1 /* 2 * Copyright 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef MMC_CODEC_CLIENT_CODEC_CLIENT_H_ 18 #define MMC_CODEC_CLIENT_CODEC_CLIENT_H_ 19 20 #include <dbus/object_proxy.h> 21 #include <stdint.h> 22 23 #include <memory> 24 25 #include "mmc/metrics/mmc_rtt_logger.h" 26 #include "mmc/mmc_interface/mmc_interface.h" 27 #include "mmc/proto/mmc_service.pb.h" 28 29 namespace mmc { 30 31 // Implementation of MmcInterface. 32 // CodecClient serves as proxy of MMC codec service. 33 class CodecClient : public MmcInterface { 34 public: 35 // Connects to DBus. 36 explicit CodecClient(); 37 38 // Calls |cleanup|. 39 ~CodecClient(); 40 41 // CodecClient is neither copyable nor movable. 42 CodecClient(const CodecClient&) = delete; 43 CodecClient& operator=(const CodecClient&) = delete; 44 45 // Calls MMC DBus method |CodecInit| with |CodecInitRequest|, opens the socket 46 // for transcoding. 47 // 48 // Returns: 49 // Input frame size accepted by the transcoder, if init succeeded. 50 // Negative errno on error, otherwise. 51 int init(const ConfigParam config) override; 52 53 // Closes the socket, and calls MMC DBus method |CodecCleanUp|. 54 void cleanup() override; 55 56 // Transfers PCM data between caller and the MMC codec service. 57 // 58 // Returns: 59 // Transcoded data length, if transcode succeeded. 60 // Negative errno on error, otherwise. 61 int transcode(uint8_t* i_buf, int i_len, uint8_t* o_buf, int o_len) override; 62 63 private: 64 int skt_fd_; 65 dbus::ObjectProxy* codec_manager_; // Owned by the Bus object. 66 scoped_refptr<dbus::Bus> bus_; 67 std::unique_ptr<MmcRttLogger> record_logger_; 68 }; 69 70 } // namespace mmc 71 72 #endif // MMC_CODEC_CLIENT_CODEC_CLIENT_H_ 73