arx-convert/dist/amb/AmbHeader.js

Converts various Arx Fatalis formats to JSON or YAML and back

import { AMB_VERSION_1003, AMB_VERSION_1002 } from './constants.js';
import { BinaryIO } from '../common/BinaryIO.js';
export class AmbHeader {
    /**
     * @see https://github.com/arx/ArxLibertatis/blob/1.2.1/src/audio/Ambiance.cpp#L627
     */
    static readFrom(binary) {
        binary.readString(4); // identifier - always "GAMB"
        const version = binary.readUint32();
        return {
            isNewerVersion: version >= AMB_VERSION_1002,
            numberOfTracks: binary.readUint32(),
        };
    }
    static accumulateFrom(json) {
        const buffer = new ArrayBuffer(AmbHeader.sizeOf());
        const binary = new BinaryIO(buffer);
        binary.writeString('GAMB', 4);
        binary.writeInt32(AMB_VERSION_1003);
        binary.writeInt32(json.tracks.length);
        return buffer;
    }
    static sizeOf() {
        return BinaryIO.sizeOfString(4) + BinaryIO.sizeOfInt32() * 2;
    }
}
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