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 24 namespace 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 37 class FakeCamera { 38 public: 39 FakeCamera(int width, int height); 40 ~FakeCamera(); 41 42 void setSize(int width, int height); 43 void getNextFrameAsYuv422(uint8_t *buffer); 44 // Write to the fd a string representing the current state. 45 void dump(int fd) const; 46 47 private: 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