• Alpha-quality (i.e. untested) RawSpeed library support (http://rawstudio.org/blog/?p=800) Decoding (LibRaw::unpack()) of supported formats is 1.5-3x times faster.
• OpenMP speedup for linear interpolation
• Disabled decoding JPEG (lossy DNG) data from memory buffer for libjpeg version less than 8. Use -DUSE_JPEG8 if your jpeg is v8+
• hotspots moved to virtual functions
• is_phaseone_compressed() call
• PhaseOne RAWs: for user-specified black level(s) black subtraction works as expected.
• ABI and API changed, all programs using 0.15-Alpha1-3 should be recompiled!

More on RawSpeed support:

• API changes:
  • imgdata.params.use_rawspeed run-time configuration option (default to Yes!)
  • LibRaw::set_rawspeed_camerafile(char *path_to_cameras_xml) - call to set camera information on runtime (cameras.xml from latest release is compiled in). If you do not use this call, compile-time cameras.xml will be used.
  • New call Libraw*datastream::size() returns full size of data file (needed for RawSpeed support). Implemented for all datastreams provided with LibRaw.
  • imgdata.sizes.raw_pitch - row pitch in imgdata.rawdata.raw_image Use raw_image[row*raw_pitch+col] instead of [row*raw_width+col] if your code accesses raw_image[] array.
• Other changes:
  • dcraw_emu: command line switch -disars disables RawSpeed use
  • postprocessing_benchmark: use -c to disable RawSpeed use
• RawSpeed support uses buffer for full RAW file, so memory usage is higher.
• Compilation:
  • Use -DUSE_RAWSPEED define to turn RawSpeed support on. You'll need to compile and install RawSpeed on your system. See README.RawSpeed.txt for details
  • set -DNOSONY_RAWSPEED to disable Sony files decoding by RawSpeed
  • ./configure do not supported yet, use Makefile.dist on Unix/Mac and Makefile.msvc on Win32
  • (Unix only) Set RAWSPEED_XMLDATA=../path/to/cameras.xml to re-build internal copy of RawSpeed's cameras.xml file
• TODO:
  • RawSpeed decode support for non-bayer images
  • Remove double-buffering if LibRaw_buffer_datstream is used
  • Documentation and samples Update