1 /* 2 * Copyright (c) 2023-2025 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_CONVERTER_3DA 16 #define AUDIO_CONVERTER_3DA 17 18 #include <cstdint> 19 #include <cstring> 20 #include <string> 21 #include <dlfcn.h> 22 #include <unistd.h> 23 #include "audio_effect.h" 24 #include "audio_service_log.h" 25 26 namespace OHOS { 27 namespace AudioStandard { 28 29 class LibLoader { 30 public: 31 LibLoader() = default; 32 ~LibLoader(); 33 bool Init(); 34 uint32_t GetLatency(); 35 bool AddAlgoHandle(Library lib); 36 void SetIOBufferConfig(bool isInput, uint32_t sampleRate, uint8_t format, uint32_t channels, 37 uint64_t channelLayout); 38 int32_t ApplyAlgo(AudioBuffer &inputBuffer, AudioBuffer &outputBuffer); 39 bool FlushAlgo(); 40 41 private: 42 bool LoadLibrary(const std::string &relativePath) noexcept; 43 std::unique_ptr<AudioEffectLibEntry> libEntry_; 44 uint32_t latency_; 45 AudioEffectHandle handle_; 46 AudioEffectConfig ioBufferConfig_; 47 void *libHandle_; 48 }; 49 50 class AudioSpatialChannelConverter { 51 public: 52 AudioSpatialChannelConverter() = default; 53 bool Init(const AudioStreamParams info, const ConverterConfig cfg); 54 bool GetInputBufferSize(size_t &bufferSize); 55 size_t GetMetaSize(); 56 bool CheckInputValid(const BufferDesc bufDesc); 57 bool AllocateMem(); 58 bool Flush(); 59 uint32_t GetLatency(); 60 void Process(const BufferDesc bufDesc); 61 void ConverterChannels(uint8_t &channel, uint64_t &channelLayout); 62 void GetOutputBufferStream(uint8_t *&buffer, uint32_t &bufferLen); 63 64 private: 65 size_t GetPcmLength(int32_t channels, int8_t bps); 66 67 std::unique_ptr<uint8_t[]> outPcmBuf_; 68 69 int32_t inChannel_; 70 int32_t outChannel_; 71 int32_t sampleRate_; 72 73 uint8_t bps_; 74 uint8_t encoding_; 75 76 uint64_t outChannelLayout_; 77 78 bool loadSuccess_; 79 80 LibLoader externalLoader_; 81 }; 82 83 } // namespace AudioStandard 84 } // namespace OHOS 85 #endif // AUDIO_CONVERTER_3DA