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 #ifndef GST_DISABLE_GST_DEBUG
76 static const char *const snap_types[2][2] = {
82 static void gst_avi_demux_finalize (GObject * object);
84 static void gst_avi_demux_reset (GstAviDemux * avi);
87 static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
89 static gboolean gst_avi_demux_handle_src_event (GstPad * pad,
90 GstObject * parent, GstEvent * event);
91 static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
92 GstObject * parent, GstEvent * event);
93 static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
96 static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
98 static gboolean gst_avi_demux_handle_src_query (GstPad * pad,
99 GstObject * parent, GstQuery * query);
100 static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
101 gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
103 static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
104 static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
106 static gboolean gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
108 static void gst_avi_demux_loop (GstPad * pad);
109 static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad,
111 static gboolean gst_avi_demux_sink_activate_mode (GstPad * sinkpad,
112 GstObject * parent, GstPadMode mode, gboolean active);
113 static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstObject * parent,
116 static void gst_avi_demux_set_index (GstElement * element, GstIndex * index);
117 static GstIndex *gst_avi_demux_get_index (GstElement * element);
119 static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
120 GstStateChange transition);
121 static void gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi);
122 static void gst_avi_demux_get_buffer_info (GstAviDemux * avi,
123 GstAviStream * stream, guint entry_n, GstClockTime * timestamp,
124 GstClockTime * ts_end, guint64 * offset, guint64 * offset_end);
126 static void gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf);
128 /* GObject methods */
130 #define gst_avi_demux_parent_class parent_class
131 G_DEFINE_TYPE (GstAviDemux, gst_avi_demux, GST_TYPE_ELEMENT);
134 gst_avi_demux_class_init (GstAviDemuxClass * klass)
136 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
137 GObjectClass *gobject_class = (GObjectClass *) klass;
138 GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl;
139 GstCaps *audcaps, *vidcaps, *subcaps;
141 GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
142 0, "Demuxer for AVI streams");
144 gobject_class->finalize = gst_avi_demux_finalize;
146 gstelement_class->change_state =
147 GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
149 gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_avi_demux_set_index);
150 gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_avi_demux_get_index);
153 audcaps = gst_riff_create_audio_template_caps ();
154 gst_caps_append (audcaps, gst_caps_new_empty_simple ("audio/x-avi-unknown"));
155 audiosrctempl = gst_pad_template_new ("audio_%u",
156 GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
158 vidcaps = gst_riff_create_video_template_caps ();
159 gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
160 gst_caps_append (vidcaps, gst_caps_new_empty_simple ("video/x-avi-unknown"));
161 videosrctempl = gst_pad_template_new ("video_%u",
162 GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
164 subcaps = gst_caps_new_empty_simple ("application/x-subtitle-avi");
165 subsrctempl = gst_pad_template_new ("subtitle_%u",
166 GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
167 gst_element_class_add_pad_template (gstelement_class, audiosrctempl);
168 gst_element_class_add_pad_template (gstelement_class, videosrctempl);
169 gst_element_class_add_pad_template (gstelement_class, subsrctempl);
170 gst_element_class_add_pad_template (gstelement_class,
171 gst_static_pad_template_get (&sink_templ));
173 gst_element_class_set_static_metadata (gstelement_class, "Avi demuxer",
175 "Demultiplex an avi file into audio and video",
176 "Erik Walthinsen <omega@cse.ogi.edu>, "
177 "Wim Taymans <wim.taymans@chello.be>, "
178 "Thijs Vermeir <thijsvermeir@gmail.com>");
182 gst_avi_demux_init (GstAviDemux * avi)
184 avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
185 gst_pad_set_activate_function (avi->sinkpad,
186 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
187 gst_pad_set_activatemode_function (avi->sinkpad,
188 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_mode));
189 gst_pad_set_chain_function (avi->sinkpad,
190 GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
191 gst_pad_set_event_function (avi->sinkpad,
192 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
193 gst_element_add_pad (GST_ELEMENT_CAST (avi), avi->sinkpad);
195 avi->adapter = gst_adapter_new ();
197 gst_avi_demux_reset (avi);
199 GST_OBJECT_FLAG_SET (avi, GST_ELEMENT_FLAG_INDEXABLE);
203 gst_avi_demux_finalize (GObject * object)
205 GstAviDemux *avi = GST_AVI_DEMUX (object);
207 GST_DEBUG ("AVI: finalize");
209 g_object_unref (avi->adapter);
211 G_OBJECT_CLASS (parent_class)->finalize (object);
215 gst_avi_demux_reset_stream (GstAviDemux * avi, GstAviStream * stream)
217 g_free (stream->strh);
218 g_free (stream->strf.data);
219 g_free (stream->name);
220 g_free (stream->index);
221 g_free (stream->indexes);
222 if (stream->initdata)
223 gst_buffer_unref (stream->initdata);
224 if (stream->extradata)
225 gst_buffer_unref (stream->extradata);
227 if (stream->exposed) {
228 gst_pad_set_active (stream->pad, FALSE);
229 gst_element_remove_pad (GST_ELEMENT_CAST (avi), stream->pad);
231 gst_object_unref (stream->pad);
233 if (stream->taglist) {
234 gst_tag_list_free (stream->taglist);
235 stream->taglist = NULL;
237 memset (stream, 0, sizeof (GstAviStream));
241 gst_avi_demux_reset (GstAviDemux * avi)
245 GST_DEBUG ("AVI: reset");
247 for (i = 0; i < avi->num_streams; i++)
248 gst_avi_demux_reset_stream (avi, &avi->stream[i]);
250 avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
251 avi->num_streams = 0;
252 avi->num_v_streams = 0;
253 avi->num_a_streams = 0;
254 avi->num_t_streams = 0;
255 avi->main_stream = -1;
257 avi->state = GST_AVI_DEMUX_START;
259 avi->building_index = FALSE;
261 avi->index_offset = 0;
266 if (avi->element_index)
267 gst_object_unref (avi->element_index);
268 avi->element_index = NULL;
271 if (avi->seg_event) {
272 gst_event_unref (avi->seg_event);
273 avi->seg_event = NULL;
275 if (avi->seek_event) {
276 gst_event_unref (avi->seek_event);
277 avi->seek_event = NULL;
281 gst_tag_list_free (avi->globaltags);
282 avi->globaltags = NULL;
284 avi->got_tags = TRUE; /* we always want to push global tags */
285 avi->have_eos = FALSE;
286 avi->seekable = TRUE;
288 gst_adapter_clear (avi->adapter);
290 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
294 /* GstElement methods */
297 static const GstFormat *
298 gst_avi_demux_get_src_formats (GstPad * pad)
300 GstAviStream *stream = gst_pad_get_element_private (pad);
302 static const GstFormat src_a_formats[] = {
308 static const GstFormat src_v_formats[] = {
314 return (stream->strh->type == GST_RIFF_FCC_auds ?
315 src_a_formats : src_v_formats);
319 /* assumes stream->strf.auds->av_bps != 0 */
320 static inline GstClockTime
321 avi_stream_convert_bytes_to_time_unchecked (GstAviStream * stream,
324 return gst_util_uint64_scale_int (bytes, GST_SECOND,
325 stream->strf.auds->av_bps);
328 static inline guint64
329 avi_stream_convert_time_to_bytes_unchecked (GstAviStream * stream,
332 return gst_util_uint64_scale_int (time, stream->strf.auds->av_bps,
336 /* assumes stream->strh->rate != 0 */
337 static inline GstClockTime
338 avi_stream_convert_frames_to_time_unchecked (GstAviStream * stream,
341 return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
345 static inline guint64
346 avi_stream_convert_time_to_frames_unchecked (GstAviStream * stream,
349 return gst_util_uint64_scale (time, stream->strh->rate,
350 stream->strh->scale * GST_SECOND);
354 gst_avi_demux_src_convert (GstPad * pad,
355 GstFormat src_format,
356 gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
358 GstAviStream *stream = gst_pad_get_element_private (pad);
362 "Received src_format:%s, src_value:%" G_GUINT64_FORMAT
363 ", dest_format:%s", gst_format_get_name (src_format), src_value,
364 gst_format_get_name (*dest_format));
366 if (G_UNLIKELY (src_format == *dest_format)) {
367 *dest_value = src_value;
370 if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
374 if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
375 (src_format == GST_FORMAT_BYTES
376 || *dest_format == GST_FORMAT_BYTES))) {
381 switch (src_format) {
382 case GST_FORMAT_TIME:
383 switch (*dest_format) {
384 case GST_FORMAT_BYTES:
385 *dest_value = gst_util_uint64_scale_int (src_value,
386 stream->strf.auds->av_bps, GST_SECOND);
388 case GST_FORMAT_DEFAULT:
390 gst_util_uint64_scale_round (src_value, stream->strh->rate,
391 stream->strh->scale * GST_SECOND);
398 case GST_FORMAT_BYTES:
399 switch (*dest_format) {
400 case GST_FORMAT_TIME:
401 if (stream->strf.auds->av_bps != 0) {
402 *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
412 case GST_FORMAT_DEFAULT:
413 switch (*dest_format) {
414 case GST_FORMAT_TIME:
416 avi_stream_convert_frames_to_time_unchecked (stream, src_value);
429 "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
430 gst_format_get_name (*dest_format), *dest_value);
435 gst_avi_demux_handle_src_query (GstPad * pad, GstObject * parent,
439 GstAviDemux *avi = GST_AVI_DEMUX (parent);
441 GstAviStream *stream = gst_pad_get_element_private (pad);
443 if (!stream->strh || !stream->strf.data)
444 return gst_pad_query_default (pad, parent, query);
446 switch (GST_QUERY_TYPE (query)) {
447 case GST_QUERY_POSITION:{
450 GST_DEBUG ("pos query for stream %u: frames %u, bytes %u",
451 stream->num, stream->current_entry, stream->current_total);
453 /* FIXME, this looks clumsy */
454 if (stream->strh->type == GST_RIFF_FCC_auds) {
455 if (stream->is_vbr) {
457 pos = gst_util_uint64_scale ((gint64) stream->current_entry *
458 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
459 GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
460 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
461 } else if (stream->strf.auds->av_bps != 0) {
463 pos = gst_util_uint64_scale (stream->current_total, GST_SECOND,
464 (guint64) stream->strf.auds->av_bps);
465 GST_DEBUG_OBJECT (avi,
466 "CBR convert bytes %u, time %" GST_TIME_FORMAT,
467 stream->current_total, GST_TIME_ARGS (pos));
468 } else if (stream->idx_n != 0 && stream->total_bytes != 0) {
469 /* calculate timestamps based on percentage of length */
470 guint64 xlen = avi->avih->us_frame *
471 avi->avih->tot_frames * GST_USECOND;
473 if (stream->is_vbr) {
474 pos = gst_util_uint64_scale (xlen, stream->current_entry,
476 GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
477 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
479 pos = gst_util_uint64_scale (xlen, stream->current_total,
480 stream->total_bytes);
481 GST_DEBUG_OBJECT (avi,
482 "CBR perc convert bytes %u, time %" GST_TIME_FORMAT,
483 stream->current_total, GST_TIME_ARGS (pos));
490 if (stream->strh->rate != 0) {
491 pos = gst_util_uint64_scale ((guint64) stream->current_entry *
492 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
494 pos = stream->current_entry * avi->avih->us_frame * GST_USECOND;
498 GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
499 gst_query_set_position (query, GST_FORMAT_TIME, pos);
501 GST_WARNING ("pos query failed");
504 case GST_QUERY_DURATION:
507 GstClockTime duration;
509 /* only act on audio or video streams */
510 if (stream->strh->type != GST_RIFF_FCC_auds &&
511 stream->strh->type != GST_RIFF_FCC_vids) {
516 /* take stream duration, fall back to avih duration */
517 if ((duration = stream->duration) == -1)
518 duration = avi->duration;
520 gst_query_parse_duration (query, &fmt, NULL);
523 case GST_FORMAT_TIME:
524 gst_query_set_duration (query, fmt, duration);
526 case GST_FORMAT_DEFAULT:
529 GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
532 if (stream->idx_n > 0)
533 gst_query_set_duration (query, fmt, stream->idx_n);
534 else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
535 duration, fmt, &dur))
536 gst_query_set_duration (query, fmt, dur);
545 case GST_QUERY_SEEKING:{
548 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
549 if (fmt == GST_FORMAT_TIME) {
550 gboolean seekable = TRUE;
552 if (avi->streaming) {
553 seekable = avi->seekable;
556 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
557 0, stream->duration);
562 case GST_QUERY_CONVERT:{
563 GstFormat src_fmt, dest_fmt;
564 gint64 src_val, dest_val;
566 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
567 if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
569 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
571 res = gst_pad_query_default (pad, parent, query);
575 res = gst_pad_query_default (pad, parent, query);
583 static const GstEventMask *
584 gst_avi_demux_get_event_mask (GstPad * pad)
586 static const GstEventMask masks[] = {
587 {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
597 gst_avi_demux_seek_streams (GstAviDemux * avi, guint64 offset, gboolean before)
599 GstAviStream *stream;
600 GstIndexEntry *entry;
602 gint64 val, min = offset;
604 for (i = 0; i < avi->num_streams; i++) {
605 stream = &avi->stream[i];
607 entry = gst_index_get_assoc_entry (avi->element_index, stream->index_id,
608 before ? GST_INDEX_LOOKUP_BEFORE : GST_INDEX_LOOKUP_AFTER,
609 GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_BYTES, offset);
613 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
614 GST_DEBUG_OBJECT (avi, "stream %d, previous entry at %"
615 G_GUINT64_FORMAT, i, val);
623 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
624 stream->current_entry = 0;
625 stream->current_total = 0;
629 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
630 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT,
633 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &val);
634 stream->current_total = val;
635 gst_index_entry_assoc_map (entry, GST_FORMAT_DEFAULT, &val);
636 stream->current_entry = val;
644 gst_avi_demux_index_entry_offset_search (GstAviIndexEntry * entry,
647 if (entry->offset < *offset)
649 else if (entry->offset > *offset)
655 gst_avi_demux_seek_streams_index (GstAviDemux * avi, guint64 offset,
658 GstAviStream *stream;
659 GstAviIndexEntry *entry;
661 gint64 val, min = offset;
664 for (i = 0; i < avi->num_streams; i++) {
665 stream = &avi->stream[i];
667 /* compensate for chunk header */
670 gst_util_array_binary_search (stream->index, stream->idx_n,
671 sizeof (GstAviIndexEntry),
672 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
673 before ? GST_SEARCH_MODE_BEFORE : GST_SEARCH_MODE_AFTER, &offset, NULL);
677 index = entry - stream->index;
681 val = stream->index[index].offset;
682 GST_DEBUG_OBJECT (avi,
683 "stream %d, previous entry at %" G_GUINT64_FORMAT, i, val);
691 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
692 stream->current_entry = 0;
693 stream->current_total = 0;
697 val = stream->index[index].offset - 8;
698 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT, i,
701 stream->current_total = stream->index[index].total;
702 stream->current_entry = index;
708 #define GST_AVI_SEEK_PUSH_DISPLACE (4 * GST_SECOND)
711 gst_avi_demux_handle_sink_event (GstPad * pad, GstObject * parent,
715 GstAviDemux *avi = GST_AVI_DEMUX (parent);
717 GST_DEBUG_OBJECT (avi,
718 "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
720 switch (GST_EVENT_TYPE (event)) {
721 case GST_EVENT_SEGMENT:
723 gint64 boffset, offset = 0;
726 /* some debug output */
727 gst_event_copy_segment (event, &segment);
728 GST_DEBUG_OBJECT (avi, "received newsegment %" GST_SEGMENT_FORMAT,
731 /* chain will send initial newsegment after pads have been added */
732 if (avi->state != GST_AVI_DEMUX_MOVI) {
733 GST_DEBUG_OBJECT (avi, "still starting, eating event");
737 /* we only expect a BYTE segment, e.g. following a seek */
738 if (segment.format != GST_FORMAT_BYTES) {
739 GST_DEBUG_OBJECT (avi, "unsupported segment format, ignoring");
743 if (avi->have_index) {
744 GstAviIndexEntry *entry;
745 guint i = 0, index = 0, k = 0;
746 GstAviStream *stream;
748 /* compensate chunk header, stored index offset points after header */
749 boffset = segment.start + 8;
750 /* find which stream we're on */
752 stream = &avi->stream[i];
754 /* find the index for start bytes offset */
755 entry = gst_util_array_binary_search (stream->index,
756 stream->idx_n, sizeof (GstAviIndexEntry),
757 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
758 GST_SEARCH_MODE_AFTER, &boffset, NULL);
762 index = entry - stream->index;
764 /* we are on the stream with a chunk start offset closest to start */
765 if (!offset || stream->index[index].offset < offset) {
766 offset = stream->index[index].offset;
769 /* exact match needs no further searching */
770 if (stream->index[index].offset == segment.start)
772 } while (++i < avi->num_streams);
775 stream = &avi->stream[k];
777 /* so we have no idea what is to come, or where we are */
779 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
783 /* get the ts corresponding to start offset bytes for the stream */
784 gst_avi_demux_get_buffer_info (avi, stream, index,
785 (GstClockTime *) & segment.time, NULL, NULL, NULL);
787 } else if (avi->element_index) {
788 GstIndexEntry *entry;
790 /* Let's check if we have an index entry for this position */
791 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
792 GST_INDEX_LOOKUP_AFTER, GST_ASSOCIATION_FLAG_NONE,
793 GST_FORMAT_BYTES, segment.start);
795 /* we can not go where we have not yet been before ... */
797 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
801 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME,
802 (gint64 *) & segment.time);
803 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &offset);
806 GST_WARNING_OBJECT (avi, "no index data, forcing EOS");
810 segment.format = GST_FORMAT_TIME;
811 segment.start = segment.time;
812 segment.stop = GST_CLOCK_TIME_NONE;
813 segment.position = segment.start;
815 /* rescue duration */
816 segment.duration = avi->segment.duration;
818 /* set up segment and send downstream */
819 gst_segment_copy_into (&segment, &avi->segment);
821 GST_DEBUG_OBJECT (avi, "Pushing newseg %" GST_SEGMENT_FORMAT, &segment);
822 gst_avi_demux_push_event (avi, gst_event_new_segment (&segment));
824 GST_DEBUG_OBJECT (avi, "next chunk expected at %" G_GINT64_FORMAT,
827 /* adjust state for streaming thread accordingly */
829 gst_avi_demux_seek_streams_index (avi, offset, FALSE);
832 gst_avi_demux_seek_streams (avi, offset, FALSE);
835 /* set up streaming thread */
836 g_assert (offset >= boffset);
837 avi->offset = boffset;
838 avi->todrop = offset - boffset;
841 gst_event_unref (event);
846 avi->have_eos = TRUE;
851 if (avi->state != GST_AVI_DEMUX_MOVI) {
852 gst_event_unref (event);
853 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
854 (NULL), ("got eos and didn't receive a complete header object"));
855 } else if (!gst_avi_demux_push_event (avi, event)) {
856 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
857 (NULL), ("got eos but no streams (yet)"));
861 case GST_EVENT_FLUSH_STOP:
865 gst_adapter_clear (avi->adapter);
866 avi->have_eos = FALSE;
867 for (i = 0; i < avi->num_streams; i++) {
868 avi->stream[i].last_flow = GST_FLOW_OK;
869 avi->stream[i].discont = TRUE;
871 /* fall through to default case so that the event gets passed downstream */
874 res = gst_pad_event_default (pad, parent, event);
882 gst_avi_demux_handle_src_event (GstPad * pad, GstObject * parent,
886 GstAviDemux *avi = GST_AVI_DEMUX (parent);
888 GST_DEBUG_OBJECT (avi,
889 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
891 switch (GST_EVENT_TYPE (event)) {
893 if (!avi->streaming) {
894 res = gst_avi_demux_handle_seek (avi, pad, event);
896 res = gst_avi_demux_handle_seek_push (avi, pad, event);
898 gst_event_unref (event);
901 case GST_EVENT_NAVIGATION:
903 gst_event_unref (event);
906 res = gst_pad_event_default (pad, parent, event);
913 /* streaming helper (push) */
916 * gst_avi_demux_peek_chunk_info:
918 * @tag: holder for tag
919 * @size: holder for tag size
921 * Peek next chunk info (tag and size)
923 * Returns: TRUE when one chunk info has been got
926 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
928 const guint8 *data = NULL;
930 if (gst_adapter_available (avi->adapter) < 8)
933 data = gst_adapter_map (avi->adapter, 8);
934 *tag = GST_READ_UINT32_LE (data);
935 *size = GST_READ_UINT32_LE (data + 4);
936 gst_adapter_unmap (avi->adapter);
942 * gst_avi_demux_peek_chunk:
944 * @tag: holder for tag
945 * @size: holder for tag size
947 * Peek enough data for one full chunk
949 * Returns: %TRUE when one chunk has been got
952 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
954 guint32 peek_size = 0;
957 if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
960 /* size 0 -> empty data buffer would surprise most callers,
961 * large size -> do not bother trying to squeeze that into adapter,
962 * so we throw poor man's exception, which can be caught if caller really
963 * wants to handle 0 size chunk */
964 if (!(*size) || (*size) >= (1 << 30))
967 peek_size = (*size + 1) & ~1;
968 available = gst_adapter_available (avi->adapter);
970 GST_DEBUG_OBJECT (avi,
971 "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
972 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
974 if (available < (8 + peek_size))
982 GST_INFO_OBJECT (avi, "Failed to peek");
987 GST_INFO_OBJECT (avi,
988 "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
989 GST_FOURCC_ARGS (*tag));
990 /* chain should give up */
991 avi->abort_buffering = TRUE;
996 GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
997 available, 8 + peek_size);
1005 * gst_avi_demux_parse_file_header:
1006 * @element: caller element (used for errors/debug).
1007 * @buf: input data to be used for parsing.
1009 * "Open" a RIFF/AVI file. The buffer should be at least 12
1010 * bytes long. Takes ownership of @buf.
1012 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
1013 * Throws an error, caller should error out (fatal).
1016 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
1021 stamp = gst_util_get_timestamp ();
1023 /* riff_parse posts an error */
1024 if (!gst_riff_parse_file_header (element, buf, &doctype))
1027 if (doctype != GST_RIFF_RIFF_AVI)
1030 stamp = gst_util_get_timestamp () - stamp;
1031 GST_DEBUG_OBJECT (element, "header parsing took %" GST_TIME_FORMAT,
1032 GST_TIME_ARGS (stamp));
1039 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
1040 ("File is not an AVI file: %" GST_FOURCC_FORMAT,
1041 GST_FOURCC_ARGS (doctype)));
1047 * Read AVI file tag when streaming
1049 static GstFlowReturn
1050 gst_avi_demux_stream_init_push (GstAviDemux * avi)
1052 if (gst_adapter_available (avi->adapter) >= 12) {
1055 tmp = gst_adapter_take_buffer (avi->adapter, 12);
1057 GST_DEBUG ("Parsing avi header");
1058 if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), tmp)) {
1059 return GST_FLOW_ERROR;
1061 GST_DEBUG ("header ok");
1064 avi->state = GST_AVI_DEMUX_HEADER;
1072 static GstFlowReturn
1073 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
1076 GstBuffer *buf = NULL;
1078 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
1079 if (res != GST_FLOW_OK)
1081 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
1091 GST_DEBUG_OBJECT (avi, "error parsing file header");
1092 return GST_FLOW_ERROR;
1096 /* AVI header handling */
1098 * gst_avi_demux_parse_avih:
1099 * @avi: caller element (used for errors/debug).
1100 * @buf: input data to be used for parsing.
1101 * @avih: pointer to structure (filled in by function) containing
1102 * stream information (such as flags, number of streams, etc.).
1104 * Read 'avih' header. Discards buffer after use.
1106 * Returns: TRUE on success, FALSE otherwise. Throws an error if
1107 * the header is invalid. The caller should error out
1111 gst_avi_demux_parse_avih (GstAviDemux * avi,
1112 GstBuffer * buf, gst_riff_avih ** _avih)
1114 gst_riff_avih *avih;
1120 size = gst_buffer_get_size (buf);
1121 if (size < sizeof (gst_riff_avih))
1122 goto avih_too_small;
1124 avih = g_malloc (size);
1125 gst_buffer_extract (buf, 0, avih, size);
1127 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1128 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
1129 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
1130 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
1131 avih->flags = GUINT32_FROM_LE (avih->flags);
1132 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
1133 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
1134 avih->streams = GUINT32_FROM_LE (avih->streams);
1135 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
1136 avih->width = GUINT32_FROM_LE (avih->width);
1137 avih->height = GUINT32_FROM_LE (avih->height);
1138 avih->scale = GUINT32_FROM_LE (avih->scale);
1139 avih->rate = GUINT32_FROM_LE (avih->rate);
1140 avih->start = GUINT32_FROM_LE (avih->start);
1141 avih->length = GUINT32_FROM_LE (avih->length);
1145 GST_INFO_OBJECT (avi, "avih tag found:");
1146 GST_INFO_OBJECT (avi, " us_frame %u", avih->us_frame);
1147 GST_INFO_OBJECT (avi, " max_bps %u", avih->max_bps);
1148 GST_INFO_OBJECT (avi, " pad_gran %u", avih->pad_gran);
1149 GST_INFO_OBJECT (avi, " flags 0x%08x", avih->flags);
1150 GST_INFO_OBJECT (avi, " tot_frames %u", avih->tot_frames);
1151 GST_INFO_OBJECT (avi, " init_frames %u", avih->init_frames);
1152 GST_INFO_OBJECT (avi, " streams %u", avih->streams);
1153 GST_INFO_OBJECT (avi, " bufsize %u", avih->bufsize);
1154 GST_INFO_OBJECT (avi, " width %u", avih->width);
1155 GST_INFO_OBJECT (avi, " height %u", avih->height);
1156 GST_INFO_OBJECT (avi, " scale %u", avih->scale);
1157 GST_INFO_OBJECT (avi, " rate %u", avih->rate);
1158 GST_INFO_OBJECT (avi, " start %u", avih->start);
1159 GST_INFO_OBJECT (avi, " length %u", avih->length);
1162 gst_buffer_unref (buf);
1164 if (avih->us_frame != 0 && avih->tot_frames != 0)
1166 (guint64) avih->us_frame * (guint64) avih->tot_frames * 1000;
1168 avi->duration = GST_CLOCK_TIME_NONE;
1170 GST_INFO_OBJECT (avi, " header duration %" GST_TIME_FORMAT,
1171 GST_TIME_ARGS (avi->duration));
1178 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No buffer"));
1183 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
1184 ("Too small avih (%" G_GSIZE_FORMAT " available, %d needed)",
1185 size, (int) sizeof (gst_riff_avih)));
1186 gst_buffer_unref (buf);
1192 * gst_avi_demux_parse_superindex:
1193 * @avi: caller element (used for debugging/errors).
1194 * @buf: input data to use for parsing.
1195 * @locations: locations in the file (byte-offsets) that contain
1196 * the actual indexes (see get_avi_demux_parse_subindex()).
1197 * The array ends with GST_BUFFER_OFFSET_NONE.
1199 * Reads superindex (openDML-2 spec stuff) from the provided data.
1201 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
1202 * on error, but they are not fatal.
1205 gst_avi_demux_parse_superindex (GstAviDemux * avi,
1206 GstBuffer * buf, guint64 ** _indexes)
1218 gst_buffer_map (buf, &map, GST_MAP_READ);
1229 /* check type of index. The opendml2 specs state that
1230 * there should be 4 dwords per array entry. Type can be
1231 * either frame or field (and we don't care). */
1232 if (GST_READ_UINT16_LE (data) != 4 ||
1233 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
1234 GST_WARNING_OBJECT (avi,
1235 "Superindex for stream has unexpected "
1236 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1237 GST_READ_UINT16_LE (data), data[2], data[3]);
1238 bpe = GST_READ_UINT16_LE (data) * 4;
1240 num = GST_READ_UINT32_LE (&data[4]);
1242 GST_DEBUG_OBJECT (avi, "got %d indexes", num);
1244 /* this can't work out well ... */
1245 if (num > G_MAXUINT32 >> 1 || bpe < 8) {
1246 goto invalid_params;
1249 indexes = g_new (guint64, num + 1);
1250 for (i = 0; i < num; i++) {
1251 if (size < 24 + bpe * (i + 1))
1253 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1254 GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
1256 indexes[i] = GST_BUFFER_OFFSET_NONE;
1257 *_indexes = indexes;
1259 gst_buffer_unmap (buf, &map);
1260 gst_buffer_unref (buf);
1267 GST_ERROR_OBJECT (avi,
1268 "Not enough data to parse superindex (%" G_GSIZE_FORMAT
1269 " available, 24 needed)", size);
1271 gst_buffer_unmap (buf, &map);
1272 gst_buffer_unref (buf);
1278 GST_ERROR_OBJECT (avi, "invalid index parameters (num = %d, bpe = %d)",
1280 gst_buffer_unmap (buf, &map);
1281 gst_buffer_unref (buf);
1286 /* add an entry to the index of a stream. @num should be an estimate of the
1287 * total amount of index entries for all streams and is used to dynamically
1288 * allocate memory for the index entries. */
1289 static inline gboolean
1290 gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
1291 guint num, GstAviIndexEntry * entry)
1293 /* ensure index memory */
1294 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
1295 guint idx_max = stream->idx_max;
1296 GstAviIndexEntry *new_idx;
1298 /* we need to make some more room */
1300 /* initial size guess, assume each stream has an equal amount of entries,
1301 * overshoot with at least 8K */
1302 idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
1304 idx_max += 8192 / sizeof (GstAviIndexEntry);
1305 GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
1306 stream->idx_max, idx_max);
1308 new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
1309 /* out of memory, if this fails stream->index is untouched. */
1310 if (G_UNLIKELY (!new_idx))
1313 stream->index = new_idx;
1314 stream->idx_max = idx_max;
1317 /* update entry total and stream stats. The entry total can be converted to
1318 * the timestamp of the entry easily. */
1319 if (stream->strh->type == GST_RIFF_FCC_auds) {
1322 if (stream->is_vbr) {
1323 entry->total = stream->total_blocks;
1325 entry->total = stream->total_bytes;
1327 blockalign = stream->strf.auds->blockalign;
1329 stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
1331 stream->total_blocks++;
1333 if (stream->is_vbr) {
1334 entry->total = stream->idx_n;
1336 entry->total = stream->total_bytes;
1339 stream->total_bytes += entry->size;
1340 if (ENTRY_IS_KEYFRAME (entry))
1341 stream->n_keyframes++;
1344 GST_LOG_OBJECT (avi,
1345 "Adding stream %u, index entry %d, kf %d, size %u "
1346 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
1347 stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
1349 stream->index[stream->idx_n++] = *entry;
1354 /* given @entry_n in @stream, calculate info such as timestamps and
1355 * offsets for the entry. */
1357 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1358 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1359 guint64 * offset, guint64 * offset_end)
1361 GstAviIndexEntry *entry;
1363 entry = &stream->index[entry_n];
1365 if (stream->is_vbr) {
1366 /* VBR stream next timestamp */
1367 if (stream->strh->type == GST_RIFF_FCC_auds) {
1370 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
1372 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1377 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
1379 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1382 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
1383 /* constant rate stream */
1386 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
1388 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
1389 entry->total + entry->size);
1391 if (stream->strh->type == GST_RIFF_FCC_vids) {
1392 /* video offsets are the frame number */
1396 *offset_end = entry_n + 1;
1398 /* no offsets for audio */
1406 /* collect and debug stats about the indexes for all streams.
1407 * This method is also responsible for filling in the stream duration
1408 * as measured by the amount of index entries.
1410 * Returns TRUE if the index is not empty, else FALSE */
1412 gst_avi_demux_do_index_stats (GstAviDemux * avi)
1414 guint total_idx = 0;
1416 #ifndef GST_DISABLE_GST_DEBUG
1417 guint total_max = 0;
1420 /* get stream stats now */
1421 for (i = 0; i < avi->num_streams; i++) {
1422 GstAviStream *stream;
1424 if (G_UNLIKELY (!(stream = &avi->stream[i])))
1426 if (G_UNLIKELY (!stream->strh))
1428 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
1431 /* we interested in the end_ts of the last entry, which is the total
1432 * duration of this stream */
1433 gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
1434 NULL, &stream->idx_duration, NULL, NULL);
1436 total_idx += stream->idx_n;
1437 #ifndef GST_DISABLE_GST_DEBUG
1438 total_max += stream->idx_max;
1440 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
1441 "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
1442 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
1443 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
1444 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
1445 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
1447 total_idx *= sizeof (GstAviIndexEntry);
1448 #ifndef GST_DISABLE_GST_DEBUG
1449 total_max *= sizeof (GstAviIndexEntry);
1451 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
1452 total_max, total_idx, total_max - total_idx);
1454 if (total_idx == 0) {
1455 GST_WARNING_OBJECT (avi, "Index is empty !");
1462 * gst_avi_demux_parse_subindex:
1464 * @buf: input data to use for parsing.
1465 * @stream: stream context.
1466 * @entries_list: a list (returned by the function) containing all the
1467 * indexes parsed in this specific subindex. The first
1468 * entry is also a pointer to allocated memory that needs
1469 * to be free´ed. May be NULL if no supported indexes were
1472 * Reads superindex (openDML-2 spec stuff) from the provided data.
1473 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1475 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1476 * throw an error, caller should bail out asap.
1479 gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
1491 gst_buffer_map (buf, &map, GST_MAP_READ);
1498 /* We don't support index-data yet */
1500 goto not_implemented;
1502 /* check type of index. The opendml2 specs state that
1503 * there should be 4 dwords per array entry. Type can be
1504 * either frame or field (and we don't care). */
1505 bpe = (data[2] & 0x01) ? 12 : 8;
1506 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1507 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1508 GST_WARNING_OBJECT (avi,
1509 "Superindex for stream %d has unexpected "
1510 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1511 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1512 bpe = GST_READ_UINT16_LE (data) * 4;
1514 num = GST_READ_UINT32_LE (&data[4]);
1515 baseoff = GST_READ_UINT64_LE (&data[12]);
1517 /* If there's nothing, just return ! */
1521 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1523 for (i = 0; i < num; i++) {
1524 GstAviIndexEntry entry;
1526 if (map.size < 24 + bpe * (i + 1))
1529 /* fill in offset and size. offset contains the keyframe flag in the
1531 entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1532 entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1534 if (stream->strh->type == GST_RIFF_FCC_auds) {
1535 /* all audio frames are keyframes */
1536 ENTRY_SET_KEYFRAME (&entry);
1538 /* else read flags */
1539 entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
1541 entry.size &= ~0x80000000;
1544 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
1548 gst_buffer_unmap (buf, &map);
1549 gst_buffer_unref (buf);
1556 GST_ERROR_OBJECT (avi,
1557 "Not enough data to parse subindex (%" G_GSIZE_FORMAT
1558 " available, 24 needed)", map.size);
1559 goto done; /* continue */
1563 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1564 ("Subindex-is-data is not implemented"));
1565 gst_buffer_unmap (buf, &map);
1566 gst_buffer_unref (buf);
1571 GST_DEBUG_OBJECT (avi, "the index is empty");
1572 goto done; /* continue */
1576 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1577 ("Cannot allocate memory for %u*%u=%u bytes",
1578 (guint) sizeof (GstAviIndexEntry), num,
1579 (guint) sizeof (GstAviIndexEntry) * num));
1580 gst_buffer_unmap (buf, &map);
1581 gst_buffer_unref (buf);
1587 * Create and push a flushing seek event upstream
1590 perform_seek_to_offset (GstAviDemux * demux, guint64 offset)
1595 GST_DEBUG_OBJECT (demux, "Seeking to %" G_GUINT64_FORMAT, offset);
1598 gst_event_new_seek (1.0, GST_FORMAT_BYTES,
1599 GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
1600 GST_SEEK_TYPE_NONE, -1);
1602 res = gst_pad_push_event (demux->sinkpad, event);
1605 demux->offset = offset;
1610 * Read AVI index when streaming
1613 gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
1615 guint32 tag = 0, size;
1616 GstBuffer *buf = NULL;
1619 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1621 if (avi->odml_subidxs[avi->odml_subidx] != avi->offset)
1624 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1627 /* this is the ODML chunk we expect */
1628 odml_stream = avi->odml_stream;
1630 if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + odml_stream / 10,
1631 '0' + odml_stream % 10)) &&
1632 (tag != GST_MAKE_FOURCC ('0' + odml_stream / 10,
1633 '0' + odml_stream % 10, 'i', 'x'))) {
1634 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1635 GST_FOURCC_ARGS (tag));
1639 avi->offset += 8 + GST_ROUND_UP_2 (size);
1640 /* flush chunk header so we get just the 'size' payload data */
1641 gst_adapter_flush (avi->adapter, 8);
1642 buf = gst_adapter_take_buffer (avi->adapter, size);
1644 if (!gst_avi_demux_parse_subindex (avi, &avi->stream[odml_stream], buf))
1647 /* we parsed the index, go to next subindex */
1650 if (avi->odml_subidxs[avi->odml_subidx] == GST_BUFFER_OFFSET_NONE) {
1651 /* we reached the end of the indexes for this stream, move to the next
1652 * stream to handle the first index */
1654 avi->odml_subidx = 0;
1656 if (avi->odml_stream < avi->num_streams) {
1657 /* there are more indexes */
1658 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
1660 /* we're done, get stream stats now */
1661 avi->have_index = gst_avi_demux_do_index_stats (avi);
1667 /* seek to next index */
1668 return perform_seek_to_offset (avi, avi->odml_subidxs[avi->odml_subidx]);
1675 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
1681 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1683 for (n = 0; n < avi->num_streams; n++) {
1684 GstAviStream *stream = &avi->stream[n];
1686 if (stream->indexes == NULL)
1689 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1690 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
1691 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1693 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1694 '0' + stream->num % 10)) &&
1695 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1696 '0' + stream->num % 10, 'i', 'x'))) {
1697 /* Some ODML files (created by god knows what muxer) have a ##ix format
1698 * instead of the 'official' ix##. They are still valid though. */
1699 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1700 GST_FOURCC_ARGS (tag));
1701 gst_buffer_unref (buf);
1705 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1709 g_free (stream->indexes);
1710 stream->indexes = NULL;
1712 /* get stream stats now */
1713 avi->have_index = gst_avi_demux_do_index_stats (avi);
1717 * gst_avi_demux_riff_parse_vprp:
1718 * @element: caller element (used for debugging/error).
1719 * @buf: input data to be used for parsing, stripped from header.
1720 * @vprp: a pointer (returned by this function) to a filled-in vprp
1721 * structure. Caller should free it.
1723 * Parses a video stream´s vprp. This function takes ownership of @buf.
1725 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1726 * should be skipped on error, but it is not fatal.
1729 gst_avi_demux_riff_parse_vprp (GstElement * element,
1730 GstBuffer * buf, gst_riff_vprp ** _vprp)
1732 gst_riff_vprp *vprp;
1736 g_return_val_if_fail (buf != NULL, FALSE);
1737 g_return_val_if_fail (_vprp != NULL, FALSE);
1739 size = gst_buffer_get_size (buf);
1741 if (size < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1744 vprp = g_malloc (size);
1745 gst_buffer_extract (buf, 0, vprp, size);
1747 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1748 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1749 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1750 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1751 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1752 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1753 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1754 vprp->width = GUINT32_FROM_LE (vprp->width);
1755 vprp->height = GUINT32_FROM_LE (vprp->height);
1756 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1760 /* calculate fields based on size */
1761 k = (size - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) / vprp->fields;
1762 if (vprp->fields > k) {
1763 GST_WARNING_OBJECT (element,
1764 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1767 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1768 GST_WARNING_OBJECT (element,
1769 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1770 GST_RIFF_VPRP_VIDEO_FIELDS);
1771 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1773 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1774 for (k = 0; k < vprp->fields; k++) {
1775 gst_riff_vprp_video_field_desc *fd;
1777 fd = &vprp->field_info[k];
1778 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1779 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1780 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1781 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1782 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1783 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1784 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1785 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1790 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1791 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1792 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1793 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1794 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1795 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1796 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1797 vprp->aspect & 0xffff);
1798 GST_INFO_OBJECT (element, " width %d", vprp->width);
1799 GST_INFO_OBJECT (element, " height %d", vprp->height);
1800 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1801 for (k = 0; k < vprp->fields; k++) {
1802 gst_riff_vprp_video_field_desc *fd;
1804 fd = &(vprp->field_info[k]);
1805 GST_INFO_OBJECT (element, " field %u description:", k);
1806 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1807 fd->compressed_bm_height);
1808 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1809 fd->compressed_bm_width);
1810 GST_INFO_OBJECT (element, " valid_bm_height %d",
1811 fd->valid_bm_height);
1812 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1813 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1814 fd->valid_bm_x_offset);
1815 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1816 fd->valid_bm_y_offset);
1817 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1818 fd->video_x_t_offset);
1819 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1822 gst_buffer_unref (buf);
1831 GST_ERROR_OBJECT (element,
1832 "Too small vprp (%" G_GSIZE_FORMAT " available, at least %d needed)",
1833 size, (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1834 gst_buffer_unref (buf);
1840 gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
1844 GST_DEBUG_OBJECT (avi, "force : %d", force);
1846 for (i = 0; i < avi->num_streams; i++) {
1847 GstAviStream *stream = &avi->stream[i];
1849 if (force || stream->idx_n != 0) {
1850 GST_LOG_OBJECT (avi, "Adding pad %s" GST_PTR_FORMAT,
1851 GST_PAD_NAME (stream->pad));
1852 gst_element_add_pad ((GstElement *) avi, stream->pad);
1855 if (avi->element_index)
1856 gst_index_get_writer_id (avi->element_index,
1857 GST_OBJECT_CAST (stream->pad), &stream->index_id);
1860 stream->exposed = TRUE;
1861 if (avi->main_stream == -1)
1862 avi->main_stream = i;
1864 GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
1866 gst_avi_demux_reset_stream (avi, stream);
1871 /* buf contains LIST chunk data, and will be padded to even size,
1872 * since some buggy files do not account for the padding of chunks
1873 * within a LIST in the size of the LIST */
1875 gst_avi_demux_roundup_list (GstAviDemux * avi, GstBuffer ** buf)
1879 size = gst_buffer_get_size (*buf);
1881 if (G_UNLIKELY (size & 1)) {
1885 GST_DEBUG_OBJECT (avi, "rounding up dubious list size %" G_GSIZE_FORMAT,
1887 obuf = gst_buffer_new_and_alloc (size + 1);
1889 gst_buffer_map (obuf, &map, GST_MAP_WRITE);
1890 gst_buffer_extract (*buf, 0, map.data, size);
1891 /* assume 0 padding, at least makes outcome deterministic */
1893 gst_buffer_unmap (obuf, &map);
1894 gst_buffer_replace (buf, obuf);
1899 * gst_avi_demux_parse_stream:
1900 * @avi: calling element (used for debugging/errors).
1901 * @buf: input buffer used to parse the stream.
1903 * Parses all subchunks in a strl chunk (which defines a single
1904 * stream). Discards the buffer after use. This function will
1905 * increment the stream counter internally.
1907 * Returns: whether the stream was identified successfully.
1908 * Errors are not fatal. It does indicate the stream
1912 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1914 GstAviStream *stream;
1915 GstElementClass *klass;
1916 GstPadTemplate *templ;
1917 GstBuffer *sub = NULL;
1920 gchar *codec_name = NULL, *padname = NULL;
1921 const gchar *tag_name;
1922 GstCaps *caps = NULL;
1924 GstElement *element;
1925 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1926 gst_riff_vprp *vprp = NULL;
1928 element = GST_ELEMENT_CAST (avi);
1930 GST_DEBUG_OBJECT (avi, "Parsing stream");
1932 gst_avi_demux_roundup_list (avi, &buf);
1934 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1935 GST_WARNING_OBJECT (avi,
1936 "maximum no of streams (%d) exceeded, ignoring stream",
1937 GST_AVI_DEMUX_MAX_STREAMS);
1938 gst_buffer_unref (buf);
1939 /* not a fatal error, let's say */
1943 stream = &avi->stream[avi->num_streams];
1945 /* initial settings */
1946 stream->idx_duration = GST_CLOCK_TIME_NONE;
1947 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1948 stream->duration = GST_CLOCK_TIME_NONE;
1950 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1951 /* sub can be NULL if the chunk is empty */
1953 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1954 GST_FOURCC_ARGS (tag));
1958 case GST_RIFF_TAG_strh:
1960 gst_riff_strh *strh;
1963 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1966 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1967 /* ownership given away */
1969 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1973 strh = stream->strh;
1974 /* sanity check; stream header frame rate matches global header
1976 if (stream->strh->type == GST_RIFF_FCC_vids) {
1978 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1980 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1981 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1982 "frame duration = %d ms", strh->rate, strh->scale,
1983 (gint) (s_dur / GST_MSECOND));
1984 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1985 strh->rate = GST_SECOND / GST_USECOND;
1986 strh->scale = h_dur / GST_USECOND;
1987 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1988 strh->rate, strh->scale);
1991 /* determine duration as indicated by header */
1992 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1993 strh->scale, GST_SECOND, (guint64) strh->rate);
1994 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1995 GST_TIME_ARGS (stream->hdr_duration));
1996 if (stream->hdr_duration == 0)
1997 stream->hdr_duration = GST_CLOCK_TIME_NONE;
2002 case GST_RIFF_TAG_strf:
2004 gboolean res = FALSE;
2007 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
2011 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
2014 switch (stream->strh->type) {
2015 case GST_RIFF_FCC_vids:
2016 stream->is_vbr = TRUE;
2017 res = gst_riff_parse_strf_vids (element, sub,
2018 &stream->strf.vids, &stream->extradata);
2020 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
2022 case GST_RIFF_FCC_auds:
2024 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
2025 &stream->extradata);
2029 stream->is_vbr = (stream->strh->samplesize == 0)
2030 && stream->strh->scale > 1
2031 && stream->strf.auds->blockalign != 1;
2032 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
2033 stream->is_vbr, res);
2034 /* we need these or we have no way to come up with timestamps */
2035 if ((!stream->is_vbr && !stream->strf.auds->av_bps) ||
2036 (stream->is_vbr && (!stream->strh->scale ||
2037 !stream->strh->rate))) {
2038 GST_WARNING_OBJECT (element,
2039 "invalid audio header, ignoring stream");
2042 /* some more sanity checks */
2043 if (stream->is_vbr) {
2044 if (stream->strf.auds->blockalign <= 4) {
2045 /* that would mean (too) many frames per chunk,
2046 * so not likely set as expected */
2047 GST_DEBUG_OBJECT (element,
2048 "suspicious blockalign %d for VBR audio; "
2049 "overriding to 1 frame per chunk",
2050 stream->strf.auds->blockalign);
2051 /* this should top any likely value */
2052 stream->strf.auds->blockalign = (1 << 12);
2056 case GST_RIFF_FCC_iavs:
2057 stream->is_vbr = TRUE;
2058 res = gst_riff_parse_strf_iavs (element, sub,
2059 &stream->strf.iavs, &stream->extradata);
2061 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
2063 case GST_RIFF_FCC_txts:
2064 /* nothing to parse here */
2065 stream->is_vbr = (stream->strh->samplesize == 0)
2066 && (stream->strh->scale > 1);
2070 GST_ERROR_OBJECT (avi,
2071 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
2072 GST_FOURCC_ARGS (stream->strh->type));
2076 gst_buffer_unref (sub);
2084 case GST_RIFF_TAG_vprp:
2087 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
2091 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
2095 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
2099 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
2100 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
2101 /* not considered fatal */
2109 case GST_RIFF_TAG_strd:
2110 if (stream->initdata)
2111 gst_buffer_unref (stream->initdata);
2112 stream->initdata = sub;
2115 case GST_RIFF_TAG_strn:
2116 g_free (stream->name);
2120 gst_buffer_map (sub, &map, GST_MAP_READ);
2121 stream->name = g_strndup ((gchar *) map.data, map.size);
2122 gst_buffer_unmap (sub, &map);
2123 gst_buffer_unref (sub);
2126 stream->name = g_strdup ("");
2128 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
2131 gst_avi_demux_parse_idit (avi, sub);
2134 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
2135 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
2136 '0' + avi->num_streams % 10)) {
2137 g_free (stream->indexes);
2138 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
2139 stream->superindex = TRUE;
2143 GST_WARNING_OBJECT (avi,
2144 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
2145 GST_FOURCC_ARGS (tag));
2147 case GST_RIFF_TAG_JUNQ:
2148 case GST_RIFF_TAG_JUNK:
2152 gst_buffer_unref (sub);
2158 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
2163 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
2167 /* get class to figure out the template */
2168 klass = GST_ELEMENT_GET_CLASS (avi);
2170 /* we now have all info, let´s set up a pad and a caps and be done */
2171 /* create stream name + pad */
2172 switch (stream->strh->type) {
2173 case GST_RIFF_FCC_vids:{
2176 fourcc = (stream->strf.vids->compression) ?
2177 stream->strf.vids->compression : stream->strh->fcc_handler;
2178 padname = g_strdup_printf ("video_%u", avi->num_v_streams);
2179 templ = gst_element_class_get_pad_template (klass, "video_%u");
2180 caps = gst_riff_create_video_caps (fourcc, stream->strh,
2181 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
2183 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2184 G_TYPE_INT, fourcc, NULL);
2185 } else if (got_vprp && vprp) {
2186 guint32 aspect_n, aspect_d;
2189 aspect_n = vprp->aspect >> 16;
2190 aspect_d = vprp->aspect & 0xffff;
2191 /* calculate the pixel aspect ratio using w/h and aspect ratio */
2192 n = aspect_n * stream->strf.vids->height;
2193 d = aspect_d * stream->strf.vids->width;
2195 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
2197 /* very local, not needed elsewhere */
2201 tag_name = GST_TAG_VIDEO_CODEC;
2202 avi->num_v_streams++;
2205 case GST_RIFF_FCC_auds:{
2206 /* FIXME: Do something with the channel reorder map */
2207 padname = g_strdup_printf ("audio_%u", avi->num_a_streams);
2208 templ = gst_element_class_get_pad_template (klass, "audio_%u");
2209 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
2210 stream->strh, stream->strf.auds, stream->extradata,
2211 stream->initdata, &codec_name, NULL);
2213 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
2214 G_TYPE_INT, stream->strf.auds->format, NULL);
2216 tag_name = GST_TAG_AUDIO_CODEC;
2217 avi->num_a_streams++;
2220 case GST_RIFF_FCC_iavs:{
2221 guint32 fourcc = stream->strh->fcc_handler;
2223 padname = g_strdup_printf ("video_%u", avi->num_v_streams);
2224 templ = gst_element_class_get_pad_template (klass, "video_%u");
2225 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
2226 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
2228 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2229 G_TYPE_INT, fourcc, NULL);
2231 tag_name = GST_TAG_VIDEO_CODEC;
2232 avi->num_v_streams++;
2235 case GST_RIFF_FCC_txts:{
2236 padname = g_strdup_printf ("subtitle_%u", avi->num_t_streams);
2237 templ = gst_element_class_get_pad_template (klass, "subtitle_%u");
2238 caps = gst_caps_new_empty_simple ("application/x-subtitle-avi");
2240 avi->num_t_streams++;
2244 g_return_val_if_reached (FALSE);
2247 /* no caps means no stream */
2249 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
2253 GST_DEBUG_OBJECT (element, "codec-name=%s",
2254 (codec_name ? codec_name : "NULL"));
2255 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
2257 /* set proper settings and add it */
2259 gst_object_unref (stream->pad);
2260 pad = stream->pad = gst_pad_new_from_template (templ, padname);
2263 gst_pad_use_fixed_caps (pad);
2265 gst_pad_set_formats_function (pad,
2266 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
2267 gst_pad_set_event_mask_function (pad,
2268 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
2270 gst_pad_set_event_function (pad,
2271 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
2272 gst_pad_set_query_function (pad,
2273 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
2275 gst_pad_set_convert_function (pad,
2276 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
2279 stream->num = avi->num_streams;
2281 stream->start_entry = 0;
2282 stream->step_entry = 0;
2283 stream->stop_entry = 0;
2285 stream->current_entry = -1;
2286 stream->current_total = 0;
2288 stream->last_flow = GST_FLOW_OK;
2289 stream->discont = TRUE;
2291 stream->total_bytes = 0;
2292 stream->total_blocks = 0;
2293 stream->n_keyframes = 0;
2296 stream->idx_max = 0;
2298 gst_pad_set_element_private (pad, stream);
2301 gst_pad_set_active (pad, TRUE);
2302 gst_pad_push_event (pad, gst_event_new_stream_start ());
2303 gst_pad_set_caps (pad, caps);
2304 gst_caps_unref (caps);
2308 if (!stream->taglist)
2309 stream->taglist = gst_tag_list_new_empty ();
2311 avi->got_tags = TRUE;
2313 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
2315 g_free (codec_name);
2318 gst_buffer_unref (buf);
2325 /* unref any mem that may be in use */
2327 gst_buffer_unref (buf);
2329 gst_buffer_unref (sub);
2331 g_free (codec_name);
2332 gst_avi_demux_reset_stream (avi, stream);
2339 * gst_avi_demux_parse_odml:
2340 * @avi: calling element (used for debug/error).
2341 * @buf: input buffer to be used for parsing.
2343 * Read an openDML-2.0 extension header. Fills in the frame number
2344 * in the avi demuxer object when reading succeeds.
2347 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
2351 GstBuffer *sub = NULL;
2353 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2356 case GST_RIFF_TAG_dmlh:{
2357 gst_riff_dmlh dmlh, *_dmlh;
2360 /* sub == NULL is possible and means an empty buffer */
2364 gst_buffer_map (sub, &map, GST_MAP_READ);
2367 if (map.size < sizeof (gst_riff_dmlh)) {
2368 GST_ERROR_OBJECT (avi,
2369 "DMLH entry is too small (%" G_GSIZE_FORMAT " bytes, %d needed)",
2370 map.size, (int) sizeof (gst_riff_dmlh));
2371 gst_buffer_unmap (sub, &map);
2374 _dmlh = (gst_riff_dmlh *) map.data;
2375 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
2376 gst_buffer_unmap (sub, &map);
2378 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
2381 avi->avih->tot_frames = dmlh.totalframes;
2386 GST_WARNING_OBJECT (avi,
2387 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
2388 GST_FOURCC_ARGS (tag));
2390 case GST_RIFF_TAG_JUNQ:
2391 case GST_RIFF_TAG_JUNK:
2393 /* skip and move to next chunk */
2395 gst_buffer_unref (sub);
2402 gst_buffer_unref (buf);
2407 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
2409 return stream->idx_n;
2412 /* find a previous entry in the index with the given flags */
2414 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
2415 guint last, gboolean keyframe)
2417 GstAviIndexEntry *entry;
2420 for (i = last; i > 0; i--) {
2421 entry = &stream->index[i - 1];
2422 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2430 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
2431 guint last, gboolean keyframe)
2433 GstAviIndexEntry *entry;
2436 for (i = last + 1; i < stream->idx_n; i++) {
2437 entry = &stream->index[i];
2438 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2442 return stream->idx_n - 1;
2446 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
2448 if (entry->total < *total)
2450 else if (entry->total > *total)
2456 * gst_avi_demux_index_for_time:
2458 * @stream: the stream
2459 * @time: a time position
2461 * Finds the index entry which time is less or equal than the requested time.
2462 * Try to avoid binary search when we can convert the time to an index
2463 * position directly (for example for video frames with a fixed duration).
2465 * Returns: the found position in the index.
2468 gst_avi_demux_index_for_time (GstAviDemux * avi,
2469 GstAviStream * stream, guint64 time)
2474 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
2476 /* easy (and common) cases */
2477 if (time == 0 || stream->idx_n == 0)
2479 if (time >= stream->idx_duration)
2480 return stream->idx_n - 1;
2482 /* figure out where we need to go. For that we convert the time to an
2483 * index entry or we convert it to a total and then do a binary search. */
2484 if (stream->is_vbr) {
2485 /* VBR stream next timestamp */
2486 if (stream->strh->type == GST_RIFF_FCC_auds) {
2487 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
2489 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
2492 /* constant rate stream */
2493 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
2497 GstAviIndexEntry *entry;
2499 /* no index, find index with binary search on total */
2500 GST_LOG_OBJECT (avi, "binary search for entry with total %"
2501 G_GUINT64_FORMAT, total);
2503 entry = gst_util_array_binary_search (stream->index,
2504 stream->idx_n, sizeof (GstAviIndexEntry),
2505 (GCompareDataFunc) gst_avi_demux_index_entry_search,
2506 GST_SEARCH_MODE_BEFORE, &total, NULL);
2508 if (entry == NULL) {
2509 GST_LOG_OBJECT (avi, "not found, assume index 0");
2512 index = entry - stream->index;
2513 GST_LOG_OBJECT (avi, "found at %u", index);
2516 GST_LOG_OBJECT (avi, "converted time to index %u", index);
2522 static inline GstAviStream *
2523 gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
2526 GstAviStream *stream;
2528 /* get the stream for this entry */
2529 stream_nr = CHUNKID_TO_STREAMNR (id);
2530 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2531 GST_WARNING_OBJECT (avi, "invalid stream nr %d", stream_nr);
2534 stream = &avi->stream[stream_nr];
2535 if (G_UNLIKELY (!stream->strh)) {
2536 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2543 * gst_avi_demux_parse_index:
2544 * @avi: calling element (used for debugging/errors).
2545 * @buf: buffer containing the full index.
2547 * Read index entries from the provided buffer.
2548 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2551 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2555 gst_riff_index_entry *index;
2557 GstAviStream *stream;
2558 GstAviIndexEntry entry;
2564 gst_buffer_map (buf, &map, GST_MAP_READ);
2566 stamp = gst_util_get_timestamp ();
2568 /* see how many items in the index */
2569 num = map.size / sizeof (gst_riff_index_entry);
2573 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2575 index = (gst_riff_index_entry *) map.data;
2577 /* figure out if the index is 0 based or relative to the MOVI start */
2578 entry.offset = GST_READ_UINT32_LE (&index[0].offset);
2579 if (entry.offset < avi->offset) {
2580 avi->index_offset = avi->offset + 8;
2581 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2583 avi->index_offset = 0;
2584 GST_DEBUG ("index is 0 based");
2587 for (i = 0, n = 0; i < num; i++) {
2588 id = GST_READ_UINT32_LE (&index[i].id);
2589 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2591 /* some sanity checks */
2592 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2593 (entry.offset == 0 && n > 0)))
2596 /* get the stream for this entry */
2597 stream = gst_avi_demux_stream_for_id (avi, id);
2598 if (G_UNLIKELY (!stream))
2601 /* handle offset and size */
2602 entry.offset += avi->index_offset + 8;
2603 entry.size = GST_READ_UINT32_LE (&index[i].size);
2606 if (stream->strh->type == GST_RIFF_FCC_auds) {
2607 /* all audio frames are keyframes */
2608 ENTRY_SET_KEYFRAME (&entry);
2611 /* else read flags */
2612 flags = GST_READ_UINT32_LE (&index[i].flags);
2613 if (flags & GST_RIFF_IF_KEYFRAME) {
2614 ENTRY_SET_KEYFRAME (&entry);
2616 ENTRY_UNSET_KEYFRAME (&entry);
2621 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2626 gst_buffer_unmap (buf, &map);
2627 gst_buffer_unref (buf);
2629 /* get stream stats now */
2630 avi->have_index = gst_avi_demux_do_index_stats (avi);
2632 stamp = gst_util_get_timestamp () - stamp;
2633 GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT,
2634 GST_TIME_ARGS (stamp));
2641 GST_DEBUG_OBJECT (avi, "empty index");
2642 gst_buffer_unmap (buf, &map);
2643 gst_buffer_unref (buf);
2648 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2649 ("Cannot allocate memory for %u*%u=%u bytes",
2650 (guint) sizeof (GstAviIndexEntry), num,
2651 (guint) sizeof (GstAviIndexEntry) * num));
2652 gst_buffer_unmap (buf, &map);
2653 gst_buffer_unref (buf);
2659 * gst_avi_demux_stream_index:
2660 * @avi: avi demuxer object.
2662 * Seeks to index and reads it.
2665 gst_avi_demux_stream_index (GstAviDemux * avi)
2668 guint64 offset = avi->offset;
2669 GstBuffer *buf = NULL;
2674 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2676 /* get chunk information */
2677 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2678 if (res != GST_FLOW_OK)
2681 gst_buffer_map (buf, &map, GST_MAP_READ);
2685 /* check tag first before blindy trying to read 'size' bytes */
2686 tag = GST_READ_UINT32_LE (map.data);
2687 size = GST_READ_UINT32_LE (map.data + 4);
2688 if (tag == GST_RIFF_TAG_LIST) {
2689 /* this is the movi tag */
2690 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2691 (8 + GST_ROUND_UP_2 (size)));
2692 offset += 8 + GST_ROUND_UP_2 (size);
2693 gst_buffer_unmap (buf, &map);
2694 gst_buffer_unref (buf);
2697 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2698 if (res != GST_FLOW_OK)
2701 gst_buffer_map (buf, &map, GST_MAP_READ);
2705 tag = GST_READ_UINT32_LE (map.data);
2706 size = GST_READ_UINT32_LE (map.data + 4);
2708 gst_buffer_unmap (buf, &map);
2709 gst_buffer_unref (buf);
2711 if (tag != GST_RIFF_TAG_idx1)
2716 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2718 /* read chunk, advance offset */
2719 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2720 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2723 GST_DEBUG ("will parse index chunk size %" G_GSIZE_FORMAT " for tag %"
2724 GST_FOURCC_FORMAT, gst_buffer_get_size (buf), GST_FOURCC_ARGS (tag));
2726 gst_avi_demux_parse_index (avi, buf);
2728 #ifndef GST_DISABLE_GST_DEBUG
2729 /* debug our indexes */
2732 GstAviStream *stream;
2734 for (i = 0; i < avi->num_streams; i++) {
2735 stream = &avi->stream[i];
2736 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2737 i, stream->idx_n, stream->total_bytes);
2746 GST_DEBUG_OBJECT (avi,
2747 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2752 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2753 gst_buffer_unmap (buf, &map);
2754 gst_buffer_unref (buf);
2759 GST_WARNING_OBJECT (avi,
2760 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2761 GST_FOURCC_ARGS (tag));
2766 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2772 * gst_avi_demux_stream_index_push:
2773 * @avi: avi demuxer object.
2778 gst_avi_demux_stream_index_push (GstAviDemux * avi)
2780 guint64 offset = avi->idx1_offset;
2785 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2787 /* get chunk information */
2788 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
2791 /* check tag first before blindly trying to read 'size' bytes */
2792 if (tag == GST_RIFF_TAG_LIST) {
2793 /* this is the movi tag */
2794 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2795 (8 + GST_ROUND_UP_2 (size)));
2796 avi->idx1_offset = offset + 8 + GST_ROUND_UP_2 (size);
2797 /* issue seek to allow chain function to handle it and return! */
2798 perform_seek_to_offset (avi, avi->idx1_offset);
2802 if (tag != GST_RIFF_TAG_idx1)
2805 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2807 /* flush chunk header */
2808 gst_adapter_flush (avi->adapter, 8);
2809 /* read chunk payload */
2810 buf = gst_adapter_take_buffer (avi->adapter, size);
2813 /* advance offset */
2814 offset += 8 + GST_ROUND_UP_2 (size);
2816 GST_DEBUG ("will parse index chunk size %" G_GSIZE_FORMAT " for tag %"
2817 GST_FOURCC_FORMAT, gst_buffer_get_size (buf), GST_FOURCC_ARGS (tag));
2819 avi->offset = avi->first_movi_offset;
2820 gst_avi_demux_parse_index (avi, buf);
2822 #ifndef GST_DISABLE_GST_DEBUG
2823 /* debug our indexes */
2826 GstAviStream *stream;
2828 for (i = 0; i < avi->num_streams; i++) {
2829 stream = &avi->stream[i];
2830 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2831 i, stream->idx_n, stream->total_bytes);
2840 GST_DEBUG_OBJECT (avi,
2841 "taking data from adapter failed: pos=%" G_GUINT64_FORMAT " size=%u",
2847 GST_WARNING_OBJECT (avi,
2848 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2849 GST_FOURCC_ARGS (tag));
2855 * gst_avi_demux_peek_tag:
2857 * Returns the tag and size of the next chunk
2859 static GstFlowReturn
2860 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2863 GstFlowReturn res = GST_FLOW_OK;
2864 GstBuffer *buf = NULL;
2867 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2868 if (res != GST_FLOW_OK)
2871 gst_buffer_map (buf, &map, GST_MAP_READ);
2875 *tag = GST_READ_UINT32_LE (map.data);
2876 *size = GST_READ_UINT32_LE (map.data + 4);
2878 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2879 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2880 *size, offset + 8, offset + 8 + (gint64) * size);
2883 gst_buffer_unmap (buf, &map);
2884 gst_buffer_unref (buf);
2891 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2896 GST_DEBUG_OBJECT (avi, "got %" G_GSIZE_FORMAT " bytes which is <> 8 bytes",
2898 res = GST_FLOW_ERROR;
2904 * gst_avi_demux_next_data_buffer:
2906 * Returns the offset and size of the next buffer
2907 * Position is the position of the buffer (after tag and size)
2909 static GstFlowReturn
2910 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2911 guint32 * tag, guint * size)
2913 guint64 off = *offset;
2918 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2919 if (res != GST_FLOW_OK)
2921 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2922 off += 8 + 4; /* skip tag + size + subtag */
2934 * gst_avi_demux_stream_scan:
2935 * @avi: calling element (used for debugging/errors).
2937 * Scan the file for all chunks to "create" a new index.
2941 gst_avi_demux_stream_scan (GstAviDemux * avi)
2944 GstAviStream *stream;
2952 * - implement non-seekable source support.
2954 GST_DEBUG_OBJECT (avi, "Creating index");
2956 /* get the size of the file */
2957 if (!gst_pad_peer_query_duration (avi->sinkpad, GST_FORMAT_BYTES, &tmplength))
2961 /* guess the total amount of entries we expect */
2965 GstAviIndexEntry entry;
2968 /* start reading data buffers to find the id and offset */
2969 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2970 if (G_UNLIKELY (res != GST_FLOW_OK))
2974 stream = gst_avi_demux_stream_for_id (avi, tag);
2975 if (G_UNLIKELY (!stream))
2978 /* we can't figure out the keyframes, assume they all are */
2979 entry.flags = GST_AVI_KEYFRAME;
2983 /* and add to the index of this stream */
2984 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2988 /* update position */
2989 pos += GST_ROUND_UP_2 (size);
2990 if (G_UNLIKELY (pos > length)) {
2991 GST_WARNING_OBJECT (avi,
2992 "Stopping index lookup since we are further than EOF");
2998 avi->have_index = gst_avi_demux_do_index_stats (avi);
3005 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
3006 ("Cannot allocate memory for %u*%u=%u bytes",
3007 (guint) sizeof (GstAviIndexEntry), num,
3008 (guint) sizeof (GstAviIndexEntry) * num));
3014 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
3018 GstAviStream *stream;
3020 total = GST_CLOCK_TIME_NONE;
3022 /* all streams start at a timestamp 0 */
3023 for (i = 0; i < avi->num_streams; i++) {
3024 GstClockTime duration, hduration;
3025 gst_riff_strh *strh;
3027 stream = &avi->stream[i];
3028 if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh)))
3031 /* get header duration for the stream */
3032 hduration = stream->hdr_duration;
3033 /* index duration calculated during parsing */
3034 duration = stream->idx_duration;
3036 /* now pick a good duration */
3037 if (GST_CLOCK_TIME_IS_VALID (duration)) {
3038 /* index gave valid duration, use that */
3039 GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT,
3040 stream, GST_TIME_ARGS (duration));
3042 /* fall back to header info to calculate a duration */
3043 duration = hduration;
3045 GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT,
3046 i, GST_TIME_ARGS (duration));
3047 /* set duration for the stream */
3048 stream->duration = duration;
3050 /* find total duration */
3051 if (total == GST_CLOCK_TIME_NONE ||
3052 (GST_CLOCK_TIME_IS_VALID (duration) && duration > total))
3056 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
3057 /* now update the duration for those streams where we had none */
3058 for (i = 0; i < avi->num_streams; i++) {
3059 stream = &avi->stream[i];
3061 if (!GST_CLOCK_TIME_IS_VALID (stream->duration)
3062 || stream->duration == 0) {
3063 stream->duration = total;
3065 GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT,
3066 stream, GST_TIME_ARGS (total));
3071 /* and set the total duration in the segment. */
3072 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
3073 GST_TIME_ARGS (total));
3075 avi->segment.duration = total;
3078 /* returns FALSE if there are no pads to deliver event to,
3079 * otherwise TRUE (whatever the outcome of event sending),
3080 * takes ownership of the event. */
3082 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
3084 gboolean result = FALSE;
3087 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
3088 GST_EVENT_TYPE_NAME (event), avi->num_streams);
3090 for (i = 0; i < avi->num_streams; i++) {
3091 GstAviStream *stream = &avi->stream[i];
3095 gst_pad_push_event (stream->pad, gst_event_ref (event));
3098 gst_event_unref (event);
3103 gst_avi_demux_check_seekability (GstAviDemux * avi)
3106 gboolean seekable = FALSE;
3107 gint64 start = -1, stop = -1;
3109 query = gst_query_new_seeking (GST_FORMAT_BYTES);
3110 if (!gst_pad_peer_query (avi->sinkpad, query)) {
3111 GST_DEBUG_OBJECT (avi, "seeking query failed");
3115 gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
3117 /* try harder to query upstream size if we didn't get it the first time */
3118 if (seekable && stop == -1) {
3119 GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
3120 gst_pad_peer_query_duration (avi->sinkpad, GST_FORMAT_BYTES, &stop);
3123 /* if upstream doesn't know the size, it's likely that it's not seekable in
3124 * practice even if it technically may be seekable */
3125 if (seekable && (start != 0 || stop <= start)) {
3126 GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
3131 GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
3132 G_GUINT64_FORMAT ")", seekable, start, stop);
3133 avi->seekable = seekable;
3135 gst_query_unref (query);
3139 * Read AVI headers when streaming
3141 static GstFlowReturn
3142 gst_avi_demux_stream_header_push (GstAviDemux * avi)
3144 GstFlowReturn ret = GST_FLOW_OK;
3149 GstBuffer *buf = NULL, *sub = NULL;
3152 GstTagList *tags = NULL;
3155 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
3157 switch (avi->header_state) {
3158 case GST_AVI_DEMUX_HEADER_TAG_LIST:
3159 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3160 avi->offset += 8 + GST_ROUND_UP_2 (size);
3161 if (tag != GST_RIFF_TAG_LIST)
3162 goto header_no_list;
3164 gst_adapter_flush (avi->adapter, 8);
3165 /* Find the 'hdrl' LIST tag */
3166 GST_DEBUG ("Reading %d bytes", size);
3167 buf = gst_adapter_take_buffer (avi->adapter, size);
3169 gst_buffer_extract (buf, 0, fourcc, 4);
3171 if (GST_READ_UINT32_LE (fourcc) != GST_RIFF_LIST_hdrl)
3172 goto header_no_hdrl;
3176 gst_adapter_flush (avi->adapter, 1);
3178 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
3180 gst_avi_demux_roundup_list (avi, &buf);
3182 /* the hdrl starts with a 'avih' header */
3183 if (!gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3185 goto header_no_avih;
3187 if (tag != GST_RIFF_TAG_avih)
3188 goto header_no_avih;
3190 if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3191 goto header_wrong_avih;
3193 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
3195 /* now, read the elements from the header until the end */
3196 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3198 /* sub can be NULL on empty tags */
3203 case GST_RIFF_TAG_LIST:
3204 if (gst_buffer_get_size (sub) < 4)
3207 gst_buffer_extract (sub, 0, fourcc, 4);
3209 switch (GST_READ_UINT32_LE (fourcc)) {
3210 case GST_RIFF_LIST_strl:
3211 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3213 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3214 ("failed to parse stream, ignoring"));
3219 case GST_RIFF_LIST_odml:
3220 gst_avi_demux_parse_odml (avi, sub);
3224 GST_WARNING_OBJECT (avi,
3225 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3226 GST_FOURCC_ARGS (GST_READ_UINT32_LE (fourcc)));
3228 case GST_RIFF_TAG_JUNQ:
3229 case GST_RIFF_TAG_JUNK:
3234 gst_avi_demux_parse_idit (avi, sub);
3237 GST_WARNING_OBJECT (avi,
3238 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
3239 offset, GST_FOURCC_ARGS (tag));
3241 case GST_RIFF_TAG_JUNQ:
3242 case GST_RIFF_TAG_JUNK:
3244 /* move to next chunk */
3246 gst_buffer_unref (sub);
3251 gst_buffer_unref (buf);
3252 GST_DEBUG ("elements parsed");
3254 /* check parsed streams */
3255 if (avi->num_streams == 0) {
3257 } else if (avi->num_streams != avi->avih->streams) {
3258 GST_WARNING_OBJECT (avi,
3259 "Stream header mentioned %d streams, but %d available",
3260 avi->avih->streams, avi->num_streams);
3262 GST_DEBUG ("Get junk and info next");
3263 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
3265 /* Need more data */
3269 case GST_AVI_DEMUX_HEADER_INFO:
3270 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
3272 if (gst_adapter_available (avi->adapter) < 12)
3275 data = gst_adapter_map (avi->adapter, 12);
3276 tag = GST_READ_UINT32_LE (data);
3277 size = GST_READ_UINT32_LE (data + 4);
3278 ltag = GST_READ_UINT32_LE (data + 8);
3279 gst_adapter_unmap (avi->adapter);
3281 if (tag == GST_RIFF_TAG_LIST) {
3283 case GST_RIFF_LIST_movi:
3284 gst_adapter_flush (avi->adapter, 12);
3285 if (!avi->first_movi_offset)
3286 avi->first_movi_offset = avi->offset;
3288 avi->idx1_offset = avi->offset + size - 4;
3290 case GST_RIFF_LIST_INFO:
3291 GST_DEBUG ("Found INFO chunk");
3292 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3293 GST_DEBUG ("got size %d", size);
3295 gst_adapter_flush (avi->adapter, 12);
3297 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
3300 gst_adapter_flush (avi->adapter, 1);
3301 gst_riff_parse_info (GST_ELEMENT_CAST (avi), buf, &tags);
3303 if (avi->globaltags) {
3304 gst_tag_list_insert (avi->globaltags, tags,
3305 GST_TAG_MERGE_REPLACE);
3307 avi->globaltags = tags;
3311 gst_buffer_unref (buf);
3313 avi->offset += GST_ROUND_UP_2 (size) - 4;
3315 GST_DEBUG ("skipping INFO LIST prefix");
3318 /* Need more data */
3323 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3324 avi->offset += 8 + GST_ROUND_UP_2 (size);
3325 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3326 // ??? goto iterate; ???
3328 /* Need more data */
3334 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3335 avi->offset += 8 + GST_ROUND_UP_2 (size);
3336 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3339 /* Need more data */
3346 GST_WARNING ("unhandled header state: %d", avi->header_state);
3351 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3352 avi->num_streams, avi->stream[0].indexes);
3354 GST_DEBUG ("Found movi chunk. Starting to stream data");
3355 avi->state = GST_AVI_DEMUX_MOVI;
3357 /* no indexes in push mode, but it still sets some variables */
3358 gst_avi_demux_calculate_durations_from_index (avi);
3360 gst_avi_demux_expose_streams (avi, TRUE);
3362 /* prepare all streams for index 0 */
3363 for (i = 0; i < avi->num_streams; i++)
3364 avi->stream[i].current_entry = 0;
3366 /* create initial NEWSEGMENT event */
3368 gst_event_unref (avi->seg_event);
3369 avi->seg_event = gst_event_new_segment (&avi->segment);
3371 gst_avi_demux_check_seekability (avi);
3373 /* at this point we know all the streams and we can signal the no more
3375 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3376 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3383 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3384 return GST_FLOW_ERROR;
3388 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3389 ("Invalid AVI header (no LIST at start): %"
3390 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3391 return GST_FLOW_ERROR;
3395 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3396 ("Invalid AVI header (no hdrl at start): %"
3397 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3398 gst_buffer_unref (buf);
3399 return GST_FLOW_ERROR;
3403 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3404 ("Invalid AVI header (no avih at start): %"
3405 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3407 gst_buffer_unref (sub);
3409 gst_buffer_unref (buf);
3410 return GST_FLOW_ERROR;
3414 gst_buffer_unref (buf);
3415 return GST_FLOW_ERROR;
3420 gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d,
3421 gint h, gint min, gint s)
3426 date = g_date_new_dmy (d, m, y);
3427 if (!g_date_valid (date)) {
3429 GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
3434 dt = gst_date_time_new_local_time (y, m, d, h, min, s);
3436 if (avi->globaltags == NULL)
3437 avi->globaltags = gst_tag_list_new_empty ();
3439 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
3443 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE_TIME,
3445 gst_date_time_unref (dt);
3450 gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data)
3453 gint hr = 0, min = 0, sec = 0;
3456 GST_DEBUG ("data : '%s'", data);
3458 ret = sscanf (data, "%d:%d:%d %d:%d:%d", &y, &m, &d, &hr, &min, &sec);
3460 /* Attempt YYYY/MM/DD/ HH:MM variant (found in CASIO cameras) */
3461 ret = sscanf (data, "%04d/%02d/%02d/ %d:%d", &y, &m, &d, &hr, &min);
3463 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3467 gst_avi_demux_add_date_tag (avi, y, m, d, hr, min, sec);
3471 get_month_num (gchar * data, guint size)
3473 if (g_ascii_strncasecmp (data, "jan", 3) == 0) {
3475 } else if (g_ascii_strncasecmp (data, "feb", 3) == 0) {
3477 } else if (g_ascii_strncasecmp (data, "mar", 3) == 0) {
3479 } else if (g_ascii_strncasecmp (data, "apr", 3) == 0) {
3481 } else if (g_ascii_strncasecmp (data, "may", 3) == 0) {
3483 } else if (g_ascii_strncasecmp (data, "jun", 3) == 0) {
3485 } else if (g_ascii_strncasecmp (data, "jul", 3) == 0) {
3487 } else if (g_ascii_strncasecmp (data, "aug", 3) == 0) {
3489 } else if (g_ascii_strncasecmp (data, "sep", 3) == 0) {
3491 } else if (g_ascii_strncasecmp (data, "oct", 3) == 0) {
3493 } else if (g_ascii_strncasecmp (data, "nov", 3) == 0) {
3495 } else if (g_ascii_strncasecmp (data, "dec", 3) == 0) {
3503 gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data)
3505 gint year, month, day;
3506 gint hour, min, sec;
3511 ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour,
3514 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3517 month = get_month_num (monthstr, strlen (monthstr));
3518 gst_avi_demux_add_date_tag (avi, year, month, day, hour, min, sec);
3522 gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
3527 gchar *safedata = NULL;
3529 gst_buffer_map (buf, &map, GST_MAP_READ);
3532 * http://www.eden-foundation.org/products/code/film_date_stamp/index.html
3534 * This tag could be in one of the below formats
3535 * 2005:08:17 11:42:43
3536 * THU OCT 26 16:46:04 2006
3537 * Mon Mar 3 09:44:56 2008
3539 * FIXME: Our date tag doesn't include hours
3542 /* skip eventual initial whitespace */
3543 ptr = (gchar *) map.data;
3546 while (left > 0 && g_ascii_isspace (ptr[0])) {
3555 /* make a safe copy to add a \0 to the end of the string */
3556 safedata = g_strndup (ptr, left);
3558 /* test if the first char is a alpha or a number */
3559 if (g_ascii_isdigit (ptr[0])) {
3560 gst_avi_demux_parse_idit_nums_only (avi, safedata);
3563 } else if (g_ascii_isalpha (ptr[0])) {
3564 gst_avi_demux_parse_idit_text (avi, safedata);
3572 GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
3573 gst_buffer_unmap (buf, &map);
3577 * Read full AVI headers.
3579 static GstFlowReturn
3580 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3583 GstBuffer *buf, *sub = NULL;
3586 GstElement *element = GST_ELEMENT_CAST (avi);
3588 GstTagList *tags = NULL;
3591 stamp = gst_util_get_timestamp ();
3593 /* the header consists of a 'hdrl' LIST tag */
3594 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3595 if (res != GST_FLOW_OK)
3596 goto pull_range_failed;
3597 else if (tag != GST_RIFF_TAG_LIST)
3599 else if (gst_buffer_get_size (buf) < 4)
3602 GST_DEBUG_OBJECT (avi, "parsing headers");
3604 /* Find the 'hdrl' LIST tag */
3605 gst_buffer_extract (buf, 0, fourcc, 4);
3606 while (GST_READ_UINT32_LE (fourcc) != GST_RIFF_LIST_hdrl) {
3607 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3608 GST_FOURCC_ARGS (GST_READ_UINT32_LE (fourcc)));
3611 gst_buffer_unref (buf);
3613 /* read new chunk */
3614 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3615 if (res != GST_FLOW_OK)
3616 goto pull_range_failed;
3617 else if (tag != GST_RIFF_TAG_LIST)
3619 else if (gst_buffer_get_size (buf) < 4)
3621 gst_buffer_extract (buf, 0, fourcc, 4);
3624 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3626 gst_avi_demux_roundup_list (avi, &buf);
3628 /* the hdrl starts with a 'avih' header */
3629 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3631 else if (tag != GST_RIFF_TAG_avih)
3633 else if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3636 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3638 /* now, read the elements from the header until the end */
3639 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3642 /* sub can be NULL on empty tags */
3646 gst_buffer_map (sub, &map, GST_MAP_READ);
3649 case GST_RIFF_TAG_LIST:
3653 switch (GST_READ_UINT32_LE (map.data)) {
3654 case GST_RIFF_LIST_strl:
3655 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3656 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3657 ("failed to parse stream, ignoring"));
3662 case GST_RIFF_LIST_odml:
3663 gst_avi_demux_parse_odml (avi, sub);
3666 case GST_RIFF_LIST_INFO:
3667 gst_buffer_resize (sub, 4, -1);
3668 gst_riff_parse_info (element, sub, &tags);
3670 if (avi->globaltags) {
3671 gst_tag_list_insert (avi->globaltags, tags,
3672 GST_TAG_MERGE_REPLACE);
3674 avi->globaltags = tags;
3680 GST_WARNING_OBJECT (avi,
3681 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3682 GST_FOURCC_ARGS (GST_READ_UINT32_LE (map.data)));
3683 GST_MEMDUMP_OBJECT (avi, "Unknown list", map.data, map.size);
3685 case GST_RIFF_TAG_JUNQ:
3686 case GST_RIFF_TAG_JUNK:
3691 gst_avi_demux_parse_idit (avi, sub);
3694 GST_WARNING_OBJECT (avi,
3695 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3696 GST_FOURCC_ARGS (tag), offset);
3697 GST_MEMDUMP_OBJECT (avi, "Unknown tag", map.data, map.size);
3699 case GST_RIFF_TAG_JUNQ:
3700 case GST_RIFF_TAG_JUNK:
3703 gst_buffer_unmap (sub, &map);
3704 gst_buffer_unref (sub);
3710 gst_buffer_unref (buf);
3711 GST_DEBUG ("elements parsed");
3713 /* check parsed streams */
3714 if (avi->num_streams == 0)
3716 else if (avi->num_streams != avi->avih->streams) {
3717 GST_WARNING_OBJECT (avi,
3718 "Stream header mentioned %d streams, but %d available",
3719 avi->avih->streams, avi->num_streams);
3722 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3723 G_GUINT64_FORMAT, avi->offset);
3725 /* Now, find the data (i.e. skip all junk between header and data) */
3732 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3733 if (res != GST_FLOW_OK) {
3734 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3735 goto pull_range_failed;
3736 } else if (gst_buffer_get_size (buf) < 12) {
3737 GST_DEBUG_OBJECT (avi,
3738 "got %" G_GSIZE_FORMAT " bytes which is less than 12 bytes",
3739 gst_buffer_get_size (buf));
3740 gst_buffer_unref (buf);
3741 return GST_FLOW_ERROR;
3744 gst_buffer_map (buf, &map, GST_MAP_READ);
3745 tag = GST_READ_UINT32_LE (map.data);
3746 size = GST_READ_UINT32_LE (map.data + 4);
3747 ltag = GST_READ_UINT32_LE (map.data + 8);
3749 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3750 GST_FOURCC_ARGS (tag), size);
3751 GST_MEMDUMP ("Tag content", map.data, map.size);
3752 gst_buffer_unmap (buf, &map);
3753 gst_buffer_unref (buf);
3756 case GST_RIFF_TAG_LIST:{
3758 case GST_RIFF_LIST_movi:
3759 GST_DEBUG_OBJECT (avi,
3760 "Reached the 'movi' tag, we're done with skipping");
3762 case GST_RIFF_LIST_INFO:
3764 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3766 if (res != GST_FLOW_OK) {
3767 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3768 goto pull_range_failed;
3770 GST_DEBUG ("got size %" G_GSIZE_FORMAT, gst_buffer_get_size (buf));
3772 GST_DEBUG ("skipping INFO LIST prefix");
3773 avi->offset += (4 - GST_ROUND_UP_2 (size));
3774 gst_buffer_unref (buf);
3778 sub = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, 4, -1);
3779 gst_riff_parse_info (element, sub, &tags);
3781 if (avi->globaltags) {
3782 gst_tag_list_insert (avi->globaltags, tags,
3783 GST_TAG_MERGE_REPLACE);
3785 avi->globaltags = tags;
3790 gst_buffer_unref (sub);
3793 gst_buffer_unref (buf);
3794 /* gst_riff_read_chunk() has already advanced avi->offset */
3797 GST_WARNING_OBJECT (avi,
3798 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3799 GST_FOURCC_ARGS (ltag));
3800 avi->offset += 8 + GST_ROUND_UP_2 (size);
3806 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3807 GST_FOURCC_ARGS (tag));
3809 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3810 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3811 /* Only get buffer for debugging if the memdump is needed */
3812 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
3814 res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf);
3815 if (res != GST_FLOW_OK) {
3816 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3817 goto pull_range_failed;
3819 gst_buffer_map (buf, &map, GST_MAP_READ);
3820 GST_MEMDUMP ("Junk", map.data, map.size);
3821 gst_buffer_unmap (buf, &map);
3822 gst_buffer_unref (buf);
3824 avi->offset += 8 + GST_ROUND_UP_2 (size);
3830 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3831 avi->num_streams, avi->stream[0].indexes);
3833 /* create or read stream index (for seeking) */
3834 if (avi->stream[0].indexes != NULL) {
3835 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3836 gst_avi_demux_read_subindexes_pull (avi);
3838 if (!avi->have_index) {
3839 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
3840 gst_avi_demux_stream_index (avi);
3842 /* still no index, scan */
3843 if (!avi->have_index) {
3844 gst_avi_demux_stream_scan (avi);
3846 /* still no index.. this is a fatal error for now.
3847 * FIXME, we should switch to plain push mode without seeking
3848 * instead of failing. */
3849 if (!avi->have_index)
3853 /* use the indexes now to construct nice durations */
3854 gst_avi_demux_calculate_durations_from_index (avi);
3856 gst_avi_demux_expose_streams (avi, FALSE);
3858 /* do initial seek to the default segment values */
3859 gst_avi_demux_do_seek (avi, &avi->segment);
3861 /* create initial NEWSEGMENT event */
3863 gst_event_unref (avi->seg_event);
3864 avi->seg_event = gst_event_new_segment (&avi->segment);
3866 stamp = gst_util_get_timestamp () - stamp;
3867 GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT,
3868 GST_TIME_ARGS (stamp));
3870 /* at this point we know all the streams and we can signal the no more
3872 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3873 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3880 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3881 ("Invalid AVI header (no LIST at start): %"
3882 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3883 gst_buffer_unref (buf);
3884 return GST_FLOW_ERROR;
3888 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3889 ("Invalid AVI header (no hdrl at start): %"
3890 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3891 gst_buffer_unref (buf);
3892 return GST_FLOW_ERROR;
3896 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3897 ("Invalid AVI header (no avih at start): %"
3898 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3900 gst_buffer_unref (sub);
3901 gst_buffer_unref (buf);
3902 return GST_FLOW_ERROR;
3906 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3907 ("Invalid AVI header (cannot parse avih at start)"));
3908 gst_buffer_unref (buf);
3909 return GST_FLOW_ERROR;
3913 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3914 return GST_FLOW_ERROR;
3918 GST_WARNING ("file without or too big index");
3919 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3920 ("Could not get/create index"));
3921 return GST_FLOW_ERROR;
3925 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3926 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3927 return GST_FLOW_ERROR;
3931 /* move a stream to @index */
3933 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
3934 GstSegment * segment, guint index)
3936 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
3938 if (segment->rate < 0.0) {
3940 /* Because we don't know the frame order we need to push from the prev keyframe
3941 * to the next keyframe. If there is a smart decoder downstream he will notice
3942 * that there are too many encoded frames send and return EOS when there
3943 * are enough decoded frames to fill the segment. */
3944 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
3946 /* FIXME, we go back to 0, we should look at segment.start. We will however
3947 * stop earlier when the see the timestamp < segment.start */
3948 stream->start_entry = 0;
3949 stream->step_entry = index;
3950 stream->current_entry = index;
3951 stream->stop_entry = next_key;
3953 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
3954 stream->start_entry, stream->step_entry, stream->stop_entry);
3956 stream->start_entry = index;
3957 stream->step_entry = index;
3958 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
3960 if (stream->current_entry != index) {
3961 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
3962 stream->current_entry, index);
3963 stream->current_entry = index;
3964 stream->discont = TRUE;
3967 /* update the buffer info */
3968 gst_avi_demux_get_buffer_info (avi, stream, index,
3969 &stream->current_timestamp, &stream->current_ts_end,
3970 &stream->current_offset, &stream->current_offset_end);
3972 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
3973 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3974 ", off_end %" G_GUINT64_FORMAT, index,
3975 GST_TIME_ARGS (stream->current_timestamp),
3976 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3977 stream->current_offset_end);
3979 GST_DEBUG_OBJECT (avi, "Seeking to offset %" G_GUINT64_FORMAT,
3980 stream->index[index].offset);
3984 * Do the actual seeking.
3987 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3989 GstClockTime seek_time;
3990 gboolean keyframe, before, after;
3992 GstAviStream *stream;
3994 seek_time = segment->position;
3995 keyframe = ! !(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3996 before = ! !(segment->flags & GST_SEEK_FLAG_SNAP_BEFORE);
3997 after = ! !(segment->flags & GST_SEEK_FLAG_SNAP_AFTER);
3999 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
4000 " keyframe seeking:%d, %s", GST_TIME_ARGS (seek_time), keyframe,
4001 snap_types[before ? 1 : 0][after ? 1 : 0]);
4003 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4004 * which is mostly correct... */
4005 stream = &avi->stream[avi->main_stream];
4007 /* get the entry index for the requested position */
4008 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
4009 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
4011 /* check if we are already on a keyframe */
4012 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4015 next = after && !before;
4016 if (segment->rate < 0)
4020 GST_DEBUG_OBJECT (avi, "not keyframe, searching forward");
4021 /* now go to the next keyframe, this is where we should start
4023 index = gst_avi_demux_index_next (avi, stream, index, TRUE);
4024 GST_DEBUG_OBJECT (avi, "next keyframe at %u", index);
4026 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
4027 /* now go to the previous keyframe, this is where we should start
4029 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4030 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
4034 /* move the main stream to this position */
4035 gst_avi_demux_move_stream (avi, stream, segment, index);
4038 /* when seeking to a keyframe, we update the result seek time
4039 * to the time of the keyframe. */
4040 seek_time = stream->current_timestamp;
4041 GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
4042 GST_TIME_ARGS (seek_time));
4045 /* the seek time is also the position and stream time when going
4047 segment->position = seek_time;
4048 if (segment->rate > 0.0)
4049 segment->time = seek_time;
4051 /* now set DISCONT and align the other streams */
4052 for (i = 0; i < avi->num_streams; i++) {
4053 GstAviStream *ostream;
4055 ostream = &avi->stream[i];
4056 if ((ostream == stream) || (ostream->index == NULL))
4059 /* get the entry index for the requested position */
4060 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
4062 /* move to previous keyframe */
4063 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
4064 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
4066 gst_avi_demux_move_stream (avi, ostream, segment, index);
4068 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
4069 GST_TIME_ARGS (seek_time));
4075 * Handle seek event in pull mode.
4078 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4083 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4087 GstSegment seeksegment = { 0, };
4091 GST_DEBUG_OBJECT (avi, "doing seek with event");
4093 gst_event_parse_seek (event, &rate, &format, &flags,
4094 &cur_type, &cur, &stop_type, &stop);
4096 /* we have to have a format as the segment format. Try to convert
4098 if (format != GST_FORMAT_TIME) {
4099 gboolean res = TRUE;
4101 if (cur_type != GST_SEEK_TYPE_NONE)
4102 res = gst_pad_query_convert (pad, format, cur, GST_FORMAT_TIME, &cur);
4103 if (res && stop_type != GST_SEEK_TYPE_NONE)
4104 res = gst_pad_query_convert (pad, format, stop, GST_FORMAT_TIME, &stop);
4108 format = GST_FORMAT_TIME;
4110 GST_DEBUG_OBJECT (avi,
4111 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
4112 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
4113 /* FIXME: can we do anything with rate!=1.0 */
4115 GST_DEBUG_OBJECT (avi, "doing seek without event");
4120 /* save flush flag */
4121 flush = flags & GST_SEEK_FLAG_FLUSH;
4124 GstEvent *fevent = gst_event_new_flush_start ();
4126 /* for a flushing seek, we send a flush_start on all pads. This will
4127 * eventually stop streaming with a WRONG_STATE. We can thus eventually
4128 * take the STREAM_LOCK. */
4129 GST_DEBUG_OBJECT (avi, "sending flush start");
4130 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4131 gst_pad_push_event (avi->sinkpad, fevent);
4133 /* a non-flushing seek, we PAUSE the task so that we can take the
4135 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
4136 gst_pad_pause_task (avi->sinkpad);
4139 /* wait for streaming to stop */
4140 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
4141 GST_PAD_STREAM_LOCK (avi->sinkpad);
4143 /* copy segment, we need this because we still need the old
4144 * segment when we close the current segment. */
4145 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4148 GST_DEBUG_OBJECT (avi, "configuring seek");
4149 gst_segment_do_seek (&seeksegment, rate, format, flags,
4150 cur_type, cur, stop_type, stop, &update);
4152 /* do the seek, seeksegment.position contains the new position, this
4153 * actually never fails. */
4154 gst_avi_demux_do_seek (avi, &seeksegment);
4157 GstEvent *fevent = gst_event_new_flush_stop (TRUE);
4159 GST_DEBUG_OBJECT (avi, "sending flush stop");
4160 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4161 gst_pad_push_event (avi->sinkpad, fevent);
4164 /* now update the real segment info */
4165 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
4167 /* post the SEGMENT_START message when we do segmented playback */
4168 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4169 gst_element_post_message (GST_ELEMENT_CAST (avi),
4170 gst_message_new_segment_start (GST_OBJECT_CAST (avi),
4171 avi->segment.format, avi->segment.position));
4174 /* queue the segment event for the streaming thread. */
4176 gst_event_unref (avi->seg_event);
4177 avi->seg_event = gst_event_new_segment (&avi->segment);
4179 if (!avi->streaming) {
4180 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4181 avi->sinkpad, NULL);
4183 /* reset the last flow and mark discont, seek is always DISCONT */
4184 for (i = 0; i < avi->num_streams; i++) {
4185 GST_DEBUG_OBJECT (avi, "marking DISCONT");
4186 avi->stream[i].last_flow = GST_FLOW_OK;
4187 avi->stream[i].discont = TRUE;
4189 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
4196 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4202 * Handle seek event in push mode.
4205 avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4210 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4212 gboolean keyframe, before, after;
4213 GstAviStream *stream;
4217 GstSegment seeksegment;
4220 /* check we have the index */
4221 if (!avi->have_index) {
4222 GST_DEBUG_OBJECT (avi, "no seek index built, seek aborted.");
4225 GST_DEBUG_OBJECT (avi, "doing push-based seek with event");
4228 gst_event_parse_seek (event, &rate, &format, &flags,
4229 &cur_type, &cur, &stop_type, &stop);
4231 if (format != GST_FORMAT_TIME) {
4232 gboolean res = TRUE;
4234 if (cur_type != GST_SEEK_TYPE_NONE)
4235 res = gst_pad_query_convert (pad, format, cur, GST_FORMAT_TIME, &cur);
4236 if (res && stop_type != GST_SEEK_TYPE_NONE)
4237 res = gst_pad_query_convert (pad, format, stop, GST_FORMAT_TIME, &stop);
4239 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4243 format = GST_FORMAT_TIME;
4246 /* let gst_segment handle any tricky stuff */
4247 GST_DEBUG_OBJECT (avi, "configuring seek");
4248 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4249 gst_segment_do_seek (&seeksegment, rate, format, flags,
4250 cur_type, cur, stop_type, stop, &update);
4252 keyframe = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
4253 cur = seeksegment.position;
4254 before = ! !(flags & GST_SEEK_FLAG_SNAP_BEFORE);
4255 after = ! !(flags & GST_SEEK_FLAG_SNAP_AFTER);
4257 GST_DEBUG_OBJECT (avi,
4258 "Seek requested: ts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
4259 ", kf %u, %s, rate %lf", GST_TIME_ARGS (cur), GST_TIME_ARGS (stop),
4260 keyframe, snap_types[before ? 1 : 0][after ? 1 : 0], rate);
4263 GST_DEBUG_OBJECT (avi, "negative rate seek not supported in push mode");
4267 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4268 * which is mostly correct... */
4269 str_num = avi->main_stream;
4270 stream = &avi->stream[str_num];
4272 /* get the entry index for the requested position */
4273 index = gst_avi_demux_index_for_time (avi, stream, cur);
4274 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT,
4275 str_num, index, GST_TIME_ARGS (cur));
4277 /* check if we are already on a keyframe */
4278 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4281 next = after && !before;
4282 if (seeksegment.rate < 0)
4286 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching forward");
4287 /* now go to the next keyframe, this is where we should start
4289 index = gst_avi_demux_index_next (avi, stream, index, TRUE);
4290 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index);
4292 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4293 /* now go to the previous keyframe, this is where we should start
4295 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4296 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index);
4300 gst_avi_demux_get_buffer_info (avi, stream, index,
4301 &stream->current_timestamp, &stream->current_ts_end,
4302 &stream->current_offset, &stream->current_offset_end);
4304 /* re-use cur to be the timestamp of the seek as it _will_ be */
4305 cur = stream->current_timestamp;
4307 min_offset = stream->index[index].offset;
4308 avi->seek_kf_offset = min_offset - 8;
4310 GST_DEBUG_OBJECT (avi,
4311 "Seek to: ts %" GST_TIME_FORMAT " (on str %u, idx %u, offset %"
4312 G_GUINT64_FORMAT ")", GST_TIME_ARGS (stream->current_timestamp), str_num,
4315 for (n = 0; n < avi->num_streams; n++) {
4316 GstAviStream *str = &avi->stream[n];
4319 if (n == avi->main_stream)
4322 /* get the entry index for the requested position */
4323 idx = gst_avi_demux_index_for_time (avi, str, cur);
4324 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT, n,
4325 idx, GST_TIME_ARGS (cur));
4327 /* check if we are already on a keyframe */
4328 if (!ENTRY_IS_KEYFRAME (&str->index[idx])) {
4329 if (after && !before) {
4330 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching forward");
4331 /* now go to the next keyframe, this is where we should start
4333 idx = gst_avi_demux_index_next (avi, str, idx, TRUE);
4334 GST_DEBUG_OBJECT (avi, "Found next keyframe at %u", idx);
4336 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4337 /* now go to the previous keyframe, this is where we should start
4339 idx = gst_avi_demux_index_prev (avi, str, idx, TRUE);
4340 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", idx);
4344 gst_avi_demux_get_buffer_info (avi, str, idx,
4345 &str->current_timestamp, &str->current_ts_end,
4346 &str->current_offset, &str->current_offset_end);
4348 if (str->index[idx].offset < min_offset) {
4349 min_offset = str->index[idx].offset;
4350 GST_DEBUG_OBJECT (avi,
4351 "Found an earlier offset at %" G_GUINT64_FORMAT ", str %u",
4359 GST_DEBUG_OBJECT (avi,
4360 "Seek performed: str %u, offset %" G_GUINT64_FORMAT ", idx %u, ts %"
4361 GST_TIME_FORMAT ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4362 ", off_end %" G_GUINT64_FORMAT, str_num, min_offset, index,
4363 GST_TIME_ARGS (stream->current_timestamp),
4364 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4365 stream->current_offset_end);
4367 /* index data refers to data, not chunk header (for pull mode convenience) */
4369 GST_DEBUG_OBJECT (avi, "seeking to chunk at offset %" G_GUINT64_FORMAT,
4372 if (!perform_seek_to_offset (avi, min_offset)) {
4373 GST_DEBUG_OBJECT (avi, "seek event failed!");
4381 * Handle whether we can perform the seek event or if we have to let the chain
4382 * function handle seeks to build the seek indexes first.
4385 gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
4388 /* check for having parsed index already */
4389 if (!avi->have_index) {
4391 gboolean building_index;
4393 GST_OBJECT_LOCK (avi);
4394 /* handle the seek event in the chain function */
4395 avi->state = GST_AVI_DEMUX_SEEK;
4397 /* copy the event */
4398 if (avi->seek_event)
4399 gst_event_unref (avi->seek_event);
4400 avi->seek_event = gst_event_ref (event);
4402 /* set the building_index flag so that only one thread can setup the
4403 * structures for index seeking. */
4404 building_index = avi->building_index;
4405 if (!building_index) {
4406 avi->building_index = TRUE;
4407 if (avi->stream[0].indexes) {
4408 avi->odml_stream = 0;
4409 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
4410 offset = avi->odml_subidxs[0];
4412 offset = avi->idx1_offset;
4415 GST_OBJECT_UNLOCK (avi);
4417 if (!building_index) {
4418 /* seek to the first subindex or legacy index */
4419 GST_INFO_OBJECT (avi,
4420 "Seeking to legacy index/first subindex at %" G_GUINT64_FORMAT,
4422 return perform_seek_to_offset (avi, offset);
4425 /* FIXME: we have to always return true so that we don't block the seek
4427 * Note: maybe it is OK to return true if we're still building the index */
4431 return avi_demux_handle_seek_push (avi, pad, event);
4435 * Helper for gst_avi_demux_invert()
4438 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
4440 memcpy (tmp, d1, bytes);
4441 memcpy (d1, d2, bytes);
4442 memcpy (d2, tmp, bytes);
4446 #define gst_avi_demux_is_uncompressed(fourcc) \
4448 (fourcc == GST_RIFF_DIB || \
4449 fourcc == GST_RIFF_rgb || \
4450 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW))
4453 * Invert DIB buffers... Takes existing buffer and
4454 * returns either the buffer or a new one (with old
4455 * one dereferenced).
4456 * FIXME: can't we preallocate tmp? and remember stride, bpp?
4459 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
4468 if (stream->strh->type != GST_RIFF_FCC_vids)
4471 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
4472 return buf; /* Ignore non DIB buffers */
4475 caps = gst_pad_get_current_caps (stream->pad);
4476 s = gst_caps_get_structure (caps, 0);
4477 gst_caps_unref (caps);
4479 if (!gst_structure_get_int (s, "bpp", &bpp)) {
4480 GST_WARNING ("Failed to retrieve depth from caps");
4484 if (stream->strf.vids == NULL) {
4485 GST_WARNING ("Failed to retrieve vids for stream");
4489 h = stream->strf.vids->height;
4490 w = stream->strf.vids->width;
4491 stride = GST_ROUND_UP_4 (w * (bpp / 8));
4493 buf = gst_buffer_make_writable (buf);
4495 gst_buffer_map (buf, &map, GST_MAP_READWRITE);
4496 if (map.size < (stride * h)) {
4497 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
4498 gst_buffer_unmap (buf, &map);
4502 tmp = g_malloc (stride);
4504 for (y = 0; y < h / 2; y++) {
4505 swap_line (map.data + stride * y, map.data + stride * (h - 1 - y), tmp,
4511 gst_buffer_unmap (buf, &map);
4518 gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
4519 GstClockTime timestamp, guint64 offset, gboolean keyframe)
4521 /* do not add indefinitely for open-ended streaming */
4522 if (G_UNLIKELY (avi->element_index && avi->seekable)) {
4523 GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
4524 G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
4525 gst_index_add_association (avi->element_index, avi->index_id,
4526 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT :
4527 GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp,
4528 GST_FORMAT_BYTES, offset, NULL);
4529 /* current_entry is DEFAULT (frame #) */
4530 gst_index_add_association (avi->element_index, stream->index_id,
4531 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT :
4532 GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp,
4533 GST_FORMAT_BYTES, offset, GST_FORMAT_DEFAULT, stream->current_entry,
4540 * Returns the aggregated GstFlowReturn.
4542 static GstFlowReturn
4543 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
4547 gboolean unexpected = FALSE, not_linked = TRUE;
4549 /* store the value */
4550 stream->last_flow = ret;
4552 /* any other error that is not-linked or eos can be returned right away */
4553 if (G_LIKELY (ret != GST_FLOW_EOS && ret != GST_FLOW_NOT_LINKED))
4556 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
4557 for (i = 0; i < avi->num_streams; i++) {
4558 GstAviStream *ostream = &avi->stream[i];
4560 ret = ostream->last_flow;
4561 /* no unexpected or unlinked, return */
4562 if (G_LIKELY (ret != GST_FLOW_EOS && ret != GST_FLOW_NOT_LINKED))
4565 /* we check to see if we have at least 1 unexpected or all unlinked */
4566 unexpected |= (ret == GST_FLOW_EOS);
4567 not_linked &= (ret == GST_FLOW_NOT_LINKED);
4569 /* when we get here, we all have unlinked or unexpected */
4571 ret = GST_FLOW_NOT_LINKED;
4572 else if (unexpected)
4575 GST_LOG_OBJECT (avi, "combined %s to return %s",
4576 gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret));
4580 /* move @stream to the next position in its index */
4581 static GstFlowReturn
4582 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
4585 guint old_entry, new_entry;
4587 old_entry = stream->current_entry;
4589 new_entry = old_entry + 1;
4591 /* see if we reached the end */
4592 if (new_entry >= stream->stop_entry) {
4593 if (avi->segment.rate < 0.0) {
4594 if (stream->step_entry == stream->start_entry) {
4595 /* we stepped all the way to the start, eos */
4596 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
4599 /* backwards, stop becomes step, find a new step */
4600 stream->stop_entry = stream->step_entry;
4601 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
4602 stream->stop_entry, TRUE);
4604 GST_DEBUG_OBJECT (avi,
4605 "reverse playback jump: start %u, step %u, stop %u",
4606 stream->start_entry, stream->step_entry, stream->stop_entry);
4608 /* and start from the previous keyframe now */
4609 new_entry = stream->step_entry;
4612 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
4617 if (new_entry != old_entry) {
4618 stream->current_entry = new_entry;
4619 stream->current_total = stream->index[new_entry].total;
4621 if (new_entry == old_entry + 1) {
4622 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
4623 old_entry, new_entry);
4624 /* we simply moved one step forwards, reuse current info */
4625 stream->current_timestamp = stream->current_ts_end;
4626 stream->current_offset = stream->current_offset_end;
4627 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4628 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
4630 /* we moved DISCONT, full update */
4631 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4632 &stream->current_timestamp, &stream->current_ts_end,
4633 &stream->current_offset, &stream->current_offset_end);
4634 /* and MARK discont for this stream */
4635 stream->last_flow = GST_FLOW_OK;
4636 stream->discont = TRUE;
4637 GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
4638 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4639 ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
4640 GST_TIME_ARGS (stream->current_timestamp),
4641 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4642 stream->current_offset_end);
4650 GST_DEBUG_OBJECT (avi, "we are EOS");
4651 /* setting current_timestamp to -1 marks EOS */
4652 stream->current_timestamp = -1;
4653 return GST_FLOW_EOS;
4657 /* find the stream with the lowest current position when going forwards or with
4658 * the highest position when going backwards, this is the stream
4659 * we should push from next */
4661 gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
4663 guint64 min_time, max_time;
4664 guint stream_num, i;
4667 min_time = G_MAXUINT64;
4670 for (i = 0; i < avi->num_streams; i++) {
4672 GstAviStream *stream;
4674 stream = &avi->stream[i];
4676 /* ignore streams that finished */
4677 if (stream->last_flow == GST_FLOW_EOS)
4680 position = stream->current_timestamp;
4682 /* position of -1 is EOS */
4683 if (position != -1) {
4684 if (rate > 0.0 && position < min_time) {
4685 min_time = position;
4687 } else if (rate < 0.0 && position >= max_time) {
4688 max_time = position;
4696 static GstFlowReturn
4697 gst_avi_demux_loop_data (GstAviDemux * avi)
4699 GstFlowReturn ret = GST_FLOW_OK;
4701 GstAviStream *stream;
4702 gboolean processed = FALSE;
4704 guint64 offset, size;
4705 GstClockTime timestamp, duration;
4706 guint64 out_offset, out_offset_end;
4708 GstAviIndexEntry *entry;
4711 stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
4714 if (G_UNLIKELY (stream_num == -1)) {
4715 GST_DEBUG_OBJECT (avi, "all streams are EOS");
4719 /* we have the stream now */
4720 stream = &avi->stream[stream_num];
4722 /* skip streams without pads */
4724 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
4729 /* get the timing info for the entry */
4730 timestamp = stream->current_timestamp;
4731 duration = stream->current_ts_end - timestamp;
4732 out_offset = stream->current_offset;
4733 out_offset_end = stream->current_offset_end;
4735 /* get the entry data info */
4736 entry = &stream->index[stream->current_entry];
4737 offset = entry->offset;
4739 keyframe = ENTRY_IS_KEYFRAME (entry);
4741 /* skip empty entries */
4743 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
4744 stream->current_entry, size, stream->pad);
4748 if (avi->segment.rate > 0.0) {
4749 /* only check this for fowards playback for now */
4750 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4751 && (timestamp > avi->segment.stop)) {
4756 GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
4757 G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
4758 stream_num, offset, offset, keyframe);
4760 /* FIXME, check large chunks and cut them up */
4762 /* pull in the data */
4764 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
4765 if (ret != GST_FLOW_OK)
4768 /* check for short buffers, this is EOS as well */
4769 if (gst_buffer_get_size (buf) < size)
4772 /* invert the picture if needed */
4773 buf = gst_avi_demux_invert (stream, buf);
4775 /* mark non-keyframes */
4777 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4778 GST_BUFFER_PTS (buf) = timestamp;
4780 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4781 GST_BUFFER_PTS (buf) = GST_CLOCK_TIME_NONE;
4783 GST_BUFFER_DTS (buf) = timestamp;
4784 GST_BUFFER_DURATION (buf) = duration;
4785 GST_BUFFER_OFFSET (buf) = out_offset;
4786 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
4788 /* mark discont when pending */
4789 if (stream->discont) {
4790 GST_DEBUG_OBJECT (avi, "setting DISCONT flag");
4791 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4792 stream->discont = FALSE;
4795 gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
4798 /* update current position in the segment */
4799 avi->segment.position = timestamp;
4801 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %" G_GSIZE_FORMAT ", ts %"
4802 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4803 ", off_end %" G_GUINT64_FORMAT,
4804 gst_buffer_get_size (buf), GST_TIME_ARGS (timestamp),
4805 GST_TIME_ARGS (duration), out_offset, out_offset_end);
4807 ret = gst_pad_push (stream->pad, buf);
4809 /* mark as processed, we increment the frame and byte counters then
4810 * leave the while loop and return the GstFlowReturn */
4813 if (avi->segment.rate < 0) {
4814 if (timestamp > avi->segment.stop && ret == GST_FLOW_EOS) {
4815 /* In reverse playback we can get a GST_FLOW_EOS when
4816 * we are at the end of the segment, so we just need to jump
4817 * back to the previous section. */
4818 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4823 /* move to next item */
4824 ret = gst_avi_demux_advance (avi, stream, ret);
4827 ret = gst_avi_demux_combine_flows (avi, stream, ret);
4828 } while (!processed);
4836 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
4842 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4843 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4844 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
4846 /* move to next stream */
4851 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
4852 " size=%" G_GUINT64_FORMAT, offset, size);
4857 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4858 ", only got %" G_GSIZE_FORMAT "/%" G_GUINT64_FORMAT
4859 " bytes (truncated file?)", offset, gst_buffer_get_size (buf), size);
4860 gst_buffer_unref (buf);
4867 * Read data. If we have an index it delegates to
4868 * gst_avi_demux_process_next_entry().
4870 static GstFlowReturn
4871 gst_avi_demux_stream_data (GstAviDemux * avi)
4876 GstFlowReturn res = GST_FLOW_OK;
4878 if (G_UNLIKELY (avi->have_eos)) {
4879 /* Clean adapter, we're done */
4880 gst_adapter_clear (avi->adapter);
4881 return GST_FLOW_EOS;
4884 if (G_UNLIKELY (avi->todrop)) {
4887 if ((drop = gst_adapter_available (avi->adapter))) {
4888 if (drop > avi->todrop)
4890 GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
4891 gst_adapter_flush (avi->adapter, drop);
4892 avi->todrop -= drop;
4893 avi->offset += drop;
4897 /* Iterate until need more data, so adapter won't grow too much */
4899 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4903 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4904 GST_FOURCC_ARGS (tag), size);
4906 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4907 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4908 GST_LOG ("Chunk ok");
4909 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4910 GST_DEBUG ("Found sub-index tag");
4911 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4912 /* accept 0 size buffer here */
4913 avi->abort_buffering = FALSE;
4914 GST_DEBUG (" skipping %d bytes for now", size);
4915 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4918 } else if (tag == GST_RIFF_TAG_RIFF) {
4919 /* RIFF tags can appear in ODML files, just jump over them */
4920 if (gst_adapter_available (avi->adapter) >= 12) {
4921 GST_DEBUG ("Found RIFF tag, skipping RIFF header");
4922 gst_adapter_flush (avi->adapter, 12);
4926 } else if (tag == GST_RIFF_TAG_idx1) {
4927 GST_DEBUG ("Found index tag");
4928 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4929 /* accept 0 size buffer here */
4930 avi->abort_buffering = FALSE;
4931 GST_DEBUG (" skipping %d bytes for now", size);
4932 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4935 } else if (tag == GST_RIFF_TAG_LIST) {
4936 /* movi chunks might be grouped in rec list */
4937 if (gst_adapter_available (avi->adapter) >= 12) {
4938 GST_DEBUG ("Found LIST tag, skipping LIST header");
4939 gst_adapter_flush (avi->adapter, 12);
4943 } else if (tag == GST_RIFF_TAG_JUNK || tag == GST_RIFF_TAG_JUNQ) {
4944 /* rec list might contain JUNK chunks */
4945 GST_DEBUG ("Found JUNK tag");
4946 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4947 /* accept 0 size buffer here */
4948 avi->abort_buffering = FALSE;
4949 GST_DEBUG (" skipping %d bytes for now", size);
4950 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4954 GST_DEBUG ("No more stream chunks, send EOS");
4955 avi->have_eos = TRUE;
4956 return GST_FLOW_EOS;
4959 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4960 /* supposedly one hopes to catch a nicer chunk later on ... */
4961 /* FIXME ?? give up here rather than possibly ending up going
4962 * through the whole file */
4963 if (avi->abort_buffering) {
4964 avi->abort_buffering = FALSE;
4966 gst_adapter_flush (avi->adapter, 8);
4973 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4974 GST_FOURCC_ARGS (tag), size);
4976 stream_nr = CHUNKID_TO_STREAMNR (tag);
4978 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4980 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4981 stream_nr, GST_FOURCC_ARGS (tag));
4982 avi->offset += 8 + GST_ROUND_UP_2 (size);
4983 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4985 GstAviStream *stream;
4986 GstClockTime next_ts = 0;
4987 GstBuffer *buf = NULL;
4991 gboolean saw_desired_kf = stream_nr != avi->main_stream
4992 || avi->offset >= avi->seek_kf_offset;
4994 if (stream_nr == avi->main_stream && avi->offset == avi->seek_kf_offset) {
4995 GST_DEBUG_OBJECT (avi, "Desired keyframe reached");
4996 avi->seek_kf_offset = 0;
4999 if (saw_desired_kf) {
5000 gst_adapter_flush (avi->adapter, 8);
5003 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
5004 /* patch the size */
5005 gst_buffer_resize (buf, 0, size);
5010 GST_DEBUG_OBJECT (avi,
5011 "Desired keyframe not yet reached, flushing chunk");
5012 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
5016 offset = avi->offset;
5018 avi->offset += 8 + GST_ROUND_UP_2 (size);
5020 stream = &avi->stream[stream_nr];
5022 /* set delay (if any)
5023 if (stream->strh->init_frames == stream->current_frame &&
5025 stream->delay = next_ts;
5028 /* parsing of corresponding header may have failed */
5029 if (G_UNLIKELY (!stream->pad)) {
5030 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
5031 GST_FOURCC_ARGS (tag));
5033 gst_buffer_unref (buf);
5035 /* get time of this buffer */
5036 gst_pad_query_position (stream->pad, GST_FORMAT_TIME,
5037 (gint64 *) & next_ts);
5040 gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
5043 /* increment our positions */
5044 stream->current_entry++;
5045 stream->current_total += size;
5047 /* update current position in the segment */
5048 avi->segment.position = next_ts;
5050 if (saw_desired_kf && buf) {
5051 GstClockTime dur_ts = 0;
5053 /* invert the picture if needed */
5054 buf = gst_avi_demux_invert (stream, buf);
5056 gst_pad_query_position (stream->pad, GST_FORMAT_TIME,
5057 (gint64 *) & dur_ts);
5059 GST_BUFFER_DTS (buf) = next_ts;
5060 GST_BUFFER_PTS (buf) = GST_CLOCK_TIME_NONE;
5061 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
5062 if (stream->strh->type == GST_RIFF_FCC_vids) {
5063 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
5064 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
5066 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
5067 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
5070 GST_DEBUG_OBJECT (avi,
5071 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
5072 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
5073 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
5074 GST_TIME_ARGS (GST_BUFFER_DURATION (buf)),
5075 GST_BUFFER_OFFSET (buf), size, GST_PAD_NAME (stream->pad));
5077 /* mark discont when pending */
5078 if (G_UNLIKELY (stream->discont)) {
5079 GST_DEBUG_OBJECT (avi, "Setting DISCONT");
5080 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
5081 stream->discont = FALSE;
5083 res = gst_pad_push (stream->pad, buf);
5087 res = gst_avi_demux_combine_flows (avi, stream, res);
5088 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5089 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
5101 * Send pending tags.
5104 push_tag_lists (GstAviDemux * avi)
5112 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
5114 for (i = 0; i < avi->num_streams; i++) {
5115 GstAviStream *stream = &avi->stream[i];
5116 GstPad *pad = stream->pad;
5118 tags = stream->taglist;
5121 GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
5123 gst_pad_push_event (pad, gst_event_new_tag ("GstDemuxer", tags));
5124 stream->taglist = NULL;
5128 if (!(tags = avi->globaltags))
5129 tags = gst_tag_list_new_empty ();
5131 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
5132 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
5134 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
5135 gst_avi_demux_push_event (avi, gst_event_new_tag ("GstDemuxer", tags));
5136 avi->globaltags = NULL;
5137 avi->got_tags = FALSE;
5141 gst_avi_demux_loop (GstPad * pad)
5144 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5146 switch (avi->state) {
5147 case GST_AVI_DEMUX_START:
5148 res = gst_avi_demux_stream_init_pull (avi);
5149 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5150 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5153 avi->state = GST_AVI_DEMUX_HEADER;
5155 case GST_AVI_DEMUX_HEADER:
5156 res = gst_avi_demux_stream_header_pull (avi);
5157 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5158 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5161 avi->state = GST_AVI_DEMUX_MOVI;
5163 case GST_AVI_DEMUX_MOVI:
5164 if (G_UNLIKELY (avi->seg_event)) {
5165 gst_avi_demux_push_event (avi, avi->seg_event);
5166 avi->seg_event = NULL;
5168 if (G_UNLIKELY (avi->got_tags)) {
5169 push_tag_lists (avi);
5171 /* process each index entry in turn */
5172 res = gst_avi_demux_loop_data (avi);
5174 /* pause when error */
5175 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5176 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
5181 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
5182 res = GST_FLOW_ERROR;
5191 gboolean push_eos = FALSE;
5192 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
5193 gst_pad_pause_task (avi->sinkpad);
5195 if (res == GST_FLOW_EOS) {
5196 /* handle end-of-stream/segment */
5197 /* so align our position with the end of it, if there is one
5198 * this ensures a subsequent will arrive at correct base/acc time */
5199 if (avi->segment.rate > 0.0 &&
5200 GST_CLOCK_TIME_IS_VALID (avi->segment.stop))
5201 avi->segment.position = avi->segment.stop;
5202 else if (avi->segment.rate < 0.0)
5203 avi->segment.position = avi->segment.start;
5204 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
5207 if ((stop = avi->segment.stop) == -1)
5208 stop = avi->segment.duration;
5210 GST_INFO_OBJECT (avi, "sending segment_done");
5212 gst_element_post_message
5213 (GST_ELEMENT_CAST (avi),
5214 gst_message_new_segment_done (GST_OBJECT_CAST (avi),
5215 GST_FORMAT_TIME, stop));
5216 gst_avi_demux_push_event (avi,
5217 gst_event_new_segment_done (GST_FORMAT_TIME, stop));
5221 } else if (res == GST_FLOW_NOT_LINKED || res < GST_FLOW_EOS) {
5222 /* for fatal errors we post an error message, wrong-state is
5223 * not fatal because it happens due to flushes and only means
5224 * that we should stop now. */
5225 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
5226 (_("Internal data stream error.")),
5227 ("streaming stopped, reason %s", gst_flow_get_name (res)));
5231 GST_INFO_OBJECT (avi, "sending eos");
5232 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
5233 (res == GST_FLOW_EOS)) {
5234 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
5235 (NULL), ("got eos but no streams (yet)"));
5242 static GstFlowReturn
5243 gst_avi_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
5246 GstAviDemux *avi = GST_AVI_DEMUX (parent);
5249 if (GST_BUFFER_IS_DISCONT (buf)) {
5250 GST_DEBUG_OBJECT (avi, "got DISCONT");
5251 gst_adapter_clear (avi->adapter);
5252 /* mark all streams DISCONT */
5253 for (i = 0; i < avi->num_streams; i++)
5254 avi->stream[i].discont = TRUE;
5257 GST_DEBUG ("Store %" G_GSIZE_FORMAT " bytes in adapter",
5258 gst_buffer_get_size (buf));
5259 gst_adapter_push (avi->adapter, buf);
5261 switch (avi->state) {
5262 case GST_AVI_DEMUX_START:
5263 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
5264 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5268 case GST_AVI_DEMUX_HEADER:
5269 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
5270 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5274 case GST_AVI_DEMUX_MOVI:
5275 if (G_UNLIKELY (avi->seg_event)) {
5276 gst_avi_demux_push_event (avi, avi->seg_event);
5277 avi->seg_event = NULL;
5279 if (G_UNLIKELY (avi->got_tags)) {
5280 push_tag_lists (avi);
5282 res = gst_avi_demux_stream_data (avi);
5284 case GST_AVI_DEMUX_SEEK:
5290 /* obtain and parse indexes */
5291 if (avi->stream[0].indexes && !gst_avi_demux_read_subindexes_push (avi))
5292 /* seek in subindex read function failed */
5295 if (!avi->stream[0].indexes && !avi->have_index
5296 && avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
5297 gst_avi_demux_stream_index_push (avi);
5299 if (avi->have_index) {
5300 /* use the indexes now to construct nice durations */
5301 gst_avi_demux_calculate_durations_from_index (avi);
5303 /* still parsing indexes */
5307 GST_OBJECT_LOCK (avi);
5308 event = avi->seek_event;
5309 avi->seek_event = NULL;
5310 GST_OBJECT_UNLOCK (avi);
5312 /* calculate and perform seek */
5313 if (!avi_demux_handle_seek_push (avi, avi->sinkpad, event))
5316 gst_event_unref (event);
5317 avi->state = GST_AVI_DEMUX_MOVI;
5321 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
5322 ("Illegal internal state"));
5323 res = GST_FLOW_ERROR;
5327 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
5328 gst_flow_get_name (res));
5330 if (G_UNLIKELY (avi->abort_buffering))
5331 goto abort_buffering;
5338 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("failed to read indexes"));
5339 return GST_FLOW_ERROR;
5343 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("push mode seek failed"));
5344 return GST_FLOW_ERROR;
5348 avi->abort_buffering = FALSE;
5349 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
5350 return GST_FLOW_ERROR;
5355 gst_avi_demux_sink_activate (GstPad * sinkpad, GstObject * parent)
5360 query = gst_query_new_scheduling ();
5362 if (!gst_pad_peer_query (sinkpad, query)) {
5363 gst_query_unref (query);
5367 pull_mode = gst_query_has_scheduling_mode (query, GST_PAD_MODE_PULL);
5368 gst_query_unref (query);
5373 GST_DEBUG_OBJECT (sinkpad, "activating pull");
5374 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
5378 GST_DEBUG_OBJECT (sinkpad, "activating push");
5379 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
5384 gst_avi_demux_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
5385 GstPadMode mode, gboolean active)
5388 GstAviDemux *avi = GST_AVI_DEMUX (parent);
5391 case GST_PAD_MODE_PULL:
5393 avi->streaming = FALSE;
5394 res = gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
5397 res = gst_pad_stop_task (sinkpad);
5400 case GST_PAD_MODE_PUSH:
5402 GST_DEBUG ("avi: activating push/chain function");
5403 avi->streaming = TRUE;
5405 GST_DEBUG ("avi: deactivating push/chain function");
5418 gst_avi_demux_set_index (GstElement * element, GstIndex * index)
5420 GstAviDemux *avi = GST_AVI_DEMUX (element);
5422 GST_OBJECT_LOCK (avi);
5423 if (avi->element_index)
5424 gst_object_unref (avi->element_index);
5426 avi->element_index = gst_object_ref (index);
5428 avi->element_index = NULL;
5430 GST_OBJECT_UNLOCK (avi);
5431 /* object lock might be taken again */
5433 gst_index_get_writer_id (index, GST_OBJECT_CAST (element), &avi->index_id);
5434 GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
5438 gst_avi_demux_get_index (GstElement * element)
5440 GstIndex *result = NULL;
5441 GstAviDemux *avi = GST_AVI_DEMUX (element);
5443 GST_OBJECT_LOCK (avi);
5444 if (avi->element_index)
5445 result = gst_object_ref (avi->element_index);
5446 GST_OBJECT_UNLOCK (avi);
5448 GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
5454 static GstStateChangeReturn
5455 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
5457 GstStateChangeReturn ret;
5458 GstAviDemux *avi = GST_AVI_DEMUX (element);
5460 switch (transition) {
5461 case GST_STATE_CHANGE_READY_TO_PAUSED:
5462 avi->streaming = FALSE;
5463 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
5469 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
5470 if (ret == GST_STATE_CHANGE_FAILURE)
5473 switch (transition) {
5474 case GST_STATE_CHANGE_PAUSED_TO_READY:
5475 avi->have_index = FALSE;
5476 gst_avi_demux_reset (avi);