/* * Copyright (c) 2002 Fabrice Bellard * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVUTIL_MEM_INTERNAL_H #define AVUTIL_MEM_INTERNAL_H #include "config.h" #include <stdint.h> #include "attributes.h" #include "macros.h" /** * @def DECLARE_ALIGNED(n,t,v) * Declare a variable that is aligned in memory. * * @code{.c} * DECLARE_ALIGNED(16, uint16_t, aligned_int) = 42; * DECLARE_ALIGNED(32, uint8_t, aligned_array)[128]; * * // The default-alignment equivalent would be * uint16_t aligned_int = 42; * uint8_t aligned_array[128]; * @endcode * * @param n Minimum alignment in bytes * @param t Type of the variable (or array element) * @param v Name of the variable */ /** * @def DECLARE_ASM_ALIGNED(n,t,v) * Declare an aligned variable appropriate for use in inline assembly code. * * @code{.c} * DECLARE_ASM_ALIGNED(16, uint64_t, pw_08) = UINT64_C(0x0008000800080008); * @endcode * * @param n Minimum alignment in bytes * @param t Type of the variable (or array element) * @param v Name of the variable */ /** * @def DECLARE_ASM_CONST(n,t,v) * Declare a static constant aligned variable appropriate for use in inline * assembly code. * * @code{.c} * DECLARE_ASM_CONST(16, uint64_t, pw_08) = UINT64_C(0x0008000800080008); * @endcode * * @param n Minimum alignment in bytes * @param t Type of the variable (or array element) * @param v Name of the variable */ #if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1110 || defined(__SUNPRO_C) #define DECLARE_ALIGNED_T … #define DECLARE_ASM_ALIGNED … #define DECLARE_ASM_CONST … #elif defined(__DJGPP__) #define DECLARE_ALIGNED_T … #define DECLARE_ASM_ALIGNED … #define DECLARE_ASM_CONST … #elif defined(__GNUC__) || defined(__clang__) #define DECLARE_ALIGNED_T(n,t,v) … #define DECLARE_ASM_ALIGNED(n,t,v) … #define DECLARE_ASM_CONST(n,t,v) … #elif defined(_MSC_VER) #define DECLARE_ALIGNED_T … #define DECLARE_ASM_ALIGNED … #define DECLARE_ASM_CONST … #else #define DECLARE_ALIGNED_T … #define DECLARE_ASM_ALIGNED … #define DECLARE_ASM_CONST … #endif #if HAVE_SIMD_ALIGN_64 #define ALIGN_64 … #define ALIGN_32 … #elif HAVE_SIMD_ALIGN_32 #define ALIGN_64 … #define ALIGN_32 … #else #define ALIGN_64 … #define ALIGN_32 … #endif #define DECLARE_ALIGNED(n,t,v) … // Macro needs to be double-wrapped in order to expand // possible other macros being passed for n. #define DECLARE_ALIGNED_V(n,t,v) … #define DECLARE_ALIGNED_4(t,v) … #define DECLARE_ALIGNED_8(t,v) … #define DECLARE_ALIGNED_16(t,v) … #define DECLARE_ALIGNED_32(t,v) … #define DECLARE_ALIGNED_64(t,v) … // Some broken preprocessors need a second expansion // to be forced to tokenize __VA_ARGS__ #define E1(x) … #define LOCAL_ALIGNED_A(a, t, v, s, o, ...) … #define LOCAL_ALIGNED_D(a, t, v, s, o, ...) … #define LOCAL_ALIGNED(a, t, v, ...) … #if HAVE_LOCAL_ALIGNED #define LOCAL_ALIGNED_4(t, v, ...) … #else #define LOCAL_ALIGNED_4 … #endif #if HAVE_LOCAL_ALIGNED #define LOCAL_ALIGNED_8(t, v, ...) … #else #define LOCAL_ALIGNED_8 … #endif #if HAVE_LOCAL_ALIGNED #define LOCAL_ALIGNED_16(t, v, ...) … #else #define LOCAL_ALIGNED_16 … #endif #if HAVE_LOCAL_ALIGNED #define LOCAL_ALIGNED_32(t, v, ...) … #else #define LOCAL_ALIGNED_32 … #endif #endif /* AVUTIL_MEM_INTERNAL_H */
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