Enum av_format::muxer::Writer

pub enum Writer<WO = Cursor<Vec<u8>>, WS = Cursor<Vec<u8>>> {
    NonSeekable(WO, u64),
    Seekable(WS),
}

Runtime wrapper around either a Write or a [Write + Seek] trait object which supports querying for seek support.

Variants

NonSeekable(WO, u64)

A writer which does not support seeking, e.g. stdout.

Seekable(WS)

A writer which does support seeking, e.g. a file or in-memory buffer.

Implementations

impl<WO: Write> Writer<WO, Cursor<Vec<u8>>>

pub fn from_nonseekable(inner: WO) -> Self

Creates a Writer from an object that implements the Write trait.

impl<WS: Write + Seek> Writer<Cursor<Vec<u8>>, WS>

pub fn from_seekable(inner: WS) -> Self

Creates a Writer from an object that implements both Write and Seek traits.

impl<WO: Write, WS: Write + Seek> Writer<WO, WS>

pub fn is_seekable(&self) -> bool

Returns whether the Writer can seek within the source.

pub fn position(&mut self) -> Result<u64>

Returns stream position.

pub fn non_seekable_object(&self) -> Option<(&WO, u64)>

Returns a reference to the non-seekable object whether is present.

pub fn seekable_object(&self) -> Option<&WS>

Returns a reference to the seekable object whether is present.

Trait Implementations

impl<WO: Write, WS: Write + Seek> Seek for Writer<WO, WS>

fn seek(&mut self, seek: SeekFrom) -> Result<u64>

Seek to an offset, in bytes, in a stream.

fn rewind(&mut self) -> Result<(), Error>

Rewind to the beginning of a stream.

fn stream_len(&mut self) -> Result<u64, Error>

🔬This is a nightly-only experimental API. (seek_stream_len)

Returns the length of this stream (in bytes).

fn stream_position(&mut self) -> Result<u64, Error>

Returns the current seek position from the start of the stream.

impl<WO: Write, WS: Write + Seek> Write for Writer<WO, WS>

fn write(&mut self, bytes: &[u8]) -> Result<usize>

Write a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

🔬This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Self

Creates a “by reference” adapter for this instance of Write.