chromium/src/third_party/blink/renderer/modules/encryptedmedia/encrypted_media_utils.h

// Copyright 2015 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 THIRD_PARTY_BLINK_RENDERER_MODULES_ENCRYPTEDMEDIA_ENCRYPTED_MEDIA_UTILS_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_ENCRYPTEDMEDIA_ENCRYPTED_MEDIA_UTILS_H_

#include "third_party/blink/public/platform/web_encrypted_media_key_information.h"
#include "third_party/blink/public/platform/web_encrypted_media_types.h"
#include "third_party/blink/public/platform/web_media_key_system_configuration.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"

namespace media {
enum class EmeInitDataType;
}

namespace blink {

// Reported to UKM. Existing values must not change and new values must be
// added at the end of the list.
enum KeySystemForUkm {
  kClearKey = 0,
  kWidevine = 1,
};

// Enum for EME MediaKeySystemAccess, MediaKeys and MediaKeySession APIs.
// Reported to UKM. Existing values should NEVER be changed.
enum class EmeApiType {
  // Value 0 is reserved to detect errors.
  kCreateMediaKeys = 1,
  kSetServerCertificate = 2,
  kGetStatusForPolicy = 3,
  kGenerateRequest = 4,
  kLoad = 5,
  kUpdate = 6,
  kClose = 7,
  kRemove = 8,
};

constexpr const char* kEncryptedMediaFeaturePolicyConsoleWarning =
    "Encrypted Media access has been blocked because of a Feature Policy "
    "applied to the current document. See https://goo.gl/EuHzyv for more "
    "details.";

class EncryptedMediaUtils {
  STATIC_ONLY(EncryptedMediaUtils);

 public:
  static media::EmeInitDataType ConvertToInitDataType(
      const String& init_data_type);
  static String ConvertFromInitDataType(media::EmeInitDataType init_data_type);

  static WebEncryptedMediaSessionType ConvertToSessionType(
      const String& session_type);
  static String ConvertFromSessionType(WebEncryptedMediaSessionType);

  static String ConvertKeyStatusToString(
      const WebEncryptedMediaKeyInformation::KeyStatus);

  static WebMediaKeySystemConfiguration::Requirement
  ConvertToMediaKeysRequirement(const String&);
  static String ConvertMediaKeysRequirementToString(
      WebMediaKeySystemConfiguration::Requirement);

  // Get interface and property name for |type|, e.t. "MediaKeys" and "load",
  // respectively.
  static const char* GetInterfaceName(EmeApiType type);
  static const char* GetPropertyName(EmeApiType type);
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_ENCRYPTEDMEDIA_ENCRYPTED_MEDIA_UTILS_H_