TTexturePtr LoadFromMemory(TFilePtr& aFile, const char* aLogdata)
{
LOG_PARAMS(aLogdata);
if (!ValidateFileHeader(aFile)) {
LOG_ERROR("Could not load image %s: Invalid file header", aLogdata);
return TTexturePtr();
}
png_structp pngPtr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (pngPtr == nullptr) {
LOG_ERROR("Could not initialize png read struct for %s", aLogdata);
return TTexturePtr();
}
TTexturePtr result = LoadPNG(aFile, aLogdata, pngPtr);
png_destroy_read_struct(&pngPtr, nullptr, nullptr);
return result;
}
/**
Loads and checks both bitmap file and info headers.
@param[in] FileStream The input file stream.
@param[out] FileHeader The bitmap file header read from the file.
@param[out] InfoHeader The bitmap info header read from the file.
@return One of #BitmapLoadStatus codes.
*/
static BitmapLoadStatus LoadAndValidateHeaders(std::ifstream& FileStream, BitmapFileHeader* FileHeader,
BitmapInfoHeader* InfoHeader)
{
FileStream.read(reinterpret_cast<char*>(FileHeader), sizeof(*FileHeader));
if (FileStream.bad()) {
return INVALID_FILE_HEADER;
}
if (!ValidateFileHeader(*FileHeader)) {
return INVALID_FILE_HEADER;
}
FileStream.read(reinterpret_cast<char*>(InfoHeader), sizeof(*InfoHeader));
if (FileStream.bad() || !ValidateInfoHeader(*InfoHeader)) {
return INVALID_INFO_HEADER;
}
return LOAD_SUCCESS;
}