I'm getting tired of this stupid project...

[wavpack.git] / Codec / Audio / WavPack / Words.hs

diff --git a/Codec/Audio/WavPack/Words.hs b/Codec/Audio/WavPack/Words.hs
index a8677fe41437faefa335b69634a66cafa9420e53..1321c0725808b340aea6e490ebd1817c627cc021 100644 (file)
--- a/Codec/Audio/WavPack/Words.hs
+++ b/Codec/Audio/WavPack/Words.hs
@@ -90,8 +90,7 @@ getWordsLossless isMono w0 bs0 nSamples0
                     let w' = w { wdZeroesAcc = wdZeroesAcc w - 1 }
                     in
                       if wdZeroesAcc w' > 0 then
-                          let v' = New.modify (\mv → MV.unsafeWrite mv n 0) v
-                              n' = n + 1
+                          let (# n', v' #) = appendWord 0 n v
                           in
                             go0 w' bs n' v'
                       else
@@ -111,8 +110,8 @@ getWordsLossless isMono w0 bs0 nSamples0
                                                 ( clearMedian $ fst $ wdEntropyData w'
                                                 , clearMedian $ snd $ wdEntropyData w' )
                                           }
-                                    v'  = New.modify (\mv → MV.unsafeWrite mv n 0) v
-                                    n'  = n + 1
+                                    (# n', v' #)
+                                        = appendWord 0 n v
                                 in
                                   go0 w'' bs'' n' v'
                             else
@@ -156,14 +155,20 @@ getWordsLossless isMono w0 bs0 nSamples0
                 in
                   go2 0 w' bs n v
           | otherwise
-              = error "FIXME"
+              = let next8 ∷ Word8
+                    next8 = B.toBits (B.take (8 ∷ Int) bs)
+                in
+                  if next8 ≡ 0xFF then
+                      error "FIXME"
+                  else
+                      error "FIXME"
 
       go2 ∷ Word32 → WordsData → bs → Int → New v Int32
           → (# WordsData, bs, Int, New v Int32 #)
       go2 0 w bs n v
           = let ent  = getEntropy n w
                 low  = 0
-                high = getMedian0 ent
+                high = getMedian0 ent - 1
                 ent' = decMedian0 ent
                 w'   = setEntropy ent' n w
             in
@@ -199,16 +204,23 @@ getWordsLossless isMono w0 bs0 nSamples0
           = let (# code, bs' #)
                      = readCode bs (high - low)
                 low' = low + code
-                a    = if B.head bs' then
+                word = if B.head bs' then
                            fromIntegral $ complement low'
                        else
                            fromIntegral low'
                 bs'' = B.tail bs'
-                v'   = New.modify (\mv → MV.unsafeWrite mv n a) v
-                n'   = n + 1
+                (# n', v' #)
+                     = appendWord word n v
             in
               go0 w bs'' n' v'
 
+      appendWord ∷ Int32 → Int → New v Int32 → (# Int, New v Int32 #)
+      appendWord word n v
+          = let v' = New.modify (\mv → MV.unsafeWrite mv n word) v
+                n' = n + 1
+            in
+              (# n', v' #)
+
       getEntropy ∷ Int → WordsData → EntropyData
       getEntropy n w
           | isMono        = fst $ wdEntropyData w