1 /* 2 * Copyright 2016 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 LEGACY_AUDIO_STREAM_RECORD_H 18 #define LEGACY_AUDIO_STREAM_RECORD_H 19 20 #include <media/AudioRecord.h> 21 #include <aaudio/AAudio.h> 22 23 #include "AudioStreamBuilder.h" 24 #include "AudioStream.h" 25 #include "AAudioLegacy.h" 26 #include "legacy/AudioStreamLegacy.h" 27 #include "utility/FixedBlockWriter.h" 28 29 namespace aaudio { 30 31 /** 32 * Internal stream that uses the legacy AudioRecord path. 33 */ 34 class AudioStreamRecord : public AudioStreamLegacy { 35 public: 36 AudioStreamRecord(); 37 38 virtual ~AudioStreamRecord(); 39 40 aaudio_result_t open(const AudioStreamBuilder & builder) override; 41 aaudio_result_t close() override; 42 43 aaudio_result_t requestStart() override; 44 aaudio_result_t requestStop() override; 45 46 virtual aaudio_result_t getTimestamp(clockid_t clockId, 47 int64_t *framePosition, 48 int64_t *timeNanoseconds) override; 49 50 aaudio_result_t read(void *buffer, 51 int32_t numFrames, 52 int64_t timeoutNanoseconds) override; 53 54 aaudio_result_t setBufferSize(int32_t requestedFrames) override; 55 56 int32_t getBufferSize() const override; 57 58 int32_t getBufferCapacity() const override; 59 60 int32_t getXRunCount() const override; 61 62 int64_t getFramesWritten() override; 63 64 int32_t getFramesPerBurst() const override; 65 66 aaudio_result_t updateStateMachine() override; 67 getDirection()68 aaudio_direction_t getDirection() const override { 69 return AAUDIO_DIRECTION_INPUT; 70 } 71 72 // This is public so it can be called from the C callback function. 73 void processCallback(int event, void *info) override; 74 incrementClientFrameCounter(int32_t frames)75 int64_t incrementClientFrameCounter(int32_t frames) override { 76 return incrementFramesRead(frames); 77 } 78 79 const void * maybeConvertDeviceData(const void *audioData, int32_t numFrames) override; 80 81 private: 82 android::sp<android::AudioRecord> mAudioRecord; 83 // adapts between variable sized blocks and fixed size blocks 84 FixedBlockWriter mFixedBlockWriter; 85 86 // TODO add 64-bit position reporting to AudioRecord and use it. 87 android::String16 mOpPackageName; 88 89 // Only one type of conversion buffer is used. 90 std::unique_ptr<float[]> mFormatConversionBufferFloat; 91 std::unique_ptr<int16_t[]> mFormatConversionBufferI16; 92 int32_t mFormatConversionBufferSizeInFrames = 0; 93 }; 94 95 } /* namespace aaudio */ 96 97 #endif /* LEGACY_AUDIO_STREAM_RECORD_H */ 98