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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "hwc-platform"
#include "Planner.h"
#include <algorithm>
#include "drm/DrmDevice.h"
#include "utils/log.h"
namespace android {
std::vector<DrmPlane *> Planner::GetUsablePlanes(
DrmCrtc *crtc, std::vector<DrmPlane *> *primary_planes,
std::vector<DrmPlane *> *overlay_planes) {
std::vector<DrmPlane *> usable_planes;
std::copy_if(primary_planes->begin(), primary_planes->end(),
std::back_inserter(usable_planes),
[=](DrmPlane *plane) { return plane->IsCrtcSupported(*crtc); });
std::copy_if(overlay_planes->begin(), overlay_planes->end(),
std::back_inserter(usable_planes),
[=](DrmPlane *plane) { return plane->IsCrtcSupported(*crtc); });
return usable_planes;
}
std::tuple<int, std::vector<DrmCompositionPlane>> Planner::ProvisionPlanes(
std::map<size_t, DrmHwcLayer *> &layers, DrmCrtc *crtc,
std::vector<DrmPlane *> *primary_planes,
std::vector<DrmPlane *> *overlay_planes) {
std::vector<DrmCompositionPlane> composition;
std::vector<DrmPlane *> planes = GetUsablePlanes(crtc, primary_planes,
overlay_planes);
if (planes.empty()) {
ALOGE("Crtc %d has no usable planes", crtc->GetId());
return std::make_tuple(-ENODEV, std::vector<DrmCompositionPlane>());
}
// Go through the provisioning stages and provision planes
int ret = ProvisionPlanesInternal(&composition, layers, &planes);
if (ret != 0) {
ALOGV("Failed provision stage with ret %d", ret);
return std::make_tuple(ret, std::vector<DrmCompositionPlane>());
}
return std::make_tuple(0, std::move(composition));
}
int Planner::ProvisionPlanesInternal(
std::vector<DrmCompositionPlane> *composition,
std::map<size_t, DrmHwcLayer *> &layers, std::vector<DrmPlane *> *planes) {
// Fill up the remaining planes
for (auto i = layers.begin(); i != layers.end(); i = layers.erase(i)) {
int ret = Emplace(composition, planes, std::make_pair(i->first, i->second));
// We don't have any planes left
if (ret == -ENOENT)
break;
if (ret != 0) {
ALOGV("Failed to emplace layer %zu, dropping it", i->first);
return ret;
}
}
return 0;
}
} // namespace android
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