diff options
Diffstat (limited to 'Tobii-EyeX/samples/MinimalGazeDataStream/MinimalGazeDataStream.c')
| -rwxr-xr-x | Tobii-EyeX/samples/MinimalGazeDataStream/MinimalGazeDataStream.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/Tobii-EyeX/samples/MinimalGazeDataStream/MinimalGazeDataStream.c b/Tobii-EyeX/samples/MinimalGazeDataStream/MinimalGazeDataStream.c deleted file mode 100755 index 20b3eab..0000000 --- a/Tobii-EyeX/samples/MinimalGazeDataStream/MinimalGazeDataStream.c +++ /dev/null @@ -1,171 +0,0 @@ -/*
- * This is an example that demonstrates how to connect to the EyeX Engine and subscribe to the lightly filtered gaze data stream.
- *
- * Copyright 2013-2014 Tobii Technology AB. All rights reserved.
- */
-
-#include <Windows.h>
-#include <stdio.h>
-#include <conio.h>
-#include <assert.h>
-#include "eyex/EyeX.h"
-
-#pragma comment (lib, "Tobii.EyeX.Client.lib")
-
-// ID of the global interactor that provides our data stream; must be unique within the application.
-static const TX_STRING InteractorId = "Twilight Sparkle";
-
-// global variables
-static TX_HANDLE g_hGlobalInteractorSnapshot = TX_EMPTY_HANDLE;
-
-/*
- * Initializes g_hGlobalInteractorSnapshot with an interactor that has the Gaze Point behavior.
- */
-BOOL InitializeGlobalInteractorSnapshot(TX_CONTEXTHANDLE hContext)
-{
- TX_HANDLE hInteractor = TX_EMPTY_HANDLE;
- TX_GAZEPOINTDATAPARAMS params = { TX_GAZEPOINTDATAMODE_LIGHTLYFILTERED };
- BOOL success;
-
- success = txCreateGlobalInteractorSnapshot(
- hContext,
- InteractorId,
- &g_hGlobalInteractorSnapshot,
- &hInteractor) == TX_RESULT_OK;
- success &= txCreateGazePointDataBehavior(hInteractor, ¶ms) == TX_RESULT_OK;
-
- txReleaseObject(&hInteractor);
-
- return success;
-}
-
-/*
- * Callback function invoked when a snapshot has been committed.
- */
-void TX_CALLCONVENTION OnSnapshotCommitted(TX_CONSTHANDLE hAsyncData, TX_USERPARAM param)
-{
- // check the result code using an assertion.
- // this will catch validation errors and runtime errors in debug builds. in release builds it won't do anything.
-
- TX_RESULT result = TX_RESULT_UNKNOWN;
- txGetAsyncDataResultCode(hAsyncData, &result);
- assert(result == TX_RESULT_OK || result == TX_RESULT_CANCELLED);
-}
-
-/*
- * Callback function invoked when the status of the connection to the EyeX Engine has changed.
- */
-void TX_CALLCONVENTION OnEngineConnectionStateChanged(TX_CONNECTIONSTATE connectionState, TX_USERPARAM userParam)
-{
- switch (connectionState) {
- case TX_CONNECTIONSTATE_CONNECTED: {
- BOOL success;
- printf("The connection state is now CONNECTED (We are connected to the EyeX Engine)\n");
- // commit the snapshot with the global interactor as soon as the connection to the engine is established.
- // (it cannot be done earlier because committing means "send to the engine".)
- success = txCommitSnapshotAsync(g_hGlobalInteractorSnapshot, OnSnapshotCommitted, NULL) == TX_RESULT_OK;
- if (!success) {
- printf("Failed to initialize the data stream.\n");
- }
- else {
- printf("Waiting for gaze data to start streaming...\n");
- }
- }
- break;
-
- case TX_CONNECTIONSTATE_DISCONNECTED:
- printf("The connection state is now DISCONNECTED (We are disconnected from the EyeX Engine)\n");
- break;
-
- case TX_CONNECTIONSTATE_TRYINGTOCONNECT:
- printf("The connection state is now TRYINGTOCONNECT (We are trying to connect to the EyeX Engine)\n");
- break;
-
- case TX_CONNECTIONSTATE_SERVERVERSIONTOOLOW:
- printf("The connection state is now SERVER_VERSION_TOO_LOW: this application requires a more recent version of the EyeX Engine to run.\n");
- break;
-
- case TX_CONNECTIONSTATE_SERVERVERSIONTOOHIGH:
- printf("The connection state is now SERVER_VERSION_TOO_HIGH: this application requires an older version of the EyeX Engine to run.\n");
- break;
- }
-}
-
-/*
- * Handles an event from the Gaze Point data stream.
- */
-void OnGazeDataEvent(TX_HANDLE hGazeDataBehavior)
-{
- TX_GAZEPOINTDATAEVENTPARAMS eventParams;
- if (txGetGazePointDataEventParams(hGazeDataBehavior, &eventParams) == TX_RESULT_OK) {
- printf("Gaze Data: (%.1f, %.1f) timestamp %.0f ms\n", eventParams.X, eventParams.Y, eventParams.Timestamp);
- } else {
- printf("Failed to interpret gaze data event packet.\n");
- }
-}
-
-/*
- * Callback function invoked when an event has been received from the EyeX Engine.
- */
-void TX_CALLCONVENTION HandleEvent(TX_CONSTHANDLE hAsyncData, TX_USERPARAM userParam)
-{
- TX_HANDLE hEvent = TX_EMPTY_HANDLE;
- TX_HANDLE hBehavior = TX_EMPTY_HANDLE;
-
- txGetAsyncDataContent(hAsyncData, &hEvent);
-
- // NOTE. Uncomment the following line of code to view the event object. The same function can be used with any interaction object.
- //OutputDebugStringA(txDebugObject(hEvent));
-
- if (txGetEventBehavior(hEvent, &hBehavior, TX_BEHAVIORTYPE_GAZEPOINTDATA) == TX_RESULT_OK) {
- OnGazeDataEvent(hBehavior);
- txReleaseObject(&hBehavior);
- }
-
- // NOTE since this is a very simple application with a single interactor and a single data stream,
- // our event handling code can be very simple too. A more complex application would typically have to
- // check for multiple behaviors and route events based on interactor IDs.
-
- txReleaseObject(&hEvent);
-}
-
-/*
- * Application entry point.
- */
-int main(int argc, char* argv[])
-{
- TX_CONTEXTHANDLE hContext = TX_EMPTY_HANDLE;
- TX_TICKET hConnectionStateChangedTicket = TX_INVALID_TICKET;
- TX_TICKET hEventHandlerTicket = TX_INVALID_TICKET;
- BOOL success;
-
- // initialize and enable the context that is our link to the EyeX Engine.
- success = txInitializeEyeX(TX_EYEXCOMPONENTOVERRIDEFLAG_NONE, NULL, NULL, NULL, NULL) == TX_RESULT_OK;
- success &= txCreateContext(&hContext, TX_FALSE) == TX_RESULT_OK;
- success &= InitializeGlobalInteractorSnapshot(hContext);
- success &= txRegisterConnectionStateChangedHandler(hContext, &hConnectionStateChangedTicket, OnEngineConnectionStateChanged, NULL) == TX_RESULT_OK;
- success &= txRegisterEventHandler(hContext, &hEventHandlerTicket, HandleEvent, NULL) == TX_RESULT_OK;
- success &= txEnableConnection(hContext) == TX_RESULT_OK;
-
- // let the events flow until a key is pressed.
- if (success) {
- printf("Initialization was successful.\n");
- } else {
- printf("Initialization failed.\n");
- }
- printf("Press any key to exit...\n");
- _getch();
- printf("Exiting.\n");
-
- // disable and delete the context.
- txDisableConnection(hContext);
- txReleaseObject(&g_hGlobalInteractorSnapshot);
- success = txShutdownContext(hContext, TX_CLEANUPTIMEOUT_DEFAULT, TX_FALSE) == TX_RESULT_OK;
- success &= txReleaseContext(&hContext) == TX_RESULT_OK;
- success &= txUninitializeEyeX() == TX_RESULT_OK;
- if (!success) {
- printf("EyeX could not be shut down cleanly. Did you remember to release all handles?\n");
- }
-
- return 0;
-}
|