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1 /* | 1 /* |
2 * Copyright (C) 2011, Google Inc. All rights reserved. | 2 * Copyright (C) 2011, 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 OfflineAudioDestinationNode_h | 25 #ifndef OfflineAudioDestinationNode_h |
26 #define OfflineAudioDestinationNode_h | 26 #define OfflineAudioDestinationNode_h |
27 | 27 |
28 #include "modules/webaudio/AudioBuffer.h" | 28 #include "modules/webaudio/AudioBuffer.h" |
29 #include "modules/webaudio/AudioDestinationNode.h" | 29 #include "modules/webaudio/AudioDestinationNode.h" |
| 30 #include "modules/webaudio/OfflineAudioContext.h" |
30 #include "public/platform/WebThread.h" | 31 #include "public/platform/WebThread.h" |
31 #include "wtf/PassRefPtr.h" | 32 #include "wtf/PassRefPtr.h" |
32 #include "wtf/RefPtr.h" | 33 #include "wtf/RefPtr.h" |
33 | 34 |
34 namespace blink { | 35 namespace blink { |
35 | 36 |
36 class AbstractAudioContext; | 37 class AbstractAudioContext; |
37 class AudioBus; | 38 class AudioBus; |
| 39 class OfflineAudioContext; |
38 | 40 |
39 class OfflineAudioDestinationHandler final : public AudioDestinationHandler { | 41 class OfflineAudioDestinationHandler final : public AudioDestinationHandler { |
40 public: | 42 public: |
41 static PassRefPtr<OfflineAudioDestinationHandler> create(AudioNode&, AudioBu
ffer* renderTarget); | 43 static PassRefPtr<OfflineAudioDestinationHandler> create(AudioNode&, AudioBu
ffer* renderTarget); |
42 ~OfflineAudioDestinationHandler() override; | 44 ~OfflineAudioDestinationHandler() override; |
43 | 45 |
44 // AudioHandler | 46 // AudioHandler |
45 void dispose() override; | 47 void dispose() override; |
46 void initialize() override; | 48 void initialize() override; |
47 void uninitialize() override; | 49 void uninitialize() override; |
48 | 50 |
49 // AudioDestinationHandler | 51 OfflineAudioContext* context() const final; |
| 52 |
| 53 // Override the one from AudioContext. Create a rendering thread and |
| 54 // initiate rendering loop or resume rendering if already started and |
| 55 // suspended. |
50 void startRendering() override; | 56 void startRendering() override; |
| 57 |
| 58 // There is no support of the explicit stopping in OfflineAudioContext. This |
| 59 // is just to match the class method signature. |
51 void stopRendering() override; | 60 void stopRendering() override; |
52 | 61 |
53 float sampleRate() const override { return m_renderTarget->sampleRate(); } | 62 float sampleRate() const override { return m_renderTarget->sampleRate(); } |
| 63 |
| 64 // Return the frame position by quantizing the time (in seconds) and |
| 65 // rounding it down to the nearest render quantum boundary. |
| 66 size_t quantizeTimeToRenderQuantum(double when) const; |
| 67 |
| 68 WebThread* offlineRenderThread(); |
54 | 69 |
55 private: | 70 private: |
56 OfflineAudioDestinationHandler(AudioNode&, AudioBuffer* renderTarget); | 71 OfflineAudioDestinationHandler(AudioNode&, AudioBuffer* renderTarget); |
57 void offlineRender(); | 72 |
58 void offlineRenderInternal(); | 73 // For start/suspend/resume rendering in the destination node. |
| 74 void startOfflineRendering(); |
| 75 void runOfflineRendering(); |
| 76 void finishOfflineRendering(); |
59 | 77 |
60 // For completion callback on main thread. | 78 // For completion callback on main thread. |
61 void notifyComplete(); | 79 void notifyComplete(); |
62 | 80 |
63 // This AudioHandler renders into this AudioBuffer. | 81 // This AudioHandler renders into this AudioBuffer. |
64 // This Persistent doesn't make a reference cycle including the owner | 82 // This Persistent doesn't make a reference cycle including the owner |
65 // OfflineAudioDestinationNode. | 83 // OfflineAudioDestinationNode. |
66 Persistent<AudioBuffer> m_renderTarget; | 84 Persistent<AudioBuffer> m_renderTarget; |
67 // Temporary AudioBus for each render quantum. | 85 // Temporary AudioBus for each render quantum. |
68 RefPtr<AudioBus> m_renderBus; | 86 RefPtr<AudioBus> m_renderBus; |
69 | 87 |
70 // Rendering thread. | 88 // Rendering thread. |
71 OwnPtr<WebThread> m_renderThread; | 89 OwnPtr<WebThread> m_renderThread; |
72 bool m_startedRendering; | 90 |
| 91 size_t m_framesProcessed; |
| 92 size_t m_framesToProcess; |
| 93 |
| 94 bool m_isRenderingStarted; |
73 }; | 95 }; |
74 | 96 |
75 class OfflineAudioDestinationNode final : public AudioDestinationNode { | 97 class OfflineAudioDestinationNode final : public AudioDestinationNode { |
76 public: | 98 public: |
77 static OfflineAudioDestinationNode* create(AbstractAudioContext*, AudioBuffe
r* renderTarget); | 99 static OfflineAudioDestinationNode* create(AbstractAudioContext*, AudioBuffe
r* renderTarget); |
78 | 100 |
79 private: | 101 private: |
80 OfflineAudioDestinationNode(AbstractAudioContext&, AudioBuffer* renderTarget
); | 102 OfflineAudioDestinationNode(AbstractAudioContext&, AudioBuffer* renderTarget
); |
81 }; | 103 }; |
82 | 104 |
83 } // namespace blink | 105 } // namespace blink |
84 | 106 |
85 #endif // OfflineAudioDestinationNode_h | 107 #endif // OfflineAudioDestinationNode_h |
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