michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "PeriodicWave.h"
michael@0: #include "AudioContext.h"
michael@0: #include "mozilla/dom/PeriodicWaveBinding.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_1(PeriodicWave, mContext)
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(PeriodicWave, AddRef)
michael@0: NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(PeriodicWave, Release)
michael@0: 
michael@0: PeriodicWave::PeriodicWave(AudioContext* aContext,
michael@0:                            const float* aRealData,
michael@0:                            const float* aImagData,
michael@0:                            const uint32_t aLength,
michael@0:                            ErrorResult& aRv)
michael@0:   : mContext(aContext)
michael@0: {
michael@0:   MOZ_ASSERT(aContext);
michael@0:   SetIsDOMBinding();
michael@0: 
michael@0:   // Caller should have checked this and thrown.
michael@0:   MOZ_ASSERT(aLength > 0);
michael@0:   MOZ_ASSERT(aLength <= 4096);
michael@0:   mLength = aLength;
michael@0: 
michael@0:   // Copy coefficient data. The two arrays share an allocation.
michael@0:   mCoefficients = new ThreadSharedFloatArrayBufferList(2);
michael@0:   float* buffer = static_cast<float*>(malloc(aLength*sizeof(float)*2));
michael@0:   if (buffer == nullptr) {
michael@0:     aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
michael@0:     return;
michael@0:   }
michael@0:   PodCopy(buffer, aRealData, aLength);
michael@0:   mCoefficients->SetData(0, buffer, buffer);
michael@0:   PodCopy(buffer+aLength, aImagData, aLength);
michael@0:   mCoefficients->SetData(1, nullptr, buffer+aLength);
michael@0: }
michael@0: 
michael@0: size_t
michael@0: PeriodicWave::SizeOfExcludingThisIfNotShared(MallocSizeOf aMallocSizeOf) const
michael@0: {
michael@0:   // Not owned:
michael@0:   // - mContext
michael@0:   size_t amount = 0;
michael@0:   if (!mCoefficients->IsShared()) {
michael@0:     amount += mCoefficients->SizeOfIncludingThis(aMallocSizeOf);
michael@0:   }
michael@0: 
michael@0:   return amount;
michael@0: }
michael@0: 
michael@0: JSObject*
michael@0: PeriodicWave::WrapObject(JSContext* aCx)
michael@0: {
michael@0:   return PeriodicWaveBinding::Wrap(aCx, this);
michael@0: }
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: