1/* 2** 3** Copyright 2008, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18#ifndef ANDROID_HARDWARE_FAKECAMERA_H 19#define ANDROID_HARDWARE_FAKECAMERA_H 20 21#include <sys/types.h> 22#include <stdint.h> 23 24namespace android { 25 26/* 27 * FakeCamera is used in the CameraHardwareStub to provide a fake video feed 28 * when the system does not have a camera in hardware. 29 * The fake video is a moving black and white checkerboard background with a 30 * bouncing gray square in the foreground. 31 * This class is not thread-safe. 32 * 33 * TODO: Since the major methods provides a raw/uncompressed video feed, rename 34 * this class to RawVideoSource. 35 */ 36 37class FakeCamera { 38public: 39 FakeCamera(int width, int height); 40 ~FakeCamera(); 41 42 void setSize(int width, int height); 43 void getNextFrameAsYuv420(uint8_t *buffer); 44 // Write to the fd a string representing the current state. 45 void dump(int fd) const; 46 47private: 48 // TODO: remove the uint16_t buffer param everywhere since it is a field of 49 // this class. 50 void getNextFrameAsRgb565(uint16_t *buffer); 51 52 void drawSquare(uint16_t *buffer, int x, int y, int size, int color, int shadow); 53 void drawCheckerboard(uint16_t *buffer, int size); 54 55 static const int kRed = 0xf800; 56 static const int kGreen = 0x07c0; 57 static const int kBlue = 0x003e; 58 59 int mWidth, mHeight; 60 int mCounter; 61 int mCheckX, mCheckY; 62 uint16_t *mTmpRgb16Buffer; 63}; 64 65}; // namespace android 66 67#endif // ANDROID_HARDWARE_FAKECAMERA_H 68