media: Support creation and SetCdm() for mojo based CDM.

media/mojo/services/mojo_cdm.cc

 // 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 "media/mojo/services/mojo_cdm.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "media/base/cdm_key_information.h"
 #include "media/base/cdm_promise.h"
 #include "media/mojo/services/media_type_converters.h"
 #include "mojo/application/public/cpp/connect.h"
 #include "mojo/application/public/interfaces/service_provider.mojom.h"
 #include "third_party/mojo/src/mojo/public/cpp/bindings/interface_impl.h"
 #include "url/gurl.h"
 
 namespace media {
 
 template <typename PromiseType>
 static void RejectPromise(scoped_ptr<PromiseType> promise,
                           mojo::CdmPromiseResultPtr result) {
   promise->reject(static_cast<MediaKeys::Exception>(result->exception),
                   result->system_code, result->error_message);
 }
 
 MojoCdm::MojoCdm(mojo::ContentDecryptionModulePtr remote_cdm,
+                 int32_t cdm_id,
                  const SessionMessageCB& session_message_cb,
                  const SessionClosedCB& session_closed_cb,
                  const LegacySessionErrorCB& legacy_session_error_cb,
                  const SessionKeysChangeCB& session_keys_change_cb,
                  const SessionExpirationUpdateCB& session_expiration_update_cb)
     : remote_cdm_(remote_cdm.Pass()),
       binding_(this),
+      cdm_id_(cdm_id),
       session_message_cb_(session_message_cb),
       session_closed_cb_(session_closed_cb),
       legacy_session_error_cb_(legacy_session_error_cb),
       session_keys_change_cb_(session_keys_change_cb),
       session_expiration_update_cb_(session_expiration_update_cb),
       weak_factory_(this) {
   DVLOG(1) << __FUNCTION__;
   DCHECK(!session_message_cb_.is_null());
   DCHECK(!session_closed_cb_.is_null());
   DCHECK(!legacy_session_error_cb_.is_null());
   DCHECK(!session_keys_change_cb_.is_null());
   DCHECK(!session_expiration_update_cb_.is_null());
 
   mojo::ContentDecryptionModuleClientPtr client_ptr;
   binding_.Bind(GetProxy(&client_ptr));
   remote_cdm_->SetClient(client_ptr.Pass());
 }
 
 MojoCdm::~MojoCdm() {
   DVLOG(1) << __FUNCTION__;
 }
 
 void MojoCdm::SetServerCertificate(const std::vector<uint8_t>& certificate,
                                    scoped_ptr<SimpleCdmPromise> promise) {
+  DVLOG(2) << __FUNCTION__;
   remote_cdm_->SetServerCertificate(
       mojo::Array<uint8_t>::From(certificate),
       base::Bind(&MojoCdm::OnPromiseResult<>, weak_factory_.GetWeakPtr(),
                  base::Passed(&promise)));
 }
 
 void MojoCdm::CreateSessionAndGenerateRequest(
     SessionType session_type,
     EmeInitDataType init_data_type,
     const std::vector<uint8_t>& init_data,
     scoped_ptr<NewSessionCdmPromise> promise) {
+  DVLOG(2) << __FUNCTION__;
   remote_cdm_->CreateSessionAndGenerateRequest(
       static_cast<mojo::ContentDecryptionModule::SessionType>(session_type),
       static_cast<mojo::ContentDecryptionModule::InitDataType>(init_data_type),
       mojo::Array<uint8_t>::From(init_data),
       base::Bind(&MojoCdm::OnPromiseResult<std::string>,
                  weak_factory_.GetWeakPtr(), base::Passed(&promise)));
 }
 
 void MojoCdm::LoadSession(SessionType session_type,
                           const std::string& session_id,
                           scoped_ptr<NewSessionCdmPromise> promise) {
+  DVLOG(2) << __FUNCTION__;
   remote_cdm_->LoadSession(
       static_cast<mojo::ContentDecryptionModule::SessionType>(session_type),
       session_id,
       base::Bind(&MojoCdm::OnPromiseResult<std::string>,
                  weak_factory_.GetWeakPtr(), base::Passed(&promise)));
 }
 
 void MojoCdm::UpdateSession(const std::string& session_id,
                             const std::vector<uint8_t>& response,
                             scoped_ptr<SimpleCdmPromise> promise) {
+  DVLOG(2) << __FUNCTION__;
   remote_cdm_->UpdateSession(
       session_id, mojo::Array<uint8_t>::From(response),
       base::Bind(&MojoCdm::OnPromiseResult<>, weak_factory_.GetWeakPtr(),
                  base::Passed(&promise)));
 }
 
 void MojoCdm::CloseSession(const std::string& session_id,
                            scoped_ptr<SimpleCdmPromise> promise) {
+  DVLOG(2) << __FUNCTION__;
   remote_cdm_->CloseSession(session_id, base::Bind(&MojoCdm::OnPromiseResult<>,
                                                    weak_factory_.GetWeakPtr(),
                                                    base::Passed(&promise)));
 }
 
 void MojoCdm::RemoveSession(const std::string& session_id,
                             scoped_ptr<SimpleCdmPromise> promise) {
+  DVLOG(2) << __FUNCTION__;
   remote_cdm_->RemoveSession(session_id, base::Bind(&MojoCdm::OnPromiseResult<>,
                                                     weak_factory_.GetWeakPtr(),
                                                     base::Passed(&promise)));
 }
 
 CdmContext* MojoCdm::GetCdmContext() {
+  DVLOG(2) << __FUNCTION__;
+  return this;
+}
+
+media::Decryptor* MojoCdm::GetDecryptor() {
   NOTIMPLEMENTED();
   return nullptr;
 }
 
+int MojoCdm::GetCdmId() const {
+  DVLOG(2) << __FUNCTION__ << cdm_id_;
+  return cdm_id_;
+}
+
 void MojoCdm::OnSessionMessage(const mojo::String& session_id,
                                mojo::CdmMessageType message_type,
                                mojo::Array<uint8_t> message,
                                const mojo::String& legacy_destination_url) {
+  DVLOG(2) << __FUNCTION__;
   GURL verified_gurl = GURL(legacy_destination_url);
   if (!verified_gurl.is_valid() && !verified_gurl.is_empty()) {
     DLOG(WARNING) << "SessionMessage destination_url is invalid : "
                   << verified_gurl.possibly_invalid_spec();
     verified_gurl = GURL::EmptyGURL();  // Replace invalid destination_url.
   }
 
   session_message_cb_.Run(session_id,
                           static_cast<MediaKeys::MessageType>(message_type),
                           message.storage(), verified_gurl);
 }
 
 void MojoCdm::OnSessionClosed(const mojo::String& session_id) {
+  DVLOG(2) << __FUNCTION__;
   session_closed_cb_.Run(session_id);
 }
 
 void MojoCdm::OnLegacySessionError(const mojo::String& session_id,
                                    mojo::CdmException exception,
                                    uint32_t system_code,
                                    const mojo::String& error_message) {
+  DVLOG(2) << __FUNCTION__;
   legacy_session_error_cb_.Run(session_id,
                                static_cast<MediaKeys::Exception>(exception),
                                system_code, error_message);
 }
 
 void MojoCdm::OnSessionKeysChange(
     const mojo::String& session_id,
     bool has_additional_usable_key,
     mojo::Array<mojo::CdmKeyInformationPtr> keys_info) {
+  DVLOG(2) << __FUNCTION__;
   media::CdmKeysInfo key_data;
   key_data.reserve(keys_info.size());
   for (size_t i = 0; i < keys_info.size(); ++i) {
     key_data.push_back(
         keys_info[i].To<scoped_ptr<media::CdmKeyInformation>>().release());
   }
   session_keys_change_cb_.Run(session_id, has_additional_usable_key,
                               key_data.Pass());
 }
 
 void MojoCdm::OnSessionExpirationUpdate(const mojo::String& session_id,
                                         double new_expiry_time_sec) {
+  DVLOG(2) << __FUNCTION__;
   session_expiration_update_cb_.Run(
       session_id, base::Time::FromDoubleT(new_expiry_time_sec));
 }
 
 }  // namespace media