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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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 "media/base/seekable_buffer.h" | 5 #include "media/base/seekable_buffer.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 | 8 |
9 #include "base/logging.h" | 9 #include "base/logging.h" |
10 #include "media/base/data_buffer.h" | 10 #include "media/base/data_buffer.h" |
11 | 11 |
12 namespace media { | 12 namespace media { |
13 | 13 |
14 SeekableBuffer::SeekableBuffer(size_t backward_capacity, | 14 SeekableBuffer::SeekableBuffer(size_t backward_capacity, |
15 size_t forward_capacity) | 15 size_t forward_capacity) |
16 : current_buffer_offset_(0), | 16 : current_buffer_offset_(0), |
17 backward_capacity_(backward_capacity), | 17 backward_capacity_(backward_capacity), |
18 backward_bytes_(0), | 18 backward_bytes_(0), |
19 forward_capacity_(forward_capacity), | 19 forward_capacity_(forward_capacity), |
20 forward_bytes_(0) { | 20 forward_bytes_(0), |
| 21 current_time_(StreamSample::kInvalidTimestamp) { |
21 current_buffer_ = buffers_.begin(); | 22 current_buffer_ = buffers_.begin(); |
22 } | 23 } |
23 | 24 |
24 SeekableBuffer::~SeekableBuffer() { | 25 SeekableBuffer::~SeekableBuffer() { |
25 } | 26 } |
26 | 27 |
27 void SeekableBuffer::Clear() { | 28 void SeekableBuffer::Clear() { |
28 buffers_.clear(); | 29 buffers_.clear(); |
29 current_buffer_ = buffers_.begin(); | 30 current_buffer_ = buffers_.begin(); |
30 current_buffer_offset_ = 0; | 31 current_buffer_offset_ = 0; |
31 backward_bytes_ = 0; | 32 backward_bytes_ = 0; |
32 forward_bytes_ = 0; | 33 forward_bytes_ = 0; |
33 current_time_ = base::TimeDelta(); | 34 current_time_ = StreamSample::kInvalidTimestamp; |
34 } | 35 } |
35 | 36 |
36 | 37 |
37 size_t SeekableBuffer::Read(uint8* data, size_t size) { | 38 size_t SeekableBuffer::Read(uint8* data, size_t size) { |
38 DCHECK(data); | 39 DCHECK(data); |
39 return InternalRead(data, size, true); | 40 return InternalRead(data, size, true); |
40 } | 41 } |
41 | 42 |
42 size_t SeekableBuffer::Peek(uint8* data, size_t size) { | 43 size_t SeekableBuffer::Peek(uint8* data, size_t size) { |
43 DCHECK(data); | 44 DCHECK(data); |
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255 (*buffer)->GetTimestamp().InMicroseconds() > 0) { | 256 (*buffer)->GetTimestamp().InMicroseconds() > 0) { |
256 int64 time_offset = ((*buffer)->GetDuration().InMicroseconds() * | 257 int64 time_offset = ((*buffer)->GetDuration().InMicroseconds() * |
257 offset) / (*buffer)->GetDataSize(); | 258 offset) / (*buffer)->GetDataSize(); |
258 | 259 |
259 current_time_ = (*buffer)->GetTimestamp() + | 260 current_time_ = (*buffer)->GetTimestamp() + |
260 base::TimeDelta::FromMicroseconds(time_offset); | 261 base::TimeDelta::FromMicroseconds(time_offset); |
261 } | 262 } |
262 } | 263 } |
263 | 264 |
264 } // namespace media | 265 } // namespace media |
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