compression

问题 I've been reading this article from Valve that seems to explain the architecture of their multiplayer system. It seems they delay rendering by a couple ticks on the client so they can handle dropped packets, but they also send packets as "delta snapshots" (the difference between two adjacent states). Suppose we have times A, B, C, and the client is correct at time A but drops the packet at B, and then receives the one at C. How can it correctly deduce the state at time C? The packet at C only

问题 I'm wondering if anyone knows of a tool that will aggressively rewrite CSS to compress styles more efficiently. e.g. I'd like: .foo { color : red; font-size: 16px; height: 20px; } .bar { color : red; font-size: 16px; height: 30px; } to be compressed to: .foo, .bar { color : red; font-size : 16px; } .foo { height : 20px; } .bar { height : 30px; } To be clear, all the minifiers I know of, like YUI Compressor, only remove white-space and possibly join a few properties (like font-family and font

问题 I tried the java.util.zip package, it is too slow. Then I found LZMA SDK and 7z jbinding but they are also lacking something. The LZMA SDK does not provide a kind of documentation/tutorial of how-to-use, it is very frustrating. No javadoc. While the 7z jbinding does not provide a simple way to extract only 1 file, however, it only provide way to extract all the content of the zip file. Moreover, it does not provide a way to specify a location to place the unzipped file. Any idea please??? 回答1

问题 How is gzip compression for Jboss 5.1.0 enabled? Within the tomcat http connector right? I cant remember where this file is stored, server.xml? 回答1: The file is under server.xml and you are correct in stating that you have to updated the http connector. Following link is info for tomcat, but same applies to JBoss except location of server.xml file. I believe you need to update the server.xml under deploy\jbossweb.sar\ http://viralpatel.net/blogs/2008/11/enable-gzip-compression-in-tomcat.html

问题 I've coded a small application that should uncompress data encoded in the gzip/deflate format. In order to accomplish this,I'm using the ZLIB library, using the uncompress function. The problem is that the function doesn't work! In orher words, data is not uncompressed! I post here the code: int (*decompress)(PBYTE,PULONG,PBYTE,ULONG); void DecodeData(PBYTE data,ULONG dataSize){ LoadLibrary("C:\\zlib1.dll"); decompress=(int(*)(PBYTE,PULONG,PBYTE,ULONG))GetProcAddress( GetModuleHandle("zlib1

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 5 years ago . I'm having trouble coming up with a way too decompress a String in Java. This is a basic Java class I'm taking so it only requires basic commands, nothing too fancy. The objective it to able to type C:\>java Compress -c aaaabbbbbcc in the command prompt and it will print a4b5c2 (like it is compress

问题 I would like to create a tar archive in Java. I have files which are constantly being created and I'd like a worker thread to take a reference to those files from a queue and copy them into the archive. I tried using Apache Compression library's TarArchiveOutputStream to do this, but I do not wish to keep the archive open for the entire duration of the program (since unless i finalize the archive, it can become corrupted - so i'd rather append to it in batches), and I haven't found a good way

问题 I am implementing clipboard, and I want to allocate memory for png image one time. Is there some way to predict maximum size of png file? 回答1: A PNG image includes several things: Signature and basic metadata (image size and type) Palette (only if the image is indexed) Raw pixel data Optional metadata (ancillary chunks) End of image chunk Size of item 1 is fixed: 8 + 12 + 11 = 31 bytes Size of item 2 (if required) is at most 12 + 3 * 256 = 780 bytes Size of item 5 is fixed: 12 bytes Item 3,

问题 I've built a Windows Phone class to convert some WriteableBitmap into a AVI Full Frame (Uncompressed). Videos are really huge. Is there a simple codec implementation existing, like a codec that just zip images, or something that is making a next/previous XOR then zip it in jpeg? Windows Phone doesn't allow any unsafe code and most DLL cannot be wrapped into a C# WP library. So that's why I'm coding something from scratch. Note that I'm more efficient at coding from scratch than in studying C+

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 11 months ago . I realize this question has been asked before, but I haven't seen an answer that works for my needs. Basically I have full length songs in .caf format but I need to be able to upload/download them from a server. Is it viable to do compression (to something like .mp3 or .wav) on