Method process

src/core/Resampler.cpp:19–49

Resampler::~Resampler() = default;

QByteArray Resampler::process(const float* in, int numSamples)
{
    if (numSamples <= 0) return {};

    // r8b does not bounds-check against aMaxInLen; exceeding it silently
    // overflows internal filter buffers. Chunk so each call stays within limit.
    if (numSamples > m_maxBlockSamples) {
        QByteArray result;
        for (int offset = 0; offset < numSamples; offset += m_maxBlockSamples)
            result.append(process(in + offset, std::min(numSamples - offset, m_maxBlockSamples)));
        return result;
    }

    // Convert float32 → double
    m_inBuf.resize(numSamples);
    for (int i = 0; i < numSamples; ++i)
        m_inBuf[i] = static_cast<double>(in[i]);

    // Resample
    double* outPtr = nullptr;
    int outLen = m_resampler->process(m_inBuf.data(), numSamples, outPtr);

    if (outLen <= 0 || !outPtr) return {};

    // Convert double → float32
    QByteArray result(outLen * static_cast<int>(sizeof(float)), Qt::Uninitialized);
    auto* dst = reinterpret_cast<float*>(result.data());
    for (int i = 0; i < outLen; ++i)
        dst[i] = static_cast<float>(outPtr[i]);
    return result;
}

QByteArray Resampler::processStereoToMono(const float* stereoIn, int numStereoFrames)
{