media/mojo/services/mojo_cdm.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "media/mojo/services/mojo_cdm.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "media/base/cdm_key_information.h"
  10 #include "media/base/cdm_promise.h"
  11 #include "media/mojo/services/media_type_converters.h"
  12 #include "third_party/mojo/src/mojo/public/cpp/application/connect.h"
  13 #include "third_party/mojo/src/mojo/public/cpp/bindings/interface_impl.h"
  14 #include "third_party/mojo/src/mojo/public/interfaces/application/service_provider.mojom.h"
  15 #include "url/gurl.h"
  16
  17 namespace media {
  18
  19 static mojo::Array<uint8_t> CreateMojoArray(const uint8_t* data, int length) {
  20   DCHECK(data);
  21   DCHECK_GT(length, 0);
  22   std::vector<uint8_t> vector(data, data + length);
  23   mojo::Array<uint8_t> array;
  24   array.Swap(&vector);
  25   return array.Pass();
  26 }
  27
  28 template <typename PromiseType>
  29 static void RejectPromise(scoped_ptr<PromiseType> promise,
  30                           mojo::CdmPromiseResultPtr result) {
  31   promise->reject(static_cast<MediaKeys::Exception>(result->exception),
  32                   result->system_code, result->error_message);
  33 }
  34
  35 MojoCdm::MojoCdm(mojo::ContentDecryptionModulePtr remote_cdm,
  36                  const SessionMessageCB& session_message_cb,
  37                  const SessionClosedCB& session_closed_cb,
  38                  const SessionErrorCB& session_error_cb,
  39                  const SessionKeysChangeCB& session_keys_change_cb,
  40                  const SessionExpirationUpdateCB& session_expiration_update_cb)
  41     : remote_cdm_(remote_cdm.Pass()),
  42       session_message_cb_(session_message_cb),
  43       session_closed_cb_(session_closed_cb),
  44       session_error_cb_(session_error_cb),
  45       session_keys_change_cb_(session_keys_change_cb),
  46       session_expiration_update_cb_(session_expiration_update_cb),
  47       weak_factory_(this) {
  48   DVLOG(1) << __FUNCTION__;
  49   DCHECK(!session_message_cb_.is_null());
  50   DCHECK(!session_closed_cb_.is_null());
  51   DCHECK(!session_error_cb_.is_null());
  52   DCHECK(!session_keys_change_cb_.is_null());
  53   DCHECK(!session_expiration_update_cb_.is_null());
  54
  55   // TODO(xhwang): Client syntax has been removed, so a new mechanism for client
  56   // discovery must be added to this interface.  See http://crbug.com/451321.
  57   NOTREACHED();
  58 }
  59
  60 MojoCdm::~MojoCdm() {
  61   DVLOG(1) << __FUNCTION__;
  62 }
  63
  64 void MojoCdm::SetServerCertificate(const uint8_t* certificate_data,
  65                                    int certificate_data_length,
  66                                    scoped_ptr<SimpleCdmPromise> promise) {
  67   remote_cdm_->SetServerCertificate(
  68       CreateMojoArray(certificate_data, certificate_data_length),
  69       base::Bind(&MojoCdm::OnPromiseResult<>, weak_factory_.GetWeakPtr(),
  70                  base::Passed(&promise)));
  71 }
  72
  73 void MojoCdm::CreateSessionAndGenerateRequest(
  74     SessionType session_type,
  75     const std::string& init_data_type,
  76     const uint8_t* init_data,
  77     int init_data_length,
  78     scoped_ptr<NewSessionCdmPromise> promise) {
  79   remote_cdm_->CreateSessionAndGenerateRequest(
  80       static_cast<mojo::ContentDecryptionModule::SessionType>(session_type),
  81       init_data_type, CreateMojoArray(init_data, init_data_length),
  82       base::Bind(&MojoCdm::OnPromiseResult<std::string>,
  83                  weak_factory_.GetWeakPtr(), base::Passed(&promise)));
  84 }
  85
  86 void MojoCdm::LoadSession(SessionType session_type,
  87                           const std::string& session_id,
  88                           scoped_ptr<NewSessionCdmPromise> promise) {
  89   remote_cdm_->LoadSession(
  90       static_cast<mojo::ContentDecryptionModule::SessionType>(session_type),
  91       session_id,
  92       base::Bind(&MojoCdm::OnPromiseResult<std::string>,
  93                  weak_factory_.GetWeakPtr(), base::Passed(&promise)));
  94 }
  95
  96 void MojoCdm::UpdateSession(const std::string& session_id,
  97                             const uint8_t* response,
  98                             int response_length,
  99                             scoped_ptr<SimpleCdmPromise> promise) {
 100   remote_cdm_->UpdateSession(
 101       session_id, CreateMojoArray(response, response_length),
 102       base::Bind(&MojoCdm::OnPromiseResult<>, weak_factory_.GetWeakPtr(),
 103                  base::Passed(&promise)));
 104 }
 105
 106 void MojoCdm::CloseSession(const std::string& session_id,
 107                            scoped_ptr<SimpleCdmPromise> promise) {
 108   remote_cdm_->CloseSession(session_id, base::Bind(&MojoCdm::OnPromiseResult<>,
 109                                                    weak_factory_.GetWeakPtr(),
 110                                                    base::Passed(&promise)));
 111 }
 112
 113 void MojoCdm::RemoveSession(const std::string& session_id,
 114                             scoped_ptr<SimpleCdmPromise> promise) {
 115   remote_cdm_->RemoveSession(session_id, base::Bind(&MojoCdm::OnPromiseResult<>,
 116                                                     weak_factory_.GetWeakPtr(),
 117                                                     base::Passed(&promise)));
 118 }
 119
 120 CdmContext* MojoCdm::GetCdmContext() {
 121   NOTIMPLEMENTED();
 122   return nullptr;
 123 }
 124
 125 void MojoCdm::OnSessionMessage(const mojo::String& session_id,
 126                                mojo::CdmMessageType message_type,
 127                                mojo::Array<uint8_t> message,
 128                                const mojo::String& legacy_destination_url) {
 129   GURL verified_gurl = GURL(legacy_destination_url);
 130   if (!verified_gurl.is_valid() && !verified_gurl.is_empty()) {
 131     DLOG(WARNING) << "SessionMessage destination_url is invalid : "
 132                   << verified_gurl.possibly_invalid_spec();
 133     verified_gurl = GURL::EmptyGURL();  // Replace invalid destination_url.
 134   }
 135
 136   session_message_cb_.Run(session_id,
 137                           static_cast<MediaKeys::MessageType>(message_type),
 138                           message.storage(), verified_gurl);
 139 }
 140
 141 void MojoCdm::OnSessionClosed(const mojo::String& session_id) {
 142   session_closed_cb_.Run(session_id);
 143 }
 144
 145 void MojoCdm::OnSessionError(const mojo::String& session_id,
 146                              mojo::CdmException exception,
 147                              uint32_t system_code,
 148                              const mojo::String& error_message) {
 149   session_error_cb_.Run(session_id,
 150                         static_cast<MediaKeys::Exception>(exception),
 151                         system_code, error_message);
 152 }
 153
 154 void MojoCdm::OnSessionKeysChange(
 155     const mojo::String& session_id,
 156     bool has_additional_usable_key,
 157     mojo::Array<mojo::CdmKeyInformationPtr> keys_info) {
 158   media::CdmKeysInfo key_data;
 159   key_data.reserve(keys_info.size());
 160   for (size_t i = 0; i < keys_info.size(); ++i) {
 161     key_data.push_back(
 162         keys_info[i].To<scoped_ptr<media::CdmKeyInformation>>().release());
 163   }
 164   session_keys_change_cb_.Run(session_id, has_additional_usable_key,
 165                               key_data.Pass());
 166 }
 167
 168 void MojoCdm::OnSessionExpirationUpdate(const mojo::String& session_id,
 169                                         int64_t new_expiry_time_usec) {
 170   session_expiration_update_cb_.Run(
 171       session_id, base::Time::FromInternalValue(new_expiry_time_usec));
 172 }
 173
 174 }  // namespace media