CameraParameters.cpp revision 5de9ef20d596bc20f53cba664f1ac7e358910ea2
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"; 90const char CameraParameters::KEY_VIDEO_SNAPSHOT_SUPPORTED[] = "video-snapshot-supported"; 91const char CameraParameters::KEY_VIDEO_STABILIZATION[] = "video-stabilization"; 92const char CameraParameters::KEY_VIDEO_STABILIZATION_SUPPORTED[] = "video-stabilization-supported"; 93const char CameraParameters::KEY_LIGHTFX[] = "light-fx"; 94 95const char CameraParameters::TRUE[] = "true"; 96const char CameraParameters::FALSE[] = "false"; 97const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 98 99// Values for white balance settings. 100const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 101const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 102const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 103const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 104const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 105const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 106const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 107const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 108 109// Values for effect settings. 110const char CameraParameters::EFFECT_NONE[] = "none"; 111const char CameraParameters::EFFECT_MONO[] = "mono"; 112const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 113const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 114const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 115const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 116const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 117const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 118const char CameraParameters::EFFECT_AQUA[] = "aqua"; 119 120// Values for antibanding settings. 121const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 122const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 123const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 124const char CameraParameters::ANTIBANDING_OFF[] = "off"; 125 126// Values for flash mode settings. 127const char CameraParameters::FLASH_MODE_OFF[] = "off"; 128const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 129const char CameraParameters::FLASH_MODE_ON[] = "on"; 130const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 131const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 132 133// Values for scene mode settings. 134const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 135const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 136const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 137const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 138const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 139const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 140const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 141const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 142const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 143const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 144const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 145const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 146const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 147const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 148const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 149const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 150const char CameraParameters::SCENE_MODE_HDR[] = "hdr"; 151 152const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 153const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 154const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 155const char CameraParameters::PIXEL_FORMAT_YUV420P[] = "yuv420p"; 156const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 157const char CameraParameters::PIXEL_FORMAT_RGBA8888[] = "rgba8888"; 158const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 159const char CameraParameters::PIXEL_FORMAT_BAYER_RGGB[] = "bayer-rggb"; 160const char CameraParameters::PIXEL_FORMAT_ANDROID_OPAQUE[] = "android-opaque"; 161 162// Values for focus mode settings. 163const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 164const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 165const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 166const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 167const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 168const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 169const char CameraParameters::FOCUS_MODE_CONTINUOUS_PICTURE[] = "continuous-picture"; 170 171// Values for light fx settings 172const char CameraParameters::LIGHTFX_LOWLIGHT[] = "low-light"; 173const char CameraParameters::LIGHTFX_HDR[] = "high-dynamic-range"; 174 175CameraParameters::CameraParameters() 176 : mMap() 177{ 178} 179 180CameraParameters::~CameraParameters() 181{ 182} 183 184String8 CameraParameters::flatten() const 185{ 186 String8 flattened(""); 187 size_t size = mMap.size(); 188 189 for (size_t i = 0; i < size; i++) { 190 String8 k, v; 191 k = mMap.keyAt(i); 192 v = mMap.valueAt(i); 193 194 flattened += k; 195 flattened += "="; 196 flattened += v; 197 if (i != size-1) 198 flattened += ";"; 199 } 200 201 return flattened; 202} 203 204void CameraParameters::unflatten(const String8 ¶ms) 205{ 206 const char *a = params.string(); 207 const char *b; 208 209 mMap.clear(); 210 211 for (;;) { 212 // Find the bounds of the key name. 213 b = strchr(a, '='); 214 if (b == 0) 215 break; 216 217 // Create the key string. 218 String8 k(a, (size_t)(b-a)); 219 220 // Find the value. 221 a = b+1; 222 b = strchr(a, ';'); 223 if (b == 0) { 224 // If there's no semicolon, this is the last item. 225 String8 v(a); 226 mMap.add(k, v); 227 break; 228 } 229 230 String8 v(a, (size_t)(b-a)); 231 mMap.add(k, v); 232 a = b+1; 233 } 234} 235 236 237void CameraParameters::set(const char *key, const char *value) 238{ 239 // XXX i think i can do this with strspn() 240 if (strchr(key, '=') || strchr(key, ';')) { 241 //XXX ALOGE("Key \"%s\"contains invalid character (= or ;)", key); 242 return; 243 } 244 245 if (strchr(value, '=') || strchr(value, ';')) { 246 //XXX ALOGE("Value \"%s\"contains invalid character (= or ;)", value); 247 return; 248 } 249 250 mMap.replaceValueFor(String8(key), String8(value)); 251} 252 253void CameraParameters::set(const char *key, int value) 254{ 255 char str[16]; 256 sprintf(str, "%d", value); 257 set(key, str); 258} 259 260void CameraParameters::setFloat(const char *key, float value) 261{ 262 char str[16]; // 14 should be enough. We overestimate to be safe. 263 snprintf(str, sizeof(str), "%g", value); 264 set(key, str); 265} 266 267const char *CameraParameters::get(const char *key) const 268{ 269 String8 v = mMap.valueFor(String8(key)); 270 if (v.length() == 0) 271 return 0; 272 return v.string(); 273} 274 275int CameraParameters::getInt(const char *key) const 276{ 277 const char *v = get(key); 278 if (v == 0) 279 return -1; 280 return strtol(v, 0, 0); 281} 282 283float CameraParameters::getFloat(const char *key) const 284{ 285 const char *v = get(key); 286 if (v == 0) return -1; 287 return strtof(v, 0); 288} 289 290void CameraParameters::remove(const char *key) 291{ 292 mMap.removeItem(String8(key)); 293} 294 295// Parse string like "640x480" or "10000,20000" 296static int parse_pair(const char *str, int *first, int *second, char delim, 297 char **endptr = NULL) 298{ 299 // Find the first integer. 300 char *end; 301 int w = (int)strtol(str, &end, 10); 302 // If a delimeter does not immediately follow, give up. 303 if (*end != delim) { 304 ALOGE("Cannot find delimeter (%c) in str=%s", delim, str); 305 return -1; 306 } 307 308 // Find the second integer, immediately after the delimeter. 309 int h = (int)strtol(end+1, &end, 10); 310 311 *first = w; 312 *second = h; 313 314 if (endptr) { 315 *endptr = end; 316 } 317 318 return 0; 319} 320 321static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 322{ 323 if (sizesStr == 0) { 324 return; 325 } 326 327 char *sizeStartPtr = (char *)sizesStr; 328 329 while (true) { 330 int width, height; 331 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 332 &sizeStartPtr); 333 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 334 ALOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 335 return; 336 } 337 sizes.push(Size(width, height)); 338 339 if (*sizeStartPtr == '\0') { 340 return; 341 } 342 sizeStartPtr++; 343 } 344} 345 346void CameraParameters::setPreviewSize(int width, int height) 347{ 348 char str[32]; 349 sprintf(str, "%dx%d", width, height); 350 set(KEY_PREVIEW_SIZE, str); 351} 352 353void CameraParameters::getPreviewSize(int *width, int *height) const 354{ 355 *width = *height = -1; 356 // Get the current string, if it doesn't exist, leave the -1x-1 357 const char *p = get(KEY_PREVIEW_SIZE); 358 if (p == 0) return; 359 parse_pair(p, width, height, 'x'); 360} 361 362void CameraParameters::getPreferredPreviewSizeForVideo(int *width, int *height) const 363{ 364 *width = *height = -1; 365 const char *p = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 366 if (p == 0) return; 367 parse_pair(p, width, height, 'x'); 368} 369 370void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 371{ 372 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 373 parseSizesList(previewSizesStr, sizes); 374} 375 376void CameraParameters::setVideoSize(int width, int height) 377{ 378 char str[32]; 379 sprintf(str, "%dx%d", width, height); 380 set(KEY_VIDEO_SIZE, str); 381} 382 383void CameraParameters::getVideoSize(int *width, int *height) const 384{ 385 *width = *height = -1; 386 const char *p = get(KEY_VIDEO_SIZE); 387 if (p == 0) return; 388 parse_pair(p, width, height, 'x'); 389} 390 391void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 392{ 393 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 394 parseSizesList(videoSizesStr, sizes); 395} 396 397void CameraParameters::setPreviewFrameRate(int fps) 398{ 399 set(KEY_PREVIEW_FRAME_RATE, fps); 400} 401 402int CameraParameters::getPreviewFrameRate() const 403{ 404 return getInt(KEY_PREVIEW_FRAME_RATE); 405} 406 407void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 408{ 409 *min_fps = *max_fps = -1; 410 const char *p = get(KEY_PREVIEW_FPS_RANGE); 411 if (p == 0) return; 412 parse_pair(p, min_fps, max_fps, ','); 413} 414 415void CameraParameters::setPreviewFormat(const char *format) 416{ 417 set(KEY_PREVIEW_FORMAT, format); 418} 419 420const char *CameraParameters::getPreviewFormat() const 421{ 422 return get(KEY_PREVIEW_FORMAT); 423} 424 425void CameraParameters::setPictureSize(int width, int height) 426{ 427 char str[32]; 428 sprintf(str, "%dx%d", width, height); 429 set(KEY_PICTURE_SIZE, str); 430} 431 432void CameraParameters::getPictureSize(int *width, int *height) const 433{ 434 *width = *height = -1; 435 // Get the current string, if it doesn't exist, leave the -1x-1 436 const char *p = get(KEY_PICTURE_SIZE); 437 if (p == 0) return; 438 parse_pair(p, width, height, 'x'); 439} 440 441void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 442{ 443 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 444 parseSizesList(pictureSizesStr, sizes); 445} 446 447void CameraParameters::setPictureFormat(const char *format) 448{ 449 set(KEY_PICTURE_FORMAT, format); 450} 451 452const char *CameraParameters::getPictureFormat() const 453{ 454 return get(KEY_PICTURE_FORMAT); 455} 456 457void CameraParameters::dump() const 458{ 459 ALOGD("dump: mMap.size = %d", mMap.size()); 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 ALOGD("%s: %s\n", k.string(), v.string()); 465 } 466} 467 468status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 469{ 470 const size_t SIZE = 256; 471 char buffer[SIZE]; 472 String8 result; 473 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 474 result.append(buffer); 475 for (size_t i = 0; i < mMap.size(); i++) { 476 String8 k, v; 477 k = mMap.keyAt(i); 478 v = mMap.valueAt(i); 479 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 480 result.append(buffer); 481 } 482 write(fd, result.string(), result.size()); 483 return NO_ERROR; 484} 485 486}; // namespace android 487