content: /*
   * Copyright 2022 The Android Open Source Project
   *
   * 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.
   */
  package com.google.android.exoplayer2.effect;
  
  /**
   * Interface for a {@link GlTextureProcessor} that samples from an external texture.
   *
   * <p>Use {@link #setTextureTransformMatrix(float[])} to provide the texture's transformation
   * matrix.
   */
  /* package */ interface ExternalTextureProcessor extends GlTextureProcessor {
  
    /**
     * Sets the texture transform matrix for converting an external surface texture's coordinates to
     * sampling locations.
     *
     * @param textureTransformMatrix The external surface texture's {@linkplain
     *     android.graphics.SurfaceTexture#getTransformMatrix(float[]) transform matrix}.
     */
    void setTextureTransformMatrix(float[] textureTransformMatrix);
  }
  