src/content/renderer/media/android/media_source_delegate.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 "content/renderer/media/android/media_source_delegate.h"
   6
   7 #include <limits>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/message_loop/message_loop_proxy.h"
  12 #include "base/strings/string_number_conversions.h"
  13 #include "content/renderer/media/android/renderer_demuxer_android.h"
  14 #include "content/renderer/media/webmediaplayer_util.h"
  15 #include "content/renderer/media/webmediasource_impl.h"
  16 #include "media/base/android/demuxer_stream_player_params.h"
  17 #include "media/base/bind_to_current_loop.h"
  18 #include "media/base/demuxer_stream.h"
  19 #include "media/base/media_log.h"
  20 #include "media/filters/chunk_demuxer.h"
  21 #include "media/filters/decrypting_demuxer_stream.h"
  22 #include "third_party/WebKit/public/platform/WebString.h"
  23 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
  24
  25 using media::DemuxerStream;
  26 using media::DemuxerConfigs;
  27 using media::DemuxerData;
  28 using blink::WebMediaPlayer;
  29 using blink::WebString;
  30
  31 namespace {
  32
  33 // The size of the access unit to transfer in an IPC in case of MediaSource.
  34 // 4: approximately 64ms of content in 60 fps movies.
  35 const size_t kAccessUnitSizeForMediaSource = 4;
  36
  37 const uint8 kVorbisPadding[] = { 0xff, 0xff, 0xff, 0xff };
  38
  39 }  // namespace
  40
  41 namespace content {
  42
  43 static void LogMediaSourceError(const scoped_refptr<media::MediaLog>& media_log,
  44                                 const std::string& error) {
  45   media_log->AddEvent(media_log->CreateMediaSourceErrorEvent(error));
  46 }
  47
  48 MediaSourceDelegate::MediaSourceDelegate(
  49     RendererDemuxerAndroid* demuxer_client,
  50     int demuxer_client_id,
  51     const scoped_refptr<base::MessageLoopProxy>& media_loop,
  52     media::MediaLog* media_log)
  53     : demuxer_client_(demuxer_client),
  54       demuxer_client_id_(demuxer_client_id),
  55       media_log_(media_log),
  56       is_demuxer_ready_(false),
  57       audio_stream_(NULL),
  58       video_stream_(NULL),
  59       seeking_(false),
  60       is_video_encrypted_(false),
  61       doing_browser_seek_(false),
  62       browser_seek_time_(media::kNoTimestamp()),
  63       expecting_regular_seek_(false),
  64       access_unit_size_(0),
  65       main_loop_(base::MessageLoopProxy::current()),
  66       media_loop_(media_loop),
  67       main_weak_factory_(this),
  68       media_weak_factory_(this),
  69       main_weak_this_(main_weak_factory_.GetWeakPtr()) {
  70   DCHECK(main_loop_->BelongsToCurrentThread());
  71 }
  72
  73 MediaSourceDelegate::~MediaSourceDelegate() {
  74   DCHECK(main_loop_->BelongsToCurrentThread());
  75   DVLOG(1) << __FUNCTION__ << " : " << demuxer_client_id_;
  76   DCHECK(!chunk_demuxer_);
  77   DCHECK(!demuxer_client_);
  78   DCHECK(!audio_decrypting_demuxer_stream_);
  79   DCHECK(!video_decrypting_demuxer_stream_);
  80   DCHECK(!audio_stream_);
  81   DCHECK(!video_stream_);
  82 }
  83
  84 void MediaSourceDelegate::Destroy() {
  85   DCHECK(main_loop_->BelongsToCurrentThread());
  86   DVLOG(1) << __FUNCTION__ << " : " << demuxer_client_id_;
  87
  88   if (!chunk_demuxer_) {
  89     DCHECK(!demuxer_client_);
  90     delete this;
  91     return;
  92   }
  93
  94   duration_change_cb_.Reset();
  95   update_network_state_cb_.Reset();
  96   media_source_opened_cb_.Reset();
  97
  98   main_weak_factory_.InvalidateWeakPtrs();
  99   DCHECK(!main_weak_factory_.HasWeakPtrs());
 100
 101   chunk_demuxer_->Shutdown();
 102
 103   // |this| will be transferred to the callback StopDemuxer() and
 104   // OnDemuxerStopDone(). They own |this| and OnDemuxerStopDone() will delete
 105   // it when called, hence using base::Unretained(this) is safe here.
 106   media_loop_->PostTask(FROM_HERE,
 107                         base::Bind(&MediaSourceDelegate::StopDemuxer,
 108                         base::Unretained(this)));
 109 }
 110
 111 bool MediaSourceDelegate::IsVideoEncrypted() {
 112   DCHECK(main_loop_->BelongsToCurrentThread());
 113   base::AutoLock auto_lock(is_video_encrypted_lock_);
 114   return is_video_encrypted_;
 115 }
 116
 117 void MediaSourceDelegate::StopDemuxer() {
 118   DCHECK(media_loop_->BelongsToCurrentThread());
 119   DCHECK(chunk_demuxer_);
 120
 121   demuxer_client_->RemoveDelegate(demuxer_client_id_);
 122   demuxer_client_ = NULL;
 123
 124   audio_stream_ = NULL;
 125   video_stream_ = NULL;
 126   // TODO(xhwang): Figure out if we need to Reset the DDSs after Seeking or
 127   // before destroying them.
 128   audio_decrypting_demuxer_stream_.reset();
 129   video_decrypting_demuxer_stream_.reset();
 130
 131   media_weak_factory_.InvalidateWeakPtrs();
 132   DCHECK(!media_weak_factory_.HasWeakPtrs());
 133
 134   // The callback OnDemuxerStopDone() owns |this| and will delete it when
 135   // called. Hence using base::Unretained(this) is safe here.
 136   chunk_demuxer_->Stop(base::Bind(&MediaSourceDelegate::OnDemuxerStopDone,
 137                                   base::Unretained(this)));
 138 }
 139
 140 void MediaSourceDelegate::InitializeMediaSource(
 141     const MediaSourceOpenedCB& media_source_opened_cb,
 142     const media::Demuxer::NeedKeyCB& need_key_cb,
 143     const media::SetDecryptorReadyCB& set_decryptor_ready_cb,
 144     const UpdateNetworkStateCB& update_network_state_cb,
 145     const DurationChangeCB& duration_change_cb) {
 146   DCHECK(main_loop_->BelongsToCurrentThread());
 147   DCHECK(!media_source_opened_cb.is_null());
 148   media_source_opened_cb_ = media_source_opened_cb;
 149   need_key_cb_ = need_key_cb;
 150   set_decryptor_ready_cb_ = set_decryptor_ready_cb;
 151   update_network_state_cb_ = media::BindToCurrentLoop(update_network_state_cb);
 152   duration_change_cb_ = duration_change_cb;
 153   access_unit_size_ = kAccessUnitSizeForMediaSource;
 154
 155   chunk_demuxer_.reset(new media::ChunkDemuxer(
 156       media::BindToCurrentLoop(
 157           base::Bind(&MediaSourceDelegate::OnDemuxerOpened, main_weak_this_)),
 158       media::BindToCurrentLoop(
 159           base::Bind(&MediaSourceDelegate::OnNeedKey, main_weak_this_)),
 160       base::Bind(&LogMediaSourceError, media_log_),
 161       false));
 162
 163   // |this| will be retained until StopDemuxer() is posted, so Unretained() is
 164   // safe here.
 165   media_loop_->PostTask(FROM_HERE,
 166                         base::Bind(&MediaSourceDelegate::InitializeDemuxer,
 167                         base::Unretained(this)));
 168 }
 169
 170 void MediaSourceDelegate::InitializeDemuxer() {
 171   DCHECK(media_loop_->BelongsToCurrentThread());
 172   demuxer_client_->AddDelegate(demuxer_client_id_, this);
 173   chunk_demuxer_->Initialize(this,
 174                              base::Bind(&MediaSourceDelegate::OnDemuxerInitDone,
 175                                         media_weak_factory_.GetWeakPtr()),
 176                              false);
 177 }
 178
 179 const blink::WebTimeRanges& MediaSourceDelegate::Buffered() {
 180   buffered_web_time_ranges_ =
 181       ConvertToWebTimeRanges(buffered_time_ranges_);
 182   return buffered_web_time_ranges_;
 183 }
 184
 185 size_t MediaSourceDelegate::DecodedFrameCount() const {
 186   return statistics_.video_frames_decoded;
 187 }
 188
 189 size_t MediaSourceDelegate::DroppedFrameCount() const {
 190   return statistics_.video_frames_dropped;
 191 }
 192
 193 size_t MediaSourceDelegate::AudioDecodedByteCount() const {
 194   return statistics_.audio_bytes_decoded;
 195 }
 196
 197 size_t MediaSourceDelegate::VideoDecodedByteCount() const {
 198   return statistics_.video_bytes_decoded;
 199 }
 200
 201 void MediaSourceDelegate::CancelPendingSeek(const base::TimeDelta& seek_time) {
 202   DCHECK(main_loop_->BelongsToCurrentThread());
 203   DVLOG(1) << __FUNCTION__ << "(" << seek_time.InSecondsF() << ") : "
 204            << demuxer_client_id_;
 205
 206   if (!chunk_demuxer_)
 207     return;
 208
 209   {
 210     // Remember to trivially finish any newly arriving browser seek requests
 211     // that may arrive prior to the next regular seek request.
 212     base::AutoLock auto_lock(seeking_lock_);
 213     expecting_regular_seek_ = true;
 214   }
 215
 216   // Cancel any previously expected or in-progress regular or browser seek.
 217   // It is possible that we have just finished the seek, but caller does
 218   // not know this yet. It is still safe to cancel in this case because the
 219   // caller will always call StartWaitingForSeek() when it is notified of
 220   // the finished seek.
 221   chunk_demuxer_->CancelPendingSeek(seek_time);
 222 }
 223
 224 void MediaSourceDelegate::StartWaitingForSeek(
 225     const base::TimeDelta& seek_time) {
 226   DCHECK(main_loop_->BelongsToCurrentThread());
 227   DVLOG(1) << __FUNCTION__ << "(" << seek_time.InSecondsF() << ") : "
 228            << demuxer_client_id_;
 229
 230   if (!chunk_demuxer_)
 231     return;
 232
 233   bool cancel_browser_seek = false;
 234   {
 235     // Remember to trivially finish any newly arriving browser seek requests
 236     // that may arrive prior to the next regular seek request.
 237     base::AutoLock auto_lock(seeking_lock_);
 238     expecting_regular_seek_ = true;
 239
 240     // Remember to cancel any in-progress browser seek.
 241     if (seeking_) {
 242       DCHECK(doing_browser_seek_);
 243       cancel_browser_seek = true;
 244     }
 245   }
 246
 247   if (cancel_browser_seek)
 248     chunk_demuxer_->CancelPendingSeek(seek_time);
 249   chunk_demuxer_->StartWaitingForSeek(seek_time);
 250 }
 251
 252 void MediaSourceDelegate::Seek(
 253     const base::TimeDelta& seek_time, bool is_browser_seek) {
 254   DCHECK(media_loop_->BelongsToCurrentThread());
 255   DVLOG(1) << __FUNCTION__ << "(" << seek_time.InSecondsF() << ", "
 256            << (is_browser_seek ? "browser seek" : "regular seek") << ") : "
 257            << demuxer_client_id_;
 258
 259   base::TimeDelta internal_seek_time = seek_time;
 260   {
 261     base::AutoLock auto_lock(seeking_lock_);
 262     DCHECK(!seeking_);
 263     seeking_ = true;
 264     doing_browser_seek_ = is_browser_seek;
 265
 266     if (doing_browser_seek_ && (!chunk_demuxer_ || expecting_regular_seek_)) {
 267       // Trivially finish the browser seek without actually doing it. Reads will
 268       // continue to be |kAborted| until the next regular seek is done. Browser
 269       // seeking is not supported unless using a ChunkDemuxer; browser seeks are
 270       // trivially finished if |chunk_demuxer_| is NULL.
 271       seeking_ = false;
 272       doing_browser_seek_ = false;
 273       demuxer_client_->DemuxerSeekDone(demuxer_client_id_, seek_time);
 274       return;
 275     }
 276
 277     if (doing_browser_seek_) {
 278       internal_seek_time = FindBufferedBrowserSeekTime_Locked(seek_time);
 279       browser_seek_time_ = internal_seek_time;
 280     } else {
 281       expecting_regular_seek_ = false;
 282       browser_seek_time_ = media::kNoTimestamp();
 283     }
 284   }
 285
 286   // Prepare |chunk_demuxer_| for browser seek.
 287   if (is_browser_seek) {
 288     chunk_demuxer_->CancelPendingSeek(internal_seek_time);
 289     chunk_demuxer_->StartWaitingForSeek(internal_seek_time);
 290   }
 291
 292   SeekInternal(internal_seek_time);
 293 }
 294
 295 void MediaSourceDelegate::SeekInternal(const base::TimeDelta& seek_time) {
 296   DCHECK(media_loop_->BelongsToCurrentThread());
 297   DCHECK(IsSeeking());
 298   chunk_demuxer_->Seek(seek_time, base::Bind(
 299       &MediaSourceDelegate::OnDemuxerSeekDone,
 300       media_weak_factory_.GetWeakPtr()));
 301 }
 302
 303 void MediaSourceDelegate::SetTotalBytes(int64 total_bytes) {
 304   NOTIMPLEMENTED();
 305 }
 306
 307 void MediaSourceDelegate::AddBufferedByteRange(int64 start, int64 end) {
 308   NOTIMPLEMENTED();
 309 }
 310
 311 void MediaSourceDelegate::AddBufferedTimeRange(base::TimeDelta start,
 312                                                base::TimeDelta end) {
 313   buffered_time_ranges_.Add(start, end);
 314 }
 315
 316 void MediaSourceDelegate::SetDuration(base::TimeDelta duration) {
 317   DCHECK(main_loop_->BelongsToCurrentThread());
 318   DVLOG(1) << __FUNCTION__ << "(" << duration.InSecondsF() << ") : "
 319            << demuxer_client_id_;
 320
 321   // Force duration change notification to be async to avoid reentrancy into
 322   // ChunkDemxuer.
 323   main_loop_->PostTask(FROM_HERE, base::Bind(
 324       &MediaSourceDelegate::OnDurationChanged, main_weak_this_, duration));
 325 }
 326
 327 void MediaSourceDelegate::OnDurationChanged(const base::TimeDelta& duration) {
 328   DCHECK(main_loop_->BelongsToCurrentThread());
 329   if (demuxer_client_)
 330     demuxer_client_->DurationChanged(demuxer_client_id_, duration);
 331   if (!duration_change_cb_.is_null())
 332     duration_change_cb_.Run(duration);
 333 }
 334
 335 void MediaSourceDelegate::OnReadFromDemuxer(media::DemuxerStream::Type type) {
 336   DCHECK(media_loop_->BelongsToCurrentThread());
 337   DVLOG(1) << __FUNCTION__ << "(" << type << ") : " << demuxer_client_id_;
 338   if (IsSeeking())
 339     return;  // Drop the request during seeking.
 340
 341   DCHECK(type == DemuxerStream::AUDIO || type == DemuxerStream::VIDEO);
 342   // The access unit size should have been initialized properly at this stage.
 343   DCHECK_GT(access_unit_size_, 0u);
 344   scoped_ptr<DemuxerData> data(new DemuxerData());
 345   data->type = type;
 346   data->access_units.resize(access_unit_size_);
 347   ReadFromDemuxerStream(type, data.Pass(), 0);
 348 }
 349
 350 void MediaSourceDelegate::ReadFromDemuxerStream(media::DemuxerStream::Type type,
 351                                                 scoped_ptr<DemuxerData> data,
 352                                                 size_t index) {
 353   DCHECK(media_loop_->BelongsToCurrentThread());
 354   // DemuxerStream::Read() always returns the read callback asynchronously.
 355   DemuxerStream* stream =
 356       (type == DemuxerStream::AUDIO) ? audio_stream_ : video_stream_;
 357   stream->Read(base::Bind(
 358       &MediaSourceDelegate::OnBufferReady,
 359       media_weak_factory_.GetWeakPtr(), type, base::Passed(&data), index));
 360 }
 361
 362 void MediaSourceDelegate::OnBufferReady(
 363     media::DemuxerStream::Type type,
 364     scoped_ptr<DemuxerData> data,
 365     size_t index,
 366     DemuxerStream::Status status,
 367     const scoped_refptr<media::DecoderBuffer>& buffer) {
 368   DCHECK(media_loop_->BelongsToCurrentThread());
 369   DVLOG(1) << __FUNCTION__ << "(" << index << ", " << status << ", "
 370            << ((!buffer || buffer->end_of_stream()) ?
 371                -1 : buffer->timestamp().InMilliseconds())
 372            << ") : " << demuxer_client_id_;
 373   DCHECK(chunk_demuxer_);
 374
 375   // No new OnReadFromDemuxer() will be called during seeking. So this callback
 376   // must be from previous OnReadFromDemuxer() call and should be ignored.
 377   if (IsSeeking()) {
 378     DVLOG(1) << __FUNCTION__ << ": Ignore previous read during seeking.";
 379     return;
 380   }
 381
 382   bool is_audio = (type == DemuxerStream::AUDIO);
 383   if (status != DemuxerStream::kAborted &&
 384       index >= data->access_units.size()) {
 385     LOG(ERROR) << "The internal state inconsistency onBufferReady: "
 386                << (is_audio ? "Audio" : "Video") << ", index " << index
 387                << ", size " << data->access_units.size()
 388                << ", status " << static_cast<int>(status);
 389     NOTREACHED();
 390     return;
 391   }
 392
 393   switch (status) {
 394     case DemuxerStream::kAborted:
 395       DVLOG(1) << __FUNCTION__ << " : Aborted";
 396       data->access_units[index].status = status;
 397       data->access_units.resize(index + 1);
 398       break;
 399
 400     case DemuxerStream::kConfigChanged:
 401       // In case of kConfigChanged, need to read decoder_config once
 402       // for the next reads.
 403       // TODO(kjyoun): Investigate if we need to use this new config. See
 404       // http://crbug.com/255783
 405       if (is_audio) {
 406         audio_stream_->audio_decoder_config();
 407       } else {
 408         gfx::Size size = video_stream_->video_decoder_config().coded_size();
 409         DVLOG(1) << "Video config is changed: " << size.width() << "x"
 410                  << size.height();
 411       }
 412       data->access_units[index].status = status;
 413       data->access_units.resize(index + 1);
 414       break;
 415
 416     case DemuxerStream::kOk:
 417       data->access_units[index].status = status;
 418       if (buffer->end_of_stream()) {
 419         data->access_units[index].end_of_stream = true;
 420         data->access_units.resize(index + 1);
 421         break;
 422       }
 423       // TODO(ycheo): We assume that the inputed stream will be decoded
 424       // right away.
 425       // Need to implement this properly using MediaPlayer.OnInfoListener.
 426       if (is_audio) {
 427         statistics_.audio_bytes_decoded += buffer->data_size();
 428       } else {
 429         statistics_.video_bytes_decoded += buffer->data_size();
 430         statistics_.video_frames_decoded++;
 431       }
 432       data->access_units[index].timestamp = buffer->timestamp();
 433
 434       data->access_units[index].data.assign(
 435           buffer->data(), buffer->data() + buffer->data_size());
 436       // Vorbis needs 4 extra bytes padding on Android. Check
 437       // NuMediaExtractor.cpp in Android source code.
 438       if (is_audio && media::kCodecVorbis ==
 439           audio_stream_->audio_decoder_config().codec()) {
 440         data->access_units[index].data.insert(
 441             data->access_units[index].data.end(), kVorbisPadding,
 442             kVorbisPadding + 4);
 443       }
 444       if (buffer->decrypt_config()) {
 445         data->access_units[index].key_id = std::vector<char>(
 446             buffer->decrypt_config()->key_id().begin(),
 447             buffer->decrypt_config()->key_id().end());
 448         data->access_units[index].iv = std::vector<char>(
 449             buffer->decrypt_config()->iv().begin(),
 450             buffer->decrypt_config()->iv().end());
 451         data->access_units[index].subsamples =
 452             buffer->decrypt_config()->subsamples();
 453       }
 454       if (++index < data->access_units.size()) {
 455         ReadFromDemuxerStream(type, data.Pass(), index);
 456         return;
 457       }
 458       break;
 459
 460     default:
 461       NOTREACHED();
 462   }
 463
 464   if (!IsSeeking() && demuxer_client_)
 465     demuxer_client_->ReadFromDemuxerAck(demuxer_client_id_, *data);
 466 }
 467
 468 void MediaSourceDelegate::OnDemuxerError(media::PipelineStatus status) {
 469   DVLOG(1) << __FUNCTION__ << "(" << status << ") : " << demuxer_client_id_;
 470   // |update_network_state_cb_| is bound to the main thread.
 471   if (status != media::PIPELINE_OK && !update_network_state_cb_.is_null())
 472     update_network_state_cb_.Run(PipelineErrorToNetworkState(status));
 473 }
 474
 475 void MediaSourceDelegate::AddTextStream(
 476     media::DemuxerStream* /* text_stream */ ,
 477     const media::TextTrackConfig& /* config */ ) {
 478   // TODO(matthewjheaney): add text stream (http://crbug/322115).
 479   NOTIMPLEMENTED();
 480 }
 481
 482 void MediaSourceDelegate::RemoveTextStream(
 483     media::DemuxerStream* /* text_stream */ ) {
 484   // TODO(matthewjheaney): remove text stream (http://crbug/322115).
 485   NOTIMPLEMENTED();
 486 }
 487
 488 void MediaSourceDelegate::OnDemuxerInitDone(media::PipelineStatus status) {
 489   DCHECK(media_loop_->BelongsToCurrentThread());
 490   DVLOG(1) << __FUNCTION__ << "(" << status << ") : " << demuxer_client_id_;
 491   DCHECK(chunk_demuxer_);
 492
 493   if (status != media::PIPELINE_OK) {
 494     OnDemuxerError(status);
 495     return;
 496   }
 497
 498   audio_stream_ = chunk_demuxer_->GetStream(DemuxerStream::AUDIO);
 499   video_stream_ = chunk_demuxer_->GetStream(DemuxerStream::VIDEO);
 500
 501   if (audio_stream_ && audio_stream_->audio_decoder_config().is_encrypted() &&
 502       !set_decryptor_ready_cb_.is_null()) {
 503     InitAudioDecryptingDemuxerStream();
 504     // InitVideoDecryptingDemuxerStream() will be called in
 505     // OnAudioDecryptingDemuxerStreamInitDone().
 506     return;
 507   }
 508
 509   if (video_stream_ && video_stream_->video_decoder_config().is_encrypted() &&
 510       !set_decryptor_ready_cb_.is_null()) {
 511     InitVideoDecryptingDemuxerStream();
 512     return;
 513   }
 514
 515   // Notify demuxer ready when both streams are not encrypted.
 516   is_demuxer_ready_ = true;
 517   if (CanNotifyDemuxerReady())
 518     NotifyDemuxerReady();
 519 }
 520
 521 void MediaSourceDelegate::InitAudioDecryptingDemuxerStream() {
 522   DCHECK(media_loop_->BelongsToCurrentThread());
 523   DVLOG(1) << __FUNCTION__ << " : " << demuxer_client_id_;
 524   DCHECK(!set_decryptor_ready_cb_.is_null());
 525
 526   audio_decrypting_demuxer_stream_.reset(new media::DecryptingDemuxerStream(
 527       media_loop_, set_decryptor_ready_cb_));
 528   audio_decrypting_demuxer_stream_->Initialize(
 529       audio_stream_,
 530       base::Bind(&MediaSourceDelegate::OnAudioDecryptingDemuxerStreamInitDone,
 531                  media_weak_factory_.GetWeakPtr()));
 532 }
 533
 534 void MediaSourceDelegate::InitVideoDecryptingDemuxerStream() {
 535   DCHECK(media_loop_->BelongsToCurrentThread());
 536   DVLOG(1) << __FUNCTION__ << " : " << demuxer_client_id_;
 537   DCHECK(!set_decryptor_ready_cb_.is_null());
 538
 539   video_decrypting_demuxer_stream_.reset(new media::DecryptingDemuxerStream(
 540       media_loop_, set_decryptor_ready_cb_));
 541   video_decrypting_demuxer_stream_->Initialize(
 542       video_stream_,
 543       base::Bind(&MediaSourceDelegate::OnVideoDecryptingDemuxerStreamInitDone,
 544                  media_weak_factory_.GetWeakPtr()));
 545 }
 546
 547 void MediaSourceDelegate::OnAudioDecryptingDemuxerStreamInitDone(
 548     media::PipelineStatus status) {
 549   DCHECK(media_loop_->BelongsToCurrentThread());
 550   DVLOG(1) << __FUNCTION__ << "(" << status << ") : " << demuxer_client_id_;
 551   DCHECK(chunk_demuxer_);
 552
 553   if (status != media::PIPELINE_OK)
 554     audio_decrypting_demuxer_stream_.reset();
 555   else
 556     audio_stream_ = audio_decrypting_demuxer_stream_.get();
 557
 558   if (video_stream_ && video_stream_->video_decoder_config().is_encrypted()) {
 559     InitVideoDecryptingDemuxerStream();
 560     return;
 561   }
 562
 563   // Try to notify demuxer ready when audio DDS initialization finished and
 564   // video is not encrypted.
 565   is_demuxer_ready_ = true;
 566   if (CanNotifyDemuxerReady())
 567     NotifyDemuxerReady();
 568 }
 569
 570 void MediaSourceDelegate::OnVideoDecryptingDemuxerStreamInitDone(
 571     media::PipelineStatus status) {
 572   DCHECK(media_loop_->BelongsToCurrentThread());
 573   DVLOG(1) << __FUNCTION__ << "(" << status << ") : " << demuxer_client_id_;
 574   DCHECK(chunk_demuxer_);
 575
 576   if (status != media::PIPELINE_OK)
 577     video_decrypting_demuxer_stream_.reset();
 578   else
 579     video_stream_ = video_decrypting_demuxer_stream_.get();
 580
 581   // Try to notify demuxer ready when video DDS initialization finished.
 582   is_demuxer_ready_ = true;
 583   if (CanNotifyDemuxerReady())
 584     NotifyDemuxerReady();
 585 }
 586
 587 void MediaSourceDelegate::OnDemuxerSeekDone(media::PipelineStatus status) {
 588   DCHECK(media_loop_->BelongsToCurrentThread());
 589   DVLOG(1) << __FUNCTION__ << "(" << status << ") : " << demuxer_client_id_;
 590   DCHECK(IsSeeking());
 591
 592   if (status != media::PIPELINE_OK) {
 593     OnDemuxerError(status);
 594     return;
 595   }
 596
 597   ResetAudioDecryptingDemuxerStream();
 598 }
 599
 600 void MediaSourceDelegate::ResetAudioDecryptingDemuxerStream() {
 601   DCHECK(media_loop_->BelongsToCurrentThread());
 602   DVLOG(1) << __FUNCTION__ << " : " << demuxer_client_id_;
 603   if (audio_decrypting_demuxer_stream_) {
 604     audio_decrypting_demuxer_stream_->Reset(
 605         base::Bind(&MediaSourceDelegate::ResetVideoDecryptingDemuxerStream,
 606                    media_weak_factory_.GetWeakPtr()));
 607     return;
 608   }
 609
 610   ResetVideoDecryptingDemuxerStream();
 611 }
 612
 613 void MediaSourceDelegate::ResetVideoDecryptingDemuxerStream() {
 614   DCHECK(media_loop_->BelongsToCurrentThread());
 615   DVLOG(1) << __FUNCTION__ << " : " << demuxer_client_id_;
 616   if (video_decrypting_demuxer_stream_) {
 617     video_decrypting_demuxer_stream_->Reset(base::Bind(
 618         &MediaSourceDelegate::FinishResettingDecryptingDemuxerStreams,
 619         media_weak_factory_.GetWeakPtr()));
 620     return;
 621   }
 622
 623   FinishResettingDecryptingDemuxerStreams();
 624 }
 625
 626 void MediaSourceDelegate::FinishResettingDecryptingDemuxerStreams() {
 627   DCHECK(media_loop_->BelongsToCurrentThread());
 628   DVLOG(1) << __FUNCTION__ << " : " << demuxer_client_id_;
 629
 630   base::AutoLock auto_lock(seeking_lock_);
 631   DCHECK(seeking_);
 632   seeking_ = false;
 633   doing_browser_seek_ = false;
 634   demuxer_client_->DemuxerSeekDone(demuxer_client_id_, browser_seek_time_);
 635 }
 636
 637 void MediaSourceDelegate::OnDemuxerStopDone() {
 638   DCHECK(media_loop_->BelongsToCurrentThread());
 639   DVLOG(1) << __FUNCTION__ << " : " << demuxer_client_id_;
 640   main_loop_->PostTask(
 641       FROM_HERE,
 642       base::Bind(&MediaSourceDelegate::DeleteSelf, base::Unretained(this)));
 643 }
 644
 645 void MediaSourceDelegate::DeleteSelf() {
 646   DCHECK(main_loop_->BelongsToCurrentThread());
 647   DVLOG(1) << __FUNCTION__ << " : " << demuxer_client_id_;
 648   chunk_demuxer_.reset();
 649   delete this;
 650 }
 651
 652 void MediaSourceDelegate::OnMediaConfigRequest() {
 653   DCHECK(media_loop_->BelongsToCurrentThread());
 654   DVLOG(1) << __FUNCTION__ << " : " << demuxer_client_id_;
 655   if (CanNotifyDemuxerReady())
 656     NotifyDemuxerReady();
 657 }
 658
 659 bool MediaSourceDelegate::CanNotifyDemuxerReady() {
 660   DCHECK(media_loop_->BelongsToCurrentThread());
 661   return is_demuxer_ready_;
 662 }
 663
 664 void MediaSourceDelegate::NotifyDemuxerReady() {
 665   DCHECK(media_loop_->BelongsToCurrentThread());
 666   DVLOG(1) << __FUNCTION__ << " : " << demuxer_client_id_;
 667   DCHECK(CanNotifyDemuxerReady());
 668
 669   scoped_ptr<DemuxerConfigs> configs(new DemuxerConfigs());
 670   if (audio_stream_) {
 671     media::AudioDecoderConfig config = audio_stream_->audio_decoder_config();
 672     configs->audio_codec = config.codec();
 673     configs->audio_channels =
 674         media::ChannelLayoutToChannelCount(config.channel_layout());
 675     configs->audio_sampling_rate = config.samples_per_second();
 676     configs->is_audio_encrypted = config.is_encrypted();
 677     configs->audio_extra_data = std::vector<uint8>(
 678         config.extra_data(), config.extra_data() + config.extra_data_size());
 679   }
 680   if (video_stream_) {
 681     media::VideoDecoderConfig config = video_stream_->video_decoder_config();
 682     configs->video_codec = config.codec();
 683     configs->video_size = config.natural_size();
 684     configs->is_video_encrypted = config.is_encrypted();
 685     configs->video_extra_data = std::vector<uint8>(
 686         config.extra_data(), config.extra_data() + config.extra_data_size());
 687   }
 688   configs->duration_ms = GetDurationMs();
 689
 690   if (demuxer_client_)
 691     demuxer_client_->DemuxerReady(demuxer_client_id_, *configs);
 692
 693   base::AutoLock auto_lock(is_video_encrypted_lock_);
 694   is_video_encrypted_ = configs->is_video_encrypted;
 695 }
 696
 697 int MediaSourceDelegate::GetDurationMs() {
 698   DCHECK(media_loop_->BelongsToCurrentThread());
 699   if (!chunk_demuxer_)
 700     return -1;
 701
 702   double duration_ms = chunk_demuxer_->GetDuration() * 1000;
 703   if (duration_ms > std::numeric_limits<int32>::max()) {
 704     LOG(WARNING) << "Duration from ChunkDemuxer is too large; probably "
 705                     "something has gone wrong.";
 706     return std::numeric_limits<int32>::max();
 707   }
 708   return duration_ms;
 709 }
 710
 711 void MediaSourceDelegate::OnDemuxerOpened() {
 712   DCHECK(main_loop_->BelongsToCurrentThread());
 713   if (media_source_opened_cb_.is_null())
 714     return;
 715
 716   media_source_opened_cb_.Run(new WebMediaSourceImpl(
 717       chunk_demuxer_.get(), base::Bind(&LogMediaSourceError, media_log_)));
 718 }
 719
 720 void MediaSourceDelegate::OnNeedKey(const std::string& type,
 721                                     const std::vector<uint8>& init_data) {
 722   DCHECK(main_loop_->BelongsToCurrentThread());
 723   if (need_key_cb_.is_null())
 724     return;
 725
 726   need_key_cb_.Run(type, init_data);
 727 }
 728
 729 bool MediaSourceDelegate::IsSeeking() const {
 730   base::AutoLock auto_lock(seeking_lock_);
 731   return seeking_;
 732 }
 733
 734 base::TimeDelta MediaSourceDelegate::FindBufferedBrowserSeekTime_Locked(
 735     const base::TimeDelta& seek_time) const {
 736   seeking_lock_.AssertAcquired();
 737   DCHECK(seeking_);
 738   DCHECK(doing_browser_seek_);
 739   DCHECK(chunk_demuxer_) << "Browser seek requested, but no chunk demuxer";
 740
 741   media::Ranges<base::TimeDelta> buffered =
 742       chunk_demuxer_->GetBufferedRanges();
 743
 744   for (size_t i = 0; i < buffered.size(); ++i) {
 745     base::TimeDelta range_start = buffered.start(i);
 746     base::TimeDelta range_end = buffered.end(i);
 747     if (range_start <= seek_time) {
 748       if (range_end >= seek_time)
 749         return seek_time;
 750       continue;
 751     }
 752
 753     // If the start of the next buffered range after |seek_time| is too far
 754     // into the future, do not jump forward.
 755     if ((range_start - seek_time) > base::TimeDelta::FromMilliseconds(100))
 756       break;
 757
 758     // TODO(wolenetz): Remove possibility that this browser seek jumps
 759     // into future when the requested range is unbuffered but there is some
 760     // other buffered range after it. See http://crbug.com/304234.
 761     return range_start;
 762   }
 763
 764   // We found no range containing |seek_time| or beginning shortly after
 765   // |seek_time|. While possible that such data at and beyond the player's
 766   // current time have been garbage collected or removed by the web app, this is
 767   // unlikely. This may cause unexpected playback stall due to seek pending an
 768   // append for a GOP prior to the last GOP demuxed.
 769   // TODO(wolenetz): Remove the possibility for this seek to cause unexpected
 770   // player stall by replaying cached data since last keyframe in browser player
 771   // rather than issuing browser seek. See http://crbug.com/304234.
 772   return seek_time;
 773 }
 774
 775 }  // namespace content