84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/*
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* Copyright © 2018, VideoLAN and dav1d authors
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* Copyright © 2018, Two Orioles, LLC
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef DAV1D_COMMON_INTOPS_H
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#define DAV1D_COMMON_INTOPS_H
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#include <stdint.h>
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#include "common/attributes.h"
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static inline int imax(const int a, const int b) {
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return a > b ? a : b;
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}
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static inline int imin(const int a, const int b) {
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return a < b ? a : b;
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}
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static inline unsigned umax(const unsigned a, const unsigned b) {
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return a > b ? a : b;
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}
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static inline unsigned umin(const unsigned a, const unsigned b) {
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return a < b ? a : b;
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}
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static inline int iclip(const int v, const int min, const int max) {
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return v < min ? min : v > max ? max : v;
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}
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static inline int iclip_u8(const int v) {
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return iclip(v, 0, 255);
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}
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static inline int apply_sign(const int v, const int s) {
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return s < 0 ? -v : v;
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}
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static inline int apply_sign64(const int v, const int64_t s) {
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return s < 0 ? -v : v;
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}
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static inline int ulog2(const unsigned v) {
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return 31 - clz(v);
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}
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static inline int u64log2(const uint64_t v) {
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return 63 - clzll(v);
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}
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static inline unsigned inv_recenter(const unsigned r, const unsigned v) {
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if (v > (r << 1))
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return v;
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else if ((v & 1) == 0)
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return (v >> 1) + r;
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else
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return r - ((v + 1) >> 1);
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}
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#endif /* DAV1D_COMMON_INTOPS_H */
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