Hi,
Le jeudi 24 août 2023 à 19:03 +0200, Takashi Iwai a écrit :
> > 3. How to handle the xrun issue. pause or resume. which are brought by ALSA.
>
> Doesn't V4L2 handle the overrun/underrun at all? Also, no resume
> support?
just a 2 cents comment. All our video m2m are job based. When there
On Fri, Aug 25, 2023 at 10:15 PM Hans Verkuil wrote:
>
> On 25/08/2023 15:54, Takashi Iwai wrote:
> > On Fri, 25 Aug 2023 05:46:43 +0200,
> > Shengjiu Wang wrote:
> >>
> >> On Fri, Aug 25, 2023 at 4:21 AM Mark Brown wrote:
> >>>
> >>> On Thu, Aug 24, 2023 at 07:03:09PM +0200, Takashi Iwai wrote:
On 25/08/2023 15:54, Takashi Iwai wrote:
> On Fri, 25 Aug 2023 05:46:43 +0200,
> Shengjiu Wang wrote:
>>
>> On Fri, Aug 25, 2023 at 4:21 AM Mark Brown wrote:
>>>
>>> On Thu, Aug 24, 2023 at 07:03:09PM +0200, Takashi Iwai wrote:
Shengjiu Wang wrote:
>>>
> But there are several issues:
On Fri, 25 Aug 2023 05:46:43 +0200,
Shengjiu Wang wrote:
>
> On Fri, Aug 25, 2023 at 4:21 AM Mark Brown wrote:
> >
> > On Thu, Aug 24, 2023 at 07:03:09PM +0200, Takashi Iwai wrote:
> > > Shengjiu Wang wrote:
> >
> > > > But there are several issues:
> > > > 1. Need to create sound cards. ASRC
On Fri, Aug 25, 2023 at 4:21 AM Mark Brown wrote:
>
> On Thu, Aug 24, 2023 at 07:03:09PM +0200, Takashi Iwai wrote:
> > Shengjiu Wang wrote:
>
> > > But there are several issues:
> > > 1. Need to create sound cards. ASRC module support multi instances, then
> > > need to create multi sound cards
On Thu, Aug 24, 2023 at 07:03:09PM +0200, Takashi Iwai wrote:
> Shengjiu Wang wrote:
> > But there are several issues:
> > 1. Need to create sound cards. ASRC module support multi instances, then
> > need to create multi sound cards for each instance.
> Hm, why can't it be multiple PCM
On Wed, 23 Aug 2023 16:33:19 +0200,
Shengjiu Wang wrote:
>
> On Fri, Aug 11, 2023 at 7:05 PM Shengjiu Wang wrote:
> >
> > Hi Mark, Takashi
> >
> > On Thu, Aug 3, 2023 at 9:11 PM Shengjiu Wang
> > wrote:
> > >
> > > On Thu, Aug 3, 2023 at 1:28 AM Mark Brown wrote:
> > > >
> > > > On Wed, Aug
On Fri, Aug 11, 2023 at 7:05 PM Shengjiu Wang wrote:
>
> Hi Mark, Takashi
>
> On Thu, Aug 3, 2023 at 9:11 PM Shengjiu Wang wrote:
> >
> > On Thu, Aug 3, 2023 at 1:28 AM Mark Brown wrote:
> > >
> > > On Wed, Aug 02, 2023 at 10:41:43PM +0800, Shengjiu Wang wrote:
> > >
> > > > Currently the ASRC
Hi Mark, Takashi
On Thu, Aug 3, 2023 at 9:11 PM Shengjiu Wang wrote:
>
> On Thu, Aug 3, 2023 at 1:28 AM Mark Brown wrote:
> >
> > On Wed, Aug 02, 2023 at 10:41:43PM +0800, Shengjiu Wang wrote:
> >
> > > Currently the ASRC in ALSA is to connect to another I2S device as
> > > a sound card. But
On 04/08/2023 14:19, Shengjiu Wang wrote:
> On Wed, Aug 2, 2023 at 8:28 PM Hans Verkuil wrote:
>>
>> On 02/08/2023 14:02, Shengjiu Wang wrote:
>>> On Wed, Aug 2, 2023 at 7:22 PM Takashi Iwai wrote:
On Wed, 02 Aug 2023 09:32:37 +0200,
Hans Verkuil wrote:
>
> Hi all,
>
On Wed, Aug 2, 2023 at 8:28 PM Hans Verkuil wrote:
>
> On 02/08/2023 14:02, Shengjiu Wang wrote:
> > On Wed, Aug 2, 2023 at 7:22 PM Takashi Iwai wrote:
> >>
> >> On Wed, 02 Aug 2023 09:32:37 +0200,
> >> Hans Verkuil wrote:
> >>>
> >>> Hi all,
> >>>
> >>> On 25/07/2023 08:12, Shengjiu Wang wrote:
On Thu, Aug 3, 2023 at 1:28 AM Mark Brown wrote:
>
> On Wed, Aug 02, 2023 at 10:41:43PM +0800, Shengjiu Wang wrote:
>
> > Currently the ASRC in ALSA is to connect to another I2S device as
> > a sound card. But we'd like to the ASRC can be used by user space directly
> > that user space
On Wed, Aug 02, 2023 at 10:41:43PM +0800, Shengjiu Wang wrote:
> Currently the ASRC in ALSA is to connect to another I2S device as
> a sound card. But we'd like to the ASRC can be used by user space directly
> that user space application can get the output after conversion from ASRC.
That sort
On Wed, Aug 2, 2023 at 8:08 PM Takashi Iwai wrote:
>
> On Wed, 02 Aug 2023 14:02:29 +0200,
> Shengjiu Wang wrote:
> >
> > On Wed, Aug 2, 2023 at 7:22 PM Takashi Iwai wrote:
> > >
> > > On Wed, 02 Aug 2023 09:32:37 +0200,
> > > Hans Verkuil wrote:
> > > >
> > > > Hi all,
> > > >
> > > > On
On 02/08/2023 14:02, Shengjiu Wang wrote:
> On Wed, Aug 2, 2023 at 7:22 PM Takashi Iwai wrote:
>>
>> On Wed, 02 Aug 2023 09:32:37 +0200,
>> Hans Verkuil wrote:
>>>
>>> Hi all,
>>>
>>> On 25/07/2023 08:12, Shengjiu Wang wrote:
Audio signal processing has the requirement for memory to
On Wed, Aug 02, 2023 at 08:02:29PM +0800, Shengjiu Wang wrote:
> On Wed, Aug 2, 2023 at 7:22 PM Takashi Iwai wrote:
> > Well, I personally don't mind to have some audio capability in v4l2
> > layer. But, the only uncertain thing for now is whether this is a
> > must-have or not.
> Thanks, I
On Wed, 02 Aug 2023 14:02:29 +0200,
Shengjiu Wang wrote:
>
> On Wed, Aug 2, 2023 at 7:22 PM Takashi Iwai wrote:
> >
> > On Wed, 02 Aug 2023 09:32:37 +0200,
> > Hans Verkuil wrote:
> > >
> > > Hi all,
> > >
> > > On 25/07/2023 08:12, Shengjiu Wang wrote:
> > > > Audio signal processing has the
On Wed, Aug 2, 2023 at 7:22 PM Takashi Iwai wrote:
>
> On Wed, 02 Aug 2023 09:32:37 +0200,
> Hans Verkuil wrote:
> >
> > Hi all,
> >
> > On 25/07/2023 08:12, Shengjiu Wang wrote:
> > > Audio signal processing has the requirement for memory to
> > > memory similar as Video.
> > >
> > > This patch
On Wed, 02 Aug 2023 09:32:37 +0200,
Hans Verkuil wrote:
>
> Hi all,
>
> On 25/07/2023 08:12, Shengjiu Wang wrote:
> > Audio signal processing has the requirement for memory to
> > memory similar as Video.
> >
> > This patch is to add this support in v4l2 framework, defined
> > new buffer type
Hi all,
On 25/07/2023 08:12, Shengjiu Wang wrote:
> Audio signal processing has the requirement for memory to
> memory similar as Video.
>
> This patch is to add this support in v4l2 framework, defined
> new buffer type V4L2_BUF_TYPE_AUDIO_CAPTURE and
> V4L2_BUF_TYPE_AUDIO_OUTPUT, defined new
Audio signal processing has the requirement for memory to
memory similar as Video.
This patch is to add this support in v4l2 framework, defined
new buffer type V4L2_BUF_TYPE_AUDIO_CAPTURE and
V4L2_BUF_TYPE_AUDIO_OUTPUT, defined new format v4l2_audio_format
for audio case usage.
The created audio
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