Calculate a 'balance' value for the specified volume with the
* specified channel map. The return value will range from -1.0f
* (left) to +1.0f (right). If no balance value is applicable to this
* channel map the return value will always be 0.0f. See
* pa_channel_map_can_balance(). \since 0.9.15
Calculate a 'balance' value for the specified volume with the * specified channel map. The return value will range from -1.0f * (left) to +1.0f (right). If no balance value is applicable to this * channel map the return value will always be 0.0f. See * pa_channel_map_can_balance(). \since 0.9.15