gecko-dev/dom/camera/GonkCameraManager.cpp

92 строки
2.7 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 "jsapi.h"
#include "libcameraservice/CameraHardwareInterface.h"
#include "GonkCameraControl.h"
#include "DOMCameraManager.h"
#include "CameraCommon.h"
// From nsDOMCameraManager, but gonk-specific!
/* [implicit_jscontext] jsval getListOfCameras (); */
NS_IMETHODIMP
nsDOMCameraManager::GetListOfCameras(JSContext* cx, JS::Value* _retval)
{
JSObject* a = JS_NewArrayObject(cx, 0, nullptr);
camera_module_t* module;
uint32_t index = 0;
uint32_t count;
if (!a) {
DOM_CAMERA_LOGE("getListOfCameras : Could not create array object");
return NS_ERROR_OUT_OF_MEMORY;
}
if (hw_get_module(CAMERA_HARDWARE_MODULE_ID, (const hw_module_t**)&module) < 0) {
DOM_CAMERA_LOGE("getListOfCameras : Could not load camera HAL module");
return NS_ERROR_NOT_AVAILABLE;
}
count = module->get_number_of_cameras();
DOM_CAMERA_LOGI("getListOfCameras : get_number_of_cameras() returned %d\n", count);
while (count--) {
struct camera_info info;
int rv = module->get_camera_info(count, &info);
if (rv != 0) {
DOM_CAMERA_LOGE("getListOfCameras : get_camera_info(%d) failed: %d\n", count, rv);
continue;
}
JSString* v;
jsval jv;
switch (info.facing) {
case CAMERA_FACING_BACK:
v = JS_NewStringCopyZ(cx, "back");
index = 0;
break;
case CAMERA_FACING_FRONT:
v = JS_NewStringCopyZ(cx, "front");
index = 1;
break;
default:
// TODO: see bug 779143.
{
static uint32_t extraIndex = 2;
nsCString s;
s.AppendPrintf("extra-camera-%d", count);
v = JS_NewStringCopyZ(cx, s.get());
index = extraIndex++;
}
break;
}
if (!v) {
DOM_CAMERA_LOGE("getListOfCameras : out of memory populating camera list");
return NS_ERROR_NOT_AVAILABLE;
}
jv = STRING_TO_JSVAL(v);
if (!JS_SetElement(cx, a, index, &jv)) {
DOM_CAMERA_LOGE("getListOfCameras : failed building list of cameras");
return NS_ERROR_NOT_AVAILABLE;
}
}
*_retval = OBJECT_TO_JSVAL(a);
return NS_OK;
}