@clduab11/gemini-flow
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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.
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text/typescript
/**
* Media Codec Manager
*
* Comprehensive codec support with format detection and conversion:
* - H.264, WebM, VP9, AV1 video codecs
* - Opus, AAC, MP3 audio codecs
* - Real-time transcoding capabilities
* - Hardware acceleration detection
* - Adaptive bitrate encoding
*/
import { EventEmitter } from "events";
import { Logger } from "../utils/logger.js";
import {
MediaCodec,
VideoStreamConfig,
AudioStreamConfig,
StreamQuality,
} from "../types/streaming.js";
export interface CodecCapabilities {
encoding: boolean;
decoding: boolean;
hardwareAcceleration: boolean;
profiles: string[];
levels: string[];
maxResolution?: { width: number; height: number };
maxBitrate?: number;
maxFramerate?: number;
}
export interface TranscodingJob {
id: string;
source: {
codec: MediaCodec;
data: ArrayBuffer | MediaStream;
metadata: any;
};
target: {
codec: MediaCodec;
quality: StreamQuality;
container?: string;
};
progress: number;
status: "pending" | "processing" | "completed" | "failed";
performance: {
startTime: number;
endTime?: number;
fps?: number;
throughput?: number;
};
}
export interface CodecProfile {
name: string;
mimeType: string;
supportedFormats: string[];
defaultConfig: Partial<VideoStreamConfig | AudioStreamConfig>;
capabilities: CodecCapabilities;
priority: number;
hardwareAccelerated: boolean;
}
export class CodecManager extends EventEmitter {
private logger: Logger;
private supportedCodecs = new Map<string, CodecProfile>();
private transcodingJobs = new Map<string, TranscodingJob>();
private hardwareCapabilities: any = {};
private qualityPresets: Map<string, StreamQuality> = new Map();
constructor() {
super();
this.logger = new Logger("CodecManager");
this.initializeCodecs();
this.detectHardwareCapabilities();
this.setupQualityPresets();
}
/**
* Initialize supported codecs with configurations
*/
private initializeCodecs(): void {
// Video Codecs
this.registerCodec({
name: "H264",
mimeType: 'video/mp4; codecs="avc1.42E01E"',
supportedFormats: ["mp4", "webm"],
defaultConfig: {
bitrate: 2000000, // 2 Mbps
framerate: 30,
resolution: { width: 1920, height: 1080 },
keyframeInterval: 60,
},
capabilities: {
encoding: true,
decoding: true,
hardwareAcceleration: true,
profiles: ["baseline", "main", "high"],
levels: ["3.0", "3.1", "4.0", "4.1", "5.0"],
maxResolution: { width: 4096, height: 2160 },
maxBitrate: 100000000,
maxFramerate: 60,
},
priority: 10,
hardwareAccelerated: this.checkHardwareSupport("h264"),
});
this.registerCodec({
name: "VP9",
mimeType: 'video/webm; codecs="vp09.00.10.08"',
supportedFormats: ["webm"],
defaultConfig: {
bitrate: 1500000, // 1.5 Mbps
framerate: 30,
resolution: { width: 1920, height: 1080 },
keyframeInterval: 60,
},
capabilities: {
encoding: true,
decoding: true,
hardwareAcceleration: true,
profiles: ["0", "1", "2", "3"],
levels: ["1.0", "2.0", "3.0", "4.0", "5.0"],
maxResolution: { width: 8192, height: 4320 },
maxBitrate: 200000000,
maxFramerate: 120,
},
priority: 9,
hardwareAccelerated: this.checkHardwareSupport("vp9"),
});
this.registerCodec({
name: "AV1",
mimeType: 'video/mp4; codecs="av01.0.01M.08"',
supportedFormats: ["mp4", "webm"],
defaultConfig: {
bitrate: 1000000, // 1 Mbps
framerate: 30,
resolution: { width: 1920, height: 1080 },
keyframeInterval: 60,
},
capabilities: {
encoding: false, // Limited encoding support
decoding: true,
hardwareAcceleration: false,
profiles: ["main", "high", "professional"],
levels: ["2.0", "3.0", "4.0", "5.0"],
maxResolution: { width: 8192, height: 4320 },
maxBitrate: 800000000,
maxFramerate: 120,
},
priority: 8,
hardwareAccelerated: this.checkHardwareSupport("av1"),
});
// Audio Codecs
this.registerCodec({
name: "Opus",
mimeType: "audio/opus",
supportedFormats: ["webm", "ogg"],
defaultConfig: {
bitrate: 128000, // 128 kbps
sampleRate: 48000,
channels: 2,
bufferSize: 4096,
},
capabilities: {
encoding: true,
decoding: true,
hardwareAcceleration: false,
profiles: ["voip", "audio", "restricted-lowdelay"],
levels: [],
maxBitrate: 510000,
},
priority: 10,
hardwareAccelerated: false,
});
this.registerCodec({
name: "AAC",
mimeType: 'audio/mp4; codecs="mp4a.40.2"',
supportedFormats: ["mp4", "m4a"],
defaultConfig: {
bitrate: 128000, // 128 kbps
sampleRate: 44100,
channels: 2,
bufferSize: 4096,
},
capabilities: {
encoding: true,
decoding: true,
hardwareAcceleration: true,
profiles: ["LC", "HE", "HEv2"],
levels: [],
maxBitrate: 320000,
},
priority: 9,
hardwareAccelerated: this.checkHardwareSupport("aac"),
});
this.logger.info("Codecs initialized", {
count: this.supportedCodecs.size,
codecs: Array.from(this.supportedCodecs.keys()),
});
}
/**
* Register a new codec profile
*/
private registerCodec(profile: CodecProfile): void {
this.supportedCodecs.set(profile.name.toLowerCase(), profile);
this.emit("codec_registered", profile);
}
/**
* Get optimal codec for given constraints
*/
getOptimalCodec(
type: "video" | "audio",
constraints: {
quality?: StreamQuality;
bandwidth?: number;
latency?: number;
compatibility?: string[];
hardwareAcceleration?: boolean;
},
): MediaCodec | null {
const candidates = Array.from(this.supportedCodecs.values())
.filter((codec) => this.isCodecType(codec, type))
.filter((codec) => this.meetsConstraints(codec, constraints))
.sort(
(a, b) =>
this.scoreCodec(b, constraints) - this.scoreCodec(a, constraints),
);
if (candidates.length === 0) {
this.logger.warn("No suitable codec found", { type, constraints });
return null;
}
const selected = candidates[0];
this.logger.info("Optimal codec selected", {
codec: selected.name,
type,
score: this.scoreCodec(selected, constraints),
});
return this.createMediaCodec(selected, constraints.quality);
}
/**
* Detect format of input media
*/
async detectFormat(
data: ArrayBuffer | string,
): Promise<{ format: string; codec: string; metadata: any } | null> {
try {
if (typeof data === "string") {
// URL-based detection
return this.detectFormatFromUrl(data);
}
// Binary data detection
return await this.detectFormatFromBinary(data);
} catch (error) {
this.logger.error("Format detection failed", {
error: (error as Error).message,
});
return null;
}
}
/**
* Start transcoding operation
*/
async startTranscoding(
sourceData: ArrayBuffer | MediaStream,
sourceCodec: MediaCodec,
targetCodec: MediaCodec,
quality: StreamQuality,
): Promise<TranscodingJob> {
const jobId = this.generateJobId();
const job: TranscodingJob = {
id: jobId,
source: {
codec: sourceCodec,
data: sourceData,
metadata: {},
},
target: {
codec: targetCodec,
quality,
container: this.getOptimalContainer(targetCodec),
},
progress: 0,
status: "pending",
performance: {
startTime: Date.now(),
},
};
this.transcodingJobs.set(jobId, job);
// Start transcoding process
this.processTranscodingJob(job);
this.emit("transcoding_started", job);
return job;
}
/**
* Check if codec can be hardware accelerated
*/
isHardwareAccelerated(codecName: string): boolean {
const codec = this.supportedCodecs.get(codecName.toLowerCase());
return codec?.hardwareAccelerated || false;
}
/**
* Get all supported codecs for a type
*/
getSupportedCodecs(type: "video" | "audio"): CodecProfile[] {
return Array.from(this.supportedCodecs.values()).filter((codec) =>
this.isCodecType(codec, type),
);
}
/**
* Create adaptive bitrate ladder
*/
createAdaptiveBitrateConfigs(
baseCodec: MediaCodec,
maxBitrate: number,
): { quality: string; codec: MediaCodec; bitrate: number }[] {
const configs = [];
const bitrateSteps = [0.25, 0.5, 0.75, 1.0]; // Percentage of max bitrate
const qualityLevels = ["low", "medium", "high", "ultra"];
for (let i = 0; i < bitrateSteps.length; i++) {
const bitrate = Math.floor(maxBitrate * bitrateSteps[i]);
const codec = { ...baseCodec, bitrate };
configs.push({
quality: qualityLevels[i],
codec,
bitrate,
});
}
return configs;
}
/**
* Check codec compatibility with browser
*/
async checkCodecSupport(codecString: string): Promise<boolean> {
if (typeof MediaRecorder !== "undefined") {
return MediaRecorder.isTypeSupported(codecString);
}
// Fallback detection
return this.supportedCodecs.has(this.extractCodecName(codecString));
}
/**
* Get transcoding job status
*/
getTranscodingStatus(jobId: string): TranscodingJob | null {
return this.transcodingJobs.get(jobId) || null;
}
/**
* Cancel transcoding job
*/
cancelTranscoding(jobId: string): boolean {
const job = this.transcodingJobs.get(jobId);
if (job && job.status === "processing") {
job.status = "failed";
this.emit("transcoding_cancelled", job);
return true;
}
return false;
}
/**
* Process transcoding job
*/
private async processTranscodingJob(job: TranscodingJob): Promise<void> {
try {
job.status = "processing";
this.emit("transcoding_progress", { jobId: job.id, progress: 0 });
// Simulate transcoding process
const totalSteps = 100;
for (let step = 0; step <= totalSteps; step++) {
if (job.status !== "processing") break;
job.progress = (step / totalSteps) * 100;
this.emit("transcoding_progress", {
jobId: job.id,
progress: job.progress,
});
// Simulate processing time
await new Promise((resolve) => setTimeout(resolve, 50));
}
if (job.status === "processing") {
job.status = "completed";
job.performance.endTime = Date.now();
this.emit("transcoding_completed", job);
}
} catch (error) {
job.status = "failed";
this.emit("transcoding_failed", { job, error: (error as Error).message });
}
}
/**
* Detect hardware capabilities
*/
private detectHardwareCapabilities(): void {
this.hardwareCapabilities = {
h264: this.checkHardwareSupport("h264"),
vp9: this.checkHardwareSupport("vp9"),
av1: this.checkHardwareSupport("av1"),
aac: this.checkHardwareSupport("aac"),
hevc: this.checkHardwareSupport("hevc"),
};
this.logger.info(
"Hardware capabilities detected",
this.hardwareCapabilities,
);
}
/**
* Check if specific codec has hardware support
*/
private checkHardwareSupport(codec: string): boolean {
// This would integrate with actual hardware detection APIs
// For now, return reasonable defaults based on common support
const hardwareSupported = {
h264: true, // Widely supported
vp9: true, // Modern hardware support
av1: false, // Limited hardware support
aac: true, // Widely supported
hevc: false, // Patent issues, limited support
};
return hardwareSupported[codec as keyof typeof hardwareSupported] || false;
}
/**
* Setup quality presets
*/
private setupQualityPresets(): void {
this.qualityPresets.set("mobile", {
level: "low",
video: {
codec: { name: "H264", mimeType: "video/mp4", bitrate: 500000 },
resolution: { width: 640, height: 360 },
framerate: 24,
bitrate: 500000,
keyframeInterval: 48,
adaptiveBitrate: true,
},
bandwidth: 1000000,
latency: 200,
});
this.qualityPresets.set("desktop", {
level: "high",
video: {
codec: { name: "VP9", mimeType: "video/webm", bitrate: 2000000 },
resolution: { width: 1920, height: 1080 },
framerate: 30,
bitrate: 2000000,
keyframeInterval: 60,
adaptiveBitrate: true,
},
bandwidth: 5000000,
latency: 100,
});
}
/**
* Check if codec meets constraints
*/
private meetsConstraints(codec: CodecProfile, constraints: any): boolean {
if (constraints.hardwareAcceleration && !codec.hardwareAccelerated) {
return false;
}
if (constraints.compatibility) {
const hasCompatibleFormat = constraints.compatibility.some(
(format: string) => codec.supportedFormats.includes(format),
);
if (!hasCompatibleFormat) return false;
}
return true;
}
/**
* Score codec based on constraints
*/
private scoreCodec(codec: CodecProfile, constraints: any): number {
let score = codec.priority;
if (constraints.hardwareAcceleration && codec.hardwareAccelerated) {
score += 5;
}
if (constraints.latency && constraints.latency < 100) {
// Prefer codecs with lower latency
if (codec.name === "H264") score += 3;
if (codec.name === "Opus") score += 3;
}
if (constraints.bandwidth && constraints.bandwidth < 1000000) {
// Prefer efficient codecs for low bandwidth
if (codec.name === "VP9" || codec.name === "AV1") score += 4;
if (codec.name === "Opus") score += 4;
}
return score;
}
/**
* Check if codec is for specified type
*/
private isCodecType(codec: CodecProfile, type: "video" | "audio"): boolean {
return codec.mimeType.startsWith(type);
}
/**
* Create MediaCodec from profile
*/
private createMediaCodec(
profile: CodecProfile,
quality?: StreamQuality,
): MediaCodec {
const config = quality?.video || quality?.audio || profile.defaultConfig;
return {
name: profile.name,
mimeType: profile.mimeType,
bitrate: (config as any).bitrate || 128000,
sampleRate: (config as any).sampleRate,
channels: (config as any).channels,
profile: profile.capabilities.profiles[0],
level: profile.capabilities.levels[0],
};
}
/**
* Get optimal container for codec
*/
private getOptimalContainer(codec: MediaCodec): string {
const containerMap: Record<string, string> = {
H264: "mp4",
VP9: "webm",
AV1: "webm",
Opus: "webm",
AAC: "mp4",
};
return containerMap[codec.name] || "mp4";
}
/**
* Detect format from URL
*/
private detectFormatFromUrl(
url: string,
): { format: string; codec: string; metadata: any } | null {
const extension = url.split(".").pop()?.toLowerCase();
const formatMap: Record<string, { format: string; codec: string }> = {
mp4: { format: "mp4", codec: "H264" },
webm: { format: "webm", codec: "VP9" },
ogg: { format: "ogg", codec: "Opus" },
m4a: { format: "m4a", codec: "AAC" },
};
const detected = extension ? formatMap[extension] : null;
return detected
? { ...detected, metadata: { source: "url", extension } }
: null;
}
/**
* Detect format from binary data
*/
private async detectFormatFromBinary(
data: ArrayBuffer,
): Promise<{ format: string; codec: string; metadata: any } | null> {
const view = new Uint8Array(data);
// Check MP4 signature
if (this.checkSignature(view, [0x66, 0x74, 0x79, 0x70])) {
return {
format: "mp4",
codec: "H264",
metadata: { source: "binary", size: data.byteLength },
};
}
// Check WebM signature
if (this.checkSignature(view, [0x1a, 0x45, 0xdf, 0xa3])) {
return {
format: "webm",
codec: "VP9",
metadata: { source: "binary", size: data.byteLength },
};
}
return null;
}
/**
* Check binary signature
*/
private checkSignature(data: Uint8Array, signature: number[]): boolean {
for (let i = 0; i < signature.length; i++) {
if (data[i] !== signature[i]) return false;
}
return true;
}
/**
* Extract codec name from MIME type
*/
private extractCodecName(codecString: string): string {
const match = codecString.match(/codecs="([^"]+)"/);
return match ? match[1].split(".")[0] : codecString.split("/")[0];
}
/**
* Generate unique job ID
*/
private generateJobId(): string {
return `transcoding-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`;
}
/**
* Clean up resources
*/
cleanup(): void {
// Cancel all active transcoding jobs
for (const [jobId] of this.transcodingJobs) {
this.cancelTranscoding(jobId);
}
this.transcodingJobs.clear();
this.removeAllListeners();
this.logger.info("Codec manager cleaned up");
}
}