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1 /* | 1 /* |
2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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27 explicit InputAudioFile(const std::string file_name); | 27 explicit InputAudioFile(const std::string file_name); |
28 | 28 |
29 virtual ~InputAudioFile(); | 29 virtual ~InputAudioFile(); |
30 | 30 |
31 // Reads |samples| elements from source file to |destination|. Returns true | 31 // Reads |samples| elements from source file to |destination|. Returns true |
32 // if the read was successful, otherwise false. If the file end is reached, | 32 // if the read was successful, otherwise false. If the file end is reached, |
33 // the file is rewound and reading continues from the beginning. | 33 // the file is rewound and reading continues from the beginning. |
34 // The output |destination| must have the capacity to hold |samples| elements. | 34 // The output |destination| must have the capacity to hold |samples| elements. |
35 virtual bool Read(size_t samples, int16_t* destination); | 35 virtual bool Read(size_t samples, int16_t* destination); |
36 | 36 |
| 37 // Fast-forwards (|samples| > 0) or -backwards (|samples| < 0) the file by the |
| 38 // indicated number of samples. Just like Read(), Seek() starts over at the |
| 39 // beginning of the file if the end is reached. However, seeking backwards |
| 40 // past the beginning of the file is not possible. |
| 41 virtual bool Seek(int samples); |
| 42 |
37 // Creates a multi-channel signal from a mono signal. Each sample is repeated | 43 // Creates a multi-channel signal from a mono signal. Each sample is repeated |
38 // |channels| times to create an interleaved multi-channel signal where all | 44 // |channels| times to create an interleaved multi-channel signal where all |
39 // channels are identical. The output |destination| must have the capacity to | 45 // channels are identical. The output |destination| must have the capacity to |
40 // hold samples * channels elements. Note that |source| and |destination| can | 46 // hold samples * channels elements. Note that |source| and |destination| can |
41 // be the same array (i.e., point to the same address). | 47 // be the same array (i.e., point to the same address). |
42 static void DuplicateInterleaved(const int16_t* source, size_t samples, | 48 static void DuplicateInterleaved(const int16_t* source, size_t samples, |
43 size_t channels, int16_t* destination); | 49 size_t channels, int16_t* destination); |
44 | 50 |
45 private: | 51 private: |
46 FILE* fp_; | 52 FILE* fp_; |
47 DISALLOW_COPY_AND_ASSIGN(InputAudioFile); | 53 DISALLOW_COPY_AND_ASSIGN(InputAudioFile); |
48 }; | 54 }; |
49 | 55 |
50 } // namespace test | 56 } // namespace test |
51 } // namespace webrtc | 57 } // namespace webrtc |
52 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_ | 58 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_ |
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