/* * Copyright (c) 2010 Mans Rullgard <mans@mansr.com> * * 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_ARM_INTMATH_H #define AVUTIL_ARM_INTMATH_H #include <stdint.h> #include "config.h" #include "libavutil/attributes.h" #if HAVE_INLINE_ASM #if HAVE_ARMV6_INLINE #define av_clip_uint8 av_clip_uint8_arm static av_always_inline av_const unsigned av_clip_uint8_arm(int a) { unsigned x; __asm__ ("usat %0, #8, %1" : "=r"(x) : "r"(a)); return x; } #define av_clip_int8 av_clip_int8_arm static av_always_inline av_const int av_clip_int8_arm(int a) { int x; __asm__ ("ssat %0, #8, %1" : "=r"(x) : "r"(a)); return x; } #define av_clip_uint16 av_clip_uint16_arm static av_always_inline av_const unsigned av_clip_uint16_arm(int a) { unsigned x; __asm__ ("usat %0, #16, %1" : "=r"(x) : "r"(a)); return x; } #define av_clip_int16 av_clip_int16_arm static av_always_inline av_const int av_clip_int16_arm(int a) { int x; __asm__ ("ssat %0, #16, %1" : "=r"(x) : "r"(a)); return x; } #define av_clip_intp2 av_clip_intp2_arm static av_always_inline av_const int av_clip_intp2_arm(int a, int p) { unsigned x; __asm__ ("ssat %0, %2, %1" : "=r"(x) : "r"(a), "i"(p+1)); return x; } #define av_clip_uintp2 av_clip_uintp2_arm static av_always_inline av_const unsigned av_clip_uintp2_arm(int a, int p) { unsigned x; __asm__ ("usat %0, %2, %1" : "=r"(x) : "r"(a), "i"(p)); return x; } #define av_sat_add32 av_sat_add32_arm static av_always_inline int av_sat_add32_arm(int a, int b) { int r; __asm__ ("qadd %0, %1, %2" : "=r"(r) : "r"(a), "r"(b)); return r; } #define av_sat_dadd32 av_sat_dadd32_arm static av_always_inline int av_sat_dadd32_arm(int a, int b) { int r; __asm__ ("qdadd %0, %1, %2" : "=r"(r) : "r"(a), "r"(b)); return r; } #endif /* HAVE_ARMV6_INLINE */ #if HAVE_ASM_MOD_Q #define av_clipl_int32 av_clipl_int32_arm static av_always_inline av_const int32_t av_clipl_int32_arm(int64_t a) { int x, y; __asm__ ("adds %1, %R2, %Q2, lsr #31 \n\t" "itet ne \n\t" "mvnne %1, #1<<31 \n\t" "moveq %0, %Q2 \n\t" "eorne %0, %1, %R2, asr #31 \n\t" : "=r"(x), "=&r"(y) : "r"(a) : "cc"); return x; } #endif /* HAVE_ASM_MOD_Q */ #endif /* HAVE_INLINE_ASM */ #endif /* AVUTIL_ARM_INTMATH_H */