void UpdateFifoFlag()
{
if (gUcode == UNDEFINED_UCODE)
return;
if (gUcode == 1)
{
*AudioInfo.AI_STATUS_REG |= AI_STATUS_FIFO_FULL;
if (remainingBytes <= MAXBUFFER-LOCK_SIZE) {
*AudioInfo.AI_STATUS_REG &= ~AI_STATUS_FIFO_FULL;
*AudioInfo.MI_INTR_REG |= MI_INTR_AI;
AudioInfo.CheckInterrupts();
}
}
else
{
if (*AudioInfo.AI_LEN_REG <= MAXBUFFER-LOCK_SIZE) {
*AudioInfo.AI_STATUS_REG &= ~AI_STATUS_FIFO_FULL;
*AudioInfo.MI_INTR_REG |= MI_INTR_AI;
AudioInfo.CheckInterrupts();
}
else
*AudioInfo.AI_STATUS_REG |= AI_STATUS_FIFO_FULL;
}
}
EXPORT void CALL AiLenChanged (void) {
int count, offset=0, temp;
DWORD dwStatus;
if (!lpdsbuf) {
*AudioInfo.AI_STATUS_REG &= ~AI_STATUS_FIFO_FULL;
*AudioInfo.MI_INTR_REG |= MI_INTR_AI;
AudioInfo.CheckInterrupts();
return;}
else if (gUcode == UNDEFINED_UCODE)
{
gUcode = 88;
ucodeDetected = TRUE;
}
// if (gUcode == UNDEFINED_UCODE) {DetectMicrocode(); }
if ((gUcode != 4) /*&& (gUcode != UNDEFINED_UCODE)*/)//Hack for MusyX
*AudioInfo.AI_STATUS_REG |= AI_STATUS_FIFO_FULL;
//if (*AudioInfo.AI_LEN_REG == 0) { return; } //this breaks sound in Zelda load states!!
Snd1Len = (*AudioInfo.AI_LEN_REG & 0x3FFF8);
temp = Snd1Len;
Snd1ReadPos = AudioInfo.RDRAM + (*AudioInfo.AI_DRAM_ADDR_REG & 0x00FFFFF8);
if (Playing) {
for (count = 0; count < 3; count ++) {
if (SndBuffer[count] == Buffer_Playing) {
offset = (count + 1) & 3;
}
}
} else {
offset = 0;
}
for (count = 0; count < 3; count ++) {
if (SndBuffer[(count + offset) & 3] == Buffer_HalfFull) {
FillBuffer((count + offset) & 3);
count = 3;
}
}
for (count = 0; count < 3; count ++) {
if (SndBuffer[(count + offset) & 3] == Buffer_Full) {
FillBuffer((count + offset + 1) & 3);
FillBuffer((count + offset + 2) & 3);
count = 20;
}
}
if (count < 10) {
FillBuffer((0 + offset) & 3);
FillBuffer((1 + offset) & 3);
FillBuffer((2 + offset) & 3);
}
}
EXPORT void CALL Update (BOOL Wait) {
DWORD dwEvt;
if (!lpdsbuf) {
*AudioInfo.AI_STATUS_REG &= ~AI_STATUS_FIFO_FULL;
*AudioInfo.MI_INTR_REG |= MI_INTR_AI;
AudioInfo.CheckInterrupts();
return;
}
else if (gUcode == UNDEFINED_UCODE)
{
gUcode = 88;
ucodeDetected = TRUE;
}
if (Wait) {
dwEvt = MsgWaitForMultipleObjects(NUMCAPTUREEVENTS,rghEvent,FALSE,
INFINITE,QS_ALLINPUT);
} else {
dwEvt = MsgWaitForMultipleObjects(NUMCAPTUREEVENTS,rghEvent,FALSE,
0,QS_ALLINPUT);
}
dwEvt -= WAIT_OBJECT_0;
if (dwEvt == NUMCAPTUREEVENTS) {
return;
}
switch (dwEvt) {
case 0:
SndBuffer[0] = Buffer_Empty;
FillSectionWithSilence(0);
SndBuffer[1] = Buffer_Playing;
FillBuffer(2);
FillBuffer(0);
break;
case 1:
SndBuffer[1] = Buffer_Empty;
FillSectionWithSilence(1);
SndBuffer[2] = Buffer_Playing;
FillBuffer(0);
FillBuffer(1);
break;
case 2:
SndBuffer[2] = Buffer_Empty;
FillSectionWithSilence(2);
SndBuffer[0] = Buffer_Playing;
FillBuffer(1);
FillBuffer(2);
break;
}
}
void FillBuffer ( int buffer ) {
//void AddToBuffer (void *sndptr, DWORD sndlen);
DWORD dwBytesLocked;
VOID *lpvData;
if (!audioIsPlaying)
StartAudio();
if (gUcode != 4)
if (Snd1Len == 0) {
*AudioInfo.AI_STATUS_REG &= ~AI_STATUS_FIFO_FULL;
*AudioInfo.MI_INTR_REG |= MI_INTR_AI;
AudioInfo.CheckInterrupts();
return; }
if (SndBuffer[buffer] == Buffer_Empty) {
if (Snd1Len >= BufferSize) {
if (FAILED( IDirectSoundBuffer8_Lock(lpdsbuf, BufferSize * buffer,BufferSize, &lpvData, &dwBytesLocked,
NULL, NULL, 0 ) ) )
{
IDirectSoundBuffer8_Unlock(lpdsbuf, lpvData, dwBytesLocked, NULL, 0 );
//DisplayError("FAILED lock");
return;
}
Soundmemcpy(lpvData,Snd1ReadPos,dwBytesLocked);
//AddToBuffer (lpvData, dwBytesLocked);
SndBuffer[buffer] = Buffer_Full;
Snd1ReadPos += dwBytesLocked;
Snd1Len -= dwBytesLocked;
IDirectSoundBuffer8_Unlock(lpdsbuf, lpvData, dwBytesLocked, NULL, 0 );
} else {
if (FAILED( IDirectSoundBuffer8_Lock(lpdsbuf, BufferSize * buffer,Snd1Len, &lpvData, &dwBytesLocked,
NULL, NULL, 0 ) ) )
{
IDirectSoundBuffer8_Unlock(lpdsbuf, lpvData, dwBytesLocked, NULL, 0 );
//DisplayError("FAILED lock");
return;
}
Soundmemcpy(lpvData,Snd1ReadPos,dwBytesLocked);
//AddToBuffer (lpvData, dwBytesLocked);
SndBuffer[buffer] = Buffer_HalfFull;
Snd1ReadPos += dwBytesLocked;
SpaceLeft = BufferSize - Snd1Len;
Snd1Len = 0;
IDirectSoundBuffer8_Unlock(lpdsbuf, lpvData, dwBytesLocked, NULL, 0 );
}
} else if (SndBuffer[buffer] == Buffer_HalfFull) {
if (Snd1Len >= SpaceLeft) {
if (FAILED( IDirectSoundBuffer8_Lock(lpdsbuf, (BufferSize * (buffer + 1)) - SpaceLeft ,SpaceLeft, &lpvData,
&dwBytesLocked, NULL, NULL, 0 ) ) )
{
IDirectSoundBuffer8_Unlock(lpdsbuf, lpvData, dwBytesLocked, NULL, 0 );
//DisplayError("FAILED lock");
return;
}
Soundmemcpy(lpvData,Snd1ReadPos,dwBytesLocked);
//AddToBuffer (lpvData, dwBytesLocked);
SndBuffer[buffer] = Buffer_Full;
Snd1ReadPos += dwBytesLocked;
Snd1Len -= dwBytesLocked;
IDirectSoundBuffer8_Unlock(lpdsbuf, lpvData, dwBytesLocked, NULL, 0 );
} else {
if (FAILED( IDirectSoundBuffer8_Lock(lpdsbuf, (BufferSize * (buffer + 1)) - SpaceLeft,Snd1Len, &lpvData, &dwBytesLocked,
NULL, NULL, 0 ) ) )
{
IDirectSoundBuffer8_Unlock(lpdsbuf, lpvData, dwBytesLocked, NULL, 0 );
//DisplayError("FAILED lock");
return;
}
Soundmemcpy(lpvData,Snd1ReadPos,dwBytesLocked);
//AddToBuffer (lpvData, dwBytesLocked);
SndBuffer[buffer] = Buffer_HalfFull;
Snd1ReadPos += dwBytesLocked;
SpaceLeft = SpaceLeft - Snd1Len;
Snd1Len = 0;
IDirectSoundBuffer8_Unlock(lpdsbuf, lpvData, dwBytesLocked, NULL, 0 );
}
}
if (gUcode != 4)
if ((Snd1Len == 0) /*&& (gUcode != UNDEFINED_UCODE)*/) {
*AudioInfo.AI_STATUS_REG &= ~AI_STATUS_FIFO_FULL;
*AudioInfo.MI_INTR_REG |= MI_INTR_AI;
AudioInfo.CheckInterrupts();
}
}