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// audio-stream.service.ts güncelleme
// Linear16 format desteği eklenmiş hali
import { Injectable, OnDestroy } from '@angular/core';
import { Subject, Observable, throwError } from 'rxjs';
export interface AudioChunk {
data: string; // Base64 encoded audio
timestamp: number;
}
export interface AudioStreamError {
type: 'permission' | 'device' | 'browser' | 'unknown';
message: string;
originalError?: any;
}
@Injectable({
providedIn: 'root'
})
export class AudioStreamService implements OnDestroy {
private mediaRecorder: MediaRecorder | null = null;
private audioStream: MediaStream | null = null;
private audioChunkSubject = new Subject<AudioChunk>();
private recordingStateSubject = new Subject<boolean>();
private errorSubject = new Subject<AudioStreamError>();
private volumeLevelSubject = new Subject<number>();
public audioChunk$ = this.audioChunkSubject.asObservable();
public recordingState$ = this.recordingStateSubject.asObservable();
public error$ = this.errorSubject.asObservable();
public volumeLevel$ = this.volumeLevelSubject.asObservable();
// Audio analysis
private audioContext: AudioContext | null = null;
private analyser: AnalyserNode | null = null;
private volumeInterval: any;
// Linear16 conversion için eklemeler
private scriptProcessor: ScriptProcessorNode | null = null;
private source: MediaStreamAudioSourceNode | null = null;
private useLinear16 = true; // Linear16 kullanım flag'i
// Audio constraints
private constraints = {
audio: {
channelCount: 1,
sampleRate: 16000,
echoCancellation: true,
noiseSuppression: true,
autoGainControl: true,
// ✅ Mikrofon kazancını artır
googAutoGainControl: true,
googAutoGainControl2: true,
googEchoCancellation: true,
googNoiseSuppression: true,
googHighpassFilter: false,
googTypingNoiseDetection: false
}
};
ngOnDestroy(): void {
this.cleanup();
}
static checkBrowserSupport(): boolean {
return !!(
navigator.mediaDevices &&
typeof navigator.mediaDevices.getUserMedia === 'function' &&
(window.MediaRecorder || window.AudioContext)
);
}
async startRecording(): Promise<void> {
try {
console.log('🎤 [AudioStream] startRecording called', {
isAlreadyRecording: this.isRecording(),
useLinear16: this.useLinear16,
timestamp: new Date().toISOString()
});
if ((this.mediaRecorder && this.mediaRecorder.state !== 'inactive') || this.scriptProcessor) {
console.warn('Recording already in progress');
return;
}
// Check browser support
if (!AudioStreamService.checkBrowserSupport()) {
const error = this.createError('browser', 'Browser does not support audio recording');
this.errorSubject.next(error);
throw error;
}
try {
// Get audio stream
this.audioStream = await navigator.mediaDevices.getUserMedia(this.constraints);
console.log('✅ [AudioStream] Got media stream');
if (this.useLinear16) {
// Linear16 format için Web Audio API kullan
await this.startLinear16Recording();
} else {
// Standart MediaRecorder kullan (WebM-Opus)
await this.startMediaRecorderRecording();
}
this.recordingStateSubject.next(true);
console.log('✅ [AudioStream] Recording started successfully');
// Start volume monitoring
this.startVolumeMonitoring();
} catch (error: any) {
console.error('❌ [AudioStream] getUserMedia error:', error);
let audioError: AudioStreamError;
if (error.name === 'NotAllowedError' || error.name === 'PermissionDeniedError') {
audioError = this.createError('permission', 'Microphone permission denied');
} else if (error.name === 'NotFoundError' || error.name === 'DevicesNotFoundError') {
audioError = this.createError('device', 'No microphone found');
} else {
audioError = this.createError('unknown', `Failed to access microphone: ${error.message}`, error);
}
this.errorSubject.next(audioError);
throw audioError;
}
} catch (error) {
console.error('❌ [AudioStream] startRecording error:', error);
this.cleanup();
throw error;
}
}
private async startLinear16Recording(): Promise<void> {
console.log('🎵 Starting Linear16 recording with Web Audio API');
// Create audio context with specific sample rate
this.audioContext = new AudioContext({ sampleRate: 16000 });
// Create source from stream
this.source = this.audioContext.createMediaStreamSource(this.audioStream!);
// Create script processor for raw PCM access
this.scriptProcessor = this.audioContext.createScriptProcessor(2048, 1, 1);
// Debug için chunk counter
let chunkCounter = 0;
this.scriptProcessor.onaudioprocess = (audioEvent) => {
// Get PCM data from input buffer
const inputData = audioEvent.inputBuffer.getChannelData(0);
// Debug: İlk 5 chunk için detaylı log
if (chunkCounter < 5) {
const maxAmplitude = Math.max(...inputData.map(Math.abs));
const avgAmplitude = inputData.reduce((sum, val) => sum + Math.abs(val), 0) / inputData.length;
console.log(`🎤 Audio Debug Chunk #${chunkCounter}:`, {
bufferLength: inputData.length,
maxAmplitude: maxAmplitude.toFixed(6),
avgAmplitude: avgAmplitude.toFixed(6),
firstSamples: Array.from(inputData.slice(0, 10)).map(v => v.toFixed(4)),
silent: maxAmplitude < 0.001
});
}
// Convert Float32Array to Int16Array (Linear16)
const pcmData = this.float32ToInt16(inputData);
// Debug: PCM dönüşümünü kontrol et
if (chunkCounter < 5) {
const pcmArray = Array.from(pcmData.slice(0, 10));
console.log(`🔄 PCM Conversion #${chunkCounter}:`, {
firstPCMSamples: pcmArray,
maxPCM: Math.max(...Array.from(pcmData).map(Math.abs))
});
}
// Convert to base64
const base64Data = this.arrayBufferToBase64(pcmData.buffer);
// Debug: Base64 çıktısını kontrol et
if (chunkCounter < 5) {
console.log(`📦 Base64 Output #${chunkCounter}:`, {
base64Length: base64Data.length,
base64Preview: base64Data.substring(0, 50) + '...'
});
}
chunkCounter++;
// Send chunk
this.audioChunkSubject.next({
data: base64Data,
timestamp: Date.now()
});
};
// Connect nodes
this.source.connect(this.scriptProcessor);
this.scriptProcessor.connect(this.audioContext.destination);
// Test: Mikrofon seviyesini kontrol et
setTimeout(() => {
if (this.source && this.audioContext) {
console.log('🎙️ Audio Context State:', this.audioContext.state);
console.log('🎙️ Sample Rate:', this.audioContext.sampleRate);
}
}, 1000);
console.log('✅ Linear16 recording setup complete');
}
private async startMediaRecorderRecording(): Promise<void> {
// Original MediaRecorder implementation
const mimeType = this.getPreferredMimeType();
const options: MediaRecorderOptions = {};
if (mimeType) {
options.mimeType = mimeType;
}
this.mediaRecorder = new MediaRecorder(this.audioStream!, options);
console.log(`✅ [AudioStream] MediaRecorder created with MIME type: ${mimeType || 'default'}`);
this.setupMediaRecorderHandlers();
this.mediaRecorder.start(100);
}
private float32ToInt16(buffer: Float32Array): Int16Array {
const l = buffer.length;
const result = new Int16Array(l);
// ✅ Gain artır - ses seviyesi çok düşük
const gain = 2.0; // 2x gain uygula
for (let i = 0; i < l; i++) {
// Apply gain and clamp to [-1, 1]
let amplified = buffer[i] * gain;
let clamped = Math.max(-1, Math.min(1, amplified));
// Convert float32 [-1, 1] to int16 [-32768, 32767]
result[i] = clamped < 0 ? clamped * 0x8000 : clamped * 0x7FFF;
}
return result;
}
private arrayBufferToBase64(buffer: ArrayBuffer): string {
const bytes = new Uint8Array(buffer);
let binary = '';
for (let i = 0; i < bytes.byteLength; i++) {
binary += String.fromCharCode(bytes[i]);
}
return btoa(binary);
}
stopRecording(): void {
try {
console.log('🛑 [AudioStream] stopRecording called', {
hasMediaRecorder: !!this.mediaRecorder,
hasScriptProcessor: !!this.scriptProcessor,
state: this.mediaRecorder?.state,
timestamp: new Date().toISOString()
});
if (this.mediaRecorder && this.mediaRecorder.state !== 'inactive') {
this.mediaRecorder.stop();
}
this.cleanup();
this.recordingStateSubject.next(false);
console.log('🛑 [AudioStream] Audio recording stopped successfully');
} catch (error) {
console.error('❌ [AudioStream] Error stopping recording:', error);
this.cleanup();
}
}
private setupMediaRecorderHandlers(): void {
if (!this.mediaRecorder) return;
// Handle data available
this.mediaRecorder.ondataavailable = async (event) => {
try {
if (event.data && event.data.size > 0) {
const base64Data = await this.blobToBase64(event.data);
this.audioChunkSubject.next({
data: base64Data,
timestamp: Date.now()
});
}
} catch (error) {
console.error('Error processing audio chunk:', error);
this.errorSubject.next(this.createError('unknown', 'Failed to process audio chunk', error));
}
};
// Handle recording stop
this.mediaRecorder.onstop = () => {
console.log('MediaRecorder stopped');
this.cleanup();
};
// Handle errors
this.mediaRecorder.onerror = (event: any) => {
console.error('MediaRecorder error:', event);
const error = this.createError('unknown', `Recording error: ${event.error?.message || 'Unknown error'}`, event.error);
this.errorSubject.next(error);
this.stopRecording();
};
}
private getPreferredMimeType(): string {
const types = [
'audio/webm;codecs=opus',
'audio/webm',
'audio/ogg;codecs=opus',
'audio/ogg',
'audio/mp4'
];
for (const type of types) {
if (MediaRecorder.isTypeSupported(type)) {
console.log(`Using MIME type: ${type}`);
return type;
}
}
// Return empty to use browser default
console.warn('No supported MIME types found, using browser default');
return '';
}
private async blobToBase64(blob: Blob): Promise<string> {
return new Promise((resolve, reject) => {
const reader = new FileReader();
reader.onloadend = () => {
if (reader.result && typeof reader.result === 'string') {
// Remove data URL prefix
const base64 = reader.result.split(',')[1];
resolve(base64);
} else {
reject(new Error('Failed to convert blob to base64'));
}
};
reader.onerror = () => {
reject(new Error('FileReader error'));
};
reader.readAsDataURL(blob);
});
}
// Volume level monitoring
private startVolumeMonitoring(): void {
if (!this.audioStream) return;
try {
// Eğer Linear16 için zaten audioContext varsa, onu kullan
if (!this.audioContext) {
this.audioContext = new AudioContext();
this.source = this.audioContext.createMediaStreamSource(this.audioStream);
}
this.analyser = this.audioContext.createAnalyser();
if (this.source) {
this.source.connect(this.analyser);
}
this.analyser.fftSize = 256;
const dataArray = new Uint8Array(this.analyser.frequencyBinCount);
// Monitor volume every 100ms
this.volumeInterval = setInterval(() => {
if (this.analyser) {
this.analyser.getByteFrequencyData(dataArray);
// Calculate average volume
const sum = dataArray.reduce((acc, val) => acc + val, 0);
const average = sum / dataArray.length;
const normalizedVolume = average / 255; // Normalize to 0-1
this.volumeLevelSubject.next(normalizedVolume);
}
}, 100);
} catch (error) {
console.warn('Failed to start volume monitoring:', error);
}
}
private stopVolumeMonitoring(): void {
if (this.volumeInterval) {
clearInterval(this.volumeInterval);
this.volumeInterval = null;
}
// AudioContext'i Linear16 kullanıyorsa kapatma
if (this.audioContext && !this.useLinear16) {
try {
this.audioContext.close();
} catch (error) {
console.warn('Error closing audio context:', error);
}
this.audioContext = null;
this.analyser = null;
}
}
async getVolumeLevel(): Promise<number> {
if (!this.audioStream || !this.analyser) return 0;
try {
const dataArray = new Uint8Array(this.analyser.frequencyBinCount);
this.analyser.getByteFrequencyData(dataArray);
// Calculate average volume
const average = dataArray.reduce((sum, value) => sum + value, 0) / dataArray.length;
return average / 255; // Normalize to 0-1
} catch (error) {
console.error('Error getting volume level:', error);
return 0;
}
}
// Check microphone permissions
async checkMicrophonePermission(): Promise<PermissionState> {
try {
// First check if Permissions API is available
if (!navigator.permissions || !navigator.permissions.query) {
console.warn('Permissions API not supported');
// Try to check by attempting getUserMedia with video disabled
try {
const stream = await navigator.mediaDevices.getUserMedia({ audio: true, video: false });
stream.getTracks().forEach(track => track.stop());
return 'granted';
} catch (error: any) {
if (error.name === 'NotAllowedError' || error.name === 'PermissionDeniedError') {
return 'denied';
}
return 'prompt';
}
}
// Use Permissions API
const result = await navigator.permissions.query({ name: 'microphone' as PermissionName });
return result.state;
} catch (error) {
console.warn('Error checking microphone permission:', error);
// Assume prompt state if we can't determine
return 'prompt';
}
}
private cleanup(): void {
try {
// Stop media recorder
if (this.mediaRecorder && this.mediaRecorder.state !== 'inactive') {
this.mediaRecorder.stop();
}
this.mediaRecorder = null;
// Stop script processor for Linear16
if (this.scriptProcessor) {
this.scriptProcessor.disconnect();
this.scriptProcessor = null;
}
if (this.source && !this.analyser) {
this.source.disconnect();
this.source = null;
}
// Stop all tracks
if (this.audioStream) {
this.audioStream.getTracks().forEach(track => {
track.stop();
});
this.audioStream = null;
}
// Stop volume monitoring
this.stopVolumeMonitoring();
// Close audio context if using Linear16
if (this.audioContext && this.useLinear16) {
try {
this.audioContext.close();
} catch (error) {
console.warn('Error closing audio context:', error);
}
this.audioContext = null;
}
} catch (error) {
console.error('Error during cleanup:', error);
}
}
private createError(type: AudioStreamError['type'], message: string, originalError?: any): AudioStreamError {
return {
type,
message,
originalError
};
}
// Get recording state
isRecording(): boolean {
return (this.mediaRecorder !== null && this.mediaRecorder.state === 'recording') ||
(this.scriptProcessor !== null);
}
// Get available audio devices
async getAudioDevices(): Promise<MediaDeviceInfo[]> {
try {
const devices = await navigator.mediaDevices.enumerateDevices();
return devices.filter(device => device.kind === 'audioinput');
} catch (error) {
console.error('Error enumerating devices:', error);
return [];
}
}
// Switch audio device
async switchAudioDevice(deviceId: string): Promise<void> {
if (this.isRecording()) {
// Stop current recording
this.stopRecording();
// Update constraints with new device
this.constraints.audio = {
...this.constraints.audio,
deviceId: { exact: deviceId }
} as any;
// Restart recording with new device
await this.startRecording();
} else {
// Just update constraints for next recording
this.constraints.audio = {
...this.constraints.audio,
deviceId: { exact: deviceId }
} as any;
}
}
// Linear16 format kullanımını aç/kapa
setUseLinear16(use: boolean): void {
this.useLinear16 = use;
console.log(`Audio format switched to: ${use ? 'Linear16' : 'WebM-Opus'}`);
}
} |