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
19 extern "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.
29 typedef int64_t tran_high_t;
30 typedef 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.
35 typedef int32_t tran_high_t;
36 typedef int16_t tran_low_t;
37 #endif // CONFIG_VP9_HIGHBITDEPTH
38
clip_pixel(int val)39 static INLINE uint8_t clip_pixel(int val) {
40 return (val > 255) ? 255 : (val < 0) ? 0 : val;
41 }
42
clamp(int value,int low,int high)43 static INLINE int clamp(int value, int low, int high) {
44 return value < low ? low : (value > high ? high : value);
45 }
46
fclamp(double value,double low,double high)47 static 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
clip_pixel_highbd(int val,int bd)52 static 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