diff --git a/C2HS.hs b/C2HS.hs new file mode 100644 --- /dev/null +++ b/C2HS.hs @@ -0,0 +1,220 @@ +-- C->Haskell Compiler: Marshalling library +-- +-- Copyright (c) [1999...2005] Manuel M T Chakravarty +-- +-- Redistribution and use in source and binary forms, with or without +-- modification, are permitted provided that the following conditions are met: +-- +-- 1. Redistributions of source code must retain the above copyright notice, +-- this list of conditions and the following disclaimer. +-- 2. Redistributions in binary form must reproduce the above copyright +-- notice, this list of conditions and the following disclaimer in the +-- documentation and/or other materials provided with the distribution. +-- 3. The name of the author may not be used to endorse or promote products +-- derived from this software without specific prior written permission. +-- +-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +-- IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +-- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN +-- NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +-- TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +-- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +-- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +-- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +-- +--- Description --------------------------------------------------------------- +-- +-- Language: Haskell 98 +-- +-- This module provides the marshaling routines for Haskell files produced by +-- C->Haskell for binding to C library interfaces. It exports all of the +-- low-level FFI (language-independent plus the C-specific parts) together +-- with the C->HS-specific higher-level marshalling routines. +-- + +module C2HS ( + + -- * Re-export the language-independent component of the FFI + module Foreign, + + -- * Re-export the C language component of the FFI + module CForeign, + + -- * Composite marshalling functions + withCStringLenIntConv, peekCStringLenIntConv, withIntConv, withFloatConv, + peekIntConv, peekFloatConv, withBool, peekBool, withEnum, peekEnum, + + -- * Conditional results using 'Maybe' + nothingIf, nothingIfNull, + + -- * Bit masks + combineBitMasks, containsBitMask, extractBitMasks, + + -- * Conversion between C and Haskell types + cIntConv, cFloatConv, cToBool, cFromBool, cToEnum, cFromEnum +) where + + +import Foreign + hiding (Word) + -- Should also hide the Foreign.Marshal.Pool exports in + -- compilers that export them +import CForeign + +import Monad (when, liftM) + + +-- Composite marshalling functions +-- ------------------------------- + +-- Strings with explicit length +-- +withCStringLenIntConv s f = withCStringLen s $ \(p, n) -> f (p, cIntConv n) +peekCStringLenIntConv (s, n) = peekCStringLen (s, cIntConv n) + +-- Marshalling of numerals +-- + +withIntConv :: (Storable b, Integral a, Integral b) + => a -> (Ptr b -> IO c) -> IO c +withIntConv = with . cIntConv + +withFloatConv :: (Storable b, RealFloat a, RealFloat b) + => a -> (Ptr b -> IO c) -> IO c +withFloatConv = with . cFloatConv + +peekIntConv :: (Storable a, Integral a, Integral b) + => Ptr a -> IO b +peekIntConv = liftM cIntConv . peek + +peekFloatConv :: (Storable a, RealFloat a, RealFloat b) + => Ptr a -> IO b +peekFloatConv = liftM cFloatConv . peek + +-- Passing Booleans by reference +-- + +withBool :: (Integral a, Storable a) => Bool -> (Ptr a -> IO b) -> IO b +withBool = with . fromBool + +peekBool :: (Integral a, Storable a) => Ptr a -> IO Bool +peekBool = liftM toBool . peek + + +-- Passing enums by reference +-- + +withEnum :: (Enum a, Integral b, Storable b) => a -> (Ptr b -> IO c) -> IO c +withEnum = with . cFromEnum + +peekEnum :: (Enum a, Integral b, Storable b) => Ptr b -> IO a +peekEnum = liftM cToEnum . peek + + +-- Storing of 'Maybe' values +-- ------------------------- + +instance Storable a => Storable (Maybe a) where + sizeOf _ = sizeOf (undefined :: Ptr ()) + alignment _ = alignment (undefined :: Ptr ()) + + peek p = do + ptr <- peek (castPtr p) + if ptr == nullPtr + then return Nothing + else liftM Just $ peek ptr + + poke p v = do + ptr <- case v of + Nothing -> return nullPtr + Just v' -> new v' + poke (castPtr p) ptr + + +-- Conditional results using 'Maybe' +-- --------------------------------- + +-- Wrap the result into a 'Maybe' type. +-- +-- * the predicate determines when the result is considered to be non-existing, +-- ie, it is represented by `Nothing' +-- +-- * the second argument allows to map a result wrapped into `Just' to some +-- other domain +-- +nothingIf :: (a -> Bool) -> (a -> b) -> a -> Maybe b +nothingIf p f x = if p x then Nothing else Just $ f x + +-- |Instance for special casing null pointers. +-- +nothingIfNull :: (Ptr a -> b) -> Ptr a -> Maybe b +nothingIfNull = nothingIf (== nullPtr) + + +-- Support for bit masks +-- --------------------- + +-- Given a list of enumeration values that represent bit masks, combine these +-- masks using bitwise disjunction. +-- +combineBitMasks :: (Enum a, Bits b) => [a] -> b +combineBitMasks = foldl (.|.) 0 . map (fromIntegral . fromEnum) + +-- Tests whether the given bit mask is contained in the given bit pattern +-- (i.e., all bits set in the mask are also set in the pattern). +-- +containsBitMask :: (Bits a, Enum b) => a -> b -> Bool +bits `containsBitMask` bm = let bm' = fromIntegral . fromEnum $ bm + in + bm' .&. bits == bm' + +-- |Given a bit pattern, yield all bit masks that it contains. +-- +-- * This does *not* attempt to compute a minimal set of bit masks that when +-- combined yield the bit pattern, instead all contained bit masks are +-- produced. +-- +extractBitMasks :: (Bits a, Enum b, Bounded b) => a -> [b] +extractBitMasks bits = + [bm | bm <- [minBound..maxBound], bits `containsBitMask` bm] + + +-- Conversion routines +-- ------------------- + +-- |Integral conversion +-- +cIntConv :: (Integral a, Integral b) => a -> b +cIntConv = fromIntegral + +-- |Floating conversion +-- +cFloatConv :: (RealFloat a, RealFloat b) => a -> b +cFloatConv = realToFrac +-- As this conversion by default goes via `Rational', it can be very slow... +{-# RULES + "cFloatConv/Float->Float" forall (x::Float). cFloatConv x = x; + "cFloatConv/Double->Double" forall (x::Double). cFloatConv x = x + #-} + +-- |Obtain C value from Haskell 'Bool'. +-- +cFromBool :: Num a => Bool -> a +cFromBool = fromBool + +-- |Obtain Haskell 'Bool' from C value. +-- +cToBool :: Num a => a -> Bool +cToBool = toBool + +-- |Convert a C enumeration to Haskell. +-- +cToEnum :: (Integral i, Enum e) => i -> e +cToEnum = toEnum . cIntConv + +-- |Convert a Haskell enumeration to C. +-- +cFromEnum :: (Enum e, Integral i) => e -> i +cFromEnum = cIntConv . fromEnum diff --git a/COPYING b/COPYING new file mode 100644 --- /dev/null +++ b/COPYING @@ -0,0 +1,339 @@ + 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. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Lesser General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + + 1. You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. You may modify your copy or copies of the Program or any portion +of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) You must cause the modified files to carry prominent notices + stating that you changed the files and the date of any change. + + b) You must cause any work that you distribute or publish, that in + whole or in part contains or is derived from the Program or any + part thereof, to be licensed as a whole at no charge to all third + parties under the terms of this License. + + c) If the modified program normally reads commands interactively + when run, you must cause it, when started running for such + interactive use in the most ordinary way, to print or display an + announcement including an appropriate copyright notice and a + notice that there is no warranty (or else, saying that you provide + a warranty) and that users may redistribute the program under + these conditions, and telling the user how to view a copy of this + License. (Exception: if the Program itself is interactive but + does not normally print such an announcement, your work based on + the Program is not required to print an announcement.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Program, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Program, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Program. + +In addition, mere aggregation of another work not based on the Program +with the Program (or with a work based on the Program) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may copy and distribute the Program (or a work based on it, +under Section 2) in object code or executable form under the terms of +Sections 1 and 2 above provided that you also do one of the following: + + a) Accompany it with the complete corresponding machine-readable + source code, which must be distributed under the terms of Sections + 1 and 2 above on a medium customarily used for software interchange; or, + + b) Accompany it with a written offer, valid for at least three + years, to give any third party, for a charge no more than your + cost of physically performing source distribution, a complete + machine-readable copy of the corresponding source code, to be + distributed under the terms of Sections 1 and 2 above on a medium + customarily used for software interchange; or, + + c) Accompany it with the information you received as to the offer + to distribute corresponding source code. (This alternative is + allowed only for noncommercial distribution and only if you + received the program in object code or executable form with such + an offer, in accord with Subsection b above.) + +The source code for a work means the preferred form of the work for +making modifications to it. For an executable work, complete source +code means all the source code for all modules it contains, plus any +associated interface definition files, plus the scripts used to +control compilation and installation of the executable. However, as a +special exception, the source code distributed need not include +anything that is normally distributed (in either source or binary +form) with the major components (compiler, kernel, and so on) of the +operating system on which the executable runs, unless that component +itself accompanies the executable. + +If distribution of executable or object code is made by offering +access to copy from a designated place, then offering equivalent +access to copy the source code from the same place counts as +distribution of the source code, even though third parties are not +compelled to copy the source along with the object code. + + 4. You may not copy, modify, sublicense, or distribute the Program +except as expressly provided under this License. Any attempt +otherwise to copy, modify, sublicense or distribute the Program is +void, and will automatically terminate your rights under this License. +However, parties who have received copies, or rights, from you under +this License will not have their licenses terminated so long as such +parties remain in full compliance. + + 5. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Program or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Program (or any work based on the +Program), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Program or works based on it. + + 6. Each time you redistribute the Program (or any work based on the +Program), the recipient automatically receives a license from the +original licensor to copy, distribute or modify the Program subject to +these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties to +this License. + + 7. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Program at all. For example, if a patent +license would not permit royalty-free redistribution of the Program by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Program. + +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply and the section as a whole is intended to apply in other +circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system, which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 8. If the distribution and/or use of the Program is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Program under this License +may add an explicit geographical distribution limitation excluding +those countries, so that distribution is permitted only in or among +countries not thus excluded. In such case, this License incorporates +the limitation as if written in the body of this License. + + 9. The Free Software Foundation may publish revised and/or new versions +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. + + 10. If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the author +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + 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. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,4 @@ +#!/usr/bin/env runhaskell + +import Distribution.Simple +main = defaultMain diff --git a/Sound/File/Sndfile.hs b/Sound/File/Sndfile.hs new file mode 100644 --- /dev/null +++ b/Sound/File/Sndfile.hs @@ -0,0 +1,36 @@ +-- | "Sound.File.Sndfile" provides a Haskell interface to the ubiquitous +-- libsndfile library by Erik de Castro Lopo (visit the author's website at +-- ). + +module Sound.File.Sndfile +( + -- *Types + Count, Index, + -- *Stream format + Format(..), + HeaderFormat(..), + SampleFormat(..), + EndianFormat(..), + defaultFormat, + -- *Stream info + Info(..), duration, defaultInfo, checkFormat, + -- *Stream handle operations + Handle, hInfo, hIsSeekable, + IOMode(..), openFile, getFileInfo, hFlush, hClose, + SeekMode(..), hSeek, hSeekRead, hSeekWrite, + -- *I\/O functions + MBuffer(..), interact, + --IBuffer(..), + -- *Exception handling + Exception, errorString, catch, + -- *Header string field access + StringType(..), getString, setString +) where + +import Prelude hiding (catch, interact) +import Sound.File.Sndfile.Buffer +import Sound.File.Sndfile.Buffer.Storable () +import Sound.File.Sndfile.Buffer.IOCArray () +import Sound.File.Sndfile.Interface + +-- EOF diff --git a/Sound/File/Sndfile/Buffer.hs b/Sound/File/Sndfile/Buffer.hs new file mode 100644 --- /dev/null +++ b/Sound/File/Sndfile/Buffer.hs @@ -0,0 +1,99 @@ +{-# LANGUAGE MultiParamTypeClasses #-} + +module Sound.File.Sndfile.Buffer +( + MBuffer(..), + checkSampleBounds, checkFrameBounds, + interact +) where + +import C2HS +import Control.Monad (liftM, when) +import Data.Array.Base (unsafeRead, unsafeWrite) +import Data.Array.MArray (Ix, MArray, getBounds) +--import Data.Array.IArray (IArray) +import Data.Ix (rangeSize) +import Prelude hiding (interact) +import Sound.File.Sndfile.Interface + +checkSampleBounds :: (Monad m) => Count -> Int -> Count -> m () +checkSampleBounds size channels count + | (count `mod` channels) /= 0 = throw (Exception ("invalid channel/count combination " ++ (show count))) + | (count < 0) || (count > size) = throw (Exception "index out of bounds") + | otherwise = return () + +checkFrameBounds :: (Monad m) => Count -> Int -> Count -> m () +checkFrameBounds size channels count + | (size `mod` channels) /= 0 = throw (Exception "invalid buffer size") + | (count < 0) || (count > (size `quot` channels)) = throw (Exception "index out of bounds") + | otherwise = return () + +-- |The class MBuffer is used for polymorphic I\/O on a 'Handle', and is +-- parameterized on the mutable array type, the element type and the monad +-- results are returned in. +-- +-- It is important to note that the data type used by the calling program and +-- the data format of the file do not need to be the same. For instance, it is +-- possible to open a 16 bit PCM encoded WAV file and read the data in +-- floating point format. The library seamlessly converts between the two +-- formats on-the-fly; the Haskell interface only supports reading and writing +-- 'Double' or 'Float' values. +-- +-- When converting between integer data and floating point data, the following +-- rules apply: The default behaviour when reading floating point data +-- ('hGetSamples' or 'hGetFrames') from a file with integer data is +-- normalisation. Regardless of whether data in the file is 8, 16, 24 or 32 +-- bit wide, the data will be read as floating point data in the range +-- [-1.0, 1.0]. Similarly, data in the range [-1.0, 1.0] will be written to an +-- integer PCM file so that a data value of 1.0 will be the largest allowable +-- integer for the given bit width. This normalisation can be turned on or off +-- using the command interface [TODO: implementation missing in Haskell]. +-- +-- 'hGetSamples' and 'hGetFrames' return the number of items read. Unless the +-- end of the file was reached during the read, the return value should equal +-- the number of items requested. Attempts to read beyond the end of the file +-- will not result in an error but will cause the read functions to return +-- less than the number of items requested or 0 if already at the end of the +-- file. +class (MArray a e m) => MBuffer a e m where + -- |Fill the destination array with the requested number of items. The 'count' + -- parameter must be an integer product of the number of channels or an error + -- will occur. + hGetSamples :: Handle -> a Index e -> Count -> m Count + -- |Fill the destination array with the requested number of frames of data. + -- The array must be large enough to hold the product of frames and the number + -- of channels or an error will occur. + hGetFrames :: Handle -> a Index e -> Count -> m Count + -- |Write 'count' samples from the source array to the stream. The 'count' + -- parameter must be an integer product of the number of channels or an error + -- will occur. + -- + -- 'hPutSamples' returns the number of items written (which should be the same + -- as the 'count' parameter). + hPutSamples :: Handle -> a Index e -> Count -> m Count + -- |Write 'count' frames from the source array to the stream. + -- The array must be large enough to hold the product of frames and the number + -- of channels or an error will occur. + -- + -- 'hPutFrames' returns the number of frames written (which should be the same + -- as the 'count' parameter). + hPutFrames :: Handle -> a Index e -> Count -> m Count + +modifyArray :: (MArray a e m, Ix i) => (e -> e) -> a i e -> Int -> Int -> m () +modifyArray f a i n + | i >= n = return () + | otherwise = do + e <- unsafeRead a i + unsafeWrite a i (f e) + modifyArray f a (i+1) n + +interact :: (MBuffer a e m) => (e -> e) -> a Index e -> Handle -> Handle -> m () +interact f buffer hIn hOut = do + s <- liftM rangeSize $ getBounds buffer + n <- hGetSamples hIn buffer s + when (n > 0) $ do + modifyArray f buffer 0 n + hPutSamples hOut buffer n + interact f buffer hIn hOut + +-- EOF diff --git a/Sound/File/Sndfile/Buffer/IOCArray.hs b/Sound/File/Sndfile/Buffer/IOCArray.hs new file mode 100644 --- /dev/null +++ b/Sound/File/Sndfile/Buffer/IOCArray.hs @@ -0,0 +1,47 @@ +{-# LANGUAGE ForeignFunctionInterface #-} +{-# OPTIONS_GHC -fglasgow-exts #-} + +module Sound.File.Sndfile.Buffer.IOCArray where + +import C2HS +import Control.Monad (liftM) +import Data.Array.IOCArray +import Sound.File.Sndfile.Buffer +import Sound.File.Sndfile.Interface + +type IOFunc a = HandlePtr -> Ptr a -> CLLong -> IO CLLong + +{-# INLINE hIO #-} +hIO :: (Storable a) => + (Count -> Int -> Count -> IO ()) + -> IOFunc a + -> Handle -> (IOCArray Index a) -> Count + -> IO Count +hIO checkBounds ioFunc (Handle info handle) buffer count = do + size <- liftM rangeSize $ getBounds buffer + checkBounds size (channels info) count + result <- withIOCArray buffer $ + \ptr -> liftM fromIntegral $ ioFunc handle ptr (cIntConv count) + checkHandle handle + touchIOCArray buffer + return $ cIntConv result + +foreign import ccall unsafe "sf_read_double" sf_read_double :: IOFunc Double +foreign import ccall unsafe "sf_write_double" sf_write_double :: IOFunc Double + +instance MBuffer IOCArray Double IO where + hGetSamples = hIO checkSampleBounds sf_read_double + hGetFrames = hIO checkFrameBounds sf_read_double + hPutSamples = hIO checkSampleBounds sf_write_double + hPutFrames = hIO checkFrameBounds sf_write_double + +foreign import ccall unsafe "sf_read_float" sf_read_float :: IOFunc Float +foreign import ccall unsafe "sf_write_float" sf_write_float :: IOFunc Float + +instance MBuffer IOCArray Float IO where + hGetSamples = hIO checkSampleBounds sf_read_float + hGetFrames = hIO checkFrameBounds sf_read_float + hPutSamples = hIO checkSampleBounds sf_write_float + hPutFrames = hIO checkFrameBounds sf_write_float + +-- EOF diff --git a/Sound/File/Sndfile/Buffer/Storable.hs b/Sound/File/Sndfile/Buffer/Storable.hs new file mode 100644 --- /dev/null +++ b/Sound/File/Sndfile/Buffer/Storable.hs @@ -0,0 +1,47 @@ +{-# LANGUAGE ForeignFunctionInterface #-} +{-# OPTIONS_GHC -fglasgow-exts #-} + +module Sound.File.Sndfile.Buffer.Storable where + +import C2HS +import Control.Monad (liftM) +import Data.Array.Storable +import Sound.File.Sndfile.Buffer +import Sound.File.Sndfile.Interface + +type IOFunc a = HandlePtr -> Ptr a -> CLLong -> IO CLLong + +{-# INLINE hIO #-} +hIO :: (Storable a) => + (Count -> Int -> Count -> IO ()) + -> IOFunc a + -> Handle -> (StorableArray Index a) -> Count + -> IO Count +hIO checkBounds ioFunc (Handle info handle) buffer count = do + size <- liftM rangeSize $ getBounds buffer + checkBounds size (channels info) count + result <- withStorableArray buffer $ + \ptr -> liftM fromIntegral $ ioFunc handle ptr (cIntConv count) + checkHandle handle + touchStorableArray buffer + return $ cIntConv result + +foreign import ccall unsafe "sf_read_double" sf_read_double :: IOFunc Double +foreign import ccall unsafe "sf_write_double" sf_write_double :: IOFunc Double + +instance MBuffer StorableArray Double IO where + hGetSamples = hIO checkSampleBounds sf_read_double + hGetFrames = hIO checkFrameBounds sf_read_double + hPutSamples = hIO checkSampleBounds sf_write_double + hPutFrames = hIO checkFrameBounds sf_write_double + +foreign import ccall unsafe "sf_read_float" sf_read_float :: IOFunc Float +foreign import ccall unsafe "sf_write_float" sf_write_float :: IOFunc Float + +instance MBuffer StorableArray Float IO where + hGetSamples = hIO checkSampleBounds sf_read_float + hGetFrames = hIO checkFrameBounds sf_read_float + hPutSamples = hIO checkSampleBounds sf_write_float + hPutFrames = hIO checkFrameBounds sf_write_float + +-- EOF diff --git a/Sound/File/Sndfile/Interface.chs b/Sound/File/Sndfile/Interface.chs new file mode 100644 --- /dev/null +++ b/Sound/File/Sndfile/Interface.chs @@ -0,0 +1,428 @@ +{-# LANGUAGE ForeignFunctionInterface #-} +{-# OPTIONS_GHC -fglasgow-exts #-} + +module Sound.File.Sndfile.Interface where + +import C2HS +import Control.Monad (liftM, when) +import Control.Exception (catchDyn, throwDyn) +import Data.Bits +import Data.Int (Int64) +import Data.Typeable (Typeable) +import Prelude hiding (catch) +import System.IO.Unsafe (unsafePerformIO) + +#include + +{#context lib="libsndfile" prefix="sf"#} + +-- ==================================================================== +-- Basic types + +type Count = Int -- ^ Type for expressing sample counts. +type Index = Int -- ^ Type for expressing sample indices. + +-- ==================================================================== +-- Format + +-- | Header format. +{#enum HeaderFormat {underscoreToCase} deriving (Eq, Show)#} +#c +enum HeaderFormat +{ + HEADER_FORMAT_NONE = 0, + + HEADER_FORMAT_WAV = SF_FORMAT_WAV, + HEADER_FORMAT_AIFF = SF_FORMAT_AIFF, + HEADER_FORMAT_AU = SF_FORMAT_AU, + HEADER_FORMAT_RAW = SF_FORMAT_RAW, + HEADER_FORMAT_PAF = SF_FORMAT_PAF, + HEADER_FORMAT_SVX = SF_FORMAT_SVX, + HEADER_FORMAT_NIST = SF_FORMAT_NIST, + HEADER_FORMAT_VOC = SF_FORMAT_VOC, + HEADER_FORMAT_IRCAM = SF_FORMAT_IRCAM, + HEADER_FORMAT_W64 = SF_FORMAT_W64, + HEADER_FORMAT_MAT4 = SF_FORMAT_MAT4, + HEADER_FORMAT_MAT5 = SF_FORMAT_MAT5, + HEADER_FORMAT_PVF = SF_FORMAT_PVF, + HEADER_FORMAT_XI = SF_FORMAT_XI, + HEADER_FORMAT_HTK = SF_FORMAT_HTK, + HEADER_FORMAT_SDS = SF_FORMAT_SDS, + HEADER_FORMAT_AVR = SF_FORMAT_AVR, + HEADER_FORMAT_WAVEX = SF_FORMAT_WAVEX, + HEADER_FORMAT_SD2 = SF_FORMAT_SD2, + HEADER_FORMAT_FLAC = SF_FORMAT_FLAC, + HEADER_FORMAT_CAF = SF_FORMAT_CAF +}; +#endc + +-- | Sample format. +{#enum SampleFormat {underscoreToCase} deriving (Eq, Show)#} +#c +enum SampleFormat +{ + SAMPLE_FORMAT_NONE = 0, + + SAMPLE_FORMAT_PCM_S8 = SF_FORMAT_PCM_S8, + SAMPLE_FORMAT_PCM_16 = SF_FORMAT_PCM_16, + SAMPLE_FORMAT_PCM_24 = SF_FORMAT_PCM_24, + SAMPLE_FORMAT_PCM_32 = SF_FORMAT_PCM_32, + + SAMPLE_FORMAT_PCM_U8 = SF_FORMAT_PCM_U8, + + SAMPLE_FORMAT_FLOAT = SF_FORMAT_FLOAT, + SAMPLE_FORMAT_DOUBLE = SF_FORMAT_DOUBLE, + + SAMPLE_FORMAT_ULAW = SF_FORMAT_ULAW, + SAMPLE_FORMAT_ALAW = SF_FORMAT_ALAW, + SAMPLE_FORMAT_IMA_ADPCM = SF_FORMAT_IMA_ADPCM, + SAMPLE_FORMAT_MS_ADPCM = SF_FORMAT_MS_ADPCM, + + SAMPLE_FORMAT_GSM610 = SF_FORMAT_GSM610, + SAMPLE_FORMAT_VOX_ADPCM = SF_FORMAT_VOX_ADPCM, + + SAMPLE_FORMAT_G721_32 = SF_FORMAT_G721_32, + SAMPLE_FORMAT_G723_24 = SF_FORMAT_G723_24, + SAMPLE_FORMAT_G723_40 = SF_FORMAT_G723_40, + + SAMPLE_FORMAT_DWVW_12 = SF_FORMAT_DWVW_12, + SAMPLE_FORMAT_DWVW_16 = SF_FORMAT_DWVW_16, + SAMPLE_FORMAT_DWVW_24 = SF_FORMAT_DWVW_24, + SAMPLE_FORMAT_DWVW_N = SF_FORMAT_DWVW_N, + + SAMPLE_FORMAT_FORMAT_DPCM_8 = SF_FORMAT_DPCM_8, + SAMPLE_FORMAT_FORMAT_DPCM_16 = SF_FORMAT_DPCM_16 +}; +#endc + +-- | Endianness. +{#enum EndianFormat {underscoreToCase} deriving (Eq, Show)#} +#c +enum EndianFormat +{ + ENDIAN_FILE = SF_ENDIAN_FILE, + ENDIAN_LITTLE = SF_ENDIAN_LITTLE, + ENDIAN_BIG = SF_ENDIAN_BIG, + ENDIAN_CPU = SF_ENDIAN_CPU +}; +#endc + +-- only used internally +{#enum FormatMask {underscoreToCase} deriving (Eq)#} +#c +enum FormatMask +{ + FORMAT_SUB_MASK = SF_FORMAT_SUBMASK, + FORMAT_TYPE_MASK = SF_FORMAT_TYPEMASK, + FORMAT_END_MASK = SF_FORMAT_ENDMASK +}; +#endc + +-- |Stream format specification, consisting of header, sample and endianness +-- formats. +-- +-- Not all combinations of header, sample and endianness formats are valid; +-- valid combinamtions can be checked with the 'checkFormat' function. +data Format = Format { + headerFormat :: HeaderFormat, + sampleFormat :: SampleFormat, + endianFormat :: EndianFormat +} deriving (Eq, Show) + +-- |Default \'empty\' format, useful when opening files for reading with 'ReadMode'. +defaultFormat :: Format +defaultFormat = Format HeaderFormatNone SampleFormatNone EndianFile + +-- Convert CInt to Format +hsFormat :: CInt -> Format +hsFormat i = + let hf = cToEnum (i .&. (cFromEnum FormatTypeMask) .&. complement (cFromEnum FormatEndMask)) + sf = cToEnum (i .&. (cFromEnum FormatSubMask)) + ef = cToEnum (i .&. (cFromEnum FormatEndMask)) + in + Format { + headerFormat = hf, + sampleFormat = sf, + endianFormat = ef + } + +-- Convert Format to CInt +cFormat :: Format -> CInt +cFormat (Format hf sf ef) = (cFromEnum hf) .|. (cFromEnum sf) .|. (cFromEnum ef) + +-- ==================================================================== +-- Info + +-- |The 'Info' structure is for passing data between the calling function and +-- the library when opening a stream for reading or writing. +data Info = Info { + frames :: Count, -- ^Number of frames in file + samplerate :: Int, -- ^Audio sample rate + channels :: Int, -- ^Number of channels + format :: Format, -- ^Header and sample format + sections :: Int, -- ^Number of sections + seekable :: Bool -- ^'True' when stream is seekable (e.g. local files) +} deriving (Eq, Show) + +-- |Return soundfile duration in seconds computed via the 'Info' fields +-- 'frames' and 'samplerate'. +duration :: Info -> Double +duration info = (fromIntegral $ frames info) / (fromIntegral $ samplerate info) + +-- |Default \'empty\' info, useful when opening files for reading with 'ReadMode'. +defaultInfo :: Info +defaultInfo = Info 0 0 0 defaultFormat 0 False + +-- |This function allows the caller to check if a set of parameters in the +-- 'Info' struct is valid before calling 'openFile' ('WriteMode'). +-- +-- 'checkFormat' returns 'True' if the parameters are valid and 'False' otherwise. + +{-# NOINLINE checkFormat #-} +checkFormat :: Info -> Bool +checkFormat info = + unsafePerformIO (with info (liftM cToBool . {#call unsafe sf_format_check#} . castPtr)) + +-- Storable instance for Info +instance Storable (Info) where + alignment _ = alignment (undefined :: CInt) -- hmm + sizeOf _ = {#sizeof INFO#} + -- Unmarshall Info from C representation + peek ptr = do + frames <- liftM fromIntegral $ {#get SF_INFO.frames#} ptr + samplerate <- liftM fromIntegral $ {#get SF_INFO.samplerate#} ptr + channels <- liftM fromIntegral $ {#get SF_INFO.channels#} ptr + format <- liftM hsFormat $ {#get SF_INFO.format#} ptr + sections <- liftM fromIntegral $ {#get SF_INFO.sections#} ptr + seekable <- liftM toBool $ {#get SF_INFO.seekable#} ptr + return $ Info { + frames = frames, + samplerate = samplerate, + channels = channels, + format = format, + sections = sections, + seekable = seekable + } + -- Marshall Info to C representation + poke ptr info = + do + {#set SF_INFO.frames#} ptr $ fromIntegral $ frames info + {#set SF_INFO.samplerate#} ptr $ fromIntegral $ samplerate info + {#set SF_INFO.channels#} ptr $ fromIntegral $ channels info + {#set SF_INFO.format#} ptr $ cFormat $ format info + {#set SF_INFO.sections#} ptr $ fromIntegral $ sections info + {#set SF_INFO.seekable#} ptr $ fromBool $ seekable info + +-- ==================================================================== +-- Exceptions + +-- |Values of type 'Exception' are thrown by the library when an error occurs. +-- +-- Use 'catch' to catch only exceptions of this type. +data Exception = Exception String deriving (Typeable, Show) + +-- |Return the error string associated with the 'Exception'. +errorString :: Exception -> String +errorString (Exception s) = s + +-- |Catch values of type 'Exception'. +catch :: IO a -> (Exception -> IO a) -> IO a +catch = catchDyn + +throw :: Exception -> a +throw = throwDyn + +raiseError :: Handle -> IO () +raiseError handle = liftM (throw . Exception) $ (peekCString $ {#call pure sf_strerror#} (hPtr handle)) + +checkHandle :: HandlePtr -> IO HandlePtr +checkHandle handle = do + code <- liftM fromIntegral $ {#call unsafe sf_error#} handle + when (code /= 0) $ raiseError (Handle defaultInfo handle) + return handle + +-- ==================================================================== +-- Handle operations + +-- | Abstract file handle. +data Handle = Handle { + hInfo :: Info, -- ^Return the stream 'Info' associated with the 'Handle'. + hPtr :: HandlePtr +} +type HandlePtr = Ptr () + +-- | I\/O mode. +{#enum IOMode {} deriving (Eq, Show)#} +#c +enum IOMode +{ + ReadMode = SFM_READ, + WriteMode = SFM_WRITE, + ReadWriteMode = SFM_RDWR +}; +#endc + +-- |When opening a file for read ('ReadMode'), the format field should be set +-- to 'defaultFormat' before calling 'openFile'. The only exception to this is +-- the case of RAW files, where the caller has to set the samplerate, channels +-- and format fields to valid values. All other fields of the structure are +-- filled in by the library. +-- +-- When opening a file for write ('WriteMode'), the caller must fill in the +-- structure members samplerate, channels, and format. +-- +-- Every call to 'openFile' should be matched with a call to 'hClose' to free +-- up memory allocated during the call to 'openFile'. +-- +-- On success, the 'openFile' function returns a 'Handle' which should be +-- passed as the first parameter to all subsequent libsndfile calls dealing +-- with that audio stream. On fail, the 'openFile' function signals an +-- 'Exception'. +openFile :: FilePath -> IOMode -> Info -> IO Handle +openFile filePath ioMode info = + withCString filePath (\cFilePath -> + with info (\cInfo -> do + cHandle <- {#call unsafe sf_open#} + cFilePath (cFromEnum ioMode) (castPtr cInfo) + >>= checkHandle + newInfo <- peek cInfo + return $ Handle newInfo cHandle)) + +-- |The 'hClose' function closes the stream, deallocates its internal buffers +-- and returns () on success or signals an 'Exception' otherwise. +hClose :: Handle -> IO () +hClose handle = do + {#call unsafe sf_close#} $ hPtr handle + checkHandle nullPtr + return () + +-- |If the stream is opened with 'WriteMode' or 'ReadWriteMode', call the +-- operating system\'s function to force the writing of all file cache buffers +-- to disk. If the file is opened with 'ReadMode' no action is taken. +hFlush :: Handle -> IO () +hFlush (Handle _ handle) = {#call unsafe sf_write_sync#} handle + +-- |Get header format information associated with file. +getFileInfo :: FilePath -> IO Info +getFileInfo filePath = do + h <- openFile filePath ReadMode defaultInfo + let info = hInfo h + hClose h + return info + +-- ==================================================================== +-- seeking + +hIsSeekable :: Handle -> IO Bool +hIsSeekable = return . seekable . hInfo + +{#enum SeekMode {} deriving (Eq, Show)#} +#c +enum SeekMode +{ + AbsoluteSeek = SEEK_SET, + RelativeSeek = SEEK_CUR, + SeekFromEnd = SEEK_END +}; +#endc + +-- Helper function for seeking, modifying either the read pointer, the write +-- pointer, or both. +{-# INLINE hSeek' #-} +hSeek' :: Maybe IOMode -> Handle -> SeekMode -> Count -> IO Count +hSeek' ioMode (Handle _ handle) seekMode frames = do + n <- liftM fromIntegral $ + {#call unsafe sf_seek#} + handle + (cIntConv frames) + ((cFromEnum seekMode) .|. (case ioMode of + Nothing -> 0 + Just m -> cFromEnum m)) + checkHandle handle + return n + +-- |The file seek functions work much like 'System.IO.hseek' with the +-- exception that the non-audio data is ignored and the seek only moves within +-- the audio data section of the file. In addition, seeks are defined in +-- number of (multichannel) frames. Therefore, a seek in a stereo file from +-- the current position forward with an offset of 1 would skip forward by one +-- sample of both channels. +-- +-- like lseek(), the whence parameter can be any one of the following three +-- values: +-- +-- * 'AbsoluteSeek' - The offset is set to the start of the audio data plus +-- offset (multichannel) frames. +-- +-- * 'RelativeSeek' - The offset is set to its current location plus offset +-- (multichannel) frames. +-- +-- * 'SeekFromEnd' - The offset is set to the end of the data plus offset +-- (multichannel) frames. +-- +-- Internally, libsndfile keeps track of the read and write locations using +-- separate read and write pointers. If a file has been opened with a mode of +-- 'ReadWriteMode', calling either 'hSeekRead' or 'hSeekWrite' allows the read +-- and write pointers to be modified separately. 'hSeek' modifies both the +-- read and the write pointer. +-- +-- Note that the frames offset can be negative and in fact should be when +-- SeekFromEnd is used for the whence parameter. +-- +-- 'hSeek' will return the offset in (multichannel) frames from the start of +-- the audio data, or signal an error when an attempt is made to seek beyond +-- the start or end of the file. + +hSeek :: Handle -> SeekMode -> Count -> IO Count +hSeek = hSeek' Nothing + +--hSeek (Handle _ handle) seekMode frames = do +-- n <- liftM fromIntegral $ {#call unsafe sf_seek#} handle (cIntConv frames) (cFromEnum seekMode) +-- checkHandle handle +-- return n + +-- |Like 'hSeek', but only the read pointer is modified. +hSeekRead :: Handle -> SeekMode -> Count -> IO Count +hSeekRead = hSeek' (Just ReadMode) + +-- |Like 'hSeek', but only the write pointer is modified. +hSeekWrite :: Handle -> SeekMode -> Count -> IO Count +hSeekWrite = hSeek' (Just WriteMode) + +-- ==================================================================== +-- string access + +-- |Header string field types. +{#enum StringType {underscoreToCase} deriving (Eq, Show)#} +#c +enum StringType +{ + STR_TITLE = SF_STR_TITLE, + STR_COPYRIGHT = SF_STR_COPYRIGHT, + STR_SOFTWARE = SF_STR_SOFTWARE, + STR_ARTIST = SF_STR_ARTIST, + STR_COMMENT = SF_STR_COMMENT, + STR_DATE = SF_STR_DATE +}; +#endc + +-- |The 'getString' function returns the specificed string from the stream +-- header in the 'Maybe' monad if it exists and 'Nothing' otherwise. +getString :: Handle -> StringType -> IO (Maybe String) +getString (Handle _ handle) t = do + ptr <- {#call unsafe sf_get_string#} handle (cFromEnum t) + if ptr == (nullPtr :: Ptr CChar) + then return Nothing + else liftM Just $ peekCString =<< (return ptr) + + +-- |The 'setString' function sets the string data associated with the +-- respective 'StringType'. +setString :: Handle -> StringType -> String -> IO () +setString (Handle _ handle) t s = + withCString s (\cs -> do + {#call unsafe sf_set_string#} handle (cFromEnum t) cs + checkHandle handle + return ()) + +-- EOF diff --git a/hsndfile.cabal b/hsndfile.cabal new file mode 100644 --- /dev/null +++ b/hsndfile.cabal @@ -0,0 +1,27 @@ +Name: hsndfile +Version: 0.1.1 +Category: Sound +License: GPL +License-File: COPYING +Copyright: Stefan Kersten, 2007-2008 +Author: Stefan Kersten +Maintainer: Stefan Kersten +Stability: Experimental +Homepage: http://darcs.k-hornz.de/cgi-bin/darcsweb.cgi?r=hsndfile;a=summary +Synopsis: Haskell bindings for libsndfile +Description: Haskell bindings for libsndfile. + . + Libsndfile is a comprehensive C library for reading + and writing a large number of soundfile formats: + . +Tested-With: GHC +Build-Type: Simple +Build-Depends: array, base, carray, haskell98 +Exposed-Modules: Sound.File.Sndfile +Other-Modules: C2HS, + Sound.File.Sndfile.Buffer, + Sound.File.Sndfile.Buffer.IOCArray, + Sound.File.Sndfile.Buffer.Storable, + Sound.File.Sndfile.Interface +Ghc-Options: -Wall +Extra-Libraries: sndfile