From 495004dfe17f85d370b7f5237d5e71b367af98ca Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Sun, 7 Jun 2015 21:46:59 +0200
Subject: automatic connections

---
 src/Trivmix.hs | 23 +++++++++++++++++++----
 trivmix.cabal  |  3 ++-
 2 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/src/Trivmix.hs b/src/Trivmix.hs
index f7ae1eb..a139a15 100644
--- a/src/Trivmix.hs
+++ b/src/Trivmix.hs
@@ -18,6 +18,7 @@ import Control.Concurrent
 import Control.Concurrent.MVar
 
 import qualified Control.Monad.Trans.Class as Trans
+import qualified Control.Monad.Exception.Synchronous as Sync
 
 import Control.Exception
 import System.IO.Error
@@ -28,6 +29,8 @@ data Options = Options
                { input :: String
                , output :: String
                , client :: String
+               , connFrom :: Maybe String
+               , connTo :: Maybe String
                , initialLevel :: Float
                , stateDir :: FilePath
                }
@@ -43,6 +46,12 @@ optionParser = Options <$>
                <*> strOption ( long "client"
                                <> metavar "STRING"
                              )
+               <*> optional (strOption ( long "input-from"
+                                         <> metavar "STRING"
+                                       ))
+               <*> optional (strOption ( long "output-to"
+                                         <> metavar "STRING"
+                                       ))
                <*> (fromMaybe 0 <$> optional (option auto ( long "level"
                                                             <> metavar "FLOAT"
                                                           )
@@ -71,10 +80,16 @@ trivmix Options{..} = do
     Jack.handleExceptions $
       Jack.withClientDefault client $ \client ->
       Jack.withPort client input $ \input' ->
-      Jack.withPort client output $ \output' ->
-      Audio.withProcessMono client input' (mix level) output' $
-      Jack.withActivation client $ Trans.lift $ do
-        Jack.waitForBreak
+      Jack.withPort client output $ \output' -> do
+        case connFrom of
+          Nothing -> return ()
+          Just f -> Jack.connect client input f
+        case connTo of
+          Nothing -> return ()
+          Just t -> Jack.connect client t output
+        Audio.withProcessMono client input' (mix level) output' $
+          Jack.withActivation client $ Trans.lift $ do
+            Jack.waitForBreak
   
 mix :: MVar Float -> CFloat -> IO CFloat
 mix level input = do
diff --git a/trivmix.cabal b/trivmix.cabal
index 8eee4f0..3031c98 100644
--- a/trivmix.cabal
+++ b/trivmix.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                trivmix
-version:             0.1.0
+version:             0.2.0
 -- synopsis:            
 -- description:         
 license:             PublicDomain
@@ -27,6 +27,7 @@ executable trivmix
                      , unix >=2.7 && <3
                      , hinotify >=0.3 && <1
                      , transformers >=0.3 && <1
+                     , explicit-exception >=0.1 && <1
   hs-source-dirs:      src
   default-language:    Haskell2010
 
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