Added setters for system volume

src/fenrir/commands/commands/dec_alsa_volume.py

@@ -0,0 +1,39 @@
+#!/bin/python
+# -*- coding: utf-8 -*-
+
+# Fenrir TTY screen reader
+# By Chrys, Storm Dragon, and contributers.
+
+initialized = False
+try:
+    import alsaaudio
+    initialized = True
+except:
+    pass
+
+from core import debug
+
+class command():
+    def __init__(self):
+        pass
+    def initialize(self, environment):
+        self.env = environment
+    def shutdown(self):
+        pass
+    def getDescription(self):
+        return _("Decrease system volume")         
+
+    def run(self):
+        if not initialized:
+           self.env['runtime']['outputManager'].presentText(_('alsaaudio is not installed'), interrupt=True) 
+           return
+        mixer = alsaaudio.Mixer()
+        value = mixer.getvolume()[0]
+        value = value - 5
+        if value < 5:
+            value = 5
+        mixer.setvolume(value)
+        self.env['runtime']['outputManager'].presentText(_("{0} percent system volume").format(value), interrupt=True)
+
+    def setCallback(self, callback):
+        pass

src/fenrir/commands/commands/inc_alsa_volume.py

@@ -0,0 +1,39 @@
+#!/bin/python
+# -*- coding: utf-8 -*-
+
+# Fenrir TTY screen reader
+# By Chrys, Storm Dragon, and contributers.
+
+initialized = False
+try:
+    import alsaaudio
+    initialized = True
+except:
+    pass
+
+from core import debug
+
+class command():
+    def __init__(self):
+        pass
+    def initialize(self, environment):
+        self.env = environment
+    def shutdown(self):
+        pass
+    def getDescription(self):
+        return _("Increase system volume")         
+
+    def run(self):
+        if not initialized:
+           self.env['runtime']['outputManager'].presentText(_('alsaaudio is not installed'), interrupt=True) 
+           return
+        mixer = alsaaudio.Mixer()
+        value = mixer.getvolume()[0]
+        value = value + 5
+        if value > 100:
+            value = 100
+        mixer.setvolume(value)
+        self.env['runtime']['outputManager'].presentText(_("{0} percent system volume").format(value), interrupt=True)
+
+    def setCallback(self, callback):
+        pass