image_webp::vp8

Struct Vp8Decoder

pub struct Vp8Decoder<R> {Show 26 fields
    r: R,
    b: ArithmeticDecoder,
    mbwidth: u16,
    mbheight: u16,
    macroblocks: Vec<MacroBlock>,
    frame: Frame,
    segments_enabled: bool,
    segments_update_map: bool,
    segment: [Segment; 4],
    loop_filter_adjustments_enabled: bool,
    ref_delta: [i32; 4],
    mode_delta: [i32; 4],
    partitions: [ArithmeticDecoder; 8],
    num_partitions: u8,
    segment_tree_nodes: [TreeNode; 3],
    token_probs: Box<[[[[TreeNode; 11]; 3]; 8]; 4]>,
    prob_intra: u8,
    prob_skip_false: Option<u8>,
    top: Vec<MacroBlock>,
    left: MacroBlock,
    top_border_y: Vec<u8>,
    left_border_y: Vec<u8>,
    top_border_u: Vec<u8>,
    left_border_u: Vec<u8>,
    top_border_v: Vec<u8>,
    left_border_v: Vec<u8>,
}

Expand description

VP8 Decoder

Only decodes keyframes

Fields§

§r: R§b: ArithmeticDecoder§mbwidth: u16§mbheight: u16§macroblocks: Vec<MacroBlock>§frame: Frame§segments_enabled: bool§segments_update_map: bool§segment: [Segment; 4]§loop_filter_adjustments_enabled: bool§ref_delta: [i32; 4]§mode_delta: [i32; 4]§partitions: [ArithmeticDecoder; 8]§num_partitions: u8§segment_tree_nodes: [TreeNode; 3]§token_probs: Box<[[[[TreeNode; 11]; 3]; 8]; 4]>§prob_intra: u8§prob_skip_false: Option<u8>§top: Vec<MacroBlock>§left: MacroBlock§top_border_y: Vec<u8>§left_border_y: Vec<u8>§top_border_u: Vec<u8>§left_border_u: Vec<u8>§top_border_v: Vec<u8>§left_border_v: Vec<u8>

Implementations§

impl<R: Read> Vp8Decoder<R>

fn new(r: R) -> Self

Create a new decoder. The reader must present a raw vp8 bitstream to the decoder

fn update_token_probabilities(&mut self) -> Result<(), DecodingError>

fn init_partitions(&mut self, n: usize) -> Result<(), DecodingError>

fn read_quantization_indices(&mut self) -> Result<(), DecodingError>

fn read_loop_filter_adjustments(&mut self) -> Result<(), DecodingError>

fn read_segment_updates(&mut self) -> Result<(), DecodingError>

fn read_frame_header(&mut self) -> Result<(), DecodingError>

fn read_macroblock_header( &mut self, mbx: usize, ) -> Result<MacroBlock, DecodingError>

fn intra_predict_luma( &mut self, mbx: usize, mby: usize, mb: &MacroBlock, resdata: &[i32], )

fn intra_predict_chroma( &mut self, mbx: usize, mby: usize, mb: &MacroBlock, resdata: &[i32], )

fn read_coefficients( &mut self, block: &mut [i32; 16], p: usize, plane: usize, complexity: usize, dcq: i16, acq: i16, ) -> Result<bool, DecodingError>

fn read_residual_data( &mut self, mb: &mut MacroBlock, mbx: usize, p: usize, ) -> Result<[i32; 384], DecodingError>

fn loop_filter(&mut self, mbx: usize, mby: usize, mb: &MacroBlock)

Does loop filtering on the macroblock

fn calculate_filter_parameters(&self, macroblock: &MacroBlock) -> (u8, u8, u8)

pub fn decode_frame(r: R) -> Result<Frame, DecodingError>

Decodes the current frame

fn decode_frame_(self) -> Result<Frame, DecodingError>

Auto Trait Implementations§

impl<R> Freeze for Vp8Decoder<R>
where R: Freeze,

impl<R> RefUnwindSafe for Vp8Decoder<R>
where R: RefUnwindSafe,

impl<R> Send for Vp8Decoder<R>
where R: Send,

impl<R> Sync for Vp8Decoder<R>
where R: Sync,

impl<R> Unpin for Vp8Decoder<R>
where R: Unpin,

impl<R> UnwindSafe for Vp8Decoder<R>
where R: UnwindSafe,

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.