void FCEUD_Update(uint8 *XBuf, int32 *Buffer, int Count)
{
static int skipcount = 0;
int maxskip = maxconbskip;
if(NoWaiting & 1)
maxskip = ffbskip;
if(Count)
{
int32 can=GetWriteSound();
static int uflow=0;
int32 tmpcan;
extern int FCEUDnetplay;
if(can >= GetMaxSound()) uflow=1; /* Go into massive underflow mode. */
if(can > Count) can=Count;
else uflow=0;
FCEUD_WriteSoundData(Buffer,can);
tmpcan = GetWriteSound();
if(((tmpcan < Count*0.90) && !uflow) || (skipcount >= maxskip))
{
if(XBuf && (!NoWaiting || skipcount >= maxskip))
{
skipcount = 0;
FCEUD_BlitScreen(XBuf);
}
else
{
skipcount++;
//FCEU_printf("Skipped0");
}
Buffer+=can;
Count-=can;
if(Count)
{
if(NoWaiting)
{
can=GetWriteSound();
if(Count>can) Count=can;
}
FCEUD_WriteSoundData(Buffer,Count);
}
}
else
{
skipcount++;
//FCEU_printf("Skipped");
#ifdef NETWORK
if(!NoWaiting && FCEUDnetplay && (uflow || tmpcan >= (Count * 0.90)))
{
if(Count > tmpcan) Count=tmpcan;
while(tmpcan > 0)
{
//printf("Overwrite: %d\n", (Count <= tmpcan)?Count : tmpcan);
FCEUD_WriteSoundData(Buffer, (Count <= tmpcan)?Count : tmpcan);
tmpcan -= Count;
}
}
#endif
}
}
else
{
/* This complex statement deserves some explanation.
Make sure this special speed throttling hasn't been disabled by the user
first. Second, we don't want to throttle the speed if the fast-forward
button is pressed down(or during certain network play conditions).
Now, if we're at this point, we'll throttle speed if sound is disabled.
Otherwise, it gets a bit more complicated. We'll throttle speed if focus
to FCE Ultra has been lost and we're writing to the primary sound buffer
because our sound code won't block. Blocking does seem to work when
writing to a secondary buffer, so we won't throttle when a secondary
buffer is used.
*/
int skipthis = 0;
if(!(eoptions&EO_NOTHROTTLE))
if(!NoWaiting)
if(!soundo || (soundo && nofocus && !(soundoptions&SO_SECONDARY)) )
skipthis = SpeedThrottle();
if(XBuf)
{
if((!skipthis && !NoWaiting) || (skipcount >= maxskip))
{
FCEUD_BlitScreen(XBuf);
skipcount = 0;
}
else
{
skipcount++;
}
}
}
UpdateFCEUWindow();
FCEUD_UpdateInput();
PPUViewDoBlit();
}
/**
* Update the video, audio, and input subsystems with the provided
* video (XBuf) and audio (Buffer) information.
*/
void
FCEUD_Update(uint8 *XBuf,
int32 *Buffer,
int Count)
{
extern int FCEUDnetplay;
#ifdef CREATE_AVI
if(LoggingEnabled == 2 || (eoptions&EO_NOTHROTTLE))
{
if(LoggingEnabled == 2)
{
int16* MonoBuf = new int16[Count];
int n;
for(n=0; n<Count; ++n)
MonoBuf[n] = Buffer[n] & 0xFFFF;
NESVideoLoggingAudio
(
MonoBuf,
FSettings.SndRate, 16, 1,
Count
);
delete [] MonoBuf;
}
Count /= 2;
if(inited & 1)
{
if(Count > GetWriteSound()) Count = GetWriteSound();
if (!mutecapture)
if(Count > 0 && Buffer) WriteSound(Buffer,Count);
}
if(inited & 2)
FCEUD_UpdateInput();
if(XBuf && (inited & 4)) BlitScreen(XBuf);
//SpeedThrottle();
return;
}
#endif
int ocount = Count;
// apply frame scaling to Count
Count = (int)(Count / g_fpsScale);
if(Count) {
int32 can=GetWriteSound();
static int uflow=0;
int32 tmpcan;
// don't underflow when scaling fps
if(can >= GetMaxSound() && g_fpsScale==1.0) uflow=1; /* Go into massive underflow mode. */
if(can > Count) can=Count;
else uflow=0;
#ifdef CREATE_AVI
if (!mutecapture)
#endif
WriteSound(Buffer,can);
//if(uflow) puts("Underflow");
tmpcan = GetWriteSound();
// don't underflow when scaling fps
if(g_fpsScale>1.0 || ((tmpcan < Count*0.90) && !uflow)) {
if(XBuf && (inited&4) && !(NoWaiting & 2))
BlitScreen(XBuf);
Buffer+=can;
Count-=can;
if(Count) {
if(NoWaiting) {
can=GetWriteSound();
if(Count>can) Count=can;
#ifdef CREATE_AVI
if (!mutecapture)
#endif
WriteSound(Buffer,Count);
} else {
while(Count>0) {
#ifdef CREATE_AVI
if (!mutecapture)
#endif
WriteSound(Buffer,(Count<ocount) ? Count : ocount);
Count -= ocount;
}
}
}
} //else puts("Skipped");
else if(!NoWaiting && FCEUDnetplay && (uflow || tmpcan >= (Count * 1.8))) {
if(Count > tmpcan) Count=tmpcan;
while(tmpcan > 0) {
// printf("Overwrite: %d\n", (Count <= tmpcan)?Count : tmpcan);
#ifdef CREATE_AVI
if (!mutecapture)
#endif
WriteSound(Buffer, (Count <= tmpcan)?Count : tmpcan);
tmpcan -= Count;
}
}
} else {
if(!NoWaiting && (!(eoptions&EO_NOTHROTTLE) || FCEUI_EmulationPaused()))
while (SpeedThrottle())
{
FCEUD_UpdateInput();
}
if(XBuf && (inited&4)) {
BlitScreen(XBuf);
}
}
FCEUD_UpdateInput();
//if(!Count && !NoWaiting && !(eoptions&EO_NOTHROTTLE))
// SpeedThrottle();
//if(XBuf && (inited&4))
//{
// BlitScreen(XBuf);
//}
//if(Count)
// WriteSound(Buffer,Count,NoWaiting);
//FCEUD_UpdateInput();
}
