* Copyright (c) 2021 Rockchip Electronics Co., Ltd.
* 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.
*/
* File: platform_gralloc4.h
*
* Desc: 声明对 buffer_handle_t 实例的 get metadata, import_buffer/free_buffer, lock_buffer/unlock_buffer 等接口.
* 这些接口都将基于 IMapper 4.0 (gralloc 4.0) 实现.
*
* -----------------------------------------------------------------------------------
* < 习语 和 缩略语 > :
*
* -----------------------------------------------------------------------------------
* Usage:
*
* Note:
*
* Author: ChenZhen
*
* Log:
* init.
----Fri Aug 28 10:10:14 2020
*
* --------------------------------------------------------------------------------------------------------
*/
#ifndef __PLATFORM_GRALLOC4_H__
#define __PLATFORM_GRALLOC4_H__
* Include Files
* ---------------------------------------------------------------------------------------------------------
*/
#include <linux/kernel.h>
#include <stdint.h>
#include <cutils/native_handle.h>
#include <utils/Errors.h>
#include <ui/PixelFormat.h>
* Macros Definition
* ---------------------------------------------------------------------------------------------------------
*/
namespace gralloc4 {
* Types and Structures Definition
* ---------------------------------------------------------------------------------------------------------
*/
* Global Functions' Prototype
* ---------------------------------------------------------------------------------------------------------
*/
* 获取 'handle' 引用的 graphic_buffer 的 internal_format.
*/
uint64_t get_internal_format(buffer_handle_t handle);
int get_width(buffer_handle_t handle, uint64_t *width);
int get_height(buffer_handle_t handle, uint64_t *height);
int get_pixel_stride(buffer_handle_t handle, int *pixel_stride);
int get_byte_stride(buffer_handle_t handle, int *byte_stride);
int get_format_requested(buffer_handle_t handle, int *format_requested);
int get_usage(buffer_handle_t handle, uint64_t *usage);
int get_allocation_size(buffer_handle_t handle, uint64_t *usage);
int get_share_fd(buffer_handle_t handle, int *share_fd);
void unlock(buffer_handle_t bufferHandle);
void freeBuffer(buffer_handle_t handle);
* Inline Functions Implementation
* ---------------------------------------------------------------------------------------------------------
*/
}
#endif