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// Copyright (c) 2016 Egor Tensin <Egor.Tensin@gmail.com>
// This file is part of the "AES tools" project.
// For details, see https://github.com/egor-tensin/aes-tools.
// Distributed under the MIT License.
#include <windows.h>
#include <cstddef>
#include <cstring>
#include <string>
#include <utility>
#include <vector>
namespace bmp
{
class BmpFile
{
public:
BmpFile(std::vector<char>&& buffer)
: buffer{std::move(buffer)}
, header_size{extract_pixels_offset()}
{ }
const void* get_buffer() const { return buffer.data(); }
std::size_t get_size() const { return buffer.size(); }
std::size_t get_header_size() const { return header_size; }
const void* get_pixels() const
{
return buffer.data() + get_header_size();
}
std::size_t get_pixels_size() const
{
return get_size() - get_header_size();
}
void replace_pixels(std::vector<unsigned char>&& pixels)
{
buffer.resize(get_header_size() + pixels.size());
std::memcpy(buffer.data() + get_header_size(), pixels.data(), pixels.size());
}
private:
std::size_t extract_pixels_offset() const
{
const auto header = reinterpret_cast<const BITMAPFILEHEADER*>(get_buffer());
return header->bfOffBits;
}
std::vector<char> buffer;
std::size_t header_size;
};
}
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