Add simple PGM and PPM image writers
This commit is contained in:
parent
dd3f25decc
commit
54f6811058
@ -40,6 +40,8 @@ UTIL_FILES = \
|
|||||||
guid.hpp \
|
guid.hpp \
|
||||||
hash.cpp \
|
hash.cpp \
|
||||||
hash.hpp \
|
hash.hpp \
|
||||||
|
image.cpp \
|
||||||
|
image.hpp \
|
||||||
io.cpp \
|
io.cpp \
|
||||||
io.hpp \
|
io.hpp \
|
||||||
ip.cpp \
|
ip.cpp \
|
||||||
|
82
image.cpp
Normal file
82
image.cpp
Normal file
@ -0,0 +1,82 @@
|
|||||||
|
/*
|
||||||
|
* This file is part of libgim.
|
||||||
|
*
|
||||||
|
* libgim is free software: you can redistribute it and/or modify it under the
|
||||||
|
* terms of the GNU General Public License as published by the Free Software
|
||||||
|
* Foundation, either version 3 of the License, or (at your option) any later
|
||||||
|
* version.
|
||||||
|
*
|
||||||
|
* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
|
||||||
|
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||||||
|
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
||||||
|
* details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with libgim. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*
|
||||||
|
* Copyright 2011 Danny Robson <danny@nerdcruft.net>
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
#include "image.hpp"
|
||||||
|
|
||||||
|
#include "debug.hpp"
|
||||||
|
#include "except.hpp"
|
||||||
|
|
||||||
|
#include <fstream>
|
||||||
|
|
||||||
|
|
||||||
|
static void
|
||||||
|
write_netpbm (const uint8_t *restrict pixels,
|
||||||
|
size_t width,
|
||||||
|
size_t height,
|
||||||
|
size_t stride,
|
||||||
|
const boost::filesystem::path &path,
|
||||||
|
const char* MAGIC) {
|
||||||
|
CHECK_HARD (pixels);
|
||||||
|
CHECK_HARD (width > 0);
|
||||||
|
CHECK_HARD (stride >= width);
|
||||||
|
CHECK_HARD (height > 0);
|
||||||
|
|
||||||
|
// Establish an output stream
|
||||||
|
std::ofstream output (path.native (), std::ios::binary);
|
||||||
|
if (!output.good ())
|
||||||
|
throw util::output_error ("Unable to open output file");
|
||||||
|
|
||||||
|
// Write the PPM header.
|
||||||
|
output << MAGIC << "\n"
|
||||||
|
<< width << "\n"
|
||||||
|
<< height << "\n"
|
||||||
|
<< (size_t)std::numeric_limits<uint8_t>::max () << "\n";
|
||||||
|
|
||||||
|
// Write the data rows
|
||||||
|
for (size_t y = 0; y < height; ++y) {
|
||||||
|
for (size_t x = 0; x < width; ++x)
|
||||||
|
output << (size_t)pixels[y * stride + x] << " ";
|
||||||
|
|
||||||
|
output << "\n";
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
util::pgm::write (const uint8_t *restrict pixels,
|
||||||
|
size_t width,
|
||||||
|
size_t height,
|
||||||
|
size_t stride,
|
||||||
|
const boost::filesystem::path &path) {
|
||||||
|
// TODO: We should switch between P2 (ascii) and P5 (binary)
|
||||||
|
static const char MAGIC[] = "P2";
|
||||||
|
write_netpbm (pixels, width, height, stride, path, MAGIC);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
void
|
||||||
|
util::ppm::write (const uint8_t *restrict pixels,
|
||||||
|
size_t width,
|
||||||
|
size_t height,
|
||||||
|
size_t stride,
|
||||||
|
const boost::filesystem::path &path) {
|
||||||
|
// TODO: We should switch between P3 (ascii) and P6 (binary)
|
||||||
|
static const char MAGIC[] = "P6";
|
||||||
|
write_netpbm (pixels, width, height, stride, path, MAGIC);
|
||||||
|
}
|
45
image.hpp
Normal file
45
image.hpp
Normal file
@ -0,0 +1,45 @@
|
|||||||
|
/*
|
||||||
|
* This file is part of libgim.
|
||||||
|
*
|
||||||
|
* libgim is free software: you can redistribute it and/or modify it under the
|
||||||
|
* terms of the GNU General Public License as published by the Free Software
|
||||||
|
* Foundation, either version 3 of the License, or (at your option) any later
|
||||||
|
* version.
|
||||||
|
*
|
||||||
|
* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
|
||||||
|
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||||||
|
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
||||||
|
* details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with libgim. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*
|
||||||
|
* Copyright 2011 Danny Robson <danny@nerdcruft.net>
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __UTIL_IMAGE_HPP
|
||||||
|
#define __UTIL_IMAGE_HPP
|
||||||
|
|
||||||
|
#include <cstdint>
|
||||||
|
#include <cstdlib>
|
||||||
|
#include <boost/filesystem/path.hpp>
|
||||||
|
|
||||||
|
namespace util {
|
||||||
|
struct pgm {
|
||||||
|
static void write (const uint8_t *restrict pixels,
|
||||||
|
size_t width,
|
||||||
|
size_t height,
|
||||||
|
size_t stride,
|
||||||
|
const boost::filesystem::path &path);
|
||||||
|
};
|
||||||
|
|
||||||
|
struct ppm {
|
||||||
|
static void write (const uint8_t *restrict pixels,
|
||||||
|
size_t width,
|
||||||
|
size_t height,
|
||||||
|
size_t stride,
|
||||||
|
const boost::filesystem::path &path);
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif
|
Loading…
Reference in New Issue
Block a user