target/linux/bcm27xx/patches-5.15/950-0507-staging-bcm2835-codec-Signal-the-firmware-to-stop-on.patch

   1 From 672e3f61cf8bfd8eb578e19a87bc1ce4187cd546 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Thu, 16 Sep 2021 16:39:07 +0100
   4 Subject: [PATCH] staging: bcm2835-codec: Signal the firmware to stop
   5  on all changes
   6
   7 The firmware defaults to not stopping video decode if only the
   8 pixel aspect ratio or colourspace change. V4L2 requires us
   9 to stop decoding on any change, therefore tell the firmware
  10 of the desire for this alternate behaviour.
  11
  12 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  13 ---
  14  .../vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c   | 10 ++++++++++
  15  .../staging/vc04_services/vchiq-mmal/mmal-parameters.h |  3 +++
  16  2 files changed, 13 insertions(+)
  17
  18 --- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
  19 +++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
  20 @@ -2483,6 +2483,16 @@ static int bcm2835_codec_create_componen
  21                                               MMAL_PARAMETER_VIDEO_VALIDATE_TIMESTAMPS,
  22                                               &enable,
  23                                               sizeof(enable));
  24 +               /*
  25 +                * Enable firmware option to stop on colourspace and pixel
  26 +                * aspect ratio changed
  27 +                */
  28 +               enable = 1;
  29 +               vchiq_mmal_port_parameter_set(dev->instance,
  30 +                                             &ctx->component->control,
  31 +                                             MMAL_PARAMETER_VIDEO_STOP_ON_PAR_COLOUR_CHANGE,
  32 +                                             &enable,
  33 +                                             sizeof(enable));
  34         } else if (dev->role == DEINTERLACE) {
  35                 /* Select the default deinterlace algorithm. */
  36                 int half_framerate = 0;
  37 --- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
  38 +++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
  39 @@ -682,6 +682,9 @@ enum mmal_parameter_video_type {
  40
  41         /**< Take a @ref MMAL_PARAMETER_BOOLEAN_T */
  42         MMAL_PARAMETER_VIDEO_VALIDATE_TIMESTAMPS,
  43 +
  44 +       /**< Takes a @ref MMAL_PARAMETER_BOOLEAN_T */
  45 +       MMAL_PARAMETER_VIDEO_STOP_ON_PAR_COLOUR_CHANGE,
  46  };
  47
  48  /** Valid mirror modes */