source: extensions/gsdl-video/trunk/perllib/plugins/TimedHTMLPlugin.pm@ 18897

Last change on this file since 18897 was 18897, checked in by davidb, 15 years ago

Change from using videocoverter.pm to VideoConverter.pm

File size: 26.7 KB
RevLine 
[18425]1###########################################################################
2#
3# TimedHTMLPlug.pm --
4#
5# A component of the Greenstone digital library software
6# from the New Zealand Digital Library Project at the
7# University of Waikato, New Zealand.
8#
9# Copyright (C) 1999 New Zealand Digital Library Project
10#
11# This program is free software; you can redistribute it and/or modify
12# it under the terms of the GNU General Public License as published by
13# the Free Software Foundation; either version 2 of the License, or
14# (at your option) any later version.
15#
16# This program is distributed in the hope that it will be useful,
17# but WITHOUT ANY WARRANTY; without even the implied warranty of
18# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19# GNU General Public License for more details.
20#
21# You should have received a copy of the GNU General Public License
22# along with this program; if not, write to the Free Software
23# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24#
25###########################################################################
26
27
28package TimedHTMLPlugin;
29
[18897]30##use videoconvert;
[18425]31
32use HTMLPlugin;
[18897]33use VideoConverter;
[18425]34
35sub BEGIN {
[18897]36 @TimedHTMLPlugin::ISA = ('HTMLPlugin', 'VideoConverter');
[18425]37}
38
[18897]39
[18425]40use strict; # every perl program should have this!
41no strict 'refs'; # make an exception so we can use variables as filehandles
42
43my $arguments =
44 [
45 { 'name' => "video_excerpt_duration",
46 'desc' => "{VideoPlug.video_excerpt_duration}",
47 'type' => "string",
48 'reqd' => "no" }
49 ];
50
51
52
53
54my $options = { 'name' => "TimedHTMLPlugin",
55 'desc' => "{TimedHTMLPlugin.desc}",
56 'abstract' => "no",
57 'inherits' => "yes",
58 'args' => $arguments };
59
60
61sub new {
62 my ($class) = shift (@_);
63 my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
64 push(@$pluginlist, $class);
65
66 if(defined $arguments){ push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});}
67 if(defined $options) { push(@{$hashArgOptLists->{"OptList"}},$options)};
68
[18897]69 new VideoConverter($pluginlist, $inputargs, $hashArgOptLists);
[18425]70
71 my $self = (defined $hashArgOptLists)
72 ? new HTMLPlugin($pluginlist,$inputargs,$hashArgOptLists)
73 : new HTMLPlugin($pluginlist,$inputargs);
74
75 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
76
77 my $collect_bin = &util::filename_cat($collect_dir,"bin");
78 my $collect_script = &util::filename_cat($collect_bin,"script");
79
80 $ENV{'PATH'} .= ":" if (defined $ENV{'PATH'});
81 $ENV{'PATH'} .= "$collect_bin:$collect_script";
82
83 return bless $self, $class;
84}
85
[18897]86sub begin {
87 my $self = shift (@_);
88 my ($pluginfo, $base_dir, $processor, $maxdocs) = @_;
89
90 $self->SUPER::begin(@_);
91 $self->VideoConverter::begin(@_);
92}
93
94
95sub init {
96 my $self = shift (@_);
97 my ($verbosity, $outhandle, $failhandle) = @_;
98
99 $self->SUPER::init(@_);
100 $self->VideoConverter::init(@_);
101}
102
103
[18425]104sub html_to_text
105{
106 my ($self, $text) = @_;
107
108 $text =~ s/<\/?[^>]*>//g;
109
110 $text =~ s/&nbsp;/ /g;
111
112 $text =~ s/\s+/ /gs;
113 $text =~ s/^\s+//;
114 $text =~ s/\s+$//;
115
116 return $text;
117}
118
119
120sub extract_metadata_table
121{
122 my ($self, $textref) = @_;
123
124 my $metatable_store = {};
125
126 my $metatable_re = "<table([^>]*)>(.*?<p class=\"?Metadata\"?>.*?)<\\/table>";
127
128 if ($$textref =~ m/$metatable_re/gsi) {
129 my $metatable_attr = $1;
130 my $metatable_body = $2;
131
132 my @tr_list = ($metatable_body =~ m/(<tr[^>]*>.*?<\/tr>)/gsi);
133
134 my @filtered_tr_list = ();
135
136 foreach my $tr (@tr_list) {
137
138 my $in_filtered_tr = 1;
139
140 my @td_list = ($tr =~ m/<td[^>]*>(.*?)<\/td>/gsi);
141 my $td_list_num = scalar(@td_list);
142
143 if ($td_list_num == 2) {
144 my $meta_name = $self->html_to_text($td_list[0]);
145 my $meta_value = $self->html_to_text($td_list[1]);
146
147 $meta_name =~ s/\s*//g;
148
149
150 if ($meta_value =~ m/^(\s*|\?+)$/) {
151 $in_filtered_tr = 0;
152 }
153 else {
154 my $meta_name_label = $meta_name;
155 $meta_name_label =~ s/\s+//g;
156
157 $metatable_store->{$meta_name_label} = $meta_value;
158
159 if ($meta_name_label =~ m/^GS\./) {
160 # even though we want to store this as metadata, we
161 # don't want this going into table presented at top of document
162 $in_filtered_tr = 0;
163 }
164
165 }
166 }
167 else {
168 print STDERR "Warning: Metadata table does not consist of two cells (metadata name : metadata value)\n";
169 print STDERR " Skipping\n";
170 }
171
172
173 if ($in_filtered_tr) {
174 push(@filtered_tr_list,$tr);
175 }
176 }
177
178 my $filtered_tr_block = join("\n",@filtered_tr_list);
179 my $filtered_table = "<table$metatable_attr>$filtered_tr_block</table>";
180
181
182 ### my $metatable_re = "<table[^>]*>.*?<p class=\"?Metadata\"?>.*?<\\/table>";
183
184### print STDERR "*** filtered table = $filtered_table\n";
185
186 $$textref =~ s/$metatable_re/$filtered_table/si;
187
188 }
189
190 return $metatable_store;
191
192}
193
194
195
196
197
198my $only_num = 0;
199my $only_limit = 100;
200
201sub hms_to_secs
202{
203 my $self = shift @_;
204 my ($hh,$mm,$ss) = @_;
205
206 return $hh*3600 + $mm*60 + $ss;
207}
208
209
210
211sub timed_event
212{
213 my $self = shift (@_);
214
215 my ($front, $tape, $hh, $mm, $ss, $back) = @_;
216
217 my $time_encoded = "$hh:$mm:$ss";
218 my $time_encoded_file = "$hh$mm$ss";
219
220 my $time_pos = $self->{'time_pos'};
221 my $time_num = scalar(@{$self->{'time_seq'}});
222
[18897]223#### my $videoconvert = $self->{'videoconvert'};
[18425]224
225 # excerpt from tim_pos -> time_pos + 2;
226 my $adv_time_pos = $time_pos+2;
227 $adv_time_pos = $time_num-1 if ($adv_time_pos>=$time_num);
228
229 my $adv_time_elem = $self->{'time_seq'}->[$adv_time_pos];
230
231# print STDERR "*** ", substr($adv_time_elem,0,800), "\n";
232
233 my ($atape,$ah,$am,$as) = ($adv_time_elem =~ m/(T\d+:) ?(\d\d):(\d\d):(\d\d)(?:\:\d\d)?/);
234
235 my $excerpt_len = undef;
236 my $time_in_secs = $self->hms_to_secs($hh,$mm,$ss);
237
238 if (!defined $tape) {
239 if (defined $self->{'ptape'}) {
240 $tape = $self->{'ptape'};
241 }
242 else {
243 print STDERR "Warning: First time offset does not define tape side\n";
244 print STDERR " Defaulting to 1\n";
245 $tape = "T1:";
246 }
247 }
248
249 if (!defined $atape) {
250 $atape = "T1";
251 }
252
253# print STDERR "**** atape = $atape\n";
254# print STDERR "*** tape = $tape\n";
255
256 if ($atape eq $tape) {
257 my $adv_time_in_secs = $self->hms_to_secs($ah,$am,$as);
258
259 $excerpt_len = $adv_time_in_secs - $time_in_secs;
260 }
261
262 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
263
264 my $media_type = $self->{'media_type'};
265 my $media_dir = $self->{'media_dir'};
266 my $media_root = $self->{'media_root'};
267
268 my $media_base_dir = $self->{'media_base_dir'};
269
270 my $mp3_html;
271 my $avi_html;
272
273 my $tape_num = "1";
274
275 if (defined $media_type) {
276
277 my $src_file;
278 my $src_filename;
279
280 if ($media_type eq "video") {
281 $src_file = "$media_root\_01_$tape_num.VOB";
282 $src_filename
283 = &util::filename_cat($media_base_dir, $src_file);
284 }
285 elsif ($media_type =~ m/^audio$/) {
286 $src_file = "$media_root\_Tape$tape_num.mp3";
287 $src_filename
288 = &util::filename_cat($media_base_dir, $src_file);
289 }
290 else {
291 print STDERR "Warning: Unrecognised media type: $media_type\n";
292 }
293
294
295 if ($media_type eq "video") {
296
297 # video excerpt
298
299 my $encoded_file = "$media_dir\_$time_encoded_file.avi";
300
301 my $ve_filename
302 = &util::filename_cat($collect_dir,"media","video_excerpt",$encoded_file);
303
304 if ($only_num < $only_limit) {
305 if (! -e $ve_filename) {
306 # my $args = "-vcodec mpeg2video";
307 my $args = "-vcodec msmpeg4";
308
309 my $ve_cmd = "gsmpeg.sh -v 1 -i $src_filename $args -ss $time_encoded ";
310
311 if (defined $excerpt_len) {
312 $ve_cmd .= "-t $excerpt_len ";
313 }
314
315 $ve_cmd .= $ve_filename;
316
317## print STDERR "$ve_cmd\n";
318
319## `$ve_cmd`;
320 }
321
322## my $avi_url = "http://mcgonagall.cs.waikato.ac.nz:8201/gsdl/collect/hauraki2/media/video_excerpt/$media_dir\_$time_encoded_file.avi";
323 my $avi_url = "_httpprefix_/collect/hauraki2/media/video_excerpt/$media_dir\_$time_encoded_file.avi";
324
325## $avi_html = "<a class=\"mm\" href=\"$avi_url\"><img border=1 src=\"_httpcimages_\/video5.gif\"></a>";
326
327
328 ## my $stream_url = "_httpstreamserver_/$local_root.asf";
329## my $stream_url = "http://mcgonagall.cs.waikato.ac.nz:8090/$local_root.avi";
330## $avi_html .= "<a class=\"mm\" href=\"$stream_url\">Stream</a>";
331
332
333 ## $avi_html .= "<a class=\"mm\" href=\"_httpcurrentdocumentwithvplayer_\"><img border=1 src=\"_httpcimages_\/video5.gif\"></a>";
334
335 $avi_html .= "<a class=\"mm\" href=\"javascript:videoplayerseek($hh,$mm,$ss)\"><img border=1 src=\"_httpcimages_\/video5.gif\"></a>";
336
337 # save 'time-stamp' as metadata???
338
339
340
341 }
342 else {
343 $avi_html = "<img src=\"_httpcimages_\/video5.gif\">";
344 }
345 }
346
347 if ($media_type =~ m/^(video|audio)$/) {
348
349 # audio excerpt
350# my $encoded_file = "$media_dir\_$time_encoded_file.mp3";
351
352# ## my $src_file = "$media_root\_Tape$tape_num.avi";
353
354# #my $src_filename
355# # = &util::filename_cat($collect_dir,"media",$media_type ,$media_dir, $src_file);
356
357# my $ae_filename
358# = &util::filename_cat($collect_dir,"media","audio_excerpt",$encoded_file);
359
360
361 if ($only_num < $only_limit) {
362
363 $excerpt_len = 120 if (!defined $excerpt_len); #######
364
365 my ($ae_cmd,$omp3_filename,$omp3_file)
[18897]366 = $self->audio_excerpt_cmd($src_filename,
367 $hh,$mm,$ss,$excerpt_len);
[18425]368
[18897]369 my $ae_options = { @{$self->{'ffmpeg_monitor'}},
[18425]370 'message_prefix' => "Audio Excerpt",
371 'message' => "Generating audio excerpt: $omp3_file" };
372
373 my ($ae_regenerated,$ae_result,$ae_had_error)
[18897]374 = $self->run_cached_general_cmd($ae_cmd,$omp3_filename,$ae_options);
[18425]375
376 push(@{$self->{'mp3_excerpts'}}, { 'omp3_file' => $omp3_file, 'omp3_filename' => $omp3_filename} );
377
378 }
379
380
381
382
383 # if (! -e $ae_filename) {
384 if ($only_num < $only_limit) {
385# if (! -e $ae_filename) {
386
387# my $args = "-acodec mp3";
388
389# ## my $src_filename = "media/video/mirth/VTS_01_1.avi";
390# my $ae_cmd = "gsmpeg.sh -v 1 -i $src_filename $args -ss $time_encoded ";
391
392# if (defined $excerpt_len) {
393# $ae_cmd .= "-t $excerpt_len ";
394# }
395
396# $ae_cmd .= $ae_filename;
397
398## print STDERR "$ae_cmd\n";
399
400## `$ae_cmd`;
401# }
402
403
404## my $mp3_url = "http://mcgonagall.cs.waikato.ac.nz:8201/gsdl/collect/hauraki2/media/audio_excerpt/$media_dir\_$time_encoded_file.mp3";
405# my $mp3_url = "_httpprefix_/collect/hauraki2/media/audio_excerpt/$media_dir\_$time_encoded_file.mp3";
406
407 my ($voa_root) = ($src_file =~ m/^(.*)\..*?$/);
408
409 my $mp3_url = "javascript:audioexcerptplay('$voa_root','$hh','$mm','$ss')";
410
411# my $mp3_url = "_httpcollection_/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}/$media_dir\_$time_encoded_file.mp3";
412
413 $mp3_html = "<a class=\"mm\" href=\"$mp3_url\"><img border=1 src=\"_httpcimages_\/audio2.gif\"></a>";
414
415# my $baseexcerpt_url = "_httpcollection_/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}";
416
417##### $doc_obj->add_metadata ($section, "audioexcerpturl",$mp3_url);
418
419
420 }
421 else {
422 $mp3_html = "<img src=\"_httpcimages_\/audio2.gif\">";
423
424 }
425 }
426 }
427 else {
428 print STDERR "Warning: no media type defined.\n";
429 }
430
431
432 $only_num++;
433
434 $self->{'time_pos'}++;
435
436 my $table = "<table width=\"100%\" cellspacing=\"1\" cellpadding=\"0\"><tr valign=\"middle\">";
437 $table .= "<td>$avi_html</td>" if (defined $avi_html);
438 $table .= "<td>$mp3_html</td>";
439 $table .= "<td>$time_encoded</td>";
440 $table .= "</tr></table>";
441
442 # my $line = "$front$avi_html&nbsp;$mp3_html&nbsp;$time_encoded$back";
443
444 my $line = "$front$table$back";
445
446 # Remember tape prefix for next call
447 $self->{'ptape'} = $tape;
448
449 return $line;
450}
451
452
453sub hyperlink_timing_info
454{
455 my ($self, $textref) = @_;
456
457 my $media_type = $self->{'media_type'};
458 my $media_dir = $self->{'media_dir'};
459 my $media_root = $self->{'media_root'};
460
461 my $front_re = "<p class=Timing><span\\s+.*?>";
462 my $tape_re = "T\\d+:";
463 my $tt_re = "\\d\\d";
464 my $back_re = ".*?<\\/span>";
465
466 my $time_match_re = "$front_re$tt_re:$tt_re:$tt_re$back_re(?:\:$tt_re)?";
467 # my $time_sub_re = "($front_re)($tape_re)? ?($tt_re):($tt_re):($tt_re)(?:\:$tt_re)?($back_re)";
468
469 my $tape_match_re = "$front_re($tape_re)? ?$tt_re:$tt_re:$tt_re(?:\:$tt_re)?$back_re";
470 my $tape_sub_re = "($front_re)($tt_re):($tt_re):($tt_re)(?:\:$tt_re)?($back_re)";
471
472
473
474 my @time_seq = ($$textref =~ m/$time_match_re/sgi);
475
476 # artifically add tape information into all time indexes
477 my $extrapolate_tape = "";
478 my $num_seq = scalar(@time_seq);
479 for (my $i=0; $i<$num_seq; $i++) {
480 my ($curr_tape) = ($time_seq[$i] =~ m/$tape_match_re/sgi);
481 if (!defined $curr_tape) {
482 $time_seq[$i] =~ s/$tape_sub_re/$1$extrapolate_tape$2:$3:$4$5/sgi;
483 }
484 else {
485 if ($curr_tape ne $extrapolate_tape) {
486 $extrapolate_tape = $curr_tape;
487 }
488 }
489 }
490
491
492 $self->{'time_seq'} = \@time_seq;
493 $self->{'time_pos'} = 0;
494
495 $$textref =~ s/(<p class=Timing><span\s+.*?>)(T\d+:)? ?(\d\d):(\d\d):(\d\d)(?:\:\d\d)?.*?(<\/span>)/$self->timed_event($1,$2,$3,$4,$5,$6)/sgie;
496
497
498 # knock out any div tags as they interfere with document broken up into sections
499 $$textref =~ s/<\/?div.*?>//gi;
500
501 # Embedded word style infomation is lost by HTMLPlug => make Question
502 # style use HTML italics
503
504 $$textref =~ s/<p class=\"Question\">(.*?)<\/p>/<p><i>$1<\/i><\/p>/gsi;
505
506}
507
508
509
510sub store_block_files
511{
512 my $self =shift (@_);
513 my ($filename_full_path, $block_hash) = @_;
514
515 # Would be better if this were tied to particular HTML docs that
516 # this plugin has processed.
517
518 # For now block all files native to DVD format
519
520 if (($filename_full_path =~ m/\.(IFO|BUP)$/) # block info and backup-info data
521 || ($filename_full_path =~ m/VIDEO_TS\..*?$/) # block top-level files
522 || ($filename_full_path =~ m/VTS_\d\d_\d\.VOB$/) #
523 ) {
524
525 $block_hash->{'file_blocks'}->{$filename_full_path} = 1;
526 }
527}
528
529sub read_block {
530 my $self = shift (@_);
531
532 my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
533
534 print STDERR "***** TimedHTMLPlugin read_block\n";
535
536 my $filename = $file;
537 $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
538
539 if (($filename =~ m/\.(IFO|BUP)$/) # block info and backup-info data
540 || ($filename =~ m/VIDEO_TS\..*?$/) # block top-level files
541 || ($filename =~ m/VTS_\d\d_\d\.VOB$/) #
542 ) {
543 $self->{'num_blocked'} ++;
544 return (0,undef); # blocked
545 }
546
547
548##### || ($filename =~ m/VTS_\d\d_0\.VOB$/) # block menu item for this track
549
550
551 if (defined $self->{'file_blocks'}->{$filename} && $self->{'file_blocks'}->{$filename} == 1){
552 $self->{'num_blocked'} ++;
553 return (0,undef); # blocked
554 }
555
556
557 if (defined $self->{'re_file_block'}) {
558 my $re_file_blocks = $self->{'re_file_block'};
559 foreach my $re_file_block (@$re_file_blocks) {
560### print STDERR "**** re file block: $filename =~ m $re_file_block\n";
561 if ($filename =~ m/$re_file_block/) {
562### print STDERR "*** blocking $filename\n";
563
564 $self->{'num_blocked'} ++;
565 return (0,undef); # blocked
566 }
567 }
568 }
569
570
571 return $self->SUPER::read_block(@_);
572
573}
574
575
576sub read_file {
577 my $self = shift @_;
578 my ($filename, $encoding, $language, $textref) = @_;
579
580 $only_num = 0;
581
582 $self->SUPER::read_file(@_);
583
584 my $metatable_store = $self->extract_metadata_table($textref);
585 $self->{'metatable_store'} = $metatable_store;
586
587 my ($root, $dirname, $suffix)
588 = &File::Basename::fileparse($filename, "\\.[^\\.]+\$");
589
590 # media defaults
591 my $media_type = undef;
592 my $media_dir = $root;
593 ## my $media_root = "VTS_%02d_%02d";
594 my $media_root = "VTS";
595
596 if (defined $metatable_store->{'GS.Media'}) {
597 $media_type = $metatable_store->{'GS.Media'};
598 $media_type = lc($media_type);
599 }
600 if (defined $metatable_store->{'GS.MediaDirectory'}) {
601 $media_dir = $metatable_store->{'GS.MediaDirectory'};
602 }
603 if (defined $metatable_store->{'GS.MediaRoot'}) {
604 $media_root = $metatable_store->{'GS.MediaRoot'};
605 }
606
607 $self->{'media_type'} = $media_type;
608 $self->{'media_dir'} = $media_dir;
609 $self->{'media_root'} = $media_root;
610
611 my $media_base_dir = &util::filename_cat($dirname,$media_dir);
612 $self->{'media_base_dir'} = $media_base_dir;
613
[18897]614 $self->{'vob_duration_info'} = &VideoConverter::vob_durations($media_base_dir,"1",$self->{'outhandle'});
[18425]615
616## $self->hyperlink_timing_info($textref);
617
618 # Convert entities to their UTF8 equivalents
619 $$textref =~ s/&(lt|gt|amp|quot|nbsp);/&z$1;/go;
620 $$textref =~ s/&([^;]+);/&ghtml::getcharequiv($1,1)/gseo;
621 $$textref =~ s/&z(lt|gt|amp|quot|nbsp);/&$1;/go;
622}
623
624
625sub streamable_video
626{
627 my $self = shift (@_);
628
629 my ($base_dir,$filename,$doc_obj,$section) = @_;
630
631 my $outhandle = $self->{'outhandle'};
632 my $verbosity = $self->{'verbosity'};
633
634 my $media_base_dir = $self->{'media_base_dir'};
635
636 #---
637 # Determine size of input video
638
639 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
640
641 my $media_type = $self->{'media_type'};
642 my $media_dir = $self->{'media_dir'};
643 my $media_root = $self->{'media_root'};
644
645 my $tape_num = "1";
646
647 my $src_file;
648 my $src_filename;
649
650 if ($media_type eq "video") {
651 $src_file = "$media_root\_01_$tape_num.VOB";
652 $src_filename
653 = &util::filename_cat($media_base_dir, $src_file);
654 }
655 elsif ($media_type =~ m/^audio$/) {
656 $src_file = "$media_root\_Tape$tape_num.mp3";
657 $src_filename
658 = &util::filename_cat($media_base_dir, $src_file);
659 }
660 else {
661 print STDERR "Warning: Unrecognised media type: $media_type\n";
662 }
663
664 if (-e $src_filename) {
665 $self->{'file_blocks'}->{$src_filename} = 1;
666
667 my $re_file_block = $src_filename;
668 $re_file_block =~ s/_01_$tape_num.VOB$/_\\d+_\\d+.VOB\$/;
669
670
671 push(@{$self->{'re_file_block'}},$re_file_block);
672 }
673
674 my ($video_type, $video_width, $video_height, $video_duration, $video_size,
675 $vcodec,$vfps,$atype,$afreq,$achan,$arate)
[18897]676 = &VideoConverter::identify($src_filename, $outhandle, $verbosity);
[18425]677
678 if ($vfps eq "unknown") {
679 print $outhandle "Unknown framerate, defaulting to 25 frames per second.\n";
680 $vfps = 25;
681 }
682
683### print STDERR "*** video duration = $video_duration\n";
684 my ($dur_hour,$dur_min,$dur_sec)
685 = ($video_duration =~ m/(\d+):(\d+):(\d+\.\d+)/);
686 my $total_dur_secs = $dur_hour*3600 + $dur_min*60 + $dur_sec;
687
688 $self->{'video-fps'} = $vfps;
689 $self->{'num-total-frames'} = $total_dur_secs * $vfps;
690
691
692 # shorten duration prcessed for experimentation purposes
693 my $exp_duration = undef;
694
695 my $video_excerpt_duration = $self->{'video_excerpt_duration'};
696
697 print STDERR "**** video duration (secs) = $total_dur_secs\n";
698
699
700 if ((defined $video_excerpt_duration) && ($video_excerpt_duration ne "")) {
701 $exp_duration = $video_excerpt_duration;
702 my ($hh,$mm,$ss,$ms) = ($exp_duration =~ m/^(\d\d):(\d\d):(\d\d)\.?(\d\d)?/);
703 my $excerpt_dur_in_secs = $hh * 3600 + $mm * 60 + $ss;
704
705 if ($excerpt_dur_in_secs < $total_dur_secs) {
706 $self->{'num-total-frames'} = $excerpt_dur_in_secs * $vfps; # override calculation for full length duration
707 }
708 else {
709 # clip is already shorter than requested video excerpt duration
710 # set exp_duration back to undefined
711 $exp_duration = undef;
712 }
713 }
714
715 print $outhandle "TimedHTMLPlug: Preparing video files associated with $filename for HTMLPlug\n";
716
717 if (defined $exp_duration)
718 {
719 print $outhandle "Only encoding first $exp_duration of video.\n";
720 $self->{'exp_duration'} = $exp_duration;
721 }
722
723
[18897]724### my $videoconvert
725### = new videoconvert($base_dir,$src_filename,$verbosity,$outhandle,$exp_duration);
726### $self->{'videoconvert'} = $videoconvert;
[18425]727
728 #---
729 # Generate the Flash FLV format for streaming purposes
730
731 my $streaming_bitrate = "256k"; # used to be 192k
732 my $streaming_size = "360"; # used to be 352 (CIF?)
733 my $streaming_achan = "1";
734 my $streaming_arate = "44100";
735 my $streaming_quality = "high";
736
737 #---
738 # Convert video to flash
739 #---
740 my ($stream_cmd,$oflash_filename,$oflash_file)
[18897]741 = $self->stream_cmd($src_filename,
742 $video_width,$video_height,
743 $streaming_quality, $streaming_bitrate, $streaming_size,
744 $streaming_achan, $streaming_arate);
[18425]745
[18897]746 my $streamable_options = { @{$self->{'ffmpeg_monitor'}},
[18425]747 'message_prefix' => "Stream",
748 'message' => "Generating streamable video: $oflash_file" };
749
750 my ($streamable_regenerated,$streamable_result,$streamable_had_error)
[18897]751 = $self->run_cached_general_cmd($stream_cmd,$oflash_filename,$streamable_options);
[18425]752
753 $self->{'streamable_regenerated'} = $streamable_regenerated;
754
755 if (!$streamable_had_error) {
756 #---
757 # Make video seekable
758 #---
[18897]759 my ($streamseekable_cmd,$ostreamseekable_filename) = $self->streamseekable_cmd($oflash_filename);
[18425]760
[18897]761 my $streamseekable_options = { @{$self->{'flvtool2_monitor'}},
[18425]762 'message_prefix' => "Stream Seekable",
763 'message' => "Reprocessing video stream to be seekable by timeline: $oflash_file" };
764
765 if ($streamable_regenerated) {
[18897]766 $self->run_general_cmd($streamseekable_cmd,$streamseekable_options);
[18425]767 }
768
769 my $streamable_url = $oflash_file;
770## $streamable_url =~ s/ /%20/g;
771
772 $doc_obj->add_metadata ($section, "streamablevideo", $streamable_url);
773 $doc_obj->associate_file($oflash_filename,$oflash_file,"video/flash",
774 $section);
775 }
776
777 #
778 # FlowPlayer.swf height+22 pixels
779 # FlowPlayerBlack.swf height+16 pixels
780 # FlowPlayerThermo.swf height+16 pixels
781 # FlowPlayerWhite.swf height+26 pixels
782 $doc_obj->add_metadata ($section, "flashwidth", $video_width);
783 $doc_obj->add_metadata ($section, "flashheight", $video_height + 22 + 100);
784
785 my $base_url = "_httpstreamserverprefix_/collect/[collection]/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}/";
786
787 $doc_obj->add_metadata ($section, "baseurl",$base_url);
788
789 $self->{'oflash_file'} = $oflash_file;
790 $self->{'oflash_filename'} = $oflash_filename;
791
792}
793
794
795
796sub add_cuepoints
797{
798 my ($self) = shift @_;
799 my ($doc_obj) = @_;
800
801 my $section = $doc_obj->get_top_section();
802 my $chapters = $doc_obj->get_children($section);
803
804
805 # open file
[18897]806 my $output_dir = $self->{'cached_dir'};
[18425]807 my $cue_filename = &util::filename_cat($output_dir,"on_cue.xml");
808
809 open(CUEOUT,">$cue_filename")
810 || die "Unable to open $cue_filename: $!\n";
811 print CUEOUT "<tags>\n";
812
813
814 my $cc = 0;
815
816 foreach my $chap (@$chapters)
817 {
818 $cc++;
819
820 my $chap_text = $doc_obj->get_text($chap);
821
822 my @cuepoints
823 = ($chap_text =~ m/<p class=Timing><span\s+.*?>(?:T\d+:)? ?(\d\d:\d\d:\d\d)(?:\:\d\d)?/gsi);
824
825 my $count = 0;
826
827 foreach my $cuepoint (@cuepoints)
828 {
829 my ($hh,$mm,$ss) = ($cuepoint =~ m/(\d\d):(\d\d):(\d\d)/);
830
831 my $cuept_insecs = $self->hms_to_secs($hh,$mm,$ss);
832
833 if ($cuept_insecs < 2) {
834 $cuept_insecs += 2;
835 }
836 my $cuept_inmsecs = 1000 * $cuept_insecs;
837
838 $doc_obj->add_metadata($section,"cuepoint",$cuept_inmsecs);
839 my $chap_title = $doc_obj->get_metadata_element($chap,"Title");
840
841 # Navigation point (used in seeking)
842# print CUEOUT " <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
843# print CUEOUT " <name>$chap_title</name>\n";
844# print CUEOUT " <timestamp>$cuept_inmsecs</timestamp>\n";
845# print CUEOUT " <parameters>\n";
846# print CUEOUT " <thumb>dummy</thumb>\n";
847# print CUEOUT " <sectionnum>$chap</sectionnum>\n";
848# print CUEOUT " <subsectionnum>$count</subsectionnum>\n";
849# print CUEOUT " <cuept>$cuept_inmsecs</cuept>\n";
850# print CUEOUT " </parameters>\n";
851# print CUEOUT " <type>navigation</type>\n";
852# print CUEOUT " </metatag>\n";
853
854
855# print CUEOUT " <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
856# print CUEOUT " <name>$chap_title</name>\n";
857# print CUEOUT " <timestamp>$cuept_inmsecs</timestamp>\n";
858# print CUEOUT " <parameters>\n";
859# print CUEOUT " <thumb>foo.jpg</thumb>\n";
860# print CUEOUT " </parameters>\n";
861# print CUEOUT " <type>navigation</type>\n";
862# print CUEOUT " </metatag>\n";
863
864 if ($count==0)
865 {
866 # Event (used to hook in to javascipt callback)
867 # Only do for the first in each chapter
868
869 print CUEOUT " <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
870## print CUEOUT " <name>Test $cc</name>\n";
871 print CUEOUT " <name>$chap_title</name>\n";
872 print CUEOUT " <timestamp>$cuept_inmsecs</timestamp>\n";
873 print CUEOUT " <parameters>\n";
874 print CUEOUT " <cuept>$cuept_inmsecs</cuept>\n";
875 print CUEOUT " <sectionnum>$chap</sectionnum>\n";
876 print CUEOUT " </parameters>\n";
877 print CUEOUT " <type>event</type>\n";
878## print CUEOUT " <type>actionscript</type>\n";
879 print CUEOUT " </metatag>\n";
880 }
881
882 $count++;
883 }
884 }
885
886
887 print CUEOUT "</tags>\n";
888 close(CUEOUT);
889
[18897]890#### my $videoconvert = $self->{'videoconvert'};
[18425]891 my $oflash_filename = $self->{'oflash_filename'};
892 my $oflash_file = $self->{'oflash_file'};
893
[18897]894 my ($streamcuepts_cmd,$ostreamcuepts_filename) = $self->streamcuepts_cmd($oflash_filename);
[18425]895
896 my $verbosity = $self->{'verbosity'};
897 my $outhandle = $self->{'outhandle'};
898
[18897]899 my $streamcuepts_options = { @{$self->{'flvtool2_monitor'}},
[18425]900 'message_prefix' => "Stream Cue Points",
901 'message' => "Reprocessing video stream to add cuepoints on timeline: $oflash_file" };
902
903 my $streamable_regenerated = $self->{'streamable_regenerated'};
904
905 if ($streamable_regenerated) {
[18897]906 $self->run_general_cmd($streamcuepts_cmd,$streamcuepts_options);
[18425]907 }
908
909
910
911}
912
913
914
915sub process {
916 my $self = shift (@_);
917 my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli) = @_;
918
919 my $filename = $file;
920 $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
921
922 my $top_section = $doc_obj->get_top_section();
923
924 $self->streamable_video($base_dir,$filename,$doc_obj,$top_section);
925
926 $self->hyperlink_timing_info($textref);
927
928 foreach my $mp3_excerpt (@{$self->{'mp3_excerpts'}}) {
929 my $omp3_file = $mp3_excerpt->{'omp3_file'};
930 my $omp3_filename = $mp3_excerpt->{'omp3_filename'};
931
932 $doc_obj->associate_file($omp3_filename,$omp3_file,"audio/mp3",
933 $top_section);
934 }
935 $self->{'mp3_excerpts'} = undef;
936
937 my $metatable_store = $self->{'metatable_store'};
938 foreach my $metaname (keys %$metatable_store) {
939 my $metadata = $metatable_store->{$metaname};
940 $doc_obj->add_metadata($top_section,$metaname,$metadata);
941 }
942 $self->{'metatable_store'} = undef;
943
944 my $ret_val = $self->SUPER::process(@_);
945
946 $self->add_cuepoints($doc_obj);
947
948
949 return $ret_val;
950
951}
952
953
954
955sub replace_images {
956 my $self = shift (@_);
957 my ($front, $link, $back, $base_dir,
958 $file, $doc_obj, $section) = @_;
959
960 if ($link =~ m/^"?_.*?_"?\//) {
961 # variety of greenstone macro, so let through unchanged
962 return $front . $link . $back ;
963 }
964
965 return $self->SUPER::replace_images(@_);
966}
967
968
969
970
971
972sub replace_href_links {
973 my $self = shift (@_);
974 my ($front, $link, $back, $base_dir, $file, $doc_obj, $section) = @_;
975
976
977 if ($link =~ m/^"?_.*?_"?/) {
978 # variety of greenstone macro, so let through unchanged
979 return $front . $link . $back ;
980 }
981
982 return $self->SUPER::replace_href_links(@_);
983}
984
9851;
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