Struct ConnectCapabilities 

pub struct ConnectCapabilities {
    pub fourcc_list: Vec<String>,
    pub video_fourcc_info_map: FourCcInfoMap,
    pub audio_fourcc_info_map: FourCcInfoMap,
    pub caps_ex: u32,
    pub object_encoding: Option<u8>,
}

Capability block exchanged in the NetConnection connect command.

Owns all four spec entries (fourCcList, videoFourCcInfoMap, audioFourCcInfoMap, capsEx) plus the long-standing objectEncoding byte. Encoded into the existing Command Object by Self::encode_into without touching the surrounding key order, and parsed back with Self::from_amf0 from either the client’s Command Object or the server’s _result properties object.

A default-constructed instance is empty — is_empty() is true and encode_into writes nothing, so a caller composing a legacy AVC / AAC-only connect command keeps the pre-2023 byte layout exactly.

Fields

fourcc_list: Vec<String>

fourCcList — Enhanced RTMP v1 strict-array of supported FourCC strings (e.g. "av01", "hvc1"). The v2 spec deprecates this on the client side in favour of audio/videoFourCcInfoMap, but servers are encouraged to keep supporting both for older clients.

video_fourcc_info_map: FourCcInfoMap

videoFourCcInfoMap — v2 per-codec capability bits for video codecs.

audio_fourcc_info_map: FourCcInfoMap

audioFourCcInfoMap — v2 per-codec capability bits for audio codecs.

caps_ex: u32

capsEx — v2 bag of extended capability bits.

object_encoding: Option<u8>

objectEncoding — 0 for AMF0-only, 3 for AMF0+AMF3.

Implementations

impl ConnectCapabilities

pub fn new() -> Self

Empty capability block — encodes to nothing.

pub fn is_empty(&self) -> bool

True when every field is empty / default.

pub fn supports_caps_ex(&self, mask: u32) -> bool

Test for a specific CapsExMask flag.

pub fn has_fourcc(&self, key: &str) -> bool

True when fourcc_list includes either the wildcard "*" or the literal FourCC key.

pub fn encode_into(&self, pairs: &mut Vec<(String, Amf0Value)>)

Append our capability properties to a command-object pair list.

Each property is only appended when the corresponding field is non-default, so encoding an empty block adds zero bytes. Caller keeps any other Command Object properties they want around the call site — pairs is mutated in place.

pub fn from_amf0(v: &Amf0Value) -> Self

Parse any subset of capability properties out of an Object / ECMA-array. Missing properties stay at their default; malformed values are silently ignored (the spec’s “fail gracefully” rule — a forged capsEx = "abc" from a stale peer must not abort the connect handshake).

Trait Implementations

impl Clone for ConnectCapabilities

fn clone(&self) -> ConnectCapabilities

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConnectCapabilities

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

Formats the value using the given formatter.

impl Default for ConnectCapabilities

fn default() -> ConnectCapabilities

Returns the “default value” for a type.

impl Eq for ConnectCapabilities

impl PartialEq for ConnectCapabilities

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ConnectCapabilities