CPU : DM8168
OS : Linux 2.6.37
SDK: DVRRDK_03.00.00.00
CODEC: tlv320aic3106
Hi,
I'm trying to get audio working well on a 8168evm. When I use alsa-lib to record audio and then play it back in real time, capture working ok but playback return error as bellow.
Somtimes when i test above, there are many underrun reported from playback 。What is the problem?
++++++++ Audio_DrvOpen start! ++++++++AUDIO Rate requested 44100Hz, get 44100Hz)
AUDIO CAPTURE: period size = 1000 frames
AUDIO CAPTURE: period time = 22675 us
AUDIO CAPTURE: buffer_size = 16000
++++++++ Audio_DrvOpen end! ++++++++
audio play init start
AUDIO_PLAY >> opened device
AUDIO PLAYBACK: period size = 1000 frames
AUDIO PLAYBACK: period time = 22675 us
AUDIO PLAYBACK: buffer_size = 16000
audio play init end!
AUDIO >> audio play wait............
Audio_playMain: audio play pcm 174000
hwptr_update: pcmC0D0p:0: pos=36/1000/16000, hwptr=36/0/36/0
hwptr_update: pcmC0D0p:0: pos=337/1000/16000, hwptr=301/36/337/0
hwptr_update: pcmC0D0p:0: pos=662/1000/16000, hwptr=325/337/662/0
hwptr_update: pcmC0D0p:0: pos=979/1000/16000, hwptr=317/662/979/0
hwptr_update: pcmC0D0p:0: pos=1248/1000/16000, hwptr=2/1246/1248/0
hwptr_update: pcmC0D0p:0: pos=1522/1000/16000, hwptr=274/1248/1522/0
hwptr_update: pcmC0D0p:0: pos=1802/1000/16000, hwptr=280/1522/1802/0
hwptr_update: pcmC0D0p:0: pos=2083/1000/16000, hwptr=2/2081/2083/0
hwptr_update: pcmC0D0p:0: pos=2356/1000/16000, hwptr=273/2083/2356/0
hwptr_update: pcmC0D0p:0: pos=2637/1000/16000, hwptr=281/2356/2637/0
hwptr_update: pcmC0D0p:0: pos=2918/1000/16000, hwptr=281/2637/2918/0
hwptr_update: pcmC0D0p:0: pos=3199/1000/16000, hwptr=2/3197/3199/0
hwptr_update: pcmC0D0p:0: pos=3472/1000/16000, hwptr=273/3199/3472/0
hwptr_update: pcmC0D0p:0: pos=3753/1000/16000, hwptr=281/3472/3753/0
hwptr_update: pcmC0D0p:0: pos=4034/1000/16000, hwptr=2/4032/4034/0
hwptr_update: pcmC0D0p:0: pos=4307/1000/16000, hwptr=273/4034/4307/0
hwptr_update: pcmC0D0p:0: pos=4588/1000/16000, hwptr=281/4307/4588/0
hwptr_update: pcmC0D0p:0: pos=4868/1000/16000, hwptr=280/4588/4868/0
hwptr_update: pcmC0D0p:0: pos=5149/1000/16000, hwptr=2/5147/5149/0
hwptr_update: pcmC0D0p:0: pos=5421/1000/16000, hwptr=272/5149/5421/0
hwptr_update: pcmC0D0p:0: pos=5702/1000/16000, hwptr=281/5421/5702/0
AUDIO >> error from writei: Resource temporarily unavailable
AUDIO >> PLAYBACK ERROR <174000 bytes> Resource temporarily unavailable, playback wont continue...
