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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_VARIANCE_H_
12 #define VPX_DSP_VARIANCE_H_
13 
14 #include "./vpx_config.h"
15 
16 #include "vpx/vpx_integer.h"
17 
18 #ifdef __cplusplus
19 extern "C" {
20 #endif
21 
22 #define FILTER_BITS 7
23 #define FILTER_WEIGHT 128
24 
25 typedef unsigned int (*vpx_sad_fn_t)(const uint8_t *a, int a_stride,
26                                      const uint8_t *b_ptr, int b_stride);
27 
28 typedef unsigned int (*vpx_sad_avg_fn_t)(const uint8_t *a_ptr, int a_stride,
29                                          const uint8_t *b_ptr, int b_stride,
30                                          const uint8_t *second_pred);
31 
32 typedef void (*vp8_copy32xn_fn_t)(const uint8_t *a, int a_stride, uint8_t *b,
33                                   int b_stride, int n);
34 
35 typedef void (*vpx_sad_multi_fn_t)(const uint8_t *a, int a_stride,
36                                    const uint8_t *b, int b_stride,
37                                    unsigned int *sad_array);
38 
39 typedef void (*vpx_sad_multi_d_fn_t)(const uint8_t *a, int a_stride,
40                                      const uint8_t *const b_array[],
41                                      int b_stride, unsigned int *sad_array);
42 
43 typedef unsigned int (*vpx_variance_fn_t)(const uint8_t *a, int a_stride,
44                                           const uint8_t *b, int b_stride,
45                                           unsigned int *sse);
46 
47 typedef unsigned int (*vpx_subpixvariance_fn_t)(const uint8_t *a, int a_stride,
48                                                 int xoffset, int yoffset,
49                                                 const uint8_t *b, int b_stride,
50                                                 unsigned int *sse);
51 
52 typedef unsigned int (*vpx_subp_avg_variance_fn_t)(
53     const uint8_t *a_ptr, int a_stride, int xoffset, int yoffset,
54     const uint8_t *b_ptr, int b_stride, unsigned int *sse,
55     const uint8_t *second_pred);
56 #if CONFIG_VP8
57 typedef struct variance_vtable {
58   vpx_sad_fn_t sdf;
59   vpx_variance_fn_t vf;
60   vpx_subpixvariance_fn_t svf;
61   vpx_sad_multi_fn_t sdx3f;
62   vpx_sad_multi_fn_t sdx8f;
63   vpx_sad_multi_d_fn_t sdx4df;
64 #if ARCH_X86 || ARCH_X86_64
65   vp8_copy32xn_fn_t copymem;
66 #endif
67 } vp8_variance_fn_ptr_t;
68 #endif  // CONFIG_VP8
69 
70 #if CONFIG_VP9
71 typedef struct vp9_variance_vtable {
72   vpx_sad_fn_t sdf;
73   vpx_sad_avg_fn_t sdaf;
74   vpx_variance_fn_t vf;
75   vpx_subpixvariance_fn_t svf;
76   vpx_subp_avg_variance_fn_t svaf;
77   vpx_sad_multi_fn_t sdx3f;
78   vpx_sad_multi_fn_t sdx8f;
79   vpx_sad_multi_d_fn_t sdx4df;
80 } vp9_variance_fn_ptr_t;
81 #endif  // CONFIG_VP9
82 
83 #ifdef __cplusplus
84 }  // extern "C"
85 #endif
86 
87 #endif  // VPX_DSP_VARIANCE_H_
88