/* * 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 mul32(int32_t a, int32_t b) { return mul__(a, b, 32); } static inline int32_t clip23(int32_t a) { return av_clip_intp2(a, 23); } #endif