v1.15.1 - fix compilation without plugins

build fix only

v1.15.0 - Windows plugins / CLLI, MDCV, PASP boxes

• codec plugin system now also works with Windows
• heif_convert: manually choose which decoder should be used
• support for CLLI (content light level box), MDCV (mastering display colour volume), PASP (pixel aspect) information
• ICC profile support in gdk-pixbuf loader
• various fixes

v1.14.2 - maintenance

A function name typo in the C++ wrapper was corrected in v1.14.1, but the old function name should not have been removed from the API
(ColorProfile_nclx::set_color_primaries()). The old name is added to the API again in this release.

This is the only change in this update.

v1.14.1 - maintenance release

This release fixes

• various issues is the build system
• encoding images smaller than 64x64 with svt-av1
• the 'quality' parameter for svt-av1
• a potentially wrong image orientation for PNG inputs
• crash on non-null terminated XMP input
• HDR RGB to YCbCr conversion coefficients for limited range coefficients

v1.14.0 - codec plugins / svt-av1 backend

• adds SVT-AV1 encoder as AVIF backend
• dynamic plugin interface for installing codecs independently from libheif (currently Unix only)
• add XMP header compression (using zlib)
• library should now be initialized with heif_init()
• heif_convert: extract EXIF and XMP to separate files
• heif_enc: add benchmarking function to compare codecs
• copy EXIF/XMP between HEIC/AVIF files and JPEG/PNG in all kinds of combinations
• remove EXIF orientation tag from input when converting to HEIC/AVIF and generate irot/imir boxes matching the input orientation

v1.13.0

• pay attention to the correct chroma sample positions
• heif_image now holds a list of decoding warnings
• use AOM AOM_USAGE_ALL_INTRA mode instead of AOM_USAGE_GOOD_QUALITY
• 'strict' decoding mode with more checks for standard conformity of input
• support for EXIF data >64k in JPEG output
• proper library initialization and cleanup
• separate quality settings for alpha channel (AOM)
• improve color conversion speed (no lroundf)
• build and packaging fixes

v1.12.0 - MIAF conformance / premultiplied alpha

• check for MIAF conformance and add as compatible brand
• signaling of premultiplied alpha
• parse AV1 obu_sequence_header for av1C box
• write pixi box in AVIFs
• save alpha as monochrome in AVIF if possible
• many build fixes (thanks to the numerous external contributors)

v1.11.0 - macOS compatibility fixes

• fix writing ispe box in HEIFs
• nclx output profile encoding parameters
• change the way nclx profiles is written so that macOS can read them
• API for listing file brands and checking file type
• fix heif_image_handle_get_depth_image_representation_info()

v1.10.0 - read all auxiliary images, improve macOS compatibility

• new API: may access all (vendor-dependent) auxiliary images (e.g. hdrgainmap, semanticskinmatte, ...)
• change the way images with odd sizes are written so that macOS can read them
• when ICC profile is present, will now write two colr boxes (nclx and ICC) into AVIF files. Also reads files with two colr boxes
• alpha image is now saved as monochrome
• loading of 16bit greyscale PNGs in heif_enc
• heif_enc, option "-E" deprecated
• remove dependency on alloca()
• fix known bugs

v1.9.1 - fix compilation bug in C++ wrapper

• fixed missing inline definition in C++ wrapper