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<?php |
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namespace Meema\MediaRecognition\Recognizers; |
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use Aws\Rekognition\RekognitionClient; |
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use Exception; |
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use Meema\MediaRecognition\Contracts\MediaRecognition as MediaRecognitionInterface; |
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use Meema\MediaRecognition\Models\MediaRecognition; |
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use Meema\MediaRecognition\Traits\InteractsWithStorage; |
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class Rekognition implements MediaRecognitionInterface |
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{ |
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use InteractsWithStorage; |
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/** |
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* Client instance of MediaRecognition. |
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* |
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* @var \Aws\Rekognition\RekognitionClient |
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*/ |
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protected RekognitionClient $client; |
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/** |
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* The settings provided to the Rekognition job. |
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* |
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* @var array |
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*/ |
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protected array $settings; |
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/** |
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* The input image as base64-encoded bytes. |
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* |
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* @var string |
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*/ |
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protected string $blob; |
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/** |
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* Construct converter. |
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* |
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* @param \Aws\Rekognition\RekognitionClient $client |
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*/ |
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public function __construct(RekognitionClient $client) |
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{ |
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$this->client = $client; |
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} |
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/** |
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* Get the MediaRecognition Client. |
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* |
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* @return \Aws\Rekognition\RekognitionClient |
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*/ |
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public function getClient(): RekognitionClient |
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{ |
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return $this->client; |
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} |
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/** |
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* Set the base64 encoded image. |
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* |
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* @param string $blob |
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* |
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* @return $this |
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*/ |
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public function blob(string $blob) |
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{ |
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$this->blob = $blob; |
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return $this; |
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} |
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/** |
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* Detects labels/objects in an image. |
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* |
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* @param int|null $mediaId |
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* @param int|null $minConfidence |
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* @param int|null $maxLabels |
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* @return \Aws\Result |
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* @throws \Exception |
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*/ |
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public function detectLabels($mediaId = null, int $minConfidence = null, int $maxLabels = null) |
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{ |
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$settings = $this->setImage(); |
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$settings['MinConfidence'] = $minConfidence ?? config('media-recognition.min_confidence'); |
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if (is_int($maxLabels)) { |
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$settings['MaxLabels'] = $maxLabels; |
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} |
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$results = $this->client->detectLabels($settings); |
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if (! config('media-recognition.track_media_recognitions')) { |
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return $results; |
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} |
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if (is_null($mediaId)) { |
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throw new Exception('Please make sure to set a $mediaId.'); |
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} |
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MediaRecognition::create($results, $mediaId); |
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return $results; |
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} |
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/** |
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* Sets the image to be analyzed. |
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* |
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* @return array |
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* @throws \Exception |
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*/ |
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protected function setImage(): array |
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{ |
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if (is_string($this->blob)) { |
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$settings['Image'] = [ |
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'Bytes' => $this->blob, |
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]; |
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return $settings; |
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} |
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$disk = $this->disk ?? config('media-recognition.disk'); |
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$bucketName = config("filesystems.disks.$disk.bucket"); |
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if (! $bucketName) { |
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throw new Exception('Please make sure to set a S3 bucket name.'); |
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} |
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$settings['Image'] = [ |
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'S3Object' => [ |
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'Bucket' => $bucketName, |
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'Name' => $this->path, |
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], |
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]; |
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return $settings; |
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} |
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/** |
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* Detects labels/objects in an image. |
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*/ |
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public function detectFaces() |
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{ |
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//return $this->client->detectLabels([ |
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//'NotificationChannel' => [ |
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// "RoleArn" => config('media-recognition.iam_arn'), |
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// "SNSTopicArn" => config('media-recognition.sns_topic_arn'), |
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//], |
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// 'Image' => [ |
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// 'S3Object' => [ |
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// 'Bucket' => 'meema-stage', |
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// 'Name' => 'test-media/people.jpg', |
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// ], |
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// ], |
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//]); |
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} |
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/** |
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* Detects text in an image (OCR). |
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*/ |
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public function detectText($minConfidence = 50) |
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{ |
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$bytes = ''; |
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$results = $this->client->detectText([ |
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'Image' => ['Bytes' => $bytes], |
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'MinConfidence' => $minConfidence, |
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])['TextDetections']; |
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} |
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} |
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