void write_png(FileSystem::FileSourceFS &fs, const std::string &path, const Uint8 *bytes, int width, int height, int stride, int bytes_per_pixel) {
png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
if (!png_ptr) {
fprintf(stderr, "Couldn't create png_write_struct\n");
return;
}
png_infop info_ptr = png_create_info_struct(png_ptr);
if (!info_ptr) {
png_destroy_write_struct(&png_ptr, 0);
fprintf(stderr, "Couldn't create png_info_struct\n");
return;
}
//http://www.libpng.org/pub/png/libpng-1.2.5-manual.html#section-3.1
if (setjmp(png_jmpbuf(png_ptr))) {
png_destroy_write_struct(&png_ptr, &info_ptr);
fprintf(stderr, "Couldn't set png jump buffer\n");
return;
}
FILE *out = fs.OpenWriteStream(path);
if (!out) {
png_destroy_write_struct(&png_ptr, &info_ptr);
fprintf(stderr, "Couldn't open '%s/%s' for writing\n", fs.GetRoot().c_str(), path.c_str());
return;
}
int colour_type;
switch (bytes_per_pixel) {
case 1: colour_type = PNG_COLOR_TYPE_GRAY; break;
case 2: colour_type = PNG_COLOR_TYPE_GRAY_ALPHA; break;
case 3: colour_type = PNG_COLOR_TYPE_RGB; break;
case 4: colour_type = PNG_COLOR_TYPE_RGB_ALPHA; break;
default: assert(0); return;
}
png_init_io(png_ptr, out);
png_set_filter(png_ptr, 0, PNG_FILTER_NONE);
png_set_IHDR(png_ptr, info_ptr, width, height, 8, colour_type,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT);
png_bytepp rows = new png_bytep[height];
for (int i = 0; i < height; ++i) {
const Uint8 *row = bytes + ((height-i-1) * stride);
rows[i] = const_cast<Uint8*>(row);
}
png_set_rows(png_ptr, info_ptr, rows);
png_write_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, 0);
png_destroy_write_struct(&png_ptr, &info_ptr);
delete[] rows;
fclose(out);
}
bool IniConfig::Write(FileSystem::FileSourceFS &fs, const std::string &path)
{
FILE *f = fs.OpenWriteStream(path, FileSystem::FileSourceFS::WRITE_TEXT);
if (!f) {
fprintf(stderr, "Could not write config file '%s'\n", FileSystem::JoinPath(fs.GetRoot(), path).c_str());
return false;
}
for (std::map<std::string, std::string>::const_iterator i = m_map.begin(); i != m_map.end(); ++i) {
if (!(*i).second.empty())
fprintf(f, "%s=%s\n", (*i).first.c_str(), (*i).second.c_str());
}
fclose(f);
return true;
}
bool IniConfig::Write(FileSystem::FileSourceFS &fs, const std::string &path)
{
FILE *f = fs.OpenWriteStream(path, FileSystem::FileSourceFS::WRITE_TEXT);
if (!f) {
Output("Could not write config file '%s'\n", FileSystem::JoinPath(fs.GetRoot(), path).c_str());
return false;
}
for (SectionMapType::const_iterator secIt = m_map.begin(); secIt != m_map.end(); ++secIt) {
const MapType &map = secIt->second;
if (map.empty())
continue;
if (!secIt->first.empty()) {
fprintf(f, "\n[%s]\n", secIt->first.c_str());
}
for (MapType::const_iterator it = map.begin(); it != map.end(); ++it) {
if (!it->second.empty())
fprintf(f, "%s=%s\n", it->first.c_str(), it->second.c_str());
}
}
fclose(f);
return true;
}
