diff options
Diffstat (limited to 'scripts/pnglibconf.dfa')
| -rw-r--r-- | scripts/pnglibconf.dfa | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/scripts/pnglibconf.dfa b/scripts/pnglibconf.dfa index bf1ed8a16..cd3b3c6d1 100644 --- a/scripts/pnglibconf.dfa +++ b/scripts/pnglibconf.dfa @@ -27,7 +27,7 @@ file pnglibconf.h scripts/pnglibconf.dfa PNGLCONF_H # The syntax is detailed in scripts/options.awk; this is a summary # only: # -# setting <name> [default] +# setting <name> [requires ...] [default] # #define PNG_<name> <value> /* value comes from current setting */ # option <name> [requires ...] [if ...] [enables ...] [disabled] # #define PNG_<name>_SUPPORTED if the requirements are met and @@ -165,6 +165,12 @@ logunsupported = 1 @# endif @#endif +# This changes the default for the ARM NEON optimizations according to +# __ARM_NEON__ +@#ifdef __ARM_NEON__ +@# define PNG_ARM_NEON_SUPPORTED +@#endif + # IN DEVELOPMENT # These are currently experimental features; define them if you want (NOTE: # experimental options must be disabled before they are defined in this file!) @@ -222,11 +228,22 @@ setting ZLIB_HEADER default <zlib.h> setting FILTER_OPTIMIZATIONS -# This option turns on runtime checks for ARM NEON support, it is irrelevant -# on other platforms and it is irrelevant unless NEON code is turned on. Checks -# are on by default - -option ARM_NEON_CHECK +# Implementation specific control of the optimizations, enabled by those +# hardware or software options that need it (typically when run-time choices +# must be made by the user) +option SET_OPTION disabled + +# These options are specific to the ARM NEON hardware optimizations: +# +# ARM_NEON: the optimization itself +# ARM_NEON_API: allow the optimization to be switched on with png_set_hardware +# ARM_NEON_CHECK: compile a run-time check to see if Neon extensions are +# supported, this is poorly supported and deprectated - use the +# png_set_hardware API. +option ARM_NEON disabled, + sets FILTER_OPTIMIZATIONS png_init_filter_functions_neon +option ARM_NEON_API disabled enables SET_OPTION ARM_NEON +option ARM_NEON_CHECK disabled enables ARM_NEON # These settings configure the default compression level (0-9) and 'strategy'; # strategy is as defined by the implementors of zlib, it describes the input |