Write the first bytes to the buffer correctly.

[sonitus.git] / src / main / java / net / pterodactylus / sonitus / io / mp3 / Parser.java

diff --git a/src/main/java/net/pterodactylus/sonitus/io/mp3/Parser.java b/src/main/java/net/pterodactylus/sonitus/io/mp3/Parser.java
index eb2b441..55165d8 100644 (file)
--- a/src/main/java/net/pterodactylus/sonitus/io/mp3/Parser.java
+++ b/src/main/java/net/pterodactylus/sonitus/io/mp3/Parser.java
@@ -27,6 +27,8 @@ import com.google.common.io.ByteStreams;
 /**
  * A parser for MP3 files. It can recognize (and skip) ID3v2 header tags and
  * MPEG audio frames.
+ * <p/>
+ * This uses information from <a href="http://mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm">mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm</a>.
  *
  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  */
@@ -51,16 +53,16 @@ public class Parser {
         */
        public Parser(InputStream inputStream) throws IOException {
                this.inputStream = inputStream;
-               readFully(inputStream, buffer, 0, 3);
-               if ((buffer[0] == 'I') && (buffer[1] == 'D') && (buffer[2] == '3')) {
-                       readFully(inputStream, buffer, 0, 3);
+               readFully(inputStream, buffer, 1, 3);
+               if ((buffer[1] == 'I') && (buffer[2] == 'D') && (buffer[3] == '3')) {
+                       readFully(inputStream, buffer, 1, 3);
                        byte[] lengthBuffer = new byte[4];
                        readFully(inputStream, lengthBuffer, 0, 4);
                        int headerLength = (lengthBuffer[0] << 21) | (lengthBuffer[1] << 14) | (lengthBuffer[2] << 7) | lengthBuffer[3];
                        id3Tag = new byte[headerLength + 10];
-                       System.arraycopy(new byte[] { 'I', 'D', '3', buffer[0], buffer[1], buffer[2], lengthBuffer[0], lengthBuffer[1], lengthBuffer[2], lengthBuffer[3] }, 0, id3Tag, 0, 10);
+                       System.arraycopy(new byte[] { 'I', 'D', '3', buffer[1], buffer[2], buffer[3], lengthBuffer[0], lengthBuffer[1], lengthBuffer[2], lengthBuffer[3] }, 0, id3Tag, 0, 10);
                        readFully(inputStream, id3Tag, 10, headerLength);
-                       readFully(inputStream, buffer, 0, 3);
+                       readFully(inputStream, buffer, 1, 3);
                } else {
                        id3Tag = null;
                }