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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/renderer/media/buffered_data_source.h" | 5 #include "content/renderer/media/buffered_data_source.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/callback_helpers.h" | 8 #include "base/callback_helpers.h" |
9 #include "base/message_loop/message_loop_proxy.h" | 9 #include "base/message_loop/message_loop_proxy.h" |
10 #include "content/public/common/url_constants.h" | 10 #include "content/public/common/url_constants.h" |
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72 DCHECK(callback_.is_null()); | 72 DCHECK(callback_.is_null()); |
73 } | 73 } |
74 | 74 |
75 // static | 75 // static |
76 void BufferedDataSource::ReadOperation::Run( | 76 void BufferedDataSource::ReadOperation::Run( |
77 scoped_ptr<ReadOperation> read_op, int result) { | 77 scoped_ptr<ReadOperation> read_op, int result) { |
78 base::ResetAndReturn(&read_op->callback_).Run(result); | 78 base::ResetAndReturn(&read_op->callback_).Run(result); |
79 } | 79 } |
80 | 80 |
81 BufferedDataSource::BufferedDataSource( | 81 BufferedDataSource::BufferedDataSource( |
| 82 const GURL& url, |
| 83 BufferedResourceLoader::CORSMode cors_mode, |
82 const scoped_refptr<base::MessageLoopProxy>& render_loop, | 84 const scoped_refptr<base::MessageLoopProxy>& render_loop, |
83 WebFrame* frame, | 85 WebFrame* frame, |
84 media::MediaLog* media_log, | 86 media::MediaLog* media_log, |
85 BufferedDataSourceHost* host, | 87 BufferedDataSourceHost* host, |
86 const DownloadingCB& downloading_cb) | 88 const DownloadingCB& downloading_cb) |
87 : cors_mode_(BufferedResourceLoader::kUnspecified), | 89 : url_(url), |
| 90 cors_mode_(cors_mode), |
88 total_bytes_(kPositionNotSpecified), | 91 total_bytes_(kPositionNotSpecified), |
89 assume_fully_buffered_(false), | |
90 streaming_(false), | 92 streaming_(false), |
91 frame_(frame), | 93 frame_(frame), |
92 intermediate_read_buffer_(new uint8[kInitialReadBufferSize]), | 94 intermediate_read_buffer_(new uint8[kInitialReadBufferSize]), |
93 intermediate_read_buffer_size_(kInitialReadBufferSize), | 95 intermediate_read_buffer_size_(kInitialReadBufferSize), |
94 render_loop_(render_loop), | 96 render_loop_(render_loop), |
95 stop_signal_received_(false), | 97 stop_signal_received_(false), |
96 media_has_played_(false), | 98 media_has_played_(false), |
97 preload_(AUTO), | 99 preload_(AUTO), |
98 bitrate_(0), | 100 bitrate_(0), |
99 playback_rate_(0.0), | 101 playback_rate_(0.0), |
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121 return new BufferedResourceLoader(url_, | 123 return new BufferedResourceLoader(url_, |
122 cors_mode_, | 124 cors_mode_, |
123 first_byte_position, | 125 first_byte_position, |
124 last_byte_position, | 126 last_byte_position, |
125 strategy, | 127 strategy, |
126 bitrate_, | 128 bitrate_, |
127 playback_rate_, | 129 playback_rate_, |
128 media_log_.get()); | 130 media_log_.get()); |
129 } | 131 } |
130 | 132 |
131 void BufferedDataSource::Initialize( | 133 void BufferedDataSource::Initialize(const InitializeCB& init_cb) { |
132 const GURL& url, | |
133 BufferedResourceLoader::CORSMode cors_mode, | |
134 const InitializeCB& init_cb) { | |
135 DCHECK(render_loop_->BelongsToCurrentThread()); | 134 DCHECK(render_loop_->BelongsToCurrentThread()); |
136 DCHECK(!init_cb.is_null()); | 135 DCHECK(!init_cb.is_null()); |
137 DCHECK(!loader_.get()); | 136 DCHECK(!loader_.get()); |
138 url_ = url; | |
139 cors_mode_ = cors_mode; | |
140 | 137 |
141 init_cb_ = init_cb; | 138 init_cb_ = init_cb; |
142 | 139 |
143 if (url_.SchemeIs(url::kHttpScheme) || url_.SchemeIs(url::kHttpsScheme)) { | 140 if (url_.SchemeIsHTTPOrHTTPS()) { |
144 // Do an unbounded range request starting at the beginning. If the server | 141 // Do an unbounded range request starting at the beginning. If the server |
145 // responds with 200 instead of 206 we'll fall back into a streaming mode. | 142 // responds with 200 instead of 206 we'll fall back into a streaming mode. |
146 loader_.reset(CreateResourceLoader(0, kPositionNotSpecified)); | 143 loader_.reset(CreateResourceLoader(0, kPositionNotSpecified)); |
147 } else { | 144 } else { |
148 // For all other protocols, assume they support range request. We fetch | 145 // For all other protocols, assume they support range request. We fetch |
149 // the full range of the resource to obtain the instance size because | 146 // the full range of the resource to obtain the instance size because |
150 // we won't be served HTTP headers. | 147 // we won't be served HTTP headers. |
151 loader_.reset(CreateResourceLoader(kPositionNotSpecified, | 148 loader_.reset(CreateResourceLoader(kPositionNotSpecified, |
152 kPositionNotSpecified)); | 149 kPositionNotSpecified)); |
153 assume_fully_buffered_ = true; | |
154 } | 150 } |
155 | 151 |
156 base::WeakPtr<BufferedDataSource> weak_this = weak_factory_.GetWeakPtr(); | 152 base::WeakPtr<BufferedDataSource> weak_this = weak_factory_.GetWeakPtr(); |
157 loader_->Start( | 153 loader_->Start( |
158 base::Bind(&BufferedDataSource::StartCallback, weak_this), | 154 base::Bind(&BufferedDataSource::StartCallback, weak_this), |
159 base::Bind(&BufferedDataSource::LoadingStateChangedCallback, weak_this), | 155 base::Bind(&BufferedDataSource::LoadingStateChangedCallback, weak_this), |
160 base::Bind(&BufferedDataSource::ProgressCallback, weak_this), | 156 base::Bind(&BufferedDataSource::ProgressCallback, weak_this), |
161 frame_); | 157 frame_); |
162 } | 158 } |
163 | 159 |
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346 init_cb_is_null = init_cb_.is_null(); | 342 init_cb_is_null = init_cb_.is_null(); |
347 } | 343 } |
348 if (init_cb_is_null) { | 344 if (init_cb_is_null) { |
349 loader_->Stop(); | 345 loader_->Stop(); |
350 return; | 346 return; |
351 } | 347 } |
352 | 348 |
353 // All responses must be successful. Resources that are assumed to be fully | 349 // All responses must be successful. Resources that are assumed to be fully |
354 // buffered must have a known content length. | 350 // buffered must have a known content length. |
355 bool success = status == BufferedResourceLoader::kOk && | 351 bool success = status == BufferedResourceLoader::kOk && |
356 (!assume_fully_buffered_ || | 352 (!assume_fully_buffered() || |
357 loader_->instance_size() != kPositionNotSpecified); | 353 loader_->instance_size() != kPositionNotSpecified); |
358 | 354 |
359 if (success) { | 355 if (success) { |
360 total_bytes_ = loader_->instance_size(); | 356 total_bytes_ = loader_->instance_size(); |
361 streaming_ = !assume_fully_buffered_ && | 357 streaming_ = |
| 358 !assume_fully_buffered() && |
362 (total_bytes_ == kPositionNotSpecified || !loader_->range_supported()); | 359 (total_bytes_ == kPositionNotSpecified || !loader_->range_supported()); |
363 | 360 |
364 media_log_->SetDoubleProperty("total_bytes", | 361 media_log_->SetDoubleProperty("total_bytes", |
365 static_cast<double>(total_bytes_)); | 362 static_cast<double>(total_bytes_)); |
366 media_log_->SetBooleanProperty("streaming", streaming_); | 363 media_log_->SetBooleanProperty("streaming", streaming_); |
367 } else { | 364 } else { |
368 loader_->Stop(); | 365 loader_->Stop(); |
369 } | 366 } |
370 | 367 |
371 // TODO(scherkus): we shouldn't have to lock to signal host(), see | 368 // TODO(scherkus): we shouldn't have to lock to signal host(), see |
372 // http://crbug.com/113712 for details. | 369 // http://crbug.com/113712 for details. |
373 base::AutoLock auto_lock(lock_); | 370 base::AutoLock auto_lock(lock_); |
374 if (stop_signal_received_) | 371 if (stop_signal_received_) |
375 return; | 372 return; |
376 | 373 |
377 if (success) { | 374 if (success) { |
378 if (total_bytes_ != kPositionNotSpecified) { | 375 if (total_bytes_ != kPositionNotSpecified) { |
379 host_->SetTotalBytes(total_bytes_); | 376 host_->SetTotalBytes(total_bytes_); |
380 if (assume_fully_buffered_) | 377 if (assume_fully_buffered()) |
381 host_->AddBufferedByteRange(0, total_bytes_); | 378 host_->AddBufferedByteRange(0, total_bytes_); |
382 } | 379 } |
383 | 380 |
384 media_log_->SetBooleanProperty("single_origin", loader_->HasSingleOrigin()); | 381 media_log_->SetBooleanProperty("single_origin", loader_->HasSingleOrigin()); |
385 media_log_->SetBooleanProperty("passed_cors_access_check", | 382 media_log_->SetBooleanProperty("passed_cors_access_check", |
386 loader_->DidPassCORSAccessCheck()); | 383 loader_->DidPassCORSAccessCheck()); |
387 media_log_->SetBooleanProperty("range_header_supported", | 384 media_log_->SetBooleanProperty("range_header_supported", |
388 loader_->range_supported()); | 385 loader_->range_supported()); |
389 } | 386 } |
390 | 387 |
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466 total_bytes_); | 463 total_bytes_); |
467 } | 464 } |
468 } | 465 } |
469 ReadOperation::Run(read_op_.Pass(), bytes_read); | 466 ReadOperation::Run(read_op_.Pass(), bytes_read); |
470 } | 467 } |
471 | 468 |
472 void BufferedDataSource::LoadingStateChangedCallback( | 469 void BufferedDataSource::LoadingStateChangedCallback( |
473 BufferedResourceLoader::LoadingState state) { | 470 BufferedResourceLoader::LoadingState state) { |
474 DCHECK(render_loop_->BelongsToCurrentThread()); | 471 DCHECK(render_loop_->BelongsToCurrentThread()); |
475 | 472 |
476 if (assume_fully_buffered_) | 473 if (assume_fully_buffered()) |
477 return; | 474 return; |
478 | 475 |
479 bool is_downloading_data; | 476 bool is_downloading_data; |
480 switch (state) { | 477 switch (state) { |
481 case BufferedResourceLoader::kLoading: | 478 case BufferedResourceLoader::kLoading: |
482 is_downloading_data = true; | 479 is_downloading_data = true; |
483 break; | 480 break; |
484 case BufferedResourceLoader::kLoadingDeferred: | 481 case BufferedResourceLoader::kLoadingDeferred: |
485 case BufferedResourceLoader::kLoadingFinished: | 482 case BufferedResourceLoader::kLoadingFinished: |
486 is_downloading_data = false; | 483 is_downloading_data = false; |
487 break; | 484 break; |
488 | 485 |
489 // TODO(scherkus): we don't signal network activity changes when loads | 486 // TODO(scherkus): we don't signal network activity changes when loads |
490 // fail to preserve existing behaviour when deferring is toggled, however | 487 // fail to preserve existing behaviour when deferring is toggled, however |
491 // we should consider changing DownloadingCB to also propagate loading | 488 // we should consider changing DownloadingCB to also propagate loading |
492 // state. For example there isn't any signal today to notify the client that | 489 // state. For example there isn't any signal today to notify the client that |
493 // loading has failed (we only get errors on subsequent reads). | 490 // loading has failed (we only get errors on subsequent reads). |
494 case BufferedResourceLoader::kLoadingFailed: | 491 case BufferedResourceLoader::kLoadingFailed: |
495 return; | 492 return; |
496 } | 493 } |
497 | 494 |
498 downloading_cb_.Run(is_downloading_data); | 495 downloading_cb_.Run(is_downloading_data); |
499 } | 496 } |
500 | 497 |
501 void BufferedDataSource::ProgressCallback(int64 position) { | 498 void BufferedDataSource::ProgressCallback(int64 position) { |
502 DCHECK(render_loop_->BelongsToCurrentThread()); | 499 DCHECK(render_loop_->BelongsToCurrentThread()); |
503 | 500 |
504 if (assume_fully_buffered_) | 501 if (assume_fully_buffered()) |
505 return; | 502 return; |
506 | 503 |
507 // TODO(scherkus): we shouldn't have to lock to signal host(), see | 504 // TODO(scherkus): we shouldn't have to lock to signal host(), see |
508 // http://crbug.com/113712 for details. | 505 // http://crbug.com/113712 for details. |
509 base::AutoLock auto_lock(lock_); | 506 base::AutoLock auto_lock(lock_); |
510 if (stop_signal_received_) | 507 if (stop_signal_received_) |
511 return; | 508 return; |
512 | 509 |
513 host_->AddBufferedByteRange(loader_->first_byte_position(), position); | 510 host_->AddBufferedByteRange(loader_->first_byte_position(), position); |
514 } | 511 } |
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531 return; | 528 return; |
532 } | 529 } |
533 | 530 |
534 // If media is currently playing or the page indicated preload=auto, | 531 // If media is currently playing or the page indicated preload=auto, |
535 // use threshold strategy to enable/disable deferring when the buffer | 532 // use threshold strategy to enable/disable deferring when the buffer |
536 // is full/depleted. | 533 // is full/depleted. |
537 loader_->UpdateDeferStrategy(BufferedResourceLoader::kCapacityDefer); | 534 loader_->UpdateDeferStrategy(BufferedResourceLoader::kCapacityDefer); |
538 } | 535 } |
539 | 536 |
540 } // namespace content | 537 } // namespace content |
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