Trait cros_codecs::decoder::DecoderFormatNegotiator

pub trait DecoderFormatNegotiator<'a, M> {
    // Required methods
    fn stream_info(&self) -> &StreamInfo;
    fn surface_pool(&mut self) -> &mut dyn SurfacePool<M>;
    fn try_format(&mut self, format: DecodedFormat) -> Result<()>;
}

Trait for objects allowing to negotiate the output format of a decoder.

A decoder always has a valid output format set, but that format can change if the stream requests it. When this happens, the decoder stops accepting new input and a FormatChanged event is emitted, carrying a negotiator trait object that allows the client to acknowledge that the format change took place, and (in the future) negotiate its specifics.

When the object is dropped, the decoder can accept and process new input again.

Required Methods

fn stream_info(&self) -> &StreamInfo

Returns the current decoding parameters, as extracted from the stream.

fn surface_pool(&mut self) -> &mut dyn SurfacePool<M>

Returns the surface pool in use for the decoder, set up for the new format.

fn try_format(&mut self, format: DecodedFormat) -> Result<()>

Implementors