RK3288[android 7.1]调试笔记 修改默认Music, video, games, & other media音乐，视频，游戏，铃声和通知等音量设置为70%
RK3288[android 7.1]调试笔记 修改默认Music, video, games, & other media音乐，视频，游戏，铃声和通知等音量设置为70%
修改路径为/frameworks/base/media/java/android/media/AudioSystem.java文件
wangxd@build-server-100:~/work/dsy/rk3288-Android-7.0/frameworks/base(m_android_7_0)$ git diff media/java/android/media/AudioSystem.java
diff --git a/media/java/android/media/AudioSystem.java b/media/java/android/media/AudioSystem.java
old mode 100644
new mode 100755
index f597440..219089c
--- a/media/java/android/media/AudioSystem.java
+++ b/media/java/android/media/AudioSystem.java
@@ -762,16 +762,16 @@ public class AudioSystem
}
public static int[] DEFAULT_STREAM_VOLUME = new int[] {//这里修改默认的音量值 11/15=0.73 接近70%
- 4, // STREAM_VOICE_CALL
- 7, // STREAM_SYSTEM
- 5, // STREAM_RING
+ 11, // STREAM_VOICE_CALL
+ 11, // STREAM_SYSTEM
+ 11, // STREAM_RING
11, // STREAM_MUSIC
- 6, // STREAM_ALARM
- 5, // STREAM_NOTIFICATION
- 7, // STREAM_BLUETOOTH_SCO
- 7, // STREAM_SYSTEM_ENFORCED
- 11, // STREAM_DTMF
- 11 // STREAM_TTS
+ 11, // STREAM_ALARM
+ 11, // STREAM_NOTIFICATION
+ 11, // STREAM_BLUETOOTH_SCO
+ 11, // STREAM_SYSTEM_ENFORCED
+ 11, // STREAM_DTMF
+ 11 // STREAM_TTS
};
public static String streamToString(int stream) {
修改路径为/frameworks/base/services/core/java/com/android/server/audio/AudioService.java文件
wangxd@build-server-100:~/work/dsy/rk3288-Android-7.0/frameworks/base(m_android_7_0)$ git diff services/core/java/com/android/server/audio/AudioService.java
diff --git a/services/core/java/com/android/server/audio/AudioService.java b/services/core/java/com/android/serve
old mode 100644
new mode 100755
index 40ae864..3fd67a3
--- a/services/core/java/com/android/server/audio/AudioService.java
+++ b/services/core/java/com/android/server/audio/AudioService.java
@@ -261,14 +261,14 @@ public class AudioService extends IAudioService.Stub {
/** Maximum volume index values for audio streams */
private static int[] MAX_STREAM_VOLUME = new int[] {//这里修改音量的最大值都设为15
- 5, // STREAM_VOICE_CALL
- 7, // STREAM_SYSTEM
- 7, // STREAM_RING
+ 15, // STREAM_VOICE_CALL
+ 15, // STREAM_SYSTEM
+ 15, // STREAM_RING
15, // STREAM_MUSIC
- 7, // STREAM_ALARM
- 7, // STREAM_NOTIFICATION
+ 15, // STREAM_ALARM
+ 15, // STREAM_NOTIFICATION
15, // STREAM_BLUETOOTH_SCO
- 7, // STREAM_SYSTEM_ENFORCED
+ 15, // STREAM_SYSTEM_ENFORCED
15, // STREAM_DTMF
15 // STREAM_TTS
};
/** Minimum volume index values for audio streams */
private static int[] MIN_STREAM_VOLUME = new int[] {//这里使用是默认的音量最小值
1, // STREAM_VOICE_CALL
0, // STREAM_SYSTEM
0, // STREAM_RING
0, // STREAM_MUSIC
0, // STREAM_ALARM
0, // STREAM_NOTIFICATION
0, // STREAM_BLUETOOTH_SCO
0, // STREAM_SYSTEM_ENFORCED
0, // STREAM_DTMF
0 // STREAM_TTS
};
@@ -614,19 +614,19 @@ public class AudioService extends IAudioService.Stub {
Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
mHasVibrator = vibrator == null ? false : vibrator.hasVibrator();
- // Initialize volume
- int maxVolume = SystemProperties.getInt("ro.config.vc_call_vol_steps",
- MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL]);
- if (maxVolume != MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL]) {
- MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL] = maxVolume;
- AudioSystem.DEFAULT_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL] = (maxVolume * 3) / 4;
- }
- maxVolume = SystemProperties.getInt("ro.config.media_vol_steps",
- MAX_STREAM_VOLUME[AudioSystem.STREAM_MUSIC]);
- if (maxVolume != MAX_STREAM_VOLUME[AudioSystem.STREAM_MUSIC]) {
- MAX_STREAM_VOLUME[AudioSystem.STREAM_MUSIC] = maxVolume;
- AudioSystem.DEFAULT_STREAM_VOLUME[AudioSystem.STREAM_MUSIC] = (maxVolume * 3) / 4;
- }
//这里把在system.prop获取的音量设定值给屏蔽掉使用上面修改的值，为什么要屏蔽掉，原因是如果在system.prop获取的音量设定值与我们修改在上面默认音量值，默认音量最大值，默认音量最小值的结构体里的值不一致，会把我们的设定值变为设定值的3/4
+ // // Initialize volume
+ // int maxVolume = SystemProperties.getInt("ro.config.vc_call_vol_steps",
+ // MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL]);
+ // if (maxVolume != MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL]) {
+ // MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL] = maxVolume;
+ // AudioSystem.DEFAULT_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL] = (maxVolume * 3) / 4;
+ // }
+ // maxVolume = SystemProperties.getInt("ro.config.media_vol_steps",
+ // MAX_STREAM_VOLUME[AudioSystem.STREAM_MUSIC]);
+ // if (maxVolume != MAX_STREAM_VOLUME[AudioSystem.STREAM_MUSIC]) {
+ // MAX_STREAM_VOLUME[AudioSystem.STREAM_MUSIC] = maxVolume;
+ // AudioSystem.DEFAULT_STREAM_VOLUME[AudioSystem.STREAM_MUSIC] = (maxVolume * 3) / 4;
+ // }
sSoundEffectVolumeDb = context.getResources().getInteger(
com.android.internal.R.integer.config_soundEffectVolumeDb);