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/**************************************************************************/
/* */
/* Copyright (c) 2001, 2009 NoMachine, http://www.nomachine.com/. */
/* */
/* NXCOMP, NX protocol compression and NX extensions to this software */
/* are copyright of NoMachine. Redistribution and use of the present */
/* software is allowed according to terms specified in the file LICENSE */
/* which comes in the source distribution. */
/* */
/* Check http://www.nomachine.com/licensing.html for applicability. */
/* */
/* NX and NoMachine are trademarks of Medialogic S.p.A. */
/* */
/* All rights reserved. */
/* */
/**************************************************************************/
#ifndef Unpack_H
#define Unpack_H
#include "NXpack.h"
#include "Z.h"
#define LSBFirst 0
#define MSBFirst 1
#define SPLIT_PATTERN 0x88
typedef ColorMask T_colormask;
//
// Pixel geometry of channel's display.
//
typedef struct
{
unsigned int depth1_bpp;
unsigned int depth4_bpp;
unsigned int depth8_bpp;
unsigned int depth16_bpp;
unsigned int depth24_bpp;
unsigned int depth32_bpp;
unsigned int red_mask;
unsigned int green_mask;
unsigned int blue_mask;
unsigned int image_byte_order;
unsigned int bitmap_bit_order;
unsigned int scanline_unit;
unsigned int scanline_pad;
} T_geometry;
//
// Colormap is used to remap colors
// from source to destination depth.
//
typedef struct
{
unsigned int entries;
unsigned int *data;
} T_colormap;
//
// Alpha channel data is added to 32
// bits images at the time they are
// unpacked.
//
typedef struct
{
unsigned int entries;
unsigned char *data;
} T_alpha;
//
// The ZLIB stream structure used for
// the decompression.
//
extern z_stream unpackStream;
//
// Initialize the ZLIB stream used for
// decompression.
//
void UnpackInit();
//
// Free the ZLIB stream.
//
void UnpackDestroy();
//
// Get the destination bits per pixel
// based on the drawable depth.
//
int UnpackBitsPerPixel(T_geometry *geometry, unsigned int depth);
//
// Unpack the source data into the X
// bitmap.
//
int Unpack8(T_geometry *geometry, const T_colormask *colormask, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack16(T_geometry *geometry, const T_colormask *colormask, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack24(T_geometry *geometry, const T_colormask *colormask, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack8(T_geometry *geometry, T_colormap *colormap, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack15(T_geometry *geometry, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack16(T_geometry *geometry, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
int Unpack24(T_geometry *geometry, int src_depth, int src_width,
int src_height, unsigned char *src_data, int src_size, int dst_depth,
int dst_width, int dst_height, unsigned char *dst_data, int dst_size);
#endif /* Unpack_H */
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