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Ad a own Generator and can handle with WebP and AVIF preview. #1008

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merged 2 commits into from
Nov 5, 2023
Merged

Ad a own Generator and can handle with WebP and AVIF preview. #1008

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5531898
Ad a own Generator and can handle with WebP and AVIF preview.
JanisPlayer Oct 25, 2023
0737a34
enh: refactor Classifier#getConvertedFilePath
marcelklehr Nov 5, 2023
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109 changes: 83 additions & 26 deletions lib/Classifiers/Classifier.php
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Original file line number Diff line number Diff line change
Expand Up @@ -261,54 +261,111 @@ private function getConvertedFilePath(Node $file): string {
return $path;
}

// Create a temporary file *with the correct extension*
$tmpname = $this->tempManager->getTemporaryFile('.jpg');

if (!$this->previewProvider->isAvailable($file) && !($file instanceof File)) {
return $path;
}

try {
$this->logger->debug('generating preview of ' . $file->getId() . ' with dimension '.self::TEMP_FILE_DIMENSION);
$image = $this->previewProvider->getPreview($file, self::TEMP_FILE_DIMENSION, self::TEMP_FILE_DIMENSION);

$imageType = exif_imagetype($path); //To troubleshoot console errors, GD does not support all formats.
if (0 < $imageType && $this->config->getSystemValueString('recognize.preview.gd', 'true') === 'true') {
return $this->generatePrevieWithGD($path);
} else {
if (!$this->previewProvider->isAvailable($file)) {
return $path;
}
return $this->generatePreviewWithProvider($file);
}
} catch(\Throwable $e) {
$this->logger->info('Failed to generate preview of ' . $file->getId() . ' with dimension '.self::TEMP_FILE_DIMENSION . ': ' . $e->getMessage());
$this->logger->warning('Failed to generate preview of ' . $file->getId() . ' with dimension '.self::TEMP_FILE_DIMENSION . ': ' . $e->getMessage());
return $path;
}
}

$tmpfile = fopen($tmpname, 'wb');
public function cleanUpTmpFiles():void {
$this->tempManager->clean();
}

if ($tmpfile === false) {
$this->logger->warning('Could not open tmpfile');
return $path;
}
/**
* @param File $file
* @return string
* @throws \OCA\Recognize\Exception\Exception|NotFoundException
*/
public function generatePreviewWithProvider(File $file): string {
$image = $this->previewProvider->getPreview($file, self::TEMP_FILE_DIMENSION, self::TEMP_FILE_DIMENSION);

try {
$preview = $image->read();
} catch (NotPermittedException $e) {
$this->logger->warning('Could not read preview file', ['exception' => $e]);
return $path;
throw new \OCA\Recognize\Exception\Exception('Could not read preview file', 0, $e);
}

if ($preview === false) {
$this->logger->warning('Could not open preview file');
return $path;
throw new \OCA\Recognize\Exception\Exception('Could not open preview file');
}

$this->logger->debug('Copying ' . $file->getId() . ' preview to tempfolder');
if (stream_copy_to_stream($preview, $tmpfile) === false) {
$this->logger->warning('Could not copy preview file to temp folder');
fclose($preview);
fclose($tmpfile);
return $path;
// Create a temporary file *with the correct extension*
$tmpname = $this->tempManager->getTemporaryFile('.jpg');

$tmpfile = fopen($tmpname, 'wb');

if ($tmpfile === false) {
throw new \OCA\Recognize\Exception\Exception('Could not open tmpfile');
}

$copyResult = stream_copy_to_stream($preview, $tmpfile);
fclose($preview);
fclose($tmpfile);

if ($copyResult === false) {
throw new \OCA\Recognize\Exception\Exception('Could not copy preview file to temp folder');
}

$imagetype = exif_imagetype($tmpname);

if (in_array($imagetype, [IMAGETYPE_WEBP, IMAGETYPE_AVIF, false])) { // To troubleshoot if it is a webp or avif.
$previewImage = imagecreatefromstring(file_get_contents($tmpname));
$use_gd_quality = (int)$this->config->getSystemValue('recognize.preview.quality', '100');
if (imagejpeg($previewImage, $tmpname, $use_gd_quality) === false) {
throw new \OCA\Recognize\Exception\Exception('Could not copy preview file to temp folder');
}
}

return $tmpname;
}

public function cleanUpTmpFiles():void {
$this->tempManager->clean();
/**
* @param string $path
* @return string
* @throws \OCA\Recognize\Exception\Exception
*/
public function generatePrevieWithGD(string $path): string {
$image = imagecreatefromstring(file_get_contents($path));
$width = imagesx($image);
$height = imagesy($image);

$maxWidth = self::TEMP_FILE_DIMENSION;
$maxHeight = self::TEMP_FILE_DIMENSION;

if ($width > $maxWidth || $height > $maxHeight) {
$aspectRatio = $width / $height;
if ($width > $height) {
$newWidth = $maxWidth;
$newHeight = $maxWidth / $aspectRatio;
} else {
$newHeight = $maxHeight;
$newWidth = $maxHeight * $aspectRatio;
}
$previewImage = imagescale($image, (int)$newWidth, (int)$newHeight);
} else {
return $path;
}

// Create a temporary file *with the correct extension*
$tmpname = $this->tempManager->getTemporaryFile('.jpg');

$use_gd_quality = (int)$this->config->getSystemValue('recognize.preview.quality', '100');
if (imagejpeg($previewImage, $tmpname, $use_gd_quality) === false) {
throw new \OCA\Recognize\Exception\Exception('Could not copy preview file to temp folder');
}

return $tmpname;
}
}
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