1 /*
2  *  Copyright (c) 2010 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 VP9_ENCODER_VP9_VARIANCE_H_
12 #define VP9_ENCODER_VP9_VARIANCE_H_
13 
14 #include "vpx/vpx_integer.h"
15 
16 #ifdef __cplusplus
17 extern "C" {
18 #endif
19 
20 void variance(const uint8_t *a, int a_stride,
21               const uint8_t *b, int b_stride,
22               int  w, int  h,
23               unsigned int *sse, int *sum);
24 
25 typedef unsigned int(*vp9_sad_fn_t)(const uint8_t *src_ptr,
26                                     int source_stride,
27                                     const uint8_t *ref_ptr,
28                                     int ref_stride);
29 
30 typedef unsigned int(*vp9_sad_avg_fn_t)(const uint8_t *src_ptr,
31                                         int source_stride,
32                                         const uint8_t *ref_ptr,
33                                         int ref_stride,
34                                         const uint8_t *second_pred);
35 
36 typedef void (*vp9_sad_multi_fn_t)(const uint8_t *src_ptr,
37                                    int source_stride,
38                                    const uint8_t *ref_ptr,
39                                    int  ref_stride,
40                                    unsigned int *sad_array);
41 
42 typedef void (*vp9_sad_multi_d_fn_t)(const uint8_t *src_ptr,
43                                      int source_stride,
44                                      const uint8_t* const ref_ptr[],
45                                      int  ref_stride, unsigned int *sad_array);
46 
47 typedef unsigned int (*vp9_variance_fn_t)(const uint8_t *src_ptr,
48                                           int source_stride,
49                                           const uint8_t *ref_ptr,
50                                           int ref_stride,
51                                           unsigned int *sse);
52 
53 typedef unsigned int (*vp9_subpixvariance_fn_t)(const uint8_t *src_ptr,
54                                                 int source_stride,
55                                                 int xoffset,
56                                                 int yoffset,
57                                                 const uint8_t *ref_ptr,
58                                                 int Refstride,
59                                                 unsigned int *sse);
60 
61 typedef unsigned int (*vp9_subp_avg_variance_fn_t)(const uint8_t *src_ptr,
62                                                    int source_stride,
63                                                    int xoffset,
64                                                    int yoffset,
65                                                    const uint8_t *ref_ptr,
66                                                    int Refstride,
67                                                    unsigned int *sse,
68                                                    const uint8_t *second_pred);
69 
70 typedef struct vp9_variance_vtable {
71   vp9_sad_fn_t               sdf;
72   vp9_sad_avg_fn_t           sdaf;
73   vp9_variance_fn_t          vf;
74   vp9_subpixvariance_fn_t    svf;
75   vp9_subp_avg_variance_fn_t svaf;
76   vp9_sad_multi_fn_t         sdx3f;
77   vp9_sad_multi_fn_t         sdx8f;
78   vp9_sad_multi_d_fn_t       sdx4df;
79 } vp9_variance_fn_ptr_t;
80 
81 void vp9_comp_avg_pred(uint8_t *comp_pred, const uint8_t *pred, int width,
82                        int height, const uint8_t *ref, int ref_stride);
83 
84 #ifdef __cplusplus
85 }  // extern "C"
86 #endif
87 
88 #endif  // VP9_ENCODER_VP9_VARIANCE_H_
89