Struct gstreamer::BufferPool
source · #[repr(transparent)]pub struct BufferPool { /* private fields */ }Expand description
A BufferPool is an object that can be used to pre-allocate and recycle
buffers of the same size and with the same properties.
A BufferPool is created with new().
Once a pool is created, it needs to be configured. A call to
BufferPoolExtManual::config() returns the current configuration structure from
the pool. With gst_buffer_pool_config_set_params() and
gst_buffer_pool_config_set_allocator() the bufferpool parameters and
allocator can be configured. Other properties can be configured in the pool
depending on the pool implementation.
A bufferpool can have extra options that can be enabled with
gst_buffer_pool_config_add_option(). The available options can be retrieved
with BufferPoolExt::options(). Some options allow for additional
configuration properties to be set.
After the configuration structure has been configured,
BufferPoolExtManual::set_config() updates the configuration in the pool. This can
fail when the configuration structure is not accepted.
After the pool has been configured, it can be activated with
BufferPoolExt::set_active(). This will preallocate the configured resources
in the pool.
When the pool is active, BufferPoolExtManual::acquire_buffer() can be used to
retrieve a buffer from the pool.
Buffers allocated from a bufferpool will automatically be returned to the
pool with BufferPoolExt::release_buffer() when their refcount drops to 0.
The bufferpool can be deactivated again with BufferPoolExt::set_active().
All further BufferPoolExtManual::acquire_buffer() calls will return an error. When
all buffers are returned to the pool they will be freed.
Implements
BufferPoolExt, GstObjectExt, glib::ObjectExt, BufferPoolExtManual
Implementations§
source§impl BufferPool
impl BufferPool
pub const NONE: Option<&'static BufferPool> = None
sourcepub fn new() -> BufferPool
pub fn new() -> BufferPool
Trait Implementations§
source§impl Clone for BufferPool
impl Clone for BufferPool
source§impl Debug for BufferPool
impl Debug for BufferPool
source§impl Default for BufferPool
impl Default for BufferPool
source§impl HasParamSpec for BufferPool
impl HasParamSpec for BufferPool
type ParamSpec = ParamSpecObject
§type SetValue = BufferPool
type SetValue = BufferPool
Preferred value to be used as setter for the associated ParamSpec.
type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, BufferPool>
fn param_spec_builder() -> Self::BuilderFn
source§impl Hash for BufferPool
impl Hash for BufferPool
source§impl<T: BufferPoolImpl> IsSubclassable<T> for BufferPool
impl<T: BufferPoolImpl> IsSubclassable<T> for BufferPool
source§fn class_init(klass: &mut Class<Self>)
fn class_init(klass: &mut Class<Self>)
Override the virtual methods of this class for the given subclass and do other class
initialization. Read more
source§fn instance_init(instance: &mut InitializingObject<T>)
fn instance_init(instance: &mut InitializingObject<T>)
Instance specific initialization. Read more
source§impl Ord for BufferPool
impl Ord for BufferPool
source§impl ParentClassIs for BufferPool
impl ParentClassIs for BufferPool
source§impl<OT: ObjectType> PartialEq<OT> for BufferPool
impl<OT: ObjectType> PartialEq<OT> for BufferPool
source§impl<OT: ObjectType> PartialOrd<OT> for BufferPool
impl<OT: ObjectType> PartialOrd<OT> for BufferPool
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self and other) and is used by the <=
operator. Read moresource§impl StaticType for BufferPool
impl StaticType for BufferPool
source§fn static_type() -> Type
fn static_type() -> Type
Returns the type identifier of
Self.impl Eq for BufferPool
impl IsA<Object> for BufferPool
impl Send for BufferPool
impl Sync for BufferPool
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