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/*
* 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) 2014 Blender Foundation.
* All rights reserved.
*/
#include "intern/frame_accessor.h"
#include "intern/image.h"
#include "intern/utildefines.h"
#include "libmv/autotrack/frame_accessor.h"
#include "libmv/autotrack/region.h"
#include "libmv/image/image.h"
namespace {
using libmv::FloatImage;
using mv::FrameAccessor;
using mv::Region;
struct LibmvFrameAccessor : public FrameAccessor {
LibmvFrameAccessor(libmv_FrameAccessorUserData* user_data,
libmv_GetImageCallback get_image_callback,
libmv_ReleaseImageCallback release_image_callback,
libmv_GetMaskForTrackCallback get_mask_for_track_callback,
libmv_ReleaseMaskCallback release_mask_callback)
: user_data_(user_data),
get_image_callback_(get_image_callback),
release_image_callback_(release_image_callback),
get_mask_for_track_callback_(get_mask_for_track_callback),
release_mask_callback_(release_mask_callback) {}
virtual ~LibmvFrameAccessor() {}
libmv_InputMode get_libmv_input_mode(InputMode input_mode) {
switch (input_mode) {
#define CHECK_INPUT_MODE(mode) \
case mode: return LIBMV_IMAGE_MODE_##mode;
CHECK_INPUT_MODE(MONO)
CHECK_INPUT_MODE(RGBA)
#undef CHECK_INPUT_MODE
}
assert(!"unknown input mode passed from Libmv.");
// TODO(sergey): Proper error handling here in the future.
return LIBMV_IMAGE_MODE_MONO;
}
void get_libmv_region(const Region& region, libmv_Region* libmv_region) {
libmv_region->min[0] = region.min(0);
libmv_region->min[1] = region.min(1);
libmv_region->max[0] = region.max(0);
libmv_region->max[1] = region.max(1);
}
Key GetImage(int clip,
int frame,
InputMode input_mode,
int downscale,
const Region* region,
const Transform* transform,
FloatImage* destination) {
float* float_buffer;
int width, height, channels;
libmv_Region libmv_region;
if (region) {
get_libmv_region(*region, &libmv_region);
}
Key cache_key = get_image_callback_(user_data_,
clip,
frame,
get_libmv_input_mode(input_mode),
downscale,
region != NULL ? &libmv_region : NULL,
(libmv_FrameTransform*)transform,
&float_buffer,
&width,
&height,
&channels);
// TODO(sergey): Dumb code for until we can set data directly.
FloatImage temp_image(float_buffer, height, width, channels);
destination->CopyFrom(temp_image);
return cache_key;
}
void ReleaseImage(Key cache_key) { release_image_callback_(cache_key); }
Key GetMaskForTrack(int clip,
int frame,
int track,
const Region* region,
FloatImage* destination) {
float* float_buffer;
int width, height;
libmv_Region libmv_region;
if (region) {
get_libmv_region(*region, &libmv_region);
}
Key cache_key =
get_mask_for_track_callback_(user_data_,
clip,
frame,
track,
region != NULL ? &libmv_region : NULL,
&float_buffer,
&width,
&height);
if (cache_key == NULL) {
// No mask for the given track.
return NULL;
}
// TODO(sergey): Dumb code for until we can set data directly.
FloatImage temp_image(float_buffer, height, width, 1);
destination->CopyFrom(temp_image);
return cache_key;
}
void ReleaseMask(Key key) { release_mask_callback_(key); }
bool GetClipDimensions(int /*clip*/, int* /*width*/, int* /*height*/) {
return false;
}
int NumClips() { return 1; }
int NumFrames(int /*clip*/) { return 0; }
libmv_FrameAccessorUserData* user_data_;
libmv_GetImageCallback get_image_callback_;
libmv_ReleaseImageCallback release_image_callback_;
libmv_GetMaskForTrackCallback get_mask_for_track_callback_;
libmv_ReleaseMaskCallback release_mask_callback_;
};
} // namespace
libmv_FrameAccessor* libmv_FrameAccessorNew(
libmv_FrameAccessorUserData* user_data,
libmv_GetImageCallback get_image_callback,
libmv_ReleaseImageCallback release_image_callback,
libmv_GetMaskForTrackCallback get_mask_for_track_callback,
libmv_ReleaseMaskCallback release_mask_callback) {
return (libmv_FrameAccessor*)LIBMV_OBJECT_NEW(LibmvFrameAccessor,
user_data,
get_image_callback,
release_image_callback,
get_mask_for_track_callback,
release_mask_callback);
}
void libmv_FrameAccessorDestroy(libmv_FrameAccessor* frame_accessor) {
LIBMV_OBJECT_DELETE(frame_accessor, LibmvFrameAccessor);
}
int64_t libmv_frameAccessorgetTransformKey(
const libmv_FrameTransform* transform) {
return ((FrameAccessor::Transform*)transform)->key();
}
void libmv_frameAccessorgetTransformRun(const libmv_FrameTransform* transform,
const libmv_FloatImage* input_image,
libmv_FloatImage* output_image) {
const FloatImage input(input_image->buffer,
input_image->height,
input_image->width,
input_image->channels);
FloatImage output;
((FrameAccessor::Transform*)transform)->run(input, &output);
int num_pixels = output.Width() * output.Height() * output.Depth();
output_image->buffer = new float[num_pixels];
memcpy(output_image->buffer, output.Data(), num_pixels * sizeof(float));
output_image->width = output.Width();
output_image->height = output.Height();
output_image->channels = output.Depth();
}
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