The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 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_IAUDIOTRACK_H |
| 18 | #define ANDROID_IAUDIOTRACK_H |
| 19 | |
| 20 | #include <stdint.h> |
| 21 | #include <sys/types.h> |
| 22 | |
| 23 | #include <utils/RefBase.h> |
| 24 | #include <utils/Errors.h> |
Mathias Agopian | 0795272 | 2009-05-19 19:08:10 -0700 | [diff] [blame] | 25 | #include <binder/IInterface.h> |
| 26 | #include <binder/IMemory.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 27 | |
| 28 | |
| 29 | namespace android { |
| 30 | |
| 31 | // ---------------------------------------------------------------------------- |
| 32 | |
| 33 | class IAudioTrack : public IInterface |
| 34 | { |
| 35 | public: |
| 36 | DECLARE_META_INTERFACE(AudioTrack); |
| 37 | |
| 38 | /* After it's created the track is not active. Call start() to |
| 39 | * make it active. If set, the callback will start being called. |
| 40 | */ |
| 41 | virtual status_t start() = 0; |
| 42 | |
| 43 | /* Stop a track. If set, the callback will cease being called and |
| 44 | * obtainBuffer will return an error. Buffers that are already released |
| 45 | * will be processed, unless flush() is called. |
| 46 | */ |
| 47 | virtual void stop() = 0; |
| 48 | |
| 49 | /* flush a stopped track. All pending buffers are discarded. |
| 50 | * This function has no effect if the track is not stoped. |
| 51 | */ |
| 52 | virtual void flush() = 0; |
| 53 | |
| 54 | /* mute or unmutes this track. |
| 55 | * While mutted, the callback, if set, is still called. |
| 56 | */ |
| 57 | virtual void mute(bool) = 0; |
| 58 | |
| 59 | /* Pause a track. If set, the callback will cease being called and |
| 60 | * obtainBuffer will return an error. Buffers that are already released |
| 61 | * will be processed, unless flush() is called. |
| 62 | */ |
| 63 | virtual void pause() = 0; |
| 64 | |
Eric Laurent | 65b6545 | 2010-06-01 23:49:17 -0700 | [diff] [blame^] | 65 | /* Attach track auxiliary output to specified effect. Use effectId = 0 |
| 66 | * to detach track from effect. |
| 67 | */ |
| 68 | virtual status_t attachAuxEffect(int effectId) = 0; |
| 69 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 70 | /* get this tracks control block */ |
| 71 | virtual sp<IMemory> getCblk() const = 0; |
| 72 | }; |
| 73 | |
| 74 | // ---------------------------------------------------------------------------- |
| 75 | |
| 76 | class BnAudioTrack : public BnInterface<IAudioTrack> |
| 77 | { |
| 78 | public: |
| 79 | virtual status_t onTransact( uint32_t code, |
| 80 | const Parcel& data, |
| 81 | Parcel* reply, |
| 82 | uint32_t flags = 0); |
| 83 | }; |
| 84 | |
| 85 | // ---------------------------------------------------------------------------- |
| 86 | |
| 87 | }; // namespace android |
| 88 | |
| 89 | #endif // ANDROID_IAUDIOTRACK_H |