Can you check your audio device files (like PCMC0D0 )in /dev/snd or /dev
If sb get the error: no such device, please check the alsa-lib ---------- alsa-lib-1.0.13/include/config.h #define ALSA_DEVICE_DIRECTORY "/dev/" The old device path is /dev if Andriod has below update, this value need to be /dev/snd On 12月15日, 下午1时16分, "Daniel Youn" <youn.dan...@gmail.com> wrote: > Hi, gougou > I am also using WM9713 codec but I can't get sound driver working. > > After reading this mailling list, I've check the following: > > 1) get source for /platform/external/alas-lib > 2) get source for /platform/hardware/alsasound > 3) modified BoardConfig.mk like this > > #HAVE_HTC_AUDIO_DRIVER := true > #BOARD_USES_GENERIC_AUDIO := true > BOARD_USES_ALSA_AUDIO := true > > 4) add sample asound.conf file to /platform/system/core/rootdir/etc/ > > But, when the system starts up, there's some infinite loop like this log > > >> I/ServiceManager( 42): Waiting for sevice media.audio_flinger... > > and the cause is this log > > >> E/AudioHardwareALSA( 123): Unable to attach mixer to device > > AndroidPlayback: No such file or directory>> E/AudioHardwareALSA( 123): > Unable to attach mixer to device default: No > > such file or directory>> E/AudioHardwareALSA( 123): Unable to attach mixer > to device > > AndroidRecord: No such file or directory>> E/AudioHardwareALSA( 123): Unable > to attach mixer to device default: No > > such file or directory > > Do you guys have any idea, what's wrong? > Thanks for help in advance. > > > > On Fri, Dec 12, 2008 at 3:45 PM, gougou <zqy2000...@gmail.com> wrote: > > > Hi Yang > > > I am using WM97xx codec and has it's ALSA driver worked. > > And I also integrated the alsa-lib into my source. Now the audio > > working fine. > > > But the only thing I wanna know is : > > How the asound.conf work and How to write this file. Now I skip this > > config file and wite the configurations directly into my hardware. > > Thanks > > > PS: > > If sb get the error: no such device, please check the alsa-lib > > ---------- alsa-lib-1.0.13/include/config.h > > > #define ALSA_DEVICE_DIRECTORY "/dev/" > > > The old device path is /dev > > if Andriod has below update, this value need to be /dev/snd > >http://review.source.android.com/r/e2ff04fb6804 > > > On 11月26日, 下午5时09分, "Yang, Xiaopeng" <xiaopeng.y...@windriver.com> > > wrote: > > > Hi Maxime, > > > > The ALSA contribution from Wind River includes alsa-lib and > > > libaudio-alsa libraries, along with other patches for bionic and > > system/core. > > > > Because alsa-lib and libaudio-alsa are new projects, they have been sent > > to > > > Google for integration, and may be available in the repositories soon. > > > > The other modifications on bionic and system/core have been submitted to > > > Gerrit for review: > > > > -------------------------------------------- > > > [OK ] bionic/ defaulthttp:// > > review.source.android.com/r/fad1668b10d5 > > > (as xiaopeng.y...@windriver.com) > > > > [OK ] system/core/ defaulthttp:// > > review.source.android.com/r/e2ff04fb6804 > > > (as xiaopeng.y...@windriver.com) > > > > After above projects and patches have been integrated into andorid, you > > can > > > build android images with ALSA support. To that end, there are still > > two > > > things need to do: > > > > 1. A /etc/asound.conf is required for ALSA to work. Attached patch adds a > > > sample asound.conf for zoom board, copy this sample file to > > > system/core/rootdir/etc/asound.conf and make necessary changes to it > > > according to your hardware. > > > > 2. Add the following line into the BoardConfig.mk of your board: > > > > BOARD_USES_ALSA_AUDIO := true > > > > then rebuild android to see whether ALSA audio work. > > > > Regards, > > > Xiaopeng > > > > Maxime Petazzoni 写道: > > > > > Hi Sean, > > > > > Do you have more information to give us about when and how this code > > > > is going to be available? The implementation proposed down here by > > > > Misael looks nice too, but I'd like to have a peek about the code you > > > > used for the Freerunner, and more importantly how you used it. > > > > > Thanks in advance, > > > > - Maxime > > > > > On 12 nov, 05:42, Sean McNeil <seanmcne...@gmail.com> wrote: > > > >> Hi Maxime, > > > > >> Wind River is in the process of submitting an ALSA audio > > implementation. > > > >> That is what I use on the Openmoko Freerunner and what has been > > > >> successfully used on the TI OMAP Zoom reference platform. > > > > >> Maxime Petazzoni wrote: > > > >>> Hi, > > > >>> I believe most of the porting efforts on the various hardware > > platform > > > >>> will soon get to the point (if not already) of a running system ; the > > > >>> next step being making sure all the basic functionality is there. > > > >>> Audio being one of the most important one, since telephony also > > > >>> depends on it. > > > >>> Without anything done on that front, we're facing the "using stubbed > > > >>> audio hardware, no sound will be produced" warning message when > > Dalvik > > > >>> starts. > > > >>> From what I've read, Android relies on an hardware glue library > > > >>> libaudio, providing AudioFlinger with the appropriate AudioInterface > > > >>> implementation to output sound to whatever sound driver the hardware > > > >>> uses. For example, on the HTC G1/MSM72xx hardware platform, Google > > > >>> useshttp:// > > android.git.kernel.org/?p=platform/hardware/msm7k.git;a=summary > > > >>> But I think most of the Androids ports are made on hardware that have > > > >>> ALSA device drivers (OMAP for example). And before 20 different > > people > > > >>> start implementing their own libaudio bridging to ALSA, maybe we > > > >>> should coordinate this community effort. Starting by knowing if > > > >>> anything has already been started by someone, somewhere :) > > > >>> If not, I will most likely start working on one, and I foresee that > > > >>> it's going to be tough, as the only real documentation is the msm7k > > > >>> libaudio source code itself. > > > >>> Ideas, comments, suggestions ... and help are most welcome! > > > >>> - Maxime > > > >>> PS: of course, if you got audio working without going through this > > > >>> libaudio stuff, please share your discoveries ! > > > > sample_asound_conf.patch > > > 3K查看下载- 隐藏被引用文字 - > > > > - 显示引用的文字 -- 隐藏被引用文字 - > > - 显示引用的文字 - --~--~---------~--~----~------------~-------~--~----~ unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting -~----------~----~----~----~------~----~------~--~---
