1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H 18 #define SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 /* 25 * If the HAL needs to create service threads to handle graphics related 26 * tasks, these threads need to run at HAL_PRIORITY_URGENT_DISPLAY priority 27 * if they can block the main rendering thread in any way. 28 * 29 * the priority of the current thread can be set with: 30 * 31 * #include <sys/resource.h> 32 * setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY); 33 * 34 */ 35 36 #define HAL_PRIORITY_URGENT_DISPLAY (-8) 37 38 /** 39 * pixel format definitions 40 */ 41 42 enum { 43 HAL_PIXEL_FORMAT_RGBA_8888 = 1, 44 HAL_PIXEL_FORMAT_RGBX_8888 = 2, 45 HAL_PIXEL_FORMAT_RGB_888 = 3, 46 HAL_PIXEL_FORMAT_RGB_565 = 4, 47 HAL_PIXEL_FORMAT_BGRA_8888 = 5, 48 HAL_PIXEL_FORMAT_RGBA_5551 = 6, 49 HAL_PIXEL_FORMAT_RGBA_4444 = 7, 50 51 /* 0x8 - 0xFF range unavailable */ 52 53 /* 54 * 0x100 - 0x1FF 55 * 56 * This range is reserved for pixel formats that are specific to the HAL 57 * implementation. Implementations can use any value in this range to 58 * communicate video pixel formats between their HAL modules. These formats 59 * must not have an alpha channel. Additionally, an EGLimage created from a 60 * gralloc buffer of one of these formats must be supported for use with the 61 * GL_OES_EGL_image_external OpenGL ES extension. 62 */ 63 64 /* 65 * Android YUV format: 66 * 67 * This format is exposed outside of the HAL to software decoders and 68 * applications. EGLImageKHR must support it in conjunction with the 69 * OES_EGL_image_external extension. 70 * 71 * YV12 is a 4:2:0 YCrCb planar format comprised of a WxH Y plane followed 72 * by (W/2) x (H/2) Cr and Cb planes. 73 * 74 * This format assumes 75 * - an even width 76 * - an even height 77 * - a horizontal stride multiple of 16 pixels 78 * - a vertical stride equal to the height 79 * 80 * y_size = stride * height 81 * c_size = ALIGN(stride/2, 16) * height/2 82 * size = y_size + c_size * 2 83 * cr_offset = y_size 84 * cb_offset = y_size + c_size 85 * 86 */ 87 HAL_PIXEL_FORMAT_YV12 = 0x32315659, // YCrCb 4:2:0 Planar 88 89 90 91 /* Legacy formats (deprecated), used by ImageFormat.java */ 92 HAL_PIXEL_FORMAT_YCbCr_422_SP = 0x10, // NV16 93 HAL_PIXEL_FORMAT_YCrCb_420_SP = 0x11, // NV21 94 HAL_PIXEL_FORMAT_YCbCr_422_I = 0x14, // YUY2 95 }; 96 97 98 /** 99 * Transformation definitions 100 * 101 * IMPORTANT NOTE: 102 * HAL_TRANSFORM_ROT_90 is applied CLOCKWISE and AFTER HAL_TRANSFORM_FLIP_{H|V}. 103 * 104 */ 105 106 enum { 107 /* flip source image horizontally (around the vertical axis) */ 108 HAL_TRANSFORM_FLIP_H = 0x01, 109 /* flip source image vertically (around the horizontal axis)*/ 110 HAL_TRANSFORM_FLIP_V = 0x02, 111 /* rotate source image 90 degrees clockwise */ 112 HAL_TRANSFORM_ROT_90 = 0x04, 113 /* rotate source image 180 degrees */ 114 HAL_TRANSFORM_ROT_180 = 0x03, 115 /* rotate source image 270 degrees clockwise */ 116 HAL_TRANSFORM_ROT_270 = 0x07, 117 }; 118 119 #ifdef __cplusplus 120 } 121 #endif 122 123 #endif /* SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H */ 124