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#include "SND_bank.h"
#include "SND_exChannel.h"
#include "SND_main.h"
#include "mmap.h"
static const struct SNDWaveData *GetWaveData(
const struct SNDBankData *bankData, s32 waveArc, s32 wave);
BOOL SND_ReadInstData(
const struct SNDBankData *bankData, s32 program, s32 midiKey, struct SNDInstData *instData)
{
s32 i;
struct SNDDrumSet *drumSet;
struct SNDKeySplit *keySplit;
u32 off;
u8 minKey, maxKey;
if (program < 0)
return FALSE;
SNDi_LockMutex();
if (program >= bankData->instCount)
{
SNDi_UnlockMutex();
return FALSE;
}
off = bankData->instOffsets[program];
instData->type = SND_INST_OFFSET_TYPE(off);
switch (instData->type)
{
case SND_INST_PCM:
case SND_INST_PSG:
case SND_INST_NOISE:
case SND_INST_DIRECTPCM:
case SND_INST_DUMMY:
instData->param = *SND_INST_OFFSET_NORMAL(bankData, off);
break;
case SND_INST_DRUM_TABLE:
drumSet = SND_INST_OFFSET_DRUMS(bankData, off);
// seperate variables needed for matching
maxKey = drumSet->maxKey;
minKey = drumSet->minKey;
if (midiKey < minKey || midiKey > maxKey)
{
SNDi_UnlockMutex();
return FALSE;
}
*instData = drumSet->instruments[midiKey - drumSet->minKey];
break;
case SND_INST_KEY_SPLIT:
i = 0;
keySplit = SND_INST_OFFSET_KEYSPL(bankData, off);
while (midiKey > keySplit->key[i])
{
i++;
if (i >= SND_INST_MAX_KEYSPLIT)
{
SNDi_UnlockMutex();
return FALSE;
}
}
*instData = keySplit->instruments[i];
break;
case SND_INST_ILLEGAL:
default:
SNDi_UnlockMutex();
return FALSE;
}
SNDi_UnlockMutex();
return TRUE;
}
const struct SNDWaveData *SND_GetWaveDataAddress(const struct SNDWaveArc *waveArc, s32 wave)
{
SNDi_LockMutex();
const struct SNDWaveData *retval = (const struct SNDWaveData *)waveArc->waveOffsets[wave];
if (retval != NULL)
{
if ((u32)retval < HW_MAIN_MEM)
{
retval = (const struct SNDWaveData *)((u32)waveArc + (u32)retval);
}
}
else
{
retval = NULL;
}
SNDi_UnlockMutex();
return retval;
}
BOOL SND_NoteOn(struct SNDExChannel *chn,
s32 midiKey,
s32 velocity,
s32 length,
const struct SNDBankData *bankData,
const struct SNDInstData *instData)
{
const struct SNDWaveData *waveData;
u8 release;
BOOL success;
release = instData->param.envRelease;
if (release == 0xFF)
{
length = -1;
release = 0;
}
switch (instData->type)
{
case SND_INST_PCM:
case SND_INST_DIRECTPCM:
if (instData->type == SND_INST_PCM)
{
waveData = GetWaveData(bankData, instData->param.wave[1], instData->param.wave[0]);
}
else
{
waveData = (const struct SNDWaveData *)((instData->param.wave[1] << 16) |
instData->param.wave[0]);
}
if (waveData == NULL)
{
success = FALSE;
}
else
{
success =
SND_StartExChannelPcm(chn, &waveData->param, waveData->sampleData, length);
}
break;
case SND_INST_PSG:
success = SND_StartExChannelPsg(chn, instData->param.wave[0], length);
break;
case SND_INST_NOISE:
success = SND_StartExChannelNoise(chn, length);
break;
default:
success = FALSE;
break;
}
if (success == FALSE)
{
return FALSE;
}
else
{
chn->midiKey = (u8)midiKey;
chn->rootMidiKey = instData->param.rootKey;
chn->velocity = (u8)velocity;
SND_SetExChannelAttack(chn, instData->param.envAttack);
SND_SetExChannelDecay(chn, instData->param.envDecay);
SND_SetExChannelSustain(chn, instData->param.envSustain);
SND_SetExChannelRelease(chn, release);
chn->initPan = (s8)(instData->param.pan - 0x40);
return TRUE;
}
}
static const struct SNDWaveData *GetWaveData(
const struct SNDBankData *bankData, s32 waveArc, s32 wave)
{
const struct SNDWaveArc *arcPtr = bankData->waveArcLinks[waveArc].waveArc;
if (arcPtr == NULL)
{
return NULL;
}
else if (wave < arcPtr->waveCount)
{
return SND_GetWaveDataAddress(arcPtr, wave);
}
else
{
return NULL;
}
}
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