diff --git a/INSTALL b/INSTALL new file mode 100644 --- /dev/null +++ b/INSTALL @@ -0,0 +1,12 @@ + +Installation: + +runhaskell Setup.hs configure +runhaskell Setup.hs build +runhaskell Setup.hs install + +More information: + +runhaskell Setup.hs help + + diff --git a/LICENSE b/LICENSE new file mode 100644 --- /dev/null +++ b/LICENSE @@ -0,0 +1,280 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. 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See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +-} + +{-| + +The Jack module defines types and functions that allows you to +use the JACK Audio Connection Kit. + +-} +module Sound.JACK + ( + CFloat, + CUInt, + + Client, + Input, + Output, + newClient, + newClientSimple, + newInput, + newOutput, + activate, + clientClose, + getPorts, + connect, + setProcessMono, + setProcessStereo, + + mainMono, + mainStereo, + ) + where + +import qualified Sound.JACK.FFI as JackFFI +import Sound.JACK.FFI (flagsToWord, wordToFlags) + +import Foreign (newForeignPtr_, malloc, peek, peekArray0) +import Foreign.Ptr (Ptr, FunPtr, nullPtr) +import Foreign.C.String (newCString, peekCString) +import Foreign.C.Types (CUInt, CInt, CChar, CFloat, CULong) +import Control.Concurrent (MVar, putMVar, newEmptyMVar, takeMVar, threadDelay) + +import System.Posix.Signals (installHandler, keyboardSignal, Handler(Catch)) +import System.Environment (getProgName) +import Control.Monad (when) +import System.Random hiding (split) +import Data.Array.Storable + (StorableArray, Ix(range, index, inRange), readArray, writeArray, + unsafeForeignPtrToStorableArray) + + +-- | Handles of Jack clients +newtype Client = Client (Ptr ()) +-- | Handles of Jack input ports +newtype Input = Input (Ptr ()) +-- | Handles of Jack output ports +newtype Output = Output (Ptr ()) + +-- | Constructs a new Jack client. +newClient :: String -- ^ name of the JACK server + -> String -- ^ name of the client + -> IO Client +newClient server name = do + cserverS <- newCString server + cclientS <- newCString name + status <- malloc + let opt = flagsToWord [JackFFI.ServerName, JackFFI.NoStartServer] + client <- JackFFI.client_open cclientS opt status cserverS + checkStatus client status + return (Client client) + +-- | Creates a new JACK client with the "default" server +newClientSimple :: String -- ^ name of the client + -> IO Client +newClientSimple name = newClient "default" name + +checkStatus :: Ptr a -> Ptr CULong -> IO () +checkStatus c s = do + errCode <- peek s + when (c == nullPtr) (failStatus errCode) + when (errCode /= 0) + (putStrLn $ "warning: " ++ show (wordToFlags errCode :: [JackFFI.Status])) + +failStatus :: CULong -> IO () +failStatus errCode = + fail ("jack_client_open returned a nullPointer. Returned errorcodes: " + ++ show (wordToFlags errCode :: [JackFFI.Status])) + +-- | creates a new input port for the given client +newInput :: Client -- ^ Jack client + -> String -- ^ name of the input port + -> IO Input +newInput (Client client) portName = do + cstring <- newCString portName + audio_type <- newCString "32 bit float mono audio" +-- putStrLn ("register..." ++ show (client, cstring, audio_type, 1, 0)) + ret <- JackFFI.port_register client cstring audio_type 1 0 +-- putStrLn "register..." + return $ Input ret + +-- | creates a new output port +newOutput :: Client -- ^ Jack client + -> String -- ^ name of the output port + -> IO Output +newOutput (Client client) portName = do + cstring <- newCString portName + audio_type <- newCString "32 bit float mono audio" + ret <- JackFFI.port_register client cstring audio_type 2 0 + return $ Output ret + + +-- | activates the given Jack client +activate :: Client -> IO () +activate client = do + JackFFI.activate $ getClient client + return () + +-- | closes the given Jack client without causing any trouble (hopefully) +clientClose :: Client -> [Input] -> [Output] -> IO () +clientClose client inports outports = do + mapM (JackFFI.port_unregister (getClient client)) (map getInput inports) + mapM (JackFFI.port_unregister (getClient client)) (map getOutput outports) + JackFFI.deactivate (getClient client) + JackFFI.client_close (getClient client) + return () + +type Process = CUInt -> Ptr (CChar) -> IO (CInt) +foreign import ccall "wrapper" mkProcess :: Process -> IO (FunPtr Process) + + +getClient :: Client -> Ptr () +getClient (Client x) = x + +getInput :: Input -> Ptr () +getInput (Input x) = x + +getOutput :: Output -> Ptr () +getOutput (Output x) = x + +-- | returns the names of all existing ports of the given Jack client +getPorts :: Client -- ^ the Jack client + -> IO [String] -- ^ the names as a list of strings +getPorts client = do + empty <- newCString "" + strArray <- JackFFI.get_ports (getClient client) empty empty 0 + peekArray0 nullPtr strArray >>= mapM peekCString + + +connect :: Client -> String -> String -> IO() +connect client outport inport = do + outCString <- newCString outport + inCString <- newCString inport + JackFFI.connect (getClient client) outCString inCString + return () + + +quit :: MVar () -> Client -> [Input] -> [Output] -> IO () +quit mvar client ins outs = do + putStrLn "quitting..." + clientClose client ins outs + threadDelay 1000000 + putMVar mvar () + + + +mainMono :: (CFloat -> IO CFloat) -> IO () +mainMono fun = do + name <- getProgName + client <- newClientSimple name + + input <- newInput client "input" + output <- newOutput client "output" + + + setProcessMono client input fun output + + activate client + putStrLn $ "started " ++ name ++ "..." + + mvar <- newEmptyMVar + installHandler keyboardSignal (Catch (quit mvar client [input] [output])) Nothing + takeMVar mvar + +setProcessMono :: + Client -> Input -> (CFloat -> IO CFloat) -> Output -> IO CInt +setProcessMono client input fun output = do + procPtr <- mkProcess $ wrapMonoFun input fun output + JackFFI.set_process_callback (getClient client) procPtr nullPtr + +wrapMonoFun :: Input -> (CFloat -> IO CFloat) -> Output + -> (CUInt -> Ptr CChar -> IO CInt) -- what JACK expects +wrapMonoFun input fun output nframes _args = do + inArr <- getBufferArray (getInput input) nframes + outArr <- getBufferArray (getOutput output) nframes + mapM (applyToArraysMono inArr fun outArr) [0..(nframes - 1)] + return 0 -- ??? + +applyToArraysMono :: StorableArray CUInt CFloat -> (CFloat -> IO CFloat) + -> StorableArray CUInt CFloat + -> CUInt -> IO () +applyToArraysMono inArr fun outArr i = + readArray inArr i >>= fun >>= writeArray outArr i + +getBufferArray :: Ptr () -> CUInt -> IO (StorableArray CUInt CFloat) +getBufferArray bptr nframes = do + ptr <- JackFFI.port_get_buffer bptr nframes + fptr <- newForeignPtr_ ptr + unsafeForeignPtrToStorableArray fptr (0, (nframes - 1)) + +-- Stereo +mainStereo :: ((CFloat, CFloat) -> IO (CFloat, CFloat)) -> IO () +mainStereo fun = do + name <- getProgName + client <- newClientSimple name + + inputLeft <- newInput client "inputLeft" + inputRight <- newInput client "inputRight" + outputLeft <- newOutput client "outputLeft" + outputRight <- newOutput client "outputRight" + + seq (map fun (replicate 100 (0, 0))) (return ()) + + setProcessStereo client inputLeft inputRight fun outputLeft outputRight + + activate client + putStrLn $ "started " ++ name ++ "..." + + mvar <- newEmptyMVar + installHandler + keyboardSignal + (Catch (quit mvar client [inputLeft, inputRight] [outputLeft, outputRight])) + Nothing + takeMVar mvar + + +setProcessStereo :: + Client -> Input -> Input -> + ((CFloat, CFloat) -> IO (CFloat, CFloat)) -> + Output -> Output -> IO CInt +setProcessStereo client inputLeft inputRight fun outputLeft outputRight = do + procPtr <- mkProcess $ wrapStereoFun inputLeft inputRight fun outputLeft outputRight + JackFFI.set_process_callback (getClient client) procPtr nullPtr + + +wrapStereoFun :: Input -> Input + -> ((CFloat, CFloat) -> IO (CFloat, CFloat)) + -> Output -> Output + -> (CUInt -> Ptr CChar -> IO CInt) -- what JACK expects +wrapStereoFun iL iR fun oL oR nframes _args = do + inLArr <- getBufferArray (getInput iL) nframes + inRArr <- getBufferArray (getInput iR) nframes + outLArr <- getBufferArray (getOutput oL) nframes + outRArr <- getBufferArray (getOutput oR) nframes + mapM (applyToArraysStereo inLArr inRArr fun outLArr outRArr) [0..(nframes - 1)] + return 0 -- ??? + +applyToArraysStereo :: StorableArray CUInt CFloat + -> StorableArray CUInt CFloat + -> ((CFloat, CFloat) -> IO (CFloat, CFloat)) + -> StorableArray CUInt CFloat + -> StorableArray CUInt CFloat + -> CUInt -> IO () +applyToArraysStereo iL iR fun oL oR i = do + l <- readArray iL i + r <- readArray iR i + (l', r') <- fun (l, r) + writeArray oL i l' + writeArray oR i r' + + + +-- Useful instances +instance Ix CUInt where + range (a, b) = [a..b] + index (start, _end) i = fromEnum (i - start) + inRange (start, end) i = start <= i && i <= end + + +instance Random CFloat where + random g = randomIvalDouble (0::Double,1) realToFrac g + randomR (a,b) g = randomIvalDouble (realToFrac a, realToFrac b) realToFrac g + +randomIvalInteger :: (RandomGen g, Num a) => (Integer, Integer) -> g -> (a, g) +randomIvalInteger (l,h) rng = + if l > h + then randomIvalInteger (h,l) rng + else case (f n 1 rng) of (v, rng') -> (fromInteger (l + v `mod` k), rng') + where + k = h - l + 1 + b = 2147483561 + n = iLogBase b k + + f 0 acc g = (acc, g) + f nn acc g = + let + (x,g') = next g + in + f (nn-1) (fromIntegral x + acc * b) g' + +randomIvalDouble :: (RandomGen g, Fractional a) => + (Double, Double) -> (Double -> a) -> g -> (a, g) +randomIvalDouble (l,h) fromDouble rng = + if l > h + then randomIvalDouble (h,l) fromDouble rng + else + case (randomIvalInteger (toInteger (minBound::Int), toInteger (maxBound::Int)) rng) of + (x, rng') -> + let + scaled_x = + fromDouble ((l+h)/2) + + fromDouble ((h-l) / realToFrac intRange) * + fromIntegral (x::Int) + in + (scaled_x, rng') + +intRange :: Integer +intRange = toInteger (maxBound::Int) - toInteger (minBound::Int) + +iLogBase :: Integer -> Integer -> Integer +iLogBase b i = if i < b then 1 else 1 + iLogBase b (i `div` b) + diff --git a/src/Sound/JACK/FFI.hs b/src/Sound/JACK/FFI.hs new file mode 100644 --- /dev/null +++ b/src/Sound/JACK/FFI.hs @@ -0,0 +1,131 @@ +{-# OPTIONS -fffi #-} + +{- + JACK bindings for Haskell + Copyright (C) 2007 Soenke Hahn + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +-} + +module Sound.JACK.FFI where + +import Foreign.Ptr (Ptr, FunPtr) +import Foreign.C.String (CString) +import Foreign.C.Types (CUInt, CInt, CChar, CFloat, CULong) + +import Data.Bits (setBit, bit) + +import Data.Array(Ix) + + + +foreign import ccall "static jack/jack.h jack_client_open" + client_open :: CString -> CULong -> Ptr CULong -> CString -> IO (Ptr ()) + +foreign import ccall "static jack/jack.h jack_client_new" + client_new :: CString -> IO (Ptr ()) + + +data OpenOptions = + NoStartServer + | UseExactName + | ServerName + deriving (Enum, Eq, Ord, Show, Ix) + +wordNullOption, wordNoStartServer, wordUseExactName, wordServerName :: CULong +wordNullOption = 0 +wordNoStartServer = flagToWord NoStartServer +wordUseExactName = flagToWord UseExactName +wordServerName = flagToWord ServerName + + + +data Status = + Failure + | InvalidOption + | NameNotUnique + | ServerStarted + | ServerFailed + | ServerError + | NoSuchClient + | LoadFailure + | InitFailure + | ShmFailure + | VersionError + deriving (Enum, Eq, Ord, Show, Ix) + +wordFailure, wordInvalidOption, wordNameNotUnique, wordServerStarted, + wordServerFailed, wordServerError, wordNoSuchClient, wordLoadFailure, + wordInitFailure, wordShmFailure, wordVersionError :: CULong +wordFailure = flagToWord Failure +wordInvalidOption = flagToWord InvalidOption +wordNameNotUnique = flagToWord NameNotUnique +wordServerStarted = flagToWord ServerStarted +wordServerFailed = flagToWord ServerFailed +wordServerError = flagToWord ServerError +wordNoSuchClient = flagToWord NoSuchClient +wordLoadFailure = flagToWord LoadFailure +wordInitFailure = flagToWord InitFailure +wordShmFailure = flagToWord ShmFailure +wordVersionError = flagToWord VersionError + + + +foreign import ccall "static jack/jack.h jack_port_register" + port_register :: Ptr () -> Ptr (CChar) -> Ptr (CChar) -> + CULong -> CULong -> IO (Ptr ()) + +foreign import ccall "static jack/jack.h jack_set_process_callback" + set_process_callback :: + Ptr () -> FunPtr (CUInt -> Ptr (CChar) -> IO (CInt)) -> Ptr (CChar) -> IO (CInt) + +foreign import ccall "static jack/jack.h jack_port_get_buffer" + port_get_buffer :: Ptr () -> CUInt -> IO (Ptr CFloat) + +foreign import ccall "static jack/jack.h jack_get_buffer_size" + get_buffer_size :: Ptr () -> IO (CUInt) + +foreign import ccall "static jack/jack.h jack_activate" + activate :: Ptr () -> IO (CInt) + +foreign import ccall "static jack/jack.h jack_client_close" + client_close :: Ptr () -> IO (CInt) + +foreign import ccall "static jack/jack.h jack_get_ports" + get_ports :: Ptr () -> Ptr (CChar) -> Ptr (CChar) -> CULong -> IO (Ptr (Ptr (CChar))) + +foreign import ccall "static jack/jack.h jack_connect" + connect :: Ptr () -> Ptr (CChar) -> Ptr (CChar) -> IO (CInt) + +foreign import ccall "static jack/jack.h jack_port_unregister" + port_unregister :: Ptr () -> Ptr () -> IO (CInt) + +foreign import ccall "static jack/jack.h jack_deactivate" + deactivate :: Ptr () -> IO (CInt) + + + +-- * Utility functions + +flagToWord :: (Enum a) => a -> CULong +flagToWord = bit . fromEnum + +flagsToWord :: (Enum a) => [a] -> CULong +flagsToWord = foldl setBit 0 . map fromEnum + +wordToFlags :: (Enum a) => CULong -> [a] +wordToFlags = + map fst . filter (odd . snd) . + zip [toEnum 0 ..] . iterate (flip div 2)