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 (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 (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->seek_event) {
283 gst_event_unref (avi->seek_event);
284 avi->seek_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)"));
775 res = gst_pad_event_default (pad, event);
779 gst_object_unref (avi);
785 gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
788 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
790 GST_DEBUG_OBJECT (avi,
791 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
793 switch (GST_EVENT_TYPE (event)) {
795 /* handle seeking only in pull mode */
796 if (!avi->streaming) {
797 res = gst_avi_demux_handle_seek (avi, pad, event);
799 res = gst_avi_demux_handle_seek_push (avi, pad, event);
801 gst_event_unref (event);
804 case GST_EVENT_NAVIGATION:
806 gst_event_unref (event);
809 res = gst_pad_event_default (pad, event);
813 gst_object_unref (avi);
818 /* streaming helper (push) */
821 * gst_avi_demux_peek_chunk_info:
823 * @tag: holder for tag
824 * @size: holder for tag size
826 * Peek next chunk info (tag and size)
828 * Returns: TRUE when one chunk info has been got
831 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
833 const guint8 *data = NULL;
835 if (gst_adapter_available (avi->adapter) < 8)
838 data = gst_adapter_peek (avi->adapter, 8);
839 *tag = GST_READ_UINT32_LE (data);
840 *size = GST_READ_UINT32_LE (data + 4);
846 * gst_avi_demux_peek_chunk:
848 * @tag: holder for tag
849 * @size: holder for tag size
851 * Peek enough data for one full chunk
853 * Returns: %TRUE when one chunk has been got
856 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
858 guint32 peek_size = 0;
861 if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
864 /* size 0 -> empty data buffer would surprise most callers,
865 * large size -> do not bother trying to squeeze that into adapter,
866 * so we throw poor man's exception, which can be caught if caller really
867 * wants to handle 0 size chunk */
868 if (!(*size) || (*size) >= (1 << 30))
871 peek_size = (*size + 1) & ~1;
872 available = gst_adapter_available (avi->adapter);
874 GST_DEBUG_OBJECT (avi,
875 "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
876 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
878 if (available < (8 + peek_size))
886 GST_INFO_OBJECT (avi, "Failed to peek");
891 GST_INFO_OBJECT (avi,
892 "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
893 GST_FOURCC_ARGS (*tag));
894 /* chain should give up */
895 avi->abort_buffering = TRUE;
900 GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
901 available, 8 + peek_size);
909 * gst_avi_demux_parse_file_header:
910 * @element: caller element (used for errors/debug).
911 * @buf: input data to be used for parsing.
913 * "Open" a RIFF/AVI file. The buffer should be at least 12
914 * bytes long. Takes ownership of @buf.
916 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
917 * Throws an error, caller should error out (fatal).
920 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
925 stamp = gst_util_get_timestamp ();
927 /* riff_parse posts an error */
928 if (!gst_riff_parse_file_header (element, buf, &doctype))
931 if (doctype != GST_RIFF_RIFF_AVI)
934 stamp = gst_util_get_timestamp () - stamp;
935 GST_DEBUG_OBJECT (element, "header parsing took %" GST_TIME_FORMAT,
936 GST_TIME_ARGS (stamp));
943 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
944 ("File is not an AVI file: %" GST_FOURCC_FORMAT,
945 GST_FOURCC_ARGS (doctype)));
951 * Read AVI file tag when streaming
954 gst_avi_demux_stream_init_push (GstAviDemux * avi)
956 if (gst_adapter_available (avi->adapter) >= 12) {
959 tmp = gst_adapter_take_buffer (avi->adapter, 12);
961 GST_DEBUG ("Parsing avi header");
962 if (!gst_avi_demux_parse_file_header (GST_ELEMENT (avi), tmp)) {
963 return GST_FLOW_ERROR;
965 GST_DEBUG ("header ok");
968 avi->state = GST_AVI_DEMUX_HEADER;
977 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
980 GstBuffer *buf = NULL;
982 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
983 if (res != GST_FLOW_OK)
985 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
995 GST_DEBUG_OBJECT (avi, "error parsing file header");
996 return GST_FLOW_ERROR;
1000 /* AVI header handling */
1003 * gst_avi_demux_parse_avih:
1004 * @element: caller element (used for errors/debug).
1005 * @buf: input data to be used for parsing.
1006 * @avih: pointer to structure (filled in by function) containing
1007 * stream information (such as flags, number of streams, etc.).
1009 * Read 'avih' header. Discards buffer after use.
1011 * Returns: TRUE on success, FALSE otherwise. Throws an error if
1012 * the header is invalid. The caller should error out
1016 gst_avi_demux_parse_avih (GstElement * element,
1017 GstBuffer * buf, gst_riff_avih ** _avih)
1019 gst_riff_avih *avih;
1020 GstAviDemux *avi = GST_AVI_DEMUX (element);
1025 if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
1026 goto avih_too_small;
1028 avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1030 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1031 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
1032 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
1033 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
1034 avih->flags = GUINT32_FROM_LE (avih->flags);
1035 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
1036 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
1037 avih->streams = GUINT32_FROM_LE (avih->streams);
1038 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
1039 avih->width = GUINT32_FROM_LE (avih->width);
1040 avih->height = GUINT32_FROM_LE (avih->height);
1041 avih->scale = GUINT32_FROM_LE (avih->scale);
1042 avih->rate = GUINT32_FROM_LE (avih->rate);
1043 avih->start = GUINT32_FROM_LE (avih->start);
1044 avih->length = GUINT32_FROM_LE (avih->length);
1048 GST_INFO_OBJECT (element, "avih tag found:");
1049 GST_INFO_OBJECT (element, " us_frame %u", avih->us_frame);
1050 GST_INFO_OBJECT (element, " max_bps %u", avih->max_bps);
1051 GST_INFO_OBJECT (element, " pad_gran %u", avih->pad_gran);
1052 GST_INFO_OBJECT (element, " flags 0x%08x", avih->flags);
1053 GST_INFO_OBJECT (element, " tot_frames %u", avih->tot_frames);
1054 GST_INFO_OBJECT (element, " init_frames %u", avih->init_frames);
1055 GST_INFO_OBJECT (element, " streams %u", avih->streams);
1056 GST_INFO_OBJECT (element, " bufsize %u", avih->bufsize);
1057 GST_INFO_OBJECT (element, " width %u", avih->width);
1058 GST_INFO_OBJECT (element, " height %u", avih->height);
1059 GST_INFO_OBJECT (element, " scale %u", avih->scale);
1060 GST_INFO_OBJECT (element, " rate %u", avih->rate);
1061 GST_INFO_OBJECT (element, " start %u", avih->start);
1062 GST_INFO_OBJECT (element, " length %u", avih->length);
1065 gst_buffer_unref (buf);
1067 if (avih->us_frame != 0 && avih->tot_frames != 0)
1069 (guint64) avih->us_frame * (guint64) avih->tot_frames * 1000;
1071 avi->duration = GST_CLOCK_TIME_NONE;
1073 GST_INFO_OBJECT (element, " header duration %" GST_TIME_FORMAT,
1074 GST_TIME_ARGS (avi->duration));
1081 GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL), ("No buffer"));
1086 GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL),
1087 ("Too small avih (%d available, %d needed)",
1088 GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
1089 gst_buffer_unref (buf);
1095 * gst_avi_demux_parse_superindex:
1096 * @avi: caller element (used for debugging/errors).
1097 * @buf: input data to use for parsing.
1098 * @locations: locations in the file (byte-offsets) that contain
1099 * the actual indexes (see get_avi_demux_parse_subindex()).
1100 * The array ends with GST_BUFFER_OFFSET_NONE.
1102 * Reads superindex (openDML-2 spec stuff) from the provided data.
1104 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
1105 * on error, but they are not fatal.
1108 gst_avi_demux_parse_superindex (GstAviDemux * avi,
1109 GstBuffer * buf, guint64 ** _indexes)
1119 size = buf ? GST_BUFFER_SIZE (buf) : 0;
1123 data = GST_BUFFER_DATA (buf);
1125 /* check type of index. The opendml2 specs state that
1126 * there should be 4 dwords per array entry. Type can be
1127 * either frame or field (and we don't care). */
1128 if (GST_READ_UINT16_LE (data) != 4 ||
1129 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
1130 GST_WARNING_OBJECT (avi,
1131 "Superindex for stream has unexpected "
1132 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1133 GST_READ_UINT16_LE (data), data[2], data[3]);
1134 bpe = GST_READ_UINT16_LE (data) * 4;
1136 num = GST_READ_UINT32_LE (&data[4]);
1138 GST_DEBUG_OBJECT (avi, "got %d indexes", num);
1140 indexes = g_new (guint64, num + 1);
1141 for (i = 0; i < num; i++) {
1142 if (size < 24 + bpe * (i + 1))
1144 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1145 GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]);
1147 indexes[i] = GST_BUFFER_OFFSET_NONE;
1148 *_indexes = indexes;
1150 gst_buffer_unref (buf);
1157 GST_ERROR_OBJECT (avi,
1158 "Not enough data to parse superindex (%d available, 24 needed)", size);
1160 gst_buffer_unref (buf);
1165 /* add an entry to the index of a stream. @num should be an estimate of the
1166 * total amount of index entries for all streams and is used to dynamically
1167 * allocate memory for the index entries. */
1168 static inline gboolean
1169 gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream,
1170 guint num, GstAviIndexEntry * entry)
1172 /* ensure index memory */
1173 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
1174 guint idx_max = stream->idx_max;
1175 GstAviIndexEntry *new_idx;
1177 /* we need to make some more room */
1179 /* initial size guess, assume each stream has an equal amount of entries,
1180 * overshoot with at least 8K */
1181 idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
1183 idx_max += 8192 / sizeof (GstAviIndexEntry);
1184 GST_DEBUG_OBJECT (avi, "expanded index from %u to %u",
1185 stream->idx_max, idx_max);
1187 new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max);
1188 /* out of memory, if this fails stream->index is untouched. */
1189 if (G_UNLIKELY (!new_idx))
1192 stream->index = new_idx;
1193 stream->idx_max = idx_max;
1196 /* update entry total and stream stats. The entry total can be converted to
1197 * the timestamp of the entry easily. */
1198 if (stream->strh->type == GST_RIFF_FCC_auds) {
1201 if (stream->is_vbr) {
1202 entry->total = stream->total_blocks;
1204 entry->total = stream->total_bytes;
1206 blockalign = stream->strf.auds->blockalign;
1208 stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign);
1210 stream->total_blocks++;
1212 if (stream->is_vbr) {
1213 entry->total = stream->idx_n;
1215 entry->total = stream->total_bytes;
1218 stream->total_bytes += entry->size;
1219 if (ENTRY_IS_KEYFRAME (entry))
1220 stream->n_keyframes++;
1223 GST_LOG_OBJECT (avi,
1224 "Adding stream %u, index entry %d, kf %d, size %u "
1225 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num,
1226 stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset,
1228 stream->index[stream->idx_n++] = *entry;
1233 /* given @entry_n in @stream, calculate info such as timestamps and
1234 * offsets for the entry. */
1236 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1237 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1238 guint64 * offset, guint64 * offset_end)
1240 GstAviIndexEntry *entry;
1242 entry = &stream->index[entry_n];
1244 if (stream->is_vbr) {
1245 /* VBR stream next timestamp */
1246 if (stream->strh->type == GST_RIFF_FCC_auds) {
1249 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
1251 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1256 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
1258 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
1261 } else if (stream->strh->type == GST_RIFF_FCC_auds) {
1262 /* constant rate stream */
1265 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
1267 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
1268 entry->total + entry->size);
1270 if (stream->strh->type == GST_RIFF_FCC_vids) {
1271 /* video offsets are the frame number */
1275 *offset_end = entry_n + 1;
1277 /* no offsets for audio */
1285 /* collect and debug stats about the indexes for all streams.
1286 * This method is also responsible for filling in the stream duration
1287 * as measured by the amount of index entries.
1289 * Returns TRUE if the index is not empty, else FALSE */
1291 gst_avi_demux_do_index_stats (GstAviDemux * avi)
1293 guint total_idx = 0;
1295 #ifndef GST_DISABLE_GST_DEBUG
1296 guint total_max = 0;
1299 /* get stream stats now */
1300 for (i = 0; i < avi->num_streams; i++) {
1301 GstAviStream *stream;
1303 if (G_UNLIKELY (!(stream = &avi->stream[i])))
1305 if (G_UNLIKELY (!stream->strh))
1307 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
1310 /* we interested in the end_ts of the last entry, which is the total
1311 * duration of this stream */
1312 gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1,
1313 NULL, &stream->idx_duration, NULL, NULL);
1315 total_idx += stream->idx_n;
1316 #ifndef GST_DISABLE_GST_DEBUG
1317 total_max += stream->idx_max;
1319 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
1320 "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u",
1321 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
1322 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
1323 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
1324 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
1326 total_idx *= sizeof (GstAviIndexEntry);
1327 #ifndef GST_DISABLE_GST_DEBUG
1328 total_max *= sizeof (GstAviIndexEntry);
1330 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
1331 total_max, total_idx, total_max - total_idx);
1333 if (total_idx == 0) {
1334 GST_WARNING_OBJECT (avi, "Index is empty !");
1341 * gst_avi_demux_parse_subindex:
1343 * @buf: input data to use for parsing.
1344 * @stream: stream context.
1345 * @entries_list: a list (returned by the function) containing all the
1346 * indexes parsed in this specific subindex. The first
1347 * entry is also a pointer to allocated memory that needs
1348 * to be free´ed. May be NULL if no supported indexes were
1351 * Reads superindex (openDML-2 spec stuff) from the provided data.
1352 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1354 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1355 * throw an error, caller should bail out asap.
1358 gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream,
1370 size = GST_BUFFER_SIZE (buf);
1376 data = GST_BUFFER_DATA (buf);
1378 /* We don't support index-data yet */
1380 goto not_implemented;
1382 /* check type of index. The opendml2 specs state that
1383 * there should be 4 dwords per array entry. Type can be
1384 * either frame or field (and we don't care). */
1385 bpe = (data[2] & 0x01) ? 12 : 8;
1386 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1387 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1388 GST_WARNING_OBJECT (avi,
1389 "Superindex for stream %d has unexpected "
1390 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1391 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1392 bpe = GST_READ_UINT16_LE (data) * 4;
1394 num = GST_READ_UINT32_LE (&data[4]);
1395 baseoff = GST_READ_UINT64_LE (&data[12]);
1397 /* If there's nothing, just return ! */
1401 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1403 for (i = 0; i < num; i++) {
1404 GstAviIndexEntry entry;
1406 if (size < 24 + bpe * (i + 1))
1409 /* fill in offset and size. offset contains the keyframe flag in the
1411 entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1412 entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1414 if (stream->strh->type == GST_RIFF_FCC_auds) {
1415 /* all audio frames are keyframes */
1416 ENTRY_SET_KEYFRAME (&entry);
1418 /* else read flags */
1419 entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME;
1421 entry.size &= ~0x80000000;
1424 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
1427 gst_buffer_unref (buf);
1434 GST_ERROR_OBJECT (avi,
1435 "Not enough data to parse subindex (%d available, 24 needed)", size);
1436 gst_buffer_unref (buf);
1437 return TRUE; /* continue */
1441 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1442 ("Subindex-is-data is not implemented"));
1443 gst_buffer_unref (buf);
1448 GST_DEBUG_OBJECT (avi, "the index is empty");
1449 gst_buffer_unref (buf);
1454 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1455 ("Cannot allocate memory for %u*%u=%u bytes",
1456 (guint) sizeof (GstAviIndexEntry), num,
1457 (guint) sizeof (GstAviIndexEntry) * num));
1458 gst_buffer_unref (buf);
1465 * Read AVI index when streaming
1468 gst_avi_demux_read_subindexes_push (GstAviDemux * avi)
1470 guint32 tag = 0, size;
1471 GstBuffer *buf = NULL;
1474 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1476 for (n = 0; n < avi->num_streams; n++) {
1477 GstAviStream *stream = &avi->stream[n];
1479 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1480 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1482 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1483 '0' + stream->num % 10)) &&
1484 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1485 '0' + stream->num % 10, 'i', 'x'))) {
1486 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1487 GST_FOURCC_ARGS (tag));
1491 avi->offset += 8 + GST_ROUND_UP_2 (size);
1493 buf = gst_buffer_new ();
1494 GST_BUFFER_DATA (buf) = gst_adapter_take (avi->adapter, size);
1495 GST_BUFFER_SIZE (buf) = size;
1497 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1501 g_free (stream->indexes);
1502 stream->indexes = NULL;
1504 /* get stream stats now */
1505 avi->have_index = gst_avi_demux_do_index_stats (avi);
1513 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi)
1519 GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams);
1521 for (n = 0; n < avi->num_streams; n++) {
1522 GstAviStream *stream = &avi->stream[n];
1524 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1525 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad,
1526 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1528 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1529 '0' + stream->num % 10)) &&
1530 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1531 '0' + stream->num % 10, 'i', 'x'))) {
1532 /* Some ODML files (created by god knows what muxer) have a ##ix format
1533 * instead of the 'official' ix##. They are still valid though. */
1534 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1535 GST_FOURCC_ARGS (tag));
1536 gst_buffer_unref (buf);
1540 if (!gst_avi_demux_parse_subindex (avi, stream, buf))
1544 g_free (stream->indexes);
1545 stream->indexes = NULL;
1547 /* get stream stats now */
1548 avi->have_index = gst_avi_demux_do_index_stats (avi);
1552 * gst_avi_demux_riff_parse_vprp:
1553 * @element: caller element (used for debugging/error).
1554 * @buf: input data to be used for parsing, stripped from header.
1555 * @vprp: a pointer (returned by this function) to a filled-in vprp
1556 * structure. Caller should free it.
1558 * Parses a video stream´s vprp. This function takes ownership of @buf.
1560 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1561 * should be skipped on error, but it is not fatal.
1564 gst_avi_demux_riff_parse_vprp (GstElement * element,
1565 GstBuffer * buf, gst_riff_vprp ** _vprp)
1567 gst_riff_vprp *vprp;
1570 g_return_val_if_fail (buf != NULL, FALSE);
1571 g_return_val_if_fail (_vprp != NULL, FALSE);
1573 if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1576 vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1578 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1579 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1580 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1581 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1582 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1583 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1584 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1585 vprp->width = GUINT32_FROM_LE (vprp->width);
1586 vprp->height = GUINT32_FROM_LE (vprp->height);
1587 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1591 /* calculate fields based on size */
1592 k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
1594 if (vprp->fields > k) {
1595 GST_WARNING_OBJECT (element,
1596 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1599 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1600 GST_WARNING_OBJECT (element,
1601 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1602 GST_RIFF_VPRP_VIDEO_FIELDS);
1603 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1605 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1606 for (k = 0; k < vprp->fields; k++) {
1607 gst_riff_vprp_video_field_desc *fd;
1609 fd = &vprp->field_info[k];
1610 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1611 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1612 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1613 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1614 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1615 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1616 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1617 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1622 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1623 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1624 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1625 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1626 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1627 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1628 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1629 vprp->aspect & 0xffff);
1630 GST_INFO_OBJECT (element, " width %d", vprp->width);
1631 GST_INFO_OBJECT (element, " height %d", vprp->height);
1632 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1633 for (k = 0; k < vprp->fields; k++) {
1634 gst_riff_vprp_video_field_desc *fd;
1636 fd = &(vprp->field_info[k]);
1637 GST_INFO_OBJECT (element, " field %u description:", k);
1638 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1639 fd->compressed_bm_height);
1640 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1641 fd->compressed_bm_width);
1642 GST_INFO_OBJECT (element, " valid_bm_height %d",
1643 fd->valid_bm_height);
1644 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1645 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1646 fd->valid_bm_x_offset);
1647 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1648 fd->valid_bm_y_offset);
1649 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1650 fd->video_x_t_offset);
1651 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1654 gst_buffer_unref (buf);
1663 GST_ERROR_OBJECT (element,
1664 "Too small vprp (%d available, at least %d needed)",
1665 GST_BUFFER_SIZE (buf),
1666 (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1667 gst_buffer_unref (buf);
1673 gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force)
1677 GST_DEBUG_OBJECT (avi, "force : %d", force);
1679 for (i = 0; i < avi->num_streams; i++) {
1680 GstAviStream *stream = &avi->stream[i];
1682 if (force || stream->idx_n != 0) {
1683 GST_LOG_OBJECT (avi, "Added pad %s with caps %" GST_PTR_FORMAT,
1684 GST_PAD_NAME (stream->pad), GST_PAD_CAPS (stream->pad));
1685 gst_element_add_pad ((GstElement *) avi, stream->pad);
1686 stream->exposed = TRUE;
1687 if (avi->main_stream == -1)
1688 avi->main_stream = i;
1690 GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it",
1692 gst_avi_demux_reset_stream (avi, stream);
1698 * gst_avi_demux_parse_stream:
1699 * @avi: calling element (used for debugging/errors).
1700 * @buf: input buffer used to parse the stream.
1702 * Parses all subchunks in a strl chunk (which defines a single
1703 * stream). Discards the buffer after use. This function will
1704 * increment the stream counter internally.
1706 * Returns: whether the stream was identified successfully.
1707 * Errors are not fatal. It does indicate the stream
1711 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1713 GstAviStream *stream;
1714 GstElementClass *klass;
1715 GstPadTemplate *templ;
1716 GstBuffer *sub = NULL;
1719 gchar *codec_name = NULL, *padname = NULL;
1720 const gchar *tag_name;
1721 GstCaps *caps = NULL;
1723 GstElement *element;
1724 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1725 gst_riff_vprp *vprp = NULL;
1727 element = GST_ELEMENT_CAST (avi);
1729 GST_DEBUG_OBJECT (avi, "Parsing stream");
1731 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1732 GST_WARNING_OBJECT (avi,
1733 "maximum no of streams (%d) exceeded, ignoring stream",
1734 GST_AVI_DEMUX_MAX_STREAMS);
1735 gst_buffer_unref (buf);
1736 /* not a fatal error, let's say */
1740 stream = &avi->stream[avi->num_streams];
1742 /* initial settings */
1743 stream->idx_duration = GST_CLOCK_TIME_NONE;
1744 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1745 stream->duration = GST_CLOCK_TIME_NONE;
1747 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1748 /* sub can be NULL if the chunk is empty */
1750 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1751 GST_FOURCC_ARGS (tag));
1755 case GST_RIFF_TAG_strh:
1757 gst_riff_strh *strh;
1760 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1763 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1764 /* ownership given away */
1766 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1770 strh = stream->strh;
1771 /* sanity check; stream header frame rate matches global header
1773 if (stream->strh->type == GST_RIFF_FCC_vids) {
1775 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1777 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1778 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1779 "frame duration = %d ms", strh->rate, strh->scale,
1780 (gint) (s_dur / GST_MSECOND));
1781 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1782 strh->rate = GST_SECOND / GST_USECOND;
1783 strh->scale = h_dur / GST_USECOND;
1784 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1785 strh->rate, strh->scale);
1788 /* determine duration as indicated by header */
1789 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1790 strh->scale, GST_SECOND, (guint64) strh->rate);
1791 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1792 GST_TIME_ARGS (stream->hdr_duration));
1793 if (stream->hdr_duration == 0)
1794 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1799 case GST_RIFF_TAG_strf:
1801 gboolean res = FALSE;
1804 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
1808 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
1811 switch (stream->strh->type) {
1812 case GST_RIFF_FCC_vids:
1813 stream->is_vbr = TRUE;
1814 res = gst_riff_parse_strf_vids (element, sub,
1815 &stream->strf.vids, &stream->extradata);
1817 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
1819 case GST_RIFF_FCC_auds:
1820 stream->is_vbr = (stream->strh->samplesize == 0)
1821 && stream->strh->scale > 1;
1823 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
1824 &stream->extradata);
1826 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
1827 stream->is_vbr, res);
1829 case GST_RIFF_FCC_iavs:
1830 stream->is_vbr = TRUE;
1831 res = gst_riff_parse_strf_iavs (element, sub,
1832 &stream->strf.iavs, &stream->extradata);
1834 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
1836 case GST_RIFF_FCC_txts:
1837 /* nothing to parse here */
1838 stream->is_vbr = (stream->strh->samplesize == 0)
1839 && (stream->strh->scale > 1);
1843 GST_ERROR_OBJECT (avi,
1844 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
1845 GST_FOURCC_ARGS (stream->strh->type));
1849 gst_buffer_unref (sub);
1857 case GST_RIFF_TAG_vprp:
1860 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
1864 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
1868 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
1872 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
1873 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
1874 /* not considered fatal */
1882 case GST_RIFF_TAG_strd:
1883 if (stream->initdata)
1884 gst_buffer_unref (stream->initdata);
1885 stream->initdata = sub;
1888 case GST_RIFF_TAG_strn:
1889 g_free (stream->name);
1892 g_strndup ((gchar *) GST_BUFFER_DATA (sub),
1893 (gsize) GST_BUFFER_SIZE (sub));
1894 gst_buffer_unref (sub);
1897 stream->name = g_strdup ("");
1899 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
1902 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
1903 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
1904 '0' + avi->num_streams % 10)) {
1905 g_free (stream->indexes);
1906 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
1907 stream->superindex = TRUE;
1911 GST_WARNING_OBJECT (avi,
1912 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
1913 GST_FOURCC_ARGS (tag));
1915 case GST_RIFF_TAG_JUNK:
1919 gst_buffer_unref (sub);
1925 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
1930 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
1934 /* get class to figure out the template */
1935 klass = GST_ELEMENT_GET_CLASS (avi);
1937 /* we now have all info, let´s set up a pad and a caps and be done */
1938 /* create stream name + pad */
1939 switch (stream->strh->type) {
1940 case GST_RIFF_FCC_vids:{
1943 fourcc = (stream->strf.vids->compression) ?
1944 stream->strf.vids->compression : stream->strh->fcc_handler;
1945 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
1946 templ = gst_element_class_get_pad_template (klass, "video_%02d");
1947 caps = gst_riff_create_video_caps (fourcc, stream->strh,
1948 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
1950 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
1951 GST_TYPE_FOURCC, fourcc, NULL);
1952 } else if (got_vprp && vprp) {
1953 guint32 aspect_n, aspect_d;
1956 aspect_n = vprp->aspect >> 16;
1957 aspect_d = vprp->aspect & 0xffff;
1958 /* calculate the pixel aspect ratio using w/h and aspect ratio */
1959 n = aspect_n * stream->strf.vids->height;
1960 d = aspect_d * stream->strf.vids->width;
1962 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
1964 /* very local, not needed elsewhere */
1968 tag_name = GST_TAG_VIDEO_CODEC;
1969 avi->num_v_streams++;
1972 case GST_RIFF_FCC_auds:{
1973 padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
1974 templ = gst_element_class_get_pad_template (klass, "audio_%02d");
1975 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
1976 stream->strh, stream->strf.auds, stream->extradata,
1977 stream->initdata, &codec_name);
1979 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
1980 G_TYPE_INT, stream->strf.auds->format, NULL);
1982 tag_name = GST_TAG_AUDIO_CODEC;
1983 avi->num_a_streams++;
1986 case GST_RIFF_FCC_iavs:{
1987 guint32 fourcc = stream->strh->fcc_handler;
1989 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
1990 templ = gst_element_class_get_pad_template (klass, "video_%02d");
1991 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
1992 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
1994 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
1995 GST_TYPE_FOURCC, fourcc, NULL);
1997 tag_name = GST_TAG_VIDEO_CODEC;
1998 avi->num_v_streams++;
2001 case GST_RIFF_FCC_txts:{
2002 padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
2003 templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
2004 caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
2006 avi->num_t_streams++;
2010 g_assert_not_reached ();
2013 /* no caps means no stream */
2015 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
2019 GST_DEBUG_OBJECT (element, "codec-name=%s",
2020 (codec_name ? codec_name : "NULL"));
2021 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
2023 /* set proper settings and add it */
2025 gst_object_unref (stream->pad);
2026 pad = stream->pad = gst_pad_new_from_template (templ, padname);
2029 gst_pad_use_fixed_caps (pad);
2031 gst_pad_set_formats_function (pad,
2032 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
2033 gst_pad_set_event_mask_function (pad,
2034 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
2036 gst_pad_set_event_function (pad,
2037 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
2038 gst_pad_set_query_type_function (pad,
2039 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
2040 gst_pad_set_query_function (pad,
2041 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
2043 gst_pad_set_convert_function (pad,
2044 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
2047 if (avi->element_index)
2048 gst_index_get_writer_id (avi->element_index, GST_OBJECT (stream->pad),
2051 stream->num = avi->num_streams;
2053 stream->start_entry = 0;
2054 stream->step_entry = 0;
2055 stream->stop_entry = 0;
2057 stream->current_entry = -1;
2058 stream->current_total = 0;
2060 stream->last_flow = GST_FLOW_OK;
2061 stream->discont = TRUE;
2063 stream->total_bytes = 0;
2064 stream->total_blocks = 0;
2065 stream->n_keyframes = 0;
2068 stream->idx_max = 0;
2070 gst_pad_set_element_private (pad, stream);
2073 gst_pad_set_caps (pad, caps);
2074 gst_pad_set_active (pad, TRUE);
2075 gst_caps_unref (caps);
2079 if (!stream->taglist)
2080 stream->taglist = gst_tag_list_new ();
2082 avi->got_tags = TRUE;
2084 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
2086 g_free (codec_name);
2089 gst_buffer_unref (buf);
2096 /* unref any mem that may be in use */
2098 gst_buffer_unref (buf);
2100 gst_buffer_unref (sub);
2102 g_free (codec_name);
2103 gst_avi_demux_reset_stream (avi, stream);
2110 * gst_avi_demux_parse_odml:
2111 * @avi: calling element (used for debug/error).
2112 * @buf: input buffer to be used for parsing.
2114 * Read an openDML-2.0 extension header. Fills in the frame number
2115 * in the avi demuxer object when reading succeeds.
2118 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
2122 GstBuffer *sub = NULL;
2124 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
2127 case GST_RIFF_TAG_dmlh:{
2128 gst_riff_dmlh dmlh, *_dmlh;
2131 /* sub == NULL is possible and means an empty buffer */
2132 size = sub ? GST_BUFFER_SIZE (sub) : 0;
2135 if (size < sizeof (gst_riff_dmlh)) {
2136 GST_ERROR_OBJECT (avi,
2137 "DMLH entry is too small (%d bytes, %d needed)",
2138 size, (int) sizeof (gst_riff_dmlh));
2141 _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
2142 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
2144 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
2147 avi->avih->tot_frames = dmlh.totalframes;
2152 GST_WARNING_OBJECT (avi,
2153 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
2154 GST_FOURCC_ARGS (tag));
2156 case GST_RIFF_TAG_JUNK:
2158 /* skip and move to next chunk */
2160 gst_buffer_unref (sub);
2167 gst_buffer_unref (buf);
2172 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
2174 return stream->idx_n - 1;
2177 /* find a previous entry in the index with the given flags */
2179 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
2180 guint last, gboolean keyframe)
2182 GstAviIndexEntry *entry;
2185 for (i = last; i > 0; i--) {
2186 entry = &stream->index[i - 1];
2187 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2195 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
2196 guint last, gboolean keyframe)
2198 GstAviIndexEntry *entry;
2201 for (i = last + 1; i < stream->idx_n; i++) {
2202 entry = &stream->index[i];
2203 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
2207 return stream->idx_n - 1;
2211 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
2213 if (entry->total < *total)
2215 else if (entry->total > *total)
2221 * gst_avi_demux_index_for_time:
2223 * @stream: the stream
2224 * @time: a time position
2226 * Finds the index entry which time is less or equal than the requested time.
2227 * Try to avoid binary search when we can convert the time to an index
2228 * position directly (for example for video frames with a fixed duration).
2230 * Returns: the found position in the index.
2233 gst_avi_demux_index_for_time (GstAviDemux * avi,
2234 GstAviStream * stream, guint64 time)
2239 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
2241 /* easy (and common) cases */
2242 if (time == 0 || stream->idx_n == 0)
2244 if (time >= stream->idx_duration)
2245 return stream->idx_n - 1;
2247 /* figure out where we need to go. For that we convert the time to an
2248 * index entry or we convert it to a total and then do a binary search. */
2249 if (stream->is_vbr) {
2250 /* VBR stream next timestamp */
2251 if (stream->strh->type == GST_RIFF_FCC_auds) {
2252 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
2254 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
2257 /* constant rate stream */
2258 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
2262 GstAviIndexEntry *entry;
2264 /* no index, find index with binary search on total */
2265 GST_LOG_OBJECT (avi, "binary search for entry with total %"
2266 G_GUINT64_FORMAT, total);
2268 entry = gst_util_array_binary_search (stream->index,
2269 stream->idx_n, sizeof (GstAviIndexEntry),
2270 (GCompareDataFunc) gst_avi_demux_index_entry_search,
2271 GST_SEARCH_MODE_BEFORE, &total, NULL);
2273 if (entry == NULL) {
2274 GST_LOG_OBJECT (avi, "not found, assume index 0");
2277 index = entry - stream->index;
2278 GST_LOG_OBJECT (avi, "found at %u", index);
2281 GST_LOG_OBJECT (avi, "converted time to index %u", index);
2287 static inline GstAviStream *
2288 gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id)
2291 GstAviStream *stream;
2293 /* get the stream for this entry */
2294 stream_nr = CHUNKID_TO_STREAMNR (id);
2295 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2296 GST_WARNING_OBJECT (avi, "invalid stream nr %d", stream_nr);
2299 stream = &avi->stream[stream_nr];
2300 if (G_UNLIKELY (!stream->strh)) {
2301 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2308 * gst_avi_demux_parse_index:
2309 * @avi: calling element (used for debugging/errors).
2310 * @buf: buffer containing the full index.
2312 * Read index entries from the provided buffer.
2313 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2316 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2322 gst_riff_index_entry *index;
2324 GstAviStream *stream;
2325 GstAviIndexEntry entry;
2331 data = GST_BUFFER_DATA (buf);
2332 size = GST_BUFFER_SIZE (buf);
2334 stamp = gst_util_get_timestamp ();
2336 /* see how many items in the index */
2337 num = size / sizeof (gst_riff_index_entry);
2341 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2343 index = (gst_riff_index_entry *) data;
2344 pos_before = avi->offset;
2346 /* figure out if the index is 0 based or relative to the MOVI start */
2347 entry.offset = GST_READ_UINT32_LE (&index[0].offset);
2348 if (entry.offset < avi->offset) {
2349 avi->index_offset = avi->offset + 8;
2350 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2352 avi->index_offset = 0;
2353 GST_DEBUG ("index is 0 based");
2356 for (i = 0, n = 0; i < num; i++) {
2357 id = GST_READ_UINT32_LE (&index[i].id);
2358 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2360 /* some sanity checks */
2361 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2362 (entry.offset == 0 && n > 0)))
2365 /* get the stream for this entry */
2366 stream = gst_avi_demux_stream_for_id (avi, id);
2367 if (G_UNLIKELY (!stream))
2370 /* handle offset and size */
2371 entry.offset += avi->index_offset + 8;
2372 entry.size = GST_READ_UINT32_LE (&index[i].size);
2375 if (stream->strh->type == GST_RIFF_FCC_auds) {
2376 /* all audio frames are keyframes */
2377 ENTRY_SET_KEYFRAME (&entry);
2380 /* else read flags */
2381 flags = GST_READ_UINT32_LE (&index[i].flags);
2382 if (flags & GST_RIFF_IF_KEYFRAME) {
2383 ENTRY_SET_KEYFRAME (&entry);
2385 ENTRY_UNSET_KEYFRAME (&entry);
2390 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2395 gst_buffer_unref (buf);
2397 /* get stream stats now */
2398 avi->have_index = gst_avi_demux_do_index_stats (avi);
2400 stamp = gst_util_get_timestamp () - stamp;
2401 GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT,
2402 GST_TIME_ARGS (stamp));
2409 GST_DEBUG_OBJECT (avi, "empty index");
2410 gst_buffer_unref (buf);
2415 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2416 ("Cannot allocate memory for %u*%u=%u bytes",
2417 (guint) sizeof (GstAviIndexEntry), num,
2418 (guint) sizeof (GstAviIndexEntry) * num));
2419 gst_buffer_unref (buf);
2425 * gst_avi_demux_stream_index:
2426 * @avi: avi demuxer object.
2428 * Seeks to index and reads it.
2431 gst_avi_demux_stream_index (GstAviDemux * avi)
2434 guint64 offset = avi->offset;
2439 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2441 /* get chunk information */
2442 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2443 if (res != GST_FLOW_OK)
2445 else if (GST_BUFFER_SIZE (buf) < 8)
2448 /* check tag first before blindy trying to read 'size' bytes */
2449 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2450 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2451 if (tag == GST_RIFF_TAG_LIST) {
2452 /* this is the movi tag */
2453 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2454 (8 + GST_ROUND_UP_2 (size)));
2455 offset += 8 + GST_ROUND_UP_2 (size);
2456 gst_buffer_unref (buf);
2457 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2458 if (res != GST_FLOW_OK)
2460 else if (GST_BUFFER_SIZE (buf) < 8)
2462 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2463 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2466 if (tag != GST_RIFF_TAG_idx1)
2471 gst_buffer_unref (buf);
2473 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2475 /* read chunk, advance offset */
2476 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2477 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2480 GST_DEBUG ("will parse index chunk size %u for tag %"
2481 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2483 gst_avi_demux_parse_index (avi, buf);
2485 #ifndef GST_DISABLE_GST_DEBUG
2486 /* debug our indexes */
2489 GstAviStream *stream;
2491 for (i = 0; i < avi->num_streams; i++) {
2492 stream = &avi->stream[i];
2493 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2494 i, stream->idx_n, stream->total_bytes);
2503 GST_DEBUG_OBJECT (avi,
2504 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2509 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2510 gst_buffer_unref (buf);
2515 GST_WARNING_OBJECT (avi,
2516 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2517 GST_FOURCC_ARGS (tag));
2518 gst_buffer_unref (buf);
2523 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2524 gst_buffer_unref (buf);
2530 * gst_avi_demux_peek_tag:
2532 * Returns the tag and size of the next chunk
2534 static GstFlowReturn
2535 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2538 GstFlowReturn res = GST_FLOW_OK;
2539 GstBuffer *buf = NULL;
2543 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2544 if (res != GST_FLOW_OK)
2547 bufsize = GST_BUFFER_SIZE (buf);
2551 bufdata = GST_BUFFER_DATA (buf);
2553 *tag = GST_READ_UINT32_LE (bufdata);
2554 *size = GST_READ_UINT32_LE (bufdata + 4);
2556 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2557 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2558 *size, offset + 8, offset + 8 + (gint64) * size);
2561 gst_buffer_unref (buf);
2568 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2573 GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
2574 res = GST_FLOW_ERROR;
2580 * gst_avi_demux_next_data_buffer:
2582 * Returns the offset and size of the next buffer
2583 * Position is the position of the buffer (after tag and size)
2585 static GstFlowReturn
2586 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2587 guint32 * tag, guint * size)
2589 guint64 off = *offset;
2594 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2595 if (res != GST_FLOW_OK)
2597 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2598 off += 8 + 4; /* skip tag + size + subtag */
2610 * gst_avi_demux_stream_scan:
2611 * @avi: calling element (used for debugging/errors).
2613 * Scan the file for all chunks to "create" a new index.
2617 gst_avi_demux_stream_scan (GstAviDemux * avi)
2620 GstAviStream *stream;
2629 * - implement non-seekable source support.
2631 GST_DEBUG_OBJECT (avi, "Creating index");
2633 /* get the size of the file */
2634 format = GST_FORMAT_BYTES;
2635 if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
2639 /* guess the total amount of entries we expect */
2643 GstAviIndexEntry entry;
2646 /* start reading data buffers to find the id and offset */
2647 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2648 if (G_UNLIKELY (res != GST_FLOW_OK))
2652 stream = gst_avi_demux_stream_for_id (avi, tag);
2653 if (G_UNLIKELY (!stream))
2656 /* we can't figure out the keyframes, assume they all are */
2657 entry.flags = GST_AVI_KEYFRAME;
2661 /* and add to the index of this stream */
2662 if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry)))
2666 /* update position */
2667 pos += GST_ROUND_UP_2 (size);
2668 if (G_UNLIKELY (pos > length)) {
2669 GST_WARNING_OBJECT (avi,
2670 "Stopping index lookup since we are further than EOF");
2676 avi->have_index = gst_avi_demux_do_index_stats (avi);
2684 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2685 ("Cannot allocate memory for %u*%u=%u bytes",
2686 (guint) sizeof (GstAviIndexEntry), num,
2687 (guint) sizeof (GstAviIndexEntry) * num));
2693 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
2697 GstAviStream *stream;
2699 total = GST_CLOCK_TIME_NONE;
2701 /* all streams start at a timestamp 0 */
2702 for (i = 0; i < avi->num_streams; i++) {
2703 GstClockTime duration, hduration;
2704 gst_riff_strh *strh;
2706 stream = &avi->stream[i];
2707 if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh)))
2710 /* get header duration for the stream */
2711 hduration = stream->hdr_duration;
2712 /* index duration calculated during parsing */
2713 duration = stream->idx_duration;
2715 /* now pick a good duration */
2716 if (GST_CLOCK_TIME_IS_VALID (duration)) {
2717 /* index gave valid duration, use that */
2718 GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT,
2719 stream, GST_TIME_ARGS (duration));
2721 /* fall back to header info to calculate a duration */
2722 duration = hduration;
2724 GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT,
2725 i, GST_TIME_ARGS (duration));
2726 /* set duration for the stream */
2727 stream->duration = duration;
2729 /* find total duration */
2730 if (total == GST_CLOCK_TIME_NONE ||
2731 (GST_CLOCK_TIME_IS_VALID (duration) && duration > total))
2735 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
2736 /* now update the duration for those streams where we had none */
2737 for (i = 0; i < avi->num_streams; i++) {
2738 stream = &avi->stream[i];
2740 if (!GST_CLOCK_TIME_IS_VALID (stream->duration)
2741 || stream->duration == 0) {
2742 stream->duration = total;
2744 GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT,
2745 stream, GST_TIME_ARGS (total));
2750 /* and set the total duration in the segment. */
2751 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
2752 GST_TIME_ARGS (total));
2754 gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
2757 /* returns FALSE if there are no pads to deliver event to,
2758 * otherwise TRUE (whatever the outcome of event sending),
2759 * takes ownership of the event. */
2761 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
2763 gboolean result = FALSE;
2766 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
2767 GST_EVENT_TYPE_NAME (event), avi->num_streams);
2769 for (i = 0; i < avi->num_streams; i++) {
2770 GstAviStream *stream = &avi->stream[i];
2774 gst_pad_push_event (stream->pad, gst_event_ref (event));
2777 gst_event_unref (event);
2782 gst_avi_demux_check_seekability (GstAviDemux * avi)
2785 gboolean seekable = FALSE;
2786 gint64 start = -1, stop = -1;
2788 query = gst_query_new_seeking (GST_FORMAT_BYTES);
2789 if (!gst_pad_peer_query (avi->sinkpad, query)) {
2790 GST_DEBUG_OBJECT (avi, "seeking query failed");
2794 gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
2796 /* try harder to query upstream size if we didn't get it the first time */
2797 if (seekable && stop == -1) {
2798 GstFormat fmt = GST_FORMAT_BYTES;
2800 GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop");
2801 gst_pad_query_peer_duration (avi->sinkpad, &fmt, &stop);
2804 /* if upstream doesn't know the size, it's likely that it's not seekable in
2805 * practice even if it technically may be seekable */
2806 if (seekable && (start != 0 || stop <= start)) {
2807 GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable");
2811 if (!avi->element_index) {
2812 GST_DEBUG_OBJECT (avi, "no index");
2817 GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %"
2818 G_GUINT64_FORMAT ")", seekable, start, stop);
2819 avi->seekable = seekable;
2821 gst_query_unref (query);
2825 * Read AVI headers when streaming
2827 static GstFlowReturn
2828 gst_avi_demux_stream_header_push (GstAviDemux * avi)
2830 GstFlowReturn ret = GST_FLOW_OK;
2835 GstBuffer *buf = NULL, *sub = NULL;
2839 GstTagList *tags = NULL;
2841 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
2843 switch (avi->header_state) {
2844 case GST_AVI_DEMUX_HEADER_TAG_LIST:
2845 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
2846 avi->offset += 8 + GST_ROUND_UP_2 (size);
2847 if (tag != GST_RIFF_TAG_LIST)
2848 goto header_no_list;
2850 gst_adapter_flush (avi->adapter, 8);
2851 /* Find the 'hdrl' LIST tag */
2852 GST_DEBUG ("Reading %d bytes", size);
2853 buf = gst_adapter_take_buffer (avi->adapter, size);
2855 if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
2856 goto header_no_hdrl;
2860 gst_adapter_flush (avi->adapter, 1);
2862 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
2864 /* the hdrl starts with a 'avih' header */
2865 if (!gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag, &sub))
2866 goto header_no_avih;
2868 if (tag != GST_RIFF_TAG_avih)
2869 goto header_no_avih;
2871 if (!gst_avi_demux_parse_avih (GST_ELEMENT (avi), sub, &avi->avih))
2872 goto header_wrong_avih;
2874 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
2876 /* now, read the elements from the header until the end */
2877 while (gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag,
2879 /* sub can be NULL on empty tags */
2884 case GST_RIFF_TAG_LIST:
2885 if (GST_BUFFER_SIZE (sub) < 4)
2888 switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
2889 case GST_RIFF_LIST_strl:
2890 if (!(gst_avi_demux_parse_stream (avi, sub))) {
2892 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
2893 ("failed to parse stream, ignoring"));
2898 case GST_RIFF_LIST_odml:
2899 gst_avi_demux_parse_odml (avi, sub);
2903 GST_WARNING_OBJECT (avi,
2904 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
2905 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
2908 case GST_RIFF_TAG_JUNK:
2913 gst_avi_demux_parse_idit (avi, sub);
2916 GST_WARNING_OBJECT (avi,
2917 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
2918 offset, GST_FOURCC_ARGS (tag));
2920 case GST_RIFF_TAG_JUNK:
2922 /* move to next chunk */
2924 gst_buffer_unref (sub);
2929 gst_buffer_unref (buf);
2930 GST_DEBUG ("elements parsed");
2932 /* check parsed streams */
2933 if (avi->num_streams == 0) {
2935 } else if (avi->num_streams != avi->avih->streams) {
2936 GST_WARNING_OBJECT (avi,
2937 "Stream header mentioned %d streams, but %d available",
2938 avi->avih->streams, avi->num_streams);
2940 GST_DEBUG ("Get junk and info next");
2941 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
2943 /* Need more data */
2947 case GST_AVI_DEMUX_HEADER_INFO:
2948 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
2950 if (gst_adapter_available (avi->adapter) < 12)
2953 data = gst_adapter_peek (avi->adapter, 12);
2954 tag = GST_READ_UINT32_LE (data);
2955 size = GST_READ_UINT32_LE (data + 4);
2956 ltag = GST_READ_UINT32_LE (data + 8);
2958 if (tag == GST_RIFF_TAG_LIST) {
2960 case GST_RIFF_LIST_movi:
2961 gst_adapter_flush (avi->adapter, 12);
2964 case GST_RIFF_LIST_INFO:
2965 GST_DEBUG ("Found INFO chunk");
2966 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
2967 GST_DEBUG ("got size %d", size);
2969 gst_adapter_flush (avi->adapter, 12);
2971 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
2974 gst_adapter_flush (avi->adapter, 1);
2975 gst_riff_parse_info (GST_ELEMENT (avi), buf, &tags);
2977 if (avi->globaltags) {
2978 gst_tag_list_insert (avi->globaltags, tags,
2979 GST_TAG_MERGE_REPLACE);
2981 avi->globaltags = tags;
2985 gst_buffer_unref (buf);
2987 avi->offset += GST_ROUND_UP_2 (size) - 4;
2989 GST_DEBUG ("skipping INFO LIST prefix");
2992 /* Need more data */
2997 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
2998 avi->offset += 8 + GST_ROUND_UP_2 (size);
2999 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3000 // ??? goto iterate; ???
3002 /* Need more data */
3008 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3009 avi->offset += 8 + GST_ROUND_UP_2 (size);
3010 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3013 /* Need more data */
3020 GST_WARNING ("unhandled header state: %d", avi->header_state);
3025 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3026 avi->num_streams, avi->stream[0].indexes);
3028 GST_DEBUG ("Found movi chunk. Starting to stream data");
3029 avi->state = GST_AVI_DEMUX_MOVI;
3031 /* no indexes in push mode, but it still sets some variables */
3032 gst_avi_demux_calculate_durations_from_index (avi);
3034 gst_avi_demux_expose_streams (avi, TRUE);
3036 /* prepare all streams for index 0 */
3037 for (i = 0; i < avi->num_streams; i++)
3038 avi->stream[i].current_entry = 0;
3040 /* create initial NEWSEGMENT event */
3041 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3042 stop = avi->segment.duration;
3044 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3046 if (avi->seek_event)
3047 gst_event_unref (avi->seek_event);
3048 avi->seek_event = gst_event_new_new_segment_full
3049 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3050 avi->segment.start, stop, avi->segment.time);
3052 gst_avi_demux_check_seekability (avi);
3054 /* at this point we know all the streams and we can signal the no more
3056 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3057 gst_element_no_more_pads (GST_ELEMENT (avi));
3064 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3065 return GST_FLOW_ERROR;
3069 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3070 ("Invalid AVI header (no LIST at start): %"
3071 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3072 return GST_FLOW_ERROR;
3076 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3077 ("Invalid AVI header (no hdrl at start): %"
3078 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3079 gst_buffer_unref (buf);
3080 return GST_FLOW_ERROR;
3084 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3085 ("Invalid AVI header (no avih at start): %"
3086 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3088 gst_buffer_unref (sub);
3090 gst_buffer_unref (buf);
3091 return GST_FLOW_ERROR;
3095 gst_buffer_unref (buf);
3096 return GST_FLOW_ERROR;
3101 gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d)
3104 date = g_date_new_dmy (d, m, y);
3105 if (!g_date_valid (date)) {
3107 GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d);
3112 if (avi->globaltags == NULL)
3113 avi->globaltags = gst_tag_list_new ();
3115 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date,
3121 gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data)
3126 ret = sscanf (data, "%d:%d:%d", &y, &m, &d);
3128 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3131 gst_avi_demux_add_date_tag (avi, y, m, d);
3135 get_month_num (gchar * data, guint size)
3137 if (g_ascii_strncasecmp (data, "jan", 3) == 0) {
3139 } else if (g_ascii_strncasecmp (data, "feb", 3) == 0) {
3141 } else if (g_ascii_strncasecmp (data, "mar", 3) == 0) {
3143 } else if (g_ascii_strncasecmp (data, "apr", 3) == 0) {
3145 } else if (g_ascii_strncasecmp (data, "may", 3) == 0) {
3147 } else if (g_ascii_strncasecmp (data, "jun", 3) == 0) {
3149 } else if (g_ascii_strncasecmp (data, "jul", 3) == 0) {
3151 } else if (g_ascii_strncasecmp (data, "aug", 3) == 0) {
3153 } else if (g_ascii_strncasecmp (data, "sep", 3) == 0) {
3155 } else if (g_ascii_strncasecmp (data, "oct", 3) == 0) {
3157 } else if (g_ascii_strncasecmp (data, "nov", 3) == 0) {
3159 } else if (g_ascii_strncasecmp (data, "dec", 3) == 0) {
3167 gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data)
3169 gint year, month, day;
3170 gint hour, min, sec;
3175 ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour,
3178 GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag");
3181 month = get_month_num (monthstr, strlen (monthstr));
3182 gst_avi_demux_add_date_tag (avi, year, month, day);
3186 gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf)
3188 gchar *data = (gchar *) GST_BUFFER_DATA (buf);
3189 guint size = GST_BUFFER_SIZE (buf);
3190 gchar *safedata = NULL;
3194 * http://www.eden-foundation.org/products/code/film_date_stamp/index.html
3196 * This tag could be in one of the below formats
3197 * 2005:08:17 11:42:43
3198 * THU OCT 26 16:46:04 2006
3199 * Mon Mar 3 09:44:56 2008
3201 * FIXME: Our date tag doesn't include hours
3204 /* skip eventual initial whitespace */
3205 while (size > 0 && g_ascii_isspace (data[0])) {
3214 /* make a safe copy to add a \0 to the end of the string */
3215 safedata = g_strndup (data, size);
3217 /* test if the first char is a alpha or a number */
3218 if (g_ascii_isdigit (data[0])) {
3219 gst_avi_demux_parse_idit_nums_only (avi, safedata);
3222 } else if (g_ascii_isalpha (data[0])) {
3223 gst_avi_demux_parse_idit_text (avi, safedata);
3231 GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info");
3235 * Read full AVI headers.
3237 static GstFlowReturn
3238 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3241 GstBuffer *buf, *sub = NULL;
3245 GstElement *element = GST_ELEMENT_CAST (avi);
3247 GstTagList *tags = NULL;
3249 stamp = gst_util_get_timestamp ();
3251 /* the header consists of a 'hdrl' LIST tag */
3252 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3253 if (res != GST_FLOW_OK)
3254 goto pull_range_failed;
3255 else if (tag != GST_RIFF_TAG_LIST)
3257 else if (GST_BUFFER_SIZE (buf) < 4)
3260 GST_DEBUG_OBJECT (avi, "parsing headers");
3262 /* Find the 'hdrl' LIST tag */
3263 while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
3264 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3265 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
3268 gst_buffer_unref (buf);
3270 /* read new chunk */
3271 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3272 if (res != GST_FLOW_OK)
3273 goto pull_range_failed;
3274 else if (tag != GST_RIFF_TAG_LIST)
3276 else if (GST_BUFFER_SIZE (buf) < 4)
3280 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3282 /* the hdrl starts with a 'avih' header */
3283 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3285 else if (tag != GST_RIFF_TAG_avih)
3287 else if (!gst_avi_demux_parse_avih (element, sub, &avi->avih))
3290 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3292 /* now, read the elements from the header until the end */
3293 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3294 /* sub can be NULL on empty tags */
3299 case GST_RIFF_TAG_LIST:
3304 if (GST_BUFFER_SIZE (sub) < 4)
3307 data = GST_BUFFER_DATA (sub);
3308 fourcc = GST_READ_UINT32_LE (data);
3311 case GST_RIFF_LIST_strl:
3312 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3313 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3314 ("failed to parse stream, ignoring"));
3319 case GST_RIFF_LIST_odml:
3320 gst_avi_demux_parse_odml (avi, sub);
3323 case GST_RIFF_LIST_INFO:
3324 GST_BUFFER_DATA (sub) = data + 4;
3325 GST_BUFFER_SIZE (sub) -= 4;
3326 gst_riff_parse_info (element, sub, &tags);
3328 if (avi->globaltags) {
3329 gst_tag_list_insert (avi->globaltags, tags,
3330 GST_TAG_MERGE_REPLACE);
3332 avi->globaltags = tags;
3338 GST_WARNING_OBJECT (avi,
3339 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3340 GST_FOURCC_ARGS (fourcc));
3341 GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
3342 GST_BUFFER_SIZE (sub));
3344 case GST_RIFF_TAG_JUNK:
3350 gst_avi_demux_parse_idit (avi, sub);
3353 GST_WARNING_OBJECT (avi,
3354 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3355 GST_FOURCC_ARGS (tag), offset);
3356 GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
3357 GST_BUFFER_SIZE (sub));
3359 case GST_RIFF_TAG_JUNK:
3362 gst_buffer_unref (sub);
3367 gst_buffer_unref (buf);
3368 GST_DEBUG ("elements parsed");
3370 /* check parsed streams */
3371 if (avi->num_streams == 0)
3373 else if (avi->num_streams != avi->avih->streams) {
3374 GST_WARNING_OBJECT (avi,
3375 "Stream header mentioned %d streams, but %d available",
3376 avi->avih->streams, avi->num_streams);
3379 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3380 G_GUINT64_FORMAT, avi->offset);
3382 /* Now, find the data (i.e. skip all junk between header and data) */
3388 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3389 if (res != GST_FLOW_OK) {
3390 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3391 goto pull_range_failed;
3392 } else if (GST_BUFFER_SIZE (buf) < 12) {
3393 GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
3394 GST_BUFFER_SIZE (buf));
3395 gst_buffer_unref (buf);
3396 return GST_FLOW_ERROR;
3399 data = GST_BUFFER_DATA (buf);
3401 tag = GST_READ_UINT32_LE (data);
3402 size = GST_READ_UINT32_LE (data + 4);
3403 ltag = GST_READ_UINT32_LE (data + 8);
3405 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3406 GST_FOURCC_ARGS (tag), size);
3407 GST_MEMDUMP ("Tag content", data, GST_BUFFER_SIZE (buf));
3408 gst_buffer_unref (buf);
3411 case GST_RIFF_TAG_LIST:{
3413 case GST_RIFF_LIST_movi:
3414 GST_DEBUG_OBJECT (avi,
3415 "Reached the 'movi' tag, we're done with skipping");
3417 case GST_RIFF_LIST_INFO:
3419 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3421 if (res != GST_FLOW_OK) {
3422 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3423 goto pull_range_failed;
3425 GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
3427 GST_DEBUG ("skipping INFO LIST prefix");
3428 avi->offset += (4 - GST_ROUND_UP_2 (size));
3429 gst_buffer_unref (buf);
3433 sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
3434 gst_riff_parse_info (element, sub, &tags);
3436 if (avi->globaltags) {
3437 gst_tag_list_insert (avi->globaltags, tags,
3438 GST_TAG_MERGE_REPLACE);
3440 avi->globaltags = tags;
3445 gst_buffer_unref (sub);
3448 gst_buffer_unref (buf);
3449 /* gst_riff_read_chunk() has already advanced avi->offset */
3452 GST_WARNING_OBJECT (avi,
3453 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3454 GST_FOURCC_ARGS (ltag));
3455 avi->offset += 8 + GST_ROUND_UP_2 (size);
3461 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3462 GST_FOURCC_ARGS (tag));
3464 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3465 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3466 /* Only get buffer for debugging if the memdump is needed */
3467 if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) {
3468 res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf);
3469 if (res != GST_FLOW_OK) {
3470 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3471 goto pull_range_failed;
3473 GST_MEMDUMP ("Junk", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
3474 gst_buffer_unref (buf);
3476 avi->offset += 8 + GST_ROUND_UP_2 (size);
3482 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3483 avi->num_streams, avi->stream[0].indexes);
3485 /* create or read stream index (for seeking) */
3486 if (avi->stream[0].indexes != NULL) {
3487 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3488 gst_avi_demux_read_subindexes_pull (avi);
3490 if (!avi->have_index) {
3491 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX)
3492 gst_avi_demux_stream_index (avi);
3494 /* still no index, scan */
3495 if (!avi->have_index) {
3496 gst_avi_demux_stream_scan (avi);
3498 /* still no index.. this is a fatal error for now.
3499 * FIXME, we should switch to plain push mode without seeking
3500 * instead of failing. */
3501 if (!avi->have_index)
3505 /* use the indexes now to construct nice durations */
3506 gst_avi_demux_calculate_durations_from_index (avi);
3508 gst_avi_demux_expose_streams (avi, FALSE);
3510 /* create initial NEWSEGMENT event */
3511 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3512 stop = avi->segment.duration;
3514 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3516 /* do initial seek to the default segment values */
3517 gst_avi_demux_do_seek (avi, &avi->segment);
3519 /* prepare initial segment */
3520 if (avi->seek_event)
3521 gst_event_unref (avi->seek_event);
3522 avi->seek_event = gst_event_new_new_segment_full
3523 (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME,
3524 avi->segment.start, stop, avi->segment.time);
3526 stamp = gst_util_get_timestamp () - stamp;
3527 GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT,
3528 GST_TIME_ARGS (stamp));
3530 /* at this point we know all the streams and we can signal the no more
3532 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3533 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3540 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3541 ("Invalid AVI header (no LIST at start): %"
3542 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3543 gst_buffer_unref (buf);
3544 return GST_FLOW_ERROR;
3548 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3549 ("Invalid AVI header (no hdrl at start): %"
3550 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3551 gst_buffer_unref (buf);
3552 return GST_FLOW_ERROR;
3556 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3557 ("Invalid AVI header (no avih at start): %"
3558 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3560 gst_buffer_unref (sub);
3561 gst_buffer_unref (buf);
3562 return GST_FLOW_ERROR;
3566 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3567 ("Invalid AVI header (cannot parse avih at start)"));
3568 gst_buffer_unref (buf);
3569 return GST_FLOW_ERROR;
3573 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3574 return GST_FLOW_ERROR;
3578 GST_WARNING ("file without or too big index");
3579 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3580 ("Could not get/create index"));
3581 return GST_FLOW_ERROR;
3585 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3586 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3587 return GST_FLOW_ERROR;
3591 /* move a stream to @index */
3593 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
3594 GstSegment * segment, guint index)
3596 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
3598 if (segment->rate < 0.0) {
3600 /* Because we don't know the frame order we need to push from the prev keyframe
3601 * to the next keyframe. If there is a smart decoder downstream he will notice
3602 * that there are too many encoded frames send and return UNEXPECTED when there
3603 * are enough decoded frames to fill the segment. */
3604 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
3606 /* FIXME, we go back to 0, we should look at segment.start. We will however
3607 * stop earlier when the see the timestamp < segment.start */
3608 stream->start_entry = 0;
3609 stream->step_entry = index;
3610 stream->current_entry = index;
3611 stream->stop_entry = next_key;
3613 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
3614 stream->start_entry, stream->step_entry, stream->stop_entry);
3616 stream->start_entry = index;
3617 stream->step_entry = index;
3618 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
3620 if (stream->current_entry != index) {
3621 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
3622 stream->current_entry, index);
3623 stream->current_entry = index;
3624 stream->discont = TRUE;
3627 /* update the buffer info */
3628 gst_avi_demux_get_buffer_info (avi, stream, index,
3629 &stream->current_timestamp, &stream->current_ts_end,
3630 &stream->current_offset, &stream->current_offset_end);
3632 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
3633 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3634 ", off_end %" G_GUINT64_FORMAT, index,
3635 GST_TIME_ARGS (stream->current_timestamp),
3636 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3637 stream->current_offset_end);
3641 * Do the actual seeking.
3644 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3646 GstClockTime seek_time;
3649 GstAviStream *stream;
3651 seek_time = segment->last_stop;
3652 keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3654 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
3655 " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
3657 /* FIXME, this code assumes the main stream with keyframes is stream 0,
3658 * which is mostly correct... */
3659 stream = &avi->stream[avi->main_stream];
3661 /* get the entry index for the requested position */
3662 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
3663 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
3665 /* check if we are already on a keyframe */
3666 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
3667 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
3668 /* now go to the previous keyframe, this is where we should start
3670 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
3671 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
3674 /* move the main stream to this position */
3675 gst_avi_demux_move_stream (avi, stream, segment, index);
3678 /* when seeking to a keyframe, we update the result seek time
3679 * to the time of the keyframe. */
3680 seek_time = stream->current_timestamp;
3681 GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT,
3682 GST_TIME_ARGS (seek_time));
3685 /* the seek time is also the last_stop and stream time when going
3687 segment->last_stop = seek_time;
3688 if (segment->rate > 0.0)
3689 segment->time = seek_time;
3691 /* now set DISCONT and align the other streams */
3692 for (i = 0; i < avi->num_streams; i++) {
3693 GstAviStream *ostream;
3695 ostream = &avi->stream[i];
3696 if ((ostream == stream) || (ostream->index == NULL))
3699 /* get the entry index for the requested position */
3700 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
3702 /* move to previous keyframe */
3703 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
3704 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
3706 gst_avi_demux_move_stream (avi, ostream, segment, index);
3708 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
3709 GST_TIME_ARGS (seek_time));
3715 * Handle seek event.
3718 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
3723 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
3727 GstSegment seeksegment = { 0, };
3731 GST_DEBUG_OBJECT (avi, "doing seek with event");
3733 gst_event_parse_seek (event, &rate, &format, &flags,
3734 &cur_type, &cur, &stop_type, &stop);
3736 /* we have to have a format as the segment format. Try to convert
3738 if (format != GST_FORMAT_TIME) {
3739 GstFormat fmt = GST_FORMAT_TIME;
3740 gboolean res = TRUE;
3742 if (cur_type != GST_SEEK_TYPE_NONE)
3743 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
3744 if (res && stop_type != GST_SEEK_TYPE_NONE)
3745 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
3751 GST_DEBUG_OBJECT (avi,
3752 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
3753 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
3754 /* FIXME: can we do anything with rate!=1.0 */
3756 GST_DEBUG_OBJECT (avi, "doing seek without event");
3761 /* save flush flag */
3762 flush = flags & GST_SEEK_FLAG_FLUSH;
3765 GstEvent *fevent = gst_event_new_flush_start ();
3767 /* for a flushing seek, we send a flush_start on all pads. This will
3768 * eventually stop streaming with a WRONG_STATE. We can thus eventually
3769 * take the STREAM_LOCK. */
3770 GST_DEBUG_OBJECT (avi, "sending flush start");
3771 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
3772 gst_pad_push_event (avi->sinkpad, fevent);
3774 /* a non-flushing seek, we PAUSE the task so that we can take the
3776 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
3777 gst_pad_pause_task (avi->sinkpad);
3780 /* wait for streaming to stop */
3781 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
3782 GST_PAD_STREAM_LOCK (avi->sinkpad);
3784 /* copy segment, we need this because we still need the old
3785 * segment when we close the current segment. */
3786 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
3789 GST_DEBUG_OBJECT (avi, "configuring seek");
3790 gst_segment_set_seek (&seeksegment, rate, format, flags,
3791 cur_type, cur, stop_type, stop, &update);
3793 /* do the seek, seeksegment.last_stop contains the new position, this
3794 * actually never fails. */
3795 gst_avi_demux_do_seek (avi, &seeksegment);
3798 GstEvent *fevent = gst_event_new_flush_stop ();
3800 GST_DEBUG_OBJECT (avi, "sending flush stop");
3801 gst_avi_demux_push_event (avi, gst_event_ref (fevent));
3802 gst_pad_push_event (avi->sinkpad, fevent);
3804 /* reset the last flow and mark discont, FLUSH is always DISCONT */
3805 for (i = 0; i < avi->num_streams; i++) {
3806 avi->stream[i].last_flow = GST_FLOW_OK;
3807 avi->stream[i].discont = TRUE;
3809 } else if (avi->segment_running) {
3812 /* we are running the current segment and doing a non-flushing seek,
3813 * close the segment first based on the last_stop. */
3814 GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
3815 " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
3816 seg = gst_event_new_new_segment_full (TRUE,
3817 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
3818 avi->segment.start, avi->segment.last_stop, avi->segment.time);
3819 gst_avi_demux_push_event (avi, seg);
3822 /* now update the real segment info */
3823 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
3825 /* post the SEGMENT_START message when we do segmented playback */
3826 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
3827 gst_element_post_message (GST_ELEMENT (avi),
3828 gst_message_new_segment_start (GST_OBJECT (avi),
3829 avi->segment.format, avi->segment.last_stop));
3832 /* prepare for streaming again */
3833 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3834 stop = avi->segment.duration;
3836 /* queue the segment event for the streaming thread. */
3837 if (avi->seek_event)
3838 gst_event_unref (avi->seek_event);
3839 if (avi->segment.rate > 0.0) {
3840 /* forwards goes from last_stop to stop */
3841 avi->seek_event = gst_event_new_new_segment_full (FALSE,
3842 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
3843 avi->segment.last_stop, stop, avi->segment.time);
3845 /* reverse goes from start to last_stop */
3846 avi->seek_event = gst_event_new_new_segment_full (FALSE,
3847 avi->segment.rate, avi->segment.applied_rate, avi->segment.format,
3848 avi->segment.start, avi->segment.last_stop, avi->segment.time);
3851 if (!avi->streaming) {
3852 avi->segment_running = TRUE;
3853 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
3856 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
3863 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
3869 gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad,
3875 GstSeekType cur_type, stop_type;
3880 GstIndexEntry *entry;
3882 GST_DEBUG_OBJECT (avi, "doing push-based seek");
3884 gst_event_parse_seek (event, &rate, &format, &flags,
3885 &cur_type, &cur, &stop_type, &stop);
3887 if (stop_type != GST_SEEK_TYPE_NONE)
3888 goto unsupported_seek;
3891 /* only forward streaming and seeking is possible */
3893 goto unsupported_seek;
3896 if (format != GST_FORMAT_TIME)
3897 goto unsupported_format;
3899 /* not really advisable otherwise */
3900 if ((flags & GST_SEEK_FLAG_FLUSH) == 0)
3901 goto unsupported_seek;
3903 /* should have index, let's check anyway */
3904 if (!avi->element_index)
3907 /* find reasonable corresponding BYTE position
3908 * note that we have no keyframe info in push mode whatsoever,
3909 * so we can not cater for related stuff in any way */
3911 /* some slack aiming for a keyframe */
3912 if (cur < GST_AVI_SEEK_PUSH_DISPLACE)
3915 cur -= GST_AVI_SEEK_PUSH_DISPLACE;
3917 entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id,
3918 GST_INDEX_LOOKUP_BEFORE, GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_TIME, cur);
3923 gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &byte_cur);
3924 gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time);
3926 GST_DEBUG_OBJECT (avi, "found index entry for %" GST_TIME_FORMAT
3927 " at %" GST_TIME_FORMAT ", located at offset %" G_GINT64_FORMAT,
3928 GST_TIME_ARGS (cur), GST_TIME_ARGS (time), byte_cur);
3930 /* adjust offset to be in each stream's region */
3931 byte_cur = gst_avi_demux_seek_streams (avi, byte_cur, TRUE);
3933 /* let's not try push seeking if target and entry are too far apart */
3934 if (cur - time > 30 * GST_SECOND)
3937 GST_DEBUG_OBJECT (avi, "Pushing BYTE seek rate %g, "
3938 "start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, rate, byte_cur,
3940 /* BYTE seek event */
3941 event = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, cur_type, byte_cur,
3943 res = gst_pad_push_event (avi->sinkpad, event);
3950 GST_DEBUG_OBJECT (avi, "could not determine byte position to seek to, "
3956 GST_DEBUG_OBJECT (avi, "unsupported seek, seek aborted.");
3961 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
3967 * Helper for gst_avi_demux_invert()
3970 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
3972 memcpy (tmp, d1, bytes);
3973 memcpy (d1, d2, bytes);
3974 memcpy (d2, tmp, bytes);
3978 #define gst_avi_demux_is_uncompressed(fourcc) \
3979 (fourcc == GST_RIFF_DIB || \
3980 fourcc == GST_RIFF_rgb || \
3981 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
3984 * Invert DIB buffers... Takes existing buffer and
3985 * returns either the buffer or a new one (with old
3986 * one dereferenced).
3987 * FIXME: can't we preallocate tmp? and remember stride, bpp?
3990 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
3997 if (stream->strh->type != GST_RIFF_FCC_vids)
4000 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
4001 return buf; /* Ignore non DIB buffers */
4004 s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
4005 if (!gst_structure_get_int (s, "bpp", &bpp)) {
4006 GST_WARNING ("Failed to retrieve depth from caps");
4010 if (stream->strf.vids == NULL) {
4011 GST_WARNING ("Failed to retrieve vids for stream");
4015 h = stream->strf.vids->height;
4016 w = stream->strf.vids->width;
4017 stride = w * (bpp / 8);
4019 buf = gst_buffer_make_writable (buf);
4020 if (GST_BUFFER_SIZE (buf) < (stride * h)) {
4021 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
4025 tmp = g_malloc (stride);
4027 for (y = 0; y < h / 2; y++) {
4028 swap_line (GST_BUFFER_DATA (buf) + stride * y,
4029 GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
4038 gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream,
4039 GstClockTime timestamp, guint64 offset, gboolean keyframe)
4041 /* do not add indefinitely for open-ended streaming */
4042 if (G_UNLIKELY (avi->element_index && avi->seekable)) {
4043 GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %"
4044 G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset);
4045 gst_index_add_association (avi->element_index, avi->index_id,
4046 keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT : GST_ASSOCIATION_FLAG_NONE,
4047 GST_FORMAT_TIME, timestamp, GST_FORMAT_BYTES, offset, NULL);
4048 /* well, current_total determines TIME and entry DEFAULT (frame #) ... */
4049 gst_index_add_association (avi->element_index, stream->index_id,
4050 GST_ASSOCIATION_FLAG_NONE,
4051 GST_FORMAT_TIME, stream->current_total, GST_FORMAT_BYTES, offset,
4052 GST_FORMAT_DEFAULT, stream->current_entry, NULL);
4057 * Returns the aggregated GstFlowReturn.
4059 static GstFlowReturn
4060 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
4064 gboolean unexpected = FALSE, not_linked = TRUE;
4066 /* store the value */
4067 stream->last_flow = ret;
4069 /* any other error that is not-linked or eos can be returned right away */
4070 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4073 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
4074 for (i = 0; i < avi->num_streams; i++) {
4075 GstAviStream *ostream = &avi->stream[i];
4077 ret = ostream->last_flow;
4078 /* no unexpected or unlinked, return */
4079 if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED))
4082 /* we check to see if we have at least 1 unexpected or all unlinked */
4083 unexpected |= (ret == GST_FLOW_UNEXPECTED);
4084 not_linked &= (ret == GST_FLOW_NOT_LINKED);
4086 /* when we get here, we all have unlinked or unexpected */
4088 ret = GST_FLOW_NOT_LINKED;
4089 else if (unexpected)
4090 ret = GST_FLOW_UNEXPECTED;
4092 GST_LOG_OBJECT (avi, "combined %s to return %s",
4093 gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret));
4097 /* move @stream to the next position in its index */
4098 static GstFlowReturn
4099 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
4102 guint old_entry, new_entry;
4104 old_entry = stream->current_entry;
4106 new_entry = old_entry + 1;
4108 /* see if we reached the end */
4109 if (new_entry > stream->stop_entry) {
4110 if (avi->segment.rate < 0.0) {
4111 if (stream->step_entry == stream->start_entry) {
4112 /* we stepped all the way to the start, eos */
4113 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
4116 /* backwards, stop becomes step, find a new step */
4117 stream->stop_entry = stream->step_entry;
4118 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
4119 stream->stop_entry, TRUE);
4121 GST_DEBUG_OBJECT (avi,
4122 "reverse playback jump: start %u, step %u, stop %u",
4123 stream->start_entry, stream->step_entry, stream->stop_entry);
4125 /* and start from the previous keyframe now */
4126 new_entry = stream->step_entry;
4129 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
4134 if (new_entry != old_entry) {
4135 stream->current_entry = new_entry;
4136 stream->current_total = stream->index[new_entry].total;
4138 if (new_entry == old_entry + 1) {
4139 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
4140 old_entry, new_entry);
4141 /* we simply moved one step forwards, reuse current info */
4142 stream->current_timestamp = stream->current_ts_end;
4143 stream->current_offset = stream->current_offset_end;
4144 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4145 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
4147 /* we moved DISCONT, full update */
4148 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4149 &stream->current_timestamp, &stream->current_ts_end,
4150 &stream->current_offset, &stream->current_offset_end);
4151 /* and MARK discont for this stream */
4152 stream->last_flow = GST_FLOW_OK;
4153 stream->discont = TRUE;
4154 GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT
4155 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4156 ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry,
4157 GST_TIME_ARGS (stream->current_timestamp),
4158 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
4159 stream->current_offset_end);
4167 GST_DEBUG_OBJECT (avi, "we are EOS");
4168 /* setting current_timestamp to -1 marks EOS */
4169 stream->current_timestamp = -1;
4170 return GST_FLOW_UNEXPECTED;
4174 /* find the stream with the lowest current position when going forwards or with
4175 * the highest position when going backwards, this is the stream
4176 * we should push from next */
4178 gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate)
4180 guint64 min_time, max_time;
4181 guint stream_num, i;
4184 min_time = G_MAXUINT64;
4187 for (i = 0; i < avi->num_streams; i++) {
4189 GstAviStream *stream;
4191 stream = &avi->stream[i];
4192 position = stream->current_timestamp;
4194 /* position of -1 is EOS */
4195 if (position != -1) {
4196 if (rate > 0.0 && position < min_time) {
4197 min_time = position;
4199 } else if (rate < 0.0 && position >= max_time) {
4200 max_time = position;
4208 static GstFlowReturn
4209 gst_avi_demux_loop_data (GstAviDemux * avi)
4211 GstFlowReturn ret = GST_FLOW_OK;
4213 GstAviStream *stream;
4214 gboolean processed = FALSE;
4216 guint64 offset, size;
4217 GstClockTime timestamp, duration;
4218 guint64 out_offset, out_offset_end;
4220 GstAviIndexEntry *entry;
4223 stream_num = gst_avi_demux_find_next (avi, avi->segment.rate);
4226 if (G_UNLIKELY (stream_num == -1)) {
4227 GST_DEBUG_OBJECT (avi, "all streams are EOS");
4231 /* we have the stream now */
4232 stream = &avi->stream[stream_num];
4234 /* skip streams without pads */
4236 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
4241 /* get the timing info for the entry */
4242 timestamp = stream->current_timestamp;
4243 duration = stream->current_ts_end - timestamp;
4244 out_offset = stream->current_offset;
4245 out_offset_end = stream->current_offset_end;
4247 /* get the entry data info */
4248 entry = &stream->index[stream->current_entry];
4249 offset = entry->offset;
4251 keyframe = ENTRY_IS_KEYFRAME (entry);
4253 /* skip empty entries */
4255 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)",
4256 stream->current_entry, size, stream->pad);
4260 if (avi->segment.rate > 0.0) {
4261 /* only check this for fowards playback for now */
4262 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4263 && (timestamp > avi->segment.stop)) {
4268 GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %"
4269 G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size,
4270 stream_num, offset, offset, keyframe);
4272 /* FIXME, check large chunks and cut them up */
4274 /* pull in the data */
4275 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
4276 if (ret != GST_FLOW_OK)
4279 /* check for short buffers, this is EOS as well */
4280 if (GST_BUFFER_SIZE (buf) < size)
4283 /* invert the picture if needed */
4284 buf = gst_avi_demux_invert (stream, buf);
4286 /* mark non-keyframes */
4288 GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4290 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4292 GST_BUFFER_TIMESTAMP (buf) = timestamp;
4293 GST_BUFFER_DURATION (buf) = duration;
4294 GST_BUFFER_OFFSET (buf) = out_offset;
4295 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
4297 /* mark discont when pending */
4298 if (stream->discont) {
4299 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4300 stream->discont = FALSE;
4303 gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe);
4305 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4307 /* update current position in the segment */
4308 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, timestamp);
4310 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %u, ts %"
4311 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4312 ", off_end %" G_GUINT64_FORMAT,
4313 GST_BUFFER_SIZE (buf), GST_TIME_ARGS (timestamp),
4314 GST_TIME_ARGS (duration), out_offset, out_offset_end);
4316 ret = gst_pad_push (stream->pad, buf);
4318 /* mark as processed, we increment the frame and byte counters then
4319 * leave the while loop and return the GstFlowReturn */
4322 if (avi->segment.rate < 0) {
4323 if (timestamp > avi->segment.stop && ret == GST_FLOW_UNEXPECTED) {
4324 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4325 * we are at the end of the segment, so we just need to jump
4326 * back to the previous section. */
4327 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4332 /* move to next item */
4333 ret = gst_avi_demux_advance (avi, stream, ret);
4336 ret = gst_avi_demux_combine_flows (avi, stream, ret);
4337 } while (!processed);
4345 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
4346 ret = GST_FLOW_UNEXPECTED;
4351 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4352 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4353 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
4354 ret = GST_FLOW_UNEXPECTED;
4359 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
4360 " size=%" G_GUINT64_FORMAT, offset, size);
4365 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4366 ", only got %d/%" G_GUINT64_FORMAT " bytes (truncated file?)", offset,
4367 GST_BUFFER_SIZE (buf), size);
4368 gst_buffer_unref (buf);
4369 ret = GST_FLOW_UNEXPECTED;
4375 * Read data. If we have an index it delegates to
4376 * gst_avi_demux_process_next_entry().
4378 static GstFlowReturn
4379 gst_avi_demux_stream_data (GstAviDemux * avi)
4384 GstFlowReturn res = GST_FLOW_OK;
4385 GstFormat format = GST_FORMAT_TIME;
4387 if (G_UNLIKELY (avi->have_eos)) {
4388 /* Clean adapter, we're done */
4389 gst_adapter_clear (avi->adapter);
4390 return GST_FLOW_UNEXPECTED;
4393 if (G_UNLIKELY (avi->todrop)) {
4396 if ((drop = gst_adapter_available (avi->adapter))) {
4397 if (drop > avi->todrop)
4399 GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop);
4400 gst_adapter_flush (avi->adapter, drop);
4401 avi->todrop -= drop;
4402 avi->offset += drop;
4406 /* Iterate until need more data, so adapter won't grow too much */
4408 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4412 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4413 GST_FOURCC_ARGS (tag), size);
4415 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4416 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4417 GST_LOG ("Chunk ok");
4418 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4419 GST_DEBUG ("Found sub-index tag");
4420 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4421 /* accept 0 size buffer here */
4422 avi->abort_buffering = FALSE;
4423 GST_DEBUG (" skipping %d bytes for now", size);
4424 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4427 } else if (tag == GST_RIFF_TAG_idx1) {
4428 GST_DEBUG ("Found index tag, stream done");
4429 avi->have_eos = TRUE;
4430 return GST_FLOW_UNEXPECTED;
4431 } else if (tag == GST_RIFF_TAG_LIST) {
4432 /* movi chunks might be grouped in rec list */
4433 if (gst_adapter_available (avi->adapter) >= 12) {
4434 GST_DEBUG ("Found LIST tag, skipping LIST header");
4435 gst_adapter_flush (avi->adapter, 12);
4439 } else if (tag == GST_RIFF_TAG_JUNK) {
4440 /* rec list might contain JUNK chunks */
4441 GST_DEBUG ("Found JUNK tag");
4442 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4443 /* accept 0 size buffer here */
4444 avi->abort_buffering = FALSE;
4445 GST_DEBUG (" skipping %d bytes for now", size);
4446 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4450 GST_DEBUG ("No more stream chunks, send EOS");
4451 avi->have_eos = TRUE;
4452 return GST_FLOW_UNEXPECTED;
4455 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4456 /* supposedly one hopes to catch a nicer chunk later on ... */
4457 /* FIXME ?? give up here rather than possibly ending up going
4458 * through the whole file */
4459 if (avi->abort_buffering) {
4460 avi->abort_buffering = FALSE;
4461 gst_adapter_flush (avi->adapter, 8);
4465 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4466 GST_FOURCC_ARGS (tag), size);
4468 stream_nr = CHUNKID_TO_STREAMNR (tag);
4470 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4472 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4473 stream_nr, GST_FOURCC_ARGS (tag));
4474 avi->offset += 8 + GST_ROUND_UP_2 (size);
4475 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4477 GstAviStream *stream;
4478 GstClockTime next_ts = 0;
4482 gst_adapter_flush (avi->adapter, 8);
4485 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
4486 /* patch the size */
4487 GST_BUFFER_SIZE (buf) = size;
4488 offset = avi->offset;
4489 avi->offset += 8 + GST_ROUND_UP_2 (size);
4491 stream = &avi->stream[stream_nr];
4493 /* set delay (if any)
4494 if (stream->strh->init_frames == stream->current_frame &&
4496 stream->delay = next_ts;
4499 /* parsing of corresponding header may have failed */
4500 if (G_UNLIKELY (!stream->pad)) {
4501 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
4502 GST_FOURCC_ARGS (tag));
4503 gst_buffer_unref (buf);
4505 GstClockTime dur_ts = 0;
4507 /* get time of this buffer */
4508 gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
4509 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4512 gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE);
4514 /* increment our positions */
4515 stream->current_entry++;
4516 stream->current_total += size;
4518 /* invert the picture if needed */
4519 buf = gst_avi_demux_invert (stream, buf);
4521 gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
4522 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4525 GST_BUFFER_TIMESTAMP (buf) = next_ts;
4526 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
4527 if (stream->strh->type == GST_RIFF_FCC_vids) {
4528 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
4529 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
4531 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4532 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
4535 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4536 GST_DEBUG_OBJECT (avi,
4537 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
4538 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
4539 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
4540 GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_OFFSET (buf),
4541 size, GST_PAD_NAME (stream->pad));
4543 /* update current position in the segment */
4544 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
4546 /* mark discont when pending */
4547 if (G_UNLIKELY (stream->discont)) {
4548 GST_DEBUG_OBJECT (avi, "Setting DISCONT");
4549 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4550 stream->discont = FALSE;
4552 res = gst_pad_push (stream->pad, buf);
4555 res = gst_avi_demux_combine_flows (avi, stream, res);
4556 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4557 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
4570 GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
4571 gst_format_get_name (format));
4572 res = GST_FLOW_ERROR;
4578 * Send pending tags.
4581 push_tag_lists (GstAviDemux * avi)
4589 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
4591 for (i = 0; i < avi->num_streams; i++) {
4592 GstAviStream *stream = &avi->stream[i];
4593 GstPad *pad = stream->pad;
4595 tags = stream->taglist;
4598 GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags);
4600 gst_element_found_tags_for_pad (GST_ELEMENT_CAST (avi), pad, tags);
4601 stream->taglist = NULL;
4605 if (!(tags = avi->globaltags))
4606 tags = gst_tag_list_new ();
4608 gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE,
4609 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
4611 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags);
4612 gst_element_found_tags (GST_ELEMENT_CAST (avi), tags);
4613 avi->globaltags = NULL;
4614 avi->got_tags = FALSE;
4618 gst_avi_demux_loop (GstPad * pad)
4621 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4623 switch (avi->state) {
4624 case GST_AVI_DEMUX_START:
4625 res = gst_avi_demux_stream_init_pull (avi);
4626 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4627 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4630 avi->state = GST_AVI_DEMUX_HEADER;
4632 case GST_AVI_DEMUX_HEADER:
4633 res = gst_avi_demux_stream_header_pull (avi);
4634 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4635 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4638 avi->state = GST_AVI_DEMUX_MOVI;
4640 case GST_AVI_DEMUX_MOVI:
4641 if (G_UNLIKELY (avi->seek_event)) {
4642 gst_avi_demux_push_event (avi, avi->seek_event);
4643 avi->seek_event = NULL;
4645 if (G_UNLIKELY (avi->got_tags)) {
4646 push_tag_lists (avi);
4648 /* process each index entry in turn */
4649 res = gst_avi_demux_loop_data (avi);
4651 /* pause when error */
4652 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4653 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
4658 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
4659 res = GST_FLOW_ERROR;
4667 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
4668 avi->segment_running = FALSE;
4669 gst_pad_pause_task (avi->sinkpad);
4671 if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
4672 gboolean push_eos = TRUE;
4674 if (res == GST_FLOW_UNEXPECTED) {
4675 /* handle end-of-stream/segment */
4676 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4679 if ((stop = avi->segment.stop) == -1)
4680 stop = avi->segment.duration;
4682 GST_INFO_OBJECT (avi, "sending segment_done");
4684 gst_element_post_message
4686 gst_message_new_segment_done (GST_OBJECT (avi), GST_FORMAT_TIME,
4691 /* for fatal errors we post an error message */
4692 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
4693 (_("Internal data stream error.")),
4694 ("streaming stopped, reason %s", gst_flow_get_name (res)));
4697 GST_INFO_OBJECT (avi, "sending eos");
4698 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
4699 (res == GST_FLOW_UNEXPECTED)) {
4700 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
4701 (NULL), ("got eos but no streams (yet)"));
4708 static GstFlowReturn
4709 gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
4712 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4714 GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
4715 gst_adapter_push (avi->adapter, buf);
4717 switch (avi->state) {
4718 case GST_AVI_DEMUX_START:
4719 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
4720 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4724 case GST_AVI_DEMUX_HEADER:
4725 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
4726 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4730 case GST_AVI_DEMUX_MOVI:
4731 if (G_UNLIKELY (avi->seek_event)) {
4732 gst_avi_demux_push_event (avi, avi->seek_event);
4733 avi->seek_event = NULL;
4735 if (G_UNLIKELY (avi->got_tags)) {
4736 push_tag_lists (avi);
4738 res = gst_avi_demux_stream_data (avi);
4741 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
4742 ("Illegal internal state"));
4743 res = GST_FLOW_ERROR;
4747 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
4748 gst_flow_get_name (res));
4750 if (G_UNLIKELY (avi->abort_buffering)) {
4751 avi->abort_buffering = FALSE;
4752 res = GST_FLOW_ERROR;
4753 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
4760 gst_avi_demux_sink_activate (GstPad * sinkpad)
4762 if (gst_pad_check_pull_range (sinkpad)) {
4763 GST_DEBUG ("going to pull mode");
4764 return gst_pad_activate_pull (sinkpad, TRUE);
4766 GST_DEBUG ("going to push (streaming) mode");
4767 return gst_pad_activate_push (sinkpad, TRUE);
4772 gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
4774 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
4777 avi->segment_running = TRUE;
4778 avi->streaming = FALSE;
4779 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4782 avi->segment_running = FALSE;
4783 return gst_pad_stop_task (sinkpad);
4788 gst_avi_demux_activate_push (GstPad * pad, gboolean active)
4790 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
4793 GST_DEBUG ("avi: activating push/chain function");
4794 avi->streaming = TRUE;
4796 /* create index for some push based seeking if not provided */
4797 GST_OBJECT_LOCK (avi);
4798 if (!avi->element_index) {
4799 GST_DEBUG_OBJECT (avi, "creating index");
4800 avi->element_index = gst_index_factory_make ("memindex");
4802 GST_OBJECT_UNLOCK (avi);
4803 /* object lock might be taken again */
4804 gst_index_get_writer_id (avi->element_index, GST_OBJECT (avi),
4808 GST_DEBUG ("avi: deactivating push/chain function");
4815 gst_avi_demux_set_index (GstElement * element, GstIndex * index)
4817 GstAviDemux *avi = GST_AVI_DEMUX (element);
4819 GST_OBJECT_LOCK (avi);
4820 if (avi->element_index)
4821 gst_object_unref (avi->element_index);
4823 avi->element_index = gst_object_ref (index);
4825 avi->element_index = NULL;
4827 GST_OBJECT_UNLOCK (avi);
4828 /* object lock might be taken again */
4830 gst_index_get_writer_id (index, GST_OBJECT (element), &avi->index_id);
4831 GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index);
4835 gst_avi_demux_get_index (GstElement * element)
4837 GstIndex *result = NULL;
4838 GstAviDemux *avi = GST_AVI_DEMUX (element);
4840 GST_OBJECT_LOCK (avi);
4841 if (avi->element_index)
4842 result = gst_object_ref (avi->element_index);
4843 GST_OBJECT_UNLOCK (avi);
4845 GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result);
4850 static GstStateChangeReturn
4851 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
4853 GstStateChangeReturn ret;
4854 GstAviDemux *avi = GST_AVI_DEMUX (element);
4856 switch (transition) {
4857 case GST_STATE_CHANGE_READY_TO_PAUSED:
4858 avi->streaming = FALSE;
4859 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
4865 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
4866 if (ret == GST_STATE_CHANGE_FAILURE)
4869 switch (transition) {
4870 case GST_STATE_CHANGE_PAUSED_TO_READY:
4871 gst_avi_demux_reset (avi);