, Mono
, Stereo
, interleave
+ , deinterleave
+
+ , toLSV
, wrapSocket
, closeSocket
where
import Bindings.EsounD
import Data.Int
+import Data.StorableVector as S
import Data.StorableVector.Lazy as L
import Foreign.C.String
import Foreign.C.Types
channelFmt _ = c'ESD_STEREO
{-# INLINE interleave #-}
-interleave ∷ Frame fr ⇒ L.Vector fr → L.Vector fr → L.Vector fr
+interleave ∷ Storable α ⇒ L.Vector α → L.Vector α → L.Vector α
interleave l r
-- THINKME: consider using storablevector-streamfusion
= let Just (lFr, l') = L.viewL l
in
L.cons lFr (L.cons rFr lr')
+{-# INLINE deinterleave #-}
+deinterleave ∷ Storable α ⇒ L.Vector α → (L.Vector α, L.Vector α)
+deinterleave v
+ -- THINKME: consider using storablevector-streamfusion
+ = let (lr, v') = L.splitAt 2 v
+ in
+ if L.null lr then
+ (L.empty, L.empty)
+ else
+ let Just (lFr, r) = L.viewL lr
+ Just (rFr, _) = L.viewL r
+ (l', r') = deinterleave v'
+ in
+ (L.cons lFr l', L.cons rFr r')
+
-- Utility functions
+toLSV ∷ Storable α ⇒ S.Vector α → L.Vector α
+toLSV v = L.fromChunks [v]
+
wrapSocket ∷ String → CInt → IO Handle
wrapSocket e (-1) = fail e
wrapSocket _ fd = fdToHandle (Fd fd)