#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "aaruformat.h"
#include "log.h"

Functions
void *	aaruf_ecc_cd_init ()
	Initializes a Compact Disc ECC context.
bool	aaruf_ecc_cd_is_suffix_correct (void context, const uint8_t sector)
	Checks if the suffix (EDC/ECC) of a CD sector is correct (Mode 1).
bool	aaruf_ecc_cd_is_suffix_correct_mode2 (void context, const uint8_t sector)
	Checks if the suffix (EDC/ECC) of a CD sector is correct (Mode 2).
bool	aaruf_ecc_cd_check (void context, const uint8_t address, const uint8_t data, const uint32_t major_count, const uint32_t minor_count, const uint32_t major_mult, const uint32_t minor_inc, const uint8_t ecc, const int32_t address_offset, const int32_t data_offset, const int32_t ecc_offset)
	Checks the ECC of a CD sector.
void	aaruf_ecc_cd_write (void context, const uint8_t address, const uint8_t data, const uint32_t major_count, const uint32_t minor_count, const uint32_t major_mult, const uint32_t minor_inc, uint8_t ecc, const int32_t address_offset, const int32_t data_offset, const int32_t ecc_offset)
	Writes ECC for a CD sector.
void	aaruf_ecc_cd_write_sector (void context, const uint8_t address, const uint8_t data, uint8_t ecc, const int32_t address_offset, const int32_t data_offset, const int32_t ecc_offset)
	Writes ECC for a full CD sector (both P and Q ECC).
void	aaruf_cd_lba_to_msf (const int64_t pos, uint8_t minute, uint8_t second, uint8_t *frame)
	Converts a CD LBA (Logical Block Address) to MSF (Minute:Second:Frame) format.
void	aaruf_ecc_cd_reconstruct_prefix (uint8_t *sector, const uint8_t type, const int64_t lba)
	Reconstructs the prefix (sync, address, mode) of a CD sector.
void	aaruf_ecc_cd_reconstruct (void context, uint8_t sector, const uint8_t type)
	Reconstructs the EDC and ECC fields of a CD sector.
uint32_t	aaruf_edc_cd_compute (void context, uint32_t edc, const uint8_t src, int size, int pos)
	Computes the EDC (Error Detection Code) for a CD sector.

Function Documentation

◆ aaruf_cd_lba_to_msf()

void aaruf_cd_lba_to_msf	(	const int64_t	pos,
		uint8_t *	minute,
		uint8_t *	second,
		uint8_t *	frame )

Converts a CD LBA (Logical Block Address) to MSF (Minute:Second:Frame) format.

Parameters

pos	LBA position.
minute	Pointer to store the minute value.
second	Pointer to store the second value.
frame	Pointer to store the frame value.

Definition at line 374 of file ecc_cd.c.

References AARU_CALL, AARU_LOCAL, and TRACE.

Referenced by aaruf_ecc_cd_reconstruct_prefix().

◆ aaruf_ecc_cd_check()

bool aaruf_ecc_cd_check	(	void *	context,
		const uint8_t *	address,
		const uint8_t *	data,
		const uint32_t	major_count,
		const uint32_t	minor_count,
		const uint32_t	major_mult,
		const uint32_t	minor_inc,
		const uint8_t *	ecc,
		const int32_t	address_offset,
		const int32_t	data_offset,
		const int32_t	ecc_offset )

Checks the ECC of a CD sector.

Parameters

context	Pointer to the ECC context.
address	Pointer to the address field.
data	Pointer to the data field.
major_count	Number of major iterations.
minor_count	Number of minor iterations.
major_mult	Major multiplier.
minor_inc	Minor increment.
ecc	Pointer to the ECC field.
address_offset	Offset for the address field.
data_offset	Offset for the data field.
ecc_offset	Offset for the ECC field.

Returns: true if ECC is correct, false otherwise.

Definition at line 227 of file ecc_cd.c.

References AARU_CALL, AARU_EXPORT, CdEccContext::ecc_b_table, CdEccContext::ecc_f_table, CdEccContext::inited_edc, and TRACE.

Referenced by aaruf_ecc_cd_is_suffix_correct(), and aaruf_ecc_cd_is_suffix_correct_mode2().

◆ aaruf_ecc_cd_init()

void * aaruf_ecc_cd_init ( )

Initializes a Compact Disc ECC context.

Allocates and initializes a context for Compact Disc ECC calculations.

Returns: Pointer to the initialized CdEccContext structure, or NULL on failure.

Definition at line 35 of file ecc_cd.c.

References AARU_CALL, AARU_EXPORT, CdEccContext::ecc_b_table, CdEccContext::ecc_f_table, CdEccContext::edc_table, CdEccContext::inited_edc, and TRACE.

Referenced by aaruf_create(), and aaruf_open().

◆ aaruf_ecc_cd_is_suffix_correct()

bool aaruf_ecc_cd_is_suffix_correct	(	void *	context,
		const uint8_t *	sector )

Checks if the suffix (EDC/ECC) of a CD sector is correct (Mode 1).

Parameters

context	Pointer to the ECC context.
sector	Pointer to the sector data.

Returns: true if the suffix is correct, false otherwise.

Definition at line 101 of file ecc_cd.c.

References AARU_CALL, AARU_EXPORT, aaruf_ecc_cd_check(), aaruf_edc_cd_compute(), CdEccContext::inited_edc, and TRACE.

Referenced by aaruf_write_sector_long().

◆ aaruf_ecc_cd_is_suffix_correct_mode2()

bool aaruf_ecc_cd_is_suffix_correct_mode2	(	void *	context,
		const uint8_t *	sector )

Checks if the suffix (EDC/ECC) of a CD sector is correct (Mode 2).

Parameters

context	Pointer to the ECC context.
sector	Pointer to the sector data.

Returns: true if the suffix is correct, false otherwise.

Definition at line 165 of file ecc_cd.c.

References AARU_CALL, AARU_EXPORT, aaruf_ecc_cd_check(), aaruf_edc_cd_compute(), CdEccContext::inited_edc, and TRACE.

Referenced by aaruf_write_sector_long().

◆ aaruf_ecc_cd_reconstruct()

void aaruf_ecc_cd_reconstruct	(	void *	context,
		uint8_t *	sector,
		const uint8_t	type )

Reconstructs the EDC and ECC fields of a CD sector.

Parameters

context	Pointer to the ECC context.
sector	Pointer to the sector data (must be 2352 bytes).
type	Track type (mode).

Definition at line 459 of file ecc_cd.c.

References AARU_CALL, AARU_EXPORT, aaruf_ecc_cd_write_sector(), aaruf_edc_cd_compute(), CdMode1, CdMode2Form1, CdMode2Form2, CdEccContext::inited_edc, and TRACE.

Referenced by aaruf_read_sector_long().

◆ aaruf_ecc_cd_reconstruct_prefix()

void aaruf_ecc_cd_reconstruct_prefix	(	uint8_t *	sector,
		const uint8_t	type,
		const int64_t	lba )

Reconstructs the prefix (sync, address, mode) of a CD sector.

Parameters

sector	Pointer to the sector data (must be 2352 bytes).
type	Track type (mode).
lba	Logical Block Address.

Definition at line 392 of file ecc_cd.c.

References AARU_CALL, AARU_EXPORT, aaruf_cd_lba_to_msf(), CdMode1, CdMode2Form1, CdMode2Form2, CdMode2Formless, and TRACE.

Referenced by aaruf_read_sector_long().

◆ aaruf_ecc_cd_write()

void aaruf_ecc_cd_write	(	void *	context,
		const uint8_t *	address,
		const uint8_t *	data,
		const uint32_t	major_count,
		const uint32_t	minor_count,
		const uint32_t	major_mult,
		const uint32_t	minor_inc,
		uint8_t *	ecc,
		const int32_t	address_offset,
		const int32_t	data_offset,
		const int32_t	ecc_offset )

Writes ECC for a CD sector.

Parameters

context	Pointer to the ECC context.
address	Pointer to the address field.
data	Pointer to the data field.
major_count	Number of major iterations.
minor_count	Number of minor iterations.
major_mult	Major multiplier.
minor_inc	Minor increment.
ecc	Pointer to the ECC field to write.
address_offset	Offset for the address field.
data_offset	Offset for the data field.
ecc_offset	Offset for the ECC field.

Definition at line 293 of file ecc_cd.c.

References AARU_CALL, AARU_EXPORT, CdEccContext::ecc_b_table, CdEccContext::ecc_f_table, CdEccContext::inited_edc, and TRACE.

Referenced by aaruf_ecc_cd_write_sector().

◆ aaruf_ecc_cd_write_sector()

void aaruf_ecc_cd_write_sector	(	void *	context,
		const uint8_t *	address,
		const uint8_t *	data,
		uint8_t *	ecc,
		const int32_t	address_offset,
		const int32_t	data_offset,
		const int32_t	ecc_offset )

Writes ECC for a full CD sector (both P and Q ECC).

Parameters

context	Pointer to the ECC context.
address	Pointer to the address field.
data	Pointer to the data field.
ecc	Pointer to the ECC field to write.
address_offset	Offset for the address field.
data_offset	Offset for the data field.
ecc_offset	Offset for the ECC field.

Definition at line 352 of file ecc_cd.c.

References AARU_CALL, AARU_EXPORT, aaruf_ecc_cd_write(), and TRACE.

Referenced by aaruf_ecc_cd_reconstruct().

◆ aaruf_edc_cd_compute()

uint32_t aaruf_edc_cd_compute	(	void *	context,
		uint32_t	edc,
		const uint8_t *	src,
		int	size,
		int	pos )

Computes the EDC (Error Detection Code) for a CD sector.

Parameters

context	Pointer to the ECC context.
edc	Initial EDC value.
src	Pointer to the data to compute EDC over.
size	Number of bytes to process.
pos	Starting position in the data.

Returns: Computed EDC value.

Definition at line 547 of file ecc_cd.c.

References AARU_CALL, AARU_EXPORT, CdEccContext::edc_table, CdEccContext::inited_edc, and TRACE.

Referenced by aaruf_ecc_cd_is_suffix_correct(), aaruf_ecc_cd_is_suffix_correct_mode2(), aaruf_ecc_cd_reconstruct(), and aaruf_write_sector_long().

Functions

Function Documentation

◆ aaruf_cd_lba_to_msf()

◆ aaruf_ecc_cd_check()

◆ aaruf_ecc_cd_init()

◆ aaruf_ecc_cd_is_suffix_correct()

◆ aaruf_ecc_cd_is_suffix_correct_mode2()

◆ aaruf_ecc_cd_reconstruct()

◆ aaruf_ecc_cd_reconstruct_prefix()

◆ aaruf_ecc_cd_write()

◆ aaruf_ecc_cd_write_sector()

◆ aaruf_edc_cd_compute()