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_VPX_DSP_VARIANCE_H_
12 #define VPX_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 *src_ptr, int src_stride,
26                                      const uint8_t *ref_ptr, int ref_stride);
27 
28 typedef unsigned int (*vpx_sad_avg_fn_t)(const uint8_t *src_ptr, int src_stride,
29                                          const uint8_t *ref_ptr, int ref_stride,
30                                          const uint8_t *second_pred);
31 
32 typedef void (*vp8_copy32xn_fn_t)(const uint8_t *src_ptr, int src_stride,
33                                   uint8_t *ref_ptr, int ref_stride, int n);
34 
35 typedef void (*vpx_sad_multi_fn_t)(const uint8_t *src_ptr, int src_stride,
36                                    const uint8_t *ref_ptr, int ref_stride,
37                                    unsigned int *sad_array);
38 
39 typedef void (*vpx_sad_multi_d_fn_t)(const uint8_t *src_ptr, int src_stride,
40                                      const uint8_t *const b_array[],
41                                      int ref_stride, unsigned int *sad_array);
42 
43 typedef unsigned int (*vpx_variance_fn_t)(const uint8_t *src_ptr,
44                                           int src_stride,
45                                           const uint8_t *ref_ptr,
46                                           int ref_stride, unsigned int *sse);
47 
48 typedef unsigned int (*vpx_subpixvariance_fn_t)(
49     const uint8_t *src_ptr, int src_stride, int x_offset, int y_offset,
50     const uint8_t *ref_ptr, int ref_stride, unsigned int *sse);
51 
52 typedef unsigned int (*vpx_subp_avg_variance_fn_t)(
53     const uint8_t *src_ptr, int src_stride, int x_offset, int y_offset,
54     const uint8_t *ref_ptr, int ref_stride, unsigned int *sse,
55     const uint8_t *second_pred);
56 
57 #if CONFIG_VP8
58 typedef struct variance_vtable {
59   vpx_sad_fn_t sdf;
60   vpx_variance_fn_t vf;
61   vpx_subpixvariance_fn_t svf;
62   vpx_sad_multi_fn_t sdx3f;
63   vpx_sad_multi_fn_t sdx8f;
64   vpx_sad_multi_d_fn_t sdx4df;
65 #if VPX_ARCH_X86 || VPX_ARCH_X86_64
66   vp8_copy32xn_fn_t copymem;
67 #endif
68 } vp8_variance_fn_ptr_t;
69 #endif  // CONFIG_VP8
70 
71 #if CONFIG_VP9
72 typedef struct vp9_variance_vtable {
73   vpx_sad_fn_t sdf;
74   vpx_sad_avg_fn_t sdaf;
75   vpx_variance_fn_t vf;
76   vpx_subpixvariance_fn_t svf;
77   vpx_subp_avg_variance_fn_t svaf;
78   vpx_sad_multi_d_fn_t sdx4df;
79   vpx_sad_multi_fn_t sdx8f;
80 } vp9_variance_fn_ptr_t;
81 #endif  // CONFIG_VP9
82 
83 #ifdef __cplusplus
84 }  // extern "C"
85 #endif
86 
87 #endif  // VPX_VPX_DSP_VARIANCE_H_
88