Created
March 18, 2023 09:04
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testing widevine
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// Copyright 2016 Google Inc. All rights reserved. | |
// | |
// Use of this source code is governed by a BSD-style | |
// license that can be found in the LICENSE file or at | |
// https://developers.google.com/open-source/licenses/bsd | |
// | |
// This file defines Widevine Pssh Data proto format. | |
syntax = "proto2"; | |
package shaka.media; | |
message WidevinePsshData { | |
enum Algorithm { | |
UNENCRYPTED = 0; | |
AESCTR = 1; | |
}; | |
optional Algorithm algorithm = 1; | |
repeated bytes key_id = 2; | |
// Content provider name. | |
optional string provider = 3; | |
// A content identifier, specified by content provider. | |
optional bytes content_id = 4; | |
// The name of a registered policy to be used for this asset. | |
optional string policy = 6; | |
// Crypto period index, for media using key rotation. | |
optional uint32 crypto_period_index = 7; | |
// Optional protected context for group content. The grouped_license is a | |
// serialized SignedMessage. | |
optional bytes grouped_license = 8; | |
// Protection scheme identifying the encryption algorithm. Represented as one | |
// of the following 4CC values: 'cenc' (AES-CTR), 'cbc1' (AES-CBC), | |
// 'cens' (AES-CTR subsample), 'cbcs' (AES-CBC subsample). | |
optional uint32 protection_scheme = 9; | |
} | |
// Derived from WidevinePsshData. The JSON format of this proto is used in | |
// Widevine HLS DRM signaling v1. | |
// We cannot build JSON from WidevinePsshData as |key_id| is required to be in | |
// hex format, while |bytes| type is translated to base64 by JSON formatter, so | |
// we have to use |string| type and do hex conversion in the code. | |
message WidevineHeader { | |
repeated string key_ids = 2; | |
// Content provider name. | |
optional string provider = 3; | |
// A content identifier, specified by content provider. | |
optional bytes content_id = 4; | |
} |
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