From: David ‘Bombe’ Roden <bombe@pterodactylus.net>
Date: Fri, 15 Mar 2013 22:51:39 +0000 (+0100)
Subject: Add LAME MP3 decoder.
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=85754e2a030dbff1245499f408c67ef154197fc4;p=sonitus.git

Add LAME MP3 decoder.
---

diff --git a/src/main/java/net/pterodactylus/sonitus/data/filter/LameMp3Decoder.java b/src/main/java/net/pterodactylus/sonitus/data/filter/LameMp3Decoder.java
new file mode 100644
index 0000000..d824041
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sonitus/data/filter/LameMp3Decoder.java
@@ -0,0 +1,64 @@
+/*
+ * Sonitus - LameMp3Decoder.java - Copyright © 2013 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sonitus.data.filter;
+
+import com.google.common.collect.ImmutableList;
+
+/**
+ * {@link ExternalMp3Decoder} implementation that uses LAME to decode an MP3.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class LameMp3Decoder extends ExternalMp3Decoder {
+
+	/**
+	 * Creates a new LAME MP3 decoder.
+	 *
+	 * @param binary
+	 * 		The location of the binary
+	 * @param swapBytes
+	 * 		{@code true} to swap the decoded bytes, {@code false} to use platform
+	 * 		endianness
+	 */
+	public LameMp3Decoder(String binary, boolean swapBytes) {
+		super(binary, generateParameters(swapBytes));
+	}
+
+	//
+	// STATIC METHODS
+	//
+
+	/**
+	 * Generates the parameters for LAME.
+	 *
+	 * @param swapBytes
+	 * 		{@code true} to swap the decoded bytes, {@code false} to use platform
+	 * 		endianness
+	 * @return The parameters for LAME
+	 */
+	private static Iterable<String> generateParameters(boolean swapBytes) {
+		ImmutableList.Builder parameters = ImmutableList.builder();
+		parameters.add("--mp3input").add("--decode").add("-t");
+		if (swapBytes) {
+			parameters.add("-x");
+		}
+		parameters.add("-").add("-");
+		return parameters.build();
+	}
+
+}