target/linux/brcm2708/patches-3.10/0141-V4L2-Fix-issue-when-switching-down-JPEG-resolution.patch

   1 From 8a529de86bee2dd7e76fc77d0364ace6df3da685 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dsteve@broadcom.com>
   3 Date: Mon, 9 Dec 2013 11:24:55 +0000
   4 Subject: [PATCH 141/196] V4L2: Fix issue when switching down JPEG resolution.
   5
   6 JPEG buffer size calculation is based on input resolution.
   7 Input resolution was being configured after output port
   8 format. Caused failures if switching from one JPEG resolution
   9 to a smaller one.
  10
  11 Signed-off-by: Dave Stevenson <dsteve@broadcom.com>
  12 ---
  13  drivers/media/platform/bcm2835/bcm2835-camera.c | 126 ++++++++++++++----------
  14  1 file changed, 72 insertions(+), 54 deletions(-)
  15
  16 diff --git a/drivers/media/platform/bcm2835/bcm2835-camera.c b/drivers/media/platform/bcm2835/bcm2835-camera.c
  17 index 9fc90a2..4780107 100644
  18 --- a/drivers/media/platform/bcm2835/bcm2835-camera.c
  19 +++ b/drivers/media/platform/bcm2835/bcm2835-camera.c
  20 @@ -955,69 +955,87 @@ static int mmal_setup_components(struct bm2835_mmal_dev *dev,
  21                         camera_port->current_buffer.num =
  22                             camera_port->recommended_buffer.num;
  23
  24 -                       port->format.encoding = mfmt->mmal;
  25 -                       port->format.encoding_variant = 0;
  26 -                       /* Set any encoding specific parameters */
  27 -                       switch (mfmt->mmal_component) {
  28 -                       case MMAL_COMPONENT_VIDEO_ENCODE:
  29 -                               port->format.bitrate =
  30 -                                   dev->capture.encode_bitrate;
  31 -                               break;
  32 -                       case MMAL_COMPONENT_IMAGE_ENCODE:
  33 -                               /* Could set EXIF parameters here */
  34 -                               break;
  35 -                       default:
  36 -                               break;
  37 -                       }
  38 -                       ret = vchiq_mmal_port_set_format(dev->instance, port);
  39 -
  40 +                       ret =
  41 +                           vchiq_mmal_port_connect_tunnel(
  42 +                                       dev->instance,
  43 +                                       camera_port,
  44 +                                       &encode_component->input[0]);
  45                         if (ret) {
  46 -                               v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
  47 -                                        "%s failed to set format\n", __func__);
  48 +                               v4l2_dbg(1, bcm2835_v4l2_debug,
  49 +                                        &dev->v4l2_dev,
  50 +                                        "%s failed to create connection\n",
  51 +                                        __func__);
  52 +                               /* ensure capture is not going to be tried */
  53 +                               dev->capture.port = NULL;
  54                         } else {
  55 +                               port->es.video.width = f->fmt.pix.width;
  56 +                               port->es.video.height = f->fmt.pix.height;
  57 +                               port->es.video.crop.x = 0;
  58 +                               port->es.video.crop.y = 0;
  59 +                               port->es.video.crop.width = f->fmt.pix.width;
  60 +                               port->es.video.crop.height = f->fmt.pix.height;
  61 +                               port->es.video.frame_rate.num =
  62 +                                         dev->capture.timeperframe.denominator;
  63 +                               port->es.video.frame_rate.den =
  64 +                                         dev->capture.timeperframe.numerator;
  65 +
  66 +                               port->format.encoding = mfmt->mmal;
  67 +                               port->format.encoding_variant = 0;
  68 +                               /* Set any encoding specific parameters */
  69 +                               switch (mfmt->mmal_component) {
  70 +                               case MMAL_COMPONENT_VIDEO_ENCODE:
  71 +                                       port->format.bitrate =
  72 +                                           dev->capture.encode_bitrate;
  73 +                                       break;
  74 +                               case MMAL_COMPONENT_IMAGE_ENCODE:
  75 +                                       /* Could set EXIF parameters here */
  76 +                                       break;
  77 +                               default:
  78 +                                       break;
  79 +                               }
  80 +                               ret = vchiq_mmal_port_set_format(dev->instance,
  81 +                                                                port);
  82 +                               if (ret)
  83 +                                       v4l2_dbg(1, bcm2835_v4l2_debug,
  84 +                                                &dev->v4l2_dev,
  85 +                                                "%s failed to set format\n",
  86 +                                                __func__);
  87 +                       }
  88 +
  89 +                       if (!ret) {
  90                                 ret = vchiq_mmal_component_enable(
  91                                                 dev->instance,
  92                                                 encode_component);
  93                                 if (ret) {
  94                                         v4l2_dbg(1, bcm2835_v4l2_debug,
  95 -                                                &dev->v4l2_dev,
  96 -                                                "%s Failed to enable encode components\n",
  97 -                                                __func__);
  98 -                               } else {
  99 -                                       /* configure buffering */
 100 -                                       port->current_buffer.num = 1;
 101 -                                       port->current_buffer.size =
 102 -                                           f->fmt.pix.sizeimage;
 103 -                                       if (port->format.encoding ==
 104 -                                           MMAL_ENCODING_JPEG) {
 105 -                                               v4l2_dbg(1, bcm2835_v4l2_debug,
 106 -                                                        &dev->v4l2_dev,
 107 -                                                        "JPEG - fiddle buffer size\n");
 108 -                                               port->current_buffer.size =
 109 -                                                   (f->fmt.pix.sizeimage <
 110 -                                                    (100 << 10))
 111 -                                                   ? (100 << 10) : f->fmt.pix.
 112 -                                                   sizeimage;
 113 -                                       }
 114 +                                          &dev->v4l2_dev,
 115 +                                          "%s Failed to enable encode components\n",
 116 +                                          __func__);
 117 +                               }
 118 +                       }
 119 +                       if (!ret) {
 120 +                               /* configure buffering */
 121 +                               port->current_buffer.num = 1;
 122 +                               port->current_buffer.size =
 123 +                                   f->fmt.pix.sizeimage;
 124 +                               if (port->format.encoding ==
 125 +                                   MMAL_ENCODING_JPEG) {
 126                                         v4l2_dbg(1, bcm2835_v4l2_debug,
 127 -                                                &dev->v4l2_dev,
 128 -                                                "vid_cap - current_buffer.size being set to %d\n",
 129 -                                                f->fmt.pix.sizeimage);
 130 -                                       port->current_buffer.alignment = 0;
 131 -                                       ret =
 132 -                                           vchiq_mmal_port_connect_tunnel(
 133 -                                                       dev->instance,
 134 -                                                       camera_port,
 135 -                                                       &encode_component->input[0]);
 136 -                                       if (ret) {
 137 -                                               v4l2_dbg(1, bcm2835_v4l2_debug,
 138 -                                                        &dev->v4l2_dev,
 139 -                                                        "%s failed to create connection\n",
 140 -                                                        __func__);
 141 -                                               /* ensure capture is not going to be tried */
 142 -                                               dev->capture.port = NULL;
 143 -                                       }
 144 +                                           &dev->v4l2_dev,
 145 +                                           "JPG - buf size now %d was %d\n",
 146 +                                           f->fmt.pix.sizeimage,
 147 +                                           port->current_buffer.size);
 148 +                                       port->current_buffer.size =
 149 +                                           (f->fmt.pix.sizeimage <
 150 +                                            (100 << 10))
 151 +                                           ? (100 << 10) : f->fmt.pix.
 152 +                                           sizeimage;
 153                                 }
 154 +                               v4l2_dbg(1, bcm2835_v4l2_debug,
 155 +                                        &dev->v4l2_dev,
 156 +                                        "vid_cap - cur_buf.size set to %d\n",
 157 +                                        f->fmt.pix.sizeimage);
 158 +                               port->current_buffer.alignment = 0;
 159                         }
 160                 } else {
 161                         /* configure buffering */
 162 --
 163 1.9.1
 164