bool HwcLayerList::update(hwc_display_contents_1_t *list)
{
bool ret;
bool updateError = false;
log.v("HwcLayerList::update");
// basic check to make sure the consistance
if (!list) {
log.e("update: null layer list");
return false;
}
if (list->numHwLayers != mLayerCount ||
list->numHwLayers != mLayers.size()) {
log.e("update: update layer count doesn't match (%d, %d, %d)",
list->numHwLayers, mLayerCount, mLayers.size());
return false;
}
// update list
mList = list;
do {
updateError = false;
// update all layers, call each layer's update()
for (size_t i = 0; i < list->numHwLayers; i++) {
HwcLayer *hwcLayer = mLayers.itemAt(i);
if (!hwcLayer) {
log.e("update: no HWC layer for layer %d", i);
continue;
}
ret = hwcLayer->update(&list->hwLayers[i], mDisplayIndex);
if (ret == false) {
log.i("update: failed to update layer %d", i);
updateError = true;
// set layer to FB layer
hwcLayer->setType(HwcLayer::LAYER_FB);
// remove layer from overlay layer list
mOverlayLayers.remove(hwcLayer);
// add layer to FB layer list
mFBLayers.add(hwcLayer);
// revisit the overlay assignment.
revisit();
}
}
} while (updateError && mOverlayLayers.size());
return true;
}
void
CloningVisitor::visitArithmeticValueNode(const ArithmeticValueNode &expr)
{
expr.getLeft().visit(*this);
bool lhsConstVal = _constVal;
int lhsPriority = _priority;
std::unique_ptr<ValueNode> lhs(std::move(_valueNode));
revisit();
expr.getRight().visit(*this);
bool rhsConstVal = _constVal;
int rhsPriority = _priority;
std::unique_ptr<ValueNode> rhs(std::move(_valueNode));
setArithmeticValueNode(expr,
std::move(lhs), lhsPriority, lhsConstVal,
std::move(rhs), rhsPriority, rhsConstVal);
}
void
CloningVisitor::visitOrBranch(const Or &expr)
{
int priority = OrPriority;
expr.getLeft().visit(*this);
bool lhsConstVal = _constVal;
ResultSet lhsSet(_resultSet);
setNodeParentheses(priority);
std::unique_ptr<Node> lhs(std::move(_node));
revisit();
expr.getRight().visit(*this);
_constVal &= lhsConstVal;
_resultSet.calcOr(lhsSet);
setNodeParentheses(priority);
std::unique_ptr<Node> rhs(std::move(_node));
_priority = priority;
_node.reset(new Or(std::move(lhs), std::move(rhs), "or"));
};
/**
* This is the SOSI depart code for propagating a change upward
*/
void depart_internal(qc32s_node_t* first, int32_t n)
{
qc32s_node_t * curr = first;
while (true) {
// compute the min value of children
bool changed = revisit(curr, n);
// return if revisit do not change the current node
if (!changed)
return;
// Propagate the depart up to the parent
if (!curr->my_parent)
return;
curr = curr->my_parent;
}
}
void
CloningVisitor::visitComparison(const Compare &expr)
{
int priority = ComparePriority;
expr.getLeft().visit(*this);
bool lhsConstVal = _constVal;
setValueNodeParentheses(priority);
std::unique_ptr<ValueNode> lhs(std::move(_valueNode));
revisit();
expr.getRight().visit(*this);
_constVal &= lhsConstVal;
setValueNodeParentheses(priority);
std::unique_ptr<ValueNode> rhs(std::move(_valueNode));
const Operator &op(expr.getOperator());
_priority = priority;
_resultSet.fill(); // should be less if const
_node.reset(new Compare(std::move(lhs),
op,
std::move(rhs),
expr.getBucketIdFactory()));
};
void HwcLayerList::analyzeFrom(uint32_t index)
{
int freeSpriteCount = 0;
int freeOverlayCount = 0;
bool primaryAvailable = true;
int supportExtendVideo = 0;
IDisplayPlane *plane;
if (!mList || index >= mLayerCount)
return;
// load prop
HwcConfig::getInstance().extendVideo(supportExtendVideo);
freeSpriteCount = mDisplayPlaneManager.getFreeSpriteCount();
freeOverlayCount = mDisplayPlaneManager.getFreeOverlayCount();
// if no primary plane
if (!mPrimaryPlane)
primaryAvailable = false;
// if the number of layers > the number of all free planes
if (mLayerCount > (freeSpriteCount + freeOverlayCount + 1))
primaryAvailable = false;
// go through layer list from top to bottom
for (int i = index; i >= 0; i--) {
hwc_layer_1_t *layer = &mList->hwLayers[i];
if (!layer)
continue;
// new hwc layer
HwcLayer *hwcLayer = new HwcLayer(i, layer);
if (!hwcLayer) {
log.e("failed to allocate hwc layer");
continue;
}
// insert layer to layers
mLayers.add(hwcLayer);
// if a HWC_FRAMEBUFFER_TARGET layer, save it to the last
if (layer->compositionType & HWC_FRAMEBUFFER_TARGET) {
mFramebufferTarget = hwcLayer;
continue;
}
// check whether the layer can be handled by sprite plane
if (freeSpriteCount) {
plane = mDisplayPlaneManager.getDummySpritePlane();
if (!plane)
log.e("failed to get dummy sprite plane");
else if (check(*plane, *layer)) {
log.v("sprite check passed for layer %d", i);
plane = mDisplayPlaneManager.getSpritePlane();
if (plane) {
// attach plane to hwc layer
hwcLayer->attachPlane(plane);
// set the layer type to sprite
hwcLayer->setType(HwcLayer::LAYER_SPRITE);
}
}
}
// check whether the layer can be handled by overlay plane
if (freeOverlayCount) {
plane = mDisplayPlaneManager.getDummyOverlayPlane();
if (!plane) {
log.e("failed to get dummy sprite plane");
} else if (check(*plane, *layer)) {
log.v("overlay check passed for layer %d", i);
plane = mDisplayPlaneManager.getOverlayPlane();
if (plane) {
// attach plane to hwc layer
hwcLayer->attachPlane(plane);
// set the layer type to overlay
hwcLayer->setType(HwcLayer::LAYER_OVERLAY);
}
// check wheter we are supporting extend video mode
if (supportExtendVideo) {
bool extConnected =
Drm::getInstance().outputConnected(Drm::OUTPUT_HDMI);
if (extConnected && plane && !mDisplayIndex) {
hwcLayer->detachPlane();
mDisplayPlaneManager.putOverlayPlane(*plane);
}
hwcLayer->setType(HwcLayer::LAYER_OVERLAY);
}
}
}
// if still FB layer
if (!hwcLayer->getType())
mFBLayers.add(hwcLayer);
else
mOverlayLayers.add(hwcLayer);
} // for (ssize_t i = index; i >= 0; i--)
// revisit the plane assignments
revisit();
}