source: extensions/gsdl-video/trunk/perllib/plugins/TimedHTMLPlugin.pm@ 18425

Last change on this file since 18425 was 18425, checked in by davidb, 15 years ago

Video extension to Greenstone

File size: 26.4 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
30use videoconvert;
31
32use HTMLPlugin;
33
34sub BEGIN {
35 @TimedHTMLPlugin::ISA = ('HTMLPlugin');
36}
37
38use strict; # every perl program should have this!
39no strict 'refs'; # make an exception so we can use variables as filehandles
40
41my $arguments =
42 [
43 { 'name' => "video_excerpt_duration",
44 'desc' => "{VideoPlug.video_excerpt_duration}",
45 'type' => "string",
46 'reqd' => "no" }
47 ];
48
49
50
51
52my $options = { 'name' => "TimedHTMLPlugin",
53 'desc' => "{TimedHTMLPlugin.desc}",
54 'abstract' => "no",
55 'inherits' => "yes",
56 'args' => $arguments };
57
58
59sub new {
60 my ($class) = shift (@_);
61 my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
62 push(@$pluginlist, $class);
63
64 if(defined $arguments){ push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});}
65 if(defined $options) { push(@{$hashArgOptLists->{"OptList"}},$options)};
66
67
68 my $self = (defined $hashArgOptLists)
69 ? new HTMLPlugin($pluginlist,$inputargs,$hashArgOptLists)
70 : new HTMLPlugin($pluginlist,$inputargs);
71
72 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
73
74 my $collect_bin = &util::filename_cat($collect_dir,"bin");
75 my $collect_script = &util::filename_cat($collect_bin,"script");
76
77 $ENV{'PATH'} .= ":" if (defined $ENV{'PATH'});
78 $ENV{'PATH'} .= "$collect_bin:$collect_script";
79
80 return bless $self, $class;
81}
82
83sub html_to_text
84{
85 my ($self, $text) = @_;
86
87 $text =~ s/<\/?[^>]*>//g;
88
89 $text =~ s/&nbsp;/ /g;
90
91 $text =~ s/\s+/ /gs;
92 $text =~ s/^\s+//;
93 $text =~ s/\s+$//;
94
95 return $text;
96}
97
98
99sub extract_metadata_table
100{
101 my ($self, $textref) = @_;
102
103 my $metatable_store = {};
104
105 my $metatable_re = "<table([^>]*)>(.*?<p class=\"?Metadata\"?>.*?)<\\/table>";
106
107 if ($$textref =~ m/$metatable_re/gsi) {
108 my $metatable_attr = $1;
109 my $metatable_body = $2;
110
111 my @tr_list = ($metatable_body =~ m/(<tr[^>]*>.*?<\/tr>)/gsi);
112
113 my @filtered_tr_list = ();
114
115 foreach my $tr (@tr_list) {
116
117 my $in_filtered_tr = 1;
118
119 my @td_list = ($tr =~ m/<td[^>]*>(.*?)<\/td>/gsi);
120 my $td_list_num = scalar(@td_list);
121
122 if ($td_list_num == 2) {
123 my $meta_name = $self->html_to_text($td_list[0]);
124 my $meta_value = $self->html_to_text($td_list[1]);
125
126 $meta_name =~ s/\s*//g;
127
128
129 if ($meta_value =~ m/^(\s*|\?+)$/) {
130 $in_filtered_tr = 0;
131 }
132 else {
133 my $meta_name_label = $meta_name;
134 $meta_name_label =~ s/\s+//g;
135
136 $metatable_store->{$meta_name_label} = $meta_value;
137
138 if ($meta_name_label =~ m/^GS\./) {
139 # even though we want to store this as metadata, we
140 # don't want this going into table presented at top of document
141 $in_filtered_tr = 0;
142 }
143
144 }
145 }
146 else {
147 print STDERR "Warning: Metadata table does not consist of two cells (metadata name : metadata value)\n";
148 print STDERR " Skipping\n";
149 }
150
151
152 if ($in_filtered_tr) {
153 push(@filtered_tr_list,$tr);
154 }
155 }
156
157 my $filtered_tr_block = join("\n",@filtered_tr_list);
158 my $filtered_table = "<table$metatable_attr>$filtered_tr_block</table>";
159
160
161 ### my $metatable_re = "<table[^>]*>.*?<p class=\"?Metadata\"?>.*?<\\/table>";
162
163### print STDERR "*** filtered table = $filtered_table\n";
164
165 $$textref =~ s/$metatable_re/$filtered_table/si;
166
167 }
168
169 return $metatable_store;
170
171}
172
173
174
175
176
177my $only_num = 0;
178my $only_limit = 100;
179
180sub hms_to_secs
181{
182 my $self = shift @_;
183 my ($hh,$mm,$ss) = @_;
184
185 return $hh*3600 + $mm*60 + $ss;
186}
187
188
189
190sub timed_event
191{
192 my $self = shift (@_);
193
194 my ($front, $tape, $hh, $mm, $ss, $back) = @_;
195
196 my $time_encoded = "$hh:$mm:$ss";
197 my $time_encoded_file = "$hh$mm$ss";
198
199 my $time_pos = $self->{'time_pos'};
200 my $time_num = scalar(@{$self->{'time_seq'}});
201
202 my $videoconvert = $self->{'videoconvert'};
203
204 # excerpt from tim_pos -> time_pos + 2;
205 my $adv_time_pos = $time_pos+2;
206 $adv_time_pos = $time_num-1 if ($adv_time_pos>=$time_num);
207
208 my $adv_time_elem = $self->{'time_seq'}->[$adv_time_pos];
209
210# print STDERR "*** ", substr($adv_time_elem,0,800), "\n";
211
212 my ($atape,$ah,$am,$as) = ($adv_time_elem =~ m/(T\d+:) ?(\d\d):(\d\d):(\d\d)(?:\:\d\d)?/);
213
214 my $excerpt_len = undef;
215 my $time_in_secs = $self->hms_to_secs($hh,$mm,$ss);
216
217 if (!defined $tape) {
218 if (defined $self->{'ptape'}) {
219 $tape = $self->{'ptape'};
220 }
221 else {
222 print STDERR "Warning: First time offset does not define tape side\n";
223 print STDERR " Defaulting to 1\n";
224 $tape = "T1:";
225 }
226 }
227
228 if (!defined $atape) {
229 $atape = "T1";
230 }
231
232# print STDERR "**** atape = $atape\n";
233# print STDERR "*** tape = $tape\n";
234
235 if ($atape eq $tape) {
236 my $adv_time_in_secs = $self->hms_to_secs($ah,$am,$as);
237
238 $excerpt_len = $adv_time_in_secs - $time_in_secs;
239 }
240
241 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
242
243 my $media_type = $self->{'media_type'};
244 my $media_dir = $self->{'media_dir'};
245 my $media_root = $self->{'media_root'};
246
247 my $media_base_dir = $self->{'media_base_dir'};
248
249 my $mp3_html;
250 my $avi_html;
251
252 my $tape_num = "1";
253
254 if (defined $media_type) {
255
256 my $src_file;
257 my $src_filename;
258
259 if ($media_type eq "video") {
260 $src_file = "$media_root\_01_$tape_num.VOB";
261 $src_filename
262 = &util::filename_cat($media_base_dir, $src_file);
263 }
264 elsif ($media_type =~ m/^audio$/) {
265 $src_file = "$media_root\_Tape$tape_num.mp3";
266 $src_filename
267 = &util::filename_cat($media_base_dir, $src_file);
268 }
269 else {
270 print STDERR "Warning: Unrecognised media type: $media_type\n";
271 }
272
273
274 if ($media_type eq "video") {
275
276 # video excerpt
277
278 my $encoded_file = "$media_dir\_$time_encoded_file.avi";
279
280 my $ve_filename
281 = &util::filename_cat($collect_dir,"media","video_excerpt",$encoded_file);
282
283 if ($only_num < $only_limit) {
284 if (! -e $ve_filename) {
285 # my $args = "-vcodec mpeg2video";
286 my $args = "-vcodec msmpeg4";
287
288 my $ve_cmd = "gsmpeg.sh -v 1 -i $src_filename $args -ss $time_encoded ";
289
290 if (defined $excerpt_len) {
291 $ve_cmd .= "-t $excerpt_len ";
292 }
293
294 $ve_cmd .= $ve_filename;
295
296## print STDERR "$ve_cmd\n";
297
298## `$ve_cmd`;
299 }
300
301## my $avi_url = "http://mcgonagall.cs.waikato.ac.nz:8201/gsdl/collect/hauraki2/media/video_excerpt/$media_dir\_$time_encoded_file.avi";
302 my $avi_url = "_httpprefix_/collect/hauraki2/media/video_excerpt/$media_dir\_$time_encoded_file.avi";
303
304## $avi_html = "<a class=\"mm\" href=\"$avi_url\"><img border=1 src=\"_httpcimages_\/video5.gif\"></a>";
305
306
307 ## my $stream_url = "_httpstreamserver_/$local_root.asf";
308## my $stream_url = "http://mcgonagall.cs.waikato.ac.nz:8090/$local_root.avi";
309## $avi_html .= "<a class=\"mm\" href=\"$stream_url\">Stream</a>";
310
311
312 ## $avi_html .= "<a class=\"mm\" href=\"_httpcurrentdocumentwithvplayer_\"><img border=1 src=\"_httpcimages_\/video5.gif\"></a>";
313
314 $avi_html .= "<a class=\"mm\" href=\"javascript:videoplayerseek($hh,$mm,$ss)\"><img border=1 src=\"_httpcimages_\/video5.gif\"></a>";
315
316 # save 'time-stamp' as metadata???
317
318
319
320 }
321 else {
322 $avi_html = "<img src=\"_httpcimages_\/video5.gif\">";
323 }
324 }
325
326 if ($media_type =~ m/^(video|audio)$/) {
327
328 # audio excerpt
329# my $encoded_file = "$media_dir\_$time_encoded_file.mp3";
330
331# ## my $src_file = "$media_root\_Tape$tape_num.avi";
332
333# #my $src_filename
334# # = &util::filename_cat($collect_dir,"media",$media_type ,$media_dir, $src_file);
335
336# my $ae_filename
337# = &util::filename_cat($collect_dir,"media","audio_excerpt",$encoded_file);
338
339
340 if ($only_num < $only_limit) {
341
342 $excerpt_len = 120 if (!defined $excerpt_len); #######
343
344 my ($ae_cmd,$omp3_filename,$omp3_file)
345 = $videoconvert->audio_excerpt_cmd($src_filename,
346 $hh,$mm,$ss,$excerpt_len);
347
348 my $ae_options = { @{$videoconvert->{'ffmpeg_monitor'}},
349 'message_prefix' => "Audio Excerpt",
350 'message' => "Generating audio excerpt: $omp3_file" };
351
352 my ($ae_regenerated,$ae_result,$ae_had_error)
353 = $videoconvert->run_cached_general_cmd($ae_cmd,$omp3_filename,$ae_options);
354
355 push(@{$self->{'mp3_excerpts'}}, { 'omp3_file' => $omp3_file, 'omp3_filename' => $omp3_filename} );
356
357 }
358
359
360
361
362 # if (! -e $ae_filename) {
363 if ($only_num < $only_limit) {
364# if (! -e $ae_filename) {
365
366# my $args = "-acodec mp3";
367
368# ## my $src_filename = "media/video/mirth/VTS_01_1.avi";
369# my $ae_cmd = "gsmpeg.sh -v 1 -i $src_filename $args -ss $time_encoded ";
370
371# if (defined $excerpt_len) {
372# $ae_cmd .= "-t $excerpt_len ";
373# }
374
375# $ae_cmd .= $ae_filename;
376
377## print STDERR "$ae_cmd\n";
378
379## `$ae_cmd`;
380# }
381
382
383## my $mp3_url = "http://mcgonagall.cs.waikato.ac.nz:8201/gsdl/collect/hauraki2/media/audio_excerpt/$media_dir\_$time_encoded_file.mp3";
384# my $mp3_url = "_httpprefix_/collect/hauraki2/media/audio_excerpt/$media_dir\_$time_encoded_file.mp3";
385
386 my ($voa_root) = ($src_file =~ m/^(.*)\..*?$/);
387
388 my $mp3_url = "javascript:audioexcerptplay('$voa_root','$hh','$mm','$ss')";
389
390# my $mp3_url = "_httpcollection_/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}/$media_dir\_$time_encoded_file.mp3";
391
392 $mp3_html = "<a class=\"mm\" href=\"$mp3_url\"><img border=1 src=\"_httpcimages_\/audio2.gif\"></a>";
393
394# my $baseexcerpt_url = "_httpcollection_/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}";
395
396##### $doc_obj->add_metadata ($section, "audioexcerpturl",$mp3_url);
397
398
399 }
400 else {
401 $mp3_html = "<img src=\"_httpcimages_\/audio2.gif\">";
402
403 }
404 }
405 }
406 else {
407 print STDERR "Warning: no media type defined.\n";
408 }
409
410
411 $only_num++;
412
413 $self->{'time_pos'}++;
414
415 my $table = "<table width=\"100%\" cellspacing=\"1\" cellpadding=\"0\"><tr valign=\"middle\">";
416 $table .= "<td>$avi_html</td>" if (defined $avi_html);
417 $table .= "<td>$mp3_html</td>";
418 $table .= "<td>$time_encoded</td>";
419 $table .= "</tr></table>";
420
421 # my $line = "$front$avi_html&nbsp;$mp3_html&nbsp;$time_encoded$back";
422
423 my $line = "$front$table$back";
424
425 # Remember tape prefix for next call
426 $self->{'ptape'} = $tape;
427
428 return $line;
429}
430
431
432sub hyperlink_timing_info
433{
434 my ($self, $textref) = @_;
435
436 my $media_type = $self->{'media_type'};
437 my $media_dir = $self->{'media_dir'};
438 my $media_root = $self->{'media_root'};
439
440 my $front_re = "<p class=Timing><span\\s+.*?>";
441 my $tape_re = "T\\d+:";
442 my $tt_re = "\\d\\d";
443 my $back_re = ".*?<\\/span>";
444
445 my $time_match_re = "$front_re$tt_re:$tt_re:$tt_re$back_re(?:\:$tt_re)?";
446 # my $time_sub_re = "($front_re)($tape_re)? ?($tt_re):($tt_re):($tt_re)(?:\:$tt_re)?($back_re)";
447
448 my $tape_match_re = "$front_re($tape_re)? ?$tt_re:$tt_re:$tt_re(?:\:$tt_re)?$back_re";
449 my $tape_sub_re = "($front_re)($tt_re):($tt_re):($tt_re)(?:\:$tt_re)?($back_re)";
450
451
452
453 my @time_seq = ($$textref =~ m/$time_match_re/sgi);
454
455 # artifically add tape information into all time indexes
456 my $extrapolate_tape = "";
457 my $num_seq = scalar(@time_seq);
458 for (my $i=0; $i<$num_seq; $i++) {
459 my ($curr_tape) = ($time_seq[$i] =~ m/$tape_match_re/sgi);
460 if (!defined $curr_tape) {
461 $time_seq[$i] =~ s/$tape_sub_re/$1$extrapolate_tape$2:$3:$4$5/sgi;
462 }
463 else {
464 if ($curr_tape ne $extrapolate_tape) {
465 $extrapolate_tape = $curr_tape;
466 }
467 }
468 }
469
470
471 $self->{'time_seq'} = \@time_seq;
472 $self->{'time_pos'} = 0;
473
474 $$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;
475
476
477 # knock out any div tags as they interfere with document broken up into sections
478 $$textref =~ s/<\/?div.*?>//gi;
479
480 # Embedded word style infomation is lost by HTMLPlug => make Question
481 # style use HTML italics
482
483 $$textref =~ s/<p class=\"Question\">(.*?)<\/p>/<p><i>$1<\/i><\/p>/gsi;
484
485}
486
487
488
489sub store_block_files
490{
491 my $self =shift (@_);
492 my ($filename_full_path, $block_hash) = @_;
493
494 # Would be better if this were tied to particular HTML docs that
495 # this plugin has processed.
496
497 # For now block all files native to DVD format
498
499 if (($filename_full_path =~ m/\.(IFO|BUP)$/) # block info and backup-info data
500 || ($filename_full_path =~ m/VIDEO_TS\..*?$/) # block top-level files
501 || ($filename_full_path =~ m/VTS_\d\d_\d\.VOB$/) #
502 ) {
503
504 $block_hash->{'file_blocks'}->{$filename_full_path} = 1;
505 }
506}
507
508sub read_block {
509 my $self = shift (@_);
510
511 my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
512
513 print STDERR "***** TimedHTMLPlugin read_block\n";
514
515 my $filename = $file;
516 $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
517
518 if (($filename =~ m/\.(IFO|BUP)$/) # block info and backup-info data
519 || ($filename =~ m/VIDEO_TS\..*?$/) # block top-level files
520 || ($filename =~ m/VTS_\d\d_\d\.VOB$/) #
521 ) {
522 $self->{'num_blocked'} ++;
523 return (0,undef); # blocked
524 }
525
526
527##### || ($filename =~ m/VTS_\d\d_0\.VOB$/) # block menu item for this track
528
529
530 if (defined $self->{'file_blocks'}->{$filename} && $self->{'file_blocks'}->{$filename} == 1){
531 $self->{'num_blocked'} ++;
532 return (0,undef); # blocked
533 }
534
535
536 if (defined $self->{'re_file_block'}) {
537 my $re_file_blocks = $self->{'re_file_block'};
538 foreach my $re_file_block (@$re_file_blocks) {
539### print STDERR "**** re file block: $filename =~ m $re_file_block\n";
540 if ($filename =~ m/$re_file_block/) {
541### print STDERR "*** blocking $filename\n";
542
543 $self->{'num_blocked'} ++;
544 return (0,undef); # blocked
545 }
546 }
547 }
548
549
550 return $self->SUPER::read_block(@_);
551
552}
553
554
555sub read_file {
556 my $self = shift @_;
557 my ($filename, $encoding, $language, $textref) = @_;
558
559 $only_num = 0;
560
561 $self->SUPER::read_file(@_);
562
563 my $metatable_store = $self->extract_metadata_table($textref);
564 $self->{'metatable_store'} = $metatable_store;
565
566 my ($root, $dirname, $suffix)
567 = &File::Basename::fileparse($filename, "\\.[^\\.]+\$");
568
569 # media defaults
570 my $media_type = undef;
571 my $media_dir = $root;
572 ## my $media_root = "VTS_%02d_%02d";
573 my $media_root = "VTS";
574
575 if (defined $metatable_store->{'GS.Media'}) {
576 $media_type = $metatable_store->{'GS.Media'};
577 $media_type = lc($media_type);
578 }
579 if (defined $metatable_store->{'GS.MediaDirectory'}) {
580 $media_dir = $metatable_store->{'GS.MediaDirectory'};
581 }
582 if (defined $metatable_store->{'GS.MediaRoot'}) {
583 $media_root = $metatable_store->{'GS.MediaRoot'};
584 }
585
586 $self->{'media_type'} = $media_type;
587 $self->{'media_dir'} = $media_dir;
588 $self->{'media_root'} = $media_root;
589
590 my $media_base_dir = &util::filename_cat($dirname,$media_dir);
591 $self->{'media_base_dir'} = $media_base_dir;
592
593 $self->{'vob_duration_info'} = &videoconvert::vob_durations($media_base_dir,"1",$self->{'outhandle'});
594
595## $self->hyperlink_timing_info($textref);
596
597 # Convert entities to their UTF8 equivalents
598 $$textref =~ s/&(lt|gt|amp|quot|nbsp);/&z$1;/go;
599 $$textref =~ s/&([^;]+);/&ghtml::getcharequiv($1,1)/gseo;
600 $$textref =~ s/&z(lt|gt|amp|quot|nbsp);/&$1;/go;
601}
602
603
604sub streamable_video
605{
606 my $self = shift (@_);
607
608 my ($base_dir,$filename,$doc_obj,$section) = @_;
609
610 my $outhandle = $self->{'outhandle'};
611 my $verbosity = $self->{'verbosity'};
612
613 my $media_base_dir = $self->{'media_base_dir'};
614
615 #---
616 # Determine size of input video
617
618 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
619
620 my $media_type = $self->{'media_type'};
621 my $media_dir = $self->{'media_dir'};
622 my $media_root = $self->{'media_root'};
623
624 my $tape_num = "1";
625
626 my $src_file;
627 my $src_filename;
628
629 if ($media_type eq "video") {
630 $src_file = "$media_root\_01_$tape_num.VOB";
631 $src_filename
632 = &util::filename_cat($media_base_dir, $src_file);
633 }
634 elsif ($media_type =~ m/^audio$/) {
635 $src_file = "$media_root\_Tape$tape_num.mp3";
636 $src_filename
637 = &util::filename_cat($media_base_dir, $src_file);
638 }
639 else {
640 print STDERR "Warning: Unrecognised media type: $media_type\n";
641 }
642
643 if (-e $src_filename) {
644 $self->{'file_blocks'}->{$src_filename} = 1;
645
646 my $re_file_block = $src_filename;
647 $re_file_block =~ s/_01_$tape_num.VOB$/_\\d+_\\d+.VOB\$/;
648
649
650 push(@{$self->{'re_file_block'}},$re_file_block);
651 }
652
653 my ($video_type, $video_width, $video_height, $video_duration, $video_size,
654 $vcodec,$vfps,$atype,$afreq,$achan,$arate)
655 = &videoconvert::identify($src_filename, $outhandle, $verbosity);
656
657 if ($vfps eq "unknown") {
658 print $outhandle "Unknown framerate, defaulting to 25 frames per second.\n";
659 $vfps = 25;
660 }
661
662### print STDERR "*** video duration = $video_duration\n";
663 my ($dur_hour,$dur_min,$dur_sec)
664 = ($video_duration =~ m/(\d+):(\d+):(\d+\.\d+)/);
665 my $total_dur_secs = $dur_hour*3600 + $dur_min*60 + $dur_sec;
666
667 $self->{'video-fps'} = $vfps;
668 $self->{'num-total-frames'} = $total_dur_secs * $vfps;
669
670
671 # shorten duration prcessed for experimentation purposes
672 my $exp_duration = undef;
673
674 my $video_excerpt_duration = $self->{'video_excerpt_duration'};
675
676 print STDERR "**** video duration (secs) = $total_dur_secs\n";
677
678
679 if ((defined $video_excerpt_duration) && ($video_excerpt_duration ne "")) {
680 $exp_duration = $video_excerpt_duration;
681 my ($hh,$mm,$ss,$ms) = ($exp_duration =~ m/^(\d\d):(\d\d):(\d\d)\.?(\d\d)?/);
682 my $excerpt_dur_in_secs = $hh * 3600 + $mm * 60 + $ss;
683
684 if ($excerpt_dur_in_secs < $total_dur_secs) {
685 $self->{'num-total-frames'} = $excerpt_dur_in_secs * $vfps; # override calculation for full length duration
686 }
687 else {
688 # clip is already shorter than requested video excerpt duration
689 # set exp_duration back to undefined
690 $exp_duration = undef;
691 }
692 }
693
694 print $outhandle "TimedHTMLPlug: Preparing video files associated with $filename for HTMLPlug\n";
695
696 if (defined $exp_duration)
697 {
698 print $outhandle "Only encoding first $exp_duration of video.\n";
699 $self->{'exp_duration'} = $exp_duration;
700 }
701
702
703 my $videoconvert
704 = new videoconvert($base_dir,$src_filename,$verbosity,$outhandle,$exp_duration);
705 $self->{'videoconvert'} = $videoconvert;
706
707 #---
708 # Generate the Flash FLV format for streaming purposes
709
710 my $streaming_bitrate = "256k"; # used to be 192k
711 my $streaming_size = "360"; # used to be 352 (CIF?)
712 my $streaming_achan = "1";
713 my $streaming_arate = "44100";
714 my $streaming_quality = "high";
715
716 #---
717 # Convert video to flash
718 #---
719 my ($stream_cmd,$oflash_filename,$oflash_file)
720 = $videoconvert->stream_cmd($src_filename,
721 $video_width,$video_height,
722 $streaming_quality, $streaming_bitrate, $streaming_size,
723 $streaming_achan, $streaming_arate);
724
725 my $streamable_options = { @{$videoconvert->{'ffmpeg_monitor'}},
726 'message_prefix' => "Stream",
727 'message' => "Generating streamable video: $oflash_file" };
728
729 my ($streamable_regenerated,$streamable_result,$streamable_had_error)
730 = $videoconvert->run_cached_general_cmd($stream_cmd,$oflash_filename,$streamable_options);
731
732 $self->{'streamable_regenerated'} = $streamable_regenerated;
733
734 if (!$streamable_had_error) {
735 #---
736 # Make video seekable
737 #---
738 my ($streamseekable_cmd,$ostreamseekable_filename) = $videoconvert->streamseekable_cmd($oflash_filename);
739
740 my $streamseekable_options = { @{$videoconvert->{'flvtool2_monitor'}},
741 'message_prefix' => "Stream Seekable",
742 'message' => "Reprocessing video stream to be seekable by timeline: $oflash_file" };
743
744 if ($streamable_regenerated) {
745 $videoconvert->run_general_cmd($streamseekable_cmd,$streamseekable_options);
746 }
747
748 my $streamable_url = $oflash_file;
749## $streamable_url =~ s/ /%20/g;
750
751 $doc_obj->add_metadata ($section, "streamablevideo", $streamable_url);
752 $doc_obj->associate_file($oflash_filename,$oflash_file,"video/flash",
753 $section);
754 }
755
756 #
757 # FlowPlayer.swf height+22 pixels
758 # FlowPlayerBlack.swf height+16 pixels
759 # FlowPlayerThermo.swf height+16 pixels
760 # FlowPlayerWhite.swf height+26 pixels
761 $doc_obj->add_metadata ($section, "flashwidth", $video_width);
762 $doc_obj->add_metadata ($section, "flashheight", $video_height + 22 + 100);
763
764 my $base_url = "_httpstreamserverprefix_/collect/[collection]/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}/";
765
766 $doc_obj->add_metadata ($section, "baseurl",$base_url);
767
768 $self->{'oflash_file'} = $oflash_file;
769 $self->{'oflash_filename'} = $oflash_filename;
770
771}
772
773
774
775sub add_cuepoints
776{
777 my ($self) = shift @_;
778 my ($doc_obj) = @_;
779
780 my $section = $doc_obj->get_top_section();
781 my $chapters = $doc_obj->get_children($section);
782
783
784 # open file
785 my $output_dir = $self->{'videoconvert'}->{'cached_dir'};
786 my $cue_filename = &util::filename_cat($output_dir,"on_cue.xml");
787
788 open(CUEOUT,">$cue_filename")
789 || die "Unable to open $cue_filename: $!\n";
790 print CUEOUT "<tags>\n";
791
792
793 my $cc = 0;
794
795 foreach my $chap (@$chapters)
796 {
797 $cc++;
798
799 my $chap_text = $doc_obj->get_text($chap);
800
801 my @cuepoints
802 = ($chap_text =~ m/<p class=Timing><span\s+.*?>(?:T\d+:)? ?(\d\d:\d\d:\d\d)(?:\:\d\d)?/gsi);
803
804 my $count = 0;
805
806 foreach my $cuepoint (@cuepoints)
807 {
808 my ($hh,$mm,$ss) = ($cuepoint =~ m/(\d\d):(\d\d):(\d\d)/);
809
810 my $cuept_insecs = $self->hms_to_secs($hh,$mm,$ss);
811
812 if ($cuept_insecs < 2) {
813 $cuept_insecs += 2;
814 }
815 my $cuept_inmsecs = 1000 * $cuept_insecs;
816
817 $doc_obj->add_metadata($section,"cuepoint",$cuept_inmsecs);
818 my $chap_title = $doc_obj->get_metadata_element($chap,"Title");
819
820 # Navigation point (used in seeking)
821# print CUEOUT " <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
822# print CUEOUT " <name>$chap_title</name>\n";
823# print CUEOUT " <timestamp>$cuept_inmsecs</timestamp>\n";
824# print CUEOUT " <parameters>\n";
825# print CUEOUT " <thumb>dummy</thumb>\n";
826# print CUEOUT " <sectionnum>$chap</sectionnum>\n";
827# print CUEOUT " <subsectionnum>$count</subsectionnum>\n";
828# print CUEOUT " <cuept>$cuept_inmsecs</cuept>\n";
829# print CUEOUT " </parameters>\n";
830# print CUEOUT " <type>navigation</type>\n";
831# print CUEOUT " </metatag>\n";
832
833
834# print CUEOUT " <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
835# print CUEOUT " <name>$chap_title</name>\n";
836# print CUEOUT " <timestamp>$cuept_inmsecs</timestamp>\n";
837# print CUEOUT " <parameters>\n";
838# print CUEOUT " <thumb>foo.jpg</thumb>\n";
839# print CUEOUT " </parameters>\n";
840# print CUEOUT " <type>navigation</type>\n";
841# print CUEOUT " </metatag>\n";
842
843 if ($count==0)
844 {
845 # Event (used to hook in to javascipt callback)
846 # Only do for the first in each chapter
847
848 print CUEOUT " <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
849## print CUEOUT " <name>Test $cc</name>\n";
850 print CUEOUT " <name>$chap_title</name>\n";
851 print CUEOUT " <timestamp>$cuept_inmsecs</timestamp>\n";
852 print CUEOUT " <parameters>\n";
853 print CUEOUT " <cuept>$cuept_inmsecs</cuept>\n";
854 print CUEOUT " <sectionnum>$chap</sectionnum>\n";
855 print CUEOUT " </parameters>\n";
856 print CUEOUT " <type>event</type>\n";
857## print CUEOUT " <type>actionscript</type>\n";
858 print CUEOUT " </metatag>\n";
859 }
860
861 $count++;
862 }
863 }
864
865
866 print CUEOUT "</tags>\n";
867 close(CUEOUT);
868
869 my $videoconvert = $self->{'videoconvert'};
870 my $oflash_filename = $self->{'oflash_filename'};
871 my $oflash_file = $self->{'oflash_file'};
872
873 my ($streamcuepts_cmd,$ostreamcuepts_filename) = $videoconvert->streamcuepts_cmd($oflash_filename);
874
875 my $verbosity = $self->{'verbosity'};
876 my $outhandle = $self->{'outhandle'};
877
878 my $streamcuepts_options = { @{$videoconvert->{'flvtool2_monitor'}},
879 'message_prefix' => "Stream Cue Points",
880 'message' => "Reprocessing video stream to add cuepoints on timeline: $oflash_file" };
881
882 my $streamable_regenerated = $self->{'streamable_regenerated'};
883
884 if ($streamable_regenerated) {
885 $videoconvert->run_general_cmd($streamcuepts_cmd,$streamcuepts_options);
886 }
887
888
889
890}
891
892
893
894sub process {
895 my $self = shift (@_);
896 my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli) = @_;
897
898 my $filename = $file;
899 $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
900
901 my $top_section = $doc_obj->get_top_section();
902
903 $self->streamable_video($base_dir,$filename,$doc_obj,$top_section);
904
905 $self->hyperlink_timing_info($textref);
906
907 foreach my $mp3_excerpt (@{$self->{'mp3_excerpts'}}) {
908 my $omp3_file = $mp3_excerpt->{'omp3_file'};
909 my $omp3_filename = $mp3_excerpt->{'omp3_filename'};
910
911 $doc_obj->associate_file($omp3_filename,$omp3_file,"audio/mp3",
912 $top_section);
913 }
914 $self->{'mp3_excerpts'} = undef;
915
916 my $metatable_store = $self->{'metatable_store'};
917 foreach my $metaname (keys %$metatable_store) {
918 my $metadata = $metatable_store->{$metaname};
919 $doc_obj->add_metadata($top_section,$metaname,$metadata);
920 }
921 $self->{'metatable_store'} = undef;
922
923 my $ret_val = $self->SUPER::process(@_);
924
925 $self->add_cuepoints($doc_obj);
926
927
928 return $ret_val;
929
930}
931
932
933
934sub replace_images {
935 my $self = shift (@_);
936 my ($front, $link, $back, $base_dir,
937 $file, $doc_obj, $section) = @_;
938
939 if ($link =~ m/^"?_.*?_"?\//) {
940 # variety of greenstone macro, so let through unchanged
941 return $front . $link . $back ;
942 }
943
944 return $self->SUPER::replace_images(@_);
945}
946
947
948
949
950
951sub replace_href_links {
952 my $self = shift (@_);
953 my ($front, $link, $back, $base_dir, $file, $doc_obj, $section) = @_;
954
955
956 if ($link =~ m/^"?_.*?_"?/) {
957 # variety of greenstone macro, so let through unchanged
958 return $front . $link . $back ;
959 }
960
961 return $self->SUPER::replace_href_links(@_);
962}
963
9641;
Note: See TracBrowser for help on using the repository browser.