 2- 3: frame type
2118 * Bit 14-26: sequence number
2121 frame_type = (data[0] >> 5) & 0x03;
2122 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2126 goto unknown_version;
2129 switch (frame_type) {
2133 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2135 if (stream->next_ts == -1)
2136 stream->next_ts = timestamp;
2138 timestamp = stream->next_ts;
2139 stream->last_ts = stream->next_ts;
2140 stream->next_ts = ts;
2141 stream->last_seq = stream->next_seq;
2142 stream->next_seq = seq;
2147 GST_LOG_OBJECT (rmdemux, "P frame");
2149 timestamp = stream->last_ts = stream->next_ts;
2150 if (seq < stream->next_seq)
2151 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2153 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2154 stream->last_seq = stream->next_seq;
2155 stream->next_seq = seq;
2160 GST_LOG_OBJECT (rmdemux, "B frame");
2162 if (seq < stream->last_seq) {
2164 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2166 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2171 goto unknown_frame_type;
2175 GST_LOG_OBJECT (rmdemux,
2176 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2177 GST_TIME_ARGS (timestamp));
2184 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2185 ("Unknown version: %i.", stream->version), (NULL));
2186 return GST_FLOW_ERROR;
2191 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2192 frame_type), (NULL));
2193 return GST_FLOW_ERROR;
2197 #define PARSE_NUMBER(data, size, number, label) \
2201 number = GST_READ_UINT16_BE (data); \
2202 if (!(number & 0xc000)) { \
2205 number = GST_READ_UINT32_BE (data); \
2215 static GstFlowReturn
2216 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2217 GstBuffer * in, guint offset, guint16 version,
2218 GstClockTime timestamp, gboolean key)
2221 const guint8 *data, *base;
2224 base = GST_BUFFER_DATA (in);
2225 data = base + offset;
2226 size = GST_BUFFER_SIZE (in) - offset;
2227 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2228 * was previously for that given stream. */
2229 ret = stream->last_flow;
2235 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2236 guint fragment_size;
2237 GstBuffer *fragment;
2239 pkg_header = *data++;
2243 * bit 7: 1=last block in block chain
2244 * bit 6: 1=short header (only one block?)
2246 if ((pkg_header & 0xc0) == 0x40) {
2247 /* skip unknown byte */
2253 if ((pkg_header & 0x40) == 0) {
2254 pkg_subseq = (*data++) & 0x7f;
2261 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2264 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2268 goto not_enough_data;
2270 pkg_seqnum = *data++;
2274 GST_DEBUG_OBJECT (rmdemux,
2275 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2276 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2278 /* calc size of fragment */
2279 if ((pkg_header & 0xc0) == 0x80) {
2280 fragment_size = pkg_offset;
2282 if ((pkg_header & 0xc0) == 0)
2283 fragment_size = size;
2285 fragment_size = pkg_length;
2287 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2289 /* get the fragment */
2290 fragment = gst_buffer_create_sub (in, data - base, fragment_size);
2292 if (pkg_subseq == 1) {
2293 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2294 gst_adapter_clear (stream->adapter);
2295 stream->frag_current = 0;
2296 stream->frag_count = 0;
2297 stream->frag_length = pkg_length;
2298 } else if (pkg_subseq == 0) {
2299 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2300 stream->frag_current = 0;
2301 stream->frag_count = 0;
2302 stream->frag_length = fragment_size;
2305 /* put fragment in adapter */
2306 gst_adapter_push (stream->adapter, fragment);
2307 stream->frag_offset[stream->frag_count] = stream->frag_current;
2308 stream->frag_current += fragment_size;
2309 stream->frag_count++;
2311 if (stream->frag_count > MAX_FRAGS)
2312 goto too_many_fragments;
2314 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2315 stream->frag_current, stream->frag_length);
2317 /* flush fragment when complete */
2318 if (stream->frag_current >= stream->frag_length) {
2324 /* calculate header size, which is:
2325 * 1 byte for the number of fragments - 1
2326 * for each fragment:
2327 * 4 bytes 0x00000001 little endian
2328 * 4 bytes fragment offset
2330 * This is also the matroska header for realvideo, the decoder needs the
2331 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2332 * in front of the data.
2334 header_size = 1 + (8 * (stream->frag_count));
2336 GST_DEBUG_OBJECT (rmdemux,
2337 "fragmented completed. count %d, header_size %u", stream->frag_count,
2340 avail = gst_adapter_available (stream->adapter);
2342 out = gst_buffer_new_and_alloc (header_size + avail);
2343 outdata = GST_BUFFER_DATA (out);
2346 *outdata++ = stream->frag_count - 1;
2347 for (i = 0; i < stream->frag_count; i++) {
2348 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2350 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2354 /* copy packet data after the header now */
2355 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2356 gst_adapter_flush (stream->adapter, avail);
2358 stream->frag_current = 0;
2359 stream->frag_count = 0;
2360 stream->frag_length = 0;
2362 gst_buffer_set_caps (out, GST_PAD_CAPS (stream->pad));
2364 if (timestamp != -1) {
2365 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2366 timestamp -= rmdemux->first_ts;
2370 if (rmdemux->base_ts != -1)
2371 timestamp += rmdemux->base_ts;
2374 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2376 GST_BUFFER_TIMESTAMP (out) = timestamp;
2378 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2379 GST_TIME_ARGS (timestamp));
2381 if (stream->discont) {
2382 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2383 stream->discont = FALSE;
2386 ret = gst_pad_push (stream->pad, out);
2387 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2388 if (ret != GST_FLOW_OK)
2391 timestamp = GST_CLOCK_TIME_NONE;
2393 data += fragment_size;
2394 size -= fragment_size;
2396 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2398 gst_buffer_unref (in);
2405 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2407 gst_buffer_unref (in);
2412 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2413 ("Got more fragments (%u) than can be handled (%u)",
2414 stream->frag_count, MAX_FRAGS), (NULL));
2415 gst_buffer_unref (in);
2416 return GST_FLOW_ERROR;
2420 static GstFlowReturn
2421 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2422 GstBuffer * in, guint offset, guint16 version,
2423 GstClockTime timestamp, gboolean key)
2425 GstFlowReturn ret, cret;
2430 data = GST_BUFFER_DATA (in) + offset;
2431 size = GST_BUFFER_SIZE (in) - offset;
2433 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
2434 GST_BUFFER_OFFSET_NONE, size, GST_PAD_CAPS (stream->pad), &buffer);
2436 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2437 if (ret != GST_FLOW_OK)
2440 memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, size);
2442 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2443 timestamp -= rmdemux->first_ts;
2447 if (rmdemux->base_ts != -1)
2448 timestamp += rmdemux->base_ts;
2450 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2452 if (stream->needs_descrambling) {
2453 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2454 GST_TIME_ARGS (timestamp));
2455 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2457 GST_LOG_OBJECT (rmdemux,
2458 "Pushing buffer of size %d, timestamp %" GST_TIME_FORMAT "to pad %s",
2459 GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (timestamp),
2460 GST_PAD_NAME (stream->pad));
2462 if (stream->discont) {
2463 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2464 stream->discont = FALSE;
2466 ret = gst_pad_push (stream->pad, buffer);
2473 GST_DEBUG_OBJECT (rmdemux, "pad alloc returned %d", ret);
2478 static GstFlowReturn
2479 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2482 GstRMDemuxStream *stream;
2484 GstFlowReturn cret, ret;
2485 GstClockTime timestamp;
2487 guint8 *data, *base;
2491 base = data = GST_BUFFER_DATA (in);
2492 size = GST_BUFFER_SIZE (in);
2495 id = RMDEMUX_GUINT16_GET (data);
2497 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2498 if (!stream || !stream->pad)
2499 goto unknown_stream;
2501 /* timestamp in Msec */
2502 ts = RMDEMUX_GUINT32_GET (data + 2);
2503 timestamp = ts * GST_MSECOND;
2505 gst_segment_set_last_stop (&rmdemux->segment, GST_FORMAT_TIME, timestamp);
2507 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2508 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2509 GST_TIME_ARGS (timestamp), size, version, ts);
2511 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2512 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2513 GST_TIME_ARGS (timestamp));
2514 rmdemux->first_ts = timestamp;
2517 /* skip stream_id and timestamp */
2522 flags = GST_READ_UINT8 (data + 1);
2527 /* version 1 has an extra byte */
2532 key = (flags & 0x02) != 0;
2533 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2535 if (rmdemux->need_newsegment) {
2538 event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
2539 rmdemux->segment.format, rmdemux->segment.start,
2540 rmdemux->segment.stop, rmdemux->segment.time);
2542 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2543 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2545 gst_rmdemux_send_event (rmdemux, event);
2546 rmdemux->need_newsegment = FALSE;
2549 if (stream->pending_tags != NULL) {
2550 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2551 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (rmdemux), stream->pad,
2552 stream->pending_tags);
2553 stream->pending_tags = NULL;
2556 if ((rmdemux->offset + size) <= stream->seek_offset) {
2557 GST_DEBUG_OBJECT (rmdemux,
2558 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2559 stream->id, stream->seek_offset, rmdemux->offset, size);
2564 /* do special headers */
2565 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2567 gst_rmdemux_parse_video_packet (rmdemux, stream, in, data - base,
2568 version, timestamp, key);
2569 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2571 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, data - base,
2572 version, timestamp, key);
2576 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2584 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2591 gst_rmdemux_plugin_init (GstPlugin * plugin)
2593 return gst_element_register (plugin, "rmdemux",
2594 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);