1 /*
2 * Copyright (C) 2015 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 #define LOG_TAG "APM::Gains"
18 //#define LOG_NDEBUG 0
19
20 //#define VERY_VERBOSE_LOGGING
21 #ifdef VERY_VERBOSE_LOGGING
22 #define ALOGVV ALOGV
23 #else
24 #define ALOGVV(a...) do { } while(0)
25 #endif
26
27 #include "Gains.h"
28 #include <Volume.h>
29 #include <math.h>
30 #include <utils/String8.h>
31
32 namespace android {
33
34 // Enginedefault
35 const VolumeCurvePoint
36 Gains::sDefaultVolumeCurve[Volume::VOLCNT] = {
37 {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f}
38 };
39
40
41 const VolumeCurvePoint
42 Gains::sDefaultMediaVolumeCurve[Volume::VOLCNT] = {
43 {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f}
44 };
45
46 const VolumeCurvePoint
47 Gains::sExtMediaSystemVolumeCurve[Volume::VOLCNT] = {
48 {1, -58.0f}, {20, -40.0f}, {60, -21.0f}, {100, -10.0f}
49 };
50
51 const VolumeCurvePoint
52 Gains::sSpeakerMediaVolumeCurve[Volume::VOLCNT] = {
53 {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f}
54 };
55
56 const VolumeCurvePoint
57 Gains::sSpeakerMediaVolumeCurveDrc[Volume::VOLCNT] = {
58 {1, -55.0f}, {20, -43.0f}, {86, -12.0f}, {100, 0.0f}
59 };
60
61 const VolumeCurvePoint
62 Gains::sSpeakerSonificationVolumeCurve[Volume::VOLCNT] = {
63 {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f}
64 };
65
66 const VolumeCurvePoint
67 Gains::sSpeakerSonificationVolumeCurveDrc[Volume::VOLCNT] = {
68 {1, -35.7f}, {33, -26.1f}, {66, -13.2f}, {100, 0.0f}
69 };
70
71 // AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks
72 // AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets.
73 // AUDIO_STREAM_DTMF tracks AUDIO_STREAM_VOICE_CALL while in call (See AudioService.java).
74 // The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset.
75
76 const VolumeCurvePoint
77 Gains::sDefaultSystemVolumeCurve[Volume::VOLCNT] = {
78 {1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f}
79 };
80
81 const VolumeCurvePoint
82 Gains::sDefaultSystemVolumeCurveDrc[Volume::VOLCNT] = {
83 {1, -34.0f}, {33, -24.0f}, {66, -15.0f}, {100, -6.0f}
84 };
85
86 const VolumeCurvePoint
87 Gains::sHeadsetSystemVolumeCurve[Volume::VOLCNT] = {
88 {1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f}
89 };
90
91 const VolumeCurvePoint
92 Gains::sDefaultVoiceVolumeCurve[Volume::VOLCNT] = {
93 {0, -42.0f}, {33, -28.0f}, {66, -14.0f}, {100, 0.0f}
94 };
95
96 const VolumeCurvePoint
97 Gains::sSpeakerVoiceVolumeCurve[Volume::VOLCNT] = {
98 {0, -24.0f}, {33, -16.0f}, {66, -8.0f}, {100, 0.0f}
99 };
100
101 const VolumeCurvePoint
102 Gains::sLinearVolumeCurve[Volume::VOLCNT] = {
103 {0, -96.0f}, {33, -68.0f}, {66, -34.0f}, {100, 0.0f}
104 };
105
106 const VolumeCurvePoint
107 Gains::sSilentVolumeCurve[Volume::VOLCNT] = {
108 {0, -96.0f}, {1, -96.0f}, {2, -96.0f}, {100, -96.0f}
109 };
110
111 const VolumeCurvePoint
112 Gains::sFullScaleVolumeCurve[Volume::VOLCNT] = {
113 {0, 0.0f}, {1, 0.0f}, {2, 0.0f}, {100, 0.0f}
114 };
115
116 const VolumeCurvePoint *Gains::sVolumeProfiles[AUDIO_STREAM_CNT]
117 [DEVICE_CATEGORY_CNT] = {
118 { // AUDIO_STREAM_VOICE_CALL
119 Gains::sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
120 Gains::sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
121 Gains::sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_EARPIECE
122 Gains::sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
123 },
124 { // AUDIO_STREAM_SYSTEM
125 Gains::sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
126 Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
127 Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE
128 Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
129 },
130 { // AUDIO_STREAM_RING
131 Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
132 Gains::sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
133 Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE
134 Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
135 },
136 { // AUDIO_STREAM_MUSIC
137 Gains::sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
138 Gains::sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
139 Gains::sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_EARPIECE
140 Gains::sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
141 },
142 { // AUDIO_STREAM_ALARM
143 Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
144 Gains::sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
145 Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE
146 Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
147 },
148 { // AUDIO_STREAM_NOTIFICATION
149 Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET
150 Gains::sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER
151 Gains::sDefaultVolumeCurve, // DEVICE_CATEGORY_EARPIECE
152 Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
153 },
154 { // AUDIO_STREAM_BLUETOOTH_SCO
155 Gains::sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_HEADSET
156 Gains::sSpeakerVoiceVolumeCurve, // DEVICE_CATEGORY_SPEAKER
157 Gains::sDefaultVoiceVolumeCurve, // DEVICE_CATEGORY_EARPIECE
158 Gains::sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
159 },
160 { // AUDIO_STREAM_ENFORCED_AUDIBLE
161 Gains::sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
162 Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
163 Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE
164 Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
165 },
166 { // AUDIO_STREAM_DTMF
167 Gains::sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET
168 Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER
169 Gains::sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_EARPIECE
170 Gains::sExtMediaSystemVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
171 },
172 { // AUDIO_STREAM_TTS
173 // "Transmitted Through Speaker": always silent except on DEVICE_CATEGORY_SPEAKER
174 Gains::sSilentVolumeCurve, // DEVICE_CATEGORY_HEADSET
175 Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_SPEAKER
176 Gains::sSilentVolumeCurve, // DEVICE_CATEGORY_EARPIECE
177 Gains::sSilentVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
178 },
179 { // AUDIO_STREAM_ACCESSIBILITY
180 Gains::sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET
181 Gains::sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER
182 Gains::sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_EARPIECE
183 Gains::sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
184 },
185 { // AUDIO_STREAM_REROUTING
186 Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_HEADSET
187 Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_SPEAKER
188 Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_EARPIECE
189 Gains::sFullScaleVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
190 },
191 { // AUDIO_STREAM_PATCH
192 Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_HEADSET
193 Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_SPEAKER
194 Gains::sFullScaleVolumeCurve, // DEVICE_CATEGORY_EARPIECE
195 Gains::sFullScaleVolumeCurve // DEVICE_CATEGORY_EXT_MEDIA
196 },
197 };
198
199 //static
volIndexToDb(const VolumeCurvePoint * curve,int indexMin,int indexMax,int indexInUi)200 float Gains::volIndexToDb(const VolumeCurvePoint *curve, int indexMin, int indexMax, int indexInUi)
201 {
202 // the volume index in the UI is relative to the min and max volume indices for this stream type
203 int nbSteps = 1 + curve[Volume::VOLMAX].mIndex - curve[Volume::VOLMIN].mIndex;
204 int volIdx = (nbSteps * (indexInUi - indexMin)) / (indexMax - indexMin);
205
206 // find what part of the curve this index volume belongs to, or if it's out of bounds
207 int segment = 0;
208 if (volIdx < curve[Volume::VOLMIN].mIndex) { // out of bounds
209 return VOLUME_MIN_DB;
210 } else if (volIdx < curve[Volume::VOLKNEE1].mIndex) {
211 segment = 0;
212 } else if (volIdx < curve[Volume::VOLKNEE2].mIndex) {
213 segment = 1;
214 } else if (volIdx <= curve[Volume::VOLMAX].mIndex) {
215 segment = 2;
216 } else { // out of bounds
217 return 0.0f;
218 }
219
220 // linear interpolation in the attenuation table in dB
221 float decibels = curve[segment].mDBAttenuation +
222 ((float)(volIdx - curve[segment].mIndex)) *
223 ( (curve[segment+1].mDBAttenuation -
224 curve[segment].mDBAttenuation) /
225 ((float)(curve[segment+1].mIndex -
226 curve[segment].mIndex)) );
227
228 ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f]",
229 curve[segment].mIndex, volIdx,
230 curve[segment+1].mIndex,
231 curve[segment].mDBAttenuation,
232 decibels,
233 curve[segment+1].mDBAttenuation);
234
235 return decibels;
236 }
237
238 }; // namespace android
239