From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- gfx/ycbcr/yuv_convert_mmx.cpp | 45 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 gfx/ycbcr/yuv_convert_mmx.cpp (limited to 'gfx/ycbcr/yuv_convert_mmx.cpp') diff --git a/gfx/ycbcr/yuv_convert_mmx.cpp b/gfx/ycbcr/yuv_convert_mmx.cpp new file mode 100644 index 0000000000..797b032f79 --- /dev/null +++ b/gfx/ycbcr/yuv_convert_mmx.cpp @@ -0,0 +1,45 @@ +// 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. +// MMX version does 8 pixels at a time. +void FilterRows_MMX(uint8_t* ybuf, const uint8_t* y0_ptr, const uint8_t* y1_ptr, + int source_width, int source_y_fraction) { + __m64 zero = _mm_setzero_si64(); + __m64 y1_fraction = _mm_set1_pi16(source_y_fraction); + __m64 y0_fraction = _mm_set1_pi16(256 - source_y_fraction); + + const __m64* y0_ptr64 = reinterpret_cast(y0_ptr); + const __m64* y1_ptr64 = reinterpret_cast(y1_ptr); + __m64* dest64 = reinterpret_cast<__m64*>(ybuf); + __m64* end64 = reinterpret_cast<__m64*>(ybuf + source_width); + + do { + __m64 y0 = *y0_ptr64++; + __m64 y1 = *y1_ptr64++; + __m64 y2 = _mm_unpackhi_pi8(y0, zero); + __m64 y3 = _mm_unpackhi_pi8(y1, zero); + y0 = _mm_unpacklo_pi8(y0, zero); + y1 = _mm_unpacklo_pi8(y1, zero); + y0 = _mm_mullo_pi16(y0, y0_fraction); + y1 = _mm_mullo_pi16(y1, y1_fraction); + y2 = _mm_mullo_pi16(y2, y0_fraction); + y3 = _mm_mullo_pi16(y3, y1_fraction); + y0 = _mm_add_pi16(y0, y1); + y2 = _mm_add_pi16(y2, y3); + y0 = _mm_srli_pi16(y0, 8); + y2 = _mm_srli_pi16(y2, 8); + y0 = _mm_packs_pu16(y0, y2); + *dest64++ = y0; + } while (dest64 < end64); +} + +} // namespace gfx +} // namespace mozilla -- cgit v1.2.3