void
AudioContext::DecodeAudioData(const ArrayBuffer& aBuffer,
DecodeSuccessCallback& aSuccessCallback,
const Optional<OwningNonNull<DecodeErrorCallback> >& aFailureCallback)
{
AutoJSAPI jsapi;
jsapi.Init();
JSContext* cx = jsapi.cx();
JSAutoCompartment ac(cx, aBuffer.Obj());
aBuffer.ComputeLengthAndData();
// Neuter the array buffer
size_t length = aBuffer.Length();
JS::RootedObject obj(cx, aBuffer.Obj());
uint8_t* data = static_cast<uint8_t*>(JS_StealArrayBufferContents(cx, obj));
// Sniff the content of the media.
// Failed type sniffing will be handled by AsyncDecodeMedia.
nsAutoCString contentType;
NS_SniffContent(NS_DATA_SNIFFER_CATEGORY, nullptr, data, length, contentType);
nsRefPtr<DecodeErrorCallback> failureCallback;
if (aFailureCallback.WasPassed()) {
failureCallback = &aFailureCallback.Value();
}
nsRefPtr<WebAudioDecodeJob> job(
new WebAudioDecodeJob(contentType, this,
&aSuccessCallback, failureCallback));
mDecoder.AsyncDecodeMedia(contentType.get(), data, length, *job);
// Transfer the ownership to mDecodeJobs
mDecodeJobs.AppendElement(job);
}
already_AddRefed<Promise>
AudioContext::DecodeAudioData(const ArrayBuffer& aBuffer,
const Optional<OwningNonNull<DecodeSuccessCallback> >& aSuccessCallback,
const Optional<OwningNonNull<DecodeErrorCallback> >& aFailureCallback,
ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> parentObject = do_QueryInterface(GetParentObject());
RefPtr<Promise> promise;
AutoJSAPI jsapi;
jsapi.Init();
JSContext* cx = jsapi.cx();
JSAutoCompartment ac(cx, aBuffer.Obj());
promise = Promise::Create(parentObject, aRv);
if (aRv.Failed()) {
return nullptr;
}
aBuffer.ComputeLengthAndData();
if (aBuffer.IsShared()) {
// Throw if the object is mapping shared memory (must opt in).
aRv.ThrowTypeError<MSG_TYPEDARRAY_IS_SHARED>(NS_LITERAL_STRING("Argument of AudioContext.decodeAudioData"));
return nullptr;
}
// Detach the array buffer
size_t length = aBuffer.Length();
JS::RootedObject obj(cx, aBuffer.Obj());
uint8_t* data = static_cast<uint8_t*>(JS_StealArrayBufferContents(cx, obj));
// Sniff the content of the media.
// Failed type sniffing will be handled by AsyncDecodeWebAudio.
nsAutoCString contentType;
NS_SniffContent(NS_DATA_SNIFFER_CATEGORY, nullptr, data, length, contentType);
RefPtr<DecodeErrorCallback> failureCallback;
RefPtr<DecodeSuccessCallback> successCallback;
if (aFailureCallback.WasPassed()) {
failureCallback = &aFailureCallback.Value();
}
if (aSuccessCallback.WasPassed()) {
successCallback = &aSuccessCallback.Value();
}
RefPtr<WebAudioDecodeJob> job(
new WebAudioDecodeJob(contentType, this,
promise, successCallback, failureCallback));
AsyncDecodeWebAudio(contentType.get(), data, length, *job);
// Transfer the ownership to mDecodeJobs
mDecodeJobs.AppendElement(job.forget());
return promise.forget();
}
already_AddRefed<Promise>
AudioContext::DecodeAudioData(const ArrayBuffer& aBuffer,
const Optional<OwningNonNull<DecodeSuccessCallback> >& aSuccessCallback,
const Optional<OwningNonNull<DecodeErrorCallback> >& aFailureCallback)
{
ErrorResult rv;
nsCOMPtr<nsIGlobalObject> parentObject = do_QueryInterface(GetParentObject());
nsRefPtr<Promise> promise;
AutoJSAPI jsapi;
jsapi.Init();
JSContext* cx = jsapi.cx();
JSAutoCompartment ac(cx, aBuffer.Obj());
promise = Promise::Create(parentObject, rv);
if (rv.Failed()) {
return nullptr;
}
aBuffer.ComputeLengthAndData();
// Neuter the array buffer
size_t length = aBuffer.Length();
JS::RootedObject obj(cx, aBuffer.Obj());
uint8_t* data = static_cast<uint8_t*>(JS_StealArrayBufferContents(cx, obj));
// Sniff the content of the media.
// Failed type sniffing will be handled by AsyncDecodeMedia.
nsAutoCString contentType;
NS_SniffContent(NS_DATA_SNIFFER_CATEGORY, nullptr, data, length, contentType);
nsRefPtr<DecodeErrorCallback> failureCallback;
nsRefPtr<DecodeSuccessCallback> successCallback;
if (aFailureCallback.WasPassed()) {
failureCallback = &aFailureCallback.Value();
}
if (aSuccessCallback.WasPassed()) {
successCallback = &aSuccessCallback.Value();
}
nsRefPtr<WebAudioDecodeJob> job(
new WebAudioDecodeJob(contentType, this,
promise, successCallback, failureCallback));
mDecoder.AsyncDecodeMedia(contentType.get(), data, length, *job);
// Transfer the ownership to mDecodeJobs
mDecodeJobs.AppendElement(job.forget());
return promise.forget();
}
WebAudioDecodeJob::WebAudioDecodeJob(const nsACString& aContentType,
AudioContext* aContext,
const ArrayBuffer& aBuffer,
DecodeSuccessCallback* aSuccessCallback,
DecodeErrorCallback* aFailureCallback)
: mContentType(aContentType)
, mWriteIndex(0)
, mContext(aContext)
, mSuccessCallback(aSuccessCallback)
, mFailureCallback(aFailureCallback)
{
MOZ_ASSERT(aContext);
MOZ_ASSERT(NS_IsMainThread());
MOZ_COUNT_CTOR(WebAudioDecodeJob);
mArrayBuffer = aBuffer.Obj();
MOZ_ASSERT(aSuccessCallback ||
(!aSuccessCallback && !aFailureCallback),
"If a success callback is not passed, no failure callback should be passed either");
mozilla::HoldJSObjects(this);
}
