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49 lines
1.3 KiB
49 lines
1.3 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* Linux driver for Philips webcam |
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(C) 2004-2006 Luc Saillard ([email protected]) |
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NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx |
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driver and thus may have bugs that are not present in the original version. |
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Please send bug reports and support requests to <[email protected]>. |
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The decompression routines have been implemented by reverse-engineering the |
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Nemosoft binary pwcx module. Caveat emptor. |
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*/ |
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#ifndef PWC_DEC23_H |
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#define PWC_DEC23_H |
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struct pwc_device; |
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struct pwc_dec23_private |
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{ |
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struct mutex lock; |
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unsigned char last_cmd, last_cmd_valid; |
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unsigned int scalebits; |
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unsigned int nbitsmask, nbits; /* Number of bits of a color in the compressed stream */ |
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unsigned int reservoir; |
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unsigned int nbits_in_reservoir; |
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const unsigned char *stream; |
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int temp_colors[16]; |
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unsigned char table_0004_pass1[16][1024]; |
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unsigned char table_0004_pass2[16][1024]; |
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unsigned char table_8004_pass1[16][256]; |
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unsigned char table_8004_pass2[16][256]; |
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unsigned int table_subblock[256][12]; |
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unsigned char table_bitpowermask[8][256]; |
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unsigned int table_d800[256]; |
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unsigned int table_dc00[256]; |
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}; |
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void pwc_dec23_init(struct pwc_device *pdev, const unsigned char *cmd); |
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void pwc_dec23_decompress(struct pwc_device *pdev, |
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const void *src, |
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void *dst); |
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#endif
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