VIM3L + Toneboard - volume output

VIM3
1

Hi,
I have VIM3L and Tone 1 tone board
I am running an Android audio app
The overall volume coming out of the system is at about 20%.

I have tried setting the output volume to max, within the app, but this does not work
(it works if I run the app on an Android tablet)

I tried setting the volume and media outputs to maximum, in the Android settings, but these settings did not seem to be saved on the next system re-boot.

Is there a way to do this please?

Thanks

2

Here are some more observations:

Here are my observations:

Scenario 1

App incudes Java code to set media volume to 100%

Install the app and launch – volume is at 100%

Close the ap, relaunch – volume is still at 100%

Restart the device, launch the app – volume is at 20%

Scenario 2

Restart the device, touch the volume controls on the touchscreen

A warning is displayed:

Raise volume above recommended level?

Listening at high volume for long periods may damage your hearing.

CANCEL / OK

Without clicking on anything, launch the app – the volume is at 100%

It seems that the very fact that this warning was displayed, allows the app to set the volume to 100%

Scenario 3

Restart the device, launch the app – volume is at 20%

Play the first track.

When the track ends, and the second track is started, the volume goes to 100%

3

I have also seen this post, but modifying the OS is not an option for me.

4

Hi - can anyone suggest anything please?

5

Please respond, this is super important

6

Hi @gar1234 the customizations you request cannot be done without OS modifications, and you need to modify them in the source code and compile, there are no other suitable options.

7

Do you know where/what modifications are to be made - I will try and get someone to do it

8

@xiong.zhang can you provide the patch for this ?

9

Thank you - this is really appreciated. I have people in Australia trying to ship product the product today - it is nearly time for them to go home. I have someone in the UK who might be able to modify the OS. He will start work very soon. It’s a tight overlap. So if you can get me the required modifications quickly, it might work out.

10

Set the config_safe_media_volume_enabled property to false

xiong@server:/users/xiong/work/amlogic/vim3/vim3_64bit/frameworks/base$ git diff
diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index 0b5dd7e70e8..985cce4bad2 100644
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -2325,7 +2325,7 @@
     <bool name="config_useDevInputEventForAudioJack">false</bool>
 
     <!-- Whether safe headphone volume is enabled or not (country specific). -->
-    <bool name="config_safe_media_volume_enabled">true</bool>
+    <bool name="config_safe_media_volume_enabled">false</bool>
 
     <!-- Set to true if the wifi display supports compositing content stored
          in gralloc protected buffers.  For this to be true, there must exist
11

Thank you - I got someone to implement this