media/libvpx/vp9/encoder/vp9_variance.h@ac0c01689b40
media/libvpx/vp9/encoder/vp9_variance.h
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
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 */
11 #ifndef VP9_ENCODER_VP9_VARIANCE_H_
12 #define VP9_ENCODER_VP9_VARIANCE_H_
14 #include "vpx/vpx_integer.h"
15 // #include "./vpx_config.h"
17 void variance(const uint8_t *src_ptr,
18 int source_stride,
19 const uint8_t *ref_ptr,
20 int recon_stride,
21 int w,
22 int h,
23 unsigned int *sse,
24 int *sum);
26 typedef unsigned int(*vp9_sad_fn_t)(const uint8_t *src_ptr,
27 int source_stride,
28 const uint8_t *ref_ptr,
29 int ref_stride,
30 unsigned int max_sad);
32 typedef unsigned int(*vp9_sad_avg_fn_t)(const uint8_t *src_ptr,
33 int source_stride,
34 const uint8_t *ref_ptr,
35 int ref_stride,
36 const uint8_t *second_pred,
37 unsigned int max_sad);
39 typedef void (*vp9_sad_multi_fn_t)(const uint8_t *src_ptr,
40 int source_stride,
41 const uint8_t *ref_ptr,
42 int ref_stride,
43 unsigned int *sad_array);
45 typedef void (*vp9_sad_multi1_fn_t)(const uint8_t *src_ptr,
46 int source_stride,
47 const uint8_t *ref_ptr,
48 int ref_stride,
49 unsigned int *sad_array);
51 typedef void (*vp9_sad_multi_d_fn_t)(const uint8_t *src_ptr,
52 int source_stride,
53 const uint8_t* const ref_ptr[],
54 int ref_stride, unsigned int *sad_array);
56 typedef unsigned int (*vp9_variance_fn_t)(const uint8_t *src_ptr,
57 int source_stride,
58 const uint8_t *ref_ptr,
59 int ref_stride,
60 unsigned int *sse);
62 typedef unsigned int (*vp9_subpixvariance_fn_t)(const uint8_t *src_ptr,
63 int source_stride,
64 int xoffset,
65 int yoffset,
66 const uint8_t *ref_ptr,
67 int Refstride,
68 unsigned int *sse);
70 typedef unsigned int (*vp9_subp_avg_variance_fn_t)(const uint8_t *src_ptr,
71 int source_stride,
72 int xoffset,
73 int yoffset,
74 const uint8_t *ref_ptr,
75 int Refstride,
76 unsigned int *sse,
77 const uint8_t *second_pred);
79 typedef unsigned int (*vp9_getmbss_fn_t)(const short *);
81 typedef unsigned int (*vp9_get16x16prederror_fn_t)(const uint8_t *src_ptr,
82 int source_stride,
83 const uint8_t *ref_ptr,
84 int ref_stride);
86 typedef struct vp9_variance_vtable {
87 vp9_sad_fn_t sdf;
88 vp9_sad_avg_fn_t sdaf;
89 vp9_variance_fn_t vf;
90 vp9_subpixvariance_fn_t svf;
91 vp9_subp_avg_variance_fn_t svaf;
92 vp9_variance_fn_t svf_halfpix_h;
93 vp9_variance_fn_t svf_halfpix_v;
94 vp9_variance_fn_t svf_halfpix_hv;
95 vp9_sad_multi_fn_t sdx3f;
96 vp9_sad_multi1_fn_t sdx8f;
97 vp9_sad_multi_d_fn_t sdx4df;
98 } vp9_variance_fn_ptr_t;
100 static void comp_avg_pred(uint8_t *comp_pred, const uint8_t *pred, int width,
101 int height, const uint8_t *ref, int ref_stride) {
102 int i, j;
104 for (i = 0; i < height; i++) {
105 for (j = 0; j < width; j++) {
106 int tmp;
107 tmp = pred[j] + ref[j];
108 comp_pred[j] = (tmp + 1) >> 1;
109 }
110 comp_pred += width;
111 pred += width;
112 ref += ref_stride;
113 }
114 }
115 #endif // VP9_ENCODER_VP9_VARIANCE_H_
