core.be.tarsos.dsp.util.AudioResourceUtils Maven / Gradle / Ivy
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/*
* _______ _____ _____ _____
* |__ __| | __ \ / ____| __ \
* | | __ _ _ __ ___ ___ ___| | | | (___ | |__) |
* | |/ _` | '__/ __|/ _ \/ __| | | |\___ \| ___/
* | | (_| | | \__ \ (_) \__ \ |__| |____) | |
* |_|\__,_|_| |___/\___/|___/_____/|_____/|_|
*
* -------------------------------------------------------------
*
* TarsosDSP is developed by Joren Six at IPEM, University Ghent
*
* -------------------------------------------------------------
*
* Info: http://0110.be/tag/TarsosDSP
* Github: https://github.com/JorenSix/TarsosDSP
* Releases: http://0110.be/releases/TarsosDSP/
*
* TarsosDSP includes modified source code by various authors,
* for credits and info, see README.
*
*/
package be.tarsos.dsp.util;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
/**
* Some utility functions to handle audio resources.
*
* @author Joren Six
*/
public class AudioResourceUtils {
private AudioResourceUtils() {
}
/**
* Returns a more practical audio resource name. E.g. if
* http://stream.com/stream.pls is given, the PLS-file is parsed and the
* first audio file is returned. It supports PLS, M3U, AXS and XSPF"
*
* @param inputResource
* The input resource, a file, URL, PLS-file or M3U-file.
*
* @return A more practical audio resource name.
*/
public static String sanitizeResource(String inputResource) {
if (inputResource.toLowerCase().endsWith("pls")) {
inputResource = parsePLS(inputResource);
} else if (inputResource.toLowerCase().endsWith("m3u")) {
inputResource = parseM3U(inputResource);
} else if (inputResource.toLowerCase().endsWith("asx")){
inputResource = parseASX(inputResource);
} else if (inputResource.toLowerCase().endsWith("xspf")){
inputResource = parseXSPF(inputResource);
}
return inputResource;
}
private static String parseXSPF(String inputResource){
String inputFile = "";
try {
String contents = readTextFromUrl(new URL(inputResource));
for (String line : contents.split("\n")) {
if (line.toLowerCase().contains("href")) {
String pattern = "(?i)(.*) .*";
inputFile = line.replaceAll(pattern, "$1");
break;
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
}
return inputFile;
}
private static String parseASX(String inputResource) {
String inputFile = "";
try {
String contents = readTextFromUrl(new URL(inputResource));
for (String line : contents.split("\n")) {
if (line.toLowerCase().contains("href")) {
String pattern = "(?i).*href=\"(.*)\".*";
inputFile = line.replaceAll(pattern, "$1");
break;
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
}
return inputFile;
}
/**
* Parses the PLS file and returns the first file name.
*
* @param inputUrl
* The input PLS file.
* @return The first file name in the PLS playlist.
*/
public static String parsePLS(String inputUrl) {
String inputFile = "";
try {
String plsContents = readTextFromUrl(new URL(inputUrl));
for (String line : plsContents.split("\n")) {
if (line.startsWith("File1=")) {
inputFile = line.replace("File1=", "").trim();
break;
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
}
return inputFile;
}
/**
* Parses the M3U file and returns the first file name.
*
* @param inputUrl
* The input M3U file.
* @return The first file name in the M3U play list.
*/
public static String parseM3U(String inputUrl) {
String inputFile = "";
try {
String plsContents = readTextFromUrl(new URL(inputUrl));
for (String line : plsContents.split("\n")) {
if (!line.trim().isEmpty() && !line.trim().startsWith("#")) {
inputFile = line.trim();
break;
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
}
return inputFile;
}
/**
* Return the text of the file with the given URL. E.g. if
* http://test.be/text.txt is given the contents of text.txt is returned.
*
* @param url
* The URL.
* @return The contents of the file.
*/
public static String readTextFromUrl(URL url) {
StringBuffer fubber = new StringBuffer();
try {
BufferedReader in = new BufferedReader(new InputStreamReader(
url.openStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
fubber.append(inputLine).append("\n");
}
in.close();
} catch (IOException exception) {
exception.printStackTrace();
}
return fubber.toString();
}
}