CameraParameters.cpp revision 5e7271d6e24efb891e0de141a06228c99866f49f
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_RGBA8888[] = "rgba8888"; 150const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 151 152// Values for focus mode settings. 153const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 154const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 155const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 156const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 157const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 158const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 159 160CameraParameters::CameraParameters() 161 : mMap() 162{ 163} 164 165CameraParameters::~CameraParameters() 166{ 167} 168 169String8 CameraParameters::flatten() const 170{ 171 String8 flattened(""); 172 size_t size = mMap.size(); 173 174 for (size_t i = 0; i < size; i++) { 175 String8 k, v; 176 k = mMap.keyAt(i); 177 v = mMap.valueAt(i); 178 179 flattened += k; 180 flattened += "="; 181 flattened += v; 182 if (i != size-1) 183 flattened += ";"; 184 } 185 186 return flattened; 187} 188 189void CameraParameters::unflatten(const String8 ¶ms) 190{ 191 const char *a = params.string(); 192 const char *b; 193 194 mMap.clear(); 195 196 for (;;) { 197 // Find the bounds of the key name. 198 b = strchr(a, '='); 199 if (b == 0) 200 break; 201 202 // Create the key string. 203 String8 k(a, (size_t)(b-a)); 204 205 // Find the value. 206 a = b+1; 207 b = strchr(a, ';'); 208 if (b == 0) { 209 // If there's no semicolon, this is the last item. 210 String8 v(a); 211 mMap.add(k, v); 212 break; 213 } 214 215 String8 v(a, (size_t)(b-a)); 216 mMap.add(k, v); 217 a = b+1; 218 } 219} 220 221 222void CameraParameters::set(const char *key, const char *value) 223{ 224 // XXX i think i can do this with strspn() 225 if (strchr(key, '=') || strchr(key, ';')) { 226 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 227 return; 228 } 229 230 if (strchr(value, '=') || strchr(key, ';')) { 231 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 232 return; 233 } 234 235 mMap.replaceValueFor(String8(key), String8(value)); 236} 237 238void CameraParameters::set(const char *key, int value) 239{ 240 char str[16]; 241 sprintf(str, "%d", value); 242 set(key, str); 243} 244 245void CameraParameters::setFloat(const char *key, float value) 246{ 247 char str[16]; // 14 should be enough. We overestimate to be safe. 248 snprintf(str, sizeof(str), "%g", value); 249 set(key, str); 250} 251 252const char *CameraParameters::get(const char *key) const 253{ 254 String8 v = mMap.valueFor(String8(key)); 255 if (v.length() == 0) 256 return 0; 257 return v.string(); 258} 259 260int CameraParameters::getInt(const char *key) const 261{ 262 const char *v = get(key); 263 if (v == 0) 264 return -1; 265 return strtol(v, 0, 0); 266} 267 268float CameraParameters::getFloat(const char *key) const 269{ 270 const char *v = get(key); 271 if (v == 0) return -1; 272 return strtof(v, 0); 273} 274 275void CameraParameters::remove(const char *key) 276{ 277 mMap.removeItem(String8(key)); 278} 279 280// Parse string like "640x480" or "10000,20000" 281static int parse_pair(const char *str, int *first, int *second, char delim, 282 char **endptr = NULL) 283{ 284 // Find the first integer. 285 char *end; 286 int w = (int)strtol(str, &end, 10); 287 // If a delimeter does not immediately follow, give up. 288 if (*end != delim) { 289 LOGE("Cannot find delimeter (%c) in str=%s", delim, str); 290 return -1; 291 } 292 293 // Find the second integer, immediately after the delimeter. 294 int h = (int)strtol(end+1, &end, 10); 295 296 *first = w; 297 *second = h; 298 299 if (endptr) { 300 *endptr = end; 301 } 302 303 return 0; 304} 305 306static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 307{ 308 if (sizesStr == 0) { 309 return; 310 } 311 312 char *sizeStartPtr = (char *)sizesStr; 313 314 while (true) { 315 int width, height; 316 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 317 &sizeStartPtr); 318 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 319 LOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 320 return; 321 } 322 sizes.push(Size(width, height)); 323 324 if (*sizeStartPtr == '\0') { 325 return; 326 } 327 sizeStartPtr++; 328 } 329} 330 331void CameraParameters::setPreviewSize(int width, int height) 332{ 333 char str[32]; 334 sprintf(str, "%dx%d", width, height); 335 set(KEY_PREVIEW_SIZE, str); 336} 337 338void CameraParameters::getPreviewSize(int *width, int *height) const 339{ 340 *width = *height = -1; 341 // Get the current string, if it doesn't exist, leave the -1x-1 342 const char *p = get(KEY_PREVIEW_SIZE); 343 if (p == 0) return; 344 parse_pair(p, width, height, 'x'); 345} 346 347void CameraParameters::getPreferredPreviewSizeForVideo(int *width, int *height) const 348{ 349 *width = *height = -1; 350 const char *p = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 351 if (p == 0) return; 352 parse_pair(p, width, height, 'x'); 353} 354 355void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 356{ 357 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 358 parseSizesList(previewSizesStr, sizes); 359} 360 361void CameraParameters::setVideoSize(int width, int height) 362{ 363 char str[32]; 364 sprintf(str, "%dx%d", width, height); 365 set(KEY_VIDEO_SIZE, str); 366} 367 368void CameraParameters::getVideoSize(int *width, int *height) const 369{ 370 *width = *height = -1; 371 const char *p = get(KEY_VIDEO_SIZE); 372 if (p == 0) return; 373 parse_pair(p, width, height, 'x'); 374} 375 376void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 377{ 378 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 379 parseSizesList(videoSizesStr, sizes); 380} 381 382void CameraParameters::setPreviewFrameRate(int fps) 383{ 384 set(KEY_PREVIEW_FRAME_RATE, fps); 385} 386 387int CameraParameters::getPreviewFrameRate() const 388{ 389 return getInt(KEY_PREVIEW_FRAME_RATE); 390} 391 392void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 393{ 394 *min_fps = *max_fps = -1; 395 const char *p = get(KEY_PREVIEW_FPS_RANGE); 396 if (p == 0) return; 397 parse_pair(p, min_fps, max_fps, ','); 398} 399 400void CameraParameters::setPreviewFormat(const char *format) 401{ 402 set(KEY_PREVIEW_FORMAT, format); 403} 404 405const char *CameraParameters::getPreviewFormat() const 406{ 407 return get(KEY_PREVIEW_FORMAT); 408} 409 410void CameraParameters::setPictureSize(int width, int height) 411{ 412 char str[32]; 413 sprintf(str, "%dx%d", width, height); 414 set(KEY_PICTURE_SIZE, str); 415} 416 417void CameraParameters::getPictureSize(int *width, int *height) const 418{ 419 *width = *height = -1; 420 // Get the current string, if it doesn't exist, leave the -1x-1 421 const char *p = get(KEY_PICTURE_SIZE); 422 if (p == 0) return; 423 parse_pair(p, width, height, 'x'); 424} 425 426void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 427{ 428 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 429 parseSizesList(pictureSizesStr, sizes); 430} 431 432void CameraParameters::setPictureFormat(const char *format) 433{ 434 set(KEY_PICTURE_FORMAT, format); 435} 436 437const char *CameraParameters::getPictureFormat() const 438{ 439 return get(KEY_PICTURE_FORMAT); 440} 441 442void CameraParameters::dump() const 443{ 444 LOGD("dump: mMap.size = %d", mMap.size()); 445 for (size_t i = 0; i < mMap.size(); i++) { 446 String8 k, v; 447 k = mMap.keyAt(i); 448 v = mMap.valueAt(i); 449 LOGD("%s: %s\n", k.string(), v.string()); 450 } 451} 452 453status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 454{ 455 const size_t SIZE = 256; 456 char buffer[SIZE]; 457 String8 result; 458 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 459 result.append(buffer); 460 for (size_t i = 0; i < mMap.size(); i++) { 461 String8 k, v; 462 k = mMap.keyAt(i); 463 v = mMap.valueAt(i); 464 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 465 result.append(buffer); 466 } 467 write(fd, result.string(), result.size()); 468 return NO_ERROR; 469} 470 471}; // namespace android 472