File size: 3,883 Bytes
be903e2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 | // Tencent is pleased to support the open source community by making ncnn available.
//
// Copyright (C) 2017 THL A29 Limited, a Tencent company. All rights reserved.
//
// Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the License at
//
// https://opensource.org/licenses/BSD-3-Clause
//
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
#ifndef IMREADWRITE_H
#define IMREADWRITE_H
#include <limits.h>
#include <string.h>
#include "allocator.h"
#include "mat.h"
#ifndef NCNN_XADD
using ncnn::NCNN_XADD;
#endif
typedef unsigned char uchar;
enum
{
CV_LOAD_IMAGE_UNCHANGED = -1,
CV_LOAD_IMAGE_GRAYSCALE = 0,
CV_LOAD_IMAGE_COLOR = 1,
};
enum
{
CV_IMWRITE_JPEG_QUALITY = 1
};
// minimal opencv style data structure implementation
namespace cv {
#define CV_8UC1 1
#define CV_8UC3 3
#define CV_8UC4 4
#define CV_32FC1 4
struct Mat
{
Mat()
: data(0), refcount(0), rows(0), cols(0), c(0)
{
}
Mat(int _rows, int _cols, int flags)
: data(0), refcount(0)
{
create(_rows, _cols, flags);
}
// copy
Mat(const Mat& m)
: data(m.data), refcount(m.refcount)
{
if (refcount)
NCNN_XADD(refcount, 1);
rows = m.rows;
cols = m.cols;
c = m.c;
}
Mat(int _rows, int _cols, int flags, void* _data)
: data((unsigned char*)_data), refcount(0)
{
rows = _rows;
cols = _cols;
c = flags;
}
~Mat()
{
release();
}
// assign
Mat& operator=(const Mat& m)
{
if (this == &m)
return *this;
if (m.refcount)
NCNN_XADD(m.refcount, 1);
release();
data = m.data;
refcount = m.refcount;
rows = m.rows;
cols = m.cols;
c = m.c;
return *this;
}
void create(int _rows, int _cols, int flags)
{
release();
rows = _rows;
cols = _cols;
c = flags;
if (total() > 0)
{
// refcount address must be aligned, so we expand totalsize here
size_t totalsize = (total() + 3) >> 2 << 2;
data = (uchar*)ncnn::fastMalloc(totalsize + (int)sizeof(*refcount));
refcount = (int*)(((uchar*)data) + totalsize);
*refcount = 1;
}
}
void release()
{
if (refcount && NCNN_XADD(refcount, -1) == 1)
ncnn::fastFree(data);
data = 0;
rows = 0;
cols = 0;
c = 0;
refcount = 0;
}
Mat clone() const
{
if (empty())
return Mat();
Mat m(rows, cols, c);
if (total() > 0)
{
memcpy(m.data, data, total());
}
return m;
}
bool empty() const
{
return data == 0 || total() == 0;
}
int type() const
{
return c;
}
size_t total() const
{
return (size_t)cols * rows * c;
}
uchar* data;
// pointer to the reference counter;
// when points to user-allocated data, the pointer is NULL
int* refcount;
int rows;
int cols;
int c;
};
enum ImreadModes
{
IMREAD_UNCHANGED = -1,
IMREAD_GRAYSCALE = 0,
IMREAD_COLOR = 1
};
Mat imread(const std::string& path, int flags = IMREAD_COLOR);
enum ImwriteFlags
{
IMWRITE_JPEG_QUALITY = 1
};
bool imwrite(const std::string& path, const Mat& m, const std::vector<int>& params = std::vector<int>());
} // namespace cv
#endif // IMREADWRITE_H
|