1 files changed, 82 insertions, 0 deletions
diff --git a/hsm-cam/Hsm/Cam/FFI.hsc b/hsm-cam/Hsm/Cam/FFI.hsc
new file mode 100644
index 0000000..6c5dd3d
--- /dev/null
+++ b/hsm-cam/Hsm/Cam/FFI.hsc
@@ -0,0 +1,82 @@
+{-# LANGUAGE CApiFFI #-}
+
+module Hsm.Cam.FFI
+  ( frameWidth
+  , frameHeight
+  , makeLogger
+  , registerLogger
+  , makeRequestCallback
+  , registerRequestCallback
+  , startCameraManager
+  , stopCameraManager
+  , acquireCamera
+  , releaseCamera
+  , allocateFrameBuffer
+  , freeFrameBuffer
+  , startCamera
+  , stopCamera
+  , createRequest
+  , getDmaBufferFd
+  , requestFrame
+  )
+where
+
+import Foreign.C.String (CString)
+import Foreign.C.Types (CInt (CInt))
+import Foreign.Ptr (FunPtr)
+import System.Posix.Types (Fd (Fd))
+
+type Logger = Int -> CString -> IO ()
+
+type RequestCallback = IO ()
+
+foreign import capi safe "Cam.hpp value FRAME_WIDTH"
+  frameWidth :: Int
+
+foreign import capi safe "Cam.hpp value FRAME_HEIGHT"
+  frameHeight :: Int
+
+foreign import ccall safe "wrapper"
+  makeLogger :: Logger -> IO (FunPtr Logger)
+
+foreign import capi safe "Cam.hpp register_logger"
+  registerLogger :: FunPtr Logger -> IO ()
+
+foreign import ccall safe "wrapper"
+  makeRequestCallback :: RequestCallback -> IO (FunPtr RequestCallback)
+
+foreign import capi safe "Cam.hpp register_request_callback"
+  registerRequestCallback :: FunPtr RequestCallback -> IO ()
+
+foreign import capi safe "Cam.hpp start_camera_manager"
+  startCameraManager :: IO ()
+
+foreign import capi safe "Cam.hpp stop_camera_manager"
+  stopCameraManager :: IO ()
+
+foreign import capi safe "Cam.hpp acquire_camera"
+  acquireCamera :: IO ()
+
+foreign import capi safe "Cam.hpp release_camera"
+  releaseCamera :: IO ()
+
+foreign import capi safe "Cam.hpp allocate_frame_buffer"
+  allocateFrameBuffer :: IO ()
+
+foreign import capi safe "Cam.hpp free_frame_buffer"
+  freeFrameBuffer :: IO ()
+
+foreign import capi safe "Cam.hpp start_camera"
+  startCamera :: IO ()
+
+foreign import capi safe "Cam.hpp stop_camera"
+  stopCamera :: IO ()
+
+foreign import capi safe "Cam.hpp create_request"
+  createRequest :: IO ()
+
+foreign import capi safe "Cam.hpp get_dma_buffer_fd"
+  getDmaBufferFd :: IO Fd
+
+foreign import capi safe "Cam.hpp request_frame"
+  requestFrame :: IO ()