git.librecmc.org Git - oweals/openwrt.git/blob

   1 From 67c1f9dd0253a1175f77e801b19bd9d923225f9c Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Fri, 10 May 2019 14:13:11 +0100
   4 Subject: [PATCH] staging: bcm2835-codec: Add support for setting
   5  S_PARM and G_PARM
   6
   7 Video encode can use the frame rate for rate control calculations,
   8 therefore plumb it through from V4L2's [S|G]_PARM ioctl.
   9
  10 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  11 ---
  12  .../bcm2835-codec/bcm2835-v4l2-codec.c        | 52 +++++++++++++++++--
  13  1 file changed, 48 insertions(+), 4 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 @@ -447,6 +447,8 @@ struct bcm2835_codec_ctx {
  18         /* Source and destination queue data */
  19         struct bcm2835_codec_q_data   q_data[2];
  20         s32  bitrate;
  21 +       unsigned int    framerate_num;
  22 +       unsigned int    framerate_denom;
  23
  24         bool aborting;
  25         int num_ip_buffers;
  26 @@ -610,8 +612,8 @@ static void setup_mmal_port_format(struc
  27                 port->es.video.height = q_data->height;
  28                 port->es.video.crop.width = q_data->crop_width;
  29                 port->es.video.crop.height = q_data->crop_height;
  30 -               port->es.video.frame_rate.num = 0;
  31 -               port->es.video.frame_rate.den = 1;
  32 +               port->es.video.frame_rate.num = ctx->framerate_num;
  33 +               port->es.video.frame_rate.den = ctx->framerate_denom;
  34         } else {
  35                 /* Compressed format - leave resolution as 0 for decode */
  36                 if (ctx->dev->role == DECODE) {
  37 @@ -625,9 +627,9 @@ static void setup_mmal_port_format(struc
  38                         port->es.video.crop.width = q_data->crop_width;
  39                         port->es.video.crop.height = q_data->crop_height;
  40                         port->format.bitrate = ctx->bitrate;
  41 +                       port->es.video.frame_rate.num = ctx->framerate_num;
  42 +                       port->es.video.frame_rate.den = ctx->framerate_denom;
  43                 }
  44 -               port->es.video.frame_rate.num = 0;
  45 -               port->es.video.frame_rate.den = 1;
  46         }
  47         port->es.video.crop.x = 0;
  48         port->es.video.crop.y = 0;
  49 @@ -1361,6 +1363,41 @@ static int vidioc_s_selection(struct fil
  50         return 0;
  51  }
  52
  53 +static int vidioc_s_parm(struct file *file, void *priv,
  54 +                        struct v4l2_streamparm *parm)
  55 +{
  56 +       struct bcm2835_codec_ctx *ctx = file2ctx(file);
  57 +
  58 +       if (parm->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
  59 +               return -EINVAL;
  60 +
  61 +       ctx->framerate_num =
  62 +                       parm->parm.output.timeperframe.denominator;
  63 +       ctx->framerate_denom =
  64 +                       parm->parm.output.timeperframe.numerator;
  65 +
  66 +       parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
  67 +
  68 +       return 0;
  69 +}
  70 +
  71 +static int vidioc_g_parm(struct file *file, void *priv,
  72 +                        struct v4l2_streamparm *parm)
  73 +{
  74 +       struct bcm2835_codec_ctx *ctx = file2ctx(file);
  75 +
  76 +       if (parm->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
  77 +               return -EINVAL;
  78 +
  79 +       parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
  80 +       parm->parm.output.timeperframe.denominator =
  81 +                       ctx->framerate_num;
  82 +       parm->parm.output.timeperframe.numerator =
  83 +                       ctx->framerate_denom;
  84 +
  85 +       return 0;
  86 +}
  87 +
  88  static int vidioc_subscribe_evt(struct v4l2_fh *fh,
  89                                 const struct v4l2_event_subscription *sub)
  90  {
  91 @@ -1725,6 +1762,9 @@ static const struct v4l2_ioctl_ops bcm28
  92         .vidioc_g_selection     = vidioc_g_selection,
  93         .vidioc_s_selection     = vidioc_s_selection,
  94
  95 +       .vidioc_g_parm          = vidioc_g_parm,
  96 +       .vidioc_s_parm          = vidioc_s_parm,
  97 +
  98         .vidioc_subscribe_event = vidioc_subscribe_evt,
  99         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 100
 101 @@ -2546,6 +2586,8 @@ static int bcm2835_codec_create(struct p
 102         case DECODE:
 103                 v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
 104                 v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
 105 +               v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
 106 +               v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
 107                 video_nr = decode_video_nr;
 108                 break;
 109         case ENCODE:
 110 @@ -2558,6 +2600,8 @@ static int bcm2835_codec_create(struct p
 111                 v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
 112                 v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
 113                 v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
 114 +               v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
 115 +               v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
 116                 video_nr = isp_video_nr;
 117                 break;
 118         default: