Enum SurfaceQuality 

pub enum SurfaceQuality {
    Low,
    Medium,
    High,
    Ultra,
    Custom {
        quantizer: u8,
    },
}

Video quality preset. Higher quality uses more CPU / bandwidth.

• Low: speed 10, quantizer 180 — minimal CPU, visibly lossy
• Medium (default): speed 10, quantizer 120 — good balance
• High: speed 8, quantizer 80 — sharp, noticeable CPU use
• Ultra: speed 6, quantizer 1 — near-lossless, heavy CPU
• Custom: caller-specified AV1 quantizer (10–255)

Set via BLIT_SURFACE_QUALITY=low|medium|high|ultra.

Variants

Low

Medium

High

Ultra

Custom

Caller-specified AV1 quantizer (10–255). H.264 QP, encoder speed, and software-encoder bitrate are derived proportionally.

Fields

quantizer: u8

Implementations

impl SurfaceQuality

pub fn parse(value: &str) -> Option<Self>

pub fn from_wire(value: u8) -> Option<Self>

Decode from the wire quality byte in C2S_SURFACE_SUBSCRIBE.

• 0 → None (server default)
• 1–4 → named presets
• 10–255 → Custom { quantizer: value }
• 5–9 → reserved, treated as server default

pub fn h264_qp(self) -> u8

H.264 QP for constant-quality mode (0 = best, 51 = worst). Used by NVENC H.264 and VA-API H.264.

pub fn nvenc_av1_qp(self) -> u32

NVENC AV1 QP for constant-quality mode (0 = best, 255 = worst). Same scale as av1_quantizer / VA-API base_qindex.

pub fn av1_qp_for_vulkan(self) -> u8

AV1 QP for Vulkan Video encode (0 = best, 255 = worst). Same base_qindex scale as VA-API / NVENC.

Trait Implementations

impl Clone for SurfaceQuality

fn clone(&self) -> SurfaceQuality

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for SurfaceQuality

impl Debug for SurfaceQuality

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

Formats the value using the given formatter.

impl Default for SurfaceQuality

fn default() -> SurfaceQuality

Returns the “default value” for a type.

impl Eq for SurfaceQuality

impl PartialEq for SurfaceQuality

fn eq(&self, other: &SurfaceQuality) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SurfaceQuality