/* * Copyright (c) 2016, Alliance for Open Media. All rights reserved. * * This source code is subject to the terms of the BSD 2 Clause License and * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License * was not distributed with this source code in the LICENSE file, you can * obtain it at www.aomedia.org/license/software. If the Alliance for Open * Media Patent License 1.0 was not distributed with this source code in the * PATENTS file, you can obtain it at www.aomedia.org/license/patent. */ #ifndef AOM_AOM_PORTS_MEM_OPS_ALIGNED_H_ #define AOM_AOM_PORTS_MEM_OPS_ALIGNED_H_ #include "aom/aom_integer.h" /* \file * \brief Provides portable memory access primitives for operating on aligned * data * * This file is split from mem_ops.h for easier maintenance. See mem_ops.h * for a more detailed description of these primitives. */ #ifndef INCLUDED_BY_MEM_OPS_H #error Include mem_ops.h, not mem_ops_aligned.h directly. #endif /* Architectures that provide instructions for doing this byte swapping * could redefine these macros. */ #define swap_endian_16(val, raw) \ do { \ val = (uint16_t)(((raw >> 8) & 0x00ff) | ((raw << 8) & 0xff00)); \ } while (0) #define swap_endian_32(val, raw) \ do { \ val = ((raw >> 24) & 0x000000ff) | ((raw >> 8) & 0x0000ff00) | \ ((raw << 8) & 0x00ff0000) | ((raw << 24) & 0xff000000); \ } while (0) #define swap_endian_16_se(val, raw) \ do { \ swap_endian_16(val, raw); \ val = ((val << 16) >> 16); \ } while (0) #define swap_endian_32_se(val, raw) swap_endian_32(val, raw) #define mem_get_ne_aligned_generic(end, sz) \ static inline unsigned MEM_VALUE_T mem_get_##end##sz##_aligned( \ const void *vmem) { \ const uint##sz##_t *mem = (const uint##sz##_t *)vmem; \ return *mem; \ } #define mem_get_sne_aligned_generic(end, sz) \ static inline signed MEM_VALUE_T mem_get_s##end##sz##_aligned( \ const void *vmem) { \ const int##sz##_t *mem = (const int##sz##_t *)vmem; \ return *mem; \ } #define mem_get_se_aligned_generic(end, sz) \ static inline unsigned MEM_VALUE_T mem_get_##end##sz##_aligned( \ const void *vmem) { \ const uint##sz##_t *mem = (const uint##sz##_t *)vmem; \ unsigned MEM_VALUE_T val, raw = *mem; \ swap_endian_##sz(val, raw); \ return val; \ } #define mem_get_sse_aligned_generic(end, sz) \ static inline signed MEM_VALUE_T mem_get_s##end##sz##_aligned( \ const void *vmem) { \ const int##sz##_t *mem = (const int##sz##_t *)vmem; \ unsigned MEM_VALUE_T val, raw = *mem; \ swap_endian_##sz##_se(val, raw); \ return val; \ } #define mem_put_ne_aligned_generic(end, sz) \ static inline void mem_put_##end##sz##_aligned(void *vmem, \ MEM_VALUE_T val) { \ uint##sz##_t *mem = (uint##sz##_t *)vmem; \ *mem = (uint##sz##_t)val; \ } #define mem_put_se_aligned_generic(end, sz) \ static inline void mem_put_##end##sz##_aligned(void *vmem, \ MEM_VALUE_T val) { \ uint##sz##_t *mem = (uint##sz##_t *)vmem, raw; \ swap_endian_##sz(raw, val); \ *mem = (uint##sz##_t)raw; \ } #include "config/aom_config.h" #if CONFIG_BIG_ENDIAN #define mem_get_be_aligned_generic(sz) mem_get_ne_aligned_generic(be, sz) #define mem_get_sbe_aligned_generic(sz) mem_get_sne_aligned_generic(be, sz) #define mem_get_le_aligned_generic(sz) mem_get_se_aligned_generic(le, sz) #define mem_get_sle_aligned_generic(sz) mem_get_sse_aligned_generic(le, sz) #define mem_put_be_aligned_generic(sz) mem_put_ne_aligned_generic(be, sz) #define mem_put_le_aligned_generic(sz) mem_put_se_aligned_generic(le, sz) #else #define mem_get_be_aligned_generic(sz) mem_get_se_aligned_generic(be, sz) #define mem_get_sbe_aligned_generic(sz) mem_get_sse_aligned_generic(be, sz) #define mem_get_le_aligned_generic(sz) mem_get_ne_aligned_generic(le, sz) #define mem_get_sle_aligned_generic(sz) mem_get_sne_aligned_generic(le, sz) #define mem_put_be_aligned_generic(sz) mem_put_se_aligned_generic(be, sz) #define mem_put_le_aligned_generic(sz) mem_put_ne_aligned_generic(le, sz) #endif /* clang-format off */ #undef mem_get_be16_aligned #define mem_get_be16_aligned mem_ops_wrap_symbol(mem_get_be16_aligned) mem_get_be_aligned_generic(16) #undef mem_get_be32_aligned #define mem_get_be32_aligned mem_ops_wrap_symbol(mem_get_be32_aligned) mem_get_be_aligned_generic(32) #undef mem_get_le16_aligned #define mem_get_le16_aligned mem_ops_wrap_symbol(mem_get_le16_aligned) mem_get_le_aligned_generic(16) #undef mem_get_le32_aligned #define mem_get_le32_aligned mem_ops_wrap_symbol(mem_get_le32_aligned) mem_get_le_aligned_generic(32) #undef mem_get_sbe16_aligned #define mem_get_sbe16_aligned mem_ops_wrap_symbol(mem_get_sbe16_aligned) mem_get_sbe_aligned_generic(16) #undef mem_get_sbe32_aligned #define mem_get_sbe32_aligned mem_ops_wrap_symbol(mem_get_sbe32_aligned) mem_get_sbe_aligned_generic(32) #undef mem_get_sle16_aligned #define mem_get_sle16_aligned mem_ops_wrap_symbol(mem_get_sle16_aligned) mem_get_sle_aligned_generic(16) #undef mem_get_sle32_aligned #define mem_get_sle32_aligned mem_ops_wrap_symbol(mem_get_sle32_aligned) mem_get_sle_aligned_generic(32) #undef mem_put_be16_aligned #define mem_put_be16_aligned mem_ops_wrap_symbol(mem_put_be16_aligned) mem_put_be_aligned_generic(16) #undef mem_put_be32_aligned #define mem_put_be32_aligned mem_ops_wrap_symbol(mem_put_be32_aligned) mem_put_be_aligned_generic(32) #undef mem_put_le16_aligned #define mem_put_le16_aligned mem_ops_wrap_symbol(mem_put_le16_aligned) mem_put_le_aligned_generic(16) #undef mem_put_le32_aligned #define mem_put_le32_aligned mem_ops_wrap_symbol(mem_put_le32_aligned) mem_put_le_aligned_generic(32) #undef mem_get_ne_aligned_generic #undef mem_get_se_aligned_generic #undef mem_get_sne_aligned_generic #undef mem_get_sse_aligned_generic #undef mem_put_ne_aligned_generic #undef mem_put_se_aligned_generic #undef swap_endian_16 #undef swap_endian_32 #undef swap_endian_16_se #undef swap_endian_32_se /* clang-format on */ #endif // AOM_AOM_PORTS_MEM_OPS_ALIGNED_H_