01: /*
02: * @(#)AudioStream.java 1.20 06/10/10
03: *
04: * Copyright 1990-2006 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License version
09: * 2 only, as published by the Free Software Foundation.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License version 2 for more details (a copy is
15: * included at /legal/license.txt).
16: *
17: * You should have received a copy of the GNU General Public License
18: * version 2 along with this work; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA
21: *
22: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
23: * Clara, CA 95054 or visit www.sun.com if you need additional
24: * information or have any questions.
25: *
26: */
27:
28: package sun.audio;
29:
30: import java.io.InputStream;
31: import java.io.DataInputStream;
32: import java.io.FilterInputStream;
33: import java.io.IOException;
34:
35: /**
36: * Convert an InputStream to an AudioStream.
37: *
38: * @version 1.16, 08/19/02
39: */
40: public class AudioStream extends FilterInputStream {
41: NativeAudioStream audioIn;
42:
43: public AudioStream(InputStream in) throws IOException {
44: super (in);
45: try {
46: audioIn = (new NativeAudioStream(in));
47: } catch (InvalidAudioFormatException e) {
48: // Not a native audio stream -- use a translator (if available).
49: // If not, let the exception bubble up.
50: audioIn = (new AudioTranslatorStream(in));
51: }
52: this .in = audioIn;
53: }
54:
55: /**
56: * A blocking read.
57: */
58: public int read(byte buf[], int pos, int len) throws IOException {
59: int count = 0;
60: while (count < len) {
61: int n = super .read(buf, pos + count, len - count);
62: if (n < 0) {
63: return count;
64: }
65: count += n;
66: Thread.currentThread().yield();
67: }
68: return count;
69: }
70:
71: /**
72: * Get the data.
73: */
74: public AudioData getData() throws IOException {
75: byte buffer[] = new byte[audioIn.getLength()];
76: int gotbytes = read(buffer, 0, audioIn.getLength());
77: close();
78: if (gotbytes != audioIn.getLength()) {
79: throw new IOException("audio data read error");
80: }
81: return new AudioData(buffer);
82: }
83:
84: public int getLength() {
85: return audioIn.getLength();
86: }
87: }
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