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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 |
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60 virtual void startRendering() = 0; | 60 virtual void startRendering() = 0; |
61 | 61 |
62 AudioSourceProvider* localAudioInputProvider() { return &m_localAudioInputPr
ovider; } | 62 AudioSourceProvider* localAudioInputProvider() { return &m_localAudioInputPr
ovider; } |
63 | 63 |
64 protected: | 64 protected: |
65 // LocalAudioInputProvider allows us to expose an AudioSourceProvider for lo
cal/live audio input. | 65 // LocalAudioInputProvider allows us to expose an AudioSourceProvider for lo
cal/live audio input. |
66 // If there is local/live audio input, we call set() with the audio input da
ta every render quantum. | 66 // If there is local/live audio input, we call set() with the audio input da
ta every render quantum. |
67 class LocalAudioInputProvider : public AudioSourceProvider { | 67 class LocalAudioInputProvider : public AudioSourceProvider { |
68 public: | 68 public: |
69 LocalAudioInputProvider() | 69 LocalAudioInputProvider() |
70 : m_sourceBus(2, AudioNode::ProcessingSizeInFrames) // FIXME: handle
non-stereo local input. | 70 : m_sourceBus(AudioBus::create(2, AudioNode::ProcessingSizeInFrames)
) // FIXME: handle non-stereo local input. |
71 { | 71 { |
72 } | 72 } |
73 | 73 |
74 void set(AudioBus* bus) | 74 void set(AudioBus* bus) |
75 { | 75 { |
76 if (bus) | 76 if (bus) |
77 m_sourceBus.copyFrom(*bus); | 77 m_sourceBus->copyFrom(*bus); |
78 } | 78 } |
79 | 79 |
80 // AudioSourceProvider. | 80 // AudioSourceProvider. |
81 virtual void provideInput(AudioBus* destinationBus, size_t numberOfFrame
s) | 81 virtual void provideInput(AudioBus* destinationBus, size_t numberOfFrame
s) |
82 { | 82 { |
83 bool isGood = destinationBus && destinationBus->length() == numberOf
Frames && m_sourceBus.length() == numberOfFrames; | 83 bool isGood = destinationBus && destinationBus->length() == numberOf
Frames && m_sourceBus->length() == numberOfFrames; |
84 ASSERT(isGood); | 84 ASSERT(isGood); |
85 if (isGood) | 85 if (isGood) |
86 destinationBus->copyFrom(m_sourceBus); | 86 destinationBus->copyFrom(*m_sourceBus); |
87 } | 87 } |
88 | 88 |
89 private: | 89 private: |
90 AudioBus m_sourceBus; | 90 RefPtr<AudioBus> m_sourceBus; |
91 }; | 91 }; |
92 | 92 |
93 virtual double tailTime() const OVERRIDE { return 0; } | 93 virtual double tailTime() const OVERRIDE { return 0; } |
94 virtual double latencyTime() const OVERRIDE { return 0; } | 94 virtual double latencyTime() const OVERRIDE { return 0; } |
95 | 95 |
96 // Counts the number of sample-frames processed by the destination. | 96 // Counts the number of sample-frames processed by the destination. |
97 size_t m_currentSampleFrame; | 97 size_t m_currentSampleFrame; |
98 | 98 |
99 LocalAudioInputProvider m_localAudioInputProvider; | 99 LocalAudioInputProvider m_localAudioInputProvider; |
100 }; | 100 }; |
101 | 101 |
102 } // namespace WebCore | 102 } // namespace WebCore |
103 | 103 |
104 #endif // AudioDestinationNode_h | 104 #endif // AudioDestinationNode_h |
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