The Media Group API provides information related to artist of media group.

Required Header

#include <media_content.h>

Overview

A Media Group represents logical grouping of media files with respect to their group name. It is also used for filtering media items.

The API provides functions to get and search image, video and audio items in media group. For getting the count of media items associated with a given group, call media_group_get_media_count_from_db() function.

Foreach Operations

FOREACH	CALLBACK	DESCRIPTION
media_group_foreach_group_from_db()	media_group_cb()	Iterates through group
media_group_foreach_media_from_db()	media_info_cb()	Iterates through group's items

Functions
int	media_group_get_group_count_from_db (filter_h filter, media_group_e group, int *group_count)
	Gets the number of the group for the passed filter from the media database.
int	media_group_foreach_group_from_db (filter_h filter, media_group_e group, media_group_cb callback, void *user_data)
	Iterates through the media group with an optional filter from the media database.
int	media_group_get_media_count_from_db (const char group_name, media_group_e group, filter_h filter, int media_count)
	Gets the count of the media info for the given media group present in the media database.
int	media_group_foreach_media_from_db (const char group_name, media_group_e group, filter_h filter, media_info_cb callback, void user_data)
	Iterates through the media files with an optional filter in the given group from the media database.
Typedefs
typedef bool(*	media_group_cb )(const char group_name, void user_data)
	Called for every group in the obtained list of groups.

Typedef Documentation

typedef bool(* media_group_cb)(const char *group_name, void *user_data)

Called for every group in the obtained list of groups.

Since :: 2.3.1

Iterates over a media group list.

Remarks:: You should not free group_name returned by this function.
The callback is called in the main loop.

Parameters:

[in]	group_name	The name of the media group
[in]	user_data	The user data passed from the foreach function

Returns:: true to continue with the next iteration of the loop, otherwise false to break out of the loop

Precondition:: media_group_foreach_group_from_db() will invoke this function.

See also:: media_group_foreach_group_from_db()

Function Documentation

int media_group_foreach_group_from_db	(	filter_h	filter,
		media_group_e	group,
		media_group_cb	callback,
		void *	user_data
	)

Iterates through the media group with an optional filter from the media database.

This function gets names of media group meeting the given filter. The callback function will be invoked for every retrieved media group. If NULL is passed to the filter, no filtering is applied.

Since :: 2.3.1

Parameters:

[in]	filter	The media filter handle
[in]	group	The type of the media group
[in]	callback	The callback function to be invoked
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIA_CONTENT_ERROR_NONE	Successful
MEDIA_CONTENT_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIA_CONTENT_ERROR_OUT_OF_MEMORY	Out of memory
MEDIA_CONTENT_ERROR_DB_FAILED	DB Operation failed
MEDIA_CONTENT_ERROR_DB_BUSY	DB Operation busy
MEDIA_CONTENT_ERROR_PERMISSION_DENIED	Permission denied

Precondition:: This function requires opened connection to content service by media_content_connect().

Postcondition:: This function invokes media_group_cb().

See also:: media_group_cb; media_content_connect(); media_filter_create()

int media_group_foreach_media_from_db	(	const char *	group_name,
		media_group_e	group,
		filter_h	filter,
		media_info_cb	callback,
		void *	user_data
	)

Iterates through the media files with an optional filter in the given group from the media database.

This function gets all media files associated with the given group and meeting desired filter option and calls registered callback function for every retrieved media info. If NULL is passed to the filter, no filtering is applied.

Since :: 2.3.1

Parameters:

[in]	group_name	The name of the media group
[in]	group	The type of the media group
[in]	filter	The media filter handle
[in]	callback	The callback function to be invoked
[in]	user_data	The user data to be passed to the callback function

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIA_CONTENT_ERROR_NONE	Successful
MEDIA_CONTENT_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIA_CONTENT_ERROR_OUT_OF_MEMORY	Out of memory
MEDIA_CONTENT_ERROR_DB_FAILED	DB Operation failed
MEDIA_CONTENT_ERROR_DB_BUSY	DB Operation busy
MEDIA_CONTENT_ERROR_PERMISSION_DENIED	Permission denied

Precondition:: This function requires opened connection to content service by media_content_connect().

Postcondition:: This function invokes media_info_cb().

See also:: media_info_cb(); media_content_connect(); media_filter_create()

int media_group_get_group_count_from_db	(	filter_h	filter,
		media_group_e	group,
		int *	group_count
	)

Gets the number of the group for the passed filter from the media database.

Since :: 2.3.1

Parameters:

[in]	filter	The media filter handle
[in]	group	The type of the media group
[out]	group_count	The count of the media group

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIA_CONTENT_ERROR_NONE	Successful
MEDIA_CONTENT_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIA_CONTENT_ERROR_DB_FAILED	DB Operation failed
MEDIA_CONTENT_ERROR_DB_BUSY	DB Operation busy
MEDIA_CONTENT_ERROR_PERMISSION_DENIED	Permission denied

Precondition:: This function requires opened connection to content service by media_content_connect().

See also:: media_content_connect()

int media_group_get_media_count_from_db	(	const char *	group_name,
		media_group_e	group,
		filter_h	filter,
		int *	media_count
	)

Gets the count of the media info for the given media group present in the media database.

Since :: 2.3.1

Parameters:

[in]	group_name	The name of the media group
[in]	group	The type of the media group
[in]	filter	The media filter handle
[out]	media_count	The count of the media

Returns:: 0 on success, otherwise a negative error value

Return values:

MEDIA_CONTENT_ERROR_NONE	Successful
MEDIA_CONTENT_ERROR_INVALID_PARAMETER	Invalid parameter
MEDIA_CONTENT_ERROR_OUT_OF_MEMORY	Out of memory
MEDIA_CONTENT_ERROR_DB_FAILED	DB Operation failed
MEDIA_CONTENT_ERROR_DB_BUSY	DB Operation busy
MEDIA_CONTENT_ERROR_PERMISSION_DENIED	Permission denied

Precondition:: This function requires opened connection to content service by media_content_connect().

See also:: media_content_connect()

Required Header

Overview

Foreach Operations

Functions

Typedefs

Typedef Documentation

Function Documentation