Module encoder 

VP8 lossy encoder for WebP.

This module provides a simplified VP8 encoder that produces valid VP8 keyframe bitstreams suitable for embedding in a WebP container. The encoder implements:

• RGB to YUV 4:2:0 color space conversion (BT.601)
• 16x16 macroblock processing with DC intra prediction
• Forward 4x4 DCT transform
• Coefficient quantization with quality-based QP mapping
• Boolean arithmetic coding (VP8 range coder)
• VP8 keyframe bitstream assembly per RFC 6386

Limitations

• Only generates keyframes (no inter prediction / P-frames)
• Uses DC prediction mode exclusively (simplest intra prediction)
• Single DCT partition (no multi-partition)
• No rate-distortion optimization

References

• RFC 6386: VP8 Data Format and Decoding Guide

Structs

WebPLossyEncoder

VP8 lossy encoder for WebP.