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| 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 |
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