repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Simple math operations | |
| 3 | * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> | |
| 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_AVR32_MATHOPS_H | |
| 23 | #define AVCODEC_AVR32_MATHOPS_H | |
| 24 | ||
| 25 | #include <stdint.h> | |
| 26 | #include "config.h" | |
| 27 | #include "libavutil/common.h" | |
| 28 | ||
| 29 | #if HAVE_INLINE_ASM | |
| 30 | ||
| 31 | #define MULL MULL | |
| 32 | static inline av_const int MULL(int a, int b, unsigned shift) | |
| 33 | { | |
| 34 | union { int64_t x; int hl[2]; } x; | |
| 35 | __asm__ ("muls.d %0, %1, %2 \n\t" | |
| 36 | "lsr %0, %3 \n\t" | |
| 37 | "or %0, %0, %m0<<%4 \n\t" | |
| 38 | : "=r"(x) : "r"(b), "r"(a), "i"(shift), "i"(32-shift)); | |
| 39 | return x.hl[1]; | |
| 40 | } | |
| 41 | ||
| 42 | #define MULH MULH | |
| 43 | static inline av_const int MULH(int a, int b) | |
| 44 | { | |
| 45 | union { int64_t x; int hl[2]; } x; | |
| 46 | __asm__ ("muls.d %0, %1, %2" : "=r"(x.x) : "r"(a), "r"(b)); | |
| 47 | return x.hl[0]; | |
| 48 | } | |
| 49 | ||
| 50 | #define MUL64 MUL64 | |
| 51 | static inline av_const int64_t MUL64(int a, int b) | |
| 52 | { | |
| 53 | int64_t x; | |
| 54 | __asm__ ("muls.d %0, %1, %2" : "=r"(x) : "r"(a), "r"(b)); | |
| 55 | return x; | |
| 56 | } | |
| 57 | ||
| 58 | static inline av_const int64_t MAC64(int64_t d, int a, int b) | |
| 59 | { | |
| 60 | __asm__ ("macs.d %0, %1, %2" : "+r"(d) : "r"(a), "r"(b)); | |
| 61 | return d; | |
| 62 | } | |
| 63 | #define MAC64(d, a, b) ((d) = MAC64(d, a, b)) | |
| 64 | #define MLS64(d, a, b) MAC64(d, -(a), b) | |
| 65 | ||
| 66 | static inline av_const int MAC16(int d, int a, int b) | |
| 67 | { | |
| 68 | __asm__ ("machh.w %0, %1:b, %2:b" : "+r"(d) : "r"(a), "r"(b)); | |
| 69 | return d; | |
| 70 | } | |
| 71 | #define MAC16(d, a, b) ((d) = MAC16(d, a, b)) | |
| 72 | #define MLS16(d, a, b) MAC16(d, -(a), b) | |
| 73 | ||
| 74 | #define MUL16 MUL16 | |
| 75 | static inline av_const int MUL16(int a, int b) | |
| 76 | { | |
| 77 | int d; | |
| 78 | __asm__ ("mulhh.w %0, %1:b, %2:b" : "=r"(d) : "r"(a), "r"(b)); | |
| 79 | return d; | |
| 80 | } | |
| 81 | ||
| 82 | #define mid_pred mid_pred | |
| 83 | static inline av_const int mid_pred(int a, int b, int c) | |
| 84 | { | |
| 85 | int m; | |
| 86 | __asm__ ("mov %0, %2 \n\t" | |
| 87 | "cp.w %1, %2 \n\t" | |
| 88 | "movgt %0, %1 \n\t" | |
| 89 | "movgt %1, %2 \n\t" | |
| 90 | "cp.w %1, %3 \n\t" | |
| 91 | "movle %1, %3 \n\t" | |
| 92 | "cp.w %0, %1 \n\t" | |
| 93 | "movgt %0, %1 \n\t" | |
| 94 | : "=&r"(m), "+r"(a) | |
| 95 | : "r"(b), "r"(c)); | |
| 96 | return m; | |
| 97 | } | |
| 98 | ||
| 99 | #endif /* HAVE_INLINE_ASM */ | |
| 100 | ||
| 101 | #endif /* AVCODEC_AVR32_MATHOPS_H */ |