mtk-lk/app/mt_boot/mtransfer/sparse_state_machine.h

#ifndef 	_SPARSE_STATE_MACHINE_H_
#define 	_SPARSE_STATE_MACHINE_H_

#include "transfer.h"

#if defined(MTK_EMMC_SUPPORT) || defined(MTK_UFS_SUPPORT)
#define STORAGE_BLOCK_SIZE 	4096
#else
#define STORAGE_BLOCK_SIZE (nand_get_alignment())
#endif

typedef enum unsparse_wait_phase
{
	UNSPARSE_WAIT_SPARSE_HEADER,
	UNSPARSE_WAIT_CHUNK_HEADER,
	UNSPARSE_WAIT_CHUNK_DATA,
	UNSPARSE_WAIT_CHUNK_NOT_CARE,
	UNSPARSE_WAIT_CHUNK_FILL,
	UNSPARSE_WAIT_CHUNK_CRC,
} unsparse_phase_t;

typedef struct cache_ctx
{
	uint8* c_base;             //cache buffer base
	uint32 c_offset;             //cache buffer offset
	uint32 c_size;             //cache buffer size
} cache_ctx_t;

typedef struct unsparse_status
{
	status_t handle_status;
	unsparse_phase_t wait_phase;
	uint32 byte_to_process;    // byte to be processed in one packet.
	uint8 *buf;                        // byte buffer of one packet.
	cache_ctx_t ctx;           //buffer download context.
	partition_info_struct_t* partition;
} unsparse_status_t;


typedef struct unsparse_data
{
	sparse_header_t sparse_hdr;
	chunk_header_t chunk_hdr;
	uint32 chunks_processed;
	uint64 chunk_remain_data_size;      //data remained in current packet.
	uint64 image_address_offset;         //offset of current processed data in packet    |base---|---|---|-.....|offset.....|
	uint32 unhandle_buf_size;
	uint8  unhandle_buf[sizeof(chunk_header_t)];
} unsparse_data_t;

bool is_sparse_image(uint8* data, uint32 length);
bool support_sparse_image(void);
uint64 unspared_size(uint8* data);
void init_unsparse_status(unsparse_status_t* status,  partition_info_struct_t* partition);
void write_sparse_data(unsparse_status_t* status, uint8* data, uint32 length);

//ex functions
void end_write_sparse_data(unsparse_status_t* status);


#endif