1 /* 2 * Copyright 2018, 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 #pragma once 18 19 #include <source/StreamingSource.h> 20 21 #include <memory> 22 #include <thread> 23 24 #define SIMULATE_AUDIO 0 25 26 namespace vsoc { 27 class RegionWorker; 28 namespace audio_data { 29 class AudioDataRegionView; 30 } 31 } 32 33 namespace android { 34 35 struct AudioSource : public StreamingSource { 36 using AudioDataRegionView = vsoc::audio_data::AudioDataRegionView; 37 38 enum class Format { 39 OPUS, 40 G711_ALAW, 41 G711_ULAW, 42 }; 43 // ADTS framing is only supported for AAC. 44 explicit AudioSource(Format format, bool useADTSFraming = false); 45 46 AudioSource(const AudioSource &) = delete; 47 AudioSource &operator=(const AudioSource &) = delete; 48 49 ~AudioSource() override; 50 51 int32_t initCheck() const override; 52 53 int32_t start() override; 54 int32_t stop() override; 55 56 int32_t requestIDRFrame() override; notifyNewStreamConsumerAudioSource57 void notifyNewStreamConsumer() override {} notifyStreamConsumerDisconnectedAudioSource58 void notifyStreamConsumerDisconnected() override {} 59 60 void inject(const void *data, size_t size); 61 62 private: 63 enum State { 64 STOPPING, 65 STOPPED, 66 RUNNING, 67 PAUSED 68 }; 69 70 struct Encoder; 71 struct OPUSEncoder; 72 struct G711Encoder; 73 74 int32_t mInitCheck; 75 State mState; 76 std::unique_ptr<Encoder> mEncoder; 77 78 std::mutex mLock; 79 std::unique_ptr<std::thread> mThread; 80 81 #if SIMULATE_AUDIO 82 static constexpr int32_t kSampleRate = 44100; 83 static constexpr int32_t kNumChannels = 2; 84 static constexpr size_t kNumFramesPerBuffer = 400; 85 static constexpr int32_t kFrequency = 500; 86 size_t mPhase; 87 #endif 88 }; 89 90 } // namespace android 91 92 93