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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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/bit_reader.h" | 5 #include "media/base/bit_reader.h" |
| 6 | 6 |
| 7 namespace media { | 7 namespace media { |
| 8 | 8 |
| 9 BitReader::BitReader(const uint8* data, int size) | 9 BitReader::BitReader(const uint8_t* data, int size) |
| 10 : initial_size_(size), | 10 : initial_size_(size), |
| 11 data_(data), | 11 data_(data), |
| 12 bytes_left_(size), | 12 bytes_left_(size), |
| 13 bit_reader_core_(this) { | 13 bit_reader_core_(this) { |
| 14 DCHECK(data != NULL); | 14 DCHECK(data != NULL); |
| 15 DCHECK_GE(size, 0); | 15 DCHECK_GE(size, 0); |
| 16 } | 16 } |
| 17 | 17 |
| 18 BitReader::~BitReader() {} | 18 BitReader::~BitReader() {} |
| 19 | 19 |
| 20 int BitReader::GetBytes(int max_nbytes, const uint8** out) { | 20 int BitReader::GetBytes(int max_nbytes, const uint8_t** out) { |
| 21 DCHECK_GE(max_nbytes, 0); | 21 DCHECK_GE(max_nbytes, 0); |
| 22 DCHECK(out); | 22 DCHECK(out); |
| 23 | 23 |
| 24 int nbytes = max_nbytes; | 24 int nbytes = max_nbytes; |
| 25 if (nbytes > bytes_left_) | 25 if (nbytes > bytes_left_) |
| 26 nbytes = bytes_left_; | 26 nbytes = bytes_left_; |
| 27 | 27 |
| 28 *out = data_; | 28 *out = data_; |
| 29 data_ += nbytes; | 29 data_ += nbytes; |
| 30 bytes_left_ -= nbytes; | 30 bytes_left_ -= nbytes; |
| 31 return nbytes; | 31 return nbytes; |
| 32 } | 32 } |
| 33 | 33 |
| 34 } // namespace media | 34 } // namespace media |
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