2 * Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
3 * Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>)
4 * Copyright (C) <2009-2010> STEricsson <benjamin.gaignard@stericsson.com>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
21 /* Element-Checklist-Version: 5 */
24 * SECTION:element-avidemux
26 * Demuxes an .avi file into raw or compressed audio and/or video streams.
28 * This element supports both push and pull-based scheduling, depending on the
29 * capabilities of the upstream elements.
32 * <title>Example launch line</title>
34 * gst-launch filesrc location=test.avi ! avidemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink
35 * ]| Play (parse and decode) an .avi file and try to output it to
36 * an automatically detected soundcard and videosink. If the AVI file contains
37 * compressed audio or video data, this will only work if you have the
38 * right decoder elements/plugins installed.
41 * Last reviewed on 2006-12-29 (0.10.6)
51 #include "gst/riff/riff-media.h"
52 #include "gstavidemux.h"
54 #include <gst/gst-i18n-plugin.h>
55 #include <gst/base/gstadapter.h>
58 #define DIV_ROUND_UP(s,v) (((s) + ((v)-1)) / (v))
60 #define GST_AVI_KEYFRAME 1
61 #define ENTRY_IS_KEYFRAME(e) ((e)->flags == GST_AVI_KEYFRAME)
62 #define ENTRY_SET_KEYFRAME(e) ((e)->flags = GST_AVI_KEYFRAME)
63 #define ENTRY_UNSET_KEYFRAME(e) ((e)->flags = 0)
66 GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
67 #define GST_CAT_DEFAULT avidemux_debug
69 static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
72 GST_STATIC_CAPS ("video/x-msvideo")
75 #ifndef GST_DISABLE_GST_DEBUG
76 static const char *const snap_types[2][2] = {
82 static void gst_avi_demux_finalize (GObject * object);
84 static void gst_avi_demux_reset (GstAviDemux * avi);
87 static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
89 static gboolean gst_avi_demux_handle_src_event (GstPad * pad,
90 GstObject * parent, GstEvent * event);
91 static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
92 GstObject * parent, GstEvent * event);
93 static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
96 static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
98 static gboolean gst_avi_demux_handle_src_query (GstPad * pad,
99 GstObject * parent, GstQuery * query);
100 static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
101 gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
103 static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
104 static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
106 static gboolean gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
108 static void gst_avi_demux_loop (GstPad * pad);
109 static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad,
111 static gboolean gst_avi_demux_sink_activate_mode (GstPad * sinkpad,
112 GstObject * parent, GstPadMode mode, gboolean active);
113 static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstObject * parent,
116 static void gst_avi_demux_set_index (GstElement * element, GstIndex * index);
117 static GstIndex *gst_avi_demux_get_index (GstElement * element);
119 static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
120 GstStateChange transition);
121 static void gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi);
122 static void gst_avi_demux_get_buffer_info (GstAviDemux * avi,
123 GstAviStream * stream, guint entry_n, GstClockTime * timestamp,
124 GstClockTime * ts_end, guint64 * offset, guint64 * offset_end);
126 static void gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf);
128 /* GObject methods */
130 #define gst_avi_demux_parent_class parent_class
131 G_DEFINE_TYPE (GstAviDemux, gst_avi_demux, GST_TYPE_ELEMENT);
134 gst_avi_demux_class_init (GstAviDemuxClass * klass)
136 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
137 GObjectClass *gobject_class = (GObjectClass *) klass;
138 GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl;
139 GstCaps *audcaps, *vidcaps, *subcaps;
141 GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
142 0, "Demuxer for AVI streams");
144 gobject_class->finalize = gst_avi_demux_finalize;
146 gstelement_class->change_state =
147 GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
149 gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_avi_demux_set_index);
150 gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_avi_demux_get_index);
153 audcaps = gst_riff_create_audio_template_caps ();
154 gst_caps_append (audcaps, gst_caps_new_empty_simple ("audio/x-avi-unknown"));
155 audiosrctempl = gst_pad_template_new ("audio_%u",
156 GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
158 vidcaps = gst_riff_create_video_template_caps ();
159 gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
160 gst_caps_append (vidcaps, gst_caps_new_empty_simple ("video/x-avi-unknown"));
161 videosrctempl = gst_pad_template_new ("video_%u",
162 GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
164 subcaps = gst_caps_new_empty_simple ("application/x-subtitle-avi");
165 subsrctempl = gst_pad_template_new ("subtitle_%u",
166 GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
167 gst_element_class_add_pad_template (gstelement_class, audiosrctempl);
168 gst_element_class_add_pad_template (gstelement_class, videosrctempl);
169 gst_element_class_add_pad_template (gstelement_class, subsrctempl);
170 gst_element_class_add_pad_template (gstelement_class,
171 gst_static_pad_template_get (&sink_templ));
173 gst_element_class_set_static_metadata (gstelement_class, "Avi demuxer",
175 "Demultiplex an avi file into audio and video",
176 "Erik Walthinsen <omega@cse.ogi.edu>, "
177 "Wim Taymans <wim.taymans@chello.be>, "
178 "Thijs Vermeir <thijsvermeir@gmail.com>");
182 gst_avi_demux_init (GstAviDemux * avi)
184 avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
185 gst_pad_set_activate_function (avi->sinkpad,
186 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
187 gst_pad_set_activatemode_function (avi->sinkpad,
188 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_mode));
189 gst_pad_set_chain_function (avi->sinkpad,
190 GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
191 gst_pad_set_event_function (avi->sinkpad,
192 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
193 gst_element_add_pad (GST_ELEMENT_CAST (avi), avi->sinkpad);
195 avi->adapter = gst_adapter_new ();
197 gst_avi_demux_reset (avi);
199 GST_OBJECT_FLAG_SET (avi, GST_ELEMENT_FLAG_INDEXABLE);
203 gst_avi_demux_finalize (GObject * object)
205 GstAviDemux *avi = GST_AVI_DEMUX (object);
207 GST_DEBUG ("AVI: finalize");
209 g_object_unref (avi->adapter);
211 G_OBJECT_CLASS (parent_class)->finalize (object);
215 gst_avi_demux_reset_stream (GstAviDemux * avi, GstAviStream * stream)
217 g_free (stream->strh);
218 g_free (stream->strf.data);
219 g_free (stream->name);
220 g_free (stream->index);
221 g_free (stream->indexes);
222 if (stream->initdata)
223 gst_buffer_unref (stream->initdata);
224 if (stream->extradata)
225 gst_buffer_unref (stream->extradata);
227 if (stream->exposed) {
228 gst_pad_set_active (stream->pad, FALSE);
229 gst_element_remove_pad (GST_ELEMENT_CAST (avi), stream->pad);
231 gst_object_unref (stream->pad);
233 if (stream->taglist) {
234 gst_tag_list_free (stream->taglist);
235 stream->taglist = NULL;
237 memset (stream, 0, sizeof (GstAviStream));
241 gst_avi_demux_reset (GstAviDemux * avi)
245 GST_DEBUG ("AVI: reset");
247 for (i = 0; i < avi->num_streams; i++)
248 gst_avi_demux_reset_stream (avi, &avi->stream[i]);
250 avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
251 avi->num_streams = 0;
252 avi->num_v_streams = 0;
253 avi->num_a_streams = 0;
254 avi->num_t_streams = 0;
255 avi->main_stream = -1;
257 avi->state = GST_AVI_DEMUX_START;
259 avi->building_index = FALSE;
261 avi->index_offset = 0;
266 if (avi->element_index)
267 gst_object_unref (avi->element_index);
268 avi->element_index = NULL;
271 if (avi->seg_event) {
272 gst_event_unref (avi->seg_event);
273 avi->seg_event = NULL;
275 if (avi->seek_event) {
276 gst_event_unref (avi->seek_event);
277 avi->seek_event = NULL;
281 gst_tag_list_free (avi->globaltags);
282 avi->globaltags = NULL;
284 avi->got_tags = TRUE; /* we always want to push global tags */
285 avi->have_eos = FALSE;
286 avi->seekable = TRUE;
288 gst_adapter_clear (avi->adapter);
290 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
294 /* GstElement methods */
297 static const GstFormat *
298 gst_avi_demux_get_src_formats (GstPad * pad)
300 GstAviStream *stream = gst_pad_get_element_private (pad);
302 static const GstFormat src_a_formats[] = {
308 static const GstFormat src_v_formats[] = {
314 return (stream->strh->type == GST_RIFF_FCC_auds ?
315 src_a_formats : src_v_formats);
319 /* assumes stream->strf.auds->av_bps != 0 */
320 static inline GstClockTime
321 avi_stream_convert_bytes_to_time_unchecked (GstAviStream * stream,
324 return gst_util_uint64_scale_int (bytes, GST_SECOND,
325 stream->strf.auds->av_bps);
328 static inline guint64
329 avi_stream_convert_time_to_bytes_unchecked (GstAviStream * stream,
332 return gst_util_uint64_scale_int (time, stream->strf.auds->av_bps,
336 /* assumes stream->strh->rate != 0 */
337 static inline GstClockTime
338 avi_stream_convert_frames_to_time_unchecked (GstAviStream * stream,
341 return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
345 static inline guint64
346 avi_stream_convert_time_to_frames_unchecked (GstAviStream * stream,
349 return gst_util_uint64_scale (time, stream->strh->rate,
350 stream->strh->scale * GST_SECOND);
354 gst_avi_demux_src_convert (GstPad * pad,
355 GstFormat src_format,
356 gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
358 GstAviStream *stream = gst_pad_get_element_private (pad);
362 "Received src_format:%s, src_value:%" G_GUINT64_FORMAT
363 ", dest_format:%s", gst_format_get_name (src_format), src_value,
364 gst_format_get_name (*dest_format));
366 if (G_UNLIKELY (src_format == *dest_format)) {
367 *dest_value = src_value;
370 if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
374 if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
375 (src_format == GST_FORMAT_BYTES
376 || *dest_format == GST_FORMAT_BYTES))) {
381 switch (src_format) {
382 case GST_FORMAT_TIME:
383 switch (*dest_format) {
384 case GST_FORMAT_BYTES:
385 *dest_value = gst_util_uint64_scale_int (src_value,
386 stream->strf.auds->av_bps, GST_SECOND);
388 case GST_FORMAT_DEFAULT:
390 gst_util_uint64_scale_round (src_value, stream->strh->rate,
391 stream->strh->scale * GST_SECOND);
398 case GST_FORMAT_BYTES:
399 switch (*dest_format) {
400 case GST_FORMAT_TIME:
401 if (stream->strf.auds->av_bps != 0) {
402 *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
412 case GST_FORMAT_DEFAULT:
413 switch (*dest_format) {
414 case GST_FORMAT_TIME:
416 avi_stream_convert_frames_to_time_unchecked (stream, src_value);
429 "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
430 gst_format_get_name (*dest_format), *dest_value);
435 gst_avi_demux_handle_src_query (GstPad * pad, GstObject * parent,
439 GstAviDemux *avi = GST_AVI_DEMUX (parent);
441 GstAviStream *stream = gst_pad_get_element_private (pad);
443 if (!stream->strh || !stream->strf.data)
444 return gst_pad_query_default (pad, parent, query);
446 switch (GST_QUERY_TYPE (query)) {
447 case GST_QUERY_POSITION:{
450 GST_DEBUG ("pos query for stream %u: frames %u, bytes %u",
451 stream->num, stream->current_entry, stream->current_total);
453 /* FIXME, this looks clumsy */
454 if (stream->strh->type == GST_RIFF_FCC_auds) {
455 if (stream->is_vbr) {
457 pos = gst_util_uint64_scale ((gint64) stream->current_entry *
458 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
459 GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
460 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
461 } else if (stream->strf.auds->av_bps != 0) {
463 pos = gst_util_uint64_scale (stream->current_total, GST_SECOND,
464 (guint64) stream->strf.auds->av_bps);
465 GST_DEBUG_OBJECT (avi,
466 "CBR convert bytes %u, time %" GST_TIME_FORMAT,
467 stream->current_total, GST_TIME_ARGS (pos));
468 } else if (stream->idx_n != 0 && stream->total_bytes != 0) {
469 /* calculate timestamps based on percentage of length */
470 guint64 xlen = avi->avih->us_frame *
471 avi->avih->tot_frames * GST_USECOND;
473 if (stream->is_vbr) {
474 pos = gst_util_uint64_scale (xlen, stream->current_entry,
476 GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
477 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
479 pos = gst_util_uint64_scale (xlen, stream->current_total,
480 stream->total_bytes);
481 GST_DEBUG_OBJECT (avi,
482 "CBR perc convert bytes %u, time %" GST_TIME_FORMAT,
483 stream->current_total, GST_TIME_ARGS (pos));
490 if (stream->strh->rate != 0) {
491 pos = gst_util_uint64_scale ((guint64) stream->current_entry *
492 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
494 pos = stream->current_entry * avi->avih->us_frame * GST_USECOND;
498 GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
499 gst_query_set_position (query, GST_FORMAT_TIME, pos);
501 GST_WARNING ("pos query failed");
504 case GST_QUERY_DURATION:
507 GstClockTime duration;
509 /* only act on audio or video streams */
510 if (stream->strh->type != GST_RIFF_FCC_auds &&
511 stream->strh->type != GST_RIFF_FCC_vids) {
516 /* take stream duration, fall back to avih duration */
517 if ((duration = stream->duration) == -1)
518 duration = avi->duration;
520 gst_query_parse_duration (query, &fmt, NULL);
523 case GST_FORMAT_TIME:
524 gst_query_set_duration (query, fmt, duration);
526 case GST_FORMAT_DEFAULT:
529 GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
532 if (stream->idx_n > 0)
533 gst_query_set_duration (query, fmt, stream->idx_n);
534 else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
535 duration, fmt, &dur))
536 gst_query_set_duration (query, fmt, dur);
545 case GST_QUERY_SEEKING:{
548 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
549 if (fmt == GST_FORMAT_TIME) {
550 gboolean seekable = TRUE;
552 if (avi->streaming) {
553 seekable = avi->seekable;
556 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
557 0, stream->duration);
562 case GST_QUERY_CONVERT:{
563 GstFormat src_fmt, dest_fmt;
564 gint64 src_val, dest_val;
566 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
567 if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
569 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
571 res = gst_pad_query_default (pad, parent, query);
575 res = gst_pad_query_default (pad, parent, query);
583 static const GstEventMask *
584 gst_avi_demux_get_event_mask (GstPad * pad)
586 static const GstEventMask masks[] = {
587 {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
597 gst_avi_demux_seek_streams (GstAviDemux * avi, guint64 offset, gboolean before)
599 GstAviStream *stream;
600 GstIndexEntry *entry;
602 gint64 val, min = offset;
604 for (i = 0; i < avi->num_streams; i++) {
605 stream = &avi->stream[i];
607 entry = gst_index_get_assoc_entry (avi->element_index, stream->index_id,
608 before ? GST_INDEX_LOOKUP_BEFORE : GST_INDEX_LOOKUP_AFTER,
609 GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_BYTES, offset);
613 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
614 GST_DEBUG_OBJECT (avi, "stream %d, previous entry at %"
615 G_GUINT64_FORMAT, i, val);
623 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
624 stream->current_entry = 0;
625 stream->current_total = 0;
629 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
630 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT,
633 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &val);
634 stream->current_total = val;
635 gst_index_entry_assoc_map (entry, GST_FORMAT_DEFAULT, &val);
636 stream->current_entry = val;
644 gst_avi_demux_index_entry_offset_search (GstAviIndexEntry * entry,
647 if (entry->offset < *offset)
649 else if (entry->offset > *offset)
655 gst_avi_demux_seek_streams_index (GstAviDemux * avi, guint64 offset,
658 GstAviStream *stream;
659 GstAviIndexEntry *entry;
661 gint64 val, min = offset;
664 for (i = 0; i < avi->num_streams; i++) {
665 stream = &avi->stream[i];
667 /* compensate for chunk header */
670 gst_util_array_binary_search (stream->index, stream->idx_n,
671 sizeof (GstAviIndexEntry),
672 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
673 before ? GST_SEARCH_MODE_BEFORE : GST_SEARCH_MODE_AFTER, &offset, NULL);
677 index = entry - stream->index;
681 val = stream->index[index].offset;
682 GST_DEBUG_OBJECT (avi,
683 "stream %d, previous entry at %" G_GUINT64_FORMAT, i, val);
691 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
692 stream->current_entry = 0;
693 stream->current_total = 0;
697 val = stream->index[index].offset - 8;
698 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT, i,
701 stream->current_total = stream->index[index].total;
702 stream->current_entry = index;
708 #define GST_AVI_SEEK_PUSH_DISPLACE (4 * GST_SECOND)
711 gst_avi_demux_handle_sink_event (GstPad * pad, GstObject * parent,
715 GstAviDemux *avi = GST_AVI_DEMUX (parent);
717 GST_DEBUG_OBJECT (avi,
718 "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
720 switch (GST_EVENT_TYPE (event)) {
721 case GST_EVENT_SEGMENT:
723 gint64 boffset, offset = 0;
726 /* some debug output */
727 gst_event_copy_segment (event, &segment);
728 GST_DEBUG_OBJECT (avi, "received newsegment %" GST_SEGMENT_FORMAT,
731 /* chain will send initial newsegment after pads have been added */
732 if (avi->state != GST_AVI_DEMUX_MOVI) {
733 GST_DEBUG_OBJECT (avi, "still starting, eating event");
737 /* we only expect a BYTE segment, e.g. following a seek */
738 if (segment.format != GST_FORMAT_BYTES) {
739 GST_DEBUG_OBJECT (avi, "unsupported segment format, ignoring");
743 if (avi->have_index) {
744 GstAviIndexEntry *entry;
745 guint i = 0, index = 0, k = 0;
746 GstAviStream *stream;
748 /* compensate chunk header, stored index offset points after header */
749 boffset = segment.start + 8;
750 /* find which stream we're on */
752 stream = &avi->stream[i];
754 /* find the index for start bytes offset */
755 entry = gst_util_array_binary_search (stream->index,
756 stream->idx_n, sizeof (GstAviIndexEntry),
757 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
758 GST_SEARCH_MODE_AFTER, &boffset, NULL);
762 index = entry - stream->index;
764 /* we are on the stream with a chunk start offset closest to start */
765 if (!offset || stream->index[index].offset < offset) {
766 offset = stream->index[index].offset;
769 /* exact match needs no further searching */
770 if (stream->index[index].offset == segment.start)
772 } while (++i < avi->num_streams);
775 stream = &avi->stream[k];
777 /* so we have no idea what is to come, or where we are */
779 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
783 /* get the ts corresponding to start offset bytes for the stream */
784 gst_avi_demux_get_buffer_info (avi, stream, index,
785 (GstClockTime *) & segment.time, NULL, NULL, NULL);
787 } else if (avi->element_index) {
788 GstIndexEntry *entry;
790 /* Let's check if we have an index entry for this position */
791 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
792 GST_INDEX_LOOKUP_AFTER, GST_ASSOCIATION_FLAG_NONE,
793 GST_FORMAT_BYTES, segment.start);
795 /* we can not go where we have not yet been before ... */
797 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
801 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME,
802 (gint64 *) & segment.time);
803 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &offset);
806 GST_WARNING_OBJECT (avi, "no index data, forcing EOS");
810 segment.format = GST_FORMAT_TIME;
811 segment.start = segment.time;
812 segment.stop = GST_CLOCK_TIME_NONE;
813 segment.position = segment.start;
815 /* rescue duration */
816 segment.duration = avi->segment.duration;
818 /* set up segment and send downstream */
819 gst_segment_copy_into (&segment, &avi->segment);
821 GST_DEBUG_OBJECT (avi, "Pushing newseg %" GST_SEGMENT_FORMAT, &segment);
822 gst_avi_demux_push_event (avi, gst_event_new_segment (&segment));
824 GST_DEBUG_OBJECT (avi, "next chunk expected at %" G_GINT64_FORMAT,
827 /* adjust state for streaming thread accordingly */
829 gst_avi_demux_seek_streams_index (avi, offset, FALSE);
832 gst_avi_demux_seek_streams (avi, offset, FALSE);
835 /* set up streaming thread */
836 g_assert (offset >= boffset);
837 avi->offset = boffset;
838 avi->todrop = offset - boffset;
841 gst_event_unref (event);
846 avi->have_eos = TRUE;
851 if (avi->state != GST_AVI_DEMUX_MOVI) {
852 gst_event_unref (event);
853 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
854 (NULL), ("got eos and didn't receive a complete header object"));
855 } else if (!gst_avi_demux_push_event (avi, event)) {
856 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
857 (NULL), ("got eos but no streams (yet)"));
861 case GST_EVENT_FLUSH_STOP:
865 gst_adapter_clear (avi->adapter);
866 avi->have_eos = FALSE;
867 for (i = 0; i < avi->num_streams; i++) {
868 avi->stream[i].last_flow = GST_FLOW_OK;
869 avi->stream[i].discont = TRUE;
871 /* fall through to default case so that the event gets passed downstream */
874 res = gst_pad_event_default (pad, parent, event);
882 gst_avi_demux_handle_src_event (GstPad * pad, GstObject * parent,
886 GstAviDemux *avi = GST_AVI_DEMUX (parent);
888 GST_DEBUG_OBJECT (avi,
889 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
891 switch (GST_EVENT_TYPE (event)) {
893 if (!avi->streaming) {
894 res = gst_avi_demux_handle_seek (avi, pad, event);
896 res = gst_avi_demux_handle_seek_push (avi, pad, event);
898 gst_event_unref (event);
901 case GST_EVENT_NAVIGATION:
903 gst_event_unref (event);
906 res = gst_pad_event_default (pad, parent, event);
913 /* streaming helper (push) */
916 * gst_avi_demux_peek_chunk_info:
918 * @tag: holder for tag
919 * @size: holder for tag size
921 * Peek next chunk info (tag and size)
923 * Returns: TRUE when one chunk info has been got
926 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
928 const guint8 *data = NULL;
930 if (gst_adapter_available (avi->adapter) < 8)
933 data = gst_adapter_map (avi->adapter, 8);
934 *tag = GST_READ_UINT32_LE (data);
935 *size = GST_READ_UINT32_LE (data + 4);
936 gst_adapter_unmap (avi->adapter);
942 * gst_avi_demux_peek_chunk:
944 * @tag: holder for tag
945 * @size: holder for tag size
947 * Peek enough data for one full chunk
949 * Returns: %TRUE when one chunk has been got
952 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
954 guint32 peek_size = 0;
957 if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
960 /* size 0 -> empty data buffer would surprise most callers,
961 * large size -> do not bother trying to squeeze that into adapter,
962 * so we throw poor man's exception, which can be caught if caller really
963 * wants to handle 0 size chunk */
964 if (!(*size) || (*size) >= (1 << 30))
967 peek_size = (*size + 1) & ~1;
968 available = gst_adapter_available (avi->adapter);
970 GST_DEBUG_OBJECT (avi,
971 "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
972 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
974 if (available < (8 + peek_size))
982 GST_INFO_OBJECT (avi, "Failed to peek");
987 GST_INFO_OBJECT (avi,
988 "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
989 GST_FOURCC_ARGS (*tag));
990 /* chain should give up */
991 avi->abort_buffering = TRUE;
996 GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
997 available, 8 + peek_size);
1005 * gst_avi_demux_parse_file_header:
1006 * @element: caller element (used for errors/debug).
1007 * @buf: input data to be used for parsing.
1009 * "Open" a RIFF/AVI file. The buffer should be at least 12
1010 * bytes long. Takes ownership of @buf.
1012 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
1013 * Throws an error, caller should error out (fatal).
1016 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
1021 stamp = gst_util_get_timestamp ();
1023 /* riff_parse posts an error */
1024 if (!gst_riff_parse_file_header (element, buf, &doctype))
1027 if (doctype != GST_RIFF_RIFF_AVI)
1030 stamp = gst_util_get_timestamp () - stamp;
1031 GST_DEBUG_OBJECT (element, "header parsing took %" GST_TIME_FORMAT,
1032 GST_TIME_ARGS (stamp));
1039 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
1040 ("File is not an AVI file: %" GST_FOURCC_FORMAT,
1041 GST_FOURCC_ARGS (doctype)));
1047 * Read AVI file tag when streaming
1049 static GstFlowReturn
1050 gst_avi_demux_stream_init_push (GstAviDemux * avi)
1052 if (gst_adapter_available (avi->adapter) >= 12) {
1055 tmp = gst_adapter_take_buffer (avi->adapter, 12);
1057 GST_DEBUG ("Parsing avi header");
1058 if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), tmp)) {
1059 return GST_FLOW_ERROR;
1061 GST_DEBUG ("header ok");
1064 avi->state = GST_AVI_DEMUX_HEADER;
1072 static GstFlowReturn
1073 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
1076 GstBuffer *buf = NULL;
1078 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
1079 if (res != GST_FLOW_OK)
1081 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
1091 GST_DEBUG_OBJECT (avi, "error parsing file header");
1092 return GST_FLOW_ERROR;
1096 /* AVI header handling */
1098 * gst_avi_demux_parse_avih:
1099 * @avi: caller element (used for errors/debug).
1100 * @buf: input data to be used for parsing.
1101 * @avih: pointer to structure (filled in by function) containing
1102 * stream information (such as flags, number of streams, etc.).
1104 * Read 'avih' header. Discards buffer after use.
1106 * Returns: TRUE on success, FALSE otherwise. Throws an error if
1107 * the header is invalid. The caller should error out
1111 gst_avi_demux_parse_avih (GstAviDemux * avi,
1112 GstBuffer * buf, gst_riff_avih ** _avih)
1114 gst_riff_avih *avih;
1120 size = gst_buffer_get_size (buf);
1121 if (size < sizeof (gst_riff_avih))
1122 goto avih_too_small;
1124 avih = g_malloc (size);
1125 gst_buffer_extract (buf, 0, avih, size);
1127 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1128 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
1129 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
1130 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
1131 avih->flags = GUINT32_FROM_LE (avih->flags);
1132 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
1133 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
1134 avih->streams = GUINT32_FROM_LE (avih->streams);
1135 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
1136 avih->width = GUINT32_FROM_LE (avih->width);
1137 avih->height = GUINT32_FROM_LE (avih->height);
1138 avih->scale = GUINT32_FROM_LE (avih->scale);
1139 avih->rate = GUINT32_FROM_LE (avih->rate);
1140 avih->start = GUINT32_FROM_LE (avih->start);
1141 avih->length = GUINT32_FROM_LE (avih->length);
1145 GST_INFO_OBJECT (avi, "avih tag found:");
1146 GST_INFO_OBJECT (avi, " us_frame %u", avih->us_frame);
1147 GST_INFO_OBJECT (avi, " max_bps %u", avih->max_bps);
1148 GST_INFO_OBJECT (avi, " pad_gran %u", avih->pad_gran);
1149 GST_INFO_OBJECT (avi, " flags 0x%08x", avih->flags);
1150 GST_INFO_OBJECT (avi, " tot_frames %u", avih->tot_frames);
1151 GST_INFO_OBJECT (avi, " init_frames %u", avih->init_frames);
1152 GST_INFO_OBJECT (avi, " streams %u", avih->streams);
1153 GST_INFO_OBJECT (avi, " bufsize %u", avih->bufsize);
1154 GST_INFO_OBJECT (avi, " width %u", avih->width);
1155 GST_INFO_OBJECT (avi, " height %u", avih->height);
1156 GST_INFO_OBJECT (avi, " scale %u", avih->scale);
1157 GST_INFO_OBJECT (avi, " rate %u", avih->rate);
1158 GST_INFO_OBJECT (avi, " start %u", avih->start);
1159 GST_INFO_OBJECT (avi, " length %u", avih->length);
1162 gst_buffer_unref (buf);
1164 if (avih->us_frame != 0 && avih->tot_frames != 0)
1166 (guint64) avih->us_frame * (guint64) avih->tot_frames * 1000;
1168 avi->duration = GST_CLOCK_TIME_NONE;
1170 GST_INFO_OBJECT (avi, " header duration %" GST_TIME_FORMAT,
1171 GST_TIME_ARGS (avi->duration));
1178 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No buffer"));
1183 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
1184 ("Too small avih (%" G_GSIZE_FORMAT " available, %d needed)",
1185 size, (int) sizeof (gst_riff_avih)));
1186 gst_buffer_unref (buf);
1192 * gst_avi_demux_parse_superindex:
1193 * @avi: caller element (used for debugging/errors).
1194 * @buf: input data to use for parsing.
1195 * @locations: locations in the file (byte-offsets) that contain
1196 * the actual indexes (see get_avi_demux_parse_subindex()).
1197 * The array ends with GST_BUFFER_OFFSET_NONE.
1199 * Reads superindex (openDML-2 spec stuff) from the provided data.
1201 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
1202 * on error, but they are not fatal.
1205 gst_avi_demux_parse_superindex (GstAviDemux * avi,
1206 GstBuffer * buf, guint64 ** _indexes)
1218 gst_buffer_map (buf, &map, GST_MAP_READ);
1229 /* check type of index. The opendml2 specs state that
1230 * there should be 4 dwords per array entry. Type can be
1231 * either frame or field (and we don't care). */
1232 if (GST_READ_UINT16_LE (data) != 4 ||
1233 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
1234 GST_WARNING_OBJECT (avi,
1235 "Superindex for stream has unexpected "
1236 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1237 GST_READ_UINT16_LE (data), data[2], data[3]);
1238 bpe = GST_READ_UINT16_LE (data) * 4;
1240 num = GST_READ_UINT32_LE (&data[4]);
1242 GST_DEBUG_OBJECT (avi, "got %d indexes", num);
1244 /* this can't work out well ... */
1245 if (num > G_MAXUINT32 >> 1 || bpe < 8) {
1246 goto invalid_params;
1249 indexes = g_new (guint64, num + 1);
1250 for (i = 0; i < num; i++) {
1251 if (size < 24 + bpe * (i + 1))
1253 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1254 GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
1256 indexes[i] = GST_BUFFER_OFFSET_NONE;
1257 *_indexes = indexes;
1259 gst_buffer_unmap (buf, &map);
1260 gst_buffer_unref (buf);
1267 GST_ERROR_OBJECT (avi,
1268 "Not enough data to parse superindex (%" G_GSIZE_FORMAT
1269 " available, 24 needed)", size);
1271 gst_buffer_unmap (buf, &map);
1272 gst_buffer_unref (buf);
1278 GST_ERROR_OBJECT (avi, "invalid index parameters (num = %d, bpe = %d)",
1280 gst_buffer_unmap (buf, &map);
1281 gst_buffer_unref (buf);
1286 /* add an entry to the index of a stream. @num should be an estimate of the
1287 * total amount of index entries for all streams and is used to dynamically
1288 * allocate memory for the index entries. */
1289 static inline gboolean
1290 gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
1291 guint num, GstAviIndexEntry * entry)
1293 /* ensure index memory */
1294 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
1295 guint idx_max = stream->idx_max;
1296 GstAviIndexEntry *new_idx;
1298 /* we need to make some more room */
1300 /* initial size guess, assume each stream has an equal amount of entries,
1301 * overshoot with at least 8K */
1302 idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
1304 idx_max += 8192 / sizeof (GstAviIndexEntry);
1305 GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
1306 stream->idx_max, idx_max);
1308 new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
1309 /* out of memory, if this fails stream->index is untouched. */
1310 if (G_UNLIKELY (!new_idx))
1313 stream->index = new_idx;
1314 stream->idx_max = idx_max;
1317 /* update entry total and stream stats. The entry total can be converted to
1318 * the timestamp of the entry easily. */
1319 if (stream->strh->type == GST_RIFF_FCC_auds) {
1322 if (stream->is_vbr) {
1323 entry->total = stream->total_blocks;
1325 entry->total = stream->total_bytes;
1327 blockalign = stream->strf.auds->blockalign;
1329 stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
1331 stream->total_blocks++;
1333 if (stream->is_vbr) {
1334 entry->total = stream->idx_n;
1336 entry->total = stream->total_bytes;
1339 stream->total_bytes += entry->size;
1340 if (ENTRY_IS_KEYFRAME (entry))
1341 stream->n_keyframes++;
1344 GST_LOG_OBJECT (avi,
1345 "Adding stream %u, index entry %d, kf %d, size %u "
1346 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
1347 stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
1349 stream->index[stream->idx_n++] = *entry;
1354 /* given @entry_n in @stream, calculate info such as timestamps and
1355 * offsets for the entry. */
1357 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1358 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1359 guint64 * offset, guint64 * offset_end)
1361 GstAviIndexEntry *entry;
1363 entry = &stream->index[entry_n];
1365 if (stream->is_vbr) {
1366 /* VBR stream next timestamp */
1367 if (stream->strh->type == GST_RIFF_FCC_auds) {
1370 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
1372 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1377 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
1379 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1382 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
1383 /* constant rate stream */
1386 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
1388 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
1389 entry->total + entry->size);
1391 if (stream->strh->type == GST_RIFF_FCC_vids) {
1392 /* video offsets are the frame number */
1396 *offset_end = entry_n + 1;
1398 /* no offsets for audio */
1406 /* collect and debug stats about the indexes for all streams.
1407 * This method is also responsible for filling in the stream duration
1408 * as measured by the amount of index entries.
1410 * Returns TRUE if the index is not empty, else FALSE */
1412 gst_avi_demux_do_index_stats (GstAviDemux * avi)
1414 guint total_idx = 0;
1416 #ifndef GST_DISABLE_GST_DEBUG
1417 guint total_max = 0;
1420 /* get stream stats now */
1421 for (i = 0; i < avi->num_streams; i++) {
1422 GstAviStream *stream;
1424 if (G_UNLIKELY (!(stream = &avi->stream[i])))
1426 if (G_UNLIKELY (!stream->strh))
1428 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
1431 /* we interested in the end_ts of the last entry, which is the total
1432 * duration of this stream */
1433 gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
1434 NULL, &stream->idx_duration, NULL, NULL);
1436 total_idx += stream->idx_n;
1437 #ifndef GST_DISABLE_GST_DEBUG
1438 total_max += stream->idx_max;
1440 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
1441 "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
1442 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
1443 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
1444 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
1445 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
1447 total_idx *= sizeof (GstAviIndexEntry);
1448 #ifndef GST_DISABLE_GST_DEBUG
1449 total_max *= sizeof (GstAviIndexEntry);
1451 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
1452 total_max, total_idx, total_max - total_idx);
1454 if (total_idx == 0) {
1455 GST_WARNING_OBJECT (avi, "Index is empty !");
1462 * gst_avi_demux_parse_subindex:
1464 * @buf: input data to use for parsing.
1465 * @stream: stream context.
1466 * @entries_list: a list (returned by the function) containing all the
1467 * indexes parsed in this specific subindex. The first
1468 * entry is also a pointer to allocated memory that needs
1469 * to be free´ed. May be NULL if no supported indexes were
1472 * Reads superindex (openDML-2 spec stuff) from the provided data.
1473 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1475 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1476 * throw an error, caller should bail out asap.
1479 gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
1491 gst_buffer_map (buf, &map, GST_MAP_READ);
1498 /* We don't support index-data yet */
1500 goto not_implemented;
1502 /* check type of index. The opendml2 specs state that
1503 * there should be 4 dwords per array entry. Type can be
1504 * either frame or field (and we don't care). */
1505 bpe = (data[2] & 0x01) ? 12 : 8;
1506 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1507 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1508 GST_WARNING_OBJECT (avi,
1509 "Superindex for stream %d has unexpected "
1510 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1511 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1512 bpe = GST_READ_UINT16_LE (data) * 4;
1514 num = GST_READ_UINT32_LE (&data[4]);
1515 baseoff = GST_READ_UINT64_LE (&data[12]);
1517 /* If there's nothing, just return ! */
1521 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1523 for (i = 0; i < num; i++) {
1524 GstAviIndexEntry entry;
1526 if (map.size < 24 + bpe * (i + 1))
1529 /* fill in offset and size. offset contains the keyframe flag in the
1531 entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1532 entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1534 if (stream->strh->type == GST_RIFF_FCC_auds) {
1535 /* all audio frames are keyframes */
1536 ENTRY_SET_KEYFRAME (&entry);
1538 /* else read flags */
1539 entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
1541 entry.size &= ~0x80000000;
1544 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
1548 gst_buffer_unmap (buf, &map);
1549 gst_buffer_unref (buf);
1556 GST_ERROR_OBJECT (avi,
1557 "Not enough data to parse subindex (%" G_GSIZE_FORMAT
1558 " available, 24 needed)", map.size);
1559 goto done; /* continue */
1563 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1564 ("Subindex-is-data is not implemented"));
1565 gst_buffer_unmap (buf, &map);
1566 gst_buffer_unref (buf);
1571 GST_DEBUG_OBJECT (avi, "the index is empty");
1572 goto done; /* continue */
1576 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1577 ("Cannot allocate memory for %u*%u=%u bytes",
1578 (guint) sizeof (GstAviIndexEntry), num,
1579 (guint) sizeof (GstAviIndexEntry) * num));
1580 gst_buffer_unmap (buf, &map);
1581 gst_buffer_unref (buf);
1587 * Create and push a flushing seek event upstream
1590 perform_seek_to_offset (GstAviDemux * demux, guint64 offset)
1595 GST_DEBUG_OBJECT (demux, "Seeking to %" G_GUINT64_FORMAT, offset);
1598 gst_event_new_seek (1.0, GST_FORMAT_BYTES,
1599 GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
1600 GST_SEEK_TYPE_NONE, -1);
1602 res = gst_pad_push_event (demux->sinkpad, event);
1605 demux->offset = offset;
1610 * Read AVI index when streaming
1613 gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
1615 guint32 tag = 0, size;
1616 GstBuffer *buf = NULL;
1619 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1621 if (avi->odml_subidxs[avi->odml_subidx] != avi->offset)
1624 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1627 /* this is the ODML chunk we expect */
1628 odml_stream = avi->odml_stream;
1630 if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + odml_stream / 10,
1631 '0' + odml_stream % 10)) &&
1632 (tag != GST_MAKE_FOURCC ('0' + odml_stream / 10,
1633 '0' + odml_stream % 10, 'i', 'x'))) {
1634 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1635 GST_FOURCC_ARGS (tag));
1639 avi->offset += 8 + GST_ROUND_UP_2 (size);
1640 /* flush chunk header so we get just the 'size' payload data */
1641 gst_adapter_flush (avi->adapter, 8);
1642 buf = gst_adapter_take_buffer (avi->adapter, size);
1644 if (!gst_avi_demux_parse_subindex (avi, &avi->stream[odml_stream], buf))
1647 /* we parsed the index, go to next subindex */
1650 if (avi->odml_subidxs[avi->odml_subidx] == GST_BUFFER_OFFSET_NONE) {
1651 /* we reached the end of the indexes for this stream, move to the next
1652 * stream to handle the first index */
1654 avi->odml_subidx = 0;
1656 if (avi->odml_stream < avi->num_streams) {
1657 /* there are more indexes */
1658 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
1660 /* we're done, get stream stats now */
1661 avi->have_index = gst_avi_demux_do_index_stats (avi);
1667 /* seek to next index */
1668 return perform_seek_to_offset (avi, avi->odml_subidxs[avi->odml_subidx]);
1675 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
1681 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1683 for (n = 0; n < avi->num_streams; n++) {
1684 GstAviStream *stream = &avi->stream[n];
1686 if (stream->indexes == NULL)
1689 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1690 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
1691 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1693 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1694 '0' + stream->num % 10)) &&
1695 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1696 '0' + stream->num % 10, 'i', 'x'))) {
1697 /* Some ODML files (created by god knows what muxer) have a ##ix format
1698 * instead of the 'official' ix##. They are still valid though. */
1699 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1700 GST_FOURCC_ARGS (tag));
1701 gst_buffer_unref (buf);
1705 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1709 g_free (stream->indexes);
1710 stream->indexes = NULL;
1712 /* get stream stats now */
1713 avi->have_index = gst_avi_demux_do_index_stats (avi);
1717 * gst_avi_demux_riff_parse_vprp:
1718 * @element: caller element (used for debugging/error).
1719 * @buf: input data to be used for parsing, stripped from header.
1720 * @vprp: a pointer (returned by this function) to a filled-in vprp
1721 * structure. Caller should free it.
1723 * Parses a video stream´s vprp. This function takes ownership of @buf.
1725 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1726 * should be skipped on error, but it is not fatal.
1729 gst_avi_demux_riff_parse_vprp (GstElement * element,
1730 GstBuffer * buf, gst_riff_vprp ** _vprp)
1732 gst_riff_vprp *vprp;
1736 g_return_val_if_fail (buf != NULL, FALSE);
1737 g_return_val_if_fail (_vprp != NULL, FALSE);
1739 size = gst_buffer_get_size (buf);
1741 if (size < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1744 vprp = g_malloc (size);
1745 gst_buffer_extract (buf, 0, vprp, size);
1747 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1748 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1749 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1750 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1751 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1752 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1753 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1754 vprp->width = GUINT32_FROM_LE (vprp->width);
1755 vprp->height = GUINT32_FROM_LE (vprp->height);
1756 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1760 /* calculate fields based on size */
1761 k = (size - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) / vprp->fields;
1762 if (vprp->fields > k) {
1763 GST_WARNING_OBJECT (element,
1764 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1767 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1768 GST_WARNING_OBJECT (element,
1769 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1770 GST_RIFF_VPRP_VIDEO_FIELDS);
1771 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1773 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1774 for (k = 0; k < vprp->fields; k++) {
1775 gst_riff_vprp_video_field_desc *fd;
1777 fd = &vprp->field_info[k];
1778 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1779 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1780 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1781 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1782 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1783 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1784 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1785 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1790 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1791 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1792 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1793 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1794 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1795 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1796 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1797 vprp->aspect & 0xffff);
1798 GST_INFO_OBJECT (element, " width %d", vprp->width);
1799 GST_INFO_OBJECT (element, " height %d", vprp->height);
1800 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1801 for (k = 0; k < vprp->fields; k++) {
1802 gst_riff_vprp_video_field_desc *fd;
1804 fd = &(vprp->field_info[k]);
1805 GST_INFO_OBJECT (element, " field %u description:", k);
1806 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1807 fd->compressed_bm_height);
1808 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1809 fd->compressed_bm_width);
1810 GST_INFO_OBJECT (element, " valid_bm_height %d",
1811 fd->valid_bm_height);
1812 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1813 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1814 fd->valid_bm_x_offset);
1815 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1816 fd->valid_bm_y_offset);
1817 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1818 fd->video_x_t_offset);
1819 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1822 gst_buffer_unref (buf);
1831 GST_ERROR_OBJECT (element,
1832 "Too small vprp (%" G_GSIZE_FORMAT " available, at least %d needed)",
1833 size, (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1834 gst_buffer_unref (buf);
1840 gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
1844 GST_DEBUG_OBJECT (avi, "force : %d", force);
1846 for (i = 0; i < avi->num_streams; i++) {
1847 GstAviStream *stream = &avi->stream[i];
1849 if (force || stream->idx_n != 0) {
1850 GST_LOG_OBJECT (avi, "Adding pad %s" GST_PTR_FORMAT,
1851 GST_PAD_NAME (stream->pad));
1852 gst_element_add_pad ((GstElement *) avi, stream->pad);
1855 if (avi->element_index)
1856 gst_index_get_writer_id (avi->element_index,
1857 GST_OBJECT_CAST (stream->pad), &stream->index_id);
1860 stream->exposed = TRUE;
1861 if (avi->main_stream == -1)
1862 avi->main_stream = i;
1864 GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
1866 gst_avi_demux_reset_stream (avi, stream);
1871 /* buf contains LIST chunk data, and will be padded to even size,
1872 * since some buggy files do not account for the padding of chunks
1873 * within a LIST in the size of the LIST */
1875 gst_avi_demux_roundup_list (GstAviDemux * avi, GstBuffer ** buf)
1879 size = gst_buffer_get_size (*buf);
1881 if (G_UNLIKELY (size & 1)) {
1885 GST_DEBUG_OBJECT (avi, "rounding up dubious list size %" G_GSIZE_FORMAT,
1887 obuf = gst_buffer_new_and_alloc (size + 1);
1889 gst_buffer_map (obuf, &map, GST_MAP_WRITE);
1890 gst_buffer_extract (*buf, 0, map.data, size);
1891 /* assume 0 padding, at least makes outcome deterministic */
1893 gst_buffer_unmap (obuf, &map);
1894 gst_buffer_replace (buf, obuf);
1899 * gst_avi_demux_parse_stream:
1900 * @avi: calling element (used for debugging/errors).
1901 * @buf: input buffer used to parse the stream.
1903 * Parses all subchunks in a strl chunk (which defines a single
1904 * stream). Discards the buffer after use. This function will
1905 * increment the stream counter internally.
1907 * Returns: whether the stream was identified successfully.
1908 * Errors are not fatal. It does indicate the stream
1912 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1914 GstAviStream *stream;
1915 GstElementClass *klass;
1916 GstPadTemplate *templ;
1917 GstBuffer *sub = NULL;
1920 gchar *codec_name = NULL, *padname = NULL;
1921 const gchar *tag_name;
1922 GstCaps *caps = NULL;
1924 GstElement *element;
1925 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1926 gst_riff_vprp *vprp = NULL;
1928 element = GST_ELEMENT_CAST (avi);
1930 GST_DEBUG_OBJECT (avi, "Parsing stream");
1932 gst_avi_demux_roundup_list (avi, &buf);
1934 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1935 GST_WARNING_OBJECT (avi,
1936 "maximum no of streams (%d) exceeded, ignoring stream",
1937 GST_AVI_DEMUX_MAX_STREAMS);
1938 gst_buffer_unref (buf);
1939 /* not a fatal error, let's say */
1943 stream = &avi->stream[avi->num_streams];
1945 /* initial settings */
1946 stream->idx_duration = GST_CLOCK_TIME_NONE;
1947 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1948 stream->duration = GST_CLOCK_TIME_NONE;
1950 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1951 /* sub can be NULL if the chunk is empty */
1953 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1954 GST_FOURCC_ARGS (tag));
1958 case GST_RIFF_TAG_strh:
1960 gst_riff_strh *strh;
1963 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1966 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1967 /* ownership given away */
1969 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1973 strh = stream->strh;
1974 /* sanity check; stream header frame rate matches global header
1976 if (stream->strh->type == GST_RIFF_FCC_vids) {
1978 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1980 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1981 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1982 "frame duration = %d ms", strh->rate, strh->scale,
1983 (gint) (s_dur / GST_MSECOND));
1984 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1985 strh->rate = GST_SECOND / GST_USECOND;
1986 strh->scale = h_dur / GST_USECOND;
1987 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1988 strh->rate, strh->scale);
1991 /* determine duration as indicated by header */
1992 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1993 strh->scale, GST_SECOND, (guint64) strh->rate);
1994 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1995 GST_TIME_ARGS (stream->hdr_duration));
1996 if (stream->hdr_duration == 0)
1997 stream->hdr_duration = GST_CLOCK_TIME_NONE;
2002 case GST_RIFF_TAG_strf:
2004 gboolean res = FALSE;
2007 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
2011 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
2014 switch (stream->strh->type) {
2015 case GST_RIFF_FCC_vids:
2016 stream->is_vbr = TRUE;
2017 res = gst_riff_parse_strf_vids (element, sub,
2018 &stream->strf.vids, &stream->extradata);
2020 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
2022 case GST_RIFF_FCC_auds:
2024 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
2025 &stream->extradata);
2029 stream->is_vbr = (stream->strh->samplesize == 0)
2030 && stream->strh->scale > 1
2031 && stream->strf.auds->blockalign != 1;
2032 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
2033 stream->is_vbr, res);
2034 /* we need these or we have no way to come up with timestamps */
2035 if ((!stream->is_vbr && !stream->strf.auds->av_bps) ||
2036 (stream->is_vbr && (!stream->strh->scale ||
2037 !stream->strh->rate))) {
2038 GST_WARNING_OBJECT (element,
2039 "invalid audio header, ignoring stream");
2042 /* some more sanity checks */
2043 if (stream->is_vbr) {
2044 if (stream->strf.auds->blockalign <= 4) {
2045 /* that would mean (too) many frames per chunk,
2046 * so not likely set as expected */
2047 GST_DEBUG_OBJECT (element,
2048 "suspicious blockalign %d for VBR audio; "
2049 "overriding to 1 frame per chunk",
2050 stream->strf.auds->blockalign);
2051 /* this should top any likely value */
2052 stream->strf.auds->blockalign = (1 << 12);
2056 case GST_RIFF_FCC_iavs:
2057 stream->is_vbr = TRUE;
2058 res = gst_riff_parse_strf_iavs (element, sub,
2059 &stream->strf.iavs, &stream->extradata);
2061 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
2063 case GST_RIFF_FCC_txts:
2064 /* nothing to parse here */
2065 stream->is_vbr = (stream->strh->samplesize == 0)
2066 && (stream->strh->scale > 1);
2070 GST_ERROR_OBJECT (avi,
2071 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
2072 GST_FOURCC_ARGS (stream->strh->type));
2076 gst_buffer_unref (sub);
2084 case GST_RIFF_TAG_vprp:
2087 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
2091 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
2095 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
2099 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
2100 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
2101 /* not considered fatal */
2109 case GST_RIFF_TAG_strd:
2110 if (stream->initdata)
2111 gst_buffer_unref (stream->initdata);
2112 stream->initdata = sub;
2115 case GST_RIFF_TAG_strn:
2116 g_free (stream->name);
2120 gst_buffer_map (sub, &map, GST_MAP_READ);
2121 stream->name = g_strndup ((gchar *) map.data, map.size);
2122 gst_buffer_unmap (sub, &map);
2123 gst_buffer_unref (sub);
2126 stream->name = g_strdup ("");
2128 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
2131 gst_avi_demux_parse_idit (avi, sub);
2134 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
2135 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
2136 '0' + avi->num_streams % 10)) {
2137 g_free (stream->indexes);
2138 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
2139 stream->superindex = TRUE;
2143 GST_WARNING_OBJECT (avi,
2144 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
2145 GST_FOURCC_ARGS (tag));
2147 case GST_RIFF_TAG_JUNQ:
2148 case GST_RIFF_TAG_JUNK:
2152 gst_buffer_unref (sub);
2158 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
2163 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
2167 /* get class to figure out the template */
2168 klass = GST_ELEMENT_GET_CLASS (avi);
2170 /* we now have all info, let´s set up a pad and a caps and be done */
2171 /* create stream name + pad */
2172 switch (stream->strh->type) {
2173 case GST_RIFF_FCC_vids:{
2176 fourcc = (stream->strf.vids->compression) ?
2177 stream->strf.vids->compression : stream->strh->fcc_handler;
2178 padname = g_strdup_printf ("video_%u", avi->num_v_streams);
2179 templ = gst_element_class_get_pad_template (klass, "video_%u");
2180 caps = gst_riff_create_video_caps (fourcc, stream->strh,
2181 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
2183 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2184 G_TYPE_INT, fourcc, NULL);
2185 } else if (got_vprp && vprp) {
2186 guint32 aspect_n, aspect_d;
2189 aspect_n = vprp->aspect >> 16;
2190 aspect_d = vprp->aspect & 0xffff;
2191 /* calculate the pixel aspect ratio using w/h and aspect ratio */
2192 n = aspect_n * stream->strf.vids->height;
2193 d = aspect_d * stream->strf.vids->width;
2195 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
2197 /* very local, not needed elsewhere */
2201 tag_name = GST_TAG_VIDEO_CODEC;
2202 avi->num_v_streams++;
2205 case GST_RIFF_FCC_auds:{
2206 /* FIXME: Do something with the channel reorder map */
2207 padname = g_strdup_printf ("audio_%u", avi->num_a_streams);
2208 templ = gst_element_class_get_pad_template (klass, "audio_%u");
2209 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
2210 stream->strh, stream->strf.auds, stream->extradata,
2211 stream->initdata, &codec_name, NULL);
2213 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
2214 G_TYPE_INT, stream->strf.auds->format, NULL);
2216 tag_name = GST_TAG_AUDIO_CODEC;
2217 avi->num_a_streams++;
2220 case GST_RIFF_FCC_iavs:{
2221 guint32 fourcc = stream->strh->fcc_handler;
2223 padname = g_strdup_printf ("video_%u", avi->num_v_streams);
2224 templ = gst_element_class_get_pad_template (klass, "video_%u");
2225 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
2226 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
2228 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2229 G_TYPE_INT, fourcc, NULL);
2231 tag_name = GST_TAG_VIDEO_CODEC;
2232 avi->num_v_streams++;
2235 case GST_RIFF_FCC_txts:{
2236 padname = g_strdup_printf ("subtitle_%u", avi->num_t_streams);
2237 templ = gst_element_class_get_pad_template (klass, "subtitle_%u");
2238 caps = gst_caps_new_empty_simple ("application/x-subtitle-avi");
2240 avi->num_t_streams++;
2244 g_return_val_if_reached (FALSE);
2247 /* no caps means no stream */
2249 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
2253 GST_DEBUG_OBJECT (element, "codec-name=%s",
2254 (codec_name ? codec_name : "NULL"));
2255 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
2257 /* set proper settings and add it */
2259 gst_object_unref (stream->pad);
2260 pad = stream->pad = gst_pad_new_from_template (templ, padname);
2263 gst_pad_use_fixed_caps (pad);
2265 gst_pad_set_formats_function (pad,
2266 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
2267 gst_pad_set_event_mask_function (pad,
2268 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
2270 gst_pad_set_event_function (pad,
2271 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
2272 gst_pad_set_query_function (pad,
2273 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
2275 gst_pad_set_convert_function (pad,
2276 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
2279 stream->num = avi->num_streams;
2281 stream->start_entry = 0;
2282 stream->step_entry = 0;
2283 stream->stop_entry = 0;
2285 stream->current_entry = -1;
2286 stream->current_total = 0;
2288 stream->last_flow = GST_FLOW_OK;
2289 stream->discont = TRUE;
2291 stream->total_bytes = 0;
2292 stream->total_blocks = 0;
2293 stream->n_keyframes = 0;
2296 stream->idx_max = 0;
2298 gst_pad_set_element_private (pad, stream);
2301 gst_pad_set_active (pad, TRUE);
2302 gst_pad_set_caps (pad, caps);
2303 gst_caps_unref (caps);
2307 if (!stream->taglist)
2308 stream->taglist = gst_tag_list_new_empty ();
2310 avi->got_tags = TRUE;
2312 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
2314 g_free (codec_name);
2317 gst_buffer_unref (buf);
2324 /* unref any mem that may be in use */
2326 gst_buffer_unref (buf);
2328 gst_buffer_unref (sub);
2330 g_free (codec_name);
2331 gst_avi_demux_reset_stream (avi, stream);
2338 * gst_avi_demux_parse_odml:
2339 * @avi: calling element (used for debug/error).
2340 * @buf: input buffer to be used for parsing.
2342 * Read an openDML-2.0 extension header. Fills in the frame number
2343 * in the avi demuxer object when reading succeeds.
2346 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
2350 GstBuffer *sub = NULL;
2352 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2355 case GST_RIFF_TAG_dmlh:{
2356 gst_riff_dmlh dmlh, *_dmlh;
2359 /* sub == NULL is possible and means an empty buffer */
2363 gst_buffer_map (sub, &map, GST_MAP_READ);
2366 if (map.size < sizeof (gst_riff_dmlh)) {
2367 GST_ERROR_OBJECT (avi,
2368 "DMLH entry is too small (%" G_GSIZE_FORMAT " bytes, %d needed)",
2369 map.size, (int) sizeof (gst_riff_dmlh));
2370 gst_buffer_unmap (sub, &map);
2373 _dmlh = (gst_riff_dmlh *) map.data;
2374 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
2375 gst_buffer_unmap (sub, &map);
2377 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
2380 avi->avih->tot_frames = dmlh.totalframes;
2385 GST_WARNING_OBJECT (avi,
2386 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
2387 GST_FOURCC_ARGS (tag));
2389 case GST_RIFF_TAG_JUNQ:
2390 case GST_RIFF_TAG_JUNK:
2392 /* skip and move to next chunk */
2394 gst_buffer_unref (sub);
2401 gst_buffer_unref (buf);
2406 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
2408 return stream->idx_n;
2411 /* find a previous entry in the index with the given flags */
2413 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
2414 guint last, gboolean keyframe)
2416 GstAviIndexEntry *entry;
2419 for (i = last; i > 0; i--) {
2420 entry = &stream->index[i - 1];
2421 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2429 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
2430 guint last, gboolean keyframe)
2432 GstAviIndexEntry *entry;
2435 for (i = last + 1; i < stream->idx_n; i++) {
2436 entry = &stream->index[i];
2437 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2441 return stream->idx_n - 1;
2445 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
2447 if (entry->total < *total)
2449 else if (entry->total > *total)
2455 * gst_avi_demux_index_for_time:
2457 * @stream: the stream
2458 * @time: a time position
2460 * Finds the index entry which time is less or equal than the requested time.
2461 * Try to avoid binary search when we can convert the time to an index
2462 * position directly (for example for video frames with a fixed duration).
2464 * Returns: the found position in the index.
2467 gst_avi_demux_index_for_time (GstAviDemux * avi,
2468 GstAviStream * stream, guint64 time)
2473 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
2475 /* easy (and common) cases */
2476 if (time == 0 || stream->idx_n == 0)
2478 if (time >= stream->idx_duration)
2479 return stream->idx_n - 1;
2481 /* figure out where we need to go. For that we convert the time to an
2482 * index entry or we convert it to a total and then do a binary search. */
2483 if (stream->is_vbr) {
2484 /* VBR stream next timestamp */
2485 if (stream->strh->type == GST_RIFF_FCC_auds) {
2486 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
2488 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
2491 /* constant rate stream */
2492 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
2496 GstAviIndexEntry *entry;
2498 /* no index, find index with binary search on total */
2499 GST_LOG_OBJECT (avi, "binary search for entry with total %"
2500 G_GUINT64_FORMAT, total);
2502 entry = gst_util_array_binary_search (stream->index,
2503 stream->idx_n, sizeof (GstAviIndexEntry),
2504 (GCompareDataFunc) gst_avi_demux_index_entry_search,
2505 GST_SEARCH_MODE_BEFORE, &total, NULL);
2507 if (entry == NULL) {
2508 GST_LOG_OBJECT (avi, "not found, assume index 0");
2511 index = entry - stream->index;
2512 GST_LOG_OBJECT (avi, "found at %u", index);
2515 GST_LOG_OBJECT (avi, "converted time to index %u", index);
2521 static inline GstAviStream *
2522 gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
2525 GstAviStream *stream;
2527 /* get the stream for this entry */
2528 stream_nr = CHUNKID_TO_STREAMNR (id);
2529 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2530 GST_WARNING_OBJECT (avi, "invalid stream nr %d", stream_nr);
2533 stream = &avi->stream[stream_nr];
2534 if (G_UNLIKELY (!stream->strh)) {
2535 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2542 * gst_avi_demux_parse_index:
2543 * @avi: calling element (used for debugging/errors).
2544 * @buf: buffer containing the full index.
2546 * Read index entries from the provided buffer.
2547 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2550 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2554 gst_riff_index_entry *index;
2556 GstAviStream *stream;
2557 GstAviIndexEntry entry;
2563 gst_buffer_map (buf, &map, GST_MAP_READ);
2565 stamp = gst_util_get_timestamp ();
2567 /* see how many items in the index */
2568 num = map.size / sizeof (gst_riff_index_entry);
2572 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2574 index = (gst_riff_index_entry *) map.data;
2576 /* figure out if the index is 0 based or relative to the MOVI start */
2577 entry.offset = GST_READ_UINT32_LE (&index[0].offset);
2578 if (entry.offset < avi->offset) {
2579 avi->index_offset = avi->offset + 8;
2580 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2582 avi->index_offset = 0;
2583 GST_DEBUG ("index is 0 based");
2586 for (i = 0, n = 0; i < num; i++) {
2587 id = GST_READ_UINT32_LE (&index[i].id);
2588 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2590 /* some sanity checks */
2591 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2592 (entry.offset == 0 && n > 0)))
2595 /* get the stream for this entry */
2596 stream = gst_avi_demux_stream_for_id (avi, id);
2597 if (G_UNLIKELY (!stream))
2600 /* handle offset and size */
2601 entry.offset += avi->index_offset + 8;
2602 entry.size = GST_READ_UINT32_LE (&index[i].size);
2605 if (stream->strh->type == GST_RIFF_FCC_auds) {
2606 /* all audio frames are keyframes */
2607 ENTRY_SET_KEYFRAME (&entry);
2610 /* else read flags */
2611 flags = GST_READ_UINT32_LE (&index[i].flags);
2612 if (flags & GST_RIFF_IF_KEYFRAME) {
2613 ENTRY_SET_KEYFRAME (&entry);
2615 ENTRY_UNSET_KEYFRAME (&entry);
2620 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2625 gst_buffer_unmap (buf, &map);
2626 gst_buffer_unref (buf);
2628 /* get stream stats now */
2629 avi->have_index = gst_avi_demux_do_index_stats (avi);
2631 stamp = gst_util_get_timestamp () - stamp;
2632 GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT,
2633 GST_TIME_ARGS (stamp));
2640 GST_DEBUG_OBJECT (avi, "empty index");
2641 gst_buffer_unmap (buf, &map);
2642 gst_buffer_unref (buf);
2647 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2648 ("Cannot allocate memory for %u*%u=%u bytes",
2649 (guint) sizeof (GstAviIndexEntry), num,
2650 (guint) sizeof (GstAviIndexEntry) * num));
2651 gst_buffer_unmap (buf, &map);
2652 gst_buffer_unref (buf);
2658 * gst_avi_demux_stream_index:
2659 * @avi: avi demuxer object.
2661 * Seeks to index and reads it.
2664 gst_avi_demux_stream_index (GstAviDemux * avi)
2667 guint64 offset = avi->offset;
2668 GstBuffer *buf = NULL;
2673 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2675 /* get chunk information */
2676 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2677 if (res != GST_FLOW_OK)
2680 gst_buffer_map (buf, &map, GST_MAP_READ);
2684 /* check tag first before blindy trying to read 'size' bytes */
2685 tag = GST_READ_UINT32_LE (map.data);
2686 size = GST_READ_UINT32_LE (map.data + 4);
2687 if (tag == GST_RIFF_TAG_LIST) {
2688 /* this is the movi tag */
2689 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2690 (8 + GST_ROUND_UP_2 (size)));
2691 offset += 8 + GST_ROUND_UP_2 (size);
2692 gst_buffer_unmap (buf, &map);
2693 gst_buffer_unref (buf);
2696 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2697 if (res != GST_FLOW_OK)
2700 gst_buffer_map (buf, &map, GST_MAP_READ);
2704 tag = GST_READ_UINT32_LE (map.data);
2705 size = GST_READ_UINT32_LE (map.data + 4);
2707 gst_buffer_unmap (buf, &map);
2708 gst_buffer_unref (buf);
2710 if (tag != GST_RIFF_TAG_idx1)
2715 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2717 /* read chunk, advance offset */
2718 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2719 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2722 GST_DEBUG ("will parse index chunk size %" G_GSIZE_FORMAT " for tag %"
2723 GST_FOURCC_FORMAT, gst_buffer_get_size (buf), GST_FOURCC_ARGS (tag));
2725 gst_avi_demux_parse_index (avi, buf);
2727 #ifndef GST_DISABLE_GST_DEBUG
2728 /* debug our indexes */
2731 GstAviStream *stream;
2733 for (i = 0; i < avi->num_streams; i++) {
2734 stream = &avi->stream[i];
2735 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2736 i, stream->idx_n, stream->total_bytes);
2745 GST_DEBUG_OBJECT (avi,
2746 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2751 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2752 gst_buffer_unmap (buf, &map);
2753 gst_buffer_unref (buf);
2758 GST_WARNING_OBJECT (avi,
2759 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2760 GST_FOURCC_ARGS (tag));
2765 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2771 * gst_avi_demux_stream_index_push:
2772 * @avi: avi demuxer object.
2777 gst_avi_demux_stream_index_push (GstAviDemux * avi)
2779 guint64 offset = avi->idx1_offset;
2784 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2786 /* get chunk information */
2787 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
2790 /* check tag first before blindly trying to read 'size' bytes */
2791 if (tag == GST_RIFF_TAG_LIST) {
2792 /* this is the movi tag */
2793 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2794 (8 + GST_ROUND_UP_2 (size)));
2795 avi->idx1_offset = offset + 8 + GST_ROUND_UP_2 (size);
2796 /* issue seek to allow chain function to handle it and return! */
2797 perform_seek_to_offset (avi, avi->idx1_offset);
2801 if (tag != GST_RIFF_TAG_idx1)
2804 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2806 /* flush chunk header */
2807 gst_adapter_flush (avi->adapter, 8);
2808 /* read chunk payload */
2809 buf = gst_adapter_take_buffer (avi->adapter, size);
2812 /* advance offset */
2813 offset += 8 + GST_ROUND_UP_2 (size);
2815 GST_DEBUG ("will parse index chunk size %" G_GSIZE_FORMAT " for tag %"
2816 GST_FOURCC_FORMAT, gst_buffer_get_size (buf), GST_FOURCC_ARGS (tag));
2818 avi->offset = avi->first_movi_offset;
2819 gst_avi_demux_parse_index (avi, buf);
2821 #ifndef GST_DISABLE_GST_DEBUG
2822 /* debug our indexes */
2825 GstAviStream *stream;
2827 for (i = 0; i < avi->num_streams; i++) {
2828 stream = &avi->stream[i];
2829 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2830 i, stream->idx_n, stream->total_bytes);
2839 GST_DEBUG_OBJECT (avi,
2840 "taking data from adapter failed: pos=%" G_GUINT64_FORMAT " size=%u",
2846 GST_WARNING_OBJECT (avi,
2847 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2848 GST_FOURCC_ARGS (tag));
2854 * gst_avi_demux_peek_tag:
2856 * Returns the tag and size of the next chunk
2858 static GstFlowReturn
2859 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2862 GstFlowReturn res = GST_FLOW_OK;
2863 GstBuffer *buf = NULL;
2866 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2867 if (res != GST_FLOW_OK)
2870 gst_buffer_map (buf, &map, GST_MAP_READ);
2874 *tag = GST_READ_UINT32_LE (map.data);
2875 *size = GST_READ_UINT32_LE (map.data + 4);
2877 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2878 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2879 *size, offset + 8, offset + 8 + (gint64) * size);
2882 gst_buffer_unmap (buf, &map);
2883 gst_buffer_unref (buf);
2890 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2895 GST_DEBUG_OBJECT (avi, "got %" G_GSIZE_FORMAT " bytes which is <> 8 bytes",
2897 res = GST_FLOW_ERROR;
2903 * gst_avi_demux_next_data_buffer:
2905 * Returns the offset and size of the next buffer
2906 * Position is the position of the buffer (after tag and size)
2908 static GstFlowReturn
2909 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2910 guint32 * tag, guint * size)
2912 guint64 off = *offset;
2917 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2918 if (res != GST_FLOW_OK)
2920 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2921 off += 8 + 4; /* skip tag + size + subtag */
2933 * gst_avi_demux_stream_scan:
2934 * @avi: calling element (used for debugging/errors).
2936 * Scan the file for all chunks to "create" a new index.
2940 gst_avi_demux_stream_scan (GstAviDemux * avi)
2943 GstAviStream *stream;
2951 * - implement non-seekable source support.
2953 GST_DEBUG_OBJECT (avi, "Creating index");
2955 /* get the size of the file */
2956 if (!gst_pad_peer_query_duration (avi->sinkpad, GST_FORMAT_BYTES, &tmplength))
2960 /* guess the total amount of entries we expect */
2964 GstAviIndexEntry entry;
2967 /* start reading data buffers to find the id and offset */
2968 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2969 if (G_UNLIKELY (res != GST_FLOW_OK))
2973 stream = gst_avi_demux_stream_for_id (avi, tag);
2974 if (G_UNLIKELY (!stream))
2977 /* we can't figure out the keyframes, assume they all are */
2978 entry.flags = GST_AVI_KEYFRAME;
2982 /* and add to the index of this stream */
2983 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2987 /* update position */
2988 pos += GST_ROUND_UP_2 (size);
2989 if (G_UNLIKELY (pos > length)) {
2990 GST_WARNING_OBJECT (avi,
2991 "Stopping index lookup since we are further than EOF");
2997 avi->have_index = gst_avi_demux_do_index_stats (avi);
3004 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
3005 ("Cannot allocate memory for %u*%u=%u bytes",
3006 (guint) sizeof (GstAviIndexEntry), num,
3007 (guint) sizeof (GstAviIndexEntry) * num));
3013 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
3017 GstAviStream *stream;
3019 total = GST_CLOCK_TIME_NONE;
3021 /* all streams start at a timestamp 0 */
3022 for (i = 0; i < avi->num_streams; i++) {
3023 GstClockTime duration, hduration;
3024 gst_riff_strh *strh;
3026 stream = &avi->stream[i];
3027 if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh)))
3030 /* get header duration for the stream */
3031 hduration = stream->hdr_duration;
3032 /* index duration calculated during parsing */
3033 duration = stream->idx_duration;
3035 /* now pick a good duration */
3036 if (GST_CLOCK_TIME_IS_VALID (duration)) {
3037 /* index gave valid duration, use that */
3038 GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT,
3039 stream, GST_TIME_ARGS (duration));
3041 /* fall back to header info to calculate a duration */
3042 duration = hduration;
3044 GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT,
3045 i, GST_TIME_ARGS (duration));
3046 /* set duration for the stream */
3047 stream->duration = duration;
3049 /* find total duration */
3050 if (total == GST_CLOCK_TIME_NONE ||
3051 (GST_CLOCK_TIME_IS_VALID (duration) && duration > total))
3055 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
3056 /* now update the duration for those streams where we had none */
3057 for (i = 0; i < avi->num_streams; i++) {
3058 stream = &avi->stream[i];
3060 if (!GST_CLOCK_TIME_IS_VALID (stream->duration)
3061 || stream->duration == 0) {
3062 stream->duration = total;
3064 GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT,
3065 stream, GST_TIME_ARGS (total));
3070 /* and set the total duration in the segment. */
3071 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
3072 GST_TIME_ARGS (total));
3074 avi->segment.duration = total;
3077 /* returns FALSE if there are no pads to deliver event to,
3078 * otherwise TRUE (whatever the outcome of event sending),
3079 * takes ownership of the event. */
3081 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
3083 gboolean result = FALSE;
3086 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
3087 GST_EVENT_TYPE_NAME (event), avi->num_streams);
3089 for (i = 0; i < avi->num_streams; i++) {
3090 GstAviStream *stream = &avi->stream[i];
3094 gst_pad_push_event (stream->pad, gst_event_ref (event));
3097 gst_event_unref (event);
3102 gst_avi_demux_check_seekability (GstAviDemux * avi)
3105 gboolean seekable = FALSE;
3106 gint64 start = -1, stop = -1;
3108 query = gst_query_new_seeking (GST_FORMAT_BYTES);
3109 if (!gst_pad_peer_query (avi->sinkpad, query)) {
3110 GST_DEBUG_OBJECT (avi, "seeking query failed");
3114 gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
3116 /* try harder to query upstream size if we didn't get it the first time */
3117 if (seekable && stop == -1) {
3118 GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
3119 gst_pad_peer_query_duration (avi->sinkpad, GST_FORMAT_BYTES, &stop);
3122 /* if upstream doesn't know the size, it's likely that it's not seekable in
3123 * practice even if it technically may be seekable */
3124 if (seekable && (start != 0 || stop <= start)) {
3125 GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
3130 GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
3131 G_GUINT64_FORMAT ")", seekable, start, stop);
3132 avi->seekable = seekable;
3134 gst_query_unref (query);
3138 * Read AVI headers when streaming
3140 static GstFlowReturn
3141 gst_avi_demux_stream_header_push (GstAviDemux * avi)
3143 GstFlowReturn ret = GST_FLOW_OK;
3148 GstBuffer *buf = NULL, *sub = NULL;
3151 GstTagList *tags = NULL;
3154 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
3156 switch (avi->header_state) {
3157 case GST_AVI_DEMUX_HEADER_TAG_LIST:
3158 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3159 avi->offset += 8 + GST_ROUND_UP_2 (size);
3160 if (tag != GST_RIFF_TAG_LIST)
3161 goto header_no_list;
3163 gst_adapter_flush (avi->adapter, 8);
3164 /* Find the 'hdrl' LIST tag */
3165 GST_DEBUG ("Reading %d bytes", size);
3166 buf = gst_adapter_take_buffer (avi->adapter, size);
3168 gst_buffer_extract (buf, 0, fourcc, 4);
3170 if (GST_READ_UINT32_LE (fourcc) != GST_RIFF_LIST_hdrl)
3171 goto header_no_hdrl;
3175 gst_adapter_flush (avi->adapter, 1);
3177 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
3179 gst_avi_demux_roundup_list (avi, &buf);
3181 /* the hdrl starts with a 'avih' header */
3182 if (!gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3184 goto header_no_avih;
3186 if (tag != GST_RIFF_TAG_avih)
3187 goto header_no_avih;
3189 if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3190 goto header_wrong_avih;
3192 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
3194 /* now, read the elements from the header until the end */
3195 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3197 /* sub can be NULL on empty tags */
3202 case GST_RIFF_TAG_LIST:
3203 if (gst_buffer_get_size (sub) < 4)
3206 gst_buffer_extract (sub, 0, fourcc, 4);
3208 switch (GST_READ_UINT32_LE (fourcc)) {
3209 case GST_RIFF_LIST_strl:
3210 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3212 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3213 ("failed to parse stream, ignoring"));
3218 case GST_RIFF_LIST_odml:
3219 gst_avi_demux_parse_odml (avi, sub);
3223 GST_WARNING_OBJECT (avi,
3224 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3225 GST_FOURCC_ARGS (GST_READ_UINT32_LE (fourcc)));
3227 case GST_RIFF_TAG_JUNQ:
3228 case GST_RIFF_TAG_JUNK:
3233 gst_avi_demux_parse_idit (avi, sub);
3236 GST_WARNING_OBJECT (avi,
3237 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
3238 offset, GST_FOURCC_ARGS (tag));
3240 case GST_RIFF_TAG_JUNQ:
3241 case GST_RIFF_TAG_JUNK:
3243 /* move to next chunk */
3245 gst_buffer_unref (sub);
3250 gst_buffer_unref (buf);
3251 GST_DEBUG ("elements parsed");
3253 /* check parsed streams */
3254 if (avi->num_streams == 0) {
3256 } else if (avi->num_streams != avi->avih->streams) {
3257 GST_WARNING_OBJECT (avi,
3258 "Stream header mentioned %d streams, but %d available",
3259 avi->avih->streams, avi->num_streams);
3261 GST_DEBUG ("Get junk and info next");
3262 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
3264 /* Need more data */
3268 case GST_AVI_DEMUX_HEADER_INFO:
3269 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
3271 if (gst_adapter_available (avi->adapter) < 12)
3274 data = gst_adapter_map (avi->adapter, 12);
3275 tag = GST_READ_UINT32_LE (data);
3276 size = GST_READ_UINT32_LE (data + 4);
3277 ltag = GST_READ_UINT32_LE (data + 8);
3278 gst_adapter_unmap (avi->adapter);
3280 if (tag == GST_RIFF_TAG_LIST) {
3282 case GST_RIFF_LIST_movi:
3283 gst_adapter_flush (avi->adapter, 12);
3284 if (!avi->first_movi_offset)
3285 avi->first_movi_offset = avi->offset;
3287 avi->idx1_offset = avi->offset + size - 4;
3289 case GST_RIFF_LIST_INFO:
3290 GST_DEBUG ("Found INFO chunk");
3291 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3292 GST_DEBUG ("got size %d", size);
3294 gst_adapter_flush (avi->adapter, 12);
3296 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
3299 gst_adapter_flush (avi->adapter, 1);
3300 gst_riff_parse_info (GST_ELEMENT_CAST (avi), buf, &tags);
3302 if (avi->globaltags) {
3303 gst_tag_list_insert (avi->globaltags, tags,
3304 GST_TAG_MERGE_REPLACE);
3306 avi->globaltags = tags;
3310 gst_buffer_unref (buf);
3312 avi->offset += GST_ROUND_UP_2 (size) - 4;
3314 GST_DEBUG ("skipping INFO LIST prefix");
3317 /* Need more data */
3322 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3323 avi->offset += 8 + GST_ROUND_UP_2 (size);
3324 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3325 // ??? goto iterate; ???
3327 /* Need more data */
3333 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3334 avi->offset += 8 + GST_ROUND_UP_2 (size);
3335 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3338 /* Need more data */
3345 GST_WARNING ("unhandled header state: %d", avi->header_state);
3350 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3351 avi->num_streams, avi->stream[0].indexes);
3353 GST_DEBUG ("Found movi chunk. Starting to stream data");
3354 avi->state = GST_AVI_DEMUX_MOVI;
3356 /* no indexes in push mode, but it still sets some variables */
3357 gst_avi_demux_calculate_durations_from_index (avi);
3359 gst_avi_demux_expose_streams (avi, TRUE);
3361 /* prepare all streams for index 0 */
3362 for (i = 0; i < avi->num_streams; i++)
3363 avi->stream[i].current_entry = 0;
3365 /* create initial NEWSEGMENT event */
3367 gst_event_unref (avi->seg_event);
3368 avi->seg_event = gst_event_new_segment (&avi->segment);
3370 gst_avi_demux_check_seekability (avi);
3372 /* at this point we know all the streams and we can signal the no more
3374 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3375 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3382 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3383 return GST_FLOW_ERROR;
3387 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3388 ("Invalid AVI header (no LIST at start): %"
3389 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3390 return GST_FLOW_ERROR;
3394 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3395 ("Invalid AVI header (no hdrl at start): %"
3396 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3397 gst_buffer_unref (buf);
3398 return GST_FLOW_ERROR;
3402 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3403 ("Invalid AVI header (no avih at start): %"
3404 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3406 gst_buffer_unref (sub);
3408 gst_buffer_unref (buf);
3409 return GST_FLOW_ERROR;
3413 gst_buffer_unref (buf);
3414 return GST_FLOW_ERROR;
3419 gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d,
3420 gint h, gint min, gint s)
3425 date = g_date_new_dmy (d, m, y);
3426 if (!g_date_valid (date)) {
3428 GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
3433 dt = gst_date_time_new_local_time (y, m, d, h, min, s);
3435 if (avi->globaltags == NULL)
3436 avi->globaltags = gst_tag_list_new_empty ();
3438 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
3442 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE_TIME,
3444 gst_date_time_unref (dt);
3449 gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data)
3452 gint hr = 0, min = 0, sec = 0;
3455 GST_DEBUG ("data : '%s'", data);
3457 ret = sscanf (data, "%d:%d:%d %d:%d:%d", &y, &m, &d, &hr, &min, &sec);
3459 /* Attempt YYYY/MM/DD/ HH:MM variant (found in CASIO cameras) */
3460 ret = sscanf (data, "%04d/%02d/%02d/ %d:%d", &y, &m, &d, &hr, &min);
3462 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3466 gst_avi_demux_add_date_tag (avi, y, m, d, hr, min, sec);
3470 get_month_num (gchar * data, guint size)
3472 if (g_ascii_strncasecmp (data, "jan", 3) == 0) {
3474 } else if (g_ascii_strncasecmp (data, "feb", 3) == 0) {
3476 } else if (g_ascii_strncasecmp (data, "mar", 3) == 0) {
3478 } else if (g_ascii_strncasecmp (data, "apr", 3) == 0) {
3480 } else if (g_ascii_strncasecmp (data, "may", 3) == 0) {
3482 } else if (g_ascii_strncasecmp (data, "jun", 3) == 0) {
3484 } else if (g_ascii_strncasecmp (data, "jul", 3) == 0) {
3486 } else if (g_ascii_strncasecmp (data, "aug", 3) == 0) {
3488 } else if (g_ascii_strncasecmp (data, "sep", 3) == 0) {
3490 } else if (g_ascii_strncasecmp (data, "oct", 3) == 0) {
3492 } else if (g_ascii_strncasecmp (data, "nov", 3) == 0) {
3494 } else if (g_ascii_strncasecmp (data, "dec", 3) == 0) {
3502 gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data)
3504 gint year, month, day;
3505 gint hour, min, sec;
3510 ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour,
3513 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3516 month = get_month_num (monthstr, strlen (monthstr));
3517 gst_avi_demux_add_date_tag (avi, year, month, day, hour, min, sec);
3521 gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
3526 gchar *safedata = NULL;
3528 gst_buffer_map (buf, &map, GST_MAP_READ);
3531 * http://www.eden-foundation.org/products/code/film_date_stamp/index.html
3533 * This tag could be in one of the below formats
3534 * 2005:08:17 11:42:43
3535 * THU OCT 26 16:46:04 2006
3536 * Mon Mar 3 09:44:56 2008
3538 * FIXME: Our date tag doesn't include hours
3541 /* skip eventual initial whitespace */
3542 ptr = (gchar *) map.data;
3545 while (left > 0 && g_ascii_isspace (ptr[0])) {
3554 /* make a safe copy to add a \0 to the end of the string */
3555 safedata = g_strndup (ptr, left);
3557 /* test if the first char is a alpha or a number */
3558 if (g_ascii_isdigit (ptr[0])) {
3559 gst_avi_demux_parse_idit_nums_only (avi, safedata);
3562 } else if (g_ascii_isalpha (ptr[0])) {
3563 gst_avi_demux_parse_idit_text (avi, safedata);
3571 GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
3572 gst_buffer_unmap (buf, &map);
3576 * Read full AVI headers.
3578 static GstFlowReturn
3579 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3582 GstBuffer *buf, *sub = NULL;
3585 GstElement *element = GST_ELEMENT_CAST (avi);
3587 GstTagList *tags = NULL;
3590 stamp = gst_util_get_timestamp ();
3592 /* the header consists of a 'hdrl' LIST tag */
3593 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3594 if (res != GST_FLOW_OK)
3595 goto pull_range_failed;
3596 else if (tag != GST_RIFF_TAG_LIST)
3598 else if (gst_buffer_get_size (buf) < 4)
3601 GST_DEBUG_OBJECT (avi, "parsing headers");
3603 /* Find the 'hdrl' LIST tag */
3604 gst_buffer_extract (buf, 0, fourcc, 4);
3605 while (GST_READ_UINT32_LE (fourcc) != GST_RIFF_LIST_hdrl) {
3606 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3607 GST_FOURCC_ARGS (GST_READ_UINT32_LE (fourcc)));
3610 gst_buffer_unref (buf);
3612 /* read new chunk */
3613 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3614 if (res != GST_FLOW_OK)
3615 goto pull_range_failed;
3616 else if (tag != GST_RIFF_TAG_LIST)
3618 else if (gst_buffer_get_size (buf) < 4)
3620 gst_buffer_extract (buf, 0, fourcc, 4);
3623 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3625 gst_avi_demux_roundup_list (avi, &buf);
3627 /* the hdrl starts with a 'avih' header */
3628 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3630 else if (tag != GST_RIFF_TAG_avih)
3632 else if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3635 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3637 /* now, read the elements from the header until the end */
3638 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3641 /* sub can be NULL on empty tags */
3645 gst_buffer_map (sub, &map, GST_MAP_READ);
3648 case GST_RIFF_TAG_LIST:
3652 switch (GST_READ_UINT32_LE (map.data)) {
3653 case GST_RIFF_LIST_strl:
3654 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3655 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3656 ("failed to parse stream, ignoring"));
3661 case GST_RIFF_LIST_odml:
3662 gst_avi_demux_parse_odml (avi, sub);
3665 case GST_RIFF_LIST_INFO:
3666 gst_buffer_resize (sub, 4, -1);
3667 gst_riff_parse_info (element, sub, &tags);
3669 if (avi->globaltags) {
3670 gst_tag_list_insert (avi->globaltags, tags,
3671 GST_TAG_MERGE_REPLACE);
3673 avi->globaltags = tags;
3679 GST_WARNING_OBJECT (avi,
3680 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3681 GST_FOURCC_ARGS (GST_READ_UINT32_LE (map.data)));
3682 GST_MEMDUMP_OBJECT (avi, "Unknown list", map.data, map.size);
3684 case GST_RIFF_TAG_JUNQ:
3685 case GST_RIFF_TAG_JUNK:
3690 gst_avi_demux_parse_idit (avi, sub);
3693 GST_WARNING_OBJECT (avi,
3694 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3695 GST_FOURCC_ARGS (tag), offset);
3696 GST_MEMDUMP_OBJECT (avi, "Unknown tag", map.data, map.size);
3698 case GST_RIFF_TAG_JUNQ:
3699 case GST_RIFF_TAG_JUNK:
3702 gst_buffer_unmap (sub, &map);
3703 gst_buffer_unref (sub);
3709 gst_buffer_unref (buf);
3710 GST_DEBUG ("elements parsed");
3712 /* check parsed streams */
3713 if (avi->num_streams == 0)
3715 else if (avi->num_streams != avi->avih->streams) {
3716 GST_WARNING_OBJECT (avi,
3717 "Stream header mentioned %d streams, but %d available",
3718 avi->avih->streams, avi->num_streams);
3721 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3722 G_GUINT64_FORMAT, avi->offset);
3724 /* Now, find the data (i.e. skip all junk between header and data) */
3731 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3732 if (res != GST_FLOW_OK) {
3733 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3734 goto pull_range_failed;
3735 } else if (gst_buffer_get_size (buf) < 12) {
3736 GST_DEBUG_OBJECT (avi,
3737 "got %" G_GSIZE_FORMAT " bytes which is less than 12 bytes",
3738 gst_buffer_get_size (buf));
3739 gst_buffer_unref (buf);
3740 return GST_FLOW_ERROR;
3743 gst_buffer_map (buf, &map, GST_MAP_READ);
3744 tag = GST_READ_UINT32_LE (map.data);
3745 size = GST_READ_UINT32_LE (map.data + 4);
3746 ltag = GST_READ_UINT32_LE (map.data + 8);
3748 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3749 GST_FOURCC_ARGS (tag), size);
3750 GST_MEMDUMP ("Tag content", map.data, map.size);
3751 gst_buffer_unmap (buf, &map);
3752 gst_buffer_unref (buf);
3755 case GST_RIFF_TAG_LIST:{
3757 case GST_RIFF_LIST_movi:
3758 GST_DEBUG_OBJECT (avi,
3759 "Reached the 'movi' tag, we're done with skipping");
3761 case GST_RIFF_LIST_INFO:
3763 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3765 if (res != GST_FLOW_OK) {
3766 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3767 goto pull_range_failed;
3769 GST_DEBUG ("got size %" G_GSIZE_FORMAT, gst_buffer_get_size (buf));
3771 GST_DEBUG ("skipping INFO LIST prefix");
3772 avi->offset += (4 - GST_ROUND_UP_2 (size));
3773 gst_buffer_unref (buf);
3777 sub = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, 4, -1);
3778 gst_riff_parse_info (element, sub, &tags);
3780 if (avi->globaltags) {
3781 gst_tag_list_insert (avi->globaltags, tags,
3782 GST_TAG_MERGE_REPLACE);
3784 avi->globaltags = tags;
3789 gst_buffer_unref (sub);
3792 gst_buffer_unref (buf);
3793 /* gst_riff_read_chunk() has already advanced avi->offset */
3796 GST_WARNING_OBJECT (avi,
3797 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3798 GST_FOURCC_ARGS (ltag));
3799 avi->offset += 8 + GST_ROUND_UP_2 (size);
3805 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3806 GST_FOURCC_ARGS (tag));
3808 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3809 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3810 /* Only get buffer for debugging if the memdump is needed */
3811 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
3813 res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf);
3814 if (res != GST_FLOW_OK) {
3815 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3816 goto pull_range_failed;
3818 gst_buffer_map (buf, &map, GST_MAP_READ);
3819 GST_MEMDUMP ("Junk", map.data, map.size);
3820 gst_buffer_unmap (buf, &map);
3821 gst_buffer_unref (buf);
3823 avi->offset += 8 + GST_ROUND_UP_2 (size);
3829 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3830 avi->num_streams, avi->stream[0].indexes);
3832 /* create or read stream index (for seeking) */
3833 if (avi->stream[0].indexes != NULL) {
3834 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3835 gst_avi_demux_read_subindexes_pull (avi);
3837 if (!avi->have_index) {
3838 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
3839 gst_avi_demux_stream_index (avi);
3841 /* still no index, scan */
3842 if (!avi->have_index) {
3843 gst_avi_demux_stream_scan (avi);
3845 /* still no index.. this is a fatal error for now.
3846 * FIXME, we should switch to plain push mode without seeking
3847 * instead of failing. */
3848 if (!avi->have_index)
3852 /* use the indexes now to construct nice durations */
3853 gst_avi_demux_calculate_durations_from_index (avi);
3855 gst_avi_demux_expose_streams (avi, FALSE);
3857 /* do initial seek to the default segment values */
3858 gst_avi_demux_do_seek (avi, &avi->segment);
3860 /* create initial NEWSEGMENT event */
3862 gst_event_unref (avi->seg_event);
3863 avi->seg_event = gst_event_new_segment (&avi->segment);
3865 stamp = gst_util_get_timestamp () - stamp;
3866 GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT,
3867 GST_TIME_ARGS (stamp));
3869 /* at this point we know all the streams and we can signal the no more
3871 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3872 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3879 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3880 ("Invalid AVI header (no LIST at start): %"
3881 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3882 gst_buffer_unref (buf);
3883 return GST_FLOW_ERROR;
3887 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3888 ("Invalid AVI header (no hdrl at start): %"
3889 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3890 gst_buffer_unref (buf);
3891 return GST_FLOW_ERROR;
3895 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3896 ("Invalid AVI header (no avih at start): %"
3897 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3899 gst_buffer_unref (sub);
3900 gst_buffer_unref (buf);
3901 return GST_FLOW_ERROR;
3905 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3906 ("Invalid AVI header (cannot parse avih at start)"));
3907 gst_buffer_unref (buf);
3908 return GST_FLOW_ERROR;
3912 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3913 return GST_FLOW_ERROR;
3917 GST_WARNING ("file without or too big index");
3918 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3919 ("Could not get/create index"));
3920 return GST_FLOW_ERROR;
3924 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3925 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3926 return GST_FLOW_ERROR;
3930 /* move a stream to @index */
3932 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
3933 GstSegment * segment, guint index)
3935 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
3937 if (segment->rate < 0.0) {
3939 /* Because we don't know the frame order we need to push from the prev keyframe
3940 * to the next keyframe. If there is a smart decoder downstream he will notice
3941 * that there are too many encoded frames send and return EOS when there
3942 * are enough decoded frames to fill the segment. */
3943 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
3945 /* FIXME, we go back to 0, we should look at segment.start. We will however
3946 * stop earlier when the see the timestamp < segment.start */
3947 stream->start_entry = 0;
3948 stream->step_entry = index;
3949 stream->current_entry = index;
3950 stream->stop_entry = next_key;
3952 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
3953 stream->start_entry, stream->step_entry, stream->stop_entry);
3955 stream->start_entry = index;
3956 stream->step_entry = index;
3957 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
3959 if (stream->current_entry != index) {
3960 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
3961 stream->current_entry, index);
3962 stream->current_entry = index;
3963 stream->discont = TRUE;
3966 /* update the buffer info */
3967 gst_avi_demux_get_buffer_info (avi, stream, index,
3968 &stream->current_timestamp, &stream->current_ts_end,
3969 &stream->current_offset, &stream->current_offset_end);
3971 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
3972 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3973 ", off_end %" G_GUINT64_FORMAT, index,
3974 GST_TIME_ARGS (stream->current_timestamp),
3975 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3976 stream->current_offset_end);
3978 GST_DEBUG_OBJECT (avi, "Seeking to offset %" G_GUINT64_FORMAT,
3979 stream->index[index].offset);
3983 * Do the actual seeking.
3986 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3988 GstClockTime seek_time;
3989 gboolean keyframe, before, after;
3991 GstAviStream *stream;
3993 seek_time = segment->position;
3994 keyframe = ! !(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3995 before = ! !(segment->flags & GST_SEEK_FLAG_SNAP_BEFORE);
3996 after = ! !(segment->flags & GST_SEEK_FLAG_SNAP_AFTER);
3998 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
3999 " keyframe seeking:%d, %s", GST_TIME_ARGS (seek_time), keyframe,
4000 snap_types[before ? 1 : 0][after ? 1 : 0]);
4002 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4003 * which is mostly correct... */
4004 stream = &avi->stream[avi->main_stream];
4006 /* get the entry index for the requested position */
4007 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
4008 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
4010 /* check if we are already on a keyframe */
4011 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4014 next = after && !before;
4015 if (segment->rate < 0)
4019 GST_DEBUG_OBJECT (avi, "not keyframe, searching forward");
4020 /* now go to the next keyframe, this is where we should start
4022 index = gst_avi_demux_index_next (avi, stream, index, TRUE);
4023 GST_DEBUG_OBJECT (avi, "next keyframe at %u", index);
4025 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
4026 /* now go to the previous keyframe, this is where we should start
4028 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4029 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
4033 /* move the main stream to this position */
4034 gst_avi_demux_move_stream (avi, stream, segment, index);
4037 /* when seeking to a keyframe, we update the result seek time
4038 * to the time of the keyframe. */
4039 seek_time = stream->current_timestamp;
4040 GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
4041 GST_TIME_ARGS (seek_time));
4044 /* the seek time is also the position and stream time when going
4046 segment->position = seek_time;
4047 if (segment->rate > 0.0)
4048 segment->time = seek_time;
4050 /* now set DISCONT and align the other streams */
4051 for (i = 0; i < avi->num_streams; i++) {
4052 GstAviStream *ostream;
4054 ostream = &avi->stream[i];
4055 if ((ostream == stream) || (ostream->index == NULL))
4058 /* get the entry index for the requested position */
4059 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
4061 /* move to previous keyframe */
4062 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
4063 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
4065 gst_avi_demux_move_stream (avi, ostream, segment, index);
4067 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
4068 GST_TIME_ARGS (seek_time));
4074 * Handle seek event in pull mode.
4077 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4082 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4086 GstSegment seeksegment = { 0, };
4090 GST_DEBUG_OBJECT (avi, "doing seek with event");
4092 gst_event_parse_seek (event, &rate, &format, &flags,
4093 &cur_type, &cur, &stop_type, &stop);
4095 /* we have to have a format as the segment format. Try to convert
4097 if (format != GST_FORMAT_TIME) {
4098 gboolean res = TRUE;
4100 if (cur_type != GST_SEEK_TYPE_NONE)
4101 res = gst_pad_query_convert (pad, format, cur, GST_FORMAT_TIME, &cur);
4102 if (res && stop_type != GST_SEEK_TYPE_NONE)
4103 res = gst_pad_query_convert (pad, format, stop, GST_FORMAT_TIME, &stop);
4107 format = GST_FORMAT_TIME;
4109 GST_DEBUG_OBJECT (avi,
4110 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
4111 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
4112 /* FIXME: can we do anything with rate!=1.0 */
4114 GST_DEBUG_OBJECT (avi, "doing seek without event");
4119 /* save flush flag */
4120 flush = flags & GST_SEEK_FLAG_FLUSH;
4123 GstEvent *fevent = gst_event_new_flush_start ();
4125 /* for a flushing seek, we send a flush_start on all pads. This will
4126 * eventually stop streaming with a WRONG_STATE. We can thus eventually
4127 * take the STREAM_LOCK. */
4128 GST_DEBUG_OBJECT (avi, "sending flush start");
4129 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4130 gst_pad_push_event (avi->sinkpad, fevent);
4132 /* a non-flushing seek, we PAUSE the task so that we can take the
4134 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
4135 gst_pad_pause_task (avi->sinkpad);
4138 /* wait for streaming to stop */
4139 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
4140 GST_PAD_STREAM_LOCK (avi->sinkpad);
4142 /* copy segment, we need this because we still need the old
4143 * segment when we close the current segment. */
4144 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4147 GST_DEBUG_OBJECT (avi, "configuring seek");
4148 gst_segment_do_seek (&seeksegment, rate, format, flags,
4149 cur_type, cur, stop_type, stop, &update);
4151 /* do the seek, seeksegment.position contains the new position, this
4152 * actually never fails. */
4153 gst_avi_demux_do_seek (avi, &seeksegment);
4156 GstEvent *fevent = gst_event_new_flush_stop (TRUE);
4158 GST_DEBUG_OBJECT (avi, "sending flush stop");
4159 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4160 gst_pad_push_event (avi->sinkpad, fevent);
4163 /* now update the real segment info */
4164 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
4166 /* post the SEGMENT_START message when we do segmented playback */
4167 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4168 gst_element_post_message (GST_ELEMENT_CAST (avi),
4169 gst_message_new_segment_start (GST_OBJECT_CAST (avi),
4170 avi->segment.format, avi->segment.position));
4173 /* queue the segment event for the streaming thread. */
4175 gst_event_unref (avi->seg_event);
4176 avi->seg_event = gst_event_new_segment (&avi->segment);
4178 if (!avi->streaming) {
4179 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4180 avi->sinkpad, NULL);
4182 /* reset the last flow and mark discont, seek is always DISCONT */
4183 for (i = 0; i < avi->num_streams; i++) {
4184 GST_DEBUG_OBJECT (avi, "marking DISCONT");
4185 avi->stream[i].last_flow = GST_FLOW_OK;
4186 avi->stream[i].discont = TRUE;
4188 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
4195 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4201 * Handle seek event in push mode.
4204 avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4209 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4211 gboolean keyframe, before, after;
4212 GstAviStream *stream;
4216 GstSegment seeksegment;
4219 /* check we have the index */
4220 if (!avi->have_index) {
4221 GST_DEBUG_OBJECT (avi, "no seek index built, seek aborted.");
4224 GST_DEBUG_OBJECT (avi, "doing push-based seek with event");
4227 gst_event_parse_seek (event, &rate, &format, &flags,
4228 &cur_type, &cur, &stop_type, &stop);
4230 if (format != GST_FORMAT_TIME) {
4231 gboolean res = TRUE;
4233 if (cur_type != GST_SEEK_TYPE_NONE)
4234 res = gst_pad_query_convert (pad, format, cur, GST_FORMAT_TIME, &cur);
4235 if (res && stop_type != GST_SEEK_TYPE_NONE)
4236 res = gst_pad_query_convert (pad, format, stop, GST_FORMAT_TIME, &stop);
4238 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4242 format = GST_FORMAT_TIME;
4245 /* let gst_segment handle any tricky stuff */
4246 GST_DEBUG_OBJECT (avi, "configuring seek");
4247 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4248 gst_segment_do_seek (&seeksegment, rate, format, flags,
4249 cur_type, cur, stop_type, stop, &update);
4251 keyframe = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
4252 cur = seeksegment.position;
4253 before = ! !(flags & GST_SEEK_FLAG_SNAP_BEFORE);
4254 after = ! !(flags & GST_SEEK_FLAG_SNAP_AFTER);
4256 GST_DEBUG_OBJECT (avi,
4257 "Seek requested: ts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
4258 ", kf %u, %s, rate %lf", GST_TIME_ARGS (cur), GST_TIME_ARGS (stop),
4259 keyframe, snap_types[before ? 1 : 0][after ? 1 : 0], rate);
4262 GST_DEBUG_OBJECT (avi, "negative rate seek not supported in push mode");
4266 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4267 * which is mostly correct... */
4268 str_num = avi->main_stream;
4269 stream = &avi->stream[str_num];
4271 /* get the entry index for the requested position */
4272 index = gst_avi_demux_index_for_time (avi, stream, cur);
4273 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT,
4274 str_num, index, GST_TIME_ARGS (cur));
4276 /* check if we are already on a keyframe */
4277 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4280 next = after && !before;
4281 if (seeksegment.rate < 0)
4285 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching forward");
4286 /* now go to the next keyframe, this is where we should start
4288 index = gst_avi_demux_index_next (avi, stream, index, TRUE);
4289 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index);
4291 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4292 /* now go to the previous keyframe, this is where we should start
4294 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4295 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index);
4299 gst_avi_demux_get_buffer_info (avi, stream, index,
4300 &stream->current_timestamp, &stream->current_ts_end,
4301 &stream->current_offset, &stream->current_offset_end);
4303 /* re-use cur to be the timestamp of the seek as it _will_ be */
4304 cur = stream->current_timestamp;
4306 min_offset = stream->index[index].offset;
4307 avi->seek_kf_offset = min_offset - 8;
4309 GST_DEBUG_OBJECT (avi,
4310 "Seek to: ts %" GST_TIME_FORMAT " (on str %u, idx %u, offset %"
4311 G_GUINT64_FORMAT ")", GST_TIME_ARGS (stream->current_timestamp), str_num,
4314 for (n = 0; n < avi->num_streams; n++) {
4315 GstAviStream *str = &avi->stream[n];
4318 if (n == avi->main_stream)
4321 /* get the entry index for the requested position */
4322 idx = gst_avi_demux_index_for_time (avi, str, cur);
4323 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT, n,
4324 idx, GST_TIME_ARGS (cur));
4326 /* check if we are already on a keyframe */
4327 if (!ENTRY_IS_KEYFRAME (&str->index[idx])) {
4328 if (after && !before) {
4329 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching forward");
4330 /* now go to the next keyframe, this is where we should start
4332 idx = gst_avi_demux_index_next (avi, str, idx, TRUE);
4333 GST_DEBUG_OBJECT (avi, "Found next keyframe at %u", idx);
4335 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4336 /* now go to the previous keyframe, this is where we should start
4338 idx = gst_avi_demux_index_prev (avi, str, idx, TRUE);
4339 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", idx);
4343 gst_avi_demux_get_buffer_info (avi, str, idx,
4344 &str->current_timestamp, &str->current_ts_end,
4345 &str->current_offset, &str->current_offset_end);
4347 if (str->index[idx].offset < min_offset) {
4348 min_offset = str->index[idx].offset;
4349 GST_DEBUG_OBJECT (avi,
4350 "Found an earlier offset at %" G_GUINT64_FORMAT ", str %u",
4358 GST_DEBUG_OBJECT (avi,
4359 "Seek performed: str %u, offset %" G_GUINT64_FORMAT ", idx %u, ts %"
4360 GST_TIME_FORMAT ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4361 ", off_end %" G_GUINT64_FORMAT, str_num, min_offset, index,
4362 GST_TIME_ARGS (stream->current_timestamp),
4363 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4364 stream->current_offset_end);
4366 /* index data refers to data, not chunk header (for pull mode convenience) */
4368 GST_DEBUG_OBJECT (avi, "seeking to chunk at offset %" G_GUINT64_FORMAT,
4371 if (!perform_seek_to_offset (avi, min_offset)) {
4372 GST_DEBUG_OBJECT (avi, "seek event failed!");
4380 * Handle whether we can perform the seek event or if we have to let the chain
4381 * function handle seeks to build the seek indexes first.
4384 gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
4387 /* check for having parsed index already */
4388 if (!avi->have_index) {
4390 gboolean building_index;
4392 GST_OBJECT_LOCK (avi);
4393 /* handle the seek event in the chain function */
4394 avi->state = GST_AVI_DEMUX_SEEK;
4396 /* copy the event */
4397 if (avi->seek_event)
4398 gst_event_unref (avi->seek_event);
4399 avi->seek_event = gst_event_ref (event);
4401 /* set the building_index flag so that only one thread can setup the
4402 * structures for index seeking. */
4403 building_index = avi->building_index;
4404 if (!building_index) {
4405 avi->building_index = TRUE;
4406 if (avi->stream[0].indexes) {
4407 avi->odml_stream = 0;
4408 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
4409 offset = avi->odml_subidxs[0];
4411 offset = avi->idx1_offset;
4414 GST_OBJECT_UNLOCK (avi);
4416 if (!building_index) {
4417 /* seek to the first subindex or legacy index */
4418 GST_INFO_OBJECT (avi,
4419 "Seeking to legacy index/first subindex at %" G_GUINT64_FORMAT,
4421 return perform_seek_to_offset (avi, offset);
4424 /* FIXME: we have to always return true so that we don't block the seek
4426 * Note: maybe it is OK to return true if we're still building the index */
4430 return avi_demux_handle_seek_push (avi, pad, event);
4434 * Helper for gst_avi_demux_invert()
4437 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
4439 memcpy (tmp, d1, bytes);
4440 memcpy (d1, d2, bytes);
4441 memcpy (d2, tmp, bytes);
4445 #define gst_avi_demux_is_uncompressed(fourcc) \
4447 (fourcc == GST_RIFF_DIB || \
4448 fourcc == GST_RIFF_rgb || \
4449 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW))
4452 * Invert DIB buffers... Takes existing buffer and
4453 * returns either the buffer or a new one (with old
4454 * one dereferenced).
4455 * FIXME: can't we preallocate tmp? and remember stride, bpp?
4458 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
4467 if (stream->strh->type != GST_RIFF_FCC_vids)
4470 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
4471 return buf; /* Ignore non DIB buffers */
4474 caps = gst_pad_get_current_caps (stream->pad);
4475 s = gst_caps_get_structure (caps, 0);
4476 gst_caps_unref (caps);
4478 if (!gst_structure_get_int (s, "bpp", &bpp)) {
4479 GST_WARNING ("Failed to retrieve depth from caps");
4483 if (stream->strf.vids == NULL) {
4484 GST_WARNING ("Failed to retrieve vids for stream");
4488 h = stream->strf.vids->height;
4489 w = stream->strf.vids->width;
4490 stride = GST_ROUND_UP_4 (w * (bpp / 8));
4492 buf = gst_buffer_make_writable (buf);
4494 gst_buffer_map (buf, &map, GST_MAP_READWRITE);
4495 if (map.size < (stride * h)) {
4496 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
4497 gst_buffer_unmap (buf, &map);
4501 tmp = g_malloc (stride);
4503 for (y = 0; y < h / 2; y++) {
4504 swap_line (map.data + stride * y, map.data + stride * (h - 1 - y), tmp,
4510 gst_buffer_unmap (buf, &map);
4517 gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
4518 GstClockTime timestamp, guint64 offset, gboolean keyframe)
4520 /* do not add indefinitely for open-ended streaming */
4521 if (G_UNLIKELY (avi->element_index && avi->seekable)) {
4522 GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
4523 G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
4524 gst_index_add_association (avi->element_index, avi->index_id,
4525 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT :
4526 GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp,
4527 GST_FORMAT_BYTES, offset, NULL);
4528 /* current_entry is DEFAULT (frame #) */
4529 gst_index_add_association (avi->element_index, stream->index_id,
4530 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT :
4531 GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp,
4532 GST_FORMAT_BYTES, offset, GST_FORMAT_DEFAULT, stream->current_entry,
4539 * Returns the aggregated GstFlowReturn.
4541 static GstFlowReturn
4542 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
4546 gboolean unexpected = FALSE, not_linked = TRUE;
4548 /* store the value */
4549 stream->last_flow = ret;
4551 /* any other error that is not-linked or eos can be returned right away */
4552 if (G_LIKELY (ret != GST_FLOW_EOS && ret != GST_FLOW_NOT_LINKED))
4555 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
4556 for (i = 0; i < avi->num_streams; i++) {
4557 GstAviStream *ostream = &avi->stream[i];
4559 ret = ostream->last_flow;
4560 /* no unexpected or unlinked, return */
4561 if (G_LIKELY (ret != GST_FLOW_EOS && ret != GST_FLOW_NOT_LINKED))
4564 /* we check to see if we have at least 1 unexpected or all unlinked */
4565 unexpected |= (ret == GST_FLOW_EOS);
4566 not_linked &= (ret == GST_FLOW_NOT_LINKED);
4568 /* when we get here, we all have unlinked or unexpected */
4570 ret = GST_FLOW_NOT_LINKED;
4571 else if (unexpected)
4574 GST_LOG_OBJECT (avi, "combined %s to return %s",
4575 gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret));
4579 /* move @stream to the next position in its index */
4580 static GstFlowReturn
4581 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
4584 guint old_entry, new_entry;
4586 old_entry = stream->current_entry;
4588 new_entry = old_entry + 1;
4590 /* see if we reached the end */
4591 if (new_entry >= stream->stop_entry) {
4592 if (avi->segment.rate < 0.0) {
4593 if (stream->step_entry == stream->start_entry) {
4594 /* we stepped all the way to the start, eos */
4595 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
4598 /* backwards, stop becomes step, find a new step */
4599 stream->stop_entry = stream->step_entry;
4600 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
4601 stream->stop_entry, TRUE);
4603 GST_DEBUG_OBJECT (avi,
4604 "reverse playback jump: start %u, step %u, stop %u",
4605 stream->start_entry, stream->step_entry, stream->stop_entry);
4607 /* and start from the previous keyframe now */
4608 new_entry = stream->step_entry;
4611 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
4616 if (new_entry != old_entry) {
4617 stream->current_entry = new_entry;
4618 stream->current_total = stream->index[new_entry].total;
4620 if (new_entry == old_entry + 1) {
4621 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
4622 old_entry, new_entry);
4623 /* we simply moved one step forwards, reuse current info */
4624 stream->current_timestamp = stream->current_ts_end;
4625 stream->current_offset = stream->current_offset_end;
4626 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4627 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
4629 /* we moved DISCONT, full update */
4630 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4631 &stream->current_timestamp, &stream->current_ts_end,
4632 &stream->current_offset, &stream->current_offset_end);
4633 /* and MARK discont for this stream */
4634 stream->last_flow = GST_FLOW_OK;
4635 stream->discont = TRUE;
4636 GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
4637 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4638 ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
4639 GST_TIME_ARGS (stream->current_timestamp),
4640 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4641 stream->current_offset_end);
4649 GST_DEBUG_OBJECT (avi, "we are EOS");
4650 /* setting current_timestamp to -1 marks EOS */
4651 stream->current_timestamp = -1;
4652 return GST_FLOW_EOS;
4656 /* find the stream with the lowest current position when going forwards or with
4657 * the highest position when going backwards, this is the stream
4658 * we should push from next */
4660 gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
4662 guint64 min_time, max_time;
4663 guint stream_num, i;
4666 min_time = G_MAXUINT64;
4669 for (i = 0; i < avi->num_streams; i++) {
4671 GstAviStream *stream;
4673 stream = &avi->stream[i];
4675 /* ignore streams that finished */
4676 if (stream->last_flow == GST_FLOW_EOS)
4679 position = stream->current_timestamp;
4681 /* position of -1 is EOS */
4682 if (position != -1) {
4683 if (rate > 0.0 && position < min_time) {
4684 min_time = position;
4686 } else if (rate < 0.0 && position >= max_time) {
4687 max_time = position;
4695 static GstFlowReturn
4696 gst_avi_demux_loop_data (GstAviDemux * avi)
4698 GstFlowReturn ret = GST_FLOW_OK;
4700 GstAviStream *stream;
4701 gboolean processed = FALSE;
4703 guint64 offset, size;
4704 GstClockTime timestamp, duration;
4705 guint64 out_offset, out_offset_end;
4707 GstAviIndexEntry *entry;
4710 stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
4713 if (G_UNLIKELY (stream_num == -1)) {
4714 GST_DEBUG_OBJECT (avi, "all streams are EOS");
4718 /* we have the stream now */
4719 stream = &avi->stream[stream_num];
4721 /* skip streams without pads */
4723 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
4728 /* get the timing info for the entry */
4729 timestamp = stream->current_timestamp;
4730 duration = stream->current_ts_end - timestamp;
4731 out_offset = stream->current_offset;
4732 out_offset_end = stream->current_offset_end;
4734 /* get the entry data info */
4735 entry = &stream->index[stream->current_entry];
4736 offset = entry->offset;
4738 keyframe = ENTRY_IS_KEYFRAME (entry);
4740 /* skip empty entries */
4742 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
4743 stream->current_entry, size, stream->pad);
4747 if (avi->segment.rate > 0.0) {
4748 /* only check this for fowards playback for now */
4749 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4750 && (timestamp > avi->segment.stop)) {
4755 GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
4756 G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
4757 stream_num, offset, offset, keyframe);
4759 /* FIXME, check large chunks and cut them up */
4761 /* pull in the data */
4763 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
4764 if (ret != GST_FLOW_OK)
4767 /* check for short buffers, this is EOS as well */
4768 if (gst_buffer_get_size (buf) < size)
4771 /* invert the picture if needed */
4772 buf = gst_avi_demux_invert (stream, buf);
4774 /* mark non-keyframes */
4776 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4777 GST_BUFFER_PTS (buf) = timestamp;
4779 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4780 GST_BUFFER_PTS (buf) = GST_CLOCK_TIME_NONE;
4782 GST_BUFFER_DTS (buf) = timestamp;
4783 GST_BUFFER_DURATION (buf) = duration;
4784 GST_BUFFER_OFFSET (buf) = out_offset;
4785 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
4787 /* mark discont when pending */
4788 if (stream->discont) {
4789 GST_DEBUG_OBJECT (avi, "setting DISCONT flag");
4790 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4791 stream->discont = FALSE;
4794 gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
4797 /* update current position in the segment */
4798 avi->segment.position = timestamp;
4800 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %" G_GSIZE_FORMAT ", ts %"
4801 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4802 ", off_end %" G_GUINT64_FORMAT,
4803 gst_buffer_get_size (buf), GST_TIME_ARGS (timestamp),
4804 GST_TIME_ARGS (duration), out_offset, out_offset_end);
4806 ret = gst_pad_push (stream->pad, buf);
4808 /* mark as processed, we increment the frame and byte counters then
4809 * leave the while loop and return the GstFlowReturn */
4812 if (avi->segment.rate < 0) {
4813 if (timestamp > avi->segment.stop && ret == GST_FLOW_EOS) {
4814 /* In reverse playback we can get a GST_FLOW_EOS when
4815 * we are at the end of the segment, so we just need to jump
4816 * back to the previous section. */
4817 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4822 /* move to next item */
4823 ret = gst_avi_demux_advance (avi, stream, ret);
4826 ret = gst_avi_demux_combine_flows (avi, stream, ret);
4827 } while (!processed);
4835 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
4841 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4842 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4843 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
4845 /* move to next stream */
4850 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
4851 " size=%" G_GUINT64_FORMAT, offset, size);
4856 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4857 ", only got %" G_GSIZE_FORMAT "/%" G_GUINT64_FORMAT
4858 " bytes (truncated file?)", offset, gst_buffer_get_size (buf), size);
4859 gst_buffer_unref (buf);
4866 * Read data. If we have an index it delegates to
4867 * gst_avi_demux_process_next_entry().
4869 static GstFlowReturn
4870 gst_avi_demux_stream_data (GstAviDemux * avi)
4875 GstFlowReturn res = GST_FLOW_OK;
4877 if (G_UNLIKELY (avi->have_eos)) {
4878 /* Clean adapter, we're done */
4879 gst_adapter_clear (avi->adapter);
4880 return GST_FLOW_EOS;
4883 if (G_UNLIKELY (avi->todrop)) {
4886 if ((drop = gst_adapter_available (avi->adapter))) {
4887 if (drop > avi->todrop)
4889 GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
4890 gst_adapter_flush (avi->adapter, drop);
4891 avi->todrop -= drop;
4892 avi->offset += drop;
4896 /* Iterate until need more data, so adapter won't grow too much */
4898 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4902 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4903 GST_FOURCC_ARGS (tag), size);
4905 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4906 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4907 GST_LOG ("Chunk ok");
4908 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4909 GST_DEBUG ("Found sub-index tag");
4910 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4911 /* accept 0 size buffer here */
4912 avi->abort_buffering = FALSE;
4913 GST_DEBUG (" skipping %d bytes for now", size);
4914 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4917 } else if (tag == GST_RIFF_TAG_RIFF) {
4918 /* RIFF tags can appear in ODML files, just jump over them */
4919 if (gst_adapter_available (avi->adapter) >= 12) {
4920 GST_DEBUG ("Found RIFF tag, skipping RIFF header");
4921 gst_adapter_flush (avi->adapter, 12);
4925 } else if (tag == GST_RIFF_TAG_idx1) {
4926 GST_DEBUG ("Found index tag");
4927 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4928 /* accept 0 size buffer here */
4929 avi->abort_buffering = FALSE;
4930 GST_DEBUG (" skipping %d bytes for now", size);
4931 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4934 } else if (tag == GST_RIFF_TAG_LIST) {
4935 /* movi chunks might be grouped in rec list */
4936 if (gst_adapter_available (avi->adapter) >= 12) {
4937 GST_DEBUG ("Found LIST tag, skipping LIST header");
4938 gst_adapter_flush (avi->adapter, 12);
4942 } else if (tag == GST_RIFF_TAG_JUNK || tag == GST_RIFF_TAG_JUNQ) {
4943 /* rec list might contain JUNK chunks */
4944 GST_DEBUG ("Found JUNK tag");
4945 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4946 /* accept 0 size buffer here */
4947 avi->abort_buffering = FALSE;
4948 GST_DEBUG (" skipping %d bytes for now", size);
4949 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4953 GST_DEBUG ("No more stream chunks, send EOS");
4954 avi->have_eos = TRUE;
4955 return GST_FLOW_EOS;
4958 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4959 /* supposedly one hopes to catch a nicer chunk later on ... */
4960 /* FIXME ?? give up here rather than possibly ending up going
4961 * through the whole file */
4962 if (avi->abort_buffering) {
4963 avi->abort_buffering = FALSE;
4965 gst_adapter_flush (avi->adapter, 8);
4972 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4973 GST_FOURCC_ARGS (tag), size);
4975 stream_nr = CHUNKID_TO_STREAMNR (tag);
4977 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4979 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4980 stream_nr, GST_FOURCC_ARGS (tag));
4981 avi->offset += 8 + GST_ROUND_UP_2 (size);
4982 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4984 GstAviStream *stream;
4985 GstClockTime next_ts = 0;
4986 GstBuffer *buf = NULL;
4990 gboolean saw_desired_kf = stream_nr != avi->main_stream
4991 || avi->offset >= avi->seek_kf_offset;
4993 if (stream_nr == avi->main_stream && avi->offset == avi->seek_kf_offset) {
4994 GST_DEBUG_OBJECT (avi, "Desired keyframe reached");
4995 avi->seek_kf_offset = 0;
4998 if (saw_desired_kf) {
4999 gst_adapter_flush (avi->adapter, 8);
5002 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
5003 /* patch the size */
5004 gst_buffer_resize (buf, 0, size);
5009 GST_DEBUG_OBJECT (avi,
5010 "Desired keyframe not yet reached, flushing chunk");
5011 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
5015 offset = avi->offset;
5017 avi->offset += 8 + GST_ROUND_UP_2 (size);
5019 stream = &avi->stream[stream_nr];
5021 /* set delay (if any)
5022 if (stream->strh->init_frames == stream->current_frame &&
5024 stream->delay = next_ts;
5027 /* parsing of corresponding header may have failed */
5028 if (G_UNLIKELY (!stream->pad)) {
5029 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
5030 GST_FOURCC_ARGS (tag));
5032 gst_buffer_unref (buf);
5034 /* get time of this buffer */
5035 gst_pad_query_position (stream->pad, GST_FORMAT_TIME,
5036 (gint64 *) & next_ts);
5039 gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
5042 /* increment our positions */
5043 stream->current_entry++;
5044 stream->current_total += size;
5046 /* update current position in the segment */
5047 avi->segment.position = next_ts;
5049 if (saw_desired_kf && buf) {
5050 GstClockTime dur_ts = 0;
5052 /* invert the picture if needed */
5053 buf = gst_avi_demux_invert (stream, buf);
5055 gst_pad_query_position (stream->pad, GST_FORMAT_TIME,
5056 (gint64 *) & dur_ts);
5058 GST_BUFFER_DTS (buf) = next_ts;
5059 GST_BUFFER_PTS (buf) = GST_CLOCK_TIME_NONE;
5060 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
5061 if (stream->strh->type == GST_RIFF_FCC_vids) {
5062 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
5063 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
5065 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
5066 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
5069 GST_DEBUG_OBJECT (avi,
5070 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
5071 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
5072 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
5073 GST_TIME_ARGS (GST_BUFFER_DURATION (buf)),
5074 GST_BUFFER_OFFSET (buf), size, GST_PAD_NAME (stream->pad));
5076 /* mark discont when pending */
5077 if (G_UNLIKELY (stream->discont)) {
5078 GST_DEBUG_OBJECT (avi, "Setting DISCONT");
5079 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
5080 stream->discont = FALSE;
5082 res = gst_pad_push (stream->pad, buf);
5086 res = gst_avi_demux_combine_flows (avi, stream, res);
5087 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5088 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
5100 * Send pending tags.
5103 push_tag_lists (GstAviDemux * avi)
5111 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
5113 for (i = 0; i < avi->num_streams; i++) {
5114 GstAviStream *stream = &avi->stream[i];
5115 GstPad *pad = stream->pad;
5117 tags = stream->taglist;
5120 GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
5122 gst_pad_push_event (pad, gst_event_new_tag ("GstDemuxer", tags));
5123 stream->taglist = NULL;
5127 if (!(tags = avi->globaltags))
5128 tags = gst_tag_list_new_empty ();
5130 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
5131 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
5133 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
5134 gst_avi_demux_push_event (avi, gst_event_new_tag ("GstDemuxer", tags));
5135 avi->globaltags = NULL;
5136 avi->got_tags = FALSE;
5140 gst_avi_demux_loop (GstPad * pad)
5143 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5145 switch (avi->state) {
5146 case GST_AVI_DEMUX_START:
5147 res = gst_avi_demux_stream_init_pull (avi);
5148 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5149 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5152 avi->state = GST_AVI_DEMUX_HEADER;
5154 case GST_AVI_DEMUX_HEADER:
5155 res = gst_avi_demux_stream_header_pull (avi);
5156 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5157 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5160 avi->state = GST_AVI_DEMUX_MOVI;
5162 case GST_AVI_DEMUX_MOVI:
5163 if (G_UNLIKELY (avi->seg_event)) {
5164 gst_avi_demux_push_event (avi, avi->seg_event);
5165 avi->seg_event = NULL;
5167 if (G_UNLIKELY (avi->got_tags)) {
5168 push_tag_lists (avi);
5170 /* process each index entry in turn */
5171 res = gst_avi_demux_loop_data (avi);
5173 /* pause when error */
5174 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5175 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
5180 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
5181 res = GST_FLOW_ERROR;
5190 gboolean push_eos = FALSE;
5191 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
5192 gst_pad_pause_task (avi->sinkpad);
5194 if (res == GST_FLOW_EOS) {
5195 /* handle end-of-stream/segment */
5196 /* so align our position with the end of it, if there is one
5197 * this ensures a subsequent will arrive at correct base/acc time */
5198 if (avi->segment.rate > 0.0 &&
5199 GST_CLOCK_TIME_IS_VALID (avi->segment.stop))
5200 avi->segment.position = avi->segment.stop;
5201 else if (avi->segment.rate < 0.0)
5202 avi->segment.position = avi->segment.start;
5203 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
5206 if ((stop = avi->segment.stop) == -1)
5207 stop = avi->segment.duration;
5209 GST_INFO_OBJECT (avi, "sending segment_done");
5211 gst_element_post_message
5212 (GST_ELEMENT_CAST (avi),
5213 gst_message_new_segment_done (GST_OBJECT_CAST (avi),
5214 GST_FORMAT_TIME, stop));
5218 } else if (res == GST_FLOW_NOT_LINKED || res < GST_FLOW_EOS) {
5219 /* for fatal errors we post an error message, wrong-state is
5220 * not fatal because it happens due to flushes and only means
5221 * that we should stop now. */
5222 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
5223 (_("Internal data stream error.")),
5224 ("streaming stopped, reason %s", gst_flow_get_name (res)));
5228 GST_INFO_OBJECT (avi, "sending eos");
5229 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
5230 (res == GST_FLOW_EOS)) {
5231 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
5232 (NULL), ("got eos but no streams (yet)"));
5239 static GstFlowReturn
5240 gst_avi_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
5243 GstAviDemux *avi = GST_AVI_DEMUX (parent);
5246 if (GST_BUFFER_IS_DISCONT (buf)) {
5247 GST_DEBUG_OBJECT (avi, "got DISCONT");
5248 gst_adapter_clear (avi->adapter);
5249 /* mark all streams DISCONT */
5250 for (i = 0; i < avi->num_streams; i++)
5251 avi->stream[i].discont = TRUE;
5254 GST_DEBUG ("Store %" G_GSIZE_FORMAT " bytes in adapter",
5255 gst_buffer_get_size (buf));
5256 gst_adapter_push (avi->adapter, buf);
5258 switch (avi->state) {
5259 case GST_AVI_DEMUX_START:
5260 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
5261 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5265 case GST_AVI_DEMUX_HEADER:
5266 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
5267 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5271 case GST_AVI_DEMUX_MOVI:
5272 if (G_UNLIKELY (avi->seg_event)) {
5273 gst_avi_demux_push_event (avi, avi->seg_event);
5274 avi->seg_event = NULL;
5276 if (G_UNLIKELY (avi->got_tags)) {
5277 push_tag_lists (avi);
5279 res = gst_avi_demux_stream_data (avi);
5281 case GST_AVI_DEMUX_SEEK:
5287 /* obtain and parse indexes */
5288 if (avi->stream[0].indexes && !gst_avi_demux_read_subindexes_push (avi))
5289 /* seek in subindex read function failed */
5292 if (!avi->stream[0].indexes && !avi->have_index
5293 && avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
5294 gst_avi_demux_stream_index_push (avi);
5296 if (avi->have_index) {
5297 /* use the indexes now to construct nice durations */
5298 gst_avi_demux_calculate_durations_from_index (avi);
5300 /* still parsing indexes */
5304 GST_OBJECT_LOCK (avi);
5305 event = avi->seek_event;
5306 avi->seek_event = NULL;
5307 GST_OBJECT_UNLOCK (avi);
5309 /* calculate and perform seek */
5310 if (!avi_demux_handle_seek_push (avi, avi->sinkpad, event))
5313 gst_event_unref (event);
5314 avi->state = GST_AVI_DEMUX_MOVI;
5318 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
5319 ("Illegal internal state"));
5320 res = GST_FLOW_ERROR;
5324 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
5325 gst_flow_get_name (res));
5327 if (G_UNLIKELY (avi->abort_buffering))
5328 goto abort_buffering;
5335 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("failed to read indexes"));
5336 return GST_FLOW_ERROR;
5340 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("push mode seek failed"));
5341 return GST_FLOW_ERROR;
5345 avi->abort_buffering = FALSE;
5346 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
5347 return GST_FLOW_ERROR;
5352 gst_avi_demux_sink_activate (GstPad * sinkpad, GstObject * parent)
5357 query = gst_query_new_scheduling ();
5359 if (!gst_pad_peer_query (sinkpad, query)) {
5360 gst_query_unref (query);
5364 pull_mode = gst_query_has_scheduling_mode (query, GST_PAD_MODE_PULL);
5365 gst_query_unref (query);
5370 GST_DEBUG_OBJECT (sinkpad, "activating pull");
5371 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
5375 GST_DEBUG_OBJECT (sinkpad, "activating push");
5376 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
5381 gst_avi_demux_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
5382 GstPadMode mode, gboolean active)
5385 GstAviDemux *avi = GST_AVI_DEMUX (parent);
5388 case GST_PAD_MODE_PULL:
5390 avi->streaming = FALSE;
5391 res = gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
5394 res = gst_pad_stop_task (sinkpad);
5397 case GST_PAD_MODE_PUSH:
5399 GST_DEBUG ("avi: activating push/chain function");
5400 avi->streaming = TRUE;
5402 GST_DEBUG ("avi: deactivating push/chain function");
5415 gst_avi_demux_set_index (GstElement * element, GstIndex * index)
5417 GstAviDemux *avi = GST_AVI_DEMUX (element);
5419 GST_OBJECT_LOCK (avi);
5420 if (avi->element_index)
5421 gst_object_unref (avi->element_index);
5423 avi->element_index = gst_object_ref (index);
5425 avi->element_index = NULL;
5427 GST_OBJECT_UNLOCK (avi);
5428 /* object lock might be taken again */
5430 gst_index_get_writer_id (index, GST_OBJECT_CAST (element), &avi->index_id);
5431 GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
5435 gst_avi_demux_get_index (GstElement * element)
5437 GstIndex *result = NULL;
5438 GstAviDemux *avi = GST_AVI_DEMUX (element);
5440 GST_OBJECT_LOCK (avi);
5441 if (avi->element_index)
5442 result = gst_object_ref (avi->element_index);
5443 GST_OBJECT_UNLOCK (avi);
5445 GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
5451 static GstStateChangeReturn
5452 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
5454 GstStateChangeReturn ret;
5455 GstAviDemux *avi = GST_AVI_DEMUX (element);
5457 switch (transition) {
5458 case GST_STATE_CHANGE_READY_TO_PAUSED:
5459 avi->streaming = FALSE;
5460 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
5466 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
5467 if (ret == GST_STATE_CHANGE_FAILURE)
5470 switch (transition) {
5471 case GST_STATE_CHANGE_PAUSED_TO_READY:
5472 avi->have_index = FALSE;
5473 gst_avi_demux_reset (avi);