mh5fileorm.h File Reference

File interface functions to DSMCC component. More...

#include "mh5base.h"
#include "mh5root.h"
#include "fs_types.h"
#include "mh5gate.h"

Go to the source code of this file.

Macros
#define	FRP_CACHE_DEFAULT   0x007F
#define	FRP_CACHE_MASK   0x00FF
#define	FRP_APPLICATION   0x0100
#define	FRP_SCENE   0x0200
#define	FRP_GROUP   0x0300
#define	FRP_EXISTS   0x0400
#define	FRP_VERIFY   0x0800
#define	FRP_HASH   0x1000
#define	FRP_CERT   0x2000
#define	FRP_SERVER   0x3000
#define	FRP_DEFER_SERV   0x4000
#define	FRP_IN_APP   0x8000

Typedefs
typedef void(*	F_CB_Good) (void *userData, S_CONTENT *content)
typedef void(*	F_CB_Fail) (void *userData)
typedef void(*	F_CB_Post) (void *userData, MHEG5String responseData, MHEG5Int responseCode)
typedef void(*	F_CB_CiMsg) (void *userData, MHEG5String output, MHEG5Bool success)

Enumerations
enum	MHEG5FileOrmResetMode { MHEG5_FILE_ORM_RESET_SCENE_OBJECTS, MHEG5_FILE_ORM_RESET_ALL_OBJECTS, MHEG5_FILE_ORM_RESET_ALL }

Functions
void	MHEG5FileOrmInit (void)
	Initialise the file ORM module. More...
void	MHEG5FileOrmReset (MHEG5FileOrmResetMode resetMode)
	Reset the ORM module. This function supports two modes: More...
BOOLEAN	MHEG5FileOrmIsReset (MHEG5FileOrmResetMode *resetMode)
	Tell whether the ORM module is currently being reset. If it is, the function also returns the current reset mode. This information is required in order to decide whether to generate an EngineEvent when a file load fails. If a file cannot be loaded (doesn't exist, timeout) then an event is required, but if a file load "fails" because the ORM module is being reset, then no event should be generated. resetMode is an optional parameter, and it can also be NULL. More...
BOOLEAN	MHEG5FileOrmProcess (void)
	Check for any file requests that have arrived since this function was last called. For each arrived file the callback will be called. The function may have to be called more than once in case a file the arrived affects other files as well. More...
void	MHEG5FileOrmClear (void *orm_ref)
	Aborts a request for file. More...
void *	MHEG5FileOrmGet (MHEG5String name, U16BIT priority, void *userData, F_CB_Good cbGood, F_CB_Fail cbFail)
	Get a file. The file will be loaded and one of the callback functions called when request is resolved. When file system acceleration is available, this may retrieve the file from NVM cache. More...
void *	MHEG5FileOrmRetrieve (E_FS_ORIGIN origin, S_STRING location, S_STRING name, U16BIT priority, void *userData, F_CB_Good cbGood, F_CB_Fail cbFail)
	Retrieve of a file. The file will be loaded and one of the callback functions called when request is resolved. This is intended to be used by the File System Acceleration code. More...
void	MHEG5FileOrmPreloadHint (MHEG5String name)
	Provide a preload hint to DSM-CC that the specified file may be required in the future. DSM-CC could (but is not required to) acquire the file into cache. More...
void	MHEG5ciFileAcknowledge (BOOLEAN fileOK, U8BIT *pFileData, U32BIT length)
	Process the FileAcknowledge message sent from the CI module. More...

Detailed Description

File interface functions to DSMCC component.

Date

17/01/2002

Author

R.Freeman

Function Documentation

void MHEG5ciFileAcknowledge	(	BOOLEAN	fileOK,
		U8BIT *	pFileData,
		U32BIT	length
	)

Process the FileAcknowledge message sent from the CI module.

Parameters

fileOK	FileOK field of the FileAcknowledge message
pFileData	Pointer to file data in the FileAcknowledge message
length	Number of bytes in the file data

Returns

void

void MHEG5FileOrmClear

(

void *

orm_ref

)

Aborts a request for file.

Parameters

orm_ref

File Orm handle returned by MHEG5FileOrmGet()

Returns

None.

Aborts a request for file.

Parameters

orm_ref

Handle given back by MHEG5FileOrmGet

Returns

None.

void* MHEG5FileOrmGet	(	MHEG5String	name,
		U16BIT	priority,
		void *	userData,
		F_CB_Good	cbGood,
		F_CB_Fail	cbFail
	)

Get a file. The file will be loaded and one of the callback functions called when request is resolved. When file system acceleration is available, this may retrieve the file from NVM cache.

Parameters

name	Name of file to retrieve. This will be expanded using the rules specified by the UK1 profile.
priority	Cache priority with which to fetch the object.
userData	User data to be returned in callback functions.
cbGood	Pointer to callback function that will be called when the file is retreived.
cbFail	Pointer to callback function that will be called when the file cannot be retrieved.

Returns

void* - the FileOrm request handle

void MHEG5FileOrmInit

(

void

)

Initialise the file ORM module.

Returns

void

always returns 1

BOOLEAN MHEG5FileOrmIsReset

(

MHEG5FileOrmResetMode *

resetMode

)

Tell whether the ORM module is currently being reset. If it is, the function also returns the current reset mode. This information is required in order to decide whether to generate an EngineEvent when a file load fails. If a file cannot be loaded (doesn't exist, timeout) then an event is required, but if a file load "fails" because the ORM module is being reset, then no event should be generated. resetMode is an optional parameter, and it can also be NULL.

Parameters

resetMode

Reset mode (if return value is TRUE)

Returns

TRUE if the ORM module is being reset, FALSE otherwise

void MHEG5FileOrmPreloadHint

(

MHEG5String

name

)

Provide a preload hint to DSM-CC that the specified file may be required in the future. DSM-CC could (but is not required to) acquire the file into cache.

Parameters

name	Name of file to preload

Returns

void

BOOLEAN MHEG5FileOrmProcess

(

void

)

Check for any file requests that have arrived since this function was last called. For each arrived file the callback will be called. The function may have to be called more than once in case a file the arrived affects other files as well.

Returns

void

TRUE if the function should be called again, FALSE otherwise

void MHEG5FileOrmReset

(

MHEG5FileOrmResetMode

resetMode

)

Reset the ORM module. This function supports two modes:

• In "objects" mode, only outstanding file requests that are related to MHEG-5 objects are cancelled.
• In "all" mode, every outstanding file request is cleared. This includes file requests to certificates and access files.

  Parameters

  resetMode

  Reset mode

  Returns

  None.

void* MHEG5FileOrmRetrieve	(	E_FS_ORIGIN	origin,
		S_STRING	location,
		S_STRING	name,
		U16BIT	priority,
		void *	userData,
		F_CB_Good	cbGood,
		F_CB_Fail	cbFail
	)

Retrieve of a file. The file will be loaded and one of the callback functions called when request is resolved. This is intended to be used by the File System Acceleration code.

Parameters

origin	Origin of file to retrieve.
location	Path location of file to retrieve.
name	Name of file to retrieve.
priority	Cache priority with which to fetch the object.
userData	User data to be returned in callback functions.
cbGood	Pointer to callback function that will be called when the file is retreived.
cbFail	Pointer to callback function that will be called when the file cannot be retrieved.

Returns

void* - the FileOrm request handle