target/linux/bcm27xx/patches-5.15/950-0402-bcm2835-Allow-compressed-frames-to-set-sizeimage-438.patch

   1 From 1e84fba295e3335427ddd9014059617b430077d8 Mon Sep 17 00:00:00 2001
   2 From: jc-kynesim <jc@kynesim.co.uk>
   3 Date: Fri, 11 Jun 2021 15:14:31 +0100
   4 Subject: [PATCH] bcm2835: Allow compressed frames to set sizeimage
   5  (#4386)
   6
   7 Allow the user to set sizeimage in TRY_FMT and S_FMT if the format
   8 flags have V4L2_FMT_FLAG_COMPRESSED set
   9
  10 Signed-off-by: John Cox <jc@kynesim.co.uk>
  11 ---
  12  .../bcm2835-codec/bcm2835-v4l2-codec.c          | 17 ++++++++++++++---
  13  1 file changed, 14 insertions(+), 3 deletions(-)
  14
  15 --- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
  16 +++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
  17 @@ -1291,6 +1291,8 @@ static int vidioc_g_fmt_vid_cap(struct f
  18  static int vidioc_try_fmt(struct bcm2835_codec_ctx *ctx, struct v4l2_format *f,
  19                           struct bcm2835_codec_fmt *fmt)
  20  {
  21 +       unsigned int sizeimage;
  22 +
  23         /*
  24          * The V4L2 specification requires the driver to correct the format
  25          * struct if any of the dimensions is unsupported
  26 @@ -1319,9 +1321,18 @@ static int vidioc_try_fmt(struct bcm2835
  27         f->fmt.pix_mp.num_planes = 1;
  28         f->fmt.pix_mp.plane_fmt[0].bytesperline =
  29                 get_bytesperline(f->fmt.pix_mp.width, fmt);
  30 -       f->fmt.pix_mp.plane_fmt[0].sizeimage =
  31 -               get_sizeimage(f->fmt.pix_mp.plane_fmt[0].bytesperline,
  32 -                             f->fmt.pix_mp.width, f->fmt.pix_mp.height, fmt);
  33 +       sizeimage = get_sizeimage(f->fmt.pix_mp.plane_fmt[0].bytesperline,
  34 +                                 f->fmt.pix_mp.width, f->fmt.pix_mp.height,
  35 +                                 fmt);
  36 +       /*
  37 +        * Drivers must set sizeimage for uncompressed formats
  38 +        * Compressed formats allow the client to request an alternate
  39 +        * size for the buffer.
  40 +        */
  41 +       if (!(fmt->flags & V4L2_FMT_FLAG_COMPRESSED) ||
  42 +           f->fmt.pix_mp.plane_fmt[0].sizeimage < sizeimage)
  43 +               f->fmt.pix_mp.plane_fmt[0].sizeimage = sizeimage;
  44 +
  45         memset(f->fmt.pix_mp.plane_fmt[0].reserved, 0,
  46                sizeof(f->fmt.pix_mp.plane_fmt[0].reserved));
  47