2 * Sonitus - OggVorbisDecoder.java - Copyright © 2013 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package net.pterodactylus.sonitus.data.filter;
20 import net.pterodactylus.sonitus.data.ConnectException;
21 import net.pterodactylus.sonitus.data.Metadata;
22 import net.pterodactylus.sonitus.data.Source;
24 import com.google.common.base.Preconditions;
25 import com.google.common.collect.ImmutableList;
28 * Ogg Vorbis decoder that uses {@code oggdec} (from the {@code vorbis-tools}
29 * package) to decode the Ogg Vorbis stream.
31 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
33 public class OggVorbisDecoder extends ExternalFilter {
35 /** The location of the binary. */
36 private final String binary;
38 /** Whether to swap bytes. */
39 private boolean swapBytes;
42 * Creates a new Ogg Vorbis decoder.
45 * The location of the binary
47 public OggVorbisDecoder(String binary) {
52 * Sets whether to swap bytes on the decoded output.
55 * {@code true} to swap bytes on the decoded output, {@code false} otherwise
56 * @return This Ogg Vorbis decoder
58 public OggVorbisDecoder swapBytes(boolean swapBytes) {
59 this.swapBytes = swapBytes;
68 public Metadata metadata() {
69 return super.metadata().encoding("PCM");
73 public void connect(Source source) throws ConnectException {
74 Preconditions.checkNotNull(source, "source must not be null");
75 Preconditions.checkArgument(source.metadata().encoding().equalsIgnoreCase("Vorbis"), "source must be Vorbis-encoded");
77 super.connect(source);
81 // EXTERNALFILTER METHODS
85 protected String binary(Metadata metadata) {
90 protected Iterable<String> parameters(Metadata metadata) {
91 ImmutableList.Builder<String> parameters = ImmutableList.builder();
94 parameters.add("-e").add("1");
96 parameters.add("-o").add("-");
98 return parameters.build();