gralloc.h revision 4b560d5563ee4699cd24938c2f13b4a416408273
1a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian/* 2a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * Copyright (C) 2008 The Android Open Source Project 3a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * 4a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * Licensed under the Apache License, Version 2.0 (the "License"); 5a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * you may not use this file except in compliance with the License. 6a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * You may obtain a copy of the License at 7a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * 8a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * http://www.apache.org/licenses/LICENSE-2.0 9a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * 10a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * Unless required by applicable law or agreed to in writing, software 11a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * distributed under the License is distributed on an "AS IS" BASIS, 12a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * See the License for the specific language governing permissions and 14a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * limitations under the License. 15a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian */ 16a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 17a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 18a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian#ifndef ANDROID_GRALLOC_INTERFACE_H 19a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian#define ANDROID_GRALLOC_INTERFACE_H 20a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 2133c0fe022e166007547d9c7390e7e6dbba5122e7Iliyan Malchev#include <system/window.h> 22a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian#include <hardware/hardware.h> 23a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 24a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian#include <stdint.h> 25a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian#include <sys/cdefs.h> 26a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian#include <sys/types.h> 27a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 285337b102898cfd48eda7215df15baaf3bc96521fMathias Agopian#include <cutils/native_handle.h> 295337b102898cfd48eda7215df15baaf3bc96521fMathias Agopian 305337b102898cfd48eda7215df15baaf3bc96521fMathias Agopian#include <hardware/hardware.h> 315337b102898cfd48eda7215df15baaf3bc96521fMathias Agopian#include <hardware/fb.h> 325337b102898cfd48eda7215df15baaf3bc96521fMathias Agopian 33a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian__BEGIN_DECLS 34a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 35e99520400f228e45b1feff28eb4105b8e5599196Erik Gilling#define GRALLOC_API_VERSION 1 36e99520400f228e45b1feff28eb4105b8e5599196Erik Gilling 37a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian/** 38a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * The id of this module 39a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian */ 40a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian#define GRALLOC_HARDWARE_MODULE_ID "gralloc" 41a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 42a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian/** 43a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * Name of the graphics device to open 44a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian */ 45a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 46a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian#define GRALLOC_HARDWARE_GPU0 "gpu0" 47a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 48a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopianenum { 49a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* buffer is never read in software */ 50988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian GRALLOC_USAGE_SW_READ_NEVER = 0x00000000, 51a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* buffer is rarely read in software */ 52a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian GRALLOC_USAGE_SW_READ_RARELY = 0x00000002, 53a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* buffer is often read in software */ 54a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian GRALLOC_USAGE_SW_READ_OFTEN = 0x00000003, 55a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* mask for the software read values */ 56a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian GRALLOC_USAGE_SW_READ_MASK = 0x0000000F, 57a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 58a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* buffer is never written in software */ 59988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian GRALLOC_USAGE_SW_WRITE_NEVER = 0x00000000, 60a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* buffer is never written in software */ 61a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian GRALLOC_USAGE_SW_WRITE_RARELY = 0x00000020, 62a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* buffer is never written in software */ 63a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian GRALLOC_USAGE_SW_WRITE_OFTEN = 0x00000030, 64a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* mask for the software write values */ 65a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian GRALLOC_USAGE_SW_WRITE_MASK = 0x000000F0, 66a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 67a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* buffer will be used as an OpenGL ES texture */ 68a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian GRALLOC_USAGE_HW_TEXTURE = 0x00000100, 69a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* buffer will be used as an OpenGL ES render target */ 70a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian GRALLOC_USAGE_HW_RENDER = 0x00000200, 71a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* buffer will be used by the 2D hardware blitter */ 72aabb70292351f231bfd4daae8b73edb788eeba1aJamie Gennis GRALLOC_USAGE_HW_2D = 0x00000400, 734b560d5563ee4699cd24938c2f13b4a416408273Jamie Gennis /* buffer will be used by the HWComposer HAL module */ 744b560d5563ee4699cd24938c2f13b4a416408273Jamie Gennis GRALLOC_USAGE_HW_COMPOSER = 0x00000800, 75a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* buffer will be used with the framebuffer device */ 76a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian GRALLOC_USAGE_HW_FB = 0x00001000, 77a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* mask for the software usage bit-mask */ 78a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian GRALLOC_USAGE_HW_MASK = 0x00001F00, 7995d78bef32edd183fb8c16b7775bf0a069948420Jamie Gennis 807edeaf91a8d066e6797f875451f8aa9e9a4682f6Jamie Gennis /* buffer should be displayed full-screen on an external display when 817edeaf91a8d066e6797f875451f8aa9e9a4682f6Jamie Gennis * possible 827edeaf91a8d066e6797f875451f8aa9e9a4682f6Jamie Gennis */ 837edeaf91a8d066e6797f875451f8aa9e9a4682f6Jamie Gennis GRALLOC_USAGE_EXTERNAL_DISP = 0x00002000, 847edeaf91a8d066e6797f875451f8aa9e9a4682f6Jamie Gennis 857cb277a5c26447df01196bb19650235603062e93Glenn Kasten /* Must have a hardware-protected path to external display sink for 867cb277a5c26447df01196bb19650235603062e93Glenn Kasten * this buffer. If a hardware-protected path is not available, then 877cb277a5c26447df01196bb19650235603062e93Glenn Kasten * either don't composite only this buffer (preferred) to the 887cb277a5c26447df01196bb19650235603062e93Glenn Kasten * external sink, or (less desirable) do not route the entire 897cb277a5c26447df01196bb19650235603062e93Glenn Kasten * composition to the external sink. 907cb277a5c26447df01196bb19650235603062e93Glenn Kasten */ 917cb277a5c26447df01196bb19650235603062e93Glenn Kasten GRALLOC_USAGE_PROTECTED = 0x00004000, 927cb277a5c26447df01196bb19650235603062e93Glenn Kasten 9395d78bef32edd183fb8c16b7775bf0a069948420Jamie Gennis /* implementation-specific private usage flags */ 9495d78bef32edd183fb8c16b7775bf0a069948420Jamie Gennis GRALLOC_USAGE_PRIVATE_0 = 0x10000000, 9595d78bef32edd183fb8c16b7775bf0a069948420Jamie Gennis GRALLOC_USAGE_PRIVATE_1 = 0x20000000, 9695d78bef32edd183fb8c16b7775bf0a069948420Jamie Gennis GRALLOC_USAGE_PRIVATE_2 = 0x40000000, 9795d78bef32edd183fb8c16b7775bf0a069948420Jamie Gennis GRALLOC_USAGE_PRIVATE_3 = 0x80000000, 9895d78bef32edd183fb8c16b7775bf0a069948420Jamie Gennis GRALLOC_USAGE_PRIVATE_MASK = 0xF0000000, 99a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian}; 100a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 101a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian/*****************************************************************************/ 102a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 103a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian/** 104a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * Every hardware module must have a data structure named HAL_MODULE_INFO_SYM 105a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * and the fields of this data structure must begin with hw_module_t 106a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * followed by module specific information. 107a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian */ 1089d82c1a447a72a2c086b9cd34c5b73b163d7acbcMathias Agopiantypedef struct gralloc_module_t { 109a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian struct hw_module_t common; 110a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 111988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian /* 112988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * (*registerBuffer)() must be called before a buffer_handle_t that has not 113988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * been created with (*alloc_device_t::alloc)() can be used. 114988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * 115988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * This is intended to be used with buffer_handle_t's that have been 116988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * received in this process through IPC. 117988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * 118988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * This function checks that the handle is indeed a valid one and prepares 119988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * it for use with (*lock)() and (*unlock)(). 120988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * 121988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * It is not necessary to call (*registerBuffer)() on a handle created 122988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * with (*alloc_device_t::alloc)(). 123a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * 124988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * returns an error if this buffer_handle_t is not valid. 125a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian */ 126988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian int (*registerBuffer)(struct gralloc_module_t const* module, 127988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian buffer_handle_t handle); 128a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 129a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* 130988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * (*unregisterBuffer)() is called once this handle is no longer needed in 131988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * this process. After this call, it is an error to call (*lock)(), 132988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * (*unlock)(), or (*registerBuffer)(). 133988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * 134988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * This function doesn't close or free the handle itself; this is done 135988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * by other means, usually through libcutils's native_handle_close() and 136988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * native_handle_free(). 137a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * 138988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * It is an error to call (*unregisterBuffer)() on a buffer that wasn't 139988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * explicitly registered first. 140a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian */ 141988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian int (*unregisterBuffer)(struct gralloc_module_t const* module, 142988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian buffer_handle_t handle); 143a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 144a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* 145a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * The (*lock)() method is called before a buffer is accessed for the 146a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * specified usage. This call may block, for instance if the h/w needs 147a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * to finish rendering or if CPU caches need to be synchronized. 148a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * 149988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * The caller promises to modify only pixels in the area specified 150988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * by (l,t,w,h). 151a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * 152a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * The content of the buffer outside of the specified area is NOT modified 153a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * by this call. 154988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * 155988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * If usage specifies GRALLOC_USAGE_SW_*, vaddr is filled with the address 156988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * of the buffer in virtual memory. 157988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * 158485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * THREADING CONSIDERATIONS: 159485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * 160485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * It is legal for several different threads to lock a buffer from 161485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * read access, none of the threads are blocked. 162485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * 163485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * However, locking a buffer simultaneously for write or read/write is 164485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * undefined, but: 165485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * - shall not result in termination of the process 166485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * - shall not block the caller 167485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * It is acceptable to return an error or to leave the buffer's content 168485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * into an indeterminate state. 169485e69809aef8bf301b6bf19c03dc2d7693aaa1aMathias Agopian * 170988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * If the buffer was created with a usage mask incompatible with the 171988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian * requested usage flags here, -EINVAL is returned. 172a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * 173a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian */ 174a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 175a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian int (*lock)(struct gralloc_module_t const* module, 176a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian buffer_handle_t handle, int usage, 177988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian int l, int t, int w, int h, 178988b8bd553180e8d71b4028ecb721f46312efe62Mathias Agopian void** vaddr); 179a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 180a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 181a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* 182a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * The (*unlock)() method must be called after all changes to the buffer 183a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * are completed. 184a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian */ 185a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 186a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian int (*unlock)(struct gralloc_module_t const* module, 187a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian buffer_handle_t handle); 188a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 189cd2433f3804a537aedc26f595b1c05f95a05244aMathias Agopian 190cd2433f3804a537aedc26f595b1c05f95a05244aMathias Agopian /* reserved for future use */ 191cd2433f3804a537aedc26f595b1c05f95a05244aMathias Agopian int (*perform)(struct gralloc_module_t const* module, 192cd2433f3804a537aedc26f595b1c05f95a05244aMathias Agopian int operation, ... ); 193cd2433f3804a537aedc26f595b1c05f95a05244aMathias Agopian 1948255d9d3b62ddf90269ddbb54e6f92b29908fa75Mathias Agopian /* reserved for future use */ 195cd2433f3804a537aedc26f595b1c05f95a05244aMathias Agopian void* reserved_proc[7]; 1969d82c1a447a72a2c086b9cd34c5b73b163d7acbcMathias Agopian} gralloc_module_t; 197a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 198a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian/*****************************************************************************/ 199a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 200a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian/** 201a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * Every device data structure must begin with hw_device_t 202a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * followed by module specific public methods and attributes. 203a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian */ 204a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 2059d82c1a447a72a2c086b9cd34c5b73b163d7acbcMathias Agopiantypedef struct alloc_device_t { 206a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian struct hw_device_t common; 207a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 208a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* 209a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * (*alloc)() Allocates a buffer in graphic memory with the requested 210a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * parameters and returns a buffer_handle_t and the stride in pixels to 211a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * allow the implementation to satisfy hardware constraints on the width 212a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * of a pixmap (eg: it may have to be multiple of 8 pixels). 213a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * The CALLER TAKES OWNERSHIP of the buffer_handle_t. 214a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * 215a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * Returns 0 on success or -errno on error. 216a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian */ 217a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 218a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian int (*alloc)(struct alloc_device_t* dev, 219a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian int w, int h, int format, int usage, 220a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian buffer_handle_t* handle, int* stride); 221a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 222a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian /* 223a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * (*free)() Frees a previously allocated buffer. 224a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * Behavior is undefined if the buffer is still mapped in any process, 225a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * but shall not result in termination of the program or security breaches 226a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * (allowing a process to get access to another process' buffers). 227a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * THIS FUNCTION TAKES OWNERSHIP of the buffer_handle_t which becomes 228a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * invalid after the call. 229a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * 230a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian * Returns 0 on success or -errno on error. 231a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian */ 232a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian int (*free)(struct alloc_device_t* dev, 233a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian buffer_handle_t handle); 234a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 235158549c89405186d9ecaefd3811cfae3949056eeErik Gilling /* This hook is OPTIONAL. 236158549c89405186d9ecaefd3811cfae3949056eeErik Gilling * 237158549c89405186d9ecaefd3811cfae3949056eeErik Gilling * If non NULL it will be caused by SurfaceFlinger on dumpsys 238158549c89405186d9ecaefd3811cfae3949056eeErik Gilling */ 239158549c89405186d9ecaefd3811cfae3949056eeErik Gilling void (*dump)(struct alloc_device_t *dev, char *buff, int buff_len); 240158549c89405186d9ecaefd3811cfae3949056eeErik Gilling 241158549c89405186d9ecaefd3811cfae3949056eeErik Gilling void* reserved_proc[7]; 2429d82c1a447a72a2c086b9cd34c5b73b163d7acbcMathias Agopian} alloc_device_t; 243a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 244a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 245a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian/** convenience API for opening and closing a supported device */ 246a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 247a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopianstatic inline int gralloc_open(const struct hw_module_t* module, 248a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian struct alloc_device_t** device) { 249a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian return module->methods->open(module, 250a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian GRALLOC_HARDWARE_GPU0, (struct hw_device_t**)device); 251a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian} 252a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 253a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopianstatic inline int gralloc_close(struct alloc_device_t* device) { 254a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian return device->common.close(&device->common); 255a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian} 256a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 257a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian__END_DECLS 258a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian 259a8a75166a2d3c7639a7432a67075c98796165206Mathias Agopian#endif // ANDROID_ALLOC_INTERFACE_H 260