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)
50 #include "gst/riff/riff-media.h"
51 #include "gstavidemux.h"
53 #include <gst/gst-i18n-plugin.h>
54 #include <gst/base/gstadapter.h>
57 #define DIV_ROUND_UP(s,v) (((s) + ((v)-1)) / (v))
59 GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
60 #define GST_CAT_DEFAULT avidemux_debug
62 static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
65 GST_STATIC_CAPS ("video/x-msvideo")
68 static void gst_avi_demux_base_init (GstAviDemuxClass * klass);
69 static void gst_avi_demux_class_init (GstAviDemuxClass * klass);
70 static void gst_avi_demux_init (GstAviDemux * avi);
71 static void gst_avi_demux_finalize (GObject * object);
73 static void gst_avi_demux_reset (GstAviDemux * avi);
76 static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
78 static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event);
79 static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
81 static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
84 static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
86 static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad);
87 static gboolean gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query);
88 static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
89 gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
91 static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
92 static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
94 static gboolean gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
96 static void gst_avi_demux_loop (GstPad * pad);
97 static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad);
98 static gboolean gst_avi_demux_sink_activate_pull (GstPad * sinkpad,
100 static gboolean gst_avi_demux_activate_push (GstPad * pad, gboolean active);
101 static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstBuffer * buf);
103 static void gst_avi_demux_set_index (GstElement * element, GstIndex * index);
104 static GstIndex *gst_avi_demux_get_index (GstElement * element);
105 static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
106 GstStateChange transition);
108 static void gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf);
110 static GstElementClass *parent_class = NULL;
112 /* GObject methods */
115 gst_avi_demux_get_type (void)
117 static GType avi_demux_type = 0;
119 if (!avi_demux_type) {
120 static const GTypeInfo avi_demux_info = {
121 sizeof (GstAviDemuxClass),
122 (GBaseInitFunc) gst_avi_demux_base_init,
124 (GClassInitFunc) gst_avi_demux_class_init,
127 sizeof (GstAviDemux),
129 (GInstanceInitFunc) gst_avi_demux_init,
133 g_type_register_static (GST_TYPE_ELEMENT,
134 "GstAviDemux", &avi_demux_info, 0);
137 return avi_demux_type;
141 gst_avi_demux_base_init (GstAviDemuxClass * klass)
143 static const GstElementDetails gst_avi_demux_details =
144 GST_ELEMENT_DETAILS ("Avi demuxer",
146 "Demultiplex an avi file into audio and video",
147 "Erik Walthinsen <omega@cse.ogi.edu>\n"
148 "Wim Taymans <wim.taymans@chello.be>\n"
149 "Thijs Vermeir <thijsvermeir@gmail.com>");
150 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
151 GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl;
152 GstCaps *audcaps, *vidcaps, *subcaps;
154 audcaps = gst_riff_create_audio_template_caps ();
155 gst_caps_append (audcaps, gst_caps_new_simple ("audio/x-avi-unknown", NULL));
156 audiosrctempl = gst_pad_template_new ("audio_%02d",
157 GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
159 vidcaps = gst_riff_create_video_template_caps ();
160 gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
161 gst_caps_append (vidcaps, gst_caps_new_simple ("video/x-avi-unknown", NULL));
162 videosrctempl = gst_pad_template_new ("video_%02d",
163 GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
165 subcaps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
166 subsrctempl = gst_pad_template_new ("subtitle_%02d",
167 GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
168 gst_element_class_add_pad_template (element_class, audiosrctempl);
169 gst_element_class_add_pad_template (element_class, videosrctempl);
170 gst_element_class_add_pad_template (element_class, subsrctempl);
171 gst_element_class_add_pad_template (element_class,
172 gst_static_pad_template_get (&sink_templ));
173 gst_element_class_set_details (element_class, &gst_avi_demux_details);
177 gst_avi_demux_class_init (GstAviDemuxClass * klass)
179 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
180 GObjectClass *gobject_class = (GObjectClass *) klass;
182 GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
183 0, "Demuxer for AVI streams");
185 parent_class = g_type_class_peek_parent (klass);
187 gobject_class->finalize = gst_avi_demux_finalize;
188 gstelement_class->change_state =
189 GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
191 gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_avi_demux_set_index);
192 gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_avi_demux_get_index);
196 gst_avi_demux_init (GstAviDemux * avi)
198 avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
199 gst_pad_set_activate_function (avi->sinkpad,
200 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
201 gst_pad_set_activatepull_function (avi->sinkpad,
202 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_pull));
203 gst_pad_set_activatepush_function (avi->sinkpad,
204 GST_DEBUG_FUNCPTR (gst_avi_demux_activate_push));
205 gst_pad_set_chain_function (avi->sinkpad,
206 GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
207 gst_pad_set_event_function (avi->sinkpad,
208 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
209 gst_element_add_pad (GST_ELEMENT_CAST (avi), avi->sinkpad);
211 avi->adapter = gst_adapter_new ();
213 gst_avi_demux_reset (avi);
217 gst_avi_demux_finalize (GObject * object)
219 GstAviDemux *avi = GST_AVI_DEMUX (object);
221 GST_DEBUG ("AVI: finalize");
223 g_object_unref (avi->adapter);
225 G_OBJECT_CLASS (parent_class)->finalize (object);
229 gst_avi_demux_reset_stream (GstAviDemux * avi, GstAviStream * stream)
231 g_free (stream->strh);
232 g_free (stream->strf.data);
233 g_free (stream->name);
234 g_free (stream->index);
235 g_free (stream->indexes);
236 if (stream->initdata)
237 gst_buffer_unref (stream->initdata);
238 if (stream->extradata)
239 gst_buffer_unref (stream->extradata);
241 if (stream->exposed) {
242 gst_pad_set_active (stream->pad, FALSE);
243 gst_element_remove_pad (GST_ELEMENT_CAST (avi), stream->pad);
245 gst_object_unref (stream->pad);
247 if (stream->taglist) {
248 gst_tag_list_free (stream->taglist);
249 stream->taglist = NULL;
251 memset (stream, 0, sizeof (GstAviStream));
255 gst_avi_demux_reset (GstAviDemux * avi)
259 GST_DEBUG ("AVI: reset");
261 for (i = 0; i < avi->num_streams; i++)
262 gst_avi_demux_reset_stream (avi, &avi->stream[i]);
264 avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
265 avi->num_streams = 0;
266 avi->num_v_streams = 0;
267 avi->num_a_streams = 0;
268 avi->num_t_streams = 0;
269 avi->main_stream = -1;
271 avi->state = GST_AVI_DEMUX_START;
274 avi->index_offset = 0;
278 if (avi->element_index)
279 gst_object_unref (avi->element_index);
280 avi->element_index = NULL;
282 if (avi->seg_event) {
283 gst_event_unref (avi->seg_event);
284 avi->seg_event = NULL;
288 gst_tag_list_free (avi->globaltags);
289 avi->globaltags = NULL;
291 avi->got_tags = TRUE; /* we always want to push global tags */
292 avi->have_eos = FALSE;
293 avi->seekable = TRUE;
295 gst_adapter_clear (avi->adapter);
297 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
301 /* GstElement methods */
304 static const GstFormat *
305 gst_avi_demux_get_src_formats (GstPad * pad)
307 GstAviStream *stream = gst_pad_get_element_private (pad);
309 static const GstFormat src_a_formats[] = {
315 static const GstFormat src_v_formats[] = {
321 return (stream->strh->type == GST_RIFF_FCC_auds ?
322 src_a_formats : src_v_formats);
326 /* assumes stream->strf.auds->av_bps != 0 */
327 static inline GstClockTime
328 avi_stream_convert_bytes_to_time_unchecked (GstAviStream * stream,
331 return gst_util_uint64_scale_int (bytes, GST_SECOND,
332 stream->strf.auds->av_bps);
335 static inline guint64
336 avi_stream_convert_time_to_bytes_unchecked (GstAviStream * stream,
339 return gst_util_uint64_scale_int (time, stream->strf.auds->av_bps,
343 /* assumes stream->strh->rate != 0 */
344 static inline GstClockTime
345 avi_stream_convert_frames_to_time_unchecked (GstAviStream * stream,
348 return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
352 static inline guint64
353 avi_stream_convert_time_to_frames_unchecked (GstAviStream * stream,
356 return gst_util_uint64_scale (time, stream->strh->rate,
357 stream->strh->scale * GST_SECOND);
361 gst_avi_demux_src_convert (GstPad * pad,
362 GstFormat src_format,
363 gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
365 GstAviStream *stream = gst_pad_get_element_private (pad);
369 "Received src_format:%s, src_value:%" G_GUINT64_FORMAT
370 ", dest_format:%s", gst_format_get_name (src_format), src_value,
371 gst_format_get_name (*dest_format));
373 if (G_UNLIKELY (src_format == *dest_format)) {
374 *dest_value = src_value;
377 if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
381 if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
382 (src_format == GST_FORMAT_BYTES
383 || *dest_format == GST_FORMAT_BYTES))) {
388 switch (src_format) {
389 case GST_FORMAT_TIME:
390 switch (*dest_format) {
391 case GST_FORMAT_BYTES:
392 *dest_value = gst_util_uint64_scale_int (src_value,
393 stream->strf.auds->av_bps, GST_SECOND);
395 case GST_FORMAT_DEFAULT:
397 gst_util_uint64_scale_round (src_value, stream->strh->rate,
398 stream->strh->scale * GST_SECOND);
405 case GST_FORMAT_BYTES:
406 switch (*dest_format) {
407 case GST_FORMAT_TIME:
408 if (stream->strf.auds->av_bps != 0) {
409 *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
419 case GST_FORMAT_DEFAULT:
420 switch (*dest_format) {
421 case GST_FORMAT_TIME:
423 avi_stream_convert_frames_to_time_unchecked (stream, src_value);
436 "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
437 gst_format_get_name (*dest_format), *dest_value);
441 static const GstQueryType *
442 gst_avi_demux_get_src_query_types (GstPad * pad)
444 static const GstQueryType src_types[] = {
456 gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query)
459 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
461 GstAviStream *stream = gst_pad_get_element_private (pad);
463 if (!stream->strh || !stream->strf.data)
464 return gst_pad_query_default (pad, query);
466 switch (GST_QUERY_TYPE (query)) {
467 case GST_QUERY_POSITION:{
470 GST_DEBUG ("pos query for stream %u: frames %u, bytes %u",
471 stream->num, stream->current_entry, stream->current_total);
473 /* FIXME, this looks clumsy */
474 if (stream->strh->type == GST_RIFF_FCC_auds) {
475 if (stream->is_vbr) {
477 pos = gst_util_uint64_scale ((gint64) stream->current_entry *
478 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
479 GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
480 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
481 } else if (stream->strf.auds->av_bps != 0) {
483 pos = gst_util_uint64_scale (stream->current_total, GST_SECOND,
484 (guint64) stream->strf.auds->av_bps);
485 GST_DEBUG_OBJECT (avi,
486 "CBR convert bytes %u, time %" GST_TIME_FORMAT,
487 stream->current_total, GST_TIME_ARGS (pos));
488 } else if (stream->idx_n != 0 && stream->total_bytes != 0) {
489 /* calculate timestamps based on percentage of length */
490 guint64 xlen = avi->avih->us_frame *
491 avi->avih->tot_frames * GST_USECOND;
493 if (stream->is_vbr) {
494 pos = gst_util_uint64_scale (xlen, stream->current_entry,
496 GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
497 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
499 pos = gst_util_uint64_scale (xlen, stream->current_total,
500 stream->total_bytes);
501 GST_DEBUG_OBJECT (avi,
502 "CBR perc convert bytes %u, time %" GST_TIME_FORMAT,
503 stream->current_total, GST_TIME_ARGS (pos));
510 if (stream->strh->rate != 0) {
511 pos = gst_util_uint64_scale ((guint64) stream->current_entry *
512 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
514 pos = stream->current_entry * avi->avih->us_frame * GST_USECOND;
518 GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
519 gst_query_set_position (query, GST_FORMAT_TIME, pos);
521 GST_WARNING ("pos query failed");
524 case GST_QUERY_DURATION:
527 GstClockTime duration;
529 /* only act on audio or video streams */
530 if (stream->strh->type != GST_RIFF_FCC_auds &&
531 stream->strh->type != GST_RIFF_FCC_vids) {
536 /* take stream duration, fall back to avih duration */
537 if ((duration = stream->duration) == -1)
538 duration = avi->duration;
540 gst_query_parse_duration (query, &fmt, NULL);
543 case GST_FORMAT_TIME:
544 gst_query_set_duration (query, fmt, duration);
546 case GST_FORMAT_DEFAULT:
549 GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
552 if (stream->idx_n >= 0)
553 gst_query_set_duration (query, fmt, stream->idx_n);
554 else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
555 duration, &fmt, &dur))
556 gst_query_set_duration (query, fmt, dur);
565 case GST_QUERY_SEEKING:{
568 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
569 if (fmt == GST_FORMAT_TIME) {
570 gboolean seekable = TRUE;
572 if (avi->streaming) {
573 seekable = avi->seekable;
576 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
577 0, stream->duration);
582 case GST_QUERY_CONVERT:{
583 GstFormat src_fmt, dest_fmt;
584 gint64 src_val, dest_val;
586 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
587 if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
589 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
591 res = gst_pad_query_default (pad, query);
595 res = gst_pad_query_default (pad, query);
599 gst_object_unref (avi);
604 static const GstEventMask *
605 gst_avi_demux_get_event_mask (GstPad * pad)
607 static const GstEventMask masks[] = {
608 {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
617 gst_avi_demux_seek_streams (GstAviDemux * avi, guint64 offset, gboolean before)
619 GstAviStream *stream;
620 GstIndexEntry *entry;
622 gint64 val, min = offset;
624 for (i = 0; i < avi->num_streams; i++) {
625 stream = &avi->stream[i];
627 entry = gst_index_get_assoc_entry (avi->element_index, stream->index_id,
628 before ? GST_INDEX_LOOKUP_BEFORE : GST_INDEX_LOOKUP_AFTER,
629 GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_BYTES, offset);
633 GST_DEBUG_OBJECT (avi, "stream %d, previous entry at %"
634 G_GUINT64_FORMAT, i, val);
635 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
643 GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i);
644 stream->current_entry = 0;
645 stream->current_total = 0;
649 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val);
650 GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT,
653 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &val);
654 stream->current_total = val;
655 gst_index_entry_assoc_map (entry, GST_FORMAT_DEFAULT, &val);
656 stream->current_entry = val;
662 #define GST_AVI_SEEK_PUSH_DISPLACE (4 * GST_SECOND)
665 gst_avi_demux_handle_sink_event (GstPad * pad, GstEvent * event)
668 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
670 GST_DEBUG_OBJECT (avi,
671 "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
673 switch (GST_EVENT_TYPE (event)) {
674 case GST_EVENT_NEWSEGMENT:
678 gint64 start, stop, time, offset = 0;
681 GstIndexEntry *entry;
683 /* some debug output */
684 gst_segment_init (&segment, GST_FORMAT_UNDEFINED);
685 gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
686 &start, &stop, &time);
687 gst_segment_set_newsegment_full (&segment, update, rate, arate, format,
689 GST_DEBUG_OBJECT (avi,
690 "received format %d newsegment %" GST_SEGMENT_FORMAT, format,
693 /* chain will send initial newsegment after pads have been added */
694 if (avi->state != GST_AVI_DEMUX_MOVI) {
695 GST_DEBUG_OBJECT (avi, "still starting, eating event");
699 /* we only expect a BYTE segment, e.g. following a seek */
700 if (format != GST_FORMAT_BYTES) {
701 GST_DEBUG_OBJECT (avi, "unsupported segment format, ignoring");
705 if (!avi->element_index) {
706 GST_WARNING_OBJECT (avi, "no index data, forcing EOS");
710 /* Let's check if we have an index entry for this position */
711 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
712 GST_INDEX_LOOKUP_AFTER, GST_ASSOCIATION_FLAG_NONE,
713 GST_FORMAT_BYTES, start);
715 /* we can not go where we have not yet been before ... */
717 GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS");
722 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time);
723 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &start);
724 stop = GST_CLOCK_TIME_NONE;
726 /* compensate for slack */
728 time += GST_AVI_SEEK_PUSH_DISPLACE;
730 /* set up segment and send downstream */
731 gst_segment_set_newsegment_full (&avi->segment, update, rate, arate,
732 GST_FORMAT_TIME, time, stop, time);
733 GST_DEBUG_OBJECT (avi, "Pushing newseg update %d, rate %g, "
734 "applied rate %g, format %d, start %" G_GINT64_FORMAT ", "
735 "stop %" G_GINT64_FORMAT, update, rate, arate, GST_FORMAT_TIME,
737 gst_avi_demux_push_event (avi,
738 gst_event_new_new_segment_full (update, rate, arate, GST_FORMAT_TIME,
741 GST_DEBUG_OBJECT (avi, "next chunk expected at %" G_GINT64_FORMAT, start);
743 /* adjust state for streaming thread accordingly */
744 avi->offset = offset;
745 gst_avi_demux_seek_streams (avi, offset, FALSE);
747 /* set up streaming thread */
748 avi->offset = offset;
749 avi->todrop = start - offset;
752 /* in any case, clear leftover in current segment, if any */
753 gst_adapter_clear (avi->adapter);
754 gst_event_unref (event);
759 avi->have_eos = TRUE;
764 if (avi->state != GST_AVI_DEMUX_MOVI) {
765 gst_event_unref (event);
766 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
767 (NULL), ("got eos and didn't receive a complete header object"));
768 } else if (!gst_avi_demux_push_event (avi, event)) {
769 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
770 (NULL), ("got eos but no streams (yet)"));
774 case GST_EVENT_FLUSH_STOP:
778 gst_adapter_clear (avi->adapter);
779 avi->have_eos = FALSE;
780 for (i = 0; i < avi->num_streams; i++) {
781 avi->stream[i].last_flow = GST_FLOW_OK;
782 avi->stream[i].discont = TRUE;
784 /* fall through to default case so that the event gets passed downstream */
787 res = gst_pad_event_default (pad, event);
791 gst_object_unref (avi);
797 gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
800 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
802 GST_DEBUG_OBJECT (avi,
803 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
805 switch (GST_EVENT_TYPE (event)) {
807 /* handle seeking only in pull mode */
808 if (!avi->streaming) {
809 res = gst_avi_demux_handle_seek (avi, pad, event);
811 res = gst_avi_demux_handle_seek_push (avi, pad, event);
813 gst_event_unref (event);
816 case GST_EVENT_NAVIGATION:
818 gst_event_unref (event);
821 res = gst_pad_event_default (pad, event);
825 gst_object_unref (avi);
830 /* streaming helper (push) */
833 * gst_avi_demux_peek_chunk_info:
835 * @tag: holder for tag
836 * @size: holder for tag size
838 * Peek next chunk info (tag and size)
840 * Returns: TRUE when one chunk info has been got
843 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
845 const guint8 *data = NULL;
847 if (gst_adapter_available (avi->adapter) < 8)
850 data = gst_adapter_peek (avi->adapter, 8);
851 *tag = GST_READ_UINT32_LE (data);
852 *size = GST_READ_UINT32_LE (data + 4);
858 * gst_avi_demux_peek_chunk:
860 * @tag: holder for tag
861 * @size: holder for tag size
863 * Peek enough data for one full chunk
865 * Returns: %TRUE when one chunk has been got
868 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
870 guint32 peek_size = 0;
873 if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
876 /* size 0 -> empty data buffer would surprise most callers,
877 * large size -> do not bother trying to squeeze that into adapter,
878 * so we throw poor man's exception, which can be caught if caller really
879 * wants to handle 0 size chunk */
880 if (!(*size) || (*size) >= (1 << 30))
883 peek_size = (*size + 1) & ~1;
884 available = gst_adapter_available (avi->adapter);
886 GST_DEBUG_OBJECT (avi,
887 "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
888 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
890 if (available < (8 + peek_size))
898 GST_INFO_OBJECT (avi, "Failed to peek");
903 GST_INFO_OBJECT (avi,
904 "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
905 GST_FOURCC_ARGS (*tag));
906 /* chain should give up */
907 avi->abort_buffering = TRUE;
912 GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
913 available, 8 + peek_size);
921 * gst_avi_demux_parse_file_header:
922 * @element: caller element (used for errors/debug).
923 * @buf: input data to be used for parsing.
925 * "Open" a RIFF/AVI file. The buffer should be at least 12
926 * bytes long. Takes ownership of @buf.
928 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
929 * Throws an error, caller should error out (fatal).
932 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
937 stamp = gst_util_get_timestamp ();
939 /* riff_parse posts an error */
940 if (!gst_riff_parse_file_header (element, buf, &doctype))
943 if (doctype != GST_RIFF_RIFF_AVI)
946 stamp = gst_util_get_timestamp () - stamp;
947 GST_DEBUG_OBJECT (element, "header parsing took %" GST_TIME_FORMAT,
948 GST_TIME_ARGS (stamp));
955 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
956 ("File is not an AVI file: %" GST_FOURCC_FORMAT,
957 GST_FOURCC_ARGS (doctype)));
963 * Read AVI file tag when streaming
966 gst_avi_demux_stream_init_push (GstAviDemux * avi)
968 if (gst_adapter_available (avi->adapter) >= 12) {
971 tmp = gst_adapter_take_buffer (avi->adapter, 12);
973 GST_DEBUG ("Parsing avi header");
974 if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), tmp)) {
975 return GST_FLOW_ERROR;
977 GST_DEBUG ("header ok");
980 avi->state = GST_AVI_DEMUX_HEADER;
989 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
992 GstBuffer *buf = NULL;
994 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
995 if (res != GST_FLOW_OK)
997 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
1007 GST_DEBUG_OBJECT (avi, "error parsing file header");
1008 return GST_FLOW_ERROR;
1012 /* AVI header handling */
1015 * gst_avi_demux_parse_avih:
1016 * @avi: caller element (used for errors/debug).
1017 * @buf: input data to be used for parsing.
1018 * @avih: pointer to structure (filled in by function) containing
1019 * stream information (such as flags, number of streams, etc.).
1021 * Read 'avih' header. Discards buffer after use.
1023 * Returns: TRUE on success, FALSE otherwise. Throws an error if
1024 * the header is invalid. The caller should error out
1028 gst_avi_demux_parse_avih (GstAviDemux * avi,
1029 GstBuffer * buf, gst_riff_avih ** _avih)
1031 gst_riff_avih *avih;
1036 if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
1037 goto avih_too_small;
1039 avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1041 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1042 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
1043 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
1044 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
1045 avih->flags = GUINT32_FROM_LE (avih->flags);
1046 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
1047 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
1048 avih->streams = GUINT32_FROM_LE (avih->streams);
1049 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
1050 avih->width = GUINT32_FROM_LE (avih->width);
1051 avih->height = GUINT32_FROM_LE (avih->height);
1052 avih->scale = GUINT32_FROM_LE (avih->scale);
1053 avih->rate = GUINT32_FROM_LE (avih->rate);
1054 avih->start = GUINT32_FROM_LE (avih->start);
1055 avih->length = GUINT32_FROM_LE (avih->length);
1059 GST_INFO_OBJECT (avi, "avih tag found:");
1060 GST_INFO_OBJECT (avi, " us_frame %u", avih->us_frame);
1061 GST_INFO_OBJECT (avi, " max_bps %u", avih->max_bps);
1062 GST_INFO_OBJECT (avi, " pad_gran %u", avih->pad_gran);
1063 GST_INFO_OBJECT (avi, " flags 0x%08x", avih->flags);
1064 GST_INFO_OBJECT (avi, " tot_frames %u", avih->tot_frames);
1065 GST_INFO_OBJECT (avi, " init_frames %u", avih->init_frames);
1066 GST_INFO_OBJECT (avi, " streams %u", avih->streams);
1067 GST_INFO_OBJECT (avi, " bufsize %u", avih->bufsize);
1068 GST_INFO_OBJECT (avi, " width %u", avih->width);
1069 GST_INFO_OBJECT (avi, " height %u", avih->height);
1070 GST_INFO_OBJECT (avi, " scale %u", avih->scale);
1071 GST_INFO_OBJECT (avi, " rate %u", avih->rate);
1072 GST_INFO_OBJECT (avi, " start %u", avih->start);
1073 GST_INFO_OBJECT (avi, " length %u", avih->length);
1076 gst_buffer_unref (buf);
1078 if (avih->us_frame != 0 && avih->tot_frames != 0)
1080 (guint64) avih->us_frame * (guint64) avih->tot_frames * 1000;
1082 avi->duration = GST_CLOCK_TIME_NONE;
1084 GST_INFO_OBJECT (avi, " header duration %" GST_TIME_FORMAT,
1085 GST_TIME_ARGS (avi->duration));
1092 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No buffer"));
1097 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
1098 ("Too small avih (%d available, %d needed)",
1099 GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
1100 gst_buffer_unref (buf);
1106 * gst_avi_demux_parse_superindex:
1107 * @avi: caller element (used for debugging/errors).
1108 * @buf: input data to use for parsing.
1109 * @locations: locations in the file (byte-offsets) that contain
1110 * the actual indexes (see get_avi_demux_parse_subindex()).
1111 * The array ends with GST_BUFFER_OFFSET_NONE.
1113 * Reads superindex (openDML-2 spec stuff) from the provided data.
1115 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
1116 * on error, but they are not fatal.
1119 gst_avi_demux_parse_superindex (GstAviDemux * avi,
1120 GstBuffer * buf, guint64 ** _indexes)
1130 size = buf ? GST_BUFFER_SIZE (buf) : 0;
1134 data = GST_BUFFER_DATA (buf);
1136 /* check type of index. The opendml2 specs state that
1137 * there should be 4 dwords per array entry. Type can be
1138 * either frame or field (and we don't care). */
1139 if (GST_READ_UINT16_LE (data) != 4 ||
1140 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
1141 GST_WARNING_OBJECT (avi,
1142 "Superindex for stream has unexpected "
1143 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1144 GST_READ_UINT16_LE (data), data[2], data[3]);
1145 bpe = GST_READ_UINT16_LE (data) * 4;
1147 num = GST_READ_UINT32_LE (&data[4]);
1149 GST_DEBUG_OBJECT (avi, "got %d indexes", num);
1151 indexes = g_new (guint64, num + 1);
1152 for (i = 0; i < num; i++) {
1153 if (size < 24 + bpe * (i + 1))
1155 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1156 GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
1158 indexes[i] = GST_BUFFER_OFFSET_NONE;
1159 *_indexes = indexes;
1161 gst_buffer_unref (buf);
1168 GST_ERROR_OBJECT (avi,
1169 "Not enough data to parse superindex (%d available, 24 needed)", size);
1171 gst_buffer_unref (buf);
1176 /* add an entry to the index of a stream. @num should be an estimate of the
1177 * total amount of index entries for all streams and is used to dynamically
1178 * allocate memory for the index entries. */
1179 static inline gboolean
1180 gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
1181 guint num, GstAviIndexEntry * entry)
1183 /* ensure index memory */
1184 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
1185 guint idx_max = stream->idx_max;
1186 GstAviIndexEntry *new_idx;
1188 /* we need to make some more room */
1190 /* initial size guess, assume each stream has an equal amount of entries,
1191 * overshoot with at least 8K */
1192 idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
1194 idx_max += 8192 / sizeof (GstAviIndexEntry);
1195 GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
1196 stream->idx_max, idx_max);
1198 new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
1199 /* out of memory, if this fails stream->index is untouched. */
1200 if (G_UNLIKELY (!new_idx))
1203 stream->index = new_idx;
1204 stream->idx_max = idx_max;
1207 /* update entry total and stream stats. The entry total can be converted to
1208 * the timestamp of the entry easily. */
1209 if (stream->strh->type == GST_RIFF_FCC_auds) {
1212 if (stream->is_vbr) {
1213 entry->total = stream->total_blocks;
1215 entry->total = stream->total_bytes;
1217 blockalign = stream->strf.auds->blockalign;
1219 stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
1221 stream->total_blocks++;
1223 if (stream->is_vbr) {
1224 entry->total = stream->idx_n;
1226 entry->total = stream->total_bytes;
1229 stream->total_bytes += entry->size;
1230 if (ENTRY_IS_KEYFRAME (entry))
1231 stream->n_keyframes++;
1234 GST_LOG_OBJECT (avi,
1235 "Adding stream %u, index entry %d, kf %d, size %u "
1236 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
1237 stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
1239 stream->index[stream->idx_n++] = *entry;
1244 /* given @entry_n in @stream, calculate info such as timestamps and
1245 * offsets for the entry. */
1247 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1248 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1249 guint64 * offset, guint64 * offset_end)
1251 GstAviIndexEntry *entry;
1253 entry = &stream->index[entry_n];
1255 if (stream->is_vbr) {
1256 /* VBR stream next timestamp */
1257 if (stream->strh->type == GST_RIFF_FCC_auds) {
1260 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
1262 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1267 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
1269 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1272 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
1273 /* constant rate stream */
1276 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
1278 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
1279 entry->total + entry->size);
1281 if (stream->strh->type == GST_RIFF_FCC_vids) {
1282 /* video offsets are the frame number */
1286 *offset_end = entry_n + 1;
1288 /* no offsets for audio */
1296 /* collect and debug stats about the indexes for all streams.
1297 * This method is also responsible for filling in the stream duration
1298 * as measured by the amount of index entries.
1300 * Returns TRUE if the index is not empty, else FALSE */
1302 gst_avi_demux_do_index_stats (GstAviDemux * avi)
1304 guint total_idx = 0;
1306 #ifndef GST_DISABLE_GST_DEBUG
1307 guint total_max = 0;
1310 /* get stream stats now */
1311 for (i = 0; i < avi->num_streams; i++) {
1312 GstAviStream *stream;
1314 if (G_UNLIKELY (!(stream = &avi->stream[i])))
1316 if (G_UNLIKELY (!stream->strh))
1318 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
1321 /* we interested in the end_ts of the last entry, which is the total
1322 * duration of this stream */
1323 gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
1324 NULL, &stream->idx_duration, NULL, NULL);
1326 total_idx += stream->idx_n;
1327 #ifndef GST_DISABLE_GST_DEBUG
1328 total_max += stream->idx_max;
1330 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
1331 "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
1332 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
1333 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
1334 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
1335 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
1337 total_idx *= sizeof (GstAviIndexEntry);
1338 #ifndef GST_DISABLE_GST_DEBUG
1339 total_max *= sizeof (GstAviIndexEntry);
1341 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
1342 total_max, total_idx, total_max - total_idx);
1344 if (total_idx == 0) {
1345 GST_WARNING_OBJECT (avi, "Index is empty !");
1352 * gst_avi_demux_parse_subindex:
1354 * @buf: input data to use for parsing.
1355 * @stream: stream context.
1356 * @entries_list: a list (returned by the function) containing all the
1357 * indexes parsed in this specific subindex. The first
1358 * entry is also a pointer to allocated memory that needs
1359 * to be free´ed. May be NULL if no supported indexes were
1362 * Reads superindex (openDML-2 spec stuff) from the provided data.
1363 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1365 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1366 * throw an error, caller should bail out asap.
1369 gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
1381 size = GST_BUFFER_SIZE (buf);
1387 data = GST_BUFFER_DATA (buf);
1389 /* We don't support index-data yet */
1391 goto not_implemented;
1393 /* check type of index. The opendml2 specs state that
1394 * there should be 4 dwords per array entry. Type can be
1395 * either frame or field (and we don't care). */
1396 bpe = (data[2] & 0x01) ? 12 : 8;
1397 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1398 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1399 GST_WARNING_OBJECT (avi,
1400 "Superindex for stream %d has unexpected "
1401 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1402 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1403 bpe = GST_READ_UINT16_LE (data) * 4;
1405 num = GST_READ_UINT32_LE (&data[4]);
1406 baseoff = GST_READ_UINT64_LE (&data[12]);
1408 /* If there's nothing, just return ! */
1412 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1414 for (i = 0; i < num; i++) {
1415 GstAviIndexEntry entry;
1417 if (size < 24 + bpe * (i + 1))
1420 /* fill in offset and size. offset contains the keyframe flag in the
1422 entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1423 entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1425 if (stream->strh->type == GST_RIFF_FCC_auds) {
1426 /* all audio frames are keyframes */
1427 ENTRY_SET_KEYFRAME (&entry);
1429 /* else read flags */
1430 entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
1432 entry.size &= ~0x80000000;
1435 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
1438 gst_buffer_unref (buf);
1445 GST_ERROR_OBJECT (avi,
1446 "Not enough data to parse subindex (%d available, 24 needed)", size);
1447 gst_buffer_unref (buf);
1448 return TRUE; /* continue */
1452 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1453 ("Subindex-is-data is not implemented"));
1454 gst_buffer_unref (buf);
1459 GST_DEBUG_OBJECT (avi, "the index is empty");
1460 gst_buffer_unref (buf);
1465 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1466 ("Cannot allocate memory for %u*%u=%u bytes",
1467 (guint) sizeof (GstAviIndexEntry), num,
1468 (guint) sizeof (GstAviIndexEntry) * num));
1469 gst_buffer_unref (buf);
1476 * Read AVI index when streaming
1479 gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
1481 guint32 tag = 0, size;
1482 GstBuffer *buf = NULL;
1485 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1487 for (n = 0; n < avi->num_streams; n++) {
1488 GstAviStream *stream = &avi->stream[n];
1490 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1491 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1493 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1494 '0' + stream->num % 10)) &&
1495 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1496 '0' + stream->num % 10, 'i', 'x'))) {
1497 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1498 GST_FOURCC_ARGS (tag));
1502 avi->offset += 8 + GST_ROUND_UP_2 (size);
1504 buf = gst_buffer_new ();
1505 GST_BUFFER_DATA (buf) = gst_adapter_take (avi->adapter, size);
1506 GST_BUFFER_SIZE (buf) = size;
1508 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1512 g_free (stream->indexes);
1513 stream->indexes = NULL;
1515 /* get stream stats now */
1516 avi->have_index = gst_avi_demux_do_index_stats (avi);
1524 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
1530 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1532 for (n = 0; n < avi->num_streams; n++) {
1533 GstAviStream *stream = &avi->stream[n];
1535 if (stream->indexes == NULL)
1538 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1539 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
1540 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1542 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1543 '0' + stream->num % 10)) &&
1544 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1545 '0' + stream->num % 10, 'i', 'x'))) {
1546 /* Some ODML files (created by god knows what muxer) have a ##ix format
1547 * instead of the 'official' ix##. They are still valid though. */
1548 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1549 GST_FOURCC_ARGS (tag));
1550 gst_buffer_unref (buf);
1554 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1558 g_free (stream->indexes);
1559 stream->indexes = NULL;
1561 /* get stream stats now */
1562 avi->have_index = gst_avi_demux_do_index_stats (avi);
1566 * gst_avi_demux_riff_parse_vprp:
1567 * @element: caller element (used for debugging/error).
1568 * @buf: input data to be used for parsing, stripped from header.
1569 * @vprp: a pointer (returned by this function) to a filled-in vprp
1570 * structure. Caller should free it.
1572 * Parses a video stream´s vprp. This function takes ownership of @buf.
1574 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1575 * should be skipped on error, but it is not fatal.
1578 gst_avi_demux_riff_parse_vprp (GstElement * element,
1579 GstBuffer * buf, gst_riff_vprp ** _vprp)
1581 gst_riff_vprp *vprp;
1584 g_return_val_if_fail (buf != NULL, FALSE);
1585 g_return_val_if_fail (_vprp != NULL, FALSE);
1587 if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1590 vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1592 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1593 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1594 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1595 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1596 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1597 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1598 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1599 vprp->width = GUINT32_FROM_LE (vprp->width);
1600 vprp->height = GUINT32_FROM_LE (vprp->height);
1601 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1605 /* calculate fields based on size */
1606 k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
1608 if (vprp->fields > k) {
1609 GST_WARNING_OBJECT (element,
1610 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1613 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1614 GST_WARNING_OBJECT (element,
1615 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1616 GST_RIFF_VPRP_VIDEO_FIELDS);
1617 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1619 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1620 for (k = 0; k < vprp->fields; k++) {
1621 gst_riff_vprp_video_field_desc *fd;
1623 fd = &vprp->field_info[k];
1624 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1625 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1626 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1627 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1628 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1629 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1630 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1631 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1636 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1637 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1638 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1639 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1640 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1641 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1642 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1643 vprp->aspect & 0xffff);
1644 GST_INFO_OBJECT (element, " width %d", vprp->width);
1645 GST_INFO_OBJECT (element, " height %d", vprp->height);
1646 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1647 for (k = 0; k < vprp->fields; k++) {
1648 gst_riff_vprp_video_field_desc *fd;
1650 fd = &(vprp->field_info[k]);
1651 GST_INFO_OBJECT (element, " field %u description:", k);
1652 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1653 fd->compressed_bm_height);
1654 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1655 fd->compressed_bm_width);
1656 GST_INFO_OBJECT (element, " valid_bm_height %d",
1657 fd->valid_bm_height);
1658 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1659 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1660 fd->valid_bm_x_offset);
1661 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1662 fd->valid_bm_y_offset);
1663 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1664 fd->video_x_t_offset);
1665 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1668 gst_buffer_unref (buf);
1677 GST_ERROR_OBJECT (element,
1678 "Too small vprp (%d available, at least %d needed)",
1679 GST_BUFFER_SIZE (buf),
1680 (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1681 gst_buffer_unref (buf);
1687 gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
1691 GST_DEBUG_OBJECT (avi, "force : %d", force);
1693 for (i = 0; i < avi->num_streams; i++) {
1694 GstAviStream *stream = &avi->stream[i];
1696 if (force || stream->idx_n != 0) {
1697 GST_LOG_OBJECT (avi, "Added pad %s with caps %" GST_PTR_FORMAT,
1698 GST_PAD_NAME (stream->pad), GST_PAD_CAPS (stream->pad));
1699 gst_element_add_pad ((GstElement *) avi, stream->pad);
1700 stream->exposed = TRUE;
1701 if (avi->main_stream == -1)
1702 avi->main_stream = i;
1704 GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
1706 gst_avi_demux_reset_stream (avi, stream);
1712 * gst_avi_demux_parse_stream:
1713 * @avi: calling element (used for debugging/errors).
1714 * @buf: input buffer used to parse the stream.
1716 * Parses all subchunks in a strl chunk (which defines a single
1717 * stream). Discards the buffer after use. This function will
1718 * increment the stream counter internally.
1720 * Returns: whether the stream was identified successfully.
1721 * Errors are not fatal. It does indicate the stream
1725 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1727 GstAviStream *stream;
1728 GstElementClass *klass;
1729 GstPadTemplate *templ;
1730 GstBuffer *sub = NULL;
1733 gchar *codec_name = NULL, *padname = NULL;
1734 const gchar *tag_name;
1735 GstCaps *caps = NULL;
1737 GstElement *element;
1738 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1739 gst_riff_vprp *vprp = NULL;
1741 element = GST_ELEMENT_CAST (avi);
1743 GST_DEBUG_OBJECT (avi, "Parsing stream");
1745 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1746 GST_WARNING_OBJECT (avi,
1747 "maximum no of streams (%d) exceeded, ignoring stream",
1748 GST_AVI_DEMUX_MAX_STREAMS);
1749 gst_buffer_unref (buf);
1750 /* not a fatal error, let's say */
1754 stream = &avi->stream[avi->num_streams];
1756 /* initial settings */
1757 stream->idx_duration = GST_CLOCK_TIME_NONE;
1758 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1759 stream->duration = GST_CLOCK_TIME_NONE;
1761 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1762 /* sub can be NULL if the chunk is empty */
1764 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1765 GST_FOURCC_ARGS (tag));
1769 case GST_RIFF_TAG_strh:
1771 gst_riff_strh *strh;
1774 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1777 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1778 /* ownership given away */
1780 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1784 strh = stream->strh;
1785 /* sanity check; stream header frame rate matches global header
1787 if (stream->strh->type == GST_RIFF_FCC_vids) {
1789 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1791 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1792 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1793 "frame duration = %d ms", strh->rate, strh->scale,
1794 (gint) (s_dur / GST_MSECOND));
1795 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1796 strh->rate = GST_SECOND / GST_USECOND;
1797 strh->scale = h_dur / GST_USECOND;
1798 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1799 strh->rate, strh->scale);
1802 /* determine duration as indicated by header */
1803 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1804 strh->scale, GST_SECOND, (guint64) strh->rate);
1805 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1806 GST_TIME_ARGS (stream->hdr_duration));
1807 if (stream->hdr_duration == 0)
1808 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1813 case GST_RIFF_TAG_strf:
1815 gboolean res = FALSE;
1818 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
1822 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
1825 switch (stream->strh->type) {
1826 case GST_RIFF_FCC_vids:
1827 stream->is_vbr = TRUE;
1828 res = gst_riff_parse_strf_vids (element, sub,
1829 &stream->strf.vids, &stream->extradata);
1831 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
1833 case GST_RIFF_FCC_auds:
1834 stream->is_vbr = (stream->strh->samplesize == 0)
1835 && stream->strh->scale > 1;
1837 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
1838 &stream->extradata);
1840 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
1841 stream->is_vbr, res);
1843 case GST_RIFF_FCC_iavs:
1844 stream->is_vbr = TRUE;
1845 res = gst_riff_parse_strf_iavs (element, sub,
1846 &stream->strf.iavs, &stream->extradata);
1848 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
1850 case GST_RIFF_FCC_txts:
1851 /* nothing to parse here */
1852 stream->is_vbr = (stream->strh->samplesize == 0)
1853 && (stream->strh->scale > 1);
1857 GST_ERROR_OBJECT (avi,
1858 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
1859 GST_FOURCC_ARGS (stream->strh->type));
1863 gst_buffer_unref (sub);
1871 case GST_RIFF_TAG_vprp:
1874 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
1878 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
1882 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
1886 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
1887 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
1888 /* not considered fatal */
1896 case GST_RIFF_TAG_strd:
1897 if (stream->initdata)
1898 gst_buffer_unref (stream->initdata);
1899 stream->initdata = sub;
1902 case GST_RIFF_TAG_strn:
1903 g_free (stream->name);
1906 g_strndup ((gchar *) GST_BUFFER_DATA (sub),
1907 (gsize) GST_BUFFER_SIZE (sub));
1908 gst_buffer_unref (sub);
1911 stream->name = g_strdup ("");
1913 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
1916 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
1917 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
1918 '0' + avi->num_streams % 10)) {
1919 g_free (stream->indexes);
1920 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
1921 stream->superindex = TRUE;
1925 GST_WARNING_OBJECT (avi,
1926 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
1927 GST_FOURCC_ARGS (tag));
1929 case GST_RIFF_TAG_JUNK:
1933 gst_buffer_unref (sub);
1939 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
1944 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
1948 /* get class to figure out the template */
1949 klass = GST_ELEMENT_GET_CLASS (avi);
1951 /* we now have all info, let´s set up a pad and a caps and be done */
1952 /* create stream name + pad */
1953 switch (stream->strh->type) {
1954 case GST_RIFF_FCC_vids:{
1957 fourcc = (stream->strf.vids->compression) ?
1958 stream->strf.vids->compression : stream->strh->fcc_handler;
1959 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
1960 templ = gst_element_class_get_pad_template (klass, "video_%02d");
1961 caps = gst_riff_create_video_caps (fourcc, stream->strh,
1962 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
1964 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
1965 GST_TYPE_FOURCC, fourcc, NULL);
1966 } else if (got_vprp && vprp) {
1967 guint32 aspect_n, aspect_d;
1970 aspect_n = vprp->aspect >> 16;
1971 aspect_d = vprp->aspect & 0xffff;
1972 /* calculate the pixel aspect ratio using w/h and aspect ratio */
1973 n = aspect_n * stream->strf.vids->height;
1974 d = aspect_d * stream->strf.vids->width;
1976 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
1978 /* very local, not needed elsewhere */
1982 tag_name = GST_TAG_VIDEO_CODEC;
1983 avi->num_v_streams++;
1986 case GST_RIFF_FCC_auds:{
1987 padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
1988 templ = gst_element_class_get_pad_template (klass, "audio_%02d");
1989 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
1990 stream->strh, stream->strf.auds, stream->extradata,
1991 stream->initdata, &codec_name);
1993 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
1994 G_TYPE_INT, stream->strf.auds->format, NULL);
1996 tag_name = GST_TAG_AUDIO_CODEC;
1997 avi->num_a_streams++;
2000 case GST_RIFF_FCC_iavs:{
2001 guint32 fourcc = stream->strh->fcc_handler;
2003 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
2004 templ = gst_element_class_get_pad_template (klass, "video_%02d");
2005 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
2006 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
2008 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
2009 GST_TYPE_FOURCC, fourcc, NULL);
2011 tag_name = GST_TAG_VIDEO_CODEC;
2012 avi->num_v_streams++;
2015 case GST_RIFF_FCC_txts:{
2016 padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
2017 templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
2018 caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
2020 avi->num_t_streams++;
2024 g_assert_not_reached ();
2027 /* no caps means no stream */
2029 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
2033 GST_DEBUG_OBJECT (element, "codec-name=%s",
2034 (codec_name ? codec_name : "NULL"));
2035 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
2037 /* set proper settings and add it */
2039 gst_object_unref (stream->pad);
2040 pad = stream->pad = gst_pad_new_from_template (templ, padname);
2043 gst_pad_use_fixed_caps (pad);
2045 gst_pad_set_formats_function (pad,
2046 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
2047 gst_pad_set_event_mask_function (pad,
2048 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
2050 gst_pad_set_event_function (pad,
2051 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
2052 gst_pad_set_query_type_function (pad,
2053 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
2054 gst_pad_set_query_function (pad,
2055 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
2057 gst_pad_set_convert_function (pad,
2058 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
2061 if (avi->element_index)
2062 gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (stream->pad),
2065 stream->num = avi->num_streams;
2067 stream->start_entry = 0;
2068 stream->step_entry = 0;
2069 stream->stop_entry = 0;
2071 stream->current_entry = -1;
2072 stream->current_total = 0;
2074 stream->last_flow = GST_FLOW_OK;
2075 stream->discont = TRUE;
2077 stream->total_bytes = 0;
2078 stream->total_blocks = 0;
2079 stream->n_keyframes = 0;
2082 stream->idx_max = 0;
2084 gst_pad_set_element_private (pad, stream);
2087 gst_pad_set_caps (pad, caps);
2088 gst_pad_set_active (pad, TRUE);
2089 gst_caps_unref (caps);
2093 if (!stream->taglist)
2094 stream->taglist = gst_tag_list_new ();
2096 avi->got_tags = TRUE;
2098 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
2100 g_free (codec_name);
2103 gst_buffer_unref (buf);
2110 /* unref any mem that may be in use */
2112 gst_buffer_unref (buf);
2114 gst_buffer_unref (sub);
2116 g_free (codec_name);
2117 gst_avi_demux_reset_stream (avi, stream);
2124 * gst_avi_demux_parse_odml:
2125 * @avi: calling element (used for debug/error).
2126 * @buf: input buffer to be used for parsing.
2128 * Read an openDML-2.0 extension header. Fills in the frame number
2129 * in the avi demuxer object when reading succeeds.
2132 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
2136 GstBuffer *sub = NULL;
2138 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2141 case GST_RIFF_TAG_dmlh:{
2142 gst_riff_dmlh dmlh, *_dmlh;
2145 /* sub == NULL is possible and means an empty buffer */
2146 size = sub ? GST_BUFFER_SIZE (sub) : 0;
2149 if (size < sizeof (gst_riff_dmlh)) {
2150 GST_ERROR_OBJECT (avi,
2151 "DMLH entry is too small (%d bytes, %d needed)",
2152 size, (int) sizeof (gst_riff_dmlh));
2155 _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
2156 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
2158 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
2161 avi->avih->tot_frames = dmlh.totalframes;
2166 GST_WARNING_OBJECT (avi,
2167 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
2168 GST_FOURCC_ARGS (tag));
2170 case GST_RIFF_TAG_JUNK:
2172 /* skip and move to next chunk */
2174 gst_buffer_unref (sub);
2181 gst_buffer_unref (buf);
2186 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
2188 return stream->idx_n - 1;
2191 /* find a previous entry in the index with the given flags */
2193 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
2194 guint last, gboolean keyframe)
2196 GstAviIndexEntry *entry;
2199 for (i = last; i > 0; i--) {
2200 entry = &stream->index[i - 1];
2201 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2209 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
2210 guint last, gboolean keyframe)
2212 GstAviIndexEntry *entry;
2215 for (i = last + 1; i < stream->idx_n; i++) {
2216 entry = &stream->index[i];
2217 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2221 return stream->idx_n - 1;
2225 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
2227 if (entry->total < *total)
2229 else if (entry->total > *total)
2235 * gst_avi_demux_index_for_time:
2237 * @stream: the stream
2238 * @time: a time position
2240 * Finds the index entry which time is less or equal than the requested time.
2241 * Try to avoid binary search when we can convert the time to an index
2242 * position directly (for example for video frames with a fixed duration).
2244 * Returns: the found position in the index.
2247 gst_avi_demux_index_for_time (GstAviDemux * avi,
2248 GstAviStream * stream, guint64 time)
2253 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
2255 /* easy (and common) cases */
2256 if (time == 0 || stream->idx_n == 0)
2258 if (time >= stream->idx_duration)
2259 return stream->idx_n - 1;
2261 /* figure out where we need to go. For that we convert the time to an
2262 * index entry or we convert it to a total and then do a binary search. */
2263 if (stream->is_vbr) {
2264 /* VBR stream next timestamp */
2265 if (stream->strh->type == GST_RIFF_FCC_auds) {
2266 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
2268 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
2271 /* constant rate stream */
2272 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
2276 GstAviIndexEntry *entry;
2278 /* no index, find index with binary search on total */
2279 GST_LOG_OBJECT (avi, "binary search for entry with total %"
2280 G_GUINT64_FORMAT, total);
2282 entry = gst_util_array_binary_search (stream->index,
2283 stream->idx_n, sizeof (GstAviIndexEntry),
2284 (GCompareDataFunc) gst_avi_demux_index_entry_search,
2285 GST_SEARCH_MODE_BEFORE, &total, NULL);
2287 if (entry == NULL) {
2288 GST_LOG_OBJECT (avi, "not found, assume index 0");
2291 index = entry - stream->index;
2292 GST_LOG_OBJECT (avi, "found at %u", index);
2295 GST_LOG_OBJECT (avi, "converted time to index %u", index);
2301 static inline GstAviStream *
2302 gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
2305 GstAviStream *stream;
2307 /* get the stream for this entry */
2308 stream_nr = CHUNKID_TO_STREAMNR (id);
2309 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2310 GST_WARNING_OBJECT (avi, "invalid stream nr %d", stream_nr);
2313 stream = &avi->stream[stream_nr];
2314 if (G_UNLIKELY (!stream->strh)) {
2315 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2322 * gst_avi_demux_parse_index:
2323 * @avi: calling element (used for debugging/errors).
2324 * @buf: buffer containing the full index.
2326 * Read index entries from the provided buffer.
2327 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2330 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2336 gst_riff_index_entry *index;
2338 GstAviStream *stream;
2339 GstAviIndexEntry entry;
2345 data = GST_BUFFER_DATA (buf);
2346 size = GST_BUFFER_SIZE (buf);
2348 stamp = gst_util_get_timestamp ();
2350 /* see how many items in the index */
2351 num = size / sizeof (gst_riff_index_entry);
2355 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2357 index = (gst_riff_index_entry *) data;
2358 pos_before = avi->offset;
2360 /* figure out if the index is 0 based or relative to the MOVI start */
2361 entry.offset = GST_READ_UINT32_LE (&index[0].offset);
2362 if (entry.offset < avi->offset) {
2363 avi->index_offset = avi->offset + 8;
2364 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2366 avi->index_offset = 0;
2367 GST_DEBUG ("index is 0 based");
2370 for (i = 0, n = 0; i < num; i++) {
2371 id = GST_READ_UINT32_LE (&index[i].id);
2372 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2374 /* some sanity checks */
2375 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2376 (entry.offset == 0 && n > 0)))
2379 /* get the stream for this entry */
2380 stream = gst_avi_demux_stream_for_id (avi, id);
2381 if (G_UNLIKELY (!stream))
2384 /* handle offset and size */
2385 entry.offset += avi->index_offset + 8;
2386 entry.size = GST_READ_UINT32_LE (&index[i].size);
2389 if (stream->strh->type == GST_RIFF_FCC_auds) {
2390 /* all audio frames are keyframes */
2391 ENTRY_SET_KEYFRAME (&entry);
2394 /* else read flags */
2395 flags = GST_READ_UINT32_LE (&index[i].flags);
2396 if (flags & GST_RIFF_IF_KEYFRAME) {
2397 ENTRY_SET_KEYFRAME (&entry);
2399 ENTRY_UNSET_KEYFRAME (&entry);
2404 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2409 gst_buffer_unref (buf);
2411 /* get stream stats now */
2412 avi->have_index = gst_avi_demux_do_index_stats (avi);
2414 stamp = gst_util_get_timestamp () - stamp;
2415 GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT,
2416 GST_TIME_ARGS (stamp));
2423 GST_DEBUG_OBJECT (avi, "empty index");
2424 gst_buffer_unref (buf);
2429 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2430 ("Cannot allocate memory for %u*%u=%u bytes",
2431 (guint) sizeof (GstAviIndexEntry), num,
2432 (guint) sizeof (GstAviIndexEntry) * num));
2433 gst_buffer_unref (buf);
2439 * gst_avi_demux_stream_index:
2440 * @avi: avi demuxer object.
2442 * Seeks to index and reads it.
2445 gst_avi_demux_stream_index (GstAviDemux * avi)
2448 guint64 offset = avi->offset;
2453 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2455 /* get chunk information */
2456 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2457 if (res != GST_FLOW_OK)
2459 else if (GST_BUFFER_SIZE (buf) < 8)
2462 /* check tag first before blindy trying to read 'size' bytes */
2463 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2464 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2465 if (tag == GST_RIFF_TAG_LIST) {
2466 /* this is the movi tag */
2467 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2468 (8 + GST_ROUND_UP_2 (size)));
2469 offset += 8 + GST_ROUND_UP_2 (size);
2470 gst_buffer_unref (buf);
2471 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2472 if (res != GST_FLOW_OK)
2474 else if (GST_BUFFER_SIZE (buf) < 8)
2476 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2477 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2480 if (tag != GST_RIFF_TAG_idx1)
2485 gst_buffer_unref (buf);
2487 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2489 /* read chunk, advance offset */
2490 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2491 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2494 GST_DEBUG ("will parse index chunk size %u for tag %"
2495 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2497 gst_avi_demux_parse_index (avi, buf);
2499 #ifndef GST_DISABLE_GST_DEBUG
2500 /* debug our indexes */
2503 GstAviStream *stream;
2505 for (i = 0; i < avi->num_streams; i++) {
2506 stream = &avi->stream[i];
2507 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2508 i, stream->idx_n, stream->total_bytes);
2517 GST_DEBUG_OBJECT (avi,
2518 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2523 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2524 gst_buffer_unref (buf);
2529 GST_WARNING_OBJECT (avi,
2530 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2531 GST_FOURCC_ARGS (tag));
2532 gst_buffer_unref (buf);
2537 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2538 gst_buffer_unref (buf);
2544 * gst_avi_demux_peek_tag:
2546 * Returns the tag and size of the next chunk
2548 static GstFlowReturn
2549 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2552 GstFlowReturn res = GST_FLOW_OK;
2553 GstBuffer *buf = NULL;
2557 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2558 if (res != GST_FLOW_OK)
2561 bufsize = GST_BUFFER_SIZE (buf);
2565 bufdata = GST_BUFFER_DATA (buf);
2567 *tag = GST_READ_UINT32_LE (bufdata);
2568 *size = GST_READ_UINT32_LE (bufdata + 4);
2570 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2571 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2572 *size, offset + 8, offset + 8 + (gint64) * size);
2575 gst_buffer_unref (buf);
2582 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2587 GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
2588 res = GST_FLOW_ERROR;
2594 * gst_avi_demux_next_data_buffer:
2596 * Returns the offset and size of the next buffer
2597 * Position is the position of the buffer (after tag and size)
2599 static GstFlowReturn
2600 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2601 guint32 * tag, guint * size)
2603 guint64 off = *offset;
2608 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2609 if (res != GST_FLOW_OK)
2611 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2612 off += 8 + 4; /* skip tag + size + subtag */
2624 * gst_avi_demux_stream_scan:
2625 * @avi: calling element (used for debugging/errors).
2627 * Scan the file for all chunks to "create" a new index.
2631 gst_avi_demux_stream_scan (GstAviDemux * avi)
2634 GstAviStream *stream;
2643 * - implement non-seekable source support.
2645 GST_DEBUG_OBJECT (avi, "Creating index");
2647 /* get the size of the file */
2648 format = GST_FORMAT_BYTES;
2649 if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
2653 /* guess the total amount of entries we expect */
2657 GstAviIndexEntry entry;
2660 /* start reading data buffers to find the id and offset */
2661 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2662 if (G_UNLIKELY (res != GST_FLOW_OK))
2666 stream = gst_avi_demux_stream_for_id (avi, tag);
2667 if (G_UNLIKELY (!stream))
2670 /* we can't figure out the keyframes, assume they all are */
2671 entry.flags = GST_AVI_KEYFRAME;
2675 /* and add to the index of this stream */
2676 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2680 /* update position */
2681 pos += GST_ROUND_UP_2 (size);
2682 if (G_UNLIKELY (pos > length)) {
2683 GST_WARNING_OBJECT (avi,
2684 "Stopping index lookup since we are further than EOF");
2690 avi->have_index = gst_avi_demux_do_index_stats (avi);
2698 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2699 ("Cannot allocate memory for %u*%u=%u bytes",
2700 (guint) sizeof (GstAviIndexEntry), num,
2701 (guint) sizeof (GstAviIndexEntry) * num));
2707 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
2711 GstAviStream *stream;
2713 total = GST_CLOCK_TIME_NONE;
2715 /* all streams start at a timestamp 0 */
2716 for (i = 0; i < avi->num_streams; i++) {
2717 GstClockTime duration, hduration;
2718 gst_riff_strh *strh;
2720 stream = &avi->stream[i];
2721 if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh)))
2724 /* get header duration for the stream */
2725 hduration = stream->hdr_duration;
2726 /* index duration calculated during parsing */
2727 duration = stream->idx_duration;
2729 /* now pick a good duration */
2730 if (GST_CLOCK_TIME_IS_VALID (duration)) {
2731 /* index gave valid duration, use that */
2732 GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT,
2733 stream, GST_TIME_ARGS (duration));
2735 /* fall back to header info to calculate a duration */
2736 duration = hduration;
2738 GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT,
2739 i, GST_TIME_ARGS (duration));
2740 /* set duration for the stream */
2741 stream->duration = duration;
2743 /* find total duration */
2744 if (total == GST_CLOCK_TIME_NONE ||
2745 (GST_CLOCK_TIME_IS_VALID (duration) && duration > total))
2749 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
2750 /* now update the duration for those streams where we had none */
2751 for (i = 0; i < avi->num_streams; i++) {
2752 stream = &avi->stream[i];
2754 if (!GST_CLOCK_TIME_IS_VALID (stream->duration)
2755 || stream->duration == 0) {
2756 stream->duration = total;
2758 GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT,
2759 stream, GST_TIME_ARGS (total));
2764 /* and set the total duration in the segment. */
2765 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
2766 GST_TIME_ARGS (total));
2768 gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
2771 /* returns FALSE if there are no pads to deliver event to,
2772 * otherwise TRUE (whatever the outcome of event sending),
2773 * takes ownership of the event. */
2775 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
2777 gboolean result = FALSE;
2780 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
2781 GST_EVENT_TYPE_NAME (event), avi->num_streams);
2783 for (i = 0; i < avi->num_streams; i++) {
2784 GstAviStream *stream = &avi->stream[i];
2788 gst_pad_push_event (stream->pad, gst_event_ref (event));
2791 gst_event_unref (event);
2796 gst_avi_demux_check_seekability (GstAviDemux * avi)
2799 gboolean seekable = FALSE;
2800 gint64 start = -1, stop = -1;
2802 query = gst_query_new_seeking (GST_FORMAT_BYTES);
2803 if (!gst_pad_peer_query (avi->sinkpad, query)) {
2804 GST_DEBUG_OBJECT (avi, "seeking query failed");
2808 gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
2810 /* try harder to query upstream size if we didn't get it the first time */
2811 if (seekable && stop == -1) {
2812 GstFormat fmt = GST_FORMAT_BYTES;
2814 GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
2815 gst_pad_query_peer_duration (avi->sinkpad, &fmt, &stop);
2818 /* if upstream doesn't know the size, it's likely that it's not seekable in
2819 * practice even if it technically may be seekable */
2820 if (seekable && (start != 0 || stop <= start)) {
2821 GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
2825 if (!avi->element_index) {
2826 GST_DEBUG_OBJECT (avi, "no index");
2831 GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
2832 G_GUINT64_FORMAT ")", seekable, start, stop);
2833 avi->seekable = seekable;
2835 gst_query_unref (query);
2839 * Read AVI headers when streaming
2841 static GstFlowReturn
2842 gst_avi_demux_stream_header_push (GstAviDemux * avi)
2844 GstFlowReturn ret = GST_FLOW_OK;
2849 GstBuffer *buf = NULL, *sub = NULL;
2853 GstTagList *tags = NULL;
2855 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
2857 switch (avi->header_state) {
2858 case GST_AVI_DEMUX_HEADER_TAG_LIST:
2859 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
2860 avi->offset += 8 + GST_ROUND_UP_2 (size);
2861 if (tag != GST_RIFF_TAG_LIST)
2862 goto header_no_list;
2864 gst_adapter_flush (avi->adapter, 8);
2865 /* Find the 'hdrl' LIST tag */
2866 GST_DEBUG ("Reading %d bytes", size);
2867 buf = gst_adapter_take_buffer (avi->adapter, size);
2869 if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
2870 goto header_no_hdrl;
2874 gst_adapter_flush (avi->adapter, 1);
2876 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
2878 /* the hdrl starts with a 'avih' header */
2879 if (!gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2881 goto header_no_avih;
2883 if (tag != GST_RIFF_TAG_avih)
2884 goto header_no_avih;
2886 if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
2887 goto header_wrong_avih;
2889 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
2891 /* now, read the elements from the header until the end */
2892 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2894 /* sub can be NULL on empty tags */
2899 case GST_RIFF_TAG_LIST:
2900 if (GST_BUFFER_SIZE (sub) < 4)
2903 switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
2904 case GST_RIFF_LIST_strl:
2905 if (!(gst_avi_demux_parse_stream (avi, sub))) {
2907 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
2908 ("failed to parse stream, ignoring"));
2913 case GST_RIFF_LIST_odml:
2914 gst_avi_demux_parse_odml (avi, sub);
2918 GST_WARNING_OBJECT (avi,
2919 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
2920 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
2923 case GST_RIFF_TAG_JUNK:
2928 gst_avi_demux_parse_idit (avi, sub);
2931 GST_WARNING_OBJECT (avi,
2932 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
2933 offset, GST_FOURCC_ARGS (tag));
2935 case GST_RIFF_TAG_JUNK:
2937 /* move to next chunk */
2939 gst_buffer_unref (sub);
2944 gst_buffer_unref (buf);
2945 GST_DEBUG ("elements parsed");
2947 /* check parsed streams */
2948 if (avi->num_streams == 0) {
2950 } else if (avi->num_streams != avi->avih->streams) {
2951 GST_WARNING_OBJECT (avi,
2952 "Stream header mentioned %d streams, but %d available",
2953 avi->avih->streams, avi->num_streams);
2955 GST_DEBUG ("Get junk and info next");
2956 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
2958 /* Need more data */
2962 case GST_AVI_DEMUX_HEADER_INFO:
2963 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
2965 if (gst_adapter_available (avi->adapter) < 12)
2968 data = gst_adapter_peek (avi->adapter, 12);
2969 tag = GST_READ_UINT32_LE (data);
2970 size = GST_READ_UINT32_LE (data + 4);
2971 ltag = GST_READ_UINT32_LE (data + 8);
2973 if (tag == GST_RIFF_TAG_LIST) {
2975 case GST_RIFF_LIST_movi:
2976 gst_adapter_flush (avi->adapter, 12);
2979 case GST_RIFF_LIST_INFO:
2980 GST_DEBUG ("Found INFO chunk");
2981 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
2982 GST_DEBUG ("got size %d", size);
2984 gst_adapter_flush (avi->adapter, 12);
2986 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
2989 gst_adapter_flush (avi->adapter, 1);
2990 gst_riff_parse_info (GST_ELEMENT_CAST (avi), buf, &tags);
2992 if (avi->globaltags) {
2993 gst_tag_list_insert (avi->globaltags, tags,
2994 GST_TAG_MERGE_REPLACE);
2996 avi->globaltags = tags;
3000 gst_buffer_unref (buf);
3002 avi->offset += GST_ROUND_UP_2 (size) - 4;
3004 GST_DEBUG ("skipping INFO LIST prefix");
3007 /* Need more data */
3012 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3013 avi->offset += 8 + GST_ROUND_UP_2 (size);
3014 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3015 // ??? goto iterate; ???
3017 /* Need more data */
3023 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3024 avi->offset += 8 + GST_ROUND_UP_2 (size);
3025 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3028 /* Need more data */
3035 GST_WARNING ("unhandled header state: %d", avi->header_state);
3040 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3041 avi->num_streams, avi->stream[0].indexes);
3043 GST_DEBUG ("Found movi chunk. Starting to stream data");
3044 avi->state = GST_AVI_DEMUX_MOVI;
3046 /* no indexes in push mode, but it still sets some variables */
3047 gst_avi_demux_calculate_durations_from_index (avi);
3049 gst_avi_demux_expose_streams (avi, TRUE);
3051 /* prepare all streams for index 0 */
3052 for (i = 0; i < avi->num_streams; i++)
3053 avi->stream[i].current_entry = 0;
3055 /* create initial NEWSEGMENT event */
3056 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3057 stop = avi->segment.duration;
3059 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3062 gst_event_unref (avi->seg_event);
3063 avi->seg_event = gst_event_new_new_segment_full
3064 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3065 avi->segment.start, stop, avi->segment.time);
3067 gst_avi_demux_check_seekability (avi);
3069 /* at this point we know all the streams and we can signal the no more
3071 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3072 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3079 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3080 return GST_FLOW_ERROR;
3084 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3085 ("Invalid AVI header (no LIST at start): %"
3086 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3087 return GST_FLOW_ERROR;
3091 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3092 ("Invalid AVI header (no hdrl at start): %"
3093 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3094 gst_buffer_unref (buf);
3095 return GST_FLOW_ERROR;
3099 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3100 ("Invalid AVI header (no avih at start): %"
3101 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3103 gst_buffer_unref (sub);
3105 gst_buffer_unref (buf);
3106 return GST_FLOW_ERROR;
3110 gst_buffer_unref (buf);
3111 return GST_FLOW_ERROR;
3116 gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d)
3119 date = g_date_new_dmy (d, m, y);
3120 if (!g_date_valid (date)) {
3122 GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
3127 if (avi->globaltags == NULL)
3128 avi->globaltags = gst_tag_list_new ();
3130 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
3136 gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data)
3141 ret = sscanf (data, "%d:%d:%d", &y, &m, &d);
3143 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3146 gst_avi_demux_add_date_tag (avi, y, m, d);
3150 get_month_num (gchar * data, guint size)
3152 if (g_ascii_strncasecmp (data, "jan", 3) == 0) {
3154 } else if (g_ascii_strncasecmp (data, "feb", 3) == 0) {
3156 } else if (g_ascii_strncasecmp (data, "mar", 3) == 0) {
3158 } else if (g_ascii_strncasecmp (data, "apr", 3) == 0) {
3160 } else if (g_ascii_strncasecmp (data, "may", 3) == 0) {
3162 } else if (g_ascii_strncasecmp (data, "jun", 3) == 0) {
3164 } else if (g_ascii_strncasecmp (data, "jul", 3) == 0) {
3166 } else if (g_ascii_strncasecmp (data, "aug", 3) == 0) {
3168 } else if (g_ascii_strncasecmp (data, "sep", 3) == 0) {
3170 } else if (g_ascii_strncasecmp (data, "oct", 3) == 0) {
3172 } else if (g_ascii_strncasecmp (data, "nov", 3) == 0) {
3174 } else if (g_ascii_strncasecmp (data, "dec", 3) == 0) {
3182 gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data)
3184 gint year, month, day;
3185 gint hour, min, sec;
3190 ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour,
3193 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3196 month = get_month_num (monthstr, strlen (monthstr));
3197 gst_avi_demux_add_date_tag (avi, year, month, day);
3201 gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
3203 gchar *data = (gchar *) GST_BUFFER_DATA (buf);
3204 guint size = GST_BUFFER_SIZE (buf);
3205 gchar *safedata = NULL;
3209 * http://www.eden-foundation.org/products/code/film_date_stamp/index.html
3211 * This tag could be in one of the below formats
3212 * 2005:08:17 11:42:43
3213 * THU OCT 26 16:46:04 2006
3214 * Mon Mar 3 09:44:56 2008
3216 * FIXME: Our date tag doesn't include hours
3219 /* skip eventual initial whitespace */
3220 while (size > 0 && g_ascii_isspace (data[0])) {
3229 /* make a safe copy to add a \0 to the end of the string */
3230 safedata = g_strndup (data, size);
3232 /* test if the first char is a alpha or a number */
3233 if (g_ascii_isdigit (data[0])) {
3234 gst_avi_demux_parse_idit_nums_only (avi, safedata);
3237 } else if (g_ascii_isalpha (data[0])) {
3238 gst_avi_demux_parse_idit_text (avi, safedata);
3246 GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
3250 * Read full AVI headers.
3252 static GstFlowReturn
3253 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3256 GstBuffer *buf, *sub = NULL;
3260 GstElement *element = GST_ELEMENT_CAST (avi);
3262 GstTagList *tags = NULL;
3264 stamp = gst_util_get_timestamp ();
3266 /* the header consists of a 'hdrl' LIST tag */
3267 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3268 if (res != GST_FLOW_OK)
3269 goto pull_range_failed;
3270 else if (tag != GST_RIFF_TAG_LIST)
3272 else if (GST_BUFFER_SIZE (buf) < 4)
3275 GST_DEBUG_OBJECT (avi, "parsing headers");
3277 /* Find the 'hdrl' LIST tag */
3278 while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
3279 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3280 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
3283 gst_buffer_unref (buf);
3285 /* read new chunk */
3286 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3287 if (res != GST_FLOW_OK)
3288 goto pull_range_failed;
3289 else if (tag != GST_RIFF_TAG_LIST)
3291 else if (GST_BUFFER_SIZE (buf) < 4)
3295 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3297 /* the hdrl starts with a 'avih' header */
3298 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3300 else if (tag != GST_RIFF_TAG_avih)
3302 else if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih))
3305 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3307 /* now, read the elements from the header until the end */
3308 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3309 /* sub can be NULL on empty tags */
3314 case GST_RIFF_TAG_LIST:
3319 if (GST_BUFFER_SIZE (sub) < 4)
3322 data = GST_BUFFER_DATA (sub);
3323 fourcc = GST_READ_UINT32_LE (data);
3326 case GST_RIFF_LIST_strl:
3327 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3328 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3329 ("failed to parse stream, ignoring"));
3334 case GST_RIFF_LIST_odml:
3335 gst_avi_demux_parse_odml (avi, sub);
3338 case GST_RIFF_LIST_INFO:
3339 GST_BUFFER_DATA (sub) = data + 4;
3340 GST_BUFFER_SIZE (sub) -= 4;
3341 gst_riff_parse_info (element, sub, &tags);
3343 if (avi->globaltags) {
3344 gst_tag_list_insert (avi->globaltags, tags,
3345 GST_TAG_MERGE_REPLACE);
3347 avi->globaltags = tags;
3353 GST_WARNING_OBJECT (avi,
3354 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3355 GST_FOURCC_ARGS (fourcc));
3356 GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
3357 GST_BUFFER_SIZE (sub));
3359 case GST_RIFF_TAG_JUNK:
3365 gst_avi_demux_parse_idit (avi, sub);
3368 GST_WARNING_OBJECT (avi,
3369 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3370 GST_FOURCC_ARGS (tag), offset);
3371 GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
3372 GST_BUFFER_SIZE (sub));
3374 case GST_RIFF_TAG_JUNK:
3377 gst_buffer_unref (sub);
3382 gst_buffer_unref (buf);
3383 GST_DEBUG ("elements parsed");
3385 /* check parsed streams */
3386 if (avi->num_streams == 0)
3388 else if (avi->num_streams != avi->avih->streams) {
3389 GST_WARNING_OBJECT (avi,
3390 "Stream header mentioned %d streams, but %d available",
3391 avi->avih->streams, avi->num_streams);
3394 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3395 G_GUINT64_FORMAT, avi->offset);
3397 /* Now, find the data (i.e. skip all junk between header and data) */
3403 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3404 if (res != GST_FLOW_OK) {
3405 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3406 goto pull_range_failed;
3407 } else if (GST_BUFFER_SIZE (buf) < 12) {
3408 GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
3409 GST_BUFFER_SIZE (buf));
3410 gst_buffer_unref (buf);
3411 return GST_FLOW_ERROR;
3414 data = GST_BUFFER_DATA (buf);
3416 tag = GST_READ_UINT32_LE (data);
3417 size = GST_READ_UINT32_LE (data + 4);
3418 ltag = GST_READ_UINT32_LE (data + 8);
3420 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3421 GST_FOURCC_ARGS (tag), size);
3422 GST_MEMDUMP ("Tag content", data, GST_BUFFER_SIZE (buf));
3423 gst_buffer_unref (buf);
3426 case GST_RIFF_TAG_LIST:{
3428 case GST_RIFF_LIST_movi:
3429 GST_DEBUG_OBJECT (avi,
3430 "Reached the 'movi' tag, we're done with skipping");
3432 case GST_RIFF_LIST_INFO:
3434 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3436 if (res != GST_FLOW_OK) {
3437 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3438 goto pull_range_failed;
3440 GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
3442 GST_DEBUG ("skipping INFO LIST prefix");
3443 avi->offset += (4 - GST_ROUND_UP_2 (size));
3444 gst_buffer_unref (buf);
3448 sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
3449 gst_riff_parse_info (element, sub, &tags);
3451 if (avi->globaltags) {
3452 gst_tag_list_insert (avi->globaltags, tags,
3453 GST_TAG_MERGE_REPLACE);
3455 avi->globaltags = tags;
3460 gst_buffer_unref (sub);
3463 gst_buffer_unref (buf);
3464 /* gst_riff_read_chunk() has already advanced avi->offset */
3467 GST_WARNING_OBJECT (avi,
3468 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3469 GST_FOURCC_ARGS (ltag));
3470 avi->offset += 8 + GST_ROUND_UP_2 (size);
3476 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3477 GST_FOURCC_ARGS (tag));
3479 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3480 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3481 /* Only get buffer for debugging if the memdump is needed */
3482 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
3483 res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf);
3484 if (res != GST_FLOW_OK) {
3485 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3486 goto pull_range_failed;
3488 GST_MEMDUMP ("Junk", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
3489 gst_buffer_unref (buf);
3491 avi->offset += 8 + GST_ROUND_UP_2 (size);
3497 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3498 avi->num_streams, avi->stream[0].indexes);
3500 /* create or read stream index (for seeking) */
3501 if (avi->stream[0].indexes != NULL) {
3502 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3503 gst_avi_demux_read_subindexes_pull (avi);
3505 if (!avi->have_index) {
3506 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
3507 gst_avi_demux_stream_index (avi);
3509 /* still no index, scan */
3510 if (!avi->have_index) {
3511 gst_avi_demux_stream_scan (avi);
3513 /* still no index.. this is a fatal error for now.
3514 * FIXME, we should switch to plain push mode without seeking
3515 * instead of failing. */
3516 if (!avi->have_index)
3520 /* use the indexes now to construct nice durations */
3521 gst_avi_demux_calculate_durations_from_index (avi);
3523 gst_avi_demux_expose_streams (avi, FALSE);
3525 /* create initial NEWSEGMENT event */
3526 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3527 stop = avi->segment.duration;
3529 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3531 /* do initial seek to the default segment values */
3532 gst_avi_demux_do_seek (avi, &avi->segment);
3534 /* prepare initial segment */
3536 gst_event_unref (avi->seg_event);
3537 avi->seg_event = gst_event_new_new_segment_full
3538 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3539 avi->segment.start, stop, avi->segment.time);
3541 stamp = gst_util_get_timestamp () - stamp;
3542 GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT,
3543 GST_TIME_ARGS (stamp));
3545 /* at this point we know all the streams and we can signal the no more
3547 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3548 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3555 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3556 ("Invalid AVI header (no LIST at start): %"
3557 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3558 gst_buffer_unref (buf);
3559 return GST_FLOW_ERROR;
3563 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3564 ("Invalid AVI header (no hdrl at start): %"
3565 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3566 gst_buffer_unref (buf);
3567 return GST_FLOW_ERROR;
3571 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3572 ("Invalid AVI header (no avih at start): %"
3573 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3575 gst_buffer_unref (sub);
3576 gst_buffer_unref (buf);
3577 return GST_FLOW_ERROR;
3581 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3582 ("Invalid AVI header (cannot parse avih at start)"));
3583 gst_buffer_unref (buf);
3584 return GST_FLOW_ERROR;
3588 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3589 return GST_FLOW_ERROR;
3593 GST_WARNING ("file without or too big index");
3594 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3595 ("Could not get/create index"));
3596 return GST_FLOW_ERROR;
3600 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3601 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3602 return GST_FLOW_ERROR;
3606 /* move a stream to @index */
3608 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
3609 GstSegment * segment, guint index)
3611 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
3613 if (segment->rate < 0.0) {
3615 /* Because we don't know the frame order we need to push from the prev keyframe
3616 * to the next keyframe. If there is a smart decoder downstream he will notice
3617 * that there are too many encoded frames send and return UNEXPECTED when there
3618 * are enough decoded frames to fill the segment. */
3619 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
3621 /* FIXME, we go back to 0, we should look at segment.start. We will however
3622 * stop earlier when the see the timestamp < segment.start */
3623 stream->start_entry = 0;
3624 stream->step_entry = index;
3625 stream->current_entry = index;
3626 stream->stop_entry = next_key;
3628 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
3629 stream->start_entry, stream->step_entry, stream->stop_entry);
3631 stream->start_entry = index;
3632 stream->step_entry = index;
3633 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
3635 if (stream->current_entry != index) {
3636 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
3637 stream->current_entry, index);
3638 stream->current_entry = index;
3639 stream->discont = TRUE;
3642 /* update the buffer info */
3643 gst_avi_demux_get_buffer_info (avi, stream, index,
3644 &stream->current_timestamp, &stream->current_ts_end,
3645 &stream->current_offset, &stream->current_offset_end);
3647 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
3648 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3649 ", off_end %" G_GUINT64_FORMAT, index,
3650 GST_TIME_ARGS (stream->current_timestamp),
3651 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3652 stream->current_offset_end);
3656 * Do the actual seeking.
3659 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3661 GstClockTime seek_time;
3664 GstAviStream *stream;
3666 seek_time = segment->last_stop;
3667 keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3669 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
3670 " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
3672 /* FIXME, this code assumes the main stream with keyframes is stream 0,
3673 * which is mostly correct... */
3674 stream = &avi->stream[avi->main_stream];
3676 /* get the entry index for the requested position */
3677 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
3678 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
3680 /* check if we are already on a keyframe */
3681 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
3682 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
3683 /* now go to the previous keyframe, this is where we should start
3685 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
3686 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
3689 /* move the main stream to this position */
3690 gst_avi_demux_move_stream (avi, stream, segment, index);
3693 /* when seeking to a keyframe, we update the result seek time
3694 * to the time of the keyframe. */
3695 seek_time = stream->current_timestamp;
3696 GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
3697 GST_TIME_ARGS (seek_time));
3700 /* the seek time is also the last_stop and stream time when going
3702 segment->last_stop = seek_time;
3703 if (segment->rate > 0.0)
3704 segment->time = seek_time;
3706 /* now set DISCONT and align the other streams */
3707 for (i = 0; i < avi->num_streams; i++) {
3708 GstAviStream *ostream;
3710 ostream = &avi->stream[i];
3711 if ((ostream == stream) || (ostream->index == NULL))
3714 /* get the entry index for the requested position */
3715 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
3717 /* move to previous keyframe */
3718 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
3719 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
3721 gst_avi_demux_move_stream (avi, ostream, segment, index);
3723 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
3724 GST_TIME_ARGS (seek_time));
3730 * Handle seek event.
3733 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
3738 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
3742 GstSegment seeksegment = { 0, };
3746 GST_DEBUG_OBJECT (avi, "doing seek with event");
3748 gst_event_parse_seek (event, &rate, &format, &flags,
3749 &cur_type, &cur, &stop_type, &stop);
3751 /* we have to have a format as the segment format. Try to convert
3753 if (format != GST_FORMAT_TIME) {
3754 GstFormat fmt = GST_FORMAT_TIME;
3755 gboolean res = TRUE;
3757 if (cur_type != GST_SEEK_TYPE_NONE)
3758 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
3759 if (res && stop_type != GST_SEEK_TYPE_NONE)
3760 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
3766 GST_DEBUG_OBJECT (avi,
3767 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
3768 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
3769 /* FIXME: can we do anything with rate!=1.0 */
3771 GST_DEBUG_OBJECT (avi, "doing seek without event");
3776 /* save flush flag */
3777 flush = flags & GST_SEEK_FLAG_FLUSH;
3780 GstEvent *fevent = gst_event_new_flush_start ();
3782 /* for a flushing seek, we send a flush_start on all pads. This will
3783 * eventually stop streaming with a WRONG_STATE. We can thus eventually
3784 * take the STREAM_LOCK. */
3785 GST_DEBUG_OBJECT (avi, "sending flush start");
3786 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
3787 gst_pad_push_event (avi->sinkpad, fevent);
3789 /* a non-flushing seek, we PAUSE the task so that we can take the
3791 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
3792 gst_pad_pause_task (avi->sinkpad);
3795 /* wait for streaming to stop */
3796 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
3797 GST_PAD_STREAM_LOCK (avi->sinkpad);
3799 /* copy segment, we need this because we still need the old
3800 * segment when we close the current segment. */
3801 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
3804 GST_DEBUG_OBJECT (avi, "configuring seek");
3805 gst_segment_set_seek (&seeksegment, rate, format, flags,
3806 cur_type, cur, stop_type, stop, &update);
3808 /* do the seek, seeksegment.last_stop contains the new position, this
3809 * actually never fails. */
3810 gst_avi_demux_do_seek (avi, &seeksegment);
3813 GstEvent *fevent = gst_event_new_flush_stop ();
3815 GST_DEBUG_OBJECT (avi, "sending flush stop");
3816 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
3817 gst_pad_push_event (avi->sinkpad, fevent);
3819 /* reset the last flow and mark discont, FLUSH is always DISCONT */
3820 for (i = 0; i < avi->num_streams; i++) {
3821 GST_DEBUG_OBJECT (avi, "marking DISCONT");
3822 avi->stream[i].last_flow = GST_FLOW_OK;
3823 avi->stream[i].discont = TRUE;
3825 } else if (avi->segment_running) {
3828 /* we are running the current segment and doing a non-flushing seek,
3829 * close the segment first based on the last_stop. */
3830 GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
3831 " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
3832 seg = gst_event_new_new_segment_full (TRUE,
3833 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
3834 avi->segment.start, avi->segment.last_stop, avi->segment.time);
3835 gst_avi_demux_push_event (avi, seg);
3838 /* now update the real segment info */
3839 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
3841 /* post the SEGMENT_START message when we do segmented playback */
3842 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
3843 gst_element_post_message (GST_ELEMENT_CAST (avi),
3844 gst_message_new_segment_start (GST_OBJECT_CAST (avi),
3845 avi->segment.format, avi->segment.last_stop));
3848 /* prepare for streaming again */
3849 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3850 stop = avi->segment.duration;
3852 /* queue the segment event for the streaming thread. */
3854 gst_event_unref (avi->seg_event);
3855 if (avi->segment.rate > 0.0) {
3856 /* forwards goes from last_stop to stop */
3857 avi->seg_event = gst_event_new_new_segment_full (FALSE,
3858 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
3859 avi->segment.last_stop, stop, avi->segment.time);
3861 /* reverse goes from start to last_stop */
3862 avi->seg_event = gst_event_new_new_segment_full (FALSE,
3863 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
3864 avi->segment.start, avi->segment.last_stop, avi->segment.time);
3867 if (!avi->streaming) {
3868 avi->segment_running = TRUE;
3869 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
3872 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
3879 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
3885 gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
3891 GstSeekType cur_type, stop_type;
3896 GstIndexEntry *entry;
3898 GST_DEBUG_OBJECT (avi, "doing push-based seek");
3900 gst_event_parse_seek (event, &rate, &format, &flags,
3901 &cur_type, &cur, &stop_type, &stop);
3903 if (stop_type != GST_SEEK_TYPE_NONE)
3904 goto unsupported_seek;
3907 /* only forward streaming and seeking is possible */
3909 goto unsupported_seek;
3912 if (format != GST_FORMAT_TIME)
3913 goto unsupported_format;
3915 /* not really advisable otherwise */
3916 if ((flags & GST_SEEK_FLAG_FLUSH) == 0)
3917 goto unsupported_seek;
3919 /* should have index, let's check anyway */
3920 if (!avi->element_index)
3923 /* find reasonable corresponding BYTE position
3924 * note that we have no keyframe info in push mode whatsoever,
3925 * so we can not cater for related stuff in any way */
3927 /* some slack aiming for a keyframe */
3928 if (cur < GST_AVI_SEEK_PUSH_DISPLACE)
3931 cur -= GST_AVI_SEEK_PUSH_DISPLACE;
3933 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
3934 GST_INDEX_LOOKUP_BEFORE, GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_TIME, cur);
3939 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &byte_cur);
3940 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time);
3942 GST_DEBUG_OBJECT (avi, "found index entry for %" GST_TIME_FORMAT
3943 " at %" GST_TIME_FORMAT ", located at offset %" G_GINT64_FORMAT,
3944 GST_TIME_ARGS (cur), GST_TIME_ARGS (time), byte_cur);
3946 /* adjust offset to be in each stream's region */
3947 byte_cur = gst_avi_demux_seek_streams (avi, byte_cur, TRUE);
3949 /* let's not try push seeking if target and entry are too far apart */
3950 if (cur - time > 30 * GST_SECOND)
3953 GST_DEBUG_OBJECT (avi, "Pushing BYTE seek rate %g, "
3954 "start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, rate, byte_cur,
3956 /* BYTE seek event */
3957 event = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, cur_type, byte_cur,
3959 res = gst_pad_push_event (avi->sinkpad, event);
3966 GST_DEBUG_OBJECT (avi, "could not determine byte position to seek to, "
3972 GST_DEBUG_OBJECT (avi, "unsupported seek, seek aborted.");
3977 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
3983 * Helper for gst_avi_demux_invert()
3986 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
3988 memcpy (tmp, d1, bytes);
3989 memcpy (d1, d2, bytes);
3990 memcpy (d2, tmp, bytes);
3994 #define gst_avi_demux_is_uncompressed(fourcc) \
3995 (fourcc == GST_RIFF_DIB || \
3996 fourcc == GST_RIFF_rgb || \
3997 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
4000 * Invert DIB buffers... Takes existing buffer and
4001 * returns either the buffer or a new one (with old
4002 * one dereferenced).
4003 * FIXME: can't we preallocate tmp? and remember stride, bpp?
4006 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
4013 if (stream->strh->type != GST_RIFF_FCC_vids)
4016 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
4017 return buf; /* Ignore non DIB buffers */
4020 s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
4021 if (!gst_structure_get_int (s, "bpp", &bpp)) {
4022 GST_WARNING ("Failed to retrieve depth from caps");
4026 if (stream->strf.vids == NULL) {
4027 GST_WARNING ("Failed to retrieve vids for stream");
4031 h = stream->strf.vids->height;
4032 w = stream->strf.vids->width;
4033 stride = w * (bpp / 8);
4035 buf = gst_buffer_make_writable (buf);
4036 if (GST_BUFFER_SIZE (buf) < (stride * h)) {
4037 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
4041 tmp = g_malloc (stride);
4043 for (y = 0; y < h / 2; y++) {
4044 swap_line (GST_BUFFER_DATA (buf) + stride * y,
4045 GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
4054 gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
4055 GstClockTime timestamp, guint64 offset, gboolean keyframe)
4057 /* do not add indefinitely for open-ended streaming */
4058 if (G_UNLIKELY (avi->element_index && avi->seekable)) {
4059 GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
4060 G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
4061 gst_index_add_association (avi->element_index, avi->index_id,
4062 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT : GST_ASSOCIATION_FLAG_NONE,
4063 GST_FORMAT_TIME, timestamp, GST_FORMAT_BYTES, offset, NULL);
4064 /* well, current_total determines TIME and entry DEFAULT (frame #) ... */
4065 gst_index_add_association (avi->element_index, stream->index_id,
4066 GST_ASSOCIATION_FLAG_NONE,
4067 GST_FORMAT_TIME, stream->current_total, GST_FORMAT_BYTES, offset,
4068 GST_FORMAT_DEFAULT, stream->current_entry, NULL);
4073 * Returns the aggregated GstFlowReturn.
4075 static GstFlowReturn
4076 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
4080 gboolean unexpected = FALSE, not_linked = TRUE;
4082 /* store the value */
4083 stream->last_flow = ret;
4085 /* any other error that is not-linked or eos can be returned right away */
4086 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4089 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
4090 for (i = 0; i < avi->num_streams; i++) {
4091 GstAviStream *ostream = &avi->stream[i];
4093 ret = ostream->last_flow;
4094 /* no unexpected or unlinked, return */
4095 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4098 /* we check to see if we have at least 1 unexpected or all unlinked */
4099 unexpected |= (ret == GST_FLOW_UNEXPECTED);
4100 not_linked &= (ret == GST_FLOW_NOT_LINKED);
4102 /* when we get here, we all have unlinked or unexpected */
4104 ret = GST_FLOW_NOT_LINKED;
4105 else if (unexpected)
4106 ret = GST_FLOW_UNEXPECTED;
4108 GST_LOG_OBJECT (avi, "combined %s to return %s",
4109 gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret));
4113 /* move @stream to the next position in its index */
4114 static GstFlowReturn
4115 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
4118 guint old_entry, new_entry;
4120 old_entry = stream->current_entry;
4122 new_entry = old_entry + 1;
4124 /* see if we reached the end */
4125 if (new_entry > stream->stop_entry) {
4126 if (avi->segment.rate < 0.0) {
4127 if (stream->step_entry == stream->start_entry) {
4128 /* we stepped all the way to the start, eos */
4129 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
4132 /* backwards, stop becomes step, find a new step */
4133 stream->stop_entry = stream->step_entry;
4134 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
4135 stream->stop_entry, TRUE);
4137 GST_DEBUG_OBJECT (avi,
4138 "reverse playback jump: start %u, step %u, stop %u",
4139 stream->start_entry, stream->step_entry, stream->stop_entry);
4141 /* and start from the previous keyframe now */
4142 new_entry = stream->step_entry;
4145 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
4150 if (new_entry != old_entry) {
4151 stream->current_entry = new_entry;
4152 stream->current_total = stream->index[new_entry].total;
4154 if (new_entry == old_entry + 1) {
4155 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
4156 old_entry, new_entry);
4157 /* we simply moved one step forwards, reuse current info */
4158 stream->current_timestamp = stream->current_ts_end;
4159 stream->current_offset = stream->current_offset_end;
4160 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4161 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
4163 /* we moved DISCONT, full update */
4164 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4165 &stream->current_timestamp, &stream->current_ts_end,
4166 &stream->current_offset, &stream->current_offset_end);
4167 /* and MARK discont for this stream */
4168 stream->last_flow = GST_FLOW_OK;
4169 stream->discont = TRUE;
4170 GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
4171 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4172 ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
4173 GST_TIME_ARGS (stream->current_timestamp),
4174 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4175 stream->current_offset_end);
4183 GST_DEBUG_OBJECT (avi, "we are EOS");
4184 /* setting current_timestamp to -1 marks EOS */
4185 stream->current_timestamp = -1;
4186 return GST_FLOW_UNEXPECTED;
4190 /* find the stream with the lowest current position when going forwards or with
4191 * the highest position when going backwards, this is the stream
4192 * we should push from next */
4194 gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
4196 guint64 min_time, max_time;
4197 guint stream_num, i;
4200 min_time = G_MAXUINT64;
4203 for (i = 0; i < avi->num_streams; i++) {
4205 GstAviStream *stream;
4207 stream = &avi->stream[i];
4209 /* ignore streams that finished */
4210 if (stream->last_flow == GST_FLOW_UNEXPECTED)
4213 position = stream->current_timestamp;
4215 /* position of -1 is EOS */
4216 if (position != -1) {
4217 if (rate > 0.0 && position < min_time) {
4218 min_time = position;
4220 } else if (rate < 0.0 && position >= max_time) {
4221 max_time = position;
4229 static GstFlowReturn
4230 gst_avi_demux_loop_data (GstAviDemux * avi)
4232 GstFlowReturn ret = GST_FLOW_OK;
4234 GstAviStream *stream;
4235 gboolean processed = FALSE;
4237 guint64 offset, size;
4238 GstClockTime timestamp, duration;
4239 guint64 out_offset, out_offset_end;
4241 GstAviIndexEntry *entry;
4244 stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
4247 if (G_UNLIKELY (stream_num == -1)) {
4248 GST_DEBUG_OBJECT (avi, "all streams are EOS");
4252 /* we have the stream now */
4253 stream = &avi->stream[stream_num];
4255 /* skip streams without pads */
4257 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
4262 /* get the timing info for the entry */
4263 timestamp = stream->current_timestamp;
4264 duration = stream->current_ts_end - timestamp;
4265 out_offset = stream->current_offset;
4266 out_offset_end = stream->current_offset_end;
4268 /* get the entry data info */
4269 entry = &stream->index[stream->current_entry];
4270 offset = entry->offset;
4272 keyframe = ENTRY_IS_KEYFRAME (entry);
4274 /* skip empty entries */
4276 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
4277 stream->current_entry, size, stream->pad);
4281 if (avi->segment.rate > 0.0) {
4282 /* only check this for fowards playback for now */
4283 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4284 && (timestamp > avi->segment.stop)) {
4289 GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
4290 G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
4291 stream_num, offset, offset, keyframe);
4293 /* FIXME, check large chunks and cut them up */
4295 /* pull in the data */
4296 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
4297 if (ret != GST_FLOW_OK)
4300 /* check for short buffers, this is EOS as well */
4301 if (GST_BUFFER_SIZE (buf) < size)
4304 /* invert the picture if needed */
4305 buf = gst_avi_demux_invert (stream, buf);
4307 /* mark non-keyframes */
4309 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4311 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4313 GST_BUFFER_TIMESTAMP (buf) = timestamp;
4314 GST_BUFFER_DURATION (buf) = duration;
4315 GST_BUFFER_OFFSET (buf) = out_offset;
4316 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
4318 /* mark discont when pending */
4319 if (stream->discont) {
4320 GST_DEBUG_OBJECT (avi, "setting DISCONT flag");
4321 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4322 stream->discont = FALSE;
4325 gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
4327 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4329 /* update current position in the segment */
4330 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, timestamp);
4332 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %u, ts %"
4333 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4334 ", off_end %" G_GUINT64_FORMAT,
4335 GST_BUFFER_SIZE (buf), GST_TIME_ARGS (timestamp),
4336 GST_TIME_ARGS (duration), out_offset, out_offset_end);
4338 ret = gst_pad_push (stream->pad, buf);
4340 /* mark as processed, we increment the frame and byte counters then
4341 * leave the while loop and return the GstFlowReturn */
4344 if (avi->segment.rate < 0) {
4345 if (timestamp > avi->segment.stop && ret == GST_FLOW_UNEXPECTED) {
4346 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4347 * we are at the end of the segment, so we just need to jump
4348 * back to the previous section. */
4349 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4354 /* move to next item */
4355 ret = gst_avi_demux_advance (avi, stream, ret);
4358 ret = gst_avi_demux_combine_flows (avi, stream, ret);
4359 } while (!processed);
4367 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
4368 ret = GST_FLOW_UNEXPECTED;
4373 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4374 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4375 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
4376 ret = GST_FLOW_UNEXPECTED;
4377 /* move to next stream */
4382 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
4383 " size=%" G_GUINT64_FORMAT, offset, size);
4388 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4389 ", only got %d/%" G_GUINT64_FORMAT " bytes (truncated file?)", offset,
4390 GST_BUFFER_SIZE (buf), size);
4391 gst_buffer_unref (buf);
4392 ret = GST_FLOW_UNEXPECTED;
4398 * Read data. If we have an index it delegates to
4399 * gst_avi_demux_process_next_entry().
4401 static GstFlowReturn
4402 gst_avi_demux_stream_data (GstAviDemux * avi)
4407 GstFlowReturn res = GST_FLOW_OK;
4408 GstFormat format = GST_FORMAT_TIME;
4410 if (G_UNLIKELY (avi->have_eos)) {
4411 /* Clean adapter, we're done */
4412 gst_adapter_clear (avi->adapter);
4413 return GST_FLOW_UNEXPECTED;
4416 if (G_UNLIKELY (avi->todrop)) {
4419 if ((drop = gst_adapter_available (avi->adapter))) {
4420 if (drop > avi->todrop)
4422 GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
4423 gst_adapter_flush (avi->adapter, drop);
4424 avi->todrop -= drop;
4425 avi->offset += drop;
4429 /* Iterate until need more data, so adapter won't grow too much */
4431 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4435 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4436 GST_FOURCC_ARGS (tag), size);
4438 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4439 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4440 GST_LOG ("Chunk ok");
4441 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4442 GST_DEBUG ("Found sub-index tag");
4443 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4444 /* accept 0 size buffer here */
4445 avi->abort_buffering = FALSE;
4446 GST_DEBUG (" skipping %d bytes for now", size);
4447 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4450 } else if (tag == GST_RIFF_TAG_RIFF) {
4451 /* RIFF tags can appear in ODML files, just jump over them */
4452 if (gst_adapter_available (avi->adapter) >= 12) {
4453 GST_DEBUG ("Found RIFF tag, skipping RIFF header");
4454 gst_adapter_flush (avi->adapter, 12);
4458 } else if (tag == GST_RIFF_TAG_idx1) {
4459 GST_DEBUG ("Found index tag");
4460 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4461 /* accept 0 size buffer here */
4462 avi->abort_buffering = FALSE;
4463 GST_DEBUG (" skipping %d bytes for now", size);
4464 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4467 } else if (tag == GST_RIFF_TAG_LIST) {
4468 /* movi chunks might be grouped in rec list */
4469 if (gst_adapter_available (avi->adapter) >= 12) {
4470 GST_DEBUG ("Found LIST tag, skipping LIST header");
4471 gst_adapter_flush (avi->adapter, 12);
4475 } else if (tag == GST_RIFF_TAG_JUNK) {
4476 /* rec list might contain JUNK chunks */
4477 GST_DEBUG ("Found JUNK tag");
4478 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4479 /* accept 0 size buffer here */
4480 avi->abort_buffering = FALSE;
4481 GST_DEBUG (" skipping %d bytes for now", size);
4482 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4486 GST_DEBUG ("No more stream chunks, send EOS");
4487 avi->have_eos = TRUE;
4488 return GST_FLOW_UNEXPECTED;
4491 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4492 /* supposedly one hopes to catch a nicer chunk later on ... */
4493 /* FIXME ?? give up here rather than possibly ending up going
4494 * through the whole file */
4495 if (avi->abort_buffering) {
4496 avi->abort_buffering = FALSE;
4497 gst_adapter_flush (avi->adapter, 8);
4501 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4502 GST_FOURCC_ARGS (tag), size);
4504 stream_nr = CHUNKID_TO_STREAMNR (tag);
4506 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4508 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4509 stream_nr, GST_FOURCC_ARGS (tag));
4510 avi->offset += 8 + GST_ROUND_UP_2 (size);
4511 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4513 GstAviStream *stream;
4514 GstClockTime next_ts = 0;
4518 gst_adapter_flush (avi->adapter, 8);
4521 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
4522 /* patch the size */
4523 GST_BUFFER_SIZE (buf) = size;
4524 offset = avi->offset;
4525 avi->offset += 8 + GST_ROUND_UP_2 (size);
4527 stream = &avi->stream[stream_nr];
4529 /* set delay (if any)
4530 if (stream->strh->init_frames == stream->current_frame &&
4532 stream->delay = next_ts;
4535 /* parsing of corresponding header may have failed */
4536 if (G_UNLIKELY (!stream->pad)) {
4537 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
4538 GST_FOURCC_ARGS (tag));
4539 gst_buffer_unref (buf);
4541 GstClockTime dur_ts = 0;
4543 /* get time of this buffer */
4544 gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
4545 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4548 gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
4550 /* increment our positions */
4551 stream->current_entry++;
4552 stream->current_total += size;
4554 /* invert the picture if needed */
4555 buf = gst_avi_demux_invert (stream, buf);
4557 gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
4558 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4561 GST_BUFFER_TIMESTAMP (buf) = next_ts;
4562 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
4563 if (stream->strh->type == GST_RIFF_FCC_vids) {
4564 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
4565 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
4567 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4568 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
4571 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4572 GST_DEBUG_OBJECT (avi,
4573 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
4574 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
4575 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
4576 GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_OFFSET (buf),
4577 size, GST_PAD_NAME (stream->pad));
4579 /* update current position in the segment */
4580 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
4582 /* mark discont when pending */
4583 if (G_UNLIKELY (stream->discont)) {
4584 GST_DEBUG_OBJECT (avi, "Setting DISCONT");
4585 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4586 stream->discont = FALSE;
4588 res = gst_pad_push (stream->pad, buf);
4591 res = gst_avi_demux_combine_flows (avi, stream, res);
4592 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4593 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
4606 GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
4607 gst_format_get_name (format));
4608 res = GST_FLOW_ERROR;
4614 * Send pending tags.
4617 push_tag_lists (GstAviDemux * avi)
4625 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
4627 for (i = 0; i < avi->num_streams; i++) {
4628 GstAviStream *stream = &avi->stream[i];
4629 GstPad *pad = stream->pad;
4631 tags = stream->taglist;
4634 GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
4636 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (avi), pad, tags);
4637 stream->taglist = NULL;
4641 if (!(tags = avi->globaltags))
4642 tags = gst_tag_list_new ();
4644 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
4645 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
4647 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
4648 gst_element_found_tags (GST_ELEMENT_CAST (avi), tags);
4649 avi->globaltags = NULL;
4650 avi->got_tags = FALSE;
4654 gst_avi_demux_loop (GstPad * pad)
4657 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4659 switch (avi->state) {
4660 case GST_AVI_DEMUX_START:
4661 res = gst_avi_demux_stream_init_pull (avi);
4662 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4663 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4666 avi->state = GST_AVI_DEMUX_HEADER;
4668 case GST_AVI_DEMUX_HEADER:
4669 res = gst_avi_demux_stream_header_pull (avi);
4670 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4671 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4674 avi->state = GST_AVI_DEMUX_MOVI;
4676 case GST_AVI_DEMUX_MOVI:
4677 if (G_UNLIKELY (avi->seg_event)) {
4678 gst_avi_demux_push_event (avi, avi->seg_event);
4679 avi->seg_event = NULL;
4681 if (G_UNLIKELY (avi->got_tags)) {
4682 push_tag_lists (avi);
4684 /* process each index entry in turn */
4685 res = gst_avi_demux_loop_data (avi);
4687 /* pause when error */
4688 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4689 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
4694 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
4695 res = GST_FLOW_ERROR;
4703 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
4704 avi->segment_running = FALSE;
4705 gst_pad_pause_task (avi->sinkpad);
4707 if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
4708 gboolean push_eos = TRUE;
4710 if (res == GST_FLOW_UNEXPECTED) {
4711 /* handle end-of-stream/segment */
4712 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4715 if ((stop = avi->segment.stop) == -1)
4716 stop = avi->segment.duration;
4718 GST_INFO_OBJECT (avi, "sending segment_done");
4720 gst_element_post_message
4721 (GST_ELEMENT_CAST (avi),
4722 gst_message_new_segment_done (GST_OBJECT_CAST (avi),
4723 GST_FORMAT_TIME, stop));
4727 /* for fatal errors we post an error message */
4728 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
4729 (_("Internal data stream error.")),
4730 ("streaming stopped, reason %s", gst_flow_get_name (res)));
4733 GST_INFO_OBJECT (avi, "sending eos");
4734 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
4735 (res == GST_FLOW_UNEXPECTED)) {
4736 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
4737 (NULL), ("got eos but no streams (yet)"));
4744 static GstFlowReturn
4745 gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
4748 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4751 if (GST_BUFFER_IS_DISCONT (buf)) {
4752 GST_DEBUG_OBJECT (avi, "got DISCONT");
4753 gst_adapter_clear (avi->adapter);
4754 /* mark all streams DISCONT */
4755 for (i = 0; i < avi->num_streams; i++)
4756 avi->stream[i].discont = TRUE;
4759 GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
4760 gst_adapter_push (avi->adapter, buf);
4762 switch (avi->state) {
4763 case GST_AVI_DEMUX_START:
4764 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
4765 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4769 case GST_AVI_DEMUX_HEADER:
4770 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
4771 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4775 case GST_AVI_DEMUX_MOVI:
4776 if (G_UNLIKELY (avi->seg_event)) {
4777 gst_avi_demux_push_event (avi, avi->seg_event);
4778 avi->seg_event = NULL;
4780 if (G_UNLIKELY (avi->got_tags)) {
4781 push_tag_lists (avi);
4783 res = gst_avi_demux_stream_data (avi);
4786 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
4787 ("Illegal internal state"));
4788 res = GST_FLOW_ERROR;
4792 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
4793 gst_flow_get_name (res));
4795 if (G_UNLIKELY (avi->abort_buffering)) {
4796 avi->abort_buffering = FALSE;
4797 res = GST_FLOW_ERROR;
4798 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
4805 gst_avi_demux_sink_activate (GstPad * sinkpad)
4807 if (gst_pad_check_pull_range (sinkpad)) {
4808 GST_DEBUG ("going to pull mode");
4809 return gst_pad_activate_pull (sinkpad, TRUE);
4811 GST_DEBUG ("going to push (streaming) mode");
4812 return gst_pad_activate_push (sinkpad, TRUE);
4817 gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
4819 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
4822 avi->segment_running = TRUE;
4823 avi->streaming = FALSE;
4824 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4827 avi->segment_running = FALSE;
4828 return gst_pad_stop_task (sinkpad);
4833 gst_avi_demux_activate_push (GstPad * pad, gboolean active)
4835 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
4838 GST_DEBUG ("avi: activating push/chain function");
4839 avi->streaming = TRUE;
4841 /* create index for some push based seeking if not provided */
4842 GST_OBJECT_LOCK (avi);
4843 if (!avi->element_index) {
4844 GST_DEBUG_OBJECT (avi, "creating index");
4845 avi->element_index = gst_index_factory_make ("memindex");
4847 GST_OBJECT_UNLOCK (avi);
4848 /* object lock might be taken again */
4849 gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (avi),
4853 GST_DEBUG ("avi: deactivating push/chain function");
4860 gst_avi_demux_set_index (GstElement * element, GstIndex * index)
4862 GstAviDemux *avi = GST_AVI_DEMUX (element);
4864 GST_OBJECT_LOCK (avi);
4865 if (avi->element_index)
4866 gst_object_unref (avi->element_index);
4868 avi->element_index = gst_object_ref (index);
4870 avi->element_index = NULL;
4872 GST_OBJECT_UNLOCK (avi);
4873 /* object lock might be taken again */
4875 gst_index_get_writer_id (index, GST_OBJECT_CAST (element), &avi->index_id);
4876 GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
4880 gst_avi_demux_get_index (GstElement * element)
4882 GstIndex *result = NULL;
4883 GstAviDemux *avi = GST_AVI_DEMUX (element);
4885 GST_OBJECT_LOCK (avi);
4886 if (avi->element_index)
4887 result = gst_object_ref (avi->element_index);
4888 GST_OBJECT_UNLOCK (avi);
4890 GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
4895 static GstStateChangeReturn
4896 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
4898 GstStateChangeReturn ret;
4899 GstAviDemux *avi = GST_AVI_DEMUX (element);
4901 switch (transition) {
4902 case GST_STATE_CHANGE_READY_TO_PAUSED:
4903 avi->streaming = FALSE;
4904 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
4910 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
4911 if (ret == GST_STATE_CHANGE_FAILURE)
4914 switch (transition) {
4915 case GST_STATE_CHANGE_PAUSED_TO_READY:
4916 gst_avi_demux_reset (avi);