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

Revision 18897, 26.7 KB (checked in by davidb, 11 years ago)

Change from using videocoverter.pm to VideoConverter?.pm

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
30##use videoconvert;
31
32use HTMLPlugin;
33use VideoConverter;
34
35sub BEGIN {
36    @TimedHTMLPlugin::ISA = ('HTMLPlugin', 'VideoConverter');
37}
38
39
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"}},$options)};
68   
69    new VideoConverter($pluginlist, $inputargs, $hashArgOptLists);
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
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    $self->VideoConverter::init(@_);
101}
102
103
104sub html_to_text
105{
106    my ($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
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: $media_type\n";
292    }
293
294
295    if ($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)
366            = $self->audio_excerpt_cmd($src_filename,
367                           $hh,$mm,$ss,$excerpt_len);
368       
369        my $ae_options = { @{$self->{'ffmpeg_monitor'}},
370                   'message_prefix' => "Audio Excerpt",
371                   'message' => "Generating audio excerpt: $omp3_file" };
372       
373        my ($ae_regenerated,$ae_result,$ae_had_error)
374            = $self->run_cached_general_cmd($ae_cmd,$omp3_filename,$ae_options);
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
614    $self->{'vob_duration_info'} = &VideoConverter::vob_durations($media_base_dir,"1",$self->{'outhandle'});
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)
676    = &VideoConverter::identify($src_filename, $outhandle, $verbosity);
677
678    if ($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   
724###    my $videoconvert
725### = new videoconvert($base_dir,$src_filename,$verbosity,$outhandle,$exp_duration);
726###    $self->{'videoconvert'} = $videoconvert;
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)
741    = $self->stream_cmd($src_filename,
742                $video_width,$video_height,
743                $streaming_quality, $streaming_bitrate, $streaming_size,
744                $streaming_achan, $streaming_arate);
745
746    my $streamable_options = { @{$self->{'ffmpeg_monitor'}},
747                   'message_prefix' => "Stream",
748                   'message' => "Generating streamable video: $oflash_file" };
749
750    my ($streamable_regenerated,$streamable_result,$streamable_had_error)
751    = $self->run_cached_general_cmd($stream_cmd,$oflash_filename,$streamable_options);
752
753    $self->{'streamable_regenerated'} = $streamable_regenerated;
754
755    if (!$streamable_had_error) {
756    #---
757    # Make video seekable
758    #---
759    my ($streamseekable_cmd,$ostreamseekable_filename) = $self->streamseekable_cmd($oflash_filename);
760   
761    my $streamseekable_options = { @{$self->{'flvtool2_monitor'}},
762                       'message_prefix' => "Stream Seekable",
763                       'message' => "Reprocessing video stream to be seekable by timeline: $oflash_file" };
764
765    if ($streamable_regenerated) {
766        $self->run_general_cmd($streamseekable_cmd,$streamseekable_options);
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
806    my $output_dir = $self->{'cached_dir'};
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
890####    my $videoconvert = $self->{'videoconvert'};
891    my $oflash_filename = $self->{'oflash_filename'};
892    my $oflash_file = $self->{'oflash_file'};
893
894    my ($streamcuepts_cmd,$ostreamcuepts_filename) = $self->streamcuepts_cmd($oflash_filename);
895
896    my $verbosity = $self->{'verbosity'};
897    my $outhandle = $self->{'outhandle'};
898
899    my $streamcuepts_options = { @{$self->{'flvtool2_monitor'}},
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) {
906    $self->run_general_cmd($streamcuepts_cmd,$streamcuepts_options);
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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