diff --git a/media/libwatchdog/Watchdog.cpp b/media/libwatchdog/Watchdog.cpp
new file mode 100644
index 0000000..bb012b9
--- /dev/null
+++ b/media/libwatchdog/Watchdog.cpp
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+#define LOG_TAG "Watchdog"
+
+#include <watchdog/Watchdog.h>
+
+#include <android-base/logging.h>
+#include <android-base/threads.h>
+#include <signal.h>
+#include <time.h>
+#include <cstring>
+#include <utils/Log.h>
+
+namespace android {
+
+Watchdog::Watchdog(::std::chrono::steady_clock::duration timeout) {
+    // Create the timer.
+    struct sigevent sev;
+    sev.sigev_notify = SIGEV_THREAD_ID;
+    sev.sigev_notify_thread_id = base::GetThreadId();
+    sev.sigev_signo = SIGABRT;
+    sev.sigev_value.sival_ptr = &mTimerId;
+    int err = timer_create(CLOCK_MONOTONIC, &sev, &mTimerId);
+    if (err != 0) {
+        PLOG(FATAL) << "Failed to create timer";
+    }
+
+    // Start the timer.
+    struct itimerspec spec;
+    memset(&spec, 0, sizeof(spec));
+    auto ns = std::chrono::duration_cast<std::chrono::nanoseconds>(timeout);
+    LOG_ALWAYS_FATAL_IF(timeout.count() <= 0, "Duration must be positive");
+    spec.it_value.tv_sec = ns.count() / 1000000000;
+    spec.it_value.tv_nsec = ns.count() % 1000000000;
+    err = timer_settime(mTimerId, 0, &spec, nullptr);
+    if (err != 0) {
+        PLOG(FATAL) << "Failed to start timer";
+    }
+}
+
+Watchdog::~Watchdog() {
+    // Delete the timer.
+    int err = timer_delete(mTimerId);
+    if (err != 0) {
+        PLOG(FATAL) << "Failed to delete timer";
+    }
+}
+
+}  // namespace android