image-webp

Publish v0.2.4 (#157)

Changes:

• Changed default upscaling to bilinear interpolation to match libwebp (#147)

Bug fixes:

• Fixed all remaining divergences against libwebp in loop filtering (#148, #149)

Optimizations:

• Optimized predictors in lossless_transform (#152)
• Improved performance of horizontal loop filtering (#151, #156)

Changes:

• Do not reject images with ICC profile bit set but missing ICCP chunk (#143)

Bug Fixes:

• Fixed a bug that caused the last chroma macroblock in the image to be sometimes decoded incorrectly (#144)

Changes:

• Do not apply background color to animated images by default to better match libwebp behavior (#135)

Bug Fixes:

• Fixed a bug in the loop filter causing subtly but noticeably incorrect decoding of some lossy images (#140)

Optimizations:

• Remove bounds checks from color transform hot loop (#133)
• Optimize resolving indexed images into RGB colors (#132, #134)

Changes:

• Increased the required Rust compiler version to v1.80

Optimizations:

• Removed bounds checks from hot loops in read_coefficients() (#121)
• Faster YUV -> RGBA conversion for a 7% speedup on lossy RGBA images (#122)
• Faster alpha blending for up to 20% speedup on animated images (#123)
• Much faster arithmetic decoding for up to 30% speedup on lossy images (#124)
• Avoid unnecessarily cloning image data for a 4% speedup (#126)

Breaking Changes:

• WebPDecoder now requires the passed reader implement BufRead.

Changes:

• Add EncoderParams to make predictor transform optional.

Bug Fixes:

• Several bug fixes in animation compositing.
• Fix indexing for filling image regions with tivial huffman codes.
• Properly update the color cache when trivial huffman codes are used.

Optimizations:

• Substantially faster decoding of lossless images, by switching to a table-based Huffman decoder and a variety of smaller optimizations.

Release 0.1.3 (#80)

Changes:

• Accept files with out-of-order "unknown" chunks.
• Switched to quick-error crate for faster compliation.

Bug Fixes:

• Fixed decoding of animations with ALPH chunks.
• Fixed encoding bug for extended WebP files.
• Resolved compliation problem with fuzz targets.

Optimizations:

• Faster YUV to RGB conversion.
• Improved BitReader logic.
• In-place decoding of lossless RGBA images.

Release 0.1.2 (#65)

• Export decoder::LoopCount.
• Fix decode bug in read_quantization_indices that caused some lossy images to appear washed out.
• Switch to byteorder-lite crate for byte order conversions.

Release 0.1.1 (#59)

• Fix RIFF size calculation in encoder.

Add crates.io metadata (#52)

• Initial release