2 * Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
3 * Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>)
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
20 /* Element-Checklist-Version: 5 */
23 * SECTION:element-avidemux
25 * Demuxes an .avi file into raw or compressed audio and/or video streams.
27 * This element supports both push and pull-based scheduling, depending on the
28 * capabilities of the upstream elements.
31 * <title>Example launch line</title>
33 * gst-launch filesrc location=test.avi ! avidemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink
34 * ]| Play (parse and decode) an .avi file and try to output it to
35 * an automatically detected soundcard and videosink. If the AVI file contains
36 * compressed audio or video data, this will only work if you have the
37 * right decoder elements/plugins installed.
40 * Last reviewed on 2006-12-29 (0.10.6)
49 #include "gst/riff/riff-media.h"
50 #include "gstavidemux.h"
52 #include <gst/gst-i18n-plugin.h>
53 #include <gst/base/gstadapter.h>
56 #define DIV_ROUND_UP(s,v) ((s) + ((v)-1) / (v))
58 GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
59 #define GST_CAT_DEFAULT avidemux_debug
60 GST_DEBUG_CATEGORY_STATIC (GST_CAT_PERFORMANCE);
62 GST_DEBUG_CATEGORY_EXTERN (GST_CAT_EVENT);
64 static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
67 GST_STATIC_CAPS ("video/x-msvideo")
70 static void gst_avi_demux_base_init (GstAviDemuxClass * klass);
71 static void gst_avi_demux_class_init (GstAviDemuxClass * klass);
72 static void gst_avi_demux_init (GstAviDemux * avi);
73 static void gst_avi_demux_finalize (GObject * object);
75 static void gst_avi_demux_reset (GstAviDemux * avi);
78 static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
80 static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event);
81 static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
83 static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event);
86 static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
88 static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad);
89 static gboolean gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query);
90 static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
91 gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
93 static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
94 static gboolean gst_avi_demux_handle_seek (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 GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
104 GstStateChange transition);
106 static GstElementClass *parent_class = NULL;
108 /* GObject methods */
111 gst_avi_demux_get_type (void)
113 static GType avi_demux_type = 0;
115 if (!avi_demux_type) {
116 static const GTypeInfo avi_demux_info = {
117 sizeof (GstAviDemuxClass),
118 (GBaseInitFunc) gst_avi_demux_base_init,
120 (GClassInitFunc) gst_avi_demux_class_init,
123 sizeof (GstAviDemux),
125 (GInstanceInitFunc) gst_avi_demux_init,
129 g_type_register_static (GST_TYPE_ELEMENT,
130 "GstAviDemux", &avi_demux_info, 0);
133 return avi_demux_type;
137 gst_avi_demux_base_init (GstAviDemuxClass * klass)
139 static const GstElementDetails gst_avi_demux_details =
140 GST_ELEMENT_DETAILS ("Avi demuxer",
142 "Demultiplex an avi file into audio and video",
143 "Erik Walthinsen <omega@cse.ogi.edu>\n"
144 "Wim Taymans <wim.taymans@chello.be>\n"
145 "Thijs Vermeir <thijsvermeir@gmail.com>");
146 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
147 GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl;
148 GstCaps *audcaps, *vidcaps, *subcaps;
150 audcaps = gst_riff_create_audio_template_caps ();
151 gst_caps_append (audcaps, gst_caps_new_simple ("audio/x-avi-unknown", NULL));
152 audiosrctempl = gst_pad_template_new ("audio_%02d",
153 GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
155 vidcaps = gst_riff_create_video_template_caps ();
156 gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
157 gst_caps_append (vidcaps, gst_caps_new_simple ("video/x-avi-unknown", NULL));
158 videosrctempl = gst_pad_template_new ("video_%02d",
159 GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
161 subcaps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
162 subsrctempl = gst_pad_template_new ("subtitle_%02d",
163 GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
164 gst_element_class_add_pad_template (element_class, audiosrctempl);
165 gst_element_class_add_pad_template (element_class, videosrctempl);
166 gst_element_class_add_pad_template (element_class, subsrctempl);
167 gst_element_class_add_pad_template (element_class,
168 gst_static_pad_template_get (&sink_templ));
169 gst_element_class_set_details (element_class, &gst_avi_demux_details);
173 gst_avi_demux_class_init (GstAviDemuxClass * klass)
175 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
176 GObjectClass *gobject_class = (GObjectClass *) klass;
178 GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
179 0, "Demuxer for AVI streams");
180 GST_DEBUG_CATEGORY_GET (GST_CAT_PERFORMANCE, "GST_PERFORMANCE");
182 parent_class = g_type_class_peek_parent (klass);
184 gobject_class->finalize = gst_avi_demux_finalize;
185 gstelement_class->change_state =
186 GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
190 gst_avi_demux_init (GstAviDemux * avi)
192 avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
193 gst_pad_set_activate_function (avi->sinkpad,
194 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate));
195 gst_pad_set_activatepull_function (avi->sinkpad,
196 GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_pull));
197 gst_pad_set_activatepush_function (avi->sinkpad,
198 GST_DEBUG_FUNCPTR (gst_avi_demux_activate_push));
199 gst_pad_set_chain_function (avi->sinkpad,
200 GST_DEBUG_FUNCPTR (gst_avi_demux_chain));
201 gst_pad_set_event_function (avi->sinkpad,
202 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event));
203 gst_element_add_pad (GST_ELEMENT (avi), avi->sinkpad);
205 avi->adapter = gst_adapter_new ();
207 gst_avi_demux_reset (avi);
211 gst_avi_demux_finalize (GObject * object)
213 GstAviDemux *avi = GST_AVI_DEMUX (object);
215 GST_DEBUG ("AVI: finalize");
217 g_object_unref (avi->adapter);
219 G_OBJECT_CLASS (parent_class)->finalize (object);
223 gst_avi_demux_reset (GstAviDemux * avi)
227 GST_DEBUG ("AVI: reset");
229 for (i = 0; i < avi->num_streams; i++) {
230 g_free (avi->stream[i].strh);
231 g_free (avi->stream[i].strf.data);
232 if (avi->stream[i].name)
233 g_free (avi->stream[i].name);
234 if (avi->stream[i].initdata)
235 gst_buffer_unref (avi->stream[i].initdata);
236 if (avi->stream[i].extradata)
237 gst_buffer_unref (avi->stream[i].extradata);
238 if (avi->stream[i].pad) {
239 gst_pad_set_active (avi->stream[i].pad, FALSE);
240 gst_element_remove_pad (GST_ELEMENT (avi), avi->stream[i].pad);
242 if (avi->stream[i].taglist) {
243 gst_tag_list_free (avi->stream[i].taglist);
244 avi->stream[i].taglist = NULL;
247 memset (&avi->stream, 0, sizeof (avi->stream));
249 avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
250 avi->num_streams = 0;
251 avi->num_v_streams = 0;
252 avi->num_a_streams = 0;
253 avi->num_t_streams = 0;
255 avi->state = GST_AVI_DEMUX_START;
258 //g_free (avi->index_entries);
259 //avi->index_entries = NULL;
260 //avi->index_size = 0;
261 avi->index_offset = 0;
265 if (avi->seek_event) {
266 gst_event_unref (avi->seek_event);
267 avi->seek_event = NULL;
271 gst_tag_list_free (avi->globaltags);
272 avi->globaltags = NULL;
274 avi->got_tags = TRUE; /* we always want to push global tags */
275 avi->have_eos = FALSE;
277 gst_adapter_clear (avi->adapter);
279 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
283 /* GstElement methods */
286 static const GstFormat *
287 gst_avi_demux_get_src_formats (GstPad * pad)
289 GstAviStream *stream = gst_pad_get_element_private (pad);
291 static const GstFormat src_a_formats[] = {
297 static const GstFormat src_v_formats[] = {
303 return (stream->strh->type == GST_RIFF_FCC_auds ?
304 src_a_formats : src_v_formats);
308 /* assumes stream->strf.auds->av_bps != 0 */
309 static inline GstClockTime
310 avi_stream_convert_bytes_to_time_unchecked (GstAviStream * stream,
313 return gst_util_uint64_scale (bytes, GST_SECOND, stream->strf.auds->av_bps);
316 static inline guint64
317 avi_stream_convert_time_to_bytes_unchecked (GstAviStream * stream,
320 return gst_util_uint64_scale (time, stream->strf.auds->av_bps, GST_SECOND);
323 /* assumes stream->strh->rate != 0 */
324 static inline GstClockTime
325 avi_stream_convert_frames_to_time_unchecked (GstAviStream * stream,
328 return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
332 static inline guint64
333 avi_stream_convert_time_to_frames_unchecked (GstAviStream * stream,
336 return gst_util_uint64_scale (time, stream->strh->rate,
337 stream->strh->scale * GST_SECOND);
341 gst_avi_demux_src_convert (GstPad * pad,
342 GstFormat src_format,
343 gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
345 GstAviStream *stream = gst_pad_get_element_private (pad);
349 "Received src_format:%s, src_value:%" G_GUINT64_FORMAT
350 ", dest_format:%s", gst_format_get_name (src_format), src_value,
351 gst_format_get_name (*dest_format));
353 if (G_UNLIKELY (src_format == *dest_format)) {
354 *dest_value = src_value;
357 if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
361 if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
362 (src_format == GST_FORMAT_BYTES
363 || *dest_format == GST_FORMAT_BYTES))) {
368 switch (src_format) {
369 case GST_FORMAT_TIME:
370 switch (*dest_format) {
371 case GST_FORMAT_BYTES:
372 *dest_value = gst_util_uint64_scale (src_value,
373 (guint64) stream->strf.auds->av_bps, GST_SECOND);
375 case GST_FORMAT_DEFAULT:
377 gst_util_uint64_scale_round (src_value, stream->strh->rate,
378 stream->strh->scale * GST_SECOND);
385 case GST_FORMAT_BYTES:
386 switch (*dest_format) {
387 case GST_FORMAT_TIME:
388 if (stream->strf.auds->av_bps != 0) {
389 *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
399 case GST_FORMAT_DEFAULT:
400 switch (*dest_format) {
401 case GST_FORMAT_TIME:
403 avi_stream_convert_frames_to_time_unchecked (stream, src_value);
416 "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
417 gst_format_get_name (*dest_format), *dest_value);
421 static const GstQueryType *
422 gst_avi_demux_get_src_query_types (GstPad * pad)
424 static const GstQueryType src_types[] = {
436 gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query)
439 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
441 GstAviStream *stream = gst_pad_get_element_private (pad);
443 if (!stream->strh || !stream->strf.data)
444 return gst_pad_query_default (pad, query);
446 switch (GST_QUERY_TYPE (query)) {
447 case GST_QUERY_POSITION:{
450 GST_DEBUG ("pos query for stream %d: frames %d, bytes %" G_GUINT64_FORMAT,
451 stream->num, stream->current_entry, stream->current_total);
453 if (stream->strh->type == GST_RIFF_FCC_auds) {
454 if (stream->is_vbr) {
456 pos = gst_util_uint64_scale ((gint64) stream->current_entry *
457 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
458 GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
459 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
460 } else if (stream->strf.auds->av_bps != 0) {
462 pos = gst_util_uint64_scale (stream->current_total, GST_SECOND,
463 (guint64) stream->strf.auds->av_bps);
464 GST_DEBUG_OBJECT (avi,
465 "CBR convert bytes %" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT,
466 stream->current_total, GST_TIME_ARGS (pos));
467 } else if (stream->idx_n != 0 && stream->total_bytes != 0) {
468 /* calculate timestamps based on percentage of length */
469 guint64 xlen = avi->avih->us_frame *
470 avi->avih->tot_frames * GST_USECOND;
472 if (stream->is_vbr) {
473 pos = gst_util_uint64_scale (xlen, stream->current_entry,
475 GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
476 GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos));
478 pos = gst_util_uint64_scale (xlen, stream->current_total,
479 stream->total_bytes);
480 GST_DEBUG_OBJECT (avi, "CBR perc convert bytes %" G_GUINT64_FORMAT
481 ", time %" GST_TIME_FORMAT, stream->current_total,
482 GST_TIME_ARGS (pos));
489 if (stream->strh->rate != 0) {
490 pos = gst_util_uint64_scale ((guint64) stream->current_entry *
491 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
493 pos = stream->current_entry * avi->avih->us_frame * GST_USECOND;
497 GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
498 gst_query_set_position (query, GST_FORMAT_TIME, pos);
500 GST_WARNING ("pos query failed");
503 case GST_QUERY_DURATION:
507 if (stream->strh->type != GST_RIFF_FCC_auds &&
508 stream->strh->type != GST_RIFF_FCC_vids) {
513 gst_query_parse_duration (query, &fmt, NULL);
516 case GST_FORMAT_TIME:
517 gst_query_set_duration (query, fmt, stream->duration);
519 case GST_FORMAT_DEFAULT:
522 GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
525 if (stream->idx_n >= 0)
526 gst_query_set_duration (query, fmt, stream->idx_n);
527 else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
528 stream->duration, &fmt, &dur))
529 gst_query_set_duration (query, fmt, dur);
538 case GST_QUERY_SEEKING:{
541 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
542 if (fmt == GST_FORMAT_TIME) {
543 gboolean seekable = TRUE;
545 if (avi->streaming) {
549 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
550 0, stream->duration);
555 case GST_QUERY_CONVERT:{
556 GstFormat src_fmt, dest_fmt;
557 gint64 src_val, dest_val;
559 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
560 if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
562 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
564 res = gst_pad_query_default (pad, query);
568 res = gst_pad_query_default (pad, query);
572 gst_object_unref (avi);
577 static const GstEventMask *
578 gst_avi_demux_get_event_mask (GstPad * pad)
580 static const GstEventMask masks[] = {
581 {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
590 gst_avi_demux_handle_sink_event (GstPad * pad, GstEvent * event)
593 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
595 GST_DEBUG_OBJECT (avi,
596 "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
598 switch (GST_EVENT_TYPE (event)) {
599 case GST_EVENT_NEWSEGMENT:
600 /* Drop NEWSEGMENT events, new ones are generated later */
601 gst_event_unref (event);
605 if (avi->state != GST_AVI_DEMUX_MOVI) {
606 gst_event_unref (event);
607 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
608 (NULL), ("got eos and didn't receive a complete header object"));
609 } else if (!gst_avi_demux_push_event (avi, event)) {
610 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
611 (NULL), ("got eos but no streams (yet)"));
616 res = gst_pad_event_default (pad, event);
620 gst_object_unref (avi);
626 gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
629 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
631 GST_DEBUG_OBJECT (avi,
632 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
634 switch (GST_EVENT_TYPE (event)) {
636 /* handle seeking only in pull mode */
637 if (!avi->streaming) {
638 res = gst_avi_demux_handle_seek (avi, pad, event);
639 gst_event_unref (event);
641 res = gst_pad_event_default (pad, event);
645 case GST_EVENT_NAVIGATION:
647 gst_event_unref (event);
650 res = gst_pad_event_default (pad, event);
654 gst_object_unref (avi);
659 /* streaming helper (push) */
662 * gst_avi_demux_peek_chunk_info:
664 * @tag: holder for tag
665 * @size: holder for tag size
667 * Peek next chunk info (tag and size)
669 * Returns: TRUE when one chunk info has been got
672 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
674 const guint8 *data = NULL;
676 if (gst_adapter_available (avi->adapter) < 8)
679 data = gst_adapter_peek (avi->adapter, 8);
680 *tag = GST_READ_UINT32_LE (data);
681 *size = GST_READ_UINT32_LE (data + 4);
687 * gst_avi_demux_peek_chunk:
689 * @tag: holder for tag
690 * @size: holder for tag size
692 * Peek enough data for one full chunk
694 * Returns: %TRUE when one chunk has been got
697 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
699 guint32 peek_size = 0;
702 if (!gst_avi_demux_peek_chunk_info (avi, tag, size))
705 /* size 0 -> empty data buffer would surprise most callers,
706 * large size -> do not bother trying to squeeze that into adapter,
707 * so we throw poor man's exception, which can be caught if caller really
708 * wants to handle 0 size chunk */
709 if (!(*size) || (*size) >= (1 << 30))
712 peek_size = (*size + 1) & ~1;
713 available = gst_adapter_available (avi->adapter);
715 GST_DEBUG_OBJECT (avi,
716 "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
717 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
719 if (available < (8 + peek_size))
727 GST_INFO_OBJECT (avi, "Failed to peek");
732 GST_INFO_OBJECT (avi,
733 "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size,
734 GST_FOURCC_ARGS (*tag));
735 /* chain should give up */
736 avi->abort_buffering = TRUE;
741 GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT,
742 available, 8 + peek_size);
750 * gst_avi_demux_parse_file_header:
751 * @element: caller element (used for errors/debug).
752 * @buf: input data to be used for parsing.
754 * "Open" a RIFF/AVI file. The buffer should be at least 12
755 * bytes long. Takes ownership of @buf.
757 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
758 * Throws an error, caller should error out (fatal).
761 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
766 stamp = gst_util_get_timestamp ();
768 /* riff_parse posts an error */
769 if (!gst_riff_parse_file_header (element, buf, &doctype))
772 if (doctype != GST_RIFF_RIFF_AVI)
775 stamp = gst_util_get_timestamp () - stamp;
776 GST_CAT_DEBUG (GST_CAT_PERFORMANCE, "parsing header %" GST_TIME_FORMAT,
777 GST_TIME_ARGS (stamp));
784 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
785 ("File is not an AVI file: %" GST_FOURCC_FORMAT,
786 GST_FOURCC_ARGS (doctype)));
792 * Read AVI file tag when streaming
795 gst_avi_demux_stream_init_push (GstAviDemux * avi)
797 if (gst_adapter_available (avi->adapter) >= 12) {
800 tmp = gst_adapter_take_buffer (avi->adapter, 12);
802 GST_DEBUG ("Parsing avi header");
803 if (!gst_avi_demux_parse_file_header (GST_ELEMENT (avi), tmp)) {
804 return GST_FLOW_ERROR;
806 GST_DEBUG ("header ok");
809 avi->state = GST_AVI_DEMUX_HEADER;
818 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
821 GstBuffer *buf = NULL;
823 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
824 if (res != GST_FLOW_OK)
826 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
836 GST_DEBUG_OBJECT (avi, "error parsing file header");
837 return GST_FLOW_ERROR;
841 /* AVI header handling */
844 * gst_avi_demux_parse_avih:
845 * @element: caller element (used for errors/debug).
846 * @buf: input data to be used for parsing.
847 * @avih: pointer to structure (filled in by function) containing
848 * stream information (such as flags, number of streams, etc.).
850 * Read 'avih' header. Discards buffer after use.
852 * Returns: TRUE on success, FALSE otherwise. Throws an error if
853 * the header is invalid. The caller should error out
857 gst_avi_demux_parse_avih (GstElement * element,
858 GstBuffer * buf, gst_riff_avih ** _avih)
865 if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
868 avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
870 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
871 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
872 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
873 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
874 avih->flags = GUINT32_FROM_LE (avih->flags);
875 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
876 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
877 avih->streams = GUINT32_FROM_LE (avih->streams);
878 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
879 avih->width = GUINT32_FROM_LE (avih->width);
880 avih->height = GUINT32_FROM_LE (avih->height);
881 avih->scale = GUINT32_FROM_LE (avih->scale);
882 avih->rate = GUINT32_FROM_LE (avih->rate);
883 avih->start = GUINT32_FROM_LE (avih->start);
884 avih->length = GUINT32_FROM_LE (avih->length);
888 GST_INFO_OBJECT (element, "avih tag found:");
889 GST_INFO_OBJECT (element, " us_frame %u", avih->us_frame);
890 GST_INFO_OBJECT (element, " max_bps %u", avih->max_bps);
891 GST_INFO_OBJECT (element, " pad_gran %u", avih->pad_gran);
892 GST_INFO_OBJECT (element, " flags 0x%08x", avih->flags);
893 GST_INFO_OBJECT (element, " tot_frames %u", avih->tot_frames);
894 GST_INFO_OBJECT (element, " init_frames %u", avih->init_frames);
895 GST_INFO_OBJECT (element, " streams %u", avih->streams);
896 GST_INFO_OBJECT (element, " bufsize %u", avih->bufsize);
897 GST_INFO_OBJECT (element, " width %u", avih->width);
898 GST_INFO_OBJECT (element, " height %u", avih->height);
899 GST_INFO_OBJECT (element, " scale %u", avih->scale);
900 GST_INFO_OBJECT (element, " rate %u", avih->rate);
901 GST_INFO_OBJECT (element, " start %u", avih->start);
902 GST_INFO_OBJECT (element, " length %u", avih->length);
905 gst_buffer_unref (buf);
912 GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL), ("No buffer"));
917 GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL),
918 ("Too small avih (%d available, %d needed)",
919 GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
920 gst_buffer_unref (buf);
926 * gst_avi_demux_parse_superindex:
927 * @avi: caller element (used for debugging/errors).
928 * @buf: input data to use for parsing.
929 * @locations: locations in the file (byte-offsets) that contain
930 * the actual indexes (see get_avi_demux_parse_subindex()).
931 * The array ends with GST_BUFFER_OFFSET_NONE.
933 * Reads superindex (openDML-2 spec stuff) from the provided data.
935 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
936 * on error, but they are not fatal.
939 gst_avi_demux_parse_superindex (GstAviDemux * avi,
940 GstBuffer * buf, guint64 ** _indexes)
950 size = buf ? GST_BUFFER_SIZE (buf) : 0;
954 data = GST_BUFFER_DATA (buf);
956 /* check type of index. The opendml2 specs state that
957 * there should be 4 dwords per array entry. Type can be
958 * either frame or field (and we don't care). */
959 if (GST_READ_UINT16_LE (data) != 4 ||
960 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
961 GST_WARNING_OBJECT (avi,
962 "Superindex for stream has unexpected "
963 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
964 GST_READ_UINT16_LE (data), data[2], data[3]);
965 bpe = GST_READ_UINT16_LE (data) * 4;
967 num = GST_READ_UINT32_LE (&data[4]);
969 indexes = g_new (guint64, num + 1);
970 for (i = 0; i < num; i++) {
971 if (size < 24 + bpe * (i + 1))
973 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
975 indexes[i] = GST_BUFFER_OFFSET_NONE;
978 gst_buffer_unref (buf);
985 GST_ERROR_OBJECT (avi,
986 "Not enough data to parse superindex (%d available, 24 needed)", size);
988 gst_buffer_unref (buf);
995 * gst_avi_demux_parse_subindex:
997 * @buf: input data to use for parsing.
998 * @stream: stream context.
999 * @entries_list: a list (returned by the function) containing all the
1000 * indexes parsed in this specific subindex. The first
1001 * entry is also a pointer to allocated memory that needs
1002 * to be free´ed. May be NULL if no supported indexes were
1005 * Reads superindex (openDML-2 spec stuff) from the provided data.
1006 * The buffer will be discarded after use.
1007 * The buffer should contain a GST_RIFF_TAG_ix?? chunk.
1009 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1010 * throw an error, caller should bail out asap.
1013 gst_avi_demux_parse_subindex (GstAviDemux * avi,
1014 GstBuffer * buf, GstAviStream * stream, GList ** _entries_list)
1016 guint8 *data = GST_BUFFER_DATA (buf);
1020 gst_avi_index_entry *entries, *entry;
1021 GList *entries_list = NULL;
1024 #ifndef GST_DISABLE_GST_DEBUG
1025 gulong _nr_keyframes = 0;
1028 *_entries_list = NULL;
1030 size = buf ? GST_BUFFER_SIZE (buf) : 0;
1036 /* We don't support index-data yet */
1038 goto not_implemented;
1040 /* check type of index. The opendml2 specs state that
1041 * there should be 4 dwords per array entry. Type can be
1042 * either frame or field (and we don't care). */
1043 bpe = (data[2] & 0x01) ? 12 : 8;
1044 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1045 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1046 GST_WARNING_OBJECT (avi,
1047 "Superindex for stream %d has unexpected "
1048 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1049 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1050 bpe = GST_READ_UINT16_LE (data) * 4;
1052 num = GST_READ_UINT32_LE (&data[4]);
1053 baseoff = GST_READ_UINT64_LE (&data[12]);
1055 /* If there's nothing, just return ! */
1059 if (!(entries = g_try_new (gst_avi_index_entry, num)))
1062 GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num);
1064 for (i = 0; i < num; i++) {
1067 entry = &entries[i];
1069 if (size < 24 + bpe * (i + 1))
1073 entry->offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1074 entry->size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1076 (entry->size & 0x80000000) ? 0 : GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
1077 entry->size &= ~0x80000000;
1078 entry->index_nr = i;
1079 entry->stream_nr = stream->num;
1081 if (stream->strh->type == GST_RIFF_FCC_auds) {
1082 /* all audio frames are keyframes */
1083 entry->flags |= GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
1085 #ifndef GST_DISABLE_GST_DEBUG
1086 if (entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
1090 /* stream duration unknown, now we can calculate it */
1091 if (stream->idx_duration == -1)
1092 stream->idx_duration = 0;
1095 entry->ts = stream->idx_duration;
1096 if (stream->is_vbr) {
1097 /* VBR stream next timestamp */
1098 if (stream->strh->type == GST_RIFF_FCC_auds) {
1099 next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
1100 stream->total_blocks + 1);
1102 next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
1106 /* CBR get next timestamp */
1107 next_ts = avi_stream_convert_bytes_to_time_unchecked (stream,
1108 stream->total_bytes + entry->size);
1110 /* duration is next - current */
1111 entry->dur = next_ts - entry->ts;
1113 /* stream position */
1114 entry->bytes_before = stream->total_bytes;
1115 entry->frames_before = stream->idx_n;
1117 stream->total_bytes += entry->size;
1119 if (stream->strh->type == GST_RIFF_FCC_auds) {
1120 if (stream->strf.auds->blockalign > 0)
1121 stream->total_blocks +=
1122 (entry->size + stream->strf.auds->blockalign -
1123 1) / stream->strf.auds->blockalign;
1125 stream->total_blocks++;
1127 stream->idx_duration = next_ts;
1129 entries_list = g_list_prepend (entries_list, entry);
1132 GST_INFO_OBJECT (avi, "Parsed index, %6u/%6u entries, %5lu keyframes, "
1133 "entry size = %2u, total size = %10d", i, num, _nr_keyframes,
1134 (gint) sizeof (gst_avi_index_entry),
1135 (gint) (i * sizeof (gst_avi_index_entry)));
1137 gst_buffer_unref (buf);
1140 *_entries_list = g_list_reverse (entries_list);
1150 GST_ERROR_OBJECT (avi,
1151 "Not enough data to parse subindex (%d available, 24 needed)", size);
1153 gst_buffer_unref (buf);
1154 return TRUE; /* continue */
1158 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1159 ("Subindex-is-data is not implemented"));
1160 gst_buffer_unref (buf);
1165 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1166 ("Cannot allocate memory for %u*%u=%u bytes",
1167 (guint) sizeof (gst_avi_index_entry), num,
1168 (guint) sizeof (gst_avi_index_entry) * num));
1169 gst_buffer_unref (buf);
1177 * Read AVI index when streaming
1180 gst_avi_demux_read_subindexes_push (GstAviDemux * avi,
1181 GList ** index, GList ** alloc_list)
1184 guint32 tag = 0, size;
1185 GstBuffer *buf = NULL;
1188 GST_DEBUG_OBJECT (avi, "gst_avi_demux_read_subindexes_push for %d streams",
1191 for (n = 0; n < avi->num_streams; n++) {
1192 GstAviStream *stream = &avi->stream[n];
1194 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1195 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1197 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1198 '0' + stream->num % 10)) &&
1199 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1200 '0' + stream->num % 10, 'i', 'x'))) {
1201 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1202 GST_FOURCC_ARGS (tag));
1206 avi->offset += 8 + GST_ROUND_UP_2 (size);
1208 buf = gst_buffer_new ();
1209 GST_BUFFER_DATA (buf) = gst_adapter_take (avi->adapter, size);
1210 GST_BUFFER_SIZE (buf) = size;
1212 if (!gst_avi_demux_parse_subindex (avi, buf, stream, &list))
1215 GST_DEBUG_OBJECT (avi, " adding %d entries", g_list_length (list));
1216 *alloc_list = g_list_append (*alloc_list, list->data);
1217 *index = g_list_concat (*index, list);
1221 g_free (stream->indexes);
1222 stream->indexes = NULL;
1224 GST_DEBUG_OBJECT (avi, "index %s", ((*index) ? "!= 0" : "== 0"));
1233 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi,
1234 GList ** index, GList ** alloc_list)
1241 GST_DEBUG_OBJECT (avi, "gst_avi_demux_read_subindexes_pull for %d streams",
1244 for (n = 0; n < avi->num_streams; n++) {
1245 GstAviStream *stream = &avi->stream[n];
1247 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1248 if (gst_riff_read_chunk (GST_ELEMENT (avi), avi->sinkpad,
1249 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1251 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1252 '0' + stream->num % 10)) &&
1253 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1254 '0' + stream->num % 10, 'i', 'x'))) {
1255 /* Some ODML files (created by god knows what muxer) have a ##ix format
1256 * instead of the 'official' ix##. They are still valid though. */
1257 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1258 GST_FOURCC_ARGS (tag));
1259 gst_buffer_unref (buf);
1263 if (!gst_avi_demux_parse_subindex (avi, buf, stream, &list))
1266 GST_DEBUG_OBJECT (avi, " adding %5d entries, total %2d %5d",
1267 g_list_length (list), g_list_length (*alloc_list),
1268 g_list_length (*index));
1269 *alloc_list = g_list_append (*alloc_list, list->data);
1270 *index = g_list_concat (*index, list);
1274 g_free (stream->indexes);
1275 stream->indexes = NULL;
1277 GST_DEBUG_OBJECT (avi, "index %s", ((*index) ? "!= 0" : "== 0"));
1282 * gst_avi_demux_riff_parse_vprp:
1283 * @element: caller element (used for debugging/error).
1284 * @buf: input data to be used for parsing, stripped from header.
1285 * @vprp: a pointer (returned by this function) to a filled-in vprp
1286 * structure. Caller should free it.
1288 * Parses a video stream´s vprp. This function takes ownership of @buf.
1290 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1291 * should be skipped on error, but it is not fatal.
1294 gst_avi_demux_riff_parse_vprp (GstElement * element,
1295 GstBuffer * buf, gst_riff_vprp ** _vprp)
1297 gst_riff_vprp *vprp;
1300 g_return_val_if_fail (buf != NULL, FALSE);
1301 g_return_val_if_fail (_vprp != NULL, FALSE);
1303 if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1306 vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1308 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1309 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1310 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1311 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1312 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1313 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1314 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1315 vprp->width = GUINT32_FROM_LE (vprp->width);
1316 vprp->height = GUINT32_FROM_LE (vprp->height);
1317 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1321 /* calculate fields based on size */
1322 k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
1324 if (vprp->fields > k) {
1325 GST_WARNING_OBJECT (element,
1326 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1329 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1330 GST_WARNING_OBJECT (element,
1331 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1332 GST_RIFF_VPRP_VIDEO_FIELDS);
1333 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1335 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1336 for (k = 0; k < vprp->fields; k++) {
1337 gst_riff_vprp_video_field_desc *fd;
1339 fd = &vprp->field_info[k];
1340 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1341 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1342 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1343 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1344 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1345 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1346 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1347 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1352 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1353 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1354 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1355 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1356 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1357 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1358 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1359 vprp->aspect & 0xffff);
1360 GST_INFO_OBJECT (element, " width %d", vprp->width);
1361 GST_INFO_OBJECT (element, " height %d", vprp->height);
1362 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1363 for (k = 0; k < vprp->fields; k++) {
1364 gst_riff_vprp_video_field_desc *fd;
1366 fd = &(vprp->field_info[k]);
1367 GST_INFO_OBJECT (element, " field %u description:", k);
1368 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1369 fd->compressed_bm_height);
1370 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1371 fd->compressed_bm_width);
1372 GST_INFO_OBJECT (element, " valid_bm_height %d",
1373 fd->valid_bm_height);
1374 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1375 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1376 fd->valid_bm_x_offset);
1377 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1378 fd->valid_bm_y_offset);
1379 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1380 fd->video_x_t_offset);
1381 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1384 gst_buffer_unref (buf);
1393 GST_ERROR_OBJECT (element,
1394 "Too small vprp (%d available, at least %d needed)",
1395 GST_BUFFER_SIZE (buf),
1396 (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1397 gst_buffer_unref (buf);
1403 * gst_avi_demux_parse_stream:
1404 * @avi: calling element (used for debugging/errors).
1405 * @buf: input buffer used to parse the stream.
1407 * Parses all subchunks in a strl chunk (which defines a single
1408 * stream). Discards the buffer after use. This function will
1409 * increment the stream counter internally.
1411 * Returns: whether the stream was identified successfully.
1412 * Errors are not fatal. It does indicate the stream
1416 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1418 GstAviStream *stream;
1419 GstElementClass *klass;
1420 GstPadTemplate *templ;
1421 GstBuffer *sub = NULL;
1424 gchar *codec_name = NULL, *padname = NULL;
1425 const gchar *tag_name;
1426 GstCaps *caps = NULL;
1428 GstElement *element;
1429 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1430 gst_riff_vprp *vprp = NULL;
1432 element = GST_ELEMENT_CAST (avi);
1434 GST_DEBUG_OBJECT (avi, "Parsing stream");
1436 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1437 GST_WARNING_OBJECT (avi,
1438 "maximum no of streams (%d) exceeded, ignoring stream",
1439 GST_AVI_DEMUX_MAX_STREAMS);
1440 gst_buffer_unref (buf);
1441 /* not a fatal error, let's say */
1445 stream = &avi->stream[avi->num_streams];
1447 /* initial settings */
1448 stream->idx_duration = GST_CLOCK_TIME_NONE;
1449 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1450 stream->duration = GST_CLOCK_TIME_NONE;
1452 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1453 /* sub can be NULL if the chunk is empty */
1455 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1456 GST_FOURCC_ARGS (tag));
1460 case GST_RIFF_TAG_strh:
1462 gst_riff_strh *strh;
1465 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1468 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1469 /* ownership given away */
1471 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1475 strh = stream->strh;
1476 /* sanity check; stream header frame rate matches global header
1478 if (stream->strh->type == GST_RIFF_FCC_vids) {
1480 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1482 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1483 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1484 "frame duration = %d ms", strh->rate, strh->scale,
1485 (gint) (s_dur / GST_MSECOND));
1486 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1487 strh->rate = GST_SECOND / GST_USECOND;
1488 strh->scale = h_dur / GST_USECOND;
1489 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1490 strh->rate, strh->scale);
1493 /* determine duration as indicated by header */
1494 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1495 strh->scale, GST_SECOND, (guint64) strh->rate);
1496 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1497 GST_TIME_ARGS (stream->hdr_duration));
1498 if (stream->hdr_duration == 0)
1499 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1504 case GST_RIFF_TAG_strf:
1506 gboolean res = FALSE;
1509 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
1513 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
1516 switch (stream->strh->type) {
1517 case GST_RIFF_FCC_vids:
1518 stream->is_vbr = TRUE;
1519 res = gst_riff_parse_strf_vids (element, sub,
1520 &stream->strf.vids, &stream->extradata);
1522 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
1524 case GST_RIFF_FCC_auds:
1525 stream->is_vbr = (stream->strh->samplesize == 0)
1526 && stream->strh->scale > 1;
1528 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
1529 &stream->extradata);
1531 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
1532 stream->is_vbr, res);
1534 case GST_RIFF_FCC_iavs:
1535 stream->is_vbr = TRUE;
1536 res = gst_riff_parse_strf_iavs (element, sub,
1537 &stream->strf.iavs, &stream->extradata);
1539 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
1541 case GST_RIFF_FCC_txts:
1542 /* nothing to parse here */
1543 stream->is_vbr = (stream->strh->samplesize == 0)
1544 && (stream->strh->scale > 1);
1548 GST_ERROR_OBJECT (avi,
1549 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
1550 GST_FOURCC_ARGS (stream->strh->type));
1554 gst_buffer_unref (sub);
1562 case GST_RIFF_TAG_vprp:
1565 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
1569 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
1573 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
1577 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
1578 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
1579 /* not considered fatal */
1587 case GST_RIFF_TAG_strd:
1588 if (stream->initdata)
1589 gst_buffer_unref (stream->initdata);
1590 stream->initdata = sub;
1593 case GST_RIFF_TAG_strn:
1594 g_free (stream->name);
1597 g_strndup ((gchar *) GST_BUFFER_DATA (sub),
1598 (gsize) GST_BUFFER_SIZE (sub));
1599 gst_buffer_unref (sub);
1602 stream->name = g_strdup ("");
1604 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
1607 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
1608 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
1609 '0' + avi->num_streams % 10)) {
1610 g_free (stream->indexes);
1611 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
1612 stream->superindex = TRUE;
1616 GST_WARNING_OBJECT (avi,
1617 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
1618 GST_FOURCC_ARGS (tag));
1620 case GST_RIFF_TAG_JUNK:
1624 gst_buffer_unref (sub);
1630 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
1635 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
1639 /* get class to figure out the template */
1640 klass = GST_ELEMENT_GET_CLASS (avi);
1642 /* we now have all info, let´s set up a pad and a caps and be done */
1643 /* create stream name + pad */
1644 switch (stream->strh->type) {
1645 case GST_RIFF_FCC_vids:{
1648 fourcc = (stream->strf.vids->compression) ?
1649 stream->strf.vids->compression : stream->strh->fcc_handler;
1650 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
1651 templ = gst_element_class_get_pad_template (klass, "video_%02d");
1652 caps = gst_riff_create_video_caps (fourcc, stream->strh,
1653 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
1655 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
1656 GST_TYPE_FOURCC, fourcc, NULL);
1657 } else if (got_vprp && vprp) {
1658 guint32 aspect_n, aspect_d;
1661 aspect_n = vprp->aspect >> 16;
1662 aspect_d = vprp->aspect & 0xffff;
1663 /* calculate the pixel aspect ratio using w/h and aspect ratio */
1664 n = aspect_n * stream->strf.vids->height;
1665 d = aspect_d * stream->strf.vids->width;
1667 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
1669 /* very local, not needed elsewhere */
1673 tag_name = GST_TAG_VIDEO_CODEC;
1674 avi->num_v_streams++;
1677 case GST_RIFF_FCC_auds:{
1678 padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
1679 templ = gst_element_class_get_pad_template (klass, "audio_%02d");
1680 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
1681 stream->strh, stream->strf.auds, stream->extradata,
1682 stream->initdata, &codec_name);
1684 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
1685 G_TYPE_INT, stream->strf.auds->format, NULL);
1687 tag_name = GST_TAG_AUDIO_CODEC;
1688 avi->num_a_streams++;
1691 case GST_RIFF_FCC_iavs:{
1692 guint32 fourcc = stream->strh->fcc_handler;
1694 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
1695 templ = gst_element_class_get_pad_template (klass, "video_%02d");
1696 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
1697 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
1699 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
1700 GST_TYPE_FOURCC, fourcc, NULL);
1702 tag_name = GST_TAG_VIDEO_CODEC;
1703 avi->num_v_streams++;
1706 case GST_RIFF_FCC_txts:{
1707 padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
1708 templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
1709 caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
1711 avi->num_t_streams++;
1715 g_assert_not_reached ();
1718 /* no caps means no stream */
1720 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
1724 GST_DEBUG_OBJECT (element, "codec-name=%s",
1725 (codec_name ? codec_name : "NULL"));
1726 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
1728 /* set proper settings and add it */
1730 gst_object_unref (stream->pad);
1731 pad = stream->pad = gst_pad_new_from_template (templ, padname);
1732 stream->last_flow = GST_FLOW_OK;
1733 stream->discont = TRUE;
1736 gst_pad_use_fixed_caps (pad);
1738 gst_pad_set_formats_function (pad,
1739 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
1740 gst_pad_set_event_mask_function (pad,
1741 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
1743 gst_pad_set_event_function (pad,
1744 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
1745 gst_pad_set_query_type_function (pad,
1746 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
1747 gst_pad_set_query_function (pad,
1748 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
1750 gst_pad_set_convert_function (pad,
1751 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
1754 stream->num = avi->num_streams;
1755 stream->total_bytes = 0;
1757 stream->total_blocks = 0;
1758 stream->current_entry = 0;
1759 stream->current_total = 0;
1760 gst_pad_set_element_private (pad, stream);
1762 gst_pad_set_caps (pad, caps);
1763 gst_pad_set_active (pad, TRUE);
1764 gst_element_add_pad (GST_ELEMENT (avi), pad);
1765 GST_LOG_OBJECT (element, "Added pad %s with caps %" GST_PTR_FORMAT,
1766 GST_PAD_NAME (pad), caps);
1767 gst_caps_unref (caps);
1771 if (!stream->taglist)
1772 stream->taglist = gst_tag_list_new ();
1774 avi->got_tags = TRUE;
1776 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
1778 g_free (codec_name);
1781 gst_buffer_unref (buf);
1788 /* unref any mem that may be in use */
1790 gst_buffer_unref (buf);
1792 gst_buffer_unref (sub);
1794 g_free (codec_name);
1795 g_free (stream->strh);
1796 g_free (stream->strf.data);
1797 g_free (stream->name);
1798 g_free (stream->indexes);
1799 if (stream->initdata)
1800 gst_buffer_unref (stream->initdata);
1801 if (stream->extradata)
1802 gst_buffer_unref (stream->extradata);
1803 memset (stream, 0, sizeof (GstAviStream));
1810 * gst_avi_demux_parse_odml:
1811 * @avi: calling element (used for debug/error).
1812 * @buf: input buffer to be used for parsing.
1814 * Read an openDML-2.0 extension header. Fills in the frame number
1815 * in the avi demuxer object when reading succeeds.
1818 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
1822 GstBuffer *sub = NULL;
1824 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
1827 case GST_RIFF_TAG_dmlh:{
1828 gst_riff_dmlh dmlh, *_dmlh;
1831 /* sub == NULL is possible and means an empty buffer */
1832 size = sub ? GST_BUFFER_SIZE (sub) : 0;
1835 if (size < sizeof (gst_riff_dmlh)) {
1836 GST_ERROR_OBJECT (avi,
1837 "DMLH entry is too small (%d bytes, %d needed)",
1838 size, (int) sizeof (gst_riff_dmlh));
1841 _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
1842 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
1844 GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u",
1847 avi->avih->tot_frames = dmlh.totalframes;
1852 GST_WARNING_OBJECT (avi,
1853 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
1854 GST_FOURCC_ARGS (tag));
1856 case GST_RIFF_TAG_JUNK:
1858 /* skip and move to next chunk */
1860 gst_buffer_unref (sub);
1867 gst_buffer_unref (buf);
1872 gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream)
1874 return stream->idx_n - 1;
1877 /* find a previous entry in the index with the given flags */
1879 gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream,
1880 guint last, gboolean keyframe)
1882 GstAviIndexEntry *entry;
1885 for (i = last; i > 0; i--) {
1886 entry = &stream->index[i - 1];
1887 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
1895 gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream,
1896 guint last, gboolean keyframe)
1898 GstAviIndexEntry *entry;
1901 for (i = last + 1; i < stream->idx_n; i++) {
1902 entry = &stream->index[i];
1903 if (!keyframe || ENTRY_IS_KEYFRAME (entry)) {
1907 return stream->idx_n - 1;
1911 gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total)
1913 if (entry->total < *total)
1915 else if (entry->total > *total)
1921 * gst_avi_index_entry:
1923 * @stream: the stream
1924 * @time: seek time position
1926 * Finds the index entry which time is less or equal than the requested time.
1928 * Returns: the found position in the index.
1931 gst_avi_demux_index_for_time (GstAviDemux * avi,
1932 GstAviStream * stream, guint64 time)
1937 GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time));
1939 /* easy (and common) cases */
1940 if (time == 0 || stream->idx_n == 0)
1942 if (time >= stream->idx_duration)
1943 return stream->idx_n - 1;
1945 /* figure out where we need to go. For that we convert the time to an
1946 * index entry or we convert it to a total and then do a binary search. */
1947 if (stream->is_vbr) {
1948 /* VBR stream next timestamp */
1949 if (stream->strh->type == GST_RIFF_FCC_auds) {
1950 total = avi_stream_convert_time_to_frames_unchecked (stream, time);
1952 index = avi_stream_convert_time_to_frames_unchecked (stream, time);
1955 /* constant rate stream */
1956 total = avi_stream_convert_time_to_bytes_unchecked (stream, time);
1960 GstAviIndexEntry *entry;
1962 /* no index, find index with binary search on total */
1963 GST_LOG_OBJECT (avi, "binary search for entry with total %"
1964 G_GUINT64_FORMAT, total);
1966 entry = gst_util_array_binary_search (stream->index,
1967 stream->idx_n, sizeof (GstAviIndexEntry),
1968 (GCompareDataFunc) gst_avi_demux_index_entry_search,
1969 GST_SEARCH_MODE_BEFORE, &total, NULL);
1971 if (entry == NULL) {
1972 GST_LOG_OBJECT (avi, "not found, assume index 0");
1975 index = entry - stream->index;
1976 GST_LOG_OBJECT (avi, "found at %u", index);
1979 GST_LOG_OBJECT (avi, "converted time to index %u", index);
1986 gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream,
1987 guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end,
1988 guint64 * offset, guint64 * offset_end)
1990 GstAviIndexEntry *entry;
1992 entry = &stream->index[entry_n];
1994 if (stream->is_vbr) {
1995 /* VBR stream next timestamp */
1996 if (stream->strh->type == GST_RIFF_FCC_auds) {
1999 avi_stream_convert_frames_to_time_unchecked (stream, entry->total);
2001 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
2002 entry->total + entry->size);
2006 avi_stream_convert_frames_to_time_unchecked (stream, entry_n);
2008 *ts_end = avi_stream_convert_frames_to_time_unchecked (stream,
2012 /* constant rate stream */
2015 avi_stream_convert_bytes_to_time_unchecked (stream, entry->total);
2017 *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream,
2018 entry->total + entry->size);
2020 if (stream->strh->type == GST_RIFF_FCC_vids) {
2021 /* video offsets are the frame number */
2025 *offset_end = entry_n + 1;
2027 /* no offsets for audio */
2037 * gst_avi_demux_parse_index:
2038 * @avi: calling element (used for debugging/errors).
2039 * @buf: buffer containing the full index.
2041 * Read index entries from the provided buffer.
2042 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2045 gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf)
2051 gst_riff_index_entry *index;
2053 GstAviStream *stream;
2054 #ifndef GST_DISABLE_GST_DEBUG
2055 guint total_idx = 0, total_max = 0;
2061 data = GST_BUFFER_DATA (buf);
2062 size = GST_BUFFER_SIZE (buf);
2064 stamp = gst_util_get_timestamp ();
2066 num = size / sizeof (gst_riff_index_entry);
2070 index = (gst_riff_index_entry *) data;
2072 pos_before = avi->offset;
2073 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2075 for (i = 0, n = 0; i < num; i++) {
2076 GstAviIndexEntry entry;
2080 id = GST_READ_UINT32_LE (&index[i].id);
2081 entry.offset = GST_READ_UINT32_LE (&index[i].offset);
2083 /* some sanity checks */
2084 if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 ||
2085 (entry.offset == 0 && n > 0)))
2088 /* figure out if the index is 0 based or relative to the MOVI start */
2089 if (G_UNLIKELY (n == 0)) {
2090 if (entry.offset < pos_before)
2091 avi->index_offset = pos_before + 8;
2093 avi->index_offset = 0;
2094 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2097 /* get the stream for this entry */
2098 stream_nr = CHUNKID_TO_STREAMNR (id);
2099 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2100 GST_WARNING_OBJECT (avi,
2101 "Index entry %d has invalid stream nr %d", i, stream_nr);
2104 stream = &avi->stream[stream_nr];
2105 if (G_UNLIKELY (!stream->strh)) {
2106 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2111 if (stream->strh->type == GST_RIFF_FCC_auds) {
2112 /* all audio frames are keyframes */
2113 ENTRY_SET_KEYFRAME (&entry);
2114 stream->n_keyframes++;
2117 /* else read flags */
2118 flags = GST_READ_UINT32_LE (&index[i].flags);
2119 if (flags & GST_RIFF_IF_KEYFRAME) {
2120 ENTRY_SET_KEYFRAME (&entry);
2121 stream->n_keyframes++;
2123 ENTRY_UNSET_KEYFRAME (&entry);
2128 entry.size = GST_READ_UINT32_LE (&index[i].size);
2131 entry.total = stream->total_bytes;
2132 stream->total_bytes += entry.size;
2133 if (stream->strh->type == GST_RIFF_FCC_auds) {
2134 gint blockalign = stream->strf.auds->blockalign;
2136 stream->total_blocks += DIV_ROUND_UP (entry.size, blockalign);
2138 stream->total_blocks++;
2141 /* add to the index */
2142 if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) {
2143 /* we need to make some more room */
2144 if (stream->idx_max == 0) {
2145 /* initial size guess, assume each stream has an equal amount of entries,
2146 * overshoot with at least 8K */
2148 (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry));
2150 stream->idx_max += 8192 / sizeof (GstAviIndexEntry);
2151 GST_CAT_DEBUG (GST_CAT_PERFORMANCE, "expanded index to %u",
2154 stream->index = g_try_renew (GstAviIndexEntry, stream->index,
2156 if (G_UNLIKELY (!stream->index))
2160 GST_LOG_OBJECT (avi,
2161 "Adding stream %d, index entry %d, kf %d, size %u "
2162 ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream_nr,
2163 stream->idx_n, ENTRY_IS_KEYFRAME (&entry), entry.size, entry.offset,
2167 stream->index[stream->idx_n++] = entry;
2171 /* get stream stats now */
2172 for (i = 0; i < avi->num_streams; i++) {
2173 GstAviIndexEntry *entry;
2176 if (G_UNLIKELY (!(stream = &avi->stream[i])))
2178 if (G_UNLIKELY (!stream->strh))
2180 if (G_UNLIKELY (!stream->index || stream->idx_n == 0))
2183 entry = &stream->index[stream->idx_n - 1];
2184 total = entry->total + entry->size;
2186 /* calculate duration */
2187 if (stream->is_vbr) {
2188 /* VBR stream next timestamp */
2189 if (stream->strh->type == GST_RIFF_FCC_auds) {
2190 stream->idx_duration =
2191 avi_stream_convert_frames_to_time_unchecked (stream, total);
2193 stream->idx_duration =
2194 avi_stream_convert_frames_to_time_unchecked (stream, stream->idx_n);
2197 /* constant rate stream */
2198 stream->idx_duration = avi_stream_convert_bytes_to_time_unchecked (stream,
2201 #ifndef GST_DISABLE_GST_DEBUG
2202 total_idx += stream->idx_n;
2203 total_max += stream->idx_max;
2205 GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, "
2206 "%5lu keyframes, entry size = %2u, total size = %10u, allocated %10u",
2207 i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n,
2208 stream->n_keyframes, (guint) sizeof (GstAviIndexEntry),
2209 (guint) (stream->idx_n * sizeof (GstAviIndexEntry)),
2210 (guint) (stream->idx_max * sizeof (GstAviIndexEntry)));
2212 #ifndef GST_DISABLE_GST_DEBUG
2213 total_idx *= sizeof (GstAviIndexEntry);
2214 total_max *= sizeof (GstAviIndexEntry);
2216 GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted",
2217 total_max, total_idx, total_max - total_idx);
2219 stamp = gst_util_get_timestamp () - stamp;
2220 GST_CAT_DEBUG (GST_CAT_PERFORMANCE, "parsing index %" GST_TIME_FORMAT,
2221 GST_TIME_ARGS (stamp));
2228 GST_DEBUG_OBJECT (avi, "empty index");
2233 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2234 ("Cannot allocate memory for %u*%u=%u bytes",
2235 (guint) sizeof (GstAviIndexEntry), num,
2236 (guint) sizeof (GstAviIndexEntry) * num));
2243 * gst_avi_demux_parse_index:
2244 * @avi: calling element (used for debugging/errors).
2245 * @buf: buffer containing the full index.
2246 * @entries_list: list (returned by this function) containing the index
2247 * entries parsed from the buffer. The first in the list
2248 * is also a pointer to the allocated data and should be
2249 * free'ed at some point.
2251 * Read index entries from the provided buffer. Takes ownership of @buf.
2252 * The buffer should contain a GST_RIFF_TAG_idx1 chunk.
2255 gst_avi_demux_parse_index (GstAviDemux * avi,
2256 GstBuffer * buf, GList ** _entries_list)
2258 guint64 pos_before = avi->offset;
2259 gst_avi_index_entry *entries = NULL;
2261 GList *entries_list = NULL;
2263 #ifndef GST_DISABLE_GST_DEBUG
2264 gulong _nr_keyframes = 0;
2268 if (!buf || !GST_BUFFER_SIZE (buf)) {
2269 *_entries_list = NULL;
2270 GST_DEBUG ("empty index");
2272 gst_buffer_unref (buf);
2276 stamp = gst_util_get_timestamp ();
2278 data = GST_BUFFER_DATA (buf);
2279 num = GST_BUFFER_SIZE (buf) / sizeof (gst_riff_index_entry);
2280 if (!(entries = g_try_new (gst_avi_index_entry, num)))
2283 GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num);
2285 for (i = 0, n = 0; i < num; i++) {
2287 gst_riff_index_entry entry, *_entry;
2288 GstAviStream *stream;
2290 gst_avi_index_entry *target;
2292 _entry = &((gst_riff_index_entry *) data)[i];
2293 entry.id = GST_READ_UINT32_LE (&_entry->id);
2294 entry.offset = GST_READ_UINT32_LE (&_entry->offset);
2295 entry.flags = GST_READ_UINT32_LE (&_entry->flags);
2296 entry.size = GST_READ_UINT32_LE (&_entry->size);
2297 target = &entries[n];
2299 if (entry.id == GST_RIFF_rec || entry.id == 0 ||
2300 (entry.offset == 0 && n > 0))
2303 stream_nr = CHUNKID_TO_STREAMNR (entry.id);
2304 if (stream_nr >= avi->num_streams) {
2305 GST_WARNING_OBJECT (avi,
2306 "Index entry %d has invalid stream nr %d", i, stream_nr);
2309 target->stream_nr = stream_nr;
2310 stream = &avi->stream[stream_nr];
2312 if (!stream->strh) {
2313 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2317 target->index_nr = i;
2319 (entry.flags & GST_RIFF_IF_KEYFRAME) ? GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME
2321 target->size = entry.size;
2322 target->offset = entry.offset + 8;
2324 /* figure out if the index is 0 based or relative to the MOVI start */
2326 if (target->offset < pos_before)
2327 avi->index_offset = pos_before + 8;
2329 avi->index_offset = 0;
2330 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2333 if (stream->strh->type == GST_RIFF_FCC_auds) {
2334 /* all audio frames are keyframes */
2335 target->flags |= GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
2337 #ifndef GST_DISABLE_GST_DEBUG
2338 if (target->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
2342 /* stream duration unknown, now we can calculate it */
2343 if (stream->idx_duration == -1)
2344 stream->idx_duration = 0;
2347 target->ts = stream->idx_duration;
2348 if (stream->is_vbr) {
2349 /* VBR stream next timestamp */
2350 if (stream->strh->type == GST_RIFF_FCC_auds) {
2351 next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
2352 stream->total_blocks + 1);
2354 next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
2358 /* constant rate stream */
2359 next_ts = avi_stream_convert_bytes_to_time_unchecked (stream,
2360 stream->total_bytes + target->size);
2362 /* duration is next - current */
2363 target->dur = next_ts - target->ts;
2365 /* stream position */
2366 target->bytes_before = stream->total_bytes;
2367 target->frames_before = stream->idx_n;
2369 stream->total_bytes += target->size;
2371 if (stream->strh->type == GST_RIFF_FCC_auds) {
2372 if (stream->strf.auds->blockalign > 0)
2373 stream->total_blocks +=
2374 (target->size + stream->strf.auds->blockalign -
2375 1) / stream->strf.auds->blockalign;
2377 stream->total_blocks++;
2379 stream->idx_duration = next_ts;
2381 GST_LOG_OBJECT (avi,
2382 "Adding index entry %d (%6u), flags %02x, stream %d, size %u "
2383 ", offset %" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT ", dur %"
2385 target->index_nr, stream->idx_n - 1, target->flags,
2386 target->stream_nr, target->size, target->offset,
2387 GST_TIME_ARGS (target->ts), GST_TIME_ARGS (target->dur));
2388 entries_list = g_list_prepend (entries_list, target);
2393 GST_INFO_OBJECT (avi, "Parsed index, %6u/%6u entries, %5lu keyframes, "
2394 "entry size = %2u, total size = %10u", n, num, _nr_keyframes,
2395 (guint) sizeof (gst_avi_index_entry),
2396 (guint) (n * sizeof (gst_avi_index_entry)));
2398 gst_buffer_unref (buf);
2401 *_entries_list = g_list_reverse (entries_list);
2406 stamp = gst_util_get_timestamp () - stamp;
2407 GST_CAT_DEBUG (GST_CAT_PERFORMANCE, "parsing index %" GST_TIME_FORMAT,
2408 GST_TIME_ARGS (stamp));
2415 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2416 ("Cannot allocate memory for %u*%u=%u bytes",
2417 (guint) sizeof (gst_avi_index_entry), num,
2418 (guint) sizeof (gst_avi_index_entry) * 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);
2484 gst_buffer_unref (buf);
2486 #ifndef GST_DISABLE_GST_DEBUG
2487 /* debug our indexes */
2490 GstAviStream *stream;
2492 for (i = 0; i < avi->num_streams; i++) {
2493 stream = &avi->stream[i];
2494 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2495 i, stream->idx_n, stream->total_bytes);
2504 GST_DEBUG_OBJECT (avi,
2505 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2510 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2511 gst_buffer_unref (buf);
2516 GST_WARNING_OBJECT (avi,
2517 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2518 GST_FOURCC_ARGS (tag));
2519 gst_buffer_unref (buf);
2524 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2525 gst_buffer_unref (buf);
2532 * Sync to next data chunk.
2535 gst_avi_demux_skip (GstAviDemux * avi, gboolean prevent_eos)
2537 GstRiffRead *riff = GST_RIFF_READ (avi);
2540 guint64 pos, length;
2544 pos = gst_bytestream_tell (riff->bs);
2545 length = gst_bytestream_length (riff->bs);
2547 if (pos + 8 > length)
2550 if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
2553 size = GST_READ_UINT32_LE (&data[4]);
2557 /* Note, we're going to skip which might involve seeks. Therefore,
2558 * we need 1 byte more! */
2559 if (pos + 8 + size >= length)
2563 return gst_riff_read_skip (riff);
2567 gst_avi_demux_sync (GstAviDemux * avi, guint32 * ret_tag, gboolean prevent_eos)
2569 GstRiffRead *riff = GST_RIFF_READ (avi);
2571 guint64 length = gst_bytestream_length (riff->bs);
2573 if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
2576 /* peek first (for the end of this 'list/movi' section) */
2577 if (!(tag = gst_riff_peek_tag (riff, &avi->level_up)))
2580 /* if we're at top-level, we didn't read the 'movi'
2581 * list tag yet. This can also be 'AVIX' in case of
2582 * openDML-2.0 AVI files. Lastly, it might be idx1,
2583 * in which case we skip it so we come at EOS. */
2585 if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
2588 if (!(tag = gst_riff_peek_tag (riff, NULL)))
2592 case GST_RIFF_TAG_LIST:
2593 if (!(tag = gst_riff_peek_list (riff)))
2597 case GST_RIFF_LIST_AVIX:
2598 if (!gst_riff_read_list (riff, &tag))
2602 case GST_RIFF_LIST_movi:
2603 if (!gst_riff_read_list (riff, &tag))
2611 GST_WARNING ("Unknown list %" GST_FOURCC_FORMAT " before AVI data",
2612 GST_FOURCC_ARGS (tag));
2615 case GST_RIFF_TAG_JUNK:
2616 if (!gst_avi_demux_skip (avi, prevent_eos))
2623 if ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
2624 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9') {
2629 case GST_RIFF_TAG_idx1:
2630 case GST_RIFF_TAG_JUNK:
2631 if (!gst_avi_demux_skip (avi, prevent_eos)) {
2638 /* And then, we get the data */
2639 if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
2642 if (!(tag = gst_riff_peek_tag (riff, NULL)))
2645 /* Support for rec-list files */
2647 case GST_RIFF_TAG_LIST:
2648 if (!(tag = gst_riff_peek_list (riff)))
2650 if (tag == GST_RIFF_rec) {
2651 /* Simply skip the list */
2652 if (!gst_riff_read_list (riff, &tag))
2654 if (!(tag = gst_riff_peek_tag (riff, NULL)))
2659 case GST_RIFF_TAG_JUNK:
2660 gst_avi_demux_skip (avi, prevent_eos);
2673 * gst_avi_demux_peek_tag:
2675 * Returns the tag and size of the next chunk
2677 static GstFlowReturn
2678 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2681 GstFlowReturn res = GST_FLOW_OK;
2682 GstBuffer *buf = NULL;
2685 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2686 if (res != GST_FLOW_OK)
2689 bufsize = GST_BUFFER_SIZE (buf);
2693 *tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2694 *size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2696 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2697 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2698 *size, offset + 8, offset + 8 + (gint64) * size);
2700 gst_buffer_unref (buf);
2707 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2712 GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
2713 res = GST_FLOW_ERROR;
2721 * gst_avi_demux_next_data_buffer:
2723 * Returns the offset and size of the next buffer
2724 * Position is the position of the buffer (after tag and size)
2726 static GstFlowReturn
2727 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2728 guint32 * tag, guint * size)
2730 guint64 off = *offset;
2735 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2736 if (res != GST_FLOW_OK)
2738 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2739 off += 8 + 4; /* skip tag + size + subtag */
2753 * gst_avi_demux_stream_scan:
2754 * @avi: calling element (used for debugging/errors).
2755 * @index: list of index entries, returned by this function.
2756 * @alloc_list: list of allocated data, returned by this function.
2758 * Scan the file for all chunks to "create" a new index.
2759 * Return value indicates if we can continue reading the stream. It
2760 * does not say anything about whether we created an index.
2765 gst_avi_demux_stream_scan (GstAviDemux * avi,
2766 GList ** index, GList ** alloc_list)
2769 gst_avi_index_entry *entry, *entries = NULL;
2770 GstAviStream *stream;
2772 guint64 pos = avi->offset;
2777 guint index_size = 0;
2780 * - implement non-seekable source support.
2782 GST_DEBUG_OBJECT (avi,
2783 "Creating index %s existing index, starting at offset %" G_GUINT64_FORMAT,
2784 ((*index) ? "with" : "without"), pos);
2786 format = GST_FORMAT_BYTES;
2787 if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
2793 entry = g_list_last (*index)->data;
2794 pos = entry->offset + avi->index_offset + entry->size;
2795 if (entry->size & 1)
2798 if (pos >= length) {
2799 GST_LOG_OBJECT (avi, "Complete index, we're done");
2803 GST_LOG_OBJECT (avi, "Incomplete index, seeking to last valid entry @ %"
2804 G_GUINT64_FORMAT " of %" G_GUINT64_FORMAT " (%"
2805 G_GUINT64_FORMAT "+%u)", pos, length, entry->offset, entry->size);
2812 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2813 if (G_UNLIKELY (res != GST_FLOW_OK))
2816 /* check valid stream */
2817 stream_nr = CHUNKID_TO_STREAMNR (tag);
2818 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2819 GST_WARNING_OBJECT (avi,
2820 "Index entry has invalid stream nr %d", stream_nr);
2824 stream = &avi->stream[stream_nr];
2825 if (G_UNLIKELY (stream->pad == NULL)) {
2826 GST_WARNING_OBJECT (avi,
2827 "Stream %d does not have an output pad, can't create new index",
2833 if (G_UNLIKELY (index_size % 1024 == 0)) {
2834 entries = g_new (gst_avi_index_entry, 1024);
2835 *alloc_list = g_list_prepend (*alloc_list, entries);
2837 entry = &entries[index_size % 1024];
2839 entry->index_nr = index_size++;
2840 entry->stream_nr = stream_nr;
2841 entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
2842 entry->offset = pos - avi->index_offset;
2845 /* timestamps, get timestamps of two consecutive frames to calculate
2846 * timestamp and duration. */
2847 format = GST_FORMAT_TIME;
2848 if (stream->is_vbr) {
2850 entry->ts = avi_stream_convert_frames_to_time_unchecked (stream,
2852 entry->dur = avi_stream_convert_frames_to_time_unchecked (stream,
2855 /* constant rate stream */
2856 entry->ts = avi_stream_convert_bytes_to_time_unchecked (stream,
2857 stream->total_bytes);
2858 entry->dur = avi_stream_convert_bytes_to_time_unchecked (stream,
2859 stream->total_bytes + entry->size);
2861 entry->dur -= entry->ts;
2863 /* stream position */
2864 entry->bytes_before = stream->total_bytes;
2865 stream->total_bytes += entry->size;
2866 entry->frames_before = stream->idx_n;
2868 stream->idx_duration = entry->ts + entry->dur;
2870 list = g_list_prepend (list, entry);
2871 GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
2872 G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
2873 index_size - 1, entry->frames_before, entry->offset,
2874 GST_TIME_ARGS (entry->ts), entry->stream_nr);
2877 /* update position */
2878 pos += GST_ROUND_UP_2 (size);
2879 if (G_UNLIKELY (pos > length)) {
2880 GST_WARNING_OBJECT (avi,
2881 "Stopping index lookup since we are further than EOF");
2886 /* FIXME: why is this disabled */
2888 while (gst_avi_demux_sync (avi, &tag, TRUE)) {
2889 guint stream_nr = CHUNKID_TO_STREAMNR (tag);
2891 GstFormat format = GST_FORMAT_TIME;
2893 if (stream_nr >= avi->num_streams)
2895 stream = &avi->stream[stream_nr];
2897 /* get chunk size */
2898 if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
2902 entry->index_nr = index_size++;
2903 entry->stream_nr = stream_nr;
2904 entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
2905 entry->offset = gst_bytestream_tell (riff->bs) + 8 - avi->index_offset;
2906 entry->size = GST_READ_UINT32_LE (&data[4]);
2909 if (stream->is_vbr) {
2911 entry->ts = avi_stream_convert_frames_to_time_unchecked (stream,
2913 entry->dur = avi_stream_convert_frames_to_time_unchecked (stream,
2916 /* constant rate stream */
2917 entry->ts = avi_stream_convert_bytes_to_time_unchecked (stream,
2918 stream->total_bytes);
2919 entry->dur = avi_stream_convert_bytes_to_time_unchecked (stream,
2920 stream->total_bytes + entry->size);
2922 entry->dur -= entry->ts;
2924 /* stream position */
2925 entry->bytes_before = stream->total_bytes;
2926 stream->total_bytes += entry->size;
2927 entry->frames_before = stream->idx_n;
2930 list = g_list_prepend (list, entry);
2931 GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
2932 G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
2933 index_size - 1, entry->frames_before, entry->offset,
2934 GST_TIME_ARGS (entry->ts), entry->stream_nr);
2937 if (!gst_avi_demux_skip (avi, TRUE))
2941 if (!(event = gst_riff_read_seek (riff, pos))) {
2945 gst_event_unref (event);
2949 GST_DEBUG_OBJECT (avi, "index created, %d items", index_size);
2951 *index = g_list_concat (*index, g_list_reverse (list));
2959 * gst_avi_demux_massage_index:
2960 * @avi: calling element (used for debugging/errors).
2962 * We're going to go over each entry in the index and finetune
2963 * some things we don't like about AVI. For example, a single
2964 * chunk might be too long. Also, individual streams might be
2965 * out-of-sync. In the first case, we cut the chunk in several
2966 * smaller pieces. In the second case, we re-order chunk reading
2967 * order. The end result should be a smoother playing AVI.
2970 gst_avi_demux_massage_index (GstAviDemux * avi,
2971 GList * list, GList * alloc_list)
2973 gst_avi_index_entry *entry;
2974 GstAviStream *stream;
2977 gint64 delay = G_GINT64_CONSTANT (0);
2980 stamp = gst_util_get_timestamp ();
2982 GST_LOG_OBJECT (avi, "Starting index massage, nr_entries = %d",
2983 list ? g_list_length (list) : 0);
2986 #ifndef GST_DISABLE_GST_DEBUG
2987 guint num_added_total = 0;
2988 guint num_per_stream[GST_AVI_DEMUX_MAX_STREAMS] = { 0, };
2990 GST_LOG_OBJECT (avi,
2991 "I'm now going to cut large chunks into smaller pieces");
2993 /* cut chunks in small (seekable) pieces
2994 * FIXME: this should be a property where a value of
2995 * GST_CLOCK_TIME_NONE would disable the chunking
2997 #define MAX_DURATION (GST_SECOND / 2)
2998 for (i = 0; i < avi->num_streams; i++) {
2999 /* only chop streams that have exactly *one* chunk */
3000 if (avi->stream[i].idx_n != 1)
3003 for (node = list; node != NULL; node = node->next) {
3006 if (entry->stream_nr != i)
3009 /* check for max duration of a single buffer. I suppose that
3010 * the allocation of index entries could be improved. */
3011 stream = &avi->stream[entry->stream_nr];
3012 if (entry->dur > MAX_DURATION
3013 && stream->strh->type == GST_RIFF_FCC_auds) {
3015 gst_avi_index_entry *entries;
3016 guint old_size, num_added;
3019 /* cut in 1/10th of a second */
3020 ideal_size = stream->strf.auds->av_bps / 10;
3022 /* ensure chunk size is multiple of blockalign */
3023 if (stream->strf.auds->blockalign > 1)
3024 ideal_size -= ideal_size % stream->strf.auds->blockalign;
3027 old_size = entry->size;
3028 num_added = (entry->size - 1) / ideal_size;
3029 avi->index_size += num_added;
3030 entries = g_malloc (sizeof (gst_avi_index_entry) * num_added);
3031 alloc_list = g_list_prepend (alloc_list, entries);
3032 for (node2 = node->next; node2 != NULL; node2 = node2->next) {
3033 gst_avi_index_entry *entry2 = node2->data;
3035 entry2->index_nr += num_added;
3036 if (entry2->stream_nr == entry->stream_nr)
3037 entry2->frames_before += num_added;
3040 /* new sized index chunks */
3041 for (i = 0; i < num_added + 1; i++) {
3042 gst_avi_index_entry *entry2;
3047 entry2 = &entries[i - 1];
3048 list = g_list_insert_before (list, node->next, entry2);
3051 memcpy (entry2, entry, sizeof (gst_avi_index_entry));
3054 if (old_size >= ideal_size) {
3055 entry2->size = ideal_size;
3056 old_size -= ideal_size;
3058 entry2->size = old_size;
3061 entry2->dur = GST_SECOND * entry2->size / stream->strf.auds->av_bps;
3064 entry2->ts += entry->dur;
3065 entry2->offset += entry->size;
3066 entry2->bytes_before += entry->size;
3067 entry2->frames_before++;
3070 #ifndef GST_DISABLE_GST_DEBUG
3071 num_added_total += num_added;
3076 #ifndef GST_DISABLE_GST_DEBUG
3077 if (num_added_total)
3078 GST_LOG ("added %u new index entries", num_added_total);
3081 GST_LOG_OBJECT (avi, "I'm now going to reorder the index entries for time");
3083 /* re-order for time */
3084 list = g_list_sort (list, (GCompareFunc) sort);
3086 /* make a continous array out of the list */
3087 avi->index_size = g_list_length (list);
3088 avi->index_entries = g_try_new (gst_avi_index_entry, avi->index_size);
3089 if (!avi->index_entries)
3092 entry = (gst_avi_index_entry *) (list->data);
3095 GST_LOG_OBJECT (avi,
3096 "Building index array, nr_entries = %d (time offset = %"
3097 GST_TIME_FORMAT, avi->index_size, GST_TIME_ARGS (delay));
3099 for (i = 0, node = list; node != NULL; node = node->next, i++) {
3101 entry->index_nr = i;
3103 memcpy (&avi->index_entries[i], entry, sizeof (gst_avi_index_entry));
3104 #ifndef GST_DISABLE_GST_DEBUG
3105 num_per_stream[entry->stream_nr]++;
3108 GST_LOG_OBJECT (avi, "Sorted index entry %3d for stream %d of size %6u"
3109 " at offset %7" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT
3110 " dur %" GST_TIME_FORMAT,
3111 avi->index_entries[i].index_nr, entry->stream_nr, entry->size,
3112 entry->offset, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur));
3115 for (i = 0; i < avi->num_streams; i++) {
3116 stream = &avi->stream[i];
3117 stream->idx_duration -= delay;
3120 #ifndef GST_DISABLE_GST_DEBUG
3122 gchar str[GST_AVI_DEMUX_MAX_STREAMS * (1 + 6 + 2)];
3125 for (i = 0; i < avi->num_streams; i++) {
3126 if (!avi->stream[i].pad)
3128 pad_name = GST_OBJECT_NAME (avi->stream[i].pad);
3129 sprintf (&str[i * (1 + 6 + 2)], " %6u %c", num_per_stream[i],
3132 GST_LOG_OBJECT (avi, "indizies per stream:%20s", str);
3136 GST_LOG_OBJECT (avi, "Freeing original index list");
3137 /* all the node->data in list point to alloc_list chunks */
3142 g_list_foreach (alloc_list, (GFunc) g_free, NULL);
3143 g_list_free (alloc_list);
3145 #ifndef GST_DISABLE_GST_DEBUG
3146 for (i = 0; i < avi->num_streams; i++) {
3147 GST_LOG_OBJECT (avi, "Stream %d, %d frames, %8" G_GUINT64_FORMAT " bytes",
3148 i, avi->stream[i].idx_n, avi->stream[i].total_bytes);
3152 GST_LOG_OBJECT (avi, "Index massaging done");
3154 stamp = gst_util_get_timestamp () - stamp;
3156 GST_CAT_DEBUG (GST_CAT_PERFORMANCE, "massaging index %" GST_TIME_FORMAT,
3157 GST_TIME_ARGS (stamp));
3164 GST_WARNING_OBJECT (avi, "Out of memory for %" G_GSIZE_FORMAT " bytes",
3165 sizeof (gst_avi_index_entry) * avi->index_size);
3172 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
3177 total = GST_CLOCK_TIME_NONE;
3179 /* all streams start at a timestamp 0 */
3180 for (stream = 0; stream < avi->num_streams; stream++) {
3181 GstClockTime duration, hduration;
3182 GstAviStream *streamc = &avi->stream[stream];
3183 gst_riff_strh *strh = streamc->strh;
3188 /* get header duration for the stream */
3189 hduration = streamc->hdr_duration;
3191 /* index duration calculated during parsing, invariant under massage */
3192 duration = streamc->idx_duration;
3194 /* now pick a good duration */
3195 if (GST_CLOCK_TIME_IS_VALID (duration)) {
3196 /* index gave valid duration, use that */
3197 GST_INFO ("Stream %d duration according to index: %" GST_TIME_FORMAT,
3198 stream, GST_TIME_ARGS (duration));
3200 /* fall back to header info to calculate a duration */
3201 duration = hduration;
3203 /* set duration for the stream */
3204 streamc->duration = duration;
3206 /* find total duration */
3207 if (total == GST_CLOCK_TIME_NONE || duration > total)
3211 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
3212 /* now update the duration for those streams where we had none */
3213 for (stream = 0; stream < avi->num_streams; stream++) {
3214 GstAviStream *streamc = &avi->stream[stream];
3216 if (!GST_CLOCK_TIME_IS_VALID (streamc->duration)
3217 || streamc->duration == 0) {
3218 streamc->duration = total;
3220 GST_INFO ("Stream %d duration according to total: %" GST_TIME_FORMAT,
3221 stream, GST_TIME_ARGS (total));
3226 /* and set the total duration in the segment. */
3227 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
3228 GST_TIME_ARGS (total));
3230 gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
3233 /* returns FALSE if there are no pads to deliver event to,
3234 * otherwise TRUE (whatever the outcome of event sending) */
3236 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
3238 gboolean result = FALSE;
3241 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
3242 GST_EVENT_TYPE_NAME (event), avi->num_streams);
3244 if (avi->num_streams) {
3245 for (i = 0; i < avi->num_streams; i++) {
3246 GstAviStream *stream = &avi->stream[i];
3250 gst_pad_push_event (stream->pad, gst_event_ref (event));
3254 gst_event_unref (event);
3259 * Read AVI headers when streaming
3261 static GstFlowReturn
3262 gst_avi_demux_stream_header_push (GstAviDemux * avi)
3264 GstFlowReturn ret = GST_FLOW_OK;
3269 GstBuffer *buf = NULL, *sub = NULL;
3273 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
3275 switch (avi->header_state) {
3276 case GST_AVI_DEMUX_HEADER_TAG_LIST:
3277 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3278 avi->offset += 8 + GST_ROUND_UP_2 (size);
3279 if (tag != GST_RIFF_TAG_LIST)
3280 goto header_no_list;
3282 gst_adapter_flush (avi->adapter, 8);
3283 /* Find the 'hdrl' LIST tag */
3284 GST_DEBUG ("Reading %d bytes", size);
3285 buf = gst_adapter_take_buffer (avi->adapter, size);
3287 if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
3288 goto header_no_hdrl;
3292 gst_adapter_flush (avi->adapter, 1);
3294 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
3296 /* the hdrl starts with a 'avih' header */
3297 if (!gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag, &sub))
3298 goto header_no_avih;
3300 if (tag != GST_RIFF_TAG_avih)
3301 goto header_no_avih;
3303 if (!gst_avi_demux_parse_avih (GST_ELEMENT (avi), sub, &avi->avih))
3304 goto header_wrong_avih;
3306 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
3308 /* now, read the elements from the header until the end */
3309 while (gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag,
3311 /* sub can be NULL on empty tags */
3316 case GST_RIFF_TAG_LIST:
3317 if (GST_BUFFER_SIZE (sub) < 4)
3320 switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
3321 case GST_RIFF_LIST_strl:
3322 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3324 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3325 ("failed to parse stream, ignoring"));
3330 case GST_RIFF_LIST_odml:
3331 gst_avi_demux_parse_odml (avi, sub);
3335 GST_WARNING_OBJECT (avi,
3336 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3337 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
3340 case GST_RIFF_TAG_JUNK:
3345 GST_WARNING_OBJECT (avi,
3346 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
3347 offset, GST_FOURCC_ARGS (tag));
3349 case GST_RIFF_TAG_JUNK:
3351 /* move to next chunk */
3353 gst_buffer_unref (sub);
3358 gst_buffer_unref (buf);
3359 GST_DEBUG ("elements parsed");
3361 /* check parsed streams */
3362 if (avi->num_streams == 0) {
3364 } else if (avi->num_streams != avi->avih->streams) {
3365 GST_WARNING_OBJECT (avi,
3366 "Stream header mentioned %d streams, but %d available",
3367 avi->avih->streams, avi->num_streams);
3369 GST_DEBUG ("Get junk and info next");
3370 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
3372 /* Need more data */
3376 case GST_AVI_DEMUX_HEADER_INFO:
3377 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
3379 if (gst_adapter_available (avi->adapter) < 12)
3382 data = gst_adapter_peek (avi->adapter, 12);
3383 tag = GST_READ_UINT32_LE (data);
3384 size = GST_READ_UINT32_LE (data + 4);
3385 ltag = GST_READ_UINT32_LE (data + 8);
3387 if (tag == GST_RIFF_TAG_LIST) {
3389 case GST_RIFF_LIST_movi:
3390 gst_adapter_flush (avi->adapter, 12);
3393 case GST_RIFF_LIST_INFO:
3394 GST_DEBUG ("Found INFO chunk");
3395 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3396 GST_DEBUG ("got size %d", size);
3398 gst_adapter_flush (avi->adapter, 12);
3400 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
3403 gst_adapter_flush (avi->adapter, 1);
3404 gst_riff_parse_info (GST_ELEMENT (avi), buf,
3406 gst_buffer_unref (buf);
3408 avi->offset += GST_ROUND_UP_2 (size) - 4;
3410 GST_DEBUG ("skipping INFO LIST prefix");
3413 /* Need more data */
3418 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3419 avi->offset += 8 + GST_ROUND_UP_2 (size);
3420 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3421 // ??? goto iterate; ???
3423 /* Need more data */
3429 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3430 avi->offset += 8 + GST_ROUND_UP_2 (size);
3431 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
3434 /* Need more data */
3441 GST_WARNING ("unhandled header state: %d", avi->header_state);
3446 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3447 avi->num_streams, avi->stream[0].indexes);
3449 GST_DEBUG ("Found movi chunk. Starting to stream data");
3450 avi->state = GST_AVI_DEMUX_MOVI;
3453 /*GList *index = NULL, *alloc = NULL; */
3455 /* ######################## this need to be integrated with the state */
3456 /* create or read stream index (for seeking) */
3457 if (avi->stream[0].indexes != NULL) {
3458 gst_avi_demux_read_subindexes_push (avi, &index, &alloc);
3461 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
3462 gst_avi_demux_stream_index (avi, &index, &alloc);
3464 /* some indexes are incomplete, continue streaming from there */
3466 gst_avi_demux_stream_scan (avi, &index, &alloc);
3469 /* this is a fatal error */
3473 if (!gst_avi_demux_massage_index (avi, index, alloc))
3476 gst_avi_demux_calculate_durations_from_index (avi);
3477 /* ######################## */
3480 /* create initial NEWSEGMENT event */
3481 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3482 stop = avi->segment.duration;
3484 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3486 if (avi->seek_event)
3487 gst_event_unref (avi->seek_event);
3488 avi->seek_event = gst_event_new_new_segment
3489 (FALSE, avi->segment.rate, GST_FORMAT_TIME,
3490 avi->segment.start, stop, avi->segment.start);
3492 /* at this point we know all the streams and we can signal the no more
3494 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3495 gst_element_no_more_pads (GST_ELEMENT (avi));
3502 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3503 return GST_FLOW_ERROR;
3507 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3508 ("Invalid AVI header (no LIST at start): %"
3509 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3510 return GST_FLOW_ERROR;
3514 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3515 ("Invalid AVI header (no hdrl at start): %"
3516 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3517 gst_buffer_unref (buf);
3518 return GST_FLOW_ERROR;
3522 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3523 ("Invalid AVI header (no avih at start): %"
3524 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3526 gst_buffer_unref (sub);
3528 gst_buffer_unref (buf);
3529 return GST_FLOW_ERROR;
3533 gst_buffer_unref (buf);
3534 return GST_FLOW_ERROR;
3539 * Read full AVI headers.
3541 static GstFlowReturn
3542 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3545 GstBuffer *buf, *sub = NULL;
3548 GList *index = NULL, *alloc = NULL;
3552 GstElement *element = GST_ELEMENT_CAST (avi);
3555 stamp = gst_util_get_timestamp ();
3557 /* the header consists of a 'hdrl' LIST tag */
3558 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3559 if (res != GST_FLOW_OK)
3560 goto pull_range_failed;
3561 else if (tag != GST_RIFF_TAG_LIST)
3563 else if (GST_BUFFER_SIZE (buf) < 4)
3566 GST_DEBUG_OBJECT (avi, "parsing headers");
3568 /* Find the 'hdrl' LIST tag */
3569 while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
3570 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3571 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
3574 gst_buffer_unref (buf);
3576 /* read new chunk */
3577 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3578 if (res != GST_FLOW_OK)
3579 goto pull_range_failed;
3580 else if (tag != GST_RIFF_TAG_LIST)
3582 else if (GST_BUFFER_SIZE (buf) < 4)
3586 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3588 /* the hdrl starts with a 'avih' header */
3589 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3591 else if (tag != GST_RIFF_TAG_avih)
3593 else if (!gst_avi_demux_parse_avih (element, sub, &avi->avih))
3596 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3598 /* now, read the elements from the header until the end */
3599 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3600 /* sub can be NULL on empty tags */
3605 case GST_RIFF_TAG_LIST:
3610 if (GST_BUFFER_SIZE (sub) < 4)
3613 data = GST_BUFFER_DATA (sub);
3614 fourcc = GST_READ_UINT32_LE (data);
3617 case GST_RIFF_LIST_strl:
3618 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3619 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3620 ("failed to parse stream, ignoring"));
3625 case GST_RIFF_LIST_odml:
3626 gst_avi_demux_parse_odml (avi, sub);
3630 GST_WARNING_OBJECT (avi,
3631 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3632 GST_FOURCC_ARGS (fourcc));
3633 GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
3634 GST_BUFFER_SIZE (sub));
3636 case GST_RIFF_TAG_JUNK:
3642 GST_WARNING_OBJECT (avi,
3643 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3644 GST_FOURCC_ARGS (tag), offset);
3645 GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
3646 GST_BUFFER_SIZE (sub));
3648 case GST_RIFF_TAG_JUNK:
3651 gst_buffer_unref (sub);
3656 gst_buffer_unref (buf);
3657 GST_DEBUG ("elements parsed");
3659 /* check parsed streams */
3660 if (avi->num_streams == 0)
3662 else if (avi->num_streams != avi->avih->streams) {
3663 GST_WARNING_OBJECT (avi,
3664 "Stream header mentioned %d streams, but %d available",
3665 avi->avih->streams, avi->num_streams);
3668 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3669 G_GUINT64_FORMAT, avi->offset);
3671 /* Now, find the data (i.e. skip all junk between header and data) */
3676 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3677 if (res != GST_FLOW_OK) {
3678 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3679 goto pull_range_failed;
3680 } else if (GST_BUFFER_SIZE (buf) < 12) {
3681 GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
3682 GST_BUFFER_SIZE (buf));
3683 gst_buffer_unref (buf);
3684 return GST_FLOW_ERROR;
3687 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
3688 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
3689 ltag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 8);
3691 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3692 GST_FOURCC_ARGS (tag), size);
3693 GST_MEMDUMP ("Tag content", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
3694 gst_buffer_unref (buf);
3697 case GST_RIFF_TAG_LIST:{
3699 case GST_RIFF_LIST_movi:
3700 GST_DEBUG_OBJECT (avi,
3701 "Reached the 'movi' tag, we're done with skipping");
3703 case GST_RIFF_LIST_INFO:
3705 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3707 if (res != GST_FLOW_OK) {
3708 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3709 goto pull_range_failed;
3711 GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
3713 GST_DEBUG ("skipping INFO LIST prefix");
3714 avi->offset += (4 - GST_ROUND_UP_2 (size));
3715 gst_buffer_unref (buf);
3719 sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
3720 gst_riff_parse_info (element, sub, &avi->globaltags);
3722 gst_buffer_unref (sub);
3725 gst_buffer_unref (buf);
3726 /* gst_riff_read_chunk() has already advanced avi->offset */
3729 GST_WARNING_OBJECT (avi,
3730 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3731 GST_FOURCC_ARGS (ltag));
3732 avi->offset += 8 + GST_ROUND_UP_2 (size);
3738 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3739 GST_FOURCC_ARGS (tag));
3741 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3742 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3743 avi->offset += 8 + GST_ROUND_UP_2 (size);
3749 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3750 avi->num_streams, avi->stream[0].indexes);
3753 /* create or read stream index (for seeking) */
3754 if (avi->stream[0].indexes != NULL) {
3755 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3756 gst_avi_demux_read_subindexes_pull (avi, &index, &alloc);
3760 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
3761 gst_avi_demux_stream_index (avi);
3764 /* some indexes are incomplete, continue streaming from there */
3766 gst_avi_demux_stream_scan (avi, &index, &alloc);
3769 /* this is a fatal error */
3774 gst_avi_demux_calculate_durations_from_index (avi);
3776 /* create initial NEWSEGMENT event */
3777 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3778 stop = avi->segment.duration;
3780 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3782 /* do initial seek to the configured segment values */
3783 gst_avi_demux_do_seek (avi, &avi->segment);
3785 if (avi->seek_event)
3786 gst_event_unref (avi->seek_event);
3787 avi->seek_event = gst_event_new_new_segment
3788 (FALSE, avi->segment.rate, GST_FORMAT_TIME,
3789 avi->segment.start, stop, avi->segment.start);
3791 stamp = gst_util_get_timestamp () - stamp;
3792 GST_CAT_DEBUG (GST_CAT_PERFORMANCE, "pulling header %" GST_TIME_FORMAT,
3793 GST_TIME_ARGS (stamp));
3795 /* at this point we know all the streams and we can signal the no more
3797 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3798 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3805 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3806 ("Invalid AVI header (no LIST at start): %"
3807 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3808 gst_buffer_unref (buf);
3809 return GST_FLOW_ERROR;
3813 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3814 ("Invalid AVI header (no hdrl at start): %"
3815 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3816 gst_buffer_unref (buf);
3817 return GST_FLOW_ERROR;
3821 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3822 ("Invalid AVI header (no avih at start): %"
3823 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3825 gst_buffer_unref (sub);
3826 gst_buffer_unref (buf);
3827 return GST_FLOW_ERROR;
3831 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3832 ("Invalid AVI header (cannot parse avih at start)"));
3833 gst_buffer_unref (buf);
3834 return GST_FLOW_ERROR;
3838 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3839 return GST_FLOW_ERROR;
3844 GST_WARNING ("file without or too big index");
3845 g_list_free (index);
3846 g_list_foreach (alloc, (GFunc) g_free, NULL);
3847 g_list_free (alloc);
3849 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3850 ("Could not get/create index"));
3851 return GST_FLOW_ERROR;
3856 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3857 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3858 return GST_FLOW_ERROR;
3862 /* move a stream to @index */
3864 gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream,
3865 GstSegment * segment, guint index)
3867 GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index);
3869 if (segment->rate < 0.0) {
3871 /* Because we don't know the frame order we need to push from the prev keyframe
3872 * to the next keyframe. If there is a smart decoder downstream he will notice
3873 * that there are too many encoded frames send and return UNEXPECTED when there
3874 * are enough decoded frames to fill the segment. */
3875 next_key = gst_avi_demux_index_next (avi, stream, index, TRUE);
3877 /* FIXME, we go back to 0, we should look at segment.start. We will however
3878 * stop earlier when the see the timestamp < segment.start */
3879 stream->start_entry = 0;
3880 stream->step_entry = index;
3881 stream->current_entry = index;
3882 stream->stop_entry = next_key;
3884 GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u",
3885 stream->start_entry, stream->step_entry, stream->stop_entry);
3887 stream->start_entry = index;
3888 stream->step_entry = index;
3889 stream->stop_entry = gst_avi_demux_index_last (avi, stream);
3891 if (stream->current_entry != index) {
3892 GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u",
3893 stream->current_entry, index);
3894 stream->current_entry = index;
3895 stream->discont = TRUE;
3898 /* update the buffer info */
3899 gst_avi_demux_get_buffer_info (avi, stream, index,
3900 &stream->current_timestamp, &stream->current_ts_end,
3901 &stream->current_offset, &stream->current_offset_end);
3903 GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT
3904 ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
3905 ", off_end %" G_GUINT64_FORMAT, index,
3906 GST_TIME_ARGS (stream->current_timestamp),
3907 GST_TIME_ARGS (stream->current_ts_end), stream->current_offset,
3908 stream->current_offset_end);
3912 * Do the actual seeking.
3915 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3917 GstClockTime seek_time;
3920 GstAviStream *stream;
3921 GstClockTime timestamp, duration;
3923 seek_time = segment->last_stop;
3924 keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3926 GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT
3927 " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
3929 /* FIXME, this code assumes the main stream with keyframes is stream 0,
3930 * which is mostly correct... */
3931 stream = &avi->stream[0];
3933 /* get the entry index for the requested position */
3934 index = gst_avi_demux_index_for_time (avi, stream, seek_time);
3935 GST_DEBUG_OBJECT (avi, "Got entry %u", index);
3937 /* check if we are already on a keyframe */
3938 if (!ENTRY_IS_KEYFRAME (&stream->index[index])) {
3939 GST_DEBUG_OBJECT (avi, "not keyframe, searching back");
3940 /* now go to the previous keyframe, this is where we should start
3942 index = gst_avi_demux_index_prev (avi, stream, index, TRUE);
3943 GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index);
3946 /* take a look at the final entry */
3947 gst_avi_demux_get_buffer_info (avi, stream, index,
3948 ×tamp, &duration, NULL, NULL);
3950 GST_DEBUG_OBJECT (avi,
3951 "Got keyframe entry %d [ts:%" GST_TIME_FORMAT
3952 " / duration:%" GST_TIME_FORMAT "]", index,
3953 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (duration));
3956 /* when seeking to a keyframe, we update the result seek time
3957 * to the time of the keyframe. */
3958 seek_time = timestamp;
3961 /* the seek time is also the last_stop and stream time */
3962 segment->last_stop = seek_time;
3963 segment->time = seek_time;
3965 /* move the main stream to this position */
3966 gst_avi_demux_move_stream (avi, stream, segment, index);
3968 /* now set DISCONT and align the other streams */
3969 for (i = 0; i < avi->num_streams; i++) {
3970 GstAviStream *ostream;
3972 ostream = &avi->stream[i];
3973 if (ostream == stream)
3976 /* get the entry index for the requested position */
3977 index = gst_avi_demux_index_for_time (avi, ostream, seek_time);
3979 if (!ENTRY_IS_KEYFRAME (&ostream->index[index]))
3980 index = gst_avi_demux_index_prev (avi, ostream, index, TRUE);
3982 gst_avi_demux_move_stream (avi, ostream, segment, index);
3984 GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT,
3985 GST_TIME_ARGS (seek_time));
3991 * Handle seek event.
3994 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
3999 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
4003 GstSegment seeksegment = { 0, };
4006 GST_DEBUG_OBJECT (avi, "doing seek with event");
4008 gst_event_parse_seek (event, &rate, &format, &flags,
4009 &cur_type, &cur, &stop_type, &stop);
4011 /* we have to have a format as the segment format. Try to convert
4013 if (format != GST_FORMAT_TIME) {
4014 GstFormat fmt = GST_FORMAT_TIME;
4015 gboolean res = TRUE;
4017 if (cur_type != GST_SEEK_TYPE_NONE)
4018 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
4019 if (res && stop_type != GST_SEEK_TYPE_NONE)
4020 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
4026 GST_DEBUG_OBJECT (avi,
4027 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
4028 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
4029 /* FIXME: can we do anything with rate!=1.0 */
4031 GST_DEBUG_OBJECT (avi, "doing seek without event");
4036 /* save flush flag */
4037 flush = flags & GST_SEEK_FLAG_FLUSH;
4040 GstEvent *event = gst_event_new_flush_start ();
4042 /* for a flushing seek, we send a flush_start on all pads. This will
4043 * eventually stop streaming with a WRONG_STATE. We can thus eventually
4044 * take the STREAM_LOCK. */
4045 GST_DEBUG_OBJECT (avi, "sending flush start");
4046 gst_avi_demux_push_event (avi, gst_event_ref (event));
4047 gst_pad_push_event (avi->sinkpad, event);
4049 /* a non-flushing seek, we PAUSE the task so that we can take the
4051 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
4052 gst_pad_pause_task (avi->sinkpad);
4055 /* wait for streaming to stop */
4056 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
4057 GST_PAD_STREAM_LOCK (avi->sinkpad);
4059 /* copy segment, we need this because we still need the old
4060 * segment when we close the current segment. */
4061 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
4064 GST_DEBUG_OBJECT (avi, "configuring seek");
4065 gst_segment_set_seek (&seeksegment, rate, format, flags,
4066 cur_type, cur, stop_type, stop, &update);
4068 /* do the seek, seeksegment.last_stop contains the new position, this
4069 * actually never fails. */
4070 gst_avi_demux_do_seek (avi, &seeksegment);
4075 GST_DEBUG_OBJECT (avi, "sending flush stop");
4076 gst_avi_demux_push_event (avi, gst_event_new_flush_stop ());
4077 gst_pad_push_event (avi->sinkpad, gst_event_new_flush_stop ());
4078 /* reset the last flow and mark discont, FLUSH is always DISCONT */
4079 for (i = 0; i < avi->num_streams; i++) {
4080 avi->stream[i].last_flow = GST_FLOW_OK;
4081 avi->stream[i].discont = TRUE;
4083 } else if (avi->segment_running) {
4086 /* we are running the current segment and doing a non-flushing seek,
4087 * close the segment first based on the last_stop. */
4088 GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
4089 " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
4090 seg = gst_event_new_new_segment (TRUE,
4091 avi->segment.rate, avi->segment.format,
4092 avi->segment.start, avi->segment.last_stop, avi->segment.time);
4093 gst_avi_demux_push_event (avi, seg);
4096 /* now update the real segment info */
4097 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
4099 /* post the SEGMENT_START message when we do segmented playback */
4100 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4101 gst_element_post_message (GST_ELEMENT (avi),
4102 gst_message_new_segment_start (GST_OBJECT (avi),
4103 avi->segment.format, avi->segment.last_stop));
4106 /* prepare for streaming again */
4107 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
4108 stop = avi->segment.duration;
4110 /* queue the segment event for the streaming thread. */
4111 if (avi->seek_event)
4112 gst_event_unref (avi->seek_event);
4113 if (avi->segment.rate > 0.0) {
4114 avi->seek_event = gst_event_new_new_segment (FALSE,
4115 avi->segment.rate, avi->segment.format,
4116 avi->segment.last_stop, stop, avi->segment.time);
4118 avi->seek_event = gst_event_new_new_segment (FALSE,
4119 avi->segment.rate, avi->segment.format,
4120 avi->segment.start, avi->segment.last_stop, avi->segment.start);
4123 if (!avi->streaming) {
4124 avi->segment_running = TRUE;
4125 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4128 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
4135 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
4141 * Helper for gst_avi_demux_invert()
4144 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
4146 memcpy (tmp, d1, bytes);
4147 memcpy (d1, d2, bytes);
4148 memcpy (d2, tmp, bytes);
4152 #define gst_avi_demux_is_uncompressed(fourcc) \
4153 (fourcc == GST_RIFF_DIB || \
4154 fourcc == GST_RIFF_rgb || \
4155 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
4158 * Invert DIB buffers... Takes existing buffer and
4159 * returns either the buffer or a new one (with old
4160 * one dereferenced).
4161 * FIXME: can't we preallocate tmp? and remember stride, bpp?
4164 gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf)
4171 if (stream->strh->type != GST_RIFF_FCC_vids)
4174 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
4175 return buf; /* Ignore non DIB buffers */
4178 s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
4179 if (!gst_structure_get_int (s, "bpp", &bpp)) {
4180 GST_WARNING ("Failed to retrieve depth from caps");
4184 if (stream->strf.vids == NULL) {
4185 GST_WARNING ("Failed to retrieve vids for stream");
4189 h = stream->strf.vids->height;
4190 w = stream->strf.vids->width;
4191 stride = w * (bpp / 8);
4193 buf = gst_buffer_make_writable (buf);
4194 if (GST_BUFFER_SIZE (buf) < (stride * h)) {
4195 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
4199 tmp = g_malloc (stride);
4201 for (y = 0; y < h / 2; y++) {
4202 swap_line (GST_BUFFER_DATA (buf) + stride * y,
4203 GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
4212 * Returns the aggregated GstFlowReturn.
4214 static GstFlowReturn
4215 gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream,
4220 /* store the value */
4221 stream->last_flow = ret;
4223 /* any other error that is not-linked can be returned right away */
4224 if (G_UNLIKELY (ret != GST_FLOW_NOT_LINKED))
4227 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
4228 for (i = 0; i < avi->num_streams; i++) {
4229 GstAviStream *ostream = &avi->stream[i];
4231 ret = ostream->last_flow;
4232 /* some other return value (must be SUCCESS but we can return
4233 * other values as well) */
4234 if (G_UNLIKELY (ret != GST_FLOW_NOT_LINKED))
4237 /* if we get here, all other pads were unlinked and we return
4238 * NOT_LINKED then */
4240 GST_LOG_OBJECT (avi, "combined return %s", gst_flow_get_name (ret));
4246 * Read data from one index entry
4248 static GstFlowReturn
4249 gst_avi_demux_process_next_entry (GstAviDemux * avi)
4251 GstFlowReturn res = GST_FLOW_OK;
4252 gboolean processed = FALSE;
4253 GstAviStream *stream;
4254 gst_avi_index_entry *entry;
4258 /* see if we are at the end */
4259 if ((avi->segment.rate > 0 && avi->current_entry >= avi->index_size))
4262 /* get next entry, this will work as we checked for the index size above */
4263 entry = &avi->index_entries[avi->current_entry++];
4265 /* check for reverse playback */
4266 if (avi->segment.rate < 0 && avi->current_entry > avi->reverse_stop_index) {
4267 GST_LOG_OBJECT (avi, "stop_index %d reached", avi->reverse_stop_index);
4269 /* check if we have pushed enough data for this segment */
4270 if (avi->reverse_start_index == 0)
4271 goto eos_reverse_zero;
4272 if (avi->index_entries[avi->reverse_start_index].ts < avi->segment.start)
4273 goto eos_reverse_segment;
4275 if (!(entry = gst_avi_demux_step_reverse (avi)))
4278 avi->current_entry++;
4281 /* see if we have a valid stream, ignore if not
4282 * FIXME: can't we check this when building the index?
4283 * we check it in _parse_index(), _stream_scan()
4285 if (entry->stream_nr >= avi->num_streams) {
4286 GST_WARNING_OBJECT (avi,
4287 "Entry %d has non-existing stream nr %d",
4288 avi->current_entry - 1, entry->stream_nr);
4292 /* get stream now */
4293 stream = &avi->stream[entry->stream_nr];
4295 if (avi->segment.rate > 0.0) {
4296 /* only check this for fowards playback for now */
4297 if ((entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
4298 && GST_CLOCK_TIME_IS_VALID (entry->ts)
4299 && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4300 && (entry->ts > avi->segment.stop)) {
4305 /* skip empty entries */
4306 if (entry->size == 0 || !stream->pad) {
4307 GST_DEBUG_OBJECT (avi, "Skipping entry %d (%d, %p)",
4308 avi->current_entry - 1, entry->size, stream->pad);
4312 GST_LOG ("reading buffer (size=%d) from stream %d at current pos %"
4313 G_GUINT64_FORMAT " (%llx)", entry->size, entry->stream_nr,
4314 avi->index_offset + entry->offset, avi->index_offset + entry->offset);
4316 /* pull in the data */
4317 res = gst_pad_pull_range (avi->sinkpad, entry->offset +
4318 avi->index_offset, entry->size, &buf);
4319 if (res != GST_FLOW_OK)
4322 /* check for short buffers, this is EOS as well */
4323 if (GST_BUFFER_SIZE (buf) < entry->size)
4326 /* invert the picture if needed */
4327 buf = gst_avi_demux_invert (stream, buf);
4329 /* mark non-keyframes */
4330 if (!(entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME))
4331 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4333 GST_BUFFER_TIMESTAMP (buf) = entry->ts;
4334 GST_BUFFER_DURATION (buf) = entry->dur;
4335 if (stream->strh->type == GST_RIFF_FCC_vids) {
4336 if (stream->current_frame >= 0)
4337 GST_BUFFER_OFFSET (buf) = stream->current_frame;
4340 GstFormat fmt = GST_FORMAT_DEFAULT;
4342 if (gst_pad_query_convert (stream->pad, GST_FORMAT_TIME, entry->ts,
4344 GST_BUFFER_OFFSET (buf) = framenum;
4346 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4349 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4350 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
4351 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4353 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %d, offset %"
4354 G_GUINT64_FORMAT " and time %"
4355 GST_TIME_FORMAT " on pad %s",
4356 GST_BUFFER_SIZE (buf), GST_BUFFER_OFFSET (buf),
4357 GST_TIME_ARGS (entry->ts), GST_PAD_NAME (stream->pad));
4359 /* update current position in the segment */
4360 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, entry->ts);
4362 /* mark discont when pending */
4363 if (stream->discont) {
4364 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4365 stream->discont = FALSE;
4368 res = gst_pad_push (stream->pad, buf);
4370 /* mark as processed, we increment the frame and byte counters then
4371 * leave the while loop and return the GstFlowReturn */
4373 GST_DEBUG_OBJECT (avi, "Processed buffer %d: %s", entry->index_nr,
4374 gst_flow_get_name (res));
4376 if (avi->segment.rate < 0
4377 && entry->ts > avi->segment.stop && res == GST_FLOW_UNEXPECTED) {
4378 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4379 * we are at the end of the segment, so we just need to jump
4380 * back to the previous section.
4382 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4384 if (!(entry = gst_avi_demux_step_reverse (avi)))
4389 stream->current_frame = entry->frames_before;
4390 stream->current_byte = entry->bytes_before;
4396 res = gst_avi_demux_combine_flows (avi, stream, res);
4399 stream->current_frame = entry->frames_before + 1;
4400 stream->current_byte = entry->bytes_before + entry->size;
4401 } while (!processed);
4404 GST_DEBUG_OBJECT (avi, "returning %s", gst_flow_get_name (res));
4411 GST_LOG_OBJECT (avi, "Handled last index entry, setting EOS (%d > %d)",
4412 avi->current_entry, avi->index_size);
4413 /* we mark the first stream as EOS */
4414 res = GST_FLOW_UNEXPECTED;
4419 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4420 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4421 GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (avi->segment.stop));
4422 res = GST_FLOW_UNEXPECTED;
4427 GST_DEBUG_OBJECT (avi, "start_index was 0, setting EOS");
4428 res = GST_FLOW_UNEXPECTED;
4431 eos_reverse_segment:
4433 GST_DEBUG_OBJECT (avi, "full segment pushed, setting EOS");
4434 res = GST_FLOW_UNEXPECTED;
4439 GST_DEBUG_OBJECT (avi,
4440 "pull range failed: pos=%" G_GUINT64_FORMAT " size=%d",
4441 entry->offset + avi->index_offset, entry->size);
4446 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4447 ", only got %d/%d bytes (truncated file?)", entry->offset +
4448 avi->index_offset, GST_BUFFER_SIZE (buf), entry->size);
4449 gst_buffer_unref (buf);
4450 res = GST_FLOW_UNEXPECTED;
4456 /* move @stream to the next position in its index */
4457 static GstFlowReturn
4458 gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream,
4461 guint old_entry, new_entry;
4463 old_entry = stream->current_entry;
4465 new_entry = old_entry + 1;
4467 /* see if we reached the end */
4468 if (new_entry >= stream->stop_entry) {
4469 if (avi->segment.rate < 0.0) {
4470 if (stream->step_entry == stream->start_entry) {
4471 /* we stepped all the way to the start, eos */
4472 GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry);
4475 /* backwards, stop becomes step, find a new step */
4476 stream->stop_entry = stream->step_entry;
4477 stream->step_entry = gst_avi_demux_index_prev (avi, stream,
4478 stream->stop_entry, TRUE);
4480 GST_DEBUG_OBJECT (avi,
4481 "reverse playback jump: start %u, step %u, stop %u",
4482 stream->start_entry, stream->step_entry, stream->stop_entry);
4484 /* and start from the previous keyframe now */
4485 new_entry = stream->step_entry;
4488 GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry);
4493 if (new_entry != old_entry) {
4494 stream->current_entry = new_entry;
4495 stream->current_total = stream->index[new_entry].total;
4497 if (new_entry == old_entry + 1) {
4498 GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u",
4499 old_entry, new_entry);
4500 /* we simply moved one step forwards, reuse current info */
4501 stream->current_timestamp = stream->current_ts_end;
4502 stream->current_offset = stream->current_offset_end;
4503 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4504 NULL, &stream->current_ts_end, NULL, &stream->current_offset_end);
4506 GST_DEBUG_OBJECT (avi, "DISCONT move from %u to %u", old_entry,
4508 /* we moved DISCONT, full update */
4509 gst_avi_demux_get_buffer_info (avi, stream, new_entry,
4510 &stream->current_timestamp, &stream->current_ts_end,
4511 &stream->current_offset, &stream->current_offset_end);
4512 /* and MARK discont for this stream */
4513 stream->last_flow = GST_FLOW_OK;
4514 stream->discont = TRUE;
4522 GST_DEBUG_OBJECT (avi, "we are EOS");
4523 /* setting current_timestamp to -1 marks EOS */
4524 stream->current_timestamp = -1;
4525 return GST_FLOW_UNEXPECTED;
4529 static GstFlowReturn
4530 gst_avi_demux_loop_data (GstAviDemux * avi)
4532 GstFlowReturn ret = GST_FLOW_OK;
4533 guint stream_num, i;
4535 GstAviStream *stream;
4536 gboolean processed = FALSE;
4538 guint64 offset, size;
4539 GstClockTime timestamp, duration;
4540 guint64 out_offset, out_offset_end;
4542 GstAviIndexEntry *entry;
4545 min_time = G_MAXUINT64;
4546 /* first find the stream with the lowest current position, this is the one
4547 * we should push from next */
4549 for (i = 0; i < avi->num_streams; i++) {
4552 stream = &avi->stream[i];
4553 position = stream->current_timestamp;
4555 /* position of -1 is EOS */
4556 if (position != -1 && position < min_time) {
4557 min_time = position;
4563 if (G_UNLIKELY (stream_num == -1)) {
4564 GST_DEBUG_OBJECT (avi, "all streams are EOS");
4568 /* we have the stream now */
4569 stream = &avi->stream[stream_num];
4571 /* skip streams without pads */
4573 GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad",
4578 /* get the timing info for the entry */
4579 timestamp = stream->current_timestamp;
4580 duration = stream->current_ts_end - timestamp;
4581 out_offset = stream->current_offset;
4582 out_offset_end = stream->current_offset_end;
4584 /* get the entry data info */
4585 entry = &stream->index[stream->current_entry];
4586 offset = entry->offset;
4588 keyframe = ENTRY_IS_KEYFRAME (entry);
4590 /* skip empty entries */
4592 GST_DEBUG_OBJECT (avi, "Skipping entry %u (%u, %p)",
4593 stream->current_entry, size, stream->pad);
4597 if (avi->segment.rate > 0.0) {
4598 /* only check this for fowards playback for now */
4599 if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
4600 && (timestamp > avi->segment.stop)) {
4605 /* correct for index offset */
4606 offset += avi->index_offset + 8;
4608 GST_LOG ("reading buffer (size=%d) from stream %d at current pos %"
4609 G_GUINT64_FORMAT " (%llx)", size, stream_num, offset, offset);
4611 /* pull in the data */
4612 ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf);
4613 if (ret != GST_FLOW_OK)
4616 /* check for short buffers, this is EOS as well */
4617 if (GST_BUFFER_SIZE (buf) < size)
4620 /* invert the picture if needed */
4621 buf = gst_avi_demux_invert (stream, buf);
4623 /* mark non-keyframes */
4625 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
4627 GST_BUFFER_TIMESTAMP (buf) = timestamp;
4628 GST_BUFFER_DURATION (buf) = duration;
4629 GST_BUFFER_OFFSET (buf) = out_offset;
4630 GST_BUFFER_OFFSET_END (buf) = out_offset_end;
4632 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4634 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %u, ts %"
4635 GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT
4636 ", off_end %" G_GUINT64_FORMAT " on pad %s",
4637 GST_BUFFER_SIZE (buf), GST_TIME_ARGS (timestamp),
4638 GST_TIME_ARGS (duration), GST_BUFFER_OFFSET (buf),
4639 GST_BUFFER_OFFSET_END (buf), GST_PAD_NAME (stream->pad));
4641 /* update current position in the segment */
4642 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, timestamp);
4644 /* mark discont when pending */
4645 if (stream->discont) {
4646 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4647 stream->discont = FALSE;
4650 ret = gst_pad_push (stream->pad, buf);
4652 /* mark as processed, we increment the frame and byte counters then
4653 * leave the while loop and return the GstFlowReturn */
4655 GST_DEBUG_OBJECT (avi, "Processed buffer %u: %s", stream->current_entry,
4656 gst_flow_get_name (ret));
4658 if (avi->segment.rate < 0) {
4659 if (timestamp > avi->segment.stop && ret == GST_FLOW_UNEXPECTED) {
4660 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4661 * we are at the end of the segment, so we just need to jump
4662 * back to the previous section. */
4663 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4668 /* move to next item */
4669 ret = gst_avi_demux_advance (avi, stream, ret);
4672 ret = gst_avi_demux_combine_flows (avi, stream, ret);
4673 } while (!processed);
4681 GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS");
4682 ret = GST_FLOW_UNEXPECTED;
4687 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4688 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4689 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop));
4690 ret = GST_FLOW_UNEXPECTED;
4695 GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT
4696 " size=%d", offset, size);
4701 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4702 ", only got %d/%d bytes (truncated file?)", offset,
4703 GST_BUFFER_SIZE (buf), size);
4704 gst_buffer_unref (buf);
4705 ret = GST_FLOW_UNEXPECTED;
4711 GST_DEBUG_OBJECT (avi, "No samples left for stream");
4712 /* EOS will be raised if all are EOS */
4720 * Read data. If we have an index it delegates to
4721 * gst_avi_demux_process_next_entry().
4723 static GstFlowReturn
4724 gst_avi_demux_stream_data (GstAviDemux * avi)
4729 GstFlowReturn res = GST_FLOW_OK;
4730 GstFormat format = GST_FORMAT_TIME;
4732 if (G_UNLIKELY (avi->have_eos)) {
4733 /* Clean adapter, we're done */
4734 gst_adapter_clear (avi->adapter);
4738 /* Iterate until need more data, so adapter won't grow too much */
4740 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4744 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4745 GST_FOURCC_ARGS (tag), size);
4747 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4748 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4749 GST_LOG ("Chunk ok");
4750 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4751 GST_DEBUG ("Found sub-index tag");
4752 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4753 /* accept 0 size buffer here */
4754 avi->abort_buffering = FALSE;
4755 GST_DEBUG (" skipping %d bytes for now", size);
4756 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4759 } else if (tag == GST_RIFF_TAG_idx1) {
4760 GST_DEBUG ("Found index tag, stream done");
4761 avi->have_eos = TRUE;
4762 return GST_FLOW_UNEXPECTED;
4763 } else if (tag == GST_RIFF_TAG_LIST) {
4764 /* movi chunks might be grouped in rec list */
4765 if (gst_adapter_available (avi->adapter) >= 12) {
4766 GST_DEBUG ("Found LIST tag, skipping LIST header");
4767 gst_adapter_flush (avi->adapter, 12);
4771 } else if (tag == GST_RIFF_TAG_JUNK) {
4772 /* rec list might contain JUNK chunks */
4773 GST_DEBUG ("Found JUNK tag");
4774 if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) {
4775 /* accept 0 size buffer here */
4776 avi->abort_buffering = FALSE;
4777 GST_DEBUG (" skipping %d bytes for now", size);
4778 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4782 GST_DEBUG ("No more stream chunks, send EOS");
4783 avi->have_eos = TRUE;
4784 return GST_FLOW_UNEXPECTED;
4787 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4788 /* supposedly one hopes to catch a nicer chunk later on ... */
4789 /* FIXME ?? give up here rather than possibly ending up going
4790 * through the whole file */
4791 if (avi->abort_buffering) {
4792 avi->abort_buffering = FALSE;
4793 gst_adapter_flush (avi->adapter, 8);
4797 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4798 GST_FOURCC_ARGS (tag), size);
4800 stream_nr = CHUNKID_TO_STREAMNR (tag);
4802 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4804 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4805 stream_nr, GST_FOURCC_ARGS (tag));
4806 avi->offset += 8 + GST_ROUND_UP_2 (size);
4807 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4809 GstAviStream *stream;
4810 GstClockTime next_ts = 0;
4813 gst_adapter_flush (avi->adapter, 8);
4816 buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size));
4817 /* patch the size */
4818 GST_BUFFER_SIZE (buf) = size;
4819 avi->offset += 8 + GST_ROUND_UP_2 (size);
4821 stream = &avi->stream[stream_nr];
4823 /* set delay (if any)
4824 if (stream->strh->init_frames == stream->current_frame &&
4826 stream->delay = next_ts;
4829 /* parsing of corresponding header may have failed */
4830 if (G_UNLIKELY (!stream->pad)) {
4831 GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT,
4832 GST_FOURCC_ARGS (tag));
4833 gst_buffer_unref (buf);
4835 GstClockTime dur_ts = 0;
4837 /* get time of this buffer */
4838 gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
4839 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4842 stream->current_entry++;
4843 stream->current_total += size;
4845 /* invert the picture if needed */
4846 buf = gst_avi_demux_invert (stream, buf);
4848 gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
4849 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4852 GST_BUFFER_TIMESTAMP (buf) = next_ts;
4853 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
4854 if (stream->strh->type == GST_RIFF_FCC_vids) {
4855 GST_BUFFER_OFFSET (buf) = stream->current_entry - 1;
4856 GST_BUFFER_OFFSET_END (buf) = stream->current_entry;
4858 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4859 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
4862 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4863 GST_DEBUG_OBJECT (avi,
4864 "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %"
4865 GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT
4866 " and size %d over pad %s", GST_TIME_ARGS (next_ts),
4867 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_BUFFER_OFFSET (buf),
4868 size, GST_PAD_NAME (stream->pad));
4870 /* update current position in the segment */
4871 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
4873 /* mark discont when pending */
4874 if (G_UNLIKELY (stream->discont)) {
4875 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4876 stream->discont = FALSE;
4878 res = gst_pad_push (stream->pad, buf);
4881 res = gst_avi_demux_combine_flows (avi, stream, res);
4882 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4883 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
4896 GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
4897 gst_format_get_name (format));
4898 res = GST_FLOW_ERROR;
4904 * Send pending tags.
4907 push_tag_lists (GstAviDemux * avi)
4914 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
4916 for (i = 0; i < avi->num_streams; i++)
4917 if (avi->stream[i].pad && avi->stream[i].taglist) {
4918 GST_DEBUG_OBJECT (avi->stream[i].pad, "Tags: %" GST_PTR_FORMAT,
4919 avi->stream[i].taglist);
4920 gst_element_found_tags_for_pad (GST_ELEMENT (avi), avi->stream[i].pad,
4921 avi->stream[i].taglist);
4922 avi->stream[i].taglist = NULL;
4925 if (avi->globaltags == NULL)
4926 avi->globaltags = gst_tag_list_new ();
4928 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE,
4929 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
4931 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, avi->globaltags);
4932 gst_element_found_tags (GST_ELEMENT (avi), avi->globaltags);
4933 avi->globaltags = NULL;
4934 avi->got_tags = FALSE;
4938 gst_avi_demux_loop (GstPad * pad)
4941 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4943 switch (avi->state) {
4944 case GST_AVI_DEMUX_START:
4945 if (G_UNLIKELY ((res =
4946 gst_avi_demux_stream_init_pull (avi)) != GST_FLOW_OK)) {
4947 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4950 avi->state = GST_AVI_DEMUX_HEADER;
4952 case GST_AVI_DEMUX_HEADER:
4953 if (G_UNLIKELY ((res =
4954 gst_avi_demux_stream_header_pull (avi)) != GST_FLOW_OK)) {
4955 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4958 avi->state = GST_AVI_DEMUX_MOVI;
4960 case GST_AVI_DEMUX_MOVI:
4961 if (G_UNLIKELY (avi->seek_event)) {
4962 gst_avi_demux_push_event (avi, avi->seek_event);
4963 avi->seek_event = NULL;
4965 if (G_UNLIKELY (avi->got_tags)) {
4966 push_tag_lists (avi);
4968 /* process each index entry in turn */
4969 res = gst_avi_demux_loop_data (avi);
4971 /* pause when error */
4972 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4973 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
4978 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
4979 res = GST_FLOW_ERROR;
4983 GST_LOG_OBJECT (avi, "state: %d res:%s", avi->state, gst_flow_get_name (res));
4989 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
4990 avi->segment_running = FALSE;
4991 gst_pad_pause_task (avi->sinkpad);
4993 if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
4994 gboolean push_eos = TRUE;
4996 if (res == GST_FLOW_UNEXPECTED) {
4997 /* handle end-of-stream/segment */
4998 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
5001 if ((stop = avi->segment.stop) == -1)
5002 stop = avi->segment.duration;
5004 GST_INFO_OBJECT (avi, "sending segment_done");
5006 gst_element_post_message
5008 gst_message_new_segment_done (GST_OBJECT (avi), GST_FORMAT_TIME,
5013 /* for fatal errors we post an error message */
5014 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
5015 (_("Internal data stream error.")),
5016 ("streaming stopped, reason %s", gst_flow_get_name (res)));
5019 GST_INFO_OBJECT (avi, "sending eos");
5020 if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) &&
5021 (res == GST_FLOW_UNEXPECTED)) {
5022 GST_ELEMENT_ERROR (avi, STREAM, DEMUX,
5023 (NULL), ("got eos but no streams (yet)"));
5030 static GstFlowReturn
5031 gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
5034 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
5036 GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
5037 gst_adapter_push (avi->adapter, buf);
5039 switch (avi->state) {
5040 case GST_AVI_DEMUX_START:
5041 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
5042 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
5046 case GST_AVI_DEMUX_HEADER:
5047 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
5048 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
5052 case GST_AVI_DEMUX_MOVI:
5053 if (G_UNLIKELY (avi->seek_event)) {
5054 gst_avi_demux_push_event (avi, avi->seek_event);
5055 avi->seek_event = NULL;
5057 if (G_UNLIKELY (avi->got_tags)) {
5058 push_tag_lists (avi);
5060 res = gst_avi_demux_stream_data (avi);
5063 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
5064 ("Illegal internal state"));
5065 res = GST_FLOW_ERROR;
5069 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
5070 gst_flow_get_name (res));
5072 if (G_UNLIKELY (avi->abort_buffering)) {
5073 avi->abort_buffering = FALSE;
5074 res = GST_FLOW_ERROR;
5075 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, NULL, ("unhandled buffer size"));
5082 gst_avi_demux_sink_activate (GstPad * sinkpad)
5084 if (gst_pad_check_pull_range (sinkpad)) {
5085 GST_DEBUG ("going to pull mode");
5086 return gst_pad_activate_pull (sinkpad, TRUE);
5088 GST_DEBUG ("going to push (streaming) mode");
5089 return gst_pad_activate_push (sinkpad, TRUE);
5094 gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
5096 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
5099 avi->segment_running = TRUE;
5100 avi->streaming = FALSE;
5101 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
5104 avi->segment_running = FALSE;
5105 return gst_pad_stop_task (sinkpad);
5110 gst_avi_demux_activate_push (GstPad * pad, gboolean active)
5112 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
5115 GST_DEBUG ("avi: activating push/chain function");
5116 avi->streaming = TRUE;
5118 GST_DEBUG ("avi: deactivating push/chain function");
5124 static GstStateChangeReturn
5125 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
5127 GstStateChangeReturn ret;
5128 GstAviDemux *avi = GST_AVI_DEMUX (element);
5130 switch (transition) {
5131 case GST_STATE_CHANGE_READY_TO_PAUSED:
5132 avi->streaming = FALSE;
5133 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
5139 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
5140 if (ret == GST_STATE_CHANGE_FAILURE)
5143 switch (transition) {
5144 case GST_STATE_CHANGE_PAUSED_TO_READY:
5145 gst_avi_demux_reset (avi);