[Alsa-user] ALSA - CMI8788 card - sound not playing.

[<sak...@wi...>]

Hi.,
     I have a developed sample playback application which is playing the
sound properly for 48 Khz, 44.1 Khz for intel sound card which is built
in Pentium PC.
For setting the period size and buffer size i am using
snd_pcm_hw_params_set_buffer_size_near(),
snd_pcm_hw_params_set_period_size_near() functions.
buffer_size, period size retruned from those functions are 16384, 1024
respectively. transfer_align also 1024.
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 But if i run the same  playback application for CMI 8788 card it is not
giving any output. The values returned from the
snd_pcm_hw_params_set_buffer_size_near(),
snd_pcm_hw_params_set_period_size_near()  are 64, 32 respectively. The
transfer align is 32. How can set the buffer size? Is there any formula
available for setting the buffer size? or
snd_pcm_hw_params_set_buffer_size_near() can set properly? and
occasionally i am seeing underrun also.. Please help...
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Sakthi  S G
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