SoundFontInfo.fromReader constructor

SoundFontInfo.fromReader(BinaryReader reader)

Implementation

factory SoundFontInfo.fromReader(BinaryReader reader) {

  String chunkId = reader.readFourCC();
  if (chunkId != "LIST") {
    throw "The LIST chunk was not found.";
  }

  int end = reader.readInt32();
  end += reader.pos;

  String listType = reader.readFourCC();
  if (listType != "INFO") {
    throw "The type of the LIST chunk must be 'INFO', but was '$listType'.";
  }

  SoundFontVersion version = SoundFontVersion(major: 0, minor: 0);
  String targetSoundEngine = '';
  String bankName = '';
  String romName = '';
  SoundFontVersion romVersion = SoundFontVersion(major: 0, minor: 0);
  String creationDate = '';
  String author = '';
  String targetProduct = '';
  String copyright = '';
  String comments = '';
  String tools = '';

  while (reader.pos < end) {
    String id = reader.readFourCC();
    int size = reader.readInt32();

    switch (id) {
      case "ifil":
        version = SoundFontVersion.fromReader(reader);
        break;
      case "isng":
        targetSoundEngine = reader.readFixedLengthString(size);
        break;
      case "INAM":
        bankName = reader.readFixedLengthString(size);
        break;
      case "irom":
        romName = reader.readFixedLengthString(size);
        break;
      case "iver":
        romVersion = SoundFontVersion.fromReader(reader);
        break;
      case "ICRD":
        creationDate = reader.readFixedLengthString(size);
        break;
      case "IENG":
        author = reader.readFixedLengthString(size);
        break;
      case "IPRD":
        targetProduct = reader.readFixedLengthString(size);
        break;
      case "ICOP":
        copyright = reader.readFixedLengthString(size);
        break;
      case "ICMT":
        comments = reader.readFixedLengthString(size);
        break;
      case "ISFT":
        tools = reader.readFixedLengthString(size);
        break;
      default:
        throw "The INFO list contains an unknown ID '$id'.";
    }
  }

  return   SoundFontInfo(
    version: version,
    targetSoundEngine: targetSoundEngine,
    bankName: bankName,
    romName: romName,
    romVersion: romVersion,
    creationDate: creationDate,
    author: author,
    targetProduct: targetProduct,
    copyright: copyright,
    comments: comments,
    tools: tools
  );
}