/*
    This file is part of PSPFormat, a File Format plugin for Adobe Photoshop
    Copyright (C) 2003-7 Toby Thain, toby@telegraphics.com.au

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by  
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License  
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/* PSP File Format Specification is Copyright (C) 2000 Jasc Software, Inc.
   See http://www.jasc.com/specs/psp.asp */

#ifdef WIN32
	#include <windows.h>
#else
	#include "wintypes.h"
#endif

#include "psp7constants.h"
#include "psp7structures.h"
#include "file_io.h"

#if defined(MAC_ENV) || defined(WIN_ENV) || defined(__MWERKS__)
	#include "dbg.h"
	#include "ui.h"
	#define BAD alert
	#define PRINTF 
	#define DPRINTF 
	#define INFO 
#else
	/* probably building under UNIX */
	#define BAD bad
	#define PRINTF printf
	#define DPRINTF
	#define INFO puts
#endif

#define PAD1(bits) ( ((bits)+7)/8 )
#define PAD4(bits) ( (((bits)+31)/8) & -4 )

enum{ RLE_MAXRUN = 127 };

OSErr readvarstr(FILEREF r, char *p, int max);
OSErr writevarstr(FILEREF r, char *p);
OSErr readrectL(FILEREF r, RECT *pr);
OSErr writerectL(FILEREF r, RECT *pr);
OSErr skip(FILEREF r, long n);

long rle_compress(unsigned char *src, unsigned char *dst, long n);
long rle_count(unsigned char *src, long n);
void rle_expand(unsigned char *indata, long bytesin, unsigned char *outdata, long bytesout);

OSErr psp_read_file_header(FILEREF r, PSP_file_header *h);
OSErr psp_write_file_header(FILEREF r, PSP_file_header *h);
OSErr psp_read_block_header(FILEREF r, int vers, PSP_block_header *bh);
OSErr psp_write_block_header(FILEREF r, int vers, PSP_block_header *bh);
OSErr write_block(FILEREF f, int vers, WORD block_id, DWORD initial_len, DWORD block_len);
OSErr psp_read_image_attr_chunk(FILEREF r, int vers, PSP_image_attr_chunk *c);
OSErr psp_write_image_attr_chunk(FILEREF r, int vers, PSP_image_attr_chunk *c);
OSErr psp5_read_thumbnail_attr_chunk(FILEREF r, PSP5_thumbnail_attr_chunk *c);
OSErr psp_read_layer_info_chunk(FILEREF r, int vers, PSP_layer_info_chunk *c);
OSErr psp_write_layer_info_chunk(FILEREF r, int vers, PSP_layer_info_chunk *c);
OSErr psp7_read_layer_bitmap_chunk(FILEREF r, PSP7_layer_bitmap_chunk *c);
OSErr psp7_write_layer_bitmap_chunk(FILEREF r, PSP7_layer_bitmap_chunk *c);
OSErr psp_read_channel_info_chunk(FILEREF r, int vers, PSP_channel_info_chunk *c);
OSErr psp_write_channel_info_chunk(FILEREF r, int vers, PSP_channel_info_chunk *c);
//OSErr psp_blockdump(FILEREF f,PSP7_file_header *h);
OSErr psp_layer(FILEREF f,
		PSP_file_header *h,
		PSP_image_attr_chunk *gia, 
		PSP_layer_info_chunk *li,
		PSP_channel_info_chunk channels[],
		PSP_alpha_channel_info_chunk **alphainfo,
		PSP_palette_info_chunk *pi,
		RGBQUAD **palette);
OSErr compress_channel(FILEREF f, int comptype, unsigned char *p, long nrows, long rowbytes, long *output);
OSErr psp_channel(FILEREF f, PSP_image_attr_chunk *gia, PSP_channel_info_chunk *ci, 
		unsigned char *outptr, long uncompsize);
OSErr psp_block(FILEREF f,
		PSP_file_header *h,
		PSP_image_attr_chunk *gia, 
		PSP_layer_info_chunk **layers,
		PSP_channel_info_chunk channels[],
		PSP_alpha_channel_info_chunk **alphainfo,
		PSP_palette_info_chunk *pi,
		RGBQUAD **palette);
OSErr psp_read_palette_info_chunk(FILEREF r, int vers, PSP_palette_info_chunk *c);
OSErr psp_write_palette_info_chunk(FILEREF r, int vers, PSP_palette_info_chunk *c);
OSErr psp_read_alpha_bank_info_chunk(FILEREF r, int vers, PSP_alpha_bank_info_chunk *c);
OSErr psp_write_alpha_bank_info_chunk(FILEREF r, int vers, PSP_alpha_bank_info_chunk *c);
OSErr psp_read_alpha_channel_info_chunk(FILEREF r, int vers, PSP_alpha_channel_info_chunk *c);
OSErr psp_write_alpha_channel_info_chunk(FILEREF r, int vers, PSP_alpha_channel_info_chunk *c);
OSErr psp7_read_alpha_channel_chunk(FILEREF r, PSP7_alpha_channel_chunk *c);
OSErr psp7_write_alpha_channel_chunk(FILEREF r, PSP7_alpha_channel_chunk *c);

void dump_block_header(PSP_block_header *bh);
void dump_image_attr(PSP_image_attr_chunk *gia);
void dump_layer_info(PSP_layer_info_chunk *li);
void dump_layer_bitmap(PSP7_layer_bitmap_chunk *lb);
void dump_thumbnail_attr(PSP5_thumbnail_attr_chunk *ta);
void dump_channel_info(PSP_channel_info_chunk *ci);