media/libvpx/vp9/encoder/x86/vp9_variance_mmx.c@ac0c01689b40
media/libvpx/vp9/encoder/x86/vp9_variance_mmx.c
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 #include "./vpx_config.h"
12 #include "vp9/encoder/vp9_variance.h"
13 #include "vp9/common/vp9_pragmas.h"
14 #include "vpx_ports/mem.h"
16 extern unsigned int vp9_get_mb_ss_mmx(const int16_t *src_ptr);
17 extern unsigned int vp9_get8x8var_mmx
18 (
19 const unsigned char *src_ptr,
20 int source_stride,
21 const unsigned char *ref_ptr,
22 int recon_stride,
23 unsigned int *SSE,
24 int *Sum
25 );
26 extern unsigned int vp9_get4x4var_mmx
27 (
28 const unsigned char *src_ptr,
29 int source_stride,
30 const unsigned char *ref_ptr,
31 int recon_stride,
32 unsigned int *SSE,
33 int *Sum
34 );
36 unsigned int vp9_variance4x4_mmx(
37 const unsigned char *src_ptr,
38 int source_stride,
39 const unsigned char *ref_ptr,
40 int recon_stride,
41 unsigned int *sse) {
42 unsigned int var;
43 int avg;
45 vp9_get4x4var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &var, &avg);
46 *sse = var;
47 return (var - (((unsigned int)avg * avg) >> 4));
48 }
50 unsigned int vp9_variance8x8_mmx(
51 const unsigned char *src_ptr,
52 int source_stride,
53 const unsigned char *ref_ptr,
54 int recon_stride,
55 unsigned int *sse) {
56 unsigned int var;
57 int avg;
59 vp9_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &var, &avg);
60 *sse = var;
62 return (var - (((unsigned int)avg * avg) >> 6));
63 }
65 unsigned int vp9_mse16x16_mmx(
66 const unsigned char *src_ptr,
67 int source_stride,
68 const unsigned char *ref_ptr,
69 int recon_stride,
70 unsigned int *sse) {
71 unsigned int sse0, sse1, sse2, sse3, var;
72 int sum0, sum1, sum2, sum3;
75 vp9_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &sse0,
76 &sum0);
77 vp9_get8x8var_mmx(src_ptr + 8, source_stride, ref_ptr + 8, recon_stride,
78 &sse1, &sum1);
79 vp9_get8x8var_mmx(src_ptr + 8 * source_stride, source_stride,
80 ref_ptr + 8 * recon_stride, recon_stride, &sse2, &sum2);
81 vp9_get8x8var_mmx(src_ptr + 8 * source_stride + 8, source_stride,
82 ref_ptr + 8 * recon_stride + 8, recon_stride, &sse3, &sum3);
84 var = sse0 + sse1 + sse2 + sse3;
85 *sse = var;
86 return var;
87 }
90 unsigned int vp9_variance16x16_mmx(
91 const unsigned char *src_ptr,
92 int source_stride,
93 const unsigned char *ref_ptr,
94 int recon_stride,
95 unsigned int *sse) {
96 unsigned int sse0, sse1, sse2, sse3, var;
97 int sum0, sum1, sum2, sum3, avg;
99 vp9_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &sse0,
100 &sum0);
101 vp9_get8x8var_mmx(src_ptr + 8, source_stride, ref_ptr + 8, recon_stride,
102 &sse1, &sum1);
103 vp9_get8x8var_mmx(src_ptr + 8 * source_stride, source_stride,
104 ref_ptr + 8 * recon_stride, recon_stride, &sse2, &sum2);
105 vp9_get8x8var_mmx(src_ptr + 8 * source_stride + 8, source_stride,
106 ref_ptr + 8 * recon_stride + 8, recon_stride, &sse3, &sum3);
108 var = sse0 + sse1 + sse2 + sse3;
109 avg = sum0 + sum1 + sum2 + sum3;
110 *sse = var;
111 return (var - (((unsigned int)avg * avg) >> 8));
112 }
114 unsigned int vp9_variance16x8_mmx(
115 const unsigned char *src_ptr,
116 int source_stride,
117 const unsigned char *ref_ptr,
118 int recon_stride,
119 unsigned int *sse) {
120 unsigned int sse0, sse1, var;
121 int sum0, sum1, avg;
123 vp9_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &sse0,
124 &sum0);
125 vp9_get8x8var_mmx(src_ptr + 8, source_stride, ref_ptr + 8, recon_stride,
126 &sse1, &sum1);
128 var = sse0 + sse1;
129 avg = sum0 + sum1;
130 *sse = var;
131 return (var - (((unsigned int)avg * avg) >> 7));
132 }
135 unsigned int vp9_variance8x16_mmx(
136 const unsigned char *src_ptr,
137 int source_stride,
138 const unsigned char *ref_ptr,
139 int recon_stride,
140 unsigned int *sse) {
141 unsigned int sse0, sse1, var;
142 int sum0, sum1, avg;
144 vp9_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &sse0,
145 &sum0);
146 vp9_get8x8var_mmx(src_ptr + 8 * source_stride, source_stride,
147 ref_ptr + 8 * recon_stride, recon_stride, &sse1, &sum1);
149 var = sse0 + sse1;
150 avg = sum0 + sum1;
151 *sse = var;
153 return (var - (((unsigned int)avg * avg) >> 7));
154 }
