4 #define INTF_KEY_QUIT 0x01
5 #define INTF_KEY_SET_CHANNEL 0x02
6 #define INTF_KEY_DEC_VOLUME 0x03
7 #define INTF_KEY_INC_VOLUME 0x04
8 #define INTF_KEY_TOGGLE_VOLUME 0x05
9 #define INTF_KEY_DEC_GAMMA 0x06
10 #define INTF_KEY_INC_GAMMA 0x07
11 #define INTF_KEY_TOGGLE_GRAYSCALE 0x08
12 #define INTF_KEY_TOGGLE_INTERFACE 0x09
13 #define INTF_KEY_TOGGLE_INFO 0x0A
14 #define INTF_KEY_TOGGLE_SCALING 0x0B
15 #define INTF_KEY_UNKNOWN 0x0C