1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_AUDIOSYSTEM_H_
#define ANDROID_AUDIOSYSTEM_H_
#include <utils/RefBase.h>
#include <utils/threads.h>
#include <media/IAudioFlinger.h>
namespace android {
typedef void (*audio_error_callback)(status_t err);
class AudioSystem
{
public:
enum audio_format {
DEFAULT = 0,
PCM_16_BIT,
PCM_8_BIT,
INVALID_FORMAT
};
enum audio_mode {
MODE_INVALID = -2,
MODE_CURRENT = -1,
MODE_NORMAL = 0,
MODE_RINGTONE,
MODE_IN_CALL,
NUM_MODES // not a valid entry, denotes end-of-list
};
enum audio_routes {
ROUTE_EARPIECE = (1 << 0),
ROUTE_SPEAKER = (1 << 1),
ROUTE_BLUETOOTH_SCO = (1 << 2),
ROUTE_HEADSET = (1 << 3),
ROUTE_BLUETOOTH_A2DP = (1 << 4),
ROUTE_ALL = 0xFFFFFFFF
};
/* These are static methods to control the system-wide AudioFlinger
* only privileged processes can have access to them
*/
// routing helper functions
static status_t speakerphone(bool state);
static status_t isSpeakerphoneOn(bool* state);
static status_t bluetoothSco(bool state);
static status_t isBluetoothScoOn(bool* state);
static status_t muteMicrophone(bool state);
static status_t isMicrophoneMuted(bool *state);
static status_t setMasterVolume(float value);
static status_t setMasterMute(bool mute);
static status_t getMasterVolume(float* volume);
static status_t getMasterMute(bool* mute);
static status_t setStreamVolume(int stream, float value);
static status_t setStreamMute(int stream, bool mute);
static status_t getStreamVolume(int stream, float* volume);
static status_t getStreamMute(int stream, bool* mute);
static status_t setMode(int mode);
static status_t getMode(int* mode);
static status_t setRouting(int mode, uint32_t routes, uint32_t mask);
static status_t getRouting(int mode, uint32_t* routes);
static status_t isMusicActive(bool *state);
// Temporary interface, do not use
// TODO: Replace with a more generic key:value get/set mechanism
static status_t setParameter(const char* key, const char* value);
static void setErrorCallback(audio_error_callback cb);
// helper function to obtain AudioFlinger service handle
static const sp<IAudioFlinger>& get_audio_flinger();
static float linearToLog(int volume);
static int logToLinear(float volume);
static status_t getOutputSamplingRate(int* samplingRate);
static status_t getOutputFrameCount(int* frameCount);
static status_t getOutputLatency(uint32_t* latency);
// ----------------------------------------------------------------------------
private:
class DeathNotifier: public IBinder::DeathRecipient
{
public:
DeathNotifier() {
}
virtual void binderDied(const wp<IBinder>& who);
};
static sp<DeathNotifier> gDeathNotifier;
friend class DeathNotifier;
static Mutex gLock;
static sp<IAudioFlinger> gAudioFlinger;
static audio_error_callback gAudioErrorCallback;
static int gOutSamplingRate;
static int gOutFrameCount;
static uint32_t gOutLatency;
};
}; // namespace android
#endif /*ANDROID_AUDIOSYSTEM_H_*/
|
