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Diffstat (limited to 'apps/codecs/libwmapro/mathops.h')
-rw-r--r-- | apps/codecs/libwmapro/mathops.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/apps/codecs/libwmapro/mathops.h b/apps/codecs/libwmapro/mathops.h new file mode 100644 index 0000000000..149910bb1d --- /dev/null +++ b/apps/codecs/libwmapro/mathops.h @@ -0,0 +1,150 @@ +/* + * simple math operations + * Copyright (c) 2001, 2002 Fabrice Bellard + * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al + * + * 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 AVCODEC_MATHOPS_H +#define AVCODEC_MATHOPS_H + +#include "libavutil/common.h" + +#if ARCH_ARM +# include "arm/mathops.h" +#elif ARCH_AVR32 +# include "avr32/mathops.h" +#elif ARCH_BFIN +# include "bfin/mathops.h" +#elif ARCH_MIPS +# include "mips/mathops.h" +#elif ARCH_PPC +# include "ppc/mathops.h" +#elif ARCH_X86 +# include "x86/mathops.h" +#endif + +/* generic implementation */ + +#ifndef MULL +# define MULL(a,b,s) (((int64_t)(a) * (int64_t)(b)) >> (s)) +#endif + +#ifndef MULH +//gcc 3.4 creates an incredibly bloated mess out of this +//# define MULH(a,b) (((int64_t)(a) * (int64_t)(b))>>32) + +static av_always_inline int MULH(int a, int b){ + return ((int64_t)(a) * (int64_t)(b))>>32; +} +#endif + +#ifndef UMULH +static av_always_inline unsigned UMULH(unsigned a, unsigned b){ + return ((uint64_t)(a) * (uint64_t)(b))>>32; +} +#endif + +#ifndef MUL64 +# define MUL64(a,b) ((int64_t)(a) * (int64_t)(b)) +#endif + +#ifndef MAC64 +# define MAC64(d, a, b) ((d) += MUL64(a, b)) +#endif + +#ifndef MLS64 +# define MLS64(d, a, b) ((d) -= MUL64(a, b)) +#endif + +/* signed 16x16 -> 32 multiply add accumulate */ +#ifndef MAC16 +# define MAC16(rt, ra, rb) rt += (ra) * (rb) +#endif + +/* signed 16x16 -> 32 multiply */ +#ifndef MUL16 +# define MUL16(ra, rb) ((ra) * (rb)) +#endif + +#ifndef MLS16 +# define MLS16(rt, ra, rb) ((rt) -= (ra) * (rb)) +#endif + +/* median of 3 */ +#ifndef mid_pred +#define mid_pred mid_pred +static inline av_const int mid_pred(int a, int b, int c) +{ +#if 0 + int t= (a-b)&((a-b)>>31); + a-=t; + b+=t; + b-= (b-c)&((b-c)>>31); + b+= (a-b)&((a-b)>>31); + + return b; +#else + if(a>b){ + if(c>b){ + if(c>a) b=a; + else b=c; + } + }else{ + if(b>c){ + if(c>a) b=c; + else b=a; + } + } + return b; +#endif +} +#endif + +#ifndef sign_extend +static inline av_const int sign_extend(int val, unsigned bits) +{ + return (val << (INT_BIT - bits)) >> (INT_BIT - bits); +} +#endif + +#ifndef zero_extend +static inline av_const unsigned zero_extend(unsigned val, unsigned bits) +{ + return (val << (INT_BIT - bits)) >> (INT_BIT - bits); +} +#endif + +#ifndef COPY3_IF_LT +#define COPY3_IF_LT(x, y, a, b, c, d)\ +if ((y) < (x)) {\ + (x) = (y);\ + (a) = (b);\ + (c) = (d);\ +} +#endif + +#ifndef NEG_SSR32 +# define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s))) +#endif + +#ifndef NEG_USR32 +# define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s))) +#endif + +#endif /* AVCODEC_MATHOPS_H */ + |