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review.blissroms.org / platform_frameworks_native / 2dcf5dae9864c103e8f03495d58ed89a14f1020e / . / libs / audioflinger / AudioPolicyManagerGeneric.h
blob: d904520cbca133c8ef925d673eef2f30e4199745 [file] [log] [blame]
Eric Laurent9d91ad52009-07-17 12:17:14 -0700[diff] [blame]1/*
2 * Copyright (C) 2009 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
18#include <stdint.h>
19#include <sys/types.h>
20
21#include <utils/Errors.h>
22#include <utils/KeyedVector.h>
23#include <hardware_legacy/AudioPolicyInterface.h>
24#include <utils/threads.h>
25
26
27namespace android {
28
29// ----------------------------------------------------------------------------
30
31#define MAX_DEVICE_ADDRESS_LEN 20
32#define NUM_TEST_OUTPUTS 5
33
34class AudioPolicyManagerGeneric: public AudioPolicyInterface
35#ifdef AUDIO_POLICY_TEST
36 , public Thread
37#endif //AUDIO_POLICY_TEST
38{
39
40public:
41 AudioPolicyManagerGeneric(AudioPolicyClientInterface *clientInterface);
42 virtual ~AudioPolicyManagerGeneric();
43
44 // AudioPolicyInterface
45 virtual status_t setDeviceConnectionState(AudioSystem::audio_devices device,
46 AudioSystem::device_connection_state state,
47 const char *device_address);
48 virtual AudioSystem::device_connection_state getDeviceConnectionState(AudioSystem::audio_devices device,
49 const char *device_address);
50 virtual void setPhoneState(int state);
51 virtual void setRingerMode(uint32_t mode, uint32_t mask);
52 virtual void setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config);
53 virtual AudioSystem::forced_config getForceUse(AudioSystem::force_use usage);
54 virtual void setSystemProperty(const char* property, const char* value);
55 virtual audio_io_handle_t getOutput(AudioSystem::stream_type stream,
56 uint32_t samplingRate,
57 uint32_t format,
58 uint32_t channels,
59 AudioSystem::output_flags flags);
60 virtual status_t startOutput(audio_io_handle_t output, AudioSystem::stream_type stream);
61 virtual status_t stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream);
62 virtual void releaseOutput(audio_io_handle_t output);
63 virtual audio_io_handle_t getInput(int inputSource,
64 uint32_t samplingRate,
65 uint32_t format,
66 uint32_t channels,
67 AudioSystem::audio_in_acoustics acoustics);
68 // indicates to the audio policy manager that the input starts being used.
69 virtual status_t startInput(audio_io_handle_t input);
70 // indicates to the audio policy manager that the input stops being used.
71 virtual status_t stopInput(audio_io_handle_t input);
72 virtual void releaseInput(audio_io_handle_t input);
73 virtual void initStreamVolume(AudioSystem::stream_type stream,
74 int indexMin,
75 int indexMax);
76 virtual status_t setStreamVolumeIndex(AudioSystem::stream_type stream, int index);
77 virtual status_t getStreamVolumeIndex(AudioSystem::stream_type stream, int *index);
78
79private:
80
81 enum routing_strategy {
82 STRATEGY_MEDIA,
83 STRATEGY_PHONE,
84 STRATEGY_SONIFICATION,
85 STRATEGY_DTMF,
86 NUM_STRATEGIES
87 };
88
89 // descriptor for audio outputs. Used to maintain current configuration of each opened audio output
90 // and keep track of the usage of this output by each audio stream type.
91 class AudioOutputDescriptor
92 {
93 public:
94 AudioOutputDescriptor();
95
96
97 uint32_t device();
98 void changeRefCount(AudioSystem::stream_type, int delta);
99 bool isUsedByStream(AudioSystem::stream_type stream) { return mRefCount[stream] > 0 ? true : false; }
100 uint32_t refCount();
101
102 uint32_t mSamplingRate; //
103 uint32_t mFormat; //
104 uint32_t mChannels; // output configuration
105 uint32_t mLatency; //
106 AudioSystem::output_flags mFlags; //
107 uint32_t mDevice; // current device this output is routed to
108 uint32_t mRefCount[AudioSystem::NUM_STREAM_TYPES]; // number of streams of each type using this output
109 };
110
111 // descriptor for audio inputs. Used to maintain current configuration of each opened audio input
112 // and keep track of the usage of this input.
113 class AudioInputDescriptor
114 {
115 public:
116 AudioInputDescriptor();
117
118 uint32_t mSamplingRate; //
119 uint32_t mFormat; // input configuration
120 uint32_t mChannels; //
121 AudioSystem::audio_in_acoustics mAcoustics; //
122 uint32_t mDevice; // current device this input is routed to
123 uint32_t mRefCount; // number of AudioRecord clients using this output
124 };
125
126 // stream descriptor used for volume control
127 class StreamDescriptor
128 {
129 public:
130 StreamDescriptor()
131 : mIndexMin(0), mIndexMax(1), mIndexCur(1), mMuteCount(0), mCanBeMuted(true) {}
132
133 int mIndexMin; // min volume index
134 int mIndexMax; // max volume index
135 int mIndexCur; // current volume index
136 int mMuteCount; // mute request counter
137 bool mCanBeMuted; // true is the stream can be muted
138 };
139
140 // return the strategy corresponding to a given stream type
141 static routing_strategy getStrategy(AudioSystem::stream_type stream);
142 // return the output handle of an output routed to the specified device, 0 if no output
143 // is routed to the device
144 float computeVolume(int stream, int index, uint32_t device);
145 // Mute or unmute the stream on the specified output
146 void setStreamMute(int stream, bool on, audio_io_handle_t output);
147 // handle special cases for sonification strategy while in call: mute streams or replace by
148 // a special tone in the device used for communication
149 void handleIncallSonification(int stream, bool starting);
150
151
152#ifdef AUDIO_POLICY_TEST
153 virtual bool threadLoop();
154 void exit();
155 int testOutputIndex(audio_io_handle_t output);
156#endif //AUDIO_POLICY_TEST
157
158
159 AudioPolicyClientInterface *mpClientInterface; // audio policy client interface
160 audio_io_handle_t mHardwareOutput; // hardware output handler
161
162 KeyedVector<audio_io_handle_t, AudioOutputDescriptor *> mOutputs; // list ot output descritors
163 KeyedVector<audio_io_handle_t, AudioInputDescriptor *> mInputs; // list of input descriptors
164 uint32_t mAvailableOutputDevices; // bit field of all available output devices
165 uint32_t mAvailableInputDevices; // bit field of all available input devices
166 int mPhoneState; // current phone state
167 uint32_t mRingerMode; // current ringer mode
168 AudioSystem::forced_config mForceUse[AudioSystem::NUM_FORCE_USE]; // current forced use configuration
169
170 StreamDescriptor mStreams[AudioSystem::NUM_STREAM_TYPES]; // stream descriptors for volume control
171
172#ifdef AUDIO_POLICY_TEST
173 Mutex mLock;
174 Condition mWaitWorkCV;
175
176 int mCurOutput;
177 bool mDirectOutput;
178 audio_io_handle_t mTestOutputs[NUM_TEST_OUTPUTS];
179 int mTestInput;
180 uint32_t mTestDevice;
181 uint32_t mTestSamplingRate;
182 uint32_t mTestFormat;
Eric Laurent29b9eff2009-08-04 07:29:18 -0700[diff] [blame]183 uint32_t mTestChannels;
Eric Laurent9d91ad52009-07-17 12:17:14 -0700[diff] [blame]184 uint32_t mTestLatencyMs;
185#endif //AUDIO_POLICY_TEST
186
187};
188
189};