src/ppapi/cpp/private/content_decryptor_private.cc

   1 // Copyright (c) 2012 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 "ppapi/cpp/private/content_decryptor_private.h"
   6
   7 #include <cstring>  // memcpy
   8
   9 #include "ppapi/c/ppb_var.h"
  10 #include "ppapi/c/private/ppb_content_decryptor_private.h"
  11 #include "ppapi/c/private/ppp_content_decryptor_private.h"
  12 #include "ppapi/cpp/instance.h"
  13 #include "ppapi/cpp/instance_handle.h"
  14 #include "ppapi/cpp/logging.h"
  15 #include "ppapi/cpp/module.h"
  16 #include "ppapi/cpp/module_impl.h"
  17 #include "ppapi/cpp/var.h"
  18
  19 namespace pp {
  20
  21 namespace {
  22
  23 static const char kPPPContentDecryptorInterface[] =
  24     PPP_CONTENTDECRYPTOR_PRIVATE_INTERFACE;
  25
  26 void Initialize(PP_Instance instance,
  27                 PP_Var key_system_arg) {
  28   void* object =
  29       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
  30   if (!object)
  31     return;
  32
  33   pp::Var key_system_var(pp::PASS_REF, key_system_arg);
  34   if (!key_system_var.is_string())
  35     return;
  36
  37   static_cast<ContentDecryptor_Private*>(object)->Initialize(
  38       key_system_var.AsString());
  39 }
  40
  41 void CreateSession(PP_Instance instance,
  42                    uint32_t session_id,
  43                    PP_Var type_arg,
  44                    PP_Var init_data_arg) {
  45   void* object =
  46       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
  47   if (!object)
  48     return;
  49
  50   pp::Var type_var(pp::PASS_REF, type_arg);
  51   if (!type_var.is_string())
  52     return;
  53
  54   pp::Var init_data_var(pp::PASS_REF, init_data_arg);
  55   if (!init_data_var.is_array_buffer())
  56     return;
  57   pp::VarArrayBuffer init_data_array_buffer(init_data_var);
  58
  59   static_cast<ContentDecryptor_Private*>(object)
  60       ->CreateSession(session_id, type_var.AsString(), init_data_array_buffer);
  61 }
  62
  63 void LoadSession(PP_Instance instance,
  64                  uint32_t session_id,
  65                  PP_Var web_session_id_arg) {
  66   void* object =
  67       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
  68   if (!object)
  69     return;
  70
  71   pp::Var web_session_id_var(pp::PASS_REF, web_session_id_arg);
  72   if (!web_session_id_var.is_string())
  73     return;
  74
  75   static_cast<ContentDecryptor_Private*>(object)
  76       ->LoadSession(session_id, web_session_id_var.AsString());
  77 }
  78
  79 void UpdateSession(PP_Instance instance,
  80                    uint32_t session_id,
  81                    PP_Var response_arg) {
  82   void* object =
  83       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
  84   if (!object)
  85     return;
  86
  87   pp::Var response_var(pp::PASS_REF, response_arg);
  88   if (!response_var.is_array_buffer())
  89     return;
  90   pp::VarArrayBuffer response(response_var);
  91
  92   static_cast<ContentDecryptor_Private*>(object)
  93       ->UpdateSession(session_id, response);
  94 }
  95
  96 void ReleaseSession(PP_Instance instance, uint32_t session_id) {
  97   void* object =
  98       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
  99   if (!object)
 100     return;
 101
 102   static_cast<ContentDecryptor_Private*>(object)->ReleaseSession(session_id);
 103 }
 104
 105
 106 void Decrypt(PP_Instance instance,
 107              PP_Resource encrypted_resource,
 108              const PP_EncryptedBlockInfo* encrypted_block_info) {
 109   pp::Buffer_Dev encrypted_block(encrypted_resource);
 110
 111   void* object =
 112       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
 113   if (!object)
 114     return;
 115
 116   static_cast<ContentDecryptor_Private*>(object)->Decrypt(
 117       encrypted_block,
 118       *encrypted_block_info);
 119 }
 120
 121 void InitializeAudioDecoder(
 122     PP_Instance instance,
 123     const PP_AudioDecoderConfig* decoder_config,
 124     PP_Resource extra_data_resource) {
 125   pp::Buffer_Dev extra_data_buffer(extra_data_resource);
 126
 127   void* object =
 128       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
 129   if (!object)
 130     return;
 131
 132   static_cast<ContentDecryptor_Private*>(object)->InitializeAudioDecoder(
 133       *decoder_config,
 134       extra_data_buffer);
 135 }
 136
 137 void InitializeVideoDecoder(
 138     PP_Instance instance,
 139     const PP_VideoDecoderConfig* decoder_config,
 140     PP_Resource extra_data_resource) {
 141   pp::Buffer_Dev extra_data_buffer(extra_data_resource);
 142
 143   void* object =
 144       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
 145   if (!object)
 146     return;
 147
 148   static_cast<ContentDecryptor_Private*>(object)->InitializeVideoDecoder(
 149       *decoder_config,
 150       extra_data_buffer);
 151 }
 152
 153 void DeinitializeDecoder(PP_Instance instance,
 154                          PP_DecryptorStreamType decoder_type,
 155                          uint32_t request_id) {
 156   void* object =
 157       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
 158   if (!object)
 159     return;
 160   static_cast<ContentDecryptor_Private*>(object)->DeinitializeDecoder(
 161       decoder_type,
 162       request_id);
 163 }
 164
 165 void ResetDecoder(PP_Instance instance,
 166                   PP_DecryptorStreamType decoder_type,
 167                   uint32_t request_id) {
 168   void* object =
 169       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
 170   if (!object)
 171     return;
 172   static_cast<ContentDecryptor_Private*>(object)->ResetDecoder(decoder_type,
 173                                                                request_id);
 174 }
 175
 176 void DecryptAndDecode(PP_Instance instance,
 177                       PP_DecryptorStreamType decoder_type,
 178                       PP_Resource encrypted_resource,
 179                       const PP_EncryptedBlockInfo* encrypted_block_info) {
 180   pp::Buffer_Dev encrypted_buffer(encrypted_resource);
 181
 182   void* object =
 183       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
 184   if (!object)
 185     return;
 186
 187   static_cast<ContentDecryptor_Private*>(object)->DecryptAndDecode(
 188       decoder_type,
 189       encrypted_buffer,
 190       *encrypted_block_info);
 191 }
 192
 193 const PPP_ContentDecryptor_Private ppp_content_decryptor = {
 194   &Initialize,
 195   &CreateSession,
 196   &LoadSession,
 197   &UpdateSession,
 198   &ReleaseSession,
 199   &Decrypt,
 200   &InitializeAudioDecoder,
 201   &InitializeVideoDecoder,
 202   &DeinitializeDecoder,
 203   &ResetDecoder,
 204   &DecryptAndDecode
 205 };
 206
 207 template <> const char* interface_name<PPB_ContentDecryptor_Private>() {
 208   return PPB_CONTENTDECRYPTOR_PRIVATE_INTERFACE;
 209 }
 210
 211 }  // namespace
 212
 213 ContentDecryptor_Private::ContentDecryptor_Private(Instance* instance)
 214     : associated_instance_(instance) {
 215   Module::Get()->AddPluginInterface(kPPPContentDecryptorInterface,
 216                                     &ppp_content_decryptor);
 217   instance->AddPerInstanceObject(kPPPContentDecryptorInterface, this);
 218 }
 219
 220 ContentDecryptor_Private::~ContentDecryptor_Private() {
 221   Instance::RemovePerInstanceObject(associated_instance_,
 222                                     kPPPContentDecryptorInterface,
 223                                     this);
 224 }
 225
 226 void ContentDecryptor_Private::SessionCreated(
 227     uint32_t session_id,
 228     const std::string& web_session_id) {
 229   if (has_interface<PPB_ContentDecryptor_Private>()) {
 230     pp::Var web_session_id_var(web_session_id);
 231     get_interface<PPB_ContentDecryptor_Private>()->SessionCreated(
 232         associated_instance_.pp_instance(),
 233         session_id,
 234         web_session_id_var.pp_var());
 235   }
 236 }
 237
 238 void ContentDecryptor_Private::SessionMessage(uint32_t session_id,
 239                                               pp::VarArrayBuffer message,
 240                                               const std::string& default_url) {
 241   if (has_interface<PPB_ContentDecryptor_Private>()) {
 242     pp::Var default_url_var(default_url);
 243     get_interface<PPB_ContentDecryptor_Private>()->SessionMessage(
 244         associated_instance_.pp_instance(),
 245         session_id,
 246         message.pp_var(),
 247         default_url_var.pp_var());
 248   }
 249 }
 250
 251 void ContentDecryptor_Private::SessionReady(uint32_t session_id) {
 252   if (has_interface<PPB_ContentDecryptor_Private>()) {
 253     get_interface<PPB_ContentDecryptor_Private>()->SessionReady(
 254         associated_instance_.pp_instance(), session_id);
 255   }
 256 }
 257
 258 void ContentDecryptor_Private::SessionClosed(uint32_t session_id) {
 259   if (has_interface<PPB_ContentDecryptor_Private>()) {
 260     get_interface<PPB_ContentDecryptor_Private>()->SessionClosed(
 261         associated_instance_.pp_instance(), session_id);
 262   }
 263 }
 264
 265 void ContentDecryptor_Private::SessionError(uint32_t session_id,
 266                                             int32_t media_error,
 267                                             int32_t system_code) {
 268   if (has_interface<PPB_ContentDecryptor_Private>()) {
 269     get_interface<PPB_ContentDecryptor_Private>()->SessionError(
 270         associated_instance_.pp_instance(),
 271         session_id,
 272         media_error,
 273         system_code);
 274   }
 275 }
 276
 277 void ContentDecryptor_Private::DeliverBlock(
 278     pp::Buffer_Dev decrypted_block,
 279     const PP_DecryptedBlockInfo& decrypted_block_info) {
 280   if (has_interface<PPB_ContentDecryptor_Private>()) {
 281     get_interface<PPB_ContentDecryptor_Private>()->DeliverBlock(
 282         associated_instance_.pp_instance(),
 283         decrypted_block.pp_resource(),
 284         &decrypted_block_info);
 285   }
 286 }
 287
 288 void ContentDecryptor_Private::DecoderInitializeDone(
 289     PP_DecryptorStreamType decoder_type,
 290     uint32_t request_id,
 291     bool success) {
 292   if (has_interface<PPB_ContentDecryptor_Private>()) {
 293     get_interface<PPB_ContentDecryptor_Private>()->DecoderInitializeDone(
 294         associated_instance_.pp_instance(),
 295         decoder_type,
 296         request_id,
 297         PP_FromBool(success));
 298   }
 299 }
 300
 301 void ContentDecryptor_Private::DecoderDeinitializeDone(
 302     PP_DecryptorStreamType decoder_type,
 303     uint32_t request_id) {
 304   if (has_interface<PPB_ContentDecryptor_Private>()) {
 305     get_interface<PPB_ContentDecryptor_Private>()->DecoderDeinitializeDone(
 306         associated_instance_.pp_instance(),
 307         decoder_type,
 308         request_id);
 309   }
 310 }
 311
 312 void ContentDecryptor_Private::DecoderResetDone(
 313     PP_DecryptorStreamType decoder_type,
 314     uint32_t request_id) {
 315   if (has_interface<PPB_ContentDecryptor_Private>()) {
 316     get_interface<PPB_ContentDecryptor_Private>()->DecoderResetDone(
 317         associated_instance_.pp_instance(),
 318         decoder_type,
 319         request_id);
 320   }
 321 }
 322
 323 void ContentDecryptor_Private::DeliverFrame(
 324     pp::Buffer_Dev decrypted_frame,
 325     const PP_DecryptedFrameInfo& decrypted_frame_info) {
 326   if (has_interface<PPB_ContentDecryptor_Private>()) {
 327     get_interface<PPB_ContentDecryptor_Private>()->DeliverFrame(
 328         associated_instance_.pp_instance(),
 329         decrypted_frame.pp_resource(),
 330         &decrypted_frame_info);
 331   }
 332 }
 333
 334 void ContentDecryptor_Private::DeliverSamples(
 335     pp::Buffer_Dev audio_frames,
 336     const PP_DecryptedSampleInfo& decrypted_sample_info) {
 337   if (has_interface<PPB_ContentDecryptor_Private>()) {
 338     get_interface<PPB_ContentDecryptor_Private>()->DeliverSamples(
 339         associated_instance_.pp_instance(),
 340         audio_frames.pp_resource(),
 341         &decrypted_sample_info);
 342   }
 343 }
 344
 345 }  // namespace pp