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| author | Matthias Vogelgesang <matthias.vogelgesang@gmail.com> | 2012-10-23 15:33:19 +0200 |
|---|---|---|
| committer | Matthias Vogelgesang <matthias.vogelgesang@gmail.com> | 2012-10-23 15:33:19 +0200 |
| commit | f68bda1ebebcf589fdab832abfecf997b7f223a6 (patch) | |
| tree | 97eb85d386872a923e28a42a64accd0896623798 /tools | |
| parent | e88005e679e7d5bd713c6dc38de80b7a75798010 (diff) | |
| download | uca-f68bda1ebebcf589fdab832abfecf997b7f223a6.tar.gz uca-f68bda1ebebcf589fdab832abfecf997b7f223a6.tar.bz2 uca-f68bda1ebebcf589fdab832abfecf997b7f223a6.tar.xz uca-f68bda1ebebcf589fdab832abfecf997b7f223a6.zip | |
Clamp displayed values
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/gui/control.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/gui/control.c b/tools/gui/control.c index 93398e4..f74e0f1 100644 --- a/tools/gui/control.c +++ b/tools/gui/control.c @@ -91,7 +91,8 @@ convert_grayscale_to_rgb (ThreadData *data, gpointer buffer) gint offset = y * stride * data->width; for (gint x = 0; x < data->display_width; x++, offset += stride) { - guchar val = (guchar) ((input[offset] - min) * factor); + gdouble dval = (input[offset] - min) * factor; + guchar val = (guchar) CLAMP(dval, 0.0, 255.0); output[i++] = val; output[i++] = val; @@ -106,7 +107,8 @@ convert_grayscale_to_rgb (ThreadData *data, gpointer buffer) gint offset = y * stride * data->width; for (gint x = 0; x < data->display_width; x++, offset += stride) { - guchar val = (guchar) ((input[offset] - min) * factor); + gdouble dval = (input[offset] - min) * factor; + guchar val = (guchar) CLAMP(dval, 0.0, 255.0); output[i++] = val; output[i++] = val; |