Here are the data structures with brief descriptions:

CIC4_ALLOCATOR_CALLBACKS	Contains function pointers used to configure a custom allocator for image buffers
CIC4_BUFFER_POOL	The buffer pool allows allocating additional image buffers for use by the program
CIC4_BUFFER_POOL_CONFIG	Configures the behavior of a IC4_BUFFER_POOL
CIC4_BUFFERPOOL_ALLOCATION_OPTIONS	Contains options to configure the allocation when requesting an image buffer from a buffer pool
CIC4_DEVICE_ENUM	Device enumerator type
CIC4_DEVICE_INFO	Device information type
CIC4_DISPLAY	Represents a display that can be used to display images
CIC4_DISPLAY_STATS	A structure containing display statistics
CIC4_FRAME_METADATA	A structure containing frame metadata
CIC4_GRABBER	Represents an opened video capture device, allowing device configuration and stream setup
CIC4_IMAGE_BUFFER	Represents an image buffer
CIC4_IMAGE_TYPE	Represents an image type, including pixel format and image dimensions
CIC4_IMAGEBUFFER_SAVE_OPTIONS_BMP	Contains image file storage options for bitmap files
CIC4_IMAGEBUFFER_SAVE_OPTIONS_JPEG	Contains image file storage options for Jpeg files
CIC4_IMAGEBUFFER_SAVE_OPTIONS_PNG	Contains image file storage options for PNG files
CIC4_IMAGEBUFFER_SAVE_OPTIONS_TIFF	Contains image file storage options for TIFF files
CIC4_INIT_CONFIG	The library initialization config structure
CIC4_INTERFACE	Device interface type
CIC4_PROPERTY	Represents a property of a component, usually of a video capture device
CIC4_PROPERTY_DIALOG_OPTIONS	A structure containing options customizing the appearance and behavior of the property dialog displayed by the ic4_gui_grabber_show_device_properties() and ic4_gui_show_property_map() functions
CIC4_PROPERTY_LIST	Represents a list of properties
CIC4_PROPERTY_MAP	Represents the property interface of a component, usually a video capture device
CIC4_QUEUESINK_CALLBACKS	Contains function pointers used to specify the behavior of a queue sink
CIC4_QUEUESINK_CONFIG	Configures the behavior of a queue sink
CIC4_QUEUESINK_QUEUE_SIZES	Contains information about the current queue lengths inside the queue sink
CIC4_SINK	Represents a sink, allowing programmatic access to image data
CIC4_SNAPSINK_CONFIG	Configures the behavior of a snap sink
CIC4_STREAM_STATS	Contains statistics counters that can be used to analyze the stream behavior and identify possible bottlenecks
CIC4_VIDEO_WRITER	Represents a video writer