Method sampleCount

tools/imageio/formatdesc.h:581–583

        return basic.bytesPlane0;
    }
    uint32_t sampleCount() const noexcept {
        return static_cast<uint32_t>(samples.size());
    }
    uint32_t sampleBitLength(uint32_t s) const noexcept {
        return samples[s].bitLength + 1;
    }