1/*
2 *  Copyright (c) 2015 The WebM project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#ifndef VPX_DSP_COMMON_H_
12#define VPX_DSP_COMMON_H_
13
14#include "./vpx_config.h"
15#include "vpx/vpx_integer.h"
16#include "vpx_ports/mem.h"
17
18#ifdef __cplusplus
19extern "C" {
20#endif
21
22#define MIN(x, y) (((x) < (y)) ? (x) : (y))
23#define MAX(x, y) (((x) > (y)) ? (x) : (y))
24
25#if CONFIG_VP9_HIGHBITDEPTH
26// Note:
27// tran_low_t  is the datatype used for final transform coefficients.
28// tran_high_t is the datatype used for intermediate transform stages.
29typedef int64_t tran_high_t;
30typedef int32_t tran_low_t;
31#else
32// Note:
33// tran_low_t  is the datatype used for final transform coefficients.
34// tran_high_t is the datatype used for intermediate transform stages.
35typedef int32_t tran_high_t;
36typedef int16_t tran_low_t;
37#endif  // CONFIG_VP9_HIGHBITDEPTH
38
39static INLINE uint8_t clip_pixel(int val) {
40  return (val > 255) ? 255 : (val < 0) ? 0 : val;
41}
42
43static INLINE int clamp(int value, int low, int high) {
44  return value < low ? low : (value > high ? high : value);
45}
46
47static INLINE double fclamp(double value, double low, double high) {
48  return value < low ? low : (value > high ? high : value);
49}
50
51#if CONFIG_VP9_HIGHBITDEPTH
52static INLINE uint16_t clip_pixel_highbd(int val, int bd) {
53  switch (bd) {
54    case 8:
55    default:
56      return (uint16_t)clamp(val, 0, 255);
57    case 10:
58      return (uint16_t)clamp(val, 0, 1023);
59    case 12:
60      return (uint16_t)clamp(val, 0, 4095);
61  }
62}
63#endif  // CONFIG_VP9_HIGHBITDEPTH
64
65#ifdef __cplusplus
66}  // extern "C"
67#endif
68
69#endif  // VPX_DSP_COMMON_H_
70