Android audio use fake device to emulate driver so all the calls to 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: > > * > [20:20:25.974] I/SystemServer( 2041): Audio Service > [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. > * > > Does any one know how to disable the audio feature in the android? > > 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 -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting
