GrlCaps

GrlCaps — Describes the capabilities of a source for a given operation.

Functions

GrlCaps * grl_caps_new ()
GList * grl_caps_get_key_filter ()
GList * grl_caps_get_key_range_filter ()
GrlTypeFilter grl_caps_get_type_filter ()
gboolean grl_caps_is_key_filter ()
gboolean grl_caps_is_key_range_filter ()
void grl_caps_set_key_filter ()
void grl_caps_set_key_range_filter ()
void grl_caps_set_type_filter ()
gboolean grl_caps_test_option ()

Types and Values

  GrlCaps
  GrlCapsClass
enum GrlTypeFilter

Object Hierarchy

    GObject
    ╰── GrlCaps

Includes

#include <grilo.h>

Description

A GrlCaps instance is here to help you know if a given set of operation options is supported for a given operation.

Here is an example of how this would be used.

GrlCaps *caps = grl_source_get_caps (GRL_SOURCE (my_source),
                                     GRL_OP_SEARCH);
GrlOperationOptions *supported_options;
if (grl_operation_options_obey_caps (my_options, caps, &supported_options, NULL))
  grl_media_source_search (my_source, "blah", interesting_keys, my_options, ...);
else // only use a subset of the options we wanted to pass
  grl_media_source_search (my_source, "blah", interesting_keys, supported_options, ...);

A GrlCaps can also be passed to grl_operation_options_new(). The created GrlOperationOptions instance would then check any change against its caps.

Functions

grl_caps_new ()

GrlCaps *
grl_caps_new (void);

Creates a new caps object.

Returns

a new caps object.

Since 0.2.0

grl_caps_get_key_filter ()

GList *
grl_caps_get_key_filter (GrlCaps *caps);

Parameters

caps

a GrlCaps instance

  

Returns

.

[transfer none][element-type GrlKeyID]

Since 0.2.0

grl_caps_get_key_range_filter ()

GList *
grl_caps_get_key_range_filter (GrlCaps *caps);

Parameters

caps

a GrlCaps instance

  

Returns

.

[transfer none][element-type GrlKeyID]

Since 0.2.0

grl_caps_get_type_filter ()

GrlTypeFilter
grl_caps_get_type_filter (GrlCaps *caps);

Parameters

caps

a GrlCaps instance

  

Returns

the supported GrlTypeFilter

Since 0.2.0

grl_caps_is_key_filter ()

gboolean
grl_caps_is_key_filter (GrlCaps *caps,
                        GrlKeyID key);

Checks if key is supported for filtering in caps .

Parameters

caps

a GrlCaps instance

  

key

a GrlKeyID

  

Returns

TRUE if key can be used for filtering

Since 0.2.0

grl_caps_is_key_range_filter ()

gboolean
grl_caps_is_key_range_filter (GrlCaps *caps,
                              GrlKeyID key);

Checks if key is supported for filtering by range in caps .

Parameters

caps

a grlCaps instance

  

key

a GrlKeyID

  

Returns

TRUE if key can be used for filtering

Since 0.2.0

grl_caps_set_key_filter ()

void
grl_caps_set_key_filter (GrlCaps *caps,
                         GList *keys);

Parameters

caps

a GrlCaps instance

  

keys

.

[transfer none][element-type GrlKeyID]

Since 0.2.0

grl_caps_set_key_range_filter ()

void
grl_caps_set_key_range_filter (GrlCaps *caps,
                               GList *keys);

Parameters

caps

a GrlCaps instance

  

keys

.

[transfer none][element-type GrlKeyID]

Since 0.2.0

grl_caps_set_type_filter ()

void
grl_caps_set_type_filter (GrlCaps *caps,
                          GrlTypeFilter filter);

Sets the supported filter capability.

Parameters

caps

a GrlCaps instance

  

filter

a GrlTypeFilter

  

Since 0.2.0

grl_caps_test_option ()

gboolean
grl_caps_test_option (GrlCaps *caps,
                      const gchar *key,
                      const GValue *value);

Checks whether (key , value ) are authorized by caps .

Parameters

caps

a GrlCaps instance

  

key

a key to test

  

value

the value corresponding to key to test against caps

 

Returns

TRUE if (key , value ) obey to caps , FALSE otherwise.

Since 0.2.0

Types and Values

GrlCaps

typedef struct _GrlCaps GrlCaps;

GrlCapsClass

typedef struct {
  GObjectClass parent;
} GrlCapsClass;

Grilo Capabilities class.

Members

GObjectClass parent;

the parent class structure

  

enum GrlTypeFilter

Type of media to allow.

Members

GRL_TYPE_FILTER_NONE

allow no content (only GrlMediaBox)

  

GRL_TYPE_FILTER_AUDIO

allow audio content

  

GRL_TYPE_FILTER_VIDEO

allow video content

  

GRL_TYPE_FILTER_IMAGE

allow image content

  

GRL_TYPE_FILTER_ALL

allow any type of content

  

See Also

GrlOperationOptions, grl_source_get_caps()

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