Ubuntu
libdecodeqr package

libdecodeqr-webcam grab fail

Bug #667167 reported by Homin Lee
8
This bug affects 1 person
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libdecodeqr (Ubuntu)
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Bug Description

Binary package hint: libdecodeqr-examples

1) Ubuntu 10.04.1 LTS
2) libdecodeqr-examples 0.9.3-2ubuntu1
3) when I hit a space for grab qrcode image from my webcam, the libdecodeqr-webcam is terminated.
return code from cvWaitKey() is not char 0x20 but 0x100020.
4) following patch is needed.

--- a/src/sample/webcam/webcam.cpp 2007-02-26 04:42:28.000000000 +0900
+++ a/src/sample/webcam/webcam.cpp 2010-10-27 15:34:28.959167170 +0900
@@ -79,7 +79,7 @@
         //
         // when [SPACE] key pressed, do decode.
         //
- if(key==0x20&&!qr_decoder_is_busy(decoder)){
+ if((key&0xff)==0x20&&!qr_decoder_is_busy(decoder)){
             key=-1;

             //

Revision history for this message
Fremont Früst (montfrefu) wrote :

Hello,

I had the same problem in Ubuntu 10.04 LTS, but I can't find the file where I should put the patch.

Could you explain this point a little more please.

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