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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/base/key_systems.h" | 5 #include "media/base/key_systems.h" |
| 6 | 6 |
| 7 #include <string> | 7 #include <string> |
| 8 | 8 |
| 9 #include "base/containers/hash_tables.h" | 9 #include "base/containers/hash_tables.h" |
| 10 #include "base/lazy_instance.h" | 10 #include "base/lazy_instance.h" |
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| 715 SupportedCodecs codec = GetCodecForString(codecs[i]); | 715 SupportedCodecs codec = GetCodecForString(codecs[i]); |
| 716 if ((codec & key_system_codec_mask & container_codec_mask) == 0) | 716 if ((codec & key_system_codec_mask & container_codec_mask) == 0) |
| 717 return EmeConfigRule::NOT_SUPPORTED; | 717 return EmeConfigRule::NOT_SUPPORTED; |
| 718 #if defined(OS_ANDROID) | 718 #if defined(OS_ANDROID) |
| 719 // Check whether the codec supports a hardware-secure mode. The goal is to | 719 // Check whether the codec supports a hardware-secure mode. The goal is to |
| 720 // prevent mixing of non-hardware-secure codecs with hardware-secure codecs, | 720 // prevent mixing of non-hardware-secure codecs with hardware-secure codecs, |
| 721 // since the mode is fixed at CDM creation. | 721 // since the mode is fixed at CDM creation. |
| 722 // | 722 // |
| 723 // Because the check for regular codec support is early-exit, we don't have | 723 // Because the check for regular codec support is early-exit, we don't have |
| 724 // to consider codecs that are only supported in hardware-secure mode. We | 724 // to consider codecs that are only supported in hardware-secure mode. We |
| 725 // could do so, and make use of SECURE_CODECS_REQUIRED, if it turns out that | 725 // could do so, and make use of HW_SECURE_CODECS_REQUIRED, if it turns out |
| 726 // hardware-secure-only codecs actually exist and are useful. | 726 // that hardware-secure-only codecs actually exist and are useful. |
| 727 if ((codec & key_system_secure_codec_mask) == 0) | 727 if ((codec & key_system_secure_codec_mask) == 0) |
| 728 support = EmeConfigRule::SECURE_CODECS_NOT_ALLOWED; | 728 support = EmeConfigRule::HW_SECURE_CODECS_NOT_ALLOWED; |
| 729 #endif // defined(OS_ANDROID) | 729 #endif // defined(OS_ANDROID) |
| 730 } | 730 } |
| 731 | 731 |
| 732 return support; | 732 return support; |
| 733 } | 733 } |
| 734 | 734 |
| 735 EmeConfigRule KeySystemsImpl::GetRobustnessConfigRule( | 735 EmeConfigRule KeySystemsImpl::GetRobustnessConfigRule( |
| 736 const std::string& key_system, | 736 const std::string& key_system, |
| 737 EmeMediaType media_type, | 737 EmeMediaType media_type, |
| 738 const std::string& requested_robustness) const { | 738 const std::string& requested_robustness) const { |
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| 781 // For video, recommend remote attestation if HW_SECURE_ALL is available, | 781 // For video, recommend remote attestation if HW_SECURE_ALL is available, |
| 782 // because it enables hardware accelerated decoding. | 782 // because it enables hardware accelerated decoding. |
| 783 // TODO(sandersd): Only do this when hardware accelerated decoding is | 783 // TODO(sandersd): Only do this when hardware accelerated decoding is |
| 784 // available for the requested codecs. | 784 // available for the requested codecs. |
| 785 if (media_type == EmeMediaType::VIDEO && | 785 if (media_type == EmeMediaType::VIDEO && |
| 786 max_robustness == EmeRobustness::HW_SECURE_ALL) { | 786 max_robustness == EmeRobustness::HW_SECURE_ALL) { |
| 787 return EmeConfigRule::IDENTIFIER_RECOMMENDED; | 787 return EmeConfigRule::IDENTIFIER_RECOMMENDED; |
| 788 } | 788 } |
| 789 #elif defined(OS_ANDROID) | 789 #elif defined(OS_ANDROID) |
| 790 if (robustness > EmeRobustness::SW_SECURE_CRYPTO) | 790 if (robustness > EmeRobustness::SW_SECURE_CRYPTO) |
| 791 return EmeConfigRule::SECURE_CODECS_REQUIRED; | 791 return EmeConfigRule::HW_SECURE_CODECS_REQUIRED; |
| 792 #endif // defined(OS_CHROMEOS) | 792 #endif // defined(OS_CHROMEOS) |
| 793 } | 793 } |
| 794 | 794 |
| 795 return EmeConfigRule::SUPPORTED; | 795 return EmeConfigRule::SUPPORTED; |
| 796 } | 796 } |
| 797 | 797 |
| 798 EmeSessionTypeSupport KeySystemsImpl::GetPersistentLicenseSessionSupport( | 798 EmeSessionTypeSupport KeySystemsImpl::GetPersistentLicenseSessionSupport( |
| 799 const std::string& key_system) const { | 799 const std::string& key_system) const { |
| 800 DCHECK(thread_checker_.CalledOnValidThread()); | 800 DCHECK(thread_checker_.CalledOnValidThread()); |
| 801 | 801 |
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| 933 } | 933 } |
| 934 | 934 |
| 935 MEDIA_EXPORT void AddCodecMask( | 935 MEDIA_EXPORT void AddCodecMask( |
| 936 EmeMediaType media_type, | 936 EmeMediaType media_type, |
| 937 const std::string& codec, | 937 const std::string& codec, |
| 938 uint32 mask) { | 938 uint32 mask) { |
| 939 KeySystemsImpl::GetInstance()->AddCodecMask(media_type, codec, mask); | 939 KeySystemsImpl::GetInstance()->AddCodecMask(media_type, codec, mask); |
| 940 } | 940 } |
| 941 | 941 |
| 942 } // namespace media | 942 } // namespace media |
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