| /* |
| * Copyright (C) 2011 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. |
| */ |
| |
| #ifndef SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H |
| #define SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H |
| |
| #include <stdint.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* |
| * If the HAL needs to create service threads to handle graphics related |
| * tasks, these threads need to run at HAL_PRIORITY_URGENT_DISPLAY priority |
| * if they can block the main rendering thread in any way. |
| * |
| * the priority of the current thread can be set with: |
| * |
| * #include <sys/resource.h> |
| * setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY); |
| * |
| */ |
| |
| #define HAL_PRIORITY_URGENT_DISPLAY (-8) |
| |
| /** |
| * pixel format definitions |
| */ |
| |
| enum { |
| /* |
| * "linear" color pixel formats: |
| * |
| * The pixel formats below contain sRGB data but are otherwise treated |
| * as linear formats, i.e.: no special operation is performed when |
| * reading or writing into a buffer in one of these formats |
| */ |
| HAL_PIXEL_FORMAT_RGBA_8888 = 1, |
| HAL_PIXEL_FORMAT_RGBX_8888 = 2, |
| HAL_PIXEL_FORMAT_RGB_888 = 3, |
| HAL_PIXEL_FORMAT_RGB_565 = 4, |
| HAL_PIXEL_FORMAT_BGRA_8888 = 5, |
| |
| /* |
| * sRGB color pixel formats: |
| * |
| * The red, green and blue components are stored in sRGB space, and converted |
| * to linear space when read, using the standard sRGB to linear equation: |
| * |
| * Clinear = Csrgb / 12.92 for Csrgb <= 0.04045 |
| * = (Csrgb + 0.055 / 1.055)^2.4 for Csrgb > 0.04045 |
| * |
| * When written the inverse transformation is performed: |
| * |
| * Csrgb = 12.92 * Clinear for Clinear <= 0.0031308 |
| * = 1.055 * Clinear^(1/2.4) - 0.055 for Clinear > 0.0031308 |
| * |
| * |
| * The alpha component, if present, is always stored in linear space and |
| * is left unmodified when read or written. |
| * |
| */ |
| HAL_PIXEL_FORMAT_sRGB_A_8888 = 0xC, |
| HAL_PIXEL_FORMAT_sRGB_X_8888 = 0xD, |
| |
| /* |
| * 0x100 - 0x1FF |
| * |
| * This range is reserved for pixel formats that are specific to the HAL |
| * implementation. Implementations can use any value in this range to |
| * communicate video pixel formats between their HAL modules. These formats |
| * must not have an alpha channel. Additionally, an EGLimage created from a |
| * gralloc buffer of one of these formats must be supported for use with the |
| * GL_OES_EGL_image_external OpenGL ES extension. |
| */ |
| |
| /* |
| * Android YUV format: |
| * |
| * This format is exposed outside of the HAL to software decoders and |
| * applications. EGLImageKHR must support it in conjunction with the |
| * OES_EGL_image_external extension. |
| * |
| * YV12 is a 4:2:0 YCrCb planar format comprised of a WxH Y plane followed |
| * by (W/2) x (H/2) Cr and Cb planes. |
| * |
| * This format assumes |
| * - an even width |
| * - an even height |
| * - a horizontal stride multiple of 16 pixels |
| * - a vertical stride equal to the height |
| * |
| * y_size = stride * height |
| * c_stride = ALIGN(stride/2, 16) |
| * c_size = c_stride * height/2 |
| * size = y_size + c_size * 2 |
| * cr_offset = y_size |
| * cb_offset = y_size + c_size |
| * |
| */ |
| HAL_PIXEL_FORMAT_YV12 = 0x32315659, // YCrCb 4:2:0 Planar |
| |
| |
| /* |
| * Android Y8 format: |
| * |
| * This format is exposed outside of the HAL to the framework. |
| * The expected gralloc usage flags are SW_* and HW_CAMERA_*, |
| * and no other HW_ flags will be used. |
| * |
| * Y8 is a YUV planar format comprised of a WxH Y plane, |
| * with each pixel being represented by 8 bits. |
| * |
| * It is equivalent to just the Y plane from YV12. |
| * |
| * This format assumes |
| * - an even width |
| * - an even height |
| * - a horizontal stride multiple of 16 pixels |
| * - a vertical stride equal to the height |
| * |
| * size = stride * height |
| * |
| */ |
| HAL_PIXEL_FORMAT_Y8 = 0x20203859, |
| |
| /* |
| * Android Y16 format: |
| * |
| * This format is exposed outside of the HAL to the framework. |
| * The expected gralloc usage flags are SW_* and HW_CAMERA_*, |
| * and no other HW_ flags will be used. |
| * |
| * Y16 is a YUV planar format comprised of a WxH Y plane, |
| * with each pixel being represented by 16 bits. |
| * |
| * It is just like Y8, but has double the bits per pixel (little endian). |
| * |
| * This format assumes |
| * - an even width |
| * - an even height |
| * - a horizontal stride multiple of 16 pixels |
| * - a vertical stride equal to the height |
| * - strides are specified in pixels, not in bytes |
| * |
| * size = stride * height * 2 |
| * |
| */ |
| HAL_PIXEL_FORMAT_Y16 = 0x20363159, |
| |
| /* |
| * Android RAW sensor format: |
| * |
| * This format is exposed outside of the camera HAL to applications. |
| * |
| * RAW_SENSOR is a single-channel, 16-bit, little endian format, typically |
| * representing raw Bayer-pattern images from an image sensor, with minimal |
| * processing. |
| * |
| * The exact pixel layout of the data in the buffer is sensor-dependent, and |
| * needs to be queried from the camera device. |
| * |
| * Generally, not all 16 bits are used; more common values are 10 or 12 |
| * bits. If not all bits are used, the lower-order bits are filled first. |
| * All parameters to interpret the raw data (black and white points, |
| * color space, etc) must be queried from the camera device. |
| * |
| * This format assumes |
| * - an even width |
| * - an even height |
| * - a horizontal stride multiple of 16 pixels |
| * - a vertical stride equal to the height |
| * - strides are specified in pixels, not in bytes |
| * |
| * size = stride * height * 2 |
| * |
| * This format must be accepted by the gralloc module when used with the |
| * following usage flags: |
| * - GRALLOC_USAGE_HW_CAMERA_* |
| * - GRALLOC_USAGE_SW_* |
| * - GRALLOC_USAGE_RENDERSCRIPT |
| */ |
| HAL_PIXEL_FORMAT_RAW16 = 0x20, |
| HAL_PIXEL_FORMAT_RAW_SENSOR = 0x20, // TODO(rubenbrunk): Remove RAW_SENSOR. |
| |
| /* |
| * Android RAW10 format: |
| * |
| * This format is exposed outside of the camera HAL to applications. |
| * |
| * RAW10 is a single-channel, 10-bit per pixel, densely packed in each row, |
| * unprocessed format, usually representing raw Bayer-pattern images coming from |
| * an image sensor. |
| * |
| * In an image buffer with this format, starting from the first pixel of each |
| * row, each 4 consecutive pixels are packed into 5 bytes (40 bits). Each one |
| * of the first 4 bytes contains the top 8 bits of each pixel, The fifth byte |
| * contains the 2 least significant bits of the 4 pixels, the exact layout data |
| * for each 4 consecutive pixels is illustrated below (Pi[j] stands for the jth |
| * bit of the ith pixel): |
| * |
| * bit 7 bit 0 |
| * =====|=====|=====|=====|=====|=====|=====|=====| |
| * Byte 0: |P0[9]|P0[8]|P0[7]|P0[6]|P0[5]|P0[4]|P0[3]|P0[2]| |
| * |-----|-----|-----|-----|-----|-----|-----|-----| |
| * Byte 1: |P1[9]|P1[8]|P1[7]|P1[6]|P1[5]|P1[4]|P1[3]|P1[2]| |
| * |-----|-----|-----|-----|-----|-----|-----|-----| |
| * Byte 2: |P2[9]|P2[8]|P2[7]|P2[6]|P2[5]|P2[4]|P2[3]|P2[2]| |
| * |-----|-----|-----|-----|-----|-----|-----|-----| |
| * Byte 3: |P3[9]|P3[8]|P3[7]|P3[6]|P3[5]|P3[4]|P3[3]|P3[2]| |
| * |-----|-----|-----|-----|-----|-----|-----|-----| |
| * Byte 4: |P3[1]|P3[0]|P2[1]|P2[0]|P1[1]|P1[0]|P0[1]|P0[0]| |
| * =============================================== |
| * |
| * This format assumes |
| * - a width multiple of 4 pixels |
| * - an even height |
| * - a vertical stride equal to the height |
| * - strides are specified in bytes, not in pixels |
| * |
| * size = stride * height |
| * |
| * When stride is equal to width * (10 / 8), there will be no padding bytes at |
| * the end of each row, the entire image data is densely packed. When stride is |
| * larger than width * (10 / 8), padding bytes will be present at the end of each |
| * row (including the last row). |
| * |
| * This format must be accepted by the gralloc module when used with the |
| * following usage flags: |
| * - GRALLOC_USAGE_HW_CAMERA_* |
| * - GRALLOC_USAGE_SW_* |
| * - GRALLOC_USAGE_RENDERSCRIPT |
| */ |
| HAL_PIXEL_FORMAT_RAW10 = 0x25, |
| |
| /* |
| * Android opaque RAW format: |
| * |
| * This format is exposed outside of the camera HAL to applications. |
| * |
| * RAW_OPAQUE is a format for unprocessed raw image buffers coming from an |
| * image sensor. The actual structure of buffers of this format is |
| * implementation-dependent. |
| * |
| * This format must be accepted by the gralloc module when used with the |
| * following usage flags: |
| * - GRALLOC_USAGE_HW_CAMERA_* |
| * - GRALLOC_USAGE_SW_* |
| * - GRALLOC_USAGE_RENDERSCRIPT |
| */ |
| HAL_PIXEL_FORMAT_RAW_OPAQUE = 0x24, |
| |
| /* |
| * Android binary blob graphics buffer format: |
| * |
| * This format is used to carry task-specific data which does not have a |
| * standard image structure. The details of the format are left to the two |
| * endpoints. |
| * |
| * A typical use case is for transporting JPEG-compressed images from the |
| * Camera HAL to the framework or to applications. |
| * |
| * Buffers of this format must have a height of 1, and width equal to their |
| * size in bytes. |
| */ |
| HAL_PIXEL_FORMAT_BLOB = 0x21, |
| |
| /* |
| * Android format indicating that the choice of format is entirely up to the |
| * device-specific Gralloc implementation. |
| * |
| * The Gralloc implementation should examine the usage bits passed in when |
| * allocating a buffer with this format, and it should derive the pixel |
| * format from those usage flags. This format will never be used with any |
| * of the GRALLOC_USAGE_SW_* usage flags. |
| * |
| * If a buffer of this format is to be used as an OpenGL ES texture, the |
| * framework will assume that sampling the texture will always return an |
| * alpha value of 1.0 (i.e. the buffer contains only opaque pixel values). |
| * |
| */ |
| HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED = 0x22, |
| |
| /* |
| * Android flexible YCbCr formats |
| * |
| * This format allows platforms to use an efficient YCbCr/YCrCb buffer |
| * layout, while still describing the buffer layout in a way accessible to |
| * the CPU in a device-independent manner. While called YCbCr, it can be |
| * used to describe formats with either chromatic ordering, as well as |
| * whole planar or semiplanar layouts. |
| * |
| * struct android_ycbcr (below) is the the struct used to describe it. |
| * |
| * This format must be accepted by the gralloc module when |
| * USAGE_HW_CAMERA_WRITE and USAGE_SW_READ_* are set. |
| * |
| * This format is locked for use by gralloc's (*lock_ycbcr) method, and |
| * locking with the (*lock) method will return an error. |
| */ |
| HAL_PIXEL_FORMAT_YCbCr_420_888 = 0x23, |
| |
| /* Legacy formats (deprecated), used by ImageFormat.java */ |
| HAL_PIXEL_FORMAT_YCbCr_422_SP = 0x10, // NV16 |
| HAL_PIXEL_FORMAT_YCrCb_420_SP = 0x11, // NV21 |
| HAL_PIXEL_FORMAT_YCbCr_422_I = 0x14, // YUY2 |
| }; |
| |
| /* |
| * Structure for describing YCbCr formats for consumption by applications. |
| * This is used with HAL_PIXEL_FORMAT_YCbCr_*_888. |
| * |
| * Buffer chroma subsampling is defined in the format. |
| * e.g. HAL_PIXEL_FORMAT_YCbCr_420_888 has subsampling 4:2:0. |
| * |
| * Buffers must have a 8 bit depth. |
| * |
| * @y, @cb, and @cr point to the first byte of their respective planes. |
| * |
| * Stride describes the distance in bytes from the first value of one row of |
| * the image to the first value of the next row. It includes the width of the |
| * image plus padding. |
| * @ystride is the stride of the luma plane. |
| * @cstride is the stride of the chroma planes. |
| * |
| * @chroma_step is the distance in bytes from one chroma pixel value to the |
| * next. This is 2 bytes for semiplanar (because chroma values are interleaved |
| * and each chroma value is one byte) and 1 for planar. |
| */ |
| |
| struct android_ycbcr { |
| void *y; |
| void *cb; |
| void *cr; |
| size_t ystride; |
| size_t cstride; |
| size_t chroma_step; |
| |
| /** reserved for future use, set to 0 by gralloc's (*lock_ycbcr)() */ |
| uint32_t reserved[8]; |
| }; |
| |
| /** |
| * Transformation definitions |
| * |
| * IMPORTANT NOTE: |
| * HAL_TRANSFORM_ROT_90 is applied CLOCKWISE and AFTER HAL_TRANSFORM_FLIP_{H|V}. |
| * |
| */ |
| |
| enum { |
| /* flip source image horizontally (around the vertical axis) */ |
| HAL_TRANSFORM_FLIP_H = 0x01, |
| /* flip source image vertically (around the horizontal axis)*/ |
| HAL_TRANSFORM_FLIP_V = 0x02, |
| /* rotate source image 90 degrees clockwise */ |
| HAL_TRANSFORM_ROT_90 = 0x04, |
| /* rotate source image 180 degrees */ |
| HAL_TRANSFORM_ROT_180 = 0x03, |
| /* rotate source image 270 degrees clockwise */ |
| HAL_TRANSFORM_ROT_270 = 0x07, |
| /* don't use. see system/window.h */ |
| HAL_TRANSFORM_RESERVED = 0x08, |
| }; |
| |
| /** |
| * Colorspace Definitions |
| * ====================== |
| * |
| * Colorspace is the definition of how pixel values should be interpreted. |
| * It includes primaries (including white point) and the transfer |
| * characteristic function, which describes both gamma curve and numeric |
| * range (within the bit depth). |
| */ |
| |
| enum { |
| /* |
| * Arbitrary colorspace with manually defined characteristics. |
| * Colorspace definition must be communicated separately. |
| * |
| * This is used when specifying primaries, transfer characteristics, |
| * etc. separately. |
| * |
| * A typical use case is in video encoding parameters (e.g. for H.264), |
| * where a colorspace can have separately defined primaries, transfer |
| * characteristics, etc. |
| */ |
| HAL_COLORSPACE_ARBITRARY = 0x1, |
| |
| /* |
| * YCbCr Colorspaces |
| * ----------------- |
| * |
| * Primaries are given using (x,y) coordinates in the CIE 1931 definition |
| * of x and y specified by ISO 11664-1. |
| * |
| * Transfer characteristics are the opto-electronic transfer characteristic |
| * at the source as a function of linear optical intensity (luminance). |
| */ |
| |
| /* |
| * JPEG File Interchange Format (JFIF) |
| * |
| * Same model as BT.601-625, but all values (Y, Cb, Cr) range from 0 to 255 |
| * |
| * Transfer characteristic curve: |
| * E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018 |
| * E = 4.500 L, 0.018 > L >= 0 |
| * L - luminance of image 0 <= L <= 1 for conventional colorimetry |
| * E - corresponding electrical signal |
| * |
| * Primaries: x y |
| * green 0.290 0.600 |
| * blue 0.150 0.060 |
| * red 0.640 0.330 |
| * white (D65) 0.3127 0.3290 |
| */ |
| HAL_COLORSPACE_JFIF = 0x101, |
| |
| /* |
| * ITU-R Recommendation 601 (BT.601) - 625-line |
| * |
| * Standard-definition television, 625 Lines (PAL) |
| * |
| * For 8-bit-depth formats: |
| * Luma (Y) samples should range from 16 to 235, inclusive |
| * Chroma (Cb, Cr) samples should range from 16 to 240, inclusive |
| * |
| * For 10-bit-depth formats: |
| * Luma (Y) samples should range from 64 to 940, inclusive |
| * Chroma (Cb, Cr) samples should range from 64 to 960, inclusive |
| * |
| * Transfer characteristic curve: |
| * E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018 |
| * E = 4.500 L, 0.018 > L >= 0 |
| * L - luminance of image 0 <= L <= 1 for conventional colorimetry |
| * E - corresponding electrical signal |
| * |
| * Primaries: x y |
| * green 0.290 0.600 |
| * blue 0.150 0.060 |
| * red 0.640 0.330 |
| * white (D65) 0.3127 0.3290 |
| */ |
| HAL_COLORSPACE_BT601_625 = 0x102, |
| |
| /* |
| * ITU-R Recommendation 601 (BT.601) - 525-line |
| * |
| * Standard-definition television, 525 Lines (NTSC) |
| * |
| * For 8-bit-depth formats: |
| * Luma (Y) samples should range from 16 to 235, inclusive |
| * Chroma (Cb, Cr) samples should range from 16 to 240, inclusive |
| * |
| * For 10-bit-depth formats: |
| * Luma (Y) samples should range from 64 to 940, inclusive |
| * Chroma (Cb, Cr) samples should range from 64 to 960, inclusive |
| * |
| * Transfer characteristic curve: |
| * E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018 |
| * E = 4.500 L, 0.018 > L >= 0 |
| * L - luminance of image 0 <= L <= 1 for conventional colorimetry |
| * E - corresponding electrical signal |
| * |
| * Primaries: x y |
| * green 0.310 0.595 |
| * blue 0.155 0.070 |
| * red 0.630 0.340 |
| * white (D65) 0.3127 0.3290 |
| */ |
| HAL_COLORSPACE_BT601_525 = 0x103, |
| |
| /* |
| * ITU-R Recommendation 709 (BT.709) |
| * |
| * High-definition television |
| * |
| * For 8-bit-depth formats: |
| * Luma (Y) samples should range from 16 to 235, inclusive |
| * Chroma (Cb, Cr) samples should range from 16 to 240, inclusive |
| * |
| * For 10-bit-depth formats: |
| * Luma (Y) samples should range from 64 to 940, inclusive |
| * Chroma (Cb, Cr) samples should range from 64 to 960, inclusive |
| * |
| * Primaries: x y |
| * green 0.300 0.600 |
| * blue 0.150 0.060 |
| * red 0.640 0.330 |
| * white (D65) 0.3127 0.3290 |
| */ |
| HAL_COLORSPACE_BT709 = 0x104, |
| }; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H */ |
