chromium/third_party/libaom/source/libaom/aom_dsp/recenter.h

/*
 * Copyright (c) 2018, Alliance for Open Media. All rights reserved.
 *
 * This source code is subject to the terms of the BSD 2 Clause License and
 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
 * was not distributed with this source code in the LICENSE file, you can
 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
 * Media Patent License 1.0 was not distributed with this source code in the
 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
 */

#ifndef AOM_AOM_DSP_RECENTER_H_
#define AOM_AOM_DSP_RECENTER_H_

#include "config/aom_config.h"

#include "aom/aom_integer.h"

// Inverse recenters a non-negative literal v around a reference r
static inline uint16_t inv_recenter_nonneg(uint16_t r, uint16_t v) { … }

// Inverse recenters a non-negative literal v in [0, n-1] around a
// reference r also in [0, n-1]
static inline uint16_t inv_recenter_finite_nonneg(uint16_t n, uint16_t r,
                                                  uint16_t v) { … }

// Recenters a non-negative literal v around a reference r
static inline uint16_t recenter_nonneg(uint16_t r, uint16_t v) { … }

// Recenters a non-negative literal v in [0, n-1] around a
// reference r also in [0, n-1]
static inline uint16_t recenter_finite_nonneg(uint16_t n, uint16_t r,
                                              uint16_t v) { … }

#endif  // AOM_AOM_DSP_RECENTER_H_