webrtc/modules/audio_coding/neteq/tools/audio_loop.h
Yves Gerey 665174fdbb Reformat the WebRTC code base
Running clang-format with chromium's style guide.

The goal is n-fold:
 * providing consistency and readability (that's what code guidelines are for)
 * preventing noise with presubmit checks and git cl format
 * building on the previous point: making it easier to automatically fix format issues
 * you name it

Please consider using git-hyper-blame to ignore this commit.

Bug: webrtc:9340
Change-Id: I694567c4cdf8cee2860958cfe82bfaf25848bb87
Reviewed-on: https://webrtc-review.googlesource.com/81185
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23660}
2018-06-19 14:00:39 +00:00

57 lines
1.9 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"
#include "rtc_base/constructormagic.h"
#include "typedefs.h" // NOLINT(build/include)
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() {}
// 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(const 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_;
RTC_DISALLOW_COPY_AND_ASSIGN(AudioLoop);
};
} // namespace test
} // namespace webrtc
#endif // MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_LOOP_H_