1 /* 2 * Copyright (c) 2022 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_UTILS_H 16 #define AUDIO_UTILS_H 17 18 #include <cstdint> 19 20 namespace OHOS { 21 namespace AudioStandard { 22 int64_t GetNowTimeMs(); 23 int64_t GetNowTimeUs(); 24 void AdjustStereoToMonoForPCM8Bit(int8_t *data, uint64_t len); 25 void AdjustStereoToMonoForPCM16Bit(int16_t *data, uint64_t len); 26 void AdjustStereoToMonoForPCM24Bit(int8_t *data, uint64_t len); 27 void AdjustStereoToMonoForPCM32Bit(int32_t *data, uint64_t len); 28 void AdjustAudioBalanceForPCM8Bit(int8_t *data, uint64_t len, float left, float right); 29 void AdjustAudioBalanceForPCM16Bit(int16_t *data, uint64_t len, float left, float right); 30 void AdjustAudioBalanceForPCM24Bit(int8_t *data, uint64_t len, float left, float right); 31 void AdjustAudioBalanceForPCM32Bit(int32_t *data, uint64_t len, float left, float right); 32 33 template <typename T> 34 bool GetSysPara(const char *key, T &value); 35 } // namespace AudioStandard 36 } // namespace OHOS 37 #endif // AUDIO_UTILS_H 38