media/libyuv/source/compare_posix.cc@b8a032363ba2
media/libyuv/source/compare_posix.cc
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
1 /*
2 * Copyright 2012 The LibYuv 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 "libyuv/basic_types.h"
12 #include "libyuv/row.h"
14 #ifdef __cplusplus
15 namespace libyuv {
16 extern "C" {
17 #endif
19 #if !defined(LIBYUV_DISABLE_X86) && (defined(__x86_64__) || defined(__i386__))
21 uint32 SumSquareError_SSE2(const uint8* src_a, const uint8* src_b, int count) {
22 uint32 sse;
23 asm volatile ( // NOLINT
24 "pxor %%xmm0,%%xmm0 \n"
25 "pxor %%xmm5,%%xmm5 \n"
26 LABELALIGN
27 "1: \n"
28 "movdqa " MEMACCESS(0) ",%%xmm1 \n"
29 "lea " MEMLEA(0x10, 0) ",%0 \n"
30 "movdqa " MEMACCESS(1) ",%%xmm2 \n"
31 "lea " MEMLEA(0x10, 1) ",%1 \n"
32 "sub $0x10,%2 \n"
33 "movdqa %%xmm1,%%xmm3 \n"
34 "psubusb %%xmm2,%%xmm1 \n"
35 "psubusb %%xmm3,%%xmm2 \n"
36 "por %%xmm2,%%xmm1 \n"
37 "movdqa %%xmm1,%%xmm2 \n"
38 "punpcklbw %%xmm5,%%xmm1 \n"
39 "punpckhbw %%xmm5,%%xmm2 \n"
40 "pmaddwd %%xmm1,%%xmm1 \n"
41 "pmaddwd %%xmm2,%%xmm2 \n"
42 "paddd %%xmm1,%%xmm0 \n"
43 "paddd %%xmm2,%%xmm0 \n"
44 "jg 1b \n"
46 "pshufd $0xee,%%xmm0,%%xmm1 \n"
47 "paddd %%xmm1,%%xmm0 \n"
48 "pshufd $0x1,%%xmm0,%%xmm1 \n"
49 "paddd %%xmm1,%%xmm0 \n"
50 "movd %%xmm0,%3 \n"
52 : "+r"(src_a), // %0
53 "+r"(src_b), // %1
54 "+r"(count), // %2
55 "=g"(sse) // %3
56 :
57 : "memory", "cc"
58 #if defined(__SSE2__)
59 , "xmm0", "xmm1", "xmm2", "xmm3", "xmm5"
60 #endif
61 ); // NOLINT
62 return sse;
63 }
65 #endif // defined(__x86_64__) || defined(__i386__)
67 #if !defined(LIBYUV_DISABLE_X86) && \
68 (defined(__x86_64__) || (defined(__i386__) && !defined(__pic__)))
69 #define HAS_HASHDJB2_SSE41
70 static uvec32 kHash16x33 = { 0x92d9e201, 0, 0, 0 }; // 33 ^ 16
71 static uvec32 kHashMul0 = {
72 0x0c3525e1, // 33 ^ 15
73 0xa3476dc1, // 33 ^ 14
74 0x3b4039a1, // 33 ^ 13
75 0x4f5f0981, // 33 ^ 12
76 };
77 static uvec32 kHashMul1 = {
78 0x30f35d61, // 33 ^ 11
79 0x855cb541, // 33 ^ 10
80 0x040a9121, // 33 ^ 9
81 0x747c7101, // 33 ^ 8
82 };
83 static uvec32 kHashMul2 = {
84 0xec41d4e1, // 33 ^ 7
85 0x4cfa3cc1, // 33 ^ 6
86 0x025528a1, // 33 ^ 5
87 0x00121881, // 33 ^ 4
88 };
89 static uvec32 kHashMul3 = {
90 0x00008c61, // 33 ^ 3
91 0x00000441, // 33 ^ 2
92 0x00000021, // 33 ^ 1
93 0x00000001, // 33 ^ 0
94 };
96 uint32 HashDjb2_SSE41(const uint8* src, int count, uint32 seed) {
97 uint32 hash;
98 asm volatile ( // NOLINT
99 "movd %2,%%xmm0 \n"
100 "pxor %%xmm7,%%xmm7 \n"
101 "movdqa %4,%%xmm6 \n"
102 LABELALIGN
103 "1: \n"
104 "movdqu " MEMACCESS(0) ",%%xmm1 \n"
105 "lea " MEMLEA(0x10, 0) ",%0 \n"
106 "pmulld %%xmm6,%%xmm0 \n"
107 "movdqa %5,%%xmm5 \n"
108 "movdqa %%xmm1,%%xmm2 \n"
109 "punpcklbw %%xmm7,%%xmm2 \n"
110 "movdqa %%xmm2,%%xmm3 \n"
111 "punpcklwd %%xmm7,%%xmm3 \n"
112 "pmulld %%xmm5,%%xmm3 \n"
113 "movdqa %6,%%xmm5 \n"
114 "movdqa %%xmm2,%%xmm4 \n"
115 "punpckhwd %%xmm7,%%xmm4 \n"
116 "pmulld %%xmm5,%%xmm4 \n"
117 "movdqa %7,%%xmm5 \n"
118 "punpckhbw %%xmm7,%%xmm1 \n"
119 "movdqa %%xmm1,%%xmm2 \n"
120 "punpcklwd %%xmm7,%%xmm2 \n"
121 "pmulld %%xmm5,%%xmm2 \n"
122 "movdqa %8,%%xmm5 \n"
123 "punpckhwd %%xmm7,%%xmm1 \n"
124 "pmulld %%xmm5,%%xmm1 \n"
125 "paddd %%xmm4,%%xmm3 \n"
126 "paddd %%xmm2,%%xmm1 \n"
127 "sub $0x10,%1 \n"
128 "paddd %%xmm3,%%xmm1 \n"
129 "pshufd $0xe,%%xmm1,%%xmm2 \n"
130 "paddd %%xmm2,%%xmm1 \n"
131 "pshufd $0x1,%%xmm1,%%xmm2 \n"
132 "paddd %%xmm2,%%xmm1 \n"
133 "paddd %%xmm1,%%xmm0 \n"
134 "jg 1b \n"
135 "movd %%xmm0,%3 \n"
136 : "+r"(src), // %0
137 "+r"(count), // %1
138 "+rm"(seed), // %2
139 "=g"(hash) // %3
140 : "m"(kHash16x33), // %4
141 "m"(kHashMul0), // %5
142 "m"(kHashMul1), // %6
143 "m"(kHashMul2), // %7
144 "m"(kHashMul3) // %8
145 : "memory", "cc"
146 #if defined(__SSE2__)
147 , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7"
148 #endif
149 ); // NOLINT
150 return hash;
151 }
152 #endif // defined(__x86_64__) || (defined(__i386__) && !defined(__pic__)))
154 #ifdef __cplusplus
155 } // extern "C"
156 } // namespace libyuv
157 #endif
