CameraParameters.cpp revision 38ecadbeb09fc0504621f5aa513e51b7a204983f
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_MAX_NUM_METERING_AREAS[] = "max-num-metering-areas"; 72const char CameraParameters::KEY_METERING_AREAS[] = "metering-areas"; 73const char CameraParameters::KEY_ZOOM[] = "zoom"; 74const char CameraParameters::KEY_MAX_ZOOM[] = "max-zoom"; 75const char CameraParameters::KEY_ZOOM_RATIOS[] = "zoom-ratios"; 76const char CameraParameters::KEY_ZOOM_SUPPORTED[] = "zoom-supported"; 77const char CameraParameters::KEY_SMOOTH_ZOOM_SUPPORTED[] = "smooth-zoom-supported"; 78const char CameraParameters::KEY_FOCUS_DISTANCES[] = "focus-distances"; 79const char CameraParameters::KEY_VIDEO_FRAME_FORMAT[] = "video-frame-format"; 80const char CameraParameters::KEY_VIDEO_SIZE[] = "video-size"; 81const char CameraParameters::KEY_SUPPORTED_VIDEO_SIZES[] = "video-size-values"; 82const char CameraParameters::KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO[] = "preferred-preview-size-for-video"; 83 84const char CameraParameters::TRUE[] = "true"; 85const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 86 87// Values for white balance settings. 88const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 89const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 90const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 91const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 92const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 93const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 94const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 95const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 96 97// Values for effect settings. 98const char CameraParameters::EFFECT_NONE[] = "none"; 99const char CameraParameters::EFFECT_MONO[] = "mono"; 100const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 101const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 102const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 103const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 104const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 105const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 106const char CameraParameters::EFFECT_AQUA[] = "aqua"; 107 108// Values for antibanding settings. 109const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 110const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 111const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 112const char CameraParameters::ANTIBANDING_OFF[] = "off"; 113 114// Values for flash mode settings. 115const char CameraParameters::FLASH_MODE_OFF[] = "off"; 116const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 117const char CameraParameters::FLASH_MODE_ON[] = "on"; 118const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 119const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 120 121// Values for scene mode settings. 122const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 123const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 124const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 125const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 126const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 127const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 128const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 129const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 130const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 131const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 132const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 133const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 134const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 135const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 136const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 137const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 138 139const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 140const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 141const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 142const char CameraParameters::PIXEL_FORMAT_YUV420P[] = "yuv420p"; 143const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 144const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 145 146// Values for focus mode settings. 147const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 148const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 149const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 150const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 151const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 152const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 153 154CameraParameters::CameraParameters() 155 : mMap() 156{ 157} 158 159CameraParameters::~CameraParameters() 160{ 161} 162 163String8 CameraParameters::flatten() const 164{ 165 String8 flattened(""); 166 size_t size = mMap.size(); 167 168 for (size_t i = 0; i < size; i++) { 169 String8 k, v; 170 k = mMap.keyAt(i); 171 v = mMap.valueAt(i); 172 173 flattened += k; 174 flattened += "="; 175 flattened += v; 176 if (i != size-1) 177 flattened += ";"; 178 } 179 180 return flattened; 181} 182 183void CameraParameters::unflatten(const String8 ¶ms) 184{ 185 const char *a = params.string(); 186 const char *b; 187 188 mMap.clear(); 189 190 for (;;) { 191 // Find the bounds of the key name. 192 b = strchr(a, '='); 193 if (b == 0) 194 break; 195 196 // Create the key string. 197 String8 k(a, (size_t)(b-a)); 198 199 // Find the value. 200 a = b+1; 201 b = strchr(a, ';'); 202 if (b == 0) { 203 // If there's no semicolon, this is the last item. 204 String8 v(a); 205 mMap.add(k, v); 206 break; 207 } 208 209 String8 v(a, (size_t)(b-a)); 210 mMap.add(k, v); 211 a = b+1; 212 } 213} 214 215 216void CameraParameters::set(const char *key, const char *value) 217{ 218 // XXX i think i can do this with strspn() 219 if (strchr(key, '=') || strchr(key, ';')) { 220 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 221 return; 222 } 223 224 if (strchr(value, '=') || strchr(key, ';')) { 225 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 226 return; 227 } 228 229 mMap.replaceValueFor(String8(key), String8(value)); 230} 231 232void CameraParameters::set(const char *key, int value) 233{ 234 char str[16]; 235 sprintf(str, "%d", value); 236 set(key, str); 237} 238 239void CameraParameters::setFloat(const char *key, float value) 240{ 241 char str[16]; // 14 should be enough. We overestimate to be safe. 242 snprintf(str, sizeof(str), "%g", value); 243 set(key, str); 244} 245 246const char *CameraParameters::get(const char *key) const 247{ 248 String8 v = mMap.valueFor(String8(key)); 249 if (v.length() == 0) 250 return 0; 251 return v.string(); 252} 253 254int CameraParameters::getInt(const char *key) const 255{ 256 const char *v = get(key); 257 if (v == 0) 258 return -1; 259 return strtol(v, 0, 0); 260} 261 262float CameraParameters::getFloat(const char *key) const 263{ 264 const char *v = get(key); 265 if (v == 0) return -1; 266 return strtof(v, 0); 267} 268 269void CameraParameters::remove(const char *key) 270{ 271 mMap.removeItem(String8(key)); 272} 273 274// Parse string like "640x480" or "10000,20000" 275static int parse_pair(const char *str, int *first, int *second, char delim, 276 char **endptr = NULL) 277{ 278 // Find the first integer. 279 char *end; 280 int w = (int)strtol(str, &end, 10); 281 // If a delimeter does not immediately follow, give up. 282 if (*end != delim) { 283 LOGE("Cannot find delimeter (%c) in str=%s", delim, str); 284 return -1; 285 } 286 287 // Find the second integer, immediately after the delimeter. 288 int h = (int)strtol(end+1, &end, 10); 289 290 *first = w; 291 *second = h; 292 293 if (endptr) { 294 *endptr = end; 295 } 296 297 return 0; 298} 299 300static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 301{ 302 if (sizesStr == 0) { 303 return; 304 } 305 306 char *sizeStartPtr = (char *)sizesStr; 307 308 while (true) { 309 int width, height; 310 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 311 &sizeStartPtr); 312 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 313 LOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 314 return; 315 } 316 sizes.push(Size(width, height)); 317 318 if (*sizeStartPtr == '\0') { 319 return; 320 } 321 sizeStartPtr++; 322 } 323} 324 325void CameraParameters::setPreviewSize(int width, int height) 326{ 327 char str[32]; 328 sprintf(str, "%dx%d", width, height); 329 set(KEY_PREVIEW_SIZE, str); 330} 331 332void CameraParameters::getPreviewSize(int *width, int *height) const 333{ 334 *width = *height = -1; 335 // Get the current string, if it doesn't exist, leave the -1x-1 336 const char *p = get(KEY_PREVIEW_SIZE); 337 if (p == 0) return; 338 parse_pair(p, width, height, 'x'); 339} 340 341void CameraParameters::getPreferredPreviewSizeForVideo(int *width, int *height) const 342{ 343 *width = *height = -1; 344 const char *p = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 345 if (p == 0) return; 346 parse_pair(p, width, height, 'x'); 347} 348 349void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 350{ 351 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 352 parseSizesList(previewSizesStr, sizes); 353} 354 355void CameraParameters::setVideoSize(int width, int height) 356{ 357 char str[32]; 358 sprintf(str, "%dx%d", width, height); 359 set(KEY_VIDEO_SIZE, str); 360} 361 362void CameraParameters::getVideoSize(int *width, int *height) const 363{ 364 *width = *height = -1; 365 const char *p = get(KEY_VIDEO_SIZE); 366 if (p == 0) return; 367 parse_pair(p, width, height, 'x'); 368} 369 370void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 371{ 372 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 373 parseSizesList(videoSizesStr, sizes); 374} 375 376void CameraParameters::setPreviewFrameRate(int fps) 377{ 378 set(KEY_PREVIEW_FRAME_RATE, fps); 379} 380 381int CameraParameters::getPreviewFrameRate() const 382{ 383 return getInt(KEY_PREVIEW_FRAME_RATE); 384} 385 386void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 387{ 388 *min_fps = *max_fps = -1; 389 const char *p = get(KEY_PREVIEW_FPS_RANGE); 390 if (p == 0) return; 391 parse_pair(p, min_fps, max_fps, ','); 392} 393 394void CameraParameters::setPreviewFormat(const char *format) 395{ 396 set(KEY_PREVIEW_FORMAT, format); 397} 398 399const char *CameraParameters::getPreviewFormat() const 400{ 401 return get(KEY_PREVIEW_FORMAT); 402} 403 404void CameraParameters::setPictureSize(int width, int height) 405{ 406 char str[32]; 407 sprintf(str, "%dx%d", width, height); 408 set(KEY_PICTURE_SIZE, str); 409} 410 411void CameraParameters::getPictureSize(int *width, int *height) const 412{ 413 *width = *height = -1; 414 // Get the current string, if it doesn't exist, leave the -1x-1 415 const char *p = get(KEY_PICTURE_SIZE); 416 if (p == 0) return; 417 parse_pair(p, width, height, 'x'); 418} 419 420void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 421{ 422 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 423 parseSizesList(pictureSizesStr, sizes); 424} 425 426void CameraParameters::setPictureFormat(const char *format) 427{ 428 set(KEY_PICTURE_FORMAT, format); 429} 430 431const char *CameraParameters::getPictureFormat() const 432{ 433 return get(KEY_PICTURE_FORMAT); 434} 435 436void CameraParameters::dump() const 437{ 438 LOGD("dump: mMap.size = %d", mMap.size()); 439 for (size_t i = 0; i < mMap.size(); i++) { 440 String8 k, v; 441 k = mMap.keyAt(i); 442 v = mMap.valueAt(i); 443 LOGD("%s: %s\n", k.string(), v.string()); 444 } 445} 446 447status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 448{ 449 const size_t SIZE = 256; 450 char buffer[SIZE]; 451 String8 result; 452 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 453 result.append(buffer); 454 for (size_t i = 0; i < mMap.size(); i++) { 455 String8 k, v; 456 k = mMap.keyAt(i); 457 v = mMap.valueAt(i); 458 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 459 result.append(buffer); 460 } 461 write(fd, result.string(), result.size()); 462 return NO_ERROR; 463} 464 465}; // namespace android 466