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> 26 #include <binder/IInterface.h> 27 #include <media/IAudioTrack.h> 28 #include <media/IAudioRecord.h> 29 #include <media/IAudioFlingerClient.h> 30 #include <media/EffectApi.h> 31 #include <media/IEffect.h> 32 #include <media/IEffectClient.h> 33 #include <utils/String8.h> 34 35 namespace android { 36 37 // ---------------------------------------------------------------------------- 38 39 class IAudioFlinger : public IInterface 40 { 41 public: 42 DECLARE_META_INTERFACE(AudioFlinger); 43 44 /* create an audio track and registers it with AudioFlinger. 45 * return null if the track cannot be created. 46 */ 47 virtual sp<IAudioTrack> createTrack( 48 pid_t pid, 49 int streamType, 50 uint32_t sampleRate, 51 int format, 52 int channelCount, 53 int frameCount, 54 uint32_t flags, 55 const sp<IMemory>& sharedBuffer, 56 int output, 57 int *sessionId, 58 status_t *status) = 0; 59 60 virtual sp<IAudioRecord> openRecord( 61 pid_t pid, 62 int input, 63 uint32_t sampleRate, 64 int format, 65 int channelCount, 66 int frameCount, 67 uint32_t flags, 68 int *sessionId, 69 status_t *status) = 0; 70 71 /* query the audio hardware state. This state never changes, 72 * and therefore can be cached. 73 */ 74 virtual uint32_t sampleRate(int output) const = 0; 75 virtual int channelCount(int output) const = 0; 76 virtual int format(int output) const = 0; 77 virtual size_t frameCount(int output) const = 0; 78 virtual uint32_t latency(int output) const = 0; 79 80 /* set/get the audio hardware state. This will probably be used by 81 * the preference panel, mostly. 82 */ 83 virtual status_t setMasterVolume(float value) = 0; 84 virtual status_t setMasterMute(bool muted) = 0; 85 86 virtual float masterVolume() const = 0; 87 virtual bool masterMute() const = 0; 88 89 /* set/get stream type state. This will probably be used by 90 * the preference panel, mostly. 91 */ 92 virtual status_t setStreamVolume(int stream, float value, int output) = 0; 93 virtual status_t setStreamMute(int stream, bool muted) = 0; 94 95 virtual float streamVolume(int stream, int output) const = 0; 96 virtual bool streamMute(int stream) const = 0; 97 98 // set audio mode 99 virtual status_t setMode(int mode) = 0; 100 101 // mic mute/state 102 virtual status_t setMicMute(bool state) = 0; 103 virtual bool getMicMute() const = 0; 104 105 // is any track active on this stream? 106 virtual bool isStreamActive(int stream) const = 0; 107 108 virtual status_t setParameters(int ioHandle, const String8& keyValuePairs) = 0; 109 virtual String8 getParameters(int ioHandle, const String8& keys) = 0; 110 111 // register a current process for audio output change notifications 112 virtual void registerClient(const sp<IAudioFlingerClient>& client) = 0; 113 114 // retrieve the audio recording buffer size 115 virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount) = 0; 116 117 virtual int openOutput(uint32_t *pDevices, 118 uint32_t *pSamplingRate, 119 uint32_t *pFormat, 120 uint32_t *pChannels, 121 uint32_t *pLatencyMs, 122 uint32_t flags) = 0; 123 virtual int openDuplicateOutput(int output1, int output2) = 0; 124 virtual status_t closeOutput(int output) = 0; 125 virtual status_t suspendOutput(int output) = 0; 126 virtual status_t restoreOutput(int output) = 0; 127 128 virtual int openInput(uint32_t *pDevices, 129 uint32_t *pSamplingRate, 130 uint32_t *pFormat, 131 uint32_t *pChannels, 132 uint32_t acoustics) = 0; 133 virtual status_t closeInput(int input) = 0; 134 135 virtual status_t setStreamOutput(uint32_t stream, int output) = 0; 136 137 virtual status_t setVoiceVolume(float volume) = 0; 138 139 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output) = 0; 140 141 virtual unsigned int getInputFramesLost(int ioHandle) = 0; 142 143 virtual int newAudioSessionId() = 0; 144 145 virtual status_t loadEffectLibrary(const char *libPath, int *handle) = 0; 146 147 virtual status_t unloadEffectLibrary(int handle) = 0; 148 149 virtual status_t queryNumberEffects(uint32_t *numEffects) = 0; 150 151 virtual status_t queryEffect(uint32_t index, effect_descriptor_t *pDescriptor) = 0; 152 153 virtual status_t getEffectDescriptor(effect_uuid_t *pEffectUUID, effect_descriptor_t *pDescriptor) = 0; 154 155 virtual sp<IEffect> createEffect(pid_t pid, 156 effect_descriptor_t *pDesc, 157 const sp<IEffectClient>& client, 158 int32_t priority, 159 int output, 160 int sessionId, 161 status_t *status, 162 int *id, 163 int *enabled) = 0; 164 165 virtual status_t moveEffects(int session, int srcOutput, int dstOutput) = 0; 166 }; 167 168 169 // ---------------------------------------------------------------------------- 170 171 class BnAudioFlinger : public BnInterface<IAudioFlinger> 172 { 173 public: 174 virtual status_t onTransact( uint32_t code, 175 const Parcel& data, 176 Parcel* reply, 177 uint32_t flags = 0); 178 }; 179 180 // ---------------------------------------------------------------------------- 181 182 }; // namespace android 183 184 #endif // ANDROID_IAUDIOFLINGER_H 185
