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https://github.com/FFmpeg/FFmpeg.git
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545dc699f8
On some versions of gcc, these weren't always getting inlined due to hitting
the inline cap limit in some files. This is generally bad, as most of these
functions are smaller inlined than not.
(cherry picked from commit eb3755a5aa)
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/*
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* Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_ARM_INTMATH_H
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#define AVUTIL_ARM_INTMATH_H
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/attributes.h"
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#if HAVE_INLINE_ASM
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#if HAVE_ARMV6
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#define FASTDIV FASTDIV
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static av_always_inline av_const int FASTDIV(int a, int b)
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{
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int r, t;
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__asm__ volatile("cmp %3, #2 \n\t"
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"ldr %1, [%4, %3, lsl #2] \n\t"
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"lsrle %0, %2, #1 \n\t"
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"smmulgt %0, %1, %2 \n\t"
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: "=&r"(r), "=&r"(t) : "r"(a), "r"(b), "r"(ff_inverse));
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return r;
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}
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#define av_clip_uint8 av_clip_uint8_arm
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static av_always_inline av_const uint8_t av_clip_uint8_arm(int a)
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{
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unsigned x;
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__asm__ volatile ("usat %0, #8, %1" : "=r"(x) : "r"(a));
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return x;
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}
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#define av_clip_int8 av_clip_int8_arm
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static av_always_inline av_const uint8_t av_clip_int8_arm(int a)
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{
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unsigned x;
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__asm__ volatile ("ssat %0, #8, %1" : "=r"(x) : "r"(a));
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return x;
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}
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#define av_clip_uint16 av_clip_uint16_arm
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static av_always_inline av_const uint16_t av_clip_uint16_arm(int a)
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{
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unsigned x;
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__asm__ volatile ("usat %0, #16, %1" : "=r"(x) : "r"(a));
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return x;
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}
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#define av_clip_int16 av_clip_int16_arm
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static av_always_inline av_const int16_t av_clip_int16_arm(int a)
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{
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int x;
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__asm__ volatile ("ssat %0, #16, %1" : "=r"(x) : "r"(a));
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return x;
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}
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#else /* HAVE_ARMV6 */
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#define FASTDIV FASTDIV
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static av_always_inline av_const int FASTDIV(int a, int b)
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{
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int r, t;
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__asm__ volatile("umull %1, %0, %2, %3"
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: "=&r"(r), "=&r"(t) : "r"(a), "r"(ff_inverse[b]));
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return r;
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}
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#endif /* HAVE_ARMV6 */
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#define av_clipl_int32 av_clipl_int32_arm
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static av_always_inline av_const int32_t av_clipl_int32_arm(int64_t a)
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{
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int x, y;
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__asm__ volatile ("adds %1, %R2, %Q2, lsr #31 \n\t"
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"mvnne %1, #1<<31 \n\t"
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"eorne %0, %1, %R2, asr #31 \n\t"
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: "=r"(x), "=&r"(y) : "r"(a));
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return x;
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}
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#endif /* HAVE_INLINE_ASM */
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#endif /* AVUTIL_ARM_INTMATH_H */
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