Use libpng instead of the older libpng12; seemingly fixes compilation on some systems.

[movit] / effect_chain.h

diff --git a/effect_chain.h b/effect_chain.h
index 2e89c3bcc38717473c10f8b05cfffe80a68b9689..c3dadffca3b115bbfdab3553bdbd81050b0ed9f7 100644 (file)
--- a/effect_chain.h
+++ b/effect_chain.h
@@ -222,12 +222,17 @@ public:
        }
        Effect *add_effect(Effect *effect, const std::vector<Effect *> &inputs);
 
-       // Adds an RGB output. Note that you can only have one output.
+       // Adds an RGBA output. Note that you can have at most one RGBA output and one
+       // Y'CbCr output (see below for details).
        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).
+       //
+       // If you have both RGBA and Y'CbCr output, the RGBA output will come
+       // in the last draw buffer. Also, <format> and <alpha_format> must be
+       // identical between the two.
        void add_ycbcr_output(const ImageFormat &format, OutputAlphaFormat alpha_format,
                              const YCbCrFormat &ycbcr_format,
                              YCbCrOutputSplitting output_splitting = YCBCR_OUTPUT_INTERLEAVED);
@@ -298,6 +303,13 @@ public:
        // single-sampler input, or from an RTT texture.
        GLenum get_input_sampler(Node *node, unsigned input_num) const;
 
+       // Whether input <input_num> of <node> corresponds to a single sampler
+       // (see get_input_sampler()). Normally, you should not need to call this;
+       // however, if the input Effect has set override_texture_bounce(),
+       // this will return false, and you could be flexible and check it first
+       // if you want.
+       GLenum has_input_sampler(Node *node, unsigned input_num) const;
+
        // Get the current resource pool assigned to this EffectChain.
        // Primarily to let effects allocate textures as needed.
        // Any resources you get from the pool must be returned to the pool
@@ -388,10 +400,9 @@ private:
        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.
-       YCbCrOutputSplitting output_ycbcr_splitting;  // If output_color_type == OUTPUT_COLOR_YCBCR.
+       bool output_color_rgba, output_color_ycbcr;
+       YCbCrFormat output_ycbcr_format;              // If output_color_ycbcr is true.
+       YCbCrOutputSplitting output_ycbcr_splitting;  // If output_color_ycbcr is true.
 
        std::vector<Node *> nodes;
        std::map<Effect *, Node *> node_map;