/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2011 Blender Foundation.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): Blender Foundation,
 *                 Sergey Sharybin
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file DNA_tracking_types.h
 *  \ingroup DNA
 *  \since may-2011
 *  \author Sergey Sharybin
 *
 * Structs used for camera tracking and the movie-clip editor.
 */

#ifndef __DNA_TRACKING_TYPES_H__
#define __DNA_TRACKING_TYPES_H__

#include "DNA_defs.h"
#include "DNA_listBase.h"

/* match-moving data */

struct bGPdata;
struct Image;
struct MovieReconstructedCamera;
struct MovieTrackingCamera;
struct MovieTrackingMarker;
struct MovieTrackingTrack;
struct MovieTracking;

typedef struct MovieReconstructedCamera {
	int framenr;
	float error;
	float mat[4][4];
} MovieReconstructedCamera;

typedef struct MovieTrackingCamera {
	void *intrinsics;   /* intrinsics handle */

	short distortion_model;
	short pad;

	float sensor_width; /* width of CCD sensor */
	float pixel_aspect; /* pixel aspect ratio */
	float focal;        /* focal length */
	short units;        /* units of focal length user is working with */
	short pad1;
	float principal[2]; /* principal point */

	/* Polynomial distortion */
	float k1, k2, k3;   /* polynomial radial distortion */

	/* Division distortion model coefficients */
	float division_k1, division_k2;
} MovieTrackingCamera;

typedef struct MovieTrackingMarker {
	float pos[2];   /* 2d position of marker on frame (in unified 0..1 space) */

	/* corners of pattern in the following order:
	 *
	 *       Y
	 *       ^
	 *       | (3) --- (2)
	 *       |  |       |
	 *       |  |       |
	 *       |  |       |
	 *       | (0) --- (1)
	 *       +-------------> X
	 *
	 * the coordinates are stored relative to pos.
	 */
	float pattern_corners[4][2];

	/* positions of left-bottom and right-top corners of search area (in unified 0..1 units,
	 * relative to marker->pos
	 */
	float search_min[2], search_max[2];

	int framenr;    /* number of frame marker is associated with */
	int flag;       /* Marker's flag (alive, ...) */
} MovieTrackingMarker;

typedef struct MovieTrackingTrack {
	struct MovieTrackingTrack *next, *prev;

	char name[64];  /* MAX_NAME */

	/* ** setings ** */

	/* positions of left-bottom and right-top corners of pattern (in unified 0..1 units,
	 * relative to marker->pos)
	 * moved to marker's corners since planar tracking implementation
	 */
	float pat_min[2] DNA_DEPRECATED, pat_max[2] DNA_DEPRECATED;

	/* positions of left-bottom and right-top corners of search area (in unified 0..1 units,
	 * relative to marker->pos
	 * moved to marker since affine tracking implementation
	 */
	float search_min[2] DNA_DEPRECATED, search_max[2] DNA_DEPRECATED;

	float offset[2];                    /* offset to "parenting" point */

	/* ** track ** */
	int markersnr;                  /* count of markers in track */
	int last_marker;                /* most recently used marker */
	MovieTrackingMarker *markers;   /* markers in track */

	/* ** reconstruction data ** */
	float bundle_pos[3];            /* reconstructed position */
	float error;                    /* average track reprojection error */

	/* ** UI editing ** */
	int flag, pat_flag, search_flag;    /* flags (selection, ...) */
	float color[3];                     /* custom color for track */

	/* ** control how tracking happens */
	short frames_limit;     /* number of frames to be tarcked during single tracking session (if TRACKING_FRAMES_LIMIT is set) */
	short margin;           /* margin from frame boundaries */
	short pattern_match;    /* re-adjust every N frames */

	/* tracking parameters */
	short motion_model;     /* model of the motion for this track */
	int algorithm_flag;    /* flags for the tracking algorithm (use brute, use esm, use pyramid, etc */
	float minimum_correlation;          /* minimal correlation which is still treated as successful tracking */

	struct bGPdata *gpd;        /* grease-pencil data */

	/* Weight of this track.
	 *
	 * Weight defines how much the track affects on the final reconstruction,
	 * usually gets animated in a way so when track has just appeared it's
	 * weight is zero and then it gets faded up.
	 *
	 * Used to prevent jumps of the camera when tracks are appearing or
	 * disappearing.
	 */
	float weight;

	/* track weight especially for 2D stabilization */
	float weight_stab;
} MovieTrackingTrack;

typedef struct MovieTrackingPlaneMarker {
	/* Corners of the plane in the following order:
	 *
	 *       Y
	 *       ^
	 *       | (3) --- (2)
	 *       |  |       |
	 *       |  |       |
	 *       |  |       |
	 *       | (0) --- (1)
	 *       +-------------> X
	 *
	 * The coordinates are stored in frame normalized coordinates.
	 */
	float corners[4][2];

	int framenr;    /* Number of frame plane marker is associated with */
	int flag;       /* Marker's flag (alive, ...) */
} MovieTrackingPlaneMarker;

typedef struct MovieTrackingPlaneTrack {
	struct MovieTrackingPlaneTrack *next, *prev;

	char name[64];  /* MAX_NAME */

	MovieTrackingTrack **point_tracks;  /* Array of point tracks used to define this plane.
	                                     * Each element is a pointer to MovieTrackingTrack. */
	int point_tracksnr, pad;  /* Number of tracks in point_tracks array. */

	MovieTrackingPlaneMarker *markers;   /* Markers in the plane track */
	int markersnr;                       /* Count of markers in track (size of markers array) */

	int flag;    /* flags (selection, ...) */

	struct Image *image;                 /* Image displaying during editing */
	float image_opacity;                 /* Opacity of the image */

	/* Runtime data */
	int last_marker;                     /* Most recently used marker */
} MovieTrackingPlaneTrack;

typedef struct MovieTrackingSettings {
	int flag;

	/* ** default tracker settings */
	short default_motion_model;         /* model of the motion for this track */
	short default_algorithm_flag;       /* flags for the tracking algorithm (use brute, use esm, use pyramid, etc */
	float default_minimum_correlation;  /* minimal correlation which is still treated as successful tracking */
	short default_pattern_size;         /* size of pattern area for new tracks */
	short default_search_size;          /* size of search area for new tracks */
	short default_frames_limit;         /* number of frames to be tarcked during single tracking session (if TRACKING_FRAMES_LIMIT is set) */
	short default_margin;               /* margin from frame boundaries */
	short default_pattern_match;        /* re-adjust every N frames */
	short default_flag;                 /* default flags like color channels used by default */
	float default_weight;               /* default weight of the track */

	short motion_flag;      /* flags describes motion type */

	/* ** common tracker settings ** */
	short speed;            /* speed of tracking */

	/* ** reconstruction settings ** */
	int keyframe1 DNA_DEPRECATED,
		keyframe2 DNA_DEPRECATED;   /* two keyframes for reconstruction initialization
		                             * were moved to per-tracking object settings
		                             */

	int reconstruction_flag;

	/* which camera intrinsics to refine. uses on the REFINE_* flags */
	short refine_camera_intrinsics, pad2;

	/* ** tool settings ** */

	/* set scale */
	float dist;                 /* distance between two bundles used for scene scaling */

	/* cleanup */
	int clean_frames, clean_action;
	float clean_error;

	/* set object scale */
	float object_distance;      /* distance between two bundles used for object scaling */

	int pad3;
} MovieTrackingSettings;

typedef struct MovieTrackingStabilization {
	int flag;
	int tot_track, act_track;       	/* total number of translation tracks and index of active track in list */
	int tot_rot_track, act_rot_track;	/* total number of rotation tracks and index of active track in list */

	/* 2d stabilization */
	float maxscale;         /* max auto-scale factor */
	MovieTrackingTrack *rot_track DNA_DEPRECATED;  /* use TRACK_USE_2D_STAB_ROT on individual tracks instead */

	int anchor_frame;		/* reference point to anchor stabilization offset */
	float target_pos[2];	/* expected target position of frame after raw stabilization, will be subtracted */
	float target_rot;       /* expected target rotation of frame after raw stabilization, will be compensated */
	float scale;			/* zoom factor known to be present on original footage. Also used for autoscale */

	float locinf, scaleinf, rotinf; /* influence on location, scale and rotation */

	int filter;     /* filter used for pixel interpolation */

	/* initialization and run-time data */
	int ok DNA_DEPRECATED;	/* Without effect now, we initialize on every frame. Formerly used for caching of init values */
} MovieTrackingStabilization;

typedef struct MovieTrackingReconstruction {
	int flag;

	float error;        /* average error of reconstruction */

	int last_camera;        /* most recently used camera */
	int camnr;              /* number of reconstructed cameras */
	struct MovieReconstructedCamera *cameras;   /* reconstructed cameras */
} MovieTrackingReconstruction;

typedef struct MovieTrackingObject {
	struct MovieTrackingObject *next, *prev;

	char name[64];          /* Name of tracking object, MAX_NAME */
	int flag;
	float scale;            /* scale of object solution in amera space */

	ListBase tracks;        /* list of tracks use to tracking this object */
	ListBase plane_tracks;  /* list of plane tracks used by this object */
	MovieTrackingReconstruction reconstruction; /* reconstruction data for this object */

	/* reconstruction options */
	int keyframe1, keyframe2;   /* two keyframes for reconstruction initialization */
} MovieTrackingObject;

typedef struct MovieTrackingStats {
	char message[256];
} MovieTrackingStats;

typedef struct MovieTrackingDopesheetChannel {
	struct MovieTrackingDopesheetChannel *next, *prev;

	MovieTrackingTrack *track;  /* motion track for which channel is created */
	int pad;

	char name[64];          /* name of channel */

	int tot_segment;        /* total number of segments */
	int *segments;          /* tracked segments */
	int max_segment, total_frames;  /* longest segment length and total number of tracked frames */
} MovieTrackingDopesheetChannel;

typedef struct MovieTrackingDopesheetCoverageSegment {
	struct MovieTrackingDopesheetCoverageSegment *next, *prev;

	int coverage;
	int start_frame;
	int end_frame;

	int pad;
} MovieTrackingDopesheetCoverageSegment;

typedef struct MovieTrackingDopesheet {
	int ok;                     /* flag if dopesheet information is still relevant */

	short sort_method;          /* method to be used to sort tracks */
	short flag;                 /* dopesheet building flag such as inverted order of sort */

	/* ** runtime stuff ** */

	/* summary */
	ListBase coverage_segments;

	/* detailed */
	ListBase channels;
	int tot_channel;

	int pad;
} MovieTrackingDopesheet;

typedef struct MovieTracking {
	MovieTrackingSettings settings; /* different tracking-related settings */
	MovieTrackingCamera camera;     /* camera intrinsics */
	ListBase tracks;                /* list of tracks used for camera object */
	ListBase plane_tracks;          /* list of plane tracks used by camera object */
	MovieTrackingReconstruction reconstruction; /* reconstruction data for camera object */
	MovieTrackingStabilization stabilization;   /* stabilization data */
	MovieTrackingTrack *act_track;             /* active track */
	MovieTrackingPlaneTrack *act_plane_track;  /* active plane track */

	ListBase objects;
	int objectnr, tot_object;       /* index of active object and total number of objects */

	MovieTrackingStats *stats;      /* statistics displaying in clip editor */

	MovieTrackingDopesheet dopesheet;   /* dopesheet data */
} MovieTracking;

/* MovieTrackingCamera->distortion_model */
enum {
	TRACKING_DISTORTION_MODEL_POLYNOMIAL = 0,
	TRACKING_DISTORTION_MODEL_DIVISION = 1
};

/* MovieTrackingCamera->units */
enum {
	CAMERA_UNITS_PX = 0,
	CAMERA_UNITS_MM = 1
};

/* MovieTrackingMarker->flag */
enum {
	MARKER_DISABLED    = (1 << 0),
	MARKER_TRACKED     = (1 << 1),
	MARKER_GRAPH_SEL_X = (1 << 2),
	MARKER_GRAPH_SEL_Y = (1 << 3),
	MARKER_GRAPH_SEL   = (MARKER_GRAPH_SEL_X | MARKER_GRAPH_SEL_Y)
};

/* MovieTrackingTrack->flag */
enum {
	TRACK_HAS_BUNDLE        = (1 << 1),
	TRACK_DISABLE_RED       = (1 << 2),
	TRACK_DISABLE_GREEN     = (1 << 3),
	TRACK_DISABLE_BLUE      = (1 << 4),
	TRACK_HIDDEN            = (1 << 5),
	TRACK_LOCKED            = (1 << 6),
	TRACK_CUSTOMCOLOR       = (1 << 7),
	TRACK_USE_2D_STAB       = (1 << 8),
	TRACK_PREVIEW_GRAYSCALE = (1 << 9),
	TRACK_DOPE_SEL          = (1 << 10),
	TRACK_PREVIEW_ALPHA     = (1 << 11),
	TRACK_USE_2D_STAB_ROT   = (1 << 12)
};

/* MovieTrackingTrack->motion_model */
enum {
	TRACK_MOTION_MODEL_TRANSLATION                 = 0,
	TRACK_MOTION_MODEL_TRANSLATION_ROTATION        = 1,
	TRACK_MOTION_MODEL_TRANSLATION_SCALE           = 2,
	TRACK_MOTION_MODEL_TRANSLATION_ROTATION_SCALE  = 3,
	TRACK_MOTION_MODEL_AFFINE                      = 4,
	TRACK_MOTION_MODEL_HOMOGRAPHY                  = 5
};

/* MovieTrackingTrack->algorithm_flag */
enum {
	TRACK_ALGORITHM_FLAG_USE_BRUTE			= (1 << 0),
	TRACK_ALGORITHM_FLAG_USE_NORMALIZATION	= (1 << 2),
	TRACK_ALGORITHM_FLAG_USE_MASK			= (1 << 3)
};

/* MovieTrackingTrack->adjframes */
enum {
	TRACK_MATCH_KEYFRAME  = 0,
	TRACK_MATCH_PREVFRAME = 1
};

/* MovieTrackingSettings->flag */
enum {
	TRACKING_SETTINGS_SHOW_DEFAULT_EXPANDED = (1 << 0),
	TRACKING_SETTINGS_SHOW_EXTRA_EXPANDED = (1 << 1)
};

/* MovieTrackingSettings->motion_flag */
enum {
	TRACKING_MOTION_TRIPOD = (1 << 0),

	TRACKING_MOTION_MODAL  = (TRACKING_MOTION_TRIPOD)
};

/* MovieTrackingSettings->speed */
enum {
	TRACKING_SPEED_FASTEST  = 0,
	TRACKING_SPEED_REALTIME = 1,
	TRACKING_SPEED_HALF     = 2,
	TRACKING_SPEED_QUARTER  = 4,
	TRACKING_SPEED_DOUBLE   = 5
};

/* MovieTrackingSettings->reconstruction_flag */
enum {
	/* TRACKING_USE_FALLBACK_RECONSTRUCTION = (1 << 0), */  /* DEPRECATED */
	TRACKING_USE_KEYFRAME_SELECTION      = (1 << 1)
};

/* MovieTrackingSettings->refine_camera_intrinsics */
enum {
	REFINE_FOCAL_LENGTH         = (1 << 0),
	REFINE_PRINCIPAL_POINT      = (1 << 1),
	REFINE_RADIAL_DISTORTION_K1 = (1 << 2),
	REFINE_RADIAL_DISTORTION_K2 = (1 << 4)
};

/* MovieTrackingStrabilization->flag */
enum {
	TRACKING_2D_STABILIZATION   = (1 << 0),
	TRACKING_AUTOSCALE          = (1 << 1),
	TRACKING_STABILIZE_ROTATION = (1 << 2),
	TRACKING_STABILIZE_SCALE    = (1 << 3),
	TRACKING_SHOW_STAB_TRACKS   = (1 << 5)
};

/* MovieTrackingStrabilization->filter */
enum {
	TRACKING_FILTER_NEAREST  = 0,
	TRACKING_FILTER_BILINEAR = 1,
	TRACKING_FILTER_BICUBIC  = 2
};

/* MovieTrackingReconstruction->flag */
enum {
	TRACKING_RECONSTRUCTED = (1 << 0)
};

/* MovieTrackingObject->flag */
enum {
	TRACKING_OBJECT_CAMERA = (1 << 0)
};

enum {
	TRACKING_CLEAN_SELECT         = 0,
	TRACKING_CLEAN_DELETE_TRACK   = 1,
	TRACKING_CLEAN_DELETE_SEGMENT = 2
};

/* MovieTrackingDopesheet->sort_method */
enum {
	TRACKING_DOPE_SORT_NAME          = 0,
	TRACKING_DOPE_SORT_LONGEST       = 1,
	TRACKING_DOPE_SORT_TOTAL         = 2,
	TRACKING_DOPE_SORT_AVERAGE_ERROR = 3
};

/* MovieTrackingDopesheet->flag */
enum {
	TRACKING_DOPE_SORT_INVERSE  = (1 << 0),
	TRACKING_DOPE_SELECTED_ONLY = (1 << 1),
	TRACKING_DOPE_SHOW_HIDDEN   = (1 << 2)
};

/* MovieTrackingDopesheetCoverageSegment->trackness */
enum {
	TRACKING_COVERAGE_BAD        = 0,
	TRACKING_COVERAGE_ACCEPTABLE = 1,
	TRACKING_COVERAGE_OK         = 2
};

/* MovieTrackingPlaneMarker->flag */
enum {
	PLANE_MARKER_DISABLED = (1 << 0),
	PLANE_MARKER_TRACKED  = (1 << 1),
};

/* MovieTrackingPlaneTrack->flag */
enum {
	PLANE_TRACK_HIDDEN  = (1 << 1),
	PLANE_TRACK_LOCKED  = (1 << 2),
	PLANE_TRACK_AUTOKEY = (1 << 3),
};

#endif  /* __DNA_TRACKING_TYPES_H__ */