findNextBlock

[wavpack.git] / examples / WvInfo.hs

diff --git a/examples/WvInfo.hs b/examples/WvInfo.hs
index 4c5cf88cf6b6c895021382b9617459467faae16a..8b1f5b4dfdafbf659d46b34fc136e972ace9a5f5 100644 (file)
--- a/examples/WvInfo.hs
+++ b/examples/WvInfo.hs
@@ -1,9 +1,11 @@
 {-# LANGUAGE
-    UnicodeSyntax
+    UnboxedTuples
+  , UnicodeSyntax
   #-}
 module Main where
 import Codec.Audio.WavPack.Block
 import qualified Data.ByteString.Lazy as L
+import qualified Data.Strict as S
 import System.Environment
 
 main ∷ IO ()
@@ -13,8 +15,8 @@ main = do [wvFile] ← getArgs
 
 showWvInfo ∷ L.ByteString → IO ()
 showWvInfo stream
-    = case findNextHeader stream of
-        Just (bh, _)
-            → print bh
-        Nothing
+    = case findNextBlock stream of
+        (# S.Just block, _ #)
+            → print block
+        (# S.Nothing   , _ #)
             → fail "Can't find any WavPack block headers."