static void
NAS_flush (GstNasSink * sink)
{
AuEvent ev;
AuNextEvent (sink->audio, AuTrue, &ev);
AuDispatchEvent (sink->audio, &ev);
}
/* This function waits until it is possible to write a full sound buffer */
static void NAS_WaitAudio(_THIS)
{
while ( this->hidden->buf_free < this->hidden->mixlen ) {
AuEvent ev;
AuNextEvent(this->hidden->aud, AuTrue, &ev);
AuDispatchEvent(this->hidden->aud, &ev);
}
}
static void flush_nas(out123_handle *ao)
{
AuEvent ev;
while ((!info.data_sent) && (!info.finished)) {
AuNextEvent(info.aud, AuTrue, &ev);
AuDispatchEvent(info.aud, &ev);
}
info.data_sent = AuFalse;
}
static void nas_flush()
{
AuEvent ev;
_D(_D_INFO "flush");
while (!info.data_sent && !info.finished) {
AuNextEvent(info.aud, AuTrue, &ev);
AuDispatchEvent(info.aud, &ev);
}
info.data_sent = AuFalse;
}
static int nas_close(WINE_WAVEOUT* wwo)
{
AuEvent ev;
nas_free(wwo);
AuStopFlow(wwo->AuServ, wwo->AuFlow, NULL);
AuDestroyFlow(wwo->AuServ, wwo->AuFlow, NULL);
AuFlush(wwo->AuServ);
AuNextEvent(wwo->AuServ, AuTrue, &ev);
AuDispatchEvent(wwo->AuServ, &ev);
wwo->AuFlow = 0;
wwo->open = 0;
wwo->BufferUsed = 0;
wwo->freeBytes = 0;
wwo->SoundBuffer = NULL;
return 1;
}
void
audio_play(int n,short *data)
{
int endian = 1;
#define little_endian ((*((char *)&endian) == 1))
int priv = 0;
AuEvent ev;
Sound s = SoundCreate(SoundFileFormatNone, little_endian ?
AuFormatLinearSigned16LSB : AuFormatLinearSigned16MSB,
1, samp_rate, n, "Chit chat");
if (aud)
{
#ifdef USE_ALL_ARGS
AuStatus ret_status;
AuFlowID flow = 0;
int monitor = 0;
int multiplier = 0;
if (!AuSoundPlayFromData(aud, s, data, AuNone,
AuFixedPointFromFraction(volume, 100),
done, &priv,
&flow, &multiplier,
&monitor, &ret_status))
#else
if (!AuSoundPlayFromData(aud, s, data, AuNone,
AuFixedPointFromFraction(volume, 100),
done, &priv,
NULL, NULL, NULL, NULL))
#endif
perror("problems playing data");
else
{
while (1)
{
AuNextEvent(aud, AuTrue, &ev);
AuDispatchEvent(aud, &ev);
if (priv)
break;
}
}
}
SoundDestroy(s);
}
static void NAS_PlayAudio(_THIS)
{
while (this->hidden->mixlen > this->hidden->buf_free) { /* We think the buffer is full? Yikes! Ask the server for events,
in the hope that some of them is LowWater events telling us more
of the buffer is free now than what we think. */
AuEvent ev;
AuNextEvent(this->hidden->aud, AuTrue, &ev);
AuDispatchEvent(this->hidden->aud, &ev);
}
this->hidden->buf_free -= this->hidden->mixlen;
/* Write the audio data */
AuWriteElement(this->hidden->aud, this->hidden->flow, 0, this->hidden->mixlen, this->hidden->mixbuf, AuFalse, NULL);
this->hidden->written += this->hidden->mixlen;
#ifdef DEBUG_AUDIO
fprintf(stderr, "Wrote %d bytes of audio data\n", this->hidden->mixlen);
#endif
}
int ao_plugin_play(ao_device *device, const char* output_samples,
uint_32 num_bytes)
{
ao_nas_internal *internal = (ao_nas_internal *) device->internal;
while (num_bytes > 0) {
/* Wait for room in buffer */
while (internal->buf_free == 0) {
AuEvent ev;
AuNextEvent(internal->aud, AuTrue, &ev);
if (ev.type == AuEventTypeElementNotify) {
AuElementNotifyEvent* event = (AuElementNotifyEvent*)(&ev);
if (event->kind == AuElementNotifyKindLowWater)
internal->buf_free = event->num_bytes;
else if ((event->kind == AuElementNotifyKindState) &&
(event->cur_state == AuStatePause) &&
(event->reason != AuReasonUser))
internal->buf_free = event->num_bytes;
}
}
/* Partial transfer */
if (num_bytes > internal->buf_free) {
AuWriteElement(internal->aud, internal->flow, 0, internal->buf_free,
(AuPointer)output_samples, AuFalse, 0);
num_bytes -= internal->buf_free;
output_samples += internal->buf_free;
internal->buf_free = 0;
}
/* Final transfer */
else {
AuWriteElement(internal->aud, internal->flow, 0, num_bytes,
(AuPointer)output_samples, AuFalse, 0);
internal->buf_free -= num_bytes;
break;
}
}
return 1;
}
/* Process audio events from the NAS server. The same routine is used
whether we are recording or playing back */
static void handleAudioEvents(int fd, void *data, int flags)
{
if(!server) {
DPRINTF( "handleAudioEvents called while unconnected!\n");
return;
}
/* read events once */
AuEventsQueued(server, AuEventsQueuedAfterReading);
/* then loop through the read queue */
while(AuEventsQueued(server, AuEventsQueuedAlready)) {
AuEvent event;
AuNextEvent(server, AuTrue, &event);
DPRINTF("event of type %d\n", event.type);
switch(event.type) {
case 0:
{
AuErrorEvent *errEvent = (AuErrorEvent *) &event;
char errdesc[1000];
AuGetErrorText(server, errEvent->error_code, errdesc, sizeof(errdesc));
fprintf(stderr, "audio error: %s\n", errdesc);
sound_Stop();
return; /* return, not break, so that we don't
process the now-closed server any longer! */
}
case AuEventTypeElementNotify:
{
AuElementNotifyEvent *enEvent = (AuElementNotifyEvent *)&event;
switch(enEvent->kind) {
case AuElementNotifyKindLowWater:
DPRINTF("low water event\n");
bytesAvail += enEvent->num_bytes;
break;
case AuElementNotifyKindHighWater:
DPRINTF("high water event\n");
bytesAvail += enEvent->num_bytes;
break;
case AuElementNotifyKindState:
DPRINTF("state change (%d->%d)\n",
enEvent->prev_state,
enEvent->cur_state);
bytesAvail += enEvent->num_bytes;
if(enEvent->cur_state == AuStatePause) {
/* if the flow has stopped, then arrange for it to get started again */
/* XXX there is probably a more intelligent place to do
this, in case there is a real reason it has paused */
DPRINTF("unpausing\n");
AuStartFlow(server, flow, NULL);
AuFlush(server);
}
break;
}
}
}
}
if(bytesAvail > 0) {
DPRINTF("bytesAvail: %d\n", bytesAvail);
signalSemaphoreWithIndex(semaIndex);
}
aioHandle(fd, handleAudioEvents, flags & AIO_RW);
}
