michael@0: /*
michael@0:  * Copyright (C) 2012-2014 Mozilla Foundation
michael@0:  *
michael@0:  * Licensed under the Apache License, Version 2.0 (the "License");
michael@0:  * you may not use this file except in compliance with the License.
michael@0:  * You may obtain a copy of the License at
michael@0:  *
michael@0:  *      http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing, software
michael@0:  * distributed under the License is distributed on an "AS IS" BASIS,
michael@0:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
michael@0:  * See the License for the specific language governing permissions and
michael@0:  * limitations under the License.
michael@0:  */
michael@0: 
michael@0: #include "ICameraControl.h"
michael@0: 
michael@0: #include <camera/Camera.h>
michael@0: 
michael@0: #include "CameraCommon.h"
michael@0: #include "GonkCameraControl.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: 
michael@0: // From ICameraControl, gonk-specific management functions
michael@0: nsresult
michael@0: ICameraControl::GetNumberOfCameras(int32_t& aDeviceCount)
michael@0: {
michael@0:   aDeviceCount = android::Camera::getNumberOfCameras();
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: ICameraControl::GetCameraName(uint32_t aDeviceNum, nsCString& aDeviceName)
michael@0: {
michael@0:   int32_t count = android::Camera::getNumberOfCameras();
michael@0:   int32_t deviceNum = static_cast<int32_t>(aDeviceNum);
michael@0: 
michael@0:   DOM_CAMERA_LOGI("GetCameraName : getNumberOfCameras() returned %d\n", count);
michael@0:   if (deviceNum < 0 || deviceNum > count) {
michael@0:     DOM_CAMERA_LOGE("GetCameraName : invalid device number (%u)\n", aDeviceNum);
michael@0:     return NS_ERROR_NOT_AVAILABLE;
michael@0:   }
michael@0: 
michael@0:   android::CameraInfo info;
michael@0:   int rv = android::Camera::getCameraInfo(deviceNum, &info);
michael@0:   if (rv != 0) {
michael@0:     DOM_CAMERA_LOGE("GetCameraName : get_camera_info(%d) failed: %d\n", deviceNum, rv);
michael@0:     return NS_ERROR_NOT_AVAILABLE;
michael@0:   }
michael@0: 
michael@0:   switch (info.facing) {
michael@0:     case CAMERA_FACING_BACK:
michael@0:       aDeviceName.Assign("back");
michael@0:       break;
michael@0: 
michael@0:     case CAMERA_FACING_FRONT:
michael@0:       aDeviceName.Assign("front");
michael@0:       break;
michael@0: 
michael@0:     default:
michael@0:       aDeviceName.Assign("extra-camera-");
michael@0:       aDeviceName.AppendInt(deviceNum);
michael@0:       break;
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: ICameraControl::GetListOfCameras(nsTArray<nsString>& aList)
michael@0: {
michael@0:   int32_t count = android::Camera::getNumberOfCameras();
michael@0:   DOM_CAMERA_LOGI("getListOfCameras : getNumberOfCameras() returned %d\n", count);
michael@0:   if (count <= 0) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   // Allocate 2 extra slots to reserve space for 'front' and 'back' cameras
michael@0:   // at the front of the array--we will collapse any empty slots below.
michael@0:   aList.SetLength(2);
michael@0:   uint32_t extraIdx = 2;
michael@0:   bool gotFront = false;
michael@0:   bool gotBack = false;
michael@0:   while (count--) {
michael@0:     nsCString cameraName;
michael@0:     nsresult result = GetCameraName(count, cameraName);
michael@0:     if (result != NS_OK) {
michael@0:       continue;
michael@0:     }
michael@0: 
michael@0:     // The first camera we find named 'back' gets slot 0; and the first
michael@0:     // we find named 'front' gets slot 1.  All others appear after these.
michael@0:     if (cameraName.EqualsLiteral("back")) {
michael@0:       CopyUTF8toUTF16(cameraName, aList[0]);
michael@0:       gotBack = true;
michael@0:     } else if (cameraName.EqualsLiteral("front")) {
michael@0:       CopyUTF8toUTF16(cameraName, aList[1]);
michael@0:       gotFront = true;
michael@0:     } else {
michael@0:       CopyUTF8toUTF16(cameraName, *aList.InsertElementAt(extraIdx));
michael@0:       extraIdx++;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   if (!gotFront) {
michael@0:     aList.RemoveElementAt(1);
michael@0:   }
michael@0: 
michael@0:   if (!gotBack) {
michael@0:     aList.RemoveElementAt(0);
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: // implementation-specific camera factory
michael@0: already_AddRefed<ICameraControl>
michael@0: ICameraControl::Create(uint32_t aCameraId)
michael@0: {
michael@0:   nsRefPtr<nsGonkCameraControl> control = new nsGonkCameraControl(aCameraId);
michael@0:   return control.forget();
michael@0: }