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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 Loading... |
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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