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[问答]

怎样去修改RK3288系统的视频设置为70%呢

怎样去修改RK3288系统的视频设置为70%呢?

回帖(1)

鲁玉萍

2022-3-3 11:19:19
  RK3288[android 7.1]调试笔记默认音乐、视频、游戏和其他媒体音乐,游戏,铃声和通知等修改视频设置为70%
  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
  旧模式 100644
  新模式 100755
  索引 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 平方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) {
  路径修改为/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
  旧模式 100644
  新模式 100755
  索引 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 {
  /** 最大音量索引值音频流 */
  private static int[] MAX_STREAM_VOLUME = new int[] {//这里重量的属性都设为 15
  - 5, // STREAM_VOICE_CALL
  - 7, // STREAM_VOICE_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
  }; /** 音频流的最小音量 */ private static int] MIN_STR_VOLUME t[] {// STREAM_C = 新的 EAM_1
  中的最小音量索引值, // STREAM_C = STREAM_RING 0 , // STRSYSTEM 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 = 振动器 == 空?false : vibrator.hasVibrator();
  - // 初始化音量
  - int maxVolume = SystemProperties.getInt(“ro.config.vc_call_vol_steps”,
  - MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL]);
  - 如果(最大音量!= 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获取的比重设置给屏蔽掉上面使用的默认值,为什么要屏蔽掉,原因是如果在system.prop获取的比重设置与我们修改容量类型,默认容量改变的结构体中的值/ 4 系统类型的设置值 = 系统的设置值
  + // 初始容量
  + // int maxVol 属性。 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);
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