bool Hwcomposer::prepare(size_t numDisplays,
hwc_display_contents_1_t** displays)
{
bool ret = true;
//Mutex::Autolock _l(mLock);
log.v("prepare display count %d\n", numDisplays);
if (!initCheck())
return false;
if (!numDisplays || !displays) {
log.e("prepare: invalid parameters");
return false;
}
// disable reclaimed planes
if (mPlaneManager)
mPlaneManager->disableReclaimedPlanes();
// reclaim all allocated planes if possible
for (size_t i = 0; i < numDisplays; i++) {
IDisplayDevice *device = mDisplayDevices.itemAt(i);
if (!device) {
log.v("prepare: device %d doesn't exist", i);
continue;
}
if (!device->isConnected()) {
log.v("prepare: device %d is disconnected", i);
continue;
}
device->prePrepare(displays[i]);
}
for (size_t i = 0; i < numDisplays; i++) {
IDisplayDevice *device = mDisplayDevices.itemAt(i);
if (!device) {
log.v("prepare: device %d doesn't exist", i);
continue;
}
if (!device->isConnected()) {
log.v("prepare: device %d is disconnected", i);
continue;
}
ret = device->prepare(displays[i]);
if (ret == false) {
log.e("prepare: failed to do prepare for device %d", i);
continue;
}
}
return ret;
}
bool Hwcomposer::commit(size_t numDisplays,
hwc_display_contents_1_t **displays)
{
bool ret = true;
log.v("commit display count %d\n", numDisplays);
//Mutex::Autolock _l(mLock);
if (!initCheck())
return false;
if (!numDisplays || !displays) {
log.e("commit: invalid parameters");
return false;
}
void *hwContexts = getContexts();
int count = 0;
if (!hwContexts) {
log.e("Hwcomposer::commit: invalid hwContexts");
return false;
}
for (size_t i = 0; i < numDisplays; i++) {
IDisplayDevice *device = mDisplayDevices.itemAt(i);
if (!device) {
log.v("commit: device %d doesn't exist", i);
continue;
}
if (!device->isConnected()) {
log.v("commit: device %d is disconnected", i);
continue;
}
ret = device->commit(displays[i], hwContexts, count);
if (ret == false) {
log.e("commit: failed to do commit for device %d", i);
continue;
}
}
// commit hwContexts to hardware
ret = commitContexts(hwContexts, count);
if (ret == false) {
log.e("Hwcomposer::commit: failed to commit hwContexts");
return false;
}
return ret;
}