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implemented matterhorn transformer for 4 bit dynamic range

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mazzol_a
2026-02-02 20:30:53 +01:00
parent ca03ff7e6b
commit 6604b733dc
5 changed files with 142 additions and 87 deletions
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60
src/decode.cpp
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@@ -1,7 +1,7 @@
// SPDX-License-Identifier: MPL-2.0
#include "aare/decode.hpp"
#include <fmt/format.h>
#include <cmath>
#include <fmt/format.h>
namespace aare {
uint16_t adc_sar_05_06_07_08decode64to16(uint64_t input) {
@@ -24,7 +24,7 @@ uint16_t adc_sar_05_06_07_08decode64to16(uint64_t input) {
}
void adc_sar_05_06_07_08decode64to16(NDView<uint64_t, 2> input,
NDView<uint16_t, 2> output) {
NDView<uint16_t, 2> output) {
if (input.shape() != output.shape()) {
throw std::invalid_argument(LOCATION +
" input and output shapes must match");
@@ -139,49 +139,67 @@ void apply_custom_weights(NDView<uint16_t, 1> input, NDView<double, 1> output,
}
}
uint32_t mask32to24bits(uint32_t input, BitOffset offset){
uint32_t mask32to24bits(uint32_t input, BitOffset offset) {
constexpr uint32_t mask24bits{0xFFFFFF};
return (input >> offset.value()) & mask24bits;
}
void expand24to32bit(NDView<uint8_t,1> input, NDView<uint32_t,1> output, BitOffset bit_offset){
void expand4to8bit(NDView<uint8_t, 1> input, NDView<uint8_t, 1> output) {
ssize_t bytes_per_channel = 3; //24bit
ssize_t min_input_size = output.size()*bytes_per_channel;
if (2 * input.size() != output.size())
throw std::runtime_error(
fmt::format("Mismatch between input and output size. Input "
"size of {} requires an output of at least {} "
"bytes. Called with input size: {} output size: {}",
LOCATION, input.size(), 2 * input.size(), input.size(),
output.size()));
//if we have an offset we need one more byte in the input data
for (ssize_t i = 0; i < input.size(); ++i) {
uint8_t val = input(i);
output[2 * i] = (val & 0x0F);
output[2 * i + 1] = val & 0xF0 >> 4;
}
}
void expand24to32bit(NDView<uint8_t, 1> input, NDView<uint32_t, 1> output,
BitOffset bit_offset) {
ssize_t bytes_per_channel = 3; // 24bit
ssize_t min_input_size = output.size() * bytes_per_channel;
// if we have an offset we need one more byte in the input data
if (bit_offset.value())
min_input_size += 1;
min_input_size += 1;
if (input.size() < min_input_size)
throw std::runtime_error(fmt::format(
"{} Mismatch between input and output size. Output "
"size of {} with bit offset {} requires an input of at least {} "
"bytes. Called with input size: {} output size: {}",
LOCATION, output.size(), bit_offset.value(), min_input_size, input.size(), output.size()));
LOCATION, output.size(), bit_offset.value(), min_input_size,
input.size(), output.size()));
auto* in = input.data();
auto *in = input.data();
if(bit_offset.value()){
//If there is a bit_offset we copy 4 bytes and then
//mask out the correct ones.
for (auto& v : output){
if (bit_offset.value()) {
// If there is a bit_offset we copy 4 bytes and then
// mask out the correct ones.
for (auto &v : output) {
uint32_t val{};
std::memcpy(&val, in, sizeof(val));
v = mask32to24bits(val, bit_offset);
in += bytes_per_channel;
}
}else{
//If there is no offset we can directly copy the bits
//without masking
for (auto& v : output){
}
} else {
// If there is no offset we can directly copy the bits
// without masking
for (auto &v : output) {
uint32_t val{};
std::memcpy(&val, in, 3);
v = val;
in += bytes_per_channel;
}
}
}
}
} // namespace aare