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714e3cbb48
Bug: webrtc:13579 Change-Id: Ifec66fb6ba9724d18539de7245a358c2d13c7939 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/268547 Reviewed-by: Ivo Creusen <ivoc@webrtc.org> Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org> Commit-Queue: Ali Tofigh <alito@webrtc.org> Cr-Commit-Position: refs/heads/main@{#37573}
57 lines
1.9 KiB
C++
57 lines
1.9 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_AUDIO_LOOP_H_
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#define MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_LOOP_H_
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#include <memory>
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#include <string>
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#include "absl/strings/string_view.h"
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#include "api/array_view.h"
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namespace webrtc {
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namespace test {
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// Class serving as an infinite source of audio, realized by looping an audio
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// clip.
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class AudioLoop {
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public:
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AudioLoop()
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: next_index_(0), loop_length_samples_(0), block_length_samples_(0) {}
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virtual ~AudioLoop() {}
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AudioLoop(const AudioLoop&) = delete;
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AudioLoop& operator=(const AudioLoop&) = delete;
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// Initializes the AudioLoop by reading from `file_name`. The loop will be no
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// longer than `max_loop_length_samples`, if the length of the file is
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// greater. Otherwise, the loop length is the same as the file length.
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// The audio will be delivered in blocks of `block_length_samples`.
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// Returns false if the initialization failed, otherwise true.
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bool Init(absl::string_view file_name,
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size_t max_loop_length_samples,
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size_t block_length_samples);
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// Returns a (pointer,size) pair for the next block of audio. The size is
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// equal to the `block_length_samples` Init() argument.
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rtc::ArrayView<const int16_t> GetNextBlock();
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private:
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size_t next_index_;
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size_t loop_length_samples_;
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size_t block_length_samples_;
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std::unique_ptr<int16_t[]> audio_array_;
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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_AUDIO_LOOP_H_
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