Android13 导航混音中调节导航音量条声音无变化

最新推荐文章于 2024-06-27 18:06:29 发布

原创最新推荐文章于 2024-06-27 18:06:29 发布 · 330 阅读

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背景：导航混音有媒体音量和导航音量调节，此时调节导航音量条，但开启的导航地图中的音量无变化；

分析：通过抓取的日志中有如下：

05-09 18:50:21.092   436  8729 D AudioTrack: set(): streamType 3, sampleRate 44100, format 0x1, channelMask 0x1, frameCount 22578, flags #0, notificationFrames 0, sessionId 97, transferType 0, uid 10024, pid 6725
05-09 18:50:21.093   436  8729 D AudioTrack: set(): Building AudioTrack with attributes: usage=12 content=1 flags=0x800 tags=[]
05-09 18:50:21.093   436  8729 D AudioTrack: failed to open /proc/6725/cmdline (No such file or directory)
05-09 18:50:21.094   436  8729 D AudioTrack: pid=436, process_name = /system/bin/mediaserver
05-09 18:50:21.094   436  8729 D AudioTrack: binder call pid=436, name=/system/bin/mediaserver,
05-09 18:50:21.094   436  8729 D AudioTrack: show clientName,callingName:/system/bin/mediaserver

中有AudioTrack Failed to open 的日志，说明此时缺少了对应的权限赋予；

修改如下：

diff --git a/android/frameworks/av/media/mediaserver/mediaserver.rc b/android/frameworks/av/media/mediaserver/mediaserver.rc
index 13d3924..7076c3a 100755
--- a/android/frameworks/av/media/mediaserver/mediaserver.rc
+++ b/android/frameworks/av/media/mediaserver/mediaserver.rc
@@ -4,6 +4,6 @@ on property:init.svc.media=*
 service media /system/bin/mediaserver
     class main
     user media
-    group root audio camera inet net_bt net_bt_admin net_bw_acct drmrpc mediadrm
+    group root audio camera inet net_bt net_bt_admin net_bw_acct drmrpc mediadrm readproc

修改之后验证导航音量的调节后会随着音量条的变化而变化；