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| author | Rob Pike <robpike@gmail.com> | 2011-05-17 17:46:45 -0400 |
|---|---|---|
| committer | Russ Cox <rsc@swtch.com> | 2011-05-17 17:46:45 -0400 |
| commit | 4e247f10fac36e3234aeb6490a66ac57d9520a4a (patch) | |
| tree | f8ddea1ac7faab67f62862e3803ff0bc214e1bfb /src/cmd/jpg | |
| parent | 64ef09ff8983d108d67a68a66e9b608354c57e99 (diff) | |
| download | plan9port-4e247f10fac36e3234aeb6490a66ac57d9520a4a.tar.gz plan9port-4e247f10fac36e3234aeb6490a66ac57d9520a4a.tar.bz2 plan9port-4e247f10fac36e3234aeb6490a66ac57d9520a4a.zip | |
gif: fix setting of transparency channels when writing gifs.
R=rsc
http://codereview.appspot.com/4538073
Diffstat (limited to 'src/cmd/jpg')
| -rw-r--r-- | src/cmd/jpg/gif.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/src/cmd/jpg/gif.c b/src/cmd/jpg/gif.c index d154740b..dbe2ce08 100644 --- a/src/cmd/jpg/gif.c +++ b/src/cmd/jpg/gif.c @@ -239,7 +239,7 @@ addalpha(Rawimage *i) * r is used only for reference; the image is already in c. */ void -whiteout(Rawimage *r, Rawimage *c) +blackout(Rawimage *r, Rawimage *c) { int i, trindex; uchar *rp, *cp; @@ -251,9 +251,9 @@ whiteout(Rawimage *r, Rawimage *c) for(i=0; i<r->chanlen; i++){ if(*rp == trindex){ *cp++ = 0x00; - *cp++ = 0xFF; - *cp++ = 0xFF; - *cp++ = 0xFF; + *cp++ = 0x00; + *cp++ = 0x00; + *cp++ = 0x00; }else{ *cp++ = 0xFF; cp += 3; @@ -264,7 +264,7 @@ whiteout(Rawimage *r, Rawimage *c) for(i=0; i<r->chanlen; i++){ if(*rp == trindex){ *cp++ = 0x00; - *cp++ = 0xFF; + *cp++ = 0x00; }else{ *cp++ = 0xFF; cp++; @@ -390,7 +390,7 @@ show(int fd, char *name) if(nineflag){ if(images[0]->gifflags&TRANSP){ addalpha(rgbv[0]); - whiteout(images[0], rgbv[0]); + blackout(images[0], rgbv[0]); } chantostr(buf, outchan); print("%11s %11d %11d %11d %11d ", buf, @@ -402,7 +402,7 @@ show(int fd, char *name) }else if(cflag){ if(images[0]->gifflags&TRANSP){ addalpha(rgbv[0]); - whiteout(images[0], rgbv[0]); + blackout(images[0], rgbv[0]); } if(writerawimage(1, rgbv[0]) < 0){ fprint(2, "gif: %s: write error: %r\n", name); |