watermark the audio directly

Signed-off-by: Julien Veyssier <julien-nc@posteo.net>

Author: julien-nc

lib/Service/WatermarkingService.php

@@ -123,7 +123,7 @@ public function markAudio(string $audio): string {
 
 			return $newAudio;
 		} catch (\Throwable $e) {
-			$this->logger->warning('Could not add AI watermark to AI generated image', ['exception' => $e]);
+			$this->logger->warning('Could not add AI watermark to AI generated audio', ['exception' => $e]);
 			return $audio;
 		}
 	}

lib/TaskProcessing/AudioToAudioTranslateProvider.php

@@ -255,7 +255,7 @@ public function process(
 				$this->logger->warning('Text to speech generation failed: no speech returned');
 				throw new ProcessingException('Text to speech generation failed: no speech returned');
 			}
-			$translatedAudio = $apiResponse['body'];
+			$translatedAudio = $includeWatermark ? $this->watermarkingService->markAudio($apiResponse['body']) : $apiResponse['body'];
 		} catch (\Exception $e) {
 			$this->logger->warning('Text to speech generation failed with: ' . $e->getMessage(), ['exception' => $e]);
 			throw new ProcessingException(