/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "hwc-platform"
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#include "platform.h"
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#include "drmdevice.h"
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#include <log/log.h>
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namespace android {
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std::vector<DrmPlane *> Planner::GetUsablePlanes(
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DrmCrtc *crtc, std::vector<DrmPlane *> *primary_planes,
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std::vector<DrmPlane *> *overlay_planes) {
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std::vector<DrmPlane *> usable_planes;
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std::copy_if(primary_planes->begin(), primary_planes->end(),
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std::back_inserter(usable_planes),
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[=](DrmPlane *plane) { return plane->GetCrtcSupported(*crtc); });
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std::copy_if(overlay_planes->begin(), overlay_planes->end(),
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std::back_inserter(usable_planes),
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[=](DrmPlane *plane) { return plane->GetCrtcSupported(*crtc); });
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return usable_planes;
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}
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int Planner::PlanStage::ValidatePlane(DrmPlane *plane, DrmHwcLayer *layer) {
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int ret = 0;
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uint64_t blend;
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if ((plane->rotation_property().id() == 0) &&
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layer->transform != DrmHwcTransform::kIdentity) {
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ALOGE("Rotation is not supported on plane %d", plane->id());
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return -EINVAL;
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}
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if (plane->alpha_property().id() == 0 && layer->alpha != 0xffff) {
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ALOGE("Alpha is not supported on plane %d", plane->id());
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return -EINVAL;
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}
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if (plane->blend_property().id() == 0) {
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if ((layer->blending != DrmHwcBlending::kNone) &&
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(layer->blending != DrmHwcBlending::kPreMult)) {
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ALOGE("Blending is not supported on plane %d", plane->id());
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return -EINVAL;
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}
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} else {
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switch (layer->blending) {
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case DrmHwcBlending::kPreMult:
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std::tie(blend, ret) = plane->blend_property().GetEnumValueWithName(
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"Pre-multiplied");
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break;
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case DrmHwcBlending::kCoverage:
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std::tie(blend, ret) = plane->blend_property().GetEnumValueWithName(
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"Coverage");
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break;
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case DrmHwcBlending::kNone:
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default:
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std::tie(blend,
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ret) = plane->blend_property().GetEnumValueWithName("None");
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break;
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}
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if (ret)
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ALOGE("Expected a valid blend mode on plane %d", plane->id());
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}
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return ret;
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}
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std::tuple<int, std::vector<DrmCompositionPlane>> Planner::ProvisionPlanes(
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std::map<size_t, DrmHwcLayer *> &layers, DrmCrtc *crtc,
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std::vector<DrmPlane *> *primary_planes,
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std::vector<DrmPlane *> *overlay_planes) {
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std::vector<DrmCompositionPlane> composition;
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std::vector<DrmPlane *> planes = GetUsablePlanes(crtc, primary_planes,
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overlay_planes);
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if (planes.empty()) {
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ALOGE("Display %d has no usable planes", crtc->display());
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return std::make_tuple(-ENODEV, std::vector<DrmCompositionPlane>());
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}
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// Go through the provisioning stages and provision planes
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for (auto &i : stages_) {
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int ret = i->ProvisionPlanes(&composition, layers, crtc, &planes);
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if (ret) {
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ALOGE("Failed provision stage with ret %d", ret);
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return std::make_tuple(ret, std::vector<DrmCompositionPlane>());
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}
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}
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return std::make_tuple(0, std::move(composition));
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}
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int PlanStageProtected::ProvisionPlanes(
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std::vector<DrmCompositionPlane> *composition,
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std::map<size_t, DrmHwcLayer *> &layers, DrmCrtc *crtc,
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std::vector<DrmPlane *> *planes) {
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int ret;
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int protected_zorder = -1;
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for (auto i = layers.begin(); i != layers.end();) {
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if (!i->second->protected_usage()) {
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++i;
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continue;
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}
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ret = Emplace(composition, planes, DrmCompositionPlane::Type::kLayer, crtc,
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std::make_pair(i->first, i->second));
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if (ret) {
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ALOGE("Failed to dedicate protected layer! Dropping it.");
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return ret;
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}
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protected_zorder = i->first;
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i = layers.erase(i);
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}
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return 0;
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}
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int PlanStageGreedy::ProvisionPlanes(
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std::vector<DrmCompositionPlane> *composition,
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std::map<size_t, DrmHwcLayer *> &layers, DrmCrtc *crtc,
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std::vector<DrmPlane *> *planes) {
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// Fill up the remaining planes
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for (auto i = layers.begin(); i != layers.end(); i = layers.erase(i)) {
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int ret = Emplace(composition, planes, DrmCompositionPlane::Type::kLayer,
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crtc, std::make_pair(i->first, i->second));
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// We don't have any planes left
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if (ret == -ENOENT)
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break;
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else if (ret) {
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ALOGE("Failed to emplace layer %zu, dropping it", i->first);
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return ret;
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}
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}
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return 0;
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}
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} // namespace android
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