summaryrefslogtreecommitdiff
path: root/songdbj/org/tritonus/lowlevel/pogg/Page.java
diff options
context:
space:
mode:
Diffstat (limited to 'songdbj/org/tritonus/lowlevel/pogg/Page.java')
-rw-r--r--songdbj/org/tritonus/lowlevel/pogg/Page.java298
1 files changed, 0 insertions, 298 deletions
diff --git a/songdbj/org/tritonus/lowlevel/pogg/Page.java b/songdbj/org/tritonus/lowlevel/pogg/Page.java
deleted file mode 100644
index 3f89d7166e..0000000000
--- a/songdbj/org/tritonus/lowlevel/pogg/Page.java
+++ /dev/null
@@ -1,298 +0,0 @@
1/*
2 * Page.java
3 *
4 * This file is part of Tritonus: http://www.tritonus.org/
5 */
6
7/*
8 * Copyright (c) 2000 - 2001 by Matthias Pfisterer
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU Library General Public License as published
12 * by the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Library General Public License for more details.
19 *
20 * You should have received a copy of the GNU Library General Public
21 * License along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25/*
26|<--- this code is formatted to fit into 80 columns --->|
27*/
28
29package org.tritonus.lowlevel.pogg;
30
31import org.tritonus.share.TDebug;
32
33
34
35/** Wrapper for ogg_page.
36 */
37public class Page
38{
39 private static final int[] crc_lookup =
40 {
41 0x00000000,0x04c11db7,0x09823b6e,0x0d4326d9,
42 0x130476dc,0x17c56b6b,0x1a864db2,0x1e475005,
43 0x2608edb8,0x22c9f00f,0x2f8ad6d6,0x2b4bcb61,
44 0x350c9b64,0x31cd86d3,0x3c8ea00a,0x384fbdbd,
45 0x4c11db70,0x48d0c6c7,0x4593e01e,0x4152fda9,
46 0x5f15adac,0x5bd4b01b,0x569796c2,0x52568b75,
47 0x6a1936c8,0x6ed82b7f,0x639b0da6,0x675a1011,
48 0x791d4014,0x7ddc5da3,0x709f7b7a,0x745e66cd,
49 0x9823b6e0,0x9ce2ab57,0x91a18d8e,0x95609039,
50 0x8b27c03c,0x8fe6dd8b,0x82a5fb52,0x8664e6e5,
51 0xbe2b5b58,0xbaea46ef,0xb7a96036,0xb3687d81,
52 0xad2f2d84,0xa9ee3033,0xa4ad16ea,0xa06c0b5d,
53 0xd4326d90,0xd0f37027,0xddb056fe,0xd9714b49,
54 0xc7361b4c,0xc3f706fb,0xceb42022,0xca753d95,
55 0xf23a8028,0xf6fb9d9f,0xfbb8bb46,0xff79a6f1,
56 0xe13ef6f4,0xe5ffeb43,0xe8bccd9a,0xec7dd02d,
57 0x34867077,0x30476dc0,0x3d044b19,0x39c556ae,
58 0x278206ab,0x23431b1c,0x2e003dc5,0x2ac12072,
59 0x128e9dcf,0x164f8078,0x1b0ca6a1,0x1fcdbb16,
60 0x018aeb13,0x054bf6a4,0x0808d07d,0x0cc9cdca,
61 0x7897ab07,0x7c56b6b0,0x71159069,0x75d48dde,
62 0x6b93dddb,0x6f52c06c,0x6211e6b5,0x66d0fb02,
63 0x5e9f46bf,0x5a5e5b08,0x571d7dd1,0x53dc6066,
64 0x4d9b3063,0x495a2dd4,0x44190b0d,0x40d816ba,
65 0xaca5c697,0xa864db20,0xa527fdf9,0xa1e6e04e,
66 0xbfa1b04b,0xbb60adfc,0xb6238b25,0xb2e29692,
67 0x8aad2b2f,0x8e6c3698,0x832f1041,0x87ee0df6,
68 0x99a95df3,0x9d684044,0x902b669d,0x94ea7b2a,
69 0xe0b41de7,0xe4750050,0xe9362689,0xedf73b3e,
70 0xf3b06b3b,0xf771768c,0xfa325055,0xfef34de2,
71 0xc6bcf05f,0xc27dede8,0xcf3ecb31,0xcbffd686,
72 0xd5b88683,0xd1799b34,0xdc3abded,0xd8fba05a,
73 0x690ce0ee,0x6dcdfd59,0x608edb80,0x644fc637,
74 0x7a089632,0x7ec98b85,0x738aad5c,0x774bb0eb,
75 0x4f040d56,0x4bc510e1,0x46863638,0x42472b8f,
76 0x5c007b8a,0x58c1663d,0x558240e4,0x51435d53,
77 0x251d3b9e,0x21dc2629,0x2c9f00f0,0x285e1d47,
78 0x36194d42,0x32d850f5,0x3f9b762c,0x3b5a6b9b,
79 0x0315d626,0x07d4cb91,0x0a97ed48,0x0e56f0ff,
80 0x1011a0fa,0x14d0bd4d,0x19939b94,0x1d528623,
81 0xf12f560e,0xf5ee4bb9,0xf8ad6d60,0xfc6c70d7,
82 0xe22b20d2,0xe6ea3d65,0xeba91bbc,0xef68060b,
83 0xd727bbb6,0xd3e6a601,0xdea580d8,0xda649d6f,
84 0xc423cd6a,0xc0e2d0dd,0xcda1f604,0xc960ebb3,
85 0xbd3e8d7e,0xb9ff90c9,0xb4bcb610,0xb07daba7,
86 0xae3afba2,0xaafbe615,0xa7b8c0cc,0xa379dd7b,
87 0x9b3660c6,0x9ff77d71,0x92b45ba8,0x9675461f,
88 0x8832161a,0x8cf30bad,0x81b02d74,0x857130c3,
89 0x5d8a9099,0x594b8d2e,0x5408abf7,0x50c9b640,
90 0x4e8ee645,0x4a4ffbf2,0x470cdd2b,0x43cdc09c,
91 0x7b827d21,0x7f436096,0x7200464f,0x76c15bf8,
92 0x68860bfd,0x6c47164a,0x61043093,0x65c52d24,
93 0x119b4be9,0x155a565e,0x18197087,0x1cd86d30,
94 0x029f3d35,0x065e2082,0x0b1d065b,0x0fdc1bec,
95 0x3793a651,0x3352bbe6,0x3e119d3f,0x3ad08088,
96 0x2497d08d,0x2056cd3a,0x2d15ebe3,0x29d4f654,
97 0xc5a92679,0xc1683bce,0xcc2b1d17,0xc8ea00a0,
98 0xd6ad50a5,0xd26c4d12,0xdf2f6bcb,0xdbee767c,
99 0xe3a1cbc1,0xe760d676,0xea23f0af,0xeee2ed18,
100 0xf0a5bd1d,0xf464a0aa,0xf9278673,0xfde69bc4,
101 0x89b8fd09,0x8d79e0be,0x803ac667,0x84fbdbd0,
102 0x9abc8bd5,0x9e7d9662,0x933eb0bb,0x97ffad0c,
103 0xafb010b1,0xab710d06,0xa6322bdf,0xa2f33668,
104 0xbcb4666d,0xb8757bda,0xb5365d03,0xb1f740b4
105 };
106
107
108 private byte[] m_abHeader;
109 private int m_nHeaderLength;
110 private byte[] m_abBody;
111 private int m_nBodyLength;
112
113
114 public Page()
115 {
116 if (TDebug.TraceOggNative) { TDebug.out("Page.<init>(): begin"); }
117 if (TDebug.TraceOggNative) { TDebug.out("Page.<init>(): end"); }
118 }
119
120
121
122 private native int malloc();
123
124 // TODO: remove calls to this method
125 public void free()
126 {
127 }
128
129
130 /** Calls ogg_page_version().
131 */
132 public int getVersion()
133 {
134 return m_abHeader[4] & 0xFF;
135 }
136
137
138 /** Calls ogg_page_continued().
139 */
140 public boolean isContinued()
141 {
142 return (m_abHeader[5] & 0x01) != 0;
143 }
144
145
146
147 /** Calls ogg_page_packets().
148 */
149/* returns the number of packets that are completed on this page (if
150 the leading packet is begun on a previous page, but ends on this
151 page, it's counted */
152
153/* NOTE:
154If a page consists of a packet begun on a previous page, and a new
155packet begun (but not completed) on this page, the return will be:
156 ogg_page_packets(page) ==1,
157 ogg_page_continued(page) !=0
158
159If a page happens to be a single packet that was begun on a
160previous page, and spans to the next page (in the case of a three or
161more page packet), the return will be:
162 ogg_page_packets(page) ==0,
163 ogg_page_continued(page) !=0
164*/
165 public int getPackets()
166 {
167 int n = m_abHeader[26] & 0xFF;
168 int count = 0;
169 for (int i = 0; i < n; i++)
170 if ((m_abHeader[27 + i] & 0xFF) < 255)
171 count++;
172 return count;
173 }
174
175
176
177 /** Calls ogg_page_bos().
178 */
179 public boolean isBos()
180 {
181 return (m_abHeader[5] & 0x02) != 0;
182 }
183
184
185
186 /** Calls ogg_page_eos().
187 */
188 public boolean isEos()
189 {
190 return (m_abHeader[5] & 0x04) != 0;
191 }
192
193
194
195 /** Calls ogg_page_granulepos().
196 */
197 public long getGranulePos()
198 {
199 long granulepos = m_abHeader[13]&(0xff);
200 granulepos = (granulepos<<8)|(m_abHeader[12] & 0xFF);
201 granulepos = (granulepos<<8)|(m_abHeader[11] & 0xFF);
202 granulepos = (granulepos<<8)|(m_abHeader[10] & 0xFF);
203 granulepos = (granulepos<<8)|(m_abHeader[9] & 0xFF);
204 granulepos = (granulepos<<8)|(m_abHeader[8] & 0xFF);
205 granulepos = (granulepos<<8)|(m_abHeader[7] & 0xFF);
206 granulepos = (granulepos<<8)|(m_abHeader[6] & 0xFF);
207 return granulepos;
208 }
209
210
211
212 /** Calls ogg_page_serialno().
213 */
214 public int getSerialNo()
215 {
216 return m_abHeader[14] |
217 (m_abHeader[15] << 8) |
218 (m_abHeader[16] << 16) |
219 (m_abHeader[17] << 24);
220 }
221
222
223
224 /** Calls ogg_page_pageno().
225 */
226 public int getPageNo()
227 {
228 return m_abHeader[18] |
229 (m_abHeader[19] << 8) |
230 (m_abHeader[20] << 16) |
231 (m_abHeader[21] << 24);
232 }
233
234
235
236 /** Calls ogg_page_checksum_set().
237 */
238 public void setChecksum()
239 {
240 int crc_reg = 0;
241
242 /* safety; needed for API behavior, but not framing code */
243 m_abHeader[22]=0;
244 m_abHeader[23]=0;
245 m_abHeader[24]=0;
246 m_abHeader[25]=0;
247
248 for(int i = 0; i < m_nHeaderLength; i++)
249 crc_reg = (crc_reg << 8) ^ crc_lookup[((crc_reg >>> 24) & 0xff) ^ (m_abHeader[i] & 0xFF)];
250 for(int i = 0; i < m_nBodyLength; i++)
251 crc_reg = (crc_reg << 8) ^ crc_lookup[((crc_reg >>> 24) & 0xff) ^ (m_abBody[i] & 0xFF)];
252
253 m_abHeader[22] = (byte) (crc_reg & 0xff);
254 m_abHeader[23] = (byte) ((crc_reg >> 8) & 0xff);
255 m_abHeader[24] = (byte) ((crc_reg >> 16) & 0xff);
256 m_abHeader[25] = (byte) ((crc_reg >> 24) & 0xff);
257 }
258
259
260
261
262 public byte[] getHeader()
263 {
264 byte[] abHeader = new byte[m_nHeaderLength];
265 System.arraycopy(m_abHeader, 0, abHeader, 0, m_nHeaderLength);
266 return abHeader;
267 }
268
269
270
271 public byte[] getBody()
272 {
273 byte[] abBody = new byte[m_nBodyLength];
274 System.arraycopy(m_abBody, 0, abBody, 0, m_nBodyLength);
275 return abBody;
276 }
277
278
279
280 public void setData(byte[] abHeader, int nHeaderOffset,
281 int nHeaderLength,
282 byte[] abBody, int nBodyOffset,
283 int nBodyLength)
284 {
285 m_abHeader = new byte[nHeaderLength];
286 System.arraycopy(abHeader, nHeaderOffset, m_abHeader, 0, nHeaderLength);
287 m_nHeaderLength = nHeaderLength;
288 m_abBody = new byte[nBodyLength];
289 System.arraycopy(abBody, nBodyOffset, m_abBody, 0, nBodyLength);
290 m_nBodyLength = nBodyLength;
291 }
292}
293
294
295
296
297
298/*** Page.java ***/
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-23 14:27:36 +0000