X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=resample_effect.h;h=af6a79f0227ced59522e57ced1a865d7b11a9df0;hp=b06b09b57ae9af67f18e938396adc8ab8ddbdd0d;hb=b3816fb6d789ea3a682193128ea7a00aef8fa91c;hpb=9c12e38b7cd88a77ef297d080b7c41e6bd6326fb

diff --git a/resample_effect.h b/resample_effect.h
index b06b09b..af6a79f 100644
--- 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 {
 
@@ -28,9 +30,26 @@ 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();
+	~ResampleEffect();
 
 	virtual std::string effect_type_id() const { return "ResampleEffect"; }
 
@@ -55,17 +74,21 @@ private:
 	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);
@@ -80,7 +103,7 @@ public:
 
 	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);
 		}
 	}
@@ -110,6 +133,7 @@ private:
 
 	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;