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., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
22 * SECTION:element-theoraparse
23 * @see_also: theoradec, oggdemux, vorbisparse
25 * The theoraparse element will parse the header packets of the Theora
26 * stream and put them as the streamheader in the caps. This is used in the
27 * multifdsink case where you want to stream live theora streams to multiple
28 * clients, each client has to receive the streamheaders first before they can
29 * consume the theora packets.
31 * This element also makes sure that the buffers that it pushes out are properly
32 * timestamped and that their offset and offset_end are set. The buffers that
33 * theoraparse outputs have all of the metadata that oggmux expects to receive,
34 * which allows you to (for example) remux an ogg/theora file.
36 * In addition, this element allows you to fix badly synchronized streams. You
37 * pass in an array of (granule time, buffer time) synchronization points via
38 * the synchronization-points GValueArray property, and this element will adjust
39 * the granulepos values that it outputs. The adjustment will be made by
40 * offsetting all buffers that it outputs by a specified amount, and updating
41 * that offset from the value array whenever a keyframe is processed.
44 * <title>Example pipelines</title>
46 * gst-launch -v filesrc location=video.ogg ! oggdemux ! theoraparse ! fakesink
47 * ]| This pipeline shows that the streamheader is set in the caps, and that each
48 * buffer has the timestamp, duration, offset, and offset_end set.
50 * gst-launch filesrc location=video.ogg ! oggdemux ! theoraparse \
51 * ! oggmux ! filesink location=video-remuxed.ogg
52 * ]| This pipeline shows remuxing. video-remuxed.ogg might not be exactly the same
53 * as video.ogg, but they should produce exactly the same decoded data.
56 * Last reviewed on 2008-05-28 (0.10.20)
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
132 g_object_class_install_property (gobject_class, PROP_SYNCHRONIZATION_POINTS,
133 g_param_spec_value_array ("synchronization-points",
134 "Synchronization points",
135 "An array of (granuletime, buffertime) pairs",
136 g_param_spec_uint64 ("time", "Time",
137 "Time (either granuletime or buffertime)", 0, G_MAXUINT64, 0,
138 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS),
139 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
142 gst_element_class_add_pad_template (gstelement_class,
143 gst_static_pad_template_get (&theora_parse_src_factory));
144 gst_element_class_add_pad_template (gstelement_class,
145 gst_static_pad_template_get (&theora_parse_sink_factory));
146 gst_element_class_set_details_simple (gstelement_class,
147 "Theora video parser", "Codec/Parser/Video",
148 "parse raw theora streams", "Andy Wingo <wingo@pobox.com>");
150 gstelement_class->change_state = theora_parse_change_state;
152 GST_DEBUG_CATEGORY_INIT (theoraparse_debug, "theoraparse", 0,
157 gst_theora_parse_init (GstTheoraParse * parse)
160 gst_pad_new_from_static_template (&theora_parse_sink_factory, "sink");
161 gst_pad_set_chain_function (parse->sinkpad, theora_parse_chain);
162 gst_pad_set_event_function (parse->sinkpad, theora_parse_sink_event);
163 gst_element_add_pad (GST_ELEMENT (parse), parse->sinkpad);
166 gst_pad_new_from_static_template (&theora_parse_src_factory, "src");
167 gst_pad_set_query_function (parse->srcpad, theora_parse_src_query);
168 gst_element_add_pad (GST_ELEMENT (parse), parse->srcpad);
172 theora_parse_dispose (GObject * object)
174 GstTheoraParse *parse = GST_THEORA_PARSE (object);
176 g_free (parse->times);
179 G_OBJECT_CLASS (parent_class)->dispose (object);
184 theora_parse_set_property (GObject * object, guint prop_id,
185 const GValue * value, GParamSpec * pspec)
187 GstTheoraParse *parse = GST_THEORA_PARSE (object);
190 case PROP_SYNCHRONIZATION_POINTS:
195 array = g_value_get_boxed (value);
198 if (array->n_values % 2)
201 g_free (parse->times);
202 parse->times = g_new (GstClockTime, array->n_values);
203 parse->npairs = array->n_values / 2;
204 for (i = 0; i < array->n_values; i++)
205 parse->times[i] = g_value_get_uint64 (&array->values[i]);
207 g_free (parse->times);
213 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
221 g_critical ("expected an even number of time values for "
222 "synchronization-points");
228 theora_parse_get_property (GObject * object, guint prop_id,
229 GValue * value, GParamSpec * pspec)
231 GstTheoraParse *parse = GST_THEORA_PARSE (object);
234 case PROP_SYNCHRONIZATION_POINTS:
236 GValueArray *array = NULL;
239 array = g_value_array_new (parse->npairs * 2);
241 for (i = 0; i < parse->npairs; i++) {
244 g_value_init (&v, G_TYPE_UINT64);
245 g_value_set_uint64 (&v, parse->times[i * 2]);
246 g_value_array_append (array, &v);
247 g_value_set_uint64 (&v, parse->times[i * 2 + 1]);
248 g_value_array_append (array, &v);
252 g_value_take_boxed (value, array);
256 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
263 theora_parse_set_header_on_caps (GstTheoraParse * parse, GstCaps * caps)
266 GstStructure *structure;
268 GValue array = { 0 };
269 GValue value = { 0 };
271 bufs = parse->streamheader;
272 structure = gst_caps_get_structure (caps, 0);
273 g_value_init (&array, GST_TYPE_ARRAY);
275 for (i = 0; i < 3; i++) {
279 bufs[i] = gst_buffer_make_writable (bufs[i]);
280 GST_BUFFER_FLAG_SET (bufs[i], GST_BUFFER_FLAG_HEADER);
282 g_value_init (&value, GST_TYPE_BUFFER);
283 gst_value_set_buffer (&value, bufs[i]);
284 gst_value_array_append_value (&array, &value);
285 g_value_unset (&value);
288 gst_structure_set_value (structure, "streamheader", &array);
289 g_value_unset (&array);
292 /* two tasks to do here: set the streamheader on the caps, and use libtheora to
295 theora_parse_set_streamheader (GstTheoraParse * parse)
299 guint32 bitstream_version;
300 th_setup_info *setup = NULL;
302 g_assert (!parse->streamheader_received);
304 caps = gst_caps_make_writable (gst_pad_query_caps (parse->srcpad, NULL));
305 theora_parse_set_header_on_caps (parse, caps);
306 GST_DEBUG_OBJECT (parse, "here are the caps: %" GST_PTR_FORMAT, caps);
307 gst_pad_set_caps (parse->srcpad, caps);
308 gst_caps_unref (caps);
310 for (i = 0; i < 3; i++) {
316 buf = parse->streamheader[i];
320 gst_buffer_map (buf, &map, GST_MAP_READ);
321 packet.packet = map.data;
322 packet.bytes = map.size;
323 packet.granulepos = GST_BUFFER_OFFSET_END (buf);
324 packet.packetno = i + 1;
326 packet.b_o_s = (i == 0);
327 ret = th_decode_headerin (&parse->info, &parse->comment, &setup, &packet);
328 gst_buffer_unmap (buf, &map);
330 GST_WARNING_OBJECT (parse, "Failed to decode Theora header %d: %d\n",
335 th_setup_free (setup);
338 parse->fps_n = parse->info.fps_numerator;
339 parse->fps_d = parse->info.fps_denominator;
340 parse->shift = parse->info.keyframe_granule_shift;
342 /* With libtheora-1.0beta1 the granulepos scheme was changed:
343 * where earlier the granulepos referred to the index/beginning
344 * of a frame, it now refers to the end, which matches the use
345 * in vorbis/speex. We check the bitstream version from the header so
346 * we know which way to interpret the incoming granuepos
348 bitstream_version = (parse->info.version_major << 16) |
349 (parse->info.version_minor << 8) | parse->info.version_subminor;
350 parse->is_old_bitstream = (bitstream_version <= 0x00030200);
352 parse->streamheader_received = TRUE;
356 theora_parse_drain_event_queue (GstTheoraParse * parse)
358 while (parse->event_queue->length) {
361 event = GST_EVENT_CAST (g_queue_pop_head (parse->event_queue));
362 gst_pad_event_default (parse->sinkpad, GST_OBJECT_CAST (parse), event);
367 theora_parse_push_headers (GstTheoraParse * parse)
371 theora_parse_drain_event_queue (parse);
373 if (!parse->streamheader_received)
374 theora_parse_set_streamheader (parse);
376 /* ignore return values, we pass along the result of pushing data packets only
378 for (i = 0; i < 3; i++) {
381 if ((buf = parse->streamheader[i])) {
382 gst_pad_push (parse->srcpad, buf);
383 parse->streamheader[i] = NULL;
389 theora_parse_clear_queue (GstTheoraParse * parse)
391 while (parse->buffer_queue->length) {
394 buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
395 gst_buffer_unref (buf);
397 while (parse->event_queue->length) {
400 event = GST_EVENT_CAST (g_queue_pop_head (parse->event_queue));
401 gst_event_unref (event);
406 make_granulepos (GstTheoraParse * parse, gint64 keyframe, gint64 frame)
412 /* If using newer theora, offset the granulepos by +1, see comment in
413 * theora_parse_set_streamheader.
415 * We don't increment keyframe directly, as internally we always index frames
416 * starting from 0 and we do some sanity checking below. */
417 if (!parse->is_old_bitstream)
418 iframe = keyframe + 1;
422 g_return_val_if_fail (frame >= keyframe, -1);
423 g_return_val_if_fail (frame - keyframe < 1 << parse->shift, -1);
425 return (iframe << parse->shift) + (frame - keyframe);
429 parse_granulepos (GstTheoraParse * parse, gint64 granulepos,
430 gint64 * keyframe, gint64 * frame)
434 kf = granulepos >> parse->shift;
435 /* If using newer theora, offset the granulepos by -1, see comment
436 * in theora_parse_set_streamheader */
437 if (!parse->is_old_bitstream)
442 *frame = kf + (granulepos & ((1 << parse->shift) - 1));
446 is_keyframe (GstBuffer * buf)
451 size = gst_buffer_get_size (buf);
455 gst_buffer_extract (buf, 0, data, 1);
457 return ((data[0] & 0x40) == 0);
461 theora_parse_munge_granulepos (GstTheoraParse * parse, GstBuffer * buf,
462 gint64 keyframe, gint64 frame)
465 GstClockTimeDiff time_diff;
467 if (keyframe == frame) {
470 /* update granule_offset */
471 for (i = 0; i < parse->npairs; i++) {
472 if (parse->times[i * 2] >= GST_BUFFER_OFFSET (buf))
476 /* time_diff gets reset below */
477 time_diff = parse->times[i * 2 - 1] - parse->times[i * 2 - 2];
478 parse->granule_offset = gst_util_uint64_scale (time_diff,
479 parse->fps_n, parse->fps_d * GST_SECOND);
480 parse->granule_offset <<= parse->shift;
484 frames_diff = parse->granule_offset >> parse->shift;
485 time_diff = gst_util_uint64_scale_int (GST_SECOND * frames_diff,
486 parse->fps_d, parse->fps_n);
488 GST_DEBUG_OBJECT (parse, "offsetting theora stream by %" G_GINT64_FORMAT
489 " frames (%" GST_TIME_FORMAT ")", frames_diff, GST_TIME_ARGS (time_diff));
491 GST_BUFFER_OFFSET_END (buf) += parse->granule_offset;
492 GST_BUFFER_OFFSET (buf) += time_diff;
493 GST_BUFFER_TIMESTAMP (buf) += time_diff;
497 theora_parse_push_buffer (GstTheoraParse * parse, GstBuffer * buf,
498 gint64 keyframe, gint64 frame)
501 GstClockTime this_time, next_time;
503 this_time = gst_util_uint64_scale_int (GST_SECOND * frame,
504 parse->fps_d, parse->fps_n);
506 next_time = gst_util_uint64_scale_int (GST_SECOND * (frame + 1),
507 parse->fps_d, parse->fps_n);
509 GST_BUFFER_OFFSET_END (buf) = make_granulepos (parse, keyframe, frame);
510 GST_BUFFER_OFFSET (buf) = this_time;
511 GST_BUFFER_TIMESTAMP (buf) = this_time;
512 GST_BUFFER_DURATION (buf) = next_time - this_time;
515 theora_parse_munge_granulepos (parse, buf, keyframe, frame);
517 GST_DEBUG_OBJECT (parse, "pushing buffer with granulepos %" G_GINT64_FORMAT
518 "|%" G_GINT64_FORMAT, keyframe, frame - keyframe);
520 return gst_pad_push (parse->srcpad, buf);
524 theora_parse_drain_queue_prematurely (GstTheoraParse * parse)
526 GstFlowReturn ret = GST_FLOW_OK;
528 /* got an EOS event, make sure to push out any buffers that were in the queue
529 * -- won't normally be the case, but this catches the
530 * didn't-get-a-granulepos-on-the-last-packet case. Assuming a continuous
533 GST_DEBUG_OBJECT (parse, "got EOS, draining queue");
535 /* if we get an eos before pushing the streamheaders, drain our events before
537 theora_parse_drain_event_queue (parse);
539 while (!g_queue_is_empty (parse->buffer_queue)) {
542 buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
546 if (is_keyframe (buf))
547 /* we have a keyframe */
548 parse->prev_keyframe = parse->prev_frame;
550 GST_BUFFER_FLAGS (buf) |= GST_BUFFER_FLAG_DELTA_UNIT;
552 if (parse->prev_keyframe < 0) {
553 if (GST_BUFFER_OFFSET_END_IS_VALID (buf)) {
554 parse_granulepos (parse, GST_BUFFER_OFFSET_END (buf),
555 &parse->prev_keyframe, NULL);
557 /* No previous keyframe known; can't extract one from this frame. That
558 * means we can't do any valid output for this frame, just continue to
561 gst_buffer_unref (buf);
566 ret = theora_parse_push_buffer (parse, buf, parse->prev_keyframe,
569 if (ret != GST_FLOW_OK)
578 theora_parse_drain_queue (GstTheoraParse * parse, gint64 granulepos)
580 GstFlowReturn ret = GST_FLOW_OK;
581 gint64 keyframe, prev_frame, frame;
583 parse_granulepos (parse, granulepos, &keyframe, &frame);
585 GST_DEBUG ("draining queue of length %d",
586 g_queue_get_length (parse->buffer_queue));
588 GST_LOG_OBJECT (parse, "gp %" G_GINT64_FORMAT ", kf %" G_GINT64_FORMAT
589 ", frame %" G_GINT64_FORMAT, granulepos, keyframe, frame);
591 prev_frame = frame - g_queue_get_length (parse->buffer_queue);
593 GST_LOG_OBJECT (parse,
594 "new prev %" G_GINT64_FORMAT ", prev %" G_GINT64_FORMAT, prev_frame,
597 if (prev_frame < parse->prev_frame) {
598 GST_WARNING ("jumped %" G_GINT64_FORMAT
599 " frames backwards! not sure what to do here",
600 parse->prev_frame - prev_frame);
601 parse->prev_frame = prev_frame;
602 } else if (prev_frame > parse->prev_frame) {
603 GST_INFO ("discontinuity detected (%" G_GINT64_FORMAT
604 " frames)", prev_frame - parse->prev_frame);
605 if (keyframe <= prev_frame && keyframe > parse->prev_keyframe)
606 parse->prev_keyframe = keyframe;
607 parse->prev_frame = prev_frame;
610 while (!g_queue_is_empty (parse->buffer_queue)) {
614 g_assert (parse->prev_frame >= 0);
616 buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
618 if (is_keyframe (buf))
619 /* we have a keyframe */
620 parse->prev_keyframe = parse->prev_frame;
622 GST_BUFFER_FLAGS (buf) |= GST_BUFFER_FLAG_DELTA_UNIT;
624 ret = theora_parse_push_buffer (parse, buf, parse->prev_keyframe,
627 if (ret != GST_FLOW_OK)
636 theora_parse_queue_buffer (GstTheoraParse * parse, GstBuffer * buf)
638 GstFlowReturn ret = GST_FLOW_OK;
640 buf = gst_buffer_make_writable (buf);
642 g_queue_push_tail (parse->buffer_queue, buf);
644 if (GST_BUFFER_OFFSET_END_IS_VALID (buf)) {
645 if (parse->prev_keyframe < 0) {
646 parse_granulepos (parse, GST_BUFFER_OFFSET_END (buf),
647 &parse->prev_keyframe, NULL);
649 ret = theora_parse_drain_queue (parse, GST_BUFFER_OFFSET_END (buf));
656 theora_parse_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
659 GstTheoraParse *parse;
662 gboolean have_header;
664 parse = GST_THEORA_PARSE (parent);
668 gst_buffer_map (buffer, &map, GST_MAP_READ);
669 header = map.data[0];
670 gst_buffer_unmap (buffer, &map);
678 if (parse->send_streamheader) {
679 /* we need to collect the headers still */
680 /* so put it on the streamheader list and return */
681 if (header >= 0x80 && header <= 0x82)
682 parse->streamheader[header - 0x80] = buffer;
686 /* data packet, push the headers we collected before */
687 if (parse->send_streamheader) {
688 theora_parse_push_headers (parse);
689 parse->send_streamheader = FALSE;
692 ret = theora_parse_queue_buffer (parse, buffer);
699 theora_parse_queue_event (GstTheoraParse * parse, GstEvent * event)
701 g_queue_push_tail (parse->event_queue, event);
706 theora_parse_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
709 GstTheoraParse *parse;
711 parse = GST_THEORA_PARSE (parent);
713 switch (GST_EVENT_TYPE (event)) {
714 case GST_EVENT_FLUSH_STOP:
715 theora_parse_clear_queue (parse);
716 parse->prev_keyframe = -1;
717 parse->prev_frame = -1;
718 ret = gst_pad_event_default (pad, parent, event);
721 theora_parse_drain_queue_prematurely (parse);
722 ret = gst_pad_event_default (pad, parent, event);
725 if (parse->send_streamheader && GST_EVENT_IS_SERIALIZED (event))
726 ret = theora_parse_queue_event (parse, event);
728 ret = gst_pad_event_default (pad, parent, event);
736 theora_parse_src_convert (GstPad * pad,
737 GstFormat src_format, gint64 src_value,
738 GstFormat * dest_format, gint64 * dest_value)
741 GstTheoraParse *parse;
744 if (src_format == *dest_format) {
745 *dest_value = src_value;
749 parse = GST_THEORA_PARSE (gst_pad_get_parent (pad));
751 /* we need the info part before we can done something */
752 if (!parse->streamheader_received)
755 switch (src_format) {
756 case GST_FORMAT_BYTES:
757 switch (*dest_format) {
758 case GST_FORMAT_DEFAULT:
759 *dest_value = gst_util_uint64_scale_int (src_value, 2,
760 parse->info.pic_height * parse->info.pic_width * 3);
762 case GST_FORMAT_TIME:
763 /* seems like a rather silly conversion, implement me if you like */
768 case GST_FORMAT_TIME:
769 switch (*dest_format) {
770 case GST_FORMAT_BYTES:
771 scale = 3 * (parse->info.pic_width * parse->info.pic_height) / 2;
772 case GST_FORMAT_DEFAULT:
773 *dest_value = scale * gst_util_uint64_scale (src_value,
774 parse->info.fps_numerator,
775 parse->info.fps_denominator * GST_SECOND);
778 GST_DEBUG_OBJECT (parse, "cannot convert to format %s",
779 gst_format_get_name (*dest_format));
783 case GST_FORMAT_DEFAULT:
784 switch (*dest_format) {
785 case GST_FORMAT_TIME:
786 *dest_value = gst_util_uint64_scale (src_value,
787 GST_SECOND * parse->info.fps_denominator,
788 parse->info.fps_numerator);
790 case GST_FORMAT_BYTES:
791 *dest_value = gst_util_uint64_scale_int (src_value,
792 3 * parse->info.pic_width * parse->info.pic_height, 2);
802 gst_object_unref (parse);
808 GST_DEBUG_OBJECT (parse, "no header yet, cannot convert");
815 theora_parse_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
817 GstTheoraParse *parse;
818 gboolean res = FALSE;
820 parse = GST_THEORA_PARSE (parent);
822 switch (GST_QUERY_TYPE (query)) {
823 case GST_QUERY_POSITION:
826 GstFormat my_format, format;
829 frame = parse->prev_frame;
831 GST_LOG_OBJECT (parse,
832 "query %p: we have current frame: %" G_GINT64_FORMAT, query, frame);
835 gst_query_parse_position (query, &format, NULL);
837 /* and convert to the final format in two steps with time as the
838 * intermediate step */
839 my_format = GST_FORMAT_TIME;
841 theora_parse_src_convert (parse->sinkpad, GST_FORMAT_DEFAULT,
842 frame, &my_format, &time)))
845 /* fixme: handle segments
846 time = (time - parse->segment.start) + parse->segment.time;
849 GST_LOG_OBJECT (parse,
850 "query %p: our time: %" GST_TIME_FORMAT " (conv to %s)",
851 query, GST_TIME_ARGS (time), gst_format_get_name (format));
854 theora_parse_src_convert (pad, my_format, time, &format, &value)))
857 gst_query_set_position (query, format, value);
859 GST_LOG_OBJECT (parse,
860 "query %p: we return %" G_GINT64_FORMAT " (format %u)", query, value,
865 case GST_QUERY_DURATION:
866 /* forward to peer for total */
867 if (!(res = gst_pad_query (GST_PAD_PEER (parse->sinkpad), query)))
870 case GST_QUERY_CONVERT:
872 GstFormat src_fmt, dest_fmt;
873 gint64 src_val, dest_val;
875 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
877 theora_parse_src_convert (pad, src_fmt, src_val, &dest_fmt,
881 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
885 res = gst_pad_query_default (pad, parent, query);
895 GST_DEBUG_OBJECT (parse, "query failed");
900 static GstStateChangeReturn
901 theora_parse_change_state (GstElement * element, GstStateChange transition)
903 GstTheoraParse *parse = GST_THEORA_PARSE (element);
904 GstStateChangeReturn ret;
907 switch (transition) {
908 case GST_STATE_CHANGE_READY_TO_PAUSED:
909 th_info_init (&parse->info);
910 th_comment_init (&parse->comment);
911 parse->send_streamheader = TRUE;
912 parse->buffer_queue = g_queue_new ();
913 parse->event_queue = g_queue_new ();
914 parse->prev_keyframe = -1;
915 parse->prev_frame = -1;
916 parse->granule_offset = 0;
922 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
924 switch (transition) {
925 case GST_STATE_CHANGE_PAUSED_TO_READY:
926 th_info_clear (&parse->info);
927 th_comment_clear (&parse->comment);
928 theora_parse_clear_queue (parse);
929 g_queue_free (parse->buffer_queue);
930 g_queue_free (parse->event_queue);
931 parse->buffer_queue = NULL;
932 for (i = 0; i < 3; i++) {
933 if (parse->streamheader[i]) {
934 gst_buffer_unref (parse->streamheader[i]);
935 parse->streamheader[i] = NULL;
938 parse->streamheader_received = FALSE;