Move librecovery_ui to a sub-directory

This helps to expose librecovery_ui for device specific RecoveryUi.

Bug: 76436783
Test: mma, unit tests pass
Change-Id: Ic6c3d301d5833e4a592e6ea9d9d059bc4e4919be

1 files changed, 0 insertions, 599 deletions

diff --git a/ui.cpp b/ui.cpp
deleted file mode 100644
index c12a11b3..00000000
--- a/ui.cpp
+++ /dev/null
@@ -1,599 +0,0 @@
-/*
- * Copyright (C) 2011 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 "ui.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <time.h>
-#include <unistd.h>
-
-#include <chrono>
-#include <functional>
-#include <string>
-#include <thread>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/parseint.h>
-#include <android-base/properties.h>
-#include <android-base/strings.h>
-
-#include "minui/minui.h"
-#include "otautil/sysutil.h"
-#include "roots.h"
-
-using namespace std::chrono_literals;
-
-constexpr int UI_WAIT_KEY_TIMEOUT_SEC = 120;
-constexpr const char* BRIGHTNESS_FILE = "/sys/class/leds/lcd-backlight/brightness";
-constexpr const char* MAX_BRIGHTNESS_FILE = "/sys/class/leds/lcd-backlight/max_brightness";
-constexpr const char* BRIGHTNESS_FILE_SDM = "/sys/class/backlight/panel0-backlight/brightness";
-constexpr const char* MAX_BRIGHTNESS_FILE_SDM =
-    "/sys/class/backlight/panel0-backlight/max_brightness";
-
-constexpr int kDefaultTouchLowThreshold = 50;
-constexpr int kDefaultTouchHighThreshold = 90;
-
-RecoveryUI::RecoveryUI()
-    : brightness_normal_(50),
-      brightness_dimmed_(25),
-      brightness_file_(BRIGHTNESS_FILE),
-      max_brightness_file_(MAX_BRIGHTNESS_FILE),
-      touch_screen_allowed_(false),
-      fastbootd_logo_enabled_(false),
-      touch_low_threshold_(android::base::GetIntProperty("ro.recovery.ui.touch_low_threshold",
-                                                         kDefaultTouchLowThreshold)),
-      touch_high_threshold_(android::base::GetIntProperty("ro.recovery.ui.touch_high_threshold",
-                                                          kDefaultTouchHighThreshold)),
-      key_interrupted_(false),
-      key_queue_len(0),
-      key_last_down(-1),
-      key_long_press(false),
-      key_down_count(0),
-      enable_reboot(true),
-      consecutive_power_keys(0),
-      last_key(-1),
-      has_power_key(false),
-      has_up_key(false),
-      has_down_key(false),
-      has_touch_screen(false),
-      touch_slot_(0),
-      is_bootreason_recovery_ui_(false),
-      screensaver_state_(ScreensaverState::DISABLED) {
-  memset(key_pressed, 0, sizeof(key_pressed));
-}
-
-RecoveryUI::~RecoveryUI() {
-  ev_exit();
-  input_thread_stopped_ = true;
-  if (input_thread_.joinable()) {
-    input_thread_.join();
-  }
-}
-
-void RecoveryUI::OnKeyDetected(int key_code) {
-  if (key_code == KEY_POWER) {
-    has_power_key = true;
-  } else if (key_code == KEY_DOWN || key_code == KEY_VOLUMEDOWN) {
-    has_down_key = true;
-  } else if (key_code == KEY_UP || key_code == KEY_VOLUMEUP) {
-    has_up_key = true;
-  } else if (key_code == ABS_MT_POSITION_X || key_code == ABS_MT_POSITION_Y) {
-    has_touch_screen = true;
-  }
-}
-
-bool RecoveryUI::InitScreensaver() {
-  // Disabled.
-  if (brightness_normal_ == 0 || brightness_dimmed_ > brightness_normal_) {
-    return false;
-  }
-  if (access(brightness_file_.c_str(), R_OK | W_OK)) {
-    brightness_file_ = BRIGHTNESS_FILE_SDM;
-  }
-  if (access(max_brightness_file_.c_str(), R_OK)) {
-    max_brightness_file_ = MAX_BRIGHTNESS_FILE_SDM;
-  }
-  // Set the initial brightness level based on the max brightness. Note that reading the initial
-  // value from BRIGHTNESS_FILE doesn't give the actual brightness value (bullhead, sailfish), so
-  // we don't have a good way to query the default value.
-  std::string content;
-  if (!android::base::ReadFileToString(max_brightness_file_, &content)) {
-    PLOG(WARNING) << "Failed to read max brightness";
-    return false;
-  }
-
-  unsigned int max_value;
-  if (!android::base::ParseUint(android::base::Trim(content), &max_value)) {
-    LOG(WARNING) << "Failed to parse max brightness: " << content;
-    return false;
-  }
-
-  brightness_normal_value_ = max_value * brightness_normal_ / 100.0;
-  brightness_dimmed_value_ = max_value * brightness_dimmed_ / 100.0;
-  if (!android::base::WriteStringToFile(std::to_string(brightness_normal_value_),
-                                        brightness_file_)) {
-    PLOG(WARNING) << "Failed to set brightness";
-    return false;
-  }
-
-  LOG(INFO) << "Brightness: " << brightness_normal_value_ << " (" << brightness_normal_ << "%)";
-  screensaver_state_ = ScreensaverState::NORMAL;
-  return true;
-}
-
-bool RecoveryUI::Init(const std::string& /* locale */) {
-  ev_init(std::bind(&RecoveryUI::OnInputEvent, this, std::placeholders::_1, std::placeholders::_2),
-          touch_screen_allowed_);
-
-  ev_iterate_available_keys(std::bind(&RecoveryUI::OnKeyDetected, this, std::placeholders::_1));
-
-  if (touch_screen_allowed_) {
-    ev_iterate_touch_inputs(std::bind(&RecoveryUI::OnKeyDetected, this, std::placeholders::_1));
-
-    // Parse /proc/cmdline to determine if it's booting into recovery with a bootreason of
-    // "recovery_ui". This specific reason is set by some (wear) bootloaders, to allow an easier way
-    // to turn on text mode. It will only be set if the recovery boot is triggered from fastboot, or
-    // with 'adb reboot recovery'. Note that this applies to all build variants. Otherwise the text
-    // mode will be turned on automatically on debuggable builds, even without a swipe.
-    std::string cmdline;
-    if (android::base::ReadFileToString("/proc/cmdline", &cmdline)) {
-      is_bootreason_recovery_ui_ = cmdline.find("bootreason=recovery_ui") != std::string::npos;
-    } else {
-      // Non-fatal, and won't affect Init() result.
-      PLOG(WARNING) << "Failed to read /proc/cmdline";
-    }
-  }
-
-  if (!InitScreensaver()) {
-    LOG(INFO) << "Screensaver disabled";
-  }
-
-  // Create a separate thread that handles input events.
-  input_thread_ = std::thread([this]() {
-    while (!this->input_thread_stopped_) {
-      if (!ev_wait(500)) {
-        ev_dispatch();
-      }
-    }
-  });
-
-  return true;
-}
-
-void RecoveryUI::OnTouchDetected(int dx, int dy) {
-  enum SwipeDirection { UP, DOWN, RIGHT, LEFT } direction;
-
-  // We only consider a valid swipe if:
-  // - the delta along one axis is below touch_low_threshold_;
-  // - and the delta along the other axis is beyond touch_high_threshold_.
-  if (abs(dy) < touch_low_threshold_ && abs(dx) > touch_high_threshold_) {
-    direction = dx < 0 ? SwipeDirection::LEFT : SwipeDirection::RIGHT;
-  } else if (abs(dx) < touch_low_threshold_ && abs(dy) > touch_high_threshold_) {
-    direction = dy < 0 ? SwipeDirection::UP : SwipeDirection::DOWN;
-  } else {
-    LOG(DEBUG) << "Ignored " << dx << " " << dy << " (low: " << touch_low_threshold_
-               << ", high: " << touch_high_threshold_ << ")";
-    return;
-  }
-
-  // Allow turning on text mode with any swipe, if bootloader has set a bootreason of recovery_ui.
-  if (is_bootreason_recovery_ui_ && !IsTextVisible()) {
-    ShowText(true);
-    return;
-  }
-
-  LOG(DEBUG) << "Swipe direction=" << direction;
-  switch (direction) {
-    case SwipeDirection::UP:
-      ProcessKey(KEY_UP, 1);  // press up key
-      ProcessKey(KEY_UP, 0);  // and release it
-      break;
-
-    case SwipeDirection::DOWN:
-      ProcessKey(KEY_DOWN, 1);  // press down key
-      ProcessKey(KEY_DOWN, 0);  // and release it
-      break;
-
-    case SwipeDirection::LEFT:
-    case SwipeDirection::RIGHT:
-      ProcessKey(KEY_POWER, 1);  // press power key
-      ProcessKey(KEY_POWER, 0);  // and release it
-      break;
-  };
-}
-
-int RecoveryUI::OnInputEvent(int fd, uint32_t epevents) {
-  struct input_event ev;
-  if (ev_get_input(fd, epevents, &ev) == -1) {
-    return -1;
-  }
-
-  // Touch inputs handling.
-  //
-  // We handle the touch inputs by tracking the position changes between initial contacting and
-  // upon lifting. touch_start_X/Y record the initial positions, with touch_finger_down set. Upon
-  // detecting the lift, we unset touch_finger_down and detect a swipe based on position changes.
-  //
-  // Per the doc Multi-touch Protocol at below, there are two protocols.
-  // https://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt
-  //
-  // The main difference between the stateless type A protocol and the stateful type B slot protocol
-  // lies in the usage of identifiable contacts to reduce the amount of data sent to userspace. The
-  // slot protocol (i.e. type B) sends ABS_MT_TRACKING_ID with a unique id on initial contact, and
-  // sends ABS_MT_TRACKING_ID -1 upon lifting the contact. Protocol A doesn't send
-  // ABS_MT_TRACKING_ID -1 on lifting, but the driver may additionally report BTN_TOUCH event.
-  //
-  // For protocol A, we rely on BTN_TOUCH to recognize lifting, while for protocol B we look for
-  // ABS_MT_TRACKING_ID being -1.
-  //
-  // Touch input events will only be available if touch_screen_allowed_ is set.
-
-  if (ev.type == EV_SYN) {
-    if (touch_screen_allowed_ && ev.code == SYN_REPORT) {
-      // There might be multiple SYN_REPORT events. We should only detect a swipe after lifting the
-      // contact.
-      if (touch_finger_down_ && !touch_swiping_) {
-        touch_start_X_ = touch_X_;
-        touch_start_Y_ = touch_Y_;
-        touch_swiping_ = true;
-      } else if (!touch_finger_down_ && touch_swiping_) {
-        touch_swiping_ = false;
-        OnTouchDetected(touch_X_ - touch_start_X_, touch_Y_ - touch_start_Y_);
-      }
-    }
-    return 0;
-  }
-
-  if (ev.type == EV_REL) {
-    if (ev.code == REL_Y) {
-      // accumulate the up or down motion reported by
-      // the trackball.  When it exceeds a threshold
-      // (positive or negative), fake an up/down
-      // key event.
-      rel_sum += ev.value;
-      if (rel_sum > 3) {
-        ProcessKey(KEY_DOWN, 1);  // press down key
-        ProcessKey(KEY_DOWN, 0);  // and release it
-        rel_sum = 0;
-      } else if (rel_sum < -3) {
-        ProcessKey(KEY_UP, 1);  // press up key
-        ProcessKey(KEY_UP, 0);  // and release it
-        rel_sum = 0;
-      }
-    }
-  } else {
-    rel_sum = 0;
-  }
-
-  if (touch_screen_allowed_ && ev.type == EV_ABS) {
-    if (ev.code == ABS_MT_SLOT) {
-      touch_slot_ = ev.value;
-    }
-    // Ignore other fingers.
-    if (touch_slot_ > 0) return 0;
-
-    switch (ev.code) {
-      case ABS_MT_POSITION_X:
-        touch_X_ = ev.value;
-        touch_finger_down_ = true;
-        break;
-
-      case ABS_MT_POSITION_Y:
-        touch_Y_ = ev.value;
-        touch_finger_down_ = true;
-        break;
-
-      case ABS_MT_TRACKING_ID:
-        // Protocol B: -1 marks lifting the contact.
-        if (ev.value < 0) touch_finger_down_ = false;
-        break;
-    }
-    return 0;
-  }
-
-  if (ev.type == EV_KEY && ev.code <= KEY_MAX) {
-    if (touch_screen_allowed_) {
-      if (ev.code == BTN_TOUCH) {
-        // A BTN_TOUCH with value 1 indicates the start of contact (protocol A), with 0 means
-        // lifting the contact.
-        touch_finger_down_ = (ev.value == 1);
-      }
-
-      // Intentionally ignore BTN_TOUCH and BTN_TOOL_FINGER, which would otherwise trigger
-      // additional scrolling (because in ScreenRecoveryUI::ShowFile(), we consider keys other than
-      // KEY_POWER and KEY_UP as KEY_DOWN).
-      if (ev.code == BTN_TOUCH || ev.code == BTN_TOOL_FINGER) {
-        return 0;
-      }
-    }
-
-    ProcessKey(ev.code, ev.value);
-  }
-
-  return 0;
-}
-
-// Processes a key-up or -down event. A key is "registered" when it is pressed and then released,
-// with no other keypresses or releases in between. Registered keys are passed to CheckKey() to
-// see if it should trigger a visibility toggle, an immediate reboot, or be queued to be processed
-// next time the foreground thread wants a key (eg, for the menu).
-//
-// We also keep track of which keys are currently down so that CheckKey() can call IsKeyPressed()
-// to see what other keys are held when a key is registered.
-//
-// updown == 1 for key down events; 0 for key up events
-void RecoveryUI::ProcessKey(int key_code, int updown) {
-  bool register_key = false;
-  bool long_press = false;
-
-  {
-    std::lock_guard<std::mutex> lg(key_queue_mutex);
-    key_pressed[key_code] = updown;
-    if (updown) {
-      ++key_down_count;
-      key_last_down = key_code;
-      key_long_press = false;
-      std::thread time_key_thread(&RecoveryUI::TimeKey, this, key_code, key_down_count);
-      time_key_thread.detach();
-    } else {
-      if (key_last_down == key_code) {
-        long_press = key_long_press;
-        register_key = true;
-      }
-      key_last_down = -1;
-    }
-  }
-
-  bool reboot_enabled = enable_reboot;
-  if (register_key) {
-    switch (CheckKey(key_code, long_press)) {
-      case RecoveryUI::IGNORE:
-        break;
-
-      case RecoveryUI::TOGGLE:
-        ShowText(!IsTextVisible());
-        break;
-
-      case RecoveryUI::REBOOT:
-        if (reboot_enabled) {
-          reboot("reboot,");
-          while (true) {
-            pause();
-          }
-        }
-        break;
-
-      case RecoveryUI::ENQUEUE:
-        EnqueueKey(key_code);
-        break;
-    }
-  }
-}
-
-void RecoveryUI::TimeKey(int key_code, int count) {
-  std::this_thread::sleep_for(750ms);  // 750 ms == "long"
-  bool long_press = false;
-  {
-    std::lock_guard<std::mutex> lg(key_queue_mutex);
-    if (key_last_down == key_code && key_down_count == count) {
-      long_press = key_long_press = true;
-    }
-  }
-  if (long_press) KeyLongPress(key_code);
-}
-
-void RecoveryUI::EnqueueKey(int key_code) {
-  std::lock_guard<std::mutex> lg(key_queue_mutex);
-  const int queue_max = sizeof(key_queue) / sizeof(key_queue[0]);
-  if (key_queue_len < queue_max) {
-    key_queue[key_queue_len++] = key_code;
-    key_queue_cond.notify_one();
-  }
-}
-
-void RecoveryUI::SetScreensaverState(ScreensaverState state) {
-  switch (state) {
-    case ScreensaverState::NORMAL:
-      if (android::base::WriteStringToFile(std::to_string(brightness_normal_value_),
-                                           brightness_file_)) {
-        screensaver_state_ = ScreensaverState::NORMAL;
-        LOG(INFO) << "Brightness: " << brightness_normal_value_ << " (" << brightness_normal_
-                  << "%)";
-      } else {
-        LOG(ERROR) << "Unable to set brightness to normal";
-      }
-      break;
-    case ScreensaverState::DIMMED:
-      if (android::base::WriteStringToFile(std::to_string(brightness_dimmed_value_),
-                                           brightness_file_)) {
-        LOG(INFO) << "Brightness: " << brightness_dimmed_value_ << " (" << brightness_dimmed_
-                  << "%)";
-        screensaver_state_ = ScreensaverState::DIMMED;
-      } else {
-        LOG(ERROR) << "Unable to set brightness to dim";
-      }
-      break;
-    case ScreensaverState::OFF:
-      if (android::base::WriteStringToFile("0", brightness_file_)) {
-        LOG(INFO) << "Brightness: 0 (off)";
-        screensaver_state_ = ScreensaverState::OFF;
-      } else {
-        LOG(ERROR) << "Unable to set brightness to off";
-      }
-      break;
-    default:
-      LOG(ERROR) << "Invalid screensaver state";
-  }
-}
-
-int RecoveryUI::WaitKey() {
-  std::unique_lock<std::mutex> lk(key_queue_mutex);
-
-  // Check for a saved key queue interruption.
-  if (key_interrupted_) {
-    SetScreensaverState(ScreensaverState::NORMAL);
-    return static_cast<int>(KeyError::INTERRUPTED);
-  }
-
-  // Time out after UI_WAIT_KEY_TIMEOUT_SEC, unless a USB cable is plugged in.
-  do {
-    bool rc = key_queue_cond.wait_for(lk, std::chrono::seconds(UI_WAIT_KEY_TIMEOUT_SEC), [this] {
-      return this->key_queue_len != 0 || key_interrupted_;
-    });
-    if (key_interrupted_) {
-      SetScreensaverState(ScreensaverState::NORMAL);
-      return static_cast<int>(KeyError::INTERRUPTED);
-    }
-    if (screensaver_state_ != ScreensaverState::DISABLED) {
-      if (!rc) {
-        // Must be after a timeout. Lower the brightness level: NORMAL -> DIMMED; DIMMED -> OFF.
-        if (screensaver_state_ == ScreensaverState::NORMAL) {
-          SetScreensaverState(ScreensaverState::DIMMED);
-        } else if (screensaver_state_ == ScreensaverState::DIMMED) {
-          SetScreensaverState(ScreensaverState::OFF);
-        }
-      } else if (screensaver_state_ != ScreensaverState::NORMAL) {
-        // Drop the first key if it's changing from OFF to NORMAL.
-        if (screensaver_state_ == ScreensaverState::OFF) {
-          if (key_queue_len > 0) {
-            memcpy(&key_queue[0], &key_queue[1], sizeof(int) * --key_queue_len);
-          }
-        }
-
-        // Reset the brightness to normal.
-        SetScreensaverState(ScreensaverState::NORMAL);
-      }
-    }
-  } while (IsUsbConnected() && key_queue_len == 0);
-
-  int key = static_cast<int>(KeyError::TIMED_OUT);
-  if (key_queue_len > 0) {
-    key = key_queue[0];
-    memcpy(&key_queue[0], &key_queue[1], sizeof(int) * --key_queue_len);
-  }
-  return key;
-}
-
-void RecoveryUI::InterruptKey() {
-  {
-    std::lock_guard<std::mutex> lg(key_queue_mutex);
-    key_interrupted_ = true;
-  }
-  key_queue_cond.notify_one();
-}
-
-bool RecoveryUI::IsUsbConnected() {
-  int fd = open("/sys/class/android_usb/android0/state", O_RDONLY);
-  if (fd < 0) {
-    printf("failed to open /sys/class/android_usb/android0/state: %s\n", strerror(errno));
-    return 0;
-  }
-
-  char buf;
-  // USB is connected if android_usb state is CONNECTED or CONFIGURED.
-  int connected = (TEMP_FAILURE_RETRY(read(fd, &buf, 1)) == 1) && (buf == 'C');
-  if (close(fd) < 0) {
-    printf("failed to close /sys/class/android_usb/android0/state: %s\n", strerror(errno));
-  }
-  return connected;
-}
-
-bool RecoveryUI::IsKeyPressed(int key) {
-  std::lock_guard<std::mutex> lg(key_queue_mutex);
-  int pressed = key_pressed[key];
-  return pressed;
-}
-
-bool RecoveryUI::IsLongPress() {
-  std::lock_guard<std::mutex> lg(key_queue_mutex);
-  bool result = key_long_press;
-  return result;
-}
-
-bool RecoveryUI::HasThreeButtons() {
-  return has_power_key && has_up_key && has_down_key;
-}
-
-bool RecoveryUI::HasPowerKey() const {
-  return has_power_key;
-}
-
-bool RecoveryUI::HasTouchScreen() const {
-  return has_touch_screen;
-}
-
-void RecoveryUI::FlushKeys() {
-  std::lock_guard<std::mutex> lg(key_queue_mutex);
-  key_queue_len = 0;
-}
-
-RecoveryUI::KeyAction RecoveryUI::CheckKey(int key, bool is_long_press) {
-  {
-    std::lock_guard<std::mutex> lg(key_queue_mutex);
-    key_long_press = false;
-  }
-
-  // If we have power and volume up keys, that chord is the signal to toggle the text display.
-  if (HasThreeButtons() || (HasPowerKey() && HasTouchScreen() && touch_screen_allowed_)) {
-    if ((key == KEY_VOLUMEUP || key == KEY_UP) && IsKeyPressed(KEY_POWER)) {
-      return TOGGLE;
-    }
-  } else {
-    // Otherwise long press of any button toggles to the text display,
-    // and there's no way to toggle back (but that's pretty useless anyway).
-    if (is_long_press && !IsTextVisible()) {
-      return TOGGLE;
-    }
-
-    // Also, for button-limited devices, a long press is translated to KEY_ENTER.
-    if (is_long_press && IsTextVisible()) {
-      EnqueueKey(KEY_ENTER);
-      return IGNORE;
-    }
-  }
-
-  // Press power seven times in a row to reboot.
-  if (key == KEY_POWER) {
-    bool reboot_enabled = enable_reboot;
-
-    if (reboot_enabled) {
-      ++consecutive_power_keys;
-      if (consecutive_power_keys >= 7) {
-        return REBOOT;
-      }
-    }
-  } else {
-    consecutive_power_keys = 0;
-  }
-
-  last_key = key;
-  return (IsTextVisible() || screensaver_state_ == ScreensaverState::OFF) ? ENQUEUE : IGNORE;
-}
-
-void RecoveryUI::KeyLongPress(int) {
-}
-
-void RecoveryUI::SetEnableReboot(bool enabled) {
-  std::lock_guard<std::mutex> lg(key_queue_mutex);
-  enable_reboot = enabled;
-}