Trait gstreamer::prelude::BufferPoolExt

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pub trait BufferPoolExt: IsA<BufferPool> + Sealed + 'static {
    // Provided methods
    fn options(&self) -> Vec<GString> { ... }
    fn has_option(&self, option: &str) -> bool { ... }
    fn is_active(&self) -> bool { ... }
    fn release_buffer(&self, buffer: Buffer) { ... }
    fn set_active(&self, active: bool) -> Result<(), BoolError> { ... }
    fn set_flushing(&self, flushing: bool) { ... }
}
Expand description

Trait containing all BufferPool methods.

§Implementors

BufferPool

Provided Methods§

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

Gets a None terminated array of string with supported bufferpool options for self. An option would typically be enabled with gst_buffer_pool_config_add_option().

§Returns

a None terminated array of strings.

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fn has_option(&self, option: &str) -> bool

Checks if the bufferpool supports option.

§option

an option

§Returns

true if the buffer pool contains option.

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fn is_active(&self) -> bool

Checks if self is active. A pool can be activated with the set_active() call.

§Returns

true when the pool is active.

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fn release_buffer(&self, buffer: Buffer)

Releases buffer to self. buffer should have previously been allocated from self with BufferPoolExtManual::acquire_buffer().

This function is usually called automatically when the last ref on buffer disappears.

§buffer

a Buffer

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fn set_active(&self, active: bool) -> Result<(), BoolError>

Controls the active state of self. When the pool is inactive, new calls to BufferPoolExtManual::acquire_buffer() will return with FlowReturn::Flushing.

Activating the bufferpool will preallocate all resources in the pool based on the configuration of the pool.

Deactivating will free the resources again when there are no outstanding buffers. When there are outstanding buffers, they will be freed as soon as they are all returned to the pool.

§active

the new active state

§Returns

false when the pool was not configured or when preallocation of the buffers failed.

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fn set_flushing(&self, flushing: bool)

Enables or disables the flushing state of a self without freeing or allocating buffers.

§flushing

whether to start or stop flushing

Object Safety§

This trait is not object safe.

Implementors§