Mercurial > jmeCapture

annotate src/com/aurellem/capture/video/AbstractVideoRecorder.java @ 40:56dc950feaed

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added README
author Robert McIntyre <rlm@mit.edu>
date Thu, 03 Nov 2011 16:39:32 -0700
parents 784a3f4e6202
children 6a1b28f060e6
rev   line source
rlm@9 1 package com.aurellem.capture.video;
rlm@9 2
rlm@9 3 import java.awt.image.BufferedImage;
rlm@9 4 import java.io.File;
rlm@9 5 import java.io.IOException;
rlm@9 6 import java.nio.ByteBuffer;
rlm@9 7
rlm@9 8 import com.aurellem.capture.IsoTimer;
rlm@9 9 import com.jme3.app.Application;
rlm@9 10 import com.jme3.app.state.AppState;
rlm@9 11 import com.jme3.app.state.AppStateManager;
rlm@9 12 import com.jme3.post.SceneProcessor;
rlm@9 13 import com.jme3.renderer.Camera;
rlm@9 14 import com.jme3.renderer.RenderManager;
rlm@9 15 import com.jme3.renderer.ViewPort;
rlm@9 16 import com.jme3.renderer.queue.RenderQueue;
rlm@9 17 import com.jme3.texture.FrameBuffer;
rlm@9 18 import com.jme3.util.BufferUtils;
rlm@9 19 import com.jme3.util.Screenshots;
rlm@9 20
rlm@9 21 /**
rlm@39 22 * <code>VideoRecorder</code> copies the frames it receives to video.
rlm@9 23 * To ensure smooth video at a constant framerate, you should set your
rlm@39 24 * application's timer to a new <code>IsoTimer</code>. This class will
rlm@9 25 * auto-determine the framerate of the video based on the time difference
rlm@9 26 * between the first two frames it receives, although you can manually set
rlm@9 27 * the framerate by calling <code>setFps(newFramerate)</code>. Be sure to
rlm@9 28 * place this processor *after* any other processors whose effects you want
rlm@9 29 * to be included in the output video. You can attach multiple
rlm@9 30 * <code>VideoProcessor</code>s to the same <code>ViewPort</code>.
rlm@9 31 *
rlm@9 32 * For example,
rlm@9 33 * <code>
rlm@9 34 * someViewPort.addProcessor(new VideoProcessor(file1));
rlm@9 35 * someViewPort.addProcessor(someShadowRenderer);
rlm@9 36 * someViewPort.addProcessor(new VideoProcessor(file2));
rlm@9 37 * </code>
rlm@9 38 *
rlm@9 39 * will output a video without shadows to <code>file1</code> and a video
rlm@9 40 * with shadows to <code>file2</code>
rlm@9 41 *
rlm@9 42 * @author Robert McIntyre
rlm@9 43 *
rlm@9 44 */
rlm@9 45
rlm@9 46 public abstract class AbstractVideoRecorder
rlm@39 47 implements SceneProcessor, VideoRecorder, AppState{
rlm@9 48
rlm@9 49 final File output;
rlm@9 50 Camera camera;
rlm@9 51 int width;
rlm@9 52 int height;
rlm@9 53 String targetFileName;
rlm@9 54 FrameBuffer frameBuffer;
rlm@9 55 Double fps = null;
rlm@9 56 RenderManager renderManager;
rlm@9 57 ByteBuffer byteBuffer;
rlm@9 58 BufferedImage rawFrame;
rlm@9 59 boolean isInitilized = false;
rlm@9 60 boolean paused = false;
rlm@9 61
rlm@9 62 public AbstractVideoRecorder(File output) throws IOException {
rlm@9 63 this.output = output;
rlm@9 64 this.targetFileName = this.output.getCanonicalPath();
rlm@9 65 }
rlm@9 66
rlm@9 67
rlm@9 68 public double getFps() {return this.fps;}
rlm@9 69
rlm@9 70 public AbstractVideoRecorder setFps(double fps) {
rlm@9 71 this.fps = fps;
rlm@9 72 return this;
rlm@9 73 }
rlm@9 74
rlm@9 75 public void initialize(RenderManager rm, ViewPort viewPort) {
rlm@9 76 Camera camera = viewPort.getCamera();
rlm@9 77 this.width = camera.getWidth();
rlm@9 78 this.height = camera.getHeight();
rlm@9 79
rlm@9 80 rawFrame = new BufferedImage(width, height,
rlm@9 81 BufferedImage.TYPE_4BYTE_ABGR);
rlm@9 82 byteBuffer = BufferUtils.createByteBuffer(width * height * 4 );
rlm@9 83 this.renderManager = rm;
rlm@9 84 this.isInitilized = true;
rlm@9 85 }
rlm@9 86
rlm@9 87 public void reshape(ViewPort vp, int w, int h) {}
rlm@9 88
rlm@9 89 public boolean isInitialized() {return this.isInitilized;}
rlm@9 90
rlm@9 91 public void preFrame(float tpf) {
rlm@9 92 if (null == this.fps){
rlm@9 93 this.setFps(1.0 / tpf);}
rlm@9 94 }
rlm@9 95
rlm@9 96 public void postQueue(RenderQueue rq) {}
rlm@9 97
rlm@9 98 public void postFrame(FrameBuffer out) {
rlm@9 99 if (!this.paused){
rlm@9 100 byteBuffer.clear();
rlm@9 101 renderManager.getRenderer().readFrameBuffer(out, byteBuffer);
rlm@9 102 Screenshots.convertScreenShot(byteBuffer, rawFrame);
rlm@9 103 record(rawFrame);
rlm@9 104 }
rlm@9 105 }
rlm@9 106
rlm@9 107 public void cleanup(){
rlm@9 108 this.pause();
rlm@9 109 this.finish();
rlm@9 110 };
rlm@9 111
rlm@9 112 public void pause(){
rlm@9 113 this.paused = true;
rlm@9 114 }
rlm@9 115
rlm@9 116 public void start(){
rlm@9 117 this.paused = false;
rlm@9 118 }
rlm@9 119
rlm@9 120 // methods from AppState
rlm@9 121 public void initialize(AppStateManager stateManager, Application app) {}
rlm@9 122
rlm@9 123 public void setEnabled(boolean active) {
rlm@9 124 if (active) {this.start();}
rlm@9 125 else {this.pause();}
rlm@9 126 }
rlm@9 127
rlm@9 128 public boolean isEnabled() {
rlm@9 129 return this.paused;
rlm@9 130 }
rlm@9 131
rlm@9 132 public void stateAttached(AppStateManager stateManager) {}
rlm@9 133
rlm@9 134
rlm@9 135 public void stateDetached(AppStateManager stateManager) {
rlm@9 136 this.pause();
rlm@9 137 this.finish();
rlm@9 138 }
rlm@9 139
rlm@9 140 public void update(float tpf) {}
rlm@9 141 public void render(RenderManager rm) {}
rlm@9 142 public void postRender() {}
rlm@9 143
rlm@9 144 }