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Commit 3f8c1b91f5b163f22b65df1839535c68c1916a5c

Authored by Nei Jobson da Costa Carneiro
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Carregados arquivos da versão 1.0.0 do OCR Server.

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INSTALL.txt 0 → 100644
  Diff comments   View file @3f8c1b9
  1 +++ a/INSTALL.txt
... ... @@ -0,0 +1,103 @@
  1 +# Configure o script, alterando as variáveis no arquivo 'usr/local/bin/ocr':
  2 + # @BASE_DIRS: Lista de diretórios base para a busca de arquivos --> cada diretório base irá ter sua própria instância do script
  3 + # @SUB_DIRS: Subdiretórios de entrada, saída, backup do arquivos originais, temporário e de arquivos com erro
  4 + # $MAX_FILES: Número máximo de arquivos a serem processados simultaneamente por diretório de entrada (default: 2)
  5 + # $MAX_PGS: Número máximo de páginas que podem ser processadas simultanemante por arquivo de entrada (default: no. de CPUs)
  6 + # Essas variáveis controlam o número máximo de instâncias de processos simultâneas = Num. de diretorios X MAX_FILES X MAX_PGS.
  7 + # Recomenda-se que o equipamento tenha em torno de 1,5 GB de RAM para cada core de CPU de forma a evitar swap. Se isso não for possível, pode ser reduzido o número de processos ou arquivos simultâneos.
  8 +
  9 +# Para operação multi instância, basta instalar quantos servidores forem necessários e eles podem ter acesso aos mesmos diretórios de entrada que podem ser compatilhamentos SAMBA/CIFS/Windows ou NFS.
  10 +
  11 +
  12 +# Configuração e instalação do OCR server:
  13 +
  14 +# Compilando os pré-requisitos: máquina de COMPILAÇÃO APENAS -- (RedHat) --> os requisitos de runtime estão abaixo e são menores
  15 + yum -y install autoconf make gcc-java gcc gcc-c++ subversion pkg-config automake libtool yasm cmake git libgcj
  16 + yum -y install libtiff-devel libpng-devel openjpeg-devel libjpeg-turbo-devel giflib-devel libwebp-devel zlib-devel libicu-devel pango-devel cairo-devel fontconfig-devel gettext-devel
  17 +
  18 +# Ubuntu
  19 + apt-get install build-essential cmake libtool yasm pkg-config subversion git libgcj14
  20 + apt-get install libtiff-dev libpng-dev libopenjpeg-dev libjpeg8-dev libjpeg-turbo8-dev libjpeg-dev libgif-dev zlib1g-dev libicu-dev libpango1.0-dev libcairo2-dev libfontconfig1-dev libgettextpo-dev
  21 +
  22 + cd /usr/local/src
  23 +
  24 + for i in \
  25 + https://github.com/tesseract-ocr/langdata.git \
  26 + https://github.com/DanBloomberg/leptonica.git \
  27 + https://github.com/libav/libav.git \
  28 + https://github.com/tesseract-ocr/tessdata.git \
  29 + https://github.com/tesseract-ocr/tesseract.git \
  30 + git://git.freedesktop.org/git/poppler/poppler.git \
  31 + git://git.freedesktop.org/git/poppler/test.git \
  32 + https://github.com/Flameeyes/unpaper.git \
  33 + https://github.com/ocaml/ocaml.git \
  34 + https://gitlab.camlcity.org/gerd/lib-findlib.git \
  35 + https://github.com/johnwhitington/camlpdf.git \
  36 + https://github.com/johnwhitington/cpdf-source.git \
  37 + ; do git clone $i; done
  38 +
  39 + wget http://www.itzgeek.com/msttcore-fonts-2.0-3.noarch.rpm
  40 + rpm -Uvh msttcore-fonts-2.0-3.noarch.rpm
  41 + rm -f msttcore-fonts-2.0-3.noarch.rpm
  42 +
  43 + wget https://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/pdftk-2.02-src.zip
  44 + unzip pdftk-2.02-src.zip
  45 + rm -f pdftk-2.02-src.zip
  46 +
  47 +# Leptonica
  48 + cd leptonica && ./autobuild && ./configure && make -j 8 all install && cd ..
  49 +
  50 +# Tesseract
  51 + cd tesseract && ./autogen.sh && ./configure && make -j 8 all install && cd ..
  52 + cp -avR tessdata/* /usr/local/share/tessdata/
  53 +
  54 +# libav
  55 + cd libav && ./configure --enable-sram && make -j8 all install && cd ..
  56 +
  57 +# cpdf
  58 + cd ocaml && ./configure && make world.opt && make install && cd ..
  59 + mkdir -p /usr/local/man/man5
  60 + cd lib-findlib && ./configure && make all && make install && cd ..
  61 + cd camlpdf && sed -i.bak s/\(uint32\)/\(uint32_t\)/g flatestubs.c && make && make install && cd ..
  62 + cd cpdf-source && make all && make install && cp cpdf /usr/local/bin && cd ..
  63 +
  64 +# pdftk
  65 + cd pdftk-2.02-dist/pdftk && make -f Makefile.Redhat all install && cd ../..
  66 +
  67 +# poppler
  68 + cd poppler && ./autogen.sh && LIBOPENJPEG_LIBS=-l/usr/local/lib/libopenjp2.so LIBOPENJPEG_CFLAGS=-I/usr/local/include ./configure --enable-libopenjpeg=openjpeg2 && make all install && cd ..
  69 +
  70 +# Criação do usuário
  71 + adduser ocr
  72 +
  73 +# Copie os arquivos ocr ocr-init* para o /home/ocr e, conforme o sistema operacional
  74 + cp /home/ocr/ocr /usr/local/bin
  75 + cp /home/ocr/ocr-init-rh /etc/init.d/ocr (OU)
  76 + cp /home/ocr/ocr-init-Ubuntu /etc/init/ocr
  77 +
  78 +# Auto start (RedHat)
  79 + chkconfig --add ocr
  80 + chkconfig --level 2345 ocr on
  81 +
  82 +# Auto start (Ubuntu)
  83 + update-rd.d ocr defaults
  84 +
  85 +# Create pkg
  86 + cd /home/ocr
  87 + tar cvozf pkg-ocr.tgz /usr/local/bin /usr/local/lib* /usr/local/man/ /usr/local/sbin/ /usr/local/share/ /usr/local/etc /usr/local/include/ /home/ocr/ocr* /etc/init.d/ocr /etc/rc*.d/*ocr
  88 + su
  89 +
  90 +# Copie o pacote para os outros servidores e extraia com:
  91 + cd /
  92 + tar xovzf pkg-ocr.tgz
  93 +
  94 +# Instalando pré-requisitos RUNTIME
  95 + yum -y install perl-File-Find-Rule-Perl perl-File-Touch libtiff libpng openjpeg-libs libjpeg-turbo giflib zlib libicu pango cairo fontconfig ImageMagick gettext libwebp
  96 + yum -y install libtiff libpng openjpeg libjpeg-turbo giflib libwebp zlib libicu pango cairo fontconfig gettext
  97 +
  98 +# Ubuntu
  99 + apt-get install libfile-find-rule-perl libfile-find-rule-perl-perl libtiff5 libpng12-0 libopenjpeg2 libjpeg-turbo8 libgif4 zlib1g libicu52 libpango1.0-0 libcairo2 fontconfig imagemagick gettext libwebp5 # libgcj14
  100 + apt-get install libtiff5 libpng12-0 libopenjpeg2 libjpeg8 libjpeg-turbo8 libjpeg8 zlib1g libpango1.0-0 libcairo2 libfontconfig1 libgettextpo0
  101 +
  102 +# Inicie o serviço com
  103 + service ocr start
0 104 \ No newline at end of file
... ...
etc/init.d/ocr 0 → 100644
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  1 +++ a/etc/init.d/ocr
... ... @@ -0,0 +1,80 @@
  1 +#!/bin/sh
  2 +#
  3 +# chkconfig: - 24 73
  4 +# description: Starts and stops the Samba winbind daemon
  5 +# #
  6 +# pidfile: /var/run/winbindd.pid
  7 +# config: /etc/samba/smb.conf
  8 +
  9 +
  10 +# Source function library.
  11 +. /etc/rc.d/init.d/functions
  12 +
  13 +# Avoid using root's TMPDIR
  14 +unset TMPDIR
  15 +
  16 +RETVAL=0
  17 +
  18 +
  19 +start() {
  20 + KIND="OCR"
  21 + echo -n $"Starting $KIND services: "
  22 + daemon /usr/local/bin/ocr
  23 + RETVAL=$?
  24 + echo
  25 + [ $RETVAL -eq 0 ] && touch /var/lock/subsys/ocr || RETVAL=1
  26 + return $RETVAL
  27 +}
  28 +
  29 +stop() {
  30 + echo
  31 + KIND="OCR"
  32 + echo -n $"Shutting down $KIND services: "
  33 + killproc ocr
  34 + RETVAL=$?
  35 + [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/ocr
  36 + echo ""
  37 + return $RETVAL
  38 +}
  39 +
  40 +restart() {
  41 + stop
  42 + start
  43 +}
  44 +
  45 +rhstatus() {
  46 + status ocr
  47 + return $?
  48 +}
  49 +
  50 +# Allow status as non-root.
  51 +if [ "$1" = status ]; then
  52 + rhstatus
  53 + exit $?
  54 +fi
  55 +
  56 +# Check that we are root ... so non-root users stop here
  57 +[ `id -u` -eq "0" ] || exit 4
  58 +
  59 +case "$1" in
  60 + start)
  61 + start
  62 + ;;
  63 + stop)
  64 + stop
  65 + ;;
  66 + restart)
  67 + restart
  68 + ;;
  69 + status)
  70 + rhstatus
  71 + ;;
  72 + condrestart)
  73 + [ -f /var/lock/subsys/ocr ] && restart || :
  74 + ;;
  75 + *)
  76 + echo $"Usage: $0 {start|stop|restart|status|condrestart}"
  77 + exit 2
  78 +esac
  79 +
  80 +exit $?
... ...
lgpl-2.1.txt 0 → 100644
  Diff comments   View file @3f8c1b9
  1 +++ a/lgpl-2.1.txt
... ... @@ -0,0 +1,502 @@
  1 +GNU LESSER GENERAL PUBLIC LICENSE
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0 503 \ No newline at end of file
... ...
usr/local/bin/ocr 0 → 100644
  Diff comments   View file @3f8c1b9
  1 +++ a/usr/local/bin/ocr
... ... @@ -0,0 +1,591 @@
  1 +#! /usr/bin/perl -w
  2 +#
  3 +# OCR Server 1.0 - (c) Agência Nacional de Telecomunicações
  4 +#
  5 +# This script monitors a set of input directories for PDF files
  6 +# once a new file is detected, it is processes through tesseract OCR
  7 +# in order to generate a new file with a hidden searchable text layer
  8 +#
  9 +# It may be distributed under the conditions of the LGPL v2.1 license.
  10 +#
  11 +# Author: Guilherme Chehab
  12 +#
  13 +# Version History:
  14 +# 0.1 Initial single server version
  15 +# 0.2 Check if page already has the html hidden layer, if so, ignore it
  16 +# 0.3 Solved issues about various image enconding types
  17 +# 0.4 Added a postnormalization step to ensure all output pdf pages have
  18 +# the same size and orientations as the original files
  19 +# 0.5 Used input file renaming as a way to sync multiple parallel instances,
  20 +# that way, it is minimized the risk of same file being OCRed multiple times.
  21 +# 0.6 Added a default handler for unknown image encoding using jpeg encoding
  22 +# 0.7 Solved an issue with files with more than 1000 pages
  23 +# 1.0 First release version
  24 +#
  25 +# Check software requirements on the comments bellow
  26 +#
  27 +# To configure input dirs change @BASE_DIRS and @SUB_DIRS variables
  28 +
  29 +use warnings;
  30 +use strict;
  31 +
  32 +use File::Find::Rule;
  33 +use File::Basename;
  34 +use File::Copy;
  35 +use File::Path qw (remove_tree make_path);
  36 +use File::Touch;
  37 +use Fcntl qw( :flock );
  38 +use Sys::Syslog;
  39 +use POSIX;
  40 +#use POSIX ":sys_wait_h";
  41 +use Sys::Hostname;
  42 +use IPC::Open3;
  43 +use IO::Select;
  44 +
  45 +my $DEBUG = 0;
  46 +my $MAX_PGS = ($DEBUG==2 ? 1 : `cat /proc/cpuinfo | grep CPU | wc -l`);
  47 +my $MAX_FILES = ( !$DEBUG ? 2 : 1) ;
  48 +
  49 +my $USER = 'ocr';
  50 +
  51 +# Command dependencies
  52 +
  53 +# depends on tesseract-ocr an tesseract-ocr-por 3.05-dev or higher
  54 +my $TESSERACT = '/usr/local/bin/tesseract -l por+eng';
  55 +
  56 +# Depends on pdftk 2.02 or higher
  57 +my $PDFTK = '/usr/local/bin/pdftk';
  58 +
  59 +# Depends on poppler-utils 0.42.0 or higher
  60 +#my $PDINFO = '/usr/local/bin/pdfinfo';
  61 +my $PDFFONTS = '/usr/local/bin/pdffonts';
  62 +my $PDFIMAGES = '/usr/local/bin/pdfimages';
  63 +my $PDFTOPPM = '/usr/local/bin/pdftoppm';
  64 +
  65 +# Depends on cpdf 3.3 or higher
  66 +my $CPDF = '/usr/local/bin/cpdf';
  67 +
  68 +# Depends on ImageMagick and http://www.fmwconcepts.com/imagemagick/downloadcounter.php?scriptname=textcleaner&dirname=textcleaner
  69 +#my $FILTER = '/usr/local/bin/textcleaner -g -e stretch -f 25 -o 10 -u -s 1 -T -p 10 ';
  70 +
  71 +my $CONVERT = '/usr/bin/convert';
  72 +
  73 +my @BASE_DIRS = ( '/mnt/protocolo_sede/DIGITALIZAÇÃO/ARQUIVOS PROTOCOLO/OCR/',
  74 + '/mnt/protocolo_sede/DIGITALIZAÇÃO/ARQUIVOS_PROCESSOS/OCR/' );
  75 +
  76 +my %SUB_DIRS = ( 'IN'=>'Entrada', 'OUT'=>'Saida', 'PROC'=>'Originais_Processados', 'TEMP'=>'/tmp/ocr_tmp', 'ERROR' => 'Erro' );
  77 +
  78 +@BASE_DIRS = ( '/tmp/ocr_dev/') if ($DEBUG==2);
  79 +%SUB_DIRS = ( 'IN'=>'Entrada', 'OUT'=>'Saida', 'PROC'=>'Originais_Processados', 'TEMP'=>'/tmp/ocr_dev/tmp', 'ERROR' => 'Erro' ) if ($DEBUG);
  80 +
  81 +
  82 +$ENV{'PATH'} = '/usr/local/bin:/bin:/usr/bin';
  83 +my ($host) = split/\./,hostname;
  84 +
  85 +use vars qw/*name *dir *prune/;
  86 +*name = *File::Find::name;
  87 +*dir = *File::Find::dir;
  88 +*prune = *File::Find::prune;
  89 +
  90 +sub main;
  91 +sub get_pages;
  92 +sub get_rotation;
  93 +sub get_res;
  94 +sub is_ocred;
  95 +sub is_locked_ex;
  96 +
  97 +
  98 +my $expr = 'use POSIX qw(setsid)';
  99 +
  100 +my ($dumb1, $dumb2, $uid) = getpwnam ($USER);
  101 +setuid ($uid) or warn "Cant set uid $uid";
  102 +
  103 +$SIG{__DIE__} = 'DEFAULT';
  104 +$SIG{__WARN__} = \&die_when_called;
  105 +#$SIG{CHLD} = 'IGNORE';
  106 +eval $expr;
  107 +if ($@) {
  108 + die "$0: cannot get POSIX::setsid since eval '$expr' failed: $@\n";
  109 +}
  110 +chdir('/') or die "$0: cannot chdir '/': $!\n";
  111 +open(STDIN, '/dev/null') or die "$0: cannot open '/dev/null': $!\n";
  112 +
  113 +foreach my $DIR (@BASE_DIRS) {
  114 +
  115 + defined(my $pid = fork) or die "$0: cannot fork: $!\n";
  116 + if (!$pid) {
  117 + #$SIG{CHLD} = 'IGNORE';
  118 + POSIX::setsid() or die "$0: cannot start a new session: $!\n";
  119 + main ($DIR, $DIR.$SUB_DIRS{IN}, $DIR.$SUB_DIRS{OUT}, $DIR.$SUB_DIRS{PROC}, $SUB_DIRS{TEMP}, $DIR.$SUB_DIRS{ERROR});
  120 + exit 0;
  121 + last;
  122 + }
  123 +}
  124 +
  125 +exit 0;
  126 +
  127 +sub main {
  128 + my ($DIR, $IN, $OUT, $PROC, $TEMP, $ERRO) = @_;
  129 +
  130 + my %files_in;
  131 + my %pids;
  132 + my $count=0;
  133 +
  134 + $0 = 'ocr_dev' if ($DEBUG);
  135 +
  136 + # Clean previous executions -- must be rewritten to permit multiple daemons running on same dir
  137 +
  138 + # Remove old temp files
  139 + remove_tree (${TEMP},{ keep_root=>1 , error=> \my $dumb });
  140 +
  141 + # remove .tmp file
  142 + unlink ( find ( file => name => qr/\.${host}\.tmp$/i , in => ${IN} ) );
  143 +
  144 + # Rename files that were in 'processig' back
  145 + foreach my $file ( find ( file => name => qr/\.${host}\.processing$/i , in => ${IN} ) ) {
  146 + my $old_name = $file;
  147 + $old_name =~ s/\.${host}\.processing$//g;
  148 + move ($file, $old_name);
  149 + }
  150 +
  151 + # Open log file
  152 + openlog ("ocr","ndelay,pid","local0") if !$DEBUG;
  153 + syslog ("info","OCR started, monitoring: ".$DIR) if (!$DEBUG);
  154 +
  155 + $SIG {TERM} = $SIG{HUP} = sub {
  156 + syslog ("info","OCR stopped monitor: ".$DIR) if (!$DEBUG);
  157 + exit 0;
  158 + };
  159 +
  160 +
  161 + # Main loop
  162 + while ( 1 ) {
  163 + select (undef, undef, undef, rand 3); # Random sleep so multiple instances dont get synced
  164 + $files_in {$_} = (!defined $files_in {$_} ? 1 : $files_in {$_}) for ( find ( file => name => qr/\.pdf$/i , in => ${IN} ));
  165 + print "\nFound ", scalar keys %files_in, " in $IN\n" if $DEBUG && $count != scalar keys %files_in;
  166 + $count = scalar keys %files_in;
  167 + foreach my $file (keys %files_in) {
  168 +
  169 + next if ( glob ("$file.*.tmp"));
  170 +
  171 + select (undef, undef, undef, 1 + rand 2); # sleep between 1 and 3 seconds
  172 + next if (!defined $files_in{$file}); # continue only if it is still valid
  173 + next if ($files_in{$file}==2); # if in file already is in processing
  174 +
  175 + if ($files_in {$file} == 1) {
  176 +
  177 + # Skip locked files -- should try again on next iteration
  178 + if ( is_locked_ex ($file)) {
  179 + delete $files_in {$file};
  180 + next;
  181 + }
  182 +
  183 + # Cleanup deleted pids before forking again
  184 + while (scalar keys %pids >= $MAX_FILES) {
  185 + my @ended = child_wait (\%pids);
  186 + foreach my $ended_pid (@ended) {
  187 + delete $files_in{$pids{$ended_pid}};
  188 + delete $pids{$ended_pid};
  189 + }
  190 + };
  191 +
  192 + if (!glob( "$file.*.tmp")) { # Do nothing with files in processing by another process
  193 + if (my $pid = fork) {
  194 + while (! glob ("$file.$host.tmp")) {sleep 1;}; # Wait until temp file is created
  195 + $files_in{$file} = 2;
  196 + $pids{$pid}=$file;
  197 + } else {
  198 + touch ("$file.$host.tmp");
  199 + while (! glob ("$file.$host.tmp")) {sleep 1;}; # Wait until temp file is created
  200 + select (undef, undef, undef, 1 + rand 2); # sleep between 1 and 3 seconds
  201 + ocr ( $DIR, $IN, $OUT, $PROC, $TEMP, $ERRO, $file);
  202 + exit (0); # It is never executed
  203 + }
  204 + } else {
  205 + next;
  206 + }
  207 + }
  208 + }
  209 +
  210 + # Cleanup periodicaly
  211 + foreach my $pid (keys (%pids)) {
  212 + if (waitpid ($pid,WNOHANG)==-1) {
  213 + delete $files_in{$pids{$pid}};
  214 + delete $pids{$pid};
  215 + }
  216 + }
  217 +
  218 + #if ($DEBUG==2) {
  219 + # child_wait (\%pids);
  220 + # exit;
  221 + #}
  222 + }
  223 +}
  224 +
  225 +sub ocr {
  226 + my ($DIR, $IN, $OUT, $PROC, $TMP, $ERROR, $in_file) = @_;
  227 + my ($in_name, $in_path, $in_suffix) = fileparse ($in_file);
  228 + my ($exit, $cmd, @out,@err);
  229 +
  230 + my $tmpdir = $TMP .'/'.$in_name.'.' . $$;
  231 + touch ("$in_file.$host.tmp");
  232 +
  233 + print "Will ocr $in_file\n" if ($DEBUG);
  234 +
  235 + $0 = "ocr $in_name" if(!$DEBUG);
  236 +
  237 + $SIG {TERM} = $SIG{HUP} = sub {
  238 + while (wait () != -1) { sleep 1;};
  239 + remove_tree ($tmpdir,{ error=> \my $dumb });
  240 + unlink ("$in_file.$host.tmp");
  241 + move ( "$in_file.$host.processing", $in_file);
  242 + exit 0;
  243 + };
  244 +
  245 + my $out_path = $in_path;
  246 + $out_path =~ s{${IN}}{$OUT};
  247 + my $out_file = $out_path.$in_name.($in_suffix ne ""? ".".$in_suffix: "");
  248 +
  249 + my $proc_path = $in_path;
  250 + $proc_path =~ s{${IN}}{$PROC};
  251 + my $proc_file = $proc_path.$in_name.($in_suffix ne ""? ".".$in_suffix: "");
  252 +
  253 + my $error_path = $in_path;
  254 + $error_path =~ s{${IN}}{$ERROR};
  255 + my $error_file = $error_path.$in_name.($in_suffix ne ""? ".".$in_suffix: "");
  256 +
  257 + print "\twritting to $out_file\n" if $DEBUG;
  258 +
  259 + my $stime = time;
  260 + my %pids;
  261 +
  262 + if (!move ($in_file, "$in_file.$host.processing")) {
  263 + unlink ("$in_file.$host.tmp");
  264 + exit 0;
  265 + }
  266 +
  267 + sleep 1 if (!$DEBUG);
  268 + select (undef, undef, undef, 2) if ($DEBUG);
  269 +
  270 + # Create temp dir
  271 + make_path $tmpdir;
  272 +
  273 + my $tmp_file = $tmpdir.'/'.$in_name.($in_suffix ne ""? ".".$in_suffix: "");
  274 + if (!copy ("$in_file.$host.processing", $tmp_file)) {
  275 + remove_tree ($tmpdir,{ error=> \my $dumb });
  276 + unlink ("$in_file.$host.tmp");
  277 + move ( "$in_file.$host.processing", $in_file);
  278 + };
  279 +
  280 + # Extract pages
  281 + ($exit, $cmd, @out,@err) = exec_cmd ("${PDFTK} \"${tmp_file}\" burst output \"${tmpdir}\"/pg_\%06d.pdf");
  282 + if ($DEBUG) {
  283 + print "\t\t${tmp_file} -> ${cmd}: $exit\n";
  284 + print "\t\t\t$_" for @out ;
  285 + print "\t\t\t$_" for @err ;
  286 + };
  287 +
  288 +
  289 + my ($pages, @pg_w, @pg_h, @pg_r);
  290 + $pages = get_pages ($tmp_file, \@pg_w, \@pg_h, \@pg_r);
  291 +
  292 + my (@img_w, @img_h, @img_t);
  293 + $pages = get_imgs ( $tmp_file, \@img_w, \@img_h, \@img_t);
  294 +
  295 +
  296 + for ( my $i=0; $i< $pages; $i++ ) {
  297 + my $pg = sprintf ("pg_%06d", $i+1);
  298 +
  299 + # Enforce fork limit
  300 + while (scalar keys %pids >= $MAX_PGS ) {
  301 + my @ended = child_wait (\%pids);
  302 + foreach my $ended_pid (@ended) {
  303 + delete $pids{$ended_pid};
  304 + }
  305 + }
  306 +
  307 + if (my $pid=fork) {
  308 + $pids{$pid}=$pg;
  309 + } else {
  310 + $0 = "ocr $in_name (".($i+1)."/$pages)" if(!$DEBUG);
  311 + print "\t\t${in_file}: ".(${i}+1)." / $pages: $pg_w[$i] x $pg_h[$i] - $pg_r[$i] & $img_w[$i] x $img_h[$i], $img_t[$i]\n" if $DEBUG;
  312 +
  313 + if (! defined $img_t[$i] ) {
  314 + move ("${tmpdir}/${pg}.pdf","${tmpdir}/${pg}-cpdf.pdf");
  315 + exit 0;
  316 + }
  317 +
  318 + if (is_ocred ("${tmpdir}/${pg}.pdf")) {
  319 + move ("${tmpdir}/${pg}.pdf","${tmpdir}/${pg}-cpdf.pdf");
  320 + exit 0;
  321 + }
  322 +
  323 + undef $cmd;
  324 +
  325 + if ($img_t[$i] eq "gray") {
  326 + $cmd = "${PDFIMAGES} -tiff \"${tmpdir}\"/${pg}.pdf \"${tmpdir}\"/${pg}";
  327 + }
  328 +
  329 + if ($img_t[$i] eq "rgb") {
  330 + $cmd = "${PDFTOPPM} -jpeg -scale-to-x $img_w[$i] -scale-to-y $img_h[$i] \"${tmpdir}\"/${pg}.pdf \"${tmpdir}\"/${pg}";
  331 + $pg_r[$i] = 0; # Do not rotate if it was extracted with PDFTOPPM
  332 + }
  333 +
  334 + if (!defined $cmd) {
  335 + $cmd = "${PDFTOPPM} -jpeg -scale-to-x $img_w[$i] -scale-to-y $img_h[$i] \"${tmpdir}\"/${pg}.pdf \"${tmpdir}\"/${pg}";
  336 + $pg_r[$i] = 0; # Do not rotate if it was extracted with PDFTOPPM
  337 + }
  338 +
  339 + ($exit,$cmd,@out,@err) = exec_cmd($cmd);
  340 + if ($DEBUG) {
  341 + print "\t\t\t${pg}.pdf -> ${cmd}: $exit\n";
  342 + print "\t\t\t\t$_" for @out ;
  343 + print "\t\t\t\t$_" for @err ;
  344 + };
  345 +
  346 + # Process each resulting image for page pdf
  347 + my @images = ( find ( file => name => qr/${pg}.*\.(jpg|tif)/i , in => ${tmpdir} )) ;
  348 +
  349 + foreach my $image (@images) {
  350 + print "\t\t\t${image}: ".(${i}+1)." / $pages\n" if $DEBUG;
  351 +
  352 + # Check if page was rotated
  353 + if ($pg_r[$i]) {
  354 + print "\t\t\t${image} unrotate: $pg_r[$i] graus ".(${i}+1)." / $pages\n" if $DEBUG;
  355 + ($exit,$cmd,@out,@err) = exec_cmd("${CONVERT} \"$image\" -rotate $pg_r[$i] \"$image\"");
  356 + if ($DEBUG) {
  357 + print "\t\t\t${image} -> $cmd: $exit\n";
  358 + print "\t\t\t\t$_" for @out ;
  359 + print "\t\t\t\t$_" for @err ;
  360 + };
  361 + }
  362 +
  363 + # Filter ppm images, if needed
  364 +
  365 + # OCR ppm images to pdf pages
  366 + ($exit,$cmd, @out,@err) = exec_cmd("${TESSERACT} \"${image}\" \"${image}\" pdf");
  367 + if ($DEBUG) {
  368 + print "\t\t\t${image} -> $cmd: $exit\n";
  369 + print "\t\t\t\t$_" for @out ;
  370 + print "\t\t\t\t$_" for @err ;
  371 + };
  372 +
  373 + # Scale to fit pdf
  374 + ($exit,$cmd, @out,@err) = exec_cmd("${CPDF} -scale-to-fit \"$pg_w[$i] $pg_h[$i]\" \"${image}\".pdf -o \"${image}\"-cpdf.pdf");
  375 + if ($DEBUG) {
  376 + print "\t\t\t${image} -> $cmd: $exit\n";
  377 + print "\t\t\t\t$_" for @out ;
  378 + print "\t\t\t\t$_" for @err ;
  379 + };
  380 +
  381 +
  382 + unlink ("${tmpdir}/${pg}.pdf") if (!$DEBUG);
  383 + unlink ("$image.pdf") if (!$DEBUG);
  384 + move ("${tmpdir}/${pg}.pdf","${tmpdir}/${pg}.pdf.old") if ($DEBUG);
  385 + unlink ("$image") if (!$DEBUG);
  386 + }
  387 + exit 0;
  388 + }
  389 + }
  390 +
  391 +
  392 + # Wait all pages to complete
  393 + while (wait () != -1) { sleep 1;};
  394 +
  395 + # Check if all pages where converted.
  396 + my @new_pages = ( find ( file => name => qr/pg_.*-cpdf.pdf$/i , in => ${tmpdir} )) ;
  397 +
  398 + if (scalar @new_pages != $pages) {
  399 + print "\t\t${out_file} -> Number of output pages differ (Orig.: $pages x New: ".scalar @new_pages."): $exit\n" if ($DEBUG);
  400 + syslog ("info","OCR: $in_file, number of output pages differ") if (!$DEBUG);
  401 + unlink "$in_file.$host.tmp";
  402 + move ("$in_file.$host.processing", $error_file);
  403 + exit (0);
  404 + }
  405 +
  406 + # Merge resulting pdf pages to a single pdf
  407 + make_path ($out_path) if ( ! -d $out_path);
  408 + unlink $out_file if ( -f $out_file );
  409 + ($exit, $cmd, @out,@err) = exec_cmd("${PDFTK} \"${tmpdir}\"/pg_*-cpdf.pdf cat output \"${out_file}.tmp\" compress");
  410 + if ($DEBUG) {
  411 + print "\t\t${out_file} -> $cmd: $exit\n";
  412 + print "\t\t\t$_" for @out ;
  413 + print "\t\t\t$_" for @err ;
  414 + };
  415 +
  416 + make_path ($proc_path) if ( ! -d $proc_path);
  417 + unlink $proc_file if ( -f $proc_file );
  418 + move ("$in_file.$host.processing", $proc_file);
  419 + move ("${out_file}.tmp", ${out_file});
  420 +
  421 +
  422 + # Remove temp dir
  423 + remove_tree ($tmpdir,{ error=> \my $dumb }) if (!$DEBUG);
  424 + unlink $tmp_file if (!$DEBUG);
  425 + unlink "$in_file.$host.tmp";
  426 + unlink "$in_file.png";
  427 +
  428 + my $etime = time;
  429 +
  430 + print "OCR processed: $in_file OCRed (${pages} pages in ".($etime-$stime)." segs - ". sprintf ("%.2f",($etime-$stime)/$pages)." segs/page)\n" if $DEBUG;
  431 + syslog ("info","OCR processed: $in_file(${pages} pages in ".($etime-$stime)." segs - ". sprintf ("%.2f",($etime-$stime)/$pages)." segs/page)") if !$DEBUG;
  432 +
  433 + exit (0);
  434 +}
  435 +
  436 +sub is_ocred {
  437 + my ($in_file) = @_;
  438 + my @fonts = `${PDFFONTS} -l 10 \"${in_file}\" 2>/dev/null`;
  439 +
  440 + return ( scalar @fonts > 2 ? 1 :0 );
  441 +}
  442 +
  443 +sub get_pages {
  444 + my ($in_file, $w, $h, $r) = @_;
  445 +
  446 + my $pages=0;
  447 + my $i=0;
  448 +
  449 + my $dumb;
  450 +
  451 + my ($exit, $cmd, @lines, @err) = exec_cmd("${PDFTK} \"${in_file}\" dump_data");
  452 +
  453 + foreach (@lines) {
  454 + chomp;
  455 + ($dumb, $pages) = split / {1,}/ if ( $_ =~ /NumberOfPages:/ );
  456 + ($dumb, $i ) = split / {1,}/ if ( $_ =~ /PageMediaNumber:/ );
  457 + ($dumb, @$r[$i-1]) = split / {1,}/ if ( $_ =~ /PageMediaRotation:/ );
  458 + ($dumb, @$w[$i-1], @$h[$i-1]) = split / {1,}/ if ( $_ =~ /PageMediaDimensions:/ );
  459 + }
  460 +
  461 + return $pages;
  462 +}
  463 +
  464 +sub get_imgs {
  465 + my ($in_file, $w, $h, $t) = @_;
  466 + my ($dumb, $i, $width, $height, $type);
  467 +
  468 + my ($exit, $cmd, @lines, @err) = exec_cmd("${PDFIMAGES} -list \"${in_file}\"");
  469 +
  470 + foreach my $line (@lines) {
  471 + chomp $line;
  472 + $line =~ s/^ {1,}//;
  473 + if ( $line =~ /image|mask/ ) {
  474 + ($i , $dumb, $dumb, $width, $height, $type) = split / {1,}/,$line;
  475 + @$w[$i-1] = $width;
  476 + @$h[$i-1] = $height;
  477 + @$t[$i-1] = ( $type eq "-" ? "rgb" : $type );
  478 + @$t[$i-1] = ( $type eq "icc" ? "rgb" : $type );
  479 + @$t[$i-1] = ( $type eq "index" ? "rgb" : $type );
  480 + }
  481 + }
  482 + return $i;
  483 +}
  484 +
  485 +sub get_rotation {
  486 + my ($in_file) = @_;
  487 +
  488 + my $rotation=0;
  489 + my @lines = `${PDFTK} \"${in_file}\" dump_data 2>/dev/null`;
  490 +
  491 + foreach (@lines) {
  492 + chomp;
  493 + (my $dumb, $rotation) = split / / if ( $_ =~ /PageMediaRotation:/ );
  494 + }
  495 + return $rotation;
  496 +}
  497 +
  498 +sub get_res {
  499 + my ($in_file) = @_;
  500 +
  501 + my $res_x=0;
  502 + my $res_y=0;
  503 + my @lines = `${PDFTK} \"${in_file}\" dump_data 2>/dev/null`;
  504 +
  505 + foreach (@lines) {
  506 + chomp;
  507 + (my $dumb, $res_x, $res_y) = split / / if ( $_ =~ /PageMediaDimensions:/ );
  508 + $res_x=sprintf ("%.f", $res_x);
  509 + $res_y=sprintf ("%.f", $res_y);
  510 + }
  511 + return ($res_x,$res_y);
  512 +}
  513 +
  514 +sub is_locked_ex {
  515 + my ($path) = @_;
  516 +
  517 + warn "Not a plain file: '$path'" if ( $DEBUG & (! -f $path )) ;
  518 + return 1 unless open my $fh, '<', $path;
  519 +
  520 + my $ret = not flock $fh, LOCK_SH | LOCK_NB;
  521 + close $fh
  522 + or warn "Cannot close '$path': $!";
  523 +
  524 + return $ret;
  525 +}
  526 +
  527 +sub child_wait {
  528 + my ($pids,$time) = @_;
  529 + my $count = scalar keys (%$pids);
  530 + my @ended;
  531 +
  532 + my $found=0;
  533 + while (!$found) {
  534 + foreach my $pid (keys (%$pids)) {
  535 + if (waitpid ($pid,WNOHANG)==-1) {
  536 + $found++;
  537 + push @ended, $pid;
  538 + next;
  539 + }
  540 + }
  541 + sleep 1 if (!$found);
  542 + }
  543 +
  544 + return @ended;
  545 +}
  546 +
  547 +sub exec_cmd {
  548 + my ($cmd) = @_;
  549 + my $rc;
  550 + my @out=();
  551 + my @err=();
  552 +
  553 + my $pid = open3(*CMD_IN, *CMD_OUT, *CMD_ERR, $cmd);
  554 +
  555 + $SIG{CHLD} = sub {
  556 + $rc = ($? >>8);
  557 + };
  558 +
  559 + print CMD_IN "";
  560 + close(CMD_IN);
  561 +
  562 + my $selector = IO::Select->new();
  563 + $selector->add(*CMD_ERR, *CMD_OUT);
  564 +
  565 + while (my @ready = $selector->can_read) {
  566 + foreach my $fh (@ready) {
  567 + if (fileno($fh) == fileno(CMD_ERR)) {
  568 + while (<CMD_ERR>) {
  569 + push @err,$_;
  570 + }
  571 + } else {
  572 + while (<CMD_OUT>) {
  573 + push @out,$_;
  574 + }
  575 + }
  576 + if (eof ($fh)) {
  577 + $rc = ($? >>8) if (waitpid($pid, 0)>0);
  578 + $selector->remove($fh);
  579 + }
  580 + }
  581 + }
  582 +
  583 + $rc = ($? >>8) if (waitpid($pid, 0)>0);
  584 +
  585 + close(CMD_OUT);
  586 + close(CMD_ERR);
  587 +
  588 + $SIG{CHLD} = 'IGNORE';
  589 +
  590 + return $rc,$cmd,@out,@err;
  591 +}
... ...