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Side by Side Diff: Source/modules/webaudio/AudioSummingJunction.h

Issue 205173002: Move webaudio to oilpan (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Fixed Created 6 years, 8 months ago
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1 /* 1 /*
2 * Copyright (C) 2012, Google Inc. All rights reserved. 2 * Copyright (C) 2012, Google Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 1. Redistributions of source code must retain the above copyright 7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer. 8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright 9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the 10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution. 11 * documentation and/or other materials provided with the distribution.
12 * 12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN Y 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN Y
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 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 AN Y 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN Y
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 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 O N 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O N
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 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 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. 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */ 23 */
24 24
25 #ifndef AudioSummingJunction_h 25 #ifndef AudioSummingJunction_h
26 #define AudioSummingJunction_h 26 #define AudioSummingJunction_h
27 27
28 #include "heap/Handle.h"
28 #include "platform/audio/AudioBus.h" 29 #include "platform/audio/AudioBus.h"
29 #include "wtf/HashSet.h" 30 #include "wtf/HashSet.h"
30 #include "wtf/Vector.h" 31 #include "wtf/Vector.h"
31 32
32 namespace WebCore { 33 namespace WebCore {
33 34
34 class AudioContext; 35 class AudioContext;
35 class AudioNodeOutput; 36 class AudioNodeOutput;
36 37
37 // An AudioSummingJunction represents a point where zero, one, or more AudioNode Outputs connect. 38 // An AudioSummingJunction represents a point where zero, one, or more AudioNode Outputs connect.
(...skipping 15 matching lines...) Expand all
53 54
54 // Rendering code accesses its version of the current connections here. 55 // Rendering code accesses its version of the current connections here.
55 unsigned numberOfRenderingConnections() const { return m_renderingOutputs.si ze(); } 56 unsigned numberOfRenderingConnections() const { return m_renderingOutputs.si ze(); }
56 AudioNodeOutput* renderingOutput(unsigned i) { return m_renderingOutputs[i]; } 57 AudioNodeOutput* renderingOutput(unsigned i) { return m_renderingOutputs[i]; }
57 bool isConnected() const { return numberOfRenderingConnections() > 0; } 58 bool isConnected() const { return numberOfRenderingConnections() > 0; }
58 59
59 virtual bool canUpdateState() = 0; 60 virtual bool canUpdateState() = 0;
60 virtual void didUpdate() = 0; 61 virtual void didUpdate() = 0;
61 62
62 protected: 63 protected:
63 RefPtr<AudioContext> m_context; 64 RefPtrWillBePersistent<AudioContext> m_context;
64 65
65 // m_outputs contains the AudioNodeOutputs representing current connections which are not disabled. 66 // m_outputs contains the AudioNodeOutputs representing current connections which are not disabled.
66 // The rendering code should never use this directly, but instead uses m_ren deringOutputs. 67 // The rendering code should never use this directly, but instead uses m_ren deringOutputs.
67 HashSet<AudioNodeOutput*> m_outputs; 68 HashSet<AudioNodeOutput*> m_outputs;
68 69
69 // m_renderingOutputs is a copy of m_outputs which will never be modified du ring the graph rendering on the audio thread. 70 // m_renderingOutputs is a copy of m_outputs which will never be modified du ring the graph rendering on the audio thread.
70 // This is the list which is used by the rendering code. 71 // This is the list which is used by the rendering code.
71 // Whenever m_outputs is modified, the context is told so it can later updat e m_renderingOutputs from m_outputs at a safe time. 72 // Whenever m_outputs is modified, the context is told so it can later updat e m_renderingOutputs from m_outputs at a safe time.
72 // Most of the time, m_renderingOutputs is identical to m_outputs. 73 // Most of the time, m_renderingOutputs is identical to m_outputs.
73 Vector<AudioNodeOutput*> m_renderingOutputs; 74 Vector<AudioNodeOutput*> m_renderingOutputs;
74 75
75 // m_renderingStateNeedUpdating keeps track if m_outputs is modified. 76 // m_renderingStateNeedUpdating keeps track if m_outputs is modified.
76 bool m_renderingStateNeedUpdating; 77 bool m_renderingStateNeedUpdating;
77 }; 78 };
78 79
79 } // namespace WebCore 80 } // namespace WebCore
80 81
81 #endif // AudioSummingJunction_h 82 #endif // AudioSummingJunction_h
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