my_image *load_image(boost::filesystem::path & aPath, int nbytes, bool for_bmp, bool inverse)
{
if (aPath.extension().compare(".bmp") == 0) return loadBMP( aPath, nbytes, inverse);
if (aPath.extension().compare(".BMP") == 0) return loadBMP( aPath, nbytes, inverse);
if (aPath.extension().compare(".jpg") == 0) return loadJPEG( aPath, nbytes, for_bmp, inverse);
if (aPath.extension().compare(".JPG") == 0) return loadJPEG( aPath, nbytes, for_bmp, inverse);
if (aPath.extension().compare(".thb") == 0) return loadJPEG( aPath, nbytes, for_bmp, inverse);
if (aPath.extension().compare(".THB") == 0) return loadJPEG( aPath, nbytes, for_bmp, inverse);
if (aPath.extension().compare(".png") == 0) return loadPNG( aPath, nbytes, for_bmp, inverse);
if (aPath.extension().compare(".PNG") == 0) return loadPNG( aPath, nbytes, for_bmp, inverse);
if (aPath.extension().compare(".tif") == 0) return loadTIFF( aPath, nbytes, for_bmp, inverse);
if (aPath.extension().compare(".TIF") == 0) return loadTIFF( aPath, nbytes, for_bmp, inverse);
return NULL;
}
RawImage::RawImage(const char *path) throw(ImageException) :
_type(GL_RGB),
_texId(0),
_bytesPerPixel(0),
_width(0),
_height(0),
_pixels(NULL)
{
const char *filename = basename(const_cast<char *>(path));
if (filename == NULL)
throw ImageException("Invalid image filename: %s does not name a file.", filename);
const char *ext = strrchr(filename, '.');
if (ext == NULL)
throw ImageException("Unknown image format.");
FILE *file = fopen(path, "rb");
if (file == NULL)
throw ImageException("File not found: %s.", filename);
try {
if (strcasecmp(ext, ".bmp") == 0) {
loadBMP(file);
} else if (strcasecmp(ext, ".tga") == 0) {
loadTGA(file);
} else if (strcasecmp(ext, ".ppm") == 0) {
loadPPM(file);
} else if (strcasecmp(ext, ".jpg") == 0 || strcasecmp(ext, ".jpeg") == 0) {
loadJPG(file);
} else if (strcasecmp(ext, ".png") == 0) {
loadPNG(file);
} else if (strcasecmp(ext, ".tif") == 0 || strcasecmp(ext, ".tiff") == 0) {
loadTIFF(path);
} else {
throw ImageException("Unknown image format: %s", ext);
}
fclose(file);
} catch (ImageException& ex) {
fclose(file);
if (_pixels != NULL)
delete _pixels;
throw ex;
}
}
/* Function to load a list of TIFF files, and stack them into a Volume image. */
Volume loadTIFFStack(std::vector<std::string> filenames)
{
//Sort the filenames, as this order determines the stack
std::sort(filenames.begin(), filenames.end());
Volume vol;
for (std::vector<std::string>::iterator fptr = filenames.begin(); fptr != filenames.end(); ++fptr)
{
Image img = loadTIFF(*fptr);
if (vol.width == 0) {
vol.width = img.width;
vol.height = img.height;
}
if ((img.width != vol.width) || (img.height != vol.height))
throw std::runtime_error("Images have varying dimensions");
const size_t last_size = vol.pixels.size();
vol.pixels.resize(vol.pixels.size() + vol.width * vol.height);
std::copy(img.pixels.begin(), img.pixels.end(), vol.pixels.begin()+last_size);
++vol.depth;
}
return vol;
}
