| /* |
| * Copyright (C) 2012 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. |
| */ |
| |
| /** |
| * The Scene class implements a simple physical simulation of a scene, using the |
| * CIE 1931 colorspace to represent light in physical units (lux). |
| * |
| * It's fairly approximate, but does provide a scene with realistic widely |
| * variable illumination levels and colors over time. |
| * |
| */ |
| |
| #ifndef HW_EMULATOR_CAMERA2_SCENE_H |
| #define HW_EMULATOR_CAMERA2_SCENE_H |
| |
| #include "utils/Timers.h" |
| |
| namespace android { |
| |
| class EmulatedScene { |
| public: |
| EmulatedScene(int sensor_width_px, int sensor_height_px, |
| float sensor_sensitivity, int sensor_orientation, |
| bool is_front_facing); |
| ~EmulatedScene(); |
| |
| void Initialize(int sensor_width_px, int sensor_height_px, |
| float sensor_sensitivity); |
| |
| // Set the filter coefficients for the red, green, and blue filters on the |
| // sensor. Used as an optimization to pre-calculate various illuminance |
| // values. Two different green filters can be provided, to account for |
| // possible cross-talk on a Bayer sensor. Must be called before |
| // calculateScene. |
| void SetColorFilterXYZ(float rX, float rY, float rZ, float grX, float grY, |
| float grZ, float gbX, float gbY, float gbZ, float bX, |
| float bY, float bZ); |
| |
| // Set time of day (24-hour clock). This controls the general light levels |
| // in the scene. Must be called before calculateScene. |
| void SetHour(int hour); |
| // Get current hour |
| int GetHour() const; |
| |
| void SetScreenRotation(uint32_t screen_rotation); |
| |
| // Set the duration of exposure for determining luminous exposure. |
| // Must be called before calculateScene |
| void SetExposureDuration(float seconds); |
| |
| // Set test pattern mode; this draws a solid-color image set to the color |
| // defined by test pattern data |
| void SetTestPattern(bool enabled); |
| void SetTestPatternData(uint32_t data[4]); |
| |
| // Calculate scene information for current hour and the time offset since |
| // the hour. Resets pixel readout location to 0,0 |
| void CalculateScene(nsecs_t time, int32_t handshake_divider); |
| |
| // Set sensor pixel readout location. |
| void SetReadoutPixel(int x, int y); |
| |
| // Get sensor response in physical units (electrons) for light hitting the |
| // current readout pixel, after passing through color filters. The readout |
| // pixel will be auto-incremented horizontally. The returned array can be |
| // indexed with ColorChannels. |
| const uint32_t* GetPixelElectrons(); |
| |
| // Get sensor response in physical units (electrons) for light hitting the |
| // current readout pixel, after passing through color filters. The readout |
| // pixel will be auto-incremented vertically. The returned array can be |
| // indexed with ColorChannels. |
| const uint32_t* GetPixelElectronsColumn(); |
| |
| enum ColorChannels { R = 0, Gr, Gb, B, Y, Cb, Cr, NUM_CHANNELS }; |
| |
| static const int kSceneWidth = 20; |
| static const int kSceneHeight = 20; |
| |
| private: |
| void InitiliazeSceneRotation(bool clock_wise); |
| |
| uint8_t scene_rot0_[kSceneWidth*kSceneHeight]; |
| uint8_t scene_rot90_[kSceneWidth*kSceneHeight]; |
| uint8_t scene_rot180_[kSceneWidth*kSceneHeight]; |
| uint8_t scene_rot270_[kSceneWidth*kSceneHeight]; |
| uint32_t screen_rotation_; |
| uint8_t *current_scene_; |
| int32_t sensor_orientation_; |
| bool is_front_facing_; |
| |
| // Sensor color filtering coefficients in XYZ |
| float filter_r_[3]; |
| float filter_gr_[3]; |
| float filter_gb_[3]; |
| float filter_b_[3]; |
| |
| int offset_x_, offset_y_; |
| int map_div_; |
| |
| int handshake_x_, handshake_y_; |
| |
| int sensor_width_; |
| int sensor_height_; |
| int current_x_; |
| int current_y_; |
| int sub_x_; |
| int sub_y_; |
| int scene_x_; |
| int scene_y_; |
| int scene_idx_; |
| uint32_t* current_scene_material_; |
| |
| int hour_; |
| float exposure_duration_; |
| float sensor_sensitivity_; // electrons per lux-second |
| |
| bool test_pattern_mode_; // SOLID_COLOR only |
| uint32_t test_pattern_data_[4]; |
| |
| enum Materials { |
| GRASS = 0, |
| GRASS_SHADOW, |
| HILL, |
| WALL, |
| ROOF, |
| DOOR, |
| CHIMNEY, |
| WINDOW, |
| SUN, |
| SKY, |
| MOON, |
| NUM_MATERIALS |
| }; |
| |
| uint32_t current_colors_[NUM_MATERIALS * NUM_CHANNELS]; |
| |
| /** |
| * Constants for scene definition. These are various degrees of approximate. |
| */ |
| |
| // Fake handshake parameters. Two shake frequencies per axis, plus magnitude |
| // as a fraction of a scene tile, and relative magnitudes for the frequencies |
| static const float kHorizShakeFreq1; |
| static const float kHorizShakeFreq2; |
| static const float kVertShakeFreq1; |
| static const float kVertShakeFreq2; |
| static const float kFreq1Magnitude; |
| static const float kFreq2Magnitude; |
| |
| static const float kShakeFraction; |
| |
| // Aperture of imaging lens |
| static const float kAperture; |
| |
| // Sun, moon illuminance levels in 2-hour increments. These don't match any |
| // real day anywhere. |
| static const uint32_t kTimeStep = 2; |
| static const float kSunlight[]; |
| static const float kMoonlight[]; |
| static const int kSunOverhead; |
| static const int kMoonOverhead; |
| |
| // Illumination levels for various conditions, in lux |
| static const float kDirectSunIllum; |
| static const float kDaylightShadeIllum; |
| static const float kSunsetIllum; |
| static const float kTwilightIllum; |
| static const float kFullMoonIllum; |
| static const float kClearNightIllum; |
| static const float kStarIllum; |
| static const float kLivingRoomIllum; |
| |
| // Chromaticity of various illumination sources |
| static const float kIncandescentXY[2]; |
| static const float kDirectSunlightXY[2]; |
| static const float kDaylightXY[2]; |
| static const float kNoonSkyXY[2]; |
| static const float kMoonlightXY[2]; |
| static const float kSunsetXY[2]; |
| |
| static const uint8_t kSelfLit; |
| static const uint8_t kShadowed; |
| static const uint8_t kSky; |
| |
| static const float kMaterials_xyY[NUM_MATERIALS][3]; |
| static const uint8_t kMaterialsFlags[NUM_MATERIALS]; |
| |
| static const uint8_t kScene[]; |
| }; |
| |
| } // namespace android |
| |
| #endif // HW_EMULATOR_CAMERA2_SCENE_H |