_Ecore_Audio_Vio Struct Reference

Data Fields
int(*	get_length )(void *data, Eo *eo_obj)
	Gets the length of the file. More...
int(*	seek )(void *data, Eo *eo_obj, int offset, int whence)
	Seeks to a position within the file. More...
int(*	tell )(void *data, Eo *eo_obj)
	Gets the current position within the file. More...
int(*	read )(void *data, Eo *eo_obj, void *buffer, int length)
	Reads some data from the file. More...
int(*	write )(void *data, Eo *eo_obj, const void *buffer, int length)
	Writes some data to the file. More...

Field Documentation

get_length

int(* _Ecore_Audio_Vio::get_length) (void *data, Eo *eo_obj)

Gets the length of the file.

Parameters

data	User data from the ecore_audio_obj_set_vio call
eo_obj	The Ecore_Audio object this operates on

Returns

The length of the virtual file in bytes

Since

1.8

seek

int(* _Ecore_Audio_Vio::seek) (void *data, Eo *eo_obj, int offset, int whence)

Seeks to a position within the file.

Parameters

data	User data from the ecore_audio_obj_set_vio call
eo_obj	The Ecore_Audio object this operates on
offset	The number of bytes to move (can be negative)
whence	Accepts the same values as fseek(), which are: SEEK_SET: offset is absolute SEEK_CUR: offset is relative to the current position SEEK_END: offset is relative to the end

Returns

The resulting position from the start of the file (in bytes) or -1 if an error occurred (i.e. out of bounds)

Since

1.8

tell

int(* _Ecore_Audio_Vio::tell) (void *data, Eo *eo_obj)

Gets the current position within the file.

Parameters

data	User data from the ecore_audio_obj_set_vio call
eo_obj	The Ecore_Audio object this operates on

Returns

The resulting position from the start of the file (in bytes)

This is equivalent to calling seek() with offset 0 and whence SEEK_CUR.

Since

1.8

read

int(* _Ecore_Audio_Vio::read) (void *data, Eo *eo_obj, void *buffer, int length)

Reads some data from the file.

Parameters

	data	User data from the ecore_audio_obj_set_vio call
	eo_obj	The Ecore_Audio object this operates on
[out]	buffer	the buffer to write the data to
	length	The number of bytes to read

Returns

The number of bytes read from the file. May be less than length

Since

1.8

write

int(* _Ecore_Audio_Vio::write) (void *data, Eo *eo_obj, const void *buffer, int length)

Writes some data to the file.

Parameters

data	User data from the ecore_audio_obj_set_vio call
eo_obj	The Ecore_Audio object this operates on
buffer	Write data from here to the file
length	The number of bytes to write

Returns

The number of bytes written to the file. May be less than length

Since

1.8