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      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 
     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