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USB摄像头视频相关ffmpeg,rtp,mjpg-streamer

2012-09-04 10:48 483 查看
USB摄像头视频相关ffmpeg,rtp,mjpg-streamer

一个哥们的思路，不错，值得参考：http://blog.csdn.net/sg131971/article/details/6932237

但觉得移植apche太大了，lite http比较适合。

Android + Mini2440 无线网络视频监控系统（五）Android客户端程序

http://blog.csdn.net/sg131971/article/details/6932742

Mini2440Activity.java

[java]
view plaincopyprint?

package sg131971.mini2440;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Handler;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;

public class Mini2440Activity extends Activity {

private static int Connect_flag = 0;
private static int AutoRefresh_flag = 0;
private static int LED_flag[] = new int[4];

private Bitmap m_Bitmap;
private ImageView myImageView;
private Handler m_Handler = new Handler();

private String Board_IP;

private EditText myEditText;
private Button myButtonConnect;
private Button myButton0;
private Button myButton1;
private Button myButton2;
private Button myButton3;
private Button myButtonStatus;
private Button autoButton;
private Button manualButton;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

myEditText = (EditText) findViewById(R.id.editText);
myButtonConnect = (Button) findViewById(R.id.myButtonConnect);
myButtonConnect.setOnClickListener(new ConnectListener());

myImageView = (ImageView) findViewById(R.id.imageView);

autoButton = (Button) findViewById(R.id.autoButton);
manualButton = (Button) findViewById(R.id.manualButton);

myButton0 = (Button) findViewById(R.id.myButton0);
myButton1 = (Button) findViewById(R.id.myButton1);
myButton2 = (Button) findViewById(R.id.myButton2);
myButton3 = (Button) findViewById(R.id.myButton3);
myButtonStatus = (Button) findViewById(R.id.myButtonStatus);

StopService();
}

public boolean onKeyDown(int keyCode, KeyEvent msg) {
if (keyCode == KeyEvent.KEYCODE_BACK)
{
finish();
System.exit(0);
}

return false;
}

private void StartService() {
// TODO Auto-generated method stub
m_Handler.postDelayed(m_RefreshImage, 0);

myButton0.setOnClickListener(new LED0Listener());
myButton1.setOnClickListener(new LED1Listener());
myButton2.setOnClickListener(new LED2Listener());
myButton3.setOnClickListener(new LED3Listener());
myButtonStatus.setOnClickListener(new StatusListener());

autoButton.setOnClickListener(new AutoRefresh());
manualButton.setOnClickListener(new ManualRefresh());
}

private void StopService() {
// TODO Auto-generated method stub
m_Handler.removeCallbacks(m_RefreshImage);
myImageView.setImageResource(R.drawable.first);

myButton0.setOnClickListener(new DefaultListener());
myButton1.setOnClickListener(new DefaultListener());
myButton2.setOnClickListener(new DefaultListener());
myButton3.setOnClickListener(new DefaultListener());
myButtonStatus.setOnClickListener(new DefaultListener());

autoButton.setOnClickListener(new DefaultListener());
manualButton.setOnClickListener(new DefaultListener());
}

public class ConnectListener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
Board_IP = myEditText.getText().toString();
if (Connect_flag == 0) {
Connect_flag = 1;
StartService();
myButtonConnect.setText("Disconnect");
showMessage("已连接：" + Board_IP);
} else {
Connect_flag = 0;
AutoRefresh_flag = 0;
StopService();
myButtonConnect.setText("Connect");
showMessage("已断开：" + Board_IP);
}
}

}

public class DefaultListener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
showMessage("请先连接ARM板！");
}

}

public class ManualRefresh implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
if (AutoRefresh_flag == 1)
AutoRefresh_flag = 0;
m_Handler.postDelayed(m_RefreshImage, 0);
showMessage("手动刷新成功！");
}

}

public class AutoRefresh implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
if (AutoRefresh_flag == 0)
AutoRefresh_flag = 1;
m_Handler.postDelayed(m_RefreshImage, 0);
showMessage("自动刷新设置成功！");
}

}

private Runnable m_RefreshImage = new Runnable() {
public void run() {
// TODO Auto-generated method stub
RefreshImage();
if (AutoRefresh_flag == 1)
m_Handler.postDelayed(m_RefreshImage, 100);
else
m_Handler.removeCallbacks(m_RefreshImage);
}

private void RefreshImage() {
// TODO Auto-generated method stub
try {
URL m_URL = new URL("http://" + Board_IP
+ ":8080/?action=snapshot");
URLConnection m_URL_Connection = m_URL.openConnection();
m_URL_Connection.connect();
InputStream m_InputStream = m_URL_Connection.getInputStream();
m_Bitmap = BitmapFactory.decodeStream(m_InputStream);
myImageView.setImageBitmap(m_Bitmap);
m_InputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};

public class LED0Listener implements OnClickListener {

public void onClick(View arg0) {
// TODO Auto-generated method stub
LED_flag[0]++;
if (LED_flag[0] % 2 == 1) {
HttpSendCmd("58400F01");
showMessage("LED0已打开！");
} else {
HttpSendCmd("58400F00");
showMessage("LED0已关闭！");
}
}
}

public class LED1Listener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
LED_flag[1]++;
if (LED_flag[1] % 2 == 1) {
HttpSendCmd("58401F01");
showMessage("LED1已打开！");
} else {
HttpSendCmd("58401F00");
showMessage("LED1已关闭！");
}
}

}

public class LED2Listener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
LED_flag[2]++;
if (LED_flag[2] % 2 == 1) {
HttpSendCmd("58402F01");
showMessage("LED2已打开！");
} else {
HttpSendCmd("58402F00");
showMessage("LED2已关闭！");
}
}
}

public class LED3Listener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
LED_flag[3]++;
if (LED_flag[3] % 2 == 1) {
HttpSendCmd("58403F01");
showMessage("LED3已打开！");
} else {
HttpSendCmd("58403F00");
showMessage("LED3已关闭！");
}
}

}

public class StatusListener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub

String display_info = "";

// 以后此处可以通过发送http请求查询硬件状态

HttpSendCmd("5840FFFF");

if (LED_flag[0] % 2 == 1)
display_info += "LED0:开";
else
display_info += "LED0:关";

display_info += " ";

if (LED_flag[1] % 2 == 1)
display_info += "LED1:开";
else
display_info += "LED1:关";

display_info += " ";

if (LED_flag[2] % 2 == 1)
display_info += "LED2:开";
else
display_info += "LED2:关";

display_info += " ";

if (LED_flag[3] % 2 == 1)
display_info += "LED3:开";
else
display_info += "LED3:关";

showMessage(display_info);
}

}

public void HttpSendCmd(String cmd) {

// TODO Auto-generated method stub
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://" + Board_IP
+ "/mjpg-streamer/post_data.php");

try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
nameValuePairs.add(new BasicNameValuePair("user", "root"));
nameValuePairs.add(new BasicNameValuePair("passwd", "shiguang"));
nameValuePairs.add(new BasicNameValuePair("para", cmd));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

HttpResponse response = httpclient.execute(httppost);
String tmpString = EntityUtils.toString(response.getEntity());
System.out.println(tmpString);

} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

public void showMessage(String str) {
Toast toast = Toast.makeText(this, str, Toast.LENGTH_SHORT);
toast.setGravity(Gravity.TOP, 0, 550);
toast.show();
}

}

package sg131971.mini2440;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Handler;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;

public class Mini2440Activity extends Activity {

private static int Connect_flag = 0;
private static int AutoRefresh_flag = 0;
private static int LED_flag[] = new int[4];

private Bitmap m_Bitmap;
private ImageView myImageView;
private Handler m_Handler = new Handler();

private String Board_IP;

private EditText myEditText;
private Button myButtonConnect;
private Button myButton0;
private Button myButton1;
private Button myButton2;
private Button myButton3;
private Button myButtonStatus;
private Button autoButton;
private Button manualButton;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

myEditText = (EditText) findViewById(R.id.editText);
myButtonConnect = (Button) findViewById(R.id.myButtonConnect);
myButtonConnect.setOnClickListener(new ConnectListener());

myImageView = (ImageView) findViewById(R.id.imageView);

autoButton = (Button) findViewById(R.id.autoButton);
manualButton = (Button) findViewById(R.id.manualButton);

myButton0 = (Button) findViewById(R.id.myButton0);
myButton1 = (Button) findViewById(R.id.myButton1);
myButton2 = (Button) findViewById(R.id.myButton2);
myButton3 = (Button) findViewById(R.id.myButton3);
myButtonStatus = (Button) findViewById(R.id.myButtonStatus);

StopService();
}

public boolean onKeyDown(int keyCode, KeyEvent msg) {
if (keyCode == KeyEvent.KEYCODE_BACK)
{
finish();
System.exit(0);
}

return false;
}

private void StartService() {
// TODO Auto-generated method stub
m_Handler.postDelayed(m_RefreshImage, 0);

myButton0.setOnClickListener(new LED0Listener());
myButton1.setOnClickListener(new LED1Listener());
myButton2.setOnClickListener(new LED2Listener());
myButton3.setOnClickListener(new LED3Listener());
myButtonStatus.setOnClickListener(new StatusListener());

autoButton.setOnClickListener(new AutoRefresh());
manualButton.setOnClickListener(new ManualRefresh());
}

private void StopService() {
// TODO Auto-generated method stub
m_Handler.removeCallbacks(m_RefreshImage);
myImageView.setImageResource(R.drawable.first);

myButton0.setOnClickListener(new DefaultListener());
myButton1.setOnClickListener(new DefaultListener());
myButton2.setOnClickListener(new DefaultListener());
myButton3.setOnClickListener(new DefaultListener());
myButtonStatus.setOnClickListener(new DefaultListener());

autoButton.setOnClickListener(new DefaultListener());
manualButton.setOnClickListener(new DefaultListener());
}

public class ConnectListener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
Board_IP = myEditText.getText().toString();
if (Connect_flag == 0) {
Connect_flag = 1;
StartService();
myButtonConnect.setText("Disconnect");
showMessage("已连接：" + Board_IP);
} else {
Connect_flag = 0;
AutoRefresh_flag = 0;
StopService();
myButtonConnect.setText("Connect");
showMessage("已断开：" + Board_IP);
}
}

}

public class DefaultListener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
showMessage("请先连接ARM板！");
}

}

public class ManualRefresh implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
if (AutoRefresh_flag == 1)
AutoRefresh_flag = 0;
m_Handler.postDelayed(m_RefreshImage, 0);
showMessage("手动刷新成功！");
}

}

public class AutoRefresh implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
if (AutoRefresh_flag == 0)
AutoRefresh_flag = 1;
m_Handler.postDelayed(m_RefreshImage, 0);
showMessage("自动刷新设置成功！");
}

}

private Runnable m_RefreshImage = new Runnable() {
public void run() {
// TODO Auto-generated method stub
RefreshImage();
if (AutoRefresh_flag == 1)
m_Handler.postDelayed(m_RefreshImage, 100);
else
m_Handler.removeCallbacks(m_RefreshImage);
}

private void RefreshImage() {
// TODO Auto-generated method stub
try {
URL m_URL = new URL("http://" + Board_IP
+ ":8080/?action=snapshot");
URLConnection m_URL_Connection = m_URL.openConnection();
m_URL_Connection.connect();
InputStream m_InputStream = m_URL_Connection.getInputStream();
m_Bitmap = BitmapFactory.decodeStream(m_InputStream);
myImageView.setImageBitmap(m_Bitmap);
m_InputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};

public class LED0Listener implements OnClickListener {

public void onClick(View arg0) {
// TODO Auto-generated method stub
LED_flag[0]++;
if (LED_flag[0] % 2 == 1) {
HttpSendCmd("58400F01");
showMessage("LED0已打开！");
} else {
HttpSendCmd("58400F00");
showMessage("LED0已关闭！");
}
}
}

public class LED1Listener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
LED_flag[1]++;
if (LED_flag[1] % 2 == 1) {
HttpSendCmd("58401F01");
showMessage("LED1已打开！");
} else {
HttpSendCmd("58401F00");
showMessage("LED1已关闭！");
}
}

}

public class LED2Listener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
LED_flag[2]++;
if (LED_flag[2] % 2 == 1) {
HttpSendCmd("58402F01");
showMessage("LED2已打开！");
} else {
HttpSendCmd("58402F00");
showMessage("LED2已关闭！");
}
}
}

public class LED3Listener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub
LED_flag[3]++;
if (LED_flag[3] % 2 == 1) {
HttpSendCmd("58403F01");
showMessage("LED3已打开！");
} else {
HttpSendCmd("58403F00");
showMessage("LED3已关闭！");
}
}

}

public class StatusListener implements OnClickListener {

public void onClick(View v) {
// TODO Auto-generated method stub

String display_info = "";

// 以后此处可以通过发送http请求查询硬件状态
HttpSendCmd("5840FFFF");

if (LED_flag[0] % 2 == 1)
display_info += "LED0:开";
else
display_info += "LED0:关";

display_info += "  ";

if (LED_flag[1] % 2 == 1)
display_info += "LED1:开";
else
display_info += "LED1:关";

display_info += "  ";

if (LED_flag[2] % 2 == 1)
display_info += "LED2:开";
else
display_info += "LED2:关";

display_info += "  ";

if (LED_flag[3] % 2 == 1)
display_info += "LED3:开";
else
display_info += "LED3:关";

showMessage(display_info);
}

}

public void HttpSendCmd(String cmd) {

// TODO Auto-generated method stub
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://" + Board_IP
+ "/mjpg-streamer/post_data.php");

try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
nameValuePairs.add(new BasicNameValuePair("user", "root"));
nameValuePairs.add(new BasicNameValuePair("passwd", "shiguang"));
nameValuePairs.add(new BasicNameValuePair("para", cmd));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

HttpResponse response = httpclient.execute(httppost);
String tmpString = EntityUtils.toString(response.getEntity());
System.out.println(tmpString);

} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

public void showMessage(String str) {
Toast toast = Toast.makeText(this, str, Toast.LENGTH_SHORT);
toast.setGravity(Gravity.TOP, 0, 550);
toast.show();
}

}

最终效果图：





/nfsroot/rootfs/usr/local/apache_arm/htdocs/mjpg-streamer/post_data.php

[php]
view plaincopyprint?

<?php @header("content-type:text/html; charset=utf-8"); error_reporting(E_ALL); set_time_limit(0); $user = $_REQUEST['user']; $passed = $_REQUEST['passwd']; $para = $_REQUEST['para']; $service_port = 9090; $address = "192.168.1.97"; $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); if ($socket < 0) { echo "socket_create() failed: reason: " . socket_strerror($socket) . "\n"; } $result = socket_connect($socket, $address, $service_port); if ($result < 0) { echo "socket_connect() failed: reason: " . socket_strerror($result) . "\n"; } $in = $user . $passed . $para; $result = socket_write($socket, $in, strlen($in)) ; if(!$result) { echo "socket_write() failed: reason: " . socket_strerror($socket) . "\n"; } /* while($out = socket_read($socket,256)) { echo $out; break; } */ socket_close($socket); ?>
<?php
@header("content-type:text/html; charset=utf-8");
error_reporting(E_ALL);
set_time_limit(0);

$user = $_REQUEST['user'];
$passed = $_REQUEST['passwd'];
$para = $_REQUEST['para'];

$service_port = 9090;
$address = "192.168.1.97";

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket < 0)
{
echo "socket_create() failed: reason: " . socket_strerror($socket) . "\n";
}

$result = socket_connect($socket, $address, $service_port);
if ($result < 0)
{
echo "socket_connect()  failed: reason: " . socket_strerror($result) . "\n";
}

$in = $user . $passed . $para;

$result = socket_write($socket, $in, strlen($in)) ;
if(!$result)
{
echo "socket_write() failed: reason: " . socket_strerror($socket) . "\n";
}
/*
while($out = socket_read($socket,256))
{
echo $out;
break;
}
*/
socket_close($socket);
?>
手机端控制测试：





OK!

现在，基本通路已经打通，剩下的就是简单的指令转换和设备控制了！

转一篇文章:/article/2021691.html

USB 设备，是我刚刚开始学习的，完全搞不懂，玩这个USB摄像头淘宝上买的杂牌子，我在xp 下测试了一下，只能保证芯片是芯片是ZC0301PL。 其它都未知。

现在开始正文：（ 博文来自CSDN Acanoe 的博客：http://blog.csdn.net/ACanoe

我的操作环境是、主机：xp + VMware ubuntu 10.10 。 开发板：OK6410 A板。 使用内核：Linux 2.6.36.2 。 使用软件： mjpg-streamer

1、配置内核支持 中微星的 ZC3XX 摄像头。

Device Drivers ->

Multimedia devices->

<*>video for linux

[*]video capture adapters->

[*]V4l USB devices ->

<*>USB video class (UVC)

[*] UVC input events device support

<*>GSPCA based webcams ->

<*>ZC3XX USB Camera Driver

配置好了以后编译内核，下载到开发板。

2、查看USB 摄像头接入开发板的打印信息，当然你的开发板首先需要先支持 USB-Host 。我的开发板串口打印信息是：

[root@FORLINX6410]# usb 1-1: new full speed USB device using s3c2410-ohci and ad

dress 4

usb 1-1: New USB device found, idVendor=0ac8, idProduct=301b

usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0

usb 1-1: Product: PC Camera

usb 1-1: Manufacturer: Vimicro Corp.

gspca: probing 0ac8:301b

zc3xx: probe sensor -> 000a

zc3xx: Find Sensor PB0330. Chip revision 0

input: zc3xx as /class/input/input2

gspca: video0 created

[root@FORLINX6410]#

释放 USB 摄像头 的打印信息是：

[root@FORLINX6410]# usb 1-1: USB disconnect, address 4

gspca: video0 disconnect

gspca: video0 released

[root@FORLINX6410]#

3、编译安装：mjpg-streamer

移植参考了百度文库的


基于TQ2440开发板的Linux-2.6.30.4的网络现， 下载地址为：


http://wenku.baidu.com/view/9c712cd950e2524de5187e76.html

主要步骤，自己总结为：
3.1 ： 下载 mjgp-streamer 源码包
http://mjpg-streamer.svn.sourceforge.net/viewvc/mjpg-streamer.tar.gz?view=tar

解压后进入 mjgp-streamer 目录 修改顶层 Makefile ，将 CC=gcc 修改为 CC=arm-linux-gcc。 或者直接使用 make CC=arm-linux-gcc 可以直接编译。
3.2 ： make 后在 mjpg-streamer 目录下会生成 *.so 和 mjpt-streamer 可执行文件 ,其中 input_uvc.so 和 output_http.so 是我们需要的测试文件

3.3 ： 测试准备，你可以直接将我们编译好的 mjpg-streamer 的整个目录 copy 到你的文件系统根目录下，也可以只copy mjpg-streamer , input_uvc.so
和 output_http.so 这三个文件。 不过我是将真个目录copy 到我的文件系统根目录下的。（我是用的是yaffs2 文件系统）。测试前先用网线联通你的主机
和 开发板，我是用虚拟机上的 火狐浏览器测试的。（使用viewer.exe 和 XP 下的IE 浏览器都不成功），要保证你的虚拟机能 ping 通你的开发板。

3.4 ：进入你的文件系统，进入你已经copy 好了的mjpg-streamer 目录，我mjpg-streamer 下的文件有：
[root@FORLINX6410]# ls

CHANGELOG mjpg-streamer plugins

LICENSE mjpg_streamer scripts

Makefile mjpg_streamer.c start.sh

README mjpg_streamer.h utils.c

TODO mjpg_streamer.o utils.h

input_file.so output_file.so utils.o

input_testpicture.so output_http.so www

input_uvc.so output_udp.so

[root@FORLINX6410]#

然后输入命令：
./mjpg_streamer -i "./input_uvc.so" -o "./output_http.so -w ./www"

输入完命令后我开发板串口的打印信息是：
MJPG Streamer Version: svn rev:

i: Using V4L2 device.: /dev/video0

i: Desired Resolution: 640 x 480

i: Frames Per Second.: 5

i: Format............: MJPEG

Adding control for Pan (relative)

UVCIOC_CTRL_ADD - Error: Invalid argument

Adding control for Tilt (relative)

UVCIOC_CTRL_ADD - Error: Invalid argument

Adding control for Pan Reset

UVCIOC_CTRL_ADD - Error: Invalid argument

Adding control for Tilt Reset

UVCIOC_CTRL_ADD - Error: Invalid argument

Adding control for Pan/tilt Reset

UVCIOC_CTRL_ADD - Error: Invalid argument

Adding control for Focus (absolute)

UVCIOC_CTRL_ADD - Error: Invalid argument

mapping control for Pan (relative)

UVCIOC_CTRL_MAP - Error: Invalid argument

mapping control for Tilt (relative)

UVCIOC_CTRL_MAP - Error: Invalid argument

mapping control for Pan Reset

UVCIOC_CTRL_MAP - Error: Invalid argument

mapping control for Tilt Reset

UVCIOC_CTRL_MAP - Error: Invalid argument

mapping control for Pan/tilt Reset

UVCIOC_CTRL_MAP - Error: Invalid argument

mapping control for Focus (absolute)

UVCIOC_CTRL_MAP - Error: Invalid argument

mapping control for LED1 Mode

UVCIOC_CTRL_MAP - Error: Invalid argument

mapping control for LED1 Frequency

UVCIOC_CTRL_MAP - Error: Invalid argument

mapping control for Disable video processing

UVCIOC_CTRL_MAP - Error: Invalid argument

mapping control for Raw bits per pixel

UVCIOC_CTRL_MAP - Error: Invalid argument

o: www-folder-path...: ./www/

o: HTTP TCP port.....: 8080

o: username:password.: disabled

o: commands..........: enabled

我这里显然有报错信息， 上次也是，这此我就没管它，然后进入ubuntu 虚拟机进行测试。
在火狐浏览器里面输入：
192.168.0.232：8080/?action=stream
就可以看到流畅的视频流了。
很想给大家上传我的视频截图，可是我学校用的网络客户端很垃圾，总是和 CSDN 有冲突，不能上传图片，也不能进个人主页。
呵呵：想看图的点这里：
http://hi.baidu.com/%D2%A1%D2%B7%B5%C4%B4%B0%C7%B0%D1%A9/album/linux%20uvc%20%C9%E3%CF%F1%CD%B7

哈：这是我用外网上传的图片：





mjpg-stream移植

一、环境

主机环境 ：ubuntu 10.10

目标机 ：FS2410(S3C2410)

主机工具链 ：gcc-4.4.5

交叉工具链 ：arm-none-linux-gnueabi-gcc-4.3.2

摄像头 ：ZC301

二、移植过程

1、配置内核是内核支持芯片为ZC301的摄像头

Make menuconfig

Device Drivers --->

<*> Multimedia support --->

<*> Video For Linux

[*] Enable Video For Linux API 1 (DEPRECATED) (NEW)

[*] Video capture adapters (NEW) --->

[*] V4L USB devices (NEW) --->

<*> USB Video Class (UVC)

[*] UVC input events device support (NEW)

<*> USB ZC0301[P] webcam support (DEPRECATED)

2、重新编译内核

make zImage

通过上面两个步骤就可以驱动我们的摄像头了。但是这个驱动是基于V4l2的。以前基于 V4L的一些上层应用就不能用了，或需要做大量的修改！这里我们要实现网络视频的功能，以前都是用servfox这个网络视频服务器，但是这个服务器就是 基于V4L的，我们如果想用的话就得对servfox的源码进行修改。这里我们选用另外一种方案mjpg-stream。

3、mjpg-stream的移植

关于mjpg-stream的资料大家可以在下面这个网址查看：http://sourceforge.net/apps/mediawiki/mjpg-streamer/index.php?title=Main_Page

mjpg-stream的移植需要jpeg的库，所以我们先移植jpeg的库

(1)jpeg库的移植

1)jpeg源码包通过下面这个网址下载
http://www.ijg.org/files/jpegsrc.v8b.tar.gz
2)解压源码包

tar xvf jpegsrc.v8b.tar.gz

3)配置源码

cd jpeg-8b

./configure --prefix=/home/linux/s3c2410-2.6.35/video/jpeg --host=arm-none-linux-gnueabi

4)编译

make

5)安装

make install

6)拷贝库到文件系统中

cp //home/linux/s3c2410-2.6.35/video/jpeg /lib/libjpeg.so.8 /source/rootfs/lib

(2)mjpg-stream的移植

1)mjpg-stream源码包通过下面这个网址下载
http://sourceforge.net/projects/mjpg-streamer/
2)解压源码

tar xvf mjpg-streamer-r63.tar.gz

3)修改源码

cd mjpg-streamer-r63

修改顶层makefile及plugins目录中的各级makefile将所有

CC=gcc

修改为

CC=arm-none-linux-gnueabi-gcc

修改plugins/input_uvc/Makfile

修改

CFLAGS += -O2 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC

为

CFLAGS += -O2 -DLINUX -D_GNU_SOURCE -Wall -shared -fPIC -I/home/linux/s3c2410-2.6.35/video/jpeg/include

修改

$(CC) $(CFLAGS) -ljpeg -o $@ input_uvc.c v4l2uvc.lo jpeg_utils.lo dynctrl.lo

为

$(CC) $(CFLAGS) -ljpeg -L/home/linux/s3c2410-2.6.35/video/jpeg/lib -o $@ input_uvc.c v4l2uvc.lo jpeg_utils.lo dynctrl.lo

jpeg_utils.c:27: fatal error: jpeglib.h: No such file or directory

4)编译

make

5)测试

mkdir /source/rootfs/mjpg

cp *.so /source/rootfs/mjpg

cp mjpg-stream /source/rootfs/bin

打开开开发板运行

mjpg_streamer -i "/mjpg/input_uvc.so" -o "/mjpg/output_http.so -w /www"

在源码目录下有start.sh,这个脚本里有一些mjpg-stream的使用方法及说明
打开一个网页输入下面地址就能够看到一个视频(开发板的IP为192.168.1.202)：
http://192.168.1.202:8080/?action=stream
打开一个网页输入下面地址就能够看到一个静态图片：
http://192.168.1.202:8080/?action=snapshot
6)在mjpg源码下有一个www的目录，这个一个网络使用mjpg的实例，结合web服务器(boa)可以实现一些其他相关功能。

基于mjpg-streamer-r63的源码分析之：基础知识详细解释[一]

/article/8011169.html

FFMPEG库裁剪

经过长期模式，测试，可以用以下方法缩小，在configure的时候加上类似如下的参数:

--disable-encoders --disable-decoders --enable-decoder=h264

解释

--disable-encoders 屏蔽所有编码器

--disable-decoders 屏蔽所有解码器

--enable-decoder=h264 启用h264解码器

由上面可以看出编码器也可以先屏蔽所有编码器，再启用某些编码器。

这样编译出来的 avcodec.dll就会变成 700多K左右，另外几个 avutil.dll、swscale.dll 等等，大小

不会变。它们也没有多大。
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