Cc: Qt development mailing list
Subject: Re: [Development] QAbstractVideoFilter, the pipeline and QImage
Hi,
> I really want a QAbstractVideoBuffer *QVideoFrame::buffer() which I can then
> cast to my custom type.
Sorry, but just a note.
QAbstractVideoBuffer is an abstraction that
list
Subject: Re: [Development] QAbstractVideoFilter, the pipeline and QImage
> From: "Val Doroshchuk"
> Hi,
> thanks for explanation.
> Does it sound good to try to create a data storage, where converted data is
> located per real frame, (which will be created on f
s happening on multiple threads (or cores? - if available) Are there
multiple frames "in flight"?
From: Jason H
Sent: Wednesday, January 9, 2019 4:28:01 PM
To: Val Doroshchuk
Cc: Qt development mailing list
Subject: Re: [Develop
?
From: Jason H
Sent: Wednesday, January 9, 2019 4:28:01 PM
To: Val Doroshchuk
Cc: Qt development mailing list
Subject: Re: [Development] QAbstractVideoFilter, the pipeline and QImage
>> I really want a QAbstractVideoBuffer *QVideoFrame::buffer() which I can then
>>
p a QVariant and store it as
metadata and use QVideoFrame availableMetaData()?
From: Development on behalf of Jason H
Sent: Tuesday, January 8, 2019 6:33:14 PM
To: Jason H
Cc: Qt development mailing list
Subject: Re: [Development] QAbstractVide
e
relatively fast)
From: Development on behalf of Jason H
Sent: Tuesday, January 8, 2019 6:33:14 PM
To: Jason H
Cc: Qt development mailing list
Subject: Re: [Development] QAbstractVideoFilter, the pipeline and QImage
I'm still plugging away at this. My life is being made diff
in the Qt API?
Sent: Monday, January 07, 2019 at 5:22 PM
From: "Jason H"
To: "Jason H"
Cc: "Pierre-Yves Siret" , "Qt development mailing list"
Subject: Re: [Development] QAbstractVideoFilter, the pipeline and QImage
I'm trying to implement a QAbstr
in advance.
Sent: Monday, January 07, 2019 at 10:57 AM
From: "Jason H"
To: "Jason H"
Cc: "Pierre-Yves Siret" , "Qt development mailing list"
Subject: Re: [Development] QAbstractVideoFilter, the pipeline and QImage
I have been thinking about this more, and
->QImage, QImage->QVideoFrame] where each format step is the (inputFormat -> outputFormat)
Just my 0.02BTC.
Sent: Wednesday, January 02, 2019 at 12:33 PM
From: "Jason H"
To: "Pierre-Yves Siret"
Cc: "Qt development mailing list"
Subject: Re: [Development]
t;Qt development mailing list"
Subject: Re: [Development] QAbstractVideoFilter, the pipeline and QImage
The filter pipeline starts with a file or camera device, and various filters are applied sequentially to frames. However I spend a lot of time converting frames to QImages for analys
> The filter pipeline starts with a file or camera device, and various
> filters are applied sequentially to frames. However I spend a lot of time
> converting frames to QImages for analysis and painting. I'm hoping there's
> a faster way to do this. Some of the filters alter the frame, some just
I sent a message on interest@ but no one replied so I'm escalating it here. I
am making a series of filters, but I'm encountering performance issues. I think
it's because of lack of my understanding, or detail in the docs.
The filter pipeline starts with a file or camera device, and various
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