void RenderScriptToolkit::histogramDot()

in renderscript-toolkit/src/main/cpp/Histogram.cpp [263:295]

• 32 lines of code
• 7 McCabe index (conditional complexity)

void RenderScriptToolkit::histogramDot(const uint8_t* in, int32_t* out, size_t sizeX, size_t sizeY,
                                       size_t vectorSize, const float* coefficients,
                                       const Restriction* restriction) {
#ifdef ANDROID_RENDERSCRIPT_TOOLKIT_VALIDATE
    if (!validRestriction(LOG_TAG, sizeX, sizeY, restriction)) {
        return;
    }
    if (vectorSize < 1 || vectorSize > 4) {
        ALOGE("The vectorSize should be between 1 and 4. %zu provided.", vectorSize);
        return;
    }
    if (coefficients != nullptr) {
        float sum = 0.0f;
        for (size_t i = 0; i < vectorSize; i++) {
            if (coefficients[i] < 0.0f) {
                ALOGE("histogramDot coefficients should not be negative. Coefficient %zu was %f.",
                      i, coefficients[i]);
                return;
            }
            sum += coefficients[i];
        }
        if (sum > 1.0f) {
            ALOGE("histogramDot coefficients should add to 1 or less. Their sum is %f.", sum);
            return;
        }
    }
#endif

    HistogramDotTask task(in, sizeX, sizeY, vectorSize, processor->getNumberOfThreads(),
                          coefficients, restriction);
    processor->doTask(&task);
    task.collateSums(out);
}