1 /*
2 **
3 ** Copyright 2016, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 **     http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17 
18 #include <android-base/logging.h>
19 
20 // from LOCAL_C_INCLUDES
21 #include "minijail.h"
22 
23 #include <binder/ProcessState.h>
24 #include <hidl/HidlTransportSupport.h>
25 #include <media/stagefright/omx/1.0/Omx.h>
26 #include <media/stagefright/omx/1.0/OmxStore.h>
27 
28 #include <media/CodecServiceRegistrant.h>
29 #include <dlfcn.h>
30 
31 using namespace android;
32 
33 // Must match location in Android.mk.
34 static const char kSystemSeccompPolicyPath[] =
35         "/system/etc/seccomp_policy/mediacodec.policy";
36 static const char kVendorSeccompPolicyPath[] =
37         "/vendor/etc/seccomp_policy/mediacodec.policy";
38 
main(int argc __unused,char ** argv)39 int main(int argc __unused, char** argv)
40 {
41     strcpy(argv[0], "media.codec");
42     LOG(INFO) << "mediacodecservice starting";
43     signal(SIGPIPE, SIG_IGN);
44     SetUpMinijail(kSystemSeccompPolicyPath, kVendorSeccompPolicyPath);
45 
46     android::ProcessState::initWithDriver("/dev/vndbinder");
47     android::ProcessState::self()->startThreadPool();
48 
49     ::android::hardware::configureRpcThreadpool(64, false);
50 
51     // Registration of customized codec services
52     void *registrantLib = dlopen(
53             "libmedia_codecserviceregistrant.so",
54             RTLD_NOW | RTLD_LOCAL);
55     if (registrantLib) {
56         RegisterCodecServicesFunc registerCodecServices =
57                 reinterpret_cast<RegisterCodecServicesFunc>(
58                 dlsym(registrantLib, "RegisterCodecServices"));
59         if (registerCodecServices) {
60             registerCodecServices();
61         } else {
62             LOG(WARNING) << "Cannot register additional services "
63                     "-- corrupted library.";
64         }
65     } else {
66         // Default codec services
67         using namespace ::android::hardware::media::omx::V1_0;
68         sp<IOmxStore> omxStore = new implementation::OmxStore();
69         if (omxStore == nullptr) {
70             LOG(ERROR) << "Cannot create IOmxStore HAL service.";
71         } else if (omxStore->registerAsService() != OK) {
72             LOG(ERROR) << "Cannot register IOmxStore HAL service.";
73         }
74         sp<IOmx> omx = new implementation::Omx();
75         if (omx == nullptr) {
76             LOG(ERROR) << "Cannot create IOmx HAL service.";
77         } else if (omx->registerAsService() != OK) {
78             LOG(ERROR) << "Cannot register IOmx HAL service.";
79         } else {
80             LOG(INFO) << "IOmx HAL service created.";
81         }
82     }
83 
84     ::android::hardware::joinRpcThreadpool();
85 }
86