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| author | Keith Packard <keithp@keithp.com> | 2012-10-12 13:59:50 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2012-10-12 13:59:50 -0700 |
| commit | 68308908afbd1f04b17056d2be408c89b3578c86 (patch) | |
| tree | afeb849572b1b4c22e56a9fa282de124951aa69f /src/core | |
| parent | 175380a436efa35bbfae2ee5e29e12e9ef86fbde (diff) | |
altos: Parameterize altitude table access and initialization
This allows projects to store the altitude data in different
representations or with different access modes.
By default, altitude data is stored in meters, but the initializers
include decimeter values so those can be used instead if desired.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/core')
| -rw-r--r-- | src/core/ao_convert_pa.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/core/ao_convert_pa.c b/src/core/ao_convert_pa.c index 1413681d..2793b77c 100644 --- a/src/core/ao_convert_pa.c +++ b/src/core/ao_convert_pa.c @@ -19,10 +19,18 @@ #include "ao.h" #endif -static const int32_t altitude_table[] = { +#ifndef AO_CONST_ATTRIB +#define AO_CONST_ATTRIB +#endif + +static const alt_t altitude_table[] AO_CONST_ATTRIB = { #include "altitude-pa.h" }; +#ifndef FETCH_ALT +#define FETCH_ALT(o) altitude_table[o] +#endif + #define ALT_SCALE (1 << ALT_SHIFT) #define ALT_MASK (ALT_SCALE - 1) |