http://www.rosoo.net/a/201111/15259.html
将之前做過的一個比較實用的在android實時采集視訊，并在pc上顯示出采集到的視訊的程式，包括pc端和android端程式，基于android 1.5 在htc g3上測試通過。開發平台是android 1.5，這個程式實作視訊流的擷取，程式簡單地在第20幀到來的時候，寫入到檔案中。這樣就可以拿
tag: android 視訊采集
相關完整源碼可以從這裡下載下傳到：
http://bbs.rosoo.net/forum.php?mod=viewthread&tid=8669
2010-10-13晚上 更新～ 将之前做過的一個比較實用的在android實時采集視訊，并在pc上顯示出采集到的視訊的程式，包括pc端和android端程式，基于android 1.5
在htc g3上測試通過。代碼在分界線之後。
之前網上找了很多資料，沒有找到如何截取android視訊流。後來發現在android的拍照視訊預覽時就可以截取視訊資料。每獲得一幀就調用一下接口函數。
我的開發平台是android 1.5，這個程式實作視訊流的擷取，程式簡單地在第20幀到來的時候，寫入到檔案中。這樣就可以拿到電腦上進行分析。
具體請大家參考代碼
package com.sunshine;
import java.io.file;
import java.io.randomaccessfile;
import android.app.activity;
import android.content.res.configuration;
import android.graphics.pixelformat;
import android.hardware.camera;
import android.os.bundle;
import android.util.log;
import android.view.surfaceholder;
import android.view.surfaceview;
import android.view.window;
import android.view.windowmanager;
import android.view.surfaceholder.callback;
public class androidvideo extends activity implements callback,
camera.picturecallback {
private surfaceview msurfaceview = null;
private surfaceholder msurfaceholder = null;
private camera mcamera = null;
private boolean mpreviewrunning = false;
@override
public void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
getwindow().setformat(pixelformat.translucent);
requestwindowfeature(window.feature_no_title);
getwindow().setflags(windowmanager.layoutparams.flag_fullscreen,
windowmanager.layoutparams.flag_fullscreen);
setcontentview(r.layout.main);
msurfaceview = (surfaceview) this.findviewbyid(r.id.surface_camera);
msurfaceholder = msurfaceview.getholder();
msurfaceholder.addcallback(this);
msurfaceholder.settype(surfaceholder.surface_type_push_buffers);
}
public void onpicturetaken(byte[] data, camera camera) {
try {
log.v("system.out", "get it!");
file file = new file("/sdcard/camera.jpg");
randomaccessfile raf = new randomaccessfile(file, "rw");
raf.write(data);
raf.close();
} catch (exception ex) {
log.v("system.out", ex.tostring());
public void surfacechanged(surfaceholder holder, int format, int width,
int height) {
if (mpreviewrunning) {
mcamera.stoppreview();
camera.parameters p = mcamera.getparameters();
p.setpreviewsize(width, height);
mcamera.setpreviewcallback(new streamit());
mcamera.setparameters(p);
mcamera.setpreviewdisplay(holder);
mcamera.startpreview();
mpreviewrunning = true;
public void surfacecreated(surfaceholder holder) {
mcamera = camera.open();
public void surfacedestroyed(surfaceholder holder) {
mpreviewrunning = false;
mcamera.release();
public void onconfigurationchanged(configuration newconfig) {
super.onconfigurationchanged(newconfig);
if (this.getresources().getconfiguration().orientation == configuration.orientation_landscape) {
} else if (this.getresources().getconfiguration().orientation == configuration.orientation_portrait) {
class streamit implements camera.previewcallback {
private int tick = 1;
public void onpreviewframe(byte[] data, camera camera) {
// todo auto-generated method stub
if (tick == 20) {
system.out.println("data len: " + data.length);
file file = new file("/sdcard/pal.pal");
if (!file.exists())
file.createnewfile();
tick++;
xml 布局檔案
<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="vertical">
<surfaceview android:id="@+id/surface_camera"
android:layout_width="fill_parent" android:layout_height="fill_parent">
</surfaceview>
</linearlayout>
注意在項目配置檔案中還要加上通路權限
<uses-permission android:name="android.permission.camera" />
通過查資料發現，android每幀的資料流的格式是yuv420
下面附上一個将 yuv420轉成rgb的函數，
staticpublicvoiddecodeyuv420sp(byte[]
rgbbuf,byte[] yuv420sp,intwidth,intheight)
{
finalintframesize
= width * height;
if(rgbbuf
==null)
thrownewnullpointerexception("buffer
'rgbbuf' is null");
if(rgbbuf.length
< framesize *3)
thrownewillegalargumentexception("buffer
'rgbbuf' size "
+ rgbbuf.length +" < minimum "+
framesize *3);
if(yuv420sp
'yuv420sp' is null");
if(yuv420sp.length
< framesize *3/2)
'yuv420sp' size "+ yuv420sp.length
+" < minimum "+
framesize *3/2);
inti
=0, y =0;
intuvp
=0, u =0,
v =0;
inty1192
=0, r =0,
g =0, b =0;
for(intj
=0, yp =0;
j < height; j++) {
uvp = framesize + (j >>1)
* width;
u =0;
v =0;
for(i
=0; i < width; i++, yp++) {
y = (0xff&
((int) yuv420sp[yp])) -16;
if(y
<0) y =0;
if((i
&1) ==0)
v = (0xff&
yuv420sp[uvp++]) -128;
u = (0xff&
}
y1192 =1192*
y;
r = (y1192 +1634*
v);
g = (y1192 -833*
v -400* u);
b = (y1192 +2066*
u);
if(r
<0) r =0;elseif(r
>262143) r =262143;
if(g
<0) g =0;elseif(g
>262143) g =262143;
if(b
<0) b =0;elseif(b
>262143) b =262143;
rgbbuf[yp *3]
= (byte)(r >>10);
rgbbuf[yp *3+1]
= (byte)(g >>10);
rgbbuf[yp *3+2]
= (byte)(b >>10);
}
}
}
代碼來自http://chenweihuacwh.javaeye.com/blog/571223
感謝cwh643
-----------------------------分界線-------------------------------------------
-----------------------------2010-10-13更新-------------------------------
android 端
import java.io.datainputstream;
import java.io.dataoutputstream;
import java.net.socket;
import android.view.view;
import android.view.view.onclicklistener;
import android.widget.button;
import android.widget.edittext;
public class androidvideo extends activity implements callback,onclicklistener{
//連接配接相關
private edittext remoteip=null;
private button connect=null;
private string remoteipstr=null;
//視訊資料
private streamit streamit=null;
public static kit kit=null;
getwindow().setformat(pixelformat.translucent);
setcontentview(r.layout.main);
msurfaceview = (surfaceview) this.findviewbyid(r.id.surface_camera);
remoteip=(edittext)this.findviewbyid(r.id.remoteip);
connect=(button)this.findviewbyid(r.id.connect);
connect.setonclicklistener(this);
streamit=new streamit();
kit=new kit();
mcamera.setpreviewcallback(streamit);
class kit implements runnable {
private boolean run=true;
// private final int datalen=57600; //307200 or 230400 76800 or 57600
private final int tt=28800;
public void run() {
socket socket = new socket(remoteipstr, 8899);
dataoutputstream dos = new dataoutputstream(socket
.getoutputstream());
datainputstream dis = new datainputstream(socket
.getinputstream());
while (run) {
dos.write(streamit.yuv420sp, 0, 28800);
dos.write(streamit.yuv420sp, 28800, 28800);
dis.readboolean();
thread.sleep(155);
run=false;
ex.printstacktrace();
public void onclick(view view) {
if(view==connect){//連接配接函數
remoteipstr=remoteip.gettext().tostring();
new thread(androidvideo.kit).start();
public byte[] yuv420sp =null;
private boolean t=true;
// if(t){
// t=false;
// new thread(androidvideo.kit).start();
// }
yuv420sp=data;
pc端
import java.awt.frame;
import java.awt.graphics;
import java.awt.point;
import java.awt.transparency;
import java.awt.color.colorspace;
import java.awt.image.bufferedimage;
import java.awt.image.componentcolormodel;
import java.awt.image.databuffer;
import java.awt.image.databufferbyte;
import java.awt.image.pixelinterleavedsamplemodel;
import java.awt.image.raster;
import java.awt.image.samplemodel;
import java.awt.image.writableraster;
import java.net.serversocket;
public class flushme extends frame {
private static final long serialversionuid = 1l;
private bufferedimage im;
// 圖像資訊
// private final int width = 480;
// private final int height = 320;
private static final int width = 240;
private static final int height = 160;
private static final int numbands = 3;
private static final int datalen = 57600;//307200 or 230400//57600 76800
private static final int tt = 28800;//14400;//28800;
// 圖像數組
private byte[] bytearray = new byte[width * height * numbands];// 圖像rgb數組
private byte[] yuv420sp = new byte[datalen];// 圖像yuv數組
private static final int[] bandoffsets = new int[] { 0, 1, 2 };
private static final samplemodel samplemodel = new pixelinterleavedsamplemodel(
databuffer.type_byte, width, height, 3, width * 3,
bandoffsets);
// colormodel
private static final colorspace cs=colorspace.getinstance(colorspace.cs_srgb);
private static final componentcolormodel cm=new componentcolormodel(cs, false, false,
transparency.opaque, databuffer.type_byte);
public flushme() {
super("flushing");
updateim();
setsize(480, 320);
// 視窗關閉方法
this.addwindowlistener(new java.awt.event.windowadapter() {
public void windowclosing(java.awt.event.windowevent e) {
system.exit(0);
});
// 視窗居中
this.setlocationrelativeto(null);
this.setresizable(false);
this.setvisible(true);
this.getdata();
public void update(graphics g){
paint(g);
public void paint(graphics g) {
g.drawimage(im, 0, 0, 480, 320, this);
public void getdata() {
serversocket server = new serversocket(8899);
socket socket = server.accept();
datainputstream dis = new datainputstream(socket.getinputstream());
dataoutputstream dos = new dataoutputstream(socket.getoutputstream());
while (true) {
for (int i = 0; i < datalen / tt; i++) {
dis.read(yuv420sp, i * tt, tt);
// 得到資料之後立即更新顯示
im.flush();
repaint();
dos.writeboolean(true);
private void updateim() {
// 解析yuv成rgb格式
decodeyuv420sp(bytearray, yuv420sp, width, height);
databuffer databuffer = new databufferbyte(bytearray, numbands);
writableraster wr = raster.createwritableraster(samplemodel,
databuffer, new point(0, 0));
im = new bufferedimage(cm, wr, false, null);
private static void decodeyuv420sp(byte[] rgbbuf, byte[] yuv420sp,
int width, int height) {
final int framesize = width * height;
if (rgbbuf == null)
throw new nullpointerexception("buffer 'rgbbuf' is null");
if (rgbbuf.length < framesize * 3)
throw new illegalargumentexception("buffer 'rgbbuf' size "
+ rgbbuf.length + " < minimum " + framesize * 3);
if (yuv420sp == null)
throw new nullpointerexception("buffer 'yuv420sp' is null");
if (yuv420sp.length < framesize * 3 / 2)
throw new illegalargumentexception("buffer 'yuv420sp' size "
+ yuv420sp.length + " < minimum " + framesize * 3 / 2);
int i = 0, y = 0;
int uvp = 0, u = 0, v = 0;
int y1192 = 0, r = 0, g = 0, b = 0;
for (int j = 0, yp = 0; j < height; j++) {
uvp = framesize + (j >> 1) * width;
u = 0;
v = 0;
for (i = 0; i < width; i++, yp++) {
y = (0xff & ((int) yuv420sp[yp])) - 16;
if (y < 0)
y = 0;
if ((i & 1) == 0) {
v = (0xff & yuv420sp[uvp++]) - 128;
u = (0xff & yuv420sp[uvp++]) - 128;
y1192 = 1192 * y;
r = (y1192 + 1634 * v);
g = (y1192 - 833 * v - 400 * u);
b = (y1192 + 2066 * u);
if (r < 0)
r = 0;
else if (r > 262143)
r = 262143;
if (g < 0)
g = 0;
else if (g > 262143)
g = 262143;
if (b < 0)
b = 0;
else if (b > 262143)
b = 262143;
rgbbuf[yp * 3] = (byte) (r >> 10);
rgbbuf[yp * 3 + 1] = (byte) (g >> 10);
rgbbuf[yp * 3 + 2] = (byte) (b >> 10);
public static void main(string[] args) {
frame f = new flushme();
上個截圖
(sundos)