Native32 Emulator

pub enum Action {
    // Arithmetic
    Add, Sub, Mul, Div, Modulo,
    // Comparison
    Less, Greater, Equal,
    // Control Flow
    Jump, JumpIf, Call, Return,
    // Sprite & Movie
    CreateSprite, CloneSprite,
    SetVisible, GotoFrame,
    // I/O
    PlaySound, PlayMusic,
    StopSound, StopMusic,
    // ... 36 opcodes total
}

// Pure-Rust MPEG-1 video decoder
// Ported from PL_MPEG — zero C dependencies

pub struct Mpeg1Decoder {
    buffer: BitBuffer,
    block: [i16; 64],
    dc_predictor: [i16; 3],
    quantizer_matrix: [[u8; 64]; 2],
}

impl Mpeg1Decoder {
    pub fn decode_frame(
        &mut self,
        frame: &mut [u8],
    ) -> Result<()> {
        // Full MPEG-1 I/B/P frame decode
        // IDCT, motion compensation, YUV→RGB
    }
}