compression

I am sending a JSONObject to my Webserver from an Android client using the code from this example . Reproducing code here import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.params.BasicHttpParams; import org.apache.http.params.HttpConnectionParams; import org.apache.http.params.HttpParams; int TIMEOUT_MILLISEC = 10000; // = 10 seconds HttpParams httpParams = new BasicHttpParams(); HttpConnectionParams.setConnectionTimeout(httpParams, TIMEOUT

I'd like to be able to do random access into a gzipped file. I can afford to do some preprocessing on it (say, build some kind of index), provided that the result of the preprocessing is much smaller than the file itself. Any advice? My thoughts were: Hack on an existing gzip implementation and serialize its decompressor state every, say, 1 megabyte of compressed data. Then to do random access, deserialize the decompressor state and read from the megabyte boundary. This seems hard, especially since I'm working with Java and I couldn't find a pure-java gzip implementation :( Re-compress the

I would like to have a reversible compression for a type of string so that i can include it in URLs without keeping track of what it refers to. The string i would like to compress is SVG path string, here is a short primer: http://apike.ca/prog_svg_paths.html Basically, the string contains a character, followed by arbitrary number of integers, then another character followed by arbitrary number of integers and so on. If anyone knows of a good resource for this, it would be much appreciated! Jason olliej Many compression algorithms are well documented, a couple even have js implementations:

I'm trying to find a Python library that would take an audio file (e.g. .ogg, .wav) and convert it into mp3 for playback on a webpage. Also, any thoughts on setting its quality for playback would be great. Thank you. Looks like PyMedia does this: http://pymedia.org/ and some more info here on converting to various formats, whilst setting the bitrate: http://pymedia.org/tut/recode_audio.html e.g. params= { 'id': acodec.getCodecId('mp3'), 'bitrate': r.bitrate, 'sample_rate': r.sample_rate, 'ext': 'mp3', 'channels': r.channels } enc= acodec.Encoder( params ) I wrote a library designed to do that

I want to use Java to compress a folder to a tar file (in programmatic way). I think there must be an open source or library to do it. However, I cannot find such method. Alternatively, could I make a zip file and rename its extended name as .tar? Anyone could suggest a library to do it? Thanks! You can use the jtar - Java Tar library . Taken from their site: JTar is a simple Java Tar library, that provides an easy way to create and read tar files using IO streams. The API is very simple to use and similar to the java.util.zip package. An example, also from their site: // Output file stream