Struct Yuv420pFrameBuffer 

pub struct Yuv420pFrameBuffer { /* private fields */ }

A reusable FFmpeg YUV420P frame the caller writes into directly.

Avoids yuv420p_frame’s per-frame allocation and copy. Yuv420pFrameBuffer::begin_write returns plane memory only once FFmpeg no longer shares the buffer, copying it if needed.

Implementations

impl Yuv420pFrameBuffer

pub fn new(width: i32, height: i32) -> Result<Yuv420pFrameBuffer, BridgeError>

Allocates one reusable frame for this exact coded size.

Errors

Returns an error for a non-positive size or a failed allocation.

pub fn with_format( width: i32, height: i32, format: i32, planes: &[(usize, usize)], ) -> Result<Yuv420pFrameBuffer, BridgeError>

Allocates one reusable frame of format; planes gives each plane’s visible bytes per row and rows in FFmpeg order.

Errors

Returns an error for a non-positive size, a failed allocation, or planes the format lacks.

pub fn begin_write_planes( &mut self, ) -> Result<Vec<(&mut [u8], usize)>, BridgeError>

Each plane’s memory and stride after making the frame unshared, for any format.

Errors

As Self::begin_write.

pub const fn dimensions(&self) -> (usize, usize)

Luma width and height in pixels.

pub fn begin_write(&mut self) -> Result<Yuv420pFramePlanes<'_>, BridgeError>

Returns the plane memory to overwrite, after making the frame unshared.

Errors

Returns an error when the buffer cannot be made writable or its planes changed layout.

pub fn set_presentation(&mut self, pts: i64, time_base: AVRational)

Stamps the presentation timestamp this frame will be encoded with.

pub const fn frame(&self) -> &AVFrame

The frame to hand to an encoder.

pub const fn size(&self) -> (usize, usize)

Coded luma dimensions this buffer was allocated for.

Trait Implementations

impl Debug for Yuv420pFrameBuffer

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

Formats the value using the given formatter.