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Ana BobilloandMirco Miranda
296444189e
Images are allocated without being initialized, so a reader must write
every pixel of every line. The IFF reader did not always:
- Maya: nothing checked that the tiles cover the image: areas no tile
covers are now opaque black.
- readStandardImage(), readCDIImage(), readRGFXImage() and
readDEEPImage() copied min(bytesPerLine, decoded line) bytes, and some
decoded lines are shorter than the image line:
- a PBM with 8 bitplanes and a 64 color CMAP was taken for HAM and
allocated as RGB888, while PBM data are one index per pixel: HAM is
no longer applied to PBM images;
- other mismatches (e.g. HAM without CMAP, RGB8 with 32 bitplanes, CD-i
CLUT3 or RGB888, a truncated CD-i line) are now an error: a decoded
line that does not cover the image line is refused.
Added the read test pbm_64colors.iff, which fails without this change.