From 8d6a064f7a6f3b38ddf2940290b0ebdc6b4d5356 Mon Sep 17 00:00:00 2001
From: Andreas Monzner <andreas.monzner@multimedia-labs.de>
Date: Thu, 13 Mar 2008 19:15:07 +0000
Subject: [PATCH 1/1] add config option to enable/disable ac3 downmix (when its
 possible with used hardware)

---
 data/setup.xml                                       |  3 ++-
 lib/python/Components/AVSwitch.py                    | 11 +++++++++++
 lib/python/Plugins/SystemPlugins/Videomode/plugin.py |  6 +++++-
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/data/setup.xml b/data/setup.xml
index c49d629..219f9b5 100644
--- a/data/setup.xml
+++ b/data/setup.xml
@@ -13,7 +13,8 @@
 			<item level="0" text="TV System">config.av.tvsystem</item>
 			<item level="1" text="WSS on 4:3">config.av.wss</item>
 			<item level="1" text="AC3 default">config.av.defaultac3</item>
-			<item level="1" text="VCR Switch" requires="ScartSwitch">config.av.vcrswitch</item>
+			<item level="1" text="AC3 downmix" requires="CanDownmixAC3">config.av.downmix_ac3</item>
+			<item level="1" text="Auto scart switching" requires="ScartSwitch">config.av.vcrswitch</item>
 		</setup>
 		<setup key="usage" title="Customize">
 			<item level="0" text="Setup Mode">config.usage.setup_level</item>
diff --git a/lib/python/Components/AVSwitch.py b/lib/python/Components/AVSwitch.py
index 044ea43..65c979d 100644
--- a/lib/python/Components/AVSwitch.py
+++ b/lib/python/Components/AVSwitch.py
@@ -151,3 +151,14 @@ def InitAVSwitch():
 	iAVSwitch.setInput("ENCODER") # init on startup
 	SystemInfo["ScartSwitch"] = eAVSwitch.getInstance().haveScartSwitch()
 
+	try:
+		can_downmix = open("/proc/stb/audio/ac3_choices", "r").read()[:-1].find("downmix") != -1
+	except:
+		can_downmix = False
+
+	SystemInfo["CanDownmixAC3"] = can_downmix
+	if can_downmix:
+		def setAC3Downmix(configElement):
+			open("/proc/stb/audio/ac3", "w").write(configElement.value and "downmix" or "passthrough")
+		config.av.downmix_ac3 = ConfigYesNo(default = False)
+		config.av.downmix_ac3.addNotifier(setAC3Downmix)
diff --git a/lib/python/Plugins/SystemPlugins/Videomode/plugin.py b/lib/python/Plugins/SystemPlugins/Videomode/plugin.py
index aac25d6..031d2c1 100644
--- a/lib/python/Plugins/SystemPlugins/Videomode/plugin.py
+++ b/lib/python/Plugins/SystemPlugins/Videomode/plugin.py
@@ -1,6 +1,6 @@
 from Screens.Screen import Screen
 from Plugins.Plugin import PluginDescriptor
-
+from Components.SystemInfo import SystemInfo
 from Components.ConfigList import ConfigListScreen
 from Components.config import getConfigListEntry, config
 from Components.config import config
@@ -83,9 +83,13 @@ class VideoSetup(Screen, ConfigListScreen):
 			self.list.append(getConfigListEntry(_("Color Format"), config.av.colorformat))
 			if level >= 1:
 				self.list.append(getConfigListEntry(_("WSS on 4:3"), config.av.wss))
+				if SystemInfo["ScartSwitch"]:
+					self.list.append(getConfigListEntry(_("Auto scart switching"), config.av.vcrswitch))
 
 		if level >= 1:
 			self.list.append(getConfigListEntry(_("AC3 default"), config.av.defaultac3))
+			if SystemInfo["CanDownmixAC3"]:
+				self.list.append(getConfigListEntry(_("AC3 downmix"), config.av.downmix_ac3))
 
 		self["config"].list = self.list
 		self["config"].l.setList(self.list)
-- 
2.7.4