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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/libvpx/libvpx/vpx_dsp/x86/post_proc_sse2.c | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/x86/post_proc_sse2.c')
-rw-r--r-- | media/libvpx/libvpx/vpx_dsp/x86/post_proc_sse2.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/x86/post_proc_sse2.c b/media/libvpx/libvpx/vpx_dsp/x86/post_proc_sse2.c new file mode 100644 index 0000000000..119fa7cd1a --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/x86/post_proc_sse2.c @@ -0,0 +1,141 @@ +/* + * Copyright (c) 2018 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 <assert.h> +#include <emmintrin.h> + +#include <stdio.h> + +#include "./vpx_dsp_rtcd.h" +#include "vpx/vpx_integer.h" +#include "vpx_dsp/x86/mem_sse2.h" + +extern const int16_t vpx_rv[]; + +void vpx_mbpost_proc_down_sse2(unsigned char *dst, int pitch, int rows, + int cols, int flimit) { + int col; + const __m128i zero = _mm_setzero_si128(); + const __m128i f = _mm_set1_epi32(flimit); + DECLARE_ALIGNED(16, int16_t, above_context[8 * 8]); + + // 8 columns are processed at a time. + // If rows is less than 8 the bottom border extension fails. + assert(cols % 8 == 0); + assert(rows >= 8); + + for (col = 0; col < cols; col += 8) { + int row, i; + __m128i s = _mm_loadl_epi64((__m128i *)dst); + __m128i sum, sumsq_0, sumsq_1; + __m128i tmp_0, tmp_1; + __m128i below_context = _mm_setzero_si128(); + + s = _mm_unpacklo_epi8(s, zero); + + for (i = 0; i < 8; ++i) { + _mm_store_si128((__m128i *)above_context + i, s); + } + + // sum *= 9 + sum = _mm_slli_epi16(s, 3); + sum = _mm_add_epi16(s, sum); + + // sum^2 * 9 == (sum * 9) * sum + tmp_0 = _mm_mullo_epi16(sum, s); + tmp_1 = _mm_mulhi_epi16(sum, s); + + sumsq_0 = _mm_unpacklo_epi16(tmp_0, tmp_1); + sumsq_1 = _mm_unpackhi_epi16(tmp_0, tmp_1); + + // Prime sum/sumsq + for (i = 1; i <= 6; ++i) { + __m128i a = _mm_loadl_epi64((__m128i *)(dst + i * pitch)); + a = _mm_unpacklo_epi8(a, zero); + sum = _mm_add_epi16(sum, a); + a = _mm_mullo_epi16(a, a); + sumsq_0 = _mm_add_epi32(sumsq_0, _mm_unpacklo_epi16(a, zero)); + sumsq_1 = _mm_add_epi32(sumsq_1, _mm_unpackhi_epi16(a, zero)); + } + + for (row = 0; row < rows + 8; row++) { + const __m128i above = + _mm_load_si128((__m128i *)above_context + (row & 7)); + __m128i this_row = _mm_loadl_epi64((__m128i *)(dst + row * pitch)); + __m128i above_sq, below_sq; + __m128i mask_0, mask_1; + __m128i multmp_0, multmp_1; + __m128i rv; + __m128i out; + + this_row = _mm_unpacklo_epi8(this_row, zero); + + if (row + 7 < rows) { + // Instead of copying the end context we just stop loading when we get + // to the last one. + below_context = _mm_loadl_epi64((__m128i *)(dst + (row + 7) * pitch)); + below_context = _mm_unpacklo_epi8(below_context, zero); + } + + sum = _mm_sub_epi16(sum, above); + sum = _mm_add_epi16(sum, below_context); + + // context^2 fits in 16 bits. Don't need to mulhi and combine. Just zero + // extend. Unfortunately we can't do below_sq - above_sq in 16 bits + // because x86 does not have unpack with sign extension. + above_sq = _mm_mullo_epi16(above, above); + sumsq_0 = _mm_sub_epi32(sumsq_0, _mm_unpacklo_epi16(above_sq, zero)); + sumsq_1 = _mm_sub_epi32(sumsq_1, _mm_unpackhi_epi16(above_sq, zero)); + + below_sq = _mm_mullo_epi16(below_context, below_context); + sumsq_0 = _mm_add_epi32(sumsq_0, _mm_unpacklo_epi16(below_sq, zero)); + sumsq_1 = _mm_add_epi32(sumsq_1, _mm_unpackhi_epi16(below_sq, zero)); + + // sumsq * 16 - sumsq == sumsq * 15 + mask_0 = _mm_slli_epi32(sumsq_0, 4); + mask_0 = _mm_sub_epi32(mask_0, sumsq_0); + mask_1 = _mm_slli_epi32(sumsq_1, 4); + mask_1 = _mm_sub_epi32(mask_1, sumsq_1); + + multmp_0 = _mm_mullo_epi16(sum, sum); + multmp_1 = _mm_mulhi_epi16(sum, sum); + + mask_0 = _mm_sub_epi32(mask_0, _mm_unpacklo_epi16(multmp_0, multmp_1)); + mask_1 = _mm_sub_epi32(mask_1, _mm_unpackhi_epi16(multmp_0, multmp_1)); + + // mask - f gives a negative value when mask < f + mask_0 = _mm_sub_epi32(mask_0, f); + mask_1 = _mm_sub_epi32(mask_1, f); + + // Shift the sign bit down to create a mask + mask_0 = _mm_srai_epi32(mask_0, 31); + mask_1 = _mm_srai_epi32(mask_1, 31); + + mask_0 = _mm_packs_epi32(mask_0, mask_1); + + rv = _mm_loadu_si128((__m128i const *)(vpx_rv + (row & 127))); + + mask_1 = _mm_add_epi16(rv, sum); + mask_1 = _mm_add_epi16(mask_1, this_row); + mask_1 = _mm_srai_epi16(mask_1, 4); + + mask_1 = _mm_and_si128(mask_0, mask_1); + mask_0 = _mm_andnot_si128(mask_0, this_row); + out = _mm_or_si128(mask_1, mask_0); + + _mm_storel_epi64((__m128i *)(dst + row * pitch), + _mm_packus_epi16(out, zero)); + + _mm_store_si128((__m128i *)above_context + ((row + 8) & 7), this_row); + } + + dst += 8; + } +} |