std::atomic<unsigned> master_clock_channel{0};
std::unique_ptr<movit::EffectChain> display_chain;
GLuint cbcr_program_num; // Owned by <resource_pool>.
+ GLuint cbcr_texture_sampler_uniform;
GLuint cbcr_vbo; // Holds position and texcoord data.
GLuint cbcr_position_attribute_index, cbcr_texcoord_attribute_index;
std::unique_ptr<VideoEncoder> video_encoder;