From 8a131ac2cd9418b18e5239a8fbdc2f18a5885fe4 Mon Sep 17 00:00:00 2001
From: andreas 'randy' weinberger <vdr@smue.org>
Date: Sun, 23 Jan 2011 21:14:23 +0100
Subject: feature: display menu entries for span only if the plugin is loaded

---
 menu.c   |  7 +++++--
 plugin.c | 13 +++++++++++++
 setup.c  |  5 +++--
 setup.h  |  3 ++-
 4 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/menu.c b/menu.c
index 0d2f208..a23cd98 100644
--- a/menu.c
+++ b/menu.c
@@ -75,8 +75,11 @@ cGraphLCDMenuSetup::cGraphLCDMenuSetup()
     Add(new cMenuEditIntItem(tr("Brightness on user activity"), &newGraphLCDSetup.BrightnessActive, 0, 100));
     Add(new cMenuEditIntItem(tr("Brightness on user inactivity"), &newGraphLCDSetup.BrightnessIdle, 0, 100));
     Add(new cMenuEditIntItem(tr("Brightness delay [s]"), &newGraphLCDSetup.BrightnessDelay, 0, 600));
-    Add(new cMenuEditBoolItem(tr("Show spectrum analyzer"), &newGraphLCDSetup.enableSpectrumAnalyzer));
-    Add(new cMenuEditBoolItem(tr("Show analyzer volume"), &newGraphLCDSetup.SAShowVolume));
+    if (newGraphLCDSetup.pluginSpectrumAnalyzer)
+    {
+      Add(new cMenuEditBoolItem(tr("Show spectrum analyzer"), &newGraphLCDSetup.enableSpectrumAnalyzer));
+      Add(new cMenuEditBoolItem(tr("Show analyzer volume"), &newGraphLCDSetup.SAShowVolume));
+    }
 }
 
 void cGraphLCDMenuSetup::Store()
diff --git a/plugin.c b/plugin.c
index 0710c81..f100c2b 100644
--- a/plugin.c
+++ b/plugin.c
@@ -177,6 +177,19 @@ bool cPluginGraphLCD::Start()
 {
     int count;
 
+    for (int i = 0; ; i++) {
+      cPlugin *p = cPluginManager::GetPlugin(i);
+      if (p) {
+        if (strstr(p->Name(), "span")) {
+          isyslog("graphlcd plugin: found %s (%s) plugin\n", p->Name(), p->Version());
+          GraphLCDSetup.pluginSpectrumAnalyzer=1;
+        };
+      } else {
+        break;
+      }
+    }
+                                                              
+
     dsyslog("graphlcd plugin: waiting for display thread to get ready");
     for (count = 0; count < 1200; count++)
     {
diff --git a/setup.c b/setup.c
index d45fdfb..10631d5 100644
--- a/setup.c
+++ b/setup.c
@@ -27,7 +27,6 @@
 
 #include "setup.h"
 
-
 cGraphLCDSetup GraphLCDSetup;
 
 cGraphLCDSetup::cGraphLCDSetup(void)
@@ -53,7 +52,8 @@ cGraphLCDSetup::cGraphLCDSetup(void)
     BrightnessActive(100),
     BrightnessIdle(100),
     BrightnessDelay(30),
-    enableSpectrumAnalyzer(1), //span
+    pluginSpectrumAnalyzer(0), // SPAN loaded?
+    enableSpectrumAnalyzer(1),
     SAShowVolume(1)
 {
 }
@@ -92,6 +92,7 @@ void cGraphLCDSetup::CopyFrom(const cGraphLCDSetup * source)
     BrightnessActive = source->BrightnessActive;
     BrightnessIdle = source->BrightnessIdle;
     BrightnessDelay = source->BrightnessDelay;
+    pluginSpectrumAnalyzer = source->pluginSpectrumAnalyzer;
     enableSpectrumAnalyzer = source->enableSpectrumAnalyzer;
     SAShowVolume = source->SAShowVolume;
 }
diff --git a/setup.h b/setup.h
index 2796856..ec73f25 100644
--- a/setup.h
+++ b/setup.h
@@ -54,7 +54,8 @@ public:
     int BrightnessActive;
     int BrightnessIdle;
     int BrightnessDelay;
-    int enableSpectrumAnalyzer; //span
+    int pluginSpectrumAnalyzer;
+    int enableSpectrumAnalyzer;
     int SAShowVolume;
 
 public:
-- 
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