GrlOperationOptions

GrlOperationOptions — Describes the options to be passed to an operation

Object Hierarchy

    GObject
    ╰── GrlOperationOptions

Includes

#include <grilo.h>

Description

Functions

grl_operation_options_new ()

GrlOperationOptions *
grl_operation_options_new (GrlCaps *caps);

Creates a new GrlOperationOptions object.

Parameters

caps

caps that options will have to match. If NULL, all options will be accepted.

[allow-none]

Returns

a new GrlOperationOptions instance.

Since: 0.2.0


grl_operation_options_copy ()

GrlOperationOptions *
grl_operation_options_copy (GrlOperationOptions *options);

Parameters

options

a GrlOperationOptions instance

 

Returns

a new GrlOperationOptions instance with its values being copies of the values of options .

[transfer full]

Since: 0.2.0


grl_operation_options_get_count ()

gint
grl_operation_options_get_count (GrlOperationOptions *options);

Get the count option, that is, the number of elements to retrieve in an operation done with options .

Parameters

options

a GrlOperationOptions instance

 

Returns

the value of the count option, or a default value if it is not set.

Since: 0.2.0


grl_operation_options_get_resolution_flags ()

GrlResolutionFlags
grl_operation_options_get_resolution_flags
                               (GrlOperationOptions *options);

Parameters

options

a GrlOperationOptions instance

 

Returns

resolution flags of options .

Since: 0.2.12


grl_operation_options_get_key_filter ()

GValue *
grl_operation_options_get_key_filter (GrlOperationOptions *options,
                                      GrlKeyID key);

Parameters

options

a GrlOperationOptions instance

 

Returns

the filter.

[transfer none]

Since: 0.2.0


grl_operation_options_get_key_filter_list ()

GList *
grl_operation_options_get_key_filter_list
                               (GrlOperationOptions *options);

Parameters

options

a GrlOperationOptions instance

 

Returns

.

[transfer container][element-type GrlKeyID]

Since: 0.2.0


grl_operation_options_get_key_range_filter ()

void
grl_operation_options_get_key_range_filter
                               (GrlOperationOptions *options,
                                GrlKeyID key,
                                GValue **min_value,
                                GValue **max_value);

Stores the limits of the range in the filter for key in min_value and max_value . If some of the values has no limit, it will set a NULL.

Parameters

options

a GrlOperationOptions instance

 

key

a GrlKeyID

 

min_value

the minimum value for the range.

[out][allow-none][transfer none]

max_value

the maximum value for the range.

[out][allow-none][transfer none]

Since: 0.2.0


grl_operation_options_get_key_range_filter_list ()

GList *
grl_operation_options_get_key_range_filter_list
                               (GrlOperationOptions *options);

Parameters

options

a GrlOperationOptions instance

 

Returns

.

[transfer container][element-type GrlKeyID]

Since: 0.2.0


grl_operation_options_get_skip ()

guint
grl_operation_options_get_skip (GrlOperationOptions *options);

Get the skip option, that is, the number of elements to skip before retrieving media items in an operation done with options .

Parameters

options

a GrlOperationOptions instance

 

Returns

the value of the skip option, or a default value if it is not set.

Since: 0.2.0


grl_operation_options_get_type_filter ()

GrlTypeFilter
grl_operation_options_get_type_filter (GrlOperationOptions *options);

Parameters

options

a GrlOperationOptions instance

 

Returns

resolution flags of options

Since: 0.2.0


grl_operation_options_obey_caps ()

gboolean
grl_operation_options_obey_caps (GrlOperationOptions *options,
                                 GrlCaps *caps,
                                 GrlOperationOptions **supported_options,
                                 GrlOperationOptions **unsupported_options);

Check whether options obey to caps . Optionally provide the options that match (respectively don't match) caps in supported_options (respectively unsupported_options ). This would typically (but not necessarily) be used with a GrlOperationOptions instance that was created with NULL caps.

Parameters

options

a GrlOperationOptions instance

 

caps

capabilities against which we want to test options

 

supported_options

if not NULL, will contain a newly-allocated GrlOperationOptions instance containing all the values of options that match caps .

[out callee-allocates]

unsupported_options

if not NULL, will contain a newly-allocated GrlOperationOptions instance containing all the values of options that do not match caps .

[out callee-allocates]

Returns

TRUE if options obey to caps , FALSE otherwise.

Since: 0.2.0


grl_operation_options_set_count ()

gboolean
grl_operation_options_set_count (GrlOperationOptions *options,
                                 gint count);

Set the count option for an operation. Will only succeed if count obey to the inherent capabilities of options .

Parameters

options

a GrlOperationOptions instance

 

count

number of elements to retrieve in an operation

 

Returns

TRUE if count could be set, FALSE otherwise.

Since: 0.2.0


grl_operation_options_set_resolution_flags ()

gboolean
grl_operation_options_set_resolution_flags
                               (GrlOperationOptions *options,
                                GrlResolutionFlags flags);

Set the resolution flags for an operation. Will only succeed if flags obey to the inherent capabilities of options .

Parameters

options

a GrlOperationOptions instance

 

flags

the resolution flags to be set for an operation. See GrlResolutionFlags for possible values.

 

Returns

TRUE if flags could be set, FALSE otherwise.

Since: 0.2.12


grl_operation_options_set_key_filter_dictionary ()

gboolean
grl_operation_options_set_key_filter_dictionary
                               (GrlOperationOptions *options,
                                GHashTable *filters);

[rename-to grl_operation_options_set_key_filters]

Parameters

options

a GrlOperationOptions instance

 

filters

.

[transfer none][element-type GrlKeyID GValue]

Returns

TRUE on success

Since: 0.2.0


grl_operation_options_set_key_filter_value ()

gboolean
grl_operation_options_set_key_filter_value
                               (GrlOperationOptions *options,
                                GrlKeyID key,
                                GValue *value);

Set filter as "key == value ".

Parameters

options

a GrlOperationOptions instance

 

key

a GrlKeyID

 

value

a GValue

 

Returns

TRUE on success

Since: 0.2.0


grl_operation_options_set_key_filters ()

gboolean
grl_operation_options_set_key_filters (GrlOperationOptions *options,
                                       ...);

Set filter as "k1 == v1 AND k2 == v2 AND ..."

Example 2. 

Elements from album "Frozen" with a bitrate of 256kbs.
  grl_operation_options_set_key_filters (my_options,
                                         GRL_METADATA_KEY_ALBUM, "Frozen",
                                         GRL_METADATA_KEY_BITRATE, 256,
                                         NULL);
 


Parameters

options

a GrlOperationOptions instance

 

...

pairs of GrlKeyID, value

 

Returns

TRUE on success

Since: 0.2.0


grl_operation_options_set_key_range_filter ()

gboolean
grl_operation_options_set_key_range_filter
                               (GrlOperationOptions *options,
                                ...);

Set filter as "min1 <= k1 <= max1 AND min2 <= k2 <= max2 AND ..."

The range can be open if some of the minX, maxX values are NULL.

Example 3. 

Album must start with "T" and the bitrate should be 256kbs or greater.
  grl_operation_options_set_key_range_filters (my_options,
                                               GRL_METADATA_KEY_ALBUM, "Ta", "Tz",
                                               GRL_METADATA_KEY_BITRATE, 256, NULL,
                                               NULL);
 


Parameters

options

a GrlOperationOptions instance

 

...

triplets of GrlKeyID, minvalue, maxvalue

 

Returns

TRUE on success

Since: 0.2.0


grl_operation_options_set_key_range_filter_value ()

gboolean
grl_operation_options_set_key_range_filter_value
                               (GrlOperationOptions *options,
                                GrlKeyID key,
                                GValue *min_value,
                                GValue *max_value);

Set filter as "min_value <= key <= max_value ".

If min_value is NULL, then filter is "key <= max_value ".

If max_value is NULL, then filter is "key >= min_value ".

Parameters

options

a GrlOperationOptions instance

 

key

a GrlKeyID

 

min_value

minimum value for range.

[in][allow-none]

max_value

maximum value for range.

[in][allow-none]

Returns

TRUE on success

Since: 0.2.0


grl_operation_options_set_skip ()

gboolean
grl_operation_options_set_skip (GrlOperationOptions *options,
                                guint skip);

Set the skip option for an operation. Will only succeed if skip obeys to the inherent capabilities of options .

Parameters

options

a GrlOperationOptions instance

 

skip

number of elements to skip in an operation

 

Returns

TRUE if skip could be set, FALSE otherwise.

Since: 0.2.0


grl_operation_options_set_type_filter ()

gboolean
grl_operation_options_set_type_filter (GrlOperationOptions *options,
                                       GrlTypeFilter filter);

Set the type of media filter for an operation. Only those media elements that match the filter will be returned. Will only succeed if filter obey to the inherent capabilities of options .

Parameters

options

a GrlOperationOptions instance

 

filter

the type of media to get

 

Returns

TRUE if flags could be set, FALSE otherwise

Since: 0.2.0

Types and Values

GrlOperationOptions

typedef struct _GrlOperationOptions GrlOperationOptions;

GrlOperationOptionsClass

typedef struct {
  GObjectClass parent;
} GrlOperationOptionsClass;

Grilo Operation Options class.

Members

GObjectClass parent;

the parent class structure

 

GRL_COUNT_INFINITY

#define GRL_COUNT_INFINITY (-1)