1 /*
2  * Copyright (C) 2012 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
5  * use this file except in compliance with the License. You may obtain a copy of
6  * 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, WITHOUT
12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13  * License for the specific language governing permissions and limitations under
14  * the License.
15  */
16 
17 
18 #ifndef CTSAUDIO_AUDIOPLAYBACKLOCAL_H
19 #define CTSAUDIO_AUDIOPLAYBACKLOCAL_H
20 
21 #include <utils/String8.h>
22 
23 #include <tinyalsa/asoundlib.h>
24 
25 #include "AudioLocal.h"
26 
27 
28 class AudioPlaybackLocal: public AudioLocal {
29 public:
30     explicit AudioPlaybackLocal(int hwId);
31     virtual ~AudioPlaybackLocal();
32 protected:
33     bool doPrepare(AudioHardware::SamplingRate, int samplesInOneGo);
34     bool doPlaybackOrRecord(android::sp<Buffer>& buffer);
35     void doStop();
36     void releaseHw();
37 
38 private:
39     int mHwId;
40     struct pcm* mPcmHandle;
41     // unit playback samples
42     int mSamples;
43     // unit playback sizes
44     int mSizes;
45 };
46 
47 
48 #endif // CTSAUDIO_AUDIOPLAYBACKLOCAL_H
49