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#include "module_ccsds_turbo_decoder.h"
#include "logger.h"
#include "common/widgets/themed_widgets.h"
#include "common/utils.h"
#include "common/codings/rotation.h"
#include "common/codings/randomization.h"
#include "common/codings/turbo/ccsds_turbo.h"
#include "common/codings/crc/crc_generic.h"
#include "core/exception.h"
namespace ccsds
{
CCSDSTurboDecoderModule::CCSDSTurboDecoderModule(std::string input_file, std::string output_file_hint, nlohmann::json parameters)
: ProcessingModule(input_file, output_file_hint, parameters)
{
if (parameters.contains("turbo_rate"))
d_turbo_rate = parameters["turbo_rate"].get<std::string>();
else
throw satdump_exception("Turbo Rate is required!");
if (parameters.contains("turbo_base"))
d_turbo_base = parameters["turbo_base"].get<int>();
else
throw satdump_exception("Turbo Base is required!");
if (parameters.contains("turbo_iters"))
d_turbo_iters = parameters["turbo_iters"].get<int>();
else
throw satdump_exception("Turbo Iters is required!");
if (!(d_turbo_base == 223 || d_turbo_base == 446 || d_turbo_base == 892 || d_turbo_base == 1115))
throw satdump_exception("Turbo Base must be 223, 446, 892 or 1115!");
if (d_turbo_rate == "1/2")
{
// Generate ASM softs. 0x034776C7272895B0
uint8_t asm_bits[] = {0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1,
0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1, 1,
0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1,
0, 0, 0, 0};
for (int i = 0; i < 64; i++)
asm_softs[i] = asm_bits[i] ? 1.0f : -1.0f;
d_asm_size = 64;
if (d_turbo_base == 223)
d_codeword_size = 3576;
else if (d_turbo_base == 446)
d_codeword_size = 7144;
else if (d_turbo_base == 892)
d_codeword_size = 14280;
else if (d_turbo_base == 1115)
d_codeword_size = 17848;
}
else if (d_turbo_rate == "1/3")
{
// Generate ASM softs. 0x25D5C0CE8990F6C9461BF79C
uint8_t asm_bits[] = {0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0,
0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1,
1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 0,
1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1,
1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0};
for (int i = 0; i < 96; i++)
asm_softs[i] = asm_bits[i] ? 1.0f : -1.0f;
d_asm_size = 96;
if (d_turbo_base == 223)
d_codeword_size = 5364;
else if (d_turbo_base == 446)
d_codeword_size = 10716;
else if (d_turbo_base == 892)
d_codeword_size = 21420;
else if (d_turbo_base == 1115)
d_codeword_size = 26772;
}
else if (d_turbo_rate == "1/4")
{
// Generate ASM softs. 0x034776C7272895B0FCB88938D8D76A4F
uint8_t asm_bits[] = {0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1,
0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1, 1,
0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1,
0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0,
1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1,
1, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0,
0, 1, 0, 0, 1, 1, 1, 1};
for (int i = 0; i < 128; i++)
asm_softs[i] = asm_bits[i] ? 1.0f : -1.0f;
d_asm_size = 128;
if (d_turbo_base == 223)
d_codeword_size = 7152;
else if (d_turbo_base == 446)
d_codeword_size = 14288;
else if (d_turbo_base == 892)
d_codeword_size = 28560;
else if (d_turbo_base == 1115)
d_codeword_size = 35696;
}
else if (d_turbo_rate == "1/6")
{
// Generate ASM softs. 0x25D5C0CE8990F6C9461BF79CDA2A3F31766F0936B9E40863
uint8_t asm_bits[] = {0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0,
0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1,
1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 0,
1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1,
1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1,
1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1,
0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0,
1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0,
1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0,
1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1};
for (int i = 0; i < 192; i++)
asm_softs[i] = asm_bits[i] ? 1.0f : -1.0f;
d_asm_size = 192;
if (d_turbo_base == 223)
d_codeword_size = 10728;
else if (d_turbo_base == 446)
d_codeword_size = 21432;
else if (d_turbo_base == 892)
d_codeword_size = 42840;
else if (d_turbo_base == 1115)
d_codeword_size = 53544;
}
else
throw satdump_exception("Invalid Turbo Rate!");
d_frame_size = d_codeword_size + d_asm_size;
buffer_soft = new int8_t[d_frame_size];
buffer_floats = new float[d_frame_size];
window_name = "CCSDS Turbo r=" + d_turbo_rate + " b=" + std::to_string(d_turbo_base) + " Decoder";
}
std::vector<ModuleDataType> CCSDSTurboDecoderModule::getInputTypes()
{
return {DATA_FILE, DATA_STREAM};
}
std::vector<ModuleDataType> CCSDSTurboDecoderModule::getOutputTypes()
{
return {DATA_FILE};
}
CCSDSTurboDecoderModule::~CCSDSTurboDecoderModule()
{
delete[] buffer_soft;
delete[] buffer_floats;
}
void CCSDSTurboDecoderModule::process()
{
if (input_data_type == DATA_FILE)
filesize = getFilesize(d_input_file);
else
filesize = 0;
if (input_data_type == DATA_FILE)
data_in = std::ifstream(d_input_file, std::ios::binary);
data_out = std::ofstream(d_output_file_hint + ".cadu", std::ios::binary);
d_output_files.push_back(d_output_file_hint + ".cadu");
logger->info("Using input symbols " + d_input_file);
logger->info("Decoding to " + d_output_file_hint + ".cadu");
codings::turbo::turbo_rate_t frate = codings::turbo::RATE_1_2;
if (d_turbo_rate == "1/2")
frate = codings::turbo::RATE_1_2;
else if (d_turbo_rate == "1/3")
frate = codings::turbo::RATE_1_3;
else if (d_turbo_rate == "1/4")
frate = codings::turbo::RATE_1_4;
else if (d_turbo_rate == "1/6")
frate = codings::turbo::RATE_1_6;
codings::turbo::CCSDSTurbo turbo_dec((codings::turbo::turbo_base_t)d_turbo_base, frate);
codings::crc::GenericCRC crc_check(16, 0x1021, 0xFFFF, 0x0, false, false);
uint8_t output_frame_buffer[1115 + 4];
time_t lastTime = 0;
while (input_data_type == DATA_FILE ? !data_in.eof() : input_active.load())
{
// Read a buffer
if (input_data_type == DATA_FILE)
data_in.read((char *)buffer_soft, d_frame_size);
else
input_fifo->read((uint8_t *)buffer_soft, d_frame_size);
volk_8i_s32f_convert_32f(buffer_floats, buffer_soft, 127, d_frame_size);
// Correlate. Slow, but Turbo rate 1/6 shouldn't be used on fast links
int best_pos = 0;
float best_cor = 0;
bool best_swapped = false;
float corr_value = 0;
for (int pos = 0; pos < d_frame_size - d_asm_size; pos++)
{
volk_32f_x2_dot_prod_32f(&corr_value, &buffer_floats[pos], asm_softs, d_asm_size);
if (corr_value > best_cor)
{
best_cor = corr_value;
best_pos = pos;
best_swapped = false;
}
if (-corr_value > best_cor)
{
best_cor = -corr_value;
best_pos = pos;
best_swapped = true;
}
// logger->critical("%d %f %f", pos, corr_nwap, corr_swap);
}
locked = best_pos == 0; // Update locking state
cor = best_cor;
if (best_pos != 0 && best_pos < d_frame_size) // Safety
{
std::memmove(buffer_soft, &buffer_soft[best_pos], best_pos);
if (input_data_type == DATA_FILE)
data_in.read((char *)&buffer_soft[d_frame_size - best_pos], best_pos);
else
input_fifo->read((uint8_t *)&buffer_soft[d_frame_size - best_pos], best_pos);
}
derand_ccsds_soft(&buffer_soft[d_asm_size], d_codeword_size);
volk_8i_s32f_convert_32f(buffer_floats, buffer_soft, 127.0, d_frame_size);
// logger->critical(best_pos);
if (best_swapped) // Swap if required
for (int i = 0; i < d_frame_size; i++)
buffer_floats[i] = -buffer_floats[i];
turbo_dec.decode(&buffer_floats[d_asm_size], &output_frame_buffer[4], d_turbo_iters);
output_frame_buffer[0] = 0x1a;
output_frame_buffer[1] = 0xcf;
output_frame_buffer[2] = 0xfc;
output_frame_buffer[3] = 0x1d;
// Check CRC
uint16_t compu_crc = crc_check.compute(&output_frame_buffer[4], d_turbo_base - 2);
uint16_t local_crc = output_frame_buffer[(d_turbo_base + 4) - 2] << 8 | output_frame_buffer[(d_turbo_base + 4) - 1];
crc_lock = compu_crc == local_crc;
if (crc_lock)
data_out.write((char *)output_frame_buffer, (d_turbo_base + 4));
if (input_data_type == DATA_FILE)
progress = data_in.tellg();
if (time(NULL) % 10 == 0 && lastTime != time(NULL))
{
lastTime = time(NULL);
std::string lock_state = locked ? "SYNCED" : "NOSYNC";
logger->info("Progress " + std::to_string(round(((double)progress / (double)filesize) * 1000.0f) / 10.0f) + "%%, Lock : " + lock_state);
}
}
data_out.close();
if (input_data_type == DATA_FILE)
data_in.close();
}
void CCSDSTurboDecoderModule::drawUI(bool window)
{
ImGui::Begin(window_name.c_str(), NULL, window ? 0 : NOWINDOW_FLAGS);
ImGui::BeginGroup();
{
ImGui::Button("Correlator", {200 * ui_scale, 20 * ui_scale});
{
ImGui::Text("Corr : ");
ImGui::SameLine();
ImGui::TextColored(locked ? style::theme.green : style::theme.orange, UITO_C_STR(cor));
std::memmove(&cor_history[0], &cor_history[1], (200 - 1) * sizeof(float));
cor_history[200 - 1] = cor;
widgets::ThemedPlotLines(style::theme.plot_bg.Value, "", cor_history, IM_ARRAYSIZE(cor_history), 0, "", 0.0f, 100.0f,
ImVec2(200 * ui_scale, 50 * ui_scale));
}
ImGui::Button("CRC Check", {200 * ui_scale, 20 * ui_scale});
{
ImGui::Text("Check : ");
ImGui::SameLine();
ImGui::TextColored(crc_lock ? style::theme.green : style::theme.orange, crc_lock ? "PASS" : "FAIL");
}
}
ImGui::EndGroup();
if (!streamingInput)
ImGui::ProgressBar((double)progress / (double)filesize, ImVec2(ImGui::GetContentRegionAvail().x, 20 * ui_scale));
ImGui::End();
}
std::string CCSDSTurboDecoderModule::getID()
{
return "ccsds_turbo_decoder";
}
std::vector<std::string> CCSDSTurboDecoderModule::getParameters()
{
return {};
}
std::shared_ptr<ProcessingModule> CCSDSTurboDecoderModule::getInstance(std::string input_file, std::string output_file_hint, nlohmann::json parameters)
{
return std::make_shared<CCSDSTurboDecoderModule>(input_file, output_file_hint, parameters);
}
} // namespace meteor
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