ref: 7d886dbab7dfae712d0e0cea9d77cd404af5cad4
dir: /src/pt2_downsample2x.h/
#pragma once #include <stdint.h> // reserved for main audio channel mixer, PAT2SMP and MOD2WAV void clearMixerDownsamplerStates(void); double decimate2x_L(double x0, double x1); double decimate2x_R(double x0, double x1); // -------------------------------------- // Warning: These can exceed -1.0 .. 1.0 because of undershoot/overshoot! void downsample2xFloat(float *buffer, uint32_t originalLength); void downsample2xDouble(double *buffer, uint32_t originalLength); // Warning: These are slow and use normalization to prevent clipping from undershoot/overshoot! bool downsample2x8Bit(int8_t *buffer, uint32_t originalLength); bool downsample2x8BitU(uint8_t *buffer, uint32_t originalLength); bool downsample2x16Bit(int16_t *buffer, uint32_t originalLength); bool downsample2x32Bit(int32_t *buffer, uint32_t originalLength);