2 * Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
3 * Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>)
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
20 /* Element-Checklist-Version: 5 */
23 * SECTION:element-avidemux
25 * Demuxes an .avi file into raw or compressed audio and/or video streams.
27 * This element supports both push and pull-based scheduling, depending on the
28 * capabilities of the upstream elements.
31 * <title>Example launch line</title>
33 * gst-launch filesrc location=test.avi ! avidemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink
34 * ]| Play (parse and decode) an .avi file and try to output it to
35 * an automatically detected soundcard and videosink. If the AVI file contains
36 * compressed audio or video data, this will only work if you have the
37 * right decoder elements/plugins installed.
40 * Last reviewed on 2006-12-29 (0.10.6)
49 #include "gst/riff/riff-media.h"
50 #include "gstavidemux.h"
52 #include <gst/gst-i18n-plugin.h>
53 #include <gst/base/gstadapter.h>
56 #define DIV_ROUND_UP(s,v) (((s) + ((v)-1)) / (v))
58 GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
59 #define GST_CAT_DEFAULT avidemux_debug
61 static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
64 GST_STATIC_CAPS ("video/x-msvideo")
67 static void gst_avi_demux_base_init (GstAviDemuxClass * klass);
68 static void gst_avi_demux_class_init (GstAviDemuxClass * klass);
69 static void gst_avi_demux_init (GstAviDemux * avi);
70 static void gst_avi_demux_finalize (GObject * object);
72 static void gst_avi_demux_reset (GstAviDemux * avi);
75 static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
77 static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event);
78 static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
80 static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
83 static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
85 static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad);
86 static gboolean gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query);
87 static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
88 gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
90 static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
91 static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
93 static gboolean gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
95 static void gst_avi_demux_loop (GstPad * pad);
96 static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad);
97 static gboolean gst_avi_demux_sink_activate_pull (GstPad * sinkpad,
99 static gboolean gst_avi_demux_activate_push (GstPad * pad, gboolean active);
100 static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstBuffer * buf);
102 static void gst_avi_demux_set_index (GstElement * element, GstIndex * index);
103 static GstIndex *gst_avi_demux_get_index (GstElement * element);
104 static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
105 GstStateChange transition);
107 static GstElementClass *parent_class = NULL;
109 /* GObject methods */
112 gst_avi_demux_get_type (void)
114 static GType avi_demux_type = 0;
116 if (!avi_demux_type) {
117 static const GTypeInfo avi_demux_info = {
118 sizeof (GstAviDemuxClass),
119 (GBaseInitFunc) gst_avi_demux_base_init,
121 (GClassInitFunc) gst_avi_demux_class_init,
124 sizeof (GstAviDemux),
126 (GInstanceInitFunc) gst_avi_demux_init,
130 g_type_register_static (GST_TYPE_ELEMENT,
131 "GstAviDemux", &avi_demux_info, 0);
134 return avi_demux_type;
138 gst_avi_demux_base_init (GstAviDemuxClass * klass)
140 static const GstElementDetails gst_avi_demux_details =
141 GST_ELEMENT_DETAILS ("Avi demuxer",
143 "Demultiplex an avi file into audio and video",
144 "Erik Walthinsen <omega@cse.ogi.edu>\n"
145 "Wim Taymans <wim.taymans@chello.be>\n"
146 "Thijs Vermeir <thijsvermeir@gmail.com>");
147 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
148 GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl;
149 GstCaps *audcaps, *vidcaps, *subcaps;
151 audcaps = gst_riff_create_audio_template_caps ();
152 gst_caps_append (audcaps, gst_caps_new_simple ("audio/x-avi-unknown", NULL));
153 audiosrctempl = gst_pad_template_new ("audio_%02d",
154 GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
156 vidcaps = gst_riff_create_video_template_caps ();
157 gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
158 gst_caps_append (vidcaps, gst_caps_new_simple ("video/x-avi-unknown", NULL));
159 videosrctempl = gst_pad_template_new ("video_%02d",
160 GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
162 subcaps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
163 subsrctempl = gst_pad_template_new ("subtitle_%02d",
164 GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
165 gst_element_class_add_pad_template (element_class, audiosrctempl);
166 gst_element_class_add_pad_template (element_class, videosrctempl);
167 gst_element_class_add_pad_template (element_class, subsrctempl);
168 gst_element_class_add_pad_template (element_class,
169 gst_static_pad_template_get (&sink_templ));
170 gst_element_class_set_details (element_class, &gst_avi_demux_details);
174 gst_avi_demux_class_init (GstAviDemuxClass * klass)
176 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
177 GObjectClass *gobject_class = (GObjectClass *) klass;
179 GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
180 0, "Demuxer for AVI streams");
182 parent_class = g_type_class_peek_parent (klass);
184 gobject_class->finalize = gst_avi_demux_finalize;
185 gstelement_class->change_state =
186 GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
188 gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_avi_demux_set_index);
189 gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_avi_demux_get_index);
193 gst_avi_demux_init (GstAviDemux * avi)
195 avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
196 gst_pad_set_activate_function (avi->sinkpad,
197 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
198 gst_pad_set_activatepull_function (avi->sinkpad,
199 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_pull));
200 gst_pad_set_activatepush_function (avi->sinkpad,
201 GST_DEBUG_FUNCPTR (gst_avi_demux_activate_push));
202 gst_pad_set_chain_function (avi->sinkpad,
203 GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
204 gst_pad_set_event_function (avi->sinkpad,
205 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
206 gst_element_add_pad (GST_ELEMENT (avi), avi->sinkpad);
208 avi->adapter = gst_adapter_new ();
210 gst_avi_demux_reset (avi);
214 gst_avi_demux_finalize (GObject * object)
216 GstAviDemux *avi = GST_AVI_DEMUX (object);
218 GST_DEBUG ("AVI: finalize");
220 g_object_unref (avi->adapter);
222 G_OBJECT_CLASS (parent_class)->finalize (object);
226 gst_avi_demux_reset_stream (GstAviDemux * avi, GstAviStream * stream)
228 g_free (stream->strh);
229 g_free (stream->strf.data);
230 g_free (stream->name);
231 g_free (stream->index);
232 g_free (stream->indexes);
233 if (stream->initdata)
234 gst_buffer_unref (stream->initdata);
235 if (stream->extradata)
236 gst_buffer_unref (stream->extradata);
238 if (stream->exposed) {
239 gst_pad_set_active (stream->pad, FALSE);
240 gst_element_remove_pad (GST_ELEMENT (avi), stream->pad);
242 gst_object_unref (stream->pad);
244 if (stream->taglist) {
245 gst_tag_list_free (stream->taglist);
246 stream->taglist = NULL;
248 memset (stream, 0, sizeof (GstAviStream));
252 gst_avi_demux_reset (GstAviDemux * avi)
256 GST_DEBUG ("AVI: reset");
258 for (i = 0; i < avi->num_streams; i++)
259 gst_avi_demux_reset_stream (avi, &avi->stream[i]);
261 avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
262 avi->num_streams = 0;
263 avi->num_v_streams = 0;
264 avi->num_a_streams = 0;
265 avi->num_t_streams = 0;
266 avi->main_stream = -1;
268 avi->state = GST_AVI_DEMUX_START;
271 avi->index_offset = 0;
275 if (avi->element_index)
276 gst_object_unref (avi->element_index);
277 avi->element_index = NULL;
279 if (avi->seek_event) {
280 gst_event_unref (avi->seek_event);
281 avi->seek_event = NULL;
285 gst_tag_list_free (avi->globaltags);
286 avi->globaltags = NULL;
288 avi->got_tags = TRUE; /* we always want to push global tags */
289 avi->have_eos = FALSE;
290 avi->seekable = TRUE;
292 gst_adapter_clear (avi->adapter);
294 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
298 /* GstElement methods */
301 static const GstFormat *
302 gst_avi_demux_get_src_formats (GstPad * pad)
304 GstAviStream *stream = gst_pad_get_element_private (pad);
306 static const GstFormat src_a_formats[] = {
312 static const GstFormat src_v_formats[] = {
318 return (stream->strh->type == GST_RIFF_FCC_auds ?
319 src_a_formats : src_v_formats);
323 /* assumes stream->strf.auds->av_bps != 0 */
324 static inline GstClockTime
325 avi_stream_convert_bytes_to_time_unchecked (GstAviStream * stream,
328 return gst_util_uint64_scale_int (bytes, GST_SECOND,
329 stream->strf.auds->av_bps);
332 static inline guint64
333 avi_stream_convert_time_to_bytes_unchecked (GstAviStream * stream,
336 return gst_util_uint64_scale_int (time, stream->strf.auds->av_bps,
340 /* assumes stream->strh->rate != 0 */
341 static inline GstClockTime
342 avi_stream_convert_frames_to_time_unchecked (GstAviStream * stream,
345 return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
349 static inline guint64
350 avi_stream_convert_time_to_frames_unchecked (GstAviStream * stream,
353 return gst_util_uint64_scale (time, stream->strh->rate,
354 stream->strh->scale * GST_SECOND);
358 gst_avi_demux_src_convert (GstPad * pad,
359 GstFormat src_format,
360 gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
362 GstAviStream *stream = gst_pad_get_element_private (pad);
366 "Received src_format:%s, src_value:%" G_GUINT64_FORMAT
367 ", dest_format:%s", gst_format_get_name (src_format), src_value,
368 gst_format_get_name (*dest_format));
370 if (G_UNLIKELY (src_format == *dest_format)) {
371 *dest_value = src_value;
374 if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
378 if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
379 (src_format == GST_FORMAT_BYTES
380 || *dest_format == GST_FORMAT_BYTES))) {
385 switch (src_format) {
386 case GST_FORMAT_TIME:
387 switch (*dest_format) {
388 case GST_FORMAT_BYTES:
389 *dest_value = gst_util_uint64_scale_int (src_value,
390 stream->strf.auds->av_bps, GST_SECOND);
392 case GST_FORMAT_DEFAULT:
394 gst_util_uint64_scale_round (src_value, stream->strh->rate,
395 stream->strh->scale * GST_SECOND);
402 case GST_FORMAT_BYTES:
403 switch (*dest_format) {
404 case GST_FORMAT_TIME:
405 if (stream->strf.auds->av_bps != 0) {
406 *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
416 case GST_FORMAT_DEFAULT:
417 switch (*dest_format) {
418 case GST_FORMAT_TIME:
420 avi_stream_convert_frames_to_time_unchecked (stream, src_value);
433 "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
434 gst_format_get_name (*dest_format), *dest_value);
438 static const GstQueryType *
439 gst_avi_demux_get_src_query_types (GstPad * pad)
441 static const GstQueryType src_types[] = {
453 gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query)
456 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
458 GstAviStream *stream = gst_pad_get_element_private (pad);
460 if (!stream->strh || !stream->strf.data)
461 return gst_pad_query_default (pad, query);
463 switch (GST_QUERY_TYPE (query)) {
464 case GST_QUERY_POSITION:{
467 GST_DEBUG ("pos query for stream %u: frames %u, bytes %u",
468 stream->num, stream->current_entry, stream->current_total);
470 /* FIXME, this looks clumsy */
471 if (stream->strh->type == GST_RIFF_FCC_auds) {
472 if (stream->is_vbr) {
474 pos = gst_util_uint64_scale ((gint64) stream->current_entry *
475 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
476 GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
477 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
478 } else if (stream->strf.auds->av_bps != 0) {
480 pos = gst_util_uint64_scale (stream->current_total, GST_SECOND,
481 (guint64) stream->strf.auds->av_bps);
482 GST_DEBUG_OBJECT (avi,
483 "CBR convert bytes %u, time %" GST_TIME_FORMAT,
484 stream->current_total, GST_TIME_ARGS (pos));
485 } else if (stream->idx_n != 0 && stream->total_bytes != 0) {
486 /* calculate timestamps based on percentage of length */
487 guint64 xlen = avi->avih->us_frame *
488 avi->avih->tot_frames * GST_USECOND;
490 if (stream->is_vbr) {
491 pos = gst_util_uint64_scale (xlen, stream->current_entry,
493 GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
494 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
496 pos = gst_util_uint64_scale (xlen, stream->current_total,
497 stream->total_bytes);
498 GST_DEBUG_OBJECT (avi,
499 "CBR perc convert bytes %u, time %" GST_TIME_FORMAT,
500 stream->current_total, GST_TIME_ARGS (pos));
507 if (stream->strh->rate != 0) {
508 pos = gst_util_uint64_scale ((guint64) stream->current_entry *
509 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
511 pos = stream->current_entry * avi->avih->us_frame * GST_USECOND;
515 GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
516 gst_query_set_position (query, GST_FORMAT_TIME, pos);
518 GST_WARNING ("pos query failed");
521 case GST_QUERY_DURATION:
525 if (stream->strh->type != GST_RIFF_FCC_auds &&
526 stream->strh->type != GST_RIFF_FCC_vids) {
531 gst_query_parse_duration (query, &fmt, NULL);
534 case GST_FORMAT_TIME:
535 gst_query_set_duration (query, fmt, stream->duration);
537 case GST_FORMAT_DEFAULT:
540 GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
543 if (stream->idx_n >= 0)
544 gst_query_set_duration (query, fmt, stream->idx_n);
545 else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
546 stream->duration, &fmt, &dur))
547 gst_query_set_duration (query, fmt, dur);
556 case GST_QUERY_SEEKING:{
559 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
560 if (fmt == GST_FORMAT_TIME) {
561 gboolean seekable = TRUE;
563 if (avi->streaming) {
564 seekable = avi->seekable;
567 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
568 0, stream->duration);
573 case GST_QUERY_CONVERT:{
574 GstFormat src_fmt, dest_fmt;
575 gint64 src_val, dest_val;
577 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
578 if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
580 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
582 res = gst_pad_query_default (pad, query);
586 res = gst_pad_query_default (pad, query);
590 gst_object_unref (avi);
595 static const GstEventMask *
596 gst_avi_demux_get_event_mask (GstPad * pad)
598 static const GstEventMask masks[] = {
599 {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
608 gst_avi_demux_seek_streams (GstAviDemux * avi, guint64 offset, gboolean before)
610 GstAviStream *stream;
611 GstIndexEntry *entry;
613 gint64 val, min = offset;
615 for (i = 0; i < avi->num_streams; i++) {
616 stream = &avi->stream[i];
618 entry = gst_index_get_assoc_entry (avi->element_index, stream->index_id,
619 before ? GST_INDEX_LOOKUP_BEFORE : GST_INDEX_LOOKUP_AFTER,
620 GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_BYTES, offset);
624 GST_DEBUG_OBJECT (avi, "stream %d, previous entry at %"
625 G_GUINT64_FORMAT, i, val);
626 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
634 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
635 stream->current_entry = 0;
636 stream->current_total = 0;
640 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
641 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT,
644 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &val);
645 stream->current_total = val;
646 gst_index_entry_assoc_map (entry, GST_FORMAT_DEFAULT, &val);
647 stream->current_entry = val;
653 #define GST_AVI_SEEK_PUSH_DISPLACE (4 * GST_SECOND)
656 gst_avi_demux_handle_sink_event (GstPad * pad, GstEvent * event)
659 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
661 GST_DEBUG_OBJECT (avi,
662 "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
664 switch (GST_EVENT_TYPE (event)) {
665 case GST_EVENT_NEWSEGMENT:
669 gint64 start, stop, time, offset = 0;
672 GstIndexEntry *entry;
674 /* some debug output */
675 gst_segment_init (&segment, GST_FORMAT_UNDEFINED);
676 gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
677 &start, &stop, &time);
678 gst_segment_set_newsegment_full (&segment, update, rate, arate, format,
680 GST_DEBUG_OBJECT (avi,
681 "received format %d newsegment %" GST_SEGMENT_FORMAT, format,
684 /* chain will send initial newsegment after pads have been added */
685 if (avi->state != GST_AVI_DEMUX_MOVI) {
686 GST_DEBUG_OBJECT (avi, "still starting, eating event");
690 /* we only expect a BYTE segment, e.g. following a seek */
691 if (format != GST_FORMAT_BYTES) {
692 GST_DEBUG_OBJECT (avi, "unsupported segment format, ignoring");
696 if (!avi->element_index) {
697 GST_WARNING_OBJECT (avi, "no index data, forcing EOS");
701 /* Let's check if we have an index entry for this position */
702 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
703 GST_INDEX_LOOKUP_AFTER, GST_ASSOCIATION_FLAG_NONE,
704 GST_FORMAT_BYTES, start);
706 /* we can not go where we have not yet been before ... */
708 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
713 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time);
714 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &start);
715 stop = GST_CLOCK_TIME_NONE;
717 /* compensate for slack */
719 time += GST_AVI_SEEK_PUSH_DISPLACE;
721 /* set up segment and send downstream */
722 gst_segment_set_newsegment_full (&avi->segment, update, rate, arate,
723 GST_FORMAT_TIME, time, stop, time);
724 GST_DEBUG_OBJECT (avi, "Pushing newseg update %d, rate %g, "
725 "applied rate %g, format %d, start %" G_GINT64_FORMAT ", "
726 "stop %" G_GINT64_FORMAT, update, rate, arate, GST_FORMAT_TIME,
728 gst_avi_demux_push_event (avi,
729 gst_event_new_new_segment_full (update, rate, arate, GST_FORMAT_TIME,
732 GST_DEBUG_OBJECT (avi, "next chunk expected at %" G_GINT64_FORMAT, start);
734 /* adjust state for streaming thread accordingly */
735 avi->offset = offset;
736 gst_avi_demux_seek_streams (avi, offset, FALSE);
738 /* set up streaming thread */
739 avi->offset = offset;
740 avi->todrop = start - offset;
743 /* in any case, clear leftover in current segment, if any */
744 gst_adapter_clear (avi->adapter);
745 gst_event_unref (event);
750 avi->have_eos = TRUE;
755 if (avi->state != GST_AVI_DEMUX_MOVI) {
756 gst_event_unref (event);
757 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
758 (NULL), ("got eos and didn't receive a complete header object"));
759 } else if (!gst_avi_demux_push_event (avi, event)) {
760 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
761 (NULL), ("got eos but no streams (yet)"));
766 res = gst_pad_event_default (pad, event);
770 gst_object_unref (avi);
776 gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
779 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
781 GST_DEBUG_OBJECT (avi,
782 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
784 switch (GST_EVENT_TYPE (event)) {
786 /* handle seeking only in pull mode */
787 if (!avi->streaming) {
788 res = gst_avi_demux_handle_seek (avi, pad, event);
790 res = gst_avi_demux_handle_seek_push (avi, pad, event);
792 gst_event_unref (event);
795 case GST_EVENT_NAVIGATION:
797 gst_event_unref (event);
800 res = gst_pad_event_default (pad, event);
804 gst_object_unref (avi);
809 /* streaming helper (push) */
812 * gst_avi_demux_peek_chunk_info:
814 * @tag: holder for tag
815 * @size: holder for tag size
817 * Peek next chunk info (tag and size)
819 * Returns: TRUE when one chunk info has been got
822 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
824 const guint8 *data = NULL;
826 if (gst_adapter_available (avi->adapter) < 8)
829 data = gst_adapter_peek (avi->adapter, 8);
830 *tag = GST_READ_UINT32_LE (data);
831 *size = GST_READ_UINT32_LE (data + 4);
837 * gst_avi_demux_peek_chunk:
839 * @tag: holder for tag
840 * @size: holder for tag size
842 * Peek enough data for one full chunk
844 * Returns: %TRUE when one chunk has been got
847 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
849 guint32 peek_size = 0;
852 if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
855 /* size 0 -> empty data buffer would surprise most callers,
856 * large size -> do not bother trying to squeeze that into adapter,
857 * so we throw poor man's exception, which can be caught if caller really
858 * wants to handle 0 size chunk */
859 if (!(*size) || (*size) >= (1 << 30))
862 peek_size = (*size + 1) & ~1;
863 available = gst_adapter_available (avi->adapter);
865 GST_DEBUG_OBJECT (avi,
866 "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
867 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
869 if (available < (8 + peek_size))
877 GST_INFO_OBJECT (avi, "Failed to peek");
882 GST_INFO_OBJECT (avi,
883 "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
884 GST_FOURCC_ARGS (*tag));
885 /* chain should give up */
886 avi->abort_buffering = TRUE;
891 GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
892 available, 8 + peek_size);
900 * gst_avi_demux_parse_file_header:
901 * @element: caller element (used for errors/debug).
902 * @buf: input data to be used for parsing.
904 * "Open" a RIFF/AVI file. The buffer should be at least 12
905 * bytes long. Takes ownership of @buf.
907 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
908 * Throws an error, caller should error out (fatal).
911 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
916 stamp = gst_util_get_timestamp ();
918 /* riff_parse posts an error */
919 if (!gst_riff_parse_file_header (element, buf, &doctype))
922 if (doctype != GST_RIFF_RIFF_AVI)
925 stamp = gst_util_get_timestamp () - stamp;
926 GST_DEBUG_OBJECT (element, "parsing header %" GST_TIME_FORMAT,
927 GST_TIME_ARGS (stamp));
934 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
935 ("File is not an AVI file: %" GST_FOURCC_FORMAT,
936 GST_FOURCC_ARGS (doctype)));
942 * Read AVI file tag when streaming
945 gst_avi_demux_stream_init_push (GstAviDemux * avi)
947 if (gst_adapter_available (avi->adapter) >= 12) {
950 tmp = gst_adapter_take_buffer (avi->adapter, 12);
952 GST_DEBUG ("Parsing avi header");
953 if (!gst_avi_demux_parse_file_header (GST_ELEMENT (avi), tmp)) {
954 return GST_FLOW_ERROR;
956 GST_DEBUG ("header ok");
959 avi->state = GST_AVI_DEMUX_HEADER;
968 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
971 GstBuffer *buf = NULL;
973 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
974 if (res != GST_FLOW_OK)
976 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
986 GST_DEBUG_OBJECT (avi, "error parsing file header");
987 return GST_FLOW_ERROR;
991 /* AVI header handling */
994 * gst_avi_demux_parse_avih:
995 * @element: caller element (used for errors/debug).
996 * @buf: input data to be used for parsing.
997 * @avih: pointer to structure (filled in by function) containing
998 * stream information (such as flags, number of streams, etc.).
1000 * Read 'avih' header. Discards buffer after use.
1002 * Returns: TRUE on success, FALSE otherwise. Throws an error if
1003 * the header is invalid. The caller should error out
1007 gst_avi_demux_parse_avih (GstElement * element,
1008 GstBuffer * buf, gst_riff_avih ** _avih)
1010 gst_riff_avih *avih;
1015 if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
1016 goto avih_too_small;
1018 avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1020 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1021 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
1022 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
1023 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
1024 avih->flags = GUINT32_FROM_LE (avih->flags);
1025 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
1026 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
1027 avih->streams = GUINT32_FROM_LE (avih->streams);
1028 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
1029 avih->width = GUINT32_FROM_LE (avih->width);
1030 avih->height = GUINT32_FROM_LE (avih->height);
1031 avih->scale = GUINT32_FROM_LE (avih->scale);
1032 avih->rate = GUINT32_FROM_LE (avih->rate);
1033 avih->start = GUINT32_FROM_LE (avih->start);
1034 avih->length = GUINT32_FROM_LE (avih->length);
1038 GST_INFO_OBJECT (element, "avih tag found:");
1039 GST_INFO_OBJECT (element, " us_frame %u", avih->us_frame);
1040 GST_INFO_OBJECT (element, " max_bps %u", avih->max_bps);
1041 GST_INFO_OBJECT (element, " pad_gran %u", avih->pad_gran);
1042 GST_INFO_OBJECT (element, " flags 0x%08x", avih->flags);
1043 GST_INFO_OBJECT (element, " tot_frames %u", avih->tot_frames);
1044 GST_INFO_OBJECT (element, " init_frames %u", avih->init_frames);
1045 GST_INFO_OBJECT (element, " streams %u", avih->streams);
1046 GST_INFO_OBJECT (element, " bufsize %u", avih->bufsize);
1047 GST_INFO_OBJECT (element, " width %u", avih->width);
1048 GST_INFO_OBJECT (element, " height %u", avih->height);
1049 GST_INFO_OBJECT (element, " scale %u", avih->scale);
1050 GST_INFO_OBJECT (element, " rate %u", avih->rate);
1051 GST_INFO_OBJECT (element, " start %u", avih->start);
1052 GST_INFO_OBJECT (element, " length %u", avih->length);
1055 gst_buffer_unref (buf);
1062 GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL), ("No buffer"));
1067 GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL),
1068 ("Too small avih (%d available, %d needed)",
1069 GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
1070 gst_buffer_unref (buf);
1076 * gst_avi_demux_parse_superindex:
1077 * @avi: caller element (used for debugging/errors).
1078 * @buf: input data to use for parsing.
1079 * @locations: locations in the file (byte-offsets) that contain
1080 * the actual indexes (see get_avi_demux_parse_subindex()).
1081 * The array ends with GST_BUFFER_OFFSET_NONE.
1083 * Reads superindex (openDML-2 spec stuff) from the provided data.
1085 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
1086 * on error, but they are not fatal.
1089 gst_avi_demux_parse_superindex (GstAviDemux * avi,
1090 GstBuffer * buf, guint64 ** _indexes)
1100 size = buf ? GST_BUFFER_SIZE (buf) : 0;
1104 data = GST_BUFFER_DATA (buf);
1106 /* check type of index. The opendml2 specs state that
1107 * there should be 4 dwords per array entry. Type can be
1108 * either frame or field (and we don't care). */
1109 if (GST_READ_UINT16_LE (data) != 4 ||
1110 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
1111 GST_WARNING_OBJECT (avi,
1112 "Superindex for stream has unexpected "
1113 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1114 GST_READ_UINT16_LE (data), data[2], data[3]);
1115 bpe = GST_READ_UINT16_LE (data) * 4;
1117 num = GST_READ_UINT32_LE (&data[4]);
1119 GST_DEBUG_OBJECT (avi, "got %d indexes", num);
1121 indexes = g_new (guint64, num + 1);
1122 for (i = 0; i < num; i++) {
1123 if (size < 24 + bpe * (i + 1))
1125 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1126 GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
1128 indexes[i] = GST_BUFFER_OFFSET_NONE;
1129 *_indexes = indexes;
1131 gst_buffer_unref (buf);
1138 GST_ERROR_OBJECT (avi,
1139 "Not enough data to parse superindex (%d available, 24 needed)", size);
1141 gst_buffer_unref (buf);
1146 /* add an entry to the index of a stream. @num should be an estimate of the
1147 * total amount of index entries for all streams and is used to dynamically
1148 * allocate memory for the index entries. */
1149 static inline gboolean
1150 gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
1151 guint num, GstAviIndexEntry * entry)
1153 /* ensure index memory */
1154 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
1155 guint idx_max = stream->idx_max;
1156 GstAviIndexEntry *new_idx;
1158 /* we need to make some more room */
1160 /* initial size guess, assume each stream has an equal amount of entries,
1161 * overshoot with at least 8K */
1162 idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
1164 idx_max += 8192 / sizeof (GstAviIndexEntry);
1165 GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
1166 stream->idx_max, idx_max);
1168 new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
1169 /* out of memory, if this fails stream->index is untouched. */
1170 if (G_UNLIKELY (!new_idx))
1173 stream->index = new_idx;
1174 stream->idx_max = idx_max;
1177 /* update entry total and stream stats. The entry total can be converted to
1178 * the timestamp of the entry easily. */
1179 if (stream->strh->type == GST_RIFF_FCC_auds) {
1182 if (stream->is_vbr) {
1183 entry->total = stream->total_blocks;
1185 entry->total = stream->total_bytes;
1187 blockalign = stream->strf.auds->blockalign;
1189 stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
1191 stream->total_blocks++;
1193 if (stream->is_vbr) {
1194 entry->total = stream->idx_n;
1196 entry->total = stream->total_bytes;
1199 stream->total_bytes += entry->size;
1200 if (ENTRY_IS_KEYFRAME (entry))
1201 stream->n_keyframes++;
1204 GST_LOG_OBJECT (avi,
1205 "Adding stream %u, index entry %d, kf %d, size %u "
1206 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
1207 stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
1209 stream->index[stream->idx_n++] = *entry;
1214 /* given @entry_n in @stream, calculate info such as timestamps and
1215 * offsets for the entry. */
1217 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1218 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1219 guint64 * offset, guint64 * offset_end)
1221 GstAviIndexEntry *entry;
1223 entry = &stream->index[entry_n];
1225 if (stream->is_vbr) {
1226 /* VBR stream next timestamp */
1227 if (stream->strh->type == GST_RIFF_FCC_auds) {
1230 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
1232 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1237 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
1239 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1242 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
1243 /* constant rate stream */
1246 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
1248 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
1249 entry->total + entry->size);
1251 if (stream->strh->type == GST_RIFF_FCC_vids) {
1252 /* video offsets are the frame number */
1256 *offset_end = entry_n + 1;
1258 /* no offsets for audio */
1266 /* collect and debug stats about the indexes for all streams.
1267 * This method is also responsible for filling in the stream duration
1268 * as measured by the amount of index entries.
1270 * Returns TRUE if the index is not empty, else FALSE */
1272 gst_avi_demux_do_index_stats (GstAviDemux * avi)
1275 #ifndef GST_DISABLE_GST_DEBUG
1276 guint total_idx = 0, total_max = 0;
1279 /* get stream stats now */
1280 for (i = 0; i < avi->num_streams; i++) {
1281 GstAviStream *stream;
1283 if (G_UNLIKELY (!(stream = &avi->stream[i])))
1285 if (G_UNLIKELY (!stream->strh))
1287 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
1290 /* we interested in the end_ts of the last entry, which is the total
1291 * duration of this stream */
1292 gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
1293 NULL, &stream->idx_duration, NULL, NULL);
1295 #ifndef GST_DISABLE_GST_DEBUG
1296 total_idx += stream->idx_n;
1297 total_max += stream->idx_max;
1299 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
1300 "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
1301 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
1302 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
1303 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
1304 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
1306 #ifndef GST_DISABLE_GST_DEBUG
1307 total_idx *= sizeof (GstAviIndexEntry);
1308 total_max *= sizeof (GstAviIndexEntry);
1310 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
1311 total_max, total_idx, total_max - total_idx);
1313 if (total_idx == 0) {
1314 GST_WARNING_OBJECT (avi, "Index is empty !");
1321 * gst_avi_demux_parse_subindex:
1323 * @buf: input data to use for parsing.
1324 * @stream: stream context.
1325 * @entries_list: a list (returned by the function) containing all the
1326 * indexes parsed in this specific subindex. The first
1327 * entry is also a pointer to allocated memory that needs
1328 * to be free´ed. May be NULL if no supported indexes were
1331 * Reads superindex (openDML-2 spec stuff) from the provided data.
1332 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1334 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1335 * throw an error, caller should bail out asap.
1338 gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
1350 size = GST_BUFFER_SIZE (buf);
1356 data = GST_BUFFER_DATA (buf);
1358 /* We don't support index-data yet */
1360 goto not_implemented;
1362 /* check type of index. The opendml2 specs state that
1363 * there should be 4 dwords per array entry. Type can be
1364 * either frame or field (and we don't care). */
1365 bpe = (data[2] & 0x01) ? 12 : 8;
1366 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1367 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1368 GST_WARNING_OBJECT (avi,
1369 "Superindex for stream %d has unexpected "
1370 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1371 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1372 bpe = GST_READ_UINT16_LE (data) * 4;
1374 num = GST_READ_UINT32_LE (&data[4]);
1375 baseoff = GST_READ_UINT64_LE (&data[12]);
1377 /* If there's nothing, just return ! */
1381 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1383 for (i = 0; i < num; i++) {
1384 GstAviIndexEntry entry;
1386 if (size < 24 + bpe * (i + 1))
1389 /* fill in offset and size. offset contains the keyframe flag in the
1391 entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1392 entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1394 if (stream->strh->type == GST_RIFF_FCC_auds) {
1395 /* all audio frames are keyframes */
1396 ENTRY_SET_KEYFRAME (&entry);
1398 /* else read flags */
1399 entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
1401 entry.size &= ~0x80000000;
1404 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
1407 gst_buffer_unref (buf);
1414 GST_ERROR_OBJECT (avi,
1415 "Not enough data to parse subindex (%d available, 24 needed)", size);
1416 gst_buffer_unref (buf);
1417 return TRUE; /* continue */
1421 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1422 ("Subindex-is-data is not implemented"));
1423 gst_buffer_unref (buf);
1428 GST_DEBUG_OBJECT (avi, "the index is empty");
1429 gst_buffer_unref (buf);
1434 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1435 ("Cannot allocate memory for %u*%u=%u bytes",
1436 (guint) sizeof (GstAviIndexEntry), num,
1437 (guint) sizeof (GstAviIndexEntry) * num));
1438 gst_buffer_unref (buf);
1445 * Read AVI index when streaming
1448 gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
1450 guint32 tag = 0, size;
1451 GstBuffer *buf = NULL;
1454 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1456 for (n = 0; n < avi->num_streams; n++) {
1457 GstAviStream *stream = &avi->stream[n];
1459 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1460 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1462 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1463 '0' + stream->num % 10)) &&
1464 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1465 '0' + stream->num % 10, 'i', 'x'))) {
1466 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1467 GST_FOURCC_ARGS (tag));
1471 avi->offset += 8 + GST_ROUND_UP_2 (size);
1473 buf = gst_buffer_new ();
1474 GST_BUFFER_DATA (buf) = gst_adapter_take (avi->adapter, size);
1475 GST_BUFFER_SIZE (buf) = size;
1477 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1481 g_free (stream->indexes);
1482 stream->indexes = NULL;
1484 /* get stream stats now */
1485 avi->have_index = gst_avi_demux_do_index_stats (avi);
1493 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
1499 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1501 for (n = 0; n < avi->num_streams; n++) {
1502 GstAviStream *stream = &avi->stream[n];
1504 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1505 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
1506 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1508 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1509 '0' + stream->num % 10)) &&
1510 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1511 '0' + stream->num % 10, 'i', 'x'))) {
1512 /* Some ODML files (created by god knows what muxer) have a ##ix format
1513 * instead of the 'official' ix##. They are still valid though. */
1514 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1515 GST_FOURCC_ARGS (tag));
1516 gst_buffer_unref (buf);
1520 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1524 g_free (stream->indexes);
1525 stream->indexes = NULL;
1527 /* get stream stats now */
1528 avi->have_index = gst_avi_demux_do_index_stats (avi);
1532 * gst_avi_demux_riff_parse_vprp:
1533 * @element: caller element (used for debugging/error).
1534 * @buf: input data to be used for parsing, stripped from header.
1535 * @vprp: a pointer (returned by this function) to a filled-in vprp
1536 * structure. Caller should free it.
1538 * Parses a video stream´s vprp. This function takes ownership of @buf.
1540 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1541 * should be skipped on error, but it is not fatal.
1544 gst_avi_demux_riff_parse_vprp (GstElement * element,
1545 GstBuffer * buf, gst_riff_vprp ** _vprp)
1547 gst_riff_vprp *vprp;
1550 g_return_val_if_fail (buf != NULL, FALSE);
1551 g_return_val_if_fail (_vprp != NULL, FALSE);
1553 if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1556 vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1558 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1559 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1560 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1561 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1562 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1563 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1564 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1565 vprp->width = GUINT32_FROM_LE (vprp->width);
1566 vprp->height = GUINT32_FROM_LE (vprp->height);
1567 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1571 /* calculate fields based on size */
1572 k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
1574 if (vprp->fields > k) {
1575 GST_WARNING_OBJECT (element,
1576 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1579 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1580 GST_WARNING_OBJECT (element,
1581 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1582 GST_RIFF_VPRP_VIDEO_FIELDS);
1583 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1585 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1586 for (k = 0; k < vprp->fields; k++) {
1587 gst_riff_vprp_video_field_desc *fd;
1589 fd = &vprp->field_info[k];
1590 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1591 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1592 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1593 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1594 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1595 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1596 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1597 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1602 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1603 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1604 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1605 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1606 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1607 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1608 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1609 vprp->aspect & 0xffff);
1610 GST_INFO_OBJECT (element, " width %d", vprp->width);
1611 GST_INFO_OBJECT (element, " height %d", vprp->height);
1612 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1613 for (k = 0; k < vprp->fields; k++) {
1614 gst_riff_vprp_video_field_desc *fd;
1616 fd = &(vprp->field_info[k]);
1617 GST_INFO_OBJECT (element, " field %u description:", k);
1618 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1619 fd->compressed_bm_height);
1620 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1621 fd->compressed_bm_width);
1622 GST_INFO_OBJECT (element, " valid_bm_height %d",
1623 fd->valid_bm_height);
1624 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1625 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1626 fd->valid_bm_x_offset);
1627 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1628 fd->valid_bm_y_offset);
1629 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1630 fd->video_x_t_offset);
1631 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1634 gst_buffer_unref (buf);
1643 GST_ERROR_OBJECT (element,
1644 "Too small vprp (%d available, at least %d needed)",
1645 GST_BUFFER_SIZE (buf),
1646 (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1647 gst_buffer_unref (buf);
1653 gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
1657 GST_DEBUG_OBJECT (avi, "force : %d", force);
1659 for (i = 0; i < avi->num_streams; i++) {
1660 GstAviStream *stream = &avi->stream[i];
1662 if (force || stream->idx_n != 0) {
1663 GST_LOG_OBJECT (avi, "Added pad %s with caps %" GST_PTR_FORMAT,
1664 GST_PAD_NAME (stream->pad), GST_PAD_CAPS (stream->pad));
1665 gst_element_add_pad ((GstElement *) avi, stream->pad);
1666 stream->exposed = TRUE;
1667 if (avi->main_stream == -1)
1668 avi->main_stream = i;
1670 GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
1672 gst_avi_demux_reset_stream (avi, stream);
1678 * gst_avi_demux_parse_stream:
1679 * @avi: calling element (used for debugging/errors).
1680 * @buf: input buffer used to parse the stream.
1682 * Parses all subchunks in a strl chunk (which defines a single
1683 * stream). Discards the buffer after use. This function will
1684 * increment the stream counter internally.
1686 * Returns: whether the stream was identified successfully.
1687 * Errors are not fatal. It does indicate the stream
1691 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1693 GstAviStream *stream;
1694 GstElementClass *klass;
1695 GstPadTemplate *templ;
1696 GstBuffer *sub = NULL;
1699 gchar *codec_name = NULL, *padname = NULL;
1700 const gchar *tag_name;
1701 GstCaps *caps = NULL;
1703 GstElement *element;
1704 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1705 gst_riff_vprp *vprp = NULL;
1707 element = GST_ELEMENT_CAST (avi);
1709 GST_DEBUG_OBJECT (avi, "Parsing stream");
1711 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1712 GST_WARNING_OBJECT (avi,
1713 "maximum no of streams (%d) exceeded, ignoring stream",
1714 GST_AVI_DEMUX_MAX_STREAMS);
1715 gst_buffer_unref (buf);
1716 /* not a fatal error, let's say */
1720 stream = &avi->stream[avi->num_streams];
1722 /* initial settings */
1723 stream->idx_duration = GST_CLOCK_TIME_NONE;
1724 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1725 stream->duration = GST_CLOCK_TIME_NONE;
1727 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1728 /* sub can be NULL if the chunk is empty */
1730 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1731 GST_FOURCC_ARGS (tag));
1735 case GST_RIFF_TAG_strh:
1737 gst_riff_strh *strh;
1740 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1743 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1744 /* ownership given away */
1746 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1750 strh = stream->strh;
1751 /* sanity check; stream header frame rate matches global header
1753 if (stream->strh->type == GST_RIFF_FCC_vids) {
1755 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1757 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1758 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1759 "frame duration = %d ms", strh->rate, strh->scale,
1760 (gint) (s_dur / GST_MSECOND));
1761 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1762 strh->rate = GST_SECOND / GST_USECOND;
1763 strh->scale = h_dur / GST_USECOND;
1764 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1765 strh->rate, strh->scale);
1768 /* determine duration as indicated by header */
1769 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1770 strh->scale, GST_SECOND, (guint64) strh->rate);
1771 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1772 GST_TIME_ARGS (stream->hdr_duration));
1773 if (stream->hdr_duration == 0)
1774 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1779 case GST_RIFF_TAG_strf:
1781 gboolean res = FALSE;
1784 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
1788 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
1791 switch (stream->strh->type) {
1792 case GST_RIFF_FCC_vids:
1793 stream->is_vbr = TRUE;
1794 res = gst_riff_parse_strf_vids (element, sub,
1795 &stream->strf.vids, &stream->extradata);
1797 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
1799 case GST_RIFF_FCC_auds:
1800 stream->is_vbr = (stream->strh->samplesize == 0)
1801 && stream->strh->scale > 1;
1803 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
1804 &stream->extradata);
1806 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
1807 stream->is_vbr, res);
1809 case GST_RIFF_FCC_iavs:
1810 stream->is_vbr = TRUE;
1811 res = gst_riff_parse_strf_iavs (element, sub,
1812 &stream->strf.iavs, &stream->extradata);
1814 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
1816 case GST_RIFF_FCC_txts:
1817 /* nothing to parse here */
1818 stream->is_vbr = (stream->strh->samplesize == 0)
1819 && (stream->strh->scale > 1);
1823 GST_ERROR_OBJECT (avi,
1824 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
1825 GST_FOURCC_ARGS (stream->strh->type));
1829 gst_buffer_unref (sub);
1837 case GST_RIFF_TAG_vprp:
1840 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
1844 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
1848 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
1852 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
1853 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
1854 /* not considered fatal */
1862 case GST_RIFF_TAG_strd:
1863 if (stream->initdata)
1864 gst_buffer_unref (stream->initdata);
1865 stream->initdata = sub;
1868 case GST_RIFF_TAG_strn:
1869 g_free (stream->name);
1872 g_strndup ((gchar *) GST_BUFFER_DATA (sub),
1873 (gsize) GST_BUFFER_SIZE (sub));
1874 gst_buffer_unref (sub);
1877 stream->name = g_strdup ("");
1879 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
1882 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
1883 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
1884 '0' + avi->num_streams % 10)) {
1885 g_free (stream->indexes);
1886 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
1887 stream->superindex = TRUE;
1891 GST_WARNING_OBJECT (avi,
1892 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
1893 GST_FOURCC_ARGS (tag));
1895 case GST_RIFF_TAG_JUNK:
1899 gst_buffer_unref (sub);
1905 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
1910 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
1914 /* get class to figure out the template */
1915 klass = GST_ELEMENT_GET_CLASS (avi);
1917 /* we now have all info, let´s set up a pad and a caps and be done */
1918 /* create stream name + pad */
1919 switch (stream->strh->type) {
1920 case GST_RIFF_FCC_vids:{
1923 fourcc = (stream->strf.vids->compression) ?
1924 stream->strf.vids->compression : stream->strh->fcc_handler;
1925 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
1926 templ = gst_element_class_get_pad_template (klass, "video_%02d");
1927 caps = gst_riff_create_video_caps (fourcc, stream->strh,
1928 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
1930 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
1931 GST_TYPE_FOURCC, fourcc, NULL);
1932 } else if (got_vprp && vprp) {
1933 guint32 aspect_n, aspect_d;
1936 aspect_n = vprp->aspect >> 16;
1937 aspect_d = vprp->aspect & 0xffff;
1938 /* calculate the pixel aspect ratio using w/h and aspect ratio */
1939 n = aspect_n * stream->strf.vids->height;
1940 d = aspect_d * stream->strf.vids->width;
1942 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
1944 /* very local, not needed elsewhere */
1948 tag_name = GST_TAG_VIDEO_CODEC;
1949 avi->num_v_streams++;
1952 case GST_RIFF_FCC_auds:{
1953 padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
1954 templ = gst_element_class_get_pad_template (klass, "audio_%02d");
1955 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
1956 stream->strh, stream->strf.auds, stream->extradata,
1957 stream->initdata, &codec_name);
1959 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
1960 G_TYPE_INT, stream->strf.auds->format, NULL);
1962 tag_name = GST_TAG_AUDIO_CODEC;
1963 avi->num_a_streams++;
1966 case GST_RIFF_FCC_iavs:{
1967 guint32 fourcc = stream->strh->fcc_handler;
1969 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
1970 templ = gst_element_class_get_pad_template (klass, "video_%02d");
1971 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
1972 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
1974 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
1975 GST_TYPE_FOURCC, fourcc, NULL);
1977 tag_name = GST_TAG_VIDEO_CODEC;
1978 avi->num_v_streams++;
1981 case GST_RIFF_FCC_txts:{
1982 padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
1983 templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
1984 caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
1986 avi->num_t_streams++;
1990 g_assert_not_reached ();
1993 /* no caps means no stream */
1995 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
1999 GST_DEBUG_OBJECT (element, "codec-name=%s",
2000 (codec_name ? codec_name : "NULL"));
2001 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
2003 /* set proper settings and add it */
2005 gst_object_unref (stream->pad);
2006 pad = stream->pad = gst_pad_new_from_template (templ, padname);
2009 gst_pad_use_fixed_caps (pad);
2011 gst_pad_set_formats_function (pad,
2012 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
2013 gst_pad_set_event_mask_function (pad,
2014 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
2016 gst_pad_set_event_function (pad,
2017 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
2018 gst_pad_set_query_type_function (pad,
2019 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
2020 gst_pad_set_query_function (pad,
2021 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
2023 gst_pad_set_convert_function (pad,
2024 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
2027 if (avi->element_index)
2028 gst_index_get_writer_id (avi->element_index, GST_OBJECT (stream->pad),
2031 stream->num = avi->num_streams;
2033 stream->start_entry = 0;
2034 stream->step_entry = 0;
2035 stream->stop_entry = 0;
2037 stream->current_entry = -1;
2038 stream->current_total = 0;
2040 stream->last_flow = GST_FLOW_OK;
2041 stream->discont = TRUE;
2043 stream->total_bytes = 0;
2044 stream->total_blocks = 0;
2045 stream->n_keyframes = 0;
2048 stream->idx_max = 0;
2050 gst_pad_set_element_private (pad, stream);
2053 gst_pad_set_caps (pad, caps);
2054 gst_pad_set_active (pad, TRUE);
2055 gst_caps_unref (caps);
2059 if (!stream->taglist)
2060 stream->taglist = gst_tag_list_new ();
2062 avi->got_tags = TRUE;
2064 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
2066 g_free (codec_name);
2069 gst_buffer_unref (buf);
2076 /* unref any mem that may be in use */
2078 gst_buffer_unref (buf);
2080 gst_buffer_unref (sub);
2082 g_free (codec_name);
2083 gst_avi_demux_reset_stream (avi, stream);
2090 * gst_avi_demux_parse_odml:
2091 * @avi: calling element (used for debug/error).
2092 * @buf: input buffer to be used for parsing.
2094 * Read an openDML-2.0 extension header. Fills in the frame number
2095 * in the avi demuxer object when reading succeeds.
2098 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
2102 GstBuffer *sub = NULL;
2104 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2107 case GST_RIFF_TAG_dmlh:{
2108 gst_riff_dmlh dmlh, *_dmlh;
2111 /* sub == NULL is possible and means an empty buffer */
2112 size = sub ? GST_BUFFER_SIZE (sub) : 0;
2115 if (size < sizeof (gst_riff_dmlh)) {
2116 GST_ERROR_OBJECT (avi,
2117 "DMLH entry is too small (%d bytes, %d needed)",
2118 size, (int) sizeof (gst_riff_dmlh));
2121 _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
2122 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
2124 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
2127 avi->avih->tot_frames = dmlh.totalframes;
2132 GST_WARNING_OBJECT (avi,
2133 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
2134 GST_FOURCC_ARGS (tag));
2136 case GST_RIFF_TAG_JUNK:
2138 /* skip and move to next chunk */
2140 gst_buffer_unref (sub);
2147 gst_buffer_unref (buf);
2152 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
2154 return stream->idx_n - 1;
2157 /* find a previous entry in the index with the given flags */
2159 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
2160 guint last, gboolean keyframe)
2162 GstAviIndexEntry *entry;
2165 for (i = last; i > 0; i--) {
2166 entry = &stream->index[i - 1];
2167 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2175 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
2176 guint last, gboolean keyframe)
2178 GstAviIndexEntry *entry;
2181 for (i = last + 1; i < stream->idx_n; i++) {
2182 entry = &stream->index[i];
2183 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2187 return stream->idx_n - 1;
2191 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
2193 if (entry->total < *total)
2195 else if (entry->total > *total)
2201 * gst_avi_demux_index_for_time:
2203 * @stream: the stream
2204 * @time: a time position
2206 * Finds the index entry which time is less or equal than the requested time.
2207 * Try to avoid binary search when we can convert the time to an index
2208 * position directly (for example for video frames with a fixed duration).
2210 * Returns: the found position in the index.
2213 gst_avi_demux_index_for_time (GstAviDemux * avi,
2214 GstAviStream * stream, guint64 time)
2219 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
2221 /* easy (and common) cases */
2222 if (time == 0 || stream->idx_n == 0)
2224 if (time >= stream->idx_duration)
2225 return stream->idx_n - 1;
2227 /* figure out where we need to go. For that we convert the time to an
2228 * index entry or we convert it to a total and then do a binary search. */
2229 if (stream->is_vbr) {
2230 /* VBR stream next timestamp */
2231 if (stream->strh->type == GST_RIFF_FCC_auds) {
2232 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
2234 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
2237 /* constant rate stream */
2238 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
2242 GstAviIndexEntry *entry;
2244 /* no index, find index with binary search on total */
2245 GST_LOG_OBJECT (avi, "binary search for entry with total %"
2246 G_GUINT64_FORMAT, total);
2248 entry = gst_util_array_binary_search (stream->index,
2249 stream->idx_n, sizeof (GstAviIndexEntry),
2250 (GCompareDataFunc) gst_avi_demux_index_entry_search,
2251 GST_SEARCH_MODE_BEFORE, &total, NULL);
2253 if (entry == NULL) {
2254 GST_LOG_OBJECT (avi, "not found, assume index 0");
2257 index = entry - stream->index;
2258 GST_LOG_OBJECT (avi, "found at %u", index);
2261 GST_LOG_OBJECT (avi, "converted time to index %u", index);
2267 static inline GstAviStream *
2268 gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
2271 GstAviStream *stream;
2273 /* get the stream for this entry */
2274 stream_nr = CHUNKID_TO_STREAMNR (id);
2275 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2276 GST_WARNING_OBJECT (avi, "invalid stream nr %d", stream_nr);
2279 stream = &avi->stream[stream_nr];
2280 if (G_UNLIKELY (!stream->strh)) {
2281 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2288 * gst_avi_demux_parse_index:
2289 * @avi: calling element (used for debugging/errors).
2290 * @buf: buffer containing the full index.
2292 * Read index entries from the provided buffer.
2293 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2296 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2302 gst_riff_index_entry *index;
2304 GstAviStream *stream;
2305 GstAviIndexEntry entry;
2311 data = GST_BUFFER_DATA (buf);
2312 size = GST_BUFFER_SIZE (buf);
2314 stamp = gst_util_get_timestamp ();
2316 /* see how many items in the index */
2317 num = size / sizeof (gst_riff_index_entry);
2321 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2323 index = (gst_riff_index_entry *) data;
2324 pos_before = avi->offset;
2326 /* figure out if the index is 0 based or relative to the MOVI start */
2327 entry.offset = GST_READ_UINT32_LE (&index[0].offset);
2328 if (entry.offset < avi->offset) {
2329 avi->index_offset = avi->offset + 8;
2330 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2332 avi->index_offset = 0;
2333 GST_DEBUG ("index is 0 based");
2336 for (i = 0, n = 0; i < num; i++) {
2337 id = GST_READ_UINT32_LE (&index[i].id);
2338 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2340 /* some sanity checks */
2341 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2342 (entry.offset == 0 && n > 0)))
2345 /* get the stream for this entry */
2346 stream = gst_avi_demux_stream_for_id (avi, id);
2347 if (G_UNLIKELY (!stream))
2350 /* handle offset and size */
2351 entry.offset += avi->index_offset + 8;
2352 entry.size = GST_READ_UINT32_LE (&index[i].size);
2355 if (stream->strh->type == GST_RIFF_FCC_auds) {
2356 /* all audio frames are keyframes */
2357 ENTRY_SET_KEYFRAME (&entry);
2360 /* else read flags */
2361 flags = GST_READ_UINT32_LE (&index[i].flags);
2362 if (flags & GST_RIFF_IF_KEYFRAME) {
2363 ENTRY_SET_KEYFRAME (&entry);
2365 ENTRY_UNSET_KEYFRAME (&entry);
2370 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2375 gst_buffer_unref (buf);
2377 /* get stream stats now */
2378 avi->have_index = gst_avi_demux_do_index_stats (avi);
2380 stamp = gst_util_get_timestamp () - stamp;
2381 GST_DEBUG_OBJECT (avi, "parsing index %" GST_TIME_FORMAT,
2382 GST_TIME_ARGS (stamp));
2389 GST_DEBUG_OBJECT (avi, "empty index");
2390 gst_buffer_unref (buf);
2395 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2396 ("Cannot allocate memory for %u*%u=%u bytes",
2397 (guint) sizeof (GstAviIndexEntry), num,
2398 (guint) sizeof (GstAviIndexEntry) * num));
2399 gst_buffer_unref (buf);
2405 * gst_avi_demux_stream_index:
2406 * @avi: avi demuxer object.
2408 * Seeks to index and reads it.
2411 gst_avi_demux_stream_index (GstAviDemux * avi)
2414 guint64 offset = avi->offset;
2419 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2421 /* get chunk information */
2422 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2423 if (res != GST_FLOW_OK)
2425 else if (GST_BUFFER_SIZE (buf) < 8)
2428 /* check tag first before blindy trying to read 'size' bytes */
2429 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2430 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2431 if (tag == GST_RIFF_TAG_LIST) {
2432 /* this is the movi tag */
2433 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2434 (8 + GST_ROUND_UP_2 (size)));
2435 offset += 8 + GST_ROUND_UP_2 (size);
2436 gst_buffer_unref (buf);
2437 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2438 if (res != GST_FLOW_OK)
2440 else if (GST_BUFFER_SIZE (buf) < 8)
2442 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2443 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2446 if (tag != GST_RIFF_TAG_idx1)
2451 gst_buffer_unref (buf);
2453 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2455 /* read chunk, advance offset */
2456 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2457 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2460 GST_DEBUG ("will parse index chunk size %u for tag %"
2461 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2463 gst_avi_demux_parse_index (avi, buf);
2465 #ifndef GST_DISABLE_GST_DEBUG
2466 /* debug our indexes */
2469 GstAviStream *stream;
2471 for (i = 0; i < avi->num_streams; i++) {
2472 stream = &avi->stream[i];
2473 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2474 i, stream->idx_n, stream->total_bytes);
2483 GST_DEBUG_OBJECT (avi,
2484 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2489 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2490 gst_buffer_unref (buf);
2495 GST_WARNING_OBJECT (avi,
2496 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2497 GST_FOURCC_ARGS (tag));
2498 gst_buffer_unref (buf);
2503 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2504 gst_buffer_unref (buf);
2510 * gst_avi_demux_peek_tag:
2512 * Returns the tag and size of the next chunk
2514 static GstFlowReturn
2515 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2518 GstFlowReturn res = GST_FLOW_OK;
2519 GstBuffer *buf = NULL;
2523 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2524 if (res != GST_FLOW_OK)
2527 bufsize = GST_BUFFER_SIZE (buf);
2531 bufdata = GST_BUFFER_DATA (buf);
2533 *tag = GST_READ_UINT32_LE (bufdata);
2534 *size = GST_READ_UINT32_LE (bufdata + 4);
2536 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2537 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2538 *size, offset + 8, offset + 8 + (gint64) * size);
2541 gst_buffer_unref (buf);
2548 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2553 GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
2554 res = GST_FLOW_ERROR;
2560 * gst_avi_demux_next_data_buffer:
2562 * Returns the offset and size of the next buffer
2563 * Position is the position of the buffer (after tag and size)
2565 static GstFlowReturn
2566 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2567 guint32 * tag, guint * size)
2569 guint64 off = *offset;
2574 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2575 if (res != GST_FLOW_OK)
2577 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2578 off += 8 + 4; /* skip tag + size + subtag */
2590 * gst_avi_demux_stream_scan:
2591 * @avi: calling element (used for debugging/errors).
2593 * Scan the file for all chunks to "create" a new index.
2597 gst_avi_demux_stream_scan (GstAviDemux * avi)
2600 GstAviStream *stream;
2609 * - implement non-seekable source support.
2611 GST_DEBUG_OBJECT (avi, "Creating index");
2613 /* get the size of the file */
2614 format = GST_FORMAT_BYTES;
2615 if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
2619 /* guess the total amount of entries we expect */
2623 GstAviIndexEntry entry;
2626 /* start reading data buffers to find the id and offset */
2627 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2628 if (G_UNLIKELY (res != GST_FLOW_OK))
2632 stream = gst_avi_demux_stream_for_id (avi, tag);
2633 if (G_UNLIKELY (!stream))
2636 /* we can't figure out the keyframes, assume they all are */
2637 entry.flags = GST_AVI_KEYFRAME;
2641 /* and add to the index of this stream */
2642 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2646 /* update position */
2647 pos += GST_ROUND_UP_2 (size);
2648 if (G_UNLIKELY (pos > length)) {
2649 GST_WARNING_OBJECT (avi,
2650 "Stopping index lookup since we are further than EOF");
2656 avi->have_index = gst_avi_demux_do_index_stats (avi);
2664 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2665 ("Cannot allocate memory for %u*%u=%u bytes",
2666 (guint) sizeof (GstAviIndexEntry), num,
2667 (guint) sizeof (GstAviIndexEntry) * num));
2673 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
2677 GstAviStream *stream;
2679 total = GST_CLOCK_TIME_NONE;
2681 /* all streams start at a timestamp 0 */
2682 for (i = 0; i < avi->num_streams; i++) {
2683 GstClockTime duration, hduration;
2684 gst_riff_strh *strh;
2686 stream = &avi->stream[i];
2687 if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh)))
2690 /* get header duration for the stream */
2691 hduration = stream->hdr_duration;
2692 /* index duration calculated during parsing */
2693 duration = stream->idx_duration;
2695 /* now pick a good duration */
2696 if (GST_CLOCK_TIME_IS_VALID (duration)) {
2697 /* index gave valid duration, use that */
2698 GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT,
2699 stream, GST_TIME_ARGS (duration));
2701 /* fall back to header info to calculate a duration */
2702 duration = hduration;
2704 GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT,
2705 i, GST_TIME_ARGS (duration));
2706 /* set duration for the stream */
2707 stream->duration = duration;
2709 /* find total duration */
2710 if (total == GST_CLOCK_TIME_NONE ||
2711 (GST_CLOCK_TIME_IS_VALID (duration) && duration > total))
2715 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
2716 /* now update the duration for those streams where we had none */
2717 for (i = 0; i < avi->num_streams; i++) {
2718 stream = &avi->stream[i];
2720 if (!GST_CLOCK_TIME_IS_VALID (stream->duration)
2721 || stream->duration == 0) {
2722 stream->duration = total;
2724 GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT,
2725 stream, GST_TIME_ARGS (total));
2730 /* and set the total duration in the segment. */
2731 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
2732 GST_TIME_ARGS (total));
2734 gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
2737 /* returns FALSE if there are no pads to deliver event to,
2738 * otherwise TRUE (whatever the outcome of event sending),
2739 * takes ownership of the event. */
2741 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
2743 gboolean result = FALSE;
2746 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
2747 GST_EVENT_TYPE_NAME (event), avi->num_streams);
2749 for (i = 0; i < avi->num_streams; i++) {
2750 GstAviStream *stream = &avi->stream[i];
2754 gst_pad_push_event (stream->pad, gst_event_ref (event));
2757 gst_event_unref (event);
2762 gst_avi_demux_check_seekability (GstAviDemux * avi)
2765 gboolean seekable = FALSE;
2766 gint64 start = -1, stop = -1;
2768 query = gst_query_new_seeking (GST_FORMAT_BYTES);
2769 if (!gst_pad_peer_query (avi->sinkpad, query)) {
2770 GST_DEBUG_OBJECT (avi, "seeking query failed");
2774 gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
2776 /* try harder to query upstream size if we didn't get it the first time */
2777 if (seekable && stop == -1) {
2778 GstFormat fmt = GST_FORMAT_BYTES;
2780 GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
2781 gst_pad_query_peer_duration (avi->sinkpad, &fmt, &stop);
2784 /* if upstream doesn't know the size, it's likely that it's not seekable in
2785 * practice even if it technically may be seekable */
2786 if (seekable && (start != 0 || stop <= start)) {
2787 GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
2791 if (!avi->element_index) {
2792 GST_DEBUG_OBJECT (avi, "no index");
2797 GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
2798 G_GUINT64_FORMAT ")", seekable, start, stop);
2799 avi->seekable = seekable;
2801 gst_query_unref (query);
2805 * Read AVI headers when streaming
2807 static GstFlowReturn
2808 gst_avi_demux_stream_header_push (GstAviDemux * avi)
2810 GstFlowReturn ret = GST_FLOW_OK;
2815 GstBuffer *buf = NULL, *sub = NULL;
2819 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
2821 switch (avi->header_state) {
2822 case GST_AVI_DEMUX_HEADER_TAG_LIST:
2823 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
2824 avi->offset += 8 + GST_ROUND_UP_2 (size);
2825 if (tag != GST_RIFF_TAG_LIST)
2826 goto header_no_list;
2828 gst_adapter_flush (avi->adapter, 8);
2829 /* Find the 'hdrl' LIST tag */
2830 GST_DEBUG ("Reading %d bytes", size);
2831 buf = gst_adapter_take_buffer (avi->adapter, size);
2833 if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
2834 goto header_no_hdrl;
2838 gst_adapter_flush (avi->adapter, 1);
2840 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
2842 /* the hdrl starts with a 'avih' header */
2843 if (!gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag, &sub))
2844 goto header_no_avih;
2846 if (tag != GST_RIFF_TAG_avih)
2847 goto header_no_avih;
2849 if (!gst_avi_demux_parse_avih (GST_ELEMENT (avi), sub, &avi->avih))
2850 goto header_wrong_avih;
2852 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
2854 /* now, read the elements from the header until the end */
2855 while (gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag,
2857 /* sub can be NULL on empty tags */
2862 case GST_RIFF_TAG_LIST:
2863 if (GST_BUFFER_SIZE (sub) < 4)
2866 switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
2867 case GST_RIFF_LIST_strl:
2868 if (!(gst_avi_demux_parse_stream (avi, sub))) {
2870 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
2871 ("failed to parse stream, ignoring"));
2876 case GST_RIFF_LIST_odml:
2877 gst_avi_demux_parse_odml (avi, sub);
2881 GST_WARNING_OBJECT (avi,
2882 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
2883 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
2886 case GST_RIFF_TAG_JUNK:
2891 GST_WARNING_OBJECT (avi,
2892 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
2893 offset, GST_FOURCC_ARGS (tag));
2895 case GST_RIFF_TAG_JUNK:
2897 /* move to next chunk */
2899 gst_buffer_unref (sub);
2904 gst_buffer_unref (buf);
2905 GST_DEBUG ("elements parsed");
2907 /* check parsed streams */
2908 if (avi->num_streams == 0) {
2910 } else if (avi->num_streams != avi->avih->streams) {
2911 GST_WARNING_OBJECT (avi,
2912 "Stream header mentioned %d streams, but %d available",
2913 avi->avih->streams, avi->num_streams);
2915 GST_DEBUG ("Get junk and info next");
2916 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
2918 /* Need more data */
2922 case GST_AVI_DEMUX_HEADER_INFO:
2923 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
2925 if (gst_adapter_available (avi->adapter) < 12)
2928 data = gst_adapter_peek (avi->adapter, 12);
2929 tag = GST_READ_UINT32_LE (data);
2930 size = GST_READ_UINT32_LE (data + 4);
2931 ltag = GST_READ_UINT32_LE (data + 8);
2933 if (tag == GST_RIFF_TAG_LIST) {
2935 case GST_RIFF_LIST_movi:
2936 gst_adapter_flush (avi->adapter, 12);
2939 case GST_RIFF_LIST_INFO:
2940 GST_DEBUG ("Found INFO chunk");
2941 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
2942 GST_DEBUG ("got size %d", size);
2944 gst_adapter_flush (avi->adapter, 12);
2946 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
2949 gst_adapter_flush (avi->adapter, 1);
2950 gst_riff_parse_info (GST_ELEMENT (avi), buf,
2952 gst_buffer_unref (buf);
2954 avi->offset += GST_ROUND_UP_2 (size) - 4;
2956 GST_DEBUG ("skipping INFO LIST prefix");
2959 /* Need more data */
2964 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
2965 avi->offset += 8 + GST_ROUND_UP_2 (size);
2966 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
2967 // ??? goto iterate; ???
2969 /* Need more data */
2975 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
2976 avi->offset += 8 + GST_ROUND_UP_2 (size);
2977 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
2980 /* Need more data */
2987 GST_WARNING ("unhandled header state: %d", avi->header_state);
2992 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
2993 avi->num_streams, avi->stream[0].indexes);
2995 GST_DEBUG ("Found movi chunk. Starting to stream data");
2996 avi->state = GST_AVI_DEMUX_MOVI;
2998 /* no indexes in push mode, but it still sets some variables */
2999 gst_avi_demux_calculate_durations_from_index (avi);
3001 gst_avi_demux_expose_streams (avi, TRUE);
3003 /* create initial NEWSEGMENT event */
3004 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3005 stop = avi->segment.duration;
3007 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3009 if (avi->seek_event)
3010 gst_event_unref (avi->seek_event);
3011 avi->seek_event = gst_event_new_new_segment
3012 (FALSE, avi->segment.rate, GST_FORMAT_TIME,
3013 avi->segment.start, stop, avi->segment.time);
3015 gst_avi_demux_check_seekability (avi);
3017 /* at this point we know all the streams and we can signal the no more
3019 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3020 gst_element_no_more_pads (GST_ELEMENT (avi));
3027 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3028 return GST_FLOW_ERROR;
3032 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3033 ("Invalid AVI header (no LIST at start): %"
3034 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3035 return GST_FLOW_ERROR;
3039 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3040 ("Invalid AVI header (no hdrl at start): %"
3041 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3042 gst_buffer_unref (buf);
3043 return GST_FLOW_ERROR;
3047 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3048 ("Invalid AVI header (no avih at start): %"
3049 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3051 gst_buffer_unref (sub);
3053 gst_buffer_unref (buf);
3054 return GST_FLOW_ERROR;
3058 gst_buffer_unref (buf);
3059 return GST_FLOW_ERROR;
3064 * Read full AVI headers.
3066 static GstFlowReturn
3067 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3070 GstBuffer *buf, *sub = NULL;
3074 GstElement *element = GST_ELEMENT_CAST (avi);
3077 stamp = gst_util_get_timestamp ();
3079 /* the header consists of a 'hdrl' LIST tag */
3080 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3081 if (res != GST_FLOW_OK)
3082 goto pull_range_failed;
3083 else if (tag != GST_RIFF_TAG_LIST)
3085 else if (GST_BUFFER_SIZE (buf) < 4)
3088 GST_DEBUG_OBJECT (avi, "parsing headers");
3090 /* Find the 'hdrl' LIST tag */
3091 while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
3092 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3093 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
3096 gst_buffer_unref (buf);
3098 /* read new chunk */
3099 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3100 if (res != GST_FLOW_OK)
3101 goto pull_range_failed;
3102 else if (tag != GST_RIFF_TAG_LIST)
3104 else if (GST_BUFFER_SIZE (buf) < 4)
3108 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3110 /* the hdrl starts with a 'avih' header */
3111 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3113 else if (tag != GST_RIFF_TAG_avih)
3115 else if (!gst_avi_demux_parse_avih (element, sub, &avi->avih))
3118 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3120 /* now, read the elements from the header until the end */
3121 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3122 /* sub can be NULL on empty tags */
3127 case GST_RIFF_TAG_LIST:
3132 if (GST_BUFFER_SIZE (sub) < 4)
3135 data = GST_BUFFER_DATA (sub);
3136 fourcc = GST_READ_UINT32_LE (data);
3139 case GST_RIFF_LIST_strl:
3140 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3141 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3142 ("failed to parse stream, ignoring"));
3147 case GST_RIFF_LIST_odml:
3148 gst_avi_demux_parse_odml (avi, sub);
3151 case GST_RIFF_LIST_INFO:
3152 GST_BUFFER_DATA (sub) = data + 4;
3153 GST_BUFFER_SIZE (sub) -= 4;
3154 gst_riff_parse_info (element, sub, &avi->globaltags);
3157 GST_WARNING_OBJECT (avi,
3158 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3159 GST_FOURCC_ARGS (fourcc));
3160 GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
3161 GST_BUFFER_SIZE (sub));
3163 case GST_RIFF_TAG_JUNK:
3169 GST_WARNING_OBJECT (avi,
3170 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3171 GST_FOURCC_ARGS (tag), offset);
3172 GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
3173 GST_BUFFER_SIZE (sub));
3175 case GST_RIFF_TAG_JUNK:
3178 gst_buffer_unref (sub);
3183 gst_buffer_unref (buf);
3184 GST_DEBUG ("elements parsed");
3186 /* check parsed streams */
3187 if (avi->num_streams == 0)
3189 else if (avi->num_streams != avi->avih->streams) {
3190 GST_WARNING_OBJECT (avi,
3191 "Stream header mentioned %d streams, but %d available",
3192 avi->avih->streams, avi->num_streams);
3195 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3196 G_GUINT64_FORMAT, avi->offset);
3198 /* Now, find the data (i.e. skip all junk between header and data) */
3204 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3205 if (res != GST_FLOW_OK) {
3206 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3207 goto pull_range_failed;
3208 } else if (GST_BUFFER_SIZE (buf) < 12) {
3209 GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
3210 GST_BUFFER_SIZE (buf));
3211 gst_buffer_unref (buf);
3212 return GST_FLOW_ERROR;
3215 data = GST_BUFFER_DATA (buf);
3217 tag = GST_READ_UINT32_LE (data);
3218 size = GST_READ_UINT32_LE (data + 4);
3219 ltag = GST_READ_UINT32_LE (data + 8);
3221 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3222 GST_FOURCC_ARGS (tag), size);
3223 GST_MEMDUMP ("Tag content", data, GST_BUFFER_SIZE (buf));
3224 gst_buffer_unref (buf);
3227 case GST_RIFF_TAG_LIST:{
3229 case GST_RIFF_LIST_movi:
3230 GST_DEBUG_OBJECT (avi,
3231 "Reached the 'movi' tag, we're done with skipping");
3233 case GST_RIFF_LIST_INFO:
3235 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3237 if (res != GST_FLOW_OK) {
3238 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3239 goto pull_range_failed;
3241 GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
3243 GST_DEBUG ("skipping INFO LIST prefix");
3244 avi->offset += (4 - GST_ROUND_UP_2 (size));
3245 gst_buffer_unref (buf);
3249 sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
3250 gst_riff_parse_info (element, sub, &avi->globaltags);
3252 gst_buffer_unref (sub);
3255 gst_buffer_unref (buf);
3256 /* gst_riff_read_chunk() has already advanced avi->offset */
3259 GST_WARNING_OBJECT (avi,
3260 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3261 GST_FOURCC_ARGS (ltag));
3262 avi->offset += 8 + GST_ROUND_UP_2 (size);
3268 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3269 GST_FOURCC_ARGS (tag));
3271 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3272 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3273 avi->offset += 8 + GST_ROUND_UP_2 (size);
3279 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3280 avi->num_streams, avi->stream[0].indexes);
3282 /* create or read stream index (for seeking) */
3283 if (avi->stream[0].indexes != NULL) {
3284 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3285 gst_avi_demux_read_subindexes_pull (avi);
3287 if (!avi->have_index) {
3288 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
3289 gst_avi_demux_stream_index (avi);
3291 /* still no index, scan */
3292 if (!avi->have_index) {
3293 gst_avi_demux_stream_scan (avi);
3295 /* still no index.. this is a fatal error for now.
3296 * FIXME, we should switch to plain push mode without seeking
3297 * instead of failing. */
3298 if (!avi->have_index)
3302 /* use the indexes now to construct nice durations */
3303 gst_avi_demux_calculate_durations_from_index (avi);
3305 gst_avi_demux_expose_streams (avi, FALSE);
3307 /* create initial NEWSEGMENT event */
3308 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3309 stop = avi->segment.duration;
3311 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3313 /* do initial seek to the default segment values */
3314 gst_avi_demux_do_seek (avi, &avi->segment);
3315 /* prepare initial segment */
3316 if (avi->seek_event)
3317 gst_event_unref (avi->seek_event);
3318 avi->seek_event = gst_event_new_new_segment
3319 (FALSE, avi->segment.rate, GST_FORMAT_TIME,
3320 avi->segment.start, stop, avi->segment.time);
3322 stamp = gst_util_get_timestamp () - stamp;
3323 GST_DEBUG_OBJECT (avi, "pulling header %" GST_TIME_FORMAT,
3324 GST_TIME_ARGS (stamp));
3326 /* at this point we know all the streams and we can signal the no more
3328 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3329 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3336 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3337 ("Invalid AVI header (no LIST at start): %"
3338 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3339 gst_buffer_unref (buf);
3340 return GST_FLOW_ERROR;
3344 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3345 ("Invalid AVI header (no hdrl at start): %"
3346 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3347 gst_buffer_unref (buf);
3348 return GST_FLOW_ERROR;
3352 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3353 ("Invalid AVI header (no avih at start): %"
3354 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3356 gst_buffer_unref (sub);
3357 gst_buffer_unref (buf);
3358 return GST_FLOW_ERROR;
3362 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3363 ("Invalid AVI header (cannot parse avih at start)"));
3364 gst_buffer_unref (buf);
3365 return GST_FLOW_ERROR;
3369 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3370 return GST_FLOW_ERROR;
3374 GST_WARNING ("file without or too big index");
3375 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3376 ("Could not get/create index"));
3377 return GST_FLOW_ERROR;
3381 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3382 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3383 return GST_FLOW_ERROR;
3387 /* move a stream to @index */
3389 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
3390 GstSegment * segment, guint index)
3392 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
3394 if (segment->rate < 0.0) {
3396 /* Because we don't know the frame order we need to push from the prev keyframe
3397 * to the next keyframe. If there is a smart decoder downstream he will notice
3398 * that there are too many encoded frames send and return UNEXPECTED when there
3399 * are enough decoded frames to fill the segment. */
3400 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
3402 /* FIXME, we go back to 0, we should look at segment.start. We will however
3403 * stop earlier when the see the timestamp < segment.start */
3404 stream->start_entry = 0;
3405 stream->step_entry = index;
3406 stream->current_entry = index;
3407 stream->stop_entry = next_key;
3409 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
3410 stream->start_entry, stream->step_entry, stream->stop_entry);
3412 stream->start_entry = index;
3413 stream->step_entry = index;
3414 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
3416 if (stream->current_entry != index) {
3417 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
3418 stream->current_entry, index);
3419 stream->current_entry = index;
3420 stream->discont = TRUE;
3423 /* update the buffer info */
3424 gst_avi_demux_get_buffer_info (avi, stream, index,
3425 &stream->current_timestamp, &stream->current_ts_end,
3426 &stream->current_offset, &stream->current_offset_end);
3428 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
3429 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3430 ", off_end %" G_GUINT64_FORMAT, index,
3431 GST_TIME_ARGS (stream->current_timestamp),
3432 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3433 stream->current_offset_end);
3437 * Do the actual seeking.
3440 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3442 GstClockTime seek_time;
3445 GstAviStream *stream;
3447 seek_time = segment->last_stop;
3448 keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3450 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
3451 " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
3453 /* FIXME, this code assumes the main stream with keyframes is stream 0,
3454 * which is mostly correct... */
3455 stream = &avi->stream[avi->main_stream];
3457 /* get the entry index for the requested position */
3458 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
3459 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
3461 /* check if we are already on a keyframe */
3462 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
3463 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
3464 /* now go to the previous keyframe, this is where we should start
3466 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
3467 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
3470 /* move the main stream to this position */
3471 gst_avi_demux_move_stream (avi, stream, segment, index);
3474 /* when seeking to a keyframe, we update the result seek time
3475 * to the time of the keyframe. */
3476 seek_time = stream->current_timestamp;
3477 GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
3478 GST_TIME_ARGS (seek_time));
3481 /* the seek time is also the last_stop and stream time when going
3483 segment->last_stop = seek_time;
3484 if (segment->rate > 0.0)
3485 segment->time = seek_time;
3487 /* now set DISCONT and align the other streams */
3488 for (i = 0; i < avi->num_streams; i++) {
3489 GstAviStream *ostream;
3491 ostream = &avi->stream[i];
3492 if ((ostream == stream) || (ostream->index == NULL))
3495 /* get the entry index for the requested position */
3496 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
3498 /* move to previous keyframe */
3499 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
3500 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
3502 gst_avi_demux_move_stream (avi, ostream, segment, index);
3504 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
3505 GST_TIME_ARGS (seek_time));
3511 * Handle seek event.
3514 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
3519 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
3523 GstSegment seeksegment = { 0, };
3527 GST_DEBUG_OBJECT (avi, "doing seek with event");
3529 gst_event_parse_seek (event, &rate, &format, &flags,
3530 &cur_type, &cur, &stop_type, &stop);
3532 /* we have to have a format as the segment format. Try to convert
3534 if (format != GST_FORMAT_TIME) {
3535 GstFormat fmt = GST_FORMAT_TIME;
3536 gboolean res = TRUE;
3538 if (cur_type != GST_SEEK_TYPE_NONE)
3539 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
3540 if (res && stop_type != GST_SEEK_TYPE_NONE)
3541 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
3547 GST_DEBUG_OBJECT (avi,
3548 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
3549 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
3550 /* FIXME: can we do anything with rate!=1.0 */
3552 GST_DEBUG_OBJECT (avi, "doing seek without event");
3557 /* save flush flag */
3558 flush = flags & GST_SEEK_FLAG_FLUSH;
3561 GstEvent *fevent = gst_event_new_flush_start ();
3563 /* for a flushing seek, we send a flush_start on all pads. This will
3564 * eventually stop streaming with a WRONG_STATE. We can thus eventually
3565 * take the STREAM_LOCK. */
3566 GST_DEBUG_OBJECT (avi, "sending flush start");
3567 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
3568 gst_pad_push_event (avi->sinkpad, fevent);
3570 /* a non-flushing seek, we PAUSE the task so that we can take the
3572 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
3573 gst_pad_pause_task (avi->sinkpad);
3576 /* wait for streaming to stop */
3577 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
3578 GST_PAD_STREAM_LOCK (avi->sinkpad);
3580 /* copy segment, we need this because we still need the old
3581 * segment when we close the current segment. */
3582 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
3585 GST_DEBUG_OBJECT (avi, "configuring seek");
3586 gst_segment_set_seek (&seeksegment, rate, format, flags,
3587 cur_type, cur, stop_type, stop, &update);
3589 /* do the seek, seeksegment.last_stop contains the new position, this
3590 * actually never fails. */
3591 gst_avi_demux_do_seek (avi, &seeksegment);
3594 GstEvent *fevent = gst_event_new_flush_stop ();
3596 GST_DEBUG_OBJECT (avi, "sending flush stop");
3597 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
3598 gst_pad_push_event (avi->sinkpad, fevent);
3600 /* reset the last flow and mark discont, FLUSH is always DISCONT */
3601 for (i = 0; i < avi->num_streams; i++) {
3602 avi->stream[i].last_flow = GST_FLOW_OK;
3603 avi->stream[i].discont = TRUE;
3605 } else if (avi->segment_running) {
3608 /* we are running the current segment and doing a non-flushing seek,
3609 * close the segment first based on the last_stop. */
3610 GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
3611 " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
3612 seg = gst_event_new_new_segment (TRUE,
3613 avi->segment.rate, avi->segment.format,
3614 avi->segment.start, avi->segment.last_stop, avi->segment.time);
3615 gst_avi_demux_push_event (avi, seg);
3618 /* now update the real segment info */
3619 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
3621 /* post the SEGMENT_START message when we do segmented playback */
3622 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
3623 gst_element_post_message (GST_ELEMENT (avi),
3624 gst_message_new_segment_start (GST_OBJECT (avi),
3625 avi->segment.format, avi->segment.last_stop));
3628 /* prepare for streaming again */
3629 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3630 stop = avi->segment.duration;
3632 /* queue the segment event for the streaming thread. */
3633 if (avi->seek_event)
3634 gst_event_unref (avi->seek_event);
3635 if (avi->segment.rate > 0.0) {
3636 /* forwards goes from last_stop to stop */
3637 avi->seek_event = gst_event_new_new_segment (FALSE,
3638 avi->segment.rate, avi->segment.format,
3639 avi->segment.last_stop, stop, avi->segment.time);
3641 /* reverse goes from start to last_stop */
3642 avi->seek_event = gst_event_new_new_segment (FALSE,
3643 avi->segment.rate, avi->segment.format,
3644 avi->segment.start, avi->segment.last_stop, avi->segment.time);
3647 if (!avi->streaming) {
3648 avi->segment_running = TRUE;
3649 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
3652 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
3659 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
3665 gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
3671 GstSeekType cur_type, stop_type;
3676 GstIndexEntry *entry;
3678 GST_DEBUG_OBJECT (avi, "doing push-based seek");
3680 gst_event_parse_seek (event, &rate, &format, &flags,
3681 &cur_type, &cur, &stop_type, &stop);
3683 if (stop_type != GST_SEEK_TYPE_NONE)
3684 goto unsupported_seek;
3687 /* only forward streaming and seeking is possible */
3689 goto unsupported_seek;
3692 if (format != GST_FORMAT_TIME)
3693 goto unsupported_format;
3695 /* not really advisable otherwise */
3696 if ((flags & GST_SEEK_FLAG_FLUSH) == 0)
3697 goto unsupported_seek;
3699 /* should have index, let's check anyway */
3700 if (!avi->element_index)
3703 /* find reasonable corresponding BYTE position
3704 * note that we have no keyframe info in push mode whatsoever,
3705 * so we can not cater for related stuff in any way */
3707 /* some slack aiming for a keyframe */
3708 if (cur < GST_AVI_SEEK_PUSH_DISPLACE)
3711 cur -= GST_AVI_SEEK_PUSH_DISPLACE;
3713 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
3714 GST_INDEX_LOOKUP_BEFORE, GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_TIME, cur);
3719 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &byte_cur);
3720 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time);
3722 GST_DEBUG_OBJECT (avi, "found index entry for %" GST_TIME_FORMAT
3723 " at %" GST_TIME_FORMAT ", located at offset %" G_GINT64_FORMAT,
3724 GST_TIME_ARGS (cur), GST_TIME_ARGS (time), byte_cur);
3726 /* adjust offset to be in each stream's region */
3727 byte_cur = gst_avi_demux_seek_streams (avi, byte_cur, TRUE);
3729 /* let's not try push seeking if target and entry are too far apart */
3730 if (cur - time > 30 * GST_SECOND)
3733 GST_DEBUG_OBJECT (avi, "Pushing BYTE seek rate %g, "
3734 "start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, rate, byte_cur,
3736 /* BYTE seek event */
3737 event = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, cur_type, byte_cur,
3739 res = gst_pad_push_event (avi->sinkpad, event);
3746 GST_DEBUG_OBJECT (avi, "could not determine byte position to seek to, "
3752 GST_DEBUG_OBJECT (avi, "unsupported seek, seek aborted.");
3757 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
3763 * Helper for gst_avi_demux_invert()
3766 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
3768 memcpy (tmp, d1, bytes);
3769 memcpy (d1, d2, bytes);
3770 memcpy (d2, tmp, bytes);
3774 #define gst_avi_demux_is_uncompressed(fourcc) \
3775 (fourcc == GST_RIFF_DIB || \
3776 fourcc == GST_RIFF_rgb || \
3777 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
3780 * Invert DIB buffers... Takes existing buffer and
3781 * returns either the buffer or a new one (with old
3782 * one dereferenced).
3783 * FIXME: can't we preallocate tmp? and remember stride, bpp?
3786 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
3793 if (stream->strh->type != GST_RIFF_FCC_vids)
3796 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
3797 return buf; /* Ignore non DIB buffers */
3800 s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
3801 if (!gst_structure_get_int (s, "bpp", &bpp)) {
3802 GST_WARNING ("Failed to retrieve depth from caps");
3806 if (stream->strf.vids == NULL) {
3807 GST_WARNING ("Failed to retrieve vids for stream");
3811 h = stream->strf.vids->height;
3812 w = stream->strf.vids->width;
3813 stride = w * (bpp / 8);
3815 buf = gst_buffer_make_writable (buf);
3816 if (GST_BUFFER_SIZE (buf) < (stride * h)) {
3817 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
3821 tmp = g_malloc (stride);
3823 for (y = 0; y < h / 2; y++) {
3824 swap_line (GST_BUFFER_DATA (buf) + stride * y,
3825 GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
3834 gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
3835 GstClockTime timestamp, guint64 offset, gboolean keyframe)
3837 /* do not add indefinitely for open-ended streaming */
3838 if (G_UNLIKELY (avi->element_index && avi->seekable)) {
3839 GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
3840 G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
3841 gst_index_add_association (avi->element_index, avi->index_id,
3842 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT : GST_ASSOCIATION_FLAG_NONE,
3843 GST_FORMAT_TIME, timestamp, GST_FORMAT_BYTES, offset, NULL);
3844 /* well, current_total determines TIME and entry DEFAULT (frame #) ... */
3845 gst_index_add_association (avi->element_index, stream->index_id,
3846 GST_ASSOCIATION_FLAG_NONE,
3847 GST_FORMAT_TIME, stream->current_total, GST_FORMAT_BYTES, offset,
3848 GST_FORMAT_DEFAULT, stream->current_entry, NULL);
3853 * Returns the aggregated GstFlowReturn.
3855 static GstFlowReturn
3856 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
3860 gboolean unexpected = FALSE, not_linked = TRUE;
3862 /* store the value */
3863 stream->last_flow = ret;
3865 /* any other error that is not-linked or eos can be returned right away */
3866 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
3869 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
3870 for (i = 0; i < avi->num_streams; i++) {
3871 GstAviStream *ostream = &avi->stream[i];
3873 ret = ostream->last_flow;
3874 /* no unexpected or unlinked, return */
3875 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
3878 /* we check to see if we have at least 1 unexpected or all unlinked */
3879 unexpected |= (ret == GST_FLOW_UNEXPECTED);
3880 not_linked &= (ret == GST_FLOW_NOT_LINKED);
3882 /* when we get here, we all have unlinked or unexpected */
3884 ret = GST_FLOW_NOT_LINKED;
3885 else if (unexpected)
3886 ret = GST_FLOW_UNEXPECTED;
3888 GST_LOG_OBJECT (avi, "combined %s to return %s",
3889 gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret));
3893 /* move @stream to the next position in its index */
3894 static GstFlowReturn
3895 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
3898 guint old_entry, new_entry;
3900 old_entry = stream->current_entry;
3902 new_entry = old_entry + 1;
3904 /* see if we reached the end */
3905 if (new_entry >= stream->stop_entry) {
3906 if (avi->segment.rate < 0.0) {
3907 if (stream->step_entry == stream->start_entry) {
3908 /* we stepped all the way to the start, eos */
3909 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
3912 /* backwards, stop becomes step, find a new step */
3913 stream->stop_entry = stream->step_entry;
3914 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
3915 stream->stop_entry, TRUE);
3917 GST_DEBUG_OBJECT (avi,
3918 "reverse playback jump: start %u, step %u, stop %u",
3919 stream->start_entry, stream->step_entry, stream->stop_entry);
3921 /* and start from the previous keyframe now */
3922 new_entry = stream->step_entry;
3925 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
3930 if (new_entry != old_entry) {
3931 stream->current_entry = new_entry;
3932 stream->current_total = stream->index[new_entry].total;
3934 if (new_entry == old_entry + 1) {
3935 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
3936 old_entry, new_entry);
3937 /* we simply moved one step forwards, reuse current info */
3938 stream->current_timestamp = stream->current_ts_end;
3939 stream->current_offset = stream->current_offset_end;
3940 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
3941 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
3943 /* we moved DISCONT, full update */
3944 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
3945 &stream->current_timestamp, &stream->current_ts_end,
3946 &stream->current_offset, &stream->current_offset_end);
3947 /* and MARK discont for this stream */
3948 stream->last_flow = GST_FLOW_OK;
3949 stream->discont = TRUE;
3950 GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
3951 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3952 ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
3953 GST_TIME_ARGS (stream->current_timestamp),
3954 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3955 stream->current_offset_end);
3963 GST_DEBUG_OBJECT (avi, "we are EOS");
3964 /* setting current_timestamp to -1 marks EOS */
3965 stream->current_timestamp = -1;
3966 return GST_FLOW_UNEXPECTED;
3970 /* find the stream with the lowest current position when going forwards or with
3971 * the highest position when going backwards, this is the stream
3972 * we should push from next */
3974 gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
3976 guint64 min_time, max_time;
3977 guint stream_num, i;
3980 min_time = G_MAXUINT64;
3983 for (i = 0; i < avi->num_streams; i++) {
3985 GstAviStream *stream;
3987 stream = &avi->stream[i];
3988 position = stream->current_timestamp;
3990 /* position of -1 is EOS */
3991 if (position != -1) {
3992 if (rate > 0.0 && position < min_time) {
3993 min_time = position;
3995 } else if (rate < 0.0 && position >= max_time) {
3996 max_time = position;
4004 static GstFlowReturn
4005 gst_avi_demux_loop_data (GstAviDemux * avi)
4007 GstFlowReturn ret = GST_FLOW_OK;
4009 GstAviStream *stream;
4010 gboolean processed = FALSE;
4012 guint64 offset, size;
4013 GstClockTime timestamp, duration;
4014 guint64 out_offset, out_offset_end;
4016 GstAviIndexEntry *entry;
4019 stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
4022 if (G_UNLIKELY (stream_num == -1)) {
4023 GST_DEBUG_OBJECT (avi, "all streams are EOS");
4027 /* we have the stream now */
4028 stream = &avi->stream[stream_num];
4030 /* skip streams without pads */
4032 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
4037 /* get the timing info for the entry */
4038 timestamp = stream->current_timestamp;
4039 duration = stream->current_ts_end - timestamp;
4040 out_offset = stream->current_offset;
4041 out_offset_end = stream->current_offset_end;
4043 /* get the entry data info */
4044 entry = &stream->index[stream->current_entry];
4045 offset = entry->offset;
4047 keyframe = ENTRY_IS_KEYFRAME (entry);
4049 /* skip empty entries */
4051 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
4052 stream->current_entry, size, stream->pad);
4056 if (avi->segment.rate > 0.0) {
4057 /* only check this for fowards playback for now */
4058 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4059 && (timestamp > avi->segment.stop)) {
4064 GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
4065 G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
4066 stream_num, offset, offset, keyframe);
4068 /* FIXME, check large chunks and cut them up */
4070 /* pull in the data */
4071 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
4072 if (ret != GST_FLOW_OK)
4075 /* check for short buffers, this is EOS as well */
4076 if (GST_BUFFER_SIZE (buf) < size)
4079 /* invert the picture if needed */
4080 buf = gst_avi_demux_invert (stream, buf);
4082 /* mark non-keyframes */
4084 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4086 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4088 GST_BUFFER_TIMESTAMP (buf) = timestamp;
4089 GST_BUFFER_DURATION (buf) = duration;
4090 GST_BUFFER_OFFSET (buf) = out_offset;
4091 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
4093 /* mark discont when pending */
4094 if (stream->discont) {
4095 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4096 stream->discont = FALSE;
4099 gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
4101 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4103 /* update current position in the segment */
4104 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, timestamp);
4106 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %u, ts %"
4107 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4108 ", off_end %" G_GUINT64_FORMAT,
4109 GST_BUFFER_SIZE (buf), GST_TIME_ARGS (timestamp),
4110 GST_TIME_ARGS (duration), out_offset, out_offset_end);
4112 ret = gst_pad_push (stream->pad, buf);
4114 /* mark as processed, we increment the frame and byte counters then
4115 * leave the while loop and return the GstFlowReturn */
4118 if (avi->segment.rate < 0) {
4119 if (timestamp > avi->segment.stop && ret == GST_FLOW_UNEXPECTED) {
4120 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4121 * we are at the end of the segment, so we just need to jump
4122 * back to the previous section. */
4123 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4128 /* move to next item */
4129 ret = gst_avi_demux_advance (avi, stream, ret);
4132 ret = gst_avi_demux_combine_flows (avi, stream, ret);
4133 } while (!processed);
4141 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
4142 ret = GST_FLOW_UNEXPECTED;
4147 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4148 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4149 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
4150 ret = GST_FLOW_UNEXPECTED;
4155 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
4156 " size=%" G_GUINT64_FORMAT, offset, size);
4161 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4162 ", only got %d/%" G_GUINT64_FORMAT " bytes (truncated file?)", offset,
4163 GST_BUFFER_SIZE (buf), size);
4164 gst_buffer_unref (buf);
4165 ret = GST_FLOW_UNEXPECTED;
4171 * Read data. If we have an index it delegates to
4172 * gst_avi_demux_process_next_entry().
4174 static GstFlowReturn
4175 gst_avi_demux_stream_data (GstAviDemux * avi)
4180 GstFlowReturn res = GST_FLOW_OK;
4181 GstFormat format = GST_FORMAT_TIME;
4183 if (G_UNLIKELY (avi->have_eos)) {
4184 /* Clean adapter, we're done */
4185 gst_adapter_clear (avi->adapter);
4186 return GST_FLOW_UNEXPECTED;
4189 if (G_UNLIKELY (avi->todrop)) {
4192 if ((drop = gst_adapter_available (avi->adapter))) {
4193 if (drop > avi->todrop)
4195 GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
4196 gst_adapter_flush (avi->adapter, drop);
4197 avi->todrop -= drop;
4198 avi->offset += drop;
4202 /* Iterate until need more data, so adapter won't grow too much */
4204 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4208 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4209 GST_FOURCC_ARGS (tag), size);
4211 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4212 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4213 GST_LOG ("Chunk ok");
4214 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4215 GST_DEBUG ("Found sub-index tag");
4216 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4217 /* accept 0 size buffer here */
4218 avi->abort_buffering = FALSE;
4219 GST_DEBUG (" skipping %d bytes for now", size);
4220 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4223 } else if (tag == GST_RIFF_TAG_idx1) {
4224 GST_DEBUG ("Found index tag, stream done");
4225 avi->have_eos = TRUE;
4226 return GST_FLOW_UNEXPECTED;
4227 } else if (tag == GST_RIFF_TAG_LIST) {
4228 /* movi chunks might be grouped in rec list */
4229 if (gst_adapter_available (avi->adapter) >= 12) {
4230 GST_DEBUG ("Found LIST tag, skipping LIST header");
4231 gst_adapter_flush (avi->adapter, 12);
4235 } else if (tag == GST_RIFF_TAG_JUNK) {
4236 /* rec list might contain JUNK chunks */
4237 GST_DEBUG ("Found JUNK tag");
4238 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4239 /* accept 0 size buffer here */
4240 avi->abort_buffering = FALSE;
4241 GST_DEBUG (" skipping %d bytes for now", size);
4242 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4246 GST_DEBUG ("No more stream chunks, send EOS");
4247 avi->have_eos = TRUE;
4248 return GST_FLOW_UNEXPECTED;
4251 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4252 /* supposedly one hopes to catch a nicer chunk later on ... */
4253 /* FIXME ?? give up here rather than possibly ending up going
4254 * through the whole file */
4255 if (avi->abort_buffering) {
4256 avi->abort_buffering = FALSE;
4257 gst_adapter_flush (avi->adapter, 8);
4261 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4262 GST_FOURCC_ARGS (tag), size);
4264 stream_nr = CHUNKID_TO_STREAMNR (tag);
4266 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4268 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4269 stream_nr, GST_FOURCC_ARGS (tag));
4270 avi->offset += 8 + GST_ROUND_UP_2 (size);
4271 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4273 GstAviStream *stream;
4274 GstClockTime next_ts = 0;
4278 gst_adapter_flush (avi->adapter, 8);
4281 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
4282 /* patch the size */
4283 GST_BUFFER_SIZE (buf) = size;
4284 offset = avi->offset;
4285 avi->offset += 8 + GST_ROUND_UP_2 (size);
4287 stream = &avi->stream[stream_nr];
4289 /* set delay (if any)
4290 if (stream->strh->init_frames == stream->current_frame &&
4292 stream->delay = next_ts;
4295 /* parsing of corresponding header may have failed */
4296 if (G_UNLIKELY (!stream->pad)) {
4297 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
4298 GST_FOURCC_ARGS (tag));
4299 gst_buffer_unref (buf);
4301 GstClockTime dur_ts = 0;
4303 /* get time of this buffer */
4304 gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
4305 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4308 gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
4310 /* increment our positions */
4311 stream->current_entry++;
4312 stream->current_total += size;
4314 /* invert the picture if needed */
4315 buf = gst_avi_demux_invert (stream, buf);
4317 gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
4318 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4321 GST_BUFFER_TIMESTAMP (buf) = next_ts;
4322 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
4323 if (stream->strh->type == GST_RIFF_FCC_vids) {
4324 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
4325 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
4327 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4328 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
4331 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4332 GST_DEBUG_OBJECT (avi,
4333 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
4334 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
4335 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
4336 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_BUFFER_OFFSET (buf),
4337 size, GST_PAD_NAME (stream->pad));
4339 /* update current position in the segment */
4340 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
4342 /* mark discont when pending */
4343 if (G_UNLIKELY (stream->discont)) {
4344 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4345 stream->discont = FALSE;
4347 res = gst_pad_push (stream->pad, buf);
4350 res = gst_avi_demux_combine_flows (avi, stream, res);
4351 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4352 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
4365 GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
4366 gst_format_get_name (format));
4367 res = GST_FLOW_ERROR;
4373 * Send pending tags.
4376 push_tag_lists (GstAviDemux * avi)
4384 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
4386 for (i = 0; i < avi->num_streams; i++) {
4387 GstAviStream *stream = &avi->stream[i];
4388 GstPad *pad = stream->pad;
4390 tags = stream->taglist;
4393 GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
4395 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (avi), pad, tags);
4396 stream->taglist = NULL;
4400 if (!(tags = avi->globaltags))
4401 tags = gst_tag_list_new ();
4403 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
4404 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
4406 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
4407 gst_element_found_tags (GST_ELEMENT_CAST (avi), tags);
4408 avi->globaltags = NULL;
4409 avi->got_tags = FALSE;
4413 gst_avi_demux_loop (GstPad * pad)
4416 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4418 switch (avi->state) {
4419 case GST_AVI_DEMUX_START:
4420 res = gst_avi_demux_stream_init_pull (avi);
4421 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4422 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4425 avi->state = GST_AVI_DEMUX_HEADER;
4427 case GST_AVI_DEMUX_HEADER:
4428 res = gst_avi_demux_stream_header_pull (avi);
4429 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4430 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4433 avi->state = GST_AVI_DEMUX_MOVI;
4435 case GST_AVI_DEMUX_MOVI:
4436 if (G_UNLIKELY (avi->seek_event)) {
4437 gst_avi_demux_push_event (avi, avi->seek_event);
4438 avi->seek_event = NULL;
4440 if (G_UNLIKELY (avi->got_tags)) {
4441 push_tag_lists (avi);
4443 /* process each index entry in turn */
4444 res = gst_avi_demux_loop_data (avi);
4446 /* pause when error */
4447 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4448 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
4453 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
4454 res = GST_FLOW_ERROR;
4462 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
4463 avi->segment_running = FALSE;
4464 gst_pad_pause_task (avi->sinkpad);
4466 if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
4467 gboolean push_eos = TRUE;
4469 if (res == GST_FLOW_UNEXPECTED) {
4470 /* handle end-of-stream/segment */
4471 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4474 if ((stop = avi->segment.stop) == -1)
4475 stop = avi->segment.duration;
4477 GST_INFO_OBJECT (avi, "sending segment_done");
4479 gst_element_post_message
4481 gst_message_new_segment_done (GST_OBJECT (avi), GST_FORMAT_TIME,
4486 /* for fatal errors we post an error message */
4487 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
4488 (_("Internal data stream error.")),
4489 ("streaming stopped, reason %s", gst_flow_get_name (res)));
4492 GST_INFO_OBJECT (avi, "sending eos");
4493 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
4494 (res == GST_FLOW_UNEXPECTED)) {
4495 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
4496 (NULL), ("got eos but no streams (yet)"));
4503 static GstFlowReturn
4504 gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
4507 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4509 GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
4510 gst_adapter_push (avi->adapter, buf);
4512 switch (avi->state) {
4513 case GST_AVI_DEMUX_START:
4514 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
4515 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4519 case GST_AVI_DEMUX_HEADER:
4520 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
4521 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4525 case GST_AVI_DEMUX_MOVI:
4526 if (G_UNLIKELY (avi->seek_event)) {
4527 gst_avi_demux_push_event (avi, avi->seek_event);
4528 avi->seek_event = NULL;
4530 if (G_UNLIKELY (avi->got_tags)) {
4531 push_tag_lists (avi);
4533 res = gst_avi_demux_stream_data (avi);
4536 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
4537 ("Illegal internal state"));
4538 res = GST_FLOW_ERROR;
4542 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
4543 gst_flow_get_name (res));
4545 if (G_UNLIKELY (avi->abort_buffering)) {
4546 avi->abort_buffering = FALSE;
4547 res = GST_FLOW_ERROR;
4548 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
4555 gst_avi_demux_sink_activate (GstPad * sinkpad)
4557 if (gst_pad_check_pull_range (sinkpad)) {
4558 GST_DEBUG ("going to pull mode");
4559 return gst_pad_activate_pull (sinkpad, TRUE);
4561 GST_DEBUG ("going to push (streaming) mode");
4562 return gst_pad_activate_push (sinkpad, TRUE);
4567 gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
4569 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
4572 avi->segment_running = TRUE;
4573 avi->streaming = FALSE;
4574 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4577 avi->segment_running = FALSE;
4578 return gst_pad_stop_task (sinkpad);
4583 gst_avi_demux_activate_push (GstPad * pad, gboolean active)
4585 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
4588 GST_DEBUG ("avi: activating push/chain function");
4589 avi->streaming = TRUE;
4591 /* create index for some push based seeking if not provided */
4592 GST_OBJECT_LOCK (avi);
4593 if (!avi->element_index) {
4594 GST_DEBUG_OBJECT (avi, "creating index");
4595 avi->element_index = gst_index_factory_make ("memindex");
4597 GST_OBJECT_UNLOCK (avi);
4598 /* object lock might be taken again */
4599 gst_index_get_writer_id (avi->element_index, GST_OBJECT (avi),
4603 GST_DEBUG ("avi: deactivating push/chain function");
4610 gst_avi_demux_set_index (GstElement * element, GstIndex * index)
4612 GstAviDemux *avi = GST_AVI_DEMUX (element);
4614 GST_OBJECT_LOCK (avi);
4615 if (avi->element_index)
4616 gst_object_unref (avi->element_index);
4618 avi->element_index = gst_object_ref (index);
4620 avi->element_index = NULL;
4622 GST_OBJECT_UNLOCK (avi);
4623 /* object lock might be taken again */
4625 gst_index_get_writer_id (index, GST_OBJECT (element), &avi->index_id);
4626 GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
4630 gst_avi_demux_get_index (GstElement * element)
4632 GstIndex *result = NULL;
4633 GstAviDemux *avi = GST_AVI_DEMUX (element);
4635 GST_OBJECT_LOCK (avi);
4636 if (avi->element_index)
4637 result = gst_object_ref (avi->element_index);
4638 GST_OBJECT_UNLOCK (avi);
4640 GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
4645 static GstStateChangeReturn
4646 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
4648 GstStateChangeReturn ret;
4649 GstAviDemux *avi = GST_AVI_DEMUX (element);
4651 switch (transition) {
4652 case GST_STATE_CHANGE_READY_TO_PAUSED:
4653 avi->streaming = FALSE;
4654 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
4660 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
4661 if (ret == GST_STATE_CHANGE_FAILURE)
4664 switch (transition) {
4665 case GST_STATE_CHANGE_PAUSED_TO_READY:
4666 gst_avi_demux_reset (avi);