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// Copyright 2014 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.
#include "content/renderer/media/cdm_session_adapter.h"
#include "base/bind.h"
#include "base/logging.h"
#include "base/memory/weak_ptr.h"
#include "base/stl_util.h"
#include "content/renderer/media/crypto/content_decryption_module_factory.h"
#include "content/renderer/media/webcontentdecryptionmodulesession_impl.h"
#include "media/base/cdm_promise.h"
#include "media/base/media_keys.h"
#include "url/gurl.h"
namespace content {
CdmSessionAdapter::CdmSessionAdapter() :
#if defined(OS_ANDROID)
cdm_id_(0),
#endif
weak_ptr_factory_(this) {}
CdmSessionAdapter::~CdmSessionAdapter() {}
bool CdmSessionAdapter::Initialize(
#if defined(ENABLE_PEPPER_CDMS)
const CreatePepperCdmCB& create_pepper_cdm_cb,
#elif defined(OS_ANDROID)
RendererCdmManager* manager,
#endif // defined(ENABLE_PEPPER_CDMS)
const std::string& key_system,
const GURL& security_origin) {
base::WeakPtr<CdmSessionAdapter> weak_this = weak_ptr_factory_.GetWeakPtr();
media_keys_ = ContentDecryptionModuleFactory::Create(
key_system,
security_origin,
#if defined(ENABLE_PEPPER_CDMS)
create_pepper_cdm_cb,
#elif defined(OS_ANDROID)
manager,
&cdm_id_,
#endif // defined(ENABLE_PEPPER_CDMS)
base::Bind(&CdmSessionAdapter::OnSessionMessage, weak_this),
base::Bind(&CdmSessionAdapter::OnSessionReady, weak_this),
base::Bind(&CdmSessionAdapter::OnSessionClosed, weak_this),
base::Bind(&CdmSessionAdapter::OnSessionError, weak_this));
// Success if |media_keys_| created.
return media_keys_;
}
WebContentDecryptionModuleSessionImpl* CdmSessionAdapter::CreateSession(
blink::WebContentDecryptionModuleSession::Client* client) {
return new WebContentDecryptionModuleSessionImpl(client, this);
}
void CdmSessionAdapter::RegisterSession(
const std::string& web_session_id,
base::WeakPtr<WebContentDecryptionModuleSessionImpl> session) {
DCHECK(!ContainsKey(sessions_, web_session_id));
sessions_[web_session_id] = session;
}
void CdmSessionAdapter::RemoveSession(const std::string& web_session_id) {
DCHECK(ContainsKey(sessions_, web_session_id));
sessions_.erase(web_session_id);
}
void CdmSessionAdapter::InitializeNewSession(
const std::string& init_data_type,
const uint8* init_data,
int init_data_length,
media::MediaKeys::SessionType session_type,
scoped_ptr<media::NewSessionCdmPromise> promise) {
media_keys_->CreateSession(init_data_type,
init_data,
init_data_length,
session_type,
promise.Pass());
}
void CdmSessionAdapter::UpdateSession(
const std::string& web_session_id,
const uint8* response,
int response_length,
scoped_ptr<media::SimpleCdmPromise> promise) {
media_keys_->UpdateSession(
web_session_id, response, response_length, promise.Pass());
}
void CdmSessionAdapter::ReleaseSession(
const std::string& web_session_id,
scoped_ptr<media::SimpleCdmPromise> promise) {
media_keys_->ReleaseSession(web_session_id, promise.Pass());
}
media::Decryptor* CdmSessionAdapter::GetDecryptor() {
return media_keys_->GetDecryptor();
}
#if defined(OS_ANDROID)
int CdmSessionAdapter::GetCdmId() const {
return cdm_id_;
}
#endif // defined(OS_ANDROID)
void CdmSessionAdapter::OnSessionMessage(const std::string& web_session_id,
const std::vector<uint8>& message,
const GURL& destination_url) {
WebContentDecryptionModuleSessionImpl* session = GetSession(web_session_id);
DLOG_IF(WARNING, !session) << __FUNCTION__ << " for unknown session "
<< web_session_id;
if (session)
session->OnSessionMessage(message, destination_url);
}
void CdmSessionAdapter::OnSessionReady(const std::string& web_session_id) {
WebContentDecryptionModuleSessionImpl* session = GetSession(web_session_id);
DLOG_IF(WARNING, !session) << __FUNCTION__ << " for unknown session "
<< web_session_id;
if (session)
session->OnSessionReady();
}
void CdmSessionAdapter::OnSessionClosed(const std::string& web_session_id) {
WebContentDecryptionModuleSessionImpl* session = GetSession(web_session_id);
DLOG_IF(WARNING, !session) << __FUNCTION__ << " for unknown session "
<< web_session_id;
if (session)
session->OnSessionClosed();
}
void CdmSessionAdapter::OnSessionError(
const std::string& web_session_id,
media::MediaKeys::Exception exception_code,
uint32 system_code,
const std::string& error_message) {
WebContentDecryptionModuleSessionImpl* session = GetSession(web_session_id);
DLOG_IF(WARNING, !session) << __FUNCTION__ << " for unknown session "
<< web_session_id;
if (session)
session->OnSessionError(exception_code, system_code, error_message);
}
WebContentDecryptionModuleSessionImpl* CdmSessionAdapter::GetSession(
const std::string& web_session_id) {
// Since session objects may get garbage collected, it is possible that there
// are events coming back from the CDM and the session has been unregistered.
// We can not tell if the CDM is firing events at sessions that never existed.
SessionMap::iterator session = sessions_.find(web_session_id);
return (session != sessions_.end()) ? session->second.get() : NULL;
}
} // namespace content
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