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SAFEBLOCKrfrbrrappendsumjoin)r9rDrrZremaining_sizeblockrrr _safe_read<s*      rc@seZdZddZddZdS) PyCodecStatecCsd|_d|_d|_d|_dS)Nr)xsizeysizexoffyoffrOrrrr0`s zPyCodecState.__init__cCs |j|j|j|j|j|jfSrK)rrrrrOrrrr%fs zPyCodecState.extentsN)r)r*r+r0r%rrrrr_s rc@s6eZdZddZddZddZddZd d d Zd S) PyCodeccGs(d|_t|_d|_||_||dSrK)rmrrRfdrCinit)rGrCr(rrrr0ks zPyCodec.__init__cC ||_dS)z Override to perform codec specific initialization :param args: Array of args items from the tile entry :returns: None N)r(rrrrrr z PyCodec.initcCsdS)zT Override to perform codec specific cleanup :returns: None NrrOrrrrz{szPyCodec.cleanupcCr)z Called from ImageFile to set the Python file-like object :param fd: A Python file-like object :returns: None N)r)rGrrrrrwrz PyCodec.setfdNcCs||_|r |\}}}}nd\}}}}|dkr%|dkr%|jj\|j_|j_n||j_||j_|||j_|||j_|jjdksE|jjdkrKd}t||jj|jj|jjdksg|jj|jj|jjdkrmd}t|dS)z Called from ImageFile to set the core output image for the codec :param im: A core image object :param extents: a 4 tuple of (x0, y0, x1, y1) defining the rectangle for this tile :returns: None )rrrrrzSize cannot be negativerz Tile cannot extend outside imageN)rmrDrRrrrr ValueError)rGrmr%Zx0Zy0x1y1rrrrrus$    zPyCodec.setimagerK)r)r*r+r0rrzrwrurrrrrjs   rc@s2eZdZdZdZeddZddZd dd ZdS) PyDecoderz Python implementation of a format decoder. 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