ale

   1 #!/usr/bin/perl -w
   2
   3 # ALE wrapper script
   4 #
   5 # Copyright (C) 2007 David Hilvert
   6 #
   7 #     This program is free software; you can redistribute it and/or modify
   8 #     it under the terms of the GNU General Public License as published by
   9 #     the Free Software Foundation; either version 3 of the License, or
  10 #     (at your option) any later version.
  11 #
  12 #     This program is distributed in the hope that it will be useful,
  13 #     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 #     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 #     GNU General Public License for more details.
  16 #
  17 #     You should have received a copy of the GNU General Public License
  18 #     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 %defaults = (
  21         "ALE_BIN" => "ale-bin",
  22         "DCRAW" => "dcraw",
  23         "EXIF_UTILITY" => "exiftool",
  24 );
  25
  26 %devices = (
  27         "Canon EOS 5D" => "canon_300d",
  28         "Canon EOS DIGITAL REBEL" => "canon_300d",
  29 );
  30
  31 for $default (keys %defaults) {
  32         if (!defined $ENV{$default}) {
  33                 $ENV{$default} = $defaults{$default};
  34         }
  35 }
  36
  37 #
  38 # Perform metadata extraction and conversion
  39 #
  40
  41 $started_conversion = 0;
  42 undef $global_device;
  43 for ($i = 0; $i < @ARGV; $i++) {
  44         $arg = $ARGV[$i];
  45
  46         $i += 10 if $arg =~ /^-?-3dvp$/;
  47         $i += 10 if $arg =~ /^-?-3dpp$/;
  48         $i += 2  if $arg =~ /^-?-3dp$/;
  49         $i += 2  if $arg =~ /^-?-3dv$/;
  50         $i += 2  if $arg =~ /^-?-ochain$/;
  51         $i += 3  if $arg =~ /^-?-wm$/;
  52         $i += 3  if $arg =~ /^-?-wmx$/;
  53
  54         next if (!-e $arg);
  55
  56         if (defined $ENV{"EXIF_UTILITY"} && `which $ENV{"EXIF_UTILITY"}`) {
  57                 if (`$ENV{"EXIF_UTILITY"} $arg | grep '^EV'` =~ /([0-9\.]+)/) {
  58                         $ev = $1;
  59                         if (`$ENV{"EXIF_UTILITY"} $arg | grep '^ISO'` =~ /([0-9\.]+)/) {
  60                                 $ev = $ev - log($1 / 100) / log(2);
  61                         }
  62                         @ARGV = (@ARGV[0..$i - 1], "--ev", "$ev", @ARGV[$i..$#ARGV]);
  63                         $i += 2;
  64                 }
  65         }
  66
  67         if (defined $ENV{"DCRAW"} && `which $ENV{"DCRAW"}`) {
  68                 $device_info = `$ENV{"DCRAW"} -i $arg 2> /dev/null`;
  69
  70                 next if ($?);
  71
  72                 if (!$started_conversion) {
  73                         print "Extracting frame data";
  74                         $started_conversion = 1;
  75
  76                         #
  77                         # Make a temporary directory for conversion
  78                         #
  79
  80                         use File::Temp qw/ tempdir /;
  81
  82                         $tempdir = tempdir("ale.XXXXXXXXX",
  83                                            CLEANUP => 1,
  84                                            DIR => File::Spec->tmpdir());
  85                 }
  86
  87                 #
  88                 # Get device information
  89                 #
  90
  91                 undef $device;
  92                 foreach $device_string (keys %devices) {
  93                         if ($device_info =~ /$device_string/) {
  94                                 $device = $devices{$device_string};
  95                                 last;
  96                         }
  97                 }
  98                 if (!defined $device) {
  99                         $device = "canon_300d";
 100                 }
 101
 102                 #
 103                 # Currently, devices must be global.
 104                 #
 105
 106                 if (defined $global_device && $global_device ne $device) {
 107                         die "Multiple device types not yet supported.\n";
 108                 } else {
 109                         $global_device = $device;
 110                 }
 111
 112                 # @ARGV = (@ARGV[0..$i - 1], "--device", "$device", @ARGV[$i..$#ARGV]);
 113                 @ARGV = ("--device", "$device", @ARGV);
 114
 115                 $i += 2;
 116
 117                 #
 118                 # Convert
 119                 #
 120
 121                 $converted_frame = $arg;
 122                 $converted_frame =~ s/(?:\.[^.]*)?$/.pgm/;
 123                 $converted_frame =~ s/.*\///;
 124                 $converted_frame = $tempdir . "/" . $converted_frame;
 125
 126                 `$ENV{"DCRAW"} -t 0 -d -4 -k 0 -r 1 1 1 1 -c $arg > $converted_frame`;
 127
 128                 $ARGV[$i] = $converted_frame;
 129
 130                 #
 131                 # Try to get black level information
 132                 #
 133
 134                 # XXX: The following approach is not obviously correct.
 135
 136                 if (`$ENV{"DCRAW"} -d -v -c $arg 2>&1 1>/dev/null` =~ /black=(\d+)/) {
 137                         $black_unscaled = $1;
 138                         `$ENV{"DCRAW"} -D -4 -c $arg | pgmhist | tail -1` =~ /(\d+)/;
 139                         $maxval_unscaled = $1;
 140                         `pgmhist $converted_frame | tail -1` =~ /(\d+)/;
 141                         $maxval_scaled = $1;
 142
 143                         $black_scaled = $black_unscaled
 144                                       * ($maxval_scaled / $maxval_unscaled)
 145                                       / 65535;
 146
 147                         @ARGV = (@ARGV[0..$i - 1], "--black", "$black_scaled", @ARGV[$i..$#ARGV]);
 148                         $i += 2;
 149                 }
 150
 151                 print ".";
 152         }
 153 }
 154
 155 if ($started_conversion) {
 156         print "\n";
 157 }
 158
 159 @ARGV = ($0, @ARGV);
 160 system { $ENV{"ALE_BIN"} } @ARGV;