1 #define LOG_TAG "SensorClient" 2 #include <private/dvr/sensor_client.h> 3 4 #include <log/log.h> 5 #include <poll.h> 6 7 #include <pdx/default_transport/client_channel_factory.h> 8 #include <private/dvr/sensor-ipc.h> 9 10 using android::pdx::Transaction; 11 12 namespace android { 13 namespace dvr { 14 15 SensorClient::SensorClient(int sensor_type) 16 : BASE(pdx::default_transport::ClientChannelFactory::Create( 17 DVR_SENSOR_SERVICE_CLIENT)), 18 sensor_type_(sensor_type) {} 19 20 SensorClient::~SensorClient() {} 21 22 int SensorClient::StartSensor() { 23 Transaction trans{*this}; 24 auto status = trans.Send<int>(DVR_SENSOR_START, &sensor_type_, 25 sizeof(sensor_type_), nullptr, 0); 26 ALOGE_IF(!status, "startSensor() failed because: %s\n", 27 status.GetErrorMessage().c_str()); 28 return ReturnStatusOrError(status); 29 } 30 31 int SensorClient::StopSensor() { 32 Transaction trans{*this}; 33 auto status = trans.Send<int>(DVR_SENSOR_STOP); 34 ALOGE_IF(!status, "stopSensor() failed because: %s\n", 35 status.GetErrorMessage().c_str()); 36 return ReturnStatusOrError(status); 37 } 38 39 int SensorClient::Poll(sensors_event_t* events, int max_events) { 40 int num_events = 0; 41 struct iovec rvec[] = { 42 {.iov_base = &num_events, .iov_len = sizeof(int)}, 43 {.iov_base = events, .iov_len = max_events * sizeof(sensors_event_t)}, 44 }; 45 Transaction trans{*this}; 46 auto status = trans.SendVector<int>(DVR_SENSOR_POLL, nullptr, rvec); 47 ALOGE_IF(!status, "Sensor poll() failed because: %s\n", 48 status.GetErrorMessage().c_str()); 49 return !status ? -status.error() : num_events; 50 } 51 52 } // namespace dvr 53 } // namespace android 54 55 // Entrypoints to simplify using the library when programmatically dynamicly 56 // loading it. 57 // Allows us to call this library without linking it, as, for instance, 58 // when compiling GVR in Google3. 59 // NOTE(segal): It's kind of a hack. 60 61 extern "C" uint64_t dvrStartSensor(int type) { 62 android::dvr::SensorClient* service = 63 android::dvr::SensorClient::Create(type).release(); 64 service->StartSensor(); 65 return (uint64_t)service; 66 } 67 68 extern "C" void dvrStopSensor(uint64_t service) { 69 android::dvr::SensorClient* iss = 70 reinterpret_cast<android::dvr::SensorClient*>(service); 71 iss->StopSensor(); 72 delete iss; 73 } 74 75 extern "C" int dvrPollSensor(uint64_t service, int max_count, 76 sensors_event_t* events) { 77 return reinterpret_cast<android::dvr::SensorClient*>(service)->Poll( 78 events, max_count); 79 } 80
