503 lines
19 KiB
PHP
503 lines
19 KiB
PHP
<?php declare(strict_types=1);
|
|
|
|
require_once "config.php";
|
|
/*
|
|
* This is used by the image transcoding code when there is an error while transcoding
|
|
*/
|
|
class ImageTranscodeException extends SCoreException
|
|
{
|
|
}
|
|
|
|
|
|
class TranscodeImage extends Extension
|
|
{
|
|
/** @var TranscodeImageTheme */
|
|
protected ?Themelet $theme;
|
|
|
|
const ACTION_BULK_TRANSCODE = "bulk_transcode";
|
|
|
|
const INPUT_MIMES = [
|
|
"BMP" => MimeType::BMP,
|
|
"GIF" => MimeType::GIF,
|
|
"ICO" => MimeType::ICO,
|
|
"JPG" => MimeType::JPEG,
|
|
"PNG" => MimeType::PNG,
|
|
"PPM" => MimeType::PPM,
|
|
"PSD" => MimeType::PSD,
|
|
"TIFF" => MimeType::TIFF,
|
|
"WEBP" => MimeType::WEBP,
|
|
"TGA" => MimeType::TGA
|
|
];
|
|
|
|
const OUTPUT_MIMES = [
|
|
"" => "",
|
|
"JPEG (lossy)" => MimeType::JPEG,
|
|
"PNG (lossless)" => MimeType::PNG,
|
|
"WEBP (lossy)" => MimeType::WEBP,
|
|
"WEBP (lossless)" => MimeType::WEBP_LOSSLESS,
|
|
];
|
|
|
|
/**
|
|
* Needs to be after upload, but before the processing extensions
|
|
*/
|
|
public function get_priority(): int
|
|
{
|
|
return 45;
|
|
}
|
|
|
|
|
|
public function onInitExt(InitExtEvent $event)
|
|
{
|
|
global $config;
|
|
$config->set_default_bool(TranscodeConfig::ENABLED, true);
|
|
$config->set_default_bool(TranscodeConfig::GET_ENABLED, false);
|
|
$config->set_default_bool(TranscodeConfig::UPLOAD, false);
|
|
$config->set_default_string(TranscodeConfig::ENGINE, MediaEngine::GD);
|
|
$config->set_default_int(TranscodeConfig::QUALITY, 80);
|
|
$config->set_default_string(TranscodeConfig::ALPHA_COLOR, Media::DEFAULT_ALPHA_CONVERSION_COLOR);
|
|
|
|
foreach (array_values(self::INPUT_MIMES) as $mime) {
|
|
$config->set_default_string(self::get_mapping_name($mime), "");
|
|
}
|
|
}
|
|
|
|
private static function get_mapping_name(string $mime): string
|
|
{
|
|
$mime = str_replace(".", "_", $mime);
|
|
$mime = str_replace("/", "_", $mime);
|
|
return TranscodeConfig::UPLOAD_PREFIX.$mime;
|
|
}
|
|
|
|
private static function get_mapping(String $mime): ?string
|
|
{
|
|
global $config;
|
|
return $config->get_string(self::get_mapping_name($mime));
|
|
}
|
|
private static function set_mapping(String $from_mime, ?String $to_mime): void
|
|
{
|
|
global $config;
|
|
$config->set_string(self::get_mapping_name($from_mime), $to_mime);
|
|
}
|
|
|
|
public static function get_enabled_mimes(): array
|
|
{
|
|
$output = [];
|
|
foreach (array_values(self::INPUT_MIMES) as $mime) {
|
|
$value = self::get_mapping($mime);
|
|
if (!empty($value)) {
|
|
$output[] = $mime;
|
|
}
|
|
}
|
|
return $output;
|
|
}
|
|
|
|
public function onDatabaseUpgrade(DatabaseUpgradeEvent $event)
|
|
{
|
|
if ($this->get_version(TranscodeConfig::VERSION) < 1) {
|
|
$old_extensions =[];
|
|
foreach (array_values(self::INPUT_MIMES) as $mime) {
|
|
$old_extensions = array_merge($old_extensions, FileExtension::get_all_for_mime($mime));
|
|
}
|
|
|
|
foreach ($old_extensions as $old_extension) {
|
|
$oldValue = $this->get_mapping($old_extension);
|
|
if (!empty($oldValue)) {
|
|
$from_mime = MimeType::get_for_extension($old_extension);
|
|
if (empty($from_mime)) {
|
|
continue;
|
|
}
|
|
|
|
$to_mime = MimeType::get_for_extension($oldValue);
|
|
if (empty($to_mime)) {
|
|
continue;
|
|
}
|
|
|
|
$this->set_mapping($from_mime, $to_mime);
|
|
$this->set_mapping($old_extension, null);
|
|
}
|
|
}
|
|
|
|
$this->set_version(TranscodeConfig::VERSION, 1);
|
|
}
|
|
}
|
|
|
|
|
|
public function onImageAdminBlockBuilding(ImageAdminBlockBuildingEvent $event)
|
|
{
|
|
global $user, $config;
|
|
|
|
if ($user->can(Permissions::EDIT_FILES) && $event->context != "report") {
|
|
$engine = $config->get_string(TranscodeConfig::ENGINE);
|
|
if ($this->can_convert_mime($engine, $event->image->get_mime())) {
|
|
$options = $this->get_supported_output_mimes($engine, $event->image->get_mime());
|
|
$event->add_part($this->theme->get_transcode_html($event->image, $options));
|
|
}
|
|
}
|
|
}
|
|
|
|
public function onSetupBuilding(SetupBuildingEvent $event)
|
|
{
|
|
global $config;
|
|
|
|
$engine = $config->get_string(TranscodeConfig::ENGINE);
|
|
|
|
|
|
$sb = $event->panel->create_new_block("Image Transcode");
|
|
$sb->start_table();
|
|
$sb->add_bool_option(TranscodeConfig::ENABLED, "Allow transcoding images", true);
|
|
$sb->add_bool_option(TranscodeConfig::GET_ENABLED, "Enable GET args", true);
|
|
$sb->add_bool_option(TranscodeConfig::UPLOAD, "Transcode on upload", true);
|
|
$sb->add_choice_option(TranscodeConfig::ENGINE, MediaEngine::IMAGE_ENGINES, "Engine", true);
|
|
foreach (self::INPUT_MIMES as $display=> $mime) {
|
|
if (MediaEngine::is_input_supported($engine, $mime)) {
|
|
$outputs = $this->get_supported_output_mimes($engine, $mime);
|
|
$sb->add_choice_option(self::get_mapping_name($mime), $outputs, "$display", true);
|
|
}
|
|
}
|
|
$sb->add_int_option(TranscodeConfig::QUALITY, "Lossy Format Quality", true);
|
|
$sb->add_color_option(TranscodeConfig::ALPHA_COLOR, "Alpha Conversion Color", true);
|
|
$sb->end_table();
|
|
}
|
|
|
|
public function onDataUpload(DataUploadEvent $event)
|
|
{
|
|
global $config;
|
|
|
|
if ($config->get_bool(TranscodeConfig::UPLOAD) == true) {
|
|
$mime = strtolower($event->mime);
|
|
if ($mime===MimeType::GIF&&MimeType::is_animated_gif($event->tmpname)) {
|
|
return;
|
|
}
|
|
|
|
if (in_array($mime, array_values(self::INPUT_MIMES))) {
|
|
$target_mime = self::get_mapping($mime);
|
|
if (empty($target_mime)) {
|
|
return;
|
|
}
|
|
try {
|
|
$new_image = $this->transcode_image($event->tmpname, $mime, $target_mime);
|
|
$event->set_mime($target_mime);
|
|
$event->set_tmpname($new_image);
|
|
} catch (Exception $e) {
|
|
log_error("transcode", "Error while performing upload transcode: ".$e->getMessage());
|
|
// We don't want to interfere with the upload process,
|
|
// so if something goes wrong the untranscoded image jsut continues
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
public function onPageRequest(PageRequestEvent $event)
|
|
{
|
|
global $page, $user;
|
|
|
|
if ($event->page_matches("transcode") && $user->can(Permissions::EDIT_FILES)) {
|
|
if ($event->count_args() >= 1) {
|
|
$image_id = int_escape($event->get_arg(0));
|
|
} elseif (isset($_POST['image_id'])) {
|
|
$image_id = int_escape($_POST['image_id']);
|
|
} else {
|
|
throw new ImageTranscodeException("Can not resize Image: No valid Post ID given.");
|
|
}
|
|
$image_obj = Image::by_id($image_id);
|
|
if (is_null($image_obj)) {
|
|
$this->theme->display_error(404, "Post not found", "No image in the database has the ID #$image_id");
|
|
} else {
|
|
if (isset($_POST['transcode_mime'])) {
|
|
try {
|
|
$this->transcode_and_replace_image($image_obj, $_POST['transcode_mime']);
|
|
$page->set_mode(PageMode::REDIRECT);
|
|
$page->set_redirect(make_link("post/view/".$image_id));
|
|
} catch (ImageTranscodeException $e) {
|
|
$this->theme->display_transcode_error($page, "Error Transcoding", $e->getMessage());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public function onImageDownloading(ImageDownloadingEvent $event)
|
|
{
|
|
global $config, $user;
|
|
|
|
if ($config->get_bool(TranscodeConfig::GET_ENABLED) &&
|
|
isset($_GET['transcode']) &&
|
|
$user->can(Permissions::EDIT_FILES) &&
|
|
$this->can_convert_mime($config->get_string(TranscodeConfig::ENGINE), $event->image->get_mime())) {
|
|
$target_mime = $_GET['transcode'];
|
|
|
|
if (!MimeType::is_mime($target_mime)) {
|
|
$target_mime = MimeType::get_for_extension($target_mime);
|
|
}
|
|
if (empty($target_mime)) {
|
|
throw new ImageTranscodeException("Unable to determine output MIME for ".$_GET['transcode']);
|
|
}
|
|
|
|
MediaEngine::is_output_supported($config->get_string(TranscodeConfig::ENGINE), $target_mime);
|
|
|
|
$source_mime = $event->image->get_mime();
|
|
|
|
if ($source_mime!=$target_mime) {
|
|
$tmp_filename = $this->transcode_image($event->path, $source_mime, $target_mime);
|
|
|
|
if ($event->file_modified===true&&$event->path!=$event->image->get_image_filename()) {
|
|
// This means that we're dealing with a temp file that will need cleaned up
|
|
unlink($event->path);
|
|
}
|
|
|
|
$event->path = $tmp_filename;
|
|
$event->mime = $target_mime;
|
|
$event->file_modified = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
public function onBulkActionBlockBuilding(BulkActionBlockBuildingEvent $event)
|
|
{
|
|
global $user, $config;
|
|
|
|
$engine = $config->get_string(TranscodeConfig::ENGINE);
|
|
|
|
if ($user->can(Permissions::EDIT_FILES)) {
|
|
$event->add_action(self::ACTION_BULK_TRANSCODE, "Transcode Image", null, "", $this->theme->get_transcode_picker_html($this->get_supported_output_mimes($engine)));
|
|
}
|
|
}
|
|
|
|
public function onBulkAction(BulkActionEvent $event)
|
|
{
|
|
global $user, $database, $page;
|
|
|
|
switch ($event->action) {
|
|
case self::ACTION_BULK_TRANSCODE:
|
|
if (!isset($_POST['transcode_mime'])) {
|
|
return;
|
|
}
|
|
if ($user->can(Permissions::EDIT_FILES)) {
|
|
$mime = $_POST['transcode_mime'];
|
|
$total = 0;
|
|
$size_difference = 0;
|
|
foreach ($event->items as $image) {
|
|
try {
|
|
$database->begin_transaction();
|
|
|
|
$before_size = $image->filesize;
|
|
|
|
$new_image = $this->transcode_and_replace_image($image, $mime);
|
|
// If a subsequent transcode fails, the database needs to have everything about the previous
|
|
// transcodes recorded already, otherwise the image entries will be stuck pointing to
|
|
// missing image files
|
|
$database->commit();
|
|
$total++;
|
|
$size_difference += ($before_size - $new_image->filesize);
|
|
} catch (Exception $e) {
|
|
log_error("transcode", "Error while bulk transcode on item {$image->id} to $mime: ".$e->getMessage());
|
|
try {
|
|
$database->rollback();
|
|
} catch (Exception $e) {
|
|
// is this safe? o.o
|
|
}
|
|
}
|
|
}
|
|
if ($size_difference>0) {
|
|
$page->flash("Transcoded $total items, reduced size by ".human_filesize($size_difference));
|
|
} elseif ($size_difference<0) {
|
|
$page->flash("Transcoded $total items, increased size by ".human_filesize(-1*$size_difference));
|
|
} else {
|
|
$page->flash("Transcoded $total items, no size difference");
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
private function can_convert_mime($engine, $mime): bool
|
|
{
|
|
return MediaEngine::is_input_supported($engine, $mime);
|
|
}
|
|
|
|
|
|
private function get_supported_output_mimes($engine, ?String $omit_mime = null): array
|
|
{
|
|
$output = [];
|
|
|
|
|
|
foreach (self::OUTPUT_MIMES as $key=> $value) {
|
|
if ($value=="") {
|
|
$output[$key] = $value;
|
|
continue;
|
|
}
|
|
if (MediaEngine::is_output_supported($engine, $value)
|
|
&&(empty($omit_mime)||$omit_mime!=$value)) {
|
|
$output[$key] = $value;
|
|
}
|
|
}
|
|
return $output;
|
|
}
|
|
|
|
|
|
|
|
private function transcode_and_replace_image(Image $image_obj, String $target_mime): Image
|
|
{
|
|
$original_file = warehouse_path(Image::IMAGE_DIR, $image_obj->hash);
|
|
|
|
$tmp_filename = $this->transcode_image($original_file, $image_obj->get_mime(), $target_mime);
|
|
|
|
$new_image = new Image();
|
|
$new_image->hash = md5_file($tmp_filename);
|
|
$new_image->filesize = filesize($tmp_filename);
|
|
$new_image->filename = $image_obj->filename;
|
|
$new_image->width = $image_obj->width;
|
|
$new_image->height = $image_obj->height;
|
|
|
|
/* Move the new image into the main storage location */
|
|
$target = warehouse_path(Image::IMAGE_DIR, $new_image->hash);
|
|
if (!@copy($tmp_filename, $target)) {
|
|
throw new ImageTranscodeException("Failed to copy new image file from temporary location ({$tmp_filename}) to archive ($target)");
|
|
}
|
|
|
|
/* Remove temporary file */
|
|
@unlink($tmp_filename);
|
|
|
|
send_event(new ImageReplaceEvent($image_obj->id, $new_image));
|
|
|
|
return $new_image;
|
|
}
|
|
|
|
|
|
private function transcode_image(String $source_name, String $source_mime, string $target_mime): string
|
|
{
|
|
global $config;
|
|
|
|
if ($source_mime==$target_mime) {
|
|
throw new ImageTranscodeException("Source and target MIMEs are the same: ".$source_mime);
|
|
}
|
|
|
|
$engine = $config->get_string(TranscodeConfig::ENGINE);
|
|
|
|
|
|
|
|
if (!$this->can_convert_mime($engine, $source_mime)) {
|
|
throw new ImageTranscodeException("Engine $engine does not support input MIME $source_mime");
|
|
}
|
|
if (!MediaEngine::is_output_supported($engine, $target_mime)) {
|
|
throw new ImageTranscodeException("Engine $engine does not support output MIME $target_mime");
|
|
}
|
|
|
|
switch ($engine) {
|
|
case "gd":
|
|
return $this->transcode_image_gd($source_name, $source_mime, $target_mime);
|
|
case "convert":
|
|
return $this->transcode_image_convert($source_name, $source_mime, $target_mime);
|
|
default:
|
|
throw new ImageTranscodeException("No engine specified");
|
|
}
|
|
}
|
|
|
|
private function transcode_image_gd(String $source_name, String $source_mime, string $target_mime): string
|
|
{
|
|
global $config;
|
|
|
|
$q = $config->get_int(TranscodeConfig::QUALITY);
|
|
|
|
$tmp_name = tempnam(sys_get_temp_dir(), "shimmie_transcode");
|
|
|
|
$image = imagecreatefromstring(file_get_contents($source_name));
|
|
try {
|
|
$result = false;
|
|
switch ($target_mime) {
|
|
case MimeType::WEBP:
|
|
$result = imagewebp($image, $tmp_name, $q);
|
|
break;
|
|
case MimeType::PNG:
|
|
$result = imagepng($image, $tmp_name, 9);
|
|
break;
|
|
case MimeType::JPEG:
|
|
// In case of alpha channels
|
|
$width = imagesx($image);
|
|
$height = imagesy($image);
|
|
$new_image = imagecreatetruecolor($width, $height);
|
|
if ($new_image===false) {
|
|
throw new ImageTranscodeException("Could not create image with dimensions $width x $height");
|
|
}
|
|
try {
|
|
$background_color = Media::hex_color_allocate($new_image, $config->get_string(TranscodeConfig::ALPHA_COLOR));
|
|
if ($background_color===false) {
|
|
throw new ImageTranscodeException("Could not allocate background color");
|
|
}
|
|
if (imagefilledrectangle($new_image, 0, 0, $width, $height, $background_color)===false) {
|
|
throw new ImageTranscodeException("Could not fill background color");
|
|
}
|
|
if (imagecopy($new_image, $image, 0, 0, 0, 0, $width, $height)===false) {
|
|
throw new ImageTranscodeException("Could not copy source image to new image");
|
|
}
|
|
$result = imagejpeg($new_image, $tmp_name, $q);
|
|
} finally {
|
|
imagedestroy($new_image);
|
|
}
|
|
break;
|
|
}
|
|
} finally {
|
|
imagedestroy($image);
|
|
}
|
|
if ($result===false) {
|
|
throw new ImageTranscodeException("Error while transcoding ".$source_name." to ".$target_mime);
|
|
}
|
|
return $tmp_name;
|
|
}
|
|
|
|
private function transcode_image_convert(String $source_name, String $source_mime, string $target_mime): string
|
|
{
|
|
global $config;
|
|
|
|
$q = $config->get_int(TranscodeConfig::QUALITY);
|
|
$convert = $config->get_string(MediaConfig::CONVERT_PATH);
|
|
|
|
if (empty($convert)) {
|
|
throw new ImageTranscodeException("ImageMagick path not configured");
|
|
}
|
|
$ext = Media::determine_ext($target_mime);
|
|
|
|
$args = " -background ";
|
|
|
|
if (Media::supports_alpha($target_mime)) {
|
|
$args .= "none ";
|
|
} else {
|
|
$args .= "\"".$config->get_string(TranscodeConfig::ALPHA_COLOR)."\" ";
|
|
}
|
|
$args .= " -flatten ";
|
|
|
|
switch ($target_mime) {
|
|
case MimeType::PNG:
|
|
$args .= ' -define png:compression-level=9';
|
|
break;
|
|
case MimeType::WEBP_LOSSLESS:
|
|
$args .= ' -define webp:lossless=true -quality 100 ';
|
|
break;
|
|
default:
|
|
$args .= ' -quality '.$q;
|
|
break;
|
|
}
|
|
|
|
$tmp_name = tempnam(sys_get_temp_dir(), "shimmie_transcode");
|
|
|
|
$source_type = FileExtension::get_for_mime($source_mime);
|
|
|
|
$format = '"%s" %s:"%s" %s %s:"%s" 2>&1';
|
|
$cmd = sprintf($format, $convert, $source_type, $source_name, $args, $ext, $tmp_name);
|
|
|
|
$cmd = str_replace("\"convert\"", "convert", $cmd); // quotes are only needed if the path to convert contains a space; some other times, quotes break things, see github bug #27
|
|
exec($cmd, $output, $ret);
|
|
|
|
log_debug('transcode', "Transcoding with command `$cmd`, returns $ret");
|
|
|
|
if ($ret!==0) {
|
|
throw new ImageTranscodeException("Transcoding failed with command ".$cmd.", returning ".implode("\r\n", $output));
|
|
}
|
|
|
|
return $tmp_name;
|
|
}
|
|
}
|