| リビジョン | 4749fb4cfb27117729455347ae7d10d8046a8717 (tree) |
|---|---|
| 日時 | 2011-06-27 02:04:25 |
| 作者 | Jim Huang <jserv@0xla...> |
| コミッター | Chih-Wei Huang |
Added fake touchscreen daemon to make builtin apk work
Several Android builtin packages would pick up the system resources
about touchscreen. If there is no touchscreen, the ones suffixing
with '-notouch' would be taken. However, by default, resource layout
doesn't come with '-notouch', and Beagleboard has no touchscreen on
board physically. Thus, Android core will crash due to lacking of
proper resources.
Our solution is to write a dedicated daemon to register userspace
input device as a fake touchscreen device. EventHub would regard
it as one of the input source, and no Android packages would complain.
(cherry picked from commit 641356fa32226baa8beb12d54160103063c7c8d4)
Signed-off-by: Tick Chen <tick@0xlab.org>
[faketsd] Run fake touch screen driver for res
DO NOT MERGE: Demo purpose only.
Running faketsd before system runs and Android will think the system
having resource of touchscreen, and will try to access resource of
fingers.
faketsd/Android.mk (diff)
faketsd/fake-ts.c (diff)| @@ -0,0 +1,9 @@ | ||
| 1 | +LOCAL_PATH := $(call my-dir) | |
| 2 | +include $(CLEAR_VARS) | |
| 3 | + | |
| 4 | +LOCAL_SRC_FILES := fake-ts.c | |
| 5 | + | |
| 6 | +LOCAL_MODULE := faketsd | |
| 7 | +LOCAL_MODULE_TAGS := optional | |
| 8 | + | |
| 9 | +include $(BUILD_EXECUTABLE) |
| @@ -0,0 +1,76 @@ | ||
| 1 | +/* ------------------------------------------------------------------ | |
| 2 | + * Copyright (C) 2009 0xlab.org - http://0xlab.org/ | |
| 3 | + * | |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 | + * you may not use this file except in compliance with the License. | |
| 6 | + * You may obtain a copy of the License at | |
| 7 | + * | |
| 8 | + * http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 | + * | |
| 10 | + * Unless required by applicable law or agreed to in writing, software | |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either | |
| 13 | + * express or implied. | |
| 14 | + * See the License for the specific language governing permissions | |
| 15 | + * and limitations under the License. | |
| 16 | + * ------------------------------------------------------------------- | |
| 17 | + */ | |
| 18 | + | |
| 19 | +#include <stdio.h> | |
| 20 | +#include <fcntl.h> | |
| 21 | +#include <unistd.h> | |
| 22 | +#include <string.h> | |
| 23 | + | |
| 24 | +#include <linux/uinput.h> | |
| 25 | + | |
| 26 | +/* look up source file system/core/init/devices.c for exact node */ | |
| 27 | +#define UINPUT_DEV "/dev/uinput" | |
| 28 | + | |
| 29 | +#define DEV_NAME "Fake Touchscreen" | |
| 30 | + | |
| 31 | +static int uinput_fd = 0; | |
| 32 | + | |
| 33 | +static void uinput_touch_init(const char* uinput_dev, | |
| 34 | + const char* dev_name) | |
| 35 | +{ | |
| 36 | + struct uinput_user_dev dev; | |
| 37 | + | |
| 38 | + uinput_fd = open(uinput_dev, O_WRONLY); | |
| 39 | + if (uinput_fd <= 0) { | |
| 40 | + perror("Error opening uinput device.\n"); | |
| 41 | + return; | |
| 42 | + } | |
| 43 | + memset(&dev, 0, sizeof(dev)); | |
| 44 | + strcpy(dev.name, dev_name); | |
| 45 | + write(uinput_fd, &dev, sizeof(dev)); | |
| 46 | + | |
| 47 | + /* touch screen event */ | |
| 48 | + ioctl(uinput_fd, UI_SET_EVBIT, EV_ABS); | |
| 49 | + ioctl(uinput_fd, UI_SET_ABSBIT, ABS_X); | |
| 50 | + ioctl(uinput_fd, UI_SET_ABSBIT, ABS_Y); | |
| 51 | + ioctl(uinput_fd, UI_SET_EVBIT, EV_KEY); | |
| 52 | + ioctl(uinput_fd, UI_SET_KEYBIT, BTN_TOUCH); | |
| 53 | + | |
| 54 | + /* register userspace input device */ | |
| 55 | + ioctl(uinput_fd, UI_DEV_CREATE, 0); | |
| 56 | +} | |
| 57 | + | |
| 58 | +static void uinput_touch_deinit() | |
| 59 | +{ | |
| 60 | + if (uinput_fd > 0) { | |
| 61 | + close(uinput_fd); | |
| 62 | + } | |
| 63 | +} | |
| 64 | + | |
| 65 | +int main(int argc, char* argv[]) | |
| 66 | +{ | |
| 67 | + uinput_touch_init(UINPUT_DEV, DEV_NAME); | |
| 68 | + | |
| 69 | + while (1) { | |
| 70 | + sleep(60); | |
| 71 | + } | |
| 72 | + | |
| 73 | + uinput_touch_deinit(); | |
| 74 | + | |
| 75 | + return 0; | |
| 76 | +} |
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