function setContrast($value) { return caca_set_dither_contrast($this->dt, $value); }
function main() { global $argc, $argv; $cols = 0; $lines = 0; $font_width = 6; $font_height = 10; $format = NULL; $dither = NULL; $gamma = $brightness = $contrast = -1.0; $long_options = array("width:" => 'W', "height:" => 'H', "font-width:" => 'x', "font-height:" => 'y', "format:" => 'f', "dither:" => 'd', "gamma:" => 'g', "brightness:" => 'b', "contrast:" => 'c', "help" => 'h', "version" => 'v'); try { while ($opt_and_arg = mygetopt("W:H:f:d:g:b:c:hvx:y:", array_keys($long_options))) { $opt = $opt_and_arg[0]; $arg = $opt_and_arg[1]; if (substr($opt, 0, 2) == '--' && array_key_exists(substr($opt, strlen('--')) . ($arg !== NULL ? ':' : ''), $long_options)) { $opt = '-' . $long_options[substr($opt, strlen('--')) . ($arg !== NULL ? ':' : '')]; } switch ($opt) { case '-W': /* --width */ $cols = intval($arg); break; case '-H': /* --height */ $lines = intval($arg); break; case '-x': /* --width */ $font_width = intval($arg); break; case '-y': /* --height */ $font_height = intval($arg); break; case '-f': /* --format */ $format = $arg; break; case '-d': /* --dither */ $dither = $arg; break; case '-g': /* --gamma */ $gamma = floatval($arg); break; case '-b': /* --brightness */ $brightness = floatval($arg); break; case '-c': /* --contrast */ $contrast = floatval($arg); break; case '-h': /* --help */ usage($argc, $argv); return 0; case '-v': /* --version */ version(); return 0; default: return 1; } } } catch (MygetoptException $e) { fprintf(STDERR, "%s", $argv[0] . ": " . $e->getMessage() . "\n"); usage($argc, $argv); return 2; } if ($argc != 2) { fprintf(STDERR, "%s: wrong argument count\n", $argv[0]); usage($argc, $argv); return 1; } $cv = caca_create_canvas(0, 0); if (!$cv) { fprintf(STDERR, "%s: unable to initialise libcaca\n", $argv[0]); return 1; } $i_str = file_get_contents($argv[$argc - 1]); $i = $i_str ? imagecreatefromstring($i_str) : NULL; if (!$i) { fprintf(STDERR, "%s: unable to load %s\n", $argv[0], $argv[$argc - 1]); return 1; } /* Assume a 6×10 font */ if (!$cols && !$lines) { $cols = 60; $lines = $cols * imagesy($i) * $font_width / imagesx($i) / $font_height; } else { if ($cols && !$lines) { $lines = $cols * imagesy($i) * $font_width / imagesx($i) / $font_height; } else { if (!$cols && $lines) { $cols = $lines * imagesx($i) * $font_height / imagesy($i) / $font_width; } } } caca_set_canvas_size($cv, $cols, $lines); caca_set_color_ansi($cv, CACA_DEFAULT, CACA_TRANSPARENT); caca_clear_canvas($cv); $i_dither = caca_create_dither($i); if (!caca_set_dither_algorithm($i_dither, $dither ? $dither : "fstein")) { fprintf(STDERR, "%s: Can't dither image with algorithm '%s'\n", $argv[0], $dither ? $dither : "fstein"); return -1; } if ($brightness != -1) { caca_set_dither_brightness($i_dither, $brightness); } if ($contrast != -1) { caca_set_dither_contrast($i_dither, $contrast); } if ($gamma != -1) { caca_set_dither_gamma($i_dither, $gamma); } caca_dither_bitmap($cv, 0, 0, $cols, $lines, $i_dither, $i); $export = caca_export_string($cv, $format ? $format : "ansi"); if (!$export) { fprintf(STDERR, "%s: Can't export to format '%s'\n", $argv[0], $format ? $format : "ansi"); return -1; } else { echo $export; } return 0; }
function main() { global $file, $filename; global $argc, $argv; global $stderr; $cols = 0; $lines = 0; $font_width = 6; $font_height = 10; $format = NULL; $dither = NULL; $gamma = $brightness = $contrast = -1.0; $long_options = array("width:" => 'W', "height:" => 'H', "font-width:" => 'x', "font-height:" => 'y', "format:" => 'f', "dither:" => 'd', "gamma:" => 'g', "brightness:" => 'b', "contrast:" => 'c', "help" => 'h', "version" => 'v'); try { while ($opt_and_arg = mygetopt("W:H:f:d:g:b:c:hvx:y:", array_keys($long_options))) { $opt = $opt_and_arg[0]; $arg = $opt_and_arg[1]; if (substr($opt, 0, 2) == '--' && array_key_exists(substr($opt, strlen('--')) . ($arg !== NULL ? ':' : ''), $long_options)) { $opt = '-' . $long_options[substr($opt, strlen('--')) . ($arg !== NULL ? ':' : '')]; } switch ($opt) { case '-W': /* --width */ $cols = intval($arg); break; case '-H': /* --height */ $lines = intval($arg); break; case '-x': /* --width */ $font_width = intval($arg); break; case '-y': /* --height */ $font_height = intval($arg); break; case '-f': /* --format */ $format = $arg; break; case '-d': /* --dither */ $dither = $arg; break; case '-g': /* --gamma */ $gamma = floatval($arg); break; case '-b': /* --brightness */ $brightness = floatval($arg); break; case '-c': /* --contrast */ $contrast = floatval($arg); break; case '-h': /* --help */ usage($argc, $argv); return 0; case '-v': /* --version */ version(); return 0; default: return 1; } } } catch (MygetoptException $e) { $stderr .= $argv[0] . ": " . $e->getMessage() . "\n"; usage($argc, $argv); return 2; } if (!$file && $argc == 2 && $argv[1] == 'logo-caca.png') { $file = 'logo-caca.png'; $argc = 1; } else { if ($filename && $file && $argc == 2 && strtolower(basename($argv[1])) == strtolower(basename($filename))) { $argc = 1; } } if ($argc == 2) { $stderr .= sprintf("%s: image not found\n", $argv[1]); return 1; } if ($argc > 2) { $stderr .= sprintf("%s: too many arguments\n", $argv[0]); usage($argc, $argv); return 1; } if (!$file) { $stderr .= sprintf("%s: no image was provided\n", $argv[0]); usage($argc, $argv); return 1; } $cv = caca_create_canvas(0, 0); if (!$cv) { $stderr .= sprintf("%s: unable to initialise libcaca\n", $argv[0]); return 1; } $i_str = $file ? file_get_contents($file) : NULL; $i = $i_str ? imagecreatefromstring($i_str) : NULL; if (!$i) { $stderr .= sprintf("%s: unable to load %s\n", $argv[0], $filename); return 1; } /* Assume a 6×10 font */ if (!$cols && !$lines) { $cols = 60; $lines = $cols * imagesy($i) * $font_width / imagesx($i) / $font_height; } else { if ($cols && !$lines) { $lines = $cols * imagesy($i) * $font_width / imagesx($i) / $font_height; } else { if (!$cols && $lines) { $cols = $lines * imagesx($i) * $font_height / imagesy($i) / $font_width; } } } caca_set_canvas_size($cv, $cols, $lines); caca_set_color_ansi($cv, CACA_DEFAULT, CACA_TRANSPARENT); caca_clear_canvas($cv); $i_dither = caca_create_dither($i); if (!caca_set_dither_algorithm($i_dither, $dither ? $dither : "fstein")) { $stderr .= sprintf("%s: Can't dither image with algorithm '%s'\n", $argv[0], $dither ? $dither : "fstein"); return -1; } if ($brightness != -1) { caca_set_dither_brightness($i_dither, $brightness); } if ($contrast != -1) { caca_set_dither_contrast($i_dither, $contrast); } if ($gamma != -1) { caca_set_dither_gamma($i_dither, $gamma); } caca_dither_bitmap($cv, 0, 0, $cols, $lines, $i_dither, $i); $format = $format ? $format : 'html'; $export = caca_export_string($cv, $format); if (!$export) { $stderr .= sprintf("%s: Can't export to format '%s'\n", $argv[0], $format); return -1; } else { $content_type_map = array('ansi' => 'text/plain; charset=CP437', 'utf8' => 'text/plain; charset=UTF-8', 'utf8cr' => 'text/plain; charset=UTF-8', 'html' => 'text/html; charset=UTF-8', 'html3' => 'text/html; charset=UTF-8', 'bbfr' => 'text/plain; charset=UTF-8', 'irc' => 'text/plain; charset=UTF-8', 'ps' => 'application/postscript', 'svg' => 'image/svg+xml', 'tga' => 'image/x-targa'); $download_extension_map = array('caca' => 'caca', 'ansi' => 'txt', 'utf8' => 'txt', 'utf8cr' => 'txt', 'irc' => 'txt', 'tga' => 'tga'); $inline_extension_map = array('bbfr' => 'txt', 'ps' => 'ps', 'svg' => 'svg'); if (!array_key_exists($format, $content_type_map)) { $content_type = 'application/octet-stream'; } else { $content_type = $content_type_map[$format]; } header('Content-Type: ' . $content_type); if (array_key_exists($format, $download_extension_map)) { header('Content-Disposition: attachment; filename=export.' . $download_extension_map[$format]); } else { if (array_key_exists($format, $inline_extension_map)) { header('Content-Disposition: inline; filename=export.' . $inline_extension_map[$format]); } } echo $export; } return 0; }