Divide HAL so file by each sensor

Change-Id: I13af2315223a2730876983b587153bd4d75de346
Signed-off-by: Yunmi Ha <yunmi.ha@samsung.com>

diff --git a/src/hal-api-sensor.cpp b/src/hal-api-sensor.cpp
index 01683b7..7dbbd99 100644 (file)
--- a/src/hal-api-sensor.cpp
+++ b/src/hal-api-sensor.cpp
@@ -13,19 +13,23 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+#include <stdlib.h>
+#include <vector>
 #include <dlfcn.h>
 #include <hal/hal-common.h>
 
 #include "hal-api-sensor-log.h"
 #include "hal-sensor-interface.h"
+#include "hal-sensor-types.h"
 #include "hal-sensor.h"
 
 #ifndef EXPORT
 #define EXPORT __attribute__((visibility("default")))
 #endif
 
-static hal_backend_sensor_funcs *hal_sensor_funcs = NULL;
+static hal_backend_sensor_funcs **hal_sensor_funcs = NULL;
+static char **hal_sensor_names = NULL;
+static int hal_sensor_count = 0;
 /*
 -1 : failed to initialize
 0  : not initialized
@@ -33,33 +37,100 @@ static hal_backend_sensor_funcs *hal_sensor_funcs = NULL;
 */
 static int hal_initialized = 0;
 
+static std::vector<sensor_device_t> hal_backend_devs;
+
+#define FREE(x)        \
+       do { if (x) { free(x); x = NULL; } } while(0)
+
 EXPORT
 int hal_sensor_get_backend(void)
 {
-       int ret;
+       int ret_getnames, ret_getbackend;
+       int i;
+       int loaded_backend = 0;
 
        if (hal_sensor_funcs)
                return 0;
 
-       ret = hal_common_get_backend(HAL_MODULE_SENSOR, (void **)&hal_sensor_funcs);
-       if (ret < 0) {
-               _E("Failed to get backend");
-               hal_initialized = -1;
+       hal_sensor_count = hal_common_get_backend_count(HAL_MODULE_SENSOR);
+       if (hal_sensor_count < 0) {
+               _E("Failed to get backend count.");
+               return -ENODEV;
+       } else if (hal_sensor_count == 0) {
+               _E("There is no hal-backend-sensor library.");
+               return -ENODEV;
+       }
+
+       hal_sensor_names = (char **)malloc(sizeof(char *) * hal_sensor_count);
+       if (!hal_sensor_names) {
+               _E("Failed to allocate memory.");
+               hal_sensor_count = 0;
                return -ENODEV;
        }
 
+       for (i = 0; i < hal_sensor_count; i++) {
+               hal_sensor_names[i] = (char *)malloc(sizeof(char) * 256);
+               if (!hal_sensor_names[i]) {
+                       _E("Failed to allocate memory.");
+                       goto FREE_MEMORY;
+               }
+       }
+
+       ret_getnames = hal_common_get_backend_library_names(HAL_MODULE_SENSOR, hal_sensor_names, hal_sensor_count);
+       if (ret_getnames < 0) {
+               _E("Failed to get backend library names.");
+               goto FREE_MEMORY;
+       }
+
+       hal_sensor_funcs = (hal_backend_sensor_funcs **)malloc(sizeof(hal_backend_sensor_funcs *) * hal_sensor_count);
+       if (!hal_sensor_funcs) {
+               _E("Failed to allocate memory.");
+               goto FREE_MEMORY;
+       }
+
+       for(i = 0; i < hal_sensor_count; i++) {
+               ret_getbackend = hal_common_get_backend_with_library_name(HAL_MODULE_SENSOR, (void **)&hal_sensor_funcs[i], hal_sensor_names[i]);
+               if (ret_getbackend < 0) {
+                       _E("Failed to get backend (%s)", hal_sensor_names[i]);
+               } else
+                       loaded_backend++;
+       }
+
+       if (loaded_backend == 0) {
+               FREE(hal_sensor_funcs);
+               goto FREE_MEMORY;
+       }
+
        hal_initialized = 1;
        return 0;
+
+FREE_MEMORY:
+       for(i = 0; i < hal_sensor_count; i++)
+               FREE(hal_sensor_names[i]);
+
+       FREE(hal_sensor_names);
+
+       hal_sensor_count = 0;
+       hal_initialized = -1;
+       return -ENODEV;
 }
 
 EXPORT
 int hal_sensor_put_backend(void)
 {
+       int i = 0;
        if (!hal_sensor_funcs)
                return -ENODEV;
 
-       hal_common_put_backend(HAL_MODULE_SENSOR, (void *)hal_sensor_funcs);
-       hal_sensor_funcs = NULL;
+       for (i = 0; i < hal_sensor_count; i++) {
+               if (hal_sensor_funcs[i]) {
+                       hal_common_put_backend_with_library_name(HAL_MODULE_SENSOR, (void *)hal_sensor_funcs[i], hal_sensor_names[i]);
+               }
+               FREE(hal_sensor_names[i]);
+       }
+       FREE(hal_sensor_names);
+       FREE(hal_sensor_funcs);
+
        hal_initialized = 0;
 
        return 0;
@@ -68,15 +139,31 @@ int hal_sensor_put_backend(void)
 EXPORT
 int hal_sensor_create(sensor_device_t **devices)
 {
-       int ret;
+       int ret, ret_create;
+       int i, j;
+       sensor_device_t *device;
 
        if (!hal_sensor_funcs && !hal_initialized) {
                if ((ret = hal_sensor_get_backend()) < 0)
                        return ret;
        }
 
-       if (!hal_sensor_funcs || !hal_sensor_funcs->create)
+       if (!hal_sensor_funcs || (hal_sensor_count == 0))
                return -ENODEV;
 
-       return hal_sensor_funcs->create(devices);
+       if (hal_backend_devs.empty()) {
+               for (i = 0; i < hal_sensor_count; i++) {
+                       if (!hal_sensor_funcs[i] || !hal_sensor_funcs[i]->create)
+                               continue;
+
+                       ret_create = hal_sensor_funcs[i]->create(&device);
+                       for (j = 0; j < ret_create; j++)
+                       {
+                               hal_backend_devs.push_back(device[j]);
+                       }
+               }
+       }
+
+       *devices = &hal_backend_devs[0];
+       return hal_backend_devs.size();
 }