2 * Copyright (C) 2013-2014 Apple Inc. All rights reserved.
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27 #include "PlatformMediaSessionManager.h"
29 #if USE(AUDIO_SESSION)
31 #include "AudioSession.h"
34 #include <wtf/Function.h>
36 using namespace WebCore;
38 static const size_t kWebAudioBufferSize = 128;
39 static const size_t kLowPowerVideoBufferSize = 4096;
41 void PlatformMediaSessionManager::updateSessionState()
43 LOG(Media, "PlatformMediaSessionManager::updateSessionState() - types: Video(%d), Audio(%d), WebAudio(%d)", count(PlatformMediaSession::Video), count(PlatformMediaSession::Audio), count(PlatformMediaSession::WebAudio));
45 if (has(PlatformMediaSession::WebAudio) || has(PlatformMediaSession::MediaStreamCapturingAudio))
46 AudioSession::sharedSession().setPreferredBufferSize(kWebAudioBufferSize);
47 else if ((has(PlatformMediaSession::Video) || has(PlatformMediaSession::Audio)) && Settings::lowPowerVideoAudioBufferSizeEnabled()) {
48 // FIXME: <http://webkit.org/b/116725> Figure out why enabling the code below
49 // causes media LayoutTests to fail on 10.8.
52 if (m_audioHardwareListener && m_audioHardwareListener->outputDeviceSupportsLowPowerMode())
53 bufferSize = kLowPowerVideoBufferSize;
55 bufferSize = kWebAudioBufferSize;
57 AudioSession::sharedSession().setPreferredBufferSize(bufferSize);
60 if (!Settings::shouldManageAudioSessionCategory())
63 bool hasWebAudioType = false;
64 bool hasAudibleAudioOrVideoMediaType = false;
65 bool hasAudioCapture = anyOfSessions([this, &hasWebAudioType, &hasAudibleAudioOrVideoMediaType] (PlatformMediaSession& session, size_t) mutable {
66 auto type = session.mediaType();
67 if (type == PlatformMediaSession::WebAudio)
68 hasWebAudioType = true;
69 if ((type == PlatformMediaSession::VideoAudio || type == PlatformMediaSession::Audio) && session.canProduceAudio())
70 hasAudibleAudioOrVideoMediaType = true;
71 return (type == PlatformMediaSession::MediaStreamCapturingAudio);
75 AudioSession::sharedSession().setCategory(AudioSession::PlayAndRecord);
76 else if (hasAudibleAudioOrVideoMediaType)
77 AudioSession::sharedSession().setCategory(AudioSession::MediaPlayback);
78 else if (hasWebAudioType)
79 AudioSession::sharedSession().setCategory(AudioSession::AmbientSound);
81 AudioSession::sharedSession().setCategory(AudioSession::None);
84 #endif // USE(AUDIO_SESSION)