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_IAUDIOFLINGER_H |
| 18 | #define ANDROID_IAUDIOFLINGER_H |
| 19 | |
| 20 | #include <stdint.h> |
| 21 | #include <sys/types.h> |
| 22 | #include <unistd.h> |
| 23 | |
| 24 | #include <utils/RefBase.h> |
| 25 | #include <utils/Errors.h> |
Mathias Agopian | 0795272 | 2009-05-19 19:08:10 -0700 | [diff] [blame^] | 26 | #include <binder/IInterface.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 27 | #include <media/IAudioTrack.h> |
| 28 | #include <media/IAudioRecord.h> |
| 29 | #include <media/IAudioFlingerClient.h> |
| 30 | |
| 31 | |
| 32 | namespace android { |
| 33 | |
| 34 | // ---------------------------------------------------------------------------- |
| 35 | |
| 36 | class IAudioFlinger : public IInterface |
| 37 | { |
| 38 | public: |
| 39 | DECLARE_META_INTERFACE(AudioFlinger); |
| 40 | |
| 41 | /* create an audio track and registers it with AudioFlinger. |
| 42 | * return null if the track cannot be created. |
| 43 | */ |
| 44 | virtual sp<IAudioTrack> createTrack( |
| 45 | pid_t pid, |
| 46 | int streamType, |
| 47 | uint32_t sampleRate, |
| 48 | int format, |
| 49 | int channelCount, |
| 50 | int frameCount, |
| 51 | uint32_t flags, |
| 52 | const sp<IMemory>& sharedBuffer, |
| 53 | status_t *status) = 0; |
| 54 | |
| 55 | virtual sp<IAudioRecord> openRecord( |
| 56 | pid_t pid, |
| 57 | int streamType, |
| 58 | uint32_t sampleRate, |
| 59 | int format, |
| 60 | int channelCount, |
| 61 | int frameCount, |
| 62 | uint32_t flags, |
| 63 | status_t *status) = 0; |
| 64 | |
| 65 | /* query the audio hardware state. This state never changes, |
| 66 | * and therefore can be cached. |
| 67 | */ |
| 68 | virtual uint32_t sampleRate(int output) const = 0; |
| 69 | virtual int channelCount(int output) const = 0; |
| 70 | virtual int format(int output) const = 0; |
| 71 | virtual size_t frameCount(int output) const = 0; |
| 72 | virtual uint32_t latency(int output) const = 0; |
| 73 | |
| 74 | /* set/get the audio hardware state. This will probably be used by |
| 75 | * the preference panel, mostly. |
| 76 | */ |
| 77 | virtual status_t setMasterVolume(float value) = 0; |
| 78 | virtual status_t setMasterMute(bool muted) = 0; |
| 79 | |
| 80 | virtual float masterVolume() const = 0; |
| 81 | virtual bool masterMute() const = 0; |
| 82 | |
| 83 | /* set/get stream type state. This will probably be used by |
| 84 | * the preference panel, mostly. |
| 85 | */ |
| 86 | virtual status_t setStreamVolume(int stream, float value) = 0; |
| 87 | virtual status_t setStreamMute(int stream, bool muted) = 0; |
| 88 | |
| 89 | virtual float streamVolume(int stream) const = 0; |
| 90 | virtual bool streamMute(int stream) const = 0; |
| 91 | |
| 92 | // set/get audio routing |
| 93 | virtual status_t setRouting(int mode, uint32_t routes, uint32_t mask) = 0; |
| 94 | virtual uint32_t getRouting(int mode) const = 0; |
| 95 | |
| 96 | // set/get audio mode |
| 97 | virtual status_t setMode(int mode) = 0; |
| 98 | virtual int getMode() const = 0; |
| 99 | |
| 100 | // mic mute/state |
| 101 | virtual status_t setMicMute(bool state) = 0; |
| 102 | virtual bool getMicMute() const = 0; |
| 103 | |
| 104 | // is a music stream active? |
| 105 | virtual bool isMusicActive() const = 0; |
| 106 | |
| 107 | // pass a generic configuration parameter to libaudio |
| 108 | // Temporary interface, do not use |
| 109 | // TODO: Replace with a more generic key:value get/set mechanism |
| 110 | virtual status_t setParameter(const char* key, const char* value) = 0; |
| 111 | |
| 112 | // register a current process for audio output change notifications |
| 113 | virtual void registerClient(const sp<IAudioFlingerClient>& client) = 0; |
| 114 | |
| 115 | // retrieve the audio recording buffer size |
| 116 | virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount) = 0; |
| 117 | |
| 118 | // force AudioFlinger thread out of standby |
| 119 | virtual void wakeUp() = 0; |
| 120 | |
| 121 | // is A2DP output enabled |
| 122 | virtual bool isA2dpEnabled() const = 0; |
| 123 | }; |
| 124 | |
| 125 | |
| 126 | // ---------------------------------------------------------------------------- |
| 127 | |
| 128 | class BnAudioFlinger : public BnInterface<IAudioFlinger> |
| 129 | { |
| 130 | public: |
| 131 | virtual status_t onTransact( uint32_t code, |
| 132 | const Parcel& data, |
| 133 | Parcel* reply, |
| 134 | uint32_t flags = 0); |
| 135 | }; |
| 136 | |
| 137 | // ---------------------------------------------------------------------------- |
| 138 | |
| 139 | }; // namespace android |
| 140 | |
| 141 | #endif // ANDROID_IAUDIOFLINGER_H |