Hangyu Kuang | f047e7c | 2016-07-06 14:21:45 -0700 | [diff] [blame^] | 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 | */ |
| 10 | |
| 11 | #include "libyuv/basic_types.h" |
| 12 | |
| 13 | #include "libyuv/compare_row.h" |
| 14 | #include "libyuv/row.h" |
| 15 | |
| 16 | #ifdef __cplusplus |
| 17 | namespace libyuv { |
| 18 | extern "C" { |
| 19 | #endif |
| 20 | |
| 21 | // This module is for GCC x86 and x64. |
| 22 | #if !defined(LIBYUV_DISABLE_X86) && \ |
| 23 | (defined(__x86_64__) || (defined(__i386__) && !defined(_MSC_VER))) |
| 24 | |
| 25 | uint32 SumSquareError_SSE2(const uint8* src_a, const uint8* src_b, int count) { |
| 26 | uint32 sse; |
| 27 | asm volatile ( |
| 28 | "pxor %%xmm0,%%xmm0 \n" |
| 29 | "pxor %%xmm5,%%xmm5 \n" |
| 30 | LABELALIGN |
| 31 | "1: \n" |
| 32 | "movdqu " MEMACCESS(0) ",%%xmm1 \n" |
| 33 | "lea " MEMLEA(0x10, 0) ",%0 \n" |
| 34 | "movdqu " MEMACCESS(1) ",%%xmm2 \n" |
| 35 | "lea " MEMLEA(0x10, 1) ",%1 \n" |
| 36 | "movdqa %%xmm1,%%xmm3 \n" |
| 37 | "psubusb %%xmm2,%%xmm1 \n" |
| 38 | "psubusb %%xmm3,%%xmm2 \n" |
| 39 | "por %%xmm2,%%xmm1 \n" |
| 40 | "movdqa %%xmm1,%%xmm2 \n" |
| 41 | "punpcklbw %%xmm5,%%xmm1 \n" |
| 42 | "punpckhbw %%xmm5,%%xmm2 \n" |
| 43 | "pmaddwd %%xmm1,%%xmm1 \n" |
| 44 | "pmaddwd %%xmm2,%%xmm2 \n" |
| 45 | "paddd %%xmm1,%%xmm0 \n" |
| 46 | "paddd %%xmm2,%%xmm0 \n" |
| 47 | "sub $0x10,%2 \n" |
| 48 | "jg 1b \n" |
| 49 | |
| 50 | "pshufd $0xee,%%xmm0,%%xmm1 \n" |
| 51 | "paddd %%xmm1,%%xmm0 \n" |
| 52 | "pshufd $0x1,%%xmm0,%%xmm1 \n" |
| 53 | "paddd %%xmm1,%%xmm0 \n" |
| 54 | "movd %%xmm0,%3 \n" |
| 55 | |
| 56 | : "+r"(src_a), // %0 |
| 57 | "+r"(src_b), // %1 |
| 58 | "+r"(count), // %2 |
| 59 | "=g"(sse) // %3 |
| 60 | :: "memory", "cc", "xmm0", "xmm1", "xmm2", "xmm3", "xmm5" |
| 61 | ); |
| 62 | return sse; |
| 63 | } |
| 64 | |
| 65 | static uvec32 kHash16x33 = { 0x92d9e201, 0, 0, 0 }; // 33 ^ 16 |
| 66 | static uvec32 kHashMul0 = { |
| 67 | 0x0c3525e1, // 33 ^ 15 |
| 68 | 0xa3476dc1, // 33 ^ 14 |
| 69 | 0x3b4039a1, // 33 ^ 13 |
| 70 | 0x4f5f0981, // 33 ^ 12 |
| 71 | }; |
| 72 | static uvec32 kHashMul1 = { |
| 73 | 0x30f35d61, // 33 ^ 11 |
| 74 | 0x855cb541, // 33 ^ 10 |
| 75 | 0x040a9121, // 33 ^ 9 |
| 76 | 0x747c7101, // 33 ^ 8 |
| 77 | }; |
| 78 | static uvec32 kHashMul2 = { |
| 79 | 0xec41d4e1, // 33 ^ 7 |
| 80 | 0x4cfa3cc1, // 33 ^ 6 |
| 81 | 0x025528a1, // 33 ^ 5 |
| 82 | 0x00121881, // 33 ^ 4 |
| 83 | }; |
| 84 | static uvec32 kHashMul3 = { |
| 85 | 0x00008c61, // 33 ^ 3 |
| 86 | 0x00000441, // 33 ^ 2 |
| 87 | 0x00000021, // 33 ^ 1 |
| 88 | 0x00000001, // 33 ^ 0 |
| 89 | }; |
| 90 | |
| 91 | uint32 HashDjb2_SSE41(const uint8* src, int count, uint32 seed) { |
| 92 | uint32 hash; |
| 93 | asm volatile ( |
| 94 | "movd %2,%%xmm0 \n" |
| 95 | "pxor %%xmm7,%%xmm7 \n" |
| 96 | "movdqa %4,%%xmm6 \n" |
| 97 | LABELALIGN |
| 98 | "1: \n" |
| 99 | "movdqu " MEMACCESS(0) ",%%xmm1 \n" |
| 100 | "lea " MEMLEA(0x10, 0) ",%0 \n" |
| 101 | "pmulld %%xmm6,%%xmm0 \n" |
| 102 | "movdqa %5,%%xmm5 \n" |
| 103 | "movdqa %%xmm1,%%xmm2 \n" |
| 104 | "punpcklbw %%xmm7,%%xmm2 \n" |
| 105 | "movdqa %%xmm2,%%xmm3 \n" |
| 106 | "punpcklwd %%xmm7,%%xmm3 \n" |
| 107 | "pmulld %%xmm5,%%xmm3 \n" |
| 108 | "movdqa %6,%%xmm5 \n" |
| 109 | "movdqa %%xmm2,%%xmm4 \n" |
| 110 | "punpckhwd %%xmm7,%%xmm4 \n" |
| 111 | "pmulld %%xmm5,%%xmm4 \n" |
| 112 | "movdqa %7,%%xmm5 \n" |
| 113 | "punpckhbw %%xmm7,%%xmm1 \n" |
| 114 | "movdqa %%xmm1,%%xmm2 \n" |
| 115 | "punpcklwd %%xmm7,%%xmm2 \n" |
| 116 | "pmulld %%xmm5,%%xmm2 \n" |
| 117 | "movdqa %8,%%xmm5 \n" |
| 118 | "punpckhwd %%xmm7,%%xmm1 \n" |
| 119 | "pmulld %%xmm5,%%xmm1 \n" |
| 120 | "paddd %%xmm4,%%xmm3 \n" |
| 121 | "paddd %%xmm2,%%xmm1 \n" |
| 122 | "paddd %%xmm3,%%xmm1 \n" |
| 123 | "pshufd $0xe,%%xmm1,%%xmm2 \n" |
| 124 | "paddd %%xmm2,%%xmm1 \n" |
| 125 | "pshufd $0x1,%%xmm1,%%xmm2 \n" |
| 126 | "paddd %%xmm2,%%xmm1 \n" |
| 127 | "paddd %%xmm1,%%xmm0 \n" |
| 128 | "sub $0x10,%1 \n" |
| 129 | "jg 1b \n" |
| 130 | "movd %%xmm0,%3 \n" |
| 131 | : "+r"(src), // %0 |
| 132 | "+r"(count), // %1 |
| 133 | "+rm"(seed), // %2 |
| 134 | "=g"(hash) // %3 |
| 135 | : "m"(kHash16x33), // %4 |
| 136 | "m"(kHashMul0), // %5 |
| 137 | "m"(kHashMul1), // %6 |
| 138 | "m"(kHashMul2), // %7 |
| 139 | "m"(kHashMul3) // %8 |
| 140 | : "memory", "cc" |
| 141 | , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7" |
| 142 | ); |
| 143 | return hash; |
| 144 | } |
| 145 | #endif // defined(__x86_64__) || (defined(__i386__) && !defined(__pic__))) |
| 146 | |
| 147 | #ifdef __cplusplus |
| 148 | } // extern "C" |
| 149 | } // namespace libyuv |
| 150 | #endif |
| 151 | |