[vdr] Re: ANNOUNCE: Softdevice plugin. Use /dev/fb for output

[Holger Waechtler <holger@convergence.de>]

alexw@undercover.mine.nu wrote:
> Hi Roland,
>
>
> That's really a nice job. I hope you still improve your plugin ;-)
>
> I did some tests with a Matrox G250 card. The result is not fabulous. As you 
> mention in the REAME, the fbdev output is not OK. I am able to see the 
> startup channel message OSD and a VDR crash. Sometimes with a I-Frame in 
> background.
>
> As fbdev was not working I decided to switch to the directfb output 
> possibility. I took today's CVS (directfb and dfb++). After complete 
> installation I am able to run the fb_cpuload test program. That part is OK.
> The plugins compiles without any warning. But when I run VDR I receive an 
> error dealing with dfb_config. 
> .../libdirectfb_fbdev.o: undefined symbol: dvb_config
>
> I did some investigation and the error comes from the Creation of the 
> dfb = DirectFB::Create(); line. 
sounds like the directfb version that was used when linking the 
softdevice plugin does not matches the one used when compiling the 
requested system module (e.g. 
/usr/local/lib/directfb-0.9.21/systems/libdirectfb_fbdev.so or 
/usr/local/lib/directfb-0.9.21/systems/libdirectfb_sdl.so).

Have you had multiple directfb versions installed in the past? Does your 
distribution installs directfb somewhere? if so either uninstall the old 
files or force the softdevice plugin to use the correct directfb version 
(by using the correct directfb-config script and setting up 
LD_LIBRARY_PATH correctly).

In any case you might want to ask such directfb related questions on the 
directfb mailing list - the people there will be happy to give you all 
the help you need to get directfb running.


> Q2: Is there any special reason to use a IDirectFB object instead of an 
> IDirectFB_C object?
class DirectFB is the DFB++ class. IDirectFB_C is not an object but the 
corresponding C struct. dfb++.h renames the C structs and adds the _C 
suffix in order to avoid name clashes:

---- from dfb++.h: ------

#define IDirectFB              IDirectFB_C
#define IDirectFBDisplayLayer  IDirectFBDisplayLayer_C
#define IDirectFBSurface       IDirectFBSurface_C
#define IDirectFBPalette       IDirectFBPalette_C
#define IDirectFBWindow        IDirectFBWindow_C
#define IDirectFBInputDevice   IDirectFBInputDevice_C
#define IDirectFBEventBuffer   IDirectFBEventBuffer_C
#define IDirectFBFont          IDirectFBFont_C
#define IDirectFBImageProvider IDirectFBImageProvider_C
#define IDirectFBVideoProvider IDirectFBVideoProvider_C
#define IDirectFBDataBuffer    IDirectFBDataBuffer_C

#include <directfb.h>

#undef IDirectFB
#undef IDirectFBDisplayLayer
#undef IDirectFBSurface
#undef IDirectFBPalette
#undef IDirectFBWindow
#undef IDirectFBInputDevice
#undef IDirectFBEventBuffer
#undef IDirectFBFont
#undef IDirectFBImageProvider
#undef IDirectFBVideoProvider
#undef IDirectFBDataBuffer

class DirectFB;
class IDirectFB;
class IDirectFBDisplayLayer;
class IDirectFBSurface;
class IDirectFBPalette;
class IDirectFBWindow;
class IDirectFBInputDevice;
class IDirectFBEventBuffer;
class IDirectFBFont;
class IDirectFBImageProvider;
class IDirectFBVideoProvider;
class IDirectFBDataBuffer;

-------------------------

hope that helps,

Holger



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