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112 lines
3.2 KiB
112 lines
3.2 KiB
/* |
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* Copyright (C) 2018 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-resource-manager" |
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#include "resourcemanager.h" |
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#include <cutils/properties.h> |
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#include <log/log.h> |
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#include <sstream> |
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#include <string> |
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namespace android { |
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ResourceManager::ResourceManager() : num_displays_(0), gralloc_(NULL) { |
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} |
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int ResourceManager::Init() { |
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char path_pattern[PROPERTY_VALUE_MAX]; |
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// Could be a valid path or it can have at the end of it the wildcard % |
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// which means that it will try open all devices until an error is met. |
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int path_len = property_get("hwc.drm.device", path_pattern, "/dev/dri/card0"); |
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int ret = 0; |
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if (path_pattern[path_len - 1] != '%') { |
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ret = AddDrmDevice(std::string(path_pattern)); |
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} else { |
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path_pattern[path_len - 1] = '\0'; |
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for (int idx = 0; !ret; ++idx) { |
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std::ostringstream path; |
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path << path_pattern << idx; |
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ret = AddDrmDevice(path.str()); |
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} |
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} |
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if (!num_displays_) { |
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ALOGE("Failed to initialize any displays"); |
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return ret ? -EINVAL : ret; |
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} |
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return hw_get_module(GRALLOC_HARDWARE_MODULE_ID, |
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(const hw_module_t **)&gralloc_); |
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} |
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int ResourceManager::AddDrmDevice(std::string path) { |
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std::unique_ptr<DrmDevice> drm = std::make_unique<DrmDevice>(); |
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int displays_added, ret; |
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std::tie(ret, displays_added) = drm->Init(path.c_str(), num_displays_); |
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if (ret) |
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return ret; |
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std::shared_ptr<Importer> importer; |
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importer.reset(Importer::CreateInstance(drm.get())); |
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if (!importer) { |
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ALOGE("Failed to create importer instance"); |
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return -ENODEV; |
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} |
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importers_.push_back(importer); |
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drms_.push_back(std::move(drm)); |
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num_displays_ += displays_added; |
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return ret; |
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} |
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DrmConnector *ResourceManager::AvailableWritebackConnector(int display) { |
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DrmDevice *drm_device = GetDrmDevice(display); |
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DrmConnector *writeback_conn = NULL; |
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if (drm_device) { |
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writeback_conn = drm_device->AvailableWritebackConnector(display); |
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if (writeback_conn) |
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return writeback_conn; |
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} |
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for (auto &drm : drms_) { |
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if (drm.get() == drm_device) |
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continue; |
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writeback_conn = drm->AvailableWritebackConnector(display); |
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if (writeback_conn) |
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return writeback_conn; |
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} |
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return writeback_conn; |
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} |
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DrmDevice *ResourceManager::GetDrmDevice(int display) { |
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for (auto &drm : drms_) { |
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if (drm->HandlesDisplay(display)) |
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return drm.get(); |
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} |
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return NULL; |
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} |
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std::shared_ptr<Importer> ResourceManager::GetImporter(int display) { |
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for (unsigned int i = 0; i < drms_.size(); i++) { |
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if (drms_[i]->HandlesDisplay(display)) |
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return importers_[i]; |
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} |
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return NULL; |
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} |
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const gralloc_module_t *ResourceManager::gralloc() { |
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return gralloc_; |
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} |
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} // namespace android
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