1 /*
2 * Copyright 2024, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "drmhwc"
18 #define ATRACE_TAG (ATRACE_TAG_GRAPHICS | ATRACE_TAG_HAL)
19
20 #include <android/binder_manager.h>
21 #include <android/binder_process.h>
22 #include <sched.h>
23
24 #include "Composer.h"
25 #include "utils/log.h"
26
27 using aidl::android::hardware::graphics::composer3::impl::Composer;
28
main(int,char * argv[])29 int main(int /*argc*/, char* argv[]) {
30 (void)argv;
31 ALOGI("hwc3-drm starting up");
32
33 // same as SF main thread
34 struct sched_param param = {0};
35 param.sched_priority = 2;
36 if (sched_setscheduler(0, SCHED_FIFO | SCHED_RESET_ON_FORK, ¶m) != 0) {
37 ALOGE("Couldn't set SCHED_FIFO: %d", errno);
38 }
39
40 auto composer = ndk::SharedRefBase::make<Composer>();
41 if (!composer) {
42 ALOGE("Failed to create composer");
43 return -ENOMEM;
44 }
45
46 const std::string instance = std::string() + Composer::descriptor +
47 "/default";
48 ALOGI("HWC3 service name %s", instance.c_str());
49 #if __ANDROID_API__ >= 34
50 auto status = AServiceManager_addServiceWithFlags(
51 composer->asBinder().get(), instance.c_str(),
52 AServiceManager_AddServiceFlag::ADD_SERVICE_ALLOW_ISOLATED);
53 #else
54 auto status = AServiceManager_addService(composer->asBinder().get(),
55 instance.c_str());
56 #endif
57 if (status != STATUS_OK) {
58 ALOGE("Failed to register service. Error %d", (int)status);
59 return -EINVAL;
60 }
61
62 ABinderProcess_joinThreadPool();
63 return EXIT_FAILURE; // should not reach
64 }
65