diff options
| author | cinap_lenrek <cinap_lenrek@localhost> | 2011-08-26 03:28:09 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@localhost> | 2011-08-26 03:28:09 +0200 |
| commit | 00161ca7fcd1422bfede7b50776fbf2f871e67c9 (patch) | |
| tree | df5d96e02d79206d3ac7a35b070a0ef2704a3b01 | |
| parent | c9b707cd5632a84d44ab089e02e65407dcc4ed54 (diff) | |
| download | plan9front-00161ca7fcd1422bfede7b50776fbf2f871e67c9.tar.xz | |
gif: fix setting of transparency channels when writing gifs. (from rsc p9p)
| -rw-r--r-- | sys/src/cmd/jpg/gif.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/sys/src/cmd/jpg/gif.c b/sys/src/cmd/jpg/gif.c index f99270176..7034ff888 100644 --- a/sys/src/cmd/jpg/gif.c +++ b/sys/src/cmd/jpg/gif.c @@ -229,7 +229,7 @@ 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; @@ -241,9 +241,9 @@ 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; @@ -254,7 +254,7 @@ 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++; @@ -380,7 +380,7 @@ 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, @@ -392,7 +392,7 @@ 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); |