blob: 3ef4f989a98d2a89cb63a641925d53d1111c59ef (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
{-# LANGUAGE CApiFFI #-}
module Hsm.Stream.FFI
( GstElement
, gstInit
, gstDeinit
, gstParseLaunch
, gstStatePlaying
, gstStateNull
, gstElementSetState
, gstObjectUnref
)
where
import Foreign.C.String (CString)
import Foreign.C.Types (CChar, CInt)
import Foreign.Ptr (Ptr)
data GstElement
data GError
newtype GStateChangeReturn
= GStateChangeReturn Int
newtype GState
= GState Int
foreign import capi safe "gst/gst.h gst_init"
gstInit :: Ptr CInt -> Ptr (Ptr (Ptr CChar)) -> IO ()
foreign import capi safe "gst/gst.h gst_deinit"
gstDeinit :: IO ()
foreign import capi safe "gst/gst.h gst_parse_launch"
gstParseLaunch :: CString -> Ptr GError -> IO (Ptr GstElement)
foreign import capi safe "gst/gst.h value GST_STATE_PLAYING"
gstStatePlaying :: GState
foreign import capi safe "gst/gst.h value GST_STATE_NULL"
gstStateNull :: GState
foreign import capi safe "gst/gst.h gst_element_set_state"
gstElementSetState :: Ptr GstElement -> GState -> IO GStateChangeReturn
foreign import capi safe "gst/gst.h gst_object_unref"
gstObjectUnref :: Ptr GstElement -> IO ()
|
