call drawdevices only every 500ms, added profiling code

Makefile

@@ -6,6 +6,9 @@
 # External image lib to use: imagemagick, graphicsmagick
 IMAGELIB = imagemagick
 
+# Config
+CONFIG := #-DDOPROFILE #           enable profiling code
+
 # The official name of this plugin.
 PLUGIN = skindesigner
 
@@ -42,7 +45,7 @@ PACKAGE = vdr-$(ARCHIVE)
 SOFILE = libvdr-$(PLUGIN).so
 
 ### Includes and Defines and Dependencies:
-DEFINES += -DPLUGIN_NAME_I18N='"$(PLUGIN)"'
+DEFINES += -DPLUGIN_NAME_I18N='"$(PLUGIN)"' $(CONFIG)
 DEFINES += $(shell xml2-config --cflags)
 
 INCLUDES += $(shell pkg-config --cflags freetype2 fontconfig)

displaychannel.c

@@ -18,6 +18,7 @@ cSDDisplayChannel::cSDDisplayChannel(cTemplate *channelTemplate, bool WithInfo)
     currentLast = 0;
     channelChange = false;
     initial = true;
+    devicesLast = cTimeMs::Now();
 
     channelView = new cDisplayChannelView(channelTemplate->GetRootView());
     if (!channelView->createOsd()) {
@@ -185,7 +186,10 @@ void cSDDisplayChannel::Flush(void) {
         channelView->DrawScreenResolution();
         channelView->DrawSignal();
         channelView->DrawAudioInfo();
-        channelView->DrawDevices(initial);
+        if (initial || cTimeMs::Now() - devicesLast  > 500) {
+            channelView->DrawDevices(initial);
+            devicesLast = cTimeMs::Now();
+        }
     } else {
         channelView->ClearStatusIcons();
         channelView->ClearScreenResolution();

displaychannel.h

@@ -18,6 +18,7 @@ private:
     int lastSignalQuality;
     int lastScreenWidth;
     int currentLast;
+    uint64_t devicesLast;
     const cEvent *present;
     void SetProgressBar(const cEvent *present);
 public:

libcore/helpers.c

@@ -167,9 +167,12 @@ vector<string>& splitstring::split(char delim, int rep) {
     return flds;
 }
 
-cStopWatch::cStopWatch(void) {
+cStopWatch::cStopWatch(const char* message) {
     start = cTimeMs::Now();
     last = start;
+    if (message) {
+        dsyslog("skindesigner: Starting StopWatch %s", message);        
+    }
 }
 
 void cStopWatch::Report(const char* message) {

libcore/helpers.h

@@ -33,7 +33,7 @@ private:
 	uint64_t start;
 	uint64_t last;
 public:
-	cStopWatch(void);
+	cStopWatch(const char* message = NULL);
 	~cStopWatch(void) {};
 	void Report(const char* message);
 	void Stop(const char* message);

views/displaychannelview.c

@@ -364,8 +364,18 @@ void cDisplayChannelView::DrawSignal(void) {
     }
     time_t Now = time(NULL);
     if (Now != lastSignalDisplay) {
+#ifdef DOPROFILE
+        cStopWatch watch("DrawSignal");
+#endif
         int SignalStrength = cDevice::ActualDevice()->SignalStrength();
+#ifdef DOPROFILE
+        watch.Report("SignalStrength");
+#endif
         int SignalQuality = cDevice::ActualDevice()->SignalQuality();
+#ifdef DOPROFILE
+        watch.Report("SignalQuality");
+        watch.Stop("DrawSignal");
+#endif
         if (SignalStrength < 0) SignalStrength = 0;
         if (SignalQuality < 0) SignalQuality = 0;
         if ((SignalStrength == 0)&&(SignalQuality==0))

views/viewhelpers.c

@@ -1,5 +1,6 @@
 #include <vdr/menu.h>
 #include "../config.h"
+#include "../libcore/helpers.h"
 #include "viewhelpers.h"
 
 cViewHelpers::cViewHelpers(void) {
@@ -28,6 +29,9 @@ void cViewHelpers::InitDevices(void) {
 }
 
 bool cViewHelpers::SetDevices(bool initial, map<string,int> *intTokens, vector<map<string,string> > *devices) {
+#ifdef DOPROFILE
+    cStopWatch watch("SetDevices");
+#endif
     int numDevices = cDevice::NumDevices();
     if (!initial) {
         //check if drawing is necessary
@@ -37,12 +41,24 @@ bool cViewHelpers::SetDevices(bool initial, map<string,int> *intTokens, vector<m
             if (!device || !device->NumProvidedSystems()) {
                 continue;
             }
-            if ((device->SignalStrength() != lastSignalStrength[i]) || (device->SignalQuality() != lastSignalQuality[i])) {
+            int signalStrength = device->SignalStrength();
+#ifdef DOPROFILE
+            watch.Report(*cString::sprintf("SignalStrength() device %d", i));
+#endif
+            int signalQuality = device->SignalQuality();
+#ifdef DOPROFILE
+            watch.Report(*cString::sprintf("SignalQuality() device %d", i));
+#endif
+
+            if ((signalStrength != lastSignalStrength[i]) || (signalQuality != lastSignalQuality[i])) {
                 changed = true;
                 break;
-            }
+            }            
         }
         if (!changed) {
+#ifdef DOPROFILE
+            watch.Stop("SetDevices End");
+#endif
             return false;
         }
     }
@@ -55,7 +71,6 @@ bool cViewHelpers::SetDevices(bool initial, map<string,int> *intTokens, vector<m
         else
             deviceLiveTV = primaryDevice->DeviceNumber();
     }
-
     //check currently recording devices
     for (cTimer *timer = Timers.First(); timer; timer = Timers.Next(timer)) {
         if (!timer->Recording()) {
@@ -90,7 +105,13 @@ bool cViewHelpers::SetDevices(bool initial, map<string,int> *intTokens, vector<m
             deviceVals.insert(pair< string, string >("devices[hascam]", "0"));
         }
         int signalStrength = device->SignalStrength();
+#ifdef DOPROFILE
+        watch.Report(*cString::sprintf("SignalStrength() device %d", i));
+#endif
         int signalQuality = device->SignalQuality();
+#ifdef DOPROFILE
+        watch.Report(*cString::sprintf("SignalQuality() device %d", i));
+#endif
         stringstream strCamNumber;
         strCamNumber << camNumber;
         deviceVals.insert(pair< string, string >("devices[cam]", strCamNumber.str()));
@@ -129,6 +150,8 @@ bool cViewHelpers::SetDevices(bool initial, map<string,int> *intTokens, vector<m
     }
 
     intTokens->insert(pair<string, int>("numdevices", actualNumDevices));
-    
+#ifdef DOPROFILE
+    watch.Stop("SetDevices End");
+#endif
     return true;
 }