AcessNative - Mouse implimented, woot!

[tpg/acess2.git] / AcessNative / acesskernel_src / mouse.c

diff --git a/AcessNative/acesskernel_src/mouse.c b/AcessNative/acesskernel_src/mouse.c
index e69de29..0ff9e8a 100644 (file)
--- a/AcessNative/acesskernel_src/mouse.c
+++ b/AcessNative/acesskernel_src/mouse.c
@@ -0,0 +1,170 @@
+/*
+ * Acess2 Kernel - Mouse Mulitplexing Driver
+ * - By John Hodge (thePowersGang)
+ *
+ * main.c
+ * - Mouse mulitplexing
+ */
+#define DEBUG  0
+#define VERSION        VER2(0,1)
+#include <acess.h>
+#include <modules.h>
+#include <fs_devfs.h>
+#include "include/mouse_int.h"
+
+// === PROTOTYPES ===
+ int   Mouse_Install(char **Arguments);
+ int   Mouse_Cleanup(void);
+// - "User" side
+ int   Mouse_Root_ReadDir(tVFS_Node *Node, int Pos, char Dest[FILENAME_MAX]);
+tVFS_Node      *Mouse_Root_FindDir(tVFS_Node *Node, const char *Name);
+ int   Mouse_Dev_IOCtl(tVFS_Node *Node, int ID, void *Data);
+size_t Mouse_Dev_Read(tVFS_Node *Node, off_t Offset, size_t Length, void *Data);
+// - Device Side
+void   Mouse_HandleEvent(Uint32 ButtonState, int *AxisDeltas, int *AxisValues);
+
+// === GLOBALS ===
+tVFS_NodeType  gMouse_RootNodeType = {
+       .ReadDir = Mouse_Root_ReadDir,
+       .FindDir = Mouse_Root_FindDir
+};
+tVFS_NodeType  gMouse_DevNodeType = {
+       .IOCtl = Mouse_Dev_IOCtl,
+       .Read = Mouse_Dev_Read
+};
+tDevFS_Driver  gMouse_DevInfo = {
+       NULL, "Mouse",
+       { .Flags = VFS_FFLAG_DIRECTORY, .Type = &gMouse_RootNodeType, .Size = 1 }
+};
+tPointer       gMouse_Pointer;
+
+// === CODE ===
+/**
+ * \brief Initialise the keyboard driver
+ */
+int Mouse_Install(char **Arguments)
+{
+       /// - Register with DevFS
+       DevFS_AddDevice( &gMouse_DevInfo );
+
+       gMouse_Pointer.Node.Type = &gMouse_DevNodeType;
+       gMouse_Pointer.Node.ImplPtr = &gMouse_Pointer;
+       gMouse_Pointer.FileHeader = (void*)gMouse_Pointer.FileData;
+       gMouse_Pointer.Axies = (void*)( gMouse_Pointer.FileHeader + 1 );
+       gMouse_Pointer.Buttons = (void*)( gMouse_Pointer.Axies + MAX_AXIES );
+       gMouse_Pointer.FileHeader->NAxies = MAX_AXIES;
+       gMouse_Pointer.FileHeader->NButtons = MAX_BUTTONS;
+
+       return 0;
+}
+
+/**
+ * \brief Pre-unload cleanup function
+ */
+int Mouse_Cleanup(void)
+{
+       return 0;
+}
+
+// --- VFS Interface ---
+int Mouse_Root_ReadDir(tVFS_Node *Node, int Pos, char Dest[FILENAME_MAX])
+{
+       if( Pos != 0 )
+               return -EINVAL;
+       strcpy(Dest, "system");
+       return 0;
+}
+
+tVFS_Node *Mouse_Root_FindDir(tVFS_Node *Node, const char *Name)
+{
+       if( strcmp(Name, "system") != 0 )       return NULL;
+       return &gMouse_Pointer.Node;
+}
+
+static const char *csaIOCTL_NAMES[] = {DRV_IOCTLNAMES, DRV_JOY_IOCTLNAMES, NULL};
+/**
+ * \brief IOCtl handler for the mouse
+ */
+int Mouse_Dev_IOCtl(tVFS_Node *Node, int ID, void *Data)
+{
+       tJoystick_NumValue      *numval = Data;
+       tPointer        *ptr = Node->ImplPtr;
+       switch(ID)
+       {
+       BASE_IOCTLS(DRV_TYPE_MOUSE, "Mouse", VERSION, csaIOCTL_NAMES);
+
+       case JOY_IOCTL_GETSETAXISLIMIT:
+               if( !numval || !CheckMem(numval, sizeof(*numval)) )
+                       return -1;
+               LOG("GetSetAxisLimit %i = %i", numval->Num, numval->Value);
+               if(numval->Num < 0 || numval->Num >= ptr->FileHeader->NAxies)
+                       return 0;
+               if(numval->Value != -1)
+                       ptr->AxisLimits[numval->Num] = numval->Value;
+               return ptr->AxisLimits[numval->Num];
+
+       case JOY_IOCTL_GETSETAXISPOSITION:
+               if( !numval || !CheckMem(numval, sizeof(*numval)) )
+                       return -1;
+               if(numval->Num < 0 || numval->Num >= ptr->FileHeader->NAxies)
+                       return 0;
+               if(numval->Value != -1)
+                       ptr->Axies[numval->Num].CursorPos = numval->Value;
+               return ptr->Axies[numval->Num].CursorPos;
+       }
+       return -1;
+}
+
+/**
+ * \brief Read from a device
+ */
+size_t Mouse_Dev_Read(tVFS_Node *Node, off_t Offset, size_t Length, void *Data)
+{
+       tPointer *ptr = Node->ImplPtr;
+        int    n_buttons = ptr->FileHeader->NButtons;
+        int    n_axies = ptr->FileHeader->NAxies;
+
+       ENTER("pNode iLength pData", Node, Length, Data);
+
+       // TODO: Locking (Acquire)
+
+       Length = MIN(
+               Length, 
+               sizeof(tJoystick_FileHeader) + n_axies*sizeof(tJoystick_Axis) + n_buttons
+               );
+
+       // Mark as checked
+       VFS_MarkAvaliable( Node, 0 );
+
+       memcpy( Data, ptr->FileData, Length );
+
+       // TODO: Locking (Release)
+
+       LEAVE('i', Length);
+       return Length;
+}
+
+// --- Device Interface ---
+/*
+ * Handle a mouse event (movement or button press/release)
+ * - See Input/Mouse/include/mouse.h
+ */
+void Mouse_HandleEvent(Uint32 ButtonState, int *AxisDeltas, int *AxisValues)
+{
+       tPointer *ptr = &gMouse_Pointer;
+       
+       ENTER("pHandle xButtonState pAxisDeltas", Handle, ButtonState, AxisDeltas);
+
+       // Update cursor position
+       for( int i = 0; i < 2; i ++ )
+       {
+               ptr->Axies[i].CursorPos = AxisValues[i];
+               ptr->Axies[i].CurValue = AxisDeltas ? AxisDeltas[i] : 0;
+       }
+       for( int i = 0; i < 5; i ++ )
+               ptr->Buttons[i] = ButtonState & (1 << i) ? 255 : 0;
+
+       VFS_MarkAvaliable( &ptr->Node, 1 );
+       LEAVE('-');
+}
+