@lightningtv/renderer/src/core/renderers/CoreContextTexture.ts

Lightning 3 Renderer

/*
 * If not stated otherwise in this file or this component's LICENSE file the
 * following copyright and licenses apply:
 *
 * Copyright 2023 Comcast Cable Communications Management, LLC.
 *
 * Licensed under the Apache License, Version 2.0 (the License);
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import type { TextureMemoryManager } from '../TextureMemoryManager.js';
import type { Texture } from '../textures/Texture.js';

export abstract class CoreContextTexture {
  readonly textureSource: Texture;
  private memManager: TextureMemoryManager;
  public state: 'freed' | 'loading' | 'loaded' | 'failed' = 'freed';

  constructor(memManager: TextureMemoryManager, textureSource: Texture) {
    this.memManager = memManager;
    this.textureSource = textureSource;
  }

  protected setTextureMemUse(byteSize: number): void {
    this.memManager.setTextureMemUse(this.textureSource, byteSize);
  }

  abstract load(): void;
  abstract free(): void;

  get renderable(): boolean {
    return this.textureSource.renderable;
  }
}