111 lines
2.8 KiB
Plaintext
111 lines
2.8 KiB
Plaintext
t2p TODO list
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$Id: TODO,v 1.18 2003/03/19 23:06:35 eric Exp $
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No particular order.
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-----------------------------------------------------------------------------
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t2p:
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* input handlers shouldn't use globals, use pointer to private structure
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instead.
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* multiple "-b" options on command line
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* page labels on command line
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* pages containing multiple images
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* spec language needs major changes
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* split process_page into multiple parts:
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* open page
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* add image
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* close page
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* overlay G4 images in different colors - use ImageMask and the fill color
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* crop
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* page sizes
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* metric
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* check page size, if off by too much, generate warning message and
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use actual scan size
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* multiple page sizes, pick the right one?
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* range checking
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* rotation (0, 90, 180, or 270)
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* page number style (D, r, R, a, A)
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* watermarking - in image?
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* flip, transpose
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* support PNG, BMP, and other input file formats
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* generate text, line art - option to embed fonts
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* bilevel thresholding of color and grey scale input
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* automatic separation using timify code from Tim Shoppa?
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* automatic image detection using DCT or FFT
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* downsampling
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-----------------------------------------------------------------------------
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bitblt routines:
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* finish optimized bitblt code
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* optimize inner loops in flip_h and flip_v with Duff's Device
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* check for endian problems
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* reading TIFF - don't bit-reverse on big-endian machines
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* rle table
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* g4_get_pixel()
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* g4_find_pixel()
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* g4_find_pixel should use native instructions where available
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* 386: BSF bit scan forward
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* PowerPC: CLTLZ, CNTLZW count leasing zeros (CNTLZD 64-bit)
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* MC68020: BFFFO bit field find first one
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* Alpha 21264A: CTTZ count trailing zeros
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-----------------------------------------------------------------------------
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PDF routines:
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[Page numbers refer to _Portable Document Format Reference Manual_ by
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Adobe Systems Incorporated, Addison-Wesley, 1993.]
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* ModDate and CreationDate keys in Info dict
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* ID key in trailer dict
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* proper output of real numbers - variable precision, no exponent
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* bookmarks (outline) should allow alternate destination specs, currently
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only /Fit is supported
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* balance pages tree - currently a degenerate single-level tree, but the
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PDF spec recommends max. of 6 children per parent
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* thumbnails
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* PDF Page rotate attribute (p. 53)?
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* memory management - need to reference count all structures and free
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them as appropriate - not necessary for t2p program
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* when an object is written to the file, set a flag to indicate that
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it is now immutable
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* name trees, number trees - when finalize is called, set immutable flag
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and allow no further changes
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* buffered streams (vs. current callback mechanism for unbuffered streams)
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* add support for streams with multiple filters
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* linearize ("optimize")
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