CameraParameters.cpp revision 0f5a6f9231e04b5c04af5dc2ad020755e2616f31
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_FOCAL_LENGTH[] = "focal-length"; 63const char CameraParameters::KEY_HORIZONTAL_VIEW_ANGLE[] = "horizontal-view-angle"; 64const char CameraParameters::KEY_VERTICAL_VIEW_ANGLE[] = "vertical-view-angle"; 65const char CameraParameters::KEY_EXPOSURE_COMPENSATION[] = "exposure-compensation"; 66const char CameraParameters::KEY_MAX_EXPOSURE_COMPENSATION[] = "max-exposure-compensation"; 67const char CameraParameters::KEY_MIN_EXPOSURE_COMPENSATION[] = "min-exposure-compensation"; 68const char CameraParameters::KEY_EXPOSURE_COMPENSATION_STEP[] = "exposure-compensation-step"; 69const char CameraParameters::KEY_ZOOM[] = "zoom"; 70const char CameraParameters::KEY_MAX_ZOOM[] = "max-zoom"; 71const char CameraParameters::KEY_ZOOM_RATIOS[] = "zoom-ratios"; 72const char CameraParameters::KEY_ZOOM_SUPPORTED[] = "zoom-supported"; 73const char CameraParameters::KEY_SMOOTH_ZOOM_SUPPORTED[] = "smooth-zoom-supported"; 74const char CameraParameters::KEY_FOCUS_DISTANCES[] = "focus-distances"; 75const char CameraParameters::KEY_VIDEO_FRAME_FORMAT[] = "video-frame-format"; 76const char CameraParameters::KEY_VIDEO_SIZE[] = "video-size"; 77const char CameraParameters::KEY_SUPPORTED_VIDEO_SIZES[] = "video-size-values"; 78const char CameraParameters::KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO[] = "preferred-preview-size-for-video"; 79 80const char CameraParameters::TRUE[] = "true"; 81const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 82 83// Values for white balance settings. 84const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 85const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 86const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 87const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 88const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 89const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 90const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 91const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 92 93// Values for effect settings. 94const char CameraParameters::EFFECT_NONE[] = "none"; 95const char CameraParameters::EFFECT_MONO[] = "mono"; 96const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 97const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 98const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 99const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 100const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 101const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 102const char CameraParameters::EFFECT_AQUA[] = "aqua"; 103 104// Values for antibanding settings. 105const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 106const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 107const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 108const char CameraParameters::ANTIBANDING_OFF[] = "off"; 109 110// Values for flash mode settings. 111const char CameraParameters::FLASH_MODE_OFF[] = "off"; 112const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 113const char CameraParameters::FLASH_MODE_ON[] = "on"; 114const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 115const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 116 117// Values for scene mode settings. 118const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 119const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 120const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 121const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 122const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 123const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 124const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 125const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 126const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 127const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 128const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 129const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 130const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 131const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 132const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 133const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 134 135const char CameraParameters::PIXEL_FORMAT_YUV420P[] = "yuv420p"; 136const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 137const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 138const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 139const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 140const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 141 142// Values for focus mode settings. 143const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 144const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 145const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 146const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 147const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 148const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 149 150CameraParameters::CameraParameters() 151 : mMap() 152{ 153} 154 155CameraParameters::~CameraParameters() 156{ 157} 158 159String8 CameraParameters::flatten() const 160{ 161 String8 flattened(""); 162 size_t size = mMap.size(); 163 164 for (size_t i = 0; i < size; i++) { 165 String8 k, v; 166 k = mMap.keyAt(i); 167 v = mMap.valueAt(i); 168 169 flattened += k; 170 flattened += "="; 171 flattened += v; 172 if (i != size-1) 173 flattened += ";"; 174 } 175 176 return flattened; 177} 178 179void CameraParameters::unflatten(const String8 ¶ms) 180{ 181 const char *a = params.string(); 182 const char *b; 183 184 mMap.clear(); 185 186 for (;;) { 187 // Find the bounds of the key name. 188 b = strchr(a, '='); 189 if (b == 0) 190 break; 191 192 // Create the key string. 193 String8 k(a, (size_t)(b-a)); 194 195 // Find the value. 196 a = b+1; 197 b = strchr(a, ';'); 198 if (b == 0) { 199 // If there's no semicolon, this is the last item. 200 String8 v(a); 201 mMap.add(k, v); 202 break; 203 } 204 205 String8 v(a, (size_t)(b-a)); 206 mMap.add(k, v); 207 a = b+1; 208 } 209} 210 211 212void CameraParameters::set(const char *key, const char *value) 213{ 214 // XXX i think i can do this with strspn() 215 if (strchr(key, '=') || strchr(key, ';')) { 216 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 217 return; 218 } 219 220 if (strchr(value, '=') || strchr(key, ';')) { 221 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 222 return; 223 } 224 225 mMap.replaceValueFor(String8(key), String8(value)); 226} 227 228void CameraParameters::set(const char *key, int value) 229{ 230 char str[16]; 231 sprintf(str, "%d", value); 232 set(key, str); 233} 234 235void CameraParameters::setFloat(const char *key, float value) 236{ 237 char str[16]; // 14 should be enough. We overestimate to be safe. 238 snprintf(str, sizeof(str), "%g", value); 239 set(key, str); 240} 241 242const char *CameraParameters::get(const char *key) const 243{ 244 String8 v = mMap.valueFor(String8(key)); 245 if (v.length() == 0) 246 return 0; 247 return v.string(); 248} 249 250int CameraParameters::getInt(const char *key) const 251{ 252 const char *v = get(key); 253 if (v == 0) 254 return -1; 255 return strtol(v, 0, 0); 256} 257 258float CameraParameters::getFloat(const char *key) const 259{ 260 const char *v = get(key); 261 if (v == 0) return -1; 262 return strtof(v, 0); 263} 264 265void CameraParameters::remove(const char *key) 266{ 267 mMap.removeItem(String8(key)); 268} 269 270// Parse string like "640x480" or "10000,20000" 271static int parse_pair(const char *str, int *first, int *second, char delim, 272 char **endptr = NULL) 273{ 274 // Find the first integer. 275 char *end; 276 int w = (int)strtol(str, &end, 10); 277 // If a delimeter does not immediately follow, give up. 278 if (*end != delim) { 279 LOGE("Cannot find delimeter (%c) in str=%s", delim, str); 280 return -1; 281 } 282 283 // Find the second integer, immediately after the delimeter. 284 int h = (int)strtol(end+1, &end, 10); 285 286 *first = w; 287 *second = h; 288 289 if (endptr) { 290 *endptr = end; 291 } 292 293 return 0; 294} 295 296static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 297{ 298 if (sizesStr == 0) { 299 return; 300 } 301 302 char *sizeStartPtr = (char *)sizesStr; 303 304 while (true) { 305 int width, height; 306 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 307 &sizeStartPtr); 308 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 309 LOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 310 return; 311 } 312 sizes.push(Size(width, height)); 313 314 if (*sizeStartPtr == '\0') { 315 return; 316 } 317 sizeStartPtr++; 318 } 319} 320 321void CameraParameters::setPreviewSize(int width, int height) 322{ 323 char str[32]; 324 sprintf(str, "%dx%d", width, height); 325 set(KEY_PREVIEW_SIZE, str); 326} 327 328void CameraParameters::getPreviewSize(int *width, int *height) const 329{ 330 *width = *height = -1; 331 // Get the current string, if it doesn't exist, leave the -1x-1 332 const char *p = get(KEY_PREVIEW_SIZE); 333 if (p == 0) return; 334 parse_pair(p, width, height, 'x'); 335} 336 337void CameraParameters::getPreferredPreviewSizeForVideo(int *width, int *height) const 338{ 339 *width = *height = -1; 340 const char *p = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 341 if (p == 0) return; 342 parse_pair(p, width, height, 'x'); 343} 344 345void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 346{ 347 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 348 parseSizesList(previewSizesStr, sizes); 349} 350 351void CameraParameters::setVideoSize(int width, int height) 352{ 353 char str[32]; 354 sprintf(str, "%dx%d", width, height); 355 set(KEY_VIDEO_SIZE, str); 356} 357 358void CameraParameters::getVideoSize(int *width, int *height) const 359{ 360 *width = *height = -1; 361 const char *p = get(KEY_VIDEO_SIZE); 362 if (p == 0) return; 363 parse_pair(p, width, height, 'x'); 364} 365 366void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 367{ 368 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 369 parseSizesList(videoSizesStr, sizes); 370} 371 372void CameraParameters::setPreviewFrameRate(int fps) 373{ 374 set(KEY_PREVIEW_FRAME_RATE, fps); 375} 376 377int CameraParameters::getPreviewFrameRate() const 378{ 379 return getInt(KEY_PREVIEW_FRAME_RATE); 380} 381 382void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 383{ 384 *min_fps = *max_fps = -1; 385 const char *p = get(KEY_PREVIEW_FPS_RANGE); 386 if (p == 0) return; 387 parse_pair(p, min_fps, max_fps, ','); 388} 389 390void CameraParameters::setPreviewFormat(const char *format) 391{ 392 set(KEY_PREVIEW_FORMAT, format); 393} 394 395const char *CameraParameters::getPreviewFormat() const 396{ 397 return get(KEY_PREVIEW_FORMAT); 398} 399 400void CameraParameters::setPictureSize(int width, int height) 401{ 402 char str[32]; 403 sprintf(str, "%dx%d", width, height); 404 set(KEY_PICTURE_SIZE, str); 405} 406 407void CameraParameters::getPictureSize(int *width, int *height) const 408{ 409 *width = *height = -1; 410 // Get the current string, if it doesn't exist, leave the -1x-1 411 const char *p = get(KEY_PICTURE_SIZE); 412 if (p == 0) return; 413 parse_pair(p, width, height, 'x'); 414} 415 416void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 417{ 418 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 419 parseSizesList(pictureSizesStr, sizes); 420} 421 422void CameraParameters::setPictureFormat(const char *format) 423{ 424 set(KEY_PICTURE_FORMAT, format); 425} 426 427const char *CameraParameters::getPictureFormat() const 428{ 429 return get(KEY_PICTURE_FORMAT); 430} 431 432void CameraParameters::dump() const 433{ 434 LOGD("dump: mMap.size = %d", mMap.size()); 435 for (size_t i = 0; i < mMap.size(); i++) { 436 String8 k, v; 437 k = mMap.keyAt(i); 438 v = mMap.valueAt(i); 439 LOGD("%s: %s\n", k.string(), v.string()); 440 } 441} 442 443status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 444{ 445 const size_t SIZE = 256; 446 char buffer[SIZE]; 447 String8 result; 448 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 449 result.append(buffer); 450 for (size_t i = 0; i < mMap.size(); i++) { 451 String8 k, v; 452 k = mMap.keyAt(i); 453 v = mMap.valueAt(i); 454 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 455 result.append(buffer); 456 } 457 write(fd, result.string(), result.size()); 458 return NO_ERROR; 459} 460 461}; // namespace android 462