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DngFloatWriter.cpp
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/*
* HDRMerge - HDR exposure merging software.
* Copyright 2012 Javier Celaya
*
* This file is part of HDRMerge.
*
* HDRMerge 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 of the License, or
* (at your option) any later version.
*
* HDRMerge 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 HDRMerge. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <iostream>
#include <cmath>
#include <QBuffer>
#include <QDateTime>
#include <QImageWriter>
#include <zlib.h>
#include "config.h"
#include "DngFloatWriter.hpp"
#include "RawParameters.hpp"
#include "Log.hpp"
#include "ExifTransfer.hpp"
using namespace std;
namespace hdrmerge {
enum {
DNGVERSION = 50706,
DNGBACKVERSION = 50707,
CALIBRATIONILLUMINANT = 50778,
COLORMATRIX = 50721,
PROFILENAME = 50936,
NEWSUBFILETYPE = 254,
IMAGEWIDTH = 256,
IMAGELENGTH = 257,
PHOTOINTERPRETATION = 262,
SAMPLESPERPIXEL = 277,
BITSPERSAMPLE = 258,
FILLORDER = 266,
ACTIVEAREA = 50829,
MASKEDAREAS = 50830,
CROPORIGIN = 50719,
CROPSIZE = 50720,
TILEWIDTH = 322,
TILELENGTH = 323,
TILEOFFSETS = 324,
TILEBYTES = 325,
ROWSPERSTRIP = 278,
STRIPOFFSETS = 273,
STRIPBYTES = 279,
PLANARCONFIG = 284,
COMPRESSION = 259,
PREDICTOR = 317,
SAMPLEFORMAT = 339,
BLACKLEVELREP = 50713,
BLACKLEVEL = 50714,
WHITELEVEL = 50717,
CFAPATTERNDIM = 33421,
CFAPATTERN = 33422,
CFAPLANECOLOR = 50710,
CFALAYOUT = 50711,
ANALOGBALANCE = 50727,
CAMERANEUTRAL = 50728,
ORIENTATION = 274,
UNIQUENAME = 50708,
SUBIFDS = 330,
TIFFEPSTD = 37398,
MAKE = 271,
MODEL = 272,
SOFTWARE = 305,
DATETIMEORIGINAL = 36867,
DATETIME = 306,
IMAGEDESCRIPTION = 270,
RESOLUTIONUNIT = 269,
XRESOLUTION = 282,
YRESOLUTION = 283,
COPYRIGHT = 33432,
YCBCRCOEFFS = 529,
YCBCRSUBSAMPLING = 530,
YCBCRPOSITIONING = 531,
REFBLACKWHITE = 532,
};
enum {
TIFF_CM = 3,
TIFF_D65 = 21,
TIFF_RGB = 2,
TIFF_UNCOMPRESSED = 1,
TIFF_DEFLATE = 8,
TIFF_JPEG = 7,
TIFF_FP2XPREDICTOR = 34894,
TIFF_FPFORMAT = 3,
TIFF_CFA = 32803,
TIFF_YCBCR = 6,
};
void DngFloatWriter::write(Array2D<float> && rawPixels, const RawParameters & p, const QString & dstFileName) {
params = &p;
rawData = std::move(rawPixels);
width = rawData.getWidth();
height = rawData.getHeight();
renderPreviews();
createMainIFD();
subIFDoffsets[0] = 8 + mainIFD.length();
createRawIFD();
size_t dataOffset = subIFDoffsets[0] + rawIFD.length();
if (previewWidth > 0) {
createPreviewIFD();
subIFDoffsets[1] = subIFDoffsets[0] + rawIFD.length();
dataOffset += previewIFD.length();
}
mainIFD.setValue(SUBIFDS, (const void *)subIFDoffsets);
pos = dataOffset;
size_t dataSize = dataOffset + thumbSize() + previewSize() + rawSize();
fileData.reset(new uint8_t[dataSize]);
Timer t("Write output");
writePreviews();
writeRawData();
dataSize = pos;
pos = 0;
TiffHeader().write(fileData.get(), pos);
mainIFD.write(fileData.get(), pos, false);
rawIFD.write(fileData.get(), pos, false);
if (previewWidth > 0) {
previewIFD.write(fileData.get(), pos, false);
}
Exif::transfer(p.fileName, dstFileName, fileData.get(), dataSize);
}
void DngFloatWriter::createMainIFD() {
uint8_t dngVersion[] = { 1, 4, 0, 0 };
mainIFD.addEntry(DNGVERSION, IFD::BYTE, 4, dngVersion);
mainIFD.addEntry(DNGBACKVERSION, IFD::BYTE, 4, dngVersion);
uint8_t tiffep[] = { 1, 0, 0, 0 };
mainIFD.addEntry(TIFFEPSTD, IFD::BYTE, 4, tiffep);
mainIFD.addEntry(MAKE, params->maker);
mainIFD.addEntry(MODEL, params->model);
mainIFD.addEntry(SOFTWARE, "HDRMerge " HDRMERGE_VERSION_STRING);
mainIFD.addEntry(RESOLUTIONUNIT, IFD::SHORT, TIFF_CM);
uint32_t resolution[] = { 100, 1 };
mainIFD.addEntry(XRESOLUTION, IFD::RATIONAL, 1, resolution);
mainIFD.addEntry(YRESOLUTION, IFD::RATIONAL, 1, resolution);
mainIFD.addEntry(COPYRIGHT, "");
mainIFD.addEntry(IMAGEDESCRIPTION, params->description);
QDateTime currentTime = QDateTime::currentDateTime();
QString currentTimeText = currentTime.toString("yyyy:MM:dd hh:mm:ss");
mainIFD.addEntry(DATETIME, currentTimeText.toAscii().constData());
mainIFD.addEntry(DATETIMEORIGINAL, params->dateTime);
// Profile
mainIFD.addEntry(CALIBRATIONILLUMINANT, IFD::SHORT, TIFF_D65);
string profName(params->maker + " " + params->model);
mainIFD.addEntry(PROFILENAME, profName);
int32_t colorMatrix[24];
for (int row = 0, i = 0; row < params->colors; ++row) {
for (int col = 0; col < 3; ++col) {
colorMatrix[i++] = std::round(params->camXyz[row][col] * 10000.0f);
colorMatrix[i++] = 10000;
}
}
mainIFD.addEntry(COLORMATRIX, IFD::SRATIONAL, params->colors * 3, colorMatrix);
// Color
uint32_t analogBalance[] = { 1, 1, 1, 1, 1, 1, 1, 1 };
mainIFD.addEntry(ANALOGBALANCE, IFD::RATIONAL, params->colors, analogBalance);
double wb[] = { 1.0/params->camMul[0], 1.0/params->camMul[1], 1.0/params->camMul[2], 1.0/params->camMul[3] };
uint32_t cameraNeutral[] = {
(uint32_t)std::round(1000000.0 * wb[0]), 1000000,
(uint32_t)std::round(1000000.0 * wb[1]), 1000000,
(uint32_t)std::round(1000000.0 * wb[2]), 1000000,
(uint32_t)std::round(1000000.0 * wb[3]), 1000000};
mainIFD.addEntry(CAMERANEUTRAL, IFD::RATIONAL, params->colors, cameraNeutral);
mainIFD.addEntry(ORIENTATION, IFD::SHORT, params->tiffOrientation);
mainIFD.addEntry(UNIQUENAME, params->maker + " " + params->model);
// TODO: Add Digest and Unique ID
mainIFD.addEntry(SUBIFDS, IFD::LONG, previewWidth > 0 ? 2 : 1, subIFDoffsets);
// Thumbnail
mainIFD.addEntry(NEWSUBFILETYPE, IFD::LONG, 1);
mainIFD.addEntry(IMAGEWIDTH, IFD::LONG, thumbnail.width());
mainIFD.addEntry(IMAGELENGTH, IFD::LONG, thumbnail.height());
mainIFD.addEntry(SAMPLESPERPIXEL, IFD::SHORT, 3);
uint16_t bpsthumb[] = {8, 8, 8};
mainIFD.addEntry(BITSPERSAMPLE, IFD::SHORT, 3, bpsthumb);
mainIFD.addEntry(PLANARCONFIG, IFD::SHORT, 1);
mainIFD.addEntry(PHOTOINTERPRETATION, IFD::SHORT, TIFF_RGB);
mainIFD.addEntry(COMPRESSION, IFD::SHORT, TIFF_UNCOMPRESSED);
mainIFD.addEntry(ROWSPERSTRIP, IFD::LONG, thumbnail.height());
mainIFD.addEntry(STRIPBYTES, IFD::LONG, 0);
mainIFD.addEntry(STRIPOFFSETS, IFD::LONG, 0);
}
void DngFloatWriter::calculateTiles() {
int bytesPerTile = 512 * 1024;
int cellSize = 16;
uint32_t bytesPerSample = bps >> 3;
uint32_t samplesPerTile = bytesPerTile / bytesPerSample;
uint32_t tileSide = std::round(std::sqrt(samplesPerTile));
tileWidth = std::min(width, tileSide);
tilesAcross = (width + tileWidth - 1) / tileWidth;;
tileWidth = (width + tilesAcross - 1) / tilesAcross;
tileWidth = ((tileWidth + cellSize - 1) / cellSize) * cellSize;
tileLength = std::min(samplesPerTile / tileWidth, height);
tilesDown = (height + tileLength - 1) / tileLength;
tileLength = (height + tilesDown - 1) / tilesDown;
tileLength = ((tileLength + cellSize - 1) / cellSize) * cellSize;
}
void DngFloatWriter::createRawIFD() {
uint16_t cfaRows = params->FC.getRows(), cfaCols = params->FC.getColumns();
uint16_t cfaPatternDim[] = { cfaRows, cfaCols };
rawIFD.addEntry(NEWSUBFILETYPE, IFD::LONG, 0x10001); // Fix it later in ExifTransfer.cpp
rawIFD.addEntry(IMAGEWIDTH, IFD::LONG, width);
rawIFD.addEntry(IMAGELENGTH, IFD::LONG, height);
// Areas
uint32_t crop[2];
crop[0] = crop[1] = 0;
rawIFD.addEntry(CROPORIGIN, IFD::LONG, 2, crop);
crop[0] = params->width;
crop[1] = params->height;
rawIFD.addEntry(CROPSIZE, IFD::LONG, 2, crop);
uint32_t aa[4];
aa[0] = params->topMargin;
aa[1] = params->leftMargin;
aa[2] = aa[0] + params->height;
aa[3] = aa[1] + params->width;
rawIFD.addEntry(ACTIVEAREA, IFD::LONG, 4, aa);
rawIFD.addEntry(BLACKLEVELREP, IFD::SHORT, 2, cfaPatternDim);
uint16_t cblack[cfaRows * cfaCols];
for (int row = 0; row < cfaRows; ++row) {
for (int col = 0; col < cfaCols; ++col) {
cblack[row*cfaCols + col] = params->blackAt(col, row);
}
}
rawIFD.addEntry(BLACKLEVEL, IFD::SHORT, cfaRows * cfaCols, cblack);
rawIFD.addEntry(WHITELEVEL, IFD::SHORT, params->max);
rawIFD.addEntry(SAMPLESPERPIXEL, IFD::SHORT, 1);
rawIFD.addEntry(BITSPERSAMPLE, IFD::SHORT, bps);
if (bps == 24) {
rawIFD.addEntry(FILLORDER, IFD::SHORT, 1);
}
rawIFD.addEntry(PLANARCONFIG, IFD::SHORT, 1);
rawIFD.addEntry(COMPRESSION, IFD::SHORT, TIFF_DEFLATE);
rawIFD.addEntry(PREDICTOR, IFD::SHORT, TIFF_FP2XPREDICTOR);
rawIFD.addEntry(SAMPLEFORMAT, IFD::SHORT, TIFF_FPFORMAT);
calculateTiles();
uint32_t numTiles = tilesAcross * tilesDown;
uint32_t buffer[numTiles];
rawIFD.addEntry(TILEWIDTH, IFD::LONG, tileWidth);
rawIFD.addEntry(TILELENGTH, IFD::LONG, tileLength);
rawIFD.addEntry(TILEOFFSETS, IFD::LONG, numTiles, buffer);
rawIFD.addEntry(TILEBYTES, IFD::LONG, numTiles, buffer);
rawIFD.addEntry(PHOTOINTERPRETATION, IFD::SHORT, TIFF_CFA);
rawIFD.addEntry(CFAPATTERNDIM, IFD::SHORT, 2, cfaPatternDim);
uint8_t cfaPattern[cfaRows * cfaCols];
for (int row = 0; row < cfaRows; ++row) {
for (int col = 0; col < cfaCols; ++col) {
cfaPattern[row*cfaCols + col] = params->FC(col, row);
}
}
if (params->colors == 3) {
for (uint8_t & i : cfaPattern) {
if (i == 3) i = 1;
}
}
rawIFD.addEntry(CFAPATTERN, IFD::BYTE, cfaRows * cfaCols, cfaPattern);
uint8_t cfaPlaneColor[] = { 0, 1, 2, 3 };
rawIFD.addEntry(CFAPLANECOLOR, IFD::BYTE, params->colors, cfaPlaneColor);
rawIFD.addEntry(CFALAYOUT, IFD::SHORT, 1);
}
void DngFloatWriter::createPreviewIFD() {
previewIFD.addEntry(NEWSUBFILETYPE, IFD::LONG, 1);
previewIFD.addEntry(IMAGEWIDTH, IFD::LONG, preview.width());
previewIFD.addEntry(IMAGELENGTH, IFD::LONG, preview.height());
previewIFD.addEntry(SAMPLESPERPIXEL, IFD::SHORT, 3);
uint16_t bpspre[] = {8, 8, 8};
previewIFD.addEntry(BITSPERSAMPLE, IFD::SHORT, 3, bpspre);
previewIFD.addEntry(PLANARCONFIG, IFD::SHORT, 1);
previewIFD.addEntry(PHOTOINTERPRETATION, IFD::SHORT, TIFF_YCBCR);
previewIFD.addEntry(COMPRESSION, IFD::SHORT, TIFF_JPEG);
previewIFD.addEntry(ROWSPERSTRIP, IFD::LONG, preview.height());
previewIFD.addEntry(STRIPBYTES, IFD::LONG, 0);
previewIFD.addEntry(STRIPOFFSETS, IFD::LONG, 0);
uint16_t subsampling[] = { 2, 2 };
previewIFD.addEntry(YCBCRSUBSAMPLING, IFD::SHORT, 2, subsampling);
previewIFD.addEntry(YCBCRPOSITIONING, IFD::SHORT, 2);
uint32_t coefficients[] = { 299, 1000, 587, 1000, 114, 1000 };
previewIFD.addEntry(YCBCRCOEFFS, IFD::RATIONAL, 3, coefficients);
uint32_t refs[] = { 0, 1, 255, 1, 128, 1, 255, 1, 128, 1, 255, 1};
previewIFD.addEntry(REFBLACKWHITE, IFD::RATIONAL, 6, refs);
}
void DngFloatWriter::renderPreviews() {
if (previewWidth > 0) {
QBuffer buffer(&jpegPreviewData);
buffer.open(QIODevice::WriteOnly);
QImageWriter writer(&buffer, "JPEG");
writer.setQuality(85);
if (!writer.write(preview)) {
cerr << "Error converting the preview to JPEG: " << writer.errorString() << endl;
previewWidth = 0;
}
}
}
void DngFloatWriter::setPreview(const QImage & p) {
thumbnail = p.scaledToWidth(256, Qt::SmoothTransformation).convertToFormat(QImage::Format_RGB888);
if (previewWidth != p.width()) {
preview = p.scaledToWidth(previewWidth, Qt::SmoothTransformation);
} else {
preview = p;
}
}
size_t DngFloatWriter::thumbSize() {
return thumbnail.width() * thumbnail.height() * 3;
}
size_t DngFloatWriter::previewSize() {
return previewWidth > 0 ? jpegPreviewData.size() : 0;
}
void DngFloatWriter::writePreviews() {
size_t ts = thumbSize();
mainIFD.setValue(STRIPBYTES, ts);
mainIFD.setValue(STRIPOFFSETS, pos);
pos = std::copy_n((const uint8_t *)thumbnail.bits(), ts, &fileData[pos]) - fileData.get();
if (previewWidth > 0) {
ts = previewSize();
previewIFD.setValue(STRIPBYTES, ts);
previewIFD.setValue(STRIPOFFSETS, pos);
pos = std::copy_n((const uint8_t *)jpegPreviewData.constData(), ts, &fileData[pos]) - fileData.get();
}
}
static void encodeFPDeltaRow(Bytef * src, Bytef * dst, size_t tileWidth, size_t realTileWidth, int bytesps, int factor) {
// Reorder bytes into the image
// 16 and 32-bit versions depend on local architecture, 24-bit does not
if (bytesps == 3) {
for (size_t col = 0; col < tileWidth; ++col) {
dst[col] = src[col*3];
dst[col + realTileWidth] = src[col*3 + 1];
dst[col + realTileWidth*2] = src[col*3 + 2];
}
} else {
for (size_t col = 0; col < tileWidth; ++col) {
for (int byte = 0; byte < bytesps; ++byte)
#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
dst[col + realTileWidth*(bytesps-byte-1)] = src[col*bytesps + byte];
#else
dst[col + realTileWidth*byte] = src[col*bytesps + byte];
#endif
}
}
// EncodeDeltaBytes
for (int col = realTileWidth*bytesps - 1; col >= factor; --col) {
dst[col] -= dst[col - factor];
}
}
// From DNG SDK dng_utils.h
inline uint16_t DNG_FloatToHalf(uint32_t i) {
int32_t sign = (i >> 16) & 0x00008000;
int32_t exponent = ((i >> 23) & 0x000000ff) - (127 - 15);
int32_t mantissa = i & 0x007fffff;
if (exponent <= 0) {
if (exponent < -10) {
return (uint16_t)sign;
}
mantissa = (mantissa | 0x00800000) >> (1 - exponent);
if (mantissa & 0x00001000)
mantissa += 0x00002000;
return (uint16_t)(sign | (mantissa >> 13));
} else if (exponent == 0xff - (127 - 15)) {
if (mantissa == 0) {
return (uint16_t)(sign | 0x7c00);
} else {
return (uint16_t)(sign | 0x7c00 | (mantissa >> 13));
}
}
if (mantissa & 0x00001000) {
mantissa += 0x00002000;
if (mantissa & 0x00800000) {
mantissa = 0; // overflow in significand,
exponent += 1; // adjust exponent
}
}
if (exponent > 30) {
return (uint16_t)(sign | 0x7c00); // infinity with the same sign as f.
}
return (uint16_t)(sign | (exponent << 10) | (mantissa >> 13));
}
inline void DNG_FloatToFP24(uint32_t input, uint8_t *output) {
int32_t exponent = (int32_t) ((input >> 23) & 0xFF) - 128;
int32_t mantissa = input & 0x007FFFFF;
if (exponent == 127) {
if (mantissa != 0x007FFFFF && ((mantissa >> 7) == 0xFFFF)) {
mantissa &= 0x003FFFFF; // knock out msb to make it a NaN
}
} else if (exponent > 63) {
exponent = 63;
mantissa = 0x007FFFFF;
} else if (exponent <= -64) {
if (exponent >= -79) {
mantissa = (mantissa | 0x00800000) >> (-63 - exponent);
} else {
mantissa = 0;
}
exponent = -64;
}
output [0] = (uint8_t)(((input >> 24) & 0x80) | (uint32_t) (exponent + 64));
output [1] = (mantissa >> 15) & 0x00FF;
output [2] = (mantissa >> 7) & 0x00FF;
}
static void compressFloats(Bytef * dst, int tileWidth, int bytesps) {
if (bytesps == 2) {
uint16_t * dst16 = (uint16_t *) dst;
uint32_t * dst32 = (uint32_t *) dst;
for (int i = 0; i < tileWidth; ++i) {
dst16[i] = DNG_FloatToHalf(dst32[i]);
}
} else if (bytesps == 3) {
uint8_t * dst8 = (uint8_t *) dst;
uint32_t * dst32 = (uint32_t *) dst;
for (int i = 0; i < tileWidth; ++i) {
DNG_FloatToFP24(dst32[i], dst8);
dst8 += 3;
}
}
}
size_t DngFloatWriter::rawSize() {
// Worst case size
return tilesAcross * tilesDown * tileWidth * tileLength * (bps >> 3);
}
void DngFloatWriter::writeRawData() {
size_t tileCount = tilesAcross * tilesDown;
uint32_t tileOffsets[tileCount];
uint32_t tileBytes[tileCount];
int bytesps = bps >> 3;
uLongf dstLen = tileWidth * tileLength * bytesps;
#pragma omp parallel
{
Bytef * cBuffer = new Bytef[dstLen];
Bytef * uBuffer = new Bytef[dstLen];
#pragma omp for collapse(2) schedule(dynamic)
for (size_t y = 0; y < height; y += tileLength) {
for (size_t x = 0; x < width; x += tileWidth) {
size_t t = (y / tileLength) * tilesAcross + (x / tileWidth);
size_t thisTileLength = y + tileLength > height ? height - y : tileLength;
size_t thisTileWidth = x + tileWidth > width ? width - x : tileWidth;
if (thisTileLength != tileLength || thisTileWidth != tileWidth) {
fill_n(uBuffer, dstLen, 0);
}
for (size_t row = 0; row < thisTileLength; ++row) {
Bytef * dst = uBuffer + row*tileWidth*bytesps;
Bytef * src = (Bytef *)&rawData(x, y+row);
compressFloats(src, thisTileWidth, bytesps);
encodeFPDeltaRow(src, dst, thisTileWidth, tileWidth, bytesps, 2);
}
uLongf conpressedLength = dstLen;
int err = compress(cBuffer, &conpressedLength, uBuffer, dstLen);
tileBytes[t] = conpressedLength;
if (err != Z_OK) {
std::cerr << "DNG Deflate: Failed compressing tile " << t << ", with error " << err << std::endl;
} else {
#pragma omp critical
{
tileOffsets[t] = pos;
std::copy_n((const uint8_t *)cBuffer, tileBytes[t], &fileData[pos]);
pos += tileBytes[t];
}
}
}
}
delete [] cBuffer;
delete [] uBuffer;
}
rawIFD.setValue(TILEOFFSETS, tileOffsets);
rawIFD.setValue(TILEBYTES, tileBytes);
}
} // namespace hdrmerge