From: David ‘Bombe’ Roden <bombe@pterodactylus.net>
Date: Fri, 24 May 2013 21:12:22 +0000 (+0200)
Subject: Add FLAC decoder filter.
X-Git-Url: https://git.pterodactylus.net/?p=sonitus.git;a=commitdiff_plain;h=344a255dd954f9d69aada430ad00bee5624a4281

Add FLAC decoder filter.
---

diff --git a/src/main/java/net/pterodactylus/sonitus/data/filter/FlacDecoder.java b/src/main/java/net/pterodactylus/sonitus/data/filter/FlacDecoder.java
new file mode 100644
index 0000000..cbb2698
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sonitus/data/filter/FlacDecoder.java
@@ -0,0 +1,78 @@
+/*
+ * Sonitus - FlacDecoder.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 net.pterodactylus.sonitus.data.Metadata;
+
+import com.google.common.collect.ImmutableList;
+
+/**
+ * Decoder {@link net.pterodactylus.sonitus.data.Filter} for FLAC files.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class FlacDecoder extends ExternalFilter {
+
+	/** The location of the binary. */
+	private final String binary;
+
+	/** Whether to swap the bytes. */
+	private boolean swapBytes;
+
+	/**
+	 * Creates a new FLAC decoder.
+	 *
+	 * @param binary
+	 * 		The location of the binary
+	 */
+	public FlacDecoder(String binary) {
+		this.binary = binary;
+	}
+
+	//
+	// EXTERNALFILTER METHODS
+	//
+
+	@Override
+	protected String binary(Metadata metadata) {
+		return binary;
+	}
+
+	@Override
+	protected Iterable<String> parameters(Metadata metadata) {
+		ImmutableList.Builder<String> parameters = ImmutableList.builder();
+
+		parameters.add("--decode");
+		parameters.add("--stdout");
+		parameters.add("--silent");
+		parameters.add("--output-name=-");
+		parameters.add("--force-raw-format");
+		if (swapBytes) {
+			parameters.add("--endian=little");
+		} else {
+			parameters.add("--endian=big");
+		}
+		parameters.add(String.format("--channels=%d", metadata.channels()));
+		parameters.add("--bps=16");
+		parameters.add(String.format("--sample-rate=%d", metadata.frequency()));
+		parameters.add("--sign=signed");
+
+		return parameters.build();
+	}
+
+}