MCP Audio Tweaker

import { z } from 'zod'; // File path validation export const FilePathSchema = z.string().min(1).refine( (path) => { const supportedExtensions = ['.mp3', '.wav', '.ogg', '.flac', '.m4a', '.aac']; return supportedExtensions.some(ext => path.toLowerCase().endsWith(ext)); }, { message: "File must be a supported audio format (.mp3, .wav, .ogg, .flac, .m4a, .aac)" } ); // Volume operation schema export const VolumeOperationSchema = z.object({ adjust: z.number().min(-60).max(20).optional(), normalize: z.boolean().default(false).optional(), targetLUFS: z.number().default(-23).optional() }); // Format operation schema export const FormatOperationSchema = z.object({ sampleRate: z.union([ z.literal(8000), z.literal(16000), z.literal(22050), z.literal(44100), z.literal(48000), z.literal(96000), z.literal(192000) ]).optional(), bitrate: z.number().min(64).max(320).optional(), channels: z.union([ z.literal(1), z.literal(2), z.literal(6), z.literal(8) ]).optional(), codec: z.enum(['pcm', 'mp3', 'aac', 'vorbis', 'flac']).optional() }); // Effects operation schema export const EffectsOperationSchema = z.object({ fadeIn: z.number().min(0).optional(), fadeOut: z.number().min(0).optional(), trim: z.object({ start: z.number().min(0), end: z.number().min(0) }).optional(), loop: z.object({ enabled: z.boolean(), count: z.number().min(1) }).optional() }); // Complete operations schema export const AudioOperationsSchema = z.object({ volume: VolumeOperationSchema.optional(), format: FormatOperationSchema.optional(), effects: EffectsOperationSchema.optional() }); // Input schema export const ProcessingInputSchema = z.object({ file: z.string().optional(), directory: z.string().optional(), pattern: z.string().optional() }).refine( (data) => data.file || data.directory, { message: "Either 'file' or 'directory' must be provided" } ); // Output schema export const ProcessingOutputSchema = z.object({ file: z.string().optional(), directory: z.string().optional(), suffix: z.string().default('_processed').optional(), format: z.enum(['wav', 'mp3', 'ogg', 'flac', 'aac', 'm4a']).optional() }); // Presets schema export const ProcessingPresetsSchema = z.object({ gameAudio: z.enum(['mobile', 'desktop', 'console', 'web']).optional(), quality: z.enum(['draft', 'preview', 'production', 'mastered']).optional() }); // Complete processing parameters schema export const AudioProcessingParametersSchema = z.object({ input: ProcessingInputSchema, output: ProcessingOutputSchema, operations: AudioOperationsSchema.optional(), presets: ProcessingPresetsSchema.optional() }); // Preset name schema export const PresetNameSchema = z.enum([ 'game-audio-mobile', 'game-audio-desktop', 'game-audio-console', 'elevenLabs-optimize', 'voice-processing', 'music-mastering', 'sfx-optimization', 'deep-mechanical', 'bright-crystalline', 'variation-pack', 'layered-impact', 'space-ambient', 'punchy-game-sfx' ]); // Tool input schemas for MCP export const ProcessAudioFileInputSchema = z.object({ inputFile: FilePathSchema, outputFile: z.string().min(1), operations: AudioOperationsSchema }).transform((data) => { // Transform string values to numbers for format operations if (data.operations.format) { if (data.operations.format.sampleRate && typeof data.operations.format.sampleRate === 'string') { data.operations.format.sampleRate = parseInt(data.operations.format.sampleRate) as any; } if (data.operations.format.channels && typeof data.operations.format.channels === 'string') { data.operations.format.channels = parseInt(data.operations.format.channels) as any; } } return data; }); export const BatchProcessAudioInputSchema = z.object({ inputDirectory: z.string().min(1), outputDirectory: z.string().min(1), filePattern: z.string().default('*.{mp3,wav,ogg,flac,m4a,aac}').optional(), operations: AudioOperationsSchema }).transform((data) => { // Transform string values to numbers for format operations if (data.operations.format) { if (data.operations.format.sampleRate && typeof data.operations.format.sampleRate === 'string') { data.operations.format.sampleRate = parseInt(data.operations.format.sampleRate) as any; } if (data.operations.format.channels && typeof data.operations.format.channels === 'string') { data.operations.format.channels = parseInt(data.operations.format.channels) as any; } } return data; }); export const ApplyPresetInputSchema = z.object({ inputFile: FilePathSchema, outputFile: z.string().min(1), preset: PresetNameSchema }); // Validation helper functions export function validateFilePath(path: string): boolean { try { FilePathSchema.parse(path); return true; } catch { return false; } } export function validateAudioOperations(operations: unknown): boolean { try { AudioOperationsSchema.parse(operations); return true; } catch { return false; } } export function validateProcessingParameters(params: unknown): boolean { try { AudioProcessingParametersSchema.parse(params); return true; } catch { return false; } }