dany/libwebp
1
0
Fork 0
mirror of https://github.com/webmproject/libwebp.git synced 2025-07-14 21:09:55 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

make WebPCleanupTransparentArea work with argb picture

Browse Source 
the -alpha_cleanup flag was ineffective since we switched cwebp
to using ARGB input always.

Original idea by David Eckel (dvdckl at gmail dot com)

Change-Id: I0917a8b91ce15a43199728ff4ee2a163be443bab
This commit is contained in:
skal
2014-01-17 20:19:16 +01:00
parent 5da185522b
commit c741183c10
2 changed files with 66 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/webp/encode.h
View File

@ -459,9 +459,9 @@ WEBP_EXTERN(int) WebPPictureARGBToYUVADithered(
// Returns false in case of error.
WEBP_EXTERN(int) WebPPictureYUVAToARGB(WebPPicture* picture);
// Helper function: given a width x height plane of YUV(A) samples
// (with stride 'stride'), clean-up the YUV samples under fully transparent
// area, to help compressibility (no guarantee, though).
// Helper function: given a width x height plane of RGBA or YUV(A) samples
// clean-up the YUV or RGB samples under fully transparent area, to help
// compressibility (no guarantee, though).
WEBP_EXTERN(void) WebPCleanupTransparentArea(WebPPicture* picture);
// Scan the picture 'picture' for the presence of non fully opaque alpha values.