| Luc Saillard | 2b455db | 2006-04-24 10:29:46 -0300 | [diff] [blame] | 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 | |