1227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks/* 2227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Copyright (C) 2011 The Android Open Source Project 3227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * 4227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Licensed under the Apache License, Version 2.0 (the "License"); 5227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * you may not use this file except in compliance with the License. 6227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * You may obtain a copy of the License at 7227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * 8227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * http://www.apache.org/licenses/LICENSE-2.0 9227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * 10227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Unless required by applicable law or agreed to in writing, software 11227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * distributed under the License is distributed on an "AS IS" BASIS, 12227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * See the License for the specific language governing permissions and 14227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * limitations under the License. 15227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks */ 16227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 17227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendrickspackage androidx.media.filterpacks.transform; 18227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 19227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.Frame; 20227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.FrameImage2D; 21227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.FrameType; 22227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.TextureSource; 23227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 24227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport java.util.Arrays; 25227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 26227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks/** Internal class that contains utility functions used by the transform filters. **/ 27227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksclass TransformUtils { 28227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 29227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public static int powOf2(int x) { 30227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks --x; 31227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks // Fill with 1s 32227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks x |= x >> 1; 33227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks x |= x >> 2; 34227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks x |= x >> 4; 35227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks x |= x >> 8; 36227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks x |= x >> 16; 37227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks // Next int is now pow-of-2 38227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks return x + 1; 39227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 40227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 41227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public static FrameImage2D makeMipMappedFrame(FrameImage2D current, int[] dimensions) { 42227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks // Note: Future versions of GLES will support NPOT mipmapping. When these become more 43227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks // widely used, we can add a check here to disable frame expansion on such devices. 44227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks int[] pow2Dims = new int[] { powOf2(dimensions[0]), powOf2(dimensions[1]) }; 45227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (current == null) { 46227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameType imageType = FrameType.image2D(FrameType.ELEMENT_RGBA8888, 47227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameType.READ_GPU | FrameType.WRITE_GPU); 48227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks current = Frame.create(imageType, pow2Dims).asFrameImage2D(); 49227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } else if (!Arrays.equals(dimensions, current.getDimensions())) { 50227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks current.resize(pow2Dims); 51227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 52227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks return current; 53227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 54227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 55227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public static FrameImage2D makeTempFrame(FrameImage2D current, int[] dimensions) { 56227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (current == null) { 57227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameType imageType = FrameType.image2D(FrameType.ELEMENT_RGBA8888, 58227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameType.READ_GPU | FrameType.WRITE_GPU); 59227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks current = Frame.create(imageType, dimensions).asFrameImage2D(); 60227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } else if (!Arrays.equals(dimensions, current.getDimensions())) { 61227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks current.resize(dimensions); 62227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 63227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks return current; 64227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 65227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 66227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public static void generateMipMaps(FrameImage2D frame) { 67227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks TextureSource texture = frame.lockTextureSource(); 68227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks texture.generateMipmaps(); 69227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks frame.unlock(); 70227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 71227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 72227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public static void setTextureParameter(FrameImage2D frame, int param, int value) { 73227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks TextureSource texture = frame.lockTextureSource(); 74227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks texture.setParameter(param, value); 75227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks frame.unlock(); 76227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 77227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 78227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks} 79