• Nigel Tao's avatar
    image/jpeg: support 4:1:1 and 4:1:0 chroma subsampling. · a32dd832
    Nigel Tao authored
    The test data was generated by:
    convert video-001.png tmp.tga
    cjpeg -quality 50 -sample 4x2,1x1,1x1 tmp.tga > video-001.q50.410.jpeg
    cjpeg -quality 50 -sample 4x1,1x1,1x1 tmp.tga > video-001.q50.411.jpeg
    cjpeg -quality 50 -sample 4x2,1x1,1x1 -progressive tmp.tga > video-001.q50.410.progressive.jpeg
    cjpeg -quality 50 -sample 4x1,1x1,1x1 -progressive tmp.tga > video-001.q50.411.progressive.jpeg
    rm tmp.tga
    
    Change-Id: I5570389c462360f98c3160f3c6963d9466d511de
    Reviewed-on: https://go-review.googlesource.com/6041Reviewed-by: 's avatarRob Pike <r@golang.org>
    a32dd832
reader_test.go 7.26 KB