1 /* 2 * Copyright (c) 2024 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 16 #ifndef AUDIO_VOLUME_C_H 17 #define AUDIO_VOLUME_C_H 18 19 #include <inttypes.h> 20 21 #ifdef __cplusplus 22 extern "C" { 23 #endif 24 25 enum FadePauseState { 26 NO_FADE, 27 DO_FADE, 28 DONE_FADE, 29 INVALID_STATE 30 }; 31 32 enum FadeStrategy { 33 FADE_STRATEGY_DEFAULT, 34 35 // no fade-in, no fade-out 36 FADE_STRATEGY_NONE, 37 38 // do 5ms fade-in and fade-out 39 FADE_STRATEGY_SHORTER 40 }; 41 42 float GetCurVolume(uint32_t sessionId, const char *streamType, const char *deviceClass); 43 44 float GetStreamVolume(uint32_t sessionId); 45 46 float GetPreVolume(uint32_t sessionId); 47 48 void SetPreVolume(uint32_t sessionId, float volume); 49 50 void GetStreamVolumeFade(uint32_t sessionId, float *fadeBegin, float *fadeEnd); 51 52 void SetStreamVolumeFade(uint32_t sessionId, float fadeBegin, float fadeEnd); 53 54 bool IsSameVolume(float volumeA, float volumeB); 55 56 void MonitorVolume(uint32_t sessionId, bool isOutput); 57 58 void SetFadeoutState(uint32_t streamIndex, uint32_t fadeoutState); 59 60 uint32_t GetFadeoutState(uint32_t streamIndex); 61 62 uint32_t GetStopFadeoutState(uint32_t streamIndex); 63 64 void RemoveStopFadeoutState(uint32_t streamIndex); 65 66 int32_t GetSimpleBufferAvg(uint8_t *buffer, int32_t length); 67 68 enum FadeStrategy GetFadeStrategy(uint64_t expectedPlaybackDurationMs); 69 70 #ifdef __cplusplus 71 } 72 #endif 73 74 #endif // AUDIO_VOLUME_C_H