ref: 1f19ebbab612c2a382b98787a85f2825279ef42a
parent: 89963bf586d818be20be21b27772af0768e15121
author: Dmitry Kovalev <dkovalev@google.com>
date: Fri Sep 5 20:10:25 EDT 2014
Replacing vp9_get_mb_ss_sse2 asm implementation with intrinsics. Change-Id: Ib4f5dd733eb2939b108070a01e83da5d9990bac0
--- a/test/variance_test.cc
+++ b/test/variance_test.cc
@@ -35,6 +35,14 @@
using ::std::tr1::tuple;
using libvpx_test::ACMRandom;
+static unsigned int mb_ss_ref(const int16_t *src) {+ unsigned int res = 0;
+ for (int i = 0; i < 256; ++i) {+ res += src[i] * src[i];
+ }
+ return res;
+}
+
static unsigned int variance_ref(const uint8_t *ref, const uint8_t *src,
int l2w, int l2h, unsigned int *sse_ptr) {int se = 0;
@@ -76,6 +84,50 @@
return sse - (((int64_t) se * se) >> (l2w + l2h));
}
+typedef unsigned int (*SumOfSquaresFunction)(const int16_t *src);
+
+class SumOfSquaresTest : public ::testing::TestWithParam<SumOfSquaresFunction> {+ public:
+ SumOfSquaresTest() : func_(GetParam()) {}+
+ virtual ~SumOfSquaresTest() {+ libvpx_test::ClearSystemState();
+ }
+
+ protected:
+ void ConstTest();
+ void RefTest();
+
+ SumOfSquaresFunction func_;
+ ACMRandom rnd_;
+};
+
+void SumOfSquaresTest::ConstTest() {+ int16_t mem[256];
+ unsigned int res;
+ for (int v = 0; v < 256; ++v) {+ for (int i = 0; i < 256; ++i) {+ mem[i] = v;
+ }
+ ASM_REGISTER_STATE_CHECK(res = func_(mem));
+ EXPECT_EQ(256u * (v * v), res);
+ }
+}
+
+void SumOfSquaresTest::RefTest() {+ int16_t mem[256];
+ for (int i = 0; i < 100; ++i) {+ for (int j = 0; j < 256; ++j) {+ mem[j] = rnd_.Rand8() - rnd_.Rand8();
+ }
+
+ const unsigned int expected = mb_ss_ref(mem);
+ unsigned int res;
+ ASM_REGISTER_STATE_CHECK(res = func_(mem));
+ EXPECT_EQ(expected, res);
+ }
+}
+
template<typename VarianceFunctionType>
class VarianceTest
: public ::testing::TestWithParam<tuple<int, int, VarianceFunctionType> > {@@ -362,6 +414,13 @@
namespace vp9 {#if CONFIG_VP9_ENCODER
+
+TEST_P(SumOfSquaresTest, Const) { ConstTest(); }+TEST_P(SumOfSquaresTest, Ref) { RefTest(); }+
+INSTANTIATE_TEST_CASE_P(C, SumOfSquaresTest,
+ ::testing::Values(vp9_get_mb_ss_c));
+
typedef VarianceTest<vp9_variance_fn_t> VP9VarianceTest;
typedef SubpelVarianceTest<vp9_subpixvariance_fn_t> VP9SubpelVarianceTest;
typedef SubpelVarianceTest<vp9_subp_avg_variance_fn_t> VP9SubpelAvgVarianceTest;
@@ -487,6 +546,10 @@
#if HAVE_SSE2
#if CONFIG_USE_X86INC
+
+INSTANTIATE_TEST_CASE_P(SSE2, SumOfSquaresTest,
+ ::testing::Values(vp9_get_mb_ss_sse2));
+
const vp9_variance_fn_t variance4x4_sse2 = vp9_variance4x4_sse2;
const vp9_variance_fn_t variance4x8_sse2 = vp9_variance4x8_sse2;
const vp9_variance_fn_t variance8x4_sse2 = vp9_variance8x4_sse2;
--- a/vp9/encoder/vp9_variance.c
+++ b/vp9/encoder/vp9_variance.c
@@ -103,8 +103,9 @@
unsigned int vp9_get_mb_ss_c(const int16_t *src_ptr) {unsigned int i, sum = 0;
- for (i = 0; i < 256; i++)
+ for (i = 0; i < 256; ++i) {sum += src_ptr[i] * src_ptr[i];
+ }
return sum;
}
--- a/vp9/encoder/x86/vp9_variance_impl_sse2.asm
+++ /dev/null
@@ -1,69 +1,0 @@
-;
-; Copyright (c) 2010 The WebM 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 "vpx_ports/x86_abi_support.asm"
-
-;unsigned int vp9_get_mb_ss_sse2
-;(
-; short *src_ptr
-;)
-global sym(vp9_get_mb_ss_sse2) PRIVATE
-sym(vp9_get_mb_ss_sse2):
- push rbp
- mov rbp, rsp
- SHADOW_ARGS_TO_STACK 1
- GET_GOT rbx
- push rsi
- push rdi
- sub rsp, 16
- ; end prolog
-
-
- mov rax, arg(0) ;[src_ptr]
- mov rcx, 8
- pxor xmm4, xmm4
-
-.NEXTROW:
- movdqa xmm0, [rax]
- movdqa xmm1, [rax+16]
- movdqa xmm2, [rax+32]
- movdqa xmm3, [rax+48]
- pmaddwd xmm0, xmm0
- pmaddwd xmm1, xmm1
- pmaddwd xmm2, xmm2
- pmaddwd xmm3, xmm3
-
- paddd xmm0, xmm1
- paddd xmm2, xmm3
- paddd xmm4, xmm0
- paddd xmm4, xmm2
-
- add rax, 0x40
- dec rcx
- ja .NEXTROW
-
- movdqa xmm3,xmm4
- psrldq xmm4,8
- paddd xmm4,xmm3
- movdqa xmm3,xmm4
- psrldq xmm4,4
- paddd xmm4,xmm3
- movq rax,xmm4
-
-
- ; begin epilog
- add rsp, 16
- pop rdi
- pop rsi
- RESTORE_GOT
- UNSHADOW_ARGS
- pop rbp
- ret
--- a/vp9/encoder/x86/vp9_variance_sse2.c
+++ b/vp9/encoder/x86/vp9_variance_sse2.c
@@ -19,6 +19,21 @@
const unsigned char *ref, int ref_stride,
unsigned int *sse, int *sum);
+unsigned int vp9_get_mb_ss_sse2(const int16_t *src) {+ __m128i vsum = _mm_setzero_si128();
+ int i;
+
+ for (i = 0; i < 32; ++i) {+ const __m128i v = _mm_loadu_si128((const __m128i *)src);
+ vsum = _mm_add_epi32(vsum, _mm_madd_epi16(v, v));
+ src += 8;
+ }
+
+ vsum = _mm_add_epi32(vsum, _mm_srli_si128(vsum, 8));
+ vsum = _mm_add_epi32(vsum, _mm_srli_si128(vsum, 4));
+ return _mm_cvtsi128_si32(vsum);
+}
+
#define READ64(p, stride, i) \
_mm_unpacklo_epi8(_mm_cvtsi32_si128(*(const uint32_t *)(p + i * stride)), \
_mm_cvtsi32_si128(*(const uint32_t *)(p + (i + 1) * stride)))
--- a/vp9/vp9cx.mk
+++ b/vp9/vp9cx.mk
@@ -93,7 +93,6 @@
VP9_CX_SRCS-yes += encoder/vp9_mbgraph.c
VP9_CX_SRCS-yes += encoder/vp9_mbgraph.h
-VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_variance_impl_sse2.asm
VP9_CX_SRCS-$(HAVE_AVX2) += encoder/x86/vp9_variance_impl_intrin_avx2.c
VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_sad4d_sse2.asm
VP9_CX_SRCS-$(HAVE_AVX2) += encoder/x86/vp9_sad4d_intrin_avx2.c
--
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