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Description: 1、简介
此代码是IS0 13818-5 MPEG2系统层协议分析代码，经过我的一点修改，现在终于可以在VC++ 6.0下编译运行, 发布上来献给那些为了理解MPEG2系统层协议而苦苦加班的程序员。为了可以在windows下编译，我修改了部分操作系统相关代码，注解掉了一些main函数，只留下decode.cpp中的main函数没有注解，所以编译后的程序是TS流系统层解码分析程序，如果要实现其他功能如encode，只要把decode.cpp中的main函数注解，把encode.cpp中的main函数注解去掉即可。
2、VC++6.0编译设置
需要在菜单Poject-〉Settings 弹出的对话框中把预编译头设置成Not using precompiled headers,如Vc_setting.jpg中的图片所示。
3、运行
编译生成decode2.exe文件后在命令行如下运行
decode2.exe d:\\cctv.ts
一开始在没有分析完PAT和PMT表时会打印一些如unexpected pid: 513的消息，请耐心等待一会儿就会发现分析的系统层信息打印了。可能刷屏很快导致你看不清信息，可以将打印信息重定向到某个文件中，如下：
decode2.exe d:\\cctv.ts >c:\\ts_decode.txt
运行decode2.exe的同时会在当前目录生成过滤后的PES文件，文件名格式stream512，512为PID。
-a brief account of this code is ISO 13818-5 MPEG2 system layer protocol analysis code, After I few modifications, now he can finally in VC 6.0 compiler operation, Published line with those dedicated to understanding MPEG2 system layer protocol and an overtime programmers. To be compiled under the windows, I revised the relevant part of the operating system code, Notes swap some of the main function, leaving only the main decode.cpp function without notes, So when a compiled program is TS system layer decoding process analysis, if we are to achieve other functions such as encode. decode.cpp as long as the main function of the rich encode.cpp put the main function annotation will be removed. 2. VC 6.0 compiler installed in the menu Poject - "Settings pop-up dialog box put pre - translat
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Size: 100002 |
Author: 陈水德 |
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Description: 调用xvid库函数实现实时编码，我封装成D
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Size: 1933099 |
Author: fu |
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Description: 文件加密算法，包括DES等等，其中有详细说明-document encryption algorithms, including DES, etc., which are described in detail
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Size: 211968 |
Author: 胡永春 |
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Description: 1、简介
此代码是IS0 13818-5 MPEG2系统层协议分析代码，经过我的一点修改，现在终于可以在VC++ 6.0下编译运行, 发布上来献给那些为了理解MPEG2系统层协议而苦苦加班的程序员。为了可以在windows下编译，我修改了部分操作系统相关代码，注解掉了一些main函数，只留下decode.cpp中的main函数没有注解，所以编译后的程序是TS流系统层解码分析程序，如果要实现其他功能如encode，只要把decode.cpp中的main函数注解，把encode.cpp中的main函数注解去掉即可。
2、VC++6.0编译设置
需要在菜单Poject-〉Settings 弹出的对话框中把预编译头设置成Not using precompiled headers,如Vc_setting.jpg中的图片所示。
3、运行
编译生成decode2.exe文件后在命令行如下运行
decode2.exe d:\cctv.ts
一开始在没有分析完PAT和PMT表时会打印一些如unexpected pid: 513的消息，请耐心等待一会儿就会发现分析的系统层信息打印了。可能刷屏很快导致你看不清信息，可以将打印信息重定向到某个文件中，如下：
decode2.exe d:\cctv.ts >c:\ts_decode.txt
运行decode2.exe的同时会在当前目录生成过滤后的PES文件，文件名格式stream512，512为PID。
-a brief account of this code is ISO 13818-5 MPEG2 system layer protocol analysis code, After I few modifications, now he can finally in VC 6.0 compiler operation, Published line with those dedicated to understanding MPEG2 system layer protocol and an overtime programmers. To be compiled under the windows, I revised the relevant part of the operating system code, Notes swap some of the main function, leaving only the main decode.cpp function without notes, So when a compiled program is TS system layer decoding process analysis, if we are to achieve other functions such as encode. decode.cpp as long as the main function of the rich encode.cpp put the main function annotation will be removed. 2. VC 6.0 compiler installed in the menu Poject- "Settings pop-up dialog box put pre- translat
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Size: 99328 |
Author: 陈水德 |
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Description: 几和经典的加密方法有md5,base64,crc,des等几和经典的加密方法有md5,base64,crc,des等-Few and classical encryption methods are md5, base64, crc, des, such as a few classic encryption methods are md5, base64, crc, des, etc.
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Size: 691200 |
Author: JOE |
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Description: 调用xvid库函数实现实时编码，我封装成D-Xvid library function call real-time encoding, I Package D
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Size: 2217984 |
Author: fu |
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Description: // 命令行方式的文件加密和解密
//*** *** *** *** *** *** *** *** ****
// How to use
//****************************************************
/*
The comand line is like this:
command line:
crypt [cpParams] [cpFile] [cpKey]
arguments description:
cpParams : /E|/e == Encode
/D|/d == Decode
/? == help information
else == unknown params.
cpFile : file which needed Encode or Decode
cpKey : key which used for Encoding or Decoding
*/
-//Command line file encryption and decryption of //****************************************************// How to use //****************************************************/* The comand line is like this: command line: crypt [cpParams] [cpFile] [cpKey] arguments description: cpParams:/E |/e == Encode /D |/d == Decode /? == help information else == unknown params. cpFile: file which needed Encode or Decode cpKey: key which used for Encoding or Decoding* /
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Size: 31744 |
Author: sinof |
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Description: Unlike a multiplexer that selects one individual data input line and then sends that data to a single output line or switch, an Encoder takes all the data inputs one at a time and converts them to a single encoded output. Then, it is a multi-input data line, combinational logic circuit that converts the logic level "1" data at its inputs to an equivalent binary code at its output. Generally encoders produce outputs of 2-bit, 3-bit or 4-bit codes depending upon the number of data input lines and a "n-bit" encoder has 2n input lines with common types that include 4-to-2, 8-to-3 and 16-to-4 line configurations. Encoders are available to encode either a decimal or hexadecimal input pattern to typically a binary or B.C.D. output code.-Unlike a multiplexer that selects one individual data input line and then sends that data to a single output line or switch, an Encoder takes all the data inputs one at a time and converts them to a single encoded output. Then, it is a multi-input data line, combinational logic circuit that converts the logic level "1" data at its inputs to an equivalent binary code at its output. Generally encoders produce outputs of 2-bit, 3-bit or 4-bit codes depending upon the number of data input lines and a "n-bit" encoder has 2n input lines with common types that include 4-to-2, 8-to-3 and 16-to-4 line configurations. Encoders are available to encode either a decimal or hexadecimal input pattern to typically a binary or B.C.D. output code.
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Size: 13312 |
Author: VLSI |
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Description: Encoder Using Assign Statements:
Unlike a multiplexer that selects one individual data input line and then sends that data to a single output line or switch, an Encoder takes all the data inputs one at a time and converts them to a single encoded output. Then, it is a multi-input data line, combinational logic circuit that converts the logic level "1" data at its inputs to an equivalent binary code at its output. Generally encoders produce outputs of 2-bit, 3-bit or 4-bit codes depending upon the number of data input lines and a "n-bit" encoder has 2n input lines with common types that include 4-to-2, 8-to-3 and 16-to-4 line configurations. Encoders are available to encode either a decimal or hexadecimal input pattern to typically a binary or B.C.D. output code.
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Size: 10240 |
Author: VLSI |
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Description: 这是关于LDPC信道编码模块设计的程序
打开源程序，先运行gengrate_h.m程序，陆续将码长设置为756bit，列重设置为3，行重设置为9。在Workspace中同时将H、A、B、C、D、E、Hget、Fget、g、Tget这是个变量选择另存为encode_in.mat 格式。再运行main_encode.m进行编码，主程序运行后，在当前目录下，自动生成编码结果文件“encode—out.mat”，这将作为下一次扩频调制仿真实验的的输入信号。最后分别查看Workspace中的变量s（编码前数据）和xyuan（编码后数据）的波形。
对比后，可以看出编码前的数据码片长度为504bit，编码后的码片数据长度为756bit。编码效率=编码前码片长度/编码后码片长度=2/3。-This is about the LDPC channel coding module design process
Open source, first run gengrate_h.m program, phasing out the code length is set to 756bit, column re-set to 3, line weight is set to 9. In the Workspace in the same time, H, A, B, C, D, E, Hget, Fget, g, Tget This is a variable select Save As encode_in.mat format. Then run main_encode.m encoding, the main program running in the current directory, the results of automatically generated code file "encode-out.mat", which will serve as the next simulation of the spread spectrum modulation input signal. Finally, the variables were View Workspace in s (before encoding data) and xyuan (encoded data) waveform.
After comparison, we can see the data before encoding chip length of 504bit, encoded data length of chip 756bit. Coded before coding efficiency = chip length/length of the encoded chip = 2/3.
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Size: 15360 |
Author: 吴健 |
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Description: 图像处理于MATLAB上的应用，能很好的处理一些熵，概率等问题-(a)Find the entropy of this source using Matlab
(b)Design the Huffman code for this source using Matlab.
(c) Randomly generate a source sequence of length 500 symbols drawing the symbols from the true source distribution. Encode the generated sequence using the Huffman code developed in (b). Decode the sequence and compare the decoded and original sequences.
(d)Find the efficiency of the code in this case.
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Size: 8192 |
Author: 李渊 |
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Description: 通过MATLAB的程序解决相应图上处理中熵值和概率的问题-Adaptive Arithmetic coding. A source generates symbols from alphabet {A, B, C, D}.
Probabilities of occurrence of the symbols are initially estimated as: Pr(A)=Pr(B)=0.25,
Pr(C)= 0.2, and Pr(D)=0.3. After 100 generated symbols, the statistics changes to Pr(A)=
0.1, Pr(B)=0.3, Pr(C)= 0.4, and Pr(D)=0.2. After 300 symbols, statistics is: Pr(A)=0.6,
Pr(B)=0.05 Pr(C)=0.1, and Pr(D)=0.25.
Randomly generate a source sequence of length 500 symbols drawing the
symbols from the true source distributions. That is, for the first 100 symbols, next
300 symbols, and last 100 symbols use the three distributions above,
respectively. Encode this sequence using adaptive arithmetic coding that
adaptively changes frequency of the source symbol occurrence every 100
symbols. Decode the sequence and compare the decoded and original sequences.
Find the efficiency of the code.
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Size: 7168 |
Author: 李渊 |
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Description: 二维码编码所需函数头文件，bss-generator-qrcode-v3.1.6-win32，-this is a header for 2-D encode: bss-generator-qrcode-v3.1.6-win32
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Size: 3786752 |
Author: 王伟 |
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Description: 本程序用于将任何文件进行Base64编码，是否是标准Base64编码取决于Makefile的DFLAGS变量是否添加-DPRIVATE_BASE64。
使用本程序的方法是：
./base64convert -e 1.mp3 encode.data //将1.mp3进行Base64编码，编码后的结果存放到encode.data文件
./base64convert -d encode.data 2.mp3 //通过encode.data进行解码，解码的结果2.mp3这个文件
这个工程的各个源文件已经分散到了不同的文件夹，请自行分析Makefile，确定各个源文件的编译链接过程。
有两个知识点请自己查找资料学习之（非常重要！！！）：
gcc -D 选项的作用
gcc -I 选项的作用
-
This procedure for any files Base64 encoding, depending on whether the standard Base64 encoding of DFLAGS Makefile variable is added-DPRIVATE_BASE64.
With this program is:
./base64convert-e 1.mp3 encode.data // results 1.mp3 Base64 encoding of the encoded file stored encode.data
./base64convert-d encode.data 2.mp3 // decoding result of decoding the file by encode.data 2.mp3
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Size: 6144 |
Author: yangjiaming |
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Description: 1) I：初始化（Initialization）。从终端读入字符集大小n，以及n个字符和n个权值，建立哈夫曼树，并将它存于文件hfmTree中。
2) E：编码（Encoding）。利用已建好的哈夫曼树（如不在内存，则从文件hfmTree中读入），对文件ToBeTran中的正文进行编码，然后将结果存入文件CodeFile中。
3) D：译码（Decoding）。利用已建好的哈夫曼树将文件CodeFile中的代码进行译码，结果存入文件TextFile中。(1) I: initialization (Initialization). From the terminal read into the character set size, N, and n characters and N weights, the establishment of Huffman tree, and save it in the file hfmTree.
2) E: coding (Encoding). Using the built Huffman tree (if not in memory, then read it from the file hfmTree), encode the text in the file ToBeTran, and then put the results in the file CodeFile.
3) D: decoding (Decoding). Huffman tree has been built using the file CodeFile code for decoding, the results stored in the file TextFile.)
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Size: 586752 |
Author: 星恋*情殇
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