Struct VideoEncoder 

pub struct VideoEncoder { /* private fields */ }

A hardware video encoder.

Feed source frames with encode, which may return the access unit of an earlier frame, and collect the rest with flush at the end of the stream.

Implementations

impl VideoEncoder

pub fn new(config: EncoderConfig) -> Result<Self>

Opens an encoder for config.

On Linux the first V4L2 memory-to-memory device that produces the codec and accepts the input format is used. Setting EDGEFIRST_CODEC_V4L2_ENCODER to a device node uses that node only.

Errors

CodecError::InvalidConfig when config is invalid or the device rejects it, CodecError::UnsupportedFormat when no device accepts the input format, and CodecError::NoDevice when there is no encoder.

pub fn encode( &mut self, src: &TensorDyn, opts: &FrameOptions, ) -> Result<Option<EncodedFrame>>

Encodes src.

src must have the configured input format and, without a crop, the configured size. DMA-BUF sources are read in place: the call returns once the device has finished reading src, so the caller may reuse it afterwards. Every source of one stream must have the same row stride.

Returns the next finished access unit, which may belong to an earlier frame, or None when none is ready yet.

pub fn flush(&mut self) -> Result<Vec<EncodedFrame>>

Drains the encoder: returns every access unit not yet returned, in order. The encoder accepts new frames afterwards.

pub fn device(&self) -> String

The device that encodes, for logs (a device node on Linux).

Trait Implementations

impl Debug for VideoEncoder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.