tracking_stabilize.cc File Reference

#include <climits>
#include "DNA_movieclip_types.h"
#include "DNA_scene_types.h"
#include "RNA_prototypes.hh"
#include "BLI_ghash.h"
#include "BLI_listbase.h"
#include "BLI_math_geom.h"
#include "BLI_math_rotation.h"
#include "BLI_math_vector.h"
#include "BLI_sort_utils.h"
#include "BLI_task.h"
#include "BKE_fcurve.hh"
#include "BKE_movieclip.h"
#include "BKE_tracking.h"
#include "IMB_colormanagement.hh"
#include "IMB_imbuf.hh"
#include "IMB_imbuf_types.hh"
#include "IMB_interp.hh"
#include "MEM_guardedalloc.h"

Go to the source code of this file.

Classes
struct	TrackStabilizationBase
struct	TrackInitOrder
struct	StabContext
struct	TrackingStabilizeFrameInterpolationData

Functions
static TrackStabilizationBase *	access_stabilization_baseline_data (StabContext *ctx, MovieTrackingTrack *track)
static void	attach_stabilization_baseline_data (StabContext *ctx, MovieTrackingTrack *track, TrackStabilizationBase *private_data)
static void	discard_stabilization_baseline_data (void *val)
static FCurve *	retrieve_stab_animation (MovieClip *clip, const char *data_path, int idx)
static FCurve *	retrieve_track_weight_animation (MovieClip *clip, MovieTrackingTrack *track)
static float	fetch_from_fcurve (const FCurve *animationCurve, int framenr, StabContext *ctx, float default_value)
static float	get_animated_locinf (StabContext *ctx, int framenr)
static float	get_animated_rotinf (StabContext *ctx, int framenr)
static float	get_animated_scaleinf (StabContext *ctx, int framenr)
static void	get_animated_target_pos (StabContext *ctx, int framenr, float target_pos[2])
static float	get_animated_target_rot (StabContext *ctx, int framenr)
static float	get_animated_target_scale (StabContext *ctx, int framenr)
static float	get_animated_weight (StabContext *ctx, MovieTrackingTrack *track, int framenr)
static void	use_values_from_fcurves (StabContext *ctx, bool toggle)
static StabContext *	init_stabilization_working_context (MovieClip *clip)
static void	discard_stabilization_working_context (StabContext *ctx)
static bool	is_init_for_stabilization (StabContext *ctx, MovieTrackingTrack *track)
static bool	is_usable_for_stabilization (StabContext *ctx, MovieTrackingTrack *track)
static bool	is_effectively_disabled (StabContext *ctx, MovieTrackingTrack *track, MovieTrackingMarker *marker)
static int	search_closest_marker_index (MovieTrackingTrack *track, int ref_frame)
static void	retrieve_next_higher_usable_frame (StabContext *ctx, MovieTrackingTrack *track, int i, int ref_frame, int *next_higher)
static void	retrieve_next_lower_usable_frame (StabContext *ctx, MovieTrackingTrack *track, int i, int ref_frame, int *next_lower)
static void	find_next_working_frames (StabContext *ctx, int framenr, int *next_lower, int *next_higher)
static MovieTrackingMarker *	get_closest_marker (StabContext *ctx, MovieTrackingTrack *track, int ref_frame)
static MovieTrackingMarker *	get_tracking_data_point (StabContext *ctx, MovieTrackingTrack *track, int framenr, float *r_weight)
static void	setup_pivot (const float ref_pos[2], float r_pivot[2])
static void	translation_contribution (TrackStabilizationBase *track_ref, MovieTrackingMarker *marker, float result_offset[2])
static float	rotation_contribution (TrackStabilizationBase *track_ref, MovieTrackingMarker *marker, const float aspect, const float pivot[2], float *result_angle, float *result_scale)
static void	compensate_rotation_center (const int size, float aspect, const float angle, const float scale, const float pivot[2], float result_translation[2])
static bool	average_track_contributions (StabContext *ctx, int framenr, float aspect, float r_translation[2], float r_pivot[2], float *r_angle, float *r_scale_step)
static void	average_marker_positions (StabContext *ctx, int framenr, float r_ref_pos[2])
static bool	interpolate_averaged_track_contributions (StabContext *ctx, int framenr, int frame_a, int frame_b, const float aspect, float r_translation[2], float r_pivot[2], float *r_angle, float *r_scale_step)
static int	establish_track_initialization_order (StabContext *ctx, TrackInitOrder *order)
static void	init_track_for_stabilization (StabContext *ctx, MovieTrackingTrack *track, int reference_frame, float aspect, const float average_translation[2], const float pivot[2], const float average_angle, const float average_scale_step)
static void	init_all_tracks (StabContext *ctx, float aspect)
static bool	stabilization_determine_offset_for_frame (StabContext *ctx, int framenr, float aspect, float r_translation[2], float r_pivot[2], float *r_angle, float *r_scale_step)
static void	stabilization_calculate_data (StabContext *ctx, int framenr, int size, float aspect, bool do_compensate, float scale_step, float r_translation[2], float r_pivot[2], float *r_scale, float *r_angle)
static void	stabilization_data_to_mat4 (float pixel_aspect, const float pivot[2], const float translation[2], float scale, float angle, float r_mat[4][4])
static float	calculate_autoscale_factor (StabContext *ctx, int size, float aspect)
static StabContext *	init_stabilizer (MovieClip *clip, int size, float aspect)
void	BKE_tracking_stabilization_data_get (MovieClip *clip, int framenr, int width, int height, float translation[2], float *scale, float *angle)
static void	tracking_stabilize_frame_interpolation_cb (void *__restrict userdata, const int y, const TaskParallelTLS *__restrict)
ImBuf *	BKE_tracking_stabilize_frame (MovieClip *clip, int framenr, ImBuf *ibuf, float translation[2], float *scale, float *angle)
void	BKE_tracking_stabilization_data_to_mat4 (int buffer_width, int buffer_height, float pixel_aspect, float translation[2], float scale, float angle, float r_mat[4][4])

Variables
static float	SCALE_ERROR_LIMIT_BIAS = 0.01f
static float	EPSILON_WEIGHT = 0.005f

Detailed Description

This file contains implementation of 2D image stabilization.

Definition in file tracking_stabilize.cc.

Function Documentation

access_stabilization_baseline_data()

TrackStabilizationBase * access_stabilization_baseline_data ( StabContext * ctx, MovieTrackingTrack * track )

static

Definition at line 102 of file tracking_stabilize.cc.

References BLI_ghash_lookup(), and StabContext::private_track_data.

Referenced by average_track_contributions(), get_animated_weight(), init_all_tracks(), init_track_for_stabilization(), and is_init_for_stabilization().

attach_stabilization_baseline_data()

void attach_stabilization_baseline_data ( StabContext * ctx, MovieTrackingTrack * track, TrackStabilizationBase * private_data )

static

Definition at line 108 of file tracking_stabilize.cc.

References BLI_ghash_insert(), and StabContext::private_track_data.

Referenced by init_all_tracks().

average_marker_positions()

void average_marker_positions ( StabContext * ctx, int framenr, float r_ref_pos[2] )

static

Definition at line 622 of file tracking_stabilize.cc.

References average_marker_positions(), BKE_tracking_object_get_camera(), EPSILON_WEIGHT, get_tracking_data_point(), LISTBASE_FOREACH, MAXFRAME, MINAFRAME, MINFRAME, MovieTrackingMarker::pos, retrieve_next_higher_usable_frame(), retrieve_next_lower_usable_frame(), search_closest_marker_index(), TRACK_USE_2D_STAB, StabContext::tracking, MovieTrackingObject::tracks, use_values_from_fcurves(), and zero_v2().

Referenced by average_marker_positions(), and init_all_tracks().

average_track_contributions()

bool average_track_contributions ( StabContext * ctx, int framenr, float aspect, float r_translation[2], float r_pivot[2], float * r_angle, float * r_scale_step )

static

Definition at line 509 of file tracking_stabilize.cc.

References access_stabilization_baseline_data(), BKE_tracking_object_get_camera(), BLI_assert, EPSILON_WEIGHT, MovieTrackingStabilization::flag, get_tracking_data_point(), is_init_for_stabilization(), LISTBASE_FOREACH, logf, MovieTrackingMarker::pos, rotation_contribution(), setup_pivot(), MovieTracking::stabilization, TRACK_USE_2D_STAB, TRACK_USE_2D_STAB_ROT, StabContext::tracking, TRACKING_2D_STABILIZATION, TRACKING_STABILIZE_ROTATION, TRACKING_STABILIZE_SCALE, MovieTrackingObject::tracks, translation_contribution(), and zero_v2().

Referenced by init_all_tracks(), interpolate_averaged_track_contributions(), and stabilization_determine_offset_for_frame().

BKE_tracking_stabilization_data_get()

void BKE_tracking_stabilization_data_get	(	struct MovieClip *	clip,
		int	framenr,
		int	width,
		int	height,
		float	translation[2],
		float *	scale,
		float *	angle )

Get stabilization data (translation, scaling and angle) for a given frame. Returned data describes how to compensate the detected movement, but with any chosen scale factor already applied and any target frame position already compensated. In case stabilization fails or is disabled, neutral values are returned.

Parameters

framenr	is a frame number, relative to the clip (not relative to the scene timeline).
width	is an effective width of the canvas (square pixels), used to scale the determined translation.

Outputs:

Parameters

translation	of the lateral shift, absolute canvas coordinates (square pixels).
scale	of the scaling to apply.
angle	of the rotation angle, relative to the frame center.

TODO(sergey): Use r_ prefix for output parameters here.

Definition at line 1249 of file tracking_stabilize.cc.

References angle(), MovieTracking::camera, compensate_rotation_center(), discard_stabilization_working_context(), enabled, MovieTrackingStabilization::flag, float, init_stabilizer(), MovieTrackingCamera::pixel_aspect, size(), MovieTracking::stabilization, stabilization_calculate_data(), stabilization_determine_offset_for_frame(), MovieClip::tracking, TRACKING_2D_STABILIZATION, and zero_v2().

Referenced by BKE_tracking_stabilize_frame(), blender::nodes::node_composite_movieclip_cc::MovieClipOperation::compute_stabilization_data(), blender::nodes::node_composite_stabilize2d_cc::Stabilize2DOperation::execute(), and get_stable_cached_frame().

BKE_tracking_stabilization_data_to_mat4()

void BKE_tracking_stabilization_data_to_mat4	(	int	width,
		int	height,
		float	aspect,
		float	translation[2],
		float	scale,
		float	angle,
		float	mat[4][4] )

Build a 4x4 transformation matrix based on the given 2D stabilization data. mat is a 4x4 matrix in homogeneous coordinates, adapted to the final image buffer size and compensated for pixel aspect ratio, ready for direct OpenGL drawing.

TODO(sergey): The signature of this function should be changed. we actually don't need the dimensions of the image buffer. Instead we should consider to provide the pivot point of the rotation as a further stabilization data parameter.

Definition at line 1453 of file tracking_stabilize.cc.

References angle(), and stabilization_data_to_mat4().

Referenced by BKE_tracking_stabilize_frame(), and clip_draw_main().

BKE_tracking_stabilize_frame()

ImBuf * BKE_tracking_stabilize_frame	(	struct MovieClip *	clip,
		int	framenr,
		struct ImBuf *	ibuf,
		float	translation[2],
		float *	scale,
		float *	angle )

Stabilize given image buffer using stabilization data for a specified frame number.

Note

frame number should be in clip space, not scene space.

TODO(sergey): Use r_ prefix for output parameters here.

Definition at line 1363 of file tracking_stabilize.cc.

References angle(), BKE_tracking_stabilization_data_get(), BKE_tracking_stabilization_data_to_mat4(), BLI_parallel_range_settings_defaults(), BLI_task_parallel_range(), ImBuf::byte_buffer, MovieTracking::camera, copy_v2_v2(), data, ImBufByteBuffer::data, ImBufFloatBuffer::data, MovieTrackingStabilization::filter, MovieTrackingStabilization::flag, ImBuf::float_buffer, IB_byte_data, IB_float_data, IB_RECT_INVALID, IMB_allocImBuf(), IMB_colormanagegent_copy_settings(), invert_m4(), MovieTrackingCamera::pixel_aspect, ImBuf::planes, MovieTracking::stabilization, MovieClip::tracking, TRACKING_2D_STABILIZATION, tracking_stabilize_frame_interpolation_cb(), TaskParallelSettings::use_threading, ImBuf::userflags, ImBuf::x, ImBuf::y, and zero_v2().

Referenced by put_stabilized_frame_to_cache().

calculate_autoscale_factor()

float calculate_autoscale_factor ( StabContext * ctx, int size, float aspect )

static

Definition at line 1108 of file tracking_stabilize.cc.

References add_v2_v2v2(), angle(), BKE_tracking_object_get_camera(), MovieTracking::camera, copy_v2_v2(), cross_v2v2(), dist_to_line_v2(), MovieTrackingStabilization::flag, float, LISTBASE_FOREACH, max_ff(), max_ii(), MovieTrackingStabilization::maxscale, min_ff(), min_ii(), mul_m4_v3(), MovieTrackingCamera::pixel_aspect, size(), StabContext::stab, stabilization_calculate_data(), stabilization_data_to_mat4(), stabilization_determine_offset_for_frame(), sub_v3_v3v3(), TRACK_USE_2D_STAB, TRACK_USE_2D_STAB_ROT, StabContext::tracking, TRACKING_STABILIZE_ROTATION, MovieTrackingObject::tracks, and use_values_from_fcurves().

Referenced by init_stabilizer().

compensate_rotation_center()

void compensate_rotation_center ( const int size, float aspect, const float angle, const float scale, const float pivot[2], float result_translation[2] )

static

Definition at line 475 of file tracking_stabilize.cc.

References add_v2_v2(), angle(), angle_to_mat2(), copy_v2_v2(), mul_m2_v2(), mul_v2_fl(), size(), and sub_v2_v2().

Referenced by BKE_tracking_stabilization_data_get().

discard_stabilization_baseline_data()

void discard_stabilization_baseline_data ( void * val )

static

Definition at line 115 of file tracking_stabilize.cc.

References MEM_freeN().

Referenced by discard_stabilization_working_context().

discard_stabilization_working_context()

void discard_stabilization_working_context ( StabContext * ctx )

static

Discard all private working data attached to this call context.

Note

We allocate the record for the per track baseline contribution locally for each call context (i.e. call to BKE_tracking_stabilization_data_get) Thus it is correct to discard all allocations found within the corresponding local GHash.

Definition at line 229 of file tracking_stabilize.cc.

References BLI_ghash_free(), discard_stabilization_baseline_data(), MEM_freeN(), and StabContext::private_track_data.

Referenced by BKE_tracking_stabilization_data_get().

establish_track_initialization_order()

int establish_track_initialization_order ( StabContext * ctx, TrackInitOrder * order )

static

Definition at line 741 of file tracking_stabilize.cc.

References abs, MovieTrackingStabilization::anchor_frame, BKE_tracking_object_get_camera(), BLI_sortutil_cmp_int(), TrackInitOrder::data, MovieTrackingMarker::framenr, get_closest_marker(), LISTBASE_FOREACH, TrackInitOrder::reference_frame, TrackInitOrder::sort_value, MovieTracking::stabilization, TRACK_USE_2D_STAB, TRACK_USE_2D_STAB_ROT, StabContext::tracking, and MovieTrackingObject::tracks.

Referenced by init_all_tracks().

fetch_from_fcurve()

float fetch_from_fcurve ( const FCurve * animationCurve, int framenr, StabContext * ctx, float default_value )

static

Definition at line 139 of file tracking_stabilize.cc.

References BKE_movieclip_remap_clip_to_scene_frame(), StabContext::clip, evaluate_fcurve(), and StabContext::use_animation.

Referenced by get_animated_locinf(), get_animated_rotinf(), get_animated_scaleinf(), get_animated_target_pos(), get_animated_target_rot(), and get_animated_target_scale().

find_next_working_frames()

void find_next_working_frames ( StabContext * ctx, int framenr, int * next_lower, int * next_higher )

static

Definition at line 302 of file tracking_stabilize.cc.

References BKE_tracking_object_get_camera(), is_usable_for_stabilization(), LISTBASE_FOREACH, retrieve_next_higher_usable_frame(), retrieve_next_lower_usable_frame(), search_closest_marker_index(), StabContext::tracking, and MovieTrackingObject::tracks.

Referenced by stabilization_determine_offset_for_frame().

get_animated_locinf()

float get_animated_locinf ( StabContext * ctx, int framenr )

static

Definition at line 151 of file tracking_stabilize.cc.

References fetch_from_fcurve(), MovieTrackingStabilization::locinf, StabContext::locinf, and StabContext::stab.

Referenced by stabilization_calculate_data().

get_animated_rotinf()

float get_animated_rotinf ( StabContext * ctx, int framenr )

static

Definition at line 156 of file tracking_stabilize.cc.

References fetch_from_fcurve(), MovieTrackingStabilization::rotinf, StabContext::rotinf, and StabContext::stab.

Referenced by stabilization_calculate_data().

get_animated_scaleinf()

float get_animated_scaleinf ( StabContext * ctx, int framenr )

static

Definition at line 161 of file tracking_stabilize.cc.

References fetch_from_fcurve(), MovieTrackingStabilization::scaleinf, StabContext::scaleinf, and StabContext::stab.

Referenced by stabilization_calculate_data().

get_animated_target_pos()

void get_animated_target_pos ( StabContext * ctx, int framenr, float target_pos[2] )

static

Definition at line 166 of file tracking_stabilize.cc.

References fetch_from_fcurve(), StabContext::stab, MovieTrackingStabilization::target_pos, and StabContext::target_pos.

Referenced by stabilization_calculate_data().

get_animated_target_rot()

float get_animated_target_rot ( StabContext * ctx, int framenr )

static

Definition at line 172 of file tracking_stabilize.cc.

References fetch_from_fcurve(), StabContext::stab, MovieTrackingStabilization::target_rot, and StabContext::target_rot.

Referenced by stabilization_calculate_data().

get_animated_target_scale()

float get_animated_target_scale ( StabContext * ctx, int framenr )

static

Definition at line 177 of file tracking_stabilize.cc.

References fetch_from_fcurve(), MovieTrackingStabilization::scale, StabContext::stab, and StabContext::target_scale.

Referenced by stabilization_calculate_data().

get_animated_weight()

float get_animated_weight ( StabContext * ctx, MovieTrackingTrack * track, int framenr )

static

Definition at line 182 of file tracking_stabilize.cc.

References access_stabilization_baseline_data(), BKE_movieclip_remap_clip_to_scene_frame(), StabContext::clip, evaluate_fcurve(), TrackStabilizationBase::track_weight_curve, and MovieTrackingTrack::weight_stab.

Referenced by get_tracking_data_point(), and is_effectively_disabled().

get_closest_marker()

MovieTrackingMarker * get_closest_marker ( StabContext * ctx, MovieTrackingTrack * track, int ref_frame )

static

Definition at line 319 of file tracking_stabilize.cc.

References BKE_tracking_marker_get_exact(), i, MAXFRAME, MINAFRAME, retrieve_next_higher_usable_frame(), retrieve_next_lower_usable_frame(), and search_closest_marker_index().

Referenced by establish_track_initialization_order().

get_tracking_data_point()

MovieTrackingMarker * get_tracking_data_point ( StabContext * ctx, MovieTrackingTrack * track, int framenr, float * r_weight )

static

Definition at line 341 of file tracking_stabilize.cc.

References BKE_tracking_marker_get_exact(), MovieTrackingMarker::flag, get_animated_weight(), and MARKER_DISABLED.

Referenced by average_marker_positions(), and average_track_contributions().

init_all_tracks()

void init_all_tracks ( StabContext * ctx, float aspect )

static

Definition at line 851 of file tracking_stabilize.cc.

References access_stabilization_baseline_data(), MovieTrackingStabilization::anchor_frame, attach_stabilization_baseline_data(), average_marker_positions(), average_track_contributions(), BKE_tracking_object_get_camera(), BLI_assert, StabContext::clip, TrackInitOrder::data, establish_track_initialization_order(), i, init_track_for_stabilization(), TrackStabilizationBase::is_init_for_stabilization, LISTBASE_FOREACH, MEM_calloc_arrayN(), MEM_callocN(), MEM_freeN(), TrackInitOrder::reference_frame, retrieve_track_weight_animation(), setup_pivot(), MovieTracking::stabilization, TrackStabilizationBase::track_weight_curve, StabContext::tracking, MovieTrackingObject::tracks, and zero_v2().

Referenced by init_stabilizer().

init_stabilization_working_context()

StabContext * init_stabilization_working_context ( MovieClip * clip )

static

Definition at line 203 of file tracking_stabilize.cc.

References BLI_ghash_ptr_new(), StabContext::clip, StabContext::locinf, MEM_callocN(), StabContext::private_track_data, retrieve_stab_animation(), StabContext::rotinf, StabContext::scaleinf, StabContext::stab, MovieTracking::stabilization, StabContext::target_pos, StabContext::target_rot, StabContext::target_scale, MovieClip::tracking, StabContext::tracking, and StabContext::use_animation.

Referenced by init_stabilizer().

init_stabilizer()

StabContext * init_stabilizer ( MovieClip * clip, int size, float aspect )

static

Definition at line 1233 of file tracking_stabilize.cc.

References BLI_assert, calculate_autoscale_factor(), MovieTrackingStabilization::flag, init_all_tracks(), init_stabilization_working_context(), MovieTrackingStabilization::scale, size(), StabContext::stab, TRACKING_AUTOSCALE, and use_values_from_fcurves().

Referenced by BKE_tracking_stabilization_data_get().

init_track_for_stabilization()

void init_track_for_stabilization ( StabContext * ctx, MovieTrackingTrack * track, int reference_frame, float aspect, const float average_translation[2], const float pivot[2], const float average_angle, const float average_scale_step )

static

Definition at line 816 of file tracking_stabilize.cc.

References access_stabilization_baseline_data(), angle(), angle_to_mat2(), atan2f, BKE_tracking_marker_get_exact(), BLI_assert, expf, TrackStabilizationBase::is_init_for_stabilization, len, len_v2(), MovieTrackingMarker::pos, pos, SCALE_ERROR_LIMIT_BIAS, TrackStabilizationBase::stabilization_offset_base, TrackStabilizationBase::stabilization_rotation_base, TrackStabilizationBase::stabilization_scale_base, and sub_v2_v2v2().

Referenced by init_all_tracks().

interpolate_averaged_track_contributions()

bool interpolate_averaged_track_contributions ( StabContext * ctx, int framenr, int frame_a, int frame_b, const float aspect, float r_translation[2], float r_pivot[2], float * r_angle, float * r_scale_step )

static

Definition at line 684 of file tracking_stabilize.cc.

References average_track_contributions(), BLI_assert, float, and interp_v2_v2v2().

Referenced by stabilization_determine_offset_for_frame().

is_effectively_disabled()

bool is_effectively_disabled ( StabContext * ctx, MovieTrackingTrack * track, MovieTrackingMarker * marker )

static

Definition at line 248 of file tracking_stabilize.cc.

References EPSILON_WEIGHT, MovieTrackingMarker::flag, MovieTrackingMarker::framenr, get_animated_weight(), and MARKER_DISABLED.

Referenced by retrieve_next_higher_usable_frame(), and retrieve_next_lower_usable_frame().

is_init_for_stabilization()

bool is_init_for_stabilization ( StabContext * ctx, MovieTrackingTrack * track )

static

Definition at line 237 of file tracking_stabilize.cc.

References access_stabilization_baseline_data(), and TrackStabilizationBase::is_init_for_stabilization.

Referenced by average_track_contributions(), and is_usable_for_stabilization().

is_usable_for_stabilization()

bool is_usable_for_stabilization ( StabContext * ctx, MovieTrackingTrack * track )

static

Definition at line 243 of file tracking_stabilize.cc.

References MovieTrackingTrack::flag, is_init_for_stabilization(), and TRACK_USE_2D_STAB.

Referenced by find_next_working_frames().

retrieve_next_higher_usable_frame()

void retrieve_next_higher_usable_frame ( StabContext * ctx, MovieTrackingTrack * track, int i, int ref_frame, int * next_higher )

static

Definition at line 262 of file tracking_stabilize.cc.

References BLI_assert, MovieTrackingMarker::framenr, i, is_effectively_disabled(), MovieTrackingTrack::markers, and MovieTrackingTrack::markersnr.

Referenced by average_marker_positions(), find_next_working_frames(), and get_closest_marker().

retrieve_next_lower_usable_frame()

void retrieve_next_lower_usable_frame ( StabContext * ctx, MovieTrackingTrack * track, int i, int ref_frame, int * next_lower )

static

Definition at line 280 of file tracking_stabilize.cc.

References BLI_assert, MovieTrackingMarker::framenr, i, is_effectively_disabled(), and MovieTrackingTrack::markers.

Referenced by average_marker_positions(), find_next_working_frames(), and get_closest_marker().

retrieve_stab_animation()

FCurve * retrieve_stab_animation ( MovieClip * clip, const char * data_path, int idx )

static

Definition at line 124 of file tracking_stabilize.cc.

References MovieClip::id, id_data_find_fcurve(), MovieTracking::stabilization, and MovieClip::tracking.

Referenced by init_stabilization_working_context().

retrieve_track_weight_animation()

FCurve * retrieve_track_weight_animation ( MovieClip * clip, MovieTrackingTrack * track )

static

Definition at line 134 of file tracking_stabilize.cc.

References MovieClip::id, and id_data_find_fcurve().

Referenced by init_all_tracks().

rotation_contribution()

float rotation_contribution ( TrackStabilizationBase * track_ref, MovieTrackingMarker * marker, const float aspect, const float pivot[2], float * result_angle, float * result_scale )

static

Definition at line 438 of file tracking_stabilize.cc.

References atan2f, BLI_assert, expf, len, len_v2(), mul_m2_v2(), MovieTrackingMarker::pos, pos, SCALE_ERROR_LIMIT_BIAS, TrackStabilizationBase::stabilization_rotation_base, TrackStabilizationBase::stabilization_scale_base, and sub_v2_v2v2().

Referenced by average_track_contributions().

search_closest_marker_index()

int search_closest_marker_index ( MovieTrackingTrack * track, int ref_frame )

static

Definition at line 256 of file tracking_stabilize.cc.

References BKE_tracking_marker_get(), and MovieTrackingTrack::markers.

Referenced by average_marker_positions(), find_next_working_frames(), and get_closest_marker().

setup_pivot()

void setup_pivot ( const float ref_pos[2], float r_pivot[2] )

static

Definition at line 372 of file tracking_stabilize.cc.

References add_v2_v2(), and zero_v2().

Referenced by average_track_contributions(), and init_all_tracks().

stabilization_calculate_data()

void stabilization_calculate_data ( StabContext * ctx, int framenr, int size, float aspect, bool do_compensate, float scale_step, float r_translation[2], float r_pivot[2], float * r_scale, float * r_angle )

static

Definition at line 1005 of file tracking_stabilize.cc.

References expf, MovieTrackingStabilization::flag, float, get_animated_locinf(), get_animated_rotinf(), get_animated_scaleinf(), get_animated_target_pos(), get_animated_target_rot(), get_animated_target_scale(), mul_v2_fl(), size(), StabContext::stab, sub_v2_v2(), and TRACKING_STABILIZE_SCALE.

Referenced by BKE_tracking_stabilization_data_get(), and calculate_autoscale_factor().

stabilization_data_to_mat4()

void stabilization_data_to_mat4 ( float pixel_aspect, const float pivot[2], const float translation[2], float scale, float angle, float r_mat[4][4] )

static

Definition at line 1060 of file tracking_stabilize.cc.

References add_v2_v2(), angle(), invert_m4_m4(), mul_m4_series, rotate_m4(), size_to_mat4(), sub_v2_v2(), and unit_m4().

Referenced by BKE_tracking_stabilization_data_to_mat4(), and calculate_autoscale_factor().

stabilization_determine_offset_for_frame()

bool stabilization_determine_offset_for_frame ( StabContext * ctx, int framenr, float aspect, float r_translation[2], float r_pivot[2], float * r_angle, float * r_scale_step )

static

Definition at line 937 of file tracking_stabilize.cc.

References average_track_contributions(), find_next_working_frames(), MovieTrackingStabilization::flag, interpolate_averaged_track_contributions(), MAXFRAME, MINAFRAME, MINFRAME, StabContext::stab, TRACKING_2D_STABILIZATION, use_values_from_fcurves(), and zero_v2().

Referenced by BKE_tracking_stabilization_data_get(), and calculate_autoscale_factor().

tracking_stabilize_frame_interpolation_cb()

void tracking_stabilize_frame_interpolation_cb ( void *__restrict userdata, const int y, const TaskParallelTLS * __restrict )

static

Definition at line 1294 of file tracking_stabilize.cc.

References ImBuf::byte_buffer, data, ImBufByteBuffer::data, ImBufFloatBuffer::data, float, ImBuf::float_buffer, blender::imbuf::interpolate_bilinear_border_byte(), blender::imbuf::interpolate_bilinear_border_fl(), blender::imbuf::interpolate_cubic_bspline_byte(), blender::imbuf::interpolate_cubic_bspline_fl(), blender::imbuf::interpolate_nearest_border_byte(), blender::imbuf::interpolate_nearest_border_fl(), mul_v3_m4v3(), TRACKING_FILTER_BICUBIC, TRACKING_FILTER_BILINEAR, ImBuf::x, x, and y.

Referenced by BKE_tracking_stabilize_frame().

translation_contribution()

void translation_contribution ( TrackStabilizationBase * track_ref, MovieTrackingMarker * marker, float result_offset[2] )

static

Definition at line 394 of file tracking_stabilize.cc.

References add_v2_v2v2(), MovieTrackingMarker::pos, and TrackStabilizationBase::stabilization_offset_base.

Referenced by average_track_contributions().

use_values_from_fcurves()

void use_values_from_fcurves ( StabContext * ctx, bool toggle )

static

Definition at line 193 of file tracking_stabilize.cc.

References StabContext::use_animation.

Referenced by average_marker_positions(), calculate_autoscale_factor(), init_stabilizer(), and stabilization_determine_offset_for_frame().

Variable Documentation

EPSILON_WEIGHT

float EPSILON_WEIGHT = 0.005f

static

Definition at line 52 of file tracking_stabilize.cc.

Referenced by average_marker_positions(), average_track_contributions(), and is_effectively_disabled().

SCALE_ERROR_LIMIT_BIAS

float SCALE_ERROR_LIMIT_BIAS = 0.01f

static

Definition at line 46 of file tracking_stabilize.cc.

Referenced by init_track_for_stabilization(), and rotation_contribution().