source: extensions/gsdl-video/trunk/perllib/plugins/TimedHTMLPlugin.pm@ 19828

Last change on this file since 19828 was 19828, checked in by davidb, 12 years ago

Continued development of plugins to work smoothly with Flash player

File size: 25.1 KB
Line 
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 HTMLPlugin;
31use VideoConverter;
32
33sub BEGIN {
34 @TimedHTMLPlugin::ISA = ('HTMLPlugin', 'VideoConverter');
35}
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"}},$options)};
66
67 new VideoConverter($pluginlist, $inputargs, $hashArgOptLists);
68
69 my $self = (defined $hashArgOptLists)
70 ? new HTMLPlugin($pluginlist,$inputargs,$hashArgOptLists)
71 : new HTMLPlugin($pluginlist,$inputargs);
72
73 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
74
75 my $collect_bin = &util::filename_cat($collect_dir,"bin");
76 my $collect_script = &util::filename_cat($collect_bin,"script");
77
78 $ENV{'PATH'} .= ":" if (defined $ENV{'PATH'});
79 $ENV{'PATH'} .= "$collect_bin:$collect_script";
80
81 return bless $self, $class;
82}
83
84sub begin {
85 my $self = shift (@_);
86 my ($pluginfo, $base_dir, $processor, $maxdocs) = @_;
87
88 $self->SUPER::begin(@_);
89 $self->VideoConverter::begin(@_);
90}
91
92
93sub init {
94 my $self = shift (@_);
95 my ($verbosity, $outhandle, $failhandle) = @_;
96
97 $self->SUPER::init(@_);
98 $self->VideoConverter::init(@_);
99}
100
101
102sub html_to_text
103{
104 my ($self, $text) = @_;
105
106 $text =~ s/<\/?[^>]*>//g;
107
108 $text =~ s/&nbsp;/ /g;
109
110 $text =~ s/\s+/ /gs;
111 $text =~ s/^\s+//;
112 $text =~ s/\s+$//;
113
114 return $text;
115}
116
117
118sub extract_metadata_table
119{
120 my ($self, $textref) = @_;
121
122 my $metatable_store = {};
123
124 my $metatable_re = "<table([^>]*)>(.*?<p[^>]+class=\"?Metadata\"?[^>]*>.*?)<\\/table>";
125
126 if ($$textref =~ m/$metatable_re/gsi) {
127 my $metatable_attr = $1;
128 my $metatable_body = $2;
129
130 my @tr_list = ($metatable_body =~ m/(<tr[^>]*>.*?<\/tr>)/gsi);
131
132 my @filtered_tr_list = ();
133
134 foreach my $tr (@tr_list) {
135
136 my $in_filtered_tr = 1;
137
138 my @td_list = ($tr =~ m/<td[^>]*>(.*?)<\/td>/gsi);
139 my $td_list_num = scalar(@td_list);
140
141 if ($td_list_num == 2) {
142 my $meta_name = $self->html_to_text($td_list[0]);
143 my $meta_value = $self->html_to_text($td_list[1]);
144
145 $meta_name =~ s/\s*//g;
146
147
148 if ($meta_value =~ m/^(\s*|\?+)$/) {
149 $in_filtered_tr = 0;
150 }
151 else {
152 my $meta_name_label = $meta_name;
153 $meta_name_label =~ s/\s+//g;
154
155 $metatable_store->{$meta_name_label} = $meta_value;
156
157 if ($meta_name_label =~ m/^GS\./) {
158 # even though we want to store this as metadata, we
159 # don't want this going into table presented at top of document
160 $in_filtered_tr = 0;
161 }
162
163 }
164 }
165 else {
166 print STDERR "Warning: Metadata table does not consist of two cells (metadata name : metadata value)\n";
167 print STDERR " Skipping\n";
168 }
169
170
171 if ($in_filtered_tr) {
172 push(@filtered_tr_list,$tr);
173 }
174 }
175
176 my $filtered_tr_block = join("\n",@filtered_tr_list);
177 my $filtered_table = "<table$metatable_attr>$filtered_tr_block</table>";
178
179
180 ### my $metatable_re = "<table[^>]*>.*?<p class=\"?Metadata\"?>.*?<\\/table>";
181
182### print STDERR "*** filtered table = $filtered_table\n";
183
184 $$textref =~ s/$metatable_re/$filtered_table/si;
185
186 }
187
188 return $metatable_store;
189
190}
191
192
193
194
195
196my $only_num = 0;
197my $only_limit = 100;
198
199sub hms_to_secs
200{
201 my $self = shift @_;
202 my ($hh,$mm,$ss) = @_;
203
204 return $hh*3600 + $mm*60 + $ss;
205}
206
207
208
209sub timed_event
210{
211 my $self = shift (@_);
212
213 my ($front, $tape, $hh, $mm, $ss, $back) = @_;
214
215 my $time_encoded = "$hh:$mm:$ss";
216 my $time_encoded_file = "$hh$mm$ss";
217
218 print STDERR "***** time endocde = $time_encoded\n";
219
220 my $time_pos = $self->{'time_pos'};
221 my $time_num = scalar(@{$self->{'time_seq'}});
222
223#### my $videoconvert = $self->{'videoconvert'};
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: $media_type\n";
292 }
293
294
295 # Embed link to allow video to stream from marked time event
296 if ($media_type eq "video") {
297
298 # video excerpt
299
300 $avi_html .= "<a class=\"mm\" href=\"javascript:videoplayerseek($hh,$mm,$ss)\"><img border=1 src=\"_httpvideoimages_/ivideo.gif\"></a>";
301
302 # save 'time-stamp' as metadata???
303
304 }
305
306 # Do similar for audio.
307 # Obviously, pure audio needs to be handled here, but also
308 # video (and link in to its audio track)
309
310 if ($media_type =~ m/^(video|audio)$/) {
311
312
313 my ($voa_root) = ($src_file =~ m/^(.*)\..*?$/);
314
315 my $mp3_url = "javascript:audioplayerseek($hh,$mm,$ss)";
316 $mp3_html = "<a class=\"mm\" href=\"$mp3_url\"><img border=1 src=\"_httpvideoimages_/iaudio.gif\"></a>";
317
318# my $baseexcerpt_url = "_httpcollection_/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}";
319
320 }
321 }
322 else {
323 print STDERR "Warning: no media type defined.\n";
324 }
325
326
327 $only_num++;
328
329 $self->{'time_pos'}++;
330
331 my $table = "<table width=\"100%\" cellspacing=\"1\" cellpadding=\"0\"><tr valign=\"middle\">";
332 $table .= "<td>$avi_html</td>" if (defined $avi_html);
333 $table .= "<td>$mp3_html</td>";
334 $table .= "<td>$time_encoded</td>";
335 $table .= "</tr></table>";
336
337 # my $line = "$front$avi_html&nbsp;$mp3_html&nbsp;$time_encoded$back";
338
339 my $line = "$front$table$back";
340
341 # Remember tape prefix for next call
342 $self->{'ptape'} = $tape;
343
344 return $line;
345}
346
347
348sub hyperlink_timing_info
349{
350 my ($self, $textref) = @_;
351
352 my $media_type = $self->{'media_type'};
353 my $media_dir = $self->{'media_dir'};
354 my $media_root = $self->{'media_root'};
355
356
357
358 ##my $front_re = "<p class=Timing>(?:<span\\s+.*?>)?";
359 my $front_re = "<p[^>]+class=\"?Timing(?:-.*?)?\"?[^>]*>(?:<span\\s+.*?>)?";
360 my $tape_re = "T\\d+:";
361 my $tt_re = "\\d\\d";
362 my $back_re = ".*?(?:<\\/span>\\s*)?(?:<\\/p>)";
363
364 my $time_match_re = "$front_re$tt_re:$tt_re:$tt_re$back_re(?:\:$tt_re)?";
365 # my $time_sub_re = "($front_re)($tape_re)? ?($tt_re):($tt_re):($tt_re)(?:\:$tt_re)?($back_re)";
366
367 my $tape_match_re = "$front_re($tape_re)? ?$tt_re:$tt_re:$tt_re(?:\:$tt_re)?$back_re";
368 my $tape_sub_re = "($front_re)($tt_re):($tt_re):($tt_re)(?:\:$tt_re)?($back_re)";
369
370
371
372 my @time_seq = ($$textref =~ m/$time_match_re/sgi);
373
374 print STDERR "***** got ", scalar(@time_seq), " matches\n";
375
376 # artifically add tape information into all time indexes
377 my $extrapolate_tape = "";
378 my $num_seq = scalar(@time_seq);
379 for (my $i=0; $i<$num_seq; $i++) {
380 my ($curr_tape) = ($time_seq[$i] =~ m/$tape_match_re/sgi);
381 if (!defined $curr_tape) {
382 $time_seq[$i] =~ s/$tape_sub_re/$1$extrapolate_tape$2:$3:$4$5/sgi;
383 }
384 else {
385 if ($curr_tape ne $extrapolate_tape) {
386 $extrapolate_tape = $curr_tape;
387 }
388 }
389 }
390
391
392 $self->{'time_seq'} = \@time_seq;
393 $self->{'time_pos'} = 0;
394
395 # my $front_re = "<p[^>]+class=\"?Timing(?:-.*?)?\"?[^>]*>(?:<span\\s+.*?>)?";
396
397 $$textref =~ s/($front_re)(T\d+:)? ?(\d\d):(\d\d):(\d\d)(?:\:\d\d)?.*?((?:<\/span>)?\s*<\/p>)/$self->timed_event($1,$2,$3,$4,$5,$6)/sgie;
398
399 ##$$textref =~ s/(<p class=Timing><span\s+.*?>)(T\d+:)? ?(\d\d):(\d\d):(\d\d)(?:\:\d\d)?.*?(<\/span>)/$self->timed_event($1,$2,$3,$4,$5,$6)/sgie;
400
401
402 # knock out any div tags as they interfere with document broken up into sections
403 $$textref =~ s/<\/?div.*?>//gi;
404
405 # Embedded word style infomation is lost by HTMLPlug => make Question
406 # style use HTML italics
407
408 $$textref =~ s/<p class=\"Question\">(.*?)<\/p>/<p><i>$1<\/i><\/p>/gsi;
409
410}
411
412
413
414sub store_block_files
415{
416 my $self =shift (@_);
417 my ($filename_full_path, $block_hash) = @_;
418
419 # Would be better if this were tied to particular HTML docs that
420 # this plugin has processed.
421
422 # For now block all files native to DVD format
423
424 if (($filename_full_path =~ m/\.(IFO|BUP)$/) # block info and backup-info data
425 || ($filename_full_path =~ m/VIDEO_TS\..*?$/) # block top-level files
426 || ($filename_full_path =~ m/VTS_\d\d_\d\.VOB$/) #
427 ) {
428
429 $block_hash->{'file_blocks'}->{$filename_full_path} = 1;
430 }
431}
432
433sub read_block {
434 my $self = shift (@_);
435
436 my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
437
438 print STDERR "***** TimedHTMLPlugin read_block\n";
439
440 my $filename = $file;
441 $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
442
443 if (($filename =~ m/\.(IFO|BUP)$/) # block info and backup-info data
444 || ($filename =~ m/VIDEO_TS\..*?$/) # block top-level files
445 || ($filename =~ m/VTS_\d\d_\d\.VOB$/) #
446 ) {
447 $self->{'num_blocked'} ++;
448 return (0,undef); # blocked
449 }
450
451
452##### || ($filename =~ m/VTS_\d\d_0\.VOB$/) # block menu item for this track
453
454
455 if (defined $self->{'file_blocks'}->{$filename} && $self->{'file_blocks'}->{$filename} == 1){
456 $self->{'num_blocked'} ++;
457 return (0,undef); # blocked
458 }
459
460
461 if (defined $self->{'re_file_block'}) {
462 my $re_file_blocks = $self->{'re_file_block'};
463 foreach my $re_file_block (@$re_file_blocks) {
464### print STDERR "**** re file block: $filename =~ m $re_file_block\n";
465 if ($filename =~ m/$re_file_block/) {
466### print STDERR "*** blocking $filename\n";
467
468 $self->{'num_blocked'} ++;
469 return (0,undef); # blocked
470 }
471 }
472 }
473
474
475 return $self->SUPER::read_block(@_);
476
477}
478
479
480sub read_file {
481 my $self = shift @_;
482 my ($filename, $encoding, $language, $textref) = @_;
483
484 $only_num = 0;
485
486 $self->SUPER::read_file(@_);
487
488 my $metatable_store = $self->extract_metadata_table($textref);
489 $self->{'metatable_store'} = $metatable_store;
490
491 my ($root, $dirname, $suffix)
492 = &File::Basename::fileparse($filename, "\\.[^\\.]+\$");
493
494 # media defaults
495 my $media_type = undef;
496 my $media_dir = $root;
497 ## my $media_root = "VTS_%02d_%02d";
498 my $media_root = "VTS";
499
500 if (defined $metatable_store->{'GS.Media'}) {
501 $media_type = $metatable_store->{'GS.Media'};
502 $media_type = lc($media_type);
503 }
504 if (defined $metatable_store->{'GS.MediaDirectory'}) {
505 $media_dir = $metatable_store->{'GS.MediaDirectory'};
506 }
507 if (defined $metatable_store->{'GS.MediaRoot'}) {
508 $media_root = $metatable_store->{'GS.MediaRoot'};
509 }
510
511 $self->{'media_type'} = $media_type;
512 $self->{'media_dir'} = $media_dir;
513 $self->{'media_root'} = $media_root;
514
515 my $media_base_dir = &util::filename_cat($dirname,$media_dir);
516 $self->{'media_base_dir'} = $media_base_dir;
517
518 $self->{'vob_duration_info'} = &VideoConverter::vob_durations($media_base_dir,"1",$self->{'outhandle'});
519
520## $self->hyperlink_timing_info($textref);
521
522 # Convert entities to their UTF8 equivalents
523 $$textref =~ s/&(lt|gt|amp|quot|nbsp);/&z$1;/go;
524 $$textref =~ s/&([^;]+);/&ghtml::getcharequiv($1,1)/gseo;
525 $$textref =~ s/&z(lt|gt|amp|quot|nbsp);/&$1;/go;
526}
527
528
529sub streamable_video
530{
531 my $self = shift (@_);
532
533 my ($base_dir,$filename,$doc_obj,$section) = @_;
534
535 my $outhandle = $self->{'outhandle'};
536 my $verbosity = $self->{'verbosity'};
537
538 my $media_base_dir = $self->{'media_base_dir'};
539
540 #---
541 # Determine size of input video
542
543 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
544
545 my $media_type = $self->{'media_type'};
546 my $media_dir = $self->{'media_dir'};
547 my $media_root = $self->{'media_root'};
548
549 my $tape_num = "1";
550
551 my $src_file;
552 my $src_filename;
553
554 if ($media_type eq "video") {
555 $src_file = "$media_root\_01_$tape_num.VOB";
556 $src_filename
557 = &util::filename_cat($media_base_dir, $src_file);
558 }
559 elsif ($media_type =~ m/^audio$/) {
560 $src_file = "$media_root\_Tape$tape_num.mp3";
561 $src_filename
562 = &util::filename_cat($media_base_dir, $src_file);
563 }
564 else {
565 print STDERR "Warning: Unrecognised media type: $media_type\n";
566 }
567
568 if (-e $src_filename) {
569 $self->{'file_blocks'}->{$src_filename} = 1;
570
571 my $re_file_block = $src_filename;
572 $re_file_block =~ s/_01_$tape_num.VOB$/_\\d+_\\d+.VOB\$/;
573
574
575 push(@{$self->{'re_file_block'}},$re_file_block);
576 }
577
578 my ($video_type, $video_width, $video_height, $video_duration, $video_size,
579 $vcodec,$vfps,$atype,$afreq,$achan,$arate)
580 = &VideoConverter::identify($src_filename, $outhandle, $verbosity);
581
582 if ($vfps eq "unknown") {
583 print $outhandle "Unknown framerate, defaulting to 25 frames per second.\n";
584 $vfps = 25;
585 }
586
587### print STDERR "*** video duration = $video_duration\n";
588 my ($dur_hour,$dur_min,$dur_sec)
589 = ($video_duration =~ m/(\d+):(\d+):(\d+\.\d+)/);
590 my $total_dur_secs = $dur_hour*3600 + $dur_min*60 + $dur_sec;
591
592 $self->{'video-fps'} = $vfps;
593 $self->{'num-total-frames'} = $total_dur_secs * $vfps;
594
595
596 # shorten duration prcessed for experimentation purposes
597 my $exp_duration = undef;
598
599 my $video_excerpt_duration = $self->{'video_excerpt_duration'};
600
601 print STDERR "**** video/audio duration (secs) = $total_dur_secs\n";
602
603
604 if ((defined $video_excerpt_duration) && ($video_excerpt_duration ne "")) {
605 $exp_duration = $video_excerpt_duration;
606 my ($hh,$mm,$ss,$ms) = ($exp_duration =~ m/^(\d\d):(\d\d):(\d\d)\.?(\d\d)?/);
607 my $excerpt_dur_in_secs = $hh * 3600 + $mm * 60 + $ss;
608
609 if ($excerpt_dur_in_secs < $total_dur_secs) {
610 $self->{'num-total-frames'} = $excerpt_dur_in_secs * $vfps; # override calculation for full length duration
611 }
612 else {
613 # clip is already shorter than requested video excerpt duration
614 # set exp_duration back to undefined
615 $exp_duration = undef;
616 }
617 }
618
619 print $outhandle "TimedHTMLPlug: Preparing video files associated with $filename for HTMLPlug\n";
620
621 if (defined $exp_duration)
622 {
623 print $outhandle "Only encoding first $exp_duration of video.\n";
624 $self->{'exp_duration'} = $exp_duration;
625 }
626
627
628 $self->init_cache_for_file($src_filename);
629
630 # TimedHTML streaming isn't as complicated as VideoPlugin or AudioPlugin
631 # => src file is never converted beforehand to another type
632
633 my $convertto_regenerated = 0;
634 my $originalfilename = $src_filename;
635
636 my $streamable_regenerated = 0;
637
638 if ($media_type eq "audio") {
639 $streamable_regenerated =
640 $self->enable_audio_streaming($doc_obj,
641 $originalfilename,$src_filename,
642 $convertto_regenerated);
643 }
644 else {
645 # generate streamable video and audio
646 $streamable_regenerated =
647 $self->enable_full_streaming($doc_obj,
648 $originalfilename,$src_filename,
649 $convertto_regenerated,
650 $video_width,$video_height);
651 }
652
653 $self->{'streamable_regenerated'} = $streamable_regenerated;
654
655 my $base_url = "_httpstreamserverprefix_/collect/[collection]/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}/";
656
657 $doc_obj->add_metadata ($section, "baseurl",$base_url);
658
659 return;
660
661#*********************
662 #---
663 # Generate the Flash FLV format for streaming purposes
664
665 my $streaming_bitrate = "256k"; # used to be 192k
666 my $streaming_size = "360"; # used to be 352 (CIF?)
667 my $streaming_achan = "1";
668 my $streaming_arate = "44100";
669 my $streaming_quality = "high";
670
671 #---
672 # Convert video to flash
673 #---
674 my ($stream_cmd,$oflash_filename,$oflash_file)
675 = $self->stream_cmd($src_filename,
676 $video_width,$video_height,
677 $streaming_quality, $streaming_bitrate, $streaming_size,
678 $streaming_achan, $streaming_arate);
679
680 my $streamable_options = { @{$self->{'ffmpeg_monitor'}},
681 'message_prefix' => "Stream",
682 'message' => "Generating streamable video: $oflash_file" };
683
684 my ($streamable_regenerated2,$streamable_result,$streamable_had_error)
685 = $self->run_cached_general_cmd($stream_cmd,$oflash_filename,$streamable_options);
686
687 $self->{'streamable_regenerated2'} = $streamable_regenerated2;
688
689 if (!$streamable_had_error) {
690 #---
691 # Make video seekable
692 #---
693 my ($streamseekable_cmd,$ostreamseekable_filename) = $self->streamseekable_cmd($oflash_filename);
694
695 my $streamseekable_options = { @{$self->{'flvtool2_monitor'}},
696 'message_prefix' => "Stream Seekable",
697 'message' => "Reprocessing video stream to be seekable by timeline: $oflash_file" };
698
699 if ($streamable_regenerated2) {
700 $self->run_general_cmd($streamseekable_cmd,$streamseekable_options);
701 }
702
703 my $streamable_url = $oflash_file;
704## $streamable_url =~ s/ /%20/g;
705
706 $doc_obj->add_metadata ($section, "streamablevideo", $streamable_url);
707 $doc_obj->associate_file($oflash_filename,$oflash_file,"video/flash",
708 $section);
709 }
710
711 #
712 # FlowPlayer.swf height+22 pixels
713 # FlowPlayerBlack.swf height+16 pixels
714 # FlowPlayerThermo.swf height+16 pixels
715 # FlowPlayerWhite.swf height+26 pixels
716 if ($media_type eq "audio") {
717 $doc_obj->add_metadata ($section, "audioflashwidth", $video_width);
718 $doc_obj->add_metadata ($section, "audioflashheight", 22 + 100);
719 }
720 else {
721 $doc_obj->add_metadata ($section, "flashwidth", $video_width);
722 $doc_obj->add_metadata ($section, "flashheight", $video_height + 22 + 100);
723 }
724
725
726 my $base_url2 = "_httpstreamserverprefix_/collect/[collection]/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}/";
727
728 $doc_obj->add_metadata ($section, "baseurl",$base_url2);
729
730 $self->{'oflash_file'} = $oflash_file;
731 $self->{'oflash_filename'} = $oflash_filename;
732
733}
734
735
736
737sub add_cuepoints
738{
739 my ($self) = shift @_;
740 my ($doc_obj) = @_;
741
742 my $section = $doc_obj->get_top_section();
743 my $chapters = $doc_obj->get_children($section);
744
745
746 # open file
747 my $output_dir = $self->{'cached_dir'};
748 my $cue_filename = &util::filename_cat($output_dir,"on_cue.xml");
749
750 open(CUEOUT,">$cue_filename")
751 || die "Unable to open $cue_filename: $!\n";
752 print CUEOUT "<tags>\n";
753
754
755 my $cc = 0;
756
757 foreach my $chap (@$chapters)
758 {
759 $cc++;
760
761 my $chap_text = $doc_obj->get_text($chap);
762
763 my @cuepoints
764 = ($chap_text =~ m/<p class=Timing><span\s+.*?>(?:T\d+:)? ?(\d\d:\d\d:\d\d)(?:\:\d\d)?/gsi);
765
766 my $count = 0;
767
768 foreach my $cuepoint (@cuepoints)
769 {
770 my ($hh,$mm,$ss) = ($cuepoint =~ m/(\d\d):(\d\d):(\d\d)/);
771
772 my $cuept_insecs = $self->hms_to_secs($hh,$mm,$ss);
773
774 if ($cuept_insecs < 2) {
775 $cuept_insecs += 2;
776 }
777 my $cuept_inmsecs = 1000 * $cuept_insecs;
778
779 $doc_obj->add_metadata($section,"cuepoint",$cuept_inmsecs);
780 my $chap_title = $doc_obj->get_metadata_element($chap,"Title");
781
782 # Navigation point (used in seeking)
783# print CUEOUT " <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
784# print CUEOUT " <name>$chap_title</name>\n";
785# print CUEOUT " <timestamp>$cuept_inmsecs</timestamp>\n";
786# print CUEOUT " <parameters>\n";
787# print CUEOUT " <thumb>dummy</thumb>\n";
788# print CUEOUT " <sectionnum>$chap</sectionnum>\n";
789# print CUEOUT " <subsectionnum>$count</subsectionnum>\n";
790# print CUEOUT " <cuept>$cuept_inmsecs</cuept>\n";
791# print CUEOUT " </parameters>\n";
792# print CUEOUT " <type>navigation</type>\n";
793# print CUEOUT " </metatag>\n";
794
795
796# print CUEOUT " <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
797# print CUEOUT " <name>$chap_title</name>\n";
798# print CUEOUT " <timestamp>$cuept_inmsecs</timestamp>\n";
799# print CUEOUT " <parameters>\n";
800# print CUEOUT " <thumb>foo.jpg</thumb>\n";
801# print CUEOUT " </parameters>\n";
802# print CUEOUT " <type>navigation</type>\n";
803# print CUEOUT " </metatag>\n";
804
805 if ($count==0)
806 {
807 # Event (used to hook in to javascipt callback)
808 # Only do for the first in each chapter
809
810 print CUEOUT " <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
811## print CUEOUT " <name>Test $cc</name>\n";
812 print CUEOUT " <name>$chap_title</name>\n";
813 print CUEOUT " <timestamp>$cuept_inmsecs</timestamp>\n";
814 print CUEOUT " <parameters>\n";
815 print CUEOUT " <cuept>$cuept_inmsecs</cuept>\n";
816 print CUEOUT " <sectionnum>$chap</sectionnum>\n";
817 print CUEOUT " </parameters>\n";
818 print CUEOUT " <type>event</type>\n";
819## print CUEOUT " <type>actionscript</type>\n";
820 print CUEOUT " </metatag>\n";
821 }
822
823 $count++;
824 }
825 }
826
827
828 print CUEOUT "</tags>\n";
829 close(CUEOUT);
830
831#### my $videoconvert = $self->{'videoconvert'};
832 my $oflash_filename = $self->{'oflash_filename'};
833 my $oflash_file = $self->{'oflash_file'};
834
835 my ($streamcuepts_cmd,$ostreamcuepts_filename) = $self->streamcuepts_cmd($oflash_filename);
836
837 my $verbosity = $self->{'verbosity'};
838 my $outhandle = $self->{'outhandle'};
839
840 my $streamcuepts_options = { @{$self->{'flvtool2_monitor'}},
841 'message_prefix' => "Stream Cue Points",
842 'message' => "Reprocessing video stream to add cuepoints on timeline: $oflash_file" };
843
844 my $streamable_regenerated2 = $self->{'streamable_regenerated'};
845
846 if ($streamable_regenerated2) {
847 $self->run_general_cmd($streamcuepts_cmd,$streamcuepts_options);
848 }
849
850
851
852}
853
854
855
856sub process {
857 my $self = shift (@_);
858 my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli) = @_;
859
860 my $filename = $file;
861 $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
862
863 my $top_section = $doc_obj->get_top_section();
864
865 $self->streamable_video($base_dir,$filename,$doc_obj,$top_section);
866
867 $self->hyperlink_timing_info($textref);
868
869 foreach my $mp3_excerpt (@{$self->{'mp3_excerpts'}}) {
870 my $omp3_file = $mp3_excerpt->{'omp3_file'};
871 my $omp3_filename = $mp3_excerpt->{'omp3_filename'};
872
873 $doc_obj->associate_file($omp3_filename,$omp3_file,"audio/mp3",
874 $top_section);
875 }
876 $self->{'mp3_excerpts'} = undef;
877
878 my $metatable_store = $self->{'metatable_store'};
879 foreach my $metaname (keys %$metatable_store) {
880 my $metadata = $metatable_store->{$metaname};
881 $doc_obj->add_metadata($top_section,$metaname,$metadata);
882 }
883 $self->{'metatable_store'} = undef;
884
885 my $ret_val = $self->SUPER::process(@_);
886
887 $self->add_cuepoints($doc_obj);
888
889
890 return $ret_val;
891
892}
893
894
895
896sub replace_images {
897 my $self = shift (@_);
898 my ($front, $link, $back, $base_dir,
899 $file, $doc_obj, $section) = @_;
900
901 if ($link =~ m/^"?_.*?_"?\//) {
902 # variety of greenstone macro, so let through unchanged
903 return $front . $link . $back ;
904 }
905
906 return $self->SUPER::replace_images(@_);
907}
908
909
910
911
912
913sub replace_href_links {
914 my $self = shift (@_);
915 my ($front, $link, $back, $base_dir, $file, $doc_obj, $section) = @_;
916
917
918 if ($link =~ m/^"?_.*?_"?/) {
919 # variety of greenstone macro, so let through unchanged
920 return $front . $link . $back ;
921 }
922
923 return $self->SUPER::replace_href_links(@_);
924}
925
9261;
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