root/extensions/gsdl-video/trunk/perllib/plugins/TimedHTMLPlugin.pm @ 18982

Revision 18982, 26.8 KB (checked in by davidb, 11 years ago)

Some mods to work with Windows version of ffmpeg

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    my $time_pos = $self->{'time_pos'};
219    my $time_num = scalar(@{$self->{'time_seq'}});
220
221####    my $videoconvert = $self->{'videoconvert'};
222
223    # excerpt from tim_pos -> time_pos + 2;
224    my $adv_time_pos = $time_pos+2;
225    $adv_time_pos = $time_num-1 if ($adv_time_pos>=$time_num);
226
227    my $adv_time_elem = $self->{'time_seq'}->[$adv_time_pos];
228
229#    print STDERR "*** ", substr($adv_time_elem,0,800), "\n";
230
231    my ($atape,$ah,$am,$as) = ($adv_time_elem =~ m/(T\d+:) ?(\d\d):(\d\d):(\d\d)(?:\:\d\d)?/);
232
233    my $excerpt_len = undef;
234    my $time_in_secs     = $self->hms_to_secs($hh,$mm,$ss);
235
236    if (!defined $tape) {
237    if (defined $self->{'ptape'}) {
238        $tape = $self->{'ptape'};
239    }
240    else {
241        print STDERR "Warning: First time offset does not define tape side\n";
242        print STDERR "         Defaulting to 1\n";
243        $tape = "T1:";
244    }
245    }
246
247    if (!defined $atape) {
248    $atape = "T1";
249    }
250
251#    print STDERR "**** atape = $atape\n";
252#    print STDERR "*** tape = $tape\n";
253
254    if ($atape eq $tape) {
255    my $adv_time_in_secs = $self->hms_to_secs($ah,$am,$as);
256
257    $excerpt_len = $adv_time_in_secs - $time_in_secs;
258    }
259
260    my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
261
262    my $media_type = $self->{'media_type'};
263    my $media_dir  = $self->{'media_dir'};
264    my $media_root = $self->{'media_root'};
265
266    my $media_base_dir = $self->{'media_base_dir'};
267
268    my $mp3_html;   
269    my $avi_html;
270
271    my $tape_num = "1";
272
273    if (defined $media_type) {
274
275    my $src_file;
276    my $src_filename;
277
278    if ($media_type eq "video") {
279        $src_file = "$media_root\_01_$tape_num.VOB";
280        $src_filename
281        = &util::filename_cat($media_base_dir, $src_file);
282    }
283    elsif ($media_type =~ m/^audio$/) {
284        $src_file = "$media_root\_Tape$tape_num.mp3";
285        $src_filename
286        = &util::filename_cat($media_base_dir, $src_file);
287    }
288    else {
289        print STDERR "Warning: Unrecognised media type: $media_type\n";
290    }
291
292
293    if ($media_type eq "video") {
294
295        # video excerpt
296
297        my $encoded_file = "$media_dir\_$time_encoded_file.avi";
298
299        my $ve_filename
300        = &util::filename_cat($collect_dir,"media","video_excerpt",$encoded_file);
301
302        if ($only_num < $only_limit) {
303        if (! -e $ve_filename) {
304            # my $args = "-vcodec mpeg2video";
305            my $args = "-vcodec msmpeg4";
306           
307            my $ve_cmd = "gsmpeg.sh -v 1 -i $src_filename $args -ss $time_encoded ";
308           
309            if (defined $excerpt_len) {
310            $ve_cmd .= "-t $excerpt_len ";
311            }
312           
313            $ve_cmd .= $ve_filename;
314           
315##          print STDERR "$ve_cmd\n";
316           
317##          `$ve_cmd`;
318        }
319           
320##      my $avi_url = "http://mcgonagall.cs.waikato.ac.nz:8201/gsdl/collect/hauraki2/media/video_excerpt/$media_dir\_$time_encoded_file.avi";
321        my $avi_url = "_httpprefix_/collect/hauraki2/media/video_excerpt/$media_dir\_$time_encoded_file.avi";
322       
323##      $avi_html = "<a class=\"mm\" href=\"$avi_url\"><img border=1 src=\"_httpcimages_\/video5.gif\"></a>";
324       
325       
326        ## my $stream_url = "_httpstreamserver_/$local_root.asf";
327##      my $stream_url = "http://mcgonagall.cs.waikato.ac.nz:8090/$local_root.avi";
328##      $avi_html .= "<a class=\"mm\" href=\"$stream_url\">Stream</a>";
329
330
331        ## $avi_html .= "<a class=\"mm\" href=\"_httpcurrentdocumentwithvplayer_\"><img border=1 src=\"_httpcimages_\/video5.gif\"></a>";
332
333        $avi_html .= "<a class=\"mm\" href=\"javascript:videoplayerseek($hh,$mm,$ss)\"><img border=1 src=\"_httpcimages_\/video5.gif\"></a>";
334
335        # save 'time-stamp' as metadata???
336       
337
338
339        }
340        else {
341        $avi_html = "<img src=\"_httpcimages_\/video5.gif\">";
342        }
343    }
344
345    if ($media_type =~ m/^(video|audio)$/) {
346
347        # audio excerpt
348#       my $encoded_file = "$media_dir\_$time_encoded_file.mp3";
349
350#       ## my $src_file = "$media_root\_Tape$tape_num.avi";
351
352#       #my $src_filename
353#       #   = &util::filename_cat($collect_dir,"media",$media_type ,$media_dir, $src_file);
354
355#       my $ae_filename
356#       = &util::filename_cat($collect_dir,"media","audio_excerpt",$encoded_file);
357
358
359        if ($only_num < $only_limit) {
360
361        $excerpt_len = 120 if (!defined $excerpt_len); #######
362
363        my ($ae_cmd,$omp3_filename,$omp3_file)
364            = $self->audio_excerpt_cmd($src_filename,
365                           $hh,$mm,$ss,$excerpt_len);
366       
367        my $ae_options = { @{$self->{'ffmpeg_monitor'}},
368                   'message_prefix' => "Audio Excerpt",
369                   'message' => "Generating audio excerpt: $omp3_file" };
370       
371        my ($ae_regenerated,$ae_result,$ae_had_error)
372            = $self->run_cached_general_cmd($ae_cmd,$omp3_filename,$ae_options);
373
374        push(@{$self->{'mp3_excerpts'}}, { 'omp3_file' => $omp3_file, 'omp3_filename' => $omp3_filename} );
375
376        }
377
378
379
380
381        #    if (! -e $ae_filename) {
382        if ($only_num < $only_limit) {
383#       if (! -e $ae_filename) {
384           
385#           my $args = "-acodec mp3";
386           
387#           ## my $src_filename = "media/video/mirth/VTS_01_1.avi";
388#           my $ae_cmd = "gsmpeg.sh -v 1 -i $src_filename $args -ss $time_encoded ";
389           
390#           if (defined $excerpt_len) {
391#           $ae_cmd .= "-t $excerpt_len ";
392#           }
393           
394#           $ae_cmd .= $ae_filename;
395                                   
396##          print STDERR "$ae_cmd\n";
397           
398##          `$ae_cmd`;
399#       }
400       
401       
402##      my $mp3_url = "http://mcgonagall.cs.waikato.ac.nz:8201/gsdl/collect/hauraki2/media/audio_excerpt/$media_dir\_$time_encoded_file.mp3";
403#       my $mp3_url = "_httpprefix_/collect/hauraki2/media/audio_excerpt/$media_dir\_$time_encoded_file.mp3";
404   
405        my ($voa_root) = ($src_file =~ m/^(.*)\..*?$/);
406   
407        my $mp3_url = "javascript:audioexcerptplay('$voa_root','$hh','$mm','$ss')";
408
409#       my $mp3_url = "_httpcollection_/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}/$media_dir\_$time_encoded_file.mp3";
410
411        $mp3_html = "<a class=\"mm\" href=\"$mp3_url\"><img border=1 src=\"_httpcimages_\/audio2.gif\"></a>";
412
413#       my $baseexcerpt_url = "_httpcollection_/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}";
414       
415#####       $doc_obj->add_metadata ($section, "audioexcerpturl",$mp3_url);
416       
417       
418        }
419        else {
420        $mp3_html = "<img src=\"_httpcimages_\/audio2.gif\">";
421       
422        }
423    }
424    }
425    else {
426    print STDERR "Warning: no media type defined.\n";
427    }
428
429
430    $only_num++;
431
432    $self->{'time_pos'}++;
433
434    my $table = "<table width=\"100%\" cellspacing=\"1\" cellpadding=\"0\"><tr valign=\"middle\">";
435    $table .= "<td>$avi_html</td>" if (defined $avi_html);
436    $table .= "<td>$mp3_html</td>";
437    $table .= "<td>$time_encoded</td>";
438    $table .= "</tr></table>";
439
440    # my $line = "$front$avi_html&nbsp;$mp3_html&nbsp;$time_encoded$back";
441
442    my $line = "$front$table$back";
443
444    # Remember tape prefix for next call
445    $self->{'ptape'} = $tape;
446
447    return $line;
448}
449
450
451sub hyperlink_timing_info
452{
453    my ($self, $textref) = @_;
454
455    my $media_type = $self->{'media_type'};
456    my $media_dir  = $self->{'media_dir'};
457    my $media_root = $self->{'media_root'};
458
459    my $front_re = "<p class=Timing><span\\s+.*?>";
460    my $tape_re  = "T\\d+:";
461    my $tt_re = "\\d\\d";
462    my $back_re = ".*?<\\/span>";
463
464    my $time_match_re = "$front_re$tt_re:$tt_re:$tt_re$back_re(?:\:$tt_re)?";
465    # my $time_sub_re   = "($front_re)($tape_re)? ?($tt_re):($tt_re):($tt_re)(?:\:$tt_re)?($back_re)";
466
467    my $tape_match_re   = "$front_re($tape_re)? ?$tt_re:$tt_re:$tt_re(?:\:$tt_re)?$back_re";
468    my $tape_sub_re   = "($front_re)($tt_re):($tt_re):($tt_re)(?:\:$tt_re)?($back_re)";
469
470
471
472    my @time_seq = ($$textref =~ m/$time_match_re/sgi);
473
474    # artifically add tape information into all time indexes
475    my $extrapolate_tape = "";
476    my $num_seq = scalar(@time_seq);
477    for (my $i=0; $i<$num_seq; $i++) {
478    my ($curr_tape) = ($time_seq[$i] =~ m/$tape_match_re/sgi);
479    if (!defined $curr_tape) {
480        $time_seq[$i] =~ s/$tape_sub_re/$1$extrapolate_tape$2:$3:$4$5/sgi;
481    }
482    else {
483        if ($curr_tape ne $extrapolate_tape) {
484        $extrapolate_tape = $curr_tape;
485        }
486    }
487    }
488
489
490    $self->{'time_seq'} = \@time_seq;
491    $self->{'time_pos'} = 0;
492
493    $$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;
494
495
496    # knock out any div tags as they interfere with document broken up into sections
497    $$textref =~ s/<\/?div.*?>//gi;
498
499    # Embedded word style infomation is lost by HTMLPlug => make Question
500    # style use HTML italics
501
502    $$textref =~ s/<p class=\"Question\">(.*?)<\/p>/<p><i>$1<\/i><\/p>/gsi;
503
504}
505
506
507
508sub store_block_files
509{
510    my $self =shift (@_);
511    my ($filename_full_path, $block_hash) = @_;
512
513    # Would be better if this were tied to particular HTML docs that
514    # this plugin has processed.
515
516    # For now block all files native to DVD format
517
518    if (($filename_full_path =~ m/\.(IFO|BUP)$/)        # block info and backup-info data
519    || ($filename_full_path =~ m/VIDEO_TS\..*?$/)   # block top-level files
520    || ($filename_full_path =~ m/VTS_\d\d_\d\.VOB$/) #
521    ) {
522   
523    $block_hash->{'file_blocks'}->{$filename_full_path} = 1;
524    }
525}
526
527sub read_block {
528    my $self = shift (@_); 
529 
530    my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
531
532    print STDERR "***** TimedHTMLPlugin read_block\n";
533
534    my $filename = $file;
535    $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
536
537    if (($filename =~ m/\.(IFO|BUP)$/)        # block info and backup-info data
538    || ($filename =~ m/VIDEO_TS\..*?$/)   # block top-level files
539    || ($filename =~ m/VTS_\d\d_\d\.VOB$/) #
540    ) {
541    $self->{'num_blocked'} ++;
542    return (0,undef); # blocked
543    }
544
545
546#####   || ($filename =~ m/VTS_\d\d_0\.VOB$/) # block menu item for this track
547
548
549    if (defined $self->{'file_blocks'}->{$filename} && $self->{'file_blocks'}->{$filename} == 1){
550    $self->{'num_blocked'} ++;
551    return (0,undef); # blocked
552    }
553
554
555    if (defined $self->{'re_file_block'}) {
556    my $re_file_blocks = $self->{'re_file_block'};
557    foreach my $re_file_block (@$re_file_blocks) {
558###     print STDERR "**** re file block: $filename =~ m $re_file_block\n";
559        if ($filename =~ m/$re_file_block/) {
560###     print STDERR "*** blocking $filename\n";
561
562        $self->{'num_blocked'} ++;
563        return (0,undef); # blocked
564        }
565    }
566    }
567
568
569    return $self->SUPER::read_block(@_);
570
571}
572
573
574sub read_file {
575    my $self = shift @_;
576    my ($filename, $encoding, $language, $textref) = @_;
577
578    $only_num = 0;
579
580    $self->SUPER::read_file(@_);
581
582    my $metatable_store = $self->extract_metadata_table($textref);
583    $self->{'metatable_store'} = $metatable_store;
584
585    my ($root, $dirname, $suffix)
586        = &File::Basename::fileparse($filename, "\\.[^\\.]+\$");
587   
588    # media defaults
589    my $media_type = undef;
590    my $media_dir  = $root;
591    ## my $media_root = "VTS_%02d_%02d";
592    my $media_root = "VTS";
593
594    if (defined $metatable_store->{'GS.Media'}) {
595    $media_type = $metatable_store->{'GS.Media'};
596    $media_type = lc($media_type);
597    }
598    if (defined $metatable_store->{'GS.MediaDirectory'}) {
599    $media_dir = $metatable_store->{'GS.MediaDirectory'};
600    }
601    if (defined $metatable_store->{'GS.MediaRoot'}) {
602    $media_root = $metatable_store->{'GS.MediaRoot'};
603    }
604
605    $self->{'media_type'} = $media_type;
606    $self->{'media_dir'}  = $media_dir;
607    $self->{'media_root'} = $media_root;
608
609    my $media_base_dir = &util::filename_cat($dirname,$media_dir);
610    $self->{'media_base_dir'} = $media_base_dir;
611
612    $self->{'vob_duration_info'} = &VideoConverter::vob_durations($media_base_dir,"1",$self->{'outhandle'});
613
614##    $self->hyperlink_timing_info($textref);
615
616    # Convert entities to their UTF8 equivalents
617    $$textref =~ s/&(lt|gt|amp|quot|nbsp);/&z$1;/go;
618    $$textref =~ s/&([^;]+);/&ghtml::getcharequiv($1,1)/gseo;
619    $$textref =~ s/&z(lt|gt|amp|quot|nbsp);/&$1;/go;
620}
621
622
623sub streamable_video
624{
625    my $self = shift (@_);
626
627    my ($base_dir,$filename,$doc_obj,$section) = @_;
628
629    my $outhandle = $self->{'outhandle'};
630    my $verbosity = $self->{'verbosity'};
631
632    my $media_base_dir = $self->{'media_base_dir'};
633
634    #---
635    # Determine size of input video
636
637    my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
638
639    my $media_type = $self->{'media_type'};
640    my $media_dir  = $self->{'media_dir'};
641    my $media_root = $self->{'media_root'};
642
643    my $tape_num = "1";
644
645    my $src_file;
646    my $src_filename;
647
648    if ($media_type eq "video") {
649    $src_file = "$media_root\_01_$tape_num.VOB";
650    $src_filename
651        = &util::filename_cat($media_base_dir, $src_file);
652    }
653    elsif ($media_type =~ m/^audio$/) {
654    $src_file = "$media_root\_Tape$tape_num.mp3";
655    $src_filename
656        = &util::filename_cat($media_base_dir, $src_file);
657    }
658    else {
659    print STDERR "Warning: Unrecognised media type: $media_type\n";
660    }
661
662    if (-e $src_filename) {
663    $self->{'file_blocks'}->{$src_filename} = 1;
664
665    my $re_file_block = $src_filename;
666    $re_file_block =~ s/_01_$tape_num.VOB$/_\\d+_\\d+.VOB\$/;
667   
668   
669    push(@{$self->{'re_file_block'}},$re_file_block);
670    }
671
672    my ($video_type, $video_width, $video_height, $video_duration, $video_size,
673    $vcodec,$vfps,$atype,$afreq,$achan,$arate)
674    = &VideoConverter::identify($src_filename, $outhandle, $verbosity);
675
676    if ($vfps eq "unknown") {
677    print $outhandle "Unknown framerate, defaulting to 25 frames per second.\n";
678    $vfps = 25;
679    }
680
681###    print STDERR "*** video duration = $video_duration\n";
682    my ($dur_hour,$dur_min,$dur_sec)
683    = ($video_duration =~ m/(\d+):(\d+):(\d+\.\d+)/);
684    my $total_dur_secs = $dur_hour*3600 + $dur_min*60 + $dur_sec;
685
686    $self->{'video-fps'} = $vfps;
687    $self->{'num-total-frames'} = $total_dur_secs * $vfps;
688
689
690    # shorten duration prcessed for experimentation purposes
691    my $exp_duration = undef;
692
693    my $video_excerpt_duration = $self->{'video_excerpt_duration'};
694
695    print STDERR "**** video duration (secs) = $total_dur_secs\n";
696
697
698    if ((defined $video_excerpt_duration) && ($video_excerpt_duration ne "")) {
699    $exp_duration = $video_excerpt_duration;
700    my ($hh,$mm,$ss,$ms) = ($exp_duration =~ m/^(\d\d):(\d\d):(\d\d)\.?(\d\d)?/);
701    my $excerpt_dur_in_secs = $hh * 3600 + $mm * 60 + $ss;
702
703    if ($excerpt_dur_in_secs < $total_dur_secs) {
704        $self->{'num-total-frames'} = $excerpt_dur_in_secs * $vfps; # override calculation for full length duration
705    }
706    else {
707        # clip is already shorter than requested video excerpt duration
708        # set exp_duration back to undefined
709        $exp_duration = undef;
710    }
711    }
712
713    print $outhandle "TimedHTMLPlug: Preparing video files associated with $filename for HTMLPlug\n";
714
715    if (defined $exp_duration)
716    {
717    print $outhandle "Only encoding first $exp_duration of video.\n";
718    $self->{'exp_duration'} = $exp_duration;
719    }
720
721   
722###    my $videoconvert
723### = new videoconvert($base_dir,$src_filename,$verbosity,$outhandle,$exp_duration);
724###    $self->{'videoconvert'} = $videoconvert;
725# ******
726
727    $self->init_cache_for_file($src_filename);
728
729    #---
730    # Generate the Flash FLV format for streaming purposes
731
732    my $streaming_bitrate = "256k"; # used to be 192k
733    my $streaming_size    = "360"; # used to be 352 (CIF?)
734    my $streaming_achan   = "1";
735    my $streaming_arate   = "44100";
736    my $streaming_quality = "high";
737
738    #---
739    # Convert video to flash
740    #---
741    my ($stream_cmd,$oflash_filename,$oflash_file)
742    = $self->stream_cmd($src_filename,
743                $video_width,$video_height,
744                $streaming_quality, $streaming_bitrate, $streaming_size,
745                $streaming_achan, $streaming_arate);
746
747    my $streamable_options = { @{$self->{'ffmpeg_monitor'}},
748                   'message_prefix' => "Stream",
749                   'message' => "Generating streamable video: $oflash_file" };
750
751    my ($streamable_regenerated,$streamable_result,$streamable_had_error)
752    = $self->run_cached_general_cmd($stream_cmd,$oflash_filename,$streamable_options);
753
754    $self->{'streamable_regenerated'} = $streamable_regenerated;
755
756    if (!$streamable_had_error) {
757    #---
758    # Make video seekable
759    #---
760    my ($streamseekable_cmd,$ostreamseekable_filename) = $self->streamseekable_cmd($oflash_filename);
761   
762    my $streamseekable_options = { @{$self->{'flvtool2_monitor'}},
763                       'message_prefix' => "Stream Seekable",
764                       'message' => "Reprocessing video stream to be seekable by timeline: $oflash_file" };
765
766    if ($streamable_regenerated) {
767        $self->run_general_cmd($streamseekable_cmd,$streamseekable_options);
768    }
769
770    my $streamable_url = $oflash_file;
771##  $streamable_url =~ s/ /%20/g;
772
773    $doc_obj->add_metadata ($section, "streamablevideo", $streamable_url);
774    $doc_obj->associate_file($oflash_filename,$oflash_file,"video/flash",
775                 $section);
776    }
777
778    #
779    # FlowPlayer.swf       height+22 pixels
780    # FlowPlayerBlack.swf  height+16 pixels
781    # FlowPlayerThermo.swf height+16 pixels
782    # FlowPlayerWhite.swf  height+26 pixels
783    $doc_obj->add_metadata ($section, "flashwidth",    $video_width);
784    $doc_obj->add_metadata ($section, "flashheight",   $video_height + 22 + 100);
785   
786    my $base_url = "_httpstreamserverprefix_/collect/[collection]/index/assoc/{If}{[assocfilepath],[assocfilepath],[parent(Top):assocfilepath]}/";
787
788    $doc_obj->add_metadata ($section, "baseurl",$base_url);
789   
790    $self->{'oflash_file'} = $oflash_file;
791    $self->{'oflash_filename'} = $oflash_filename;
792
793}
794
795
796
797sub add_cuepoints
798{
799    my ($self) = shift @_;
800    my ($doc_obj) = @_;
801
802    my $section = $doc_obj->get_top_section();
803    my $chapters = $doc_obj->get_children($section);
804
805
806    # open file
807    my $output_dir = $self->{'cached_dir'};
808    my $cue_filename = &util::filename_cat($output_dir,"on_cue.xml");
809
810    open(CUEOUT,">$cue_filename")
811    || die "Unable to open $cue_filename: $!\n";
812    print CUEOUT "<tags>\n";
813
814
815    my $cc = 0;
816
817    foreach my $chap (@$chapters)
818    {
819    $cc++;
820
821    my $chap_text = $doc_obj->get_text($chap);
822
823    my @cuepoints
824        = ($chap_text =~ m/<p class=Timing><span\s+.*?>(?:T\d+:)? ?(\d\d:\d\d:\d\d)(?:\:\d\d)?/gsi);
825
826    my $count = 0;
827
828    foreach my $cuepoint (@cuepoints)
829    {       
830        my ($hh,$mm,$ss) = ($cuepoint =~ m/(\d\d):(\d\d):(\d\d)/);
831
832        my $cuept_insecs = $self->hms_to_secs($hh,$mm,$ss);
833
834        if ($cuept_insecs < 2) {
835        $cuept_insecs += 2;
836        }
837        my $cuept_inmsecs = 1000 * $cuept_insecs;
838       
839        $doc_obj->add_metadata($section,"cuepoint",$cuept_inmsecs);
840        my $chap_title = $doc_obj->get_metadata_element($chap,"Title");
841
842        # Navigation point (used in seeking)
843#       print CUEOUT "  <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
844#       print CUEOUT "    <name>$chap_title</name>\n";
845#       print CUEOUT "    <timestamp>$cuept_inmsecs</timestamp>\n";
846#       print CUEOUT "    <parameters>\n";
847#       print CUEOUT "      <thumb>dummy</thumb>\n";
848#       print CUEOUT "      <sectionnum>$chap</sectionnum>\n";
849#       print CUEOUT "      <subsectionnum>$count</subsectionnum>\n";
850#       print CUEOUT "      <cuept>$cuept_inmsecs</cuept>\n";
851#       print CUEOUT "    </parameters>\n";
852#       print CUEOUT "    <type>navigation</type>\n";
853#       print CUEOUT "  </metatag>\n";
854
855
856#       print CUEOUT "  <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
857#       print CUEOUT "    <name>$chap_title</name>\n";
858#       print CUEOUT "    <timestamp>$cuept_inmsecs</timestamp>\n";
859#       print CUEOUT "    <parameters>\n";
860#       print CUEOUT "      <thumb>foo.jpg</thumb>\n";
861#       print CUEOUT "    </parameters>\n";
862#       print CUEOUT "    <type>navigation</type>\n";
863#       print CUEOUT "  </metatag>\n";
864
865        if ($count==0)
866        {
867        # Event (used to hook in to javascipt callback)
868        # Only do for the first in each chapter
869
870        print CUEOUT "  <metatag event=\"onCuePoint\" overwrite=\"true\">\n";
871##      print CUEOUT "    <name>Test $cc</name>\n";
872        print CUEOUT "    <name>$chap_title</name>\n";
873        print CUEOUT "    <timestamp>$cuept_inmsecs</timestamp>\n";
874        print CUEOUT "    <parameters>\n";
875        print CUEOUT "      <cuept>$cuept_inmsecs</cuept>\n";
876        print CUEOUT "      <sectionnum>$chap</sectionnum>\n";
877        print CUEOUT "    </parameters>\n";
878        print CUEOUT "    <type>event</type>\n";
879##      print CUEOUT "    <type>actionscript</type>\n";
880        print CUEOUT "  </metatag>\n";
881        }
882
883        $count++;
884    }
885    }
886
887
888    print CUEOUT "</tags>\n";
889    close(CUEOUT);
890
891####    my $videoconvert = $self->{'videoconvert'};
892    my $oflash_filename = $self->{'oflash_filename'};
893    my $oflash_file = $self->{'oflash_file'};
894
895    my ($streamcuepts_cmd,$ostreamcuepts_filename) = $self->streamcuepts_cmd($oflash_filename);
896
897    my $verbosity = $self->{'verbosity'};
898    my $outhandle = $self->{'outhandle'};
899
900    my $streamcuepts_options = { @{$self->{'flvtool2_monitor'}},
901                 'message_prefix' => "Stream Cue Points",
902                 'message' => "Reprocessing video stream to add cuepoints on timeline: $oflash_file" };
903
904    my $streamable_regenerated = $self->{'streamable_regenerated'};
905
906    if ($streamable_regenerated) {
907    $self->run_general_cmd($streamcuepts_cmd,$streamcuepts_options);
908    }
909
910   
911
912}
913
914
915
916sub process {
917    my $self = shift (@_);
918    my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli) = @_;
919
920    my $filename = $file;
921    $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
922
923    my $top_section = $doc_obj->get_top_section();
924
925    $self->streamable_video($base_dir,$filename,$doc_obj,$top_section);
926
927    $self->hyperlink_timing_info($textref);
928
929    foreach my $mp3_excerpt (@{$self->{'mp3_excerpts'}}) {
930    my $omp3_file = $mp3_excerpt->{'omp3_file'};
931    my $omp3_filename = $mp3_excerpt->{'omp3_filename'};
932
933    $doc_obj->associate_file($omp3_filename,$omp3_file,"audio/mp3",
934                 $top_section);
935    }
936    $self->{'mp3_excerpts'} = undef;
937
938    my $metatable_store = $self->{'metatable_store'};
939    foreach my $metaname (keys %$metatable_store) {
940    my $metadata = $metatable_store->{$metaname};
941    $doc_obj->add_metadata($top_section,$metaname,$metadata);
942    }
943    $self->{'metatable_store'} = undef;
944
945    my $ret_val = $self->SUPER::process(@_);
946
947    $self->add_cuepoints($doc_obj);
948
949
950    return $ret_val;
951
952}
953
954
955
956sub replace_images {
957    my $self = shift (@_);
958    my ($front, $link, $back, $base_dir,
959    $file, $doc_obj, $section) = @_;
960
961    if ($link =~ m/^"?_.*?_"?\//) {
962    # variety of greenstone macro, so let through unchanged
963    return $front . $link . $back ;
964    }
965
966    return $self->SUPER::replace_images(@_);
967}
968
969
970
971
972
973sub replace_href_links {
974    my $self = shift (@_);
975    my ($front, $link, $back, $base_dir, $file, $doc_obj, $section) = @_;
976
977
978    if ($link =~ m/^"?_.*?_"?/) {
979    # variety of greenstone macro, so let through unchanged
980    return $front . $link . $back ;
981    }
982
983    return $self->SUPER::replace_href_links(@_);
984}
985
9861;
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