git.openwrt.org Git - openwrt/staging/rmilecki.git/blob

   1 From 3df60f3d0615c011e91b7d6f39cb9123b2e96530 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Mon, 20 Sep 2021 14:37:17 +0100
   4 Subject: [PATCH] staging: bcm2835-codec: Add support for H&V Flips to
   5  ISP
   6
   7 The ISP can do H & V flips whilst resizing or converting
   8 the image, so expose that via V4L2_CID_[H|V]FLIP.
   9
  10 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  11 ---
  12  .../bcm2835-codec/bcm2835-v4l2-codec.c        | 48 +++++++++++++++++++
  13  1 file changed, 48 insertions(+)
  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 @@ -679,6 +679,9 @@ struct bcm2835_codec_ctx {
  18         enum v4l2_xfer_func     xfer_func;
  19         enum v4l2_quantization  quant;
  20
  21 +       int hflip;
  22 +       int vflip;
  23 +
  24         /* Source and destination queue data */
  25         struct bcm2835_codec_q_data   q_data[2];
  26         s32  bitrate;
  27 @@ -2202,6 +2205,34 @@ static int bcm2835_codec_s_ctrl(struct v
  28                                                     sizeof(mmal_bool));
  29                 break;
  30         }
  31 +       case V4L2_CID_HFLIP:
  32 +       case V4L2_CID_VFLIP: {
  33 +               u32 u32_value;
  34 +
  35 +               if (ctrl->id == V4L2_CID_HFLIP)
  36 +                       ctx->hflip = ctrl->val;
  37 +               else
  38 +                       ctx->vflip = ctrl->val;
  39 +
  40 +               if (!ctx->component)
  41 +                       break;
  42 +
  43 +               if (ctx->hflip && ctx->vflip)
  44 +                       u32_value = MMAL_PARAM_MIRROR_BOTH;
  45 +               else if (ctx->hflip)
  46 +                       u32_value = MMAL_PARAM_MIRROR_HORIZONTAL;
  47 +               else if (ctx->vflip)
  48 +                       u32_value = MMAL_PARAM_MIRROR_VERTICAL;
  49 +               else
  50 +                       u32_value = MMAL_PARAM_MIRROR_NONE;
  51 +
  52 +               ret = vchiq_mmal_port_parameter_set(ctx->dev->instance,
  53 +                                                   &ctx->component->input[0],
  54 +                                                   MMAL_PARAMETER_MIRROR,
  55 +                                                   &u32_value,
  56 +                                                   sizeof(u32_value));
  57 +               break;
  58 +       }
  59
  60         default:
  61                 v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n");
  62 @@ -3152,6 +3183,23 @@ static int bcm2835_codec_open(struct fil
  63         }
  64         break;
  65         case ISP:
  66 +       {
  67 +               v4l2_ctrl_handler_init(hdl, 2);
  68 +
  69 +               v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
  70 +                                 V4L2_CID_HFLIP,
  71 +                                 1, 0, 1, 0);
  72 +               v4l2_ctrl_new_std(hdl, &bcm2835_codec_ctrl_ops,
  73 +                                 V4L2_CID_VFLIP,
  74 +                                 1, 0, 1, 0);
  75 +               if (hdl->error) {
  76 +                       rc = hdl->error;
  77 +                       goto free_ctrl_handler;
  78 +               }
  79 +               ctx->fh.ctrl_handler = hdl;
  80 +               v4l2_ctrl_handler_setup(hdl);
  81 +       }
  82 +       break;
  83         case DEINTERLACE:
  84         {
  85                 v4l2_ctrl_handler_init(hdl, 0);