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d00ce747c7
Bug: webrtc:12338 Change-Id: I02613d9fca45d00e2477f334b7a0416e7912e26b Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/227037 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34621}
60 lines
2.3 KiB
C++
60 lines
2.3 KiB
C++
/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_
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#define MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_
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#include <stdio.h>
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#include <string>
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#include "rtc_base/constructor_magic.h"
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namespace webrtc {
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namespace test {
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// Class for handling a looping input audio file.
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class InputAudioFile {
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public:
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explicit InputAudioFile(const std::string file_name, bool loop_at_end = true);
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virtual ~InputAudioFile();
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// Reads `samples` elements from source file to `destination`. Returns true
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// if the read was successful, otherwise false. If the file end is reached,
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// the file is rewound and reading continues from the beginning.
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// The output `destination` must have the capacity to hold `samples` elements.
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virtual bool Read(size_t samples, int16_t* destination);
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// Fast-forwards (`samples` > 0) or -backwards (`samples` < 0) the file by the
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// indicated number of samples. Just like Read(), Seek() starts over at the
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// beginning of the file if the end is reached. However, seeking backwards
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// past the beginning of the file is not possible.
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virtual bool Seek(int samples);
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// Creates a multi-channel signal from a mono signal. Each sample is repeated
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// `channels` times to create an interleaved multi-channel signal where all
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// channels are identical. The output `destination` must have the capacity to
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// hold samples * channels elements. Note that `source` and `destination` can
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// be the same array (i.e., point to the same address).
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static void DuplicateInterleaved(const int16_t* source,
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size_t samples,
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size_t channels,
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int16_t* destination);
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private:
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FILE* fp_;
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const bool loop_at_end_;
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RTC_DISALLOW_COPY_AND_ASSIGN(InputAudioFile);
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};
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} // namespace test
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} // namespace webrtc
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#endif // MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_
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