104 lines
2.3 KiB
C
104 lines
2.3 KiB
C
// vi:ft=c
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#ifndef NET_H_
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#define NET_H_
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#include <linux/input-event-codes.h>
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#include <stdint.h>
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#include <stdlib.h>
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typedef enum {
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NoMessage = 0,
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DeviceInfo = 1,
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DeviceReport = 2,
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DeviceDestroy = 3,
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ControllerState = 4,
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Request = 5,
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} MessageCode;
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// Alignment 4
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typedef struct {
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MessageCode code;
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// + 1 byte of padding
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uint16_t index;
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uint16_t abs_count;
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uint16_t rel_count;
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uint16_t key_count;
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uint16_t abs_id[ABS_CNT];
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// + 2 bytes of padding per abs
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uint32_t abs_min[ABS_CNT];
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uint32_t abs_max[ABS_CNT];
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uint32_t abs_fuzz[ABS_CNT];
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uint32_t abs_flat[ABS_CNT];
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uint32_t abs_res[ABS_CNT];
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uint16_t rel_id[REL_CNT];
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uint16_t key_id[KEY_CNT];
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} MessageDeviceInfo;
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#define MSS_DEVICE_INFO(abs, rel, key) (10 + abs * 24 + rel * 2 + key * 2 + 1)
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// MSS -> Message Serialized Size:
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// Size of the data of the message when serialized (no alignment / padding)
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// 4 aligned
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typedef struct {
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MessageCode code;
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// + 1 byte of padding
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uint16_t index;
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uint16_t abs_count;
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uint16_t rel_count;
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uint16_t key_count;
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uint32_t abs[ABS_CNT];
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uint32_t rel[REL_CNT];
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uint8_t key[KEY_CNT];
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} MessageDeviceReport;
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#define MSS_DEVICE_REPORT(abs, rel, key) (8 + abs * 4 + rel * 4 + key * 1 + 1)
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// 1 aligned
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typedef struct {
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MessageCode code;
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// + 1 byte of padding
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uint16_t index;
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uint8_t led[3];
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uint8_t small_rumble;
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uint8_t big_rumble;
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uint8_t flash_on;
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uint8_t flash_off;
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} MessageControllerState;
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#define MSS_CONTROLLER_STATE 10
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typedef struct {
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MessageCode code;
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char **requests;
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uint16_t request_count;
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} MessageRequest;
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#define MSS_REQUEST(count) (2 + 2 * count)
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typedef struct {
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MessageCode code;
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// + 1 byte of padding
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uint16_t index;
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} MessageDestroy;
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#define MSS_DESTROY 3
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typedef union {
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MessageCode code;
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MessageRequest request;
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MessageDestroy destroy;
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MessageDeviceInfo device_info;
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MessageDeviceReport device_report;
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MessageControllerState controller_state;
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} Message;
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int msg_deserialize(const uint8_t *buf, size_t len, Message *restrict dst);
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int msg_serialize(uint8_t *restrict buf, size_t len, const Message *msg);
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void msg_free(Message *msg);
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#endif
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