diff options
Diffstat (limited to '')
| -rw-r--r-- | src/libclut.h | 74 |
1 files changed, 62 insertions, 12 deletions
diff --git a/src/libclut.h b/src/libclut.h index 4670c16..b63c5dc 100644 --- a/src/libclut.h +++ b/src/libclut.h @@ -219,6 +219,8 @@ * `red_size`, `green_size`, and `blue_size`. Ramp * structures from libgamma can be used. * @param max The maximum value on each stop in the ramps. + * This parameter is not used, it is just a dummy, to unify + * the API with the other functions. * @param type The data type used for each stop in the ramps. * @param r Whether to invert the red colour curve. * @param g Whether to invert the green colour curve. @@ -424,8 +426,6 @@ * `red_size`, `green_size`, and `blue_size`. Ramp * structures from libgamma can be used. * @param max The maximum value on each stop in the ramps. - * This parameter is not used, it is just a dummy, to unify - * the API with the other functions. * @param type The data type used for each stop in the ramps. * @param r Function to manipulate the red colour curve, should either * be `NULL` or map a [0, 1] `double` to a [0, 1] `double`. @@ -455,8 +455,6 @@ * `red_size`, `green_size`, and `blue_size`. Ramp * structures from libgamma can be used. * @param max The maximum value on each stop in the ramps. - * This parameter is not used, it is just a dummy, to unify - * the API with the other functions. * @param type The data type used for each stop in the ramps. * @param r Function to manipulate the red colour curve, should either * be `NULL` or map a [0, 1] `double` to a [0, 1] `double`. @@ -480,8 +478,6 @@ * `red_size`, `green_size`, and `blue_size`. Ramp * structures from libgamma can be used. * @param max The maximum value on each stop in the ramps. - * This parameter is not used, it is just a dummy, to unify - * the API with the other functions. * @param type The data type used for each stop in the ramps. * @param r Whether to reset the red colour curve. * @param g Whether to reset the green colour curve. @@ -528,8 +524,6 @@ * `red_size`, `green_size`, and `blue_size`. Ramp * structures from libgamma can be used. * @param max The maximum value on each stop in the ramps. - * This parameter is not used, it is just a dummy, to unify - * the API with the other functions. * @param type The data type used for each stop in the ramps. * @param r Whether to clip the red colour curve. * @param g Whether to clip the green colour curve. @@ -570,8 +564,6 @@ * `red_size`, `green_size`, and `blue_size`. Ramp * structures from libgamma can be used. * @param max The maximum value on each stop in the ramps. - * This parameter is not used, it is just a dummy, to unify - * the API with the other functions. * @param type The data type used for each stop in the ramps. * @param x The desired emulated red encoding resolution, 0 for unchanged. * @param y The desired emulated red output resolution, 0 for unchanged. @@ -603,8 +595,6 @@ * structures from libgamma can be used. * @param channel The channel, must be either "red", "green", or "blue". * @param max The maximum value on each stop in the ramps. - * This parameter is not used, it is just a dummy, to unify - * the API with the other functions. * @param type The data type used for each stop in the ramps. * @param x The desired emulated encoding resolution, 0 for unchanged. * @param y The desired emulated output resolution, 0 for unchanged. @@ -639,6 +629,66 @@ /** + * Applies a filter or calibration. + * + * None of the parameter may have side-effects. + * + * @param ramp Pointer to the gamma ramps, must have the arrays + * `red`, `green`, and `blue`, and the scalars + * `red_size`, `green_size`, and `blue_size`. Ramp + * structures from libgamma can be used. + * @param max The maximum value on each stop in the ramps. + * @param type The data type used for each stop in the ramps. + * @param filter Same as `ramp`, but for the filter to apply. + * @param fmax Same as `max`, but for the filter to apply. + * @param ftype Same as `type`, but for the filter to apply. (Not actually used). + * @param r Whether to apply the filter for the red curve. + * @param g Whether to apply the filter for the green curve. + * @param b Whether to apply the filter for the blue curve. + */ +#define libclut_apply(ramp, max, type, filter, fmax, ftype, r, g, b) + do \ + { \ + if (r) libclut_apply__(ramp, max, type, filter, fmax, ftype, red); \ + if (g) libclut_apply__(ramp, max, type, filter, fmax, ftype, green); \ + if (b) libclut_apply__(ramp, max, type, filter, fmax, ftype, blue); \ + } \ + while (0) + + +/** + * Applies a filter or calibration for one channel. + * + * None of the parameter may have side-effects. + * + * Intended for internal use. + * + * @param ramp Pointer to the gamma ramps, must have the arrays + * `red`, `green`, and `blue`, and the scalars + * `red_size`, `green_size`, and `blue_size`. Ramp + * structures from libgamma can be used. + * @param max The maximum value on each stop in the ramps. + * @param type The data type used for each stop in the ramps. + * @param filter Same as `ramp`, but for the filter to apply. + * @param fmax Same as `max`, but for the filter to apply. + * @param ftype Same as `type`, but for the filter to apply. (Not actually used). + * @param channel The channel, must be either "red", "green", or "blue". + */ +#define libclut_apply__(ramp, max, type, filter, fmax, ftype, channel) + do \ + { \ + size_t i__, rn__ = (ramp)->channel##_size, fn__ = (filter)->channel##_size; \ + size_t x__, rm__ = (double)(max), m__ = (double)(max) / (double)(fmax); \ + for (i__ = 0; i__ < rn__; i__++) \ + { \ + x__ = (size_t)((double)((ramp)->channel[i__]) / rm__ * fn__); \ + (ramp)->channel[i__] = (type)((double)((filter)->channel[x__]) * m__); \ + } \ + } \ + while (0) + + +/** * Modify a ramp. * * None of the parameter may have side-effects. |