Changed 'unsigned' to 'signed' in some places to avoid trouble with abs() in gcc6+

CONTRIBUTORS

@@ -2850,6 +2850,7 @@ Derek Kelly <user.vdr@gmail.com>
  for suggesting to add ARGSDIR to the ONEDIR section of Make.config.template
  for suggesting to change the naming of "binary skip mode" to "adaptive skip mode"
  for suggesting to make the -u option also accept a numerical user id
+ for reporting a problem with abs() in gcc6+ when called with an unsigned variable
 
 Marcel Unbehaun <frostworks@gmx.de>
  for adding cRecordingInfo::GetEvent()

HISTORY

@@ -8898,3 +8898,5 @@ Video Disk Recorder Revision History
   now only triggered if there acually is more than one CAM in the system.
 - Fixed updating the elapsed/remaining time in the progress display during fast
   forward/rewind.
+- Changed 'unsigned' to 'signed' in some places to avoid trouble with abs() in
+  gcc6+ (reported by Derek Kelly).

diseqc.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: diseqc.c 3.4 2015/01/26 12:02:14 kls Exp $
+ * $Id: diseqc.c 4.1 2017/01/09 15:10:40 kls Exp $
  */
 
 #include "diseqc.h"
@@ -253,10 +253,10 @@ bool cDiseqc::Parse(const char *s)
   return result;
 }
 
-uint cDiseqc::SetScrFrequency(uint SatFrequency, const cScr *Scr, uint8_t *Codes) const
+int cDiseqc::SetScrFrequency(int SatFrequency, const cScr *Scr, uint8_t *Codes) const
 {
   if ((Codes[0] & 0xF0) == 0x70 ) { // EN50607 aka JESS
-     uint t = SatFrequency == 0 ? 0 : (SatFrequency - 100);
+     int t = SatFrequency == 0 ? 0 : (SatFrequency - 100);
      if (t < 2048 && Scr->Channel() >= 0 && Scr->Channel() < 32) {
         Codes[1] = t >> 8 | Scr->Channel() << 3;
         Codes[2] = t;
@@ -266,7 +266,7 @@ uint cDiseqc::SetScrFrequency(uint SatFrequency, const cScr *Scr, uint8_t *Codes
         }
      }
   else { // EN50494 aka Unicable
-     uint t = SatFrequency == 0 ? 0 : (SatFrequency + Scr->UserBand() + 2) / 4 - 350; // '+ 2' together with '/ 4' results in rounding!
+     int 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) {
         Codes[3] = t >> 8 | (t == 0 ? 0 : scrBank << 2) | Scr->Channel() << 5;
         Codes[4] = t;
@@ -399,7 +399,7 @@ const char *cDiseqc::GetCodes(const char *s, uchar *Codes, uint8_t *MaxCodes) co
   return NULL;
 }
 
-cDiseqc::eDiseqcActions cDiseqc::Execute(const char **CurrentAction, uchar *Codes, uint8_t *MaxCodes, const cScr *Scr, uint *Frequency) const
+cDiseqc::eDiseqcActions cDiseqc::Execute(const char **CurrentAction, uchar *Codes, uint8_t *MaxCodes, const cScr *Scr, int *Frequency) const
 {
   if (!*CurrentAction)
      *CurrentAction = commands;

diseqc.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: diseqc.h 3.1 2013/06/12 11:52:17 kls Exp $
+ * $Id: diseqc.h 4.1 2017/01/09 15:11:19 kls Exp $
  */
 
 #ifndef __DISEQC_H
@@ -86,7 +86,7 @@ private:
   mutable int scrBank;
   char *commands;
   bool parsing;
-  uint SetScrFrequency(uint SatFrequency, const cScr *Scr, uint8_t *Codes) const;
+  int SetScrFrequency(int SatFrequency, const cScr *Scr, uint8_t *Codes) const;
   int SetScrPin(const cScr *Scr, uint8_t *Codes) const;
   const char *Wait(const char *s) const;
   const char *GetPosition(const char *s) const;
@@ -96,7 +96,7 @@ public:
   cDiseqc(void);
   ~cDiseqc();
   bool Parse(const char *s);
-  eDiseqcActions Execute(const char **CurrentAction, uchar *Codes, uint8_t *MaxCodes, const cScr *Scr, uint *Frequency) const;
+  eDiseqcActions Execute(const char **CurrentAction, uchar *Codes, uint8_t *MaxCodes, const cScr *Scr, int *Frequency) const;
       ///< Parses the DiSEqC commands and returns the appropriate action code
       ///< with every call. CurrentAction must be the address of a character pointer,
       ///< which is initialized to NULL. This pointer is used internally while parsing

dvbdevice.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: dvbdevice.c 4.3 2016/11/07 13:55:58 kls Exp $
+ * $Id: dvbdevice.c 4.4 2017/01/09 15:11:39 kls Exp $
  */
 
 #include "dvbdevice.h"
@@ -329,7 +329,7 @@ private:
   void ClearEventQueue(void) const;
   bool GetFrontendStatus(fe_status_t &Status) const;
   cPositioner *GetPositioner(void);
-  void ExecuteDiseqc(const cDiseqc *Diseqc, unsigned int *Frequency);
+  void ExecuteDiseqc(const cDiseqc *Diseqc, int *Frequency);
   void ResetToneAndVoltage(void);
   bool SetFrontend(void);
   virtual void Action(void);
@@ -696,7 +696,7 @@ cPositioner *cDvbTuner::GetPositioner(void)
   return positioner;
 }
 
-void cDvbTuner::ExecuteDiseqc(const cDiseqc *Diseqc, unsigned int *Frequency)
+void cDvbTuner::ExecuteDiseqc(const cDiseqc *Diseqc, int *Frequency)
 {
   if (!lnbPowerTurnedOn) {
      CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_13)); // must explicitly turn on LNB power
@@ -806,7 +806,7 @@ bool cDvbTuner::SetFrontend(void)
 
   SETCMD(DTV_DELIVERY_SYSTEM, frontendType);
   if (frontendType == SYS_DVBS || frontendType == SYS_DVBS2) {
-     unsigned int frequency = channel.Frequency();
+     int frequency = channel.Frequency();
      if (Setup.DiSEqC) {
         if (const cDiseqc *diseqc = Diseqcs.Get(device->CardIndex() + 1, channel.Source(), frequency, dtp.Polarization(), &scr)) {
            frequency -= diseqc->Lof();
@@ -829,7 +829,7 @@ bool cDvbTuner::SetFrontend(void)
         }
      else {
         int tone = SEC_TONE_OFF;
-        if (frequency < (unsigned int)Setup.LnbSLOF) {
+        if (frequency < Setup.LnbSLOF) {
            frequency -= Setup.LnbFrequLo;
            tone = SEC_TONE_OFF;
            }

remux.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: remux.c 4.3 2016/12/22 12:58:20 kls Exp $
+ * $Id: remux.c 4.4 2017/01/09 15:05:05 kls Exp $
  */
 
 #include "remux.h"
@@ -1629,7 +1629,7 @@ int cFrameDetector::Analyze(const uchar *Data, int Length)
                           Div += parser->IFrameTemporalReferenceOffset();
                        if (Div <= 0)
                           Div = 1;
-                       uint32_t Delta = ptsValues[0] / Div;
+                       int Delta = ptsValues[0] / Div;
                        // determine frame info:
                        if (isVideo) {
                           if (Delta == 3753)