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_dsp/vpx_dsp_common.h"
17#include "vpx_ports/mem.h"
18
19#ifdef __cplusplus
20extern "C" {
21#endif
22
23#define VPXMIN(x, y) (((x) < (y)) ? (x) : (y))
24#define VPXMAX(x, y) (((x) > (y)) ? (x) : (y))
25
26#if CONFIG_VP9_HIGHBITDEPTH
27// Note:
28// tran_low_t  is the datatype used for final transform coefficients.
29// tran_high_t is the datatype used for intermediate transform stages.
30typedef int64_t tran_high_t;
31typedef int32_t tran_low_t;
32#else
33// Note:
34// tran_low_t  is the datatype used for final transform coefficients.
35// tran_high_t is the datatype used for intermediate transform stages.
36typedef int32_t tran_high_t;
37typedef int16_t tran_low_t;
38#endif  // CONFIG_VP9_HIGHBITDEPTH
39
40static INLINE uint8_t clip_pixel(int val) {
41  return (val > 255) ? 255 : (val < 0) ? 0 : val;
42}
43
44static INLINE int clamp(int value, int low, int high) {
45  return value < low ? low : (value > high ? high : value);
46}
47
48static INLINE double fclamp(double value, double low, double high) {
49  return value < low ? low : (value > high ? high : value);
50}
51
52#if CONFIG_VP9_HIGHBITDEPTH
53static INLINE uint16_t clip_pixel_highbd(int val, int bd) {
54  switch (bd) {
55    case 8:
56    default:
57      return (uint16_t)clamp(val, 0, 255);
58    case 10:
59      return (uint16_t)clamp(val, 0, 1023);
60    case 12:
61      return (uint16_t)clamp(val, 0, 4095);
62  }
63}
64#endif  // CONFIG_VP9_HIGHBITDEPTH
65
66#ifdef __cplusplus
67}  // extern "C"
68#endif
69
70#endif  // VPX_DSP_COMMON_H_
71