diff options
Diffstat (limited to 'src/util.c')
| -rw-r--r-- | src/util.c | 51 |
1 files changed, 51 insertions, 0 deletions
@@ -17,6 +17,8 @@ */ #include "util.h" +#include <libclut.h> + #include <sys/stat.h> #include <errno.h> #include <stdlib.h> @@ -265,3 +267,52 @@ int verify_utf8(const char* restrict string, int allow_modified_nul) return read_bytes == 0 ? 0 : -1; } + +/** + * Make identity mapping ramps + * + * @param ramps Output parameter for the ramps + * @param output The output for which the ramps shall be configured + * @return Zero on success, -1 on error + */ +int make_plain_ramps(union gamma_ramps* restrict ramps, struct output* restrict output) +{ + COPY_RAMP_SIZES(&(ramps->u8), output); + switch (output->depth) + { + case 8: + if (libgamma_gamma_ramps8_initialise(&(ramps->u8))) + return -1; + libclut_start_over(&(ramps->u8), UINT8_MAX, uint8_t, 1, 1, 1); + break; + case 16: + if (libgamma_gamma_ramps16_initialise(&(ramps->u16))) + return -1; + libclut_start_over(&(ramps->u16), UINT16_MAX, uint16_t, 1, 1, 1); + break; + case 32: + if (libgamma_gamma_ramps32_initialise(&(ramps->u32))) + return -1; + libclut_start_over(&(ramps->u32), UINT32_MAX, uint32_t, 1, 1, 1); + break; + case 64: + if (libgamma_gamma_ramps64_initialise(&(ramps->u64))) + return -1; + libclut_start_over(&(ramps->u64), UINT64_MAX, uint64_t, 1, 1, 1); + break; + case -1: + if (libgamma_gamma_rampsf_initialise(&(ramps->f))) + return -1; + libclut_start_over(&(ramps->f), 1.0f, float, 1, 1, 1); + break; + case -2: + if (libgamma_gamma_rampsd_initialise(&(ramps->d))) + return -1; + libclut_start_over(&(ramps->d), (double)1, double, 1, 1, 1); + break; + default: + abort(); + } + return 0; +} + |