PaAsiHpiStreamInfo Struct Reference

Data Fields
HW16	state
HW32	bufferSize
HW32	dataSize
HW32	frameCounter
HW32	auxDataSize
HW32	totalBufferedData
HW32	availableFrames
int	overflow
int	underflow

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Detailed Description

Stream state information, collected together for convenience

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Field Documentation

HW32 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.

HW32 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.

HW32 PaAsiHpiStreamInfo::bufferSize

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

HW32 PaAsiHpiStreamInfo::dataSize

Amount of data (in bytes) available in the buffer

HW32 PaAsiHpiStreamInfo::frameCounter

Number of frames played/recorded since last stream reset

int PaAsiHpiStreamInfo::overflow

Indicates that hardware buffer is getting too full

HW16 PaAsiHpiStreamInfo::state

HPI stream state (HPI_STATE_STOPPED, HPI_STATE_PLAYING, etc.)

HW32 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

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

• pa_linux_asihpi.c