gamma yuva hist fix, theme change without exit

[goodguy/history.git] / cinelerra-5.0 / plugins / gamma / gamma.C

diff --git a/cinelerra-5.0/plugins/gamma/gamma.C b/cinelerra-5.0/plugins/gamma/gamma.C
index 7e029f7ff8aceaa1042ba4eaa42914c39be7180b..4c66a8ff26c23b1977fe05a258ba3e1ce6258eaa 100644 (file)
--- a/cinelerra-5.0/plugins/gamma/gamma.C
+++ b/cinelerra-5.0/plugins/gamma/gamma.C
@@ -182,9 +182,12 @@ void GammaUnit::process_package(LoadPackage *package)
                                break;
                        case BC_YUVA8888:
                                HISTOGRAM_HEAD(unsigned char)
-                               y = (float)row[0] / 0xff;
-                               u = (float)row[1] / 0xff;
-                               v = (float)row[2] / 0xff;
+                               y = row[0];
+                               u = row[1];
+                               v = row[2];
+                               y /= 0xff;
+                               u = (float)((u - 0x80) / 0xff);
+                               v = (float)((v - 0x80) / 0xff);
                                YUV::yuv_to_rgb_f(r, g, b, y, u, v);
                                HISTOGRAM_TAIL(4)
                                break;