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#include "tobii-eyex.hpp"
#include "compat/math-imports.hpp"
#include <tuple>
#include <cstdlib>
#include <cstdio>
#include <QDebug>
#include <QMutexLocker>
#include <QMessageBox>
//#define TOBII_EYEX_DEBUG_PRINTF
#define TOBII_EYEX_VERBOSE_PRINTF
#ifdef TOBII_EYEX_VERBOSE_PRINTF
# define dbg_verbose(msg) (qDebug() << "tobii-eyex:" << (msg))
#else
# define dbg_verbose(msg) (void)0
#endif
#ifdef TOBII_EYEX_DEBUG2_PRINTF
# define dbg_debug(msg) (qDebug() << "tobii-eyex:" << (msg))
#else
# define dbg_debug(msg) (void)0
#endif
#ifdef TOBII_EYEX_DEBUG1_PRINTF
# define dbg_debug(msg) (qDebug() << "tobii-eyex:" << (msg))
#else
# define dbg_debug(msg) (void)0
#endif
#define dbg_notice(msg) (qDebug() << "tobii-eyex:" << (msg))
std::atomic_flag tobii_eyex_tracker::atexit_done = ATOMIC_FLAG_INIT;
static inline tobii_eyex_tracker& to_self(TX_USERPARAM param)
{
return *reinterpret_cast<tobii_eyex_tracker*>(param);
}
tobii_eyex_tracker::tobii_eyex_tracker() = default;
void tobii_eyex_tracker::call_tx_deinit()
{
dbg_notice("uninitialize in atexit at _fini time");
(void) txUninitializeEyeX();
}
tobii_eyex_tracker::~tobii_eyex_tracker()
{
dbg_verbose("dtor");
(void) txDisableConnection(ctx);
(void) txReleaseObject(&state_snapshot);
bool status = true;
status &= txShutdownContext(ctx, TX_CLEANUPTIMEOUT_FORCEIMMEDIATE, TX_FALSE) == TX_RESULT_OK;
status &= txReleaseContext(&ctx) == TX_RESULT_OK;
// the API cleanup function needs to be called exactly once over image lifetime.
// client software communicates with a service and a desktop program.
// API is ambiguous as to what happens if the image doesn't call it or crashes.
if (!atexit_done.test_and_set())
std::atexit(call_tx_deinit);
if (!status)
dbg_notice("tobii-eyex: can't shutdown properly");
}
bool tobii_eyex_tracker::register_state_snapshot(TX_CONTEXTHANDLE dev_ctx, TX_HANDLE* state_snapshot_ptr)
{
TX_HANDLE handle = TX_EMPTY_HANDLE;
TX_GAZEPOINTDATAPARAMS params = { TX_GAZEPOINTDATAMODE_LIGHTLYFILTERED };
bool status = true;
status &= txCreateGlobalInteractorSnapshot(dev_ctx, client_id, state_snapshot_ptr, &handle) == TX_RESULT_OK;
status &= txCreateGazePointDataBehavior(handle, ¶ms) == TX_RESULT_OK;
(void) txReleaseObject(&handle);
return status;
}
void tobii_eyex_tracker::process_display_state(TX_HANDLE display_state_handle)
{
TX_SIZE2 screen_res;
if (txGetStateValueAsSize2(display_state_handle, TX_STATEPATH_EYETRACKINGSCREENBOUNDS, &screen_res) == TX_RESULT_OK)
{
dbg_verbose("got display resolution") << screen_res.Width << screen_res.Height;
QMutexLocker l(&global_state_mtx);
dev_state.display_res_x = screen_res.Width;
dev_state.display_res_y = screen_res.Height;
}
else
dbg_notice("can't get display resolution");
}
void tobii_eyex_tracker::display_state_handler(TX_CONSTHANDLE async_data_handle, TX_USERPARAM param)
{
tobii_eyex_tracker& self = to_self(param);
TX_RESULT result = TX_RESULT_UNKNOWN;
TX_HANDLE state = TX_EMPTY_HANDLE;
if (txGetAsyncDataResultCode(async_data_handle, &result) == TX_RESULT_OK &&
txGetAsyncDataContent(async_data_handle, &state) == TX_RESULT_OK)
{
self.process_display_state(state);
txReleaseObject(&state);
}
else
dbg_notice("error in display state handler");
}
void tobii_eyex_tracker::snapshot_committed_handler(TX_CONSTHANDLE async_data_handle, TX_USERPARAM)
{
TX_RESULT result = TX_RESULT_UNKNOWN;
txGetAsyncDataResultCode(async_data_handle, &result);
if (!(result == TX_RESULT_OK || result == TX_RESULT_CANCELLED))
dbg_notice("snapshot bad result code") << result;
}
void tobii_eyex_tracker::state_change_handler(TX_CONNECTIONSTATE state, TX_USERPARAM param)
{
tobii_eyex_tracker& self = to_self(param);
switch (state)
{
case TX_CONNECTIONSTATE_CONNECTED:
{
bool status = txCommitSnapshotAsync(self.state_snapshot, snapshot_committed_handler, param) == TX_RESULT_OK;
if (!status)
dbg_notice("connected but failed to initialize data stream");
else
{
txGetStateAsync(self.ctx, TX_STATEPATH_EYETRACKINGSCREENBOUNDS, display_state_handler, param);
dbg_notice("connected, data stream ok");
}
}
break;
case TX_CONNECTIONSTATE_DISCONNECTED:
dbg_notice("connection state is now disconnected");
break;
case TX_CONNECTIONSTATE_TRYINGTOCONNECT:
dbg_verbose("trying to establish connection");
break;
case TX_CONNECTIONSTATE_SERVERVERSIONTOOLOW:
dbg_notice("installed driver version too low");
break;
case TX_CONNECTIONSTATE_SERVERVERSIONTOOHIGH:
dbg_notice("new driver came up, we need to update sdk");
break;
}
}
void tobii_eyex_tracker::gaze_data_handler(TX_HANDLE gaze_data_handle)
{
TX_GAZEPOINTDATAEVENTPARAMS params;
if (txGetGazePointDataEventParams(gaze_data_handle, ¶ms) == TX_RESULT_OK)
{
QMutexLocker l(&global_state_mtx);
if (params.Timestamp > dev_state.last_timestamp &&
dev_state.display_res_x > 0 &&
// the API allows for events outside screen bounds to e.g. detect looking at keyboard.
// closer to the screen bounds, the values get less accurate.
// ignore events outside the screen bounds.
params.X >= 0 && params.X < dev_state.display_res_x &&
params.Y >= 0 && params.Y < dev_state.display_res_y)
{
dev_state.last_timestamp = params.Timestamp;
dev_state.px = params.X;
dev_state.py = params.Y;
#ifdef TOBII_EYEX_DEBUG2_PRINTF
char buf[256] = {0};
(void) std::sprintf(buf, "gaze data: (%.1f, %.1f)", params.X, params.Y);
dbg_debug(buf);
#endif
dev_state.fresh = true;
}
}
else
dbg_notice("failed to process gaze data event packet");
}
void tobii_eyex_tracker::event_handler(TX_CONSTHANDLE async_data_handle, TX_USERPARAM param)
{
tobii_eyex_tracker& self = to_self(param);
TX_HANDLE event_handle = TX_EMPTY_HANDLE;
TX_HANDLE behavior_handle = TX_EMPTY_HANDLE;
txGetAsyncDataContent(async_data_handle, &event_handle);
if (txGetEventBehavior(event_handle, &behavior_handle, TX_BEHAVIORTYPE_GAZEPOINTDATA) == TX_RESULT_OK)
{
self.gaze_data_handler(behavior_handle);
txReleaseObject(&behavior_handle);
}
txReleaseObject(&event_handle);
}
module_status tobii_eyex_tracker::start_tracker(QFrame*)
{
bool status = true;
status &= txInitializeEyeX(TX_EYEXCOMPONENTOVERRIDEFLAG_NONE, nullptr, nullptr, nullptr, nullptr) == TX_RESULT_OK;
status &= txCreateContext(&ctx, TX_FALSE) == TX_RESULT_OK;
status &= register_state_snapshot(ctx, &state_snapshot);
status &= txRegisterConnectionStateChangedHandler(ctx, &state_change_ticket, state_change_handler, (TX_USERPARAM)this) == TX_RESULT_OK;
status &= txRegisterEventHandler(ctx, &event_cookie, event_handler, (TX_USERPARAM)this) == TX_RESULT_OK;
status &= txEnableConnection(ctx) == TX_RESULT_OK;
#if 0
// XXX check this
TX_CONNECTIONSTATE state;
status &= txGetConnectionState(ctx, &state) == TX_RESULT_OK;
status &= state == TX_CONNECTIONSTATE_CONNECTED || state == TX_CONNECTIONSTATE_TRYINGTOCONNECT;
#endif
if (!status)
return error(tr("Connection can't be established. device missing?"));
else
return status_ok();
}
bool tobii_eyex_tracker::center()
{
do_center = true;
return true;
}
settings::settings() : opts("tobii-eyex") {}
state::state() = default;
#include "tobii-eyex-dialog.hpp"
OPENTRACK_DECLARE_TRACKER(tobii_eyex_tracker, tobii_eyex_dialog, tobii_eyex_metadata)
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