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)
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);
1396 /* RealAudio G2 audio */
1397 case GST_RM_AUD_COOK:
1398 codec_name = "Real Audio G2 (Cook)";
1400 stream->needs_descrambling = TRUE;
1401 stream->subpackets_needed = stream->height;
1402 stream->subpackets = NULL;
1405 /* RALF is lossless */
1406 case GST_RM_AUD_RALF:
1407 /* FIXME: codec_name = */
1408 GST_DEBUG_OBJECT (rmdemux, "RALF");
1409 stream_caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
1412 /* Sipro/ACELP.NET Voice Codec (MIME unknown) */
1413 case GST_RM_AUD_SIPR:
1414 /* FIXME: codec_name = */
1415 stream_caps = gst_caps_new_simple ("audio/x-sipro", NULL);
1419 stream_caps = gst_caps_new_simple ("video/x-unknown-fourcc",
1420 "fourcc", GST_TYPE_FOURCC, stream->fourcc, NULL);
1421 GST_WARNING_OBJECT (rmdemux,
1422 "Unknown audio FOURCC code \"%" GST_FOURCC_FORMAT "\" (%08x)",
1423 GST_FOURCC_ARGS (stream->fourcc), stream->fourcc);
1429 gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
1430 (int) version, NULL);
1434 gst_caps_set_simple (stream_caps,
1435 "flavor", G_TYPE_INT, (int) stream->flavor,
1436 "rate", G_TYPE_INT, (int) stream->rate,
1437 "channels", G_TYPE_INT, (int) stream->n_channels,
1438 "width", G_TYPE_INT, (int) stream->sample_width,
1439 "leaf_size", G_TYPE_INT, (int) stream->leaf_size,
1440 "packet_size", G_TYPE_INT, (int) stream->packet_size,
1441 "height", G_TYPE_INT, (int) stream->height, NULL);
1443 rmdemux->n_audio_streams++;
1445 GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d, freeing it",
1451 GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
1452 rmdemux->streams = g_slist_append (rmdemux->streams, stream);
1453 GST_LOG_OBJECT (rmdemux, "n_streams is now %d",
1454 g_slist_length (rmdemux->streams));
1456 GST_LOG ("stream->pad = %p, stream_caps = %" GST_PTR_FORMAT, stream->pad,
1459 if (stream->pad && stream_caps) {
1461 GST_LOG_OBJECT (rmdemux, "%d bytes of extra data for stream %s",
1462 stream->extra_data_size, GST_PAD_NAME (stream->pad));
1464 /* add codec_data if there is any */
1465 if (stream->extra_data_size > 0) {
1468 buffer = gst_buffer_new_and_alloc (stream->extra_data_size);
1469 memcpy (GST_BUFFER_DATA (buffer), stream->extra_data,
1470 stream->extra_data_size);
1472 gst_caps_set_simple (stream_caps, "codec_data", GST_TYPE_BUFFER,
1475 gst_buffer_unref (buffer);
1478 gst_pad_use_fixed_caps (stream->pad);
1480 gst_pad_set_caps (stream->pad, stream_caps);
1481 gst_pad_set_event_function (stream->pad,
1482 GST_DEBUG_FUNCPTR (gst_rmdemux_src_event));
1483 gst_pad_set_query_type_function (stream->pad,
1484 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query_types));
1485 gst_pad_set_query_function (stream->pad,
1486 GST_DEBUG_FUNCPTR (gst_rmdemux_src_query));
1488 GST_DEBUG_OBJECT (rmdemux, "adding pad %s with caps %" GST_PTR_FORMAT
1489 ", stream_id=%d", GST_PAD_NAME (stream->pad), stream_caps, stream->id);
1490 gst_pad_set_active (stream->pad, TRUE);
1491 gst_element_add_pad (GST_ELEMENT_CAST (rmdemux), stream->pad);
1493 /* save for later, we must send the tags after the newsegment event */
1494 if (codec_name != NULL && codec_tag != NULL) {
1495 stream->pending_tags = gst_tag_list_new ();
1496 gst_tag_list_add (stream->pending_tags, GST_TAG_MERGE_KEEP,
1497 codec_tag, codec_name, NULL);
1504 gst_caps_unref (stream_caps);
1508 re_skip_pascal_string (const guint8 * ptr)
1518 gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const guint8 * data, int length)
1520 GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
1521 GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
1525 gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const guint8 * data, int length)
1527 GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
1528 GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
1529 GST_LOG_OBJECT (rmdemux, "max packet size: %d",
1530 RMDEMUX_GUINT32_GET (data + 8));
1531 rmdemux->avg_packet_size = RMDEMUX_GUINT32_GET (data + 12);
1532 GST_LOG_OBJECT (rmdemux, "avg packet size: %d", rmdemux->avg_packet_size);
1533 rmdemux->num_packets = RMDEMUX_GUINT32_GET (data + 16);
1534 GST_LOG_OBJECT (rmdemux, "number of packets: %d", rmdemux->num_packets);
1536 GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
1537 rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20) * GST_MSECOND;
1539 GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
1540 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 28);
1541 GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
1542 rmdemux->index_offset);
1543 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 32);
1544 GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
1545 rmdemux->data_offset);
1546 GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
1547 GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
1551 gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const guint8 * data, int length)
1553 GstRMDemuxStream *stream;
1554 char *stream1_type_string;
1555 char *stream2_type_string;
1560 stream = g_new0 (GstRMDemuxStream, 1);
1562 stream->id = RMDEMUX_GUINT16_GET (data);
1563 stream->index = NULL;
1564 stream->seek_offset = 0;
1565 stream->last_ts = -1;
1566 stream->next_ts = -1;
1567 stream->last_flow = GST_FLOW_OK;
1568 stream->discont = TRUE;
1569 stream->adapter = gst_adapter_new ();
1570 GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
1573 stream1_type_string = gst_rm_utils_read_string8 (data + offset,
1574 length - offset, &str_len);
1576 stream2_type_string = gst_rm_utils_read_string8 (data + offset,
1577 length - offset, &str_len);
1580 /* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
1582 * - "[The ]Video/Audio Stream" (File produced by an official Real encoder)
1583 * - "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
1585 * so, we should not rely on it to know which stream type it is
1588 GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
1589 GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
1591 if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
1592 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1593 } else if (strcmp (stream2_type_string,
1594 "video/x-pn-multirate-realvideo") == 0) {
1595 stream_type = GST_RMDEMUX_STREAM_VIDEO;
1596 } else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
1597 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1598 } else if (strcmp (stream2_type_string,
1599 "audio/x-pn-multirate-realaudio") == 0) {
1600 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1601 } else if (strcmp (stream2_type_string,
1602 "audio/x-pn-multirate-realaudio-live") == 0) {
1603 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1604 } else if (strcmp (stream2_type_string, "audio/x-ralf-mpeg4-generic") == 0) {
1605 /* Another audio type found in the real testsuite */
1606 stream_type = GST_RMDEMUX_STREAM_AUDIO;
1607 } else if (strcmp (stream1_type_string, "") == 0 &&
1608 strcmp (stream2_type_string, "logical-fileinfo") == 0) {
1609 stream_type = GST_RMDEMUX_STREAM_FILEINFO;
1611 stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
1612 GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
1613 stream1_type_string, stream2_type_string);
1615 g_free (stream1_type_string);
1616 g_free (stream2_type_string);
1620 stream->subtype = stream_type;
1621 switch (stream_type) {
1623 case GST_RMDEMUX_STREAM_VIDEO:
1624 /* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
1625 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
1626 stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
1627 stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
1628 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
1629 stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
1630 stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
1631 stream->extra_data_size = length - (offset + 26);
1632 stream->extra_data = (guint8 *) data + offset + 26;
1633 /* Natural way to represent framerates here requires unsigned 32 bit
1634 * numerator, which we don't have. For the nasty case, approximate...
1637 guint32 numerator = RMDEMUX_GUINT16_GET (data + offset + 22) * 65536 +
1638 RMDEMUX_GUINT16_GET (data + offset + 24);
1639 if (numerator > G_MAXINT) {
1640 stream->framerate_numerator = (gint) (numerator >> 1);
1641 stream->framerate_denominator = 32768;
1643 stream->framerate_numerator = (gint) numerator;
1644 stream->framerate_denominator = 65536;
1648 GST_DEBUG_OBJECT (rmdemux,
1649 "Video stream with fourcc=%" GST_FOURCC_FORMAT
1650 " width=%d height=%d rate=%d framerate=%d/%d subformat=%x format=%x extra_data_size=%d",
1651 GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
1652 stream->rate, stream->framerate_numerator,
1653 stream->framerate_denominator, stream->subformat, stream->format,
1654 stream->extra_data_size);
1656 case GST_RMDEMUX_STREAM_AUDIO:{
1657 stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
1658 GST_INFO ("stream version = %u", stream->version);
1659 switch (stream->version) {
1661 stream->fourcc = GST_RM_AUD_14_4;
1662 stream->packet_size = 20;
1663 stream->rate = 8000;
1664 stream->n_channels = 1;
1665 stream->sample_width = 16;
1667 stream->leaf_size = 0;
1671 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1672 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1673 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1674 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1675 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1676 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
1677 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
1678 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
1679 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
1680 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 69);
1681 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1682 stream->extra_data_size);
1683 if (length - (offset + 73) >= stream->extra_data_size) {
1684 stream->extra_data = (guint8 *) data + offset + 73;
1686 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1687 stream->extra_data_size = 0;
1691 stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
1692 stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
1693 /* stream->frame_size = RMDEMUX_GUINT32_GET (data + offset + 42); */
1694 stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
1695 stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
1696 stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
1697 stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
1698 stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
1699 stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
1700 stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
1701 GST_DEBUG_OBJECT (rmdemux, "%u bytes of extra codec data",
1702 stream->extra_data_size);
1703 if (length - (offset + 78) >= stream->extra_data_size) {
1704 stream->extra_data = (guint8 *) data + offset + 78;
1706 GST_WARNING_OBJECT (rmdemux, "codec data runs beyond MDPR chunk");
1707 stream->extra_data_size = 0;
1711 GST_WARNING_OBJECT (rmdemux, "Unhandled audio stream version %d",
1717 /* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
1718 GST_DEBUG_OBJECT (rmdemux,
1719 "Audio stream with rate=%d sample_width=%d n_channels=%d",
1720 stream->rate, stream->sample_width, stream->n_channels);
1724 case GST_RMDEMUX_STREAM_FILEINFO:
1728 /* Length of this section */
1729 GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
1730 RMDEMUX_GUINT32_GET (data + offset));
1733 /* Unknown : 00 00 00 00 */
1736 /* Number of variables that would follow (loop iterations) */
1737 element_nb = RMDEMUX_GUINT32_GET (data + offset);
1740 while (element_nb) {
1741 /* Category Id : 00 00 00 XX 00 00 */
1745 offset += re_skip_pascal_string (data + offset);
1747 /* Variable Value Type */
1748 /* 00 00 00 00 00 => integer/boolean, preceded by length */
1749 /* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
1752 /* Variable Value */
1753 offset += re_skip_pascal_string (data + offset);
1759 case GST_RMDEMUX_STREAM_UNKNOWN:
1764 gst_rmdemux_add_stream (rmdemux, stream);
1768 gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const guint8 * data, int length)
1773 n = RMDEMUX_GUINT32_GET (data);
1774 id = RMDEMUX_GUINT16_GET (data + 4);
1775 rmdemux->index_offset = RMDEMUX_GUINT32_GET (data + 6);
1777 GST_DEBUG_OBJECT (rmdemux, "Number of indices=%d Stream ID=%d length=%d", n,
1780 /* Point to the next index_stream */
1781 rmdemux->index_stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
1783 /* Return the length of the index */
1788 gst_rmdemux_parse_indx_data (GstRMDemux * rmdemux, const guint8 * data,
1793 GstRMDemuxIndex *index;
1795 /* The number of index records */
1798 if (rmdemux->index_stream == NULL)
1801 /* don't parse the index a second time when operating pull-based and
1802 * reaching the end of the file */
1803 if (rmdemux->index_stream->index_length > 0) {
1804 GST_DEBUG_OBJECT (rmdemux, "Already have an index for this stream");
1808 index = g_malloc (sizeof (GstRMDemuxIndex) * n);
1809 rmdemux->index_stream->index = index;
1810 rmdemux->index_stream->index_length = n;
1812 for (i = 0; i < n; i++) {
1813 index[i].timestamp = RMDEMUX_GUINT32_GET (data + 2) * GST_MSECOND;
1814 index[i].offset = RMDEMUX_GUINT32_GET (data + 6);
1816 GST_DEBUG_OBJECT (rmdemux, "Index found for timestamp=%f (at offset=%x)",
1817 gst_guint64_to_gdouble (index[i].timestamp) / GST_SECOND,
1824 gst_rmdemux_parse_data (GstRMDemux * rmdemux, const guint8 * data, int length)
1826 rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
1827 rmdemux->data_offset = RMDEMUX_GUINT32_GET (data + 4);
1828 rmdemux->chunk_index = 0;
1829 GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets "
1830 "(next data at 0x%08x)", rmdemux->n_chunks, rmdemux->data_offset);
1834 gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const guint8 * data, int length)
1838 tags = gst_rm_utils_read_tags (data, length, gst_rm_utils_read_string16);
1840 gst_element_found_tags (GST_ELEMENT (rmdemux), tags);
1844 static GstFlowReturn
1845 gst_rmdemux_combine_flows (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
1850 /* store the value */
1851 stream->last_flow = ret;
1853 /* if it's success we can return the value right away */
1854 if (GST_FLOW_IS_SUCCESS (ret))
1857 /* any other error that is not-linked can be returned right
1859 if (ret != GST_FLOW_NOT_LINKED)
1862 for (cur = rmdemux->streams; cur; cur = cur->next) {
1863 GstRMDemuxStream *ostream = cur->data;
1865 ret = ostream->last_flow;
1866 /* some other return value (must be SUCCESS but we can return
1867 * other values as well) */
1868 if (ret != GST_FLOW_NOT_LINKED)
1871 /* if we get here, all other pads were unlinked and we return
1872 * NOT_LINKED then */
1878 gst_rmdemux_stream_clear_cached_subpackets (GstRMDemux * rmdemux,
1879 GstRMDemuxStream * stream)
1881 if (stream->subpackets == NULL || stream->subpackets->len == 0)
1884 GST_DEBUG_OBJECT (rmdemux, "discarding %u previously collected subpackets",
1885 stream->subpackets->len);
1886 g_ptr_array_foreach (stream->subpackets, (GFunc) gst_mini_object_unref, NULL);
1887 g_ptr_array_set_size (stream->subpackets, 0);
1890 static GstFlowReturn
1891 gst_rmdemux_descramble_cook_audio (GstRMDemux * rmdemux,
1892 GstRMDemuxStream * stream)
1896 guint packet_size = stream->packet_size;
1897 guint height = stream->subpackets->len;
1898 guint leaf_size = stream->leaf_size;
1901 g_assert (stream->height == height);
1903 GST_LOG ("packet_size = %u, leaf_size = %u, height= %u", packet_size,
1906 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
1907 GST_BUFFER_OFFSET_NONE, height * packet_size,
1908 GST_PAD_CAPS (stream->pad), &outbuf);
1910 if (ret != GST_FLOW_OK)
1913 for (p = 0; p < height; ++p) {
1914 GstBuffer *b = g_ptr_array_index (stream->subpackets, p);
1915 guint8 *b_data = GST_BUFFER_DATA (b);
1918 GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (b);
1920 for (x = 0; x < packet_size / leaf_size; ++x) {
1923 idx = height * x + ((height + 1) / 2) * (p % 2) + (p / 2);
1924 /* GST_LOG ("%3u => %3u", (height * p) + x, idx); */
1925 memcpy (GST_BUFFER_DATA (outbuf) + leaf_size * idx, b_data, leaf_size);
1926 b_data += leaf_size;
1930 /* some decoders, such as realaudiodec, need to be fed in packet units */
1931 for (p = 0; p < height; ++p) {
1934 subbuf = gst_buffer_create_sub (outbuf, p * packet_size, packet_size);
1936 GST_LOG_OBJECT (rmdemux, "pushing buffer timestamp %" GST_TIME_FORMAT,
1937 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (subbuf)));
1939 if (stream->discont) {
1940 GST_BUFFER_FLAG_SET (subbuf, GST_BUFFER_FLAG_DISCONT);
1941 stream->discont = FALSE;
1944 gst_buffer_set_caps (subbuf, GST_PAD_CAPS (stream->pad));
1945 ret = gst_pad_push (stream->pad, subbuf);
1946 if (ret != GST_FLOW_OK)
1950 gst_buffer_unref (outbuf);
1954 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
1959 static GstFlowReturn
1960 gst_rmdemux_descramble_dnet_audio (GstRMDemux * rmdemux,
1961 GstRMDemuxStream * stream)
1965 buf = g_ptr_array_index (stream->subpackets, 0);
1966 g_ptr_array_index (stream->subpackets, 0) = NULL;
1967 g_ptr_array_set_size (stream->subpackets, 0);
1969 buf = gst_rm_utils_descramble_dnet_buffer (buf);
1971 if (stream->discont) {
1972 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
1973 stream->discont = FALSE;
1975 return gst_pad_push (stream->pad, buf);
1978 static GstFlowReturn
1979 gst_rmdemux_descramble_mp4a_audio (GstRMDemux * rmdemux,
1980 GstRMDemuxStream * stream)
1983 GstBuffer *buf, *outbuf;
1984 guint frames, index, i;
1986 GstClockTime timestamp;
1990 buf = g_ptr_array_index (stream->subpackets, 0);
1991 g_ptr_array_index (stream->subpackets, 0) = NULL;
1992 g_ptr_array_set_size (stream->subpackets, 0);
1994 data = GST_BUFFER_DATA (buf);
1995 timestamp = GST_BUFFER_TIMESTAMP (buf);
1997 frames = (data[1] & 0xf0) >> 4;
1998 index = 2 * frames + 2;
2000 for (i = 0; i < frames; i++) {
2001 guint len = (data[i * 2 + 2] << 8) | data[i * 2 + 3];
2003 outbuf = gst_buffer_create_sub (buf, index, len);
2005 GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
2006 gst_buffer_set_caps (outbuf, GST_PAD_CAPS (stream->pad));
2010 if (stream->discont) {
2011 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
2012 stream->discont = FALSE;
2014 res = gst_pad_push (stream->pad, outbuf);
2015 if (res != GST_FLOW_OK)
2018 gst_buffer_unref (buf);
2022 static GstFlowReturn
2023 gst_rmdemux_handle_scrambled_packet (GstRMDemux * rmdemux,
2024 GstRMDemuxStream * stream, GstBuffer * buf, gboolean keyframe)
2028 if (stream->subpackets == NULL)
2029 stream->subpackets = g_ptr_array_sized_new (stream->subpackets_needed);
2031 GST_LOG ("Got subpacket %u/%u, len=%u, key=%d", stream->subpackets->len + 1,
2032 stream->subpackets_needed, GST_BUFFER_SIZE (buf), keyframe);
2034 if (keyframe && stream->subpackets->len > 0) {
2035 gst_rmdemux_stream_clear_cached_subpackets (rmdemux, stream);
2038 g_ptr_array_add (stream->subpackets, buf);
2040 if (stream->subpackets->len < stream->subpackets_needed)
2043 g_assert (stream->subpackets->len >= 1);
2045 switch (stream->fourcc) {
2046 case GST_RM_AUD_DNET:
2047 ret = gst_rmdemux_descramble_dnet_audio (rmdemux, stream);
2049 case GST_RM_AUD_COOK:
2050 ret = gst_rmdemux_descramble_cook_audio (rmdemux, stream);
2052 case GST_RM_AUD_RAAC:
2053 case GST_RM_AUD_RACP:
2054 ret = gst_rmdemux_descramble_mp4a_audio (rmdemux, stream);
2057 g_assert_not_reached ();
2064 gst_rmdemux_fix_timestamp (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2065 guint8 * data, GstClockTime timestamp)
2069 GstClockTime ts = timestamp;
2071 if (timestamp == GST_CLOCK_TIME_NONE)
2074 /* only adjust when we have a stream with B frames */
2075 if (stream->format < 0x20200002)
2078 /* Fix timestamp. */
2079 switch (stream->fourcc) {
2080 case GST_RM_VDO_RV10:
2082 case GST_RM_VDO_RV20:
2085 * Bit 1- 2: frame type
2087 * Bit 10-22: sequence number
2090 frame_type = (data[0] >> 6) & 0x03;
2091 seq = ((data[1] & 0x7f) << 6) + ((data[2] & 0xfc) >> 2);
2094 case GST_RM_VDO_RV30:
2098 * Bit 3: skip packet if 1
2099 * Bit 4- 5: frame type
2101 * Bit 13-25: sequence number
2104 frame_type = (data[0] >> 3) & 0x03;
2105 seq = ((data[1] & 0x0f) << 9) + (data[2] << 1) + ((data[3] & 0x80) >> 7);
2108 case GST_RM_VDO_RV40:
2111 * Bit 1: skip packet if 1
2112 * Bit 2- 3: frame type
2114 * Bit 14-26: sequence number
2117 frame_type = (data[0] >> 5) & 0x03;
2118 seq = ((data[1] & 0x07) << 10) + (data[2] << 2) + ((data[3] & 0xc0) >> 6);
2122 goto unknown_version;
2125 switch (frame_type) {
2129 GST_LOG_OBJECT (rmdemux, "I frame %d", frame_type);
2131 if (stream->next_ts == -1)
2132 stream->next_ts = timestamp;
2134 timestamp = stream->next_ts;
2135 stream->last_ts = stream->next_ts;
2136 stream->next_ts = ts;
2137 stream->last_seq = stream->next_seq;
2138 stream->next_seq = seq;
2143 GST_LOG_OBJECT (rmdemux, "P frame");
2145 timestamp = stream->last_ts = stream->next_ts;
2146 if (seq < stream->next_seq)
2147 stream->next_ts += (seq + 0x2000 - stream->next_seq) * GST_MSECOND;
2149 stream->next_ts += (seq - stream->next_seq) * GST_MSECOND;
2150 stream->last_seq = stream->next_seq;
2151 stream->next_seq = seq;
2156 GST_LOG_OBJECT (rmdemux, "B frame");
2158 if (seq < stream->last_seq) {
2160 (seq + 0x2000 - stream->last_seq) * GST_MSECOND + stream->last_ts;
2162 timestamp = (seq - stream->last_seq) * GST_MSECOND + stream->last_ts;
2167 goto unknown_frame_type;
2171 GST_LOG_OBJECT (rmdemux,
2172 "timestamp %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT, GST_TIME_ARGS (ts),
2173 GST_TIME_ARGS (timestamp));
2180 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2181 ("Unknown version: %i.", stream->version), (NULL));
2182 return GST_FLOW_ERROR;
2187 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE, ("Unknown frame type %d.",
2188 frame_type), (NULL));
2189 return GST_FLOW_ERROR;
2193 #define PARSE_NUMBER(data, size, number, label) \
2197 number = GST_READ_UINT16_BE (data); \
2198 if (!(number & 0xc000)) { \
2201 number = GST_READ_UINT32_BE (data); \
2211 static GstFlowReturn
2212 gst_rmdemux_parse_video_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2213 GstBuffer * in, guint offset, guint16 version,
2214 GstClockTime timestamp, gboolean key)
2217 const guint8 *data, *base;
2220 base = GST_BUFFER_DATA (in);
2221 data = base + offset;
2222 size = GST_BUFFER_SIZE (in) - offset;
2223 /* if size <= 2, we want this method to return the same GstFlowReturn as it
2224 * was previously for that given stream. */
2225 ret = stream->last_flow;
2231 guint pkg_subseq = 0, pkg_seqnum = G_MAXUINT;
2232 guint fragment_size;
2233 GstBuffer *fragment;
2235 pkg_header = *data++;
2239 * bit 7: 1=last block in block chain
2240 * bit 6: 1=short header (only one block?)
2242 if ((pkg_header & 0xc0) == 0x40) {
2243 /* skip unknown byte */
2249 if ((pkg_header & 0x40) == 0) {
2250 pkg_subseq = (*data++) & 0x7f;
2257 PARSE_NUMBER (data, size, pkg_length, not_enough_data);
2260 PARSE_NUMBER (data, size, pkg_offset, not_enough_data);
2264 goto not_enough_data;
2266 pkg_seqnum = *data++;
2270 GST_DEBUG_OBJECT (rmdemux,
2271 "seq %d, subseq %d, offset %d, length %d, size %d, header %02x",
2272 pkg_seqnum, pkg_subseq, pkg_offset, pkg_length, size, pkg_header);
2274 /* calc size of fragment */
2275 if ((pkg_header & 0xc0) == 0x80) {
2276 fragment_size = pkg_offset;
2278 if ((pkg_header & 0xc0) == 0)
2279 fragment_size = size;
2281 fragment_size = pkg_length;
2283 GST_DEBUG_OBJECT (rmdemux, "fragment size %d", fragment_size);
2285 /* get the fragment */
2286 fragment = gst_buffer_create_sub (in, data - base, fragment_size);
2288 if (pkg_subseq == 1) {
2289 GST_DEBUG_OBJECT (rmdemux, "start new fragment");
2290 gst_adapter_clear (stream->adapter);
2291 stream->frag_current = 0;
2292 stream->frag_count = 0;
2293 stream->frag_length = pkg_length;
2294 } else if (pkg_subseq == 0) {
2295 GST_DEBUG_OBJECT (rmdemux, "non fragmented packet");
2296 stream->frag_current = 0;
2297 stream->frag_count = 0;
2298 stream->frag_length = fragment_size;
2301 /* put fragment in adapter */
2302 gst_adapter_push (stream->adapter, fragment);
2303 stream->frag_offset[stream->frag_count] = stream->frag_current;
2304 stream->frag_current += fragment_size;
2305 stream->frag_count++;
2307 if (stream->frag_count > MAX_FRAGS)
2308 goto too_many_fragments;
2310 GST_DEBUG_OBJECT (rmdemux, "stored fragment in adapter %d/%d",
2311 stream->frag_current, stream->frag_length);
2313 /* flush fragment when complete */
2314 if (stream->frag_current >= stream->frag_length) {
2320 /* calculate header size, which is:
2321 * 1 byte for the number of fragments - 1
2322 * for each fragment:
2323 * 4 bytes 0x00000001 little endian
2324 * 4 bytes fragment offset
2326 * This is also the matroska header for realvideo, the decoder needs the
2327 * fragment offsets, both in ffmpeg and real .so, so we just give it that
2328 * in front of the data.
2330 header_size = 1 + (8 * (stream->frag_count));
2332 GST_DEBUG_OBJECT (rmdemux,
2333 "fragmented completed. count %d, header_size %u", stream->frag_count,
2336 avail = gst_adapter_available (stream->adapter);
2338 out = gst_buffer_new_and_alloc (header_size + avail);
2339 outdata = GST_BUFFER_DATA (out);
2342 *outdata++ = stream->frag_count - 1;
2343 for (i = 0; i < stream->frag_count; i++) {
2344 GST_WRITE_UINT32_LE (outdata, 0x00000001);
2346 GST_WRITE_UINT32_LE (outdata, stream->frag_offset[i]);
2350 /* copy packet data after the header now */
2351 gst_adapter_copy (stream->adapter, outdata, 0, avail);
2352 gst_adapter_flush (stream->adapter, avail);
2354 stream->frag_current = 0;
2355 stream->frag_count = 0;
2356 stream->frag_length = 0;
2358 gst_buffer_set_caps (out, GST_PAD_CAPS (stream->pad));
2360 if (timestamp != -1) {
2361 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2362 timestamp -= rmdemux->first_ts;
2366 if (rmdemux->base_ts != -1)
2367 timestamp += rmdemux->base_ts;
2370 gst_rmdemux_fix_timestamp (rmdemux, stream, outdata, timestamp);
2372 GST_BUFFER_TIMESTAMP (out) = timestamp;
2374 GST_LOG_OBJECT (rmdemux, "pushing timestamp %" GST_TIME_FORMAT,
2375 GST_TIME_ARGS (timestamp));
2377 if (stream->discont) {
2378 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
2379 stream->discont = FALSE;
2382 ret = gst_pad_push (stream->pad, out);
2383 ret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2384 if (ret != GST_FLOW_OK)
2387 timestamp = GST_CLOCK_TIME_NONE;
2389 data += fragment_size;
2390 size -= fragment_size;
2392 GST_DEBUG_OBJECT (rmdemux, "%d bytes left", size);
2394 gst_buffer_unref (in);
2401 GST_ELEMENT_WARNING (rmdemux, STREAM, DECODE, ("Skipping bad packet."),
2403 gst_buffer_unref (in);
2408 GST_ELEMENT_ERROR (rmdemux, STREAM, DECODE,
2409 ("Got more fragments (%u) than can be handled (%u)",
2410 stream->frag_count, MAX_FRAGS), (NULL));
2411 gst_buffer_unref (in);
2412 return GST_FLOW_ERROR;
2416 static GstFlowReturn
2417 gst_rmdemux_parse_audio_packet (GstRMDemux * rmdemux, GstRMDemuxStream * stream,
2418 GstBuffer * in, guint offset, guint16 version,
2419 GstClockTime timestamp, gboolean key)
2421 GstFlowReturn ret, cret;
2426 data = GST_BUFFER_DATA (in) + offset;
2427 size = GST_BUFFER_SIZE (in) - offset;
2429 ret = gst_pad_alloc_buffer_and_set_caps (stream->pad,
2430 GST_BUFFER_OFFSET_NONE, size, GST_PAD_CAPS (stream->pad), &buffer);
2432 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2433 if (ret != GST_FLOW_OK)
2436 memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, size);
2438 if (rmdemux->first_ts != -1 && timestamp > rmdemux->first_ts)
2439 timestamp -= rmdemux->first_ts;
2443 if (rmdemux->base_ts != -1)
2444 timestamp += rmdemux->base_ts;
2446 GST_BUFFER_TIMESTAMP (buffer) = timestamp;
2448 if (stream->needs_descrambling) {
2449 GST_LOG_OBJECT (rmdemux, "descramble timestamp %" GST_TIME_FORMAT,
2450 GST_TIME_ARGS (timestamp));
2451 ret = gst_rmdemux_handle_scrambled_packet (rmdemux, stream, buffer, key);
2453 GST_LOG_OBJECT (rmdemux,
2454 "Pushing buffer of size %d, timestamp %" GST_TIME_FORMAT "to pad %s",
2455 GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (timestamp),
2456 GST_PAD_NAME (stream->pad));
2458 if (stream->discont) {
2459 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
2460 stream->discont = FALSE;
2462 ret = gst_pad_push (stream->pad, buffer);
2469 GST_DEBUG_OBJECT (rmdemux, "pad alloc returned %d", ret);
2474 static GstFlowReturn
2475 gst_rmdemux_parse_packet (GstRMDemux * rmdemux, GstBuffer * in, guint16 version)
2478 GstRMDemuxStream *stream;
2480 GstFlowReturn cret, ret;
2481 GstClockTime timestamp;
2483 guint8 *data, *base;
2487 base = data = GST_BUFFER_DATA (in);
2488 size = GST_BUFFER_SIZE (in);
2491 id = RMDEMUX_GUINT16_GET (data);
2493 stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
2494 if (!stream || !stream->pad)
2495 goto unknown_stream;
2497 /* timestamp in Msec */
2498 ts = RMDEMUX_GUINT32_GET (data + 2);
2499 timestamp = ts * GST_MSECOND;
2501 gst_segment_set_last_stop (&rmdemux->segment, GST_FORMAT_TIME, timestamp);
2503 GST_LOG_OBJECT (rmdemux, "Parsing a packet for stream=%d, timestamp=%"
2504 GST_TIME_FORMAT ", size %u, version=%d, ts=%u", id,
2505 GST_TIME_ARGS (timestamp), size, version, ts);
2507 if (rmdemux->first_ts == GST_CLOCK_TIME_NONE) {
2508 GST_DEBUG_OBJECT (rmdemux, "First timestamp: %" GST_TIME_FORMAT,
2509 GST_TIME_ARGS (timestamp));
2510 rmdemux->first_ts = timestamp;
2513 /* skip stream_id and timestamp */
2518 flags = GST_READ_UINT8 (data + 1);
2523 /* version 1 has an extra byte */
2528 key = (flags & 0x02) != 0;
2529 GST_DEBUG_OBJECT (rmdemux, "flags %d, Keyframe %d", flags, key);
2531 if (rmdemux->need_newsegment) {
2534 event = gst_event_new_new_segment (FALSE, rmdemux->segment.rate,
2535 rmdemux->segment.format, rmdemux->segment.start,
2536 rmdemux->segment.stop, rmdemux->segment.time);
2538 GST_DEBUG_OBJECT (rmdemux, "sending NEWSEGMENT event, segment.start= %"
2539 GST_TIME_FORMAT, GST_TIME_ARGS (rmdemux->segment.start));
2541 gst_rmdemux_send_event (rmdemux, event);
2542 rmdemux->need_newsegment = FALSE;
2545 if (stream->pending_tags != NULL) {
2546 GST_LOG_OBJECT (stream->pad, "tags %" GST_PTR_FORMAT, stream->pending_tags);
2547 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (rmdemux), stream->pad,
2548 stream->pending_tags);
2549 stream->pending_tags = NULL;
2552 if ((rmdemux->offset + size) <= stream->seek_offset) {
2553 GST_DEBUG_OBJECT (rmdemux,
2554 "Stream %d is skipping: seek_offset=%d, offset=%d, size=%u",
2555 stream->id, stream->seek_offset, rmdemux->offset, size);
2560 /* do special headers */
2561 if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
2563 gst_rmdemux_parse_video_packet (rmdemux, stream, in, data - base,
2564 version, timestamp, key);
2565 } else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
2567 gst_rmdemux_parse_audio_packet (rmdemux, stream, in, data - base,
2568 version, timestamp, key);
2572 cret = gst_rmdemux_combine_flows (rmdemux, stream, ret);
2580 GST_WARNING_OBJECT (rmdemux, "No stream for stream id %d in parsing "
2587 gst_rmdemux_plugin_init (GstPlugin * plugin)
2589 return gst_element_register (plugin, "rmdemux",
2590 GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);