tpt_scale_u8.c File Reference

#include "tpt_math.h"

Include dependency graph for tpt_scale_u8.c:

Functions
static uint32_t	sat_u32_to_u8 (q31_t src)
	To multiply a u8 vectors by a q7 scale. More...
void	tpt_scale_u8 (uint8_t *__restrict aOutData, const uint8_t *__restrict aInData, q7_t aScaleFract, int8_t aShift, uint32_t aCount)
	To multiply a u8 vectors by a q7 scale. More...

Function Documentation

sat_u32_to_u8()

static uint32_t sat_u32_to_u8 ( q31_t  src )

inlinestatic

To multiply a u8 vectors by a q7 scale.

Parameters

[out]	aOutData	points to the output vector
[in]	aInData	points to the input vector
[in]	aScaleFract	fractional portion of the scale value
[in]	aShift	number of bits to shift
[in]	aCount	number of samples in the vector

Returns

none

The inputs are multiplied to yield a 1.15 output and then are

shift with saturation to 8-bit formats.