Ham Radio Blog
あなたは、常に”192.168.43.*”というIPアドレスを受け取るようです。
WifiStateMachine.java
if (ifcg != null) {
/* IP/netmask: 192.168.43.1/255.255.255.0 */
ifcg.setLinkAddress(new LinkAddress(
NetworkUtils.numericToInetAddress("192.168.43.1"), 24));
ifcg.setInterfaceUp();
mNwService.setInterfaceConfig(intf, ifcg);
}
Match 3 – Google DeepMind Challenge Match: Lee Sedol vs AlphaGo
Googleにとっては小さな一歩だが、Technological Singularityに向けての偉大な進歩。
http://www.nature.com/nature/journal/v529/n7587/abs/nature16961.html?lang=en
OpenCVを使えば、画像のフィルタリングは簡単です。
#include <iostream>
#include <opencv2/opencv.hpp>
using namespace cv;
int main(int argc, char** argv )
{
Mat image;
image = imread("/Users/user1/Desktop/lena_std.tif", 1 );
namedWindow("OpenCV 0", WINDOW_AUTOSIZE );
imshow("OpenCV 0", image);
Mat gray_image;
cvtColor(image, gray_image, CV_BGR2GRAY);
namedWindow("OpenCV 1", WINDOW_AUTOSIZE );
imshow("OpenCV 1", gray_image);
Mat blur_image;
GaussianBlur(image, blur_image, Size(7, 7), 0, 0);
namedWindow("OpenCV 2", WINDOW_AUTOSIZE );
imshow("OpenCV 2", blur_image);
Mat edge_image;
Laplacian(image, edge_image, CV_8U, 3, 1.0, 0.0, BORDER_DEFAULT);
namedWindow("OpenCV 3", WINDOW_AUTOSIZE );
imshow("OpenCV 3", edge_image);
waitKey(0);
return 0;
}
画像を扱うまた別の方法。あなたは、CMakeを用いてOpenCVをソースからビルドすることができます。
https://github.com/Itseez/opencv/archive/3.1.0.zip
% unzip opencv-3.1.0.zip % cd opencv-3.1.0 % cmake . % make % sudo make install
// DisplayImage.cpp
#include <opencv2/opencv.hpp>
using namespace cv;
int main(int argc, char** argv )
{
Mat image;
image = imread( argv[1], 1 );
namedWindow("OpenCV", WINDOW_AUTOSIZE );
imshow("OpenCV", image);
Mat gray_image;
cvtColor(image, gray_image, CV_BGR2GRAY);
namedWindow("OpenCV 2", WINDOW_AUTOSIZE );
imshow("OpenCV 2", gray_image);
waitKey(0);
return 0;
}
% g++ -I/usr/local/include/opencv -I/usr/local/incluide/opencv2 -L/usr/local/lib -lopencv_core -lopencv_highgui -lopencv_imgproc -lopencv_imgcodecs DisplayImage.cpp
ボタン（play/pause）を２つと、スライダー（progress/volume）とを、追加しました。 Interface Builderを使うのに慣れてきたようです。
// AppDelegate.swift
import Cocoa
import AVFoundation
var player : AVAudioPlayer?
@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate, AVAudioPlayerDelegate {
@IBOutlet weak var window: NSWindow!
@IBOutlet weak var myCustomView: MyView!
@IBOutlet weak var sliderValue: NSSliderCell!
@IBOutlet weak var volumeValue: NSSlider!
@IBAction func playPushed(sender: AnyObject) {
player!.play()
}
@IBAction func pausePushed(sender: AnyObject) {
player!.pause()
}
@IBAction func sliderChanged(sender: AnyObject) {
player!.currentTime = NSTimeInterval(sliderValue.integerValue)
}
@IBAction func volumeChanged(sender: AnyObject) {
player!.volume = volumeValue.floatValue
}
func applicationDidFinishLaunching(aNotification: NSNotification) {
self.window.delegate = self
NSTimer.scheduledTimerWithTimeInterval(0.2, target: self, selector: "update", userInfo: nil, repeats: true)
let audioPath = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("test", ofType: "wav")!)
player = try! AVAudioPlayer(contentsOfURL: audioPath, fileTypeHint: nil)
player!.meteringEnabled = true
player!.numberOfLoops = -1
player!.prepareToPlay()
player!.delegate = self
player!.play()
sliderValue.maxValue = Double(player!.duration)
}
func update() {
sliderValue.integerValue = Int(player!.currentTime)
myCustomView.display()
}
}
// MyView.swift
import Cocoa
class MyView: NSView {
override func drawRect(dirtyRect: NSRect) {
super.drawRect(dirtyRect)
NSColor.grayColor().set()
NSRectFill(self.bounds)
let dur = player?.duration
let cur = player?.currentTime
if cur != nil && dur != nil {
for var ch: Int = 0; ch < 2; ch++ {
switch ch {
case 0: NSColor(red: 0.8, green: 1.0, blue: 0.4, alpha: 1.0).set()
case 1: NSColor(red: 0.2, green: 1.0, blue: 0.8, alpha: 1.0).set()
default: break
}
player?.updateMeters()
let ave = player?.averagePowerForChannel(ch)
if ave != nil {
let nbar = CGFloat (600.0 * (ave! + 160.0) / 160.0)
let y2 = CGFloat (10 + 35 * ch)
let rect2 = NSMakeRect(20, y2, nbar, 30)
NSRectFill(rect2)
}
NSColor(red: 1.0, green: 0.4, blue: 0.2, alpha: 1.0).set()
let peak = player?.peakPowerForChannel(ch)
if peak != nil {
let nbar = CGFloat (600.0 * (peak! + 160.0) / 160.0)
let y2 = CGFloat (10 + 35 * ch)
let rect2 = NSMakeRect(nbar, y2, 20, 30)
NSRectFill(rect2)
}
}
let font = NSFont.boldSystemFontOfSize(40)
let textFontAttributes = [
NSFontAttributeName: font,
NSForegroundColorAttributeName: NSColor.whiteColor()
]
let dd : Int = Int(dur!)
let cc : Int = Int(cur!)
let s:String = " duration: \(dd)sec, current: \(cc)sec"
s.drawInRect(self.bounds, withAttributes: textFontAttributes)
}
}
}
AVAudioPlayerにレベルメータを付けました。Swiftで書かれていますが、最適ではありません。
// AppDelegate.swift
import Cocoa
import AVFoundation
var player : AVAudioPlayer!
@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate, AVAudioPlayerDelegate {
@IBOutlet weak var window: NSWindow!
@IBOutlet weak var myCustomView: NSView!
func applicationDidFinishLaunching(aNotification: NSNotification) {
self.window.delegate = self
NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "update", userInfo: nil, repeats: true)
let audioPath = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("test", ofType: "wav")!)
player = try! AVAudioPlayer(contentsOfURL: audioPath, fileTypeHint: nil)
player.meteringEnabled = true
player.prepareToPlay()
player.play()
player.delegate = self
}
func update() {
myCustomView.display()
}
}
// MyView.swift
import Cocoa
class MyView: NSView {
override func drawRect(dirtyRect: NSRect) {
super.drawRect(dirtyRect)
NSColor.grayColor().set()
NSRectFill(self.bounds)
let rect4 = NSMakeRect (20, 80, 600, 10)
NSColor(red: 0.4, green: 0.4, blue: 0.8, alpha: 1.0).set();
NSRectFill(rect4)
let dur = player?.duration
let cur = player?.currentTime
if cur != nil && dur != nil {
let y3 = CGFloat( 600.0 * cur! / dur!)
let rect3 = NSMakeRect (20 + y3, 80, 10, 10)
NSColor(red: 1.0, green: 1.0, blue: 0.0, alpha: 1.0).set();
NSRectFill(rect3)
for var ch: Int = 0; ch < 2; ch++ {
switch ch {
case 0: NSColor(red: 0.8, green: 1.0, blue: 0.4, alpha: 1.0).set()
case 1: NSColor(red: 0.4, green: 0.8, blue: 1.0, alpha: 1.0).set()
default: break
}
player?.updateMeters()
let ave = player?.averagePowerForChannel(ch)
if ave != nil {
let nbar = CGFloat (600.0 * (ave! + 160.0) / 160.0)
let y2 = CGFloat (10 + 35 * ch)
let rect2 = NSMakeRect(20, y2, nbar, 30)
NSRectFill(rect2)
}
}
let font = NSFont.boldSystemFontOfSize(40)
let textFontAttributes = [
NSFontAttributeName: font,
NSForegroundColorAttributeName: NSColor.whiteColor()
]
let dd : Int = Int(dur!)
let cc : Int = Int(cur!)
let s:String = " duration: \(dd)sec, current: \(cc)sec"
s.drawInRect(self.bounds, withAttributes: textFontAttributes)
}
}
}