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// Copyright 2013 The Chromium 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 MEDIA_BASE_KEY_SYSTEM_PROPERTIES_H_
#define MEDIA_BASE_KEY_SYSTEM_PROPERTIES_H_
#include <string>
#include "build/build_config.h"
#include "media/base/decrypt_config.h"
#include "media/base/eme_constants.h"
#include "media/base/media_export.h"
namespace media {
// Provides an interface for querying the properties of a registered key system.
class MEDIA_EXPORT KeySystemProperties {
public:
virtual ~KeySystemProperties() {}
// Gets the name of this key system.
virtual std::string GetKeySystemName() const = 0;
// Returns whether |init_data_type| is supported by this key system.
virtual bool IsSupportedInitDataType(
EmeInitDataType init_data_type) const = 0;
// Returns the configuration rule for supporting |encryption_scheme|.
virtual EmeConfigRule GetEncryptionSchemeConfigRule(
EncryptionMode encryption_scheme) const = 0;
// Returns the codecs supported by this key system.
virtual SupportedCodecs GetSupportedCodecs() const = 0;
// Returns the codecs with hardware-secure support in this key system.
virtual SupportedCodecs GetSupportedHwSecureCodecs() const;
// Returns the configuration rule for supporting a robustness requirement.
virtual EmeConfigRule GetRobustnessConfigRule(
EmeMediaType media_type,
const std::string& requested_robustness) const = 0;
// Returns the support this key system provides for persistent-license
// sessions.
virtual EmeSessionTypeSupport GetPersistentLicenseSessionSupport() const = 0;
// Returns the support this key system provides for persistent-usage-record
// sessions.
virtual EmeSessionTypeSupport GetPersistentUsageRecordSessionSupport()
const = 0;
// Returns the support this key system provides for persistent state.
virtual EmeFeatureSupport GetPersistentStateSupport() const = 0;
// Returns the support this key system provides for distinctive identifiers.
virtual EmeFeatureSupport GetDistinctiveIdentifierSupport() const = 0;
// Returns whether AesDecryptor can be used for this key system.
virtual bool UseAesDecryptor() const;
};
} // namespace media
#endif // MEDIA_BASE_KEY_SYSTEM_PROPERTIES_H_
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