diff options
Diffstat (limited to 'src/lib/gamma-helper.c')
| -rw-r--r-- | src/lib/gamma-helper.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/lib/gamma-helper.c b/src/lib/gamma-helper.c index 11dfa13..e5f5a25 100644 --- a/src/lib/gamma-helper.c +++ b/src/lib/gamma-helper.c @@ -106,8 +106,8 @@ static void translate_from_64(signed depth, size_t n, libgamma_gamma_ramps_any_t static int allocated_any_ramp(libgamma_gamma_ramps_any_t* restrict ramps_sys, libgamma_gamma_ramps_any_t ramps, signed depth, size_t* restrict elements) { + /* Calculate the size of the allocation to do. */ size_t d, n = ramps.ANY.red_size + ramps.ANY.green_size + ramps.ANY.blue_size; - switch (depth) { case 16: d = sizeof(uint16_t); break; @@ -119,12 +119,16 @@ static int allocated_any_ramp(libgamma_gamma_ramps_any_t* restrict ramps_sys, return errno = EINVAL, LIBGAMMA_ERRNO_SET; } + /* Copy the gamma ramp sizes. */ ramps_sys->ANY = ramps.ANY; + /* Allocate the new ramps. */ ramps_sys->ANY.red = malloc(n * d); ramps_sys->ANY.green = (void*)(((char*)(ramps_sys->ANY. red)) + ramps.ANY. red_size * d / sizeof(char)); ramps_sys->ANY.blue = (void*)(((char*)(ramps_sys->ANY.green)) + ramps.ANY.green_size * d / sizeof(char)); + /* Report the total gamma ramp size. */ *elements = n; + /* Report successfulness. */ return ramps_sys->ANY.red == NULL ? LIBGAMMA_ERRNO_SET : 0; } @@ -154,18 +158,23 @@ int libgamma_translated_ramp_get_(libgamma_crtc_state_t* restrict this, libgamma_gamma_ramps_any_t ramps_sys; uint64_t* restrict ramps_full; + /* Allocate ramps with proper data type. */ if ((r = allocated_any_ramp(&ramps_sys, *ramps, depth_system, &n))) return r; + /* Fill the ramps. */ if ((r = fun(this, &ramps_sys))) return free(ramps_sys.ANY.red), r; + /* Allocate intermediary ramps. */ if ((ramps_full = malloc(n * sizeof(uint64_t))) == NULL) return free(ramps_sys.ANY.red), LIBGAMMA_ERRNO_SET; + /* Translate ramps to 64-bit integers. */ translate_to_64(depth_system, n, ramps_full, ramps_sys); free(ramps_sys.ANY.red); + /* Translate ramps to the user's format. */ translate_from_64(depth_user, n, *ramps, ramps_full); free(ramps_full); return 0; @@ -197,16 +206,21 @@ int libgamma_translated_ramp_set_(libgamma_crtc_state_t* restrict this, libgamma_gamma_ramps_any_t ramps_sys; uint64_t* restrict ramps_full; + /* Allocate ramps with proper data type. */ if ((r = allocated_any_ramp(&ramps_sys, ramps, depth_system, &n))) return r; + /* Allocate intermediary ramps. */ if ((ramps_full = malloc(n * sizeof(uint64_t))) == NULL) return free(ramps_sys.ANY.red), LIBGAMMA_ERRNO_SET; + /* Translate ramps to 64-bit integers. */ translate_to_64(depth_user, n, ramps_full, ramps); + /* Translate ramps to the proper format. */ translate_from_64(depth_system, n, ramps_sys, ramps_full); free(ramps_full); + /* Apply the ramps */ r = fun(this, ramps_sys); free(ramps_sys.ANY.red); |