Hi, OK, kewl!
I don't need any sort of immediate fix, having found a work-around, at least for now. But is there anything else I need to do to help get this fixed for future generations? B^> Rgds Damon On 15 May 2012, at 21:00, Roman Kennke wrote: > Hi Damon, > >> Is anyone reading this list who is in a position to tell me if I'm even >> wrong? B^> > >> From reading the snippets you posted here: > > http://mail.openjdk.java.net/pipermail/2d-dev/2012-May/002496.html > > I think you are right, RGBA and beyond is not possible using the > jpeglib.h that is included in OpenJDK. > > However, looking at the same file of the libjpeg included in my Linux > distro, I see this: > > typedef enum { > JCS_UNKNOWN, /* error/unspecified */ > JCS_GRAYSCALE, /* monochrome */ > JCS_RGB, /* red/green/blue as specified by the > RGB_RED, RGB_GREEN, > RGB_BLUE, and RGB_PIXELSIZE macros */ > JCS_YCbCr, /* Y/Cb/Cr (also known as YUV) */ > JCS_CMYK, /* C/M/Y/K */ > JCS_YCCK, /* Y/Cb/Cr/K */ > JCS_EXT_RGB, /* red/green/blue */ > JCS_EXT_RGBX, /* red/green/blue/x */ > JCS_EXT_BGR, /* blue/green/red */ > JCS_EXT_BGRX, /* blue/green/red/x */ > JCS_EXT_XBGR, /* x/blue/green/red */ > JCS_EXT_XRGB, /* x/red/green/blue */ > /* When out_color_space it set to JCS_EXT_RGBX, JCS_EXT_BGRX, > JCS_EXT_XBGR, or JCS_EXT_XRGB during decompression, the X > byte is > undefined, and in order to ensure the best performance, > libjpeg-turbo can set that byte to whatever value it wishes. > Use > the following colorspace constants to ensure that the X byte > is set > to 0xFF, so that it can be interpreted as an opaque alpha > channel. */ > JCS_EXT_RGBA, /* red/green/blue/alpha */ > JCS_EXT_BGRA, /* blue/green/red/alpha */ > JCS_EXT_ABGR, /* alpha/blue/green/red */ > JCS_EXT_ARGB /* alpha/red/green/blue */ > } J_COLOR_SPACE; > > > It looks like a lot of color spaces have been added in the meantime. :-) > I believe the problems you mention should be possible to resolve by > upgrading the shipped libjpeg. (Or, even better, use the system > installed libjpeg as IcedTea does, and fix the colorspace verification > code to include the extended color spaces.) > > Regards, > Roman >
