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Added the Zelda UCode preliminary synthesizer. It's far from perfect, but it sounds like the exact pitch it should synth. I'd be glad if someone finished it.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3630 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
XTra.KrazzY
2009-07-01 18:05:54 +00:00
parent 71556f77f6
commit 7d7e2ec8a8
5 changed files with 319 additions and 242 deletions
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1
Source/Plugins/Plugin_DSP_HLE/Src/SConscript
View File

@ -23,6 +23,7 @@ files = [
'UCodes/UCode_Zelda.cpp',
'UCodes/UCode_Zelda_ADPCM.cpp',
'UCodes/UCode_Zelda_Voice.cpp',
'UCodes/UCode_Zelda_Synth.cpp',
]
dspenv = env.Clone()

72
Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda_Synth.cpp
View File

@ -25,19 +25,75 @@
void CUCode_Zelda::MixAddSynth_Waveform(ZeldaVoicePB &PB, s32* _Buffer, int _Size)
{
int mask = PB.Format ? 3 : 1;
for (int i = 0; i < _Size; i++)
{
s16 sample = (i & mask) ? 0xc000 : 0x4000;
_Buffer[i++] = (s32)sample;
}
float ratioFactor = 32000.0f / (float)soundStream->GetMixer()->GetSampleRate();
u32 _ratio = (((PB.RatioInt * 80) + PB.RatioFrac) << 4) & 0xFFFF0000;
u64 ratio = (u64)(((_ratio / 80) << 16) * ratioFactor);
int mask = PB.Format ? 3 : 1, shift = PB.Format ? 2 : 1;
u32 pos[2] = {0, 0};
int i = 0;
if (PB.KeyOff != 0)
return;
if (PB.NeedsReset)
{
PB.RemLength = PB.Length - PB.RestartPos;
PB.CurAddr = PB.StartAddr + (PB.RestartPos << 1);
PB.ReachedEnd = 0;
}
_lRestart:
if (PB.ReachedEnd)
{
PB.ReachedEnd = 0;
if (PB.RepeatMode == 0)
{
PB.KeyOff = 1;
PB.RemLength = 0;
PB.CurAddr = PB.StartAddr + (PB.RestartPos << 1) + PB.Length;
return;
}
else
{
PB.RestartPos = PB.LoopStartPos;
PB.RemLength = PB.Length - PB.RestartPos;
PB.CurAddr = PB.StartAddr + (PB.RestartPos << 1);
pos[1] = 0; pos[0] = 0;
}
}
for (; i < _Size;)
{
s16 sample = ((pos[1] & mask) == mask) ? 0xc000 : 0x4000;
_Buffer[i++] = (s32)sample;
(*(u64*)&pos) += ratio;
if ((pos[1] + ((PB.CurAddr - PB.StartAddr) >> 1)) >= PB.Length)
{
PB.ReachedEnd = 1;
goto _lRestart;
}
}
if (PB.RemLength < pos[1])
{
PB.RemLength = 0;
PB.ReachedEnd = 1;
}
else
PB.RemLength -= pos[1];
PB.CurAddr += pos[1] << 1;
// There should be a position fraction as well.
}
void CUCode_Zelda::MixAddSynth_Constant(ZeldaVoicePB &PB, s32* _Buffer, int _Size)
{
// TODO: Header, footer and cases this synth actually happens
for (int i = 0; i < _Size; i++)
_Buffer[i++] = (s32)PB.RatioInt;
}

20
Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda_Voice.cpp
View File

@ -281,20 +281,22 @@ void CUCode_Zelda::MixAddVoice(ZeldaVoicePB &PB, s32* _LeftBuffer, s32* _RightBu
{
switch (PB.Format)
{
// Synthesized sounds
case 0x0000:
case 0x0001: // Used for "Denied" sound in Zelda
//MixAddSynth_Waveform(PB, m_TempBuffer, _Size);
break;
case 0x0000: // Example: Magic meter filling up in ZWW
case 0x0001: // Example: "Denied" sound when trying to pull out a sword
// indoors in ZWW
MixAddSynth_Waveform(PB, m_TempBuffer, _Size);
break;
case 0x0006:
//MixAddSynth_Waveform(PB, m_TempBuffer, _Size);
break;
WARN_LOG(DSPHLE, "Synthesizing 0x0006 (constant sound)");
MixAddSynth_Constant(PB, m_TempBuffer, _Size);
break;
// These are more "synth" formats - square wave, saw wave etc.
// These are more "synth" formats - square wave, saw wave etc.
case 0x0002:
return;
WARN_LOG(DSPHLE, "Synthesizing 0x0002");
break;
// AFC formats