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From: cvs at opencores.org<cvs@o...>
Date: Tue Jun 5 17:36:38 CEST 2007
Subject: [cvs-checkins] MODIFIED: jop ...
Date: 00/07/06 05:17:36

Added: jop/java/target/src/app/lego/utils AudioPlayback.java
TrivialFS.java
Log:
Adding the Lego Java Programs


Revision Changes Path
1.1 jop/java/target/src/app/lego/utils/AudioPlayback.java

http://www.opencores.org/cvsweb.shtml/jop/java/target/src/app/lego/utils/AudioPlayback.java?rev=1.1&content-type=text/x-cvsweb-markup

Index: AudioPlayback.java
===================================================================
package lego.utils;


import lego.lib.Speaker;
import util.Amd;

import com.jopdesign.sys.Const;
import com.jopdesign.sys.Native;

public class AudioPlayback
{
public static final int SIZE_OFFSET = 40;
public static final int DATA_OFFSET = 44;


/**
* Blocking.
* @param fileNumber Standard (PCM) WAVE file.
*/
public static void playFromTrivialFS(int fileNumber, int usPerSample)
{
// int size = TrivialFS.getFileSize(fileNumber);

int address = TrivialFS.getFileAddress(fileNumber);

int size = Amd.read(address+SIZE_OFFSET+0);
size |= Amd.read(address+SIZE_OFFSET+1) << 8;
size |= Amd.read(address+SIZE_OFFSET+2) << 16;
size |= Amd.read(address+SIZE_OFFSET+3) << 24;

int nextStop = Native.rd(Const.IO_US_CNT) + usPerSample;
int current;

for (int j = DATA_OFFSET; j < size; j++)
{
lego.lib.Speaker.write(Amd.read(address+DATA_OFFSET+j));
while ((current = Native.rd(Const.IO_US_CNT)) < nextStop);

nextStop += usPerSample;

// waitForNextPeriod();
}
}

}



1.1 jop/java/target/src/app/lego/utils/TrivialFS.java

http://www.opencores.org/cvsweb.shtml/jop/java/target/src/app/lego/utils/TrivialFS.java?rev=1.1&content-type=text/x-cvsweb-markup

Index: TrivialFS.java
===================================================================
package lego.utils;

import util.Amd;

public class TrivialFS
{
public static int getFileCount()
{
int index = -4;
int length = 0;
int count = 0;

while (true)
{
index += 4 + length;

length = Amd.read(index+0) << 24;
length |= Amd.read(index+1) << 16;
length |= Amd.read(index+2) << 8;
length |= Amd.read(index+3);

if (length != 0)
count++;
else
break;
}

return count;
}

public static int getFileAddress(int fileNumber)
{
int index = -4;
int length = 0; for (int i = 0; i <= fileNumber; i++) { index += 4 + length; length = Amd.read(index+0) << 24; length |= Amd.read(index+1) << 16; length |= Amd.read(index+2) << 8; length |= Amd.read(index+3); } return index + 4; } public static int getFileSize(int fileNumber) { int index = -4; int length = 0; for (int i = 0; i <= fileNumber; i++) { index += 4 + length; length = Amd.read(index+0) << 24; length |= Amd.read(index+1) << 16; length |= Amd.read(index+2) << 8; length |= Amd.read(index+3); } return length; } }