122 lines
4.5 KiB
C++
122 lines
4.5 KiB
C++
// Copyright (2019-2022) Paul Scherrer Institute
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// SPDX-License-Identifier: GPL-3.0-or-later
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#include "JFConversionFixedPoint.h"
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#include "../common/RawToConvertedGeometry.h"
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#define FIXED_PRECISION 14
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JFConversionFixedPoint::JFConversionFixedPoint() {
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gain_g0 = (int32_t *) std::aligned_alloc(64, RAW_MODULE_SIZE * sizeof(int32_t));
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gain_g1 = (int32_t *) std::aligned_alloc(64, RAW_MODULE_SIZE * sizeof(int32_t));
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gain_g2 = (int32_t *) std::aligned_alloc(64, RAW_MODULE_SIZE * sizeof(int32_t));
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pedestal_g0 = (uint16_t *) std::aligned_alloc(64, RAW_MODULE_SIZE * sizeof(uint16_t));
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pedestal_g1 = (uint16_t *) std::aligned_alloc(64, RAW_MODULE_SIZE * sizeof(uint16_t));
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pedestal_g2 = (uint16_t *) std::aligned_alloc(64, RAW_MODULE_SIZE * sizeof(uint16_t));
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}
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JFConversionFixedPoint::~JFConversionFixedPoint() {
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std::free(gain_g0);
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std::free(gain_g1);
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std::free(gain_g2);
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std::free(pedestal_g0);
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std::free(pedestal_g1);
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std::free(pedestal_g2);
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}
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inline int32_t one_over_gain_energy(double gain_factor, double energy) {
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double tmp = gain_factor * energy;
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if (!std::isfinite(tmp) || (tmp == 0.0))
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return INT16_MIN;
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else
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return std::lround((1 << FIXED_PRECISION) / (gain_factor * energy));
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}
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void JFConversionFixedPoint::Setup(const JFModuleGainCalibration &gain_calibration,
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const JFModulePedestal &in_pedestal_g0,
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const JFModulePedestal &in_pedestal_g1,
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const JFModulePedestal &in_pedestal_g2,
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double energy) {
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auto &gain_arr = gain_calibration.GetGainCalibration();
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memcpy(pedestal_g0, in_pedestal_g0.GetPedestal(), RAW_MODULE_SIZE * sizeof(uint16_t));
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memcpy(pedestal_g1, in_pedestal_g1.GetPedestal(), RAW_MODULE_SIZE * sizeof(uint16_t));
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memcpy(pedestal_g2, in_pedestal_g2.GetPedestal(), RAW_MODULE_SIZE * sizeof(uint16_t));
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for (int i = 0; i < RAW_MODULE_SIZE; i++) {
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gain_g0[i] = one_over_gain_energy(gain_arr[i], energy);
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gain_g1[i] = one_over_gain_energy(gain_arr[i + RAW_MODULE_SIZE], energy);
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gain_g2[i] = one_over_gain_energy(gain_arr[i + 2 * RAW_MODULE_SIZE], energy);
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}
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}
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inline int32_t jf_round(int32_t in) {
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const int32_t half = (1L << (FIXED_PRECISION-1));
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if (in > 0)
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return in + half;
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else
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return in - half;
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}
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void JFConversionFixedPoint::ConvertModule(int16_t *dest, const uint16_t *source) {
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auto gain_g0_aligned = std::assume_aligned<64>(gain_g0);
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auto gain_g1_aligned = std::assume_aligned<64>(gain_g1);
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auto gain_g2_aligned = std::assume_aligned<64>(gain_g2);
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auto pedestal_g0_aligned = std::assume_aligned<64>(pedestal_g0);
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auto pedestal_g1_aligned = std::assume_aligned<64>(pedestal_g1);
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auto pedestal_g2_aligned = std::assume_aligned<64>(pedestal_g2);
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for (int i = 0; i < RAW_MODULE_SIZE; i++) {
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uint16_t gainbits = source[i] & 0xc000;
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int32_t adc = source[i] & 0x3fff;
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int32_t val = INT32_MIN;
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switch (gainbits) {
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case 0:
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[[likely]]
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val = (adc - pedestal_g0_aligned[i]) * gain_g0_aligned[i];
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break;
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case 0x4000:
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if (source[i] != 0x4000)
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val = (adc - pedestal_g1_aligned[i]) * gain_g1_aligned[i];
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break;
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case 0xc000:
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if (source[i] == 0xc000)
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val = INT32_MAX;
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else if (source[i] != 0xffff)
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val = (adc - pedestal_g2_aligned[i]) * gain_g2_aligned[i];
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break;
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default:
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break;
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}
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if (val <= INT16_MIN * (1L << FIXED_PRECISION))
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[[unlikely]]
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dest[i] = INT16_MIN;
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else if (val >= INT16_MAX * (1L << FIXED_PRECISION))
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[[unlikely]]
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dest[i] = INT16_MAX;
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else
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dest[i] = static_cast<int16_t>(jf_round(val)/ (1L << FIXED_PRECISION));
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}
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}
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JFConversionFixedPoint::JFConversionFixedPoint(JFConversionFixedPoint &&other) noexcept {
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gain_g0 = other.gain_g0;
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other.gain_g0 = nullptr;
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gain_g1 = other.gain_g1;
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other.gain_g1 = nullptr;
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gain_g2 = other.gain_g2;
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other.gain_g2 = nullptr;
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pedestal_g0 = other.pedestal_g0;
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other.pedestal_g0 = nullptr;
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pedestal_g1 = other.pedestal_g1;
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other.pedestal_g1 = nullptr;
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pedestal_g2 = other.pedestal_g2;
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other.pedestal_g2 = nullptr;
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}
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