107 lines
3.6 KiB
C
107 lines
3.6 KiB
C
/*
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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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* Copyright (C) 2016 Linaro, Ltd., Rob Herring <robh@kernel.org>
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* Copyright (C) 2018 Collabora, Robert Foss <robert.foss@collabora.com>
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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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#ifndef __ANDROID_GRALLOC_HANDLE_H__
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#define __ANDROID_GRALLOC_HANDLE_H__
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#include <cutils/native_handle.h>
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#include <stdint.h>
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/* support users of drm_gralloc/gbm_gralloc */
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#define gralloc_gbm_handle_t gralloc_handle_t
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#define gralloc_drm_handle_t gralloc_handle_t
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struct gralloc_handle_t {
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native_handle_t base;
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/* dma-buf file descriptor
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* Must be located first since, native_handle_t is allocated
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* using native_handle_create(), which allocates space for
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* sizeof(native_handle_t) + sizeof(int) * (numFds + numInts)
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* numFds = GRALLOC_HANDLE_NUM_FDS
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* numInts = GRALLOC_HANDLE_NUM_INTS
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* Where numFds represents the number of FDs and
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* numInts represents the space needed for the
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* remainder of this struct.
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* And the FDs are expected to be found first following
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* native_handle_t.
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*/
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int prime_fd;
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/* api variables */
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const int magic; /* differentiate between allocator impls */
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const uint32_t version; /* api version */
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int width; /* width of buffer in pixels */
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int height; /* height of buffer in pixels */
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int format; /* pixel format (Android) */
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int usage; /* android libhardware usage flags */
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int stride; /* the stride in bytes */
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uint64_t modifier; /* buffer modifiers */
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int data_owner; /* owner of data (for validation) */
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union {
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void *data; /* pointer to struct gralloc_gbm_bo_t */
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uint64_t reserved;
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} __attribute__((aligned(8)));
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};
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#define GRALLOC_HANDLE_VERSION 2
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#define GRALLOC_HANDLE_MAGIC 0x60585350
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#define GRALLOC_HANDLE_NUM_FDS 1
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#define GRALLOC_HANDLE_NUM_INTS ( \
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((sizeof(struct alloc_handle_t) - sizeof(native_handle_t))/sizeof(int)) \
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- GRALLOC_HANDLE_NUM_FDS)
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/**
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* Create a buffer handle.
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*/
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static struct gralloc_handle_t gralloc_handle_create(int width, int height,
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int format, int usage)
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{
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struct alloc_handle_t handle = {
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.magic = GRALLOC_HANDLE_MAGIC,
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.version = GRALLOC_HANDLE_VERSION };
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native_handle_t *nhandle = native_handle_create(GRALLOC_HANDLE_NUM_FDS,
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GRALLOC_HANDLE_NUM_INTS);
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handle.base = *nhandle;
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native_handle_delete(nhandle);
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handle.width = width;
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handle.height = height;
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handle.format = format;
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handle.usage = usage;
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handle.prime_fd = -1;
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handle->data_owner = getpid();
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handle->data = bo;
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return handle;
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}
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#endif
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