2 * Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
3 * Copyright (C) 2006 Andy Wingo <wingo@pobox.com>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
22 * SECTION:element-theoraparse
24 * @see_also: theoradec, oggdemux, vorbisparse
26 * The theoraparse element will parse the header packets of the Theora
27 * stream and put them as the streamheader in the caps. This is used in the
28 * multifdsink case where you want to stream live theora streams to multiple
29 * clients, each client has to receive the streamheaders first before they can
30 * consume the theora packets.
32 * This element also makes sure that the buffers that it pushes out are properly
33 * timestamped and that their offset and offset_end are set. The buffers that
34 * theoraparse outputs have all of the metadata that oggmux expects to receive,
35 * which allows you to (for example) remux an ogg/theora file.
37 * In addition, this element allows you to fix badly synchronized streams. You
38 * pass in an array of (granule time, buffer time) synchronization points via
39 * the synchronization-points GValueArray property, and this element will adjust
40 * the granulepos values that it outputs. The adjustment will be made by
41 * offsetting all buffers that it outputs by a specified amount, and updating
42 * that offset from the value array whenever a keyframe is processed.
44 * ## Example pipelines
46 * gst-launch-1.0 -v filesrc location=video.ogg ! oggdemux ! theoraparse ! fakesink
48 * This pipeline shows that the streamheader is set in the caps, and that each
49 * buffer has the timestamp, duration, offset, and offset_end set.
51 * gst-launch-1.0 filesrc location=video.ogg ! oggdemux ! theoraparse \
52 * ! oggmux ! filesink location=video-remuxed.ogg
54 * This pipeline shows remuxing. video-remuxed.ogg might not be exactly the same
55 * as video.ogg, but they should produce exactly the same decoded data.
59 /* FIXME 0.11: suppress warnings for deprecated API such as GValueArray
60 * with newer GLib versions (>= 2.31.0) */
61 #define GLIB_DISABLE_DEPRECATION_WARNINGS
67 #include "gsttheoraparse.h"
69 #define GST_CAT_DEFAULT theoraparse_debug
70 GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
72 static GstStaticPadTemplate theora_parse_sink_factory =
73 GST_STATIC_PAD_TEMPLATE ("sink",
76 GST_STATIC_CAPS ("video/x-theora")
79 static GstStaticPadTemplate theora_parse_src_factory =
80 GST_STATIC_PAD_TEMPLATE ("src",
83 GST_STATIC_CAPS ("video/x-theora")
89 PROP_SYNCHRONIZATION_POINTS
92 #define gst_theora_parse_parent_class parent_class
93 G_DEFINE_TYPE (GstTheoraParse, gst_theora_parse, GST_TYPE_ELEMENT);
95 static void theora_parse_dispose (GObject * object);
98 static void theora_parse_get_property (GObject * object, guint prop_id,
99 GValue * value, GParamSpec * pspec);
100 static void theora_parse_set_property (GObject * object, guint prop_id,
101 const GValue * value, GParamSpec * pspec);
104 static GstFlowReturn theora_parse_chain (GstPad * pad, GstObject * parent,
106 static GstStateChangeReturn theora_parse_change_state (GstElement * element,
107 GstStateChange transition);
108 static gboolean theora_parse_sink_event (GstPad * pad, GstObject * parent,
110 static gboolean theora_parse_src_query (GstPad * pad, GstObject * parent,
114 gst_theora_parse_class_init (GstTheoraParseClass * klass)
116 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
117 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
119 gobject_class->dispose = theora_parse_dispose;
122 gobject_class->get_property = theora_parse_get_property;
123 gobject_class->set_property = theora_parse_set_property;
126 * GstTheoraParse:sychronization-points
128 * An array of (granuletime, buffertime) pairs
130 g_object_class_install_property (gobject_class, PROP_SYNCHRONIZATION_POINTS,
131 g_param_spec_value_array ("synchronization-points",
132 "Synchronization points",
133 "An array of (granuletime, buffertime) pairs",
134 g_param_spec_uint64 ("time", "Time",
135 "Time (either granuletime or buffertime)", 0, G_MAXUINT64, 0,
136 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS),
137 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
140 gst_element_class_add_static_pad_template (gstelement_class,
141 &theora_parse_src_factory);
142 gst_element_class_add_static_pad_template (gstelement_class,
143 &theora_parse_sink_factory);
144 gst_element_class_set_static_metadata (gstelement_class,
145 "Theora video parser", "Codec/Parser/Video", "parse raw theora streams",
146 "Andy Wingo <wingo@pobox.com>");
148 gstelement_class->change_state = theora_parse_change_state;
150 GST_DEBUG_CATEGORY_INIT (theoraparse_debug, "theoraparse", 0,
155 gst_theora_parse_init (GstTheoraParse * parse)
158 gst_pad_new_from_static_template (&theora_parse_sink_factory, "sink");
159 gst_pad_set_chain_function (parse->sinkpad, theora_parse_chain);
160 gst_pad_set_event_function (parse->sinkpad, theora_parse_sink_event);
161 gst_element_add_pad (GST_ELEMENT (parse), parse->sinkpad);
164 gst_pad_new_from_static_template (&theora_parse_src_factory, "src");
165 gst_pad_set_query_function (parse->srcpad, theora_parse_src_query);
166 gst_element_add_pad (GST_ELEMENT (parse), parse->srcpad);
170 theora_parse_dispose (GObject * object)
172 GstTheoraParse *parse = GST_THEORA_PARSE (object);
174 g_free (parse->times);
177 G_OBJECT_CLASS (parent_class)->dispose (object);
182 theora_parse_set_property (GObject * object, guint prop_id,
183 const GValue * value, GParamSpec * pspec)
185 GstTheoraParse *parse = GST_THEORA_PARSE (object);
188 case PROP_SYNCHRONIZATION_POINTS:
193 array = g_value_get_boxed (value);
196 if (array->n_values % 2)
199 g_free (parse->times);
200 parse->times = g_new (GstClockTime, array->n_values);
201 parse->npairs = array->n_values / 2;
202 for (i = 0; i < array->n_values; i++)
203 parse->times[i] = g_value_get_uint64 (&array->values[i]);
205 g_free (parse->times);
211 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
219 g_critical ("expected an even number of time values for "
220 "synchronization-points");
226 theora_parse_get_property (GObject * object, guint prop_id,
227 GValue * value, GParamSpec * pspec)
229 GstTheoraParse *parse = GST_THEORA_PARSE (object);
232 case PROP_SYNCHRONIZATION_POINTS:
234 GValueArray *array = NULL;
237 array = g_value_array_new (parse->npairs * 2);
239 for (i = 0; i < parse->npairs; i++) {
242 g_value_init (&v, G_TYPE_UINT64);
243 g_value_set_uint64 (&v, parse->times[i * 2]);
244 g_value_array_append (array, &v);
245 g_value_set_uint64 (&v, parse->times[i * 2 + 1]);
246 g_value_array_append (array, &v);
250 g_value_take_boxed (value, array);
254 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
261 theora_parse_set_header_on_caps (GstTheoraParse * parse, GstCaps * caps)
264 GstStructure *structure;
266 GValue array = { 0 };
267 GValue value = { 0 };
269 bufs = parse->streamheader;
270 structure = gst_caps_get_structure (caps, 0);
271 g_value_init (&array, GST_TYPE_ARRAY);
273 for (i = 0; i < 3; i++) {
277 bufs[i] = gst_buffer_make_writable (bufs[i]);
278 GST_BUFFER_FLAG_SET (bufs[i], GST_BUFFER_FLAG_HEADER);
280 g_value_init (&value, GST_TYPE_BUFFER);
281 gst_value_set_buffer (&value, bufs[i]);
282 gst_value_array_append_value (&array, &value);
283 g_value_unset (&value);
286 gst_structure_take_value (structure, "streamheader", &array);
289 /* two tasks to do here: set the streamheader on the caps, and use libtheora to
292 theora_parse_set_streamheader (GstTheoraParse * parse)
296 guint32 bitstream_version;
297 th_setup_info *setup = NULL;
299 g_assert (!parse->streamheader_received);
301 caps = gst_caps_make_writable (gst_pad_query_caps (parse->srcpad, NULL));
302 theora_parse_set_header_on_caps (parse, caps);
303 GST_DEBUG_OBJECT (parse, "here are the caps: %" GST_PTR_FORMAT, caps);
304 gst_pad_set_caps (parse->srcpad, caps);
305 gst_caps_unref (caps);
307 for (i = 0; i < 3; i++) {
313 buf = parse->streamheader[i];
317 gst_buffer_map (buf, &map, GST_MAP_READ);
318 packet.packet = map.data;
319 packet.bytes = map.size;
320 packet.granulepos = GST_BUFFER_OFFSET_END (buf);
321 packet.packetno = i + 1;
323 packet.b_o_s = (i == 0);
324 ret = th_decode_headerin (&parse->info, &parse->comment, &setup, &packet);
325 gst_buffer_unmap (buf, &map);
327 GST_WARNING_OBJECT (parse, "Failed to decode Theora header %d: %d",
332 th_setup_free (setup);
335 parse->fps_n = parse->info.fps_numerator;
336 parse->fps_d = parse->info.fps_denominator;
337 parse->shift = parse->info.keyframe_granule_shift;
339 /* With libtheora-1.0beta1 the granulepos scheme was changed:
340 * where earlier the granulepos referred to the index/beginning
341 * of a frame, it now refers to the end, which matches the use
342 * in vorbis/speex. We check the bitstream version from the header so
343 * we know which way to interpret the incoming granuepos
345 bitstream_version = (parse->info.version_major << 16) |
346 (parse->info.version_minor << 8) | parse->info.version_subminor;
347 parse->is_old_bitstream = (bitstream_version <= 0x00030200);
349 parse->streamheader_received = TRUE;
353 theora_parse_drain_event_queue (GstTheoraParse * parse)
355 while (parse->event_queue->length) {
358 event = GST_EVENT_CAST (g_queue_pop_head (parse->event_queue));
359 gst_pad_event_default (parse->sinkpad, GST_OBJECT_CAST (parse), event);
364 theora_parse_push_headers (GstTheoraParse * parse)
368 if (!parse->streamheader_received)
369 theora_parse_set_streamheader (parse);
371 theora_parse_drain_event_queue (parse);
373 /* ignore return values, we pass along the result of pushing data packets only
375 for (i = 0; i < 3; i++) {
378 if ((buf = parse->streamheader[i])) {
379 gst_pad_push (parse->srcpad, buf);
380 parse->streamheader[i] = NULL;
386 theora_parse_clear_queue (GstTheoraParse * parse)
388 while (parse->buffer_queue->length) {
391 buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
392 gst_buffer_unref (buf);
394 while (parse->event_queue->length) {
397 event = GST_EVENT_CAST (g_queue_pop_head (parse->event_queue));
398 gst_event_unref (event);
403 make_granulepos (GstTheoraParse * parse, gint64 keyframe, gint64 frame)
409 /* If using newer theora, offset the granulepos by +1, see comment in
410 * theora_parse_set_streamheader.
412 * We don't increment keyframe directly, as internally we always index frames
413 * starting from 0 and we do some sanity checking below. */
414 if (!parse->is_old_bitstream)
415 iframe = keyframe + 1;
419 g_return_val_if_fail (frame >= keyframe, -1);
420 g_return_val_if_fail (frame - keyframe < 1 << parse->shift, -1);
422 return (iframe << parse->shift) + (frame - keyframe);
426 parse_granulepos (GstTheoraParse * parse, gint64 granulepos,
427 gint64 * keyframe, gint64 * frame)
431 kf = granulepos >> parse->shift;
432 /* If using newer theora, offset the granulepos by -1, see comment
433 * in theora_parse_set_streamheader */
434 if (!parse->is_old_bitstream)
439 *frame = kf + (granulepos & ((1 << parse->shift) - 1));
443 is_keyframe (GstBuffer * buf)
448 size = gst_buffer_get_size (buf);
452 gst_buffer_extract (buf, 0, data, 1);
454 return ((data[0] & 0x40) == 0);
458 theora_parse_munge_granulepos (GstTheoraParse * parse, GstBuffer * buf,
459 gint64 keyframe, gint64 frame)
462 GstClockTimeDiff time_diff;
464 if (keyframe == frame) {
467 /* update granule_offset */
468 for (i = 0; i < parse->npairs; i++) {
469 if (parse->times[i * 2] >= GST_BUFFER_OFFSET (buf))
473 /* time_diff gets reset below */
474 time_diff = parse->times[i * 2 - 1] - parse->times[i * 2 - 2];
475 parse->granule_offset = gst_util_uint64_scale (time_diff,
476 parse->fps_n, parse->fps_d * GST_SECOND);
477 parse->granule_offset <<= parse->shift;
481 frames_diff = parse->granule_offset >> parse->shift;
482 time_diff = gst_util_uint64_scale_int (GST_SECOND * frames_diff,
483 parse->fps_d, parse->fps_n);
485 GST_DEBUG_OBJECT (parse, "offsetting theora stream by %" G_GINT64_FORMAT
486 " frames (%" GST_TIME_FORMAT ")", frames_diff, GST_TIME_ARGS (time_diff));
488 GST_BUFFER_OFFSET_END (buf) += parse->granule_offset;
489 GST_BUFFER_OFFSET (buf) += time_diff;
490 GST_BUFFER_TIMESTAMP (buf) += time_diff;
494 theora_parse_push_buffer (GstTheoraParse * parse, GstBuffer * buf,
495 gint64 keyframe, gint64 frame)
498 GstClockTime this_time, next_time;
500 this_time = gst_util_uint64_scale_int (GST_SECOND * frame,
501 parse->fps_d, parse->fps_n);
503 next_time = gst_util_uint64_scale_int (GST_SECOND * (frame + 1),
504 parse->fps_d, parse->fps_n);
506 GST_BUFFER_OFFSET_END (buf) = make_granulepos (parse, keyframe, frame);
507 GST_BUFFER_OFFSET (buf) = this_time;
508 GST_BUFFER_TIMESTAMP (buf) = this_time;
509 GST_BUFFER_DURATION (buf) = next_time - this_time;
512 theora_parse_munge_granulepos (parse, buf, keyframe, frame);
514 GST_DEBUG_OBJECT (parse, "pushing buffer with granulepos %" G_GINT64_FORMAT
515 "|%" G_GINT64_FORMAT, keyframe, frame - keyframe);
517 return gst_pad_push (parse->srcpad, buf);
521 theora_parse_drain_queue_prematurely (GstTheoraParse * parse)
523 GstFlowReturn ret = GST_FLOW_OK;
525 /* got an EOS event, make sure to push out any buffers that were in the queue
526 * -- won't normally be the case, but this catches the
527 * didn't-get-a-granulepos-on-the-last-packet case. Assuming a continuous
530 GST_DEBUG_OBJECT (parse, "got EOS, draining queue");
532 /* if we get an eos before pushing the streamheaders, drain our events before
534 theora_parse_drain_event_queue (parse);
536 while (!g_queue_is_empty (parse->buffer_queue)) {
539 buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
543 if (is_keyframe (buf))
544 /* we have a keyframe */
545 parse->prev_keyframe = parse->prev_frame;
547 GST_BUFFER_FLAGS (buf) |= GST_BUFFER_FLAG_DELTA_UNIT;
549 if (parse->prev_keyframe < 0) {
550 if (GST_BUFFER_OFFSET_END_IS_VALID (buf)) {
551 parse_granulepos (parse, GST_BUFFER_OFFSET_END (buf),
552 &parse->prev_keyframe, NULL);
554 /* No previous keyframe known; can't extract one from this frame. That
555 * means we can't do any valid output for this frame, just continue to
558 gst_buffer_unref (buf);
563 ret = theora_parse_push_buffer (parse, buf, parse->prev_keyframe,
566 if (ret != GST_FLOW_OK)
575 theora_parse_drain_queue (GstTheoraParse * parse, gint64 granulepos)
577 GstFlowReturn ret = GST_FLOW_OK;
578 gint64 keyframe, prev_frame, frame;
580 parse_granulepos (parse, granulepos, &keyframe, &frame);
582 GST_DEBUG ("draining queue of length %d",
583 g_queue_get_length (parse->buffer_queue));
585 GST_LOG_OBJECT (parse, "gp %" G_GINT64_FORMAT ", kf %" G_GINT64_FORMAT
586 ", frame %" G_GINT64_FORMAT, granulepos, keyframe, frame);
588 prev_frame = frame - g_queue_get_length (parse->buffer_queue);
590 GST_LOG_OBJECT (parse,
591 "new prev %" G_GINT64_FORMAT ", prev %" G_GINT64_FORMAT, prev_frame,
594 if (prev_frame < parse->prev_frame) {
595 GST_WARNING ("jumped %" G_GINT64_FORMAT
596 " frames backwards! not sure what to do here",
597 parse->prev_frame - prev_frame);
598 parse->prev_frame = prev_frame;
599 } else if (prev_frame > parse->prev_frame) {
600 GST_INFO ("discontinuity detected (%" G_GINT64_FORMAT
601 " frames)", prev_frame - parse->prev_frame);
602 if (keyframe <= prev_frame && keyframe > parse->prev_keyframe)
603 parse->prev_keyframe = keyframe;
604 parse->prev_frame = prev_frame;
607 while (!g_queue_is_empty (parse->buffer_queue)) {
611 g_assert (parse->prev_frame >= 0);
613 buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
615 if (is_keyframe (buf))
616 /* we have a keyframe */
617 parse->prev_keyframe = parse->prev_frame;
619 GST_BUFFER_FLAGS (buf) |= GST_BUFFER_FLAG_DELTA_UNIT;
621 ret = theora_parse_push_buffer (parse, buf, parse->prev_keyframe,
624 if (ret != GST_FLOW_OK)
633 theora_parse_queue_buffer (GstTheoraParse * parse, GstBuffer * buf)
635 GstFlowReturn ret = GST_FLOW_OK;
637 buf = gst_buffer_make_writable (buf);
639 g_queue_push_tail (parse->buffer_queue, buf);
641 if (GST_BUFFER_OFFSET_END_IS_VALID (buf)) {
642 if (parse->prev_keyframe < 0) {
643 parse_granulepos (parse, GST_BUFFER_OFFSET_END (buf),
644 &parse->prev_keyframe, NULL);
646 ret = theora_parse_drain_queue (parse, GST_BUFFER_OFFSET_END (buf));
653 theora_parse_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
656 GstTheoraParse *parse;
659 gboolean have_header;
661 parse = GST_THEORA_PARSE (parent);
665 gst_buffer_map (buffer, &map, GST_MAP_READ);
666 header = map.data[0];
667 gst_buffer_unmap (buffer, &map);
675 if (parse->send_streamheader) {
676 /* we need to collect the headers still */
677 /* so put it on the streamheader list and return */
678 if (header >= 0x80 && header <= 0x82)
679 parse->streamheader[header - 0x80] = buffer;
683 /* data packet, push the headers we collected before */
684 if (parse->send_streamheader) {
685 theora_parse_push_headers (parse);
686 parse->send_streamheader = FALSE;
689 ret = theora_parse_queue_buffer (parse, buffer);
696 theora_parse_queue_event (GstTheoraParse * parse, GstEvent * event)
698 g_queue_push_tail (parse->event_queue, event);
703 theora_parse_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
706 GstTheoraParse *parse;
708 parse = GST_THEORA_PARSE (parent);
710 switch (GST_EVENT_TYPE (event)) {
711 case GST_EVENT_FLUSH_STOP:
712 theora_parse_clear_queue (parse);
713 parse->prev_keyframe = -1;
714 parse->prev_frame = -1;
715 ret = gst_pad_event_default (pad, parent, event);
718 theora_parse_drain_queue_prematurely (parse);
719 ret = gst_pad_event_default (pad, parent, event);
722 if (parse->send_streamheader && GST_EVENT_IS_SERIALIZED (event)
723 && GST_EVENT_TYPE (event) > GST_EVENT_CAPS)
724 ret = theora_parse_queue_event (parse, event);
726 ret = gst_pad_event_default (pad, parent, event);
734 theora_parse_src_convert (GstPad * pad,
735 GstFormat src_format, gint64 src_value,
736 GstFormat * dest_format, gint64 * dest_value)
739 GstTheoraParse *parse;
742 if (src_format == *dest_format) {
743 *dest_value = src_value;
747 parse = GST_THEORA_PARSE (gst_pad_get_parent (pad));
749 /* we need the info part before we can done something */
750 if (!parse->streamheader_received)
753 switch (src_format) {
754 case GST_FORMAT_BYTES:
755 switch (*dest_format) {
756 case GST_FORMAT_DEFAULT:
757 *dest_value = gst_util_uint64_scale_int (src_value, 2,
758 parse->info.pic_height * parse->info.pic_width * 3);
760 case GST_FORMAT_TIME:
761 /* seems like a rather silly conversion, implement me if you like */
766 case GST_FORMAT_TIME:
767 switch (*dest_format) {
768 case GST_FORMAT_BYTES:
769 scale = 3 * (parse->info.pic_width * parse->info.pic_height) / 2;
770 case GST_FORMAT_DEFAULT:
771 *dest_value = scale * gst_util_uint64_scale (src_value,
772 parse->info.fps_numerator,
773 parse->info.fps_denominator * GST_SECOND);
776 GST_DEBUG_OBJECT (parse, "cannot convert to format %s",
777 gst_format_get_name (*dest_format));
781 case GST_FORMAT_DEFAULT:
782 switch (*dest_format) {
783 case GST_FORMAT_TIME:
784 *dest_value = gst_util_uint64_scale (src_value,
785 GST_SECOND * parse->info.fps_denominator,
786 parse->info.fps_numerator);
788 case GST_FORMAT_BYTES:
789 *dest_value = gst_util_uint64_scale_int (src_value,
790 3 * parse->info.pic_width * parse->info.pic_height, 2);
800 gst_object_unref (parse);
806 GST_DEBUG_OBJECT (parse, "no header yet, cannot convert");
813 theora_parse_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
815 GstTheoraParse *parse;
816 gboolean res = FALSE;
818 parse = GST_THEORA_PARSE (parent);
820 switch (GST_QUERY_TYPE (query)) {
821 case GST_QUERY_POSITION:
824 GstFormat my_format, format;
827 frame = parse->prev_frame;
829 GST_LOG_OBJECT (parse,
830 "query %p: we have current frame: %" G_GINT64_FORMAT, query, frame);
833 gst_query_parse_position (query, &format, NULL);
835 /* and convert to the final format in two steps with time as the
836 * intermediate step */
837 my_format = GST_FORMAT_TIME;
839 theora_parse_src_convert (parse->sinkpad, GST_FORMAT_DEFAULT,
840 frame, &my_format, &time)))
843 /* fixme: handle segments
844 time = (time - parse->segment.start) + parse->segment.time;
847 GST_LOG_OBJECT (parse,
848 "query %p: our time: %" GST_TIME_FORMAT " (conv to %s)",
849 query, GST_TIME_ARGS (time), gst_format_get_name (format));
852 theora_parse_src_convert (pad, my_format, time, &format, &value)))
855 gst_query_set_position (query, format, value);
857 GST_LOG_OBJECT (parse,
858 "query %p: we return %" G_GINT64_FORMAT " (format %u)", query, value,
863 case GST_QUERY_DURATION:
864 /* forward to peer for total */
865 if (!(res = gst_pad_query (GST_PAD_PEER (parse->sinkpad), query)))
868 case GST_QUERY_CONVERT:
870 GstFormat src_fmt, dest_fmt;
871 gint64 src_val, dest_val;
873 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
875 theora_parse_src_convert (pad, src_fmt, src_val, &dest_fmt,
879 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
883 res = gst_pad_query_default (pad, parent, query);
893 GST_DEBUG_OBJECT (parse, "query failed");
898 static GstStateChangeReturn
899 theora_parse_change_state (GstElement * element, GstStateChange transition)
901 GstTheoraParse *parse = GST_THEORA_PARSE (element);
902 GstStateChangeReturn ret;
905 switch (transition) {
906 case GST_STATE_CHANGE_READY_TO_PAUSED:
907 th_info_init (&parse->info);
908 th_comment_init (&parse->comment);
909 parse->send_streamheader = TRUE;
910 parse->buffer_queue = g_queue_new ();
911 parse->event_queue = g_queue_new ();
912 parse->prev_keyframe = -1;
913 parse->prev_frame = -1;
914 parse->granule_offset = 0;
920 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
922 switch (transition) {
923 case GST_STATE_CHANGE_PAUSED_TO_READY:
924 th_info_clear (&parse->info);
925 th_comment_clear (&parse->comment);
926 theora_parse_clear_queue (parse);
927 g_queue_free (parse->buffer_queue);
928 g_queue_free (parse->event_queue);
929 parse->buffer_queue = NULL;
930 for (i = 0; i < 3; i++) {
931 if (parse->streamheader[i]) {
932 gst_buffer_unref (parse->streamheader[i]);
933 parse->streamheader[i] = NULL;
936 parse->streamheader_received = FALSE;