compression

问题 Inside my app, I am trying to download about 180 small audio files all at once. I tried the BackgroundTransferService, but it does not seem stable with so many small files. So, now I am downloading a ZIP of all those audio and want extract them in "audio" folder. I tried the method in this thread: How to unzip files in Windows Phone 8 But I get this error: 'System.IO.IOException' occurred in mscorlib.ni.dll... in the following code. How can I overcome this issue? while (reader.ReadInt32() !=

问题 We are implementing a client-side web application that communicates with the server exclusively via XMLHttpRequests (and AJAX engine). The XHR responses usually are plain text with some XML on it but in this case, the server is sending compressed data in .tgz file type. We know for sure that the data that the server is sending is correct because if we use an HTTP command-line client such as curl, the file sent as response is valid and contains the expected data. However, when making an AJAX

问题 I have a huge collection of very small objects. To ensure the data is stored very compactly I rewrote the class to store all information within a byte-array with variable-byte encoding. Most instances of these millions of objects need only 3 to 7 bytes to store all the data . After memory-profiling I found out that these byte-arrays always take at least 32 bytes . Is there a way to store the information more compactly than bit-fiddled into a byte[]? Would it be better to point to an unmanaged

问题 How to reduce Image Size without changing image dimensions(Height and width should be same).In android How can i do this?.I want to reduce the quality of image.I want to send it over the network.So size should be smaller.I need a functionality similar to https://play.google.com/store/apps/details?id=com.shoozhoo.imageresizer&hl=en 回答1: Note the application linked reduce the size of the image by cropping it. If you want to reduce the stored bytes of an image you need to compress it using a

问题 I'm using WIA for scanning images and noticed, that images aren't stored efficiently as SaveFile apparently doesn't make use of compression. Currently I'm using this code: WIA.ImageFile img = (WIA.ImageFile)item.Transfer(WIA.FormatID.wiaFormatPNG); img.SaveFile(path); Is there a way to use WIA for compression, or how else could I save the image using compression? EDIT: Using the following code I was able to decrease file size from 25 to 10 MB. WIA.ImageFile img = (WIA.ImageFile)item.Transfer

问题 I've been on this for hours.. the first thing i did was follow this tutorial which had this code: var express = require('express'); var app = express(); // New call to compress content app.use(express.compress()); app.use(express.static(__dirname + '/public')); app.listen(3333); naturally the code was outdated.. and I got this error: Error: Most middleware (like compress) is no longer bundled with Express and must be installed separately. Please see https://github.com/senchalabs/connect

问题 I've been on this for hours.. the first thing i did was follow this tutorial which had this code: var express = require('express'); var app = express(); // New call to compress content app.use(express.compress()); app.use(express.static(__dirname + '/public')); app.listen(3333); naturally the code was outdated.. and I got this error: Error: Most middleware (like compress) is no longer bundled with Express and must be installed separately. Please see https://github.com/senchalabs/connect

问题 i need to compress my css as part of my ant build. i noticed that csstidy does this, but it would not be easy to include this in my ant build because i would need to use a different binary on different platforms. so, is there a java css compressor that people use? 回答1: Check out the Yahoo YUI compressor. It compresses CSS as well as Javascript, and it's written in Java. Edit: You should be using some sort of HTTP compression as well , like mod_deflate or mod_gzip. 回答2: I recently released CSS

问题 I have a sequence of n integers in a small range [0,k) and all the integers have the same frequency f (so the size of the sequence is n=f∗k ). What I'm trying to do now is to compress this sequence while providing random access (what is the i-th integer). The time to achieve random access doesn't have to be O(1). I'm more interested in achieving high compression at the expense of higher random access times. I haven't tried with Huffman coding since it assigns codes based on frequencies (and

问题 I've implemented upload documents functionality on browser where a user can upload around 4-5 documents at a time. However, when we upload the documents having file size around 5MB and having slow internet connection(set slow 3G network in the browser's dev tools), we can not upload all the files due to internet timeout! To upload documents successfully having large size and slow internet connection, I've compressed the images and it solves my issue. But the user can also upload PDF files of