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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_CDM_RENDERER_WIDEVINE_KEY_SYSTEM_INFO_H_
#define COMPONENTS_CDM_RENDERER_WIDEVINE_KEY_SYSTEM_INFO_H_
#include <string>
#include "base/containers/flat_set.h"
#include "media/base/content_decryption_module.h"
#include "media/base/key_system_info.h"
namespace cdm {
// Implementation of KeySystemInfo for Widevine key system.
class WidevineKeySystemInfo : public media::KeySystemInfo {
public:
// Robustness values understood by the Widevine key system.
// Note: GetRobustnessConfigRule is dependent on the order of these.
enum class Robustness {
INVALID,
EMPTY,
SW_SECURE_CRYPTO,
SW_SECURE_DECODE,
HW_SECURE_CRYPTO,
HW_SECURE_DECODE,
HW_SECURE_ALL,
};
WidevineKeySystemInfo(
media::SupportedCodecs codecs,
base::flat_set<media::EncryptionScheme> encryption_schemes,
base::flat_set<media::CdmSessionType> session_types,
media::SupportedCodecs hw_secure_codecs,
base::flat_set<media::EncryptionScheme> hw_secure_encryption_schemes,
base::flat_set<media::CdmSessionType> hw_secure_session_types,
Robustness max_audio_robustness,
Robustness max_video_robustness,
media::EmeFeatureSupport persistent_state_support,
media::EmeFeatureSupport distinctive_identifier_support);
~WidevineKeySystemInfo() override;
std::string GetBaseKeySystemName() const override;
bool IsSupportedKeySystem(const std::string& key_system) const override;
bool ShouldUseBaseKeySystemName() const override;
bool IsSupportedInitDataType(
media::EmeInitDataType init_data_type) const override;
media::EmeConfig::Rule GetEncryptionSchemeConfigRule(
media::EncryptionScheme encryption_scheme) const override;
media::SupportedCodecs GetSupportedCodecs() const override;
media::SupportedCodecs GetSupportedHwSecureCodecs() const override;
media::EmeConfig::Rule GetRobustnessConfigRule(
const std::string& key_system,
media::EmeMediaType media_type,
const std::string& requested_robustness,
const bool* hw_secure_requirement) const override;
media::EmeConfig::Rule GetPersistentLicenseSessionSupport() const override;
media::EmeFeatureSupport GetPersistentStateSupport() const override;
media::EmeFeatureSupport GetDistinctiveIdentifierSupport() const override;
#if BUILDFLAG(IS_WIN)
// `is_experimental_` is used to differentiate between
// `kWidevineExperimentKeySystem` and `kWidevineKeySystem`. Please refer to
// b/219818166 for more information.
void set_experimental() { is_experimental_ = true; }
#endif // BUILDFLAG(IS_WIN)
private:
const media::SupportedCodecs codecs_;
const base::flat_set<media::EncryptionScheme> encryption_schemes_;
const base::flat_set<media::CdmSessionType> session_types_;
const media::SupportedCodecs hw_secure_codecs_;
const base::flat_set<media::EncryptionScheme> hw_secure_encryption_schemes_;
const base::flat_set<media::CdmSessionType> hw_secure_session_types_;
const Robustness max_audio_robustness_;
const Robustness max_video_robustness_;
const media::EmeFeatureSupport persistent_state_support_;
const media::EmeFeatureSupport distinctive_identifier_support_;
#if BUILDFLAG(IS_WIN)
bool is_experimental_ = false;
#endif // BUILDFLAG(IS_WIN)
};
} // namespace cdm
#endif // COMPONENTS_CDM_RENDERER_WIDEVINE_KEY_SYSTEM_INFO_H_
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