I'm trying to get mplayer to play DVDs, running on top of an
Android kernel (since I couldn't find any Android applications who could
play DVDs straight from the drive).
So far, the video works, but the audio doesn't. mplayer tells me:
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
Selected audio codec: [ffac3] afm: ffmpeg (FFmpeg AC-3)
==========================================================================
[AO_ALSA] alsa-lib: pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p'
failed (-16): Device or resource busy
[AO_ALSA] Playback open error: Device or resource busy
Failed to initialize audio driver 'alsa:device=hw=0.0'
Could not open/initialize audio device -> no sound.
Audio: no sound
Now, I don't know much about this kernel, but it does have some of the
expected ALSA files:
# l /dev/snd/
total 0
crw-------. 1 root root 116, 0 jan 1 1970 controlC0
crw-------. 1 root root 116, 16 jan 1 1970 pcmC0D0p
crw-------. 1 root root 116, 33 jan 1 1970 timer
#
But "amixer controls" shows nothing, and alsamixer tells me it finds
a card called RK-HDMI-I2S (the "RK" is probably because the SoC used is
a Rockchip), but with no controls whatsoever.
OTOH the dmesg tells me:
[ 1.140363] ALSA device list:
[ 1.140384] No soundcards found.
Does someone have an idea what might be going on or how I could figure
it out? The HDMI audio support in the kernel does work for Android
applications, but I know very little about what that means, when seen
from a GNU/Linux point of view (I'm running a Debian user-space on this
Android kernel).
Stefan
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