sway/include/ipc.h

#ifndef _SWAY_IPC_H
#define _SWAY_IPC_H

enum ipc_command_type {
	IPC_COMMAND = 0,
	IPC_GET_WORKSPACES = 1,
	IPC_SUBSCRIBE = 2,
	IPC_GET_OUTPUTS	= 3,
	IPC_GET_TREE = 4,
	IPC_GET_MARKS = 5,
	IPC_GET_BAR_CONFIG = 6,
	IPC_GET_VERSION	= 7,
	// Events send from sway to clients. Events have the higest bit set.
	IPC_EVENT_WORKSPACE = (1 << 31 | 0),
	IPC_EVENT_OUTPUT = (1 << 31 | 1),
	IPC_EVENT_MODE = (1 << 31 | 2),
	IPC_EVENT_WINDOW = (1 << 31 | 3),
	IPC_EVENT_BARCONFIG_UPDATE = (1 << 31 | 4),
	IPC_EVENT_BINDING = (1 << 31 | 5),
	IPC_SWAY_GET_PIXELS = 0x81
};

#endif