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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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/StereoPannerNode.h" | 5 #include "modules/webaudio/StereoPannerNode.h" |
| 6 #include "bindings/core/v8/ExceptionMessages.h" | 6 #include "bindings/core/v8/ExceptionMessages.h" |
| 7 #include "bindings/core/v8/ExceptionState.h" | 7 #include "bindings/core/v8/ExceptionState.h" |
| 8 #include "core/dom/ExceptionCode.h" | 8 #include "core/dom/ExceptionCode.h" |
| 9 #include "core/dom/ExecutionContext.h" | 9 #include "core/dom/ExecutionContext.h" |
| 10 #include "modules/webaudio/AudioNodeInput.h" | 10 #include "modules/webaudio/AudioNodeInput.h" |
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| 52 } | 52 } |
| 53 | 53 |
| 54 AudioBus* inputBus = input(0).bus(); | 54 AudioBus* inputBus = input(0).bus(); |
| 55 if (!inputBus) { | 55 if (!inputBus) { |
| 56 outputBus->zero(); | 56 outputBus->zero(); |
| 57 return; | 57 return; |
| 58 } | 58 } |
| 59 | 59 |
| 60 if (m_pan->hasSampleAccurateValues()) { | 60 if (m_pan->hasSampleAccurateValues()) { |
| 61 // Apply sample-accurate panning specified by AudioParam automation. | 61 // Apply sample-accurate panning specified by AudioParam automation. |
| 62 ASSERT(framesToProcess <= m_sampleAccuratePanValues.size()); | 62 DCHECK_LE(framesToProcess, m_sampleAccuratePanValues.size()); |
| 63 if (framesToProcess <= m_sampleAccuratePanValues.size()) { | 63 if (framesToProcess <= m_sampleAccuratePanValues.size()) { |
| 64 float* panValues = m_sampleAccuratePanValues.data(); | 64 float* panValues = m_sampleAccuratePanValues.data(); |
| 65 m_pan->calculateSampleAccurateValues(panValues, framesToProcess); | 65 m_pan->calculateSampleAccurateValues(panValues, framesToProcess); |
| 66 m_stereoPanner->panWithSampleAccurateValues(inputBus, outputBus, pan
Values, framesToProcess); | 66 m_stereoPanner->panWithSampleAccurateValues(inputBus, outputBus, pan
Values, framesToProcess); |
| 67 } | 67 } |
| 68 } else { | 68 } else { |
| 69 m_stereoPanner->panToTargetValue(inputBus, outputBus, m_pan->value(), fr
amesToProcess); | 69 m_stereoPanner->panToTargetValue(inputBus, outputBus, m_pan->value(), fr
amesToProcess); |
| 70 } | 70 } |
| 71 } | 71 } |
| 72 | 72 |
| 73 void StereoPannerHandler::initialize() | 73 void StereoPannerHandler::initialize() |
| 74 { | 74 { |
| 75 if (isInitialized()) | 75 if (isInitialized()) |
| 76 return; | 76 return; |
| 77 | 77 |
| 78 m_stereoPanner = Spatializer::create(Spatializer::PanningModelEqualPower, sa
mpleRate()); | 78 m_stereoPanner = Spatializer::create(Spatializer::PanningModelEqualPower, sa
mpleRate()); |
| 79 | 79 |
| 80 AudioHandler::initialize(); | 80 AudioHandler::initialize(); |
| 81 } | 81 } |
| 82 | 82 |
| 83 void StereoPannerHandler::setChannelCount(unsigned long channelCount, ExceptionS
tate& exceptionState) | 83 void StereoPannerHandler::setChannelCount(unsigned long channelCount, ExceptionS
tate& exceptionState) |
| 84 { | 84 { |
| 85 ASSERT(isMainThread()); | 85 DCHECK(isMainThread()); |
| 86 BaseAudioContext::AutoLocker locker(context()); | 86 BaseAudioContext::AutoLocker locker(context()); |
| 87 | 87 |
| 88 // A PannerNode only supports 1 or 2 channels | 88 // A PannerNode only supports 1 or 2 channels |
| 89 if (channelCount > 0 && channelCount <= 2) { | 89 if (channelCount > 0 && channelCount <= 2) { |
| 90 if (m_channelCount != channelCount) { | 90 if (m_channelCount != channelCount) { |
| 91 m_channelCount = channelCount; | 91 m_channelCount = channelCount; |
| 92 if (m_channelCountMode != Max) | 92 if (m_channelCountMode != Max) |
| 93 updateChannelsForInputs(); | 93 updateChannelsForInputs(); |
| 94 } | 94 } |
| 95 } else { | 95 } else { |
| 96 exceptionState.throwDOMException( | 96 exceptionState.throwDOMException( |
| 97 NotSupportedError, | 97 NotSupportedError, |
| 98 ExceptionMessages::indexOutsideRange<unsigned long>( | 98 ExceptionMessages::indexOutsideRange<unsigned long>( |
| 99 "channelCount", | 99 "channelCount", |
| 100 channelCount, | 100 channelCount, |
| 101 1, | 101 1, |
| 102 ExceptionMessages::InclusiveBound, | 102 ExceptionMessages::InclusiveBound, |
| 103 2, | 103 2, |
| 104 ExceptionMessages::InclusiveBound)); | 104 ExceptionMessages::InclusiveBound)); |
| 105 } | 105 } |
| 106 } | 106 } |
| 107 | 107 |
| 108 void StereoPannerHandler::setChannelCountMode(const String& mode, ExceptionState
& exceptionState) | 108 void StereoPannerHandler::setChannelCountMode(const String& mode, ExceptionState
& exceptionState) |
| 109 { | 109 { |
| 110 ASSERT(isMainThread()); | 110 DCHECK(isMainThread()); |
| 111 BaseAudioContext::AutoLocker locker(context()); | 111 BaseAudioContext::AutoLocker locker(context()); |
| 112 | 112 |
| 113 ChannelCountMode oldMode = m_channelCountMode; | 113 ChannelCountMode oldMode = m_channelCountMode; |
| 114 | 114 |
| 115 if (mode == "clamped-max") { | 115 if (mode == "clamped-max") { |
| 116 m_newChannelCountMode = ClampedMax; | 116 m_newChannelCountMode = ClampedMax; |
| 117 } else if (mode == "explicit") { | 117 } else if (mode == "explicit") { |
| 118 m_newChannelCountMode = Explicit; | 118 m_newChannelCountMode = Explicit; |
| 119 } else if (mode == "max") { | 119 } else if (mode == "max") { |
| 120 // This is not supported for a StereoPannerNode, which can only handle | 120 // This is not supported for a StereoPannerNode, which can only handle |
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| 159 AudioNode::trace(visitor); | 159 AudioNode::trace(visitor); |
| 160 } | 160 } |
| 161 | 161 |
| 162 AudioParam* StereoPannerNode::pan() const | 162 AudioParam* StereoPannerNode::pan() const |
| 163 { | 163 { |
| 164 return m_pan; | 164 return m_pan; |
| 165 } | 165 } |
| 166 | 166 |
| 167 } // namespace blink | 167 } // namespace blink |
| 168 | 168 |
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