* what is the difference between SNDRV_PCM_IOCTL_WRITEN_FRAMES and SNDRV_PCM_IOCTL_WRITEI_FRAMES
@ 2013-05-20 7:14 Zhang wei
2013-05-20 11:41 ` Clemens Ladisch
0 siblings, 1 reply; 5+ messages in thread
From: Zhang wei @ 2013-05-20 7:14 UTC (permalink / raw)
To: alsa-devel
I know the format likes below when use SNDRV_PCM_IOCTL_WRITEI_FRAMES
<http://lxr.free-electrons.com/ident?i=SNDRV_PCM_IOCTL_WRITEN_FRAMES>
L+R+L+R+L+R...
L:a frame left channel data.
R:a frame right channel data.
Right?
But what is the kind of format when use SNDRV_PCM_IOCTL_WRITEN_FRAMES
<http://lxr.free-electrons.com/ident?i=SNDRV_PCM_IOCTL_WRITEN_FRAMES> ?
Thank you:-)
Br
zw
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: what is the difference between SNDRV_PCM_IOCTL_WRITEN_FRAMES and SNDRV_PCM_IOCTL_WRITEI_FRAMES
2013-05-20 7:14 what is the difference between SNDRV_PCM_IOCTL_WRITEN_FRAMES and SNDRV_PCM_IOCTL_WRITEI_FRAMES Zhang wei
@ 2013-05-20 11:41 ` Clemens Ladisch
2013-05-21 6:46 ` Zhang wei
0 siblings, 1 reply; 5+ messages in thread
From: Clemens Ladisch @ 2013-05-20 11:41 UTC (permalink / raw)
To: Zhang wei; +Cc: alsa-devel
Zhang wei wrote:
> I know the format likes below when use SNDRV_PCM_IOCTL_WRITEI_FRAMES
> L+R+L+R+L+R...
> L:a frame left channel data.
> R:a frame right channel data.
>
> But what is the kind of format when use SNDRV_PCM_IOCTL_WRITEN_FRAMES?
Multiple buffers, LLL... and RRR...
Regards,
Clemens
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: what is the difference between SNDRV_PCM_IOCTL_WRITEN_FRAMES and SNDRV_PCM_IOCTL_WRITEI_FRAMES
2013-05-20 11:41 ` Clemens Ladisch
@ 2013-05-21 6:46 ` Zhang wei
2013-05-21 8:01 ` Clemens Ladisch
0 siblings, 1 reply; 5+ messages in thread
From: Zhang wei @ 2013-05-21 6:46 UTC (permalink / raw)
To: Clemens Ladisch; +Cc: alsa-devel
>Multiple buffers, LLL... and RRR...
Thank you very much.
But how long the data of LLL...and RRR... ?
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: what is the difference between SNDRV_PCM_IOCTL_WRITEN_FRAMES and SNDRV_PCM_IOCTL_WRITEI_FRAMES
2013-05-21 6:46 ` Zhang wei
@ 2013-05-21 8:01 ` Clemens Ladisch
2013-05-21 8:23 ` Zhang wei
0 siblings, 1 reply; 5+ messages in thread
From: Clemens Ladisch @ 2013-05-21 8:01 UTC (permalink / raw)
To: Zhang wei; +Cc: alsa-devel
Zhang wei wrote:
>> Multiple buffers, LLL... and RRR...
>
> But how long the data of LLL...and RRR... ?
That is the last parameter of snd_pcm_writen().
Regards,
Clemens
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: what is the difference between SNDRV_PCM_IOCTL_WRITEN_FRAMES and SNDRV_PCM_IOCTL_WRITEI_FRAMES
2013-05-21 8:01 ` Clemens Ladisch
@ 2013-05-21 8:23 ` Zhang wei
0 siblings, 0 replies; 5+ messages in thread
From: Zhang wei @ 2013-05-21 8:23 UTC (permalink / raw)
To: Clemens Ladisch; +Cc: alsa-devel
>That is the last parameter of snd_pcm_writen().
Thank you very much :-)
I try to test it again .
---
BR
zw
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-05-21 8:23 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2013-05-20 7:14 what is the difference between SNDRV_PCM_IOCTL_WRITEN_FRAMES and SNDRV_PCM_IOCTL_WRITEI_FRAMES Zhang wei
2013-05-20 11:41 ` Clemens Ladisch
2013-05-21 6:46 ` Zhang wei
2013-05-21 8:01 ` Clemens Ladisch
2013-05-21 8:23 ` Zhang wei
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