github.com/cellofellow/gopkg@v0.0.0-20140722061823-eec0544a62ad/image/webp/libwebp/NEWS (about)

     1  - 12/19/13: version 0.4.0
     2    * improved gif2webp tool
     3    * numerous fixes, compression improvement and speed-up
     4    * dither option added to decoder (dwebp -dither 50 ...)
     5    * improved multi-threaded modes (-mt option)
     6    * improved filtering strength determination
     7    * New function: WebPMuxGetCanvasSize
     8    * BMP and TIFF format output added to 'dwebp'
     9    * Significant memory reduction for decoding lossy images with alpha.
    10    * Intertwined decoding of RGB and alpha for a shorter
    11      time-to-first-decoded-pixel.
    12    * WebPIterator has a new member 'has_alpha' denoting whether the frame
    13      contains transparency.
    14    * Container spec amended with new 'blending method' for animation.
    15  
    16  - 6/13/13: version 0.3.1
    17    This is a binary compatible release.
    18    * Add incremental decoding support for images containing ALPH and ICCP chunks.
    19    * Python bindings via swig for the simple encode/decode interfaces similar to
    20      Java.
    21  
    22  - 3/20/13: version 0.3.0
    23    This is a binary compatible release.
    24    * WebPINewRGB/WebPINewYUVA accept being passed a NULL output buffer
    25      and will perform auto-allocation.
    26    * default filter option is now '-strong -f 60'
    27    * encoding speed-up for lossy methods 3 to 6
    28    * alpha encoding can be done in parallel to lossy using 'cwebp -mt ...'
    29    * color profile, metadata (XMP/EXIF) and animation support finalized in the
    30      container.
    31    * various NEON assembly additions
    32    Tool updates / additions:
    33      * gif2webp added
    34      * vwebp given color profile & animation support
    35      * cwebp can preserve color profile / metadata with '-metadata'
    36  
    37  - 10/30/12: version 0.2.1
    38    * Various security related fixes
    39    * cwebp.exe: fix import errors on Windows XP
    40    * enable DLL builds for mingw targets
    41  
    42  - 8/3/12: version 0.2.0
    43    * Add support for ARGB -> YUVA conversion for lossless decoder
    44      New functions: WebPINewYUVA, WebPIDecGetYUVA
    45    * Add stats for lossless and alpha encoding
    46    * Security related hardening: allocation and size checks
    47    * Add PAM output support to dwebp
    48  
    49  - 7/19/12: version 0.1.99
    50    * This is a pre-release of 0.2.0, not an rc to allow for further
    51      incompatible changes based on user feedback.
    52    * Alpha channel encode/decode support.
    53    * Lossless encoder/decoder.
    54    * Add TIFF input support to cwebp.
    55    Incompatible changes:
    56      * The encode ABI has been modified to support alpha encoding.
    57      * Deprecated function WebPINew() has been removed.
    58      * Decode function signatures have changed to consistently use size_t over
    59        int/uint32_t.
    60      * decode_vp8.h is no longer installed system-wide.
    61      * cwebp will encode the alpha channel if present.
    62  
    63  - 9/19/11: version 0.1.3
    64    * Advanced decoding APIs.
    65    * On-the-fly cropping and rescaling of images.
    66    * SSE2 instructions for decoding performance optimizations on x86 based platforms.
    67    * Support Multi-threaded decoding.
    68    * 40% improvement in Decoding performance.
    69    * Add support for RGB565, RGBA4444 & ARGB image colorspace.
    70    * Better handling of large picture encoding.
    71  
    72  - 3/25/11: version 0.1.2
    73    * Incremental decoding: picture can be decoded byte-by-byte if needs be.
    74    * lot of bug-fixes, consolidation and stabilization
    75  
    76  - 2/23/11: initial release of version 0.1, with the new encoder
    77  - 9/30/10: initial release version with only the lightweight decoder