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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/media/webaudio/PeriodicWave.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/media/webaudio/PeriodicWave.cpp')
-rw-r--r--dom/media/webaudio/PeriodicWave.cpp74
1 files changed, 74 insertions, 0 deletions
diff --git a/dom/media/webaudio/PeriodicWave.cpp b/dom/media/webaudio/PeriodicWave.cpp
new file mode 100644
index 000000000..396a93e13
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+++ b/dom/media/webaudio/PeriodicWave.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "PeriodicWave.h"
+#include "AudioContext.h"
+#include "mozilla/dom/PeriodicWaveBinding.h"
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(PeriodicWave, mContext)
+
+NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(PeriodicWave, AddRef)
+NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(PeriodicWave, Release)
+
+PeriodicWave::PeriodicWave(AudioContext* aContext,
+ const float* aRealData,
+ const float* aImagData,
+ const uint32_t aLength,
+ const bool aDisableNormalization,
+ ErrorResult& aRv)
+ : mContext(aContext)
+ , mDisableNormalization(aDisableNormalization)
+{
+ MOZ_ASSERT(aContext);
+
+ // Caller should have checked this and thrown.
+ MOZ_ASSERT(aLength > 0);
+ mLength = aLength;
+
+ // Copy coefficient data. The two arrays share an allocation.
+ mCoefficients = new ThreadSharedFloatArrayBufferList(2);
+ float* buffer = static_cast<float*>(malloc(aLength*sizeof(float)*2));
+ if (buffer == nullptr) {
+ aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
+ return;
+ }
+ PodCopy(buffer, aRealData, aLength);
+ mCoefficients->SetData(0, buffer, free, buffer);
+ PodCopy(buffer+aLength, aImagData, aLength);
+ mCoefficients->SetData(1, nullptr, free, buffer+aLength);
+}
+
+size_t
+PeriodicWave::SizeOfExcludingThisIfNotShared(MallocSizeOf aMallocSizeOf) const
+{
+ // Not owned:
+ // - mContext
+ size_t amount = 0;
+ if (!mCoefficients->IsShared()) {
+ amount += mCoefficients->SizeOfIncludingThis(aMallocSizeOf);
+ }
+
+ return amount;
+}
+
+size_t
+PeriodicWave::SizeOfIncludingThisIfNotShared(MallocSizeOf aMallocSizeOf) const
+{
+ return aMallocSizeOf(this) + SizeOfExcludingThisIfNotShared(aMallocSizeOf);
+}
+
+JSObject*
+PeriodicWave::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+ return PeriodicWaveBinding::Wrap(aCx, this, aGivenProto);
+}
+
+} // namespace dom
+} // namespace mozilla
+