target/linux/bcm27xx/patches-5.4/950-0746-staging-vc04_services-bcm2835-camera-Request-headers.patch

   1 From 1dbe31a80537e398865442562fd21d4cb3fa6dcc Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Fri, 15 May 2020 13:48:59 +0100
   4 Subject: [PATCH] staging:vc04_services: bcm2835-camera: Request
   5  headers with I-frame
   6
   7 V4L2 wishes to have the codec header bytes in the same buffer as the
   8 first encoded frame, so it does become 1-in 1-out for encoding.
   9 The firmware now has an option to do this, so enable it.
  10
  11 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  12 ---
  13  .../staging/vc04_services/bcm2835-camera/bcm2835-camera.c   | 6 ++++++
  14  1 file changed, 6 insertions(+)
  15
  16 --- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
  17 +++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
  18 @@ -1762,6 +1762,12 @@ static int mmal_init(struct bm2835_mmal_
  19                                               MMAL_PARAMETER_MINIMISE_FRAGMENTATION,
  20                                               &enable,
  21                                               sizeof(enable));
  22 +
  23 +               /* Enable inserting headers into the first frame */
  24 +               vchiq_mmal_port_parameter_set(dev->instance,
  25 +                                             &dev->component[COMP_VIDEO_ENCODE]->control,
  26 +                                             MMAL_PARAMETER_VIDEO_ENCODE_HEADERS_WITH_FRAME,
  27 +                                             &enable, sizeof(enable));
  28         }
  29         ret = bm2835_mmal_set_all_camera_controls(dev);
  30         if (ret < 0) {