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authorTao Bao <tbao@google.com>2017-08-03 02:11:04 +0200
committerTao Bao <tbao@google.com>2017-08-10 18:31:17 +0200
commit0470ceea381775b09eee931858c3320be88cc637 (patch)
tree7beb1970589bd76180f0342c3e8ef4323c8341f6 /wear_touch.cpp
parentMerge "update_verifier: verify blocks in parallel" (diff)
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Diffstat (limited to '')
-rw-r--r--wear_touch.cpp177
1 files changed, 0 insertions, 177 deletions
diff --git a/wear_touch.cpp b/wear_touch.cpp
deleted file mode 100644
index e2ab44d2d..000000000
--- a/wear_touch.cpp
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <dirent.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-
-#include <android-base/logging.h>
-#include <linux/input.h>
-
-#include "wear_touch.h"
-
-#define DEVICE_PATH "/dev/input"
-
-WearSwipeDetector::WearSwipeDetector(int low, int high, OnSwipeCallback callback, void* cookie):
- mLowThreshold(low),
- mHighThreshold(high),
- mCallback(callback),
- mCookie(cookie),
- mCurrentSlot(-1) {
- pthread_create(&mThread, NULL, touch_thread, this);
-}
-
-WearSwipeDetector::~WearSwipeDetector() {
-}
-
-void WearSwipeDetector::detect(int dx, int dy) {
- enum SwipeDirection direction;
-
- if (abs(dy) < mLowThreshold && abs(dx) > mHighThreshold) {
- direction = dx < 0 ? LEFT : RIGHT;
- } else if (abs(dx) < mLowThreshold && abs(dy) > mHighThreshold) {
- direction = dy < 0 ? UP : DOWN;
- } else {
- LOG(DEBUG) << "Ignore " << dx << " " << dy;
- return;
- }
-
- LOG(DEBUG) << "Swipe direction=" << direction;
- mCallback(mCookie, direction);
-}
-
-void WearSwipeDetector::process(struct input_event *event) {
- if (mCurrentSlot < 0) {
- mCallback(mCookie, UP);
- mCurrentSlot = 0;
- }
-
- if (event->type == EV_ABS) {
- if (event->code == ABS_MT_SLOT)
- mCurrentSlot = event->value;
-
- // Ignore other fingers
- if (mCurrentSlot > 0) {
- return;
- }
-
- switch (event->code) {
- case ABS_MT_POSITION_X:
- mX = event->value;
- mFingerDown = true;
- break;
-
- case ABS_MT_POSITION_Y:
- mY = event->value;
- mFingerDown = true;
- break;
-
- case ABS_MT_TRACKING_ID:
- if (event->value < 0)
- mFingerDown = false;
- break;
- }
- } else if (event->type == EV_SYN) {
- if (event->code == SYN_REPORT) {
- if (mFingerDown && !mSwiping) {
- mStartX = mX;
- mStartY = mY;
- mSwiping = true;
- } else if (!mFingerDown && mSwiping) {
- mSwiping = false;
- detect(mX - mStartX, mY - mStartY);
- }
- }
- }
-}
-
-void WearSwipeDetector::run() {
- int fd = findDevice(DEVICE_PATH);
- if (fd < 0) {
- LOG(ERROR) << "no input devices found";
- return;
- }
-
- struct input_event event;
- while (read(fd, &event, sizeof(event)) == sizeof(event)) {
- process(&event);
- }
-
- close(fd);
-}
-
-void* WearSwipeDetector::touch_thread(void* cookie) {
- (static_cast<WearSwipeDetector*>(cookie))->run();
- return NULL;
-}
-
-#define test_bit(bit, array) ((array)[(bit)/8] & (1<<((bit)%8)))
-
-int WearSwipeDetector::openDevice(const char *device) {
- int fd = open(device, O_RDONLY);
- if (fd < 0) {
- PLOG(ERROR) << "could not open " << device;
- return false;
- }
-
- char name[80];
- name[sizeof(name) - 1] = '\0';
- if (ioctl(fd, EVIOCGNAME(sizeof(name) - 1), &name) < 1) {
- PLOG(ERROR) << "could not get device name for " << device;
- name[0] = '\0';
- }
-
- uint8_t bits[512];
- memset(bits, 0, sizeof(bits));
- int ret = ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(bits)), bits);
- if (ret > 0) {
- if (test_bit(ABS_MT_POSITION_X, bits) && test_bit(ABS_MT_POSITION_Y, bits)) {
- LOG(DEBUG) << "Found " << device << " " << name;
- return fd;
- }
- }
-
- close(fd);
- return -1;
-}
-
-int WearSwipeDetector::findDevice(const char* path) {
- DIR* dir = opendir(path);
- if (dir == NULL) {
- PLOG(ERROR) << "Could not open directory " << path;
- return false;
- }
-
- struct dirent* entry;
- int ret = -1;
- while (ret < 0 && (entry = readdir(dir)) != NULL) {
- if (entry->d_name[0] == '.') continue;
-
- char device[PATH_MAX];
- device[PATH_MAX-1] = '\0';
- snprintf(device, PATH_MAX-1, "%s/%s", path, entry->d_name);
-
- ret = openDevice(device);
- }
-
- closedir(dir);
- return ret;
-}
-