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., 51 Franklin St, Fifth Floor,
19 * Boston, MA 02110-1301, 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-1.0 filesrc location=test.avi ! avidemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! videoconvert ! 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.
49 #include "gst/riff/riff-media.h"
50 #include "gstavidemux.h"
52 #include <gst/gst-i18n-plugin.h>
53 #include <gst/base/gstadapter.h>
54 #include <gst/tag/tag.h>
56 #define DIV_ROUND_UP(s,v) (((s) + ((v)-1)) / (v))
58 #define GST_AVI_KEYFRAME (1 << 0)
59 #define ENTRY_IS_KEYFRAME(e) ((e)->flags == GST_AVI_KEYFRAME)
60 #define ENTRY_SET_KEYFRAME(e) ((e)->flags = GST_AVI_KEYFRAME)
61 #define ENTRY_UNSET_KEYFRAME(e) ((e)->flags = 0)
64 GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
65 #define GST_CAT_DEFAULT avidemux_debug
67 static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
70 GST_STATIC_CAPS ("video/x-msvideo")
73 #ifndef GST_DISABLE_GST_DEBUG
74 static const char *const snap_types[2][2] = {
80 static void gst_avi_demux_finalize (GObject * object);
82 static void gst_avi_demux_reset (GstAviDemux * avi);
85 static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
87 static gboolean gst_avi_demux_handle_src_event (GstPad * pad,
88 GstObject * parent, GstEvent * event);
89 static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
90 GstObject * parent, GstEvent * event);
91 static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
94 static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
96 static gboolean gst_avi_demux_handle_src_query (GstPad * pad,
97 GstObject * parent, GstQuery * query);
98 static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
99 gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
101 static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
102 static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
104 static gboolean gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
106 static void gst_avi_demux_loop (GstPad * pad);
107 static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad,
109 static gboolean gst_avi_demux_sink_activate_mode (GstPad * sinkpad,
110 GstObject * parent, GstPadMode mode, gboolean active);
111 static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstObject * parent,
114 static void gst_avi_demux_set_index (GstElement * element, GstIndex * index);
115 static GstIndex *gst_avi_demux_get_index (GstElement * element);
117 static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
118 GstStateChange transition);
119 static void gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi);
120 static void gst_avi_demux_get_buffer_info (GstAviDemux * avi,
121 GstAviStream * stream, guint entry_n, GstClockTime * timestamp,
122 GstClockTime * ts_end, guint64 * offset, guint64 * offset_end);
124 static void gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf);
125 static void gst_avi_demux_parse_strd (GstAviDemux * avi, GstBuffer * buf);
127 /* GObject methods */
129 #define gst_avi_demux_parent_class parent_class
130 G_DEFINE_TYPE (GstAviDemux, gst_avi_demux, GST_TYPE_ELEMENT);
133 gst_avi_demux_class_init (GstAviDemuxClass * klass)
135 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
136 GObjectClass *gobject_class = (GObjectClass *) klass;
137 GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl, *subpicsrctempl;
138 GstCaps *audcaps, *vidcaps, *subcaps, *subpiccaps;;
140 GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
141 0, "Demuxer for AVI streams");
143 gobject_class->finalize = gst_avi_demux_finalize;
145 gstelement_class->change_state =
146 GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
148 gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_avi_demux_set_index);
149 gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_avi_demux_get_index);
152 audcaps = gst_riff_create_audio_template_caps ();
153 gst_caps_append (audcaps, gst_caps_new_empty_simple ("audio/x-avi-unknown"));
154 audiosrctempl = gst_pad_template_new ("audio_%u",
155 GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
157 vidcaps = gst_riff_create_video_template_caps ();
158 gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
159 gst_caps_append (vidcaps, gst_caps_new_empty_simple ("video/x-avi-unknown"));
160 videosrctempl = gst_pad_template_new ("video_%u",
161 GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
163 subcaps = gst_caps_new_empty_simple ("application/x-subtitle-avi");
164 subsrctempl = gst_pad_template_new ("subtitle_%u",
165 GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
166 subpiccaps = gst_caps_new_empty_simple ("subpicture/x-xsub");
167 subpicsrctempl = gst_pad_template_new ("subpicture_%u",
168 GST_PAD_SRC, GST_PAD_SOMETIMES, subpiccaps);
169 gst_element_class_add_pad_template (gstelement_class, audiosrctempl);
170 gst_element_class_add_pad_template (gstelement_class, videosrctempl);
171 gst_element_class_add_pad_template (gstelement_class, subsrctempl);
172 gst_element_class_add_pad_template (gstelement_class, subpicsrctempl);
173 gst_element_class_add_pad_template (gstelement_class,
174 gst_static_pad_template_get (&sink_templ));
176 gst_element_class_set_static_metadata (gstelement_class, "Avi demuxer",
178 "Demultiplex an avi file into audio and video",
179 "Erik Walthinsen <omega@cse.ogi.edu>, "
180 "Wim Taymans <wim.taymans@chello.be>, "
181 "Thijs Vermeir <thijsvermeir@gmail.com>");
185 gst_avi_demux_init (GstAviDemux * avi)
187 avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
188 gst_pad_set_activate_function (avi->sinkpad,
189 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
190 gst_pad_set_activatemode_function (avi->sinkpad,
191 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_mode));
192 gst_pad_set_chain_function (avi->sinkpad,
193 GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
194 gst_pad_set_event_function (avi->sinkpad,
195 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
196 gst_element_add_pad (GST_ELEMENT_CAST (avi), avi->sinkpad);
198 avi->adapter = gst_adapter_new ();
199 avi->flowcombiner = gst_flow_combiner_new ();
201 gst_avi_demux_reset (avi);
203 GST_OBJECT_FLAG_SET (avi, GST_ELEMENT_FLAG_INDEXABLE);
207 gst_avi_demux_finalize (GObject * object)
209 GstAviDemux *avi = GST_AVI_DEMUX (object);
211 GST_DEBUG ("AVI: finalize");
213 g_object_unref (avi->adapter);
214 gst_flow_combiner_free (avi->flowcombiner);
216 G_OBJECT_CLASS (parent_class)->finalize (object);
220 gst_avi_demux_reset_stream (GstAviDemux * avi, GstAviStream * stream)
222 g_free (stream->strh);
223 g_free (stream->strf.data);
224 g_free (stream->name);
225 g_free (stream->index);
226 g_free (stream->indexes);
227 if (stream->initdata)
228 gst_buffer_unref (stream->initdata);
229 if (stream->extradata)
230 gst_buffer_unref (stream->extradata);
231 if (stream->rgb8_palette)
232 gst_buffer_unref (stream->rgb8_palette);
234 if (stream->exposed) {
235 gst_pad_set_active (stream->pad, FALSE);
236 gst_element_remove_pad (GST_ELEMENT_CAST (avi), stream->pad);
237 gst_flow_combiner_remove_pad (avi->flowcombiner, stream->pad);
239 gst_object_unref (stream->pad);
241 if (stream->taglist) {
242 gst_tag_list_unref (stream->taglist);
243 stream->taglist = NULL;
245 memset (stream, 0, sizeof (GstAviStream));
249 gst_avi_demux_reset (GstAviDemux * avi)
253 GST_DEBUG ("AVI: reset");
255 for (i = 0; i < avi->num_streams; i++)
256 gst_avi_demux_reset_stream (avi, &avi->stream[i]);
258 avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
259 avi->num_streams = 0;
260 avi->num_v_streams = 0;
261 avi->num_a_streams = 0;
262 avi->num_t_streams = 0;
263 avi->num_sp_streams = 0;
264 avi->main_stream = -1;
266 avi->have_group_id = FALSE;
267 avi->group_id = G_MAXUINT;
269 avi->state = GST_AVI_DEMUX_START;
271 avi->building_index = FALSE;
273 avi->index_offset = 0;
278 if (avi->element_index)
279 gst_object_unref (avi->element_index);
280 avi->element_index = NULL;
283 if (avi->seg_event) {
284 gst_event_unref (avi->seg_event);
285 avi->seg_event = NULL;
287 if (avi->seek_event) {
288 gst_event_unref (avi->seek_event);
289 avi->seek_event = NULL;
293 gst_tag_list_unref (avi->globaltags);
294 avi->globaltags = NULL;
296 avi->got_tags = TRUE; /* we always want to push global tags */
297 avi->have_eos = FALSE;
298 avi->seekable = TRUE;
300 gst_adapter_clear (avi->adapter);
302 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
306 /* GstElement methods */
309 static const GstFormat *
310 gst_avi_demux_get_src_formats (GstPad * pad)
312 GstAviStream *stream = gst_pad_get_element_private (pad);
314 static const GstFormat src_a_formats[] = {
320 static const GstFormat src_v_formats[] = {
326 return (stream->strh->type == GST_RIFF_FCC_auds ?
327 src_a_formats : src_v_formats);
331 /* assumes stream->strf.auds->av_bps != 0 */
332 static inline GstClockTime
333 avi_stream_convert_bytes_to_time_unchecked (GstAviStream * stream,
336 return gst_util_uint64_scale_int (bytes, GST_SECOND,
337 stream->strf.auds->av_bps);
340 static inline guint64
341 avi_stream_convert_time_to_bytes_unchecked (GstAviStream * stream,
344 return gst_util_uint64_scale_int (time, stream->strf.auds->av_bps,
348 /* assumes stream->strh->rate != 0 */
349 static inline GstClockTime
350 avi_stream_convert_frames_to_time_unchecked (GstAviStream * stream,
353 return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
357 static inline guint64
358 avi_stream_convert_time_to_frames_unchecked (GstAviStream * stream,
361 return gst_util_uint64_scale (time, stream->strh->rate,
362 stream->strh->scale * GST_SECOND);
366 gst_avi_demux_src_convert (GstPad * pad,
367 GstFormat src_format,
368 gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
370 GstAviStream *stream = gst_pad_get_element_private (pad);
374 "Received src_format:%s, src_value:%" G_GUINT64_FORMAT
375 ", dest_format:%s", gst_format_get_name (src_format), src_value,
376 gst_format_get_name (*dest_format));
378 if (G_UNLIKELY (src_format == *dest_format)) {
379 *dest_value = src_value;
382 if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
386 if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
387 (src_format == GST_FORMAT_BYTES
388 || *dest_format == GST_FORMAT_BYTES))) {
393 switch (src_format) {
394 case GST_FORMAT_TIME:
395 switch (*dest_format) {
396 case GST_FORMAT_BYTES:
397 *dest_value = gst_util_uint64_scale_int (src_value,
398 stream->strf.auds->av_bps, GST_SECOND);
400 case GST_FORMAT_DEFAULT:
402 gst_util_uint64_scale_round (src_value, stream->strh->rate,
403 stream->strh->scale * GST_SECOND);
410 case GST_FORMAT_BYTES:
411 switch (*dest_format) {
412 case GST_FORMAT_TIME:
413 if (stream->strf.auds->av_bps != 0) {
414 *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
424 case GST_FORMAT_DEFAULT:
425 switch (*dest_format) {
426 case GST_FORMAT_TIME:
428 avi_stream_convert_frames_to_time_unchecked (stream, src_value);
441 "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
442 gst_format_get_name (*dest_format), *dest_value);
447 gst_avi_demux_handle_src_query (GstPad * pad, GstObject * parent,
451 GstAviDemux *avi = GST_AVI_DEMUX (parent);
453 GstAviStream *stream = gst_pad_get_element_private (pad);
455 if (!stream->strh || !stream->strf.data)
456 return gst_pad_query_default (pad, parent, query);
458 switch (GST_QUERY_TYPE (query)) {
459 case GST_QUERY_POSITION:{
462 GST_DEBUG ("pos query for stream %u: frames %u, bytes %u",
463 stream->num, stream->current_entry, stream->current_total);
465 /* FIXME, this looks clumsy */
466 if (stream->strh->type == GST_RIFF_FCC_auds) {
467 if (stream->is_vbr) {
469 pos = avi_stream_convert_frames_to_time_unchecked (stream,
470 stream->current_entry);
471 GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
472 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
473 } else if (stream->strf.auds->av_bps != 0) {
475 pos = avi_stream_convert_bytes_to_time_unchecked (stream,
476 stream->current_total);
477 GST_DEBUG_OBJECT (avi,
478 "CBR convert bytes %u, time %" GST_TIME_FORMAT,
479 stream->current_total, GST_TIME_ARGS (pos));
480 } else if (stream->idx_n != 0 && stream->total_bytes != 0) {
481 /* calculate timestamps based on percentage of length */
482 guint64 xlen = avi->avih->us_frame *
483 avi->avih->tot_frames * GST_USECOND;
485 pos = gst_util_uint64_scale (xlen, stream->current_total,
486 stream->total_bytes);
487 GST_DEBUG_OBJECT (avi,
488 "CBR perc convert bytes %u, time %" GST_TIME_FORMAT,
489 stream->current_total, GST_TIME_ARGS (pos));
495 if (stream->strh->rate != 0) {
496 pos = gst_util_uint64_scale ((guint64) stream->current_entry *
497 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
499 pos = stream->current_entry * avi->avih->us_frame * GST_USECOND;
503 GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
504 gst_query_set_position (query, GST_FORMAT_TIME, pos);
506 GST_WARNING ("pos query failed");
509 case GST_QUERY_DURATION:
512 GstClockTime duration;
514 /* only act on audio or video streams */
515 if (stream->strh->type != GST_RIFF_FCC_auds &&
516 stream->strh->type != GST_RIFF_FCC_vids &&
517 stream->strh->type != GST_RIFF_FCC_iavs) {
522 /* take stream duration, fall back to avih duration */
523 if ((duration = stream->duration) == -1)
524 if ((duration = stream->hdr_duration) == -1)
525 duration = avi->duration;
527 gst_query_parse_duration (query, &fmt, NULL);
530 case GST_FORMAT_TIME:
531 gst_query_set_duration (query, fmt, duration);
533 case GST_FORMAT_DEFAULT:
536 GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
539 if (stream->idx_n > 0)
540 gst_query_set_duration (query, fmt, stream->idx_n);
541 else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
542 duration, fmt, &dur))
543 gst_query_set_duration (query, fmt, dur);
552 case GST_QUERY_SEEKING:{
555 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
556 if (fmt == GST_FORMAT_TIME) {
557 gboolean seekable = TRUE;
559 if (avi->streaming) {
560 seekable = avi->seekable;
563 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
564 0, stream->duration);
569 case GST_QUERY_CONVERT:{
570 GstFormat src_fmt, dest_fmt;
571 gint64 src_val, dest_val;
573 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
574 if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
576 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
578 res = gst_pad_query_default (pad, parent, query);
581 case GST_QUERY_SEGMENT:
586 format = avi->segment.format;
589 gst_segment_to_stream_time (&avi->segment, format,
591 if ((stop = avi->segment.stop) == -1)
592 stop = avi->segment.duration;
594 stop = gst_segment_to_stream_time (&avi->segment, format, stop);
596 gst_query_set_segment (query, avi->segment.rate, format, start, stop);
601 res = gst_pad_query_default (pad, parent, query);
609 static const GstEventMask *
610 gst_avi_demux_get_event_mask (GstPad * pad)
612 static const GstEventMask masks[] = {
613 {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
623 gst_avi_demux_seek_streams (GstAviDemux * avi, guint64 offset, gboolean before)
625 GstAviStream *stream;
626 GstIndexEntry *entry;
628 gint64 val, min = offset;
630 for (i = 0; i < avi->num_streams; i++) {
631 stream = &avi->stream[i];
633 entry = gst_index_get_assoc_entry (avi->element_index, stream->index_id,
634 before ? GST_INDEX_LOOKUP_BEFORE : GST_INDEX_LOOKUP_AFTER,
635 GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_BYTES, offset);
639 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
640 GST_DEBUG_OBJECT (avi, "stream %d, previous entry at %"
641 G_GUINT64_FORMAT, i, val);
649 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
650 stream->current_entry = 0;
651 stream->current_total = 0;
655 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
656 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT,
659 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &val);
660 stream->current_total = val;
661 gst_index_entry_assoc_map (entry, GST_FORMAT_DEFAULT, &val);
662 stream->current_entry = val;
670 gst_avi_demux_index_entry_offset_search (GstAviIndexEntry * entry,
673 if (entry->offset < *offset)
675 else if (entry->offset > *offset)
681 gst_avi_demux_seek_streams_index (GstAviDemux * avi, guint64 offset,
684 GstAviStream *stream;
685 GstAviIndexEntry *entry;
687 gint64 val, min = offset;
690 for (i = 0; i < avi->num_streams; i++) {
691 stream = &avi->stream[i];
693 /* compensate for chunk header */
696 gst_util_array_binary_search (stream->index, stream->idx_n,
697 sizeof (GstAviIndexEntry),
698 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
699 before ? GST_SEARCH_MODE_BEFORE : GST_SEARCH_MODE_AFTER, &offset, NULL);
703 index = entry - stream->index;
707 val = stream->index[index].offset;
708 GST_DEBUG_OBJECT (avi,
709 "stream %d, previous entry at %" G_GUINT64_FORMAT, i, val);
717 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
718 stream->current_entry = 0;
719 stream->current_total = 0;
723 val = stream->index[index].offset - 8;
724 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT, i,
727 stream->current_total = stream->index[index].total;
728 stream->current_entry = index;
734 #define GST_AVI_SEEK_PUSH_DISPLACE (4 * GST_SECOND)
737 gst_avi_demux_handle_sink_event (GstPad * pad, GstObject * parent,
741 GstAviDemux *avi = GST_AVI_DEMUX (parent);
743 GST_DEBUG_OBJECT (avi,
744 "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
746 switch (GST_EVENT_TYPE (event)) {
747 case GST_EVENT_SEGMENT:
749 gint64 boffset, offset = 0;
751 GstEvent *segment_event;
753 /* some debug output */
754 gst_event_copy_segment (event, &segment);
755 GST_DEBUG_OBJECT (avi, "received newsegment %" GST_SEGMENT_FORMAT,
758 /* chain will send initial newsegment after pads have been added */
759 if (avi->state != GST_AVI_DEMUX_MOVI) {
760 GST_DEBUG_OBJECT (avi, "still starting, eating event");
764 /* we only expect a BYTE segment, e.g. following a seek */
765 if (segment.format != GST_FORMAT_BYTES) {
766 GST_DEBUG_OBJECT (avi, "unsupported segment format, ignoring");
770 if (avi->have_index) {
771 GstAviIndexEntry *entry;
772 guint i = 0, index = 0, k = 0;
773 GstAviStream *stream;
775 /* compensate chunk header, stored index offset points after header */
776 boffset = segment.start + 8;
777 /* find which stream we're on */
779 stream = &avi->stream[i];
781 /* find the index for start bytes offset */
782 entry = gst_util_array_binary_search (stream->index,
783 stream->idx_n, sizeof (GstAviIndexEntry),
784 (GCompareDataFunc) gst_avi_demux_index_entry_offset_search,
785 GST_SEARCH_MODE_AFTER, &boffset, NULL);
789 index = entry - stream->index;
791 /* we are on the stream with a chunk start offset closest to start */
792 if (!offset || stream->index[index].offset < offset) {
793 offset = stream->index[index].offset;
796 /* exact match needs no further searching */
797 if (stream->index[index].offset == boffset)
799 } while (++i < avi->num_streams);
802 stream = &avi->stream[k];
804 /* so we have no idea what is to come, or where we are */
806 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
810 /* get the ts corresponding to start offset bytes for the stream */
811 gst_avi_demux_get_buffer_info (avi, stream, index,
812 (GstClockTime *) & segment.time, NULL, NULL, NULL);
814 } else if (avi->element_index) {
815 GstIndexEntry *entry;
817 /* Let's check if we have an index entry for this position */
818 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
819 GST_INDEX_LOOKUP_AFTER, GST_ASSOCIATION_FLAG_NONE,
820 GST_FORMAT_BYTES, segment.start);
822 /* we can not go where we have not yet been before ... */
824 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
828 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME,
829 (gint64 *) & segment.time);
830 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &offset);
833 GST_WARNING_OBJECT (avi, "no index data, forcing EOS");
837 segment.format = GST_FORMAT_TIME;
838 segment.start = segment.time;
839 segment.stop = GST_CLOCK_TIME_NONE;
840 segment.position = segment.start;
842 /* rescue duration */
843 segment.duration = avi->segment.duration;
845 /* set up segment and send downstream */
846 gst_segment_copy_into (&segment, &avi->segment);
848 GST_DEBUG_OBJECT (avi, "Pushing newseg %" GST_SEGMENT_FORMAT, &segment);
849 segment_event = gst_event_new_segment (&segment);
850 gst_event_set_seqnum (segment_event, gst_event_get_seqnum (event));
851 gst_avi_demux_push_event (avi, segment_event);
853 GST_DEBUG_OBJECT (avi, "next chunk expected at %" G_GINT64_FORMAT,
856 /* adjust state for streaming thread accordingly */
858 gst_avi_demux_seek_streams_index (avi, offset, FALSE);
861 gst_avi_demux_seek_streams (avi, offset, FALSE);
864 /* set up streaming thread */
865 g_assert (offset >= boffset);
866 avi->offset = boffset;
867 avi->todrop = offset - boffset;
870 gst_event_unref (event);
875 avi->have_eos = TRUE;
880 if (avi->state != GST_AVI_DEMUX_MOVI) {
881 gst_event_unref (event);
882 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
883 (NULL), ("got eos and didn't receive a complete header object"));
884 } else if (!gst_avi_demux_push_event (avi, event)) {
885 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
886 (NULL), ("got eos but no streams (yet)"));
890 case GST_EVENT_FLUSH_STOP:
894 gst_adapter_clear (avi->adapter);
895 avi->have_eos = FALSE;
896 for (i = 0; i < avi->num_streams; i++) {
897 avi->stream[i].discont = TRUE;
899 /* fall through to default case so that the event gets passed downstream */
902 res = gst_pad_event_default (pad, parent, event);
910 gst_avi_demux_handle_src_event (GstPad * pad, GstObject * parent,
914 GstAviDemux *avi = GST_AVI_DEMUX (parent);
916 GST_DEBUG_OBJECT (avi,
917 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
919 switch (GST_EVENT_TYPE (event)) {
921 if (!avi->streaming) {
922 res = gst_avi_demux_handle_seek (avi, pad, event);
924 res = gst_avi_demux_handle_seek_push (avi, pad, event);
926 gst_event_unref (event);
929 case GST_EVENT_NAVIGATION:
931 gst_event_unref (event);
934 res = gst_pad_event_default (pad, parent, event);
941 /* streaming helper (push) */
944 * gst_avi_demux_peek_chunk_info:
946 * @tag: holder for tag
947 * @size: holder for tag size
949 * Peek next chunk info (tag and size)
951 * Returns: TRUE when one chunk info has been got
954 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
956 const guint8 *data = NULL;
958 if (gst_adapter_available (avi->adapter) < 8)
961 data = gst_adapter_map (avi->adapter, 8);
962 *tag = GST_READ_UINT32_LE (data);
963 *size = GST_READ_UINT32_LE (data + 4);
964 gst_adapter_unmap (avi->adapter);
970 * gst_avi_demux_peek_chunk:
972 * @tag: holder for tag
973 * @size: holder for tag size
975 * Peek enough data for one full chunk
977 * Returns: %TRUE when one chunk has been got
980 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
982 guint32 peek_size = 0;
985 if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
988 /* size 0 -> empty data buffer would surprise most callers,
989 * large size -> do not bother trying to squeeze that into adapter,
990 * so we throw poor man's exception, which can be caught if caller really
991 * wants to handle 0 size chunk */
992 if (!(*size) || (*size) >= (1 << 30))
995 peek_size = (*size + 1) & ~1;
996 available = gst_adapter_available (avi->adapter);
998 GST_DEBUG_OBJECT (avi,
999 "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
1000 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
1002 if (available < (8 + peek_size))
1010 GST_INFO_OBJECT (avi, "Failed to peek");
1015 GST_INFO_OBJECT (avi,
1016 "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
1017 GST_FOURCC_ARGS (*tag));
1018 /* chain should give up */
1019 avi->abort_buffering = TRUE;
1024 GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
1025 available, 8 + peek_size);
1033 * gst_avi_demux_parse_file_header:
1034 * @element: caller element (used for errors/debug).
1035 * @buf: input data to be used for parsing.
1037 * "Open" a RIFF/AVI file. The buffer should be at least 12
1038 * bytes long. Takes ownership of @buf.
1040 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
1041 * Throws an error, caller should error out (fatal).
1044 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
1049 stamp = gst_util_get_timestamp ();
1051 /* riff_parse posts an error */
1052 if (!gst_riff_parse_file_header (element, buf, &doctype))
1055 if (doctype != GST_RIFF_RIFF_AVI)
1058 stamp = gst_util_get_timestamp () - stamp;
1059 GST_DEBUG_OBJECT (element, "header parsing took %" GST_TIME_FORMAT,
1060 GST_TIME_ARGS (stamp));
1067 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
1068 ("File is not an AVI file: 0x%" G_GINT32_MODIFIER "x", doctype));
1074 * Read AVI file tag when streaming
1076 static GstFlowReturn
1077 gst_avi_demux_stream_init_push (GstAviDemux * avi)
1079 if (gst_adapter_available (avi->adapter) >= 12) {
1082 tmp = gst_adapter_take_buffer (avi->adapter, 12);
1084 GST_DEBUG ("Parsing avi header");
1085 if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), tmp)) {
1086 return GST_FLOW_ERROR;
1088 GST_DEBUG ("header ok");
1091 avi->state = GST_AVI_DEMUX_HEADER;
1099 static GstFlowReturn
1100 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
1103 GstBuffer *buf = NULL;
1105 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
1106 if (res != GST_FLOW_OK)
1108 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
1118 GST_DEBUG_OBJECT (avi, "error parsing file header");
1119 return GST_FLOW_ERROR;
1123 /* AVI header handling */
1125 * gst_avi_demux_parse_avih:
1126 * @avi: caller element (used for errors/debug).
1127 * @buf: input data to be used for parsing.
1128 * @avih: pointer to structure (filled in by function) containing
1129 * stream information (such as flags, number of streams, etc.).
1131 * Read 'avih' header. Discards buffer after use.
1133 * Returns: TRUE on success, FALSE otherwise. Throws an error if
1134 * the header is invalid. The caller should error out
1138 gst_avi_demux_parse_avih (GstAviDemux * avi,
1139 GstBuffer * buf, gst_riff_avih ** _avih)
1141 gst_riff_avih *avih;
1147 size = gst_buffer_get_size (buf);
1148 if (size < sizeof (gst_riff_avih))
1149 goto avih_too_small;
1151 avih = g_malloc (size);
1152 gst_buffer_extract (buf, 0, avih, size);
1154 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1155 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
1156 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
1157 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
1158 avih->flags = GUINT32_FROM_LE (avih->flags);
1159 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
1160 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
1161 avih->streams = GUINT32_FROM_LE (avih->streams);
1162 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
1163 avih->width = GUINT32_FROM_LE (avih->width);
1164 avih->height = GUINT32_FROM_LE (avih->height);
1165 avih->scale = GUINT32_FROM_LE (avih->scale);
1166 avih->rate = GUINT32_FROM_LE (avih->rate);
1167 avih->start = GUINT32_FROM_LE (avih->start);
1168 avih->length = GUINT32_FROM_LE (avih->length);
1172 GST_INFO_OBJECT (avi, "avih tag found:");
1173 GST_INFO_OBJECT (avi, " us_frame %u", avih->us_frame);
1174 GST_INFO_OBJECT (avi, " max_bps %u", avih->max_bps);
1175 GST_INFO_OBJECT (avi, " pad_gran %u", avih->pad_gran);
1176 GST_INFO_OBJECT (avi, " flags 0x%08x", avih->flags);
1177 GST_INFO_OBJECT (avi, " tot_frames %u", avih->tot_frames);
1178 GST_INFO_OBJECT (avi, " init_frames %u", avih->init_frames);
1179 GST_INFO_OBJECT (avi, " streams %u", avih->streams);
1180 GST_INFO_OBJECT (avi, " bufsize %u", avih->bufsize);
1181 GST_INFO_OBJECT (avi, " width %u", avih->width);
1182 GST_INFO_OBJECT (avi, " height %u", avih->height);
1183 GST_INFO_OBJECT (avi, " scale %u", avih->scale);
1184 GST_INFO_OBJECT (avi, " rate %u", avih->rate);
1185 GST_INFO_OBJECT (avi, " start %u", avih->start);
1186 GST_INFO_OBJECT (avi, " length %u", avih->length);
1189 gst_buffer_unref (buf);
1191 if (avih->us_frame != 0 && avih->tot_frames != 0)
1193 (guint64) avih->us_frame * (guint64) avih->tot_frames * 1000;
1195 avi->duration = GST_CLOCK_TIME_NONE;
1197 GST_INFO_OBJECT (avi, " header duration %" GST_TIME_FORMAT,
1198 GST_TIME_ARGS (avi->duration));
1205 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No buffer"));
1210 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
1211 ("Too small avih (%" G_GSIZE_FORMAT " available, %d needed)",
1212 size, (int) sizeof (gst_riff_avih)));
1213 gst_buffer_unref (buf);
1219 * gst_avi_demux_parse_superindex:
1220 * @avi: caller element (used for debugging/errors).
1221 * @buf: input data to use for parsing.
1222 * @locations: locations in the file (byte-offsets) that contain
1223 * the actual indexes (see get_avi_demux_parse_subindex()).
1224 * The array ends with GST_BUFFER_OFFSET_NONE.
1226 * Reads superindex (openDML-2 spec stuff) from the provided data.
1228 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
1229 * on error, but they are not fatal.
1232 gst_avi_demux_parse_superindex (GstAviDemux * avi,
1233 GstBuffer * buf, guint64 ** _indexes)
1245 gst_buffer_map (buf, &map, GST_MAP_READ);
1256 /* check type of index. The opendml2 specs state that
1257 * there should be 4 dwords per array entry. Type can be
1258 * either frame or field (and we don't care). */
1259 if (GST_READ_UINT16_LE (data) != 4 ||
1260 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
1261 GST_WARNING_OBJECT (avi,
1262 "Superindex for stream has unexpected "
1263 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1264 GST_READ_UINT16_LE (data), data[2], data[3]);
1265 bpe = GST_READ_UINT16_LE (data) * 4;
1267 num = GST_READ_UINT32_LE (&data[4]);
1269 GST_DEBUG_OBJECT (avi, "got %d indexes", num);
1271 /* this can't work out well ... */
1272 if (num > G_MAXUINT32 >> 1 || bpe < 8) {
1273 goto invalid_params;
1276 indexes = g_new (guint64, num + 1);
1277 for (i = 0; i < num; i++) {
1278 if (size < 24 + bpe * (i + 1))
1280 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1281 GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
1283 indexes[i] = GST_BUFFER_OFFSET_NONE;
1284 *_indexes = indexes;
1286 gst_buffer_unmap (buf, &map);
1287 gst_buffer_unref (buf);
1294 GST_ERROR_OBJECT (avi,
1295 "Not enough data to parse superindex (%" G_GSIZE_FORMAT
1296 " available, 24 needed)", size);
1298 gst_buffer_unmap (buf, &map);
1299 gst_buffer_unref (buf);
1305 GST_ERROR_OBJECT (avi, "invalid index parameters (num = %d, bpe = %d)",
1307 gst_buffer_unmap (buf, &map);
1308 gst_buffer_unref (buf);
1313 /* add an entry to the index of a stream. @num should be an estimate of the
1314 * total amount of index entries for all streams and is used to dynamically
1315 * allocate memory for the index entries. */
1316 static inline gboolean
1317 gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
1318 guint num, GstAviIndexEntry * entry)
1320 /* ensure index memory */
1321 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
1322 guint idx_max = stream->idx_max;
1323 GstAviIndexEntry *new_idx;
1325 /* we need to make some more room */
1327 /* initial size guess, assume each stream has an equal amount of entries,
1328 * overshoot with at least 8K */
1329 idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
1331 idx_max += 8192 / sizeof (GstAviIndexEntry);
1332 GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
1333 stream->idx_max, idx_max);
1335 new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
1336 /* out of memory, if this fails stream->index is untouched. */
1337 if (G_UNLIKELY (!new_idx))
1340 stream->index = new_idx;
1341 stream->idx_max = idx_max;
1344 /* update entry total and stream stats. The entry total can be converted to
1345 * the timestamp of the entry easily. */
1346 if (stream->strh->type == GST_RIFF_FCC_auds) {
1349 if (stream->is_vbr) {
1350 entry->total = stream->total_blocks;
1352 entry->total = stream->total_bytes;
1354 blockalign = stream->strf.auds->blockalign;
1356 stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
1358 stream->total_blocks++;
1360 if (stream->is_vbr) {
1361 entry->total = stream->idx_n;
1363 entry->total = stream->total_bytes;
1366 stream->total_bytes += entry->size;
1367 if (ENTRY_IS_KEYFRAME (entry))
1368 stream->n_keyframes++;
1371 GST_LOG_OBJECT (avi,
1372 "Adding stream %u, index entry %d, kf %d, size %u "
1373 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
1374 stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
1376 stream->index[stream->idx_n++] = *entry;
1381 /* given @entry_n in @stream, calculate info such as timestamps and
1382 * offsets for the entry. */
1384 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1385 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1386 guint64 * offset, guint64 * offset_end)
1388 GstAviIndexEntry *entry;
1390 entry = &stream->index[entry_n];
1392 if (stream->is_vbr) {
1393 /* VBR stream next timestamp */
1394 if (stream->strh->type == GST_RIFF_FCC_auds) {
1397 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
1400 if (G_LIKELY (entry_n + 1 < stream->idx_n))
1401 size = stream->index[entry_n + 1].total - entry->total;
1402 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1403 entry->total + size);
1408 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
1410 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1413 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
1414 /* constant rate stream */
1417 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
1419 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
1420 entry->total + entry->size);
1422 if (stream->strh->type == GST_RIFF_FCC_vids) {
1423 /* video offsets are the frame number */
1427 *offset_end = entry_n + 1;
1429 /* no offsets for audio */
1437 /* collect and debug stats about the indexes for all streams.
1438 * This method is also responsible for filling in the stream duration
1439 * as measured by the amount of index entries.
1441 * Returns TRUE if the index is not empty, else FALSE */
1443 gst_avi_demux_do_index_stats (GstAviDemux * avi)
1445 guint total_idx = 0;
1447 #ifndef GST_DISABLE_GST_DEBUG
1448 guint total_max = 0;
1451 /* get stream stats now */
1452 for (i = 0; i < avi->num_streams; i++) {
1453 GstAviStream *stream;
1455 if (G_UNLIKELY (!(stream = &avi->stream[i])))
1457 if (G_UNLIKELY (!stream->strh))
1459 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
1462 /* we interested in the end_ts of the last entry, which is the total
1463 * duration of this stream */
1464 gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
1465 NULL, &stream->idx_duration, NULL, NULL);
1467 total_idx += stream->idx_n;
1468 #ifndef GST_DISABLE_GST_DEBUG
1469 total_max += stream->idx_max;
1471 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
1472 "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
1473 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
1474 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
1475 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
1476 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
1478 total_idx *= sizeof (GstAviIndexEntry);
1479 #ifndef GST_DISABLE_GST_DEBUG
1480 total_max *= sizeof (GstAviIndexEntry);
1482 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
1483 total_max, total_idx, total_max - total_idx);
1485 if (total_idx == 0) {
1486 GST_WARNING_OBJECT (avi, "Index is empty !");
1493 * gst_avi_demux_parse_subindex:
1495 * @buf: input data to use for parsing.
1496 * @stream: stream context.
1497 * @entries_list: a list (returned by the function) containing all the
1498 * indexes parsed in this specific subindex. The first
1499 * entry is also a pointer to allocated memory that needs
1500 * to be free´ed. May be NULL if no supported indexes were
1503 * Reads superindex (openDML-2 spec stuff) from the provided data.
1504 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1506 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1507 * throw an error, caller should bail out asap.
1510 gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
1522 gst_buffer_map (buf, &map, GST_MAP_READ);
1529 /* We don't support index-data yet */
1531 goto not_implemented;
1533 /* check type of index. The opendml2 specs state that
1534 * there should be 4 dwords per array entry. Type can be
1535 * either frame or field (and we don't care). */
1536 bpe = (data[2] & 0x01) ? 12 : 8;
1537 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1538 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1539 GST_WARNING_OBJECT (avi,
1540 "Superindex for stream %d has unexpected "
1541 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1542 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1543 bpe = GST_READ_UINT16_LE (data) * 4;
1545 num = GST_READ_UINT32_LE (&data[4]);
1546 baseoff = GST_READ_UINT64_LE (&data[12]);
1548 /* If there's nothing, just return ! */
1552 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1554 for (i = 0; i < num; i++) {
1555 GstAviIndexEntry entry;
1557 if (map.size < 24 + bpe * (i + 1))
1560 /* fill in offset and size. offset contains the keyframe flag in the
1562 entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1563 entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1565 if (stream->strh->type == GST_RIFF_FCC_auds) {
1566 /* all audio frames are keyframes */
1567 ENTRY_SET_KEYFRAME (&entry);
1569 /* else read flags */
1570 entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
1572 entry.size &= ~0x80000000;
1575 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
1579 gst_buffer_unmap (buf, &map);
1580 gst_buffer_unref (buf);
1587 GST_ERROR_OBJECT (avi,
1588 "Not enough data to parse subindex (%" G_GSIZE_FORMAT
1589 " available, 24 needed)", map.size);
1590 goto done; /* continue */
1594 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1595 ("Subindex-is-data is not implemented"));
1596 gst_buffer_unmap (buf, &map);
1597 gst_buffer_unref (buf);
1602 GST_DEBUG_OBJECT (avi, "the index is empty");
1603 goto done; /* continue */
1607 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1608 ("Cannot allocate memory for %u*%u=%u bytes",
1609 (guint) sizeof (GstAviIndexEntry), num,
1610 (guint) sizeof (GstAviIndexEntry) * num));
1611 gst_buffer_unmap (buf, &map);
1612 gst_buffer_unref (buf);
1618 * Create and push a flushing seek event upstream
1621 perform_seek_to_offset (GstAviDemux * demux, guint64 offset)
1626 GST_DEBUG_OBJECT (demux, "Seeking to %" G_GUINT64_FORMAT, offset);
1629 gst_event_new_seek (1.0, GST_FORMAT_BYTES,
1630 GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
1631 GST_SEEK_TYPE_NONE, -1);
1633 res = gst_pad_push_event (demux->sinkpad, event);
1636 demux->offset = offset;
1641 * Read AVI index when streaming
1644 gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
1646 guint32 tag = 0, size;
1647 GstBuffer *buf = NULL;
1650 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1652 if (avi->odml_subidxs[avi->odml_subidx] != avi->offset)
1655 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1658 /* this is the ODML chunk we expect */
1659 odml_stream = avi->odml_stream;
1661 if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + odml_stream / 10,
1662 '0' + odml_stream % 10)) &&
1663 (tag != GST_MAKE_FOURCC ('0' + odml_stream / 10,
1664 '0' + odml_stream % 10, 'i', 'x'))) {
1665 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1666 GST_FOURCC_ARGS (tag));
1670 avi->offset += 8 + GST_ROUND_UP_2 (size);
1671 /* flush chunk header so we get just the 'size' payload data */
1672 gst_adapter_flush (avi->adapter, 8);
1673 buf = gst_adapter_take_buffer (avi->adapter, size);
1675 if (!gst_avi_demux_parse_subindex (avi, &avi->stream[odml_stream], buf))
1678 /* we parsed the index, go to next subindex */
1681 if (avi->odml_subidxs[avi->odml_subidx] == GST_BUFFER_OFFSET_NONE) {
1682 /* we reached the end of the indexes for this stream, move to the next
1683 * stream to handle the first index */
1685 avi->odml_subidx = 0;
1687 if (avi->odml_stream < avi->num_streams) {
1688 /* there are more indexes */
1689 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
1691 /* we're done, get stream stats now */
1692 avi->have_index = gst_avi_demux_do_index_stats (avi);
1698 /* seek to next index */
1699 return perform_seek_to_offset (avi, avi->odml_subidxs[avi->odml_subidx]);
1706 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
1712 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1714 for (n = 0; n < avi->num_streams; n++) {
1715 GstAviStream *stream = &avi->stream[n];
1717 if (stream->indexes == NULL)
1720 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1721 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
1722 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1724 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1725 '0' + stream->num % 10)) &&
1726 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1727 '0' + stream->num % 10, 'i', 'x'))) {
1728 /* Some ODML files (created by god knows what muxer) have a ##ix format
1729 * instead of the 'official' ix##. They are still valid though. */
1730 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1731 GST_FOURCC_ARGS (tag));
1732 gst_buffer_unref (buf);
1736 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1740 g_free (stream->indexes);
1741 stream->indexes = NULL;
1743 /* get stream stats now */
1744 avi->have_index = gst_avi_demux_do_index_stats (avi);
1748 * gst_avi_demux_riff_parse_vprp:
1749 * @element: caller element (used for debugging/error).
1750 * @buf: input data to be used for parsing, stripped from header.
1751 * @vprp: a pointer (returned by this function) to a filled-in vprp
1752 * structure. Caller should free it.
1754 * Parses a video stream´s vprp. This function takes ownership of @buf.
1756 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1757 * should be skipped on error, but it is not fatal.
1760 gst_avi_demux_riff_parse_vprp (GstElement * element,
1761 GstBuffer * buf, gst_riff_vprp ** _vprp)
1763 gst_riff_vprp *vprp;
1767 g_return_val_if_fail (buf != NULL, FALSE);
1768 g_return_val_if_fail (_vprp != NULL, FALSE);
1770 size = gst_buffer_get_size (buf);
1772 if (size < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1775 vprp = g_malloc (size);
1776 gst_buffer_extract (buf, 0, vprp, size);
1778 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1779 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1780 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1781 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1782 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1783 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1784 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1785 vprp->width = GUINT32_FROM_LE (vprp->width);
1786 vprp->height = GUINT32_FROM_LE (vprp->height);
1787 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1791 /* calculate fields based on size */
1792 k = (size - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) / vprp->fields;
1793 if (vprp->fields > k) {
1794 GST_WARNING_OBJECT (element,
1795 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1798 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1799 GST_WARNING_OBJECT (element,
1800 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1801 GST_RIFF_VPRP_VIDEO_FIELDS);
1802 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1804 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1805 for (k = 0; k < vprp->fields; k++) {
1806 gst_riff_vprp_video_field_desc *fd;
1808 fd = &vprp->field_info[k];
1809 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1810 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1811 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1812 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1813 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1814 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1815 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1816 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1821 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1822 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1823 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1824 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1825 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1826 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1827 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1828 vprp->aspect & 0xffff);
1829 GST_INFO_OBJECT (element, " width %d", vprp->width);
1830 GST_INFO_OBJECT (element, " height %d", vprp->height);
1831 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1832 for (k = 0; k < vprp->fields; k++) {
1833 gst_riff_vprp_video_field_desc *fd;
1835 fd = &(vprp->field_info[k]);
1836 GST_INFO_OBJECT (element, " field %u description:", k);
1837 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1838 fd->compressed_bm_height);
1839 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1840 fd->compressed_bm_width);
1841 GST_INFO_OBJECT (element, " valid_bm_height %d",
1842 fd->valid_bm_height);
1843 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1844 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1845 fd->valid_bm_x_offset);
1846 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1847 fd->valid_bm_y_offset);
1848 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1849 fd->video_x_t_offset);
1850 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1853 gst_buffer_unref (buf);
1862 GST_ERROR_OBJECT (element,
1863 "Too small vprp (%" G_GSIZE_FORMAT " available, at least %d needed)",
1864 size, (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1865 gst_buffer_unref (buf);
1871 gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
1875 GST_DEBUG_OBJECT (avi, "force : %d", force);
1877 for (i = 0; i < avi->num_streams; i++) {
1878 GstAviStream *stream = &avi->stream[i];
1880 if (force || stream->idx_n != 0) {
1881 GST_LOG_OBJECT (avi, "Adding pad %s", GST_PAD_NAME (stream->pad));
1882 gst_element_add_pad ((GstElement *) avi, stream->pad);
1883 gst_flow_combiner_add_pad (avi->flowcombiner, stream->pad);
1886 if (avi->element_index)
1887 gst_index_get_writer_id (avi->element_index,
1888 GST_OBJECT_CAST (stream->pad), &stream->index_id);
1891 stream->exposed = TRUE;
1892 if (avi->main_stream == -1)
1893 avi->main_stream = i;
1895 GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
1897 gst_avi_demux_reset_stream (avi, stream);
1902 /* buf contains LIST chunk data, and will be padded to even size,
1903 * since some buggy files do not account for the padding of chunks
1904 * within a LIST in the size of the LIST */
1906 gst_avi_demux_roundup_list (GstAviDemux * avi, GstBuffer ** buf)
1910 size = gst_buffer_get_size (*buf);
1912 if (G_UNLIKELY (size & 1)) {
1916 GST_DEBUG_OBJECT (avi, "rounding up dubious list size %" G_GSIZE_FORMAT,
1918 obuf = gst_buffer_new_and_alloc (size + 1);
1920 gst_buffer_map (obuf, &map, GST_MAP_WRITE);
1921 gst_buffer_extract (*buf, 0, map.data, size);
1922 /* assume 0 padding, at least makes outcome deterministic */
1924 gst_buffer_unmap (obuf, &map);
1925 gst_buffer_replace (buf, obuf);
1930 gst_avi_demux_check_caps (GstAviDemux * avi, GstAviStream * stream,
1937 caps = gst_caps_make_writable (caps);
1939 s = gst_caps_get_structure (caps, 0);
1940 if (gst_structure_has_name (s, "video/x-raw")) {
1941 stream->is_raw = TRUE;
1942 if (!gst_structure_has_field (s, "pixel-aspect-ratio"))
1943 gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION,
1945 if (gst_structure_has_field_typed (s, "palette_data", GST_TYPE_BUFFER)) {
1946 gst_structure_get (s, "palette_data", GST_TYPE_BUFFER,
1947 &stream->rgb8_palette, NULL);
1948 gst_structure_remove_field (s, "palette_data");
1951 } else if (!gst_structure_has_name (s, "video/x-h264")) {
1955 GST_DEBUG_OBJECT (avi, "checking caps %" GST_PTR_FORMAT, caps);
1957 /* some muxers put invalid bytestream stuff in h264 extra data */
1958 val = gst_structure_get_value (s, "codec_data");
1959 if (val && (buf = gst_value_get_buffer (val))) {
1964 gst_buffer_map (buf, &map, GST_MAP_READ);
1968 guint32 h = GST_READ_UINT32_BE (data);
1969 gst_buffer_unmap (buf, &map);
1971 /* can hardly be valid AVC codec data */
1972 GST_DEBUG_OBJECT (avi,
1973 "discarding invalid codec_data containing byte-stream");
1974 /* so do not pretend to downstream that it is packetized avc */
1975 gst_structure_remove_field (s, "codec_data");
1976 /* ... but rather properly parsed bytestream */
1977 gst_structure_set (s, "stream-format", G_TYPE_STRING, "byte-stream",
1978 "alignment", G_TYPE_STRING, "au", NULL);
1981 gst_buffer_unmap (buf, &map);
1989 * gst_avi_demux_parse_stream:
1990 * @avi: calling element (used for debugging/errors).
1991 * @buf: input buffer used to parse the stream.
1993 * Parses all subchunks in a strl chunk (which defines a single
1994 * stream). Discards the buffer after use. This function will
1995 * increment the stream counter internally.
1997 * Returns: whether the stream was identified successfully.
1998 * Errors are not fatal. It does indicate the stream
2002 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
2004 GstAviStream *stream;
2005 GstElementClass *klass;
2006 GstPadTemplate *templ;
2007 GstBuffer *sub = NULL;
2010 gchar *codec_name = NULL, *padname = NULL;
2011 const gchar *tag_name;
2012 GstCaps *caps = NULL;
2014 GstElement *element;
2015 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
2016 gst_riff_vprp *vprp = NULL;
2021 element = GST_ELEMENT_CAST (avi);
2023 GST_DEBUG_OBJECT (avi, "Parsing stream");
2025 gst_avi_demux_roundup_list (avi, &buf);
2027 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
2028 GST_WARNING_OBJECT (avi,
2029 "maximum no of streams (%d) exceeded, ignoring stream",
2030 GST_AVI_DEMUX_MAX_STREAMS);
2031 gst_buffer_unref (buf);
2032 /* not a fatal error, let's say */
2036 stream = &avi->stream[avi->num_streams];
2038 /* initial settings */
2039 stream->idx_duration = GST_CLOCK_TIME_NONE;
2040 stream->hdr_duration = GST_CLOCK_TIME_NONE;
2041 stream->duration = GST_CLOCK_TIME_NONE;
2043 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
2044 /* sub can be NULL if the chunk is empty */
2046 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
2047 GST_FOURCC_ARGS (tag));
2051 case GST_RIFF_TAG_strh:
2053 gst_riff_strh *strh;
2056 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
2059 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
2060 /* ownership given away */
2062 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
2066 strh = stream->strh;
2067 /* sanity check; stream header frame rate matches global header
2069 if (stream->strh->type == GST_RIFF_FCC_vids) {
2071 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
2073 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
2074 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
2075 "frame duration = %d ms", strh->rate, strh->scale,
2076 (gint) (s_dur / GST_MSECOND));
2077 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
2078 strh->rate = GST_SECOND / GST_USECOND;
2079 strh->scale = h_dur / GST_USECOND;
2080 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
2081 strh->rate, strh->scale);
2084 /* determine duration as indicated by header */
2085 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
2086 strh->scale, GST_SECOND, (guint64) strh->rate);
2087 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
2088 GST_TIME_ARGS (stream->hdr_duration));
2089 if (stream->hdr_duration == 0)
2090 stream->hdr_duration = GST_CLOCK_TIME_NONE;
2095 case GST_RIFF_TAG_strf:
2097 gboolean res = FALSE;
2100 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
2104 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
2107 switch (stream->strh->type) {
2108 case GST_RIFF_FCC_vids:
2109 stream->is_vbr = TRUE;
2110 res = gst_riff_parse_strf_vids (element, sub,
2111 &stream->strf.vids, &stream->extradata);
2113 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
2115 case GST_RIFF_FCC_auds:
2117 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
2118 &stream->extradata);
2122 stream->is_vbr = (stream->strh->samplesize == 0)
2123 && stream->strh->scale > 1
2124 && stream->strf.auds->blockalign != 1;
2125 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
2126 stream->is_vbr, res);
2127 /* we need these or we have no way to come up with timestamps */
2128 if ((!stream->is_vbr && !stream->strf.auds->av_bps) ||
2129 (stream->is_vbr && (!stream->strh->scale ||
2130 !stream->strh->rate))) {
2131 GST_WARNING_OBJECT (element,
2132 "invalid audio header, ignoring stream");
2135 /* some more sanity checks */
2136 if (stream->is_vbr) {
2137 if (stream->strf.auds->blockalign <= 4) {
2138 /* that would mean (too) many frames per chunk,
2139 * so not likely set as expected */
2140 GST_DEBUG_OBJECT (element,
2141 "suspicious blockalign %d for VBR audio; "
2142 "overriding to 1 frame per chunk",
2143 stream->strf.auds->blockalign);
2144 /* this should top any likely value */
2145 stream->strf.auds->blockalign = (1 << 12);
2149 case GST_RIFF_FCC_iavs:
2150 stream->is_vbr = TRUE;
2151 res = gst_riff_parse_strf_iavs (element, sub,
2152 &stream->strf.iavs, &stream->extradata);
2154 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
2156 case GST_RIFF_FCC_txts:
2157 /* nothing to parse here */
2158 stream->is_vbr = (stream->strh->samplesize == 0)
2159 && (stream->strh->scale > 1);
2163 GST_ERROR_OBJECT (avi,
2164 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
2165 GST_FOURCC_ARGS (stream->strh->type));
2169 gst_buffer_unref (sub);
2177 case GST_RIFF_TAG_vprp:
2180 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
2184 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
2188 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
2192 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
2193 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
2194 /* not considered fatal */
2202 case GST_RIFF_TAG_strd:
2203 if (stream->initdata)
2204 gst_buffer_unref (stream->initdata);
2205 stream->initdata = sub;
2207 gst_avi_demux_parse_strd (avi, sub);
2211 case GST_RIFF_TAG_strn:
2212 g_free (stream->name);
2214 gst_buffer_map (sub, &map, GST_MAP_READ);
2215 stream->name = g_strndup ((gchar *) map.data, map.size);
2216 gst_buffer_unmap (sub, &map);
2217 gst_buffer_unref (sub);
2220 if (avi->globaltags == NULL)
2221 avi->globaltags = gst_tag_list_new_empty ();
2222 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE,
2223 GST_TAG_TITLE, stream->name, NULL);
2224 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
2227 gst_avi_demux_parse_idit (avi, sub);
2230 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
2231 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
2232 '0' + avi->num_streams % 10)) {
2233 g_free (stream->indexes);
2234 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
2235 stream->superindex = TRUE;
2239 GST_WARNING_OBJECT (avi,
2240 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
2241 GST_FOURCC_ARGS (tag));
2242 /* Only get buffer for debugging if the memdump is needed */
2243 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
2246 gst_buffer_map (sub, &map, GST_MAP_READ);
2247 GST_MEMDUMP_OBJECT (avi, "Unknown stream header tag", map.data,
2249 gst_buffer_unmap (sub, &map);
2252 case GST_RIFF_TAG_JUNQ:
2253 case GST_RIFF_TAG_JUNK:
2257 gst_buffer_unref (sub);
2263 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
2268 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
2272 /* get class to figure out the template */
2273 klass = GST_ELEMENT_GET_CLASS (avi);
2275 /* we now have all info, let´s set up a pad and a caps and be done */
2276 /* create stream name + pad */
2277 switch (stream->strh->type) {
2278 case GST_RIFF_FCC_vids:{
2281 fourcc = (stream->strf.vids->compression) ?
2282 stream->strf.vids->compression : stream->strh->fcc_handler;
2283 caps = gst_riff_create_video_caps (fourcc, stream->strh,
2284 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
2286 /* DXSB is XSUB, and it is placed inside a vids */
2287 if (!caps || fourcc != GST_MAKE_FOURCC ('D', 'X', 'S', 'B')) {
2288 padname = g_strdup_printf ("video_%u", avi->num_v_streams);
2289 templ = gst_element_class_get_pad_template (klass, "video_%u");
2291 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2292 G_TYPE_INT, fourcc, NULL);
2293 } else if (got_vprp && vprp) {
2294 guint32 aspect_n, aspect_d;
2297 aspect_n = vprp->aspect >> 16;
2298 aspect_d = vprp->aspect & 0xffff;
2299 /* calculate the pixel aspect ratio using w/h and aspect ratio */
2300 n = aspect_n * stream->strf.vids->height;
2301 d = aspect_d * stream->strf.vids->width;
2303 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
2305 /* very local, not needed elsewhere */
2309 caps = gst_avi_demux_check_caps (avi, stream, caps);
2310 tag_name = GST_TAG_VIDEO_CODEC;
2311 avi->num_v_streams++;
2313 padname = g_strdup_printf ("subpicture_%u", avi->num_sp_streams);
2314 templ = gst_element_class_get_pad_template (klass, "subpicture_%u");
2316 avi->num_sp_streams++;
2320 case GST_RIFF_FCC_auds:{
2321 /* FIXME: Do something with the channel reorder map */
2322 padname = g_strdup_printf ("audio_%u", avi->num_a_streams);
2323 templ = gst_element_class_get_pad_template (klass, "audio_%u");
2324 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
2325 stream->strh, stream->strf.auds, stream->extradata,
2326 stream->initdata, &codec_name, NULL);
2328 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
2329 G_TYPE_INT, stream->strf.auds->format, NULL);
2331 tag_name = GST_TAG_AUDIO_CODEC;
2332 avi->num_a_streams++;
2335 case GST_RIFF_FCC_iavs:{
2336 guint32 fourcc = stream->strh->fcc_handler;
2338 padname = g_strdup_printf ("video_%u", avi->num_v_streams);
2339 templ = gst_element_class_get_pad_template (klass, "video_%u");
2340 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
2341 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
2343 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2344 G_TYPE_INT, fourcc, NULL);
2346 tag_name = GST_TAG_VIDEO_CODEC;
2347 avi->num_v_streams++;
2350 case GST_RIFF_FCC_txts:{
2351 padname = g_strdup_printf ("subtitle_%u", avi->num_t_streams);
2352 templ = gst_element_class_get_pad_template (klass, "subtitle_%u");
2353 caps = gst_caps_new_empty_simple ("application/x-subtitle-avi");
2355 avi->num_t_streams++;
2359 g_return_val_if_reached (FALSE);
2362 /* no caps means no stream */
2364 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
2368 GST_DEBUG_OBJECT (element, "codec-name=%s", codec_name ? codec_name : "NULL");
2369 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
2371 /* set proper settings and add it */
2373 gst_object_unref (stream->pad);
2374 pad = stream->pad = gst_pad_new_from_template (templ, padname);
2377 gst_pad_use_fixed_caps (pad);
2379 gst_pad_set_formats_function (pad,
2380 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
2381 gst_pad_set_event_mask_function (pad,
2382 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
2384 gst_pad_set_event_function (pad,
2385 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
2386 gst_pad_set_query_function (pad,
2387 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
2389 gst_pad_set_convert_function (pad,
2390 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
2393 stream->num = avi->num_streams;
2395 stream->start_entry = 0;
2396 stream->step_entry = 0;
2397 stream->stop_entry = 0;
2399 stream->current_entry = -1;
2400 stream->current_total = 0;
2402 stream->discont = TRUE;
2404 stream->total_bytes = 0;
2405 stream->total_blocks = 0;
2406 stream->n_keyframes = 0;
2409 stream->idx_max = 0;
2411 gst_pad_set_element_private (pad, stream);
2414 gst_pad_set_active (pad, TRUE);
2416 gst_pad_create_stream_id_printf (pad, GST_ELEMENT_CAST (avi), "%03u",
2419 event = gst_pad_get_sticky_event (avi->sinkpad, GST_EVENT_STREAM_START, 0);
2421 if (gst_event_parse_group_id (event, &avi->group_id))
2422 avi->have_group_id = TRUE;
2424 avi->have_group_id = FALSE;
2425 gst_event_unref (event);
2426 } else if (!avi->have_group_id) {
2427 avi->have_group_id = TRUE;
2428 avi->group_id = gst_util_group_id_next ();
2431 event = gst_event_new_stream_start (stream_id);
2432 if (avi->have_group_id)
2433 gst_event_set_group_id (event, avi->group_id);
2435 gst_pad_push_event (pad, event);
2437 gst_pad_set_caps (pad, caps);
2438 gst_caps_unref (caps);
2441 if (codec_name && tag_name) {
2442 if (!stream->taglist)
2443 stream->taglist = gst_tag_list_new_empty ();
2445 avi->got_tags = TRUE;
2447 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
2449 g_free (codec_name);
2452 gst_buffer_unref (buf);
2459 /* unref any mem that may be in use */
2461 gst_buffer_unref (buf);
2463 gst_buffer_unref (sub);
2465 g_free (codec_name);
2466 gst_avi_demux_reset_stream (avi, stream);
2473 * gst_avi_demux_parse_odml:
2474 * @avi: calling element (used for debug/error).
2475 * @buf: input buffer to be used for parsing.
2477 * Read an openDML-2.0 extension header. Fills in the frame number
2478 * in the avi demuxer object when reading succeeds.
2481 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
2485 GstBuffer *sub = NULL;
2487 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2490 case GST_RIFF_TAG_dmlh:{
2491 gst_riff_dmlh dmlh, *_dmlh;
2494 /* sub == NULL is possible and means an empty buffer */
2498 gst_buffer_map (sub, &map, GST_MAP_READ);
2501 if (map.size < sizeof (gst_riff_dmlh)) {
2502 GST_ERROR_OBJECT (avi,
2503 "DMLH entry is too small (%" G_GSIZE_FORMAT " bytes, %d needed)",
2504 map.size, (int) sizeof (gst_riff_dmlh));
2505 gst_buffer_unmap (sub, &map);
2508 _dmlh = (gst_riff_dmlh *) map.data;
2509 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
2510 gst_buffer_unmap (sub, &map);
2512 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
2515 avi->avih->tot_frames = dmlh.totalframes;
2520 GST_WARNING_OBJECT (avi,
2521 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
2522 GST_FOURCC_ARGS (tag));
2523 /* Only get buffer for debugging if the memdump is needed */
2524 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
2527 gst_buffer_map (sub, &map, GST_MAP_READ);
2528 GST_MEMDUMP_OBJECT (avi, "Unknown ODML tag", map.data, map.size);
2529 gst_buffer_unmap (sub, &map);
2532 case GST_RIFF_TAG_JUNQ:
2533 case GST_RIFF_TAG_JUNK:
2535 /* skip and move to next chunk */
2537 gst_buffer_unref (sub);
2544 gst_buffer_unref (buf);
2549 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
2551 return stream->idx_n;
2554 /* find a previous entry in the index with the given flags */
2556 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
2557 guint last, gboolean keyframe)
2559 GstAviIndexEntry *entry;
2562 for (i = last; i > 0; i--) {
2563 entry = &stream->index[i - 1];
2564 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2572 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
2573 guint last, gboolean keyframe)
2575 GstAviIndexEntry *entry;
2578 for (i = last + 1; i < stream->idx_n; i++) {
2579 entry = &stream->index[i];
2580 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2584 return stream->idx_n - 1;
2588 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
2590 if (entry->total < *total)
2592 else if (entry->total > *total)
2598 * gst_avi_demux_index_for_time:
2600 * @stream: the stream
2601 * @time: a time position
2603 * Finds the index entry which time is less or equal than the requested time.
2604 * Try to avoid binary search when we can convert the time to an index
2605 * position directly (for example for video frames with a fixed duration).
2607 * Returns: the found position in the index.
2610 gst_avi_demux_index_for_time (GstAviDemux * avi,
2611 GstAviStream * stream, guint64 time)
2616 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
2618 /* easy (and common) cases */
2619 if (time == 0 || stream->idx_n == 0)
2621 if (time >= stream->idx_duration)
2622 return stream->idx_n - 1;
2624 /* figure out where we need to go. For that we convert the time to an
2625 * index entry or we convert it to a total and then do a binary search. */
2626 if (stream->is_vbr) {
2627 /* VBR stream next timestamp */
2628 if (stream->strh->type == GST_RIFF_FCC_auds) {
2629 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
2631 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
2633 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
2634 /* constant rate stream */
2635 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
2640 GstAviIndexEntry *entry;
2642 /* no index, find index with binary search on total */
2643 GST_LOG_OBJECT (avi, "binary search for entry with total %"
2644 G_GUINT64_FORMAT, total);
2646 entry = gst_util_array_binary_search (stream->index,
2647 stream->idx_n, sizeof (GstAviIndexEntry),
2648 (GCompareDataFunc) gst_avi_demux_index_entry_search,
2649 GST_SEARCH_MODE_BEFORE, &total, NULL);
2651 if (entry == NULL) {
2652 GST_LOG_OBJECT (avi, "not found, assume index 0");
2655 index = entry - stream->index;
2656 GST_LOG_OBJECT (avi, "found at %u", index);
2659 GST_LOG_OBJECT (avi, "converted time to index %u", index);
2665 static inline GstAviStream *
2666 gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
2669 GstAviStream *stream;
2671 /* get the stream for this entry */
2672 stream_nr = CHUNKID_TO_STREAMNR (id);
2673 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2674 GST_WARNING_OBJECT (avi,
2675 "invalid stream nr %d (0x%08x, %" GST_FOURCC_FORMAT ")", stream_nr, id,
2676 GST_FOURCC_ARGS (id));
2679 stream = &avi->stream[stream_nr];
2680 if (G_UNLIKELY (!stream->strh)) {
2681 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2688 * gst_avi_demux_parse_index:
2689 * @avi: calling element (used for debugging/errors).
2690 * @buf: buffer containing the full index.
2692 * Read index entries from the provided buffer.
2693 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2696 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2700 gst_riff_index_entry *index;
2702 GstAviStream *stream;
2703 GstAviIndexEntry entry;
2709 gst_buffer_map (buf, &map, GST_MAP_READ);
2711 stamp = gst_util_get_timestamp ();
2713 /* see how many items in the index */
2714 num = map.size / sizeof (gst_riff_index_entry);
2718 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2720 index = (gst_riff_index_entry *) map.data;
2722 /* figure out if the index is 0 based or relative to the MOVI start */
2723 entry.offset = GST_READ_UINT32_LE (&index[0].offset);
2724 if (entry.offset < avi->offset) {
2725 avi->index_offset = avi->offset + 8;
2726 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2728 avi->index_offset = 0;
2729 GST_DEBUG ("index is 0 based");
2732 for (i = 0, n = 0; i < num; i++) {
2733 id = GST_READ_UINT32_LE (&index[i].id);
2734 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2736 /* some sanity checks */
2737 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2738 (entry.offset == 0 && n > 0)))
2741 /* get the stream for this entry */
2742 stream = gst_avi_demux_stream_for_id (avi, id);
2743 if (G_UNLIKELY (!stream))
2746 /* handle offset and size */
2747 entry.offset += avi->index_offset + 8;
2748 entry.size = GST_READ_UINT32_LE (&index[i].size);
2751 if (stream->strh->type == GST_RIFF_FCC_auds) {
2752 /* all audio frames are keyframes */
2753 ENTRY_SET_KEYFRAME (&entry);
2754 } else if (stream->strh->type == GST_RIFF_FCC_vids &&
2755 stream->strf.vids->compression == GST_RIFF_DXSB) {
2756 /* all xsub frames are keyframes */
2757 ENTRY_SET_KEYFRAME (&entry);
2760 /* else read flags */
2761 flags = GST_READ_UINT32_LE (&index[i].flags);
2762 if (flags & GST_RIFF_IF_KEYFRAME) {
2763 ENTRY_SET_KEYFRAME (&entry);
2765 ENTRY_UNSET_KEYFRAME (&entry);
2770 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2775 gst_buffer_unmap (buf, &map);
2776 gst_buffer_unref (buf);
2778 /* get stream stats now */
2779 avi->have_index = gst_avi_demux_do_index_stats (avi);
2781 stamp = gst_util_get_timestamp () - stamp;
2782 GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT,
2783 GST_TIME_ARGS (stamp));
2790 GST_DEBUG_OBJECT (avi, "empty index");
2791 gst_buffer_unmap (buf, &map);
2792 gst_buffer_unref (buf);
2797 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2798 ("Cannot allocate memory for %u*%u=%u bytes",
2799 (guint) sizeof (GstAviIndexEntry), num,
2800 (guint) sizeof (GstAviIndexEntry) * num));
2801 gst_buffer_unmap (buf, &map);
2802 gst_buffer_unref (buf);
2808 * gst_avi_demux_stream_index:
2809 * @avi: avi demuxer object.
2811 * Seeks to index and reads it.
2814 gst_avi_demux_stream_index (GstAviDemux * avi)
2817 guint64 offset = avi->offset;
2818 GstBuffer *buf = NULL;
2823 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2825 /* get chunk information */
2826 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2827 if (res != GST_FLOW_OK)
2830 gst_buffer_map (buf, &map, GST_MAP_READ);
2834 /* check tag first before blindy trying to read 'size' bytes */
2835 tag = GST_READ_UINT32_LE (map.data);
2836 size = GST_READ_UINT32_LE (map.data + 4);
2837 if (tag == GST_RIFF_TAG_LIST) {
2838 /* this is the movi tag */
2839 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2840 (8 + GST_ROUND_UP_2 (size)));
2841 offset += 8 + GST_ROUND_UP_2 (size);
2842 gst_buffer_unmap (buf, &map);
2843 gst_buffer_unref (buf);
2846 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2847 if (res != GST_FLOW_OK)
2850 gst_buffer_map (buf, &map, GST_MAP_READ);
2854 tag = GST_READ_UINT32_LE (map.data);
2855 size = GST_READ_UINT32_LE (map.data + 4);
2857 gst_buffer_unmap (buf, &map);
2858 gst_buffer_unref (buf);
2860 if (tag != GST_RIFF_TAG_idx1)
2865 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2867 /* read chunk, advance offset */
2868 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2869 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2872 GST_DEBUG ("will parse index chunk size %" G_GSIZE_FORMAT " for tag %"
2873 GST_FOURCC_FORMAT, gst_buffer_get_size (buf), GST_FOURCC_ARGS (tag));
2875 gst_avi_demux_parse_index (avi, buf);
2877 #ifndef GST_DISABLE_GST_DEBUG
2878 /* debug our indexes */
2881 GstAviStream *stream;
2883 for (i = 0; i < avi->num_streams; i++) {
2884 stream = &avi->stream[i];
2885 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2886 i, stream->idx_n, stream->total_bytes);
2895 GST_DEBUG_OBJECT (avi,
2896 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2901 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2902 gst_buffer_unmap (buf, &map);
2903 gst_buffer_unref (buf);
2908 GST_WARNING_OBJECT (avi,
2909 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2910 GST_FOURCC_ARGS (tag));
2915 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2921 * gst_avi_demux_stream_index_push:
2922 * @avi: avi demuxer object.
2927 gst_avi_demux_stream_index_push (GstAviDemux * avi)
2929 guint64 offset = avi->idx1_offset;
2934 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2936 /* get chunk information */
2937 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
2940 /* check tag first before blindly trying to read 'size' bytes */
2941 if (tag == GST_RIFF_TAG_LIST) {
2942 /* this is the movi tag */
2943 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2944 (8 + GST_ROUND_UP_2 (size)));
2945 avi->idx1_offset = offset + 8 + GST_ROUND_UP_2 (size);
2946 /* issue seek to allow chain function to handle it and return! */
2947 perform_seek_to_offset (avi, avi->idx1_offset);
2951 if (tag != GST_RIFF_TAG_idx1)
2954 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2956 /* flush chunk header */
2957 gst_adapter_flush (avi->adapter, 8);
2958 /* read chunk payload */
2959 buf = gst_adapter_take_buffer (avi->adapter, size);
2962 /* advance offset */
2963 offset += 8 + GST_ROUND_UP_2 (size);
2965 GST_DEBUG ("will parse index chunk size %" G_GSIZE_FORMAT " for tag %"
2966 GST_FOURCC_FORMAT, gst_buffer_get_size (buf), GST_FOURCC_ARGS (tag));
2968 avi->offset = avi->first_movi_offset;
2969 gst_avi_demux_parse_index (avi, buf);
2971 #ifndef GST_DISABLE_GST_DEBUG
2972 /* debug our indexes */
2975 GstAviStream *stream;
2977 for (i = 0; i < avi->num_streams; i++) {
2978 stream = &avi->stream[i];
2979 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2980 i, stream->idx_n, stream->total_bytes);
2989 GST_DEBUG_OBJECT (avi,
2990 "taking data from adapter failed: pos=%" G_GUINT64_FORMAT " size=%u",
2996 GST_WARNING_OBJECT (avi,
2997 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2998 GST_FOURCC_ARGS (tag));
3004 * gst_avi_demux_peek_tag:
3006 * Returns the tag and size of the next chunk
3008 static GstFlowReturn
3009 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
3013 GstBuffer *buf = NULL;
3016 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
3017 if (res != GST_FLOW_OK)
3020 gst_buffer_map (buf, &map, GST_MAP_READ);
3024 *tag = GST_READ_UINT32_LE (map.data);
3025 *size = GST_READ_UINT32_LE (map.data + 4);
3027 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
3028 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
3029 *size, offset + 8, offset + 8 + (gint64) * size);
3032 gst_buffer_unmap (buf, &map);
3033 gst_buffer_unref (buf);
3040 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
3045 GST_DEBUG_OBJECT (avi, "got %" G_GSIZE_FORMAT " bytes which is <> 8 bytes",
3047 res = GST_FLOW_ERROR;
3053 * gst_avi_demux_next_data_buffer:
3055 * Returns the offset and size of the next buffer
3056 * Position is the position of the buffer (after tag and size)
3058 static GstFlowReturn
3059 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
3060 guint32 * tag, guint * size)
3062 guint64 off = *offset;
3067 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
3068 if (res != GST_FLOW_OK)
3070 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
3071 off += 8 + 4; /* skip tag + size + subtag */
3083 * gst_avi_demux_stream_scan:
3084 * @avi: calling element (used for debugging/errors).
3086 * Scan the file for all chunks to "create" a new index.
3090 gst_avi_demux_stream_scan (GstAviDemux * avi)
3093 GstAviStream *stream;
3101 * - implement non-seekable source support.
3103 GST_DEBUG_OBJECT (avi, "Creating index");
3105 /* get the size of the file */
3106 if (!gst_pad_peer_query_duration (avi->sinkpad, GST_FORMAT_BYTES, &tmplength))
3110 /* guess the total amount of entries we expect */
3114 GstAviIndexEntry entry;
3117 /* start reading data buffers to find the id and offset */
3118 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
3119 if (G_UNLIKELY (res != GST_FLOW_OK))
3123 stream = gst_avi_demux_stream_for_id (avi, tag);
3124 if (G_UNLIKELY (!stream))
3127 /* we can't figure out the keyframes, assume they all are */
3128 entry.flags = GST_AVI_KEYFRAME;
3132 /* and add to the index of this stream */
3133 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
3137 /* update position */
3138 pos += GST_ROUND_UP_2 (size);
3139 if (G_UNLIKELY (pos > length)) {
3140 GST_WARNING_OBJECT (avi,
3141 "Stopping index lookup since we are further than EOF");
3147 avi->have_index = gst_avi_demux_do_index_stats (avi);
3154 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
3155 ("Cannot allocate memory for %u*%u=%u bytes",
3156 (guint) sizeof (GstAviIndexEntry), num,
3157 (guint) sizeof (GstAviIndexEntry) * num));
3163 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
3167 GstAviStream *stream;
3169 total = GST_CLOCK_TIME_NONE;
3171 /* all streams start at a timestamp 0 */
3172 for (i = 0; i < avi->num_streams; i++) {
3173 GstClockTime duration, hduration;
3174 gst_riff_strh *strh;
3176 stream = &avi->stream[i];
3177 if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh)))
3180 /* get header duration for the stream */
3181 hduration = stream->hdr_duration;
3182 /* index duration calculated during parsing */
3183 duration = stream->idx_duration;
3185 /* now pick a good duration */
3186 if (GST_CLOCK_TIME_IS_VALID (duration)) {
3187 /* index gave valid duration, use that */
3188 GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT,
3189 stream, GST_TIME_ARGS (duration));
3191 /* fall back to header info to calculate a duration */
3192 duration = hduration;
3194 GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT,
3195 i, GST_TIME_ARGS (duration));
3196 /* set duration for the stream */
3197 stream->duration = duration;
3199 /* find total duration */
3200 if (total == GST_CLOCK_TIME_NONE ||
3201 (GST_CLOCK_TIME_IS_VALID (duration) && duration > total))
3205 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
3206 /* now update the duration for those streams where we had none */
3207 for (i = 0; i < avi->num_streams; i++) {
3208 stream = &avi->stream[i];
3210 if (!GST_CLOCK_TIME_IS_VALID (stream->duration)
3211 || stream->duration == 0) {
3212 stream->duration = total;
3214 GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT,
3215 stream, GST_TIME_ARGS (total));
3220 /* and set the total duration in the segment. */
3221 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
3222 GST_TIME_ARGS (total));
3224 avi->segment.duration = total;
3227 /* returns FALSE if there are no pads to deliver event to,
3228 * otherwise TRUE (whatever the outcome of event sending),
3229 * takes ownership of the event. */
3231 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
3233 gboolean result = FALSE;
3236 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
3237 GST_EVENT_TYPE_NAME (event), avi->num_streams);
3239 for (i = 0; i < avi->num_streams; i++) {
3240 GstAviStream *stream = &avi->stream[i];
3244 gst_pad_push_event (stream->pad, gst_event_ref (event));
3247 gst_event_unref (event);
3252 gst_avi_demux_check_seekability (GstAviDemux * avi)
3255 gboolean seekable = FALSE;
3256 gint64 start = -1, stop = -1;
3258 query = gst_query_new_seeking (GST_FORMAT_BYTES);
3259 if (!gst_pad_peer_query (avi->sinkpad, query)) {
3260 GST_DEBUG_OBJECT (avi, "seeking query failed");
3264 gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
3266 /* try harder to query upstream size if we didn't get it the first time */
3267 if (seekable && stop == -1) {
3268 GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
3269 gst_pad_peer_query_duration (avi->sinkpad, GST_FORMAT_BYTES, &stop);
3272 /* if upstream doesn't know the size, it's likely that it's not seekable in
3273 * practice even if it technically may be seekable */
3274 if (seekable && (start != 0 || stop <= start)) {
3275 GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
3280 GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
3281 G_GUINT64_FORMAT ")", seekable, start, stop);
3282 avi->seekable = seekable;
3284 gst_query_unref (query);
3288 * Read AVI headers when streaming
3290 static GstFlowReturn
3291 gst_avi_demux_stream_header_push (GstAviDemux * avi)
3293 GstFlowReturn ret = GST_FLOW_OK;
3298 GstBuffer *buf = NULL, *sub = NULL;
3301 GstTagList *tags = NULL;
3304 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
3306 switch (avi->header_state) {
3307 case GST_AVI_DEMUX_HEADER_TAG_LIST:
3309 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3310 avi->offset += 8 + GST_ROUND_UP_2 (size);
3311 if (tag != GST_RIFF_TAG_LIST)
3312 goto header_no_list;
3314 gst_adapter_flush (avi->adapter, 8);
3315 /* Find the 'hdrl' LIST tag */
3316 GST_DEBUG ("Reading %d bytes", size);
3317 buf = gst_adapter_take_buffer (avi->adapter, size);
3319 gst_buffer_extract (buf, 0, fourcc, 4);
3321 if (GST_READ_UINT32_LE (fourcc) != GST_RIFF_LIST_hdrl) {
3322 GST_WARNING_OBJECT (avi, "Invalid AVI header (no hdrl at start): %"
3323 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag));
3324 gst_buffer_unref (buf);
3330 gst_adapter_flush (avi->adapter, 1);
3332 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
3334 gst_avi_demux_roundup_list (avi, &buf);
3336 /* the hdrl starts with a 'avih' header */
3337 if (!gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3339 goto header_no_avih;
3341 if (tag != GST_RIFF_TAG_avih)
3342 goto header_no_avih;
3344 if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3345 goto header_wrong_avih;
3347 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
3349 /* now, read the elements from the header until the end */
3350 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
3352 /* sub can be NULL on empty tags */
3357 case GST_RIFF_TAG_LIST:
3358 if (gst_buffer_get_size (sub) < 4)
3361 gst_buffer_extract (sub, 0, fourcc, 4);
3363 switch (GST_READ_UINT32_LE (fourcc)) {
3364 case GST_RIFF_LIST_strl:
3365 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3367 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3368 ("failed to parse stream, ignoring"));
3373 case GST_RIFF_LIST_odml:
3374 gst_avi_demux_parse_odml (avi, sub);
3378 GST_WARNING_OBJECT (avi,
3379 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3380 GST_FOURCC_ARGS (GST_READ_UINT32_LE (fourcc)));
3382 case GST_RIFF_TAG_JUNQ:
3383 case GST_RIFF_TAG_JUNK:
3388 gst_avi_demux_parse_idit (avi, sub);
3391 GST_WARNING_OBJECT (avi,
3392 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header",
3393 GST_FOURCC_ARGS (tag));
3394 /* Only get buffer for debugging if the memdump is needed */
3395 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
3398 gst_buffer_map (sub, &map, GST_MAP_READ);
3399 GST_MEMDUMP_OBJECT (avi, "Unknown tag", map.data, map.size);
3400 gst_buffer_unmap (sub, &map);
3403 case GST_RIFF_TAG_JUNQ:
3404 case GST_RIFF_TAG_JUNK:
3406 /* move to next chunk */
3408 gst_buffer_unref (sub);
3413 gst_buffer_unref (buf);
3414 GST_DEBUG ("elements parsed");
3416 /* check parsed streams */
3417 if (avi->num_streams == 0) {
3419 } else if (avi->num_streams != avi->avih->streams) {
3420 GST_WARNING_OBJECT (avi,
3421 "Stream header mentioned %d streams, but %d available",
3422 avi->avih->streams, avi->num_streams);
3424 GST_DEBUG ("Get junk and info next");
3425 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
3427 /* Need more data */
3431 case GST_AVI_DEMUX_HEADER_INFO:
3432 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
3434 if (gst_adapter_available (avi->adapter) < 12)
3437 data = gst_adapter_map (avi->adapter, 12);
3438 tag = GST_READ_UINT32_LE (data);
3439 size = GST_READ_UINT32_LE (data + 4);
3440 ltag = GST_READ_UINT32_LE (data + 8);
3441 gst_adapter_unmap (avi->adapter);
3443 if (tag == GST_RIFF_TAG_LIST) {
3445 case GST_RIFF_LIST_movi:
3446 gst_adapter_flush (avi->adapter, 12);
3447 if (!avi->first_movi_offset)
3448 avi->first_movi_offset = avi->offset;
3450 avi->idx1_offset = avi->offset + size - 4;
3452 case GST_RIFF_LIST_INFO:
3453 GST_DEBUG ("Found INFO chunk");
3454 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3455 GST_DEBUG ("got size %d", size);
3457 gst_adapter_flush (avi->adapter, 12);
3459 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
3462 gst_adapter_flush (avi->adapter, 1);
3463 gst_riff_parse_info (GST_ELEMENT_CAST (avi), buf, &tags);
3465 if (avi->globaltags) {
3466 gst_tag_list_insert (avi->globaltags, tags,
3467 GST_TAG_MERGE_REPLACE);
3469 avi->globaltags = tags;
3473 gst_buffer_unref (buf);
3475 avi->offset += GST_ROUND_UP_2 (size) - 4;
3477 GST_DEBUG ("skipping INFO LIST prefix");
3480 /* Need more data */
3485 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
3486 /* accept 0 size buffer here */
3487 avi->abort_buffering = FALSE;
3488 avi->offset += 8 + GST_ROUND_UP_2 (size);
3489 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3491 /* Need more data */
3497 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
3498 /* accept 0 size buffer here */
3499 avi->abort_buffering = FALSE;
3500 avi->offset += 8 + GST_ROUND_UP_2 (size);
3501 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3503 /* Need more data */
3510 GST_WARNING ("unhandled header state: %d", avi->header_state);
3515 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3516 avi->num_streams, avi->stream[0].indexes);
3518 GST_DEBUG ("Found movi chunk. Starting to stream data");
3519 avi->state = GST_AVI_DEMUX_MOVI;
3521 /* no indexes in push mode, but it still sets some variables */
3522 gst_avi_demux_calculate_durations_from_index (avi);
3524 gst_avi_demux_expose_streams (avi, TRUE);
3526 /* prepare all streams for index 0 */
3527 for (i = 0; i < avi->num_streams; i++)
3528 avi->stream[i].current_entry = 0;
3530 /* create initial NEWSEGMENT event */
3532 gst_event_unref (avi->seg_event);
3533 avi->seg_event = gst_event_new_segment (&avi->segment);
3535 gst_avi_demux_check_seekability (avi);
3537 /* at this point we know all the streams and we can signal the no more
3539 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3540 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3547 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3548 return GST_FLOW_ERROR;
3552 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3553 ("Invalid AVI header (no LIST at start): %"
3554 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3555 return GST_FLOW_ERROR;
3559 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3560 ("Invalid AVI header (no avih at start): %"
3561 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3563 gst_buffer_unref (sub);
3565 gst_buffer_unref (buf);
3566 return GST_FLOW_ERROR;
3570 gst_buffer_unref (buf);
3571 return GST_FLOW_ERROR;
3576 gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d,
3577 gint h, gint min, gint s)
3582 date = g_date_new_dmy (d, m, y);
3583 if (!g_date_valid (date)) {
3585 GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
3590 dt = gst_date_time_new_local_time (y, m, d, h, min, s);
3592 if (avi->globaltags == NULL)
3593 avi->globaltags = gst_tag_list_new_empty ();
3595 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
3599 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE_TIME,
3601 gst_date_time_unref (dt);
3606 gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data)
3609 gint hr = 0, min = 0, sec = 0;
3612 GST_DEBUG ("data : '%s'", data);
3614 ret = sscanf (data, "%d:%d:%d %d:%d:%d", &y, &m, &d, &hr, &min, &sec);
3616 /* Attempt YYYY/MM/DD/ HH:MM variant (found in CASIO cameras) */
3617 ret = sscanf (data, "%04d/%02d/%02d/ %d:%d", &y, &m, &d, &hr, &min);
3619 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3623 gst_avi_demux_add_date_tag (avi, y, m, d, hr, min, sec);
3627 get_month_num (gchar * data, guint size)
3629 if (g_ascii_strncasecmp (data, "jan", 3) == 0) {
3631 } else if (g_ascii_strncasecmp (data, "feb", 3) == 0) {
3633 } else if (g_ascii_strncasecmp (data, "mar", 3) == 0) {
3635 } else if (g_ascii_strncasecmp (data, "apr", 3) == 0) {
3637 } else if (g_ascii_strncasecmp (data, "may", 3) == 0) {
3639 } else if (g_ascii_strncasecmp (data, "jun", 3) == 0) {
3641 } else if (g_ascii_strncasecmp (data, "jul", 3) == 0) {
3643 } else if (g_ascii_strncasecmp (data, "aug", 3) == 0) {
3645 } else if (g_ascii_strncasecmp (data, "sep", 3) == 0) {
3647 } else if (g_ascii_strncasecmp (data, "oct", 3) == 0) {
3649 } else if (g_ascii_strncasecmp (data, "nov", 3) == 0) {
3651 } else if (g_ascii_strncasecmp (data, "dec", 3) == 0) {
3659 gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data)
3661 gint year, month, day;
3662 gint hour, min, sec;
3667 ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour,
3670 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3673 month = get_month_num (monthstr, strlen (monthstr));
3674 gst_avi_demux_add_date_tag (avi, year, month, day, hour, min, sec);
3678 gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
3683 gchar *safedata = NULL;
3685 gst_buffer_map (buf, &map, GST_MAP_READ);
3688 * http://www.eden-foundation.org/products/code/film_date_stamp/index.html
3690 * This tag could be in one of the below formats
3691 * 2005:08:17 11:42:43
3692 * THU OCT 26 16:46:04 2006
3693 * Mon Mar 3 09:44:56 2008
3695 * FIXME: Our date tag doesn't include hours
3698 /* skip eventual initial whitespace */
3699 ptr = (gchar *) map.data;
3702 while (left > 0 && g_ascii_isspace (ptr[0])) {
3711 /* make a safe copy to add a \0 to the end of the string */
3712 safedata = g_strndup (ptr, left);
3714 /* test if the first char is a alpha or a number */
3715 if (g_ascii_isdigit (ptr[0])) {
3716 gst_avi_demux_parse_idit_nums_only (avi, safedata);
3719 } else if (g_ascii_isalpha (ptr[0])) {
3720 gst_avi_demux_parse_idit_text (avi, safedata);
3728 GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
3729 gst_buffer_unmap (buf, &map);
3733 parse_tag_value (GstAviDemux * avi, GstTagList * taglist, const gchar * type,
3734 guint8 * ptr, guint tsize)
3736 static const gchar *env_vars[] = { "GST_AVI_TAG_ENCODING",
3737 "GST_RIFF_TAG_ENCODING", "GST_TAG_ENCODING", NULL
3742 tag_type = gst_tag_get_type (type);
3743 val = gst_tag_freeform_string_to_utf8 ((gchar *) ptr, tsize, env_vars);
3746 if (tag_type == G_TYPE_STRING) {
3747 gst_tag_list_add (taglist, GST_TAG_MERGE_APPEND, type, val, NULL);
3749 GValue tag_val = { 0, };
3751 g_value_init (&tag_val, tag_type);
3752 if (gst_value_deserialize (&tag_val, val)) {
3753 gst_tag_list_add_value (taglist, GST_TAG_MERGE_APPEND, type, &tag_val);
3755 GST_WARNING_OBJECT (avi, "could not deserialize '%s' into a "
3756 "tag %s of type %s", val, type, g_type_name (tag_type));
3758 g_value_unset (&tag_val);
3762 GST_WARNING_OBJECT (avi, "could not extract %s tag", type);
3767 gst_avi_demux_parse_strd (GstAviDemux * avi, GstBuffer * buf)
3772 gst_buffer_map (buf, &map, GST_MAP_READ);
3774 guint8 *ptr = map.data;
3775 gsize left = map.size;
3778 * http://www.eden-foundation.org/products/code/film_date_stamp/index.html
3780 tag = GST_READ_UINT32_LE (ptr);
3781 if ((tag == GST_MAKE_FOURCC ('A', 'V', 'I', 'F')) && (map.size > 98)) {
3786 if (!memcmp (ptr, "FUJIFILM", 8)) {
3787 GST_MEMDUMP_OBJECT (avi, "fujifim tag", ptr, 48);
3792 while (ptr[sub_size] && sub_size < left)
3795 if (avi->globaltags == NULL)
3796 avi->globaltags = gst_tag_list_new_empty ();
3798 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_APPEND,
3799 GST_TAG_DEVICE_MANUFACTURER, "FUJIFILM",
3800 GST_TAG_DEVICE_MODEL, ptr, NULL);
3802 while (ptr[sub_size] == '\0' && sub_size < left)
3808 while (ptr[sub_size] && sub_size < left)
3815 parse_tag_value (avi, avi->globaltags, GST_TAG_DATE_TIME, ptr,
3820 gst_buffer_unmap (buf, &map);
3824 * gst_avi_demux_parse_ncdt:
3825 * @element: caller element (used for debugging/error).
3826 * @buf: input data to be used for parsing, stripped from header.
3827 * @taglist: a pointer to a taglist (returned by this function)
3828 * containing information about this stream. May be
3829 * NULL if no supported tags were found.
3831 * Parses Nikon metadata from input data.
3834 gst_avi_demux_parse_ncdt (GstAviDemux * avi, GstBuffer * buf,
3835 GstTagList ** _taglist)
3843 GstTagList *taglist;
3845 g_return_if_fail (_taglist != NULL);
3851 gst_buffer_map (buf, &info, GST_MAP_READ);
3853 taglist = gst_tag_list_new_empty ();
3859 tag = GST_READ_UINT32_LE (ptr);
3860 tsize = GST_READ_UINT32_LE (ptr + 4);
3862 GST_MEMDUMP_OBJECT (avi, "tag chunk", ptr, MIN (tsize + 8, left));
3867 GST_DEBUG_OBJECT (avi, "tag %" GST_FOURCC_FORMAT ", size %u",
3868 GST_FOURCC_ARGS (tag), tsize);
3871 GST_WARNING_OBJECT (avi,
3872 "Tagsize %d is larger than available data %" G_GSIZE_FORMAT,
3877 /* find out the type of metadata */
3879 case GST_RIFF_LIST_nctg:
3881 guint16 sub_tag = GST_READ_UINT16_LE (ptr);
3882 guint16 sub_size = GST_READ_UINT16_LE (ptr + 2);
3887 GST_DEBUG_OBJECT (avi, "sub-tag %u, size %u", sub_tag, sub_size);
3888 /* http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Nikon.html#NCTG
3889 * for some reason the sub_tag has a +2 offset
3892 case 0x03: /* Make */
3893 type = GST_TAG_DEVICE_MANUFACTURER;
3895 case 0x04: /* Model */
3896 type = GST_TAG_DEVICE_MODEL;
3898 /* TODO: 0x05: is software version, like V1.0 */
3899 case 0x06: /* Software */
3900 type = GST_TAG_ENCODER;
3902 case 0x13: /* CreationDate */
3903 type = GST_TAG_DATE_TIME;
3913 if (type != NULL && ptr[0] != '\0') {
3914 GST_DEBUG_OBJECT (avi, "mapped tag %u to tag %s", sub_tag, type);
3916 parse_tag_value (avi, taglist, type, ptr, sub_size);
3925 GST_WARNING_OBJECT (avi,
3926 "Unknown ncdt (metadata) tag entry %" GST_FOURCC_FORMAT,
3927 GST_FOURCC_ARGS (tag));
3928 GST_MEMDUMP_OBJECT (avi, "Unknown ncdt", ptr, tsize);
3942 if (!gst_tag_list_is_empty (taglist)) {
3943 GST_INFO_OBJECT (avi, "extracted tags: %" GST_PTR_FORMAT, taglist);
3944 *_taglist = taglist;
3947 gst_tag_list_unref (taglist);
3949 gst_buffer_unmap (buf, &info);
3955 * Read full AVI headers.
3957 static GstFlowReturn
3958 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3961 GstBuffer *buf, *sub = NULL;
3964 GstElement *element = GST_ELEMENT_CAST (avi);
3966 GstTagList *tags = NULL;
3969 stamp = gst_util_get_timestamp ();
3971 /* the header consists of a 'hdrl' LIST tag */
3972 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3973 if (res != GST_FLOW_OK)
3974 goto pull_range_failed;
3975 else if (tag != GST_RIFF_TAG_LIST)
3977 else if (gst_buffer_get_size (buf) < 4)
3980 GST_DEBUG_OBJECT (avi, "parsing headers");
3982 /* Find the 'hdrl' LIST tag */
3983 gst_buffer_extract (buf, 0, fourcc, 4);
3984 while (GST_READ_UINT32_LE (fourcc) != GST_RIFF_LIST_hdrl) {
3985 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3986 GST_FOURCC_ARGS (GST_READ_UINT32_LE (fourcc)));
3989 gst_buffer_unref (buf);
3991 /* read new chunk */
3992 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3993 if (res != GST_FLOW_OK)
3994 goto pull_range_failed;
3995 else if (tag != GST_RIFF_TAG_LIST)
3997 else if (gst_buffer_get_size (buf) < 4)
3999 gst_buffer_extract (buf, 0, fourcc, 4);
4002 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
4004 gst_avi_demux_roundup_list (avi, &buf);
4006 /* the hdrl starts with a 'avih' header */
4007 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
4009 else if (tag != GST_RIFF_TAG_avih)
4011 else if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
4014 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
4016 /* now, read the elements from the header until the end */
4017 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
4020 /* sub can be NULL on empty tags */
4024 gst_buffer_map (sub, &map, GST_MAP_READ);
4027 case GST_RIFF_TAG_LIST:
4031 switch (GST_READ_UINT32_LE (map.data)) {
4032 case GST_RIFF_LIST_strl:
4033 gst_buffer_unmap (sub, &map);
4034 if (!(gst_avi_demux_parse_stream (avi, sub))) {
4035 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
4036 ("failed to parse stream, ignoring"));
4041 case GST_RIFF_LIST_odml:
4042 gst_buffer_unmap (sub, &map);
4043 gst_avi_demux_parse_odml (avi, sub);
4046 case GST_RIFF_LIST_INFO:
4047 gst_buffer_unmap (sub, &map);
4048 gst_buffer_resize (sub, 4, -1);
4049 gst_riff_parse_info (element, sub, &tags);
4051 if (avi->globaltags) {
4052 gst_tag_list_insert (avi->globaltags, tags,
4053 GST_TAG_MERGE_REPLACE);
4055 avi->globaltags = tags;
4059 gst_buffer_unref (sub);
4062 case GST_RIFF_LIST_ncdt:
4063 gst_buffer_unmap (sub, &map);
4064 gst_buffer_resize (sub, 4, -1);
4065 gst_avi_demux_parse_ncdt (avi, sub, &tags);
4067 if (avi->globaltags) {
4068 gst_tag_list_insert (avi->globaltags, tags,
4069 GST_TAG_MERGE_REPLACE);
4071 avi->globaltags = tags;
4075 gst_buffer_unref (sub);
4079 GST_WARNING_OBJECT (avi,
4080 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
4081 GST_FOURCC_ARGS (GST_READ_UINT32_LE (map.data)));
4082 GST_MEMDUMP_OBJECT (avi, "Unknown list", map.data, map.size);
4084 case GST_RIFF_TAG_JUNQ:
4085 case GST_RIFF_TAG_JUNK:
4090 gst_avi_demux_parse_idit (avi, sub);
4093 GST_WARNING_OBJECT (avi,
4094 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header",
4095 GST_FOURCC_ARGS (tag));
4096 GST_MEMDUMP_OBJECT (avi, "Unknown tag", map.data, map.size);
4098 case GST_RIFF_TAG_JUNQ:
4099 case GST_RIFF_TAG_JUNK:
4102 gst_buffer_unmap (sub, &map);
4103 gst_buffer_unref (sub);
4109 gst_buffer_unref (buf);
4110 GST_DEBUG ("elements parsed");
4112 /* check parsed streams */
4113 if (avi->num_streams == 0)
4115 else if (avi->num_streams != avi->avih->streams) {
4116 GST_WARNING_OBJECT (avi,
4117 "Stream header mentioned %d streams, but %d available",
4118 avi->avih->streams, avi->num_streams);
4121 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
4122 G_GUINT64_FORMAT, avi->offset);
4124 /* Now, find the data (i.e. skip all junk between header and data) */
4131 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
4132 if (res != GST_FLOW_OK) {
4133 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
4134 goto pull_range_failed;
4135 } else if (gst_buffer_get_size (buf) < 12) {
4136 GST_DEBUG_OBJECT (avi,
4137 "got %" G_GSIZE_FORMAT " bytes which is less than 12 bytes",
4138 gst_buffer_get_size (buf));
4139 gst_buffer_unref (buf);
4140 return GST_FLOW_ERROR;
4143 gst_buffer_map (buf, &map, GST_MAP_READ);
4144 tag = GST_READ_UINT32_LE (map.data);
4145 size = GST_READ_UINT32_LE (map.data + 4);
4146 ltag = GST_READ_UINT32_LE (map.data + 8);
4148 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
4149 GST_FOURCC_ARGS (tag), size);
4150 GST_MEMDUMP ("Tag content", map.data, map.size);
4151 gst_buffer_unmap (buf, &map);
4152 gst_buffer_unref (buf);
4155 case GST_RIFF_TAG_LIST:{
4157 case GST_RIFF_LIST_movi:
4158 GST_DEBUG_OBJECT (avi,
4159 "Reached the 'movi' tag, we're done with skipping");
4161 case GST_RIFF_LIST_INFO:
4163 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
4165 if (res != GST_FLOW_OK) {
4166 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
4167 goto pull_range_failed;
4169 GST_DEBUG ("got size %" G_GSIZE_FORMAT, gst_buffer_get_size (buf));
4171 GST_DEBUG ("skipping INFO LIST prefix");
4172 avi->offset += (4 - GST_ROUND_UP_2 (size));
4173 gst_buffer_unref (buf);
4177 sub = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, 4, -1);
4178 gst_riff_parse_info (element, sub, &tags);
4180 if (avi->globaltags) {
4181 gst_tag_list_insert (avi->globaltags, tags,
4182 GST_TAG_MERGE_REPLACE);
4184 avi->globaltags = tags;
4189 gst_buffer_unref (sub);
4192 gst_buffer_unref (buf);
4193 /* gst_riff_read_chunk() has already advanced avi->offset */
4195 case GST_RIFF_LIST_ncdt:
4197 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
4199 if (res != GST_FLOW_OK) {
4200 GST_DEBUG_OBJECT (avi, "couldn't read ncdt chunk");
4201 goto pull_range_failed;
4203 GST_DEBUG ("got size %" G_GSIZE_FORMAT, gst_buffer_get_size (buf));
4205 GST_DEBUG ("skipping ncdt LIST prefix");
4206 avi->offset += (4 - GST_ROUND_UP_2 (size));
4207 gst_buffer_unref (buf);
4211 sub = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, 4, -1);
4212 gst_avi_demux_parse_ncdt (avi, sub, &tags);
4214 if (avi->globaltags) {
4215 gst_tag_list_insert (avi->globaltags, tags,
4216 GST_TAG_MERGE_REPLACE);
4218 avi->globaltags = tags;
4223 gst_buffer_unref (sub);
4226 gst_buffer_unref (buf);
4227 /* gst_riff_read_chunk() has already advanced avi->offset */
4230 GST_WARNING_OBJECT (avi,
4231 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
4232 GST_FOURCC_ARGS (ltag));
4233 avi->offset += 8 + GST_ROUND_UP_2 (size);
4239 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
4240 GST_FOURCC_ARGS (tag));
4242 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
4243 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
4244 /* Only get buffer for debugging if the memdump is needed */
4245 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
4247 res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf);
4248 if (res != GST_FLOW_OK) {
4249 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
4250 goto pull_range_failed;
4252 gst_buffer_map (buf, &map, GST_MAP_READ);
4253 GST_MEMDUMP ("Junk", map.data, map.size);
4254 gst_buffer_unmap (buf, &map);
4255 gst_buffer_unref (buf);
4257 avi->offset += 8 + GST_ROUND_UP_2 (size);
4263 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
4264 avi->num_streams, avi->stream[0].indexes);
4266 /* create or read stream index (for seeking) */
4267 if (avi->stream[0].indexes != NULL) {
4268 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
4269 gst_avi_demux_read_subindexes_pull (avi);
4271 if (!avi->have_index) {
4272 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
4273 gst_avi_demux_stream_index (avi);
4275 /* still no index, scan */
4276 if (!avi->have_index) {
4277 gst_avi_demux_stream_scan (avi);
4279 /* still no index.. this is a fatal error for now.
4280 * FIXME, we should switch to plain push mode without seeking
4281 * instead of failing. */
4282 if (!avi->have_index)
4286 /* use the indexes now to construct nice durations */
4287 gst_avi_demux_calculate_durations_from_index (avi);
4289 gst_avi_demux_expose_streams (avi, FALSE);
4291 /* do initial seek to the default segment values */
4292 gst_avi_demux_do_seek (avi, &avi->segment);
4294 /* create initial NEWSEGMENT event */
4296 gst_event_unref (avi->seg_event);
4297 avi->seg_event = gst_event_new_segment (&avi->segment);
4299 stamp = gst_util_get_timestamp () - stamp;
4300 GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT,
4301 GST_TIME_ARGS (stamp));
4303 /* at this point we know all the streams and we can signal the no more
4305 GST_DEBUG_OBJECT (avi, "signaling no more pads");
4306 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
4313 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
4314 ("Invalid AVI header (no LIST at start): %"
4315 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
4316 gst_buffer_unref (buf);
4317 return GST_FLOW_ERROR;
4321 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
4322 ("Invalid AVI header (no hdrl at start): %"
4323 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
4324 gst_buffer_unref (buf);
4325 return GST_FLOW_ERROR;
4329 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
4330 ("Invalid AVI header (no avih at start): %"
4331 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
4333 gst_buffer_unref (sub);
4334 gst_buffer_unref (buf);
4335 return GST_FLOW_ERROR;
4339 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
4340 ("Invalid AVI header (cannot parse avih at start)"));
4341 gst_buffer_unref (buf);
4342 return GST_FLOW_ERROR;
4346 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
4347 return GST_FLOW_ERROR;
4351 GST_WARNING ("file without or too big index");
4352 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
4353 ("Could not get/create index"));
4354 return GST_FLOW_ERROR;
4358 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
4359 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
4360 return GST_FLOW_ERROR;
4364 /* move a stream to @index */
4366 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
4367 GstSegment * segment, guint index)
4369 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
4371 if (segment->rate < 0.0) {
4373 /* Because we don't know the frame order we need to push from the prev keyframe
4374 * to the next keyframe. If there is a smart decoder downstream he will notice
4375 * that there are too many encoded frames send and return EOS when there
4376 * are enough decoded frames to fill the segment. */
4377 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
4379 /* FIXME, we go back to 0, we should look at segment.start. We will however
4380 * stop earlier when the see the timestamp < segment.start */
4381 stream->start_entry = 0;
4382 stream->step_entry = index;
4383 stream->current_entry = index;
4384 stream->stop_entry = next_key;
4386 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
4387 stream->start_entry, stream->step_entry, stream->stop_entry);
4389 stream->start_entry = index;
4390 stream->step_entry = index;
4391 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
4393 if (stream->current_entry != index) {
4394 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
4395 stream->current_entry, index);
4396 stream->current_entry = index;
4397 stream->discont = TRUE;
4400 /* update the buffer info */
4401 gst_avi_demux_get_buffer_info (avi, stream, index,
4402 &stream->current_timestamp, &stream->current_ts_end,
4403 &stream->current_offset, &stream->current_offset_end);
4405 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
4406 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4407 ", off_end %" G_GUINT64_FORMAT, index,
4408 GST_TIME_ARGS (stream->current_timestamp),
4409 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4410 stream->current_offset_end);
4412 GST_DEBUG_OBJECT (avi, "Seeking to offset %" G_GUINT64_FORMAT,
4413 stream->index[index].offset);
4417 * Do the actual seeking.
4420 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
4422 GstClockTime seek_time;
4423 gboolean keyframe, before, after;
4425 GstAviStream *stream;
4427 seek_time = segment->position;
4428 keyframe = ! !(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
4429 before = ! !(segment->flags & GST_SEEK_FLAG_SNAP_BEFORE);
4430 after = ! !(segment->flags & GST_SEEK_FLAG_SNAP_AFTER);
4432 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
4433 " keyframe seeking:%d, %s", GST_TIME_ARGS (seek_time), keyframe,
4434 snap_types[before ? 1 : 0][after ? 1 : 0]);
4436 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4437 * which is mostly correct... */
4438 stream = &avi->stream[avi->main_stream];
4440 /* get the entry index for the requested position */
4441 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
4442 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
4446 /* check if we are already on a keyframe */
4447 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4450 next = after && !before;
4451 if (segment->rate < 0)
4455 GST_DEBUG_OBJECT (avi, "not keyframe, searching forward");
4456 /* now go to the next keyframe, this is where we should start
4458 index = gst_avi_demux_index_next (avi, stream, index, TRUE);
4459 GST_DEBUG_OBJECT (avi, "next keyframe at %u", index);
4461 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
4462 /* now go to the previous keyframe, this is where we should start
4464 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4465 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
4469 /* move the main stream to this position */
4470 gst_avi_demux_move_stream (avi, stream, segment, index);
4473 /* when seeking to a keyframe, we update the result seek time
4474 * to the time of the keyframe. */
4475 seek_time = stream->current_timestamp;
4476 GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
4477 GST_TIME_ARGS (seek_time));
4480 /* the seek time is also the position and stream time when going
4482 segment->position = seek_time;
4483 if (segment->rate > 0.0)
4484 segment->time = seek_time;
4486 /* now set DISCONT and align the other streams */
4487 for (i = 0; i < avi->num_streams; i++) {
4488 GstAviStream *ostream;
4490 ostream = &avi->stream[i];
4491 if ((ostream == stream) || (ostream->index == NULL))
4494 /* get the entry index for the requested position */
4495 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
4499 /* move to previous keyframe */
4500 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
4501 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
4503 gst_avi_demux_move_stream (avi, ostream, segment, index);
4505 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
4506 GST_TIME_ARGS (seek_time));
4512 * Handle seek event in pull mode.
4515 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4520 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4524 GstSegment seeksegment = { 0, };
4529 GST_DEBUG_OBJECT (avi, "doing seek with event");
4531 gst_event_parse_seek (event, &rate, &format, &flags,
4532 &cur_type, &cur, &stop_type, &stop);
4533 seqnum = gst_event_get_seqnum (event);
4535 /* we have to have a format as the segment format. Try to convert
4537 if (format != GST_FORMAT_TIME) {
4538 gboolean res = TRUE;
4540 if (cur_type != GST_SEEK_TYPE_NONE)
4541 res = gst_pad_query_convert (pad, format, cur, GST_FORMAT_TIME, &cur);
4542 if (res && stop_type != GST_SEEK_TYPE_NONE)
4543 res = gst_pad_query_convert (pad, format, stop, GST_FORMAT_TIME, &stop);
4547 format = GST_FORMAT_TIME;
4549 GST_DEBUG_OBJECT (avi,
4550 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
4551 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
4552 /* FIXME: can we do anything with rate!=1.0 */
4554 GST_DEBUG_OBJECT (avi, "doing seek without event");
4559 /* save flush flag */
4560 flush = flags & GST_SEEK_FLAG_FLUSH;
4563 GstEvent *fevent = gst_event_new_flush_start ();
4566 gst_event_set_seqnum (fevent, seqnum);
4567 /* for a flushing seek, we send a flush_start on all pads. This will
4568 * eventually stop streaming with a WRONG_STATE. We can thus eventually
4569 * take the STREAM_LOCK. */
4570 GST_DEBUG_OBJECT (avi, "sending flush start");
4571 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4572 gst_pad_push_event (avi->sinkpad, fevent);
4574 /* a non-flushing seek, we PAUSE the task so that we can take the
4576 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
4577 gst_pad_pause_task (avi->sinkpad);
4580 /* wait for streaming to stop */
4581 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
4582 GST_PAD_STREAM_LOCK (avi->sinkpad);
4584 /* copy segment, we need this because we still need the old
4585 * segment when we close the current segment. */
4586 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4589 GST_DEBUG_OBJECT (avi, "configuring seek");
4590 gst_segment_do_seek (&seeksegment, rate, format, flags,
4591 cur_type, cur, stop_type, stop, &update);
4593 /* do the seek, seeksegment.position contains the new position, this
4594 * actually never fails. */
4595 gst_avi_demux_do_seek (avi, &seeksegment);
4598 GstEvent *fevent = gst_event_new_flush_stop (TRUE);
4601 gst_event_set_seqnum (fevent, seqnum);
4603 GST_DEBUG_OBJECT (avi, "sending flush stop");
4604 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
4605 gst_pad_push_event (avi->sinkpad, fevent);
4608 /* now update the real segment info */
4609 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
4611 /* post the SEGMENT_START message when we do segmented playback */
4612 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4613 GstMessage *segment_start_msg =
4614 gst_message_new_segment_start (GST_OBJECT_CAST (avi),
4615 avi->segment.format, avi->segment.position);
4617 gst_message_set_seqnum (segment_start_msg, seqnum);
4618 gst_element_post_message (GST_ELEMENT_CAST (avi), segment_start_msg);
4621 /* queue the segment event for the streaming thread. */
4623 gst_event_unref (avi->seg_event);
4624 avi->seg_event = gst_event_new_segment (&avi->segment);
4626 gst_event_set_seqnum (avi->seg_event, seqnum);
4628 if (!avi->streaming) {
4629 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4630 avi->sinkpad, NULL);
4632 /* reset the last flow and mark discont, seek is always DISCONT */
4633 for (i = 0; i < avi->num_streams; i++) {
4634 GST_DEBUG_OBJECT (avi, "marking DISCONT");
4635 avi->stream[i].discont = TRUE;
4637 /* likewise for the whole new segment */
4638 gst_flow_combiner_reset (avi->flowcombiner);
4639 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
4646 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4652 * Handle seek event in push mode.
4655 avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, GstEvent * event)
4660 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4662 gboolean keyframe, before, after;
4663 GstAviStream *stream;
4667 GstSegment seeksegment;
4670 /* check we have the index */
4671 if (!avi->have_index) {
4672 GST_DEBUG_OBJECT (avi, "no seek index built, seek aborted.");
4675 GST_DEBUG_OBJECT (avi, "doing push-based seek with event");
4678 gst_event_parse_seek (event, &rate, &format, &flags,
4679 &cur_type, &cur, &stop_type, &stop);
4681 if (format != GST_FORMAT_TIME) {
4682 gboolean res = TRUE;
4684 if (cur_type != GST_SEEK_TYPE_NONE)
4685 res = gst_pad_query_convert (pad, format, cur, GST_FORMAT_TIME, &cur);
4686 if (res && stop_type != GST_SEEK_TYPE_NONE)
4687 res = gst_pad_query_convert (pad, format, stop, GST_FORMAT_TIME, &stop);
4689 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4693 format = GST_FORMAT_TIME;
4696 /* let gst_segment handle any tricky stuff */
4697 GST_DEBUG_OBJECT (avi, "configuring seek");
4698 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4699 gst_segment_do_seek (&seeksegment, rate, format, flags,
4700 cur_type, cur, stop_type, stop, &update);
4702 keyframe = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
4703 cur = seeksegment.position;
4704 before = ! !(flags & GST_SEEK_FLAG_SNAP_BEFORE);
4705 after = ! !(flags & GST_SEEK_FLAG_SNAP_AFTER);
4707 GST_DEBUG_OBJECT (avi,
4708 "Seek requested: ts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
4709 ", kf %u, %s, rate %lf", GST_TIME_ARGS (cur), GST_TIME_ARGS (stop),
4710 keyframe, snap_types[before ? 1 : 0][after ? 1 : 0], rate);
4713 GST_DEBUG_OBJECT (avi, "negative rate seek not supported in push mode");
4717 /* FIXME, this code assumes the main stream with keyframes is stream 0,
4718 * which is mostly correct... */
4719 str_num = avi->main_stream;
4720 stream = &avi->stream[str_num];
4722 /* get the entry index for the requested position */
4723 index = gst_avi_demux_index_for_time (avi, stream, cur);
4724 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT,
4725 str_num, index, GST_TIME_ARGS (cur));
4729 /* check if we are already on a keyframe */
4730 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
4733 next = after && !before;
4734 if (seeksegment.rate < 0)
4738 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching forward");
4739 /* now go to the next keyframe, this is where we should start
4741 index = gst_avi_demux_index_next (avi, stream, index, TRUE);
4742 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index);
4744 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4745 /* now go to the previous keyframe, this is where we should start
4747 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
4748 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index);
4752 gst_avi_demux_get_buffer_info (avi, stream, index,
4753 &stream->current_timestamp, &stream->current_ts_end,
4754 &stream->current_offset, &stream->current_offset_end);
4756 /* re-use cur to be the timestamp of the seek as it _will_ be */
4757 cur = stream->current_timestamp;
4759 min_offset = stream->index[index].offset;
4760 avi->seek_kf_offset = min_offset - 8;
4762 GST_DEBUG_OBJECT (avi,
4763 "Seek to: ts %" GST_TIME_FORMAT " (on str %u, idx %u, offset %"
4764 G_GUINT64_FORMAT ")", GST_TIME_ARGS (stream->current_timestamp), str_num,
4767 for (n = 0; n < avi->num_streams; n++) {
4768 GstAviStream *str = &avi->stream[n];
4771 if (n == avi->main_stream)
4774 /* get the entry index for the requested position */
4775 idx = gst_avi_demux_index_for_time (avi, str, cur);
4776 GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT, n,
4777 idx, GST_TIME_ARGS (cur));
4781 /* check if we are already on a keyframe */
4782 if (!ENTRY_IS_KEYFRAME (&str->index[idx])) {
4783 if (after && !before) {
4784 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching forward");
4785 /* now go to the next keyframe, this is where we should start
4787 idx = gst_avi_demux_index_next (avi, str, idx, TRUE);
4788 GST_DEBUG_OBJECT (avi, "Found next keyframe at %u", idx);
4790 GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back");
4791 /* now go to the previous keyframe, this is where we should start
4793 idx = gst_avi_demux_index_prev (avi, str, idx, TRUE);
4794 GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", idx);
4798 gst_avi_demux_get_buffer_info (avi, str, idx,
4799 &str->current_timestamp, &str->current_ts_end,
4800 &str->current_offset, &str->current_offset_end);
4802 if (str->index[idx].offset < min_offset) {
4803 min_offset = str->index[idx].offset;
4804 GST_DEBUG_OBJECT (avi,
4805 "Found an earlier offset at %" G_GUINT64_FORMAT ", str %u",
4813 GST_DEBUG_OBJECT (avi,
4814 "Seek performed: str %u, offset %" G_GUINT64_FORMAT ", idx %u, ts %"
4815 GST_TIME_FORMAT ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4816 ", off_end %" G_GUINT64_FORMAT, str_num, min_offset, index,
4817 GST_TIME_ARGS (stream->current_timestamp),
4818 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4819 stream->current_offset_end);
4821 /* index data refers to data, not chunk header (for pull mode convenience) */
4823 GST_DEBUG_OBJECT (avi, "seeking to chunk at offset %" G_GUINT64_FORMAT,
4826 if (!perform_seek_to_offset (avi, min_offset)) {
4827 GST_DEBUG_OBJECT (avi, "seek event failed!");
4835 * Handle whether we can perform the seek event or if we have to let the chain
4836 * function handle seeks to build the seek indexes first.
4839 gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
4842 /* check for having parsed index already */
4843 if (!avi->have_index) {
4845 gboolean building_index;
4847 GST_OBJECT_LOCK (avi);
4848 /* handle the seek event in the chain function */
4849 avi->state = GST_AVI_DEMUX_SEEK;
4851 /* copy the event */
4852 if (avi->seek_event)
4853 gst_event_unref (avi->seek_event);
4854 avi->seek_event = gst_event_ref (event);
4856 /* set the building_index flag so that only one thread can setup the
4857 * structures for index seeking. */
4858 building_index = avi->building_index;
4859 if (!building_index) {
4860 avi->building_index = TRUE;
4861 if (avi->stream[0].indexes) {
4862 avi->odml_stream = 0;
4863 avi->odml_subidxs = avi->stream[avi->odml_stream].indexes;
4864 offset = avi->odml_subidxs[0];
4866 offset = avi->idx1_offset;
4869 GST_OBJECT_UNLOCK (avi);
4871 if (!building_index) {
4872 /* seek to the first subindex or legacy index */
4873 GST_INFO_OBJECT (avi,
4874 "Seeking to legacy index/first subindex at %" G_GUINT64_FORMAT,
4876 return perform_seek_to_offset (avi, offset);
4879 /* FIXME: we have to always return true so that we don't block the seek
4881 * Note: maybe it is OK to return true if we're still building the index */
4885 return avi_demux_handle_seek_push (avi, pad, event);
4889 * Helper for gst_avi_demux_invert()
4892 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
4894 memcpy (tmp, d1, bytes);
4895 memcpy (d1, d2, bytes);
4896 memcpy (d2, tmp, bytes);
4900 #define gst_avi_demux_is_uncompressed(fourcc) \
4901 (fourcc == GST_RIFF_DIB || \
4902 fourcc == GST_RIFF_rgb || \
4903 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
4906 * Invert DIB buffers... Takes existing buffer and
4907 * returns either the buffer or a new one (with old
4908 * one dereferenced).
4909 * FIXME: can't we preallocate tmp? and remember stride, bpp?
4912 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
4920 if (stream->strh->type != GST_RIFF_FCC_vids)
4923 if (stream->strf.vids == NULL) {
4924 GST_WARNING ("Failed to retrieve vids for stream");
4928 fourcc = (stream->strf.vids->compression) ?
4929 stream->strf.vids->compression : stream->strh->fcc_handler;
4930 if (!gst_avi_demux_is_uncompressed (fourcc)) {
4931 return buf; /* Ignore non DIB buffers */
4934 /* raw rgb data is stored topdown, but instead of inverting the buffer, */
4935 /* some tools just negate the height field in the header (e.g. ffmpeg) */
4936 if (((gint32) stream->strf.vids->height) < 0)
4939 h = stream->strf.vids->height;
4940 w = stream->strf.vids->width;
4941 bpp = stream->strf.vids->bit_cnt ? stream->strf.vids->bit_cnt : 8;
4942 stride = GST_ROUND_UP_4 (w * (bpp / 8));
4944 buf = gst_buffer_make_writable (buf);
4946 gst_buffer_map (buf, &map, GST_MAP_READWRITE);
4947 if (map.size < (stride * h)) {
4948 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
4949 gst_buffer_unmap (buf, &map);
4953 tmp = g_malloc (stride);
4955 for (y = 0; y < h / 2; y++) {
4956 swap_line (map.data + stride * y, map.data + stride * (h - 1 - y), tmp,
4962 gst_buffer_unmap (buf, &map);
4964 /* append palette to paletted RGB8 buffer data */
4965 if (stream->rgb8_palette != NULL)
4966 buf = gst_buffer_append (buf, gst_buffer_ref (stream->rgb8_palette));
4973 gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
4974 GstClockTime timestamp, guint64 offset, gboolean keyframe)
4976 /* do not add indefinitely for open-ended streaming */
4977 if (G_UNLIKELY (avi->element_index && avi->seekable)) {
4978 GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
4979 G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
4980 gst_index_add_association (avi->element_index, avi->index_id,
4981 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT :
4982 GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp,
4983 GST_FORMAT_BYTES, offset, NULL);
4984 /* current_entry is DEFAULT (frame #) */
4985 gst_index_add_association (avi->element_index, stream->index_id,
4986 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT :
4987 GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp,
4988 GST_FORMAT_BYTES, offset, GST_FORMAT_DEFAULT, stream->current_entry,
4995 * Returns the aggregated GstFlowReturn.
4997 static GstFlowReturn
4998 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
5001 GST_LOG_OBJECT (avi, "Stream %s:%s flow return: %s",
5002 GST_DEBUG_PAD_NAME (stream->pad), gst_flow_get_name (ret));
5003 ret = gst_flow_combiner_update_pad_flow (avi->flowcombiner, stream->pad, ret);
5004 GST_LOG_OBJECT (avi, "combined to return %s", gst_flow_get_name (ret));
5009 /* move @stream to the next position in its index */
5010 static GstFlowReturn
5011 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
5014 guint old_entry, new_entry;
5016 old_entry = stream->current_entry;
5018 new_entry = old_entry + 1;
5020 /* see if we reached the end */
5021 if (new_entry >= stream->stop_entry) {
5022 if (avi->segment.rate < 0.0) {
5023 if (stream->step_entry == stream->start_entry) {
5024 /* we stepped all the way to the start, eos */
5025 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
5028 /* backwards, stop becomes step, find a new step */
5029 stream->stop_entry = stream->step_entry;
5030 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
5031 stream->stop_entry, TRUE);
5033 GST_DEBUG_OBJECT (avi,
5034 "reverse playback jump: start %u, step %u, stop %u",
5035 stream->start_entry, stream->step_entry, stream->stop_entry);
5037 /* and start from the previous keyframe now */
5038 new_entry = stream->step_entry;
5041 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
5046 if (new_entry != old_entry) {
5047 stream->current_entry = new_entry;
5048 stream->current_total = stream->index[new_entry].total;
5050 if (new_entry == old_entry + 1) {
5051 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
5052 old_entry, new_entry);
5053 /* we simply moved one step forwards, reuse current info */
5054 stream->current_timestamp = stream->current_ts_end;
5055 stream->current_offset = stream->current_offset_end;
5056 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
5057 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
5059 /* we moved DISCONT, full update */
5060 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
5061 &stream->current_timestamp, &stream->current_ts_end,
5062 &stream->current_offset, &stream->current_offset_end);
5063 /* and MARK discont for this stream */
5064 stream->discont = TRUE;
5065 GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
5066 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
5067 ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
5068 GST_TIME_ARGS (stream->current_timestamp),
5069 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
5070 stream->current_offset_end);
5078 GST_DEBUG_OBJECT (avi, "we are EOS");
5079 /* setting current_timestamp to -1 marks EOS */
5080 stream->current_timestamp = -1;
5081 return GST_FLOW_EOS;
5085 /* find the stream with the lowest current position when going forwards or with
5086 * the highest position when going backwards, this is the stream
5087 * we should push from next */
5089 gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
5091 guint64 min_time, max_time;
5092 guint stream_num, i;
5095 min_time = G_MAXUINT64;
5098 for (i = 0; i < avi->num_streams; i++) {
5100 GstAviStream *stream;
5102 stream = &avi->stream[i];
5104 /* ignore streams that finished */
5105 if (stream->pad && GST_PAD_LAST_FLOW_RETURN (stream->pad) == GST_FLOW_EOS)
5108 position = stream->current_timestamp;
5110 /* position of -1 is EOS */
5111 if (position != -1) {
5112 if (rate > 0.0 && position < min_time) {
5113 min_time = position;
5115 } else if (rate < 0.0 && position >= max_time) {
5116 max_time = position;
5124 static GstFlowReturn
5125 gst_avi_demux_loop_data (GstAviDemux * avi)
5127 GstFlowReturn ret = GST_FLOW_OK;
5129 GstAviStream *stream;
5130 gboolean processed = FALSE;
5132 guint64 offset, size;
5133 GstClockTime timestamp, duration;
5134 guint64 out_offset, out_offset_end;
5136 GstAviIndexEntry *entry;
5139 stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
5142 if (G_UNLIKELY (stream_num == -1)) {
5143 GST_DEBUG_OBJECT (avi, "all streams are EOS");
5147 /* we have the stream now */
5148 stream = &avi->stream[stream_num];
5150 /* skip streams without pads */
5152 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
5157 /* get the timing info for the entry */
5158 timestamp = stream->current_timestamp;
5159 duration = stream->current_ts_end - timestamp;
5160 out_offset = stream->current_offset;
5161 out_offset_end = stream->current_offset_end;
5163 /* get the entry data info */
5164 entry = &stream->index[stream->current_entry];
5165 offset = entry->offset;
5167 keyframe = ENTRY_IS_KEYFRAME (entry);
5169 /* skip empty entries */
5171 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
5172 stream->current_entry, size, stream->pad);
5176 if (avi->segment.rate > 0.0) {
5177 /* only check this for fowards playback for now */
5178 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
5179 && (timestamp > avi->segment.stop)) {
5184 GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
5185 G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
5186 stream_num, offset, offset, keyframe);
5188 /* FIXME, check large chunks and cut them up */
5190 /* pull in the data */
5192 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
5193 if (ret != GST_FLOW_OK)
5196 /* check for short buffers, this is EOS as well */
5197 if (gst_buffer_get_size (buf) < size)
5200 /* invert the picture if needed, and append palette for RGB8P */
5201 buf = gst_avi_demux_invert (stream, buf);
5203 /* mark non-keyframes */
5204 if (keyframe || stream->is_raw) {
5205 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
5206 GST_BUFFER_PTS (buf) = timestamp;
5208 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
5209 GST_BUFFER_PTS (buf) = GST_CLOCK_TIME_NONE;
5212 GST_BUFFER_DTS (buf) = timestamp;
5214 GST_BUFFER_DURATION (buf) = duration;
5215 GST_BUFFER_OFFSET (buf) = out_offset;
5216 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
5218 /* mark discont when pending */
5219 if (stream->discont) {
5220 GST_DEBUG_OBJECT (avi, "setting DISCONT flag");
5221 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
5222 stream->discont = FALSE;
5224 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
5227 gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
5230 /* update current position in the segment */
5231 avi->segment.position = timestamp;
5233 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %" G_GSIZE_FORMAT ", ts %"
5234 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
5235 ", off_end %" G_GUINT64_FORMAT,
5236 gst_buffer_get_size (buf), GST_TIME_ARGS (timestamp),
5237 GST_TIME_ARGS (duration), out_offset, out_offset_end);
5239 ret = gst_pad_push (stream->pad, buf);
5241 /* mark as processed, we increment the frame and byte counters then
5242 * leave the while loop and return the GstFlowReturn */
5245 if (avi->segment.rate < 0) {
5246 if (timestamp > avi->segment.stop && ret == GST_FLOW_EOS) {
5247 /* In reverse playback we can get a GST_FLOW_EOS when
5248 * we are at the end of the segment, so we just need to jump
5249 * back to the previous section. */
5250 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
5255 /* move to next item */
5256 ret = gst_avi_demux_advance (avi, stream, ret);
5259 ret = gst_avi_demux_combine_flows (avi, stream, ret);
5260 } while (!processed);
5268 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
5274 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
5275 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
5276 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
5278 /* move to next stream */
5283 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
5284 " size=%" G_GUINT64_FORMAT, offset, size);
5289 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
5290 ", only got %" G_GSIZE_FORMAT "/%" G_GUINT64_FORMAT
5291 " bytes (truncated file?)", offset, gst_buffer_get_size (buf), size);
5292 gst_buffer_unref (buf);
5299 * Read data. If we have an index it delegates to
5300 * gst_avi_demux_process_next_entry().
5302 static GstFlowReturn
5303 gst_avi_demux_stream_data (GstAviDemux * avi)
5308 GstFlowReturn res = GST_FLOW_OK;
5310 if (G_UNLIKELY (avi->have_eos)) {
5311 /* Clean adapter, we're done */
5312 gst_adapter_clear (avi->adapter);
5313 return GST_FLOW_EOS;
5316 if (G_UNLIKELY (avi->todrop)) {
5319 if ((drop = gst_adapter_available (avi->adapter))) {
5320 if (drop > avi->todrop)
5322 GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
5323 gst_adapter_flush (avi->adapter, drop);
5324 avi->todrop -= drop;
5325 avi->offset += drop;
5329 /* Iterate until need more data, so adapter won't grow too much */
5331 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
5335 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
5336 GST_FOURCC_ARGS (tag), size);
5338 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
5339 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
5340 GST_LOG ("Chunk ok");
5341 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
5342 GST_DEBUG ("Found sub-index tag");
5343 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
5344 /* accept 0 size buffer here */
5345 avi->abort_buffering = FALSE;
5346 GST_DEBUG (" skipping %d bytes for now", size);
5347 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
5350 } else if (tag == GST_RIFF_TAG_RIFF) {
5351 /* RIFF tags can appear in ODML files, just jump over them */
5352 if (gst_adapter_available (avi->adapter) >= 12) {
5353 GST_DEBUG ("Found RIFF tag, skipping RIFF header");
5354 gst_adapter_flush (avi->adapter, 12);
5358 } else if (tag == GST_RIFF_TAG_idx1) {
5359 GST_DEBUG ("Found index tag");
5360 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
5361 /* accept 0 size buffer here */
5362 avi->abort_buffering = FALSE;
5363 GST_DEBUG (" skipping %d bytes for now", size);
5364 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
5367 } else if (tag == GST_RIFF_TAG_LIST) {
5368 /* movi chunks might be grouped in rec list */
5369 if (gst_adapter_available (avi->adapter) >= 12) {
5370 GST_DEBUG ("Found LIST tag, skipping LIST header");
5371 gst_adapter_flush (avi->adapter, 12);
5375 } else if (tag == GST_RIFF_TAG_JUNK || tag == GST_RIFF_TAG_JUNQ) {
5376 /* rec list might contain JUNK chunks */
5377 GST_DEBUG ("Found JUNK tag");
5378 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
5379 /* accept 0 size buffer here */
5380 avi->abort_buffering = FALSE;
5381 GST_DEBUG (" skipping %d bytes for now", size);
5382 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
5386 GST_DEBUG ("No more stream chunks, send EOS");
5387 avi->have_eos = TRUE;
5388 return GST_FLOW_EOS;
5391 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
5392 /* supposedly one hopes to catch a nicer chunk later on ... */
5393 /* FIXME ?? give up here rather than possibly ending up going
5394 * through the whole file */
5395 if (avi->abort_buffering) {
5396 avi->abort_buffering = FALSE;
5398 gst_adapter_flush (avi->adapter, 8);
5405 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
5406 GST_FOURCC_ARGS (tag), size);
5408 stream_nr = CHUNKID_TO_STREAMNR (tag);
5410 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
5412 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
5413 stream_nr, GST_FOURCC_ARGS (tag));
5414 avi->offset += 8 + GST_ROUND_UP_2 (size);
5415 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
5417 GstAviStream *stream;
5418 GstClockTime next_ts = 0;
5419 GstBuffer *buf = NULL;
5423 gboolean saw_desired_kf = stream_nr != avi->main_stream
5424 || avi->offset >= avi->seek_kf_offset;
5426 if (stream_nr == avi->main_stream && avi->offset == avi->seek_kf_offset) {
5427 GST_DEBUG_OBJECT (avi, "Desired keyframe reached");
5428 avi->seek_kf_offset = 0;
5431 if (saw_desired_kf) {
5432 gst_adapter_flush (avi->adapter, 8);
5435 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
5436 /* patch the size */
5437 gst_buffer_resize (buf, 0, size);
5442 GST_DEBUG_OBJECT (avi,
5443 "Desired keyframe not yet reached, flushing chunk");
5444 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
5448 offset = avi->offset;
5450 avi->offset += 8 + GST_ROUND_UP_2 (size);
5452 stream = &avi->stream[stream_nr];
5454 /* set delay (if any)
5455 if (stream->strh->init_frames == stream->current_frame &&
5457 stream->delay = next_ts;
5460 /* parsing of corresponding header may have failed */
5461 if (G_UNLIKELY (!stream->pad)) {
5462 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
5463 GST_FOURCC_ARGS (tag));
5465 gst_buffer_unref (buf);
5467 /* get time of this buffer */
5468 gst_pad_query_position (stream->pad, GST_FORMAT_TIME,
5469 (gint64 *) & next_ts);
5472 gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
5475 /* increment our positions */
5476 stream->current_entry++;
5477 /* as in pull mode, 'total' is either bytes (CBR) or frames (VBR) */
5478 if (stream->strh->type == GST_RIFF_FCC_auds && stream->is_vbr) {
5479 gint blockalign = stream->strf.auds->blockalign;
5481 stream->current_total += DIV_ROUND_UP (size, blockalign);
5483 stream->current_total++;
5485 stream->current_total += size;
5487 GST_LOG_OBJECT (avi, "current entry %u, total %u",
5488 stream->current_entry, stream->current_total);
5490 /* update current position in the segment */
5491 avi->segment.position = next_ts;
5493 if (saw_desired_kf && buf) {
5494 GstClockTime dur_ts = 0;
5496 /* invert the picture if needed, and append palette for RGB8P */
5497 buf = gst_avi_demux_invert (stream, buf);
5499 gst_pad_query_position (stream->pad, GST_FORMAT_TIME,
5500 (gint64 *) & dur_ts);
5502 GST_BUFFER_DTS (buf) = next_ts;
5503 GST_BUFFER_PTS (buf) = GST_CLOCK_TIME_NONE;
5504 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
5505 if (stream->strh->type == GST_RIFF_FCC_vids) {
5506 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
5507 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
5509 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
5510 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
5513 GST_DEBUG_OBJECT (avi,
5514 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
5515 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
5516 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
5517 GST_TIME_ARGS (GST_BUFFER_DURATION (buf)),
5518 GST_BUFFER_OFFSET (buf), size, GST_PAD_NAME (stream->pad));
5520 /* mark discont when pending */
5521 if (G_UNLIKELY (stream->discont)) {
5522 GST_DEBUG_OBJECT (avi, "Setting DISCONT");
5523 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
5524 stream->discont = FALSE;
5526 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
5528 res = gst_pad_push (stream->pad, buf);
5532 res = gst_avi_demux_combine_flows (avi, stream, res);
5533 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5534 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
5546 * Send pending tags.
5549 push_tag_lists (GstAviDemux * avi)
5557 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
5559 for (i = 0; i < avi->num_streams; i++) {
5560 GstAviStream *stream = &avi->stream[i];
5561 GstPad *pad = stream->pad;
5563 tags = stream->taglist;
5566 GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
5568 gst_pad_push_event (pad, gst_event_new_tag (tags));
5569 stream->taglist = NULL;
5573 if (!(tags = avi->globaltags))
5574 tags = gst_tag_list_new_empty ();
5576 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
5577 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
5579 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
5580 gst_tag_list_set_scope (tags, GST_TAG_SCOPE_GLOBAL);
5581 gst_avi_demux_push_event (avi, gst_event_new_tag (tags));
5582 avi->globaltags = NULL;
5583 avi->got_tags = FALSE;
5587 gst_avi_demux_loop (GstPad * pad)
5590 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5592 switch (avi->state) {
5593 case GST_AVI_DEMUX_START:
5594 res = gst_avi_demux_stream_init_pull (avi);
5595 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5596 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5599 avi->state = GST_AVI_DEMUX_HEADER;
5601 case GST_AVI_DEMUX_HEADER:
5602 res = gst_avi_demux_stream_header_pull (avi);
5603 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5604 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5607 avi->state = GST_AVI_DEMUX_MOVI;
5609 case GST_AVI_DEMUX_MOVI:
5610 if (G_UNLIKELY (avi->seg_event)) {
5611 gst_avi_demux_push_event (avi, avi->seg_event);
5612 avi->seg_event = NULL;
5614 if (G_UNLIKELY (avi->got_tags)) {
5615 push_tag_lists (avi);
5617 /* process each index entry in turn */
5618 res = gst_avi_demux_loop_data (avi);
5620 /* pause when error */
5621 if (G_UNLIKELY (res != GST_FLOW_OK)) {
5622 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
5627 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
5628 res = GST_FLOW_ERROR;
5637 gboolean push_eos = FALSE;
5638 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
5639 gst_pad_pause_task (avi->sinkpad);
5641 if (res == GST_FLOW_EOS) {
5642 /* handle end-of-stream/segment */
5643 /* so align our position with the end of it, if there is one
5644 * this ensures a subsequent will arrive at correct base/acc time */
5645 if (avi->segment.rate > 0.0 &&
5646 GST_CLOCK_TIME_IS_VALID (avi->segment.stop))
5647 avi->segment.position = avi->segment.stop;
5648 else if (avi->segment.rate < 0.0)
5649 avi->segment.position = avi->segment.start;
5650 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
5653 if ((stop = avi->segment.stop) == -1)
5654 stop = avi->segment.duration;
5656 GST_INFO_OBJECT (avi, "sending segment_done");
5658 gst_element_post_message
5659 (GST_ELEMENT_CAST (avi),
5660 gst_message_new_segment_done (GST_OBJECT_CAST (avi),
5661 GST_FORMAT_TIME, stop));
5662 gst_avi_demux_push_event (avi,
5663 gst_event_new_segment_done (GST_FORMAT_TIME, stop));
5667 } else if (res == GST_FLOW_NOT_LINKED || res < GST_FLOW_EOS) {
5668 /* for fatal errors we post an error message, wrong-state is
5669 * not fatal because it happens due to flushes and only means
5670 * that we should stop now. */
5671 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
5672 (_("Internal data stream error.")),
5673 ("streaming stopped, reason %s", gst_flow_get_name (res)));
5677 GST_INFO_OBJECT (avi, "sending eos");
5678 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
5679 (res == GST_FLOW_EOS)) {
5680 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
5681 (NULL), ("got eos but no streams (yet)"));
5688 static GstFlowReturn
5689 gst_avi_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
5692 GstAviDemux *avi = GST_AVI_DEMUX (parent);
5695 if (GST_BUFFER_IS_DISCONT (buf)) {
5696 GST_DEBUG_OBJECT (avi, "got DISCONT");
5697 gst_adapter_clear (avi->adapter);
5698 /* mark all streams DISCONT */
5699 for (i = 0; i < avi->num_streams; i++)
5700 avi->stream[i].discont = TRUE;
5703 GST_DEBUG ("Store %" G_GSIZE_FORMAT " bytes in adapter",
5704 gst_buffer_get_size (buf));
5705 gst_adapter_push (avi->adapter, buf);
5707 switch (avi->state) {
5708 case GST_AVI_DEMUX_START:
5709 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
5710 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5714 case GST_AVI_DEMUX_HEADER:
5715 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
5716 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5720 case GST_AVI_DEMUX_MOVI:
5721 if (G_UNLIKELY (avi->seg_event)) {
5722 gst_avi_demux_push_event (avi, avi->seg_event);
5723 avi->seg_event = NULL;
5725 if (G_UNLIKELY (avi->got_tags)) {
5726 push_tag_lists (avi);
5728 res = gst_avi_demux_stream_data (avi);
5730 case GST_AVI_DEMUX_SEEK:
5736 /* obtain and parse indexes */
5737 if (avi->stream[0].indexes && !gst_avi_demux_read_subindexes_push (avi))
5738 /* seek in subindex read function failed */
5741 if (!avi->stream[0].indexes && !avi->have_index
5742 && avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
5743 gst_avi_demux_stream_index_push (avi);
5745 if (avi->have_index) {
5746 /* use the indexes now to construct nice durations */
5747 gst_avi_demux_calculate_durations_from_index (avi);
5749 /* still parsing indexes */
5753 GST_OBJECT_LOCK (avi);
5754 event = avi->seek_event;
5755 avi->seek_event = NULL;
5756 GST_OBJECT_UNLOCK (avi);
5758 /* calculate and perform seek */
5759 if (!avi_demux_handle_seek_push (avi, avi->sinkpad, event))
5762 gst_event_unref (event);
5763 avi->state = GST_AVI_DEMUX_MOVI;
5767 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
5768 ("Illegal internal state"));
5769 res = GST_FLOW_ERROR;
5773 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
5774 gst_flow_get_name (res));
5776 if (G_UNLIKELY (avi->abort_buffering))
5777 goto abort_buffering;
5784 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("failed to read indexes"));
5785 return GST_FLOW_ERROR;
5789 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("push mode seek failed"));
5790 return GST_FLOW_ERROR;
5794 avi->abort_buffering = FALSE;
5795 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
5796 return GST_FLOW_ERROR;
5801 gst_avi_demux_sink_activate (GstPad * sinkpad, GstObject * parent)
5806 query = gst_query_new_scheduling ();
5808 if (!gst_pad_peer_query (sinkpad, query)) {
5809 gst_query_unref (query);
5813 pull_mode = gst_query_has_scheduling_mode_with_flags (query,
5814 GST_PAD_MODE_PULL, GST_SCHEDULING_FLAG_SEEKABLE);
5815 gst_query_unref (query);
5820 GST_DEBUG_OBJECT (sinkpad, "activating pull");
5821 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
5825 GST_DEBUG_OBJECT (sinkpad, "activating push");
5826 return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
5831 gst_avi_demux_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
5832 GstPadMode mode, gboolean active)
5835 GstAviDemux *avi = GST_AVI_DEMUX (parent);
5838 case GST_PAD_MODE_PULL:
5840 avi->streaming = FALSE;
5841 res = gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
5844 res = gst_pad_stop_task (sinkpad);
5847 case GST_PAD_MODE_PUSH:
5849 GST_DEBUG ("avi: activating push/chain function");
5850 avi->streaming = TRUE;
5852 GST_DEBUG ("avi: deactivating push/chain function");
5865 gst_avi_demux_set_index (GstElement * element, GstIndex * index)
5867 GstAviDemux *avi = GST_AVI_DEMUX (element);
5869 GST_OBJECT_LOCK (avi);
5870 if (avi->element_index)
5871 gst_object_unref (avi->element_index);
5873 avi->element_index = gst_object_ref (index);
5875 avi->element_index = NULL;
5877 GST_OBJECT_UNLOCK (avi);
5878 /* object lock might be taken again */
5880 gst_index_get_writer_id (index, GST_OBJECT_CAST (element), &avi->index_id);
5881 GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
5885 gst_avi_demux_get_index (GstElement * element)
5887 GstIndex *result = NULL;
5888 GstAviDemux *avi = GST_AVI_DEMUX (element);
5890 GST_OBJECT_LOCK (avi);
5891 if (avi->element_index)
5892 result = gst_object_ref (avi->element_index);
5893 GST_OBJECT_UNLOCK (avi);
5895 GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
5901 static GstStateChangeReturn
5902 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
5904 GstStateChangeReturn ret;
5905 GstAviDemux *avi = GST_AVI_DEMUX (element);
5907 switch (transition) {
5908 case GST_STATE_CHANGE_READY_TO_PAUSED:
5909 avi->streaming = FALSE;
5910 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
5916 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
5917 if (ret == GST_STATE_CHANGE_FAILURE)
5920 switch (transition) {
5921 case GST_STATE_CHANGE_PAUSED_TO_READY:
5922 avi->have_index = FALSE;
5923 gst_avi_demux_reset (avi);