Add support for Y'CbCr output.

[movit] / effect_chain.h

diff --git a/effect_chain.h b/effect_chain.h
index 2f088b607feeec92fd3bb98c69be5cafde2329dd..d1ab0a205148bd9d8a22e285a448d758a5fd7e00 100644 (file)
--- a/effect_chain.h
+++ b/effect_chain.h
@@ -29,6 +29,7 @@
 #include <vector>
 
 #include "image_format.h"
+#include "ycbcr.h"
 
 namespace movit {
 
@@ -162,8 +163,15 @@ public:
        }
        Effect *add_effect(Effect *effect, const std::vector<Effect *> &inputs);
 
+       // Adds an RGB output. Note that you can only have one output.
        void add_output(const ImageFormat &format, OutputAlphaFormat alpha_format);
 
+       // Adds an YCbCr output. Note that you can only have one output.
+       // Currently, only chunked packed output is supported, and only 4:4:4
+       // (so chroma_subsampling_x and chroma_subsampling_y must both be 1).
+       void add_ycbcr_output(const ImageFormat &format, OutputAlphaFormat alpha_format,
+                             const YCbCrFormat &ycbcr_format);
+
        // Set number of output bits, to scale the dither.
        // 8 is the right value for most outputs.
        // The default, 0, is a special value that means no dither.
@@ -303,12 +311,17 @@ private:
        void fix_internal_gamma_by_asking_inputs(unsigned step);
        void fix_internal_gamma_by_inserting_nodes(unsigned step);
        void fix_output_gamma();
+       void add_ycbcr_conversion_if_needed();
        void add_dither_if_needed();
 
        float aspect_nom, aspect_denom;
        ImageFormat output_format;
        OutputAlphaFormat output_alpha_format;
 
+       enum OutputColorType { OUTPUT_COLOR_RGB, OUTPUT_COLOR_YCBCR };
+       OutputColorType output_color_type;
+       YCbCrFormat output_ycbcr_format;  // If output_color_type == OUTPUT_COLOR_YCBCR.
+
        std::vector<Node *> nodes;
        std::map<Effect *, Node *> node_map;
        Effect *dither_effect;