Struct VideoEncodeExtent 

pub struct VideoEncodeExtent {
    pub profile: &'static str,
    pub minimum: (u32, u32),
    pub maximum: (u32, u32),
    pub granularity: (u32, u32),
    pub max_p_picture_l0_references: u32,
    pub max_b_picture_l0_references: u32,
    pub max_l1_references: u32,
    pub rate_control_modes: Vec<&'static str>,
}

Coded extents and coding limits one video-encode profile has on a device.

Fields

profile: &'static str

The profile the codec’s Vulkan encoder opens on this device (H.264 constrained_baseline, main or high; HEVC main).

minimum: (u32, u32)

Smallest accepted width and height in samples.

maximum: (u32, u32)

Largest accepted width and height in samples.

granularity: (u32, u32)

VkVideoEncodeCapabilitiesKHR::encodeInputPictureGranularity, which FFmpeg aligns the coded size up to before the limits apply. So 158x62 can pass a 160x64 minimum while 64x48 fails; compare aligned sizes, not raw ones.

max_p_picture_l0_references: u32

maxPPictureL0ReferenceCount: references a P picture may use.

max_b_picture_l0_references: u32

maxBPictureL0ReferenceCount: forward references a B picture may use. Zero together with max_l1_references means no B pictures.

max_l1_references: u32

maxL1ReferenceCount: backward references a B picture may use.

rate_control_modes: Vec<&'static str>

VkVideoEncodeCapabilitiesKHR::rateControlModes as names: cbr, vbr, disabled (constant QP).

Implementations

impl VideoEncodeExtent

pub const fn supports_b_pictures(&self) -> bool

Whether the device can encode B pictures at all.

impl VideoEncodeExtent

pub const fn accepts(&self, width: u32, height: u32) -> bool

Whether an output of this size reaches the encoder’s coded limits.

pub const fn coded(&self, width: u32, height: u32) -> (u32, u32)

The coded extent an output of this size is encoded at.

Trait Implementations

impl Clone for VideoEncodeExtent

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VideoEncodeExtent

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

Formats the value using the given formatter.

impl Eq for VideoEncodeExtent

impl PartialEq for VideoEncodeExtent

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for VideoEncodeExtent