minor improvements from Andrew

[goodguy/cinelerra.git] / cinelerra-5.1 / guicast / vframe.C

diff --git a/cinelerra-5.1/guicast/vframe.C b/cinelerra-5.1/guicast/vframe.C
index 44d7f97e6284a3f5f2c333902cc3dfceef930afe..8e90cca1c6f0cba5013597ed50e11aa9fa56d68a 100644 (file)
--- a/cinelerra-5.1/guicast/vframe.C
+++ b/cinelerra-5.1/guicast/vframe.C
@@ -1403,12 +1403,12 @@ int VFrame::get_memory_usage()
 // a (~alpha) transparency, 0x00==solid .. 0xff==transparent
 void VFrame::set_pixel_color(int rgb, int a)
 {
-       pixel_rgb = (~a<<24) | (rgb&0xffffff);
+       pixel_rgb = (~(unsigned int)a<<24) | (rgb&0xffffff);
        int ir = 0xff & (pixel_rgb >> 16);
        int ig = 0xff & (pixel_rgb >> 8);
        int ib = 0xff & (pixel_rgb >> 0);
        YUV::yuv.rgb_to_yuv_8(ir, ig, ib);
-       pixel_yuv = (~a<<24) | (ir<<16) | (ig<<8) | (ib<<0);
+       pixel_yuv = (~(unsigned int)a<<24) | (ir<<16) | (ig<<8) | (ib<<0);
 }
 
 void VFrame::set_stiple(int mask)