linux-kernel - Re: [PATCH] media: mediatek: vcodec: Skip SOURCE

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Date:   Thu, 23 Jun 2022 11:22:05 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Chen-Yu Tsai <wenst@...omium.org>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>
Cc:     linux-media@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Nicolas Dufresne <nicolas@...fresne.ca>,
        Yunfei Dong <yunfei.dong@...iatek.com>
Subject: Re: [PATCH] media: mediatek: vcodec: Skip SOURCE_CHANGE & EOS events
 for stateless

Il 20/06/22 08:33, Chen-Yu Tsai ha scritto:
> The stateless decoder API does not specify the usage of SOURCE_CHANGE
> and EOF events. These events are used by stateful decoders to signal
> changes in the bitstream. They do not make sense for stateless decoders.
> 
> Do not handle subscription for these two types of events for stateless
> decoder instances. This fixes the last v4l2-compliance error:
> 
> Control ioctls:
> 		fail: v4l2-test-controls.cpp(946): have_source_change || have_eos
> 	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: FAIL
> 
> Fixes: 8cdc3794b2e3 ("media: mtk-vcodec: vdec: support stateless API")
> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
> Reviewed-by: Nicolas Dufresne <nicolas.dufresne@...labora.com>

Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>