auto FindBestFirstLevelDivisionForSquare(size_t blocks, bool allow_square_transform, size_t bx, size_t by, size_t cx, size_t cy, const ACSConfig& config, const float* cmap_factors, AcStrategyImage* ac_strategy, const float entropy_mul_JXK, const float entropy_mul_JXJ, float* entropy_estimate, float* block, float* scratch_space, uint32_t* quantized) -> void