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debug bgm player, sound code refactoring

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@598 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-10-16 13:32:55 +00:00
parent 40644bfedd
commit 7b3f44c6b6
12 changed files with 161 additions and 86 deletions
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31
pico/sound/sound.c
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@ -297,7 +297,7 @@ PICO_INTERNAL void PsndClear(void)
}
PICO_INTERNAL int PsndRender(int offset, int length)
static int PsndRender(int offset, int length)
{
int buf32_updated = 0;
int *buf32 = PsndBuffer+offset;
@ -361,6 +361,35 @@ PICO_INTERNAL int PsndRender(int offset, int length)
return length;
}
// to be called on 224 or line_sample scanlines only
PICO_INTERNAL void PsndGetSamples(int y)
{
#if SIMPLE_WRITE_SOUND
if (y != 224) return;
PsndRender(0, PsndLen);
if (PicoWriteSound) PicoWriteSound(PsndLen);
PsndClear();
#else
static int curr_pos = 0;
if (y == 224)
{
if (emustatus & 2)
curr_pos += PsndRender(curr_pos, PsndLen-PsndLen/2);
else curr_pos = PsndRender(0, PsndLen);
if (emustatus&1) emustatus|=2; else emustatus&=~2;
if (PicoWriteSound) PicoWriteSound(curr_pos);
// clear sound buffer
PsndClear();
}
else if (emustatus & 3) {
emustatus|= 2;
emustatus&=~1;
curr_pos = PsndRender(0, PsndLen/2);
}
#endif
}
// -----------------------------------------------------------------
// z80 stuff