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-rw-r--r--minuitwrp/events.c640
1 files changed, 640 insertions, 0 deletions
diff --git a/minuitwrp/events.c b/minuitwrp/events.c
new file mode 100644
index 000000000..52c5a7d50
--- /dev/null
+++ b/minuitwrp/events.c
@@ -0,0 +1,640 @@
+/*
+ * Copyright (C) 2007 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 <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <sys/poll.h>
+#include <limits.h>
+
+#include <linux/input.h>
+
+#include "../common.h"
+
+#include "minui.h"
+
+//#define _EVENT_LOGGING
+
+#define MAX_DEVICES 16
+
+#define VIBRATOR_TIMEOUT_FILE "/sys/class/timed_output/vibrator/enable"
+#define VIBRATOR_TIME_MS 50
+
+#define SYN_REPORT 0x00
+#define SYN_CONFIG 0x01
+#define SYN_MT_REPORT 0x02
+
+#define ABS_MT_POSITION 0x2a /* Group a set of X and Y */
+#define ABS_MT_AMPLITUDE 0x2b /* Group a set of Z and W */
+#define ABS_MT_SLOT 0x2f
+#define ABS_MT_TOUCH_MAJOR 0x30
+#define ABS_MT_TOUCH_MINOR 0x31
+#define ABS_MT_WIDTH_MAJOR 0x32
+#define ABS_MT_WIDTH_MINOR 0x33
+#define ABS_MT_ORIENTATION 0x34
+#define ABS_MT_POSITION_X 0x35
+#define ABS_MT_POSITION_Y 0x36
+#define ABS_MT_TOOL_TYPE 0x37
+#define ABS_MT_BLOB_ID 0x38
+#define ABS_MT_TRACKING_ID 0x39
+#define ABS_MT_PRESSURE 0x3a
+#define ABS_MT_DISTANCE 0x3b
+
+enum {
+ DOWN_NOT,
+ DOWN_SENT,
+ DOWN_RELEASED,
+};
+
+struct virtualkey {
+ int scancode;
+ int centerx, centery;
+ int width, height;
+};
+
+struct position {
+ int x, y;
+ int synced;
+ struct input_absinfo xi, yi;
+};
+
+struct ev {
+ struct pollfd *fd;
+
+ struct virtualkey *vks;
+ int vk_count;
+
+ char deviceName[64];
+
+ int ignored;
+
+ struct position p, mt_p;
+ int down;
+};
+
+static struct pollfd ev_fds[MAX_DEVICES];
+static struct ev evs[MAX_DEVICES];
+static unsigned ev_count = 0;
+
+static inline int ABS(int x) {
+ return x<0?-x:x;
+}
+
+int vibrate(int timeout_ms)
+{
+ char str[20];
+ int fd;
+ int ret;
+
+ fd = open(VIBRATOR_TIMEOUT_FILE, O_WRONLY);
+ if (fd < 0)
+ return -1;
+
+ ret = snprintf(str, sizeof(str), "%d", timeout_ms);
+ ret = write(fd, str, ret);
+ close(fd);
+
+ if (ret < 0)
+ return -1;
+
+ return 0;
+}
+
+/* Returns empty tokens */
+static char *vk_strtok_r(char *str, const char *delim, char **save_str)
+{
+ if(!str)
+ {
+ if(!*save_str)
+ return NULL;
+
+ str = (*save_str) + 1;
+ }
+ *save_str = strpbrk(str, delim);
+
+ if (*save_str)
+ **save_str = '\0';
+
+ return str;
+}
+
+static int vk_init(struct ev *e)
+{
+ char vk_path[PATH_MAX] = "/sys/board_properties/virtualkeys.";
+ char vks[2048], *ts = NULL;
+ ssize_t len;
+ int vk_fd;
+ int i;
+
+ e->vk_count = 0;
+
+ len = strlen(vk_path);
+ len = ioctl(e->fd->fd, EVIOCGNAME(sizeof(e->deviceName)), e->deviceName);
+ if (len <= 0)
+ {
+ LOGE("Unable to query event object.\n");
+ return -1;
+ }
+#ifdef _EVENT_LOGGING
+ LOGI("Event object: %s\n", e->deviceName);
+#endif
+
+ // Blacklist these "input" devices
+ if (strcmp(e->deviceName, "bma250") == 0)
+ {
+ e->ignored = 1;
+ }
+
+ strcat(vk_path, e->deviceName);
+
+ // Some devices split the keys from the touchscreen
+ e->vk_count = 0;
+ vk_fd = open(vk_path, O_RDONLY);
+ if (vk_fd >= 0)
+ {
+ len = read(vk_fd, vks, sizeof(vks)-1);
+ close(vk_fd);
+ if (len <= 0)
+ return -1;
+
+ vks[len] = '\0';
+
+ /* Parse a line like:
+ keytype:keycode:centerx:centery:width:height:keytype2:keycode2:centerx2:...
+ */
+ for (ts = vks, e->vk_count = 1; *ts; ++ts) {
+ if (*ts == ':')
+ ++e->vk_count;
+ }
+
+ if (e->vk_count % 6) {
+ LOGW("minui: %s is %d %% 6\n", vk_path, e->vk_count % 6);
+ }
+ e->vk_count /= 6;
+ if (e->vk_count <= 0)
+ return -1;
+
+ e->down = DOWN_NOT;
+ }
+
+ ioctl(e->fd->fd, EVIOCGABS(ABS_X), &e->p.xi);
+ ioctl(e->fd->fd, EVIOCGABS(ABS_Y), &e->p.yi);
+ e->p.synced = 0;
+#ifdef _EVENT_LOGGING
+ LOGI("EV: ST minX: %d maxX: %d minY: %d maxY: %d\n", e->p.xi.minimum, e->p.xi.maximum, e->p.yi.minimum, e->p.yi.maximum);
+#endif
+
+ ioctl(e->fd->fd, EVIOCGABS(ABS_MT_POSITION_X), &e->mt_p.xi);
+ ioctl(e->fd->fd, EVIOCGABS(ABS_MT_POSITION_Y), &e->mt_p.yi);
+ e->mt_p.synced = 0;
+#ifdef _EVENT_LOGGING
+ LOGI("EV: MT minX: %d maxX: %d minY: %d maxY: %d\n", e->mt_p.xi.minimum, e->mt_p.xi.maximum, e->mt_p.yi.minimum, e->mt_p.yi.maximum);
+#endif
+
+ e->vks = malloc(sizeof(*e->vks) * e->vk_count);
+
+ for (i = 0; i < e->vk_count; ++i) {
+ char *token[6];
+ int j;
+
+ for (j = 0; j < 6; ++j) {
+ token[j] = vk_strtok_r((i||j)?NULL:vks, ":", &ts);
+ }
+
+ if (strcmp(token[0], "0x01") != 0) {
+ /* Java does string compare, so we do too. */
+ LOGW("minui: %s: ignoring unknown virtual key type %s\n", vk_path, token[0]);
+ continue;
+ }
+
+ e->vks[i].scancode = strtol(token[1], NULL, 0);
+ e->vks[i].centerx = strtol(token[2], NULL, 0);
+ e->vks[i].centery = strtol(token[3], NULL, 0);
+ e->vks[i].width = strtol(token[4], NULL, 0);
+ e->vks[i].height = strtol(token[5], NULL, 0);
+ }
+
+ return 0;
+}
+
+int ev_init(void)
+{
+ DIR *dir;
+ struct dirent *de;
+ int fd;
+
+ dir = opendir("/dev/input");
+ if(dir != 0) {
+ while((de = readdir(dir))) {
+// fprintf(stderr,"/dev/input/%s\n", de->d_name);
+ if(strncmp(de->d_name,"event",5)) continue;
+ fd = openat(dirfd(dir), de->d_name, O_RDONLY);
+ if(fd < 0) continue;
+
+ ev_fds[ev_count].fd = fd;
+ ev_fds[ev_count].events = POLLIN;
+ evs[ev_count].fd = &ev_fds[ev_count];
+
+ /* Load virtualkeys if there are any */
+ vk_init(&evs[ev_count]);
+
+ ev_count++;
+ if(ev_count == MAX_DEVICES) break;
+ }
+ }
+
+ return 0;
+}
+
+void ev_exit(void)
+{
+ while (ev_count-- > 0) {
+ if (evs[ev_count].vk_count) {
+ free(evs[ev_count].vks);
+ evs[ev_count].vk_count = 0;
+ }
+ close(ev_fds[ev_count].fd);
+ }
+}
+
+static int vk_inside_display(__s32 value, struct input_absinfo *info, int screen_size)
+{
+ int screen_pos;
+
+ if (info->minimum == info->maximum)
+ return 0;
+
+ screen_pos = (value - info->minimum) * (screen_size - 1) / (info->maximum - info->minimum);
+ return (screen_pos >= 0 && screen_pos < screen_size);
+}
+
+static int vk_tp_to_screen(struct position *p, int *x, int *y)
+{
+ if (p->xi.minimum == p->xi.maximum || p->yi.minimum == p->yi.maximum)
+ {
+ // In this case, we assume the screen dimensions are the same.
+ *x = p->x;
+ *y = p->y;
+ return 0;
+ }
+
+#ifdef _EVENT_LOGGING
+ LOGI("EV: p->x=%d x-range=%d,%d fb-width=%d\n", p->x, p->xi.minimum, p->xi.maximum, gr_fb_width());
+#endif
+
+#ifndef RECOVERY_TOUCHSCREEN_SWAP_XY
+ int fb_width = gr_fb_width();
+ int fb_height = gr_fb_height();
+#else
+ // We need to swap the scaling sizes, too
+ int fb_width = gr_fb_height();
+ int fb_height = gr_fb_width();
+#endif
+
+ *x = (p->x - p->xi.minimum) * (fb_width - 1) / (p->xi.maximum - p->xi.minimum);
+ *y = (p->y - p->yi.minimum) * (fb_height - 1) / (p->yi.maximum - p->yi.minimum);
+
+ if (*x >= 0 && *x < fb_width &&
+ *y >= 0 && *y < fb_height)
+ {
+ return 0;
+ }
+
+ return 1;
+}
+
+/* Translate a virtual key in to a real key event, if needed */
+/* Returns non-zero when the event should be consumed */
+static int vk_modify(struct ev *e, struct input_event *ev)
+{
+ static int downX = -1, downY = -1;
+ static int discard = 0;
+ static int lastWasSynReport = 0;
+ static int touchReleaseOnNextSynReport = 0;
+ int i;
+ int x, y;
+
+ // This is used to ditch useless event handlers, like an accelerometer
+ if (e->ignored) return 1;
+
+ if (ev->type == EV_REL && ev->code == REL_Z)
+ {
+ // This appears to be an accelerometer or another strange input device. It's not the touchscreen.
+#ifdef _EVENT_LOGGING
+ LOGI("EV: Device disabled due to non-touchscreen messages.\n");
+#endif
+ e->ignored = 1;
+ return 1;
+ }
+
+#ifdef _EVENT_LOGGING
+ LOGI("EV: %s => type: %x code: %x value: %d\n", e->deviceName, ev->type, ev->code, ev->value);
+#endif
+
+ // Handle keyboard events, value of 1 indicates key down, 0 indicates key up
+ if (ev->type == EV_KEY) {
+ return 0;
+ }
+
+ if (ev->type == EV_ABS) {
+ switch (ev->code) {
+
+ case ABS_X: //00
+ e->p.synced |= 0x01;
+ e->p.x = ev->value;
+#ifdef _EVENT_LOGGING
+ LOGI("EV: %s => EV_ABS ABS_X %d\n", e->deviceName, ev->value);
+#endif
+ break;
+
+ case ABS_Y: //01
+ e->p.synced |= 0x02;
+ e->p.y = ev->value;
+#ifdef _EVENT_LOGGING
+ LOGI("EV: %s => EV_ABS ABS_Y %d\n", e->deviceName, ev->value);
+#endif
+ break;
+
+ case ABS_MT_POSITION: //2a
+ e->mt_p.synced = 0x03;
+ if (ev->value == (1 << 31))
+ {
+ e->mt_p.x = 0;
+ e->mt_p.y = 0;
+ lastWasSynReport = 1;
+ }
+ else
+ {
+ lastWasSynReport = 0;
+ e->mt_p.x = (ev->value & 0x7FFF0000) >> 16;
+ e->mt_p.y = (ev->value & 0xFFFF);
+ }
+ break;
+
+ case ABS_MT_TOUCH_MAJOR: //30
+ if (ev->value == 0)
+ {
+ // We're in a touch release, although some devices will still send positions as well
+ e->mt_p.x = 0;
+ e->mt_p.y = 0;
+ touchReleaseOnNextSynReport = 1;
+ }
+#ifdef _EVENT_LOGGING
+ LOGI("EV: %s => EV_ABS ABS_MT_TOUCH_MAJOR %d\n", e->deviceName, ev->value);
+#endif
+ break;
+
+ case ABS_MT_PRESSURE: //3a
+ if (ev->value == 0)
+ {
+ // We're in a touch release, although some devices will still send positions as well
+ e->mt_p.x = 0;
+ e->mt_p.y = 0;
+ touchReleaseOnNextSynReport = 1;
+ }
+#ifdef _EVENT_LOGGING
+ LOGI("EV: %s => EV_ABS ABS_MT_PRESSURE %d\n", e->deviceName, ev->value);
+#endif
+ break;
+
+ case ABS_MT_POSITION_X: //35
+ e->mt_p.synced |= 0x01;
+ e->mt_p.x = ev->value;
+#ifdef _EVENT_LOGGING
+ LOGI("EV: %s => EV_ABS ABS_MT_POSITION_X %d\n", e->deviceName, ev->value);
+#endif
+ break;
+
+ case ABS_MT_POSITION_Y: //36
+ e->mt_p.synced |= 0x02;
+ e->mt_p.y = ev->value;
+#ifdef _EVENT_LOGGING
+ LOGI("EV: %s => EV_ABS ABS_MT_POSITION_Y %d\n", e->deviceName, ev->value);
+#endif
+ break;
+
+#ifdef _EVENT_LOGGING
+ // All of these items are strictly for logging purposes only. Return 1 because they don't need to be handled.
+ case ABS_MT_TOUCH_MINOR: //31
+ LOGI("EV: %s => EV_ABS ABS_MT_TOUCH_MINOR %d\n", e->deviceName, ev->value);
+ return 1;
+ break;
+
+ case ABS_MT_WIDTH_MAJOR: //32
+ LOGI("EV: %s => EV_ABS ABS_MT_WIDTH_MAJOR %d\n", e->deviceName, ev->value);
+ return 1;
+ break;
+
+ case ABS_MT_WIDTH_MINOR: //33
+ LOGI("EV: %s => EV_ABS ABS_MT_WIDTH_MINOR %d\n", e->deviceName, ev->value);
+ return 1;
+ break;
+
+ case ABS_MT_ORIENTATION: //34
+ LOGI("EV: %s => EV_ABS ABS_MT_ORIENTATION %d\n", e->deviceName, ev->value);
+ return 1;
+ break;
+
+ case ABS_MT_TOOL_TYPE: //37
+ LOGI("EV: %s => EV_ABS ABS_MT_TOOL_TYPE %d\n", e->deviceName, ev->value);
+ return 1;
+ break;
+
+ case ABS_MT_BLOB_ID: //38
+ LOGI("EV: %s => EV_ABS ABS_MT_BLOB_ID %d\n", e->deviceName, ev->value);
+ return 1;
+ break;
+
+ case ABS_MT_TRACKING_ID: //39
+ LOGI("EV: %s => EV_ABS ABS_MT_TRACKING_ID %d\n", e->deviceName, ev->value);
+ return 1;
+ break;
+
+ case ABS_MT_DISTANCE: //3b
+ LOGI("EV: %s => EV_ABS ABS_MT_DISTANCE %d\n", e->deviceName, ev->value);
+ return 1;
+ break;
+#endif
+
+ default:
+ // This is an unhandled message, just skip it
+ return 1;
+ }
+
+ if (ev->code != ABS_MT_POSITION)
+ {
+ lastWasSynReport = 0;
+ return 1;
+ }
+ }
+
+ // Check if we should ignore the message
+ if (ev->code != ABS_MT_POSITION && (ev->type != EV_SYN || (ev->code != SYN_REPORT && ev->code != SYN_MT_REPORT)))
+ {
+ lastWasSynReport = 0;
+ return 0;
+ }
+
+#ifdef _EVENT_LOGGING
+ if (ev->type == EV_SYN && ev->code == SYN_REPORT) LOGI("EV: %s => EV_SYN SYN_REPORT\n", e->deviceName);
+ if (ev->type == EV_SYN && ev->code == SYN_MT_REPORT) LOGI("EV: %s => EV_SYN SYN_MT_REPORT\n", e->deviceName);
+#endif
+
+ // Discard the MT versions
+ if (ev->code == SYN_MT_REPORT) return 0;
+
+ if (lastWasSynReport == 1 || touchReleaseOnNextSynReport == 1)
+ {
+ // Reset the value
+ touchReleaseOnNextSynReport = 0;
+
+ // We are a finger-up state
+ if (!discard)
+ {
+ // Report the key up
+ ev->type = EV_ABS;
+ ev->code = 0;
+ ev->value = (downX << 16) | downY;
+ }
+ downX = -1;
+ downY = -1;
+ if (discard)
+ {
+ discard = 0;
+ return 1;
+ }
+ return 0;
+ }
+ lastWasSynReport = 1;
+
+ // Retrieve where the x,y position is
+ if (e->p.synced & 0x03)
+ {
+ vk_tp_to_screen(&e->p, &x, &y);
+ }
+ else if (e->mt_p.synced & 0x03)
+ {
+ vk_tp_to_screen(&e->mt_p, &x, &y);
+ }
+ else
+ {
+ // We don't have useful information to convey
+ return 1;
+ }
+
+#ifdef RECOVERY_TOUCHSCREEN_SWAP_XY
+ x ^= y;
+ y ^= x;
+ x ^= y;
+#endif
+#ifdef RECOVERY_TOUCHSCREEN_FLIP_X
+ x = gr_fb_width() - x;
+#endif
+#ifdef RECOVERY_TOUCHSCREEN_FLIP_Y
+ y = gr_fb_height() - y;
+#endif
+
+#ifdef _EVENT_LOGGING
+ LOGI("EV: x: %d y: %d\n", x, y);
+#endif
+
+ // Clear the current sync states
+ e->p.synced = e->mt_p.synced = 0;
+
+ // If we have nothing useful to report, skip it
+ if (x == -1 || y == -1) return 1;
+
+ // On first touch, see if we're at a virtual key
+ if (downX == -1)
+ {
+ // Attempt mapping to virtual key
+ for (i = 0; i < e->vk_count; ++i)
+ {
+ int xd = ABS(e->vks[i].centerx - x);
+ int yd = ABS(e->vks[i].centery - y);
+
+ if (xd < e->vks[i].width/2 && yd < e->vks[i].height/2)
+ {
+ ev->type = EV_KEY;
+ ev->code = e->vks[i].scancode;
+ ev->value = 1;
+
+ vibrate(VIBRATOR_TIME_MS);
+
+ // Mark that all further movement until lift is discard,
+ // and make sure we don't come back into this area
+ discard = 1;
+ downX = 0;
+ return 0;
+ }
+ }
+ }
+
+ // If we were originally a button press, discard this event
+ if (discard)
+ {
+ return 1;
+ }
+
+ // Record where we started the touch for deciding if this is a key or a scroll
+ downX = x;
+ downY = y;
+
+ ev->type = EV_ABS;
+ ev->code = 1;
+ ev->value = (x << 16) | y;
+ return 0;
+}
+
+int ev_get(struct input_event *ev, unsigned dont_wait)
+{
+ int r;
+ unsigned n;
+
+ do {
+ r = poll(ev_fds, ev_count, dont_wait ? 0 : -1);
+
+ if(r > 0) {
+ for(n = 0; n < ev_count; n++) {
+ if(ev_fds[n].revents & POLLIN) {
+ r = read(ev_fds[n].fd, ev, sizeof(*ev));
+ if(r == sizeof(*ev)) {
+ if (!vk_modify(&evs[n], ev))
+ return 0;
+ }
+ }
+ }
+ }
+ } while(dont_wait == 0);
+
+ return -1;
+}
+
+int ev_wait(int timeout)
+{
+ return -1;
+}
+
+void ev_dispatch(void)
+{
+ return;
+}
+
+int ev_get_input(int fd, short revents, struct input_event *ev)
+{
+ return -1;
+}
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