camera/EmulatedFakeCamera.cpp

/*
 * Copyright (C) 2011 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.
 */

/*
 * Contains implementation of a class EmulatedFakeCamera that encapsulates
 * functionality of a fake camera.
 */

#define LOG_NDEBUG 0
#define LOG_TAG "EmulatedCamera_FakeCamera"
#include <log/log.h>
#include <cutils/properties.h>
#include "EmulatedFakeCamera.h"
#include "EmulatedCameraFactory.h"
#include "EmulatedFakeCameraDevice.h"
#include "EmulatedFakeRotatingCameraDevice.h"

namespace android {

EmulatedFakeCamera::EmulatedFakeCamera(int cameraId,
                                       bool facingBack,
                                       struct hw_module_t* module,
                                       CbManager* cbManager)
        : EmulatedCamera(cameraId, module, cbManager),
          mFacingBack(facingBack),
          mFakeCameraDevice(nullptr)
{
    const char *key = "ro.kernel.qemu.camera.fake.rotating";
    char prop[PROPERTY_VALUE_MAX];
    if (property_get(key, prop, nullptr) > 0) {
        mFakeCameraDevice = new EmulatedFakeRotatingCameraDevice(this);
    } else {
        mFakeCameraDevice = new EmulatedFakeCameraDevice(this);
    }
}

EmulatedFakeCamera::~EmulatedFakeCamera()
{
    delete mFakeCameraDevice;
}

/****************************************************************************
 * Public API overrides
 ***************************************************************************/

status_t EmulatedFakeCamera::Initialize()
{
    status_t res = mFakeCameraDevice->Initialize();
    if (res != NO_ERROR) {
        return res;
    }

    const char* facing = mFacingBack ? EmulatedCamera::FACING_BACK :
                                       EmulatedCamera::FACING_FRONT;

    mParameters.set(EmulatedCamera::FACING_KEY, facing);
    ALOGD("%s: Fake camera is facing %s", __FUNCTION__, facing);

    mParameters.set(EmulatedCamera::ORIENTATION_KEY,
                    gEmulatedCameraFactory.getFakeCameraOrientation());
    mParameters.set(CameraParameters::KEY_ROTATION,
                    gEmulatedCameraFactory.getFakeCameraOrientation());

    res = EmulatedCamera::Initialize();
    if (res != NO_ERROR) {
        return res;
    }

    /*
     * Parameters provided by the camera device.
     */

   /* 352x288, 320x240 and 176x144 frame dimensions are required by
     * the framework for video mode preview and video recording. */
    mParameters.set(CameraParameters::KEY_SUPPORTED_PICTURE_SIZES,
                    "1920x1080,1280x720,640x480,352x288,320x240");
    mParameters.set(CameraParameters::KEY_SUPPORTED_PREVIEW_SIZES,
                    "1920x1080,1280x720,640x480,352x288,320x240,176x144");
    mParameters.set(CameraParameters::KEY_SUPPORTED_VIDEO_SIZES,
                    "1920x1080,1280x720,640x480,352x288,320x240,176x144");
    mParameters.set(CameraParameters::KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO,
                    "1920x1080");

    mParameters.setPreviewSize(1920, 1080);
    mParameters.setPictureSize(1920, 1080);

    return NO_ERROR;
}

EmulatedCameraDevice* EmulatedFakeCamera::getCameraDevice()
{
    return mFakeCameraDevice;
}

};  /* namespace android */