are trying this 'cos we want the card to raise interrupts
as frequently as possible.
Is this a h/w limitation of ymf724 card or is there any way we can get
to reduce the period size on a ymf724 card to around 64 bytes ?
Thanx in advance,
Shaju Abraham
Hi all,
The following is my understanding pls correct me if I am
wrong.
1. Buffer_size is how much of memory has been allocated to buffer the
sound to be played out.
2. Fragment size is the measure of amount of data played between two
consecutive interrupts raised by the
Hi all,
Can frags may be more than the number of bds available i.e 32 ? If
yes, does it follow that both of the following cases are possible.
i) the whole buffer (of size buffer_size ) can be
divided between 32 bds so that a given bd will always point to same
address
Hi all,
Can u pls tell me what the relation is between runtime-period_size,
runtime-periods and runtime-buffersize ( pcm_native.c ) and
ichdev-size , ichdev-period_size, ichdev-frags ( in intel8x0.c)
Thanx,
--Shaju
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Hi all,
I work on i810 motherboard with built-in sound card.
I use aplay with -F option ( set period-time ) to vary the period-time
from 166 micro secs to 1500 microsecs. I also vary the buffer time (
with -B option)
I observe the following...
1.The number of fragments i.e frags won't
tell me where in the ALSA src code this piece of
action is happening and how to insert my own module on the run.
--shaju abraham
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is disabling the interrupts just before
this is called?
Does spin_lock_irq do that?
We are using RedHat 7.1 linux on i810 motherboard and the latest version
of ALSA 0.9.0.
Shaju Abraham.
ALSA ../alsa-kernel/core/pcm_lib.c:188: Unexpected hw_pointer value
(stream = 0, delta: -68, max jitter = 4480
Hi all,
I am trying to port ALSA code to rtlinux. I am doing it on a
intel810 chipset(built in sound card) and linux kernel version is 2.4.4
with rt 3.1 patch.
The way we are going abt it is that we are registering the sound card
interrupt with rtlinux instead of linux.
We have also
