/*
 * ***** 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) 2013 Blender Foundation.
 * All rights reserved.
 *
 * Contributor(s): Blender Foundation,
 *                 Sergey Sharybin
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef WITH_LIBMV

#include "libmv-capi.h"

#include <cstdlib>
#include <cstring>

/* ************ Logging ************ */

void libmv_initLogging(const char * /*argv0*/)
{
}

void libmv_startDebugLogging(void)
{
}

void libmv_setLoggingVerbosity(int /*verbosity*/)
{
}

/* ************ Planar tracker ************ */

/* TrackRegion (new planar tracker) */
int libmv_trackRegion(const libmv_TrackRegionOptions * /*options*/,
                      const float * /*image1*/, int /*image1_width*/, int /*image1_height*/,
                      const float * /*image2*/, int /*image2_width*/, int /*image2_height*/,
                      const double *x1, const double *y1,
                      libmv_TrackRegionResult *result,
                      double *x2, double *y2)
{
	/* Convert to doubles for the libmv api. The four corners and the center. */
	for (int i = 0; i < 5; ++i) {
		x2[i] = x1[i];
		y2[i] = y1[i];
	}

	result->termination = -1;
	result->termination_reason = "Built without libmv support";
	result->correlation = 0.0;

	return false;
}

void libmv_samplePlanarPatch(const float * /*image*/,
                             int /*width*/, int /*height*/, int /*channels*/,
                             const double * /*xs*/, const double * /*ys*/,
                             int /*num_samples_x*/, int /*num_samples_y*/,
                             const float * /*mask*/,
                             float * /*patch*/,
                             double * /*warped_position_x*/, double * /*warped_position_y*/)
{
	/* TODO(sergey): implement */
}

void libmv_samplePlanarPatchByte(const unsigned char * /*image*/,
                             int /*width*/, int /*height*/, int /*channels*/,
                             const double * /*xs*/, const double * /*ys*/,
                             int /*num_samples_x*/, int /*num_samples_y*/,
                             const float * /*mask*/,
                             unsigned char * /*patch*/,
                             double * /*warped_position_x*/, double * /*warped_position_y*/)
{
	/* TODO(sergey): implement */
}

/* ************ Tracks ************ */

struct libmv_Tracks *libmv_tracksNew(void)
{
	return NULL;
}

void libmv_tracksInsert(struct libmv_Tracks * /*libmv_tracks*/, int /*image*/,
                        int /*track*/, double /*x*/, double /*y*/, double /*weight*/)
{
}

void libmv_tracksDestroy(struct libmv_Tracks * /*libmv_tracks*/)
{
}

/* ************ Reconstruction solver ************ */

struct libmv_Reconstruction *libmv_solveReconstruction(const struct libmv_Tracks * /*libmv_tracks*/,
		const libmv_CameraIntrinsicsOptions * /*libmv_camera_intrinsics_options*/,
		libmv_ReconstructionOptions * /*libmv_reconstruction_options*/,
		reconstruct_progress_update_cb /*progress_update_callback*/,
		void * /*callback_customdata*/)
{
	return NULL;
}

struct libmv_Reconstruction *libmv_solveModal(const struct libmv_Tracks * /*libmv_tracks*/,
		const libmv_CameraIntrinsicsOptions * /*libmv_camera_intrinsics_options*/,
		const libmv_ReconstructionOptions * /*libmv_reconstruction_options*/,
		reconstruct_progress_update_cb /*progress_update_callback*/,
		void * /*callback_customdata*/)
{
	return NULL;
}

int libmv_reprojectionPointForTrack(const struct libmv_Reconstruction * /*libmv_reconstruction*/,
                                     int /*track*/, double /*pos*/[3])
{
	return 0;
}

double libmv_reprojectionErrorForTrack(const struct libmv_Reconstruction * /*libmv_reconstruction*/, int /*track*/)
{
	return 0.0;
}

double libmv_reprojectionErrorForImage(const struct libmv_Reconstruction * /*libmv_reconstruction*/, int /*image*/)
{
	return 0.0;
}

int libmv_reprojectionCameraForImage(const struct libmv_Reconstruction * /*libmv_reconstruction*/, int /*image*/,
                                      double /*mat*/[4][4])
{
	return 0;
}

double libmv_reprojectionError(const struct libmv_Reconstruction * /*libmv_reconstruction*/)
{
	return 0.0;
}

void libmv_reconstructionDestroy(struct libmv_Reconstruction * /*libmv_reconstruction*/)
{
}

/* ************ feature detector ************ */

struct libmv_Features *libmv_detectFeaturesByte(const unsigned char */*image_buffer*/,
                                                int /*width*/, int /*height*/, int /*channels*/,
                                                libmv_DetectOptions */*options*/)
{
	return NULL;
}

struct libmv_Features *libmv_detectFeaturesFloat(const float */*image_buffer*/,
                                                 int /*width*/, int /*height*/, int /*channels*/,
                                                 libmv_DetectOptions */*options*/)
{
	return NULL;
}

int libmv_countFeatures(const struct libmv_Features * /*libmv_features*/)
{
	return 0;
}

void libmv_getFeature(const struct libmv_Features * /*libmv_features*/, int /*number*/,
                      double *x, double *y, double *score, double *size)
{
	*x = 0.0;
	*y = 0.0;
	*score = 0.0;
	*size = 0.0;
}

void libmv_featuresDestroy(struct libmv_Features * /*libmv_features*/)
{
}

/* ************ camera intrinsics ************ */

struct libmv_CameraIntrinsics *libmv_reconstructionExtractIntrinsics(
		struct libmv_Reconstruction * /*libmv_reconstruction*/)
{
	return NULL;
}

struct libmv_CameraIntrinsics *libmv_cameraIntrinsicsNew(
		const libmv_CameraIntrinsicsOptions * /*libmv_camera_intrinsics_options*/)
{
	return NULL;
}

struct libmv_CameraIntrinsics *libmv_cameraIntrinsicsCopy(const libmv_CameraIntrinsics * /*libmvIntrinsics*/)
{
	return NULL;
}

void libmv_cameraIntrinsicsDestroy(struct libmv_CameraIntrinsics * /*libmvIntrinsics*/)
{
}

void libmv_cameraIntrinsicsUpdate(const libmv_CameraIntrinsicsOptions * /*libmv_camera_intrinsics_options*/,
                                  struct libmv_CameraIntrinsics * /*libmv_intrinsics*/)
{
}

void libmv_cameraIntrinsicsSetThreads(struct libmv_CameraIntrinsics * /*libmv_intrinsics*/, int /*threads*/)
{
}

void libmv_cameraIntrinsicsExtractOptions(
	const libmv_CameraIntrinsics */*libmv_intrinsics*/,
	libmv_CameraIntrinsicsOptions *camera_intrinsics_options)
{
	memset(camera_intrinsics_options, 0, sizeof(libmv_CameraIntrinsicsOptions));
	camera_intrinsics_options->focal_length = 1.0;
}

void libmv_cameraIntrinsicsUndistortByte(const struct libmv_CameraIntrinsics * /*libmv_intrinsics*/,
                                         unsigned char *src, unsigned char *dst, int width, int height,
                                         float overscan, int channels)
{
	memcpy(dst, src, channels * width * height * sizeof(unsigned char));
}

void libmv_cameraIntrinsicsUndistortFloat(const struct libmv_CameraIntrinsics * /*libmvIntrinsics*/,
                                          float *src, float *dst, int width, int height, float overscan, int channels)
{
	memcpy(dst, src, channels * width * height * sizeof(float));
}

void libmv_cameraIntrinsicsDistortByte(const struct libmv_CameraIntrinsics *libmvIntrinsics,
                                       unsigned char *src, unsigned char *dst, int width, int height,
                                       float overscan, int channels)
{
	memcpy(dst, src, channels * width * height * sizeof(unsigned char));
}

void libmv_cameraIntrinsicsDistortFloat(const struct libmv_CameraIntrinsics *libmvIntrinsics,
                                        float *src, float *dst, int width, int height, float overscan, int channels)
{
	memcpy(dst, src, channels * width * height * sizeof(float));
}

/* ************ utils ************ */

void libmv_cameraIntrinsicsApply(const libmv_CameraIntrinsicsOptions *libmv_camera_intrinsics_options,
                                 double x, double y, double *x1, double *y1)
{
	double focal_length = libmv_camera_intrinsics_options->focal_length;
	double principal_x = libmv_camera_intrinsics_options->principal_point_x;
	double principal_y = libmv_camera_intrinsics_options->principal_point_y;

	*x1 = x * focal_length + principal_x;
	*y1 = y * focal_length + principal_y;
}

void libmv_cameraIntrinsicsInvert(const libmv_CameraIntrinsicsOptions *libmv_camera_intrinsics_options,
                                  double x, double y, double *x1, double *y1)
{
	double focal_length = libmv_camera_intrinsics_options->focal_length;
	double principal_x = libmv_camera_intrinsics_options->principal_point_x;
	double principal_y = libmv_camera_intrinsics_options->principal_point_y;

	*x1 = (x - principal_x) / focal_length;
	*y1 = (y - principal_y) / focal_length;
}

void libmv_homography2DFromCorrespondencesEuc(double (* /* x1 */)[2], double (* /* x2 */)[2], int /* num_points */,
                                              double H[3][3])
{
	memset(H, 0, sizeof(double[3][3]));
	H[0][0] = 1.0f;
	H[1][1] = 1.0f;
	H[2][2] = 1.0f;
}

#endif  // ifndef WITH_LIBMV
