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author | Michiel Van Der Kolk <not.valid@email.address> | 2005-07-11 15:42:37 +0000 |
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committer | Michiel Van Der Kolk <not.valid@email.address> | 2005-07-11 15:42:37 +0000 |
commit | 9fee0ec4ca0c5b7a334cc29dbb58e76c7a4c736e (patch) | |
tree | 4c304cd4151020bd5494d279ee68a105ae3a5a3a /songdbj/org/tritonus/share/sampled/file/TAudioOutputStream.java | |
parent | dfa8ecbe609ca8ea194d08560a44fb9a92e94b4b (diff) | |
download | rockbox-9fee0ec4ca0c5b7a334cc29dbb58e76c7a4c736e.tar.gz rockbox-9fee0ec4ca0c5b7a334cc29dbb58e76c7a4c736e.zip |
Songdb java version, source. only 1.5 compatible
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7101 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'songdbj/org/tritonus/share/sampled/file/TAudioOutputStream.java')
-rw-r--r-- | songdbj/org/tritonus/share/sampled/file/TAudioOutputStream.java | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/songdbj/org/tritonus/share/sampled/file/TAudioOutputStream.java b/songdbj/org/tritonus/share/sampled/file/TAudioOutputStream.java new file mode 100644 index 0000000000..e54316c0a6 --- /dev/null +++ b/songdbj/org/tritonus/share/sampled/file/TAudioOutputStream.java | |||
@@ -0,0 +1,197 @@ | |||
1 | /* | ||
2 | * TAudioOutputStream.java | ||
3 | * | ||
4 | * This file is part of Tritonus: http://www.tritonus.org/ | ||
5 | */ | ||
6 | |||
7 | /* | ||
8 | * Copyright (c) 2000 by Matthias Pfisterer | ||
9 | * | ||
10 | * | ||
11 | * This program is free software; you can redistribute it and/or modify | ||
12 | * it under the terms of the GNU Library General Public License as published | ||
13 | * by the Free Software Foundation; either version 2 of the License, or | ||
14 | * (at your option) any later version. | ||
15 | * | ||
16 | * This program is distributed in the hope that it will be useful, | ||
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
19 | * GNU Library General Public License for more details. | ||
20 | * | ||
21 | * You should have received a copy of the GNU Library General Public | ||
22 | * License along with this program; if not, write to the Free Software | ||
23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
24 | * | ||
25 | */ | ||
26 | |||
27 | /* | ||
28 | |<--- this code is formatted to fit into 80 columns --->| | ||
29 | */ | ||
30 | |||
31 | package org.tritonus.share.sampled.file; | ||
32 | |||
33 | import java.io.IOException; | ||
34 | |||
35 | import javax.sound.sampled.AudioFormat; | ||
36 | import javax.sound.sampled.AudioSystem; | ||
37 | |||
38 | import org.tritonus.share.TDebug; | ||
39 | |||
40 | |||
41 | /** | ||
42 | * Base class for classes implementing AudioOutputStream. | ||
43 | * | ||
44 | * @author Matthias Pfisterer | ||
45 | */ | ||
46 | |||
47 | public abstract class TAudioOutputStream | ||
48 | implements AudioOutputStream | ||
49 | { | ||
50 | private AudioFormat m_audioFormat; | ||
51 | private long m_lLength; // in bytes | ||
52 | private long m_lCalculatedLength; | ||
53 | private TDataOutputStream m_dataOutputStream; | ||
54 | private boolean m_bDoBackPatching; | ||
55 | private boolean m_bHeaderWritten; | ||
56 | |||
57 | |||
58 | |||
59 | protected TAudioOutputStream(AudioFormat audioFormat, | ||
60 | long lLength, | ||
61 | TDataOutputStream dataOutputStream, | ||
62 | boolean bDoBackPatching) | ||
63 | { | ||
64 | m_audioFormat = audioFormat; | ||
65 | m_lLength = lLength; | ||
66 | m_lCalculatedLength = 0; | ||
67 | m_dataOutputStream = dataOutputStream; | ||
68 | m_bDoBackPatching = bDoBackPatching; | ||
69 | m_bHeaderWritten = false; | ||
70 | } | ||
71 | |||
72 | |||
73 | |||
74 | public AudioFormat getFormat() | ||
75 | { | ||
76 | return m_audioFormat; | ||
77 | } | ||
78 | |||
79 | |||
80 | |||
81 | /** Gives length of the stream. | ||
82 | * This value is in bytes. It may be AudioSystem.NOT_SPECIFIED | ||
83 | * to express that the length is unknown. | ||
84 | */ | ||
85 | public long getLength() | ||
86 | { | ||
87 | return m_lLength; | ||
88 | } | ||
89 | |||
90 | |||
91 | |||
92 | /** Gives number of bytes already written. | ||
93 | */ | ||
94 | // IDEA: rename this to BytesWritten or something like that ? | ||
95 | public long getCalculatedLength() | ||
96 | { | ||
97 | return m_lCalculatedLength; | ||
98 | } | ||
99 | |||
100 | protected TDataOutputStream getDataOutputStream() | ||
101 | { | ||
102 | return m_dataOutputStream; | ||
103 | } | ||
104 | |||
105 | |||
106 | /** Writes audio data to the destination (file or output stream). | ||
107 | */ | ||
108 | // IDEA: use long? | ||
109 | public int write(byte[] abData, int nOffset, int nLength) | ||
110 | throws IOException | ||
111 | { | ||
112 | if (TDebug.TraceAudioOutputStream) | ||
113 | { | ||
114 | TDebug.out("TAudioOutputStream.write(): wanted length: " + nLength); | ||
115 | } | ||
116 | if (! m_bHeaderWritten) | ||
117 | { | ||
118 | writeHeader(); | ||
119 | m_bHeaderWritten = true; | ||
120 | } | ||
121 | // $$fb added | ||
122 | // check that total writes do not exceed specified length | ||
123 | long lTotalLength=getLength(); | ||
124 | if (lTotalLength!=AudioSystem.NOT_SPECIFIED && (m_lCalculatedLength+nLength)>lTotalLength) { | ||
125 | if (TDebug.TraceAudioOutputStream) { | ||
126 | TDebug.out("TAudioOutputStream.write(): requested more bytes to write than possible."); | ||
127 | } | ||
128 | nLength=(int) (lTotalLength-m_lCalculatedLength); | ||
129 | // sanity | ||
130 | if (nLength<0) { | ||
131 | nLength=0; | ||
132 | } | ||
133 | } | ||
134 | // TODO: throw an exception if nLength==0 ? (to indicate end of file ?) | ||
135 | if (nLength>0) { | ||
136 | m_dataOutputStream.write(abData, nOffset, nLength); | ||
137 | m_lCalculatedLength += nLength; | ||
138 | } | ||
139 | if (TDebug.TraceAudioOutputStream) | ||
140 | { | ||
141 | TDebug.out("TAudioOutputStream.write(): calculated (total) length: " + m_lCalculatedLength+" bytes = "+(m_lCalculatedLength/getFormat().getFrameSize())+" frames"); | ||
142 | } | ||
143 | return nLength; | ||
144 | } | ||
145 | |||
146 | |||
147 | |||
148 | /** Writes the header of the audio file. | ||
149 | */ | ||
150 | protected abstract void writeHeader() | ||
151 | throws IOException; | ||
152 | |||
153 | |||
154 | |||
155 | /** Closes the stream. | ||
156 | * This does write remaining buffered data to the destination, | ||
157 | * backpatch the header, if necessary, and closes the destination. | ||
158 | */ | ||
159 | public void close() | ||
160 | throws IOException | ||
161 | { | ||
162 | if (TDebug.TraceAudioOutputStream) | ||
163 | { | ||
164 | TDebug.out("TAudioOutputStream.close(): called"); | ||
165 | } | ||
166 | // flush? | ||
167 | if (m_bDoBackPatching) | ||
168 | { | ||
169 | if (TDebug.TraceAudioOutputStream) | ||
170 | { | ||
171 | TDebug.out("TAudioOutputStream.close(): patching header"); | ||
172 | } | ||
173 | patchHeader(); | ||
174 | } | ||
175 | m_dataOutputStream.close(); | ||
176 | } | ||
177 | |||
178 | |||
179 | |||
180 | protected void patchHeader() | ||
181 | throws IOException | ||
182 | { | ||
183 | TDebug.out("TAudioOutputStream.patchHeader(): called"); | ||
184 | // DO NOTHING | ||
185 | } | ||
186 | |||
187 | |||
188 | |||
189 | protected void setLengthFromCalculatedLength() | ||
190 | { | ||
191 | m_lLength = m_lCalculatedLength; | ||
192 | } | ||
193 | } | ||
194 | |||
195 | |||
196 | |||
197 | /*** TAudioOutputStream.java ***/ | ||