mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2016 foo86
|
||
|
|
*
|
||
|
|
* 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_DCAMATH_H
|
||
|
|
#define AVCODEC_DCAMATH_H
|
||
|
|
|
||
|
|
#include "libavutil/common.h"
|
||
|
|
#include "libavutil/intmath.h"
|
||
|
|
|
||
|
|
static inline int32_t norm__(int64_t a, int bits)
|
||
|
|
{
|
||
|
|
if (bits > 0)
|
||
|
|
return (int32_t)((a + (INT64_C(1) << (bits - 1))) >> bits);
|
||
|
|
else
|
||
|
|
return (int32_t)a;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int32_t mul__(int32_t a, int32_t b, int bits)
|
||
|
|
{
|
||
|
|
return norm__((int64_t)a * b, bits);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int32_t norm13(int64_t a) { return norm__(a, 13); }
|
||
|
|
static inline int32_t norm16(int64_t a) { return norm__(a, 16); }
|
||
|
|
static inline int32_t norm20(int64_t a) { return norm__(a, 20); }
|
||
|
|
static inline int32_t norm21(int64_t a) { return norm__(a, 21); }
|
||
|
|
static inline int32_t norm23(int64_t a) { return norm__(a, 23); }
|
||
|
|
|
||
|
|
static inline int32_t mul15(int32_t a, int32_t b) { return mul__(a, b, 15); }
|
||
|
|
static inline int32_t mul16(int32_t a, int32_t b) { return mul__(a, b, 16); }
|
||
|
|
static inline int32_t mul17(int32_t a, int32_t b) { return mul__(a, b, 17); }
|
||
|
|
static inline int32_t mul22(int32_t a, int32_t b) { return mul__(a, b, 22); }
|
||
|
|
static inline int32_t mul23(int32_t a, int32_t b) { return mul__(a, b, 23); }
|
||
|
|
static inline int32_t mul31(int32_t a, int32_t b) { return mul__(a, b, 31); }
|
||
|
|
|
||
|
|
static inline int32_t clip23(int32_t a) { return av_clip_intp2(a, 23); }
|
||
|
|
|
||
|
|
#endif
|