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video_common: Added pixel frequency computation function.

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There are now two functions used for this purpose:
- u32 XVid_GetPixelClockHzByHVFr(u32 HTotal, u32 VTotal, u8 Fr);
- u32 XVid_GetPixelClockHzByVmId(XVid_VideoMode VmId);

Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion 2015-01-13 14:12:27 -08:00 • committed by Nava kishore Manne
parent 2414cc6832
commit c9ef03a85f
2 changed files with 8 additions and 2 deletions
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7
XilinxProcessorIPLib/drivers/video_common/src/xvid.c
View file

@ -53,7 +53,12 @@
#include "xvid.h" #include "xvid.h"
u32 XVid_GetPixelClockHz(XVid_VideoMode VmId) u32 XVid_GetPixelClockHzByHVFr(u32 HTotal, u32 VTotal, u8 Fr)
{
return (HTotal * VTotal * Fr);
}
u32 XVid_GetPixelClockHzByVmId(XVid_VideoMode VmId)
{ {
u32 ClkHz; u32 ClkHz;
XVid_VideoTimingMode *VmPtr; XVid_VideoTimingMode *VmPtr;

3
XilinxProcessorIPLib/drivers/video_common/src/xvid.h
View file

@ -338,7 +338,8 @@ extern const XVid_VideoTimingMode XVid_VideoTimingModes[XVID_VM_NUM_SUPPORTED];
/**************************** Function Prototypes *****************************/ /**************************** Function Prototypes *****************************/
u32 XVid_GetPixelClockHz(XVid_VideoMode VmId); u32 XVid_GetPixelClockHzByHVFr(u32 HTotal, u32 VTotal, u8 Fr);
u32 XVid_GetPixelClockHzByVmId(XVid_VideoMode VmId);
XVid_VideoFormat XVid_IsVideoFormatInterlaced(XVid_VideoMode VmId); XVid_VideoFormat XVid_IsVideoFormatInterlaced(XVid_VideoMode VmId);
#endif /* XVID_H_ */ #endif /* XVID_H_ */