| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Codec.FFmpeg.Scaler
- data ImageInfo = ImageInfo {}
- swsInit :: ImageInfo -> ImageInfo -> SwsAlgorithm -> IO SwsContext
- swsReset :: SwsContext -> ImageInfo -> ImageInfo -> SwsAlgorithm -> IO SwsContext
- class SwsCompatible a where
- withSws :: SwsCompatible a => a -> (Ptr (Ptr CUChar) -> Ptr CInt -> CInt -> IO r) -> IO r
- swsScale :: (SwsCompatible src, SwsCompatible dst) => SwsContext -> src -> dst -> IO CInt
Documentation
swsInit :: ImageInfo -> ImageInfo -> SwsAlgorithm -> IO SwsContext Source
swsInit srcInfo dstInfo alg initializations an SwsContext to
scale and convert from srcInfo to dstInfo using the algorithm
alg when scaling.
swsReset :: SwsContext -> ImageInfo -> ImageInfo -> SwsAlgorithm -> IO SwsContext Source
Obtain a context for converting the source to destination
format. If the given context is already configured for the required
conversion, it is returned. Otherwise, the given context is freed
and a new, configured context is returned. See swsInit for a
description of the arguments.
class SwsCompatible a where Source
A common interface required of arguments to swsScale (a higher
level wrapper for the sws_scale function from libswscale).
Methods
swsPlanes :: a -> (Ptr (Ptr CUChar) -> IO r) -> IO r Source
swsStrides :: a -> (Ptr CInt -> IO r) -> IO r Source
sliceHeight :: a -> (CInt -> IO r) -> IO r Source
Instances
| SwsCompatible AVFrame | |
| (Pixel a, Storable (PixelBaseComponent a)) => SwsCompatible (Image a) | |
| SwsCompatible (AVPixelFormat, V2 CInt, Vector CUChar) |
withSws :: SwsCompatible a => a -> (Ptr (Ptr CUChar) -> Ptr CInt -> CInt -> IO r) -> IO r Source
Supplies a continuation with all components provided by the
SwsCompatible class.
swsScale :: (SwsCompatible src, SwsCompatible dst) => SwsContext -> src -> dst -> IO CInt Source
swsScale ctx src dst scales the entire src image to dst
using the previously initialized ctx.