/* SPDX-License-Identifier: LGPL-2.1-only OR BSD-3-Clause */
/******************************************************************************
 *
 * This file is provided under a dual license.  When you use or
 * distribute this software, you may choose to be licensed under
 * version 2.1 of the GNU Lesser General Public License
 * ("LGPLv2.1 License") or BSD License.
 *
 * LGPLv2.1 License
 *
 * Copyright(C) 2019 MediaTek Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2.1 of the GNU Lesser General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html for more
 * details.
 *
 * BSD LICENSE
 *
 * Copyright(C) 2019 MediaTek Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/

/*----------------------------------------------------------------------------*/
/*! @file u_dlm.h 
 *  $RCSfile: $
 *  $Revision: #1 $
 *  $Date: 2015/05/29 $
 *  $Author: brianpc.huang $
 *  
 *  @par Description:
 */
/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
/*! @defgroup groupMW_DLM Download Lib
 *
 *  @ingroup groupMW
 *  @brief Provides constant,type definitions and function of the Download Lib
*   .. Download Lib is a middleware component that is responsible for Download image to system
 *
 *  %MW Application API would be used by TV Application, lot of these APIs 
would
 *   be wrapped from Exported API
 *
 *  @see groupMW
 *  @{ 
 */
/*----------------------------------------------------------------------------*/

#ifndef U_DLM_H
#define U_DLM_H

#ifdef NO_MIDDLEWARE 
#ifdef CC_UBOOT
    #include <linux/string.h>
#else
#ifndef LOADER_IMGHDR_H
#ifndef CC_MTK_LOADER
    #include <stdio.h>
    #include <stdlib.h>
#endif /* CC_MTK_LOADER */
    #include <string.h>
#endif /* LOADER_IMGHDR_H */
#endif /* CC_UBOOT */
#ifdef CC_MTK_LOADER
    #include "u_os.h"
    extern INT32 Printf(const CHAR *format, ...);
    #define dlm_log     Printf    /**<        */
#else /* CC_MTK_LOADER */
/* Middleware C library */

    void *malloc(size_t size);
    void free(void *ptr);
    #define x_memcpy       memcpy    /**<Memory copy function.        */
    #define x_memcmp       memcmp    /**<Memory compare function.        */
    #define x_memset       memset    /**<Memory set function.        */
    #define x_mem_alloc    malloc    /**<Memory alloc function.        */
    #define x_mem_free     free    /**<Memory free function.        */
    #define dlm_log     printf    /**<Printf.        */
    #define x_strcpy       strcpy    /**<String copy function.        */
    #define x_strlen       strlen    /**<String length function.       */
    #define x_strcmp       strcmp    /**<String compare function.        */
    #define x_strcat       strcat    /**<Cascade string function.        */
#ifndef NO_TYPE_DEF
/* Middleware Type define */
    #define UINT32         unsigned int    /**<Middleware UINT32 define.        */
    #define UINT16         unsigned short    /**<Middleware UINT16 define.        */
    #define INT32          signed long    /**<Middleware INT32 define.        */
#endif /* NO_TYPE_DEF */
    #define UCHAR          unsigned char    /**<Middleware UCHAR define.        */
    #define CHAR           signed char    /**<Middleware CHAR define.        */
    #define VOID           void    /**<Middleware VOID define.        */
	#define BOOL           int
	#define FALSE          0
	#define TRUE           1
    #define UINT32		   unsigned int    /**<Middleware UINT32 define.		*/
	#define UINT8         unsigned char    /**<Middleware UINT32 define.        */
#endif /* CC_MTK_LOADER */
#else
#include "u_os.h"
#ifdef LINUX_TURNKEY_SOLUTION
#ifndef CC_UBOOT
#ifndef LOADER_IMGHDR_H
#ifndef CC_MTK_LOADER
    #include <stdio.h>
    #include <stdlib.h>
#endif /* CC_MTK_LOADER */
#endif /* LOADER_IMGHDR_H */
#endif /* CC_UBOOT */
#endif
#ifdef CC_MTK_LOADER
    #define dlm_log     Printf
#else
    #ifdef LINUX_TURNKEY_SOLUTION
    #define dlm_log     printf
    #else/* nucleus */
    extern INT32 Printf(const CHAR *format, ...);
    #define dlm_log     Printf
    #endif
#endif    
#endif

#ifdef CC_MTK_LOADER
#define X_INTERNAL_BUFFER_SIZE  (4*1024*1024) /**<Minum size is hdr size. */
#else
#define X_INTERNAL_BUFFER_SIZE  (4*1024*1024)    /**<Minum size is hdr size. */
#endif

#define DEBUG_DLM_TRACE 1    /**<Debug log open.        */

#if DEBUG_DLM_TRACE
    #define DLM_TRACE(x)  {dlm_log x;}    /**<Debug log.        */
#else
    #define DLM_TRACE(x)    /**<Debug log.         */
#endif

#define kValidateID             (UCHAR) (0x10)    /**<Flag check ID.        */
#define kValidateVersion        (UCHAR) (0x20)    /**<Flag check version.        */
#define kValidateModelName      (UCHAR) (0x40)    /**<Flag model name.        */

/*for compress*/
#define COMPRESS_UNIT_LENGTH    (4*1024*1024)
#define COMPRESS_THREAD_COUNT   7
#define TRY_OPEN_FILE_COUNT     6
#define X_MAX_COMP_SUB_COUNT    2048


#ifndef DLM_USE_AES_MODE
#define UNCOMPRESS_LENGTH       512
#else
#define UNCOMPRESS_LENGTH       (1*1024*1024)
#endif
#define ADDRESS_ALIGNMENT       16
#define ROUND_UP(x, align)      ((x+(align-1))&(~(align-1)))


/*------------------------------------------------------------------*/
/*! @enum DLM_ACCESS_T
 *  @brief This structure enumerates access type of file operation.
 *  @code
 *  typedef enum 
 *  {
 *      DLM_READ = 0,
 *      DLM_READ_INCONSISTENCY,
 *      DLM_WRITE,
 *      DLM_WRITE_INCONSISTENCY
 *  }DLM_ACCESS_T;
 *  @endcode
 *  @li@c  DLM_READ                                          - Read access.
 *  @li@c  DLM_READ_INCONSISTENCY                            - Inconsistency read access.
 *  @li@c  DLM_WRITE                                         - Write access.
 *  @li@c  DLM_WRITE_INCONSISTENCY                           - Inconsistency write access.
 */
/*------------------------------------------------------------------*/
typedef enum 
{
    DLM_READ = 0,
    DLM_READ_INCONSISTENCY,
    DLM_WRITE,
    DLM_WRITE_INCONSISTENCY
}DLM_ACCESS_T;

/*------------------------------------------------------------------*/
/*! @enum DLM_RTN_T
 *  @brief This structure enumerates error code.
 *  @code
 *  typedef enum 
 *  {
 *      DLM_OK = 0,
 *      DLM_ALLOCATE_MEMORY_FAILED = -1,
 *      DLM_DUPLICATE_TAG = -2,
 *      DLM_DUPLICATE_API = -3,
 *      DLM_ID_NOT_MATCH = -4,
 *      DLM_MODEL_NAME_NOT_MATCH = -5,
 *      DLM_DIGEST_NOT_MATCH =  -6,
 *      DLM_VERSION_NOT_MATCH = -7,
 *      DLM_HDR_MAGIC_NOT_MATCH = -8,
 *      DLM_NO_HELPER_REGISTERED = -9,
 *      DLM_PARSE_HELPER_FAILED = -10,
 *      DLM_PARSE_HELPER_IGNORED = -11,
 *      DLM_OPEN_FILE_FAILED = -12,
 *      DLM_DEL_FILE_FAILED = -13,
 *      DLM_RENAME_FILE_FAILED = -14,
 *      DLM_READ_FILE_FAILED = -15,
 *      DLM_WRITE_DATA_FAILED= -16,
 *      DLM_UPLOAD_FAILED = -17,
 *      DLM_UNKONW_TAG = -18,
 *      DLM_OTHERS = -100,
 *      DLM_UI_PERCENTAGE_STATUS
 *  } DLM_RTN_T;
 *  @endcode
 *  @li@c  DLM_OK                                            - Ok.
 *  @li@c  DLM_ALLOCATE_MEMORY_FAILED                        - Out of memory.
 *  @li@c  DLM_DUPLICATE_TAG                                 - Duplicate tag.
 *  @li@c  DLM_DUPLICATE_API                                 - Duplicate API.
 *  @li@c  DLM_ID_NOT_MATCH                                  - ID not match.
 *  @li@c  DLM_MODEL_NAME_NOT_MATCH                          - Model name not match.
 *  @li@c  DLM_DIGEST_NOT_MATCH                              - Digest not match.
 *  @li@c  DLM_VERSION_NOT_MATCH                             - Version not match.
 *  @li@c  DLM_HDR_MAGIC_NOT_MATCH                           - Header magic not match.
 *  @li@c  DLM_NO_HELPER_REGISTERED                          - Not helper registered.
 *  @li@c  DLM_PARSE_HELPER_FAILED                           - Parse helper failed.
 *  @li@c  DLM_PARSE_HELPER_IGNORED                          - Parse helper ignored.
 *  @li@c  DLM_OPEN_FILE_FAILED                              - Open file failed.
 *  @li@c  DLM_DEL_FILE_FAILED                               - Delete file failed.
 *  @li@c  DLM_RENAME_FILE_FAILED                            - Rename file failed.
 *  @li@c  DLM_READ_FILE_FAILED                              - Read file failed.
 *  @li@c  DLM_WRITE_DATA_FAILED                             - Write data failed.
 *  @li@c  DLM_UPLOAD_FAILED                                 - Upload failed.
 *  @li@c  DLM_UNKONW_TAG                                    - Unkown tag.
 *  @li@c  DLM_OTHERS                                        - Others.
 *  @li@c  DLM_UI_PERCENTAGE_STATUS                          - Status of UI percentage.
 */
/*------------------------------------------------------------------*/
typedef enum 
{
    DLM_OK = 0,

    /* memory failed */
    DLM_ALLOCATE_MEMORY_FAILED = -1,

    /* append data callback */
    DLM_DUPLICATE_TAG = -2,
    DLM_DUPLICATE_API = -3,

    /* possible return code from code file header check process */
    DLM_ID_NOT_MATCH = -4,
    DLM_MODEL_NAME_NOT_MATCH = -5,
    DLM_DIGEST_NOT_MATCH =  -6,
    DLM_VERSION_NOT_MATCH = -7,
    DLM_HDR_MAGIC_NOT_MATCH = -8,

    /* call helper to parse each append data */
    DLM_NO_HELPER_REGISTERED = -9,
    DLM_PARSE_HELPER_FAILED = -10,
    DLM_PARSE_HELPER_IGNORED = -11,

    /* file operation failed */
    DLM_OPEN_FILE_FAILED = -12,
    DLM_DEL_FILE_FAILED = -13,
    DLM_RENAME_FILE_FAILED = -14,
    DLM_READ_FILE_FAILED = -15,
    DLM_WRITE_DATA_FAILED= -16,
    DLM_UPLOAD_FAILED = -17,

    DLM_UNKONW_TAG = -18,
    DLM_DIVISION_SIZE_ERROR = -19,
    DLM_ARGV_INVALID = -20,

	DLM_RSA_PUBLIC_KEY_PARSER_ERROR = -21,
	DLM_RSA_PRAVITE_KEY_PARSER_ERROR = -22,
	DLM_RSA_DECODE_ERROR = -23,
	DLM_RSA_ENCODE_ERROR = -24,

    DLM_OTHERS = -100,


    /* status report */
    DLM_UI_PERCENTAGE_STATUS
} DLM_RTN_T;

/*------------------------------------------------------------------*/
/*! @brief  header parse function,define by user.
 *  @param [in] s_filename Specified the download file.
 */
/*------------------------------------------------------------------*/
typedef INT32 (*dlm_hdr_parse_fn)           (CHAR *s_filename);
/*------------------------------------------------------------------*/
/*! @brief Append data parse fuction,define by user.
 *  @param [in] e_flag Access of file operation.
 *  @param [in] *pi4_len Length of the buffer.
 *  @param [in][out] pauc_buffer Buffer for store append data. alloc by user.
 */
/*------------------------------------------------------------------*/
typedef INT32 (*dlm_append_data_fn)         (DLM_ACCESS_T e_flag, UCHAR *pauc_buffer, INT32 *pi4_len);
/*------------------------------------------------------------------*/
/*! @brief Append data parse fuction2,define by user.
 *  @param [in] s_tag_name Specified the tag name for parse.
 *  @param [in] e_flag Access of file operation.
 *  @param [in] *pi4_len Length of the buffer.
 *  @param [in][out] pauc_buffer Buffer for store append data. alloc by user.
 */
/*------------------------------------------------------------------*/
typedef INT32 (*dlm_append_data_fn2)         (UCHAR* s_tag_name, DLM_ACCESS_T e_flag, UCHAR *pauc_buffer, INT32 *pi4_len);
/*------------------------------------------------------------------*/
/*! @brief Notify function for percent of progress.
 *  @param [out] i4_percentage Percent of progress.
 */
/*------------------------------------------------------------------*/
typedef INT32 (*dlm_progress_notify_fn)     (INT32 i4_percentage);
/*------------------------------------------------------------------*/
/*! @brief Version check funtion,define by user.
 *  @param [in] ps_version Specified the version to be check.
 */
/*------------------------------------------------------------------*/
typedef INT32 (*dlm_ver_chk_fn)             (CHAR *ps_version);

/*------------------------------------------------------------------*/
/*! @struct DLM_APPEND_BLOCK_T
 *  @brief Struct of append data.
 *  @code
 *  typedef struct _DLM_PARSE_BLOCK_S
 *  {
 *      UCHAR                      uc_type[4];
 *      UCHAR                     *pauc_buffer;
 *      UINT32                     ui4_buf_len;
 *      dlm_append_data_fn         pf_callback;
 *      dlm_append_data_fn2		pf_callback2;
 *      struct _DLM_PARSE_BLOCK_S *pt_next;
 *  }DLM_APPEND_BLOCK_T;
 *  @endcode
 *  @li@c  uc_type[4]                                        - Tag of append data.
 *  @li@c  *pauc_buffer                                      - Buffer for append data.
 *  @li@c  ui4_buf_len                                       - Buffer length.
 *  @li@c  pf_callback                                       - Callback function registered from caller.
 *  @li@c  pf_callback2                                      - Callback function2 registered from caller.
 *  @li@c  *pt_next                                          - Point to next append data.
 */
/*------------------------------------------------------------------*/
typedef struct _DLM_PARSE_BLOCK_S
{
    /*UCHAR                      uc_type;*/
    UCHAR                      uc_type[4];
    UCHAR                     *pauc_buffer;
    UINT32                     ui4_buf_len;
#if (defined(DLM_USE_AES_MODE) && defined(CC_MTK_LOADER))
	UINT32                     ui4_cb_data_len;
#endif
    dlm_append_data_fn         pf_callback;
    dlm_append_data_fn2		pf_callback2;
    struct _DLM_PARSE_BLOCK_S *pt_next;
}DLM_APPEND_BLOCK_T;

/*------------------------------------------------------------------*/
/*! @struct Append_DATA_TLV_T
 *  @brief Append data tables.
 *  @code
 *  typedef struct _APPEND_DATA_TLV_S
 *  {
 *      UCHAR  uc_type[4];
 *      UCHAR  uc_privacy[4];
 *      UCHAR  uc_length[4];
 *  } Append_DATA_TLV_T;
 *  @endcode
 *  @li@c  uc_type[4]                                        - Tag of append data.
 *  @li@c  uc_privacy[4]                                     - Control of append data.
 *  @li@c  uc_length[4]                                      - Lendth of append data.
 */
/*------------------------------------------------------------------*/
typedef struct _APPEND_DATA_TLV_S
{
    UCHAR  uc_type[4];
    UCHAR  uc_privacy[4];
    UCHAR  uc_length[4];
#if (defined(DLM_USE_AES_MODE) || ((defined(LINUX_TURNKEY_SOLUTION)) && (!defined(CC_MTK_LOADER))))
    UCHAR  uc_magic[16];
    UCHAR  uc_digest[32];
 #endif
} Append_DATA_TLV_T;

/*------------------------------------------------------------------*/
/*! @struct DEFAULT_CODE_FILE_HDR_T
 *  @brief File header for download.
 *  @code
 *  typedef struct DEFAULT_CODE_FILE_HDR_S
 *  {
 *      UCHAR   uac_id[4];           
 *      CHAR    s_magic[8];          
 *      CHAR    s_version[64];
 *      UINT32  ui4_time;
 *      UINT32  ui4_total_size;
 *      UCHAR   uac_control[4];
 *      UCHAR   s_model[32];
 *      UCHAR   uac_signature[32];
 *  } DEFAULT_CODE_FILE_HDR_T;
 *  @endcode
 *  @li@c  uac_id[4]                                         - Default key to encrypt/decrypt data. 
 *  @li@c  s_magic[8]                                        - Unique field for firmware (quick check item).
 *  @li@c  s_version[64]                                     - Field for firmware version.
 *  @li@c  ui4_time                                          - Build time.
 *  @li@c  ui4_total_size                                    - Filesize.
 *  @li@c  uac_control[4]                                    - Logic control flag.
 *  @li@c  s_model[32]                                       - Module name.
 *  @li@c  uac_signature[32]                                 - File signature.
 */
/*------------------------------------------------------------------*/

#ifdef CC_DLM_V2
#define DLM_HDR_SIGNATURE_SIZE 256
#else
#define DLM_HDR_SIGNATURE_SIZE 32
#endif

typedef struct DEFAULT_CODE_FILE_HDR_S
{
    UCHAR   uac_id[4];           /* default key to encrypt/decrypt data */
    CHAR    s_magic[8];          /* unique field for firmware (quick check item) */
#if (defined(DLM_USE_AES_MODE) || ((defined(LINUX_TURNKEY_SOLUTION)) && (!defined(CC_MTK_LOADER))))
    CHAR    s_version[56];
#else
    CHAR    s_version[64];
#endif
    UINT32  ui4_time;
    UINT32  ui4_total_size;
    UCHAR   uac_control[4];
    UCHAR   s_model[32];
#ifdef CC_DLM_V2
	UCHAR  uac_signature[256];
#else
	UCHAR  uac_signature[32];
#endif
} DEFAULT_CODE_FILE_HDR_T;

/*------------------------------------------------------------------*/
/*! @struct Append_T
 *  @brief Append data block common header.
 *  @code
 *  typedef struct append_s
 *  {
 *      UCHAR    uc_type[4];
 *      UCHAR    uac_privacy[4];
 *      UINT32   ui4_length;
 *      CHAR    *ps_filename;
 *      struct append_s *pt_next;
 *  } Append_T;
 *  @endcode
 *  @li@c  uc_type[4]                                        - Append tag.
 *  @li@c  uac_privacy[4]                                    - Control of append data.
 *  @li@c  ui4_length                                        - Append data length.
 *  @li@c  *ps_filename                                      - Append filename.
 *  @li@c  *pt_next                                          - Point to next append data.
 */
/*------------------------------------------------------------------*/
typedef struct append_s
{
    UCHAR    uc_type[4];
    UCHAR    uac_privacy[4];
    UINT32   ui4_length;
    CHAR    *ps_filename;

    struct append_s *pt_next;
} Append_T;

/*------------------------------------------------------------------*/
/*! @enum DLM_OPEN_MODE_T
 *  @brief  I/O releate define
 *  @code
 *  typedef enum 
 *  {
 *      kDlm_Read = 0,
 *      kDlm_Write,
 *      kDlm_Append
 *  } DLM_OPEN_MODE_T;
 *  @endcode
 *  @li@c  kDlm_Read                                         - Read access.
 *  @li@c  kDlm_Write                                        - Write access.
 *  @li@c  kDlm_Append                                       - Append access.
 */
/*------------------------------------------------------------------*/
typedef enum 
{
    kDlm_Read = 0,
    kDlm_Write,
    kDlm_Write_Replace,
    kDlm_Append
} DLM_OPEN_MODE_T;

/*------------------------------------------------------------------*/
/*! @brief I/O open file function.
 *  @param [in] ps_filename Specified the file to be open.
 *  @param [in] e_mode Open mode for the specify file.
 */
/*------------------------------------------------------------------*/
typedef INT32  (*dlm_open_fn)       (CHAR *ps_filename, DLM_OPEN_MODE_T e_mode);
/*------------------------------------------------------------------*/
/*! @brief I/O close file function.
 *  @param [in] i4_fd File handle, point to the file which want to be close.
 */
/*------------------------------------------------------------------*/
typedef INT32  (*dlm_close_fn)      (INT32 i4_fd);
/*------------------------------------------------------------------*/
/*! @brief  I/O read file function.
 *  @param [in] i4_fd File handle, point to the file. 
 *  @param [out] pc_buf Buffer for store data.
 *  @param [in] ui4_buf_size Read count.
 */
/*------------------------------------------------------------------*/
typedef INT32  (*dlm_read_fn)       (INT32 i4_fd, CHAR *pc_buf, UINT32 ui4_buf_size);
/*------------------------------------------------------------------*/
/*! @brief I/O write file function.
 *  @param [in] i4_fd File handle, point to the file .
 *  @param [in] pc_buffer Buffer for store data.
 *  @param [in] ui4_buf_size Size for write.
 */
/*------------------------------------------------------------------*/
typedef INT32  (*dlm_fwrite_fn)     (INT32 i4_fd, CHAR *pc_buffer, UINT32 ui4_buf_size);
/*------------------------------------------------------------------*/
/*! @brief I/O eof function.
 *  @param [in] i4_fd File handle, point to the file.
 */
/*------------------------------------------------------------------*/
typedef INT32  (*dlm_eof_fn)        (INT32 i4_fd);
/*------------------------------------------------------------------*/
/*! @brief Calc file length function.
 *  @param [in] Filename specify the file.
 */
/*------------------------------------------------------------------*/
typedef UINT32 (*dlm_file_size_fn)  (CHAR *filename);
/*------------------------------------------------------------------*/
/*! @brief  I/O seek funtion.
 *  @param [in] i4_fd File handle, point to the file.
 *  @param [in] i4_offset Seek i4_offset count.
 */
/*------------------------------------------------------------------*/
typedef INT32  (*dlm_seek_fn)       (INT32 i4_fd, UINT32 i4_offset);

/*------------------------------------------------------------------*/
/*! @struct DLM_IO_T
 *  @brief  I/O fuction.
 *  @code
 *  typedef struct DLM_IO_S
 *  {
 *      dlm_open_fn         open_source;
 *      dlm_close_fn        close_source;
 *      dlm_read_fn         read_data;
 *      dlm_fwrite_fn       write_data;
 *      dlm_eof_fn          eof_data;
 *      dlm_file_size_fn    data_size;
 *      dlm_seek_fn         seek_source;
 *  }DLM_IO_T;
 *  @endcode
 *  @li@c  open_source                                       - Open file function.
 *  @li@c  close_source                                      - Close file function.
 *  @li@c  read_data                                         - Read file function.
 *  @li@c  write_data                                        - Write data function.
 *  @li@c  eof_data                                          - Eof data function.
 *  @li@c  data_size                                         - Get file size function.
 *  @li@c  seek_source                                       - Seek file function.
 */
/*------------------------------------------------------------------*/
typedef struct DLM_IO_S
{
    dlm_open_fn         open_source;
    dlm_close_fn        close_source;
    dlm_read_fn         read_data;
    dlm_fwrite_fn       write_data;
    dlm_eof_fn          eof_data;
    dlm_file_size_fn    data_size;
    dlm_seek_fn         seek_source;
}DLM_IO_T;

/*------------------------------------------------------------------*/
/*! @struct COMPRESS_T
 *  @brief Comress data for packing
 *  @li@c  *pt_append                                           - Append tag.
 *  @li@c  i4_comp_sub_index                                    - compress sub index
 *  @li@c  i4_comp_sub_length                                   - compress sub length
 *  @li@c  *comp_sub_source_buf                                 - compress source buffer
 */
/*------------------------------------------------------------------*/
typedef struct compress_s
{
	Append_T *pt_append;
    INT32 in_file;
} COMPRESS_T;
#endif

/*----------------------------------------------------------------------------*/
/*! @} */   /* end of  groupMW_DLM*/
/*----------------------------------------------------------------------------*/

