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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" | |
scherkus (not reviewing)
2014/04/03 21:59:37
is this because you removed the kHttpScheme consta
sandersd (OOO until July 31)
2014/04/04 23:48:41
Yes, but I removed them because of a link error.
| |
10 #include "media/base/media_log.h" | 11 #include "media/base/media_log.h" |
11 #include "net/base/net_errors.h" | 12 #include "net/base/net_errors.h" |
12 | 13 |
13 using blink::WebFrame; | 14 using blink::WebFrame; |
14 | 15 |
15 namespace { | 16 namespace { |
16 | 17 |
17 // BufferedDataSource has an intermediate buffer, this value governs the initial | 18 // BufferedDataSource has an intermediate buffer, this value governs the initial |
18 // size of that buffer. It is set to 32KB because this is a typical read size | 19 // size of that buffer. It is set to 32KB because this is a typical read size |
19 // of FFmpeg. | 20 // of FFmpeg. |
20 const int kInitialReadBufferSize = 32768; | 21 const int kInitialReadBufferSize = 32768; |
21 | 22 |
22 // Number of cache misses we allow for a single Read() before signaling an | 23 // Number of cache misses we allow for a single Read() before signaling an |
23 // error. | 24 // error. |
24 const int kNumCacheMissRetries = 3; | 25 const int kNumCacheMissRetries = 3; |
25 | 26 |
26 } // namespace | 27 } // namespace |
27 | 28 |
28 namespace content { | 29 namespace content { |
29 | 30 |
31 BufferedDataSourceHost::~BufferedDataSourceHost() {} | |
32 | |
30 class BufferedDataSource::ReadOperation { | 33 class BufferedDataSource::ReadOperation { |
31 public: | 34 public: |
32 ReadOperation(int64 position, int size, uint8* data, | 35 ReadOperation(int64 position, int size, uint8* data, |
33 const media::DataSource::ReadCB& callback); | 36 const media::DataSource::ReadCB& callback); |
34 ~ReadOperation(); | 37 ~ReadOperation(); |
35 | 38 |
36 // Runs |callback_| with the given |result|, deleting the operation | 39 // Runs |callback_| with the given |result|, deleting the operation |
37 // afterwards. | 40 // afterwards. |
38 static void Run(scoped_ptr<ReadOperation> read_op, int result); | 41 static void Run(scoped_ptr<ReadOperation> read_op, int result); |
39 | 42 |
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74 // static | 77 // static |
75 void BufferedDataSource::ReadOperation::Run( | 78 void BufferedDataSource::ReadOperation::Run( |
76 scoped_ptr<ReadOperation> read_op, int result) { | 79 scoped_ptr<ReadOperation> read_op, int result) { |
77 base::ResetAndReturn(&read_op->callback_).Run(result); | 80 base::ResetAndReturn(&read_op->callback_).Run(result); |
78 } | 81 } |
79 | 82 |
80 BufferedDataSource::BufferedDataSource( | 83 BufferedDataSource::BufferedDataSource( |
81 const scoped_refptr<base::MessageLoopProxy>& render_loop, | 84 const scoped_refptr<base::MessageLoopProxy>& render_loop, |
82 WebFrame* frame, | 85 WebFrame* frame, |
83 media::MediaLog* media_log, | 86 media::MediaLog* media_log, |
84 media::DataSourceHost* host, | 87 BufferedDataSourceHost* host, |
85 const DownloadingCB& downloading_cb) | 88 const DownloadingCB& downloading_cb) |
86 : cors_mode_(BufferedResourceLoader::kUnspecified), | 89 : cors_mode_(BufferedResourceLoader::kUnspecified), |
87 total_bytes_(kPositionNotSpecified), | 90 total_bytes_(kPositionNotSpecified), |
88 assume_fully_buffered_(false), | 91 assume_fully_buffered_(false), |
89 streaming_(false), | 92 streaming_(false), |
90 frame_(frame), | 93 frame_(frame), |
91 intermediate_read_buffer_(new uint8[kInitialReadBufferSize]), | 94 intermediate_read_buffer_(new uint8[kInitialReadBufferSize]), |
92 intermediate_read_buffer_size_(kInitialReadBufferSize), | 95 intermediate_read_buffer_size_(kInitialReadBufferSize), |
93 render_loop_(render_loop), | 96 render_loop_(render_loop), |
94 stop_signal_received_(false), | 97 stop_signal_received_(false), |
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530 return; | 533 return; |
531 } | 534 } |
532 | 535 |
533 // If media is currently playing or the page indicated preload=auto, | 536 // If media is currently playing or the page indicated preload=auto, |
534 // use threshold strategy to enable/disable deferring when the buffer | 537 // use threshold strategy to enable/disable deferring when the buffer |
535 // is full/depleted. | 538 // is full/depleted. |
536 loader_->UpdateDeferStrategy(BufferedResourceLoader::kCapacityDefer); | 539 loader_->UpdateDeferStrategy(BufferedResourceLoader::kCapacityDefer); |
537 } | 540 } |
538 | 541 |
539 } // namespace content | 542 } // namespace content |
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