Implement GammaExpansionEffect using ALU ops instead of texture lookups.

[movit] / effect_chain.h

diff --git a/effect_chain.h b/effect_chain.h
index f0d0003e9c87bf0fcfc83da512c6a6dbd2f62998..6698c6f70e6b7cf5ee0752fce39840613295810f 100644 (file)
--- a/effect_chain.h
+++ b/effect_chain.h
@@ -1,15 +1,18 @@
-#ifndef _EFFECT_CHAIN_H
-#define _EFFECT_CHAIN_H 1
+#ifndef _MOVIT_EFFECT_CHAIN_H
+#define _MOVIT_EFFECT_CHAIN_H 1
 
+#include <GL/glew.h>
+#include <stdio.h>
+#include <map>
 #include <set>
+#include <string>
 #include <vector>
 
-#include "effect.h"
 #include "image_format.h"
-#include "input.h"
 
-class EffectChain;
-class Phase;
+class Effect;
+class Input;
+struct Phase;
 
 // For internal use within Node.
 enum AlphaType {
@@ -22,8 +25,8 @@ enum AlphaType {
 // Whether you want pre- or postmultiplied alpha in the output
 // (see effect.h for a discussion of pre- versus postmultiplied alpha).
 enum OutputAlphaFormat {
-       OUTPUT_ALPHA_PREMULTIPLIED,
-       OUTPUT_ALPHA_POSTMULTIPLIED,
+       OUTPUT_ALPHA_FORMAT_PREMULTIPLIED,
+       OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED,
 };
 
 // A node in the graph; basically an effect and some associated information.
@@ -72,7 +75,7 @@ struct Phase {
        std::vector<Node *> inputs;
 
        std::vector<Node *> effects;  // In order.
-       unsigned output_width, output_height;
+       unsigned output_width, output_height, virtual_output_width, virtual_output_height;
 };
 
 class EffectChain {
@@ -148,9 +151,10 @@ public:
        void insert_node_between(Node *sender, Node *middle, Node *receiver);
 
 private:
-       // Fits a rectangle of the given size to the current aspect ratio
-       // (aspect_nom/aspect_denom) and returns the new width and height.
-       unsigned fit_rectangle_to_aspect(unsigned width, unsigned height);
+       // Make sure the output rectangle is at least large enough to hold
+       // the given input rectangle in both dimensions, and is of the
+       // current aspect ratio (aspect_nom/aspect_denom).
+       void size_rectangle_to_fit(unsigned width, unsigned height, unsigned *output_width, unsigned *output_height);
 
        // Compute the input sizes for all inputs for all effects in a given phase,
        // and inform the effects about the results.    
@@ -225,13 +229,10 @@ private:
        Effect *dither_effect;
 
        std::vector<Input *> inputs;  // Also contained in nodes.
-
-       GLuint fbo;
        std::vector<Phase *> phases;
 
-       GLenum format;
-       unsigned bytes_per_pixel, num_dither_bits;
+       unsigned num_dither_bits;
        bool finalized;
 };
 
-#endif // !defined(_EFFECT_CHAIN_H)
+#endif // !defined(_MOVIT_EFFECT_CHAIN_H)