Struct NativeVideoEncoderProbe 

pub struct NativeVideoEncoderProbe {

    pub codec: NativeVideoCodec,
    pub encoder_name: String,
    pub class: NativeEncoderClass,
    pub hardware_accelerated: bool,
    pub capability_bits: u32,
    pub pixel_formats: Vec<String>,
    pub hardware_configs: Vec<NativeEncoderHardwareConfig>,
    pub accepts_yuv420p: bool,
    pub requires_hardware_frames: bool,
    pub advertised: bool,
    pub minimum_size: (u32, u32),
    pub software_open_error: Option<String>,
    pub software_packets: u32,
    pub rate_control: Vec<NativeRateControlProbe>,
}

What one registered video encoder declares, and what happened when alpha2 opened it on this machine.

Registration, advertisement and instantiation are three different claims, and only the third is the one an export depends on. This probe makes all three observable in one place, per platform, without an export.

Fields

codec: NativeVideoCodec

Logical codec this encoder implements.

encoder_name: String

FFmpeg short name.

class: NativeEncoderClass

Class taken from the encoder’s own capability bits.

hardware_accelerated: bool

Whether this row runs the encoder on the GPU.

capability_bits: u32

Raw AV_CODEC_CAP_* bits, so an unexpected class can be traced.

pixel_formats: Vec<String>

Pixel formats the encoder declares, or empty when it declares none.

hardware_configs: Vec<NativeEncoderHardwareConfig>

Hardware configurations the encoder declares.

accepts_yuv420p: bool

Whether AV_PIX_FMT_YUV420P is among the declared formats.

requires_hardware_frames: bool

Whether every declared format is a hardware one, so a software frame can never be sent to it. This is what keeps h264_vulkan unadvertised.

advertised: bool

Whether codec_capabilities advertises it for the YUV420P sink.

minimum_size: (u32, u32)

Smallest frame the encoder accepts, as alpha2 records it.

software_open_error: Option<String>

None when the encoder opened and produced at least one packet from a software YUV420P frame; otherwise why it did not.

software_packets: u32

Packets drained from that attempt.

rate_control: Vec<NativeRateControlProbe>

Which rate-control mechanisms opened, and with what options.

Trait Implementations

impl Clone for NativeVideoEncoderProbe

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 NativeVideoEncoderProbe

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

Formats the value using the given formatter.

impl Eq for NativeVideoEncoderProbe

impl PartialEq for NativeVideoEncoderProbe

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for NativeVideoEncoderProbe