2 * Copyright (C) 2013-2014 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
27 #include "MediaSessionManager.h"
29 #if USE(AUDIO_SESSION)
31 #include "AudioSession.h"
35 using namespace WebCore;
37 static const size_t kWebAudioBufferSize = 128;
39 #if PLATFORM(IOS) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
40 static const size_t kLowPowerVideoBufferSize = 4096;
43 void MediaSessionManager::updateSessionState()
45 LOG(Media, "MediaSessionManager::updateSessionState() - types: Video(%d), Audio(%d), WebAudio(%d)", count(MediaSession::Video), count(MediaSession::Audio), count(MediaSession::WebAudio));
47 if (has(MediaSession::WebAudio))
48 AudioSession::sharedSession().setPreferredBufferSize(kWebAudioBufferSize);
49 #if PLATFORM(IOS) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
50 else if ((has(MediaSession::Video) || has(MediaSession::Audio)) && Settings::lowPowerVideoAudioBufferSizeEnabled()) {
51 // FIXME: <http://webkit.org/b/116725> Figure out why enabling the code below
52 // causes media LayoutTests to fail on 10.8.
53 AudioSession::sharedSession().setPreferredBufferSize(kLowPowerVideoBufferSize);
58 if (has(MediaSession::WebAudio))
59 AudioSession::sharedSession().setActive(true);
61 AudioSession::sharedSession().setActive(false);
63 if (!Settings::shouldManageAudioSession())
66 if (has(MediaSession::Video) || has(MediaSession::Audio))
67 AudioSession::sharedSession().setCategory(AudioSession::MediaPlayback);
68 else if (has(MediaSession::WebAudio))
69 AudioSession::sharedSession().setCategory(AudioSession::AmbientSound);
73 #endif // USE(AUDIO_SESSION)