Mercurial > cgi-bin > hgwebdir.cgi > PR > Applications > VSs > VSs__H264__App
comparison libavcodec/x86/mathops.h @ 3:0b056460c67d
changed code to use VSs
| author | Nina Engelhardt <nengel@mailbox.tu-berlin.de> |
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| date | Mon, 29 Oct 2012 16:44:27 +0100 |
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| -1:000000000000 | 0:41423be6c02c |
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| 1 /* | |
| 2 * simple math operations | |
| 3 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al | |
| 4 * | |
| 5 * This file is part of FFmpeg. | |
| 6 * | |
| 7 * FFmpeg is free software; you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Lesser General Public | |
| 9 * License as published by the Free Software Foundation; either | |
| 10 * version 2.1 of the License, or (at your option) any later version. | |
| 11 * | |
| 12 * FFmpeg is distributed in the hope that it will be useful, | |
| 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Lesser General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Lesser General Public | |
| 18 * License along with FFmpeg; if not, write to the Free Software | |
| 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 20 */ | |
| 21 | |
| 22 #ifndef AVCODEC_X86_MATHOPS_H | |
| 23 #define AVCODEC_X86_MATHOPS_H | |
| 24 | |
| 25 #include "config.h" | |
| 26 #include "libavutil/common.h" | |
| 27 | |
| 28 #if ARCH_X86_32 | |
| 29 #define MULL(ra, rb, shift) \ | |
| 30 ({ int rt, dummy; __asm__ (\ | |
| 31 "imull %3 \n\t"\ | |
| 32 "shrdl %4, %%edx, %%eax \n\t"\ | |
| 33 : "=a"(rt), "=d"(dummy)\ | |
| 34 : "a" ((int)ra), "rm" ((int)rb), "i"(shift));\ | |
| 35 rt; }) | |
| 36 | |
| 37 #define MULH(ra, rb) \ | |
| 38 ({ int rt, dummy;\ | |
| 39 __asm__ ("imull %3\n\t" : "=d"(rt), "=a"(dummy): "a" ((int)ra), "rm" ((int)rb));\ | |
| 40 rt; }) | |
| 41 | |
| 42 #define MUL64(ra, rb) \ | |
| 43 ({ int64_t rt;\ | |
| 44 __asm__ ("imull %2\n\t" : "=A"(rt) : "a" ((int)ra), "g" ((int)rb));\ | |
| 45 rt; }) | |
| 46 #endif | |
| 47 | |
| 48 // avoid +32 for shift optimization (gcc should do that ...) | |
| 49 #define NEG_SSR32 NEG_SSR32 | |
| 50 static inline int32_t NEG_SSR32( int32_t a, int8_t s){ | |
| 51 __asm__ ("sarl %1, %0\n\t" | |
| 52 : "+r" (a) | |
| 53 : "ic" ((uint8_t)(-s)) | |
| 54 ); | |
| 55 return a; | |
| 56 } | |
| 57 | |
| 58 #define NEG_USR32 NEG_USR32 | |
| 59 static inline uint32_t NEG_USR32(uint32_t a, int8_t s){ | |
| 60 __asm__ ("shrl %1, %0\n\t" | |
| 61 : "+r" (a) | |
| 62 : "ic" ((uint8_t)(-s)) | |
| 63 ); | |
| 64 return a; | |
| 65 } | |
| 66 | |
| 67 #endif /* AVCODEC_X86_MATHOPS_H */ |