flutter_vid/lib/us/vid_us_visual.dart

import 'dart:typed_data';
import 'package:vid/us/vid_us_2d_visual.dart';
import 'package:vid/us/vid_us_3d_visual.dart';
import 'package:vid/us/vid_us_data_reader.dart';
import 'package:vid/us/vid_us_data_writer.dart';
import 'package:vid/us/vid_us_display_mode.dart';
import 'package:vid/us/vid_us_mode.dart';
import 'package:vid/us/vid_us_visual_indicator.dart';
import 'package:vid/us/vid_us_visual_type.dart';

class VidUsVisual {
  late VidUsDisplayMode _displayMode;
  late VidUsModeType _activeModeType;
  late VidUsVisualIndicator _indicator;
  late VidUsVisualType _visualType;
  late List<VidUsMode> _modes;

  /// Gets or sets the Display mode of this image.
  VidUsDisplayMode get displayMode => _displayMode;

  /// Gets the visual type of this Visual.
  VidUsVisualType get visualType => _visualType;

  /// Gets or sets the Indicator of this Visual.
  VidUsVisualIndicator get indicator => _indicator;

  /// Gets or set the active mode type of this visual.
  VidUsModeType get activeModeType => _activeModeType;

  /// Gets all modse of this visual.
  List<VidUsMode> get modes => _modes;

  VidUsVisual() {
    _activeModeType = VidUsModeType.Undefined;
    _modes = [];
    //Default is A
    _indicator = VidUsVisualIndicator.A;
    //Default is Normal
    _displayMode = VidUsDisplayMode.Normal;
  }

  void setVisualType(VidUsVisualType type) {
    _visualType = type;
  }

  void setIndicator(VidUsVisualIndicator indicator) {
    _indicator = indicator;
  }

  void setActiveModeType(VidUsModeType type) {
    _activeModeType = type;
  }

  void setDisplayMode(VidUsDisplayMode mode) {
    _displayMode = mode;
  }

  Uint8List toBytes() {
    var writer = VidUsDataWriter();
    writer.writeByte(_visualType.index);
    writer.writeByte(_displayMode.index);
    writer.writeByte(_indicator.index);
    writer.writeByte(_activeModeType.index);
    writer.writeByte(_modes.length);
    _modes.forEach((mode) {
      writer.writeBytes(mode.toBytes());
    });
    return writer.data;
  }

  static VidUsVisual fromBytes(Uint8List bytes) {
    var reader = VidUsDataReader(bytes);

    var visualType = VidUsVisualType.values[reader.readByte()];
    if (visualType == VidUsVisualType.V2D) {
      return VidUs2DVisual.fromBytes(bytes);
    }
    if (visualType == VidUsVisualType.V3D) {
      return VidUs3DVisual.fromBytes(bytes);
    }
    throw Exception("Not supported visual $visualType");
  }
}