Trait gstreamer::prelude::PresetExt

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pub trait PresetExt: IsA<Preset> + Sealed + 'static {
    // Provided methods
    fn delete_preset(&self, name: &str) -> Result<(), BoolError> { ... }
    fn meta(&self, name: &str, tag: &str) -> Option<GString> { ... }
    fn preset_names(&self) -> Vec<GString> { ... }
    fn property_names(&self) -> Vec<GString> { ... }
    fn is_editable(&self) -> bool { ... }
    fn load_preset(&self, name: &str) -> Result<(), BoolError> { ... }
    fn rename_preset(
        &self,
        old_name: &str,
        new_name: &str,
    ) -> Result<(), BoolError> { ... }
    fn save_preset(&self, name: &str) -> Result<(), BoolError> { ... }
    fn set_meta(
        &self,
        name: &str,
        tag: &str,
        value: Option<&str>,
    ) -> Result<(), BoolError> { ... }
}
Expand description

Trait containing all Preset methods.

§Implementors

Preset

Provided Methods§

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fn delete_preset(&self, name: &str) -> Result<(), BoolError>

Delete the given preset.

§name

preset name to remove

§Returns

true for success, false if e.g. there is no preset with that name

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fn meta(&self, name: &str, tag: &str) -> Option<GString>

Gets the value for an existing meta data tag. Meta data tag names can be something like e.g. “comment”. Returned values need to be released when done.

§name

preset name

§tag

meta data item name

§Returns

true for success, false if e.g. there is no preset with that name or no value for the given tag

§value

value

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fn preset_names(&self) -> Vec<GString>

Get a copy of preset names as a None terminated string array.

§Returns

list with names, use g_strfreev() after usage.

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fn property_names(&self) -> Vec<GString>

Get a the names of the GObject properties that can be used for presets.

§Returns

an array of property names which should be freed with g_strfreev() after use.

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fn is_editable(&self) -> bool

Check if one can add new presets, change existing ones and remove presets.

§Returns

true if presets are editable or false if they are static

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fn load_preset(&self, name: &str) -> Result<(), BoolError>

Load the given preset.

§name

preset name to load

§Returns

true for success, false if e.g. there is no preset with that name

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fn rename_preset(&self, old_name: &str, new_name: &str) -> Result<(), BoolError>

Renames a preset. If there is already a preset by the new_name it will be overwritten.

§old_name

current preset name

§new_name

new preset name

§Returns

true for success, false if e.g. there is no preset with old_name

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fn save_preset(&self, name: &str) -> Result<(), BoolError>

Save the current object settings as a preset under the given name. If there is already a preset by this name it will be overwritten.

§name

preset name to save

§Returns

true for success, false

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fn set_meta( &self, name: &str, tag: &str, value: Option<&str>, ) -> Result<(), BoolError>

Sets a new value for an existing meta data item or adds a new item. Meta data tag names can be something like e.g. “comment”. Supplying None for the value will unset an existing value.

§name

preset name

§tag

meta data item name

§value

new value

§Returns

true for success, false if e.g. there is no preset with that name

Object Safety§

This trait is not object safe.

Implementors§

source§

impl<O: IsA<Preset>> PresetExt for O