Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 123]

CADPCM
CADPCMCompression
CAGCBOX
CANA_IFACE
CAU
CAudio	Base class for play/record state
CAUDIO_THREAD_MULTI
CbaseHipData
CCALL
Ccallhis
CCARD_LIST
CCOFF_FILE
CComm
CCompression
CCON_THREAD_INFO
CCONF_INFO
CCountry	Container type for country specific data
Ccref_info
CDATA
CDchannelData
CDigitCollect
CDTMF_DIGIT
CERROR
CFACT
CFifo	Abstract base type for Fifo implementations
CFILHEADER
CFMT
CGENERIC_CRITICAL_SECTION
CHip
CHipDataPCI
CHostDSP	Base class for host processor based card types
CHostFifo	Host fifo implementation
CHostToneGen	Host based tone generator implementation
CLinearCompression
Cllc_cat
Cllc_list
Cllc_var
CLogThread
CLOOPSENSE
COBJS
COL_CARD
COL_INFO
COP_CARD
COP_INFO
COpenPri
COPT_FILHEADER
CPCMCompression
CPlay	`Audio` playback state data
CPLAY_FILE_ASYNC_ARGS	Data for `play_file_async_thread()`
Cpri_chan
CPRI_IFACE
CRecord	`Audio` recording state data
CRECORD_FILE_ASYNC_ARGS	Data for `record_file_async_thread()`
CScopedMutex	Simple exception safe mutex sentinel
CSECTION_HEADER
Csoft_bridge_info
CSYMBOL_ENTRY
CTimer	Simple time tracking class
CTMRS
CTONE	Structure to map tones to an identifying character in a dial string
CTONE_INFO
►CToneGen	Base type for the programmable tone generator interface
►CConfig	`ToneGen` configuration data structure
CCadence	Data storage for a `ToneGen` cadence component
CFreq	Data storage for a `ToneGen` frequency component
CException	`ToneGen` runtime exception type
CV4PCI_DSP	DSP interface implementation for OpenLine cards
CV4PCIDspFifo
CV4PCIToneGen	`V4PCI` tone generator specialisation
CVLOG
CVOXCONFIG
Cvoxstate
CVPB_CALL
CVPB_CALL_INFO
CVPB_CARD_INFO	Container type for data returned by `vpb_get_card_info()`
CVPB_CID	Container type for caller id data
CVPB_CID_JP
CVPB_DATA
CVPB_DETECT	Container for programmable tone detector parameters
CVPB_DEV	Container type for device information
CVPB_DIGITS	Digit collection parameters
CVPB_EVENT	Container for VPB event data
CVPB_PLAY	Port playback parameters
CVPB_RECORD	Port recording parameters
CVPB_STRAN	Cadence state transition data for `VPB_DETECT`
CVPB_TONE	Tone definition structure
CVPB_TONE_MAP
CVPB_VLOG	Additional data that may be included in a wav file
CVPB_VOX
CVpbException	VPB api runtime exception type
CVPBHANDLE	Lookup table element for mapping vpb handles to a port on boardnum
CVPBREG	The DSP program "registry" info for each board
CVPBRegister
CVT_DATA
CVT_REG_RW
CVTCore	Support for cards using the `vtcore` driver
CVTCORE_CARD
Cvtcore_chan
CVTCORE_INFO
CWAVE
CWFILE
CWobbly
Cwrapper_s