Upstream Chrome for Android Cast.

chrome/browser/media/android/remote/remote_media_player_bridge.cc

+// Copyright 2013 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 "chrome/browser/media/android/remote/remote_media_player_bridge.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "chrome/browser/media/android/remote/record_cast_action.h"
+#include "chrome/browser/media/android/remote/remote_media_player_manager.h"
+#include "content/browser/android/content_view_core_impl.h"

[Yaron, 2015/03/12 19:02:10]

You can replace this with content/public/browser/android/content_view_core.h and
(ContentViewCore below) to fix a layering issue.

[aberent, 2015/03/12 20:02:08]

Unfortunately not. GetContentViewCore() returns a ContentViewCoreImpl, and
without this header file the compiler doesn't know that there is any
relationship between a ContentViewCore and a ContentViewCoreImpl. Once the
downstream code is gone I will create a CL that changes GetContentViewCore() to
return ContentViewCore (I have checked that this works), but until it has gone
that fix would need a two sided patch to avoid breaking the downstream version.

[Yaron, 2015/03/12 20:30:51]

Dang, ok.

+#include "jni/RemoteMediaPlayerBridge_jni.h"
+#include "media/base/android/media_common_android.h"
+#include "media/base/android/media_resource_getter.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "ui/gfx/android/java_bitmap.h"
+
+using base::android::ConvertUTF8ToJavaString;
+using base::android::ScopedJavaLocalRef;
+using base::android::AttachCurrentThread;
+
+namespace {
+/*
+ * Dummy function to fix callbacks; 0 argument Callback constructor creates

[scherkus (not reviewing), 2015/03/12 19:15:04]

I don't think this comment is being very helpful -- a better comment would
explain *why* we don't need to do anything with the player_id when this callback
is run

(also, it should be using // comments seeing as this is c++ code!)

[aberent, 2015/03/13 19:04:36]

Comment updated. The callback is never called by MediaPlayerAndroid, or by
RemoteMediaPlayerBridge, but I need a function to satisfy the compiler. 

Longer term we should probably remove this from the MediaPlayerAndroid
constructor, but I would like to discuss this with Min before I do so.

+ * a callback to 0x0, which crashes when called.
+ */
+void DoNothing(int /*i*/) {}
+}
+
+namespace remote_media {
+
+RemoteMediaPlayerBridge::RemoteMediaPlayerBridge(
+    MediaPlayerAndroid* local_player, const std::string& user_agent,
+    bool hide_url_log, RemoteMediaPlayerManager* manager)
+    : MediaPlayerAndroid(local_player->player_id(), manager,
+                         RequestMediaResourcesCB(base::Bind(&DoNothing)),

[scherkus (not reviewing), 2015/03/12 19:15:04]

you shouldn't have to specify the constructor, should you? I would think just
binding would work...

[aberent, 2015/03/13 19:04:36]

Done.

+                         local_player->frame_url()),
+      start_position_millis_(0),
+      local_player_(local_player),
+      in_use_(false),
+      prepared_(false),
+      pending_play_(false),
+      width_(0),
+      height_(0),
+      should_seek_on_prepare_(false),
+      hide_url_log_(hide_url_log),
+      volume_(-1.0),
+      url_(local_player->GetUrl()),
+      first_party_for_cookies_(local_player->GetFirstPartyForCookies()),
+      user_agent_(user_agent),
+      weak_factory_(this) {
+  if (local_player->GetCurrentTime().InMilliseconds() > 0)
+    start_position_millis_ = local_player->GetCurrentTime().InMilliseconds();
+  JNIEnv* env = base::android::AttachCurrentThread();
+  CHECK(env);
+  ScopedJavaLocalRef<jstring> j_url_string;
+  if (url_.is_valid())

[Bernhard Bauer, 2015/03/13 12:18:02]

Wrap the block braces if it's more than one line.

[aberent, 2015/03/13 19:04:36]

Done.

+    // Create a Java String for the URL.
+    j_url_string = ConvertUTF8ToJavaString(env, url_.spec());
+  ScopedJavaLocalRef<jstring> j_frame_url_string;
+  if (local_player->frame_url().is_valid())
+    // Create a Java String for the URL.
+    j_frame_url_string = ConvertUTF8ToJavaString(
+        env, local_player->frame_url().spec());
+  java_bridge_.Reset(
+      Java_RemoteMediaPlayerBridge_create(env, reinterpret_cast<intptr_t>(this),
+                                          start_position_millis_,
+                                          j_url_string.obj(),
+                                          j_frame_url_string.obj()));
+}
+
+RemoteMediaPlayerBridge::~RemoteMediaPlayerBridge() {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  CHECK(env);
+  Java_RemoteMediaPlayerBridge_destroy(env, java_bridge_.obj());
+  Release();
+}
+
+int RemoteMediaPlayerBridge::GetVideoWidth() {
+  return local_player_->GetVideoWidth();
+}
+
+int RemoteMediaPlayerBridge::GetVideoHeight() {
+  return local_player_->GetVideoHeight();
+}
+
+void RemoteMediaPlayerBridge::OnVideoSizeChanged(int width, int height) {
+  width_ = width;
+  height_ = height;
+  MediaPlayerAndroid::OnVideoSizeChanged(width, height);
+}
+
+void RemoteMediaPlayerBridge::OnPlaybackComplete() {
+  time_update_timer_.Stop();
+  MediaPlayerAndroid::OnPlaybackComplete();
+}
+
+void RemoteMediaPlayerBridge::OnMediaInterrupted() {}
+
+void RemoteMediaPlayerBridge::OnMediaPrepared() {
+  if (!in_use_)
+    return;
+
+  prepared_ = true;
+  duration_ = GetDuration();
+
+  // If media player was recovered from a saved state, consume all the pending
+  // events.
+  if (should_seek_on_prepare_) {
+    PendingSeekInternal(pending_seek_);
+    pending_seek_ = base::TimeDelta::FromMilliseconds(0);
+    should_seek_on_prepare_ = false;
+  }
+
+  if (pending_play_) {
+    StartInternal();
+    pending_play_ = false;
+  }
+
+  manager()->OnMediaMetadataChanged(
+      player_id(), duration_, width_, height_, true);
+}
+
+void RemoteMediaPlayerBridge::StartInternal() {
+  JNIEnv* env = AttachCurrentThread();
+  Java_RemoteMediaPlayerBridge_start(env, java_bridge_.obj());
+  if (!time_update_timer_.IsRunning()) {
+    time_update_timer_.Start(
+        FROM_HERE,
+        base::TimeDelta::FromMilliseconds(media::kTimeUpdateInterval),
+        this, &RemoteMediaPlayerBridge::OnTimeUpdateTimerFired);
+  }
+}
+
+void RemoteMediaPlayerBridge::PauseInternal() {
+  JNIEnv* env = AttachCurrentThread();
+  Java_RemoteMediaPlayerBridge_pause(env, java_bridge_.obj());
+  time_update_timer_.Stop();
+}
+
+void RemoteMediaPlayerBridge::SeekInternal(base::TimeDelta time) {
+  if (time > duration_)
+    time = duration_;
+
+  // Seeking to an invalid position may cause media player to stuck in an
+  // error state.
+  if (time < base::TimeDelta()) {
+    DCHECK_EQ(-1.0, time.InMillisecondsF());
+    return;
+  }
+
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+  int time_msec = static_cast<int>(time.InMilliseconds());
+  Java_RemoteMediaPlayerBridge_seekTo(
+      env, java_bridge_.obj(), time_msec);
+}
+
+void RemoteMediaPlayerBridge::OnTimeUpdateTimerFired() {
+  manager()->OnTimeUpdate(
+      player_id(), GetCurrentTime(), base::TimeTicks::Now());
+}
+
+void RemoteMediaPlayerBridge::PendingSeekInternal(const base::TimeDelta& time) {
+  SeekInternal(time);
+}
+
+void RemoteMediaPlayerBridge::Prepare() {
+  DCHECK(!in_use_);
+  DCHECK(IsMediaPlayableRemotely());
+  in_use_ = true;
+  AttachListener(java_bridge_.obj());
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+
+  if (url_.is_valid()) {
+    // Create a Java String for the URL.
+    ScopedJavaLocalRef<jstring> j_url_string =
+        ConvertUTF8ToJavaString(env, url_.spec());
+
+    jobject j_context = base::android::GetApplicationContext();
+    DCHECK(j_context);
+
+    ScopedJavaLocalRef<jstring> j_cookies = ConvertUTF8ToJavaString(
+        env, cookies_);
+    ScopedJavaLocalRef<jstring> j_user_agent = ConvertUTF8ToJavaString(
+        env, user_agent_);
+
+    if (!Java_RemoteMediaPlayerBridge_setDataSource(
+        env, java_bridge_.obj(), j_context, j_url_string.obj(),
+        j_cookies.obj(), j_user_agent.obj(), hide_url_log_)) {
+      OnMediaError(MEDIA_ERROR_FORMAT);
+      return;
+    }
+  }
+
+  if (!Java_RemoteMediaPlayerBridge_prepareAsync(env, java_bridge_.obj()))
+    OnMediaError(MEDIA_ERROR_FORMAT);
+}
+
+void RemoteMediaPlayerBridge::Pause(bool is_media_related_action) {
+  // Ignore the pause if it's not from an event that is explicitly telling
+  // the video to pause. It's possible for Pause() to be called for other
+  // reasons, such as freeing resources, etc. and during those times, the
+  // remote video playback should not be paused.
+  if (is_media_related_action) {
+    if (!in_use_) {
+      pending_play_ = false;
+    } else {
+      if (prepared_ && IsPlaying())
+        PauseInternal();
+      else
+        pending_play_ = false;
+    }
+  }
+}
+
+void RemoteMediaPlayerBridge::SetVideoSurface(gfx::ScopedJavaSurface surface) {
+  // The surface is reset whenever the fullscreen view is destroyed or created.
+  // Since the remote player doesn't use it, we forward it to the local player
+  // for the time when user disconnects and resumes local playback
+  // (see crbug.com/420690).
+  local_player_->SetVideoSurface(surface.Pass());
+}
+
+base::android::ScopedJavaLocalRef<jstring> RemoteMediaPlayerBridge::GetFrameUrl(
+    JNIEnv* env, jobject obj) {
+  return ConvertUTF8ToJavaString(env, frame_url().spec());
+}
+
+void RemoteMediaPlayerBridge::OnPlaying(JNIEnv* env, jobject obj) {
+  static_cast<RemoteMediaPlayerManager *>(manager())->OnPlaying(player_id());
+}
+
+void RemoteMediaPlayerBridge::OnPaused(JNIEnv* env, jobject obj) {
+  static_cast<RemoteMediaPlayerManager *>(manager())->OnPaused(player_id());
+}
+
+void RemoteMediaPlayerBridge::OnRouteSelected(JNIEnv* env, jobject obj,
+                                              jstring castingMessage) {
+  casting_message_.reset(
+      new std::string(
+          base::android::ConvertJavaStringToUTF8(env, castingMessage)));
+  static_cast<RemoteMediaPlayerManager *>(manager())->OnRemoteDeviceSelected(
+      player_id());
+}
+
+void RemoteMediaPlayerBridge::OnRouteUnselected(JNIEnv* env, jobject obj) {
+  casting_message_.reset();
+  static_cast<RemoteMediaPlayerManager *>(manager())->OnRemoteDeviceUnselected(
+      player_id());
+}
+
+void RemoteMediaPlayerBridge::OnPlaybackFinished(JNIEnv* env, jobject obj) {
+  static_cast<RemoteMediaPlayerManager *>(manager())->OnRemotePlaybackFinished(
+      player_id());
+}
+
+void RemoteMediaPlayerBridge::OnRouteAvailabilityChanged(JNIEnv* env,
+                                                         jobject obj,
+                                                         jboolean available) {
+  static_cast<RemoteMediaPlayerManager *>(manager())->
+      OnRouteAvailabilityChanged(player_id(), available);
+}
+
+// static
+bool RemoteMediaPlayerBridge::RegisterRemoteMediaPlayerBridge(JNIEnv* env) {
+  bool ret = RegisterNativesImpl(env);
+  DCHECK(g_RemoteMediaPlayerBridge_clazz);
+  return ret;
+}
+
+void RemoteMediaPlayerBridge::RequestRemotePlayback() {
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+
+  Java_RemoteMediaPlayerBridge_requestRemotePlayback(
+      env, java_bridge_.obj());
+}
+
+void RemoteMediaPlayerBridge::RequestRemotePlaybackControl() {
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+
+  Java_RemoteMediaPlayerBridge_requestRemotePlaybackControl(
+      env, java_bridge_.obj());
+}
+
+void RemoteMediaPlayerBridge::SetNativePlayer() {
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+
+  Java_RemoteMediaPlayerBridge_setNativePlayer(
+      env, java_bridge_.obj());
+}
+
+void RemoteMediaPlayerBridge::OnPlayerCreated() {
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+
+  Java_RemoteMediaPlayerBridge_onPlayerCreated(
+      env, java_bridge_.obj());
+}
+
+void RemoteMediaPlayerBridge::OnPlayerDestroyed() {
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+
+  Java_RemoteMediaPlayerBridge_onPlayerDestroyed(
+      env, java_bridge_.obj());
+}
+
+bool RemoteMediaPlayerBridge::IsRemotePlaybackAvailable() const {
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+
+  jboolean result = Java_RemoteMediaPlayerBridge_isRemotePlaybackAvailable(
+      env, java_bridge_.obj());
+
+  return result;
+}
+
+bool RemoteMediaPlayerBridge::IsRemotePlaybackPreferredForFrame() const {
+  if (in_use_) {
+    // We have already decided to use remote playback
+    return true;
+  }
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+
+  jboolean result =
+      Java_RemoteMediaPlayerBridge_isRemotePlaybackPreferredForFrame(
+          env, java_bridge_.obj());
+  return result;
+}
+
+std::string RemoteMediaPlayerBridge::GetCastingMessage() {
+  return casting_message_.get() ?

[Bernhard Bauer, 2015/03/13 12:18:02]

You don't need .get() to use it as a boolean expression (scoped_ptr has a
conversion to bool), and you don't need the .get() call if you dereference the
scoped_ptr.

[aberent, 2015/03/13 19:04:36]

Done.

+      *casting_message_.get() : std::string();
+}
+
+void RemoteMediaPlayerBridge::SetPosterBitmap(
+    const std::vector<SkBitmap>& bitmaps) {
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+
+  if (bitmaps.empty()) {
+    Java_RemoteMediaPlayerBridge_setPosterBitmap(env, java_bridge_.obj(), NULL);
+  } else {
+    ScopedJavaLocalRef<jobject> j_poster_bitmap;
+    j_poster_bitmap = gfx::ConvertToJavaBitmap(&(bitmaps[0]));
+
+    Java_RemoteMediaPlayerBridge_setPosterBitmap(env, java_bridge_.obj(),
+                                                 j_poster_bitmap.obj());
+  }
+}
+
+void RemoteMediaPlayerBridge::Start() {
+  if (!in_use_) {
+    pending_play_ = true;
+    Prepare();
+  } else {
+    if (prepared_)
+      StartInternal();
+    else
+      pending_play_ = true;
+  }
+}
+
+void RemoteMediaPlayerBridge::SeekTo(base::TimeDelta timestamp) {
+  // Record the time to seek when OnMediaPrepared() is called.
+  pending_seek_ = timestamp;
+  should_seek_on_prepare_ = true;
+
+  if (!in_use_)
+    Prepare();
+  else if (prepared_)
+    SeekInternal(timestamp);
+}
+
+void RemoteMediaPlayerBridge::Release() {
+  if (!in_use_)
+    return;
+  time_update_timer_.Stop();
+  if (prepared_) {
+    pending_seek_ = GetCurrentTime();
+    should_seek_on_prepare_ = true;
+  }
+
+  prepared_ = false;
+  pending_play_ = false;
+  JNIEnv* env = AttachCurrentThread();
+  Java_RemoteMediaPlayerBridge_release(env, java_bridge_.obj());
+  DetachListener();
+  in_use_ = false;
+}
+
+void RemoteMediaPlayerBridge::SetVolume(double volume) {
+  if (!in_use_) {
+    volume_ = volume;
+    return;
+  }
+
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+  Java_RemoteMediaPlayerBridge_setVolume(
+      env, java_bridge_.obj(), volume);
+}
+
+base::TimeDelta RemoteMediaPlayerBridge::GetCurrentTime() {
+  if (!prepared_)
+    return pending_seek_;
+  JNIEnv* env = AttachCurrentThread();
+  return base::TimeDelta::FromMilliseconds(
+      Java_RemoteMediaPlayerBridge_getCurrentPosition(
+          env, java_bridge_.obj()));
+}
+
+base::TimeDelta RemoteMediaPlayerBridge::GetDuration() {
+  if (!prepared_)
+    return duration_;
+  JNIEnv* env = AttachCurrentThread();
+  const int duration_ms =
+      Java_RemoteMediaPlayerBridge_getDuration(env, java_bridge_.obj());
+  // Sometimes we can't get the duration remotely, but the local media player
+  // knows it.
+  // TODO (aberent) This is for YouTube. Remove it when the YouTube receiver is
+  // fixed.
+  if (duration_ms == 0) {
+    return local_player_->GetDuration();
+  }
+  return duration_ms < 0 ? media::kInfiniteDuration()
+                         : base::TimeDelta::FromMilliseconds(duration_ms);
+}
+
+bool RemoteMediaPlayerBridge::IsPlaying() {
+  if (!prepared_)
+    return pending_play_;
+
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+  jboolean result = Java_RemoteMediaPlayerBridge_isPlaying(
+      env, java_bridge_.obj());
+  return result;
+}
+
+bool RemoteMediaPlayerBridge::CanPause() {
+  return true;
+}
+
+bool RemoteMediaPlayerBridge::CanSeekForward() {
+  return true;
+}
+
+bool RemoteMediaPlayerBridge::CanSeekBackward() {
+  return true;
+}
+
+bool RemoteMediaPlayerBridge::IsPlayerReady() {
+  return prepared_;
+}
+
+GURL RemoteMediaPlayerBridge::GetUrl() {
+  return url_;
+}
+
+GURL RemoteMediaPlayerBridge::GetFirstPartyForCookies() {
+  return first_party_for_cookies_;
+}
+
+void RemoteMediaPlayerBridge::Initialize() {
+  cookies_.clear();
+  media::MediaResourceGetter* resource_getter =
+      manager()->GetMediaResourceGetter();
+  resource_getter->GetCookies(
+      url_, first_party_for_cookies_,
+      base::Bind(&RemoteMediaPlayerBridge::OnCookiesRetrieved,
+                 weak_factory_.GetWeakPtr()));
+}
+
+bool RemoteMediaPlayerBridge::IsMediaPlayableRemotely() const {
+  JNIEnv* env = AttachCurrentThread();
+  CHECK(env);
+
+  return Java_RemoteMediaPlayerBridge_isMediaPlayableRemotely(
+      env, java_bridge_.obj());
+}
+
+base::android::ScopedJavaLocalRef<jstring> RemoteMediaPlayerBridge::GetTitle(
+    JNIEnv* env, jobject obj) {
+  base::string16 title;
+  content::ContentViewCoreImpl* core =
+      static_cast<RemoteMediaPlayerManager*>(manager())->GetContentViewCore();
+  if (core) {
+    content::WebContents* contents = core->GetWebContents();
+    if (contents) {
+      title = contents->GetTitle();
+    }
+  }
+  return base::android::ConvertUTF16ToJavaString(env, title);
+}
+
+void RemoteMediaPlayerBridge::OnCookiesRetrieved(const std::string& cookies) {
+  cookies_ = cookies;
+}
+
+} // namespace remote_media