openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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#include "selfdrive/modeld/models/driving.h"
#include <fcntl.h>
#include <unistd.h>
#include <cassert>
#include <cstring>
#include <eigen3/Eigen/Dense>
#include "common/clutil.h"
#include "common/params.h"
#include "common/timing.h"
#include "common/swaglog.h"
#include "common/transformations/orientation.hpp"
mat3 update_calibration(float *device_from_calib_euler, bool wide_camera, bool bigmodel_frame) {
/*
import numpy as np
from common.transformations.model import medmodel_frame_from_calib_frame
medmodel_frame_from_calib_frame = medmodel_frame_from_calib_frame[:, :3]
calib_from_smedmodel_frame = np.linalg.inv(medmodel_frame_from_calib_frame)
*/
static const auto calib_from_medmodel = (Eigen::Matrix<float, 3, 3>() <<
0.00000000e+00, 0.00000000e+00, 1.00000000e+00,
1.09890110e-03, 0.00000000e+00, -2.81318681e-01,
-2.25466395e-20, 1.09890110e-03, -5.23076923e-02).finished();
static const auto calib_from_sbigmodel = (Eigen::Matrix<float, 3, 3>() <<
0.00000000e+00, 7.31372216e-19, 1.00000000e+00,
2.19780220e-03, 4.11497335e-19, -5.62637363e-01,
-6.66298828e-20, 2.19780220e-03, -3.33626374e-01).finished();
static const auto view_from_device = (Eigen::Matrix<float, 3, 3>() <<
0.0, 1.0, 0.0,
0.0, 0.0, 1.0,
1.0, 0.0, 0.0).finished();
Eigen::Vector3d device_from_calib_euler_vec;
for (int i=0; i<3; i++) {
device_from_calib_euler_vec(i) = device_from_calib_euler[i];
}
const auto cam_intrinsics = Eigen::Matrix<float, 3, 3, Eigen::RowMajor>(wide_camera ? ECAM_INTRINSIC_MATRIX.v : FCAM_INTRINSIC_MATRIX.v);
Eigen::Matrix<float, 3, 3, Eigen::RowMajor> device_from_calib = euler2rot(device_from_calib_euler_vec).cast <float> ();
auto calib_from_model = bigmodel_frame ? calib_from_sbigmodel : calib_from_medmodel;
auto camera_from_calib = cam_intrinsics * view_from_device * device_from_calib;
auto warp_matrix = camera_from_calib * calib_from_model;
mat3 transform = {};
for (int i=0; i<3*3; i++) {
transform.v[i] = warp_matrix(i / 3, i % 3);
}
return transform;
}
void fill_lead(cereal::ModelDataV2::LeadDataV3::Builder lead, const ModelOutputLeads &leads, int t_idx, float prob_t) {
std::array<float, LEAD_TRAJ_LEN> lead_t = {0.0, 2.0, 4.0, 6.0, 8.0, 10.0};
const auto &best_prediction = leads.get_best_prediction(t_idx);
lead.setProb(sigmoid(leads.prob[t_idx]));
lead.setProbTime(prob_t);
std::array<float, LEAD_TRAJ_LEN> lead_x, lead_y, lead_v, lead_a;
std::array<float, LEAD_TRAJ_LEN> lead_x_std, lead_y_std, lead_v_std, lead_a_std;
for (int i=0; i<LEAD_TRAJ_LEN; i++) {
lead_x[i] = best_prediction.mean[i].x;
lead_y[i] = best_prediction.mean[i].y;
lead_v[i] = best_prediction.mean[i].velocity;
lead_a[i] = best_prediction.mean[i].acceleration;
lead_x_std[i] = exp(best_prediction.std[i].x);
lead_y_std[i] = exp(best_prediction.std[i].y);
lead_v_std[i] = exp(best_prediction.std[i].velocity);
lead_a_std[i] = exp(best_prediction.std[i].acceleration);
}
lead.setT(to_kj_array_ptr(lead_t));
lead.setX(to_kj_array_ptr(lead_x));
lead.setY(to_kj_array_ptr(lead_y));
lead.setV(to_kj_array_ptr(lead_v));
lead.setA(to_kj_array_ptr(lead_a));
lead.setXStd(to_kj_array_ptr(lead_x_std));
lead.setYStd(to_kj_array_ptr(lead_y_std));
lead.setVStd(to_kj_array_ptr(lead_v_std));
lead.setAStd(to_kj_array_ptr(lead_a_std));
}
void fill_meta(cereal::ModelDataV2::MetaData::Builder meta, const ModelOutputMeta &meta_data, PublishState &ps) {
std::array<float, DESIRE_LEN> desire_state_softmax;
softmax(meta_data.desire_state_prob.array.data(), desire_state_softmax.data(), DESIRE_LEN);
std::array<float, DESIRE_PRED_LEN * DESIRE_LEN> desire_pred_softmax;
for (int i=0; i<DESIRE_PRED_LEN; i++) {
softmax(meta_data.desire_pred_prob[i].array.data(), desire_pred_softmax.data() + (i * DESIRE_LEN), DESIRE_LEN);
}
std::array<float, DISENGAGE_LEN> lat_long_t = {2, 4, 6, 8, 10};
std::array<float, DISENGAGE_LEN> gas_disengage_sigmoid, brake_disengage_sigmoid, steer_override_sigmoid,
brake_3ms2_sigmoid, brake_4ms2_sigmoid, brake_5ms2_sigmoid;
for (int i=0; i<DISENGAGE_LEN; i++) {
gas_disengage_sigmoid[i] = sigmoid(meta_data.disengage_prob[i].gas_disengage);
brake_disengage_sigmoid[i] = sigmoid(meta_data.disengage_prob[i].brake_disengage);
steer_override_sigmoid[i] = sigmoid(meta_data.disengage_prob[i].steer_override);
brake_3ms2_sigmoid[i] = sigmoid(meta_data.disengage_prob[i].brake_3ms2);
brake_4ms2_sigmoid[i] = sigmoid(meta_data.disengage_prob[i].brake_4ms2);
brake_5ms2_sigmoid[i] = sigmoid(meta_data.disengage_prob[i].brake_5ms2);
//gas_pressed_sigmoid[i] = sigmoid(meta_data.disengage_prob[i].gas_pressed);
}
std::memmove(ps.prev_brake_5ms2_probs.data(), &ps.prev_brake_5ms2_probs[1], 4*sizeof(float));
std::memmove(ps.prev_brake_3ms2_probs.data(), &ps.prev_brake_3ms2_probs[1], 2*sizeof(float));
ps.prev_brake_5ms2_probs[4] = brake_5ms2_sigmoid[0];
ps.prev_brake_3ms2_probs[2] = brake_3ms2_sigmoid[0];
bool above_fcw_threshold = true;
for (int i=0; i<ps.prev_brake_5ms2_probs.size(); i++) {
float threshold = i < 2 ? FCW_THRESHOLD_5MS2_LOW : FCW_THRESHOLD_5MS2_HIGH;
above_fcw_threshold = above_fcw_threshold && ps.prev_brake_5ms2_probs[i] > threshold;
}
for (int i=0; i<ps.prev_brake_3ms2_probs.size(); i++) {
above_fcw_threshold = above_fcw_threshold && ps.prev_brake_3ms2_probs[i] > FCW_THRESHOLD_3MS2;
}
auto disengage = meta.initDisengagePredictions();
disengage.setT(to_kj_array_ptr(lat_long_t));
disengage.setGasDisengageProbs(to_kj_array_ptr(gas_disengage_sigmoid));
disengage.setBrakeDisengageProbs(to_kj_array_ptr(brake_disengage_sigmoid));
disengage.setSteerOverrideProbs(to_kj_array_ptr(steer_override_sigmoid));
disengage.setBrake3MetersPerSecondSquaredProbs(to_kj_array_ptr(brake_3ms2_sigmoid));
disengage.setBrake4MetersPerSecondSquaredProbs(to_kj_array_ptr(brake_4ms2_sigmoid));
disengage.setBrake5MetersPerSecondSquaredProbs(to_kj_array_ptr(brake_5ms2_sigmoid));
meta.setEngagedProb(sigmoid(meta_data.engaged_prob));
meta.setDesirePrediction(to_kj_array_ptr(desire_pred_softmax));
meta.setDesireState(to_kj_array_ptr(desire_state_softmax));
meta.setHardBrakePredicted(above_fcw_threshold);
}
void fill_confidence(cereal::ModelDataV2::Builder &framed, PublishState &ps) {
if (framed.getFrameId() % (2*MODEL_FREQ) == 0) {
// update every 2s to match predictions interval
auto dbps = framed.getMeta().getDisengagePredictions().getBrakeDisengageProbs();
auto dgps = framed.getMeta().getDisengagePredictions().getGasDisengageProbs();
auto dsps = framed.getMeta().getDisengagePredictions().getSteerOverrideProbs();
float any_dp[DISENGAGE_LEN];
float dp_ind[DISENGAGE_LEN];
for (int i = 0; i < DISENGAGE_LEN; i++) {
any_dp[i] = 1 - ((1-dbps[i])*(1-dgps[i])*(1-dsps[i])); // any disengage prob
}
dp_ind[0] = any_dp[0];
for (int i = 0; i < DISENGAGE_LEN-1; i++) {
dp_ind[i+1] = (any_dp[i+1] - any_dp[i]) / (1 - any_dp[i]); // independent disengage prob for each 2s slice
}
// rolling buf for 2, 4, 6, 8, 10s
std::memmove(&ps.disengage_buffer[0], &ps.disengage_buffer[DISENGAGE_LEN], sizeof(float) * DISENGAGE_LEN * (DISENGAGE_LEN-1));
std::memcpy(&ps.disengage_buffer[DISENGAGE_LEN * (DISENGAGE_LEN-1)], &dp_ind[0], sizeof(float) * DISENGAGE_LEN);
}
float score = 0;
for (int i = 0; i < DISENGAGE_LEN; i++) {
score += ps.disengage_buffer[i*DISENGAGE_LEN+DISENGAGE_LEN-1-i] / DISENGAGE_LEN;
}
if (score < RYG_GREEN) {
framed.setConfidence(cereal::ModelDataV2::ConfidenceClass::GREEN);
} else if (score < RYG_YELLOW) {
framed.setConfidence(cereal::ModelDataV2::ConfidenceClass::YELLOW);
} else {
framed.setConfidence(cereal::ModelDataV2::ConfidenceClass::RED);
}
}
template<size_t size>
void fill_xyzt(cereal::XYZTData::Builder xyzt, const std::array<float, size> &t,
const std::array<float, size> &x, const std::array<float, size> &y, const std::array<float, size> &z) {
xyzt.setT(to_kj_array_ptr(t));
xyzt.setX(to_kj_array_ptr(x));
xyzt.setY(to_kj_array_ptr(y));
xyzt.setZ(to_kj_array_ptr(z));
}
template<size_t size>
void fill_xyzt(cereal::XYZTData::Builder xyzt, const std::array<float, size> &t,
const std::array<float, size> &x, const std::array<float, size> &y, const std::array<float, size> &z,
const std::array<float, size> &x_std, const std::array<float, size> &y_std, const std::array<float, size> &z_std) {
fill_xyzt(xyzt, t, x, y, z);
xyzt.setXStd(to_kj_array_ptr(x_std));
xyzt.setYStd(to_kj_array_ptr(y_std));
xyzt.setZStd(to_kj_array_ptr(z_std));
}
void fill_plan(cereal::ModelDataV2::Builder &framed, const ModelOutputPlanPrediction &plan) {
std::array<float, TRAJECTORY_SIZE> pos_x, pos_y, pos_z;
std::array<float, TRAJECTORY_SIZE> pos_x_std, pos_y_std, pos_z_std;
std::array<float, TRAJECTORY_SIZE> vel_x, vel_y, vel_z;
std::array<float, TRAJECTORY_SIZE> rot_x, rot_y, rot_z;
std::array<float, TRAJECTORY_SIZE> acc_x, acc_y, acc_z;
std::array<float, TRAJECTORY_SIZE> rot_rate_x, rot_rate_y, rot_rate_z;
for (int i=0; i<TRAJECTORY_SIZE; i++) {
pos_x[i] = plan.mean[i].position.x;
pos_y[i] = plan.mean[i].position.y;
pos_z[i] = plan.mean[i].position.z;
pos_x_std[i] = exp(plan.std[i].position.x);
pos_y_std[i] = exp(plan.std[i].position.y);
pos_z_std[i] = exp(plan.std[i].position.z);
vel_x[i] = plan.mean[i].velocity.x;
vel_y[i] = plan.mean[i].velocity.y;
vel_z[i] = plan.mean[i].velocity.z;
acc_x[i] = plan.mean[i].acceleration.x;
acc_y[i] = plan.mean[i].acceleration.y;
acc_z[i] = plan.mean[i].acceleration.z;
rot_x[i] = plan.mean[i].rotation.x;
rot_y[i] = plan.mean[i].rotation.y;
rot_z[i] = plan.mean[i].rotation.z;
rot_rate_x[i] = plan.mean[i].rotation_rate.x;
rot_rate_y[i] = plan.mean[i].rotation_rate.y;
rot_rate_z[i] = plan.mean[i].rotation_rate.z;
}
fill_xyzt(framed.initPosition(), T_IDXS_FLOAT, pos_x, pos_y, pos_z, pos_x_std, pos_y_std, pos_z_std);
fill_xyzt(framed.initVelocity(), T_IDXS_FLOAT, vel_x, vel_y, vel_z);
fill_xyzt(framed.initAcceleration(), T_IDXS_FLOAT, acc_x, acc_y, acc_z);
fill_xyzt(framed.initOrientation(), T_IDXS_FLOAT, rot_x, rot_y, rot_z);
fill_xyzt(framed.initOrientationRate(), T_IDXS_FLOAT, rot_rate_x, rot_rate_y, rot_rate_z);
}
void fill_lane_lines(cereal::ModelDataV2::Builder &framed, const std::array<float, TRAJECTORY_SIZE> &plan_t,
const ModelOutputLaneLines &lanes) {
std::array<float, TRAJECTORY_SIZE> left_far_y, left_far_z;
std::array<float, TRAJECTORY_SIZE> left_near_y, left_near_z;
std::array<float, TRAJECTORY_SIZE> right_near_y, right_near_z;
std::array<float, TRAJECTORY_SIZE> right_far_y, right_far_z;
for (int j=0; j<TRAJECTORY_SIZE; j++) {
left_far_y[j] = lanes.mean.left_far[j].y;
left_far_z[j] = lanes.mean.left_far[j].z;
left_near_y[j] = lanes.mean.left_near[j].y;
left_near_z[j] = lanes.mean.left_near[j].z;
right_near_y[j] = lanes.mean.right_near[j].y;
right_near_z[j] = lanes.mean.right_near[j].z;
right_far_y[j] = lanes.mean.right_far[j].y;
right_far_z[j] = lanes.mean.right_far[j].z;
}
auto lane_lines = framed.initLaneLines(4);
fill_xyzt(lane_lines[0], plan_t, X_IDXS_FLOAT, left_far_y, left_far_z);
fill_xyzt(lane_lines[1], plan_t, X_IDXS_FLOAT, left_near_y, left_near_z);
fill_xyzt(lane_lines[2], plan_t, X_IDXS_FLOAT, right_near_y, right_near_z);
fill_xyzt(lane_lines[3], plan_t, X_IDXS_FLOAT, right_far_y, right_far_z);
framed.setLaneLineStds({
exp(lanes.std.left_far[0].y),
exp(lanes.std.left_near[0].y),
exp(lanes.std.right_near[0].y),
exp(lanes.std.right_far[0].y),
});
framed.setLaneLineProbs({
sigmoid(lanes.prob.left_far.val),
sigmoid(lanes.prob.left_near.val),
sigmoid(lanes.prob.right_near.val),
sigmoid(lanes.prob.right_far.val),
});
}
void fill_road_edges(cereal::ModelDataV2::Builder &framed, const std::array<float, TRAJECTORY_SIZE> &plan_t,
const ModelOutputRoadEdges &edges) {
std::array<float, TRAJECTORY_SIZE> left_y, left_z;
std::array<float, TRAJECTORY_SIZE> right_y, right_z;
for (int j=0; j<TRAJECTORY_SIZE; j++) {
left_y[j] = edges.mean.left[j].y;
left_z[j] = edges.mean.left[j].z;
right_y[j] = edges.mean.right[j].y;
right_z[j] = edges.mean.right[j].z;
}
auto road_edges = framed.initRoadEdges(2);
fill_xyzt(road_edges[0], plan_t, X_IDXS_FLOAT, left_y, left_z);
fill_xyzt(road_edges[1], plan_t, X_IDXS_FLOAT, right_y, right_z);
framed.setRoadEdgeStds({
exp(edges.std.left[0].y),
exp(edges.std.right[0].y),
});
}
void fill_model(cereal::ModelDataV2::Builder &framed, const ModelOutput &net_outputs, PublishState &ps) {
const auto &best_plan = net_outputs.plans.get_best_prediction();
std::array<float, TRAJECTORY_SIZE> plan_t;
std::fill_n(plan_t.data(), plan_t.size(), NAN);
plan_t[0] = 0.0;
for (int xidx=1, tidx=0; xidx<TRAJECTORY_SIZE; xidx++) {
// increment tidx until we find an element that's further away than the current xidx
for (int next_tid = tidx + 1; next_tid < TRAJECTORY_SIZE && best_plan.mean[next_tid].position.x < X_IDXS[xidx]; next_tid++) {
tidx++;
}
if (tidx == TRAJECTORY_SIZE - 1) {
// if the Plan doesn't extend far enough, set plan_t to the max value (10s), then break
plan_t[xidx] = T_IDXS[TRAJECTORY_SIZE - 1];
break;
}
// interpolate to find `t` for the current xidx
float current_x_val = best_plan.mean[tidx].position.x;
float next_x_val = best_plan.mean[tidx+1].position.x;
float p = (X_IDXS[xidx] - current_x_val) / (next_x_val - current_x_val);
plan_t[xidx] = p * T_IDXS[tidx+1] + (1 - p) * T_IDXS[tidx];
}
fill_plan(framed, best_plan);
fill_lane_lines(framed, plan_t, net_outputs.lane_lines);
fill_road_edges(framed, plan_t, net_outputs.road_edges);
// meta
fill_meta(framed.initMeta(), net_outputs.meta, ps);
// confidence
fill_confidence(framed, ps);
// leads
auto leads = framed.initLeadsV3(LEAD_MHP_SELECTION);
std::array<float, LEAD_MHP_SELECTION> t_offsets = {0.0, 2.0, 4.0};
for (int i=0; i<LEAD_MHP_SELECTION; i++) {
fill_lead(leads[i], net_outputs.leads, i, t_offsets[i]);
}
// temporal pose
const auto &v_mean = net_outputs.temporal_pose.velocity_mean;
const auto &r_mean = net_outputs.temporal_pose.rotation_mean;
const auto &v_std = net_outputs.temporal_pose.velocity_std;
const auto &r_std = net_outputs.temporal_pose.rotation_std;
auto temporal_pose = framed.initTemporalPose();
temporal_pose.setTrans({v_mean.x, v_mean.y, v_mean.z});
temporal_pose.setRot({r_mean.x, r_mean.y, r_mean.z});
temporal_pose.setTransStd({exp(v_std.x), exp(v_std.y), exp(v_std.z)});
temporal_pose.setRotStd({exp(r_std.x), exp(r_std.y), exp(r_std.z)});
}
void fill_model_msg(MessageBuilder &msg, float *net_output_data, PublishState &ps, uint32_t vipc_frame_id, uint32_t vipc_frame_id_extra, uint32_t frame_id, float frame_drop,
uint64_t timestamp_eof, uint64_t timestamp_llk, float model_execution_time, const bool nav_enabled, const bool valid) {
const uint32_t frame_age = (frame_id > vipc_frame_id) ? (frame_id - vipc_frame_id) : 0;
auto framed = msg.initEvent(valid).initModelV2();
framed.setFrameId(vipc_frame_id);
framed.setFrameIdExtra(vipc_frame_id_extra);
framed.setFrameAge(frame_age);
framed.setFrameDropPerc(frame_drop * 100);
framed.setTimestampEof(timestamp_eof);
framed.setLocationMonoTime(timestamp_llk);
framed.setModelExecutionTime(model_execution_time);
framed.setNavEnabled(nav_enabled);
if (send_raw_pred) {
framed.setRawPredictions(kj::ArrayPtr<const float>(net_output_data, NET_OUTPUT_SIZE).asBytes());
}
fill_model(framed, *((ModelOutput*) net_output_data), ps);
}
void fill_pose_msg(MessageBuilder &msg, float *net_output_data, uint32_t vipc_frame_id, uint32_t vipc_dropped_frames, uint64_t timestamp_eof, const bool valid) {
const ModelOutput &net_outputs = *((ModelOutput*) net_output_data);
const auto &v_mean = net_outputs.pose.velocity_mean;
const auto &r_mean = net_outputs.pose.rotation_mean;
const auto &t_mean = net_outputs.wide_from_device_euler.mean;
const auto &v_std = net_outputs.pose.velocity_std;
const auto &r_std = net_outputs.pose.rotation_std;
const auto &t_std = net_outputs.wide_from_device_euler.std;
const auto &road_transform_trans_mean = net_outputs.road_transform.position_mean;
const auto &road_transform_trans_std = net_outputs.road_transform.position_std;
auto posenetd = msg.initEvent(valid && (vipc_dropped_frames < 1)).initCameraOdometry();
posenetd.setTrans({v_mean.x, v_mean.y, v_mean.z});
posenetd.setRot({r_mean.x, r_mean.y, r_mean.z});
posenetd.setWideFromDeviceEuler({t_mean.x, t_mean.y, t_mean.z});
posenetd.setRoadTransformTrans({road_transform_trans_mean.x, road_transform_trans_mean.y, road_transform_trans_mean.z});
posenetd.setTransStd({exp(v_std.x), exp(v_std.y), exp(v_std.z)});
posenetd.setRotStd({exp(r_std.x), exp(r_std.y), exp(r_std.z)});
posenetd.setWideFromDeviceEulerStd({exp(t_std.x), exp(t_std.y), exp(t_std.z)});
posenetd.setRoadTransformTransStd({exp(road_transform_trans_std.x), exp(road_transform_trans_std.y), exp(road_transform_trans_std.z)});
posenetd.setTimestampEof(timestamp_eof);
posenetd.setFrameId(vipc_frame_id);
}