/* vim: set ts=8 sw=8 noexpandtab: */
// qcms
// Copyright (C) 2009 Mozilla Corporation
// 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.
#include <stdlib.h>
#include <math.h>
#include <assert.h>
#include <string.h> //memcpy
#include "qcmsint.h"
#include "transform_util.h"
#include "matrix.h"
static struct matrix build_lut_matrix(struct lutType *lut)
{
struct matrix result;
if (lut) {
result.m[0][0] = s15Fixed16Number_to_float(lut->e00);
result.m[0][1] = s15Fixed16Number_to_float(lut->e01);
result.m[0][2] = s15Fixed16Number_to_float(lut->e02);
result.m[1][0] = s15Fixed16Number_to_float(lut->e10);
result.m[1][1] = s15Fixed16Number_to_float(lut->e11);
result.m[1][2] = s15Fixed16Number_to_float(lut->e12);
result.m[2][0] = s15Fixed16Number_to_float(lut->e20);
result.m[2][1] = s15Fixed16Number_to_float(lut->e21);
result.m[2][2] = s15Fixed16Number_to_float(lut->e22);
result.invalid = false;
} else {
memset(&result, 0, sizeof(struct matrix));
result.invalid = true;
}
return result;
}
static struct matrix build_mAB_matrix(struct lutmABType *lut)
{
struct matrix result;
if (lut) {
result.m[0][0] = s15Fixed16Number_to_float(lut->e00);
result.m[0][1] = s15Fixed16Number_to_float(lut->e01);
result.m[0][2] = s15Fixed16Number_to_float(lut->e02);
result.m[1][0] = s15Fixed16Number_to_float(lut->e10);
result.m[1][1] = s15Fixed16Number_to_float(lut->e11);
result.m[1][2] = s15Fixed16Number_to_float(lut->e12);
result.m[2][0] = s15Fixed16Number_to_float(lut->e20);
result.m[2][1] = s15Fixed16Number_to_float(lut->e21);
result.m[2][2] = s15Fixed16Number_to_float(lut->e22);
result.invalid = false;
} else {
memset(&result, 0, sizeof(struct matrix));
result.invalid = true;
}
return result;
}
//Based on lcms cmsLab2XYZ
#define f(t) (t <= (24.0f/116.0f)*(24.0f/116.0f)*(24.0f/116.0f)) ? ((841.0/108.0) * t + (16.0/116.0)) : pow(t,1.0/3.0)
#define f_1(t) (t <= (24.0f/116.0f)) ? ((108.0/841.0) * (t - (16.0/116.0))) : (t * t * t)
static void qcms_transform_module_LAB_to_XYZ(struct qcms_modular_transform *transform, float *src, float *dest, size_t length)
{
size_t i;
// lcms: D50 XYZ values
float WhitePointX = 0.9642f;
float WhitePointY = 1.0f;
float WhitePointZ = 0.8249f;
for (i = 0; i < length; i++) {
float device_L = *src++ * 100.0f;
float device_a = *src++ * 255.0f - 128.0f;
float device_b = *src++ * 255.0f - 128.0f;
float y = (device_L + 16.0f) / 116.0f;
float X = f_1((y + 0.002f * device_a)) * WhitePointX;
float Y = f_1(y) * WhitePointY;
float Z = f_1((y - 0.005f * device_b)) * WhitePointZ;
*dest++ = X / (1.0 + 32767.0/32768.0);
*dest++ = Y / (1.0 + 32767.0/32768.0);
*dest++ = Z / (1.0 + 32767.0/32768.0);
}
}
//Based on lcms cmsXYZ2Lab
static void qcms_transform_module_XYZ_to_LAB(struct qcms_modular_transform *transform, float *src, float *dest, size_t length)
{
size_t i;
// lcms: D50 XYZ values
float WhitePointX = 0.9642f;
float WhitePointY = 1.0f;
float WhitePointZ = 0.8249f;
for (i = 0; i < length; i++) {
float device_x = *src++ * (1.0 + 32767.0/32768.0) / WhitePointX;
float device_y = *src++ * (1.0 + 32767.0/32768.0) / WhitePointY;
float device_z = *src++ * (1.0 + 32767.0/32768.0) / WhitePointZ;
float fx = f(device_x);
float fy = f(device_y);
float fz = f(device_z);
float L = 116.0f*fy - 16.0f;
float a = 500.0f*(fx - fy);
float b = 200.0f*(fy - fz);
*dest++ = L / 100.0f;
*dest++ = (a+128.0f) / 255.0f;
*dest++ = (b+128.0f) / 255.0f;
}
}
static void qcms_transform_module_clut_only(struct qcms_modular_transform *transform, float *src, float *dest, size_t length)
{
size_t i;
int xy_len = 1;
int x_len = transform->grid_size;
int len = x_len * x_len;
float* r_table = transform->r_clut;
float* g_table = transform->g_clut;
float* b_table = transform->b_clut;
for (i = 0; i < length; i++) {
assert(transform->grid_size >= 1);
float linear_r = *src++;
float linear_g = *src++;
float linear_b = *src++;
int x = floorf(linear_r * (transform->grid_size-1));
int y = floorf(linear_g * (transform->grid_size-1));
int z = floorf(linear_b * (transform->grid_size-1));
int x_n = ceilf(linear_r * (transform->grid_size-1));
int y_n = ceilf(linear_g * (transform->grid_size-1));
int z_n = ceilf(linear_b * (transform->grid_size-1));
float x_d = linear_r * (transform->grid_size-1) - x;
float y_d = linear_g * (transform->grid_size-1) - y;
float z_d = linear_b * (transform->grid_size-1) - z;
float r_x1 = lerp(CLU(r_table,x,y,z), CLU(r_table,x_n,y,z), x_d);
float r_x2 = lerp(CLU(r_table,x,y_n,z), CLU(r_table,x_n,y_n,z), x_d);
float r_y1 = lerp(r_x1, r_x2, y_d);
float r_x3 = lerp(CLU(r_table,x,y,z_n), CLU(r_table,x_n,y,z_n), x_d);
float r_x4 = lerp(CLU(r_table,x,y_n,z_n), CLU(r_table,x_n,y_n,z_n), x_d);
float r_y2 = lerp(r_x3, r_x4, y_d);
float clut_r = lerp(r_y1, r_y2, z_d);
float g_x1 = lerp(CLU(g_table,x,y,z), CLU(g_table,x_n,y,z), x_d);
float g_x2 = lerp(CLU(g_table,x,y_n,z), CLU(g_table,x_n,y_n,z), x_d);
float g_y1 = lerp(g_x1, g_x2, y_d);
float g_x3 = lerp(CLU(g_table,x,y,z_n), CLU(g_table,x_n,y,z_n), x_d);
float g_x4 = lerp(CLU(g_table,x,y_n,z_n), CLU(g_table,x_n,y_n,z_n), x_d);
float g_y2 = lerp(g_x3, g_x4, y_d);
float clut_g = lerp(g_y1, g_y2, z_d);
float b_x1 = lerp(CLU(b_table,x,y,z), CLU(b_table,x_n,y,z), x_d);
float b_x2 = lerp(CLU(b_table,x,y_n,z), CLU(b_table,x_n,y_n,z), x_d);
float b_y1 = lerp(b_x1, b_x2, y_d);
float b_x3 = lerp(CLU(b_table,x,y,z_n), CLU(b_table,x_n,y,z_n), x_d);
float b_x4 = lerp(CLU(b_table,x,y_n,z_n), CLU(b_table,x_n,y_n,z_n), x_d);
float b_y2 = lerp(b_x3, b_x4, y_d);
float clut_b = lerp(b_y1, b_y2, z_d);
*dest++ = clamp_float(clut_r);
*dest++ = clamp_float(clut_g);
*dest++ = clamp_float(clut_b);
}
}
static void qcms_transform_module_clut(struct qcms_modular_transform *transform, float *src, float *dest, size_t length)
{
size_t i;
int xy_len = 1;
int x_len = transform->grid_size;
int len = x_len * x_len;
float* r_table = transform->r_clut;
float* g_table = transform->g_clut;
float* b_table = transform->b_clut;
for (i = 0; i < length; i++) {
assert(transform->grid_size >= 1);
float device_r = *src++;
float device_g = *src++;
float device_b = *src++;
float linear_r = lut_interp_linear_float(device_r,
transform->input_clut_table_r, transform->input_clut_table_length);
float linear_g = lut_interp_linear_float(device_g,
transform->input_clut_table_g, transform->input_clut_table_length);
float linear_b = lut_interp_linear_float(device_b,
transform->input_clut_table_b, transform->input_clut_table_length);
int x = floorf(linear_r * (transform->grid_size-1));
int y = floorf(linear_g * (transform->grid_size-1));
int z = floorf(linear_b * (transform->grid_size-1));
int x_n = ceilf(linear_r * (transform->grid_size-1));
int y_n = ceilf(linear_g * (transform->grid_size-1));
int z_n = ceilf(linear_b * (transform->grid_size-1));
float x_d = linear_r * (transform->grid_size-1) - x;
float y_d = linear_g * (transform->grid_size-1) - y;
float z_d = linear_b * (transform->grid_size-1) - z;
float r_x1 = lerp(CLU(r_table,x,y,z), CLU(r_table,x_n,y,z), x_d);
float r_x2 = lerp(CLU(r_table,x,y_n,z), CLU(r_table,x_n,y_n,z), x_d);
float r_y1 = lerp(r_x1, r_x2, y_d);
float r_x3 = lerp(CLU(r_table,x,y,z_n), CLU(r_table,x_n,y,z_n), x_d);
float r_x4 = lerp(CLU(r_table,x,y_n,z_n), CLU(r_table,x_n,y_n,z_n), x_d);
float r_y2 = lerp(r_x3, r_x4, y_d);
float clut_r = lerp(r_y1, r_y2, z_d);
float g_x1 = lerp(CLU(g_table,x,y,z), CLU(g_table,x_n,y,z), x_d);
float g_x2 = lerp(CLU(g_table,x,y_n,z), CLU(g_table,x_n,y_n,z), x_d);
float g_y1 = lerp(g_x1, g_x2, y_d);
float g_x3 = lerp(CLU(g_table,x,y,z_n), CLU(g_table,x_n,y,z_n), x_d);
float g_x4 = lerp(CLU(g_table,x,y_n,z_n), CLU(g_table,x_n,y_n,z_n), x_d);
float g_y2 = lerp(g_x3, g_x4, y_d);
float clut_g = lerp(g_y1, g_y2, z_d);
float b_x1 = lerp(CLU(b_table,x,y,z), CLU(b_table,x_n,y,z), x_d);
float b_x2 = lerp(CLU(b_table,x,y_n,z), CLU(b_table,x_n,y_n,z), x_d);
float b_y1 = lerp(b_x1, b_x2, y_d);
float b_x3 = lerp(CLU(b_table,x,y,z_n), CLU(b_table,x_n,y,z_n), x_d);
float b_x4 = lerp(CLU(b_table,x,y_n,z_n), CLU(b_table,x_n,y_n,z_n), x_d);
float b_y2 = lerp(b_x3, b_x4, y_d);
float clut_b = lerp(b_y1, b_y2, z_d);
float pcs_r = lut_interp_linear_float(clut_r,
transform->output_clut_table_r, transform->output_clut_table_length);
float pcs_g = lut_interp_linear_float(clut_g,
transform->output_clut_table_g, transform->output_clut_table_length);
float pcs_b = lut_interp_linear_float(clut_b,
transform->output_clut_table_b, transform->output_clut_table_length);
*dest++ = clamp_float(pcs_r);
*dest++ = clamp_float(pcs_g);
*dest++ = clamp_float(pcs_b);
}
}
/* NOT USED
static void qcms_transform_module_tetra_clut(struct qcms_modular_transform *transform, float *src, float *dest, size_t length)
{
size_t i;
int xy_len = 1;
int x_len = transform->grid_size;
int len = x_len * x_len;
float* r_table = transform->r_clut;
float* g_table = transform->g_clut;
float* b_table = transform->b_clut;
float c0_r, c1_r, c2_r, c3_r;
float c0_g, c1_g, c2_g, c3_g;
float c0_b, c1_b, c2_b, c3_b;
float clut_r, clut_g, clut_b;
float pcs_r, pcs_g, pcs_b;
for (i = 0; i < length; i++) {
float device_r = *src++;
float device_g = *src++;
float device_b = *src++;
float linear_r = lut_interp_linear_float(device_r,
transform->input_clut_table_r, transform->input_clut_table_length);
float linear_g = lut_interp_linear_float(device_g,
transform->input_clut_table_g, transform->input_clut_table_length);
float linear_b = lut_interp_linear_float(device_b,
transform->input_clut_table_b, transform->input_clut_table_length);
int x = floorf(linear_r * (transform->grid_size-1));
int y = floorf(linear_g * (transform->grid_size-1));
int z = floorf(linear_b * (transform->grid_size-1));
int x_n = ceilf(linear_r * (transform->grid_size-1));
int y_n = ceilf(linear_g * (transform->grid_size-1));
int z_n = ceilf(linear_b * (transform->grid_size-1));
float rx = linear_r * (transform->grid_size-1) - x;
float ry = linear_g * (transform->grid_size-1) - y;
float rz = linear_b * (transform->grid_size-1) - z;
c0_r = CLU(r_table, x, y, z);
c0_g = CLU(g_table, x, y, z);
c0_b = CLU(b_table, x, y, z);
if( rx >= ry ) {
if (ry >= rz) { //rx >= ry && ry >= rz
c1_r = CLU(r_table, x_n, y, z) - c0_r;
c2_r = CLU(r_table, x_n, y_n, z) - CLU(r_table, x_n, y, z);
c3_r = CLU(r_table, x_n, y_n, z_n) - CLU(r_table, x_n, y_n, z);
c1_g = CLU(g_table, x_n, y, z) - c0_g;
c2_g = CLU(g_table, x_n, y_n, z) - CLU(g_table, x_n, y, z);
c3_g = CLU(g_table, x_n, y_n, z_n) - CLU(g_table, x_n, y_n, z);
c1_b = CLU(b_table, x_n, y, z) - c0_b;
c2_b = CLU(b_table, x_n, y_n, z) - CLU(b_table, x_n, y, z);
c3_b = CLU(b_table, x_n, y_n, z_n) - CLU(b_table, x_n, y_n, z);
} else {
if (rx >= rz) { //rx >= rz && rz >= ry
c1_r = CLU(r_table, x_n, y, z) - c0_r;
c2_r = CLU(r_table, x_n, y_n, z_n) - CLU(r_table, x_n, y, z_n);
c3_r = CLU(r_table, x_n, y, z_n) - CLU(r_table, x_n, y, z);
c1_g = CLU(g_table, x_n, y, z) - c0_g;
c2_g = CLU(g_table, x_n, y_n, z_n) - CLU(g_table, x_n, y, z_n);
c3_g = CLU(g_table, x_n, y, z_n) - CLU(g_table, x_n, y, z);
c1_b = CLU(b_table, x_n, y, z) - c0_b;
c2_b = CLU(b_table, x_n, y_n, z_n) - CLU(b_table, x_n, y, z_n);
c3_b = CLU(b_table, x_n, y, z_n) - CLU(b_table, x_n, y, z);
} else { //rz > rx && rx >= ry
c1_r = CLU(r_table, x_n, y, z_n) - CLU(r_table, x, y, z_n);
c2_r = CLU(r_table, x_n, y_n, z_n) - CLU(r_table, x_n, y, z_n);
c3_r = CLU(r_table, x, y, z_n) - c0_r;
c1_g = CLU(g_table, x_n, y, z_n) - CLU(g_table, x, y, z_n);
c2_g = CLU(g_table, x_n, y_n, z_n) - CLU(g_table, x_n, y, z_n);
c3_g = CLU(g_table, x, y, z_n) - c0_g;
c1_b = CLU(b_table, x_n, y, z_n) - CLU(b_table, x, y, z_n);
c2_b = CLU(b_table, x_n, y_n, z_n) - CLU(b_table, x_n, y, z_n);
c3_b = CLU(b_table, x, y, z_n) - c0_b;
}
}
} else {
if (rx >= rz) { //ry > rx && rx >= rz
c1_r = CLU(r_table, x_n, y_n, z) - CLU(r_table, x, y_n, z);
c2_r = CLU(r_table, x_n, y_n, z) - c0_r;
c3_r = CLU(r_table, x_n, y_n, z_n) - CLU(r_table, x_n, y_n, z);
c1_g = CLU(g_table, x_n, y_n, z) - CLU(g_table, x, y_n, z);
c2_g = CLU(g_table, x_n, y_n, z) - c0_g;
c3_g = CLU(g_table, x_n, y_n, z_n) - CLU(g_table, x_n, y_n, z);
c1_b = CLU(b_table, x_n, y_n, z) - CLU(b_table, x, y_n, z);
c2_b = CLU(b_table, x_n, y_n, z) - c0_b;
c3_b = CLU(b_table, x_n, y_n, z_n) - CLU(b_table, x_n, y_n, z);
} else {
if (ry >= rz) { //ry >= rz && rz > rx
c1_r = CLU(r_table, x_n, y_n, z_n) - CLU(r_table, x, y_n, z_n);
c2_r = CLU(r_table, x, y_n, z) - c0_r;
c3_r = CLU(r_table, x, y_n, z_n) - CLU(r_table, x, y_n, z);
c1_g = CLU(g_table, x_n, y_n, z_n) - CLU(g_table, x, y_n, z_n);
c2_g = CLU(g_table, x, y_n, z) - c0_g;
c3_g = CLU(g_table, x, y_n, z_n) - CLU(g_table, x, y_n, z);
c1_b = CLU(b_table, x_n, y_n, z_n) - CLU(b_table, x, y_n, z_n);
c2_b = CLU(b_table, x, y_n, z) - c0_b;
c3_b = CLU(b_table, x, y_n, z_n) - CLU(b_table, x, y_n, z);
} else { //rz > ry && ry > rx
c1_r = CLU(r_table, x_n, y_n, z_n) - CLU(r_table, x, y_n, z_n);
c2_r = CLU(r_table, x, y_n, z) - c0_r;
c3_r = CLU(r_table, x_n, y_n, z_n) - CLU(r_table, x_n, y_n, z);
c1_g = CLU(g_table, x_n, y_n, z_n) - CLU(g_table, x, y_n, z_n);
c2_g = CLU(g_table, x, y_n, z) - c0_g;
c3_g = CLU(g_table, x_n, y_n, z_n) - CLU(g_table, x_n, y_n, z);
c1_b = CLU(b_table, x_n, y_n, z_n) - CLU(b_table, x, y_n, z_n);
c2_b = CLU(b_table, x, y_n, z) - c0_b;
c3_b = CLU(b_table, x_n, y_n, z_n) - CLU(b_table, x_n, y_n, z);
}
}
}
clut_r = c0_r + c1_r*rx + c2_r*ry + c3_r*rz;
clut_g = c0_g + c1_g*rx + c2_g*ry + c3_g*rz;
clut_b = c0_b + c1_b*rx + c2_b*ry + c3_b*rz;
pcs_r = lut_interp_linear_float(clut_r,
transform->output_clut_table_r, transform->output_clut_table_length);
pcs_g = lut_interp_linear_float(clut_g,
transform->output_clut_table_g, transform->output_clut_table_length);
pcs_b = lut_interp_linear_float(clut_b,
transform->output_clut_table_b, transform->output_clut_table_length);
*dest++ = clamp_float(pcs_r);
*dest++ = clamp_float(pcs_g);
*dest++ = clamp_float(pcs_b);
}
}
*/
static void qcms_transform_module_gamma_table(struct qcms_modular_transform *transform, float *src, float *dest, size_t length)
{
size_t i;
float out_r, out_g, out_b;
for (i = 0; i < length; i++) {
float in_r = *src++;
float in_g = *src++;
float in_b = *src++;
out_r = lut_interp_linear_float(in_r, transform->input_clut_table_r, 256);
out_g = lut_interp_linear_float(in_g, transform->input_clut_table_g, 256);
out_b = lut_interp_linear_float(in_b, transform->input_clut_table_b, 256);
*dest++ = clamp_float(out_r);
*dest++ = clamp_float(out_g);
*dest++ = clamp_float(out_b);
}
}
static void qcms_transform_module_gamma_lut(struct qcms_modular_transform *transform, float *src, float *dest, size_t length)
{
size_t i;
float out_r, out_g, out_b;
for (i = 0; i < length; i++) {
float in_r = *src++;
float in_g = *src++;
float in_b = *src++;
out_r = lut_interp_linear(in_r,
transform->output_gamma_lut_r, transform->output_gamma_lut_r_length);
out_g = lut_interp_linear(in_g,
transform->output_gamma_lut_g, transform->output_gamma_lut_g_length);
out_b = lut_interp_linear(in_b,
transform->output_gamma_lut_b, transform->output_gamma_lut_b_length);
*dest++ = clamp_float(out_r);
*dest++ = clamp_float(out_g);
*dest++ = clamp_float(out_b);
}
}
static void qcms_transform_module_matrix_translate(struct qcms_modular_transform *transform, float *src, float *dest, size_t length)
{
size_t i;
struct matrix mat;
/* store the results in column major mode
* this makes doing the multiplication with sse easier */
mat.m[0][0] = transform->matrix.m[0][0];
mat.m[1][0] = transform->matrix.m[0][1];
mat.m[2][0] = transform->matrix.m[0][2];
mat.m[0][1] = transform->matrix.m[1][0];
mat.m[1][1] = transform->matrix.m[1][1];
mat.m[2][1] = transform->matrix.m[1][2];
mat.m[0][2] = transform->matrix.m[2][0];
mat.m[1][2] = transform->matrix.m[2][1];
mat.m[2][2] = transform->matrix.m[2][2];
for (i = 0; i < length; i++) {
float in_r = *src++;
float in_g = *src++;
float in_b = *src++;
float out_r = mat.m[0][0]*in_r + mat.m[1][0]*in_g + mat.m[2][0]*in_b + transform->tx;
float out_g = mat.m[0][1]*in_r + mat.m[1][1]*in_g + mat.m[2][1]*in_b + transform->ty;
float out_b = mat.m[0][2]*in_r + mat.m[1][2]*in_g + mat.m[2][2]*in_b + transform->tz;
*dest++ = clamp_float(out_r);
*dest++ = clamp_float(out_g);
*dest++ = clamp_float(out_b);
}
}
static void qcms_transform_module_matrix(struct qcms_modular_transform *transform, float *src, float *dest, size_t length)
{
size_t i;
struct matrix mat;
/* store the results in column major mode
* this makes doing the multiplication with sse easier */
mat.m[0][0] = transform->matrix.m[0][0];
mat.m[1][0] = transform->matrix.m[0][1];
mat.m[2][0] = transform->matrix.m[0][2];
mat.m[0][1] = transform->matrix.m[1][0];
mat.m[1][1] = transform->matrix.m[1][1];
mat.m[2][1] = transform->matrix.m[1][2];
mat.m[0][2] = transform->matrix.m[2][0];
mat.m[1][2] = transform->matrix.m[2][1];
mat.m[2][2] = transform->matrix.m[2][2];
for (i = 0; i < length; i++) {
float in_r = *src++;
float in_g = *src++;
float in_b = *src++;
float out_r = mat.m[0][0]*in_r + mat.m[1][0]*in_g + mat.m[2][0]*in_b;
float out_g = mat.m[0][1]*in_r + mat.m[1][1]*in_g + mat.m[2][1]*in_b;
float out_b = mat.m[0][2]*in_r + mat.m[1][2]*in_g + mat.m[2][2]*in_b;
*dest++ = clamp_float(out_r);
*dest++ = clamp_float(out_g);
*dest++ = clamp_float(out_b);
}
}
static struct qcms_modular_transform* qcms_modular_transform_alloc() {
return calloc(1, sizeof(struct qcms_modular_transform));
}
static void qcms_modular_transform_release(struct qcms_modular_transform *transform)
{
struct qcms_modular_transform *next_transform;
while (transform != NULL) {
next_transform = transform->next_transform;
// clut may use a single block of memory.
// Perhaps we should remove this to simply the code.
if (transform->input_clut_table_r + transform->input_clut_table_length == transform->input_clut_table_g && transform->input_clut_table_g + transform->input_clut_table_length == transform->input_clut_table_b) {
if (transform->input_clut_table_r) free(transform->input_clut_table_r);
} else {
if (transform->input_clut_table_r) free(transform->input_clut_table_r);
if (transform->input_clut_table_g) free(transform->input_clut_table_g);
if (transform->input_clut_table_b) free(transform->input_clut_table_b);
}
if (transform->r_clut + 1 == transform->g_clut && transform->g_clut + 1 == transform->b_clut) {
if (transform->r_clut) free(transform->r_clut);
} else {
if (transform->r_clut) free(transform->r_clut);
if (transform->g_clut) free(transform->g_clut);
if (transform->b_clut) free(transform->b_clut);
}
if (transform->output_clut_table_r + transform->output_clut_table_length == transform->output_clut_table_g && transform->output_clut_table_g+ transform->output_clut_table_length == transform->output_clut_table_b) {
if (transform->output_clut_table_r) free(transform->output_clut_table_r);
} else {
if (transform->output_clut_table_r) free(transform->output_clut_table_r);
if (transform->output_clut_table_g) free(transform->output_clut_table_g);
if (transform->output_clut_table_b) free(transform->output_clut_table_b);
}
if (transform->output_gamma_lut_r) free(transform->output_gamma_lut_r);
if (transform->output_gamma_lut_g) free(transform->output_gamma_lut_g);
if (transform->output_gamma_lut_b) free(transform->output_gamma_lut_b);
free(transform);
transform = next_transform;
}
}
/* Set transform to be the next element in the linked list. */
static void append_transform(struct qcms_modular_transform *transform, struct qcms_modular_transform ***next_transform)
{
**next_transform = transform;
while (transform) {
*next_transform = &(transform->next_transform);
transform = transform->next_transform;
}
}
/* reverse the transformation list (used by mBA) */
static struct qcms_modular_transform* reverse_transform(struct qcms_modular_transform *transform)
{
struct qcms_modular_transform *prev_transform = NULL;
while (transform != NULL) {
struct qcms_modular_transform *next_transform = transform->next_transform;
transform->next_transform = prev_transform;
prev_transform = transform;
transform = next_transform;
}
return prev_transform;
}
#define EMPTY_TRANSFORM_LIST NULL
static struct qcms_modular_transform* qcms_modular_transform_create_mAB(struct lutmABType *lut)
{
struct qcms_modular_transform *first_transform = NULL;
struct qcms_modular_transform **next_transform = &first_transform;
struct qcms_modular_transform *transform = NULL;
if (lut->a_curves[0] != NULL) {
size_t clut_length;
float *clut;
// If the A curve is present this also implies the
// presence of a CLUT.
if (!lut->clut_table)
goto fail;
// Prepare A curve.
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
transform->input_clut_table_r = build_input_gamma_table(lut->a_curves[0]);
transform->input_clut_table_g = build_input_gamma_table(lut->a_curves[1]);
transform->input_clut_table_b = build_input_gamma_table(lut->a_curves[2]);
transform->transform_module_fn = qcms_transform_module_gamma_table;
if (lut->num_grid_points[0] != lut->num_grid_points[1] ||
lut->num_grid_points[1] != lut->num_grid_points[2] ) {
//XXX: We don't currently support clut that are not squared!
goto fail;
}
// Prepare CLUT
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
clut_length = sizeof(float)*pow(lut->num_grid_points[0], 3)*3;
clut = malloc(clut_length);
if (!clut)
goto fail;
memcpy(clut, lut->clut_table, clut_length);
transform->r_clut = clut + 0;
transform->g_clut = clut + 1;
transform->b_clut = clut + 2;
transform->grid_size = lut->num_grid_points[0];
transform->transform_module_fn = qcms_transform_module_clut_only;
}
if (lut->m_curves[0] != NULL) {
// M curve imples the presence of a Matrix
// Prepare M curve
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
transform->input_clut_table_r = build_input_gamma_table(lut->m_curves[0]);
transform->input_clut_table_g = build_input_gamma_table(lut->m_curves[1]);
transform->input_clut_table_b = build_input_gamma_table(lut->m_curves[2]);
transform->transform_module_fn = qcms_transform_module_gamma_table;
// Prepare Matrix
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
transform->matrix = build_mAB_matrix(lut);
if (transform->matrix.invalid)
goto fail;
transform->tx = s15Fixed16Number_to_float(lut->e03);
transform->ty = s15Fixed16Number_to_float(lut->e13);
transform->tz = s15Fixed16Number_to_float(lut->e23);
transform->transform_module_fn = qcms_transform_module_matrix_translate;
}
if (lut->b_curves[0] != NULL) {
// Prepare B curve
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
transform->input_clut_table_r = build_input_gamma_table(lut->b_curves[0]);
transform->input_clut_table_g = build_input_gamma_table(lut->b_curves[1]);
transform->input_clut_table_b = build_input_gamma_table(lut->b_curves[2]);
transform->transform_module_fn = qcms_transform_module_gamma_table;
} else {
// B curve is mandatory
goto fail;
}
if (lut->reversed) {
// mBA are identical to mAB except that the transformation order
// is reversed
first_transform = reverse_transform(first_transform);
}
return first_transform;
fail:
qcms_modular_transform_release(first_transform);
return NULL;
}
static struct qcms_modular_transform* qcms_modular_transform_create_lut(struct lutType *lut)
{
struct qcms_modular_transform *first_transform = NULL;
struct qcms_modular_transform **next_transform = &first_transform;
struct qcms_modular_transform *transform = NULL;
size_t in_curve_len, clut_length, out_curve_len;
float *in_curves, *clut, *out_curves;
// Prepare Matrix
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
transform->matrix = build_lut_matrix(lut);
if (transform->matrix.invalid)
goto fail;
transform->transform_module_fn = qcms_transform_module_matrix;
// Prepare input curves
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
in_curve_len = sizeof(float)*lut->num_input_table_entries * 3;
in_curves = malloc(in_curve_len);
if (!in_curves)
goto fail;
memcpy(in_curves, lut->input_table, in_curve_len);
transform->input_clut_table_r = in_curves + lut->num_input_table_entries * 0;
transform->input_clut_table_g = in_curves + lut->num_input_table_entries * 1;
transform->input_clut_table_b = in_curves + lut->num_input_table_entries * 2;
transform->input_clut_table_length = lut->num_input_table_entries;
// Prepare table
clut_length = sizeof(float)*pow(lut->num_clut_grid_points, 3)*3;
clut = malloc(clut_length);
if (!clut)
goto fail;
memcpy(clut, lut->clut_table, clut_length);
transform->r_clut = clut + 0;
transform->g_clut = clut + 1;
transform->b_clut = clut + 2;
transform->grid_size = lut->num_clut_grid_points;
// Prepare output curves
out_curve_len = sizeof(float) * lut->num_output_table_entries * 3;
out_curves = malloc(out_curve_len);
if (!out_curves)
goto fail;
memcpy(out_curves, lut->output_table, out_curve_len);
transform->output_clut_table_r = out_curves + lut->num_output_table_entries * 0;
transform->output_clut_table_g = out_curves + lut->num_output_table_entries * 1;
transform->output_clut_table_b = out_curves + lut->num_output_table_entries * 2;
transform->output_clut_table_length = lut->num_output_table_entries;
transform->transform_module_fn = qcms_transform_module_clut;
return first_transform;
fail:
qcms_modular_transform_release(first_transform);
return NULL;
}
struct qcms_modular_transform* qcms_modular_transform_create_input(qcms_profile *in)
{
struct qcms_modular_transform *first_transform = NULL;
struct qcms_modular_transform **next_transform = &first_transform;
if (in->A2B0) {
struct qcms_modular_transform *lut_transform;
lut_transform = qcms_modular_transform_create_lut(in->A2B0);
if (!lut_transform)
goto fail;
append_transform(lut_transform, &next_transform);
} else if (in->mAB && in->mAB->num_in_channels == 3 && in->mAB->num_out_channels == 3) {
struct qcms_modular_transform *mAB_transform;
mAB_transform = qcms_modular_transform_create_mAB(in->mAB);
if (!mAB_transform)
goto fail;
append_transform(mAB_transform, &next_transform);
} else {
struct qcms_modular_transform *transform;
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
transform->input_clut_table_r = build_input_gamma_table(in->redTRC);
transform->input_clut_table_g = build_input_gamma_table(in->greenTRC);
transform->input_clut_table_b = build_input_gamma_table(in->blueTRC);
transform->transform_module_fn = qcms_transform_module_gamma_table;
if (!transform->input_clut_table_r || !transform->input_clut_table_g ||
!transform->input_clut_table_b) {
goto fail;
}
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
transform->matrix.m[0][0] = 1/1.999969482421875f;
transform->matrix.m[0][1] = 0.f;
transform->matrix.m[0][2] = 0.f;
transform->matrix.m[1][0] = 0.f;
transform->matrix.m[1][1] = 1/1.999969482421875f;
transform->matrix.m[1][2] = 0.f;
transform->matrix.m[2][0] = 0.f;
transform->matrix.m[2][1] = 0.f;
transform->matrix.m[2][2] = 1/1.999969482421875f;
transform->matrix.invalid = false;
transform->transform_module_fn = qcms_transform_module_matrix;
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
transform->matrix = build_colorant_matrix(in);
transform->transform_module_fn = qcms_transform_module_matrix;
}
return first_transform;
fail:
qcms_modular_transform_release(first_transform);
return EMPTY_TRANSFORM_LIST;
}
static struct qcms_modular_transform* qcms_modular_transform_create_output(qcms_profile *out)
{
struct qcms_modular_transform *first_transform = NULL;
struct qcms_modular_transform **next_transform = &first_transform;
if (out->B2A0) {
struct qcms_modular_transform *lut_transform;
lut_transform = qcms_modular_transform_create_lut(out->B2A0);
if (!lut_transform)
goto fail;
append_transform(lut_transform, &next_transform);
} else if (out->mBA && out->mBA->num_in_channels == 3 && out->mBA->num_out_channels == 3) {
struct qcms_modular_transform *lut_transform;
lut_transform = qcms_modular_transform_create_mAB(out->mBA);
if (!lut_transform)
goto fail;
append_transform(lut_transform, &next_transform);
} else if (out->redTRC && out->greenTRC && out->blueTRC) {
struct qcms_modular_transform *transform;
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
transform->matrix = matrix_invert(build_colorant_matrix(out));
transform->transform_module_fn = qcms_transform_module_matrix;
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
transform->matrix.m[0][0] = 1.999969482421875f;
transform->matrix.m[0][1] = 0.f;
transform->matrix.m[0][2] = 0.f;
transform->matrix.m[1][0] = 0.f;
transform->matrix.m[1][1] = 1.999969482421875f;
transform->matrix.m[1][2] = 0.f;
transform->matrix.m[2][0] = 0.f;
transform->matrix.m[2][1] = 0.f;
transform->matrix.m[2][2] = 1.999969482421875f;
transform->matrix.invalid = false;
transform->transform_module_fn = qcms_transform_module_matrix;
transform = qcms_modular_transform_alloc();
if (!transform)
goto fail;
append_transform(transform, &next_transform);
build_output_lut(out->redTRC, &transform->output_gamma_lut_r,
&transform->output_gamma_lut_r_length);
build_output_lut(out->greenTRC, &transform->output_gamma_lut_g,
&transform->output_gamma_lut_g_length);
build_output_lut(out->blueTRC, &transform->output_gamma_lut_b,
&transform->output_gamma_lut_b_length);
transform->transform_module_fn = qcms_transform_module_gamma_lut;
if (!transform->output_gamma_lut_r || !transform->output_gamma_lut_g ||
!transform->output_gamma_lut_b) {
goto fail;
}
} else {
assert(0 && "Unsupported output profile workflow.");
return NULL;
}
return first_transform;
fail:
qcms_modular_transform_release(first_transform);
return EMPTY_TRANSFORM_LIST;
}
/* Not Completed
// Simplify the transformation chain to an equivalent transformation chain
static struct qcms_modular_transform* qcms_modular_transform_reduce(struct qcms_modular_transform *transform)
{
struct qcms_modular_transform *first_transform = NULL;
struct qcms_modular_transform *curr_trans = transform;
struct qcms_modular_transform *prev_trans = NULL;
while (curr_trans) {
struct qcms_modular_transform *next_trans = curr_trans->next_transform;
if (curr_trans->transform_module_fn == qcms_transform_module_matrix) {
if (next_trans && next_trans->transform_module_fn == qcms_transform_module_matrix) {
curr_trans->matrix = matrix_multiply(curr_trans->matrix, next_trans->matrix);
goto remove_next;
}
}
if (curr_trans->transform_module_fn == qcms_transform_module_gamma_table) {
bool isLinear = true;
uint16_t i;
for (i = 0; isLinear && i < 256; i++) {
isLinear &= (int)(curr_trans->input_clut_table_r[i] * 255) == i;
isLinear &= (int)(curr_trans->input_clut_table_g[i] * 255) == i;
isLinear &= (int)(curr_trans->input_clut_table_b[i] * 255) == i;
}
goto remove_current;
}
next_transform:
if (!next_trans) break;
prev_trans = curr_trans;
curr_trans = next_trans;
continue;
remove_current:
if (curr_trans == transform) {
//Update head
transform = next_trans;
} else {
prev_trans->next_transform = next_trans;
}
curr_trans->next_transform = NULL;
qcms_modular_transform_release(curr_trans);
//return transform;
return qcms_modular_transform_reduce(transform);
remove_next:
curr_trans->next_transform = next_trans->next_transform;
next_trans->next_transform = NULL;
qcms_modular_transform_release(next_trans);
continue;
}
return transform;
}
*/
static struct qcms_modular_transform* qcms_modular_transform_create(qcms_profile *in, qcms_profile *out)
{
struct qcms_modular_transform *first_transform = NULL;
struct qcms_modular_transform **next_transform = &first_transform;
if (in->color_space == RGB_SIGNATURE) {
struct qcms_modular_transform* rgb_to_pcs;
rgb_to_pcs = qcms_modular_transform_create_input(in);
if (!rgb_to_pcs)
goto fail;
append_transform(rgb_to_pcs, &next_transform);
} else {
assert(0 && "input color space not supported");
goto fail;
}
if (in->pcs == LAB_SIGNATURE && out->pcs == XYZ_SIGNATURE) {
struct qcms_modular_transform* lab_to_pcs;
lab_to_pcs = qcms_modular_transform_alloc();
if (!lab_to_pcs)
goto fail;
append_transform(lab_to_pcs, &next_transform);
lab_to_pcs->transform_module_fn = qcms_transform_module_LAB_to_XYZ;
}
// This does not improve accuracy in practice, something is wrong here.
//if (in->chromaticAdaption.invalid == false) {
// struct qcms_modular_transform* chromaticAdaption;
// chromaticAdaption = qcms_modular_transform_alloc();
// if (!chromaticAdaption)
// goto fail;
// append_transform(chromaticAdaption, &next_transform);
// chromaticAdaption->matrix = matrix_invert(in->chromaticAdaption);
// chromaticAdaption->transform_module_fn = qcms_transform_module_matrix;
//}
if (in->pcs == XYZ_SIGNATURE && out->pcs == LAB_SIGNATURE) {
struct qcms_modular_transform* pcs_to_lab;
pcs_to_lab = qcms_modular_transform_alloc();
if (!pcs_to_lab)
goto fail;
append_transform(pcs_to_lab, &next_transform);
pcs_to_lab->transform_module_fn = qcms_transform_module_XYZ_to_LAB;
}
if (out->color_space == RGB_SIGNATURE) {
struct qcms_modular_transform* pcs_to_rgb;
pcs_to_rgb = qcms_modular_transform_create_output(out);
if (!pcs_to_rgb)
goto fail;
append_transform(pcs_to_rgb, &next_transform);
} else {
assert(0 && "output color space not supported");
goto fail;
}
// Not Completed
//return qcms_modular_transform_reduce(first_transform);
return first_transform;
fail:
qcms_modular_transform_release(first_transform);
return EMPTY_TRANSFORM_LIST;
}
static float* qcms_modular_transform_data(struct qcms_modular_transform *transform, float *src, float *dest, size_t len)
{
while (transform != NULL) {
// Keep swaping src/dest when performing a transform to use less memory.
float *new_src = dest;
const transform_module_fn_t transform_fn = transform->transform_module_fn;
if (transform_fn != qcms_transform_module_gamma_table &&
transform_fn != qcms_transform_module_gamma_lut &&
transform_fn != qcms_transform_module_clut &&
transform_fn != qcms_transform_module_clut_only &&
transform_fn != qcms_transform_module_matrix &&
transform_fn != qcms_transform_module_matrix_translate &&
transform_fn != qcms_transform_module_LAB_to_XYZ &&
transform_fn != qcms_transform_module_XYZ_to_LAB) {
assert(0 && "Unsupported transform module");
return NULL;
}
if (transform->grid_size <= 0 &&
(transform_fn == qcms_transform_module_clut ||
transform_fn == qcms_transform_module_clut_only)) {
assert(0 && "Invalid transform");
return NULL;
}
transform->transform_module_fn(transform,src,dest,len);
dest = src;
src = new_src;
transform = transform->next_transform;
}
// The results end up in the src buffer because of the switching
return src;
}
float* qcms_chain_transform(qcms_profile *in, qcms_profile *out, float *src, float *dest, size_t lutSize)
{
struct qcms_modular_transform *transform_list = qcms_modular_transform_create(in, out);
if (transform_list != NULL) {
float *lut = qcms_modular_transform_data(transform_list, src, dest, lutSize/3);
qcms_modular_transform_release(transform_list);
return lut;
}
return NULL;
}