rom/devs/keyboard/keyboard_intern.h

   1 #ifndef  KEYBOARD_INTERN_H
   2 #define  KEYBOARD_INTERN_H
   3
   4 /*
   5     Copyright © 1995-2006, The AROS Development Team. All rights reserved.
   6     $Id$
   7
   8     Desc:
   9     Lang: English
  10 */
  11
  12 #include <exec/types.h>
  13 #include <exec/devices.h>
  14 #include <exec/semaphores.h>
  15 #include <exec/interrupts.h>
  16 #include <exec/devices.h>
  17
  18 #include <oop/oop.h>
  19
  20 #define KB_MAXKEYS     256
  21 #define KB_MATRIXSIZE  (KB_MAXKEYS/(sizeof(UBYTE)*8))
  22
  23 #define KB_BUFFERSIZE  128
  24
  25 struct KeyboardBase
  26 {
  27     struct Device      kb_device;
  28     struct Library    *kb_KbdHiddBase;
  29
  30     struct MinList          kb_PendingQueue;  /* IOrequests (KBD_READEVENT) not done quick */
  31     struct SignalSemaphore  kb_QueueLock;
  32     struct MinList          kb_ResetHandlerList;
  33
  34     struct Interrupt  kb_Interrupt;     /* Interrupt to invoke in case of keypress (or
  35                                            releases) and there are pending requests */
  36
  37     UWORD   kb_nHandlers;               /* Number of reset handlers added */
  38     UWORD  *kb_keyBuffer;
  39     UWORD   kb_writePos;
  40     BOOL    kb_ResetPhase;              /* True if reset has begun */
  41     UBYTE  *kb_Matrix;
  42
  43     OOP_Object     *kb_Hidd;            /* Hidd object to use */
  44     struct Library *kb_OOPBase;
  45
  46     OOP_AttrBase    HiddKbdAB_;
  47
  48     /* FIXME:
  49      * m68k lowlevel.library stores only io_Device field after keyboard.device
  50      * has been opened and when it is time to close it, lowlevel reuses old
  51      * iorequest (which was used for other purposes originally), sets io_Device
  52      * and calls CloseDevice(). Which means we can't assume io_Unit is valid.
  53      * we leak memory if above happens but it is much better than freeing
  54      * random memory
  55      */
  56     struct MinList kb_kbunits;
  57 };
  58
  59
  60 typedef struct KBUnit
  61 {
  62         struct MinNode node;
  63     UWORD  kbu_readPos;         /* Position in the key buffer */
  64     UWORD  kbu_Qualifiers;      /* Known qualifiers at this moment */
  65     UWORD  kbu_LastCode;        /* Previous rawkey code */
  66     UBYTE  kbu_LastQuals;       /* Lower half of previous qualifiers */
  67     UWORD  kbu_LastLastCode;    /* The rawkey code two keys ago... */
  68     UBYTE  kbu_LastLastQuals;   /* ...and the lower half of qualifiers
  69                                    associated with that code */
  70
  71     /* Note: The xxxQuals is UBYTE for now. They may be UWORDS at a later
  72              implementation but as we want to be binary compatible,
  73              we just store UBYTEs in the InputEvent. This goes for
  74              deadkey handling too, but as it is a fact that keycodes will
  75              be UWORDS here in the future, it's so now. Regarding the
  76              qualifiers, it may be enough with 8. */
  77
  78     UBYTE  kbu_flags;           /* For unit flags definitions, see below */
  79 } KBUnit;
  80
  81 #define KBUB_PENDING 0          /* Unit has pending request for keyevents */
  82
  83 #define KBUF_PENDING 0x01
  84
  85 #undef HiddKbdAB
  86 #define HiddKbdAB KBBase->HiddKbdAB_
  87
  88 #endif /* KEYBOARD_INTERN_H */
  89