drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h

   1 /*
   2  * Broadcom BM2835 V4L2 driver
   3  *
   4  * Copyright © 2013 Raspberry Pi (Trading) Ltd.
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file COPYING in the main directory of this archive
   8  * for more details.
   9  *
  10  * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
  11  *          Dave Stevenson <dsteve@broadcom.com>
  12  *          Simon Mellor <simellor@broadcom.com>
  13  *          Luke Diamand <luked@broadcom.com>
  14  *
  15  * core driver device
  16  */
  17
  18 #define V4L2_CTRL_COUNT 29 /* number of v4l controls */
  19
  20 enum {
  21         MMAL_COMPONENT_CAMERA = 0,
  22         MMAL_COMPONENT_PREVIEW,
  23         MMAL_COMPONENT_IMAGE_ENCODE,
  24         MMAL_COMPONENT_VIDEO_ENCODE,
  25         MMAL_COMPONENT_COUNT
  26 };
  27
  28 enum {
  29         MMAL_CAMERA_PORT_PREVIEW = 0,
  30         MMAL_CAMERA_PORT_VIDEO,
  31         MMAL_CAMERA_PORT_CAPTURE,
  32         MMAL_CAMERA_PORT_COUNT
  33 };
  34
  35 #define PREVIEW_LAYER      2
  36
  37 extern int bcm2835_v4l2_debug;
  38
  39 struct bm2835_mmal_dev {
  40         /* v4l2 devices */
  41         struct v4l2_device     v4l2_dev;
  42         struct video_device    vdev;
  43         struct mutex           mutex;
  44
  45         /* controls */
  46         struct v4l2_ctrl_handler  ctrl_handler;
  47         struct v4l2_ctrl          *ctrls[V4L2_CTRL_COUNT];
  48         enum v4l2_scene_mode      scene_mode;
  49         struct mmal_colourfx      colourfx;
  50         int                       hflip;
  51         int                       vflip;
  52         int                       red_gain;
  53         int                       blue_gain;
  54         enum mmal_parameter_exposuremode exposure_mode_user;
  55         enum v4l2_exposure_auto_type exposure_mode_v4l2_user;
  56         /* active exposure mode may differ if selected via a scene mode */
  57         enum mmal_parameter_exposuremode exposure_mode_active;
  58         enum mmal_parameter_exposuremeteringmode metering_mode;
  59         unsigned int              manual_shutter_speed;
  60         bool                      exp_auto_priority;
  61         bool manual_iso_enabled;
  62         u32 iso;
  63
  64         /* allocated mmal instance and components */
  65         struct vchiq_mmal_instance   *instance;
  66         struct vchiq_mmal_component  *component[MMAL_COMPONENT_COUNT];
  67         int camera_use_count;
  68
  69         struct v4l2_window overlay;
  70
  71         struct {
  72                 unsigned int     width;  /* width */
  73                 unsigned int     height;  /* height */
  74                 unsigned int     stride;  /* stride */
  75                 unsigned int     buffersize; /* buffer size with padding */
  76                 struct mmal_fmt  *fmt;
  77                 struct v4l2_fract timeperframe;
  78
  79                 /* H264 encode bitrate */
  80                 int         encode_bitrate;
  81                 /* H264 bitrate mode. CBR/VBR */
  82                 int         encode_bitrate_mode;
  83                 /* H264 profile */
  84                 enum v4l2_mpeg_video_h264_profile enc_profile;
  85                 /* H264 level */
  86                 enum v4l2_mpeg_video_h264_level enc_level;
  87                 /* JPEG Q-factor */
  88                 int         q_factor;
  89
  90                 struct vb2_queue        vb_vidq;
  91
  92                 /* VC start timestamp for streaming */
  93                 s64         vc_start_timestamp;
  94                 /* Kernel start timestamp for streaming */
  95                 struct timeval kernel_start_ts;
  96
  97                 struct vchiq_mmal_port  *port; /* port being used for capture */
  98                 /* camera port being used for capture */
  99                 struct vchiq_mmal_port  *camera_port;
 100                 /* component being used for encode */
 101                 struct vchiq_mmal_component *encode_component;
 102                 /* number of frames remaining which driver should capture */
 103                 unsigned int  frame_count;
 104                 /* last frame completion */
 105                 struct completion  frame_cmplt;
 106
 107         } capture;
 108
 109         unsigned int camera_num;
 110         unsigned int max_width;
 111         unsigned int max_height;
 112         unsigned int rgb_bgr_swapped;
 113 };
 114
 115 int bm2835_mmal_init_controls(
 116                         struct bm2835_mmal_dev *dev,
 117                         struct v4l2_ctrl_handler *hdl);
 118
 119 int bm2835_mmal_set_all_camera_controls(struct bm2835_mmal_dev *dev);
 120 int set_framerate_params(struct bm2835_mmal_dev *dev);
 121
 122 /* Debug helpers */
 123
 124 #define v4l2_dump_pix_format(level, debug, dev, pix_fmt, desc)  \
 125 {       \
 126         v4l2_dbg(level, debug, dev,     \
 127 "%s: w %u h %u field %u pfmt 0x%x bpl %u sz_img %u colorspace 0x%x priv %u\n", \
 128                 desc,   \
 129                 (pix_fmt)->width, (pix_fmt)->height, (pix_fmt)->field,  \
 130                 (pix_fmt)->pixelformat, (pix_fmt)->bytesperline,        \
 131                 (pix_fmt)->sizeimage, (pix_fmt)->colorspace, (pix_fmt)->priv); \
 132 }
 133 #define v4l2_dump_win_format(level, debug, dev, win_fmt, desc)  \
 134 {       \
 135         v4l2_dbg(level, debug, dev,     \
 136 "%s: w %u h %u l %u t %u  field %u chromakey %06X clip %p " \
 137 "clipcount %u bitmap %p\n", \
 138                 desc,   \
 139                 (win_fmt)->w.width, (win_fmt)->w.height, \
 140                 (win_fmt)->w.left, (win_fmt)->w.top, \
 141                 (win_fmt)->field,       \
 142                 (win_fmt)->chromakey,   \
 143                 (win_fmt)->clips, (win_fmt)->clipcount, \
 144                 (win_fmt)->bitmap); \
 145 }