FX_BOOL CPDF_StitchFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* outputs) const {
FX_FLOAT input = inputs[0];
size_t i;
for (i = 0; i < m_pSubFunctions.size() - 1; i++) {
if (input < m_pBounds[i + 1])
break;
}
input = PDF_Interpolate(input, m_pBounds[i], m_pBounds[i + 1],
m_pEncode[i * 2], m_pEncode[i * 2 + 1]);
int nresults;
m_pSubFunctions[i]->Call(&input, kRequiredNumInputs, outputs, nresults);
return TRUE;
}
FX_BOOL CPDF_StitchFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* outputs) const
{
FX_FLOAT input = inputs[0];
int i;
for (i = 0; i < m_nSubs - 1; i ++)
if (input < m_pBounds[i + 1]) {
break;
}
if (m_pSubFunctions[i] == NULL) {
return FALSE;
}
input = PDF_Interpolate(input, m_pBounds[i], m_pBounds[i + 1], m_pEncode[i * 2], m_pEncode[i * 2 + 1]);
int nresults;
m_pSubFunctions[i]->Call(&input, m_nInputs, outputs, nresults);
return TRUE;
}
FX_BOOL CPDF_SampledFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const {
int pos = 0;
CFX_FixedBufGrow<FX_FLOAT, 16> encoded_input_buf(m_nInputs);
FX_FLOAT* encoded_input = encoded_input_buf;
CFX_FixedBufGrow<uint32_t, 32> int_buf(m_nInputs * 2);
uint32_t* index = int_buf;
uint32_t* blocksize = index + m_nInputs;
for (uint32_t i = 0; i < m_nInputs; i++) {
if (i == 0)
blocksize[i] = 1;
else
blocksize[i] = blocksize[i - 1] * m_EncodeInfo[i - 1].sizes;
encoded_input[i] =
PDF_Interpolate(inputs[i], m_pDomains[i * 2], m_pDomains[i * 2 + 1],
m_EncodeInfo[i].encode_min, m_EncodeInfo[i].encode_max);
index[i] = std::min((uint32_t)std::max(0.f, encoded_input[i]),
m_EncodeInfo[i].sizes - 1);
pos += index[i] * blocksize[i];
}
FX_SAFE_INT32 bits_to_output = m_nOutputs;
bits_to_output *= m_nBitsPerSample;
if (!bits_to_output.IsValid())
return FALSE;
FX_SAFE_INT32 bitpos = pos;
bitpos *= bits_to_output.ValueOrDie();
if (!bitpos.IsValid())
return FALSE;
FX_SAFE_INT32 range_check = bitpos;
range_check += bits_to_output.ValueOrDie();
if (!range_check.IsValid())
return FALSE;
const uint8_t* pSampleData = m_pSampleStream->GetData();
if (!pSampleData)
return FALSE;
for (uint32_t j = 0; j < m_nOutputs; j++) {
uint32_t sample =
GetBits32(pSampleData, bitpos.ValueOrDie() + j * m_nBitsPerSample,
m_nBitsPerSample);
FX_FLOAT encoded = (FX_FLOAT)sample;
for (uint32_t i = 0; i < m_nInputs; i++) {
if (index[i] == m_EncodeInfo[i].sizes - 1) {
if (index[i] == 0)
encoded = encoded_input[i] * (FX_FLOAT)sample;
} else {
FX_SAFE_INT32 bitpos2 = blocksize[i];
bitpos2 += pos;
bitpos2 *= m_nOutputs;
bitpos2 += j;
bitpos2 *= m_nBitsPerSample;
if (!bitpos2.IsValid())
return FALSE;
uint32_t sample1 =
GetBits32(pSampleData, bitpos2.ValueOrDie(), m_nBitsPerSample);
encoded += (encoded_input[i] - index[i]) *
((FX_FLOAT)sample1 - (FX_FLOAT)sample);
}
}
results[j] =
PDF_Interpolate(encoded, 0, (FX_FLOAT)m_SampleMax,
m_DecodeInfo[j].decode_min, m_DecodeInfo[j].decode_max);
}
return TRUE;
}
FX_BOOL CPDF_SampledFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const
{
int pos = 0;
CFX_FixedBufGrow<FX_FLOAT, 16> encoded_input_buf(m_nInputs);
FX_FLOAT* encoded_input = encoded_input_buf;
CFX_FixedBufGrow<int, 32> int_buf(m_nInputs * 2);
int* index = int_buf;
int* blocksize = index + m_nInputs;
for (int i = 0; i < m_nInputs; i ++) {
if (i == 0) {
blocksize[i] = 1;
} else {
blocksize[i] = blocksize[i - 1] * m_pEncodeInfo[i - 1].sizes;
}
encoded_input[i] = PDF_Interpolate(inputs[i], m_pDomains[i * 2], m_pDomains[i * 2 + 1],
m_pEncodeInfo[i].encode_min, m_pEncodeInfo[i].encode_max);
index[i] = (int)encoded_input[i];
if (index[i] < 0) {
index[i] = 0;
} else if (index[i] > m_pEncodeInfo[i].sizes - 1) {
index[i] = m_pEncodeInfo[i].sizes - 1;
}
pos += index[i] * blocksize[i];
}
FX_SAFE_INT32 bitpos = pos;
bitpos *= m_nBitsPerSample;
bitpos *= m_nOutputs;
if (!bitpos.IsValid()) {
return FALSE;
}
FX_LPCBYTE pSampleData = m_pSampleStream->GetData();
if (pSampleData == NULL) {
return FALSE;
}
FX_SAFE_INT32 bitpos1 = m_nOutputs - 1 > 0 ? m_nOutputs - 1 : 0;
bitpos1 *= m_nBitsPerSample;
bitpos1 += bitpos.ValueOrDie();
if (!bitpos1.IsValid()) {
return FALSE;
}
for (int j = 0; j < m_nOutputs; j ++) {
FX_DWORD sample = _GetBits32(pSampleData, bitpos.ValueOrDie() + j * m_nBitsPerSample, m_nBitsPerSample);
FX_FLOAT encoded = (FX_FLOAT)sample;
for (int i = 0; i < m_nInputs; i ++) {
if (index[i] == m_pEncodeInfo[i].sizes - 1) {
if (index[i] == 0) {
encoded = encoded_input[i] * (FX_FLOAT)sample;
}
} else {
FX_SAFE_INT32 bitpos2 = blocksize[i];
bitpos2 += 1;
bitpos2 *= m_nBitsPerSample;
bitpos2 *= m_nOutputs;
bitpos2 += bitpos.ValueOrDie();
if (!bitpos2.IsValid()) {
return FALSE;
}
FX_DWORD sample1 = _GetBits32(pSampleData, bitpos2.ValueOrDie(), m_nBitsPerSample);
encoded += (encoded_input[i] - index[i]) * ((FX_FLOAT)sample1 - (FX_FLOAT)sample);
}
}
results[j] = PDF_Interpolate(encoded, 0, (FX_FLOAT)m_SampleMax,
m_pDecodeInfo[j].decode_min, m_pDecodeInfo[j].decode_max);
}
return TRUE;
}
