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Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Double does not have enough precision to represent all int64 numbers
exactly.

Signed-off-by: Martin Storsjö <martin@martin.st>

Provides an option to disable mix level normalization
Signed-off-by: Diego Biurrun <diego@biurrun.de>

nasm prints a warning if the colon is missing.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Adds some validation for changing parameters after setting the matrix and
fixes a bug in the conversion path setup.

Removes a false dependency on existing contents of the 2nd dst register,
giving better performance for OOE.

Adds optimized functions for mixing 3 through 8 input channels to 1 and 2
output channels in fltp or s16p format with flt coeffs.

Based partially on implementation by Michael Niedermayer <michaelni@gmx.at> in
libswresample in FFmpeg. See commits:
7f1ae79d
24ab1abf

Also make this the default value.

Changed to match the number of parameters in conv_func_interleave(), which is
how they are called. The change isn't strictly necessary because the 4th
parameter is not used, but the code is clearer if they match.