src/media/cdm/ppapi/cdm_adapter.cc

   1 // Copyright 2013 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/cdm/ppapi/cdm_adapter.h"
   6
   7 #include "media/base/limits.h"
   8 #include "media/cdm/ppapi/cdm_file_io_impl.h"
   9 #include "media/cdm/ppapi/cdm_helpers.h"
  10 #include "media/cdm/ppapi/cdm_logging.h"
  11 #include "media/cdm/ppapi/supported_cdm_versions.h"
  12 #include "ppapi/c/ppb_console.h"
  13 #include "ppapi/cpp/private/uma_private.h"
  14
  15 #if defined(CHECK_DOCUMENT_URL)
  16 #include "ppapi/cpp/dev/url_util_dev.h"
  17 #include "ppapi/cpp/instance_handle.h"
  18 #endif  // defined(CHECK_DOCUMENT_URL)
  19
  20 namespace {
  21
  22 // Constants for UMA reporting of file size (in KB) via HistogramCustomCounts().
  23 // Note that the histogram is log-scaled (rather than linear).
  24 const uint32_t kSizeKBMin = 1;
  25 const uint32_t kSizeKBMax = 512 * 1024;  // 512MB
  26 const uint32_t kSizeKBBuckets = 100;
  27
  28 #if !defined(NDEBUG)
  29   #define DLOG_TO_CONSOLE(message) LogToConsole(message);
  30 #else
  31   #define DLOG_TO_CONSOLE(message) (void)(message);
  32 #endif
  33
  34 bool IsMainThread() {
  35   return pp::Module::Get()->core()->IsMainThread();
  36 }
  37
  38 // Posts a task to run |cb| on the main thread. The task is posted even if the
  39 // current thread is the main thread.
  40 void PostOnMain(pp::CompletionCallback cb) {
  41   pp::Module::Get()->core()->CallOnMainThread(0, cb, PP_OK);
  42 }
  43
  44 // Ensures |cb| is called on the main thread, either because the current thread
  45 // is the main thread or by posting it to the main thread.
  46 void CallOnMain(pp::CompletionCallback cb) {
  47   // TODO(tomfinegan): This is only necessary because PPAPI doesn't allow calls
  48   // off the main thread yet. Remove this once the change lands.
  49   if (IsMainThread())
  50     cb.Run(PP_OK);
  51   else
  52     PostOnMain(cb);
  53 }
  54
  55 // Configures a cdm::InputBuffer. |subsamples| must exist as long as
  56 // |input_buffer| is in use.
  57 void ConfigureInputBuffer(
  58     const pp::Buffer_Dev& encrypted_buffer,
  59     const PP_EncryptedBlockInfo& encrypted_block_info,
  60     std::vector<cdm::SubsampleEntry>* subsamples,
  61     cdm::InputBuffer* input_buffer) {
  62   PP_DCHECK(subsamples);
  63   PP_DCHECK(!encrypted_buffer.is_null());
  64
  65   input_buffer->data = static_cast<uint8_t*>(encrypted_buffer.data());
  66   input_buffer->data_size = encrypted_block_info.data_size;
  67   PP_DCHECK(encrypted_buffer.size() >= input_buffer->data_size);
  68
  69   PP_DCHECK(encrypted_block_info.key_id_size <=
  70             arraysize(encrypted_block_info.key_id));
  71   input_buffer->key_id_size = encrypted_block_info.key_id_size;
  72   input_buffer->key_id = input_buffer->key_id_size > 0 ?
  73       encrypted_block_info.key_id : NULL;
  74
  75   PP_DCHECK(encrypted_block_info.iv_size <= arraysize(encrypted_block_info.iv));
  76   input_buffer->iv_size = encrypted_block_info.iv_size;
  77   input_buffer->iv = encrypted_block_info.iv_size > 0 ?
  78       encrypted_block_info.iv : NULL;
  79
  80   input_buffer->num_subsamples = encrypted_block_info.num_subsamples;
  81   if (encrypted_block_info.num_subsamples > 0) {
  82     subsamples->reserve(encrypted_block_info.num_subsamples);
  83
  84     for (uint32_t i = 0; i < encrypted_block_info.num_subsamples; ++i) {
  85       subsamples->push_back(cdm::SubsampleEntry(
  86           encrypted_block_info.subsamples[i].clear_bytes,
  87           encrypted_block_info.subsamples[i].cipher_bytes));
  88     }
  89
  90     input_buffer->subsamples = &(*subsamples)[0];
  91   }
  92
  93   input_buffer->timestamp = encrypted_block_info.tracking_info.timestamp;
  94 }
  95
  96 PP_DecryptResult CdmStatusToPpDecryptResult(cdm::Status status) {
  97   switch (status) {
  98     case cdm::kSuccess:
  99       return PP_DECRYPTRESULT_SUCCESS;
 100     case cdm::kNoKey:
 101       return PP_DECRYPTRESULT_DECRYPT_NOKEY;
 102     case cdm::kNeedMoreData:
 103       return PP_DECRYPTRESULT_NEEDMOREDATA;
 104     case cdm::kDecryptError:
 105       return PP_DECRYPTRESULT_DECRYPT_ERROR;
 106     case cdm::kDecodeError:
 107       return PP_DECRYPTRESULT_DECODE_ERROR;
 108     default:
 109       PP_NOTREACHED();
 110       return PP_DECRYPTRESULT_DECODE_ERROR;
 111   }
 112 }
 113
 114 PP_DecryptedFrameFormat CdmVideoFormatToPpDecryptedFrameFormat(
 115     cdm::VideoFormat format) {
 116   switch (format) {
 117     case cdm::kYv12:
 118       return PP_DECRYPTEDFRAMEFORMAT_YV12;
 119     case cdm::kI420:
 120       return PP_DECRYPTEDFRAMEFORMAT_I420;
 121     default:
 122       return PP_DECRYPTEDFRAMEFORMAT_UNKNOWN;
 123   }
 124 }
 125
 126 PP_DecryptedSampleFormat CdmAudioFormatToPpDecryptedSampleFormat(
 127     cdm::AudioFormat format) {
 128   switch (format) {
 129     case cdm::kAudioFormatU8:
 130       return PP_DECRYPTEDSAMPLEFORMAT_U8;
 131     case cdm::kAudioFormatS16:
 132       return PP_DECRYPTEDSAMPLEFORMAT_S16;
 133     case cdm::kAudioFormatS32:
 134       return PP_DECRYPTEDSAMPLEFORMAT_S32;
 135     case cdm::kAudioFormatF32:
 136       return PP_DECRYPTEDSAMPLEFORMAT_F32;
 137     case cdm::kAudioFormatPlanarS16:
 138       return PP_DECRYPTEDSAMPLEFORMAT_PLANAR_S16;
 139     case cdm::kAudioFormatPlanarF32:
 140       return PP_DECRYPTEDSAMPLEFORMAT_PLANAR_F32;
 141     default:
 142       return PP_DECRYPTEDSAMPLEFORMAT_UNKNOWN;
 143   }
 144 }
 145
 146 cdm::AudioDecoderConfig::AudioCodec PpAudioCodecToCdmAudioCodec(
 147     PP_AudioCodec codec) {
 148   switch (codec) {
 149     case PP_AUDIOCODEC_VORBIS:
 150       return cdm::AudioDecoderConfig::kCodecVorbis;
 151     case PP_AUDIOCODEC_AAC:
 152       return cdm::AudioDecoderConfig::kCodecAac;
 153     default:
 154       return cdm::AudioDecoderConfig::kUnknownAudioCodec;
 155   }
 156 }
 157
 158 cdm::VideoDecoderConfig::VideoCodec PpVideoCodecToCdmVideoCodec(
 159     PP_VideoCodec codec) {
 160   switch (codec) {
 161     case PP_VIDEOCODEC_VP8:
 162       return cdm::VideoDecoderConfig::kCodecVp8;
 163     case PP_VIDEOCODEC_H264:
 164       return cdm::VideoDecoderConfig::kCodecH264;
 165     case PP_VIDEOCODEC_VP9:
 166       return cdm::VideoDecoderConfig::kCodecVp9;
 167     default:
 168       return cdm::VideoDecoderConfig::kUnknownVideoCodec;
 169   }
 170 }
 171
 172 cdm::VideoDecoderConfig::VideoCodecProfile PpVCProfileToCdmVCProfile(
 173     PP_VideoCodecProfile profile) {
 174   switch (profile) {
 175     case PP_VIDEOCODECPROFILE_NOT_NEEDED:
 176       return cdm::VideoDecoderConfig::kProfileNotNeeded;
 177     case PP_VIDEOCODECPROFILE_H264_BASELINE:
 178       return cdm::VideoDecoderConfig::kH264ProfileBaseline;
 179     case PP_VIDEOCODECPROFILE_H264_MAIN:
 180       return cdm::VideoDecoderConfig::kH264ProfileMain;
 181     case PP_VIDEOCODECPROFILE_H264_EXTENDED:
 182       return cdm::VideoDecoderConfig::kH264ProfileExtended;
 183     case PP_VIDEOCODECPROFILE_H264_HIGH:
 184       return cdm::VideoDecoderConfig::kH264ProfileHigh;
 185     case PP_VIDEOCODECPROFILE_H264_HIGH_10:
 186       return cdm::VideoDecoderConfig::kH264ProfileHigh10;
 187     case PP_VIDEOCODECPROFILE_H264_HIGH_422:
 188       return cdm::VideoDecoderConfig::kH264ProfileHigh422;
 189     case PP_VIDEOCODECPROFILE_H264_HIGH_444_PREDICTIVE:
 190       return cdm::VideoDecoderConfig::kH264ProfileHigh444Predictive;
 191     default:
 192       return cdm::VideoDecoderConfig::kUnknownVideoCodecProfile;
 193   }
 194 }
 195
 196 cdm::VideoFormat PpDecryptedFrameFormatToCdmVideoFormat(
 197     PP_DecryptedFrameFormat format) {
 198   switch (format) {
 199     case PP_DECRYPTEDFRAMEFORMAT_YV12:
 200       return cdm::kYv12;
 201     case PP_DECRYPTEDFRAMEFORMAT_I420:
 202       return cdm::kI420;
 203     default:
 204       return cdm::kUnknownVideoFormat;
 205   }
 206 }
 207
 208 cdm::StreamType PpDecryptorStreamTypeToCdmStreamType(
 209     PP_DecryptorStreamType stream_type) {
 210   switch (stream_type) {
 211     case PP_DECRYPTORSTREAMTYPE_AUDIO:
 212       return cdm::kStreamTypeAudio;
 213     case PP_DECRYPTORSTREAMTYPE_VIDEO:
 214       return cdm::kStreamTypeVideo;
 215   }
 216
 217   PP_NOTREACHED();
 218   return cdm::kStreamTypeVideo;
 219 }
 220
 221 cdm::SessionType PpSessionTypeToCdmSessionType(PP_SessionType session_type) {
 222   switch (session_type) {
 223     case PP_SESSIONTYPE_TEMPORARY:
 224       return cdm::kTemporary;
 225     case PP_SESSIONTYPE_PERSISTENT:
 226       return cdm::kPersistent;
 227     default:
 228       PP_NOTREACHED();
 229       return cdm::kTemporary;
 230   }
 231 }
 232
 233 PP_CdmExceptionCode CdmExceptionTypeToPpCdmExceptionType(cdm::Error error) {
 234   switch (error) {
 235     case cdm::kNotSupportedError:
 236       return PP_CDMEXCEPTIONCODE_NOTSUPPORTEDERROR;
 237     case cdm::kInvalidStateError:
 238       return PP_CDMEXCEPTIONCODE_INVALIDSTATEERROR;
 239     case cdm::kInvalidAccessError:
 240       return PP_CDMEXCEPTIONCODE_INVALIDACCESSERROR;
 241     case cdm::kQuotaExceededError:
 242       return PP_CDMEXCEPTIONCODE_QUOTAEXCEEDEDERROR;
 243     case cdm::kUnknownError:
 244       return PP_CDMEXCEPTIONCODE_UNKNOWNERROR;
 245     case cdm::kClientError:
 246       return PP_CDMEXCEPTIONCODE_CLIENTERROR;
 247     case cdm::kOutputError:
 248       return PP_CDMEXCEPTIONCODE_OUTPUTERROR;
 249     default:
 250       PP_NOTREACHED();
 251       return PP_CDMEXCEPTIONCODE_UNKNOWNERROR;
 252   }
 253 }
 254
 255 }  // namespace
 256
 257 namespace media {
 258
 259 CdmAdapter::CdmAdapter(PP_Instance instance, pp::Module* module)
 260     : pp::Instance(instance),
 261       pp::ContentDecryptor_Private(this),
 262 #if defined(OS_CHROMEOS)
 263       output_protection_(this),
 264       platform_verification_(this),
 265       output_link_mask_(0),
 266       output_protection_mask_(0),
 267       query_output_protection_in_progress_(false),
 268       uma_for_output_protection_query_reported_(false),
 269       uma_for_output_protection_positive_result_reported_(false),
 270 #endif
 271       allocator_(this),
 272       cdm_(NULL),
 273       deferred_initialize_audio_decoder_(false),
 274       deferred_audio_decoder_config_id_(0),
 275       deferred_initialize_video_decoder_(false),
 276       deferred_video_decoder_config_id_(0),
 277       last_read_file_size_kb_(0),
 278       file_size_uma_reported_(false) {
 279   callback_factory_.Initialize(this);
 280 }
 281
 282 CdmAdapter::~CdmAdapter() {}
 283
 284 bool CdmAdapter::CreateCdmInstance(const std::string& key_system) {
 285   PP_DCHECK(!cdm_);
 286   cdm_ = make_linked_ptr(CdmWrapper::Create(
 287       key_system.data(), key_system.size(), GetCdmHost, this));
 288   bool success = cdm_ != NULL;
 289
 290   const std::string message = "CDM instance for " + key_system +
 291                               (success ? "" : " could not be") + " created.";
 292   DLOG_TO_CONSOLE(message);
 293   CDM_DLOG() << message;
 294
 295   return success;
 296 }
 297
 298 // No errors should be reported in this function because the spec says:
 299 // "Store this new error object internally with the MediaKeys instance being
 300 // created. This will be used to fire an error against any session created for
 301 // this instance." These errors will be reported during session creation
 302 // (CreateSession()) or session loading (LoadSession()).
 303 // TODO(xhwang): If necessary, we need to store the error here if we want to
 304 // support more specific error reporting (other than "Unknown").
 305 void CdmAdapter::Initialize(const std::string& key_system) {
 306   PP_DCHECK(!key_system.empty());
 307   PP_DCHECK(key_system_.empty() || (key_system_ == key_system && cdm_));
 308
 309 #if defined(CHECK_DOCUMENT_URL)
 310   PP_URLComponents_Dev url_components = {};
 311   const pp::URLUtil_Dev* url_util = pp::URLUtil_Dev::Get();
 312   if (!url_util)
 313     return;
 314   pp::Var href = url_util->GetDocumentURL(pp::InstanceHandle(pp_instance()),
 315                                           &url_components);
 316   PP_DCHECK(href.is_string());
 317   std::string url = href.AsString();
 318   PP_DCHECK(!url.empty());
 319   std::string url_scheme =
 320       url.substr(url_components.scheme.begin, url_components.scheme.len);
 321   if (url_scheme != "file") {
 322     // Skip this check for file:// URLs as they don't have a host component.
 323     PP_DCHECK(url_components.host.begin);
 324     PP_DCHECK(0 < url_components.host.len);
 325   }
 326 #endif  // defined(CHECK_DOCUMENT_URL)
 327
 328   if (!cdm_ && !CreateCdmInstance(key_system))
 329     return;
 330
 331   PP_DCHECK(cdm_);
 332   key_system_ = key_system;
 333 }
 334
 335 void CdmAdapter::SetServerCertificate(uint32_t promise_id,
 336                                       pp::VarArrayBuffer server_certificate) {
 337   const uint8_t* server_certificate_ptr =
 338       static_cast<const uint8_t*>(server_certificate.Map());
 339   const uint32_t server_certificate_size = server_certificate.ByteLength();
 340
 341   if (!server_certificate_ptr ||
 342       server_certificate_size < media::limits::kMinCertificateLength ||
 343       server_certificate_size > media::limits::kMaxCertificateLength) {
 344     RejectPromise(
 345         promise_id, cdm::kInvalidAccessError, 0, "Incorrect certificate.");
 346     return;
 347   }
 348
 349   // Initialize() doesn't report an error, so SetServerCertificate() can be
 350   // called even if Initialize() failed.
 351   // TODO(jrummell): Remove this code when prefixed EME gets removed.
 352   if (!cdm_) {
 353     RejectPromise(promise_id,
 354                   cdm::kInvalidStateError,
 355                   0,
 356                   "CDM has not been initialized.");
 357     return;
 358   }
 359
 360   cdm_->SetServerCertificate(
 361       promise_id, server_certificate_ptr, server_certificate_size);
 362 }
 363
 364 void CdmAdapter::CreateSession(uint32_t promise_id,
 365                                const std::string& init_data_type,
 366                                pp::VarArrayBuffer init_data,
 367                                PP_SessionType session_type) {
 368   // Initialize() doesn't report an error, so CreateSession() can be called
 369   // even if Initialize() failed.
 370   // TODO(jrummell): Remove this code when prefixed EME gets removed.
 371   // TODO(jrummell): Verify that Initialize() failing does not resolve the
 372   // MediaKeys.create() promise.
 373   if (!cdm_) {
 374     RejectPromise(promise_id,
 375                   cdm::kInvalidStateError,
 376                   0,
 377                   "CDM has not been initialized.");
 378     return;
 379   }
 380
 381   cdm_->CreateSession(promise_id,
 382                       init_data_type.data(),
 383                       init_data_type.size(),
 384                       static_cast<const uint8_t*>(init_data.Map()),
 385                       init_data.ByteLength(),
 386                       PpSessionTypeToCdmSessionType(session_type));
 387 }
 388
 389 void CdmAdapter::LoadSession(uint32_t promise_id,
 390                              const std::string& web_session_id) {
 391   // Initialize() doesn't report an error, so LoadSession() can be called
 392   // even if Initialize() failed.
 393   // TODO(jrummell): Remove this code when prefixed EME gets removed.
 394   // TODO(jrummell): Verify that Initialize() failing does not resolve the
 395   // MediaKeys.create() promise.
 396   if (!cdm_) {
 397     RejectPromise(promise_id,
 398                   cdm::kInvalidStateError,
 399                   0,
 400                   "CDM has not been initialized.");
 401     return;
 402   }
 403
 404   cdm_->LoadSession(promise_id, web_session_id.data(), web_session_id.size());
 405 }
 406
 407 void CdmAdapter::UpdateSession(uint32_t promise_id,
 408                                const std::string& web_session_id,
 409                                pp::VarArrayBuffer response) {
 410   const uint8_t* response_ptr = static_cast<const uint8_t*>(response.Map());
 411   const uint32_t response_size = response.ByteLength();
 412
 413   PP_DCHECK(!web_session_id.empty());
 414   PP_DCHECK(response_ptr);
 415   PP_DCHECK(response_size > 0);
 416
 417   cdm_->UpdateSession(promise_id,
 418                       web_session_id.data(),
 419                       web_session_id.length(),
 420                       response_ptr,
 421                       response_size);
 422 }
 423
 424 void CdmAdapter::CloseSession(uint32_t promise_id,
 425                               const std::string& web_session_id) {
 426   cdm_->CloseSession(
 427       promise_id, web_session_id.data(), web_session_id.length());
 428 }
 429
 430 void CdmAdapter::RemoveSession(uint32_t promise_id,
 431                                const std::string& web_session_id) {
 432   cdm_->RemoveSession(
 433       promise_id, web_session_id.data(), web_session_id.length());
 434 }
 435
 436 void CdmAdapter::GetUsableKeyIds(uint32_t promise_id,
 437                                  const std::string& web_session_id) {
 438   cdm_->GetUsableKeyIds(
 439       promise_id, web_session_id.data(), web_session_id.length());
 440 }
 441
 442 // Note: In the following decryption/decoding related functions, errors are NOT
 443 // reported via KeyError, but are reported via corresponding PPB calls.
 444
 445 void CdmAdapter::Decrypt(pp::Buffer_Dev encrypted_buffer,
 446                          const PP_EncryptedBlockInfo& encrypted_block_info) {
 447   PP_DCHECK(!encrypted_buffer.is_null());
 448
 449   // Release a buffer that the caller indicated it is finished with.
 450   allocator_.Release(encrypted_block_info.tracking_info.buffer_id);
 451
 452   cdm::Status status = cdm::kDecryptError;
 453   LinkedDecryptedBlock decrypted_block(new DecryptedBlockImpl());
 454
 455   if (cdm_) {
 456     cdm::InputBuffer input_buffer;
 457     std::vector<cdm::SubsampleEntry> subsamples;
 458     ConfigureInputBuffer(encrypted_buffer, encrypted_block_info, &subsamples,
 459                          &input_buffer);
 460     status = cdm_->Decrypt(input_buffer, decrypted_block.get());
 461     PP_DCHECK(status != cdm::kSuccess ||
 462               (decrypted_block->DecryptedBuffer() &&
 463                decrypted_block->DecryptedBuffer()->Size()));
 464   }
 465
 466   CallOnMain(callback_factory_.NewCallback(
 467       &CdmAdapter::DeliverBlock,
 468       status,
 469       decrypted_block,
 470       encrypted_block_info.tracking_info));
 471 }
 472
 473 void CdmAdapter::InitializeAudioDecoder(
 474     const PP_AudioDecoderConfig& decoder_config,
 475     pp::Buffer_Dev extra_data_buffer) {
 476   PP_DCHECK(!deferred_initialize_audio_decoder_);
 477   PP_DCHECK(deferred_audio_decoder_config_id_ == 0);
 478   cdm::Status status = cdm::kSessionError;
 479   if (cdm_) {
 480     cdm::AudioDecoderConfig cdm_decoder_config;
 481     cdm_decoder_config.codec =
 482         PpAudioCodecToCdmAudioCodec(decoder_config.codec);
 483     cdm_decoder_config.channel_count = decoder_config.channel_count;
 484     cdm_decoder_config.bits_per_channel = decoder_config.bits_per_channel;
 485     cdm_decoder_config.samples_per_second = decoder_config.samples_per_second;
 486     cdm_decoder_config.extra_data =
 487         static_cast<uint8_t*>(extra_data_buffer.data());
 488     cdm_decoder_config.extra_data_size = extra_data_buffer.size();
 489     status = cdm_->InitializeAudioDecoder(cdm_decoder_config);
 490   }
 491
 492   if (status == cdm::kDeferredInitialization) {
 493     deferred_initialize_audio_decoder_ = true;
 494     deferred_audio_decoder_config_id_ = decoder_config.request_id;
 495     return;
 496   }
 497
 498   CallOnMain(callback_factory_.NewCallback(
 499       &CdmAdapter::DecoderInitializeDone,
 500       PP_DECRYPTORSTREAMTYPE_AUDIO,
 501       decoder_config.request_id,
 502       status == cdm::kSuccess));
 503 }
 504
 505 void CdmAdapter::InitializeVideoDecoder(
 506     const PP_VideoDecoderConfig& decoder_config,
 507     pp::Buffer_Dev extra_data_buffer) {
 508   PP_DCHECK(!deferred_initialize_video_decoder_);
 509   PP_DCHECK(deferred_video_decoder_config_id_ == 0);
 510   cdm::Status status = cdm::kSessionError;
 511   if (cdm_) {
 512     cdm::VideoDecoderConfig cdm_decoder_config;
 513     cdm_decoder_config.codec =
 514         PpVideoCodecToCdmVideoCodec(decoder_config.codec);
 515     cdm_decoder_config.profile =
 516         PpVCProfileToCdmVCProfile(decoder_config.profile);
 517     cdm_decoder_config.format =
 518         PpDecryptedFrameFormatToCdmVideoFormat(decoder_config.format);
 519     cdm_decoder_config.coded_size.width = decoder_config.width;
 520     cdm_decoder_config.coded_size.height = decoder_config.height;
 521     cdm_decoder_config.extra_data =
 522         static_cast<uint8_t*>(extra_data_buffer.data());
 523     cdm_decoder_config.extra_data_size = extra_data_buffer.size();
 524     status = cdm_->InitializeVideoDecoder(cdm_decoder_config);
 525   }
 526
 527   if (status == cdm::kDeferredInitialization) {
 528     deferred_initialize_video_decoder_ = true;
 529     deferred_video_decoder_config_id_ = decoder_config.request_id;
 530     return;
 531   }
 532
 533   CallOnMain(callback_factory_.NewCallback(
 534       &CdmAdapter::DecoderInitializeDone,
 535       PP_DECRYPTORSTREAMTYPE_VIDEO,
 536       decoder_config.request_id,
 537       status == cdm::kSuccess));
 538 }
 539
 540 void CdmAdapter::DeinitializeDecoder(PP_DecryptorStreamType decoder_type,
 541                                      uint32_t request_id) {
 542   PP_DCHECK(cdm_);  // InitializeXxxxxDecoder should have succeeded.
 543   if (cdm_) {
 544     cdm_->DeinitializeDecoder(
 545         PpDecryptorStreamTypeToCdmStreamType(decoder_type));
 546   }
 547
 548   CallOnMain(callback_factory_.NewCallback(
 549       &CdmAdapter::DecoderDeinitializeDone,
 550       decoder_type,
 551       request_id));
 552 }
 553
 554 void CdmAdapter::ResetDecoder(PP_DecryptorStreamType decoder_type,
 555                               uint32_t request_id) {
 556   PP_DCHECK(cdm_);  // InitializeXxxxxDecoder should have succeeded.
 557   if (cdm_)
 558     cdm_->ResetDecoder(PpDecryptorStreamTypeToCdmStreamType(decoder_type));
 559
 560   CallOnMain(callback_factory_.NewCallback(&CdmAdapter::DecoderResetDone,
 561                                            decoder_type,
 562                                            request_id));
 563 }
 564
 565 void CdmAdapter::DecryptAndDecode(
 566     PP_DecryptorStreamType decoder_type,
 567     pp::Buffer_Dev encrypted_buffer,
 568     const PP_EncryptedBlockInfo& encrypted_block_info) {
 569   PP_DCHECK(cdm_);  // InitializeXxxxxDecoder should have succeeded.
 570   // Release a buffer that the caller indicated it is finished with.
 571   allocator_.Release(encrypted_block_info.tracking_info.buffer_id);
 572
 573   cdm::InputBuffer input_buffer;
 574   std::vector<cdm::SubsampleEntry> subsamples;
 575   if (cdm_ && !encrypted_buffer.is_null()) {
 576     ConfigureInputBuffer(encrypted_buffer,
 577                          encrypted_block_info,
 578                          &subsamples,
 579                          &input_buffer);
 580   }
 581
 582   cdm::Status status = cdm::kDecodeError;
 583
 584   switch (decoder_type) {
 585     case PP_DECRYPTORSTREAMTYPE_VIDEO: {
 586       LinkedVideoFrame video_frame(new VideoFrameImpl());
 587       if (cdm_)
 588         status = cdm_->DecryptAndDecodeFrame(input_buffer, video_frame.get());
 589       CallOnMain(callback_factory_.NewCallback(
 590           &CdmAdapter::DeliverFrame,
 591           status,
 592           video_frame,
 593           encrypted_block_info.tracking_info));
 594       return;
 595     }
 596
 597     case PP_DECRYPTORSTREAMTYPE_AUDIO: {
 598       LinkedAudioFrames audio_frames(new AudioFramesImpl());
 599       if (cdm_) {
 600         status = cdm_->DecryptAndDecodeSamples(input_buffer,
 601                                                audio_frames.get());
 602       }
 603       CallOnMain(callback_factory_.NewCallback(
 604           &CdmAdapter::DeliverSamples,
 605           status,
 606           audio_frames,
 607           encrypted_block_info.tracking_info));
 608       return;
 609     }
 610
 611     default:
 612       PP_NOTREACHED();
 613       return;
 614   }
 615 }
 616
 617 cdm::Buffer* CdmAdapter::Allocate(uint32_t capacity) {
 618   return allocator_.Allocate(capacity);
 619 }
 620
 621 void CdmAdapter::SetTimer(int64_t delay_ms, void* context) {
 622   // NOTE: doesn't really need to run on the main thread; could just as well run
 623   // on a helper thread if |cdm_| were thread-friendly and care was taken.  We
 624   // only use CallOnMainThread() here to get delayed-execution behavior.
 625   pp::Module::Get()->core()->CallOnMainThread(
 626       delay_ms,
 627       callback_factory_.NewCallback(&CdmAdapter::TimerExpired, context),
 628       PP_OK);
 629 }
 630
 631 void CdmAdapter::TimerExpired(int32_t result, void* context) {
 632   PP_DCHECK(result == PP_OK);
 633   cdm_->TimerExpired(context);
 634 }
 635
 636 cdm::Time CdmAdapter::GetCurrentWallTime() {
 637   return pp::Module::Get()->core()->GetTime();
 638 }
 639
 640 void CdmAdapter::OnResolveNewSessionPromise(uint32_t promise_id,
 641                                             const char* web_session_id,
 642                                             uint32_t web_session_id_length) {
 643   PostOnMain(callback_factory_.NewCallback(
 644       &CdmAdapter::SendPromiseResolvedWithSessionInternal,
 645       promise_id,
 646       std::string(web_session_id, web_session_id_length)));
 647 }
 648
 649 void CdmAdapter::OnResolvePromise(uint32_t promise_id) {
 650   PostOnMain(callback_factory_.NewCallback(
 651       &CdmAdapter::SendPromiseResolvedInternal, promise_id));
 652 }
 653
 654 void CdmAdapter::OnResolveKeyIdsPromise(uint32_t promise_id,
 655                                         const cdm::BinaryData* usable_key_ids,
 656                                         uint32_t usable_key_ids_length) {
 657   std::vector<std::vector<uint8> > key_ids;
 658   for (uint32_t i = 0; i < usable_key_ids_length; ++i) {
 659     key_ids.push_back(
 660         std::vector<uint8>(usable_key_ids[i].data,
 661                            usable_key_ids[i].data + usable_key_ids[i].length));
 662   }
 663   PostOnMain(callback_factory_.NewCallback(
 664       &CdmAdapter::SendPromiseResolvedWithUsableKeyIdsInternal,
 665       promise_id,
 666       key_ids));
 667 }
 668
 669 void CdmAdapter::OnRejectPromise(uint32_t promise_id,
 670                                  cdm::Error error,
 671                                  uint32_t system_code,
 672                                  const char* error_message,
 673                                  uint32_t error_message_length) {
 674   // UMA to investigate http://crbug.com/410630
 675   // TODO(xhwang): Remove after bug is fixed.
 676   if (system_code == 0x27) {
 677     pp::UMAPrivate uma_interface(this);
 678     uma_interface.HistogramCustomCounts("Media.EME.CdmFileIO.FileSizeKBOnError",
 679                                         last_read_file_size_kb_,
 680                                         kSizeKBMin,
 681                                         kSizeKBMax,
 682                                         kSizeKBBuckets);
 683   }
 684
 685   RejectPromise(promise_id,
 686                 error,
 687                 system_code,
 688                 std::string(error_message, error_message_length));
 689 }
 690
 691 void CdmAdapter::RejectPromise(uint32_t promise_id,
 692                                cdm::Error error,
 693                                uint32_t system_code,
 694                                const std::string& error_message) {
 695   PostOnMain(callback_factory_.NewCallback(
 696       &CdmAdapter::SendPromiseRejectedInternal,
 697       promise_id,
 698       SessionError(error, system_code, error_message)));
 699 }
 700
 701 void CdmAdapter::OnSessionMessage(const char* web_session_id,
 702                                   uint32_t web_session_id_length,
 703                                   const char* message,
 704                                   uint32_t message_length,
 705                                   const char* destination_url,
 706                                   uint32_t destination_url_length) {
 707   PostOnMain(callback_factory_.NewCallback(
 708       &CdmAdapter::SendSessionMessageInternal,
 709       std::string(web_session_id, web_session_id_length),
 710       std::vector<uint8>(message, message + message_length),
 711       std::string(destination_url, destination_url_length)));
 712 }
 713
 714 void CdmAdapter::OnSessionUsableKeysChange(const char* web_session_id,
 715                                            uint32_t web_session_id_length,
 716                                            bool has_additional_usable_key) {
 717   PostOnMain(callback_factory_.NewCallback(
 718       &CdmAdapter::SendSessionUsableKeysChangeInternal,
 719       std::string(web_session_id, web_session_id_length),
 720       has_additional_usable_key));
 721 }
 722
 723 void CdmAdapter::OnExpirationChange(const char* web_session_id,
 724                                     uint32_t web_session_id_length,
 725                                     cdm::Time new_expiry_time) {
 726   PostOnMain(callback_factory_.NewCallback(
 727       &CdmAdapter::SendExpirationChangeInternal,
 728       std::string(web_session_id, web_session_id_length),
 729       new_expiry_time));
 730 }
 731
 732 void CdmAdapter::OnSessionClosed(const char* web_session_id,
 733                                  uint32_t web_session_id_length) {
 734   PostOnMain(callback_factory_.NewCallback(
 735       &CdmAdapter::SendSessionClosedInternal,
 736       std::string(web_session_id, web_session_id_length)));
 737 }
 738
 739 void CdmAdapter::OnSessionError(const char* web_session_id,
 740                                 uint32_t web_session_id_length,
 741                                 cdm::Error error,
 742                                 uint32_t system_code,
 743                                 const char* error_message,
 744                                 uint32_t error_message_length) {
 745   PostOnMain(callback_factory_.NewCallback(
 746       &CdmAdapter::SendSessionErrorInternal,
 747       std::string(web_session_id, web_session_id_length),
 748       SessionError(error,
 749                    system_code,
 750                    std::string(error_message, error_message_length))));
 751 }
 752
 753 // Helpers to pass the event to Pepper.
 754
 755 void CdmAdapter::SendPromiseResolvedInternal(int32_t result,
 756                                              uint32_t promise_id) {
 757   PP_DCHECK(result == PP_OK);
 758   pp::ContentDecryptor_Private::PromiseResolved(promise_id);
 759 }
 760
 761 void CdmAdapter::SendPromiseResolvedWithSessionInternal(
 762     int32_t result,
 763     uint32_t promise_id,
 764     const std::string& web_session_id) {
 765   PP_DCHECK(result == PP_OK);
 766   pp::ContentDecryptor_Private::PromiseResolvedWithSession(promise_id,
 767                                                            web_session_id);
 768 }
 769
 770 void CdmAdapter::SendPromiseResolvedWithUsableKeyIdsInternal(
 771     int32_t result,
 772     uint32_t promise_id,
 773     std::vector<std::vector<uint8> > key_ids) {
 774   PP_DCHECK(result == PP_OK);
 775   pp::ContentDecryptor_Private::PromiseResolvedWithKeyIds(promise_id, key_ids);
 776 }
 777
 778 void CdmAdapter::SendPromiseRejectedInternal(int32_t result,
 779                                              uint32_t promise_id,
 780                                              const SessionError& error) {
 781   PP_DCHECK(result == PP_OK);
 782   pp::ContentDecryptor_Private::PromiseRejected(
 783       promise_id,
 784       CdmExceptionTypeToPpCdmExceptionType(error.error),
 785       error.system_code,
 786       error.error_description);
 787 }
 788
 789 void CdmAdapter::SendSessionMessageInternal(
 790     int32_t result,
 791     const std::string& web_session_id,
 792     const std::vector<uint8>& message,
 793     const std::string& destination_url) {
 794   PP_DCHECK(result == PP_OK);
 795
 796   pp::VarArrayBuffer message_array_buffer(message.size());
 797   if (message.size() > 0) {
 798     memcpy(message_array_buffer.Map(), message.data(), message.size());
 799   }
 800
 801   pp::ContentDecryptor_Private::SessionMessage(
 802       web_session_id, message_array_buffer, destination_url);
 803 }
 804
 805 void CdmAdapter::SendSessionReadyInternal(int32_t result,
 806                                           const std::string& web_session_id) {
 807   PP_DCHECK(result == PP_OK);
 808   pp::ContentDecryptor_Private::SessionReady(web_session_id);
 809 }
 810
 811 void CdmAdapter::SendSessionClosedInternal(int32_t result,
 812                                            const std::string& web_session_id) {
 813   PP_DCHECK(result == PP_OK);
 814   pp::ContentDecryptor_Private::SessionClosed(web_session_id);
 815 }
 816
 817 void CdmAdapter::SendSessionErrorInternal(int32_t result,
 818                                           const std::string& web_session_id,
 819                                           const SessionError& error) {
 820   PP_DCHECK(result == PP_OK);
 821   pp::ContentDecryptor_Private::SessionError(
 822       web_session_id,
 823       CdmExceptionTypeToPpCdmExceptionType(error.error),
 824       error.system_code,
 825       error.error_description);
 826 }
 827
 828 void CdmAdapter::SendSessionUsableKeysChangeInternal(
 829     int32_t result,
 830     const std::string& web_session_id,
 831     bool has_additional_usable_key) {
 832   PP_DCHECK(result == PP_OK);
 833   pp::ContentDecryptor_Private::SessionKeysChange(web_session_id,
 834                                                   has_additional_usable_key);
 835 }
 836
 837 void CdmAdapter::SendExpirationChangeInternal(int32_t result,
 838                                               const std::string& web_session_id,
 839                                               cdm::Time new_expiry_time) {
 840   PP_DCHECK(result == PP_OK);
 841   pp::ContentDecryptor_Private::SessionExpirationChange(web_session_id,
 842                                                         new_expiry_time);
 843 }
 844
 845 void CdmAdapter::DeliverBlock(int32_t result,
 846                               const cdm::Status& status,
 847                               const LinkedDecryptedBlock& decrypted_block,
 848                               const PP_DecryptTrackingInfo& tracking_info) {
 849   PP_DCHECK(result == PP_OK);
 850   PP_DecryptedBlockInfo decrypted_block_info = {};
 851   decrypted_block_info.tracking_info = tracking_info;
 852   decrypted_block_info.tracking_info.timestamp = decrypted_block->Timestamp();
 853   decrypted_block_info.tracking_info.buffer_id = 0;
 854   decrypted_block_info.data_size = 0;
 855   decrypted_block_info.result = CdmStatusToPpDecryptResult(status);
 856
 857   pp::Buffer_Dev buffer;
 858
 859   if (decrypted_block_info.result == PP_DECRYPTRESULT_SUCCESS) {
 860     PP_DCHECK(decrypted_block.get() && decrypted_block->DecryptedBuffer());
 861     if (!decrypted_block.get() || !decrypted_block->DecryptedBuffer()) {
 862       PP_NOTREACHED();
 863       decrypted_block_info.result = PP_DECRYPTRESULT_DECRYPT_ERROR;
 864     } else {
 865       PpbBuffer* ppb_buffer =
 866           static_cast<PpbBuffer*>(decrypted_block->DecryptedBuffer());
 867       decrypted_block_info.tracking_info.buffer_id = ppb_buffer->buffer_id();
 868       decrypted_block_info.data_size = ppb_buffer->Size();
 869
 870       buffer = ppb_buffer->TakeBuffer();
 871     }
 872   }
 873
 874   pp::ContentDecryptor_Private::DeliverBlock(buffer, decrypted_block_info);
 875 }
 876
 877 void CdmAdapter::DecoderInitializeDone(int32_t result,
 878                                        PP_DecryptorStreamType decoder_type,
 879                                        uint32_t request_id,
 880                                        bool success) {
 881   PP_DCHECK(result == PP_OK);
 882   pp::ContentDecryptor_Private::DecoderInitializeDone(decoder_type,
 883                                                       request_id,
 884                                                       success);
 885 }
 886
 887 void CdmAdapter::DecoderDeinitializeDone(int32_t result,
 888                                          PP_DecryptorStreamType decoder_type,
 889                                          uint32_t request_id) {
 890   pp::ContentDecryptor_Private::DecoderDeinitializeDone(decoder_type,
 891                                                         request_id);
 892 }
 893
 894 void CdmAdapter::DecoderResetDone(int32_t result,
 895                                   PP_DecryptorStreamType decoder_type,
 896                                   uint32_t request_id) {
 897   pp::ContentDecryptor_Private::DecoderResetDone(decoder_type, request_id);
 898 }
 899
 900 void CdmAdapter::DeliverFrame(
 901     int32_t result,
 902     const cdm::Status& status,
 903     const LinkedVideoFrame& video_frame,
 904     const PP_DecryptTrackingInfo& tracking_info) {
 905   PP_DCHECK(result == PP_OK);
 906   PP_DecryptedFrameInfo decrypted_frame_info = {};
 907   decrypted_frame_info.tracking_info.request_id = tracking_info.request_id;
 908   decrypted_frame_info.tracking_info.buffer_id = 0;
 909   decrypted_frame_info.result = CdmStatusToPpDecryptResult(status);
 910
 911   pp::Buffer_Dev buffer;
 912
 913   if (decrypted_frame_info.result == PP_DECRYPTRESULT_SUCCESS) {
 914     if (!IsValidVideoFrame(video_frame)) {
 915       PP_NOTREACHED();
 916       decrypted_frame_info.result = PP_DECRYPTRESULT_DECODE_ERROR;
 917     } else {
 918       PpbBuffer* ppb_buffer =
 919           static_cast<PpbBuffer*>(video_frame->FrameBuffer());
 920
 921       decrypted_frame_info.tracking_info.timestamp = video_frame->Timestamp();
 922       decrypted_frame_info.tracking_info.buffer_id = ppb_buffer->buffer_id();
 923       decrypted_frame_info.format =
 924           CdmVideoFormatToPpDecryptedFrameFormat(video_frame->Format());
 925       decrypted_frame_info.width = video_frame->Size().width;
 926       decrypted_frame_info.height = video_frame->Size().height;
 927       decrypted_frame_info.plane_offsets[PP_DECRYPTEDFRAMEPLANES_Y] =
 928           video_frame->PlaneOffset(cdm::VideoFrame::kYPlane);
 929       decrypted_frame_info.plane_offsets[PP_DECRYPTEDFRAMEPLANES_U] =
 930           video_frame->PlaneOffset(cdm::VideoFrame::kUPlane);
 931       decrypted_frame_info.plane_offsets[PP_DECRYPTEDFRAMEPLANES_V] =
 932           video_frame->PlaneOffset(cdm::VideoFrame::kVPlane);
 933       decrypted_frame_info.strides[PP_DECRYPTEDFRAMEPLANES_Y] =
 934           video_frame->Stride(cdm::VideoFrame::kYPlane);
 935       decrypted_frame_info.strides[PP_DECRYPTEDFRAMEPLANES_U] =
 936           video_frame->Stride(cdm::VideoFrame::kUPlane);
 937       decrypted_frame_info.strides[PP_DECRYPTEDFRAMEPLANES_V] =
 938           video_frame->Stride(cdm::VideoFrame::kVPlane);
 939
 940       buffer = ppb_buffer->TakeBuffer();
 941     }
 942   }
 943
 944   pp::ContentDecryptor_Private::DeliverFrame(buffer, decrypted_frame_info);
 945 }
 946
 947 void CdmAdapter::DeliverSamples(int32_t result,
 948                                 const cdm::Status& status,
 949                                 const LinkedAudioFrames& audio_frames,
 950                                 const PP_DecryptTrackingInfo& tracking_info) {
 951   PP_DCHECK(result == PP_OK);
 952
 953   PP_DecryptedSampleInfo decrypted_sample_info = {};
 954   decrypted_sample_info.tracking_info = tracking_info;
 955   decrypted_sample_info.tracking_info.timestamp = 0;
 956   decrypted_sample_info.tracking_info.buffer_id = 0;
 957   decrypted_sample_info.data_size = 0;
 958   decrypted_sample_info.result = CdmStatusToPpDecryptResult(status);
 959
 960   pp::Buffer_Dev buffer;
 961
 962   if (decrypted_sample_info.result == PP_DECRYPTRESULT_SUCCESS) {
 963     PP_DCHECK(audio_frames.get() && audio_frames->FrameBuffer());
 964     if (!audio_frames.get() || !audio_frames->FrameBuffer()) {
 965       PP_NOTREACHED();
 966       decrypted_sample_info.result = PP_DECRYPTRESULT_DECRYPT_ERROR;
 967     } else {
 968       PpbBuffer* ppb_buffer =
 969           static_cast<PpbBuffer*>(audio_frames->FrameBuffer());
 970
 971       decrypted_sample_info.tracking_info.buffer_id = ppb_buffer->buffer_id();
 972       decrypted_sample_info.data_size = ppb_buffer->Size();
 973       decrypted_sample_info.format =
 974           CdmAudioFormatToPpDecryptedSampleFormat(audio_frames->Format());
 975
 976       buffer = ppb_buffer->TakeBuffer();
 977     }
 978   }
 979
 980   pp::ContentDecryptor_Private::DeliverSamples(buffer, decrypted_sample_info);
 981 }
 982
 983 bool CdmAdapter::IsValidVideoFrame(const LinkedVideoFrame& video_frame) {
 984   if (!video_frame.get() ||
 985       !video_frame->FrameBuffer() ||
 986       (video_frame->Format() != cdm::kI420 &&
 987        video_frame->Format() != cdm::kYv12)) {
 988     CDM_DLOG() << "Invalid video frame!";
 989     return false;
 990   }
 991
 992   PpbBuffer* ppb_buffer = static_cast<PpbBuffer*>(video_frame->FrameBuffer());
 993
 994   for (uint32_t i = 0; i < cdm::VideoFrame::kMaxPlanes; ++i) {
 995     int plane_height = (i == cdm::VideoFrame::kYPlane) ?
 996         video_frame->Size().height : (video_frame->Size().height + 1) / 2;
 997     cdm::VideoFrame::VideoPlane plane =
 998         static_cast<cdm::VideoFrame::VideoPlane>(i);
 999     if (ppb_buffer->Size() < video_frame->PlaneOffset(plane) +
1000                              plane_height * video_frame->Stride(plane)) {
1001       return false;
1002     }
1003   }
1004
1005   return true;
1006 }
1007
1008 void CdmAdapter::OnFirstFileRead(int32_t file_size_bytes) {
1009   PP_DCHECK(IsMainThread());
1010   PP_DCHECK(file_size_bytes >= 0);
1011
1012   last_read_file_size_kb_ = file_size_bytes / 1024;
1013
1014   if (file_size_uma_reported_)
1015     return;
1016
1017   pp::UMAPrivate uma_interface(this);
1018   uma_interface.HistogramCustomCounts(
1019       "Media.EME.CdmFileIO.FileSizeKBOnFirstRead",
1020       last_read_file_size_kb_,
1021       kSizeKBMin,
1022       kSizeKBMax,
1023       kSizeKBBuckets);
1024   file_size_uma_reported_ = true;
1025 }
1026
1027 #if !defined(NDEBUG)
1028 void CdmAdapter::LogToConsole(const pp::Var& value) {
1029   PP_DCHECK(IsMainThread());
1030   const PPB_Console* console = reinterpret_cast<const PPB_Console*>(
1031       pp::Module::Get()->GetBrowserInterface(PPB_CONSOLE_INTERFACE));
1032   console->Log(pp_instance(), PP_LOGLEVEL_LOG, value.pp_var());
1033 }
1034 #endif  // !defined(NDEBUG)
1035
1036 void CdmAdapter::SendPlatformChallenge(
1037     const char* service_id, uint32_t service_id_length,
1038     const char* challenge, uint32_t challenge_length) {
1039 #if defined(OS_CHROMEOS)
1040   pp::VarArrayBuffer challenge_var(challenge_length);
1041   uint8_t* var_data = static_cast<uint8_t*>(challenge_var.Map());
1042   memcpy(var_data, challenge, challenge_length);
1043
1044   std::string service_id_str(service_id, service_id_length);
1045
1046   linked_ptr<PepperPlatformChallengeResponse> response(
1047       new PepperPlatformChallengeResponse());
1048
1049   int32_t result = platform_verification_.ChallengePlatform(
1050       pp::Var(service_id_str),
1051       challenge_var,
1052       &response->signed_data,
1053       &response->signed_data_signature,
1054       &response->platform_key_certificate,
1055       callback_factory_.NewCallback(&CdmAdapter::SendPlatformChallengeDone,
1056                                     response));
1057   challenge_var.Unmap();
1058   if (result == PP_OK_COMPLETIONPENDING)
1059     return;
1060
1061   // Fall through on error and issue an empty OnPlatformChallengeResponse().
1062   PP_DCHECK(result != PP_OK);
1063 #endif
1064
1065   cdm::PlatformChallengeResponse platform_challenge_response = {};
1066   cdm_->OnPlatformChallengeResponse(platform_challenge_response);
1067 }
1068
1069 void CdmAdapter::EnableOutputProtection(uint32_t desired_protection_mask) {
1070 #if defined(OS_CHROMEOS)
1071   int32_t result = output_protection_.EnableProtection(
1072       desired_protection_mask, callback_factory_.NewCallback(
1073           &CdmAdapter::EnableProtectionDone));
1074
1075   // Errors are ignored since clients must call QueryOutputProtectionStatus() to
1076   // inspect the protection status on a regular basis.
1077
1078   if (result != PP_OK && result != PP_OK_COMPLETIONPENDING)
1079     CDM_DLOG() << __FUNCTION__ << " failed!";
1080 #endif
1081 }
1082
1083 void CdmAdapter::QueryOutputProtectionStatus() {
1084 #if defined(OS_CHROMEOS)
1085   PP_DCHECK(!query_output_protection_in_progress_);
1086
1087   output_link_mask_ = output_protection_mask_ = 0;
1088   const int32_t result = output_protection_.QueryStatus(
1089       &output_link_mask_,
1090       &output_protection_mask_,
1091       callback_factory_.NewCallback(
1092           &CdmAdapter::QueryOutputProtectionStatusDone));
1093   if (result == PP_OK_COMPLETIONPENDING) {
1094     query_output_protection_in_progress_ = true;
1095     ReportOutputProtectionQuery();
1096     return;
1097   }
1098
1099   // Fall through on error and issue an empty OnQueryOutputProtectionStatus().
1100   PP_DCHECK(result != PP_OK);
1101 #endif
1102
1103   cdm_->OnQueryOutputProtectionStatus(0, 0);
1104 }
1105
1106 void CdmAdapter::OnDeferredInitializationDone(cdm::StreamType stream_type,
1107                                               cdm::Status decoder_status) {
1108   switch (stream_type) {
1109     case cdm::kStreamTypeAudio:
1110       PP_DCHECK(deferred_initialize_audio_decoder_);
1111       CallOnMain(
1112           callback_factory_.NewCallback(&CdmAdapter::DecoderInitializeDone,
1113                                         PP_DECRYPTORSTREAMTYPE_AUDIO,
1114                                         deferred_audio_decoder_config_id_,
1115                                         decoder_status == cdm::kSuccess));
1116       deferred_initialize_audio_decoder_ = false;
1117       deferred_audio_decoder_config_id_ = 0;
1118       break;
1119     case cdm::kStreamTypeVideo:
1120       PP_DCHECK(deferred_initialize_video_decoder_);
1121       CallOnMain(
1122           callback_factory_.NewCallback(&CdmAdapter::DecoderInitializeDone,
1123                                         PP_DECRYPTORSTREAMTYPE_VIDEO,
1124                                         deferred_video_decoder_config_id_,
1125                                         decoder_status == cdm::kSuccess));
1126       deferred_initialize_video_decoder_ = false;
1127       deferred_video_decoder_config_id_ = 0;
1128       break;
1129   }
1130 }
1131
1132 // The CDM owns the returned object and must call FileIO::Close() to release it.
1133 cdm::FileIO* CdmAdapter::CreateFileIO(cdm::FileIOClient* client) {
1134   return new CdmFileIOImpl(
1135       client,
1136       pp_instance(),
1137       callback_factory_.NewCallback(&CdmAdapter::OnFirstFileRead));
1138 }
1139
1140 #if defined(OS_CHROMEOS)
1141 void CdmAdapter::ReportOutputProtectionUMA(OutputProtectionStatus status) {
1142   pp::UMAPrivate uma_interface(this);
1143   uma_interface.HistogramEnumeration(
1144       "Media.EME.OutputProtection", status, OUTPUT_PROTECTION_MAX);
1145 }
1146
1147 void CdmAdapter::ReportOutputProtectionQuery() {
1148   if (uma_for_output_protection_query_reported_)
1149     return;
1150
1151   ReportOutputProtectionUMA(OUTPUT_PROTECTION_QUERIED);
1152   uma_for_output_protection_query_reported_ = true;
1153 }
1154
1155 void CdmAdapter::ReportOutputProtectionQueryResult() {
1156   if (uma_for_output_protection_positive_result_reported_)
1157     return;
1158
1159   // Report UMAs for output protection query result.
1160   uint32_t external_links = (output_link_mask_ & ~cdm::kLinkTypeInternal);
1161
1162   if (!external_links) {
1163     ReportOutputProtectionUMA(OUTPUT_PROTECTION_NO_EXTERNAL_LINK);
1164     uma_for_output_protection_positive_result_reported_ = true;
1165     return;
1166   }
1167
1168   const uint32_t kProtectableLinks =
1169       cdm::kLinkTypeHDMI | cdm::kLinkTypeDVI | cdm::kLinkTypeDisplayPort;
1170   bool is_unprotectable_link_connected = external_links & ~kProtectableLinks;
1171   bool is_hdcp_enabled_on_all_protectable_links =
1172       output_protection_mask_ & cdm::kProtectionHDCP;
1173
1174   if (!is_unprotectable_link_connected &&
1175       is_hdcp_enabled_on_all_protectable_links) {
1176     ReportOutputProtectionUMA(
1177         OUTPUT_PROTECTION_ALL_EXTERNAL_LINKS_PROTECTED);
1178     uma_for_output_protection_positive_result_reported_ = true;
1179     return;
1180   }
1181
1182   // Do not report a negative result because it could be a false negative.
1183   // Instead, we will calculate number of negatives using the total number of
1184   // queries and success results.
1185 }
1186
1187 void CdmAdapter::SendPlatformChallengeDone(
1188     int32_t result,
1189     const linked_ptr<PepperPlatformChallengeResponse>& response) {
1190   if (result != PP_OK) {
1191     CDM_DLOG() << __FUNCTION__ << ": Platform challenge failed!";
1192     cdm::PlatformChallengeResponse platform_challenge_response = {};
1193     cdm_->OnPlatformChallengeResponse(platform_challenge_response);
1194     return;
1195   }
1196
1197   pp::VarArrayBuffer signed_data_var(response->signed_data);
1198   pp::VarArrayBuffer signed_data_signature_var(response->signed_data_signature);
1199   std::string platform_key_certificate_string =
1200       response->platform_key_certificate.AsString();
1201
1202   cdm::PlatformChallengeResponse platform_challenge_response = {
1203       static_cast<uint8_t*>(signed_data_var.Map()),
1204       signed_data_var.ByteLength(),
1205       static_cast<uint8_t*>(signed_data_signature_var.Map()),
1206       signed_data_signature_var.ByteLength(),
1207       reinterpret_cast<const uint8_t*>(platform_key_certificate_string.data()),
1208       static_cast<uint32_t>(platform_key_certificate_string.length())};
1209   cdm_->OnPlatformChallengeResponse(platform_challenge_response);
1210
1211   signed_data_var.Unmap();
1212   signed_data_signature_var.Unmap();
1213 }
1214
1215 void CdmAdapter::EnableProtectionDone(int32_t result) {
1216   // Does nothing since clients must call QueryOutputProtectionStatus() to
1217   // inspect the protection status on a regular basis.
1218   CDM_DLOG() << __FUNCTION__ << " : " << result;
1219 }
1220
1221 void CdmAdapter::QueryOutputProtectionStatusDone(int32_t result) {
1222   PP_DCHECK(query_output_protection_in_progress_);
1223   query_output_protection_in_progress_ = false;
1224
1225   // Return a protection status of none on error.
1226   if (result != PP_OK)
1227     output_link_mask_ = output_protection_mask_ = 0;
1228   else
1229     ReportOutputProtectionQueryResult();
1230
1231   cdm_->OnQueryOutputProtectionStatus(output_link_mask_,
1232                                       output_protection_mask_);
1233 }
1234 #endif
1235
1236 CdmAdapter::SessionError::SessionError(cdm::Error error,
1237                                        uint32_t system_code,
1238                                        std::string error_description)
1239     : error(error),
1240       system_code(system_code),
1241       error_description(error_description) {
1242 }
1243
1244 void* GetCdmHost(int host_interface_version, void* user_data) {
1245   if (!host_interface_version || !user_data)
1246     return NULL;
1247
1248   COMPILE_ASSERT(
1249       cdm::ContentDecryptionModule::Host::kVersion == cdm::Host_6::kVersion,
1250       update_code_below);
1251
1252   // Ensure IsSupportedCdmHostVersion matches implementation of this function.
1253   // Always update this DCHECK when updating this function.
1254   // If this check fails, update this function and DCHECK or update
1255   // IsSupportedCdmHostVersion.
1256
1257   PP_DCHECK(
1258       // Future version is not supported.
1259       !IsSupportedCdmHostVersion(cdm::Host_6::kVersion + 1) &&
1260       // Current version is supported.
1261       IsSupportedCdmHostVersion(cdm::Host_6::kVersion) &&
1262       // Include all previous supported versions (if any) here.
1263       // One older than the oldest supported version is not supported.
1264       !IsSupportedCdmHostVersion(cdm::Host_6::kVersion - 1));
1265   PP_DCHECK(IsSupportedCdmHostVersion(host_interface_version));
1266
1267   CdmAdapter* cdm_adapter = static_cast<CdmAdapter*>(user_data);
1268   CDM_DLOG() << "Create CDM Host with version " << host_interface_version;
1269   switch (host_interface_version) {
1270     case cdm::Host_6::kVersion:
1271       return static_cast<cdm::Host_6*>(cdm_adapter);
1272     default:
1273       PP_NOTREACHED();
1274       return NULL;
1275   }
1276 }
1277
1278 // This object is the global object representing this plugin library as long
1279 // as it is loaded.
1280 class CdmAdapterModule : public pp::Module {
1281  public:
1282   CdmAdapterModule() : pp::Module() {
1283     // This function blocks the renderer thread (PluginInstance::Initialize()).
1284     // Move this call to other places if this may be a concern in the future.
1285     INITIALIZE_CDM_MODULE();
1286   }
1287   virtual ~CdmAdapterModule() {
1288     DeinitializeCdmModule();
1289   }
1290
1291   virtual pp::Instance* CreateInstance(PP_Instance instance) {
1292     return new CdmAdapter(instance, this);
1293   }
1294
1295  private:
1296   CdmFileIOImpl::ResourceTracker cdm_file_io_impl_resource_tracker;
1297 };
1298
1299 }  // namespace media
1300
1301 namespace pp {
1302
1303 // Factory function for your specialization of the Module object.
1304 Module* CreateModule() {
1305   return new media::CdmAdapterModule();
1306 }
1307
1308 }  // namespace pp