nanako 886b6843e6 Add SIMD audio processing interface and implementations ...

- Created a new SIMD interface header and source files for audio processing functions.
- Implemented functions for filling buffers, mixing audio, applying gain, calculating RMS and peak values, normalizing audio, converting stereo to mono, limiting audio, fading audio, and a simple equalizer.
- Added SSE-specific implementations for the audio processing functions to leverage SIMD for performance improvements.
- Updated CMakeLists.txt files to include new libraries and link dependencies for the SIMD interface and SSE implementations.
- Introduced a static test helper library for unit testing with Google Test framework.

2025-11-14 23:27:55 +08:00

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