/*
    This file is part of MacPaint Format, a File Format plugin for Adobe Photoshop
    Copyright (C) 2003-6 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
*/

#include "entry.h" // must come after Photoshop includes

#include "bufio.h"
#include "macpaint.h"

MACPASCAL void ENTRYPOINT(short selector,FormatRecordPtr pb,long *data,short *result);

DLLEXPORT 
MACPASCAL void ENTRYPOINT(short selector,FormatRecordPtr pb,long *data,short *result){
	OSErr e = noErr;
	
	EnterCodeResource();
	
	/* Perform the requested operation */

//	if(!*data)
//		*data = (long)malloc(sizeof(struct globals));
		
	switch (selector){
	case formatSelectorAbout: 
		DoAbout((AboutRecordPtr)pb); 
		break;

	case formatSelectorEstimatePrepare:
	case formatSelectorWritePrepare:
		pb->maxData = 4L<<10; // nominal memory requirement
		break;
	case formatSelectorReadPrepare:
		pb->maxData = (long)PNTG_ROWS*PNTG_ROWBYTES /* size of uncompressed MacPaint image */
			+ (4L<<10); /* slop */
		break;

	case formatSelectorReadStart:    e = read_start(pb,data); break;
	case formatSelectorReadContinue: e = read_continue(pb,data); break;
	case formatSelectorReadFinish:   e = read_finish(pb,data); break;

	case formatSelectorOptionsPrepare:
		pb->maxData = 0; // no buffers are allocated in Options 
		break;

	case formatSelectorEstimateStart:
		pb->minDataBytes = PNTG_HEADERSIZE + PNTG_ROWS*2;
		pb->maxDataBytes = PNTG_HEADERSIZE + PNTG_ROWS*(PNTG_ROWBYTES+1);
	case formatSelectorOptionsStart:
	case formatSelectorEstimateContinue:
	case formatSelectorOptionsContinue:
		pb->data = 0;
	case formatSelectorEstimateFinish:
	case formatSelectorOptionsFinish:
		break;

	case formatSelectorWriteStart:    e = write_start(pb,data); break;
	case formatSelectorWriteContinue: e = write_continue(pb,data); break;
	case formatSelectorWriteFinish:   e = write_finish(pb,data); break;

	case formatSelectorFilterFile: break;

	default: 
		e = formatBadParameters;
	}

	*result = e;
	
	ExitCodeResource();
}