On mar, 2003-03-18 at 13:32, Takashi Iwai wrote:
> also, don't forget to unlock the spinlock during calling
> snd_pcm_period_elapsed() if a single lock is used for callbacks.
Yes, I'm following the tutorial and it's clear about that.
Now I have another weird problem. This is a peice of my hw_param
function:
static int pcm_hw_params(){
printk("pcm_hw_params bytes=%d\n",params_buffer_bytes(hw_params));
for (per=0; per<params_periods(hw_params); per++) {
printk("pcm_hw_params Add%d (%x - %d)\n",
per,
sgbuf->table[per].addr,
params_period_bytes(hw_params));
}
}
Mar 19 00:48:33 localhost kernel: pcm_hw_params bytes=44100
Mar 19 00:48:33 localhost kernel: pcm_hw_params Add0 (3a1d000 - 11026)
Mar 19 00:48:33 localhost kernel: pcm_hw_params Add1 (3a1c000 - 11026)
Mar 19 00:48:33 localhost kernel: pcm_hw_params Add2 (3a1b000 - 11026)
Mar 19 00:48:33 localhost kernel: pcm_hw_params OK
Look at the physical addresses. They're spaced by 4KB, but the periods
are 11KB long and 11026*3<44100 !! You can imagine how beatiful sound I
get... What am I missing ?
Bye.
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