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mirror of https://github.com/VDR4Arch/vdr.git synced 2023-10-10 13:36:52 +02:00

Added a note about rounding

This commit is contained in:
Klaus Schmidinger 2011-09-17 10:41:00 +02:00
parent fea8c9a64f
commit ffaf10c3f3

View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and * See the main source file 'vdr.c' for copyright information and
* how to reach the author. * how to reach the author.
* *
* $Id: diseqc.c 2.7 2011/09/11 13:39:48 kls Exp $ * $Id: diseqc.c 2.8 2011/09/17 10:41:00 kls Exp $
*/ */
#include "diseqc.h" #include "diseqc.h"
@ -122,7 +122,7 @@ bool cDiseqc::Parse(const char *s)
uint cDiseqc::SetScrFrequency(uint SatFrequency, const cScr *Scr, uint8_t *Codes) const uint cDiseqc::SetScrFrequency(uint SatFrequency, const cScr *Scr, uint8_t *Codes) const
{ {
uint t = SatFrequency == 0 ? 0 : (SatFrequency + Scr->UserBand() + 2) / 4 - 350; uint t = SatFrequency == 0 ? 0 : (SatFrequency + Scr->UserBand() + 2) / 4 - 350; // '+ 2' together with '/ 4' results in rounding!
if (t < 1024 && Scr->Channel() >= 0 && Scr->Channel() < 8) { if (t < 1024 && Scr->Channel() >= 0 && Scr->Channel() < 8) {
Codes[3] = t >> 8 | (t == 0 ? 0 : scrBank << 2) | Scr->Channel() << 5; Codes[3] = t >> 8 | (t == 0 ? 0 : scrBank << 2) | Scr->Channel() << 5;
Codes[4] = t; Codes[4] = t;