1 /* 2 ** 3 ** Copyright 2012, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 #ifndef INCLUDING_FROM_AUDIOFLINGER_H 19 #error This header file should only be included from AudioFlinger.h 20 #endif 21 22 // record track 23 class RecordTrack : public TrackBase { 24 public: 25 RecordTrack(RecordThread *thread, 26 const sp<Client>& client, 27 uint32_t sampleRate, 28 audio_format_t format, 29 audio_channel_mask_t channelMask, 30 size_t frameCount, 31 int sessionId); 32 virtual ~RecordTrack(); 33 34 virtual status_t start(AudioSystem::sync_event_t event, int triggerSession); 35 virtual void stop(); 36 37 void destroy(); 38 39 void invalidate(); 40 // clear the buffer overflow flag 41 void clearOverflow() { mOverflow = false; } 42 // set the buffer overflow flag and return previous value 43 bool setOverflow() { bool tmp = mOverflow; mOverflow = true; 44 return tmp; } 45 46 static void appendDumpHeader(String8& result); 47 void dump(char* buffer, size_t size); 48 49 private: 50 friend class AudioFlinger; // for mState 51 52 RecordTrack(const RecordTrack&); 53 RecordTrack& operator = (const RecordTrack&); 54 55 // AudioBufferProvider interface 56 virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, 57 int64_t pts = kInvalidPTS); 58 // releaseBuffer() not overridden 59 60 bool mOverflow; // overflow on most recent attempt to fill client buffer 61 AudioRecordServerProxy* mAudioRecordServerProxy; 62 }; 63
