From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- gfx/ycbcr/yuv_convert_sse2.cpp | 47 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 gfx/ycbcr/yuv_convert_sse2.cpp (limited to 'gfx/ycbcr/yuv_convert_sse2.cpp') diff --git a/gfx/ycbcr/yuv_convert_sse2.cpp b/gfx/ycbcr/yuv_convert_sse2.cpp new file mode 100644 index 000000000..25fe20639 --- /dev/null +++ b/gfx/ycbcr/yuv_convert_sse2.cpp @@ -0,0 +1,47 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include +#include "yuv_row.h" + +namespace mozilla { +namespace gfx { + +// FilterRows combines two rows of the image using linear interpolation. +// SSE2 version does 16 pixels at a time. +void FilterRows_SSE2(uint8* ybuf, const uint8* y0_ptr, const uint8* y1_ptr, + int source_width, int source_y_fraction) { + __m128i zero = _mm_setzero_si128(); + __m128i y1_fraction = _mm_set1_epi16(source_y_fraction); + __m128i y0_fraction = _mm_set1_epi16(256 - source_y_fraction); + + const __m128i* y0_ptr128 = reinterpret_cast(y0_ptr); + const __m128i* y1_ptr128 = reinterpret_cast(y1_ptr); + __m128i* dest128 = reinterpret_cast<__m128i*>(ybuf); + __m128i* end128 = reinterpret_cast<__m128i*>(ybuf + source_width); + + do { + __m128i y0 = _mm_loadu_si128(y0_ptr128); + __m128i y1 = _mm_loadu_si128(y1_ptr128); + __m128i y2 = _mm_unpackhi_epi8(y0, zero); + __m128i y3 = _mm_unpackhi_epi8(y1, zero); + y0 = _mm_unpacklo_epi8(y0, zero); + y1 = _mm_unpacklo_epi8(y1, zero); + y0 = _mm_mullo_epi16(y0, y0_fraction); + y1 = _mm_mullo_epi16(y1, y1_fraction); + y2 = _mm_mullo_epi16(y2, y0_fraction); + y3 = _mm_mullo_epi16(y3, y1_fraction); + y0 = _mm_add_epi16(y0, y1); + y2 = _mm_add_epi16(y2, y3); + y0 = _mm_srli_epi16(y0, 8); + y2 = _mm_srli_epi16(y2, 8); + y0 = _mm_packus_epi16(y0, y2); + *dest128++ = y0; + ++y0_ptr128; + ++y1_ptr128; + } while (dest128 < end128); +} + +} // namespace gfx +} // namespace mozilla -- cgit v1.2.3