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 16 #ifndef OHOS_AUDIO_CTRL_CHANNEL_H 17 #define OHOS_AUDIO_CTRL_CHANNEL_H 18 19 #include "nlohmann/json.hpp" 20 21 #include "iaudio_channel_listener.h" 22 #include "iaudio_channel.h" 23 #include "softbus_adapter.h" 24 25 using json = nlohmann::json; 26 27 namespace OHOS { 28 namespace DistributedHardware { 29 class AudioCtrlChannel : public IAudioChannel, 30 public ISoftbusListener, 31 public std::enable_shared_from_this<AudioCtrlChannel> { 32 public: AudioCtrlChannel(const std::string & peerDevId)33 explicit AudioCtrlChannel(const std::string &peerDevId) : peerDevId_(peerDevId) {}; 34 ~AudioCtrlChannel() override = default; 35 36 int32_t CreateSession(const std::shared_ptr<IAudioChannelListener> &listener, 37 const std::string &sessionName) override; 38 int32_t ReleaseSession() override; 39 int32_t OpenSession() override; 40 int32_t CloseSession() override; 41 int32_t SendData(const std::shared_ptr<AudioData> &audioData) override; 42 int32_t SendEvent(const AudioEvent &audioEvent) override; 43 44 void OnSessionOpened(int32_t sessionId, int32_t result) override; 45 void OnSessionClosed(int32_t sessionId) override; 46 void OnBytesReceived(int32_t sessionId, const void *data, uint32_t dataLen) override; 47 void OnStreamReceived(int32_t sessionId, const StreamData *data, const StreamData *ext, 48 const StreamFrameInfo *streamFrameInfo) override; 49 50 private: 51 int32_t SendMsg(string &message); 52 const int32_t MSG_MAX_SIZE = 45 * 1024; 53 const std::string peerDevId_; 54 int32_t sessionId_ = 0; 55 std::string sessionName_; 56 std::weak_ptr<IAudioChannelListener> channelListener_; 57 }; 58 59 int32_t from_audioEventJson(const json &j, AudioEvent &audioEvent); 60 } // namespace DistributedHardware 61 } // namespace OHOS 62 #endif // OHOS_AUDIO_CTRL_CHANNEL_H 63