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/*
author: unknown, probably bitmaster?
slightly modified by dbalster
*/
#include "generic.h"
#ifndef XADECODE_H
#define XADECODE_H
#define USE_FXD 1
#define kNumOfSamples 224
#define kNumOfSGs 18
#define XAFile 0
#define XAChannel 1
#define XAType 2
#define XAFlags 3
/* bits in XAFlags byte */
#define XAFStereo 1<<0
#define XAFHalfHz 1<<2
#define XAAUDIO 0x64
#define XAVIDEO 0x48
#define XABREAK 0xE4
#define XACURRENT 0x100 /* for application use only! */
#define XANONE 0x200 /* for application use only! */
#define XAAV 0x400 /* for application use only! */
#ifndef max
#define max(a,b) (a<b?b:a)
#define min(a,b) (a>b?b:a)
#endif
#define FXD_FxdToPCM(dt) (max(min((short)((dt)>>16), 32767), -32768))
#define DblToPCM(dt) (short)(max(min((dt), 32767), -32768))
#define WHP_READ68_AUTO(fp, dt) WHP_Read68(dt, sizeof(*(dt)), 1, fp)
#define WHP_WRITE68_AUTO(fp, dt) WHP_Write68(dt, sizeof(*(dt)), 1, fp)
#define WHP_CNV_SHORT68(dt, ndt) WHP_CnvEndianShort((dt), (ndt))
#define WHP_CNV_LONG68(dt, ndt) WHP_CnvEndianLong((dt), (ndt))
#if USE_FXD
#define FXD_FxdToPcm16(dt) (max(min((dt)/2, 32767), -32768))
#define FXD_Pcm16ToFxd(dt) ((long)dt*2)
#endif
#define XAWAVBUFSIZE (kNumOfSamples*kNumOfSGs*2)
typedef char SoundGroup[128];
typedef struct SoundSector {
char sectorFiller[8];
SoundGroup SoundGroups[kNumOfSGs];
} PACKED SoundSector;
typedef unsigned long DWORD;
typedef unsigned short WORD;
#if USE_FXD
typedef long FXD;
#endif
#ifdef __cplusplus
extern "C" {
#endif
long decodeSoundSect(SoundSector *ssct, char *wav);
long decodeSoundSect1(SoundSector *ssct, char *wav);
long convXaToWave(char *adp, char *wav, int cn, int fn_s, int fn_e);
void initXaDecode(void);
void switchXaDecode(int channel);
void saveXaDecode(int channel);
void reinitXaDecode(int channel);
signed char getSoundData(char *buf, long unit, long sample);
signed char getFilter(char *buf, long unit);
signed char getRange(char *buf, long unit);
char xachannel(SoundSector *ss);
unsigned char xatype(SoundSector *ss);
char xafileno(SoundSector *ss);
char xastereo(SoundSector *ss);
char xahalfhz(SoundSector *ss);
#if USE_FXD
FXD FXD_FixMul(FXD a, FXD b);
#endif
#ifdef __cplusplus
}
#endif
#endif
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