michael@0: /*
michael@0:  * Copyright (C) 2011 The Android Open Source Project
michael@0:  *
michael@0:  * Licensed under the Apache License, Version 2.0 (the "License");
michael@0:  * you may not use this file except in compliance with the License.
michael@0:  * You may obtain a copy of the License at
michael@0:  *
michael@0:  *      http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing, software
michael@0:  * distributed under the License is distributed on an "AS IS" BASIS,
michael@0:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
michael@0:  * See the License for the specific language governing permissions and
michael@0:  * limitations under the License.
michael@0:  */
michael@0: 
michael@0: #ifndef SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H
michael@0: #define SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H
michael@0: 
michael@0: #ifdef __cplusplus
michael@0: extern "C" {
michael@0: #endif
michael@0: 
michael@0: /*
michael@0:  * If the HAL needs to create service threads to handle graphics related
michael@0:  * tasks, these threads need to run at HAL_PRIORITY_URGENT_DISPLAY priority
michael@0:  * if they can block the main rendering thread in any way.
michael@0:  *
michael@0:  * the priority of the current thread can be set with:
michael@0:  *
michael@0:  *      #include <sys/resource.h>
michael@0:  *      setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);
michael@0:  *
michael@0:  */
michael@0: 
michael@0: #define HAL_PRIORITY_URGENT_DISPLAY     (-8)
michael@0: 
michael@0: /**
michael@0:  * pixel format definitions
michael@0:  */
michael@0: 
michael@0: enum {
michael@0:     HAL_PIXEL_FORMAT_RGBA_8888          = 1,
michael@0:     HAL_PIXEL_FORMAT_RGBX_8888          = 2,
michael@0:     HAL_PIXEL_FORMAT_RGB_888            = 3,
michael@0:     HAL_PIXEL_FORMAT_RGB_565            = 4,
michael@0:     HAL_PIXEL_FORMAT_BGRA_8888          = 5,
michael@0:     HAL_PIXEL_FORMAT_RGBA_5551          = 6,
michael@0:     HAL_PIXEL_FORMAT_RGBA_4444          = 7,
michael@0: 
michael@0:     /* 0x8 - 0xFF range unavailable */
michael@0: 
michael@0:     /*
michael@0:      * 0x100 - 0x1FF
michael@0:      *
michael@0:      * This range is reserved for pixel formats that are specific to the HAL
michael@0:      * implementation.  Implementations can use any value in this range to
michael@0:      * communicate video pixel formats between their HAL modules.  These formats
michael@0:      * must not have an alpha channel.  Additionally, an EGLimage created from a
michael@0:      * gralloc buffer of one of these formats must be supported for use with the
michael@0:      * GL_OES_EGL_image_external OpenGL ES extension.
michael@0:      */
michael@0: 
michael@0:     /*
michael@0:      * Android YUV format:
michael@0:      *
michael@0:      * This format is exposed outside of the HAL to software decoders and
michael@0:      * applications.  EGLImageKHR must support it in conjunction with the
michael@0:      * OES_EGL_image_external extension.
michael@0:      *
michael@0:      * YV12 is a 4:2:0 YCrCb planar format comprised of a WxH Y plane followed
michael@0:      * by (W/2) x (H/2) Cr and Cb planes.
michael@0:      *
michael@0:      * This format assumes
michael@0:      * - an even width
michael@0:      * - an even height
michael@0:      * - a horizontal stride multiple of 16 pixels
michael@0:      * - a vertical stride equal to the height
michael@0:      *
michael@0:      *   y_size = stride * height
michael@0:      *   c_size = ALIGN(stride/2, 16) * height/2
michael@0:      *   size = y_size + c_size * 2
michael@0:      *   cr_offset = y_size
michael@0:      *   cb_offset = y_size + c_size
michael@0:      *
michael@0:      */
michael@0:     HAL_PIXEL_FORMAT_YV12   = 0x32315659, // YCrCb 4:2:0 Planar
michael@0: 
michael@0: 
michael@0: 
michael@0:     /* Legacy formats (deprecated), used by ImageFormat.java */
michael@0:     HAL_PIXEL_FORMAT_YCbCr_422_SP       = 0x10, // NV16
michael@0:     HAL_PIXEL_FORMAT_YCrCb_420_SP       = 0x11, // NV21
michael@0:     HAL_PIXEL_FORMAT_YCbCr_422_I        = 0x14, // YUY2
michael@0: };
michael@0: 
michael@0: 
michael@0: /**
michael@0:  * Transformation definitions
michael@0:  *
michael@0:  * IMPORTANT NOTE:
michael@0:  * HAL_TRANSFORM_ROT_90 is applied CLOCKWISE and AFTER HAL_TRANSFORM_FLIP_{H|V}.
michael@0:  *
michael@0:  */
michael@0: 
michael@0: enum {
michael@0:     /* flip source image horizontally (around the vertical axis) */
michael@0:     HAL_TRANSFORM_FLIP_H    = 0x01,
michael@0:     /* flip source image vertically (around the horizontal axis)*/
michael@0:     HAL_TRANSFORM_FLIP_V    = 0x02,
michael@0:     /* rotate source image 90 degrees clockwise */
michael@0:     HAL_TRANSFORM_ROT_90    = 0x04,
michael@0:     /* rotate source image 180 degrees */
michael@0:     HAL_TRANSFORM_ROT_180   = 0x03,
michael@0:     /* rotate source image 270 degrees clockwise */
michael@0:     HAL_TRANSFORM_ROT_270   = 0x07,
michael@0: };
michael@0: 
michael@0: #ifdef __cplusplus
michael@0: }
michael@0: #endif
michael@0: 
michael@0: #endif /* SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H */