6 copyright: Ushodaya Enterprises Limited
12 description: Pan an audio channel, adjust balance, or adjust fade.
13 notes: Only handles up to 6 channels. Needs more work balance for surround and other channel layouts.
18 The position of the audio relative to its neighbor channel. For example,
19 when channel is set to 0 for left, then start 0 is full left, 0.5 is
20 center, and 1.0 is full right.
30 The ending value of the audio position. It will be interpolated from
31 start to end over the in-out range.
41 For stereo: 0 for front left, 1 for front right, -1 for front balance.
42 For quad: 2 for back left, 3 for back right, -2 for rear balance,
43 -3 for left fade, -4 for right fade.
51 Whether to gang together the front and back when using balance or to
52 gang together the left and right when using fade.