Make FlatInput and YCbCrInput support taking in external OpenGL textures.

[movit] / ycbcr_input.h

diff --git a/ycbcr_input.h b/ycbcr_input.h
index 282b55aaac2d1fe19dd3ef7bae9649e04ab1a54a..6f4b66d437b1e5cc140e0fa10264bbc24115f6f2 100644 (file)
--- a/ycbcr_input.h
+++ b/ycbcr_input.h
@@ -85,6 +85,16 @@ public:
                invalidate_pixel_data();
        }
 
+       // Tells the input to use the specific OpenGL texture as pixel data for the given
+       // channel. The comments on FlatInput::set_texture_num() also apply here, except
+       // that this input generally does not use mipmaps.
+       void set_texture_num(unsigned channel, GLuint texture_num)
+       {
+               possibly_release_texture(channel);
+               this->texture_num[channel] = texture_num;
+               this->owns_texture[channel] = false;
+       }
+
        virtual void inform_added(EffectChain *chain)
        {
                resource_pool = chain->get_resource_pool();
@@ -93,6 +103,9 @@ public:
        bool set_int(const std::string& key, int value);
 
 private:
+       // Release the texture in the given channel if we have any, and it is owned by us.
+       void possibly_release_texture(unsigned channel);
+
        ImageFormat image_format;
        YCbCrFormat ycbcr_format;
        GLuint num_channels;
@@ -103,6 +116,7 @@ private:
        unsigned width, height, widths[3], heights[3];
        const unsigned char *pixel_data[3];
        unsigned pitch[3];
+       bool owns_texture[3];
        ResourcePool *resource_pool;
 };