From: Tiffany Lin <tiffany.lin@mediatek.com>
To: Hans Verkuil <hverkuil@xs4all.nl>,
Andrew-CT Chen <andrew-ct.chen@mediatek.com>
Cc: Hans Verkuil <hans.verkuil@cisco.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Daniel Kurtz <djkurtz@chromium.org>,
Pawel Osciak <posciak@chromium.org>,
Eddie Huang <eddie.huang@mediatek.com>,
Yingjoe Chen <yingjoe.chen@mediatek.com>,
<linux-kernel@vger.kernel.org>, <linux-media@vger.kernel.org>,
<linux-mediatek@lists.infradead.org>
Subject: Re: [PATCH 0/4] Add V4L2_PIX_FMT_MT21C format for MT8173 codec driver
Date: Thu, 8 Sep 2016 17:11:19 +0800 [thread overview]
Message-ID: <1473325879.26612.2.camel@mtksdaap41> (raw)
In-Reply-To: <e4d91e67-0b36-3675-575a-c5f38a68dbdb@xs4all.nl>
Hi Hans,
On Thu, 2016-09-08 at 09:21 +0200, Hans Verkuil wrote:
> Hi Tiffany,
>
> On 09/07/2016 08:56 AM, Tiffany Lin wrote:
> > This patch series add Mediatek compressed block format V4L2_PIX_FMT_MT21C, the
> > decoder driver will decoded bitstream to V4L2_PIX_FMT_MT21C format.
> >
> > User space applications could use MT8173 MDP driver to convert V4L2_PIX_FMT_MT21C to
> > V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M and V4L2_PIX_FMT_YVU420.
> >
> > MDP driver[1] is stand alone driver.
> >
> > Usage:
> > MT21C -> MT8173 MDP -> NV12M/YUV420M/YVU420
> > NV12M/NV21M/YUV420M/YVU420M -> mt8173 Encoder -> H264/VP8
> > H264/VP8/VP9 -> mtk8173 Decoder -> MT21C
> >
> > When encode with MT21 source, the pipeline will be:
> > MT21C -> MDP driver-> NV12M/NV21M/YUV420M/YVU420M -> Encoder -> H264/VP8
> >
> > When playback, the pipeline will be:
> > H264/VP8/VP9 -> Decoder driver -> MT21C -> MDP Driver -> DRM
> >
> > [1]https://patchwork.kernel.org/patch/9305329/
> >
> > Tiffany Lin (4):
> > v4l: add Mediatek compressed video block format
> > docs-rst: Add compressed video formats used on MT8173 codec driver
> > vcodec: mediatek: Add V4L2_PIX_FMT_MT21C support for v4l2 decoder
> > arm64: dts: mediatek: Add Video Decoder for MT8173
> >
> > Documentation/media/uapi/v4l/pixfmt-reserved.rst | 6 +++
> > arch/arm64/boot/dts/mediatek/mt8173.dtsi | 44 ++++++++++++++++++++
> > drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c | 7 +++-
> > drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
> > include/uapi/linux/videodev2.h | 1 +
> > 5 files changed, 58 insertions(+), 1 deletion(-)
> >
>
> So basically the video decoder is useless without support for this format and
> without the MDP driver, right?
>
Yes. It also require new vpu firmware.
Andrew will help release new vpu firmware include encode/decode/mdp
capability.
best regards,
Tiffany
> I'm wondering if I should hold off on merging the decoder driver until these two
> are in. What is the timeline for v6 of the MDP driver?
>
> If a v6 is posted early next week, then I have time to review and (assuming it is
> OK) I can make a pull request for both this driver and the MDP driver.
>
> If it takes longer, then there is a good chance that it will slip to 4.10. I will
> have very little time in the period September 20 - October 14.
>
> Regards,
>
> Hans
next prev parent reply other threads:[~2016-09-08 9:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-07 6:56 [PATCH 0/4] Add V4L2_PIX_FMT_MT21C format for MT8173 codec driver Tiffany Lin
2016-09-07 6:56 ` [PATCH 1/4] v4l: add Mediatek compressed video block format Tiffany Lin
2016-09-07 6:56 ` [PATCH 2/4] docs-rst: Add compressed video formats used on MT8173 codec driver Tiffany Lin
2016-09-07 6:56 ` [PATCH 3/4] vcodec: mediatek: Add V4L2_PIX_FMT_MT21C support for v4l2 decoder Tiffany Lin
2016-09-07 6:56 ` [PATCH 4/4] arm64: dts: mediatek: Add Video Decoder for MT8173 Tiffany Lin
2016-09-07 9:23 ` [PATCH 2/4] docs-rst: Add compressed video formats used on MT8173 codec driver Hans Verkuil
2016-09-08 6:44 ` Tiffany Lin
2016-09-08 7:21 ` [PATCH 0/4] Add V4L2_PIX_FMT_MT21C format for " Hans Verkuil
2016-09-08 9:11 ` Tiffany Lin [this message]
2016-09-08 9:27 ` Hans Verkuil
2016-09-14 4:52 ` Tiffany Lin
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