【Processing入门】第九章:视频音频

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1.播放视频文件

/** * Loop.  *  * Shows how to load and play a QuickTime movie file.   * */import processing.video.*;Movie movie;void setup() {  size(640, 360);  background(0);  // Load and play the video in a loop  movie = new Movie(this, "transit.mov");  movie.loop();}void movieEvent(Movie m) {  m.read();}void draw() {  //if (movie.available() == true) {  //  movie.read();   //}  image(movie, 0, 0, width, height);}

2.实时视频输入

import processing.video.*;Capture video;void setup(){  size(320,240);  video=new Capture(this,320,240,15);}void draw(){  if(video.available())  {    video.read();  }  image(video,0,0);}

或者使用captureEvent()

import processing.video.*;Capture video;void setup(){  size(320,240);  video=new Capture(this,width,height,15);}void captureEvent(Capture myCapture){  myCapture.read();}void draw(){  image(video,0,0);}

3.音频

3.1 播放音频

import ddf.minim.spi.*;import ddf.minim.signals.*;import ddf.minim.*;import ddf.minim.analysis.*;import ddf.minim.ugens.*;import ddf.minim.effects.*;AudioPlayer player;Minim minim;void setup(){  size(300,300);  minim = new Minim(this);  player=minim.loadFile("1.mp3",1024);  player.play();}void draw(){  }void stop(){  player.close();  minim.stop();  super.stop();}

3.2 声音的可视化

import ddf.minim.spi.*;import ddf.minim.signals.*;import ddf.minim.*;import ddf.minim.analysis.*;import ddf.minim.ugens.*;import ddf.minim.effects.*;AudioPlayer player;Minim minim;void setup(){  size(512,400);  minim = new Minim(this);  player=minim.loadFile("1.mp3",1024);  player.play();}void draw(){  background(0);  stroke(255);    for(int i = 0;i<player.left.size()-1 ;i++)  {    strokeWeight(abs(player.left.get(i)*20));    line(i,150+player.left.get(i)*50,i+1,150+player.left.get(i+1)*50);    line(i,250+player.left.get(i)*50,i+1,250+player.left.get(i+1)*50);  }}void stop(){  player.close();  minim.stop();  super.stop();}

关键部分改为

  for(int i = 0;i<player.bufferSize()-1 ; i+=5)  {     line(i,150+player.left.get(i)*50,i+1,150+player.left.get(i+1)*50);     ellipse(i,150+player.left.get(i)*100,player.left.get(i)*6,player.left.get(i)*100);     ellipse(i,250+player.left.get(i)*100,player.left.get(i)*6,player.left.get(i)*100);  }

3.3音频输入互动

import ddf.minim.spi.*;import ddf.minim.signals.*;import ddf.minim.*;import ddf.minim.analysis.*;import ddf.minim.ugens.*;import ddf.minim.effects.*;Minim minim;AudioInput in;void setup(){  size(1024,400);  smooth();   minim = new Minim(this);   minim.debugOn();   in = minim.getLineIn(Minim.STEREO,1024);   background(0);   }void draw(){  fill(0,5);  rect(0,0,width,height);  noStroke();  for(int i = 0;i<in.bufferSize()-1 ; i+=8)  {     fill(abs(in.left.get(i)*255),255,0);     ellipse(i,120+in.left.get(i)*100,in.left.get(i)*6,in.left.get(i)*100);     fill(abs(in.left.get(i)*255),255,0);     ellipse(i,280+in.right.get(i)*100,in.right.get(i)*6,in.right.get(i)*100);  } }void stop(){  in.close();  minim.stop();  super.stop();}

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