/*
 * OmniPlay, v0.98
 * by David Champion
 *
 * format identifiers and data structures
 * 29 Aug 92
 */


#include <exec/types.h>

/***********
* IFF-8SVX *
***********/
/*typedef LONG	ID;*/

#define WordAlign(size)	((size+1)&~1)

#define MakeID(a,b,c,d)	( (LONG)(a)<<24L | (LONG)(b)<<16L | (c)<<8 | (d) )

struct ChunkHeader {
	LONG	ckID;
	LONG	ckSize;
};

#define ID_FORM		MakeID('F','O','R','M')	/* iff req'd */
#define ID_8SVX		MakeID('8','S','V','X') /* iff req'd */
#define ID_VHDR		MakeID('V','H','D','R') /* iff req'd */
#define ID_NAME		MakeID('N','A','M','E') /* iff opt'l */
#define ID_COPY		MakeID('(','c',')',' ') /* iff opt'l */
#define ID_AUTH		MakeID('A','U','T','H') /* iff opt'l */
#define ID_ANNO		MakeID('A','N','N','O') /* iff opt'l */
#define ID_BODY		MakeID('B','O','D','Y') /* iff req'd */
#define ID_NULL		0L			/* No ID */

#define sCmpNone	0	/* not compressed */
#define sCmpFibDelta	1	/* Fibonacci-delta encoding (Appendix C) */
#define sCmpPPacked	1<<7	/* nonstandard: PowerPacked BODY */
				/* Could be more kinds in the future. */
struct Voice8Header {
	ULONG	oneShotHiSamples;	/* # samples in the high octave 1-shot part */
	ULONG	repeatHiSamples;	/* # samples in the high octave repeat part */
	ULONG	samplesPerHiCycle;	/* # samples/cycle in high octave, else 0 */
	UWORD	samplesPerSec;		/* data sampling rate */
	UBYTE	ctOctave;		/* # of octaves of waveforms */
	UBYTE	sCompression;		/* data compression technique used */
	LONG	volume;			/* playback nominal volume from 0 to Unity */
};


/*******
* AIFF *
*******/
#define ID_AIFF		MakeID('A','I','F','F')
#define ID_COMM		MakeID('C','O','M','M')
#define ID_SSND		MakeID('S','S','N','D')
#define ID_COMT		MakeID('C','O','M','T')

struct CommonChunk {
	UWORD	numChannels;
	ULONG	numSampleFrames;
	UWORD	sampleSize;
	UBYTE	sampleRate[10];		/* typed as Extended in official documentation */
};


/*****************
* Creative Voice *
*****************/
#define ID_VOCH		MakeID('C','r','e','a')

/* This is very bad.  Wish I had a decent spec. */
/* Wish VOC were never spawned.  I hate this.   */
/* Never mind, we'll do it Mike's way.          */
//struct VocHdr {
//	char	ID[18];
//	char	EOFTag;
//	UWORD	Block1Offset;
//	UBYTE	MinVersion;
//	UBYTE	MajVersion;
//	UBYTE	MinVersionInv;
//	UBYTE	MajVersionInv;
//};
//struct VocBlockHdr {
//	UBYTE	Type;
//	UBYTE	Size3[3];
//	UBYTE	Info;
//}


/***********
* RIFF-WAV *
***********/
#define ID_RIFF		MakeID('R','I','F','F')
#define ID_WAVE		MakeID('W','A','V','E')
#define ID_fmt_		MakeID('f','m','t',' ')
#define ID_data		MakeID('d','a','t','a')
#define ID_INFO		MakeID('I','N','F','O')
#define ID_IARL		MakeID('I','A','R','L')
#define ID_IART		MakeID('I','A','R','T')
#define ID_ICMT		MakeID('I','C','M','T')
#define ID_ICOP		MakeID('I','C','O','P')
#define ID_IENG		MakeID('I','E','N','G')
#define ID_IGNR		MakeID('I','G','N','R')
#define ID_INAM		MakeID('I','N','A','M')
#define ID_IPRD		MakeID('I','P','R','D')
#define ID_ISBJ		MakeID('I','S','B','J')
#define ID_ISFT		MakeID('I','S','F','T')
#define ID_ITCH		MakeID('I','T','C','H')

struct WaveCommon {
	UWORD	wFormatTag;
	UWORD	wChannels;
	ULONG	dwSamplesPerSec;
	ULONG	dwAvgBytesPerSec;
	UWORD	wBlockAlign;
};


/******************
* Sun/NeXT  (.au) *
******************/
#define ID__SND		MakeID('.','s','n','d')
#define SND_FORMAT_MULAW_8	1L
#define SND_FORMAT_LINEAR_8	2L
#define SND_FORMAT_LINEAR_16	3L

struct SNDSoundStruct {
	ULONG	magic;
	ULONG	dataLocation;
	ULONG	dataSize;
	ULONG	dataFormat;
	ULONG	samplingRate;
	ULONG	channelCount;
	char	info[4];
};


/*******************
* PowerPacked file *
*******************/
#define ID_PP20		MakeID('P','P','2','0')