@infinito/id3/lib/get/id3.2.3.js

ID3 Tag Reader/Writer

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = getID3v2_3;

var _constants = require("../constants.js");

var _id3tag = _interopRequireDefault(require("../classes/id3tag.js"));

var _id323Frame = _interopRequireDefault(require("../classes/id3.2.3.frame.js"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function getID3v2_3(path, buf, subver, flags, size) {
  if (!(buf instanceof ArrayBuffer)) {
    throw new TypeError('parameter buf must be an instance of an ArrayBuffer');
  }

  var pos = _constants.constants.ID3_HEADER_LENGTH_BYTES;
  /* Check flags */

  if (flags & 0x80 > 0) {//Unsynchronization Flag
  }

  if (flags & 0x40 > 0) {
    //Extended Header Flag
    console.error(path);
    console.log(flags);
    console.log(flags & 0x80);
    throw new Error("Extended header flag not implemented");
    return false;
  }

  if (flags & 0x20 > 0) {//Experimental Flag set
  }

  var _ref = new _id323Frame.default('default'),
      FRAME_ID_SIZE_BYTES = _ref.FRAME_ID_SIZE_BYTES,
      FRAME_SIZE_BYTES = _ref.FRAME_SIZE_BYTES,
      FRAME_HEADER_SIZE_BYTES = _ref.FRAME_HEADER_SIZE_BYTES;

  var tags = new _id3tag.default(path);

  while (pos < size) {
    try {
      var frame = new _id323Frame.default(buf, pos);
    } catch (error) {
      var skip = 0;
      var tempbuf = new Uint8Array(buf, pos + FRAME_ID_SIZE_BYTES, FRAME_SIZE_BYTES);

      for (var i = 0; i < FRAME_SIZE_BYTES; i++) {
        skip <<= 8;
        skip += tempbuf[i];
      }

      if (skip == 0) {
        //Check for padding
        var _tempbuf = new Uint8Array(buf, pos, size - pos);

        for (var _i = 0; _i < _tempbuf.length; _i++) {
          if (_tempbuf[_i] != 0) {
            throw new Error(error);
            return false;
          }
        }

        pos = size;
        break;
      } else {
        pos += skip + FRAME_HEADER_SIZE_BYTES;
        continue;
      }
    }

    pos += frame.size + FRAME_HEADER_SIZE_BYTES;

    try {
      frame.add_to_ID3(tags);
    } catch (error) {
      throw new Error(error);
      return false;
    }
  }

  return tags;
}