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 indexes = g_new (guint64, num + 1);
1274 for (i = 0; i < num; i++) {
1275 if (size < 24 + bpe * (i + 1))
1277 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1278 GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
1280 indexes[i] = GST_BUFFER_OFFSET_NONE;
1281 *_indexes = indexes;
1283 gst_buffer_unref (buf);
1290 GST_ERROR_OBJECT (avi,
1291 "Not enough data to parse superindex (%d available, 24 needed)", size);
1293 gst_buffer_unref (buf);
1298 /* add an entry to the index of a stream. @num should be an estimate of the
1299 * total amount of index entries for all streams and is used to dynamically
1300 * allocate memory for the index entries. */
1301 static inline gboolean
1302 gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
1303 guint num, GstAviIndexEntry * entry)
1305 /* ensure index memory */
1306 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
1307 guint idx_max = stream->idx_max;
1308 GstAviIndexEntry *new_idx;
1310 /* we need to make some more room */
1312 /* initial size guess, assume each stream has an equal amount of entries,
1313 * overshoot with at least 8K */
1314 idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
1316 idx_max += 8192 / sizeof (GstAviIndexEntry);
1317 GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
1318 stream->idx_max, idx_max);
1320 new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
1321 /* out of memory, if this fails stream->index is untouched. */
1322 if (G_UNLIKELY (!new_idx))
1325 stream->index = new_idx;
1326 stream->idx_max = idx_max;
1329 /* update entry total and stream stats. The entry total can be converted to
1330 * the timestamp of the entry easily. */
1331 if (stream->strh->type == GST_RIFF_FCC_auds) {
1334 if (stream->is_vbr) {
1335 entry->total = stream->total_blocks;
1337 entry->total = stream->total_bytes;
1339 blockalign = stream->strf.auds->blockalign;
1341 stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
1343 stream->total_blocks++;
1345 if (stream->is_vbr) {
1346 entry->total = stream->idx_n;
1348 entry->total = stream->total_bytes;
1351 stream->total_bytes += entry->size;
1352 if (ENTRY_IS_KEYFRAME (entry))
1353 stream->n_keyframes++;
1356 GST_LOG_OBJECT (avi,
1357 "Adding stream %u, index entry %d, kf %d, size %u "
1358 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
1359 stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
1361 stream->index[stream->idx_n++] = *entry;
1366 /* given @entry_n in @stream, calculate info such as timestamps and
1367 * offsets for the entry. */
1369 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1370 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1371 guint64 * offset, guint64 * offset_end)
1373 GstAviIndexEntry *entry;
1375 entry = &stream->index[entry_n];
1377 if (stream->is_vbr) {
1378 /* VBR stream next timestamp */
1379 if (stream->strh->type == GST_RIFF_FCC_auds) {
1382 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
1384 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1389 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
1391 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1394 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
1395 /* constant rate stream */
1398 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
1400 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
1401 entry->total + entry->size);
1403 if (stream->strh->type == GST_RIFF_FCC_vids) {
1404 /* video offsets are the frame number */
1408 *offset_end = entry_n + 1;
1410 /* no offsets for audio */
1418 /* collect and debug stats about the indexes for all streams.
1419 * This method is also responsible for filling in the stream duration
1420 * as measured by the amount of index entries.
1422 * Returns TRUE if the index is not empty, else FALSE */
1424 gst_avi_demux_do_index_stats (GstAviDemux * avi)
1426 guint total_idx = 0;
1428 #ifndef GST_DISABLE_GST_DEBUG
1429 guint total_max = 0;
1432 /* get stream stats now */
1433 for (i = 0; i < avi->num_streams; i++) {
1434 GstAviStream *stream;
1436 if (G_UNLIKELY (!(stream = &avi->stream[i])))
1438 if (G_UNLIKELY (!stream->strh))
1440 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
1443 /* we interested in the end_ts of the last entry, which is the total
1444 * duration of this stream */
1445 gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
1446 NULL, &stream->idx_duration, NULL, NULL);
1448 total_idx += stream->idx_n;
1449 #ifndef GST_DISABLE_GST_DEBUG
1450 total_max += stream->idx_max;
1452 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
1453 "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
1454 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
1455 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
1456 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
1457 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
1459 total_idx *= sizeof (GstAviIndexEntry);
1460 #ifndef GST_DISABLE_GST_DEBUG
1461 total_max *= sizeof (GstAviIndexEntry);
1463 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
1464 total_max, total_idx, total_max - total_idx);
1466 if (total_idx == 0) {
1467 GST_WARNING_OBJECT (avi, "Index is empty !");
1474 * gst_avi_demux_parse_subindex:
1476 * @buf: input data to use for parsing.
1477 * @stream: stream context.
1478 * @entries_list: a list (returned by the function) containing all the
1479 * indexes parsed in this specific subindex. The first
1480 * entry is also a pointer to allocated memory that needs
1481 * to be free´ed. May be NULL if no supported indexes were
1484 * Reads superindex (openDML-2 spec stuff) from the provided data.
1485 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1487 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1488 * throw an error, caller should bail out asap.
1491 gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
1503 size = GST_BUFFER_SIZE (buf);
1509 data = GST_BUFFER_DATA (buf);
1511 /* We don't support index-data yet */
1513 goto not_implemented;
1515 /* check type of index. The opendml2 specs state that
1516 * there should be 4 dwords per array entry. Type can be
1517 * either frame or field (and we don't care). */
1518 bpe = (data[2] & 0x01) ? 12 : 8;
1519 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1520 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1521 GST_WARNING_OBJECT (avi,
1522 "Superindex for stream %d has unexpected "
1523 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1524 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1525 bpe = GST_READ_UINT16_LE (data) * 4;
1527 num = GST_READ_UINT32_LE (&data[4]);
1528 baseoff = GST_READ_UINT64_LE (&data[12]);
1530 /* If there's nothing, just return ! */
1534 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1536 for (i = 0; i < num; i++) {
1537 GstAviIndexEntry entry;
1539 if (size < 24 + bpe * (i + 1))
1542 /* fill in offset and size. offset contains the keyframe flag in the
1544 entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1545 entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1547 if (stream->strh->type == GST_RIFF_FCC_auds) {
1548 /* all audio frames are keyframes */
1549 ENTRY_SET_KEYFRAME (&entry);
1551 /* else read flags */
1552 entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
1554 entry.size &= ~0x80000000;
1557 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
1560 gst_buffer_unref (buf);
1567 GST_ERROR_OBJECT (avi,
1568 "Not enough data to parse subindex (%d available, 24 needed)", size);
1569 gst_buffer_unref (buf);
1570 return TRUE; /* continue */
1574 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1575 ("Subindex-is-data is not implemented"));
1576 gst_buffer_unref (buf);
1581 GST_DEBUG_OBJECT (avi, "the index is empty");
1582 gst_buffer_unref (buf);
1587 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1588 ("Cannot allocate memory for %u*%u=%u bytes",
1589 (guint) sizeof (GstAviIndexEntry), num,
1590 (guint) sizeof (GstAviIndexEntry) * num));
1591 gst_buffer_unref (buf);
1597 * Create and push a flushing seek event upstream
1600 perform_seek_to_offset (GstAviDemux * demux, guint64 offset)
1605 GST_DEBUG_OBJECT (demux, "Seeking to %" G_GUINT64_FORMAT, offset);
1608 gst_event_new_seek (1.0, GST_FORMAT_BYTES,
1609 GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
1610 GST_SEEK_TYPE_NONE, -1);
1612 res = gst_pad_push_event (demux->sinkpad, event);
1615 demux->offset = offset;
1620 * Read AVI index when streaming
1623 gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
1625 guint32 tag = 0, size;
1626 GstBuffer *buf = NULL;
1629 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1631 if (avi->odml_subidxs[avi->odml_subidx] != avi->offset)
1634 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1637 /* this is the ODML chunk we expect */
1638 odml_stream = avi->odml_stream;
1640 if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + odml_stream / 10,
1641 '0' + odml_stream % 10)) &&
1642 (tag != GST_MAKE_FOURCC ('0' + odml_stream / 10,
1643 '0' + odml_stream % 10, 'i', 'x'))) {
1644 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1645 GST_FOURCC_ARGS (tag));
1649 avi->offset += 8 + GST_ROUND_UP_2 (size);
1650 /* flush chunk header so we get just the 'size' payload data */
1651 gst_adapter_flush (avi->adapter, 8);
1652 buf = gst_adapter_take_buffer (avi->adapter, size);
1654 if (!gst_avi_demux_parse_subindex (avi, &avi->stream[odml_stream], buf))
1657 /* we parsed the index, go to next subindex */
1660 if (avi->odml_subidxs[avi->odml_subidx] == GST_BUFFER_OFFSET_NONE) {
1661 /* we reached the end of the indexes for this stream, move to the next
1662 * stream to handle the first index */
1664 avi->odml_subidx = 0;
1666 if (avi->odml_stream < avi->num_streams) {
1667 /* there are more indexes */
1668 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
1670 /* we're done, get stream stats now */
1671 avi->have_index = gst_avi_demux_do_index_stats (avi);
1677 /* seek to next index */
1678 return perform_seek_to_offset (avi, avi->odml_subidxs[avi->odml_subidx]);
1685 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
1691 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1693 for (n = 0; n < avi->num_streams; n++) {
1694 GstAviStream *stream = &avi->stream[n];
1696 if (stream->indexes == NULL)
1699 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1700 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
1701 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1703 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1704 '0' + stream->num % 10)) &&
1705 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1706 '0' + stream->num % 10, 'i', 'x'))) {
1707 /* Some ODML files (created by god knows what muxer) have a ##ix format
1708 * instead of the 'official' ix##. They are still valid though. */
1709 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1710 GST_FOURCC_ARGS (tag));
1711 gst_buffer_unref (buf);
1715 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1719 g_free (stream->indexes);
1720 stream->indexes = NULL;
1722 /* get stream stats now */
1723 avi->have_index = gst_avi_demux_do_index_stats (avi);
1727 * gst_avi_demux_riff_parse_vprp:
1728 * @element: caller element (used for debugging/error).
1729 * @buf: input data to be used for parsing, stripped from header.
1730 * @vprp: a pointer (returned by this function) to a filled-in vprp
1731 * structure. Caller should free it.
1733 * Parses a video stream´s vprp. This function takes ownership of @buf.
1735 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1736 * should be skipped on error, but it is not fatal.
1739 gst_avi_demux_riff_parse_vprp (GstElement * element,
1740 GstBuffer * buf, gst_riff_vprp ** _vprp)
1742 gst_riff_vprp *vprp;
1745 g_return_val_if_fail (buf != NULL, FALSE);
1746 g_return_val_if_fail (_vprp != NULL, FALSE);
1748 if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1751 vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1753 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1754 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1755 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1756 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1757 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1758 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1759 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1760 vprp->width = GUINT32_FROM_LE (vprp->width);
1761 vprp->height = GUINT32_FROM_LE (vprp->height);
1762 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1766 /* calculate fields based on size */
1767 k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
1769 if (vprp->fields > k) {
1770 GST_WARNING_OBJECT (element,
1771 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1774 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1775 GST_WARNING_OBJECT (element,
1776 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1777 GST_RIFF_VPRP_VIDEO_FIELDS);
1778 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1780 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1781 for (k = 0; k < vprp->fields; k++) {
1782 gst_riff_vprp_video_field_desc *fd;
1784 fd = &vprp->field_info[k];
1785 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1786 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1787 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1788 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1789 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1790 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1791 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1792 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1797 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1798 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1799 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1800 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1801 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1802 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1803 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1804 vprp->aspect & 0xffff);
1805 GST_INFO_OBJECT (element, " width %d", vprp->width);
1806 GST_INFO_OBJECT (element, " height %d", vprp->height);
1807 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1808 for (k = 0; k < vprp->fields; k++) {
1809 gst_riff_vprp_video_field_desc *fd;
1811 fd = &(vprp->field_info[k]);
1812 GST_INFO_OBJECT (element, " field %u description:", k);
1813 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1814 fd->compressed_bm_height);
1815 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1816 fd->compressed_bm_width);
1817 GST_INFO_OBJECT (element, " valid_bm_height %d",
1818 fd->valid_bm_height);
1819 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1820 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1821 fd->valid_bm_x_offset);
1822 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1823 fd->valid_bm_y_offset);
1824 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1825 fd->video_x_t_offset);
1826 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1829 gst_buffer_unref (buf);
1838 GST_ERROR_OBJECT (element,
1839 "Too small vprp (%d available, at least %d needed)",
1840 GST_BUFFER_SIZE (buf),
1841 (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1842 gst_buffer_unref (buf);
1848 gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
1852 GST_DEBUG_OBJECT (avi, "force : %d", force);
1854 for (i = 0; i < avi->num_streams; i++) {
1855 GstAviStream *stream = &avi->stream[i];
1857 if (force || stream->idx_n != 0) {
1858 GST_LOG_OBJECT (avi, "Added pad %s with caps %" GST_PTR_FORMAT,
1859 GST_PAD_NAME (stream->pad), GST_PAD_CAPS (stream->pad));
1860 gst_element_add_pad ((GstElement *) avi, stream->pad);
1861 stream->exposed = TRUE;
1862 if (avi->main_stream == -1)
1863 avi->main_stream = i;
1865 GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
1867 gst_avi_demux_reset_stream (avi, stream);
1873 * gst_avi_demux_parse_stream:
1874 * @avi: calling element (used for debugging/errors).
1875 * @buf: input buffer used to parse the stream.
1877 * Parses all subchunks in a strl chunk (which defines a single
1878 * stream). Discards the buffer after use. This function will
1879 * increment the stream counter internally.
1881 * Returns: whether the stream was identified successfully.
1882 * Errors are not fatal. It does indicate the stream
1886 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1888 GstAviStream *stream;
1889 GstElementClass *klass;
1890 GstPadTemplate *templ;
1891 GstBuffer *sub = NULL;
1894 gchar *codec_name = NULL, *padname = NULL;
1895 const gchar *tag_name;
1896 GstCaps *caps = NULL;
1898 GstElement *element;
1899 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1900 gst_riff_vprp *vprp = NULL;
1902 element = GST_ELEMENT_CAST (avi);
1904 GST_DEBUG_OBJECT (avi, "Parsing stream");
1906 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1907 GST_WARNING_OBJECT (avi,
1908 "maximum no of streams (%d) exceeded, ignoring stream",
1909 GST_AVI_DEMUX_MAX_STREAMS);
1910 gst_buffer_unref (buf);
1911 /* not a fatal error, let's say */
1915 stream = &avi->stream[avi->num_streams];
1917 /* initial settings */
1918 stream->idx_duration = GST_CLOCK_TIME_NONE;
1919 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1920 stream->duration = GST_CLOCK_TIME_NONE;
1922 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1923 /* sub can be NULL if the chunk is empty */
1925 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1926 GST_FOURCC_ARGS (tag));
1930 case GST_RIFF_TAG_strh:
1932 gst_riff_strh *strh;
1935 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1938 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1939 /* ownership given away */
1941 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1945 strh = stream->strh;
1946 /* sanity check; stream header frame rate matches global header
1948 if (stream->strh->type == GST_RIFF_FCC_vids) {
1950 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1952 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1953 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1954 "frame duration = %d ms", strh->rate, strh->scale,
1955 (gint) (s_dur / GST_MSECOND));
1956 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1957 strh->rate = GST_SECOND / GST_USECOND;
1958 strh->scale = h_dur / GST_USECOND;
1959 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1960 strh->rate, strh->scale);
1963 /* determine duration as indicated by header */
1964 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1965 strh->scale, GST_SECOND, (guint64) strh->rate);
1966 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1967 GST_TIME_ARGS (stream->hdr_duration));
1968 if (stream->hdr_duration == 0)
1969 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1974 case GST_RIFF_TAG_strf:
1976 gboolean res = FALSE;
1979 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
1983 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
1986 switch (stream->strh->type) {
1987 case GST_RIFF_FCC_vids:
1988 stream->is_vbr = TRUE;
1989 res = gst_riff_parse_strf_vids (element, sub,
1990 &stream->strf.vids, &stream->extradata);
1992 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
1994 case GST_RIFF_FCC_auds:
1996 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
1997 &stream->extradata);
1998 stream->is_vbr = (stream->strh->samplesize == 0)
1999 && stream->strh->scale > 1
2000 && stream->strf.auds->blockalign != 1;
2002 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
2003 stream->is_vbr, res);
2004 /* we need these or we have no way to come up with timestamps */
2005 if ((!stream->is_vbr && !stream->strf.auds->av_bps) ||
2006 (stream->is_vbr && (!stream->strh->scale ||
2007 !stream->strh->rate))) {
2008 GST_WARNING_OBJECT (element,
2009 "invalid audio header, ignoring stream");
2012 /* some more sanity checks */
2013 if (stream->is_vbr) {
2014 if (stream->strf.auds->blockalign <= 4) {
2015 /* that would mean (too) many frames per chunk,
2016 * so not likely set as expected */
2017 GST_DEBUG_OBJECT (element,
2018 "suspicious blockalign %d for VBR audio; "
2019 "overriding to 1 frame per chunk",
2020 stream->strf.auds->blockalign);
2021 /* this should top any likely value */
2022 stream->strf.auds->blockalign = (1 << 12);
2026 case GST_RIFF_FCC_iavs:
2027 stream->is_vbr = TRUE;
2028 res = gst_riff_parse_strf_iavs (element, sub,
2029 &stream->strf.iavs, &stream->extradata);
2031 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
2033 case GST_RIFF_FCC_txts:
2034 /* nothing to parse here */
2035 stream->is_vbr = (stream->strh->samplesize == 0)
2036 && (stream->strh->scale > 1);
2040 GST_ERROR_OBJECT (avi,
2041 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
2042 GST_FOURCC_ARGS (stream->strh->type));
2046 gst_buffer_unref (sub);
2054 case GST_RIFF_TAG_vprp:
2057 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
2061 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
2065 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
2069 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
2070 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
2071 /* not considered fatal */
2079 case GST_RIFF_TAG_strd:
2080 if (stream->initdata)
2081 gst_buffer_unref (stream->initdata);
2082 stream->initdata = sub;
2085 case GST_RIFF_TAG_strn:
2086 g_free (stream->name);
2089 g_strndup ((gchar *) GST_BUFFER_DATA (sub),
2090 (gsize) GST_BUFFER_SIZE (sub));
2091 gst_buffer_unref (sub);
2094 stream->name = g_strdup ("");
2096 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
2099 gst_avi_demux_parse_idit (avi, sub);
2102 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
2103 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
2104 '0' + avi->num_streams % 10)) {
2105 g_free (stream->indexes);
2106 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
2107 stream->superindex = TRUE;
2111 GST_WARNING_OBJECT (avi,
2112 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
2113 GST_FOURCC_ARGS (tag));
2115 case GST_RIFF_TAG_JUNQ:
2116 case GST_RIFF_TAG_JUNK:
2120 gst_buffer_unref (sub);
2126 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
2131 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
2135 /* get class to figure out the template */
2136 klass = GST_ELEMENT_GET_CLASS (avi);
2138 /* we now have all info, let´s set up a pad and a caps and be done */
2139 /* create stream name + pad */
2140 switch (stream->strh->type) {
2141 case GST_RIFF_FCC_vids:{
2144 fourcc = (stream->strf.vids->compression) ?
2145 stream->strf.vids->compression : stream->strh->fcc_handler;
2146 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
2147 templ = gst_element_class_get_pad_template (klass, "video_%02d");
2148 caps = gst_riff_create_video_caps (fourcc, stream->strh,
2149 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
2151 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2152 GST_TYPE_FOURCC, fourcc, NULL);
2153 } else if (got_vprp && vprp) {
2154 guint32 aspect_n, aspect_d;
2157 aspect_n = vprp->aspect >> 16;
2158 aspect_d = vprp->aspect & 0xffff;
2159 /* calculate the pixel aspect ratio using w/h and aspect ratio */
2160 n = aspect_n * stream->strf.vids->height;
2161 d = aspect_d * stream->strf.vids->width;
2163 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
2165 /* very local, not needed elsewhere */
2169 tag_name = GST_TAG_VIDEO_CODEC;
2170 avi->num_v_streams++;
2173 case GST_RIFF_FCC_auds:{
2174 padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
2175 templ = gst_element_class_get_pad_template (klass, "audio_%02d");
2176 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
2177 stream->strh, stream->strf.auds, stream->extradata,
2178 stream->initdata, &codec_name);
2180 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
2181 G_TYPE_INT, stream->strf.auds->format, NULL);
2183 tag_name = GST_TAG_AUDIO_CODEC;
2184 avi->num_a_streams++;
2187 case GST_RIFF_FCC_iavs:{
2188 guint32 fourcc = stream->strh->fcc_handler;
2190 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
2191 templ = gst_element_class_get_pad_template (klass, "video_%02d");
2192 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
2193 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
2195 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2196 GST_TYPE_FOURCC, fourcc, NULL);
2198 tag_name = GST_TAG_VIDEO_CODEC;
2199 avi->num_v_streams++;
2202 case GST_RIFF_FCC_txts:{
2203 padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
2204 templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
2205 caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
2207 avi->num_t_streams++;
2211 g_assert_not_reached ();
2214 /* no caps means no stream */
2216 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
2220 GST_DEBUG_OBJECT (element, "codec-name=%s",
2221 (codec_name ? codec_name : "NULL"));
2222 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
2224 /* set proper settings and add it */
2226 gst_object_unref (stream->pad);
2227 pad = stream->pad = gst_pad_new_from_template (templ, padname);
2230 gst_pad_use_fixed_caps (pad);
2232 gst_pad_set_formats_function (pad,
2233 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
2234 gst_pad_set_event_mask_function (pad,
2235 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
2237 gst_pad_set_event_function (pad,
2238 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
2239 gst_pad_set_query_type_function (pad,
2240 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
2241 gst_pad_set_query_function (pad,
2242 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
2244 gst_pad_set_convert_function (pad,
2245 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
2248 if (avi->element_index)
2249 gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (stream->pad),
2252 stream->num = avi->num_streams;
2254 stream->start_entry = 0;
2255 stream->step_entry = 0;
2256 stream->stop_entry = 0;
2258 stream->current_entry = -1;
2259 stream->current_total = 0;
2261 stream->last_flow = GST_FLOW_OK;
2262 stream->discont = TRUE;
2264 stream->total_bytes = 0;
2265 stream->total_blocks = 0;
2266 stream->n_keyframes = 0;
2269 stream->idx_max = 0;
2271 gst_pad_set_element_private (pad, stream);
2274 gst_pad_set_caps (pad, caps);
2275 gst_pad_set_active (pad, TRUE);
2276 gst_caps_unref (caps);
2280 if (!stream->taglist)
2281 stream->taglist = gst_tag_list_new ();
2283 avi->got_tags = TRUE;
2285 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
2287 g_free (codec_name);
2290 gst_buffer_unref (buf);
2297 /* unref any mem that may be in use */
2299 gst_buffer_unref (buf);
2301 gst_buffer_unref (sub);
2303 g_free (codec_name);
2304 gst_avi_demux_reset_stream (avi, stream);
2311 * gst_avi_demux_parse_odml:
2312 * @avi: calling element (used for debug/error).
2313 * @buf: input buffer to be used for parsing.
2315 * Read an openDML-2.0 extension header. Fills in the frame number
2316 * in the avi demuxer object when reading succeeds.
2319 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
2323 GstBuffer *sub = NULL;
2325 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2328 case GST_RIFF_TAG_dmlh:{
2329 gst_riff_dmlh dmlh, *_dmlh;
2332 /* sub == NULL is possible and means an empty buffer */
2333 size = sub ? GST_BUFFER_SIZE (sub) : 0;
2336 if (size < sizeof (gst_riff_dmlh)) {
2337 GST_ERROR_OBJECT (avi,
2338 "DMLH entry is too small (%d bytes, %d needed)",
2339 size, (int) sizeof (gst_riff_dmlh));
2342 _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
2343 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
2345 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
2348 avi->avih->tot_frames = dmlh.totalframes;
2353 GST_WARNING_OBJECT (avi,
2354 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
2355 GST_FOURCC_ARGS (tag));
2357 case GST_RIFF_TAG_JUNQ:
2358 case GST_RIFF_TAG_JUNK:
2360 /* skip and move to next chunk */
2362 gst_buffer_unref (sub);
2369 gst_buffer_unref (buf);
2374 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
2376 return stream->idx_n;
2379 /* find a previous entry in the index with the given flags */
2381 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
2382 guint last, gboolean keyframe)
2384 GstAviIndexEntry *entry;
2387 for (i = last; i > 0; i--) {
2388 entry = &stream->index[i - 1];
2389 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2397 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
2398 guint last, gboolean keyframe)
2400 GstAviIndexEntry *entry;
2403 for (i = last + 1; i < stream->idx_n; i++) {
2404 entry = &stream->index[i];
2405 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2409 return stream->idx_n - 1;
2413 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
2415 if (entry->total < *total)
2417 else if (entry->total > *total)
2423 * gst_avi_demux_index_for_time:
2425 * @stream: the stream
2426 * @time: a time position
2428 * Finds the index entry which time is less or equal than the requested time.
2429 * Try to avoid binary search when we can convert the time to an index
2430 * position directly (for example for video frames with a fixed duration).
2432 * Returns: the found position in the index.
2435 gst_avi_demux_index_for_time (GstAviDemux * avi,
2436 GstAviStream * stream, guint64 time)
2441 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
2443 /* easy (and common) cases */
2444 if (time == 0 || stream->idx_n == 0)
2446 if (time >= stream->idx_duration)
2447 return stream->idx_n - 1;
2449 /* figure out where we need to go. For that we convert the time to an
2450 * index entry or we convert it to a total and then do a binary search. */
2451 if (stream->is_vbr) {
2452 /* VBR stream next timestamp */
2453 if (stream->strh->type == GST_RIFF_FCC_auds) {
2454 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
2456 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
2459 /* constant rate stream */
2460 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
2464 GstAviIndexEntry *entry;
2466 /* no index, find index with binary search on total */
2467 GST_LOG_OBJECT (avi, "binary search for entry with total %"
2468 G_GUINT64_FORMAT, total);
2470 entry = gst_util_array_binary_search (stream->index,
2471 stream->idx_n, sizeof (GstAviIndexEntry),
2472 (GCompareDataFunc) gst_avi_demux_index_entry_search,
2473 GST_SEARCH_MODE_BEFORE, &total, NULL);
2475 if (entry == NULL) {
2476 GST_LOG_OBJECT (avi, "not found, assume index 0");
2479 index = entry - stream->index;
2480 GST_LOG_OBJECT (avi, "found at %u", index);
2483 GST_LOG_OBJECT (avi, "converted time to index %u", index);
2489 static inline GstAviStream *
2490 gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
2493 GstAviStream *stream;
2495 /* get the stream for this entry */
2496 stream_nr = CHUNKID_TO_STREAMNR (id);
2497 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2498 GST_WARNING_OBJECT (avi, "invalid stream nr %d", stream_nr);
2501 stream = &avi->stream[stream_nr];
2502 if (G_UNLIKELY (!stream->strh)) {
2503 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2510 * gst_avi_demux_parse_index:
2511 * @avi: calling element (used for debugging/errors).
2512 * @buf: buffer containing the full index.
2514 * Read index entries from the provided buffer.
2515 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2518 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2524 gst_riff_index_entry *index;
2526 GstAviStream *stream;
2527 GstAviIndexEntry entry;
2533 data = GST_BUFFER_DATA (buf);
2534 size = GST_BUFFER_SIZE (buf);
2536 stamp = gst_util_get_timestamp ();
2538 /* see how many items in the index */
2539 num = size / sizeof (gst_riff_index_entry);
2543 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2545 index = (gst_riff_index_entry *) data;
2546 pos_before = avi->offset;
2548 /* figure out if the index is 0 based or relative to the MOVI start */
2549 entry.offset = GST_READ_UINT32_LE (&index[0].offset);
2550 if (entry.offset < avi->offset) {
2551 avi->index_offset = avi->offset + 8;
2552 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2554 avi->index_offset = 0;
2555 GST_DEBUG ("index is 0 based");
2558 for (i = 0, n = 0; i < num; i++) {
2559 id = GST_READ_UINT32_LE (&index[i].id);
2560 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2562 /* some sanity checks */
2563 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2564 (entry.offset == 0 && n > 0)))
2567 /* get the stream for this entry */
2568 stream = gst_avi_demux_stream_for_id (avi, id);
2569 if (G_UNLIKELY (!stream))
2572 /* handle offset and size */
2573 entry.offset += avi->index_offset + 8;
2574 entry.size = GST_READ_UINT32_LE (&index[i].size);
2577 if (stream->strh->type == GST_RIFF_FCC_auds) {
2578 /* all audio frames are keyframes */
2579 ENTRY_SET_KEYFRAME (&entry);
2582 /* else read flags */
2583 flags = GST_READ_UINT32_LE (&index[i].flags);
2584 if (flags & GST_RIFF_IF_KEYFRAME) {
2585 ENTRY_SET_KEYFRAME (&entry);
2587 ENTRY_UNSET_KEYFRAME (&entry);
2592 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2597 gst_buffer_unref (buf);
2599 /* get stream stats now */
2600 avi->have_index = gst_avi_demux_do_index_stats (avi);
2602 stamp = gst_util_get_timestamp () - stamp;
2603 GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT,
2604 GST_TIME_ARGS (stamp));
2611 GST_DEBUG_OBJECT (avi, "empty index");
2612 gst_buffer_unref (buf);
2617 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2618 ("Cannot allocate memory for %u*%u=%u bytes",
2619 (guint) sizeof (GstAviIndexEntry), num,
2620 (guint) sizeof (GstAviIndexEntry) * num));
2621 gst_buffer_unref (buf);
2627 * gst_avi_demux_stream_index:
2628 * @avi: avi demuxer object.
2630 * Seeks to index and reads it.
2633 gst_avi_demux_stream_index (GstAviDemux * avi)
2636 guint64 offset = avi->offset;
2641 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2643 /* get chunk information */
2644 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2645 if (res != GST_FLOW_OK)
2647 else if (GST_BUFFER_SIZE (buf) < 8)
2650 /* check tag first before blindy trying to read 'size' bytes */
2651 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2652 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2653 if (tag == GST_RIFF_TAG_LIST) {
2654 /* this is the movi tag */
2655 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2656 (8 + GST_ROUND_UP_2 (size)));
2657 offset += 8 + GST_ROUND_UP_2 (size);
2658 gst_buffer_unref (buf);
2659 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2660 if (res != GST_FLOW_OK)
2662 else if (GST_BUFFER_SIZE (buf) < 8)
2664 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2665 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2668 if (tag != GST_RIFF_TAG_idx1)
2673 gst_buffer_unref (buf);
2675 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2677 /* read chunk, advance offset */
2678 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2679 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2682 GST_DEBUG ("will parse index chunk size %u for tag %"
2683 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2685 gst_avi_demux_parse_index (avi, buf);
2687 #ifndef GST_DISABLE_GST_DEBUG
2688 /* debug our indexes */
2691 GstAviStream *stream;
2693 for (i = 0; i < avi->num_streams; i++) {
2694 stream = &avi->stream[i];
2695 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2696 i, stream->idx_n, stream->total_bytes);
2705 GST_DEBUG_OBJECT (avi,
2706 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2711 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2712 gst_buffer_unref (buf);
2717 GST_WARNING_OBJECT (avi,
2718 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2719 GST_FOURCC_ARGS (tag));
2720 gst_buffer_unref (buf);
2725 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2726 gst_buffer_unref (buf);
2732 * gst_avi_demux_stream_index_push:
2733 * @avi: avi demuxer object.
2738 gst_avi_demux_stream_index_push (GstAviDemux * avi)
2740 guint64 offset = avi->idx1_offset;
2745 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2747 /* get chunk information */
2748 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
2751 /* check tag first before blindly trying to read 'size' bytes */
2752 if (tag == GST_RIFF_TAG_LIST) {
2753 /* this is the movi tag */
2754 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2755 (8 + GST_ROUND_UP_2 (size)));
2756 avi->idx1_offset = offset + 8 + GST_ROUND_UP_2 (size);
2757 /* issue seek to allow chain function to handle it and return! */
2758 perform_seek_to_offset (avi, avi->idx1_offset);
2762 if (tag != GST_RIFF_TAG_idx1)
2765 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2767 /* flush chunk header */
2768 gst_adapter_flush (avi->adapter, 8);
2769 /* read chunk payload */
2770 buf = gst_adapter_take_buffer (avi->adapter, size);
2773 /* advance offset */
2774 offset += 8 + GST_ROUND_UP_2 (size);
2776 GST_DEBUG ("will parse index chunk size %u for tag %"
2777 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2779 avi->offset = avi->first_movi_offset;
2780 gst_avi_demux_parse_index (avi, buf);
2782 #ifndef GST_DISABLE_GST_DEBUG
2783 /* debug our indexes */
2786 GstAviStream *stream;
2788 for (i = 0; i < avi->num_streams; i++) {
2789 stream = &avi->stream[i];
2790 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2791 i, stream->idx_n, stream->total_bytes);
2800 GST_DEBUG_OBJECT (avi,
2801 "taking data from adapter failed: pos=%" G_GUINT64_FORMAT " size=%u",
2807 GST_WARNING_OBJECT (avi,
2808 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2809 GST_FOURCC_ARGS (tag));
2815 * gst_avi_demux_peek_tag:
2817 * Returns the tag and size of the next chunk
2819 static GstFlowReturn
2820 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2823 GstFlowReturn res = GST_FLOW_OK;
2824 GstBuffer *buf = NULL;
2828 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2829 if (res != GST_FLOW_OK)
2832 bufsize = GST_BUFFER_SIZE (buf);
2836 bufdata = GST_BUFFER_DATA (buf);
2838 *tag = GST_READ_UINT32_LE (bufdata);
2839 *size = GST_READ_UINT32_LE (bufdata + 4);
2841 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2842 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2843 *size, offset + 8, offset + 8 + (gint64) * size);
2846 gst_buffer_unref (buf);
2853 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2858 GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
2859 res = GST_FLOW_ERROR;
2865 * gst_avi_demux_next_data_buffer:
2867 * Returns the offset and size of the next buffer
2868 * Position is the position of the buffer (after tag and size)
2870 static GstFlowReturn
2871 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2872 guint32 * tag, guint * size)
2874 guint64 off = *offset;
2879 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2880 if (res != GST_FLOW_OK)
2882 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2883 off += 8 + 4; /* skip tag + size + subtag */
2895 * gst_avi_demux_stream_scan:
2896 * @avi: calling element (used for debugging/errors).
2898 * Scan the file for all chunks to "create" a new index.
2902 gst_avi_demux_stream_scan (GstAviDemux * avi)
2905 GstAviStream *stream;
2914 * - implement non-seekable source support.
2916 GST_DEBUG_OBJECT (avi, "Creating index");
2918 /* get the size of the file */
2919 format = GST_FORMAT_BYTES;
2920 if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
2924 /* guess the total amount of entries we expect */
2928 GstAviIndexEntry entry;
2931 /* start reading data buffers to find the id and offset */
2932 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2933 if (G_UNLIKELY (res != GST_FLOW_OK))
2937 stream = gst_avi_demux_stream_for_id (avi, tag);
2938 if (G_UNLIKELY (!stream))
2941 /* we can't figure out the keyframes, assume they all are */
2942 entry.flags = GST_AVI_KEYFRAME;
2946 /* and add to the index of this stream */
2947 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2951 /* update position */
2952 pos += GST_ROUND_UP_2 (size);
2953 if (G_UNLIKELY (pos > length)) {
2954 GST_WARNING_OBJECT (avi,
2955 "Stopping index lookup since we are further than EOF");
2961 avi->have_index = gst_avi_demux_do_index_stats (avi);
2968 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2969 ("Cannot allocate memory for %u*%u=%u bytes",
2970 (guint) sizeof (GstAviIndexEntry), num,
2971 (guint) sizeof (GstAviIndexEntry) * num));
2977 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
2981 GstAviStream *stream;
2983 total = GST_CLOCK_TIME_NONE;
2985 /* all streams start at a timestamp 0 */
2986 for (i = 0; i < avi->num_streams; i++) {
2987 GstClockTime duration, hduration;
2988 gst_riff_strh *strh;
2990 stream = &avi->stream[i];
2991 if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh)))
2994 /* get header duration for the stream */
2995 hduration = stream->hdr_duration;
2996 /* index duration calculated during parsing */
2997 duration = stream->idx_duration;
2999 /* now pick a good duration */
3000 if (GST_CLOCK_TIME_IS_VALID (duration)) {
3001 /* index gave valid duration, use that */
3002 GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT,
3003 stream, GST_TIME_ARGS (duration));
3005 /* fall back to header info to calculate a duration */
3006 duration = hduration;
3008 GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT,
3009 i, GST_TIME_ARGS (duration));
3010 /* set duration for the stream */
3011 stream->duration = duration;
3013 /* find total duration */
3014 if (total == GST_CLOCK_TIME_NONE ||
3015 (GST_CLOCK_TIME_IS_VALID (duration) && duration > total))
3019 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
3020 /* now update the duration for those streams where we had none */
3021 for (i = 0; i < avi->num_streams; i++) {
3022 stream = &avi->stream[i];
3024 if (!GST_CLOCK_TIME_IS_VALID (stream->duration)
3025 || stream->duration == 0) {
3026 stream->duration = total;
3028 GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT,
3029 stream, GST_TIME_ARGS (total));
3034 /* and set the total duration in the segment. */
3035 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
3036 GST_TIME_ARGS (total));
3038 gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
3041 /* returns FALSE if there are no pads to deliver event to,
3042 * otherwise TRUE (whatever the outcome of event sending),
3043 * takes ownership of the event. */
3045 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
3047 gboolean result = FALSE;
3050 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
3051 GST_EVENT_TYPE_NAME (event), avi->num_streams);
3053 for (i = 0; i < avi->num_streams; i++) {
3054 GstAviStream *stream = &avi->stream[i];
3058 gst_pad_push_event (stream->pad, gst_event_ref (event));
3061 gst_event_unref (event);
3066 gst_avi_demux_check_seekability (GstAviDemux * avi)
3069 gboolean seekable = FALSE;
3070 gint64 start = -1, stop = -1;
3072 query = gst_query_new_seeking (GST_FORMAT_BYTES);
3073 if (!gst_pad_peer_query (avi->sinkpad, query)) {
3074 GST_DEBUG_OBJECT (avi, "seeking query failed");
3078 gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
3080 /* try harder to query upstream size if we didn't get it the first time */
3081 if (seekable && stop == -1) {
3082 GstFormat fmt = GST_FORMAT_BYTES;
3084 GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
3085 gst_pad_query_peer_duration (avi->sinkpad, &fmt, &stop);
3088 /* if upstream doesn't know the size, it's likely that it's not seekable in
3089 * practice even if it technically may be seekable */
3090 if (seekable && (start != 0 || stop <= start)) {
3091 GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
3096 GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
3097 G_GUINT64_FORMAT ")", seekable, start, stop);
3098 avi->seekable = seekable;
3100 gst_query_unref (query);
3104 * Read AVI headers when streaming
3106 static GstFlowReturn
3107 gst_avi_demux_stream_header_push (GstAviDemux * avi)
3109 GstFlowReturn ret = GST_FLOW_OK;
3114 GstBuffer *buf = NULL, *sub = NULL;
3118 GstTagList *tags = NULL;
3120 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
3122 switch (avi->header_state) {
3123 case GST_AVI_DEMUX_HEADER_TAG_LIST:
3124 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3125 avi->offset += 8 + GST_ROUND_UP_2 (size);
3126 if (tag != GST_RIFF_TAG_LIST)
3127 goto header_no_list;
3129 gst_adapter_flush (avi->adapter, 8);
3130 /* Find the 'hdrl' LIST tag */
3131 GST_DEBUG ("Reading %d bytes", size);
3132 buf = gst_adapter_take_buffer (avi->adapter, size);
3134 if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
3135 goto header_no_hdrl;
3139 gst_adapter_flush (avi->adapter, 1);
3141 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
3143 /* the hdrl starts with a 'avih' header */
3144 if (!gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3146 goto header_no_avih;
3148 if (tag != GST_RIFF_TAG_avih)
3149 goto header_no_avih;
3151 if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3152 goto header_wrong_avih;
3154 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
3156 /* now, read the elements from the header until the end */
3157 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3159 /* sub can be NULL on empty tags */
3164 case GST_RIFF_TAG_LIST:
3165 if (GST_BUFFER_SIZE (sub) < 4)
3168 switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
3169 case GST_RIFF_LIST_strl:
3170 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3172 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3173 ("failed to parse stream, ignoring"));
3178 case GST_RIFF_LIST_odml:
3179 gst_avi_demux_parse_odml (avi, sub);
3183 GST_WARNING_OBJECT (avi,
3184 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3185 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
3188 case GST_RIFF_TAG_JUNQ:
3189 case GST_RIFF_TAG_JUNK:
3194 gst_avi_demux_parse_idit (avi, sub);
3197 GST_WARNING_OBJECT (avi,
3198 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
3199 offset, GST_FOURCC_ARGS (tag));
3201 case GST_RIFF_TAG_JUNQ:
3202 case GST_RIFF_TAG_JUNK:
3204 /* move to next chunk */
3206 gst_buffer_unref (sub);
3211 gst_buffer_unref (buf);
3212 GST_DEBUG ("elements parsed");
3214 /* check parsed streams */
3215 if (avi->num_streams == 0) {
3217 } else if (avi->num_streams != avi->avih->streams) {
3218 GST_WARNING_OBJECT (avi,
3219 "Stream header mentioned %d streams, but %d available",
3220 avi->avih->streams, avi->num_streams);
3222 GST_DEBUG ("Get junk and info next");
3223 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
3225 /* Need more data */
3229 case GST_AVI_DEMUX_HEADER_INFO:
3230 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
3232 if (gst_adapter_available (avi->adapter) < 12)
3235 data = gst_adapter_peek (avi->adapter, 12);
3236 tag = GST_READ_UINT32_LE (data);
3237 size = GST_READ_UINT32_LE (data + 4);
3238 ltag = GST_READ_UINT32_LE (data + 8);
3240 if (tag == GST_RIFF_TAG_LIST) {
3242 case GST_RIFF_LIST_movi:
3243 gst_adapter_flush (avi->adapter, 12);
3244 if (!avi->first_movi_offset)
3245 avi->first_movi_offset = avi->offset;
3247 avi->idx1_offset = avi->offset + size - 4;
3249 case GST_RIFF_LIST_INFO:
3250 GST_DEBUG ("Found INFO chunk");
3251 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3252 GST_DEBUG ("got size %d", size);
3254 gst_adapter_flush (avi->adapter, 12);
3256 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
3259 gst_adapter_flush (avi->adapter, 1);
3260 gst_riff_parse_info (GST_ELEMENT_CAST (avi), buf, &tags);
3262 if (avi->globaltags) {
3263 gst_tag_list_insert (avi->globaltags, tags,
3264 GST_TAG_MERGE_REPLACE);
3266 avi->globaltags = tags;
3270 gst_buffer_unref (buf);
3272 avi->offset += GST_ROUND_UP_2 (size) - 4;
3274 GST_DEBUG ("skipping INFO LIST prefix");
3277 /* Need more data */
3282 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3283 avi->offset += 8 + GST_ROUND_UP_2 (size);
3284 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3285 // ??? goto iterate; ???
3287 /* Need more data */
3293 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3294 avi->offset += 8 + GST_ROUND_UP_2 (size);
3295 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3298 /* Need more data */
3305 GST_WARNING ("unhandled header state: %d", avi->header_state);
3310 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3311 avi->num_streams, avi->stream[0].indexes);
3313 GST_DEBUG ("Found movi chunk. Starting to stream data");
3314 avi->state = GST_AVI_DEMUX_MOVI;
3316 /* no indexes in push mode, but it still sets some variables */
3317 gst_avi_demux_calculate_durations_from_index (avi);
3319 gst_avi_demux_expose_streams (avi, TRUE);
3321 /* prepare all streams for index 0 */
3322 for (i = 0; i < avi->num_streams; i++)
3323 avi->stream[i].current_entry = 0;
3325 /* create initial NEWSEGMENT event */
3326 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3327 stop = avi->segment.duration;
3329 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3332 gst_event_unref (avi->seg_event);
3333 avi->seg_event = gst_event_new_new_segment_full
3334 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3335 avi->segment.start, stop, avi->segment.time);
3337 gst_avi_demux_check_seekability (avi);
3339 /* at this point we know all the streams and we can signal the no more
3341 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3342 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3349 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3350 return GST_FLOW_ERROR;
3354 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3355 ("Invalid AVI header (no LIST at start): %"
3356 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3357 return GST_FLOW_ERROR;
3361 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3362 ("Invalid AVI header (no hdrl at start): %"
3363 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3364 gst_buffer_unref (buf);
3365 return GST_FLOW_ERROR;
3369 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3370 ("Invalid AVI header (no avih at start): %"
3371 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3373 gst_buffer_unref (sub);
3375 gst_buffer_unref (buf);
3376 return GST_FLOW_ERROR;
3380 gst_buffer_unref (buf);
3381 return GST_FLOW_ERROR;
3386 gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d,
3387 gint h, gint min, gint s)
3392 date = g_date_new_dmy (d, m, y);
3393 if (!g_date_valid (date)) {
3395 GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
3400 dt = gst_date_time_new_local_time (y, m, d, h, min, s);
3402 if (avi->globaltags == NULL)
3403 avi->globaltags = gst_tag_list_new ();
3405 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
3409 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE_TIME,
3411 gst_date_time_unref (dt);
3416 gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data)
3421 ret = sscanf (data, "%d:%d:%d", &y, &m, &d);
3423 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3426 gst_avi_demux_add_date_tag (avi, y, m, d, 0, 0, 0);
3430 get_month_num (gchar * data, guint size)
3432 if (g_ascii_strncasecmp (data, "jan", 3) == 0) {
3434 } else if (g_ascii_strncasecmp (data, "feb", 3) == 0) {
3436 } else if (g_ascii_strncasecmp (data, "mar", 3) == 0) {
3438 } else if (g_ascii_strncasecmp (data, "apr", 3) == 0) {
3440 } else if (g_ascii_strncasecmp (data, "may", 3) == 0) {
3442 } else if (g_ascii_strncasecmp (data, "jun", 3) == 0) {
3444 } else if (g_ascii_strncasecmp (data, "jul", 3) == 0) {
3446 } else if (g_ascii_strncasecmp (data, "aug", 3) == 0) {
3448 } else if (g_ascii_strncasecmp (data, "sep", 3) == 0) {
3450 } else if (g_ascii_strncasecmp (data, "oct", 3) == 0) {
3452 } else if (g_ascii_strncasecmp (data, "nov", 3) == 0) {
3454 } else if (g_ascii_strncasecmp (data, "dec", 3) == 0) {
3462 gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data)
3464 gint year, month, day;
3465 gint hour, min, sec;
3470 ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour,
3473 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3476 month = get_month_num (monthstr, strlen (monthstr));
3477 gst_avi_demux_add_date_tag (avi, year, month, day, hour, min, sec);
3481 gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
3483 gchar *data = (gchar *) GST_BUFFER_DATA (buf);
3484 guint size = GST_BUFFER_SIZE (buf);
3485 gchar *safedata = NULL;
3489 * http://www.eden-foundation.org/products/code/film_date_stamp/index.html
3491 * This tag could be in one of the below formats
3492 * 2005:08:17 11:42:43
3493 * THU OCT 26 16:46:04 2006
3494 * Mon Mar 3 09:44:56 2008
3496 * FIXME: Our date tag doesn't include hours
3499 /* skip eventual initial whitespace */
3500 while (size > 0 && g_ascii_isspace (data[0])) {
3509 /* make a safe copy to add a \0 to the end of the string */
3510 safedata = g_strndup (data, size);
3512 /* test if the first char is a alpha or a number */
3513 if (g_ascii_isdigit (data[0])) {
3514 gst_avi_demux_parse_idit_nums_only (avi, safedata);
3517 } else if (g_ascii_isalpha (data[0])) {
3518 gst_avi_demux_parse_idit_text (avi, safedata);
3526 GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
3530 * Read full AVI headers.
3532 static GstFlowReturn
3533 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3536 GstBuffer *buf, *sub = NULL;
3540 GstElement *element = GST_ELEMENT_CAST (avi);
3542 GstTagList *tags = NULL;
3544 stamp = gst_util_get_timestamp ();
3546 /* the header consists of a 'hdrl' LIST tag */
3547 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3548 if (res != GST_FLOW_OK)
3549 goto pull_range_failed;
3550 else if (tag != GST_RIFF_TAG_LIST)
3552 else if (GST_BUFFER_SIZE (buf) < 4)
3555 GST_DEBUG_OBJECT (avi, "parsing headers");
3557 /* Find the 'hdrl' LIST tag */
3558 while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
3559 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3560 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
3563 gst_buffer_unref (buf);
3565 /* read new chunk */
3566 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3567 if (res != GST_FLOW_OK)
3568 goto pull_range_failed;
3569 else if (tag != GST_RIFF_TAG_LIST)
3571 else if (GST_BUFFER_SIZE (buf) < 4)
3575 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3577 /* the hdrl starts with a 'avih' header */
3578 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3580 else if (tag != GST_RIFF_TAG_avih)
3582 else if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3585 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3587 /* now, read the elements from the header until the end */
3588 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3589 /* sub can be NULL on empty tags */
3594 case GST_RIFF_TAG_LIST:
3599 if (GST_BUFFER_SIZE (sub) < 4)
3602 data = GST_BUFFER_DATA (sub);
3603 fourcc = GST_READ_UINT32_LE (data);
3606 case GST_RIFF_LIST_strl:
3607 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3608 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3609 ("failed to parse stream, ignoring"));
3614 case GST_RIFF_LIST_odml:
3615 gst_avi_demux_parse_odml (avi, sub);
3618 case GST_RIFF_LIST_INFO:
3619 GST_BUFFER_DATA (sub) = data + 4;
3620 GST_BUFFER_SIZE (sub) -= 4;
3621 gst_riff_parse_info (element, sub, &tags);
3623 if (avi->globaltags) {
3624 gst_tag_list_insert (avi->globaltags, tags,
3625 GST_TAG_MERGE_REPLACE);
3627 avi->globaltags = tags;
3633 GST_WARNING_OBJECT (avi,
3634 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3635 GST_FOURCC_ARGS (fourcc));
3636 GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
3637 GST_BUFFER_SIZE (sub));
3639 case GST_RIFF_TAG_JUNQ:
3640 case GST_RIFF_TAG_JUNK:
3646 gst_avi_demux_parse_idit (avi, sub);
3649 GST_WARNING_OBJECT (avi,
3650 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3651 GST_FOURCC_ARGS (tag), offset);
3652 GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
3653 GST_BUFFER_SIZE (sub));
3655 case GST_RIFF_TAG_JUNQ:
3656 case GST_RIFF_TAG_JUNK:
3659 gst_buffer_unref (sub);
3664 gst_buffer_unref (buf);
3665 GST_DEBUG ("elements parsed");
3667 /* check parsed streams */
3668 if (avi->num_streams == 0)
3670 else if (avi->num_streams != avi->avih->streams) {
3671 GST_WARNING_OBJECT (avi,
3672 "Stream header mentioned %d streams, but %d available",
3673 avi->avih->streams, avi->num_streams);
3676 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3677 G_GUINT64_FORMAT, avi->offset);
3679 /* Now, find the data (i.e. skip all junk between header and data) */
3685 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3686 if (res != GST_FLOW_OK) {
3687 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3688 goto pull_range_failed;
3689 } else if (GST_BUFFER_SIZE (buf) < 12) {
3690 GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
3691 GST_BUFFER_SIZE (buf));
3692 gst_buffer_unref (buf);
3693 return GST_FLOW_ERROR;
3696 data = GST_BUFFER_DATA (buf);
3698 tag = GST_READ_UINT32_LE (data);
3699 size = GST_READ_UINT32_LE (data + 4);
3700 ltag = GST_READ_UINT32_LE (data + 8);
3702 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3703 GST_FOURCC_ARGS (tag), size);
3704 GST_MEMDUMP ("Tag content", data, GST_BUFFER_SIZE (buf));
3705 gst_buffer_unref (buf);
3708 case GST_RIFF_TAG_LIST:{
3710 case GST_RIFF_LIST_movi:
3711 GST_DEBUG_OBJECT (avi,
3712 "Reached the 'movi' tag, we're done with skipping");
3714 case GST_RIFF_LIST_INFO:
3716 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3718 if (res != GST_FLOW_OK) {
3719 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3720 goto pull_range_failed;
3722 GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
3724 GST_DEBUG ("skipping INFO LIST prefix");
3725 avi->offset += (4 - GST_ROUND_UP_2 (size));
3726 gst_buffer_unref (buf);
3730 sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
3731 gst_riff_parse_info (element, sub, &tags);
3733 if (avi->globaltags) {
3734 gst_tag_list_insert (avi->globaltags, tags,
3735 GST_TAG_MERGE_REPLACE);
3737 avi->globaltags = tags;
3742 gst_buffer_unref (sub);
3745 gst_buffer_unref (buf);
3746 /* gst_riff_read_chunk() has already advanced avi->offset */
3749 GST_WARNING_OBJECT (avi,
3750 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3751 GST_FOURCC_ARGS (ltag));
3752 avi->offset += 8 + GST_ROUND_UP_2 (size);
3758 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3759 GST_FOURCC_ARGS (tag));
3761 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3762 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3763 /* Only get buffer for debugging if the memdump is needed */
3764 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
3765 res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf);
3766 if (res != GST_FLOW_OK) {
3767 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3768 goto pull_range_failed;
3770 GST_MEMDUMP ("Junk", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
3771 gst_buffer_unref (buf);
3773 avi->offset += 8 + GST_ROUND_UP_2 (size);
3779 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3780 avi->num_streams, avi->stream[0].indexes);
3782 /* create or read stream index (for seeking) */
3783 if (avi->stream[0].indexes != NULL) {
3784 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3785 gst_avi_demux_read_subindexes_pull (avi);
3787 if (!avi->have_index) {
3788 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
3789 gst_avi_demux_stream_index (avi);
3791 /* still no index, scan */
3792 if (!avi->have_index) {
3793 gst_avi_demux_stream_scan (avi);
3795 /* still no index.. this is a fatal error for now.
3796 * FIXME, we should switch to plain push mode without seeking
3797 * instead of failing. */
3798 if (!avi->have_index)
3802 /* use the indexes now to construct nice durations */
3803 gst_avi_demux_calculate_durations_from_index (avi);
3805 gst_avi_demux_expose_streams (avi, FALSE);
3807 /* create initial NEWSEGMENT event */
3808 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3809 stop = avi->segment.duration;
3811 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3813 /* do initial seek to the default segment values */
3814 gst_avi_demux_do_seek (avi, &avi->segment);
3816 /* prepare initial segment */
3818 gst_event_unref (avi->seg_event);
3819 avi->seg_event = gst_event_new_new_segment_full
3820 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3821 avi->segment.start, stop, avi->segment.time);
3823 stamp = gst_util_get_timestamp () - stamp;
3824 GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT,
3825 GST_TIME_ARGS (stamp));
3827 /* at this point we know all the streams and we can signal the no more
3829 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3830 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3837 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3838 ("Invalid AVI header (no LIST at start): %"
3839 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3840 gst_buffer_unref (buf);
3841 return GST_FLOW_ERROR;
3845 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3846 ("Invalid AVI header (no hdrl at start): %"
3847 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3848 gst_buffer_unref (buf);
3849 return GST_FLOW_ERROR;
3853 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3854 ("Invalid AVI header (no avih at start): %"
3855 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3857 gst_buffer_unref (sub);
3858 gst_buffer_unref (buf);
3859 return GST_FLOW_ERROR;
3863 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3864 ("Invalid AVI header (cannot parse avih at start)"));
3865 gst_buffer_unref (buf);
3866 return GST_FLOW_ERROR;
3870 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3871 return GST_FLOW_ERROR;
3875 GST_WARNING ("file without or too big index");
3876 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3877 ("Could not get/create index"));
3878 return GST_FLOW_ERROR;
3882 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3883 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3884 return GST_FLOW_ERROR;
3888 /* move a stream to @index */
3890 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
3891 GstSegment * segment, guint index)
3893 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
3895 if (segment->rate < 0.0) {
3897 /* Because we don't know the frame order we need to push from the prev keyframe
3898 * to the next keyframe. If there is a smart decoder downstream he will notice
3899 * that there are too many encoded frames send and return UNEXPECTED when there
3900 * are enough decoded frames to fill the segment. */
3901 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
3903 /* FIXME, we go back to 0, we should look at segment.start. We will however
3904 * stop earlier when the see the timestamp < segment.start */
3905 stream->start_entry = 0;
3906 stream->step_entry = index;
3907 stream->current_entry = index;
3908 stream->stop_entry = next_key;
3910 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
3911 stream->start_entry, stream->step_entry, stream->stop_entry);
3913 stream->start_entry = index;
3914 stream->step_entry = index;
3915 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
3917 if (stream->current_entry != index) {
3918 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
3919 stream->current_entry, index);
3920 stream->current_entry = index;
3921 stream->discont = TRUE;
3924 /* update the buffer info */
3925 gst_avi_demux_get_buffer_info (avi, stream, index,
3926 &stream->current_timestamp, &stream->current_ts_end,
3927 &stream->current_offset, &stream->current_offset_end);
3929 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
3930 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3931 ", off_end %" G_GUINT64_FORMAT, index,
3932 GST_TIME_ARGS (stream->current_timestamp),
3933 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3934 stream->current_offset_end);
3936 GST_DEBUG_OBJECT (avi, "Seeking to offset %" G_GUINT64_FORMAT,
3937 stream->index[index].offset);
3941 * Do the actual seeking.
3944 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3946 GstClockTime seek_time;
3949 GstAviStream *stream;
3951 seek_time = segment->last_stop;
3952 keyframe = ! !(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3954 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
3955 " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
3957 /* FIXME, this code assumes the main stream with keyframes is stream 0,
3958 * which is mostly correct... */
3959 stream = &avi->stream[avi->main_stream];
3961 /* get the entry index for the requested position */
3962 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
3963 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
3965 /* check if we are already on a keyframe */
3966 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
3967 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
3968 /* now go to the previous keyframe, this is where we should start
3970 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
3971 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
3974 /* move the main stream to this position */
3975 gst_avi_demux_move_stream (avi, stream, segment, index);
3978 /* when seeking to a keyframe, we update the result seek time
3979 * to the time of the keyframe. */
3980 seek_time = stream->current_timestamp;
3981 GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
3982 GST_TIME_ARGS (seek_time));
3985 /* the seek time is also the last_stop and stream time when going
3987 segment->last_stop = seek_time;
3988 if (segment->rate > 0.0)
3989 segment->time = seek_time;
3991 /* now set DISCONT and align the other streams */
3992 for (i = 0; i < avi->num_streams; i++) {
3993 GstAviStream *ostream;
3995 ostream = &avi->stream[i];
3996 if ((ostream == stream) || (ostream->index == NULL))
3999 /* get the entry index for the requested position */
4000 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
4002 /* move to previous keyframe */
4003 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
4004 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
4006 gst_avi_demux_move_stream (avi, ostream, segment, index);
4008 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
4009 GST_TIME_ARGS (seek_time));
4015 * Handle seek event in pull mode.
4018 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4023 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4027 GstSegment seeksegment = { 0, };
4031 GST_DEBUG_OBJECT (avi, "doing seek with event");
4033 gst_event_parse_seek (event, &rate, &format, &flags,
4034 &cur_type, &cur, &stop_type, &stop);
4036 /* we have to have a format as the segment format. Try to convert
4038 if (format != GST_FORMAT_TIME) {
4039 GstFormat fmt = GST_FORMAT_TIME;
4040 gboolean res = TRUE;
4042 if (cur_type != GST_SEEK_TYPE_NONE)
4043 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
4044 if (res && stop_type != GST_SEEK_TYPE_NONE)
4045 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
4051 GST_DEBUG_OBJECT (avi,
4052 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
4053 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
4054 /* FIXME: can we do anything with rate!=1.0 */
4056 GST_DEBUG_OBJECT (avi, "doing seek without event");
4061 /* save flush flag */
4062 flush = flags & GST_SEEK_FLAG_FLUSH;
4065 GstEvent *fevent = gst_event_new_flush_start ();
4067 /* for a flushing seek, we send a flush_start on all pads. This will
4068 * eventually stop streaming with a WRONG_STATE. We can thus eventually
4069 * take the STREAM_LOCK. */
4070 GST_DEBUG_OBJECT (avi, "sending flush start");
4071 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4072 gst_pad_push_event (avi->sinkpad, fevent);
4074 /* a non-flushing seek, we PAUSE the task so that we can take the
4076 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
4077 gst_pad_pause_task (avi->sinkpad);
4080 /* wait for streaming to stop */
4081 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
4082 GST_PAD_STREAM_LOCK (avi->sinkpad);
4084 /* copy segment, we need this because we still need the old
4085 * segment when we close the current segment. */
4086 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4089 GST_DEBUG_OBJECT (avi, "configuring seek");
4090 gst_segment_set_seek (&seeksegment, rate, format, flags,
4091 cur_type, cur, stop_type, stop, &update);
4093 /* do the seek, seeksegment.last_stop contains the new position, this
4094 * actually never fails. */
4095 gst_avi_demux_do_seek (avi, &seeksegment);
4097 gst_event_replace (&avi->close_seg_event, NULL);
4099 GstEvent *fevent = gst_event_new_flush_stop ();
4101 GST_DEBUG_OBJECT (avi, "sending flush stop");
4102 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4103 gst_pad_push_event (avi->sinkpad, fevent);
4104 } else if (avi->segment_running) {
4105 /* we are running the current segment and doing a non-flushing seek,
4106 * close the segment first based on the last_stop. */
4107 GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
4108 " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
4109 avi->close_seg_event = gst_event_new_new_segment_full (TRUE,
4110 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4111 avi->segment.start, avi->segment.last_stop, avi->segment.time);
4114 /* now update the real segment info */
4115 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
4117 /* post the SEGMENT_START message when we do segmented playback */
4118 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4119 gst_element_post_message (GST_ELEMENT_CAST (avi),
4120 gst_message_new_segment_start (GST_OBJECT_CAST (avi),
4121 avi->segment.format, avi->segment.last_stop));
4124 /* prepare for streaming again */
4125 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
4126 stop = avi->segment.duration;
4128 /* queue the segment event for the streaming thread. */
4130 gst_event_unref (avi->seg_event);
4131 if (avi->segment.rate > 0.0) {
4132 /* forwards goes from last_stop to stop */
4133 avi->seg_event = gst_event_new_new_segment_full (FALSE,
4134 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4135 avi->segment.last_stop, stop, avi->segment.time);
4137 /* reverse goes from start to last_stop */
4138 avi->seg_event = gst_event_new_new_segment_full (FALSE,
4139 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4140 avi->segment.start, avi->segment.last_stop, avi->segment.time);
4143 if (!avi->streaming) {
4144 avi->segment_running = TRUE;
4145 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4148 /* reset the last flow and mark discont, seek is always DISCONT */
4149 for (i = 0; i < avi->num_streams; i++) {
4150 GST_DEBUG_OBJECT (avi, "marking DISCONT");
4151 avi->stream[i].last_flow = GST_FLOW_OK;
4152 avi->stream[i].discont = TRUE;
4154 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
4161 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4167 * Handle seek event in push mode.
4170 avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4175 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4178 GstAviStream *stream;
4182 GstSegment seeksegment;
4185 /* check we have the index */
4186 if (!avi->have_index) {
4187 GST_DEBUG_OBJECT (avi, "no seek index built, seek aborted.");
4190 GST_DEBUG_OBJECT (avi, "doing push-based seek with event");
4193 gst_event_parse_seek (event, &rate, &format, &flags,
4194 &cur_type, &cur, &stop_type, &stop);
4196 if (format != GST_FORMAT_TIME) {
4197 GstFormat fmt = GST_FORMAT_TIME;
4198 gboolean res = TRUE;
4200 if (cur_type != GST_SEEK_TYPE_NONE)
4201 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
4202 if (res && stop_type != GST_SEEK_TYPE_NONE)
4203 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
4205 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4212 /* let gst_segment handle any tricky stuff */
4213 GST_DEBUG_OBJECT (avi, "configuring seek");
4214 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4215 gst_segment_set_seek (&seeksegment, rate, format, flags,
4216 cur_type, cur, stop_type, stop, &update);
4218 keyframe = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
4219 cur = seeksegment.last_stop;
4221 GST_DEBUG_OBJECT (avi,
4222 "Seek requested: ts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
4223 ", kf %u, rate %lf", GST_TIME_ARGS (cur), GST_TIME_ARGS (stop), keyframe,
4227 GST_DEBUG_OBJECT (avi, "negative rate seek not supported in push mode");
4231 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4232 * which is mostly correct... */
4233 str_num = avi->main_stream;
4234 stream = &avi->stream[str_num];
4236 /* get the entry index for the requested position */
4237 index = gst_avi_demux_index_for_time (avi, stream, cur);
4238 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT,
4239 str_num, index, GST_TIME_ARGS (cur));
4241 /* check if we are already on a keyframe */
4242 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4243 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4244 /* now go to the previous keyframe, this is where we should start
4246 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4247 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index);
4250 gst_avi_demux_get_buffer_info (avi, stream, index,
4251 &stream->current_timestamp, &stream->current_ts_end,
4252 &stream->current_offset, &stream->current_offset_end);
4254 /* re-use cur to be the timestamp of the seek as it _will_ be */
4255 cur = stream->current_timestamp;
4257 min_offset = stream->index[index].offset;
4258 avi->seek_kf_offset = min_offset - 8;
4260 GST_DEBUG_OBJECT (avi,
4261 "Seek to: ts %" GST_TIME_FORMAT " (on str %u, idx %u, offset %"
4262 G_GUINT64_FORMAT ")", GST_TIME_ARGS (stream->current_timestamp), str_num,
4265 for (n = 0; n < avi->num_streams; n++) {
4266 GstAviStream *str = &avi->stream[n];
4269 if (n == avi->main_stream)
4272 /* get the entry index for the requested position */
4273 idx = gst_avi_demux_index_for_time (avi, str, cur);
4274 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT, n,
4275 idx, GST_TIME_ARGS (cur));
4277 /* check if we are already on a keyframe */
4278 if (!ENTRY_IS_KEYFRAME (&str->index[idx])) {
4279 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4280 /* now go to the previous keyframe, this is where we should start
4282 idx = gst_avi_demux_index_prev (avi, str, idx, TRUE);
4283 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", idx);
4286 gst_avi_demux_get_buffer_info (avi, str, idx,
4287 &str->current_timestamp, &str->current_ts_end,
4288 &str->current_offset, &str->current_offset_end);
4290 if (str->index[idx].offset < min_offset) {
4291 min_offset = str->index[idx].offset;
4292 GST_DEBUG_OBJECT (avi,
4293 "Found an earlier offset at %" G_GUINT64_FORMAT ", str %u",
4301 GST_DEBUG_OBJECT (avi,
4302 "Seek performed: str %u, offset %" G_GUINT64_FORMAT ", idx %u, ts %"
4303 GST_TIME_FORMAT ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4304 ", off_end %" G_GUINT64_FORMAT, str_num, min_offset, index,
4305 GST_TIME_ARGS (stream->current_timestamp),
4306 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4307 stream->current_offset_end);
4309 /* index data refers to data, not chunk header (for pull mode convenience) */
4311 GST_DEBUG_OBJECT (avi, "seeking to chunk at offset %" G_GUINT64_FORMAT,
4314 if (!perform_seek_to_offset (avi, min_offset)) {
4315 GST_DEBUG_OBJECT (avi, "seek event failed!");
4323 * Handle whether we can perform the seek event or if we have to let the chain
4324 * function handle seeks to build the seek indexes first.
4327 gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
4330 /* check for having parsed index already */
4331 if (!avi->have_index) {
4333 gboolean building_index;
4335 GST_OBJECT_LOCK (avi);
4336 /* handle the seek event in the chain function */
4337 avi->state = GST_AVI_DEMUX_SEEK;
4339 /* copy the event */
4340 if (avi->seek_event)
4341 gst_event_unref (avi->seek_event);
4342 avi->seek_event = gst_event_ref (event);
4344 /* set the building_index flag so that only one thread can setup the
4345 * structures for index seeking. */
4346 building_index = avi->building_index;
4347 if (!building_index) {
4348 avi->building_index = TRUE;
4349 if (avi->stream[0].indexes) {
4350 avi->odml_stream = 0;
4351 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
4352 offset = avi->odml_subidxs[0];
4354 offset = avi->idx1_offset;
4357 GST_OBJECT_UNLOCK (avi);
4359 if (!building_index) {
4360 /* seek to the first subindex or legacy index */
4361 GST_INFO_OBJECT (avi,
4362 "Seeking to legacy index/first subindex at %" G_GUINT64_FORMAT,
4364 return perform_seek_to_offset (avi, offset);
4367 /* FIXME: we have to always return true so that we don't block the seek
4369 * Note: maybe it is OK to return true if we're still building the index */
4373 return avi_demux_handle_seek_push (avi, pad, event);
4377 * Helper for gst_avi_demux_invert()
4380 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
4382 memcpy (tmp, d1, bytes);
4383 memcpy (d1, d2, bytes);
4384 memcpy (d2, tmp, bytes);
4388 #define gst_avi_demux_is_uncompressed(fourcc) \
4389 (fourcc == GST_RIFF_DIB || \
4390 fourcc == GST_RIFF_rgb || \
4391 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
4394 * Invert DIB buffers... Takes existing buffer and
4395 * returns either the buffer or a new one (with old
4396 * one dereferenced).
4397 * FIXME: can't we preallocate tmp? and remember stride, bpp?
4400 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
4407 if (stream->strh->type != GST_RIFF_FCC_vids)
4410 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
4411 return buf; /* Ignore non DIB buffers */
4414 s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
4415 if (!gst_structure_get_int (s, "bpp", &bpp)) {
4416 GST_WARNING ("Failed to retrieve depth from caps");
4420 if (stream->strf.vids == NULL) {
4421 GST_WARNING ("Failed to retrieve vids for stream");
4425 h = stream->strf.vids->height;
4426 w = stream->strf.vids->width;
4427 stride = w * (bpp / 8);
4429 buf = gst_buffer_make_writable (buf);
4430 if (GST_BUFFER_SIZE (buf) < (stride * h)) {
4431 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
4435 tmp = g_malloc (stride);
4437 for (y = 0; y < h / 2; y++) {
4438 swap_line (GST_BUFFER_DATA (buf) + stride * y,
4439 GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
4448 gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
4449 GstClockTime timestamp, guint64 offset, gboolean keyframe)
4451 /* do not add indefinitely for open-ended streaming */
4452 if (G_UNLIKELY (avi->element_index && avi->seekable)) {
4453 GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
4454 G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
4455 gst_index_add_association (avi->element_index, avi->index_id,
4456 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT : GST_ASSOCIATION_FLAG_NONE,
4457 GST_FORMAT_TIME, timestamp, GST_FORMAT_BYTES, offset, NULL);
4458 /* well, current_total determines TIME and entry DEFAULT (frame #) ... */
4459 gst_index_add_association (avi->element_index, stream->index_id,
4460 GST_ASSOCIATION_FLAG_NONE,
4461 GST_FORMAT_TIME, stream->current_total, GST_FORMAT_BYTES, offset,
4462 GST_FORMAT_DEFAULT, stream->current_entry, NULL);
4467 * Returns the aggregated GstFlowReturn.
4469 static GstFlowReturn
4470 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
4474 gboolean unexpected = FALSE, not_linked = TRUE;
4476 /* store the value */
4477 stream->last_flow = ret;
4479 /* any other error that is not-linked or eos can be returned right away */
4480 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4483 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
4484 for (i = 0; i < avi->num_streams; i++) {
4485 GstAviStream *ostream = &avi->stream[i];
4487 ret = ostream->last_flow;
4488 /* no unexpected or unlinked, return */
4489 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4492 /* we check to see if we have at least 1 unexpected or all unlinked */
4493 unexpected |= (ret == GST_FLOW_UNEXPECTED);
4494 not_linked &= (ret == GST_FLOW_NOT_LINKED);
4496 /* when we get here, we all have unlinked or unexpected */
4498 ret = GST_FLOW_NOT_LINKED;
4499 else if (unexpected)
4500 ret = GST_FLOW_UNEXPECTED;
4502 GST_LOG_OBJECT (avi, "combined %s to return %s",
4503 gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret));
4507 /* move @stream to the next position in its index */
4508 static GstFlowReturn
4509 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
4512 guint old_entry, new_entry;
4514 old_entry = stream->current_entry;
4516 new_entry = old_entry + 1;
4518 /* see if we reached the end */
4519 if (new_entry >= stream->stop_entry) {
4520 if (avi->segment.rate < 0.0) {
4521 if (stream->step_entry == stream->start_entry) {
4522 /* we stepped all the way to the start, eos */
4523 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
4526 /* backwards, stop becomes step, find a new step */
4527 stream->stop_entry = stream->step_entry;
4528 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
4529 stream->stop_entry, TRUE);
4531 GST_DEBUG_OBJECT (avi,
4532 "reverse playback jump: start %u, step %u, stop %u",
4533 stream->start_entry, stream->step_entry, stream->stop_entry);
4535 /* and start from the previous keyframe now */
4536 new_entry = stream->step_entry;
4539 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
4544 if (new_entry != old_entry) {
4545 stream->current_entry = new_entry;
4546 stream->current_total = stream->index[new_entry].total;
4548 if (new_entry == old_entry + 1) {
4549 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
4550 old_entry, new_entry);
4551 /* we simply moved one step forwards, reuse current info */
4552 stream->current_timestamp = stream->current_ts_end;
4553 stream->current_offset = stream->current_offset_end;
4554 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4555 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
4557 /* we moved DISCONT, full update */
4558 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4559 &stream->current_timestamp, &stream->current_ts_end,
4560 &stream->current_offset, &stream->current_offset_end);
4561 /* and MARK discont for this stream */
4562 stream->last_flow = GST_FLOW_OK;
4563 stream->discont = TRUE;
4564 GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
4565 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4566 ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
4567 GST_TIME_ARGS (stream->current_timestamp),
4568 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4569 stream->current_offset_end);
4577 GST_DEBUG_OBJECT (avi, "we are EOS");
4578 /* setting current_timestamp to -1 marks EOS */
4579 stream->current_timestamp = -1;
4580 return GST_FLOW_UNEXPECTED;
4584 /* find the stream with the lowest current position when going forwards or with
4585 * the highest position when going backwards, this is the stream
4586 * we should push from next */
4588 gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
4590 guint64 min_time, max_time;
4591 guint stream_num, i;
4594 min_time = G_MAXUINT64;
4597 for (i = 0; i < avi->num_streams; i++) {
4599 GstAviStream *stream;
4601 stream = &avi->stream[i];
4603 /* ignore streams that finished */
4604 if (stream->last_flow == GST_FLOW_UNEXPECTED)
4607 position = stream->current_timestamp;
4609 /* position of -1 is EOS */
4610 if (position != -1) {
4611 if (rate > 0.0 && position < min_time) {
4612 min_time = position;
4614 } else if (rate < 0.0 && position >= max_time) {
4615 max_time = position;
4623 static GstFlowReturn
4624 gst_avi_demux_loop_data (GstAviDemux * avi)
4626 GstFlowReturn ret = GST_FLOW_OK;
4628 GstAviStream *stream;
4629 gboolean processed = FALSE;
4631 guint64 offset, size;
4632 GstClockTime timestamp, duration;
4633 guint64 out_offset, out_offset_end;
4635 GstAviIndexEntry *entry;
4638 stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
4641 if (G_UNLIKELY (stream_num == -1)) {
4642 GST_DEBUG_OBJECT (avi, "all streams are EOS");
4646 /* we have the stream now */
4647 stream = &avi->stream[stream_num];
4649 /* skip streams without pads */
4651 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
4656 /* get the timing info for the entry */
4657 timestamp = stream->current_timestamp;
4658 duration = stream->current_ts_end - timestamp;
4659 out_offset = stream->current_offset;
4660 out_offset_end = stream->current_offset_end;
4662 /* get the entry data info */
4663 entry = &stream->index[stream->current_entry];
4664 offset = entry->offset;
4666 keyframe = ENTRY_IS_KEYFRAME (entry);
4668 /* skip empty entries */
4670 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
4671 stream->current_entry, size, stream->pad);
4675 if (avi->segment.rate > 0.0) {
4676 /* only check this for fowards playback for now */
4677 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4678 && (timestamp > avi->segment.stop)) {
4683 GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
4684 G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
4685 stream_num, offset, offset, keyframe);
4687 /* FIXME, check large chunks and cut them up */
4689 /* pull in the data */
4690 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
4691 if (ret != GST_FLOW_OK)
4694 /* check for short buffers, this is EOS as well */
4695 if (GST_BUFFER_SIZE (buf) < size)
4698 /* invert the picture if needed */
4699 buf = gst_avi_demux_invert (stream, buf);
4701 /* mark non-keyframes */
4703 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4705 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4707 GST_BUFFER_TIMESTAMP (buf) = timestamp;
4708 GST_BUFFER_DURATION (buf) = duration;
4709 GST_BUFFER_OFFSET (buf) = out_offset;
4710 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
4712 /* mark discont when pending */
4713 if (stream->discont) {
4714 GST_DEBUG_OBJECT (avi, "setting DISCONT flag");
4715 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4716 stream->discont = FALSE;
4719 gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
4721 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4723 /* update current position in the segment */
4724 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, timestamp);
4726 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %u, ts %"
4727 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4728 ", off_end %" G_GUINT64_FORMAT,
4729 GST_BUFFER_SIZE (buf), GST_TIME_ARGS (timestamp),
4730 GST_TIME_ARGS (duration), out_offset, out_offset_end);
4732 ret = gst_pad_push (stream->pad, buf);
4734 /* mark as processed, we increment the frame and byte counters then
4735 * leave the while loop and return the GstFlowReturn */
4738 if (avi->segment.rate < 0) {
4739 if (timestamp > avi->segment.stop && ret == GST_FLOW_UNEXPECTED) {
4740 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4741 * we are at the end of the segment, so we just need to jump
4742 * back to the previous section. */
4743 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4748 /* move to next item */
4749 ret = gst_avi_demux_advance (avi, stream, ret);
4752 ret = gst_avi_demux_combine_flows (avi, stream, ret);
4753 } while (!processed);
4761 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
4762 ret = GST_FLOW_UNEXPECTED;
4767 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4768 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4769 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
4770 ret = GST_FLOW_UNEXPECTED;
4771 /* move to next stream */
4776 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
4777 " size=%" G_GUINT64_FORMAT, offset, size);
4782 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4783 ", only got %d/%" G_GUINT64_FORMAT " bytes (truncated file?)", offset,
4784 GST_BUFFER_SIZE (buf), size);
4785 gst_buffer_unref (buf);
4786 ret = GST_FLOW_UNEXPECTED;
4792 * Read data. If we have an index it delegates to
4793 * gst_avi_demux_process_next_entry().
4795 static GstFlowReturn
4796 gst_avi_demux_stream_data (GstAviDemux * avi)
4801 GstFlowReturn res = GST_FLOW_OK;
4802 GstFormat format = GST_FORMAT_TIME;
4804 if (G_UNLIKELY (avi->have_eos)) {
4805 /* Clean adapter, we're done */
4806 gst_adapter_clear (avi->adapter);
4807 return GST_FLOW_UNEXPECTED;
4810 if (G_UNLIKELY (avi->todrop)) {
4813 if ((drop = gst_adapter_available (avi->adapter))) {
4814 if (drop > avi->todrop)
4816 GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
4817 gst_adapter_flush (avi->adapter, drop);
4818 avi->todrop -= drop;
4819 avi->offset += drop;
4823 /* Iterate until need more data, so adapter won't grow too much */
4825 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4829 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4830 GST_FOURCC_ARGS (tag), size);
4832 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4833 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4834 GST_LOG ("Chunk ok");
4835 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4836 GST_DEBUG ("Found sub-index tag");
4837 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4838 /* accept 0 size buffer here */
4839 avi->abort_buffering = FALSE;
4840 GST_DEBUG (" skipping %d bytes for now", size);
4841 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4844 } else if (tag == GST_RIFF_TAG_RIFF) {
4845 /* RIFF tags can appear in ODML files, just jump over them */
4846 if (gst_adapter_available (avi->adapter) >= 12) {
4847 GST_DEBUG ("Found RIFF tag, skipping RIFF header");
4848 gst_adapter_flush (avi->adapter, 12);
4852 } else if (tag == GST_RIFF_TAG_idx1) {
4853 GST_DEBUG ("Found index tag");
4854 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4855 /* accept 0 size buffer here */
4856 avi->abort_buffering = FALSE;
4857 GST_DEBUG (" skipping %d bytes for now", size);
4858 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4861 } else if (tag == GST_RIFF_TAG_LIST) {
4862 /* movi chunks might be grouped in rec list */
4863 if (gst_adapter_available (avi->adapter) >= 12) {
4864 GST_DEBUG ("Found LIST tag, skipping LIST header");
4865 gst_adapter_flush (avi->adapter, 12);
4869 } else if (tag == GST_RIFF_TAG_JUNK || tag == GST_RIFF_TAG_JUNQ) {
4870 /* rec list might contain JUNK chunks */
4871 GST_DEBUG ("Found JUNK tag");
4872 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4873 /* accept 0 size buffer here */
4874 avi->abort_buffering = FALSE;
4875 GST_DEBUG (" skipping %d bytes for now", size);
4876 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4880 GST_DEBUG ("No more stream chunks, send EOS");
4881 avi->have_eos = TRUE;
4882 return GST_FLOW_UNEXPECTED;
4885 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4886 /* supposedly one hopes to catch a nicer chunk later on ... */
4887 /* FIXME ?? give up here rather than possibly ending up going
4888 * through the whole file */
4889 if (avi->abort_buffering) {
4890 avi->abort_buffering = FALSE;
4892 gst_adapter_flush (avi->adapter, 8);
4899 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4900 GST_FOURCC_ARGS (tag), size);
4902 stream_nr = CHUNKID_TO_STREAMNR (tag);
4904 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4906 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4907 stream_nr, GST_FOURCC_ARGS (tag));
4908 avi->offset += 8 + GST_ROUND_UP_2 (size);
4909 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4911 GstAviStream *stream;
4912 GstClockTime next_ts = 0;
4913 GstBuffer *buf = NULL;
4915 gboolean saw_desired_kf = stream_nr != avi->main_stream
4916 || avi->offset >= avi->seek_kf_offset;
4918 if (stream_nr == avi->main_stream && avi->offset == avi->seek_kf_offset) {
4919 GST_DEBUG_OBJECT (avi, "Desired keyframe reached");
4920 avi->seek_kf_offset = 0;
4923 if (saw_desired_kf) {
4924 gst_adapter_flush (avi->adapter, 8);
4927 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
4928 /* patch the size */
4929 GST_BUFFER_SIZE (buf) = size;
4934 GST_DEBUG_OBJECT (avi,
4935 "Desired keyframe not yet reached, flushing chunk");
4936 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4939 offset = avi->offset;
4940 avi->offset += 8 + GST_ROUND_UP_2 (size);
4942 stream = &avi->stream[stream_nr];
4944 /* set delay (if any)
4945 if (stream->strh->init_frames == stream->current_frame &&
4947 stream->delay = next_ts;
4950 /* parsing of corresponding header may have failed */
4951 if (G_UNLIKELY (!stream->pad)) {
4952 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
4953 GST_FOURCC_ARGS (tag));
4955 gst_buffer_unref (buf);
4957 /* get time of this buffer */
4958 gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
4959 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4962 gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
4964 /* increment our positions */
4965 stream->current_entry++;
4966 stream->current_total += size;
4968 /* update current position in the segment */
4969 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
4971 if (saw_desired_kf && buf) {
4972 GstClockTime dur_ts = 0;
4974 /* invert the picture if needed */
4975 buf = gst_avi_demux_invert (stream, buf);
4977 gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
4978 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4981 GST_BUFFER_TIMESTAMP (buf) = next_ts;
4982 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
4983 if (stream->strh->type == GST_RIFF_FCC_vids) {
4984 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
4985 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
4987 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4988 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
4991 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4992 GST_DEBUG_OBJECT (avi,
4993 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
4994 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
4995 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
4996 GST_TIME_ARGS (GST_BUFFER_DURATION (buf)),
4997 GST_BUFFER_OFFSET (buf), size, GST_PAD_NAME (stream->pad));
4999 /* mark discont when pending */
5000 if (G_UNLIKELY (stream->discont)) {
5001 GST_DEBUG_OBJECT (avi, "Setting DISCONT");
5002 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
5003 stream->discont = FALSE;
5005 res = gst_pad_push (stream->pad, buf);
5009 res = gst_avi_demux_combine_flows (avi, stream, res);
5010 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5011 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
5025 GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
5026 gst_format_get_name (format));
5027 res = GST_FLOW_ERROR;
5033 * Send pending tags.
5036 push_tag_lists (GstAviDemux * avi)
5044 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
5046 for (i = 0; i < avi->num_streams; i++) {
5047 GstAviStream *stream = &avi->stream[i];
5048 GstPad *pad = stream->pad;
5050 tags = stream->taglist;
5053 GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
5055 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (avi), pad, tags);
5056 stream->taglist = NULL;
5060 if (!(tags = avi->globaltags))
5061 tags = gst_tag_list_new ();
5063 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
5064 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
5066 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
5067 gst_element_found_tags (GST_ELEMENT_CAST (avi), tags);
5068 avi->globaltags = NULL;
5069 avi->got_tags = FALSE;
5073 gst_avi_demux_loop (GstPad * pad)
5076 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5078 switch (avi->state) {
5079 case GST_AVI_DEMUX_START:
5080 res = gst_avi_demux_stream_init_pull (avi);
5081 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5082 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5085 avi->state = GST_AVI_DEMUX_HEADER;
5087 case GST_AVI_DEMUX_HEADER:
5088 res = gst_avi_demux_stream_header_pull (avi);
5089 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5090 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5093 avi->state = GST_AVI_DEMUX_MOVI;
5095 case GST_AVI_DEMUX_MOVI:
5096 if (G_UNLIKELY (avi->close_seg_event)) {
5097 gst_avi_demux_push_event (avi, avi->close_seg_event);
5098 avi->close_seg_event = NULL;
5100 if (G_UNLIKELY (avi->seg_event)) {
5101 gst_avi_demux_push_event (avi, avi->seg_event);
5102 avi->seg_event = NULL;
5104 if (G_UNLIKELY (avi->got_tags)) {
5105 push_tag_lists (avi);
5107 /* process each index entry in turn */
5108 res = gst_avi_demux_loop_data (avi);
5110 /* pause when error */
5111 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5112 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
5117 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
5118 res = GST_FLOW_ERROR;
5127 gboolean push_eos = FALSE;
5128 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
5129 avi->segment_running = FALSE;
5130 gst_pad_pause_task (avi->sinkpad);
5133 if (res == GST_FLOW_UNEXPECTED) {
5134 /* handle end-of-stream/segment */
5135 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
5138 if ((stop = avi->segment.stop) == -1)
5139 stop = avi->segment.duration;
5141 GST_INFO_OBJECT (avi, "sending segment_done");
5143 gst_element_post_message
5144 (GST_ELEMENT_CAST (avi),
5145 gst_message_new_segment_done (GST_OBJECT_CAST (avi),
5146 GST_FORMAT_TIME, stop));
5150 } else if (res == GST_FLOW_NOT_LINKED || res < GST_FLOW_UNEXPECTED) {
5151 /* for fatal errors we post an error message, wrong-state is
5152 * not fatal because it happens due to flushes and only means
5153 * that we should stop now. */
5154 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
5155 (_("Internal data stream error.")),
5156 ("streaming stopped, reason %s", gst_flow_get_name (res)));
5160 GST_INFO_OBJECT (avi, "sending eos");
5161 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
5162 (res == GST_FLOW_UNEXPECTED)) {
5163 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
5164 (NULL), ("got eos but no streams (yet)"));
5171 static GstFlowReturn
5172 gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
5175 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5178 if (GST_BUFFER_IS_DISCONT (buf)) {
5179 GST_DEBUG_OBJECT (avi, "got DISCONT");
5180 gst_adapter_clear (avi->adapter);
5181 /* mark all streams DISCONT */
5182 for (i = 0; i < avi->num_streams; i++)
5183 avi->stream[i].discont = TRUE;
5186 GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
5187 gst_adapter_push (avi->adapter, buf);
5189 switch (avi->state) {
5190 case GST_AVI_DEMUX_START:
5191 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
5192 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5196 case GST_AVI_DEMUX_HEADER:
5197 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
5198 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5202 case GST_AVI_DEMUX_MOVI:
5203 if (G_UNLIKELY (avi->close_seg_event)) {
5204 gst_avi_demux_push_event (avi, avi->close_seg_event);
5205 avi->close_seg_event = NULL;
5207 if (G_UNLIKELY (avi->seg_event)) {
5208 gst_avi_demux_push_event (avi, avi->seg_event);
5209 avi->seg_event = NULL;
5211 if (G_UNLIKELY (avi->got_tags)) {
5212 push_tag_lists (avi);
5214 res = gst_avi_demux_stream_data (avi);
5216 case GST_AVI_DEMUX_SEEK:
5222 /* obtain and parse indexes */
5223 if (avi->stream[0].indexes && !gst_avi_demux_read_subindexes_push (avi))
5224 /* seek in subindex read function failed */
5227 if (!avi->stream[0].indexes && !avi->have_index
5228 && avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
5229 gst_avi_demux_stream_index_push (avi);
5231 if (avi->have_index) {
5232 /* use the indexes now to construct nice durations */
5233 gst_avi_demux_calculate_durations_from_index (avi);
5235 /* still parsing indexes */
5239 GST_OBJECT_LOCK (avi);
5240 event = avi->seek_event;
5241 avi->seek_event = NULL;
5242 GST_OBJECT_UNLOCK (avi);
5244 /* calculate and perform seek */
5245 if (!avi_demux_handle_seek_push (avi, avi->sinkpad, event))
5248 gst_event_unref (event);
5249 avi->state = GST_AVI_DEMUX_MOVI;
5253 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
5254 ("Illegal internal state"));
5255 res = GST_FLOW_ERROR;
5259 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
5260 gst_flow_get_name (res));
5262 if (G_UNLIKELY (avi->abort_buffering))
5263 goto abort_buffering;
5270 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("failed to read indexes"));
5271 return GST_FLOW_ERROR;
5275 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("push mode seek failed"));
5276 return GST_FLOW_ERROR;
5280 avi->abort_buffering = FALSE;
5281 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
5282 return GST_FLOW_ERROR;
5287 gst_avi_demux_sink_activate (GstPad * sinkpad)
5289 if (gst_pad_check_pull_range (sinkpad)) {
5290 GST_DEBUG ("going to pull mode");
5291 return gst_pad_activate_pull (sinkpad, TRUE);
5293 GST_DEBUG ("going to push (streaming) mode");
5294 return gst_pad_activate_push (sinkpad, TRUE);
5299 gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
5301 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
5304 avi->segment_running = TRUE;
5305 avi->streaming = FALSE;
5306 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
5309 avi->segment_running = FALSE;
5310 return gst_pad_stop_task (sinkpad);
5315 gst_avi_demux_activate_push (GstPad * pad, gboolean active)
5317 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
5320 GST_DEBUG ("avi: activating push/chain function");
5321 avi->streaming = TRUE;
5323 /* create index for some push based seeking if not provided */
5324 GST_OBJECT_LOCK (avi);
5325 if (!avi->element_index) {
5326 GST_DEBUG_OBJECT (avi, "creating index");
5327 avi->element_index = gst_index_factory_make ("memindex");
5329 GST_OBJECT_UNLOCK (avi);
5330 /* object lock might be taken again */
5331 gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (avi),
5335 GST_DEBUG ("avi: deactivating push/chain function");
5342 gst_avi_demux_set_index (GstElement * element, GstIndex * index)
5344 GstAviDemux *avi = GST_AVI_DEMUX (element);
5346 GST_OBJECT_LOCK (avi);
5347 if (avi->element_index)
5348 gst_object_unref (avi->element_index);
5350 avi->element_index = gst_object_ref (index);
5352 avi->element_index = NULL;
5354 GST_OBJECT_UNLOCK (avi);
5355 /* object lock might be taken again */
5357 gst_index_get_writer_id (index, GST_OBJECT_CAST (element), &avi->index_id);
5358 GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
5362 gst_avi_demux_get_index (GstElement * element)
5364 GstIndex *result = NULL;
5365 GstAviDemux *avi = GST_AVI_DEMUX (element);
5367 GST_OBJECT_LOCK (avi);
5368 if (avi->element_index)
5369 result = gst_object_ref (avi->element_index);
5370 GST_OBJECT_UNLOCK (avi);
5372 GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
5377 static GstStateChangeReturn
5378 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
5380 GstStateChangeReturn ret;
5381 GstAviDemux *avi = GST_AVI_DEMUX (element);
5383 switch (transition) {
5384 case GST_STATE_CHANGE_READY_TO_PAUSED:
5385 avi->streaming = FALSE;
5386 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
5392 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
5393 if (ret == GST_STATE_CHANGE_FAILURE)
5396 switch (transition) {
5397 case GST_STATE_CHANGE_PAUSED_TO_READY:
5398 avi->have_index = FALSE;
5399 gst_avi_demux_reset (avi);