2 * Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
3 * Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>)
4 * Copyright (C) <2009-2010> STEricsson <benjamin.gaignard@stericsson.com>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
21 /* Element-Checklist-Version: 5 */
24 * SECTION:element-avidemux
26 * Demuxes an .avi file into raw or compressed audio and/or video streams.
28 * This element supports both push and pull-based scheduling, depending on the
29 * capabilities of the upstream elements.
32 * <title>Example launch line</title>
34 * gst-launch filesrc location=test.avi ! avidemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink
35 * ]| Play (parse and decode) an .avi file and try to output it to
36 * an automatically detected soundcard and videosink. If the AVI file contains
37 * compressed audio or video data, this will only work if you have the
38 * right decoder elements/plugins installed.
41 * Last reviewed on 2006-12-29 (0.10.6)
51 #include "gst/riff/riff-media.h"
52 #include "gstavidemux.h"
54 #include <gst/gst-i18n-plugin.h>
55 #include <gst/base/gstadapter.h>
58 #define DIV_ROUND_UP(s,v) (((s) + ((v)-1)) / (v))
60 #define GST_AVI_KEYFRAME 1
61 #define ENTRY_IS_KEYFRAME(e) ((e)->flags == GST_AVI_KEYFRAME)
62 #define ENTRY_SET_KEYFRAME(e) ((e)->flags = GST_AVI_KEYFRAME)
63 #define ENTRY_UNSET_KEYFRAME(e) ((e)->flags = 0)
66 GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
67 #define GST_CAT_DEFAULT avidemux_debug
69 static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
72 GST_STATIC_CAPS ("video/x-msvideo")
75 static void gst_avi_demux_base_init (GstAviDemuxClass * klass);
76 static void gst_avi_demux_class_init (GstAviDemuxClass * klass);
77 static void gst_avi_demux_init (GstAviDemux * avi);
78 static void gst_avi_demux_finalize (GObject * object);
80 static void gst_avi_demux_reset (GstAviDemux * avi);
83 static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
85 static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event);
86 static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
88 static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
91 static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
93 static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad);
94 static gboolean gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query);
95 static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
96 gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
98 static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
99 static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
101 static gboolean gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
103 static void gst_avi_demux_loop (GstPad * pad);
104 static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad);
105 static gboolean gst_avi_demux_sink_activate_pull (GstPad * sinkpad,
107 static gboolean gst_avi_demux_activate_push (GstPad * pad, gboolean active);
108 static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstBuffer * buf);
110 static void gst_avi_demux_set_index (GstElement * element, GstIndex * index);
111 static GstIndex *gst_avi_demux_get_index (GstElement * element);
112 static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
113 GstStateChange transition);
114 static void gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi);
115 static void gst_avi_demux_get_buffer_info (GstAviDemux * avi,
116 GstAviStream * stream, guint entry_n, GstClockTime * timestamp,
117 GstClockTime * ts_end, guint64 * offset, guint64 * offset_end);
119 static void gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf);
121 static GstElementClass *parent_class = NULL;
123 /* GObject methods */
126 gst_avi_demux_get_type (void)
128 static GType avi_demux_type = 0;
130 if (!avi_demux_type) {
131 static const GTypeInfo avi_demux_info = {
132 sizeof (GstAviDemuxClass),
133 (GBaseInitFunc) gst_avi_demux_base_init,
135 (GClassInitFunc) gst_avi_demux_class_init,
138 sizeof (GstAviDemux),
140 (GInstanceInitFunc) gst_avi_demux_init,
144 g_type_register_static (GST_TYPE_ELEMENT,
145 "GstAviDemux", &avi_demux_info, 0);
148 return avi_demux_type;
152 gst_avi_demux_base_init (GstAviDemuxClass * klass)
154 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
155 GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl;
156 GstCaps *audcaps, *vidcaps, *subcaps;
158 audcaps = gst_riff_create_audio_template_caps ();
159 gst_caps_append (audcaps, gst_caps_new_simple ("audio/x-avi-unknown", NULL));
160 audiosrctempl = gst_pad_template_new ("audio_%02d",
161 GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
163 vidcaps = gst_riff_create_video_template_caps ();
164 gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
165 gst_caps_append (vidcaps, gst_caps_new_simple ("video/x-avi-unknown", NULL));
166 videosrctempl = gst_pad_template_new ("video_%02d",
167 GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
169 subcaps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
170 subsrctempl = gst_pad_template_new ("subtitle_%02d",
171 GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
172 gst_element_class_add_pad_template (element_class, audiosrctempl);
173 gst_element_class_add_pad_template (element_class, videosrctempl);
174 gst_element_class_add_pad_template (element_class, subsrctempl);
175 gst_element_class_add_pad_template (element_class,
176 gst_static_pad_template_get (&sink_templ));
177 gst_element_class_set_details_simple (element_class, "Avi demuxer",
179 "Demultiplex an avi file into audio and video",
180 "Erik Walthinsen <omega@cse.ogi.edu>, "
181 "Wim Taymans <wim.taymans@chello.be>, "
182 "Thijs Vermeir <thijsvermeir@gmail.com>");
186 gst_avi_demux_class_init (GstAviDemuxClass * klass)
188 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
189 GObjectClass *gobject_class = (GObjectClass *) klass;
191 GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
192 0, "Demuxer for AVI streams");
194 parent_class = g_type_class_peek_parent (klass);
196 gobject_class->finalize = gst_avi_demux_finalize;
197 gstelement_class->change_state =
198 GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
200 gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_avi_demux_set_index);
201 gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_avi_demux_get_index);
205 gst_avi_demux_init (GstAviDemux * avi)
207 avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
208 gst_pad_set_activate_function (avi->sinkpad,
209 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
210 gst_pad_set_activatepull_function (avi->sinkpad,
211 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_pull));
212 gst_pad_set_activatepush_function (avi->sinkpad,
213 GST_DEBUG_FUNCPTR (gst_avi_demux_activate_push));
214 gst_pad_set_chain_function (avi->sinkpad,
215 GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
216 gst_pad_set_event_function (avi->sinkpad,
217 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
218 gst_element_add_pad (GST_ELEMENT_CAST (avi), avi->sinkpad);
220 avi->adapter = gst_adapter_new ();
222 gst_avi_demux_reset (avi);
226 gst_avi_demux_finalize (GObject * object)
228 GstAviDemux *avi = GST_AVI_DEMUX (object);
230 GST_DEBUG ("AVI: finalize");
232 g_object_unref (avi->adapter);
234 G_OBJECT_CLASS (parent_class)->finalize (object);
238 gst_avi_demux_reset_stream (GstAviDemux * avi, GstAviStream * stream)
240 g_free (stream->strh);
241 g_free (stream->strf.data);
242 g_free (stream->name);
243 g_free (stream->index);
244 g_free (stream->indexes);
245 if (stream->initdata)
246 gst_buffer_unref (stream->initdata);
247 if (stream->extradata)
248 gst_buffer_unref (stream->extradata);
250 if (stream->exposed) {
251 gst_pad_set_active (stream->pad, FALSE);
252 gst_element_remove_pad (GST_ELEMENT_CAST (avi), stream->pad);
254 gst_object_unref (stream->pad);
256 if (stream->taglist) {
257 gst_tag_list_free (stream->taglist);
258 stream->taglist = NULL;
260 memset (stream, 0, sizeof (GstAviStream));
264 gst_avi_demux_reset (GstAviDemux * avi)
268 GST_DEBUG ("AVI: reset");
270 for (i = 0; i < avi->num_streams; i++)
271 gst_avi_demux_reset_stream (avi, &avi->stream[i]);
273 avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
274 avi->num_streams = 0;
275 avi->num_v_streams = 0;
276 avi->num_a_streams = 0;
277 avi->num_t_streams = 0;
278 avi->main_stream = -1;
280 avi->state = GST_AVI_DEMUX_START;
282 avi->building_index = FALSE;
284 avi->index_offset = 0;
288 if (avi->element_index)
289 gst_object_unref (avi->element_index);
290 avi->element_index = NULL;
292 if (avi->seg_event) {
293 gst_event_unref (avi->seg_event);
294 avi->seg_event = NULL;
296 if (avi->seek_event) {
297 gst_event_unref (avi->seek_event);
298 avi->seek_event = NULL;
302 gst_tag_list_free (avi->globaltags);
303 avi->globaltags = NULL;
305 avi->got_tags = TRUE; /* we always want to push global tags */
306 avi->have_eos = FALSE;
307 avi->seekable = TRUE;
309 gst_adapter_clear (avi->adapter);
311 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
315 /* GstElement methods */
318 static const GstFormat *
319 gst_avi_demux_get_src_formats (GstPad * pad)
321 GstAviStream *stream = gst_pad_get_element_private (pad);
323 static const GstFormat src_a_formats[] = {
329 static const GstFormat src_v_formats[] = {
335 return (stream->strh->type == GST_RIFF_FCC_auds ?
336 src_a_formats : src_v_formats);
340 /* assumes stream->strf.auds->av_bps != 0 */
341 static inline GstClockTime
342 avi_stream_convert_bytes_to_time_unchecked (GstAviStream * stream,
345 return gst_util_uint64_scale_int (bytes, GST_SECOND,
346 stream->strf.auds->av_bps);
349 static inline guint64
350 avi_stream_convert_time_to_bytes_unchecked (GstAviStream * stream,
353 return gst_util_uint64_scale_int (time, stream->strf.auds->av_bps,
357 /* assumes stream->strh->rate != 0 */
358 static inline GstClockTime
359 avi_stream_convert_frames_to_time_unchecked (GstAviStream * stream,
362 return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
366 static inline guint64
367 avi_stream_convert_time_to_frames_unchecked (GstAviStream * stream,
370 return gst_util_uint64_scale (time, stream->strh->rate,
371 stream->strh->scale * GST_SECOND);
375 gst_avi_demux_src_convert (GstPad * pad,
376 GstFormat src_format,
377 gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
379 GstAviStream *stream = gst_pad_get_element_private (pad);
383 "Received src_format:%s, src_value:%" G_GUINT64_FORMAT
384 ", dest_format:%s", gst_format_get_name (src_format), src_value,
385 gst_format_get_name (*dest_format));
387 if (G_UNLIKELY (src_format == *dest_format)) {
388 *dest_value = src_value;
391 if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
395 if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
396 (src_format == GST_FORMAT_BYTES
397 || *dest_format == GST_FORMAT_BYTES))) {
402 switch (src_format) {
403 case GST_FORMAT_TIME:
404 switch (*dest_format) {
405 case GST_FORMAT_BYTES:
406 *dest_value = gst_util_uint64_scale_int (src_value,
407 stream->strf.auds->av_bps, GST_SECOND);
409 case GST_FORMAT_DEFAULT:
411 gst_util_uint64_scale_round (src_value, stream->strh->rate,
412 stream->strh->scale * GST_SECOND);
419 case GST_FORMAT_BYTES:
420 switch (*dest_format) {
421 case GST_FORMAT_TIME:
422 if (stream->strf.auds->av_bps != 0) {
423 *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
433 case GST_FORMAT_DEFAULT:
434 switch (*dest_format) {
435 case GST_FORMAT_TIME:
437 avi_stream_convert_frames_to_time_unchecked (stream, src_value);
450 "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
451 gst_format_get_name (*dest_format), *dest_value);
455 static const GstQueryType *
456 gst_avi_demux_get_src_query_types (GstPad * pad)
458 static const GstQueryType src_types[] = {
470 gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query)
473 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
475 GstAviStream *stream = gst_pad_get_element_private (pad);
477 if (!stream->strh || !stream->strf.data)
478 return gst_pad_query_default (pad, query);
480 switch (GST_QUERY_TYPE (query)) {
481 case GST_QUERY_POSITION:{
484 GST_DEBUG ("pos query for stream %u: frames %u, bytes %u",
485 stream->num, stream->current_entry, stream->current_total);
487 /* FIXME, this looks clumsy */
488 if (stream->strh->type == GST_RIFF_FCC_auds) {
489 if (stream->is_vbr) {
491 pos = gst_util_uint64_scale ((gint64) stream->current_entry *
492 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
493 GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
494 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
495 } else if (stream->strf.auds->av_bps != 0) {
497 pos = gst_util_uint64_scale (stream->current_total, GST_SECOND,
498 (guint64) stream->strf.auds->av_bps);
499 GST_DEBUG_OBJECT (avi,
500 "CBR convert bytes %u, time %" GST_TIME_FORMAT,
501 stream->current_total, GST_TIME_ARGS (pos));
502 } else if (stream->idx_n != 0 && stream->total_bytes != 0) {
503 /* calculate timestamps based on percentage of length */
504 guint64 xlen = avi->avih->us_frame *
505 avi->avih->tot_frames * GST_USECOND;
507 if (stream->is_vbr) {
508 pos = gst_util_uint64_scale (xlen, stream->current_entry,
510 GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
511 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
513 pos = gst_util_uint64_scale (xlen, stream->current_total,
514 stream->total_bytes);
515 GST_DEBUG_OBJECT (avi,
516 "CBR perc convert bytes %u, time %" GST_TIME_FORMAT,
517 stream->current_total, GST_TIME_ARGS (pos));
524 if (stream->strh->rate != 0) {
525 pos = gst_util_uint64_scale ((guint64) stream->current_entry *
526 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
528 pos = stream->current_entry * avi->avih->us_frame * GST_USECOND;
532 GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
533 gst_query_set_position (query, GST_FORMAT_TIME, pos);
535 GST_WARNING ("pos query failed");
538 case GST_QUERY_DURATION:
541 GstClockTime duration;
543 /* only act on audio or video streams */
544 if (stream->strh->type != GST_RIFF_FCC_auds &&
545 stream->strh->type != GST_RIFF_FCC_vids) {
550 /* take stream duration, fall back to avih duration */
551 if ((duration = stream->duration) == -1)
552 duration = avi->duration;
554 gst_query_parse_duration (query, &fmt, NULL);
557 case GST_FORMAT_TIME:
558 gst_query_set_duration (query, fmt, duration);
560 case GST_FORMAT_DEFAULT:
563 GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
566 if (stream->idx_n >= 0)
567 gst_query_set_duration (query, fmt, stream->idx_n);
568 else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
569 duration, &fmt, &dur))
570 gst_query_set_duration (query, fmt, dur);
579 case GST_QUERY_SEEKING:{
582 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
583 if (fmt == GST_FORMAT_TIME) {
584 gboolean seekable = TRUE;
586 if (avi->streaming) {
587 seekable = avi->seekable;
590 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
591 0, stream->duration);
596 case GST_QUERY_CONVERT:{
597 GstFormat src_fmt, dest_fmt;
598 gint64 src_val, dest_val;
600 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
601 if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
603 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
605 res = gst_pad_query_default (pad, query);
609 res = gst_pad_query_default (pad, query);
613 gst_object_unref (avi);
618 static const GstEventMask *
619 gst_avi_demux_get_event_mask (GstPad * pad)
621 static const GstEventMask masks[] = {
622 {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
631 gst_avi_demux_seek_streams (GstAviDemux * avi, guint64 offset, gboolean before)
633 GstAviStream *stream;
634 GstIndexEntry *entry;
636 gint64 val, min = offset;
638 for (i = 0; i < avi->num_streams; i++) {
639 stream = &avi->stream[i];
641 entry = gst_index_get_assoc_entry (avi->element_index, stream->index_id,
642 before ? GST_INDEX_LOOKUP_BEFORE : GST_INDEX_LOOKUP_AFTER,
643 GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_BYTES, offset);
647 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
648 GST_DEBUG_OBJECT (avi, "stream %d, previous entry at %"
649 G_GUINT64_FORMAT, i, val);
657 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
658 stream->current_entry = 0;
659 stream->current_total = 0;
663 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
664 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT,
667 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &val);
668 stream->current_total = val;
669 gst_index_entry_assoc_map (entry, GST_FORMAT_DEFAULT, &val);
670 stream->current_entry = val;
677 gst_avi_demux_index_entry_offset_search (GstAviIndexEntry * entry,
680 if (entry->offset < *offset)
682 else if (entry->offset > *offset)
688 gst_avi_demux_seek_streams_index (GstAviDemux * avi, guint64 offset,
691 GstAviStream *stream;
692 GstAviIndexEntry *entry;
694 gint64 val, min = offset;
697 for (i = 0; i < avi->num_streams; i++) {
698 stream = &avi->stream[i];
700 /* compensate for chunk header */
703 gst_util_array_binary_search (stream->index, stream->idx_n,
704 sizeof (GstAviIndexEntry),
705 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
706 before ? GST_SEARCH_MODE_BEFORE : GST_SEARCH_MODE_AFTER, &offset, NULL);
710 index = entry - stream->index;
714 val = stream->index[index].offset;
715 GST_DEBUG_OBJECT (avi,
716 "stream %d, previous entry at %" G_GUINT64_FORMAT, i, val);
724 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
725 stream->current_entry = 0;
726 stream->current_total = 0;
730 val = stream->index[index].offset - 8;
731 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT, i,
734 stream->current_total = stream->index[index].total;
735 stream->current_entry = index;
741 #define GST_AVI_SEEK_PUSH_DISPLACE (4 * GST_SECOND)
744 gst_avi_demux_handle_sink_event (GstPad * pad, GstEvent * event)
747 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
749 GST_DEBUG_OBJECT (avi,
750 "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
752 switch (GST_EVENT_TYPE (event)) {
753 case GST_EVENT_NEWSEGMENT:
757 gint64 start, stop, time, offset = 0;
761 /* some debug output */
762 gst_segment_init (&segment, GST_FORMAT_UNDEFINED);
763 gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
764 &start, &stop, &time);
765 gst_segment_set_newsegment_full (&segment, update, rate, arate, format,
767 GST_DEBUG_OBJECT (avi,
768 "received format %d newsegment %" GST_SEGMENT_FORMAT, format,
771 /* chain will send initial newsegment after pads have been added */
772 if (avi->state != GST_AVI_DEMUX_MOVI) {
773 GST_DEBUG_OBJECT (avi, "still starting, eating event");
777 /* we only expect a BYTE segment, e.g. following a seek */
778 if (format != GST_FORMAT_BYTES) {
779 GST_DEBUG_OBJECT (avi, "unsupported segment format, ignoring");
783 if (avi->have_index) {
784 GstAviIndexEntry *entry;
785 guint i = 0, index = 0, k = 0;
786 GstAviStream *stream;
788 /* compensate chunk header, stored index offset points after header */
790 /* find which stream we're on */
792 stream = &avi->stream[i];
794 /* find the index for start bytes offset */
795 entry = gst_util_array_binary_search (stream->index,
796 stream->idx_n, sizeof (GstAviIndexEntry),
797 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
798 GST_SEARCH_MODE_AFTER, &start, NULL);
802 index = entry - stream->index;
804 /* we are on the stream with a chunk start offset closest to start */
805 if (!offset || stream->index[index].offset < offset) {
806 offset = stream->index[index].offset;
809 /* exact match needs no further searching */
810 if (stream->index[index].offset == start)
812 } while (++i < avi->num_streams);
815 stream = &avi->stream[k];
817 /* so we have no idea what is to come, or where we are */
819 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
823 /* get the ts corresponding to start offset bytes for the stream */
824 gst_avi_demux_get_buffer_info (avi, stream, index,
825 (GstClockTime *) & time, NULL, NULL, NULL);
826 } else if (avi->element_index) {
827 GstIndexEntry *entry;
829 /* Let's check if we have an index entry for this position */
830 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
831 GST_INDEX_LOOKUP_AFTER, GST_ASSOCIATION_FLAG_NONE,
832 GST_FORMAT_BYTES, start);
834 /* we can not go where we have not yet been before ... */
836 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
840 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time);
841 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &offset);
843 GST_WARNING_OBJECT (avi, "no index data, forcing EOS");
847 stop = GST_CLOCK_TIME_NONE;
849 /* set up segment and send downstream */
850 gst_segment_set_newsegment_full (&avi->segment, update, rate, arate,
851 GST_FORMAT_TIME, time, stop, time);
852 GST_DEBUG_OBJECT (avi, "Pushing newseg update %d, rate %g, "
853 "applied rate %g, format %d, start %" G_GINT64_FORMAT ", "
854 "stop %" G_GINT64_FORMAT, update, rate, arate, GST_FORMAT_TIME,
856 gst_avi_demux_push_event (avi,
857 gst_event_new_new_segment_full (update, rate, arate, GST_FORMAT_TIME,
860 GST_DEBUG_OBJECT (avi, "next chunk expected at %" G_GINT64_FORMAT, start);
862 /* adjust state for streaming thread accordingly */
864 gst_avi_demux_seek_streams_index (avi, offset, FALSE);
866 gst_avi_demux_seek_streams (avi, offset, FALSE);
868 /* set up streaming thread */
869 g_assert (offset >= start);
871 avi->todrop = offset - start;
874 gst_event_unref (event);
879 avi->have_eos = TRUE;
884 if (avi->state != GST_AVI_DEMUX_MOVI) {
885 gst_event_unref (event);
886 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
887 (NULL), ("got eos and didn't receive a complete header object"));
888 } else if (!gst_avi_demux_push_event (avi, event)) {
889 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
890 (NULL), ("got eos but no streams (yet)"));
894 case GST_EVENT_FLUSH_STOP:
898 gst_adapter_clear (avi->adapter);
899 avi->have_eos = FALSE;
900 for (i = 0; i < avi->num_streams; i++) {
901 avi->stream[i].last_flow = GST_FLOW_OK;
902 avi->stream[i].discont = TRUE;
904 /* fall through to default case so that the event gets passed downstream */
907 res = gst_pad_event_default (pad, event);
911 gst_object_unref (avi);
917 gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
920 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
922 GST_DEBUG_OBJECT (avi,
923 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
925 switch (GST_EVENT_TYPE (event)) {
927 if (!avi->streaming) {
928 res = gst_avi_demux_handle_seek (avi, pad, event);
930 res = gst_avi_demux_handle_seek_push (avi, pad, event);
932 gst_event_unref (event);
935 case GST_EVENT_NAVIGATION:
937 gst_event_unref (event);
940 res = gst_pad_event_default (pad, event);
944 gst_object_unref (avi);
949 /* streaming helper (push) */
952 * gst_avi_demux_peek_chunk_info:
954 * @tag: holder for tag
955 * @size: holder for tag size
957 * Peek next chunk info (tag and size)
959 * Returns: TRUE when one chunk info has been got
962 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
964 const guint8 *data = NULL;
966 if (gst_adapter_available (avi->adapter) < 8)
969 data = gst_adapter_peek (avi->adapter, 8);
970 *tag = GST_READ_UINT32_LE (data);
971 *size = GST_READ_UINT32_LE (data + 4);
977 * gst_avi_demux_peek_chunk:
979 * @tag: holder for tag
980 * @size: holder for tag size
982 * Peek enough data for one full chunk
984 * Returns: %TRUE when one chunk has been got
987 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
989 guint32 peek_size = 0;
992 if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
995 /* size 0 -> empty data buffer would surprise most callers,
996 * large size -> do not bother trying to squeeze that into adapter,
997 * so we throw poor man's exception, which can be caught if caller really
998 * wants to handle 0 size chunk */
999 if (!(*size) || (*size) >= (1 << 30))
1002 peek_size = (*size + 1) & ~1;
1003 available = gst_adapter_available (avi->adapter);
1005 GST_DEBUG_OBJECT (avi,
1006 "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
1007 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
1009 if (available < (8 + peek_size))
1017 GST_INFO_OBJECT (avi, "Failed to peek");
1022 GST_INFO_OBJECT (avi,
1023 "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
1024 GST_FOURCC_ARGS (*tag));
1025 /* chain should give up */
1026 avi->abort_buffering = TRUE;
1031 GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
1032 available, 8 + peek_size);
1040 * gst_avi_demux_parse_file_header:
1041 * @element: caller element (used for errors/debug).
1042 * @buf: input data to be used for parsing.
1044 * "Open" a RIFF/AVI file. The buffer should be at least 12
1045 * bytes long. Takes ownership of @buf.
1047 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
1048 * Throws an error, caller should error out (fatal).
1051 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
1056 stamp = gst_util_get_timestamp ();
1058 /* riff_parse posts an error */
1059 if (!gst_riff_parse_file_header (element, buf, &doctype))
1062 if (doctype != GST_RIFF_RIFF_AVI)
1065 stamp = gst_util_get_timestamp () - stamp;
1066 GST_DEBUG_OBJECT (element, "header parsing took %" GST_TIME_FORMAT,
1067 GST_TIME_ARGS (stamp));
1074 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
1075 ("File is not an AVI file: %" GST_FOURCC_FORMAT,
1076 GST_FOURCC_ARGS (doctype)));
1082 * Read AVI file tag when streaming
1084 static GstFlowReturn
1085 gst_avi_demux_stream_init_push (GstAviDemux * avi)
1087 if (gst_adapter_available (avi->adapter) >= 12) {
1090 tmp = gst_adapter_take_buffer (avi->adapter, 12);
1092 GST_DEBUG ("Parsing avi header");
1093 if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), tmp)) {
1094 return GST_FLOW_ERROR;
1096 GST_DEBUG ("header ok");
1099 avi->state = GST_AVI_DEMUX_HEADER;
1107 static GstFlowReturn
1108 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
1111 GstBuffer *buf = NULL;
1113 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
1114 if (res != GST_FLOW_OK)
1116 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
1126 GST_DEBUG_OBJECT (avi, "error parsing file header");
1127 return GST_FLOW_ERROR;
1131 /* AVI header handling */
1133 * gst_avi_demux_parse_avih:
1134 * @avi: caller element (used for errors/debug).
1135 * @buf: input data to be used for parsing.
1136 * @avih: pointer to structure (filled in by function) containing
1137 * stream information (such as flags, number of streams, etc.).
1139 * Read 'avih' header. Discards buffer after use.
1141 * Returns: TRUE on success, FALSE otherwise. Throws an error if
1142 * the header is invalid. The caller should error out
1146 gst_avi_demux_parse_avih (GstAviDemux * avi,
1147 GstBuffer * buf, gst_riff_avih ** _avih)
1149 gst_riff_avih *avih;
1154 if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
1155 goto avih_too_small;
1157 avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1159 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1160 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
1161 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
1162 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
1163 avih->flags = GUINT32_FROM_LE (avih->flags);
1164 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
1165 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
1166 avih->streams = GUINT32_FROM_LE (avih->streams);
1167 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
1168 avih->width = GUINT32_FROM_LE (avih->width);
1169 avih->height = GUINT32_FROM_LE (avih->height);
1170 avih->scale = GUINT32_FROM_LE (avih->scale);
1171 avih->rate = GUINT32_FROM_LE (avih->rate);
1172 avih->start = GUINT32_FROM_LE (avih->start);
1173 avih->length = GUINT32_FROM_LE (avih->length);
1177 GST_INFO_OBJECT (avi, "avih tag found:");
1178 GST_INFO_OBJECT (avi, " us_frame %u", avih->us_frame);
1179 GST_INFO_OBJECT (avi, " max_bps %u", avih->max_bps);
1180 GST_INFO_OBJECT (avi, " pad_gran %u", avih->pad_gran);
1181 GST_INFO_OBJECT (avi, " flags 0x%08x", avih->flags);
1182 GST_INFO_OBJECT (avi, " tot_frames %u", avih->tot_frames);
1183 GST_INFO_OBJECT (avi, " init_frames %u", avih->init_frames);
1184 GST_INFO_OBJECT (avi, " streams %u", avih->streams);
1185 GST_INFO_OBJECT (avi, " bufsize %u", avih->bufsize);
1186 GST_INFO_OBJECT (avi, " width %u", avih->width);
1187 GST_INFO_OBJECT (avi, " height %u", avih->height);
1188 GST_INFO_OBJECT (avi, " scale %u", avih->scale);
1189 GST_INFO_OBJECT (avi, " rate %u", avih->rate);
1190 GST_INFO_OBJECT (avi, " start %u", avih->start);
1191 GST_INFO_OBJECT (avi, " length %u", avih->length);
1194 gst_buffer_unref (buf);
1196 if (avih->us_frame != 0 && avih->tot_frames != 0)
1198 (guint64) avih->us_frame * (guint64) avih->tot_frames * 1000;
1200 avi->duration = GST_CLOCK_TIME_NONE;
1202 GST_INFO_OBJECT (avi, " header duration %" GST_TIME_FORMAT,
1203 GST_TIME_ARGS (avi->duration));
1210 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No buffer"));
1215 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
1216 ("Too small avih (%d available, %d needed)",
1217 GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
1218 gst_buffer_unref (buf);
1224 * gst_avi_demux_parse_superindex:
1225 * @avi: caller element (used for debugging/errors).
1226 * @buf: input data to use for parsing.
1227 * @locations: locations in the file (byte-offsets) that contain
1228 * the actual indexes (see get_avi_demux_parse_subindex()).
1229 * The array ends with GST_BUFFER_OFFSET_NONE.
1231 * Reads superindex (openDML-2 spec stuff) from the provided data.
1233 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
1234 * on error, but they are not fatal.
1237 gst_avi_demux_parse_superindex (GstAviDemux * avi,
1238 GstBuffer * buf, guint64 ** _indexes)
1248 size = buf ? GST_BUFFER_SIZE (buf) : 0;
1252 data = GST_BUFFER_DATA (buf);
1254 /* check type of index. The opendml2 specs state that
1255 * there should be 4 dwords per array entry. Type can be
1256 * either frame or field (and we don't care). */
1257 if (GST_READ_UINT16_LE (data) != 4 ||
1258 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
1259 GST_WARNING_OBJECT (avi,
1260 "Superindex for stream has unexpected "
1261 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1262 GST_READ_UINT16_LE (data), data[2], data[3]);
1263 bpe = GST_READ_UINT16_LE (data) * 4;
1265 num = GST_READ_UINT32_LE (&data[4]);
1267 GST_DEBUG_OBJECT (avi, "got %d indexes", num);
1269 indexes = g_new (guint64, num + 1);
1270 for (i = 0; i < num; i++) {
1271 if (size < 24 + bpe * (i + 1))
1273 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1274 GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
1276 indexes[i] = GST_BUFFER_OFFSET_NONE;
1277 *_indexes = indexes;
1279 gst_buffer_unref (buf);
1286 GST_ERROR_OBJECT (avi,
1287 "Not enough data to parse superindex (%d available, 24 needed)", size);
1289 gst_buffer_unref (buf);
1294 /* add an entry to the index of a stream. @num should be an estimate of the
1295 * total amount of index entries for all streams and is used to dynamically
1296 * allocate memory for the index entries. */
1297 static inline gboolean
1298 gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
1299 guint num, GstAviIndexEntry * entry)
1301 /* ensure index memory */
1302 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
1303 guint idx_max = stream->idx_max;
1304 GstAviIndexEntry *new_idx;
1306 /* we need to make some more room */
1308 /* initial size guess, assume each stream has an equal amount of entries,
1309 * overshoot with at least 8K */
1310 idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
1312 idx_max += 8192 / sizeof (GstAviIndexEntry);
1313 GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
1314 stream->idx_max, idx_max);
1316 new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
1317 /* out of memory, if this fails stream->index is untouched. */
1318 if (G_UNLIKELY (!new_idx))
1321 stream->index = new_idx;
1322 stream->idx_max = idx_max;
1325 /* update entry total and stream stats. The entry total can be converted to
1326 * the timestamp of the entry easily. */
1327 if (stream->strh->type == GST_RIFF_FCC_auds) {
1330 if (stream->is_vbr) {
1331 entry->total = stream->total_blocks;
1333 entry->total = stream->total_bytes;
1335 blockalign = stream->strf.auds->blockalign;
1337 stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
1339 stream->total_blocks++;
1341 if (stream->is_vbr) {
1342 entry->total = stream->idx_n;
1344 entry->total = stream->total_bytes;
1347 stream->total_bytes += entry->size;
1348 if (ENTRY_IS_KEYFRAME (entry))
1349 stream->n_keyframes++;
1352 GST_LOG_OBJECT (avi,
1353 "Adding stream %u, index entry %d, kf %d, size %u "
1354 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
1355 stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
1357 stream->index[stream->idx_n++] = *entry;
1362 /* given @entry_n in @stream, calculate info such as timestamps and
1363 * offsets for the entry. */
1365 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1366 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1367 guint64 * offset, guint64 * offset_end)
1369 GstAviIndexEntry *entry;
1371 entry = &stream->index[entry_n];
1373 if (stream->is_vbr) {
1374 /* VBR stream next timestamp */
1375 if (stream->strh->type == GST_RIFF_FCC_auds) {
1378 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
1380 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1385 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
1387 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1390 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
1391 /* constant rate stream */
1394 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
1396 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
1397 entry->total + entry->size);
1399 if (stream->strh->type == GST_RIFF_FCC_vids) {
1400 /* video offsets are the frame number */
1404 *offset_end = entry_n + 1;
1406 /* no offsets for audio */
1414 /* collect and debug stats about the indexes for all streams.
1415 * This method is also responsible for filling in the stream duration
1416 * as measured by the amount of index entries.
1418 * Returns TRUE if the index is not empty, else FALSE */
1420 gst_avi_demux_do_index_stats (GstAviDemux * avi)
1422 guint total_idx = 0;
1424 #ifndef GST_DISABLE_GST_DEBUG
1425 guint total_max = 0;
1428 /* get stream stats now */
1429 for (i = 0; i < avi->num_streams; i++) {
1430 GstAviStream *stream;
1432 if (G_UNLIKELY (!(stream = &avi->stream[i])))
1434 if (G_UNLIKELY (!stream->strh))
1436 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
1439 /* we interested in the end_ts of the last entry, which is the total
1440 * duration of this stream */
1441 gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
1442 NULL, &stream->idx_duration, NULL, NULL);
1444 total_idx += stream->idx_n;
1445 #ifndef GST_DISABLE_GST_DEBUG
1446 total_max += stream->idx_max;
1448 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
1449 "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
1450 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
1451 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
1452 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
1453 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
1455 total_idx *= sizeof (GstAviIndexEntry);
1456 #ifndef GST_DISABLE_GST_DEBUG
1457 total_max *= sizeof (GstAviIndexEntry);
1459 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
1460 total_max, total_idx, total_max - total_idx);
1462 if (total_idx == 0) {
1463 GST_WARNING_OBJECT (avi, "Index is empty !");
1470 * gst_avi_demux_parse_subindex:
1472 * @buf: input data to use for parsing.
1473 * @stream: stream context.
1474 * @entries_list: a list (returned by the function) containing all the
1475 * indexes parsed in this specific subindex. The first
1476 * entry is also a pointer to allocated memory that needs
1477 * to be free´ed. May be NULL if no supported indexes were
1480 * Reads superindex (openDML-2 spec stuff) from the provided data.
1481 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1483 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1484 * throw an error, caller should bail out asap.
1487 gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
1499 size = GST_BUFFER_SIZE (buf);
1505 data = GST_BUFFER_DATA (buf);
1507 /* We don't support index-data yet */
1509 goto not_implemented;
1511 /* check type of index. The opendml2 specs state that
1512 * there should be 4 dwords per array entry. Type can be
1513 * either frame or field (and we don't care). */
1514 bpe = (data[2] & 0x01) ? 12 : 8;
1515 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1516 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1517 GST_WARNING_OBJECT (avi,
1518 "Superindex for stream %d has unexpected "
1519 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1520 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1521 bpe = GST_READ_UINT16_LE (data) * 4;
1523 num = GST_READ_UINT32_LE (&data[4]);
1524 baseoff = GST_READ_UINT64_LE (&data[12]);
1526 /* If there's nothing, just return ! */
1530 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1532 for (i = 0; i < num; i++) {
1533 GstAviIndexEntry entry;
1535 if (size < 24 + bpe * (i + 1))
1538 /* fill in offset and size. offset contains the keyframe flag in the
1540 entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1541 entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1543 if (stream->strh->type == GST_RIFF_FCC_auds) {
1544 /* all audio frames are keyframes */
1545 ENTRY_SET_KEYFRAME (&entry);
1547 /* else read flags */
1548 entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
1550 entry.size &= ~0x80000000;
1553 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
1556 gst_buffer_unref (buf);
1563 GST_ERROR_OBJECT (avi,
1564 "Not enough data to parse subindex (%d available, 24 needed)", size);
1565 gst_buffer_unref (buf);
1566 return TRUE; /* continue */
1570 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1571 ("Subindex-is-data is not implemented"));
1572 gst_buffer_unref (buf);
1577 GST_DEBUG_OBJECT (avi, "the index is empty");
1578 gst_buffer_unref (buf);
1583 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1584 ("Cannot allocate memory for %u*%u=%u bytes",
1585 (guint) sizeof (GstAviIndexEntry), num,
1586 (guint) sizeof (GstAviIndexEntry) * num));
1587 gst_buffer_unref (buf);
1593 * Create and push a flushing seek event upstream
1596 perform_seek_to_offset (GstAviDemux * demux, guint64 offset)
1601 GST_DEBUG_OBJECT (demux, "Seeking to %" G_GUINT64_FORMAT, offset);
1604 gst_event_new_seek (1.0, GST_FORMAT_BYTES,
1605 GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
1606 GST_SEEK_TYPE_NONE, -1);
1608 res = gst_pad_push_event (demux->sinkpad, event);
1611 demux->offset = offset;
1616 * Read AVI index when streaming
1619 gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
1621 guint32 tag = 0, size;
1622 GstBuffer *buf = NULL;
1625 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1627 if (avi->odml_subidxs[avi->odml_subidx] != avi->offset)
1630 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1633 /* this is the ODML chunk we expect */
1634 odml_stream = avi->odml_stream;
1636 if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + odml_stream / 10,
1637 '0' + odml_stream % 10)) &&
1638 (tag != GST_MAKE_FOURCC ('0' + odml_stream / 10,
1639 '0' + odml_stream % 10, 'i', 'x'))) {
1640 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1641 GST_FOURCC_ARGS (tag));
1645 avi->offset += 8 + GST_ROUND_UP_2 (size);
1646 /* flush chunk header so we get just the 'size' payload data */
1647 gst_adapter_flush (avi->adapter, 8);
1648 buf = gst_adapter_take_buffer (avi->adapter, size);
1650 if (!gst_avi_demux_parse_subindex (avi, &avi->stream[odml_stream], buf))
1653 /* we parsed the index, go to next subindex */
1656 if (avi->odml_subidxs[avi->odml_subidx] == GST_BUFFER_OFFSET_NONE) {
1657 /* we reached the end of the indexes for this stream, move to the next
1658 * stream to handle the first index */
1660 avi->odml_subidx = 0;
1662 if (avi->odml_stream < avi->num_streams) {
1663 /* there are more indexes */
1664 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
1666 /* we're done, get stream stats now */
1667 avi->have_index = gst_avi_demux_do_index_stats (avi);
1673 /* seek to next index */
1674 return perform_seek_to_offset (avi, avi->odml_subidxs[avi->odml_subidx]);
1681 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
1687 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1689 for (n = 0; n < avi->num_streams; n++) {
1690 GstAviStream *stream = &avi->stream[n];
1692 if (stream->indexes == NULL)
1695 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1696 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
1697 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1699 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1700 '0' + stream->num % 10)) &&
1701 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1702 '0' + stream->num % 10, 'i', 'x'))) {
1703 /* Some ODML files (created by god knows what muxer) have a ##ix format
1704 * instead of the 'official' ix##. They are still valid though. */
1705 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1706 GST_FOURCC_ARGS (tag));
1707 gst_buffer_unref (buf);
1711 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1715 g_free (stream->indexes);
1716 stream->indexes = NULL;
1718 /* get stream stats now */
1719 avi->have_index = gst_avi_demux_do_index_stats (avi);
1723 * gst_avi_demux_riff_parse_vprp:
1724 * @element: caller element (used for debugging/error).
1725 * @buf: input data to be used for parsing, stripped from header.
1726 * @vprp: a pointer (returned by this function) to a filled-in vprp
1727 * structure. Caller should free it.
1729 * Parses a video stream´s vprp. This function takes ownership of @buf.
1731 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1732 * should be skipped on error, but it is not fatal.
1735 gst_avi_demux_riff_parse_vprp (GstElement * element,
1736 GstBuffer * buf, gst_riff_vprp ** _vprp)
1738 gst_riff_vprp *vprp;
1741 g_return_val_if_fail (buf != NULL, FALSE);
1742 g_return_val_if_fail (_vprp != NULL, FALSE);
1744 if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1747 vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1749 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1750 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1751 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1752 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1753 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1754 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1755 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1756 vprp->width = GUINT32_FROM_LE (vprp->width);
1757 vprp->height = GUINT32_FROM_LE (vprp->height);
1758 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1762 /* calculate fields based on size */
1763 k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
1765 if (vprp->fields > k) {
1766 GST_WARNING_OBJECT (element,
1767 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1770 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1771 GST_WARNING_OBJECT (element,
1772 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1773 GST_RIFF_VPRP_VIDEO_FIELDS);
1774 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1776 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1777 for (k = 0; k < vprp->fields; k++) {
1778 gst_riff_vprp_video_field_desc *fd;
1780 fd = &vprp->field_info[k];
1781 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1782 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1783 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1784 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1785 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1786 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1787 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1788 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1793 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1794 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1795 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1796 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1797 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1798 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1799 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1800 vprp->aspect & 0xffff);
1801 GST_INFO_OBJECT (element, " width %d", vprp->width);
1802 GST_INFO_OBJECT (element, " height %d", vprp->height);
1803 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1804 for (k = 0; k < vprp->fields; k++) {
1805 gst_riff_vprp_video_field_desc *fd;
1807 fd = &(vprp->field_info[k]);
1808 GST_INFO_OBJECT (element, " field %u description:", k);
1809 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1810 fd->compressed_bm_height);
1811 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1812 fd->compressed_bm_width);
1813 GST_INFO_OBJECT (element, " valid_bm_height %d",
1814 fd->valid_bm_height);
1815 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1816 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1817 fd->valid_bm_x_offset);
1818 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1819 fd->valid_bm_y_offset);
1820 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1821 fd->video_x_t_offset);
1822 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1825 gst_buffer_unref (buf);
1834 GST_ERROR_OBJECT (element,
1835 "Too small vprp (%d available, at least %d needed)",
1836 GST_BUFFER_SIZE (buf),
1837 (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1838 gst_buffer_unref (buf);
1844 gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
1848 GST_DEBUG_OBJECT (avi, "force : %d", force);
1850 for (i = 0; i < avi->num_streams; i++) {
1851 GstAviStream *stream = &avi->stream[i];
1853 if (force || stream->idx_n != 0) {
1854 GST_LOG_OBJECT (avi, "Added pad %s with caps %" GST_PTR_FORMAT,
1855 GST_PAD_NAME (stream->pad), GST_PAD_CAPS (stream->pad));
1856 gst_element_add_pad ((GstElement *) avi, stream->pad);
1857 stream->exposed = TRUE;
1858 if (avi->main_stream == -1)
1859 avi->main_stream = i;
1861 GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
1863 gst_avi_demux_reset_stream (avi, stream);
1869 * gst_avi_demux_parse_stream:
1870 * @avi: calling element (used for debugging/errors).
1871 * @buf: input buffer used to parse the stream.
1873 * Parses all subchunks in a strl chunk (which defines a single
1874 * stream). Discards the buffer after use. This function will
1875 * increment the stream counter internally.
1877 * Returns: whether the stream was identified successfully.
1878 * Errors are not fatal. It does indicate the stream
1882 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1884 GstAviStream *stream;
1885 GstElementClass *klass;
1886 GstPadTemplate *templ;
1887 GstBuffer *sub = NULL;
1890 gchar *codec_name = NULL, *padname = NULL;
1891 const gchar *tag_name;
1892 GstCaps *caps = NULL;
1894 GstElement *element;
1895 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1896 gst_riff_vprp *vprp = NULL;
1898 element = GST_ELEMENT_CAST (avi);
1900 GST_DEBUG_OBJECT (avi, "Parsing stream");
1902 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1903 GST_WARNING_OBJECT (avi,
1904 "maximum no of streams (%d) exceeded, ignoring stream",
1905 GST_AVI_DEMUX_MAX_STREAMS);
1906 gst_buffer_unref (buf);
1907 /* not a fatal error, let's say */
1911 stream = &avi->stream[avi->num_streams];
1913 /* initial settings */
1914 stream->idx_duration = GST_CLOCK_TIME_NONE;
1915 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1916 stream->duration = GST_CLOCK_TIME_NONE;
1918 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1919 /* sub can be NULL if the chunk is empty */
1921 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1922 GST_FOURCC_ARGS (tag));
1926 case GST_RIFF_TAG_strh:
1928 gst_riff_strh *strh;
1931 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1934 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1935 /* ownership given away */
1937 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1941 strh = stream->strh;
1942 /* sanity check; stream header frame rate matches global header
1944 if (stream->strh->type == GST_RIFF_FCC_vids) {
1946 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1948 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1949 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1950 "frame duration = %d ms", strh->rate, strh->scale,
1951 (gint) (s_dur / GST_MSECOND));
1952 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1953 strh->rate = GST_SECOND / GST_USECOND;
1954 strh->scale = h_dur / GST_USECOND;
1955 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1956 strh->rate, strh->scale);
1959 /* determine duration as indicated by header */
1960 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1961 strh->scale, GST_SECOND, (guint64) strh->rate);
1962 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1963 GST_TIME_ARGS (stream->hdr_duration));
1964 if (stream->hdr_duration == 0)
1965 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1970 case GST_RIFF_TAG_strf:
1972 gboolean res = FALSE;
1975 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
1979 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
1982 switch (stream->strh->type) {
1983 case GST_RIFF_FCC_vids:
1984 stream->is_vbr = TRUE;
1985 res = gst_riff_parse_strf_vids (element, sub,
1986 &stream->strf.vids, &stream->extradata);
1988 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
1990 case GST_RIFF_FCC_auds:
1992 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
1993 &stream->extradata);
1994 stream->is_vbr = (stream->strh->samplesize == 0)
1995 && stream->strh->scale > 1
1996 && stream->strf.auds->blockalign != 1;
1998 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
1999 stream->is_vbr, res);
2000 /* we need these or we have no way to come up with timestamps */
2001 if ((!stream->is_vbr && !stream->strf.auds->av_bps) ||
2002 (stream->is_vbr && (!stream->strh->scale ||
2003 !stream->strh->rate))) {
2004 GST_WARNING_OBJECT (element,
2005 "invalid audio header, ignoring stream");
2008 /* some more sanity checks */
2009 if (stream->is_vbr) {
2010 if (stream->strf.auds->blockalign <= 4) {
2011 /* that would mean (too) many frames per chunk,
2012 * so not likely set as expected */
2013 GST_DEBUG_OBJECT (element,
2014 "suspicious blockalign %d for VBR audio; "
2015 "overriding to 1 frame per chunk",
2016 stream->strf.auds->blockalign);
2017 /* this should top any likely value */
2018 stream->strf.auds->blockalign = (1 << 12);
2022 case GST_RIFF_FCC_iavs:
2023 stream->is_vbr = TRUE;
2024 res = gst_riff_parse_strf_iavs (element, sub,
2025 &stream->strf.iavs, &stream->extradata);
2027 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
2029 case GST_RIFF_FCC_txts:
2030 /* nothing to parse here */
2031 stream->is_vbr = (stream->strh->samplesize == 0)
2032 && (stream->strh->scale > 1);
2036 GST_ERROR_OBJECT (avi,
2037 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
2038 GST_FOURCC_ARGS (stream->strh->type));
2042 gst_buffer_unref (sub);
2050 case GST_RIFF_TAG_vprp:
2053 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
2057 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
2061 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
2065 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
2066 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
2067 /* not considered fatal */
2075 case GST_RIFF_TAG_strd:
2076 if (stream->initdata)
2077 gst_buffer_unref (stream->initdata);
2078 stream->initdata = sub;
2081 case GST_RIFF_TAG_strn:
2082 g_free (stream->name);
2085 g_strndup ((gchar *) GST_BUFFER_DATA (sub),
2086 (gsize) GST_BUFFER_SIZE (sub));
2087 gst_buffer_unref (sub);
2090 stream->name = g_strdup ("");
2092 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
2095 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
2096 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
2097 '0' + avi->num_streams % 10)) {
2098 g_free (stream->indexes);
2099 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
2100 stream->superindex = TRUE;
2104 GST_WARNING_OBJECT (avi,
2105 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
2106 GST_FOURCC_ARGS (tag));
2108 case GST_RIFF_TAG_JUNQ:
2109 case GST_RIFF_TAG_JUNK:
2113 gst_buffer_unref (sub);
2119 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
2124 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
2128 /* get class to figure out the template */
2129 klass = GST_ELEMENT_GET_CLASS (avi);
2131 /* we now have all info, let´s set up a pad and a caps and be done */
2132 /* create stream name + pad */
2133 switch (stream->strh->type) {
2134 case GST_RIFF_FCC_vids:{
2137 fourcc = (stream->strf.vids->compression) ?
2138 stream->strf.vids->compression : stream->strh->fcc_handler;
2139 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
2140 templ = gst_element_class_get_pad_template (klass, "video_%02d");
2141 caps = gst_riff_create_video_caps (fourcc, stream->strh,
2142 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
2144 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2145 GST_TYPE_FOURCC, fourcc, NULL);
2146 } else if (got_vprp && vprp) {
2147 guint32 aspect_n, aspect_d;
2150 aspect_n = vprp->aspect >> 16;
2151 aspect_d = vprp->aspect & 0xffff;
2152 /* calculate the pixel aspect ratio using w/h and aspect ratio */
2153 n = aspect_n * stream->strf.vids->height;
2154 d = aspect_d * stream->strf.vids->width;
2156 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
2158 /* very local, not needed elsewhere */
2162 tag_name = GST_TAG_VIDEO_CODEC;
2163 avi->num_v_streams++;
2166 case GST_RIFF_FCC_auds:{
2167 padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
2168 templ = gst_element_class_get_pad_template (klass, "audio_%02d");
2169 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
2170 stream->strh, stream->strf.auds, stream->extradata,
2171 stream->initdata, &codec_name);
2173 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
2174 G_TYPE_INT, stream->strf.auds->format, NULL);
2176 tag_name = GST_TAG_AUDIO_CODEC;
2177 avi->num_a_streams++;
2180 case GST_RIFF_FCC_iavs:{
2181 guint32 fourcc = stream->strh->fcc_handler;
2183 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
2184 templ = gst_element_class_get_pad_template (klass, "video_%02d");
2185 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
2186 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
2188 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2189 GST_TYPE_FOURCC, fourcc, NULL);
2191 tag_name = GST_TAG_VIDEO_CODEC;
2192 avi->num_v_streams++;
2195 case GST_RIFF_FCC_txts:{
2196 padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
2197 templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
2198 caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
2200 avi->num_t_streams++;
2204 g_assert_not_reached ();
2207 /* no caps means no stream */
2209 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
2213 GST_DEBUG_OBJECT (element, "codec-name=%s",
2214 (codec_name ? codec_name : "NULL"));
2215 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
2217 /* set proper settings and add it */
2219 gst_object_unref (stream->pad);
2220 pad = stream->pad = gst_pad_new_from_template (templ, padname);
2223 gst_pad_use_fixed_caps (pad);
2225 gst_pad_set_formats_function (pad,
2226 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
2227 gst_pad_set_event_mask_function (pad,
2228 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
2230 gst_pad_set_event_function (pad,
2231 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
2232 gst_pad_set_query_type_function (pad,
2233 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
2234 gst_pad_set_query_function (pad,
2235 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
2237 gst_pad_set_convert_function (pad,
2238 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
2241 if (avi->element_index)
2242 gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (stream->pad),
2245 stream->num = avi->num_streams;
2247 stream->start_entry = 0;
2248 stream->step_entry = 0;
2249 stream->stop_entry = 0;
2251 stream->current_entry = -1;
2252 stream->current_total = 0;
2254 stream->last_flow = GST_FLOW_OK;
2255 stream->discont = TRUE;
2257 stream->total_bytes = 0;
2258 stream->total_blocks = 0;
2259 stream->n_keyframes = 0;
2262 stream->idx_max = 0;
2264 gst_pad_set_element_private (pad, stream);
2267 gst_pad_set_caps (pad, caps);
2268 gst_pad_set_active (pad, TRUE);
2269 gst_caps_unref (caps);
2273 if (!stream->taglist)
2274 stream->taglist = gst_tag_list_new ();
2276 avi->got_tags = TRUE;
2278 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
2280 g_free (codec_name);
2283 gst_buffer_unref (buf);
2290 /* unref any mem that may be in use */
2292 gst_buffer_unref (buf);
2294 gst_buffer_unref (sub);
2296 g_free (codec_name);
2297 gst_avi_demux_reset_stream (avi, stream);
2304 * gst_avi_demux_parse_odml:
2305 * @avi: calling element (used for debug/error).
2306 * @buf: input buffer to be used for parsing.
2308 * Read an openDML-2.0 extension header. Fills in the frame number
2309 * in the avi demuxer object when reading succeeds.
2312 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
2316 GstBuffer *sub = NULL;
2318 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2321 case GST_RIFF_TAG_dmlh:{
2322 gst_riff_dmlh dmlh, *_dmlh;
2325 /* sub == NULL is possible and means an empty buffer */
2326 size = sub ? GST_BUFFER_SIZE (sub) : 0;
2329 if (size < sizeof (gst_riff_dmlh)) {
2330 GST_ERROR_OBJECT (avi,
2331 "DMLH entry is too small (%d bytes, %d needed)",
2332 size, (int) sizeof (gst_riff_dmlh));
2335 _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
2336 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
2338 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
2341 avi->avih->tot_frames = dmlh.totalframes;
2346 GST_WARNING_OBJECT (avi,
2347 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
2348 GST_FOURCC_ARGS (tag));
2350 case GST_RIFF_TAG_JUNQ:
2351 case GST_RIFF_TAG_JUNK:
2353 /* skip and move to next chunk */
2355 gst_buffer_unref (sub);
2362 gst_buffer_unref (buf);
2367 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
2369 return stream->idx_n - 1;
2372 /* find a previous entry in the index with the given flags */
2374 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
2375 guint last, gboolean keyframe)
2377 GstAviIndexEntry *entry;
2380 for (i = last; i > 0; i--) {
2381 entry = &stream->index[i - 1];
2382 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2390 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
2391 guint last, gboolean keyframe)
2393 GstAviIndexEntry *entry;
2396 for (i = last + 1; i < stream->idx_n; i++) {
2397 entry = &stream->index[i];
2398 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2402 return stream->idx_n - 1;
2406 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
2408 if (entry->total < *total)
2410 else if (entry->total > *total)
2416 * gst_avi_demux_index_for_time:
2418 * @stream: the stream
2419 * @time: a time position
2421 * Finds the index entry which time is less or equal than the requested time.
2422 * Try to avoid binary search when we can convert the time to an index
2423 * position directly (for example for video frames with a fixed duration).
2425 * Returns: the found position in the index.
2428 gst_avi_demux_index_for_time (GstAviDemux * avi,
2429 GstAviStream * stream, guint64 time)
2434 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
2436 /* easy (and common) cases */
2437 if (time == 0 || stream->idx_n == 0)
2439 if (time >= stream->idx_duration)
2440 return stream->idx_n - 1;
2442 /* figure out where we need to go. For that we convert the time to an
2443 * index entry or we convert it to a total and then do a binary search. */
2444 if (stream->is_vbr) {
2445 /* VBR stream next timestamp */
2446 if (stream->strh->type == GST_RIFF_FCC_auds) {
2447 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
2449 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
2452 /* constant rate stream */
2453 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
2457 GstAviIndexEntry *entry;
2459 /* no index, find index with binary search on total */
2460 GST_LOG_OBJECT (avi, "binary search for entry with total %"
2461 G_GUINT64_FORMAT, total);
2463 entry = gst_util_array_binary_search (stream->index,
2464 stream->idx_n, sizeof (GstAviIndexEntry),
2465 (GCompareDataFunc) gst_avi_demux_index_entry_search,
2466 GST_SEARCH_MODE_BEFORE, &total, NULL);
2468 if (entry == NULL) {
2469 GST_LOG_OBJECT (avi, "not found, assume index 0");
2472 index = entry - stream->index;
2473 GST_LOG_OBJECT (avi, "found at %u", index);
2476 GST_LOG_OBJECT (avi, "converted time to index %u", index);
2482 static inline GstAviStream *
2483 gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
2486 GstAviStream *stream;
2488 /* get the stream for this entry */
2489 stream_nr = CHUNKID_TO_STREAMNR (id);
2490 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2491 GST_WARNING_OBJECT (avi, "invalid stream nr %d", stream_nr);
2494 stream = &avi->stream[stream_nr];
2495 if (G_UNLIKELY (!stream->strh)) {
2496 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2503 * gst_avi_demux_parse_index:
2504 * @avi: calling element (used for debugging/errors).
2505 * @buf: buffer containing the full index.
2507 * Read index entries from the provided buffer.
2508 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2511 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2517 gst_riff_index_entry *index;
2519 GstAviStream *stream;
2520 GstAviIndexEntry entry;
2526 data = GST_BUFFER_DATA (buf);
2527 size = GST_BUFFER_SIZE (buf);
2529 stamp = gst_util_get_timestamp ();
2531 /* see how many items in the index */
2532 num = size / sizeof (gst_riff_index_entry);
2536 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2538 index = (gst_riff_index_entry *) data;
2539 pos_before = avi->offset;
2541 /* figure out if the index is 0 based or relative to the MOVI start */
2542 entry.offset = GST_READ_UINT32_LE (&index[0].offset);
2543 if (entry.offset < avi->offset) {
2544 avi->index_offset = avi->offset + 8;
2545 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2547 avi->index_offset = 0;
2548 GST_DEBUG ("index is 0 based");
2551 for (i = 0, n = 0; i < num; i++) {
2552 id = GST_READ_UINT32_LE (&index[i].id);
2553 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2555 /* some sanity checks */
2556 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2557 (entry.offset == 0 && n > 0)))
2560 /* get the stream for this entry */
2561 stream = gst_avi_demux_stream_for_id (avi, id);
2562 if (G_UNLIKELY (!stream))
2565 /* handle offset and size */
2566 entry.offset += avi->index_offset + 8;
2567 entry.size = GST_READ_UINT32_LE (&index[i].size);
2570 if (stream->strh->type == GST_RIFF_FCC_auds) {
2571 /* all audio frames are keyframes */
2572 ENTRY_SET_KEYFRAME (&entry);
2575 /* else read flags */
2576 flags = GST_READ_UINT32_LE (&index[i].flags);
2577 if (flags & GST_RIFF_IF_KEYFRAME) {
2578 ENTRY_SET_KEYFRAME (&entry);
2580 ENTRY_UNSET_KEYFRAME (&entry);
2585 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2590 gst_buffer_unref (buf);
2592 /* get stream stats now */
2593 avi->have_index = gst_avi_demux_do_index_stats (avi);
2595 stamp = gst_util_get_timestamp () - stamp;
2596 GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT,
2597 GST_TIME_ARGS (stamp));
2604 GST_DEBUG_OBJECT (avi, "empty index");
2605 gst_buffer_unref (buf);
2610 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2611 ("Cannot allocate memory for %u*%u=%u bytes",
2612 (guint) sizeof (GstAviIndexEntry), num,
2613 (guint) sizeof (GstAviIndexEntry) * num));
2614 gst_buffer_unref (buf);
2620 * gst_avi_demux_stream_index:
2621 * @avi: avi demuxer object.
2623 * Seeks to index and reads it.
2626 gst_avi_demux_stream_index (GstAviDemux * avi)
2629 guint64 offset = avi->offset;
2634 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2636 /* get chunk information */
2637 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2638 if (res != GST_FLOW_OK)
2640 else if (GST_BUFFER_SIZE (buf) < 8)
2643 /* check tag first before blindy trying to read 'size' bytes */
2644 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2645 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2646 if (tag == GST_RIFF_TAG_LIST) {
2647 /* this is the movi tag */
2648 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2649 (8 + GST_ROUND_UP_2 (size)));
2650 offset += 8 + GST_ROUND_UP_2 (size);
2651 gst_buffer_unref (buf);
2652 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2653 if (res != GST_FLOW_OK)
2655 else if (GST_BUFFER_SIZE (buf) < 8)
2657 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2658 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2661 if (tag != GST_RIFF_TAG_idx1)
2666 gst_buffer_unref (buf);
2668 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2670 /* read chunk, advance offset */
2671 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2672 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2675 GST_DEBUG ("will parse index chunk size %u for tag %"
2676 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2678 gst_avi_demux_parse_index (avi, buf);
2680 #ifndef GST_DISABLE_GST_DEBUG
2681 /* debug our indexes */
2684 GstAviStream *stream;
2686 for (i = 0; i < avi->num_streams; i++) {
2687 stream = &avi->stream[i];
2688 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2689 i, stream->idx_n, stream->total_bytes);
2698 GST_DEBUG_OBJECT (avi,
2699 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2704 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2705 gst_buffer_unref (buf);
2710 GST_WARNING_OBJECT (avi,
2711 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2712 GST_FOURCC_ARGS (tag));
2713 gst_buffer_unref (buf);
2718 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2719 gst_buffer_unref (buf);
2725 * gst_avi_demux_stream_index_push:
2726 * @avi: avi demuxer object.
2731 gst_avi_demux_stream_index_push (GstAviDemux * avi)
2733 guint64 offset = avi->idx1_offset;
2738 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2740 /* get chunk information */
2741 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
2744 /* check tag first before blindly trying to read 'size' bytes */
2745 if (tag == GST_RIFF_TAG_LIST) {
2746 /* this is the movi tag */
2747 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2748 (8 + GST_ROUND_UP_2 (size)));
2749 avi->idx1_offset = offset + 8 + GST_ROUND_UP_2 (size);
2750 /* issue seek to allow chain function to handle it and return! */
2751 perform_seek_to_offset (avi, avi->idx1_offset);
2755 if (tag != GST_RIFF_TAG_idx1)
2758 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2760 /* flush chunk header */
2761 gst_adapter_flush (avi->adapter, 8);
2762 /* read chunk payload */
2763 buf = gst_adapter_take_buffer (avi->adapter, size);
2766 /* advance offset */
2767 offset += 8 + GST_ROUND_UP_2 (size);
2769 GST_DEBUG ("will parse index chunk size %u for tag %"
2770 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2772 avi->offset = avi->first_movi_offset - 8;
2773 gst_avi_demux_parse_index (avi, buf);
2775 #ifndef GST_DISABLE_GST_DEBUG
2776 /* debug our indexes */
2779 GstAviStream *stream;
2781 for (i = 0; i < avi->num_streams; i++) {
2782 stream = &avi->stream[i];
2783 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2784 i, stream->idx_n, stream->total_bytes);
2793 GST_DEBUG_OBJECT (avi,
2794 "taking data from adapter failed: pos=%" G_GUINT64_FORMAT " size=%u",
2800 GST_WARNING_OBJECT (avi,
2801 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2802 GST_FOURCC_ARGS (tag));
2808 * gst_avi_demux_peek_tag:
2810 * Returns the tag and size of the next chunk
2812 static GstFlowReturn
2813 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2816 GstFlowReturn res = GST_FLOW_OK;
2817 GstBuffer *buf = NULL;
2821 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2822 if (res != GST_FLOW_OK)
2825 bufsize = GST_BUFFER_SIZE (buf);
2829 bufdata = GST_BUFFER_DATA (buf);
2831 *tag = GST_READ_UINT32_LE (bufdata);
2832 *size = GST_READ_UINT32_LE (bufdata + 4);
2834 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2835 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2836 *size, offset + 8, offset + 8 + (gint64) * size);
2839 gst_buffer_unref (buf);
2846 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2851 GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
2852 res = GST_FLOW_ERROR;
2858 * gst_avi_demux_next_data_buffer:
2860 * Returns the offset and size of the next buffer
2861 * Position is the position of the buffer (after tag and size)
2863 static GstFlowReturn
2864 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2865 guint32 * tag, guint * size)
2867 guint64 off = *offset;
2872 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2873 if (res != GST_FLOW_OK)
2875 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2876 off += 8 + 4; /* skip tag + size + subtag */
2888 * gst_avi_demux_stream_scan:
2889 * @avi: calling element (used for debugging/errors).
2891 * Scan the file for all chunks to "create" a new index.
2895 gst_avi_demux_stream_scan (GstAviDemux * avi)
2898 GstAviStream *stream;
2907 * - implement non-seekable source support.
2909 GST_DEBUG_OBJECT (avi, "Creating index");
2911 /* get the size of the file */
2912 format = GST_FORMAT_BYTES;
2913 if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
2917 /* guess the total amount of entries we expect */
2921 GstAviIndexEntry entry;
2924 /* start reading data buffers to find the id and offset */
2925 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2926 if (G_UNLIKELY (res != GST_FLOW_OK))
2930 stream = gst_avi_demux_stream_for_id (avi, tag);
2931 if (G_UNLIKELY (!stream))
2934 /* we can't figure out the keyframes, assume they all are */
2935 entry.flags = GST_AVI_KEYFRAME;
2939 /* and add to the index of this stream */
2940 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2944 /* update position */
2945 pos += GST_ROUND_UP_2 (size);
2946 if (G_UNLIKELY (pos > length)) {
2947 GST_WARNING_OBJECT (avi,
2948 "Stopping index lookup since we are further than EOF");
2954 avi->have_index = gst_avi_demux_do_index_stats (avi);
2961 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2962 ("Cannot allocate memory for %u*%u=%u bytes",
2963 (guint) sizeof (GstAviIndexEntry), num,
2964 (guint) sizeof (GstAviIndexEntry) * num));
2970 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
2974 GstAviStream *stream;
2976 total = GST_CLOCK_TIME_NONE;
2978 /* all streams start at a timestamp 0 */
2979 for (i = 0; i < avi->num_streams; i++) {
2980 GstClockTime duration, hduration;
2981 gst_riff_strh *strh;
2983 stream = &avi->stream[i];
2984 if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh)))
2987 /* get header duration for the stream */
2988 hduration = stream->hdr_duration;
2989 /* index duration calculated during parsing */
2990 duration = stream->idx_duration;
2992 /* now pick a good duration */
2993 if (GST_CLOCK_TIME_IS_VALID (duration)) {
2994 /* index gave valid duration, use that */
2995 GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT,
2996 stream, GST_TIME_ARGS (duration));
2998 /* fall back to header info to calculate a duration */
2999 duration = hduration;
3001 GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT,
3002 i, GST_TIME_ARGS (duration));
3003 /* set duration for the stream */
3004 stream->duration = duration;
3006 /* find total duration */
3007 if (total == GST_CLOCK_TIME_NONE ||
3008 (GST_CLOCK_TIME_IS_VALID (duration) && duration > total))
3012 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
3013 /* now update the duration for those streams where we had none */
3014 for (i = 0; i < avi->num_streams; i++) {
3015 stream = &avi->stream[i];
3017 if (!GST_CLOCK_TIME_IS_VALID (stream->duration)
3018 || stream->duration == 0) {
3019 stream->duration = total;
3021 GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT,
3022 stream, GST_TIME_ARGS (total));
3027 /* and set the total duration in the segment. */
3028 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
3029 GST_TIME_ARGS (total));
3031 gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
3034 /* returns FALSE if there are no pads to deliver event to,
3035 * otherwise TRUE (whatever the outcome of event sending),
3036 * takes ownership of the event. */
3038 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
3040 gboolean result = FALSE;
3043 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
3044 GST_EVENT_TYPE_NAME (event), avi->num_streams);
3046 for (i = 0; i < avi->num_streams; i++) {
3047 GstAviStream *stream = &avi->stream[i];
3051 gst_pad_push_event (stream->pad, gst_event_ref (event));
3054 gst_event_unref (event);
3059 gst_avi_demux_check_seekability (GstAviDemux * avi)
3062 gboolean seekable = FALSE;
3063 gint64 start = -1, stop = -1;
3065 query = gst_query_new_seeking (GST_FORMAT_BYTES);
3066 if (!gst_pad_peer_query (avi->sinkpad, query)) {
3067 GST_DEBUG_OBJECT (avi, "seeking query failed");
3071 gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
3073 /* try harder to query upstream size if we didn't get it the first time */
3074 if (seekable && stop == -1) {
3075 GstFormat fmt = GST_FORMAT_BYTES;
3077 GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
3078 gst_pad_query_peer_duration (avi->sinkpad, &fmt, &stop);
3081 /* if upstream doesn't know the size, it's likely that it's not seekable in
3082 * practice even if it technically may be seekable */
3083 if (seekable && (start != 0 || stop <= start)) {
3084 GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
3089 GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
3090 G_GUINT64_FORMAT ")", seekable, start, stop);
3091 avi->seekable = seekable;
3093 gst_query_unref (query);
3097 * Read AVI headers when streaming
3099 static GstFlowReturn
3100 gst_avi_demux_stream_header_push (GstAviDemux * avi)
3102 GstFlowReturn ret = GST_FLOW_OK;
3107 GstBuffer *buf = NULL, *sub = NULL;
3111 GstTagList *tags = NULL;
3113 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
3115 switch (avi->header_state) {
3116 case GST_AVI_DEMUX_HEADER_TAG_LIST:
3117 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3118 avi->offset += 8 + GST_ROUND_UP_2 (size);
3119 if (tag != GST_RIFF_TAG_LIST)
3120 goto header_no_list;
3122 gst_adapter_flush (avi->adapter, 8);
3123 /* Find the 'hdrl' LIST tag */
3124 GST_DEBUG ("Reading %d bytes", size);
3125 buf = gst_adapter_take_buffer (avi->adapter, size);
3127 if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
3128 goto header_no_hdrl;
3132 gst_adapter_flush (avi->adapter, 1);
3134 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
3136 /* the hdrl starts with a 'avih' header */
3137 if (!gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3139 goto header_no_avih;
3141 if (tag != GST_RIFF_TAG_avih)
3142 goto header_no_avih;
3144 if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3145 goto header_wrong_avih;
3147 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
3149 /* now, read the elements from the header until the end */
3150 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3152 /* sub can be NULL on empty tags */
3157 case GST_RIFF_TAG_LIST:
3158 if (GST_BUFFER_SIZE (sub) < 4)
3161 switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
3162 case GST_RIFF_LIST_strl:
3163 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3165 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3166 ("failed to parse stream, ignoring"));
3171 case GST_RIFF_LIST_odml:
3172 gst_avi_demux_parse_odml (avi, sub);
3176 GST_WARNING_OBJECT (avi,
3177 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3178 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
3181 case GST_RIFF_TAG_JUNQ:
3182 case GST_RIFF_TAG_JUNK:
3187 gst_avi_demux_parse_idit (avi, sub);
3190 GST_WARNING_OBJECT (avi,
3191 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
3192 offset, GST_FOURCC_ARGS (tag));
3194 case GST_RIFF_TAG_JUNQ:
3195 case GST_RIFF_TAG_JUNK:
3197 /* move to next chunk */
3199 gst_buffer_unref (sub);
3204 gst_buffer_unref (buf);
3205 GST_DEBUG ("elements parsed");
3207 /* check parsed streams */
3208 if (avi->num_streams == 0) {
3210 } else if (avi->num_streams != avi->avih->streams) {
3211 GST_WARNING_OBJECT (avi,
3212 "Stream header mentioned %d streams, but %d available",
3213 avi->avih->streams, avi->num_streams);
3215 GST_DEBUG ("Get junk and info next");
3216 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
3218 /* Need more data */
3222 case GST_AVI_DEMUX_HEADER_INFO:
3223 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
3225 if (gst_adapter_available (avi->adapter) < 12)
3228 data = gst_adapter_peek (avi->adapter, 12);
3229 tag = GST_READ_UINT32_LE (data);
3230 size = GST_READ_UINT32_LE (data + 4);
3231 ltag = GST_READ_UINT32_LE (data + 8);
3233 if (tag == GST_RIFF_TAG_LIST) {
3235 case GST_RIFF_LIST_movi:
3236 gst_adapter_flush (avi->adapter, 12);
3237 if (!avi->first_movi_offset)
3238 avi->first_movi_offset = avi->offset;
3240 avi->idx1_offset = avi->offset + size - 4;
3242 case GST_RIFF_LIST_INFO:
3243 GST_DEBUG ("Found INFO chunk");
3244 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3245 GST_DEBUG ("got size %d", size);
3247 gst_adapter_flush (avi->adapter, 12);
3249 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
3252 gst_adapter_flush (avi->adapter, 1);
3253 gst_riff_parse_info (GST_ELEMENT_CAST (avi), buf, &tags);
3255 if (avi->globaltags) {
3256 gst_tag_list_insert (avi->globaltags, tags,
3257 GST_TAG_MERGE_REPLACE);
3259 avi->globaltags = tags;
3263 gst_buffer_unref (buf);
3265 avi->offset += GST_ROUND_UP_2 (size) - 4;
3267 GST_DEBUG ("skipping INFO LIST prefix");
3270 /* Need more data */
3275 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3276 avi->offset += 8 + GST_ROUND_UP_2 (size);
3277 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3278 // ??? goto iterate; ???
3280 /* Need more data */
3286 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3287 avi->offset += 8 + GST_ROUND_UP_2 (size);
3288 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3291 /* Need more data */
3298 GST_WARNING ("unhandled header state: %d", avi->header_state);
3303 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3304 avi->num_streams, avi->stream[0].indexes);
3306 GST_DEBUG ("Found movi chunk. Starting to stream data");
3307 avi->state = GST_AVI_DEMUX_MOVI;
3309 /* no indexes in push mode, but it still sets some variables */
3310 gst_avi_demux_calculate_durations_from_index (avi);
3312 gst_avi_demux_expose_streams (avi, TRUE);
3314 /* prepare all streams for index 0 */
3315 for (i = 0; i < avi->num_streams; i++)
3316 avi->stream[i].current_entry = 0;
3318 /* create initial NEWSEGMENT event */
3319 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3320 stop = avi->segment.duration;
3322 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3325 gst_event_unref (avi->seg_event);
3326 avi->seg_event = gst_event_new_new_segment_full
3327 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3328 avi->segment.start, stop, avi->segment.time);
3330 gst_avi_demux_check_seekability (avi);
3332 /* at this point we know all the streams and we can signal the no more
3334 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3335 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3342 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3343 return GST_FLOW_ERROR;
3347 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3348 ("Invalid AVI header (no LIST at start): %"
3349 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3350 return GST_FLOW_ERROR;
3354 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3355 ("Invalid AVI header (no hdrl at start): %"
3356 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3357 gst_buffer_unref (buf);
3358 return GST_FLOW_ERROR;
3362 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3363 ("Invalid AVI header (no avih at start): %"
3364 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3366 gst_buffer_unref (sub);
3368 gst_buffer_unref (buf);
3369 return GST_FLOW_ERROR;
3373 gst_buffer_unref (buf);
3374 return GST_FLOW_ERROR;
3379 gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d)
3382 date = g_date_new_dmy (d, m, y);
3383 if (!g_date_valid (date)) {
3385 GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
3390 if (avi->globaltags == NULL)
3391 avi->globaltags = gst_tag_list_new ();
3393 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
3399 gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data)
3404 ret = sscanf (data, "%d:%d:%d", &y, &m, &d);
3406 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3409 gst_avi_demux_add_date_tag (avi, y, m, d);
3413 get_month_num (gchar * data, guint size)
3415 if (g_ascii_strncasecmp (data, "jan", 3) == 0) {
3417 } else if (g_ascii_strncasecmp (data, "feb", 3) == 0) {
3419 } else if (g_ascii_strncasecmp (data, "mar", 3) == 0) {
3421 } else if (g_ascii_strncasecmp (data, "apr", 3) == 0) {
3423 } else if (g_ascii_strncasecmp (data, "may", 3) == 0) {
3425 } else if (g_ascii_strncasecmp (data, "jun", 3) == 0) {
3427 } else if (g_ascii_strncasecmp (data, "jul", 3) == 0) {
3429 } else if (g_ascii_strncasecmp (data, "aug", 3) == 0) {
3431 } else if (g_ascii_strncasecmp (data, "sep", 3) == 0) {
3433 } else if (g_ascii_strncasecmp (data, "oct", 3) == 0) {
3435 } else if (g_ascii_strncasecmp (data, "nov", 3) == 0) {
3437 } else if (g_ascii_strncasecmp (data, "dec", 3) == 0) {
3445 gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data)
3447 gint year, month, day;
3448 gint hour, min, sec;
3453 ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour,
3456 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3459 month = get_month_num (monthstr, strlen (monthstr));
3460 gst_avi_demux_add_date_tag (avi, year, month, day);
3464 gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
3466 gchar *data = (gchar *) GST_BUFFER_DATA (buf);
3467 guint size = GST_BUFFER_SIZE (buf);
3468 gchar *safedata = NULL;
3472 * http://www.eden-foundation.org/products/code/film_date_stamp/index.html
3474 * This tag could be in one of the below formats
3475 * 2005:08:17 11:42:43
3476 * THU OCT 26 16:46:04 2006
3477 * Mon Mar 3 09:44:56 2008
3479 * FIXME: Our date tag doesn't include hours
3482 /* skip eventual initial whitespace */
3483 while (size > 0 && g_ascii_isspace (data[0])) {
3492 /* make a safe copy to add a \0 to the end of the string */
3493 safedata = g_strndup (data, size);
3495 /* test if the first char is a alpha or a number */
3496 if (g_ascii_isdigit (data[0])) {
3497 gst_avi_demux_parse_idit_nums_only (avi, safedata);
3500 } else if (g_ascii_isalpha (data[0])) {
3501 gst_avi_demux_parse_idit_text (avi, safedata);
3509 GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
3513 * Read full AVI headers.
3515 static GstFlowReturn
3516 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3519 GstBuffer *buf, *sub = NULL;
3523 GstElement *element = GST_ELEMENT_CAST (avi);
3525 GstTagList *tags = NULL;
3527 stamp = gst_util_get_timestamp ();
3529 /* the header consists of a 'hdrl' LIST tag */
3530 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3531 if (res != GST_FLOW_OK)
3532 goto pull_range_failed;
3533 else if (tag != GST_RIFF_TAG_LIST)
3535 else if (GST_BUFFER_SIZE (buf) < 4)
3538 GST_DEBUG_OBJECT (avi, "parsing headers");
3540 /* Find the 'hdrl' LIST tag */
3541 while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
3542 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3543 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
3546 gst_buffer_unref (buf);
3548 /* read new chunk */
3549 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3550 if (res != GST_FLOW_OK)
3551 goto pull_range_failed;
3552 else if (tag != GST_RIFF_TAG_LIST)
3554 else if (GST_BUFFER_SIZE (buf) < 4)
3558 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3560 /* the hdrl starts with a 'avih' header */
3561 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3563 else if (tag != GST_RIFF_TAG_avih)
3565 else if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3568 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3570 /* now, read the elements from the header until the end */
3571 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3572 /* sub can be NULL on empty tags */
3577 case GST_RIFF_TAG_LIST:
3582 if (GST_BUFFER_SIZE (sub) < 4)
3585 data = GST_BUFFER_DATA (sub);
3586 fourcc = GST_READ_UINT32_LE (data);
3589 case GST_RIFF_LIST_strl:
3590 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3591 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3592 ("failed to parse stream, ignoring"));
3597 case GST_RIFF_LIST_odml:
3598 gst_avi_demux_parse_odml (avi, sub);
3601 case GST_RIFF_LIST_INFO:
3602 GST_BUFFER_DATA (sub) = data + 4;
3603 GST_BUFFER_SIZE (sub) -= 4;
3604 gst_riff_parse_info (element, sub, &tags);
3606 if (avi->globaltags) {
3607 gst_tag_list_insert (avi->globaltags, tags,
3608 GST_TAG_MERGE_REPLACE);
3610 avi->globaltags = tags;
3616 GST_WARNING_OBJECT (avi,
3617 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3618 GST_FOURCC_ARGS (fourcc));
3619 GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
3620 GST_BUFFER_SIZE (sub));
3622 case GST_RIFF_TAG_JUNQ:
3623 case GST_RIFF_TAG_JUNK:
3629 gst_avi_demux_parse_idit (avi, sub);
3632 GST_WARNING_OBJECT (avi,
3633 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3634 GST_FOURCC_ARGS (tag), offset);
3635 GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
3636 GST_BUFFER_SIZE (sub));
3638 case GST_RIFF_TAG_JUNQ:
3639 case GST_RIFF_TAG_JUNK:
3642 gst_buffer_unref (sub);
3647 gst_buffer_unref (buf);
3648 GST_DEBUG ("elements parsed");
3650 /* check parsed streams */
3651 if (avi->num_streams == 0)
3653 else if (avi->num_streams != avi->avih->streams) {
3654 GST_WARNING_OBJECT (avi,
3655 "Stream header mentioned %d streams, but %d available",
3656 avi->avih->streams, avi->num_streams);
3659 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3660 G_GUINT64_FORMAT, avi->offset);
3662 /* Now, find the data (i.e. skip all junk between header and data) */
3668 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3669 if (res != GST_FLOW_OK) {
3670 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3671 goto pull_range_failed;
3672 } else if (GST_BUFFER_SIZE (buf) < 12) {
3673 GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
3674 GST_BUFFER_SIZE (buf));
3675 gst_buffer_unref (buf);
3676 return GST_FLOW_ERROR;
3679 data = GST_BUFFER_DATA (buf);
3681 tag = GST_READ_UINT32_LE (data);
3682 size = GST_READ_UINT32_LE (data + 4);
3683 ltag = GST_READ_UINT32_LE (data + 8);
3685 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3686 GST_FOURCC_ARGS (tag), size);
3687 GST_MEMDUMP ("Tag content", data, GST_BUFFER_SIZE (buf));
3688 gst_buffer_unref (buf);
3691 case GST_RIFF_TAG_LIST:{
3693 case GST_RIFF_LIST_movi:
3694 GST_DEBUG_OBJECT (avi,
3695 "Reached the 'movi' tag, we're done with skipping");
3697 case GST_RIFF_LIST_INFO:
3699 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3701 if (res != GST_FLOW_OK) {
3702 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3703 goto pull_range_failed;
3705 GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
3707 GST_DEBUG ("skipping INFO LIST prefix");
3708 avi->offset += (4 - GST_ROUND_UP_2 (size));
3709 gst_buffer_unref (buf);
3713 sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
3714 gst_riff_parse_info (element, sub, &tags);
3716 if (avi->globaltags) {
3717 gst_tag_list_insert (avi->globaltags, tags,
3718 GST_TAG_MERGE_REPLACE);
3720 avi->globaltags = tags;
3725 gst_buffer_unref (sub);
3728 gst_buffer_unref (buf);
3729 /* gst_riff_read_chunk() has already advanced avi->offset */
3732 GST_WARNING_OBJECT (avi,
3733 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3734 GST_FOURCC_ARGS (ltag));
3735 avi->offset += 8 + GST_ROUND_UP_2 (size);
3741 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3742 GST_FOURCC_ARGS (tag));
3744 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3745 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3746 /* Only get buffer for debugging if the memdump is needed */
3747 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
3748 res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf);
3749 if (res != GST_FLOW_OK) {
3750 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3751 goto pull_range_failed;
3753 GST_MEMDUMP ("Junk", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
3754 gst_buffer_unref (buf);
3756 avi->offset += 8 + GST_ROUND_UP_2 (size);
3762 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3763 avi->num_streams, avi->stream[0].indexes);
3765 /* create or read stream index (for seeking) */
3766 if (avi->stream[0].indexes != NULL) {
3767 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3768 gst_avi_demux_read_subindexes_pull (avi);
3770 if (!avi->have_index) {
3771 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
3772 gst_avi_demux_stream_index (avi);
3774 /* still no index, scan */
3775 if (!avi->have_index) {
3776 gst_avi_demux_stream_scan (avi);
3778 /* still no index.. this is a fatal error for now.
3779 * FIXME, we should switch to plain push mode without seeking
3780 * instead of failing. */
3781 if (!avi->have_index)
3785 /* use the indexes now to construct nice durations */
3786 gst_avi_demux_calculate_durations_from_index (avi);
3788 gst_avi_demux_expose_streams (avi, FALSE);
3790 /* create initial NEWSEGMENT event */
3791 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3792 stop = avi->segment.duration;
3794 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3796 /* do initial seek to the default segment values */
3797 gst_avi_demux_do_seek (avi, &avi->segment);
3799 /* prepare initial segment */
3801 gst_event_unref (avi->seg_event);
3802 avi->seg_event = gst_event_new_new_segment_full
3803 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3804 avi->segment.start, stop, avi->segment.time);
3806 stamp = gst_util_get_timestamp () - stamp;
3807 GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT,
3808 GST_TIME_ARGS (stamp));
3810 /* at this point we know all the streams and we can signal the no more
3812 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3813 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3820 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3821 ("Invalid AVI header (no LIST at start): %"
3822 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3823 gst_buffer_unref (buf);
3824 return GST_FLOW_ERROR;
3828 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3829 ("Invalid AVI header (no hdrl at start): %"
3830 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3831 gst_buffer_unref (buf);
3832 return GST_FLOW_ERROR;
3836 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3837 ("Invalid AVI header (no avih at start): %"
3838 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3840 gst_buffer_unref (sub);
3841 gst_buffer_unref (buf);
3842 return GST_FLOW_ERROR;
3846 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3847 ("Invalid AVI header (cannot parse avih at start)"));
3848 gst_buffer_unref (buf);
3849 return GST_FLOW_ERROR;
3853 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3854 return GST_FLOW_ERROR;
3858 GST_WARNING ("file without or too big index");
3859 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3860 ("Could not get/create index"));
3861 return GST_FLOW_ERROR;
3865 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3866 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3867 return GST_FLOW_ERROR;
3871 /* move a stream to @index */
3873 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
3874 GstSegment * segment, guint index)
3876 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
3878 if (segment->rate < 0.0) {
3880 /* Because we don't know the frame order we need to push from the prev keyframe
3881 * to the next keyframe. If there is a smart decoder downstream he will notice
3882 * that there are too many encoded frames send and return UNEXPECTED when there
3883 * are enough decoded frames to fill the segment. */
3884 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
3886 /* FIXME, we go back to 0, we should look at segment.start. We will however
3887 * stop earlier when the see the timestamp < segment.start */
3888 stream->start_entry = 0;
3889 stream->step_entry = index;
3890 stream->current_entry = index;
3891 stream->stop_entry = next_key;
3893 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
3894 stream->start_entry, stream->step_entry, stream->stop_entry);
3896 stream->start_entry = index;
3897 stream->step_entry = index;
3898 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
3900 if (stream->current_entry != index) {
3901 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
3902 stream->current_entry, index);
3903 stream->current_entry = index;
3904 stream->discont = TRUE;
3907 /* update the buffer info */
3908 gst_avi_demux_get_buffer_info (avi, stream, index,
3909 &stream->current_timestamp, &stream->current_ts_end,
3910 &stream->current_offset, &stream->current_offset_end);
3912 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
3913 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3914 ", off_end %" G_GUINT64_FORMAT, index,
3915 GST_TIME_ARGS (stream->current_timestamp),
3916 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3917 stream->current_offset_end);
3919 GST_DEBUG_OBJECT (avi, "Seeking to offset %" G_GUINT64_FORMAT,
3920 stream->index[index].offset);
3924 * Do the actual seeking.
3927 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3929 GstClockTime seek_time;
3932 GstAviStream *stream;
3934 seek_time = segment->last_stop;
3935 keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3937 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
3938 " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
3940 /* FIXME, this code assumes the main stream with keyframes is stream 0,
3941 * which is mostly correct... */
3942 stream = &avi->stream[avi->main_stream];
3944 /* get the entry index for the requested position */
3945 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
3946 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
3948 /* check if we are already on a keyframe */
3949 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
3950 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
3951 /* now go to the previous keyframe, this is where we should start
3953 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
3954 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
3957 /* move the main stream to this position */
3958 gst_avi_demux_move_stream (avi, stream, segment, index);
3961 /* when seeking to a keyframe, we update the result seek time
3962 * to the time of the keyframe. */
3963 seek_time = stream->current_timestamp;
3964 GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
3965 GST_TIME_ARGS (seek_time));
3968 /* the seek time is also the last_stop and stream time when going
3970 segment->last_stop = seek_time;
3971 if (segment->rate > 0.0)
3972 segment->time = seek_time;
3974 /* now set DISCONT and align the other streams */
3975 for (i = 0; i < avi->num_streams; i++) {
3976 GstAviStream *ostream;
3978 ostream = &avi->stream[i];
3979 if ((ostream == stream) || (ostream->index == NULL))
3982 /* get the entry index for the requested position */
3983 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
3985 /* move to previous keyframe */
3986 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
3987 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
3989 gst_avi_demux_move_stream (avi, ostream, segment, index);
3991 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
3992 GST_TIME_ARGS (seek_time));
3998 * Handle seek event in pull mode.
4001 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4006 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4010 GstSegment seeksegment = { 0, };
4014 GST_DEBUG_OBJECT (avi, "doing seek with event");
4016 gst_event_parse_seek (event, &rate, &format, &flags,
4017 &cur_type, &cur, &stop_type, &stop);
4019 /* we have to have a format as the segment format. Try to convert
4021 if (format != GST_FORMAT_TIME) {
4022 GstFormat fmt = GST_FORMAT_TIME;
4023 gboolean res = TRUE;
4025 if (cur_type != GST_SEEK_TYPE_NONE)
4026 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
4027 if (res && stop_type != GST_SEEK_TYPE_NONE)
4028 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
4034 GST_DEBUG_OBJECT (avi,
4035 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
4036 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
4037 /* FIXME: can we do anything with rate!=1.0 */
4039 GST_DEBUG_OBJECT (avi, "doing seek without event");
4044 /* save flush flag */
4045 flush = flags & GST_SEEK_FLAG_FLUSH;
4048 GstEvent *fevent = gst_event_new_flush_start ();
4050 /* for a flushing seek, we send a flush_start on all pads. This will
4051 * eventually stop streaming with a WRONG_STATE. We can thus eventually
4052 * take the STREAM_LOCK. */
4053 GST_DEBUG_OBJECT (avi, "sending flush start");
4054 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4055 gst_pad_push_event (avi->sinkpad, fevent);
4057 /* a non-flushing seek, we PAUSE the task so that we can take the
4059 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
4060 gst_pad_pause_task (avi->sinkpad);
4063 /* wait for streaming to stop */
4064 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
4065 GST_PAD_STREAM_LOCK (avi->sinkpad);
4067 /* copy segment, we need this because we still need the old
4068 * segment when we close the current segment. */
4069 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4072 GST_DEBUG_OBJECT (avi, "configuring seek");
4073 gst_segment_set_seek (&seeksegment, rate, format, flags,
4074 cur_type, cur, stop_type, stop, &update);
4076 /* do the seek, seeksegment.last_stop contains the new position, this
4077 * actually never fails. */
4078 gst_avi_demux_do_seek (avi, &seeksegment);
4081 GstEvent *fevent = gst_event_new_flush_stop ();
4083 GST_DEBUG_OBJECT (avi, "sending flush stop");
4084 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4085 gst_pad_push_event (avi->sinkpad, fevent);
4086 } else if (avi->segment_running) {
4089 /* we are running the current segment and doing a non-flushing seek,
4090 * close the segment first based on the last_stop. */
4091 GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
4092 " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
4093 seg = gst_event_new_new_segment_full (TRUE,
4094 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4095 avi->segment.start, avi->segment.last_stop, avi->segment.time);
4096 gst_avi_demux_push_event (avi, seg);
4099 /* now update the real segment info */
4100 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
4102 /* post the SEGMENT_START message when we do segmented playback */
4103 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4104 gst_element_post_message (GST_ELEMENT_CAST (avi),
4105 gst_message_new_segment_start (GST_OBJECT_CAST (avi),
4106 avi->segment.format, avi->segment.last_stop));
4109 /* prepare for streaming again */
4110 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
4111 stop = avi->segment.duration;
4113 /* queue the segment event for the streaming thread. */
4115 gst_event_unref (avi->seg_event);
4116 if (avi->segment.rate > 0.0) {
4117 /* forwards goes from last_stop to stop */
4118 avi->seg_event = gst_event_new_new_segment_full (FALSE,
4119 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4120 avi->segment.last_stop, stop, avi->segment.time);
4122 /* reverse goes from start to last_stop */
4123 avi->seg_event = gst_event_new_new_segment_full (FALSE,
4124 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
4125 avi->segment.start, avi->segment.last_stop, avi->segment.time);
4128 if (!avi->streaming) {
4129 avi->segment_running = TRUE;
4130 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4133 /* reset the last flow and mark discont, seek is always DISCONT */
4134 for (i = 0; i < avi->num_streams; i++) {
4135 GST_DEBUG_OBJECT (avi, "marking DISCONT");
4136 avi->stream[i].last_flow = GST_FLOW_OK;
4137 avi->stream[i].discont = TRUE;
4139 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
4146 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4152 * Handle seek event in push mode.
4155 avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4160 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4163 GstAviStream *stream;
4167 GstSegment seeksegment;
4170 /* check we have the index */
4171 if (!avi->have_index) {
4172 GST_DEBUG_OBJECT (avi, "no seek index built, seek aborted.");
4175 GST_DEBUG_OBJECT (avi, "doing push-based seek with event");
4178 gst_event_parse_seek (event, &rate, &format, &flags,
4179 &cur_type, &cur, &stop_type, &stop);
4181 if (format != GST_FORMAT_TIME) {
4182 GstFormat fmt = GST_FORMAT_TIME;
4183 gboolean res = TRUE;
4185 if (cur_type != GST_SEEK_TYPE_NONE)
4186 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
4187 if (res && stop_type != GST_SEEK_TYPE_NONE)
4188 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
4190 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4197 /* let gst_segment handle any tricky stuff */
4198 GST_DEBUG_OBJECT (avi, "configuring seek");
4199 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4200 gst_segment_set_seek (&seeksegment, rate, format, flags,
4201 cur_type, cur, stop_type, stop, &update);
4203 keyframe = !!(flags & GST_SEEK_FLAG_KEY_UNIT);
4204 cur = seeksegment.last_stop;
4206 GST_DEBUG_OBJECT (avi,
4207 "Seek requested: ts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
4208 ", kf %u, rate %lf", GST_TIME_ARGS (cur), GST_TIME_ARGS (stop), keyframe,
4212 GST_DEBUG_OBJECT (avi, "negative rate seek not supported in push mode");
4216 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4217 * which is mostly correct... */
4218 str_num = avi->main_stream;
4219 stream = &avi->stream[str_num];
4221 /* get the entry index for the requested position */
4222 index = gst_avi_demux_index_for_time (avi, stream, cur);
4223 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT,
4224 str_num, index, GST_TIME_ARGS (cur));
4226 /* check if we are already on a keyframe */
4227 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4228 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4229 /* now go to the previous keyframe, this is where we should start
4231 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4232 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index);
4235 gst_avi_demux_get_buffer_info (avi, stream, index,
4236 &stream->current_timestamp, &stream->current_ts_end,
4237 &stream->current_offset, &stream->current_offset_end);
4239 /* re-use cur to be the timestamp of the seek as it _will_ be */
4240 cur = stream->current_timestamp;
4242 min_offset = stream->index[index].offset;
4243 avi->seek_kf_offset = min_offset - 8;
4245 GST_DEBUG_OBJECT (avi,
4246 "Seek to: ts %" GST_TIME_FORMAT " (on str %u, idx %u, offset %"
4247 G_GUINT64_FORMAT ")", GST_TIME_ARGS (stream->current_timestamp), str_num,
4250 for (n = 0; n < avi->num_streams; n++) {
4251 GstAviStream *str = &avi->stream[n];
4254 if (n == avi->main_stream)
4257 /* get the entry index for the requested position */
4258 idx = gst_avi_demux_index_for_time (avi, str, cur);
4259 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT, n,
4260 idx, GST_TIME_ARGS (cur));
4262 /* check if we are already on a keyframe */
4263 if (!ENTRY_IS_KEYFRAME (&str->index[idx])) {
4264 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4265 /* now go to the previous keyframe, this is where we should start
4267 idx = gst_avi_demux_index_prev (avi, str, idx, TRUE);
4268 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", idx);
4271 gst_avi_demux_get_buffer_info (avi, str, idx,
4272 &str->current_timestamp, &str->current_ts_end,
4273 &str->current_offset, &str->current_offset_end);
4275 if (str->index[idx].offset < min_offset) {
4276 min_offset = str->index[idx].offset;
4277 GST_DEBUG_OBJECT (avi,
4278 "Found an earlier offset at %" G_GUINT64_FORMAT ", str %u",
4286 GST_DEBUG_OBJECT (avi,
4287 "Seek performed: str %u, offset %" G_GUINT64_FORMAT ", idx %u, ts %"
4288 GST_TIME_FORMAT ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4289 ", off_end %" G_GUINT64_FORMAT, str_num, min_offset, index,
4290 GST_TIME_ARGS (stream->current_timestamp),
4291 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4292 stream->current_offset_end);
4294 /* index data refers to data, not chunk header (for pull mode convenience) */
4296 GST_DEBUG_OBJECT (avi, "seeking to chunk at offset %" G_GUINT64_FORMAT,
4299 if (!perform_seek_to_offset (avi, min_offset)) {
4300 GST_DEBUG_OBJECT (avi, "seek event failed!");
4308 * Handle whether we can perform the seek event or if we have to let the chain
4309 * function handle seeks to build the seek indexes first.
4312 gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
4315 /* check for having parsed index already */
4316 if (!avi->have_index) {
4318 gboolean building_index;
4320 GST_OBJECT_LOCK (avi);
4321 /* handle the seek event in the chain function */
4322 avi->state = GST_AVI_DEMUX_SEEK;
4324 /* copy the event */
4325 if (avi->seek_event)
4326 gst_event_unref (avi->seek_event);
4327 avi->seek_event = gst_event_ref (event);
4329 /* set the building_index flag so that only one thread can setup the
4330 * structures for index seeking. */
4331 building_index = avi->building_index;
4332 if (!building_index) {
4333 avi->building_index = TRUE;
4334 if (avi->stream[0].indexes) {
4335 avi->odml_stream = 0;
4336 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
4337 offset = avi->odml_subidxs[0];
4339 offset = avi->idx1_offset;
4342 GST_OBJECT_UNLOCK (avi);
4344 if (!building_index) {
4345 /* seek to the first subindex or legacy index */
4346 GST_INFO_OBJECT (avi,
4347 "Seeking to legacy index/first subindex at %" G_GUINT64_FORMAT,
4349 return perform_seek_to_offset (avi, offset);
4352 /* FIXME: we have to always return true so that we don't block the seek
4354 * Note: maybe it is OK to return true if we're still building the index */
4358 return avi_demux_handle_seek_push (avi, pad, event);
4362 * Helper for gst_avi_demux_invert()
4365 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
4367 memcpy (tmp, d1, bytes);
4368 memcpy (d1, d2, bytes);
4369 memcpy (d2, tmp, bytes);
4373 #define gst_avi_demux_is_uncompressed(fourcc) \
4374 (fourcc == GST_RIFF_DIB || \
4375 fourcc == GST_RIFF_rgb || \
4376 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
4379 * Invert DIB buffers... Takes existing buffer and
4380 * returns either the buffer or a new one (with old
4381 * one dereferenced).
4382 * FIXME: can't we preallocate tmp? and remember stride, bpp?
4385 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
4392 if (stream->strh->type != GST_RIFF_FCC_vids)
4395 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
4396 return buf; /* Ignore non DIB buffers */
4399 s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
4400 if (!gst_structure_get_int (s, "bpp", &bpp)) {
4401 GST_WARNING ("Failed to retrieve depth from caps");
4405 if (stream->strf.vids == NULL) {
4406 GST_WARNING ("Failed to retrieve vids for stream");
4410 h = stream->strf.vids->height;
4411 w = stream->strf.vids->width;
4412 stride = w * (bpp / 8);
4414 buf = gst_buffer_make_writable (buf);
4415 if (GST_BUFFER_SIZE (buf) < (stride * h)) {
4416 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
4420 tmp = g_malloc (stride);
4422 for (y = 0; y < h / 2; y++) {
4423 swap_line (GST_BUFFER_DATA (buf) + stride * y,
4424 GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
4433 gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
4434 GstClockTime timestamp, guint64 offset, gboolean keyframe)
4436 /* do not add indefinitely for open-ended streaming */
4437 if (G_UNLIKELY (avi->element_index && avi->seekable)) {
4438 GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
4439 G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
4440 gst_index_add_association (avi->element_index, avi->index_id,
4441 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT : GST_ASSOCIATION_FLAG_NONE,
4442 GST_FORMAT_TIME, timestamp, GST_FORMAT_BYTES, offset, NULL);
4443 /* well, current_total determines TIME and entry DEFAULT (frame #) ... */
4444 gst_index_add_association (avi->element_index, stream->index_id,
4445 GST_ASSOCIATION_FLAG_NONE,
4446 GST_FORMAT_TIME, stream->current_total, GST_FORMAT_BYTES, offset,
4447 GST_FORMAT_DEFAULT, stream->current_entry, NULL);
4452 * Returns the aggregated GstFlowReturn.
4454 static GstFlowReturn
4455 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
4459 gboolean unexpected = FALSE, not_linked = TRUE;
4461 /* store the value */
4462 stream->last_flow = ret;
4464 /* any other error that is not-linked or eos can be returned right away */
4465 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4468 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
4469 for (i = 0; i < avi->num_streams; i++) {
4470 GstAviStream *ostream = &avi->stream[i];
4472 ret = ostream->last_flow;
4473 /* no unexpected or unlinked, return */
4474 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4477 /* we check to see if we have at least 1 unexpected or all unlinked */
4478 unexpected |= (ret == GST_FLOW_UNEXPECTED);
4479 not_linked &= (ret == GST_FLOW_NOT_LINKED);
4481 /* when we get here, we all have unlinked or unexpected */
4483 ret = GST_FLOW_NOT_LINKED;
4484 else if (unexpected)
4485 ret = GST_FLOW_UNEXPECTED;
4487 GST_LOG_OBJECT (avi, "combined %s to return %s",
4488 gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret));
4492 /* move @stream to the next position in its index */
4493 static GstFlowReturn
4494 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
4497 guint old_entry, new_entry;
4499 old_entry = stream->current_entry;
4501 new_entry = old_entry + 1;
4503 /* see if we reached the end */
4504 if (new_entry > stream->stop_entry) {
4505 if (avi->segment.rate < 0.0) {
4506 if (stream->step_entry == stream->start_entry) {
4507 /* we stepped all the way to the start, eos */
4508 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
4511 /* backwards, stop becomes step, find a new step */
4512 stream->stop_entry = stream->step_entry;
4513 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
4514 stream->stop_entry, TRUE);
4516 GST_DEBUG_OBJECT (avi,
4517 "reverse playback jump: start %u, step %u, stop %u",
4518 stream->start_entry, stream->step_entry, stream->stop_entry);
4520 /* and start from the previous keyframe now */
4521 new_entry = stream->step_entry;
4524 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
4529 if (new_entry != old_entry) {
4530 stream->current_entry = new_entry;
4531 stream->current_total = stream->index[new_entry].total;
4533 if (new_entry == old_entry + 1) {
4534 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
4535 old_entry, new_entry);
4536 /* we simply moved one step forwards, reuse current info */
4537 stream->current_timestamp = stream->current_ts_end;
4538 stream->current_offset = stream->current_offset_end;
4539 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4540 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
4542 /* we moved DISCONT, full update */
4543 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4544 &stream->current_timestamp, &stream->current_ts_end,
4545 &stream->current_offset, &stream->current_offset_end);
4546 /* and MARK discont for this stream */
4547 stream->last_flow = GST_FLOW_OK;
4548 stream->discont = TRUE;
4549 GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
4550 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4551 ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
4552 GST_TIME_ARGS (stream->current_timestamp),
4553 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4554 stream->current_offset_end);
4562 GST_DEBUG_OBJECT (avi, "we are EOS");
4563 /* setting current_timestamp to -1 marks EOS */
4564 stream->current_timestamp = -1;
4565 return GST_FLOW_UNEXPECTED;
4569 /* find the stream with the lowest current position when going forwards or with
4570 * the highest position when going backwards, this is the stream
4571 * we should push from next */
4573 gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
4575 guint64 min_time, max_time;
4576 guint stream_num, i;
4579 min_time = G_MAXUINT64;
4582 for (i = 0; i < avi->num_streams; i++) {
4584 GstAviStream *stream;
4586 stream = &avi->stream[i];
4588 /* ignore streams that finished */
4589 if (stream->last_flow == GST_FLOW_UNEXPECTED)
4592 position = stream->current_timestamp;
4594 /* position of -1 is EOS */
4595 if (position != -1) {
4596 if (rate > 0.0 && position < min_time) {
4597 min_time = position;
4599 } else if (rate < 0.0 && position >= max_time) {
4600 max_time = position;
4608 static GstFlowReturn
4609 gst_avi_demux_loop_data (GstAviDemux * avi)
4611 GstFlowReturn ret = GST_FLOW_OK;
4613 GstAviStream *stream;
4614 gboolean processed = FALSE;
4616 guint64 offset, size;
4617 GstClockTime timestamp, duration;
4618 guint64 out_offset, out_offset_end;
4620 GstAviIndexEntry *entry;
4623 stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
4626 if (G_UNLIKELY (stream_num == -1)) {
4627 GST_DEBUG_OBJECT (avi, "all streams are EOS");
4631 /* we have the stream now */
4632 stream = &avi->stream[stream_num];
4634 /* skip streams without pads */
4636 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
4641 /* get the timing info for the entry */
4642 timestamp = stream->current_timestamp;
4643 duration = stream->current_ts_end - timestamp;
4644 out_offset = stream->current_offset;
4645 out_offset_end = stream->current_offset_end;
4647 /* get the entry data info */
4648 entry = &stream->index[stream->current_entry];
4649 offset = entry->offset;
4651 keyframe = ENTRY_IS_KEYFRAME (entry);
4653 /* skip empty entries */
4655 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
4656 stream->current_entry, size, stream->pad);
4660 if (avi->segment.rate > 0.0) {
4661 /* only check this for fowards playback for now */
4662 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4663 && (timestamp > avi->segment.stop)) {
4668 GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
4669 G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
4670 stream_num, offset, offset, keyframe);
4672 /* FIXME, check large chunks and cut them up */
4674 /* pull in the data */
4675 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
4676 if (ret != GST_FLOW_OK)
4679 /* check for short buffers, this is EOS as well */
4680 if (GST_BUFFER_SIZE (buf) < size)
4683 /* invert the picture if needed */
4684 buf = gst_avi_demux_invert (stream, buf);
4686 /* mark non-keyframes */
4688 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4690 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4692 GST_BUFFER_TIMESTAMP (buf) = timestamp;
4693 GST_BUFFER_DURATION (buf) = duration;
4694 GST_BUFFER_OFFSET (buf) = out_offset;
4695 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
4697 /* mark discont when pending */
4698 if (stream->discont) {
4699 GST_DEBUG_OBJECT (avi, "setting DISCONT flag");
4700 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4701 stream->discont = FALSE;
4704 gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
4706 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4708 /* update current position in the segment */
4709 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, timestamp);
4711 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %u, ts %"
4712 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4713 ", off_end %" G_GUINT64_FORMAT,
4714 GST_BUFFER_SIZE (buf), GST_TIME_ARGS (timestamp),
4715 GST_TIME_ARGS (duration), out_offset, out_offset_end);
4717 ret = gst_pad_push (stream->pad, buf);
4719 /* mark as processed, we increment the frame and byte counters then
4720 * leave the while loop and return the GstFlowReturn */
4723 if (avi->segment.rate < 0) {
4724 if (timestamp > avi->segment.stop && ret == GST_FLOW_UNEXPECTED) {
4725 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4726 * we are at the end of the segment, so we just need to jump
4727 * back to the previous section. */
4728 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4733 /* move to next item */
4734 ret = gst_avi_demux_advance (avi, stream, ret);
4737 ret = gst_avi_demux_combine_flows (avi, stream, ret);
4738 } while (!processed);
4746 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
4747 ret = GST_FLOW_UNEXPECTED;
4752 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4753 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4754 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
4755 ret = GST_FLOW_UNEXPECTED;
4756 /* move to next stream */
4761 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
4762 " size=%" G_GUINT64_FORMAT, offset, size);
4767 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4768 ", only got %d/%" G_GUINT64_FORMAT " bytes (truncated file?)", offset,
4769 GST_BUFFER_SIZE (buf), size);
4770 gst_buffer_unref (buf);
4771 ret = GST_FLOW_UNEXPECTED;
4777 * Read data. If we have an index it delegates to
4778 * gst_avi_demux_process_next_entry().
4780 static GstFlowReturn
4781 gst_avi_demux_stream_data (GstAviDemux * avi)
4786 GstFlowReturn res = GST_FLOW_OK;
4787 GstFormat format = GST_FORMAT_TIME;
4789 if (G_UNLIKELY (avi->have_eos)) {
4790 /* Clean adapter, we're done */
4791 gst_adapter_clear (avi->adapter);
4792 return GST_FLOW_UNEXPECTED;
4795 if (G_UNLIKELY (avi->todrop)) {
4798 if ((drop = gst_adapter_available (avi->adapter))) {
4799 if (drop > avi->todrop)
4801 GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
4802 gst_adapter_flush (avi->adapter, drop);
4803 avi->todrop -= drop;
4804 avi->offset += drop;
4808 /* Iterate until need more data, so adapter won't grow too much */
4810 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4814 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4815 GST_FOURCC_ARGS (tag), size);
4817 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4818 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4819 GST_LOG ("Chunk ok");
4820 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4821 GST_DEBUG ("Found sub-index tag");
4822 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4823 /* accept 0 size buffer here */
4824 avi->abort_buffering = FALSE;
4825 GST_DEBUG (" skipping %d bytes for now", size);
4826 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4829 } else if (tag == GST_RIFF_TAG_RIFF) {
4830 /* RIFF tags can appear in ODML files, just jump over them */
4831 if (gst_adapter_available (avi->adapter) >= 12) {
4832 GST_DEBUG ("Found RIFF tag, skipping RIFF header");
4833 gst_adapter_flush (avi->adapter, 12);
4837 } else if (tag == GST_RIFF_TAG_idx1) {
4838 GST_DEBUG ("Found index tag");
4839 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4840 /* accept 0 size buffer here */
4841 avi->abort_buffering = FALSE;
4842 GST_DEBUG (" skipping %d bytes for now", size);
4843 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4846 } else if (tag == GST_RIFF_TAG_LIST) {
4847 /* movi chunks might be grouped in rec list */
4848 if (gst_adapter_available (avi->adapter) >= 12) {
4849 GST_DEBUG ("Found LIST tag, skipping LIST header");
4850 gst_adapter_flush (avi->adapter, 12);
4854 } else if (tag == GST_RIFF_TAG_JUNK || tag == GST_RIFF_TAG_JUNQ) {
4855 /* rec list might contain JUNK chunks */
4856 GST_DEBUG ("Found JUNK tag");
4857 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4858 /* accept 0 size buffer here */
4859 avi->abort_buffering = FALSE;
4860 GST_DEBUG (" skipping %d bytes for now", size);
4861 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4865 GST_DEBUG ("No more stream chunks, send EOS");
4866 avi->have_eos = TRUE;
4867 return GST_FLOW_UNEXPECTED;
4870 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4871 /* supposedly one hopes to catch a nicer chunk later on ... */
4872 /* FIXME ?? give up here rather than possibly ending up going
4873 * through the whole file */
4874 if (avi->abort_buffering) {
4875 avi->abort_buffering = FALSE;
4877 gst_adapter_flush (avi->adapter, 8);
4884 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4885 GST_FOURCC_ARGS (tag), size);
4887 stream_nr = CHUNKID_TO_STREAMNR (tag);
4889 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4891 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4892 stream_nr, GST_FOURCC_ARGS (tag));
4893 avi->offset += 8 + GST_ROUND_UP_2 (size);
4894 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4896 GstAviStream *stream;
4897 GstClockTime next_ts = 0;
4898 GstBuffer *buf = NULL;
4900 gboolean saw_desired_kf = stream_nr != avi->main_stream
4901 || avi->offset >= avi->seek_kf_offset;
4903 if (stream_nr == avi->main_stream && avi->offset == avi->seek_kf_offset) {
4904 GST_DEBUG_OBJECT (avi, "Desired keyframe reached");
4905 avi->seek_kf_offset = 0;
4908 if (saw_desired_kf) {
4909 gst_adapter_flush (avi->adapter, 8);
4912 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
4913 /* patch the size */
4914 GST_BUFFER_SIZE (buf) = size;
4919 GST_DEBUG_OBJECT (avi,
4920 "Desired keyframe not yet reached, flushing chunk");
4921 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4924 offset = avi->offset;
4925 avi->offset += 8 + GST_ROUND_UP_2 (size);
4927 stream = &avi->stream[stream_nr];
4929 /* set delay (if any)
4930 if (stream->strh->init_frames == stream->current_frame &&
4932 stream->delay = next_ts;
4935 /* parsing of corresponding header may have failed */
4936 if (G_UNLIKELY (!stream->pad)) {
4937 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
4938 GST_FOURCC_ARGS (tag));
4940 gst_buffer_unref (buf);
4942 /* get time of this buffer */
4943 gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
4944 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4947 gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
4949 /* increment our positions */
4950 stream->current_entry++;
4951 stream->current_total += size;
4953 /* update current position in the segment */
4954 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
4956 if (saw_desired_kf && buf) {
4957 GstClockTime dur_ts = 0;
4959 /* invert the picture if needed */
4960 buf = gst_avi_demux_invert (stream, buf);
4962 gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
4963 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4966 GST_BUFFER_TIMESTAMP (buf) = next_ts;
4967 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
4968 if (stream->strh->type == GST_RIFF_FCC_vids) {
4969 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
4970 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
4972 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4973 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
4976 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4977 GST_DEBUG_OBJECT (avi,
4978 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
4979 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
4980 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
4981 GST_TIME_ARGS (GST_BUFFER_DURATION (buf)),
4982 GST_BUFFER_OFFSET (buf), size, GST_PAD_NAME (stream->pad));
4984 /* mark discont when pending */
4985 if (G_UNLIKELY (stream->discont)) {
4986 GST_DEBUG_OBJECT (avi, "Setting DISCONT");
4987 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4988 stream->discont = FALSE;
4990 res = gst_pad_push (stream->pad, buf);
4994 res = gst_avi_demux_combine_flows (avi, stream, res);
4995 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4996 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
5010 GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
5011 gst_format_get_name (format));
5012 res = GST_FLOW_ERROR;
5018 * Send pending tags.
5021 push_tag_lists (GstAviDemux * avi)
5029 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
5031 for (i = 0; i < avi->num_streams; i++) {
5032 GstAviStream *stream = &avi->stream[i];
5033 GstPad *pad = stream->pad;
5035 tags = stream->taglist;
5038 GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
5040 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (avi), pad, tags);
5041 stream->taglist = NULL;
5045 if (!(tags = avi->globaltags))
5046 tags = gst_tag_list_new ();
5048 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
5049 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
5051 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
5052 gst_element_found_tags (GST_ELEMENT_CAST (avi), tags);
5053 avi->globaltags = NULL;
5054 avi->got_tags = FALSE;
5058 gst_avi_demux_loop (GstPad * pad)
5061 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5063 switch (avi->state) {
5064 case GST_AVI_DEMUX_START:
5065 res = gst_avi_demux_stream_init_pull (avi);
5066 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5067 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5070 avi->state = GST_AVI_DEMUX_HEADER;
5072 case GST_AVI_DEMUX_HEADER:
5073 res = gst_avi_demux_stream_header_pull (avi);
5074 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5075 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5078 avi->state = GST_AVI_DEMUX_MOVI;
5080 case GST_AVI_DEMUX_MOVI:
5081 if (G_UNLIKELY (avi->seg_event)) {
5082 gst_avi_demux_push_event (avi, avi->seg_event);
5083 avi->seg_event = NULL;
5085 if (G_UNLIKELY (avi->got_tags)) {
5086 push_tag_lists (avi);
5088 /* process each index entry in turn */
5089 res = gst_avi_demux_loop_data (avi);
5091 /* pause when error */
5092 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5093 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
5098 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
5099 res = GST_FLOW_ERROR;
5107 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
5108 avi->segment_running = FALSE;
5109 gst_pad_pause_task (avi->sinkpad);
5111 if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
5112 gboolean push_eos = TRUE;
5114 if (res == GST_FLOW_UNEXPECTED) {
5115 /* handle end-of-stream/segment */
5116 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
5119 if ((stop = avi->segment.stop) == -1)
5120 stop = avi->segment.duration;
5122 GST_INFO_OBJECT (avi, "sending segment_done");
5124 gst_element_post_message
5125 (GST_ELEMENT_CAST (avi),
5126 gst_message_new_segment_done (GST_OBJECT_CAST (avi),
5127 GST_FORMAT_TIME, stop));
5131 /* for fatal errors we post an error message */
5132 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
5133 (_("Internal data stream error.")),
5134 ("streaming stopped, reason %s", gst_flow_get_name (res)));
5137 GST_INFO_OBJECT (avi, "sending eos");
5138 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
5139 (res == GST_FLOW_UNEXPECTED)) {
5140 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
5141 (NULL), ("got eos but no streams (yet)"));
5148 static GstFlowReturn
5149 gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
5152 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5155 if (GST_BUFFER_IS_DISCONT (buf)) {
5156 GST_DEBUG_OBJECT (avi, "got DISCONT");
5157 gst_adapter_clear (avi->adapter);
5158 /* mark all streams DISCONT */
5159 for (i = 0; i < avi->num_streams; i++)
5160 avi->stream[i].discont = TRUE;
5163 GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
5164 gst_adapter_push (avi->adapter, buf);
5166 switch (avi->state) {
5167 case GST_AVI_DEMUX_START:
5168 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
5169 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5173 case GST_AVI_DEMUX_HEADER:
5174 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
5175 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5179 case GST_AVI_DEMUX_MOVI:
5180 if (G_UNLIKELY (avi->seg_event)) {
5181 gst_avi_demux_push_event (avi, avi->seg_event);
5182 avi->seg_event = NULL;
5184 if (G_UNLIKELY (avi->got_tags)) {
5185 push_tag_lists (avi);
5187 res = gst_avi_demux_stream_data (avi);
5189 case GST_AVI_DEMUX_SEEK:
5195 /* obtain and parse indexes */
5196 if (avi->stream[0].indexes && !gst_avi_demux_read_subindexes_push (avi))
5197 /* seek in subindex read function failed */
5200 if (!avi->stream[0].indexes && !avi->have_index
5201 && avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
5202 gst_avi_demux_stream_index_push (avi);
5204 if (avi->have_index) {
5205 /* use the indexes now to construct nice durations */
5206 gst_avi_demux_calculate_durations_from_index (avi);
5208 /* still parsing indexes */
5212 GST_OBJECT_LOCK (avi);
5213 event = avi->seek_event;
5214 avi->seek_event = NULL;
5215 GST_OBJECT_UNLOCK (avi);
5217 /* calculate and perform seek */
5218 if (!avi_demux_handle_seek_push (avi, avi->sinkpad, event))
5221 gst_event_unref (event);
5222 avi->state = GST_AVI_DEMUX_MOVI;
5226 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
5227 ("Illegal internal state"));
5228 res = GST_FLOW_ERROR;
5232 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
5233 gst_flow_get_name (res));
5235 if (G_UNLIKELY (avi->abort_buffering))
5236 goto abort_buffering;
5243 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("failed to read indexes"));
5244 return GST_FLOW_ERROR;
5248 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("push mode seek failed"));
5249 return GST_FLOW_ERROR;
5253 avi->abort_buffering = FALSE;
5254 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
5255 return GST_FLOW_ERROR;
5260 gst_avi_demux_sink_activate (GstPad * sinkpad)
5262 if (gst_pad_check_pull_range (sinkpad)) {
5263 GST_DEBUG ("going to pull mode");
5264 return gst_pad_activate_pull (sinkpad, TRUE);
5266 GST_DEBUG ("going to push (streaming) mode");
5267 return gst_pad_activate_push (sinkpad, TRUE);
5272 gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
5274 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
5277 avi->segment_running = TRUE;
5278 avi->streaming = FALSE;
5279 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
5282 avi->segment_running = FALSE;
5283 return gst_pad_stop_task (sinkpad);
5288 gst_avi_demux_activate_push (GstPad * pad, gboolean active)
5290 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
5293 GST_DEBUG ("avi: activating push/chain function");
5294 avi->streaming = TRUE;
5296 /* create index for some push based seeking if not provided */
5297 GST_OBJECT_LOCK (avi);
5298 if (!avi->element_index) {
5299 GST_DEBUG_OBJECT (avi, "creating index");
5300 avi->element_index = gst_index_factory_make ("memindex");
5302 GST_OBJECT_UNLOCK (avi);
5303 /* object lock might be taken again */
5304 gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (avi),
5308 GST_DEBUG ("avi: deactivating push/chain function");
5315 gst_avi_demux_set_index (GstElement * element, GstIndex * index)
5317 GstAviDemux *avi = GST_AVI_DEMUX (element);
5319 GST_OBJECT_LOCK (avi);
5320 if (avi->element_index)
5321 gst_object_unref (avi->element_index);
5323 avi->element_index = gst_object_ref (index);
5325 avi->element_index = NULL;
5327 GST_OBJECT_UNLOCK (avi);
5328 /* object lock might be taken again */
5330 gst_index_get_writer_id (index, GST_OBJECT_CAST (element), &avi->index_id);
5331 GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
5335 gst_avi_demux_get_index (GstElement * element)
5337 GstIndex *result = NULL;
5338 GstAviDemux *avi = GST_AVI_DEMUX (element);
5340 GST_OBJECT_LOCK (avi);
5341 if (avi->element_index)
5342 result = gst_object_ref (avi->element_index);
5343 GST_OBJECT_UNLOCK (avi);
5345 GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
5350 static GstStateChangeReturn
5351 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
5353 GstStateChangeReturn ret;
5354 GstAviDemux *avi = GST_AVI_DEMUX (element);
5356 switch (transition) {
5357 case GST_STATE_CHANGE_READY_TO_PAUSED:
5358 avi->streaming = FALSE;
5359 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
5365 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
5366 if (ret == GST_STATE_CHANGE_FAILURE)
5369 switch (transition) {
5370 case GST_STATE_CHANGE_PAUSED_TO_READY:
5371 avi->have_index = FALSE;
5372 gst_avi_demux_reset (avi);