-/* Dual mono. Two independant mono channels */
-#define AOUT_CHAN_CHANNEL 0x0000000B
-#define AOUT_CHAN_MONO 0x00000001
-#define AOUT_CHAN_STEREO 0x00000002
-/* 3 front channels (left, center, right) */
-#define AOUT_CHAN_3F 0x00000003
-/* 2 front, 1 rear surround channels (L, R, S) */
-#define AOUT_CHAN_2F1R 0x00000004
-/* 3 front, 1 rear surround channels (L, C, R, S) */
-#define AOUT_CHAN_3F1R 0x00000005
-/* 2 front, 2 rear surround channels (L, R, LS, RS) */
-#define AOUT_CHAN_2F2R 0x00000006
-/* 3 front, 2 rear surround channels (L, C, R, LS, RS) */
-#define AOUT_CHAN_3F2R 0x00000007
-/* First of two mono channels */
-#define AOUT_CHAN_CHANNEL1 0x00000008
-/* Second of two mono channels */
-#define AOUT_CHAN_CHANNEL2 0x00000009
-/* Dolby surround compatible stereo */
-#define AOUT_CHAN_DOLBY 0x0000000A
-
-#define AOUT_CHAN_MASK 0x0000000F
-
-/* Low frequency effects channel. Normally used to connect a subwoofer.
- * Can be combined with any of the above channels. For example :
- * AOUT_CHAN_3F2R | AOUT_CHAN_LFE -> 3 front, 2 rear, 1 LFE (5.1) */
-#define AOUT_CHAN_LFE 0x00000010