CameraParameters.cpp revision 4c18eb30b493a4cd8d56bbcf8acb526b97c401a4
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"; 93 94const char CameraParameters::TRUE[] = "true"; 95const char CameraParameters::FALSE[] = "false"; 96const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 97 98// Values for white balance settings. 99const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 100const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 101const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 102const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 103const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 104const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 105const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 106const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 107 108// Values for effect settings. 109const char CameraParameters::EFFECT_NONE[] = "none"; 110const char CameraParameters::EFFECT_MONO[] = "mono"; 111const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 112const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 113const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 114const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 115const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 116const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 117const char CameraParameters::EFFECT_AQUA[] = "aqua"; 118 119// Values for antibanding settings. 120const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 121const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 122const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 123const char CameraParameters::ANTIBANDING_OFF[] = "off"; 124 125// Values for flash mode settings. 126const char CameraParameters::FLASH_MODE_OFF[] = "off"; 127const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 128const char CameraParameters::FLASH_MODE_ON[] = "on"; 129const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 130const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 131 132// Values for scene mode settings. 133const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 134const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 135const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 136const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 137const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 138const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 139const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 140const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 141const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 142const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 143const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 144const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 145const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 146const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 147const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 148const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 149const char CameraParameters::SCENE_MODE_HDR[] = "hdr"; 150 151const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 152const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 153const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 154const char CameraParameters::PIXEL_FORMAT_YUV420P[] = "yuv420p"; 155const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 156const char CameraParameters::PIXEL_FORMAT_RGBA8888[] = "rgba8888"; 157const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 158const char CameraParameters::PIXEL_FORMAT_BAYER_RGGB[] = "bayer-rggb"; 159const char CameraParameters::PIXEL_FORMAT_ANDROID_OPAQUE[] = "android-opaque"; 160 161// Values for focus mode settings. 162const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 163const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 164const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 165const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 166const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 167const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 168const char CameraParameters::FOCUS_MODE_CONTINUOUS_PICTURE[] = "continuous-picture"; 169 170CameraParameters::CameraParameters() 171 : mMap() 172{ 173} 174 175CameraParameters::~CameraParameters() 176{ 177} 178 179String8 CameraParameters::flatten() const 180{ 181 String8 flattened(""); 182 size_t size = mMap.size(); 183 184 for (size_t i = 0; i < size; i++) { 185 String8 k, v; 186 k = mMap.keyAt(i); 187 v = mMap.valueAt(i); 188 189 flattened += k; 190 flattened += "="; 191 flattened += v; 192 if (i != size-1) 193 flattened += ";"; 194 } 195 196 return flattened; 197} 198 199void CameraParameters::unflatten(const String8 ¶ms) 200{ 201 const char *a = params.string(); 202 const char *b; 203 204 mMap.clear(); 205 206 for (;;) { 207 // Find the bounds of the key name. 208 b = strchr(a, '='); 209 if (b == 0) 210 break; 211 212 // Create the key string. 213 String8 k(a, (size_t)(b-a)); 214 215 // Find the value. 216 a = b+1; 217 b = strchr(a, ';'); 218 if (b == 0) { 219 // If there's no semicolon, this is the last item. 220 String8 v(a); 221 mMap.add(k, v); 222 break; 223 } 224 225 String8 v(a, (size_t)(b-a)); 226 mMap.add(k, v); 227 a = b+1; 228 } 229} 230 231 232void CameraParameters::set(const char *key, const char *value) 233{ 234 // XXX i think i can do this with strspn() 235 if (strchr(key, '=') || strchr(key, ';')) { 236 //XXX ALOGE("Key \"%s\"contains invalid character (= or ;)", key); 237 return; 238 } 239 240 if (strchr(value, '=') || strchr(value, ';')) { 241 //XXX ALOGE("Value \"%s\"contains invalid character (= or ;)", value); 242 return; 243 } 244 245 mMap.replaceValueFor(String8(key), String8(value)); 246} 247 248void CameraParameters::set(const char *key, int value) 249{ 250 char str[16]; 251 sprintf(str, "%d", value); 252 set(key, str); 253} 254 255void CameraParameters::setFloat(const char *key, float value) 256{ 257 char str[16]; // 14 should be enough. We overestimate to be safe. 258 snprintf(str, sizeof(str), "%g", value); 259 set(key, str); 260} 261 262const char *CameraParameters::get(const char *key) const 263{ 264 String8 v = mMap.valueFor(String8(key)); 265 if (v.length() == 0) 266 return 0; 267 return v.string(); 268} 269 270int CameraParameters::getInt(const char *key) const 271{ 272 const char *v = get(key); 273 if (v == 0) 274 return -1; 275 return strtol(v, 0, 0); 276} 277 278float CameraParameters::getFloat(const char *key) const 279{ 280 const char *v = get(key); 281 if (v == 0) return -1; 282 return strtof(v, 0); 283} 284 285void CameraParameters::remove(const char *key) 286{ 287 mMap.removeItem(String8(key)); 288} 289 290// Parse string like "640x480" or "10000,20000" 291static int parse_pair(const char *str, int *first, int *second, char delim, 292 char **endptr = NULL) 293{ 294 // Find the first integer. 295 char *end; 296 int w = (int)strtol(str, &end, 10); 297 // If a delimeter does not immediately follow, give up. 298 if (*end != delim) { 299 ALOGE("Cannot find delimeter (%c) in str=%s", delim, str); 300 return -1; 301 } 302 303 // Find the second integer, immediately after the delimeter. 304 int h = (int)strtol(end+1, &end, 10); 305 306 *first = w; 307 *second = h; 308 309 if (endptr) { 310 *endptr = end; 311 } 312 313 return 0; 314} 315 316static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 317{ 318 if (sizesStr == 0) { 319 return; 320 } 321 322 char *sizeStartPtr = (char *)sizesStr; 323 324 while (true) { 325 int width, height; 326 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 327 &sizeStartPtr); 328 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 329 ALOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 330 return; 331 } 332 sizes.push(Size(width, height)); 333 334 if (*sizeStartPtr == '\0') { 335 return; 336 } 337 sizeStartPtr++; 338 } 339} 340 341void CameraParameters::setPreviewSize(int width, int height) 342{ 343 char str[32]; 344 sprintf(str, "%dx%d", width, height); 345 set(KEY_PREVIEW_SIZE, str); 346} 347 348void CameraParameters::getPreviewSize(int *width, int *height) const 349{ 350 *width = *height = -1; 351 // Get the current string, if it doesn't exist, leave the -1x-1 352 const char *p = get(KEY_PREVIEW_SIZE); 353 if (p == 0) return; 354 parse_pair(p, width, height, 'x'); 355} 356 357void CameraParameters::getPreferredPreviewSizeForVideo(int *width, int *height) const 358{ 359 *width = *height = -1; 360 const char *p = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 361 if (p == 0) return; 362 parse_pair(p, width, height, 'x'); 363} 364 365void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 366{ 367 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 368 parseSizesList(previewSizesStr, sizes); 369} 370 371void CameraParameters::setVideoSize(int width, int height) 372{ 373 char str[32]; 374 sprintf(str, "%dx%d", width, height); 375 set(KEY_VIDEO_SIZE, str); 376} 377 378void CameraParameters::getVideoSize(int *width, int *height) const 379{ 380 *width = *height = -1; 381 const char *p = get(KEY_VIDEO_SIZE); 382 if (p == 0) return; 383 parse_pair(p, width, height, 'x'); 384} 385 386void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 387{ 388 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 389 parseSizesList(videoSizesStr, sizes); 390} 391 392void CameraParameters::setPreviewFrameRate(int fps) 393{ 394 set(KEY_PREVIEW_FRAME_RATE, fps); 395} 396 397int CameraParameters::getPreviewFrameRate() const 398{ 399 return getInt(KEY_PREVIEW_FRAME_RATE); 400} 401 402void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 403{ 404 *min_fps = *max_fps = -1; 405 const char *p = get(KEY_PREVIEW_FPS_RANGE); 406 if (p == 0) return; 407 parse_pair(p, min_fps, max_fps, ','); 408} 409 410void CameraParameters::setPreviewFormat(const char *format) 411{ 412 set(KEY_PREVIEW_FORMAT, format); 413} 414 415const char *CameraParameters::getPreviewFormat() const 416{ 417 return get(KEY_PREVIEW_FORMAT); 418} 419 420void CameraParameters::setPictureSize(int width, int height) 421{ 422 char str[32]; 423 sprintf(str, "%dx%d", width, height); 424 set(KEY_PICTURE_SIZE, str); 425} 426 427void CameraParameters::getPictureSize(int *width, int *height) const 428{ 429 *width = *height = -1; 430 // Get the current string, if it doesn't exist, leave the -1x-1 431 const char *p = get(KEY_PICTURE_SIZE); 432 if (p == 0) return; 433 parse_pair(p, width, height, 'x'); 434} 435 436void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 437{ 438 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 439 parseSizesList(pictureSizesStr, sizes); 440} 441 442void CameraParameters::setPictureFormat(const char *format) 443{ 444 set(KEY_PICTURE_FORMAT, format); 445} 446 447const char *CameraParameters::getPictureFormat() const 448{ 449 return get(KEY_PICTURE_FORMAT); 450} 451 452void CameraParameters::dump() const 453{ 454 ALOGD("dump: mMap.size = %d", mMap.size()); 455 for (size_t i = 0; i < mMap.size(); i++) { 456 String8 k, v; 457 k = mMap.keyAt(i); 458 v = mMap.valueAt(i); 459 ALOGD("%s: %s\n", k.string(), v.string()); 460 } 461} 462 463status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 464{ 465 const size_t SIZE = 256; 466 char buffer[SIZE]; 467 String8 result; 468 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 469 result.append(buffer); 470 for (size_t i = 0; i < mMap.size(); i++) { 471 String8 k, v; 472 k = mMap.keyAt(i); 473 v = mMap.valueAt(i); 474 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 475 result.append(buffer); 476 } 477 write(fd, result.string(), result.size()); 478 return NO_ERROR; 479} 480 481}; // namespace android 482