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From: Keiichi Watanabe <keiichiw@chromium.org>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: virtio-dev@lists.oasis-open.org,
	"Linux Media Mailing List" <linux-media@vger.kernel.org>,
	"Alexandre Courbot" <acourbot@chromium.org>,
	"Alex Lau" <alexlau@chromium.org>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	"Dylan Reid" <dgreid@chromium.org>,
	"David Staessens" <dstaessens@chromium.org>,
	"Dmitry Sepp" <dmitry.sepp@opensynergy.com>,
	"Enrico Granata" <egranata@google.com>,
	"Frediano Ziglio" <fziglio@redhat.com>,
	"Hans Verkuil" <hverkuil@xs4all.nl>,
	"Stéphane Marchesin" <marcheu@chromium.org>,
	"Pawel Osciak" <posciak@chromium.org>,
	spice-devel@lists.freedesktop.org,
	"David Stevens" <stevensd@chromium.org>,
	"Tomasz Figa" <tfiga@chromium.org>,
	uril@redhat.com,
	"Samiullah Khawaja" <samiullah.khawaja@opensynergy.com>,
	"Kiran Pawar" <kiran.pawar@opensynergy.com>
Subject: Re: [PATCH v3 2/2] virtio-video: Define a feature for exported objects from different virtio devices
Date: Thu, 27 Feb 2020 16:24:25 +0900	[thread overview]
Message-ID: <CAD90VcaFyd2bFJUYzDF7OMsm+sWFFJuAHAqCk9hFEWnR8p+zVg@mail.gmail.com> (raw)
In-Reply-To: <20200225100144.c3rmtmq7kqyskkq7@sirius.home.kraxel.org>

Hi,

On Tue, Feb 25, 2020 at 7:01 PM Gerd Hoffmann <kraxel@redhat.com> wrote:
>
>   Hi,
>
> > +        /*
> > +         * Followed by either
> > +         * - struct virtio_video_mem_entry entries[]
> > +         *   for VIRTIO_VIDEO_MEM_TYPE_GUEST_PAGES
> > +         * - struct virtio_video_object_entry entries[]
> > +         *   for VIRTIO_VIDEO_MEM_TYPE_VIRTIO_OBJECT
>
> Wouldn't that be a single virtio_video_object_entry?
> Or could it be one per plane?

It depends on the value of "planes_layout" in virtio_video_resource_create.
I have documented this restriction as follows:

> +If \field{planes_layout} is VIRTIO_VIDEO_PLANES_LAYOUT_SINGLE_BUFFER,
> +the number of \field{virtio_video_object_entry} MUST be one. If it is
> +VIRTIO_VIDEO_PLANES_LAYOUT_PER_PLANE, the number MUST be equal to
> +\field{num_planes}.

Best regards,
Keiichi


>
> cheers,
>   Gerd
>

      reply	other threads:[~2020-02-27  7:24 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-06 10:20 [PATCH v3 0/2] Virtio video device specification Keiichi Watanabe
2020-02-06 10:20 ` [PATCH v3 1/2] virtio-video: Add virtio " Keiichi Watanabe
2020-02-25  9:59   ` Gerd Hoffmann
2020-02-27  7:24     ` Keiichi Watanabe
2020-02-27  9:28       ` Gerd Hoffmann
2020-03-04  4:31         ` Alexandre Courbot
2020-03-04  6:42           ` Gerd Hoffmann
2020-03-04 10:07             ` Alexandre Courbot
2020-03-23 12:07               ` Keiichi Watanabe
2020-03-23 13:28                 ` Dmitry Sepp
2020-03-23 15:48                   ` Keiichi Watanabe
2020-03-25  9:47                     ` Dmitry Sepp
2020-03-27  3:35                       ` Keiichi Watanabe
2020-03-30  9:53                         ` Dmitry Sepp
2020-04-06  9:32                           ` Alexandre Courbot
2020-04-06 11:46                             ` Keiichi Watanabe
2020-04-07  9:21                               ` Dmitry Sepp
2020-04-09 10:46                                 ` Keiichi Watanabe
2020-04-17  8:08                                   ` Dmitry Sepp
2020-04-20  9:57                                     ` Keiichi Watanabe
2020-04-21  8:38                                       ` Dmitry Sepp
2020-04-24 11:42                                         ` Keiichi Watanabe
2020-04-27 14:28                                           ` Dmitry Sepp
2020-04-07 14:49   ` Dmitry Sepp
2020-04-09 10:46     ` Keiichi Watanabe
2020-04-09 13:13       ` Dmitry Sepp
2020-04-24 11:45         ` Keiichi Watanabe
2020-04-27  9:33           ` Dmitry Sepp
2020-05-18  5:17   ` Keiichi Watanabe
2020-05-27 12:12     ` Dmitry Sepp
2020-05-29 14:21       ` Keiichi Watanabe
2020-06-01  7:19         ` Alexandre Courbot
2020-02-06 10:20 ` [PATCH v3 2/2] virtio-video: Define a feature for exported objects from different virtio devices Keiichi Watanabe
2020-02-25 10:01   ` Gerd Hoffmann
2020-02-27  7:24     ` Keiichi Watanabe [this message]

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