import { Codec } from "./types.js";
import { PCMUCodec, PCMACodec } from "./g711.js";
import { G722Codec } from "./g722.js";
import { getLogger } from "../logger.js";
/**
* Codec registry - maintains backward compatibility while adding G.722 support
*/
const codecs: Map<number, () => Codec> = new Map();
// Always register G.711 codecs (backward compatibility)
codecs.set(0, () => new PCMUCodec());
codecs.set(8, () => new PCMACodec());
// Conditionally register G.722 if available
let g722Available = false;
let g722Reason = '';
if (G722Codec.isAvailable()) {
codecs.set(9, () => new G722Codec());
g722Available = true;
} else {
g722Reason = G722Codec.getUnavailableReason() || 'Unknown reason';
}
// Log codec status only when explicitly requested (not at import time)
export function logCodecStatus(): void {
if (g722Available) {
getLogger().codec.info('✅ G.722 codec support enabled');
} else {
getLogger().codec.info(`ℹ️ G.722 codec not available: ${g722Reason}`);
}
}
/**
* Get a codec instance by payload type
* @param payloadType RTP payload type
* @returns Codec instance or undefined if not supported
*/
export function getCodec(payloadType: number): Codec | undefined {
const codecFactory = codecs.get(payloadType);
if (codecFactory) {
try {
return codecFactory();
} catch (error) {
getLogger().codec.error(`Failed to create codec for payload type ${payloadType}:`, error);
return undefined;
}
}
return undefined;
}
/**
* Get list of supported payload types
*/
export function getSupportedPayloadTypes(): number[] {
return Array.from(codecs.keys()).sort();
}
/**
* Check if a payload type is supported
*/
export function isPayloadTypeSupported(payloadType: number): boolean {
return codecs.has(payloadType);
}
// Re-export types and codec classes
export { Codec, PCMUCodec, PCMACodec, G722Codec };
