target/linux/bcm27xx/patches-5.10/950-0400-staging-bcm2835-codec-Ensure-OUTPUT-timestamps-are-a.patch

   1 From 35e371f270fb14320de11b93cbc0f1e1024ff58c Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Wed, 4 Nov 2020 18:31:02 +0000
   4 Subject: [PATCH] staging/bcm2835-codec: Ensure OUTPUT timestamps are
   5  always forwarded
   6
   7 The firmware by default tries to ensure that decoded frame
   8 timestamps always increment. This is counter to the V4L2 API
   9 which wants exactly the OUTPUT queue timestamps passed to the
  10 CAPTURE queue buffers.
  11
  12 Disable the firmware option.
  13
  14 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  15 ---
  16  .../bcm2835-codec/bcm2835-v4l2-codec.c              | 13 +++++++++++++
  17  .../vc04_services/vchiq-mmal/mmal-parameters.h      |  3 +++
  18  2 files changed, 16 insertions(+)
  19
  20 --- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
  21 +++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
  22 @@ -2001,6 +2001,19 @@ static int bcm2835_codec_create_componen
  23                                       MMAL_PARAMETER_ZERO_COPY, &enable,
  24                                       sizeof(enable));
  25
  26 +       if (dev->role == DECODE) {
  27 +               /*
  28 +                * Disable firmware option that ensures decoded timestamps
  29 +                * always increase.
  30 +                */
  31 +               enable = 0;
  32 +               vchiq_mmal_port_parameter_set(dev->instance,
  33 +                                             &ctx->component->output[0],
  34 +                                             MMAL_PARAMETER_VIDEO_VALIDATE_TIMESTAMPS,
  35 +                                             &enable,
  36 +                                             sizeof(enable));
  37 +       }
  38 +
  39         setup_mmal_port_format(ctx, &ctx->q_data[V4L2_M2M_SRC],
  40                                &ctx->component->input[0]);
  41
  42 --- a/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
  43 +++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
  44 @@ -674,6 +674,9 @@ enum mmal_parameter_video_type {
  45
  46         /**< Take a @ref MMAL_PARAMETER_BOOLEAN_T */
  47         MMAL_PARAMETER_VIDEO_ENCODE_HEADERS_WITH_FRAME,
  48 +
  49 +       /**< Take a @ref MMAL_PARAMETER_BOOLEAN_T */
  50 +       MMAL_PARAMETER_VIDEO_VALIDATE_TIMESTAMPS,
  51  };
  52
  53  /** Valid mirror modes */