OLD | NEW |
1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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_host_impl.h" | 5 #include "media/blink/buffered_data_source_host_impl.h" |
6 | 6 |
7 namespace content { | 7 namespace media { |
8 | 8 |
9 BufferedDataSourceHostImpl::BufferedDataSourceHostImpl() | 9 BufferedDataSourceHostImpl::BufferedDataSourceHostImpl() |
10 : total_bytes_(0), | 10 : total_bytes_(0), |
11 did_loading_progress_(false) { } | 11 did_loading_progress_(false) { } |
12 | 12 |
13 BufferedDataSourceHostImpl::~BufferedDataSourceHostImpl() { } | 13 BufferedDataSourceHostImpl::~BufferedDataSourceHostImpl() { } |
14 | 14 |
15 void BufferedDataSourceHostImpl::SetTotalBytes(int64 total_bytes) { | 15 void BufferedDataSourceHostImpl::SetTotalBytes(int64 total_bytes) { |
16 total_bytes_ = total_bytes; | 16 total_bytes_ = total_bytes; |
17 } | 17 } |
18 | 18 |
19 void BufferedDataSourceHostImpl::AddBufferedByteRange(int64 start, int64 end) { | 19 void BufferedDataSourceHostImpl::AddBufferedByteRange(int64 start, int64 end) { |
20 buffered_byte_ranges_.Add(start, end); | 20 buffered_byte_ranges_.Add(start, end); |
21 did_loading_progress_ = true; | 21 did_loading_progress_ = true; |
22 } | 22 } |
23 | 23 |
24 static base::TimeDelta TimeForByteOffset( | 24 static base::TimeDelta TimeForByteOffset( |
25 int64 byte_offset, int64 total_bytes, base::TimeDelta duration) { | 25 int64 byte_offset, int64 total_bytes, base::TimeDelta duration) { |
26 double position = static_cast<double>(byte_offset) / total_bytes; | 26 double position = static_cast<double>(byte_offset) / total_bytes; |
27 // Snap to the beginning/end where the approximation can look especially bad. | 27 // Snap to the beginning/end where the approximation can look especially bad. |
28 if (position < 0.01) | 28 if (position < 0.01) |
29 return base::TimeDelta(); | 29 return base::TimeDelta(); |
30 if (position > 0.99) | 30 if (position > 0.99) |
31 return duration; | 31 return duration; |
32 return base::TimeDelta::FromMilliseconds( | 32 return base::TimeDelta::FromMilliseconds( |
33 static_cast<int64>(position * duration.InMilliseconds())); | 33 static_cast<int64>(position * duration.InMilliseconds())); |
34 } | 34 } |
35 | 35 |
36 void BufferedDataSourceHostImpl::AddBufferedTimeRanges( | 36 void BufferedDataSourceHostImpl::AddBufferedTimeRanges( |
37 media::Ranges<base::TimeDelta>* buffered_time_ranges, | 37 Ranges<base::TimeDelta>* buffered_time_ranges, |
38 base::TimeDelta media_duration) const { | 38 base::TimeDelta media_duration) const { |
39 DCHECK(media_duration != media::kNoTimestamp()); | 39 DCHECK(media_duration != kNoTimestamp()); |
40 DCHECK(media_duration != media::kInfiniteDuration()); | 40 DCHECK(media_duration != kInfiniteDuration()); |
41 if (total_bytes_ && buffered_byte_ranges_.size()) { | 41 if (total_bytes_ && buffered_byte_ranges_.size()) { |
42 for (size_t i = 0; i < buffered_byte_ranges_.size(); ++i) { | 42 for (size_t i = 0; i < buffered_byte_ranges_.size(); ++i) { |
43 int64 start = buffered_byte_ranges_.start(i); | 43 int64 start = buffered_byte_ranges_.start(i); |
44 int64 end = buffered_byte_ranges_.end(i); | 44 int64 end = buffered_byte_ranges_.end(i); |
45 buffered_time_ranges->Add( | 45 buffered_time_ranges->Add( |
46 TimeForByteOffset(start, total_bytes_, media_duration), | 46 TimeForByteOffset(start, total_bytes_, media_duration), |
47 TimeForByteOffset(end, total_bytes_, media_duration)); | 47 TimeForByteOffset(end, total_bytes_, media_duration)); |
48 } | 48 } |
49 } | 49 } |
50 } | 50 } |
51 | 51 |
52 bool BufferedDataSourceHostImpl::DidLoadingProgress() { | 52 bool BufferedDataSourceHostImpl::DidLoadingProgress() { |
53 bool ret = did_loading_progress_; | 53 bool ret = did_loading_progress_; |
54 did_loading_progress_ = false; | 54 did_loading_progress_ = false; |
55 return ret; | 55 return ret; |
56 } | 56 } |
57 | 57 |
58 } // namespace content | 58 } // namespace media |
OLD | NEW |