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Diffstat (limited to 'third_party/aom/aom_ports/mem_ops_aligned.h')
| -rw-r--r-- | third_party/aom/aom_ports/mem_ops_aligned.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/third_party/aom/aom_ports/mem_ops_aligned.h b/third_party/aom/aom_ports/mem_ops_aligned.h new file mode 100644 index 000000000..37c367531 --- /dev/null +++ b/third_party/aom/aom_ports/mem_ops_aligned.h @@ -0,0 +1,173 @@ +/* + * 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 AOM_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 AOM_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 AOM_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 AOM_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 AOM_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 AOM_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_ |