Struct WebPLossyEncoder 

pub struct WebPLossyEncoder { /* private fields */ }

VP8 lossy encoder for WebP.

Produces valid VP8 keyframe bitstreams that can be embedded in a WebP RIFF container. The encoder generates intra-only (keyframe) frames using DC prediction and a configurable quality parameter.

Examples

use oximedia_codec::webp::encoder::WebPLossyEncoder;

let encoder = WebPLossyEncoder::new(75);

// 2x2 red image
let rgb = [255, 0, 0, 255, 0, 0, 255, 0, 0, 255, 0, 0];
let vp8_data = encoder.encode_rgb(&rgb, 2, 2).expect("encode");

// The output starts with a valid VP8 frame tag
assert!(!vp8_data.is_empty());

Implementations

impl WebPLossyEncoder

pub fn new(quality: u8) -> Self

Creates a new lossy encoder with the given quality (0-100).

• 0 = lowest quality / smallest size
• 100 = highest quality / largest size

pub fn encode_rgb( &self, data: &[u8], width: u32, height: u32, ) -> CodecResult<Vec<u8>>

Encodes RGB data to a VP8 bitstream (without RIFF container).

The input data must contain width * height * 3 bytes in row-major R, G, B order (8 bits per component).

Returns the raw VP8 bitstream bytes suitable for wrapping in a WebP RIFF container.

Errors

Returns CodecError::InvalidParameter if dimensions are zero or the data length does not match width * height * 3.

pub fn encode_rgba( &self, data: &[u8], width: u32, height: u32, ) -> CodecResult<(Vec<u8>, Vec<u8>)>

Encodes RGBA data to VP8 bitstream + separate alpha channel.

Returns (vp8_data, alpha_data) where alpha_data contains the raw alpha plane bytes (width * height, row-major, uncompressed).

Errors

Returns CodecError::InvalidParameter if dimensions are zero or the data length does not match width * height * 4.