jsfw/net.h
2022-08-31 18:54:14 +02:00

78 lines
1.8 KiB
C

// vi:ft=c
#ifndef NET_H_
#define NET_H_
#include <linux/input.h>
#include <stdint.h>
#include <stdlib.h>
typedef enum {
DeviceInfo = 1,
DeviceReport = 2,
DeviceDestroy = 3,
ControllerState = 4,
} MessageCode;
// Alignment 4
typedef struct {
MessageCode code;
// + 1 byte of padding
uint16_t abs_count;
uint16_t rel_count;
uint16_t key_count;
uint16_t abs_id[ABS_CNT];
// + 2 bytes of padding per abs
uint32_t abs_min[ABS_CNT];
uint32_t abs_max[ABS_CNT];
uint32_t abs_fuzz[ABS_CNT];
uint32_t abs_flat[ABS_CNT];
uint32_t abs_res[ABS_CNT];
uint16_t rel_id[REL_CNT];
uint16_t key_id[KEY_CNT];
} MessageDeviceInfo;
#define MSS_DEVICE_INFO(abs, rel, key) (8 + abs * 24 + rel * 2 + key * 2 + 1)
// MSS -> Message Serialized Size:
// Size of the data of the message when serialized (no alignment / padding)
// 4 aligned
typedef struct {
MessageCode code;
// + 1 byte of padding
uint16_t abs_count;
uint16_t rel_count;
uint16_t key_count;
uint32_t abs[ABS_CNT];
uint32_t rel[REL_CNT];
uint8_t key[KEY_CNT];
} MessageDeviceReport;
#define MSS_DEVICE_REPORT(abs, rel, key) (6 + abs * 4 + rel * 4 + key * 1 + 1)
// 1 aligned
typedef struct {
MessageCode code;
uint8_t led[3];
uint8_t small_rumble;
uint8_t big_rumble;
uint8_t flash_on;
uint8_t flash_off;
} MessageControllerState;
#define MSS_CONTROLLER_STATE 7
typedef union {
MessageCode code;
MessageDeviceInfo device_info;
MessageDeviceReport device_report;
MessageControllerState controller_state;
} Message;
int msg_deserialize(const uint8_t *buf, size_t len, Message * restrict dst);
int msg_serialize(uint8_t * restrict buf, size_t len, const Message *msg);
#endif