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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "media/filters/renderer_impl.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/callback.h" | |
| 9 #include "base/callback_helpers.h" | |
| 10 #include "base/compiler_specific.h" | |
| 11 #include "base/location.h" | |
| 12 #include "base/single_thread_task_runner.h" | |
| 13 #include "media/base/audio_renderer.h" | |
| 14 #include "media/base/bind_to_current_loop.h" | |
| 15 #include "media/base/demuxer_stream_provider.h" | |
| 16 #include "media/base/time_source.h" | |
| 17 #include "media/base/video_renderer.h" | |
| 18 #include "media/base/wall_clock_time_source.h" | |
| 19 | |
| 20 namespace media { | |
| 21 | |
| 22 RendererImpl::RendererImpl( | |
| 23 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, | |
| 24 scoped_ptr<AudioRenderer> audio_renderer, | |
| 25 scoped_ptr<VideoRenderer> video_renderer) | |
| 26 : state_(STATE_UNINITIALIZED), | |
| 27 task_runner_(task_runner), | |
| 28 audio_renderer_(audio_renderer.Pass()), | |
| 29 video_renderer_(video_renderer.Pass()), | |
| 30 time_source_(NULL), | |
| 31 time_ticking_(false), | |
| 32 audio_buffering_state_(BUFFERING_HAVE_NOTHING), | |
| 33 video_buffering_state_(BUFFERING_HAVE_NOTHING), | |
| 34 audio_ended_(false), | |
| 35 video_ended_(false), | |
| 36 cdm_context_(nullptr), | |
| 37 underflow_disabled_for_testing_(false), | |
| 38 clockless_video_playback_enabled_for_testing_(false), | |
| 39 weak_factory_(this) { | |
| 40 weak_this_ = weak_factory_.GetWeakPtr(); | |
| 41 DVLOG(1) << __FUNCTION__; | |
| 42 } | |
| 43 | |
| 44 RendererImpl::~RendererImpl() { | |
| 45 DVLOG(1) << __FUNCTION__; | |
| 46 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 47 | |
| 48 // Tear down in opposite order of construction as |video_renderer_| can still | |
| 49 // need |time_source_| (which can be |audio_renderer_|) to be alive. | |
| 50 video_renderer_.reset(); | |
| 51 audio_renderer_.reset(); | |
| 52 | |
| 53 if (!init_cb_.is_null()) | |
| 54 base::ResetAndReturn(&init_cb_).Run(PIPELINE_ERROR_ABORT); | |
| 55 else if (!flush_cb_.is_null()) | |
| 56 base::ResetAndReturn(&flush_cb_).Run(); | |
| 57 } | |
| 58 | |
| 59 void RendererImpl::Initialize(DemuxerStreamProvider* demuxer_stream_provider, | |
| 60 const PipelineStatusCB& init_cb, | |
| 61 const StatisticsCB& statistics_cb, | |
| 62 const BufferingStateCB& buffering_state_cb, | |
| 63 const PaintCB& paint_cb, | |
| 64 const base::Closure& ended_cb, | |
| 65 const PipelineStatusCB& error_cb) { | |
| 66 DVLOG(1) << __FUNCTION__; | |
| 67 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 68 DCHECK_EQ(state_, STATE_UNINITIALIZED); | |
| 69 DCHECK(!init_cb.is_null()); | |
| 70 DCHECK(!statistics_cb.is_null()); | |
| 71 DCHECK(!buffering_state_cb.is_null()); | |
| 72 DCHECK(!paint_cb.is_null()); | |
| 73 DCHECK(!ended_cb.is_null()); | |
| 74 DCHECK(!error_cb.is_null()); | |
| 75 DCHECK(demuxer_stream_provider->GetStream(DemuxerStream::AUDIO) || | |
| 76 demuxer_stream_provider->GetStream(DemuxerStream::VIDEO)); | |
| 77 | |
| 78 demuxer_stream_provider_ = demuxer_stream_provider; | |
| 79 statistics_cb_ = statistics_cb; | |
| 80 buffering_state_cb_ = buffering_state_cb; | |
| 81 paint_cb_ = paint_cb; | |
| 82 ended_cb_ = ended_cb; | |
| 83 error_cb_ = error_cb; | |
| 84 init_cb_ = init_cb; | |
| 85 | |
| 86 state_ = STATE_INITIALIZING; | |
| 87 InitializeAudioRenderer(); | |
| 88 } | |
| 89 | |
| 90 void RendererImpl::SetCdm(CdmContext* cdm_context, | |
| 91 const CdmAttachedCB& cdm_attached_cb) { | |
| 92 DVLOG(1) << __FUNCTION__; | |
| 93 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 94 DCHECK(cdm_context); | |
| 95 | |
| 96 if (cdm_context_) { | |
| 97 DVLOG(1) << "Switching CDM not supported."; | |
| 98 cdm_attached_cb.Run(false); | |
| 99 return; | |
| 100 } | |
| 101 | |
| 102 cdm_context_ = cdm_context; | |
| 103 | |
| 104 if (decryptor_ready_cb_.is_null()) { | |
| 105 cdm_attached_cb.Run(true); | |
| 106 return; | |
| 107 } | |
| 108 | |
| 109 base::ResetAndReturn(&decryptor_ready_cb_) | |
| 110 .Run(cdm_context->GetDecryptor(), cdm_attached_cb); | |
| 111 } | |
| 112 | |
| 113 void RendererImpl::Flush(const base::Closure& flush_cb) { | |
| 114 DVLOG(1) << __FUNCTION__; | |
| 115 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 116 DCHECK(flush_cb_.is_null()); | |
| 117 | |
| 118 if (state_ != STATE_PLAYING) { | |
| 119 DCHECK_EQ(state_, STATE_ERROR); | |
| 120 return; | |
| 121 } | |
| 122 | |
| 123 flush_cb_ = flush_cb; | |
| 124 state_ = STATE_FLUSHING; | |
| 125 | |
| 126 if (time_ticking_) | |
| 127 PausePlayback(); | |
| 128 | |
| 129 FlushAudioRenderer(); | |
| 130 } | |
| 131 | |
| 132 void RendererImpl::StartPlayingFrom(base::TimeDelta time) { | |
| 133 DVLOG(1) << __FUNCTION__; | |
| 134 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 135 | |
| 136 if (state_ != STATE_PLAYING) { | |
| 137 DCHECK_EQ(state_, STATE_ERROR); | |
| 138 return; | |
| 139 } | |
| 140 | |
| 141 time_source_->SetMediaTime(time); | |
| 142 | |
| 143 if (audio_renderer_) | |
| 144 audio_renderer_->StartPlaying(); | |
| 145 if (video_renderer_) | |
| 146 video_renderer_->StartPlayingFrom(time); | |
| 147 } | |
| 148 | |
| 149 void RendererImpl::SetPlaybackRate(float playback_rate) { | |
| 150 DVLOG(1) << __FUNCTION__ << "(" << playback_rate << ")"; | |
| 151 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 152 | |
| 153 // Playback rate changes are only carried out while playing. | |
| 154 if (state_ != STATE_PLAYING) | |
| 155 return; | |
| 156 | |
| 157 time_source_->SetPlaybackRate(playback_rate); | |
| 158 } | |
| 159 | |
| 160 void RendererImpl::SetVolume(float volume) { | |
| 161 DVLOG(1) << __FUNCTION__; | |
| 162 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 163 | |
| 164 if (audio_renderer_) | |
| 165 audio_renderer_->SetVolume(volume); | |
| 166 } | |
| 167 | |
| 168 base::TimeDelta RendererImpl::GetMediaTime() { | |
| 169 // No BelongsToCurrentThread() checking because this can be called from other | |
| 170 // threads. | |
| 171 return time_source_->CurrentMediaTime(); | |
| 172 } | |
| 173 | |
| 174 bool RendererImpl::HasAudio() { | |
| 175 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 176 return audio_renderer_ != NULL; | |
| 177 } | |
| 178 | |
| 179 bool RendererImpl::HasVideo() { | |
| 180 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 181 return video_renderer_ != NULL; | |
| 182 } | |
| 183 | |
| 184 void RendererImpl::DisableUnderflowForTesting() { | |
| 185 DVLOG(1) << __FUNCTION__; | |
| 186 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 187 DCHECK_EQ(state_, STATE_UNINITIALIZED); | |
| 188 | |
| 189 underflow_disabled_for_testing_ = true; | |
| 190 } | |
| 191 | |
| 192 void RendererImpl::EnableClocklessVideoPlaybackForTesting() { | |
| 193 DVLOG(1) << __FUNCTION__; | |
| 194 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 195 DCHECK_EQ(state_, STATE_UNINITIALIZED); | |
| 196 DCHECK(underflow_disabled_for_testing_) | |
| 197 << "Underflow must be disabled for clockless video playback"; | |
| 198 | |
| 199 clockless_video_playback_enabled_for_testing_ = true; | |
| 200 } | |
| 201 | |
| 202 base::TimeDelta RendererImpl::GetMediaTimeForSyncingVideo() { | |
| 203 // No BelongsToCurrentThread() checking because this can be called from other | |
| 204 // threads. | |
| 205 // | |
| 206 // TODO(scherkus): Currently called from VideoRendererImpl's internal thread, | |
| 207 // which should go away at some point http://crbug.com/110814 | |
| 208 if (clockless_video_playback_enabled_for_testing_) | |
| 209 return base::TimeDelta::Max(); | |
| 210 | |
| 211 return time_source_->CurrentMediaTimeForSyncingVideo(); | |
| 212 } | |
| 213 | |
| 214 void RendererImpl::SetDecryptorReadyCallback( | |
| 215 const DecryptorReadyCB& decryptor_ready_cb) { | |
| 216 // Cancels the previous decryptor request. | |
| 217 if (decryptor_ready_cb.is_null()) { | |
| 218 if (!decryptor_ready_cb_.is_null()) { | |
| 219 base::ResetAndReturn(&decryptor_ready_cb_) | |
| 220 .Run(nullptr, base::Bind(IgnoreCdmAttached)); | |
| 221 } | |
| 222 return; | |
| 223 } | |
| 224 | |
| 225 // We initialize audio and video decoders in sequence. | |
| 226 DCHECK(decryptor_ready_cb_.is_null()); | |
| 227 | |
| 228 if (cdm_context_) { | |
| 229 decryptor_ready_cb.Run(cdm_context_->GetDecryptor(), | |
| 230 base::Bind(IgnoreCdmAttached)); | |
| 231 return; | |
| 232 } | |
| 233 | |
| 234 decryptor_ready_cb_ = decryptor_ready_cb; | |
| 235 } | |
| 236 | |
| 237 void RendererImpl::InitializeAudioRenderer() { | |
| 238 DVLOG(1) << __FUNCTION__; | |
| 239 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 240 DCHECK_EQ(state_, STATE_INITIALIZING); | |
| 241 DCHECK(!init_cb_.is_null()); | |
| 242 | |
| 243 PipelineStatusCB done_cb = | |
| 244 base::Bind(&RendererImpl::OnAudioRendererInitializeDone, weak_this_); | |
| 245 | |
| 246 if (!demuxer_stream_provider_->GetStream(DemuxerStream::AUDIO)) { | |
| 247 audio_renderer_.reset(); | |
| 248 task_runner_->PostTask(FROM_HERE, base::Bind(done_cb, PIPELINE_OK)); | |
| 249 return; | |
| 250 } | |
| 251 | |
| 252 // Note: After the initialization of a renderer, error events from it may | |
| 253 // happen at any time and all future calls must guard against STATE_ERROR. | |
| 254 audio_renderer_->Initialize( | |
| 255 demuxer_stream_provider_->GetStream(DemuxerStream::AUDIO), done_cb, | |
| 256 base::Bind(&RendererImpl::SetDecryptorReadyCallback, weak_this_), | |
| 257 base::Bind(&RendererImpl::OnUpdateStatistics, weak_this_), | |
| 258 base::Bind(&RendererImpl::OnBufferingStateChanged, weak_this_, | |
| 259 &audio_buffering_state_), | |
| 260 base::Bind(&RendererImpl::OnAudioRendererEnded, weak_this_), | |
| 261 base::Bind(&RendererImpl::OnError, weak_this_)); | |
| 262 } | |
| 263 | |
| 264 void RendererImpl::OnAudioRendererInitializeDone(PipelineStatus status) { | |
| 265 DVLOG(1) << __FUNCTION__ << ": " << status; | |
| 266 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 267 | |
| 268 // OnError() may be fired at any time by the renderers, even if they thought | |
| 269 // they initialized successfully (due to delayed output device setup). | |
| 270 if (state_ != STATE_INITIALIZING) { | |
| 271 DCHECK(init_cb_.is_null()); | |
| 272 audio_renderer_.reset(); | |
| 273 return; | |
| 274 } | |
| 275 | |
| 276 if (status != PIPELINE_OK) { | |
| 277 base::ResetAndReturn(&init_cb_).Run(status); | |
| 278 return; | |
| 279 } | |
| 280 | |
| 281 DCHECK(!init_cb_.is_null()); | |
| 282 InitializeVideoRenderer(); | |
| 283 } | |
| 284 | |
| 285 void RendererImpl::InitializeVideoRenderer() { | |
| 286 DVLOG(1) << __FUNCTION__; | |
| 287 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 288 DCHECK_EQ(state_, STATE_INITIALIZING); | |
| 289 DCHECK(!init_cb_.is_null()); | |
| 290 | |
| 291 PipelineStatusCB done_cb = | |
| 292 base::Bind(&RendererImpl::OnVideoRendererInitializeDone, weak_this_); | |
| 293 | |
| 294 if (!demuxer_stream_provider_->GetStream(DemuxerStream::VIDEO)) { | |
| 295 video_renderer_.reset(); | |
| 296 task_runner_->PostTask(FROM_HERE, base::Bind(done_cb, PIPELINE_OK)); | |
| 297 return; | |
| 298 } | |
| 299 | |
| 300 video_renderer_->Initialize( | |
| 301 demuxer_stream_provider_->GetStream(DemuxerStream::VIDEO), done_cb, | |
| 302 base::Bind(&RendererImpl::SetDecryptorReadyCallback, weak_this_), | |
| 303 base::Bind(&RendererImpl::OnUpdateStatistics, weak_this_), | |
| 304 base::Bind(&RendererImpl::OnBufferingStateChanged, weak_this_, | |
| 305 &video_buffering_state_), | |
| 306 base::ResetAndReturn(&paint_cb_), | |
| 307 base::Bind(&RendererImpl::OnVideoRendererEnded, weak_this_), | |
| 308 base::Bind(&RendererImpl::OnError, weak_this_), | |
| 309 base::Bind(&RendererImpl::GetMediaTimeForSyncingVideo, | |
| 310 base::Unretained(this))); | |
| 311 } | |
| 312 | |
| 313 void RendererImpl::OnVideoRendererInitializeDone(PipelineStatus status) { | |
| 314 DVLOG(1) << __FUNCTION__ << ": " << status; | |
| 315 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 316 | |
| 317 // OnError() may be fired at any time by the renderers, even if they thought | |
| 318 // they initialized successfully (due to delayed output device setup). | |
| 319 if (state_ != STATE_INITIALIZING) { | |
| 320 DCHECK(init_cb_.is_null()); | |
| 321 audio_renderer_.reset(); | |
| 322 video_renderer_.reset(); | |
| 323 return; | |
| 324 } | |
| 325 | |
| 326 DCHECK(!init_cb_.is_null()); | |
| 327 | |
| 328 if (status != PIPELINE_OK) { | |
| 329 base::ResetAndReturn(&init_cb_).Run(status); | |
| 330 return; | |
| 331 } | |
| 332 | |
| 333 if (audio_renderer_) { | |
| 334 time_source_ = audio_renderer_->GetTimeSource(); | |
| 335 } else { | |
| 336 wall_clock_time_source_.reset(new WallClockTimeSource()); | |
| 337 time_source_ = wall_clock_time_source_.get(); | |
| 338 } | |
| 339 | |
| 340 state_ = STATE_PLAYING; | |
| 341 DCHECK(time_source_); | |
| 342 DCHECK(audio_renderer_ || video_renderer_); | |
| 343 base::ResetAndReturn(&init_cb_).Run(PIPELINE_OK); | |
| 344 } | |
| 345 | |
| 346 void RendererImpl::FlushAudioRenderer() { | |
| 347 DVLOG(1) << __FUNCTION__; | |
| 348 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 349 DCHECK_EQ(state_, STATE_FLUSHING); | |
| 350 DCHECK(!flush_cb_.is_null()); | |
| 351 | |
| 352 if (!audio_renderer_) { | |
| 353 OnAudioRendererFlushDone(); | |
| 354 return; | |
| 355 } | |
| 356 | |
| 357 audio_renderer_->Flush( | |
| 358 base::Bind(&RendererImpl::OnAudioRendererFlushDone, weak_this_)); | |
| 359 } | |
| 360 | |
| 361 void RendererImpl::OnAudioRendererFlushDone() { | |
| 362 DVLOG(1) << __FUNCTION__; | |
| 363 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 364 | |
| 365 if (state_ == STATE_ERROR) { | |
| 366 DCHECK(flush_cb_.is_null()); | |
| 367 return; | |
| 368 } | |
| 369 | |
| 370 DCHECK_EQ(state_, STATE_FLUSHING); | |
| 371 DCHECK(!flush_cb_.is_null()); | |
| 372 | |
| 373 DCHECK_EQ(audio_buffering_state_, BUFFERING_HAVE_NOTHING); | |
| 374 audio_ended_ = false; | |
| 375 FlushVideoRenderer(); | |
| 376 } | |
| 377 | |
| 378 void RendererImpl::FlushVideoRenderer() { | |
| 379 DVLOG(1) << __FUNCTION__; | |
| 380 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 381 DCHECK_EQ(state_, STATE_FLUSHING); | |
| 382 DCHECK(!flush_cb_.is_null()); | |
| 383 | |
| 384 if (!video_renderer_) { | |
| 385 OnVideoRendererFlushDone(); | |
| 386 return; | |
| 387 } | |
| 388 | |
| 389 video_renderer_->Flush( | |
| 390 base::Bind(&RendererImpl::OnVideoRendererFlushDone, weak_this_)); | |
| 391 } | |
| 392 | |
| 393 void RendererImpl::OnVideoRendererFlushDone() { | |
| 394 DVLOG(1) << __FUNCTION__; | |
| 395 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 396 | |
| 397 if (state_ == STATE_ERROR) { | |
| 398 DCHECK(flush_cb_.is_null()); | |
| 399 return; | |
| 400 } | |
| 401 | |
| 402 DCHECK_EQ(state_, STATE_FLUSHING); | |
| 403 DCHECK(!flush_cb_.is_null()); | |
| 404 | |
| 405 DCHECK_EQ(video_buffering_state_, BUFFERING_HAVE_NOTHING); | |
| 406 video_ended_ = false; | |
| 407 state_ = STATE_PLAYING; | |
| 408 base::ResetAndReturn(&flush_cb_).Run(); | |
| 409 } | |
| 410 | |
| 411 void RendererImpl::OnUpdateStatistics(const PipelineStatistics& stats) { | |
| 412 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 413 statistics_cb_.Run(stats); | |
| 414 } | |
| 415 | |
| 416 void RendererImpl::OnBufferingStateChanged(BufferingState* buffering_state, | |
| 417 BufferingState new_buffering_state) { | |
| 418 DVLOG(1) << __FUNCTION__ << "(" << *buffering_state << ", " | |
| 419 << new_buffering_state << ") " | |
| 420 << (buffering_state == &audio_buffering_state_ ? "audio" : "video"); | |
| 421 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 422 bool was_waiting_for_enough_data = WaitingForEnoughData(); | |
| 423 | |
| 424 *buffering_state = new_buffering_state; | |
| 425 | |
| 426 // Disable underflow by ignoring updates that renderers have ran out of data. | |
| 427 if (state_ == STATE_PLAYING && underflow_disabled_for_testing_ && | |
| 428 time_ticking_) { | |
| 429 DVLOG(1) << "Update ignored because underflow is disabled for testing."; | |
| 430 return; | |
| 431 } | |
| 432 | |
| 433 // Renderer underflowed. | |
| 434 if (!was_waiting_for_enough_data && WaitingForEnoughData()) { | |
| 435 PausePlayback(); | |
| 436 | |
| 437 // TODO(scherkus): Fire BUFFERING_HAVE_NOTHING callback to alert clients of | |
| 438 // underflow state http://crbug.com/144683 | |
| 439 return; | |
| 440 } | |
| 441 | |
| 442 // Renderer prerolled. | |
| 443 if (was_waiting_for_enough_data && !WaitingForEnoughData()) { | |
| 444 StartPlayback(); | |
| 445 buffering_state_cb_.Run(BUFFERING_HAVE_ENOUGH); | |
| 446 return; | |
| 447 } | |
| 448 } | |
| 449 | |
| 450 bool RendererImpl::WaitingForEnoughData() const { | |
| 451 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 452 if (state_ != STATE_PLAYING) | |
| 453 return false; | |
| 454 if (audio_renderer_ && audio_buffering_state_ != BUFFERING_HAVE_ENOUGH) | |
| 455 return true; | |
| 456 if (video_renderer_ && video_buffering_state_ != BUFFERING_HAVE_ENOUGH) | |
| 457 return true; | |
| 458 return false; | |
| 459 } | |
| 460 | |
| 461 void RendererImpl::PausePlayback() { | |
| 462 DVLOG(1) << __FUNCTION__; | |
| 463 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 464 DCHECK(time_ticking_); | |
| 465 switch (state_) { | |
| 466 case STATE_PLAYING: | |
| 467 DCHECK(PlaybackHasEnded() || WaitingForEnoughData()) | |
| 468 << "Playback should only pause due to ending or underflowing"; | |
| 469 break; | |
| 470 | |
| 471 case STATE_FLUSHING: | |
| 472 // It's OK to pause playback when flushing. | |
| 473 break; | |
| 474 | |
| 475 case STATE_UNINITIALIZED: | |
| 476 case STATE_INITIALIZING: | |
| 477 NOTREACHED() << "Invalid state: " << state_; | |
| 478 break; | |
| 479 | |
| 480 case STATE_ERROR: | |
| 481 // An error state may occur at any time. | |
| 482 break; | |
| 483 } | |
| 484 | |
| 485 time_ticking_ = false; | |
| 486 time_source_->StopTicking(); | |
| 487 } | |
| 488 | |
| 489 void RendererImpl::StartPlayback() { | |
| 490 DVLOG(1) << __FUNCTION__; | |
| 491 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 492 DCHECK_EQ(state_, STATE_PLAYING); | |
| 493 DCHECK(!time_ticking_); | |
| 494 DCHECK(!WaitingForEnoughData()); | |
| 495 | |
| 496 time_ticking_ = true; | |
| 497 time_source_->StartTicking(); | |
| 498 } | |
| 499 | |
| 500 void RendererImpl::OnAudioRendererEnded() { | |
| 501 DVLOG(1) << __FUNCTION__; | |
| 502 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 503 | |
| 504 if (state_ != STATE_PLAYING) | |
| 505 return; | |
| 506 | |
| 507 DCHECK(!audio_ended_); | |
| 508 audio_ended_ = true; | |
| 509 | |
| 510 RunEndedCallbackIfNeeded(); | |
| 511 } | |
| 512 | |
| 513 void RendererImpl::OnVideoRendererEnded() { | |
| 514 DVLOG(1) << __FUNCTION__; | |
| 515 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 516 | |
| 517 if (state_ != STATE_PLAYING) | |
| 518 return; | |
| 519 | |
| 520 DCHECK(!video_ended_); | |
| 521 video_ended_ = true; | |
| 522 | |
| 523 RunEndedCallbackIfNeeded(); | |
| 524 } | |
| 525 | |
| 526 bool RendererImpl::PlaybackHasEnded() const { | |
| 527 DVLOG(1) << __FUNCTION__; | |
| 528 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 529 | |
| 530 if (audio_renderer_ && !audio_ended_) | |
| 531 return false; | |
| 532 | |
| 533 if (video_renderer_ && !video_ended_) | |
| 534 return false; | |
| 535 | |
| 536 return true; | |
| 537 } | |
| 538 | |
| 539 void RendererImpl::RunEndedCallbackIfNeeded() { | |
| 540 DVLOG(1) << __FUNCTION__; | |
| 541 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 542 | |
| 543 if (!PlaybackHasEnded()) | |
| 544 return; | |
| 545 | |
| 546 if (time_ticking_) | |
| 547 PausePlayback(); | |
| 548 | |
| 549 ended_cb_.Run(); | |
| 550 } | |
| 551 | |
| 552 void RendererImpl::OnError(PipelineStatus error) { | |
| 553 DVLOG(1) << __FUNCTION__ << "(" << error << ")"; | |
| 554 DCHECK(task_runner_->BelongsToCurrentThread()); | |
| 555 DCHECK_NE(PIPELINE_OK, error) << "PIPELINE_OK isn't an error!"; | |
| 556 | |
| 557 // An error has already been delivered. | |
| 558 if (state_ == STATE_ERROR) | |
| 559 return; | |
| 560 | |
| 561 const State old_state = state_; | |
| 562 state_ = STATE_ERROR; | |
| 563 | |
| 564 if (old_state == STATE_INITIALIZING) { | |
| 565 base::ResetAndReturn(&init_cb_).Run(error); | |
| 566 return; | |
| 567 } | |
| 568 | |
| 569 // After OnError() returns, the pipeline may destroy |this|. | |
| 570 base::ResetAndReturn(&error_cb_).Run(error); | |
| 571 | |
| 572 if (!flush_cb_.is_null()) | |
| 573 base::ResetAndReturn(&flush_cb_).Run(); | |
| 574 } | |
| 575 | |
| 576 } // namespace media | |
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Chromium Code Reviews
Issue 941633004:
Moved renderer implementation from media/filters/ to media/renderers/ (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master