mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-19 06:27:30 +00:00
60 lines
1.9 KiB
C
60 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 WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_LOOP_H_
|
||
|
|
#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_LOOP_H_
|
||
|
|
|
||
|
|
#include <string>
|
||
|
|
|
||
|
|
#include "webrtc/base/constructormagic.h"
|
||
|
|
#include "webrtc/system_wrappers/interface/scoped_ptr.h"
|
||
|
|
#include "webrtc/typedefs.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() {}
|
||
|
|
|
||
|
|
// 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 to the next block of audio. The number given as
|
||
|
|
// |block_length_samples| to the Init() function determines how many samples
|
||
|
|
// that can be safely read from the pointer.
|
||
|
|
const int16_t* GetNextBlock();
|
||
|
|
|
||
|
|
private:
|
||
|
|
size_t next_index_;
|
||
|
|
size_t loop_length_samples_;
|
||
|
|
size_t block_length_samples_;
|
||
|
|
scoped_ptr<int16_t[]> audio_array_;
|
||
|
|
|
||
|
|
DISALLOW_COPY_AND_ASSIGN(AudioLoop);
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace test
|
||
|
|
} // namespace webrtc
|
||
|
|
#endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_AUDIO_LOOP_H_
|