/* * 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 "config.h" #include "libavutil/common.h" #if HAVE_INLINE_ASM #if HAVE_ARMV6 static inline av_const int FASTDIV(int a, int b) { int r, t; __asm__ volatile("cmp %3, #2 \n\t" "ldr %1, [%4, %3, lsl #2] \n\t" "lsrle %0, %2, #1 \n\t" "smmulgt %0, %1, %2 \n\t" : "=&r"(r), "=&r"(t) : "r"(a), "r"(b), "r"(ff_inverse)); return r; } #else static inline av_const int FASTDIV(int a, int b) { int r, t; __asm__ volatile("umull %1, %0, %2, %3" : "=&r"(r), "=&r"(t) : "r"(a), "r"(ff_inverse[b])); return r; } #endif #define FASTDIV FASTDIV #endif /* HAVE_INLINE_ASM */ #endif /* AVUTIL_ARM_INTMATH_H */