devinput.h

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#ifndef __DEV_INPUT_H__
#define __DEV_INPUT_H__
 
#include <stdint.h>
#include <aurora.h>
 
struct __VFS_NODE__;
typedef struct __VFS_NODE__ AuVFSNode;
 
#define LEFT_CLICK        0x01
#define RIGHT_CLICK       0x02
#define MIDDLE_CLICK      0x04
#define MOUSE_SCROLL_UP   0x05
#define MOUSE_SCROLL_DOWN 0x06
 
#define AU_INPUT_MOUSE  1
#define AU_INPUT_KEYBOARD 2
#define AU_INPUT_TOUCH 3
 
#define MOUSE_IOCODE_SETPOS  10
#define INPUT_RING_IOCODE_GET_STATS 11
 
 
#define NUM_MOUSE_PACKETS    20
#define NUM_KEYBOARD_PACKETS 512
#define NUM_INPUT_RING_PACKETS 256
 
#ifdef ARCH_X64
#pragma pack(push,1)
#endif
typedef struct _au_input_msg_ {
    uint8_t type;
    int32_t xpos;
    int32_t ypos;
    uint8_t button_state;
    uint32_t code;
    uint32_t code1;
    uint32_t code3;
    uint32_t code4;
}AuInputMessage;
 
/* Lock-free SPSC stream used by latency-sensitive consumers such as DeodhaiXR.
 * Producers publish complete AuInputMessage records; readers drain without
 * blocking. Indices are owned by one side each and are synchronized with the
 * AArch64 data barrier in the kernel implementation. --axiss */
typedef struct _au_input_ring_ {
    volatile uint32_t read;
    volatile uint32_t write;
    volatile uint32_t dropped;
    AuInputMessage packets[NUM_INPUT_RING_PACKETS];
} AuInputRing;
 
typedef struct _au_input_ring_stats_ {
    uint32_t mouse_dropped;
    uint32_t keyboard_dropped;
    uint32_t mouse_pending;
    uint32_t keyboard_pending;
} AuInputRingStats;
 
#ifdef ARCH_X64
#pragma pack(pop)
#endif
 
/*
* AuDevInputInitialise -- mounts to pipe
* for hid devices, @mice and @kybrd
*/
extern void AuDevInputInitialise();
 
/*
* AuDevReadMice -- reads packets from pipe
* to buffer
* @para, inputmsg -- Pointer to the buffer
*/
AU_EXTERN AU_EXPORT void AuDevReadMice(AuInputMessage* inputmsg);
 
/*
* AuDevWriteMice -- writes a packet to pipe
* @param outmsg -- packet to write
*/
AU_EXTERN AU_EXPORT void AuDevWriteMice(AuInputMessage* outmsg);
 
/*
* AuDevReadkybrd -- reads packets from pipe
* to buffer
* @para, inputmsg -- Pointer to the buffer
*/
AU_EXTERN AU_EXPORT void AuDevReadKybrd(AuInputMessage* inputmsg);
 
/*
* AuDevReadConsoleKybrd -- reads packets from console-specific keyboard queue
* @para, inputmsg -- Pointer to the buffer
*/
AU_EXTERN AU_EXPORT void AuDevReadConsoleKybrd(AuInputMessage* inputmsg);
 
/*
* AuDevWritekybrd -- writes a packet to pipe
* @param outmsg -- packet to write
*/
AU_EXTERN AU_EXPORT void AuDevWriteKybrd(AuInputMessage* outmsg);
 
AU_EXTERN AU_EXPORT size_t AuDevInputRingRead(AuVFSNode* fs, AuVFSNode* file,
        uint64_t* buffer, uint32_t length);
 
#endif