The Tor Browser / file comparison
comparison: content/media/webaudio/PeriodicWave.cpp
content/media/webaudio/PeriodicWave.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:f944137d1ba7 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim:set ts=2 sw=2 sts=2 et cindent: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "PeriodicWave.h" | |
| 8 #include "AudioContext.h" | |
| 9 #include "mozilla/dom/PeriodicWaveBinding.h" | |
| 10 | |
| 11 namespace mozilla { | |
| 12 namespace dom { | |
| 13 | |
| 14 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_1(PeriodicWave, mContext) | |
| 15 | |
| 16 NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(PeriodicWave, AddRef) | |
| 17 NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(PeriodicWave, Release) | |
| 18 | |
| 19 PeriodicWave::PeriodicWave(AudioContext* aContext, | |
| 20 const float* aRealData, | |
| 21 const float* aImagData, | |
| 22 const uint32_t aLength, | |
| 23 ErrorResult& aRv) | |
| 24 : mContext(aContext) | |
| 25 { | |
| 26 MOZ_ASSERT(aContext); | |
| 27 SetIsDOMBinding(); | |
| 28 | |
| 29 // Caller should have checked this and thrown. | |
| 30 MOZ_ASSERT(aLength > 0); | |
| 31 MOZ_ASSERT(aLength <= 4096); | |
| 32 mLength = aLength; | |
| 33 | |
| 34 // Copy coefficient data. The two arrays share an allocation. | |
| 35 mCoefficients = new ThreadSharedFloatArrayBufferList(2); | |
| 36 float* buffer = static_cast<float*>(malloc(aLength*sizeof(float)*2)); | |
| 37 if (buffer == nullptr) { | |
| 38 aRv.Throw(NS_ERROR_OUT_OF_MEMORY); | |
| 39 return; | |
| 40 } | |
| 41 PodCopy(buffer, aRealData, aLength); | |
| 42 mCoefficients->SetData(0, buffer, buffer); | |
| 43 PodCopy(buffer+aLength, aImagData, aLength); | |
| 44 mCoefficients->SetData(1, nullptr, buffer+aLength); | |
| 45 } | |
| 46 | |
| 47 size_t | |
| 48 PeriodicWave::SizeOfExcludingThisIfNotShared(MallocSizeOf aMallocSizeOf) const | |
| 49 { | |
| 50 // Not owned: | |
| 51 // - mContext | |
| 52 size_t amount = 0; | |
| 53 if (!mCoefficients->IsShared()) { | |
| 54 amount += mCoefficients->SizeOfIncludingThis(aMallocSizeOf); | |
| 55 } | |
| 56 | |
| 57 return amount; | |
| 58 } | |
| 59 | |
| 60 JSObject* | |
| 61 PeriodicWave::WrapObject(JSContext* aCx) | |
| 62 { | |
| 63 return PeriodicWaveBinding::Wrap(aCx, this); | |
| 64 } | |
| 65 | |
| 66 } // namespace dom | |
| 67 } // namespace mozilla | |
| 68 |
