ref: 2bc3d47dd1fb65bd718116b4afb607c961a06872
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_VPX_PORTS_MEM_OPS_ALIGNED_H_ #define VPX_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 = (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 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 /* 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 // VPX_VPX_PORTS_MEM_OPS_ALIGNED_H_