IAudioFlinger.h revision c26741598a840f7c1d12ee457fb26f68fcdbcc70
146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)/* 246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * Copyright (C) 2007 The Android Open Source Project 346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * 446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * Licensed under the Apache License, Version 2.0 (the "License"); 546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * you may not use this file except in compliance with the License. 646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * You may obtain a copy of the License at 746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * 846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * http://www.apache.org/licenses/LICENSE-2.0 946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * 1046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * Unless required by applicable law or agreed to in writing, software 1146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * distributed under the License is distributed on an "AS IS" BASIS, 1246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * See the License for the specific language governing permissions and 1446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * limitations under the License. 1546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) */ 1646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 1746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#ifndef ANDROID_IAUDIOFLINGER_H 1846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#define ANDROID_IAUDIOFLINGER_H 1946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 2046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <stdint.h> 2146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <sys/types.h> 2246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <unistd.h> 2346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 2446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <utils/RefBase.h> 2546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <utils/Errors.h> 2646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <binder/IInterface.h> 2746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <media/IAudioTrack.h> 2846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <media/IAudioRecord.h> 2946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <media/IAudioFlingerClient.h> 3046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <system/audio.h> 3146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <system/audio_policy.h> 3246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <hardware/audio_policy.h> 3346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <hardware/audio_effect.h> 3446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <media/IEffect.h> 3546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <media/IEffectClient.h> 3646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include <utils/String8.h> 3746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 3846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)namespace android { 3946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 4046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)// ---------------------------------------------------------------------------- 4146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 4246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)class IAudioFlinger : public IInterface 4346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles){ 4446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)public: 4546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) DECLARE_META_INTERFACE(AudioFlinger); 4646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 4746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // or-able bits shared by createTrack and openRecord, but not all combinations make sense 4846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) enum { 4946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) TRACK_DEFAULT = 0, // client requests a default AudioTrack 5046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) TRACK_TIMED = 1, // client requests a TimedAudioTrack 5146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) TRACK_FAST = 2, // client requests a fast AudioTrack or AudioRecord 5246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) }; 5346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) typedef uint32_t track_flags_t; 5446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 5546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) /* create an audio track and registers it with AudioFlinger. 5646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * return null if the track cannot be created. 5746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) */ 5846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual sp<IAudioTrack> createTrack( 5946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) pid_t pid, 6046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) audio_stream_type_t streamType, 6146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) uint32_t sampleRate, 6246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) audio_format_t format, 6346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) audio_channel_mask_t channelMask, 6446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) int frameCount, 6546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) track_flags_t *flags, 6646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) const sp<IMemory>& sharedBuffer, 6746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) audio_io_handle_t output, 6846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) pid_t tid, // -1 means unused, otherwise must be valid non-0 6946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) int *sessionId, 7046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) status_t *status) = 0; 7146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 7246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual sp<IAudioRecord> openRecord( 7346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) pid_t pid, 7446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) audio_io_handle_t input, 7546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) uint32_t sampleRate, 7646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) audio_format_t format, 7746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) audio_channel_mask_t channelMask, 7846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) int frameCount, 7946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) track_flags_t flags, 8046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) pid_t tid, // -1 means unused, otherwise must be valid non-0 8146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) int *sessionId, 8246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) status_t *status) = 0; 8346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 8446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) /* query the audio hardware state. This state never changes, 8546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * and therefore can be cached. 8646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) */ 8746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual uint32_t sampleRate(audio_io_handle_t output) const = 0; 8846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#if 0 8946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual int channelCount(audio_io_handle_t output) const = 0; 9046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#endif 9146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual audio_format_t format(audio_io_handle_t output) const = 0; 9246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual size_t frameCount(audio_io_handle_t output) const = 0; 9346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 9446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // return estimated latency in milliseconds 9546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual uint32_t latency(audio_io_handle_t output) const = 0; 9646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 9746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) /* set/get the audio hardware state. This will probably be used by 9846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) * the preference panel, mostly. 9946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) */ 10046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual status_t setMasterVolume(float value) = 0; 10146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) virtual status_t setMasterMute(bool muted) = 0; 102 103 virtual float masterVolume() const = 0; 104 virtual bool masterMute() const = 0; 105 106 /* set/get stream type state. This will probably be used by 107 * the preference panel, mostly. 108 */ 109 virtual status_t setStreamVolume(audio_stream_type_t stream, float value, 110 audio_io_handle_t output) = 0; 111 virtual status_t setStreamMute(audio_stream_type_t stream, bool muted) = 0; 112 113 virtual float streamVolume(audio_stream_type_t stream, 114 audio_io_handle_t output) const = 0; 115 virtual bool streamMute(audio_stream_type_t stream) const = 0; 116 117 // set audio mode 118 virtual status_t setMode(audio_mode_t mode) = 0; 119 120 // mic mute/state 121 virtual status_t setMicMute(bool state) = 0; 122 virtual bool getMicMute() const = 0; 123 124 virtual status_t setParameters(audio_io_handle_t ioHandle, 125 const String8& keyValuePairs) = 0; 126 virtual String8 getParameters(audio_io_handle_t ioHandle, const String8& keys) 127 const = 0; 128 129 // register a current process for audio output change notifications 130 virtual void registerClient(const sp<IAudioFlingerClient>& client) = 0; 131 132 // retrieve the audio recording buffer size 133 virtual size_t getInputBufferSize(uint32_t sampleRate, audio_format_t format, 134 audio_channel_mask_t channelMask) const = 0; 135 136 virtual audio_io_handle_t openOutput(audio_module_handle_t module, 137 audio_devices_t *pDevices, 138 uint32_t *pSamplingRate, 139 audio_format_t *pFormat, 140 audio_channel_mask_t *pChannelMask, 141 uint32_t *pLatencyMs, 142 audio_output_flags_t flags) = 0; 143 virtual audio_io_handle_t openDuplicateOutput(audio_io_handle_t output1, 144 audio_io_handle_t output2) = 0; 145 virtual status_t closeOutput(audio_io_handle_t output) = 0; 146 virtual status_t suspendOutput(audio_io_handle_t output) = 0; 147 virtual status_t restoreOutput(audio_io_handle_t output) = 0; 148 149 virtual audio_io_handle_t openInput(audio_module_handle_t module, 150 audio_devices_t *pDevices, 151 uint32_t *pSamplingRate, 152 audio_format_t *pFormat, 153 audio_channel_mask_t *pChannelMask) = 0; 154 virtual status_t closeInput(audio_io_handle_t input) = 0; 155 156 virtual status_t setStreamOutput(audio_stream_type_t stream, audio_io_handle_t output) = 0; 157 158 virtual status_t setVoiceVolume(float volume) = 0; 159 160 virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, 161 audio_io_handle_t output) const = 0; 162 163 virtual unsigned int getInputFramesLost(audio_io_handle_t ioHandle) const = 0; 164 165 virtual int newAudioSessionId() = 0; 166 167 virtual void acquireAudioSessionId(int audioSession) = 0; 168 virtual void releaseAudioSessionId(int audioSession) = 0; 169 170 virtual status_t queryNumberEffects(uint32_t *numEffects) const = 0; 171 172 virtual status_t queryEffect(uint32_t index, effect_descriptor_t *pDescriptor) const = 0; 173 174 virtual status_t getEffectDescriptor(const effect_uuid_t *pEffectUUID, 175 effect_descriptor_t *pDescriptor) const = 0; 176 177 virtual sp<IEffect> createEffect(pid_t pid, 178 effect_descriptor_t *pDesc, 179 const sp<IEffectClient>& client, 180 int32_t priority, 181 audio_io_handle_t output, 182 int sessionId, 183 status_t *status, 184 int *id, 185 int *enabled) = 0; 186 187 virtual status_t moveEffects(int session, audio_io_handle_t srcOutput, 188 audio_io_handle_t dstOutput) = 0; 189 190 virtual audio_module_handle_t loadHwModule(const char *name) = 0; 191 192 // helpers for android.media.AudioManager.getProperty(), see description there for meaning 193 // FIXME move these APIs to AudioPolicy to permit a more accurate implementation 194 // that looks on primary device for a stream with fast flag, primary flag, or first one. 195 virtual int32_t getPrimaryOutputSamplingRate() = 0; 196 virtual int32_t getPrimaryOutputFrameCount() = 0; 197 198}; 199 200 201// ---------------------------------------------------------------------------- 202 203class BnAudioFlinger : public BnInterface<IAudioFlinger> 204{ 205public: 206 virtual status_t onTransact( uint32_t code, 207 const Parcel& data, 208 Parcel* reply, 209 uint32_t flags = 0); 210}; 211 212// ---------------------------------------------------------------------------- 213 214}; // namespace android 215 216#endif // ANDROID_IAUDIOFLINGER_H 217