Check if mix is in passthrough.
Only N x N mix identity matrices are considered passthrough, this is determined by comparing the contents of the matrix with 0.0 and 1.0.
As this is floating point comparisons, if the values have been generated, they should be rounded up or down by explicit assignment of 0.0 or 1.0 to values within a user-defined epsilon, this code doesn't make assumptions as to what may constitute an appropriate epsilon.
In case the samples are interleaved, in and out must point to an
array with a single element pointing to a block of interleaved samples.
If non-interleaved samples are used, in and out must point to an
array with pointers to memory blocks, one for each channel.
Perform channel mixing on in_data and write the result to out_data.
in_data and out_data need to be in format and layout.
input samples
output samples
number of samples
Free memory allocated by
mix.