1 /* 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. 3 * 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 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_ 12 #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_ 13 14 #include <stdio.h> 15 16 #include <string> 17 18 #include "webrtc/base/constructormagic.h" 19 #include "webrtc/typedefs.h" 20 21 namespace webrtc { 22 namespace test { 23 24 // Class for handling a looping input audio file. 25 class InputAudioFile { 26 public: 27 explicit InputAudioFile(const std::string file_name); 28 29 virtual ~InputAudioFile(); 30 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, 33 // the file is rewound and reading continues from the beginning. 34 // The output |destination| must have the capacity to hold |samples| elements. 35 bool Read(size_t samples, int16_t* destination); 36 37 // 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 39 // channels are identical. The output |destination| must have the capacity to 40 // hold samples * channels elements. Note that |source| and |destination| can 41 // be the same array (i.e., point to the same address). 42 static void DuplicateInterleaved(const int16_t* source, size_t samples, 43 size_t channels, int16_t* destination); 44 45 private: 46 FILE* fp_; 47 DISALLOW_COPY_AND_ASSIGN(InputAudioFile); 48 }; 49 50 } // namespace test 51 } // namespace webrtc 52 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_ 53
