def populate_from_dmd_file(self, f):
f.seek(0, os.SEEK_END) # Go to the end of the file to get its length
file_length = f.tell()
## MJO: Don't just skip the header! Check it.
f.seek(0) # Skip over the 4 byte DMD header.
dmd_version = struct.unpack("I", f.read(4))[0]
dmd_style = 0 # old
if(dmd_version == 0x00646D64):
# print("old dmd style")
pass
elif(dmd_version == 0x00DEFACE):
# print("full color dmd style")
dmd_style = 1
frame_count = struct.unpack("I", f.read(4))[0]
self.width = struct.unpack("I", f.read(4))[0]
self.height = struct.unpack("I", f.read(4))[0]
if(dmd_style==0):
if file_length != 16 + self.width * self.height * frame_count:
logging.getLogger('game.dmdcache').warning(f)
logging.getLogger('game.dmdcache').warning("expected size = {%d} got {%d}", (16 + self.width * self.height * frame_count), (file_length))
raise ValueError, "File size inconsistent with original DMD format header information. Old or incompatible file format?"
elif(dmd_style==1):
if file_length != 16 + self.width * self.height * frame_count * 3:
logging.getLogger('game.dmdcache').warning(f)
raise ValueError, "File size inconsistent with true-color DMD format header information. Old or incompatible file format?"
for frame_index in range(frame_count):
new_frame = Frame(self.width, self.height)
if(dmd_style==0):
str_frame = f.read(self.width * self.height)
new_frame.build_surface_from_8bit_dmd_string(str_frame)
elif(dmd_style==1):
str_frame = f.read(self.width * self.height * 3)
surface = pygame.image.fromstring(str_frame, (self.width, self.height), 'RGB')
new_frame.set_surface(surface)
self.frames.append(new_frame)
