OLD | NEW |
1 /* | 1 /* |
2 * Copyright (C) 2010, Google Inc. All rights reserved. | 2 * Copyright (C) 2010, 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 |
(...skipping 27 matching lines...) Expand all Loading... |
38 | 38 |
39 namespace WebCore { | 39 namespace WebCore { |
40 | 40 |
41 // PannerNode is an AudioNode with one input and one output. | 41 // PannerNode is an AudioNode with one input and one output. |
42 // It positions a sound in 3D space, with the exact effect dependent on the pann
ing model. | 42 // It positions a sound in 3D space, with the exact effect dependent on the pann
ing model. |
43 // It has a position and an orientation in 3D space which is relative to the pos
ition and orientation of the context's AudioListener. | 43 // It has a position and an orientation in 3D space which is relative to the pos
ition and orientation of the context's AudioListener. |
44 // A distance effect will attenuate the gain as the position moves away from the
listener. | 44 // A distance effect will attenuate the gain as the position moves away from the
listener. |
45 // A cone effect will attenuate the gain as the orientation moves away from the
listener. | 45 // A cone effect will attenuate the gain as the orientation moves away from the
listener. |
46 // All of these effects follow the OpenAL specification very closely. | 46 // All of these effects follow the OpenAL specification very closely. |
47 | 47 |
48 class PannerNode : public AudioNode { | 48 class PannerNode FINAL : public AudioNode { |
49 public: | 49 public: |
50 // These must be defined as in the .idl file and must match those in the Pan
ner class. | 50 // These must be defined as in the .idl file and must match those in the Pan
ner class. |
51 enum { | 51 enum { |
52 EQUALPOWER = 0, | 52 EQUALPOWER = 0, |
53 HRTF = 1, | 53 HRTF = 1, |
54 SOUNDFIELD = 2, | 54 SOUNDFIELD = 2, |
55 }; | 55 }; |
56 | 56 |
57 // These must be defined as in the .idl file and must match those | 57 // These must be defined as in the .idl file and must match those |
58 // in the DistanceEffect class. | 58 // in the DistanceEffect class. |
59 enum { | 59 enum { |
60 LINEAR_DISTANCE = 0, | 60 LINEAR_DISTANCE = 0, |
61 INVERSE_DISTANCE = 1, | 61 INVERSE_DISTANCE = 1, |
62 EXPONENTIAL_DISTANCE = 2, | 62 EXPONENTIAL_DISTANCE = 2, |
63 }; | 63 }; |
64 | 64 |
65 static PassRefPtr<PannerNode> create(AudioContext* context, float sampleRate
) | 65 static PassRefPtr<PannerNode> create(AudioContext* context, float sampleRate
) |
66 { | 66 { |
67 return adoptRef(new PannerNode(context, sampleRate)); | 67 return adoptRef(new PannerNode(context, sampleRate)); |
68 } | 68 } |
69 | 69 |
70 virtual ~PannerNode(); | 70 virtual ~PannerNode(); |
71 | 71 |
72 // AudioNode | 72 // AudioNode |
73 virtual void process(size_t framesToProcess); | 73 virtual void process(size_t framesToProcess) OVERRIDE; |
74 virtual void pullInputs(size_t framesToProcess); | 74 virtual void pullInputs(size_t framesToProcess) OVERRIDE; |
75 virtual void reset(); | 75 virtual void reset() OVERRIDE; |
76 virtual void initialize(); | 76 virtual void initialize() OVERRIDE; |
77 virtual void uninitialize(); | 77 virtual void uninitialize() OVERRIDE; |
78 | 78 |
79 // Listener | 79 // Listener |
80 AudioListener* listener(); | 80 AudioListener* listener(); |
81 | 81 |
82 // Panning model | 82 // Panning model |
83 String panningModel() const; | 83 String panningModel() const; |
84 bool setPanningModel(unsigned); // Returns true on success. | 84 bool setPanningModel(unsigned); // Returns true on success. |
85 void setPanningModel(const String&); | 85 void setPanningModel(const String&); |
86 | 86 |
87 // Position | 87 // Position |
(...skipping 68 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
156 | 156 |
157 unsigned m_connectionCount; | 157 unsigned m_connectionCount; |
158 | 158 |
159 // Synchronize process() and setPanningModel() which can change the panner. | 159 // Synchronize process() and setPanningModel() which can change the panner. |
160 mutable Mutex m_pannerLock; | 160 mutable Mutex m_pannerLock; |
161 }; | 161 }; |
162 | 162 |
163 } // namespace WebCore | 163 } // namespace WebCore |
164 | 164 |
165 #endif // PannerNode_h | 165 #endif // PannerNode_h |
OLD | NEW |