Add initialize method to CameraHardwareInterface

Add intialize() method to CameraHardwareInterface so we can
return a proper error value to CameraService if open of camera
hardware module fails.

b/5405235

Change-Id: I09c627034ddd22a5753c5163392c4fcff301e0b9
Signed-off-by: Tyler Luu <tluu@ti.com>
Signed-off-by: Iliyan Malchev <malchev@google.com>

2 files changed, 28 insertions, 14 deletions

diff --git a/services/camera/libcameraservice/CameraHardwareInterface.h b/services/camera/libcameraservice/CameraHardwareInterface.h
index 31544b3..c3ced4c 100644
--- a/services/camera/libcameraservice/CameraHardwareInterface.h
+++ b/services/camera/libcameraservice/CameraHardwareInterface.h
@@ -80,24 +80,33 @@ typedef void (*data_callback_timestamp)(nsecs_t timestamp,
 
 class CameraHardwareInterface : public virtual RefBase {
 public:
-    CameraHardwareInterface(hw_module_t *module, const char *name)
+    CameraHardwareInterface(const char *name)
     {
         mDevice = 0;
         mName = name;
-        LOGI("Opening camera %s, this %p", name, this);
-        int rc = module->methods->open(module, name,
-                                       (hw_device_t **)&mDevice);
-        if (rc != OK)
-            LOGE("Could not open camera %s: %d", name, rc);
-        initHalPreviewWindow();
     }
 
     ~CameraHardwareInterface()
     {
         LOGI("Destroying camera %s", mName.string());
-        int rc = mDevice->common.close(&mDevice->common);
-        if (rc != OK)
-            LOGE("Could not close camera %s: %d", mName.string(), rc);
+        if(mDevice) {
+            int rc = mDevice->common.close(&mDevice->common);
+            if (rc != OK)
+                LOGE("Could not close camera %s: %d", mName.string(), rc);
+        }
+    }
+
+    status_t initialize(hw_module_t *module)
+    {
+        LOGI("Opening camera %s", mName.string());
+        int rc = module->methods->open(module, mName.string(),
+                                       (hw_device_t **)&mDevice);
+        if (rc != OK) {
+            LOGE("Could not open camera %s: %d", mName.string(), rc);
+            return rc;
+        }
+        initHalPreviewWindow();
+        return rc;
     }
 
     /** Set the ANativeWindow to which preview frames are sent */
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index 05e7bcf..f306e4a 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -133,6 +133,8 @@ status_t CameraService::getCameraInfo(int cameraId,
 sp<ICamera> CameraService::connect(
         const sp<ICameraClient>& cameraClient, int cameraId) {
     int callingPid = getCallingPid();
+    sp<CameraHardwareInterface> hardware = NULL;
+
     LOG1("CameraService::connect E (pid %d, id %d)", callingPid, cameraId);
 
     if (!mModule) {
@@ -187,10 +189,13 @@ sp<ICamera> CameraService::connect(
     char camera_device_name[10];
     snprintf(camera_device_name, sizeof(camera_device_name), "%d", cameraId);
 
-    client = new Client(this, cameraClient,
-                new CameraHardwareInterface(&mModule->common,
-                                            camera_device_name),
-                cameraId, info.facing, callingPid);
+    hardware = new CameraHardwareInterface(camera_device_name);
+    if (hardware->initialize(&mModule->common) != OK) {
+        hardware.clear();
+        return NULL;
+    }
+
+    client = new Client(this, cameraClient, hardware, cameraId, info.facing, callingPid);
     mClient[cameraId] = client;
     LOG1("CameraService::connect X");
     return client;