I have a few questions regarding the Adobe DNG SDK and if i am using it correctly.
So the flow of my program works as follows: i read a custom binary file containing the raw data.
This will be the buffer of my output DNG. I can open the produced DNG in the windows preview correctly and
also in Adobe Photoshop, but if I want to open it in some other programs like LibRaw or RawTherapee, the image
is just completely black.
I will post my programm and the log of DNGValidate.exe , perhaps you have an idea what went wrong.
Here is a link of my DNG.
See my program below
#include "DNGWriter.h"
namespace Unpacker {
dng_error_code CDNGWriter::writeDNG(byte *pFrame, const std::string &fileName) {
try {
m_pDngImage.Reset(m_dngHost.Make_dng_image(m_imageRect, 1, m_depth == 8 ? ttByte : ttShort));
m_dngBuffer.fArea = m_imageRect;
m_dngBuffer.fPlane = 0;
m_dngBuffer.fPlanes = 1;
m_dngBuffer.fRowStep = m_dngBuffer.fPlanes * m_imageRect.W();
m_dngBuffer.fColStep = m_dngBuffer.fPlanes;
m_dngBuffer.fPlaneStep = 1;
m_dngBuffer.fPixelType = m_depth == 8 ? ttByte : ttShort;
m_dngBuffer.fPixelSize = TagTypeSize(m_depth == 8 ? ttByte : ttShort);
m_dngBuffer.fData = pFrame;
m_pDngImage->Put(m_dngBuffer);
// -------------------------------------------------------------
// Write DNG file
// -------------------------------------------------------------
// Assign Raw image data.
m_pDngNegative->SetStage1Image(m_pDngImage);
// Compute linearized and range mapped image
m_pDngNegative->BuildStage2Image(m_dngHost);
// Compute demosaiced image (used by preview and thumbnail)
m_pDngNegative->BuildStage3Image(m_dngHost);
// Update XMP / EXIF
m_pDngNegative->SynchronizeMetadata();
// Update IPTC
m_pDngNegative->RebuildIPTC(true);
// Create stream writer for output file
dng_file_stream fstream(fileName.c_str(), true);
// Create thumbnail
dng_image_preview thumbnail;
dng_render render(m_dngHost, *m_pDngNegative);
render.SetFinalSpace(dng_space_sRGB::Get());
render.SetFinalPixelType(m_depth == 8 ? ttByte : ttSShort);
render.SetMaximumSize(1 << m_depth);
thumbnail.fImage.Reset(render.Render());
AutoPtr<dng_image_writer> oWriter(new dng_image_writer());
oWriter->WriteDNG(m_dngHost, fstream, *m_pDngNegative.Get(), NULL, dngVersion_1_3_0_0, ccUncompressed);
} catch (const dng_exception &ex) {
return ex.ErrorCode();
} catch (...) {
return dng_error_none;
}
return dng_error_none;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////
dng_error_code CDNGWriter::setup(int rows, int cols, int depth) {
try {
m_depth = depth;
m_imageRect = dng_rect(cols, rows);
// Set DNG version
// Remarks: Tag [DNGVersion] / [50706]
// dngVersion default is the most recent one with 1.4.0.0
m_dngHost.SetSaveDNGVersion(dngVersion_SaveDefault);
// Set DNG type to RAW DNG
// Remarks: Store Bayer CFA data and not already processed data
m_dngHost.SetSaveLinearDNG(false);
// ---------------------------------------------------------------------------------------------------------------
// DNG Negative Settings
// ---------------------------------------------------------------------------------------------------------------
m_pDngNegative.Reset(m_dngHost.Make_dng_negative());
// Set camera model
// Remarks: Tag [UniqueCameraModel] / [50708]
m_pDngNegative->SetModelName("MyModel");
// Set localized camera model
// Remarks: Tag [UniqueCameraModel] / [50709]
m_pDngNegative->SetLocalName("Grass hopper");
// Set colorkey information
// Remarks: Tag
m_pDngNegative->SetColorKeys(colorKeyRed, colorKeyGreen, colorKeyBlue);
// Set bayer pattern information
// Remarks: Tag [CFAPlaneColor] / [50710] and [CFALayout] / [50711]
// bayer pattern depends on the colorkey set by
// dngNegative->SetColorKeys(colorKeyRed, colorKeyGreen, colorKeyBlue);
// In this case: 3 means GBGR bayer pattern
m_pDngNegative->SetBayerMosaic(3);
// Set colorchannel information
m_pDngNegative->SetColorChannels(3);
// Set linearization table
// Remarks: Tag [LinearizationTable] / [50712]
// Calculate bit limit
const uint8 m_unBitLimit = 0x01 << m_depth;
AutoPtr<dng_memory_block> oCurve(m_dngHost.Allocate(sizeof(uint8)*m_unBitLimit));
for (int32 i = 0; i < m_unBitLimit; i++) {
uint8 *pulItem = oCurve->Buffer_uint8() + i;
*pulItem = (uint8)(i);
}
m_pDngNegative->SetLinearization(oCurve);
// Set scale to square pixel
// Remarks: Tag [DefaultScale] / [50718]
m_pDngNegative->SetDefaultScale(dng_urational(1, 1), dng_urational(1, 1));
// Set pixel area
// Remarks: Tag [DefaultCropOrigin] / [50719]
m_pDngNegative->SetDefaultCropOrigin(0, 0);
// Set pixel area
// Remarks: Tag [DefaultCropSize] / [50720]
m_pDngNegative->SetDefaultCropSize(m_imageRect.W(), m_imageRect.H());
// Set active area
m_pDngNegative->SetActiveArea(m_imageRect);
m_pDngNegative->SetOriginalRawFileName("testdummi.bin");
m_pDngNegative->SetColorKeys(colorKeyRed, colorKeyGreen, colorKeyBlue);
// Set white LEVEL, value where the image is supposed to be white
m_pDngNegative->SetWhiteLevel((0x01 << m_depth) - 1); // 2^bpp -1
// Set black LEVEL, value where the image is supposed to be black
//m_pDngNegative->SetBlackLevel(1);
// Set baseline exposure
// Remarks: Tag [BaselineExposure] / [50730]
m_pDngNegative->SetBaselineExposure(0.0);
// Set if noise reduction is already applied on RAW data
// Remarks: Tag [NoiseReductionApplied] / [50935]
m_pDngNegative->SetNoiseReductionApplied(dng_urational(0, 1));
m_pDngNegative->SetAsShotProfileName("");
m_pDngNegative->SetBaselineNoise(1.0);
m_pDngNegative->SetBaselineSharpness(1.0);
m_pDngNegative->SetBaseOrientation(dng_orientation::Normal());
m_pDngNegative->SetLinearResponseLimit(1.0);
// Set camera neutral coordinates
// Remarks: Tag [AsShotNeutral] / [50728]
dng_vector pNeutral;
pNeutral.SetIdentity(3);
m_pDngNegative->SetCameraNeutral(pNeutral);
// ---------------------------------------------------------------------------------------------------------------
// DNG EXIF Settings
// ---------------------------------------------------------------------------------------------------------------
m_pDngExif = m_pDngNegative->GetExif();
// Set Camera Make
// Remarks: Tag [Make] / [EXIF]
m_pDngExif->fMake.Set_ASCII("PointGrey");
// Set Camera Model
// Remarks: Tag [Model] / [EXIF]
m_pDngExif->fModel.Set_ASCII("Grasshopper GS3-U3-41C6C-C");
// Set exposure time - Shutterspeed
// Remarks: Tag [ExposureTime] / [EXIF]
m_pDngExif->SetExposureTime(10.0 / 1000.0); // random exposure time
// Set ISO speed
// Remarks: Tag [ISOSpeed] / [EXIF]
m_pDngExif->fISOSpeedRatings[0] = 400; // ISO should be 400
m_pDngExif->fISOSpeedRatings[1] = 0;
m_pDngExif->fISOSpeedRatings[2] = 0;
// Set focal length
// Remarks: Tag [FocalLength] / [EXIF]
m_pDngExif->fFocalLength.Set_real64(7.0, 1000);
// Set lens info
// Remarks: Tag [LensInfo] / [EXIF]
m_pDngExif->fLensInfo[0].Set_real64(10.0, 10);
m_pDngExif->fLensInfo[1].Set_real64(10.0, 10);
m_pDngExif->fLensInfo[2].Set_real64(4.0, 10);
m_pDngExif->fLensInfo[3].Set_real64(4.0, 10);
m_pDngExif->fBrightnessValue = dng_srational(0, 0);
// Set WB mode
// Remarks: Tag [WhiteBalance] / [EXIF]
m_pDngExif->fWhiteBalance = 0;
// Set metering mode
// Remarks: Tag [MeteringMode] / [EXIF]
m_pDngExif->fMeteringMode = 2;
// Set metering mode
// Remarks: Tag [ExposureBiasValue] / [EXIF]
m_pDngExif->fExposureBiasValue = dng_srational(0, 0);
// Set aperture value
// Remarks: Tag [ApertureValue] / [EXIF]
m_pDngExif->SetFNumber(2.4); // sunex lens apeture
// Set Date time
// poExif->fDateTime();
// Set GPS value [Future]
// -------------------------------------------------------------
// DNG Profile Settings: Simple color calibration
// -------------------------------------------------------------
AutoPtr<dng_camera_profile> profile(new dng_camera_profile);
profile->SetName("MyCompany");
profile->SetCalibrationIlluminant1(lsD50);
// Excerpt from the DNG specification :
// ColorMatrix1 defines a transformation matrix that converts XYZ values to reference camera native color space values,
// under the first calibration illuminant.The matrix values are stored in row scan order.
dng_matrix_3by3 xyzToCam = dng_matrix_3by3(
3.13386, -1.61687, -0.49061,
-0.97877, 1.91614, 0.03345,
0.07195, -0.22899, 1.40524
);
profile->SetColorMatrix1(xyzToCam);
profile->SetCopyright("MyCompany");
profile->SetWasReadFromDNG(false);
m_pDngNegative->AddProfile(profile);
} catch (const dng_exception &except) {
return except.ErrorCode();
} catch (...) {
return dng_error_unknown;
}
return dng_error_none;
}
}
And this is the log of DNGValidate
Validating "000000.dng"...
Uses little-endian byte order
Magic number = 42
IFD 0: Offset = 8, Entries = 55
NewSubFileType: Main Image
ImageWidth: 2048
ImageLength: 2048
BitsPerSample: 8 8 8
Compression: Uncompressed
PhotometricInterpretation: CFA
Make: "PointGrey"
Model: "Grasshopper GS3-U3-41C6C-C"
StripOffsets: Offset = 6004
Orientation: 1 - 0th row is top, 0th column is left
SamplesPerPixel: 3
RowsPerStrip: 2048
StripByteCounts: Count = 12582912
PlanarConfiguration: 1
DateTime: 2018:03:01 17:53:32
XMP: Count = 4618, Offset = 738
XMP: <?xpacket begin="\357\273\277" id="W5M0MpCehiHzreSzNTczkc9d"?>
XMP: <x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="XMP Core 5.6.0">
XMP: <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
XMP: <rdf:Description rdf:about=""
XMP: xmlns:aux="http://ns.adobe.com/exif/1.0/aux/"
XMP: xmlns:xmp="http://ns.adobe.com/xap/1.0/"
XMP: aux:LensInfo="100/10 100/10 40/10 40/10"
XMP: aux:Lens="10.0 mm f/4.0"
XMP: xmp:ModifyDate="2018-03-01T17:53:32+01:00"
XMP: xmp:MetadataDate="2018-03-01T17:53:32+01:00"/>
XMP: </rdf:RDF>
XMP: </x:xmpmeta>
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XMP: <?xpacket end="w"?>
CFARepeatPatternDim: Rows = 2, Cols = 2
CFAPattern:
Green Blue
Red Green
ExifIFD: 5780
DNGVersion: 1.4.0.0
DNGBackwardVersion: 1.1.0.0
UniqueCameraModel: "Reality 7"
LocalizedCameraModel: "Grass hopper"
CFAPlaneColor: Red Green Blue
CFALayout: Rectangular (or square) layout
LinearizationTable:
BlackLevelRepeatDim: Rows = 1, Cols = 1
BlackLevel: 1.00 1.00 1.00
WhiteLevel: 255 255 255
DefaultScale: H = 1.0000 V = 1.0000
DefaultCropOrigin: H = 0.00 V = 0.00
DefaultCropSize: H = 2048.00 V = 2048.00
ColorMatrix1:
3.1339 -1.6169 -0.4906
-0.9788 1.9161 0.0335
0.0720 -0.2290 1.4052
AnalogBalance: 1.0000 1.0000 1.0000
AsShotNeutral: 1.0000 1.0000 1.0000
BaselineExposure: +0.00
BaselineNoise: 1.00
BaselineSharpness: 1.00
BayerGreenSplit: 0
LinearResponseLimit: 1.00
LensInfo: 10.0 mm f/4.0
AntiAliasStrength: 1.00
ShadowScale: 1.0000
CalibrationIlluminant1: D50
BestQualityScale: 1.0000
RawDataUniqueID: <000000000000000050068b0e9fed9be2>
OriginalRawFileName: "testdummi.bin"
ActiveArea: T = 0 L = 0 B = 2048 R = 2048
NoiseReductionApplied: 0/1
ProfileName: "Reality7"
ProfileEmbedPolicy: Allow copying
ProfileCopyright: "Reality7"
RawImageDigest: <da1dde5cd511616e7cec7ba6d70138b5>
OriginalDefaultFinalSize: H = 0 V = 0
OriginalDefaultCropSize: H = 0.00 V = 0.00
NextIFD = 0
Exif IFD: Offset = 5780, Entries = 11
ExposureTime: 1/100.0 sec
FNumber: f/2.40
ISOSpeedRatings: 400
ExifVersion: 2.30
ShutterSpeedValue: 1/100.0 sec
ApertureValue: f/2.40
MeteringMode: CenterWeightedAverage
FocalLength: 7.0 mm
WhiteBalance: Auto white balance
LensSpecificationExif: 10.0 mm f/4.0
LensModelExif: "10.0 mm f/4.0"
NextIFD = 0
*** Warning: Too little padding on left edge of CFA image (possible interpolation artifacts) ***
*** Warning: Too little padding on top edge of CFA image (possible interpolation artifacts) ***
*** Warning: Too little padding on right edge of CFA image (possible interpolation artifacts) ***
*** Warning: Too little padding on bottom edge of CFA image (possible interpolation artifacts) ***
Raw image read time: 0.013 sec
FindRawImageDigest time: 0.066 sec
Linearization time: 0.032 sec
Interpolate time: 0.067 sec
Validation complete
Thank you in advance! 
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