bilinear_expansion.h

 
 
#pragma once
 
#include <stdint.h>
 
#include "crgb.h"
#include "namespace.h"
#include "xymap.h"
 
 
FASTLED_NAMESPACE_BEGIN
 
void bilinearExpandArbitrary(const CRGB *input, CRGB *output,
                             uint16_t inputWidth, uint16_t inputHeight,
                             XYMap xyMap);
 
void bilinearExpandPowerOf2(const CRGB *input, CRGB *output, uint8_t inputWidth, uint8_t inputHeight, XYMap xyMap);
 
// 
inline void bilinearExpand(const CRGB *input, CRGB *output, uint16_t inputWidth,
                           uint16_t inputHeight, XYMap xyMap) {
    uint16_t outputWidth = xyMap.getWidth();
    uint16_t outputHeight = xyMap.getHeight();
    const bool wontFit = (outputWidth != xyMap.getWidth() || outputHeight != xyMap.getHeight());
    // if the input dimensions are not a power of 2 then we can't use the
    // optimized version.
    if (wontFit || (inputWidth & (inputWidth - 1)) || (inputHeight & (inputHeight - 1))) {
        bilinearExpandArbitrary(input, output, inputWidth, inputHeight, xyMap);
    } else {
        bilinearExpandPowerOf2(input, output, inputWidth, inputHeight, xyMap);
    }
}
 
void bilinearExpandFloat(const CRGB *input, CRGB *output,
                                 uint8_t inputWidth, uint8_t inputHeight,
                                 XYMap xyMap);
 
FASTLED_NAMESPACE_END