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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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_(kNoTimestamp) { | 21 current_time_(kNoTimestamp()) { |
| 22 current_buffer_ = buffers_.begin(); | 22 current_buffer_ = buffers_.begin(); |
| 23 } | 23 } |
| 24 | 24 |
| 25 SeekableBuffer::~SeekableBuffer() { | 25 SeekableBuffer::~SeekableBuffer() { |
| 26 } | 26 } |
| 27 | 27 |
| 28 void SeekableBuffer::Clear() { | 28 void SeekableBuffer::Clear() { |
| 29 buffers_.clear(); | 29 buffers_.clear(); |
| 30 current_buffer_ = buffers_.begin(); | 30 current_buffer_ = buffers_.begin(); |
| 31 current_buffer_offset_ = 0; | 31 current_buffer_offset_ = 0; |
| 32 backward_bytes_ = 0; | 32 backward_bytes_ = 0; |
| 33 forward_bytes_ = 0; | 33 forward_bytes_ = 0; |
| 34 current_time_ = kNoTimestamp; | 34 current_time_ = kNoTimestamp(); |
| 35 } | 35 } |
| 36 | 36 |
| 37 size_t SeekableBuffer::Read(uint8* data, size_t size) { | 37 size_t SeekableBuffer::Read(uint8* data, size_t size) { |
| 38 DCHECK(data); | 38 DCHECK(data); |
| 39 return InternalRead(data, size, true); | 39 return InternalRead(data, size, true); |
| 40 } | 40 } |
| 41 | 41 |
| 42 size_t SeekableBuffer::Peek(uint8* data, size_t size) { | 42 size_t SeekableBuffer::Peek(uint8* data, size_t size) { |
| 43 DCHECK(data); | 43 DCHECK(data); |
| 44 return InternalRead(data, size, false); | 44 return InternalRead(data, size, false); |
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| 260 (*buffer)->GetTimestamp().InMicroseconds() > 0) { | 260 (*buffer)->GetTimestamp().InMicroseconds() > 0) { |
| 261 int64 time_offset = ((*buffer)->GetDuration().InMicroseconds() * | 261 int64 time_offset = ((*buffer)->GetDuration().InMicroseconds() * |
| 262 offset) / (*buffer)->GetDataSize(); | 262 offset) / (*buffer)->GetDataSize(); |
| 263 | 263 |
| 264 current_time_ = (*buffer)->GetTimestamp() + | 264 current_time_ = (*buffer)->GetTimestamp() + |
| 265 base::TimeDelta::FromMicroseconds(time_offset); | 265 base::TimeDelta::FromMicroseconds(time_offset); |
| 266 } | 266 } |
| 267 } | 267 } |
| 268 | 268 |
| 269 } // namespace media | 269 } // namespace media |
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