static Image* LoadImage (ArchiveFile& file, const char *extension)
{
RGBAImage* image = (RGBAImage *) 0;
/* load the buffer from pk3 or filesystem */
ScopedArchiveBuffer buffer(file);
GdkPixbufLoader *loader = gdk_pixbuf_loader_new_with_type(extension, (GError**) 0);
if (loader == (GdkPixbufLoader*)0) {
g_warning("could not get a loader for: '%s'\n", extension);
return image;
}
GError *error = (GError *) 0;
if (gdk_pixbuf_loader_write(loader, (const guchar *) buffer.buffer, static_cast<gsize> (buffer.length),
&error)) {
int pos = 0;
GdkPixbuf *pixbuf = gdk_pixbuf_loader_get_pixbuf(loader);
const int width = gdk_pixbuf_get_width(pixbuf);
const int height = gdk_pixbuf_get_height(pixbuf);
const gboolean hasAlpha = gdk_pixbuf_get_has_alpha(pixbuf);
const int stepWidth = gdk_pixbuf_get_n_channels(pixbuf);
const guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
image = new RGBAImage(width, height, false);
byte *rgba = image->getRGBAPixels();
const int rowextra = gdk_pixbuf_get_rowstride(pixbuf) - width * stepWidth;
for (int y = 0; y < height; ++y, pixels += rowextra) {
for (int x = 0; x < width; ++x) {
rgba[pos++] = *(pixels++);
rgba[pos++] = *(pixels++);
rgba[pos++] = *(pixels++);
if (hasAlpha && *pixels != 255)
image->setHasAlpha(true);
rgba[pos++] = hasAlpha ? *(pixels++) : 255;
}
}
g_object_unref(pixbuf);
} else {
g_warning("image could not get loaded: '%s' %s\n",
file.getName().c_str(), (error != (GError *) 0) ? error->message : "");
if (error)
g_error_free(error);
}
gdk_pixbuf_loader_close(loader, (GError**) 0);
return image;
}
static Image* LoadImageGDK (ArchiveFile& file)
{
// Allocate a new GdkPixBuf and create an alpha-channel with alpha=1.0
GdkPixbuf* rawPixbuf = gdk_pixbuf_new_from_file(file.getName().c_str(), NULL);
// Only create an alpha channel if the other rawPixbuf could be loaded
GdkPixbuf* img = (rawPixbuf != NULL) ? gdk_pixbuf_add_alpha(rawPixbuf, TRUE, 255, 0, 255) : NULL;
if (img != NULL) {
// Allocate a new image
RGBAImage* image = new RGBAImage(gdk_pixbuf_get_width(img), gdk_pixbuf_get_height(img), false);
// Initialise the source buffer pointers
guchar* gdkStart = gdk_pixbuf_get_pixels(img);
int rowstride = gdk_pixbuf_get_rowstride(img);
int numChannels = gdk_pixbuf_get_n_channels(img);
// Set the target buffer pointer to the first RGBAPixel
RGBAPixel* targetPixel = image->pixels;
// Now do an unelegant cycle over all the pixels and move them into the target
for (unsigned int y = 0; y < image->height; y++) {
for (unsigned int x = 0; x < image->width; x++) {
guchar* gdkPixel = gdkStart + y * rowstride + x * numChannels;
// Copy the values from the GdkPixel
targetPixel->red = gdkPixel[0];
targetPixel->green = gdkPixel[1];
targetPixel->blue = gdkPixel[2];
targetPixel->alpha = gdkPixel[3];
if (targetPixel->alpha != 255)
image->setHasAlpha(true);
// Increase the pointer
targetPixel++;
}
}
// Free the GdkPixbufs from the memory
g_object_unref(G_OBJECT(img));
g_object_unref(G_OBJECT(rawPixbuf));
return image;
} else {
g_warning("image could not get loaded: '%s'\n", file.getName().c_str());
}
// No image could be loaded, return NULL
return NULL;
}
