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DRC: math: Replace exponential function for performance #8435

Merged
merged 5 commits into from
Jan 8, 2024
Merged

DRC: math: Replace exponential function for performance #8435

merged 5 commits into from
Jan 8, 2024

Commits on Jan 8, 2024

  1. Math: Exp: Rename and move common macros for generic and HiFi 

    The macros are moved to header file. There are no functional changes.

Signed-off-by: shastry <malladi.sastry@intel.com>
    @ShriramShastry
    ShriramShastry committed Jan 8, 2024
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  2. Math: Exp: Fix warning: incompatible pointer type initialization. 

    Unused variables from HiFi4/5 were reshuffled and placed in order
to use HiFi3 code. If the variable 'ret' is used uninitialized
whenever the 'if' condition is false, set it to false.

Signed-off-by: shastry <malladi.sastry@intel.com>
    @ShriramShastry
    ShriramShastry committed Jan 8, 2024
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  3. Math: Exp: Add functions sofm_exp_fixed and sofm_db2lin 

    This change allows the fast exponent library to replace
the decibels library for applications like DRC where exponent
function is used in hot code parts.

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
Signed-off-by: shastry <malladi.sastry@intel.com>
    @singalsu @ShriramShastry
    singalsu authored and ShriramShastry committed Jan 8, 2024
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  4. Zephyr: Patch Zephyr CMakeLists with exponential source files 

    In Zephyr CMakeLists, add exponential source files to facilitate
the compilation of math C and HiFi code.

Signed-off-by: shastry <malladi.sastry@intel.com>
    @singalsu @ShriramShastry
    singalsu authored and ShriramShastry committed Jan 8, 2024
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  5. Audio: DRC: Use fast exponent functions 

    The exp_fixed() function is replaced by fast sofm_exp_fixed()
and sofm_db2lin() functions. It saves 40 MCPS, from 123 to 83 MCPS
in a test run in TGL platform.

Signed-off-by: shastry <malladi.sastry@intel.com>
    @ShriramShastry
    ShriramShastry committed Jan 8, 2024
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