ref: 1827764450def2970b1866f10d0c359e6d118069
dir: /vpx_ports/mem_ops_aligned.h/
/* * Copyright (c) 2010 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #ifndef VPX_PORTS_MEM_OPS_ALIGNED_H_ #define VPX_PORTS_MEM_OPS_ALIGNED_H_ #include "vpx/vpx_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 = ((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 VPX_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 VPX_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 VPX_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 VPX_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 VPX_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 VPX_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 "vpx_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 #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 #endif // VPX_PORTS_MEM_OPS_ALIGNED_H_