IR command：
NEC code
#define    SYSTEM_CODE 	       0x00FF


#define  NEC_HDMI_INPUT_1          0x19e6
#define  NEC_HDMI_INPUT_2          0x1be4
#define  NEC_HDMI_INPUT_3          0x11ee
#define  NEC_HDMI_INPUT_4          0x15ea
#define  NEC_HDMI_INPUT_5          0x17e8
#define  NEC_HDMI_INPUT_6          0x12ed
#define  NEC_HDMI_INPUT_7          0x59a6
#define  NEC_HDMI_INPUT_8          0x08f7
#define  NEC_HDMI_INPUT_PRE       0x55aa
#define  NEC_HDMI_INPUT_NEXT     0x48b7 
#define  NEC_HDMI_OUTPUT_A        0x47b8
#define  NEC_HDMI_ OUTPUT_B        0x07f8
#define  NEC_HDMI_ OUTPUT_C        0x40bf
#define  NEC_HDMI_ OUTPUT_D        0x02fd
#define  NEC_HDMI_ OUTPUT_E        0x18e7
#define  NEC_HDMI_ OUTPUT_F        0x44bb
#define  NEC_HDMI_ OUTPUT_G        0x0ff0
#define  NEC_HDMI_ OUTPUT_H        0x51ae
#define  NEC_HDMI_ OUTPUT_ALL     0x0af5
#define  NEC_STANDBY                      0x14eb