LibRaw 0.21 Release is just published in our Github repository and this site download section.

Changes are:

Camera format support

• Phase One/Leaf IIQ-S v2 support
• Canon CR3 filmrolls/RawBurst
• Canon CRM (movie) files
• Tiled bit-packed (and 16-bit unpacked) DNGs
• (non-standard) Deflate-compressed integer DNG files are allowed

Camera support

• Canon EOS R3, R7 and R10
• Fujifilm X-H2S, X-T30 II
• OM System OM-1
• Leica M11
• Sony A7-IV (ILCE-7M4)
• DJI Mavic 3
• Nikon Z9: standard compression formats only

Multiple (resultion) thumbnails support

• New imgdata.thumbs_list data item with data fields:
  int thumbcount: thumbnail count
  libraw_thumbnail_item_t thumblist[LIBRAW_THUMBNAIL_MAXCOUNT]: list of thumbnails
  libraw_thumbnail_item_t fields:
  enum LibRaw_internal_thumbnail_formats tformat: internal thumbnail format (this is not PPM/JPEG, but internal type related to thumbnail reading/unpacking method)
  ushort twidth, theight: thumbnail image size.
  ushort tflip: image rotation (see notes below)
  unsigned tlength: on-disk data size (not uncompressed for compressed formats)
  unsigned tmisc: bit depth and channel count: (color << 5) | bitsperpixel
  INT64 toffset: Thumbnail data offset in file
  
  Notes:
  • Only TIFF-based and CR3 files are parsed for thumbnail list, other formats will have thumbcount = 1 (or 0 if no thumbnail found in file).
  • Thumbnail image size may be unknown (not recorded in metadata), in this case twidth and theight are zero. Usually small(er) thumbnails will always have twidth/theight filled, while largest one may have these fields set to zero.
  • Thumbnail rotation (tflip) is filled only for TIFF-based RAWs (if Orientation tag is not present in IFD, default zero value is used) For non-tiff images, tflip is initialized to 0xffff (not known...)
  • There is no code to select thumbnail based on some criteria (e.g. minimal resolution), it is left to user to implement such a criteria, if needed (see unpack_thumb_ex() call below)
  • If you want to get largest possible thumbnail: just use old unpack_thumb() call to get it.
• new API call: LibRaw::unpack_thumb_ex(int i): Unpacks i-th thumbnail if it exists into imgdata.thumbnail structure i should be non-zero and less then imgdata.thumbs_list.thumbcount.
• samples/simple_dcraw.cpp: new -E command line switch to extract all thumbnails from input file(s)

(Experimental) RawSpeed "version 3" (develop branch) support

Build with -DUSE_RAWSPEED3, see details in RawSpeed3/README.md
LibRaw::capabilities will set bit LIBRAW_CAPS_RAWSPEED3 if compiled w/ RawSpeed-v3 support
If file was processed (or tried to process) via RawSpeed-v3, these bits are rised in imgdata.process_warnings:

• LIBRAW_WARN_RAWSPEED3_PROCESSED - processed via RawSpeed v3
• LIBRAW_WARN_RAWSPEED3_PROBLEM - not processed (due to exception in RawSpeed library)
• LIBRAW_WARN_RAWSPEED3_UNSUPPORTED - unsupported file
• LIBRAW_WARN_RAWSPEED3_NOTLISTED - file not listed in cameras.xml data

RawSpeed-v3 support is controlled via libraw_decoder_info.t->flags (LIBRAW_DECODER_TRYRAWSPEED3 bit). The bit is set for:

• lossless jpeg decoder
• Canon sRAW decoder
• lossless compressed and packed-compressed DNG decoders
• Pentax decoder
• Nikon (compressed) decoder
• Phase One Compressed and Hasselblad/Compressed decoders
• bitpacked decoder
• Panasonic (old 12-bit compression) decoder
• Olympus decoder
• Sony ARW (v1 and v2) decoders
• Samsung (version 1) decoder

(Experimental) Fine control of RawSpeed version selection/use

To enable, build LibRaw with -DUSE_RAWSPEED_BITS
LibRaw::capabilities will set bit LIBRAW_CAPS_RAWSPEED_BITS if compiled with this flag.
If enabled: imgdata.rawparams.use_rawspeed becomes bit-field (instead of 0/1 off/on) with bits:

• LIBRAW_RAWSPEEDV1_USE - use RawSpeed Version 1 (if compiled with)
• LIBRAW_RAWSPEEDV1_FAILONUNKNOWN - do not process unknown files (not listed in RawSpeed v1 camera definitions file)
• LIBRAW_RAWSPEEDV1_IGNOREERRORS - ignore mirror decoding errors (out of range data,etc)
• LIBRAW_RAWSPEEDV3_USE - Use RawSpeed Version 3 (if compiled with)
• LIBRAW_RAWSPEEDV3_FAILONUNKNOWN - do not process unknown files
• LIBRAW_RAWSPEEDV3_IGNOREERRORS - ignore minor decoding errors

Misc changes/improvements

• New compile time define LIBRAW_OWN_SWAB to use on platforms without swab() in C/C++ runtime
• New imgdata.rawparams.options bit: LIBRAW_RAWOPTIONS_CANON_IGNORE_MAKERNOTES_ROTATION
  If set: image orientation is set based on TIFF/IFD0:Orientation tag, makernotes orientation data is ignored
• Nikon makernotes: read NEFCompression tag for HE/HE* files
• Nikon orientation tag: more fixed offsets for known cameras
• Adobe DNG SDK 1.6 support (meaning, just an additional patch for GPR SDK)
• Removed LibRaw::memerr(), memory allocation failures are already handled in LibRaw_memmgr::*alloc w/ exception thrown
• Removed memory error callback, out-of-memory error should be handled via returned error code check, all related parameters (e.g. LibRaw constructor option to not set such callback) is also removed
• imgdata.params.adjust_maximum_thr is settable via C-API libraw_set_adjust_maximum_thr(..)
• New rawoptions/processing flags for DNG processing if compiled with Adobe DNG SDK:
  LIBRAW_RAWOPTIONS_DNG_STAGE2_IFPRESENT,LIBRAW_RAWOPTIONS_DNG_STAGE3_IFPRESENT If these flag(s) are set: Stage2/Stage3 processing will be performed only if OpcodeList2/OpcodeList3 tags are present in the input DNG file Old (hard) flags (LIBRAW_RAWOPTIONS_DNG_STAGE2 and LIBRAW_RAWOPTIONS_DNG_STAGE3) are not removed and will force Stage2/3 processing if set (regardless of input file tags)
• New imgdata.rawparams.options bit: LIBRAW_RAWOPTIONS_DNG_ADD_MASKS If set: DNG Transparency Masks will be extracted (if selected via shot_select)
• New decoder flag: LIBRAW_DECODER_UNSUPPORTED_FORMAT

Bugs fixed

• Fixed possible out-of-buffer read in Nikon orientation tag parser
• Windows datastream: fixed logic errors (not showing up in real life)
• Out-of-range read-only array access in postprocessing if output_color is set to 0 (raw color)
• Minolta Z2 was not recognized correctly on 32-bit systems
• Fixed possible buffer overflow in Kodak C330 decoder
• dcraw_process(): check for buffer allocation results to avoid NULL deref