void esd_audio_close()
{
/*
* I guess this chunk of code is meant to make sure that
* everything that was sent to the output got written
* - let's leave that in for now, but it could cause a
* delay when the user hits stop
* -KDT
*/
if (esd_audio_fd >= 0) {
fd_set write_fds;
FD_ZERO(&write_fds);
FD_SET(esd_audio_fd, &write_fds);
ALsetfillpoint(outaudioport, ESD_BUF_SIZE * 2);
select(esd_audio_fd + 1, NULL, &write_fds, NULL, NULL);
}
if (outaudioport != (ALport) 0) {
ALcloseport(outaudioport);
outaudioport = (ALport) 0;
}
if (inaudioport != (ALport) 0) {
ALcloseport(inaudioport);
inaudioport = (ALport) 0;
}
}
/* Close the audio device */
void
sgi_audio_close(audio_desc_t ad)
{
UNUSED(ad);
ALcloseport(rp);
ALcloseport(wp);
audio_fd = -1;
}
/**
* Stop recording.
*
* @return TRUE on success, FALSE on failure.
*/
boolean
adin_mic_end()
{
/* close audio port */
ALcloseport(aport);
return(TRUE);
}
/*
* Initialize the audio hardware.
*/
int sfxInit(char *audioDir, int numPorts) {
int idx;
char *str;
if (audioDir != NULL) {
str = strdup(audioDir);
if (str)
sfxAudioDir = str;
}
if (numPorts < 1)
return SFX_ERR_NO_PORTS_AVAIL;
if (numPorts > MAX_AUDIO_PORTS)
numPorts = MAX_AUDIO_PORTS;
(void) ALseterrorhandler(sfxSoundErrFunc);
nAudioPorts = sfxOpenAudioPorts(audioPort, numPorts);
if (nAudioPorts == 0)
return SFX_ERR_NO_PORTS_AVAIL;
if (nAudioPorts < 0)
return SFX_ERR_NO_AUDIO_HW;
(void) signal(SIGCHLD, sfxSoundDied);
if (pipe(spigot) < 0 || (soundChild = sproc(sfxSoundHandler, PR_SADDR, audioPort)) < 0) {
for (idx=0; idx < nAudioPorts; idx++)
ALcloseport(audioPort[idx]);
return SFX_ERR_NO_SPROC;
}
return nAudioPorts;
}
SoundCardPMO::~SoundCardPMO()
{
m_bExit = true;
m_pSleepSem->Signal();
m_pPauseSem->Signal();
if (m_pBufferThread)
{
m_pBufferThread->Join();
delete m_pBufferThread;
}
Reset(true);
if (outaudioport != (ALport) 0) {
ALcloseport(outaudioport);
outaudioport = (ALport)0;
}
if (myInfo)
{
delete myInfo;
myInfo = NULL;
}
}
Error SoundCardPMO::Reset(bool user_stop)
{
int a;
if (audio_fd <= 0)
return kError_NoErr;
if (user_stop)
{
ALcloseport(outaudioport);
outaudioport = (ALport)0;
Init(NULL);
}
else
{
//PORTING: DSP_SYNC blocks until the soundcard is done playing and
// then returns
if (audio_fd >= 0) {
fd_set write_fds;
FD_ZERO(&write_fds);
FD_SET(audio_fd, &write_fds);
select(audio_fd + 1, NULL, &write_fds, NULL, NULL);
}
}
return kError_NoErr;
}
void Audio_Irix::close ()
{
if (_audio != NULL)
{
ALcloseport(_audio);
ALfreeconfig(_config);
_audio = NULL;
_config = NULL;
outOfOrder ();
}
}
/*
* Clean up sound routines.
*/
void sfxEnd(int waitForSounds) {
int idx;
endingOnPurpose = 1;
if (waitForSounds) { /* wait for sounds to complete */
for (idx=0; idx < nAudioPorts; idx++) {
while (ALgetfilled(audioPort[idx]) > 0)
sginap(1);
ALcloseport(audioPort[idx]);
}
} else if (soundChild > 0) /* kill childs playing sounds */
kill(soundChild, SIGKILL);
if (nAudioPorts > 0) /* reset audio subsystem */
sfxResetAudioHw();
}
void MainLoop(ALport alp, FileDescriptor dacfd, FileDescriptor sockfd, SynthState *v1, SynthState *v2) {
/* int hwm = 300, lwm = 256; */
int hwm = 1000, lwm = 800;
fd_set read_fds, write_fds;
/* largest file descriptor to search for */
int nfds = BIGGER_OF(dacfd, sockfd) + 1;
printf("MainLoop: dacfd %d, sockfd %d, nfds %d\n", dacfd, sockfd, nfds);
time_to_quit = 0;
sigset(SIGINT, catch_sigint); /* set sig handler */
while(!time_to_quit) {
/* compute sine wave samples while the sound output buffer is below
the high water mark */
while (ALgetfilled(alp) < hwm) {
Synthesize(alp, v1, v2);
}
/* Figure out the time tag corresponding to the time in the future that we haven't
computed any samples for yet. */
OSCInvokeAllMessagesThatAreReady(OSCTT_PlusSeconds(OSCTT_CurrentTime(),
ALgetfilled(alp) / the_sample_rate));
/* set the low water mark, i.e. when we want control from select(2) */
ALsetfillpoint(alp, OUTPUTQUEUESIZE - lwm);
/* set up select */
FD_ZERO(&read_fds); /* clear read_fds */
FD_ZERO(&write_fds); /* clear write_fds */
FD_SET(dacfd, &write_fds);
FD_SET(sockfd, &read_fds);
FD_SET(0, &read_fds); /* stdin */
/* give control back to OS scheduler to put us to sleep until the DAC
queue drains and/or a character is available from standard input */
if (select(nfds, &read_fds, &write_fds, (fd_set * )0, (struct timeval *)0) < 0) {
/* select reported an error */
perror("bad select");
goto quit;
}
if(FD_ISSET(sockfd, &read_fds)) {
ReceivePacket(sockfd);
}
/* is there a character in the queue? */
if (FD_ISSET(0, &read_fds)) {
/* this will never block */
char c = getchar();
if (c == 'q') {
/* quit */
break;
} else if ((c <= '9') && (c >= '0')) {
/* tweak frequency */
v1->f = 440.0 + 100.0 * (c - '0');
}
}
}
quit:
ALcloseport(alp);
closeudp(sockfd);
}
void sound_uninit()
{
ALfreeconfig(audioconfig);
ALcloseport(audioport);
}
static void shutdown(struct xmp_context *ctx)
{
xmp_smix_off(ctx);
ALcloseport(audio_port);
}