271 lines
8.9 KiB
C
271 lines
8.9 KiB
C
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H
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#define SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H
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#include <stddef.h>
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#include <stdint.h>
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/*
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* Some of the enums are now defined in HIDL in hardware/interfaces and are
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* generated.
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*/
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#include "graphics-base.h"
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#include "graphics-sw.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* for compatibility */
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#define HAL_PIXEL_FORMAT_YCbCr_420_888 HAL_PIXEL_FORMAT_YCBCR_420_888
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#define HAL_PIXEL_FORMAT_YCbCr_422_SP HAL_PIXEL_FORMAT_YCBCR_422_SP
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#define HAL_PIXEL_FORMAT_YCrCb_420_SP HAL_PIXEL_FORMAT_YCRCB_420_SP
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#define HAL_PIXEL_FORMAT_YCbCr_422_I HAL_PIXEL_FORMAT_YCBCR_422_I
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typedef android_pixel_format_t android_pixel_format;
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typedef android_transform_t android_transform;
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typedef android_dataspace_t android_dataspace;
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typedef android_color_mode_t android_color_mode;
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typedef android_color_transform_t android_color_transform;
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typedef android_hdr_t android_hdr;
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/*
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* If the HAL needs to create service threads to handle graphics related
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* tasks, these threads need to run at HAL_PRIORITY_URGENT_DISPLAY priority
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* if they can block the main rendering thread in any way.
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*
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* the priority of the current thread can be set with:
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*
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* #include <sys/resource.h>
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* setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);
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*
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*/
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#define HAL_PRIORITY_URGENT_DISPLAY (-8)
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/*
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* Structure for describing YCbCr formats for consumption by applications.
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* This is used with HAL_PIXEL_FORMAT_YCbCr_*.
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*
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* Buffer chroma subsampling is defined in the format.
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* e.g. HAL_PIXEL_FORMAT_YCbCr_420_888 has subsampling 4:2:0.
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*
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* Buffers must have a byte aligned channel depth or a byte aligned packed
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* channel depth (e.g. 10 bits packed into 16 bits for
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* HAL_PIXEL_FORMAT_YCbCr_P010).
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*
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* y, cb, and cr point to the first byte of their respective planes.
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*
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* Stride describes the distance in bytes from the first value of one row of
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* the image to the first value of the next row. It includes the width of the
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* image plus padding.
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* ystride is the stride of the luma plane.
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* cstride is the stride of the chroma planes.
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*
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* chroma_step is the distance in bytes from one chroma pixel value to the
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* next. This is `2 * channel depth` bytes for semiplanar (because chroma
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* values are interleaved) and `1 * channel depth` bytes for planar.
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*/
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struct android_ycbcr {
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void *y;
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void *cb;
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void *cr;
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size_t ystride;
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size_t cstride;
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size_t chroma_step;
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/** reserved for future use, set to 0 by gralloc's (*lock_ycbcr)() */
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uint32_t reserved[8];
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};
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/*
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* Structures for describing flexible YUVA/RGBA formats for consumption by
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* applications. Such flexible formats contain a plane for each component (e.g.
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* red, green, blue), where each plane is laid out in a grid-like pattern
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* occupying unique byte addresses and with consistent byte offsets between
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* neighboring pixels.
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*
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* The android_flex_layout structure is used with any pixel format that can be
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* represented by it, such as:
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* - HAL_PIXEL_FORMAT_YCbCr_*_888
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* - HAL_PIXEL_FORMAT_FLEX_RGB*_888
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* - HAL_PIXEL_FORMAT_RGB[AX]_888[8],BGRA_8888,RGB_888
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* - HAL_PIXEL_FORMAT_YV12,Y8,Y16,YCbCr_422_SP/I,YCrCb_420_SP
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* - even implementation defined formats that can be represented by
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* the structures
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*
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* Vertical increment (aka. row increment or stride) describes the distance in
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* bytes from the first pixel of one row to the first pixel of the next row
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* (below) for the component plane. This can be negative.
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*
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* Horizontal increment (aka. column or pixel increment) describes the distance
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* in bytes from one pixel to the next pixel (to the right) on the same row for
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* the component plane. This can be negative.
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*
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* Each plane can be subsampled either vertically or horizontally by
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* a power-of-two factor.
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*
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* The bit-depth of each component can be arbitrary, as long as the pixels are
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* laid out on whole bytes, in native byte-order, using the most significant
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* bits of each unit.
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*/
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typedef enum android_flex_component {
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/* luma */
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FLEX_COMPONENT_Y = 1 << 0,
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/* chroma blue */
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FLEX_COMPONENT_Cb = 1 << 1,
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/* chroma red */
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FLEX_COMPONENT_Cr = 1 << 2,
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/* red */
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FLEX_COMPONENT_R = 1 << 10,
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/* green */
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FLEX_COMPONENT_G = 1 << 11,
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/* blue */
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FLEX_COMPONENT_B = 1 << 12,
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/* alpha */
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FLEX_COMPONENT_A = 1 << 30,
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} android_flex_component_t;
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typedef struct android_flex_plane {
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/* pointer to the first byte of the top-left pixel of the plane. */
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uint8_t *top_left;
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android_flex_component_t component;
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/* bits allocated for the component in each pixel. Must be a positive
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multiple of 8. */
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int32_t bits_per_component;
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/* number of the most significant bits used in the format for this
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component. Must be between 1 and bits_per_component, inclusive. */
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int32_t bits_used;
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/* horizontal increment */
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int32_t h_increment;
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/* vertical increment */
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int32_t v_increment;
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/* horizontal subsampling. Must be a positive power of 2. */
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int32_t h_subsampling;
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/* vertical subsampling. Must be a positive power of 2. */
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int32_t v_subsampling;
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} android_flex_plane_t;
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typedef enum android_flex_format {
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/* not a flexible format */
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FLEX_FORMAT_INVALID = 0x0,
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FLEX_FORMAT_Y = FLEX_COMPONENT_Y,
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FLEX_FORMAT_YCbCr = FLEX_COMPONENT_Y | FLEX_COMPONENT_Cb | FLEX_COMPONENT_Cr,
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FLEX_FORMAT_YCbCrA = FLEX_FORMAT_YCbCr | FLEX_COMPONENT_A,
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FLEX_FORMAT_RGB = FLEX_COMPONENT_R | FLEX_COMPONENT_G | FLEX_COMPONENT_B,
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FLEX_FORMAT_RGBA = FLEX_FORMAT_RGB | FLEX_COMPONENT_A,
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} android_flex_format_t;
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typedef struct android_flex_layout {
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/* the kind of flexible format */
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android_flex_format_t format;
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/* number of planes; 0 for FLEX_FORMAT_INVALID */
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uint32_t num_planes;
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/* a plane for each component; ordered in increasing component value order.
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E.g. FLEX_FORMAT_RGBA maps 0 -> R, 1 -> G, etc.
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Can be NULL for FLEX_FORMAT_INVALID */
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android_flex_plane_t *planes;
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} android_flex_layout_t;
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/**
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* Structure used to define depth point clouds for format HAL_PIXEL_FORMAT_BLOB
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* with dataSpace value of HAL_DATASPACE_DEPTH.
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* When locking a native buffer of the above format and dataSpace value,
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* the vaddr pointer can be cast to this structure.
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*
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* A variable-length list of (x,y,z, confidence) 3D points, as floats. (x, y,
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* z) represents a measured point's position, with the coordinate system defined
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* by the data source. Confidence represents the estimated likelihood that this
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* measurement is correct. It is between 0.f and 1.f, inclusive, with 1.f ==
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* 100% confidence.
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*
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* num_points is the number of points in the list
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*
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* xyz_points is the flexible array of floating-point values.
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* It contains (num_points) * 4 floats.
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*
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* For example:
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* android_depth_points d = get_depth_buffer();
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* struct {
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* float x; float y; float z; float confidence;
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* } firstPoint, lastPoint;
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*
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* firstPoint.x = d.xyzc_points[0];
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* firstPoint.y = d.xyzc_points[1];
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* firstPoint.z = d.xyzc_points[2];
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* firstPoint.confidence = d.xyzc_points[3];
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* lastPoint.x = d.xyzc_points[(d.num_points - 1) * 4 + 0];
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* lastPoint.y = d.xyzc_points[(d.num_points - 1) * 4 + 1];
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* lastPoint.z = d.xyzc_points[(d.num_points - 1) * 4 + 2];
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* lastPoint.confidence = d.xyzc_points[(d.num_points - 1) * 4 + 3];
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*/
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struct android_depth_points {
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uint32_t num_points;
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/** reserved for future use, set to 0 by gralloc's (*lock)() */
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uint32_t reserved[8];
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#if defined(__clang__)
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wc99-extensions"
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#endif
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float xyzc_points[];
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#if defined(__clang__)
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#pragma clang diagnostic pop
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#endif
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};
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/**
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* These structures are used to define the reference display's
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* capabilities for HDR content. Display engine can use this
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* to better tone map content to user's display.
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* Color is defined in CIE XYZ coordinates
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*/
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struct android_xy_color {
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float x;
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float y;
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};
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struct android_smpte2086_metadata {
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struct android_xy_color displayPrimaryRed;
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struct android_xy_color displayPrimaryGreen;
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struct android_xy_color displayPrimaryBlue;
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struct android_xy_color whitePoint;
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float maxLuminance;
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float minLuminance;
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};
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struct android_cta861_3_metadata {
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float maxContentLightLevel;
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float maxFrameAverageLightLevel;
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H */
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