Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

0.8.4 - 2020-11-23

Added

  • YCgCo support (full-range only, wantehchang)
  • Expose maxThreads to avifDecoder, add --jobs to avifdec
  • Add avifDecoderNthImageMaxExtent() streaming helper function to determine future reads
  • Create AVIF_VERSION_DEVEL, which allows for in-development changes to be detected during the build
  • New avifResult values: AVIF_RESULT_INVALID_ARGUMENT, AVIF_RESULT_NOT_IMPLEMENTED

Changed

  • Read/write one of each type of colr box, as allowed in HEIF 6.5.5.1 Amendment 3 (also now supported in libheif)
  • avifenc/avifdec: Now guesses input file format by header inspection instead of extension
  • avifenc: Fix y4m/stdin corner cases when trying to detect a “single image” encode
  • Add some protections against improperly using AVIF_ADD_IMAGE_FLAG_SINGLE
  • imir transformation: Disambiguate all usages of “vertical” and “horizontal” across comments and tooling
  • Print MC value when warning resetting to defaults (wantehchang)
  • Fix grid image rows/cols parsing on invalid data
  • Allow override of HAVE_POISON_SYSTEM_DIRECTORIES_WARNING (bnason-nf)
  • Lots of comments clarifications in avif.h

0.8.3 - 2020-11-09

Added

  • SVT-AV1 encode support (jonsneyers)
  • Basic libyuv support (8bpc only, see usage/limitations in avif.h)
  • Refactor avifChromaUpsampling for ease in high level decision making and adding more filters in the future (minor, benign breaking change due to enum reordering)
  • New CMake options: AVIF_CODEC_AOM_DECODE, AVIF_CODEC_AOM_ENCODE
  • New examples in examples/ dir (encode, decode_file, decode_memory, decode_streaming) to replace stale, not-compiled examples in README

Changed

  • avifenc: Explicitly signal SRGB CP/TC if the source image and user don't specify, and no ICC profile is present
  • Set g_lag_in_frames to 1 if encoding single image (encode memory optimization, wantehchang)
  • Early-out with OK in avifParse() if the expected top-level boxes were already parsed (streaming optimization)
  • Check increading item_ID and ipmaSeen in ipma box (wantehchang)
  • Fail gracefully in avifEncoderAddImage() if libavif wasn't compiled with encoding support
  • Add size_t casts to fix MSVC x86 compiler warnings (wantehchang)
  • Link with {ZLIB_LIBRARY} after ${PNG_LIBRARY} (wantehchang)
  • Fix a crash in avifJPEGRead() on fopen() failure (wantehchang)
  • No need to include ${ZLIB_INCLUDE_DIR} (wantehchang)
  • Put the value of ZLIB_INCLUDE_DIR in the cache (wantehchang)
  • Don't set image->alphaRange to yuvRange (wantehchang)
  • Expose chroma sample position in decoded images (wantehchang)
  • avifDecoderNthImage: tighten decoder flush (wantehchang)
  • Cleanup avifIOReadFunc comments for clarity (wantehchang)
  • Minor code cleanup
  • Minor CMake cleanup

Removed

  • Remove disableGridImages from avifDecoder (wantehchang)

0.8.2 - 2020-10-14

Added

  • avifIO reader API: allowing for parsing / image decoding without having the entire AVIF payload yet
  • Codec-specific options plumbing for advanced encoding settings
  • Add libaom codec-specific options (wantehchang)
  • avifenc: Allow endusers to ignore an AVIF's ICC profile during conversion (--ignore-icc)
  • avifenc: Allow the setting/overriding of XMP, Exif, and ICC profiles
  • Add the disableGridImages setting to avifDecoder
  • Add AVIF_FMT_ZU to fix compiling with non-standard/old compilers
  • Add AVIF_ENABLE_WERROR (ON by default)
  • Add AVIF_ENABLE_COVERAGE for basic llvm coverage report generation

Changed

  • Support multiple extents in an ItemLocationBox
  • Store all alpha payloads before color payloads in mdat
  • Perform 0.5 UV bias with integers, as 128/512/2048 aren't exactly 0.5, but are expected to behave as such
  • Avoid libpng's complaints about specific ICC profiles
  • Disable receiving one-frame-per-layer when decoding scalable AVIFs with aom and dav1d
  • Fix incorrect 8-to-16 monochrome YUV conversion
  • Set max image size to 16384 * 16384
  • Remove range and sample position from avifImageStealPlanes()
  • Ensure only one of each mandatory-unique box in a meta box exists
  • Ensure each item ID is cited once in an iloc box
  • Sanity check merged extents item size against the file size
  • Various image grid bugfixes
  • Error out with AVIF_RESULT_REFORMAT_FAILED if request uses an unsupported MC
  • Fix memory leak in avifenc when encoding image sequences
  • Move oss-fuzz fuzzer implementation into tests/oss-fuzz
  • avifdec: actually propagate the commandline codecChoice to the avifDecoder
  • Fix an infinite loop in codec_dav1d on a carefully-malformed AV1 payload
  • Fix a few issues with warnings in gcc/clang
  • Various comments tweaks

0.8.1 - 2020-08-05

Added

  • Add ignoreAlpha field to avifRGBImage (linkmauve)
  • Save support in gdk-pixbuf component (novomesk)

Changed

  • Only ever create one iref box, filled with multiple cdsc boxes (#247)
  • Fix incorrect 16-to-8 monochrome YUV conversion
  • Make decoding optional in CMake, like encoding is
  • Include avif INTERFACE_INCLUDE_DIRECTORIES first (cryptomilk)
  • Set C standard to C99, adjust flags for dav1d (1480c1)
  • Minor cleanup/fixes in reformat.c (wantehchang)
  • Fix a crash in the gdk-pixbuf loader, removed unnecessary asserts (novomesk)

0.8.0 - 2020-07-14

Added

  • Monochrome (YUV400) support **
    • All encoding/decoding and internal memory savings are done/functional
    • libaom has a bug in chroma_check() which crashes when encoding monochrome, to be fixed in a future (>v2.0.0) version
    • rav1e didn't implement CS400 until rav1e v0.4.0
    • libavif safely falls back to YUV420 when these earlier codec versions are detected
      • NOTE: If you want to do heavy monochrome testing, wait for newer versions to libaom/rav1e!
  • Image sequence encoding support
    • Required medium-sized refactors in the codec layers
    • Image sequences (tracks) now fully support all metadata properly (Exif/XMP/transforms)
    • avifenc can now encode a series of same-sized images with a consistent framerate, or each with their own custom duration
  • Bilinear upsampling support
  • avifenc: Add --ignore-icc, which avoids embedding the ICC profile found in the source image
  • avifdec: Add --info, which attempts to decode all frames and display their basic info (merge of avifdump)
  • avifenc: add --tilerowslog2 and --tilecolslog2 (wantehchang)
  • Added contrib dir for any unofficially supported code contributions (e.g. gdk-pixbuf)

Changed

  • CICP Refactor (breaking change!)
    • Remove most references to “NCLX”, as it is mostly an implementation detail, and the values are really from MPEG-CICP
    • Eliminate avifProfileFormat: having an ICC profile is not mutually exclusive with signaling CICP
    • CICP is now always available in an avifImage, set to unspecified by default
    • Added --cicp as an alias for --nclx (semi-deprecated)
    • Setting CICP via avifenc no longer overrides ICC profiles, they co-exist
    • Simplified avifenc argument parsing / warnings logic
    • avifenc/avifdec/avifdump now all display CICP when dumping AVIF information
    • nclx colr box contents are guaranteed to override AV1 bitstream CICP (as MIAF standard specifies)
    • Added comments explaining various decisions and citing standards
    • Removed ICC inspection code regarding chroma-derived mtxCoeffs; this was overdesigned. Now just honor the assoc. colorPrimaries enum
    • Reworked all examples in the README to reflect the new state of things, and clean out some cruft
    • Harvest CICP from AV1 bitstream as a fallback in avifDecoderParse() if nclx box is absent
  • All data other than actual pixel data should be available and valid after a call to avifDecoderParse()
  • Refactor avifDecoder internal structures to properly handle meta boxes in trak boxes (see avifMeta)
  • Update libaom.cmd to point at the v2.0.0 tag
  • Update dav1d.cmd to point at the 0.7.1 tag
  • Re-enable cpu-used=7+ in codec_aom when libaom major version > 1
  • Memory allocation failures now cause libavif to abort the process (rather than undefined behavior)
  • Fix to maintain alpha range when decoding an image grid with alpha
  • Improvements to avifyuv to show drift when yuv and rgb depths differ
  • Remove any references to (incorrect) “av01” brand (wantehchang)
  • Set up libaom to use reduced_still_picture_header (wantehchang)
  • Use libaom cpu_used 6 in “good quality” usage mode (wantehchang)
  • Update avifBitsReadUleb128 with latest dav1d code (wantehchang)
  • Set encoder chroma sample position (wantehchang)

0.7.3 - 2020-05-04

Added

  • avifenc: Lossless (--lossless, -l) mode, which sets new defaults and warns when anything would cause the AVIF to not be lossless

Changed

  • Minor cleanup for -Wclobbered warnings
  • Minor fixes to README and code (fallout from enum rework)
  • Protect against oversized (out of bounds) samples in avif sample tables
  • Optimization: avoid AV1 sample copying when feeding data to dav1d

0.7.2 - 2020-04-24

Added

  • Recognize extensions with capital letters / capslock
  • Proper support for AVIF_NCLX_MATRIX_COEFFICIENTS_IDENTITY

Changed

  • Large nclx enum refactor (breaking change), reworking all 3 enums to better match AV1 codec enums
  • Fixes to ‘essential’ item properties (marking av1C as essential, ignoring any items containing unsupported essential props)
  • avifenc - Allow --nclx to override embedded ICC profiles (with a warning), instead of --nclx being ignored
  • avifenc - Choose high-quality-but-lossy QP defaults, and a default speed of 8
  • avifdump - Fix format specifiers for 32bit
  • Now prioritizing libaom over rav1e when both are present
  • Remove -Wclobbered dodging (volatile) and instead just disable the warning in avifpng/avifjpeg
  • avifyuv: extra testing modes
  • Cleanup to avifCodecVersions()
  • Reorganize iccjpeg code back into its own files for licensing conveniences

0.7.1 - 2020-04-16

Changed

  • avifenc: Set nclx/range values in avifImage earlier so proper YUV coefficients are used when converting JPEG/PNG

0.7.0 - 2020-04-16

Added

  • avifenc and avifdec JPEG support
  • Docker test script to build avifenc + deps in a shared libs (distro-like) env
  • Added simple avifdump tool for aiding in AVIF debugging
  • Added some comments in avif.h to clarify avifDecoderSetSource() usage

Changed

  • avifRange cleanup/refactor (breaking change)
  • avifenc now has -r to set YUV range (when using JPEG/PNG), --nclx now takes 3 arguments as a result

0.6.4 - 2020-04-14

Added

  • Added avifDecoderNthImageTiming() for querying frame timing without needing to decode the frame
  • Added some comments explaining avifDecoderSetSource()

Changed

  • Fix clang warning (switch clamp to min)
  • Fix a few clang analyzer issues
  • Avoid incorrect YUV range cast
  • Call dav1d_data_unref in dav1dCodecDestroyInternal (wantehchang)
  • Declare some avifSampleTable * pointers as const (wantehchang)
  • Update to cJSON v1.7.13 (wantehchang)
  • Minor code cleanup

0.6.3 - 2020-03-30

Changed

  • Avoid throwing away const unnecessarily in avifROStreamReadString()
  • Re-enable a bunch of clang warnings
  • Set dav1dSettings.frame_size_limit to avoid OOM (wantehchang)
  • Refactor write.c to use a similar Data/Item design as read.c
  • YUV to RGB optimizations

0.6.2 - 2020-03-11

Changed

  • Fix 16bpc PNG output
  • Compile fixes to avoid -Wclobbered in PNG code
  • GitHub automatic deployment from AppVeyor (EwoutH)

0.6.1 - 2020-03-11

Added

  • PNG support for avifenc/avifdec

Changed

  • Fixed Clang10 build warning
  • Fix SOVERSION in cmake (cryptomilk)
  • Minor tweaks to avifBool usage (wantehchang)

0.6.0 - 2020-03-09

Added

  • avifRGBImage structure and associated routines (BREAKING CHANGE)
  • avifImage alphaRange support
  • Support pasp, clap, irot, imir metadata for encode/decode

Changed

  • Large RGB conversion refactor (BREAKING CHANGE), see README for new examples
  • Minor fixes to make Clang 10 happy
  • pkg-config fixes
  • Lots of minor cleanup in code/CMake (wantehchang)
  • Fix to NCLX color profile plumbing (ledyba-z)
  • Cleanup unnecessary avifBool ternary expressions
  • Update default dav1d version to 0.6.0
  • Update default rav1e version to v0.3.1

0.5.7 - 2020-03-03

Added

  • libgav1 decode codec support. (wantehchang @Google)
  • Expose codec selection to avifdec/avifenc, speed to avifenc
  • Image grid support (Summer_in_Tomsk_720p_5x4_grid)
  • minQuantizerAlpha/maxQuantizerAlpha support in avifEncoder, avifenc
  • 444alpha support in y4m layer (avifenc, avifdec)
  • pkg-config support (cryptomilk)
  • Proper support of NCLX matrix coefficients enum (link-u)

Changed

  • AppVeyor builds now compile with dav1d (EwoutH)
  • Lots of minor CMake/code cleanup (wantehchang @Google)
  • cJSON license note for aviftest (wantehchang @Google)

0.5.6 - 2020-02-19

Added

  • Added CMake Find modules for aom, dav1d, rav1e (cryptomilk)

Changed

  • use right-most and bottom-most UV pixels in images with odd-dimensions (ledyba-z)
  • avoid libaom crash when encoding >8bpc images at high speed

0.5.5 - 2020-02-13

Added

  • Enable still picture mode with rav1e >= 0.3.0 (cryptomilk)
  • Basic test suite (aviftest, rough draft)

Changed

  • Explicitly cast unorms to float during YUV conversion, fixing clang warning
  • Optimize SampleSizeBox parsing when sample_size>0, fixes OOM oss-fuzz issue #5192805347753984
  • Fix memory leak when using avifDecoderReset(), fixes oss-fuzz issue #5770230506979328
  • Update default rav1e version from 0.2.1 to 0.3.0
  • Remove a null check for codec->internal->image (wantehchang)

0.5.4 - 2020-01-21

Changed

  • Fix monochrome inputs on avifImageCopy. Monochrome still isn't really a first-class citizen in libavif, but this should at least honor the incoming data better.
  • Updated README‘s Basic Decoding section reminding of avifDecoderRead’s tradeoffs
  • build: avoid -ldl if not required or not supported (jbeich)
  • apps: convert ADVANCE to an expression (jbeich)

0.5.3 - 2019-12-03

Added

  • Honor CMake's builtin CMAKE_SKIP_INSTALL_RULES

Changed

  • avifenc - Removed accidental double-delete of avifImage when failing to read a y4m file input
  • Round dimensions down when decoding subsampled YUV with odd dimensions

0.5.2 - 2019-11-23

Changed

  • Fix incorrect free in 0-case for avifRWDataSet()

0.5.1 - 2019-11-21

Changed

  • Fix expectations for Exif payload to better match normal usage

0.5.0 - 2019-11-21

Added

  • Define version and SO-version for shared library
  • Use -DBUILD_SHARED_LIBS=OFF for building a static lib
  • avifImage can now hold Exif and XMP metadata (avifImageSetMetadataExif, avifImageSetMetadataXMP)
  • Support for reading/writing Exif and XMP items
  • Now tracking idat boxes across meta boxes
  • Support for iloc construction_method 1 (idat)

Changed

  • Proper handling of the primary item box (pitm) on read
  • avifROStreamReadString() now allows string skipping by passing a NULL output buffer
  • Updated README to show Exif/XMP support

0.4.8 - 2019-11-19

Added

  • avifEncoder now has a speed setting
  • codec_aom only flushes encoder when necessary (avoids lost frame packets)
  • shared library compilation (build shared by default, use -DAVIF_BUILD_STATIC=1 for static lib)
  • make install support
  • cmake fixes/support for find_package (cryptomilk)

Changed

  • Updated libaom to more recent SHA in aom.cmd
  • Tweaked AVIF_LOCAL_AOM settings to play nice with libaom‘s usage of CMake’s option()
  • Remove all libaom special cases from libavif's CMakefiles, and have it work the same way dav1d and rav1e do
  • Minor cleanup

0.4.7 - 2019-11-11

Changed

  • Fix memory leak in rav1e codec (PR20, AurelC2G)
  • Bump rav1e version in rav1e.cmd, implement avifCodecVersionRav1e()
  • Display versions in avifenc and avifdec

0.4.6 - 2019-10-30

Changed

  • Fix rav1e build on Linux x64, and eliminate pseudo-dependency on cargo-c

0.4.5 - 2019-10-30

Changed

  • Fix rav1e codec's alpha encoding (monochrome asserts, might be unsupported still)

0.4.4 - 2019-10-30

Changed

  • Fix QP range for rav1e encodes (rav1e uses [0-255], not [0-63])
  • Distribute out and share code populating av01 config box across codecs

0.4.3 - 2019-10-28

Added

  • rav1e codec support (encode-only)
  • rav1e.cmd and dav1d.cmd to ext

Changed

  • All codecs can coexist peacefully now, and can be queried for availability or specifically chosen at encode/decode time
  • Updated README to indicate changes to CMake which facilitate codec reorg

0.4.2 - 2019-10-17

Changed

  • Populate nclx box inside of OBU in addition to AVIF container

0.4.1 - 2019-10-17

Added

  • Added containerDepth to avifDecoder for surfacing 10bpc/12bpc flags from av1C boxes, if present
  • Added avifCodecVersions() for getting version strings of internal AV1 codecs

Changed

  • Fixed warning with CHECK macro (additional semicolon)

0.4.0 - 2019-10-02

Added

  • exposed util functions: avifFullToLimitedY, avifFullToLimitedUV, avifLimitedToFullY, avifLimitedToFullUV, avifPrepareReformatState

Changed

  • Renamed ispeWidth/ispeHeight to containerWidth/containerHeight; they now can hold tkhd's width/height
  • Split avifImageYUVToRGB into faster internal functions (estimated gain: 3.5x)
  • Fixed a few memory leaks, one in the README, one in codec_dav1d (AurelC2G)

0.3.11 - 2019-09-26

Added

  • Exposed ispeWidth/ispeHeight to decoder if decoding items with an associated ispe box
  • Now parsing/tracking sample description formats to filter non-av01 type tracks
  • Allow brand ‘av01’ to be decoded

Changed

  • Fixed bug in sync sample table element sizing
  • Pass through starting sample index to codec when flushing with NthImage

0.3.10 - 2019-09-26

Added

  • stss box parsing for keyframe information
  • avifBool avifDecoderIsKeyframe(avifDecoder * decoder, uint32_t frameIndex);
  • uint32_t avifDecoderNearestKeyframe(avifDecoder * decoder, uint32_t frameIndex);
  • avifResult avifDecoderNthImage(avifDecoder * decoder, uint32_t frameIndex);
  • aviffuzz prints keyframe information as it repeatedly decodes

Changed

  • internally renamed codec function “decode” to “open”, as that's all it does
  • dav1d codec's open function no longer does an initial unnecessary feed
  • avifCodecDecodeInput now stores an array of avifSample which know if they're keyframes
  • moved codec flushing code into avifDecoderFlush() so it is available to avifDecoderNthImage
  • ptsInTimescales is now calculated independently of frame decode order

0.3.9 - 2019-09-25

Changed

  • Split avifRawData and avifStream into read-only (const) and read/write versions, updated code accordingly
  • Fix a few clang/macOS warnings

0.3.8 - 2019-09-04

Changed

  • Reverted codec_aom and libaom to use previous SHA (v1.0.0-errata1 is ancient)

0.3.7 - 2019-09-04 - DO NOT USE THIS VERSION

Added

  • Check for proper width/height/depth when decoding alpha with dav1d, matching libaom's impl

Changed

  • Updated codec_aom and libaom to use v1.0.0-errata1

0.3.6 - 2019-07-25

Added

  • Exposed tile encoding to avifEncoder

0.3.5 - 2019-07-25

Changed

  • Fixed copypasta bug in libaom encoding quantizer setup

0.3.4 - 2019-07-25

Added

  • When the AVIF container does not contain a color profile, fallback to the color OBU's nclx

0.3.3 - 2019-07-24

Added

  • new helper function avifPeekCompatibleFileType()
  • expose ioStats on avifDecoder again (currently only interesting when reading items)

Changed

  • Fixed some warnings (removed unused variables and a bad cast)
  • Add a define in dav1d layer for supporting older dav1d codecs
  • Enabled tons of warnings, and warnings-as-errors; Fixed associated fallout
  • codec_dav1d: disambiguate “needs more data” and “no more frames” in feed data pump

0.3.2 - 2019-07-23

Added

  • Added ext/aom.cmd to perform a local checkout of the aom codebase, as an alternative to a real submodule. This allows downstream projects to use libavif without recursive submodule issues.
  • AppVeyor and Travis scripts now explicitly clone libaom into ext/ as an alternative to a submodule.

Changed

  • Remove ext/aom as a submodule. If libavif users want to build aom from ext/, they must enable AVIF_BUILD_AOM and supply their own local copy.
  • Move the handful of public domain gb_math functions used by colr.c and eliminate the dependence on the gb library
  • Detect when libaom or libdav1d is being included by a parent CMake project and allow it
  • Offer libavif's include dir alongside the library in CMake (target_include_directories)

0.3.1 - 2019-07-22

Changed

  • Moved dependency on libm to avif executables, instead of directly on the library
  • Minor changes to README examples

0.3.0 - 2019-07-22

Added

  • new CMake option AVIF_CODEC_AOM to enable/disable the usage of AOM's codec (default: on)
  • new CMake option AVIF_CODEC_DAV1D to enable/disable the usage of dav1d's codec (default: off)
  • codec_dav1d.c, which provides decoding via libdav1d
  • fuzz.sh which builds with afl-clang and runs afl-fuzz
  • aviffuzz tool, used in fuzzing script
  • fuzz inputs made with colorist
  • .clang-format file
  • avifArray*() functions for basic dynamic arrays when parsing
  • moov box parsing
  • now reads ‘avis’ brands
  • Split avifDecoderRead() into components for image sequences:
    • avifDecoderSetSource()
    • avifDecoderParse()
    • avifDecoderNextImage()
    • avifImageCopy()
    • avifDecoderReset()
  • Added decoder and image timings for image sequences

Changed

  • Reorganized internal struct avifCodec to accomodate multiple codecs simultaneously (compile time; not exposed to API)
  • Fix some compiler warnings
  • Sanity check offsets and sizes in items table before using
  • Bail out of box header advertises an impossible size
  • Ran clang-format on all of src and include
  • Fix copypasta leading to a memory leak in RGB planes
  • Switched items and properties during parse to use dynamic arrays
  • Refactored codec API to not require each codec to maintain per-plane decoder instances
  • avifImage can now “not own” its planes and directly point at decoder planes to avoid copies
  • aviffuzz attempts to decode all images in source material twice (using avifDecoderReset())
  • Switch decoder->quality to explicit [minQuantizer, maxQuantizer], update assoc. constants
  • Add examples to README

0.2.0 - 2019-06-12

Added

  • Added avifEncoder and avifDecoder to match avifImage's pattern and allow for easier future parameterization

Changed

  • Renamed project in cmake to libavif to match new official repo naming
  • Updated appveyor script to use libavif
  • Updated examples and apps to use new encoder/decoder pattern

0.1.4 - 2019-06-11

Added

  • avifPixelFormatToString() convenience function for debugging/printing
  • avifenc and avifdec “apps” which show basic bidirectional conversion to y4m

Changed

  • Make calling avifImageYUVToRGB() upon reading an avif optional
  • Moved ext/aom submodule to use official remote
  • Update ext/aom submodule to commit 38711e7fe

Removed

  • Remove all calls to convertXYZToXYY() as they were all unnecessary

0.1.3 - 2019-04-23

Changed

  • ftyp - Change major_brand to avif
  • ftyp - Reorder compatible_brands, add MA1A or MA1B when appropriate
  • Write meta box before mdat box for streaming friendliness

0.1.2 - 2019-04-18

Added

  • AVIF_NCLX_COLOUR_PRIMARIES_P3 (convenient mirrored value)
  • avifNclxColourPrimariesFind() - Finds a builtin avifNclxColourPrimaries and name by a set of primaries

Changed

  • Fixed enum name copypasta for AVIF_NCLX_COLOUR_PRIMARIES_EG432_1
  • Fix UV limited ranges when doing full<->limited range conversion

0.1.1 - 2019-04-15

Added

  • Added appveyor.yml (exported from Appveyor)
  • Move ext/aom to a proper submodule
  • Update AOM to commit 3e3b9342a with minor CMake changes

Changed

  • Added static library artifact zip to Windows x64 builds (Appveyor)
  • Updated README to explain libavif's goals and a little more build info
  • Fix clang warning in avifVersion() signature

0.1.0 - 2019-04-12

Added

  • First version. Plenty of bugfixes and features await!
  • ext/aom based off AOM commit 3563b12b with minor CMake changes
  • An interest and willingness to maintain this file.
  • Constants AVIF_VERSION, AVIF_VERSION_MAJOR, AVIF_VERSION_MINOR, AVIF_VERSION_PATCH
  • avifVersion() function