зеркало из https://github.com/mozilla/gecko-dev.git
98 строки
2.6 KiB
C++
98 строки
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "AudioBuffer.h"
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#include "mozilla/dom/AudioBufferBinding.h"
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#include "nsContentUtils.h"
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#include "AudioContext.h"
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#include "jsfriendapi.h"
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#include "mozilla/ErrorResult.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_CYCLE_COLLECTION_CLASS(AudioBuffer)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(AudioBuffer)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mContext)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mChannels)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(AudioBuffer)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mContext)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(AudioBuffer)
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NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
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for (uint32_t i = 0; i < tmp->mChannels.Length(); ++i) {
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mChannels[i])
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}
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(AudioBuffer)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(AudioBuffer)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AudioBuffer)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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AudioBuffer::AudioBuffer(AudioContext* aContext, uint32_t aLength,
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uint32_t aSampleRate)
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: mContext(aContext),
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mLength(aLength),
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mSampleRate(aSampleRate)
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{
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SetIsDOMBinding();
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NS_HOLD_JS_OBJECTS(this, AudioBuffer);
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}
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AudioBuffer::~AudioBuffer()
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{
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NS_DROP_JS_OBJECTS(this, AudioBuffer);
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}
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bool
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AudioBuffer::InitializeBuffers(uint32_t aNumberOfChannels, JSContext* aJSContext)
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{
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if (!mChannels.SetCapacity(aNumberOfChannels)) {
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return false;
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}
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for (uint32_t i = 0; i < aNumberOfChannels; ++i) {
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JSObject* array = JS_NewFloat32Array(aJSContext, mLength);
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if (!array) {
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return false;
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}
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mChannels.AppendElement(array);
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}
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return true;
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}
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JSObject*
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AudioBuffer::WrapObject(JSContext* aCx, JSObject* aScope,
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bool* aTriedToWrap)
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{
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return AudioBufferBinding::Wrap(aCx, aScope, this, aTriedToWrap);
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}
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JSObject*
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AudioBuffer::GetChannelData(JSContext* aJSContext, uint32_t aChannel,
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ErrorResult& aRv) const
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{
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if (aChannel >= mChannels.Length()) {
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aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
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return nullptr;
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}
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return mChannels[aChannel];
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}
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}
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}
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