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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /gfx/ycbcr/yuv_convert_mmx.cpp | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | gfx/ycbcr/yuv_convert_mmx.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
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 <mmintrin.h> +#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<const __m64*>(y0_ptr); + const __m64* y1_ptr64 = reinterpret_cast<const __m64*>(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 |