CameraParameters.cpp revision 40cdc56efa47580d89a93750cefecb8ccbaf9a72
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"; 89const char CameraParameters::KEY_RECORDING_HINT[] = "recording-hint"; 90 91const char CameraParameters::TRUE[] = "true"; 92const char CameraParameters::FALSE[] = "false"; 93const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 94 95// Values for white balance settings. 96const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 97const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 98const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 99const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 100const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 101const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 102const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 103const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 104 105// Values for effect settings. 106const char CameraParameters::EFFECT_NONE[] = "none"; 107const char CameraParameters::EFFECT_MONO[] = "mono"; 108const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 109const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 110const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 111const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 112const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 113const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 114const char CameraParameters::EFFECT_AQUA[] = "aqua"; 115 116// Values for antibanding settings. 117const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 118const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 119const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 120const char CameraParameters::ANTIBANDING_OFF[] = "off"; 121 122// Values for flash mode settings. 123const char CameraParameters::FLASH_MODE_OFF[] = "off"; 124const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 125const char CameraParameters::FLASH_MODE_ON[] = "on"; 126const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 127const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 128 129// Values for scene mode settings. 130const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 131const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 132const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 133const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 134const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 135const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 136const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 137const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 138const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 139const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 140const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 141const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 142const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 143const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 144const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 145const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 146 147const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 148const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 149const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 150const char CameraParameters::PIXEL_FORMAT_YUV420P[] = "yuv420p"; 151const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 152const char CameraParameters::PIXEL_FORMAT_RGBA8888[] = "rgba8888"; 153const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 154 155// Values for focus mode settings. 156const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 157const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 158const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 159const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 160const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 161const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 162 163CameraParameters::CameraParameters() 164 : mMap() 165{ 166} 167 168CameraParameters::~CameraParameters() 169{ 170} 171 172String8 CameraParameters::flatten() const 173{ 174 String8 flattened(""); 175 size_t size = mMap.size(); 176 177 for (size_t i = 0; i < size; i++) { 178 String8 k, v; 179 k = mMap.keyAt(i); 180 v = mMap.valueAt(i); 181 182 flattened += k; 183 flattened += "="; 184 flattened += v; 185 if (i != size-1) 186 flattened += ";"; 187 } 188 189 return flattened; 190} 191 192void CameraParameters::unflatten(const String8 ¶ms) 193{ 194 const char *a = params.string(); 195 const char *b; 196 197 mMap.clear(); 198 199 for (;;) { 200 // Find the bounds of the key name. 201 b = strchr(a, '='); 202 if (b == 0) 203 break; 204 205 // Create the key string. 206 String8 k(a, (size_t)(b-a)); 207 208 // Find the value. 209 a = b+1; 210 b = strchr(a, ';'); 211 if (b == 0) { 212 // If there's no semicolon, this is the last item. 213 String8 v(a); 214 mMap.add(k, v); 215 break; 216 } 217 218 String8 v(a, (size_t)(b-a)); 219 mMap.add(k, v); 220 a = b+1; 221 } 222} 223 224 225void CameraParameters::set(const char *key, const char *value) 226{ 227 // XXX i think i can do this with strspn() 228 if (strchr(key, '=') || strchr(key, ';')) { 229 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 230 return; 231 } 232 233 if (strchr(value, '=') || strchr(key, ';')) { 234 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 235 return; 236 } 237 238 mMap.replaceValueFor(String8(key), String8(value)); 239} 240 241void CameraParameters::set(const char *key, int value) 242{ 243 char str[16]; 244 sprintf(str, "%d", value); 245 set(key, str); 246} 247 248void CameraParameters::setFloat(const char *key, float value) 249{ 250 char str[16]; // 14 should be enough. We overestimate to be safe. 251 snprintf(str, sizeof(str), "%g", value); 252 set(key, str); 253} 254 255const char *CameraParameters::get(const char *key) const 256{ 257 String8 v = mMap.valueFor(String8(key)); 258 if (v.length() == 0) 259 return 0; 260 return v.string(); 261} 262 263int CameraParameters::getInt(const char *key) const 264{ 265 const char *v = get(key); 266 if (v == 0) 267 return -1; 268 return strtol(v, 0, 0); 269} 270 271float CameraParameters::getFloat(const char *key) const 272{ 273 const char *v = get(key); 274 if (v == 0) return -1; 275 return strtof(v, 0); 276} 277 278void CameraParameters::remove(const char *key) 279{ 280 mMap.removeItem(String8(key)); 281} 282 283// Parse string like "640x480" or "10000,20000" 284static int parse_pair(const char *str, int *first, int *second, char delim, 285 char **endptr = NULL) 286{ 287 // Find the first integer. 288 char *end; 289 int w = (int)strtol(str, &end, 10); 290 // If a delimeter does not immediately follow, give up. 291 if (*end != delim) { 292 LOGE("Cannot find delimeter (%c) in str=%s", delim, str); 293 return -1; 294 } 295 296 // Find the second integer, immediately after the delimeter. 297 int h = (int)strtol(end+1, &end, 10); 298 299 *first = w; 300 *second = h; 301 302 if (endptr) { 303 *endptr = end; 304 } 305 306 return 0; 307} 308 309static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 310{ 311 if (sizesStr == 0) { 312 return; 313 } 314 315 char *sizeStartPtr = (char *)sizesStr; 316 317 while (true) { 318 int width, height; 319 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 320 &sizeStartPtr); 321 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 322 LOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 323 return; 324 } 325 sizes.push(Size(width, height)); 326 327 if (*sizeStartPtr == '\0') { 328 return; 329 } 330 sizeStartPtr++; 331 } 332} 333 334void CameraParameters::setPreviewSize(int width, int height) 335{ 336 char str[32]; 337 sprintf(str, "%dx%d", width, height); 338 set(KEY_PREVIEW_SIZE, str); 339} 340 341void CameraParameters::getPreviewSize(int *width, int *height) const 342{ 343 *width = *height = -1; 344 // Get the current string, if it doesn't exist, leave the -1x-1 345 const char *p = get(KEY_PREVIEW_SIZE); 346 if (p == 0) return; 347 parse_pair(p, width, height, 'x'); 348} 349 350void CameraParameters::getPreferredPreviewSizeForVideo(int *width, int *height) const 351{ 352 *width = *height = -1; 353 const char *p = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 354 if (p == 0) return; 355 parse_pair(p, width, height, 'x'); 356} 357 358void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 359{ 360 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 361 parseSizesList(previewSizesStr, sizes); 362} 363 364void CameraParameters::setVideoSize(int width, int height) 365{ 366 char str[32]; 367 sprintf(str, "%dx%d", width, height); 368 set(KEY_VIDEO_SIZE, str); 369} 370 371void CameraParameters::getVideoSize(int *width, int *height) const 372{ 373 *width = *height = -1; 374 const char *p = get(KEY_VIDEO_SIZE); 375 if (p == 0) return; 376 parse_pair(p, width, height, 'x'); 377} 378 379void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 380{ 381 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 382 parseSizesList(videoSizesStr, sizes); 383} 384 385void CameraParameters::setPreviewFrameRate(int fps) 386{ 387 set(KEY_PREVIEW_FRAME_RATE, fps); 388} 389 390int CameraParameters::getPreviewFrameRate() const 391{ 392 return getInt(KEY_PREVIEW_FRAME_RATE); 393} 394 395void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 396{ 397 *min_fps = *max_fps = -1; 398 const char *p = get(KEY_PREVIEW_FPS_RANGE); 399 if (p == 0) return; 400 parse_pair(p, min_fps, max_fps, ','); 401} 402 403void CameraParameters::setPreviewFormat(const char *format) 404{ 405 set(KEY_PREVIEW_FORMAT, format); 406} 407 408const char *CameraParameters::getPreviewFormat() const 409{ 410 return get(KEY_PREVIEW_FORMAT); 411} 412 413void CameraParameters::setPictureSize(int width, int height) 414{ 415 char str[32]; 416 sprintf(str, "%dx%d", width, height); 417 set(KEY_PICTURE_SIZE, str); 418} 419 420void CameraParameters::getPictureSize(int *width, int *height) const 421{ 422 *width = *height = -1; 423 // Get the current string, if it doesn't exist, leave the -1x-1 424 const char *p = get(KEY_PICTURE_SIZE); 425 if (p == 0) return; 426 parse_pair(p, width, height, 'x'); 427} 428 429void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 430{ 431 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 432 parseSizesList(pictureSizesStr, sizes); 433} 434 435void CameraParameters::setPictureFormat(const char *format) 436{ 437 set(KEY_PICTURE_FORMAT, format); 438} 439 440const char *CameraParameters::getPictureFormat() const 441{ 442 return get(KEY_PICTURE_FORMAT); 443} 444 445void CameraParameters::dump() const 446{ 447 LOGD("dump: mMap.size = %d", mMap.size()); 448 for (size_t i = 0; i < mMap.size(); i++) { 449 String8 k, v; 450 k = mMap.keyAt(i); 451 v = mMap.valueAt(i); 452 LOGD("%s: %s\n", k.string(), v.string()); 453 } 454} 455 456status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 457{ 458 const size_t SIZE = 256; 459 char buffer[SIZE]; 460 String8 result; 461 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 462 result.append(buffer); 463 for (size_t i = 0; i < mMap.size(); i++) { 464 String8 k, v; 465 k = mMap.keyAt(i); 466 v = mMap.valueAt(i); 467 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 468 result.append(buffer); 469 } 470 write(fd, result.string(), result.size()); 471 return NO_ERROR; 472} 473 474}; // namespace android 475