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149 lines
4.3 KiB
149 lines
4.3 KiB
/*
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* Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
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* Copyright (C) 2010-2011 LunarG Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/*
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* 定义和 gralloc_drm_device 内部具体实现有关的类型 等.
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*/
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#ifndef _GRALLOC_DRM_PRIV_H_
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#define _GRALLOC_DRM_PRIV_H_
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#include <pthread.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include "gralloc_drm_handle.h"
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#define GET_VPU_INTO_FROM_HEAD 0 //zxl: 0:get vpu info from head of handle base 1:get vpu info from end of handle base
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* .DP : gralloc_drm_device_t, gralloc_drm_t
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* 封装了对 drm_dev 的 fd, 以及 抽象了 功能接口.
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*/
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struct gralloc_drm_t {
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/* initialized by gralloc_drm_create */
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int fd; // fd_of_drm_dev
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/* 指向 'this' driver_of_gralloc_drm_device_t 实例. */
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struct gralloc_drm_drv_t *drv;
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};
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/**
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* .DP : drm_gralloc_module_t
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* drm_gralloc 对 gralloc_module_t 的具体实现, 即 drm_gralloc_module_t.
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*/
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struct drm_module_t {
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gralloc_module_t base;
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pthread_mutex_t mutex;
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/** gralloc_drm_device. */
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struct gralloc_drm_t *drm;
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#ifdef __cplusplus
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/* default constructor */
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drm_module_t();
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#endif
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#if RK_DRM_GRALLOC
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volatile int32_t refcount;
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#endif
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};
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/*
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* .DP : driver_of_gralloc_drm_device_t
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* 定义了对 gralloc_drm_bo_t 实例的一系列操作方法.
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*/
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struct gralloc_drm_drv_t {
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/* destroy the driver */
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void (*destroy)(struct gralloc_drm_drv_t *drv);
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/* allocate or import a bo
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* .KP : "alloc" 同时有 import 的隐式的语义, 这不好.
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*/
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struct gralloc_drm_bo_t *(*alloc)(struct gralloc_drm_drv_t *drv,
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struct gralloc_drm_handle_t *handle);
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/* free a bo */
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void (*free)(struct gralloc_drm_drv_t *drv,
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struct gralloc_drm_bo_t *bo);
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/* map a bo for CPU access */
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int (*map)(struct gralloc_drm_drv_t *drv,
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struct gralloc_drm_bo_t *bo,
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int x, int y, int w, int h, int enable_write, void **addr);
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/* unmap a bo */
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void (*unmap)(struct gralloc_drm_drv_t *drv,
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struct gralloc_drm_bo_t *bo);
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/* query component offsets, strides and handles for a format */
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void (*resolve_format)(struct gralloc_drm_drv_t *drv,
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struct gralloc_drm_bo_t *bo,
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uint32_t *pitches, uint32_t *offsets, uint32_t *handles);
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};
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/**
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* .DP : gralloc_drm_buffer_obj_t, gralloc_drm_bo_t.
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*/
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struct gralloc_drm_bo_t {
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struct gralloc_drm_t *drm;
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struct gralloc_drm_handle_t *handle;
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int imported; /* the handle is from a remote proces when true */
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int fb_handle; /* the GEM handle of the bo */
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int fb_id; /* the fb id */
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/**
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* 当前 bo 实例被 lock 的次数.
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*/
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int lock_count;
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/**
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* 对当前 bo 实例的所有 lock 操作的 usage 的 bits_or.
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*/
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int locked_for;
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unsigned int refcount;
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};
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void drm_gem_rockchip_free(struct gralloc_drm_drv_t *drv, struct gralloc_drm_bo_t *bo);
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struct gralloc_drm_drv_t *gralloc_drm_drv_create_for_pipe(int fd, const char *name);
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struct gralloc_drm_drv_t *gralloc_drm_drv_create_for_intel(int fd);
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struct gralloc_drm_drv_t *gralloc_drm_drv_create_for_radeon(int fd);
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/**
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* 创建并返回 driver_of_rk_drm_device.
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* @param fd
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* fd_of_drm_dev
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*/
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struct gralloc_drm_drv_t *gralloc_drm_drv_create_for_rockchip(int fd);
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struct gralloc_drm_drv_t *gralloc_drm_drv_create_for_nouveau(int fd);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _GRALLOC_DRM_PRIV_H_ */
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