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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/* Linux driver for Philips webcam3 (C) 2004-2006 Luc Saillard (luc@saillard.org)4 5 NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx6 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 the9 Nemosoft binary pwcx module. Caveat emptor.10 11*/12 13#ifndef PWC_DEC23_H14#define PWC_DEC23_H15 16struct pwc_device;17 18struct pwc_dec23_private19{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#endif50