File indexing completed on 2025-01-05 03:57:11

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2008-10-09
  * Description : internal private container for DRawDecoder
  *
  * SPDX-FileCopyrightText: 2008-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "drawdecoder_p.h"
 
 // Qt includes
 
 #include <QString>
 #include <QScopedPointer>
 
 // DNG SDK includes
 
 #ifdef USE_DNGSDK
 #   include "dng_host.h"
 #endif
 
 // Local includes
 
 #include "metaengine.h"
 
 namespace Digikam
 {
 
 int s_progressCallbackForLibRaw(void* context, enum LibRaw_progress p, int iteration, int expected)
 {
     if (context)
     {
         DRawDecoder::Private* const d = static_cast<DRawDecoder::Private*>(context);
 
         return d->progressCallback(p, iteration, expected);
     }
 
     return 0;
 }
 
 void s_exifParserCallbackForLibRaw(void* context, int tag, int type, int len, unsigned int ord, void* ifp, INT64 base)
 {
     if (context)
     {
         DRawDecoder::Private* const d = static_cast<DRawDecoder::Private*>(context);
         d->exifParserCallback(tag, type, len, ord, ifp, base);
     }
 }
 
 // --------------------------------------------------------------------------------------------------
 
 DRawDecoder::Private::Private(DRawDecoder* const p)
     : m_progress(0.0),
       m_parent  (p)
 {
 }
 
 DRawDecoder::Private::~Private()
 {
 }
 
 void DRawDecoder::Private::createPPMHeader(QByteArray& imgData, libraw_processed_image_t* const img)
 {
     QString header = QString::fromUtf8("P%1\n%2 %3\n%4\n").arg((img->colors == 3) ? QLatin1String("6") : QLatin1String("5"))
                                                           .arg(img->width)
                                                           .arg(img->height)
                                                           .arg((1 << img->bits)-1);
     imgData.append(header.toLatin1());
     imgData.append(QByteArray((const char*)img->data, (int)img->data_size));
 }
 
 int DRawDecoder::Private::progressCallback(enum LibRaw_progress p, int iteration, int expected)
 {
     qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw progress:" << libraw_strprogress(p) << "pass"
                                    << iteration << "of" << expected;
 
     // post a little change in progress indicator to show raw processor activity.
 
     setProgress(progressValue() + 0.01);
 
     // Clean processing termination by user...
 
     if (m_parent->checkToCancelWaitingData())
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw process terminaison invoked...";
         m_parent->m_cancel = true;
         m_progress         = 0.0;
 
         return 1;
     }
 
     // Return 0 to continue processing...
 
     return 0;
 }
 
 void DRawDecoder::Private::exifParserCallback(int tag, int type, int len, unsigned int ord, void* ifp, INT64 base)
 {
     // Note: see https://github.com/LibRaw/LibRaw/issues/323 for details
 
     qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw Exif Parser:"
                                    << "tag:"  << tag
                                    << "type:" << type
                                    << "len:"  << len
                                    << "ord:"  << ord
                                    << "ifp:"  << ifp
                                    << "base:" << base;
 }
 
 void DRawDecoder::Private::setProgress(double value)
 {
     m_progress = value;
     m_parent->setWaitingDataProgress(m_progress);
 }
 
 double DRawDecoder::Private::progressValue() const
 {
     return m_progress;
 }
 
 void DRawDecoder::Private::fillIndentifyInfo(LibRaw* const raw, DRawInfo& identify)
 {
     identify.dateTime.setSecsSinceEpoch(raw->imgdata.other.timestamp);
     identify.make                  = QString::fromUtf8(raw->imgdata.idata.make);
     identify.model                 = QString::fromUtf8(raw->imgdata.idata.model);
     identify.owner                 = QString::fromUtf8(raw->imgdata.other.artist);
     identify.software              = QString::fromUtf8(raw->imgdata.idata.software);
     identify.firmware              = QString::fromUtf8(raw->imgdata.color.model2);
     identify.description           = QString::fromUtf8(raw->imgdata.other.desc);
     identify.serialNumber          = raw->imgdata.other.shot_order;
     identify.DNGVersion            = QString::number(raw->imgdata.idata.dng_version);
     identify.uniqueCameraModel     = QString::fromUtf8(raw->imgdata.color.UniqueCameraModel);
     identify.localizedCameraModel  = QString::fromUtf8(raw->imgdata.color.LocalizedCameraModel);
     identify.imageID               = QString::fromUtf8(raw->imgdata.color.ImageUniqueID);
     identify.rawDataUniqueID       = QString::fromUtf8(raw->imgdata.color.RawDataUniqueID);
     identify.originalRawFileName   = QString::fromUtf8(raw->imgdata.color.RawDataUniqueID);
     identify.model                 = QString::fromUtf8(raw->imgdata.idata.model);
     identify.sensitivity           = raw->imgdata.other.iso_speed;
     identify.exposureTime          = raw->imgdata.other.shutter;
     identify.aperture              = raw->imgdata.other.aperture;
     identify.focalLength           = raw->imgdata.other.focal_len;
 
     identify.hasGpsInfo            = (raw->imgdata.other.parsed_gps.gpsparsed == 1) ? true : false;
     identify.latitude              = MetaEngine::convertDegreeAngleToDouble(raw->imgdata.other.parsed_gps.latitude[0],
                                                                             raw->imgdata.other.parsed_gps.latitude[1],
                                                                             raw->imgdata.other.parsed_gps.latitude[2]);
     identify.longitude             = MetaEngine::convertDegreeAngleToDouble(raw->imgdata.other.parsed_gps.longitude[0],
                                                                             raw->imgdata.other.parsed_gps.longitude[1],
                                                                             raw->imgdata.other.parsed_gps.longitude[2]);
     identify.altitude              = raw->imgdata.other.parsed_gps.altitude;
     identify.imageSize             = QSize(raw->imgdata.sizes.width,      raw->imgdata.sizes.height);
     identify.fullSize              = QSize(raw->imgdata.sizes.raw_width,  raw->imgdata.sizes.raw_height);
     identify.outputSize            = QSize(raw->imgdata.sizes.iwidth,     raw->imgdata.sizes.iheight);
     identify.thumbSize             = QSize(raw->imgdata.thumbnail.twidth, raw->imgdata.thumbnail.theight);
     identify.topMargin             = raw->imgdata.sizes.top_margin;
     identify.leftMargin            = raw->imgdata.sizes.left_margin;
     identify.hasIccProfile         = raw->imgdata.color.profile ? true : false;
     identify.isDecodable           = true;
     identify.pixelAspectRatio      = raw->imgdata.sizes.pixel_aspect;
     identify.baselineExposure      = raw->imgdata.color.dng_levels.baseline_exposure;
 
     identify.ambientTemperature    = raw->imgdata.makernotes.common.exifAmbientTemperature;
     identify.ambientHumidity       = raw->imgdata.makernotes.common.exifHumidity;
     identify.ambientPressure       = raw->imgdata.makernotes.common.exifPressure;
     identify.ambientWaterDepth     = raw->imgdata.makernotes.common.exifWaterDepth;
     identify.ambientAcceleration   = raw->imgdata.makernotes.common.exifAcceleration;
     identify.ambientElevationAngle = raw->imgdata.makernotes.common.exifCameraElevationAngle;
 
     identify.exposureIndex         = raw->imgdata.makernotes.common.exifExposureIndex;
     identify.flashUsed             = (int)raw->imgdata.color.flash_used;
     identify.meteringMode          = raw->imgdata.shootinginfo.MeteringMode;
     identify.exposureProgram       = raw->imgdata.shootinginfo.ExposureProgram;
 
     identify.rawColors             = raw->imgdata.idata.colors;
     identify.rawImages             = raw->imgdata.idata.raw_count;
     identify.blackPoint            = raw->imgdata.color.black;
 
     for (int ch = 0 ; ch < 4 ; ++ch)
     {
         identify.blackPointCh[ch]  = raw->imgdata.color.cblack[ch];
     }
 
     identify.whitePoint            = raw->imgdata.color.maximum;
     identify.orientation           = (DRawInfo::ImageOrientation)raw->imgdata.sizes.flip;
 
     memcpy(&identify.cameraColorMatrix1, &raw->imgdata.color.cmatrix, sizeof(raw->imgdata.color.cmatrix));
     memcpy(&identify.cameraColorMatrix2, &raw->imgdata.color.rgb_cam, sizeof(raw->imgdata.color.rgb_cam));
     memcpy(&identify.cameraXYZMatrix,    &raw->imgdata.color.cam_xyz, sizeof(raw->imgdata.color.cam_xyz));
 
     if (raw->imgdata.idata.filters)
     {
         if (!raw->imgdata.idata.cdesc[3])
         {
             raw->imgdata.idata.cdesc[3] = 'G';
         }
 
         for (int i = 0 ; i < 16 ; ++i)
         {
             identify.filterPattern.append(QLatin1Char(raw->imgdata.idata.cdesc[raw->COLOR(i >> 1, i & 1)]));
         }
 
         identify.colorKeys         = QLatin1String(raw->imgdata.idata.cdesc);
     }
 
     for (int c = 0 ; c < raw->imgdata.idata.colors ; ++c)
     {
         identify.daylightMult[c]   = raw->imgdata.color.pre_mul[c];
     }
 
     if (raw->imgdata.color.cam_mul[0] > 0)
     {
         for (int c = 0 ; c < 4 ; ++c)
         {
             identify.cameraMult[c] = raw->imgdata.color.cam_mul[c];
         }
     }
 
     identify.xmpData               = QByteArray(raw->imgdata.idata.xmpdata, raw->imgdata.idata.xmplen);
 
     if (identify.hasIccProfile)
     {
         identify.iccData           = QByteArray((char*)raw->imgdata.color.profile, raw->imgdata.color.profile_length);
     }
 
     if (raw->imgdata.thumbnail.tformat != LIBRAW_THUMBNAIL_UNKNOWN)
     {
         identify.thumbnail         = QByteArray((char*)raw->imgdata.thumbnail.thumb, raw->imgdata.thumbnail.tlength);
     }
 
     identify.lensModel             = QString::fromUtf8(raw->imgdata.lens.Lens);
     identify.lensMake              = QString::fromUtf8(raw->imgdata.lens.LensMake);
     identify.lensSerial            = QString::fromUtf8(raw->imgdata.lens.LensSerial);
     identify.focalLengthIn35mmFilm = raw->imgdata.lens.FocalLengthIn35mmFormat;
     identify.maxAperture           = raw->imgdata.lens.EXIF_MaxAp;
 }
 
 bool DRawDecoder::Private::loadFromLibraw(const QString& filePath, QByteArray& imageData,
                                           int& width, int& height, int& rgbmax)
 {
     m_parent->m_cancel       = false;
     LibRaw* const raw        = new LibRaw;
 
     // Set progress call back function.
 
     raw->set_progress_handler(s_progressCallbackForLibRaw, this);
     raw->set_exifparser_handler(s_exifParserCallbackForLibRaw, this);
 
     QByteArray deadpixelPath = QFile::encodeName(m_parent->m_decoderSettings.deadPixelMap);
     QByteArray cameraProfile = QFile::encodeName(m_parent->m_decoderSettings.inputProfile);
     QByteArray outputProfile = QFile::encodeName(m_parent->m_decoderSettings.outputProfile);
 
     if (!m_parent->m_decoderSettings.autoBrightness)
     {
         // Use a fixed white level, ignoring the image histogram.
 
         raw->imgdata.params.no_auto_bright = 1;
     }
 
     if (m_parent->m_decoderSettings.sixteenBitsImage)
     {
         // (-4) 16bit ppm output
 
         raw->imgdata.params.output_bps = 16;
     }
 
     if (m_parent->m_decoderSettings.halfSizeColorImage)
     {
         // (-h) Half-size color image (3x faster than -q).
 
         raw->imgdata.params.half_size = 1;
     }
 
     if (m_parent->m_decoderSettings.RGBInterpolate4Colors)
     {
         // (-f) Interpolate RGB as four colors.
 
         raw->imgdata.params.four_color_rgb = 1;
     }
 
     if (m_parent->m_decoderSettings.DontStretchPixels)
     {
         // (-j) Do not stretch the image to its correct aspect ratio.
 
         raw->imgdata.params.use_fuji_rotate = 1;
     }
 
     // (-H) Unclip highlight color.
 
     raw->imgdata.params.highlight = m_parent->m_decoderSettings.unclipColors;
 
     if (m_parent->m_decoderSettings.brightness != 1.0)
     {
         // (-b) Set Brightness value.
 
         raw->imgdata.params.bright = m_parent->m_decoderSettings.brightness;
     }
 
     if (m_parent->m_decoderSettings.enableBlackPoint)
     {
         // (-k) Set Black Point value.
 
         raw->imgdata.params.user_black = m_parent->m_decoderSettings.blackPoint;
     }
 
     if (m_parent->m_decoderSettings.enableWhitePoint)
     {
         // (-S) Set White Point value (saturation).
 
         raw->imgdata.params.user_sat = m_parent->m_decoderSettings.whitePoint;
     }
 
     if (m_parent->m_decoderSettings.medianFilterPasses > 0)
     {
         // (-m) After interpolation, clean up color artifacts by repeatedly applying a 3x3 median filter to the R-G and B-G channels.
 
         raw->imgdata.params.med_passes = m_parent->m_decoderSettings.medianFilterPasses;
     }
 
     if (!m_parent->m_decoderSettings.deadPixelMap.isEmpty())
     {
         // (-P) Read the dead pixel list from this file.
 
         raw->imgdata.params.bad_pixels = deadpixelPath.data();
     }
 
     switch (m_parent->m_decoderSettings.whiteBalance)
     {
         case DRawDecoderSettings::NONE:
         {
             break;
         }
 
         case DRawDecoderSettings::CAMERA:
         {
             // (-w) Use camera white balance, if possible.
 
             raw->imgdata.params.use_camera_wb = 1;
             break;
         }
 
         case DRawDecoderSettings::AUTO:
         {
             // (-a) Use automatic white balance.
 
             raw->imgdata.params.use_auto_wb = 1;
             break;
         }
 
         case DRawDecoderSettings::CUSTOM:
         {
             /*
              * Convert between Temperature and RGB.
              */
             double RGB[3]            = { 0.0 };
             double xD                = 0.0;
             double yD                = 0.0;
             double X                 = 0.0;
             double Y                 = 0.0;
             double Z                 = 0.0;
             double T                 = m_parent->m_decoderSettings.customWhiteBalance;
             QScopedPointer<DRawInfo> identify(new DRawInfo);
 
             // -----------------------------------------------------------------------
             // Here starts the code picked and adapted from ufraw (0.12.1)
             // to convert Temperature + green multiplier to RGB multipliers
 
             /*
              * Convert between Temperature and RGB.
              * Base on information from www.brucelindbloom.com/
              * The fit for D-illuminant between 4000K and 12000K are from CIE
              * The generalization to 2000K < T < 4000K and the blackbody fits
              * are my own and should be taken with a grain of salt.
              */
             const double XYZ_to_RGB[3][3] = {
                                                 { 3.24071,  -0.969258,  0.0556352 },
                                                 {-1.53726,  1.87599,    -0.203996 },
                                                 {-0.498571, 0.0415557,  1.05707   }
                                             };
 
             // Fit for CIE Daylight illuminant
 
             if      (T <= 4000)
             {
                 xD = 0.27475e9/(T*T*T) - 0.98598e6/(T*T) + 1.17444e3/T + 0.145986;
             }
             else if (T <= 7000)
             {
                 xD = -4.6070e9/(T*T*T) + 2.9678e6/(T*T) + 0.09911e3/T + 0.244063;
             }
             else
             {
                 xD = -2.0064e9/(T*T*T) + 1.9018e6/(T*T) + 0.24748e3/T + 0.237040;
             }
 
             yD     = -3 * xD * xD + 2.87 * xD - 0.275;
             X      = xD / yD;
             Y      = 1;
             Z      = (1 - xD - yD) / yD;
             RGB[0] = X*XYZ_to_RGB[0][0] + Y*XYZ_to_RGB[1][0] + Z*XYZ_to_RGB[2][0];
             RGB[1] = X*XYZ_to_RGB[0][1] + Y*XYZ_to_RGB[1][1] + Z*XYZ_to_RGB[2][1];
             RGB[2] = X*XYZ_to_RGB[0][2] + Y*XYZ_to_RGB[1][2] + Z*XYZ_to_RGB[2][2];
 
             // End of the code picked to ufraw
             // -----------------------------------------------------------------------
 
             RGB[1] = RGB[1] / m_parent->m_decoderSettings.customWhiteBalanceGreen;
 
             /*
              * By default, decraw override his default D65 WB
              * We need to keep it as a basis : if not, colors with some
              * DSLR will have a high dominant of color that will lead to
              * a completely wrong WB
              */
             if (rawFileIdentify(*identify, filePath))
             {
                 RGB[0] = identify->daylightMult[0] / RGB[0];
                 RGB[1] = identify->daylightMult[1] / RGB[1];
                 RGB[2] = identify->daylightMult[2] / RGB[2];
             }
             else
             {
                 RGB[0] = 1.0 / RGB[0];
                 RGB[1] = 1.0 / RGB[1];
                 RGB[2] = 1.0 / RGB[2];
                 qCDebug(DIGIKAM_RAWENGINE_LOG) << "Warning: cannot get daylight multipliers";
             }
 
             // (-r) set Raw Color Balance Multipliers.
 
             raw->imgdata.params.user_mul[0] = RGB[0];
             raw->imgdata.params.user_mul[1] = RGB[1];
             raw->imgdata.params.user_mul[2] = RGB[2];
             raw->imgdata.params.user_mul[3] = RGB[1];
             break;
         }
 
         case DRawDecoderSettings::AERA:
         {
             // (-A) Calculate the white balance by averaging a rectangular area from image.
 
             raw->imgdata.params.greybox[0] = m_parent->m_decoderSettings.whiteBalanceArea.left();
             raw->imgdata.params.greybox[1] = m_parent->m_decoderSettings.whiteBalanceArea.top();
             raw->imgdata.params.greybox[2] = m_parent->m_decoderSettings.whiteBalanceArea.width();
             raw->imgdata.params.greybox[3] = m_parent->m_decoderSettings.whiteBalanceArea.height();
             break;
         }
     }
 
     // (-q) Use an interpolation method.
 
     raw->imgdata.params.user_qual = m_parent->m_decoderSettings.RAWQuality;
 
     switch (m_parent->m_decoderSettings.NRType)
     {
         case DRawDecoderSettings::WAVELETSNR:
         {
             // (-n) Use wavelets to erase noise while preserving real detail.
 
             raw->imgdata.params.threshold    = m_parent->m_decoderSettings.NRThreshold;
             break;
         }
 
         case DRawDecoderSettings::FBDDNR:
         {
             // (100 - 1000) => (1 - 10) conversion
 
             raw->imgdata.params.fbdd_noiserd = lround(m_parent->m_decoderSettings.NRThreshold / 100.0);
             break;
         }
 
         default:   // No Noise Reduction
         {
             raw->imgdata.params.threshold    = 0;
             raw->imgdata.params.fbdd_noiserd = 0;
             break;
         }
     }
 
     // Exposure Correction before interpolation.
 
     raw->imgdata.params.exp_correc = m_parent->m_decoderSettings.expoCorrection;
     raw->imgdata.params.exp_shift  = m_parent->m_decoderSettings.expoCorrectionShift;
     raw->imgdata.params.exp_preser = m_parent->m_decoderSettings.expoCorrectionHighlight;
 
     switch (m_parent->m_decoderSettings.inputColorSpace)
     {
         case DRawDecoderSettings::EMBEDDED:
         {
             // (-p embed) Use input profile from RAW file to define the camera's raw colorspace.
 
             raw->imgdata.params.camera_profile = (char*)"embed";
             break;
         }
 
         case DRawDecoderSettings::CUSTOMINPUTCS:
         {
             if (!m_parent->m_decoderSettings.inputProfile.isEmpty())
             {
                 // (-p) Use input profile file to define the camera's raw colorspace.
 
                 raw->imgdata.params.camera_profile = cameraProfile.data();
             }
 
             break;
         }
 
         default:
         {
             // No input profile
 
             break;
         }
     }
 
     switch (m_parent->m_decoderSettings.outputColorSpace)
     {
         case DRawDecoderSettings::CUSTOMOUTPUTCS:
         {
             if (!m_parent->m_decoderSettings.outputProfile.isEmpty())
             {
                 // (-o) Use ICC profile file to define the output colorspace.
 
                 raw->imgdata.params.output_profile = outputProfile.data();
             }
 
             break;
         }
 
         default:
         {
             // (-o) Define the output colorspace.
 
             raw->imgdata.params.output_color = m_parent->m_decoderSettings.outputColorSpace;
             break;
         }
     }
 
     //-- Extended demosaicing settings ----------------------------------------------------------
 
     raw->imgdata.params.dcb_iterations = m_parent->m_decoderSettings.dcbIterations;
     raw->imgdata.params.dcb_enhance_fl = m_parent->m_decoderSettings.dcbEnhanceFl;
 
 #ifdef USE_DNGSDK
 
     qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: setup internal DNG SDK";
 
     raw->imgdata.rawparams.use_dngsdk = LIBRAW_DNG_ALL;
     dng_host* const dnghost           = new dng_host;
     raw->set_dng_host(dnghost);
 
 #endif
 
     //-------------------------------------------------------------------------------------------
 
     setProgress(0.1);
 
     qCDebug(DIGIKAM_RAWENGINE_LOG) << filePath;
     qCDebug(DIGIKAM_RAWENGINE_LOG) << m_parent->m_decoderSettings;
 
 #ifdef Q_OS_WIN
 
     int ret = raw->open_file((const wchar_t*)filePath.utf16());
 
 #else
 
     int ret = raw->open_file(filePath.toUtf8().constData());
 
 #endif
 
     if (ret != LIBRAW_SUCCESS)
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: failed to run open_file: " << libraw_strerror(ret);
         raw->recycle();
         delete raw;
 
 #ifdef USE_DNGSDK
 
         delete dnghost;
 
 #endif
 
         return false;
     }
 
     if (m_parent->m_cancel)
     {
         raw->recycle();
         delete raw;
 
 #ifdef USE_DNGSDK
 
         delete dnghost;
 
 #endif
 
         return false;
     }
 
     setProgress(0.2);
 
     ret = raw->unpack();
 
     if (ret != LIBRAW_SUCCESS)
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: failed to run unpack: " << libraw_strerror(ret);
         raw->recycle();
         delete raw;
 
 #ifdef USE_DNGSDK
 
         delete dnghost;
 
 #endif
 
         return false;
     }
 
     if (m_parent->m_cancel)
     {
         raw->recycle();
         delete raw;
 
 #ifdef USE_DNGSDK
 
         delete dnghost;
 
 #endif
 
         return false;
     }
 
     setProgress(0.25);
 
     if (m_parent->m_decoderSettings.fixColorsHighlights)
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "Applying LibRaw highlights adjustments";
 
         // 1.0 is fallback to default value
 
         raw->imgdata.params.adjust_maximum_thr = 1.0;
     }
     else
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "Disabling LibRaw highlights adjustments";
 
         // 0.0 disables this feature
 
         raw->imgdata.params.adjust_maximum_thr = 0.0;
     }
 
     ret = raw->dcraw_process();
 
     if (ret != LIBRAW_SUCCESS)
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: failed to run dcraw_process: " << libraw_strerror(ret);
         raw->recycle();
         delete raw;
 
 #ifdef USE_DNGSDK
 
         delete dnghost;
 
 #endif
 
         return false;
     }
 
     if (m_parent->m_cancel)
     {
         raw->recycle();
         delete raw;
 
 #ifdef USE_DNGSDK
 
         delete dnghost;
 
 #endif
 
         return false;
     }
 
     setProgress(0.3);
 
     libraw_processed_image_t* img = raw->dcraw_make_mem_image(&ret);
 
     if (!img)
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: failed to run dcraw_make_mem_image: " << libraw_strerror(ret);
         raw->recycle();
         delete raw;
 
 #ifdef USE_DNGSDK
 
         delete dnghost;
 
 #endif
 
         return false;
     }
 
     if (m_parent->m_cancel)
     {
         // Clear memory allocation. Introduced with LibRaw 0.11.0
 
         raw->dcraw_clear_mem(img);
         raw->recycle();
         delete raw;
 
 #ifdef USE_DNGSDK
 
         delete dnghost;
 
 #endif
 
         return false;
     }
 
     setProgress(0.35);
 
     width  = img->width;
     height = img->height;
     rgbmax = (1 << img->bits)-1;
 
     if (img->colors == 3)
     {
         imageData = QByteArray((const char*)img->data, (int)img->data_size);
     }
     else
     {
         // img->colors == 1 (Grayscale) : convert to RGB
 
         imageData = QByteArray();
 
         for (int i = 0 ; i < (int)img->data_size ; ++i)
         {
             for (int j = 0 ; j < 3 ; ++j)
             {
                 imageData.append(img->data[i]);
             }
         }
     }
 
     // Clear memory allocation. Introduced with LibRaw 0.11.0
 
     raw->dcraw_clear_mem(img);
     raw->recycle();
     delete raw;
 
 #ifdef USE_DNGSDK
 
     delete dnghost;
 
 #endif
 
     if (m_parent->m_cancel)
     {
         return false;
     }
 
     setProgress(0.4);
 
     qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: data info: width=" << width
                                    << " height=" << height
                                    << " rgbmax=" << rgbmax;
 
     return true;
 }
 
 bool DRawDecoder::Private::loadEmbeddedPreview(QByteArray& imgData, LibRaw* const raw)
 {
     int ret = raw->unpack_thumb();
 
     if (ret != LIBRAW_SUCCESS)
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: failed to run unpack_thumb: " << libraw_strerror(ret);
         raw->recycle();
         delete raw;
 
         return false;
     }
 
     libraw_processed_image_t* const thumb = raw->dcraw_make_mem_thumb(&ret);
 
     if (!thumb)
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: failed to run dcraw_make_mem_thumb: " << libraw_strerror(ret);
         raw->recycle();
         delete raw;
 
         return false;
     }
 
     if (thumb->type == LIBRAW_IMAGE_BITMAP)
     {
         createPPMHeader(imgData, thumb);
     }
     else
     {
         imgData = QByteArray((const char*)thumb->data, (int)thumb->data_size);
     }
 
     // Clear memory allocation. Introduced with LibRaw 0.11.0
 
     raw->dcraw_clear_mem(thumb);
     raw->recycle();
     delete raw;
 
     if (imgData.isEmpty())
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "Failed to load JPEG thumb from LibRaw!";
         return false;
     }
 
     return true;
 }
 
 bool DRawDecoder::Private::loadHalfPreview(QImage& image, LibRaw* const raw, bool rotate)
 {
     raw->imgdata.params.use_auto_wb   = 1;         // Use automatic white balance.
     raw->imgdata.params.use_camera_wb = 1;         // Use camera white balance, if possible.
     raw->imgdata.params.half_size     = 1;         // Half-size color image (3x faster than -q).
 
     if (!rotate)
     {
         raw->imgdata.params.user_flip = 0;
     }
 
 #ifdef USE_DNGSDK
 
     qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: setup internal DNG SDK";
 
     raw->imgdata.rawparams.use_dngsdk = LIBRAW_DNG_ALL;
     dng_host* const dnghost           = new dng_host;
     raw->set_dng_host(dnghost);
 
 #endif
 
     QByteArray imgData;
 
     int ret = raw->unpack();
 
     if (ret != LIBRAW_SUCCESS)
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: failed to run unpack: " << libraw_strerror(ret);
         raw->recycle();
         delete raw;
 
 #ifdef USE_DNGSDK
 
         delete dnghost;
 
 #endif
 
         return false;
     }
 
     ret = raw->dcraw_process();
 
     if (ret != LIBRAW_SUCCESS)
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: failed to run dcraw_process: " << libraw_strerror(ret);
         raw->recycle();
         delete raw;
 
 #ifdef USE_DNGSDK
 
         delete dnghost;
 
 #endif
 
         return false;
     }
 
     libraw_processed_image_t* halfImg = raw->dcraw_make_mem_image(&ret);
 
     if (!halfImg)
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "LibRaw: failed to run dcraw_make_mem_image: " << libraw_strerror(ret);
         raw->recycle();
         delete raw;
 
 #ifdef USE_DNGSDK
 
         delete dnghost;
 
 #endif
 
         return false;
     }
 
     Private::createPPMHeader(imgData, halfImg);
 
     // Clear memory allocation. Introduced with LibRaw 0.11.0
 
     raw->dcraw_clear_mem(halfImg);
     raw->recycle();
     delete raw;
 
 #ifdef USE_DNGSDK
 
     delete dnghost;
 
 #endif
 
     if (imgData.isEmpty())
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "Failed to load half preview from LibRaw!";
         return false;
     }
 
     if (!image.loadFromData(imgData))
     {
         qCDebug(DIGIKAM_RAWENGINE_LOG) << "Failed to load PPM data from LibRaw!";
         return false;
     }
 
     return true;
 }
 
 } // namespace Digikam