/* * Copyright 2013 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 "./psnr.h" // NOLINT #ifdef _OPENMP #include <omp.h> #endif #ifdef _MSC_VER #include <intrin.h> // For __cpuid() #endif #ifdef __cplusplus extern "C" { #endif typedef unsigned int uint32; // NOLINT #ifdef _MSC_VER typedef unsigned __int64 uint64; #else // COMPILER_MSVC #if defined(__LP64__) && !defined(__OpenBSD__) && !defined(__APPLE__) typedef unsigned long uint64; // NOLINT #else // defined(__LP64__) && !defined(__OpenBSD__) && !defined(__APPLE__) typedef unsigned long long uint64; // NOLINT #endif // __LP64__ #endif // _MSC_VER // libyuv provides this function when linking library for jpeg support. #if !defined(HAVE_JPEG) #if !defined(LIBYUV_DISABLE_NEON) && defined(__ARM_NEON__) && \ !defined(__aarch64__) #define HAS_SUMSQUAREERROR_NEON static uint32 SumSquareError_NEON(const uint8* src_a, const uint8* src_b, int count) { volatile uint32 sse; asm volatile( "vmov.u8 q7, #0 \n" "vmov.u8 q9, #0 \n" "vmov.u8 q8, #0 \n" "vmov.u8 q10, #0 \n" "1: \n" "vld1.u8 {q0}, [%0]! \n" "vld1.u8 {q1}, [%1]! \n" "vsubl.u8 q2, d0, d2 \n" "vsubl.u8 q3, d1, d3 \n" "vmlal.s16 q7, d4, d4 \n" "vmlal.s16 q8, d6, d6 \n" "vmlal.s16 q8, d5, d5 \n" "vmlal.s16 q10, d7, d7 \n" "subs %2, %2, #16 \n" "bhi 1b \n" "vadd.u32 q7, q7, q8 \n" "vadd.u32 q9, q9, q10 \n" "vadd.u32 q10, q7, q9 \n" "vpaddl.u32 q1, q10 \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", "q7", "q8", "q9", "q10"); return sse; } #elif !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__) #define HAS_SUMSQUAREERROR_NEON static uint32 SumSquareError_NEON(const uint8* src_a, const uint8* src_b, int count) { volatile uint32 sse; asm volatile( "eor v16.16b, v16.16b, v16.16b \n" "eor v18.16b, v18.16b, v18.16b \n" "eor v17.16b, v17.16b, v17.16b \n" "eor v19.16b, v19.16b, v19.16b \n" "1: \n" "ld1 {v0.16b}, [%0], #16 \n" "ld1 {v1.16b}, [%1], #16 \n" "subs %w2, %w2, #16 \n" "usubl v2.8h, v0.8b, v1.8b \n" "usubl2 v3.8h, v0.16b, v1.16b \n" "smlal v16.4s, v2.4h, v2.4h \n" "smlal v17.4s, v3.4h, v3.4h \n" "smlal2 v18.4s, v2.8h, v2.8h \n" "smlal2 v19.4s, v3.8h, v3.8h \n" "b.gt 1b \n" "add v16.4s, v16.4s, v17.4s \n" "add v18.4s, v18.4s, v19.4s \n" "add v19.4s, v16.4s, v18.4s \n" "addv s0, v19.4s \n" "fmov %w3, s0 \n" : "+r"(src_a), "+r"(src_b), "+r"(count), "=r"(sse) : : "cc", "v0", "v1", "v2", "v3", "v16", "v17", "v18", "v19"); return sse; } #elif !defined(LIBYUV_DISABLE_X86) && defined(_M_IX86) && defined(_MSC_VER) #define HAS_SUMSQUAREERROR_SSE2 __declspec(naked) static uint32 SumSquareError_SSE2(const uint8* /*src_a*/, const uint8* /*src_b*/, int /*count*/) { __asm { mov eax, [esp + 4] // src_a mov edx, [esp + 8] // src_b mov ecx, [esp + 12] // count pxor xmm0, xmm0 pxor xmm5, xmm5 sub edx, eax wloop: movdqu xmm1, [eax] movdqu xmm2, [eax + edx] lea eax, [eax + 16] movdqu xmm3, xmm1 psubusb xmm1, xmm2 psubusb xmm2, xmm3 por xmm1, xmm2 movdqu xmm2, xmm1 punpcklbw xmm1, xmm5 punpckhbw xmm2, xmm5 pmaddwd xmm1, xmm1 pmaddwd xmm2, xmm2 paddd xmm0, xmm1 paddd xmm0, xmm2 sub ecx, 16 ja wloop pshufd xmm1, xmm0, 0EEh paddd xmm0, xmm1 pshufd xmm1, xmm0, 01h paddd xmm0, xmm1 movd eax, xmm0 ret } } #elif !defined(LIBYUV_DISABLE_X86) && (defined(__x86_64__) || defined(__i386__)) #define HAS_SUMSQUAREERROR_SSE2 static uint32 SumSquareError_SSE2(const uint8* src_a, const uint8* src_b, int count) { uint32 sse; asm volatile( // NOLINT "pxor %%xmm0,%%xmm0 \n" "pxor %%xmm5,%%xmm5 \n" "sub %0,%1 \n" "1: \n" "movdqu (%0),%%xmm1 \n" "movdqu (%0,%1,1),%%xmm2 \n" "lea 0x10(%0),%0 \n" "movdqu %%xmm1,%%xmm3 \n" "psubusb %%xmm2,%%xmm1 \n" "psubusb %%xmm3,%%xmm2 \n" "por %%xmm2,%%xmm1 \n" "movdqu %%xmm1,%%xmm2 \n" "punpcklbw %%xmm5,%%xmm1 \n" "punpckhbw %%xmm5,%%xmm2 \n" "pmaddwd %%xmm1,%%xmm1 \n" "pmaddwd %%xmm2,%%xmm2 \n" "paddd %%xmm1,%%xmm0 \n" "paddd %%xmm2,%%xmm0 \n" "sub $0x10,%2 \n" "ja 1b \n" "pshufd $0xee,%%xmm0,%%xmm1 \n" "paddd %%xmm1,%%xmm0 \n" "pshufd $0x1,%%xmm0,%%xmm1 \n" "paddd %%xmm1,%%xmm0 \n" "movd %%xmm0,%3 \n" : "+r"(src_a), // %0 "+r"(src_b), // %1 "+r"(count), // %2 "=g"(sse) // %3 : : "memory", "cc" #if defined(__SSE2__) , "xmm0", "xmm1", "xmm2", "xmm3", "xmm5" #endif ); // NOLINT return sse; } #endif // LIBYUV_DISABLE_X86 etc #if defined(HAS_SUMSQUAREERROR_SSE2) #if (defined(__pic__) || defined(__APPLE__)) && defined(__i386__) static __inline void __cpuid(int cpu_info[4], int info_type) { asm volatile( // NOLINT "mov %%ebx, %%edi \n" "cpuid \n" "xchg %%edi, %%ebx \n" : "=a"(cpu_info[0]), "=D"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3]) : "a"(info_type)); } // For gcc/clang but not clangcl. #elif !defined(_MSC_VER) && (defined(__i386__) || defined(__x86_64__)) static __inline void __cpuid(int cpu_info[4], int info_type) { asm volatile( // NOLINT "cpuid \n" : "=a"(cpu_info[0]), "=b"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3]) : "a"(info_type)); } #endif static int CpuHasSSE2() { #if defined(__i386__) || defined(__x86_64__) || defined(_M_IX86) int cpu_info[4]; __cpuid(cpu_info, 1); if (cpu_info[3] & 0x04000000) { return 1; } #endif return 0; } #endif // HAS_SUMSQUAREERROR_SSE2 static uint32 SumSquareError_C(const uint8* src_a, const uint8* src_b, int count) { uint32 sse = 0u; for (int x = 0; x < count; ++x) { int diff = src_a[x] - src_b[x]; sse += static_cast<uint32>(diff * diff); } return sse; } double ComputeSumSquareError(const uint8* src_a, const uint8* src_b, int count) { uint32 (*SumSquareError)(const uint8* src_a, const uint8* src_b, int count) = SumSquareError_C; #if defined(HAS_SUMSQUAREERROR_NEON) SumSquareError = SumSquareError_NEON; #endif #if defined(HAS_SUMSQUAREERROR_SSE2) if (CpuHasSSE2()) { SumSquareError = SumSquareError_SSE2; } #endif const int kBlockSize = 1 << 15; uint64 sse = 0; #ifdef _OPENMP #pragma omp parallel for reduction(+ : sse) #endif for (int i = 0; i < (count - (kBlockSize - 1)); i += kBlockSize) { sse += SumSquareError(src_a + i, src_b + i, kBlockSize); } src_a += count & ~(kBlockSize - 1); src_b += count & ~(kBlockSize - 1); int remainder = count & (kBlockSize - 1) & ~15; if (remainder) { sse += SumSquareError(src_a, src_b, remainder); src_a += remainder; src_b += remainder; } remainder = count & 15; if (remainder) { sse += SumSquareError_C(src_a, src_b, remainder); } return static_cast<double>(sse); } #endif // PSNR formula: psnr = 10 * log10 (Peak Signal^2 * size / sse) // Returns 128.0 (kMaxPSNR) if sse is 0 (perfect match). double ComputePSNR(double sse, double size) { const double kMINSSE = 255.0 * 255.0 * size / pow(10.0, kMaxPSNR / 10.0); if (sse <= kMINSSE) sse = kMINSSE; // Produces max PSNR of 128 return 10.0 * log10(255.0 * 255.0 * size / sse); } #ifdef __cplusplus } // extern "C" #endif