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 /** 106 * Returns a Vector containing the supported preview formats 107 * as enums given in graphics.h. 108 */ 109 void getSupportedPreviewFormats(Vector<int>& formats) const; 110 111 // Returns true if no keys are present 112 bool isEmpty() const; 113 114 // Parameter keys to communicate between camera application and driver. 115 // The access (read/write, read only, or write only) is viewed from the 116 // perspective of applications, not driver. 117 118 // Preview frame size in pixels (width x height). 119 // Example value: "480x320". Read/Write. 120 static const char KEY_PREVIEW_SIZE[]; 121 // Supported preview frame sizes in pixels. 122 // Example value: "800x600,480x320". Read only. 123 static const char KEY_SUPPORTED_PREVIEW_SIZES[]; 124 // The current minimum and maximum preview fps. This controls the rate of 125 // preview frames received (CAMERA_MSG_PREVIEW_FRAME). The minimum and 126 // maximum fps must be one of the elements from 127 // KEY_SUPPORTED_PREVIEW_FPS_RANGE parameter. 128 // Example value: "10500,26623" 129 static const char KEY_PREVIEW_FPS_RANGE[]; 130 // The supported preview fps (frame-per-second) ranges. Each range contains 131 // a minimum fps and maximum fps. If minimum fps equals to maximum fps, the 132 // camera outputs frames in fixed frame rate. If not, the camera outputs 133 // frames in auto frame rate. The actual frame rate fluctuates between the 134 // minimum and the maximum. The list has at least one element. The list is 135 // sorted from small to large (first by maximum fps and then minimum fps). 136 // Example value: "(10500,26623),(15000,26623),(30000,30000)" 137 static const char KEY_SUPPORTED_PREVIEW_FPS_RANGE[]; 138 // The image format for preview frames. See CAMERA_MSG_PREVIEW_FRAME in 139 // frameworks/av/include/camera/Camera.h. The default is 140 // PIXEL_FORMAT_YUV420SP. Example value: "yuv420sp" or PIXEL_FORMAT_XXX 141 // constants. Read/write. 142 static const char KEY_PREVIEW_FORMAT[]; 143 // Supported image formats for preview frames. 144 // Example value: "yuv420sp,yuv422i-yuyv". Read only. 145 static const char KEY_SUPPORTED_PREVIEW_FORMATS[]; 146 // Number of preview frames per second. This is the target frame rate. The 147 // actual frame rate depends on the driver. 148 // Example value: "15". Read/write. 149 static const char KEY_PREVIEW_FRAME_RATE[]; 150 // Supported number of preview frames per second. 151 // Example value: "24,15,10". Read. 152 static const char KEY_SUPPORTED_PREVIEW_FRAME_RATES[]; 153 // The dimensions for captured pictures in pixels (width x height). 154 // Example value: "1024x768". Read/write. 155 static const char KEY_PICTURE_SIZE[]; 156 // Supported dimensions for captured pictures in pixels. 157 // Example value: "2048x1536,1024x768". Read only. 158 static const char KEY_SUPPORTED_PICTURE_SIZES[]; 159 // The image format for captured pictures. See CAMERA_MSG_COMPRESSED_IMAGE 160 // in frameworks/base/include/camera/Camera.h. 161 // Example value: "jpeg" or PIXEL_FORMAT_XXX constants. Read/write. 162 static const char KEY_PICTURE_FORMAT[]; 163 // Supported image formats for captured pictures. 164 // Example value: "jpeg,rgb565". Read only. 165 static const char KEY_SUPPORTED_PICTURE_FORMATS[]; 166 // The width (in pixels) of EXIF thumbnail in Jpeg picture. 167 // Example value: "512". Read/write. 168 static const char KEY_JPEG_THUMBNAIL_WIDTH[]; 169 // The height (in pixels) of EXIF thumbnail in Jpeg picture. 170 // Example value: "384". Read/write. 171 static const char KEY_JPEG_THUMBNAIL_HEIGHT[]; 172 // Supported EXIF thumbnail sizes (width x height). 0x0 means not thumbnail 173 // in EXIF. 174 // Example value: "512x384,320x240,0x0". Read only. 175 static const char KEY_SUPPORTED_JPEG_THUMBNAIL_SIZES[]; 176 // The quality of the EXIF thumbnail in Jpeg picture. The range is 1 to 100, 177 // with 100 being the best. 178 // Example value: "90". Read/write. 179 static const char KEY_JPEG_THUMBNAIL_QUALITY[]; 180 // Jpeg quality of captured picture. The range is 1 to 100, with 100 being 181 // the best. 182 // Example value: "90". Read/write. 183 static const char KEY_JPEG_QUALITY[]; 184 // The rotation angle in degrees relative to the orientation of the camera. 185 // This affects the pictures returned from CAMERA_MSG_COMPRESSED_IMAGE. The 186 // camera driver may set orientation in the EXIF header without rotating the 187 // picture. Or the driver may rotate the picture and the EXIF thumbnail. If 188 // the Jpeg picture is rotated, the orientation in the EXIF header will be 189 // missing or 1 (row #0 is top and column #0 is left side). 190 // 191 // Note that the JPEG pictures of front-facing cameras are not mirrored 192 // as in preview display. 193 // 194 // For example, suppose the natural orientation of the device is portrait. 195 // The device is rotated 270 degrees clockwise, so the device orientation is 196 // 270. Suppose a back-facing camera sensor is mounted in landscape and the 197 // top side of the camera sensor is aligned with the right edge of the 198 // display in natural orientation. So the camera orientation is 90. The 199 // rotation should be set to 0 (270 + 90). 200 // 201 // Example value: "0" or "90" or "180" or "270". Write only. 202 static const char KEY_ROTATION[]; 203 // GPS latitude coordinate. GPSLatitude and GPSLatitudeRef will be stored in 204 // JPEG EXIF header. 205 // Example value: "25.032146" or "-33.462809". Write only. 206 static const char KEY_GPS_LATITUDE[]; 207 // GPS longitude coordinate. GPSLongitude and GPSLongitudeRef will be stored 208 // in JPEG EXIF header. 209 // Example value: "121.564448" or "-70.660286". Write only. 210 static const char KEY_GPS_LONGITUDE[]; 211 // GPS altitude. GPSAltitude and GPSAltitudeRef will be stored in JPEG EXIF 212 // header. 213 // Example value: "21.0" or "-5". Write only. 214 static const char KEY_GPS_ALTITUDE[]; 215 // GPS timestamp (UTC in seconds since January 1, 1970). This should be 216 // stored in JPEG EXIF header. 217 // Example value: "1251192757". Write only. 218 static const char KEY_GPS_TIMESTAMP[]; 219 // GPS Processing Method 220 // Example value: "GPS" or "NETWORK". Write only. 221 static const char KEY_GPS_PROCESSING_METHOD[]; 222 // Current white balance setting. 223 // Example value: "auto" or WHITE_BALANCE_XXX constants. Read/write. 224 static const char KEY_WHITE_BALANCE[]; 225 // Supported white balance settings. 226 // Example value: "auto,incandescent,daylight". Read only. 227 static const char KEY_SUPPORTED_WHITE_BALANCE[]; 228 // Current color effect setting. 229 // Example value: "none" or EFFECT_XXX constants. Read/write. 230 static const char KEY_EFFECT[]; 231 // Supported color effect settings. 232 // Example value: "none,mono,sepia". Read only. 233 static const char KEY_SUPPORTED_EFFECTS[]; 234 // Current antibanding setting. 235 // Example value: "auto" or ANTIBANDING_XXX constants. Read/write. 236 static const char KEY_ANTIBANDING[]; 237 // Supported antibanding settings. 238 // Example value: "auto,50hz,60hz,off". Read only. 239 static const char KEY_SUPPORTED_ANTIBANDING[]; 240 // Current scene mode. 241 // Example value: "auto" or SCENE_MODE_XXX constants. Read/write. 242 static const char KEY_SCENE_MODE[]; 243 // Supported scene mode settings. 244 // Example value: "auto,night,fireworks". Read only. 245 static const char KEY_SUPPORTED_SCENE_MODES[]; 246 // Current flash mode. 247 // Example value: "auto" or FLASH_MODE_XXX constants. Read/write. 248 static const char KEY_FLASH_MODE[]; 249 // Supported flash modes. 250 // Example value: "auto,on,off". Read only. 251 static const char KEY_SUPPORTED_FLASH_MODES[]; 252 // Current focus mode. This will not be empty. Applications should call 253 // CameraHardwareInterface.autoFocus to start the focus if focus mode is 254 // FOCUS_MODE_AUTO or FOCUS_MODE_MACRO. 255 // Example value: "auto" or FOCUS_MODE_XXX constants. Read/write. 256 static const char KEY_FOCUS_MODE[]; 257 // Supported focus modes. 258 // Example value: "auto,macro,fixed". Read only. 259 static const char KEY_SUPPORTED_FOCUS_MODES[]; 260 // The maximum number of focus areas supported. This is the maximum length 261 // of KEY_FOCUS_AREAS. 262 // Example value: "0" or "2". Read only. 263 static const char KEY_MAX_NUM_FOCUS_AREAS[]; 264 // Current focus areas. 265 // 266 // Before accessing this parameter, apps should check 267 // KEY_MAX_NUM_FOCUS_AREAS first to know the maximum number of focus areas 268 // first. If the value is 0, focus area is not supported. 269 // 270 // Each focus area is a five-element int array. The first four elements are 271 // the rectangle of the area (left, top, right, bottom). The direction is 272 // relative to the sensor orientation, that is, what the sensor sees. The 273 // direction is not affected by the rotation or mirroring of 274 // CAMERA_CMD_SET_DISPLAY_ORIENTATION. Coordinates range from -1000 to 1000. 275 // (-1000,-1000) is the upper left point. (1000, 1000) is the lower right 276 // point. The width and height of focus areas cannot be 0 or negative. 277 // 278 // The fifth element is the weight. Values for weight must range from 1 to 279 // 1000. The weight should be interpreted as a per-pixel weight - all 280 // pixels in the area have the specified weight. This means a small area 281 // with the same weight as a larger area will have less influence on the 282 // focusing than the larger area. Focus areas can partially overlap and the 283 // driver will add the weights in the overlap region. 284 // 285 // A special case of single focus area (0,0,0,0,0) means driver to decide 286 // the focus area. For example, the driver may use more signals to decide 287 // focus areas and change them dynamically. Apps can set (0,0,0,0,0) if they 288 // want the driver to decide focus areas. 289 // 290 // Focus areas are relative to the current field of view (KEY_ZOOM). No 291 // matter what the zoom level is, (-1000,-1000) represents the top of the 292 // currently visible camera frame. The focus area cannot be set to be 293 // outside the current field of view, even when using zoom. 294 // 295 // Focus area only has effect if the current focus mode is FOCUS_MODE_AUTO, 296 // FOCUS_MODE_MACRO, FOCUS_MODE_CONTINUOUS_VIDEO, or 297 // FOCUS_MODE_CONTINUOUS_PICTURE. 298 // Example value: "(-10,-10,0,0,300),(0,0,10,10,700)". Read/write. 299 static const char KEY_FOCUS_AREAS[]; 300 // Focal length in millimeter. 301 // Example value: "4.31". Read only. 302 static const char KEY_FOCAL_LENGTH[]; 303 // Horizontal angle of view in degrees. 304 // Example value: "54.8". Read only. 305 static const char KEY_HORIZONTAL_VIEW_ANGLE[]; 306 // Vertical angle of view in degrees. 307 // Example value: "42.5". Read only. 308 static const char KEY_VERTICAL_VIEW_ANGLE[]; 309 // Exposure compensation index. 0 means exposure is not adjusted. 310 // Example value: "-5" or "5". Read/write. 311 static const char KEY_EXPOSURE_COMPENSATION[]; 312 // The maximum exposure compensation index (>=0). 313 // Example value: "6". Read only. 314 static const char KEY_MAX_EXPOSURE_COMPENSATION[]; 315 // The minimum exposure compensation index (<=0). 316 // Example value: "-6". Read only. 317 static const char KEY_MIN_EXPOSURE_COMPENSATION[]; 318 // The exposure compensation step. Exposure compensation index multiply by 319 // step eqals to EV. Ex: if exposure compensation index is -6 and step is 320 // 0.3333, EV is -2. 321 // Example value: "0.333333333" or "0.5". Read only. 322 static const char KEY_EXPOSURE_COMPENSATION_STEP[]; 323 // The state of the auto-exposure lock. "true" means that 324 // auto-exposure is locked to its current value and will not 325 // change. "false" means the auto-exposure routine is free to 326 // change exposure values. If auto-exposure is already locked, 327 // setting this to true again has no effect (the driver will not 328 // recalculate exposure values). Changing exposure compensation 329 // settings will still affect the exposure settings while 330 // auto-exposure is locked. Stopping preview or taking a still 331 // image will not change the lock. In conjunction with 332 // exposure compensation, this allows for capturing multi-exposure 333 // brackets with known relative exposure values. Locking 334 // auto-exposure after open but before the first call to 335 // startPreview may result in severely over- or under-exposed 336 // images. The driver will not change the AE lock after 337 // auto-focus completes. 338 static const char KEY_AUTO_EXPOSURE_LOCK[]; 339 // Whether locking the auto-exposure is supported. "true" means it is, and 340 // "false" or this key not existing means it is not supported. 341 static const char KEY_AUTO_EXPOSURE_LOCK_SUPPORTED[]; 342 // The state of the auto-white balance lock. "true" means that 343 // auto-white balance is locked to its current value and will not 344 // change. "false" means the auto-white balance routine is free to 345 // change white balance values. If auto-white balance is already 346 // locked, setting this to true again has no effect (the driver 347 // will not recalculate white balance values). Stopping preview or 348 // taking a still image will not change the lock. In conjunction 349 // with exposure compensation, this allows for capturing 350 // multi-exposure brackets with fixed white balance. Locking 351 // auto-white balance after open but before the first call to 352 // startPreview may result in severely incorrect color. The 353 // driver will not change the AWB lock after auto-focus 354 // completes. 355 static const char KEY_AUTO_WHITEBALANCE_LOCK[]; 356 // Whether locking the auto-white balance is supported. "true" 357 // means it is, and "false" or this key not existing means it is 358 // not supported. 359 static const char KEY_AUTO_WHITEBALANCE_LOCK_SUPPORTED[]; 360 361 // The maximum number of metering areas supported. This is the maximum 362 // length of KEY_METERING_AREAS. 363 // Example value: "0" or "2". Read only. 364 static const char KEY_MAX_NUM_METERING_AREAS[]; 365 // Current metering areas. Camera driver uses these areas to decide 366 // exposure. 367 // 368 // Before accessing this parameter, apps should check 369 // KEY_MAX_NUM_METERING_AREAS first to know the maximum number of metering 370 // areas first. If the value is 0, metering area is not supported. 371 // 372 // Each metering area is a rectangle with specified weight. The direction is 373 // relative to the sensor orientation, that is, what the sensor sees. The 374 // direction is not affected by the rotation or mirroring of 375 // CAMERA_CMD_SET_DISPLAY_ORIENTATION. Coordinates of the rectangle range 376 // from -1000 to 1000. (-1000, -1000) is the upper left point. (1000, 1000) 377 // is the lower right point. The width and height of metering areas cannot 378 // be 0 or negative. 379 // 380 // The fifth element is the weight. Values for weight must range from 1 to 381 // 1000. The weight should be interpreted as a per-pixel weight - all 382 // pixels in the area have the specified weight. This means a small area 383 // with the same weight as a larger area will have less influence on the 384 // metering than the larger area. Metering areas can partially overlap and 385 // the driver will add the weights in the overlap region. 386 // 387 // A special case of all-zero single metering area means driver to decide 388 // the metering area. For example, the driver may use more signals to decide 389 // metering areas and change them dynamically. Apps can set all-zero if they 390 // want the driver to decide metering areas. 391 // 392 // Metering areas are relative to the current field of view (KEY_ZOOM). 393 // No matter what the zoom level is, (-1000,-1000) represents the top of the 394 // currently visible camera frame. The metering area cannot be set to be 395 // outside the current field of view, even when using zoom. 396 // 397 // No matter what metering areas are, the final exposure are compensated 398 // by KEY_EXPOSURE_COMPENSATION. 399 // Example value: "(-10,-10,0,0,300),(0,0,10,10,700)". Read/write. 400 static const char KEY_METERING_AREAS[]; 401 // Current zoom value. 402 // Example value: "0" or "6". Read/write. 403 static const char KEY_ZOOM[]; 404 // Maximum zoom value. 405 // Example value: "6". Read only. 406 static const char KEY_MAX_ZOOM[]; 407 // The zoom ratios of all zoom values. The zoom ratio is in 1/100 408 // increments. Ex: a zoom of 3.2x is returned as 320. The number of list 409 // elements is KEY_MAX_ZOOM + 1. The first element is always 100. The last 410 // element is the zoom ratio of zoom value KEY_MAX_ZOOM. 411 // Example value: "100,150,200,250,300,350,400". Read only. 412 static const char KEY_ZOOM_RATIOS[]; 413 // Whether zoom is supported. Zoom is supported if the value is "true". Zoom 414 // is not supported if the value is not "true" or the key does not exist. 415 // Example value: "true". Read only. 416 static const char KEY_ZOOM_SUPPORTED[]; 417 // Whether if smooth zoom is supported. Smooth zoom is supported if the 418 // value is "true". It is not supported if the value is not "true" or the 419 // key does not exist. 420 // See CAMERA_CMD_START_SMOOTH_ZOOM, CAMERA_CMD_STOP_SMOOTH_ZOOM, and 421 // CAMERA_MSG_ZOOM in frameworks/base/include/camera/Camera.h. 422 // Example value: "true". Read only. 423 static const char KEY_SMOOTH_ZOOM_SUPPORTED[]; 424 425 // The distances (in meters) from the camera to where an object appears to 426 // be in focus. The object is sharpest at the optimal focus distance. The 427 // depth of field is the far focus distance minus near focus distance. 428 // 429 // Focus distances may change after starting auto focus, canceling auto 430 // focus, or starting the preview. Applications can read this anytime to get 431 // the latest focus distances. If the focus mode is FOCUS_MODE_CONTINUOUS, 432 // focus distances may change from time to time. 433 // 434 // This is intended to estimate the distance between the camera and the 435 // subject. After autofocus, the subject distance may be within near and far 436 // focus distance. However, the precision depends on the camera hardware, 437 // autofocus algorithm, the focus area, and the scene. The error can be 438 // large and it should be only used as a reference. 439 // 440 // Far focus distance > optimal focus distance > near focus distance. If 441 // the far focus distance is infinity, the value should be "Infinity" (case 442 // sensitive). The format is three float values separated by commas. The 443 // first is near focus distance. The second is optimal focus distance. The 444 // third is far focus distance. 445 // Example value: "0.95,1.9,Infinity" or "0.049,0.05,0.051". Read only. 446 static const char KEY_FOCUS_DISTANCES[]; 447 448 // The current dimensions in pixels (width x height) for video frames. 449 // The width and height must be one of the supported sizes retrieved 450 // via KEY_SUPPORTED_VIDEO_SIZES. 451 // Example value: "1280x720". Read/write. 452 static const char KEY_VIDEO_SIZE[]; 453 // A list of the supported dimensions in pixels (width x height) 454 // for video frames. See CAMERA_MSG_VIDEO_FRAME for details in 455 // frameworks/base/include/camera/Camera.h. 456 // Example: "176x144,1280x720". Read only. 457 static const char KEY_SUPPORTED_VIDEO_SIZES[]; 458 459 // The maximum number of detected faces supported by hardware face 460 // detection. If the value is 0, hardware face detection is not supported. 461 // Example: "5". Read only 462 static const char KEY_MAX_NUM_DETECTED_FACES_HW[]; 463 464 // The maximum number of detected faces supported by software face 465 // detection. If the value is 0, software face detection is not supported. 466 // Example: "5". Read only 467 static const char KEY_MAX_NUM_DETECTED_FACES_SW[]; 468 469 // Preferred preview frame size in pixels for video recording. 470 // The width and height must be one of the supported sizes retrieved 471 // via KEY_SUPPORTED_PREVIEW_SIZES. This key can be used only when 472 // getSupportedVideoSizes() does not return an empty Vector of Size. 473 // Camcorder applications are recommended to set the preview size 474 // to a value that is not larger than the preferred preview size. 475 // In other words, the product of the width and height of the 476 // preview size should not be larger than that of the preferred 477 // preview size. In addition, we recommend to choos a preview size 478 // that has the same aspect ratio as the resolution of video to be 479 // recorded. 480 // Example value: "800x600". Read only. 481 static const char KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO[]; 482 483 // The image format for video frames. See CAMERA_MSG_VIDEO_FRAME in 484 // frameworks/base/include/camera/Camera.h. 485 // Example value: "yuv420sp" or PIXEL_FORMAT_XXX constants. Read only. 486 static const char KEY_VIDEO_FRAME_FORMAT[]; 487 488 // Sets the hint of the recording mode. If this is true, MediaRecorder.start 489 // may be faster or has less glitches. This should be called before starting 490 // the preview for the best result. But it is allowed to change the hint 491 // while the preview is active. The default value is false. 492 // 493 // The apps can still call Camera.takePicture when the hint is true. The 494 // apps can call MediaRecorder.start when the hint is false. But the 495 // performance may be worse. 496 // Example value: "true" or "false". Read/write. 497 static const char KEY_RECORDING_HINT[]; 498 499 // Returns true if video snapshot is supported. That is, applications 500 // can call Camera.takePicture during recording. Applications do not need to 501 // call Camera.startPreview after taking a picture. The preview will be 502 // still active. Other than that, taking a picture during recording is 503 // identical to taking a picture normally. All settings and methods related 504 // to takePicture work identically. Ex: KEY_PICTURE_SIZE, 505 // KEY_SUPPORTED_PICTURE_SIZES, KEY_JPEG_QUALITY, KEY_ROTATION, and etc. 506 // The picture will have an EXIF header. FLASH_MODE_AUTO and FLASH_MODE_ON 507 // also still work, but the video will record the flash. 508 // 509 // Applications can set shutter callback as null to avoid the shutter 510 // sound. It is also recommended to set raw picture and post view callbacks 511 // to null to avoid the interrupt of preview display. 512 // 513 // Field-of-view of the recorded video may be different from that of the 514 // captured pictures. 515 // Example value: "true" or "false". Read only. 516 static const char KEY_VIDEO_SNAPSHOT_SUPPORTED[]; 517 518 // The state of the video stabilization. If set to true, both the 519 // preview stream and the recorded video stream are stabilized by 520 // the camera. Only valid to set if KEY_VIDEO_STABILIZATION_SUPPORTED is 521 // set to true. 522 // 523 // The value of this key can be changed any time the camera is 524 // open. If preview or recording is active, it is acceptable for 525 // there to be a slight video glitch when video stabilization is 526 // toggled on and off. 527 // 528 // This only stabilizes video streams (between-frames stabilization), and 529 // has no effect on still image capture. 530 static const char KEY_VIDEO_STABILIZATION[]; 531 532 // Returns true if video stabilization is supported. That is, applications 533 // can set KEY_VIDEO_STABILIZATION to true and have a stabilized preview 534 // stream and record stabilized videos. 535 static const char KEY_VIDEO_STABILIZATION_SUPPORTED[]; 536 537 // Supported modes for special effects with light. 538 // Example values: "lowlight,hdr". 539 static const char KEY_LIGHTFX[]; 540 541 // Value for KEY_ZOOM_SUPPORTED or KEY_SMOOTH_ZOOM_SUPPORTED. 542 static const char TRUE[]; 543 static const char FALSE[]; 544 545 // Value for KEY_FOCUS_DISTANCES. 546 static const char FOCUS_DISTANCE_INFINITY[]; 547 548 // Values for white balance settings. 549 static const char WHITE_BALANCE_AUTO[]; 550 static const char WHITE_BALANCE_INCANDESCENT[]; 551 static const char WHITE_BALANCE_FLUORESCENT[]; 552 static const char WHITE_BALANCE_WARM_FLUORESCENT[]; 553 static const char WHITE_BALANCE_DAYLIGHT[]; 554 static const char WHITE_BALANCE_CLOUDY_DAYLIGHT[]; 555 static const char WHITE_BALANCE_TWILIGHT[]; 556 static const char WHITE_BALANCE_SHADE[]; 557 558 // Values for effect settings. 559 static const char EFFECT_NONE[]; 560 static const char EFFECT_MONO[]; 561 static const char EFFECT_NEGATIVE[]; 562 static const char EFFECT_SOLARIZE[]; 563 static const char EFFECT_SEPIA[]; 564 static const char EFFECT_POSTERIZE[]; 565 static const char EFFECT_WHITEBOARD[]; 566 static const char EFFECT_BLACKBOARD[]; 567 static const char EFFECT_AQUA[]; 568 569 // Values for antibanding settings. 570 static const char ANTIBANDING_AUTO[]; 571 static const char ANTIBANDING_50HZ[]; 572 static const char ANTIBANDING_60HZ[]; 573 static const char ANTIBANDING_OFF[]; 574 575 // Values for flash mode settings. 576 // Flash will not be fired. 577 static const char FLASH_MODE_OFF[]; 578 // Flash will be fired automatically when required. The flash may be fired 579 // during preview, auto-focus, or snapshot depending on the driver. 580 static const char FLASH_MODE_AUTO[]; 581 // Flash will always be fired during snapshot. The flash may also be 582 // fired during preview or auto-focus depending on the driver. 583 static const char FLASH_MODE_ON[]; 584 // Flash will be fired in red-eye reduction mode. 585 static const char FLASH_MODE_RED_EYE[]; 586 // Constant emission of light during preview, auto-focus and snapshot. 587 // This can also be used for video recording. 588 static const char FLASH_MODE_TORCH[]; 589 590 // Values for scene mode settings. 591 static const char SCENE_MODE_AUTO[]; 592 static const char SCENE_MODE_ACTION[]; 593 static const char SCENE_MODE_PORTRAIT[]; 594 static const char SCENE_MODE_LANDSCAPE[]; 595 static const char SCENE_MODE_NIGHT[]; 596 static const char SCENE_MODE_NIGHT_PORTRAIT[]; 597 static const char SCENE_MODE_THEATRE[]; 598 static const char SCENE_MODE_BEACH[]; 599 static const char SCENE_MODE_SNOW[]; 600 static const char SCENE_MODE_SUNSET[]; 601 static const char SCENE_MODE_STEADYPHOTO[]; 602 static const char SCENE_MODE_FIREWORKS[]; 603 static const char SCENE_MODE_SPORTS[]; 604 static const char SCENE_MODE_PARTY[]; 605 static const char SCENE_MODE_CANDLELIGHT[]; 606 // Applications are looking for a barcode. Camera driver will be optimized 607 // for barcode reading. 608 static const char SCENE_MODE_BARCODE[]; 609 // A high-dynamic range mode. In this mode, the HAL module will use a 610 // capture strategy that extends the dynamic range of the captured 611 // image in some fashion. Only the final image is returned. 612 static const char SCENE_MODE_HDR[]; 613 614 // Pixel color formats for KEY_PREVIEW_FORMAT, KEY_PICTURE_FORMAT, 615 // and KEY_VIDEO_FRAME_FORMAT 616 static const char PIXEL_FORMAT_YUV422SP[]; 617 static const char PIXEL_FORMAT_YUV420SP[]; // NV21 618 static const char PIXEL_FORMAT_YUV422I[]; // YUY2 619 static const char PIXEL_FORMAT_YUV420P[]; // YV12 620 static const char PIXEL_FORMAT_RGB565[]; 621 static const char PIXEL_FORMAT_RGBA8888[]; 622 static const char PIXEL_FORMAT_JPEG[]; 623 // Raw bayer format used for images, which is 10 bit precision samples 624 // stored in 16 bit words. The filter pattern is RGGB. 625 static const char PIXEL_FORMAT_BAYER_RGGB[]; 626 // Pixel format is not known to the framework 627 static const char PIXEL_FORMAT_ANDROID_OPAQUE[]; 628 629 // Values for focus mode settings. 630 // Auto-focus mode. Applications should call 631 // CameraHardwareInterface.autoFocus to start the focus in this mode. 632 static const char FOCUS_MODE_AUTO[]; 633 // Focus is set at infinity. Applications should not call 634 // CameraHardwareInterface.autoFocus in this mode. 635 static const char FOCUS_MODE_INFINITY[]; 636 // Macro (close-up) focus mode. Applications should call 637 // CameraHardwareInterface.autoFocus to start the focus in this mode. 638 static const char FOCUS_MODE_MACRO[]; 639 // Focus is fixed. The camera is always in this mode if the focus is not 640 // adjustable. If the camera has auto-focus, this mode can fix the 641 // focus, which is usually at hyperfocal distance. Applications should 642 // not call CameraHardwareInterface.autoFocus in this mode. 643 static const char FOCUS_MODE_FIXED[]; 644 // Extended depth of field (EDOF). Focusing is done digitally and 645 // continuously. Applications should not call 646 // CameraHardwareInterface.autoFocus in this mode. 647 static const char FOCUS_MODE_EDOF[]; 648 // Continuous auto focus mode intended for video recording. The camera 649 // continuously tries to focus. This is the best choice for video 650 // recording because the focus changes smoothly . Applications still can 651 // call CameraHardwareInterface.takePicture in this mode but the subject may 652 // not be in focus. Auto focus starts when the parameter is set. 653 // 654 // Applications can call CameraHardwareInterface.autoFocus in this mode. The 655 // focus callback will immediately return with a boolean that indicates 656 // whether the focus is sharp or not. The focus position is locked after 657 // autoFocus call. If applications want to resume the continuous focus, 658 // cancelAutoFocus must be called. Restarting the preview will not resume 659 // the continuous autofocus. To stop continuous focus, applications should 660 // change the focus mode to other modes. 661 static const char FOCUS_MODE_CONTINUOUS_VIDEO[]; 662 // Continuous auto focus mode intended for taking pictures. The camera 663 // continuously tries to focus. The speed of focus change is more aggressive 664 // than FOCUS_MODE_CONTINUOUS_VIDEO. Auto focus starts when the parameter is 665 // set. 666 // 667 // Applications can call CameraHardwareInterface.autoFocus in this mode. If 668 // the autofocus is in the middle of scanning, the focus callback will 669 // return when it completes. If the autofocus is not scanning, focus 670 // callback will immediately return with a boolean that indicates whether 671 // the focus is sharp or not. The apps can then decide if they want to take 672 // a picture immediately or to change the focus mode to auto, and run a full 673 // autofocus cycle. The focus position is locked after autoFocus call. If 674 // applications want to resume the continuous focus, cancelAutoFocus must be 675 // called. Restarting the preview will not resume the continuous autofocus. 676 // To stop continuous focus, applications should change the focus mode to 677 // other modes. 678 static const char FOCUS_MODE_CONTINUOUS_PICTURE[]; 679 680 // Values for light special effects 681 // Low-light enhancement mode 682 static const char LIGHTFX_LOWLIGHT[]; 683 // High-dynamic range mode 684 static const char LIGHTFX_HDR[]; 685 686 /** 687 * Returns the the supported preview formats as an enum given in graphics.h 688 * corrsponding to the format given in the input string or -1 if no such 689 * conversion exists. 690 */ 691 static int previewFormatToEnum(const char* format); 692 693 private: 694 DefaultKeyedVector<String8,String8> mMap; 695 }; 696 697 }; // namespace android 698 699 #endif 700
