1 /*
2  * Copyright (c) 2023 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 #ifndef AUDIO_SPEED_H
16 #define AUDIO_SPEED_H
17 
18 #include <cstdint>
19 #include <string>
20 
21 #include "sonic.h"
22 #include "audio_info.h"
23 namespace OHOS {
24 namespace AudioStandard {
25 
26 class AudioSpeed {
27 public:
28     AudioSpeed();
29     AudioSpeed(size_t rate, size_t format, size_t channels);
30 
31     ~AudioSpeed();
32     int32_t Init();
33     int32_t LoadChangeSpeedFunc();
34     int32_t SetSpeed(float speed);
35     float GetSpeed();
36 
37     int32_t ChangeSpeedFor8Bit(uint8_t *buffer, int32_t bufferSize,
38         std::unique_ptr<uint8_t []> &outBuffer, int32_t &outBufferSize);
39     int32_t ChangeSpeedFor16Bit(uint8_t *buffer, int32_t bufferSize,
40         std::unique_ptr<uint8_t []> &outBuffer, int32_t &outBufferSize);
41     int32_t ChangeSpeedFor24Bit(uint8_t *buffer, int32_t bufferSize,
42         std::unique_ptr<uint8_t []> &outBuffer, int32_t &outBufferSize);
43     int32_t ChangeSpeedFor32Bit(uint8_t *buffer, int32_t bufferSize,
44         std::unique_ptr<uint8_t []> &outBuffer, int32_t &outBufferSize);
45     int32_t ChangeSpeedForFloat(float *buffer, int32_t bufferSize, float* outBuffer, int32_t &outBufferSize);
46 
47     std::function<int32_t(uint8_t *, int32_t, std::unique_ptr<uint8_t []>&, int32_t&)> ChangeSpeedFunc;
48 
49     int32_t ChangeSpeed(uint8_t *buffer, int32_t bufferSize,
50         std::unique_ptr<uint8_t []> &outBuffer, int32_t &outBufferSize);
51 private:
52     float speed_ = 0.0f;
53     size_t rate_;
54     size_t format_;
55 
56     std::unique_ptr<uint8_t[]> speedBuffer_ = nullptr;
57     int32_t speedBufferSize_ = 0;
58     AudioStreamParams streamParam_;
59     size_t formatSize_ = 1;
60     size_t channels_ = 2;
61     sonicStream sonicStream_ = nullptr;
62 };
63 } // namespace AudioStandard
64 } // namespace OHOS
65 #endif // AUDIO_SPEED_H