#include <epoxy/gl.h>
#include <assert.h>
#include <stddef.h>
+#include <memory>
#include <string>
#include "effect.h"
+#include "fp16.h"
namespace movit {
class Node;
class SingleResamplePassEffect;
+// Public so that it can be benchmarked externally.
+template<class T>
+struct Tap {
+ T weight;
+ T pos;
+};
+struct ScalingWeights {
+ unsigned src_bilinear_samples;
+ unsigned dst_samples, num_loops;
+
+ // Exactly one of these is set.
+ std::unique_ptr<Tap<fp16_int_t>[]> bilinear_weights_fp16;
+ std::unique_ptr<Tap<float>[]> bilinear_weights_fp32;
+};
+ScalingWeights calculate_scaling_weights(unsigned src_size, unsigned dst_size, float zoom, float offset);
+
class ResampleEffect : public Effect {
public:
ResampleEffect();
+ ~ResampleEffect();
virtual std::string effect_type_id() const { return "ResampleEffect"; }
void update_size();
void update_offset_and_zoom();
+ // Both of these are owned by us if owns_effects is true (before finalize()),
+ // and otherwise owned by the EffectChain.
+ bool owns_effects;
SingleResamplePassEffect *hpass, *vpass;
int input_width, input_height, output_width, output_height;
float offset_x, offset_y;
float zoom_x, zoom_y;
float zoom_center_x, zoom_center_y;
+ float unused;
};
class SingleResamplePassEffect : public Effect {
public:
- // If parent is non-NULL, calls to inform_input_size will be forwarded,
+ // If parent is non-nullptr, calls to inform_input_size will be forwarded,
// so that it can inform both passes about the right input and output
// resolutions.
SingleResamplePassEffect(ResampleEffect *parent);
virtual void inform_added(EffectChain *chain) { this->chain = chain; }
virtual void inform_input_size(unsigned input_num, unsigned width, unsigned height) {
- if (parent != NULL) {
+ if (parent != nullptr) {
parent->inform_input_size(input_num, width, height);
}
}
virtual bool changes_output_size() const { return true; }
+ virtual bool sets_virtual_output_size() const { return false; }
virtual void get_output_size(unsigned *width, unsigned *height, unsigned *virtual_width, unsigned *virtual_height) const {
*virtual_width = *width = this->output_width;
EffectChain *chain;
Direction direction;
GLuint texnum;
+ GLint uniform_sample_tex;
+ float uniform_num_loops, uniform_slice_height, uniform_sample_x_scale, uniform_sample_x_offset;
+ float uniform_whole_pixel_offset;
+ int uniform_num_samples;
+
int input_width, input_height, output_width, output_height;
float offset, zoom;
+ float unused;
int last_input_width, last_input_height, last_output_width, last_output_height;
float last_offset, last_zoom;
int src_bilinear_samples, num_loops;
float slice_height;
+ int last_texture_width, last_texture_height;
+ GLuint last_texture_internal_format;
};
} // namespace movit