CameraParameters.cpp revision 7fc25dd82dec8474139315b8e905f103c13406f5
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"; 87const char CameraParameters::KEY_MAX_NUM_DETECTED_FACES_HW[] = "max-num-detected-faces-hw"; 88const char CameraParameters::KEY_MAX_NUM_DETECTED_FACES_SW[] = "max-num-detected-faces-sw"; 89 90const char CameraParameters::TRUE[] = "true"; 91const char CameraParameters::FALSE[] = "false"; 92const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 93 94// Values for white balance settings. 95const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 96const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 97const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 98const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 99const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 100const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 101const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 102const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 103 104// Values for effect settings. 105const char CameraParameters::EFFECT_NONE[] = "none"; 106const char CameraParameters::EFFECT_MONO[] = "mono"; 107const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 108const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 109const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 110const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 111const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 112const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 113const char CameraParameters::EFFECT_AQUA[] = "aqua"; 114 115// Values for antibanding settings. 116const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 117const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 118const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 119const char CameraParameters::ANTIBANDING_OFF[] = "off"; 120 121// Values for flash mode settings. 122const char CameraParameters::FLASH_MODE_OFF[] = "off"; 123const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 124const char CameraParameters::FLASH_MODE_ON[] = "on"; 125const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 126const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 127 128// Values for scene mode settings. 129const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 130const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 131const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 132const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 133const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 134const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 135const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 136const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 137const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 138const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 139const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 140const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 141const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 142const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 143const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 144const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 145 146const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 147const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 148const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 149const char CameraParameters::PIXEL_FORMAT_YUV420P[] = "yuv420p"; 150const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 151const char CameraParameters::PIXEL_FORMAT_RGBA8888[] = "rgba8888"; 152const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 153 154// Values for focus mode settings. 155const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 156const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 157const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 158const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 159const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 160const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 161 162CameraParameters::CameraParameters() 163 : mMap() 164{ 165} 166 167CameraParameters::~CameraParameters() 168{ 169} 170 171String8 CameraParameters::flatten() const 172{ 173 String8 flattened(""); 174 size_t size = mMap.size(); 175 176 for (size_t i = 0; i < size; i++) { 177 String8 k, v; 178 k = mMap.keyAt(i); 179 v = mMap.valueAt(i); 180 181 flattened += k; 182 flattened += "="; 183 flattened += v; 184 if (i != size-1) 185 flattened += ";"; 186 } 187 188 return flattened; 189} 190 191void CameraParameters::unflatten(const String8 ¶ms) 192{ 193 const char *a = params.string(); 194 const char *b; 195 196 mMap.clear(); 197 198 for (;;) { 199 // Find the bounds of the key name. 200 b = strchr(a, '='); 201 if (b == 0) 202 break; 203 204 // Create the key string. 205 String8 k(a, (size_t)(b-a)); 206 207 // Find the value. 208 a = b+1; 209 b = strchr(a, ';'); 210 if (b == 0) { 211 // If there's no semicolon, this is the last item. 212 String8 v(a); 213 mMap.add(k, v); 214 break; 215 } 216 217 String8 v(a, (size_t)(b-a)); 218 mMap.add(k, v); 219 a = b+1; 220 } 221} 222 223 224void CameraParameters::set(const char *key, const char *value) 225{ 226 // XXX i think i can do this with strspn() 227 if (strchr(key, '=') || strchr(key, ';')) { 228 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 229 return; 230 } 231 232 if (strchr(value, '=') || strchr(key, ';')) { 233 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 234 return; 235 } 236 237 mMap.replaceValueFor(String8(key), String8(value)); 238} 239 240void CameraParameters::set(const char *key, int value) 241{ 242 char str[16]; 243 sprintf(str, "%d", value); 244 set(key, str); 245} 246 247void CameraParameters::setFloat(const char *key, float value) 248{ 249 char str[16]; // 14 should be enough. We overestimate to be safe. 250 snprintf(str, sizeof(str), "%g", value); 251 set(key, str); 252} 253 254const char *CameraParameters::get(const char *key) const 255{ 256 String8 v = mMap.valueFor(String8(key)); 257 if (v.length() == 0) 258 return 0; 259 return v.string(); 260} 261 262int CameraParameters::getInt(const char *key) const 263{ 264 const char *v = get(key); 265 if (v == 0) 266 return -1; 267 return strtol(v, 0, 0); 268} 269 270float CameraParameters::getFloat(const char *key) const 271{ 272 const char *v = get(key); 273 if (v == 0) return -1; 274 return strtof(v, 0); 275} 276 277void CameraParameters::remove(const char *key) 278{ 279 mMap.removeItem(String8(key)); 280} 281 282// Parse string like "640x480" or "10000,20000" 283static int parse_pair(const char *str, int *first, int *second, char delim, 284 char **endptr = NULL) 285{ 286 // Find the first integer. 287 char *end; 288 int w = (int)strtol(str, &end, 10); 289 // If a delimeter does not immediately follow, give up. 290 if (*end != delim) { 291 LOGE("Cannot find delimeter (%c) in str=%s", delim, str); 292 return -1; 293 } 294 295 // Find the second integer, immediately after the delimeter. 296 int h = (int)strtol(end+1, &end, 10); 297 298 *first = w; 299 *second = h; 300 301 if (endptr) { 302 *endptr = end; 303 } 304 305 return 0; 306} 307 308static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 309{ 310 if (sizesStr == 0) { 311 return; 312 } 313 314 char *sizeStartPtr = (char *)sizesStr; 315 316 while (true) { 317 int width, height; 318 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 319 &sizeStartPtr); 320 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 321 LOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 322 return; 323 } 324 sizes.push(Size(width, height)); 325 326 if (*sizeStartPtr == '\0') { 327 return; 328 } 329 sizeStartPtr++; 330 } 331} 332 333void CameraParameters::setPreviewSize(int width, int height) 334{ 335 char str[32]; 336 sprintf(str, "%dx%d", width, height); 337 set(KEY_PREVIEW_SIZE, str); 338} 339 340void CameraParameters::getPreviewSize(int *width, int *height) const 341{ 342 *width = *height = -1; 343 // Get the current string, if it doesn't exist, leave the -1x-1 344 const char *p = get(KEY_PREVIEW_SIZE); 345 if (p == 0) return; 346 parse_pair(p, width, height, 'x'); 347} 348 349void CameraParameters::getPreferredPreviewSizeForVideo(int *width, int *height) const 350{ 351 *width = *height = -1; 352 const char *p = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 353 if (p == 0) return; 354 parse_pair(p, width, height, 'x'); 355} 356 357void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 358{ 359 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 360 parseSizesList(previewSizesStr, sizes); 361} 362 363void CameraParameters::setVideoSize(int width, int height) 364{ 365 char str[32]; 366 sprintf(str, "%dx%d", width, height); 367 set(KEY_VIDEO_SIZE, str); 368} 369 370void CameraParameters::getVideoSize(int *width, int *height) const 371{ 372 *width = *height = -1; 373 const char *p = get(KEY_VIDEO_SIZE); 374 if (p == 0) return; 375 parse_pair(p, width, height, 'x'); 376} 377 378void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 379{ 380 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 381 parseSizesList(videoSizesStr, sizes); 382} 383 384void CameraParameters::setPreviewFrameRate(int fps) 385{ 386 set(KEY_PREVIEW_FRAME_RATE, fps); 387} 388 389int CameraParameters::getPreviewFrameRate() const 390{ 391 return getInt(KEY_PREVIEW_FRAME_RATE); 392} 393 394void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 395{ 396 *min_fps = *max_fps = -1; 397 const char *p = get(KEY_PREVIEW_FPS_RANGE); 398 if (p == 0) return; 399 parse_pair(p, min_fps, max_fps, ','); 400} 401 402void CameraParameters::setPreviewFormat(const char *format) 403{ 404 set(KEY_PREVIEW_FORMAT, format); 405} 406 407const char *CameraParameters::getPreviewFormat() const 408{ 409 return get(KEY_PREVIEW_FORMAT); 410} 411 412void CameraParameters::setPictureSize(int width, int height) 413{ 414 char str[32]; 415 sprintf(str, "%dx%d", width, height); 416 set(KEY_PICTURE_SIZE, str); 417} 418 419void CameraParameters::getPictureSize(int *width, int *height) const 420{ 421 *width = *height = -1; 422 // Get the current string, if it doesn't exist, leave the -1x-1 423 const char *p = get(KEY_PICTURE_SIZE); 424 if (p == 0) return; 425 parse_pair(p, width, height, 'x'); 426} 427 428void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 429{ 430 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 431 parseSizesList(pictureSizesStr, sizes); 432} 433 434void CameraParameters::setPictureFormat(const char *format) 435{ 436 set(KEY_PICTURE_FORMAT, format); 437} 438 439const char *CameraParameters::getPictureFormat() const 440{ 441 return get(KEY_PICTURE_FORMAT); 442} 443 444void CameraParameters::dump() const 445{ 446 LOGD("dump: mMap.size = %d", mMap.size()); 447 for (size_t i = 0; i < mMap.size(); i++) { 448 String8 k, v; 449 k = mMap.keyAt(i); 450 v = mMap.valueAt(i); 451 LOGD("%s: %s\n", k.string(), v.string()); 452 } 453} 454 455status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 456{ 457 const size_t SIZE = 256; 458 char buffer[SIZE]; 459 String8 result; 460 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 461 result.append(buffer); 462 for (size_t i = 0; i < mMap.size(); i++) { 463 String8 k, v; 464 k = mMap.keyAt(i); 465 v = mMap.valueAt(i); 466 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 467 result.append(buffer); 468 } 469 write(fd, result.string(), result.size()); 470 return NO_ERROR; 471} 472 473}; // namespace android 474