1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* Linux driver for Philips webcam
3   (C) 2004-2006 Luc Saillard (luc@saillard.org)
4
5   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
6   driver and thus may have bugs that are not present in the original version.
7   Please send bug reports and support requests to <luc@saillard.org>.
8   The decompression routines have been implemented by reverse-engineering the
9   Nemosoft binary pwcx module. Caveat emptor.
10
11*/
12
13#ifndef PWC_DEC23_H
14#define PWC_DEC23_H
15
16struct pwc_device;
17
18struct pwc_dec23_private
19{
20	struct mutex lock;
21
22	unsigned char last_cmd, last_cmd_valid;
23
24  unsigned int scalebits;
25  unsigned int nbitsmask, nbits; /* Number of bits of a color in the compressed stream */
26
27  unsigned int reservoir;
28  unsigned int nbits_in_reservoir;
29
30  const unsigned char *stream;
31  int temp_colors[16];
32
33  unsigned char table_0004_pass1[16][1024];
34  unsigned char table_0004_pass2[16][1024];
35  unsigned char table_8004_pass1[16][256];
36  unsigned char table_8004_pass2[16][256];
37  unsigned int  table_subblock[256][12];
38
39  unsigned char table_bitpowermask[8][256];
40  unsigned int  table_d800[256];
41  unsigned int  table_dc00[256];
42
43};
44
45void pwc_dec23_init(struct pwc_device *pdev, const unsigned char *cmd);
46void pwc_dec23_decompress(struct pwc_device *pdev,
47			  const void *src,
48			  void *dst);
49#endif
50