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/*
ConsoleOutputViewController.swift
Nikhil Singh, Dr. Richard Boulanger
Adapted from the Csound iOS Examples by Steven Yi and Victor Lazzarini
This file is part of Csound iOS SwiftExamples.
The Csound for iOS Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Csound is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA
*/
import UIKit
class ConsoleOutputViewController: BaseCsoundViewController {
@IBOutlet var renderButton: UIButton!
@IBOutlet var mTextView: UITextView!
var string: String?
var csdTable = UITableView()
fileprivate var csdArray: [String]?
fileprivate var csdPath: String?
private var folderPath: String?
private var csdListVC: UIViewController?
// This method is called by CsoundObj() to output console messages
@objc func messageCallback(_ infoObj: NSValue) {
var info = Message() // Create instance of Message (a C Struct)
infoObj.getValue(&info) // Store the infoObj value in Message
let message = UnsafeMutablePointer<Int8>.allocate(capacity: 1024) // Create an empty C-String
let va_ptr: CVaListPointer = CVaListPointer(_fromUnsafeMutablePointer: &(info.valist)) // Get reference to variable argument list
vsnprintf(message, 1024, info.format, va_ptr) // Store in our C-String
let output = String(cString: message) // Create String object with C-String
DispatchQueue.main.async { [unowned self] in
self.updateUIWithNewMessage(output) // Update UI on main thread
}
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
csdPath = folderPath?.appending((tableView.cellForRow(at: indexPath)?.textLabel?.text)!)
csdListVC?.dismiss(animated: true, completion: nil)
}
// MARK: IBActions
@IBAction func run(_ sender: UIButton) {
if sender.isSelected == false {
mTextView.text = ""
sender.isSelected = true
csound.stop()
csound = CsoundObj()
csound.setMessageCallback(#selector(messageCallback(_:)), withListener: self)
csound.add(self)
if csdPath != nil {
csound.play(csdPath)
}
} else {
csound.stop()
sender.isSelected = false
}
}
@IBAction func showCSDs(_ sender: UIButton) {
csdListVC = UIViewController()
csdListVC?.modalPresentationStyle = .popover
let popover = csdListVC?.popoverPresentationController
popover?.sourceView = sender
popover?.sourceRect = sender.bounds
csdListVC?.preferredContentSize = CGSize(width: 300, height: 600)
csdTable = UITableView(frame: CGRect(x: 0, y: 0, width: (csdListVC?.preferredContentSize.width)!, height:
(csdListVC?.preferredContentSize.height)!))
csdTable.delegate = self
csdTable.dataSource = self
csdListVC?.view.addSubview(csdTable)
popover?.delegate = self
if csdListVC != nil {
present(csdListVC!, animated: true, completion: nil)
}
}
@IBAction func showInfo(_ sender: UIButton) {
infoVC.preferredContentSize = CGSize(width: 300, height: 160)
infoText = "Renders, by default, a simple 5-second 'countdown' csd and publishes information to a virtual Csound console every second. Click the CSD button on the right to select a different csd file."
displayInfo(sender)
}
override func viewDidLoad() {
folderPath = Bundle.main.resourcePath?.appending("/csdStorage/")
if folderPath != nil {
do {
csdArray = try FileManager.default.contentsOfDirectory(atPath: folderPath!)
} catch {
print(error.localizedDescription)
}
}
csdPath = Bundle.main.path(forResource: "TextOnly - Countdown", ofType: "csd", inDirectory: "csdStorage")
super.viewDidLoad()
}
func updateUIWithNewMessage(_ newMessage: String) {
mTextView.insertText(newMessage)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
extension ConsoleOutputViewController: CsoundObjListener {
func csoundObjCompleted(_ csoundObj: CsoundObj!) {
DispatchQueue.main.async { [unowned self] in
self.renderButton.isSelected = false
}
}
}
// MARK: TableView delegate/data source methods
extension ConsoleOutputViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if csdArray != nil {
return csdArray!.count
} else {
return 0
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
tableView.dequeueReusableCell(withIdentifier: "Cell")
let cell = UITableViewCell(style: .default, reuseIdentifier: "Cell")
if csdArray != nil {
cell.textLabel?.text = csdArray?[indexPath.row]
}
return cell
}
}
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