diff options
| author |  Matt Sarett <msarett@google.com> | 2017-05-16 17:06:52 -0400 |
|---|---|---|
| committer |  Skia Commit-Bot <skia-commit-bot@chromium.org> | 2017-05-17 02:24:29 +0000 |
| commit | d5a16911bb0da6b03daee6e9dd896429c7f8e8a1 (patch) | |
| tree | 1aae55437f046079641a7519e5702af01d311518 /include/encode | |
| parent | 1cdbdda91748d5a3fece595e07de5efb662aaaad (diff) | |
Add support for webp lossless compression
Bug: 713862
Change-Id: I8dcc6506338f3c54fb14a78620e7daaadadfedde
Reviewed-on: https://skia-review.googlesource.com/17073
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
Diffstat (limited to 'include/encode')
| -rw-r--r-- | include/encode/SkWebpEncoder.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/include/encode/SkWebpEncoder.h b/include/encode/SkWebpEncoder.h index 8d894a442c..97d2742920 100644 --- a/include/encode/SkWebpEncoder.h +++ b/include/encode/SkWebpEncoder.h @@ -14,10 +14,25 @@ class SkWStream; namespace SkWebpEncoder { + enum class SK_API Compression { + kLossy, + kLossless, + }; + struct SK_API Options { /** - * |fQuality| must be in [0.0f, 100.0f] where 0.0f corresponds to the lowest quality. + * |fCompression| determines whether we will use webp lossy or lossless compression. + * + * |fQuality| must be in [0.0f, 100.0f]. + * If |fCompression| is kLossy, |fQuality| corresponds to the visual quality of the + * encoding. Decreasing the quality will result in a smaller encoded image. + * If |fCompression| is kLossless, |fQuality| corresponds to the amount of effort + * put into the encoding. Lower values will compress faster into larger files, + * while larger values will compress slower into smaller files. + * + * This scheme is designed to match the libwebp API. */ + Compression fCompression = Compression::kLossy; float fQuality = 100.0f; /** |