Fixed up the ripping process as well as progress reporting. Made progress

reporting work for the cdparanoia ripper.


git-svn-id: https://samskivert.googlecode.com/svn/trunk@37 6335cc39-0255-0410-8fd6-9bcaacd3b74c

projects/robodj/src/java/robodj/convert/CDParanoiaRipper.java

@@ -1,5 +1,5 @@
 //
-// $Id: CDParanoiaRipper.java,v 1.4 2000/12/10 07:01:24 mdb Exp $
+// $Id: CDParanoiaRipper.java,v 1.5 2001/02/06 08:18:00 mdb Exp $
 
 package robodj.convert;
 
@@ -106,7 +106,7 @@ public class CDParanoiaRipper implements Ripper
 	}
     }
 
-    public void ripTrack (int index, String target,
+    public void ripTrack (TrackInfo[] info, int index, String target,
 			  ConversionProgressListener listener)
 	throws ConvertException
     {
@@ -116,6 +116,14 @@ public class CDParanoiaRipper implements Ripper
 	cmd.append(" ").append(index); // add track number
 	cmd.append(" ").append(target); // add output file name
 
+	// we'll need this for later
+	RE regex;
+	try {
+	    regex = new RE("^##: -?\\d+ \\[(\\S+)\\] @ (\\d+)");
+	} catch (REException ree) {
+	    throw new ConvertException("Can't compile regexp?! " + ree);
+	}
+
 	try {
 	    // fork off a cdparanoia process to read the TOC
 	    Runtime rt = Runtime.getRuntime();
@@ -125,9 +133,41 @@ public class CDParanoiaRipper implements Ripper
 	    BufferedInputStream bin = new BufferedInputStream(in);
 	    DataInputStream din = new DataInputStream(bin);
 
-	    // read output from the subprocess and chuck it for now
-	    while (din.readLine() != null) {
-		// la la la
+	    // read output from the subprocess
+	    String out;
+
+	    // figure out what our progress boundaries are
+	    long tstart = info[index-1].offset * MAGIC_FACTOR;
+	    long tlength = info[index-1].length * MAGIC_FACTOR;
+	    int lastReported = 0;
+
+	    while ((out = din.readLine()) != null) {
+		// if they don't care about the output then neither do we
+		if (listener == null) {
+		    continue;
+		}
+
+		// parse the output
+		REMatch match = regex.getMatch(out);
+		if (match != null) {
+		    String action = match.toString(1);
+		    long offset = -1L;
+		    try {
+			offset = Long.parseLong(match.toString(2));
+		    } catch (NumberFormatException nfe) {
+			// System.err.println("Malformed position info: " + out);
+			continue;
+		    }
+
+		    int pctDone = (int)(100 * (offset - tstart) / tlength);
+		    if (pctDone - lastReported >= 1) {
+			listener.updateProgress(pctDone);
+			lastReported = pctDone;
+		    }
+
+		} else {
+		    // System.out.println("Couldn't match: " + out);
+		}
 	    }
 
 	    // check the return value of the process
@@ -146,9 +186,15 @@ public class CDParanoiaRipper implements Ripper
 					   "ripper process to exit.");
 	    }
 
+	    // if everything was successful, report completion
+	    listener.updateProgress(100);
+
 	} catch (IOException ioe) {
 	    throw new ConvertException(
 		"Error communicating with ripper:\n" + ioe);
 	}
     }
+
+    // cdparanoia reports length in sectors and progress in 
+    protected static final int MAGIC_FACTOR = 1176;
 }

projects/robodj/src/java/robodj/convert/ConversionProgressListener.java

@@ -1,5 +1,5 @@
 //
-// $Id: ConversionProgressListener.java,v 1.1 2000/10/30 22:21:11 mdb Exp $
+// $Id: ConversionProgressListener.java,v 1.2 2001/02/06 08:18:00 mdb Exp $
 
 package robodj.convert;
 
@@ -18,5 +18,5 @@ public interface ConversionProgressListener
      * herein will be mapped to a global progress indication by the
      * calling software (in the case of converting an entire CD).
      */
-    public void updateProgress (float percentComplete);
+    public void updateProgress (int percentComplete);
 }

projects/robodj/src/java/robodj/convert/RipTest.java

@@ -1,5 +1,5 @@
 //
-// $Id: RipTest.java,v 1.2 2000/10/30 22:21:11 mdb Exp $
+// $Id: RipTest.java,v 1.3 2001/02/06 08:18:00 mdb Exp $
 
 package robodj.convert;
 
@@ -79,8 +79,26 @@ public class RipTest
 		System.out.println("Matched no tracks?!");
 
 	    } else {
-		// finally try the CDDB lookup
+		// try the CDDB lookup
 		lookupCDDB("us.cddb.com", info);
+
+		// rip a track, for fun
+		int track = 2;
+		System.out.println("Ripping track " + track +
+				   " [" + info[track-1].offset +
+				   ", " + info[track-1].length + "]...");
+
+		// report our progress
+		ConversionProgressListener listener =
+		    new ConversionProgressListener() {
+		    public void updateProgress (int percentDone)
+		    {
+			System.out.println("Percent done: " +
+					   percentDone + "%");
+		    }
+		};
+		ripper.ripTrack(info, track, "/tmp/track" + track + ".wav",
+				listener);
 	    }
 
 	} catch (Exception e) {

projects/robodj/src/java/robodj/convert/Ripper.java

@@ -1,5 +1,5 @@
 //
-// $Id: Ripper.java,v 1.2 2000/10/30 22:21:11 mdb Exp $
+// $Id: Ripper.java,v 1.3 2001/02/06 08:18:00 mdb Exp $
 
 package robodj.convert;
 
@@ -46,6 +46,8 @@ public interface Ripper
      * notification, it should communicate it to the supplied progress
      * listener. The track should be ripped in WAV format.
      *
+     * @param info the track info as returned by
+     * <code>getTrackInfo</code>. This is necessary to compute progress.
      * @param index the track number of the track to rip (starting at 1
      * since CDs start counting tracks at 1).
      * @param target the path to the file into which the track should be
@@ -58,7 +60,7 @@ public interface Ripper
      * trying to rip the specified track (like lack of access to the CDROM
      * device or any other errors).
      */
-    public void ripTrack (int index, String target,
+    public void ripTrack (TrackInfo[] info, int index, String target,
 			  ConversionProgressListener listener)
 	throws ConvertException;
 }