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2b455db6 LS |
1 | /* Linux driver for Philips webcam |
2 | (C) 2004-2006 Luc Saillard (luc@saillard.org) | |
3 | ||
4 | NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx | |
5 | driver and thus may have bugs that are not present in the original version. | |
6 | Please send bug reports and support requests to <luc@saillard.org>. | |
7 | The decompression routines have been implemented by reverse-engineering the | |
8 | Nemosoft binary pwcx module. Caveat emptor. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | 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 General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | */ | |
24 | ||
25 | #ifndef PWC_DEC23_H | |
26 | #define PWC_DEC23_H | |
27 | ||
28 | #include "pwc.h" | |
29 | ||
30 | struct pwc_dec23_private | |
31 | { | |
32 | unsigned int scalebits; | |
33 | unsigned int nbitsmask, nbits; /* Number of bits of a color in the compressed stream */ | |
34 | ||
35 | unsigned int reservoir; | |
36 | unsigned int nbits_in_reservoir; | |
37 | const unsigned char *stream; | |
38 | int temp_colors[16]; | |
39 | ||
40 | unsigned char table_0004_pass1[16][1024]; | |
41 | unsigned char table_0004_pass2[16][1024]; | |
42 | unsigned char table_8004_pass1[16][256]; | |
43 | unsigned char table_8004_pass2[16][256]; | |
44 | unsigned int table_subblock[256][12]; | |
45 | ||
46 | unsigned char table_bitpowermask[8][256]; | |
47 | unsigned int table_d800[256]; | |
48 | unsigned int table_dc00[256]; | |
49 | ||
50 | }; | |
51 | ||
52 | ||
53 | int pwc_dec23_alloc(struct pwc_device *pwc); | |
54 | int pwc_dec23_init(struct pwc_device *pwc, int type, unsigned char *cmd); | |
55 | void pwc_dec23_exit(void); | |
56 | void pwc_dec23_decompress(const struct pwc_device *pwc, | |
57 | const void *src, | |
58 | void *dst, | |
59 | int flags); | |
60 | ||
61 | ||
62 | ||
63 | #endif | |
64 | ||
65 | ||
66 | /* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */ | |
67 |