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Diffstat (limited to 'source/compare_neon.cc')
| -rw-r--r-- | source/compare_neon.cc | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/source/compare_neon.cc b/source/compare_neon.cc deleted file mode 100644 index afdd6012..00000000 --- a/source/compare_neon.cc +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Copyright 2012 The LibYuv Project Authors. All rights reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. An additional intellectual property rights grant can be found - * in the file PATENTS. All contributing project authors may - * be found in the AUTHORS file in the root of the source tree. - */ - -#include "libyuv/basic_types.h" - -#include "libyuv/compare_row.h" -#include "libyuv/row.h" - -#ifdef __cplusplus -namespace libyuv { -extern "C" { -#endif - -#if !defined(LIBYUV_DISABLE_NEON) && defined(__ARM_NEON__) && \ - !defined(__aarch64__) - -// 256 bits at a time -// uses short accumulator which restricts count to 131 KB -uint32_t HammingDistance_NEON(const uint8_t* src_a, - const uint8_t* src_b, - int count) { - uint32_t diff; - - asm volatile( - "vmov.u16 q4, #0 \n" // accumulator - - "1: \n" - "vld1.8 {q0, q1}, [%0]! \n" - "vld1.8 {q2, q3}, [%1]! \n" - "veor.32 q0, q0, q2 \n" - "veor.32 q1, q1, q3 \n" - "vcnt.i8 q0, q0 \n" - "vcnt.i8 q1, q1 \n" - "subs %2, %2, #32 \n" - "vadd.u8 q0, q0, q1 \n" // 16 byte counts - "vpadal.u8 q4, q0 \n" // 8 shorts - "bgt 1b \n" - - "vpaddl.u16 q0, q4 \n" // 4 ints - "vpadd.u32 d0, d0, d1 \n" - "vpadd.u32 d0, d0, d0 \n" - "vmov.32 %3, d0[0] \n" - - : "+r"(src_a), "+r"(src_b), "+r"(count), "=r"(diff) - : - : "cc", "q0", "q1", "q2", "q3", "q4"); - return diff; -} - -uint32_t SumSquareError_NEON(const uint8_t* src_a, - const uint8_t* src_b, - int count) { - uint32_t sse; - asm volatile( - "vmov.u8 q8, #0 \n" - "vmov.u8 q10, #0 \n" - "vmov.u8 q9, #0 \n" - "vmov.u8 q11, #0 \n" - - "1: \n" - "vld1.8 {q0}, [%0]! \n" - "vld1.8 {q1}, [%1]! \n" - "subs %2, %2, #16 \n" - "vsubl.u8 q2, d0, d2 \n" - "vsubl.u8 q3, d1, d3 \n" - "vmlal.s16 q8, d4, d4 \n" - "vmlal.s16 q9, d6, d6 \n" - "vmlal.s16 q10, d5, d5 \n" - "vmlal.s16 q11, d7, d7 \n" - "bgt 1b \n" - - "vadd.u32 q8, q8, q9 \n" - "vadd.u32 q10, q10, q11 \n" - "vadd.u32 q11, q8, q10 \n" - "vpaddl.u32 q1, q11 \n" - "vadd.u64 d0, d2, d3 \n" - "vmov.32 %3, d0[0] \n" - : "+r"(src_a), "+r"(src_b), "+r"(count), "=r"(sse) - : - : "memory", "cc", "q0", "q1", "q2", "q3", "q8", "q9", "q10", "q11"); - return sse; -} - -#endif // defined(__ARM_NEON__) && !defined(__aarch64__) - -#ifdef __cplusplus -} // extern "C" -} // namespace libyuv -#endif |