gecko-dev/dom/camera/GonkCameraManager.cpp

113 строки
3.1 KiB
C++

/*
* Copyright (C) 2012 Mozilla Foundation
*
* 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.
*/
#include <camera/Camera.h>
#include "jsapi.h"
#include "GonkCameraControl.h"
#include "DOMCameraManager.h"
#include "CameraCommon.h"
#include "mozilla/ErrorResult.h"
using namespace mozilla;
// From nsDOMCameraManager, but gonk-specific!
nsresult
nsDOMCameraManager::GetNumberOfCameras(int32_t& aDeviceCount)
{
aDeviceCount = android::Camera::getNumberOfCameras();
return NS_OK;
}
nsresult
nsDOMCameraManager::GetCameraName(uint32_t aDeviceNum, nsCString& aDeviceName)
{
int32_t count = android::Camera::getNumberOfCameras();
DOM_CAMERA_LOGI("GetCameraName : getNumberOfCameras() returned %d\n", count);
if (aDeviceNum > count) {
DOM_CAMERA_LOGE("GetCameraName : invalid device number");
return NS_ERROR_NOT_AVAILABLE;
}
android::CameraInfo info;
int rv = android::Camera::getCameraInfo(aDeviceNum, &info);
if (rv != 0) {
DOM_CAMERA_LOGE("GetCameraName : get_camera_info(%d) failed: %d\n", aDeviceNum, rv);
return NS_ERROR_NOT_AVAILABLE;
}
switch (info.facing) {
case CAMERA_FACING_BACK:
aDeviceName.Assign("back");
break;
case CAMERA_FACING_FRONT:
aDeviceName.Assign("front");
break;
default:
aDeviceName.Assign("extra-camera-");
aDeviceName.AppendInt(aDeviceNum);
break;
}
return NS_OK;
}
void
nsDOMCameraManager::GetListOfCameras(nsTArray<nsString>& aList, ErrorResult& aRv)
{
int32_t count = android::Camera::getNumberOfCameras();
if (count <= 0) {
return;
}
DOM_CAMERA_LOGI("getListOfCameras : getNumberOfCameras() returned %d\n", count);
// Allocate 2 extra slots to reserve space for 'front' and 'back' cameras
// at the front of the array--we will collapse any empty slots below.
aList.SetLength(2);
uint32_t extraIdx = 2;
bool gotFront = false, gotBack = false;
while (count--) {
nsCString cameraName;
nsresult result = GetCameraName(count, cameraName);
if (result != NS_OK) {
continue;
}
// The first camera we find named 'back' gets slot 0; and the first
// we find named 'front' gets slot 1. All others appear after these.
if (cameraName.EqualsLiteral("back")) {
CopyUTF8toUTF16(cameraName, aList[0]);
gotBack = true;
} else if (cameraName.EqualsLiteral("front")) {
CopyUTF8toUTF16(cameraName, aList[1]);
gotFront = true;
} else {
CopyUTF8toUTF16(cameraName, *aList.InsertElementAt(extraIdx));
extraIdx++;
}
}
if (!gotFront) {
aList.RemoveElementAt(1);
}
if (!gotBack) {
aList.RemoveElementAt(0);
}
}