| // Copyright 2021 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SYSTEM_API_CONSTANTS_CDM_OEMCRYPTO_H_ |
| #define SYSTEM_API_CONSTANTS_CDM_OEMCRYPTO_H_ |
| |
| // Constants relating to buffer sizes and layout used by cdm-oemcrypto daemon |
| // to create buffers that are later processed by Chrome for video decoding. |
| namespace cdm_oemcrypto { |
| // Total header size at the front of the buffer before the video data. |
| constexpr size_t kSecureBufferHeaderSize = 1024; |
| |
| // Marker bytes at the beginning of the header and corresponding size. |
| constexpr char kSecureBufferTag[] = "OECARCSB"; |
| constexpr size_t kSecureBufferTagLen = sizeof(kSecureBufferTag) - 1; |
| |
| // Offset from beginning of header to the protobuf. There is a uint32_t |
| // after the tag to indicate the size of the protobuf. |
| constexpr size_t kSecureBufferProtoOffset = |
| kSecureBufferTagLen + sizeof(uint32_t); |
| |
| } // namespace cdm_oemcrypto |
| #endif // SYSTEM_API_CONSTANTS_CDM_OEMCRYPTO_H_ |
