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dom/camera/GonkCameraManager.cpp@97036ab72558 (annotated)

dom/camera/GonkCameraManager.cpp

Tue, 06 Jan 2015 21:39:09 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Tue, 06 Jan 2015 21:39:09 +0100

branch

TOR_BUG_9701

changeset 8

97036ab72558

permissions

-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0	1	/*
michael@0	2	* Copyright (C) 2012-2014 Mozilla Foundation
michael@0	3	*
michael@0	4	* Licensed under the Apache License, Version 2.0 (the "License");
michael@0	5	* you may not use this file except in compliance with the License.
michael@0	6	* You may obtain a copy of the License at
michael@0	7	*
michael@0	8	* http://www.apache.org/licenses/LICENSE-2.0
michael@0	9	*
michael@0	10	* Unless required by applicable law or agreed to in writing, software
michael@0	11	* distributed under the License is distributed on an "AS IS" BASIS,
michael@0	12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
michael@0	13	* See the License for the specific language governing permissions and
michael@0	14	* limitations under the License.
michael@0	15	*/
michael@0	16
michael@0	17	#include "ICameraControl.h"
michael@0	18
michael@0	19	#include <camera/Camera.h>
michael@0	20
michael@0	21	#include "CameraCommon.h"
michael@0	22	#include "GonkCameraControl.h"
michael@0	23
michael@0	24	using namespace mozilla;
michael@0	25
michael@0	26	// From ICameraControl, gonk-specific management functions
michael@0	27	nsresult
michael@0	28	ICameraControl::GetNumberOfCameras(int32_t& aDeviceCount)
michael@0	29	{
michael@0	30	aDeviceCount = android::Camera::getNumberOfCameras();
michael@0	31	return NS_OK;
michael@0	32	}
michael@0	33
michael@0	34	nsresult
michael@0	35	ICameraControl::GetCameraName(uint32_t aDeviceNum, nsCString& aDeviceName)
michael@0	36	{
michael@0	37	int32_t count = android::Camera::getNumberOfCameras();
michael@0	38	int32_t deviceNum = static_cast<int32_t>(aDeviceNum);
michael@0	39
michael@0	40	DOM_CAMERA_LOGI("GetCameraName : getNumberOfCameras() returned %d\n", count);
michael@0	41	if (deviceNum < 0 || deviceNum > count) {
michael@0	42	DOM_CAMERA_LOGE("GetCameraName : invalid device number (%u)\n", aDeviceNum);
michael@0	43	return NS_ERROR_NOT_AVAILABLE;
michael@0	44	}
michael@0	45
michael@0	46	android::CameraInfo info;
michael@0	47	int rv = android::Camera::getCameraInfo(deviceNum, &info);
michael@0	48	if (rv != 0) {
michael@0	49	DOM_CAMERA_LOGE("GetCameraName : get_camera_info(%d) failed: %d\n", deviceNum, rv);
michael@0	50	return NS_ERROR_NOT_AVAILABLE;
michael@0	51	}
michael@0	52
michael@0	53	switch (info.facing) {
michael@0	54	case CAMERA_FACING_BACK:
michael@0	55	aDeviceName.Assign("back");
michael@0	56	break;
michael@0	57
michael@0	58	case CAMERA_FACING_FRONT:
michael@0	59	aDeviceName.Assign("front");
michael@0	60	break;
michael@0	61
michael@0	62	default:
michael@0	63	aDeviceName.Assign("extra-camera-");
michael@0	64	aDeviceName.AppendInt(deviceNum);
michael@0	65	break;
michael@0	66	}
michael@0	67	return NS_OK;
michael@0	68	}
michael@0	69
michael@0	70	nsresult
michael@0	71	ICameraControl::GetListOfCameras(nsTArray<nsString>& aList)
michael@0	72	{
michael@0	73	int32_t count = android::Camera::getNumberOfCameras();
michael@0	74	DOM_CAMERA_LOGI("getListOfCameras : getNumberOfCameras() returned %d\n", count);
michael@0	75	if (count <= 0) {
michael@0	76	return NS_OK;
michael@0	77	}
michael@0	78
michael@0	79	// Allocate 2 extra slots to reserve space for 'front' and 'back' cameras
michael@0	80	// at the front of the array--we will collapse any empty slots below.
michael@0	81	aList.SetLength(2);
michael@0	82	uint32_t extraIdx = 2;
michael@0	83	bool gotFront = false;
michael@0	84	bool gotBack = false;
michael@0	85	while (count--) {
michael@0	86	nsCString cameraName;
michael@0	87	nsresult result = GetCameraName(count, cameraName);
michael@0	88	if (result != NS_OK) {
michael@0	89	continue;
michael@0	90	}
michael@0	91
michael@0	92	// The first camera we find named 'back' gets slot 0; and the first
michael@0	93	// we find named 'front' gets slot 1. All others appear after these.
michael@0	94	if (cameraName.EqualsLiteral("back")) {
michael@0	95	CopyUTF8toUTF16(cameraName, aList[0]);
michael@0	96	gotBack = true;
michael@0	97	} else if (cameraName.EqualsLiteral("front")) {
michael@0	98	CopyUTF8toUTF16(cameraName, aList[1]);
michael@0	99	gotFront = true;
michael@0	100	} else {
michael@0	101	CopyUTF8toUTF16(cameraName, *aList.InsertElementAt(extraIdx));
michael@0	102	extraIdx++;
michael@0	103	}
michael@0	104	}
michael@0	105
michael@0	106	if (!gotFront) {
michael@0	107	aList.RemoveElementAt(1);
michael@0	108	}
michael@0	109
michael@0	110	if (!gotBack) {
michael@0	111	aList.RemoveElementAt(0);
michael@0	112	}
michael@0	113
michael@0	114	return NS_OK;
michael@0	115	}
michael@0	116
michael@0	117	// implementation-specific camera factory
michael@0	118	already_AddRefed<ICameraControl>
michael@0	119	ICameraControl::Create(uint32_t aCameraId)
michael@0	120	{
michael@0	121	nsRefPtr<nsGonkCameraControl> control = new nsGonkCameraControl(aCameraId);
michael@0	122	return control.forget();
michael@0	123	}