void
AudioBuffer::CopyToChannel(JSContext* aJSContext, const Float32Array& aSource,
uint32_t aChannelNumber, uint32_t aStartInChannel,
ErrorResult& aRv)
{
uint32_t length = aSource.Length();
if (aChannelNumber >= NumberOfChannels() ||
aStartInChannel + length >= mLength) {
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
return;
}
if (!mSharedChannels && JS_GetTypedArrayLength(mJSChannels[aChannelNumber]) != mLength) {
// The array was probably neutered
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
return;
}
if (!RestoreJSChannelData(aJSContext)) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
PodCopy(JS_GetFloat32ArrayData(mJSChannels[aChannelNumber]) + aStartInChannel,
aSource.Data(), length);
}
void
AudioBuffer::CopyToChannel(JSContext* aJSContext, const Float32Array& aSource,
uint32_t aChannelNumber, uint32_t aStartInChannel,
ErrorResult& aRv)
{
aSource.ComputeLengthAndData();
uint32_t length = aSource.Length();
CheckedInt<uint32_t> end = aStartInChannel;
end += length;
if (aChannelNumber >= NumberOfChannels() ||
!end.isValid() || end.value() > mLength) {
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
return;
}
if (!mSharedChannels && JS_GetTypedArrayLength(mJSChannels[aChannelNumber]) != mLength) {
// The array was probably neutered
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
return;
}
if (!RestoreJSChannelData(aJSContext)) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
PodMove(JS_GetFloat32ArrayData(mJSChannels[aChannelNumber]) + aStartInChannel,
aSource.Data(), length);
}
JSObject*
AudioBuffer::GetChannelData(JSContext* aJSContext, uint32_t aChannel,
ErrorResult& aRv)
{
if (aChannel >= NumberOfChannels()) {
aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
return nullptr;
}
if (!RestoreJSChannelData(aJSContext)) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return nullptr;
}
return mJSChannels[aChannel];
}
void
AudioBuffer::GetChannelData(JSContext* aJSContext, uint32_t aChannel,
JS::MutableHandle<JSObject*> aRetval,
ErrorResult& aRv)
{
if (aChannel >= NumberOfChannels()) {
aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
return;
}
if (!RestoreJSChannelData(aJSContext)) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
aRetval.set(mJSChannels[aChannel]);
}
bool
AudioBuffer::SetChannelDataFromArrayBufferContents(JSContext* aJSContext,
uint32_t aChannel,
void* aContents)
{
if (!RestoreJSChannelData(aJSContext)) {
return false;
}
MOZ_ASSERT(aChannel < NumberOfChannels());
JS::RootedObject arrayBuffer(aJSContext, JS_NewArrayBufferWithContents(aJSContext, aContents));
if (!arrayBuffer) {
return false;
}
mJSChannels[aChannel] = JS_NewFloat32ArrayWithBuffer(aJSContext, arrayBuffer,
0, -1);
if (!mJSChannels[aChannel]) {
return false;
}
MOZ_ASSERT(mLength == JS_GetTypedArrayLength(mJSChannels[aChannel]));
return true;
}
void
AudioBuffer::CopyToChannel(JSContext* aJSContext, const Float32Array& aSource,
uint32_t aChannelNumber, uint32_t aStartInChannel,
ErrorResult& aRv)
{
aSource.ComputeLengthAndData();
uint32_t length = aSource.Length();
CheckedInt<uint32_t> end = aStartInChannel;
end += length;
if (aChannelNumber >= NumberOfChannels() ||
!end.isValid() || end.value() > mLength) {
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
return;
}
if (!RestoreJSChannelData(aJSContext)) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
JS::AutoCheckCannotGC nogc;
JSObject* channelArray = mJSChannels[aChannelNumber];
if (JS_GetTypedArrayLength(channelArray) != mLength) {
// The array's buffer was detached.
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
return;
}
bool isShared = false;
float* channelData = JS_GetFloat32ArrayData(channelArray, &isShared, nogc);
// The channelData arrays should all have originated in
// RestoreJSChannelData, where they are created unshared.
MOZ_ASSERT(!isShared);
PodMove(channelData + aStartInChannel, aSource.Data(), length);
}
