IAudioFlinger.h revision 7562408b2261d38415453378b6188f74fda99d88
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 31 32namespace android { 33 34// ---------------------------------------------------------------------------- 35 36class IAudioFlinger : public IInterface 37{ 38public: 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 128class BnAudioFlinger : public BnInterface<IAudioFlinger> 129{ 130public: 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 142