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Added encoder interface, fixed more stuff up.

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git-svn-id: https://samskivert.googlecode.com/svn/trunk@8 6335cc39-0255-0410-8fd6-9bcaacd3b74c
This commit is contained in:
mdb
2000-10-30 22:21:11 +00:00
parent a8785c1b4c
commit 57178fa35e
10 changed files with 232 additions and 51 deletions
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projects/robodj/src/java/robodj/convert/CDParanoiaRipper.java
+68 -22
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@@ -1,7 +1,7 @@
//
// $Id: CDParanoiaRipper.java,v 1.1 2000/10/30 21:08:53 mdb Exp $
// $Id: CDParanoiaRipper.java,v 1.2 2000/10/30 22:21:11 mdb Exp $
package robodj.rip;
package robodj.convert;
import java.io.*;
import java.util.ArrayList;
@@ -13,8 +13,20 @@ import gnu.regexp.*;
*/
public class CDParanoiaRipper implements Ripper
{
public TrackInfo[] getTrackInfo () throws RipException
public TrackInfo[] getTrackInfo ()
throws ConvertException
{
// an input line that we're interested in looks something like
// this:
//
// 1. 17980 [03:59.55] 0 [00:00.00] no no 2
RE regex;
try {
regex = new RE("^\\s*\\d+\\.\\s+(\\d+)\\s\\[\\S*\\]\\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();
@@ -28,13 +40,6 @@ public class CDParanoiaRipper implements Ripper
StringBuffer input = new StringBuffer();
ArrayList flist = new ArrayList();
// an input line that we're interested in looks something like
// this:
//
// 1. 17980 [03:59.55] 0 [00:00.00] no no 2
RE regex =
new RE("^\\s*\\d+\\.\\s+(\\d+)\\s\\[\\S*\\]\\s+(\\d+)");
while ((inline = din.readLine()) != null) {
// skip blank lines and lines that are in the header
if (inline.trim().length() == 0 ||
@@ -43,8 +48,6 @@ public class CDParanoiaRipper implements Ripper
continue;
}
// System.out.println("Matching: " + inline);
// keep track of all of the input in case we need to
// report an error later
input.append(inline).append("\n");
@@ -62,14 +65,14 @@ public class CDParanoiaRipper implements Ripper
int retval = tocproc.waitFor();
if (retval != 0) {
// ship off the error output from cdparanoia
throw new RipException(input.toString());
throw new ConvertException(input.toString());
}
} catch (InterruptedException ie) {
// why we were interrupted I can only speculate, but we'll
// go ahead and freak out anyway
throw new RipException("Interrupted while waiting for " +
"cdparanoia process to exit.");
throw new ConvertException("Interrupted while waiting for " +
"cdparanoia process to exit.");
}
// parse the frame offsets and stick them in an array
@@ -88,20 +91,63 @@ public class CDParanoiaRipper implements Ripper
frames[i].offset += 2 * RipUtil.FRAMES_PER_SECOND;
} catch (NumberFormatException nfe) {
throw new RipException("Bogus frame value for track " +
(i+1) + ": " + nfe.getMessage() +
"\n\n" + input);
throw new ConvertException(
"Bogus frame value for track " + (i+1) + ": " +
nfe.getMessage() + "\n\n" + input);
}
}
return frames;
} catch (REException ree) {
throw new RipException("Can't compile regular expression?! " +
ree);
} catch (IOException ioe) {
throw new ConvertException(
"Error communicating with ripper:\n" + ioe);
}
}
public void ripTrack (int index, String target,
RipProgressListener listener)
throws ConvertException
{
StringBuffer cmd = new StringBuffer("cdparanoia");
cmd.append(" -w"); // request output in WAV format
cmd.append(" -e"); // request progress information to stderr
cmd.append(" ").append(index); // add track number
cmd.append(" ").append(target); // add output file name
try {
// fork off a cdparanoia process to read the TOC
Runtime rt = Runtime.getRuntime();
Process ripproc = rt.exec(cmd.toString());
InputStream in = ripproc.getErrorStream();
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
}
// check the return value of the process
try {
int retval = ripproc.waitFor();
if (retval != 0) {
// ship off the error output from cdparanoia
throw new ConvertException(
"Ripper failed: " + retval);
}
} catch (InterruptedException ie) {
// why we were interrupted I can only speculate, but we'll
// go ahead and freak out anyway
throw new ConvertException("Interrupted while waiting for " +
"ripper process to exit.");
}
} catch (IOException ioe) {
throw new RipException("Error talking to rip process: " + ioe);
throw new ConvertException(
"Error communicating with ripper:\n" + ioe);
}
}
}
projects/robodj/src/java/robodj/convert/ConversionProgressListener.java
+22
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@@ -0,0 +1,22 @@
//
// $Id: ConversionProgressListener.java,v 1.1 2000/10/30 22:21:11 mdb Exp $
package robodj.convert;
/**
* This interface is used to communicate ripping progress from a ripper or
* encoder implementation to code using the conversion services (and
* hopefully ultimately to the end user).
*/
public interface ConversionProgressListener
{
/**
* Informs the listener that the converter has completed the specified
* percentage of the conversion process. The percentage should reflect
* only the conversion being performed by the converter at that time
* (ripping or converting a single track). The information provided
* 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);
}
projects/robodj/src/java/robodj/convert/ConvertException.java
+17
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@@ -0,0 +1,17 @@
//
// $Id: ConvertException.java,v 1.1 2000/10/30 22:21:11 mdb Exp $
package robodj.convert;
/**
* A convert exception can be thrown to indicate that some problem was
* encountered during some part of the conversion process (ripping or
* encoding).
*/
public class ConvertException extends Exception
{
public ConvertException (String message)
{
super(message);
}
}
projects/robodj/src/java/robodj/convert/Encoder.java
+28
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@@ -0,0 +1,28 @@
//
// $Id: Encoder.java,v 1.1 2000/10/30 22:21:11 mdb Exp $
package robodj.convert;
/**
* The encoder interface is used to manipulate particular MP3 encoding
* software in the ways needed by the RoboDJ system.
*/
public interface Encoder
{
/**
* Instructs the encoder to encode the specified track.
*
* @param source the path to the source file that should be encoded.
* @param dest the path to the destination file which should be
* created by the encoder.
* @param listener a callback object that should be called to
* communicate encoding progress. If the listener parameter is null,
* the caller doesn't want to hear about progress (shame on them).
*
* @exception ConvertException can be thrown if anything fails during
* the encoding process.
*/
public void encodeTrack (String source, String dest,
ConversionProgressListener listener)
throws ConvertException;
}
projects/robodj/src/java/robodj/convert/L3Encoder.java
+58
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@@ -0,0 +1,58 @@
//
// $Id: L3Encoder.java,v 1.1 2000/10/30 22:21:11 mdb Exp $
package robodj.convert;
import java.io.*;
/**
* An encoder implementation that uses the Fraunhofer-IIS L3ENC mp3
* encoding program.
*/
public class L3Encoder implements Encoder
{
public void encodeTrack (String source, String dest,
ConversionProgressListener listener)
throws ConvertException
{
StringBuffer cmd = new StringBuffer("l3enc");
cmd.append(" ").append(source); // add input file name
cmd.append(" ").append(dest); // add output file name
cmd.append(" -br 128000"); // request 128kbps encoding
try {
// fork off a cdparanoia process to read the TOC
Runtime rt = Runtime.getRuntime();
Process encproc = rt.exec(cmd.toString());
InputStream in = encproc.getErrorStream();
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
}
// check the return value of the process
try {
int retval = encproc.waitFor();
if (retval != 0) {
// ship off the error output from cdparanoia
throw new ConvertException(
"Encoder failed: " + retval);
}
} catch (InterruptedException ie) {
// why we were interrupted I can only speculate, but we'll
// go ahead and freak out anyway
throw new ConvertException("Interrupted while waiting for " +
"encoder process to exit.");
}
} catch (IOException ioe) {
throw new ConvertException(
"Error communicating with encoder:\n" + ioe);
}
}
}
projects/robodj/src/java/robodj/convert/Makefile
+5 -2
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@@ -1,11 +1,14 @@
#
# $Id: Makefile,v 1.1 2000/10/30 21:08:53 mdb Exp $
# $Id: Makefile,v 1.2 2000/10/30 22:21:11 mdb Exp $
ROOT = ../..
SRCS = \
CDParanoiaRipper.java \
RipException.java \
ConversionProgressListener.java \
ConvertException.java \
Encoder.java \
L3Encoder.java \
RipTest.java \
RipUtil.java \
Ripper.java \
projects/robodj/src/java/robodj/convert/RipException.java
-16
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@@ -1,16 +0,0 @@
//
// $Id: RipException.java,v 1.1 2000/10/30 21:08:53 mdb Exp $
package robodj.rip;
/**
* A rip exception can be thrown to indicate that some problem was
* encountered during some part of the ripping process.
*/
public class RipException extends Exception
{
public RipException (String message)
{
super(message);
}
}
projects/robodj/src/java/robodj/convert/RipTest.java
+2 -2
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@@ -1,7 +1,7 @@
//
// $Id: RipTest.java,v 1.1 2000/10/30 21:08:53 mdb Exp $
// $Id: RipTest.java,v 1.2 2000/10/30 22:21:11 mdb Exp $
package robodj.rip;
package robodj.convert;
import com.samskivert.net.cddb.*;
projects/robodj/src/java/robodj/convert/RipUtil.java
+2 -2
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@@ -1,7 +1,7 @@
//
// $Id: RipUtil.java,v 1.1 2000/10/30 21:08:53 mdb Exp $
// $Id: RipUtil.java,v 1.2 2000/10/30 22:21:11 mdb Exp $
package robodj.rip;
package robodj.convert;
/**
* This class contains utility functions related to ripping.
projects/robodj/src/java/robodj/convert/Ripper.java
+30 -7
View File
@@ -1,11 +1,11 @@
//
// $Id: Ripper.java,v 1.1 2000/10/30 21:08:53 mdb Exp $
// $Id: Ripper.java,v 1.2 2000/10/30 22:21:11 mdb Exp $
package robodj.rip;
package robodj.convert;
/**
* The ripper interface is used to manipulate a particular piece of CD
* ripping software in the ways needed by the RoboDJ system.
* The ripper interface is used to manipulate particular CD ripping
* software in the ways needed by the RoboDJ system.
*/
public interface Ripper
{
@@ -33,9 +33,32 @@ public interface Ripper
* seconds to do its job or it will be declared delinquent and
* ignored.
*
* @exception RipException can be thrown if some problem occurs trying
* to read the CD table of contents (like lack of access to the CDROM
* @exception ConvertException can be thrown if some problem occurs
* trying to read the CD table of contents (like lack of access to the
* CDROM device or any other errors).
*/
public TrackInfo[] getTrackInfo ()
throws ConvertException;
/**
* Instructs the ripper to rip the track with the supplied index into
* the file specified by target. If the ripper supports progress
* notification, it should communicate it to the supplied progress
* listener. The track should be ripped in WAV format.
*
* @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
* ripped.
* @param listener a callback object that should be called to
* communicate ripping progress. If the listener parameter is null,
* the caller doesn't want to hear about progress (shame on them).
*
* @exception ConvertException can be thrown if some problem occurs
* trying to rip the specified track (like lack of access to the CDROM
* device or any other errors).
*/
public TrackInfo[] getTrackInfo () throws RipException;
public void ripTrack (int index, String target,
ConversionProgressListener listener)
throws ConvertException;
}