Lines Matching refs:ImageChunk

597 class ImageChunk(object):  class
730     if chunk_hdr_sz != struct.calcsize(ImageChunk.FORMAT):
747       header_bin = self._image.read(struct.calcsize(ImageChunk.FORMAT))
748       (chunk_type, _, chunk_sz, total_sz) = struct.unpack(ImageChunk.FORMAT,
750       data_sz = total_sz - struct.calcsize(ImageChunk.FORMAT)
752       if chunk_type == ImageChunk.TYPE_RAW:
757         self._chunks.append(ImageChunk(ImageChunk.TYPE_RAW,
765       elif chunk_type == ImageChunk.TYPE_FILL:
770         self._chunks.append(ImageChunk(ImageChunk.TYPE_FILL,
776       elif chunk_type == ImageChunk.TYPE_DONT_CARE:
780         self._chunks.append(ImageChunk(ImageChunk.TYPE_DONT_CARE,
786       elif chunk_type == ImageChunk.TYPE_CRC32:
854     self._image.write(struct.pack(ImageChunk.FORMAT,
855                                   ImageChunk.TYPE_DONT_CARE,
858                                   struct.calcsize(ImageChunk.FORMAT)))
882     self._image.write(struct.pack(ImageChunk.FORMAT,
883                                   ImageChunk.TYPE_RAW,
887                                   struct.calcsize(ImageChunk.FORMAT)))
915     self._image.write(struct.pack(ImageChunk.FORMAT,
916                                   ImageChunk.TYPE_FILL,
919                                   4 + struct.calcsize(ImageChunk.FORMAT)))
965       if chunk.chunk_type == ImageChunk.TYPE_RAW:
968       elif chunk.chunk_type == ImageChunk.TYPE_FILL:
973         assert chunk.chunk_type == ImageChunk.TYPE_DONT_CARE
1023         if chunk.chunk_type == ImageChunk.TYPE_RAW:
1025                          struct.calcsize(ImageChunk.FORMAT) + num_to_keep)
1027         elif chunk.chunk_type == ImageChunk.TYPE_FILL:
1029                          struct.calcsize(ImageChunk.FORMAT) + 4)
1032           assert chunk.chunk_type == ImageChunk.TYPE_DONT_CARE
1033           truncate_at = chunk.chunk_offset + struct.calcsize(ImageChunk.FORMAT)
1036         total_sz = data_sz + struct.calcsize(ImageChunk.FORMAT)
1038         self._image.write(struct.pack(ImageChunk.FORMAT,