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| 1 /* | |
| 2 * Copyright (C) 2011 Apple Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 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. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #include "config.h" | |
| 27 | |
| 28 #if USE(COREAUDIO) | |
| 29 | |
| 30 #include "PlatformClockCA.h" | |
| 31 | |
| 32 #include "FloatConversion.h" | |
| 33 #include <AudioToolbox/CoreAudioClock.h> | |
| 34 #include <CoreAudio/AudioHardware.h> | |
| 35 | |
| 36 using namespace WebCore; | |
| 37 | |
| 38 PlatformClockCA::PlatformClockCA() | |
| 39 : m_clock(0) | |
| 40 , m_running(false) | |
| 41 { | |
| 42 CAClockNew(0, &m_clock); | |
| 43 UInt32 timebase = kCAClockTimebase_AudioDevice; | |
| 44 UInt32 timebaseSize = sizeof(timebase); | |
| 45 CAClockSetProperty(m_clock, kCAClockProperty_InternalTimebase, timebaseSize,
&timebase); | |
| 46 | |
| 47 AudioObjectID defaultAudioOutput = 0; | |
| 48 UInt32 defaultAudioOutputSize = sizeof(defaultAudioOutput); | |
| 49 | |
| 50 AudioObjectPropertyAddress address; | |
| 51 address.mSelector = kAudioHardwarePropertyDefaultOutputDevice; | |
| 52 address.mScope = kAudioObjectPropertyScopeGlobal; | |
| 53 address.mElement = kAudioObjectPropertyElementMaster; | |
| 54 | |
| 55 AudioObjectGetPropertyData(kAudioObjectSystemObject, &address, 0, 0, &defaul
tAudioOutputSize, &defaultAudioOutput); | |
| 56 CAClockSetProperty(m_clock, kCAClockProperty_TimebaseSource, defaultAudioOut
putSize, &defaultAudioOutput); | |
| 57 } | |
| 58 | |
| 59 PlatformClockCA::~PlatformClockCA() | |
| 60 { | |
| 61 CAClockDispose(m_clock); | |
| 62 } | |
| 63 | |
| 64 void PlatformClockCA::setCurrentTime(float time) | |
| 65 { | |
| 66 if (m_running) | |
| 67 CAClockStop(m_clock); | |
| 68 CAClockTime caTime; | |
| 69 caTime.format = kCAClockTimeFormat_Seconds; | |
| 70 caTime.time.seconds = time; | |
| 71 CAClockSetCurrentTime(m_clock, &caTime); | |
| 72 if (m_running) | |
| 73 CAClockStart(m_clock); | |
| 74 } | |
| 75 | |
| 76 float PlatformClockCA::currentTime() const | |
| 77 { | |
| 78 CAClockTime caTime; | |
| 79 | |
| 80 // CAClock does not return the correct current time when stopped. Instead, q
uery for | |
| 81 // what is the start time, i.e. what the current time will be when started. | |
| 82 if (m_running) { | |
| 83 if (CAClockGetCurrentTime(m_clock, kCAClockTimeFormat_Seconds, &caTime)
== noErr) | |
| 84 return narrowPrecisionToFloat(caTime.time.seconds); | |
| 85 } else { | |
| 86 if (CAClockGetStartTime(m_clock, kCAClockTimeFormat_Seconds, &caTime) ==
noErr) | |
| 87 return narrowPrecisionToFloat(caTime.time.seconds); | |
| 88 } | |
| 89 return 0; | |
| 90 } | |
| 91 | |
| 92 void PlatformClockCA::setPlayRate(float rate) | |
| 93 { | |
| 94 CAClockSetPlayRate(m_clock, rate); | |
| 95 } | |
| 96 | |
| 97 float PlatformClockCA::PlatformClockCA::playRate() const | |
| 98 { | |
| 99 double rate = 0; | |
| 100 if (CAClockGetPlayRate(m_clock, &rate) == noErr) | |
| 101 return narrowPrecisionToFloat(rate); | |
| 102 return 0; | |
| 103 } | |
| 104 | |
| 105 void PlatformClockCA::start() | |
| 106 { | |
| 107 if (m_running) | |
| 108 return; | |
| 109 m_running = true; | |
| 110 CAClockStart(m_clock); | |
| 111 } | |
| 112 | |
| 113 void PlatformClockCA::stop() | |
| 114 { | |
| 115 if (!m_running) | |
| 116 return; | |
| 117 m_running = false; | |
| 118 CAClockStop(m_clock); | |
| 119 } | |
| 120 | |
| 121 | |
| 122 #endif | |
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Chromium Code Reviews
Issue 13713003:
Remove all of WebCore/platform/mac which is not mentioned in WebCore.gypi. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk