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Message-ID: <a07360437c160baaec3ca624588bef90a499ca25.camel@mediatek.com>
Date: Fri, 17 Mar 2023 03:06:11 +0000
From: Yunfei Dong (董云飞)
<Yunfei.Dong@...iatek.com>
To: "nfraprado@...labora.com" <nfraprado@...labora.com>
CC: "nicolas@...fresne.ca" <nicolas@...fresne.ca>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"frkoenig@...omium.org" <frkoenig@...omium.org>,
"stevecho@...omium.org" <stevecho@...omium.org>,
"wenst@...omium.org" <wenst@...omium.org>,
"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-mediatek@...ts.infradead.org"
<linux-mediatek@...ts.infradead.org>,
"daniel@...ll.ch" <daniel@...ll.ch>,
Project_Global_Chrome_Upstream_Group
<Project_Global_Chrome_Upstream_Group@...iatek.com>,
"benjamin.gaignard@...labora.com" <benjamin.gaignard@...labora.com>,
"hverkuil-cisco@...all.nl" <hverkuil-cisco@...all.nl>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"hsinyi@...omium.org" <hsinyi@...omium.org>,
"matthias.bgg@...il.com" <matthias.bgg@...il.com>,
"angelogioacchino.delregno@...labora.com"
<angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH v3] media: mediatek: vcodec: Force capture queue format to
MM21
Hi Nicolas,
Thanks for your suggestion.
On Thu, 2023-03-16 at 16:51 -0400, Nícolas F. R. A. Prado wrote:
> Hi Yunfei,
>
> thanks for the patch.
>
> On Tue, Mar 14, 2023 at 03:25:57PM +0800, Yunfei Dong wrote:
> > Libyuv is one software library used to covert format. Only covert
> > mediatek uncompressed mode MM21 to standard yuv420 for MT21 is
> > compressed mode. Need to set capture queue format to MM21 in order
> > to use Libyuv when scp firmware support MM21 and MT21.
>
> This commit message is a bit confusing still. Here's a suggestion:
>
> While the decoder can produce frames in both MM21 and MT21C
> formats, only MM21
> is currently supported by userspace tools (like gstreamer and
> libyuv). In order
> to ensure userspace keeps working after the SCP firmware is
> updated to support
> both MM21 and MT21C formats, force the MM21 format for the
> capture queue.
>
> This is meant as a stopgap solution while dynamic format
> switching between
> MM21 and MT21C isn't implemented in the driver.
>
Will change it like this.
> >
> > Fixes: 7501edef6b1f ("media: mediatek: vcodec: Different codec
> > using different capture format")
> > Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
> > ---
> > changed with v2:
> > - re-write commit message.
> > - change the driver flow.
> > changed with v1:
> > - add Fixes tag.
> > ---
> > .../platform/mediatek/vcodec/mtk_vcodec_dec.c | 24 +++----------
> > ------
> > 1 file changed, 3 insertions(+), 21 deletions(-)
> >
>
> While this change works (that is, I'm able to run fluster tests on
> both MT8192
> and MT8195 using the new MM21+MT21C firmware), it causes a regression
> on
> v4l2-compliance:
>
> [..]
> Format ioctls:
> [..]
> fail: v4l2-test-formats.cpp(478): pixelformat
> 3132544d (MT21) for buftype 9 not reported by ENUM_FMT
> test VIDIOC_G_FMT: FAIL
> fail: v4l2-test-formats.cpp(478): pixelformat
> 3132544d (MT21) for buftype 9 not reported by ENUM_FMT
> test VIDIOC_TRY_FMT: FAIL
> fail: v4l2-test-formats.cpp(478): pixelformat
> 3132544d (MT21) for buftype 9 not reported by ENUM_FMT
> test VIDIOC_S_FMT: FAIL
> [..]
> Total for mtk-vcodec-dec device /dev/video2: 46, Succeeded: 43,
> Failed: 3, Warnings: 0
>
Need to add one patch to change MM21 as the default capture queue
format.
Best Regards,
Yunfei Dong
> The patch makes only MM21 show in VIDIOC_ENUM_FMT, but VIDIOC_S_FMT,
> VIDIOC_G_FMT and VIDIOC_TRY_FMT still show MT21. So I think you need
> to do the
> same forcing of MM21 for those ioctls.
>
> Thanks,
> Nícolas
>
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
> > b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
> > index 641f533c417f..c99705681a03 100644
> > --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
> > +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
> > @@ -39,10 +39,9 @@ static bool mtk_vdec_get_cap_fmt(struct
> > mtk_vcodec_ctx *ctx, int format_index)
> > {
> > const struct mtk_vcodec_dec_pdata *dec_pdata = ctx->dev-
> > >vdec_pdata;
> > const struct mtk_video_fmt *fmt;
> > - struct mtk_q_data *q_data;
> > int num_frame_count = 0, i;
> > - bool ret = true;
> >
> > + fmt = &dec_pdata->vdec_formats[format_index];
> > for (i = 0; i < *dec_pdata->num_formats; i++) {
> > if (dec_pdata->vdec_formats[i].type != MTK_FMT_FRAME)
> > continue;
> > @@ -50,27 +49,10 @@ static bool mtk_vdec_get_cap_fmt(struct
> > mtk_vcodec_ctx *ctx, int format_index)
> > num_frame_count++;
> > }
> >
> > - if (num_frame_count == 1)
> > + if (num_frame_count == 1 || fmt->fourcc == V4L2_PIX_FMT_MM21)
> > return true;
> >
> > - fmt = &dec_pdata->vdec_formats[format_index];
> > - q_data = &ctx->q_data[MTK_Q_DATA_SRC];
> > - switch (q_data->fmt->fourcc) {
> > - case V4L2_PIX_FMT_VP8_FRAME:
> > - if (fmt->fourcc == V4L2_PIX_FMT_MM21)
> > - ret = true;
> > - break;
> > - case V4L2_PIX_FMT_H264_SLICE:
> > - case V4L2_PIX_FMT_VP9_FRAME:
> > - if (fmt->fourcc == V4L2_PIX_FMT_MM21)
> > - ret = false;
> > - break;
> > - default:
> > - ret = true;
> > - break;
> > - }
> > -
> > - return ret;
> > + return false;
> > }
> >
> > static struct mtk_q_data *mtk_vdec_get_q_data(struct
> > mtk_vcodec_ctx *ctx,
> > --
> > 2.25.1
> >
>
>
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