129 lines
5.0 KiB
PHP
129 lines
5.0 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2011 Chad Parry
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class rawphoto_graphics {
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static function detect_dcraw() {
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$dcraw = new stdClass();
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$path = system::find_binary("dcraw");
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if (empty($path)) {
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$dcraw->installed = false;
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$dcraw->error = t("The <em>dcraw</em> tool could not be located on your system.");
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} else {
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$dcraw->path = $path;
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if (!@is_file($path)) {
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$dcraw->installed = false;
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$dcraw->error = t("The <em>dcraw</em> tool is installed, " .
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"but PHP's <code>open_basedir</code> restriction " .
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"prevents Gallery from using it.");
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} else if (!preg_match('/^Raw [Pp]hoto [Dd]ecoder(?: "dcraw")? v(\S+)$/m',
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shell_exec(escapeshellcmd($path) . " 2>&1"), $matches)) {
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$dcraw->installed = false;
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$dcraw->error = t("The <em>dcraw</em> tool is installed, " .
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"but the version is not recognized.");
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} else {
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$dcraw->version = $matches[1];
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$dcraw->installed = true;
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}
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}
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return $dcraw;
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}
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static function get_supported_toolkits() {
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return array("imagemagick" => "ImageMagick",
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"graphicsmagick" => "GraphicsMagick");
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}
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static function report_dcraw_support($dcraw) {
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if ($dcraw->installed) {
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site_status::clear("rawphoto_needs_dcraw");
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} else {
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site_status::warning(
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t('The <em>Raw Photos</em> module requires the <a href="%dcraw_url"><em>dcraw</em> tool</a> to be installed.',
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array("dcraw_url" => "http://www.cybercom.net/~dcoffin/dcraw/")),
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"rawphoto_needs_dcraw");
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}
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}
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static function report_ppm_support($toolkit_id) {
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if (array_key_exists($toolkit_id, rawphoto_graphics::get_supported_toolkits())) {
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site_status::clear("rawphoto_needs_ppm_support");
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} else {
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site_status::warning(
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t('The <em>Raw Photos</em> module requires a supporting graphics toolkit. ' .
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'<a href="%activate_url">Activate</a> either ImageMagick or GraphicsMagick.',
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array("activate_url" => url::site("admin/graphics"))),
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"rawphoto_needs_ppm_support");
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}
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}
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static function convert($input_file, $output_file) {
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$success = false;
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$dcraw = rawphoto_graphics::detect_dcraw();
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if ($dcraw->installed) {
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// Use dcraw to convert from a raw image to a standard pixmap.
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$cmd = escapeshellcmd($dcraw->path) . " -c -w ";
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if (version_compare($dcraw->version, "6.00", ">=")) {
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$cmd .= "-t 0 ";
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}
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if (version_compare($dcraw->version, "8.81", ">=")) {
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$cmd .= "-W ";
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}
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$icc_path = module::get_var("rawphoto", "icc_path");
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if (!empty($icc_path) && version_compare($dcraw->version, "8.00", ">=")) {
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$cmd .= "-p " . escapeshellarg($icc_path) . " ";
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}
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$cmd .= escapeshellarg($input_file);
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// Then use the graphics toolkit to convert the stream to a JPEG.
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$cmd .= " | ";
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$toolkit_id = module::get_var("gallery", "graphics_toolkit");
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$toolkit_path = module::get_var("gallery", "graphics_toolkit_path");
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$image_quality = module::get_var("gallery", "image_quality");
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$toolkit_compat = false;
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switch ($toolkit_id) {
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case 'imagemagick':
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$cmd .= escapeshellcmd("$toolkit_path/convert");
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$cmd .= " -quality " . escapeshellarg($image_quality . "%");
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$cmd .= " - " . escapeshellarg($output_file);
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$toolkit_compat = true;
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break;
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case 'graphicsmagick':
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$cmd .= escapeshellcmd("$toolkit_path/gm");
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$cmd .= " convert -quality " . escapeshellarg($image_quality . "%");
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$cmd .= " - " . escapeshellarg($output_file);
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$toolkit_compat = true;
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break;
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default:
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log::warning("rawphoto", "Cannot convert raw photo with graphics toolkit: " .
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$toolkit_id->active);
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}
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if ($toolkit_compat) {
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exec($cmd, $output, $return_var);
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// Failure is common, because dcraw will abort unless the original image is a raw photo.
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$success = ($return_var == 0);
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if (!$success) {
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@unlink($output_file);
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}
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}
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}
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return $success;
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}
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}
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