media/libvpx/vp8/common/x86/variance_ssse3.c@ac0c01689b40 (annotated)
media/libvpx/vp8/common/x86/variance_ssse3.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.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license |
| michael@0 | 5 | * that can be found in the LICENSE file in the root of the source |
| michael@0 | 6 | * tree. An additional intellectual property rights grant can be found |
| michael@0 | 7 | * in the file PATENTS. All contributing project authors may |
| michael@0 | 8 | * be found in the AUTHORS file in the root of the source tree. |
| michael@0 | 9 | */ |
| michael@0 | 10 | |
| michael@0 | 11 | #include "vpx_config.h" |
| michael@0 | 12 | #include "vp8/common/variance.h" |
| michael@0 | 13 | #include "vp8/common/pragmas.h" |
| michael@0 | 14 | #include "vpx_ports/mem.h" |
| michael@0 | 15 | |
| michael@0 | 16 | extern unsigned int vp8_get16x16var_sse2 |
| michael@0 | 17 | ( |
| michael@0 | 18 | const unsigned char *src_ptr, |
| michael@0 | 19 | int source_stride, |
| michael@0 | 20 | const unsigned char *ref_ptr, |
| michael@0 | 21 | int recon_stride, |
| michael@0 | 22 | unsigned int *SSE, |
| michael@0 | 23 | int *Sum |
| michael@0 | 24 | ); |
| michael@0 | 25 | extern void vp8_half_horiz_vert_variance16x_h_sse2 |
| michael@0 | 26 | ( |
| michael@0 | 27 | const unsigned char *ref_ptr, |
| michael@0 | 28 | int ref_pixels_per_line, |
| michael@0 | 29 | const unsigned char *src_ptr, |
| michael@0 | 30 | int src_pixels_per_line, |
| michael@0 | 31 | unsigned int Height, |
| michael@0 | 32 | int *sum, |
| michael@0 | 33 | unsigned int *sumsquared |
| michael@0 | 34 | ); |
| michael@0 | 35 | extern void vp8_half_horiz_variance16x_h_sse2 |
| michael@0 | 36 | ( |
| michael@0 | 37 | const unsigned char *ref_ptr, |
| michael@0 | 38 | int ref_pixels_per_line, |
| michael@0 | 39 | const unsigned char *src_ptr, |
| michael@0 | 40 | int src_pixels_per_line, |
| michael@0 | 41 | unsigned int Height, |
| michael@0 | 42 | int *sum, |
| michael@0 | 43 | unsigned int *sumsquared |
| michael@0 | 44 | ); |
| michael@0 | 45 | extern void vp8_half_vert_variance16x_h_sse2 |
| michael@0 | 46 | ( |
| michael@0 | 47 | const unsigned char *ref_ptr, |
| michael@0 | 48 | int ref_pixels_per_line, |
| michael@0 | 49 | const unsigned char *src_ptr, |
| michael@0 | 50 | int src_pixels_per_line, |
| michael@0 | 51 | unsigned int Height, |
| michael@0 | 52 | int *sum, |
| michael@0 | 53 | unsigned int *sumsquared |
| michael@0 | 54 | ); |
| michael@0 | 55 | extern void vp8_filter_block2d_bil_var_ssse3 |
| michael@0 | 56 | ( |
| michael@0 | 57 | const unsigned char *ref_ptr, |
| michael@0 | 58 | int ref_pixels_per_line, |
| michael@0 | 59 | const unsigned char *src_ptr, |
| michael@0 | 60 | int src_pixels_per_line, |
| michael@0 | 61 | unsigned int Height, |
| michael@0 | 62 | int xoffset, |
| michael@0 | 63 | int yoffset, |
| michael@0 | 64 | int *sum, |
| michael@0 | 65 | unsigned int *sumsquared |
| michael@0 | 66 | ); |
| michael@0 | 67 | |
| michael@0 | 68 | unsigned int vp8_sub_pixel_variance16x16_ssse3 |
| michael@0 | 69 | ( |
| michael@0 | 70 | const unsigned char *src_ptr, |
| michael@0 | 71 | int src_pixels_per_line, |
| michael@0 | 72 | int xoffset, |
| michael@0 | 73 | int yoffset, |
| michael@0 | 74 | const unsigned char *dst_ptr, |
| michael@0 | 75 | int dst_pixels_per_line, |
| michael@0 | 76 | unsigned int *sse |
| michael@0 | 77 | ) |
| michael@0 | 78 | { |
| michael@0 | 79 | int xsum0; |
| michael@0 | 80 | unsigned int xxsum0; |
| michael@0 | 81 | |
| michael@0 | 82 | /* note we could avoid these if statements if the calling function |
| michael@0 | 83 | * just called the appropriate functions inside. |
| michael@0 | 84 | */ |
| michael@0 | 85 | if (xoffset == 4 && yoffset == 0) |
| michael@0 | 86 | { |
| michael@0 | 87 | vp8_half_horiz_variance16x_h_sse2( |
| michael@0 | 88 | src_ptr, src_pixels_per_line, |
| michael@0 | 89 | dst_ptr, dst_pixels_per_line, 16, |
| michael@0 | 90 | &xsum0, &xxsum0); |
| michael@0 | 91 | } |
| michael@0 | 92 | else if (xoffset == 0 && yoffset == 4) |
| michael@0 | 93 | { |
| michael@0 | 94 | vp8_half_vert_variance16x_h_sse2( |
| michael@0 | 95 | src_ptr, src_pixels_per_line, |
| michael@0 | 96 | dst_ptr, dst_pixels_per_line, 16, |
| michael@0 | 97 | &xsum0, &xxsum0); |
| michael@0 | 98 | } |
| michael@0 | 99 | else if (xoffset == 4 && yoffset == 4) |
| michael@0 | 100 | { |
| michael@0 | 101 | vp8_half_horiz_vert_variance16x_h_sse2( |
| michael@0 | 102 | src_ptr, src_pixels_per_line, |
| michael@0 | 103 | dst_ptr, dst_pixels_per_line, 16, |
| michael@0 | 104 | &xsum0, &xxsum0); |
| michael@0 | 105 | } |
| michael@0 | 106 | else |
| michael@0 | 107 | { |
| michael@0 | 108 | vp8_filter_block2d_bil_var_ssse3( |
| michael@0 | 109 | src_ptr, src_pixels_per_line, |
| michael@0 | 110 | dst_ptr, dst_pixels_per_line, 16, |
| michael@0 | 111 | xoffset, yoffset, |
| michael@0 | 112 | &xsum0, &xxsum0); |
| michael@0 | 113 | } |
| michael@0 | 114 | |
| michael@0 | 115 | *sse = xxsum0; |
| michael@0 | 116 | return (xxsum0 - (((unsigned int)xsum0 * xsum0) >> 8)); |
| michael@0 | 117 | } |
| michael@0 | 118 | |
| michael@0 | 119 | unsigned int vp8_sub_pixel_variance16x8_ssse3 |
| michael@0 | 120 | ( |
| michael@0 | 121 | const unsigned char *src_ptr, |
| michael@0 | 122 | int src_pixels_per_line, |
| michael@0 | 123 | int xoffset, |
| michael@0 | 124 | int yoffset, |
| michael@0 | 125 | const unsigned char *dst_ptr, |
| michael@0 | 126 | int dst_pixels_per_line, |
| michael@0 | 127 | unsigned int *sse |
| michael@0 | 128 | |
| michael@0 | 129 | ) |
| michael@0 | 130 | { |
| michael@0 | 131 | int xsum0; |
| michael@0 | 132 | unsigned int xxsum0; |
| michael@0 | 133 | |
| michael@0 | 134 | if (xoffset == 4 && yoffset == 0) |
| michael@0 | 135 | { |
| michael@0 | 136 | vp8_half_horiz_variance16x_h_sse2( |
| michael@0 | 137 | src_ptr, src_pixels_per_line, |
| michael@0 | 138 | dst_ptr, dst_pixels_per_line, 8, |
| michael@0 | 139 | &xsum0, &xxsum0); |
| michael@0 | 140 | } |
| michael@0 | 141 | else if (xoffset == 0 && yoffset == 4) |
| michael@0 | 142 | { |
| michael@0 | 143 | vp8_half_vert_variance16x_h_sse2( |
| michael@0 | 144 | src_ptr, src_pixels_per_line, |
| michael@0 | 145 | dst_ptr, dst_pixels_per_line, 8, |
| michael@0 | 146 | &xsum0, &xxsum0); |
| michael@0 | 147 | } |
| michael@0 | 148 | else if (xoffset == 4 && yoffset == 4) |
| michael@0 | 149 | { |
| michael@0 | 150 | vp8_half_horiz_vert_variance16x_h_sse2( |
| michael@0 | 151 | src_ptr, src_pixels_per_line, |
| michael@0 | 152 | dst_ptr, dst_pixels_per_line, 8, |
| michael@0 | 153 | &xsum0, &xxsum0); |
| michael@0 | 154 | } |
| michael@0 | 155 | else |
| michael@0 | 156 | { |
| michael@0 | 157 | vp8_filter_block2d_bil_var_ssse3( |
| michael@0 | 158 | src_ptr, src_pixels_per_line, |
| michael@0 | 159 | dst_ptr, dst_pixels_per_line, 8, |
| michael@0 | 160 | xoffset, yoffset, |
| michael@0 | 161 | &xsum0, &xxsum0); |
| michael@0 | 162 | } |
| michael@0 | 163 | |
| michael@0 | 164 | *sse = xxsum0; |
| michael@0 | 165 | return (xxsum0 - (((unsigned int)xsum0 * xsum0) >> 7)); |
| michael@0 | 166 | } |
