std::atomic<unsigned> audio_source_channel{0};
std::unique_ptr<movit::EffectChain> display_chain;
GLuint cbcr_program_num; // Owned by <resource_pool>.
std::atomic<unsigned> audio_source_channel{0};
std::unique_ptr<movit::EffectChain> display_chain;
GLuint cbcr_program_num; // Owned by <resource_pool>.