{- |
Copyright  : Will Thompson, Iñaki García Etxebarria and Jonas Platte
License    : LGPL-2.1
Maintainer : Iñaki García Etxebarria (garetxe@gmail.com)
-}

module GI.GstVideo.Structs.VideoChromaResample
    ( 

-- * Exported types
    VideoChromaResample(..)                 ,
    noVideoChromaResample                   ,


 -- * Methods
-- ** free #method:free#
    VideoChromaResampleFreeMethodInfo       ,
    videoChromaResampleFree                 ,


-- ** getInfo #method:getInfo#
    VideoChromaResampleGetInfoMethodInfo    ,
    videoChromaResampleGetInfo              ,




    ) where

import Data.GI.Base.ShortPrelude
import qualified Data.GI.Base.ShortPrelude as SP
import qualified Data.GI.Base.Overloading as O
import qualified Prelude as P

import qualified Data.GI.Base.Attributes as GI.Attributes
import qualified Data.GI.Base.ManagedPtr as B.ManagedPtr
import qualified Data.GI.Base.GError as B.GError
import qualified Data.GI.Base.GVariant as B.GVariant
import qualified Data.GI.Base.GParamSpec as B.GParamSpec
import qualified Data.GI.Base.CallStack as B.CallStack
import qualified Data.Text as T
import qualified Data.ByteString.Char8 as B
import qualified Data.Map as Map
import qualified Foreign.Ptr as FP


newtype VideoChromaResample = VideoChromaResample (ManagedPtr VideoChromaResample)
-- XXX Wrapping a foreign struct/union with no known destructor or size, leak?
instance WrappedPtr VideoChromaResample where
    wrappedPtrCalloc = return nullPtr
    wrappedPtrCopy = return
    wrappedPtrFree = Nothing

noVideoChromaResample :: Maybe VideoChromaResample
noVideoChromaResample = Nothing


instance O.HasAttributeList VideoChromaResample
type instance O.AttributeList VideoChromaResample = VideoChromaResampleAttributeList
type VideoChromaResampleAttributeList = ('[ ] :: [(Symbol, *)])

-- method VideoChromaResample::free
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "resample", argType = TInterface (Name {namespace = "GstVideo", name = "VideoChromaResample"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GstVideoChromaResample", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gst_video_chroma_resample_free" gst_video_chroma_resample_free :: 
    Ptr VideoChromaResample ->              -- resample : TInterface (Name {namespace = "GstVideo", name = "VideoChromaResample"})
    IO ()

{- |
Free /@resample@/
-}
videoChromaResampleFree ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    VideoChromaResample
    {- ^ /@resample@/: a 'GI.GstVideo.Structs.VideoChromaResample.VideoChromaResample' -}
    -> m ()
videoChromaResampleFree resample = liftIO $ do
    resample' <- unsafeManagedPtrGetPtr resample
    gst_video_chroma_resample_free resample'
    touchManagedPtr resample
    return ()

data VideoChromaResampleFreeMethodInfo
instance (signature ~ (m ()), MonadIO m) => O.MethodInfo VideoChromaResampleFreeMethodInfo VideoChromaResample signature where
    overloadedMethod _ = videoChromaResampleFree

-- method VideoChromaResample::get_info
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "resample", argType = TInterface (Name {namespace = "GstVideo", name = "VideoChromaResample"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GstVideoChromaResample", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "n_lines", argType = TBasicType TUInt, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the number of input lines", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "offset", argType = TBasicType TInt, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the first line", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gst_video_chroma_resample_get_info" gst_video_chroma_resample_get_info :: 
    Ptr VideoChromaResample ->              -- resample : TInterface (Name {namespace = "GstVideo", name = "VideoChromaResample"})
    Word32 ->                               -- n_lines : TBasicType TUInt
    Int32 ->                                -- offset : TBasicType TInt
    IO ()

{- |
The resampler must be fed /@nLines@/ at a time. The first line should be
at /@offset@/.
-}
videoChromaResampleGetInfo ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    VideoChromaResample
    {- ^ /@resample@/: a 'GI.GstVideo.Structs.VideoChromaResample.VideoChromaResample' -}
    -> Word32
    {- ^ /@nLines@/: the number of input lines -}
    -> Int32
    {- ^ /@offset@/: the first line -}
    -> m ()
videoChromaResampleGetInfo resample nLines offset = liftIO $ do
    resample' <- unsafeManagedPtrGetPtr resample
    gst_video_chroma_resample_get_info resample' nLines offset
    touchManagedPtr resample
    return ()

data VideoChromaResampleGetInfoMethodInfo
instance (signature ~ (Word32 -> Int32 -> m ()), MonadIO m) => O.MethodInfo VideoChromaResampleGetInfoMethodInfo VideoChromaResample signature where
    overloadedMethod _ = videoChromaResampleGetInfo

type family ResolveVideoChromaResampleMethod (t :: Symbol) (o :: *) :: * where
    ResolveVideoChromaResampleMethod "free" o = VideoChromaResampleFreeMethodInfo
    ResolveVideoChromaResampleMethod "getInfo" o = VideoChromaResampleGetInfoMethodInfo
    ResolveVideoChromaResampleMethod l o = O.MethodResolutionFailed l o

instance (info ~ ResolveVideoChromaResampleMethod t VideoChromaResample, O.MethodInfo info VideoChromaResample p) => O.IsLabelProxy t (VideoChromaResample -> p) where
    fromLabelProxy _ = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)

#if MIN_VERSION_base(4,9,0)
instance (info ~ ResolveVideoChromaResampleMethod t VideoChromaResample, O.MethodInfo info VideoChromaResample p) => O.IsLabel t (VideoChromaResample -> p) where
    fromLabel _ = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)
#endif