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290 lines
9.9 KiB
290 lines
9.9 KiB
/* |
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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; // NOLINT |
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#ifdef _MSC_VER |
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typedef unsigned __int64 uint64; |
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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; // NOLINT |
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#else // defined(__LP64__) && !defined(__OpenBSD__) && !defined(__APPLE__) |
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typedef unsigned long long uint64; // 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 SumSquareError_NEON(const uint8* src_a, |
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const uint8* src_b, |
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int count) { |
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volatile uint32 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 SumSquareError_NEON(const uint8* src_a, |
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const uint8* src_b, |
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int count) { |
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volatile uint32 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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#define HAS_SUMSQUAREERROR_SSE2 |
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__declspec(naked) static uint32 SumSquareError_SSE2(const uint8* /*src_a*/, |
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const uint8* /*src_b*/, |
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int /*count*/) { |
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__asm { |
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mov eax, [esp + 4] // src_a |
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mov edx, [esp + 8] // src_b |
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mov ecx, [esp + 12] // count |
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pxor xmm0, xmm0 |
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pxor xmm5, xmm5 |
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sub edx, eax |
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wloop: |
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movdqu xmm1, [eax] |
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movdqu xmm2, [eax + edx] |
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lea eax, [eax + 16] |
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movdqu xmm3, xmm1 |
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psubusb xmm1, xmm2 |
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psubusb xmm2, xmm3 |
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por xmm1, xmm2 |
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movdqu xmm2, xmm1 |
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punpcklbw xmm1, xmm5 |
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punpckhbw xmm2, xmm5 |
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pmaddwd xmm1, xmm1 |
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pmaddwd xmm2, xmm2 |
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paddd xmm0, xmm1 |
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paddd xmm0, xmm2 |
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sub ecx, 16 |
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ja wloop |
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pshufd xmm1, xmm0, 0EEh |
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paddd xmm0, xmm1 |
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pshufd xmm1, xmm0, 01h |
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paddd xmm0, xmm1 |
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movd eax, xmm0 |
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ret |
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} |
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} |
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#elif !defined(LIBYUV_DISABLE_X86) && (defined(__x86_64__) || defined(__i386__)) |
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#define HAS_SUMSQUAREERROR_SSE2 |
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static uint32 SumSquareError_SSE2(const uint8* src_a, |
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const uint8* src_b, |
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int count) { |
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uint32 sse; |
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asm volatile( // NOLINT |
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"pxor %%xmm0,%%xmm0 \n" |
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"pxor %%xmm5,%%xmm5 \n" |
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"sub %0,%1 \n" |
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"1: \n" |
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"movdqu (%0),%%xmm1 \n" |
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"movdqu (%0,%1,1),%%xmm2 \n" |
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"lea 0x10(%0),%0 \n" |
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"movdqu %%xmm1,%%xmm3 \n" |
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"psubusb %%xmm2,%%xmm1 \n" |
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"psubusb %%xmm3,%%xmm2 \n" |
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"por %%xmm2,%%xmm1 \n" |
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"movdqu %%xmm1,%%xmm2 \n" |
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"punpcklbw %%xmm5,%%xmm1 \n" |
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"punpckhbw %%xmm5,%%xmm2 \n" |
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"pmaddwd %%xmm1,%%xmm1 \n" |
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"pmaddwd %%xmm2,%%xmm2 \n" |
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"paddd %%xmm1,%%xmm0 \n" |
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"paddd %%xmm2,%%xmm0 \n" |
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"sub $0x10,%2 \n" |
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"ja 1b \n" |
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"pshufd $0xee,%%xmm0,%%xmm1 \n" |
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"paddd %%xmm1,%%xmm0 \n" |
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"pshufd $0x1,%%xmm0,%%xmm1 \n" |
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"paddd %%xmm1,%%xmm0 \n" |
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"movd %%xmm0,%3 \n" |
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: "+r"(src_a), // %0 |
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"+r"(src_b), // %1 |
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"+r"(count), // %2 |
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"=g"(sse) // %3 |
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: |
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: "memory", "cc" |
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#if defined(__SSE2__) |
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, |
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"xmm0", "xmm1", "xmm2", "xmm3", "xmm5" |
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#endif |
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); // NOLINT |
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return sse; |
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} |
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#endif // LIBYUV_DISABLE_X86 etc |
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#if defined(HAS_SUMSQUAREERROR_SSE2) |
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#if (defined(__pic__) || defined(__APPLE__)) && defined(__i386__) |
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static __inline void __cpuid(int cpu_info[4], int info_type) { |
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asm volatile( // NOLINT |
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"mov %%ebx, %%edi \n" |
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"cpuid \n" |
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"xchg %%edi, %%ebx \n" |
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: "=a"(cpu_info[0]), "=D"(cpu_info[1]), "=c"(cpu_info[2]), |
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"=d"(cpu_info[3]) |
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: "a"(info_type)); |
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} |
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// For gcc/clang but not clangcl. |
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#elif !defined(_MSC_VER) && (defined(__i386__) || defined(__x86_64__)) |
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static __inline void __cpuid(int cpu_info[4], int info_type) { |
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asm volatile( // NOLINT |
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"cpuid \n" |
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: "=a"(cpu_info[0]), "=b"(cpu_info[1]), "=c"(cpu_info[2]), |
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"=d"(cpu_info[3]) |
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: "a"(info_type)); |
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} |
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#endif |
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static int CpuHasSSE2() { |
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#if defined(__i386__) || defined(__x86_64__) || defined(_M_IX86) |
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int cpu_info[4]; |
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__cpuid(cpu_info, 1); |
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if (cpu_info[3] & 0x04000000) { |
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return 1; |
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} |
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#endif |
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return 0; |
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} |
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#endif // HAS_SUMSQUAREERROR_SSE2 |
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static uint32 SumSquareError_C(const uint8* src_a, |
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const uint8* src_b, |
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int count) { |
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uint32 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>(diff * diff); |
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} |
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return sse; |
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} |
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double ComputeSumSquareError(const uint8* src_a, |
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const uint8* src_b, |
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int count) { |
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uint32 (*SumSquareError)(const uint8* src_a, const uint8* src_b, int count) = |
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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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#if defined(HAS_SUMSQUAREERROR_SSE2) |
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if (CpuHasSSE2()) { |
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SumSquareError = SumSquareError_SSE2; |
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} |
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#endif |
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const int kBlockSize = 1 << 15; |
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uint64 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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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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