Camera service: Add skeleton support for camera2 devices.

- Add Camera2Client, which maps the current android.hardware.Camera
  API to the new camera2 semantics
- Add Camera2Device, a C++ wrapper for the HAL camera 2 device

No functionality besides create/destroy; all client methods return
error or null.

Bug: 6243944
Change-Id: I6bd5136fa1efd8279b8cd2d9847d9b0bb2862294

1 files changed, 66 insertions, 0 deletions

diff --git a/services/camera/libcameraservice/Camera2Device.cpp b/services/camera/libcameraservice/Camera2Device.cpp
new file mode 100644
index 0000000..ff5b057
--- /dev/null
+++ b/services/camera/libcameraservice/Camera2Device.cpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Camera2Device"
+//#define LOG_NDEBUG 0
+
+#include <utils/Log.h>
+#include "Camera2Device.h"
+
+namespace android {
+
+Camera2Device::Camera2Device(const char *name):
+        mName(name),
+        mDevice(NULL)
+{
+
+}
+
+Camera2Device::~Camera2Device()
+{
+    if (mDevice) {
+        status_t res;
+        res = mDevice->common.close(&mDevice->common);
+        if (res != OK) {
+            ALOGE("Could not close camera2 %s: %s (%d)",
+                    mName, strerror(-res), res);
+        }
+    }
+}
+
+status_t Camera2Device::initialize(hw_module_t *module)
+{
+    status_t res;
+    res = module->methods->open(module, mName,
+            reinterpret_cast<hw_device_t**>(&mDevice));
+
+    if (res != OK) {
+        ALOGE("Could not open camera %s: %s (%d)", mName, strerror(-res), res);
+        return res;
+    }
+
+    if (mDevice->common.version != CAMERA_DEVICE_API_VERSION_2_0) {
+        ALOGE("Could not open camera %s: "
+                "Camera device is not version 2.0, reports %x instead",
+                mName, mDevice->common.version);
+        return BAD_VALUE;
+    }
+
+    return OK;
+}
+
+
+}; // namespace android