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Diffstat (limited to 'media/ffvpx/libavutil/arm/intmath.h')
| -rw-r--r-- | media/ffvpx/libavutil/arm/intmath.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/arm/intmath.h b/media/ffvpx/libavutil/arm/intmath.h new file mode 100644 index 0000000000..f19b21e98d --- /dev/null +++ b/media/ffvpx/libavutil/arm/intmath.h @@ -0,0 +1,146 @@ +/* + * 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 int av_clip_uint8_arm(int a) +{ + int 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 int av_clip_uint16_arm(int a) +{ + int 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) +{ + if (av_builtin_constant_p(p)) { + unsigned x; + __asm__ ("ssat %0, %2, %1" : "=r"(x) : "r"(a), "i"(p+1)); + return x; + } else { + if (((unsigned)a + (1 << p)) & ~((2 << p) - 1)) + return (a >> 31) ^ ((1 << p) - 1); + else + return a; + } +} + +#define av_clip_uintp2 av_clip_uintp2_arm +static av_always_inline av_const unsigned av_clip_uintp2_arm(int a, int p) +{ + if (av_builtin_constant_p(p)) { + unsigned x; + __asm__ ("usat %0, %2, %1" : "=r"(x) : "r"(a), "i"(p)); + return x; + } else { + if (a & ~((1<<p) - 1)) return (~a) >> 31 & ((1<<p) - 1); + else return a; + } +} + +#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; +} + +#define av_sat_sub32 av_sat_sub32_arm +static av_always_inline int av_sat_sub32_arm(int a, int b) +{ + int r; + __asm__ ("qsub %0, %1, %2" : "=r"(r) : "r"(a), "r"(b)); + return r; +} + +#define av_sat_dsub32 av_sat_dsub32_arm +static av_always_inline int av_sat_dsub32_arm(int a, int b) +{ + int r; + __asm__ ("qdsub %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 */ |