Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(1492)

Unified Diff: content/browser/media/android/media_session.cc

Issue 1110833004: Move audio focus control from media/ to content/ and make it per WebContents. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 7 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
Index: content/browser/media/android/media_session.cc
diff --git a/content/browser/media/android/media_session.cc b/content/browser/media/android/media_session.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6a1d6bdb14561e5623cf2a37d2441d18bb49fcf0
--- /dev/null
+++ b/content/browser/media/android/media_session.cc
@@ -0,0 +1,133 @@
+// Copyright 2015 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 "content/browser/media/android/media_session.h"
+
+#include "base/android/jni_android.h"
+#include "content/browser/media/android/browser_media_player_manager.h"
whywhat 2015/05/12 12:50:45 You don't need this include.
mlamouri (slow - plz ping) 2015/05/19 21:56:15 Done.
+#include "jni/MediaSession_jni.h"
+
+namespace content {
+
+DEFINE_WEB_CONTENTS_USER_DATA_KEY(MediaSession);
+
+// static
+bool content::MediaSession::RegisterMediaSession(JNIEnv* env) {
+ return RegisterNativesImpl(env);
+}
+
+// static
+MediaSession* MediaSession::Get(WebContents* web_contents) {
+ MediaSession* session = FromWebContents(web_contents);
+ if (!session) {
+ CreateForWebContents(web_contents);
+ session = FromWebContents(web_contents);
+ session->Initialize();
+ }
+ return session;
+}
+
+MediaSession::~MediaSession() {
+ DCHECK(players_.IsEmpty());
+ DCHECK(!has_audio_focus_);
+}
+
+void MediaSession::Initialize() {
+ JNIEnv* env = base::android::AttachCurrentThread();
+ DCHECK(env);
+ j_media_session_.Reset(Java_MediaSession_createMediaSession(
+ env,
+ base::android::GetApplicationContext(),
+ reinterpret_cast<intptr_t>(this)));
+}
+
+MediaSession::MediaSession(WebContents* web_contents)
+ : WebContentsObserver(web_contents)
whywhat 2015/05/12 12:50:45 follow the style guide here that's different from
mlamouri (slow - plz ping) 2015/05/19 21:56:15 Sorry.
+ , has_audio_focus_(false)
+ , audio_focus_type_(Type::Transient) {
+}
+
+bool MediaSession::RequestAudioFocus(MediaSessionDelegate* delegate,
+ int player_id,
+ Type type) {
+ // If the audio focus is already granted and is of type Content, there is
+ // nothing to do. If it is granted of type Transient the requested type is
+ // also transient, there is also nothing to do. Otherwise, the session needs
+ // to request audio focus again.
+ if (has_audio_focus_ &&
whywhat 2015/05/12 12:50:45 if you had None in Type as the first member, could
mlamouri (slow - plz ping) 2015/05/19 21:56:15 I wouldn't recommend doing that. I could write a h
+ (audio_focus_type_ == Type::Content || audio_focus_type_ == type)) {
+ return true;
+ }
+
+ // The session should be reset if a player is starting while all players are
+ // suspended.
+ if (!has_audio_focus_)
+ players_.Clear();
+
+ players_.Add(new PlayerIdentifier(delegate, player_id));
+
+ JNIEnv* env = base::android::AttachCurrentThread();
+ DCHECK(env);
+ has_audio_focus_ = Java_MediaSession_requestAudioFocus(
+ env, j_media_session_.obj(), type == Type::Transient);
+ audio_focus_type_ = type;
+ return has_audio_focus_;
+}
+
+void MediaSession::AbandonAudioFocus(MediaSessionDelegate* delegate,
+ int player_id) {
+ for (PlayersMap::Iterator<PlayerIdentifier> iter(&players_); !iter.IsAtEnd();
whywhat 2015/05/12 12:50:45 why using IDMap if you're not using its ids? somet
mlamouri (slow - plz ping) 2015/05/19 21:56:15 Done. I'm using a hash_set now. It avoids adding d
+ iter.Advance()) {
+ PlayerIdentifier* player_identifier = iter.GetCurrentValue();
+ if (delegate == player_identifier->delegate_ &&
+ player_id == player_identifier->id_) {
+ players_.Remove(iter.GetCurrentKey());
+ }
+ }
+
+ AbandonAudioFocusIfNeeded();
+}
+
+void MediaSession::AbandonAudioFocus(MediaSessionDelegate* delegate) {
+ for (PlayersMap::Iterator<PlayerIdentifier> iter(&players_); !iter.IsAtEnd();
+ iter.Advance()) {
+ PlayerIdentifier* player_identifier = iter.GetCurrentValue();
+ if (delegate == player_identifier->delegate_)
+ players_.Remove(iter.GetCurrentKey());
+ }
+
+ AbandonAudioFocusIfNeeded();
+}
+
+void MediaSession::AbandonAudioFocusIfNeeded() {
+ if (!has_audio_focus_ || !players_.IsEmpty())
+ return;
+
+ JNIEnv* env = base::android::AttachCurrentThread();
+ DCHECK(env);
+ Java_MediaSession_abandonAudioFocus(env, j_media_session_.obj());
+ has_audio_focus_ = false;
+}
+
+void MediaSession::OnSuspend(JNIEnv* env, jobject obj) {
+ has_audio_focus_ = false;
+
+ for (PlayersMap::Iterator<PlayerIdentifier> iter(&players_); !iter.IsAtEnd();
+ iter.Advance()) {
+ PlayerIdentifier* player_identifier = iter.GetCurrentValue();
+ player_identifier->delegate_->OnSuspend(player_identifier->id_);
+ }
+}
+
+void MediaSession::OnResume(JNIEnv* env, jobject obj) {
+ has_audio_focus_ = true;
+
+ for (PlayersMap::Iterator<PlayerIdentifier> iter(&players_); !iter.IsAtEnd();
+ iter.Advance()) {
+ PlayerIdentifier* player_identifier = iter.GetCurrentValue();
+ player_identifier->delegate_->OnResume(player_identifier->id_);
+ }
+}
+
+} // namespace content

Powered by Google App Engine
This is Rietveld 408576698