X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsonitus%2Fdata%2FMetadata.java;h=e99d3787a5c7fa548aa617290776e301dd50def7;hb=865e9a8fce99285dfd6c1efb6a01991076e1a773;hp=22fbb274c2fffdd5cff1f94a640043532b698669;hpb=ee261ec959322c6d1969aff67319559ba1480859;p=sonitus.git

diff --git a/src/main/java/net/pterodactylus/sonitus/data/Metadata.java b/src/main/java/net/pterodactylus/sonitus/data/Metadata.java
index 22fbb27..e99d378 100644
--- a/src/main/java/net/pterodactylus/sonitus/data/Metadata.java
+++ b/src/main/java/net/pterodactylus/sonitus/data/Metadata.java
@@ -20,10 +20,9 @@ package net.pterodactylus.sonitus.data;
 import com.google.common.base.Optional;
 
 /**
- * Metadata contains information about a source, e.g. the name of the content,
- * the artist performing it, dates, comments, URLs, etc. The {@link Format},
- * however, is not part of the metadata because a {@link Source} already exposes
- * it.
+ * Metadata contains information about a source, e.g. the number of channels,
+ * the frequency, the encoding, the name of the content, the artist performing
+ * it, dates, comments, URLs, etc.
  * <p/>
  * Metadata, once created, is immutable.
  *
@@ -31,6 +30,24 @@ import com.google.common.base.Optional;
  */
 public class Metadata {
 
+	/** Constant for an unknown number of channels. */
+	public static final int UNKNOWN_CHANNELS = -1;
+
+	/** Constant for an unknown frequency. */
+	public static final int UNKNOWN_FREQUENCY = -1;
+
+	/** Constant for an unknown metadata. */
+	public static final String UNKNOWN_ENCODING = "UNKNOWN";
+
+	/** The number of channels of this metadata. */
+	private final int channels;
+
+	/** The sampling frequency of this metadata. */
+	private final int frequency;
+
+	/** The encoding of this metadata. */
+	private final String encoding;
+
 	/** The artist performing the content. */
 	private final Optional<String> artist;
 
@@ -38,8 +55,8 @@ public class Metadata {
 	private final Optional<String> name;
 
 	/** Creates empty metadata. */
-	public Metadata() {
-		this(null, null);
+	public Metadata(int channels, int frequency, String encoding) {
+		this(channels, frequency, encoding, null, null);
 	}
 
 	/**
@@ -50,11 +67,81 @@ public class Metadata {
 	 * @param name
 	 * 		The name of the content (may be {@code null})
 	 */
-	private Metadata(String artist, String name) {
+	private Metadata(int channels, int frequency, String encoding, String artist, String name) {
+		this.channels = channels;
+		this.frequency = frequency;
+		this.encoding = encoding;
 		this.artist = Optional.fromNullable(artist);
 		this.name = Optional.fromNullable(name);
 	}
 
+	//
+	// ACCESSORS
+	//
+
+	/**
+	 * Returns the number of channels of this metadata.
+	 *
+	 * @return The number of channels of this metadata
+	 */
+	public int channels() {
+		return channels;
+	}
+
+	/**
+	 * Returns a metadata with the same parameters as this metadata and the given
+	 * number of channels.
+	 *
+	 * @param channels
+	 * 		The new number of channels
+	 * @return A new metadata with the given number of channels
+	 */
+	public Metadata channels(int channels) {
+		return new Metadata(channels, frequency, encoding, artist.orNull(), name.orNull());
+	}
+
+	/**
+	 * Returns the sampling frequency of this metadata.
+	 *
+	 * @return The sampling frequency of this metadata
+	 */
+	public int frequency() {
+		return frequency;
+	}
+
+	/**
+	 * Returns a new metadata with the same parameters as this metadata and the
+	 * given frequency.
+	 *
+	 * @param frequency
+	 * 		The new frequency
+	 * @return A new metadata with the given frequency
+	 */
+	public Metadata frequency(int frequency) {
+		return new Metadata(channels, frequency, encoding, artist.orNull(), name.orNull());
+	}
+
+	/**
+	 * Returns the encoding of this metadata
+	 *
+	 * @return The encoding of this metadata
+	 */
+	public String encoding() {
+		return encoding;
+	}
+
+	/**
+	 * Returns a new metadata with the same parameters as this metadata and the
+	 * given encoding.
+	 *
+	 * @param encoding
+	 * 		The new encoding
+	 * @return A new metadata with the given encoding
+	 */
+	public Metadata encoding(String encoding) {
+		return new Metadata(channels, frequency, encoding, artist.orNull(), name.orNull());
+	}
+
 	/**
 	 * Returns the artist, if any.
 	 *
@@ -73,7 +160,7 @@ public class Metadata {
 	 * @return New metadata with a changed artist
 	 */
 	public Metadata artist(String artist) {
-		return new Metadata(artist, this.artist.orNull());
+		return new Metadata(channels, frequency, encoding, artist, this.artist.orNull());
 	}
 
 	/**
@@ -94,7 +181,54 @@ public class Metadata {
 	 * @return New metadata with a changed name
 	 */
 	public Metadata name(String name) {
-		return new Metadata(name, this.name.orNull());
+		return new Metadata(channels, frequency, encoding, name, this.name.orNull());
+	}
+
+	//
+	// OBJECT METHODS
+	//
+
+	@Override
+	public int hashCode() {
+		int hashCode = (channels << 16) ^ frequency ^ encoding.toUpperCase().hashCode();
+		if (artist.isPresent()) {
+			hashCode ^= artist.get().hashCode();
+		}
+		if (name.isPresent()) {
+			hashCode ^= name.get().hashCode();
+		}
+		return hashCode;
+	}
+
+	@Override
+	public boolean equals(Object object) {
+		if ((object == null) || (getClass() != object.getClass())) {
+			return false;
+		}
+		Metadata metadata = (Metadata) object;
+		if ((metadata.channels != channels) || (metadata.frequency != frequency) || !metadata.encoding.equalsIgnoreCase(encoding())) {
+			return false;
+		}
+		if (artist.equals(metadata.artist)) {
+			return false;
+		}
+		if (name.equals(metadata.name)) {
+			return false;
+		}
+		return true;
+	}
+
+	@Override
+	public String toString() {
+		StringBuilder string = new StringBuilder();
+		string.append(String.format("%d Channel%s, %d Hz, %s:", channels, channels != 1 ? "s" : "", frequency, encoding));
+		if (artist.isPresent()) {
+			string.append(" Artist(").append(artist.get()).append(")");
+		}
+		if (name.isPresent()) {
+			string.append(" Name(").append(name.get()).append(")");
+		}
+		return string.toString();
 	}
 
 }