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/*
* Copyright (C) 2015 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-drm-display-composition"
#include "DrmDisplayComposition.h"
#include <sync/sync.h>
#include <xf86drmMode.h>
#include <algorithm>
#include <cstdlib>
#include <unordered_set>
#include "DrmDisplayCompositor.h"
#include "Planner.h"
#include "drm/DrmDevice.h"
#include "utils/log.h"
namespace android {
DrmDisplayComposition::DrmDisplayComposition(DrmCrtc *crtc)
: crtc_(crtc) // Can be NULL if we haven't modeset yet
{
}
int DrmDisplayComposition::SetLayers(DrmHwcLayer *layers, size_t num_layers) {
for (size_t layer_index = 0; layer_index < num_layers; layer_index++) {
layers_.emplace_back(std::move(layers[layer_index]));
}
return 0;
}
int DrmDisplayComposition::AddPlaneComposition(DrmCompositionPlane plane) {
composition_planes_.emplace_back(std::move(plane));
return 0;
}
int DrmDisplayComposition::Plan(std::vector<DrmPlane *> *primary_planes,
std::vector<DrmPlane *> *overlay_planes) {
std::map<size_t, DrmHwcLayer *> to_composite;
for (size_t i = 0; i < layers_.size(); ++i)
to_composite.emplace(std::make_pair(i, &layers_[i]));
int ret = 0;
std::tie(ret, composition_planes_) = Planner::ProvisionPlanes(to_composite,
crtc_,
primary_planes,
overlay_planes);
if (ret) {
ALOGV("Planner failed provisioning planes ret=%d", ret);
return ret;
}
// Remove the planes we used from the pool before returning. This ensures they
// won't be reused by another display in the composition.
for (auto &i : composition_planes_) {
if (!i.plane())
continue;
std::vector<DrmPlane *> *container = nullptr;
if (i.plane()->GetType() == DRM_PLANE_TYPE_PRIMARY)
container = primary_planes;
else
container = overlay_planes;
for (auto j = container->begin(); j != container->end(); ++j) {
if (*j == i.plane()) {
container->erase(j);
break;
}
}
}
return 0;
}
} // namespace android
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