1 /* 2 * Copyright (C) 2022 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 #ifndef SL_PREFETCHEVENT_NONE // This is defined in slesl_allinclusive, which isn't guarded 20 #include "sles_allinclusive.h" 21 #endif 22 23 #include "media/AudioTrack.h" 24 25 void audioPlayer_dispatch_headAtEnd_lockPlay(CAudioPlayer*, bool, bool); 26 27 void audioTrack_handleUnderrun_lockPlay(CAudioPlayer* ap); 28 void audioTrack_handleMarker_lockPlay(CAudioPlayer* ap); 29 void audioTrack_handleNewPos_lockPlay(CAudioPlayer* ap); 30 size_t audioTrack_handleMoreData_lockPlay(CAudioPlayer* ap, 31 const android::AudioTrack::Buffer& buffer); 32 //-------------------------------------------------------------------------------------------------- 33 namespace android { 34 class AudioTrackCallback : public AudioTrack::IAudioTrackCallback { 35 public: AudioTrackCallback(CAudioPlayer * player)36 AudioTrackCallback(CAudioPlayer * player) : mAp(player), 37 mCallbackProtector(mAp->mCallbackProtector) {} 38 onMoreData(const AudioTrack::Buffer & buffer)39 size_t onMoreData(const AudioTrack::Buffer& buffer) override { 40 if (!android::CallbackProtector::enterCbIfOk(mCallbackProtector)) { 41 // it is not safe to enter the callback (the track is about to go away) 42 return buffer.size(); // duplicate existing behavior 43 } 44 size_t bytesCopied = audioTrack_handleMoreData_lockPlay(mAp, buffer); 45 mCallbackProtector->exitCb(); 46 return bytesCopied; 47 } 48 onUnderrun()49 void onUnderrun() override { 50 if (!android::CallbackProtector::enterCbIfOk(mCallbackProtector)) { 51 // it is not safe to enter the callback (the track is about to go away) 52 return; 53 } 54 audioTrack_handleUnderrun_lockPlay(mAp); 55 mCallbackProtector->exitCb(); 56 } 57 onLoopEnd(int32_t loopsRemaining)58 void onLoopEnd([[maybe_unused]] int32_t loopsRemaining) override { 59 SL_LOGE("Encountered loop end for CAudioPlayer %p", mAp); 60 } onMarker(uint32_t markerPosition)61 void onMarker([[maybe_unused]] uint32_t markerPosition) override { 62 if (!android::CallbackProtector::enterCbIfOk(mCallbackProtector)) { 63 // it is not safe to enter the callback (the track is about to go away) 64 return; 65 } 66 audioTrack_handleMarker_lockPlay(mAp); 67 mCallbackProtector->exitCb(); 68 } 69 onNewPos(uint32_t newPos)70 void onNewPos([[maybe_unused]] uint32_t newPos) override { 71 if (!android::CallbackProtector::enterCbIfOk(mCallbackProtector)) { 72 // it is not safe to enter the callback (the track is about to go away) 73 return; 74 } 75 audioTrack_handleNewPos_lockPlay(mAp); 76 mCallbackProtector->exitCb(); 77 } onBufferEnd()78 void onBufferEnd() override { 79 SL_LOGE("Encountered buffer end for CAudioPlayer %p", mAp); 80 } 81 // Ignore onNewIAudioTrack()82 void onNewIAudioTrack() override {} onStreamEnd()83 void onStreamEnd() override { 84 SL_LOGE("Encountered buffer end for CAudioPlayer %p", mAp); 85 } onNewTimestamp(AudioTimestamp timestamp)86 void onNewTimestamp([[maybe_unused]] AudioTimestamp timestamp) { 87 SL_LOGE("Encountered write more data for CAudioPlayer %p", mAp); 88 } onCanWriteMoreData(const AudioTrack::Buffer & buffer)89 size_t onCanWriteMoreData([[maybe_unused]] const AudioTrack::Buffer& buffer) { 90 SL_LOGE("Encountered write more data for CAudioPlayer %p", mAp); 91 return 0; 92 } 93 94 private: 95 AudioTrackCallback(const AudioTrackCallback&) = delete; 96 AudioTrackCallback& operator=(const AudioTrackCallback&) = delete; 97 CAudioPlayer* const mAp; 98 const sp<CallbackProtector> mCallbackProtector; 99 }; 100 } // namespace android 101