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_VPX_DSP_COMMON_H_
12#define VPX_DSP_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 VPXMIN(x, y) (((x) < (y)) ? (x) : (y))
23#define VPXMAX(x, y) (((x) > (y)) ? (x) : (y))
24
25#define VPX_SWAP(type, a, b) \
26  do {                       \
27    type c = (b);            \
28    b = a;                   \
29    a = c;                   \
30  } while (0)
31
32#if CONFIG_VP9_HIGHBITDEPTH
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 int64_t tran_high_t;
37typedef int32_t tran_low_t;
38#else
39// Note:
40// tran_low_t  is the datatype used for final transform coefficients.
41// tran_high_t is the datatype used for intermediate transform stages.
42typedef int32_t tran_high_t;
43typedef int16_t tran_low_t;
44#endif  // CONFIG_VP9_HIGHBITDEPTH
45
46typedef int16_t tran_coef_t;
47
48static INLINE uint8_t clip_pixel(int val) {
49  return (val > 255) ? 255 : (val < 0) ? 0 : val;
50}
51
52static INLINE int clamp(int value, int low, int high) {
53  return value < low ? low : (value > high ? high : value);
54}
55
56static INLINE double fclamp(double value, double low, double high) {
57  return value < low ? low : (value > high ? high : value);
58}
59
60static INLINE uint16_t clip_pixel_highbd(int val, int bd) {
61  switch (bd) {
62    case 8:
63    default: return (uint16_t)clamp(val, 0, 255);
64    case 10: return (uint16_t)clamp(val, 0, 1023);
65    case 12: return (uint16_t)clamp(val, 0, 4095);
66  }
67}
68
69#ifdef __cplusplus
70}  // extern "C"
71#endif
72
73#endif  // VPX_DSP_VPX_DSP_COMMON_H_
74