fma-snes65816/dist/BufferSizeModifier.js

SNES 65816 assembler backend for FMA

'use strict';

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

var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');

var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);

var _createClass2 = require('babel-runtime/helpers/createClass');

var _createClass3 = _interopRequireDefault(_createClass2);

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

var BufferSizeModifier = function () {
  function BufferSizeModifier() {
    (0, _classCallCheck3.default)(this, BufferSizeModifier);
  }

  (0, _createClass3.default)(BufferSizeModifier, [{
    key: 'resize',
    value: function resize(buffer, headerLocation) {
      var targetBufferSize = this.getTargetBufferSize(buffer.length);
      var newSize = BufferSizeModifier.BUFFER_SIZE[targetBufferSize];

      var newBuffer = new Uint8Array(newSize);
      newBuffer.set(buffer, 0);

      newBuffer[headerLocation + 0x27] = targetBufferSize;

      return new Buffer(newBuffer);
    }
  }, {
    key: 'getTargetBufferSize',
    value: function getTargetBufferSize(size) {
      for (var value in BufferSizeModifier.BUFFER_SIZE) {
        if (size <= BufferSizeModifier.BUFFER_SIZE[value]) {
          return value;
        }
      }

      throw new Error('ROM file is too large');
    }
  }]);
  return BufferSizeModifier;
}();

exports.default = BufferSizeModifier;


BufferSizeModifier.BUFFER_SIZE = {
  0x08: 2 * 1024 * 1024 / 8,
  0x09: 4 * 1024 * 1024 / 8,
  0x0A: 8 * 1024 * 1024 / 8,
  0x0B: 16 * 1024 * 1024 / 8,
  0x0C: 32 * 1024 * 1024 / 8,
  0x0D: 64 * 1024 * 1024 / 8
};
//# sourceMappingURL=BufferSizeModifier.js.map