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1624 giacomo 1
 1. Test bitstream
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    Small example bitstream (128x128 pixel dimensions) which employs all
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    picture_structure (top field, bottom field, frame), picture_coding_type
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    (I, P, and B), macroblock_type (forwards/backwards/interpolated,
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    intra/non-intra, coded/not-coded, quant/no quant, etc.), and
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    motion_type (field, frame, 16X8, dual prime) modes.
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 2. add trace printing for mpeg1 getblk routines.
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 3. modify getsys.c to parse program layer bitstreams (Systems)
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    with variable-length packets.
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 4. 24 bit X11 display
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    (borrow from Berkeley or find way for our code to use their interface)
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 5. MPEG-2 Transport layer systems streams parsing
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 6. Document IPR issue
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   provide CableLabs URL
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   how IPR relates to our disclaimer.
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 7. TIFF library support (YCbCr 4:4:4, 4:2:2, and 4:2:0 pictures)
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[deferred]
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10.  IDCT rounding
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  As per IDCT corridgendum (Savatier, MPEG 95/XXX)
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  [done, but verified ?]
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12. green dots in can
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  [ appears to be a display issue, probably related to convmat[]
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    error ]
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19. move Dual_Prime calculation into picture_data()
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20. motion vector calculation to include tappable stages to test
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    whether elements fall within [low:high] range.
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21. Integrate verifier routines
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22. Inter-layer verification routines
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    - check base and enhancement layers (e.g. SNR)
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23. Spatial verification
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   - considering that no base layer is available.
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24. SNR verification
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   [ done ]
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25. DP verification
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   [ not done.  No longer any bitstreams with Data Partitioning distributed
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     since DP is not part of any official Profile ]
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26. merge all global bitsteam element variables into
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    common data structure (similar to layer_data).  This is needed
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    for the verifier (whether or not headers in SNR and DP streams
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    are identical where needed to that of the base layer).
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27. investigate why MS-DOS wants an extra % sign for filename patterns
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     when more than one filename pattern is used in the command line argument
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28. convert -t (trace) flag into levels, merge with Verbose.
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29. seek to a specified frame number (support for MCI-like functions)
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30. document the "flash" VLC table decoding method in detail.
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    (namely how to map tables in Annex B to those in getvlc.h)
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31. MPEG-2 program stream compatibility
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   (a few minor bits of difference in the system header ).
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