Enum devices::virtio::video::decoder::backend::DecoderEvent

pub enum DecoderEvent {
    ProvidePictureBuffers {
        min_num_buffers: u32,
        width: i32,
        height: i32,
        visible_rect: Rect,
    },
    PictureReady {
        picture_buffer_id: i32,
        timestamp: u64,
    },
    NotifyEndOfBitstreamBuffer(u32),
    NotifyError(VideoError),
    FlushCompleted(Result<(), VideoError>),
    ResetCompleted(Result<(), VideoError>),
}

Variants

ProvidePictureBuffers

Fields

min_num_buffers: u32

width: i32

height: i32

visible_rect: Rect

Emitted when the device knows the buffer format it will need to decode frames, and how many buffers it will need. The decoder is supposed to call set_output_parameters() to confirm the pixel format and actual number of buffers used, and provide buffers of the requested dimensions using use_output_buffer().

PictureReady

Fields

picture_buffer_id: i32

timestamp: u64

Emitted when the decoder is done decoding a picture. picture_buffer_id corresponds to the argument of the same name passed to use_output_buffer() or reuse_output_buffer(). bitstream_id corresponds to the argument of the same name passed to decode() and can be used to match decoded frames to the input buffer they were produced from.

NotifyEndOfBitstreamBuffer(u32)

Emitted when an input buffer passed to decode() is not used by the device anymore and can be reused by the decoder. The parameter corresponds to the timestamp argument passed to decode().

NotifyError(VideoError)

Emitted when a decoding error has occured.

FlushCompleted(Result<(), VideoError>)

Emitted after flush() has been called to signal that the flush is completed.

ResetCompleted(Result<(), VideoError>)

Emitted after reset() has been called to signal that the reset is completed.

Trait Implementations

impl Debug for DecoderEvent

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

Formats the value using the given formatter.

impl From<Event> for DecoderEvent

fn from(event: Event) -> Self

Converts to this type from the input type.