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 "mojo/public/cpp/application/connect.h"
  13 #include "mojo/public/cpp/bindings/interface_impl.h"
  14 #include "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   remote_cdm_.set_client(this);
  56 }
  57
  58 MojoCdm::~MojoCdm() {
  59   DVLOG(1) << __FUNCTION__;
  60 }
  61
  62 void MojoCdm::SetServerCertificate(const uint8_t* certificate_data,
  63                                    int certificate_data_length,
  64                                    scoped_ptr<SimpleCdmPromise> promise) {
  65   remote_cdm_->SetServerCertificate(
  66       CreateMojoArray(certificate_data, certificate_data_length),
  67       base::Bind(&MojoCdm::OnPromiseResult<>, weak_factory_.GetWeakPtr(),
  68                  base::Passed(&promise)));
  69 }
  70
  71 void MojoCdm::CreateSessionAndGenerateRequest(
  72     SessionType session_type,
  73     const std::string& init_data_type,
  74     const uint8_t* init_data,
  75     int init_data_length,
  76     scoped_ptr<NewSessionCdmPromise> promise) {
  77   remote_cdm_->CreateSessionAndGenerateRequest(
  78       static_cast<mojo::ContentDecryptionModule::SessionType>(session_type),
  79       init_data_type, CreateMojoArray(init_data, init_data_length),
  80       base::Bind(&MojoCdm::OnPromiseResult<std::string>,
  81                  weak_factory_.GetWeakPtr(), base::Passed(&promise)));
  82 }
  83
  84 void MojoCdm::LoadSession(SessionType session_type,
  85                           const std::string& session_id,
  86                           scoped_ptr<NewSessionCdmPromise> promise) {
  87   remote_cdm_->LoadSession(
  88       static_cast<mojo::ContentDecryptionModule::SessionType>(session_type),
  89       session_id,
  90       base::Bind(&MojoCdm::OnPromiseResult<std::string>,
  91                  weak_factory_.GetWeakPtr(), base::Passed(&promise)));
  92 }
  93
  94 void MojoCdm::UpdateSession(const std::string& session_id,
  95                             const uint8_t* response,
  96                             int response_length,
  97                             scoped_ptr<SimpleCdmPromise> promise) {
  98   remote_cdm_->UpdateSession(
  99       session_id, CreateMojoArray(response, response_length),
 100       base::Bind(&MojoCdm::OnPromiseResult<>, weak_factory_.GetWeakPtr(),
 101                  base::Passed(&promise)));
 102 }
 103
 104 void MojoCdm::CloseSession(const std::string& session_id,
 105                            scoped_ptr<SimpleCdmPromise> promise) {
 106   remote_cdm_->CloseSession(session_id, base::Bind(&MojoCdm::OnPromiseResult<>,
 107                                                    weak_factory_.GetWeakPtr(),
 108                                                    base::Passed(&promise)));
 109 }
 110
 111 void MojoCdm::RemoveSession(const std::string& session_id,
 112                             scoped_ptr<SimpleCdmPromise> promise) {
 113   remote_cdm_->RemoveSession(session_id, base::Bind(&MojoCdm::OnPromiseResult<>,
 114                                                     weak_factory_.GetWeakPtr(),
 115                                                     base::Passed(&promise)));
 116 }
 117
 118 CdmContext* MojoCdm::GetCdmContext() {
 119   NOTIMPLEMENTED();
 120   return nullptr;
 121 }
 122
 123 void MojoCdm::OnSessionMessage(const mojo::String& session_id,
 124                                mojo::CdmMessageType message_type,
 125                                mojo::Array<uint8_t> message,
 126                                const mojo::String& legacy_destination_url) {
 127   GURL verified_gurl = GURL(legacy_destination_url);
 128   if (!verified_gurl.is_valid() && !verified_gurl.is_empty()) {
 129     DLOG(WARNING) << "SessionMessage destination_url is invalid : "
 130                   << verified_gurl.possibly_invalid_spec();
 131     verified_gurl = GURL::EmptyGURL();  // Replace invalid destination_url.
 132   }
 133
 134   session_message_cb_.Run(session_id,
 135                           static_cast<MediaKeys::MessageType>(message_type),
 136                           message.storage(), verified_gurl);
 137 }
 138
 139 void MojoCdm::OnSessionClosed(const mojo::String& session_id) {
 140   session_closed_cb_.Run(session_id);
 141 }
 142
 143 void MojoCdm::OnSessionError(const mojo::String& session_id,
 144                              mojo::CdmException exception,
 145                              uint32_t system_code,
 146                              const mojo::String& error_message) {
 147   session_error_cb_.Run(session_id,
 148                         static_cast<MediaKeys::Exception>(exception),
 149                         system_code, error_message);
 150 }
 151
 152 void MojoCdm::OnSessionKeysChange(
 153     const mojo::String& session_id,
 154     bool has_additional_usable_key,
 155     mojo::Array<mojo::CdmKeyInformationPtr> keys_info) {
 156   media::CdmKeysInfo key_data;
 157   key_data.reserve(keys_info.size());
 158   for (size_t i = 0; i < keys_info.size(); ++i) {
 159     key_data.push_back(
 160         keys_info[i].To<scoped_ptr<media::CdmKeyInformation>>().release());
 161   }
 162   session_keys_change_cb_.Run(session_id, has_additional_usable_key,
 163                               key_data.Pass());
 164 }
 165
 166 void MojoCdm::OnSessionExpirationUpdate(const mojo::String& session_id,
 167                                         int64_t new_expiry_time_usec) {
 168   session_expiration_update_cb_.Run(
 169       session_id, base::Time::FromInternalValue(new_expiry_time_usec));
 170 }
 171
 172 }  // namespace media