| /* |
| * 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 MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_ |
| #define MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_ |
| |
| #include <stdio.h> |
| |
| #include <string> |
| |
| namespace webrtc { |
| namespace test { |
| |
| // Class for handling a looping input audio file. |
| class InputAudioFile { |
| public: |
| explicit InputAudioFile(std::string file_name, bool loop_at_end = true); |
| |
| virtual ~InputAudioFile(); |
| |
| InputAudioFile(const InputAudioFile&) = delete; |
| InputAudioFile& operator=(const InputAudioFile&) = delete; |
| |
| // 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_; |
| const bool loop_at_end_; |
| }; |
| |
| } // namespace test |
| } // namespace webrtc |
| #endif // MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_ |