diff options
Diffstat (limited to '')
| -rw-r--r-- | libglitter.h | 55 |
1 files changed, 48 insertions, 7 deletions
diff --git a/libglitter.h b/libglitter.h index 7263ec7..50d451d 100644 --- a/libglitter.h +++ b/libglitter.h @@ -212,27 +212,67 @@ void libglitter_split_uint32_raster(uint8_t *[3], uint8_t **, uint32_t *, uint32 * @param height The vertical number of pixels in the rasters * @param saturation The subpixel rendering saturation, 1 for regular * subpixel rendering, 0 for greyscale, values - * inbetween for a compromise + * in between for a compromise * @param primary_ys The CIE Y value (in e.g. CIE xyY or CIE XYZ) for * each subpixel colour; or `NULL` for the sRGB values * (this is only allowed if there are exactly 3 rasters) */ -void libglitter_desaturate_double(double **, size_t, size_t, size_t, size_t, size_t, double, const double *); +void libglitter_desaturate_double(double **, size_t, size_t, size_t, size_t, size_t, double, const double *restrict); /** * This value is identical to `libglitter_desaturate_double`, * apart from it parameter types, see `libglitter_desaturate_double` * for details about this function */ -void libglitter_desaturate_float(float **, size_t, size_t, size_t, size_t, size_t, float, const float *); +void libglitter_desaturate_float(float **, size_t, size_t, size_t, size_t, size_t, float, const float *restrict); + +/** + * Transform rasters from fully using subpixel rendering to + * balance between subpixel rendering and greyscale antialiasing + * + * @param rasters Array of rasters, one for each subpixel colour. + * The function may change the offset for each raster, + * as such, the given pointer shall not be used anywhere + * else during the execution of the function and the + * inner pointers shall be considered undefined after + * the execution of the function + * @param nrasters The number of rasters + * @param rowsize The number of cells in a row in each raster + * @param cellsize The number of values stored in each raster, + * between each cell, plus 1 (that is, the number of + * values per cell) + * @param width The horizontal number of pixels in the rasters + * @param height The vertical number of pixels in the rasters + * @param saturations The subpixel rendering saturation for each raster, + * 1 for regular subpixel rendering, 0 for greyscale, + * values in between for a compromise + * @param primary_ys The CIE Y value (in e.g. CIE xyY or CIE XYZ) for + * each subpixel colour; or `NULL` for the sRGB values + * (this is only allowed if there are exactly 3 rasters) + */ +void libglitter_per_channel_desaturate_double(double **, size_t, size_t, size_t, size_t, size_t, + const double *restrict, const double *restrict); + +/** + * This value is identical to `libglitter_per_channel_desaturate_double`, + * apart from it parameter types, see `libglitter_per_channel_desaturate_double` + * for details about this function + */ +void libglitter_per_channel_desaturate_float(float **, size_t, size_t, size_t, size_t, size_t, + const float *restrict, const float *restrict); /** * Get the matrix each pixel shall be multiplied with * to convert it from the output's colour space to sRGB + * or CIE XYZ * - * This is useful when the output does not use sRGB, - * but the application does + * This is useful when the output does not use sRGB, or + * CIE XYZ, but the application does. If the application + * uses some other colour space, this function can output + * the conversion matrix for the CIE XYZ colour space, + * which can that be right-hand multiplied to get the + * conversion matrix for some other colour * * @param matrix Output buffer for the conversion matrix * @param c1x The CIE x value (as in CIE xyY) of the output's first primary colour @@ -244,13 +284,14 @@ void libglitter_desaturate_float(float **, size_t, size_t, size_t, size_t, size_ * @param white_x The CIE x value (as in CIE xyY) of the output's white point * @param white_y The CIE y value (as in CIE xyY) of the output's white point * @param white_Y The CIE Y value (as in CIE xyY) of the output's white point, normally 1 + * @param xyz Whether the output conversion matrix should be to CIE XYZ rather the sRGB * * `LIBGLITTER_ILLUMINANT_D65` can be input in place of * `white_x, white_y, white_Y` (it expands to three arguments) * if the output's whitepoint is the D65 illuminant */ void libglitter_get_colour_space_conversion_matrix_double(double[3][3], double, double, double, double, - double, double, double, double, double); + double, double, double, double, double, int); /** * This value is identical to `libglitter_get_colour_space_conversion_matrix_double`, @@ -258,7 +299,7 @@ void libglitter_get_colour_space_conversion_matrix_double(double[3][3], double, * for details about this function */ void libglitter_get_colour_space_conversion_matrix_float(float[3][3], float, float, float, float, - float, float, float, float, float); + float, float, float, float, float, int); #endif |