1/* 2 * Copyright (C) 2010, Google 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 INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25#include "config.h" 26#include "WebAudioBus.h" 27 28#if ENABLE(WEB_AUDIO) 29#include "AudioBus.h" 30#else 31namespace WebCore { 32class AudioBus { 33}; 34} // namespace WebCore 35#endif 36 37#include <wtf/OwnPtr.h> 38#include <wtf/PassOwnPtr.h> 39 40using namespace WebCore; 41 42namespace WebKit { 43 44class WebAudioBusPrivate : public AudioBus { 45}; 46 47void WebAudioBus::initialize(unsigned numberOfChannels, size_t length, double sampleRate) 48{ 49#if ENABLE(WEB_AUDIO) 50 AudioBus* audioBus = new AudioBus(numberOfChannels, length); 51 audioBus->setSampleRate(sampleRate); 52 53 if (m_private) 54 delete m_private; 55 m_private = static_cast<WebAudioBusPrivate*>(audioBus); 56#else 57 ASSERT_NOT_REACHED(); 58#endif 59} 60 61void WebAudioBus::reset() 62{ 63#if ENABLE(WEB_AUDIO) 64 delete m_private; 65 m_private = 0; 66#else 67 ASSERT_NOT_REACHED(); 68#endif 69} 70 71unsigned WebAudioBus::numberOfChannels() const 72{ 73#if ENABLE(WEB_AUDIO) 74 if (!m_private) 75 return 0; 76 return m_private->numberOfChannels(); 77#else 78 ASSERT_NOT_REACHED(); 79 return 0; 80#endif 81} 82 83size_t WebAudioBus::length() const 84{ 85#if ENABLE(WEB_AUDIO) 86 if (!m_private) 87 return 0; 88 return m_private->length(); 89#else 90 ASSERT_NOT_REACHED(); 91 return 0; 92#endif 93} 94 95double WebAudioBus::sampleRate() const 96{ 97#if ENABLE(WEB_AUDIO) 98 if (!m_private) 99 return 0; 100 return m_private->sampleRate(); 101#else 102 ASSERT_NOT_REACHED(); 103 return 0; 104#endif 105} 106 107float* WebAudioBus::channelData(unsigned channelIndex) 108{ 109#if ENABLE(WEB_AUDIO) 110 if (!m_private) 111 return 0; 112 ASSERT(channelIndex < numberOfChannels()); 113 return m_private->channel(channelIndex)->data(); 114#else 115 ASSERT_NOT_REACHED(); 116 return 0; 117#endif 118} 119 120PassOwnPtr<AudioBus> WebAudioBus::release() 121{ 122#if ENABLE(WEB_AUDIO) 123 OwnPtr<AudioBus> audioBus(adoptPtr(static_cast<AudioBus*>(m_private))); 124 m_private = 0; 125 return audioBus.release(); 126#else 127 ASSERT_NOT_REACHED(); 128 return 0; 129#endif 130} 131 132} // namespace WebKit 133