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 /* FIXME, this code assumes the main stream with keyframes is stream 0,
782 * which is mostly correct... */
783 GstAviStream *stream = &avi->stream[avi->main_stream];
785 /* find the index for start bytes offset, calculate the corresponding
786 * time and (reget?) start offset in bytes */
787 entry = gst_util_array_binary_search (stream->index,
788 stream->idx_n, sizeof (GstAviIndexEntry),
789 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
790 GST_SEARCH_MODE_BEFORE, &start, NULL);
795 index = entry - stream->index;
798 start = stream->index[index].offset;
799 gst_avi_demux_get_buffer_info (avi, stream, index,
800 (GstClockTime *) & time, NULL, NULL, NULL);
801 } else if (avi->element_index) {
802 GstIndexEntry *entry;
804 /* Let's check if we have an index entry for this position */
805 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
806 GST_INDEX_LOOKUP_AFTER, GST_ASSOCIATION_FLAG_NONE,
807 GST_FORMAT_BYTES, start);
809 /* we can not go where we have not yet been before ... */
811 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
815 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time);
816 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &start);
818 GST_WARNING_OBJECT (avi, "no index data, forcing EOS");
823 stop = GST_CLOCK_TIME_NONE;
825 /* set up segment and send downstream */
826 gst_segment_set_newsegment_full (&avi->segment, update, rate, arate,
827 GST_FORMAT_TIME, time, stop, time);
828 GST_DEBUG_OBJECT (avi, "Pushing newseg update %d, rate %g, "
829 "applied rate %g, format %d, start %" G_GINT64_FORMAT ", "
830 "stop %" G_GINT64_FORMAT, update, rate, arate, GST_FORMAT_TIME,
832 gst_avi_demux_push_event (avi,
833 gst_event_new_new_segment_full (update, rate, arate, GST_FORMAT_TIME,
836 GST_DEBUG_OBJECT (avi, "next chunk expected at %" G_GINT64_FORMAT, start);
838 /* adjust state for streaming thread accordingly */
839 avi->offset = offset;
841 gst_avi_demux_seek_streams_index (avi, offset, FALSE);
843 gst_avi_demux_seek_streams (avi, offset, FALSE);
845 /* set up streaming thread */
846 avi->offset = offset;
847 avi->todrop = start - offset;
850 gst_event_unref (event);
855 avi->have_eos = TRUE;
860 if (avi->state != GST_AVI_DEMUX_MOVI) {
861 gst_event_unref (event);
862 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
863 (NULL), ("got eos and didn't receive a complete header object"));
864 } else if (!gst_avi_demux_push_event (avi, event)) {
865 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
866 (NULL), ("got eos but no streams (yet)"));
870 case GST_EVENT_FLUSH_STOP:
874 gst_adapter_clear (avi->adapter);
875 avi->have_eos = FALSE;
876 for (i = 0; i < avi->num_streams; i++) {
877 avi->stream[i].last_flow = GST_FLOW_OK;
878 avi->stream[i].discont = TRUE;
880 /* fall through to default case so that the event gets passed downstream */
883 res = gst_pad_event_default (pad, event);
887 gst_object_unref (avi);
893 gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
896 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
898 GST_DEBUG_OBJECT (avi,
899 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
901 switch (GST_EVENT_TYPE (event)) {
903 if (!avi->streaming) {
904 res = gst_avi_demux_handle_seek (avi, pad, event);
906 res = gst_avi_demux_handle_seek_push (avi, pad, event);
908 gst_event_unref (event);
911 case GST_EVENT_NAVIGATION:
913 gst_event_unref (event);
916 res = gst_pad_event_default (pad, event);
920 gst_object_unref (avi);
925 /* streaming helper (push) */
928 * gst_avi_demux_peek_chunk_info:
930 * @tag: holder for tag
931 * @size: holder for tag size
933 * Peek next chunk info (tag and size)
935 * Returns: TRUE when one chunk info has been got
938 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
940 const guint8 *data = NULL;
942 if (gst_adapter_available (avi->adapter) < 8)
945 data = gst_adapter_peek (avi->adapter, 8);
946 *tag = GST_READ_UINT32_LE (data);
947 *size = GST_READ_UINT32_LE (data + 4);
953 * gst_avi_demux_peek_chunk:
955 * @tag: holder for tag
956 * @size: holder for tag size
958 * Peek enough data for one full chunk
960 * Returns: %TRUE when one chunk has been got
963 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
965 guint32 peek_size = 0;
968 if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
971 /* size 0 -> empty data buffer would surprise most callers,
972 * large size -> do not bother trying to squeeze that into adapter,
973 * so we throw poor man's exception, which can be caught if caller really
974 * wants to handle 0 size chunk */
975 if (!(*size) || (*size) >= (1 << 30))
978 peek_size = (*size + 1) & ~1;
979 available = gst_adapter_available (avi->adapter);
981 GST_DEBUG_OBJECT (avi,
982 "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
983 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
985 if (available < (8 + peek_size))
993 GST_INFO_OBJECT (avi, "Failed to peek");
998 GST_INFO_OBJECT (avi,
999 "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
1000 GST_FOURCC_ARGS (*tag));
1001 /* chain should give up */
1002 avi->abort_buffering = TRUE;
1007 GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
1008 available, 8 + peek_size);
1016 * gst_avi_demux_parse_file_header:
1017 * @element: caller element (used for errors/debug).
1018 * @buf: input data to be used for parsing.
1020 * "Open" a RIFF/AVI file. The buffer should be at least 12
1021 * bytes long. Takes ownership of @buf.
1023 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
1024 * Throws an error, caller should error out (fatal).
1027 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
1032 stamp = gst_util_get_timestamp ();
1034 /* riff_parse posts an error */
1035 if (!gst_riff_parse_file_header (element, buf, &doctype))
1038 if (doctype != GST_RIFF_RIFF_AVI)
1041 stamp = gst_util_get_timestamp () - stamp;
1042 GST_DEBUG_OBJECT (element, "header parsing took %" GST_TIME_FORMAT,
1043 GST_TIME_ARGS (stamp));
1050 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
1051 ("File is not an AVI file: %" GST_FOURCC_FORMAT,
1052 GST_FOURCC_ARGS (doctype)));
1058 * Read AVI file tag when streaming
1060 static GstFlowReturn
1061 gst_avi_demux_stream_init_push (GstAviDemux * avi)
1063 if (gst_adapter_available (avi->adapter) >= 12) {
1066 tmp = gst_adapter_take_buffer (avi->adapter, 12);
1068 GST_DEBUG ("Parsing avi header");
1069 if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), tmp)) {
1070 return GST_FLOW_ERROR;
1072 GST_DEBUG ("header ok");
1075 avi->state = GST_AVI_DEMUX_HEADER;
1083 static GstFlowReturn
1084 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
1087 GstBuffer *buf = NULL;
1089 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
1090 if (res != GST_FLOW_OK)
1092 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
1102 GST_DEBUG_OBJECT (avi, "error parsing file header");
1103 return GST_FLOW_ERROR;
1107 /* AVI header handling */
1109 * gst_avi_demux_parse_avih:
1110 * @avi: caller element (used for errors/debug).
1111 * @buf: input data to be used for parsing.
1112 * @avih: pointer to structure (filled in by function) containing
1113 * stream information (such as flags, number of streams, etc.).
1115 * Read 'avih' header. Discards buffer after use.
1117 * Returns: TRUE on success, FALSE otherwise. Throws an error if
1118 * the header is invalid. The caller should error out
1122 gst_avi_demux_parse_avih (GstAviDemux * avi,
1123 GstBuffer * buf, gst_riff_avih ** _avih)
1125 gst_riff_avih *avih;
1130 if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
1131 goto avih_too_small;
1133 avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1135 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1136 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
1137 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
1138 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
1139 avih->flags = GUINT32_FROM_LE (avih->flags);
1140 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
1141 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
1142 avih->streams = GUINT32_FROM_LE (avih->streams);
1143 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
1144 avih->width = GUINT32_FROM_LE (avih->width);
1145 avih->height = GUINT32_FROM_LE (avih->height);
1146 avih->scale = GUINT32_FROM_LE (avih->scale);
1147 avih->rate = GUINT32_FROM_LE (avih->rate);
1148 avih->start = GUINT32_FROM_LE (avih->start);
1149 avih->length = GUINT32_FROM_LE (avih->length);
1153 GST_INFO_OBJECT (avi, "avih tag found:");
1154 GST_INFO_OBJECT (avi, " us_frame %u", avih->us_frame);
1155 GST_INFO_OBJECT (avi, " max_bps %u", avih->max_bps);
1156 GST_INFO_OBJECT (avi, " pad_gran %u", avih->pad_gran);
1157 GST_INFO_OBJECT (avi, " flags 0x%08x", avih->flags);
1158 GST_INFO_OBJECT (avi, " tot_frames %u", avih->tot_frames);
1159 GST_INFO_OBJECT (avi, " init_frames %u", avih->init_frames);
1160 GST_INFO_OBJECT (avi, " streams %u", avih->streams);
1161 GST_INFO_OBJECT (avi, " bufsize %u", avih->bufsize);
1162 GST_INFO_OBJECT (avi, " width %u", avih->width);
1163 GST_INFO_OBJECT (avi, " height %u", avih->height);
1164 GST_INFO_OBJECT (avi, " scale %u", avih->scale);
1165 GST_INFO_OBJECT (avi, " rate %u", avih->rate);
1166 GST_INFO_OBJECT (avi, " start %u", avih->start);
1167 GST_INFO_OBJECT (avi, " length %u", avih->length);
1170 gst_buffer_unref (buf);
1172 if (avih->us_frame != 0 && avih->tot_frames != 0)
1174 (guint64) avih->us_frame * (guint64) avih->tot_frames * 1000;
1176 avi->duration = GST_CLOCK_TIME_NONE;
1178 GST_INFO_OBJECT (avi, " header duration %" GST_TIME_FORMAT,
1179 GST_TIME_ARGS (avi->duration));
1186 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No buffer"));
1191 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
1192 ("Too small avih (%d available, %d needed)",
1193 GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
1194 gst_buffer_unref (buf);
1200 * gst_avi_demux_parse_superindex:
1201 * @avi: caller element (used for debugging/errors).
1202 * @buf: input data to use for parsing.
1203 * @locations: locations in the file (byte-offsets) that contain
1204 * the actual indexes (see get_avi_demux_parse_subindex()).
1205 * The array ends with GST_BUFFER_OFFSET_NONE.
1207 * Reads superindex (openDML-2 spec stuff) from the provided data.
1209 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
1210 * on error, but they are not fatal.
1213 gst_avi_demux_parse_superindex (GstAviDemux * avi,
1214 GstBuffer * buf, guint64 ** _indexes)
1224 size = buf ? GST_BUFFER_SIZE (buf) : 0;
1228 data = GST_BUFFER_DATA (buf);
1230 /* check type of index. The opendml2 specs state that
1231 * there should be 4 dwords per array entry. Type can be
1232 * either frame or field (and we don't care). */
1233 if (GST_READ_UINT16_LE (data) != 4 ||
1234 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
1235 GST_WARNING_OBJECT (avi,
1236 "Superindex for stream has unexpected "
1237 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1238 GST_READ_UINT16_LE (data), data[2], data[3]);
1239 bpe = GST_READ_UINT16_LE (data) * 4;
1241 num = GST_READ_UINT32_LE (&data[4]);
1243 GST_DEBUG_OBJECT (avi, "got %d indexes", num);
1245 indexes = g_new (guint64, num + 1);
1246 for (i = 0; i < num; i++) {
1247 if (size < 24 + bpe * (i + 1))
1249 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1250 GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
1252 indexes[i] = GST_BUFFER_OFFSET_NONE;
1253 *_indexes = indexes;
1255 gst_buffer_unref (buf);
1262 GST_ERROR_OBJECT (avi,
1263 "Not enough data to parse superindex (%d available, 24 needed)", size);
1265 gst_buffer_unref (buf);
1270 /* add an entry to the index of a stream. @num should be an estimate of the
1271 * total amount of index entries for all streams and is used to dynamically
1272 * allocate memory for the index entries. */
1273 static inline gboolean
1274 gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
1275 guint num, GstAviIndexEntry * entry)
1277 /* ensure index memory */
1278 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
1279 guint idx_max = stream->idx_max;
1280 GstAviIndexEntry *new_idx;
1282 /* we need to make some more room */
1284 /* initial size guess, assume each stream has an equal amount of entries,
1285 * overshoot with at least 8K */
1286 idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
1288 idx_max += 8192 / sizeof (GstAviIndexEntry);
1289 GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
1290 stream->idx_max, idx_max);
1292 new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
1293 /* out of memory, if this fails stream->index is untouched. */
1294 if (G_UNLIKELY (!new_idx))
1297 stream->index = new_idx;
1298 stream->idx_max = idx_max;
1301 /* update entry total and stream stats. The entry total can be converted to
1302 * the timestamp of the entry easily. */
1303 if (stream->strh->type == GST_RIFF_FCC_auds) {
1306 if (stream->is_vbr) {
1307 entry->total = stream->total_blocks;
1309 entry->total = stream->total_bytes;
1311 blockalign = stream->strf.auds->blockalign;
1313 stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
1315 stream->total_blocks++;
1317 if (stream->is_vbr) {
1318 entry->total = stream->idx_n;
1320 entry->total = stream->total_bytes;
1323 stream->total_bytes += entry->size;
1324 if (ENTRY_IS_KEYFRAME (entry))
1325 stream->n_keyframes++;
1328 GST_LOG_OBJECT (avi,
1329 "Adding stream %u, index entry %d, kf %d, size %u "
1330 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
1331 stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
1333 stream->index[stream->idx_n++] = *entry;
1338 /* given @entry_n in @stream, calculate info such as timestamps and
1339 * offsets for the entry. */
1341 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1342 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1343 guint64 * offset, guint64 * offset_end)
1345 GstAviIndexEntry *entry;
1347 entry = &stream->index[entry_n];
1349 if (stream->is_vbr) {
1350 /* VBR stream next timestamp */
1351 if (stream->strh->type == GST_RIFF_FCC_auds) {
1354 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
1356 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1361 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
1363 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1366 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
1367 /* constant rate stream */
1370 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
1372 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
1373 entry->total + entry->size);
1375 if (stream->strh->type == GST_RIFF_FCC_vids) {
1376 /* video offsets are the frame number */
1380 *offset_end = entry_n + 1;
1382 /* no offsets for audio */
1390 /* collect and debug stats about the indexes for all streams.
1391 * This method is also responsible for filling in the stream duration
1392 * as measured by the amount of index entries.
1394 * Returns TRUE if the index is not empty, else FALSE */
1396 gst_avi_demux_do_index_stats (GstAviDemux * avi)
1398 guint total_idx = 0;
1400 #ifndef GST_DISABLE_GST_DEBUG
1401 guint total_max = 0;
1404 /* get stream stats now */
1405 for (i = 0; i < avi->num_streams; i++) {
1406 GstAviStream *stream;
1408 if (G_UNLIKELY (!(stream = &avi->stream[i])))
1410 if (G_UNLIKELY (!stream->strh))
1412 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
1415 /* we interested in the end_ts of the last entry, which is the total
1416 * duration of this stream */
1417 gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
1418 NULL, &stream->idx_duration, NULL, NULL);
1420 total_idx += stream->idx_n;
1421 #ifndef GST_DISABLE_GST_DEBUG
1422 total_max += stream->idx_max;
1424 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
1425 "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
1426 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
1427 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
1428 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
1429 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
1431 total_idx *= sizeof (GstAviIndexEntry);
1432 #ifndef GST_DISABLE_GST_DEBUG
1433 total_max *= sizeof (GstAviIndexEntry);
1435 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
1436 total_max, total_idx, total_max - total_idx);
1438 if (total_idx == 0) {
1439 GST_WARNING_OBJECT (avi, "Index is empty !");
1446 * gst_avi_demux_parse_subindex:
1448 * @buf: input data to use for parsing.
1449 * @stream: stream context.
1450 * @entries_list: a list (returned by the function) containing all the
1451 * indexes parsed in this specific subindex. The first
1452 * entry is also a pointer to allocated memory that needs
1453 * to be free´ed. May be NULL if no supported indexes were
1456 * Reads superindex (openDML-2 spec stuff) from the provided data.
1457 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1459 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1460 * throw an error, caller should bail out asap.
1463 gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
1475 size = GST_BUFFER_SIZE (buf);
1481 data = GST_BUFFER_DATA (buf);
1483 /* We don't support index-data yet */
1485 goto not_implemented;
1487 /* check type of index. The opendml2 specs state that
1488 * there should be 4 dwords per array entry. Type can be
1489 * either frame or field (and we don't care). */
1490 bpe = (data[2] & 0x01) ? 12 : 8;
1491 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1492 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1493 GST_WARNING_OBJECT (avi,
1494 "Superindex for stream %d has unexpected "
1495 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1496 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1497 bpe = GST_READ_UINT16_LE (data) * 4;
1499 num = GST_READ_UINT32_LE (&data[4]);
1500 baseoff = GST_READ_UINT64_LE (&data[12]);
1502 /* If there's nothing, just return ! */
1506 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1508 for (i = 0; i < num; i++) {
1509 GstAviIndexEntry entry;
1511 if (size < 24 + bpe * (i + 1))
1514 /* fill in offset and size. offset contains the keyframe flag in the
1516 entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1517 entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1519 if (stream->strh->type == GST_RIFF_FCC_auds) {
1520 /* all audio frames are keyframes */
1521 ENTRY_SET_KEYFRAME (&entry);
1523 /* else read flags */
1524 entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
1526 entry.size &= ~0x80000000;
1529 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
1532 gst_buffer_unref (buf);
1539 GST_ERROR_OBJECT (avi,
1540 "Not enough data to parse subindex (%d available, 24 needed)", size);
1541 gst_buffer_unref (buf);
1542 return TRUE; /* continue */
1546 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1547 ("Subindex-is-data is not implemented"));
1548 gst_buffer_unref (buf);
1553 GST_DEBUG_OBJECT (avi, "the index is empty");
1554 gst_buffer_unref (buf);
1559 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1560 ("Cannot allocate memory for %u*%u=%u bytes",
1561 (guint) sizeof (GstAviIndexEntry), num,
1562 (guint) sizeof (GstAviIndexEntry) * num));
1563 gst_buffer_unref (buf);
1569 * Create and push a flushing seek event upstream
1572 perform_seek_to_offset (GstAviDemux * demux, guint64 offset)
1577 GST_DEBUG_OBJECT (demux, "Seeking to %" G_GUINT64_FORMAT, offset);
1580 gst_event_new_seek (1.0, GST_FORMAT_BYTES,
1581 GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
1582 GST_SEEK_TYPE_NONE, -1);
1584 res = gst_pad_push_event (demux->sinkpad, event);
1587 demux->offset = offset;
1592 * Read AVI index when streaming
1595 gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
1597 guint32 tag = 0, size;
1598 GstBuffer *buf = NULL;
1601 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1603 if (avi->odml_subidxs[avi->odml_subidx] != avi->offset)
1606 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1609 /* this is the ODML chunk we expect */
1610 odml_stream = avi->odml_stream;
1612 if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + odml_stream / 10,
1613 '0' + odml_stream % 10)) &&
1614 (tag != GST_MAKE_FOURCC ('0' + odml_stream / 10,
1615 '0' + odml_stream % 10, 'i', 'x'))) {
1616 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1617 GST_FOURCC_ARGS (tag));
1621 avi->offset += 8 + GST_ROUND_UP_2 (size);
1622 /* flush chunk header so we get just the 'size' payload data */
1623 gst_adapter_flush (avi->adapter, 8);
1624 buf = gst_adapter_take_buffer (avi->adapter, size);
1626 if (!gst_avi_demux_parse_subindex (avi, &avi->stream[odml_stream], buf))
1629 /* we parsed the index, go to next subindex */
1632 if (avi->odml_subidxs[avi->odml_subidx] == GST_BUFFER_OFFSET_NONE) {
1633 /* we reached the end of the indexes for this stream, move to the next
1634 * stream to handle the first index */
1636 avi->odml_subidx = 0;
1638 if (avi->odml_stream < avi->num_streams) {
1639 /* there are more indexes */
1640 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
1642 /* we're done, get stream stats now */
1643 avi->have_index = gst_avi_demux_do_index_stats (avi);
1649 /* seek to next index */
1650 return perform_seek_to_offset (avi, avi->odml_subidxs[avi->odml_subidx]);
1657 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
1663 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1665 for (n = 0; n < avi->num_streams; n++) {
1666 GstAviStream *stream = &avi->stream[n];
1668 if (stream->indexes == NULL)
1671 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1672 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
1673 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1675 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1676 '0' + stream->num % 10)) &&
1677 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1678 '0' + stream->num % 10, 'i', 'x'))) {
1679 /* Some ODML files (created by god knows what muxer) have a ##ix format
1680 * instead of the 'official' ix##. They are still valid though. */
1681 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1682 GST_FOURCC_ARGS (tag));
1683 gst_buffer_unref (buf);
1687 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1691 g_free (stream->indexes);
1692 stream->indexes = NULL;
1694 /* get stream stats now */
1695 avi->have_index = gst_avi_demux_do_index_stats (avi);
1699 * gst_avi_demux_riff_parse_vprp:
1700 * @element: caller element (used for debugging/error).
1701 * @buf: input data to be used for parsing, stripped from header.
1702 * @vprp: a pointer (returned by this function) to a filled-in vprp
1703 * structure. Caller should free it.
1705 * Parses a video stream´s vprp. This function takes ownership of @buf.
1707 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1708 * should be skipped on error, but it is not fatal.
1711 gst_avi_demux_riff_parse_vprp (GstElement * element,
1712 GstBuffer * buf, gst_riff_vprp ** _vprp)
1714 gst_riff_vprp *vprp;
1717 g_return_val_if_fail (buf != NULL, FALSE);
1718 g_return_val_if_fail (_vprp != NULL, FALSE);
1720 if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1723 vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1725 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1726 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1727 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1728 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1729 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1730 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1731 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1732 vprp->width = GUINT32_FROM_LE (vprp->width);
1733 vprp->height = GUINT32_FROM_LE (vprp->height);
1734 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1738 /* calculate fields based on size */
1739 k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
1741 if (vprp->fields > k) {
1742 GST_WARNING_OBJECT (element,
1743 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1746 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1747 GST_WARNING_OBJECT (element,
1748 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1749 GST_RIFF_VPRP_VIDEO_FIELDS);
1750 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1752 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1753 for (k = 0; k < vprp->fields; k++) {
1754 gst_riff_vprp_video_field_desc *fd;
1756 fd = &vprp->field_info[k];
1757 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1758 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1759 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1760 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1761 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1762 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1763 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1764 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1769 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1770 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1771 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1772 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1773 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1774 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1775 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1776 vprp->aspect & 0xffff);
1777 GST_INFO_OBJECT (element, " width %d", vprp->width);
1778 GST_INFO_OBJECT (element, " height %d", vprp->height);
1779 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1780 for (k = 0; k < vprp->fields; k++) {
1781 gst_riff_vprp_video_field_desc *fd;
1783 fd = &(vprp->field_info[k]);
1784 GST_INFO_OBJECT (element, " field %u description:", k);
1785 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1786 fd->compressed_bm_height);
1787 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1788 fd->compressed_bm_width);
1789 GST_INFO_OBJECT (element, " valid_bm_height %d",
1790 fd->valid_bm_height);
1791 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1792 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1793 fd->valid_bm_x_offset);
1794 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1795 fd->valid_bm_y_offset);
1796 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1797 fd->video_x_t_offset);
1798 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1801 gst_buffer_unref (buf);
1810 GST_ERROR_OBJECT (element,
1811 "Too small vprp (%d available, at least %d needed)",
1812 GST_BUFFER_SIZE (buf),
1813 (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1814 gst_buffer_unref (buf);
1820 gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
1824 GST_DEBUG_OBJECT (avi, "force : %d", force);
1826 for (i = 0; i < avi->num_streams; i++) {
1827 GstAviStream *stream = &avi->stream[i];
1829 if (force || stream->idx_n != 0) {
1830 GST_LOG_OBJECT (avi, "Added pad %s with caps %" GST_PTR_FORMAT,
1831 GST_PAD_NAME (stream->pad), GST_PAD_CAPS (stream->pad));
1832 gst_element_add_pad ((GstElement *) avi, stream->pad);
1833 stream->exposed = TRUE;
1834 if (avi->main_stream == -1)
1835 avi->main_stream = i;
1837 GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
1839 gst_avi_demux_reset_stream (avi, stream);
1845 * gst_avi_demux_parse_stream:
1846 * @avi: calling element (used for debugging/errors).
1847 * @buf: input buffer used to parse the stream.
1849 * Parses all subchunks in a strl chunk (which defines a single
1850 * stream). Discards the buffer after use. This function will
1851 * increment the stream counter internally.
1853 * Returns: whether the stream was identified successfully.
1854 * Errors are not fatal. It does indicate the stream
1858 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1860 GstAviStream *stream;
1861 GstElementClass *klass;
1862 GstPadTemplate *templ;
1863 GstBuffer *sub = NULL;
1866 gchar *codec_name = NULL, *padname = NULL;
1867 const gchar *tag_name;
1868 GstCaps *caps = NULL;
1870 GstElement *element;
1871 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1872 gst_riff_vprp *vprp = NULL;
1874 element = GST_ELEMENT_CAST (avi);
1876 GST_DEBUG_OBJECT (avi, "Parsing stream");
1878 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1879 GST_WARNING_OBJECT (avi,
1880 "maximum no of streams (%d) exceeded, ignoring stream",
1881 GST_AVI_DEMUX_MAX_STREAMS);
1882 gst_buffer_unref (buf);
1883 /* not a fatal error, let's say */
1887 stream = &avi->stream[avi->num_streams];
1889 /* initial settings */
1890 stream->idx_duration = GST_CLOCK_TIME_NONE;
1891 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1892 stream->duration = GST_CLOCK_TIME_NONE;
1894 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1895 /* sub can be NULL if the chunk is empty */
1897 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1898 GST_FOURCC_ARGS (tag));
1902 case GST_RIFF_TAG_strh:
1904 gst_riff_strh *strh;
1907 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1910 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1911 /* ownership given away */
1913 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1917 strh = stream->strh;
1918 /* sanity check; stream header frame rate matches global header
1920 if (stream->strh->type == GST_RIFF_FCC_vids) {
1922 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1924 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1925 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1926 "frame duration = %d ms", strh->rate, strh->scale,
1927 (gint) (s_dur / GST_MSECOND));
1928 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1929 strh->rate = GST_SECOND / GST_USECOND;
1930 strh->scale = h_dur / GST_USECOND;
1931 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1932 strh->rate, strh->scale);
1935 /* determine duration as indicated by header */
1936 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1937 strh->scale, GST_SECOND, (guint64) strh->rate);
1938 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1939 GST_TIME_ARGS (stream->hdr_duration));
1940 if (stream->hdr_duration == 0)
1941 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1946 case GST_RIFF_TAG_strf:
1948 gboolean res = FALSE;
1951 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
1955 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
1958 switch (stream->strh->type) {
1959 case GST_RIFF_FCC_vids:
1960 stream->is_vbr = TRUE;
1961 res = gst_riff_parse_strf_vids (element, sub,
1962 &stream->strf.vids, &stream->extradata);
1964 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
1966 case GST_RIFF_FCC_auds:
1967 stream->is_vbr = (stream->strh->samplesize == 0)
1968 && stream->strh->scale > 1;
1970 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
1971 &stream->extradata);
1973 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
1974 stream->is_vbr, res);
1976 case GST_RIFF_FCC_iavs:
1977 stream->is_vbr = TRUE;
1978 res = gst_riff_parse_strf_iavs (element, sub,
1979 &stream->strf.iavs, &stream->extradata);
1981 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
1983 case GST_RIFF_FCC_txts:
1984 /* nothing to parse here */
1985 stream->is_vbr = (stream->strh->samplesize == 0)
1986 && (stream->strh->scale > 1);
1990 GST_ERROR_OBJECT (avi,
1991 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
1992 GST_FOURCC_ARGS (stream->strh->type));
1996 gst_buffer_unref (sub);
2004 case GST_RIFF_TAG_vprp:
2007 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
2011 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
2015 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
2019 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
2020 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
2021 /* not considered fatal */
2029 case GST_RIFF_TAG_strd:
2030 if (stream->initdata)
2031 gst_buffer_unref (stream->initdata);
2032 stream->initdata = sub;
2035 case GST_RIFF_TAG_strn:
2036 g_free (stream->name);
2039 g_strndup ((gchar *) GST_BUFFER_DATA (sub),
2040 (gsize) GST_BUFFER_SIZE (sub));
2041 gst_buffer_unref (sub);
2044 stream->name = g_strdup ("");
2046 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
2049 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
2050 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
2051 '0' + avi->num_streams % 10)) {
2052 g_free (stream->indexes);
2053 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
2054 stream->superindex = TRUE;
2058 GST_WARNING_OBJECT (avi,
2059 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
2060 GST_FOURCC_ARGS (tag));
2062 case GST_RIFF_TAG_JUNQ:
2063 case GST_RIFF_TAG_JUNK:
2067 gst_buffer_unref (sub);
2073 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
2078 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
2082 /* get class to figure out the template */
2083 klass = GST_ELEMENT_GET_CLASS (avi);
2085 /* we now have all info, let´s set up a pad and a caps and be done */
2086 /* create stream name + pad */
2087 switch (stream->strh->type) {
2088 case GST_RIFF_FCC_vids:{
2091 fourcc = (stream->strf.vids->compression) ?
2092 stream->strf.vids->compression : stream->strh->fcc_handler;
2093 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
2094 templ = gst_element_class_get_pad_template (klass, "video_%02d");
2095 caps = gst_riff_create_video_caps (fourcc, stream->strh,
2096 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
2098 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2099 GST_TYPE_FOURCC, fourcc, NULL);
2100 } else if (got_vprp && vprp) {
2101 guint32 aspect_n, aspect_d;
2104 aspect_n = vprp->aspect >> 16;
2105 aspect_d = vprp->aspect & 0xffff;
2106 /* calculate the pixel aspect ratio using w/h and aspect ratio */
2107 n = aspect_n * stream->strf.vids->height;
2108 d = aspect_d * stream->strf.vids->width;
2110 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
2112 /* very local, not needed elsewhere */
2116 tag_name = GST_TAG_VIDEO_CODEC;
2117 avi->num_v_streams++;
2120 case GST_RIFF_FCC_auds:{
2121 padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
2122 templ = gst_element_class_get_pad_template (klass, "audio_%02d");
2123 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
2124 stream->strh, stream->strf.auds, stream->extradata,
2125 stream->initdata, &codec_name);
2127 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
2128 G_TYPE_INT, stream->strf.auds->format, NULL);
2130 tag_name = GST_TAG_AUDIO_CODEC;
2131 avi->num_a_streams++;
2134 case GST_RIFF_FCC_iavs:{
2135 guint32 fourcc = stream->strh->fcc_handler;
2137 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
2138 templ = gst_element_class_get_pad_template (klass, "video_%02d");
2139 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
2140 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
2142 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2143 GST_TYPE_FOURCC, fourcc, NULL);
2145 tag_name = GST_TAG_VIDEO_CODEC;
2146 avi->num_v_streams++;
2149 case GST_RIFF_FCC_txts:{
2150 padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
2151 templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
2152 caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
2154 avi->num_t_streams++;
2158 g_assert_not_reached ();
2161 /* no caps means no stream */
2163 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
2167 GST_DEBUG_OBJECT (element, "codec-name=%s",
2168 (codec_name ? codec_name : "NULL"));
2169 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
2171 /* set proper settings and add it */
2173 gst_object_unref (stream->pad);
2174 pad = stream->pad = gst_pad_new_from_template (templ, padname);
2177 gst_pad_use_fixed_caps (pad);
2179 gst_pad_set_formats_function (pad,
2180 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
2181 gst_pad_set_event_mask_function (pad,
2182 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
2184 gst_pad_set_event_function (pad,
2185 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
2186 gst_pad_set_query_type_function (pad,
2187 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
2188 gst_pad_set_query_function (pad,
2189 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
2191 gst_pad_set_convert_function (pad,
2192 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
2195 if (avi->element_index)
2196 gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (stream->pad),
2199 stream->num = avi->num_streams;
2201 stream->start_entry = 0;
2202 stream->step_entry = 0;
2203 stream->stop_entry = 0;
2205 stream->current_entry = -1;
2206 stream->current_total = 0;
2208 stream->last_flow = GST_FLOW_OK;
2209 stream->discont = TRUE;
2211 stream->total_bytes = 0;
2212 stream->total_blocks = 0;
2213 stream->n_keyframes = 0;
2216 stream->idx_max = 0;
2218 gst_pad_set_element_private (pad, stream);
2221 gst_pad_set_caps (pad, caps);
2222 gst_pad_set_active (pad, TRUE);
2223 gst_caps_unref (caps);
2227 if (!stream->taglist)
2228 stream->taglist = gst_tag_list_new ();
2230 avi->got_tags = TRUE;
2232 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
2234 g_free (codec_name);
2237 gst_buffer_unref (buf);
2244 /* unref any mem that may be in use */
2246 gst_buffer_unref (buf);
2248 gst_buffer_unref (sub);
2250 g_free (codec_name);
2251 gst_avi_demux_reset_stream (avi, stream);
2258 * gst_avi_demux_parse_odml:
2259 * @avi: calling element (used for debug/error).
2260 * @buf: input buffer to be used for parsing.
2262 * Read an openDML-2.0 extension header. Fills in the frame number
2263 * in the avi demuxer object when reading succeeds.
2266 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
2270 GstBuffer *sub = NULL;
2272 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2275 case GST_RIFF_TAG_dmlh:{
2276 gst_riff_dmlh dmlh, *_dmlh;
2279 /* sub == NULL is possible and means an empty buffer */
2280 size = sub ? GST_BUFFER_SIZE (sub) : 0;
2283 if (size < sizeof (gst_riff_dmlh)) {
2284 GST_ERROR_OBJECT (avi,
2285 "DMLH entry is too small (%d bytes, %d needed)",
2286 size, (int) sizeof (gst_riff_dmlh));
2289 _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
2290 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
2292 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
2295 avi->avih->tot_frames = dmlh.totalframes;
2300 GST_WARNING_OBJECT (avi,
2301 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
2302 GST_FOURCC_ARGS (tag));
2304 case GST_RIFF_TAG_JUNQ:
2305 case GST_RIFF_TAG_JUNK:
2307 /* skip and move to next chunk */
2309 gst_buffer_unref (sub);
2316 gst_buffer_unref (buf);
2321 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
2323 return stream->idx_n - 1;
2326 /* find a previous entry in the index with the given flags */
2328 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
2329 guint last, gboolean keyframe)
2331 GstAviIndexEntry *entry;
2334 for (i = last; i > 0; i--) {
2335 entry = &stream->index[i - 1];
2336 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2344 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
2345 guint last, gboolean keyframe)
2347 GstAviIndexEntry *entry;
2350 for (i = last + 1; i < stream->idx_n; i++) {
2351 entry = &stream->index[i];
2352 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2356 return stream->idx_n - 1;
2360 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
2362 if (entry->total < *total)
2364 else if (entry->total > *total)
2370 * gst_avi_demux_index_for_time:
2372 * @stream: the stream
2373 * @time: a time position
2375 * Finds the index entry which time is less or equal than the requested time.
2376 * Try to avoid binary search when we can convert the time to an index
2377 * position directly (for example for video frames with a fixed duration).
2379 * Returns: the found position in the index.
2382 gst_avi_demux_index_for_time (GstAviDemux * avi,
2383 GstAviStream * stream, guint64 time)
2388 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
2390 /* easy (and common) cases */
2391 if (time == 0 || stream->idx_n == 0)
2393 if (time >= stream->idx_duration)
2394 return stream->idx_n - 1;
2396 /* figure out where we need to go. For that we convert the time to an
2397 * index entry or we convert it to a total and then do a binary search. */
2398 if (stream->is_vbr) {
2399 /* VBR stream next timestamp */
2400 if (stream->strh->type == GST_RIFF_FCC_auds) {
2401 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
2403 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
2406 /* constant rate stream */
2407 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
2411 GstAviIndexEntry *entry;
2413 /* no index, find index with binary search on total */
2414 GST_LOG_OBJECT (avi, "binary search for entry with total %"
2415 G_GUINT64_FORMAT, total);
2417 entry = gst_util_array_binary_search (stream->index,
2418 stream->idx_n, sizeof (GstAviIndexEntry),
2419 (GCompareDataFunc) gst_avi_demux_index_entry_search,
2420 GST_SEARCH_MODE_BEFORE, &total, NULL);
2422 if (entry == NULL) {
2423 GST_LOG_OBJECT (avi, "not found, assume index 0");
2426 index = entry - stream->index;
2427 GST_LOG_OBJECT (avi, "found at %u", index);
2430 GST_LOG_OBJECT (avi, "converted time to index %u", index);
2436 static inline GstAviStream *
2437 gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
2440 GstAviStream *stream;
2442 /* get the stream for this entry */
2443 stream_nr = CHUNKID_TO_STREAMNR (id);
2444 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2445 GST_WARNING_OBJECT (avi, "invalid stream nr %d", stream_nr);
2448 stream = &avi->stream[stream_nr];
2449 if (G_UNLIKELY (!stream->strh)) {
2450 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2457 * gst_avi_demux_parse_index:
2458 * @avi: calling element (used for debugging/errors).
2459 * @buf: buffer containing the full index.
2461 * Read index entries from the provided buffer.
2462 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2465 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2471 gst_riff_index_entry *index;
2473 GstAviStream *stream;
2474 GstAviIndexEntry entry;
2480 data = GST_BUFFER_DATA (buf);
2481 size = GST_BUFFER_SIZE (buf);
2483 stamp = gst_util_get_timestamp ();
2485 /* see how many items in the index */
2486 num = size / sizeof (gst_riff_index_entry);
2490 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2492 index = (gst_riff_index_entry *) data;
2493 pos_before = avi->offset;
2495 /* figure out if the index is 0 based or relative to the MOVI start */
2496 entry.offset = GST_READ_UINT32_LE (&index[0].offset);
2497 if (entry.offset < avi->offset) {
2498 avi->index_offset = avi->offset + 8;
2499 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2501 avi->index_offset = 0;
2502 GST_DEBUG ("index is 0 based");
2505 for (i = 0, n = 0; i < num; i++) {
2506 id = GST_READ_UINT32_LE (&index[i].id);
2507 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2509 /* some sanity checks */
2510 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2511 (entry.offset == 0 && n > 0)))
2514 /* get the stream for this entry */
2515 stream = gst_avi_demux_stream_for_id (avi, id);
2516 if (G_UNLIKELY (!stream))
2519 /* handle offset and size */
2520 entry.offset += avi->index_offset + 8;
2521 entry.size = GST_READ_UINT32_LE (&index[i].size);
2524 if (stream->strh->type == GST_RIFF_FCC_auds) {
2525 /* all audio frames are keyframes */
2526 ENTRY_SET_KEYFRAME (&entry);
2529 /* else read flags */
2530 flags = GST_READ_UINT32_LE (&index[i].flags);
2531 if (flags & GST_RIFF_IF_KEYFRAME) {
2532 ENTRY_SET_KEYFRAME (&entry);
2534 ENTRY_UNSET_KEYFRAME (&entry);
2539 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2544 gst_buffer_unref (buf);
2546 /* get stream stats now */
2547 avi->have_index = gst_avi_demux_do_index_stats (avi);
2549 stamp = gst_util_get_timestamp () - stamp;
2550 GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT,
2551 GST_TIME_ARGS (stamp));
2558 GST_DEBUG_OBJECT (avi, "empty index");
2559 gst_buffer_unref (buf);
2564 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2565 ("Cannot allocate memory for %u*%u=%u bytes",
2566 (guint) sizeof (GstAviIndexEntry), num,
2567 (guint) sizeof (GstAviIndexEntry) * num));
2568 gst_buffer_unref (buf);
2574 * gst_avi_demux_stream_index:
2575 * @avi: avi demuxer object.
2577 * Seeks to index and reads it.
2580 gst_avi_demux_stream_index (GstAviDemux * avi)
2583 guint64 offset = avi->offset;
2588 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2590 /* get chunk information */
2591 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2592 if (res != GST_FLOW_OK)
2594 else if (GST_BUFFER_SIZE (buf) < 8)
2597 /* check tag first before blindy trying to read 'size' bytes */
2598 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2599 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2600 if (tag == GST_RIFF_TAG_LIST) {
2601 /* this is the movi tag */
2602 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2603 (8 + GST_ROUND_UP_2 (size)));
2604 offset += 8 + GST_ROUND_UP_2 (size);
2605 gst_buffer_unref (buf);
2606 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2607 if (res != GST_FLOW_OK)
2609 else if (GST_BUFFER_SIZE (buf) < 8)
2611 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2612 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2615 if (tag != GST_RIFF_TAG_idx1)
2620 gst_buffer_unref (buf);
2622 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2624 /* read chunk, advance offset */
2625 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2626 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2629 GST_DEBUG ("will parse index chunk size %u for tag %"
2630 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2632 gst_avi_demux_parse_index (avi, buf);
2634 #ifndef GST_DISABLE_GST_DEBUG
2635 /* debug our indexes */
2638 GstAviStream *stream;
2640 for (i = 0; i < avi->num_streams; i++) {
2641 stream = &avi->stream[i];
2642 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2643 i, stream->idx_n, stream->total_bytes);
2652 GST_DEBUG_OBJECT (avi,
2653 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2658 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2659 gst_buffer_unref (buf);
2664 GST_WARNING_OBJECT (avi,
2665 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2666 GST_FOURCC_ARGS (tag));
2667 gst_buffer_unref (buf);
2672 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2673 gst_buffer_unref (buf);
2679 * gst_avi_demux_stream_index_push:
2680 * @avi: avi demuxer object.
2685 gst_avi_demux_stream_index_push (GstAviDemux * avi)
2687 guint64 offset = avi->idx1_offset;
2692 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2694 /* get chunk information */
2695 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
2698 /* check tag first before blindly trying to read 'size' bytes */
2699 if (tag == GST_RIFF_TAG_LIST) {
2700 /* this is the movi tag */
2701 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2702 (8 + GST_ROUND_UP_2 (size)));
2703 avi->idx1_offset = offset + 8 + GST_ROUND_UP_2 (size);
2704 /* issue seek to allow chain function to handle it and return! */
2705 perform_seek_to_offset (avi, avi->idx1_offset);
2709 if (tag != GST_RIFF_TAG_idx1)
2712 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2714 /* flush chunk header */
2715 gst_adapter_flush (avi->adapter, 8);
2716 /* read chunk payload */
2717 buf = gst_adapter_take_buffer (avi->adapter, size);
2720 /* advance offset */
2721 offset += 8 + GST_ROUND_UP_2 (size);
2723 GST_DEBUG ("will parse index chunk size %u for tag %"
2724 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2726 avi->offset = avi->first_movi_offset - 8;
2727 gst_avi_demux_parse_index (avi, buf);
2729 #ifndef GST_DISABLE_GST_DEBUG
2730 /* debug our indexes */
2733 GstAviStream *stream;
2735 for (i = 0; i < avi->num_streams; i++) {
2736 stream = &avi->stream[i];
2737 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2738 i, stream->idx_n, stream->total_bytes);
2747 GST_DEBUG_OBJECT (avi,
2748 "taking data from adapter failed: pos=%" G_GUINT64_FORMAT " size=%u",
2754 GST_WARNING_OBJECT (avi,
2755 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2756 GST_FOURCC_ARGS (tag));
2762 * gst_avi_demux_peek_tag:
2764 * Returns the tag and size of the next chunk
2766 static GstFlowReturn
2767 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2770 GstFlowReturn res = GST_FLOW_OK;
2771 GstBuffer *buf = NULL;
2775 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2776 if (res != GST_FLOW_OK)
2779 bufsize = GST_BUFFER_SIZE (buf);
2783 bufdata = GST_BUFFER_DATA (buf);
2785 *tag = GST_READ_UINT32_LE (bufdata);
2786 *size = GST_READ_UINT32_LE (bufdata + 4);
2788 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2789 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2790 *size, offset + 8, offset + 8 + (gint64) * size);
2793 gst_buffer_unref (buf);
2800 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2805 GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
2806 res = GST_FLOW_ERROR;
2812 * gst_avi_demux_next_data_buffer:
2814 * Returns the offset and size of the next buffer
2815 * Position is the position of the buffer (after tag and size)
2817 static GstFlowReturn
2818 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2819 guint32 * tag, guint * size)
2821 guint64 off = *offset;
2826 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2827 if (res != GST_FLOW_OK)
2829 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2830 off += 8 + 4; /* skip tag + size + subtag */
2842 * gst_avi_demux_stream_scan:
2843 * @avi: calling element (used for debugging/errors).
2845 * Scan the file for all chunks to "create" a new index.
2849 gst_avi_demux_stream_scan (GstAviDemux * avi)
2852 GstAviStream *stream;
2861 * - implement non-seekable source support.
2863 GST_DEBUG_OBJECT (avi, "Creating index");
2865 /* get the size of the file */
2866 format = GST_FORMAT_BYTES;
2867 if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
2871 /* guess the total amount of entries we expect */
2875 GstAviIndexEntry entry;
2878 /* start reading data buffers to find the id and offset */
2879 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2880 if (G_UNLIKELY (res != GST_FLOW_OK))
2884 stream = gst_avi_demux_stream_for_id (avi, tag);
2885 if (G_UNLIKELY (!stream))
2888 /* we can't figure out the keyframes, assume they all are */
2889 entry.flags = GST_AVI_KEYFRAME;
2893 /* and add to the index of this stream */
2894 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2898 /* update position */
2899 pos += GST_ROUND_UP_2 (size);
2900 if (G_UNLIKELY (pos > length)) {
2901 GST_WARNING_OBJECT (avi,
2902 "Stopping index lookup since we are further than EOF");
2908 avi->have_index = gst_avi_demux_do_index_stats (avi);
2915 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2916 ("Cannot allocate memory for %u*%u=%u bytes",
2917 (guint) sizeof (GstAviIndexEntry), num,
2918 (guint) sizeof (GstAviIndexEntry) * num));
2924 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
2928 GstAviStream *stream;
2930 total = GST_CLOCK_TIME_NONE;
2932 /* all streams start at a timestamp 0 */
2933 for (i = 0; i < avi->num_streams; i++) {
2934 GstClockTime duration, hduration;
2935 gst_riff_strh *strh;
2937 stream = &avi->stream[i];
2938 if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh)))
2941 /* get header duration for the stream */
2942 hduration = stream->hdr_duration;
2943 /* index duration calculated during parsing */
2944 duration = stream->idx_duration;
2946 /* now pick a good duration */
2947 if (GST_CLOCK_TIME_IS_VALID (duration)) {
2948 /* index gave valid duration, use that */
2949 GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT,
2950 stream, GST_TIME_ARGS (duration));
2952 /* fall back to header info to calculate a duration */
2953 duration = hduration;
2955 GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT,
2956 i, GST_TIME_ARGS (duration));
2957 /* set duration for the stream */
2958 stream->duration = duration;
2960 /* find total duration */
2961 if (total == GST_CLOCK_TIME_NONE ||
2962 (GST_CLOCK_TIME_IS_VALID (duration) && duration > total))
2966 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
2967 /* now update the duration for those streams where we had none */
2968 for (i = 0; i < avi->num_streams; i++) {
2969 stream = &avi->stream[i];
2971 if (!GST_CLOCK_TIME_IS_VALID (stream->duration)
2972 || stream->duration == 0) {
2973 stream->duration = total;
2975 GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT,
2976 stream, GST_TIME_ARGS (total));
2981 /* and set the total duration in the segment. */
2982 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
2983 GST_TIME_ARGS (total));
2985 gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
2988 /* returns FALSE if there are no pads to deliver event to,
2989 * otherwise TRUE (whatever the outcome of event sending),
2990 * takes ownership of the event. */
2992 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
2994 gboolean result = FALSE;
2997 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
2998 GST_EVENT_TYPE_NAME (event), avi->num_streams);
3000 for (i = 0; i < avi->num_streams; i++) {
3001 GstAviStream *stream = &avi->stream[i];
3005 gst_pad_push_event (stream->pad, gst_event_ref (event));
3008 gst_event_unref (event);
3013 gst_avi_demux_check_seekability (GstAviDemux * avi)
3016 gboolean seekable = FALSE;
3017 gint64 start = -1, stop = -1;
3019 query = gst_query_new_seeking (GST_FORMAT_BYTES);
3020 if (!gst_pad_peer_query (avi->sinkpad, query)) {
3021 GST_DEBUG_OBJECT (avi, "seeking query failed");
3025 gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
3027 /* try harder to query upstream size if we didn't get it the first time */
3028 if (seekable && stop == -1) {
3029 GstFormat fmt = GST_FORMAT_BYTES;
3031 GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
3032 gst_pad_query_peer_duration (avi->sinkpad, &fmt, &stop);
3035 /* if upstream doesn't know the size, it's likely that it's not seekable in
3036 * practice even if it technically may be seekable */
3037 if (seekable && (start != 0 || stop <= start)) {
3038 GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
3042 if (!avi->element_index) {
3043 GST_DEBUG_OBJECT (avi, "no index");
3048 GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
3049 G_GUINT64_FORMAT ")", seekable, start, stop);
3050 avi->seekable = seekable;
3052 gst_query_unref (query);
3056 * Read AVI headers when streaming
3058 static GstFlowReturn
3059 gst_avi_demux_stream_header_push (GstAviDemux * avi)
3061 GstFlowReturn ret = GST_FLOW_OK;
3066 GstBuffer *buf = NULL, *sub = NULL;
3070 GstTagList *tags = NULL;
3072 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
3074 switch (avi->header_state) {
3075 case GST_AVI_DEMUX_HEADER_TAG_LIST:
3076 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3077 avi->offset += 8 + GST_ROUND_UP_2 (size);
3078 if (tag != GST_RIFF_TAG_LIST)
3079 goto header_no_list;
3081 gst_adapter_flush (avi->adapter, 8);
3082 /* Find the 'hdrl' LIST tag */
3083 GST_DEBUG ("Reading %d bytes", size);
3084 buf = gst_adapter_take_buffer (avi->adapter, size);
3086 if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
3087 goto header_no_hdrl;
3091 gst_adapter_flush (avi->adapter, 1);
3093 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
3095 /* the hdrl starts with a 'avih' header */
3096 if (!gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3098 goto header_no_avih;
3100 if (tag != GST_RIFF_TAG_avih)
3101 goto header_no_avih;
3103 if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3104 goto header_wrong_avih;
3106 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
3108 /* now, read the elements from the header until the end */
3109 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3111 /* sub can be NULL on empty tags */
3116 case GST_RIFF_TAG_LIST:
3117 if (GST_BUFFER_SIZE (sub) < 4)
3120 switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
3121 case GST_RIFF_LIST_strl:
3122 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3124 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3125 ("failed to parse stream, ignoring"));
3130 case GST_RIFF_LIST_odml:
3131 gst_avi_demux_parse_odml (avi, sub);
3135 GST_WARNING_OBJECT (avi,
3136 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3137 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
3140 case GST_RIFF_TAG_JUNQ:
3141 case GST_RIFF_TAG_JUNK:
3146 gst_avi_demux_parse_idit (avi, sub);
3149 GST_WARNING_OBJECT (avi,
3150 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
3151 offset, GST_FOURCC_ARGS (tag));
3153 case GST_RIFF_TAG_JUNQ:
3154 case GST_RIFF_TAG_JUNK:
3156 /* move to next chunk */
3158 gst_buffer_unref (sub);
3163 gst_buffer_unref (buf);
3164 GST_DEBUG ("elements parsed");
3166 /* check parsed streams */
3167 if (avi->num_streams == 0) {
3169 } else if (avi->num_streams != avi->avih->streams) {
3170 GST_WARNING_OBJECT (avi,
3171 "Stream header mentioned %d streams, but %d available",
3172 avi->avih->streams, avi->num_streams);
3174 GST_DEBUG ("Get junk and info next");
3175 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
3177 /* Need more data */
3181 case GST_AVI_DEMUX_HEADER_INFO:
3182 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
3184 if (gst_adapter_available (avi->adapter) < 12)
3187 data = gst_adapter_peek (avi->adapter, 12);
3188 tag = GST_READ_UINT32_LE (data);
3189 size = GST_READ_UINT32_LE (data + 4);
3190 ltag = GST_READ_UINT32_LE (data + 8);
3192 if (tag == GST_RIFF_TAG_LIST) {
3194 case GST_RIFF_LIST_movi:
3195 gst_adapter_flush (avi->adapter, 12);
3196 if (!avi->first_movi_offset)
3197 avi->first_movi_offset = avi->offset;
3199 avi->idx1_offset = avi->offset + size - 4;
3201 case GST_RIFF_LIST_INFO:
3202 GST_DEBUG ("Found INFO chunk");
3203 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3204 GST_DEBUG ("got size %d", size);
3206 gst_adapter_flush (avi->adapter, 12);
3208 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
3211 gst_adapter_flush (avi->adapter, 1);
3212 gst_riff_parse_info (GST_ELEMENT_CAST (avi), buf, &tags);
3214 if (avi->globaltags) {
3215 gst_tag_list_insert (avi->globaltags, tags,
3216 GST_TAG_MERGE_REPLACE);
3218 avi->globaltags = tags;
3222 gst_buffer_unref (buf);
3224 avi->offset += GST_ROUND_UP_2 (size) - 4;
3226 GST_DEBUG ("skipping INFO LIST prefix");
3229 /* Need more data */
3234 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3235 avi->offset += 8 + GST_ROUND_UP_2 (size);
3236 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3237 // ??? goto iterate; ???
3239 /* Need more data */
3245 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3246 avi->offset += 8 + GST_ROUND_UP_2 (size);
3247 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3250 /* Need more data */
3257 GST_WARNING ("unhandled header state: %d", avi->header_state);
3262 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3263 avi->num_streams, avi->stream[0].indexes);
3265 GST_DEBUG ("Found movi chunk. Starting to stream data");
3266 avi->state = GST_AVI_DEMUX_MOVI;
3268 /* no indexes in push mode, but it still sets some variables */
3269 gst_avi_demux_calculate_durations_from_index (avi);
3271 gst_avi_demux_expose_streams (avi, TRUE);
3273 /* prepare all streams for index 0 */
3274 for (i = 0; i < avi->num_streams; i++)
3275 avi->stream[i].current_entry = 0;
3277 /* create initial NEWSEGMENT event */
3278 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3279 stop = avi->segment.duration;
3281 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3284 gst_event_unref (avi->seg_event);
3285 avi->seg_event = gst_event_new_new_segment_full
3286 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3287 avi->segment.start, stop, avi->segment.time);
3289 gst_avi_demux_check_seekability (avi);
3291 /* at this point we know all the streams and we can signal the no more
3293 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3294 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3301 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3302 return GST_FLOW_ERROR;
3306 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3307 ("Invalid AVI header (no LIST at start): %"
3308 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3309 return GST_FLOW_ERROR;
3313 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3314 ("Invalid AVI header (no hdrl at start): %"
3315 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3316 gst_buffer_unref (buf);
3317 return GST_FLOW_ERROR;
3321 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3322 ("Invalid AVI header (no avih at start): %"
3323 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3325 gst_buffer_unref (sub);
3327 gst_buffer_unref (buf);
3328 return GST_FLOW_ERROR;
3332 gst_buffer_unref (buf);
3333 return GST_FLOW_ERROR;
3338 gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d)
3341 date = g_date_new_dmy (d, m, y);
3342 if (!g_date_valid (date)) {
3344 GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
3349 if (avi->globaltags == NULL)
3350 avi->globaltags = gst_tag_list_new ();
3352 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
3358 gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data)
3363 ret = sscanf (data, "%d:%d:%d", &y, &m, &d);
3365 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3368 gst_avi_demux_add_date_tag (avi, y, m, d);
3372 get_month_num (gchar * data, guint size)
3374 if (g_ascii_strncasecmp (data, "jan", 3) == 0) {
3376 } else if (g_ascii_strncasecmp (data, "feb", 3) == 0) {
3378 } else if (g_ascii_strncasecmp (data, "mar", 3) == 0) {
3380 } else if (g_ascii_strncasecmp (data, "apr", 3) == 0) {
3382 } else if (g_ascii_strncasecmp (data, "may", 3) == 0) {
3384 } else if (g_ascii_strncasecmp (data, "jun", 3) == 0) {
3386 } else if (g_ascii_strncasecmp (data, "jul", 3) == 0) {
3388 } else if (g_ascii_strncasecmp (data, "aug", 3) == 0) {
3390 } else if (g_ascii_strncasecmp (data, "sep", 3) == 0) {
3392 } else if (g_ascii_strncasecmp (data, "oct", 3) == 0) {
3394 } else if (g_ascii_strncasecmp (data, "nov", 3) == 0) {
3396 } else if (g_ascii_strncasecmp (data, "dec", 3) == 0) {
3404 gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data)
3406 gint year, month, day;
3407 gint hour, min, sec;
3412 ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour,
3415 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3418 month = get_month_num (monthstr, strlen (monthstr));
3419 gst_avi_demux_add_date_tag (avi, year, month, day);
3423 gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
3425 gchar *data = (gchar *) GST_BUFFER_DATA (buf);
3426 guint size = GST_BUFFER_SIZE (buf);
3427 gchar *safedata = NULL;
3431 * http://www.eden-foundation.org/products/code/film_date_stamp/index.html
3433 * This tag could be in one of the below formats
3434 * 2005:08:17 11:42:43
3435 * THU OCT 26 16:46:04 2006
3436 * Mon Mar 3 09:44:56 2008
3438 * FIXME: Our date tag doesn't include hours
3441 /* skip eventual initial whitespace */
3442 while (size > 0 && g_ascii_isspace (data[0])) {
3451 /* make a safe copy to add a \0 to the end of the string */
3452 safedata = g_strndup (data, size);
3454 /* test if the first char is a alpha or a number */
3455 if (g_ascii_isdigit (data[0])) {
3456 gst_avi_demux_parse_idit_nums_only (avi, safedata);
3459 } else if (g_ascii_isalpha (data[0])) {
3460 gst_avi_demux_parse_idit_text (avi, safedata);
3468 GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
3472 * Read full AVI headers.
3474 static GstFlowReturn
3475 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3478 GstBuffer *buf, *sub = NULL;
3482 GstElement *element = GST_ELEMENT_CAST (avi);
3484 GstTagList *tags = NULL;
3486 stamp = gst_util_get_timestamp ();
3488 /* the header consists of a 'hdrl' LIST tag */
3489 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3490 if (res != GST_FLOW_OK)
3491 goto pull_range_failed;
3492 else if (tag != GST_RIFF_TAG_LIST)
3494 else if (GST_BUFFER_SIZE (buf) < 4)
3497 GST_DEBUG_OBJECT (avi, "parsing headers");
3499 /* Find the 'hdrl' LIST tag */
3500 while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
3501 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3502 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
3505 gst_buffer_unref (buf);
3507 /* read new chunk */
3508 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3509 if (res != GST_FLOW_OK)
3510 goto pull_range_failed;
3511 else if (tag != GST_RIFF_TAG_LIST)
3513 else if (GST_BUFFER_SIZE (buf) < 4)
3517 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3519 /* the hdrl starts with a 'avih' header */
3520 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3522 else if (tag != GST_RIFF_TAG_avih)
3524 else if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3527 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3529 /* now, read the elements from the header until the end */
3530 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3531 /* sub can be NULL on empty tags */
3536 case GST_RIFF_TAG_LIST:
3541 if (GST_BUFFER_SIZE (sub) < 4)
3544 data = GST_BUFFER_DATA (sub);
3545 fourcc = GST_READ_UINT32_LE (data);
3548 case GST_RIFF_LIST_strl:
3549 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3550 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3551 ("failed to parse stream, ignoring"));
3556 case GST_RIFF_LIST_odml:
3557 gst_avi_demux_parse_odml (avi, sub);
3560 case GST_RIFF_LIST_INFO:
3561 GST_BUFFER_DATA (sub) = data + 4;
3562 GST_BUFFER_SIZE (sub) -= 4;
3563 gst_riff_parse_info (element, sub, &tags);
3565 if (avi->globaltags) {
3566 gst_tag_list_insert (avi->globaltags, tags,
3567 GST_TAG_MERGE_REPLACE);
3569 avi->globaltags = tags;
3575 GST_WARNING_OBJECT (avi,
3576 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3577 GST_FOURCC_ARGS (fourcc));
3578 GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
3579 GST_BUFFER_SIZE (sub));
3581 case GST_RIFF_TAG_JUNQ:
3582 case GST_RIFF_TAG_JUNK:
3588 gst_avi_demux_parse_idit (avi, sub);
3591 GST_WARNING_OBJECT (avi,
3592 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3593 GST_FOURCC_ARGS (tag), offset);
3594 GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
3595 GST_BUFFER_SIZE (sub));
3597 case GST_RIFF_TAG_JUNQ:
3598 case GST_RIFF_TAG_JUNK:
3601 gst_buffer_unref (sub);
3606 gst_buffer_unref (buf);
3607 GST_DEBUG ("elements parsed");
3609 /* check parsed streams */
3610 if (avi->num_streams == 0)
3612 else if (avi->num_streams != avi->avih->streams) {
3613 GST_WARNING_OBJECT (avi,
3614 "Stream header mentioned %d streams, but %d available",
3615 avi->avih->streams, avi->num_streams);
3618 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3619 G_GUINT64_FORMAT, avi->offset);
3621 /* Now, find the data (i.e. skip all junk between header and data) */
3627 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3628 if (res != GST_FLOW_OK) {
3629 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3630 goto pull_range_failed;
3631 } else if (GST_BUFFER_SIZE (buf) < 12) {
3632 GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
3633 GST_BUFFER_SIZE (buf));
3634 gst_buffer_unref (buf);
3635 return GST_FLOW_ERROR;
3638 data = GST_BUFFER_DATA (buf);
3640 tag = GST_READ_UINT32_LE (data);
3641 size = GST_READ_UINT32_LE (data + 4);
3642 ltag = GST_READ_UINT32_LE (data + 8);
3644 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3645 GST_FOURCC_ARGS (tag), size);
3646 GST_MEMDUMP ("Tag content", data, GST_BUFFER_SIZE (buf));
3647 gst_buffer_unref (buf);
3650 case GST_RIFF_TAG_LIST:{
3652 case GST_RIFF_LIST_movi:
3653 GST_DEBUG_OBJECT (avi,
3654 "Reached the 'movi' tag, we're done with skipping");
3656 case GST_RIFF_LIST_INFO:
3658 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3660 if (res != GST_FLOW_OK) {
3661 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3662 goto pull_range_failed;
3664 GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
3666 GST_DEBUG ("skipping INFO LIST prefix");
3667 avi->offset += (4 - GST_ROUND_UP_2 (size));
3668 gst_buffer_unref (buf);
3672 sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
3673 gst_riff_parse_info (element, sub, &tags);
3675 if (avi->globaltags) {
3676 gst_tag_list_insert (avi->globaltags, tags,
3677 GST_TAG_MERGE_REPLACE);
3679 avi->globaltags = tags;
3684 gst_buffer_unref (sub);
3687 gst_buffer_unref (buf);
3688 /* gst_riff_read_chunk() has already advanced avi->offset */
3691 GST_WARNING_OBJECT (avi,
3692 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3693 GST_FOURCC_ARGS (ltag));
3694 avi->offset += 8 + GST_ROUND_UP_2 (size);
3700 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3701 GST_FOURCC_ARGS (tag));
3703 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3704 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3705 /* Only get buffer for debugging if the memdump is needed */
3706 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
3707 res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf);
3708 if (res != GST_FLOW_OK) {
3709 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3710 goto pull_range_failed;
3712 GST_MEMDUMP ("Junk", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
3713 gst_buffer_unref (buf);
3715 avi->offset += 8 + GST_ROUND_UP_2 (size);
3721 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3722 avi->num_streams, avi->stream[0].indexes);
3724 /* create or read stream index (for seeking) */
3725 if (avi->stream[0].indexes != NULL) {
3726 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3727 gst_avi_demux_read_subindexes_pull (avi);
3729 if (!avi->have_index) {
3730 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
3731 gst_avi_demux_stream_index (avi);
3733 /* still no index, scan */
3734 if (!avi->have_index) {
3735 gst_avi_demux_stream_scan (avi);
3737 /* still no index.. this is a fatal error for now.
3738 * FIXME, we should switch to plain push mode without seeking
3739 * instead of failing. */
3740 if (!avi->have_index)
3744 /* use the indexes now to construct nice durations */
3745 gst_avi_demux_calculate_durations_from_index (avi);
3747 gst_avi_demux_expose_streams (avi, FALSE);
3749 /* create initial NEWSEGMENT event */
3750 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3751 stop = avi->segment.duration;
3753 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3755 /* do initial seek to the default segment values */
3756 gst_avi_demux_do_seek (avi, &avi->segment);
3758 /* prepare initial segment */
3760 gst_event_unref (avi->seg_event);
3761 avi->seg_event = gst_event_new_new_segment_full
3762 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3763 avi->segment.start, stop, avi->segment.time);
3765 stamp = gst_util_get_timestamp () - stamp;
3766 GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT,
3767 GST_TIME_ARGS (stamp));
3769 /* at this point we know all the streams and we can signal the no more
3771 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3772 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3779 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3780 ("Invalid AVI header (no LIST at start): %"
3781 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3782 gst_buffer_unref (buf);
3783 return GST_FLOW_ERROR;
3787 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3788 ("Invalid AVI header (no hdrl at start): %"
3789 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3790 gst_buffer_unref (buf);
3791 return GST_FLOW_ERROR;
3795 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3796 ("Invalid AVI header (no avih at start): %"
3797 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3799 gst_buffer_unref (sub);
3800 gst_buffer_unref (buf);
3801 return GST_FLOW_ERROR;
3805 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3806 ("Invalid AVI header (cannot parse avih at start)"));
3807 gst_buffer_unref (buf);
3808 return GST_FLOW_ERROR;
3812 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3813 return GST_FLOW_ERROR;
3817 GST_WARNING ("file without or too big index");
3818 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3819 ("Could not get/create index"));
3820 return GST_FLOW_ERROR;
3824 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3825 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3826 return GST_FLOW_ERROR;
3830 /* move a stream to @index */
3832 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
3833 GstSegment * segment, guint index)
3835 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
3837 if (segment->rate < 0.0) {
3839 /* Because we don't know the frame order we need to push from the prev keyframe
3840 * to the next keyframe. If there is a smart decoder downstream he will notice
3841 * that there are too many encoded frames send and return UNEXPECTED when there
3842 * are enough decoded frames to fill the segment. */
3843 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
3845 /* FIXME, we go back to 0, we should look at segment.start. We will however
3846 * stop earlier when the see the timestamp < segment.start */
3847 stream->start_entry = 0;
3848 stream->step_entry = index;
3849 stream->current_entry = index;
3850 stream->stop_entry = next_key;
3852 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
3853 stream->start_entry, stream->step_entry, stream->stop_entry);
3855 stream->start_entry = index;
3856 stream->step_entry = index;
3857 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
3859 if (stream->current_entry != index) {
3860 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
3861 stream->current_entry, index);
3862 stream->current_entry = index;
3863 stream->discont = TRUE;
3866 /* update the buffer info */
3867 gst_avi_demux_get_buffer_info (avi, stream, index,
3868 &stream->current_timestamp, &stream->current_ts_end,
3869 &stream->current_offset, &stream->current_offset_end);
3871 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
3872 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3873 ", off_end %" G_GUINT64_FORMAT, index,
3874 GST_TIME_ARGS (stream->current_timestamp),
3875 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3876 stream->current_offset_end);
3878 GST_DEBUG_OBJECT (avi, "Seeking to offset %" G_GUINT64_FORMAT,
3879 stream->index[index].offset);
3883 * Do the actual seeking.
3886 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3888 GstClockTime seek_time;
3891 GstAviStream *stream;
3893 seek_time = segment->last_stop;
3894 keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3896 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
3897 " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
3899 /* FIXME, this code assumes the main stream with keyframes is stream 0,
3900 * which is mostly correct... */
3901 stream = &avi->stream[avi->main_stream];
3903 /* get the entry index for the requested position */
3904 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
3905 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
3907 /* check if we are already on a keyframe */
3908 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
3909 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
3910 /* now go to the previous keyframe, this is where we should start
3912 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
3913 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
3916 /* move the main stream to this position */
3917 gst_avi_demux_move_stream (avi, stream, segment, index);
3920 /* when seeking to a keyframe, we update the result seek time
3921 * to the time of the keyframe. */
3922 seek_time = stream->current_timestamp;
3923 GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
3924 GST_TIME_ARGS (seek_time));
3927 /* the seek time is also the last_stop and stream time when going
3929 segment->last_stop = seek_time;
3930 if (segment->rate > 0.0)
3931 segment->time = seek_time;
3933 /* now set DISCONT and align the other streams */
3934 for (i = 0; i < avi->num_streams; i++) {
3935 GstAviStream *ostream;
3937 ostream = &avi->stream[i];
3938 if ((ostream == stream) || (ostream->index == NULL))
3941 /* get the entry index for the requested position */
3942 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
3944 /* move to previous keyframe */
3945 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
3946 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
3948 gst_avi_demux_move_stream (avi, ostream, segment, index);
3950 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
3951 GST_TIME_ARGS (seek_time));
3957 * Handle seek event in pull mode.
3960 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
3965 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
3969 GstSegment seeksegment = { 0, };
3973 GST_DEBUG_OBJECT (avi, "doing seek with event");
3975 gst_event_parse_seek (event, &rate, &format, &flags,
3976 &cur_type, &cur, &stop_type, &stop);
3978 /* we have to have a format as the segment format. Try to convert
3980 if (format != GST_FORMAT_TIME) {
3981 GstFormat fmt = GST_FORMAT_TIME;
3982 gboolean res = TRUE;
3984 if (cur_type != GST_SEEK_TYPE_NONE)
3985 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
3986 if (res && stop_type != GST_SEEK_TYPE_NONE)
3987 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
3993 GST_DEBUG_OBJECT (avi,
3994 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
3995 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
3996 /* FIXME: can we do anything with rate!=1.0 */
3998 GST_DEBUG_OBJECT (avi, "doing seek without event");
4003 /* save flush flag */
4004 flush = flags & GST_SEEK_FLAG_FLUSH;
4007 GstEvent *fevent = gst_event_new_flush_start ();
4009 /* for a flushing seek, we send a flush_start on all pads. This will
4010 * eventually stop streaming with a WRONG_STATE. We can thus eventually
4011 * take the STREAM_LOCK. */
4012 GST_DEBUG_OBJECT (avi, "sending flush start");
4013 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4014 gst_pad_push_event (avi->sinkpad, fevent);
4016 /* a non-flushing seek, we PAUSE the task so that we can take the
4018 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
4019 gst_pad_pause_task (avi->sinkpad);
4022 /* wait for streaming to stop */
4023 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
4024 GST_PAD_STREAM_LOCK (avi->sinkpad);
4026 /* copy segment, we need this because we still need the old
4027 * segment when we close the current segment. */
4028 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4031 GST_DEBUG_OBJECT (avi, "configuring seek");
4032 gst_segment_set_seek (&seeksegment, rate, format, flags,
4033 cur_type, cur, stop_type, stop, &update);
4035 /* do the seek, seeksegment.last_stop contains the new position, this
4036 * actually never fails. */
4037 gst_avi_demux_do_seek (avi, &seeksegment);
4040 GstEvent *fevent = gst_event_new_flush_stop ();
4042 GST_DEBUG_OBJECT (avi, "sending flush stop");
4043 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4044 gst_pad_push_event (avi->sinkpad, fevent);
4046 /* reset the last flow and mark discont, FLUSH is always DISCONT */
4047 for (i = 0; i < avi->num_streams; i++) {
4048 GST_DEBUG_OBJECT (avi, "marking DISCONT");
4049 avi->stream[i].last_flow = GST_FLOW_OK;
4050 avi->stream[i].discont = TRUE;
4052 } else if (avi->segment_running) {
4055 /* we are running the current segment and doing a non-flushing seek,
4056 * close the segment first based on the last_stop. */
4057 GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
4058 " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
4059 seg = gst_event_new_new_segment_full (TRUE,
4060 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4061 avi->segment.start, avi->segment.last_stop, avi->segment.time);
4062 gst_avi_demux_push_event (avi, seg);
4065 /* now update the real segment info */
4066 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
4068 /* post the SEGMENT_START message when we do segmented playback */
4069 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4070 gst_element_post_message (GST_ELEMENT_CAST (avi),
4071 gst_message_new_segment_start (GST_OBJECT_CAST (avi),
4072 avi->segment.format, avi->segment.last_stop));
4075 /* prepare for streaming again */
4076 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
4077 stop = avi->segment.duration;
4079 /* queue the segment event for the streaming thread. */
4081 gst_event_unref (avi->seg_event);
4082 if (avi->segment.rate > 0.0) {
4083 /* forwards goes from last_stop to stop */
4084 avi->seg_event = gst_event_new_new_segment_full (FALSE,
4085 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4086 avi->segment.last_stop, stop, avi->segment.time);
4088 /* reverse goes from start to last_stop */
4089 avi->seg_event = gst_event_new_new_segment_full (FALSE,
4090 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4091 avi->segment.start, avi->segment.last_stop, avi->segment.time);
4094 if (!avi->streaming) {
4095 avi->segment_running = TRUE;
4096 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4099 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
4106 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4112 * Handle seek event in push mode.
4115 avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4120 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4123 GstAviStream *stream;
4128 /* check we have the index */
4129 if (!avi->have_index) {
4130 GST_DEBUG_OBJECT (avi, "no seek index built, seek aborted.");
4133 GST_DEBUG_OBJECT (avi, "doing push-based seek with event");
4136 gst_event_parse_seek (event, &rate, &format, &flags,
4137 &cur_type, &cur, &stop_type, &stop);
4139 if (format != GST_FORMAT_TIME) {
4140 GstFormat fmt = GST_FORMAT_TIME;
4141 gboolean res = TRUE;
4143 if (cur_type != GST_SEEK_TYPE_NONE)
4144 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
4145 if (res && stop_type != GST_SEEK_TYPE_NONE)
4146 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
4148 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4154 GST_DEBUG_OBJECT (avi,
4155 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
4156 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
4157 /* FIXME: can we do anything with rate!=1.0 */
4159 keyframe = !!(flags & GST_SEEK_FLAG_KEY_UNIT);
4161 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
4162 " keyframe seeking:%d", GST_TIME_ARGS (cur), keyframe);
4164 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4165 * which is mostly correct... */
4166 str_num = avi->main_stream;
4167 stream = &avi->stream[avi->main_stream];
4169 /* get the entry index for the requested position */
4170 index = gst_avi_demux_index_for_time (avi, stream, cur);
4171 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
4173 /* check if we are already on a keyframe */
4174 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4175 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
4176 /* now go to the previous keyframe, this is where we should start
4178 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4179 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
4182 gst_avi_demux_get_buffer_info (avi, stream, index,
4183 &stream->current_timestamp, &stream->current_ts_end,
4184 &stream->current_offset, &stream->current_offset_end);
4186 min_offset = stream->current_offset;
4187 for (n = 0; n < avi->num_streams; n++) {
4188 GstAviStream *str = &avi->stream[n];
4192 if (n == avi->main_stream)
4195 /* get the entry index for the requested position */
4196 idx = gst_avi_demux_index_for_time (avi, str, stream->current_timestamp);
4197 GST_DEBUG_OBJECT (avi, "Got entry %u", idx);
4199 /* check if we are already on a keyframe */
4200 if (!ENTRY_IS_KEYFRAME (&str->index[idx])) {
4201 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
4202 /* now go to the previous keyframe, this is where we should start
4204 idx = gst_avi_demux_index_prev (avi, str, idx, TRUE);
4205 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", idx);
4208 gst_avi_demux_get_buffer_info (avi, str, idx, NULL, NULL, &off, NULL);
4209 if (off < min_offset) {
4210 GST_DEBUG_OBJECT (avi,
4211 "Found an earlier offset at %" G_GUINT64_FORMAT ", str %u", off, n);
4219 gst_avi_demux_get_buffer_info (avi, stream, index,
4220 &stream->current_timestamp, &stream->current_ts_end,
4221 &stream->current_offset, &stream->current_offset_end);
4223 GST_DEBUG_OBJECT (avi, "Moved to str %u, idx %u, ts %" GST_TIME_FORMAT
4224 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4225 ", off_end %" G_GUINT64_FORMAT, str_num, index,
4226 GST_TIME_ARGS (stream->current_timestamp),
4227 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4228 stream->current_offset_end);
4230 GST_DEBUG_OBJECT (avi, "Seeking to offset %" G_GUINT64_FORMAT,
4231 stream->index[index].offset);
4233 if (!perform_seek_to_offset (avi,
4234 stream->index[index].offset - (avi->stream[0].indexes ? 8 : 0))) {
4235 GST_DEBUG_OBJECT (avi, "seek event failed!");
4243 * Handle whether we can perform the seek event or if we have to let the chain
4244 * function handle seeks to build the seek indexes first.
4247 gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
4250 /* check for having parsed index already */
4251 if (!avi->have_index) {
4253 gboolean building_index;
4255 GST_OBJECT_LOCK (avi);
4256 /* handle the seek event in the chain function */
4257 avi->state = GST_AVI_DEMUX_SEEK;
4259 /* copy the event */
4260 if (avi->seek_event)
4261 gst_event_unref (avi->seek_event);
4262 avi->seek_event = gst_event_ref (event);
4264 /* set the building_index flag so that only one thread can setup the
4265 * structures for index seeking. */
4266 building_index = avi->building_index;
4267 if (!building_index) {
4268 avi->building_index = TRUE;
4269 if (avi->stream[0].indexes) {
4270 avi->odml_stream = 0;
4271 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
4272 offset = avi->odml_subidxs[0];
4274 offset = avi->idx1_offset;
4277 GST_OBJECT_UNLOCK (avi);
4279 if (!building_index) {
4280 /* seek to the first subindex or legacy index */
4281 GST_INFO_OBJECT (avi,
4282 "Seeking to legacy index/first subindex at %" G_GUINT64_FORMAT,
4284 return perform_seek_to_offset (avi, offset);
4287 /* FIXME: we have to always return true so that we don't block the seek
4289 * Note: maybe it is OK to return true if we're still building the index */
4293 return avi_demux_handle_seek_push (avi, pad, event);
4297 * Helper for gst_avi_demux_invert()
4300 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
4302 memcpy (tmp, d1, bytes);
4303 memcpy (d1, d2, bytes);
4304 memcpy (d2, tmp, bytes);
4308 #define gst_avi_demux_is_uncompressed(fourcc) \
4309 (fourcc == GST_RIFF_DIB || \
4310 fourcc == GST_RIFF_rgb || \
4311 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
4314 * Invert DIB buffers... Takes existing buffer and
4315 * returns either the buffer or a new one (with old
4316 * one dereferenced).
4317 * FIXME: can't we preallocate tmp? and remember stride, bpp?
4320 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
4327 if (stream->strh->type != GST_RIFF_FCC_vids)
4330 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
4331 return buf; /* Ignore non DIB buffers */
4334 s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
4335 if (!gst_structure_get_int (s, "bpp", &bpp)) {
4336 GST_WARNING ("Failed to retrieve depth from caps");
4340 if (stream->strf.vids == NULL) {
4341 GST_WARNING ("Failed to retrieve vids for stream");
4345 h = stream->strf.vids->height;
4346 w = stream->strf.vids->width;
4347 stride = w * (bpp / 8);
4349 buf = gst_buffer_make_writable (buf);
4350 if (GST_BUFFER_SIZE (buf) < (stride * h)) {
4351 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
4355 tmp = g_malloc (stride);
4357 for (y = 0; y < h / 2; y++) {
4358 swap_line (GST_BUFFER_DATA (buf) + stride * y,
4359 GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
4368 gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
4369 GstClockTime timestamp, guint64 offset, gboolean keyframe)
4371 /* do not add indefinitely for open-ended streaming */
4372 if (G_UNLIKELY (avi->element_index && avi->seekable)) {
4373 GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
4374 G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
4375 gst_index_add_association (avi->element_index, avi->index_id,
4376 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT : GST_ASSOCIATION_FLAG_NONE,
4377 GST_FORMAT_TIME, timestamp, GST_FORMAT_BYTES, offset, NULL);
4378 /* well, current_total determines TIME and entry DEFAULT (frame #) ... */
4379 gst_index_add_association (avi->element_index, stream->index_id,
4380 GST_ASSOCIATION_FLAG_NONE,
4381 GST_FORMAT_TIME, stream->current_total, GST_FORMAT_BYTES, offset,
4382 GST_FORMAT_DEFAULT, stream->current_entry, NULL);
4387 * Returns the aggregated GstFlowReturn.
4389 static GstFlowReturn
4390 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
4394 gboolean unexpected = FALSE, not_linked = TRUE;
4396 /* store the value */
4397 stream->last_flow = ret;
4399 /* any other error that is not-linked or eos can be returned right away */
4400 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4403 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
4404 for (i = 0; i < avi->num_streams; i++) {
4405 GstAviStream *ostream = &avi->stream[i];
4407 ret = ostream->last_flow;
4408 /* no unexpected or unlinked, return */
4409 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4412 /* we check to see if we have at least 1 unexpected or all unlinked */
4413 unexpected |= (ret == GST_FLOW_UNEXPECTED);
4414 not_linked &= (ret == GST_FLOW_NOT_LINKED);
4416 /* when we get here, we all have unlinked or unexpected */
4418 ret = GST_FLOW_NOT_LINKED;
4419 else if (unexpected)
4420 ret = GST_FLOW_UNEXPECTED;
4422 GST_LOG_OBJECT (avi, "combined %s to return %s",
4423 gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret));
4427 /* move @stream to the next position in its index */
4428 static GstFlowReturn
4429 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
4432 guint old_entry, new_entry;
4434 old_entry = stream->current_entry;
4436 new_entry = old_entry + 1;
4438 /* see if we reached the end */
4439 if (new_entry > stream->stop_entry) {
4440 if (avi->segment.rate < 0.0) {
4441 if (stream->step_entry == stream->start_entry) {
4442 /* we stepped all the way to the start, eos */
4443 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
4446 /* backwards, stop becomes step, find a new step */
4447 stream->stop_entry = stream->step_entry;
4448 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
4449 stream->stop_entry, TRUE);
4451 GST_DEBUG_OBJECT (avi,
4452 "reverse playback jump: start %u, step %u, stop %u",
4453 stream->start_entry, stream->step_entry, stream->stop_entry);
4455 /* and start from the previous keyframe now */
4456 new_entry = stream->step_entry;
4459 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
4464 if (new_entry != old_entry) {
4465 stream->current_entry = new_entry;
4466 stream->current_total = stream->index[new_entry].total;
4468 if (new_entry == old_entry + 1) {
4469 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
4470 old_entry, new_entry);
4471 /* we simply moved one step forwards, reuse current info */
4472 stream->current_timestamp = stream->current_ts_end;
4473 stream->current_offset = stream->current_offset_end;
4474 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4475 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
4477 /* we moved DISCONT, full update */
4478 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4479 &stream->current_timestamp, &stream->current_ts_end,
4480 &stream->current_offset, &stream->current_offset_end);
4481 /* and MARK discont for this stream */
4482 stream->last_flow = GST_FLOW_OK;
4483 stream->discont = TRUE;
4484 GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
4485 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4486 ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
4487 GST_TIME_ARGS (stream->current_timestamp),
4488 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4489 stream->current_offset_end);
4497 GST_DEBUG_OBJECT (avi, "we are EOS");
4498 /* setting current_timestamp to -1 marks EOS */
4499 stream->current_timestamp = -1;
4500 return GST_FLOW_UNEXPECTED;
4504 /* find the stream with the lowest current position when going forwards or with
4505 * the highest position when going backwards, this is the stream
4506 * we should push from next */
4508 gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
4510 guint64 min_time, max_time;
4511 guint stream_num, i;
4514 min_time = G_MAXUINT64;
4517 for (i = 0; i < avi->num_streams; i++) {
4519 GstAviStream *stream;
4521 stream = &avi->stream[i];
4523 /* ignore streams that finished */
4524 if (stream->last_flow == GST_FLOW_UNEXPECTED)
4527 position = stream->current_timestamp;
4529 /* position of -1 is EOS */
4530 if (position != -1) {
4531 if (rate > 0.0 && position < min_time) {
4532 min_time = position;
4534 } else if (rate < 0.0 && position >= max_time) {
4535 max_time = position;
4543 static GstFlowReturn
4544 gst_avi_demux_loop_data (GstAviDemux * avi)
4546 GstFlowReturn ret = GST_FLOW_OK;
4548 GstAviStream *stream;
4549 gboolean processed = FALSE;
4551 guint64 offset, size;
4552 GstClockTime timestamp, duration;
4553 guint64 out_offset, out_offset_end;
4555 GstAviIndexEntry *entry;
4558 stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
4561 if (G_UNLIKELY (stream_num == -1)) {
4562 GST_DEBUG_OBJECT (avi, "all streams are EOS");
4566 /* we have the stream now */
4567 stream = &avi->stream[stream_num];
4569 /* skip streams without pads */
4571 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
4576 /* get the timing info for the entry */
4577 timestamp = stream->current_timestamp;
4578 duration = stream->current_ts_end - timestamp;
4579 out_offset = stream->current_offset;
4580 out_offset_end = stream->current_offset_end;
4582 /* get the entry data info */
4583 entry = &stream->index[stream->current_entry];
4584 offset = entry->offset;
4586 keyframe = ENTRY_IS_KEYFRAME (entry);
4588 /* skip empty entries */
4590 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
4591 stream->current_entry, size, stream->pad);
4595 if (avi->segment.rate > 0.0) {
4596 /* only check this for fowards playback for now */
4597 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4598 && (timestamp > avi->segment.stop)) {
4603 GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
4604 G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
4605 stream_num, offset, offset, keyframe);
4607 /* FIXME, check large chunks and cut them up */
4609 /* pull in the data */
4610 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
4611 if (ret != GST_FLOW_OK)
4614 /* check for short buffers, this is EOS as well */
4615 if (GST_BUFFER_SIZE (buf) < size)
4618 /* invert the picture if needed */
4619 buf = gst_avi_demux_invert (stream, buf);
4621 /* mark non-keyframes */
4623 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4625 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4627 GST_BUFFER_TIMESTAMP (buf) = timestamp;
4628 GST_BUFFER_DURATION (buf) = duration;
4629 GST_BUFFER_OFFSET (buf) = out_offset;
4630 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
4632 /* mark discont when pending */
4633 if (stream->discont) {
4634 GST_DEBUG_OBJECT (avi, "setting DISCONT flag");
4635 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4636 stream->discont = FALSE;
4639 gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
4641 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4643 /* update current position in the segment */
4644 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, timestamp);
4646 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %u, ts %"
4647 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4648 ", off_end %" G_GUINT64_FORMAT,
4649 GST_BUFFER_SIZE (buf), GST_TIME_ARGS (timestamp),
4650 GST_TIME_ARGS (duration), out_offset, out_offset_end);
4652 ret = gst_pad_push (stream->pad, buf);
4654 /* mark as processed, we increment the frame and byte counters then
4655 * leave the while loop and return the GstFlowReturn */
4658 if (avi->segment.rate < 0) {
4659 if (timestamp > avi->segment.stop && ret == GST_FLOW_UNEXPECTED) {
4660 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4661 * we are at the end of the segment, so we just need to jump
4662 * back to the previous section. */
4663 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4668 /* move to next item */
4669 ret = gst_avi_demux_advance (avi, stream, ret);
4672 ret = gst_avi_demux_combine_flows (avi, stream, ret);
4673 } while (!processed);
4681 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
4682 ret = GST_FLOW_UNEXPECTED;
4687 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4688 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4689 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
4690 ret = GST_FLOW_UNEXPECTED;
4691 /* move to next stream */
4696 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
4697 " size=%" G_GUINT64_FORMAT, offset, size);
4702 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4703 ", only got %d/%" G_GUINT64_FORMAT " bytes (truncated file?)", offset,
4704 GST_BUFFER_SIZE (buf), size);
4705 gst_buffer_unref (buf);
4706 ret = GST_FLOW_UNEXPECTED;
4712 * Read data. If we have an index it delegates to
4713 * gst_avi_demux_process_next_entry().
4715 static GstFlowReturn
4716 gst_avi_demux_stream_data (GstAviDemux * avi)
4721 GstFlowReturn res = GST_FLOW_OK;
4722 GstFormat format = GST_FORMAT_TIME;
4724 if (G_UNLIKELY (avi->have_eos)) {
4725 /* Clean adapter, we're done */
4726 gst_adapter_clear (avi->adapter);
4727 return GST_FLOW_UNEXPECTED;
4730 if (G_UNLIKELY (avi->todrop)) {
4733 if ((drop = gst_adapter_available (avi->adapter))) {
4734 if (drop > avi->todrop)
4736 GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
4737 gst_adapter_flush (avi->adapter, drop);
4738 avi->todrop -= drop;
4739 avi->offset += drop;
4743 /* Iterate until need more data, so adapter won't grow too much */
4745 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4749 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4750 GST_FOURCC_ARGS (tag), size);
4752 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4753 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4754 GST_LOG ("Chunk ok");
4755 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4756 GST_DEBUG ("Found sub-index tag");
4757 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4758 /* accept 0 size buffer here */
4759 avi->abort_buffering = FALSE;
4760 GST_DEBUG (" skipping %d bytes for now", size);
4761 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4764 } else if (tag == GST_RIFF_TAG_RIFF) {
4765 /* RIFF tags can appear in ODML files, just jump over them */
4766 if (gst_adapter_available (avi->adapter) >= 12) {
4767 GST_DEBUG ("Found RIFF tag, skipping RIFF header");
4768 gst_adapter_flush (avi->adapter, 12);
4772 } else if (tag == GST_RIFF_TAG_idx1) {
4773 GST_DEBUG ("Found index tag");
4774 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4775 /* accept 0 size buffer here */
4776 avi->abort_buffering = FALSE;
4777 GST_DEBUG (" skipping %d bytes for now", size);
4778 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4781 } else if (tag == GST_RIFF_TAG_LIST) {
4782 /* movi chunks might be grouped in rec list */
4783 if (gst_adapter_available (avi->adapter) >= 12) {
4784 GST_DEBUG ("Found LIST tag, skipping LIST header");
4785 gst_adapter_flush (avi->adapter, 12);
4789 } else if (tag == GST_RIFF_TAG_JUNK || tag == GST_RIFF_TAG_JUNQ) {
4790 /* rec list might contain JUNK chunks */
4791 GST_DEBUG ("Found JUNK tag");
4792 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4793 /* accept 0 size buffer here */
4794 avi->abort_buffering = FALSE;
4795 GST_DEBUG (" skipping %d bytes for now", size);
4796 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4800 GST_DEBUG ("No more stream chunks, send EOS");
4801 avi->have_eos = TRUE;
4802 return GST_FLOW_UNEXPECTED;
4805 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4806 /* supposedly one hopes to catch a nicer chunk later on ... */
4807 /* FIXME ?? give up here rather than possibly ending up going
4808 * through the whole file */
4809 if (avi->abort_buffering) {
4810 avi->abort_buffering = FALSE;
4811 gst_adapter_flush (avi->adapter, 8);
4815 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4816 GST_FOURCC_ARGS (tag), size);
4818 stream_nr = CHUNKID_TO_STREAMNR (tag);
4820 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4822 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4823 stream_nr, GST_FOURCC_ARGS (tag));
4824 avi->offset += 8 + GST_ROUND_UP_2 (size);
4825 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4827 GstAviStream *stream;
4828 GstClockTime next_ts = 0;
4832 gst_adapter_flush (avi->adapter, 8);
4835 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
4836 /* patch the size */
4837 GST_BUFFER_SIZE (buf) = size;
4838 offset = avi->offset;
4839 avi->offset += 8 + GST_ROUND_UP_2 (size);
4841 stream = &avi->stream[stream_nr];
4843 /* set delay (if any)
4844 if (stream->strh->init_frames == stream->current_frame &&
4846 stream->delay = next_ts;
4849 /* parsing of corresponding header may have failed */
4850 if (G_UNLIKELY (!stream->pad)) {
4851 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
4852 GST_FOURCC_ARGS (tag));
4853 gst_buffer_unref (buf);
4855 GstClockTime dur_ts = 0;
4857 /* get time of this buffer */
4858 gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
4859 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4862 gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
4864 /* increment our positions */
4865 stream->current_entry++;
4866 stream->current_total += size;
4868 /* invert the picture if needed */
4869 buf = gst_avi_demux_invert (stream, buf);
4871 gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
4872 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4875 GST_BUFFER_TIMESTAMP (buf) = next_ts;
4876 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
4877 if (stream->strh->type == GST_RIFF_FCC_vids) {
4878 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
4879 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
4881 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4882 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
4885 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4886 GST_DEBUG_OBJECT (avi,
4887 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
4888 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
4889 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
4890 GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_OFFSET (buf),
4891 size, GST_PAD_NAME (stream->pad));
4893 /* update current position in the segment */
4894 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
4896 /* mark discont when pending */
4897 if (G_UNLIKELY (stream->discont)) {
4898 GST_DEBUG_OBJECT (avi, "Setting DISCONT");
4899 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4900 stream->discont = FALSE;
4902 res = gst_pad_push (stream->pad, buf);
4905 res = gst_avi_demux_combine_flows (avi, stream, res);
4906 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4907 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
4920 GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
4921 gst_format_get_name (format));
4922 res = GST_FLOW_ERROR;
4928 * Send pending tags.
4931 push_tag_lists (GstAviDemux * avi)
4939 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
4941 for (i = 0; i < avi->num_streams; i++) {
4942 GstAviStream *stream = &avi->stream[i];
4943 GstPad *pad = stream->pad;
4945 tags = stream->taglist;
4948 GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
4950 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (avi), pad, tags);
4951 stream->taglist = NULL;
4955 if (!(tags = avi->globaltags))
4956 tags = gst_tag_list_new ();
4958 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
4959 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
4961 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
4962 gst_element_found_tags (GST_ELEMENT_CAST (avi), tags);
4963 avi->globaltags = NULL;
4964 avi->got_tags = FALSE;
4968 gst_avi_demux_loop (GstPad * pad)
4971 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4973 switch (avi->state) {
4974 case GST_AVI_DEMUX_START:
4975 res = gst_avi_demux_stream_init_pull (avi);
4976 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4977 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4980 avi->state = GST_AVI_DEMUX_HEADER;
4982 case GST_AVI_DEMUX_HEADER:
4983 res = gst_avi_demux_stream_header_pull (avi);
4984 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4985 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4988 avi->state = GST_AVI_DEMUX_MOVI;
4990 case GST_AVI_DEMUX_MOVI:
4991 if (G_UNLIKELY (avi->seg_event)) {
4992 gst_avi_demux_push_event (avi, avi->seg_event);
4993 avi->seg_event = NULL;
4995 if (G_UNLIKELY (avi->got_tags)) {
4996 push_tag_lists (avi);
4998 /* process each index entry in turn */
4999 res = gst_avi_demux_loop_data (avi);
5001 /* pause when error */
5002 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5003 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
5008 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
5009 res = GST_FLOW_ERROR;
5017 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
5018 avi->segment_running = FALSE;
5019 gst_pad_pause_task (avi->sinkpad);
5021 if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
5022 gboolean push_eos = TRUE;
5024 if (res == GST_FLOW_UNEXPECTED) {
5025 /* handle end-of-stream/segment */
5026 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
5029 if ((stop = avi->segment.stop) == -1)
5030 stop = avi->segment.duration;
5032 GST_INFO_OBJECT (avi, "sending segment_done");
5034 gst_element_post_message
5035 (GST_ELEMENT_CAST (avi),
5036 gst_message_new_segment_done (GST_OBJECT_CAST (avi),
5037 GST_FORMAT_TIME, stop));
5041 /* for fatal errors we post an error message */
5042 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
5043 (_("Internal data stream error.")),
5044 ("streaming stopped, reason %s", gst_flow_get_name (res)));
5047 GST_INFO_OBJECT (avi, "sending eos");
5048 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
5049 (res == GST_FLOW_UNEXPECTED)) {
5050 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
5051 (NULL), ("got eos but no streams (yet)"));
5058 static GstFlowReturn
5059 gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
5062 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5065 if (GST_BUFFER_IS_DISCONT (buf)) {
5066 GST_DEBUG_OBJECT (avi, "got DISCONT");
5067 gst_adapter_clear (avi->adapter);
5068 /* mark all streams DISCONT */
5069 for (i = 0; i < avi->num_streams; i++)
5070 avi->stream[i].discont = TRUE;
5073 if (GST_BUFFER_IS_DISCONT (buf))
5074 gst_adapter_clear (avi->adapter);
5076 GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
5077 gst_adapter_push (avi->adapter, buf);
5079 switch (avi->state) {
5080 case GST_AVI_DEMUX_START:
5081 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
5082 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5086 case GST_AVI_DEMUX_HEADER:
5087 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
5088 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5092 case GST_AVI_DEMUX_MOVI:
5093 if (G_UNLIKELY (avi->seg_event)) {
5094 gst_avi_demux_push_event (avi, avi->seg_event);
5095 avi->seg_event = NULL;
5097 if (G_UNLIKELY (avi->got_tags)) {
5098 push_tag_lists (avi);
5100 res = gst_avi_demux_stream_data (avi);
5102 case GST_AVI_DEMUX_SEEK:
5108 /* obtain and parse indexes */
5109 if (avi->stream[0].indexes && !gst_avi_demux_read_subindexes_push (avi))
5110 /* seek in subindex read function failed */
5113 if (!avi->stream[0].indexes && !avi->have_index
5114 && avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
5115 gst_avi_demux_stream_index_push (avi);
5117 if (avi->have_index) {
5118 /* use the indexes now to construct nice durations */
5119 gst_avi_demux_calculate_durations_from_index (avi);
5121 /* still parsing indexes */
5125 GST_OBJECT_LOCK (avi);
5126 event = avi->seek_event;
5127 avi->seek_event = NULL;
5128 GST_OBJECT_UNLOCK (avi);
5130 /* calculate and perform seek */
5131 if (!avi_demux_handle_seek_push (avi, avi->sinkpad, event))
5134 gst_event_unref (event);
5135 avi->state = GST_AVI_DEMUX_MOVI;
5139 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
5140 ("Illegal internal state"));
5141 res = GST_FLOW_ERROR;
5145 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
5146 gst_flow_get_name (res));
5148 if (G_UNLIKELY (avi->abort_buffering))
5149 goto abort_buffering;
5156 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("failed to read indexes"));
5157 return GST_FLOW_ERROR;
5161 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("push mode seek failed"));
5162 return GST_FLOW_ERROR;
5166 avi->abort_buffering = FALSE;
5167 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
5168 return GST_FLOW_ERROR;
5173 gst_avi_demux_sink_activate (GstPad * sinkpad)
5175 if (gst_pad_check_pull_range (sinkpad)) {
5176 GST_DEBUG ("going to pull mode");
5177 return gst_pad_activate_pull (sinkpad, TRUE);
5179 GST_DEBUG ("going to push (streaming) mode");
5180 return gst_pad_activate_push (sinkpad, TRUE);
5185 gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
5187 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
5190 avi->segment_running = TRUE;
5191 avi->streaming = FALSE;
5192 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
5195 avi->segment_running = FALSE;
5196 return gst_pad_stop_task (sinkpad);
5201 gst_avi_demux_activate_push (GstPad * pad, gboolean active)
5203 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
5206 GST_DEBUG ("avi: activating push/chain function");
5207 avi->streaming = TRUE;
5209 /* create index for some push based seeking if not provided */
5210 GST_OBJECT_LOCK (avi);
5211 if (!avi->element_index) {
5212 GST_DEBUG_OBJECT (avi, "creating index");
5213 avi->element_index = gst_index_factory_make ("memindex");
5215 GST_OBJECT_UNLOCK (avi);
5216 /* object lock might be taken again */
5217 gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (avi),
5221 GST_DEBUG ("avi: deactivating push/chain function");
5228 gst_avi_demux_set_index (GstElement * element, GstIndex * index)
5230 GstAviDemux *avi = GST_AVI_DEMUX (element);
5232 GST_OBJECT_LOCK (avi);
5233 if (avi->element_index)
5234 gst_object_unref (avi->element_index);
5236 avi->element_index = gst_object_ref (index);
5238 avi->element_index = NULL;
5240 GST_OBJECT_UNLOCK (avi);
5241 /* object lock might be taken again */
5243 gst_index_get_writer_id (index, GST_OBJECT_CAST (element), &avi->index_id);
5244 GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
5248 gst_avi_demux_get_index (GstElement * element)
5250 GstIndex *result = NULL;
5251 GstAviDemux *avi = GST_AVI_DEMUX (element);
5253 GST_OBJECT_LOCK (avi);
5254 if (avi->element_index)
5255 result = gst_object_ref (avi->element_index);
5256 GST_OBJECT_UNLOCK (avi);
5258 GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
5263 static GstStateChangeReturn
5264 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
5266 GstStateChangeReturn ret;
5267 GstAviDemux *avi = GST_AVI_DEMUX (element);
5269 switch (transition) {
5270 case GST_STATE_CHANGE_READY_TO_PAUSED:
5271 avi->streaming = FALSE;
5272 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
5278 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
5279 if (ret == GST_STATE_CHANGE_FAILURE)
5282 switch (transition) {
5283 case GST_STATE_CHANGE_PAUSED_TO_READY:
5284 gst_avi_demux_reset (avi);