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 struct VolumeValues { 26 float volumeSystem; 27 float volumeStream; 28 float volumeApp; 29 float volume; 30 float volumeHistory; 31 }; 32 33 enum FadePauseState { 34 NO_FADE, 35 DO_FADE, 36 DONE_FADE, 37 INVALID_STATE 38 }; 39 40 enum FadeStrategy { 41 FADE_STRATEGY_DEFAULT, 42 43 // no fade-in, no fade-out 44 FADE_STRATEGY_NONE, 45 46 // do 5ms fade-in and fade-out 47 FADE_STRATEGY_SHORTER 48 }; 49 50 float GetCurVolume(uint32_t sessionId, const char *streamType, const char *deviceClass, struct VolumeValues *volumes); 51 52 float GetStreamVolume(uint32_t sessionId); 53 54 float GetPreVolume(uint32_t sessionId); 55 56 void SetPreVolume(uint32_t sessionId, float volume); 57 58 bool IsSameVolume(float volumeA, float volumeB); 59 60 void MonitorVolume(uint32_t sessionId, bool isOutput); 61 62 void SetFadeoutState(uint32_t streamIndex, uint32_t fadeoutState); 63 64 uint32_t GetFadeoutState(uint32_t streamIndex); 65 66 uint32_t GetStopFadeoutState(uint32_t streamIndex); 67 68 void RemoveStopFadeoutState(uint32_t streamIndex); 69 70 int32_t GetSimpleBufferAvg(uint8_t *buffer, int32_t length); 71 72 enum FadeStrategy GetFadeStrategy(uint64_t expectedPlaybackDurationMs); 73 74 void SetOffloadType(uint32_t streamIndex, int32_t offloadType); 75 76 int32_t GetOffloadType(uint32_t streamIndex); 77 78 #ifdef __cplusplus 79 } 80 #endif 81 82 #endif // AUDIO_VOLUME_C_H