INT64 DAUDIO_GetBytePosition(void* id, int isSource, INT64 javaBytePos) {
DS_Info* info = (DS_Info*) id;
int available, bufferSize;
DWORD playCursor, writeCursor;
INT64 result = javaBytePos;
available = DS_GetAvailable(info, &playCursor, &writeCursor, &bufferSize, /*fromPlayCursor?*/ true);
result = estimatePositionFromAvail(info, javaBytePos, bufferSize, available);
return result;
}
INT64 DAUDIO_GetBytePosition(void* id, int isSource, INT64 javaBytePos) {
AlsaPcmInfo* info = (AlsaPcmInfo*) id;
int ret;
INT64 result = javaBytePos;
snd_pcm_state_t state;
state = snd_pcm_state(info->handle);
if (state != SND_PCM_STATE_XRUN) {
#ifdef GET_POSITION_METHOD2
snd_timestamp_t* ts;
snd_pcm_uframes_t framesAvail;
// note: slight race condition if this is called simultaneously from 2 threads
ret = snd_pcm_status(info->handle, info->positionStatus);
if (ret != 0) {
ERROR1("ERROR in snd_pcm_status: %s\n", snd_strerror(ret));
result = javaBytePos;
} else {
// calculate from time value, or from available bytes
framesAvail = snd_pcm_status_get_avail(info->positionStatus);
result = estimatePositionFromAvail(info, isSource, javaBytePos, framesAvail * info->frameSize);
}
#endif
#ifdef GET_POSITION_METHOD3
snd_pcm_uframes_t framesAvail;
ret = snd_pcm_avail(info->handle, &framesAvail);
if (ret != 0) {
ERROR1("ERROR in snd_pcm_avail: %s\n", snd_strerror(ret));
result = javaBytePos;
} else {
result = estimatePositionFromAvail(info, isSource, javaBytePos, framesAvail * info->frameSize);
}
#endif
#ifdef GET_POSITION_METHOD1
result = estimatePositionFromAvail(info, isSource, javaBytePos, DAUDIO_GetAvailable(id, isSource));
#endif
}
//printf("getbyteposition: javaBytePos=%d , return=%d\n", (int) javaBytePos, (int) result);
return result;
}
