C++ (Cpp) ofPixelsRef::allocate示例

示例#1

文件： ofxAcv.cpp 项目： katotetsuro/ofxAcv

void ofxAcv::apply(const ofPixelsRef src, ofPixelsRef dst) {
    if (src.getWidth() != dst.getWidth()
        || src.getHeight() != dst.getHeight()
        || src.getNumChannels() != dst.getNumChannels()) {
        ofLogNotice() << "reallocating dst";
        dst.allocate(src.getWidth(), src.getHeight(), src.getNumChannels());
    }
    int w = src.getWidth();
    int h = src.getHeight();
    int ch = src.getNumChannels();
    assert(ch <= curves.size());
    unsigned char* srcPixels = src.getPixels();
    unsigned char* dstPixels = dst.getPixels();
    
    for (int y=0; y<h; ++y) {
        for (int x=0; x<w; ++x) {
            for (int c=0; c<ch; ++c) {
                int idx = (y * w + x) * ch + c;
                dstPixels[idx] = curves[c][srcPixels[idx]];
            }
        }
    }
}