int AllInputDevicesInit(void)
{PT_InputOpr ptTmp = g_ptInputOprHead;int iError = -1;while (ptTmp){if (0 == ptTmp->DeviceInit()){/* 创建子线程 */pthread_create(&ptTmp->t_TreadID, NULL,InputEventThreadFunction, ptTmp->GetInputEvent);/* 最后一个参数是给 InputEventThreadFunction用的*/iError = 0;}ptTmp = ptTmp->ptNext;}return iError;
}

/* 线程函数 */
static void* InputEventThreadFunction(void *pVoid)
{T_InputEvent tInputEvent;/* 定义函数指针 */int (*GetInputEvent)(PT_InputEvent ptInputEvent);/* 让这个函数指针指向 输入参数*/GetInputEvent = (int (*)(PT_InputEvent))pVoid;while(1){if(0 == GetInputEvent(&tInputEvent)){/* 有数据变化，唤醒主进程，把tInputEvent的值传给一个全局变量 *//* 访问临界资源前先获得互斥变量 */pthread_mutex_lock(&g_tmutex);/* 原子方法赋值 */g_tInputEvent = tInputEvent;/* 唤醒主线程 */pthread_cond_signal(&g_tcondvar);/* 释放互斥变量 */pthread_mutex_unlock(&g_tmutex);}}return NULL;}

int GetInputEvent(PT_InputEvent ptInputEvent)
{/* 休眠 */pthread_mutex_lock(&g_tmutex);/* 条件等待函数 */pthread_cond_wait(&g_tcondvar, &g_tmutex);/* 程序能够向下继续证明被唤醒啦 *//* 被唤醒之后返回数据 */*ptInputEvent = g_tInputEvent;pthread_mutex_unlock(&g_tmutex);return 0;
}

static int TouchScreenGetInputEvent(PT_InputEvent ptInputEvent)
{struct ts_sample tSamp;struct ts_sample tSampPressed;struct ts_sample tSampReleased;int iRet;int bStart = 0;int iDelta;static struct timeval tPreTime;while(1){iRet = ts_read(g_tTSDev, &tSamp, 1); /* 如果无数据则休眠 */if(1 == iRet){if ((tSamp.pressure > 0) && (bStart == 0)){tSampPressed = tSamp;bStart = 1;}if (tSamp.pressure <= 0){tSampReleased = tSamp;//bStart = 0;/* 处理数据 */if(!bStart){return -1;}else{iDelta = tSampReleased.x - tSampPressed.x;ptInputEvent->tTime = tSampReleased.tv;ptInputEvent->iType = INPUT_TYPE_TOUCHSCREEN;if (iDelta > giXres/5){/* 翻到上一页 */ ptInputEvent->iVal = INPUT_VALUE_UP;}else if (iDelta < 0 - giXres/5){/* 翻到下一页 */ptInputEvent->iVal = INPUT_VALUE_DOWN;}else{ptInputEvent->iVal = INPUT_VALUE_UNKNOWN;}return 0;}}    }else{return -1;}}return 0;
}