webrtc/modules/audio_coding/neteq/tools/audio_loop.h
Ali Tofigh 62238097c9 Remove top-level const from parameters in function declarations.
This is a safe cleanup change since top-level const applied to
parameters in function declarations (that are not also
definitions) are ignored by the compiler. Hence, such changes do
not change the type of the declared functions and are simply
no-ops.

Bug: webrtc:13610
Change-Id: Ibafb92c45119a6d8bdb6f9109aa8dad6385163a9
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/249086
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Ali Tofigh <alito@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35802}
2022-01-26 11:05:25 +00:00

56 lines
1.8 KiB
C++

/*
* 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_AUDIO_LOOP_H_
#define MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_LOOP_H_
#include <memory>
#include <string>
#include "api/array_view.h"
namespace webrtc {
namespace test {
// Class serving as an infinite source of audio, realized by looping an audio
// clip.
class AudioLoop {
public:
AudioLoop()
: next_index_(0), loop_length_samples_(0), block_length_samples_(0) {}
virtual ~AudioLoop() {}
AudioLoop(const AudioLoop&) = delete;
AudioLoop& operator=(const AudioLoop&) = delete;
// Initializes the AudioLoop by reading from `file_name`. The loop will be no
// longer than `max_loop_length_samples`, if the length of the file is
// greater. Otherwise, the loop length is the same as the file length.
// The audio will be delivered in blocks of `block_length_samples`.
// Returns false if the initialization failed, otherwise true.
bool Init(std::string file_name,
size_t max_loop_length_samples,
size_t block_length_samples);
// Returns a (pointer,size) pair for the next block of audio. The size is
// equal to the `block_length_samples` Init() argument.
rtc::ArrayView<const int16_t> GetNextBlock();
private:
size_t next_index_;
size_t loop_length_samples_;
size_t block_length_samples_;
std::unique_ptr<int16_t[]> audio_array_;
};
} // namespace test
} // namespace webrtc
#endif // MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_LOOP_H_