Hi Nickolay, Thank you for the reply. We cann't change the library as we have object version only and so, will discuss with gtk-devel-list
Regards Calvin > ÷ óÒÄ, 18/01/2006 × 17:15 +0800, [EMAIL PROTECTED] ÐÉÛÅÔ: >> Hello, >> >> We are facing some problem with the byte ordering of the GdkPixbuf. >> >> In our application, we are using gdk_pixbuf_new(GDK_COLORSPACE_RGB, >> TRUE, >> depth, width, height) for getting a GdkPixBuf * and from the pixbuf we >> are >> getting the the guchar * picturebuf. We store our image data in the >> picturebuf in the following order: >> picturebuf + = blue; >> picturebuf + 1 = green; >> picturebuf + 2 = Red; >> picutrebuf + 3 = alpha; >> >> But, from the documentation we found that GdkPixBuf uses >> picturebuf + = red; >> picturebuf + 1 = green; >> picturebuf + 2 = blue; >> picturebuf + 3 = alpha; >> >> Because of the mismatch in the byte ordering, ie GTK using LSB and our >> application layer using MSB, we are required to swap byte and byte 2. >> Our >> system is based on Little Endian and GTK version 2.4 > >> Is there a way to configure the byte ordering in GTK/GDK ? Since I am >> new >> to gtk environment, request you to guide me. >> >> Thanks and Regards >> Calvin > > That is not a LSB vs MSB problem (it's all about integers, not colors), > you are using GDK_COLORSPACE_BGR (Blue first. Not yet exists in gtk) and > create pixbuf with GDK_COLORSPACE_RGB. Since other colorspaces like BGR > and YUV are not supported by gdk-pixbuf yet, you need to convert data > manually from your picturebuf. > > Are you extensively mixing pixbuf/your library operations? In that case > it may have sense to modify your library. Another thing is to support > different colorspaces in gdk-pixbuf. It should not be hard to do I > think, probably it may have sense to discuss this problem on gtk-devel- > list and write a patch. > > > > _______________________________________________ gnome-devel-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gnome-devel-list
