1 files changed, 130 insertions, 0 deletions
diff --git a/WebKit/chromium/src/WebAudioBus.cpp b/WebKit/chromium/src/WebAudioBus.cpp
new file mode 100644
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+++ b/WebKit/chromium/src/WebAudioBus.cpp
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+/*
+ * Copyright (C) 2010, Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1.  Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "WebAudioBus.h"
+
+#if ENABLE(WEB_AUDIO)
+#include "AudioBus.h"
+#else
+namespace WebCore {
+class AudioBus {
+};
+} // namespace WebCore
+#endif
+
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+
+using namespace WebCore;
+
+namespace WebKit {
+
+class WebAudioBusPrivate : public AudioBus {
+};
+
+WebAudioBus::~WebAudioBus()
+{
+#if ENABLE(WEB_AUDIO)
+    delete m_private;
+    m_private = 0;
+#endif
+}
+
+void WebAudioBus::initialize(unsigned numberOfChannels, size_t length, double sampleRate)
+{        
+#if ENABLE(WEB_AUDIO)
+    AudioBus* audioBus = new AudioBus(numberOfChannels, length);
+    audioBus->setSampleRate(sampleRate);
+
+    if (m_private)
+        delete m_private;
+    m_private = static_cast<WebAudioBusPrivate*>(audioBus);
+#else
+    ASSERT_NOT_REACHED();
+#endif
+}
+
+unsigned WebAudioBus::numberOfChannels() const
+{
+#if ENABLE(WEB_AUDIO)
+    if (!m_private)
+        return 0;
+    return m_private->numberOfChannels();
+#else
+    ASSERT_NOT_REACHED();
+    return 0;
+#endif
+}
+
+size_t WebAudioBus::length() const
+{
+#if ENABLE(WEB_AUDIO)
+    if (!m_private)
+        return 0;
+    return m_private->length();
+#else
+    ASSERT_NOT_REACHED();
+    return 0;
+#endif
+}
+
+double WebAudioBus::sampleRate() const
+{
+#if ENABLE(WEB_AUDIO)
+    if (!m_private)
+        return 0;
+    return m_private->sampleRate();
+#else
+    ASSERT_NOT_REACHED();
+    return 0;
+#endif
+}
+
+float* WebAudioBus::channelData(unsigned channelIndex)
+{
+#if ENABLE(WEB_AUDIO)
+    if (!m_private)
+        return 0;
+    ASSERT(channelIndex < numberOfChannels());
+    return m_private->channel(channelIndex)->data();
+#else
+    ASSERT_NOT_REACHED();
+    return 0;
+#endif
+}
+
+PassOwnPtr<AudioBus> WebAudioBus::release()
+{
+#if ENABLE(WEB_AUDIO)
+    OwnPtr<AudioBus> audioBus(adoptPtr(static_cast<AudioBus*>(m_private)));
+    m_private = 0;
+    return audioBus.release();
+#else
+    ASSERT_NOT_REACHED();
+    return 0;
+#endif
+}
+
+} // namespace WebKit