// Helper for weighted regions.
nsresult
CameraControlImpl::Set(JSContext* aCx, uint32_t aKey, const JS::Value& aValue, uint32_t aLimit)
{
if (aLimit == 0) {
DOM_CAMERA_LOGI("%s:%d : aLimit = 0, nothing to do\n", __func__, __LINE__);
return NS_OK;
}
if (!aValue.isObject()) {
return NS_ERROR_INVALID_ARG;
}
uint32_t length = 0;
JSObject* regions = &aValue.toObject();
if (!JS_GetArrayLength(aCx, regions, &length)) {
return NS_ERROR_FAILURE;
}
DOM_CAMERA_LOGI("%s:%d : got %d regions (limited to %d)\n", __func__, __LINE__, length, aLimit);
if (length > aLimit) {
length = aLimit;
}
nsTArray<CameraRegion> regionArray;
regionArray.SetCapacity(length);
for (uint32_t i = 0; i < length; ++i) {
JS::Value v;
if (!JS_GetElement(aCx, regions, i, &v)) {
return NS_ERROR_FAILURE;
}
CameraRegion* r = regionArray.AppendElement();
/**
* These are the default values. We can remove these when the xpidl
* dictionary parser gains the ability to grok default values.
*/
r->top = -1000;
r->left = -1000;
r->bottom = 1000;
r->right = 1000;
r->weight = 1000;
nsresult rv = r->Init(aCx, &v);
NS_ENSURE_SUCCESS(rv, rv);
DOM_CAMERA_LOGI("region %d: top=%d, left=%d, bottom=%d, right=%d, weight=%d\n",
i,
r->top,
r->left,
r->bottom,
r->right,
r->weight
);
}
SetParameter(aKey, regionArray);
return NS_OK;
}
// JS-to-native helpers
// Setter for weighted regions: { top, bottom, left, right, weight }
nsresult
nsDOMCameraControl::Set(JSContext* aCx, uint32_t aKey, const JS::Value& aValue, uint32_t aLimit)
{
if (aLimit == 0) {
DOM_CAMERA_LOGI("%s:%d : aLimit = 0, nothing to do\n", __func__, __LINE__);
return NS_OK;
}
if (!aValue.isObject()) {
return NS_ERROR_INVALID_ARG;
}
uint32_t length = 0;
JS::Rooted<JSObject*> regions(aCx, &aValue.toObject());
if (!JS_GetArrayLength(aCx, regions, &length)) {
return NS_ERROR_FAILURE;
}
DOM_CAMERA_LOGI("%s:%d : got %d regions (limited to %d)\n", __func__, __LINE__, length, aLimit);
if (length > aLimit) {
length = aLimit;
}
nsTArray<ICameraControl::Region> regionArray;
regionArray.SetCapacity(length);
for (uint32_t i = 0; i < length; ++i) {
JS::Rooted<JS::Value> v(aCx);
if (!JS_GetElement(aCx, regions, i, &v)) {
return NS_ERROR_FAILURE;
}
CameraRegion region;
if (!region.Init(aCx, v)) {
return NS_ERROR_FAILURE;
}
ICameraControl::Region* r = regionArray.AppendElement();
r->top = region.mTop;
r->left = region.mLeft;
r->bottom = region.mBottom;
r->right = region.mRight;
r->weight = region.mWeight;
DOM_CAMERA_LOGI("region %d: top=%d, left=%d, bottom=%d, right=%d, weight=%u\n",
i,
r->top,
r->left,
r->bottom,
r->right,
r->weight
);
}
return mCameraControl->Set(aKey, regionArray);
}