PaAsiHpiStreamInfo Struct Reference

Data Fields
uint16_t	state
uint32_t	bufferSize
uint32_t	dataSize
uint32_t	frameCounter
uint32_t	auxDataSize
uint32_t	totalBufferedData
uint32_t	availableFrames
int	overflow
int	underflow

Detailed Description

Stream state information, collected together for convenience

Field Documentation

uint32_t PaAsiHpiStreamInfo::auxDataSize

Amount of data (in bytes) in hardware (on-card) buffer. This differs from dataSize if bus mastering (BBM) is used, which introduces another driver-level buffer to which dataSize/bufferSize then refers.

uint32_t PaAsiHpiStreamInfo::availableFrames

Size of immediately available data (for input) or space (for output) in frames. This only checks the first-level buffer (typically host buffer). This amount can be transferred immediately.

uint32_t PaAsiHpiStreamInfo::bufferSize

Size (in bytes) of recording/playback data buffer in HPI driver

uint32_t PaAsiHpiStreamInfo::dataSize

Amount of data (in bytes) available in the buffer

uint32_t PaAsiHpiStreamInfo::frameCounter

Number of frames played/recorded since last stream reset

int PaAsiHpiStreamInfo::overflow

Indicates that hardware buffer is getting too full

uint16_t PaAsiHpiStreamInfo::state

HPI stream state (HPI_STATE_STOPPED, HPI_STATE_PLAYING, etc.)

uint32_t PaAsiHpiStreamInfo::totalBufferedData

Total number of data frames currently buffered by HPI driver (host + hw buffers)

int PaAsiHpiStreamInfo::underflow

Indicates that hardware buffer is getting too empty

---

The documentation for this struct was generated from the following file:

• pa_linux_asihpi.c