| /* vim: set ts=8 sw=8 noexpandtab: */ |
| // qcms |
| // Copyright (C) 2009 Mozilla Foundation |
| // Copyright (C) 1998-2007 Marti Maria |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining |
| // a copy of this software and associated documentation files (the "Software"), |
| // to deal in the Software without restriction, including without limitation |
| // the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| // and/or sell copies of the Software, and to permit persons to whom the Software |
| // is furnished to do so, subject to the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included in |
| // all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO |
| // THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| |
| #ifndef _QCMS_TRANSFORM_UTIL_H |
| #define _QCMS_TRANSFORM_UTIL_H |
| |
| #include <stdlib.h> |
| |
| #define CLU(table,x,y,z) table[(x*len + y*x_len + z*xy_len)*3] |
| |
| //XXX: could use a bettername |
| typedef uint16_t uint16_fract_t; |
| |
| float lut_interp_linear(double input_value, uint16_t *table, size_t length); |
| float lut_interp_linear_float(float input_value, float *table, size_t length); |
| uint16_t lut_interp_linear16(uint16_t input_value, uint16_t *table, size_t length); |
| |
| |
| static inline float lerp(float a, float b, float t) |
| { |
| return a*(1.f-t) + b*t; |
| } |
| |
| unsigned char clamp_u8(float v); |
| float clamp_float(float a); |
| |
| float u8Fixed8Number_to_float(uint16_t x); |
| |
| |
| float *build_input_gamma_table(struct curveType *TRC); |
| struct matrix build_colorant_matrix(qcms_profile *p); |
| void build_output_lut(struct curveType *trc, |
| uint16_t **output_gamma_lut, size_t *output_gamma_lut_length); |
| |
| struct matrix matrix_invert(struct matrix mat); |
| qcms_bool compute_precache(struct curveType *trc, uint8_t *output); |
| |
| #endif |