// Copyright 2022 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
library fuchsia.drm;

/// The maximum number of `EncryptionSubsampleEntry`s allowed.
const MAX_SUBSAMPLE_ENTRIES uint32 = 16;

/// Properties accompanying a packet in an encrypted stream.
type PacketEncryptionProperties = table {
    /// Indicates whether the packet is encrypted.
    1: is_encrypted bool;

    /// If specified, overrides the previous key id.
    2: key_id EncryptionKeyId;

    /// If specified, overrides the previous initialization vector.
    3: init_vector EncryptionInitVector;

    /// If specified, overrides the previous encryption pattern.
    4: pattern EncryptionPattern;

    /// Subsamples to decrypt. An absent or empty list indicates whole sample
    /// decryption.
    5: subsamples vector<EncryptionSubsampleEntry>:MAX_SUBSAMPLE_ENTRIES;
};