LibRaw 0.18 released and available on download page and in Github repository.

Changes (relative to 0.17)

Licensing changes:

• there is no 'LibRaw Software License 27032010' licensing anymore (and all signed agreements have expired)
• LibRaw now dual-licensed: LGPL 2.1 or CDDL 1.0

Camera support (+87):

• Apple: iPad Pro, iPhone SE, iPhone 6s, iPhone 6 plus, iPhone 7, iPhone 7 plus
• BlackMagic Micro Cinema Camera, URSA, URSA Mini
• Canon PowerShot G5 X, PowerShot G7 X Mark II, PowerShot G9 X, IXUS 160 (CHDK hack), EOS 5D Mark IV, EOS 80D, EOS 1300D, EOS M10, EOS M5, EOS-1D X Mark II
• Casio EX-ZR4000/5000
• DXO One,
• FujiFilm X-Pro2, X70, X-E2S, X-T2
• Gione E7
• GITUP GIT2
• Google Pixel,Pixel XL
• Hasselblad X1D, True Zoom
• HTC MyTouch 4G, One (A9), One (M9), 10
• Huawei P9
• Leica M (Typ 262), M-D (Typ 262), S (Typ 007), SL (Typ 601), X-U (Typ 113), TL
• LG G3, G4
• Meizy MX4
• Nikon D5, D500, D3400
• Olympus E-PL8, E-M10 Mark II, Pen F, SH-3, E-M1-II
• Panasonic DMC-G8/80/81/85, DMC-GX80/85, DMC-TZ80/81/85/ZS60, DMC-TZ100/101/ZS100,DMC-LX9/10/15, FZ2000/FZ2500
• Pentax K-1, K-3 II, K-70
• PhaseOne IQ3 100MP
• RaspberryPi Camera, Camera V2
• Ricoh GR II
• Samsung Galaxy S7, S7 Edge
• Sigma sd Quattro
• Sony A7S II, ILCA-68 (A68),ILCE-6300,DSC-RX1R II,DSC-RX10III, DSC-RX100V,ILCA-99M2 (A99-II), a6500, IMX214, IMX219, IMX230, IMX298-mipi 16mp, IMX219-mipi 8mp, Xperia L
• PtGrey GRAS-50S5C
• YUNEEC CGO4
• Xiaomi MI3, RedMi Note3 Pro

Floating point DNG support:

• new data fields:
  imgdata.rawdata.float_image - bayer float data
  imgdata.rawdata.float3_image - 3-component float data
  imgdata.rawdata.float4_image - 4-component float data
  imgdata.color.fmaximum - float data maximum (calculated from real data, rounded to 1.0 if below 1.0)
• new raw processing flag
  LIBRAW_PROCESSING_CONVERTFLOAT_TO_INT - converts float data to 16-bit integer immediately after decoding with default parameters
• new API Calls:
  int LibRaw::is_floating_point() returns non-zero if RAW file contains floating point data
  int LibRaw::have_fpdata() returns non-zero if rawdata.float*_image is not null (so FP data has been unpacked but not converted to integrer, see below).
  LibRaw::convertFloatToInt(float dmin=4096.f, float dmax=32767.f, float dtarget = 16383.f) converts float/float3/float4_image to raw_image/color3/color4_image with or without scaling:
  - if both real data maximum and metadata maximum are within the range ( >= dmin && <=dmax), float data is just converted to integer
  - if data is out of the range given above, values are scaled so real data maximum becomes dtarget
  - if data was rescaled (normalized), scale multiplier is stored in imgdata.color.fnorm

Other

• LibRaw can be built with Adobe DNG SDK support to decode exotic DNG formats (e.g. 8 bit). See README.DNGSDK.txt for details
• New API calls
  unsigned LibRaw::capabilities and C-API libraw_capabilities() allows developers to determine LibRaw compile flags at runtime.
  Returns ORed bit fields:
  LIBRAW_CAPS_RAWSPEED - LibRaw was compiled with RawSpeed Support
  LIBRAW_CAPS_DNGSDK - LibRaw was compiled with Adobe DNG SDK
  LIBRAW_CAPS_DEMOSAICSGPL2, LIBRAW_CAPS_DEMOSAICSGPL3 - LibRaw was compiled with demosaic packs (GPL2/GPL3)
• More metadata parsed:
  • White balance coefficients stored in the raw file are extracted into:
    int imgdata.color.WBCoeffs[256][4] - array indexed by EXIF lightsource type for example, WBCoeffs[21][..] contains coefficients for D65 lightsource
    float imgdata.color.WBCT_Coeffs[64][5] contains white balance data specified for given color temperature: WBCT_Coeffs[i][0] contains temperature value, and [1]..[4] are WB coefficients.
  • DNG analog balance, per-channel black/white level, and forward matrix
  • vendor specific metadata stored in vendor-specific data structures
• new C-API calls:
  void libraw_set_user_mul(libraw_data_t *lr,int index, float val);
  void libraw_set_ca_correction(libraw_data_t *lr,int ca_correc, float ca_red, float ca_blue);
  void libraw_set_cfalinenoise(libraw_data_t *lr,int cfaline, float linenoise);
  void libraw_set_wf_debanding(libraw_data_t *lr, int wf_debanding, float wfd0, float wfd1, float wfd2, float wfd3);
  void libraw_set_interpolation_passes(libraw_data_t *lr,int passes);
• Existing API changes:
  imgdata.params fields (all very specific purpose): sony_arw2_options, sraw_ycc, and params.x3f_flags replaced with single bit-field raw_processing_options See LIBRAW_PROCESSING_* bits in documentation.
• zlib library is optional
  Use -DUSE_ZLIB to compile with zlib (to provide deflate DNG support)
• libjpeg version: jpeg_mem_src() is mandatory, so use libjpeg-turbo or libjpeg 8+
• Fixes in vng_intepolate to make modern compilers happy
• Fixed bug in Sony SR2 files black level
• DNG files with BlackLevel both in vendor makernotes and BlackLevel: BlackLevel tag always takes precedence
• strlen replaced with strnlen in most cases, added local version of strnlen
• ChannelBlackLevel added to canon makernotes
• unpack_thumb() data size/offset check against file size