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 GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT,
1505 GST_FOURCC_ARGS (tag));
1509 case GST_RIFF_TAG_strh:
1511 gst_riff_strh *strh;
1514 GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk");
1517 if (!gst_riff_parse_strh (element, sub, &stream->strh)) {
1518 /* ownership given away */
1520 GST_WARNING_OBJECT (avi, "Failed to parse strh chunk");
1524 strh = stream->strh;
1525 /* sanity check; stream header frame rate matches global header
1527 if (stream->strh->type == GST_RIFF_FCC_vids) {
1529 GstClockTime h_dur = avi->avih->us_frame * GST_USECOND;
1531 s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate);
1532 GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, "
1533 "frame duration = %d ms", strh->rate, strh->scale,
1534 s_dur / GST_MSECOND);
1535 if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) {
1536 strh->rate = GST_SECOND / GST_USECOND;
1537 strh->scale = h_dur / GST_USECOND;
1538 GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d",
1539 strh->rate, strh->scale);
1542 /* determine duration as indicated by header */
1543 stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length *
1544 strh->scale, GST_SECOND, (guint64) strh->rate);
1545 GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT,
1546 GST_TIME_ARGS (stream->hdr_duration));
1547 if (stream->hdr_duration == 0)
1548 stream->hdr_duration = GST_CLOCK_TIME_NONE;
1553 case GST_RIFF_TAG_strf:
1555 gboolean res = FALSE;
1558 GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk");
1562 GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk");
1565 switch (stream->strh->type) {
1566 case GST_RIFF_FCC_vids:
1567 stream->is_vbr = TRUE;
1568 res = gst_riff_parse_strf_vids (element, sub,
1569 &stream->strf.vids, &stream->extradata);
1571 GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res);
1573 case GST_RIFF_FCC_auds:
1574 stream->is_vbr = (stream->strh->samplesize == 0)
1575 && stream->strh->scale > 1;
1577 gst_riff_parse_strf_auds (element, sub, &stream->strf.auds,
1578 &stream->extradata);
1580 GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d",
1581 stream->is_vbr, res);
1583 case GST_RIFF_FCC_iavs:
1584 stream->is_vbr = TRUE;
1585 res = gst_riff_parse_strf_iavs (element, sub,
1586 &stream->strf.iavs, &stream->extradata);
1588 GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res);
1590 case GST_RIFF_FCC_txts:
1591 /* nothing to parse here */
1592 stream->is_vbr = (stream->strh->samplesize == 0)
1593 && (stream->strh->scale > 1);
1597 GST_ERROR_OBJECT (avi,
1598 "Don´t know how to handle stream type %" GST_FOURCC_FORMAT,
1599 GST_FOURCC_ARGS (stream->strh->type));
1603 gst_buffer_unref (sub);
1611 case GST_RIFF_TAG_vprp:
1614 GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk");
1618 GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk");
1622 GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk");
1626 if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) {
1627 GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk");
1628 /* not considered fatal */
1636 case GST_RIFF_TAG_strd:
1637 if (stream->initdata)
1638 gst_buffer_unref (stream->initdata);
1639 stream->initdata = sub;
1642 case GST_RIFF_TAG_strn:
1643 g_free (stream->name);
1646 g_strndup ((gchar *) GST_BUFFER_DATA (sub),
1647 (gsize) GST_BUFFER_SIZE (sub));
1648 gst_buffer_unref (sub);
1651 stream->name = g_strdup ("");
1653 GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name);
1656 if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') ||
1657 tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10,
1658 '0' + avi->num_streams % 10)) {
1659 g_free (stream->indexes);
1660 gst_avi_demux_parse_superindex (avi, sub, &stream->indexes);
1661 stream->superindex = TRUE;
1665 GST_WARNING_OBJECT (avi,
1666 "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring",
1667 GST_FOURCC_ARGS (tag));
1669 case GST_RIFF_TAG_JUNK:
1673 gst_buffer_unref (sub);
1679 GST_WARNING_OBJECT (avi, "Failed to find strh chunk");
1684 GST_WARNING_OBJECT (avi, "Failed to find strf chunk");
1688 /* get class to figure out the template */
1689 klass = GST_ELEMENT_GET_CLASS (avi);
1691 /* we now have all info, let´s set up a pad and a caps and be done */
1692 /* create stream name + pad */
1693 switch (stream->strh->type) {
1694 case GST_RIFF_FCC_vids:{
1697 fourcc = (stream->strf.vids->compression) ?
1698 stream->strf.vids->compression : stream->strh->fcc_handler;
1699 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
1700 templ = gst_element_class_get_pad_template (klass, "video_%02d");
1701 caps = gst_riff_create_video_caps (fourcc, stream->strh,
1702 stream->strf.vids, stream->extradata, stream->initdata, &codec_name);
1704 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
1705 GST_TYPE_FOURCC, fourcc, NULL);
1706 } else if (got_vprp && vprp) {
1707 guint32 aspect_n, aspect_d;
1710 aspect_n = vprp->aspect >> 16;
1711 aspect_d = vprp->aspect & 0xffff;
1712 /* calculate the pixel aspect ratio using w/h and aspect ratio */
1713 n = aspect_n * stream->strf.vids->height;
1714 d = aspect_d * stream->strf.vids->width;
1716 gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
1718 /* very local, not needed elsewhere */
1722 tag_name = GST_TAG_VIDEO_CODEC;
1723 avi->num_v_streams++;
1726 case GST_RIFF_FCC_auds:{
1727 padname = g_strdup_printf ("audio_%02d", avi->num_a_streams);
1728 templ = gst_element_class_get_pad_template (klass, "audio_%02d");
1729 caps = gst_riff_create_audio_caps (stream->strf.auds->format,
1730 stream->strh, stream->strf.auds, stream->extradata,
1731 stream->initdata, &codec_name);
1733 caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id",
1734 G_TYPE_INT, stream->strf.auds->format, NULL);
1736 tag_name = GST_TAG_AUDIO_CODEC;
1737 avi->num_a_streams++;
1740 case GST_RIFF_FCC_iavs:{
1741 guint32 fourcc = stream->strh->fcc_handler;
1743 padname = g_strdup_printf ("video_%02d", avi->num_v_streams);
1744 templ = gst_element_class_get_pad_template (klass, "video_%02d");
1745 caps = gst_riff_create_iavs_caps (fourcc, stream->strh,
1746 stream->strf.iavs, stream->extradata, stream->initdata, &codec_name);
1748 caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc",
1749 GST_TYPE_FOURCC, fourcc, NULL);
1751 tag_name = GST_TAG_VIDEO_CODEC;
1752 avi->num_v_streams++;
1755 case GST_RIFF_FCC_txts:{
1756 padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams);
1757 templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
1758 caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL);
1760 avi->num_t_streams++;
1764 g_assert_not_reached ();
1767 /* no caps means no stream */
1769 GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname);
1773 GST_DEBUG_OBJECT (element, "codec-name=%s",
1774 (codec_name ? codec_name : "NULL"));
1775 GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps);
1777 /* set proper settings and add it */
1779 gst_object_unref (stream->pad);
1780 pad = stream->pad = gst_pad_new_from_template (templ, padname);
1781 stream->last_flow = GST_FLOW_OK;
1782 stream->discont = TRUE;
1785 gst_pad_use_fixed_caps (pad);
1787 gst_pad_set_formats_function (pad,
1788 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats));
1789 gst_pad_set_event_mask_function (pad,
1790 GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask));
1792 gst_pad_set_event_function (pad,
1793 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event));
1794 gst_pad_set_query_type_function (pad,
1795 GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types));
1796 gst_pad_set_query_function (pad,
1797 GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query));
1799 gst_pad_set_convert_function (pad,
1800 GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert));
1803 stream->num = avi->num_streams;
1804 stream->total_bytes = 0;
1805 stream->total_frames = 0;
1806 stream->total_blocks = 0;
1807 stream->current_frame = 0;
1808 stream->current_byte = 0;
1809 gst_pad_set_element_private (pad, stream);
1811 gst_pad_set_caps (pad, caps);
1812 gst_pad_set_active (pad, TRUE);
1813 gst_element_add_pad (GST_ELEMENT (avi), pad);
1814 GST_LOG_OBJECT (element, "Added pad %s with caps %" GST_PTR_FORMAT,
1815 GST_PAD_NAME (pad), caps);
1816 gst_caps_unref (caps);
1820 if (!stream->taglist)
1821 stream->taglist = gst_tag_list_new ();
1823 avi->got_tags = TRUE;
1825 gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name,
1827 g_free (codec_name);
1830 gst_buffer_unref (buf);
1837 /* unref any mem that may be in use */
1839 gst_buffer_unref (buf);
1841 gst_buffer_unref (sub);
1843 g_free (codec_name);
1844 g_free (stream->strh);
1845 g_free (stream->strf.data);
1846 g_free (stream->name);
1847 g_free (stream->indexes);
1848 if (stream->initdata)
1849 gst_buffer_unref (stream->initdata);
1850 if (stream->extradata)
1851 gst_buffer_unref (stream->extradata);
1852 memset (stream, 0, sizeof (avi_stream_context));
1859 * gst_avi_demux_parse_odml:
1860 * @avi: calling element (used for debug/error).
1861 * @buf: input buffer to be used for parsing.
1863 * Read an openDML-2.0 extension header. Fills in the frame number
1864 * in the avi demuxer object when reading succeeds.
1867 gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf)
1871 GstBuffer *sub = NULL;
1873 while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag,
1876 case GST_RIFF_TAG_dmlh:{
1877 gst_riff_dmlh dmlh, *_dmlh;
1880 /* sub == NULL is possible and means an empty buffer */
1881 size = sub ? GST_BUFFER_SIZE (sub) : 0;
1884 if (size < sizeof (gst_riff_dmlh)) {
1885 GST_ERROR_OBJECT (avi,
1886 "DMLH entry is too small (%d bytes, %d needed)",
1887 size, (int) sizeof (gst_riff_dmlh));
1890 _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub);
1891 dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes);
1893 GST_INFO_OBJECT (avi, "dmlh tag found:");
1894 GST_INFO_OBJECT (avi, " totalframes: %u", dmlh.totalframes);
1896 avi->avih->tot_frames = dmlh.totalframes;
1901 GST_WARNING_OBJECT (avi,
1902 "Unknown tag %" GST_FOURCC_FORMAT " in ODML header",
1903 GST_FOURCC_ARGS (tag));
1905 case GST_RIFF_TAG_JUNK:
1907 /* skip and move to next chunk */
1909 gst_buffer_unref (sub);
1916 gst_buffer_unref (buf);
1920 * Sort helper for index entries that sorts by index time.
1921 * If times are equal we sort by stream number.
1924 sort (gst_avi_index_entry * a, gst_avi_index_entry * b)
1928 else if (a->ts < b->ts)
1931 return a->stream_nr - b->stream_nr;
1935 * gst_avi_demux_parse_index:
1936 * @avi: calling element (used for debugging/errors).
1937 * @buf: buffer containing the full index.
1938 * @entries_list: list (returned by this function) containing the index
1939 * entries parsed from the buffer. The first in the list
1940 * is also a pointer to the allocated data and should be
1941 * free'ed at some point.
1943 * Read index entries from the provided buffer. Takes ownership of @buf.
1946 gst_avi_demux_parse_index (GstAviDemux * avi,
1947 GstBuffer * buf, GList ** _entries_list)
1949 guint64 pos_before = avi->offset;
1950 gst_avi_index_entry *entries = NULL;
1952 GList *entries_list = NULL;
1955 #ifndef GST_DISABLE_GST_DEBUG
1956 gulong _nr_keyframes = 0;
1959 if (!buf || !GST_BUFFER_SIZE (buf)) {
1960 *_entries_list = NULL;
1961 GST_DEBUG ("empty index");
1963 gst_buffer_unref (buf);
1967 data = GST_BUFFER_DATA (buf);
1968 num = GST_BUFFER_SIZE (buf) / sizeof (gst_riff_index_entry);
1969 if (!(entries = g_try_new (gst_avi_index_entry, num)))
1972 GST_INFO ("Parsing index, nr_entries = %6d", num);
1974 for (i = 0, n = 0; i < num; i++) {
1976 gst_riff_index_entry entry, *_entry;
1977 avi_stream_context *stream;
1979 gst_avi_index_entry *target;
1981 _entry = &((gst_riff_index_entry *) data)[i];
1982 entry.id = GST_READ_UINT32_LE (&_entry->id);
1983 entry.offset = GST_READ_UINT32_LE (&_entry->offset);
1984 entry.flags = GST_READ_UINT32_LE (&_entry->flags);
1985 entry.size = GST_READ_UINT32_LE (&_entry->size);
1986 target = &entries[n];
1988 if (entry.id == GST_RIFF_rec || entry.id == 0 ||
1989 (entry.offset == 0 && n > 0))
1992 stream_nr = CHUNKID_TO_STREAMNR (entry.id);
1993 if (stream_nr >= avi->num_streams) {
1994 GST_WARNING_OBJECT (avi,
1995 "Index entry %d has invalid stream nr %d", i, stream_nr);
1998 target->stream_nr = stream_nr;
1999 stream = &avi->stream[stream_nr];
2001 if (!stream->strh) {
2002 GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr);
2006 target->index_nr = i;
2008 (entry.flags & GST_RIFF_IF_KEYFRAME) ? GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME
2010 target->size = entry.size;
2011 target->offset = entry.offset + 8;
2013 /* figure out if the index is 0 based or relative to the MOVI start */
2015 if (target->offset < pos_before)
2016 avi->index_offset = pos_before + 8;
2018 avi->index_offset = 0;
2019 GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset);
2022 if (stream->strh->type == GST_RIFF_FCC_auds) {
2023 /* all audio frames are keyframes */
2024 target->flags |= GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
2026 #ifndef GST_DISABLE_GST_DEBUG
2027 if (target->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
2031 /* stream duration unknown, now we can calculate it */
2032 if (stream->idx_duration == -1)
2033 stream->idx_duration = 0;
2036 target->ts = stream->idx_duration;
2037 if (stream->is_vbr) {
2038 /* VBR stream next timestamp */
2039 if (stream->strh->type == GST_RIFF_FCC_auds) {
2040 next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
2041 stream->total_blocks + 1);
2043 next_ts = avi_stream_convert_frames_to_time_unchecked (stream,
2044 stream->total_frames + 1);
2047 /* constant rate stream */
2048 next_ts = avi_stream_convert_bytes_to_time_unchecked (stream,
2049 stream->total_bytes + target->size);
2051 /* duration is next - current */
2052 target->dur = next_ts - target->ts;
2054 /* stream position */
2055 target->bytes_before = stream->total_bytes;
2056 target->frames_before = stream->total_frames;
2058 stream->total_bytes += target->size;
2059 stream->total_frames++;
2060 if (stream->strh->type == GST_RIFF_FCC_auds) {
2061 if (stream->strf.auds->blockalign > 0)
2062 stream->total_blocks +=
2063 (target->size + stream->strf.auds->blockalign -
2064 1) / stream->strf.auds->blockalign;
2066 stream->total_blocks++;
2068 stream->idx_duration = next_ts;
2070 GST_LOG_OBJECT (avi,
2071 "Adding index entry %d (%6u), flags %02x, stream %d, size %u "
2072 ", offset %" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT ", dur %"
2074 target->index_nr, stream->total_frames - 1, target->flags,
2075 target->stream_nr, target->size, target->offset,
2076 GST_TIME_ARGS (target->ts), GST_TIME_ARGS (target->dur));
2077 entries_list = g_list_prepend (entries_list, target);
2082 GST_INFO ("Parsed index, %6d entries, %5ld keyframes, entry size = %2d, "
2083 "total size = %10d", num, _nr_keyframes,
2084 (gint) sizeof (gst_avi_index_entry),
2085 (gint) (num * sizeof (gst_avi_index_entry)));
2087 gst_buffer_unref (buf);
2090 *_entries_list = g_list_reverse (entries_list);
2099 GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL),
2100 ("Cannot allocate memory for %u*%u=%u bytes",
2101 (guint) sizeof (gst_avi_index_entry), num,
2102 (guint) sizeof (gst_avi_index_entry) * num));
2103 gst_buffer_unref (buf);
2108 * gst_avi_demux_stream_index:
2109 * @avi: avi demuxer object.
2110 * @index: list of index entries, returned by this function.
2111 * @alloc_list: list of allocated data, returned by this function.
2113 * Seeks to index and reads it.
2116 gst_avi_demux_stream_index (GstAviDemux * avi,
2117 GList ** index, GList ** alloc_list)
2120 guint64 offset = avi->offset;
2126 GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset);
2131 /* get chunk information */
2132 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2133 if (res != GST_FLOW_OK)
2135 else if (GST_BUFFER_SIZE (buf) < 8)
2138 /* check tag first before blindy trying to read 'size' bytes */
2139 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2140 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2141 if (tag == GST_RIFF_TAG_LIST) {
2142 /* this is the movi tag */
2143 GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT,
2144 (8 + ((size + 1) & ~1)));
2145 offset += 8 + ((size + 1) & ~1);
2146 gst_buffer_unref (buf);
2147 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2148 if (res != GST_FLOW_OK)
2150 else if (GST_BUFFER_SIZE (buf) < 8)
2152 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2153 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2156 if (tag != GST_RIFF_TAG_idx1)
2161 gst_buffer_unref (buf);
2163 GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset);
2165 /* read chunk, advance offset */
2166 if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi),
2167 avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK)
2170 GST_INFO ("will parse index chunk size %u for tag %"
2171 GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag));
2173 gst_avi_demux_parse_index (avi, buf, index);
2175 *alloc_list = g_list_append (*alloc_list, (*index)->data);
2177 /* debug our indexes */
2178 for (i = 0; i < avi->num_streams; i++) {
2179 avi_stream_context *stream;
2181 stream = &avi->stream[i];
2182 GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes",
2183 i, stream->total_frames, stream->total_bytes);
2190 GST_DEBUG_OBJECT (avi,
2191 "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset);
2196 GST_DEBUG_OBJECT (avi, "Buffer is too small");
2197 gst_buffer_unref (buf);
2202 GST_WARNING_OBJECT (avi,
2203 "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT,
2204 GST_FOURCC_ARGS (tag));
2205 gst_buffer_unref (buf);
2210 GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk");
2211 gst_buffer_unref (buf);
2218 * Sync to next data chunk.
2221 gst_avi_demux_skip (GstAviDemux * avi, gboolean prevent_eos)
2223 GstRiffRead *riff = GST_RIFF_READ (avi);
2226 guint64 pos, length;
2230 pos = gst_bytestream_tell (riff->bs);
2231 length = gst_bytestream_length (riff->bs);
2233 if (pos + 8 > length)
2236 if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
2239 size = GST_READ_UINT32_LE (&data[4]);
2243 /* Note, we're going to skip which might involve seeks. Therefore,
2244 * we need 1 byte more! */
2245 if (pos + 8 + size >= length)
2249 return gst_riff_read_skip (riff);
2253 gst_avi_demux_sync (GstAviDemux * avi, guint32 * ret_tag, gboolean prevent_eos)
2255 GstRiffRead *riff = GST_RIFF_READ (avi);
2257 guint64 length = gst_bytestream_length (riff->bs);
2259 if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
2262 /* peek first (for the end of this 'list/movi' section) */
2263 if (!(tag = gst_riff_peek_tag (riff, &avi->level_up)))
2266 /* if we're at top-level, we didn't read the 'movi'
2267 * list tag yet. This can also be 'AVIX' in case of
2268 * openDML-2.0 AVI files. Lastly, it might be idx1,
2269 * in which case we skip it so we come at EOS. */
2271 if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
2274 if (!(tag = gst_riff_peek_tag (riff, NULL)))
2278 case GST_RIFF_TAG_LIST:
2279 if (!(tag = gst_riff_peek_list (riff)))
2283 case GST_RIFF_LIST_AVIX:
2284 if (!gst_riff_read_list (riff, &tag))
2288 case GST_RIFF_LIST_movi:
2289 if (!gst_riff_read_list (riff, &tag))
2297 GST_WARNING ("Unknown list %" GST_FOURCC_FORMAT " before AVI data",
2298 GST_FOURCC_ARGS (tag));
2301 case GST_RIFF_TAG_JUNK:
2302 if (!gst_avi_demux_skip (avi, prevent_eos))
2309 if ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
2310 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9') {
2315 case GST_RIFF_TAG_idx1:
2316 case GST_RIFF_TAG_JUNK:
2317 if (!gst_avi_demux_skip (avi, prevent_eos)) {
2324 /* And then, we get the data */
2325 if (prevent_eos && gst_bytestream_tell (riff->bs) + 12 >= length)
2328 if (!(tag = gst_riff_peek_tag (riff, NULL)))
2331 /* Support for rec-list files */
2333 case GST_RIFF_TAG_LIST:
2334 if (!(tag = gst_riff_peek_list (riff)))
2336 if (tag == GST_RIFF_rec) {
2337 /* Simply skip the list */
2338 if (!gst_riff_read_list (riff, &tag))
2340 if (!(tag = gst_riff_peek_tag (riff, NULL)))
2345 case GST_RIFF_TAG_JUNK:
2346 gst_avi_demux_skip (avi, prevent_eos);
2358 * gst_avi_demux_peek_tag:
2360 * Returns the tag and size of the next chunk
2362 static GstFlowReturn
2363 gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag,
2366 GstFlowReturn res = GST_FLOW_OK;
2367 GstBuffer *buf = NULL;
2370 res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf);
2371 if (res != GST_FLOW_OK)
2374 bufsize = GST_BUFFER_SIZE (buf);
2378 *tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
2379 *size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
2381 GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %"
2382 G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag),
2383 *size, offset + 8, offset + 8 + (gint64) * size);
2385 gst_buffer_unref (buf);
2392 GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res));
2397 GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize);
2398 res = GST_FLOW_ERROR;
2404 * gst_avi_demux_next_data_buffer:
2406 * Returns the offset and size of the next buffer
2407 * Position is the position of the buffer (after tag and size)
2409 static GstFlowReturn
2410 gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset,
2411 guint32 * tag, guint * size)
2413 guint64 off = *offset;
2418 res = gst_avi_demux_peek_tag (avi, off, tag, &_size);
2419 if (res != GST_FLOW_OK)
2421 if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF)
2422 off += 8 + 4; /* skip tag + size + subtag */
2434 * gst_avi_demux_stream_scan:
2435 * @avi: calling element (used for debugging/errors).
2436 * @index: list of index entries, returned by this function.
2437 * @alloc_list: list of allocated data, returned by this function.
2439 * Scan the file for all chunks to "create" a new index.
2440 * Return value indicates if we can continue reading the stream. It
2441 * does not say anything about whether we created an index.
2446 gst_avi_demux_stream_scan (GstAviDemux * avi,
2447 GList ** index, GList ** alloc_list)
2450 gst_avi_index_entry *entry, *entries = NULL;
2451 avi_stream_context *stream;
2453 guint64 pos = avi->offset;
2458 guint index_size = 0;
2461 * - implement non-seekable source support.
2463 GST_DEBUG_OBJECT (avi,
2464 "Creating index %s existing index, starting at offset %" G_GUINT64_FORMAT,
2465 ((*index) ? "with" : "without"), pos);
2467 format = GST_FORMAT_BYTES;
2468 if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength))
2474 entry = g_list_last (*index)->data;
2475 pos = entry->offset + avi->index_offset + entry->size;
2476 if (entry->size & 1)
2479 if (pos >= length) {
2480 GST_LOG_OBJECT (avi, "Complete index, we're done");
2484 GST_LOG_OBJECT (avi, "Incomplete index, seeking to last valid entry @ %"
2485 G_GUINT64_FORMAT " of %" G_GUINT64_FORMAT " (%"
2486 G_GUINT64_FORMAT "+%u)", pos, length, entry->offset, entry->size);
2493 res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size);
2494 if (G_UNLIKELY (res != GST_FLOW_OK))
2497 /* check valid stream */
2498 stream_nr = CHUNKID_TO_STREAMNR (tag);
2499 if (G_UNLIKELY (stream_nr >= avi->num_streams)) {
2500 GST_WARNING_OBJECT (avi,
2501 "Index entry has invalid stream nr %d", stream_nr);
2505 stream = &avi->stream[stream_nr];
2506 if (G_UNLIKELY (stream->pad == NULL)) {
2507 GST_WARNING_OBJECT (avi,
2508 "Stream %d does not have an output pad, can't create new index",
2514 if (G_UNLIKELY (index_size % 1024 == 0)) {
2515 entries = g_new (gst_avi_index_entry, 1024);
2516 *alloc_list = g_list_prepend (*alloc_list, entries);
2518 entry = &entries[index_size % 1024];
2520 entry->index_nr = index_size++;
2521 entry->stream_nr = stream_nr;
2522 entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
2523 entry->offset = pos - avi->index_offset;
2526 /* timestamps, get timestamps of two consecutive frames to calculate
2527 * timestamp and duration. */
2528 format = GST_FORMAT_TIME;
2529 if (stream->is_vbr) {
2531 entry->ts = avi_stream_convert_frames_to_time_unchecked (stream,
2532 stream->total_frames);
2533 entry->dur = avi_stream_convert_frames_to_time_unchecked (stream,
2534 stream->total_frames + 1);
2536 /* constant rate stream */
2537 entry->ts = avi_stream_convert_bytes_to_time_unchecked (stream,
2538 stream->total_bytes);
2539 entry->dur = avi_stream_convert_bytes_to_time_unchecked (stream,
2540 stream->total_bytes + entry->size);
2542 entry->dur -= entry->ts;
2544 /* stream position */
2545 entry->bytes_before = stream->total_bytes;
2546 stream->total_bytes += entry->size;
2547 entry->frames_before = stream->total_frames;
2548 stream->total_frames++;
2549 stream->idx_duration = entry->ts + entry->dur;
2551 list = g_list_prepend (list, entry);
2552 GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
2553 G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
2554 index_size - 1, entry->frames_before, entry->offset,
2555 GST_TIME_ARGS (entry->ts), entry->stream_nr);
2558 /* update position */
2559 pos += GST_ROUND_UP_2 (size);
2560 if (G_UNLIKELY (pos > length)) {
2561 GST_WARNING_OBJECT (avi,
2562 "Stopping index lookup since we are further than EOF");
2567 /* FIXME: why is this disabled */
2569 while (gst_avi_demux_sync (avi, &tag, TRUE)) {
2570 guint stream_nr = CHUNKID_TO_STREAMNR (tag);
2572 GstFormat format = GST_FORMAT_TIME;
2574 if (stream_nr >= avi->num_streams)
2576 stream = &avi->stream[stream_nr];
2578 /* get chunk size */
2579 if (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8)
2583 entry->index_nr = index_size++;
2584 entry->stream_nr = stream_nr;
2585 entry->flags = GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME;
2586 entry->offset = gst_bytestream_tell (riff->bs) + 8 - avi->index_offset;
2587 entry->size = GST_READ_UINT32_LE (&data[4]);
2590 if (stream->is_vbr) {
2592 entry->ts = avi_stream_convert_frames_to_time_unchecked (stream,
2593 stream->total_frames);
2594 entry->dur = avi_stream_convert_frames_to_time_unchecked (stream,
2595 stream->total_frames + 1);
2597 /* constant rate stream */
2598 entry->ts = avi_stream_convert_bytes_to_time_unchecked (stream,
2599 stream->total_bytes);
2600 entry->dur = avi_stream_convert_bytes_to_time_unchecked (stream,
2601 stream->total_bytes + entry->size);
2603 entry->dur -= entry->ts;
2605 /* stream position */
2606 entry->bytes_before = stream->total_bytes;
2607 stream->total_bytes += entry->size;
2608 entry->frames_before = stream->total_frames;
2609 stream->total_frames++;
2611 list = g_list_prepend (list, entry);
2612 GST_DEBUG_OBJECT (avi, "Added index entry %d (in stream: %d), offset %"
2613 G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT " for stream %d",
2614 index_size - 1, entry->frames_before, entry->offset,
2615 GST_TIME_ARGS (entry->ts), entry->stream_nr);
2618 if (!gst_avi_demux_skip (avi, TRUE))
2622 if (!(event = gst_riff_read_seek (riff, pos))) {
2626 gst_event_unref (event);
2630 GST_DEBUG_OBJECT (avi, "index created, %d items", index_size);
2632 *index = g_list_concat (*index, g_list_reverse (list));
2638 * gst_avi_demux_massage_index:
2639 * @avi: calling element (used for debugging/errors).
2641 * We're going to go over each entry in the index and finetune
2642 * some things we don't like about AVI. For example, a single
2643 * chunk might be too long. Also, individual streams might be
2644 * out-of-sync. In the first case, we cut the chunk in several
2645 * smaller pieces. In the second case, we re-order chunk reading
2646 * order. The end result should be a smoother playing AVI.
2649 gst_avi_demux_massage_index (GstAviDemux * avi,
2650 GList * list, GList * alloc_list)
2652 gst_avi_index_entry *entry;
2653 avi_stream_context *stream;
2656 gint64 delay = G_GINT64_CONSTANT (0);
2658 GST_LOG_OBJECT (avi, "Starting index massage, nr_entries = %d",
2659 list ? g_list_length (list) : 0);
2662 #ifndef GST_DISABLE_GST_DEBUG
2663 guint num_added_total = 0;
2664 guint num_per_stream[GST_AVI_DEMUX_MAX_STREAMS] = { 0, };
2666 GST_LOG_OBJECT (avi,
2667 "I'm now going to cut large chunks into smaller pieces");
2669 /* cut chunks in small (seekable) pieces
2670 * FIXME: this should be a property where a value of
2671 * GST_CLOCK_TIME_NONE would disable the chunking
2673 #define MAX_DURATION (GST_SECOND / 2)
2674 for (i = 0; i < avi->num_streams; i++) {
2675 /* only chop streams that have exactly *one* chunk */
2676 if (avi->stream[i].total_frames != 1)
2679 for (node = list; node != NULL; node = node->next) {
2682 if (entry->stream_nr != i)
2685 /* check for max duration of a single buffer. I suppose that
2686 * the allocation of index entries could be improved. */
2687 stream = &avi->stream[entry->stream_nr];
2688 if (entry->dur > MAX_DURATION
2689 && stream->strh->type == GST_RIFF_FCC_auds) {
2691 gst_avi_index_entry *entries;
2692 guint old_size, num_added;
2695 /* cut in 1/10th of a second */
2696 ideal_size = stream->strf.auds->av_bps / 10;
2698 /* ensure chunk size is multiple of blockalign */
2699 if (stream->strf.auds->blockalign > 1)
2700 ideal_size -= ideal_size % stream->strf.auds->blockalign;
2703 old_size = entry->size;
2704 num_added = (entry->size - 1) / ideal_size;
2705 avi->index_size += num_added;
2706 entries = g_malloc (sizeof (gst_avi_index_entry) * num_added);
2707 alloc_list = g_list_prepend (alloc_list, entries);
2708 for (node2 = node->next; node2 != NULL; node2 = node2->next) {
2709 gst_avi_index_entry *entry2 = node2->data;
2711 entry2->index_nr += num_added;
2712 if (entry2->stream_nr == entry->stream_nr)
2713 entry2->frames_before += num_added;
2716 /* new sized index chunks */
2717 for (i = 0; i < num_added + 1; i++) {
2718 gst_avi_index_entry *entry2;
2723 entry2 = &entries[i - 1];
2724 list = g_list_insert_before (list, node->next, entry2);
2727 memcpy (entry2, entry, sizeof (gst_avi_index_entry));
2730 if (old_size >= ideal_size) {
2731 entry2->size = ideal_size;
2732 old_size -= ideal_size;
2734 entry2->size = old_size;
2737 entry2->dur = GST_SECOND * entry2->size / stream->strf.auds->av_bps;
2740 entry2->ts += entry->dur;
2741 entry2->offset += entry->size;
2742 entry2->bytes_before += entry->size;
2743 entry2->frames_before++;
2746 #ifndef GST_DISABLE_GST_DEBUG
2747 num_added_total += num_added;
2752 #ifndef GST_DISABLE_GST_DEBUG
2753 if (num_added_total)
2754 GST_LOG ("added %u new index entries", num_added_total);
2757 GST_LOG_OBJECT (avi, "I'm now going to reorder the index entries for time");
2759 /* re-order for time */
2760 list = g_list_sort (list, (GCompareFunc) sort);
2762 /* make a continous array out of the list */
2763 avi->index_size = g_list_length (list);
2764 avi->index_entries = g_try_new (gst_avi_index_entry, avi->index_size);
2765 if (!avi->index_entries)
2768 entry = (gst_avi_index_entry *) (list->data);
2771 GST_LOG_OBJECT (avi,
2772 "Building index array, nr_entries = %d (time offset = %"
2773 GST_TIME_FORMAT, avi->index_size, GST_TIME_ARGS (delay));
2775 for (i = 0, node = list; node != NULL; node = node->next, i++) {
2777 entry->index_nr = i;
2779 memcpy (&avi->index_entries[i], entry, sizeof (gst_avi_index_entry));
2780 #ifndef GST_DISABLE_GST_DEBUG
2781 num_per_stream[entry->stream_nr]++;
2784 GST_LOG_OBJECT (avi, "Sorted index entry %3d for stream %d of size %6u"
2785 " at offset %7" G_GUINT64_FORMAT ", time %" GST_TIME_FORMAT
2786 " dur %" GST_TIME_FORMAT,
2787 avi->index_entries[i].index_nr, entry->stream_nr, entry->size,
2788 entry->offset, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur));
2791 for (i = 0; i < avi->num_streams; i++) {
2792 stream = &avi->stream[i];
2793 stream->idx_duration -= delay;
2796 #ifndef GST_DISABLE_GST_DEBUG
2798 gchar str[GST_AVI_DEMUX_MAX_STREAMS * (1 + 6 + 2)];
2801 for (i = 0; i < avi->num_streams; i++) {
2802 if (!avi->stream[i].pad)
2804 pad_name = GST_OBJECT_NAME (avi->stream[i].pad);
2805 sprintf (&str[i * (1 + 6 + 2)], " %6u %c", num_per_stream[i],
2808 GST_LOG_OBJECT (avi, "indizies per stream:%20s", str);
2812 GST_LOG_OBJECT (avi, "Freeing original index list");
2813 /* all the node->data in list point to alloc_list chunks */
2818 g_list_foreach (alloc_list, (GFunc) g_free, NULL);
2819 g_list_free (alloc_list);
2821 #ifndef GST_DISABLE_GST_DEBUG
2822 for (i = 0; i < avi->num_streams; i++) {
2823 GST_LOG_OBJECT (avi, "Stream %d, %d frames, %8" G_GUINT64_FORMAT " bytes",
2824 i, avi->stream[i].total_frames, avi->stream[i].total_bytes);
2828 GST_LOG_OBJECT (avi, "Index massaging done");
2833 GST_WARNING_OBJECT (avi, "Out of memory for %" G_GSIZE_FORMAT " bytes",
2834 sizeof (gst_avi_index_entry) * avi->index_size);
2839 gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi)
2844 total = GST_CLOCK_TIME_NONE;
2846 /* all streams start at a timestamp 0 */
2847 for (stream = 0; stream < avi->num_streams; stream++) {
2848 GstClockTime duration, hduration;
2849 avi_stream_context *streamc = &avi->stream[stream];
2850 gst_riff_strh *strh = streamc->strh;
2855 /* get header duration for the stream */
2856 hduration = streamc->hdr_duration;
2858 /* index duration calculated during parsing, invariant under massage */
2859 duration = streamc->idx_duration;
2861 /* now pick a good duration */
2862 if (GST_CLOCK_TIME_IS_VALID (duration)) {
2863 /* index gave valid duration, use that */
2864 GST_INFO ("Stream %d duration according to index: %" GST_TIME_FORMAT,
2865 stream, GST_TIME_ARGS (duration));
2867 /* fall back to header info to calculate a duration */
2868 duration = hduration;
2870 /* set duration for the stream */
2871 streamc->duration = duration;
2873 /* find total duration */
2874 if (total == GST_CLOCK_TIME_NONE || duration > total)
2878 if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) {
2879 /* now update the duration for those streams where we had none */
2880 for (stream = 0; stream < avi->num_streams; stream++) {
2881 avi_stream_context *streamc = &avi->stream[stream];
2883 if (!GST_CLOCK_TIME_IS_VALID (streamc->duration)
2884 || streamc->duration == 0) {
2885 streamc->duration = total;
2887 GST_INFO ("Stream %d duration according to total: %" GST_TIME_FORMAT,
2888 stream, GST_TIME_ARGS (total));
2893 /* and set the total duration in the segment. */
2894 GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT,
2895 GST_TIME_ARGS (total));
2897 gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total);
2901 gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event)
2903 gboolean result = FALSE;
2906 GST_DEBUG_OBJECT (avi, "sending %s event to %d streams",
2907 GST_EVENT_TYPE_NAME (event), avi->num_streams);
2909 if (avi->num_streams) {
2910 for (i = 0; i < avi->num_streams; i++) {
2911 avi_stream_context *stream = &avi->stream[i];
2914 if (gst_pad_push_event (stream->pad, gst_event_ref (event)))
2919 gst_event_unref (event);
2924 * Read AVI headers when streaming
2926 static GstFlowReturn
2927 gst_avi_demux_stream_header_push (GstAviDemux * avi)
2929 GstFlowReturn ret = GST_FLOW_OK;
2934 GstBuffer *buf = NULL, *sub = NULL;
2938 GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state);
2940 switch (avi->header_state) {
2941 case GST_AVI_DEMUX_HEADER_TAG_LIST:
2942 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
2943 avi->offset += 8 + ((size + 1) & ~1);
2944 if (tag != GST_RIFF_TAG_LIST)
2945 goto header_no_list;
2947 gst_adapter_flush (avi->adapter, 8);
2948 /* Find the 'hdrl' LIST tag */
2949 GST_DEBUG ("Reading %d bytes", size);
2950 buf = gst_adapter_take_buffer (avi->adapter, size);
2952 if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl)
2953 goto header_no_hdrl;
2955 GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk");
2957 /* the hdrl starts with a 'avih' header */
2958 if (!gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag, &sub))
2959 goto header_no_avih;
2961 if (tag != GST_RIFF_TAG_avih)
2962 goto header_no_avih;
2964 if (!gst_avi_demux_parse_avih (GST_ELEMENT (avi), sub, &avi->avih))
2965 goto header_wrong_avih;
2967 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header");
2969 /* now, read the elements from the header until the end */
2970 while (gst_riff_parse_chunk (GST_ELEMENT (avi), buf, &offset, &tag,
2972 /* sub can be NULL on empty tags */
2977 case GST_RIFF_TAG_LIST:
2978 if (GST_BUFFER_SIZE (sub) < 4)
2981 switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) {
2982 case GST_RIFF_LIST_strl:
2983 if (!(gst_avi_demux_parse_stream (avi, sub))) {
2985 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
2986 ("failed to parse stream, ignoring"));
2991 case GST_RIFF_LIST_odml:
2992 gst_avi_demux_parse_odml (avi, sub);
2996 GST_WARNING_OBJECT (avi,
2997 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
2998 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA
3001 case GST_RIFF_TAG_JUNK:
3006 GST_WARNING_OBJECT (avi,
3007 "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header",
3008 offset, GST_FOURCC_ARGS (tag));
3010 case GST_RIFF_TAG_JUNK:
3012 /* move to next chunk */
3014 gst_buffer_unref (sub);
3019 gst_buffer_unref (buf);
3020 GST_DEBUG ("elements parsed");
3022 /* check parsed streams */
3023 if (avi->num_streams == 0) {
3025 } else if (avi->num_streams != avi->avih->streams) {
3026 GST_WARNING_OBJECT (avi,
3027 "Stream header mentioned %d streams, but %d available",
3028 avi->avih->streams, avi->num_streams);
3030 GST_DEBUG ("Get junk and info next");
3031 avi->header_state = GST_AVI_DEMUX_HEADER_INFO;
3033 /* Need more data */
3037 case GST_AVI_DEMUX_HEADER_INFO:
3038 GST_DEBUG_OBJECT (avi, "skipping junk between header and data ...");
3040 if (gst_adapter_available (avi->adapter) < 12)
3043 data = gst_adapter_peek (avi->adapter, 12);
3044 tag = GST_READ_UINT32_LE (data);
3045 size = GST_READ_UINT32_LE (data + 4);
3046 ltag = GST_READ_UINT32_LE (data + 8);
3048 if (tag == GST_RIFF_TAG_LIST) {
3050 case GST_RIFF_LIST_movi:
3051 gst_adapter_flush (avi->adapter, 12);
3054 case GST_RIFF_LIST_INFO:
3055 GST_DEBUG ("Found INFO chunk");
3056 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3057 GST_DEBUG ("got size %d", size);
3059 gst_adapter_flush (avi->adapter, 12);
3061 buf = gst_adapter_take_buffer (avi->adapter, size - 4);
3062 gst_riff_parse_info (GST_ELEMENT (avi), buf,
3064 gst_buffer_unref (buf);
3066 avi->offset += ((size + 1) & ~1) - 4;
3068 GST_DEBUG ("skipping INFO LIST prefix");
3071 /* Need more data */
3076 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3077 avi->offset += 8 + ((size + 1) & ~1);
3078 gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
3079 // ??? goto iterate; ???
3081 /* Need more data */
3087 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
3088 avi->offset += 8 + ((size + 1) & ~1);
3089 gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
3092 /* Need more data */
3099 GST_WARNING ("unhandled header state: %d", avi->header_state);
3104 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3105 avi->num_streams, avi->stream[0].indexes);
3107 GST_DEBUG ("Found movi chunk. Starting to stream data");
3108 avi->state = GST_AVI_DEMUX_MOVI;
3111 /*GList *index = NULL, *alloc = NULL; */
3113 /* ######################## this need to be integrated with the state */
3114 /* create or read stream index (for seeking) */
3115 if (avi->stream[0].indexes != NULL) {
3116 gst_avi_demux_read_subindexes_push (avi, &index, &alloc);
3119 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
3120 gst_avi_demux_stream_index (avi, &index, &alloc);
3122 /* some indexes are incomplete, continue streaming from there */
3124 gst_avi_demux_stream_scan (avi, &index, &alloc);
3127 /* this is a fatal error */
3131 if (!gst_avi_demux_massage_index (avi, index, alloc))
3134 gst_avi_demux_calculate_durations_from_index (avi);
3135 /* ######################## */
3138 /* create initial NEWSEGMENT event */
3139 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3140 stop = avi->segment.duration;
3142 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3144 if (avi->seek_event)
3145 gst_event_unref (avi->seek_event);
3146 avi->seek_event = gst_event_new_new_segment
3147 (FALSE, avi->segment.rate, GST_FORMAT_TIME,
3148 avi->segment.start, stop, avi->segment.start);
3150 /* at this point we know all the streams and we can signal the no more
3152 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3153 gst_element_no_more_pads (GST_ELEMENT (avi));
3160 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3161 return GST_FLOW_ERROR;
3165 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3166 ("Invalid AVI header (no LIST at start): %"
3167 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3168 return GST_FLOW_ERROR;
3172 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3173 ("Invalid AVI header (no hdrl at start): %"
3174 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3175 gst_buffer_unref (buf);
3176 return GST_FLOW_ERROR;
3180 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3181 ("Invalid AVI header (no avih at start): %"
3182 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3184 gst_buffer_unref (sub);
3186 gst_buffer_unref (buf);
3187 return GST_FLOW_ERROR;
3191 gst_buffer_unref (buf);
3192 return GST_FLOW_ERROR;
3197 * Read full AVI headers.
3199 static GstFlowReturn
3200 gst_avi_demux_stream_header_pull (GstAviDemux * avi)
3203 GstBuffer *buf, *sub = NULL;
3205 GList *index = NULL, *alloc = NULL;
3208 GstElement *element = GST_ELEMENT_CAST (avi);
3210 /* the header consists of a 'hdrl' LIST tag */
3211 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3212 if (res != GST_FLOW_OK)
3213 goto pull_range_failed;
3214 else if (tag != GST_RIFF_TAG_LIST)
3216 else if (GST_BUFFER_SIZE (buf) < 4)
3219 GST_DEBUG_OBJECT (avi, "parsing headers");
3221 /* Find the 'hdrl' LIST tag */
3222 while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) {
3223 GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT,
3224 GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf))));
3227 gst_buffer_unref (buf);
3229 /* read new chunk */
3230 res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf);
3231 if (res != GST_FLOW_OK)
3232 goto pull_range_failed;
3233 else if (tag != GST_RIFF_TAG_LIST)
3235 else if (GST_BUFFER_SIZE (buf) < 4)
3239 GST_DEBUG_OBJECT (avi, "hdrl LIST tag found");
3241 /* the hdrl starts with a 'avih' header */
3242 if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub))
3244 else if (tag != GST_RIFF_TAG_avih)
3246 else if (!gst_avi_demux_parse_avih (element, sub, &avi->avih))
3249 GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header");
3251 /* now, read the elements from the header until the end */
3252 while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) {
3253 /* sub can be NULL on empty tags */
3258 case GST_RIFF_TAG_LIST:
3263 if (GST_BUFFER_SIZE (sub) < 4)
3266 data = GST_BUFFER_DATA (sub);
3267 fourcc = GST_READ_UINT32_LE (data);
3270 case GST_RIFF_LIST_strl:
3271 if (!(gst_avi_demux_parse_stream (avi, sub))) {
3272 GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL),
3273 ("faile to parse stream, ignoring"));
3278 case GST_RIFF_LIST_odml:
3279 gst_avi_demux_parse_odml (avi, sub);
3283 GST_WARNING_OBJECT (avi,
3284 "Unknown list %" GST_FOURCC_FORMAT " in AVI header",
3285 GST_FOURCC_ARGS (fourcc));
3286 GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub),
3287 GST_BUFFER_SIZE (sub));
3289 case GST_RIFF_TAG_JUNK:
3295 GST_WARNING_OBJECT (avi,
3296 "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d",
3297 GST_FOURCC_ARGS (tag), offset);
3298 GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub),
3299 GST_BUFFER_SIZE (sub));
3301 case GST_RIFF_TAG_JUNK:
3304 gst_buffer_unref (sub);
3309 gst_buffer_unref (buf);
3310 GST_DEBUG ("elements parsed");
3312 /* check parsed streams */
3313 if (avi->num_streams == 0)
3315 else if (avi->num_streams != avi->avih->streams) {
3316 GST_WARNING_OBJECT (avi,
3317 "Stream header mentioned %d streams, but %d available",
3318 avi->avih->streams, avi->num_streams);
3321 GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%"
3322 G_GUINT64_FORMAT, avi->offset);
3324 /* Now, find the data (i.e. skip all junk between header and data) */
3329 res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf);
3330 if (res != GST_FLOW_OK) {
3331 GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags");
3332 goto pull_range_failed;
3333 } else if (GST_BUFFER_SIZE (buf) < 12) {
3334 GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes",
3335 GST_BUFFER_SIZE (buf));
3336 gst_buffer_unref (buf);
3337 return GST_FLOW_ERROR;
3340 tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
3341 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
3342 ltag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 8);
3344 GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u",
3345 GST_FOURCC_ARGS (tag), size);
3346 GST_MEMDUMP ("Tag content", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
3347 gst_buffer_unref (buf);
3350 case GST_RIFF_TAG_LIST:{
3352 case GST_RIFF_LIST_movi:
3353 GST_DEBUG_OBJECT (avi,
3354 "Reached the 'movi' tag, we're done with skipping");
3356 case GST_RIFF_LIST_INFO:
3358 gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag,
3360 if (res != GST_FLOW_OK) {
3361 GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk");
3362 goto pull_range_failed;
3364 GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf));
3366 GST_DEBUG ("skipping INFO LIST prefix");
3367 avi->offset += (4 - GST_ROUND_UP_2 (size));
3368 gst_buffer_unref (buf);
3372 sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4);
3373 gst_riff_parse_info (element, sub, &avi->globaltags);
3375 gst_buffer_unref (sub);
3378 gst_buffer_unref (buf);
3379 /* gst_riff_read_chunk() has already advanced avi->offset */
3382 GST_WARNING_OBJECT (avi,
3383 "Skipping unknown list tag %" GST_FOURCC_FORMAT,
3384 GST_FOURCC_ARGS (ltag));
3385 avi->offset += 8 + ((size + 1) & ~1);
3391 GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT,
3392 GST_FOURCC_ARGS (tag));
3394 case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'):
3395 case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'):
3396 avi->offset += 8 + ((size + 1) & ~1);
3402 GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)",
3403 avi->num_streams, avi->stream[0].indexes);
3405 /* create or read stream index (for seeking) */
3406 if (avi->stream[0].indexes != NULL) {
3407 /* we read a super index already (gst_avi_demux_parse_superindex() ) */
3408 gst_avi_demux_read_subindexes_pull (avi, &index, &alloc);
3411 if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) {
3412 gst_avi_demux_stream_index (avi, &index, &alloc);
3414 /* some indexes are incomplete, continue streaming from there */
3416 gst_avi_demux_stream_scan (avi, &index, &alloc);
3419 /* this is a fatal error */
3423 if (!gst_avi_demux_massage_index (avi, index, alloc))
3426 gst_avi_demux_calculate_durations_from_index (avi);
3428 /* create initial NEWSEGMENT event */
3429 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3430 stop = avi->segment.duration;
3432 GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop);
3434 if (avi->seek_event)
3435 gst_event_unref (avi->seek_event);
3436 avi->seek_event = gst_event_new_new_segment
3437 (FALSE, avi->segment.rate, GST_FORMAT_TIME,
3438 avi->segment.start, stop, avi->segment.start);
3440 /* at this point we know all the streams and we can signal the no more
3442 GST_DEBUG_OBJECT (avi, "signaling no more pads");
3443 gst_element_no_more_pads (GST_ELEMENT_CAST (avi));
3450 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3451 ("Invalid AVI header (no LIST at start): %"
3452 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3453 gst_buffer_unref (buf);
3454 return GST_FLOW_ERROR;
3458 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3459 ("Invalid AVI header (no hdrl at start): %"
3460 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3461 gst_buffer_unref (buf);
3462 return GST_FLOW_ERROR;
3466 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3467 ("Invalid AVI header (no avih at start): %"
3468 GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag)));
3470 gst_buffer_unref (sub);
3471 gst_buffer_unref (buf);
3472 return GST_FLOW_ERROR;
3476 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3477 ("Invalid AVI header (cannot parse avih at start)"));
3478 gst_buffer_unref (buf);
3479 return GST_FLOW_ERROR;
3483 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found"));
3484 return GST_FLOW_ERROR;
3488 GST_WARNING ("file without or too big index");
3489 g_list_free (index);
3490 g_list_foreach (alloc, (GFunc) g_free, NULL);
3491 g_list_free (alloc);
3493 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3494 ("Could not get/create index"));
3495 return GST_FLOW_ERROR;
3499 GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL),
3500 ("pull_range flow reading header: %s", gst_flow_get_name (res)));
3501 return GST_FLOW_ERROR;
3506 * Do the actual seeking.
3509 gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment)
3511 GstClockTime seek_time;
3513 gst_avi_index_entry *entry, *kentry;
3516 seek_time = segment->last_stop;
3517 keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT);
3519 /* FIXME: if we seek in an openDML file, we will have multiple
3520 * primary levels. Seeking in between those will cause havoc. */
3522 /* save old position so we can see if we must mark a discont. */
3523 old_entry = avi->current_entry;
3525 /* get the entry for the requested position, which is always in last_stop.
3526 * we search the index entry for stream 0, since all entries are sorted by
3527 * time and stream we automagically are positioned for the other streams as
3528 * well. FIXME, this code assumes the main stream with keyframes is stream 0,
3529 * which is mostly correct... */
3530 if (!(entry = gst_avi_demux_index_entry_for_time (avi, 0, seek_time)))
3533 GST_DEBUG_OBJECT (avi,
3534 "Got requested entry %d [stream:%d / ts:%" GST_TIME_FORMAT
3535 " / duration:%" GST_TIME_FORMAT "]", entry->index_nr,
3536 entry->stream_nr, GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (entry->dur));
3538 /* check if we are already on a keyframe */
3539 if (!(entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)) {
3540 /* now go to the previous keyframe, this is where we should start
3542 if (!(kentry = gst_avi_demux_index_prev (avi, 0, entry->index_nr,
3543 GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME))) {
3547 /* we were on a keyframe */
3551 GST_DEBUG_OBJECT (avi,
3552 "Got keyframe entry %d [stream:%d / ts:%" GST_TIME_FORMAT
3553 " / duration:%" GST_TIME_FORMAT "]", kentry->index_nr,
3554 entry->stream_nr, GST_TIME_ARGS (kentry->ts),
3555 GST_TIME_ARGS (kentry->dur));
3557 /* we must start decoding at the keyframe */
3558 avi->current_entry = kentry->index_nr;
3560 if (segment->rate < 0.0) {
3561 gst_avi_index_entry *next_keyframe;
3563 /* Because we don't know the frame order we need to push from the prev keyframe
3564 * to the next keyframe. If there is a smart decoder downstream he will notice
3565 * that there are too many encoded frames send and return UNEXPECTED when there
3566 * are enough decoded frames to fill the segment.
3569 gst_avi_demux_index_next (avi, 0, kentry->index_nr,
3570 GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME);
3572 next_keyframe = gst_avi_demux_index_last (avi, 0);
3574 avi->reverse_start_index = kentry->index_nr;
3575 avi->reverse_stop_index = next_keyframe->index_nr;
3577 GST_DEBUG_OBJECT (avi, "reverse seek: start idx (%d) and stop idx (%d)",
3578 avi->reverse_start_index, avi->reverse_stop_index);
3582 /* when seeking to a keyframe, we update the result seek time
3583 * to the time of the keyframe. */
3584 seek_time = avi->index_entries[avi->current_entry].ts;
3588 /* if we changed position, mark a DISCONT on all streams */
3589 if (avi->current_entry != old_entry) {
3592 for (i = 0; i < avi->num_streams; i++) {
3593 avi->stream[i].discont = TRUE;
3597 GST_DEBUG_OBJECT (avi, "seek: %" GST_TIME_FORMAT
3598 " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe);
3600 /* the seek time is also the last_stop and stream time */
3601 segment->last_stop = seek_time;
3602 segment->time = seek_time;
3608 /* we could not find an entry for the given time */
3609 GST_WARNING_OBJECT (avi,
3610 "Couldn't find AviIndexEntry for time:%" GST_TIME_FORMAT,
3611 GST_TIME_ARGS (seek_time));
3612 if (avi->current_entry >= avi->index_size && avi->index_size > 0)
3613 avi->current_entry = avi->index_size - 1;
3620 * Handle seek event.
3623 gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event)
3628 GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
3632 GstSegment seeksegment = { 0, };
3635 GST_DEBUG_OBJECT (avi, "doing seek with event");
3637 gst_event_parse_seek (event, &rate, &format, &flags,
3638 &cur_type, &cur, &stop_type, &stop);
3640 /* we have to have a format as the segment format. Try to convert
3642 if (format != GST_FORMAT_TIME) {
3643 GstFormat fmt = GST_FORMAT_TIME;
3644 gboolean res = TRUE;
3646 if (cur_type != GST_SEEK_TYPE_NONE)
3647 res = gst_pad_query_convert (pad, format, cur, &fmt, &cur);
3648 if (res && stop_type != GST_SEEK_TYPE_NONE)
3649 res = gst_pad_query_convert (pad, format, stop, &fmt, &stop);
3655 GST_DEBUG_OBJECT (avi,
3656 "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %"
3657 GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop));
3658 /* FIXME: can we do anything with rate!=1.0 */
3660 GST_DEBUG_OBJECT (avi, "doing seek without event");
3665 /* save flush flag */
3666 flush = flags & GST_SEEK_FLAG_FLUSH;
3669 GstEvent *event = gst_event_new_flush_start ();
3671 /* for a flushing seek, we send a flush_start on all pads. This will
3672 * eventually stop streaming with a WRONG_STATE. We can thus eventually
3673 * take the STREAM_LOCK. */
3674 GST_DEBUG_OBJECT (avi, "sending flush start");
3675 gst_avi_demux_push_event (avi, gst_event_ref (event));
3676 gst_pad_push_event (avi->sinkpad, event);
3678 /* a non-flushing seek, we PAUSE the task so that we can take the
3680 GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task");
3681 gst_pad_pause_task (avi->sinkpad);
3684 /* wait for streaming to stop */
3685 GST_DEBUG_OBJECT (avi, "wait for streaming to stop");
3686 GST_PAD_STREAM_LOCK (avi->sinkpad);
3688 /* copy segment, we need this because we still need the old
3689 * segment when we close the current segment. */
3690 memcpy (&seeksegment, &avi->segment, sizeof (GstSegment));
3693 GST_DEBUG_OBJECT (avi, "configuring seek");
3694 gst_segment_set_seek (&seeksegment, rate, format, flags,
3695 cur_type, cur, stop_type, stop, &update);
3698 /* do the seek, seeksegment.last_stop contains the new position, this
3699 * actually never fails. */
3700 gst_avi_demux_do_seek (avi, &seeksegment);
3705 GST_DEBUG_OBJECT (avi, "sending flush stop");
3706 gst_avi_demux_push_event (avi, gst_event_new_flush_stop ());
3707 gst_pad_push_event (avi->sinkpad, gst_event_new_flush_stop ());
3708 /* reset the last flow and mark discont, FLUSH is always DISCONT */
3709 for (i = 0; i < avi->num_streams; i++) {
3710 avi->stream[i].last_flow = GST_FLOW_OK;
3711 avi->stream[i].discont = TRUE;
3713 } else if (avi->segment_running) {
3716 /* we are running the current segment and doing a non-flushing seek,
3717 * close the segment first based on the last_stop. */
3718 GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT
3719 " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop);
3720 seg = gst_event_new_new_segment (TRUE,
3721 avi->segment.rate, avi->segment.format,
3722 avi->segment.start, avi->segment.last_stop, avi->segment.time);
3723 gst_avi_demux_push_event (avi, seg);
3726 /* now update the real segment info */
3727 memcpy (&avi->segment, &seeksegment, sizeof (GstSegment));
3729 /* post the SEGMENT_START message when we do segmented playback */
3730 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
3731 gst_element_post_message (GST_ELEMENT (avi),
3732 gst_message_new_segment_start (GST_OBJECT (avi),
3733 avi->segment.format, avi->segment.last_stop));
3736 /* prepare for streaming again */
3737 if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE)
3738 stop = avi->segment.duration;
3740 /* queue the segment event for the streaming thread. */
3741 if (avi->seek_event)
3742 gst_event_unref (avi->seek_event);
3743 if (avi->segment.rate > 0.0) {
3744 avi->seek_event = gst_event_new_new_segment (FALSE,
3745 avi->segment.rate, avi->segment.format,
3746 avi->segment.last_stop, stop, avi->segment.time);
3748 avi->seek_event = gst_event_new_new_segment (FALSE,
3749 avi->segment.rate, avi->segment.format,
3750 avi->segment.start, avi->segment.last_stop, avi->segment.start);
3753 if (!avi->streaming) {
3754 avi->segment_running = TRUE;
3755 gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop,
3758 GST_PAD_STREAM_UNLOCK (avi->sinkpad);
3765 GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted.");
3771 * Helper for gst_avi_demux_invert()
3774 swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
3776 memcpy (tmp, d1, bytes);
3777 memcpy (d1, d2, bytes);
3778 memcpy (d2, tmp, bytes);
3782 #define gst_avi_demux_is_uncompressed(fourcc) \
3783 (fourcc == GST_RIFF_DIB || \
3784 fourcc == GST_RIFF_rgb || \
3785 fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)
3788 * Invert DIB buffers... Takes existing buffer and
3789 * returns either the buffer or a new one (with old
3790 * one dereferenced).
3791 * FIXME: can't we preallocate tmp? and remember stride, bpp?
3794 gst_avi_demux_invert (avi_stream_context * stream, GstBuffer * buf)
3801 if (stream->strh->type != GST_RIFF_FCC_vids)
3804 if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) {
3805 return buf; /* Ignore non DIB buffers */
3808 s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0);
3809 if (!gst_structure_get_int (s, "bpp", &bpp)) {
3810 GST_WARNING ("Failed to retrieve depth from caps");
3814 if (stream->strf.vids == NULL) {
3815 GST_WARNING ("Failed to retrieve vids for stream");
3819 h = stream->strf.vids->height;
3820 w = stream->strf.vids->width;
3821 stride = w * (bpp / 8);
3823 buf = gst_buffer_make_writable (buf);
3824 if (GST_BUFFER_SIZE (buf) < (stride * h)) {
3825 GST_WARNING ("Buffer is smaller than reported Width x Height x Depth");
3829 tmp = g_malloc (stride);
3831 for (y = 0; y < h / 2; y++) {
3832 swap_line (GST_BUFFER_DATA (buf) + stride * y,
3833 GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride);
3842 * Returns the aggregated GstFlowReturn.
3844 static GstFlowReturn
3845 gst_avi_demux_combine_flows (GstAviDemux * avi, avi_stream_context * stream,
3850 /* store the value */
3851 stream->last_flow = ret;
3853 /* any other error that is not-linked can be returned right away */
3854 if (G_UNLIKELY (ret != GST_FLOW_NOT_LINKED))
3857 /* only return NOT_LINKED if all other pads returned NOT_LINKED */
3858 for (i = 0; i < avi->num_streams; i++) {
3859 avi_stream_context *ostream = &avi->stream[i];
3861 ret = ostream->last_flow;
3862 /* some other return value (must be SUCCESS but we can return
3863 * other values as well) */
3864 if (G_UNLIKELY (ret != GST_FLOW_NOT_LINKED))
3867 /* if we get here, all other pads were unlinked and we return
3868 * NOT_LINKED then */
3870 GST_LOG_OBJECT (avi, "combined return %s", gst_flow_get_name (ret));
3875 * prepare the avi element for a reverse jump to a prev keyframe
3876 * this function will return the start entry. if the function returns
3877 * NULL there was no prev keyframe.
3879 static gst_avi_index_entry *
3880 gst_avi_demux_step_reverse (GstAviDemux * avi)
3882 gst_avi_index_entry *entry;
3885 avi->reverse_stop_index = avi->reverse_start_index;
3887 gst_avi_demux_index_prev (avi, 0, avi->reverse_stop_index,
3888 GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME);
3890 GST_DEBUG_OBJECT (avi, "no valid index entry found index %d",
3891 avi->reverse_stop_index);
3894 avi->current_entry = avi->reverse_start_index = entry->index_nr;
3895 GST_DEBUG_OBJECT (avi,
3896 "reverse playback jump: start idx (%d) and stop idx (%d)",
3897 avi->reverse_start_index, avi->reverse_stop_index);
3898 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, entry->ts);
3899 for (i = 0; i < avi->num_streams; i++) {
3900 avi->stream[i].last_flow = GST_FLOW_OK;
3901 avi->stream[i].discont = TRUE;
3907 * Read data from one index entry
3909 static GstFlowReturn
3910 gst_avi_demux_process_next_entry (GstAviDemux * avi)
3912 GstFlowReturn res = GST_FLOW_OK;
3913 gboolean processed = FALSE;
3914 avi_stream_context *stream;
3915 gst_avi_index_entry *entry;
3919 /* see if we are at the end */
3920 if ((avi->segment.rate > 0 && avi->current_entry >= avi->index_size))
3923 /* get next entry, this will work as we checked for the index size above */
3924 entry = &avi->index_entries[avi->current_entry++];
3926 /* check for reverse playback */
3927 if (avi->segment.rate < 0 && avi->current_entry > avi->reverse_stop_index) {
3928 GST_LOG_OBJECT (avi, "stop_index %d reached", avi->reverse_stop_index);
3930 /* check if we have pushed enough data for this segment */
3931 if (avi->reverse_start_index == 0)
3932 goto eos_reverse_zero;
3933 if (avi->index_entries[avi->reverse_start_index].ts < avi->segment.start)
3934 goto eos_reverse_segment;
3936 if (!(entry = gst_avi_demux_step_reverse (avi)))
3939 avi->current_entry++;
3942 /* see if we have a valid stream, ignore if not
3943 * FIXME: can't we check this when building the index?
3944 * we check it in _parse_index(), _stream_scan()
3946 if (entry->stream_nr >= avi->num_streams) {
3947 GST_WARNING_OBJECT (avi,
3948 "Entry %d has non-existing stream nr %d",
3949 avi->current_entry - 1, entry->stream_nr);
3953 /* get stream now */
3954 stream = &avi->stream[entry->stream_nr];
3956 if (avi->segment.rate > 0.0) {
3957 /* only check this for fowards playback for now */
3958 if ((entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME)
3959 && GST_CLOCK_TIME_IS_VALID (entry->ts)
3960 && GST_CLOCK_TIME_IS_VALID (avi->segment.stop)
3961 && (entry->ts > avi->segment.stop)) {
3966 /* skip empty entries */
3967 if (entry->size == 0 || !stream->pad) {
3968 GST_DEBUG_OBJECT (avi, "Skipping entry %d (%d, %p)",
3969 avi->current_entry - 1, entry->size, stream->pad);
3973 GST_LOG ("reading buffer (size=%d) from stream %d at current pos %"
3974 G_GUINT64_FORMAT " (%llx)", entry->size, entry->stream_nr,
3975 avi->index_offset + entry->offset, avi->index_offset + entry->offset);
3977 /* pull in the data */
3978 res = gst_pad_pull_range (avi->sinkpad, entry->offset +
3979 avi->index_offset, entry->size, &buf);
3980 if (res != GST_FLOW_OK)
3983 /* check for short buffers, this is EOS as well */
3984 if (GST_BUFFER_SIZE (buf) < entry->size)
3987 /* invert the picture if needed */
3988 buf = gst_avi_demux_invert (stream, buf);
3990 /* mark non-keyframes */
3991 if (!(entry->flags & GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME))
3992 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
3994 GST_BUFFER_TIMESTAMP (buf) = entry->ts;
3995 GST_BUFFER_DURATION (buf) = entry->dur;
3996 if (stream->strh->type == GST_RIFF_FCC_vids) {
3997 if (stream->current_frame >= 0)
3998 GST_BUFFER_OFFSET (buf) = stream->current_frame;
4001 GstFormat fmt = GST_FORMAT_DEFAULT;
4003 if (gst_pad_query_convert (stream->pad, GST_FORMAT_TIME, entry->ts,
4005 GST_BUFFER_OFFSET (buf) = framenum;
4007 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4010 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4011 GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE;
4012 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4014 GST_DEBUG_OBJECT (avi, "Pushing buffer of size %d, offset %"
4015 G_GUINT64_FORMAT " and time %"
4016 GST_TIME_FORMAT " on pad %s",
4017 GST_BUFFER_SIZE (buf), GST_BUFFER_OFFSET (buf),
4018 GST_TIME_ARGS (entry->ts), GST_PAD_NAME (stream->pad));
4020 /* update current position in the segment */
4021 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, entry->ts);
4023 /* mark discont when pending */
4024 if (stream->discont) {
4025 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4026 stream->discont = FALSE;
4029 res = gst_pad_push (stream->pad, buf);
4031 /* mark as processed, we increment the frame and byte counters then
4032 * leave the while loop and return the GstFlowReturn */
4034 GST_DEBUG_OBJECT (avi, "Processed buffer %d: %s", entry->index_nr,
4035 gst_flow_get_name (res));
4037 if (avi->segment.rate < 0
4038 && entry->ts > avi->segment.stop && res == GST_FLOW_UNEXPECTED) {
4039 /* In reverse playback we can get a GST_FLOW_UNEXPECTED when
4040 * we are at the end of the segment, so we just need to jump
4041 * back to the previous section.
4043 GST_DEBUG_OBJECT (avi, "downstream has reached end of segment");
4045 if (!(entry = gst_avi_demux_step_reverse (avi)))
4050 stream->current_frame = entry->frames_before;
4051 stream->current_byte = entry->bytes_before;
4057 res = gst_avi_demux_combine_flows (avi, stream, res);
4060 stream->current_frame = entry->frames_before + 1;
4061 stream->current_byte = entry->bytes_before + entry->size;
4062 } while (!processed);
4065 GST_DEBUG_OBJECT (avi, "returning %s", gst_flow_get_name (res));
4072 GST_LOG_OBJECT (avi, "Handled last index entry, setting EOS (%d > %d)",
4073 avi->current_entry, avi->index_size);
4074 /* we mark the first stream as EOS */
4075 res = GST_FLOW_UNEXPECTED;
4080 GST_LOG_OBJECT (avi, "Found keyframe after segment,"
4081 " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")",
4082 GST_TIME_ARGS (entry->ts), GST_TIME_ARGS (avi->segment.stop));
4083 res = GST_FLOW_UNEXPECTED;
4088 GST_DEBUG_OBJECT (avi, "start_index was 0, setting EOS");
4089 res = GST_FLOW_UNEXPECTED;
4092 eos_reverse_segment:
4094 GST_DEBUG_OBJECT (avi, "full segment pushed, setting EOS");
4095 res = GST_FLOW_UNEXPECTED;
4100 GST_DEBUG_OBJECT (avi,
4101 "pull range failed: pos=%" G_GUINT64_FORMAT " size=%d",
4102 entry->offset + avi->index_offset, entry->size);
4107 GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT
4108 ", only got %d/%d bytes (truncated file?)", entry->offset +
4109 avi->index_offset, GST_BUFFER_SIZE (buf), entry->size);
4110 gst_buffer_unref (buf);
4111 res = GST_FLOW_UNEXPECTED;
4117 * Read data. If we have an index it delegates to
4118 * gst_avi_demux_process_next_entry().
4120 static GstFlowReturn
4121 gst_avi_demux_stream_data (GstAviDemux * avi)
4126 GstFlowReturn res = GST_FLOW_OK;
4127 GstFormat format = GST_FORMAT_TIME;
4129 /* if we have a avi->index_entries[], we don't want to read
4130 * the stream linearly, but seek to the next ts/index_entry. */
4131 if (G_LIKELY (avi->index_entries != NULL))
4132 return gst_avi_demux_process_next_entry (avi);
4134 if (G_UNLIKELY (avi->have_eos)) {
4135 /* Clean adapter, we're done */
4136 gst_adapter_clear (avi->adapter);
4141 if (!gst_avi_demux_sync (avi, &tag, FALSE))
4145 /* Iterate until need more data, so adapter won't grow too much */
4147 if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) {
4151 GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d",
4152 GST_FOURCC_ARGS (tag), size);
4154 if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' &&
4155 ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) {
4156 GST_LOG ("Chunk ok");
4157 } else if ((tag & 0xffff) == (('x' << 8) | 'i')) {
4158 GST_DEBUG ("Found sub-index tag");
4159 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
4160 if ((size > 0) && (size != -1)) {
4161 GST_DEBUG (" skipping %d bytes for now", size);
4162 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4166 } else if (tag == GST_RIFF_TAG_JUNK) {
4167 GST_DEBUG ("JUNK chunk, skipping");
4168 } else if (tag == GST_RIFF_TAG_idx1) {
4169 GST_DEBUG ("Found index tag, stream done");
4170 avi->have_eos = TRUE;
4171 return GST_FLOW_UNEXPECTED;
4172 } else if (tag == GST_RIFF_TAG_LIST) {
4173 /* movi chunks might be grouped in rec list */
4174 if (gst_adapter_available (avi->adapter) >= 12) {
4175 GST_DEBUG ("Found LIST tag, skipping LIST header");
4176 gst_adapter_flush (avi->adapter, 12);
4180 } else if (tag == GST_RIFF_TAG_JUNK) {
4181 /* rec list might contain JUNK chunks */
4182 GST_DEBUG ("Found JUNK tag");
4183 if (gst_avi_demux_peek_chunk (avi, &tag, &size)) {
4184 if ((size > 0) && (size != -1)) {
4185 GST_DEBUG (" skipping %d bytes for now", size);
4186 gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size));
4192 GST_DEBUG ("No more stream chunks, send EOS");
4193 avi->have_eos = TRUE;
4194 return GST_FLOW_UNEXPECTED;
4197 if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) {
4198 if ((size == 0) || (size == -1))
4199 gst_adapter_flush (avi->adapter, 8);
4202 GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u",
4203 GST_FOURCC_ARGS (tag), size);
4205 stream_nr = CHUNKID_TO_STREAMNR (tag);
4207 if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) {
4209 GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")",
4210 stream_nr, GST_FOURCC_ARGS (tag));
4211 avi->offset += 8 + ((size + 1) & ~1);
4212 gst_adapter_flush (avi->adapter, 8 + ((size + 1) & ~1));
4214 avi_stream_context *stream;
4215 GstClockTime next_ts = 0;
4218 gst_adapter_flush (avi->adapter, 8);
4221 buf = gst_adapter_take_buffer (avi->adapter, ((size + 1) & ~1));
4222 /* patch the size */
4223 GST_BUFFER_SIZE (buf) = size;
4224 avi->offset += 8 + ((size + 1) & ~1);
4226 /* get time of this buffer */
4227 stream = &avi->stream[stream_nr];
4228 gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts);
4229 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4232 /* set delay (if any)
4233 if (stream->strh->init_frames == stream->current_frame &&
4235 stream->delay = next_ts;
4238 stream->current_frame++;
4239 stream->current_byte += size;
4241 if (G_UNLIKELY (!stream->pad)) {
4242 GST_WARNING ("No pad.");
4243 gst_buffer_unref (buf);
4245 GstClockTime dur_ts = 0;
4247 /* invert the picture if needed */
4248 buf = gst_avi_demux_invert (stream, buf);
4250 gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts);
4251 if (G_UNLIKELY (format != GST_FORMAT_TIME))
4254 GST_BUFFER_TIMESTAMP (buf) = next_ts;
4255 GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
4256 if (stream->strh->type == GST_RIFF_FCC_vids)
4257 GST_BUFFER_OFFSET (buf) = stream->current_frame - 1;
4259 GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE;
4261 gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad));
4262 GST_DEBUG_OBJECT (avi,
4263 "Pushing buffer with time=%" GST_TIME_FORMAT
4264 ", offset %" G_GUINT64_FORMAT " and size %d over pad %s",
4265 GST_TIME_ARGS (next_ts), GST_BUFFER_OFFSET (buf), size,
4266 GST_PAD_NAME (stream->pad));
4268 /* update current position in the segment */
4269 gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts);
4271 /* mark discont when pending */
4272 if (G_UNLIKELY (stream->discont)) {
4273 GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
4274 stream->discont = FALSE;
4276 res = gst_pad_push (stream->pad, buf);
4279 res = gst_avi_demux_combine_flows (avi, stream, res);
4280 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4281 GST_DEBUG ("Push failed; %s", gst_flow_get_name (res));
4294 GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME",
4295 gst_format_get_name (format));
4296 res = GST_FLOW_ERROR;
4302 * Send pending tags.
4305 push_tag_lists (GstAviDemux * avi)
4312 GST_DEBUG_OBJECT (avi, "Pushing pending tag lists");
4314 for (i = 0; i < avi->num_streams; i++)
4315 if (avi->stream[i].pad && avi->stream[i].taglist) {
4316 GST_DEBUG_OBJECT (avi->stream[i].pad, "Tags: %" GST_PTR_FORMAT,
4317 avi->stream[i].taglist);
4318 gst_element_found_tags_for_pad (GST_ELEMENT (avi), avi->stream[i].pad,
4319 avi->stream[i].taglist);
4320 avi->stream[i].taglist = NULL;
4323 if (avi->globaltags == NULL)
4324 avi->globaltags = gst_tag_list_new ();
4326 gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE,
4327 GST_TAG_CONTAINER_FORMAT, "AVI", NULL);
4329 GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, avi->globaltags);
4330 gst_element_found_tags (GST_ELEMENT (avi), avi->globaltags);
4331 avi->globaltags = NULL;
4332 avi->got_tags = FALSE;
4336 gst_avi_demux_loop (GstPad * pad)
4339 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4341 switch (avi->state) {
4342 case GST_AVI_DEMUX_START:
4343 if (G_UNLIKELY ((res =
4344 gst_avi_demux_stream_init_pull (avi)) != GST_FLOW_OK)) {
4345 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4348 avi->state = GST_AVI_DEMUX_HEADER;
4350 case GST_AVI_DEMUX_HEADER:
4351 if (G_UNLIKELY ((res =
4352 gst_avi_demux_stream_header_pull (avi)) != GST_FLOW_OK)) {
4353 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4356 avi->state = GST_AVI_DEMUX_MOVI;
4358 case GST_AVI_DEMUX_MOVI:
4359 if (G_UNLIKELY (avi->seek_event)) {
4360 gst_avi_demux_push_event (avi, avi->seek_event);
4361 avi->seek_event = NULL;
4363 if (G_UNLIKELY (avi->got_tags)) {
4364 push_tag_lists (avi);
4366 /* process each index entry in turn */
4367 res = gst_avi_demux_stream_data (avi);
4369 /* pause when error */
4370 if (G_UNLIKELY (res != GST_FLOW_OK)) {
4371 GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res));
4376 GST_ERROR_OBJECT (avi, "unknown state %d", avi->state);
4377 res = GST_FLOW_ERROR;
4381 GST_LOG_OBJECT (avi, "state: %d res:%s", avi->state, gst_flow_get_name (res));
4387 GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res));
4388 avi->segment_running = FALSE;
4389 gst_pad_pause_task (avi->sinkpad);
4391 if (GST_FLOW_IS_FATAL (res) || (res == GST_FLOW_NOT_LINKED)) {
4392 gboolean push_eos = TRUE;
4394 if (res == GST_FLOW_UNEXPECTED) {
4395 /* handle end-of-stream/segment */
4396 if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) {
4399 if ((stop = avi->segment.stop) == -1)
4400 stop = avi->segment.duration;
4402 GST_INFO_OBJECT (avi, "sending segment_done");
4404 gst_element_post_message
4406 gst_message_new_segment_done (GST_OBJECT (avi), GST_FORMAT_TIME,
4411 /* for fatal errors we post an error message */
4412 GST_ELEMENT_ERROR (avi, STREAM, FAILED,
4413 (_("Internal data stream error.")),
4414 ("streaming stopped, reason %s", gst_flow_get_name (res)));
4417 GST_INFO_OBJECT (avi, "sending eos");
4418 gst_avi_demux_push_event (avi, gst_event_new_eos ());
4424 static GstFlowReturn
4425 gst_avi_demux_chain (GstPad * pad, GstBuffer * buf)
4428 GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad));
4430 GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf));
4431 gst_adapter_push (avi->adapter, buf);
4433 switch (avi->state) {
4434 case GST_AVI_DEMUX_START:
4435 if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) {
4436 GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res));
4440 case GST_AVI_DEMUX_HEADER:
4441 if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) {
4442 GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res));
4446 case GST_AVI_DEMUX_MOVI:
4447 if (G_UNLIKELY (avi->seek_event)) {
4448 gst_avi_demux_push_event (avi, avi->seek_event);
4449 avi->seek_event = NULL;
4451 if (G_UNLIKELY (avi->got_tags)) {
4452 push_tag_lists (avi);
4454 res = gst_avi_demux_stream_data (avi);
4457 GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL),
4458 ("Illegal internal state"));
4459 res = GST_FLOW_ERROR;
4463 GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state,
4464 gst_flow_get_name (res));
4470 gst_avi_demux_sink_activate (GstPad * sinkpad)
4472 if (gst_pad_check_pull_range (sinkpad)) {
4473 GST_DEBUG ("going to pull mode");
4474 return gst_pad_activate_pull (sinkpad, TRUE);
4476 GST_DEBUG ("going to push (streaming) mode");
4477 return gst_pad_activate_push (sinkpad, TRUE);
4482 gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
4484 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad));
4487 avi->segment_running = TRUE;
4488 avi->streaming = FALSE;
4489 return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop,
4492 avi->segment_running = FALSE;
4493 return gst_pad_stop_task (sinkpad);
4498 gst_avi_demux_activate_push (GstPad * pad, gboolean active)
4500 GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad));
4503 GST_DEBUG ("avi: activating push/chain function");
4504 avi->streaming = TRUE;
4506 GST_DEBUG ("avi: deactivating push/chain function");
4512 static GstStateChangeReturn
4513 gst_avi_demux_change_state (GstElement * element, GstStateChange transition)
4515 GstStateChangeReturn ret;
4516 GstAviDemux *avi = GST_AVI_DEMUX (element);
4518 switch (transition) {
4519 case GST_STATE_CHANGE_READY_TO_PAUSED:
4520 avi->streaming = FALSE;
4521 gst_segment_init (&avi->segment, GST_FORMAT_TIME);
4527 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
4528 if (ret == GST_STATE_CHANGE_FAILURE)
4531 switch (transition) {
4532 case GST_STATE_CHANGE_PAUSED_TO_READY:
4533 gst_avi_demux_reset (avi);