| /* |
| * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_ |
| #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_ |
| |
| #include <stdio.h> |
| |
| #include <string> |
| |
| #include "webrtc/base/constructormagic.h" |
| #include "webrtc/typedefs.h" |
| |
| namespace webrtc { |
| namespace test { |
| |
| // Class for handling a looping input audio file. |
| class InputAudioFile { |
| public: |
| explicit InputAudioFile(const std::string file_name); |
| |
| virtual ~InputAudioFile(); |
| |
| // Reads |samples| elements from source file to |destination|. Returns true |
| // if the read was successful, otherwise false. If the file end is reached, |
| // the file is rewound and reading continues from the beginning. |
| // The output |destination| must have the capacity to hold |samples| elements. |
| virtual bool Read(size_t samples, int16_t* destination); |
| |
| // Fast-forwards (|samples| > 0) or -backwards (|samples| < 0) the file by the |
| // indicated number of samples. Just like Read(), Seek() starts over at the |
| // beginning of the file if the end is reached. However, seeking backwards |
| // past the beginning of the file is not possible. |
| virtual bool Seek(int samples); |
| |
| // Creates a multi-channel signal from a mono signal. Each sample is repeated |
| // |channels| times to create an interleaved multi-channel signal where all |
| // channels are identical. The output |destination| must have the capacity to |
| // hold samples * channels elements. Note that |source| and |destination| can |
| // be the same array (i.e., point to the same address). |
| static void DuplicateInterleaved(const int16_t* source, size_t samples, |
| size_t channels, int16_t* destination); |
| |
| private: |
| FILE* fp_; |
| RTC_DISALLOW_COPY_AND_ASSIGN(InputAudioFile); |
| }; |
| |
| } // namespace test |
| } // namespace webrtc |
| #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_ |