frontend: use const char pointers in getDelSys()

this avoids a lot of ugly casts, and the pointer targets were
const char* anyway


Origin commit data
------------------
Branch: ni/coolstream
Commit: cc24b2cf65
Author: Stefan Seyfried <seife@tuxbox-git.slipkontur.de>
Date: 2015-02-09 (Mon, 09 Feb 2015)



------------------
This commit was generated by Migit

src/gui/scan.cpp

@@ -124,7 +124,7 @@ void CScanTs::testFunc()
 {
 	int w = x + width - xpos2;
 	char buffer[128];
-	char *f, *s, *m, *f2;
+	const char *f, *s, *m, *f2;
 
 	if (CFrontend::isSat(delsys)) {
 		CFrontend::getDelSys(TP.feparams.delsys, TP.feparams.fec_inner, TP.feparams.modulation, f, s, m);
@@ -412,7 +412,7 @@ neutrino_msg_t CScanTs::handleMsg(neutrino_msg_t msg, neutrino_msg_data_t data)
 		case NeutrinoMessages::EVT_SCAN_REPORT_FREQUENCYP:
 			{
 				FrontendParameters *feparams = (FrontendParameters*) data;
-				char * f, *s, *m;
+				const char *f, *s, *m;
 
 				CFrontend::getDelSys(feparams->delsys, feparams->fec_inner, feparams->modulation,  f, s, m);
 				uint32_t freq = feparams->frequency/1000;

src/zapit/include/zapit/frontend_c.h

@@ -207,7 +207,7 @@ class CFrontend
 		uint16_t			getSignalStrength(void) const;
 		fe_status_t			getStatus(void) const;
 		uint32_t			getUncorrectedBlocks(void) const;
-		void				getDelSys(int f, int m, char * &fec, char * &sys, char * &mod);
+		void				getDelSys(int f, int m, const char * &fec, const char * &sys, const char * &mod);
 		void				getFEInfo(void);
 
 		int32_t				getCurrentSatellitePosition() { return currentSatellitePosition; }
@@ -272,7 +272,7 @@ class CFrontend
 		satellite_map_t &		getSatellites() { return satellites; }
 		void				setSatellites(satellite_map_t satmap) { satellites = satmap; }
 		int				getNumber() { return fenumber; };
-		static void			getDelSys(delivery_system_t delsys, int f, int m, char * &fec, char * &sys, char * &mod);
+		static void			getDelSys(delivery_system_t delsys, int f, int m, const char * &fec, const char * &sys, const char * &mod);
 		fe_work_mode_t			getMode() { return femode; }
 		void				setMode(int mode) {femode = (fe_work_mode_t) mode; }
 		int				getMaster() { return masterkey; }

src/zapit/src/frontend.cpp

@@ -737,7 +737,7 @@ struct dvb_frontend_event CFrontend::getEvent(void)
 	return event;
 }
 
-void CFrontend::getDelSys(int f, int m, char *&fec, char *&sys, char *&mod)
+void CFrontend::getDelSys(int f, int m, const char *&fec, const char *&sys, const char *&mod)
 {
 	return getDelSys(getCurrentDeliverySystem(), f, m, fec, sys, mod);
 }
@@ -811,25 +811,25 @@ void CFrontend::getXMLDelsysFEC(fe_code_rate_t xmlfec, delivery_system_t & delsy
 	}
 }
 
-void CFrontend::getDelSys(delivery_system_t delsys, int f, int m, char *&fec, char *&sys, char *&mod)
+void CFrontend::getDelSys(delivery_system_t delsys, int f, int m, const char *&fec, const char *&sys, const char *&mod)
 {
 	switch (delsys) {
 	case DVB_S:
-		sys = (char *)"DVB";
-		mod = (char *)"QPSK";
+		sys = "DVB";
+		mod = "QPSK";
 		break;
 	case DVB_S2:
-		sys = (char *)"DVB-S2";
+		sys = "DVB-S2";
 		switch (m) {
 		case QPSK:
-			mod = (char *)"QPSK";
+			mod = "QPSK";
 			break;
 		case PSK_8:
-			mod = (char *)"8PSK";
+			mod = "8PSK";
 			break;
 		default:
 			printf("[frontend] unknown modulation %d!\n", m);
-			mod = (char *)"UNKNOWN";
+			mod = "UNKNOWN";
 		}
 		break;
 	case DVB_C:
@@ -837,103 +837,103 @@ void CFrontend::getDelSys(delivery_system_t delsys, int f, int m, char *&fec, ch
 	case DTMB:
 		switch(delsys) {
 		case DVB_C:
-			sys = (char *)"DVB-C(Annex A)";
+			sys = "DVB-C(Annex A)";
 			break;
 		case DVB_T:
-			sys = (char *)"DVB-T";
+			sys = "DVB-T";
 			break;
 		case DVB_T2:
-			sys = (char *)"DVB-T2";
+			sys = "DVB-T2";
 			break;
 		case DTMB:
-			sys = (char *)"DTMB";
+			sys = "DTMB";
 			break;
 		default:
 			printf("[frontend] unknown delsys %d!\n", delsys);
-			sys = (char *)"UNKNOWN";
+			sys = "UNKNOWN";
 			break;
 		}
 
 		switch (m) {
 		case QAM_16:
-			mod = (char *)"QAM_16";
+			mod = "QAM_16";
 			break;
 		case QAM_32:
-			mod = (char *)"QAM_32";
+			mod = "QAM_32";
 			break;
 		case QAM_64:
-			mod = (char *)"QAM_64";
+			mod = "QAM_64";
 			break;
 		case QAM_128:
-			mod = (char *)"QAM_128";
+			mod = "QAM_128";
 			break;
 		case QAM_256:
-			mod = (char *)"QAM_256";
+			mod = "QAM_256";
 			break;
 #if _HAVE_DVB57
 		case QAM_4_NR:
-			mod = (char *)"QAM_4_NR";
+			mod = "QAM_4_NR";
 			break;
 #endif
 		case QPSK:
 			if (delsys == DVB_T || delsys == DVB_T2 || delsys == DTMB) {
-				mod = (char *)"QPSK"; // AKA QAM_4
+				mod = "QPSK"; // AKA QAM_4
 				break;
 			}
 			/* fallthrouh for FE_QAM... */
 		case QAM_AUTO:
 		default:
-			mod = (char *)"QAM_AUTO";
+			mod = "QAM_AUTO";
 			break;
 		}
 		break;
 	default:
 		INFO("unknown delsys %d!", delsys);
-		sys = (char *)"UNKNOWN";
-		mod = (char *)"UNKNOWN";
+		sys = "UNKNOWN";
+		mod = "UNKNOWN";
 		break;
 	}
 
 	switch (f) {
 	case FEC_1_2:
-		fec = (char *)"1/2";
+		fec = "1/2";
 		break;
 	case FEC_2_3:
-		fec = (char *)"2/3";
+		fec = "2/3";
 		break;
 	case FEC_3_4:
-		fec = (char *)"3/4";
+		fec = "3/4";
 		break;
 	case FEC_4_5:
-		fec = (char *)"4/5";
+		fec = "4/5";
 		break;
 	case FEC_5_6:
-		fec = (char *)"5/6";
+		fec = "5/6";
 		break;
 	case FEC_6_7:
-		fec = (char *)"6/7";
+		fec = "6/7";
 		break;
 	case FEC_7_8:
-		fec = (char *)"7/8";
+		fec = "7/8";
 		break;
 	case FEC_8_9:
-		fec = (char *)"8/9";
+		fec = "8/9";
 		break;
 	case FEC_3_5:
-		fec = (char *)"3/5";
+		fec = "3/5";
 		break;
 	case FEC_9_10:
-		fec = (char *)"9/10";
+		fec = "9/10";
 		break;
 #if _HAVE_DVB57
 	case FEC_2_5:
-		fec = (char *)"2/5";
+		fec = "2/5";
 		break;
 #endif
 	default:
 		INFO("unknown FEC: %d!", f);
 	case FEC_AUTO:
-		fec = (char *)"AUTO";
+		fec = "AUTO";
 		break;
 	}
 }
@@ -1597,7 +1597,7 @@ int CFrontend::setParameters(transponder *TP, bool nowait)
 
 
 	freq		= (int) feparams.frequency;
-	char * f, *s, *m;
+	const char *f, *s, *m;
 	bool high_band;
 
 	switch (feparams.delsys) {

src/zapit/src/transponder.cpp

@@ -198,7 +198,7 @@ char transponder::pol(unsigned char p)
 std::string transponder::description()
 {
 	char buf[128] = {0};
-	char *f, *s, *m, *f2;
+	const char *f, *s, *m, *f2;
 
 	if (CFrontend::isSat(feparams.delsys)) {
 		CFrontend::getDelSys(feparams.delsys, getFEParams()->fec_inner, getFEParams()->modulation,  f, s, m);