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win32 stuff, SIMPLE_WRITE_SOUND

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@341 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-01-29 23:04:26 +00:00
parent 7c9e6899a2
commit 03a265e5eb
14 changed files with 161 additions and 57 deletions
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7
platform/win32/GenaDrive/DSound.cpp
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@ -45,7 +45,7 @@ int DSoundInit()
wfx.nAvgBytesPerSec=wfx.nBlockAlign*wfx.nSamplesPerSec;
// Make buffer for the next seg to put into the loop:
DSoundNext=(short *)malloc(PsndLen<<2); if (DSoundNext==NULL) return 1;
DSoundNext=(short *)malloc((PsndLen<<2)+64); if (DSoundNext==NULL) return 1;
memset(DSoundNext,0,PsndLen<<2);
// Create the DirectSound interface:
@ -89,7 +89,10 @@ static int WriteSeg()
// Lock the segment at 'LoopWrite' and copy the next segment in
LoopBuffer->Lock(LoopWrite<<((PicoOpt&8) ? 2 : 1),PsndLen<<((PicoOpt&8) ? 2 : 1), &mema,&sizea, &memb,&sizeb, 0);
//dprintf2("lock %p, cpy %x\n", mema, sizea);
if (mema) memcpy(mema,DSoundNext,sizea);
// if (memb) memcpy(memb,DSoundNext+sizea,sizeb);
LoopBuffer->Unlock(mema,sizea, memb,0);
@ -106,6 +109,8 @@ int DSoundUpdate()
LoopBuffer->GetCurrentPosition(&play,NULL);
pos=play>>((PicoOpt&8) ? 2 : 1);
//dprintf2("loop %i pos %i\n", LoopWrite, pos);
// 'LoopWrite' is the next seg in the loop that we want to write
// First check that the sound 'play' pointer has moved out of it:
if (pos>=LoopWrite && pos<LoopWrite+PsndLen) return 1; // No, it hasn't