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improve ExtXSessionKey

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Luro02 2020-03-17 15:48:02 +01:00
parent 4e41585cbd
commit 78edff9341
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1 changed files with 5 additions and 3 deletions
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8
src/tags/master_playlist/session_key.rs
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@ -9,13 +9,15 @@ use crate::types::{EncryptionMethod, ProtocolVersion};
use crate::utils::tag;
use crate::{Error, RequiredVersion};
/// # [4.3.4.5. EXT-X-SESSION-KEY]
///
/// The [`ExtXSessionKey`] tag allows encryption keys from [`MediaPlaylist`]s
/// to be specified in a [`MasterPlaylist`]. This allows the client to
/// preload these keys without having to read the [`MediaPlaylist`]s
/// first.
///
/// If an [`ExtXSessionKey`] is used, the values of [`ExtXKey::method`],
/// [`ExtXKey::key_format`] and [`ExtXKey::key_format_versions`] must match any
/// [`ExtXKey`] with the same uri field.
///
/// [`MediaPlaylist`]: crate::MediaPlaylist
/// [`MasterPlaylist`]: crate::MasterPlaylist
/// [4.3.4.5. EXT-X-SESSION-KEY]: https://tools.ietf.org/html/rfc8216#section-4.3.4.5
@ -70,7 +72,7 @@ impl TryFrom<ExtXKey> for ExtXSessionKey {
}
/// This tag requires the same [`ProtocolVersion`] that is returned by
/// `DecryptionKey::required_version`.
/// `ExtXKey::required_version`.
impl RequiredVersion for ExtXSessionKey {
fn required_version(&self) -> ProtocolVersion { self.0.required_version() }
}