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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "media/cdm/aes_decryptor.h" | 5 #include "media/cdm/aes_decryptor.h" |
6 | 6 |
7 #include <stddef.h> | 7 #include <stddef.h> |
8 #include <list> | 8 #include <list> |
9 #include <utility> | 9 #include <utility> |
10 #include <vector> | 10 #include <vector> |
11 | 11 |
12 #include "base/logging.h" | 12 #include "base/logging.h" |
13 #include "base/macros.h" | 13 #include "base/macros.h" |
14 #include "base/strings/string_number_conversions.h" | 14 #include "base/strings/string_number_conversions.h" |
15 #include "crypto/encryptor.h" | 15 #include "crypto/encryptor.h" |
16 #include "crypto/symmetric_key.h" | 16 #include "crypto/symmetric_key.h" |
17 #include "media/base/audio_decoder_config.h" | 17 #include "media/base/audio_decoder_config.h" |
18 #include "media/base/cdm_key_information.h" | 18 #include "media/base/cdm_key_information.h" |
19 #include "media/base/cdm_promise.h" | 19 #include "media/base/cdm_promise.h" |
20 #include "media/base/decoder_buffer.h" | 20 #include "media/base/decoder_buffer.h" |
21 #include "media/base/decrypt_config.h" | 21 #include "media/base/decrypt_config.h" |
22 #include "media/base/limits.h" | 22 #include "media/base/limits.h" |
23 #include "media/base/video_decoder_config.h" | 23 #include "media/base/video_decoder_config.h" |
24 #include "media/base/video_frame.h" | 24 #include "media/base/video_frame.h" |
25 #include "media/cdm/json_web_key.h" | 25 #include "media/cdm/json_web_key.h" |
26 #include "media/media_features.h" | |
27 | 26 |
28 #if BUILDFLAG(USE_PROPRIETARY_CODECS) | 27 #if defined(USE_PROPRIETARY_CODECS) |
29 #include "media/cdm/cenc_utils.h" | 28 #include "media/cdm/cenc_utils.h" |
30 #endif | 29 #endif |
31 | 30 |
32 namespace media { | 31 namespace media { |
33 | 32 |
34 // Keeps track of the session IDs and DecryptionKeys. The keys are ordered by | 33 // Keeps track of the session IDs and DecryptionKeys. The keys are ordered by |
35 // insertion time (last insertion is first). It takes ownership of the | 34 // insertion time (last insertion is first). It takes ownership of the |
36 // DecryptionKeys. | 35 // DecryptionKeys. |
37 class AesDecryptor::SessionIdDecryptionKeyMap { | 36 class AesDecryptor::SessionIdDecryptionKeyMap { |
38 // Use a std::list to actually hold the data. Insertion is always done | 37 // Use a std::list to actually hold the data. Insertion is always done |
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273 case EmeInitDataType::WEBM: | 272 case EmeInitDataType::WEBM: |
274 // |init_data| is simply the key needed. | 273 // |init_data| is simply the key needed. |
275 if (init_data.size() < limits::kMinKeyIdLength || | 274 if (init_data.size() < limits::kMinKeyIdLength || |
276 init_data.size() > limits::kMaxKeyIdLength) { | 275 init_data.size() > limits::kMaxKeyIdLength) { |
277 promise->reject(CdmPromise::NOT_SUPPORTED_ERROR, 0, "Incorrect length"); | 276 promise->reject(CdmPromise::NOT_SUPPORTED_ERROR, 0, "Incorrect length"); |
278 return; | 277 return; |
279 } | 278 } |
280 keys.push_back(init_data); | 279 keys.push_back(init_data); |
281 break; | 280 break; |
282 case EmeInitDataType::CENC: | 281 case EmeInitDataType::CENC: |
283 #if BUILDFLAG(USE_PROPRIETARY_CODECS) | 282 #if defined(USE_PROPRIETARY_CODECS) |
284 // |init_data| is a set of 0 or more concatenated 'pssh' boxes. | 283 // |init_data| is a set of 0 or more concatenated 'pssh' boxes. |
285 if (!GetKeyIdsForCommonSystemId(init_data, &keys)) { | 284 if (!GetKeyIdsForCommonSystemId(init_data, &keys)) { |
286 promise->reject(CdmPromise::NOT_SUPPORTED_ERROR, 0, | 285 promise->reject(CdmPromise::NOT_SUPPORTED_ERROR, 0, |
287 "No supported PSSH box found."); | 286 "No supported PSSH box found."); |
288 return; | 287 return; |
289 } | 288 } |
290 break; | 289 break; |
291 #else | 290 #else |
292 promise->reject(CdmPromise::NOT_SUPPORTED_ERROR, 0, | 291 promise->reject(CdmPromise::NOT_SUPPORTED_ERROR, 0, |
293 "Initialization data type CENC is not supported."); | 292 "Initialization data type CENC is not supported."); |
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617 bool AesDecryptor::DecryptionKey::Init() { | 616 bool AesDecryptor::DecryptionKey::Init() { |
618 CHECK(!secret_.empty()); | 617 CHECK(!secret_.empty()); |
619 decryption_key_ = | 618 decryption_key_ = |
620 crypto::SymmetricKey::Import(crypto::SymmetricKey::AES, secret_); | 619 crypto::SymmetricKey::Import(crypto::SymmetricKey::AES, secret_); |
621 if (!decryption_key_) | 620 if (!decryption_key_) |
622 return false; | 621 return false; |
623 return true; | 622 return true; |
624 } | 623 } |
625 | 624 |
626 } // namespace media | 625 } // namespace media |
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