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[devel] Added "option READ_16_TO_8 on" to contrib/pngminim/decoder/pnglibconf.dfa

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and contrib/pngminim/preader/pnglibconf.dfa
This commit is contained in:
Glenn Randers-Pehrson 2010-08-27 09:37:06 -05:00
parent 2f70282295
commit 0c57414490
4 changed files with 57 additions and 8 deletions
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4
contrib/pngminim/decoder/pngusr.dfa
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@ -12,16 +12,19 @@ everything = off
# All that is required is some read code. This example switches
# on the sequential read code (see ../preader for a progressive
# read example).
option SEQUENTIAL_READ on
# You must choose fixed or floating point arithmetic:
# option FLOATING_POINT on
option FIXED_POINT on
# You must chose the internal fixed point implementation or to
# use the system floating point. The latter is considerably
# smaller (by about 1kbyte on an x86 system):
# option FLOATING_ARITHMETIC on
option FLOATING_ARITHMETIC off
# Your program will probably need other options. The example
@ -31,3 +34,4 @@ option FLOATING_ARITHMETIC off
option SETJMP on
option STDIO on
option READ_EXPAND on
option READ_16BIT on

2
contrib/pngminim/encoder/pngusr.dfa
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@ -9,6 +9,8 @@
# First all the build options off:
everything = off
option NO_16BIT on
# Switch on the write code - this makes a minimalist encoder
option WRITE on

57
scripts/pnglibconf.dfa
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@ -6,7 +6,7 @@
#
com pnglibconf.h - library build configuration
com
com libpng version 1.5.0beta46 - last changed on August 26, 2010
com libpng version 1.5.0beta46 - last changed on August 27, 2010
com
com Copyright (c) 1998-2010 Glenn Randers-Pehrson
com
@ -136,6 +136,7 @@ logunsupported = 1
# (i.e. if it is not defined at this point) it will be forced to '2' here when
# using Watcom. This indicates to the other header files that Watcom behaviour
# is required where appropriate.
@#ifdef __WATCOMC__
@# ifndef PNG_API_RULE
@# define PNG_API_RULE 2 /* Use Watcom calling conventions */
@ -144,6 +145,7 @@ logunsupported = 1
# Note that PNG_USR_CONFIG only has an effect when building
# pnglibconf.h
setting USER_CONFIG
setting USER_PRIVATEBUILD
setting USER_DLLFNAME_POSTFIX
@ -156,24 +158,29 @@ setting USER_VERSIONINFO_LEGALTRADEMARKS
# pngconf.h)
# Changing this setting has a fundamental affect on the PNG ABI,
# do not release shared libraries with this changed.
setting API_RULE default 0
# Default to using the read macros
setting DEFAULT_READ_MACROS default 1
# The alternative is to call functions to read PNG values, if
# the functions are turned *off* the read macros must always
# be enabled, so turning this off will actually force the
# USE_READ_MACROS option on (see pngconf.h)
option READ_INT_FUNCTIONS requires READ
# The same for write, but these can only be switched off if
# no writing is required at all - hence the use of an 'enables'
# not a 'requires' below:
option WRITE_INT_FUNCTIONS disabled
option WRITE enables WRITE_INT_FUNCTIONS
# Generic options - affect both read and write.
option WARNINGS
option BENIGN_ERRORS
option MNG_FEATURES
@ -181,14 +188,17 @@ option MNG_FEATURES
# Arithmetic options, the first is the big switch that chooses between internal
# floating and fixed point arithmetic implementations - it does not affect any
# APIs. The second two (the _POINT settings) switch off individual APIs.
option FLOATING_ARITHMETIC
option FLOATING_POINT enables ok_math
option FIXED_POINT enables ok_math
# Added at libpng version 1.4.0
option ERROR_TEXT
# The following is always on (defined empty)
setting CALLOC_SUPPORTED default
# This protects us against compilers that run on a windowing system
@ -199,34 +209,42 @@ setting CALLOC_SUPPORTED default
# will also prevent these, plus will prevent the entire set of stdio
# macros and functions (FILE *, printf, etc.) from being compiled and used,
# unless (PNG_DEBUG > 0) has been #defined.
option STDIO
option CONSOLE_IO requires STDIO
# Note: prior to 1.5.0 this option could not be disabled if STDIO
# was enabled.
option TIME_RFC1123 requires STDIO
# PNG_SETJMP_NOT_SUPPORTED is an old equivalent for NO_SETJMP
option SETJMP
= NO_SETJMP SETJMP_NOT_SUPPORTED
# For the moment this is disabled (no code support):
option ERROR_NUMBERS disabled
# If this is disabled it is not possible for apps to get the
# values from the 'info' structure, this effectively removes
# quite a lot of the READ API.
option EASY_ACCESS
# Added at libpng-1.2.0
option USER_MEM
# Added at libpng-1.4.0
option IO_STATE
# This is only for PowerPC big-endian and 680x0 systems
# some testing, not enabled by default.
# NO LONGER USED
#option READ_BIG_ENDIAN disabled
# Allow users to control limits on what the READ code will
@ -234,27 +252,33 @@ option IO_STATE
# Added at libpng-1.2.43; adds limit fields to png_struct,
# allows some usages of these fields
option USER_LIMITS
# Added at libpng-1.2.6; adds setting APIs, allows additional
# usage of this field (UTSL)
option SET_USER_LIMITS requires USER_LIMITS
# Feature added at libpng-1.4.0, this flag added at 1.4.1
option SET_USER_LIMITS enables SET_CHUNK_CACHE_LIMIT
# Feature added at libpng-1.4.1, this flag added at 1.4.1
option SET_USER_LIMITS enables SET_CHUNK_MALLOC_LIMIT
# Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGs no matter
# how large, set these two limits to 0x7fffffffL
setting USER_WIDTH_MAX default 1000000L
setting USER_HEIGHT_MAX default 1000000L
# Added at libpng-1.2.43. To accept all valid PNGs no matter
# how large, set these two limits to 0.
setting USER_CHUNK_CACHE_MAX default 0
# Added at libpng-1.2.43
setting USER_CHUNK_MALLOC_MAX default 0
# All of the following options relate to code capabilities for
@ -265,11 +289,10 @@ setting USER_CHUNK_MALLOC_MAX default 0
# READ options
option READ_16BIT requires READ enables 16BIT
option NO_READ_16BIT requires READ_16_TO_8
option READ enables READ_INTERLACING
option READ_16BIT requires READ enables 16BIT
option READ_QUANTIZE requires READ
option READ_TRANSFORMS requires READ
@ -279,7 +302,7 @@ option READ_EXPAND requires READ_TRANSFORMS
option READ_SHIFT requires READ_TRANSFORMS
option READ_PACK requires READ_TRANSFORMS
option READ_BGR requires READ_TRANSFORMS
option READ_SWAP requires READ_TRANSFORMS
option READ_SWAP requires READ_TRANSFORMS READ_16BIT
option READ_PACKSWAP requires READ_TRANSFORMS
option READ_INVERT requires READ_TRANSFORMS
option READ_BACKGROUND requires READ_TRANSFORMS
@ -307,6 +330,7 @@ option READ_COMPOSITE_NODIV requires READ
= NO_READ_COMPOSITE_NODIV PNG_NO_READ_COMPOSITED_NODIV
# Inch conversions
option INCH_CONVERSIONS
= INCH_CONVERSIONS PNG_INCH_CONVERSIONS
@ -314,9 +338,11 @@ option INCH_CONVERSIONS
# These are currently experimental features, define them if you want
# Very little testing, not enabled by default.
option READ_16_TO_8_ACCURATE_SCALE requires READ disabled
# WRITE options
option WRITE
option WRITE_16BIT requires WRITE enables 16BIT
@ -324,11 +350,10 @@ option WRITE_16BIT requires WRITE enables 16BIT
option WRITE_TRANSFORMS requires WRITE
= NO_WRITE_TRANSFORMS PNG_WRITE_TRANSFORMS_NOT_SUPPORTED
# ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
option WRITE_SHIFT requires WRITE_TRANSFORMS
option WRITE_PACK requires WRITE_TRANSFORMS
option WRITE_BGR requires WRITE_TRANSFORMS
option WRITE_SWAP requires WRITE_TRANSFORMS
option WRITE_SWAP requires WRITE_TRANSFORMS WRITE_16BIT
option WRITE_PACKSWAP requires WRITE_TRANSFORMS
option WRITE_INVERT requires WRITE_TRANSFORMS
option WRITE_FILLER requires WRITE_TRANSFORMS
@ -338,10 +363,12 @@ option WRITE_USER_TRANSFORM requires WRITE_TRANSFORMS
# This is not required for PNG-compliant encoders, but can cause
# trouble if left undefined
option WRITE_INTERLACING requires WRITE
# The following depends, internally, on WEIGHT_SHIFT and COST_SHIFT
# where are set below.
option WRITE_WEIGHTED_FILTER requires WRITE
option WRITE_FLUSH requires WRITE
@ -369,6 +396,7 @@ option WRITE_ANCILLARY_CHUNKS requires WRITE
= NO_WRITE_ANCILLARY_CHUNKS WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED
# These options disable *all* the text chunks if turned off
option READ_TEXT requires READ_ANCILLARY_CHUNKS enables TEXT
option WRITE_TEXT requires WRITE_ANCILLARY_CHUNKS enables TEXT
@ -385,16 +413,20 @@ option WRITE_TEXT requires WRITE_ANCILLARY_CHUNKS enables TEXT
# can't be changed by the application.
# Check the correctness of cHRM chunks
option CHECK_cHRM requires cHRM
#
# Artificially align memory - the code typically aligns to 8 byte
# boundaries if this is switched on, it's a small waste of space
# but can help (in theory) on some architectures. Only affects
# internal structures. Added at libpng 1.4.0
option ALIGN_MEMORY
# Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING
# See png[wr]util.c, normally this should always be *on*
option POINTER_INDEXING
# Other defines for things like memory and the like can go here.
@ -408,6 +440,7 @@ option POINTER_INDEXING
# This controls how fine the quantizing gets. As this allocates
# a largish chunk of memory (32K), those who are not as concerned
# with quantizing quality can decrease some or all of these.
setting QUANTIZE_RED_BITS default 5
setting QUANTIZE_GREEN_BITS default 5
setting QUANTIZE_BLUE_BITS default 5
@ -417,21 +450,25 @@ setting QUANTIZE_BLUE_BITS default 5
# results in more memory being used, and more pow() functions
# being called to fill in the gamma tables. Don't set this value
# less then 8, and even that may not work (I haven't tested it).
setting MAX_GAMMA_8 default 11
# This controls how much a difference in gamma we can tolerate before
# we actually start doing gamma conversion, it's a fixed point value,
# so the default below is 0.05, meaning libpng ignores corrections in
# the range 0.95 to 1.05
setting GAMMA_THRESHOLD_FIXED default 5000
# Scaling factor for filter heuristic weighting calculations
setting WEIGHT_SHIFT default 8
setting COST_SHIFT default 3
# Precision to use when converting a floating point value to a PNG
# extension format string in an sCAL chunk (only relevant if the
# floating point API is enabled)
setting sCAL_PRECISION default 5
# This is the size of the compression buffer, and thus the size of
@ -445,6 +482,7 @@ setting sCAL_PRECISION default 5
# this describes the size of the buffer available to read the data in.
# Unless this gets smaller than the size of a row (compressed),
# it should not make much difference how big this is.
setting ZBUF_SIZE default 8192
# Ancillary chunks
@ -469,6 +507,7 @@ chunk zTXt requires TEXT
# This only affects support of the optional PLTE chunk in RGB and RGBA
# images. Notice that READ_ANCILLARY_CHUNKS therefore disables part
# of the regular chunk reading too.
option READ_OPT_PLTE requires READ_ANCILLARY_CHUNKS
option READ_UNKNOWN_CHUNKS requires READ
@ -477,6 +516,7 @@ option READ_USER_CHUNKS requires READ enables USER_CHUNKS
option CONVERT_tIME requires WRITE_ANCILLARY_CHUNKS
# The "tm" structure is not supported on WindowsCE
@#ifdef _WIN32_WCE
@# define PNG_NO_CONVERT_tIME
@#endif
@ -488,10 +528,13 @@ option WRITE_UNKNOWN_CHUNKS requires WRITE
option HANDLE_AS_UNKNOWN
option SAVE_INT_32 requires WRITE
# png_save_int_32 is required by the ancillary chunks oFFs and pCAL
option WRITE_oFFs enables SAVE_INT_32
option WRITE_pCAL enables SAVE_INT_32
# Turn this off to disable png_read_png() and png_write_png() and
# leave the row_pointers member out of the info structure.
option INFO_IMAGE

2
scripts/pnglibconf.h.prebuilt
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@ -3,7 +3,7 @@
/* pnglibconf.h - library build configuration */
/* libpng version 1.5.0beta46 - last changed on August 26, 2010 */
/* libpng version 1.5.0beta46 - last changed on August 27, 2010 */
/* Copyright (c) 1998-2010 Glenn Randers-Pehrson */