Re: [fpc-pascal] nested macros in C headers
2011/4/24 Paulo Costa : > Probably you are right. Let me know how does it works for you. I have further studied the entire v4l thing and there is something that could be improved in the SdpoVideo4L2 component: There exists a library libv4l2 that is an official part of the Linux V4l2 project. It implements the format conversions that were part of each individual V4L1 driver but are not allowed to be done in kernel-space anymore with V4L2 and have all been moved into one user space library and should be used by all applications using the V4L API. This library exports functions that wrap open/close/ioctl/mmap/munmap and work like their native counterparts except that they intercept certain ioctls and make the cameras all magically support not only their native pixel formats but also at least BGR24 and YUV420p as a common denominator. The decompression and/or format conversion will happen transparently on the fly, it will be as if the driver itself natively supports this format. http://hansdegoede.livejournal.com/3636.html This means the only change that is needed to SdpoVideo4L2 would be to replace all calls to FpOpen(), FpIoctl(), FpMmap() etc... with calls to v4l2_open(), v4l2_ioctl(), v4l2_mmap() etc. and all existing (known) V4L2 cameras could then be set to BGR24 and would deliver uncompressed 24bit BGR video. If I have some time next weekend I will make a patch against SdpoVideo4L2 (with an ifdef) that allows enabling this functionality. Bernd ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] fpc graph
On 05/02/2011 04:03 PM, johnelee1...@googlemail.com wrote: thanks - what are the features of ptcgraph vs graph? - I just want simple line graphs in win eg of data from a file, so was guessing that graph, from its name, was the 'best' option. J Ptcgraph is new (fpc 2.4.4 will be the first stable release that has it) and was designed to be a better implementation of graph. Since it's still new, it probably needs more testing. It should have roughly the same feature set, but with better compatibility and consistency across all platforms, as well as better emulation of all the DOS modes from TP7 (CGA, MCGA, EGA, VGA, Hercules) as well as the VESA modes from the go32v2 graph unit. It doesn't have all the extra windowsisms exposed in the win32 graph unit, because they're not portable. It also still doesn't have an equivalent to the winmouse unit, but I'm planning to make a similar ptcmouse unit sometime soon :) ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: Re: [fpc-pascal] fpc graph
Hi John, if you use Lazarus, you can try the component TAChart, it's awesome. For more info, please check this out: http://wiki.lazarus.freepascal.org/TAChart P.S.: The wiki currently is not working, but usually it works. So, if you get an error message, please try again in a couple of ours. Leonardo M. Ramé http://leonardorame.blogspot.com --- On Mon, 5/2/11, johnelee1...@googlemail.com wrote: From: johnelee1...@googlemail.com Subject: Re: Re: [fpc-pascal] fpc graph To: "FPC-Pascal users discussions" Date: Monday, May 2, 2011, 10:03 AM thanks - what are the features of ptcgraph vs graph? - I just want simple line graphs in win eg of data from a file, so was guessing that graph, from its name, was the 'best' option. J On , Nikolay Nikolov wrote: > On 05/02/2011 02:58 PM, John Lee wrote: > > > Been trying to use the windows graph from 2.4 release svn, running on > standard xp sp3 laptop, with 1024*768 resolution screen setting, 96dpi, intel > mobile express 965 chipset according to control panel. > > > > > Note that you can also try unit ptcgraph (and ptccrt) and see if it works > better for you. > > ___ > > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > > http://lists.freepascal.org/mailman/listinfo/fpc-pascal > > -Inline Attachment Follows- ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
