-#if LIBAVFORMAT_VERSION_MAJOR < 59
- /**
- * Initialize device capabilities submodule.
- * @see avdevice_capabilities_create() for more details.
- */
- int (*create_device_capabilities)(struct AVFormatContext *s, struct AVDeviceCapabilitiesQuery *caps);
- /**
- * Free device capabilities submodule.
- * @see avdevice_capabilities_free() for more details.
- */
- int (*free_device_capabilities)(struct AVFormatContext *s, struct AVDeviceCapabilitiesQuery *caps);
-#endif