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iiqprofile.cpp
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iiqprofile.cpp
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/*
iiqprofile.cpp - Extracts camera profiles from IIQ into .ICC and .DCP format
Copyright 2021 Alexey Danilchenko
Written by Alexey Danilchenko
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version with ADDITION (see below).
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA.
*/
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string>
#include <map>
#include <vector>
#include <filesystem>
#define CMS_NO_PTHREADS
#define CMS_NO_REGISTER_KEYWORD
#include <lcms2.h>
#include "matrix3x3.h"
#pragma pack(push)
#pragma pack(1)
#define TIFF_VERSION_CLASSIC 42
#define TIFF_BIGENDIAN 0x4d4d
#define TIFF_LITTLEENDIAN 0x4949
#define IIQ_BIGENDIAN 0x4d4d4d4d
#define IIQ_LITTLEENDIAN 0x49494949
#define IIQ_RAW 0x526177
// copy constructors in variable array structs
#pragma warning( disable : 4200 )
// All the structures for the types in binary files go in C style declaration
// to maintain struct packing and avoid C++ alignment/padding
struct TTiffHeader
{
uint16_t magic; // magic number (defines uint8_t order)
uint16_t version; // TIFF version number
uint32_t dirOffset; // uint8_t offset to first directory
};
struct TTiffTagEntry
{
uint16_t tiffTag; // 0
uint16_t dataType; // 2
uint32_t dataCount; // 4
uint32_t dataOffset; // 8
};
struct TIIQHeader
{
uint32_t iiqMagic; // TIFF magic - 32bit
uint32_t rawMagic; // 'RawB','RawC','RawT','RawH' for raw or version for calibration
uint32_t dirOffset;
};
struct TIiqTagEntry
{
uint32_t tag; // 0
uint32_t dataType; // 4
uint32_t sizeBytes; // 8
uint32_t data; // 12
};
struct TIiqCalTagEntry
{
uint32_t tag; // 0
uint32_t sizeBytes; // 4
uint32_t data; // 8
};
enum EIIQTag
{
IIQ_RommMatrix = 0x0106,
IIQ_CamWhite = 0x0107,
IIQ_RommThumbMatrix = 0x0226,
TIFF_Make = 271,
TIFF_Model = 272
};
enum ETiffDataType
{
TIFF_NOTYPE = 0, // placeholder
TIFF_BYTE = 1, // 8-bit unsigned integer
TIFF_ASCII = 2, // 8-bit bytes w/ last byte null
TIFF_SHORT = 3, // 16-bit unsigned integer
TIFF_LONG = 4, // 32-bit unsigned integer
TIFF_RATIONAL = 5, // 64-bit unsigned fraction
TIFF_SBYTE = 6, // 8-bit signed integer
TIFF_UNDEFINED = 7, // 8-bit untyped data
TIFF_SSHORT = 8, // 16-bit signed integer
TIFF_SLONG = 9, // 32-bit signed integer
TIFF_SRATIONAL = 10, // 64-bit signed fraction
TIFF_FLOAT = 11, // 32-bit IEEE floating point
TIFF_DOUBLE = 12, // 64-bit IEEE floating point
TIFF_IFD = 13 // 32-bit unsigned integer (offset)
};
#pragma pack(pop)
// DNG SDK redefines basic datatypes and incorrecrly so we need
// local version of the fromBigEndian functions hence the include
vector3 stdWhiteDaylight;
matrix3x3 stdMatrixDaylight;
matrix3x3 stdMatrixDaylightThumb;
std::string cameraModel;
matrix3x3 proPhotoMatrix(0.7976685, 0.1351929, 0.0313416,
0.2880402, 0.7118835, 0.0000916,
0.0000000, 0.0000000, 0.8249054);
vector3 D50XYZ(cmsD50X, cmsD50Y, cmsD50Z);
bool useLinearCurve = false;
bool extWB = false;
bool doICC = false;
double iccGamma = 1.8;
// Standard illuminants taken from DNG
enum EIlluminant
{
lsUnknown = 0,
lsDaylight = 1,
lsFluorescent = 2,
lsTungsten = 3,
lsFlash = 4,
lsFineWeather = 9,
lsCloudyWeather = 10,
lsShade = 11,
lsDaylightFluorescent = 12, // D 5700 - 7100K
lsDayWhiteFluorescent = 13, // N 4600 - 5400K
lsCoolWhiteFluorescent = 14, // W 3900 - 4500K
lsWhiteFluorescent = 15, // WW 3200 - 3700K
lsStandardLightA = 17,
lsStandardLightB = 18,
lsStandardLightC = 19,
lsD55 = 20,
lsD65 = 21,
lsD75 = 22,
lsD50 = 23,
lsISOStudioTungsten = 24,
lsOther = 255
};
enum EDCPPolicy
{
pepAllowCopying = 0,
pepEmbedIfUsed = 1,
pepEmbedNever = 2,
pepNoRestrictions = 3
};
enum EDCPTag
{
DCPTAG_UniqueCameraModel = 50708,
DCPTAG_ColourMatrix1 = 50721,
DCPTAG_ColourMatrix2 = 50722,
DCPTAG_ReductionMatrix1 = 50725,
DCPTAG_ReductionMatrix2 = 50726,
DCPTAG_CalibrationIlluminant1 = 50778,
DCPTAG_CalibrationIlluminant2 = 50779,
DCPTAG_ProfileCalibrationSignature = 50932,
DCPTAG_ProfileName = 50936,
DCPTAG_ProfileHueSatMapDims = 50937,
DCPTAG_ProfileHueSatMapData1 = 50938,
DCPTAG_ProfileHueSatMapData2 = 50939,
DCPTAG_ProfileToneCurve = 50940,
DCPTAG_ProfileEmbedPolicy = 50941,
DCPTAG_ProfileCopyright = 50942,
DCPTAG_ForwardMatrix1 = 50964,
DCPTAG_ForwardMatrix2 = 50965,
DCPTAG_ProfileLookTableDims = 50981,
DCPTAG_ProfileLookTableData = 50982,
DCPTAG_ProfileHueSatMapEncoding = 51107,
DCPTAG_ProfileLookTableEncoding = 51108,
DCPTAG_BaselineExposureOffset = 51109,
DCPTAG_DefaultBlackRender = 51110
};
// DCP Profile
struct DCPProfile
{
struct TFPoint { float x; float y; };
using TToneCurve = std::vector<TFPoint>;
std::string name;
matrix3x3 cm[2];
matrix3x3 fm[2];
uint16_t calIllum[2];
std::string cameraModel;
std::string copyright;
uint32_t embedPolicy;
TToneCurve toneCurve;
void writeToFile(const std::string& filename);
};
uint32_t getTagDataSize(uint32_t dataType)
{
static const uint8_t tiffTagDataSize[] ={ 0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8 };
if (dataType < sizeof(tiffTagDataSize))
{
return tiffTagDataSize[dataType];
}
return 0;
}
using TDataVec = std::vector<uint8_t>;
inline void addTiffData(TTiffTagEntry& entry, TDataVec& tiffData, const void *data, const size_t size)
{
if (size > 0 && size <= 4)
std::memcpy(&entry.dataOffset, data, size);
else
{
// size padding to nearest 4 bytes
auto paddingSize = ((size + 3) & ~0x3) - size;
entry.dataOffset = tiffData.size();
tiffData.resize(tiffData.size()+size+paddingSize);
std::memcpy(tiffData.data()+entry.dataOffset, data, size);
if (paddingSize)
{
uint32_t pad = 0;
std::memcpy(tiffData.data()+entry.dataOffset+size, &pad, paddingSize);
}
}
}
void DCPProfile::writeToFile(const std::string& fileName)
{
std::vector<TTiffTagEntry> ifd;
TDataVec data;
TTiffHeader hdr;
// set byte order
uint16_t t = 1;
uint8_t* b = (uint8_t*)&t;
if (b[0])
std::memcpy(&hdr, "IIRC", 4);
else
std::memcpy(&hdr, "MMCR", 4);
hdr.dirOffset = sizeof(TTiffHeader);
if (!cameraModel.empty())
{
TTiffTagEntry tag {DCPTAG_UniqueCameraModel, TIFF_ASCII, (uint32_t)cameraModel.length()+1, 0};
addTiffData(tag, data, cameraModel.c_str(), tag.dataCount);
ifd.push_back(tag);
}
if (!name.empty())
{
TTiffTagEntry tag {DCPTAG_ProfileName, TIFF_ASCII, (uint32_t)name.length()+1, 0};
addTiffData(tag, data, name.c_str(), tag.dataCount);
ifd.push_back(tag);
}
if (!copyright.empty())
{
TTiffTagEntry tag {DCPTAG_ProfileCopyright, TIFF_ASCII, (uint32_t)copyright.length()+1, 0};
addTiffData(tag, data, copyright.c_str(), tag.dataCount);
ifd.push_back(tag);
}
TTiffTagEntry tag {DCPTAG_ProfileEmbedPolicy, TIFF_LONG, 1, embedPolicy};
ifd.push_back(tag);
if (calIllum[0] != lsUnknown)
{
// add illuminant 1
TTiffTagEntry tag {DCPTAG_CalibrationIlluminant1, TIFF_SHORT, 1, calIllum[0]};
ifd.push_back(tag);
// add FM 1
TSRational m[9];
fm[0].toRational(m);
tag = TTiffTagEntry {DCPTAG_ForwardMatrix1, TIFF_SRATIONAL, 9, 0};
addTiffData(tag, data, m, sizeof(m));
ifd.push_back(tag);
// add CM 1
cm[0].toRational(m);
tag = TTiffTagEntry {DCPTAG_ColourMatrix1, TIFF_SRATIONAL, 9, 0};
addTiffData(tag, data, m, sizeof(m));
ifd.push_back(tag);
}
if (calIllum[1] != lsUnknown)
{
// add illuminant 2
TTiffTagEntry tag {DCPTAG_CalibrationIlluminant2, TIFF_SHORT, 1, calIllum[1]};
ifd.push_back(tag);
// add FM 2
TSRational m[9];
fm[1].toRational(m);
tag = TTiffTagEntry {DCPTAG_ForwardMatrix2, TIFF_SRATIONAL, 9, 0};
addTiffData(tag, data, m, sizeof(m));
ifd.push_back(tag);
// add CM 2
cm[1].toRational(m);
tag = TTiffTagEntry {DCPTAG_ColourMatrix2, TIFF_SRATIONAL, 9, 0};
addTiffData(tag, data, m, sizeof(m));
ifd.push_back(tag);
}
if (toneCurve.size()>1)
{
TTiffTagEntry tag {DCPTAG_ProfileToneCurve, TIFF_FLOAT, (uint32_t)toneCurve.size()*2, 0};
addTiffData(tag, data, toneCurve.data(), tag.dataCount*sizeof(float));
ifd.push_back(tag);
}
// sort IFD
std::sort(ifd.begin(), ifd.end(), [](const auto& a, const auto& b) {
return a.tiffTag < b.tiffTag;
});
// correct IFD data offsets
uint32_t dataOffset = sizeof(TTiffHeader) + sizeof(TTiffTagEntry)*ifd.size() + 6;
for (auto& entry : ifd)
if (getTagDataSize(entry.dataType)*entry.dataCount>4)
entry.dataOffset += dataOffset;
if (auto file = fopen(fileName.c_str(), "wb"))
{
fwrite(&hdr, 1, sizeof(hdr), file);
uint16_t ifdSize = (uint16_t)ifd.size();
fwrite(&ifdSize, 1, sizeof(ifdSize), file);
fwrite(ifd.data(), sizeof(TTiffTagEntry), ifd.size(), file);
uint32_t nextIfd = 0;
fwrite(&nextIfd, 1, sizeof(nextIfd), file);
fwrite(data.data(), 1, data.size(), file);
fclose(file);
}
}
// Endianness
static bool bigEndian = false;
std::map<uint32_t, uint8_t> iiqTagDataTypes =
{
// INT32, type 1, single val
{ 0x100, TIFF_LONG },
{ 0x101, TIFF_LONG },
{ 0x103, TIFF_LONG },
{ 0x104, TIFF_LONG },
{ 0x105, TIFF_LONG },
{ 0x108, TIFF_LONG },
{ 0x109, TIFF_LONG },
{ 0x10A, TIFF_LONG },
{ 0x10B, TIFF_LONG },
{ 0x10C, TIFF_LONG },
{ 0x10D, TIFF_LONG },
{ 0x10E, TIFF_LONG },
{ 0x112, TIFF_LONG },
{ 0x113, TIFF_LONG },
{ 0x20B, TIFF_LONG },
{ 0x20C, TIFF_LONG },
{ 0x20E, TIFF_LONG },
{ 0x212, TIFF_LONG },
{ 0x213, TIFF_LONG },
{ 0x214, TIFF_LONG },
{ 0x215, TIFF_LONG },
{ 0x217, TIFF_LONG },
{ 0x218, TIFF_LONG },
{ 0x21A, TIFF_LONG },
{ 0x21D, TIFF_LONG },
{ 0x21E, TIFF_LONG },
{ 0x220, TIFF_LONG },
{ 0x222, TIFF_LONG },
{ 0x224, TIFF_LONG },
{ 0x227, TIFF_LONG },
{ 0x242, TIFF_LONG },
{ 0x243, TIFF_LONG },
{ 0x246, TIFF_LONG },
{ 0x247, TIFF_LONG },
{ 0x248, TIFF_LONG },
{ 0x249, TIFF_LONG },
{ 0x24A, TIFF_LONG },
{ 0x24B, TIFF_LONG },
{ 0x24C, TIFF_LONG },
{ 0x24D, TIFF_LONG },
{ 0x24E, TIFF_LONG },
{ 0x24F, TIFF_LONG },
{ 0x250, TIFF_LONG },
{ 0x251, TIFF_LONG },
{ 0x253, TIFF_LONG },
{ 0x254, TIFF_LONG },
{ 0x255, TIFF_LONG },
{ 0x256, TIFF_LONG },
{ 0x25B, TIFF_LONG },
{ 0x261, TIFF_LONG },
{ 0x263, TIFF_LONG },
{ 0x264, TIFF_LONG },
{ 0x265, TIFF_LONG },
{ 0x26B, TIFF_LONG },
{ 0x300, TIFF_LONG },
{ 0x304, TIFF_LONG },
{ 0x311, TIFF_LONG },
{ 0x404, TIFF_LONG },
{ 0x406, TIFF_LONG },
{ 0x407, TIFF_LONG },
{ 0x408, TIFF_LONG },
{ 0x409, TIFF_LONG },
{ 0x411, TIFF_LONG },
{ 0x413, TIFF_LONG },
{ 0x420, TIFF_LONG },
{ 0x450, TIFF_LONG },
{ 0x451, TIFF_LONG },
{ 0x452, TIFF_LONG },
{ 0x460, TIFF_LONG },
{ 0x463, TIFF_LONG },
{ 0x536, TIFF_LONG },
{ 0x537, TIFF_LONG },
{ 0x53E, TIFF_LONG },
{ 0x540, TIFF_LONG },
{ 0x541, TIFF_LONG },
{ 0x542, TIFF_LONG },
{ 0x543, TIFF_LONG },
{ 0x547, TIFF_LONG },
// ASCII, length as specified, type 4?
{ 0x102, TIFF_ASCII },
{ 0x200, TIFF_ASCII },
{ 0x201, TIFF_ASCII },
{ 0x203, TIFF_ASCII },
{ 0x204, TIFF_ASCII },
{ 0x262, TIFF_ASCII },
{ 0x301, TIFF_ASCII },
{ 0x310, TIFF_ASCII },
{ 0x312, TIFF_ASCII },
{ 0x410, TIFF_ASCII },
{ 0x412, TIFF_ASCII },
{ 0x530, TIFF_ASCII },
{ 0x531, TIFF_ASCII },
{ 0x532, TIFF_ASCII },
{ 0x533, TIFF_ASCII },
{ 0x534, TIFF_ASCII },
{ 0x535, TIFF_ASCII },
{ 0x548, TIFF_ASCII },
{ 0x549, TIFF_ASCII },
// FLOAT(32bits), length as specified
{ 0x106, TIFF_FLOAT },
{ 0x107, TIFF_FLOAT },
{ 0x205, TIFF_FLOAT },
{ 0x216, TIFF_FLOAT },
{ 0x226, TIFF_FLOAT },
{ 0x53D, TIFF_FLOAT },
// INT32, type 2, pointer
{ 0x10F, TIFF_LONG },
{ 0x110, TIFF_LONG },
{ 0x202, TIFF_LONG },
{ 0x20A, TIFF_LONG },
{ 0x20D, TIFF_LONG },
{ 0x21F, TIFF_LONG },
{ 0x223, TIFF_LONG },
{ 0x225, TIFF_LONG },
{ 0x258, TIFF_LONG },
{ 0x259, TIFF_LONG },
{ 0x25A, TIFF_LONG },
{ 0x260, TIFF_LONG },
{ 0x26A, TIFF_LONG },
// undefined, type 4?
{ 0x111, TIFF_UNDEFINED },
{ 0x219, TIFF_UNDEFINED },
// FLOAT, type 1
{ 0x20F, TIFF_FLOAT },
{ 0x210, TIFF_FLOAT },
{ 0x211, TIFF_FLOAT },
{ 0x21B, TIFF_FLOAT },
{ 0x221, TIFF_FLOAT },
{ 0x22A, TIFF_FLOAT },
{ 0x22B, TIFF_FLOAT },
{ 0x22C, TIFF_FLOAT },
{ 0x22F, TIFF_FLOAT },
{ 0x244, TIFF_FLOAT },
{ 0x245, TIFF_FLOAT },
{ 0x252, TIFF_FLOAT },
{ 0x257, TIFF_FLOAT },
{ 0x269, TIFF_FLOAT },
{ 0x320, TIFF_FLOAT },
{ 0x321, TIFF_FLOAT },
{ 0x322, TIFF_FLOAT },
{ 0x400, TIFF_FLOAT },
{ 0x401, TIFF_FLOAT },
{ 0x402, TIFF_FLOAT },
{ 0x403, TIFF_FLOAT },
{ 0x414, TIFF_FLOAT },
{ 0x415, TIFF_FLOAT },
{ 0x416, TIFF_FLOAT },
{ 0x417, TIFF_FLOAT },
{ 0x461, TIFF_FLOAT },
{ 0x462, TIFF_FLOAT },
{ 0x538, TIFF_FLOAT },
{ 0x539, TIFF_FLOAT },
{ 0x53A, TIFF_FLOAT },
{ 0x53F, TIFF_FLOAT },
// INT32, type 2
{ 0x21C, TIFF_LONG },
{ 0x25C, TIFF_LONG },
{ 0x25D, TIFF_LONG }
};
uint16_t fromBigEndian16(uint16_t ulValue)
{
if (!bigEndian)
return ulValue;
uint8_t *tmp = (uint8_t*) & ulValue;
// convert from big endian
return ((uint16_t)tmp[0] << 8) | (uint16_t)tmp[1];
}
uint32_t fromBigEndian(uint32_t ulValue)
{
if (!bigEndian)
return ulValue;
unsigned char *tmp = (unsigned char*) & ulValue;
// convert from big endian
return ((uint32_t)tmp[0] << 24) | ((uint32_t)tmp[1] << 16) | ((uint32_t)tmp[2] << 8) | (uint32_t)tmp[3];
}
uint64_t fromBigEndian64(uint64_t ulValue)
{
if (!bigEndian)
return ulValue;
unsigned char *tmp = (unsigned char*) & ulValue;
// convert from big endian
return ((uint64_t)tmp[0] << 56) | ((uint64_t)tmp[1] << 48) | ((uint64_t)tmp[2] << 40) | ((uint64_t)tmp[2] << 32) |
((uint64_t)tmp[4] << 24) | ((uint64_t)tmp[5] << 16) | ((uint64_t)tmp[6] << 8) | (uint64_t)tmp[7];
}
matrix3x3 getAdaptationMatrix(const vector3 &whiteFrom, const vector3 &whiteTo)
{
// Use the linearized Bradford adaptation matrix.
matrix3x3 mb( 0.8951, 0.2664, -0.1614,
-0.7502, 1.7135, 0.0367,
0.0389, -0.0685, 1.0296);
vector3 w1 = mb*whiteFrom;
vector3 w2 = mb*whiteTo;
// Negative white coordinates are kind of meaningless.
w1[0] = std::max(w1[0], 0.0);
w1[1] = std::max(w1[1], 0.0);
w1[2] = std::max(w1[2], 0.0);
w2[0] = std::max(w2[0], 0.0);
w2[1] = std::max(w2[1], 0.0);
w2[2] = std::max(w2[2], 0.0);
// Limit scaling to something reasonable.
matrix3x3 a;
a[0][0] = std::max(0.1, std::min(w1[0]>0.0?w2[0]/w1[0]:10.0, 10.0));
a[1][1] = std::max(0.1, std::min(w1[1]>0.0?w2[1]/w1[1]:10.0, 10.0));
a[2][2] = std::max(0.1, std::min(w1[2]>0.0?w2[2]/w1[2]:10.0, 10.0));
return Invert(mb)*a*mb;
}
void printMatrix(const char *title, const matrix3x3 &m)
{
uint16_t i, j;
if (title)
std::cout << title << "=";
for (i=0; i<3; i++)
{
for(j=0; j<3; j++)
std::cout << " " << m[i][j];
std::cout << std::endl;
}
}
void printVector(const char *title, const vector3 &v)
{
uint16_t i;
if (title)
std::cout << title << "=";
for (i=0; i<3; i++)
std::cout << " " << v[i];
std::cout << std::endl;
}
void processTag(bool isTiff, uint16_t iiqTag, uint16_t dataType, uint32_t sizeBytes, uint8_t *data)
{
uint32_t *ptr32 = (uint32_t*)data;
vector3* wbVector = 0;
matrix3x3* matrix = 0;
switch (iiqTag) {
case TIFF_Model:
if (isTiff)
{
cameraModel = "Phase One ";
cameraModel += (char*)data;
}
return;
case IIQ_CamWhite:
if (!extWB)
wbVector = &stdWhiteDaylight;
break;
case IIQ_RommMatrix:
matrix = &stdMatrixDaylight;
break;
case IIQ_RommThumbMatrix:
matrix = &stdMatrixDaylightThumb;
break;
default:
return;
}
if (wbVector && sizeBytes==3*sizeof(float))
{
uint32_t intVal = fromBigEndian(ptr32[0]);
float* fPtr = (float*)(&intVal);
(*wbVector)[0] = *fPtr ? 1.0 / *fPtr : *fPtr;
intVal = fromBigEndian(ptr32[1]);
(*wbVector)[1] = *fPtr ? 1.0 / *fPtr : *fPtr;
intVal = fromBigEndian(ptr32[2]);
(*wbVector)[2] = *fPtr ? 1.0 / *fPtr : *fPtr;
if (wbVector->max() != 0)
wbVector->scale(1/wbVector->max());
}
if (matrix && sizeBytes==9*sizeof(float))
{
uint32_t intVal = fromBigEndian(ptr32[0]);
float* fPtr = (float*)(&intVal);
(*matrix)[0][0] = *fPtr;
intVal = fromBigEndian(ptr32[1]);
(*matrix)[0][1] = *fPtr;
intVal = fromBigEndian(ptr32[2]);
(*matrix)[0][2] = *fPtr;
intVal = fromBigEndian(ptr32[3]);
(*matrix)[1][0] = *fPtr;
intVal = fromBigEndian(ptr32[4]);
(*matrix)[1][1] = *fPtr;
intVal = fromBigEndian(ptr32[5]);
(*matrix)[1][2] = *fPtr;
intVal = fromBigEndian(ptr32[6]);
(*matrix)[2][0] = *fPtr;
intVal = fromBigEndian(ptr32[7]);
(*matrix)[2][1] = *fPtr;
intVal = fromBigEndian(ptr32[8]);
(*matrix)[2][2] = *fPtr;
// convert to RGB-->XYZ matrix
*matrix = proPhotoMatrix * (*matrix);
// normalise
for (int i=0; i < 3; ++i)
{
double sum = 0.0;
for (int j=0; j < 3; ++j)
sum += (*matrix)[i][j];
for (int j=0; j < 3; ++j)
(*matrix)[i][j] /= sum;
}
// get max white XYZ (whitepoint)
vector3 maxRGB(1, 1, 1);
vector3 wp = (*matrix)*maxRGB;
// adaptation
*matrix = getAdaptationMatrix(wp, D50XYZ) * (*matrix);
}
}
void processIiqIfd(uint8_t* buf, uint32_t size, uint32_t ifdOffset)
{
uint8_t* end = buf + size;
uint32_t entries = fromBigEndian(*(uint32_t*)(buf+ifdOffset));
TIiqTagEntry* tagData = (TIiqTagEntry*)(buf+ifdOffset+8);
while (entries > 0)
{
uint32_t iiqTag = fromBigEndian(tagData->tag);
uint32_t data = fromBigEndian(tagData->data);
uint32_t dataType = iiqTagDataTypes[iiqTag] > 0
? iiqTagDataTypes[iiqTag]
: fromBigEndian(tagData->dataType);
uint32_t sizeBytes = fromBigEndian(tagData->sizeBytes);
if (sizeBytes <= 4)
data = (uint8_t*)(&(tagData->data)) - buf;
processTag(false, iiqTag, dataType, sizeBytes, buf + data);
// calculate offset for next tag
--entries;
++tagData;
if ((uint8_t*)tagData > end)
return;
}
}
void processTiffIfd(uint8_t* buf, uint32_t size, uint32_t ifdOffset)
{
uint8_t* end = buf + size;
uint32_t entries = fromBigEndian(*(uint16_t*)(buf+ifdOffset));
TTiffTagEntry* tagData = (TTiffTagEntry*)(buf+ifdOffset+2);
while (entries > 0)
{
uint32_t tiffTag = fromBigEndian(tagData->tiffTag);
uint32_t data = fromBigEndian(tagData->dataOffset);
uint32_t dataType = fromBigEndian16(tagData->dataType);
uint32_t sizeBytes = fromBigEndian(tagData->dataCount) * getTagDataSize(dataType);
if (sizeBytes <= 4)
data = (uint8_t*)(&(tagData->dataOffset)) - buf;
processTag(true, tiffTag, dataType, sizeBytes, buf + data);
// calculate offset for next tag
--entries;
++tagData;
if ((uint8_t*)tagData > end)
return;
}
}
bool processIiq(char* iiqFileName)
{
FILE *file = 0;
uint32_t inSize = (uint32_t)std::filesystem::file_size(iiqFileName);
if (inSize)
{
if ((file = fopen(iiqFileName,"rb"))==NULL)
return false;
auto inBuf = std::make_unique<uint8_t[]>(inSize+4);
uint32_t len=(uint32_t )fread(inBuf.get(), 1, inSize, file);
fclose(file);
if (inSize != len)
return false;
TTiffHeader* tiffHeader = (TTiffHeader*)inBuf.get();
TIIQHeader* iiqHeader = (TIIQHeader*)(inBuf.get()+sizeof(TTiffHeader));
bool validMagic = (tiffHeader->magic == TIFF_LITTLEENDIAN ||
tiffHeader->magic == TIFF_BIGENDIAN) &&
(iiqHeader->iiqMagic == IIQ_LITTLEENDIAN ||
iiqHeader->iiqMagic == IIQ_BIGENDIAN);
bigEndian = iiqHeader->iiqMagic == IIQ_BIGENDIAN;
if (!validMagic ||
fromBigEndian(iiqHeader->rawMagic)>>8 != IIQ_RAW ||
fromBigEndian(iiqHeader->dirOffset) == 0xbad0bad)
{
printf("The %s is not a IIQ file!\n", iiqFileName);
return false;
}
processTiffIfd(inBuf.get(), inSize, fromBigEndian(tiffHeader->dirOffset));
processIiqIfd((uint8_t*)iiqHeader,
(uint32_t)(inSize-sizeof(TTiffHeader)),
fromBigEndian(iiqHeader->dirOffset));
}
else
{
printf("Cannot read %s file!\n", iiqFileName);
return false;
}
return true;
}
std::string makeDcpName(const char* profName)
{
std::string name = profName;
if (useLinearCurve && !doICC)
name += " Linear";
return name;
}
std::string makeName(const char* profName)
{
std::string name = cameraModel;
name += ' ';
name += profName;
if (useLinearCurve && !doICC)
name += " Linear";
return name;
}
void correctFileName(std::string &fileName)
{
std::string::iterator iter = fileName.begin();
while (iter != fileName.end())
{
if (*iter == ' ' || *iter == '\\' || *iter == '/')
*iter = '_';
++iter;
}
}
bool setTextICCTag(cmsHPROFILE hProfile, cmsTagSignature sig, const char* data)
{
bool success = true;
cmsMLU *mluStr = cmsMLUalloc(0, 1);
if (mluStr)
{
success = success && cmsMLUsetASCII(mluStr, "en", "US", data);
success = success && cmsWriteTag(hProfile, sig, mluStr);
if (mluStr)
cmsMLUfree(mluStr);
}
else
success = false;
return success;
}
void createICC(const char* profName, matrix3x3 &matrix)
{
std::string name = makeName(profName);
std::cout << " Creating \"" << name << "\" ICC profile" << std::endl;
bool success = true;
cmsHPROFILE hICC;
cmsCIEXYZTRIPLE Colorants;
hICC = cmsCreateProfilePlaceholder(0);
if (!hICC)
{
std::cerr << "Error creating \"" << name << "\" ICC profile" << std::endl;
return;
}
// cmsSetProfileVersion(hICC, 4.3);
cmsSetProfileVersion(hICC, 2.2);
cmsSetDeviceClass(hICC, cmsSigInputClass);
cmsSetColorSpace(hICC, cmsSigRgbData);
cmsSetPCS(hICC, cmsSigXYZData);
cmsSetHeaderRenderingIntent(hICC, INTENT_PERCEPTUAL);
// Implement profile using following tags:
//
// 1 cmsSigProfileDescriptionTag
// 2 cmsSigMediaWhitePointTag
// 3 cmsSigRedColorantTag
// 4 cmsSigGreenColorantTag
// 5 cmsSigBlueColorantTag
// 6 cmsSigRedTRCTag
// 7 cmsSigGreenTRCTag
// 8 cmsSigBlueTRCTag
// text tags
success = success && setTextICCTag(hICC, cmsSigProfileDescriptionTag, name.c_str());
success = success && setTextICCTag(hICC, cmsSigDeviceModelDescTag, cameraModel.c_str());
success = success && setTextICCTag(hICC, cmsSigCopyrightTag, "Free to use");
// write D50 as white point
success = success && cmsWriteTag(hICC, cmsSigMediaWhitePointTag, cmsD50_XYZ());
// prepare XYZ matrix
Colorants.Red.X = matrix[0][0];
Colorants.Red.Y = matrix[1][0];
Colorants.Red.Z = matrix[2][0];
Colorants.Green.X = matrix[0][1];
Colorants.Green.Y = matrix[1][1];
Colorants.Green.Z = matrix[2][1];
Colorants.Blue.X = matrix[0][2];
Colorants.Blue.Y = matrix[1][2];
Colorants.Blue.Z = matrix[2][2];
success = success && cmsWriteTag(hICC, cmsSigRedColorantTag, (void*) &Colorants.Red);
success = success && cmsWriteTag(hICC, cmsSigGreenColorantTag, (void*) &Colorants.Green);
success = success && cmsWriteTag(hICC, cmsSigBlueColorantTag, (void*) &Colorants.Blue);
// use gamma tone curve
cmsToneCurve* tone = cmsBuildGamma(0, iccGamma);
success = success && cmsWriteTag(hICC, cmsSigRedTRCTag, (void*)tone);
success = success && cmsLinkTag (hICC, cmsSigGreenTRCTag, cmsSigRedTRCTag);
success = success && cmsLinkTag (hICC, cmsSigBlueTRCTag, cmsSigRedTRCTag);
if (tone)
cmsFreeToneCurve(tone);
// save to the file
std::string fName = name + ".ICC";
correctFileName(fName);
success = success && cmsSaveProfileToFile(hICC, fName.c_str());
if (hICC)
cmsCloseProfile(hICC);
if (!success)
std::cerr << "Error saving \"" << fName << "\" file!" << std::endl;
}
void createDCP(const char* profName, uint32_t light, matrix3x3 &matrix, vector3 &wp)
{
std::string name = makeName(profName);
std::cout << " Creating \"" << name << "\" DCP profile" << std::endl;
bool success = true;
// populate the profile
DCPProfile dcp;
dcp.name = makeDcpName(profName);
dcp.cm[0] = wp.asDiagMatrix() * Invert(matrix);
dcp.fm[0] = matrix;
dcp.calIllum[0] = light;
dcp.cameraModel = cameraModel.c_str();
dcp.copyright = "Free to use";
dcp.embedPolicy = pepNoRestrictions;
if (useLinearCurve)
dcp.toneCurve = { {0, 0}, {1, 1} };
// write it to a file
std::string fName = name + ".DCP";
correctFileName(fName);
dcp.writeToFile(fName);
}
void printUsage(char* appName)
{
fprintf(stderr,"IIQ Profile extraction utility\n");
fprintf(stderr,"Usage: %s -iglw [optional data] <IIQ file>\n", appName);
fprintf(stderr," No options - generates DCP profiles with Adobe curve\n");
fprintf(stderr," -l - generates DCP profiles with linear curve as opposed to Adobe standard\n");
fprintf(stderr," -w <R> <G> <B> - specifies neutral white as R, G, B levels to use for DCP profile\n");
fprintf(stderr," -w <R> <B> - specifies neutral white as R, B exposure corrections (like RPP)\n");
fprintf(stderr," to use for DCP profile\n");
fprintf(stderr," -i - generates ICC profiles instead of DCP\n");
fprintf(stderr," -g <gamma> - specifies gamma (1-2.8) to use for TRC in ICC profile (1.8 by default)\n");
fprintf(stderr," (should only be used with -i option)\n");
}
int main(int argc, char *argv[])
{
if (argc < 2 || argc > 6 || (argc > 2 && argc <= 4 && *argv[1] != '-'))
{
printUsage(argv[0]);
return 1;
}
// parse parameters