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#include "nuked_opl3_v174.h"
#include "nuked/nukedopl3_174.h"
#include <cstring>
#include <cmath>
#if defined(ADLMIDI_ENABLE_HQ_RESAMPLER)
#include <zita-resampler/vresampler.h>
#endif
NukedOPL3v174::NukedOPL3v174() :
OPLChipBase()
{
m_chip = new opl3_chip;
#if defined(ADLMIDI_ENABLE_HQ_RESAMPLER)
m_resampler = new VResampler;
#endif
reset(m_rate);
}
NukedOPL3v174::~NukedOPL3v174()
{
opl3_chip *chip_r = reinterpret_cast<opl3_chip*>(m_chip);
delete chip_r;
#if defined(ADLMIDI_ENABLE_HQ_RESAMPLER)
delete m_resampler;
#endif
}
void NukedOPL3v174::setRate(uint32_t rate)
{
OPLChipBase::setRate(rate);
opl3_chip *chip_r = reinterpret_cast<opl3_chip*>(m_chip);
std::memset(chip_r, 0, sizeof(opl3_chip));
OPL3v17_Reset(chip_r, rate);
#if defined(ADLMIDI_ENABLE_HQ_RESAMPLER)
m_resampler->setup(rate * (1.0 / 49716), 2, 48);
#endif
}
void NukedOPL3v174::reset()
{
setRate(m_rate);
}
void NukedOPL3v174::reset(uint32_t rate)
{
setRate(rate);
}
void NukedOPL3v174::writeReg(uint16_t addr, uint8_t data)
{
opl3_chip *chip_r = reinterpret_cast<opl3_chip*>(m_chip);
OPL3v17_WriteReg(chip_r, addr, data);
}
int NukedOPL3v174::generate(int16_t *output, size_t frames)
{
#if defined(ADLMIDI_ENABLE_HQ_RESAMPLER)
for(size_t i = 0; i < frames; ++i)
{
generateResampledHq(output);
output += 2;
}
#else
opl3_chip *chip_r = reinterpret_cast<opl3_chip*>(m_chip);
OPL3v17_GenerateStream(chip_r, output, (Bit32u)frames);
#endif
return (int)frames;
}
int NukedOPL3v174::generateAndMix(int16_t *output, size_t frames)
{
#if defined(ADLMIDI_ENABLE_HQ_RESAMPLER)
for(size_t i = 0; i < frames; ++i)
{
int16_t frame[2];
generateResampledHq(frame);
output[0] += (int32_t)frame[0];
output[1] += (int32_t)frame[1];
output += 2;
}
#else
opl3_chip *chip_r = reinterpret_cast<opl3_chip*>(m_chip);
OPL3v17_GenerateStreamMix(chip_r, output, (Bit32u)frames);
#endif
return (int)frames;
}
int NukedOPL3v174::generate32(int32_t *output, size_t frames)
{
opl3_chip *chip_r = reinterpret_cast<opl3_chip*>(m_chip);
for(size_t i = 0; i < frames; ++i) {
#if defined(ADLMIDI_ENABLE_HQ_RESAMPLER)
(void)chip_r;
generateResampledHq32(output);
#else
int16_t frame[2];
OPL3v17_GenerateResampled(chip_r, frame);
output[0] = (int32_t)frame[0];
output[1] = (int32_t)frame[1];
#endif
output += 2;
}
return (int)frames;
}
int NukedOPL3v174::generateAndMix32(int32_t *output, size_t frames)
{
opl3_chip *chip_r = reinterpret_cast<opl3_chip*>(m_chip);
for(size_t i = 0; i < frames; ++i) {
#if defined(ADLMIDI_ENABLE_HQ_RESAMPLER)
(void)chip_r;
int32_t frame[2];
generateResampledHq32(frame);
#else
int16_t frame[2];
OPL3v17_GenerateResampled(chip_r, frame);
#endif
output[0] += (int32_t)frame[0];
output[1] += (int32_t)frame[1];
output += 2;
}
return (int)frames;
}
#if defined(ADLMIDI_ENABLE_HQ_RESAMPLER)
void NukedOPL3v174::generateResampledHq(int16_t *out)
{
int32_t temps[2];
generateResampledHq32(temps);
for(unsigned i = 0; i < 2; ++i)
{
int32_t temp = temps[i];
temp = (temp > -32768) ? temp : -32768;
temp = (temp < 32767) ? temp : 32767;
out[i] = temp;
}
}
void NukedOPL3v174::generateResampledHq32(int32_t *out)
{
opl3_chip *chip_r = reinterpret_cast<opl3_chip*>(m_chip);
VResampler *rsm = m_resampler;
float f_in[2];
float f_out[2];
rsm->inp_count = 0;
rsm->inp_data = f_in;
rsm->out_count = 1;
rsm->out_data = f_out;
while(rsm->process(), rsm->out_count != 0)
{
int16_t in[2];
OPL3v17_Generate(chip_r, in);
f_in[0] = (float)in[0], f_in[1] = (float)in[1];
rsm->inp_count = 1;
rsm->inp_data = f_in;
rsm->out_count = 1;
rsm->out_data = f_out;
}
out[0] = std::lround(f_out[0]);
out[1] = std::lround(f_out[1]);
}
#endif
const char *NukedOPL3v174::emulatorName()
{
return "Nuked OPL3 (v 1.7.4)";
}
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