luis@16: /*
luis@28:  * HumanEchoServlet
luis@16:  *
luis@16:  * Version information
luis@16:  *
luis@16:  * 3 December 2013
luis@16:  *
luis@16:  * Copyright notice
luis@16:  */
luis@15: 
luis@15: import java.util.Properties;
luis@15: import java.io.IOException;
luis@15: 
luis@28: import java.io.FileInputStream;
luis@28: import java.io.BufferedInputStream;
luis@28: import java.io.File;
luis@28: 
luis@21: import org.apache.log4j.Logger;
luis@16: 
luis@28: import javax.servlet.*;
luis@28: import javax.servlet.http.*;
luis@0: 
luis@0: import com.mathworks.toolbox.javabuilder.MWJavaObjectRef;
luis@0: import com.mathworks.toolbox.javabuilder.MWNumericArray;
luis@11: import com.mathworks.toolbox.javabuilder.MWStructArray;
luis@0: import com.mathworks.toolbox.javabuilder.MWException;
luis@15: import com.mathworks.toolbox.javabuilder.internal.MCRConfiguration;
luis@15: 
luis@15: import uk.ac.soton.isvr.*;
luis@0: 
luis@0: public class HumanEchoServlet extends HttpServlet {
luis@0:     private HumanEcho echo;
luis@28:     private static Logger logger = Logger.getLogger(HumanEchoServlet.class);
luis@0: 
luis@28:     private String wavdir = "";
luis@16: 
luis@0:     public void init(ServletConfig config) throws ServletException {
luis@0:         super.init(config);
luis@0: 
Chris@42: 	System.err.println("In init");
Chris@42: 
Chris@42: 	logger.error("java.library.path is " + 
Chris@42: 		     System.getProperty("java.library.path"));
Chris@42: 
luis@15:         try {
Chris@42: 	    // Read directory properties
luis@15:             Properties properties = new Properties();
Chris@42:             properties.load
Chris@42: 		(Thread.currentThread().getContextClassLoader().
Chris@42: 		 getResourceAsStream("myapp.properties"));
luis@15: 
luis@28:             wavdir = properties.getProperty("outdir");
luis@15: 
Chris@42: 	    System.err.println("WAV file directory is " + wavdir);
Chris@42: 
luis@15:         } catch (IOException e) {
luis@15:             e.printStackTrace();
luis@15:         }
luis@15: 
luis@0:         try {
Chris@42: 	    // Test that we can construct one of the MATLAB objects
Chris@42: 	    
Chris@42: 	    long before = System.currentTimeMillis();
luis@0:             echo = new HumanEcho();
Chris@42: 	    long after = System.currentTimeMillis();
Chris@42: 	    System.err.println("Created a HumanEcho object: it took " + (after - before) + " ms");
Chris@42:         } catch (MWException e) {
luis@0:             e.printStackTrace();
luis@0:         }
luis@0:     }
luis@0: 
luis@0:     public void destroy() {
luis@0:         super.destroy();
luis@0: 
Chris@42:         if (echo != null) {
luis@0:             echo.dispose();
luis@0:         }
luis@0:     }
luis@0: 
luis@11:     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
luis@0: 
Chris@47: 	System.err.println("In doGet");
Chris@47: 
luis@11:         // todo: validate/normalise distance
luis@11:         int dist = Integer.parseInt(request.getParameter("dist"));
luis@38: 
luis@38:         logger.info("String azim is: " + request.getParameter("azim"));
luis@38:         Float azim = Float.parseFloat(request.getParameter("azim"));
luis@38: 
luis@11:         MWStructArray Input = null;
luis@11:         HumanEcho echo;
luis@0: 
luis@28:         String outputfname = new String();
luis@28: 
Chris@47: 	System.err.println("Got dist and azim");
Chris@42: 
luis@11:         try {
Chris@42: 	    //!!! erch, shouldn't be creating a new one on each request as well as a global one
luis@11:             echo = new HumanEcho();
luis@0: 
luis@16:             logger.error("We are logging!");
luis@28:             logger.warn(System.getProperty("catalina.base"));
luis@28: 
Chris@42: 	    System.err.println("Done some logging");
Chris@42:             System.err.println(System.getProperty("catalina.base"));
luis@16: 
luis@11:             // Matlab structure:
Chris@47:             // Input = struct('dist', 0.9, 'azim', 0, 'orient', 'horz', 'dirweight', 0.2, 'outdir', '/tmp/wav', 'outname', 'foo.wav')
luis@0: 
Chris@47:             String[] InputStructFields = {"dist", "azim", "orient", "dirweight", "outdir", "outname"};
Chris@47: 
luis@11:             Input = new MWStructArray(1, 1, InputStructFields);
luis@11:             Input.set("dist", 1, Double.valueOf(dist));
luis@38:             Input.set("azim", 1, Double.valueOf(azim));
luis@11:             Input.set("orient", 1, "horz");
luis@11:             Input.set("dirweight", 1, Double.valueOf(0.2));
Chris@46: 	    Input.set("outdir", 1, wavdir);
Chris@46: 
luis@11:             // the ofname should depend on the parameters
luis@11:             StringBuilder sb = new StringBuilder();
luis@17:             sb.append("e_d");
luis@11:             sb.append(dist);
luis@38:             sb.append("_a");
luis@38:             sb.append(azim);
luis@28:             outputfname = sb.toString();
luis@11: 
Chris@46:             Input.set("outname", 1, outputfname);
luis@11: 
luis@11:             // todo: before calling should test if wav already exists..
luis@11:             Object[] result = echo.simulateBinauralSignals(Input);
luis@0:         }
luis@0:         catch(MWException e) {
luis@0:             e.printStackTrace();
luis@0:         }
luis@0: 
luis@28:         // Creating the stream
luis@28:         ServletOutputStream stream = null;
luis@28:         BufferedInputStream buf = null;
luis@28: 
luis@28:         try{
luis@28:             stream = response.getOutputStream();
luis@28:             File wavfile = new File(outputfname);
luis@28: 
luis@28:             //set response headers
luis@32:             response.setContentType("audio/x-wav");
luis@28:             response.addHeader("Content-Disposition","attachment; filename=" + outputfname );
luis@28:             response.setContentLength( (int) wavfile.length( ) );
luis@28: 
luis@28:             FileInputStream input = new FileInputStream(wavfile);
luis@28:             buf = new BufferedInputStream(input);
luis@28:             int readBytes = 0;
luis@28: 
luis@28:             //read from the file; write to the ServletOutputStream
luis@28:             while((readBytes = buf.read( )) != -1)
luis@28:                 stream.write(readBytes);
luis@28: 
luis@28:         } catch (IOException ioe){
luis@28:             throw new ServletException(ioe.getMessage( ));
luis@28:         } finally {
luis@28:             //close the input/output streams
luis@28:             if(stream != null)
luis@28:                 stream.close( );
luis@28: 
luis@28:             if(buf != null)
luis@28:                 buf.close( );
luis@28:           }
luis@28: 
luis@32:         logger.info("Wrote file:" + outputfname);
luis@0:     }
luis@0: }