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>
55 GST_DEBUG_CATEGORY_STATIC (avidemux_debug);
56 #define GST_CAT_DEFAULT avidemux_debug
58 GST_DEBUG_CATEGORY_EXTERN (GST_CAT_EVENT);
60 static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
63 GST_STATIC_CAPS ("video/x-msvideo")
66 static void gst_avi_demux_base_init (GstAviDemuxClass * klass);
67 static void gst_avi_demux_class_init (GstAviDemuxClass * klass);
68 static void gst_avi_demux_init (GstAviDemux * avi);
69 static void gst_avi_demux_finalize (GObject * object);
71 static void gst_avi_demux_reset (GstAviDemux * avi);
74 static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad);
76 static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event);
77 static gboolean gst_avi_demux_handle_sink_event (GstPad * pad,
81 static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad);
83 static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad);
84 static gboolean gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query);
85 static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format,
86 gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
88 static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment);
89 static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad,
91 static void gst_avi_demux_loop (GstPad * pad);
92 static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad);
93 static gboolean gst_avi_demux_sink_activate_pull (GstPad * sinkpad,
95 static gboolean gst_avi_demux_activate_push (GstPad * pad, gboolean active);
96 static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstBuffer * buf);
98 static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element,
99 GstStateChange transition);
101 static GstElementClass *parent_class = NULL;
103 /* GObject methods */
106 gst_avi_demux_get_type (void)
108 static GType avi_demux_type = 0;
110 if (!avi_demux_type) {
111 static const GTypeInfo avi_demux_info = {
112 sizeof (GstAviDemuxClass),
113 (GBaseInitFunc) gst_avi_demux_base_init,
115 (GClassInitFunc) gst_avi_demux_class_init,
118 sizeof (GstAviDemux),
120 (GInstanceInitFunc) gst_avi_demux_init,
124 g_type_register_static (GST_TYPE_ELEMENT,
125 "GstAviDemux", &avi_demux_info, 0);
128 return avi_demux_type;
132 gst_avi_demux_base_init (GstAviDemuxClass * klass)
134 static const GstElementDetails gst_avi_demux_details =
135 GST_ELEMENT_DETAILS ("Avi demuxer",
137 "Demultiplex an avi file into audio and video",
138 "Erik Walthinsen <omega@cse.ogi.edu>\n"
139 "Wim Taymans <wim.taymans@chello.be>\n"
140 "Ronald Bultje <rbultje@ronald.bitfreak.net>\n"
141 "Thijs Vermeir <thijsvermeir@gmail.com>");
142 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
143 GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl;
144 GstCaps *audcaps, *vidcaps, *subcaps;
146 audcaps = gst_riff_create_audio_template_caps ();
147 gst_caps_append (audcaps, gst_caps_new_simple ("audio/x-avi-unknown", NULL));
148 audiosrctempl = gst_pad_template_new ("audio_%02d",
149 GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps);
151 vidcaps = gst_riff_create_video_template_caps ();
152 gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ());
153 gst_caps_append (vidcaps, gst_caps_new_simple ("video/x-avi-unknown", NULL));
154 videosrctempl = gst_pad_template_new ("video_%02d",
155 GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps);
157 subcaps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
158 subsrctempl = gst_pad_template_new ("subtitle_%02d",
159 GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps);
160 gst_element_class_add_pad_template (element_class, audiosrctempl);
161 gst_element_class_add_pad_template (element_class, videosrctempl);
162 gst_element_class_add_pad_template (element_class, subsrctempl);
163 gst_element_class_add_pad_template (element_class,
164 gst_static_pad_template_get (&sink_templ));
165 gst_element_class_set_details (element_class, &gst_avi_demux_details);
169 gst_avi_demux_class_init (GstAviDemuxClass * klass)
171 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
172 GObjectClass *gobject_class = (GObjectClass *) klass;
174 GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux",
175 0, "Demuxer for AVI streams");
177 parent_class = g_type_class_peek_parent (klass);
179 gobject_class->finalize = gst_avi_demux_finalize;
180 gstelement_class->change_state =
181 GST_DEBUG_FUNCPTR (gst_avi_demux_change_state);
185 gst_avi_demux_init (GstAviDemux * avi)
187 avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
188 gst_pad_set_activate_function (avi->sinkpad, gst_avi_demux_sink_activate);
189 gst_pad_set_activatepull_function (avi->sinkpad,
190 gst_avi_demux_sink_activate_pull);
191 gst_pad_set_activatepush_function (avi->sinkpad, gst_avi_demux_activate_push);
192 gst_pad_set_chain_function (avi->sinkpad, gst_avi_demux_chain);
193 gst_pad_set_event_function (avi->sinkpad, gst_avi_demux_handle_sink_event);
194 gst_element_add_pad (GST_ELEMENT (avi), avi->sinkpad);
196 avi->adapter = gst_adapter_new ();
198 gst_avi_demux_reset (avi);
202 gst_avi_demux_finalize (GObject * object)
204 GstAviDemux *avi = GST_AVI_DEMUX (object);
206 GST_DEBUG ("AVI: finalize");
208 g_object_unref (avi->adapter);
210 G_OBJECT_CLASS (parent_class)->finalize (object);
214 gst_avi_demux_reset (GstAviDemux * avi)
218 GST_DEBUG ("AVI: reset");
220 for (i = 0; i < avi->num_streams; i++) {
221 g_free (avi->stream[i].strh);
222 g_free (avi->stream[i].strf.data);
223 if (avi->stream[i].name)
224 g_free (avi->stream[i].name);
225 if (avi->stream[i].initdata)
226 gst_buffer_unref (avi->stream[i].initdata);
227 if (avi->stream[i].extradata)
228 gst_buffer_unref (avi->stream[i].extradata);
229 if (avi->stream[i].pad) {
230 gst_pad_set_active (avi->stream[i].pad, FALSE);
231 gst_element_remove_pad (GST_ELEMENT (avi), avi->stream[i].pad);
233 if (avi->stream[i].taglist) {
234 gst_tag_list_free (avi->stream[i].taglist);
235 avi->stream[i].taglist = NULL;
238 memset (&avi->stream, 0, sizeof (avi->stream));
240 avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST;
241 avi->num_streams = 0;
242 avi->num_v_streams = 0;
243 avi->num_a_streams = 0;
244 avi->num_t_streams = 0;
246 avi->state = GST_AVI_DEMUX_START;
249 g_free (avi->index_entries);
250 avi->index_entries = NULL;
252 avi->index_offset = 0;
253 avi->current_entry = 0;
257 if (avi->seek_event) {
258 gst_event_unref (avi->seek_event);
259 avi->seek_event = NULL;
263 gst_tag_list_free (avi->globaltags);
264 avi->globaltags = NULL;
266 avi->got_tags = TRUE; /* we always want to push global tags */
267 avi->have_eos = FALSE;
269 gst_adapter_clear (avi->adapter);
271 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
275 static gst_avi_index_entry *
276 gst_avi_demux_index_last (GstAviDemux * avi, gint stream_nr)
279 gst_avi_index_entry *result = NULL;
281 for (i = avi->index_size - 1; i >= 0; i--) {
282 if (avi->index_entries[i].stream_nr == stream_nr) {
283 result = &avi->index_entries[i];
290 static gst_avi_index_entry *
291 gst_avi_demux_index_next (GstAviDemux * avi, gint stream_nr, gint last,
295 gst_avi_index_entry *result = NULL, *entry;
297 for (i = last + 1; i < avi->index_size; i++) {
298 entry = &avi->index_entries[i];
300 if (entry->stream_nr != stream_nr)
303 if ((entry->flags & flags) == flags) {
311 static gst_avi_index_entry *
312 gst_avi_demux_index_prev (GstAviDemux * avi, gint stream_nr, gint last,
316 gst_avi_index_entry *result = NULL, *entry;
318 for (i = last - 1; i >= 0; i--) {
319 entry = &avi->index_entries[i];
321 if (entry->stream_nr != stream_nr)
324 if ((entry->flags & flags) == flags) {
333 gst_avi_demux_index_entry_search (gst_avi_index_entry * entry, guint64 * time)
335 if (entry->ts < *time)
337 else if (entry->ts > *time)
343 * gst_avi_index_entry:
345 * @stream_nr: stream number
346 * @time: seek time position
348 * Finds the index entry which time is less or equal than the requested time.
350 * Returns: the found index entry or %NULL
352 static gst_avi_index_entry *
353 gst_avi_demux_index_entry_for_time (GstAviDemux * avi,
354 gint stream_nr, guint64 time)
356 gst_avi_index_entry *entry = NULL;
359 GST_LOG_OBJECT (avi, "stream_nr:%d , time:%" GST_TIME_FORMAT,
360 stream_nr, GST_TIME_ARGS (time));
362 entry = gst_util_array_binary_search (avi->index_entries,
364 sizeof (gst_avi_index_entry),
365 (GCompareDataFunc) gst_avi_demux_index_entry_search,
366 GST_SEARCH_MODE_BEFORE, &time, NULL);
368 n = entry - avi->index_entries;
370 entry = &avi->index_entries[0];
372 while (entry->stream_nr != stream_nr && n < avi->index_size - 1) {
374 entry = &avi->index_entries[n];
376 } else if (entry->stream_nr != stream_nr) {
377 while (entry->stream_nr != stream_nr && n > 0) {
379 entry = &avi->index_entries[n];
384 "best at entry %u / ts:%" GST_TIME_FORMAT " / dur:%" GST_TIME_FORMAT
385 " flags:%02x", n, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur),
391 /* GstElement methods */
394 static const GstFormat *
395 gst_avi_demux_get_src_formats (GstPad * pad)
397 avi_stream_context *stream = gst_pad_get_element_private (pad);
399 static const GstFormat src_a_formats[] = {
405 static const GstFormat src_v_formats[] = {
411 return (stream->strh->type == GST_RIFF_FCC_auds ?
412 src_a_formats : src_v_formats);
416 /* assumes stream->strf.auds->av_bps != 0 */
417 static inline GstClockTime
418 avi_stream_convert_bytes_to_time_unchecked (avi_stream_context * stream,
421 return gst_util_uint64_scale (bytes, GST_SECOND, stream->strf.auds->av_bps);
424 /* assumes stream->strh->rate != 0 */
425 static inline GstClockTime
426 avi_stream_convert_frames_to_time_unchecked (avi_stream_context * stream,
429 return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND,
434 gst_avi_demux_src_convert (GstPad * pad,
435 GstFormat src_format,
436 gint64 src_value, GstFormat * dest_format, gint64 * dest_value)
438 avi_stream_context *stream = gst_pad_get_element_private (pad);
442 "Received src_format:%s, src_value:%" G_GUINT64_FORMAT
443 ", dest_format:%s", gst_format_get_name (src_format), src_value,
444 gst_format_get_name (*dest_format));
446 if (G_UNLIKELY (src_format == *dest_format)) {
447 *dest_value = src_value;
450 if (G_UNLIKELY (!stream->strh || !stream->strf.data)) {
454 if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids &&
455 (src_format == GST_FORMAT_BYTES
456 || *dest_format == GST_FORMAT_BYTES))) {
461 switch (src_format) {
462 case GST_FORMAT_TIME:
463 switch (*dest_format) {
464 case GST_FORMAT_BYTES:
465 *dest_value = gst_util_uint64_scale (src_value,
466 (guint64) stream->strf.auds->av_bps, GST_SECOND);
468 case GST_FORMAT_DEFAULT:
472 *dest_value = gst_util_uint64_scale (src_value, stream->strh->rate,
473 stream->strh->scale * GST_SECOND);
475 /* Attempt to round to nearest integer: if the difference is more
476 * than 0.5 (less than -0.5), it means that gst_util_uint64_scale()
477 * just truncated an integer, while it had to be rounded
479 error = *dest_value * GST_SECOND -
480 src_value * stream->strh->rate / stream->strh->scale;
490 case GST_FORMAT_BYTES:
491 switch (*dest_format) {
492 case GST_FORMAT_TIME:
493 if (stream->strf.auds->av_bps != 0) {
494 *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream,
504 case GST_FORMAT_DEFAULT:
505 switch (*dest_format) {
506 case GST_FORMAT_TIME:
508 avi_stream_convert_frames_to_time_unchecked (stream, src_value);
521 "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res,
522 gst_format_get_name (*dest_format), *dest_value);
526 static const GstQueryType *
527 gst_avi_demux_get_src_query_types (GstPad * pad)
529 static const GstQueryType src_types[] = {
541 gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query)
544 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
546 avi_stream_context *stream = gst_pad_get_element_private (pad);
548 if (!stream->strh || !stream->strf.data)
549 return gst_pad_query_default (pad, query);
551 switch (GST_QUERY_TYPE (query)) {
552 case GST_QUERY_POSITION:{
555 GST_DEBUG ("pos query for stream %d: frames %d, bytes %" G_GUINT64_FORMAT,
556 stream->num, stream->current_frame, stream->current_byte);
558 if (stream->strh->type == GST_RIFF_FCC_auds) {
559 if (stream->is_vbr) {
561 pos = gst_util_uint64_scale ((gint64) stream->current_frame *
562 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
563 GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %"
564 GST_TIME_FORMAT, stream->current_frame, GST_TIME_ARGS (pos));
565 } else if (stream->strf.auds->av_bps != 0) {
567 pos = gst_util_uint64_scale (stream->current_byte, GST_SECOND,
568 (guint64) stream->strf.auds->av_bps);
569 GST_DEBUG_OBJECT (avi,
570 "CBR convert bytes %" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT,
571 stream->current_byte, GST_TIME_ARGS (pos));
572 } else if (stream->total_frames != 0 && stream->total_bytes != 0) {
573 /* calculate timestamps based on percentage of length */
574 guint64 xlen = avi->avih->us_frame *
575 avi->avih->tot_frames * GST_USECOND;
577 if (stream->is_vbr) {
578 pos = gst_util_uint64_scale (xlen, stream->current_frame,
579 stream->total_frames);
580 GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %"
581 GST_TIME_FORMAT, stream->current_frame, GST_TIME_ARGS (pos));
583 pos = gst_util_uint64_scale (xlen, stream->current_byte,
584 stream->total_bytes);
585 GST_DEBUG_OBJECT (avi, "CBR perc convert bytes %" G_GUINT64_FORMAT
586 ", time %" GST_TIME_FORMAT, stream->current_byte,
587 GST_TIME_ARGS (pos));
594 if (stream->strh->rate != 0) {
595 pos = gst_util_uint64_scale ((guint64) stream->current_frame *
596 stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate);
598 pos = stream->current_frame * avi->avih->us_frame * GST_USECOND;
602 GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
603 gst_query_set_position (query, GST_FORMAT_TIME, pos);
605 GST_WARNING ("pos query failed");
608 case GST_QUERY_DURATION:
612 if (stream->strh->type != GST_RIFF_FCC_auds &&
613 stream->strh->type != GST_RIFF_FCC_vids) {
618 gst_query_parse_duration (query, &fmt, NULL);
621 case GST_FORMAT_TIME:
622 gst_query_set_duration (query, fmt, stream->duration);
624 case GST_FORMAT_DEFAULT:
627 GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT,
628 stream->total_frames);
630 if (stream->total_frames >= 0)
631 gst_query_set_duration (query, fmt, stream->total_frames);
632 else if (gst_pad_query_convert (pad, GST_FORMAT_TIME,
633 stream->duration, &fmt, &dur))
634 gst_query_set_duration (query, fmt, dur);
643 case GST_QUERY_SEEKING:{
646 gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
647 if (fmt == GST_FORMAT_TIME) {
648 gboolean seekable = TRUE;
650 if (avi->streaming) {
653 if (avi->index_entries == NULL) {
655 /* FIXME: when building index_entried, count keyframes
656 if (!(avi->key_frame_ct > 1))
662 gst_query_set_seeking (query, GST_FORMAT_TIME, seekable,
663 0, stream->duration);
668 case GST_QUERY_CONVERT:{
669 GstFormat src_fmt, dest_fmt;
670 gint64 src_val, dest_val;
672 gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
673 if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt,
675 gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
677 res = gst_pad_query_default (pad, query);
681 res = gst_pad_query_default (pad, query);
685 gst_object_unref (avi);
690 static const GstEventMask *
691 gst_avi_demux_get_event_mask (GstPad * pad)
693 static const GstEventMask masks[] = {
694 {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT},
703 gst_avi_demux_handle_sink_event (GstPad * pad, GstEvent * event)
706 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
708 GST_DEBUG_OBJECT (avi,
709 "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event);
711 switch (GST_EVENT_TYPE (event)) {
712 case GST_EVENT_NEWSEGMENT:
713 /* Drop NEWSEGMENT events, new ones are generated later */
714 gst_event_unref (event);
717 res = gst_pad_event_default (pad, event);
721 gst_object_unref (avi);
727 gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event)
730 GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad));
732 GST_DEBUG_OBJECT (avi,
733 "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event);
735 switch (GST_EVENT_TYPE (event)) {
737 /* handle seeking only in pull mode */
738 if (!avi->streaming) {
739 res = gst_avi_demux_handle_seek (avi, pad, event);
740 gst_event_unref (event);
742 res = gst_pad_event_default (pad, event);
746 case GST_EVENT_NAVIGATION:
748 gst_event_unref (event);
751 res = gst_pad_event_default (pad, event);
755 gst_object_unref (avi);
760 /* streaming helper (push) */
763 * gst_avi_demux_peek_chunk_info:
765 * @tag: holder for tag
766 * @size: holder for tag size
768 * Peek next chunk info (tag and size)
770 * Returns: TRUE when one chunk info has been got
773 gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size)
775 const guint8 *data = NULL;
777 if (gst_adapter_available (avi->adapter) < 8) {
781 data = gst_adapter_peek (avi->adapter, 8);
782 *tag = GST_READ_UINT32_LE (data);
783 *size = GST_READ_UINT32_LE (data + 4);
789 * gst_avi_demux_peek_chunk:
791 * @tag: holder for tag
792 * @size: holder for tag size
794 * Peek enough data for one full chunk
796 * Returns: %TRUE when one chunk has been got
799 gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size)
801 guint32 peek_size = 0;
804 if (!gst_avi_demux_peek_chunk_info (avi, tag, size)) {
807 /* FIXME: shouldn't this check go to gst_avi_demux_peek_chunk_info() already */
808 if (!(*size) || (*size) == -1) {
809 GST_INFO ("Invalid chunk size %d for tag %" GST_FOURCC_FORMAT,
810 *size, GST_FOURCC_ARGS (*tag));
813 peek_size = (*size + 1) & ~1;
814 available = gst_adapter_available (avi->adapter);
816 GST_DEBUG ("Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT
817 ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available);
819 if (available >= (8 + peek_size)) {
829 * gst_avi_demux_parse_file_header:
830 * @element: caller element (used for errors/debug).
831 * @buf: input data to be used for parsing.
833 * "Open" a RIFF/AVI file. The buffer should be at least 12
834 * bytes long. Takes ownership of @buf.
836 * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise.
837 * Throws an error, caller should error out (fatal).
840 gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf)
844 /* riff_parse posts an error */
845 if (!gst_riff_parse_file_header (element, buf, &doctype))
848 if (doctype != GST_RIFF_RIFF_AVI)
856 GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
857 ("File is not an AVI file: %" GST_FOURCC_FORMAT,
858 GST_FOURCC_ARGS (doctype)));
864 * Read AVI file tag when streaming
867 gst_avi_demux_stream_init_push (GstAviDemux * avi)
869 if (gst_adapter_available (avi->adapter) >= 12) {
872 tmp = gst_adapter_take_buffer (avi->adapter, 12);
874 GST_DEBUG ("Parsing avi header");
875 if (!gst_avi_demux_parse_file_header (GST_ELEMENT (avi), tmp)) {
876 return GST_FLOW_ERROR;
878 GST_DEBUG ("header ok");
881 avi->state = GST_AVI_DEMUX_HEADER;
890 gst_avi_demux_stream_init_pull (GstAviDemux * avi)
893 GstBuffer *buf = NULL;
895 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
896 if (res != GST_FLOW_OK)
898 else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf))
908 GST_DEBUG_OBJECT (avi, "error parsing file header");
909 return GST_FLOW_ERROR;
913 /* AVI header handling */
916 * gst_avi_demux_parse_avih:
917 * @element: caller element (used for errors/debug).
918 * @buf: input data to be used for parsing.
919 * @avih: pointer to structure (filled in by function) containing
920 * stream information (such as flags, number of streams, etc.).
922 * Read 'avih' header. Discards buffer after use.
924 * Returns: TRUE on success, FALSE otherwise. Throws an error if
925 * the header is invalid. The caller should error out
929 gst_avi_demux_parse_avih (GstElement * element,
930 GstBuffer * buf, gst_riff_avih ** _avih)
937 if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih))
940 avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
942 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
943 avih->us_frame = GUINT32_FROM_LE (avih->us_frame);
944 avih->max_bps = GUINT32_FROM_LE (avih->max_bps);
945 avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran);
946 avih->flags = GUINT32_FROM_LE (avih->flags);
947 avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
948 avih->init_frames = GUINT32_FROM_LE (avih->init_frames);
949 avih->streams = GUINT32_FROM_LE (avih->streams);
950 avih->bufsize = GUINT32_FROM_LE (avih->bufsize);
951 avih->width = GUINT32_FROM_LE (avih->width);
952 avih->height = GUINT32_FROM_LE (avih->height);
953 avih->scale = GUINT32_FROM_LE (avih->scale);
954 avih->rate = GUINT32_FROM_LE (avih->rate);
955 avih->start = GUINT32_FROM_LE (avih->start);
956 avih->length = GUINT32_FROM_LE (avih->length);
960 GST_INFO_OBJECT (element, "avih tag found:");
961 GST_INFO_OBJECT (element, " us_frame %u", avih->us_frame);
962 GST_INFO_OBJECT (element, " max_bps %u", avih->max_bps);
963 GST_INFO_OBJECT (element, " pad_gran %u", avih->pad_gran);
964 GST_INFO_OBJECT (element, " flags 0x%08x", avih->flags);
965 GST_INFO_OBJECT (element, " tot_frames %u", avih->tot_frames);
966 GST_INFO_OBJECT (element, " init_frames %u", avih->init_frames);
967 GST_INFO_OBJECT (element, " streams %u", avih->streams);
968 GST_INFO_OBJECT (element, " bufsize %u", avih->bufsize);
969 GST_INFO_OBJECT (element, " width %u", avih->width);
970 GST_INFO_OBJECT (element, " height %u", avih->height);
971 GST_INFO_OBJECT (element, " scale %u", avih->scale);
972 GST_INFO_OBJECT (element, " rate %u", avih->rate);
973 GST_INFO_OBJECT (element, " start %u", avih->start);
974 GST_INFO_OBJECT (element, " length %u", avih->length);
977 gst_buffer_unref (buf);
984 GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL), ("No buffer"));
989 GST_ELEMENT_ERROR (element, STREAM, DEMUX, (NULL),
990 ("Too small avih (%d available, %d needed)",
991 GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih)));
992 gst_buffer_unref (buf);
998 * gst_avi_demux_parse_superindex:
999 * @avi: caller element (used for debugging/errors).
1000 * @buf: input data to use for parsing.
1001 * @locations: locations in the file (byte-offsets) that contain
1002 * the actual indexes (see get_avi_demux_parse_subindex()).
1003 * The array ends with GST_BUFFER_OFFSET_NONE.
1005 * Reads superindex (openDML-2 spec stuff) from the provided data.
1007 * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped
1008 * on error, but they are not fatal.
1011 gst_avi_demux_parse_superindex (GstAviDemux * avi,
1012 GstBuffer * buf, guint64 ** _indexes)
1022 size = buf ? GST_BUFFER_SIZE (buf) : 0;
1026 data = GST_BUFFER_DATA (buf);
1028 /* check type of index. The opendml2 specs state that
1029 * there should be 4 dwords per array entry. Type can be
1030 * either frame or field (and we don't care). */
1031 if (GST_READ_UINT16_LE (data) != 4 ||
1032 (data[2] & 0xfe) != 0x0 || data[3] != 0x0) {
1033 GST_WARNING_OBJECT (avi,
1034 "Superindex for stream has unexpected "
1035 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1036 GST_READ_UINT16_LE (data), data[2], data[3]);
1037 bpe = GST_READ_UINT16_LE (data) * 4;
1039 num = GST_READ_UINT32_LE (&data[4]);
1041 indexes = g_new (guint64, num + 1);
1042 for (i = 0; i < num; i++) {
1043 if (size < 24 + bpe * (i + 1))
1045 indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]);
1047 indexes[i] = GST_BUFFER_OFFSET_NONE;
1048 *_indexes = indexes;
1050 gst_buffer_unref (buf);
1057 GST_ERROR_OBJECT (avi,
1058 "Not enough data to parse superindex (%d available, 24 needed)", size);
1060 gst_buffer_unref (buf);
1066 * gst_avi_demux_parse_subindex:
1068 * @buf: input data to use for parsing.
1069 * @stream: stream context.
1070 * @entries_list: a list (returned by the function) containing all the
1071 * indexes parsed in this specific subindex. The first
1072 * entry is also a pointer to allocated memory that needs
1073 * to be free´ed. May be NULL if no supported indexes were
1076 * Reads superindex (openDML-2 spec stuff) from the provided data.
1077 * The buffer will be discarded after use.
1079 * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we
1080 * throw an error, caller should bail out asap.
1083 gst_avi_demux_parse_subindex (GstAviDemux * avi,
1084 GstBuffer * buf, avi_stream_context * stream, GList ** _entries_list)
1086 guint8 *data = GST_BUFFER_DATA (buf);
1090 gst_avi_index_entry *entries, *entry;
1091 GList *entries_list = NULL;
1094 *_entries_list = NULL;
1096 size = buf ? GST_BUFFER_SIZE (buf) : 0;
1102 /* We don't support index-data yet */
1104 goto not_implemented;
1106 /* check type of index. The opendml2 specs state that
1107 * there should be 4 dwords per array entry. Type can be
1108 * either frame or field (and we don't care). */
1109 bpe = (data[2] & 0x01) ? 12 : 8;
1110 if (GST_READ_UINT16_LE (data) != bpe / 4 ||
1111 (data[2] & 0xfe) != 0x0 || data[3] != 0x1) {
1112 GST_WARNING_OBJECT (avi,
1113 "Superindex for stream %d has unexpected "
1114 "size_entry %d (bytes) or flags 0x%02x/0x%02x",
1115 stream->num, GST_READ_UINT16_LE (data), data[2], data[3]);
1116 bpe = GST_READ_UINT16_LE (data) * 4;
1118 num = GST_READ_UINT32_LE (&data[4]);
1119 baseoff = GST_READ_UINT64_LE (&data[12]);
1121 /* If there's nothing, just return ! */
1125 if (!(entries = g_try_new (gst_avi_index_entry, num)))
1128 for (i = 0; i < num; i++) {
1131 entry = &entries[i];
1133 if (size < 24 + bpe * (i + 1))
1137 entry->offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]);
1138 entry->size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]);
1140 (entry->size & 0x80000000) ? 0 : GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
1141 entry->size &= ~0x80000000;
1142 entry->index_nr = i;
1143 entry->stream_nr = stream->num;
1145 /* stream duration unknown, now we can calculate it */
1146 if (stream->idx_duration == -1)
1147 stream->idx_duration = 0;
1150 entry->ts = stream->idx_duration;
1151 if (stream->is_vbr) {
1152 /* VBR stream next timestamp */
1153 if (stream->strh->type == GST_RIFF_FCC_auds) {
1154 next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
1155 stream->total_blocks + 1);
1157 next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
1158 stream->total_frames + 1);
1161 /* CBR get next timestamp */
1162 next_ts = avi_stream_convert_bytes_to_time_unchecked (stream,
1163 stream->total_bytes + entry->size);
1165 /* duration is next - current */
1166 entry->dur = next_ts - entry->ts;
1168 /* stream position */
1169 entry->bytes_before = stream->total_bytes;
1170 entry->frames_before = stream->total_frames;
1172 stream->total_bytes += entry->size;
1173 stream->total_frames++;
1174 if (stream->strh->type == GST_RIFF_FCC_auds) {
1175 if (stream->strf.auds->blockalign > 0)
1176 stream->total_blocks +=
1177 (entry->size + stream->strf.auds->blockalign -
1178 1) / stream->strf.auds->blockalign;
1180 stream->total_blocks++;
1182 stream->idx_duration = next_ts;
1184 entries_list = g_list_prepend (entries_list, entry);
1187 GST_LOG_OBJECT (avi, "Read %d index entries", i);
1189 gst_buffer_unref (buf);
1192 *_entries_list = g_list_reverse (entries_list);
1202 GST_ERROR_OBJECT (avi,
1203 "Not enough data to parse subindex (%d available, 24 needed)", size);
1205 gst_buffer_unref (buf);
1206 return TRUE; /* continue */
1210 GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL),
1211 ("Subindex-is-data is not implemented"));
1212 gst_buffer_unref (buf);
1217 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
1218 ("Cannot allocate memory for %u*%u=%u bytes",
1219 (guint) sizeof (gst_avi_index_entry), num,
1220 (guint) sizeof (gst_avi_index_entry) * num));
1221 gst_buffer_unref (buf);
1228 * Read AVI index when streaming
1231 gst_avi_demux_read_subindexes_push (GstAviDemux * avi,
1232 GList ** index, GList ** alloc_list)
1235 guint32 tag = 0, size;
1236 GstBuffer *buf = NULL;
1239 GST_DEBUG_OBJECT (avi, "gst_avi_demux_read_subindexes_push for %d streams",
1242 for (n = 0; n < avi->num_streams; n++) {
1243 avi_stream_context *stream = &avi->stream[n];
1245 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1246 if (!gst_avi_demux_peek_chunk (avi, &tag, &size))
1248 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1249 '0' + stream->num % 10)) &&
1250 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1251 '0' + stream->num % 10, 'i', 'x'))) {
1252 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1253 GST_FOURCC_ARGS (tag));
1257 avi->offset += 8 + ((size + 1) & ~1);
1259 buf = gst_buffer_new ();
1260 GST_BUFFER_DATA (buf) = gst_adapter_take (avi->adapter, size);
1261 GST_BUFFER_SIZE (buf) = size;
1263 if (!gst_avi_demux_parse_subindex (avi, buf, stream, &list))
1266 GST_DEBUG_OBJECT (avi, " adding %d entries", g_list_length (list));
1267 *alloc_list = g_list_append (*alloc_list, list->data);
1268 *index = g_list_concat (*index, list);
1272 g_free (stream->indexes);
1273 stream->indexes = NULL;
1275 GST_DEBUG_OBJECT (avi, "index %s", ((*index) ? "!= 0" : "== 0"));
1283 gst_avi_demux_read_subindexes_pull (GstAviDemux * avi,
1284 GList ** index, GList ** alloc_list)
1291 GST_DEBUG_OBJECT (avi, "gst_avi_demux_read_subindexes_pull for %d streams",
1294 for (n = 0; n < avi->num_streams; n++) {
1295 avi_stream_context *stream = &avi->stream[n];
1297 for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) {
1298 if (gst_riff_read_chunk (GST_ELEMENT (avi), avi->sinkpad,
1299 &stream->indexes[i], &tag, &buf) != GST_FLOW_OK)
1301 else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10,
1302 '0' + stream->num % 10)) &&
1303 (tag != GST_MAKE_FOURCC ('0' + stream->num / 10,
1304 '0' + stream->num % 10, 'i', 'x'))) {
1305 /* Some ODML files (created by god knows what muxer) have a ##ix format
1306 * instead of the 'official' ix##. They are still valid though. */
1307 GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")",
1308 GST_FOURCC_ARGS (tag));
1309 gst_buffer_unref (buf);
1313 if (!gst_avi_demux_parse_subindex (avi, buf, stream, &list))
1316 GST_DEBUG_OBJECT (avi, " adding %5d entries, total %2d %5d",
1317 g_list_length (list), g_list_length (*alloc_list),
1318 g_list_length (*index));
1319 *alloc_list = g_list_append (*alloc_list, list->data);
1320 *index = g_list_concat (*index, list);
1324 g_free (stream->indexes);
1325 stream->indexes = NULL;
1327 GST_DEBUG_OBJECT (avi, "index %s", ((*index) ? "!= 0" : "== 0"));
1331 * gst_avi_demux_riff_parse_vprp:
1332 * @element: caller element (used for debugging/error).
1333 * @buf: input data to be used for parsing, stripped from header.
1334 * @vprp: a pointer (returned by this function) to a filled-in vprp
1335 * structure. Caller should free it.
1337 * Parses a video stream´s vprp. This function takes ownership of @buf.
1339 * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream
1340 * should be skipped on error, but it is not fatal.
1343 gst_avi_demux_riff_parse_vprp (GstElement * element,
1344 GstBuffer * buf, gst_riff_vprp ** _vprp)
1346 gst_riff_vprp *vprp;
1349 g_return_val_if_fail (buf != NULL, FALSE);
1350 g_return_val_if_fail (_vprp != NULL, FALSE);
1352 if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info))
1355 vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
1357 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1358 vprp->format_token = GUINT32_FROM_LE (vprp->format_token);
1359 vprp->standard = GUINT32_FROM_LE (vprp->standard);
1360 vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate);
1361 vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total);
1362 vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines);
1363 vprp->aspect = GUINT32_FROM_LE (vprp->aspect);
1364 vprp->width = GUINT32_FROM_LE (vprp->width);
1365 vprp->height = GUINT32_FROM_LE (vprp->height);
1366 vprp->fields = GUINT32_FROM_LE (vprp->fields);
1370 /* calculate fields based on size */
1371 k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) /
1373 if (vprp->fields > k) {
1374 GST_WARNING_OBJECT (element,
1375 "vprp header indicated %d fields, only %d available", vprp->fields, k);
1378 if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) {
1379 GST_WARNING_OBJECT (element,
1380 "vprp header indicated %d fields, at most %d supported", vprp->fields,
1381 GST_RIFF_VPRP_VIDEO_FIELDS);
1382 vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS;
1384 #if (G_BYTE_ORDER == G_BIG_ENDIAN)
1385 for (k = 0; k < vprp->fields; k++) {
1386 gst_riff_vprp_video_field_desc *fd;
1388 fd = &vprp->field_info[k];
1389 fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height);
1390 fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width);
1391 fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height);
1392 fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width);
1393 fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset);
1394 fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset);
1395 fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset);
1396 fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start);
1401 GST_INFO_OBJECT (element, "vprp tag found in context vids:");
1402 GST_INFO_OBJECT (element, " format_token %d", vprp->format_token);
1403 GST_INFO_OBJECT (element, " standard %d", vprp->standard);
1404 GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate);
1405 GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total);
1406 GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines);
1407 GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16,
1408 vprp->aspect & 0xffff);
1409 GST_INFO_OBJECT (element, " width %d", vprp->width);
1410 GST_INFO_OBJECT (element, " height %d", vprp->height);
1411 GST_INFO_OBJECT (element, " fields %d", vprp->fields);
1412 for (k = 0; k < vprp->fields; k++) {
1413 gst_riff_vprp_video_field_desc *fd;
1415 fd = &(vprp->field_info[k]);
1416 GST_INFO_OBJECT (element, " field %u description:", k);
1417 GST_INFO_OBJECT (element, " compressed_bm_height %d",
1418 fd->compressed_bm_height);
1419 GST_INFO_OBJECT (element, " compressed_bm_width %d",
1420 fd->compressed_bm_width);
1421 GST_INFO_OBJECT (element, " valid_bm_height %d",
1422 fd->valid_bm_height);
1423 GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width);
1424 GST_INFO_OBJECT (element, " valid_bm_x_offset %d",
1425 fd->valid_bm_x_offset);
1426 GST_INFO_OBJECT (element, " valid_bm_y_offset %d",
1427 fd->valid_bm_y_offset);
1428 GST_INFO_OBJECT (element, " video_x_t_offset %d",
1429 fd->video_x_t_offset);
1430 GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start);
1433 gst_buffer_unref (buf);
1442 GST_ERROR_OBJECT (element,
1443 "Too small vprp (%d available, at least %d needed)",
1444 GST_BUFFER_SIZE (buf),
1445 (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info));
1446 gst_buffer_unref (buf);
1452 * gst_avi_demux_parse_stream:
1453 * @avi: calling element (used for debugging/errors).
1454 * @buf: input buffer used to parse the stream.
1456 * Parses all subchunks in a strl chunk (which defines a single
1457 * stream). Discards the buffer after use. This function will
1458 * increment the stream counter internally.
1460 * Returns: whether the stream was identified successfully.
1461 * Errors are not fatal. It does indicate the stream
1465 gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf)
1467 avi_stream_context *stream;
1468 GstElementClass *klass;
1469 GstPadTemplate *templ;
1470 GstBuffer *sub = NULL;
1473 gchar *codec_name = NULL, *padname = NULL;
1474 const gchar *tag_name;
1475 GstCaps *caps = NULL;
1477 GstElement *element;
1478 gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE;
1479 gst_riff_vprp *vprp = NULL;
1481 element = GST_ELEMENT_CAST (avi);
1483 GST_DEBUG_OBJECT (avi, "Parsing stream");
1485 if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) {
1486 GST_WARNING_OBJECT (avi,
1487 "maximum no of streams (%d) exceeded, ignoring stream",
1488 GST_AVI_DEMUX_MAX_STREAMS);
1489 gst_buffer_unref (buf);
1490 /* not a fatal error, let's say */
1494 stream = &avi->stream[avi->num_streams];
1496 /* initial settings */
1497 stream->idx_duration = GST_CLOCK_TIME_NONE;
1498 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1499 stream->duration = GST_CLOCK_TIME_NONE;
1501 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
1502 /* sub can be NULL if the chunk is empty */
1504 case GST_RIFF_TAG_strh:
1506 gst_riff_strh *strh;
1509 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1512 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1513 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1516 strh = stream->strh;
1517 /* sanity check; stream header frame rate matches global header
1519 if (stream->strh->type == GST_RIFF_FCC_vids) {
1521 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1523 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1524 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1525 "frame duration = %d ms", strh->rate, strh->scale,
1526 s_dur / GST_MSECOND);
1527 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1528 strh->rate = GST_SECOND / GST_USECOND;
1529 strh->scale = h_dur / GST_USECOND;
1530 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1531 strh->rate, strh->scale);
1534 /* determine duration as indicated by header */
1535 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1536 strh->scale, GST_SECOND, (guint64) strh->rate);
1537 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1538 GST_TIME_ARGS (stream->hdr_duration));
1539 if (stream->hdr_duration == 0)
1540 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1545 case GST_RIFF_TAG_strf:
1547 gboolean res = FALSE;
1550 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
1554 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
1557 switch (stream->strh->type) {
1558 case GST_RIFF_FCC_vids:
1559 stream->is_vbr = TRUE;
1560 res = gst_riff_parse_strf_vids (element, sub,
1561 &stream->strf.vids, &stream->extradata);
1562 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
1564 case GST_RIFF_FCC_auds:
1565 stream->is_vbr = (stream->strh->samplesize == 0)
1566 && stream->strh->scale > 1;
1568 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
1569 &stream->extradata);
1570 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
1571 stream->is_vbr, res);
1573 case GST_RIFF_FCC_iavs:
1574 stream->is_vbr = TRUE;
1575 res = gst_riff_parse_strf_iavs (element, sub,
1576 &stream->strf.iavs, &stream->extradata);
1577 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
1579 case GST_RIFF_FCC_txts:
1580 /* nothing to parse here */
1581 stream->is_vbr = (stream->strh->samplesize == 0)
1582 && (stream->strh->scale > 1);
1586 GST_ERROR_OBJECT (avi,
1587 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
1588 GST_FOURCC_ARGS (stream->strh->type));
1596 case GST_RIFF_TAG_vprp:
1599 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
1603 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
1607 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
1611 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
1612 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
1613 /* not considered fatal */
1620 case GST_RIFF_TAG_strd:
1621 if (stream->initdata)
1622 gst_buffer_unref (stream->initdata);
1623 stream->initdata = sub;
1625 case GST_RIFF_TAG_strn:
1626 g_free (stream->name);
1629 g_strndup ((gchar *) GST_BUFFER_DATA (sub),
1630 (gsize) GST_BUFFER_SIZE (sub));
1631 gst_buffer_unref (sub);
1634 stream->name = g_strdup ("");
1636 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
1639 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
1640 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
1641 '0' + avi->num_streams % 10)) {
1642 g_free (stream->indexes);
1643 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
1644 stream->superindex = TRUE;
1647 GST_WARNING_OBJECT (avi,
1648 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
1649 GST_FOURCC_ARGS (tag));
1651 case GST_RIFF_TAG_JUNK:
1653 gst_buffer_unref (sub);
1661 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
1666 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
1670 /* get class to figure out the template */
1671 klass = GST_ELEMENT_GET_CLASS (avi);
1673 /* we now have all info, let´s set up a pad and a caps and be done */
1674 /* create stream name + pad */
1675 switch (stream->strh->type) {
1676 case GST_RIFF_FCC_vids:{
1679 fourcc = (stream->strf.vids->compression) ?
1680 stream->strf.vids->compression : stream->strh->fcc_handler;
1681 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
1682 templ = gst_element_class_get_pad_template (klass, "video_%02d");
1683 caps = gst_riff_create_video_caps (fourcc, stream->strh,
1684 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
1686 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
1687 GST_TYPE_FOURCC, fourcc, NULL);
1688 } else if (got_vprp && vprp) {
1689 guint32 aspect_n, aspect_d;
1692 aspect_n = vprp->aspect >> 16;
1693 aspect_d = vprp->aspect & 0xffff;
1694 /* calculate the pixel aspect ratio using w/h and aspect ratio */
1695 n = aspect_n * stream->strf.vids->height;
1696 d = aspect_d * stream->strf.vids->width;
1698 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
1700 /* very local, not needed elsewhere */
1704 tag_name = GST_TAG_VIDEO_CODEC;
1705 avi->num_v_streams++;
1708 case GST_RIFF_FCC_auds:{
1709 padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
1710 templ = gst_element_class_get_pad_template (klass, "audio_%02d");
1711 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
1712 stream->strh, stream->strf.auds, stream->extradata,
1713 stream->initdata, &codec_name);
1715 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
1716 G_TYPE_INT, stream->strf.auds->format, NULL);
1718 tag_name = GST_TAG_AUDIO_CODEC;
1719 avi->num_a_streams++;
1722 case GST_RIFF_FCC_iavs:{
1723 guint32 fourcc = stream->strh->fcc_handler;
1725 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
1726 templ = gst_element_class_get_pad_template (klass, "video_%02d");
1727 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
1728 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
1730 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
1731 GST_TYPE_FOURCC, fourcc, NULL);
1733 tag_name = GST_TAG_VIDEO_CODEC;
1734 avi->num_v_streams++;
1737 case GST_RIFF_FCC_txts:{
1738 padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
1739 templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
1740 caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
1742 avi->num_t_streams++;
1746 g_assert_not_reached ();
1749 /* no caps means no stream */
1751 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
1755 GST_DEBUG_OBJECT (element, "codec-name=%s",
1756 (codec_name ? codec_name : "NULL"));
1757 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
1759 /* set proper settings and add it */
1761 gst_object_unref (stream->pad);
1762 pad = stream->pad = gst_pad_new_from_template (templ, padname);
1763 stream->last_flow = GST_FLOW_OK;
1764 stream->discont = TRUE;
1767 gst_pad_use_fixed_caps (pad);
1769 gst_pad_set_formats_function (pad,
1770 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
1771 gst_pad_set_event_mask_function (pad,
1772 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
1774 gst_pad_set_event_function (pad,
1775 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
1776 gst_pad_set_query_type_function (pad,
1777 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
1778 gst_pad_set_query_function (pad,
1779 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
1781 gst_pad_set_convert_function (pad,
1782 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
1785 stream->num = avi->num_streams;
1786 stream->total_bytes = 0;
1787 stream->total_frames = 0;
1788 stream->total_blocks = 0;
1789 stream->current_frame = 0;
1790 stream->current_byte = 0;
1791 gst_pad_set_element_private (pad, stream);
1793 gst_pad_set_caps (pad, caps);
1794 gst_pad_set_active (pad, TRUE);
1795 gst_element_add_pad (GST_ELEMENT (avi), pad);
1796 GST_LOG_OBJECT (element, "Added pad %s with caps %" GST_PTR_FORMAT,
1797 GST_PAD_NAME (pad), caps);
1798 gst_caps_unref (caps);
1802 if (!stream->taglist)
1803 stream->taglist = gst_tag_list_new ();
1805 avi->got_tags = TRUE;
1807 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
1809 g_free (codec_name);
1817 /* unref any mem that may be in use */
1819 gst_buffer_unref (buf);
1821 gst_buffer_unref (sub);
1823 g_free (codec_name);
1824 g_free (stream->strh);
1825 g_free (stream->strf.data);
1826 g_free (stream->name);
1827 g_free (stream->indexes);
1828 if (stream->initdata)
1829 gst_buffer_unref (stream->initdata);
1830 if (stream->extradata)
1831 gst_buffer_unref (stream->extradata);
1832 memset (stream, 0, sizeof (avi_stream_context));
1839 * gst_avi_demux_parse_odml:
1840 * @avi: calling element (used for debug/error).
1841 * @buf: input buffer to be used for parsing.
1843 * Read an openDML-2.0 extension header. Fills in the frame number
1844 * in the avi demuxer object when reading succeeds.
1847 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
1851 GstBuffer *sub = NULL;
1853 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
1856 case GST_RIFF_TAG_dmlh:{
1857 gst_riff_dmlh dmlh, *_dmlh;
1860 /* sub == NULL is possible and means an empty buffer */
1861 size = sub ? GST_BUFFER_SIZE (sub) : 0;
1864 if (size < sizeof (gst_riff_dmlh)) {
1865 GST_ERROR_OBJECT (avi,
1866 "DMLH entry is too small (%d bytes, %d needed)",
1867 size, (int) sizeof (gst_riff_dmlh));
1870 _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
1871 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
1873 GST_INFO_OBJECT (avi, "dmlh tag found:");
1874 GST_INFO_OBJECT (avi, " totalframes: %u", dmlh.totalframes);
1876 avi->avih->tot_frames = dmlh.totalframes;
1881 GST_WARNING_OBJECT (avi,
1882 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
1883 GST_FOURCC_ARGS (tag));
1885 case GST_RIFF_TAG_JUNK:
1887 /* skip and move to next chunk */
1889 gst_buffer_unref (sub);
1896 gst_buffer_unref (buf);
1900 * Sort helper for index entries that sorts by index time.
1901 * If times are equal we sort by stream number.
1904 sort (gst_avi_index_entry * a, gst_avi_index_entry * b)
1908 else if (a->ts < b->ts)
1911 return a->stream_nr - b->stream_nr;
1915 * gst_avi_demux_parse_index:
1916 * @avi: calling element (used for debugging/errors).
1917 * @buf: buffer containing the full index.
1918 * @entries_list: list (returned by this function) containing the index
1919 * entries parsed from the buffer. The first in the list
1920 * is also a pointer to the allocated data and should be
1921 * free'ed at some point.
1923 * Read index entries from the provided buffer. Takes ownership of @buf.
1926 gst_avi_demux_parse_index (GstAviDemux * avi,
1927 GstBuffer * buf, GList ** _entries_list)
1929 guint64 pos_before = avi->offset;
1930 gst_avi_index_entry *entries = NULL;
1932 GList *entries_list = NULL;
1935 #ifndef GST_DISABLE_GST_DEBUG
1936 gulong _nr_keyframes = 0;
1939 if (!buf || !GST_BUFFER_SIZE (buf)) {
1940 *_entries_list = NULL;
1941 GST_DEBUG ("empty index");
1943 gst_buffer_unref (buf);
1947 data = GST_BUFFER_DATA (buf);
1948 num = GST_BUFFER_SIZE (buf) / sizeof (gst_riff_index_entry);
1949 if (!(entries = g_try_new (gst_avi_index_entry, num)))
1952 GST_INFO ("Parsing index, nr_entries = %6d", num);
1954 for (i = 0, n = 0; i < num; i++) {
1956 gst_riff_index_entry entry, *_entry;
1957 avi_stream_context *stream;
1959 gst_avi_index_entry *target;
1961 _entry = &((gst_riff_index_entry *) data)[i];
1962 entry.id = GST_READ_UINT32_LE (&_entry->id);
1963 entry.offset = GST_READ_UINT32_LE (&_entry->offset);
1964 entry.flags = GST_READ_UINT32_LE (&_entry->flags);
1965 entry.size = GST_READ_UINT32_LE (&_entry->size);
1966 target = &entries[n];
1968 if (entry.id == GST_RIFF_rec || entry.id == 0 ||
1969 (entry.offset == 0 && n > 0))
1972 stream_nr = CHUNKID_TO_STREAMNR (entry.id);
1973 if (stream_nr >= avi->num_streams) {
1974 GST_WARNING_OBJECT (avi,
1975 "Index entry %d has invalid stream nr %d", i, stream_nr);
1978 target->stream_nr = stream_nr;
1979 stream = &avi->stream[stream_nr];
1981 if (!stream->strh) {
1982 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
1986 target->index_nr = i;
1988 (entry.flags & GST_RIFF_IF_KEYFRAME) ? GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME
1990 target->size = entry.size;
1991 target->offset = entry.offset + 8;
1993 /* figure out if the index is 0 based or relative to the MOVI start */
1995 if (target->offset < pos_before)
1996 avi->index_offset = pos_before + 8;
1998 avi->index_offset = 0;
1999 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2002 if (stream->strh->type == GST_RIFF_FCC_auds) {
2003 /* all audio frames are keyframes */
2004 target->flags |= GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
2006 #ifndef GST_DISABLE_GST_DEBUG
2007 if (target->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
2011 /* stream duration unknown, now we can calculate it */
2012 if (stream->idx_duration == -1)
2013 stream->idx_duration = 0;
2016 target->ts = stream->idx_duration;
2017 if (stream->is_vbr) {
2018 /* VBR stream next timestamp */
2019 if (stream->strh->type == GST_RIFF_FCC_auds) {
2020 next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
2021 stream->total_blocks + 1);
2023 next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
2024 stream->total_frames + 1);
2027 /* constant rate stream */
2028 next_ts = avi_stream_convert_bytes_to_time_unchecked (stream,
2029 stream->total_bytes + target->size);
2031 /* duration is next - current */
2032 target->dur = next_ts - target->ts;
2034 /* stream position */
2035 target->bytes_before = stream->total_bytes;
2036 target->frames_before = stream->total_frames;
2038 stream->total_bytes += target->size;
2039 stream->total_frames++;
2040 if (stream->strh->type == GST_RIFF_FCC_auds) {
2041 if (stream->strf.auds->blockalign > 0)
2042 stream->total_blocks +=
2043 (target->size + stream->strf.auds->blockalign -
2044 1) / stream->strf.auds->blockalign;
2046 stream->total_blocks++;
2048 stream->idx_duration = next_ts;
2050 GST_LOG_OBJECT (avi,
2051 "Adding index entry %d (%6u), flags %02x, stream %d, size %u "
2052 ", offset %" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT ", dur %"
2054 target->index_nr, stream->total_frames - 1, target->flags,
2055 target->stream_nr, target->size, target->offset,
2056 GST_TIME_ARGS (target->ts), GST_TIME_ARGS (target->dur));
2057 entries_list = g_list_prepend (entries_list, target);
2062 GST_INFO ("Parsed index, %6d entries, %5ld keyframes, entry size = %2d, "
2063 "total size = %10d", num, _nr_keyframes,
2064 (gint) sizeof (gst_avi_index_entry),
2065 (gint) (num * sizeof (gst_avi_index_entry)));
2067 gst_buffer_unref (buf);
2070 *_entries_list = g_list_reverse (entries_list);
2079 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2080 ("Cannot allocate memory for %u*%u=%u bytes",
2081 (guint) sizeof (gst_avi_index_entry), num,
2082 (guint) sizeof (gst_avi_index_entry) * num));
2083 gst_buffer_unref (buf);
2088 * gst_avi_demux_stream_index:
2089 * @avi: avi demuxer object.
2090 * @index: list of index entries, returned by this function.
2091 * @alloc_list: list of allocated data, returned by this function.
2093 * Seeks to index and reads it.
2096 gst_avi_demux_stream_index (GstAviDemux * avi,
2097 GList ** index, GList ** alloc_list)
2100 guint64 offset = avi->offset;
2106 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2111 /* get chunk information */
2112 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2113 if (res != GST_FLOW_OK)
2115 else if (GST_BUFFER_SIZE (buf) < 8)
2118 /* check tag first before blindy trying to read 'size' bytes */
2119 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2120 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2121 if (tag == GST_RIFF_TAG_LIST) {
2122 /* this is the movi tag */
2123 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2124 (8 + ((size + 1) & ~1)));
2125 offset += 8 + ((size + 1) & ~1);
2126 gst_buffer_unref (buf);
2127 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2128 if (res != GST_FLOW_OK)
2130 else if (GST_BUFFER_SIZE (buf) < 8)
2132 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2133 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2136 if (tag != GST_RIFF_TAG_idx1)
2141 gst_buffer_unref (buf);
2143 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2145 /* read chunk, advance offset */
2146 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2147 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2150 GST_INFO ("will parse index chunk size %u for tag %"
2151 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2153 gst_avi_demux_parse_index (avi, buf, index);
2155 *alloc_list = g_list_append (*alloc_list, (*index)->data);
2157 /* debug our indexes */
2158 for (i = 0; i < avi->num_streams; i++) {
2159 avi_stream_context *stream;
2161 stream = &avi->stream[i];
2162 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2163 i, stream->total_frames, stream->total_bytes);
2170 GST_DEBUG_OBJECT (avi,
2171 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2176 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2177 gst_buffer_unref (buf);
2182 GST_WARNING_OBJECT (avi,
2183 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2184 GST_FOURCC_ARGS (tag));
2185 gst_buffer_unref (buf);
2190 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2191 gst_buffer_unref (buf);
2198 * Sync to next data chunk.
2201 gst_avi_demux_skip (GstAviDemux * avi, gboolean prevent_eos)
2203 GstRiffRead *riff = GST_RIFF_READ (avi);
2206 guint64 pos, length;
2210 pos = gst_bytestream_tell (riff->bs);
2211 length = gst_bytestream_length (riff->bs);
2213 if (pos + 8 > length)
2216 if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
2219 size = GST_READ_UINT32_LE (&data[4]);
2223 /* Note, we're going to skip which might involve seeks. Therefore,
2224 * we need 1 byte more! */
2225 if (pos + 8 + size >= length)
2229 return gst_riff_read_skip (riff);
2233 gst_avi_demux_sync (GstAviDemux * avi, guint32 * ret_tag, gboolean prevent_eos)
2235 GstRiffRead *riff = GST_RIFF_READ (avi);
2237 guint64 length = gst_bytestream_length (riff->bs);
2239 if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
2242 /* peek first (for the end of this 'list/movi' section) */
2243 if (!(tag = gst_riff_peek_tag (riff, &avi->level_up)))
2246 /* if we're at top-level, we didn't read the 'movi'
2247 * list tag yet. This can also be 'AVIX' in case of
2248 * openDML-2.0 AVI files. Lastly, it might be idx1,
2249 * in which case we skip it so we come at EOS. */
2251 if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
2254 if (!(tag = gst_riff_peek_tag (riff, NULL)))
2258 case GST_RIFF_TAG_LIST:
2259 if (!(tag = gst_riff_peek_list (riff)))
2263 case GST_RIFF_LIST_AVIX:
2264 if (!gst_riff_read_list (riff, &tag))
2268 case GST_RIFF_LIST_movi:
2269 if (!gst_riff_read_list (riff, &tag))
2277 GST_WARNING ("Unknown list %" GST_FOURCC_FORMAT " before AVI data",
2278 GST_FOURCC_ARGS (tag));
2281 case GST_RIFF_TAG_JUNK:
2282 if (!gst_avi_demux_skip (avi, prevent_eos))
2289 if ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
2290 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9') {
2295 case GST_RIFF_TAG_idx1:
2296 case GST_RIFF_TAG_JUNK:
2297 if (!gst_avi_demux_skip (avi, prevent_eos)) {
2304 /* And then, we get the data */
2305 if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
2308 if (!(tag = gst_riff_peek_tag (riff, NULL)))
2311 /* Support for rec-list files */
2313 case GST_RIFF_TAG_LIST:
2314 if (!(tag = gst_riff_peek_list (riff)))
2316 if (tag == GST_RIFF_rec) {
2317 /* Simply skip the list */
2318 if (!gst_riff_read_list (riff, &tag))
2320 if (!(tag = gst_riff_peek_tag (riff, NULL)))
2325 case GST_RIFF_TAG_JUNK:
2326 gst_avi_demux_skip (avi, prevent_eos);
2338 * gst_avi_demux_peek_tag:
2340 * Returns the tag and size of the next chunk
2342 static GstFlowReturn
2343 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2346 GstFlowReturn res = GST_FLOW_OK;
2347 GstBuffer *buf = NULL;
2350 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2351 if (res != GST_FLOW_OK)
2354 bufsize = GST_BUFFER_SIZE (buf);
2358 *tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2359 *size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2361 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2362 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2363 *size, offset + 8, offset + 8 + (gint64) * size);
2365 gst_buffer_unref (buf);
2372 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2377 GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
2378 res = GST_FLOW_ERROR;
2384 * gst_avi_demux_next_data_buffer:
2386 * Returns the offset and size of the next buffer
2387 * Position is the position of the buffer (after tag and size)
2389 static GstFlowReturn
2390 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2391 guint32 * tag, guint * size)
2393 guint64 off = *offset;
2398 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2399 if (res != GST_FLOW_OK)
2401 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2402 off += 8 + 4; /* skip tag + size + subtag */
2414 * gst_avi_demux_stream_scan:
2415 * @avi: calling element (used for debugging/errors).
2416 * @index: list of index entries, returned by this function.
2417 * @alloc_list: list of allocated data, returned by this function.
2419 * Scan the file for all chunks to "create" a new index.
2420 * Return value indicates if we can continue reading the stream. It
2421 * does not say anything about whether we created an index.
2426 gst_avi_demux_stream_scan (GstAviDemux * avi,
2427 GList ** index, GList ** alloc_list)
2430 gst_avi_index_entry *entry, *entries = NULL;
2431 avi_stream_context *stream;
2433 guint64 pos = avi->offset;
2438 guint index_size = 0;
2441 * - implement non-seekable source support.
2443 GST_DEBUG_OBJECT (avi,
2444 "Creating index %s existing index, starting at offset %" G_GUINT64_FORMAT,
2445 ((*index) ? "with" : "without"), pos);
2447 format = GST_FORMAT_BYTES;
2448 if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
2454 entry = g_list_last (*index)->data;
2455 pos = entry->offset + avi->index_offset + entry->size;
2456 if (entry->size & 1)
2459 if (pos >= length) {
2460 GST_LOG_OBJECT (avi, "Complete index, we're done");
2464 GST_LOG_OBJECT (avi, "Incomplete index, seeking to last valid entry @ %"
2465 G_GUINT64_FORMAT " of %" G_GUINT64_FORMAT " (%"
2466 G_GUINT64_FORMAT "+%u)", pos, length, entry->offset, entry->size);
2473 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2474 if (G_UNLIKELY (res != GST_FLOW_OK))
2477 /* check valid stream */
2478 stream_nr = CHUNKID_TO_STREAMNR (tag);
2479 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2480 GST_WARNING_OBJECT (avi,
2481 "Index entry has invalid stream nr %d", stream_nr);
2485 stream = &avi->stream[stream_nr];
2486 if (G_UNLIKELY (stream->pad == NULL)) {
2487 GST_WARNING_OBJECT (avi,
2488 "Stream %d does not have an output pad, can't create new index",
2494 if (G_UNLIKELY (index_size % 1024 == 0)) {
2495 entries = g_new (gst_avi_index_entry, 1024);
2496 *alloc_list = g_list_prepend (*alloc_list, entries);
2498 entry = &entries[index_size % 1024];
2500 entry->index_nr = index_size++;
2501 entry->stream_nr = stream_nr;
2502 entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
2503 entry->offset = pos - avi->index_offset;
2506 /* timestamps, get timestamps of two consecutive frames to calculate
2507 * timestamp and duration. */
2508 format = GST_FORMAT_TIME;
2509 if (stream->is_vbr) {
2511 entry->ts = avi_stream_convert_frames_to_time_unchecked (stream,
2512 stream->total_frames);
2513 entry->dur = avi_stream_convert_frames_to_time_unchecked (stream,
2514 stream->total_frames + 1);
2516 /* constant rate stream */
2517 entry->ts = avi_stream_convert_bytes_to_time_unchecked (stream,
2518 stream->total_bytes);
2519 entry->dur = avi_stream_convert_bytes_to_time_unchecked (stream,
2520 stream->total_bytes + entry->size);
2522 entry->dur -= entry->ts;
2524 /* stream position */
2525 entry->bytes_before = stream->total_bytes;
2526 stream->total_bytes += entry->size;
2527 entry->frames_before = stream->total_frames;
2528 stream->total_frames++;
2529 stream->idx_duration = entry->ts + entry->dur;
2531 list = g_list_prepend (list, entry);
2532 GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
2533 G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
2534 index_size - 1, entry->frames_before, entry->offset,
2535 GST_TIME_ARGS (entry->ts), entry->stream_nr);
2538 /* update position */
2539 pos += GST_ROUND_UP_2 (size);
2540 if (G_UNLIKELY (pos > length)) {
2541 GST_WARNING_OBJECT (avi,
2542 "Stopping index lookup since we are further than EOF");
2547 /* FIXME: why is this disabled */
2549 while (gst_avi_demux_sync (avi, &tag, TRUE)) {
2550 guint stream_nr = CHUNKID_TO_STREAMNR (tag);
2552 GstFormat format = GST_FORMAT_TIME;
2554 if (stream_nr >= avi->num_streams)
2556 stream = &avi->stream[stream_nr];
2558 /* get chunk size */
2559 if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
2563 entry->index_nr = index_size++;
2564 entry->stream_nr = stream_nr;
2565 entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
2566 entry->offset = gst_bytestream_tell (riff->bs) + 8 - avi->index_offset;
2567 entry->size = GST_READ_UINT32_LE (&data[4]);
2570 if (stream->is_vbr) {
2572 entry->ts = avi_stream_convert_frames_to_time_unchecked (stream,
2573 stream->total_frames);
2574 entry->dur = avi_stream_convert_frames_to_time_unchecked (stream,
2575 stream->total_frames + 1);
2577 /* constant rate stream */
2578 entry->ts = avi_stream_convert_bytes_to_time_unchecked (stream,
2579 stream->total_bytes);
2580 entry->dur = avi_stream_convert_bytes_to_time_unchecked (stream,
2581 stream->total_bytes + entry->size);
2583 entry->dur -= entry->ts;
2585 /* stream position */
2586 entry->bytes_before = stream->total_bytes;
2587 stream->total_bytes += entry->size;
2588 entry->frames_before = stream->total_frames;
2589 stream->total_frames++;
2591 list = g_list_prepend (list, entry);
2592 GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
2593 G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
2594 index_size - 1, entry->frames_before, entry->offset,
2595 GST_TIME_ARGS (entry->ts), entry->stream_nr);
2598 if (!gst_avi_demux_skip (avi, TRUE))
2602 if (!(event = gst_riff_read_seek (riff, pos))) {
2606 gst_event_unref (event);
2610 GST_DEBUG_OBJECT (avi, "index created, %d items", index_size);
2612 *index = g_list_concat (*index, g_list_reverse (list));
2618 * gst_avi_demux_massage_index:
2619 * @avi: calling element (used for debugging/errors).
2621 * We're going to go over each entry in the index and finetune
2622 * some things we don't like about AVI. For example, a single
2623 * chunk might be too long. Also, individual streams might be
2624 * out-of-sync. In the first case, we cut the chunk in several
2625 * smaller pieces. In the second case, we re-order chunk reading
2626 * order. The end result should be a smoother playing AVI.
2629 gst_avi_demux_massage_index (GstAviDemux * avi,
2630 GList * list, GList * alloc_list)
2632 gst_avi_index_entry *entry;
2633 avi_stream_context *stream;
2636 gint64 delay = G_GINT64_CONSTANT (0);
2638 GST_LOG_OBJECT (avi, "Starting index massage, nr_entries = %d",
2639 list ? g_list_length (list) : 0);
2642 #ifndef GST_DISABLE_GST_DEBUG
2643 guint num_added_total = 0;
2644 guint num_per_stream[GST_AVI_DEMUX_MAX_STREAMS] = { 0, };
2646 GST_LOG_OBJECT (avi,
2647 "I'm now going to cut large chunks into smaller pieces");
2649 /* cut chunks in small (seekable) pieces
2650 * FIXME: this should be a property where a value of
2651 * GST_CLOCK_TIME_NONE would disable the chunking
2653 #define MAX_DURATION (GST_SECOND / 2)
2654 for (i = 0; i < avi->num_streams; i++) {
2655 /* only chop streams that have exactly *one* chunk */
2656 if (avi->stream[i].total_frames != 1)
2659 for (node = list; node != NULL; node = node->next) {
2662 if (entry->stream_nr != i)
2665 /* check for max duration of a single buffer. I suppose that
2666 * the allocation of index entries could be improved. */
2667 stream = &avi->stream[entry->stream_nr];
2668 if (entry->dur > MAX_DURATION
2669 && stream->strh->type == GST_RIFF_FCC_auds) {
2671 gst_avi_index_entry *entries;
2672 guint old_size, num_added;
2675 /* cut in 1/10th of a second */
2676 ideal_size = stream->strf.auds->av_bps / 10;
2678 /* ensure chunk size is multiple of blockalign */
2679 if (stream->strf.auds->blockalign > 1)
2680 ideal_size -= ideal_size % stream->strf.auds->blockalign;
2683 old_size = entry->size;
2684 num_added = (entry->size - 1) / ideal_size;
2685 avi->index_size += num_added;
2686 entries = g_malloc (sizeof (gst_avi_index_entry) * num_added);
2687 alloc_list = g_list_prepend (alloc_list, entries);
2688 for (node2 = node->next; node2 != NULL; node2 = node2->next) {
2689 gst_avi_index_entry *entry2 = node2->data;
2691 entry2->index_nr += num_added;
2692 if (entry2->stream_nr == entry->stream_nr)
2693 entry2->frames_before += num_added;
2696 /* new sized index chunks */
2697 for (i = 0; i < num_added + 1; i++) {
2698 gst_avi_index_entry *entry2;
2703 entry2 = &entries[i - 1];
2704 list = g_list_insert_before (list, node->next, entry2);
2707 memcpy (entry2, entry, sizeof (gst_avi_index_entry));
2710 if (old_size >= ideal_size) {
2711 entry2->size = ideal_size;
2712 old_size -= ideal_size;
2714 entry2->size = old_size;
2717 entry2->dur = GST_SECOND * entry2->size / stream->strf.auds->av_bps;
2720 entry2->ts += entry->dur;
2721 entry2->offset += entry->size;
2722 entry2->bytes_before += entry->size;
2723 entry2->frames_before++;
2726 #ifndef GST_DISABLE_GST_DEBUG
2727 num_added_total += num_added;
2732 #ifndef GST_DISABLE_GST_DEBUG
2733 if (num_added_total)
2734 GST_LOG ("added %u new index entries", num_added_total);
2737 GST_LOG_OBJECT (avi, "I'm now going to reorder the index entries for time");
2739 /* re-order for time */
2740 list = g_list_sort (list, (GCompareFunc) sort);
2742 /* make a continous array out of the list */
2743 avi->index_size = g_list_length (list);
2744 avi->index_entries = g_try_new (gst_avi_index_entry, avi->index_size);
2745 if (!avi->index_entries)
2748 entry = (gst_avi_index_entry *) (list->data);
2751 GST_LOG_OBJECT (avi,
2752 "Building index array, nr_entries = %d (time offset = %"
2753 GST_TIME_FORMAT, avi->index_size, GST_TIME_ARGS (delay));
2755 for (i = 0, node = list; node != NULL; node = node->next, i++) {
2757 entry->index_nr = i;
2759 memcpy (&avi->index_entries[i], entry, sizeof (gst_avi_index_entry));
2760 #ifndef GST_DISABLE_GST_DEBUG
2761 num_per_stream[entry->stream_nr]++;
2764 GST_LOG_OBJECT (avi, "Sorted index entry %3d for stream %d of size %6u"
2765 " at offset %7" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT
2766 " dur %" GST_TIME_FORMAT,
2767 avi->index_entries[i].index_nr, entry->stream_nr, entry->size,
2768 entry->offset, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur));
2771 for (i = 0; i < avi->num_streams; i++) {
2772 stream = &avi->stream[i];
2773 stream->idx_duration -= delay;
2776 #ifndef GST_DISABLE_GST_DEBUG
2778 gchar str[GST_AVI_DEMUX_MAX_STREAMS * (1 + 6 + 2)];
2781 for (i = 0; i < avi->num_streams; i++) {
2782 if (!avi->stream[i].pad)
2784 pad_name = GST_OBJECT_NAME (avi->stream[i].pad);
2785 sprintf (&str[i * (1 + 6 + 2)], " %6u %c", num_per_stream[i],
2788 GST_LOG_OBJECT (avi, "indizies per stream:%20s", str);
2792 GST_LOG_OBJECT (avi, "Freeing original index list");
2793 /* all the node->data in list point to alloc_list chunks */
2798 g_list_foreach (alloc_list, (GFunc) g_free, NULL);
2799 g_list_free (alloc_list);
2801 #ifndef GST_DISABLE_GST_DEBUG
2802 for (i = 0; i < avi->num_streams; i++) {
2803 GST_LOG_OBJECT (avi, "Stream %d, %d frames, %8" G_GUINT64_FORMAT " bytes",
2804 i, avi->stream[i].total_frames, avi->stream[i].total_bytes);
2808 GST_LOG_OBJECT (avi, "Index massaging done");
2813 GST_WARNING_OBJECT (avi, "Out of memory for %" G_GSIZE_FORMAT " bytes",
2814 sizeof (gst_avi_index_entry) * avi->index_size);
2819 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
2824 total = GST_CLOCK_TIME_NONE;
2826 /* all streams start at a timestamp 0 */
2827 for (stream = 0; stream < avi->num_streams; stream++) {
2828 GstClockTime duration, hduration;
2829 avi_stream_context *streamc = &avi->stream[stream];
2830 gst_riff_strh *strh = streamc->strh;
2835 /* get header duration for the stream */
2836 hduration = streamc->hdr_duration;
2838 /* index duration calculated during parsing, invariant under massage */
2839 duration = streamc->idx_duration;
2841 /* now pick a good duration */
2842 if (GST_CLOCK_TIME_IS_VALID (duration)) {
2843 /* index gave valid duration, use that */
2844 GST_INFO ("Stream %d duration according to index: %" GST_TIME_FORMAT,
2845 stream, GST_TIME_ARGS (duration));
2847 /* fall back to header info to calculate a duration */
2848 duration = hduration;
2850 /* set duration for the stream */
2851 streamc->duration = duration;
2853 /* find total duration */
2854 if (total == GST_CLOCK_TIME_NONE || duration > total)
2858 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
2859 /* now update the duration for those streams where we had none */
2860 for (stream = 0; stream < avi->num_streams; stream++) {
2861 avi_stream_context *streamc = &avi->stream[stream];
2863 if (!GST_CLOCK_TIME_IS_VALID (streamc->duration)
2864 || streamc->duration == 0) {
2865 streamc->duration = total;
2867 GST_INFO ("Stream %d duration according to total: %" GST_TIME_FORMAT,
2868 stream, GST_TIME_ARGS (total));
2873 /* and set the total duration in the segment. */
2874 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
2875 GST_TIME_ARGS (total));
2877 gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
2881 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
2883 gboolean result = FALSE;
2886 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
2887 GST_EVENT_TYPE_NAME (event), avi->num_streams);
2889 if (avi->num_streams) {
2890 for (i = 0; i < avi->num_streams; i++) {
2891 avi_stream_context *stream = &avi->stream[i];
2894 if (gst_pad_push_event (stream->pad, gst_event_ref (event)))
2899 gst_event_unref (event);
2904 * Read AVI headers when streaming
2906 static GstFlowReturn
2907 gst_avi_demux_stream_header_push (GstAviDemux * avi)
2909 GstFlowReturn ret = GST_FLOW_OK;
2914 GstBuffer *buf = NULL, *sub = NULL;
2918 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
2920 switch (avi->header_state) {
2921 case GST_AVI_DEMUX_HEADER_TAG_LIST:
2922 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
2923 avi->offset += 8 + ((size + 1) & ~1);
2924 if (tag != GST_RIFF_TAG_LIST)
2925 goto header_no_list;
2927 gst_adapter_flush (avi->adapter, 8);
2928 /* Find the 'hdrl' LIST tag */
2929 GST_DEBUG ("Reading %d bytes", size);
2930 buf = gst_adapter_take_buffer (avi->adapter, size);
2932 if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
2933 goto header_no_hdrl;
2935 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
2937 /* the hdrl starts with a 'avih' header */
2938 if (!gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag, &sub))
2939 goto header_no_avih;
2941 if (tag != GST_RIFF_TAG_avih)
2942 goto header_no_avih;
2944 if (!gst_avi_demux_parse_avih (GST_ELEMENT (avi), sub, &avi->avih))
2945 goto header_wrong_avih;
2947 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
2949 /* now, read the elements from the header until the end */
2950 while (gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag,
2952 /* sub can be NULL on empty tags */
2957 case GST_RIFF_TAG_LIST:
2958 if (GST_BUFFER_SIZE (sub) < 4)
2961 switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
2962 case GST_RIFF_LIST_strl:
2963 if (!(gst_avi_demux_parse_stream (avi, sub))) {
2964 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
2965 ("failed to parse stream, ignoring"));
2969 case GST_RIFF_LIST_odml:
2970 gst_avi_demux_parse_odml (avi, sub);
2973 GST_WARNING_OBJECT (avi,
2974 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
2975 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
2978 case GST_RIFF_TAG_JUNK:
2983 GST_WARNING_OBJECT (avi,
2984 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
2985 offset, GST_FOURCC_ARGS (tag));
2987 case GST_RIFF_TAG_JUNK:
2989 /* move to next chunk */
2990 gst_buffer_unref (sub);
2995 gst_buffer_unref (buf);
2996 GST_DEBUG ("elements parsed");
2998 /* check parsed streams */
2999 if (avi->num_streams == 0) {
3001 } else if (avi->num_streams != avi->avih->streams) {
3002 GST_WARNING_OBJECT (avi,
3003 "Stream header mentioned %d streams, but %d available",
3004 avi->avih->streams, avi->num_streams);
3006 GST_DEBUG ("Get junk and info next");
3007 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
3009 /* Need more data */
3013 case GST_AVI_DEMUX_HEADER_INFO:
3014 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
3016 if (gst_adapter_available (avi->adapter) < 12)
3019 data = gst_adapter_peek (avi->adapter, 12);
3020 tag = GST_READ_UINT32_LE (data);
3021 size = GST_READ_UINT32_LE (data + 4);
3022 ltag = GST_READ_UINT32_LE (data + 8);
3024 if (tag == GST_RIFF_TAG_LIST) {
3026 case GST_RIFF_LIST_movi:
3027 gst_adapter_flush (avi->adapter, 12);
3030 case GST_RIFF_LIST_INFO:
3031 GST_DEBUG ("Found INFO chunk");
3032 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3033 GST_DEBUG ("got size %d", size);
3035 gst_adapter_flush (avi->adapter, 12);
3037 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
3038 gst_riff_parse_info (GST_ELEMENT (avi), buf,
3040 gst_buffer_unref (buf);
3042 avi->offset += ((size + 1) & ~1) - 4;
3044 GST_DEBUG ("skipping INFO LIST prefix");
3047 /* Need more data */
3052 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3053 avi->offset += 8 + ((size + 1) & ~1);
3054 gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
3055 // ??? goto iterate; ???
3057 /* Need more data */
3063 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3064 avi->offset += 8 + ((size + 1) & ~1);
3065 gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
3068 /* Need more data */
3075 GST_WARNING ("unhandled header state: %d", avi->header_state);
3080 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3081 avi->num_streams, avi->stream[0].indexes);
3083 GST_DEBUG ("Found movi chunk. Starting to stream data");
3084 avi->state = GST_AVI_DEMUX_MOVI;
3087 /*GList *index = NULL, *alloc = NULL; */
3089 /* ######################## this need to be integrated with the state */
3090 /* create or read stream index (for seeking) */
3091 if (avi->stream[0].indexes != NULL) {
3092 gst_avi_demux_read_subindexes_push (avi, &index, &alloc);
3095 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
3096 gst_avi_demux_stream_index (avi, &index, &alloc);
3098 /* some indexes are incomplete, continue streaming from there */
3100 gst_avi_demux_stream_scan (avi, &index, &alloc);
3103 /* this is a fatal error */
3107 if (!gst_avi_demux_massage_index (avi, index, alloc))
3110 gst_avi_demux_calculate_durations_from_index (avi);
3111 /* ######################## */
3114 /* create initial NEWSEGMENT event */
3115 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3116 stop = avi->segment.duration;
3118 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3120 if (avi->seek_event)
3121 gst_event_unref (avi->seek_event);
3122 avi->seek_event = gst_event_new_new_segment
3123 (FALSE, avi->segment.rate, GST_FORMAT_TIME,
3124 avi->segment.start, stop, avi->segment.start);
3126 /* at this point we know all the streams and we can signal the no more
3128 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3129 gst_element_no_more_pads (GST_ELEMENT (avi));
3136 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3137 return GST_FLOW_ERROR;
3141 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3142 ("Invalid AVI header (no LIST at start): %"
3143 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3144 return GST_FLOW_ERROR;
3148 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3149 ("Invalid AVI header (no hdrl at start): %"
3150 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3151 gst_buffer_unref (buf);
3152 return GST_FLOW_ERROR;
3156 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3157 ("Invalid AVI header (no avih at start): %"
3158 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3160 gst_buffer_unref (sub);
3162 gst_buffer_unref (buf);
3163 return GST_FLOW_ERROR;
3167 gst_buffer_unref (buf);
3168 return GST_FLOW_ERROR;
3173 * Read full AVI headers.
3175 static GstFlowReturn
3176 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3179 GstBuffer *buf, *sub = NULL;
3181 GList *index = NULL, *alloc = NULL;
3184 GstElement *element = GST_ELEMENT_CAST (avi);
3186 /* the header consists of a 'hdrl' LIST tag */
3187 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3188 if (res != GST_FLOW_OK)
3189 goto pull_range_failed;
3190 else if (tag != GST_RIFF_TAG_LIST)
3192 else if (GST_BUFFER_SIZE (buf) < 4)
3195 GST_DEBUG_OBJECT (avi, "parsing headers");
3197 /* Find the 'hdrl' LIST tag */
3198 while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
3199 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3200 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
3203 gst_buffer_unref (buf);
3205 /* read new chunk */
3206 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3207 if (res != GST_FLOW_OK)
3208 goto pull_range_failed;
3209 else if (tag != GST_RIFF_TAG_LIST)
3211 else if (GST_BUFFER_SIZE (buf) < 4)
3215 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3217 /* the hdrl starts with a 'avih' header */
3218 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3220 else if (tag != GST_RIFF_TAG_avih)
3222 else if (!gst_avi_demux_parse_avih (element, sub, &avi->avih))
3225 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3227 /* now, read the elements from the header until the end */
3228 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3229 /* sub can be NULL on empty tags */
3234 case GST_RIFF_TAG_LIST:
3239 if (GST_BUFFER_SIZE (sub) < 4)
3242 data = GST_BUFFER_DATA (sub);
3243 fourcc = GST_READ_UINT32_LE (data);
3246 case GST_RIFF_LIST_strl:
3247 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3248 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3249 ("faile to parse stream, ignoring"));
3253 case GST_RIFF_LIST_odml:
3254 gst_avi_demux_parse_odml (avi, sub);
3257 GST_WARNING_OBJECT (avi,
3258 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3259 GST_FOURCC_ARGS (fourcc));
3260 GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
3261 GST_BUFFER_SIZE (sub));
3263 case GST_RIFF_TAG_JUNK:
3269 GST_WARNING_OBJECT (avi,
3270 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3271 GST_FOURCC_ARGS (tag), offset);
3272 GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
3273 GST_BUFFER_SIZE (sub));
3275 case GST_RIFF_TAG_JUNK:
3278 gst_buffer_unref (sub);
3283 gst_buffer_unref (buf);
3284 GST_DEBUG ("elements parsed");
3286 /* check parsed streams */
3287 if (avi->num_streams == 0)
3289 else if (avi->num_streams != avi->avih->streams) {
3290 GST_WARNING_OBJECT (avi,
3291 "Stream header mentioned %d streams, but %d available",
3292 avi->avih->streams, avi->num_streams);
3295 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3296 G_GUINT64_FORMAT, avi->offset);
3298 /* Now, find the data (i.e. skip all junk between header and data) */
3303 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3304 if (res != GST_FLOW_OK) {
3305 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3306 goto pull_range_failed;
3307 } else if (GST_BUFFER_SIZE (buf) < 12) {
3308 GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
3309 GST_BUFFER_SIZE (buf));
3310 gst_buffer_unref (buf);
3311 return GST_FLOW_ERROR;
3314 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
3315 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
3316 ltag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 8);
3318 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3319 GST_FOURCC_ARGS (tag), size);
3320 GST_MEMDUMP ("Tag content", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
3321 gst_buffer_unref (buf);
3324 case GST_RIFF_TAG_LIST:{
3326 case GST_RIFF_LIST_movi:
3327 GST_DEBUG_OBJECT (avi,
3328 "Reached the 'movi' tag, we're done with skipping");
3330 case GST_RIFF_LIST_INFO:
3332 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3334 if (res != GST_FLOW_OK) {
3335 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3336 goto pull_range_failed;
3338 GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
3340 GST_DEBUG ("skipping INFO LIST prefix");
3341 avi->offset += (4 - GST_ROUND_UP_2 (size));
3342 gst_buffer_unref (buf);
3346 sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
3347 gst_riff_parse_info (element, sub, &avi->globaltags);
3349 gst_buffer_unref (sub);
3352 gst_buffer_unref (buf);
3353 /* gst_riff_read_chunk() has already advanced avi->offset */
3356 GST_WARNING_OBJECT (avi,
3357 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3358 GST_FOURCC_ARGS (ltag));
3359 avi->offset += 8 + ((size + 1) & ~1);
3365 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3366 GST_FOURCC_ARGS (tag));
3368 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3369 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3370 avi->offset += 8 + ((size + 1) & ~1);
3376 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3377 avi->num_streams, avi->stream[0].indexes);
3379 /* create or read stream index (for seeking) */
3380 if (avi->stream[0].indexes != NULL) {
3381 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3382 gst_avi_demux_read_subindexes_pull (avi, &index, &alloc);
3385 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
3386 gst_avi_demux_stream_index (avi, &index, &alloc);
3388 /* some indexes are incomplete, continue streaming from there */
3390 gst_avi_demux_stream_scan (avi, &index, &alloc);
3393 /* this is a fatal error */
3397 if (!gst_avi_demux_massage_index (avi, index, alloc))
3400 gst_avi_demux_calculate_durations_from_index (avi);
3402 /* create initial NEWSEGMENT event */
3403 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3404 stop = avi->segment.duration;
3406 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3408 if (avi->seek_event)
3409 gst_event_unref (avi->seek_event);
3410 avi->seek_event = gst_event_new_new_segment
3411 (FALSE, avi->segment.rate, GST_FORMAT_TIME,
3412 avi->segment.start, stop, avi->segment.start);
3414 /* at this point we know all the streams and we can signal the no more
3416 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3417 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3424 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3425 ("Invalid AVI header (no LIST at start): %"
3426 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3427 gst_buffer_unref (buf);
3428 return GST_FLOW_ERROR;
3432 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3433 ("Invalid AVI header (no hdrl at start): %"
3434 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3435 gst_buffer_unref (buf);
3436 return GST_FLOW_ERROR;
3440 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3441 ("Invalid AVI header (no avih at start): %"
3442 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3444 gst_buffer_unref (sub);
3445 gst_buffer_unref (buf);
3446 return GST_FLOW_ERROR;
3450 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3451 ("Invalid AVI header (cannot parse avih at start)"));
3452 gst_buffer_unref (buf);
3453 return GST_FLOW_ERROR;
3457 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3458 return GST_FLOW_ERROR;
3462 GST_WARNING ("file without or too big index");
3463 g_list_free (index);
3464 g_list_foreach (alloc, (GFunc) g_free, NULL);
3465 g_list_free (alloc);
3467 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3468 ("Could not get/create index"));
3469 return GST_FLOW_ERROR;
3473 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3474 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3475 return GST_FLOW_ERROR;
3480 * Do the actual seeking.
3483 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3485 GstClockTime seek_time;
3487 gst_avi_index_entry *entry, *kentry;
3490 seek_time = segment->last_stop;
3491 keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3493 /* FIXME: if we seek in an openDML file, we will have multiple
3494 * primary levels. Seeking in between those will cause havoc. */
3496 /* save old position so we can see if we must mark a discont. */
3497 old_entry = avi->current_entry;
3499 /* get the entry for the requested position, which is always in last_stop.
3500 * we search the index entry for stream 0, since all entries are sorted by
3501 * time and stream we automagically are positioned for the other streams as
3502 * well. FIXME, this code assumes the main stream with keyframes is stream 0,
3503 * which is mostly correct... */
3504 if (!(entry = gst_avi_demux_index_entry_for_time (avi, 0, seek_time)))
3507 GST_DEBUG_OBJECT (avi,
3508 "Got requested entry %d [stream:%d / ts:%" GST_TIME_FORMAT
3509 " / duration:%" GST_TIME_FORMAT "]", entry->index_nr,
3510 entry->stream_nr, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur));
3512 /* check if we are already on a keyframe */
3513 if (!(entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)) {
3514 /* now go to the previous keyframe, this is where we should start
3516 if (!(kentry = gst_avi_demux_index_prev (avi, 0, entry->index_nr,
3517 GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME))) {
3521 /* we were on a keyframe */
3525 GST_DEBUG_OBJECT (avi,
3526 "Got keyframe entry %d [stream:%d / ts:%" GST_TIME_FORMAT
3527 " / duration:%" GST_TIME_FORMAT "]", kentry->index_nr,
3528 entry->stream_nr, GST_TIME_ARGS (kentry->ts),
3529 GST_TIME_ARGS (kentry->dur));
3531 /* we must start decoding at the keyframe */
3532 avi->current_entry = kentry->index_nr;
3534 if (segment->rate < 0.0) {
3535 gst_avi_index_entry *next_keyframe;
3537 /* Because we don't know the frame order we need to push from the prev keyframe
3538 * to the next keyframe. If there is a smart decoder downstream he will notice
3539 * that there are too many encoded frames send and return UNEXPECTED when there
3540 * are enough decoded frames to fill the segment.
3543 gst_avi_demux_index_next (avi, 0, kentry->index_nr,
3544 GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME);
3546 next_keyframe = gst_avi_demux_index_last (avi, 0);
3548 avi->reverse_start_index = kentry->index_nr;
3549 avi->reverse_stop_index = next_keyframe->index_nr;
3551 GST_DEBUG_OBJECT (avi, "reverse seek: start idx (%d) and stop idx (%d)",
3552 avi->reverse_start_index, avi->reverse_stop_index);
3556 /* when seeking to a keyframe, we update the result seek time
3557 * to the time of the keyframe. */
3558 seek_time = avi->index_entries[avi->current_entry].ts;
3562 /* if we changed position, mark a DISCONT on all streams */
3563 if (avi->current_entry != old_entry) {
3566 for (i = 0; i < avi->num_streams; i++) {
3567 avi->stream[i].discont = TRUE;
3571 GST_DEBUG_OBJECT (avi, "seek: %" GST_TIME_FORMAT
3572 " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
3574 /* the seek time is also the last_stop and stream time */
3575 segment->last_stop = seek_time;
3576 segment->time = seek_time;
3582 /* we could not find an entry for the given time */
3583 GST_WARNING_OBJECT (avi,
3584 "Couldn't find AviIndexEntry for time:%" GST_TIME_FORMAT,
3585 GST_TIME_ARGS (seek_time));
3586 if (avi->current_entry >= avi->index_size && avi->index_size > 0)
3587 avi->current_entry = avi->index_size - 1;
3594 * Handle seek event.
3597 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
3602 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
3606 GstSegment seeksegment = { 0, };
3609 GST_DEBUG_OBJECT (avi, "doing seek with event");
3611 gst_event_parse_seek (event, &rate, &format, &flags,
3612 &cur_type, &cur, &stop_type, &stop);
3614 /* we have to have a format as the segment format. Try to convert
3616 if (format != GST_FORMAT_TIME) {
3617 GstFormat fmt = GST_FORMAT_TIME;
3618 gboolean res = TRUE;
3620 if (cur_type != GST_SEEK_TYPE_NONE)
3621 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
3622 if (res && stop_type != GST_SEEK_TYPE_NONE)
3623 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
3629 GST_DEBUG_OBJECT (avi,
3630 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
3631 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
3632 /* FIXME: can we do anything with rate!=1.0 */
3634 GST_DEBUG_OBJECT (avi, "doing seek without event");
3639 /* save flush flag */
3640 flush = flags & GST_SEEK_FLAG_FLUSH;
3643 GstEvent *event = gst_event_new_flush_start ();
3645 /* for a flushing seek, we send a flush_start on all pads. This will
3646 * eventually stop streaming with a WRONG_STATE. We can thus eventually
3647 * take the STREAM_LOCK. */
3648 GST_DEBUG_OBJECT (avi, "sending flush start");
3649 gst_avi_demux_push_event (avi, gst_event_ref (event));
3650 gst_pad_push_event (avi->sinkpad, event);
3652 /* a non-flushing seek, we PAUSE the task so that we can take the
3654 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
3655 gst_pad_pause_task (avi->sinkpad);
3658 /* wait for streaming to stop */
3659 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
3660 GST_PAD_STREAM_LOCK (avi->sinkpad);
3662 /* copy segment, we need this because we still need the old
3663 * segment when we close the current segment. */
3664 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
3667 GST_DEBUG_OBJECT (avi, "configuring seek");
3668 gst_segment_set_seek (&seeksegment, rate, format, flags,
3669 cur_type, cur, stop_type, stop, &update);
3672 /* do the seek, seeksegment.last_stop contains the new position, this
3673 * actually never fails. */
3674 gst_avi_demux_do_seek (avi, &seeksegment);
3679 GST_DEBUG_OBJECT (avi, "sending flush stop");
3680 gst_avi_demux_push_event (avi, gst_event_new_flush_stop ());
3681 gst_pad_push_event (avi->sinkpad, gst_event_new_flush_stop ());
3682 /* reset the last flow and mark discont, FLUSH is always DISCONT */
3683 for (i = 0; i < avi->num_streams; i++) {
3684 avi->stream[i].last_flow = GST_FLOW_OK;
3685 avi->stream[i].discont = TRUE;
3687 } else if (avi->segment_running) {
3690 /* we are running the current segment and doing a non-flushing seek,
3691 * close the segment first based on the last_stop. */
3692 GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
3693 " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
3694 seg = gst_event_new_new_segment (TRUE,
3695 avi->segment.rate, avi->segment.format,
3696 avi->segment.start, avi->segment.last_stop, avi->segment.time);
3697 gst_avi_demux_push_event (avi, seg);
3700 /* now update the real segment info */
3701 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
3703 /* post the SEGMENT_START message when we do segmented playback */
3704 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
3705 gst_element_post_message (GST_ELEMENT (avi),
3706 gst_message_new_segment_start (GST_OBJECT (avi),
3707 avi->segment.format, avi->segment.last_stop));
3710 /* prepare for streaming again */
3711 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3712 stop = avi->segment.duration;
3714 /* queue the segment event for the streaming thread. */
3715 if (avi->seek_event)
3716 gst_event_unref (avi->seek_event);
3717 if (avi->segment.rate > 0.0) {
3718 avi->seek_event = gst_event_new_new_segment (FALSE,
3719 avi->segment.rate, avi->segment.format,
3720 avi->segment.last_stop, stop, avi->segment.time);
3722 avi->seek_event = gst_event_new_new_segment (FALSE,
3723 avi->segment.rate, avi->segment.format,
3724 avi->segment.start, avi->segment.last_stop, avi->segment.start);
3727 if (!avi->streaming) {
3728 avi->segment_running = TRUE;
3729 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
3732 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
3739 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
3745 * Helper for gst_avi_demux_invert()
3748 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
3750 memcpy (tmp, d1, bytes);
3751 memcpy (d1, d2, bytes);
3752 memcpy (d2, tmp, bytes);
3756 #define gst_avi_demux_is_uncompressed(fourcc) \
3757 (fourcc == GST_RIFF_DIB || \
3758 fourcc == GST_RIFF_rgb || \
3759 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
3762 * Invert DIB buffers... Takes existing buffer and
3763 * returns either the buffer or a new one (with old
3764 * one dereferenced).
3765 * FIXME: can't we preallocate tmp? and remember stride, bpp?
3768 gst_avi_demux_invert (avi_stream_context * stream, GstBuffer * buf)
3775 if (stream->strh->type != GST_RIFF_FCC_vids)
3778 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
3779 return buf; /* Ignore non DIB buffers */
3782 s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
3783 if (!gst_structure_get_int (s, "bpp", &bpp)) {
3784 GST_WARNING ("Failed to retrieve depth from caps");
3788 if (stream->strf.vids == NULL) {
3789 GST_WARNING ("Failed to retrieve vids for stream");
3793 h = stream->strf.vids->height;
3794 w = stream->strf.vids->width;
3795 stride = w * (bpp / 8);
3797 buf = gst_buffer_make_writable (buf);
3798 if (GST_BUFFER_SIZE (buf) < (stride * h)) {
3799 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
3803 tmp = g_malloc (stride);
3805 for (y = 0; y < h / 2; y++) {
3806 swap_line (GST_BUFFER_DATA (buf) + stride * y,
3807 GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
3816 * Returns the aggregated GstFlowReturn.
3818 static GstFlowReturn
3819 gst_avi_demux_combine_flows (GstAviDemux * avi, avi_stream_context * stream,
3824 /* store the value */
3825 stream->last_flow = ret;
3827 /* any other error that is not-linked can be returned right away */
3828 if (G_UNLIKELY (ret != GST_FLOW_NOT_LINKED))
3831 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
3832 for (i = 0; i < avi->num_streams; i++) {
3833 avi_stream_context *ostream = &avi->stream[i];
3835 ret = ostream->last_flow;
3836 /* some other return value (must be SUCCESS but we can return
3837 * other values as well) */
3838 if (G_UNLIKELY (ret != GST_FLOW_NOT_LINKED))
3841 /* if we get here, all other pads were unlinked and we return
3842 * NOT_LINKED then */
3844 GST_LOG_OBJECT (avi, "combined return %s", gst_flow_get_name (ret));
3849 * prepare the avi element for a reverse jump to a prev keyframe
3850 * this function will return the start entry. if the function returns
3851 * NULL there was no prev keyframe.
3853 static gst_avi_index_entry *
3854 gst_avi_demux_step_reverse (GstAviDemux * avi)
3856 gst_avi_index_entry *entry;
3859 avi->reverse_stop_index = avi->reverse_start_index;
3861 gst_avi_demux_index_prev (avi, 0, avi->reverse_stop_index,
3862 GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME);
3864 GST_DEBUG_OBJECT (avi, "no valid index entry found index %d",
3865 avi->reverse_stop_index);
3868 avi->current_entry = avi->reverse_start_index = entry->index_nr;
3869 GST_DEBUG_OBJECT (avi,
3870 "reverse playback jump: start idx (%d) and stop idx (%d)",
3871 avi->reverse_start_index, avi->reverse_stop_index);
3872 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, entry->ts);
3873 for (i = 0; i < avi->num_streams; i++) {
3874 avi->stream[i].last_flow = GST_FLOW_OK;
3875 avi->stream[i].discont = TRUE;
3881 * Read data from one index entry
3883 static GstFlowReturn
3884 gst_avi_demux_process_next_entry (GstAviDemux * avi)
3886 GstFlowReturn res = GST_FLOW_OK;
3887 gboolean processed = FALSE;
3888 avi_stream_context *stream;
3889 gst_avi_index_entry *entry;
3893 /* see if we are at the end */
3894 if ((avi->segment.rate > 0 && avi->current_entry >= avi->index_size))
3897 /* get next entry, this will work as we checked for the index size above */
3898 entry = &avi->index_entries[avi->current_entry++];
3900 /* check for reverse playback */
3901 if (avi->segment.rate < 0 && avi->current_entry > avi->reverse_stop_index) {
3902 GST_LOG_OBJECT (avi, "stop_index %d reached", avi->reverse_stop_index);
3904 /* check if we have pushed enough data for this segment */
3905 if (avi->reverse_start_index == 0)
3906 goto eos_reverse_zero;
3907 if (avi->index_entries[avi->reverse_start_index].ts < avi->segment.start)
3908 goto eos_reverse_segment;
3910 if (!(entry = gst_avi_demux_step_reverse (avi)))
3913 avi->current_entry++;
3916 /* see if we have a valid stream, ignore if not
3917 * FIXME: can't we check this when building the index?
3918 * we check it in _parse_index(), _stream_scan()
3920 if (entry->stream_nr >= avi->num_streams) {
3921 GST_WARNING_OBJECT (avi,
3922 "Entry %d has non-existing stream nr %d",
3923 avi->current_entry - 1, entry->stream_nr);
3927 /* get stream now */
3928 stream = &avi->stream[entry->stream_nr];
3930 if (avi->segment.rate > 0.0) {
3931 /* only check this for fowards playback for now */
3932 if ((entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
3933 && GST_CLOCK_TIME_IS_VALID (entry->ts)
3934 && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
3935 && (entry->ts > avi->segment.stop)) {
3940 /* skip empty entries */
3941 if (entry->size == 0 || !stream->pad) {
3942 GST_DEBUG_OBJECT (avi, "Skipping entry %d (%d, %p)",
3943 avi->current_entry - 1, entry->size, stream->pad);
3947 GST_LOG ("reading buffer (size=%d) from stream %d at current pos %"
3948 G_GUINT64_FORMAT " (%llx)", entry->size, entry->stream_nr,
3949 avi->index_offset + entry->offset, avi->index_offset + entry->offset);
3951 /* pull in the data */
3952 res = gst_pad_pull_range (avi->sinkpad, entry->offset +
3953 avi->index_offset, entry->size, &buf);
3954 if (res != GST_FLOW_OK)
3957 /* check for short buffers, this is EOS as well */
3958 if (GST_BUFFER_SIZE (buf) < entry->size)
3961 /* invert the picture if needed */
3962 buf = gst_avi_demux_invert (stream, buf);
3964 /* mark non-keyframes */
3965 if (!(entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME))
3966 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
3968 GST_BUFFER_TIMESTAMP (buf) = entry->ts;
3969 GST_BUFFER_DURATION (buf) = entry->dur;
3970 if (stream->strh->type == GST_RIFF_FCC_vids) {
3971 if (stream->current_frame >= 0)
3972 GST_BUFFER_OFFSET (buf) = stream->current_frame;
3975 GstFormat fmt = GST_FORMAT_DEFAULT;
3977 if (gst_pad_query_convert (stream->pad, GST_FORMAT_TIME, entry->ts,
3979 GST_BUFFER_OFFSET (buf) = framenum;
3981 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
3984 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
3985 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
3986 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
3988 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %d, offset %"
3989 G_GUINT64_FORMAT " and time %"
3990 GST_TIME_FORMAT " on pad %s",
3991 GST_BUFFER_SIZE (buf), GST_BUFFER_OFFSET (buf),
3992 GST_TIME_ARGS (entry->ts), GST_PAD_NAME (stream->pad));
3994 /* update current position in the segment */
3995 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, entry->ts);
3997 /* mark discont when pending */
3998 if (stream->discont) {
3999 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4000 stream->discont = FALSE;
4003 res = gst_pad_push (stream->pad, buf);
4005 /* mark as processed, we increment the frame and byte counters then
4006 * leave the while loop and return the GstFlowReturn */
4008 GST_DEBUG_OBJECT (avi, "Processed buffer %d: %s", entry->index_nr,
4009 gst_flow_get_name (res));
4011 if (avi->segment.rate < 0
4012 && entry->ts > avi->segment.stop && res == GST_FLOW_UNEXPECTED) {
4013 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4014 * we are at the end of the segment, so we just need to jump
4015 * back to the previous section.
4017 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4019 if (!(entry = gst_avi_demux_step_reverse (avi)))
4024 stream->current_frame = entry->frames_before;
4025 stream->current_byte = entry->bytes_before;
4031 res = gst_avi_demux_combine_flows (avi, stream, res);
4034 stream->current_frame = entry->frames_before + 1;
4035 stream->current_byte = entry->bytes_before + entry->size;
4036 } while (!processed);
4039 GST_DEBUG_OBJECT (avi, "returning %s", gst_flow_get_name (res));
4046 GST_LOG_OBJECT (avi, "Handled last index entry, setting EOS (%d > %d)",
4047 avi->current_entry, avi->index_size);
4048 /* we mark the first stream as EOS */
4049 res = GST_FLOW_UNEXPECTED;
4054 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4055 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4056 GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (avi->segment.stop));
4057 res = GST_FLOW_UNEXPECTED;
4062 GST_DEBUG_OBJECT (avi, "start_index was 0, setting EOS");
4063 res = GST_FLOW_UNEXPECTED;
4066 eos_reverse_segment:
4068 GST_DEBUG_OBJECT (avi, "full segment pushed, setting EOS");
4069 res = GST_FLOW_UNEXPECTED;
4074 GST_DEBUG_OBJECT (avi,
4075 "pull range failed: pos=%" G_GUINT64_FORMAT " size=%d",
4076 entry->offset + avi->index_offset, entry->size);
4081 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4082 ", only got %d/%d bytes (truncated file?)", entry->offset +
4083 avi->index_offset, GST_BUFFER_SIZE (buf), entry->size);
4084 gst_buffer_unref (buf);
4085 res = GST_FLOW_UNEXPECTED;
4091 * Read data. If we have an index it delegates to
4092 * gst_avi_demux_process_next_entry().
4094 static GstFlowReturn
4095 gst_avi_demux_stream_data (GstAviDemux * avi)
4100 GstFlowReturn res = GST_FLOW_OK;
4101 GstFormat format = GST_FORMAT_TIME;
4103 /* if we have a avi->index_entries[], we don't want to read
4104 * the stream linearly, but seek to the next ts/index_entry. */
4105 if (G_LIKELY (avi->index_entries != NULL))
4106 return gst_avi_demux_process_next_entry (avi);
4108 if (G_UNLIKELY (avi->have_eos)) {
4109 /* Clean adapter, we're done */
4110 gst_adapter_clear (avi->adapter);
4115 if (!gst_avi_demux_sync (avi, &tag, FALSE))
4119 /* Iterate until need more data, so adapter won't grow too much */
4121 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4125 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4126 GST_FOURCC_ARGS (tag), size);
4128 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4129 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4130 GST_LOG ("Chunk ok");
4131 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4132 GST_DEBUG ("Found sub-index tag");
4133 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
4134 if ((size > 0) && (size != -1)) {
4135 GST_DEBUG (" skipping %d bytes for now", size);
4136 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4140 } else if (tag == GST_RIFF_TAG_JUNK) {
4141 GST_DEBUG ("JUNK chunk, skipping");
4142 } else if (tag == GST_RIFF_TAG_idx1) {
4143 GST_DEBUG ("Found index tag, stream done");
4144 avi->have_eos = TRUE;
4145 return GST_FLOW_UNEXPECTED;
4146 } else if (tag == GST_RIFF_TAG_LIST) {
4147 /* movi chunks might be grouped in rec list */
4148 if (gst_adapter_available (avi->adapter) >= 12) {
4149 GST_DEBUG ("Found LIST tag, skipping LIST header");
4150 gst_adapter_flush (avi->adapter, 12);
4154 } else if (tag == GST_RIFF_TAG_JUNK) {
4155 /* rec list might contain JUNK chunks */
4156 GST_DEBUG ("Found JUNK tag");
4157 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
4158 if ((size > 0) && (size != -1)) {
4159 GST_DEBUG (" skipping %d bytes for now", size);
4160 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4166 GST_DEBUG ("No more stream chunks, send EOS");
4167 avi->have_eos = TRUE;
4168 return GST_FLOW_UNEXPECTED;
4171 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4172 if ((size == 0) || (size == -1))
4173 gst_adapter_flush (avi->adapter, 8);
4176 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4177 GST_FOURCC_ARGS (tag), size);
4179 stream_nr = CHUNKID_TO_STREAMNR (tag);
4181 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4183 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4184 stream_nr, GST_FOURCC_ARGS (tag));
4185 avi->offset += 8 + ((size + 1) & ~1);
4186 gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
4188 avi_stream_context *stream;
4189 GstClockTime next_ts = 0;
4192 gst_adapter_flush (avi->adapter, 8);
4195 buf = gst_adapter_take_buffer (avi->adapter, ((size + 1) & ~1));
4196 /* patch the size */
4197 GST_BUFFER_SIZE (buf) = size;
4198 avi->offset += 8 + ((size + 1) & ~1);
4200 /* get time of this buffer */
4201 stream = &avi->stream[stream_nr];
4202 gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
4203 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4206 /* set delay (if any)
4207 if (stream->strh->init_frames == stream->current_frame &&
4209 stream->delay = next_ts;
4212 stream->current_frame++;
4213 stream->current_byte += size;
4215 if (G_UNLIKELY (!stream->pad)) {
4216 GST_WARNING ("No pad.");
4217 gst_buffer_unref (buf);
4219 GstClockTime dur_ts = 0;
4221 /* invert the picture if needed */
4222 buf = gst_avi_demux_invert (stream, buf);
4224 gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
4225 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4228 GST_BUFFER_TIMESTAMP (buf) = next_ts;
4229 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
4230 if (stream->strh->type == GST_RIFF_FCC_vids)
4231 GST_BUFFER_OFFSET (buf) = stream->current_frame - 1;
4233 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4235 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4236 GST_DEBUG_OBJECT (avi,
4237 "Pushing buffer with time=%" GST_TIME_FORMAT
4238 ", offset %" G_GUINT64_FORMAT " and size %d over pad %s",
4239 GST_TIME_ARGS (next_ts), GST_BUFFER_OFFSET (buf), size,
4240 GST_PAD_NAME (stream->pad));
4242 /* update current position in the segment */
4243 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
4245 /* mark discont when pending */
4246 if (G_UNLIKELY (stream->discont)) {
4247 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4248 stream->discont = FALSE;
4250 res = gst_pad_push (stream->pad, buf);
4253 res = gst_avi_demux_combine_flows (avi, stream, res);
4254 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4255 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
4268 GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
4269 gst_format_get_name (format));
4270 res = GST_FLOW_ERROR;
4276 * Send pending tags.
4279 push_tag_lists (GstAviDemux * avi)
4286 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
4288 for (i = 0; i < avi->num_streams; i++)
4289 if (avi->stream[i].pad && avi->stream[i].taglist) {
4290 GST_DEBUG_OBJECT (avi->stream[i].pad, "Tags: %" GST_PTR_FORMAT,
4291 avi->stream[i].taglist);
4292 gst_element_found_tags_for_pad (GST_ELEMENT (avi), avi->stream[i].pad,
4293 avi->stream[i].taglist);
4294 avi->stream[i].taglist = NULL;
4297 if (avi->globaltags == NULL)
4298 avi->globaltags = gst_tag_list_new ();
4300 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE,
4301 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
4303 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, avi->globaltags);
4304 gst_element_found_tags (GST_ELEMENT (avi), avi->globaltags);
4305 avi->globaltags = NULL;
4306 avi->got_tags = FALSE;
4310 gst_avi_demux_loop (GstPad * pad)
4313 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4315 switch (avi->state) {
4316 case GST_AVI_DEMUX_START:
4317 if (G_UNLIKELY ((res =
4318 gst_avi_demux_stream_init_pull (avi)) != GST_FLOW_OK)) {
4319 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4322 avi->state = GST_AVI_DEMUX_HEADER;
4324 case GST_AVI_DEMUX_HEADER:
4325 if (G_UNLIKELY ((res =
4326 gst_avi_demux_stream_header_pull (avi)) != GST_FLOW_OK)) {
4327 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4330 avi->state = GST_AVI_DEMUX_MOVI;
4332 case GST_AVI_DEMUX_MOVI:
4333 if (G_UNLIKELY (avi->seek_event)) {
4334 gst_avi_demux_push_event (avi, avi->seek_event);
4335 avi->seek_event = NULL;
4337 if (G_UNLIKELY (avi->got_tags)) {
4338 push_tag_lists (avi);
4340 /* process each index entry in turn */
4341 res = gst_avi_demux_stream_data (avi);
4343 /* pause when error */
4344 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4345 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
4350 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
4351 res = GST_FLOW_ERROR;
4355 GST_LOG_OBJECT (avi, "state: %d res:%s", avi->state, gst_flow_get_name (res));
4361 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
4362 avi->segment_running = FALSE;
4363 gst_pad_pause_task (avi->sinkpad);
4365 if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
4366 gboolean push_eos = TRUE;
4368 if (res == GST_FLOW_UNEXPECTED) {
4369 /* handle end-of-stream/segment */
4370 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4373 if ((stop = avi->segment.stop) == -1)
4374 stop = avi->segment.duration;
4376 GST_INFO_OBJECT (avi, "sending segment_done");
4378 gst_element_post_message
4380 gst_message_new_segment_done (GST_OBJECT (avi), GST_FORMAT_TIME,
4385 /* for fatal errors we post an error message */
4386 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
4387 (_("Internal data stream error.")),
4388 ("streaming stopped, reason %s", gst_flow_get_name (res)));
4391 GST_INFO_OBJECT (avi, "sending eos");
4392 gst_avi_demux_push_event (avi, gst_event_new_eos ());
4398 static GstFlowReturn
4399 gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
4402 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4404 GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
4405 gst_adapter_push (avi->adapter, buf);
4407 switch (avi->state) {
4408 case GST_AVI_DEMUX_START:
4409 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
4410 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4414 case GST_AVI_DEMUX_HEADER:
4415 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
4416 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4420 case GST_AVI_DEMUX_MOVI:
4421 if (G_UNLIKELY (avi->seek_event)) {
4422 gst_avi_demux_push_event (avi, avi->seek_event);
4423 avi->seek_event = NULL;
4425 if (G_UNLIKELY (avi->got_tags)) {
4426 push_tag_lists (avi);
4428 res = gst_avi_demux_stream_data (avi);
4431 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
4432 ("Illegal internal state"));
4433 res = GST_FLOW_ERROR;
4437 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
4438 gst_flow_get_name (res));
4444 gst_avi_demux_sink_activate (GstPad * sinkpad)
4446 if (gst_pad_check_pull_range (sinkpad)) {
4447 GST_DEBUG ("going to pull mode");
4448 return gst_pad_activate_pull (sinkpad, TRUE);
4450 GST_DEBUG ("going to push (streaming) mode");
4451 return gst_pad_activate_push (sinkpad, TRUE);
4456 gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
4458 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
4461 avi->segment_running = TRUE;
4462 avi->streaming = FALSE;
4463 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4466 avi->segment_running = FALSE;
4467 return gst_pad_stop_task (sinkpad);
4472 gst_avi_demux_activate_push (GstPad * pad, gboolean active)
4474 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
4477 GST_DEBUG ("avi: activating push/chain function");
4478 avi->streaming = TRUE;
4480 GST_DEBUG ("avi: deactivating push/chain function");
4486 static GstStateChangeReturn
4487 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
4489 GstStateChangeReturn ret;
4490 GstAviDemux *avi = GST_AVI_DEMUX (element);
4492 switch (transition) {
4493 case GST_STATE_CHANGE_READY_TO_PAUSED:
4494 avi->streaming = FALSE;
4495 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
4501 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
4502 if (ret == GST_STATE_CHANGE_FAILURE)
4505 switch (transition) {
4506 case GST_STATE_CHANGE_PAUSED_TO_READY:
4507 gst_avi_demux_reset (avi);