"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.AIFFParser = void 0;
const Token = require("token-types");
const initDebug = require("debug");
const strtok3 = require("strtok3/lib/core");
const ID3v2Parser_1 = require("../id3v2/ID3v2Parser");
const FourCC_1 = require("../common/FourCC");
const BasicParser_1 = require("../common/BasicParser");
const AiffToken = require("./AiffToken");
const iff = require("../iff");
const debug = initDebug('music-metadata:parser:aiff');
/**
 * AIFF - Audio Interchange File Format
 *
 * Ref:
 *  http://www.onicos.com/staff/iz/formats/aiff.html
 *  http://muratnkonar.com/aiff/index.html
 *  http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/AIFF/AIFF.html
 */
class AIFFParser extends BasicParser_1.BasicParser {
    async parse() {
        const header = await this.tokenizer.readToken(iff.Header);
        if (header.chunkID !== 'FORM')
            throw new Error('Invalid Chunk-ID, expected \'FORM\''); // Not AIFF format
        const type = await this.tokenizer.readToken(FourCC_1.FourCcToken);
        switch (type) {
            case 'AIFF':
                this.metadata.setFormat('container', type);
                this.isCompressed = false;
                break;
            case 'AIFC':
                this.metadata.setFormat('container', 'AIFF-C');
                this.isCompressed = true;
                break;
            default:
                throw Error('Unsupported AIFF type: ' + type);
        }
        this.metadata.setFormat('lossless', !this.isCompressed);
        try {
            while (!this.tokenizer.fileInfo.size || this.tokenizer.fileInfo.size - this.tokenizer.position >= iff.Header.len) {
                debug('Reading AIFF chunk at offset=' + this.tokenizer.position);
                const chunkHeader = await this.tokenizer.readToken(iff.Header);
                debug(`Chunk id=${chunkHeader.chunkID}`);
                const nextChunk = 2 * Math.round(chunkHeader.chunkSize / 2);
                const bytesRead = await this.readData(chunkHeader);
                await this.tokenizer.ignore(nextChunk - bytesRead);
            }
        }
        catch (err) {
            if (err instanceof strtok3.EndOfStreamError) {
                debug(`End-of-stream`);
            }
            else {
                throw err;
            }
        }
    }
    async readData(header) {
        switch (header.chunkID) {
            case 'COMM': // The Common Chunk
                const common = await this.tokenizer.readToken(new AiffToken.Common(header, this.isCompressed));
                this.metadata.setFormat('bitsPerSample', common.sampleSize);
                this.metadata.setFormat('sampleRate', common.sampleRate);
                this.metadata.setFormat('numberOfChannels', common.numChannels);
                this.metadata.setFormat('numberOfSamples', common.numSampleFrames);
                this.metadata.setFormat('duration', common.numSampleFrames / common.sampleRate);
                this.metadata.setFormat('codec', common.compressionName);
                return header.chunkSize;
            case 'ID3 ': // ID3-meta-data
                const id3_data = await this.tokenizer.readToken(new Token.Uint8ArrayType(header.chunkSize));
                const rst = strtok3.fromBuffer(id3_data);
                await new ID3v2Parser_1.ID3v2Parser().parse(this.metadata, rst, this.options);
                return header.chunkSize;
            case 'SSND': // Sound Data Chunk
                if (this.metadata.format.duration) {
                    this.metadata.setFormat('bitrate', 8 * header.chunkSize / this.metadata.format.duration);
                }
                return 0;
            default:
                return 0;
        }
    }
}
exports.AIFFParser = AIFFParser;
