OpenJPH
Open-source implementation of JPEG2000 Part-15
ojph_colour_avx2.cpp
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1//***************************************************************************/
2// This software is released under the 2-Clause BSD license, included
3// below.
4//
5// Copyright (c) 2019, Aous Naman
6// Copyright (c) 2019, Kakadu Software Pty Ltd, Australia
7// Copyright (c) 2019, The University of New South Wales, Australia
8//
9// Redistribution and use in source and binary forms, with or without
10// modification, are permitted provided that the following conditions are
11// met:
12//
13// 1. Redistributions of source code must retain the above copyright
14// notice, this list of conditions and the following disclaimer.
15//
16// 2. Redistributions in binary form must reproduce the above copyright
17// notice, this list of conditions and the following disclaimer in the
18// documentation and/or other materials provided with the distribution.
19//
20// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
21// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
23// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
26// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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29// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31//***************************************************************************/
32// This file is part of the OpenJPH software implementation.
33// File: ojph_colour_avx2.cpp
34// Author: Aous Naman
35// Date: 11 October 2019
36//***************************************************************************/
37
38#include <cmath>
39
40#include "ojph_defs.h"
41#include "ojph_arch.h"
42#include "ojph_colour.h"
43
44#include <immintrin.h>
45
46namespace ojph {
47 namespace local {
48
50 void avx2_cnvrt_si32_to_si32_shftd(const si32 *sp, si32 *dp, int shift,
51 ui32 width)
52 {
53 __m256i sh = _mm256_set1_epi32(shift);
54 for (int i = (width + 7) >> 3; i > 0; --i, sp+=8, dp+=8)
55 {
56 __m256i s = _mm256_loadu_si256((__m256i*)sp);
57 s = _mm256_add_epi32(s, sh);
58 _mm256_storeu_si256((__m256i*)dp, s);
59 }
60 }
61
63 void avx2_rct_forward(const si32 *r, const si32 *g, const si32 *b,
64 si32 *y, si32 *cb, si32 *cr, ui32 repeat)
65 {
66 for (int i = (repeat + 7) >> 3; i > 0; --i)
67 {
68 __m256i mr = _mm256_load_si256((__m256i*)r);
69 __m256i mg = _mm256_load_si256((__m256i*)g);
70 __m256i mb = _mm256_load_si256((__m256i*)b);
71 __m256i t = _mm256_add_epi32(mr, mb);
72 t = _mm256_add_epi32(t, _mm256_slli_epi32(mg, 1));
73 _mm256_store_si256((__m256i*)y, _mm256_srai_epi32(t, 2));
74 t = _mm256_sub_epi32(mb, mg);
75 _mm256_store_si256((__m256i*)cb, t);
76 t = _mm256_sub_epi32(mr, mg);
77 _mm256_store_si256((__m256i*)cr, t);
78
79 r += 8; g += 8; b += 8;
80 y += 8; cb += 8; cr += 8;
81 }
82 }
83
85 void avx2_rct_backward(const si32 *y, const si32 *cb, const si32 *cr,
86 si32 *r, si32 *g, si32 *b, ui32 repeat)
87 {
88 for (int i = (repeat + 7) >> 3; i > 0; --i)
89 {
90 __m256i my = _mm256_load_si256((__m256i*)y);
91 __m256i mcb = _mm256_load_si256((__m256i*)cb);
92 __m256i mcr = _mm256_load_si256((__m256i*)cr);
93
94 __m256i t = _mm256_add_epi32(mcb, mcr);
95 t = _mm256_sub_epi32(my, _mm256_srai_epi32(t, 2));
96 _mm256_store_si256((__m256i*)g, t);
97 __m256i u = _mm256_add_epi32(mcb, t);
98 _mm256_store_si256((__m256i*)b, u);
99 u = _mm256_add_epi32(mcr, t);
100 _mm256_store_si256((__m256i*)r, u);
101
102 y += 8; cb += 8; cr += 8;
103 r += 8; g += 8; b += 8;
104 }
105 }
106
107 }
108}
void avx2_rct_forward(const si32 *r, const si32 *g, const si32 *b, si32 *y, si32 *cb, si32 *cr, ui32 repeat)
void avx2_rct_backward(const si32 *y, const si32 *cb, const si32 *cr, si32 *r, si32 *g, si32 *b, ui32 repeat)
void avx2_cnvrt_si32_to_si32_shftd(const si32 *sp, si32 *dp, int shift, ui32 width)
int32_t si32
Definition: ojph_defs.h:55
uint32_t ui32
Definition: ojph_defs.h:54