In ResampleEffect, split the weight calculation out into its own function that does...

[movit] / resample_effect.h

diff --git a/resample_effect.h b/resample_effect.h
index 73dfc210e9732388e193ed2dcd0eb6cdb31d50a8..1aa459cbaaa3926c1aeabe2cd8f4647d77fd5f29 100644 (file)
--- a/resample_effect.h
+++ b/resample_effect.h
@@ -18,9 +18,11 @@
 #include <epoxy/gl.h>
 #include <assert.h>
 #include <stddef.h>
+#include <memory>
 #include <string>
 
 #include "effect.h"
+#include "fp16.h"
 
 namespace movit {
 
@@ -28,6 +30,22 @@ class EffectChain;
 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();
@@ -103,6 +121,11 @@ private:
        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;
        int last_input_width, last_input_height, last_output_width, last_output_height;