diff options
| -rw-r--r-- | src/plugins/imageformats/webp/qwebphandler.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/plugins/imageformats/webp/qwebphandler.cpp b/src/plugins/imageformats/webp/qwebphandler.cpp index 12c4001..578a701 100644 --- a/src/plugins/imageformats/webp/qwebphandler.cpp +++ b/src/plugins/imageformats/webp/qwebphandler.cpp @@ -248,8 +248,15 @@ bool QWebpHandler::write(const QImage &image) return false; } - config.quality = m_quality < 0 ? 75 : qMin(m_quality, 100); - config.lossless = (config.quality >= 100); + int reqQuality = m_quality < 0 ? 75 : qMin(m_quality, 100); + if (reqQuality < 100) { + config.lossless = 0; + config.quality = reqQuality; + } else { + config.lossless = 1; + config.quality = 70; // For lossless, specifies compression effort; 70 is libwebp default + } + config.alpha_quality = config.quality; picture.writer = pictureWriter; picture.custom_ptr = device(); |