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 static void gst_avi_demux_base_init (GstAviDemuxClass * klass);
76 static void gst_avi_demux_class_init (GstAviDemuxClass * klass);
77 static void gst_avi_demux_init (GstAviDemux * avi);
78 static void gst_avi_demux_finalize (GObject * object);
80 static void gst_avi_demux_reset (GstAviDemux * avi);
83 static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
85 static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event);
86 static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
88 static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
91 static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
93 static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad);
94 static gboolean gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query);
95 static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
96 gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
98 static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
99 static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
101 static gboolean gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
103 static void gst_avi_demux_loop (GstPad * pad);
104 static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad);
105 static gboolean gst_avi_demux_sink_activate_pull (GstPad * sinkpad,
107 static gboolean gst_avi_demux_activate_push (GstPad * pad, gboolean active);
108 static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstBuffer * buf);
110 static void gst_avi_demux_set_index (GstElement * element, GstIndex * index);
111 static GstIndex *gst_avi_demux_get_index (GstElement * element);
112 static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
113 GstStateChange transition);
114 static void gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi);
115 static void gst_avi_demux_get_buffer_info (GstAviDemux * avi,
116 GstAviStream * stream, guint entry_n, GstClockTime * timestamp,
117 GstClockTime * ts_end, guint64 * offset, guint64 * offset_end);
119 static void gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf);
121 static GstElementClass *parent_class = NULL;
123 /* GObject methods */
126 gst_avi_demux_get_type (void)
128 static GType avi_demux_type = 0;
130 if (!avi_demux_type) {
131 static const GTypeInfo avi_demux_info = {
132 sizeof (GstAviDemuxClass),
133 (GBaseInitFunc) gst_avi_demux_base_init,
135 (GClassInitFunc) gst_avi_demux_class_init,
138 sizeof (GstAviDemux),
140 (GInstanceInitFunc) gst_avi_demux_init,
144 g_type_register_static (GST_TYPE_ELEMENT,
145 "GstAviDemux", &avi_demux_info, 0);
148 return avi_demux_type;
152 gst_avi_demux_base_init (GstAviDemuxClass * klass)
154 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
155 GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl;
156 GstCaps *audcaps, *vidcaps, *subcaps;
158 audcaps = gst_riff_create_audio_template_caps ();
159 gst_caps_append (audcaps, gst_caps_new_simple ("audio/x-avi-unknown", NULL));
160 audiosrctempl = gst_pad_template_new ("audio_%02d",
161 GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
163 vidcaps = gst_riff_create_video_template_caps ();
164 gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
165 gst_caps_append (vidcaps, gst_caps_new_simple ("video/x-avi-unknown", NULL));
166 videosrctempl = gst_pad_template_new ("video_%02d",
167 GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
169 subcaps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
170 subsrctempl = gst_pad_template_new ("subtitle_%02d",
171 GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
172 gst_element_class_add_pad_template (element_class, audiosrctempl);
173 gst_element_class_add_pad_template (element_class, videosrctempl);
174 gst_element_class_add_pad_template (element_class, subsrctempl);
175 gst_element_class_add_pad_template (element_class,
176 gst_static_pad_template_get (&sink_templ));
177 gst_element_class_set_details_simple (element_class, "Avi demuxer",
179 "Demultiplex an avi file into audio and video",
180 "Erik Walthinsen <omega@cse.ogi.edu>, "
181 "Wim Taymans <wim.taymans@chello.be>, "
182 "Thijs Vermeir <thijsvermeir@gmail.com>");
186 gst_avi_demux_class_init (GstAviDemuxClass * klass)
188 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
189 GObjectClass *gobject_class = (GObjectClass *) klass;
191 GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
192 0, "Demuxer for AVI streams");
194 parent_class = g_type_class_peek_parent (klass);
196 gobject_class->finalize = gst_avi_demux_finalize;
197 gstelement_class->change_state =
198 GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
200 gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_avi_demux_set_index);
201 gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_avi_demux_get_index);
205 gst_avi_demux_init (GstAviDemux * avi)
207 avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
208 gst_pad_set_activate_function (avi->sinkpad,
209 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
210 gst_pad_set_activatepull_function (avi->sinkpad,
211 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_pull));
212 gst_pad_set_activatepush_function (avi->sinkpad,
213 GST_DEBUG_FUNCPTR (gst_avi_demux_activate_push));
214 gst_pad_set_chain_function (avi->sinkpad,
215 GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
216 gst_pad_set_event_function (avi->sinkpad,
217 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
218 gst_element_add_pad (GST_ELEMENT_CAST (avi), avi->sinkpad);
220 avi->adapter = gst_adapter_new ();
222 gst_avi_demux_reset (avi);
226 gst_avi_demux_finalize (GObject * object)
228 GstAviDemux *avi = GST_AVI_DEMUX (object);
230 GST_DEBUG ("AVI: finalize");
232 g_object_unref (avi->adapter);
234 G_OBJECT_CLASS (parent_class)->finalize (object);
238 gst_avi_demux_reset_stream (GstAviDemux * avi, GstAviStream * stream)
240 g_free (stream->strh);
241 g_free (stream->strf.data);
242 g_free (stream->name);
243 g_free (stream->index);
244 g_free (stream->indexes);
245 if (stream->initdata)
246 gst_buffer_unref (stream->initdata);
247 if (stream->extradata)
248 gst_buffer_unref (stream->extradata);
250 if (stream->exposed) {
251 gst_pad_set_active (stream->pad, FALSE);
252 gst_element_remove_pad (GST_ELEMENT_CAST (avi), stream->pad);
254 gst_object_unref (stream->pad);
256 if (stream->taglist) {
257 gst_tag_list_free (stream->taglist);
258 stream->taglist = NULL;
260 memset (stream, 0, sizeof (GstAviStream));
264 gst_avi_demux_reset (GstAviDemux * avi)
268 GST_DEBUG ("AVI: reset");
270 for (i = 0; i < avi->num_streams; i++)
271 gst_avi_demux_reset_stream (avi, &avi->stream[i]);
273 avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
274 avi->num_streams = 0;
275 avi->num_v_streams = 0;
276 avi->num_a_streams = 0;
277 avi->num_t_streams = 0;
278 avi->main_stream = -1;
280 avi->state = GST_AVI_DEMUX_START;
282 avi->building_index = FALSE;
284 avi->index_offset = 0;
288 if (avi->element_index)
289 gst_object_unref (avi->element_index);
290 avi->element_index = NULL;
292 if (avi->close_seg_event) {
293 gst_event_unref (avi->close_seg_event);
294 avi->close_seg_event = NULL;
296 if (avi->seg_event) {
297 gst_event_unref (avi->seg_event);
298 avi->seg_event = NULL;
300 if (avi->seek_event) {
301 gst_event_unref (avi->seek_event);
302 avi->seek_event = NULL;
306 gst_tag_list_free (avi->globaltags);
307 avi->globaltags = NULL;
309 avi->got_tags = TRUE; /* we always want to push global tags */
310 avi->have_eos = FALSE;
311 avi->seekable = TRUE;
313 gst_adapter_clear (avi->adapter);
315 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
319 /* GstElement methods */
322 static const GstFormat *
323 gst_avi_demux_get_src_formats (GstPad * pad)
325 GstAviStream *stream = gst_pad_get_element_private (pad);
327 static const GstFormat src_a_formats[] = {
333 static const GstFormat src_v_formats[] = {
339 return (stream->strh->type == GST_RIFF_FCC_auds ?
340 src_a_formats : src_v_formats);
344 /* assumes stream->strf.auds->av_bps != 0 */
345 static inline GstClockTime
346 avi_stream_convert_bytes_to_time_unchecked (GstAviStream * stream,
349 return gst_util_uint64_scale_int (bytes, GST_SECOND,
350 stream->strf.auds->av_bps);
353 static inline guint64
354 avi_stream_convert_time_to_bytes_unchecked (GstAviStream * stream,
357 return gst_util_uint64_scale_int (time, stream->strf.auds->av_bps,
361 /* assumes stream->strh->rate != 0 */
362 static inline GstClockTime
363 avi_stream_convert_frames_to_time_unchecked (GstAviStream * stream,
366 return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
370 static inline guint64
371 avi_stream_convert_time_to_frames_unchecked (GstAviStream * stream,
374 return gst_util_uint64_scale (time, stream->strh->rate,
375 stream->strh->scale * GST_SECOND);
379 gst_avi_demux_src_convert (GstPad * pad,
380 GstFormat src_format,
381 gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
383 GstAviStream *stream = gst_pad_get_element_private (pad);
387 "Received src_format:%s, src_value:%" G_GUINT64_FORMAT
388 ", dest_format:%s", gst_format_get_name (src_format), src_value,
389 gst_format_get_name (*dest_format));
391 if (G_UNLIKELY (src_format == *dest_format)) {
392 *dest_value = src_value;
395 if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
399 if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
400 (src_format == GST_FORMAT_BYTES
401 || *dest_format == GST_FORMAT_BYTES))) {
406 switch (src_format) {
407 case GST_FORMAT_TIME:
408 switch (*dest_format) {
409 case GST_FORMAT_BYTES:
410 *dest_value = gst_util_uint64_scale_int (src_value,
411 stream->strf.auds->av_bps, GST_SECOND);
413 case GST_FORMAT_DEFAULT:
415 gst_util_uint64_scale_round (src_value, stream->strh->rate,
416 stream->strh->scale * GST_SECOND);
423 case GST_FORMAT_BYTES:
424 switch (*dest_format) {
425 case GST_FORMAT_TIME:
426 if (stream->strf.auds->av_bps != 0) {
427 *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
437 case GST_FORMAT_DEFAULT:
438 switch (*dest_format) {
439 case GST_FORMAT_TIME:
441 avi_stream_convert_frames_to_time_unchecked (stream, src_value);
454 "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
455 gst_format_get_name (*dest_format), *dest_value);
459 static const GstQueryType *
460 gst_avi_demux_get_src_query_types (GstPad * pad)
462 static const GstQueryType src_types[] = {
474 gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query)
477 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
479 GstAviStream *stream = gst_pad_get_element_private (pad);
481 if (!stream->strh || !stream->strf.data)
482 return gst_pad_query_default (pad, query);
484 switch (GST_QUERY_TYPE (query)) {
485 case GST_QUERY_POSITION:{
488 GST_DEBUG ("pos query for stream %u: frames %u, bytes %u",
489 stream->num, stream->current_entry, stream->current_total);
491 /* FIXME, this looks clumsy */
492 if (stream->strh->type == GST_RIFF_FCC_auds) {
493 if (stream->is_vbr) {
495 pos = gst_util_uint64_scale ((gint64) stream->current_entry *
496 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
497 GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
498 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
499 } else if (stream->strf.auds->av_bps != 0) {
501 pos = gst_util_uint64_scale (stream->current_total, GST_SECOND,
502 (guint64) stream->strf.auds->av_bps);
503 GST_DEBUG_OBJECT (avi,
504 "CBR convert bytes %u, time %" GST_TIME_FORMAT,
505 stream->current_total, GST_TIME_ARGS (pos));
506 } else if (stream->idx_n != 0 && stream->total_bytes != 0) {
507 /* calculate timestamps based on percentage of length */
508 guint64 xlen = avi->avih->us_frame *
509 avi->avih->tot_frames * GST_USECOND;
511 if (stream->is_vbr) {
512 pos = gst_util_uint64_scale (xlen, stream->current_entry,
514 GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
515 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
517 pos = gst_util_uint64_scale (xlen, stream->current_total,
518 stream->total_bytes);
519 GST_DEBUG_OBJECT (avi,
520 "CBR perc convert bytes %u, time %" GST_TIME_FORMAT,
521 stream->current_total, GST_TIME_ARGS (pos));
528 if (stream->strh->rate != 0) {
529 pos = gst_util_uint64_scale ((guint64) stream->current_entry *
530 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
532 pos = stream->current_entry * avi->avih->us_frame * GST_USECOND;
536 GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
537 gst_query_set_position (query, GST_FORMAT_TIME, pos);
539 GST_WARNING ("pos query failed");
542 case GST_QUERY_DURATION:
545 GstClockTime duration;
547 /* only act on audio or video streams */
548 if (stream->strh->type != GST_RIFF_FCC_auds &&
549 stream->strh->type != GST_RIFF_FCC_vids) {
554 /* take stream duration, fall back to avih duration */
555 if ((duration = stream->duration) == -1)
556 duration = avi->duration;
558 gst_query_parse_duration (query, &fmt, NULL);
561 case GST_FORMAT_TIME:
562 gst_query_set_duration (query, fmt, duration);
564 case GST_FORMAT_DEFAULT:
567 GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
570 if (stream->idx_n >= 0)
571 gst_query_set_duration (query, fmt, stream->idx_n);
572 else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
573 duration, &fmt, &dur))
574 gst_query_set_duration (query, fmt, dur);
583 case GST_QUERY_SEEKING:{
586 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
587 if (fmt == GST_FORMAT_TIME) {
588 gboolean seekable = TRUE;
590 if (avi->streaming) {
591 seekable = avi->seekable;
594 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
595 0, stream->duration);
600 case GST_QUERY_CONVERT:{
601 GstFormat src_fmt, dest_fmt;
602 gint64 src_val, dest_val;
604 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
605 if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
607 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
609 res = gst_pad_query_default (pad, query);
613 res = gst_pad_query_default (pad, query);
617 gst_object_unref (avi);
622 static const GstEventMask *
623 gst_avi_demux_get_event_mask (GstPad * pad)
625 static const GstEventMask masks[] = {
626 {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
635 gst_avi_demux_seek_streams (GstAviDemux * avi, guint64 offset, gboolean before)
637 GstAviStream *stream;
638 GstIndexEntry *entry;
640 gint64 val, min = offset;
642 for (i = 0; i < avi->num_streams; i++) {
643 stream = &avi->stream[i];
645 entry = gst_index_get_assoc_entry (avi->element_index, stream->index_id,
646 before ? GST_INDEX_LOOKUP_BEFORE : GST_INDEX_LOOKUP_AFTER,
647 GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_BYTES, offset);
651 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
652 GST_DEBUG_OBJECT (avi, "stream %d, previous entry at %"
653 G_GUINT64_FORMAT, i, val);
661 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
662 stream->current_entry = 0;
663 stream->current_total = 0;
667 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
668 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT,
671 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &val);
672 stream->current_total = val;
673 gst_index_entry_assoc_map (entry, GST_FORMAT_DEFAULT, &val);
674 stream->current_entry = val;
681 gst_avi_demux_index_entry_offset_search (GstAviIndexEntry * entry,
684 if (entry->offset < *offset)
686 else if (entry->offset > *offset)
692 gst_avi_demux_seek_streams_index (GstAviDemux * avi, guint64 offset,
695 GstAviStream *stream;
696 GstAviIndexEntry *entry;
698 gint64 val, min = offset;
701 for (i = 0; i < avi->num_streams; i++) {
702 stream = &avi->stream[i];
704 /* compensate for chunk header */
707 gst_util_array_binary_search (stream->index, stream->idx_n,
708 sizeof (GstAviIndexEntry),
709 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
710 before ? GST_SEARCH_MODE_BEFORE : GST_SEARCH_MODE_AFTER, &offset, NULL);
714 index = entry - stream->index;
718 val = stream->index[index].offset;
719 GST_DEBUG_OBJECT (avi,
720 "stream %d, previous entry at %" G_GUINT64_FORMAT, i, val);
728 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
729 stream->current_entry = 0;
730 stream->current_total = 0;
734 val = stream->index[index].offset - 8;
735 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT, i,
738 stream->current_total = stream->index[index].total;
739 stream->current_entry = index;
745 #define GST_AVI_SEEK_PUSH_DISPLACE (4 * GST_SECOND)
748 gst_avi_demux_handle_sink_event (GstPad * pad, GstEvent * event)
751 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
753 GST_DEBUG_OBJECT (avi,
754 "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
756 switch (GST_EVENT_TYPE (event)) {
757 case GST_EVENT_NEWSEGMENT:
761 gint64 start, stop, time, offset = 0;
765 /* some debug output */
766 gst_segment_init (&segment, GST_FORMAT_UNDEFINED);
767 gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
768 &start, &stop, &time);
769 gst_segment_set_newsegment_full (&segment, update, rate, arate, format,
771 GST_DEBUG_OBJECT (avi,
772 "received format %d newsegment %" GST_SEGMENT_FORMAT, format,
775 /* chain will send initial newsegment after pads have been added */
776 if (avi->state != GST_AVI_DEMUX_MOVI) {
777 GST_DEBUG_OBJECT (avi, "still starting, eating event");
781 /* we only expect a BYTE segment, e.g. following a seek */
782 if (format != GST_FORMAT_BYTES) {
783 GST_DEBUG_OBJECT (avi, "unsupported segment format, ignoring");
787 if (avi->have_index) {
788 GstAviIndexEntry *entry;
789 guint i = 0, index = 0, k = 0;
790 GstAviStream *stream;
792 /* compensate chunk header, stored index offset points after header */
794 /* find which stream we're on */
796 stream = &avi->stream[i];
798 /* find the index for start bytes offset */
799 entry = gst_util_array_binary_search (stream->index,
800 stream->idx_n, sizeof (GstAviIndexEntry),
801 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
802 GST_SEARCH_MODE_AFTER, &start, NULL);
806 index = entry - stream->index;
808 /* we are on the stream with a chunk start offset closest to start */
809 if (!offset || stream->index[index].offset < offset) {
810 offset = stream->index[index].offset;
813 /* exact match needs no further searching */
814 if (stream->index[index].offset == start)
816 } while (++i < avi->num_streams);
819 stream = &avi->stream[k];
821 /* so we have no idea what is to come, or where we are */
823 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
827 /* get the ts corresponding to start offset bytes for the stream */
828 gst_avi_demux_get_buffer_info (avi, stream, index,
829 (GstClockTime *) & time, NULL, NULL, NULL);
830 } else if (avi->element_index) {
831 GstIndexEntry *entry;
833 /* Let's check if we have an index entry for this position */
834 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
835 GST_INDEX_LOOKUP_AFTER, GST_ASSOCIATION_FLAG_NONE,
836 GST_FORMAT_BYTES, start);
838 /* we can not go where we have not yet been before ... */
840 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
844 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time);
845 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &offset);
847 GST_WARNING_OBJECT (avi, "no index data, forcing EOS");
851 stop = GST_CLOCK_TIME_NONE;
853 /* set up segment and send downstream */
854 gst_segment_set_newsegment_full (&avi->segment, update, rate, arate,
855 GST_FORMAT_TIME, time, stop, time);
856 GST_DEBUG_OBJECT (avi, "Pushing newseg update %d, rate %g, "
857 "applied rate %g, format %d, start %" G_GINT64_FORMAT ", "
858 "stop %" G_GINT64_FORMAT, update, rate, arate, GST_FORMAT_TIME,
860 gst_avi_demux_push_event (avi,
861 gst_event_new_new_segment_full (update, rate, arate, GST_FORMAT_TIME,
864 GST_DEBUG_OBJECT (avi, "next chunk expected at %" G_GINT64_FORMAT, start);
866 /* adjust state for streaming thread accordingly */
868 gst_avi_demux_seek_streams_index (avi, offset, FALSE);
870 gst_avi_demux_seek_streams (avi, offset, FALSE);
872 /* set up streaming thread */
873 g_assert (offset >= start);
875 avi->todrop = offset - start;
878 gst_event_unref (event);
883 avi->have_eos = TRUE;
888 if (avi->state != GST_AVI_DEMUX_MOVI) {
889 gst_event_unref (event);
890 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
891 (NULL), ("got eos and didn't receive a complete header object"));
892 } else if (!gst_avi_demux_push_event (avi, event)) {
893 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
894 (NULL), ("got eos but no streams (yet)"));
898 case GST_EVENT_FLUSH_STOP:
902 gst_adapter_clear (avi->adapter);
903 avi->have_eos = FALSE;
904 for (i = 0; i < avi->num_streams; i++) {
905 avi->stream[i].last_flow = GST_FLOW_OK;
906 avi->stream[i].discont = TRUE;
908 /* fall through to default case so that the event gets passed downstream */
911 res = gst_pad_event_default (pad, event);
915 gst_object_unref (avi);
921 gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
924 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
926 GST_DEBUG_OBJECT (avi,
927 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
929 switch (GST_EVENT_TYPE (event)) {
931 if (!avi->streaming) {
932 res = gst_avi_demux_handle_seek (avi, pad, event);
934 res = gst_avi_demux_handle_seek_push (avi, pad, event);
936 gst_event_unref (event);
939 case GST_EVENT_NAVIGATION:
941 gst_event_unref (event);
944 res = gst_pad_event_default (pad, event);
948 gst_object_unref (avi);
953 /* streaming helper (push) */
956 * gst_avi_demux_peek_chunk_info:
958 * @tag: holder for tag
959 * @size: holder for tag size
961 * Peek next chunk info (tag and size)
963 * Returns: TRUE when one chunk info has been got
966 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
968 const guint8 *data = NULL;
970 if (gst_adapter_available (avi->adapter) < 8)
973 data = gst_adapter_peek (avi->adapter, 8);
974 *tag = GST_READ_UINT32_LE (data);
975 *size = GST_READ_UINT32_LE (data + 4);
981 * gst_avi_demux_peek_chunk:
983 * @tag: holder for tag
984 * @size: holder for tag size
986 * Peek enough data for one full chunk
988 * Returns: %TRUE when one chunk has been got
991 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
993 guint32 peek_size = 0;
996 if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
999 /* size 0 -> empty data buffer would surprise most callers,
1000 * large size -> do not bother trying to squeeze that into adapter,
1001 * so we throw poor man's exception, which can be caught if caller really
1002 * wants to handle 0 size chunk */
1003 if (!(*size) || (*size) >= (1 << 30))
1006 peek_size = (*size + 1) & ~1;
1007 available = gst_adapter_available (avi->adapter);
1009 GST_DEBUG_OBJECT (avi,
1010 "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
1011 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
1013 if (available < (8 + peek_size))
1021 GST_INFO_OBJECT (avi, "Failed to peek");
1026 GST_INFO_OBJECT (avi,
1027 "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
1028 GST_FOURCC_ARGS (*tag));
1029 /* chain should give up */
1030 avi->abort_buffering = TRUE;
1035 GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
1036 available, 8 + peek_size);
1044 * gst_avi_demux_parse_file_header:
1045 * @element: caller element (used for errors/debug).
1046 * @buf: input data to be used for parsing.
1048 * "Open" a RIFF/AVI file. The buffer should be at least 12
1049 * bytes long. Takes ownership of @buf.
1051 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
1052 * Throws an error, caller should error out (fatal).
1055 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
1060 stamp = gst_util_get_timestamp ();
1062 /* riff_parse posts an error */
1063 if (!gst_riff_parse_file_header (element, buf, &doctype))
1066 if (doctype != GST_RIFF_RIFF_AVI)
1069 stamp = gst_util_get_timestamp () - stamp;
1070 GST_DEBUG_OBJECT (element, "header parsing took %" GST_TIME_FORMAT,
1071 GST_TIME_ARGS (stamp));
1078 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
1079 ("File is not an AVI file: %" GST_FOURCC_FORMAT,
1080 GST_FOURCC_ARGS (doctype)));
1086 * Read AVI file tag when streaming
1088 static GstFlowReturn
1089 gst_avi_demux_stream_init_push (GstAviDemux * avi)
1091 if (gst_adapter_available (avi->adapter) >= 12) {
1094 tmp = gst_adapter_take_buffer (avi->adapter, 12);
1096 GST_DEBUG ("Parsing avi header");
1097 if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), tmp)) {
1098 return GST_FLOW_ERROR;
1100 GST_DEBUG ("header ok");
1103 avi->state = GST_AVI_DEMUX_HEADER;
1111 static GstFlowReturn
1112 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
1115 GstBuffer *buf = NULL;
1117 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
1118 if (res != GST_FLOW_OK)
1120 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
1130 GST_DEBUG_OBJECT (avi, "error parsing file header");
1131 return GST_FLOW_ERROR;
1135 /* AVI header handling */
1137 * gst_avi_demux_parse_avih:
1138 * @avi: caller element (used for errors/debug).
1139 * @buf: input data to be used for parsing.
1140 * @avih: pointer to structure (filled in by function) containing
1141 * stream information (such as flags, number of streams, etc.).
1143 * Read 'avih' header. Discards buffer after use.
1145 * Returns: TRUE on success, FALSE otherwise. Throws an error if
1146 * the header is invalid. The caller should error out
1150 gst_avi_demux_parse_avih (GstAviDemux * avi,
1151 GstBuffer * buf, gst_riff_avih ** _avih)
1153 gst_riff_avih *avih;
1158 if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
1159 goto avih_too_small;
1161 avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1163 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1164 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
1165 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
1166 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
1167 avih->flags = GUINT32_FROM_LE (avih->flags);
1168 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
1169 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
1170 avih->streams = GUINT32_FROM_LE (avih->streams);
1171 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
1172 avih->width = GUINT32_FROM_LE (avih->width);
1173 avih->height = GUINT32_FROM_LE (avih->height);
1174 avih->scale = GUINT32_FROM_LE (avih->scale);
1175 avih->rate = GUINT32_FROM_LE (avih->rate);
1176 avih->start = GUINT32_FROM_LE (avih->start);
1177 avih->length = GUINT32_FROM_LE (avih->length);
1181 GST_INFO_OBJECT (avi, "avih tag found:");
1182 GST_INFO_OBJECT (avi, " us_frame %u", avih->us_frame);
1183 GST_INFO_OBJECT (avi, " max_bps %u", avih->max_bps);
1184 GST_INFO_OBJECT (avi, " pad_gran %u", avih->pad_gran);
1185 GST_INFO_OBJECT (avi, " flags 0x%08x", avih->flags);
1186 GST_INFO_OBJECT (avi, " tot_frames %u", avih->tot_frames);
1187 GST_INFO_OBJECT (avi, " init_frames %u", avih->init_frames);
1188 GST_INFO_OBJECT (avi, " streams %u", avih->streams);
1189 GST_INFO_OBJECT (avi, " bufsize %u", avih->bufsize);
1190 GST_INFO_OBJECT (avi, " width %u", avih->width);
1191 GST_INFO_OBJECT (avi, " height %u", avih->height);
1192 GST_INFO_OBJECT (avi, " scale %u", avih->scale);
1193 GST_INFO_OBJECT (avi, " rate %u", avih->rate);
1194 GST_INFO_OBJECT (avi, " start %u", avih->start);
1195 GST_INFO_OBJECT (avi, " length %u", avih->length);
1198 gst_buffer_unref (buf);
1200 if (avih->us_frame != 0 && avih->tot_frames != 0)
1202 (guint64) avih->us_frame * (guint64) avih->tot_frames * 1000;
1204 avi->duration = GST_CLOCK_TIME_NONE;
1206 GST_INFO_OBJECT (avi, " header duration %" GST_TIME_FORMAT,
1207 GST_TIME_ARGS (avi->duration));
1214 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No buffer"));
1219 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
1220 ("Too small avih (%d available, %d needed)",
1221 GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
1222 gst_buffer_unref (buf);
1228 * gst_avi_demux_parse_superindex:
1229 * @avi: caller element (used for debugging/errors).
1230 * @buf: input data to use for parsing.
1231 * @locations: locations in the file (byte-offsets) that contain
1232 * the actual indexes (see get_avi_demux_parse_subindex()).
1233 * The array ends with GST_BUFFER_OFFSET_NONE.
1235 * Reads superindex (openDML-2 spec stuff) from the provided data.
1237 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
1238 * on error, but they are not fatal.
1241 gst_avi_demux_parse_superindex (GstAviDemux * avi,
1242 GstBuffer * buf, guint64 ** _indexes)
1252 size = buf ? GST_BUFFER_SIZE (buf) : 0;
1256 data = GST_BUFFER_DATA (buf);
1258 /* check type of index. The opendml2 specs state that
1259 * there should be 4 dwords per array entry. Type can be
1260 * either frame or field (and we don't care). */
1261 if (GST_READ_UINT16_LE (data) != 4 ||
1262 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
1263 GST_WARNING_OBJECT (avi,
1264 "Superindex for stream has unexpected "
1265 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1266 GST_READ_UINT16_LE (data), data[2], data[3]);
1267 bpe = GST_READ_UINT16_LE (data) * 4;
1269 num = GST_READ_UINT32_LE (&data[4]);
1271 GST_DEBUG_OBJECT (avi, "got %d indexes", num);
1273 /* this can't work out well ... */
1274 if (num > G_MAXUINT32 >> 1 || bpe < 8) {
1275 goto invalid_params;
1278 indexes = g_new (guint64, num + 1);
1279 for (i = 0; i < num; i++) {
1280 if (size < 24 + bpe * (i + 1))
1282 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1283 GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
1285 indexes[i] = GST_BUFFER_OFFSET_NONE;
1286 *_indexes = indexes;
1288 gst_buffer_unref (buf);
1295 GST_ERROR_OBJECT (avi,
1296 "Not enough data to parse superindex (%d available, 24 needed)", size);
1298 gst_buffer_unref (buf);
1303 GST_ERROR_OBJECT (avi, "invalid index parameters (num = %d, bpe = %d)",
1306 gst_buffer_unref (buf);
1311 /* add an entry to the index of a stream. @num should be an estimate of the
1312 * total amount of index entries for all streams and is used to dynamically
1313 * allocate memory for the index entries. */
1314 static inline gboolean
1315 gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
1316 guint num, GstAviIndexEntry * entry)
1318 /* ensure index memory */
1319 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
1320 guint idx_max = stream->idx_max;
1321 GstAviIndexEntry *new_idx;
1323 /* we need to make some more room */
1325 /* initial size guess, assume each stream has an equal amount of entries,
1326 * overshoot with at least 8K */
1327 idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
1329 idx_max += 8192 / sizeof (GstAviIndexEntry);
1330 GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
1331 stream->idx_max, idx_max);
1333 new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
1334 /* out of memory, if this fails stream->index is untouched. */
1335 if (G_UNLIKELY (!new_idx))
1338 stream->index = new_idx;
1339 stream->idx_max = idx_max;
1342 /* update entry total and stream stats. The entry total can be converted to
1343 * the timestamp of the entry easily. */
1344 if (stream->strh->type == GST_RIFF_FCC_auds) {
1347 if (stream->is_vbr) {
1348 entry->total = stream->total_blocks;
1350 entry->total = stream->total_bytes;
1352 blockalign = stream->strf.auds->blockalign;
1354 stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
1356 stream->total_blocks++;
1358 if (stream->is_vbr) {
1359 entry->total = stream->idx_n;
1361 entry->total = stream->total_bytes;
1364 stream->total_bytes += entry->size;
1365 if (ENTRY_IS_KEYFRAME (entry))
1366 stream->n_keyframes++;
1369 GST_LOG_OBJECT (avi,
1370 "Adding stream %u, index entry %d, kf %d, size %u "
1371 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
1372 stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
1374 stream->index[stream->idx_n++] = *entry;
1379 /* given @entry_n in @stream, calculate info such as timestamps and
1380 * offsets for the entry. */
1382 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1383 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1384 guint64 * offset, guint64 * offset_end)
1386 GstAviIndexEntry *entry;
1388 entry = &stream->index[entry_n];
1390 if (stream->is_vbr) {
1391 /* VBR stream next timestamp */
1392 if (stream->strh->type == GST_RIFF_FCC_auds) {
1395 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
1397 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1402 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
1404 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1407 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
1408 /* constant rate stream */
1411 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
1413 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
1414 entry->total + entry->size);
1416 if (stream->strh->type == GST_RIFF_FCC_vids) {
1417 /* video offsets are the frame number */
1421 *offset_end = entry_n + 1;
1423 /* no offsets for audio */
1431 /* collect and debug stats about the indexes for all streams.
1432 * This method is also responsible for filling in the stream duration
1433 * as measured by the amount of index entries.
1435 * Returns TRUE if the index is not empty, else FALSE */
1437 gst_avi_demux_do_index_stats (GstAviDemux * avi)
1439 guint total_idx = 0;
1441 #ifndef GST_DISABLE_GST_DEBUG
1442 guint total_max = 0;
1445 /* get stream stats now */
1446 for (i = 0; i < avi->num_streams; i++) {
1447 GstAviStream *stream;
1449 if (G_UNLIKELY (!(stream = &avi->stream[i])))
1451 if (G_UNLIKELY (!stream->strh))
1453 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
1456 /* we interested in the end_ts of the last entry, which is the total
1457 * duration of this stream */
1458 gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
1459 NULL, &stream->idx_duration, NULL, NULL);
1461 total_idx += stream->idx_n;
1462 #ifndef GST_DISABLE_GST_DEBUG
1463 total_max += stream->idx_max;
1465 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
1466 "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
1467 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
1468 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
1469 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
1470 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
1472 total_idx *= sizeof (GstAviIndexEntry);
1473 #ifndef GST_DISABLE_GST_DEBUG
1474 total_max *= sizeof (GstAviIndexEntry);
1476 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
1477 total_max, total_idx, total_max - total_idx);
1479 if (total_idx == 0) {
1480 GST_WARNING_OBJECT (avi, "Index is empty !");
1487 * gst_avi_demux_parse_subindex:
1489 * @buf: input data to use for parsing.
1490 * @stream: stream context.
1491 * @entries_list: a list (returned by the function) containing all the
1492 * indexes parsed in this specific subindex. The first
1493 * entry is also a pointer to allocated memory that needs
1494 * to be free´ed. May be NULL if no supported indexes were
1497 * Reads superindex (openDML-2 spec stuff) from the provided data.
1498 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1500 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1501 * throw an error, caller should bail out asap.
1504 gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
1516 size = GST_BUFFER_SIZE (buf);
1522 data = GST_BUFFER_DATA (buf);
1524 /* We don't support index-data yet */
1526 goto not_implemented;
1528 /* check type of index. The opendml2 specs state that
1529 * there should be 4 dwords per array entry. Type can be
1530 * either frame or field (and we don't care). */
1531 bpe = (data[2] & 0x01) ? 12 : 8;
1532 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1533 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1534 GST_WARNING_OBJECT (avi,
1535 "Superindex for stream %d has unexpected "
1536 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1537 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1538 bpe = GST_READ_UINT16_LE (data) * 4;
1540 num = GST_READ_UINT32_LE (&data[4]);
1541 baseoff = GST_READ_UINT64_LE (&data[12]);
1543 /* If there's nothing, just return ! */
1547 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1549 for (i = 0; i < num; i++) {
1550 GstAviIndexEntry entry;
1552 if (size < 24 + bpe * (i + 1))
1555 /* fill in offset and size. offset contains the keyframe flag in the
1557 entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1558 entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1560 if (stream->strh->type == GST_RIFF_FCC_auds) {
1561 /* all audio frames are keyframes */
1562 ENTRY_SET_KEYFRAME (&entry);
1564 /* else read flags */
1565 entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
1567 entry.size &= ~0x80000000;
1570 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
1573 gst_buffer_unref (buf);
1580 GST_ERROR_OBJECT (avi,
1581 "Not enough data to parse subindex (%d available, 24 needed)", size);
1582 gst_buffer_unref (buf);
1583 return TRUE; /* continue */
1587 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1588 ("Subindex-is-data is not implemented"));
1589 gst_buffer_unref (buf);
1594 GST_DEBUG_OBJECT (avi, "the index is empty");
1595 gst_buffer_unref (buf);
1600 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1601 ("Cannot allocate memory for %u*%u=%u bytes",
1602 (guint) sizeof (GstAviIndexEntry), num,
1603 (guint) sizeof (GstAviIndexEntry) * num));
1604 gst_buffer_unref (buf);
1610 * Create and push a flushing seek event upstream
1613 perform_seek_to_offset (GstAviDemux * demux, guint64 offset)
1618 GST_DEBUG_OBJECT (demux, "Seeking to %" G_GUINT64_FORMAT, offset);
1621 gst_event_new_seek (1.0, GST_FORMAT_BYTES,
1622 GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
1623 GST_SEEK_TYPE_NONE, -1);
1625 res = gst_pad_push_event (demux->sinkpad, event);
1628 demux->offset = offset;
1633 * Read AVI index when streaming
1636 gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
1638 guint32 tag = 0, size;
1639 GstBuffer *buf = NULL;
1642 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1644 if (avi->odml_subidxs[avi->odml_subidx] != avi->offset)
1647 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1650 /* this is the ODML chunk we expect */
1651 odml_stream = avi->odml_stream;
1653 if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + odml_stream / 10,
1654 '0' + odml_stream % 10)) &&
1655 (tag != GST_MAKE_FOURCC ('0' + odml_stream / 10,
1656 '0' + odml_stream % 10, 'i', 'x'))) {
1657 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1658 GST_FOURCC_ARGS (tag));
1662 avi->offset += 8 + GST_ROUND_UP_2 (size);
1663 /* flush chunk header so we get just the 'size' payload data */
1664 gst_adapter_flush (avi->adapter, 8);
1665 buf = gst_adapter_take_buffer (avi->adapter, size);
1667 if (!gst_avi_demux_parse_subindex (avi, &avi->stream[odml_stream], buf))
1670 /* we parsed the index, go to next subindex */
1673 if (avi->odml_subidxs[avi->odml_subidx] == GST_BUFFER_OFFSET_NONE) {
1674 /* we reached the end of the indexes for this stream, move to the next
1675 * stream to handle the first index */
1677 avi->odml_subidx = 0;
1679 if (avi->odml_stream < avi->num_streams) {
1680 /* there are more indexes */
1681 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
1683 /* we're done, get stream stats now */
1684 avi->have_index = gst_avi_demux_do_index_stats (avi);
1690 /* seek to next index */
1691 return perform_seek_to_offset (avi, avi->odml_subidxs[avi->odml_subidx]);
1698 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
1704 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1706 for (n = 0; n < avi->num_streams; n++) {
1707 GstAviStream *stream = &avi->stream[n];
1709 if (stream->indexes == NULL)
1712 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1713 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
1714 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1716 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1717 '0' + stream->num % 10)) &&
1718 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1719 '0' + stream->num % 10, 'i', 'x'))) {
1720 /* Some ODML files (created by god knows what muxer) have a ##ix format
1721 * instead of the 'official' ix##. They are still valid though. */
1722 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1723 GST_FOURCC_ARGS (tag));
1724 gst_buffer_unref (buf);
1728 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1732 g_free (stream->indexes);
1733 stream->indexes = NULL;
1735 /* get stream stats now */
1736 avi->have_index = gst_avi_demux_do_index_stats (avi);
1740 * gst_avi_demux_riff_parse_vprp:
1741 * @element: caller element (used for debugging/error).
1742 * @buf: input data to be used for parsing, stripped from header.
1743 * @vprp: a pointer (returned by this function) to a filled-in vprp
1744 * structure. Caller should free it.
1746 * Parses a video stream´s vprp. This function takes ownership of @buf.
1748 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1749 * should be skipped on error, but it is not fatal.
1752 gst_avi_demux_riff_parse_vprp (GstElement * element,
1753 GstBuffer * buf, gst_riff_vprp ** _vprp)
1755 gst_riff_vprp *vprp;
1758 g_return_val_if_fail (buf != NULL, FALSE);
1759 g_return_val_if_fail (_vprp != NULL, FALSE);
1761 if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1764 vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1766 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1767 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1768 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1769 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1770 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1771 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1772 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1773 vprp->width = GUINT32_FROM_LE (vprp->width);
1774 vprp->height = GUINT32_FROM_LE (vprp->height);
1775 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1779 /* calculate fields based on size */
1780 k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
1782 if (vprp->fields > k) {
1783 GST_WARNING_OBJECT (element,
1784 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1787 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1788 GST_WARNING_OBJECT (element,
1789 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1790 GST_RIFF_VPRP_VIDEO_FIELDS);
1791 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1793 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1794 for (k = 0; k < vprp->fields; k++) {
1795 gst_riff_vprp_video_field_desc *fd;
1797 fd = &vprp->field_info[k];
1798 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1799 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1800 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1801 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1802 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1803 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1804 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1805 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1810 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1811 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1812 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1813 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1814 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1815 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1816 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1817 vprp->aspect & 0xffff);
1818 GST_INFO_OBJECT (element, " width %d", vprp->width);
1819 GST_INFO_OBJECT (element, " height %d", vprp->height);
1820 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1821 for (k = 0; k < vprp->fields; k++) {
1822 gst_riff_vprp_video_field_desc *fd;
1824 fd = &(vprp->field_info[k]);
1825 GST_INFO_OBJECT (element, " field %u description:", k);
1826 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1827 fd->compressed_bm_height);
1828 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1829 fd->compressed_bm_width);
1830 GST_INFO_OBJECT (element, " valid_bm_height %d",
1831 fd->valid_bm_height);
1832 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1833 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1834 fd->valid_bm_x_offset);
1835 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1836 fd->valid_bm_y_offset);
1837 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1838 fd->video_x_t_offset);
1839 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1842 gst_buffer_unref (buf);
1851 GST_ERROR_OBJECT (element,
1852 "Too small vprp (%d available, at least %d needed)",
1853 GST_BUFFER_SIZE (buf),
1854 (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1855 gst_buffer_unref (buf);
1861 gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
1865 GST_DEBUG_OBJECT (avi, "force : %d", force);
1867 for (i = 0; i < avi->num_streams; i++) {
1868 GstAviStream *stream = &avi->stream[i];
1870 if (force || stream->idx_n != 0) {
1871 GST_LOG_OBJECT (avi, "Added pad %s with caps %" GST_PTR_FORMAT,
1872 GST_PAD_NAME (stream->pad), GST_PAD_CAPS (stream->pad));
1873 gst_element_add_pad ((GstElement *) avi, stream->pad);
1875 if (avi->element_index)
1876 gst_index_get_writer_id (avi->element_index,
1877 GST_OBJECT_CAST (stream->pad), &stream->index_id);
1879 stream->exposed = TRUE;
1880 if (avi->main_stream == -1)
1881 avi->main_stream = i;
1883 GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
1885 gst_avi_demux_reset_stream (avi, stream);
1890 /* buf contains LIST chunk data, and will be padded to even size,
1891 * since some buggy files do not account for the padding of chunks
1892 * within a LIST in the size of the LIST */
1894 gst_avi_demux_roundup_list (GstAviDemux * avi, GstBuffer ** buf)
1896 gint size = GST_BUFFER_SIZE (*buf);
1898 if (G_UNLIKELY (size & 1)) {
1901 GST_DEBUG_OBJECT (avi, "rounding up dubious list size %d", size);
1902 obuf = gst_buffer_new_and_alloc (size + 1);
1903 memcpy (GST_BUFFER_DATA (obuf), GST_BUFFER_DATA (*buf), size);
1904 /* assume 0 padding, at least makes outcome deterministic */
1905 (GST_BUFFER_DATA (obuf))[size] = 0;
1906 gst_buffer_replace (buf, obuf);
1911 * gst_avi_demux_parse_stream:
1912 * @avi: calling element (used for debugging/errors).
1913 * @buf: input buffer used to parse the stream.
1915 * Parses all subchunks in a strl chunk (which defines a single
1916 * stream). Discards the buffer after use. This function will
1917 * increment the stream counter internally.
1919 * Returns: whether the stream was identified successfully.
1920 * Errors are not fatal. It does indicate the stream
1924 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1926 GstAviStream *stream;
1927 GstElementClass *klass;
1928 GstPadTemplate *templ;
1929 GstBuffer *sub = NULL;
1932 gchar *codec_name = NULL, *padname = NULL;
1933 const gchar *tag_name;
1934 GstCaps *caps = NULL;
1936 GstElement *element;
1937 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1938 gst_riff_vprp *vprp = NULL;
1940 element = GST_ELEMENT_CAST (avi);
1942 GST_DEBUG_OBJECT (avi, "Parsing stream");
1944 gst_avi_demux_roundup_list (avi, &buf);
1946 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1947 GST_WARNING_OBJECT (avi,
1948 "maximum no of streams (%d) exceeded, ignoring stream",
1949 GST_AVI_DEMUX_MAX_STREAMS);
1950 gst_buffer_unref (buf);
1951 /* not a fatal error, let's say */
1955 stream = &avi->stream[avi->num_streams];
1957 /* initial settings */
1958 stream->idx_duration = GST_CLOCK_TIME_NONE;
1959 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1960 stream->duration = GST_CLOCK_TIME_NONE;
1962 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1963 /* sub can be NULL if the chunk is empty */
1965 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1966 GST_FOURCC_ARGS (tag));
1970 case GST_RIFF_TAG_strh:
1972 gst_riff_strh *strh;
1975 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1978 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1979 /* ownership given away */
1981 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1985 strh = stream->strh;
1986 /* sanity check; stream header frame rate matches global header
1988 if (stream->strh->type == GST_RIFF_FCC_vids) {
1990 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1992 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1993 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1994 "frame duration = %d ms", strh->rate, strh->scale,
1995 (gint) (s_dur / GST_MSECOND));
1996 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1997 strh->rate = GST_SECOND / GST_USECOND;
1998 strh->scale = h_dur / GST_USECOND;
1999 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
2000 strh->rate, strh->scale);
2003 /* determine duration as indicated by header */
2004 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
2005 strh->scale, GST_SECOND, (guint64) strh->rate);
2006 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
2007 GST_TIME_ARGS (stream->hdr_duration));
2008 if (stream->hdr_duration == 0)
2009 stream->hdr_duration = GST_CLOCK_TIME_NONE;
2014 case GST_RIFF_TAG_strf:
2016 gboolean res = FALSE;
2019 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
2023 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
2026 switch (stream->strh->type) {
2027 case GST_RIFF_FCC_vids:
2028 stream->is_vbr = TRUE;
2029 res = gst_riff_parse_strf_vids (element, sub,
2030 &stream->strf.vids, &stream->extradata);
2032 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
2034 case GST_RIFF_FCC_auds:
2036 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
2037 &stream->extradata);
2041 stream->is_vbr = (stream->strh->samplesize == 0)
2042 && stream->strh->scale > 1
2043 && stream->strf.auds->blockalign != 1;
2044 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
2045 stream->is_vbr, res);
2046 /* we need these or we have no way to come up with timestamps */
2047 if ((!stream->is_vbr && !stream->strf.auds->av_bps) ||
2048 (stream->is_vbr && (!stream->strh->scale ||
2049 !stream->strh->rate))) {
2050 GST_WARNING_OBJECT (element,
2051 "invalid audio header, ignoring stream");
2054 /* some more sanity checks */
2055 if (stream->is_vbr) {
2056 if (stream->strf.auds->blockalign <= 4) {
2057 /* that would mean (too) many frames per chunk,
2058 * so not likely set as expected */
2059 GST_DEBUG_OBJECT (element,
2060 "suspicious blockalign %d for VBR audio; "
2061 "overriding to 1 frame per chunk",
2062 stream->strf.auds->blockalign);
2063 /* this should top any likely value */
2064 stream->strf.auds->blockalign = (1 << 12);
2068 case GST_RIFF_FCC_iavs:
2069 stream->is_vbr = TRUE;
2070 res = gst_riff_parse_strf_iavs (element, sub,
2071 &stream->strf.iavs, &stream->extradata);
2073 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
2075 case GST_RIFF_FCC_txts:
2076 /* nothing to parse here */
2077 stream->is_vbr = (stream->strh->samplesize == 0)
2078 && (stream->strh->scale > 1);
2082 GST_ERROR_OBJECT (avi,
2083 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
2084 GST_FOURCC_ARGS (stream->strh->type));
2088 gst_buffer_unref (sub);
2096 case GST_RIFF_TAG_vprp:
2099 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
2103 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
2107 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
2111 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
2112 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
2113 /* not considered fatal */
2121 case GST_RIFF_TAG_strd:
2122 if (stream->initdata)
2123 gst_buffer_unref (stream->initdata);
2124 stream->initdata = sub;
2127 case GST_RIFF_TAG_strn:
2128 g_free (stream->name);
2131 g_strndup ((gchar *) GST_BUFFER_DATA (sub),
2132 (gsize) GST_BUFFER_SIZE (sub));
2133 gst_buffer_unref (sub);
2136 stream->name = g_strdup ("");
2138 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
2141 gst_avi_demux_parse_idit (avi, sub);
2144 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
2145 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
2146 '0' + avi->num_streams % 10)) {
2147 g_free (stream->indexes);
2148 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
2149 stream->superindex = TRUE;
2153 GST_WARNING_OBJECT (avi,
2154 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
2155 GST_FOURCC_ARGS (tag));
2157 case GST_RIFF_TAG_JUNQ:
2158 case GST_RIFF_TAG_JUNK:
2162 gst_buffer_unref (sub);
2168 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
2173 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
2177 /* get class to figure out the template */
2178 klass = GST_ELEMENT_GET_CLASS (avi);
2180 /* we now have all info, let´s set up a pad and a caps and be done */
2181 /* create stream name + pad */
2182 switch (stream->strh->type) {
2183 case GST_RIFF_FCC_vids:{
2186 fourcc = (stream->strf.vids->compression) ?
2187 stream->strf.vids->compression : stream->strh->fcc_handler;
2188 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
2189 templ = gst_element_class_get_pad_template (klass, "video_%02d");
2190 caps = gst_riff_create_video_caps (fourcc, stream->strh,
2191 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
2193 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2194 GST_TYPE_FOURCC, fourcc, NULL);
2195 } else if (got_vprp && vprp) {
2196 guint32 aspect_n, aspect_d;
2199 aspect_n = vprp->aspect >> 16;
2200 aspect_d = vprp->aspect & 0xffff;
2201 /* calculate the pixel aspect ratio using w/h and aspect ratio */
2202 n = aspect_n * stream->strf.vids->height;
2203 d = aspect_d * stream->strf.vids->width;
2205 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
2207 /* very local, not needed elsewhere */
2211 tag_name = GST_TAG_VIDEO_CODEC;
2212 avi->num_v_streams++;
2215 case GST_RIFF_FCC_auds:{
2216 padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
2217 templ = gst_element_class_get_pad_template (klass, "audio_%02d");
2218 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
2219 stream->strh, stream->strf.auds, stream->extradata,
2220 stream->initdata, &codec_name);
2222 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
2223 G_TYPE_INT, stream->strf.auds->format, NULL);
2225 tag_name = GST_TAG_AUDIO_CODEC;
2226 avi->num_a_streams++;
2229 case GST_RIFF_FCC_iavs:{
2230 guint32 fourcc = stream->strh->fcc_handler;
2232 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
2233 templ = gst_element_class_get_pad_template (klass, "video_%02d");
2234 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
2235 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
2237 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2238 GST_TYPE_FOURCC, fourcc, NULL);
2240 tag_name = GST_TAG_VIDEO_CODEC;
2241 avi->num_v_streams++;
2244 case GST_RIFF_FCC_txts:{
2245 padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
2246 templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
2247 caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
2249 avi->num_t_streams++;
2253 g_return_val_if_reached (FALSE);
2256 /* no caps means no stream */
2258 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
2262 GST_DEBUG_OBJECT (element, "codec-name=%s",
2263 (codec_name ? codec_name : "NULL"));
2264 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
2266 /* set proper settings and add it */
2268 gst_object_unref (stream->pad);
2269 pad = stream->pad = gst_pad_new_from_template (templ, padname);
2272 gst_pad_use_fixed_caps (pad);
2274 gst_pad_set_formats_function (pad,
2275 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
2276 gst_pad_set_event_mask_function (pad,
2277 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
2279 gst_pad_set_event_function (pad,
2280 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
2281 gst_pad_set_query_type_function (pad,
2282 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
2283 gst_pad_set_query_function (pad,
2284 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
2286 gst_pad_set_convert_function (pad,
2287 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
2290 stream->num = avi->num_streams;
2292 stream->start_entry = 0;
2293 stream->step_entry = 0;
2294 stream->stop_entry = 0;
2296 stream->current_entry = -1;
2297 stream->current_total = 0;
2299 stream->last_flow = GST_FLOW_OK;
2300 stream->discont = TRUE;
2302 stream->total_bytes = 0;
2303 stream->total_blocks = 0;
2304 stream->n_keyframes = 0;
2307 stream->idx_max = 0;
2309 gst_pad_set_element_private (pad, stream);
2312 gst_pad_set_caps (pad, caps);
2313 gst_pad_set_active (pad, TRUE);
2314 gst_caps_unref (caps);
2318 if (!stream->taglist)
2319 stream->taglist = gst_tag_list_new ();
2321 avi->got_tags = TRUE;
2323 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
2325 g_free (codec_name);
2328 gst_buffer_unref (buf);
2335 /* unref any mem that may be in use */
2337 gst_buffer_unref (buf);
2339 gst_buffer_unref (sub);
2341 g_free (codec_name);
2342 gst_avi_demux_reset_stream (avi, stream);
2349 * gst_avi_demux_parse_odml:
2350 * @avi: calling element (used for debug/error).
2351 * @buf: input buffer to be used for parsing.
2353 * Read an openDML-2.0 extension header. Fills in the frame number
2354 * in the avi demuxer object when reading succeeds.
2357 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
2361 GstBuffer *sub = NULL;
2363 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2366 case GST_RIFF_TAG_dmlh:{
2367 gst_riff_dmlh dmlh, *_dmlh;
2370 /* sub == NULL is possible and means an empty buffer */
2371 size = sub ? GST_BUFFER_SIZE (sub) : 0;
2374 if (size < sizeof (gst_riff_dmlh)) {
2375 GST_ERROR_OBJECT (avi,
2376 "DMLH entry is too small (%d bytes, %d needed)",
2377 size, (int) sizeof (gst_riff_dmlh));
2380 _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
2381 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
2383 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
2386 avi->avih->tot_frames = dmlh.totalframes;
2391 GST_WARNING_OBJECT (avi,
2392 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
2393 GST_FOURCC_ARGS (tag));
2395 case GST_RIFF_TAG_JUNQ:
2396 case GST_RIFF_TAG_JUNK:
2398 /* skip and move to next chunk */
2400 gst_buffer_unref (sub);
2407 gst_buffer_unref (buf);
2412 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
2414 return stream->idx_n;
2417 /* find a previous entry in the index with the given flags */
2419 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
2420 guint last, gboolean keyframe)
2422 GstAviIndexEntry *entry;
2425 for (i = last; i > 0; i--) {
2426 entry = &stream->index[i - 1];
2427 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2435 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
2436 guint last, gboolean keyframe)
2438 GstAviIndexEntry *entry;
2441 for (i = last + 1; i < stream->idx_n; i++) {
2442 entry = &stream->index[i];
2443 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2447 return stream->idx_n - 1;
2451 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
2453 if (entry->total < *total)
2455 else if (entry->total > *total)
2461 * gst_avi_demux_index_for_time:
2463 * @stream: the stream
2464 * @time: a time position
2466 * Finds the index entry which time is less or equal than the requested time.
2467 * Try to avoid binary search when we can convert the time to an index
2468 * position directly (for example for video frames with a fixed duration).
2470 * Returns: the found position in the index.
2473 gst_avi_demux_index_for_time (GstAviDemux * avi,
2474 GstAviStream * stream, guint64 time)
2479 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
2481 /* easy (and common) cases */
2482 if (time == 0 || stream->idx_n == 0)
2484 if (time >= stream->idx_duration)
2485 return stream->idx_n - 1;
2487 /* figure out where we need to go. For that we convert the time to an
2488 * index entry or we convert it to a total and then do a binary search. */
2489 if (stream->is_vbr) {
2490 /* VBR stream next timestamp */
2491 if (stream->strh->type == GST_RIFF_FCC_auds) {
2492 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
2494 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
2497 /* constant rate stream */
2498 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
2502 GstAviIndexEntry *entry;
2504 /* no index, find index with binary search on total */
2505 GST_LOG_OBJECT (avi, "binary search for entry with total %"
2506 G_GUINT64_FORMAT, total);
2508 entry = gst_util_array_binary_search (stream->index,
2509 stream->idx_n, sizeof (GstAviIndexEntry),
2510 (GCompareDataFunc) gst_avi_demux_index_entry_search,
2511 GST_SEARCH_MODE_BEFORE, &total, NULL);
2513 if (entry == NULL) {
2514 GST_LOG_OBJECT (avi, "not found, assume index 0");
2517 index = entry - stream->index;
2518 GST_LOG_OBJECT (avi, "found at %u", index);
2521 GST_LOG_OBJECT (avi, "converted time to index %u", index);
2527 static inline GstAviStream *
2528 gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
2531 GstAviStream *stream;
2533 /* get the stream for this entry */
2534 stream_nr = CHUNKID_TO_STREAMNR (id);
2535 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2536 GST_WARNING_OBJECT (avi, "invalid stream nr %d", stream_nr);
2539 stream = &avi->stream[stream_nr];
2540 if (G_UNLIKELY (!stream->strh)) {
2541 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2548 * gst_avi_demux_parse_index:
2549 * @avi: calling element (used for debugging/errors).
2550 * @buf: buffer containing the full index.
2552 * Read index entries from the provided buffer.
2553 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2556 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2561 gst_riff_index_entry *index;
2563 GstAviStream *stream;
2564 GstAviIndexEntry entry;
2570 data = GST_BUFFER_DATA (buf);
2571 size = GST_BUFFER_SIZE (buf);
2573 stamp = gst_util_get_timestamp ();
2575 /* see how many items in the index */
2576 num = size / sizeof (gst_riff_index_entry);
2580 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2582 index = (gst_riff_index_entry *) data;
2584 /* figure out if the index is 0 based or relative to the MOVI start */
2585 entry.offset = GST_READ_UINT32_LE (&index[0].offset);
2586 if (entry.offset < avi->offset) {
2587 avi->index_offset = avi->offset + 8;
2588 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2590 avi->index_offset = 0;
2591 GST_DEBUG ("index is 0 based");
2594 for (i = 0, n = 0; i < num; i++) {
2595 id = GST_READ_UINT32_LE (&index[i].id);
2596 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2598 /* some sanity checks */
2599 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2600 (entry.offset == 0 && n > 0)))
2603 /* get the stream for this entry */
2604 stream = gst_avi_demux_stream_for_id (avi, id);
2605 if (G_UNLIKELY (!stream))
2608 /* handle offset and size */
2609 entry.offset += avi->index_offset + 8;
2610 entry.size = GST_READ_UINT32_LE (&index[i].size);
2613 if (stream->strh->type == GST_RIFF_FCC_auds) {
2614 /* all audio frames are keyframes */
2615 ENTRY_SET_KEYFRAME (&entry);
2618 /* else read flags */
2619 flags = GST_READ_UINT32_LE (&index[i].flags);
2620 if (flags & GST_RIFF_IF_KEYFRAME) {
2621 ENTRY_SET_KEYFRAME (&entry);
2623 ENTRY_UNSET_KEYFRAME (&entry);
2628 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2633 gst_buffer_unref (buf);
2635 /* get stream stats now */
2636 avi->have_index = gst_avi_demux_do_index_stats (avi);
2638 stamp = gst_util_get_timestamp () - stamp;
2639 GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT,
2640 GST_TIME_ARGS (stamp));
2647 GST_DEBUG_OBJECT (avi, "empty index");
2648 gst_buffer_unref (buf);
2653 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2654 ("Cannot allocate memory for %u*%u=%u bytes",
2655 (guint) sizeof (GstAviIndexEntry), num,
2656 (guint) sizeof (GstAviIndexEntry) * num));
2657 gst_buffer_unref (buf);
2663 * gst_avi_demux_stream_index:
2664 * @avi: avi demuxer object.
2666 * Seeks to index and reads it.
2669 gst_avi_demux_stream_index (GstAviDemux * avi)
2672 guint64 offset = avi->offset;
2677 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2679 /* get chunk information */
2680 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2681 if (res != GST_FLOW_OK)
2683 else if (GST_BUFFER_SIZE (buf) < 8)
2686 /* check tag first before blindy trying to read 'size' bytes */
2687 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2688 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2689 if (tag == GST_RIFF_TAG_LIST) {
2690 /* this is the movi tag */
2691 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2692 (8 + GST_ROUND_UP_2 (size)));
2693 offset += 8 + GST_ROUND_UP_2 (size);
2694 gst_buffer_unref (buf);
2695 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2696 if (res != GST_FLOW_OK)
2698 else if (GST_BUFFER_SIZE (buf) < 8)
2700 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2701 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2704 if (tag != GST_RIFF_TAG_idx1)
2709 gst_buffer_unref (buf);
2711 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2713 /* read chunk, advance offset */
2714 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2715 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2718 GST_DEBUG ("will parse index chunk size %u for tag %"
2719 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2721 gst_avi_demux_parse_index (avi, buf);
2723 #ifndef GST_DISABLE_GST_DEBUG
2724 /* debug our indexes */
2727 GstAviStream *stream;
2729 for (i = 0; i < avi->num_streams; i++) {
2730 stream = &avi->stream[i];
2731 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2732 i, stream->idx_n, stream->total_bytes);
2741 GST_DEBUG_OBJECT (avi,
2742 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2747 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2748 gst_buffer_unref (buf);
2753 GST_WARNING_OBJECT (avi,
2754 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2755 GST_FOURCC_ARGS (tag));
2756 gst_buffer_unref (buf);
2761 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2762 gst_buffer_unref (buf);
2768 * gst_avi_demux_stream_index_push:
2769 * @avi: avi demuxer object.
2774 gst_avi_demux_stream_index_push (GstAviDemux * avi)
2776 guint64 offset = avi->idx1_offset;
2781 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2783 /* get chunk information */
2784 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
2787 /* check tag first before blindly trying to read 'size' bytes */
2788 if (tag == GST_RIFF_TAG_LIST) {
2789 /* this is the movi tag */
2790 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2791 (8 + GST_ROUND_UP_2 (size)));
2792 avi->idx1_offset = offset + 8 + GST_ROUND_UP_2 (size);
2793 /* issue seek to allow chain function to handle it and return! */
2794 perform_seek_to_offset (avi, avi->idx1_offset);
2798 if (tag != GST_RIFF_TAG_idx1)
2801 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2803 /* flush chunk header */
2804 gst_adapter_flush (avi->adapter, 8);
2805 /* read chunk payload */
2806 buf = gst_adapter_take_buffer (avi->adapter, size);
2809 /* advance offset */
2810 offset += 8 + GST_ROUND_UP_2 (size);
2812 GST_DEBUG ("will parse index chunk size %u for tag %"
2813 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2815 avi->offset = avi->first_movi_offset;
2816 gst_avi_demux_parse_index (avi, buf);
2818 #ifndef GST_DISABLE_GST_DEBUG
2819 /* debug our indexes */
2822 GstAviStream *stream;
2824 for (i = 0; i < avi->num_streams; i++) {
2825 stream = &avi->stream[i];
2826 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2827 i, stream->idx_n, stream->total_bytes);
2836 GST_DEBUG_OBJECT (avi,
2837 "taking data from adapter failed: pos=%" G_GUINT64_FORMAT " size=%u",
2843 GST_WARNING_OBJECT (avi,
2844 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2845 GST_FOURCC_ARGS (tag));
2851 * gst_avi_demux_peek_tag:
2853 * Returns the tag and size of the next chunk
2855 static GstFlowReturn
2856 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2859 GstFlowReturn res = GST_FLOW_OK;
2860 GstBuffer *buf = NULL;
2864 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2865 if (res != GST_FLOW_OK)
2868 bufsize = GST_BUFFER_SIZE (buf);
2872 bufdata = GST_BUFFER_DATA (buf);
2874 *tag = GST_READ_UINT32_LE (bufdata);
2875 *size = GST_READ_UINT32_LE (bufdata + 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_unref (buf);
2889 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2894 GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
2895 res = GST_FLOW_ERROR;
2901 * gst_avi_demux_next_data_buffer:
2903 * Returns the offset and size of the next buffer
2904 * Position is the position of the buffer (after tag and size)
2906 static GstFlowReturn
2907 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2908 guint32 * tag, guint * size)
2910 guint64 off = *offset;
2915 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2916 if (res != GST_FLOW_OK)
2918 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2919 off += 8 + 4; /* skip tag + size + subtag */
2931 * gst_avi_demux_stream_scan:
2932 * @avi: calling element (used for debugging/errors).
2934 * Scan the file for all chunks to "create" a new index.
2938 gst_avi_demux_stream_scan (GstAviDemux * avi)
2941 GstAviStream *stream;
2950 * - implement non-seekable source support.
2952 GST_DEBUG_OBJECT (avi, "Creating index");
2954 /* get the size of the file */
2955 format = GST_FORMAT_BYTES;
2956 if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &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 gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, 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 GstFormat fmt = GST_FORMAT_BYTES;
3120 GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
3121 gst_pad_query_peer_duration (avi->sinkpad, &fmt, &stop);
3124 /* if upstream doesn't know the size, it's likely that it's not seekable in
3125 * practice even if it technically may be seekable */
3126 if (seekable && (start != 0 || stop <= start)) {
3127 GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
3132 GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
3133 G_GUINT64_FORMAT ")", seekable, start, stop);
3134 avi->seekable = seekable;
3136 gst_query_unref (query);
3140 * Read AVI headers when streaming
3142 static GstFlowReturn
3143 gst_avi_demux_stream_header_push (GstAviDemux * avi)
3145 GstFlowReturn ret = GST_FLOW_OK;
3150 GstBuffer *buf = NULL, *sub = NULL;
3154 GstTagList *tags = NULL;
3156 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
3158 switch (avi->header_state) {
3159 case GST_AVI_DEMUX_HEADER_TAG_LIST:
3160 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3161 avi->offset += 8 + GST_ROUND_UP_2 (size);
3162 if (tag != GST_RIFF_TAG_LIST)
3163 goto header_no_list;
3165 gst_adapter_flush (avi->adapter, 8);
3166 /* Find the 'hdrl' LIST tag */
3167 GST_DEBUG ("Reading %d bytes", size);
3168 buf = gst_adapter_take_buffer (avi->adapter, size);
3170 if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != 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_SIZE (sub) < 4)
3206 switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
3207 case GST_RIFF_LIST_strl:
3208 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3210 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3211 ("failed to parse stream, ignoring"));
3216 case GST_RIFF_LIST_odml:
3217 gst_avi_demux_parse_odml (avi, sub);
3221 GST_WARNING_OBJECT (avi,
3222 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3223 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
3226 case GST_RIFF_TAG_JUNQ:
3227 case GST_RIFF_TAG_JUNK:
3232 gst_avi_demux_parse_idit (avi, sub);
3235 GST_WARNING_OBJECT (avi,
3236 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
3237 offset, GST_FOURCC_ARGS (tag));
3239 case GST_RIFF_TAG_JUNQ:
3240 case GST_RIFF_TAG_JUNK:
3242 /* move to next chunk */
3244 gst_buffer_unref (sub);
3249 gst_buffer_unref (buf);
3250 GST_DEBUG ("elements parsed");
3252 /* check parsed streams */
3253 if (avi->num_streams == 0) {
3255 } else if (avi->num_streams != avi->avih->streams) {
3256 GST_WARNING_OBJECT (avi,
3257 "Stream header mentioned %d streams, but %d available",
3258 avi->avih->streams, avi->num_streams);
3260 GST_DEBUG ("Get junk and info next");
3261 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
3263 /* Need more data */
3267 case GST_AVI_DEMUX_HEADER_INFO:
3268 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
3270 if (gst_adapter_available (avi->adapter) < 12)
3273 data = gst_adapter_peek (avi->adapter, 12);
3274 tag = GST_READ_UINT32_LE (data);
3275 size = GST_READ_UINT32_LE (data + 4);
3276 ltag = GST_READ_UINT32_LE (data + 8);
3278 if (tag == GST_RIFF_TAG_LIST) {
3280 case GST_RIFF_LIST_movi:
3281 gst_adapter_flush (avi->adapter, 12);
3282 if (!avi->first_movi_offset)
3283 avi->first_movi_offset = avi->offset;
3285 avi->idx1_offset = avi->offset + size - 4;
3287 case GST_RIFF_LIST_INFO:
3288 GST_DEBUG ("Found INFO chunk");
3289 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3290 GST_DEBUG ("got size %d", size);
3292 gst_adapter_flush (avi->adapter, 12);
3294 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
3297 gst_adapter_flush (avi->adapter, 1);
3298 gst_riff_parse_info (GST_ELEMENT_CAST (avi), buf, &tags);
3300 if (avi->globaltags) {
3301 gst_tag_list_insert (avi->globaltags, tags,
3302 GST_TAG_MERGE_REPLACE);
3304 avi->globaltags = tags;
3308 gst_buffer_unref (buf);
3310 avi->offset += GST_ROUND_UP_2 (size) - 4;
3312 GST_DEBUG ("skipping INFO LIST prefix");
3315 /* Need more data */
3320 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3321 avi->offset += 8 + GST_ROUND_UP_2 (size);
3322 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3323 // ??? goto iterate; ???
3325 /* Need more data */
3331 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3332 avi->offset += 8 + GST_ROUND_UP_2 (size);
3333 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3336 /* Need more data */
3343 GST_WARNING ("unhandled header state: %d", avi->header_state);
3348 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3349 avi->num_streams, avi->stream[0].indexes);
3351 GST_DEBUG ("Found movi chunk. Starting to stream data");
3352 avi->state = GST_AVI_DEMUX_MOVI;
3354 /* no indexes in push mode, but it still sets some variables */
3355 gst_avi_demux_calculate_durations_from_index (avi);
3357 gst_avi_demux_expose_streams (avi, TRUE);
3359 /* prepare all streams for index 0 */
3360 for (i = 0; i < avi->num_streams; i++)
3361 avi->stream[i].current_entry = 0;
3363 /* create initial NEWSEGMENT event */
3364 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3365 stop = avi->segment.duration;
3367 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3370 gst_event_unref (avi->seg_event);
3371 avi->seg_event = gst_event_new_new_segment_full
3372 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3373 avi->segment.start, stop, avi->segment.time);
3375 gst_avi_demux_check_seekability (avi);
3377 /* at this point we know all the streams and we can signal the no more
3379 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3380 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3387 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3388 return GST_FLOW_ERROR;
3392 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3393 ("Invalid AVI header (no LIST at start): %"
3394 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3395 return GST_FLOW_ERROR;
3399 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3400 ("Invalid AVI header (no hdrl at start): %"
3401 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3402 gst_buffer_unref (buf);
3403 return GST_FLOW_ERROR;
3407 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3408 ("Invalid AVI header (no avih at start): %"
3409 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3411 gst_buffer_unref (sub);
3413 gst_buffer_unref (buf);
3414 return GST_FLOW_ERROR;
3418 gst_buffer_unref (buf);
3419 return GST_FLOW_ERROR;
3424 gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d,
3425 gint h, gint min, gint s)
3430 date = g_date_new_dmy (d, m, y);
3431 if (!g_date_valid (date)) {
3433 GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
3438 dt = gst_date_time_new_local_time (y, m, d, h, min, s);
3440 if (avi->globaltags == NULL)
3441 avi->globaltags = gst_tag_list_new ();
3443 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
3447 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE_TIME,
3449 gst_date_time_unref (dt);
3454 gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data)
3457 gint hr = 0, min = 0, sec = 0;
3460 GST_DEBUG ("data : '%s'", data);
3462 ret = sscanf (data, "%d:%d:%d %d:%d:%d", &y, &m, &d, &hr, &min, &sec);
3464 /* Attempt YYYY/MM/DD/ HH:MM variant (found in CASIO cameras) */
3465 ret = sscanf (data, "%04d/%02d/%02d/ %d:%d", &y, &m, &d, &hr, &min);
3467 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3471 gst_avi_demux_add_date_tag (avi, y, m, d, hr, min, sec);
3475 get_month_num (gchar * data, guint size)
3477 if (g_ascii_strncasecmp (data, "jan", 3) == 0) {
3479 } else if (g_ascii_strncasecmp (data, "feb", 3) == 0) {
3481 } else if (g_ascii_strncasecmp (data, "mar", 3) == 0) {
3483 } else if (g_ascii_strncasecmp (data, "apr", 3) == 0) {
3485 } else if (g_ascii_strncasecmp (data, "may", 3) == 0) {
3487 } else if (g_ascii_strncasecmp (data, "jun", 3) == 0) {
3489 } else if (g_ascii_strncasecmp (data, "jul", 3) == 0) {
3491 } else if (g_ascii_strncasecmp (data, "aug", 3) == 0) {
3493 } else if (g_ascii_strncasecmp (data, "sep", 3) == 0) {
3495 } else if (g_ascii_strncasecmp (data, "oct", 3) == 0) {
3497 } else if (g_ascii_strncasecmp (data, "nov", 3) == 0) {
3499 } else if (g_ascii_strncasecmp (data, "dec", 3) == 0) {
3507 gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data)
3509 gint year, month, day;
3510 gint hour, min, sec;
3515 ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour,
3518 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3521 month = get_month_num (monthstr, strlen (monthstr));
3522 gst_avi_demux_add_date_tag (avi, year, month, day, hour, min, sec);
3526 gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
3528 gchar *data = (gchar *) GST_BUFFER_DATA (buf);
3529 guint size = GST_BUFFER_SIZE (buf);
3530 gchar *safedata = NULL;
3534 * http://www.eden-foundation.org/products/code/film_date_stamp/index.html
3536 * This tag could be in one of the below formats
3537 * 2005:08:17 11:42:43
3538 * THU OCT 26 16:46:04 2006
3539 * Mon Mar 3 09:44:56 2008
3541 * FIXME: Our date tag doesn't include hours
3544 /* skip eventual initial whitespace */
3545 while (size > 0 && g_ascii_isspace (data[0])) {
3554 /* make a safe copy to add a \0 to the end of the string */
3555 safedata = g_strndup (data, size);
3557 /* test if the first char is a alpha or a number */
3558 if (g_ascii_isdigit (data[0])) {
3559 gst_avi_demux_parse_idit_nums_only (avi, safedata);
3562 } else if (g_ascii_isalpha (data[0])) {
3563 gst_avi_demux_parse_idit_text (avi, safedata);
3571 GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
3575 * Read full AVI headers.
3577 static GstFlowReturn
3578 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3581 GstBuffer *buf, *sub = NULL;
3585 GstElement *element = GST_ELEMENT_CAST (avi);
3587 GstTagList *tags = NULL;
3589 stamp = gst_util_get_timestamp ();
3591 /* the header consists of a 'hdrl' LIST tag */
3592 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3593 if (res != GST_FLOW_OK)
3594 goto pull_range_failed;
3595 else if (tag != GST_RIFF_TAG_LIST)
3597 else if (GST_BUFFER_SIZE (buf) < 4)
3600 GST_DEBUG_OBJECT (avi, "parsing headers");
3602 /* Find the 'hdrl' LIST tag */
3603 while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
3604 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3605 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
3608 gst_buffer_unref (buf);
3610 /* read new chunk */
3611 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3612 if (res != GST_FLOW_OK)
3613 goto pull_range_failed;
3614 else if (tag != GST_RIFF_TAG_LIST)
3616 else if (GST_BUFFER_SIZE (buf) < 4)
3620 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3622 gst_avi_demux_roundup_list (avi, &buf);
3624 /* the hdrl starts with a 'avih' header */
3625 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3627 else if (tag != GST_RIFF_TAG_avih)
3629 else if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3632 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3634 /* now, read the elements from the header until the end */
3635 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3636 /* sub can be NULL on empty tags */
3641 case GST_RIFF_TAG_LIST:
3646 if (GST_BUFFER_SIZE (sub) < 4)
3649 data = GST_BUFFER_DATA (sub);
3650 fourcc = GST_READ_UINT32_LE (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_DATA (sub) = data + 4;
3667 GST_BUFFER_SIZE (sub) -= 4;
3668 gst_riff_parse_info (element, sub, &tags);
3670 if (avi->globaltags) {
3671 gst_tag_list_insert (avi->globaltags, tags,
3672 GST_TAG_MERGE_REPLACE);
3674 avi->globaltags = tags;
3680 GST_WARNING_OBJECT (avi,
3681 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3682 GST_FOURCC_ARGS (fourcc));
3683 GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
3684 GST_BUFFER_SIZE (sub));
3686 case GST_RIFF_TAG_JUNQ:
3687 case GST_RIFF_TAG_JUNK:
3693 gst_avi_demux_parse_idit (avi, sub);
3696 GST_WARNING_OBJECT (avi,
3697 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3698 GST_FOURCC_ARGS (tag), offset);
3699 GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
3700 GST_BUFFER_SIZE (sub));
3702 case GST_RIFF_TAG_JUNQ:
3703 case GST_RIFF_TAG_JUNK:
3706 gst_buffer_unref (sub);
3711 gst_buffer_unref (buf);
3712 GST_DEBUG ("elements parsed");
3714 /* check parsed streams */
3715 if (avi->num_streams == 0)
3717 else if (avi->num_streams != avi->avih->streams) {
3718 GST_WARNING_OBJECT (avi,
3719 "Stream header mentioned %d streams, but %d available",
3720 avi->avih->streams, avi->num_streams);
3723 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3724 G_GUINT64_FORMAT, avi->offset);
3726 /* Now, find the data (i.e. skip all junk between header and data) */
3732 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3733 if (res != GST_FLOW_OK) {
3734 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3735 goto pull_range_failed;
3736 } else if (GST_BUFFER_SIZE (buf) < 12) {
3737 GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
3738 GST_BUFFER_SIZE (buf));
3739 gst_buffer_unref (buf);
3740 return GST_FLOW_ERROR;
3743 data = GST_BUFFER_DATA (buf);
3745 tag = GST_READ_UINT32_LE (data);
3746 size = GST_READ_UINT32_LE (data + 4);
3747 ltag = GST_READ_UINT32_LE (data + 8);
3749 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3750 GST_FOURCC_ARGS (tag), size);
3751 GST_MEMDUMP ("Tag content", data, GST_BUFFER_SIZE (buf));
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 %u", GST_BUFFER_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_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
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) {
3812 res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf);
3813 if (res != GST_FLOW_OK) {
3814 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3815 goto pull_range_failed;
3817 GST_MEMDUMP ("Junk", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
3818 gst_buffer_unref (buf);
3820 avi->offset += 8 + GST_ROUND_UP_2 (size);
3826 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3827 avi->num_streams, avi->stream[0].indexes);
3829 /* create or read stream index (for seeking) */
3830 if (avi->stream[0].indexes != NULL) {
3831 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3832 gst_avi_demux_read_subindexes_pull (avi);
3834 if (!avi->have_index) {
3835 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
3836 gst_avi_demux_stream_index (avi);
3838 /* still no index, scan */
3839 if (!avi->have_index) {
3840 gst_avi_demux_stream_scan (avi);
3842 /* still no index.. this is a fatal error for now.
3843 * FIXME, we should switch to plain push mode without seeking
3844 * instead of failing. */
3845 if (!avi->have_index)
3849 /* use the indexes now to construct nice durations */
3850 gst_avi_demux_calculate_durations_from_index (avi);
3852 gst_avi_demux_expose_streams (avi, FALSE);
3854 /* create initial NEWSEGMENT event */
3855 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3856 stop = avi->segment.duration;
3858 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3860 /* do initial seek to the default segment values */
3861 gst_avi_demux_do_seek (avi, &avi->segment);
3863 /* prepare initial segment */
3865 gst_event_unref (avi->seg_event);
3866 avi->seg_event = gst_event_new_new_segment_full
3867 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3868 avi->segment.start, stop, avi->segment.time);
3870 stamp = gst_util_get_timestamp () - stamp;
3871 GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT,
3872 GST_TIME_ARGS (stamp));
3874 /* at this point we know all the streams and we can signal the no more
3876 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3877 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3884 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3885 ("Invalid AVI header (no LIST at start): %"
3886 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3887 gst_buffer_unref (buf);
3888 return GST_FLOW_ERROR;
3892 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3893 ("Invalid AVI header (no hdrl at start): %"
3894 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3895 gst_buffer_unref (buf);
3896 return GST_FLOW_ERROR;
3900 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3901 ("Invalid AVI header (no avih at start): %"
3902 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3904 gst_buffer_unref (sub);
3905 gst_buffer_unref (buf);
3906 return GST_FLOW_ERROR;
3910 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3911 ("Invalid AVI header (cannot parse avih at start)"));
3912 gst_buffer_unref (buf);
3913 return GST_FLOW_ERROR;
3917 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3918 return GST_FLOW_ERROR;
3922 GST_WARNING ("file without or too big index");
3923 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3924 ("Could not get/create index"));
3925 return GST_FLOW_ERROR;
3929 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3930 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3931 return GST_FLOW_ERROR;
3935 /* move a stream to @index */
3937 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
3938 GstSegment * segment, guint index)
3940 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
3942 if (segment->rate < 0.0) {
3944 /* Because we don't know the frame order we need to push from the prev keyframe
3945 * to the next keyframe. If there is a smart decoder downstream he will notice
3946 * that there are too many encoded frames send and return UNEXPECTED when there
3947 * are enough decoded frames to fill the segment. */
3948 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
3950 /* FIXME, we go back to 0, we should look at segment.start. We will however
3951 * stop earlier when the see the timestamp < segment.start */
3952 stream->start_entry = 0;
3953 stream->step_entry = index;
3954 stream->current_entry = index;
3955 stream->stop_entry = next_key;
3957 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
3958 stream->start_entry, stream->step_entry, stream->stop_entry);
3960 stream->start_entry = index;
3961 stream->step_entry = index;
3962 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
3964 if (stream->current_entry != index) {
3965 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
3966 stream->current_entry, index);
3967 stream->current_entry = index;
3968 stream->discont = TRUE;
3971 /* update the buffer info */
3972 gst_avi_demux_get_buffer_info (avi, stream, index,
3973 &stream->current_timestamp, &stream->current_ts_end,
3974 &stream->current_offset, &stream->current_offset_end);
3976 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
3977 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3978 ", off_end %" G_GUINT64_FORMAT, index,
3979 GST_TIME_ARGS (stream->current_timestamp),
3980 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3981 stream->current_offset_end);
3983 GST_DEBUG_OBJECT (avi, "Seeking to offset %" G_GUINT64_FORMAT,
3984 stream->index[index].offset);
3988 * Do the actual seeking.
3991 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3993 GstClockTime seek_time;
3996 GstAviStream *stream;
3998 seek_time = segment->last_stop;
3999 keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
4001 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
4002 " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
4004 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4005 * which is mostly correct... */
4006 stream = &avi->stream[avi->main_stream];
4008 /* get the entry index for the requested position */
4009 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
4010 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
4012 /* check if we are already on a keyframe */
4013 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4014 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
4015 /* now go to the previous keyframe, this is where we should start
4017 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4018 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
4021 /* move the main stream to this position */
4022 gst_avi_demux_move_stream (avi, stream, segment, index);
4025 /* when seeking to a keyframe, we update the result seek time
4026 * to the time of the keyframe. */
4027 seek_time = stream->current_timestamp;
4028 GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
4029 GST_TIME_ARGS (seek_time));
4032 /* the seek time is also the last_stop and stream time when going
4034 segment->last_stop = seek_time;
4035 if (segment->rate > 0.0)
4036 segment->time = seek_time;
4038 /* now set DISCONT and align the other streams */
4039 for (i = 0; i < avi->num_streams; i++) {
4040 GstAviStream *ostream;
4042 ostream = &avi->stream[i];
4043 if ((ostream == stream) || (ostream->index == NULL))
4046 /* get the entry index for the requested position */
4047 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
4049 /* move to previous keyframe */
4050 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
4051 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
4053 gst_avi_demux_move_stream (avi, ostream, segment, index);
4055 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
4056 GST_TIME_ARGS (seek_time));
4062 * Handle seek event in pull mode.
4065 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4070 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4074 GstSegment seeksegment = { 0, };
4078 GST_DEBUG_OBJECT (avi, "doing seek with event");
4080 gst_event_parse_seek (event, &rate, &format, &flags,
4081 &cur_type, &cur, &stop_type, &stop);
4083 /* we have to have a format as the segment format. Try to convert
4085 if (format != GST_FORMAT_TIME) {
4086 GstFormat fmt = GST_FORMAT_TIME;
4087 gboolean res = TRUE;
4089 if (cur_type != GST_SEEK_TYPE_NONE)
4090 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
4091 if (res && stop_type != GST_SEEK_TYPE_NONE)
4092 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
4098 GST_DEBUG_OBJECT (avi,
4099 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
4100 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
4101 /* FIXME: can we do anything with rate!=1.0 */
4103 GST_DEBUG_OBJECT (avi, "doing seek without event");
4108 /* save flush flag */
4109 flush = flags & GST_SEEK_FLAG_FLUSH;
4112 GstEvent *fevent = gst_event_new_flush_start ();
4114 /* for a flushing seek, we send a flush_start on all pads. This will
4115 * eventually stop streaming with a WRONG_STATE. We can thus eventually
4116 * take the STREAM_LOCK. */
4117 GST_DEBUG_OBJECT (avi, "sending flush start");
4118 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4119 gst_pad_push_event (avi->sinkpad, fevent);
4121 /* a non-flushing seek, we PAUSE the task so that we can take the
4123 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
4124 gst_pad_pause_task (avi->sinkpad);
4127 /* wait for streaming to stop */
4128 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
4129 GST_PAD_STREAM_LOCK (avi->sinkpad);
4131 /* copy segment, we need this because we still need the old
4132 * segment when we close the current segment. */
4133 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4136 GST_DEBUG_OBJECT (avi, "configuring seek");
4137 gst_segment_set_seek (&seeksegment, rate, format, flags,
4138 cur_type, cur, stop_type, stop, &update);
4140 /* do the seek, seeksegment.last_stop contains the new position, this
4141 * actually never fails. */
4142 gst_avi_demux_do_seek (avi, &seeksegment);
4144 gst_event_replace (&avi->close_seg_event, NULL);
4146 GstEvent *fevent = gst_event_new_flush_stop ();
4148 GST_DEBUG_OBJECT (avi, "sending flush stop");
4149 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4150 gst_pad_push_event (avi->sinkpad, fevent);
4151 } else if (avi->segment_running) {
4152 /* we are running the current segment and doing a non-flushing seek,
4153 * close the segment first based on the last_stop. */
4154 GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
4155 " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
4156 avi->close_seg_event = gst_event_new_new_segment_full (TRUE,
4157 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4158 avi->segment.start, avi->segment.last_stop, avi->segment.time);
4161 /* now update the real segment info */
4162 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
4164 /* post the SEGMENT_START message when we do segmented playback */
4165 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4166 gst_element_post_message (GST_ELEMENT_CAST (avi),
4167 gst_message_new_segment_start (GST_OBJECT_CAST (avi),
4168 avi->segment.format, avi->segment.last_stop));
4171 /* prepare for streaming again */
4172 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
4173 stop = avi->segment.duration;
4175 /* queue the segment event for the streaming thread. */
4177 gst_event_unref (avi->seg_event);
4178 if (avi->segment.rate > 0.0) {
4179 /* forwards goes from last_stop to stop */
4180 avi->seg_event = gst_event_new_new_segment_full (FALSE,
4181 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4182 avi->segment.last_stop, stop, avi->segment.time);
4184 /* reverse goes from start to last_stop */
4185 avi->seg_event = gst_event_new_new_segment_full (FALSE,
4186 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4187 avi->segment.start, avi->segment.last_stop, avi->segment.time);
4190 if (!avi->streaming) {
4191 avi->segment_running = TRUE;
4192 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4195 /* reset the last flow and mark discont, seek is always DISCONT */
4196 for (i = 0; i < avi->num_streams; i++) {
4197 GST_DEBUG_OBJECT (avi, "marking DISCONT");
4198 avi->stream[i].last_flow = GST_FLOW_OK;
4199 avi->stream[i].discont = TRUE;
4201 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
4208 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4214 * Handle seek event in push mode.
4217 avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4222 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4225 GstAviStream *stream;
4229 GstSegment seeksegment;
4232 /* check we have the index */
4233 if (!avi->have_index) {
4234 GST_DEBUG_OBJECT (avi, "no seek index built, seek aborted.");
4237 GST_DEBUG_OBJECT (avi, "doing push-based seek with event");
4240 gst_event_parse_seek (event, &rate, &format, &flags,
4241 &cur_type, &cur, &stop_type, &stop);
4243 if (format != GST_FORMAT_TIME) {
4244 GstFormat fmt = GST_FORMAT_TIME;
4245 gboolean res = TRUE;
4247 if (cur_type != GST_SEEK_TYPE_NONE)
4248 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
4249 if (res && stop_type != GST_SEEK_TYPE_NONE)
4250 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
4252 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4259 /* let gst_segment handle any tricky stuff */
4260 GST_DEBUG_OBJECT (avi, "configuring seek");
4261 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4262 gst_segment_set_seek (&seeksegment, rate, format, flags,
4263 cur_type, cur, stop_type, stop, &update);
4265 keyframe = !!(flags & GST_SEEK_FLAG_KEY_UNIT);
4266 cur = seeksegment.last_stop;
4268 GST_DEBUG_OBJECT (avi,
4269 "Seek requested: ts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
4270 ", kf %u, rate %lf", GST_TIME_ARGS (cur), GST_TIME_ARGS (stop), keyframe,
4274 GST_DEBUG_OBJECT (avi, "negative rate seek not supported in push mode");
4278 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4279 * which is mostly correct... */
4280 str_num = avi->main_stream;
4281 stream = &avi->stream[str_num];
4283 /* get the entry index for the requested position */
4284 index = gst_avi_demux_index_for_time (avi, stream, cur);
4285 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT,
4286 str_num, index, GST_TIME_ARGS (cur));
4288 /* check if we are already on a keyframe */
4289 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4290 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4291 /* now go to the previous keyframe, this is where we should start
4293 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4294 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index);
4297 gst_avi_demux_get_buffer_info (avi, stream, index,
4298 &stream->current_timestamp, &stream->current_ts_end,
4299 &stream->current_offset, &stream->current_offset_end);
4301 /* re-use cur to be the timestamp of the seek as it _will_ be */
4302 cur = stream->current_timestamp;
4304 min_offset = stream->index[index].offset;
4305 avi->seek_kf_offset = min_offset - 8;
4307 GST_DEBUG_OBJECT (avi,
4308 "Seek to: ts %" GST_TIME_FORMAT " (on str %u, idx %u, offset %"
4309 G_GUINT64_FORMAT ")", GST_TIME_ARGS (stream->current_timestamp), str_num,
4312 for (n = 0; n < avi->num_streams; n++) {
4313 GstAviStream *str = &avi->stream[n];
4316 if (n == avi->main_stream)
4319 /* get the entry index for the requested position */
4320 idx = gst_avi_demux_index_for_time (avi, str, cur);
4321 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT, n,
4322 idx, GST_TIME_ARGS (cur));
4324 /* check if we are already on a keyframe */
4325 if (!ENTRY_IS_KEYFRAME (&str->index[idx])) {
4326 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4327 /* now go to the previous keyframe, this is where we should start
4329 idx = gst_avi_demux_index_prev (avi, str, idx, TRUE);
4330 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", idx);
4333 gst_avi_demux_get_buffer_info (avi, str, idx,
4334 &str->current_timestamp, &str->current_ts_end,
4335 &str->current_offset, &str->current_offset_end);
4337 if (str->index[idx].offset < min_offset) {
4338 min_offset = str->index[idx].offset;
4339 GST_DEBUG_OBJECT (avi,
4340 "Found an earlier offset at %" G_GUINT64_FORMAT ", str %u",
4348 GST_DEBUG_OBJECT (avi,
4349 "Seek performed: str %u, offset %" G_GUINT64_FORMAT ", idx %u, ts %"
4350 GST_TIME_FORMAT ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4351 ", off_end %" G_GUINT64_FORMAT, str_num, min_offset, index,
4352 GST_TIME_ARGS (stream->current_timestamp),
4353 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4354 stream->current_offset_end);
4356 /* index data refers to data, not chunk header (for pull mode convenience) */
4358 GST_DEBUG_OBJECT (avi, "seeking to chunk at offset %" G_GUINT64_FORMAT,
4361 if (!perform_seek_to_offset (avi, min_offset)) {
4362 GST_DEBUG_OBJECT (avi, "seek event failed!");
4370 * Handle whether we can perform the seek event or if we have to let the chain
4371 * function handle seeks to build the seek indexes first.
4374 gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
4377 /* check for having parsed index already */
4378 if (!avi->have_index) {
4380 gboolean building_index;
4382 GST_OBJECT_LOCK (avi);
4383 /* handle the seek event in the chain function */
4384 avi->state = GST_AVI_DEMUX_SEEK;
4386 /* copy the event */
4387 if (avi->seek_event)
4388 gst_event_unref (avi->seek_event);
4389 avi->seek_event = gst_event_ref (event);
4391 /* set the building_index flag so that only one thread can setup the
4392 * structures for index seeking. */
4393 building_index = avi->building_index;
4394 if (!building_index) {
4395 avi->building_index = TRUE;
4396 if (avi->stream[0].indexes) {
4397 avi->odml_stream = 0;
4398 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
4399 offset = avi->odml_subidxs[0];
4401 offset = avi->idx1_offset;
4404 GST_OBJECT_UNLOCK (avi);
4406 if (!building_index) {
4407 /* seek to the first subindex or legacy index */
4408 GST_INFO_OBJECT (avi,
4409 "Seeking to legacy index/first subindex at %" G_GUINT64_FORMAT,
4411 return perform_seek_to_offset (avi, offset);
4414 /* FIXME: we have to always return true so that we don't block the seek
4416 * Note: maybe it is OK to return true if we're still building the index */
4420 return avi_demux_handle_seek_push (avi, pad, event);
4424 * Helper for gst_avi_demux_invert()
4427 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
4429 memcpy (tmp, d1, bytes);
4430 memcpy (d1, d2, bytes);
4431 memcpy (d2, tmp, bytes);
4435 #define gst_avi_demux_is_uncompressed(fourcc) \
4437 (fourcc == GST_RIFF_DIB || \
4438 fourcc == GST_RIFF_rgb || \
4439 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW))
4442 * Invert DIB buffers... Takes existing buffer and
4443 * returns either the buffer or a new one (with old
4444 * one dereferenced).
4445 * FIXME: can't we preallocate tmp? and remember stride, bpp?
4448 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
4455 if (stream->strh->type != GST_RIFF_FCC_vids)
4458 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
4459 return buf; /* Ignore non DIB buffers */
4462 s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
4463 if (!gst_structure_get_int (s, "bpp", &bpp)) {
4464 GST_WARNING ("Failed to retrieve depth from caps");
4468 if (stream->strf.vids == NULL) {
4469 GST_WARNING ("Failed to retrieve vids for stream");
4473 h = stream->strf.vids->height;
4474 w = stream->strf.vids->width;
4475 stride = GST_ROUND_UP_4 (w * (bpp / 8));
4477 buf = gst_buffer_make_writable (buf);
4478 if (GST_BUFFER_SIZE (buf) < (stride * h)) {
4479 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
4483 tmp = g_malloc (stride);
4485 for (y = 0; y < h / 2; y++) {
4486 swap_line (GST_BUFFER_DATA (buf) + stride * y,
4487 GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
4496 gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
4497 GstClockTime timestamp, guint64 offset, gboolean keyframe)
4499 /* do not add indefinitely for open-ended streaming */
4500 if (G_UNLIKELY (avi->element_index && avi->seekable)) {
4501 GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
4502 G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
4503 gst_index_add_association (avi->element_index, avi->index_id,
4504 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT :
4505 GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp,
4506 GST_FORMAT_BYTES, offset, NULL);
4507 /* current_entry is DEFAULT (frame #) */
4508 gst_index_add_association (avi->element_index, stream->index_id,
4509 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT :
4510 GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp,
4511 GST_FORMAT_BYTES, offset, GST_FORMAT_DEFAULT, stream->current_entry,
4517 * Returns the aggregated GstFlowReturn.
4519 static GstFlowReturn
4520 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
4524 gboolean unexpected = FALSE, not_linked = TRUE;
4526 /* store the value */
4527 stream->last_flow = ret;
4529 /* any other error that is not-linked or eos can be returned right away */
4530 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4533 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
4534 for (i = 0; i < avi->num_streams; i++) {
4535 GstAviStream *ostream = &avi->stream[i];
4537 ret = ostream->last_flow;
4538 /* no unexpected or unlinked, return */
4539 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4542 /* we check to see if we have at least 1 unexpected or all unlinked */
4543 unexpected |= (ret == GST_FLOW_UNEXPECTED);
4544 not_linked &= (ret == GST_FLOW_NOT_LINKED);
4546 /* when we get here, we all have unlinked or unexpected */
4548 ret = GST_FLOW_NOT_LINKED;
4549 else if (unexpected)
4550 ret = GST_FLOW_UNEXPECTED;
4552 GST_LOG_OBJECT (avi, "combined %s to return %s",
4553 gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret));
4557 /* move @stream to the next position in its index */
4558 static GstFlowReturn
4559 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
4562 guint old_entry, new_entry;
4564 old_entry = stream->current_entry;
4566 new_entry = old_entry + 1;
4568 /* see if we reached the end */
4569 if (new_entry >= stream->stop_entry) {
4570 if (avi->segment.rate < 0.0) {
4571 if (stream->step_entry == stream->start_entry) {
4572 /* we stepped all the way to the start, eos */
4573 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
4576 /* backwards, stop becomes step, find a new step */
4577 stream->stop_entry = stream->step_entry;
4578 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
4579 stream->stop_entry, TRUE);
4581 GST_DEBUG_OBJECT (avi,
4582 "reverse playback jump: start %u, step %u, stop %u",
4583 stream->start_entry, stream->step_entry, stream->stop_entry);
4585 /* and start from the previous keyframe now */
4586 new_entry = stream->step_entry;
4589 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
4594 if (new_entry != old_entry) {
4595 stream->current_entry = new_entry;
4596 stream->current_total = stream->index[new_entry].total;
4598 if (new_entry == old_entry + 1) {
4599 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
4600 old_entry, new_entry);
4601 /* we simply moved one step forwards, reuse current info */
4602 stream->current_timestamp = stream->current_ts_end;
4603 stream->current_offset = stream->current_offset_end;
4604 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4605 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
4607 /* we moved DISCONT, full update */
4608 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4609 &stream->current_timestamp, &stream->current_ts_end,
4610 &stream->current_offset, &stream->current_offset_end);
4611 /* and MARK discont for this stream */
4612 stream->last_flow = GST_FLOW_OK;
4613 stream->discont = TRUE;
4614 GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
4615 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4616 ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
4617 GST_TIME_ARGS (stream->current_timestamp),
4618 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4619 stream->current_offset_end);
4627 GST_DEBUG_OBJECT (avi, "we are EOS");
4628 /* setting current_timestamp to -1 marks EOS */
4629 stream->current_timestamp = -1;
4630 return GST_FLOW_UNEXPECTED;
4634 /* find the stream with the lowest current position when going forwards or with
4635 * the highest position when going backwards, this is the stream
4636 * we should push from next */
4638 gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
4640 guint64 min_time, max_time;
4641 guint stream_num, i;
4644 min_time = G_MAXUINT64;
4647 for (i = 0; i < avi->num_streams; i++) {
4649 GstAviStream *stream;
4651 stream = &avi->stream[i];
4653 /* ignore streams that finished */
4654 if (stream->last_flow == GST_FLOW_UNEXPECTED)
4657 position = stream->current_timestamp;
4659 /* position of -1 is EOS */
4660 if (position != -1) {
4661 if (rate > 0.0 && position < min_time) {
4662 min_time = position;
4664 } else if (rate < 0.0 && position >= max_time) {
4665 max_time = position;
4673 static GstFlowReturn
4674 gst_avi_demux_loop_data (GstAviDemux * avi)
4676 GstFlowReturn ret = GST_FLOW_OK;
4678 GstAviStream *stream;
4679 gboolean processed = FALSE;
4681 guint64 offset, size;
4682 GstClockTime timestamp, duration;
4683 guint64 out_offset, out_offset_end;
4685 GstAviIndexEntry *entry;
4688 stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
4691 if (G_UNLIKELY (stream_num == -1)) {
4692 GST_DEBUG_OBJECT (avi, "all streams are EOS");
4696 /* we have the stream now */
4697 stream = &avi->stream[stream_num];
4699 /* skip streams without pads */
4701 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
4706 /* get the timing info for the entry */
4707 timestamp = stream->current_timestamp;
4708 duration = stream->current_ts_end - timestamp;
4709 out_offset = stream->current_offset;
4710 out_offset_end = stream->current_offset_end;
4712 /* get the entry data info */
4713 entry = &stream->index[stream->current_entry];
4714 offset = entry->offset;
4716 keyframe = ENTRY_IS_KEYFRAME (entry);
4718 /* skip empty entries */
4720 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
4721 stream->current_entry, size, stream->pad);
4725 if (avi->segment.rate > 0.0) {
4726 /* only check this for fowards playback for now */
4727 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4728 && (timestamp > avi->segment.stop)) {
4733 GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
4734 G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
4735 stream_num, offset, offset, keyframe);
4737 /* FIXME, check large chunks and cut them up */
4739 /* pull in the data */
4740 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
4741 if (ret != GST_FLOW_OK)
4744 /* check for short buffers, this is EOS as well */
4745 if (GST_BUFFER_SIZE (buf) < size)
4748 /* invert the picture if needed */
4749 buf = gst_avi_demux_invert (stream, buf);
4751 /* mark non-keyframes */
4753 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4755 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4757 GST_BUFFER_TIMESTAMP (buf) = timestamp;
4758 GST_BUFFER_DURATION (buf) = duration;
4759 GST_BUFFER_OFFSET (buf) = out_offset;
4760 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
4762 /* mark discont when pending */
4763 if (stream->discont) {
4764 GST_DEBUG_OBJECT (avi, "setting DISCONT flag");
4765 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4766 stream->discont = FALSE;
4769 gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
4771 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4773 /* update current position in the segment */
4774 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, timestamp);
4776 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %u, ts %"
4777 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4778 ", off_end %" G_GUINT64_FORMAT,
4779 GST_BUFFER_SIZE (buf), GST_TIME_ARGS (timestamp),
4780 GST_TIME_ARGS (duration), out_offset, out_offset_end);
4782 ret = gst_pad_push (stream->pad, buf);
4784 /* mark as processed, we increment the frame and byte counters then
4785 * leave the while loop and return the GstFlowReturn */
4788 if (avi->segment.rate < 0) {
4789 if (timestamp > avi->segment.stop && ret == GST_FLOW_UNEXPECTED) {
4790 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4791 * we are at the end of the segment, so we just need to jump
4792 * back to the previous section. */
4793 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4798 /* move to next item */
4799 ret = gst_avi_demux_advance (avi, stream, ret);
4802 ret = gst_avi_demux_combine_flows (avi, stream, ret);
4803 } while (!processed);
4811 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
4812 ret = GST_FLOW_UNEXPECTED;
4817 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4818 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4819 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
4820 ret = GST_FLOW_UNEXPECTED;
4821 /* move to next stream */
4826 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
4827 " size=%" G_GUINT64_FORMAT, offset, size);
4832 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4833 ", only got %d/%" G_GUINT64_FORMAT " bytes (truncated file?)", offset,
4834 GST_BUFFER_SIZE (buf), size);
4835 gst_buffer_unref (buf);
4836 ret = GST_FLOW_UNEXPECTED;
4842 * Read data. If we have an index it delegates to
4843 * gst_avi_demux_process_next_entry().
4845 static GstFlowReturn
4846 gst_avi_demux_stream_data (GstAviDemux * avi)
4851 GstFlowReturn res = GST_FLOW_OK;
4852 GstFormat format = GST_FORMAT_TIME;
4854 if (G_UNLIKELY (avi->have_eos)) {
4855 /* Clean adapter, we're done */
4856 gst_adapter_clear (avi->adapter);
4857 return GST_FLOW_UNEXPECTED;
4860 if (G_UNLIKELY (avi->todrop)) {
4863 if ((drop = gst_adapter_available (avi->adapter))) {
4864 if (drop > avi->todrop)
4866 GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
4867 gst_adapter_flush (avi->adapter, drop);
4868 avi->todrop -= drop;
4869 avi->offset += drop;
4873 /* Iterate until need more data, so adapter won't grow too much */
4875 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4879 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4880 GST_FOURCC_ARGS (tag), size);
4882 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4883 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4884 GST_LOG ("Chunk ok");
4885 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4886 GST_DEBUG ("Found sub-index tag");
4887 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4888 /* accept 0 size buffer here */
4889 avi->abort_buffering = FALSE;
4890 GST_DEBUG (" skipping %d bytes for now", size);
4891 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4894 } else if (tag == GST_RIFF_TAG_RIFF) {
4895 /* RIFF tags can appear in ODML files, just jump over them */
4896 if (gst_adapter_available (avi->adapter) >= 12) {
4897 GST_DEBUG ("Found RIFF tag, skipping RIFF header");
4898 gst_adapter_flush (avi->adapter, 12);
4902 } else if (tag == GST_RIFF_TAG_idx1) {
4903 GST_DEBUG ("Found index tag");
4904 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4905 /* accept 0 size buffer here */
4906 avi->abort_buffering = FALSE;
4907 GST_DEBUG (" skipping %d bytes for now", size);
4908 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4911 } else if (tag == GST_RIFF_TAG_LIST) {
4912 /* movi chunks might be grouped in rec list */
4913 if (gst_adapter_available (avi->adapter) >= 12) {
4914 GST_DEBUG ("Found LIST tag, skipping LIST header");
4915 gst_adapter_flush (avi->adapter, 12);
4919 } else if (tag == GST_RIFF_TAG_JUNK || tag == GST_RIFF_TAG_JUNQ) {
4920 /* rec list might contain JUNK chunks */
4921 GST_DEBUG ("Found JUNK tag");
4922 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4923 /* accept 0 size buffer here */
4924 avi->abort_buffering = FALSE;
4925 GST_DEBUG (" skipping %d bytes for now", size);
4926 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4930 GST_DEBUG ("No more stream chunks, send EOS");
4931 avi->have_eos = TRUE;
4932 return GST_FLOW_UNEXPECTED;
4935 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4936 /* supposedly one hopes to catch a nicer chunk later on ... */
4937 /* FIXME ?? give up here rather than possibly ending up going
4938 * through the whole file */
4939 if (avi->abort_buffering) {
4940 avi->abort_buffering = FALSE;
4942 gst_adapter_flush (avi->adapter, 8);
4949 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4950 GST_FOURCC_ARGS (tag), size);
4952 stream_nr = CHUNKID_TO_STREAMNR (tag);
4954 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4956 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4957 stream_nr, GST_FOURCC_ARGS (tag));
4958 avi->offset += 8 + GST_ROUND_UP_2 (size);
4959 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4961 GstAviStream *stream;
4962 GstClockTime next_ts = 0;
4963 GstBuffer *buf = NULL;
4965 gboolean saw_desired_kf = stream_nr != avi->main_stream
4966 || avi->offset >= avi->seek_kf_offset;
4968 if (stream_nr == avi->main_stream && avi->offset == avi->seek_kf_offset) {
4969 GST_DEBUG_OBJECT (avi, "Desired keyframe reached");
4970 avi->seek_kf_offset = 0;
4973 if (saw_desired_kf) {
4974 gst_adapter_flush (avi->adapter, 8);
4977 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
4978 /* patch the size */
4979 GST_BUFFER_SIZE (buf) = size;
4984 GST_DEBUG_OBJECT (avi,
4985 "Desired keyframe not yet reached, flushing chunk");
4986 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4989 offset = avi->offset;
4990 avi->offset += 8 + GST_ROUND_UP_2 (size);
4992 stream = &avi->stream[stream_nr];
4994 /* set delay (if any)
4995 if (stream->strh->init_frames == stream->current_frame &&
4997 stream->delay = next_ts;
5000 /* parsing of corresponding header may have failed */
5001 if (G_UNLIKELY (!stream->pad)) {
5002 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
5003 GST_FOURCC_ARGS (tag));
5005 gst_buffer_unref (buf);
5007 /* get time of this buffer */
5008 gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
5009 if (G_UNLIKELY (format != GST_FORMAT_TIME))
5012 gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
5014 /* increment our positions */
5015 stream->current_entry++;
5016 stream->current_total += size;
5018 /* update current position in the segment */
5019 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
5021 if (saw_desired_kf && buf) {
5022 GstClockTime dur_ts = 0;
5024 /* invert the picture if needed */
5025 buf = gst_avi_demux_invert (stream, buf);
5027 gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
5028 if (G_UNLIKELY (format != GST_FORMAT_TIME))
5031 GST_BUFFER_TIMESTAMP (buf) = next_ts;
5032 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
5033 if (stream->strh->type == GST_RIFF_FCC_vids) {
5034 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
5035 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
5037 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
5038 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
5041 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
5042 GST_DEBUG_OBJECT (avi,
5043 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
5044 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
5045 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
5046 GST_TIME_ARGS (GST_BUFFER_DURATION (buf)),
5047 GST_BUFFER_OFFSET (buf), size, GST_PAD_NAME (stream->pad));
5049 /* mark discont when pending */
5050 if (G_UNLIKELY (stream->discont)) {
5051 GST_DEBUG_OBJECT (avi, "Setting DISCONT");
5052 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
5053 stream->discont = FALSE;
5055 res = gst_pad_push (stream->pad, buf);
5059 res = gst_avi_demux_combine_flows (avi, stream, res);
5060 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5061 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
5075 GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
5076 gst_format_get_name (format));
5077 res = GST_FLOW_ERROR;
5083 * Send pending tags.
5086 push_tag_lists (GstAviDemux * avi)
5094 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
5096 for (i = 0; i < avi->num_streams; i++) {
5097 GstAviStream *stream = &avi->stream[i];
5098 GstPad *pad = stream->pad;
5100 tags = stream->taglist;
5103 GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
5105 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (avi), pad, tags);
5106 stream->taglist = NULL;
5110 if (!(tags = avi->globaltags))
5111 tags = gst_tag_list_new ();
5113 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
5114 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
5116 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
5117 gst_element_found_tags (GST_ELEMENT_CAST (avi), tags);
5118 avi->globaltags = NULL;
5119 avi->got_tags = FALSE;
5123 gst_avi_demux_loop (GstPad * pad)
5126 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5128 switch (avi->state) {
5129 case GST_AVI_DEMUX_START:
5130 res = gst_avi_demux_stream_init_pull (avi);
5131 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5132 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5135 avi->state = GST_AVI_DEMUX_HEADER;
5137 case GST_AVI_DEMUX_HEADER:
5138 res = gst_avi_demux_stream_header_pull (avi);
5139 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5140 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5143 avi->state = GST_AVI_DEMUX_MOVI;
5145 case GST_AVI_DEMUX_MOVI:
5146 if (G_UNLIKELY (avi->close_seg_event)) {
5147 gst_avi_demux_push_event (avi, avi->close_seg_event);
5148 avi->close_seg_event = NULL;
5150 if (G_UNLIKELY (avi->seg_event)) {
5151 gst_avi_demux_push_event (avi, avi->seg_event);
5152 avi->seg_event = NULL;
5154 if (G_UNLIKELY (avi->got_tags)) {
5155 push_tag_lists (avi);
5157 /* process each index entry in turn */
5158 res = gst_avi_demux_loop_data (avi);
5160 /* pause when error */
5161 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5162 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
5167 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
5168 res = GST_FLOW_ERROR;
5177 gboolean push_eos = FALSE;
5178 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
5179 avi->segment_running = FALSE;
5180 gst_pad_pause_task (avi->sinkpad);
5183 if (res == GST_FLOW_UNEXPECTED) {
5184 /* handle end-of-stream/segment */
5185 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
5188 if ((stop = avi->segment.stop) == -1)
5189 stop = avi->segment.duration;
5191 GST_INFO_OBJECT (avi, "sending segment_done");
5193 gst_element_post_message
5194 (GST_ELEMENT_CAST (avi),
5195 gst_message_new_segment_done (GST_OBJECT_CAST (avi),
5196 GST_FORMAT_TIME, stop));
5200 } else if (res == GST_FLOW_NOT_LINKED || res < GST_FLOW_UNEXPECTED) {
5201 /* for fatal errors we post an error message, wrong-state is
5202 * not fatal because it happens due to flushes and only means
5203 * that we should stop now. */
5204 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
5205 (_("Internal data stream error.")),
5206 ("streaming stopped, reason %s", gst_flow_get_name (res)));
5210 GST_INFO_OBJECT (avi, "sending eos");
5211 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
5212 (res == GST_FLOW_UNEXPECTED)) {
5213 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
5214 (NULL), ("got eos but no streams (yet)"));
5221 static GstFlowReturn
5222 gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
5225 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5228 if (GST_BUFFER_IS_DISCONT (buf)) {
5229 GST_DEBUG_OBJECT (avi, "got DISCONT");
5230 gst_adapter_clear (avi->adapter);
5231 /* mark all streams DISCONT */
5232 for (i = 0; i < avi->num_streams; i++)
5233 avi->stream[i].discont = TRUE;
5236 GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
5237 gst_adapter_push (avi->adapter, buf);
5239 switch (avi->state) {
5240 case GST_AVI_DEMUX_START:
5241 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
5242 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5246 case GST_AVI_DEMUX_HEADER:
5247 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
5248 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5252 case GST_AVI_DEMUX_MOVI:
5253 if (G_UNLIKELY (avi->close_seg_event)) {
5254 gst_avi_demux_push_event (avi, avi->close_seg_event);
5255 avi->close_seg_event = NULL;
5257 if (G_UNLIKELY (avi->seg_event)) {
5258 gst_avi_demux_push_event (avi, avi->seg_event);
5259 avi->seg_event = NULL;
5261 if (G_UNLIKELY (avi->got_tags)) {
5262 push_tag_lists (avi);
5264 res = gst_avi_demux_stream_data (avi);
5266 case GST_AVI_DEMUX_SEEK:
5272 /* obtain and parse indexes */
5273 if (avi->stream[0].indexes && !gst_avi_demux_read_subindexes_push (avi))
5274 /* seek in subindex read function failed */
5277 if (!avi->stream[0].indexes && !avi->have_index
5278 && avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
5279 gst_avi_demux_stream_index_push (avi);
5281 if (avi->have_index) {
5282 /* use the indexes now to construct nice durations */
5283 gst_avi_demux_calculate_durations_from_index (avi);
5285 /* still parsing indexes */
5289 GST_OBJECT_LOCK (avi);
5290 event = avi->seek_event;
5291 avi->seek_event = NULL;
5292 GST_OBJECT_UNLOCK (avi);
5294 /* calculate and perform seek */
5295 if (!avi_demux_handle_seek_push (avi, avi->sinkpad, event))
5298 gst_event_unref (event);
5299 avi->state = GST_AVI_DEMUX_MOVI;
5303 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
5304 ("Illegal internal state"));
5305 res = GST_FLOW_ERROR;
5309 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
5310 gst_flow_get_name (res));
5312 if (G_UNLIKELY (avi->abort_buffering))
5313 goto abort_buffering;
5320 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("failed to read indexes"));
5321 return GST_FLOW_ERROR;
5325 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("push mode seek failed"));
5326 return GST_FLOW_ERROR;
5330 avi->abort_buffering = FALSE;
5331 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
5332 return GST_FLOW_ERROR;
5337 gst_avi_demux_sink_activate (GstPad * sinkpad)
5339 if (gst_pad_check_pull_range (sinkpad)) {
5340 GST_DEBUG ("going to pull mode");
5341 return gst_pad_activate_pull (sinkpad, TRUE);
5343 GST_DEBUG ("going to push (streaming) mode");
5344 return gst_pad_activate_push (sinkpad, TRUE);
5349 gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
5351 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
5354 avi->segment_running = TRUE;
5355 avi->streaming = FALSE;
5356 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
5359 avi->segment_running = FALSE;
5360 return gst_pad_stop_task (sinkpad);
5365 gst_avi_demux_activate_push (GstPad * pad, gboolean active)
5367 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
5370 GST_DEBUG ("avi: activating push/chain function");
5371 avi->streaming = TRUE;
5373 /* create index for some push based seeking if not provided */
5374 GST_OBJECT_LOCK (avi);
5375 if (!avi->element_index) {
5376 GST_DEBUG_OBJECT (avi, "creating index");
5377 avi->element_index = gst_index_factory_make ("memindex");
5379 GST_OBJECT_UNLOCK (avi);
5380 /* object lock might be taken again */
5381 gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (avi),
5385 GST_DEBUG ("avi: deactivating push/chain function");
5392 gst_avi_demux_set_index (GstElement * element, GstIndex * index)
5394 GstAviDemux *avi = GST_AVI_DEMUX (element);
5396 GST_OBJECT_LOCK (avi);
5397 if (avi->element_index)
5398 gst_object_unref (avi->element_index);
5400 avi->element_index = gst_object_ref (index);
5402 avi->element_index = NULL;
5404 GST_OBJECT_UNLOCK (avi);
5405 /* object lock might be taken again */
5407 gst_index_get_writer_id (index, GST_OBJECT_CAST (element), &avi->index_id);
5408 GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
5412 gst_avi_demux_get_index (GstElement * element)
5414 GstIndex *result = NULL;
5415 GstAviDemux *avi = GST_AVI_DEMUX (element);
5417 GST_OBJECT_LOCK (avi);
5418 if (avi->element_index)
5419 result = gst_object_ref (avi->element_index);
5420 GST_OBJECT_UNLOCK (avi);
5422 GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
5427 static GstStateChangeReturn
5428 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
5430 GstStateChangeReturn ret;
5431 GstAviDemux *avi = GST_AVI_DEMUX (element);
5433 switch (transition) {
5434 case GST_STATE_CHANGE_READY_TO_PAUSED:
5435 avi->streaming = FALSE;
5436 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
5442 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
5443 if (ret == GST_STATE_CHANGE_FAILURE)
5446 switch (transition) {
5447 case GST_STATE_CHANGE_PAUSED_TO_READY:
5448 avi->have_index = FALSE;
5449 gst_avi_demux_reset (avi);