How to disable Audio Feature in Android / How to build one mininum Android
Matt Shao
ani
the actual driver should be blocked.So return all the calls to from
AudioHardwareInterface file.
Emulator also works on the same concept.
There should be a better way to stop audio by changing some make
files.
On Feb 16, 6:07 pm, Matt Shao <low...@gmail.com> wrote:
> Hi guys:
>
> I am a fresh man in the android and now I am working on a board that
> using freescale imx51. We are porting the BSP from IMX51 EVK.
> For this board, we change the audio codec from it's original audio
> codec SGTL5000 to WM8758, so of course, the EVK audio driver could not work
> on our board
>
> We definitely will modify the audio driver for our new audio codec, but
> currently we want to bypass this issue and boot the android without audio
> feature.
>
> But In fact, when we boot, the system will hang with the
> "ANDROID" animation, after check with the logcat, we found the system is
> waiting for the media.audio_policy, like this:
>
> [20:20:25.983] I/ServiceManager( 2041): Waiting for sevice
> media.audio_policy...
> [20:20:26.981] I/ServiceManager( 2041): Waiting for sevice
> media.audio_policy...
> [20:20:27.981] I/ServiceManager( 2041): Waiting for sevice
> media.audio_policy...
> [20:20:28.981] I/ServiceManager( 2041): Waiting for sevice
> media.audio_policy...
> [20:20:29.981] I/ServiceManager( 2041): Waiting for sevice
> media.audio_policy...
> [20:20:30.981] W/AudioSystem( 2041): AudioPolicyService not published,
> waiting...
>
> As the audio codec does not loaded successfully, the ALSA could not
> found any audio device so the system hang here.
Jag
This will enable stub audio and will ensure that your device will
bootup without audio support.
Thanks
Jag
>
> I am a fresh man in the android and now I am working on a board that
> using freescale imx51. We are porting the BSP from IMX51 EVK.
> For this board, we change the audio codec from it's original audio
> codec SGTL5000 to WM8758, so of course, the EVK audio driver could not work
> on our board
>
> We definitely will modify the audio driver for our new audio codec, but
> currently we want to bypass this issue and boot the android without audio
> feature.
>
> But In fact, when we boot, the system will hang with the
> "ANDROID" animation, after check with the logcat, we found the system is
> waiting for the media.audio_policy, like this:
>
> [20:20:25.983] I/ServiceManager( 2041): Waiting for sevice
> media.audio_policy...
> [20:20:26.981] I/ServiceManager( 2041): Waiting for sevice
> media.audio_policy...
> [20:20:27.981] I/ServiceManager( 2041): Waiting for sevice
> media.audio_policy...
> [20:20:28.981] I/ServiceManager( 2041): Waiting for sevice
> media.audio_policy...
> [20:20:29.981] I/ServiceManager( 2041): Waiting for sevice
> media.audio_policy...
> [20:20:30.981] W/AudioSystem( 2041): AudioPolicyService not published,
> waiting...
>
> As the audio codec does not loaded successfully, the ALSA could not
> found any audio device so the system hang here.
manish shakya
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Manish Shakya
http://www.manishshakya.com.np
http://secs.oakland.edu/~ganesan/iMX/
Matt Shao
I have tried ani's suggestion. I modify the codec cpp file and
change all the read/write register function with fake action and it
does work.
Now I could bypass this issue and see the home screen.
on the other hand, using BOARD_USES_GENERIC_AUDIO also do not work
for me.....
ani, thanks a lot...
But the question is still exist: How to Build one mininum Android?
2011/2/17, manish shakya <manishs...@gmail.com>:
jagan.mut...@wipro.com
What do you mean by “intermittently” ??
When you define BOARD_USES_GENERIC_AUDIO := true, this will enable stub audio which will never access any hardware for rendering.
Path: /frameworks/base/libs/audioflinger
File: Android.mk
Look for this flag over there. If this is defined, AudioHardwareInterface will create a Stub AudioHardware and will not produce any audio.
Thanks
Jagan
Amit Pundir
In your BoardConfig.mk:
set-->
BOARD_USES_GENERIC_AUDIO := true
and unset or delete-->
#BOARD_USES_ALSA_AUDIO := true
#BUILD_WITH_ALSA_UTILS := true
Regards,
Amit Pundir
> With this question, I have one more question:
> How to config to build one minimum Android? (Any configuration file
> that we can modify?)
> (for example: delete AUDIO feature/delete WIFI/delete Bluetooth/delete
> all the google App/etc...)
> Any comments is highly appreciated!! Thanks a lot
>
manish shakya
That mean, even I enable BOARD_USES_GENERIC_AUDIO := true, I could see the problem irregularly.
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