mirror of
https://chromium.googlesource.com/libyuv/libyuv
synced 2026-05-01 03:19:18 +08:00
62c19d062d
Removed all SSE functions, macros, dispatching logic, and related unit tests across the repository to reduce code size and complexity. Left cpuid detection intact. Supported architectures like AVX2, NEON, SVE, etc. are unaffected. R=rrwinterton@gmail.com Bug: None Test: Build and run libyuv_unittest Change-Id: Id19608dba35b79c4c8fc31f920a6a968883d300f
170 lines
6.0 KiB
C++
170 lines
6.0 KiB
C++
/*
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* Copyright 2013 The LibYuv Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "./psnr.h" // NOLINT
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#ifdef _OPENMP
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#include <omp.h>
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#endif
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#ifdef _MSC_VER
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#include <intrin.h> // For __cpuid()
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef unsigned int uint32_t; // NOLINT
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#ifdef _MSC_VER
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typedef unsigned __int64 uint64_t;
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#else // COMPILER_MSVC
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#if defined(__LP64__) && !defined(__OpenBSD__) && !defined(__APPLE__)
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typedef unsigned long uint64_t; // NOLINT
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#else // defined(__LP64__) && !defined(__OpenBSD__) && !defined(__APPLE__)
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typedef unsigned long long uint64_t; // NOLINT
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#endif // __LP64__
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#endif // _MSC_VER
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// libyuv provides this function when linking library for jpeg support.
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#if !defined(HAVE_JPEG)
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#if !defined(LIBYUV_DISABLE_NEON) && defined(__ARM_NEON__) && \
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!defined(__aarch64__)
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#define HAS_SUMSQUAREERROR_NEON
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static uint32_t SumSquareError_NEON(const uint8_t* src_a,
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const uint8_t* src_b,
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int count) {
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volatile uint32_t sse;
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asm volatile(
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"vmov.u8 q7, #0 \n"
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"vmov.u8 q9, #0 \n"
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"vmov.u8 q8, #0 \n"
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"vmov.u8 q10, #0 \n"
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"1: \n"
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"vld1.u8 {q0}, [%0]! \n"
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"vld1.u8 {q1}, [%1]! \n"
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"vsubl.u8 q2, d0, d2 \n"
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"vsubl.u8 q3, d1, d3 \n"
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"vmlal.s16 q7, d4, d4 \n"
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"vmlal.s16 q8, d6, d6 \n"
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"vmlal.s16 q8, d5, d5 \n"
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"vmlal.s16 q10, d7, d7 \n"
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"subs %2, %2, #16 \n"
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"bhi 1b \n"
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"vadd.u32 q7, q7, q8 \n"
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"vadd.u32 q9, q9, q10 \n"
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"vadd.u32 q10, q7, q9 \n"
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"vpaddl.u32 q1, q10 \n"
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"vadd.u64 d0, d2, d3 \n"
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"vmov.32 %3, d0[0] \n"
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: "+r"(src_a), "+r"(src_b), "+r"(count), "=r"(sse)
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:
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: "memory", "cc", "q0", "q1", "q2", "q3", "q7", "q8", "q9", "q10");
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return sse;
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}
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#elif !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__)
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#define HAS_SUMSQUAREERROR_NEON
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static uint32_t SumSquareError_NEON(const uint8_t* src_a,
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const uint8_t* src_b,
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int count) {
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volatile uint32_t sse;
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asm volatile(
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"eor v16.16b, v16.16b, v16.16b \n"
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"eor v18.16b, v18.16b, v18.16b \n"
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"eor v17.16b, v17.16b, v17.16b \n"
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"eor v19.16b, v19.16b, v19.16b \n"
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"1: \n"
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"ld1 {v0.16b}, [%0], #16 \n"
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"ld1 {v1.16b}, [%1], #16 \n"
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"subs %w2, %w2, #16 \n"
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"usubl v2.8h, v0.8b, v1.8b \n"
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"usubl2 v3.8h, v0.16b, v1.16b \n"
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"smlal v16.4s, v2.4h, v2.4h \n"
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"smlal v17.4s, v3.4h, v3.4h \n"
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"smlal2 v18.4s, v2.8h, v2.8h \n"
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"smlal2 v19.4s, v3.8h, v3.8h \n"
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"b.gt 1b \n"
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"add v16.4s, v16.4s, v17.4s \n"
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"add v18.4s, v18.4s, v19.4s \n"
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"add v19.4s, v16.4s, v18.4s \n"
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"addv s0, v19.4s \n"
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"fmov %w3, s0 \n"
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: "+r"(src_a), "+r"(src_b), "+r"(count), "=r"(sse)
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:
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: "cc", "v0", "v1", "v2", "v3", "v16", "v17", "v18", "v19");
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return sse;
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}
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#elif !defined(LIBYUV_DISABLE_X86) && defined(_M_IX86) && defined(_MSC_VER)
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#elif !defined(LIBYUV_DISABLE_X86) && (defined(__x86_64__) || defined(__i386__))
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#endif // LIBYUV_DISABLE_X86 etc
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static uint32_t SumSquareError_C(const uint8_t* src_a,
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const uint8_t* src_b,
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int count) {
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uint32_t sse = 0u;
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for (int x = 0; x < count; ++x) {
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int diff = src_a[x] - src_b[x];
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sse += static_cast<uint32_t>(diff * diff);
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}
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return sse;
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}
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double ComputeSumSquareError(const uint8_t* src_a,
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const uint8_t* src_b,
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int count) {
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uint32_t (*SumSquareError)(const uint8_t* src_a, const uint8_t* src_b,
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int count) = SumSquareError_C;
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#if defined(HAS_SUMSQUAREERROR_NEON)
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SumSquareError = SumSquareError_NEON;
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#endif
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const int kBlockSize = 1 << 15;
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uint64_t sse = 0;
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#ifdef _OPENMP
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#pragma omp parallel for reduction(+ : sse)
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#endif
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for (int i = 0; i < (count - (kBlockSize - 1)); i += kBlockSize) {
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sse += SumSquareError(src_a + i, src_b + i, kBlockSize);
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}
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src_a += count & ~(kBlockSize - 1);
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src_b += count & ~(kBlockSize - 1);
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int remainder = count & (kBlockSize - 1) & ~15;
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if (remainder) {
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sse += SumSquareError(src_a, src_b, remainder);
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src_a += remainder;
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src_b += remainder;
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}
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remainder = count & 15;
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if (remainder) {
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sse += SumSquareError_C(src_a, src_b, remainder);
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}
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return static_cast<double>(sse);
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}
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#endif
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// PSNR formula: psnr = 10 * log10 (Peak Signal^2 * size / sse)
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// Returns 128.0 (kMaxPSNR) if sse is 0 (perfect match).
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double ComputePSNR(double sse, double size) {
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const double kMINSSE = 255.0 * 255.0 * size / pow(10.0, kMaxPSNR / 10.0);
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if (sse <= kMINSSE) {
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sse = kMINSSE; // Produces max PSNR of 128
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}
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return 10.0 * log10(255.0 * 255.0 * size / sse);
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}
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#ifdef __cplusplus
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} // extern "C"
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#endif
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