Struct FfmpegTransformer 

pub struct FfmpegTransformer {
    pub pipeline: FfmpegPipeline,
    pub pool: Arc<FfmpegPool>,
    pub cost_hint: u32,
}

Transformer that routes through the shared pool. Adopters create one per FfmpegPipeline they register.

Fields

pipeline: FfmpegPipeline

pool: Arc<FfmpegPool>

cost_hint: u32

Trait Implementations

impl Transformer for FfmpegTransformer

fn source_kind(&self) -> BufferKind

fn sink_kind(&self) -> BufferKind

fn backend(&self) -> TransformerBackend

fn cost_hint(&self) -> u32

Relative cost. Dijkstra’s shortest-path picks the path with the smallest sum. Native transcoders should be ~1; ffmpeg subprocess ~10 so native wins when both exist.

fn transform(&self, input: &ZeroCopyBuffer) -> Result<ZeroCopyBuffer, OtsError>

Perform the conversion. input.kind() MUST equal Self::source_kind; the returned buffer’s kind() MUST equal Self::sink_kind. The pipeline verifies this invariant to catch registry drift.