2011年5月11日星期三

Mjpeg Webcam

裝置：uvc webcam

軟體：v4l2

Download : mjpeg.tar.bz2

Source Code:

http://sourceforge.net/projects/mjpg-streamer/files/mjpg-streamer/Sourcecode/

tar -xvfz mjpg-streamer-r63.tar.gz

make

xxx@xxx-desktop:~/mjpeg/mjpg-streamer-r63$ ./mjpg_streamer

MJPG Streamer Version.: 2.0

i: Using V4L2 device.: /dev/video0

i: Desired Resolution: 640 x 480

i: Frames Per Second.: 5

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

Unable to set format: Invalid argument

Init v4L2 failed !! exit fatal

i: init_VideoIn failed

xxx@xxx-desktop:~/mjpeg/mjpg-streamer-r63$ ./mjpg_streamer -i "input_uvc.so -d /dev/video0 -y" -o "output_http.so"

MJPG Streamer Version.: 2.0

i: Using V4L2 device.: /dev/video0

i: Desired Resolution: 640 x 480

i: Frames Per Second.: 5

i: Format............: YUV

i: JPEG Quality......: 80

o: www-folder-path...: disabled

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

o: username:password.: disabled

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

*******************************web browser

The command for mplayer i am using is mplayer -nocache -demuxer lavf "http://localhost:8080/?action=stream&ignored.mjpg"

2011年5月9日星期一

eclipse for qt java install

A Download

i、下載JRE(Java Runtime Environment) 。(http://java.sun.com/javase/downloads/index.jsp)

安裝JRE

... /usr/local ]#chmod +x jxx-linux-i586-rpm.bin

... /usr/local ]#./jxxx-linux-i586-rpm.bin

產生/usr/local/jdk1.6.0_25

修改路徑

$gedit /etc/profile

...

export JAVA_HOME=/usr/local/jdk1.6.0_25

export JRE_HOME=/usr/local/jdk1.6.0_25/jre

export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME;lib:$CLASSPATH

export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

...

umask 022

測試是否成功

source /ect/profile

沒任何提示表示成功

ii. (測試Java是否安装成功)
[root@localhost ~]#java –version
http://www.cnblogs.com/images/cnblogs_com/oomusou/JRE3.jpg

iii. download g++

sudo apt-get install build-essential

輸入 gcc，出現“gcc: no input files”，安裝成功！

iv. 下載qt framework

http://qt.nokia.com/downloads

LGPL -> Qt libraries 4.7.3 for Linux/X11(204 MB)

步驟如下連結

http://www.speedfaq.com/jingyan/17375.html

v. 下載 qt and eclipse

http://qt.nokia.com/developer/eclipse-integration

tar vxfz qt-eclipse-integration-linux.x86-1.6.1.tar.gz 後先保留後面步驟使用

linux下eclipse的安装

for c/c++

(下載eclipse-linuxtools-helios-SR2-incubation-linux-gtk)
(解壓後eclipse-SDK-3.2.1-linux-gtk.tar.gz)執行

我是安裝c/c++ eclipse 為了整合qt 之用

安裝步驟如上連結且測試了Hello World 發覺eclipse 真是酷也接下來qt 整在一起吧

install CDT

http://www.eclipse.org/cdt/downloads.php

或者打開eclipse install new software :
選擇或鍵入 http://download.eclipse.org/tools/cdt/releases/helios 此相關pending 後勾選全部下載

接下來qt framework 我解壓縮放在如上 A 第iv 點make 路徑:/usr/local/Trolltech

A v步驟後: 裡面會和 eclipse的資料夾裡features和plugins兩個資料夾，分別將這兩資料夾內的內容放置你Eclipse(以我為例我的Eclipse放置/opt/Eclipse)相對應的資料夾內(Eclipse中也有features和plugins兩個資料夾)，然後啟動 Eclipse，即可。這樣QT就整合完成了。

重起eclipse 後請設好路徑

version name: 4.7.3

Bin path: /usr/local/Trolltech/Qt-4.7.3/bin

Include: /usr/local/Trolltech/Qt-4.7.3/include

**********************************

最後注意開發專案

c\c++ 要include Trollech lib compiler:Gnu\g++

qmake -project

qmake

make

Run

QT console compiler: Gun\ g++