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/*
* Descent 3
* Copyright (C) 2024 Descent Developers
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "NewBitmap.h"
#include "pserror.h"
#include <stb_image_write.h>
NewBitmap::NewBitmap(uint32_t w, uint32_t h, PixelDataFormat format, bool flippedY)
: _w(w), _h(h), _format(format), _flippedY(flippedY), _data(allocateData(w, h, format)) {
ASSERT(_data.get());
}
std::unique_ptr<uint8_t[]> NewBitmap::allocateData(uint32_t w, uint32_t h, PixelDataFormat format) {
switch (format) {
case PixelDataFormat::RGBA32: return std::make_unique<uint8_t[]>(w * h * 4);
default: return nullptr;
}
}
uint32_t NewBitmap::getNumComponents() const {
switch (_format) {
case PixelDataFormat::RGBA32: return 4;
default: return 0;
}
}
uint32_t NewBitmap::getStride() const {
switch (_format) {
case PixelDataFormat::RGBA32: return _w * 4;
default: return 0;
}
}
bool NewBitmap::saveAsPNG(const char *filePath) {
// TODO: Support more formats? stb_write supports at least RGB and RGBA
ASSERT(_format == PixelDataFormat::RGBA32);
stbi_flip_vertically_on_write(_flippedY);
return stbi_write_png(filePath, _w, _h, getNumComponents(), _data.get(), getStride()) == 0;
}
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