static void streamwrite(DWORD pos) {
const SINT32 *pcm;
HRESULT hr;
LPBYTE blockptr1;
LPBYTE blockptr2;
DWORD blocksize1;
DWORD blocksize2;
pcm = sound_pcmlock();
if ((hr = pDSData3->Lock(pos, dsstreambytes,
(LPVOID *)&blockptr1, &blocksize1,
(LPVOID *)&blockptr2, &blocksize2, 0))
== DSERR_BUFFERLOST) {
pDSData3->Restore();
hr = pDSData3->Lock(pos, dsstreambytes,
(LPVOID *)&blockptr1, &blocksize1,
(LPVOID *)&blockptr2, &blocksize2, 0);
}
if (SUCCEEDED(hr)) {
if (pcm) {
(*fnmix)((SINT16 *)blockptr1, pcm, blocksize1);
}
else {
ZeroMemory(blockptr1, blocksize1);
}
pDSData3->Unlock(blockptr1, blocksize1, blockptr2, blocksize2);
}
sound_pcmunlock(pcm);
}
void soundmng_sync(void) {
QSOUND qs;
const SINT32 *src;
qs = &QSound;
if ((QSound_Playing) && (qs->indata == NULL)) {
src = sound_pcmlock();
if (src) {
satuation_s16(qs->extendbuffer, src, qs->buffersize);
sound_pcmunlock(src);
qs->indata = qs->extendbuffer;
}
}
}
static void sound_play_cb(void *userdata, BYTE *stream, int len) {
int length;
SINT16 *dst;
const SINT32 *src;
length = min(len, (int)(soundmng.samples * 2 * sizeof(SINT16)));
dst = soundmng.buf[soundmng.nsndbuf];
src = sound_pcmlock();
if (src) {
satuation_s16(dst, src, length);
sound_pcmunlock(src);
}
else {
ZeroMemory(dst, length);
}
SDL_MixAudio(stream, (BYTE *)dst, length, SDL_MIX_MAXVOLUME);
soundmng.nsndbuf = (soundmng.nsndbuf + 1) % NSNDBUF;
(void)userdata;
}
static pascal void QSoundCallback(SndChannelPtr inCh, SndCommand *inCmd) {
QSOUND qs;
int nextbuf;
void *dst;
#if defined(SOUND_CRITICAL)
const SINT32 *src;
#endif
if (QS_Avail) {
qs = &QSound;
nextbuf = inCmd->param1;
dst = qs->buf[nextbuf]->sampleArea;
#if !defined(SOUND_CRITICAL)
if (qs->indata) {
CopyMemory((SINT16 *)dst, qs->indata, qs->buffersize);
qs->indata = NULL;
}
#else
src = NULL;
if (QSound_Playing) {
src = sound_pcmlock();
}
if (src) {
satuation_s16((SINT16 *)dst, src, qs->buffersize);
sound_pcmunlock(src);
}
#endif
else {
ZeroMemory(dst, qs->buffersize);
}
SndDoCommand(qs->hdl, &qs->cmd[nextbuf], TRUE);
SndDoCommand(qs->hdl, &qs->cbcmd[nextbuf], TRUE);
}
(void)inCh;
}
