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

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Broadcom BM2835 V4L2 driver
   4  *
   5  * Copyright © 2013 Raspberry Pi (Trading) Ltd.
   6  *
   7  * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk>
   8  *          Dave Stevenson <dsteve@broadcom.com>
   9  *          Simon Mellor <simellor@broadcom.com>
  10  *          Luke Diamand <luked@broadcom.com>
  11  *
  12  * core driver device
  13  */
  14
  15 #define V4L2_CTRL_COUNT 29 /* number of v4l controls */
  16
  17 enum {
  18         MMAL_COMPONENT_CAMERA = 0,
  19         MMAL_COMPONENT_PREVIEW,
  20         MMAL_COMPONENT_IMAGE_ENCODE,
  21         MMAL_COMPONENT_VIDEO_ENCODE,
  22         MMAL_COMPONENT_COUNT
  23 };
  24
  25 enum {
  26         MMAL_CAMERA_PORT_PREVIEW = 0,
  27         MMAL_CAMERA_PORT_VIDEO,
  28         MMAL_CAMERA_PORT_CAPTURE,
  29         MMAL_CAMERA_PORT_COUNT
  30 };
  31
  32 #define PREVIEW_LAYER      2
  33
  34 extern int bcm2835_v4l2_debug;
  35
  36 struct bm2835_mmal_dev {
  37         /* v4l2 devices */
  38         struct v4l2_device     v4l2_dev;
  39         struct video_device    vdev;
  40         struct mutex           mutex;
  41
  42         /* controls */
  43         struct v4l2_ctrl_handler  ctrl_handler;
  44         struct v4l2_ctrl          *ctrls[V4L2_CTRL_COUNT];
  45         enum v4l2_scene_mode      scene_mode;
  46         struct mmal_colourfx      colourfx;
  47         int                       hflip;
  48         int                       vflip;
  49         int                       red_gain;
  50         int                       blue_gain;
  51         enum mmal_parameter_exposuremode exposure_mode_user;
  52         enum v4l2_exposure_auto_type exposure_mode_v4l2_user;
  53         /* active exposure mode may differ if selected via a scene mode */
  54         enum mmal_parameter_exposuremode exposure_mode_active;
  55         enum mmal_parameter_exposuremeteringmode metering_mode;
  56         unsigned int              manual_shutter_speed;
  57         bool                      exp_auto_priority;
  58         bool manual_iso_enabled;
  59         u32 iso;
  60
  61         /* allocated mmal instance and components */
  62         struct vchiq_mmal_instance   *instance;
  63         struct vchiq_mmal_component  *component[MMAL_COMPONENT_COUNT];
  64         int camera_use_count;
  65
  66         struct v4l2_window overlay;
  67
  68         struct {
  69                 unsigned int     width;  /* width */
  70                 unsigned int     height;  /* height */
  71                 unsigned int     stride;  /* stride */
  72                 unsigned int     buffersize; /* buffer size with padding */
  73                 struct mmal_fmt  *fmt;
  74                 struct v4l2_fract timeperframe;
  75
  76                 /* H264 encode bitrate */
  77                 int         encode_bitrate;
  78                 /* H264 bitrate mode. CBR/VBR */
  79                 int         encode_bitrate_mode;
  80                 /* H264 profile */
  81                 enum v4l2_mpeg_video_h264_profile enc_profile;
  82                 /* H264 level */
  83                 enum v4l2_mpeg_video_h264_level enc_level;
  84                 /* JPEG Q-factor */
  85                 int         q_factor;
  86
  87                 struct vb2_queue        vb_vidq;
  88
  89                 /* VC start timestamp for streaming */
  90                 s64         vc_start_timestamp;
  91                 /* Kernel start timestamp for streaming */
  92                 ktime_t kernel_start_ts;
  93
  94                 struct vchiq_mmal_port  *port; /* port being used for capture */
  95                 /* camera port being used for capture */
  96                 struct vchiq_mmal_port  *camera_port;
  97                 /* component being used for encode */
  98                 struct vchiq_mmal_component *encode_component;
  99                 /* number of frames remaining which driver should capture */
 100                 unsigned int  frame_count;
 101                 /* last frame completion */
 102                 struct completion  frame_cmplt;
 103
 104         } capture;
 105
 106         unsigned int camera_num;
 107         unsigned int max_width;
 108         unsigned int max_height;
 109         unsigned int rgb_bgr_swapped;
 110 };
 111
 112 int bm2835_mmal_init_controls(
 113                         struct bm2835_mmal_dev *dev,
 114                         struct v4l2_ctrl_handler *hdl);
 115
 116 int bm2835_mmal_set_all_camera_controls(struct bm2835_mmal_dev *dev);
 117 int set_framerate_params(struct bm2835_mmal_dev *dev);
 118
 119 /* Debug helpers */
 120
 121 #define v4l2_dump_pix_format(level, debug, dev, pix_fmt, desc)  \
 122 {       \
 123         v4l2_dbg(level, debug, dev,     \
 124 "%s: w %u h %u field %u pfmt 0x%x bpl %u sz_img %u colorspace 0x%x priv %u\n", \
 125                 desc,   \
 126                 (pix_fmt)->width, (pix_fmt)->height, (pix_fmt)->field,  \
 127                 (pix_fmt)->pixelformat, (pix_fmt)->bytesperline,        \
 128                 (pix_fmt)->sizeimage, (pix_fmt)->colorspace, (pix_fmt)->priv); \
 129 }
 130 #define v4l2_dump_win_format(level, debug, dev, win_fmt, desc)  \
 131 {       \
 132         v4l2_dbg(level, debug, dev,     \
 133 "%s: w %u h %u l %u t %u  field %u chromakey %06X clip %p " \
 134 "clipcount %u bitmap %p\n", \
 135                 desc,   \
 136                 (win_fmt)->w.width, (win_fmt)->w.height, \
 137                 (win_fmt)->w.left, (win_fmt)->w.top, \
 138                 (win_fmt)->field,       \
 139                 (win_fmt)->chromakey,   \
 140                 (win_fmt)->clips, (win_fmt)->clipcount, \
 141                 (win_fmt)->bitmap); \
 142 }