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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "modules/webaudio/AudioContext.h" | 5 #include "modules/webaudio/AudioContext.h" |
6 | 6 |
7 #include "bindings/core/v8/ExceptionMessages.h" | 7 #include "bindings/core/v8/ExceptionMessages.h" |
8 #include "bindings/core/v8/ExceptionState.h" | 8 #include "bindings/core/v8/ExceptionState.h" |
9 #include "bindings/core/v8/ScriptPromiseResolver.h" | 9 #include "bindings/core/v8/ScriptPromiseResolver.h" |
10 #include "core/dom/DOMException.h" | 10 #include "core/dom/DOMException.h" |
11 #include "core/dom/ExceptionCode.h" | 11 #include "core/dom/ExceptionCode.h" |
12 #include "core/frame/UseCounter.h" | 12 #include "core/frame/UseCounter.h" |
13 #include "modules/webaudio/AudioBufferCallback.h" | 13 #include "modules/webaudio/AudioBufferCallback.h" |
| 14 #include "modules/webaudio/AudioContextOptions.h" |
14 #include "platform/Histogram.h" | 15 #include "platform/Histogram.h" |
15 #include "platform/audio/AudioUtilities.h" | 16 #include "platform/audio/AudioUtilities.h" |
| 17 #include "public/platform/WebAudioLatencyHint.h" |
16 | 18 |
17 #if DEBUG_AUDIONODE_REFERENCES | 19 #if DEBUG_AUDIONODE_REFERENCES |
18 #include <stdio.h> | 20 #include <stdio.h> |
19 #endif | 21 #endif |
20 | 22 |
21 namespace blink { | 23 namespace blink { |
22 | 24 |
23 // Don't allow more than this number of simultaneous AudioContexts | 25 // Don't allow more than this number of simultaneous AudioContexts |
24 // talking to hardware. | 26 // talking to hardware. |
25 const unsigned MaxHardwareContexts = 6; | 27 const unsigned MaxHardwareContexts = 6; |
26 static unsigned s_hardwareContextCount = 0; | 28 static unsigned s_hardwareContextCount = 0; |
27 static unsigned s_contextId = 0; | 29 static unsigned s_contextId = 0; |
28 | 30 |
29 AudioContext* AudioContext::create(Document& document, | 31 AudioContext* AudioContext::create(Document& document, |
| 32 const AudioContextOptions& contextOptions, |
| 33 ExceptionState& exceptionState) { |
| 34 WebAudioLatencyHint::Category latencyCategory; |
| 35 if (contextOptions.latencyHint() == "interactive") { |
| 36 latencyCategory = WebAudioLatencyHint::CategoryInteractive; |
| 37 } else if (contextOptions.latencyHint() == "balanced") { |
| 38 latencyCategory = WebAudioLatencyHint::CategoryBalanced; |
| 39 } else if (contextOptions.latencyHint() == "playback") { |
| 40 latencyCategory = WebAudioLatencyHint::CategoryPlayback; |
| 41 } else { |
| 42 NOTREACHED(); |
| 43 latencyCategory = WebAudioLatencyHint::CategoryInteractive; |
| 44 } |
| 45 |
| 46 WebAudioLatencyHint latencyHint(latencyCategory); |
| 47 return AudioContext::create(document, latencyHint, exceptionState); |
| 48 } |
| 49 |
| 50 AudioContext* AudioContext::create(Document& document, |
| 51 const WebAudioLatencyHint& latencyHint, |
30 ExceptionState& exceptionState) { | 52 ExceptionState& exceptionState) { |
31 DCHECK(isMainThread()); | 53 DCHECK(isMainThread()); |
32 | 54 |
33 UseCounter::countCrossOriginIframe(document, | 55 UseCounter::countCrossOriginIframe(document, |
34 UseCounter::AudioContextCrossOriginIframe); | 56 UseCounter::AudioContextCrossOriginIframe); |
35 | 57 |
36 if (s_hardwareContextCount >= MaxHardwareContexts) { | 58 if (s_hardwareContextCount >= MaxHardwareContexts) { |
37 exceptionState.throwDOMException( | 59 exceptionState.throwDOMException( |
38 NotSupportedError, ExceptionMessages::indexExceedsMaximumBound( | 60 NotSupportedError, ExceptionMessages::indexExceedsMaximumBound( |
39 "number of hardware contexts", | 61 "number of hardware contexts", |
40 s_hardwareContextCount, MaxHardwareContexts)); | 62 s_hardwareContextCount, MaxHardwareContexts)); |
41 return nullptr; | 63 return nullptr; |
42 } | 64 } |
43 | 65 |
44 AudioContext* audioContext = new AudioContext(document); | 66 AudioContext* audioContext = new AudioContext(document, latencyHint); |
45 audioContext->suspendIfNeeded(); | 67 audioContext->suspendIfNeeded(); |
46 | 68 |
47 if (!AudioUtilities::isValidAudioBufferSampleRate( | 69 if (!AudioUtilities::isValidAudioBufferSampleRate( |
48 audioContext->sampleRate())) { | 70 audioContext->sampleRate())) { |
49 exceptionState.throwDOMException( | 71 exceptionState.throwDOMException( |
50 NotSupportedError, | 72 NotSupportedError, |
51 ExceptionMessages::indexOutsideRange( | 73 ExceptionMessages::indexOutsideRange( |
52 "hardware sample rate", audioContext->sampleRate(), | 74 "hardware sample rate", audioContext->sampleRate(), |
53 AudioUtilities::minAudioBufferSampleRate(), | 75 AudioUtilities::minAudioBufferSampleRate(), |
54 ExceptionMessages::InclusiveBound, | 76 ExceptionMessages::InclusiveBound, |
(...skipping 21 matching lines...) Expand all Loading... |
76 ("WebAudio.AudioContext.MaxChannelsAvailable")); | 98 ("WebAudio.AudioContext.MaxChannelsAvailable")); |
77 DEFINE_STATIC_LOCAL(SparseHistogram, sampleRateHistogram, | 99 DEFINE_STATIC_LOCAL(SparseHistogram, sampleRateHistogram, |
78 ("WebAudio.AudioContext.HardwareSampleRate")); | 100 ("WebAudio.AudioContext.HardwareSampleRate")); |
79 maxChannelCountHistogram.sample( | 101 maxChannelCountHistogram.sample( |
80 audioContext->destination()->maxChannelCount()); | 102 audioContext->destination()->maxChannelCount()); |
81 sampleRateHistogram.sample(audioContext->sampleRate()); | 103 sampleRateHistogram.sample(audioContext->sampleRate()); |
82 | 104 |
83 return audioContext; | 105 return audioContext; |
84 } | 106 } |
85 | 107 |
86 AudioContext::AudioContext(Document& document) | 108 AudioContext::AudioContext(Document& document, |
87 : BaseAudioContext(&document), m_contextId(s_contextId++) {} | 109 const WebAudioLatencyHint& latencyHint) |
| 110 : BaseAudioContext(&document, latencyHint), m_contextId(s_contextId++) {} |
88 | 111 |
89 AudioContext::~AudioContext() { | 112 AudioContext::~AudioContext() { |
90 #if DEBUG_AUDIONODE_REFERENCES | 113 #if DEBUG_AUDIONODE_REFERENCES |
91 fprintf(stderr, "[%16p]: AudioContext::~AudioContext(): %u\n", this, | 114 fprintf(stderr, "[%16p]: AudioContext::~AudioContext(): %u\n", this, |
92 m_contextId); | 115 m_contextId); |
93 #endif | 116 #endif |
94 } | 117 } |
95 | 118 |
96 DEFINE_TRACE(AudioContext) { | 119 DEFINE_TRACE(AudioContext) { |
97 visitor->trace(m_closeResolver); | 120 visitor->trace(m_closeResolver); |
(...skipping 101 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
199 DCHECK(destination()); | 222 DCHECK(destination()); |
200 | 223 |
201 if (contextState() == Running) { | 224 if (contextState() == Running) { |
202 destination()->audioDestinationHandler().stopRendering(); | 225 destination()->audioDestinationHandler().stopRendering(); |
203 setContextState(Suspended); | 226 setContextState(Suspended); |
204 deferredTaskHandler().clearHandlersToBeDeleted(); | 227 deferredTaskHandler().clearHandlersToBeDeleted(); |
205 } | 228 } |
206 } | 229 } |
207 | 230 |
208 } // namespace blink | 231 } // namespace blink |
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