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Initial SampleEditor

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This commit is contained in:
Jack Andersen
2018-07-29 20:20:03 -10:00
parent 16745c9bf8
commit 8d24e19989
21 changed files with 469 additions and 144 deletions
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29
lib/DSPCodec.cpp
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@@ -151,3 +151,32 @@ unsigned DSPDecompressFrameStateOnly(const uint8_t* in,
}
return ret;
}
unsigned DSPDecompressFrameRangedStateOnly(const uint8_t* in,
const int16_t coefs[8][2], int16_t* prev1, int16_t* prev2,
unsigned firstSample, unsigned lastSample)
{
uint8_t cIdx = (in[0]>>4) & 0xf;
int32_t factor1 = coefs[cIdx][0];
int32_t factor2 = coefs[cIdx][1];
uint8_t exp = in[0] & 0xf;
unsigned ret = 0;
for (unsigned s=firstSample ; s<14 && s<lastSample ; ++s)
{
int32_t sampleData = (s&1)?
NibbleToInt[(in[s/2+1])&0xf]:
NibbleToInt[(in[s/2+1]>>4)&0xf];
sampleData <<= exp;
sampleData <<= 11;
sampleData += 1024;
sampleData +=
factor1 * ((int32_t)(*prev1)) +
factor2 * ((int32_t)(*prev2));
sampleData >>= 11;
sampleData = DSPSampClamp(sampleData);
*prev2 = *prev1;
*prev1 = sampleData;
++ret;
}
return ret;
}