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author | Steve Block <steveblock@google.com> | 2011-05-06 11:45:16 +0100 |
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committer | Steve Block <steveblock@google.com> | 2011-05-12 13:44:10 +0100 |
commit | cad810f21b803229eb11403f9209855525a25d57 (patch) | |
tree | 29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /Source/WebCore/webaudio/AudioDestinationNode.h | |
parent | 121b0cf4517156d0ac5111caf9830c51b69bae8f (diff) | |
download | external_webkit-cad810f21b803229eb11403f9209855525a25d57.zip external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.bz2 |
Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'Source/WebCore/webaudio/AudioDestinationNode.h')
-rw-r--r-- | Source/WebCore/webaudio/AudioDestinationNode.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/Source/WebCore/webaudio/AudioDestinationNode.h b/Source/WebCore/webaudio/AudioDestinationNode.h new file mode 100644 index 0000000..4c21bb8 --- /dev/null +++ b/Source/WebCore/webaudio/AudioDestinationNode.h @@ -0,0 +1,72 @@ +/* + * 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. + */ + +#ifndef AudioDestinationNode_h +#define AudioDestinationNode_h + +#include "AudioDestination.h" +#include "AudioNode.h" +#include "AudioSourceProvider.h" +#include <wtf/OwnPtr.h> +#include <wtf/PassRefPtr.h> + +namespace WebCore { + +class AudioBus; +class AudioContext; + +class AudioDestinationNode : public AudioNode, public AudioSourceProvider { +public: + static PassRefPtr<AudioDestinationNode> create(AudioContext* context) + { + return adoptRef(new AudioDestinationNode(context)); + } + + virtual ~AudioDestinationNode(); + + // AudioNode + virtual void process(size_t) { }; // we're pulled by hardware so this is never called + virtual void reset() { m_currentTime = 0.0; }; + virtual void initialize(); + virtual void uninitialize(); + + // The audio hardware calls here periodically to gets its input stream. + virtual void provideInput(AudioBus*, size_t numberOfFrames); + + double currentTime() { return m_currentTime; } + + double sampleRate() const { return m_destination->sampleRate(); } + + unsigned numberOfChannels() const { return 2; } // FIXME: update when multi-channel (more than stereo) is supported + +private: + AudioDestinationNode(AudioContext*); + + OwnPtr<AudioDestination> m_destination; + double m_currentTime; +}; + +} // namespace WebCore + +#endif // AudioDestinationNode_h |