uint32_t AudioStreamOutALSA::latency() const
{
int err;
int t;
snd_pcm_status_t *status;
snd_pcm_status_alloca(&status);
if(mHandle->handle == NULL) {
LOGV("handle is null, error !");
return 0;
}
if ((err = snd_pcm_status(mHandle->handle, status)) < 0) {
LOGV("stream status error :%s\n", snd_strerror(err));
return USEC_TO_MSEC (mHandle->latency);
}
t = snd_pcm_status_get_delay(status);
LOGV("snd_pcm_status_get_delay = %d", t);
LOGV("AudioStreamOutALSA::latency = %d, sampleRate = %d",
(t * 1000) / sampleRate(),
sampleRate());
return (t * 1000) / sampleRate();
}
/*----------------------------------------------------------------------------*/
VOID
nicCmdEventQueryStaStatistics(IN P_ADAPTER_T prAdapter,
IN P_CMD_INFO_T prCmdInfo, IN PUINT_8 pucEventBuf)
{
UINT_32 u4QueryInfoLen;
P_EVENT_STA_STATISTICS_T prEvent;
P_GLUE_INFO_T prGlueInfo;
P_PARAM_GET_STA_STATISTICS prStaStatistics;
ASSERT(prAdapter);
ASSERT(prCmdInfo);
ASSERT(pucEventBuf);
ASSERT(prCmdInfo->pvInformationBuffer);
if (prCmdInfo->fgIsOid) {
prGlueInfo = prAdapter->prGlueInfo;
prEvent = (P_EVENT_STA_STATISTICS_T) pucEventBuf;
prStaStatistics = (P_PARAM_GET_STA_STATISTICS) prCmdInfo->pvInformationBuffer;
u4QueryInfoLen = sizeof(PARAM_GET_STA_STA_STATISTICS);
/* Statistics from FW is valid */
if (prEvent->u4Flags & BIT(0)) {
prStaStatistics->ucPer = prEvent->ucPer;
prStaStatistics->ucRcpi = prEvent->ucRcpi;
prStaStatistics->u4PhyMode = prEvent->u4PhyMode;
prStaStatistics->u2LinkSpeed = prEvent->u2LinkSpeed;
prStaStatistics->u4TxFailCount = prEvent->u4TxFailCount;
prStaStatistics->u4TxLifeTimeoutCount = prEvent->u4TxLifeTimeoutCount;
if (prEvent->u4TxCount) {
UINT_32 u4TxDoneAirTimeMs =
USEC_TO_MSEC(prEvent->u4TxDoneAirTime * 32);
prStaStatistics->u4TxAverageAirTime =
(u4TxDoneAirTimeMs / prEvent->u4TxCount);
} else {
prStaStatistics->u4TxAverageAirTime = 0;
}
}
kalOidComplete(prGlueInfo, prCmdInfo->fgSetQuery, u4QueryInfoLen,
WLAN_STATUS_SUCCESS);
}
}
uint32_t AudioStreamOutALSA::latency() const
{
// Android wants latency in milliseconds.
return USEC_TO_MSEC (mHandle->latency);
}