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 GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
61 #define GST_CAT_DEFAULT avidemux_debug
63 static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
66 GST_STATIC_CAPS ("video/x-msvideo")
69 static void gst_avi_demux_base_init (GstAviDemuxClass * klass);
70 static void gst_avi_demux_class_init (GstAviDemuxClass * klass);
71 static void gst_avi_demux_init (GstAviDemux * avi);
72 static void gst_avi_demux_finalize (GObject * object);
74 static void gst_avi_demux_reset (GstAviDemux * avi);
77 static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
79 static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event);
80 static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
82 static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
85 static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
87 static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad);
88 static gboolean gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query);
89 static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
90 gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
92 static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
93 static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
95 static gboolean gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
97 static void gst_avi_demux_loop (GstPad * pad);
98 static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad);
99 static gboolean gst_avi_demux_sink_activate_pull (GstPad * sinkpad,
101 static gboolean gst_avi_demux_activate_push (GstPad * pad, gboolean active);
102 static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstBuffer * buf);
104 static void gst_avi_demux_set_index (GstElement * element, GstIndex * index);
105 static GstIndex *gst_avi_demux_get_index (GstElement * element);
106 static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
107 GstStateChange transition);
108 static void gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi);
109 static void gst_avi_demux_get_buffer_info (GstAviDemux * avi,
110 GstAviStream * stream, guint entry_n, GstClockTime * timestamp,
111 GstClockTime * ts_end, guint64 * offset, guint64 * offset_end);
113 static void gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf);
115 static GstElementClass *parent_class = NULL;
117 /* GObject methods */
120 gst_avi_demux_get_type (void)
122 static GType avi_demux_type = 0;
124 if (!avi_demux_type) {
125 static const GTypeInfo avi_demux_info = {
126 sizeof (GstAviDemuxClass),
127 (GBaseInitFunc) gst_avi_demux_base_init,
129 (GClassInitFunc) gst_avi_demux_class_init,
132 sizeof (GstAviDemux),
134 (GInstanceInitFunc) gst_avi_demux_init,
138 g_type_register_static (GST_TYPE_ELEMENT,
139 "GstAviDemux", &avi_demux_info, 0);
142 return avi_demux_type;
146 gst_avi_demux_base_init (GstAviDemuxClass * klass)
148 static const GstElementDetails gst_avi_demux_details =
149 GST_ELEMENT_DETAILS ("Avi demuxer",
151 "Demultiplex an avi file into audio and video",
152 "Erik Walthinsen <omega@cse.ogi.edu>\n"
153 "Wim Taymans <wim.taymans@chello.be>\n"
154 "Thijs Vermeir <thijsvermeir@gmail.com>");
155 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
156 GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl;
157 GstCaps *audcaps, *vidcaps, *subcaps;
159 audcaps = gst_riff_create_audio_template_caps ();
160 gst_caps_append (audcaps, gst_caps_new_simple ("audio/x-avi-unknown", NULL));
161 audiosrctempl = gst_pad_template_new ("audio_%02d",
162 GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
164 vidcaps = gst_riff_create_video_template_caps ();
165 gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
166 gst_caps_append (vidcaps, gst_caps_new_simple ("video/x-avi-unknown", NULL));
167 videosrctempl = gst_pad_template_new ("video_%02d",
168 GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
170 subcaps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
171 subsrctempl = gst_pad_template_new ("subtitle_%02d",
172 GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
173 gst_element_class_add_pad_template (element_class, audiosrctempl);
174 gst_element_class_add_pad_template (element_class, videosrctempl);
175 gst_element_class_add_pad_template (element_class, subsrctempl);
176 gst_element_class_add_pad_template (element_class,
177 gst_static_pad_template_get (&sink_templ));
178 gst_element_class_set_details (element_class, &gst_avi_demux_details);
182 gst_avi_demux_class_init (GstAviDemuxClass * klass)
184 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
185 GObjectClass *gobject_class = (GObjectClass *) klass;
187 GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
188 0, "Demuxer for AVI streams");
190 parent_class = g_type_class_peek_parent (klass);
192 gobject_class->finalize = gst_avi_demux_finalize;
193 gstelement_class->change_state =
194 GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
196 gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_avi_demux_set_index);
197 gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_avi_demux_get_index);
201 gst_avi_demux_init (GstAviDemux * avi)
203 avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
204 gst_pad_set_activate_function (avi->sinkpad,
205 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
206 gst_pad_set_activatepull_function (avi->sinkpad,
207 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_pull));
208 gst_pad_set_activatepush_function (avi->sinkpad,
209 GST_DEBUG_FUNCPTR (gst_avi_demux_activate_push));
210 gst_pad_set_chain_function (avi->sinkpad,
211 GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
212 gst_pad_set_event_function (avi->sinkpad,
213 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
214 gst_element_add_pad (GST_ELEMENT_CAST (avi), avi->sinkpad);
216 avi->adapter = gst_adapter_new ();
218 gst_avi_demux_reset (avi);
222 gst_avi_demux_finalize (GObject * object)
224 GstAviDemux *avi = GST_AVI_DEMUX (object);
226 GST_DEBUG ("AVI: finalize");
228 g_object_unref (avi->adapter);
230 G_OBJECT_CLASS (parent_class)->finalize (object);
234 gst_avi_demux_reset_stream (GstAviDemux * avi, GstAviStream * stream)
236 g_free (stream->strh);
237 g_free (stream->strf.data);
238 g_free (stream->name);
239 g_free (stream->index);
240 g_free (stream->indexes);
241 if (stream->initdata)
242 gst_buffer_unref (stream->initdata);
243 if (stream->extradata)
244 gst_buffer_unref (stream->extradata);
246 if (stream->exposed) {
247 gst_pad_set_active (stream->pad, FALSE);
248 gst_element_remove_pad (GST_ELEMENT_CAST (avi), stream->pad);
250 gst_object_unref (stream->pad);
252 if (stream->taglist) {
253 gst_tag_list_free (stream->taglist);
254 stream->taglist = NULL;
256 memset (stream, 0, sizeof (GstAviStream));
260 gst_avi_demux_reset (GstAviDemux * avi)
264 GST_DEBUG ("AVI: reset");
266 for (i = 0; i < avi->num_streams; i++)
267 gst_avi_demux_reset_stream (avi, &avi->stream[i]);
269 avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
270 avi->num_streams = 0;
271 avi->num_v_streams = 0;
272 avi->num_a_streams = 0;
273 avi->num_t_streams = 0;
274 avi->main_stream = -1;
276 avi->state = GST_AVI_DEMUX_START;
278 avi->building_index = FALSE;
280 avi->index_offset = 0;
284 if (avi->element_index)
285 gst_object_unref (avi->element_index);
286 avi->element_index = NULL;
288 if (avi->seg_event) {
289 gst_event_unref (avi->seg_event);
290 avi->seg_event = NULL;
292 if (avi->seek_event) {
293 gst_event_unref (avi->seek_event);
294 avi->seek_event = NULL;
298 gst_tag_list_free (avi->globaltags);
299 avi->globaltags = NULL;
301 avi->got_tags = TRUE; /* we always want to push global tags */
302 avi->have_eos = FALSE;
303 avi->seekable = TRUE;
305 gst_adapter_clear (avi->adapter);
307 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
311 /* GstElement methods */
314 static const GstFormat *
315 gst_avi_demux_get_src_formats (GstPad * pad)
317 GstAviStream *stream = gst_pad_get_element_private (pad);
319 static const GstFormat src_a_formats[] = {
325 static const GstFormat src_v_formats[] = {
331 return (stream->strh->type == GST_RIFF_FCC_auds ?
332 src_a_formats : src_v_formats);
336 /* assumes stream->strf.auds->av_bps != 0 */
337 static inline GstClockTime
338 avi_stream_convert_bytes_to_time_unchecked (GstAviStream * stream,
341 return gst_util_uint64_scale_int (bytes, GST_SECOND,
342 stream->strf.auds->av_bps);
345 static inline guint64
346 avi_stream_convert_time_to_bytes_unchecked (GstAviStream * stream,
349 return gst_util_uint64_scale_int (time, stream->strf.auds->av_bps,
353 /* assumes stream->strh->rate != 0 */
354 static inline GstClockTime
355 avi_stream_convert_frames_to_time_unchecked (GstAviStream * stream,
358 return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
362 static inline guint64
363 avi_stream_convert_time_to_frames_unchecked (GstAviStream * stream,
366 return gst_util_uint64_scale (time, stream->strh->rate,
367 stream->strh->scale * GST_SECOND);
371 gst_avi_demux_src_convert (GstPad * pad,
372 GstFormat src_format,
373 gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
375 GstAviStream *stream = gst_pad_get_element_private (pad);
379 "Received src_format:%s, src_value:%" G_GUINT64_FORMAT
380 ", dest_format:%s", gst_format_get_name (src_format), src_value,
381 gst_format_get_name (*dest_format));
383 if (G_UNLIKELY (src_format == *dest_format)) {
384 *dest_value = src_value;
387 if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
391 if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
392 (src_format == GST_FORMAT_BYTES
393 || *dest_format == GST_FORMAT_BYTES))) {
398 switch (src_format) {
399 case GST_FORMAT_TIME:
400 switch (*dest_format) {
401 case GST_FORMAT_BYTES:
402 *dest_value = gst_util_uint64_scale_int (src_value,
403 stream->strf.auds->av_bps, GST_SECOND);
405 case GST_FORMAT_DEFAULT:
407 gst_util_uint64_scale_round (src_value, stream->strh->rate,
408 stream->strh->scale * GST_SECOND);
415 case GST_FORMAT_BYTES:
416 switch (*dest_format) {
417 case GST_FORMAT_TIME:
418 if (stream->strf.auds->av_bps != 0) {
419 *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
429 case GST_FORMAT_DEFAULT:
430 switch (*dest_format) {
431 case GST_FORMAT_TIME:
433 avi_stream_convert_frames_to_time_unchecked (stream, src_value);
446 "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
447 gst_format_get_name (*dest_format), *dest_value);
451 static const GstQueryType *
452 gst_avi_demux_get_src_query_types (GstPad * pad)
454 static const GstQueryType src_types[] = {
466 gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query)
469 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
471 GstAviStream *stream = gst_pad_get_element_private (pad);
473 if (!stream->strh || !stream->strf.data)
474 return gst_pad_query_default (pad, query);
476 switch (GST_QUERY_TYPE (query)) {
477 case GST_QUERY_POSITION:{
480 GST_DEBUG ("pos query for stream %u: frames %u, bytes %u",
481 stream->num, stream->current_entry, stream->current_total);
483 /* FIXME, this looks clumsy */
484 if (stream->strh->type == GST_RIFF_FCC_auds) {
485 if (stream->is_vbr) {
487 pos = gst_util_uint64_scale ((gint64) stream->current_entry *
488 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
489 GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
490 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
491 } else if (stream->strf.auds->av_bps != 0) {
493 pos = gst_util_uint64_scale (stream->current_total, GST_SECOND,
494 (guint64) stream->strf.auds->av_bps);
495 GST_DEBUG_OBJECT (avi,
496 "CBR convert bytes %u, time %" GST_TIME_FORMAT,
497 stream->current_total, GST_TIME_ARGS (pos));
498 } else if (stream->idx_n != 0 && stream->total_bytes != 0) {
499 /* calculate timestamps based on percentage of length */
500 guint64 xlen = avi->avih->us_frame *
501 avi->avih->tot_frames * GST_USECOND;
503 if (stream->is_vbr) {
504 pos = gst_util_uint64_scale (xlen, stream->current_entry,
506 GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
507 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
509 pos = gst_util_uint64_scale (xlen, stream->current_total,
510 stream->total_bytes);
511 GST_DEBUG_OBJECT (avi,
512 "CBR perc convert bytes %u, time %" GST_TIME_FORMAT,
513 stream->current_total, GST_TIME_ARGS (pos));
520 if (stream->strh->rate != 0) {
521 pos = gst_util_uint64_scale ((guint64) stream->current_entry *
522 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
524 pos = stream->current_entry * avi->avih->us_frame * GST_USECOND;
528 GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
529 gst_query_set_position (query, GST_FORMAT_TIME, pos);
531 GST_WARNING ("pos query failed");
534 case GST_QUERY_DURATION:
537 GstClockTime duration;
539 /* only act on audio or video streams */
540 if (stream->strh->type != GST_RIFF_FCC_auds &&
541 stream->strh->type != GST_RIFF_FCC_vids) {
546 /* take stream duration, fall back to avih duration */
547 if ((duration = stream->duration) == -1)
548 duration = avi->duration;
550 gst_query_parse_duration (query, &fmt, NULL);
553 case GST_FORMAT_TIME:
554 gst_query_set_duration (query, fmt, duration);
556 case GST_FORMAT_DEFAULT:
559 GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
562 if (stream->idx_n >= 0)
563 gst_query_set_duration (query, fmt, stream->idx_n);
564 else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
565 duration, &fmt, &dur))
566 gst_query_set_duration (query, fmt, dur);
575 case GST_QUERY_SEEKING:{
578 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
579 if (fmt == GST_FORMAT_TIME) {
580 gboolean seekable = TRUE;
582 if (avi->streaming) {
583 seekable = avi->seekable;
586 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
587 0, stream->duration);
592 case GST_QUERY_CONVERT:{
593 GstFormat src_fmt, dest_fmt;
594 gint64 src_val, dest_val;
596 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
597 if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
599 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
601 res = gst_pad_query_default (pad, query);
605 res = gst_pad_query_default (pad, query);
609 gst_object_unref (avi);
614 static const GstEventMask *
615 gst_avi_demux_get_event_mask (GstPad * pad)
617 static const GstEventMask masks[] = {
618 {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
627 gst_avi_demux_seek_streams (GstAviDemux * avi, guint64 offset, gboolean before)
629 GstAviStream *stream;
630 GstIndexEntry *entry;
632 gint64 val, min = offset;
634 for (i = 0; i < avi->num_streams; i++) {
635 stream = &avi->stream[i];
637 entry = gst_index_get_assoc_entry (avi->element_index, stream->index_id,
638 before ? GST_INDEX_LOOKUP_BEFORE : GST_INDEX_LOOKUP_AFTER,
639 GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_BYTES, offset);
643 GST_DEBUG_OBJECT (avi, "stream %d, previous entry at %"
644 G_GUINT64_FORMAT, i, val);
645 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
653 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
654 stream->current_entry = 0;
655 stream->current_total = 0;
659 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
660 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT,
663 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &val);
664 stream->current_total = val;
665 gst_index_entry_assoc_map (entry, GST_FORMAT_DEFAULT, &val);
666 stream->current_entry = val;
673 gst_avi_demux_index_entry_offset_search (GstAviIndexEntry * entry,
676 if (entry->offset < *offset)
678 else if (entry->offset > *offset)
684 gst_avi_demux_seek_streams_index (GstAviDemux * avi, guint64 offset,
687 GstAviStream *stream;
688 GstAviIndexEntry *entry;
690 gint64 val, min = offset;
693 for (i = 0; i < avi->num_streams; i++) {
694 stream = &avi->stream[i];
697 gst_util_array_binary_search (stream->index, stream->idx_n,
698 sizeof (GstAviIndexEntry),
699 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
700 before ? GST_SEARCH_MODE_BEFORE : GST_SEARCH_MODE_AFTER, &offset, NULL);
703 index = entry - stream->index;
707 GST_DEBUG_OBJECT (avi,
708 "stream %d, previous entry at %" G_GUINT64_FORMAT, i, val);
709 val = stream->index[index].offset;
717 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
718 stream->current_entry = 0;
719 stream->current_total = 0;
723 val = stream->index[index].offset;
724 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT, i,
727 gst_avi_demux_get_buffer_info (avi, stream, index, (GstClockTime *) & val,
729 stream->current_total = val;
730 stream->current_entry = index;
736 #define GST_AVI_SEEK_PUSH_DISPLACE (4 * GST_SECOND)
739 gst_avi_demux_handle_sink_event (GstPad * pad, GstEvent * event)
742 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
744 GST_DEBUG_OBJECT (avi,
745 "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
747 switch (GST_EVENT_TYPE (event)) {
748 case GST_EVENT_NEWSEGMENT:
752 gint64 start, stop, time, offset = 0;
756 /* some debug output */
757 gst_segment_init (&segment, GST_FORMAT_UNDEFINED);
758 gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
759 &start, &stop, &time);
760 gst_segment_set_newsegment_full (&segment, update, rate, arate, format,
762 GST_DEBUG_OBJECT (avi,
763 "received format %d newsegment %" GST_SEGMENT_FORMAT, format,
766 /* chain will send initial newsegment after pads have been added */
767 if (avi->state != GST_AVI_DEMUX_MOVI) {
768 GST_DEBUG_OBJECT (avi, "still starting, eating event");
772 /* we only expect a BYTE segment, e.g. following a seek */
773 if (format != GST_FORMAT_BYTES) {
774 GST_DEBUG_OBJECT (avi, "unsupported segment format, ignoring");
778 if (avi->have_index) {
779 GstAviIndexEntry *entry;
781 GstAviStream *stream;
783 /* find which stream we're on */
785 stream = &avi->stream[i];
787 /* find the index for start bytes offset */
788 entry = gst_util_array_binary_search (stream->index,
789 stream->idx_n, sizeof (GstAviIndexEntry),
790 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
791 GST_SEARCH_MODE_BEFORE, &start, NULL);
796 index = entry - stream->index;
799 if (stream->index[index].offset == start)
801 } while (++i < avi->num_streams);
803 /* get the ts corresponding to start offset bytes for the stream */
804 gst_avi_demux_get_buffer_info (avi, stream, index,
805 (GstClockTime *) & time, NULL, NULL, NULL);
806 } else if (avi->element_index) {
807 GstIndexEntry *entry;
809 /* Let's check if we have an index entry for this position */
810 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
811 GST_INDEX_LOOKUP_AFTER, GST_ASSOCIATION_FLAG_NONE,
812 GST_FORMAT_BYTES, start);
814 /* we can not go where we have not yet been before ... */
816 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
820 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time);
821 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &start);
823 GST_WARNING_OBJECT (avi, "no index data, forcing EOS");
828 stop = GST_CLOCK_TIME_NONE;
830 /* set up segment and send downstream */
831 gst_segment_set_newsegment_full (&avi->segment, update, rate, arate,
832 GST_FORMAT_TIME, time, stop, time);
833 GST_DEBUG_OBJECT (avi, "Pushing newseg update %d, rate %g, "
834 "applied rate %g, format %d, start %" G_GINT64_FORMAT ", "
835 "stop %" G_GINT64_FORMAT, update, rate, arate, GST_FORMAT_TIME,
837 gst_avi_demux_push_event (avi,
838 gst_event_new_new_segment_full (update, rate, arate, GST_FORMAT_TIME,
841 GST_DEBUG_OBJECT (avi, "next chunk expected at %" G_GINT64_FORMAT, start);
843 /* adjust state for streaming thread accordingly */
844 avi->offset = offset;
846 gst_avi_demux_seek_streams_index (avi, offset, FALSE);
848 gst_avi_demux_seek_streams (avi, offset, FALSE);
850 /* set up streaming thread */
851 avi->offset = offset;
852 avi->todrop = start - offset;
855 gst_event_unref (event);
860 avi->have_eos = TRUE;
865 if (avi->state != GST_AVI_DEMUX_MOVI) {
866 gst_event_unref (event);
867 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
868 (NULL), ("got eos and didn't receive a complete header object"));
869 } else if (!gst_avi_demux_push_event (avi, event)) {
870 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
871 (NULL), ("got eos but no streams (yet)"));
875 case GST_EVENT_FLUSH_STOP:
879 gst_adapter_clear (avi->adapter);
880 avi->have_eos = FALSE;
881 for (i = 0; i < avi->num_streams; i++) {
882 avi->stream[i].last_flow = GST_FLOW_OK;
883 avi->stream[i].discont = TRUE;
885 /* fall through to default case so that the event gets passed downstream */
888 res = gst_pad_event_default (pad, event);
892 gst_object_unref (avi);
898 gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
901 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
903 GST_DEBUG_OBJECT (avi,
904 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
906 switch (GST_EVENT_TYPE (event)) {
908 if (!avi->streaming) {
909 res = gst_avi_demux_handle_seek (avi, pad, event);
911 res = gst_avi_demux_handle_seek_push (avi, pad, event);
913 gst_event_unref (event);
916 case GST_EVENT_NAVIGATION:
918 gst_event_unref (event);
921 res = gst_pad_event_default (pad, event);
925 gst_object_unref (avi);
930 /* streaming helper (push) */
933 * gst_avi_demux_peek_chunk_info:
935 * @tag: holder for tag
936 * @size: holder for tag size
938 * Peek next chunk info (tag and size)
940 * Returns: TRUE when one chunk info has been got
943 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
945 const guint8 *data = NULL;
947 if (gst_adapter_available (avi->adapter) < 8)
950 data = gst_adapter_peek (avi->adapter, 8);
951 *tag = GST_READ_UINT32_LE (data);
952 *size = GST_READ_UINT32_LE (data + 4);
958 * gst_avi_demux_peek_chunk:
960 * @tag: holder for tag
961 * @size: holder for tag size
963 * Peek enough data for one full chunk
965 * Returns: %TRUE when one chunk has been got
968 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
970 guint32 peek_size = 0;
973 if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
976 /* size 0 -> empty data buffer would surprise most callers,
977 * large size -> do not bother trying to squeeze that into adapter,
978 * so we throw poor man's exception, which can be caught if caller really
979 * wants to handle 0 size chunk */
980 if (!(*size) || (*size) >= (1 << 30))
983 peek_size = (*size + 1) & ~1;
984 available = gst_adapter_available (avi->adapter);
986 GST_DEBUG_OBJECT (avi,
987 "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
988 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
990 if (available < (8 + peek_size))
998 GST_INFO_OBJECT (avi, "Failed to peek");
1003 GST_INFO_OBJECT (avi,
1004 "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
1005 GST_FOURCC_ARGS (*tag));
1006 /* chain should give up */
1007 avi->abort_buffering = TRUE;
1012 GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
1013 available, 8 + peek_size);
1021 * gst_avi_demux_parse_file_header:
1022 * @element: caller element (used for errors/debug).
1023 * @buf: input data to be used for parsing.
1025 * "Open" a RIFF/AVI file. The buffer should be at least 12
1026 * bytes long. Takes ownership of @buf.
1028 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
1029 * Throws an error, caller should error out (fatal).
1032 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
1037 stamp = gst_util_get_timestamp ();
1039 /* riff_parse posts an error */
1040 if (!gst_riff_parse_file_header (element, buf, &doctype))
1043 if (doctype != GST_RIFF_RIFF_AVI)
1046 stamp = gst_util_get_timestamp () - stamp;
1047 GST_DEBUG_OBJECT (element, "header parsing took %" GST_TIME_FORMAT,
1048 GST_TIME_ARGS (stamp));
1055 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
1056 ("File is not an AVI file: %" GST_FOURCC_FORMAT,
1057 GST_FOURCC_ARGS (doctype)));
1063 * Read AVI file tag when streaming
1065 static GstFlowReturn
1066 gst_avi_demux_stream_init_push (GstAviDemux * avi)
1068 if (gst_adapter_available (avi->adapter) >= 12) {
1071 tmp = gst_adapter_take_buffer (avi->adapter, 12);
1073 GST_DEBUG ("Parsing avi header");
1074 if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), tmp)) {
1075 return GST_FLOW_ERROR;
1077 GST_DEBUG ("header ok");
1080 avi->state = GST_AVI_DEMUX_HEADER;
1088 static GstFlowReturn
1089 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
1092 GstBuffer *buf = NULL;
1094 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
1095 if (res != GST_FLOW_OK)
1097 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
1107 GST_DEBUG_OBJECT (avi, "error parsing file header");
1108 return GST_FLOW_ERROR;
1112 /* AVI header handling */
1114 * gst_avi_demux_parse_avih:
1115 * @avi: caller element (used for errors/debug).
1116 * @buf: input data to be used for parsing.
1117 * @avih: pointer to structure (filled in by function) containing
1118 * stream information (such as flags, number of streams, etc.).
1120 * Read 'avih' header. Discards buffer after use.
1122 * Returns: TRUE on success, FALSE otherwise. Throws an error if
1123 * the header is invalid. The caller should error out
1127 gst_avi_demux_parse_avih (GstAviDemux * avi,
1128 GstBuffer * buf, gst_riff_avih ** _avih)
1130 gst_riff_avih *avih;
1135 if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
1136 goto avih_too_small;
1138 avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1140 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1141 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
1142 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
1143 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
1144 avih->flags = GUINT32_FROM_LE (avih->flags);
1145 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
1146 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
1147 avih->streams = GUINT32_FROM_LE (avih->streams);
1148 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
1149 avih->width = GUINT32_FROM_LE (avih->width);
1150 avih->height = GUINT32_FROM_LE (avih->height);
1151 avih->scale = GUINT32_FROM_LE (avih->scale);
1152 avih->rate = GUINT32_FROM_LE (avih->rate);
1153 avih->start = GUINT32_FROM_LE (avih->start);
1154 avih->length = GUINT32_FROM_LE (avih->length);
1158 GST_INFO_OBJECT (avi, "avih tag found:");
1159 GST_INFO_OBJECT (avi, " us_frame %u", avih->us_frame);
1160 GST_INFO_OBJECT (avi, " max_bps %u", avih->max_bps);
1161 GST_INFO_OBJECT (avi, " pad_gran %u", avih->pad_gran);
1162 GST_INFO_OBJECT (avi, " flags 0x%08x", avih->flags);
1163 GST_INFO_OBJECT (avi, " tot_frames %u", avih->tot_frames);
1164 GST_INFO_OBJECT (avi, " init_frames %u", avih->init_frames);
1165 GST_INFO_OBJECT (avi, " streams %u", avih->streams);
1166 GST_INFO_OBJECT (avi, " bufsize %u", avih->bufsize);
1167 GST_INFO_OBJECT (avi, " width %u", avih->width);
1168 GST_INFO_OBJECT (avi, " height %u", avih->height);
1169 GST_INFO_OBJECT (avi, " scale %u", avih->scale);
1170 GST_INFO_OBJECT (avi, " rate %u", avih->rate);
1171 GST_INFO_OBJECT (avi, " start %u", avih->start);
1172 GST_INFO_OBJECT (avi, " length %u", avih->length);
1175 gst_buffer_unref (buf);
1177 if (avih->us_frame != 0 && avih->tot_frames != 0)
1179 (guint64) avih->us_frame * (guint64) avih->tot_frames * 1000;
1181 avi->duration = GST_CLOCK_TIME_NONE;
1183 GST_INFO_OBJECT (avi, " header duration %" GST_TIME_FORMAT,
1184 GST_TIME_ARGS (avi->duration));
1191 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No buffer"));
1196 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
1197 ("Too small avih (%d available, %d needed)",
1198 GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
1199 gst_buffer_unref (buf);
1205 * gst_avi_demux_parse_superindex:
1206 * @avi: caller element (used for debugging/errors).
1207 * @buf: input data to use for parsing.
1208 * @locations: locations in the file (byte-offsets) that contain
1209 * the actual indexes (see get_avi_demux_parse_subindex()).
1210 * The array ends with GST_BUFFER_OFFSET_NONE.
1212 * Reads superindex (openDML-2 spec stuff) from the provided data.
1214 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
1215 * on error, but they are not fatal.
1218 gst_avi_demux_parse_superindex (GstAviDemux * avi,
1219 GstBuffer * buf, guint64 ** _indexes)
1229 size = buf ? GST_BUFFER_SIZE (buf) : 0;
1233 data = GST_BUFFER_DATA (buf);
1235 /* check type of index. The opendml2 specs state that
1236 * there should be 4 dwords per array entry. Type can be
1237 * either frame or field (and we don't care). */
1238 if (GST_READ_UINT16_LE (data) != 4 ||
1239 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
1240 GST_WARNING_OBJECT (avi,
1241 "Superindex for stream has unexpected "
1242 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1243 GST_READ_UINT16_LE (data), data[2], data[3]);
1244 bpe = GST_READ_UINT16_LE (data) * 4;
1246 num = GST_READ_UINT32_LE (&data[4]);
1248 GST_DEBUG_OBJECT (avi, "got %d indexes", num);
1250 indexes = g_new (guint64, num + 1);
1251 for (i = 0; i < num; i++) {
1252 if (size < 24 + bpe * (i + 1))
1254 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1255 GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
1257 indexes[i] = GST_BUFFER_OFFSET_NONE;
1258 *_indexes = indexes;
1260 gst_buffer_unref (buf);
1267 GST_ERROR_OBJECT (avi,
1268 "Not enough data to parse superindex (%d available, 24 needed)", size);
1270 gst_buffer_unref (buf);
1275 /* add an entry to the index of a stream. @num should be an estimate of the
1276 * total amount of index entries for all streams and is used to dynamically
1277 * allocate memory for the index entries. */
1278 static inline gboolean
1279 gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
1280 guint num, GstAviIndexEntry * entry)
1282 /* ensure index memory */
1283 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
1284 guint idx_max = stream->idx_max;
1285 GstAviIndexEntry *new_idx;
1287 /* we need to make some more room */
1289 /* initial size guess, assume each stream has an equal amount of entries,
1290 * overshoot with at least 8K */
1291 idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
1293 idx_max += 8192 / sizeof (GstAviIndexEntry);
1294 GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
1295 stream->idx_max, idx_max);
1297 new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
1298 /* out of memory, if this fails stream->index is untouched. */
1299 if (G_UNLIKELY (!new_idx))
1302 stream->index = new_idx;
1303 stream->idx_max = idx_max;
1306 /* update entry total and stream stats. The entry total can be converted to
1307 * the timestamp of the entry easily. */
1308 if (stream->strh->type == GST_RIFF_FCC_auds) {
1311 if (stream->is_vbr) {
1312 entry->total = stream->total_blocks;
1314 entry->total = stream->total_bytes;
1316 blockalign = stream->strf.auds->blockalign;
1318 stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
1320 stream->total_blocks++;
1322 if (stream->is_vbr) {
1323 entry->total = stream->idx_n;
1325 entry->total = stream->total_bytes;
1328 stream->total_bytes += entry->size;
1329 if (ENTRY_IS_KEYFRAME (entry))
1330 stream->n_keyframes++;
1333 GST_LOG_OBJECT (avi,
1334 "Adding stream %u, index entry %d, kf %d, size %u "
1335 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
1336 stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
1338 stream->index[stream->idx_n++] = *entry;
1343 /* given @entry_n in @stream, calculate info such as timestamps and
1344 * offsets for the entry. */
1346 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1347 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1348 guint64 * offset, guint64 * offset_end)
1350 GstAviIndexEntry *entry;
1352 entry = &stream->index[entry_n];
1354 if (stream->is_vbr) {
1355 /* VBR stream next timestamp */
1356 if (stream->strh->type == GST_RIFF_FCC_auds) {
1359 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
1361 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1366 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
1368 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1371 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
1372 /* constant rate stream */
1375 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
1377 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
1378 entry->total + entry->size);
1380 if (stream->strh->type == GST_RIFF_FCC_vids) {
1381 /* video offsets are the frame number */
1385 *offset_end = entry_n + 1;
1387 /* no offsets for audio */
1395 /* collect and debug stats about the indexes for all streams.
1396 * This method is also responsible for filling in the stream duration
1397 * as measured by the amount of index entries.
1399 * Returns TRUE if the index is not empty, else FALSE */
1401 gst_avi_demux_do_index_stats (GstAviDemux * avi)
1403 guint total_idx = 0;
1405 #ifndef GST_DISABLE_GST_DEBUG
1406 guint total_max = 0;
1409 /* get stream stats now */
1410 for (i = 0; i < avi->num_streams; i++) {
1411 GstAviStream *stream;
1413 if (G_UNLIKELY (!(stream = &avi->stream[i])))
1415 if (G_UNLIKELY (!stream->strh))
1417 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
1420 /* we interested in the end_ts of the last entry, which is the total
1421 * duration of this stream */
1422 gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
1423 NULL, &stream->idx_duration, NULL, NULL);
1425 total_idx += stream->idx_n;
1426 #ifndef GST_DISABLE_GST_DEBUG
1427 total_max += stream->idx_max;
1429 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
1430 "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
1431 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
1432 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
1433 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
1434 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
1436 total_idx *= sizeof (GstAviIndexEntry);
1437 #ifndef GST_DISABLE_GST_DEBUG
1438 total_max *= sizeof (GstAviIndexEntry);
1440 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
1441 total_max, total_idx, total_max - total_idx);
1443 if (total_idx == 0) {
1444 GST_WARNING_OBJECT (avi, "Index is empty !");
1451 * gst_avi_demux_parse_subindex:
1453 * @buf: input data to use for parsing.
1454 * @stream: stream context.
1455 * @entries_list: a list (returned by the function) containing all the
1456 * indexes parsed in this specific subindex. The first
1457 * entry is also a pointer to allocated memory that needs
1458 * to be free´ed. May be NULL if no supported indexes were
1461 * Reads superindex (openDML-2 spec stuff) from the provided data.
1462 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1464 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1465 * throw an error, caller should bail out asap.
1468 gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
1480 size = GST_BUFFER_SIZE (buf);
1486 data = GST_BUFFER_DATA (buf);
1488 /* We don't support index-data yet */
1490 goto not_implemented;
1492 /* check type of index. The opendml2 specs state that
1493 * there should be 4 dwords per array entry. Type can be
1494 * either frame or field (and we don't care). */
1495 bpe = (data[2] & 0x01) ? 12 : 8;
1496 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1497 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1498 GST_WARNING_OBJECT (avi,
1499 "Superindex for stream %d has unexpected "
1500 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1501 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1502 bpe = GST_READ_UINT16_LE (data) * 4;
1504 num = GST_READ_UINT32_LE (&data[4]);
1505 baseoff = GST_READ_UINT64_LE (&data[12]);
1507 /* If there's nothing, just return ! */
1511 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1513 for (i = 0; i < num; i++) {
1514 GstAviIndexEntry entry;
1516 if (size < 24 + bpe * (i + 1))
1519 /* fill in offset and size. offset contains the keyframe flag in the
1521 entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1522 entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1524 if (stream->strh->type == GST_RIFF_FCC_auds) {
1525 /* all audio frames are keyframes */
1526 ENTRY_SET_KEYFRAME (&entry);
1528 /* else read flags */
1529 entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
1531 entry.size &= ~0x80000000;
1534 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
1537 gst_buffer_unref (buf);
1544 GST_ERROR_OBJECT (avi,
1545 "Not enough data to parse subindex (%d available, 24 needed)", size);
1546 gst_buffer_unref (buf);
1547 return TRUE; /* continue */
1551 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1552 ("Subindex-is-data is not implemented"));
1553 gst_buffer_unref (buf);
1558 GST_DEBUG_OBJECT (avi, "the index is empty");
1559 gst_buffer_unref (buf);
1564 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1565 ("Cannot allocate memory for %u*%u=%u bytes",
1566 (guint) sizeof (GstAviIndexEntry), num,
1567 (guint) sizeof (GstAviIndexEntry) * num));
1568 gst_buffer_unref (buf);
1574 * Create and push a flushing seek event upstream
1577 perform_seek_to_offset (GstAviDemux * demux, guint64 offset)
1582 GST_DEBUG_OBJECT (demux, "Seeking to %" G_GUINT64_FORMAT, offset);
1585 gst_event_new_seek (1.0, GST_FORMAT_BYTES,
1586 GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
1587 GST_SEEK_TYPE_NONE, -1);
1589 res = gst_pad_push_event (demux->sinkpad, event);
1592 demux->offset = offset;
1597 * Read AVI index when streaming
1600 gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
1602 guint32 tag = 0, size;
1603 GstBuffer *buf = NULL;
1606 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1608 if (avi->odml_subidxs[avi->odml_subidx] != avi->offset)
1611 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1614 /* this is the ODML chunk we expect */
1615 odml_stream = avi->odml_stream;
1617 if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + odml_stream / 10,
1618 '0' + odml_stream % 10)) &&
1619 (tag != GST_MAKE_FOURCC ('0' + odml_stream / 10,
1620 '0' + odml_stream % 10, 'i', 'x'))) {
1621 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1622 GST_FOURCC_ARGS (tag));
1626 avi->offset += 8 + GST_ROUND_UP_2 (size);
1627 /* flush chunk header so we get just the 'size' payload data */
1628 gst_adapter_flush (avi->adapter, 8);
1629 buf = gst_adapter_take_buffer (avi->adapter, size);
1631 if (!gst_avi_demux_parse_subindex (avi, &avi->stream[odml_stream], buf))
1634 /* we parsed the index, go to next subindex */
1637 if (avi->odml_subidxs[avi->odml_subidx] == GST_BUFFER_OFFSET_NONE) {
1638 /* we reached the end of the indexes for this stream, move to the next
1639 * stream to handle the first index */
1641 avi->odml_subidx = 0;
1643 if (avi->odml_stream < avi->num_streams) {
1644 /* there are more indexes */
1645 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
1647 /* we're done, get stream stats now */
1648 avi->have_index = gst_avi_demux_do_index_stats (avi);
1654 /* seek to next index */
1655 return perform_seek_to_offset (avi, avi->odml_subidxs[avi->odml_subidx]);
1662 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
1668 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1670 for (n = 0; n < avi->num_streams; n++) {
1671 GstAviStream *stream = &avi->stream[n];
1673 if (stream->indexes == NULL)
1676 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1677 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
1678 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1680 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1681 '0' + stream->num % 10)) &&
1682 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1683 '0' + stream->num % 10, 'i', 'x'))) {
1684 /* Some ODML files (created by god knows what muxer) have a ##ix format
1685 * instead of the 'official' ix##. They are still valid though. */
1686 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1687 GST_FOURCC_ARGS (tag));
1688 gst_buffer_unref (buf);
1692 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1696 g_free (stream->indexes);
1697 stream->indexes = NULL;
1699 /* get stream stats now */
1700 avi->have_index = gst_avi_demux_do_index_stats (avi);
1704 * gst_avi_demux_riff_parse_vprp:
1705 * @element: caller element (used for debugging/error).
1706 * @buf: input data to be used for parsing, stripped from header.
1707 * @vprp: a pointer (returned by this function) to a filled-in vprp
1708 * structure. Caller should free it.
1710 * Parses a video stream´s vprp. This function takes ownership of @buf.
1712 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1713 * should be skipped on error, but it is not fatal.
1716 gst_avi_demux_riff_parse_vprp (GstElement * element,
1717 GstBuffer * buf, gst_riff_vprp ** _vprp)
1719 gst_riff_vprp *vprp;
1722 g_return_val_if_fail (buf != NULL, FALSE);
1723 g_return_val_if_fail (_vprp != NULL, FALSE);
1725 if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1728 vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1730 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1731 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1732 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1733 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1734 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1735 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1736 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1737 vprp->width = GUINT32_FROM_LE (vprp->width);
1738 vprp->height = GUINT32_FROM_LE (vprp->height);
1739 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1743 /* calculate fields based on size */
1744 k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
1746 if (vprp->fields > k) {
1747 GST_WARNING_OBJECT (element,
1748 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1751 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1752 GST_WARNING_OBJECT (element,
1753 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1754 GST_RIFF_VPRP_VIDEO_FIELDS);
1755 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1757 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1758 for (k = 0; k < vprp->fields; k++) {
1759 gst_riff_vprp_video_field_desc *fd;
1761 fd = &vprp->field_info[k];
1762 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1763 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1764 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1765 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1766 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1767 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1768 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1769 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1774 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1775 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1776 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1777 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1778 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1779 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1780 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1781 vprp->aspect & 0xffff);
1782 GST_INFO_OBJECT (element, " width %d", vprp->width);
1783 GST_INFO_OBJECT (element, " height %d", vprp->height);
1784 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1785 for (k = 0; k < vprp->fields; k++) {
1786 gst_riff_vprp_video_field_desc *fd;
1788 fd = &(vprp->field_info[k]);
1789 GST_INFO_OBJECT (element, " field %u description:", k);
1790 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1791 fd->compressed_bm_height);
1792 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1793 fd->compressed_bm_width);
1794 GST_INFO_OBJECT (element, " valid_bm_height %d",
1795 fd->valid_bm_height);
1796 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1797 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1798 fd->valid_bm_x_offset);
1799 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1800 fd->valid_bm_y_offset);
1801 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1802 fd->video_x_t_offset);
1803 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1806 gst_buffer_unref (buf);
1815 GST_ERROR_OBJECT (element,
1816 "Too small vprp (%d available, at least %d needed)",
1817 GST_BUFFER_SIZE (buf),
1818 (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1819 gst_buffer_unref (buf);
1825 gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
1829 GST_DEBUG_OBJECT (avi, "force : %d", force);
1831 for (i = 0; i < avi->num_streams; i++) {
1832 GstAviStream *stream = &avi->stream[i];
1834 if (force || stream->idx_n != 0) {
1835 GST_LOG_OBJECT (avi, "Added pad %s with caps %" GST_PTR_FORMAT,
1836 GST_PAD_NAME (stream->pad), GST_PAD_CAPS (stream->pad));
1837 gst_element_add_pad ((GstElement *) avi, stream->pad);
1838 stream->exposed = TRUE;
1839 if (avi->main_stream == -1)
1840 avi->main_stream = i;
1842 GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
1844 gst_avi_demux_reset_stream (avi, stream);
1850 * gst_avi_demux_parse_stream:
1851 * @avi: calling element (used for debugging/errors).
1852 * @buf: input buffer used to parse the stream.
1854 * Parses all subchunks in a strl chunk (which defines a single
1855 * stream). Discards the buffer after use. This function will
1856 * increment the stream counter internally.
1858 * Returns: whether the stream was identified successfully.
1859 * Errors are not fatal. It does indicate the stream
1863 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1865 GstAviStream *stream;
1866 GstElementClass *klass;
1867 GstPadTemplate *templ;
1868 GstBuffer *sub = NULL;
1871 gchar *codec_name = NULL, *padname = NULL;
1872 const gchar *tag_name;
1873 GstCaps *caps = NULL;
1875 GstElement *element;
1876 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1877 gst_riff_vprp *vprp = NULL;
1879 element = GST_ELEMENT_CAST (avi);
1881 GST_DEBUG_OBJECT (avi, "Parsing stream");
1883 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1884 GST_WARNING_OBJECT (avi,
1885 "maximum no of streams (%d) exceeded, ignoring stream",
1886 GST_AVI_DEMUX_MAX_STREAMS);
1887 gst_buffer_unref (buf);
1888 /* not a fatal error, let's say */
1892 stream = &avi->stream[avi->num_streams];
1894 /* initial settings */
1895 stream->idx_duration = GST_CLOCK_TIME_NONE;
1896 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1897 stream->duration = GST_CLOCK_TIME_NONE;
1899 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1900 /* sub can be NULL if the chunk is empty */
1902 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1903 GST_FOURCC_ARGS (tag));
1907 case GST_RIFF_TAG_strh:
1909 gst_riff_strh *strh;
1912 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1915 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1916 /* ownership given away */
1918 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1922 strh = stream->strh;
1923 /* sanity check; stream header frame rate matches global header
1925 if (stream->strh->type == GST_RIFF_FCC_vids) {
1927 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1929 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1930 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1931 "frame duration = %d ms", strh->rate, strh->scale,
1932 (gint) (s_dur / GST_MSECOND));
1933 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1934 strh->rate = GST_SECOND / GST_USECOND;
1935 strh->scale = h_dur / GST_USECOND;
1936 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1937 strh->rate, strh->scale);
1940 /* determine duration as indicated by header */
1941 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1942 strh->scale, GST_SECOND, (guint64) strh->rate);
1943 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1944 GST_TIME_ARGS (stream->hdr_duration));
1945 if (stream->hdr_duration == 0)
1946 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1951 case GST_RIFF_TAG_strf:
1953 gboolean res = FALSE;
1956 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
1960 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
1963 switch (stream->strh->type) {
1964 case GST_RIFF_FCC_vids:
1965 stream->is_vbr = TRUE;
1966 res = gst_riff_parse_strf_vids (element, sub,
1967 &stream->strf.vids, &stream->extradata);
1969 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
1971 case GST_RIFF_FCC_auds:
1972 stream->is_vbr = (stream->strh->samplesize == 0)
1973 && stream->strh->scale > 1;
1975 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
1976 &stream->extradata);
1978 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
1979 stream->is_vbr, res);
1981 case GST_RIFF_FCC_iavs:
1982 stream->is_vbr = TRUE;
1983 res = gst_riff_parse_strf_iavs (element, sub,
1984 &stream->strf.iavs, &stream->extradata);
1986 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
1988 case GST_RIFF_FCC_txts:
1989 /* nothing to parse here */
1990 stream->is_vbr = (stream->strh->samplesize == 0)
1991 && (stream->strh->scale > 1);
1995 GST_ERROR_OBJECT (avi,
1996 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
1997 GST_FOURCC_ARGS (stream->strh->type));
2001 gst_buffer_unref (sub);
2009 case GST_RIFF_TAG_vprp:
2012 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
2016 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
2020 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
2024 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
2025 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
2026 /* not considered fatal */
2034 case GST_RIFF_TAG_strd:
2035 if (stream->initdata)
2036 gst_buffer_unref (stream->initdata);
2037 stream->initdata = sub;
2040 case GST_RIFF_TAG_strn:
2041 g_free (stream->name);
2044 g_strndup ((gchar *) GST_BUFFER_DATA (sub),
2045 (gsize) GST_BUFFER_SIZE (sub));
2046 gst_buffer_unref (sub);
2049 stream->name = g_strdup ("");
2051 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
2054 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
2055 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
2056 '0' + avi->num_streams % 10)) {
2057 g_free (stream->indexes);
2058 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
2059 stream->superindex = TRUE;
2063 GST_WARNING_OBJECT (avi,
2064 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
2065 GST_FOURCC_ARGS (tag));
2067 case GST_RIFF_TAG_JUNQ:
2068 case GST_RIFF_TAG_JUNK:
2072 gst_buffer_unref (sub);
2078 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
2083 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
2087 /* get class to figure out the template */
2088 klass = GST_ELEMENT_GET_CLASS (avi);
2090 /* we now have all info, let´s set up a pad and a caps and be done */
2091 /* create stream name + pad */
2092 switch (stream->strh->type) {
2093 case GST_RIFF_FCC_vids:{
2096 fourcc = (stream->strf.vids->compression) ?
2097 stream->strf.vids->compression : stream->strh->fcc_handler;
2098 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
2099 templ = gst_element_class_get_pad_template (klass, "video_%02d");
2100 caps = gst_riff_create_video_caps (fourcc, stream->strh,
2101 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
2103 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2104 GST_TYPE_FOURCC, fourcc, NULL);
2105 } else if (got_vprp && vprp) {
2106 guint32 aspect_n, aspect_d;
2109 aspect_n = vprp->aspect >> 16;
2110 aspect_d = vprp->aspect & 0xffff;
2111 /* calculate the pixel aspect ratio using w/h and aspect ratio */
2112 n = aspect_n * stream->strf.vids->height;
2113 d = aspect_d * stream->strf.vids->width;
2115 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
2117 /* very local, not needed elsewhere */
2121 tag_name = GST_TAG_VIDEO_CODEC;
2122 avi->num_v_streams++;
2125 case GST_RIFF_FCC_auds:{
2126 padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
2127 templ = gst_element_class_get_pad_template (klass, "audio_%02d");
2128 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
2129 stream->strh, stream->strf.auds, stream->extradata,
2130 stream->initdata, &codec_name);
2132 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
2133 G_TYPE_INT, stream->strf.auds->format, NULL);
2135 tag_name = GST_TAG_AUDIO_CODEC;
2136 avi->num_a_streams++;
2139 case GST_RIFF_FCC_iavs:{
2140 guint32 fourcc = stream->strh->fcc_handler;
2142 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
2143 templ = gst_element_class_get_pad_template (klass, "video_%02d");
2144 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
2145 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
2147 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2148 GST_TYPE_FOURCC, fourcc, NULL);
2150 tag_name = GST_TAG_VIDEO_CODEC;
2151 avi->num_v_streams++;
2154 case GST_RIFF_FCC_txts:{
2155 padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
2156 templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
2157 caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
2159 avi->num_t_streams++;
2163 g_assert_not_reached ();
2166 /* no caps means no stream */
2168 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
2172 GST_DEBUG_OBJECT (element, "codec-name=%s",
2173 (codec_name ? codec_name : "NULL"));
2174 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
2176 /* set proper settings and add it */
2178 gst_object_unref (stream->pad);
2179 pad = stream->pad = gst_pad_new_from_template (templ, padname);
2182 gst_pad_use_fixed_caps (pad);
2184 gst_pad_set_formats_function (pad,
2185 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
2186 gst_pad_set_event_mask_function (pad,
2187 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
2189 gst_pad_set_event_function (pad,
2190 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
2191 gst_pad_set_query_type_function (pad,
2192 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
2193 gst_pad_set_query_function (pad,
2194 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
2196 gst_pad_set_convert_function (pad,
2197 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
2200 if (avi->element_index)
2201 gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (stream->pad),
2204 stream->num = avi->num_streams;
2206 stream->start_entry = 0;
2207 stream->step_entry = 0;
2208 stream->stop_entry = 0;
2210 stream->current_entry = -1;
2211 stream->current_total = 0;
2213 stream->last_flow = GST_FLOW_OK;
2214 stream->discont = TRUE;
2216 stream->total_bytes = 0;
2217 stream->total_blocks = 0;
2218 stream->n_keyframes = 0;
2221 stream->idx_max = 0;
2223 gst_pad_set_element_private (pad, stream);
2226 gst_pad_set_caps (pad, caps);
2227 gst_pad_set_active (pad, TRUE);
2228 gst_caps_unref (caps);
2232 if (!stream->taglist)
2233 stream->taglist = gst_tag_list_new ();
2235 avi->got_tags = TRUE;
2237 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
2239 g_free (codec_name);
2242 gst_buffer_unref (buf);
2249 /* unref any mem that may be in use */
2251 gst_buffer_unref (buf);
2253 gst_buffer_unref (sub);
2255 g_free (codec_name);
2256 gst_avi_demux_reset_stream (avi, stream);
2263 * gst_avi_demux_parse_odml:
2264 * @avi: calling element (used for debug/error).
2265 * @buf: input buffer to be used for parsing.
2267 * Read an openDML-2.0 extension header. Fills in the frame number
2268 * in the avi demuxer object when reading succeeds.
2271 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
2275 GstBuffer *sub = NULL;
2277 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2280 case GST_RIFF_TAG_dmlh:{
2281 gst_riff_dmlh dmlh, *_dmlh;
2284 /* sub == NULL is possible and means an empty buffer */
2285 size = sub ? GST_BUFFER_SIZE (sub) : 0;
2288 if (size < sizeof (gst_riff_dmlh)) {
2289 GST_ERROR_OBJECT (avi,
2290 "DMLH entry is too small (%d bytes, %d needed)",
2291 size, (int) sizeof (gst_riff_dmlh));
2294 _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
2295 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
2297 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
2300 avi->avih->tot_frames = dmlh.totalframes;
2305 GST_WARNING_OBJECT (avi,
2306 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
2307 GST_FOURCC_ARGS (tag));
2309 case GST_RIFF_TAG_JUNQ:
2310 case GST_RIFF_TAG_JUNK:
2312 /* skip and move to next chunk */
2314 gst_buffer_unref (sub);
2321 gst_buffer_unref (buf);
2326 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
2328 return stream->idx_n - 1;
2331 /* find a previous entry in the index with the given flags */
2333 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
2334 guint last, gboolean keyframe)
2336 GstAviIndexEntry *entry;
2339 for (i = last; i > 0; i--) {
2340 entry = &stream->index[i - 1];
2341 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2349 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
2350 guint last, gboolean keyframe)
2352 GstAviIndexEntry *entry;
2355 for (i = last + 1; i < stream->idx_n; i++) {
2356 entry = &stream->index[i];
2357 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2361 return stream->idx_n - 1;
2365 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
2367 if (entry->total < *total)
2369 else if (entry->total > *total)
2375 * gst_avi_demux_index_for_time:
2377 * @stream: the stream
2378 * @time: a time position
2380 * Finds the index entry which time is less or equal than the requested time.
2381 * Try to avoid binary search when we can convert the time to an index
2382 * position directly (for example for video frames with a fixed duration).
2384 * Returns: the found position in the index.
2387 gst_avi_demux_index_for_time (GstAviDemux * avi,
2388 GstAviStream * stream, guint64 time)
2393 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
2395 /* easy (and common) cases */
2396 if (time == 0 || stream->idx_n == 0)
2398 if (time >= stream->idx_duration)
2399 return stream->idx_n - 1;
2401 /* figure out where we need to go. For that we convert the time to an
2402 * index entry or we convert it to a total and then do a binary search. */
2403 if (stream->is_vbr) {
2404 /* VBR stream next timestamp */
2405 if (stream->strh->type == GST_RIFF_FCC_auds) {
2406 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
2408 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
2411 /* constant rate stream */
2412 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
2416 GstAviIndexEntry *entry;
2418 /* no index, find index with binary search on total */
2419 GST_LOG_OBJECT (avi, "binary search for entry with total %"
2420 G_GUINT64_FORMAT, total);
2422 entry = gst_util_array_binary_search (stream->index,
2423 stream->idx_n, sizeof (GstAviIndexEntry),
2424 (GCompareDataFunc) gst_avi_demux_index_entry_search,
2425 GST_SEARCH_MODE_BEFORE, &total, NULL);
2427 if (entry == NULL) {
2428 GST_LOG_OBJECT (avi, "not found, assume index 0");
2431 index = entry - stream->index;
2432 GST_LOG_OBJECT (avi, "found at %u", index);
2435 GST_LOG_OBJECT (avi, "converted time to index %u", index);
2441 static inline GstAviStream *
2442 gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
2445 GstAviStream *stream;
2447 /* get the stream for this entry */
2448 stream_nr = CHUNKID_TO_STREAMNR (id);
2449 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2450 GST_WARNING_OBJECT (avi, "invalid stream nr %d", stream_nr);
2453 stream = &avi->stream[stream_nr];
2454 if (G_UNLIKELY (!stream->strh)) {
2455 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2462 * gst_avi_demux_parse_index:
2463 * @avi: calling element (used for debugging/errors).
2464 * @buf: buffer containing the full index.
2466 * Read index entries from the provided buffer.
2467 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2470 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2476 gst_riff_index_entry *index;
2478 GstAviStream *stream;
2479 GstAviIndexEntry entry;
2485 data = GST_BUFFER_DATA (buf);
2486 size = GST_BUFFER_SIZE (buf);
2488 stamp = gst_util_get_timestamp ();
2490 /* see how many items in the index */
2491 num = size / sizeof (gst_riff_index_entry);
2495 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2497 index = (gst_riff_index_entry *) data;
2498 pos_before = avi->offset;
2500 /* figure out if the index is 0 based or relative to the MOVI start */
2501 entry.offset = GST_READ_UINT32_LE (&index[0].offset);
2502 if (entry.offset < avi->offset) {
2503 avi->index_offset = avi->offset + 8;
2504 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2506 avi->index_offset = 0;
2507 GST_DEBUG ("index is 0 based");
2510 for (i = 0, n = 0; i < num; i++) {
2511 id = GST_READ_UINT32_LE (&index[i].id);
2512 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2514 /* some sanity checks */
2515 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2516 (entry.offset == 0 && n > 0)))
2519 /* get the stream for this entry */
2520 stream = gst_avi_demux_stream_for_id (avi, id);
2521 if (G_UNLIKELY (!stream))
2524 /* handle offset and size */
2525 entry.offset += avi->index_offset + 8;
2526 entry.size = GST_READ_UINT32_LE (&index[i].size);
2529 if (stream->strh->type == GST_RIFF_FCC_auds) {
2530 /* all audio frames are keyframes */
2531 ENTRY_SET_KEYFRAME (&entry);
2534 /* else read flags */
2535 flags = GST_READ_UINT32_LE (&index[i].flags);
2536 if (flags & GST_RIFF_IF_KEYFRAME) {
2537 ENTRY_SET_KEYFRAME (&entry);
2539 ENTRY_UNSET_KEYFRAME (&entry);
2544 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2549 gst_buffer_unref (buf);
2551 /* get stream stats now */
2552 avi->have_index = gst_avi_demux_do_index_stats (avi);
2554 stamp = gst_util_get_timestamp () - stamp;
2555 GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT,
2556 GST_TIME_ARGS (stamp));
2563 GST_DEBUG_OBJECT (avi, "empty index");
2564 gst_buffer_unref (buf);
2569 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2570 ("Cannot allocate memory for %u*%u=%u bytes",
2571 (guint) sizeof (GstAviIndexEntry), num,
2572 (guint) sizeof (GstAviIndexEntry) * num));
2573 gst_buffer_unref (buf);
2579 * gst_avi_demux_stream_index:
2580 * @avi: avi demuxer object.
2582 * Seeks to index and reads it.
2585 gst_avi_demux_stream_index (GstAviDemux * avi)
2588 guint64 offset = avi->offset;
2593 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2595 /* get chunk information */
2596 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2597 if (res != GST_FLOW_OK)
2599 else if (GST_BUFFER_SIZE (buf) < 8)
2602 /* check tag first before blindy trying to read 'size' bytes */
2603 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2604 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2605 if (tag == GST_RIFF_TAG_LIST) {
2606 /* this is the movi tag */
2607 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2608 (8 + GST_ROUND_UP_2 (size)));
2609 offset += 8 + GST_ROUND_UP_2 (size);
2610 gst_buffer_unref (buf);
2611 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2612 if (res != GST_FLOW_OK)
2614 else if (GST_BUFFER_SIZE (buf) < 8)
2616 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2617 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2620 if (tag != GST_RIFF_TAG_idx1)
2625 gst_buffer_unref (buf);
2627 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2629 /* read chunk, advance offset */
2630 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2631 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2634 GST_DEBUG ("will parse index chunk size %u for tag %"
2635 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2637 gst_avi_demux_parse_index (avi, buf);
2639 #ifndef GST_DISABLE_GST_DEBUG
2640 /* debug our indexes */
2643 GstAviStream *stream;
2645 for (i = 0; i < avi->num_streams; i++) {
2646 stream = &avi->stream[i];
2647 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2648 i, stream->idx_n, stream->total_bytes);
2657 GST_DEBUG_OBJECT (avi,
2658 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2663 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2664 gst_buffer_unref (buf);
2669 GST_WARNING_OBJECT (avi,
2670 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2671 GST_FOURCC_ARGS (tag));
2672 gst_buffer_unref (buf);
2677 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2678 gst_buffer_unref (buf);
2684 * gst_avi_demux_stream_index_push:
2685 * @avi: avi demuxer object.
2690 gst_avi_demux_stream_index_push (GstAviDemux * avi)
2692 guint64 offset = avi->idx1_offset;
2697 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2699 /* get chunk information */
2700 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
2703 /* check tag first before blindly trying to read 'size' bytes */
2704 if (tag == GST_RIFF_TAG_LIST) {
2705 /* this is the movi tag */
2706 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2707 (8 + GST_ROUND_UP_2 (size)));
2708 avi->idx1_offset = offset + 8 + GST_ROUND_UP_2 (size);
2709 /* issue seek to allow chain function to handle it and return! */
2710 perform_seek_to_offset (avi, avi->idx1_offset);
2714 if (tag != GST_RIFF_TAG_idx1)
2717 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2719 /* flush chunk header */
2720 gst_adapter_flush (avi->adapter, 8);
2721 /* read chunk payload */
2722 buf = gst_adapter_take_buffer (avi->adapter, size);
2725 /* advance offset */
2726 offset += 8 + GST_ROUND_UP_2 (size);
2728 GST_DEBUG ("will parse index chunk size %u for tag %"
2729 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2731 avi->offset = avi->first_movi_offset - 8;
2732 gst_avi_demux_parse_index (avi, buf);
2734 #ifndef GST_DISABLE_GST_DEBUG
2735 /* debug our indexes */
2738 GstAviStream *stream;
2740 for (i = 0; i < avi->num_streams; i++) {
2741 stream = &avi->stream[i];
2742 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2743 i, stream->idx_n, stream->total_bytes);
2752 GST_DEBUG_OBJECT (avi,
2753 "taking data from adapter failed: pos=%" G_GUINT64_FORMAT " size=%u",
2759 GST_WARNING_OBJECT (avi,
2760 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2761 GST_FOURCC_ARGS (tag));
2767 * gst_avi_demux_peek_tag:
2769 * Returns the tag and size of the next chunk
2771 static GstFlowReturn
2772 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2775 GstFlowReturn res = GST_FLOW_OK;
2776 GstBuffer *buf = NULL;
2780 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2781 if (res != GST_FLOW_OK)
2784 bufsize = GST_BUFFER_SIZE (buf);
2788 bufdata = GST_BUFFER_DATA (buf);
2790 *tag = GST_READ_UINT32_LE (bufdata);
2791 *size = GST_READ_UINT32_LE (bufdata + 4);
2793 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2794 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2795 *size, offset + 8, offset + 8 + (gint64) * size);
2798 gst_buffer_unref (buf);
2805 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2810 GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
2811 res = GST_FLOW_ERROR;
2817 * gst_avi_demux_next_data_buffer:
2819 * Returns the offset and size of the next buffer
2820 * Position is the position of the buffer (after tag and size)
2822 static GstFlowReturn
2823 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2824 guint32 * tag, guint * size)
2826 guint64 off = *offset;
2831 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2832 if (res != GST_FLOW_OK)
2834 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2835 off += 8 + 4; /* skip tag + size + subtag */
2847 * gst_avi_demux_stream_scan:
2848 * @avi: calling element (used for debugging/errors).
2850 * Scan the file for all chunks to "create" a new index.
2854 gst_avi_demux_stream_scan (GstAviDemux * avi)
2857 GstAviStream *stream;
2866 * - implement non-seekable source support.
2868 GST_DEBUG_OBJECT (avi, "Creating index");
2870 /* get the size of the file */
2871 format = GST_FORMAT_BYTES;
2872 if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
2876 /* guess the total amount of entries we expect */
2880 GstAviIndexEntry entry;
2883 /* start reading data buffers to find the id and offset */
2884 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2885 if (G_UNLIKELY (res != GST_FLOW_OK))
2889 stream = gst_avi_demux_stream_for_id (avi, tag);
2890 if (G_UNLIKELY (!stream))
2893 /* we can't figure out the keyframes, assume they all are */
2894 entry.flags = GST_AVI_KEYFRAME;
2898 /* and add to the index of this stream */
2899 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2903 /* update position */
2904 pos += GST_ROUND_UP_2 (size);
2905 if (G_UNLIKELY (pos > length)) {
2906 GST_WARNING_OBJECT (avi,
2907 "Stopping index lookup since we are further than EOF");
2913 avi->have_index = gst_avi_demux_do_index_stats (avi);
2920 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2921 ("Cannot allocate memory for %u*%u=%u bytes",
2922 (guint) sizeof (GstAviIndexEntry), num,
2923 (guint) sizeof (GstAviIndexEntry) * num));
2929 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
2933 GstAviStream *stream;
2935 total = GST_CLOCK_TIME_NONE;
2937 /* all streams start at a timestamp 0 */
2938 for (i = 0; i < avi->num_streams; i++) {
2939 GstClockTime duration, hduration;
2940 gst_riff_strh *strh;
2942 stream = &avi->stream[i];
2943 if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh)))
2946 /* get header duration for the stream */
2947 hduration = stream->hdr_duration;
2948 /* index duration calculated during parsing */
2949 duration = stream->idx_duration;
2951 /* now pick a good duration */
2952 if (GST_CLOCK_TIME_IS_VALID (duration)) {
2953 /* index gave valid duration, use that */
2954 GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT,
2955 stream, GST_TIME_ARGS (duration));
2957 /* fall back to header info to calculate a duration */
2958 duration = hduration;
2960 GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT,
2961 i, GST_TIME_ARGS (duration));
2962 /* set duration for the stream */
2963 stream->duration = duration;
2965 /* find total duration */
2966 if (total == GST_CLOCK_TIME_NONE ||
2967 (GST_CLOCK_TIME_IS_VALID (duration) && duration > total))
2971 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
2972 /* now update the duration for those streams where we had none */
2973 for (i = 0; i < avi->num_streams; i++) {
2974 stream = &avi->stream[i];
2976 if (!GST_CLOCK_TIME_IS_VALID (stream->duration)
2977 || stream->duration == 0) {
2978 stream->duration = total;
2980 GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT,
2981 stream, GST_TIME_ARGS (total));
2986 /* and set the total duration in the segment. */
2987 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
2988 GST_TIME_ARGS (total));
2990 gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
2993 /* returns FALSE if there are no pads to deliver event to,
2994 * otherwise TRUE (whatever the outcome of event sending),
2995 * takes ownership of the event. */
2997 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
2999 gboolean result = FALSE;
3002 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
3003 GST_EVENT_TYPE_NAME (event), avi->num_streams);
3005 for (i = 0; i < avi->num_streams; i++) {
3006 GstAviStream *stream = &avi->stream[i];
3010 gst_pad_push_event (stream->pad, gst_event_ref (event));
3013 gst_event_unref (event);
3018 gst_avi_demux_check_seekability (GstAviDemux * avi)
3021 gboolean seekable = FALSE;
3022 gint64 start = -1, stop = -1;
3024 query = gst_query_new_seeking (GST_FORMAT_BYTES);
3025 if (!gst_pad_peer_query (avi->sinkpad, query)) {
3026 GST_DEBUG_OBJECT (avi, "seeking query failed");
3030 gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
3032 /* try harder to query upstream size if we didn't get it the first time */
3033 if (seekable && stop == -1) {
3034 GstFormat fmt = GST_FORMAT_BYTES;
3036 GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
3037 gst_pad_query_peer_duration (avi->sinkpad, &fmt, &stop);
3040 /* if upstream doesn't know the size, it's likely that it's not seekable in
3041 * practice even if it technically may be seekable */
3042 if (seekable && (start != 0 || stop <= start)) {
3043 GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
3047 if (!avi->element_index) {
3048 GST_DEBUG_OBJECT (avi, "no index");
3053 GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
3054 G_GUINT64_FORMAT ")", seekable, start, stop);
3055 avi->seekable = seekable;
3057 gst_query_unref (query);
3061 * Read AVI headers when streaming
3063 static GstFlowReturn
3064 gst_avi_demux_stream_header_push (GstAviDemux * avi)
3066 GstFlowReturn ret = GST_FLOW_OK;
3071 GstBuffer *buf = NULL, *sub = NULL;
3075 GstTagList *tags = NULL;
3077 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
3079 switch (avi->header_state) {
3080 case GST_AVI_DEMUX_HEADER_TAG_LIST:
3081 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3082 avi->offset += 8 + GST_ROUND_UP_2 (size);
3083 if (tag != GST_RIFF_TAG_LIST)
3084 goto header_no_list;
3086 gst_adapter_flush (avi->adapter, 8);
3087 /* Find the 'hdrl' LIST tag */
3088 GST_DEBUG ("Reading %d bytes", size);
3089 buf = gst_adapter_take_buffer (avi->adapter, size);
3091 if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
3092 goto header_no_hdrl;
3096 gst_adapter_flush (avi->adapter, 1);
3098 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
3100 /* the hdrl starts with a 'avih' header */
3101 if (!gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3103 goto header_no_avih;
3105 if (tag != GST_RIFF_TAG_avih)
3106 goto header_no_avih;
3108 if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3109 goto header_wrong_avih;
3111 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
3113 /* now, read the elements from the header until the end */
3114 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3116 /* sub can be NULL on empty tags */
3121 case GST_RIFF_TAG_LIST:
3122 if (GST_BUFFER_SIZE (sub) < 4)
3125 switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
3126 case GST_RIFF_LIST_strl:
3127 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3129 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3130 ("failed to parse stream, ignoring"));
3135 case GST_RIFF_LIST_odml:
3136 gst_avi_demux_parse_odml (avi, sub);
3140 GST_WARNING_OBJECT (avi,
3141 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3142 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
3145 case GST_RIFF_TAG_JUNQ:
3146 case GST_RIFF_TAG_JUNK:
3151 gst_avi_demux_parse_idit (avi, sub);
3154 GST_WARNING_OBJECT (avi,
3155 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
3156 offset, GST_FOURCC_ARGS (tag));
3158 case GST_RIFF_TAG_JUNQ:
3159 case GST_RIFF_TAG_JUNK:
3161 /* move to next chunk */
3163 gst_buffer_unref (sub);
3168 gst_buffer_unref (buf);
3169 GST_DEBUG ("elements parsed");
3171 /* check parsed streams */
3172 if (avi->num_streams == 0) {
3174 } else if (avi->num_streams != avi->avih->streams) {
3175 GST_WARNING_OBJECT (avi,
3176 "Stream header mentioned %d streams, but %d available",
3177 avi->avih->streams, avi->num_streams);
3179 GST_DEBUG ("Get junk and info next");
3180 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
3182 /* Need more data */
3186 case GST_AVI_DEMUX_HEADER_INFO:
3187 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
3189 if (gst_adapter_available (avi->adapter) < 12)
3192 data = gst_adapter_peek (avi->adapter, 12);
3193 tag = GST_READ_UINT32_LE (data);
3194 size = GST_READ_UINT32_LE (data + 4);
3195 ltag = GST_READ_UINT32_LE (data + 8);
3197 if (tag == GST_RIFF_TAG_LIST) {
3199 case GST_RIFF_LIST_movi:
3200 gst_adapter_flush (avi->adapter, 12);
3201 if (!avi->first_movi_offset)
3202 avi->first_movi_offset = avi->offset;
3204 avi->idx1_offset = avi->offset + size - 4;
3206 case GST_RIFF_LIST_INFO:
3207 GST_DEBUG ("Found INFO chunk");
3208 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3209 GST_DEBUG ("got size %d", size);
3211 gst_adapter_flush (avi->adapter, 12);
3213 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
3216 gst_adapter_flush (avi->adapter, 1);
3217 gst_riff_parse_info (GST_ELEMENT_CAST (avi), buf, &tags);
3219 if (avi->globaltags) {
3220 gst_tag_list_insert (avi->globaltags, tags,
3221 GST_TAG_MERGE_REPLACE);
3223 avi->globaltags = tags;
3227 gst_buffer_unref (buf);
3229 avi->offset += GST_ROUND_UP_2 (size) - 4;
3231 GST_DEBUG ("skipping INFO LIST prefix");
3234 /* Need more data */
3239 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3240 avi->offset += 8 + GST_ROUND_UP_2 (size);
3241 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3242 // ??? goto iterate; ???
3244 /* Need more data */
3250 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3251 avi->offset += 8 + GST_ROUND_UP_2 (size);
3252 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3255 /* Need more data */
3262 GST_WARNING ("unhandled header state: %d", avi->header_state);
3267 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3268 avi->num_streams, avi->stream[0].indexes);
3270 GST_DEBUG ("Found movi chunk. Starting to stream data");
3271 avi->state = GST_AVI_DEMUX_MOVI;
3273 /* no indexes in push mode, but it still sets some variables */
3274 gst_avi_demux_calculate_durations_from_index (avi);
3276 gst_avi_demux_expose_streams (avi, TRUE);
3278 /* prepare all streams for index 0 */
3279 for (i = 0; i < avi->num_streams; i++)
3280 avi->stream[i].current_entry = 0;
3282 /* create initial NEWSEGMENT event */
3283 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3284 stop = avi->segment.duration;
3286 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3289 gst_event_unref (avi->seg_event);
3290 avi->seg_event = gst_event_new_new_segment_full
3291 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3292 avi->segment.start, stop, avi->segment.time);
3294 gst_avi_demux_check_seekability (avi);
3296 /* at this point we know all the streams and we can signal the no more
3298 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3299 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3306 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3307 return GST_FLOW_ERROR;
3311 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3312 ("Invalid AVI header (no LIST at start): %"
3313 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3314 return GST_FLOW_ERROR;
3318 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3319 ("Invalid AVI header (no hdrl at start): %"
3320 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3321 gst_buffer_unref (buf);
3322 return GST_FLOW_ERROR;
3326 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3327 ("Invalid AVI header (no avih at start): %"
3328 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3330 gst_buffer_unref (sub);
3332 gst_buffer_unref (buf);
3333 return GST_FLOW_ERROR;
3337 gst_buffer_unref (buf);
3338 return GST_FLOW_ERROR;
3343 gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d)
3346 date = g_date_new_dmy (d, m, y);
3347 if (!g_date_valid (date)) {
3349 GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
3354 if (avi->globaltags == NULL)
3355 avi->globaltags = gst_tag_list_new ();
3357 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
3363 gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data)
3368 ret = sscanf (data, "%d:%d:%d", &y, &m, &d);
3370 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3373 gst_avi_demux_add_date_tag (avi, y, m, d);
3377 get_month_num (gchar * data, guint size)
3379 if (g_ascii_strncasecmp (data, "jan", 3) == 0) {
3381 } else if (g_ascii_strncasecmp (data, "feb", 3) == 0) {
3383 } else if (g_ascii_strncasecmp (data, "mar", 3) == 0) {
3385 } else if (g_ascii_strncasecmp (data, "apr", 3) == 0) {
3387 } else if (g_ascii_strncasecmp (data, "may", 3) == 0) {
3389 } else if (g_ascii_strncasecmp (data, "jun", 3) == 0) {
3391 } else if (g_ascii_strncasecmp (data, "jul", 3) == 0) {
3393 } else if (g_ascii_strncasecmp (data, "aug", 3) == 0) {
3395 } else if (g_ascii_strncasecmp (data, "sep", 3) == 0) {
3397 } else if (g_ascii_strncasecmp (data, "oct", 3) == 0) {
3399 } else if (g_ascii_strncasecmp (data, "nov", 3) == 0) {
3401 } else if (g_ascii_strncasecmp (data, "dec", 3) == 0) {
3409 gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data)
3411 gint year, month, day;
3412 gint hour, min, sec;
3417 ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour,
3420 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3423 month = get_month_num (monthstr, strlen (monthstr));
3424 gst_avi_demux_add_date_tag (avi, year, month, day);
3428 gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
3430 gchar *data = (gchar *) GST_BUFFER_DATA (buf);
3431 guint size = GST_BUFFER_SIZE (buf);
3432 gchar *safedata = NULL;
3436 * http://www.eden-foundation.org/products/code/film_date_stamp/index.html
3438 * This tag could be in one of the below formats
3439 * 2005:08:17 11:42:43
3440 * THU OCT 26 16:46:04 2006
3441 * Mon Mar 3 09:44:56 2008
3443 * FIXME: Our date tag doesn't include hours
3446 /* skip eventual initial whitespace */
3447 while (size > 0 && g_ascii_isspace (data[0])) {
3456 /* make a safe copy to add a \0 to the end of the string */
3457 safedata = g_strndup (data, size);
3459 /* test if the first char is a alpha or a number */
3460 if (g_ascii_isdigit (data[0])) {
3461 gst_avi_demux_parse_idit_nums_only (avi, safedata);
3464 } else if (g_ascii_isalpha (data[0])) {
3465 gst_avi_demux_parse_idit_text (avi, safedata);
3473 GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
3477 * Read full AVI headers.
3479 static GstFlowReturn
3480 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3483 GstBuffer *buf, *sub = NULL;
3487 GstElement *element = GST_ELEMENT_CAST (avi);
3489 GstTagList *tags = NULL;
3491 stamp = gst_util_get_timestamp ();
3493 /* the header consists of a 'hdrl' LIST tag */
3494 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3495 if (res != GST_FLOW_OK)
3496 goto pull_range_failed;
3497 else if (tag != GST_RIFF_TAG_LIST)
3499 else if (GST_BUFFER_SIZE (buf) < 4)
3502 GST_DEBUG_OBJECT (avi, "parsing headers");
3504 /* Find the 'hdrl' LIST tag */
3505 while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
3506 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3507 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
3510 gst_buffer_unref (buf);
3512 /* read new chunk */
3513 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3514 if (res != GST_FLOW_OK)
3515 goto pull_range_failed;
3516 else if (tag != GST_RIFF_TAG_LIST)
3518 else if (GST_BUFFER_SIZE (buf) < 4)
3522 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3524 /* the hdrl starts with a 'avih' header */
3525 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3527 else if (tag != GST_RIFF_TAG_avih)
3529 else if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3532 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3534 /* now, read the elements from the header until the end */
3535 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3536 /* sub can be NULL on empty tags */
3541 case GST_RIFF_TAG_LIST:
3546 if (GST_BUFFER_SIZE (sub) < 4)
3549 data = GST_BUFFER_DATA (sub);
3550 fourcc = GST_READ_UINT32_LE (data);
3553 case GST_RIFF_LIST_strl:
3554 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3555 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3556 ("failed to parse stream, ignoring"));
3561 case GST_RIFF_LIST_odml:
3562 gst_avi_demux_parse_odml (avi, sub);
3565 case GST_RIFF_LIST_INFO:
3566 GST_BUFFER_DATA (sub) = data + 4;
3567 GST_BUFFER_SIZE (sub) -= 4;
3568 gst_riff_parse_info (element, sub, &tags);
3570 if (avi->globaltags) {
3571 gst_tag_list_insert (avi->globaltags, tags,
3572 GST_TAG_MERGE_REPLACE);
3574 avi->globaltags = tags;
3580 GST_WARNING_OBJECT (avi,
3581 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3582 GST_FOURCC_ARGS (fourcc));
3583 GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
3584 GST_BUFFER_SIZE (sub));
3586 case GST_RIFF_TAG_JUNQ:
3587 case GST_RIFF_TAG_JUNK:
3593 gst_avi_demux_parse_idit (avi, sub);
3596 GST_WARNING_OBJECT (avi,
3597 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3598 GST_FOURCC_ARGS (tag), offset);
3599 GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
3600 GST_BUFFER_SIZE (sub));
3602 case GST_RIFF_TAG_JUNQ:
3603 case GST_RIFF_TAG_JUNK:
3606 gst_buffer_unref (sub);
3611 gst_buffer_unref (buf);
3612 GST_DEBUG ("elements parsed");
3614 /* check parsed streams */
3615 if (avi->num_streams == 0)
3617 else if (avi->num_streams != avi->avih->streams) {
3618 GST_WARNING_OBJECT (avi,
3619 "Stream header mentioned %d streams, but %d available",
3620 avi->avih->streams, avi->num_streams);
3623 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3624 G_GUINT64_FORMAT, avi->offset);
3626 /* Now, find the data (i.e. skip all junk between header and data) */
3632 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3633 if (res != GST_FLOW_OK) {
3634 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3635 goto pull_range_failed;
3636 } else if (GST_BUFFER_SIZE (buf) < 12) {
3637 GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
3638 GST_BUFFER_SIZE (buf));
3639 gst_buffer_unref (buf);
3640 return GST_FLOW_ERROR;
3643 data = GST_BUFFER_DATA (buf);
3645 tag = GST_READ_UINT32_LE (data);
3646 size = GST_READ_UINT32_LE (data + 4);
3647 ltag = GST_READ_UINT32_LE (data + 8);
3649 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3650 GST_FOURCC_ARGS (tag), size);
3651 GST_MEMDUMP ("Tag content", data, GST_BUFFER_SIZE (buf));
3652 gst_buffer_unref (buf);
3655 case GST_RIFF_TAG_LIST:{
3657 case GST_RIFF_LIST_movi:
3658 GST_DEBUG_OBJECT (avi,
3659 "Reached the 'movi' tag, we're done with skipping");
3661 case GST_RIFF_LIST_INFO:
3663 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3665 if (res != GST_FLOW_OK) {
3666 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3667 goto pull_range_failed;
3669 GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
3671 GST_DEBUG ("skipping INFO LIST prefix");
3672 avi->offset += (4 - GST_ROUND_UP_2 (size));
3673 gst_buffer_unref (buf);
3677 sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
3678 gst_riff_parse_info (element, sub, &tags);
3680 if (avi->globaltags) {
3681 gst_tag_list_insert (avi->globaltags, tags,
3682 GST_TAG_MERGE_REPLACE);
3684 avi->globaltags = tags;
3689 gst_buffer_unref (sub);
3692 gst_buffer_unref (buf);
3693 /* gst_riff_read_chunk() has already advanced avi->offset */
3696 GST_WARNING_OBJECT (avi,
3697 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3698 GST_FOURCC_ARGS (ltag));
3699 avi->offset += 8 + GST_ROUND_UP_2 (size);
3705 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3706 GST_FOURCC_ARGS (tag));
3708 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3709 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3710 /* Only get buffer for debugging if the memdump is needed */
3711 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
3712 res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf);
3713 if (res != GST_FLOW_OK) {
3714 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3715 goto pull_range_failed;
3717 GST_MEMDUMP ("Junk", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
3718 gst_buffer_unref (buf);
3720 avi->offset += 8 + GST_ROUND_UP_2 (size);
3726 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3727 avi->num_streams, avi->stream[0].indexes);
3729 /* create or read stream index (for seeking) */
3730 if (avi->stream[0].indexes != NULL) {
3731 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3732 gst_avi_demux_read_subindexes_pull (avi);
3734 if (!avi->have_index) {
3735 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
3736 gst_avi_demux_stream_index (avi);
3738 /* still no index, scan */
3739 if (!avi->have_index) {
3740 gst_avi_demux_stream_scan (avi);
3742 /* still no index.. this is a fatal error for now.
3743 * FIXME, we should switch to plain push mode without seeking
3744 * instead of failing. */
3745 if (!avi->have_index)
3749 /* use the indexes now to construct nice durations */
3750 gst_avi_demux_calculate_durations_from_index (avi);
3752 gst_avi_demux_expose_streams (avi, FALSE);
3754 /* create initial NEWSEGMENT event */
3755 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3756 stop = avi->segment.duration;
3758 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3760 /* do initial seek to the default segment values */
3761 gst_avi_demux_do_seek (avi, &avi->segment);
3763 /* prepare initial segment */
3765 gst_event_unref (avi->seg_event);
3766 avi->seg_event = gst_event_new_new_segment_full
3767 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3768 avi->segment.start, stop, avi->segment.time);
3770 stamp = gst_util_get_timestamp () - stamp;
3771 GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT,
3772 GST_TIME_ARGS (stamp));
3774 /* at this point we know all the streams and we can signal the no more
3776 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3777 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3784 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3785 ("Invalid AVI header (no LIST at start): %"
3786 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3787 gst_buffer_unref (buf);
3788 return GST_FLOW_ERROR;
3792 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3793 ("Invalid AVI header (no hdrl at start): %"
3794 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3795 gst_buffer_unref (buf);
3796 return GST_FLOW_ERROR;
3800 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3801 ("Invalid AVI header (no avih at start): %"
3802 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3804 gst_buffer_unref (sub);
3805 gst_buffer_unref (buf);
3806 return GST_FLOW_ERROR;
3810 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3811 ("Invalid AVI header (cannot parse avih at start)"));
3812 gst_buffer_unref (buf);
3813 return GST_FLOW_ERROR;
3817 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3818 return GST_FLOW_ERROR;
3822 GST_WARNING ("file without or too big index");
3823 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3824 ("Could not get/create index"));
3825 return GST_FLOW_ERROR;
3829 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3830 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3831 return GST_FLOW_ERROR;
3835 /* move a stream to @index */
3837 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
3838 GstSegment * segment, guint index)
3840 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
3842 if (segment->rate < 0.0) {
3844 /* Because we don't know the frame order we need to push from the prev keyframe
3845 * to the next keyframe. If there is a smart decoder downstream he will notice
3846 * that there are too many encoded frames send and return UNEXPECTED when there
3847 * are enough decoded frames to fill the segment. */
3848 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
3850 /* FIXME, we go back to 0, we should look at segment.start. We will however
3851 * stop earlier when the see the timestamp < segment.start */
3852 stream->start_entry = 0;
3853 stream->step_entry = index;
3854 stream->current_entry = index;
3855 stream->stop_entry = next_key;
3857 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
3858 stream->start_entry, stream->step_entry, stream->stop_entry);
3860 stream->start_entry = index;
3861 stream->step_entry = index;
3862 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
3864 if (stream->current_entry != index) {
3865 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
3866 stream->current_entry, index);
3867 stream->current_entry = index;
3868 stream->discont = TRUE;
3871 /* update the buffer info */
3872 gst_avi_demux_get_buffer_info (avi, stream, index,
3873 &stream->current_timestamp, &stream->current_ts_end,
3874 &stream->current_offset, &stream->current_offset_end);
3876 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
3877 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3878 ", off_end %" G_GUINT64_FORMAT, index,
3879 GST_TIME_ARGS (stream->current_timestamp),
3880 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3881 stream->current_offset_end);
3883 GST_DEBUG_OBJECT (avi, "Seeking to offset %" G_GUINT64_FORMAT,
3884 stream->index[index].offset);
3888 * Do the actual seeking.
3891 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3893 GstClockTime seek_time;
3896 GstAviStream *stream;
3898 seek_time = segment->last_stop;
3899 keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3901 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
3902 " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
3904 /* FIXME, this code assumes the main stream with keyframes is stream 0,
3905 * which is mostly correct... */
3906 stream = &avi->stream[avi->main_stream];
3908 /* get the entry index for the requested position */
3909 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
3910 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
3912 /* check if we are already on a keyframe */
3913 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
3914 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
3915 /* now go to the previous keyframe, this is where we should start
3917 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
3918 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
3921 /* move the main stream to this position */
3922 gst_avi_demux_move_stream (avi, stream, segment, index);
3925 /* when seeking to a keyframe, we update the result seek time
3926 * to the time of the keyframe. */
3927 seek_time = stream->current_timestamp;
3928 GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
3929 GST_TIME_ARGS (seek_time));
3932 /* the seek time is also the last_stop and stream time when going
3934 segment->last_stop = seek_time;
3935 if (segment->rate > 0.0)
3936 segment->time = seek_time;
3938 /* now set DISCONT and align the other streams */
3939 for (i = 0; i < avi->num_streams; i++) {
3940 GstAviStream *ostream;
3942 ostream = &avi->stream[i];
3943 if ((ostream == stream) || (ostream->index == NULL))
3946 /* get the entry index for the requested position */
3947 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
3949 /* move to previous keyframe */
3950 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
3951 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
3953 gst_avi_demux_move_stream (avi, ostream, segment, index);
3955 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
3956 GST_TIME_ARGS (seek_time));
3962 * Handle seek event in pull mode.
3965 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
3970 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
3974 GstSegment seeksegment = { 0, };
3978 GST_DEBUG_OBJECT (avi, "doing seek with event");
3980 gst_event_parse_seek (event, &rate, &format, &flags,
3981 &cur_type, &cur, &stop_type, &stop);
3983 /* we have to have a format as the segment format. Try to convert
3985 if (format != GST_FORMAT_TIME) {
3986 GstFormat fmt = GST_FORMAT_TIME;
3987 gboolean res = TRUE;
3989 if (cur_type != GST_SEEK_TYPE_NONE)
3990 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
3991 if (res && stop_type != GST_SEEK_TYPE_NONE)
3992 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
3998 GST_DEBUG_OBJECT (avi,
3999 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
4000 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
4001 /* FIXME: can we do anything with rate!=1.0 */
4003 GST_DEBUG_OBJECT (avi, "doing seek without event");
4008 /* save flush flag */
4009 flush = flags & GST_SEEK_FLAG_FLUSH;
4012 GstEvent *fevent = gst_event_new_flush_start ();
4014 /* for a flushing seek, we send a flush_start on all pads. This will
4015 * eventually stop streaming with a WRONG_STATE. We can thus eventually
4016 * take the STREAM_LOCK. */
4017 GST_DEBUG_OBJECT (avi, "sending flush start");
4018 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4019 gst_pad_push_event (avi->sinkpad, fevent);
4021 /* a non-flushing seek, we PAUSE the task so that we can take the
4023 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
4024 gst_pad_pause_task (avi->sinkpad);
4027 /* wait for streaming to stop */
4028 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
4029 GST_PAD_STREAM_LOCK (avi->sinkpad);
4031 /* copy segment, we need this because we still need the old
4032 * segment when we close the current segment. */
4033 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4036 GST_DEBUG_OBJECT (avi, "configuring seek");
4037 gst_segment_set_seek (&seeksegment, rate, format, flags,
4038 cur_type, cur, stop_type, stop, &update);
4040 /* do the seek, seeksegment.last_stop contains the new position, this
4041 * actually never fails. */
4042 gst_avi_demux_do_seek (avi, &seeksegment);
4045 GstEvent *fevent = gst_event_new_flush_stop ();
4047 GST_DEBUG_OBJECT (avi, "sending flush stop");
4048 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4049 gst_pad_push_event (avi->sinkpad, fevent);
4050 } else if (avi->segment_running) {
4053 /* we are running the current segment and doing a non-flushing seek,
4054 * close the segment first based on the last_stop. */
4055 GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
4056 " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
4057 seg = gst_event_new_new_segment_full (TRUE,
4058 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4059 avi->segment.start, avi->segment.last_stop, avi->segment.time);
4060 gst_avi_demux_push_event (avi, seg);
4063 /* now update the real segment info */
4064 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
4066 /* post the SEGMENT_START message when we do segmented playback */
4067 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4068 gst_element_post_message (GST_ELEMENT_CAST (avi),
4069 gst_message_new_segment_start (GST_OBJECT_CAST (avi),
4070 avi->segment.format, avi->segment.last_stop));
4073 /* prepare for streaming again */
4074 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
4075 stop = avi->segment.duration;
4077 /* queue the segment event for the streaming thread. */
4079 gst_event_unref (avi->seg_event);
4080 if (avi->segment.rate > 0.0) {
4081 /* forwards goes from last_stop to stop */
4082 avi->seg_event = gst_event_new_new_segment_full (FALSE,
4083 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4084 avi->segment.last_stop, stop, avi->segment.time);
4086 /* reverse goes from start to last_stop */
4087 avi->seg_event = gst_event_new_new_segment_full (FALSE,
4088 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4089 avi->segment.start, avi->segment.last_stop, avi->segment.time);
4092 if (!avi->streaming) {
4093 avi->segment_running = TRUE;
4094 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4097 /* reset the last flow and mark discont, seek is always DISCONT */
4098 for (i = 0; i < avi->num_streams; i++) {
4099 GST_DEBUG_OBJECT (avi, "marking DISCONT");
4100 avi->stream[i].last_flow = GST_FLOW_OK;
4101 avi->stream[i].discont = TRUE;
4103 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
4110 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4116 * Handle seek event in push mode.
4119 avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4124 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4127 GstAviStream *stream;
4132 /* check we have the index */
4133 if (!avi->have_index) {
4134 GST_DEBUG_OBJECT (avi, "no seek index built, seek aborted.");
4137 GST_DEBUG_OBJECT (avi, "doing push-based seek with event");
4140 gst_event_parse_seek (event, &rate, &format, &flags,
4141 &cur_type, &cur, &stop_type, &stop);
4143 if (format != GST_FORMAT_TIME) {
4144 GstFormat fmt = GST_FORMAT_TIME;
4145 gboolean res = TRUE;
4147 if (cur_type != GST_SEEK_TYPE_NONE)
4148 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
4149 if (res && stop_type != GST_SEEK_TYPE_NONE)
4150 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
4152 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4159 keyframe = !!(flags & GST_SEEK_FLAG_KEY_UNIT);
4161 GST_DEBUG_OBJECT (avi,
4162 "Seek requested: ts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
4163 ", kf %u, rate %lf", GST_TIME_ARGS (cur), GST_TIME_ARGS (stop), keyframe,
4165 /* FIXME: can we do anything with rate!=1.0 */
4167 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4168 * which is mostly correct... */
4169 str_num = avi->main_stream;
4170 stream = &avi->stream[str_num];
4172 /* get the entry index for the requested position */
4173 index = gst_avi_demux_index_for_time (avi, stream, cur);
4174 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT,
4175 str_num, index, GST_TIME_ARGS (cur));
4177 /* check if we are already on a keyframe */
4178 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4179 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4180 /* now go to the previous keyframe, this is where we should start
4182 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4183 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index);
4186 gst_avi_demux_get_buffer_info (avi, stream, index,
4187 &stream->current_timestamp, &stream->current_ts_end,
4188 &stream->current_offset, &stream->current_offset_end);
4190 /* re-use cur to be the timestamp of the seek as it _will_ be */
4191 cur = stream->current_timestamp;
4193 min_offset = avi->seek_kf_offset = stream->index[index].offset;
4195 GST_DEBUG_OBJECT (avi,
4196 "Seek to: ts %" GST_TIME_FORMAT " (on str %u, idx %u, offset %"
4197 G_GUINT64_FORMAT ")", GST_TIME_ARGS (stream->current_timestamp), str_num,
4200 for (n = 0; n < avi->num_streams; n++) {
4201 GstAviStream *str = &avi->stream[n];
4204 if (n == avi->main_stream)
4207 /* get the entry index for the requested position */
4208 idx = gst_avi_demux_index_for_time (avi, str, cur);
4209 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT, n,
4210 idx, GST_TIME_ARGS (cur));
4212 /* check if we are already on a keyframe */
4213 if (!ENTRY_IS_KEYFRAME (&str->index[idx])) {
4214 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4215 /* now go to the previous keyframe, this is where we should start
4217 idx = gst_avi_demux_index_prev (avi, str, idx, TRUE);
4218 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", idx);
4221 gst_avi_demux_get_buffer_info (avi, str, idx,
4222 &str->current_timestamp, &str->current_ts_end,
4223 &str->current_offset, &str->current_offset_end);
4225 if (str->index[idx].offset < min_offset) {
4226 min_offset = str->index[idx].offset;
4227 GST_DEBUG_OBJECT (avi,
4228 "Found an earlier offset at %" G_GUINT64_FORMAT ", str %u",
4236 GST_DEBUG_OBJECT (avi,
4237 "Seek performed: str %u, offset %" G_GUINT64_FORMAT ", idx %u, ts %"
4238 GST_TIME_FORMAT ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4239 ", off_end %" G_GUINT64_FORMAT, str_num, min_offset, index,
4240 GST_TIME_ARGS (stream->current_timestamp),
4241 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4242 stream->current_offset_end);
4244 if (!perform_seek_to_offset (avi,
4245 min_offset - (avi->stream[0].indexes ? 8 : 0))) {
4246 GST_DEBUG_OBJECT (avi, "seek event failed!");
4254 * Handle whether we can perform the seek event or if we have to let the chain
4255 * function handle seeks to build the seek indexes first.
4258 gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
4261 /* check for having parsed index already */
4262 if (!avi->have_index) {
4264 gboolean building_index;
4266 GST_OBJECT_LOCK (avi);
4267 /* handle the seek event in the chain function */
4268 avi->state = GST_AVI_DEMUX_SEEK;
4270 /* copy the event */
4271 if (avi->seek_event)
4272 gst_event_unref (avi->seek_event);
4273 avi->seek_event = gst_event_ref (event);
4275 /* set the building_index flag so that only one thread can setup the
4276 * structures for index seeking. */
4277 building_index = avi->building_index;
4278 if (!building_index) {
4279 avi->building_index = TRUE;
4280 if (avi->stream[0].indexes) {
4281 avi->odml_stream = 0;
4282 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
4283 offset = avi->odml_subidxs[0];
4285 offset = avi->idx1_offset;
4288 GST_OBJECT_UNLOCK (avi);
4290 if (!building_index) {
4291 /* seek to the first subindex or legacy index */
4292 GST_INFO_OBJECT (avi,
4293 "Seeking to legacy index/first subindex at %" G_GUINT64_FORMAT,
4295 return perform_seek_to_offset (avi, offset);
4298 /* FIXME: we have to always return true so that we don't block the seek
4300 * Note: maybe it is OK to return true if we're still building the index */
4304 return avi_demux_handle_seek_push (avi, pad, event);
4308 * Helper for gst_avi_demux_invert()
4311 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
4313 memcpy (tmp, d1, bytes);
4314 memcpy (d1, d2, bytes);
4315 memcpy (d2, tmp, bytes);
4319 #define gst_avi_demux_is_uncompressed(fourcc) \
4320 (fourcc == GST_RIFF_DIB || \
4321 fourcc == GST_RIFF_rgb || \
4322 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
4325 * Invert DIB buffers... Takes existing buffer and
4326 * returns either the buffer or a new one (with old
4327 * one dereferenced).
4328 * FIXME: can't we preallocate tmp? and remember stride, bpp?
4331 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
4338 if (stream->strh->type != GST_RIFF_FCC_vids)
4341 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
4342 return buf; /* Ignore non DIB buffers */
4345 s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
4346 if (!gst_structure_get_int (s, "bpp", &bpp)) {
4347 GST_WARNING ("Failed to retrieve depth from caps");
4351 if (stream->strf.vids == NULL) {
4352 GST_WARNING ("Failed to retrieve vids for stream");
4356 h = stream->strf.vids->height;
4357 w = stream->strf.vids->width;
4358 stride = w * (bpp / 8);
4360 buf = gst_buffer_make_writable (buf);
4361 if (GST_BUFFER_SIZE (buf) < (stride * h)) {
4362 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
4366 tmp = g_malloc (stride);
4368 for (y = 0; y < h / 2; y++) {
4369 swap_line (GST_BUFFER_DATA (buf) + stride * y,
4370 GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
4379 gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
4380 GstClockTime timestamp, guint64 offset, gboolean keyframe)
4382 /* do not add indefinitely for open-ended streaming */
4383 if (G_UNLIKELY (avi->element_index && avi->seekable)) {
4384 GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
4385 G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
4386 gst_index_add_association (avi->element_index, avi->index_id,
4387 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT : GST_ASSOCIATION_FLAG_NONE,
4388 GST_FORMAT_TIME, timestamp, GST_FORMAT_BYTES, offset, NULL);
4389 /* well, current_total determines TIME and entry DEFAULT (frame #) ... */
4390 gst_index_add_association (avi->element_index, stream->index_id,
4391 GST_ASSOCIATION_FLAG_NONE,
4392 GST_FORMAT_TIME, stream->current_total, GST_FORMAT_BYTES, offset,
4393 GST_FORMAT_DEFAULT, stream->current_entry, NULL);
4398 * Returns the aggregated GstFlowReturn.
4400 static GstFlowReturn
4401 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
4405 gboolean unexpected = FALSE, not_linked = TRUE;
4407 /* store the value */
4408 stream->last_flow = ret;
4410 /* any other error that is not-linked or eos can be returned right away */
4411 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4414 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
4415 for (i = 0; i < avi->num_streams; i++) {
4416 GstAviStream *ostream = &avi->stream[i];
4418 ret = ostream->last_flow;
4419 /* no unexpected or unlinked, return */
4420 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4423 /* we check to see if we have at least 1 unexpected or all unlinked */
4424 unexpected |= (ret == GST_FLOW_UNEXPECTED);
4425 not_linked &= (ret == GST_FLOW_NOT_LINKED);
4427 /* when we get here, we all have unlinked or unexpected */
4429 ret = GST_FLOW_NOT_LINKED;
4430 else if (unexpected)
4431 ret = GST_FLOW_UNEXPECTED;
4433 GST_LOG_OBJECT (avi, "combined %s to return %s",
4434 gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret));
4438 /* move @stream to the next position in its index */
4439 static GstFlowReturn
4440 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
4443 guint old_entry, new_entry;
4445 old_entry = stream->current_entry;
4447 new_entry = old_entry + 1;
4449 /* see if we reached the end */
4450 if (new_entry > stream->stop_entry) {
4451 if (avi->segment.rate < 0.0) {
4452 if (stream->step_entry == stream->start_entry) {
4453 /* we stepped all the way to the start, eos */
4454 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
4457 /* backwards, stop becomes step, find a new step */
4458 stream->stop_entry = stream->step_entry;
4459 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
4460 stream->stop_entry, TRUE);
4462 GST_DEBUG_OBJECT (avi,
4463 "reverse playback jump: start %u, step %u, stop %u",
4464 stream->start_entry, stream->step_entry, stream->stop_entry);
4466 /* and start from the previous keyframe now */
4467 new_entry = stream->step_entry;
4470 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
4475 if (new_entry != old_entry) {
4476 stream->current_entry = new_entry;
4477 stream->current_total = stream->index[new_entry].total;
4479 if (new_entry == old_entry + 1) {
4480 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
4481 old_entry, new_entry);
4482 /* we simply moved one step forwards, reuse current info */
4483 stream->current_timestamp = stream->current_ts_end;
4484 stream->current_offset = stream->current_offset_end;
4485 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4486 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
4488 /* we moved DISCONT, full update */
4489 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4490 &stream->current_timestamp, &stream->current_ts_end,
4491 &stream->current_offset, &stream->current_offset_end);
4492 /* and MARK discont for this stream */
4493 stream->last_flow = GST_FLOW_OK;
4494 stream->discont = TRUE;
4495 GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
4496 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4497 ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
4498 GST_TIME_ARGS (stream->current_timestamp),
4499 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4500 stream->current_offset_end);
4508 GST_DEBUG_OBJECT (avi, "we are EOS");
4509 /* setting current_timestamp to -1 marks EOS */
4510 stream->current_timestamp = -1;
4511 return GST_FLOW_UNEXPECTED;
4515 /* find the stream with the lowest current position when going forwards or with
4516 * the highest position when going backwards, this is the stream
4517 * we should push from next */
4519 gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
4521 guint64 min_time, max_time;
4522 guint stream_num, i;
4525 min_time = G_MAXUINT64;
4528 for (i = 0; i < avi->num_streams; i++) {
4530 GstAviStream *stream;
4532 stream = &avi->stream[i];
4534 /* ignore streams that finished */
4535 if (stream->last_flow == GST_FLOW_UNEXPECTED)
4538 position = stream->current_timestamp;
4540 /* position of -1 is EOS */
4541 if (position != -1) {
4542 if (rate > 0.0 && position < min_time) {
4543 min_time = position;
4545 } else if (rate < 0.0 && position >= max_time) {
4546 max_time = position;
4554 static GstFlowReturn
4555 gst_avi_demux_loop_data (GstAviDemux * avi)
4557 GstFlowReturn ret = GST_FLOW_OK;
4559 GstAviStream *stream;
4560 gboolean processed = FALSE;
4562 guint64 offset, size;
4563 GstClockTime timestamp, duration;
4564 guint64 out_offset, out_offset_end;
4566 GstAviIndexEntry *entry;
4569 stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
4572 if (G_UNLIKELY (stream_num == -1)) {
4573 GST_DEBUG_OBJECT (avi, "all streams are EOS");
4577 /* we have the stream now */
4578 stream = &avi->stream[stream_num];
4580 /* skip streams without pads */
4582 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
4587 /* get the timing info for the entry */
4588 timestamp = stream->current_timestamp;
4589 duration = stream->current_ts_end - timestamp;
4590 out_offset = stream->current_offset;
4591 out_offset_end = stream->current_offset_end;
4593 /* get the entry data info */
4594 entry = &stream->index[stream->current_entry];
4595 offset = entry->offset;
4597 keyframe = ENTRY_IS_KEYFRAME (entry);
4599 /* skip empty entries */
4601 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
4602 stream->current_entry, size, stream->pad);
4606 if (avi->segment.rate > 0.0) {
4607 /* only check this for fowards playback for now */
4608 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4609 && (timestamp > avi->segment.stop)) {
4614 GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
4615 G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
4616 stream_num, offset, offset, keyframe);
4618 /* FIXME, check large chunks and cut them up */
4620 /* pull in the data */
4621 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
4622 if (ret != GST_FLOW_OK)
4625 /* check for short buffers, this is EOS as well */
4626 if (GST_BUFFER_SIZE (buf) < size)
4629 /* invert the picture if needed */
4630 buf = gst_avi_demux_invert (stream, buf);
4632 /* mark non-keyframes */
4634 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4636 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4638 GST_BUFFER_TIMESTAMP (buf) = timestamp;
4639 GST_BUFFER_DURATION (buf) = duration;
4640 GST_BUFFER_OFFSET (buf) = out_offset;
4641 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
4643 /* mark discont when pending */
4644 if (stream->discont) {
4645 GST_DEBUG_OBJECT (avi, "setting DISCONT flag");
4646 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4647 stream->discont = FALSE;
4650 gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
4652 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4654 /* update current position in the segment */
4655 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, timestamp);
4657 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %u, ts %"
4658 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4659 ", off_end %" G_GUINT64_FORMAT,
4660 GST_BUFFER_SIZE (buf), GST_TIME_ARGS (timestamp),
4661 GST_TIME_ARGS (duration), out_offset, out_offset_end);
4663 ret = gst_pad_push (stream->pad, buf);
4665 /* mark as processed, we increment the frame and byte counters then
4666 * leave the while loop and return the GstFlowReturn */
4669 if (avi->segment.rate < 0) {
4670 if (timestamp > avi->segment.stop && ret == GST_FLOW_UNEXPECTED) {
4671 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4672 * we are at the end of the segment, so we just need to jump
4673 * back to the previous section. */
4674 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4679 /* move to next item */
4680 ret = gst_avi_demux_advance (avi, stream, ret);
4683 ret = gst_avi_demux_combine_flows (avi, stream, ret);
4684 } while (!processed);
4692 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
4693 ret = GST_FLOW_UNEXPECTED;
4698 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4699 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4700 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
4701 ret = GST_FLOW_UNEXPECTED;
4702 /* move to next stream */
4707 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
4708 " size=%" G_GUINT64_FORMAT, offset, size);
4713 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4714 ", only got %d/%" G_GUINT64_FORMAT " bytes (truncated file?)", offset,
4715 GST_BUFFER_SIZE (buf), size);
4716 gst_buffer_unref (buf);
4717 ret = GST_FLOW_UNEXPECTED;
4723 * Read data. If we have an index it delegates to
4724 * gst_avi_demux_process_next_entry().
4726 static GstFlowReturn
4727 gst_avi_demux_stream_data (GstAviDemux * avi)
4732 GstFlowReturn res = GST_FLOW_OK;
4733 GstFormat format = GST_FORMAT_TIME;
4735 if (G_UNLIKELY (avi->have_eos)) {
4736 /* Clean adapter, we're done */
4737 gst_adapter_clear (avi->adapter);
4738 return GST_FLOW_UNEXPECTED;
4741 if (G_UNLIKELY (avi->todrop)) {
4744 if ((drop = gst_adapter_available (avi->adapter))) {
4745 if (drop > avi->todrop)
4747 GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
4748 gst_adapter_flush (avi->adapter, drop);
4749 avi->todrop -= drop;
4750 avi->offset += drop;
4754 /* Iterate until need more data, so adapter won't grow too much */
4756 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4760 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4761 GST_FOURCC_ARGS (tag), size);
4763 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4764 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4765 GST_LOG ("Chunk ok");
4766 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4767 GST_DEBUG ("Found sub-index tag");
4768 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4769 /* accept 0 size buffer here */
4770 avi->abort_buffering = FALSE;
4771 GST_DEBUG (" skipping %d bytes for now", size);
4772 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4775 } else if (tag == GST_RIFF_TAG_RIFF) {
4776 /* RIFF tags can appear in ODML files, just jump over them */
4777 if (gst_adapter_available (avi->adapter) >= 12) {
4778 GST_DEBUG ("Found RIFF tag, skipping RIFF header");
4779 gst_adapter_flush (avi->adapter, 12);
4783 } else if (tag == GST_RIFF_TAG_idx1) {
4784 GST_DEBUG ("Found index tag");
4785 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4786 /* accept 0 size buffer here */
4787 avi->abort_buffering = FALSE;
4788 GST_DEBUG (" skipping %d bytes for now", size);
4789 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4792 } else if (tag == GST_RIFF_TAG_LIST) {
4793 /* movi chunks might be grouped in rec list */
4794 if (gst_adapter_available (avi->adapter) >= 12) {
4795 GST_DEBUG ("Found LIST tag, skipping LIST header");
4796 gst_adapter_flush (avi->adapter, 12);
4800 } else if (tag == GST_RIFF_TAG_JUNK || tag == GST_RIFF_TAG_JUNQ) {
4801 /* rec list might contain JUNK chunks */
4802 GST_DEBUG ("Found JUNK tag");
4803 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4804 /* accept 0 size buffer here */
4805 avi->abort_buffering = FALSE;
4806 GST_DEBUG (" skipping %d bytes for now", size);
4807 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4811 GST_DEBUG ("No more stream chunks, send EOS");
4812 avi->have_eos = TRUE;
4813 return GST_FLOW_UNEXPECTED;
4816 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4817 /* supposedly one hopes to catch a nicer chunk later on ... */
4818 /* FIXME ?? give up here rather than possibly ending up going
4819 * through the whole file */
4820 if (avi->abort_buffering) {
4821 avi->abort_buffering = FALSE;
4822 gst_adapter_flush (avi->adapter, 8);
4826 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4827 GST_FOURCC_ARGS (tag), size);
4829 stream_nr = CHUNKID_TO_STREAMNR (tag);
4831 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4833 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4834 stream_nr, GST_FOURCC_ARGS (tag));
4835 avi->offset += 8 + GST_ROUND_UP_2 (size);
4836 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4838 GstAviStream *stream;
4839 GstClockTime next_ts = 0;
4840 GstBuffer *buf = NULL;
4842 gboolean saw_desired_kf = stream_nr != avi->main_stream
4843 || avi->offset >= avi->seek_kf_offset;
4845 if (stream_nr == avi->main_stream && avi->offset == avi->seek_kf_offset) {
4846 GST_DEBUG_OBJECT (avi, "Desired keyframe reached");
4847 avi->seek_kf_offset = 0;
4850 if (saw_desired_kf) {
4851 gst_adapter_flush (avi->adapter, 8);
4853 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
4854 /* patch the size */
4855 GST_BUFFER_SIZE (buf) = size;
4857 GST_DEBUG_OBJECT (avi,
4858 "Desired keyframe not yet reached, flushing chunk");
4859 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4862 offset = avi->offset;
4863 avi->offset += 8 + GST_ROUND_UP_2 (size);
4865 stream = &avi->stream[stream_nr];
4867 /* set delay (if any)
4868 if (stream->strh->init_frames == stream->current_frame &&
4870 stream->delay = next_ts;
4873 /* parsing of corresponding header may have failed */
4874 if (G_UNLIKELY (!stream->pad)) {
4875 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
4876 GST_FOURCC_ARGS (tag));
4878 gst_buffer_unref (buf);
4880 /* get time of this buffer */
4881 gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
4882 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4885 gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
4887 /* increment our positions */
4888 stream->current_entry++;
4889 stream->current_total += size;
4891 /* update current position in the segment */
4892 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
4894 if (saw_desired_kf && buf) {
4895 GstClockTime dur_ts = 0;
4897 /* invert the picture if needed */
4898 buf = gst_avi_demux_invert (stream, buf);
4900 gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
4901 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4904 GST_BUFFER_TIMESTAMP (buf) = next_ts;
4905 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
4906 if (stream->strh->type == GST_RIFF_FCC_vids) {
4907 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
4908 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
4910 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4911 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
4914 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4915 GST_DEBUG_OBJECT (avi,
4916 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
4917 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
4918 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
4919 GST_TIME_ARGS (GST_BUFFER_DURATION (buf)),
4920 GST_BUFFER_OFFSET (buf), size, GST_PAD_NAME (stream->pad));
4922 /* mark discont when pending */
4923 if (G_UNLIKELY (stream->discont)) {
4924 GST_DEBUG_OBJECT (avi, "Setting DISCONT");
4925 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4926 stream->discont = FALSE;
4928 res = gst_pad_push (stream->pad, buf);
4931 res = gst_avi_demux_combine_flows (avi, stream, res);
4932 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4933 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
4947 GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
4948 gst_format_get_name (format));
4949 res = GST_FLOW_ERROR;
4955 * Send pending tags.
4958 push_tag_lists (GstAviDemux * avi)
4966 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
4968 for (i = 0; i < avi->num_streams; i++) {
4969 GstAviStream *stream = &avi->stream[i];
4970 GstPad *pad = stream->pad;
4972 tags = stream->taglist;
4975 GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
4977 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (avi), pad, tags);
4978 stream->taglist = NULL;
4982 if (!(tags = avi->globaltags))
4983 tags = gst_tag_list_new ();
4985 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
4986 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
4988 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
4989 gst_element_found_tags (GST_ELEMENT_CAST (avi), tags);
4990 avi->globaltags = NULL;
4991 avi->got_tags = FALSE;
4995 gst_avi_demux_loop (GstPad * pad)
4998 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5000 switch (avi->state) {
5001 case GST_AVI_DEMUX_START:
5002 res = gst_avi_demux_stream_init_pull (avi);
5003 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5004 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5007 avi->state = GST_AVI_DEMUX_HEADER;
5009 case GST_AVI_DEMUX_HEADER:
5010 res = gst_avi_demux_stream_header_pull (avi);
5011 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5012 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5015 avi->state = GST_AVI_DEMUX_MOVI;
5017 case GST_AVI_DEMUX_MOVI:
5018 if (G_UNLIKELY (avi->seg_event)) {
5019 gst_avi_demux_push_event (avi, avi->seg_event);
5020 avi->seg_event = NULL;
5022 if (G_UNLIKELY (avi->got_tags)) {
5023 push_tag_lists (avi);
5025 /* process each index entry in turn */
5026 res = gst_avi_demux_loop_data (avi);
5028 /* pause when error */
5029 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5030 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
5035 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
5036 res = GST_FLOW_ERROR;
5044 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
5045 avi->segment_running = FALSE;
5046 gst_pad_pause_task (avi->sinkpad);
5048 if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
5049 gboolean push_eos = TRUE;
5051 if (res == GST_FLOW_UNEXPECTED) {
5052 /* handle end-of-stream/segment */
5053 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
5056 if ((stop = avi->segment.stop) == -1)
5057 stop = avi->segment.duration;
5059 GST_INFO_OBJECT (avi, "sending segment_done");
5061 gst_element_post_message
5062 (GST_ELEMENT_CAST (avi),
5063 gst_message_new_segment_done (GST_OBJECT_CAST (avi),
5064 GST_FORMAT_TIME, stop));
5068 /* for fatal errors we post an error message */
5069 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
5070 (_("Internal data stream error.")),
5071 ("streaming stopped, reason %s", gst_flow_get_name (res)));
5074 GST_INFO_OBJECT (avi, "sending eos");
5075 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
5076 (res == GST_FLOW_UNEXPECTED)) {
5077 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
5078 (NULL), ("got eos but no streams (yet)"));
5085 static GstFlowReturn
5086 gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
5089 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5092 if (GST_BUFFER_IS_DISCONT (buf)) {
5093 GST_DEBUG_OBJECT (avi, "got DISCONT");
5094 gst_adapter_clear (avi->adapter);
5095 /* mark all streams DISCONT */
5096 for (i = 0; i < avi->num_streams; i++)
5097 avi->stream[i].discont = TRUE;
5100 GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
5101 gst_adapter_push (avi->adapter, buf);
5103 switch (avi->state) {
5104 case GST_AVI_DEMUX_START:
5105 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
5106 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5110 case GST_AVI_DEMUX_HEADER:
5111 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
5112 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5116 case GST_AVI_DEMUX_MOVI:
5117 if (G_UNLIKELY (avi->seg_event)) {
5118 gst_avi_demux_push_event (avi, avi->seg_event);
5119 avi->seg_event = NULL;
5121 if (G_UNLIKELY (avi->got_tags)) {
5122 push_tag_lists (avi);
5124 res = gst_avi_demux_stream_data (avi);
5126 case GST_AVI_DEMUX_SEEK:
5132 /* obtain and parse indexes */
5133 if (avi->stream[0].indexes && !gst_avi_demux_read_subindexes_push (avi))
5134 /* seek in subindex read function failed */
5137 if (!avi->stream[0].indexes && !avi->have_index
5138 && avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
5139 gst_avi_demux_stream_index_push (avi);
5141 if (avi->have_index) {
5142 /* use the indexes now to construct nice durations */
5143 gst_avi_demux_calculate_durations_from_index (avi);
5145 /* still parsing indexes */
5149 GST_OBJECT_LOCK (avi);
5150 event = avi->seek_event;
5151 avi->seek_event = NULL;
5152 GST_OBJECT_UNLOCK (avi);
5154 /* calculate and perform seek */
5155 if (!avi_demux_handle_seek_push (avi, avi->sinkpad, event))
5158 gst_event_unref (event);
5159 avi->state = GST_AVI_DEMUX_MOVI;
5163 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
5164 ("Illegal internal state"));
5165 res = GST_FLOW_ERROR;
5169 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
5170 gst_flow_get_name (res));
5172 if (G_UNLIKELY (avi->abort_buffering))
5173 goto abort_buffering;
5180 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("failed to read indexes"));
5181 return GST_FLOW_ERROR;
5185 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("push mode seek failed"));
5186 return GST_FLOW_ERROR;
5190 avi->abort_buffering = FALSE;
5191 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
5192 return GST_FLOW_ERROR;
5197 gst_avi_demux_sink_activate (GstPad * sinkpad)
5199 if (gst_pad_check_pull_range (sinkpad)) {
5200 GST_DEBUG ("going to pull mode");
5201 return gst_pad_activate_pull (sinkpad, TRUE);
5203 GST_DEBUG ("going to push (streaming) mode");
5204 return gst_pad_activate_push (sinkpad, TRUE);
5209 gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
5211 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
5214 avi->segment_running = TRUE;
5215 avi->streaming = FALSE;
5216 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
5219 avi->segment_running = FALSE;
5220 return gst_pad_stop_task (sinkpad);
5225 gst_avi_demux_activate_push (GstPad * pad, gboolean active)
5227 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
5230 GST_DEBUG ("avi: activating push/chain function");
5231 avi->streaming = TRUE;
5233 /* create index for some push based seeking if not provided */
5234 GST_OBJECT_LOCK (avi);
5235 if (!avi->element_index) {
5236 GST_DEBUG_OBJECT (avi, "creating index");
5237 avi->element_index = gst_index_factory_make ("memindex");
5239 GST_OBJECT_UNLOCK (avi);
5240 /* object lock might be taken again */
5241 gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (avi),
5245 GST_DEBUG ("avi: deactivating push/chain function");
5252 gst_avi_demux_set_index (GstElement * element, GstIndex * index)
5254 GstAviDemux *avi = GST_AVI_DEMUX (element);
5256 GST_OBJECT_LOCK (avi);
5257 if (avi->element_index)
5258 gst_object_unref (avi->element_index);
5260 avi->element_index = gst_object_ref (index);
5262 avi->element_index = NULL;
5264 GST_OBJECT_UNLOCK (avi);
5265 /* object lock might be taken again */
5267 gst_index_get_writer_id (index, GST_OBJECT_CAST (element), &avi->index_id);
5268 GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
5272 gst_avi_demux_get_index (GstElement * element)
5274 GstIndex *result = NULL;
5275 GstAviDemux *avi = GST_AVI_DEMUX (element);
5277 GST_OBJECT_LOCK (avi);
5278 if (avi->element_index)
5279 result = gst_object_ref (avi->element_index);
5280 GST_OBJECT_UNLOCK (avi);
5282 GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
5287 static GstStateChangeReturn
5288 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
5290 GstStateChangeReturn ret;
5291 GstAviDemux *avi = GST_AVI_DEMUX (element);
5293 switch (transition) {
5294 case GST_STATE_CHANGE_READY_TO_PAUSED:
5295 avi->streaming = FALSE;
5296 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
5302 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
5303 if (ret == GST_STATE_CHANGE_FAILURE)
5306 switch (transition) {
5307 case GST_STATE_CHANGE_PAUSED_TO_READY:
5308 gst_avi_demux_reset (avi);