blob: 74e7f87076cfc362923fda4f0404afe1e6b5b933 [file] [log] [blame]
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <jni.h>
#include "base/android/scoped_java_ref.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/macros.h"
#include "base/single_thread_task_runner.h"
namespace media {
// Uses a watchdog Android MediaPlayer to listen for MediaServer crashes, and
// to notify clients when crashes occur.
// NOTE: The MediaServiceThrottler is the only client of this class, and it
// manages the MediaServerCrashListener's lifetime carefully. There should not
// be more than a single instance of this class per process.
class MediaServerCrashListener {
using OnMediaServerCrashCB = base::Callback<void(bool)>;
// Basic constructor. |on_server_crash_cb| will be posted to
// |callback_task_runner| everytime the watchdog MediaPlayer detects a crash.
const OnMediaServerCrashCB& on_server_crash_cb,
scoped_refptr<base::SingleThreadTaskRunner> callback_task_runner);
// Ensure the underlying watchdog MediaPlayer is created.
// This needs to be called to restart listening after a MediaServer crash.
void EnsureListening();
// Called from JNI whenever a MEDIA_ERROR_SERVER_DIED is received.
void OnMediaServerCrashDetected(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& obj,
jboolean watchdog_needs_release);
void ReleaseWatchdog();
OnMediaServerCrashCB on_server_crash_cb_;
// Task runner on which the |on_server_crash_cb_| will be posted.
scoped_refptr<base::SingleThreadTaskRunner> callback_task_runner_;
base::android::ScopedJavaGlobalRef<jobject> j_crash_listener_;
} // namespace media