/*
 * Copyright 2022 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.
 */

 #include "VirtGpu.h"
 #include <cutils/log.h>

namespace {

static VirtGpuDevice* sDevice = nullptr;

}  // namespace

VirtGpuDevice* VirtGpuDevice::getInstance(enum VirtGpuCapset capset) {
    // If kCapsetNone is passed, we return a device that was created with any capset.
    // Otherwise, the created device's capset must match the requested capset.
    // We could support multiple capsets with a map of devices but that case isn't needed
    // currently, and with multiple devices it's unclear how to handle kCapsetNone.
    if (capset != kCapsetNone && sDevice && sDevice->capset() != capset) {
        ALOGE("Requested VirtGpuDevice capset %u, already created capset %u",
            capset, sDevice->capset());
        return nullptr;
    }
    if (!sDevice) {
        sDevice = createPlatformVirtGpuDevice(capset);
    }
    return sDevice;
}

void VirtGpuDevice::resetInstance() {
    if (sDevice) {
        delete sDevice;
        sDevice = nullptr;
    }
}

void VirtGpuDevice::setInstanceForTesting(VirtGpuDevice* device) {
    sDevice = device;
}