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
31 namespace WebCore {
32 class AudioBus {
33 };
34 } // namespace WebCore
35 #endif
36
37 #include <wtf/OwnPtr.h>
38 #include <wtf/PassOwnPtr.h>
39
40 using namespace WebCore;
41
42 namespace WebKit {
43
44 class WebAudioBusPrivate : public AudioBus {
45 };
46
initialize(unsigned numberOfChannels,size_t length,double sampleRate)47 void 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
reset()61 void 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
numberOfChannels() const71 unsigned 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
length() const83 size_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
sampleRate() const95 double 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
channelData(unsigned channelIndex)107 float* 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
release()120 PassOwnPtr<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