OpenJPH Open-source implementation of JPEG2000 Part-15

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ojph_codestream_avx.cpp
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1//***************************************************************************/
2// This software is released under the 2-Clause BSD license, included
3// below.
4//
5// Copyright (c) 2022, Aous Naman
6// Copyright (c) 2022, Kakadu Software Pty Ltd, Australia
7// Copyright (c) 2022, 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
28// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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_codestream_avx.cpp
34// Author: Aous Naman
35// Date: 15 May 2022
36//***************************************************************************/
37
38#include "ojph_arch.h"
39#if defined(OJPH_ARCH_I386) || defined(OJPH_ARCH_X86_64)
40#include <immintrin.h>
41#include "ojph_defs.h"
42
43 namespace ojph {
44 namespace local {
45
47 void avx_mem_clear(void* addr, size_t count)
48 {
49 float* p = (float*)addr;
50 __m256 zero = _mm256_setzero_ps();
51 for (size_t i = 0; i < count; i += 32, p += 8)
52 _mm256_storeu_ps(p, zero);
53 }
54
55 }
56}
57
58#endif
ojph::local
Definition ojph_bitbuffer_read.h:52
ojph::local::avx_mem_clear
void avx_mem_clear(void *addr, size_t count)
ojph
Definition ojph_img_io.h:52
ojph_arch.h
ojph_defs.h