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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/encryptedmedia/encrypted_media_utils.h"
#include "base/notreached.h"
#include "media/base/eme_constants.h"
#include "media/base/key_systems.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/metrics/public/cpp/ukm_recorder.h"
#include "third_party/blink/public/web/web_local_frame_client.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
namespace blink {
namespace {
const char kTemporary[] = "temporary";
const char kPersistentLicense[] = "persistent-license";
} // namespace
// static
media::EmeInitDataType EncryptedMediaUtils::ConvertToInitDataType(
const String& init_data_type) {
if (init_data_type == "cenc")
return media::EmeInitDataType::CENC;
if (init_data_type == "keyids")
return media::EmeInitDataType::KEYIDS;
if (init_data_type == "webm")
return media::EmeInitDataType::WEBM;
// |initDataType| is not restricted in the idl, so anything is possible.
return media::EmeInitDataType::UNKNOWN;
}
// static
String EncryptedMediaUtils::ConvertFromInitDataType(
media::EmeInitDataType init_data_type) {
switch (init_data_type) {
case media::EmeInitDataType::CENC:
return "cenc";
case media::EmeInitDataType::KEYIDS:
return "keyids";
case media::EmeInitDataType::WEBM:
return "webm";
case media::EmeInitDataType::UNKNOWN:
// Chromium should not use Unknown, but we use it in Blink when the
// actual value has been blocked for non-same-origin or mixed content.
return String();
}
NOTREACHED();
}
// static
WebEncryptedMediaSessionType EncryptedMediaUtils::ConvertToSessionType(
const String& session_type) {
if (session_type == kTemporary)
return WebEncryptedMediaSessionType::kTemporary;
if (session_type == kPersistentLicense)
return WebEncryptedMediaSessionType::kPersistentLicense;
// |sessionType| is not restricted in the idl, so anything is possible.
return WebEncryptedMediaSessionType::kUnknown;
}
// static
String EncryptedMediaUtils::ConvertFromSessionType(
WebEncryptedMediaSessionType session_type) {
switch (session_type) {
case WebEncryptedMediaSessionType::kTemporary:
return kTemporary;
case WebEncryptedMediaSessionType::kPersistentLicense:
return kPersistentLicense;
case WebEncryptedMediaSessionType::kUnknown:
// Unexpected session type from Chromium.
NOTREACHED();
}
NOTREACHED();
}
// static
V8MediaKeyStatus EncryptedMediaUtils::ConvertKeyStatusToEnum(
const WebEncryptedMediaKeyInformation::KeyStatus status) {
switch (status) {
case WebEncryptedMediaKeyInformation::KeyStatus::kUsable:
return V8MediaKeyStatus(V8MediaKeyStatus::Enum::kUsable);
case WebEncryptedMediaKeyInformation::KeyStatus::kExpired:
return V8MediaKeyStatus(V8MediaKeyStatus::Enum::kExpired);
case WebEncryptedMediaKeyInformation::KeyStatus::kReleased:
return V8MediaKeyStatus(V8MediaKeyStatus::Enum::kReleased);
case WebEncryptedMediaKeyInformation::KeyStatus::kOutputRestricted:
return V8MediaKeyStatus(V8MediaKeyStatus::Enum::kOutputRestricted);
case WebEncryptedMediaKeyInformation::KeyStatus::kOutputDownscaled:
return V8MediaKeyStatus(V8MediaKeyStatus::Enum::kOutputDownscaled);
case WebEncryptedMediaKeyInformation::KeyStatus::kStatusPending:
return V8MediaKeyStatus(V8MediaKeyStatus::Enum::kStatusPending);
case WebEncryptedMediaKeyInformation::KeyStatus::kInternalError:
return V8MediaKeyStatus(V8MediaKeyStatus::Enum::kInternalError);
case WebEncryptedMediaKeyInformation::KeyStatus::kUsableInFuture:
return V8MediaKeyStatus(V8MediaKeyStatus::Enum::kUsableInFuture);
}
NOTREACHED();
}
// static
WebMediaKeySystemConfiguration::Requirement
EncryptedMediaUtils::ConvertToMediaKeysRequirement(
V8MediaKeysRequirement::Enum requirement) {
switch (requirement) {
case V8MediaKeysRequirement::Enum::kRequired:
return WebMediaKeySystemConfiguration::Requirement::kRequired;
case V8MediaKeysRequirement::Enum::kOptional:
return WebMediaKeySystemConfiguration::Requirement::kOptional;
case V8MediaKeysRequirement::Enum::kNotAllowed:
return WebMediaKeySystemConfiguration::Requirement::kNotAllowed;
}
NOTREACHED();
}
// static
V8MediaKeysRequirement::Enum
EncryptedMediaUtils::ConvertMediaKeysRequirementToEnum(
WebMediaKeySystemConfiguration::Requirement requirement) {
switch (requirement) {
case WebMediaKeySystemConfiguration::Requirement::kRequired:
return V8MediaKeysRequirement::Enum::kRequired;
case WebMediaKeySystemConfiguration::Requirement::kOptional:
return V8MediaKeysRequirement::Enum::kOptional;
case WebMediaKeySystemConfiguration::Requirement::kNotAllowed:
return V8MediaKeysRequirement::Enum::kNotAllowed;
}
NOTREACHED();
}
// static
WebEncryptedMediaClient*
EncryptedMediaUtils::GetEncryptedMediaClientFromLocalDOMWindow(
LocalDOMWindow* window) {
WebLocalFrameImpl* web_frame =
WebLocalFrameImpl::FromFrame(window->GetFrame());
return web_frame->Client()->EncryptedMediaClient();
}
// static
void EncryptedMediaUtils::ReportUsage(EmeApiType api_type,
ExecutionContext* execution_context,
const String& key_system,
bool use_hardware_secure_codecs,
bool is_persistent_session) {
if (!execution_context) {
return;
}
ukm::builders::Media_EME_Usage builder(execution_context->UkmSourceID());
builder.SetKeySystem(media::GetKeySystemIntForUKM(key_system.Ascii()));
builder.SetUseHardwareSecureCodecs(use_hardware_secure_codecs);
builder.SetApi(static_cast<int>(api_type));
builder.SetIsPersistentSession(is_persistent_session);
builder.Record(execution_context->UkmRecorder());
}
} // namespace blink
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