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/*
* Copyright (C) 2016-2020 ARM Limited. All rights reserved.
*
* Copyright (C) 2008 The Android Open Source Project
*
* 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.
*/
#ifndef MALI_GRALLOC_BUFFERALLOCATION_H_
#define MALI_GRALLOC_BUFFERALLOCATION_H_
#include <hardware/hardware.h>
#include "mali_gralloc_buffer.h"
#include "core/mali_gralloc_bufferdescriptor.h"
/* Compression scheme */
enum class AllocBaseType
{
/*
* No compression scheme
*/
UNCOMPRESSED,
/*
* Arm Framebuffer Compression
*/
AFBC, /* 16 x 16 block size */
AFBC_WIDEBLK, /* 32 x 8 block size */
AFBC_EXTRAWIDEBLK, /* 64 x 4 block size */
};
/*
* Allocation type.
*
* Allocation-specific properties of format modifiers
* described by MALI_GRALLOC_INTFMT_*.
*/
struct AllocType
{
/*
* The compression scheme in use
*
* For AFBC formats, this describes:
* - the block size for single plane base formats, or
* - the block size of the first/luma plane for multi-plane base formats.
*/
AllocBaseType primary_type{AllocBaseType::UNCOMPRESSED};
/*
* Multi-plane AFBC format. AFBC chroma-only plane(s) are
* always compressed with superblock type 'AFBC_EXTRAWIDEBLK'.
*/
bool is_multi_plane{};
/*
* Allocate tiled AFBC headers.
*/
bool is_tiled{};
/*
* Pad AFBC header stride to 64-byte alignment
* (multiple of 4x16B headers).
*/
bool is_padded{};
/*
* Front-buffer rendering safe AFBC allocations include an
* additional 4kB-aligned body buffer.
*/
bool is_frontbuffer_safe{};
bool is_afbc() const
{
switch (primary_type)
{
case AllocBaseType::AFBC:
case AllocBaseType::AFBC_WIDEBLK:
case AllocBaseType::AFBC_EXTRAWIDEBLK:
return true;
default:
return false;
}
}
};
using alloc_type_t = AllocType;
int mali_gralloc_derive_format_and_size(buffer_descriptor_t * const bufDescriptor);
int mali_gralloc_buffer_allocate(const gralloc_buffer_descriptor_t *descriptors,
uint32_t numDescriptors, buffer_handle_t *pHandle, bool *shared_backend,
bool is_dry = false);
int mali_gralloc_buffer_free(buffer_handle_t pHandle);
void init_afbc(uint8_t *buf, uint64_t internal_format, const bool is_multi_plane, uint64_t w, uint64_t h);
bool get_alloc_type(const uint64_t format_ext,
const uint32_t format_idx,
const uint64_t usage,
alloc_type_t * const alloc_type);
#endif /* MALI_GRALLOC_BUFFERALLOCATION_H_ */
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