aifc_decode.c File Reference

#include <unistd.h>
#include <assert.h>
#include <math.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>

Data Structures
struct	ChunkHeader
struct	Chunk
struct	CommonChunk
struct	Marker
struct	Loop
struct	InstrumentChunk
struct	SoundDataChunk
struct	CodeChunk
struct	ALADPCMloop

Macros
#define	bswap16(x)   __builtin_bswap16(x)
#define	bswap32(x)   __builtin_bswap32(x)
#define	BSWAP16(x)   x = __builtin_bswap16(x)
#define	BSWAP32(x)   x = __builtin_bswap32(x)
#define	BSWAP16_MANY(x, n)   for (s32 _i = 0; _i < n; _i++) BSWAP16((x)[_i])
#define	NORETURN   __attribute__((noreturn))
#define	UNUSED   __attribute__((unused))
#define	checked_fread(a, b, c, d)   if (fread(a, b, c, d) != c) fail_parse("error parsing file")

Typedefs
typedef signed char	s8
	Bruteforcing decoder for converting ADPCM-encoded AIFC into AIFF, in a way that roundtrips with vadpcm_enc. More...
typedef short	s16
typedef int	s32
typedef unsigned char	u8
typedef unsigned short	u16
typedef unsigned int	u32
typedef unsigned long long	u64
typedef float	f32

Functions
NORETURN void	fail_parse (const char *fmt,...)
s32	myrand ()
s16	qsample (s32 x, s32 scale)
s16	clamp_to_s16 (s32 x)
s32	toi4 (s32 x)
s32	readaifccodebook (FILE *fhandle, s32 ****table, s16 *order, s16 *npredictors)
ALADPCMloop *	readlooppoints (FILE *ifile, s16 *nloops)
s32	inner_product (s32 length, s32 *v1, s32 *v2)
void	my_decodeframe (u8 *frame, s32 *state, s32 order, s32 ***coefTable)
void	my_encodeframe (u8 *out, s16 *inBuffer, s32 *state, s32 ***coefTable, s32 order, s32 npredictors)
void	permute (s16 *out, s32 *in, s32 scale)
void	write_header (FILE *ofile, const char *id, s32 size)
int	main (int argc, char **argv)

Variables
static char	usage [] = "input.aifc output.aiff"
static const char *	progname
static const char *	infilename

Macro Definition Documentation

bswap16

#define bswap16

(

x

)

__builtin_bswap16(x)

BSWAP16

#define BSWAP16

(

x

)

x = __builtin_bswap16(x)

BSWAP16_MANY

#define BSWAP16_MANY	(		x,
			n
	)		for (s32 _i = 0; _i < n; _i++) BSWAP16((x)[_i])

bswap32

#define bswap32

(

x

)

__builtin_bswap32(x)

BSWAP32

#define BSWAP32

(

x

)

x = __builtin_bswap32(x)

checked_fread

#define checked_fread	(		a,
			b,
			c,
			d
	)		if (fread(a, b, c, d) != c) fail_parse("error parsing file")

NORETURN

#define NORETURN   __attribute__((noreturn))

UNUSED

#define UNUSED   __attribute__((unused))

Typedef Documentation

f32

typedef float f32

s16

typedef short s16

s32

typedef int s32

s8

typedef signed char s8

Bruteforcing decoder for converting ADPCM-encoded AIFC into AIFF, in a way that roundtrips with vadpcm_enc.

u16

typedef unsigned short u16

u32

typedef unsigned int u32

u64

typedef unsigned long long u64

u8

typedef unsigned char u8

Function Documentation

clamp_to_s16()

s16 clamp_to_s16

(

s32

x

)

fail_parse()

NORETURN void fail_parse	(	const char *	fmt,
			...
	)

inner_product()

s32 inner_product	(	s32	length,
		s32 *	v1,
		s32 *	v2
	)

main()

int main	(	int	argc,
		char **	argv
	)

my_decodeframe()

void my_decodeframe	(	u8 *	frame,
		s32 *	state,
		s32	order,
		s32 ***	coefTable
	)

my_encodeframe()

void my_encodeframe	(	u8 *	out,
		s16 *	inBuffer,
		s32 *	state,
		s32 ***	coefTable,
		s32	order,
		s32	npredictors
	)

myrand()

s32 myrand

(

)

permute()

void permute	(	s16 *	out,
		s32 *	in,
		s32	scale
	)

qsample()

s16 qsample	(	s32	x,
		s32	scale
	)

readaifccodebook()

s32 readaifccodebook	(	FILE *	fhandle,
		s32 ****	table,
		s16 *	order,
		s16 *	npredictors
	)

readlooppoints()

ALADPCMloop* readlooppoints	(	FILE *	ifile,
		s16 *	nloops
	)

toi4()

s32 toi4

(

s32

x

)

write_header()

void write_header	(	FILE *	ofile,
		const char *	id,
		s32	size
	)

Variable Documentation

infilename

const char * infilename

static

progname

const char* progname

static

usage

char usage[] = "input.aifc output.aiff"

static