5bc176b1a6
The purpose of this change is to add support for allocating gralloc buffers from either /dev/pmem or /dev/pmem_adsp depending on the usage flags. It does this by factoring out and abstracting the interactions with the pmem device. For /dev/pmem allocations, the kernel allocator is not used, so a single master fd is opened, and all the allocations are sub-allocated from that by gralloc. For /dev/pmem_adsp the kernel allocator is used, so it simply opens a new fd for each allocation. A very basic unit test that can be run on the host is included. It requires gtest, so to run it on a host system gtest must (currently) be compiled with BUILD_WITH_ASTL=true. Change-Id: If2ae0151698fad8107e18e808a3fa012a846263f
77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
/*
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* Copyright (C) 2008 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 GRALLOC_QSD8K_GPU_H_
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#define GRALLOC_QSD8K_GPU_H_
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#include <errno.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <string.h>
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#include <cutils/log.h>
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#include <cutils/ashmem.h>
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#include "gralloc_priv.h"
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#include "pmemalloc.h"
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class gpu_context_t : public alloc_device_t {
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public:
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class Deps {
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public:
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virtual ~Deps();
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// ashmem
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virtual int ashmem_create_region(const char *name, size_t size) = 0;
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// POSIX
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virtual int close(int fd) = 0;
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// Framebuffer (locally defined)
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virtual int mapFrameBufferLocked(struct private_module_t* module) = 0;
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virtual int terminateBuffer(gralloc_module_t const* module,
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private_handle_t* hnd) = 0;
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};
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gpu_context_t(Deps& deps, PmemAllocator& pmemAllocator,
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PmemAllocator& pmemAdspAllocator, const private_module_t* module);
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int gralloc_alloc_framebuffer_locked(size_t size, int usage,
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buffer_handle_t* pHandle);
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int gralloc_alloc_framebuffer(size_t size, int usage,
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buffer_handle_t* pHandle);
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int gralloc_alloc_buffer(size_t size, int usage, buffer_handle_t* pHandle);
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int free_impl(private_handle_t const* hnd);
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int alloc_impl(int w, int h, int format, int usage,
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buffer_handle_t* pHandle, int* pStride);
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static int gralloc_alloc(alloc_device_t* dev, int w, int h, int format,
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int usage, buffer_handle_t* pHandle, int* pStride);
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static int gralloc_free(alloc_device_t* dev, buffer_handle_t handle);
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static int gralloc_close(struct hw_device_t *dev);
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private:
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Deps& deps;
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PmemAllocator& pmemAllocator;
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PmemAllocator& pmemAdspAllocator;
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};
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#endif // GRALLOC_QSD8K_GPU_H
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