pwc-dec23.c File Reference

#include "pwc-timon.h"
#include "pwc-kiara.h"
#include "pwc-dec23.h"
#include <linux/string.h>
#include <linux/slab.h>

Go to the source code of this file.

Macros
#define	USE_LOOKUP_TABLE_TO_CLAMP   1
#define	UNROLL_LOOP_FOR_COPY   1
#define	USE_LOOKUP_TABLE_TO_CLAMP   1
#define	SCALEBITS   15
#define	ONE_HALF   (1UL << (SCALEBITS - 1))
#define	MAX_OUTER_CROP_VALUE   (512)
#define	CLAMP(x)   (pwc_crop_table[MAX_OUTER_CROP_VALUE+(x)])
#define	fill_nbits(pdec, nbits_wanted)
#define	skip_nbits(pdec, nbits_to_skip)
#define	get_nbits(pdec, nbits_wanted, result)
#define	__get_nbits(pdec, nbits_wanted, result)
#define	look_nbits(pdec, nbits_wanted)   ((pdec->reservoir) & ((1U<<(nbits_wanted))-1))

Functions
void	pwc_dec23_init (struct pwc_device *pdev, const unsigned char *cmd)
void	pwc_dec23_decompress (struct pwc_device *pdev, const void *src, void *dst)

Macro Definition Documentation

#define __get_nbits	(		pdec,
			nbits_wanted,
			result
	)

Value:

do { \
   result = (pdec->reservoir) & ((1U<<(nbits_wanted))-1); \
   skip_nbits(pdec, nbits_wanted); \
}  while(0);

Definition at line 488 of file pwc-dec23.c.

#define CLAMP

(

x

)

(pwc_crop_table[MAX_OUTER_CROP_VALUE+(x)])

Definition at line 290 of file pwc-dec23.c.

#define fill_nbits	(		pdec,
			nbits_wanted
	)

Value:

do { \
   while (pdec->nbits_in_reservoir<(nbits_wanted)) \
    { \
      pdec->reservoir |= (*(pdec->stream)++) << (pdec->nbits_in_reservoir); \
      pdec->nbits_in_reservoir += 8; \
    } \
}  while(0);

Definition at line 469 of file pwc-dec23.c.

#define get_nbits	(		pdec,
			nbits_wanted,
			result
	)

Value:

do { \
   fill_nbits(pdec, nbits_wanted); \
   result = (pdec->reservoir) & ((1U<<(nbits_wanted))-1); \
   skip_nbits(pdec, nbits_wanted); \
}  while(0);

Definition at line 482 of file pwc-dec23.c.

#define look_nbits	(		pdec,
			nbits_wanted
	)		((pdec->reservoir) & ((1U<<(nbits_wanted))-1))

Definition at line 493 of file pwc-dec23.c.

#define MAX_OUTER_CROP_VALUE   (512)

Definition at line 288 of file pwc-dec23.c.

#define ONE_HALF   (1UL << (SCALEBITS - 1))

#define SCALEBITS   15

#define skip_nbits	(		pdec,
			nbits_to_skip
	)

Value:

do { \
   pdec->reservoir >>= (nbits_to_skip); \
   pdec->nbits_in_reservoir -= (nbits_to_skip); \
}  while(0);

Definition at line 477 of file pwc-dec23.c.

#define UNROLL_LOOP_FOR_COPY   1

Definition at line 47 of file pwc-dec23.c.

#define USE_LOOKUP_TABLE_TO_CLAMP   1

Definition at line 50 of file pwc-dec23.c.

#define USE_LOOKUP_TABLE_TO_CLAMP   1

Definition at line 50 of file pwc-dec23.c.

Function Documentation

void pwc_dec23_decompress	(	struct pwc_device *	pdev,
		const void *	src,
		void *	dst
	)

Uncompress a pwc23 buffer.

src: raw data dst: image output

Definition at line 658 of file pwc-dec23.c.

void pwc_dec23_init	(	struct pwc_device *	pdev,
		const unsigned char *	cmd
	)

Definition at line 297 of file pwc-dec23.c.