linux-kernel - Re: [PATCH] venus: vdec: return parsed crop information from stream

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Message-ID: <CAMfZQbw4wFzcocXXGavYdt+o8ydUoW4rSw4QnnrbZgwWUnp7Nw@mail.gmail.com>
Date:   Sun, 18 Oct 2020 15:19:28 -0700
From:   Fritz Koenig <frkoenig@...omium.org>
To:     Alexandre Courbot <acourbot@...omium.org>
Cc:     Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] venus: vdec: return parsed crop information from stream

It looks like only h.264 streams are populating the event.input_crop
struct when receiving the HFI_INDEX_EXTRADATA_INPUT_CROP message in
event_seq_changed().  vp8/vp9 streams end up with the struct filled
with 0.

On Fri, Oct 9, 2020 at 1:45 AM Alexandre Courbot <acourbot@...omium.org> wrote:
>
> Per the stateful codec specification, VIDIOC_G_SELECTION with a target
> of V4L2_SEL_TGT_COMPOSE is supposed to return the crop area of capture
> buffers containing the decoded frame. Until now the driver did not get
> that information from the firmware and just returned the dimensions of
> CAPTURE buffers.
>
> Signed-off-by: Alexandre Courbot <acourbot@...omium.org>
> ---
>  drivers/media/platform/qcom/venus/core.h |  1 +
>  drivers/media/platform/qcom/venus/vdec.c | 21 ++++++++++++++++-----
>  2 files changed, 17 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
> index 7b79a33dc9d6..3bc129a4f817 100644
> --- a/drivers/media/platform/qcom/venus/core.h
> +++ b/drivers/media/platform/qcom/venus/core.h
> @@ -361,6 +361,7 @@ struct venus_inst {
>         unsigned int streamon_cap, streamon_out;
>         u32 width;
>         u32 height;
> +       struct v4l2_rect crop;
>         u32 out_width;
>         u32 out_height;
>         u32 colorspace;
> diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
> index ea13170a6a2c..ee74346f0cae 100644
> --- a/drivers/media/platform/qcom/venus/vdec.c
> +++ b/drivers/media/platform/qcom/venus/vdec.c
> @@ -325,6 +325,10 @@ static int vdec_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
>
>         inst->width = format.fmt.pix_mp.width;
>         inst->height = format.fmt.pix_mp.height;
> +       inst->crop.top = 0;
> +       inst->crop.left = 0;
> +       inst->crop.width = inst->width;
> +       inst->crop.height = inst->height;
>
>         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
>                 inst->fmt_out = fmt;
> @@ -343,6 +347,9 @@ vdec_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
>             s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
>                 return -EINVAL;
>
> +       s->r.top = 0;
> +       s->r.left = 0;
> +
>         switch (s->target) {
>         case V4L2_SEL_TGT_CROP_BOUNDS:
>         case V4L2_SEL_TGT_CROP_DEFAULT:
> @@ -363,16 +370,12 @@ vdec_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
>         case V4L2_SEL_TGT_COMPOSE:
>                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
>                         return -EINVAL;
> -               s->r.width = inst->out_width;
> -               s->r.height = inst->out_height;
> +               s->r = inst->crop;
>                 break;
>         default:
>                 return -EINVAL;
>         }
>
> -       s->r.top = 0;
> -       s->r.left = 0;
> -
>         return 0;
>  }
>
> @@ -1309,6 +1312,10 @@ static void vdec_event_change(struct venus_inst *inst,
>
>         inst->width = format.fmt.pix_mp.width;
>         inst->height = format.fmt.pix_mp.height;
> +       inst->crop.left = ev_data->input_crop.left;
> +       inst->crop.top = ev_data->input_crop.top;
> +       inst->crop.width = ev_data->input_crop.width;
> +       inst->crop.height = ev_data->input_crop.height;
>
>         inst->out_width = ev_data->width;
>         inst->out_height = ev_data->height;
> @@ -1412,6 +1419,10 @@ static void vdec_inst_init(struct venus_inst *inst)
>         inst->fmt_cap = &vdec_formats[0];
>         inst->width = frame_width_min(inst);
>         inst->height = ALIGN(frame_height_min(inst), 32);
> +       inst->crop.left = 0;
> +       inst->crop.top = 0;
> +       inst->crop.width = inst->width;
> +       inst->crop.height = inst->height;
>         inst->out_width = frame_width_min(inst);
>         inst->out_height = frame_height_min(inst);
>         inst->fps = 30;
> --
> 2.28.0.1011.ga647a8990f-goog
>