/usr/include/movit/slice_effect.h is in libmovit-dev 1.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | #ifndef _MOVIT_SLICE_EFFECT_H
#define _MOVIT_SLICE_EFFECT_H 1
// SliceEffect takes an image, cuts it into (potentially overlapping) slices,
// and puts those slices back together again consecutively. It is primarily
// useful in an overlap-discard setting, where it can do both the overlap and
// discard roles, where one does convolutions by means of many small FFTs, but
// could also work as a (relatively boring) video effect on its own.
//
// Note that vertical slices happen from the top, consistent with the rest of
// Movit.
#include <epoxy/gl.h>
#include <string>
#include "effect.h"
namespace movit {
class SliceEffect : public Effect {
public:
SliceEffect();
virtual std::string effect_type_id() const { return "SliceEffect"; }
std::string output_fragment_shader();
virtual bool needs_texture_bounce() const { return true; }
virtual bool changes_output_size() const { return true; }
virtual bool sets_virtual_output_size() const { return false; }
virtual void inform_input_size(unsigned input_num, unsigned width, unsigned height);
virtual void get_output_size(unsigned *width, unsigned *height,
unsigned *virtual_width, unsigned *virtual_height) const;
void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);
virtual void inform_added(EffectChain *chain) { this->chain = chain; }
enum Direction { HORIZONTAL = 0, VERTICAL = 1 };
private:
EffectChain *chain;
int input_width, input_height;
int input_slice_size, output_slice_size;
int offset;
Direction direction;
float uniform_output_coord_to_slice_num, uniform_slice_num_to_input_coord;
float uniform_slice_offset_to_input_coord, uniform_offset;
};
} // namespace movit
#endif // !defined(_MOVIT_SLICE_EFFECT_H)
|