CameraParameters.cpp revision fd99e1dda6a46ac3312cacb3bc1b633b2df95df2
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#define LOG_TAG "CameraParams" 19#include <utils/Log.h> 20 21#include <string.h> 22#include <stdlib.h> 23#include <camera/CameraParameters.h> 24 25namespace android { 26// Parameter keys to communicate between camera application and driver. 27const char CameraParameters::KEY_PREVIEW_SIZE[] = "preview-size"; 28const char CameraParameters::KEY_SUPPORTED_PREVIEW_SIZES[] = "preview-size-values"; 29const char CameraParameters::KEY_PREVIEW_FORMAT[] = "preview-format"; 30const char CameraParameters::KEY_SUPPORTED_PREVIEW_FORMATS[] = "preview-format-values"; 31const char CameraParameters::KEY_PREVIEW_FRAME_RATE[] = "preview-frame-rate"; 32const char CameraParameters::KEY_SUPPORTED_PREVIEW_FRAME_RATES[] = "preview-frame-rate-values"; 33const char CameraParameters::KEY_PREVIEW_FPS_RANGE[] = "preview-fps-range"; 34const char CameraParameters::KEY_SUPPORTED_PREVIEW_FPS_RANGE[] = "preview-fps-range-values"; 35const char CameraParameters::KEY_PICTURE_SIZE[] = "picture-size"; 36const char CameraParameters::KEY_SUPPORTED_PICTURE_SIZES[] = "picture-size-values"; 37const char CameraParameters::KEY_PICTURE_FORMAT[] = "picture-format"; 38const char CameraParameters::KEY_SUPPORTED_PICTURE_FORMATS[] = "picture-format-values"; 39const char CameraParameters::KEY_JPEG_THUMBNAIL_WIDTH[] = "jpeg-thumbnail-width"; 40const char CameraParameters::KEY_JPEG_THUMBNAIL_HEIGHT[] = "jpeg-thumbnail-height"; 41const char CameraParameters::KEY_SUPPORTED_JPEG_THUMBNAIL_SIZES[] = "jpeg-thumbnail-size-values"; 42const char CameraParameters::KEY_JPEG_THUMBNAIL_QUALITY[] = "jpeg-thumbnail-quality"; 43const char CameraParameters::KEY_JPEG_QUALITY[] = "jpeg-quality"; 44const char CameraParameters::KEY_ROTATION[] = "rotation"; 45const char CameraParameters::KEY_GPS_LATITUDE[] = "gps-latitude"; 46const char CameraParameters::KEY_GPS_LONGITUDE[] = "gps-longitude"; 47const char CameraParameters::KEY_GPS_ALTITUDE[] = "gps-altitude"; 48const char CameraParameters::KEY_GPS_TIMESTAMP[] = "gps-timestamp"; 49const char CameraParameters::KEY_GPS_PROCESSING_METHOD[] = "gps-processing-method"; 50const char CameraParameters::KEY_WHITE_BALANCE[] = "whitebalance"; 51const char CameraParameters::KEY_SUPPORTED_WHITE_BALANCE[] = "whitebalance-values"; 52const char CameraParameters::KEY_EFFECT[] = "effect"; 53const char CameraParameters::KEY_SUPPORTED_EFFECTS[] = "effect-values"; 54const char CameraParameters::KEY_ANTIBANDING[] = "antibanding"; 55const char CameraParameters::KEY_SUPPORTED_ANTIBANDING[] = "antibanding-values"; 56const char CameraParameters::KEY_SCENE_MODE[] = "scene-mode"; 57const char CameraParameters::KEY_SUPPORTED_SCENE_MODES[] = "scene-mode-values"; 58const char CameraParameters::KEY_FLASH_MODE[] = "flash-mode"; 59const char CameraParameters::KEY_SUPPORTED_FLASH_MODES[] = "flash-mode-values"; 60const char CameraParameters::KEY_FOCUS_MODE[] = "focus-mode"; 61const char CameraParameters::KEY_SUPPORTED_FOCUS_MODES[] = "focus-mode-values"; 62const char CameraParameters::KEY_MAX_NUM_FOCUS_AREAS[] = "max-num-focus-areas"; 63const char CameraParameters::KEY_FOCUS_AREAS[] = "focus-areas"; 64const char CameraParameters::KEY_FOCAL_LENGTH[] = "focal-length"; 65const char CameraParameters::KEY_HORIZONTAL_VIEW_ANGLE[] = "horizontal-view-angle"; 66const char CameraParameters::KEY_VERTICAL_VIEW_ANGLE[] = "vertical-view-angle"; 67const char CameraParameters::KEY_EXPOSURE_COMPENSATION[] = "exposure-compensation"; 68const char CameraParameters::KEY_MAX_EXPOSURE_COMPENSATION[] = "max-exposure-compensation"; 69const char CameraParameters::KEY_MIN_EXPOSURE_COMPENSATION[] = "min-exposure-compensation"; 70const char CameraParameters::KEY_EXPOSURE_COMPENSATION_STEP[] = "exposure-compensation-step"; 71const char CameraParameters::KEY_AUTO_EXPOSURE_LOCK[] = "auto-exposure-lock"; 72const char CameraParameters::KEY_AUTO_EXPOSURE_LOCK_SUPPORTED[] = "auto-exposure-lock-supported"; 73const char CameraParameters::KEY_AUTO_WHITEBALANCE_LOCK[] = "auto-whitebalance-lock"; 74const char CameraParameters::KEY_AUTO_WHITEBALANCE_LOCK_SUPPORTED[] = "auto-whitebalance-lock-supported"; 75const char CameraParameters::KEY_MAX_NUM_METERING_AREAS[] = "max-num-metering-areas"; 76const char CameraParameters::KEY_METERING_AREAS[] = "metering-areas"; 77const char CameraParameters::KEY_ZOOM[] = "zoom"; 78const char CameraParameters::KEY_MAX_ZOOM[] = "max-zoom"; 79const char CameraParameters::KEY_ZOOM_RATIOS[] = "zoom-ratios"; 80const char CameraParameters::KEY_ZOOM_SUPPORTED[] = "zoom-supported"; 81const char CameraParameters::KEY_SMOOTH_ZOOM_SUPPORTED[] = "smooth-zoom-supported"; 82const char CameraParameters::KEY_FOCUS_DISTANCES[] = "focus-distances"; 83const char CameraParameters::KEY_VIDEO_FRAME_FORMAT[] = "video-frame-format"; 84const char CameraParameters::KEY_VIDEO_SIZE[] = "video-size"; 85const char CameraParameters::KEY_SUPPORTED_VIDEO_SIZES[] = "video-size-values"; 86const char CameraParameters::KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO[] = "preferred-preview-size-for-video"; 87 88const char CameraParameters::TRUE[] = "true"; 89const char CameraParameters::FALSE[] = "false"; 90const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 91 92// Values for white balance settings. 93const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 94const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 95const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 96const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 97const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 98const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 99const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 100const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 101 102// Values for effect settings. 103const char CameraParameters::EFFECT_NONE[] = "none"; 104const char CameraParameters::EFFECT_MONO[] = "mono"; 105const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 106const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 107const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 108const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 109const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 110const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 111const char CameraParameters::EFFECT_AQUA[] = "aqua"; 112 113// Values for antibanding settings. 114const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 115const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 116const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 117const char CameraParameters::ANTIBANDING_OFF[] = "off"; 118 119// Values for flash mode settings. 120const char CameraParameters::FLASH_MODE_OFF[] = "off"; 121const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 122const char CameraParameters::FLASH_MODE_ON[] = "on"; 123const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 124const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 125 126// Values for scene mode settings. 127const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 128const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 129const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 130const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 131const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 132const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 133const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 134const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 135const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 136const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 137const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 138const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 139const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 140const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 141const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 142const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 143 144const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 145const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 146const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 147const char CameraParameters::PIXEL_FORMAT_YUV420P[] = "yuv420p"; 148const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 149const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 150 151// Values for focus mode settings. 152const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 153const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 154const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 155const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 156const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 157const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 158 159CameraParameters::CameraParameters() 160 : mMap() 161{ 162} 163 164CameraParameters::~CameraParameters() 165{ 166} 167 168String8 CameraParameters::flatten() const 169{ 170 String8 flattened(""); 171 size_t size = mMap.size(); 172 173 for (size_t i = 0; i < size; i++) { 174 String8 k, v; 175 k = mMap.keyAt(i); 176 v = mMap.valueAt(i); 177 178 flattened += k; 179 flattened += "="; 180 flattened += v; 181 if (i != size-1) 182 flattened += ";"; 183 } 184 185 return flattened; 186} 187 188void CameraParameters::unflatten(const String8 ¶ms) 189{ 190 const char *a = params.string(); 191 const char *b; 192 193 mMap.clear(); 194 195 for (;;) { 196 // Find the bounds of the key name. 197 b = strchr(a, '='); 198 if (b == 0) 199 break; 200 201 // Create the key string. 202 String8 k(a, (size_t)(b-a)); 203 204 // Find the value. 205 a = b+1; 206 b = strchr(a, ';'); 207 if (b == 0) { 208 // If there's no semicolon, this is the last item. 209 String8 v(a); 210 mMap.add(k, v); 211 break; 212 } 213 214 String8 v(a, (size_t)(b-a)); 215 mMap.add(k, v); 216 a = b+1; 217 } 218} 219 220 221void CameraParameters::set(const char *key, const char *value) 222{ 223 // XXX i think i can do this with strspn() 224 if (strchr(key, '=') || strchr(key, ';')) { 225 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 226 return; 227 } 228 229 if (strchr(value, '=') || strchr(key, ';')) { 230 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 231 return; 232 } 233 234 mMap.replaceValueFor(String8(key), String8(value)); 235} 236 237void CameraParameters::set(const char *key, int value) 238{ 239 char str[16]; 240 sprintf(str, "%d", value); 241 set(key, str); 242} 243 244void CameraParameters::setFloat(const char *key, float value) 245{ 246 char str[16]; // 14 should be enough. We overestimate to be safe. 247 snprintf(str, sizeof(str), "%g", value); 248 set(key, str); 249} 250 251const char *CameraParameters::get(const char *key) const 252{ 253 String8 v = mMap.valueFor(String8(key)); 254 if (v.length() == 0) 255 return 0; 256 return v.string(); 257} 258 259int CameraParameters::getInt(const char *key) const 260{ 261 const char *v = get(key); 262 if (v == 0) 263 return -1; 264 return strtol(v, 0, 0); 265} 266 267float CameraParameters::getFloat(const char *key) const 268{ 269 const char *v = get(key); 270 if (v == 0) return -1; 271 return strtof(v, 0); 272} 273 274void CameraParameters::remove(const char *key) 275{ 276 mMap.removeItem(String8(key)); 277} 278 279// Parse string like "640x480" or "10000,20000" 280static int parse_pair(const char *str, int *first, int *second, char delim, 281 char **endptr = NULL) 282{ 283 // Find the first integer. 284 char *end; 285 int w = (int)strtol(str, &end, 10); 286 // If a delimeter does not immediately follow, give up. 287 if (*end != delim) { 288 LOGE("Cannot find delimeter (%c) in str=%s", delim, str); 289 return -1; 290 } 291 292 // Find the second integer, immediately after the delimeter. 293 int h = (int)strtol(end+1, &end, 10); 294 295 *first = w; 296 *second = h; 297 298 if (endptr) { 299 *endptr = end; 300 } 301 302 return 0; 303} 304 305static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 306{ 307 if (sizesStr == 0) { 308 return; 309 } 310 311 char *sizeStartPtr = (char *)sizesStr; 312 313 while (true) { 314 int width, height; 315 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 316 &sizeStartPtr); 317 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 318 LOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 319 return; 320 } 321 sizes.push(Size(width, height)); 322 323 if (*sizeStartPtr == '\0') { 324 return; 325 } 326 sizeStartPtr++; 327 } 328} 329 330void CameraParameters::setPreviewSize(int width, int height) 331{ 332 char str[32]; 333 sprintf(str, "%dx%d", width, height); 334 set(KEY_PREVIEW_SIZE, str); 335} 336 337void CameraParameters::getPreviewSize(int *width, int *height) const 338{ 339 *width = *height = -1; 340 // Get the current string, if it doesn't exist, leave the -1x-1 341 const char *p = get(KEY_PREVIEW_SIZE); 342 if (p == 0) return; 343 parse_pair(p, width, height, 'x'); 344} 345 346void CameraParameters::getPreferredPreviewSizeForVideo(int *width, int *height) const 347{ 348 *width = *height = -1; 349 const char *p = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 350 if (p == 0) return; 351 parse_pair(p, width, height, 'x'); 352} 353 354void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 355{ 356 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 357 parseSizesList(previewSizesStr, sizes); 358} 359 360void CameraParameters::setVideoSize(int width, int height) 361{ 362 char str[32]; 363 sprintf(str, "%dx%d", width, height); 364 set(KEY_VIDEO_SIZE, str); 365} 366 367void CameraParameters::getVideoSize(int *width, int *height) const 368{ 369 *width = *height = -1; 370 const char *p = get(KEY_VIDEO_SIZE); 371 if (p == 0) return; 372 parse_pair(p, width, height, 'x'); 373} 374 375void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 376{ 377 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 378 parseSizesList(videoSizesStr, sizes); 379} 380 381void CameraParameters::setPreviewFrameRate(int fps) 382{ 383 set(KEY_PREVIEW_FRAME_RATE, fps); 384} 385 386int CameraParameters::getPreviewFrameRate() const 387{ 388 return getInt(KEY_PREVIEW_FRAME_RATE); 389} 390 391void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 392{ 393 *min_fps = *max_fps = -1; 394 const char *p = get(KEY_PREVIEW_FPS_RANGE); 395 if (p == 0) return; 396 parse_pair(p, min_fps, max_fps, ','); 397} 398 399void CameraParameters::setPreviewFormat(const char *format) 400{ 401 set(KEY_PREVIEW_FORMAT, format); 402} 403 404const char *CameraParameters::getPreviewFormat() const 405{ 406 return get(KEY_PREVIEW_FORMAT); 407} 408 409void CameraParameters::setPictureSize(int width, int height) 410{ 411 char str[32]; 412 sprintf(str, "%dx%d", width, height); 413 set(KEY_PICTURE_SIZE, str); 414} 415 416void CameraParameters::getPictureSize(int *width, int *height) const 417{ 418 *width = *height = -1; 419 // Get the current string, if it doesn't exist, leave the -1x-1 420 const char *p = get(KEY_PICTURE_SIZE); 421 if (p == 0) return; 422 parse_pair(p, width, height, 'x'); 423} 424 425void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 426{ 427 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 428 parseSizesList(pictureSizesStr, sizes); 429} 430 431void CameraParameters::setPictureFormat(const char *format) 432{ 433 set(KEY_PICTURE_FORMAT, format); 434} 435 436const char *CameraParameters::getPictureFormat() const 437{ 438 return get(KEY_PICTURE_FORMAT); 439} 440 441void CameraParameters::dump() const 442{ 443 LOGD("dump: mMap.size = %d", mMap.size()); 444 for (size_t i = 0; i < mMap.size(); i++) { 445 String8 k, v; 446 k = mMap.keyAt(i); 447 v = mMap.valueAt(i); 448 LOGD("%s: %s\n", k.string(), v.string()); 449 } 450} 451 452status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 453{ 454 const size_t SIZE = 256; 455 char buffer[SIZE]; 456 String8 result; 457 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 458 result.append(buffer); 459 for (size_t i = 0; i < mMap.size(); i++) { 460 String8 k, v; 461 k = mMap.keyAt(i); 462 v = mMap.valueAt(i); 463 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 464 result.append(buffer); 465 } 466 write(fd, result.string(), result.size()); 467 return NO_ERROR; 468} 469 470}; // namespace android 471