1 /* 2 * Copyright (C) 2017 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 ANDROID_AAUDIO_AUDIO_STREAM_INTERNAL_PLAY_H 18 #define ANDROID_AAUDIO_AUDIO_STREAM_INTERNAL_PLAY_H 19 20 #include <stdint.h> 21 #include <aaudio/AAudio.h> 22 23 #include "binding/AAudioServiceInterface.h" 24 #include "client/AudioStreamInternal.h" 25 26 using android::sp; 27 28 namespace aaudio { 29 30 class AudioStreamInternalPlay : public AudioStreamInternal { 31 public: 32 explicit AudioStreamInternalPlay(AAudioServiceInterface &serviceInterface, 33 bool inService = false); 34 virtual ~AudioStreamInternalPlay() = default; 35 36 aaudio_result_t open(const AudioStreamBuilder &builder) override; 37 38 aaudio_result_t requestPause_l() override; 39 40 aaudio_result_t requestFlush_l() override; 41 isFlushSupported()42 bool isFlushSupported() const override { 43 // Only implement FLUSH for OUTPUT streams. 44 return true; 45 } 46 isPauseSupported()47 bool isPauseSupported() const override { 48 // Only implement PAUSE for OUTPUT streams. 49 return true; 50 } 51 52 aaudio_result_t write(const void *buffer, 53 int32_t numFrames, 54 int64_t timeoutNanoseconds) override; 55 56 int64_t getFramesRead() override; 57 int64_t getFramesWritten() override; 58 59 void *callbackLoop() override; 60 getDirection()61 aaudio_direction_t getDirection() const override { 62 return AAUDIO_DIRECTION_OUTPUT; 63 } 64 65 protected: 66 67 void prepareBuffersForStart() override; 68 69 void prepareBuffersForStop() override; 70 71 void advanceClientToMatchServerPosition(int32_t serverMargin) override; 72 73 void onFlushFromServer() override; 74 75 android::status_t doSetVolume() override; 76 77 /** 78 * Low level write that will not block. It will just write as much as it can. 79 * 80 * It passed back a recommended time to wake up if wakeTimePtr is not NULL. 81 * 82 * @return the number of frames written or a negative error code. 83 */ 84 aaudio_result_t processDataNow(void *buffer, 85 int32_t numFrames, 86 int64_t currentTimeNanos, 87 int64_t *wakeTimePtr) override; 88 private: 89 /* 90 * Asynchronous write with data conversion. 91 * @param buffer 92 * @param numFrames 93 * @return frames written or negative error 94 */ 95 aaudio_result_t writeNowWithConversion(const void *buffer, 96 int32_t numFrames); 97 98 }; 99 100 } /* namespace aaudio */ 101 102 #endif //ANDROID_AAUDIO_AUDIO_STREAM_INTERNAL_PLAY_H 103