view src/com/aurellem/capture/Capture.java @ 73:877ae4b2993c tip

merge laptop changes.
author Robert McIntyre <rlm@mit.edu>
date Mon, 10 Mar 2014 18:58:08 -0400
parents dd97f65f940c
children
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1 package com.aurellem.capture;
3 import java.io.File;
4 import java.io.IOException;
5 import java.util.concurrent.Callable;
7 import com.aurellem.capture.audio.MultiListener;
8 import com.aurellem.capture.audio.WaveFileWriter;
9 import com.aurellem.capture.video.AVIVideoRecorder;
10 import com.aurellem.capture.video.AbstractVideoRecorder;
11 import com.aurellem.capture.video.FileVideoRecorder;
12 //import com.aurellem.capture.video.XuggleVideoRecorder;
13 import com.jme3.app.Application;
14 import com.jme3.audio.AudioRenderer;
15 import com.jme3.renderer.ViewPort;
16 import com.jme3.scene.Spatial;
17 import com.jme3.system.AppSettings;
18 import com.jme3.system.JmeSystem;
20 /**
21 * Use the methods in this class for capturing consistent,
22 * high quality video and audio from a jMonkeyEngine3
23 * application. To capture audio or video do the following:
24 *
25 * 1.) Set your application's timer to an IsoTimer. Create
26 * the IsoTimer with the desired video
27 * frames-per-second.
28 *
29 * 2.) Call captureAudio and/or captureVideo on the
30 * Application as desired before starting the
31 * Application.
32 *
33 * See the Basic and Advanced demos in the examples section
34 * for more information. If you have any trouble, please PM
35 * me on the jMonkeyEngine forums. My username is bortreb.
36 *
37 * @author Robert McIntyre
38 */
40 public class Capture {
42 /**
43 * Use this function to capture video from your
44 * application. You specify the framerate at which the
45 * video will be recording by setting the Application's
46 * timer to an IsoTimer created with the desired
47 * frames-per-second.
48 *
49 * There are three ways to record and they are selected
50 * by the properties of the file that you specify.
51 *
52 * 1.) (Preferred) If you supply an empty directory as
53 * the file, then the video will be saved as a
54 * sequence of .png files, one file per frame. The
55 * files start at 0000000.png and increment from
56 * there. You can then combine the frames into your
57 * preferred container/codec. If the directory is
58 * not empty, then writing video frames to it will
59 * fail, and nothing will be written.
60 *
61 * 2.) If the filename ends in ".avi" then the frames
62 * will be encoded as a RAW stream inside an AVI 1.0
63 * container. The resulting file will be quite
64 * large and you will probably want to re-encode it
65 * to your preferred container/codec format. Be
66 * advised that some video payers cannot process AVI
67 * with a RAW stream, and that AVI 1.0 files
68 * generated by this method that exceed 2.0GB are
69 * invalid according to the AVI 1.0 spec (but many
70 * programs can still deal with them.) Thanks to
71 * Werner Randelshofer for his excellent work which
72 * made AVI file writer option possible.
73 *
74 * 3.) Any non-directory file ending in anything other
75 * than ".avi" will be processed through Xuggle.
76 * Xuggle provides the option to use many
77 * codecs/containers, but you will have to install
78 * it on your system yourself in order to use this
79 * option. Please visit http://www.xuggle.com/ to
80 * learn how to do this.
81 *
82 * @param app The Application from which you wish to record Video.
83 * @param file The file to which the video will be captured.
84 * @throws IOException
85 */
87 public static void captureVideo
88 (final Application app, final File file) throws IOException{
89 final AbstractVideoRecorder videoRecorder;
91 if (file.getCanonicalPath().endsWith(".avi")){
92 videoRecorder = new AVIVideoRecorder(file);}
93 else {
94 videoRecorder = new FileVideoRecorder(file);}
95 //else {
96 //videoRecorder = new XuggleVideoRecorder(file);
97 //}
99 Callable<Object> thunk = new Callable<Object>(){
100 public Object call(){
102 ViewPort viewPort =
103 app.getRenderManager()
104 .createPostView("aurellem video record",
105 app.getCamera());
107 viewPort.setClearFlags(false, false, false);
109 // get GUI node stuff
110 for (Spatial s : app.getGuiViewPort().getScenes()){
111 viewPort.attachScene(s);
112 }
114 app.getStateManager().attach(videoRecorder);
115 viewPort.addProcessor(videoRecorder);
116 return null;
117 }
118 };
119 app.enqueue(thunk);
120 }
123 /**
124 * Use this function to capture audio from your
125 * application. Audio data will be saved in linear PCM
126 * format at 44,100 hertz in the wav container format to
127 * the file that you specify.
128 *
129 * Note that you *have* to use an IsoTimer for your
130 * Application's timer while recording audio or the
131 * recording will fail. Also ensure that your IsoTimer
132 * obeys the following constraints:
133 *
134 * 1.) The frames-per-second value of the IsoTimer
135 * cannot be lower than 10 frames-per-second.
136 *
137 * 2.) The frames-per-second value of the IsoTimer must
138 * evenly divide 44,100.
139 *
140 * @param app The Application from which you wish to
141 * record Audio.
142 * @param file the target file to which you want to
143 * record audio data.
144 * @throws IOException
145 */
147 public static void captureAudio
148 (final Application app, final File file) throws IOException{
149 AppSettings settings = null;
150 if (app.getContext() != null){
151 settings = app.getContext().getSettings();}
152 if (settings == null){settings = new AppSettings(true);}
153 settings.setAudioRenderer("Send");
154 app.setSettings(settings);
156 JmeSystem.setSystemDelegate(new AurellemSystemDelegate());
158 final WaveFileWriter writer = new WaveFileWriter(file);
160 Callable<Object> thunk = new Callable<Object>(){
161 public Object call(){
162 AudioRenderer ar = app.getAudioRenderer();
163 if (ar instanceof MultiListener){
164 MultiListener ml = (MultiListener)ar;
165 ml.registerSoundProcessor(writer);
166 }
167 return null;
168 }
169 };
170 app.enqueue(thunk);
171 }
172 }