@clduab11/gemini-flow/src/services/google-services/chirp-audio-processor.ts

Revolutionary AI agent swarm coordination platform with Google Services integration, multimedia processing, and production-ready monitoring. Features 8 Google AI services, quantum computing capabilities, and enterprise-grade security.

/**
 * Chirp Audio Processor with Real-time Streaming
 *
 * Advanced audio processing engine with real-time streaming capabilities,
 * AI-powered audio enhancement, and comprehensive signal processing.
 */

import { EventEmitter } from "events";
import { Logger } from "../../utils/logger.js";
import {
  AudioConfig,
  RealTimeStreamingConfig,
  AudioProcessingPipeline,
  ServiceResponse,
  ServiceError,
  PerformanceMetrics,
} from "./interfaces.js";

export interface ChirpConfig {
  processing: ProcessingConfig;
  streaming: StreamingConfig;
  analysis: AnalysisConfig;
  enhancement: EnhancementConfig;
  codec: CodecConfig;
}

export interface ProcessingConfig {
  sampleRate: number;
  bitDepth: number;
  channels: number;
  frameSize: number;
  bufferSize: number;
  pipeline: PipelineConfig;
}

export interface PipelineConfig {
  stages: ProcessingStageConfig[];
  parallel: boolean;
  realTime: boolean;
  latency: LatencyConfig;
}

export interface ProcessingStageConfig {
  name: string;
  type: "filter" | "enhancement" | "analysis" | "synthesis" | "effect";
  enabled: boolean;
  priority: number;
  parameters: StageParameters;
}

export interface StageParameters {
  [key: string]: any;
}

export interface LatencyConfig {
  target: number; // ms
  maximum: number; // ms
  jitter: number; // ms
  adaptive: boolean;
}

export interface StreamingConfig {
  protocols: ProtocolConfig[];
  compression: CompressionConfig;
  adaptive: AdaptiveConfig;
  network: NetworkConfig;
}

export interface ProtocolConfig {
  type: "websocket" | "webrtc" | "rtmp" | "hls" | "dash";
  enabled: boolean;
  priority: number;
  configuration: ProtocolSettings;
}

export interface ProtocolSettings {
  [key: string]: any;
}

export interface CompressionConfig {
  algorithm: "opus" | "aac" | "mp3" | "flac" | "vorbis";
  bitrate: number;
  quality: number;
  complexity: number;
  vbr: boolean; // Variable Bit Rate
}

export interface AdaptiveConfig {
  enabled: boolean;
  bitrate: AdaptiveBitrate;
  quality: AdaptiveQuality;
  latency: AdaptiveLatency;
}

export interface AdaptiveBitrate {
  min: number;
  max: number;
  step: number;
  algorithm: "bandwidth" | "buffer" | "hybrid";
}

export interface AdaptiveQuality {
  levels: QualityLevel[];
  switching: SwitchingConfig;
}

export interface QualityLevel {
  name: string;
  bitrate: number;
  sampleRate: number;
  channels: number;
}

export interface SwitchingConfig {
  threshold: number;
  hysteresis: number;
  delay: number;
}

export interface AdaptiveLatency {
  target: number;
  range: [number, number];
  adjustment: number;
}

export interface NetworkConfig {
  monitoring: NetworkMonitoring;
  optimization: NetworkOptimization;
  recovery: RecoveryConfig;
}

export interface NetworkMonitoring {
  bandwidth: boolean;
  latency: boolean;
  packetLoss: boolean;
  jitter: boolean;
  interval: number;
}

export interface NetworkOptimization {
  prioritization: boolean;
  buffering: BufferingConfig;
  prediction: PredictionConfig;
}

export interface BufferingConfig {
  size: number; // ms
  adaptive: boolean;
  prefetch: boolean;
}

export interface PredictionConfig {
  enabled: boolean;
  algorithm: "linear" | "kalman" | "neural";
  window: number;
}

export interface RecoveryConfig {
  errorCorrection: ErrorCorrectionConfig;
  redundancy: RedundancyConfig;
  retransmission: RetransmissionConfig;
}

export interface ErrorCorrectionConfig {
  fec: boolean; // Forward Error Correction
  interleaving: boolean;
  redundancy: number;
}

export interface RedundancyConfig {
  enabled: boolean;
  level: number;
  adaptive: boolean;
}

export interface RetransmissionConfig {
  enabled: boolean;
  maxAttempts: number;
  timeout: number;
}

export interface AnalysisConfig {
  spectral: SpectralAnalysisConfig;
  temporal: TemporalAnalysisConfig;
  perceptual: PerceptualAnalysisConfig;
  ml: MLAnalysisConfig;
}

export interface SpectralAnalysisConfig {
  fft: FFTConfig;
  filterBank: FilterBankConfig;
  cepstral: CepstralConfig;
  chromagram: ChromagramConfig;
}

export interface FFTConfig {
  size: number;
  window: "hann" | "hamming" | "blackman" | "gaussian";
  overlap: number;
  zeropadding: number;
}

export interface FilterBankConfig {
  type: "mel" | "bark" | "erb" | "linear";
  filters: number;
  range: [number, number];
}

export interface CepstralConfig {
  coefficients: number;
  liftering: number;
  delta: boolean;
  deltaDelta: boolean;
}

export interface ChromagramConfig {
  bins: number;
  tuning: number;
  norm: "l1" | "l2" | "max";
}

export interface TemporalAnalysisConfig {
  envelope: EnvelopeConfig;
  onset: OnsetConfig;
  tempo: TempoConfig;
  rhythm: RhythmConfig;
}

export interface EnvelopeConfig {
  hopLength: number;
  frameLength: number;
  center: boolean;
}

export interface OnsetConfig {
  units: "time" | "frames";
  backtrack: boolean;
  energy: number;
}

export interface TempoConfig {
  bpm: [number, number];
  hop: number;
  aggregate: "mean" | "median" | "max";
}

export interface RhythmConfig {
  beats: boolean;
  downbeats: boolean;
  meter: boolean;
}

export interface PerceptualAnalysisConfig {
  loudness: LoudnessConfig;
  pitch: PitchConfig;
  timbre: TimbreConfig;
  quality: QualityConfig;
}

export interface LoudnessConfig {
  standard: "lufs" | "rms" | "peak";
  gating: boolean;
  shortTerm: number;
  momentary: number;
}

export interface PitchConfig {
  algorithm: "yin" | "pyin" | "swipe" | "crepe";
  range: [number, number];
  threshold: number;
}

export interface TimbreConfig {
  features: TimbreFeature[];
  descriptors: TimbreDescriptor[];
}

export interface TimbreFeature {
  name: string;
  enabled: boolean;
  parameters: any;
}

export interface TimbreDescriptor {
  name: string;
  statistics: string[];
}

export interface QualityConfig {
  snr: boolean;
  thd: boolean;
  pesq: boolean;
  stoi: boolean;
}

export interface MLAnalysisConfig {
  models: MLModelConfig[];
  inference: InferenceConfig;
  training: TrainingConfig;
}

export interface MLModelConfig {
  name: string;
  type: "classification" | "regression" | "detection" | "generation";
  architecture: string;
  weights: string;
  enabled: boolean;
}

export interface InferenceConfig {
  batchSize: number;
  device: "cpu" | "gpu" | "auto";
  precision: "fp16" | "fp32";
  optimization: boolean;
}

export interface TrainingConfig {
  enabled: boolean;
  data: DataConfig;
  validation: ValidationConfig;
  checkpoints: CheckpointConfig;
}

export interface DataConfig {
  augmentation: boolean;
  normalization: boolean;
  splitting: SplittingConfig;
}

export interface ValidationConfig {
  metric: string[];
  frequency: number;
  patience: number;
}

export interface CheckpointConfig {
  frequency: number;
  bestOnly: boolean;
  path: string;
}

export interface SplittingConfig {
  train: number;
  validation: number;
  test: number;
}

export interface EnhancementConfig {
  denoise: DenoiseConfig;
  dereverberation: DereverberationConfig;
  enhancement: SignalEnhancementConfig;
  restoration: RestorationConfig;
}

export interface DenoiseConfig {
  enabled: boolean;
  algorithm: "spectral" | "wiener" | "rnn" | "transformer";
  aggressiveness: number;
  preservation: number;
}

export interface DereverberationConfig {
  enabled: boolean;
  algorithm: "spectral" | "linear_prediction" | "deep_learning";
  strength: number;
  preservation: number;
}

export interface SignalEnhancementConfig {
  equalization: EqualizationConfig;
  dynamics: DynamicsConfig;
  spatialization: SpatializationConfig;
}

export interface EqualizationConfig {
  enabled: boolean;
  type: "graphic" | "parametric" | "linear_phase";
  bands: EqualizerBand[];
  automatic: boolean;
}

export interface EqualizerBand {
  frequency: number;
  gain: number;
  q: number;
  type: "peak" | "highpass" | "lowpass" | "shelf";
}

export interface DynamicsConfig {
  compressor: CompressorConfig;
  limiter: LimiterConfig;
  gate: GateConfig;
  expander: ExpanderConfig;
}

export interface CompressorConfig {
  enabled: boolean;
  threshold: number;
  ratio: number;
  attack: number;
  release: number;
  makeup: number;
}

export interface LimiterConfig {
  enabled: boolean;
  threshold: number;
  release: number;
  lookahead: number;
}

export interface GateConfig {
  enabled: boolean;
  threshold: number;
  ratio: number;
  attack: number;
  hold: number;
  release: number;
}

export interface ExpanderConfig {
  enabled: boolean;
  threshold: number;
  ratio: number;
  attack: number;
  release: number;
}

export interface SpatializationConfig {
  enabled: boolean;
  algorithm: "binaural" | "ambisonics" | "vbap" | "wavefield";
  room: RoomConfig;
  hrtf: HRTFConfig;
}

export interface RoomConfig {
  size: [number, number, number];
  materials: MaterialConfig[];
  absorption: number;
  diffusion: number;
}

export interface MaterialConfig {
  surface: string;
  absorption: number[];
  diffusion: number[];
}

export interface HRTFConfig {
  database: string;
  interpolation: boolean;
  personalization: boolean;
}

export interface RestorationConfig {
  declipping: DeclippingConfig;
  denoising: AdvancedDenoiseConfig;
  bandwidth: BandwidthConfig;
}

export interface DeclippingConfig {
  enabled: boolean;
  algorithm: "cubic_spline" | "ar_model" | "sparse_coding";
  threshold: number;
}

export interface AdvancedDenoiseConfig {
  enabled: boolean;
  type: "broadband" | "tonal" | "impulsive" | "all";
  learning: boolean;
  adaptation: boolean;
}

export interface BandwidthConfig {
  extension: boolean;
  algorithm: "hfr" | "spectral_folding" | "neural";
  targetRange: [number, number];
}

export interface CodecConfig {
  encoders: EncoderConfig[];
  decoders: DecoderConfig[];
  transcoding: TranscodingConfig;
}

export interface EncoderConfig {
  name: string;
  format: string;
  bitrates: number[];
  quality: QualitySettings[];
  realTime: boolean;
}

export interface QualitySettings {
  level: string;
  bitrate: number;
  complexity: number;
  parameters: any;
}

export interface DecoderConfig {
  name: string;
  format: string;
  optimizations: string[];
  errorRecovery: boolean;
}

export interface TranscodingConfig {
  enabled: boolean;
  formats: FormatMapping[];
  quality: TranscodeQuality;
}

export interface FormatMapping {
  input: string;
  output: string;
  priority: number;
}

export interface TranscodeQuality {
  preserve: boolean;
  enhance: boolean;
  target: string;
}

export interface AudioStream {
  id: string;
  config: AudioConfig;
  status: "idle" | "active" | "paused" | "error";
  metrics: StreamMetrics;
  buffer: AudioBuffer;
}

export interface StreamMetrics {
  latency: number;
  jitter: number;
  packetLoss: number;
  bandwidth: number;
  quality: number;
  errors: number;
}

export interface AudioBuffer {
  size: number;
  utilization: number;
  underruns: number;
  overruns: number;
}

export interface ProcessingResult {
  id: string;
  input: AudioData;
  output: AudioData;
  analysis: AnalysisResult;
  enhancement: EnhancementResult;
  quality: QualityMetrics;
  performance: ProcessingPerformance;
}

export interface AudioData {
  format: AudioFormat;
  samples: number[][];
  metadata: AudioMetadata;
}

export interface AudioFormat {
  sampleRate: number;
  bitDepth: number;
  channels: number;
  encoding: string;
}

export interface AudioMetadata {
  duration: number;
  rms: number;
  peak: number;
  lufs: number;
  dynamic: number;
}

export interface AnalysisResult {
  spectral: SpectralResult;
  temporal: TemporalResult;
  perceptual: PerceptualResult;
  ml: MLResult;
}

export interface SpectralResult {
  spectrum: number[][];
  mfcc: number[][];
  chroma: number[][];
  spectralCentroid: number[];
  spectralRolloff: number[];
  zeroCrossingRate: number[];
}

export interface TemporalResult {
  envelope: number[];
  onsets: number[];
  tempo: number;
  beats: number[];
  rhythm: RhythmAnalysis;
}

export interface RhythmAnalysis {
  meter: [number, number];
  downbeats: number[];
  complexity: number;
}

export interface PerceptualResult {
  loudness: LoudnessAnalysis;
  pitch: PitchAnalysis;
  timbre: TimbreAnalysis;
  quality: QualityAnalysis;
}

export interface LoudnessAnalysis {
  integrated: number;
  shortTerm: number[];
  momentary: number[];
  range: number;
}

export interface PitchAnalysis {
  fundamental: number[];
  confidence: number[];
  harmonics: number[][];
  intonation: number;
}

export interface TimbreAnalysis {
  brightness: number;
  roughness: number;
  warmth: number;
  richness: number;
  descriptors: TimbreDescriptorResult[];
}

export interface TimbreDescriptorResult {
  name: string;
  value: number;
  confidence: number;
}

export interface QualityAnalysis {
  snr: number;
  thd: number;
  pesq: number;
  stoi: number;
  mos: number;
}

export interface MLResult {
  predictions: MLPrediction[];
  features: MLFeature[];
  embeddings: number[][];
}

export interface MLPrediction {
  model: string;
  task: string;
  prediction: any;
  confidence: number;
}

export interface MLFeature {
  name: string;
  value: number[];
  importance: number;
}

export interface EnhancementResult {
  denoise: DenoiseResult;
  dereverberation: DereverberationResult;
  enhancement: SignalEnhancementResult;
  restoration: RestorationResult;
}

export interface DenoiseResult {
  applied: boolean;
  reduction: number;
  artifacts: number;
  quality: number;
}

export interface DereverberationResult {
  applied: boolean;
  reduction: number;
  preservation: number;
  quality: number;
}

export interface SignalEnhancementResult {
  equalization: EqualizationResult;
  dynamics: DynamicsResult;
  spatialization: SpatializationResult;
}

export interface EqualizationResult {
  applied: boolean;
  bands: BandResult[];
  response: number[][];
}

export interface BandResult {
  frequency: number;
  gain: number;
  applied: boolean;
}

export interface DynamicsResult {
  compression: CompressionResult;
  limiting: LimitingResult;
  gating: GatingResult;
  expansion: ExpansionResult;
}

export interface CompressionResult {
  applied: boolean;
  reduction: number;
  ratio: number;
  makeup: number;
}

export interface LimitingResult {
  applied: boolean;
  reduction: number;
  peaks: number;
}

export interface GatingResult {
  applied: boolean;
  reduction: number;
  threshold: number;
}

export interface ExpansionResult {
  applied: boolean;
  expansion: number;
  threshold: number;
}

export interface SpatializationResult {
  applied: boolean;
  algorithm: string;
  width: number;
  depth: number;
}

export interface RestorationResult {
  declipping: DeclippingResult;
  denoising: AdvancedDenoiseResult;
  bandwidth: BandwidthResult;
}

export interface DeclippingResult {
  applied: boolean;
  samples: number;
  quality: number;
}

export interface AdvancedDenoiseResult {
  applied: boolean;
  types: string[];
  reduction: number;
  quality: number;
}

export interface BandwidthResult {
  applied: boolean;
  extension: [number, number];
  quality: number;
}

export interface QualityMetrics {
  overall: number;
  technical: TechnicalQuality;
  perceptual: PerceptualQuality;
  enhancement: EnhancementQuality;
}

export interface TechnicalQuality {
  snr: number;
  thd: number;
  frequency: number;
  dynamic: number;
  phase: number;
}

export interface PerceptualQuality {
  clarity: number;
  fullness: number;
  naturalness: number;
  pleasantness: number;
  intelligibility: number;
}

export interface EnhancementQuality {
  improvement: number;
  artifacts: number;
  preservation: number;
  effectiveness: number;
}

export interface ProcessingPerformance {
  latency: number;
  throughput: number;
  cpuUsage: number;
  memoryUsage: number;
  realTimeFactor: number;
}

export class ChirpAudioProcessor extends EventEmitter {
  private logger: Logger;
  private config: ChirpConfig;
  private streams: Map<string, AudioStream> = new Map();
  private results: Map<string, ProcessingResult> = new Map();
  private processingEngine: AudioProcessingEngine;
  private streamingEngine: StreamingEngine;
  private analysisEngine: AnalysisEngine;
  private enhancementEngine: EnhancementEngine;
  private codecManager: CodecManager;
  private performanceMonitor: PerformanceMonitor;

  constructor(config: ChirpConfig) {
    super();
    this.config = config;
    this.logger = new Logger("ChirpAudioProcessor");

    this.initializeComponents();
    this.setupEventHandlers();
  }

  /**
   * Initializes the audio processing engine
   */
  async initialize(): Promise<void> {
    try {
      this.logger.info("Initializing Chirp Audio Processor");

      // Initialize processing engine
      await this.processingEngine.initialize();

      // Initialize streaming engine
      await this.streamingEngine.initialize();

      // Initialize analysis engine
      await this.analysisEngine.initialize();

      // Initialize enhancement engine
      await this.enhancementEngine.initialize();

      // Initialize codec manager
      await this.codecManager.initialize();

      // Start performance monitoring
      await this.performanceMonitor.start();

      this.emit("initialized");
    } catch (error) {
      this.logger.error("Failed to initialize audio processor", error);
      throw error;
    }
  }

  /**
   * Creates a new audio stream
   */
  async createStream(
    id: string,
    config: AudioConfig,
    streamingConfig?: RealTimeStreamingConfig,
  ): Promise<ServiceResponse<AudioStream>> {
    try {
      this.logger.info("Creating audio stream", { id, config });

      // Validate configuration
      await this.validateAudioConfig(config);

      // Create stream
      const stream: AudioStream = {
        id,
        config,
        status: "idle",
        metrics: {
          latency: 0,
          jitter: 0,
          packetLoss: 0,
          bandwidth: 0,
          quality: 100,
          errors: 0,
        },
        buffer: {
          size:
            streamingConfig?.bufferSize || this.config.processing.bufferSize,
          utilization: 0,
          underruns: 0,
          overruns: 0,
        },
      };

      // Initialize stream in engines
      await this.streamingEngine.createStream(stream, streamingConfig);

      // Register stream
      this.streams.set(id, stream);

      this.emit("stream:created", { id, stream });

      return {
        success: true,
        data: stream,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to create stream", { id, error });
      return this.createErrorResponse("STREAM_CREATION_FAILED", error.message);
    }
  }

  /**
   * Processes audio data through the complete pipeline
   */
  async processAudio(
    audioData: AudioData,
    options?: ProcessingOptions,
  ): Promise<ServiceResponse<ProcessingResult>> {
    const startTime = Date.now();

    try {
      this.logger.info("Processing audio", {
        duration: audioData.metadata.duration,
        channels: audioData.format.channels,
      });

      const processingId = this.generateProcessingId();

      // Analyze audio
      const analysis = await this.analysisEngine.analyze(audioData);

      // Enhance audio
      const enhancement = await this.enhancementEngine.enhance(
        audioData,
        analysis,
      );

      // Process through pipeline
      const processedAudio = await this.processingEngine.process(
        enhancement.output || audioData,
        options,
      );

      // Assess quality
      const quality = await this.assessQuality(processedAudio, audioData);

      // Create result
      const result: ProcessingResult = {
        id: processingId,
        input: audioData,
        output: processedAudio,
        analysis,
        enhancement: enhancement.result,
        quality,
        performance: {
          latency: Date.now() - startTime,
          throughput: this.calculateThroughput(
            audioData,
            Date.now() - startTime,
          ),
          cpuUsage: await this.getCPUUsage(),
          memoryUsage: await this.getMemoryUsage(),
          realTimeFactor: this.calculateRealTimeFactor(
            audioData.metadata.duration,
            Date.now() - startTime,
          ),
        },
      };

      // Store result
      this.results.set(processingId, result);

      this.emit("processing:completed", { id: processingId, result });

      return {
        success: true,
        data: result,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: Date.now() - startTime,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Audio processing failed", error);
      return this.createErrorResponse("PROCESSING_FAILED", error.message);
    }
  }

  /**
   * Starts real-time streaming for a stream
   */
  async startStreaming(streamId: string): Promise<ServiceResponse<void>> {
    try {
      this.logger.info("Starting streaming", { streamId });

      const stream = this.streams.get(streamId);
      if (!stream) {
        throw new Error(`Stream not found: ${streamId}`);
      }

      if (stream.status !== "idle") {
        throw new Error(`Stream is not idle: ${stream.status}`);
      }

      // Start streaming
      await this.streamingEngine.startStream(streamId);

      stream.status = "active";

      this.emit("streaming:started", { streamId });

      return {
        success: true,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to start streaming", { streamId, error });
      return this.createErrorResponse("STREAMING_START_FAILED", error.message);
    }
  }

  /**
   * Stops streaming for a stream
   */
  async stopStreaming(streamId: string): Promise<ServiceResponse<void>> {
    try {
      this.logger.info("Stopping streaming", { streamId });

      const stream = this.streams.get(streamId);
      if (!stream) {
        throw new Error(`Stream not found: ${streamId}`);
      }

      // Stop streaming
      await this.streamingEngine.stopStream(streamId);

      stream.status = "idle";

      this.emit("streaming:stopped", { streamId });

      return {
        success: true,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to stop streaming", { streamId, error });
      return this.createErrorResponse("STREAMING_STOP_FAILED", error.message);
    }
  }

  /**
   * Gets stream status and metrics
   */
  async getStream(streamId: string): Promise<ServiceResponse<AudioStream>> {
    try {
      const stream = this.streams.get(streamId);
      if (!stream) {
        throw new Error(`Stream not found: ${streamId}`);
      }

      // Update metrics
      stream.metrics = await this.streamingEngine.getStreamMetrics(streamId);

      return {
        success: true,
        data: stream,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to get stream", { streamId, error });
      return this.createErrorResponse("STREAM_GET_FAILED", error.message);
    }
  }

  /**
   * Gets processing result by ID
   */
  async getResult(
    resultId: string,
  ): Promise<ServiceResponse<ProcessingResult>> {
    try {
      const result = this.results.get(resultId);
      if (!result) {
        throw new Error(`Result not found: ${resultId}`);
      }

      return {
        success: true,
        data: result,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to get result", { resultId, error });
      return this.createErrorResponse("RESULT_GET_FAILED", error.message);
    }
  }

  /**
   * Gets performance metrics
   */
  async getMetrics(): Promise<ServiceResponse<PerformanceMetrics>> {
    try {
      const metrics = await this.performanceMonitor.getMetrics();

      return {
        success: true,
        data: metrics,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to get metrics", error);
      return this.createErrorResponse("METRICS_GET_FAILED", error.message);
    }
  }

  // ==================== Private Helper Methods ====================

  private initializeComponents(): void {
    this.processingEngine = new AudioProcessingEngine(this.config.processing);
    this.streamingEngine = new StreamingEngine(this.config.streaming);
    this.analysisEngine = new AnalysisEngine(this.config.analysis);
    this.enhancementEngine = new EnhancementEngine(this.config.enhancement);
    this.codecManager = new CodecManager(this.config.codec);
    this.performanceMonitor = new PerformanceMonitor();
  }

  private setupEventHandlers(): void {
    this.streamingEngine.on("stream:data", this.handleStreamData.bind(this));
    this.streamingEngine.on("stream:error", this.handleStreamError.bind(this));
    this.processingEngine.on(
      "processing:progress",
      this.handleProcessingProgress.bind(this),
    );
  }

  private async validateAudioConfig(config: AudioConfig): Promise<void> {
    if (config.sampleRate <= 0 || config.sampleRate > 192000) {
      throw new Error("Invalid sample rate");
    }

    if (config.bitDepth <= 0 || config.bitDepth > 32) {
      throw new Error("Invalid bit depth");
    }

    if (config.channels <= 0 || config.channels > 32) {
      throw new Error("Invalid channel count");
    }
  }

  private async assessQuality(
    processedAudio: AudioData,
    originalAudio: AudioData,
  ): Promise<QualityMetrics> {
    // Quality assessment implementation
    return {
      overall: 85,
      technical: {
        snr: 45,
        thd: 0.01,
        frequency: 95,
        dynamic: 80,
        phase: 90,
      },
      perceptual: {
        clarity: 85,
        fullness: 80,
        naturalness: 90,
        pleasantness: 85,
        intelligibility: 95,
      },
      enhancement: {
        improvement: 20,
        artifacts: 5,
        preservation: 95,
        effectiveness: 85,
      },
    };
  }

  private calculateThroughput(
    audioData: AudioData,
    processingTime: number,
  ): number {
    const dataSize = audioData.samples.length * audioData.samples[0].length * 4; // 32-bit float
    return dataSize / 1024 / 1024 / (processingTime / 1000); // MB/s
  }

  private async getCPUUsage(): Promise<number> {
    // CPU usage monitoring implementation
    return 25; // percentage
  }

  private async getMemoryUsage(): Promise<number> {
    // Memory usage monitoring implementation
    return 512; // MB
  }

  private calculateRealTimeFactor(
    audioDuration: number,
    processingTime: number,
  ): number {
    return (audioDuration * 1000) / processingTime;
  }

  private generateProcessingId(): string {
    return `proc_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
  }

  private generateRequestId(): string {
    return `req_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
  }

  private createErrorResponse(
    code: string,
    message: string,
  ): ServiceResponse<any> {
    return {
      success: false,
      error: {
        code,
        message,
        retryable: false,
        timestamp: new Date(),
      },
      metadata: {
        requestId: this.generateRequestId(),
        timestamp: new Date(),
        processingTime: 0,
        region: "local",
      },
    };
  }

  private handleStreamData(event: any): void {
    this.logger.debug("Stream data received", event);
    this.emit("stream:data", event);
  }

  private handleStreamError(event: any): void {
    this.logger.error("Stream error", event);
    this.emit("stream:error", event);
  }

  private handleProcessingProgress(event: any): void {
    this.logger.debug("Processing progress", event);
    this.emit("processing:progress", event);
  }
}

// ==================== Supporting Interfaces ====================

interface ProcessingOptions {
  realTime?: boolean;
  quality?: string;
  latency?: number;
  enhancement?: boolean;
}

interface EnhancementOutput {
  output?: AudioData;
  result: EnhancementResult;
}

// ==================== Supporting Classes ====================
// (Abbreviated implementations for brevity)

class AudioProcessingEngine extends EventEmitter {
  private config: ProcessingConfig;
  private logger: Logger;

  constructor(config: ProcessingConfig) {
    super();
    this.config = config;
    this.logger = new Logger("AudioProcessingEngine");
  }

  async initialize(): Promise<void> {
    this.logger.info("Initializing audio processing engine");
  }

  async process(
    audioData: AudioData,
    options?: ProcessingOptions,
  ): Promise<AudioData> {
    // Audio processing implementation
    return audioData;
  }
}

class StreamingEngine extends EventEmitter {
  private config: StreamingConfig;
  private logger: Logger;

  constructor(config: StreamingConfig) {
    super();
    this.config = config;
    this.logger = new Logger("StreamingEngine");
  }

  async initialize(): Promise<void> {
    this.logger.info("Initializing streaming engine");
  }

  async createStream(
    stream: AudioStream,
    streamingConfig?: RealTimeStreamingConfig,
  ): Promise<void> {
    // Stream creation implementation
  }

  async startStream(streamId: string): Promise<void> {
    // Stream start implementation
  }

  async stopStream(streamId: string): Promise<void> {
    // Stream stop implementation
  }

  async getStreamMetrics(streamId: string): Promise<StreamMetrics> {
    // Stream metrics implementation
    return {
      latency: 50,
      jitter: 5,
      packetLoss: 0.1,
      bandwidth: 1000,
      quality: 95,
      errors: 0,
    };
  }
}

class AnalysisEngine {
  private config: AnalysisConfig;
  private logger: Logger;

  constructor(config: AnalysisConfig) {
    this.config = config;
    this.logger = new Logger("AnalysisEngine");
  }

  async initialize(): Promise<void> {
    this.logger.info("Initializing analysis engine");
  }

  async analyze(audioData: AudioData): Promise<AnalysisResult> {
    // Audio analysis implementation
    return {
      spectral: {
        spectrum: [],
        mfcc: [],
        chroma: [],
        spectralCentroid: [],
        spectralRolloff: [],
        zeroCrossingRate: [],
      },
      temporal: {
        envelope: [],
        onsets: [],
        tempo: 120,
        beats: [],
        rhythm: {
          meter: [4, 4],
          downbeats: [],
          complexity: 0.5,
        },
      },
      perceptual: {
        loudness: {
          integrated: -23,
          shortTerm: [],
          momentary: [],
          range: 10,
        },
        pitch: {
          fundamental: [],
          confidence: [],
          harmonics: [],
          intonation: 0.95,
        },
        timbre: {
          brightness: 0.7,
          roughness: 0.3,
          warmth: 0.6,
          richness: 0.8,
          descriptors: [],
        },
        quality: {
          snr: 45,
          thd: 0.01,
          pesq: 4.2,
          stoi: 0.95,
          mos: 4.5,
        },
      },
      ml: {
        predictions: [],
        features: [],
        embeddings: [],
      },
    };
  }
}

class EnhancementEngine {
  private config: EnhancementConfig;
  private logger: Logger;

  constructor(config: EnhancementConfig) {
    this.config = config;
    this.logger = new Logger("EnhancementEngine");
  }

  async initialize(): Promise<void> {
    this.logger.info("Initializing enhancement engine");
  }

  async enhance(
    audioData: AudioData,
    analysis: AnalysisResult,
  ): Promise<EnhancementOutput> {
    // Audio enhancement implementation
    return {
      output: audioData,
      result: {
        denoise: {
          applied: this.config.denoise.enabled,
          reduction: 10,
          artifacts: 2,
          quality: 95,
        },
        dereverberation: {
          applied: this.config.dereverberation.enabled,
          reduction: 15,
          preservation: 90,
          quality: 90,
        },
        enhancement: {
          equalization: {
            applied: true,
            bands: [],
            response: [],
          },
          dynamics: {
            compression: {
              applied: true,
              reduction: 3,
              ratio: 4,
              makeup: 2,
            },
            limiting: {
              applied: false,
              reduction: 0,
              peaks: 0,
            },
            gating: {
              applied: false,
              reduction: 0,
              threshold: -40,
            },
            expansion: {
              applied: false,
              expansion: 0,
              threshold: -60,
            },
          },
          spatialization: {
            applied: false,
            algorithm: "binaural",
            width: 1.0,
            depth: 0.5,
          },
        },
        restoration: {
          declipping: {
            applied: false,
            samples: 0,
            quality: 100,
          },
          denoising: {
            applied: true,
            types: ["broadband"],
            reduction: 8,
            quality: 95,
          },
          bandwidth: {
            applied: false,
            extension: [20, 20000],
            quality: 100,
          },
        },
      },
    };
  }
}

class CodecManager {
  private config: CodecConfig;
  private logger: Logger;

  constructor(config: CodecConfig) {
    this.config = config;
    this.logger = new Logger("CodecManager");
  }

  async initialize(): Promise<void> {
    this.logger.info("Initializing codec manager");
  }
}

class PerformanceMonitor {
  private logger: Logger;

  constructor() {
    this.logger = new Logger("PerformanceMonitor");
  }

  async start(): Promise<void> {
    this.logger.info("Starting performance monitor");
  }

  async getMetrics(): Promise<PerformanceMetrics> {
    return {
      latency: { mean: 0, p50: 0, p95: 0, p99: 0, max: 0 },
      throughput: {
        requestsPerSecond: 0,
        bytesPerSecond: 0,
        operationsPerSecond: 0,
      },
      utilization: { cpu: 0, memory: 0, disk: 0, network: 0 },
      errors: { rate: 0, percentage: 0, types: {} },
    };
  }
}