1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_HARDWARE_CAMERA_PARAMETERS_H 18 #define ANDROID_HARDWARE_CAMERA_PARAMETERS_H 19 20 #include <utils/KeyedVector.h> 21 #include <utils/String8.h> 22 23 namespace android { 24 25 struct Size { 26 int width; 27 int height; 28 29 Size() { 30 width = 0; 31 height = 0; 32 } 33 34 Size(int w, int h) { 35 width = w; 36 height = h; 37 } 38 }; 39 40 class CameraParameters 41 { 42 public: 43 CameraParameters(); 44 CameraParameters(const String8 ¶ms) { unflatten(params); } 45 ~CameraParameters(); 46 47 String8 flatten() const; 48 void unflatten(const String8 ¶ms); 49 50 void set(const char *key, const char *value); 51 void set(const char *key, int value); 52 void setFloat(const char *key, float value); 53 const char *get(const char *key) const; 54 int getInt(const char *key) const; 55 float getFloat(const char *key) const; 56 57 void remove(const char *key); 58 59 void setPreviewSize(int width, int height); 60 void getPreviewSize(int *width, int *height) const; 61 void getSupportedPreviewSizes(Vector<Size> &sizes) const; 62 63 // Set the dimensions in pixels to the given width and height 64 // for video frames. The given width and height must be one 65 // of the supported dimensions returned from 66 // getSupportedVideoSizes(). Must not be called if 67 // getSupportedVideoSizes() returns an empty Vector of Size. 68 void setVideoSize(int width, int height); 69 // Retrieve the current dimensions (width and height) 70 // in pixels for video frames, which must be one of the 71 // supported dimensions returned from getSupportedVideoSizes(). 72 // Must not be called if getSupportedVideoSizes() returns an 73 // empty Vector of Size. 74 void getVideoSize(int *width, int *height) const; 75 // Retrieve a Vector of supported dimensions (width and height) 76 // in pixels for video frames. If sizes returned from the method 77 // is empty, the camera does not support calls to setVideoSize() 78 // or getVideoSize(). In adddition, it also indicates that 79 // the camera only has a single output, and does not have 80 // separate output for video frames and preview frame. 81 void getSupportedVideoSizes(Vector<Size> &sizes) const; 82 // Retrieve the preferred preview size (width and height) in pixels 83 // for video recording. The given width and height must be one of 84 // supported preview sizes returned from getSupportedPreviewSizes(). 85 // Must not be called if getSupportedVideoSizes() returns an empty 86 // Vector of Size. If getSupportedVideoSizes() returns an empty 87 // Vector of Size, the width and height returned from this method 88 // is invalid, and is "-1x-1". 89 void getPreferredPreviewSizeForVideo(int *width, int *height) const; 90 91 void setPreviewFrameRate(int fps); 92 int getPreviewFrameRate() const; 93 void getPreviewFpsRange(int *min_fps, int *max_fps) const; 94 void setPreviewFormat(const char *format); 95 const char *getPreviewFormat() const; 96 void setPictureSize(int width, int height); 97 void getPictureSize(int *width, int *height) const; 98 void getSupportedPictureSizes(Vector<Size> &sizes) const; 99 void setPictureFormat(const char *format); 100 const char *getPictureFormat() const; 101 102 void dump() const; 103 status_t dump(int fd, const Vector<String16>& args) const; 104 105 // Parameter keys to communicate between camera application and driver. 106 // The access (read/write, read only, or write only) is viewed from the 107 // perspective of applications, not driver. 108 109 // Preview frame size in pixels (width x height). 110 // Example value: "480x320". Read/Write. 111 static const char KEY_PREVIEW_SIZE[]; 112 // Supported preview frame sizes in pixels. 113 // Example value: "800x600,480x320". Read only. 114 static const char KEY_SUPPORTED_PREVIEW_SIZES[]; 115 // The current minimum and maximum preview fps. This controls the rate of 116 // preview frames received (CAMERA_MSG_PREVIEW_FRAME). The minimum and 117 // maximum fps must be one of the elements from 118 // KEY_SUPPORTED_PREVIEW_FPS_RANGE parameter. 119 // Example value: "10500,26623" 120 static const char KEY_PREVIEW_FPS_RANGE[]; 121 // The supported preview fps (frame-per-second) ranges. Each range contains 122 // a minimum fps and maximum fps. If minimum fps equals to maximum fps, the 123 // camera outputs frames in fixed frame rate. If not, the camera outputs 124 // frames in auto frame rate. The actual frame rate fluctuates between the 125 // minimum and the maximum. The list has at least one element. The list is 126 // sorted from small to large (first by maximum fps and then minimum fps). 127 // Example value: "(10500,26623),(15000,26623),(30000,30000)" 128 static const char KEY_SUPPORTED_PREVIEW_FPS_RANGE[]; 129 // The image format for preview frames. See CAMERA_MSG_PREVIEW_FRAME in 130 // frameworks/av/include/camera/Camera.h. The default is 131 // PIXEL_FORMAT_YUV420SP. Example value: "yuv420sp" or PIXEL_FORMAT_XXX 132 // constants. Read/write. 133 static const char KEY_PREVIEW_FORMAT[]; 134 // Supported image formats for preview frames. 135 // Example value: "yuv420sp,yuv422i-yuyv". Read only. 136 static const char KEY_SUPPORTED_PREVIEW_FORMATS[]; 137 // Number of preview frames per second. This is the target frame rate. The 138 // actual frame rate depends on the driver. 139 // Example value: "15". Read/write. 140 static const char KEY_PREVIEW_FRAME_RATE[]; 141 // Supported number of preview frames per second. 142 // Example value: "24,15,10". Read. 143 static const char KEY_SUPPORTED_PREVIEW_FRAME_RATES[]; 144 // The dimensions for captured pictures in pixels (width x height). 145 // Example value: "1024x768". Read/write. 146 static const char KEY_PICTURE_SIZE[]; 147 // Supported dimensions for captured pictures in pixels. 148 // Example value: "2048x1536,1024x768". Read only. 149 static const char KEY_SUPPORTED_PICTURE_SIZES[]; 150 // The image format for captured pictures. See CAMERA_MSG_COMPRESSED_IMAGE 151 // in frameworks/base/include/camera/Camera.h. 152 // Example value: "jpeg" or PIXEL_FORMAT_XXX constants. Read/write. 153 static const char KEY_PICTURE_FORMAT[]; 154 // Supported image formats for captured pictures. 155 // Example value: "jpeg,rgb565". Read only. 156 static const char KEY_SUPPORTED_PICTURE_FORMATS[]; 157 // The width (in pixels) of EXIF thumbnail in Jpeg picture. 158 // Example value: "512". Read/write. 159 static const char KEY_JPEG_THUMBNAIL_WIDTH[]; 160 // The height (in pixels) of EXIF thumbnail in Jpeg picture. 161 // Example value: "384". Read/write. 162 static const char KEY_JPEG_THUMBNAIL_HEIGHT[]; 163 // Supported EXIF thumbnail sizes (width x height). 0x0 means not thumbnail 164 // in EXIF. 165 // Example value: "512x384,320x240,0x0". Read only. 166 static const char KEY_SUPPORTED_JPEG_THUMBNAIL_SIZES[]; 167 // The quality of the EXIF thumbnail in Jpeg picture. The range is 1 to 100, 168 // with 100 being the best. 169 // Example value: "90". Read/write. 170 static const char KEY_JPEG_THUMBNAIL_QUALITY[]; 171 // Jpeg quality of captured picture. The range is 1 to 100, with 100 being 172 // the best. 173 // Example value: "90". Read/write. 174 static const char KEY_JPEG_QUALITY[]; 175 // The rotation angle in degrees relative to the orientation of the camera. 176 // This affects the pictures returned from CAMERA_MSG_COMPRESSED_IMAGE. The 177 // camera driver may set orientation in the EXIF header without rotating the 178 // picture. Or the driver may rotate the picture and the EXIF thumbnail. If 179 // the Jpeg picture is rotated, the orientation in the EXIF header will be 180 // missing or 1 (row #0 is top and column #0 is left side). 181 // 182 // Note that the JPEG pictures of front-facing cameras are not mirrored 183 // as in preview display. 184 // 185 // For example, suppose the natural orientation of the device is portrait. 186 // The device is rotated 270 degrees clockwise, so the device orientation is 187 // 270. Suppose a back-facing camera sensor is mounted in landscape and the 188 // top side of the camera sensor is aligned with the right edge of the 189 // display in natural orientation. So the camera orientation is 90. The 190 // rotation should be set to 0 (270 + 90). 191 // 192 // Example value: "0" or "90" or "180" or "270". Write only. 193 static const char KEY_ROTATION[]; 194 // GPS latitude coordinate. GPSLatitude and GPSLatitudeRef will be stored in 195 // JPEG EXIF header. 196 // Example value: "25.032146" or "-33.462809". Write only. 197 static const char KEY_GPS_LATITUDE[]; 198 // GPS longitude coordinate. GPSLongitude and GPSLongitudeRef will be stored 199 // in JPEG EXIF header. 200 // Example value: "121.564448" or "-70.660286". Write only. 201 static const char KEY_GPS_LONGITUDE[]; 202 // GPS altitude. GPSAltitude and GPSAltitudeRef will be stored in JPEG EXIF 203 // header. 204 // Example value: "21.0" or "-5". Write only. 205 static const char KEY_GPS_ALTITUDE[]; 206 // GPS timestamp (UTC in seconds since January 1, 1970). This should be 207 // stored in JPEG EXIF header. 208 // Example value: "1251192757". Write only. 209 static const char KEY_GPS_TIMESTAMP[]; 210 // GPS Processing Method 211 // Example value: "GPS" or "NETWORK". Write only. 212 static const char KEY_GPS_PROCESSING_METHOD[]; 213 // Current white balance setting. 214 // Example value: "auto" or WHITE_BALANCE_XXX constants. Read/write. 215 static const char KEY_WHITE_BALANCE[]; 216 // Supported white balance settings. 217 // Example value: "auto,incandescent,daylight". Read only. 218 static const char KEY_SUPPORTED_WHITE_BALANCE[]; 219 // Current color effect setting. 220 // Example value: "none" or EFFECT_XXX constants. Read/write. 221 static const char KEY_EFFECT[]; 222 // Supported color effect settings. 223 // Example value: "none,mono,sepia". Read only. 224 static const char KEY_SUPPORTED_EFFECTS[]; 225 // Current antibanding setting. 226 // Example value: "auto" or ANTIBANDING_XXX constants. Read/write. 227 static const char KEY_ANTIBANDING[]; 228 // Supported antibanding settings. 229 // Example value: "auto,50hz,60hz,off". Read only. 230 static const char KEY_SUPPORTED_ANTIBANDING[]; 231 // Current scene mode. 232 // Example value: "auto" or SCENE_MODE_XXX constants. Read/write. 233 static const char KEY_SCENE_MODE[]; 234 // Supported scene mode settings. 235 // Example value: "auto,night,fireworks". Read only. 236 static const char KEY_SUPPORTED_SCENE_MODES[]; 237 // Current flash mode. 238 // Example value: "auto" or FLASH_MODE_XXX constants. Read/write. 239 static const char KEY_FLASH_MODE[]; 240 // Supported flash modes. 241 // Example value: "auto,on,off". Read only. 242 static const char KEY_SUPPORTED_FLASH_MODES[]; 243 // Current focus mode. This will not be empty. Applications should call 244 // CameraHardwareInterface.autoFocus to start the focus if focus mode is 245 // FOCUS_MODE_AUTO or FOCUS_MODE_MACRO. 246 // Example value: "auto" or FOCUS_MODE_XXX constants. Read/write. 247 static const char KEY_FOCUS_MODE[]; 248 // Supported focus modes. 249 // Example value: "auto,macro,fixed". Read only. 250 static const char KEY_SUPPORTED_FOCUS_MODES[]; 251 // The maximum number of focus areas supported. This is the maximum length 252 // of KEY_FOCUS_AREAS. 253 // Example value: "0" or "2". Read only. 254 static const char KEY_MAX_NUM_FOCUS_AREAS[]; 255 // Current focus areas. 256 // 257 // Before accessing this parameter, apps should check 258 // KEY_MAX_NUM_FOCUS_AREAS first to know the maximum number of focus areas 259 // first. If the value is 0, focus area is not supported. 260 // 261 // Each focus area is a five-element int array. The first four elements are 262 // the rectangle of the area (left, top, right, bottom). The direction is 263 // relative to the sensor orientation, that is, what the sensor sees. The 264 // direction is not affected by the rotation or mirroring of 265 // CAMERA_CMD_SET_DISPLAY_ORIENTATION. Coordinates range from -1000 to 1000. 266 // (-1000,-1000) is the upper left point. (1000, 1000) is the lower right 267 // point. The width and height of focus areas cannot be 0 or negative. 268 // 269 // The fifth element is the weight. Values for weight must range from 1 to 270 // 1000. The weight should be interpreted as a per-pixel weight - all 271 // pixels in the area have the specified weight. This means a small area 272 // with the same weight as a larger area will have less influence on the 273 // focusing than the larger area. Focus areas can partially overlap and the 274 // driver will add the weights in the overlap region. 275 // 276 // A special case of single focus area (0,0,0,0,0) means driver to decide 277 // the focus area. For example, the driver may use more signals to decide 278 // focus areas and change them dynamically. Apps can set (0,0,0,0,0) if they 279 // want the driver to decide focus areas. 280 // 281 // Focus areas are relative to the current field of view (KEY_ZOOM). No 282 // matter what the zoom level is, (-1000,-1000) represents the top of the 283 // currently visible camera frame. The focus area cannot be set to be 284 // outside the current field of view, even when using zoom. 285 // 286 // Focus area only has effect if the current focus mode is FOCUS_MODE_AUTO, 287 // FOCUS_MODE_MACRO, FOCUS_MODE_CONTINUOUS_VIDEO, or 288 // FOCUS_MODE_CONTINUOUS_PICTURE. 289 // Example value: "(-10,-10,0,0,300),(0,0,10,10,700)". Read/write. 290 static const char KEY_FOCUS_AREAS[]; 291 // Focal length in millimeter. 292 // Example value: "4.31". Read only. 293 static const char KEY_FOCAL_LENGTH[]; 294 // Horizontal angle of view in degrees. 295 // Example value: "54.8". Read only. 296 static const char KEY_HORIZONTAL_VIEW_ANGLE[]; 297 // Vertical angle of view in degrees. 298 // Example value: "42.5". Read only. 299 static const char KEY_VERTICAL_VIEW_ANGLE[]; 300 // Exposure compensation index. 0 means exposure is not adjusted. 301 // Example value: "-5" or "5". Read/write. 302 static const char KEY_EXPOSURE_COMPENSATION[]; 303 // The maximum exposure compensation index (>=0). 304 // Example value: "6". Read only. 305 static const char KEY_MAX_EXPOSURE_COMPENSATION[]; 306 // The minimum exposure compensation index (<=0). 307 // Example value: "-6". Read only. 308 static const char KEY_MIN_EXPOSURE_COMPENSATION[]; 309 // The exposure compensation step. Exposure compensation index multiply by 310 // step eqals to EV. Ex: if exposure compensation index is -6 and step is 311 // 0.3333, EV is -2. 312 // Example value: "0.333333333" or "0.5". Read only. 313 static const char KEY_EXPOSURE_COMPENSATION_STEP[]; 314 // The state of the auto-exposure lock. "true" means that 315 // auto-exposure is locked to its current value and will not 316 // change. "false" means the auto-exposure routine is free to 317 // change exposure values. If auto-exposure is already locked, 318 // setting this to true again has no effect (the driver will not 319 // recalculate exposure values). Changing exposure compensation 320 // settings will still affect the exposure settings while 321 // auto-exposure is locked. Stopping preview or taking a still 322 // image will not change the lock. In conjunction with 323 // exposure compensation, this allows for capturing multi-exposure 324 // brackets with known relative exposure values. Locking 325 // auto-exposure after open but before the first call to 326 // startPreview may result in severely over- or under-exposed 327 // images. The driver will not change the AE lock after 328 // auto-focus completes. 329 static const char KEY_AUTO_EXPOSURE_LOCK[]; 330 // Whether locking the auto-exposure is supported. "true" means it is, and 331 // "false" or this key not existing means it is not supported. 332 static const char KEY_AUTO_EXPOSURE_LOCK_SUPPORTED[]; 333 // The state of the auto-white balance lock. "true" means that 334 // auto-white balance is locked to its current value and will not 335 // change. "false" means the auto-white balance routine is free to 336 // change white balance values. If auto-white balance is already 337 // locked, setting this to true again has no effect (the driver 338 // will not recalculate white balance values). Stopping preview or 339 // taking a still image will not change the lock. In conjunction 340 // with exposure compensation, this allows for capturing 341 // multi-exposure brackets with fixed white balance. Locking 342 // auto-white balance after open but before the first call to 343 // startPreview may result in severely incorrect color. The 344 // driver will not change the AWB lock after auto-focus 345 // completes. 346 static const char KEY_AUTO_WHITEBALANCE_LOCK[]; 347 // Whether locking the auto-white balance is supported. "true" 348 // means it is, and "false" or this key not existing means it is 349 // not supported. 350 static const char KEY_AUTO_WHITEBALANCE_LOCK_SUPPORTED[]; 351 352 // The maximum number of metering areas supported. This is the maximum 353 // length of KEY_METERING_AREAS. 354 // Example value: "0" or "2". Read only. 355 static const char KEY_MAX_NUM_METERING_AREAS[]; 356 // Current metering areas. Camera driver uses these areas to decide 357 // exposure. 358 // 359 // Before accessing this parameter, apps should check 360 // KEY_MAX_NUM_METERING_AREAS first to know the maximum number of metering 361 // areas first. If the value is 0, metering area is not supported. 362 // 363 // Each metering area is a rectangle with specified weight. The direction is 364 // relative to the sensor orientation, that is, what the sensor sees. The 365 // direction is not affected by the rotation or mirroring of 366 // CAMERA_CMD_SET_DISPLAY_ORIENTATION. Coordinates of the rectangle range 367 // from -1000 to 1000. (-1000, -1000) is the upper left point. (1000, 1000) 368 // is the lower right point. The width and height of metering areas cannot 369 // be 0 or negative. 370 // 371 // The fifth element is the weight. Values for weight must range from 1 to 372 // 1000. The weight should be interpreted as a per-pixel weight - all 373 // pixels in the area have the specified weight. This means a small area 374 // with the same weight as a larger area will have less influence on the 375 // metering than the larger area. Metering areas can partially overlap and 376 // the driver will add the weights in the overlap region. 377 // 378 // A special case of all-zero single metering area means driver to decide 379 // the metering area. For example, the driver may use more signals to decide 380 // metering areas and change them dynamically. Apps can set all-zero if they 381 // want the driver to decide metering areas. 382 // 383 // Metering areas are relative to the current field of view (KEY_ZOOM). 384 // No matter what the zoom level is, (-1000,-1000) represents the top of the 385 // currently visible camera frame. The metering area cannot be set to be 386 // outside the current field of view, even when using zoom. 387 // 388 // No matter what metering areas are, the final exposure are compensated 389 // by KEY_EXPOSURE_COMPENSATION. 390 // Example value: "(-10,-10,0,0,300),(0,0,10,10,700)". Read/write. 391 static const char KEY_METERING_AREAS[]; 392 // Current zoom value. 393 // Example value: "0" or "6". Read/write. 394 static const char KEY_ZOOM[]; 395 // Maximum zoom value. 396 // Example value: "6". Read only. 397 static const char KEY_MAX_ZOOM[]; 398 // The zoom ratios of all zoom values. The zoom ratio is in 1/100 399 // increments. Ex: a zoom of 3.2x is returned as 320. The number of list 400 // elements is KEY_MAX_ZOOM + 1. The first element is always 100. The last 401 // element is the zoom ratio of zoom value KEY_MAX_ZOOM. 402 // Example value: "100,150,200,250,300,350,400". Read only. 403 static const char KEY_ZOOM_RATIOS[]; 404 // Whether zoom is supported. Zoom is supported if the value is "true". Zoom 405 // is not supported if the value is not "true" or the key does not exist. 406 // Example value: "true". Read only. 407 static const char KEY_ZOOM_SUPPORTED[]; 408 // Whether if smooth zoom is supported. Smooth zoom is supported if the 409 // value is "true". It is not supported if the value is not "true" or the 410 // key does not exist. 411 // See CAMERA_CMD_START_SMOOTH_ZOOM, CAMERA_CMD_STOP_SMOOTH_ZOOM, and 412 // CAMERA_MSG_ZOOM in frameworks/base/include/camera/Camera.h. 413 // Example value: "true". Read only. 414 static const char KEY_SMOOTH_ZOOM_SUPPORTED[]; 415 416 // The distances (in meters) from the camera to where an object appears to 417 // be in focus. The object is sharpest at the optimal focus distance. The 418 // depth of field is the far focus distance minus near focus distance. 419 // 420 // Focus distances may change after starting auto focus, canceling auto 421 // focus, or starting the preview. Applications can read this anytime to get 422 // the latest focus distances. If the focus mode is FOCUS_MODE_CONTINUOUS, 423 // focus distances may change from time to time. 424 // 425 // This is intended to estimate the distance between the camera and the 426 // subject. After autofocus, the subject distance may be within near and far 427 // focus distance. However, the precision depends on the camera hardware, 428 // autofocus algorithm, the focus area, and the scene. The error can be 429 // large and it should be only used as a reference. 430 // 431 // Far focus distance > optimal focus distance > near focus distance. If 432 // the far focus distance is infinity, the value should be "Infinity" (case 433 // sensitive). The format is three float values separated by commas. The 434 // first is near focus distance. The second is optimal focus distance. The 435 // third is far focus distance. 436 // Example value: "0.95,1.9,Infinity" or "0.049,0.05,0.051". Read only. 437 static const char KEY_FOCUS_DISTANCES[]; 438 439 // The current dimensions in pixels (width x height) for video frames. 440 // The width and height must be one of the supported sizes retrieved 441 // via KEY_SUPPORTED_VIDEO_SIZES. 442 // Example value: "1280x720". Read/write. 443 static const char KEY_VIDEO_SIZE[]; 444 // A list of the supported dimensions in pixels (width x height) 445 // for video frames. See CAMERA_MSG_VIDEO_FRAME for details in 446 // frameworks/base/include/camera/Camera.h. 447 // Example: "176x144,1280x720". Read only. 448 static const char KEY_SUPPORTED_VIDEO_SIZES[]; 449 450 // The maximum number of detected faces supported by hardware face 451 // detection. If the value is 0, hardware face detection is not supported. 452 // Example: "5". Read only 453 static const char KEY_MAX_NUM_DETECTED_FACES_HW[]; 454 455 // The maximum number of detected faces supported by software face 456 // detection. If the value is 0, software face detection is not supported. 457 // Example: "5". Read only 458 static const char KEY_MAX_NUM_DETECTED_FACES_SW[]; 459 460 // Preferred preview frame size in pixels for video recording. 461 // The width and height must be one of the supported sizes retrieved 462 // via KEY_SUPPORTED_PREVIEW_SIZES. This key can be used only when 463 // getSupportedVideoSizes() does not return an empty Vector of Size. 464 // Camcorder applications are recommended to set the preview size 465 // to a value that is not larger than the preferred preview size. 466 // In other words, the product of the width and height of the 467 // preview size should not be larger than that of the preferred 468 // preview size. In addition, we recommend to choos a preview size 469 // that has the same aspect ratio as the resolution of video to be 470 // recorded. 471 // Example value: "800x600". Read only. 472 static const char KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO[]; 473 474 // The image format for video frames. See CAMERA_MSG_VIDEO_FRAME in 475 // frameworks/base/include/camera/Camera.h. 476 // Example value: "yuv420sp" or PIXEL_FORMAT_XXX constants. Read only. 477 static const char KEY_VIDEO_FRAME_FORMAT[]; 478 479 // Sets the hint of the recording mode. If this is true, MediaRecorder.start 480 // may be faster or has less glitches. This should be called before starting 481 // the preview for the best result. But it is allowed to change the hint 482 // while the preview is active. The default value is false. 483 // 484 // The apps can still call Camera.takePicture when the hint is true. The 485 // apps can call MediaRecorder.start when the hint is false. But the 486 // performance may be worse. 487 // Example value: "true" or "false". Read/write. 488 static const char KEY_RECORDING_HINT[]; 489 490 // Returns true if video snapshot is supported. That is, applications 491 // can call Camera.takePicture during recording. Applications do not need to 492 // call Camera.startPreview after taking a picture. The preview will be 493 // still active. Other than that, taking a picture during recording is 494 // identical to taking a picture normally. All settings and methods related 495 // to takePicture work identically. Ex: KEY_PICTURE_SIZE, 496 // KEY_SUPPORTED_PICTURE_SIZES, KEY_JPEG_QUALITY, KEY_ROTATION, and etc. 497 // The picture will have an EXIF header. FLASH_MODE_AUTO and FLASH_MODE_ON 498 // also still work, but the video will record the flash. 499 // 500 // Applications can set shutter callback as null to avoid the shutter 501 // sound. It is also recommended to set raw picture and post view callbacks 502 // to null to avoid the interrupt of preview display. 503 // 504 // Field-of-view of the recorded video may be different from that of the 505 // captured pictures. 506 // Example value: "true" or "false". Read only. 507 static const char KEY_VIDEO_SNAPSHOT_SUPPORTED[]; 508 509 // The state of the video stabilization. If set to true, both the 510 // preview stream and the recorded video stream are stabilized by 511 // the camera. Only valid to set if KEY_VIDEO_STABILIZATION_SUPPORTED is 512 // set to true. 513 // 514 // The value of this key can be changed any time the camera is 515 // open. If preview or recording is active, it is acceptable for 516 // there to be a slight video glitch when video stabilization is 517 // toggled on and off. 518 // 519 // This only stabilizes video streams (between-frames stabilization), and 520 // has no effect on still image capture. 521 static const char KEY_VIDEO_STABILIZATION[]; 522 523 // Returns true if video stabilization is supported. That is, applications 524 // can set KEY_VIDEO_STABILIZATION to true and have a stabilized preview 525 // stream and record stabilized videos. 526 static const char KEY_VIDEO_STABILIZATION_SUPPORTED[]; 527 528 // Value for KEY_ZOOM_SUPPORTED or KEY_SMOOTH_ZOOM_SUPPORTED. 529 static const char TRUE[]; 530 static const char FALSE[]; 531 532 // Value for KEY_FOCUS_DISTANCES. 533 static const char FOCUS_DISTANCE_INFINITY[]; 534 535 // Values for white balance settings. 536 static const char WHITE_BALANCE_AUTO[]; 537 static const char WHITE_BALANCE_INCANDESCENT[]; 538 static const char WHITE_BALANCE_FLUORESCENT[]; 539 static const char WHITE_BALANCE_WARM_FLUORESCENT[]; 540 static const char WHITE_BALANCE_DAYLIGHT[]; 541 static const char WHITE_BALANCE_CLOUDY_DAYLIGHT[]; 542 static const char WHITE_BALANCE_TWILIGHT[]; 543 static const char WHITE_BALANCE_SHADE[]; 544 545 // Values for effect settings. 546 static const char EFFECT_NONE[]; 547 static const char EFFECT_MONO[]; 548 static const char EFFECT_NEGATIVE[]; 549 static const char EFFECT_SOLARIZE[]; 550 static const char EFFECT_SEPIA[]; 551 static const char EFFECT_POSTERIZE[]; 552 static const char EFFECT_WHITEBOARD[]; 553 static const char EFFECT_BLACKBOARD[]; 554 static const char EFFECT_AQUA[]; 555 556 // Values for antibanding settings. 557 static const char ANTIBANDING_AUTO[]; 558 static const char ANTIBANDING_50HZ[]; 559 static const char ANTIBANDING_60HZ[]; 560 static const char ANTIBANDING_OFF[]; 561 562 // Values for flash mode settings. 563 // Flash will not be fired. 564 static const char FLASH_MODE_OFF[]; 565 // Flash will be fired automatically when required. The flash may be fired 566 // during preview, auto-focus, or snapshot depending on the driver. 567 static const char FLASH_MODE_AUTO[]; 568 // Flash will always be fired during snapshot. The flash may also be 569 // fired during preview or auto-focus depending on the driver. 570 static const char FLASH_MODE_ON[]; 571 // Flash will be fired in red-eye reduction mode. 572 static const char FLASH_MODE_RED_EYE[]; 573 // Constant emission of light during preview, auto-focus and snapshot. 574 // This can also be used for video recording. 575 static const char FLASH_MODE_TORCH[]; 576 577 // Values for scene mode settings. 578 static const char SCENE_MODE_AUTO[]; 579 static const char SCENE_MODE_ACTION[]; 580 static const char SCENE_MODE_PORTRAIT[]; 581 static const char SCENE_MODE_LANDSCAPE[]; 582 static const char SCENE_MODE_NIGHT[]; 583 static const char SCENE_MODE_NIGHT_PORTRAIT[]; 584 static const char SCENE_MODE_THEATRE[]; 585 static const char SCENE_MODE_BEACH[]; 586 static const char SCENE_MODE_SNOW[]; 587 static const char SCENE_MODE_SUNSET[]; 588 static const char SCENE_MODE_STEADYPHOTO[]; 589 static const char SCENE_MODE_FIREWORKS[]; 590 static const char SCENE_MODE_SPORTS[]; 591 static const char SCENE_MODE_PARTY[]; 592 static const char SCENE_MODE_CANDLELIGHT[]; 593 // Applications are looking for a barcode. Camera driver will be optimized 594 // for barcode reading. 595 static const char SCENE_MODE_BARCODE[]; 596 // A high-dynamic range mode. In this mode, the HAL module will use a 597 // capture strategy that extends the dynamic range of the captured 598 // image in some fashion. Only the final image is returned. 599 static const char SCENE_MODE_HDR[]; 600 601 // Pixel color formats for KEY_PREVIEW_FORMAT, KEY_PICTURE_FORMAT, 602 // and KEY_VIDEO_FRAME_FORMAT 603 static const char PIXEL_FORMAT_YUV422SP[]; 604 static const char PIXEL_FORMAT_YUV420SP[]; // NV21 605 static const char PIXEL_FORMAT_YUV422I[]; // YUY2 606 static const char PIXEL_FORMAT_YUV420P[]; // YV12 607 static const char PIXEL_FORMAT_RGB565[]; 608 static const char PIXEL_FORMAT_RGBA8888[]; 609 static const char PIXEL_FORMAT_JPEG[]; 610 // Raw bayer format used for images, which is 10 bit precision samples 611 // stored in 16 bit words. The filter pattern is RGGB. 612 static const char PIXEL_FORMAT_BAYER_RGGB[]; 613 // Pixel format is not known to the framework 614 static const char PIXEL_FORMAT_ANDROID_OPAQUE[]; 615 616 // Values for focus mode settings. 617 // Auto-focus mode. Applications should call 618 // CameraHardwareInterface.autoFocus to start the focus in this mode. 619 static const char FOCUS_MODE_AUTO[]; 620 // Focus is set at infinity. Applications should not call 621 // CameraHardwareInterface.autoFocus in this mode. 622 static const char FOCUS_MODE_INFINITY[]; 623 // Macro (close-up) focus mode. Applications should call 624 // CameraHardwareInterface.autoFocus to start the focus in this mode. 625 static const char FOCUS_MODE_MACRO[]; 626 // Focus is fixed. The camera is always in this mode if the focus is not 627 // adjustable. If the camera has auto-focus, this mode can fix the 628 // focus, which is usually at hyperfocal distance. Applications should 629 // not call CameraHardwareInterface.autoFocus in this mode. 630 static const char FOCUS_MODE_FIXED[]; 631 // Extended depth of field (EDOF). Focusing is done digitally and 632 // continuously. Applications should not call 633 // CameraHardwareInterface.autoFocus in this mode. 634 static const char FOCUS_MODE_EDOF[]; 635 // Continuous auto focus mode intended for video recording. The camera 636 // continuously tries to focus. This is the best choice for video 637 // recording because the focus changes smoothly . Applications still can 638 // call CameraHardwareInterface.takePicture in this mode but the subject may 639 // not be in focus. Auto focus starts when the parameter is set. 640 // 641 // Applications can call CameraHardwareInterface.autoFocus in this mode. The 642 // focus callback will immediately return with a boolean that indicates 643 // whether the focus is sharp or not. The focus position is locked after 644 // autoFocus call. If applications want to resume the continuous focus, 645 // cancelAutoFocus must be called. Restarting the preview will not resume 646 // the continuous autofocus. To stop continuous focus, applications should 647 // change the focus mode to other modes. 648 static const char FOCUS_MODE_CONTINUOUS_VIDEO[]; 649 // Continuous auto focus mode intended for taking pictures. The camera 650 // continuously tries to focus. The speed of focus change is more aggressive 651 // than FOCUS_MODE_CONTINUOUS_VIDEO. Auto focus starts when the parameter is 652 // set. 653 // 654 // Applications can call CameraHardwareInterface.autoFocus in this mode. If 655 // the autofocus is in the middle of scanning, the focus callback will 656 // return when it completes. If the autofocus is not scanning, focus 657 // callback will immediately return with a boolean that indicates whether 658 // the focus is sharp or not. The apps can then decide if they want to take 659 // a picture immediately or to change the focus mode to auto, and run a full 660 // autofocus cycle. The focus position is locked after autoFocus call. If 661 // applications want to resume the continuous focus, cancelAutoFocus must be 662 // called. Restarting the preview will not resume the continuous autofocus. 663 // To stop continuous focus, applications should change the focus mode to 664 // other modes. 665 static const char FOCUS_MODE_CONTINUOUS_PICTURE[]; 666 667 private: 668 DefaultKeyedVector<String8,String8> mMap; 669 }; 670 671 }; // namespace android 672 673 #endif 674
