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#include "synprivate.h"
#include <revolution/types.h>
// #include <revolution/ax.h>
static f32 __HBMSYNCentsTable[100] =
{
1.0f, 1.000578f, 1.001156f, 1.001734f,
1.002313f, 1.002892f, 1.003472f, 1.004052f,
1.004632f, 1.005212f, 1.005793f, 1.006374f,
1.006956f, 1.007537f, 1.00812f, 1.008702f,
1.009285f, 1.009868f, 1.010451f, 1.011035f,
1.011619f, 1.012204f, 1.012789f, 1.013374f,
1.013959f, 1.014545f, 1.015132f, 1.015718f,
1.016305f, 1.016892f, 1.01748f, 1.018068f,
1.018656f, 1.019244f, 1.019833f, 1.020423f,
1.021012f, 1.021602f, 1.022192f, 1.022783f,
1.023374f, 1.023965f, 1.024557f, 1.025149f,
1.025741f, 1.026334f, 1.026927f, 1.02752f,
1.028114f, 1.028708f, 1.029302f, 1.029897f,
1.030492f, 1.031087f, 1.031683f, 1.032279f,
1.032876f, 1.033472f, 1.03407f, 1.034667f,
1.035265f, 1.035863f, 1.036462f, 1.03706f,
1.03766f, 1.038259f, 1.038859f, 1.039459f,
1.04006f, 1.040661f, 1.041262f, 1.041864f,
1.042466f, 1.043068f, 1.043671f, 1.044274f,
1.044877f, 1.045481f, 1.046085f, 1.046689f,
1.047294f, 1.047899f, 1.048505f, 1.049111f,
1.049717f, 1.050323f, 1.05093f, 1.051537f,
1.052145f, 1.052753f, 1.053361f, 1.05397f,
1.054579f, 1.055188f, 1.055798f, 1.056408f,
1.057018f, 1.057629f, 1.05824f, 1.058851f
};
static f32 __HBMSYNOctavesTableUp[12] =
{
1.0f,
2.0f,
4.0f,
8.0f,
16.0f,
32.0f,
64.0f,
128.0f,
256.0f,
512.0f,
1024.0f,
2048.0f
};
static f32 __HBMSYNSemitonesTableUp[12] =
{
1.0f,
1.059463f,
1.122462f,
1.189207f,
1.259921f,
1.33484f,
1.414214f,
1.498307f,
1.587401f,
1.681793f,
1.781797f,
1.887749f
};
static f32 __HBMSYNSemitonesTableDown[128] =
{
1.0f, 0.943874f, 0.890899f, 0.840896f,
0.793701f, 0.749154f, 0.707107f, 0.66742f,
0.629961f, 0.594604f, 0.561231f, 0.529732f,
0.5f, 0.471937f, 0.445449f, 0.420448f,
0.39685f, 0.374577f, 0.353553f, 0.33371f,
0.31498f, 0.297302f, 0.280616f, 0.264866f,
0.25f, 0.235969f, 0.222725f, 0.210224f,
0.198425f, 0.187288f, 0.176777f, 0.166855f,
0.15749f, 0.148651f, 0.140308f, 0.132433f,
0.125f, 0.117984f, 0.111362f, 0.105112f,
0.099213f, 0.093644f, 0.088388f, 0.083427f,
0.078745f, 0.074325f, 0.070154f, 0.066216f,
0.0625f, 0.058992f, 0.055681f, 0.052556f,
0.049606f, 0.046822f, 0.044194f, 0.041714f,
0.039373f, 0.037163f, 0.035077f, 0.033108f,
0.03125f, 0.029496f, 0.027841f, 0.026278f,
0.024803f, 0.023411f, 0.022097f, 0.020857f,
0.019686f, 0.018581f, 0.017538f, 0.016554f,
0.015625f, 0.014748f, 0.01392f, 0.013139f,
0.012402f, 0.011706f, 0.011049f, 0.010428f,
0.009843f, 0.009291f, 0.008769f, 0.008277f,
0.007813f, 0.007374f, 0.00696f, 0.00657f,
0.006201f, 0.005853f, 0.005524f, 0.005214f,
0.004922f, 0.004645f, 0.004385f, 0.004139f,
0.003906f, 0.003687f, 0.00348f, 0.003285f,
0.0031f, 0.002926f, 0.002762f, 0.002607f,
0.002461f, 0.002323f, 0.002192f, 0.002069f,
0.001953f, 0.001844f, 0.00174f, 0.001642f,
0.00155f, 0.001463f, 0.001381f, 0.001304f,
0.00123f, 0.001161f, 0.001096f, 0.001035f,
9.77e-4f, 9.22e-4f, 8.7e-4f, 8.21e-4f,
7.75e-4f, 7.32e-4f, 6.91e-4f, 6.52e-4f
};
f32 __HBMSYNGetRelativePitch(HBMSYNVOICE *voice)
{
s32 cents = voice->cents;
cents /= 1 << 16;
if (cents > 0)
{
s32 octaves = cents / 1200;
s32 semitones = cents % 1200 / 100;
cents %= 100;
return __HBMSYNOctavesTableUp[octaves]
* __HBMSYNSemitonesTableUp[semitones] * __HBMSYNCentsTable[cents];
}
else if (cents < 0)
{
s32 semitones = cents / 100;
cents %= 100;
if (cents != 0)
{
cents += 100;
semitones -= 1;
}
semitones *= -1; // since semitones is negative
return __HBMSYNSemitonesTableDown[semitones]
* __HBMSYNCentsTable[cents];
}
else
{
return 1.0f;
}
}
void __HBMSYNSetupPitch(HBMSYNVOICE *voice)
{
voice->srcRatio = voice->sample->sampleRate / 3.2e4f;
voice->cents = (voice->keyNum - voice->region->unityNote) * 100;
voice->cents += voice->region->fineTune;
voice->cents <<= 16;
}
void __HBMSYNSetupSrc(HBMSYNVOICE *voice)
{
f32 srcRatio = voice->srcRatio * __HBMSYNGetRelativePitch(voice);
u32 value = srcRatio * 65536.0f;
u16 *p;
voice->axvpb->pb.srcSelect = 1;
// cool
p = (u16 *)&voice->axvpb->pb.src;
/* src.ratioHi */ *p++ = value >> 16;
/* src.ratioLo */ *p++ = value;
/* src.currentAdddressFrac */ *p++ = 0;
/* src.last_samples[0] */ *p++ = 0;
/* src.last_samples[1] */ *p++ = 0;
/* src.last_samples[2] */ *p++ = 0;
/* src.last_samples[3] */ *p = 0;
voice->axvpb->sync &= ~AX_VPB_SYNC_FLAG_SRC_RATIO;
voice->axvpb->sync |= AX_VPB_SYNC_FLAG_SRC_TYPE | AX_VPB_SYNC_FLAG_SRC;
}
void __HBMSYNUpdateSrc(HBMSYNVOICE *voice)
{
u32 ratio = voice->srcRatio * __HBMSYNGetRelativePitch(voice) * 65536.0f;
*(u32 *)&voice->axvpb->pb.src.ratioHi = ratio;
voice->axvpb->sync |= AX_VPB_SYNC_FLAG_SRC_RATIO;
}
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