/* Princed V3 - Prince of Persia Level Editor for PC Version
Copyright (C) 2003 Princed Development Team
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
The authors of this program may be contacted at http://forum.princed.com.ar
*/
/*
autodetect.c: Princed Resources : Automatic detection resource types
������������
Copyright 2003 Princed Development Team
Created: 24 Aug 2003
Author: Enrique Calot <ecalot.cod@princed.com.ar>
Version: 1.01 (2003-Oct-23)
Note:
DO NOT remove this copyright notice
*/
/***************************************************************\
| I M P L E M E N T A T I O N |
\***************************************************************/
#include "autodetect.h"
#include "auxiliary.h"
/***************************************************************\
| Item Type Detector |
\***************************************************************/
int verifyPop1LevelHeader(tBinary c) {
return (((c.size==2305)||(c.size==2304)));/* &&!(c.data[1697]&0x0F)&&!(c.data[1699]&0x0F)&&!(c.data[1701]&0x0F));*/
}
int verifyPop2LevelHeader(tBinary c) {
return (c.size==12025);
}
int verifyImage16Header(tBinary c) {
unsigned char imageBitRate;
if (c.size<=7) return 0; /* false */
imageBitRate=(( (c.data[5])>>4 ) & 7)+1;
return (c.size>7) && ((c.data[4])==0) && (imageBitRate==4);
/* NOTE:
* imageBitRate==1
* works for monochrome images (but is very common and matches more than that)
*/
}
int verifyImage256Header(tBinary c) {
unsigned char imageBitRate;
if (c.size<=7) return 0; /* false */
imageBitRate=(( (c.data[5])>>4 ) & 7)+1;
return (c.size>7) && ((c.data[4])==1) && (imageBitRate==8);
/* NOTE:
* imageBitRate==1
* works for monochrome images (but is very common and matches more than that)
*/
}
int verifyPaletteHeaderPop1(tBinary c) {
return (
((c.size==100)&&(!c.data[1])&&(!c.data[2])&&(c.data[3]==0x10))
);
}
int verifyPaletteHeaderPop2(tBinary c) {
return (
(c.size>=(3*16)) &&
/* (c.data[0]==0x00) &&
(c.data[1]==0x00) &&
(c.data[2]==0x00) &&*/
(c.size % 3 == 0 ) &&
isA64kPalette(c)
);
}
int verifySpeakerHeader(tBinary c) {
/* format: (checksum)+(0x00)+(even number)+3 bytes per note */
return
(c.size>4)&&(c.data[0]==0x00)&&(!(c.data[1]%2))&&(!(c.size%3))
;
}
int verifyWaveHeader(tBinary c) {
/* format: (checksum)+(0x01)+raw wave */
return
(c.size>1)&&(c.data[0]==0x01)&&((c.size%3)==2) /* TODO: use WAVE_MAGIC */
;
}
int verifyMidiHeader(tBinary c) {
/* format: (checksum)+(0x02)+"MThd"... */
return
(c.size>6) &&
(c.data[0]==0x02) && /* magicMidi */
(c.data[1]=='M') &&
(c.data[2]=='T') &&
(c.data[3]=='h') &&
(c.data[4]=='d')
;
}
tResourceType verifyHeader(tBinary c) { /* TODO: add the pop version as another parameter to detect types */
if (verifyPop1LevelHeader (c)) return eResTypeLevelPop1;
if (verifyPop2LevelHeader (c)) return eResTypeLevelPop2;
if (verifyMidiHeader (c)) return eResTypeSoundMidi;
if (verifyImage16Header (c)) return eResTypeImage16;
if (verifyImage256Header (c)) return eResTypeImage256;
if (verifyPaletteHeaderPop1 (c)) return eResTypePalettePop1_16;
if (verifyPaletteHeaderPop2 (c)) return eResTypePalettePop2_NColors;
if (verifyWaveHeader (c)) return eResTypeSoundWave;
if (verifySpeakerHeader (c)) return eResTypeSoundPcspeaker;
return eResTypeOtherBinary;
}