diff options
| author | Markus Armbruster <armbru@redhat.com> | 2014-02-21 16:42:52 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2014-03-10 12:35:04 +0100 |
| commit | 2e7bcdb99adbd8fc10ad9ddcf93bd2bf3c0f1f2d (patch) | |
| tree | cafb54a850ceec1a0a29289ce76d993d6e67751a /ui | |
| parent | f53f3d0a00b6df39ce8dfca942608e5b6a9a4f71 (diff) | |
| download | qemu-2e7bcdb99adbd8fc10ad9ddcf93bd2bf3c0f1f2d.tar.gz | |
vnc: Fix tight_detect_smooth_image() for lossless case
VncTight member uint8_t quality is either (uint8_t)-1 for lossless or
less than 10 for lossy.
tight_detect_smooth_image() first promotes it to int, then compares
with -1. Always unequal, so we always execute the lossy code. Reads
beyond tight_conf[] and returns crap when quality is actually
lossless.
Compare to (uint8_t)-1 instead, like we do elsewhere.
Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'ui')
| -rw-r--r-- | ui/vnc-enc-tight.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c index e6966aebc3..59b59c0c79 100644 --- a/ui/vnc-enc-tight.c +++ b/ui/vnc-enc-tight.c @@ -330,7 +330,7 @@ tight_detect_smooth_image(VncState *vs, int w, int h) } else { errors = tight_detect_smooth_image16(vs, w, h); } - if (quality != -1) { + if (quality != (uint8_t)-1) { return (errors < tight_conf[quality].jpeg_threshold); } return (errors < tight_conf[compression].gradient_threshold); |