Trait gstreamer_base::subclass::base_transform::BaseTransformImpl

pub trait BaseTransformImpl: BaseTransformImplExt + ElementImpl {
    const MODE: BaseTransformMode;
    const PASSTHROUGH_ON_SAME_CAPS: bool;
    const TRANSFORM_IP_ON_PASSTHROUGH: bool;

    // Provided methods
    fn start(&self) -> Result<(), ErrorMessage> { ... }
    fn stop(&self) -> Result<(), ErrorMessage> { ... }
    fn transform_caps(
        &self,
        direction: PadDirection,
        caps: &Caps,
        filter: Option<&Caps>,
    ) -> Option<Caps> { ... }
    fn fixate_caps(
        &self,
        direction: PadDirection,
        caps: &Caps,
        othercaps: Caps,
    ) -> Caps { ... }
    fn set_caps(
        &self,
        incaps: &Caps,
        outcaps: &Caps,
    ) -> Result<(), LoggableError> { ... }
    fn accept_caps(&self, direction: PadDirection, caps: &Caps) -> bool { ... }
    fn query(&self, direction: PadDirection, query: &mut QueryRef) -> bool { ... }
    fn transform_size(
        &self,
        direction: PadDirection,
        caps: &Caps,
        size: usize,
        othercaps: &Caps,
    ) -> Option<usize> { ... }
    fn unit_size(&self, caps: &Caps) -> Option<usize> { ... }
    fn sink_event(&self, event: Event) -> bool { ... }
    fn src_event(&self, event: Event) -> bool { ... }
    fn prepare_output_buffer(
        &self,
        inbuf: InputBuffer<'_>,
    ) -> Result<PrepareOutputBufferSuccess, FlowError> { ... }
    fn transform(
        &self,
        inbuf: &Buffer,
        outbuf: &mut BufferRef,
    ) -> Result<FlowSuccess, FlowError> { ... }
    fn transform_ip(
        &self,
        buf: &mut BufferRef,
    ) -> Result<FlowSuccess, FlowError> { ... }
    fn transform_ip_passthrough(
        &self,
        buf: &Buffer,
    ) -> Result<FlowSuccess, FlowError> { ... }
    fn propose_allocation(
        &self,
        decide_query: Option<&Allocation>,
        query: &mut Allocation,
    ) -> Result<(), LoggableError> { ... }
    fn decide_allocation(
        &self,
        query: &mut Allocation,
    ) -> Result<(), LoggableError> { ... }
    fn copy_metadata(
        &self,
        inbuf: &BufferRef,
        outbuf: &mut BufferRef,
    ) -> Result<(), LoggableError> { ... }
    fn transform_meta<'a>(
        &self,
        outbuf: &mut BufferRef,
        meta: MetaRef<'a, Meta>,
        inbuf: &'a BufferRef,
    ) -> bool { ... }
    fn before_transform(&self, inbuf: &BufferRef) { ... }
    fn submit_input_buffer(
        &self,
        is_discont: bool,
        inbuf: Buffer,
    ) -> Result<FlowSuccess, FlowError> { ... }
    fn generate_output(&self) -> Result<GenerateOutputSuccess, FlowError> { ... }
}

Required Associated Constants

const MODE: BaseTransformMode

const PASSTHROUGH_ON_SAME_CAPS: bool

const TRANSFORM_IP_ON_PASSTHROUGH: bool

Provided Methods

fn start(&self) -> Result<(), ErrorMessage>

fn stop(&self) -> Result<(), ErrorMessage>

fn transform_caps( &self, direction: PadDirection, caps: &Caps, filter: Option<&Caps>, ) -> Option<Caps>

fn fixate_caps( &self, direction: PadDirection, caps: &Caps, othercaps: Caps, ) -> Caps

fn set_caps(&self, incaps: &Caps, outcaps: &Caps) -> Result<(), LoggableError>

fn accept_caps(&self, direction: PadDirection, caps: &Caps) -> bool

fn query(&self, direction: PadDirection, query: &mut QueryRef) -> bool

fn transform_size( &self, direction: PadDirection, caps: &Caps, size: usize, othercaps: &Caps, ) -> Option<usize>

fn unit_size(&self, caps: &Caps) -> Option<usize>

fn sink_event(&self, event: Event) -> bool

fn src_event(&self, event: Event) -> bool

fn prepare_output_buffer( &self, inbuf: InputBuffer<'_>, ) -> Result<PrepareOutputBufferSuccess, FlowError>

fn transform( &self, inbuf: &Buffer, outbuf: &mut BufferRef, ) -> Result<FlowSuccess, FlowError>

fn transform_ip(&self, buf: &mut BufferRef) -> Result<FlowSuccess, FlowError>

fn transform_ip_passthrough( &self, buf: &Buffer, ) -> Result<FlowSuccess, FlowError>

fn propose_allocation( &self, decide_query: Option<&Allocation>, query: &mut Allocation, ) -> Result<(), LoggableError>

fn decide_allocation(&self, query: &mut Allocation) -> Result<(), LoggableError>

fn copy_metadata( &self, inbuf: &BufferRef, outbuf: &mut BufferRef, ) -> Result<(), LoggableError>

fn transform_meta<'a>( &self, outbuf: &mut BufferRef, meta: MetaRef<'a, Meta>, inbuf: &'a BufferRef, ) -> bool

fn before_transform(&self, inbuf: &BufferRef)

fn submit_input_buffer( &self, is_discont: bool, inbuf: Buffer, ) -> Result<FlowSuccess, FlowError>

fn generate_output(&self) -> Result<GenerateOutputSuccess, FlowError>

Object Safety

This trait is not object safe.

Implementors