70 lines
1.9 KiB
PHP
70 lines
1.9 KiB
PHP
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<?php
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class ComicPressImageMagickProcessing {
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function get_image_size($path) { return false; }
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function convert_to_rgb($source, $target, $quality) {
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exec(implode(" ", array("convert",
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"\"{$source}\"",
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"-colorspace rgb",
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"\"${target}\"")));
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return file_exists($target);
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}
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function generate_thumbnails($source, $targets_and_constraints, $target_format, $thumbnail_quality) {
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$files_created_in_operation = array();
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$unique_colors = exec("identify -format '%k' '${$source}'");
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if (empty($unique_colors)) { $unique_colors = 256; }
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$ok = true;
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foreach ($targets_and_constraints as $target_and_constraint) {
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list($target, $constraint) = $target_and_constraint;
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$width_to_use = $constraint['width'];
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$command = array("convert",
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"\"${source}\"",
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"-filter Lanczos",
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"-resize " . $width_to_use . "x");
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$im_target = $target;
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switch(strtolower($target_format)) {
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case "jpg":
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case "jpeg":
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$command[] = "-quality " . $thumbnail_quality;
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break;
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case "gif":
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$command[] = "-colors ${unique_colors}";
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break;
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case "png":
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if ($unique_colors <= 256) {
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$im_target = "png8:${im_target}";
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$command[] = "-colors ${unique_colors}";
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}
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$command[] = "-quality 100";
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break;
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default:
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}
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$command[] = "\"${im_target}\"";
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$convert_to_thumb = escapeshellcmd(implode(" ", $command));
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exec($convert_to_thumb);
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if (!file_exists($target)) {
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$ok = false;
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} else {
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@chmod($target, CPM_FILE_UPLOAD_CHMOD);
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$files_created_in_operation[] = $target;
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}
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}
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return ($ok) ? $files_created_in_operation :false;
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}
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}
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?>
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