static int ao_opensl_get_parameter(ao_wrapper_t *ao, int cmd, unsigned long arg)
{
switch (cmd) {
case DTP_AO_CMD_GET_LATENCY:
*(int *)(arg) = ao_opensl_get_latency(ao);
break;
case DTP_AO_CMD_GET_LEVEL:
*(int *)(arg) = ao_opensl_level(ao);
break;
case DTP_AO_CMD_GET_VOLUME:
*(int *)(arg) = ao_opensl_get_volume(ao);
break;
}
return 0;
}
static int64_t ao_opensl_get_latency(dtaudio_output_t *aout) {
int64_t latency;
int ret = 0;
int level = 0;
aout_sys_t *sys = (aout_sys_t *) aout->ao_priv;
#if 1
TimeGet(aout, &latency);
if (latency == -1)
return 0;
latency = 9 * latency / 100;
#else
dtaudio_para_t *para = &aout->para;
level = ao_opensl_level(aout);
int sample_num;
float pts_ratio = 0.0;
pts_ratio = (double) 90000 / para->dst_samplerate;
sample_num = level / bytesPerSample(aout);
latency += (sample_num * pts_ratio);
#endif
//__android_log_print(ANDROID_LOG_DEBUG,TAG, "opensl latency, level:%d latency:%lld \n",level, latency);
return latency;
}
