CameraParameters.cpp revision c3dbf1a40df85b75e5805382838a90416f69730f
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"; 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"; 169 170// Values for light fx settings 171const char CameraParameters::LIGHTFX_LOWLIGHT[] = "low-light"; 172const char CameraParameters::LIGHTFX_HDR[] = "high-dynamic-range"; 173 174CameraParameters::CameraParameters() 175 : mMap() 176{ 177} 178 179CameraParameters::~CameraParameters() 180{ 181} 182 183String8 CameraParameters::flatten() const 184{ 185 String8 flattened(""); 186 size_t size = mMap.size(); 187 188 for (size_t i = 0; i < size; i++) { 189 String8 k, v; 190 k = mMap.keyAt(i); 191 v = mMap.valueAt(i); 192 193 flattened += k; 194 flattened += "="; 195 flattened += v; 196 if (i != size-1) 197 flattened += ";"; 198 } 199 200 return flattened; 201} 202 203void CameraParameters::unflatten(const String8 ¶ms) 204{ 205 const char *a = params.string(); 206 const char *b; 207 208 mMap.clear(); 209 210 for (;;) { 211 // Find the bounds of the key name. 212 b = strchr(a, '='); 213 if (b == 0) 214 break; 215 216 // Create the key string. 217 String8 k(a, (size_t)(b-a)); 218 219 // Find the value. 220 a = b+1; 221 b = strchr(a, ';'); 222 if (b == 0) { 223 // If there's no semicolon, this is the last item. 224 String8 v(a); 225 mMap.add(k, v); 226 break; 227 } 228 229 String8 v(a, (size_t)(b-a)); 230 mMap.add(k, v); 231 a = b+1; 232 } 233} 234 235 236void CameraParameters::set(const char *key, const char *value) 237{ 238 // XXX i think i can do this with strspn() 239 if (strchr(key, '=') || strchr(key, ';')) { 240 //XXX ALOGE("Key \"%s\"contains invalid character (= or ;)", key); 241 return; 242 } 243 244 if (strchr(value, '=') || strchr(key, ';')) { 245 //XXX ALOGE("Value \"%s\"contains invalid character (= or ;)", value); 246 return; 247 } 248 249 mMap.replaceValueFor(String8(key), String8(value)); 250} 251 252void CameraParameters::set(const char *key, int value) 253{ 254 char str[16]; 255 sprintf(str, "%d", value); 256 set(key, str); 257} 258 259void CameraParameters::setFloat(const char *key, float value) 260{ 261 char str[16]; // 14 should be enough. We overestimate to be safe. 262 snprintf(str, sizeof(str), "%g", value); 263 set(key, str); 264} 265 266const char *CameraParameters::get(const char *key) const 267{ 268 String8 v = mMap.valueFor(String8(key)); 269 if (v.length() == 0) 270 return 0; 271 return v.string(); 272} 273 274int CameraParameters::getInt(const char *key) const 275{ 276 const char *v = get(key); 277 if (v == 0) 278 return -1; 279 return strtol(v, 0, 0); 280} 281 282float CameraParameters::getFloat(const char *key) const 283{ 284 const char *v = get(key); 285 if (v == 0) return -1; 286 return strtof(v, 0); 287} 288 289void CameraParameters::remove(const char *key) 290{ 291 mMap.removeItem(String8(key)); 292} 293 294// Parse string like "640x480" or "10000,20000" 295static int parse_pair(const char *str, int *first, int *second, char delim, 296 char **endptr = NULL) 297{ 298 // Find the first integer. 299 char *end; 300 int w = (int)strtol(str, &end, 10); 301 // If a delimeter does not immediately follow, give up. 302 if (*end != delim) { 303 ALOGE("Cannot find delimeter (%c) in str=%s", delim, str); 304 return -1; 305 } 306 307 // Find the second integer, immediately after the delimeter. 308 int h = (int)strtol(end+1, &end, 10); 309 310 *first = w; 311 *second = h; 312 313 if (endptr) { 314 *endptr = end; 315 } 316 317 return 0; 318} 319 320static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 321{ 322 if (sizesStr == 0) { 323 return; 324 } 325 326 char *sizeStartPtr = (char *)sizesStr; 327 328 while (true) { 329 int width, height; 330 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 331 &sizeStartPtr); 332 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 333 ALOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 334 return; 335 } 336 sizes.push(Size(width, height)); 337 338 if (*sizeStartPtr == '\0') { 339 return; 340 } 341 sizeStartPtr++; 342 } 343} 344 345void CameraParameters::setPreviewSize(int width, int height) 346{ 347 char str[32]; 348 sprintf(str, "%dx%d", width, height); 349 set(KEY_PREVIEW_SIZE, str); 350} 351 352void CameraParameters::getPreviewSize(int *width, int *height) const 353{ 354 *width = *height = -1; 355 // Get the current string, if it doesn't exist, leave the -1x-1 356 const char *p = get(KEY_PREVIEW_SIZE); 357 if (p == 0) return; 358 parse_pair(p, width, height, 'x'); 359} 360 361void CameraParameters::getPreferredPreviewSizeForVideo(int *width, int *height) const 362{ 363 *width = *height = -1; 364 const char *p = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 365 if (p == 0) return; 366 parse_pair(p, width, height, 'x'); 367} 368 369void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 370{ 371 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 372 parseSizesList(previewSizesStr, sizes); 373} 374 375void CameraParameters::setVideoSize(int width, int height) 376{ 377 char str[32]; 378 sprintf(str, "%dx%d", width, height); 379 set(KEY_VIDEO_SIZE, str); 380} 381 382void CameraParameters::getVideoSize(int *width, int *height) const 383{ 384 *width = *height = -1; 385 const char *p = get(KEY_VIDEO_SIZE); 386 if (p == 0) return; 387 parse_pair(p, width, height, 'x'); 388} 389 390void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 391{ 392 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 393 parseSizesList(videoSizesStr, sizes); 394} 395 396void CameraParameters::setPreviewFrameRate(int fps) 397{ 398 set(KEY_PREVIEW_FRAME_RATE, fps); 399} 400 401int CameraParameters::getPreviewFrameRate() const 402{ 403 return getInt(KEY_PREVIEW_FRAME_RATE); 404} 405 406void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 407{ 408 *min_fps = *max_fps = -1; 409 const char *p = get(KEY_PREVIEW_FPS_RANGE); 410 if (p == 0) return; 411 parse_pair(p, min_fps, max_fps, ','); 412} 413 414void CameraParameters::setPreviewFormat(const char *format) 415{ 416 set(KEY_PREVIEW_FORMAT, format); 417} 418 419const char *CameraParameters::getPreviewFormat() const 420{ 421 return get(KEY_PREVIEW_FORMAT); 422} 423 424void CameraParameters::setPictureSize(int width, int height) 425{ 426 char str[32]; 427 sprintf(str, "%dx%d", width, height); 428 set(KEY_PICTURE_SIZE, str); 429} 430 431void CameraParameters::getPictureSize(int *width, int *height) const 432{ 433 *width = *height = -1; 434 // Get the current string, if it doesn't exist, leave the -1x-1 435 const char *p = get(KEY_PICTURE_SIZE); 436 if (p == 0) return; 437 parse_pair(p, width, height, 'x'); 438} 439 440void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 441{ 442 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 443 parseSizesList(pictureSizesStr, sizes); 444} 445 446void CameraParameters::setPictureFormat(const char *format) 447{ 448 set(KEY_PICTURE_FORMAT, format); 449} 450 451const char *CameraParameters::getPictureFormat() const 452{ 453 return get(KEY_PICTURE_FORMAT); 454} 455 456void CameraParameters::dump() const 457{ 458 ALOGD("dump: mMap.size = %d", mMap.size()); 459 for (size_t i = 0; i < mMap.size(); i++) { 460 String8 k, v; 461 k = mMap.keyAt(i); 462 v = mMap.valueAt(i); 463 ALOGD("%s: %s\n", k.string(), v.string()); 464 } 465} 466 467status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 468{ 469 const size_t SIZE = 256; 470 char buffer[SIZE]; 471 String8 result; 472 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 473 result.append(buffer); 474 for (size_t i = 0; i < mMap.size(); i++) { 475 String8 k, v; 476 k = mMap.keyAt(i); 477 v = mMap.valueAt(i); 478 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 479 result.append(buffer); 480 } 481 write(fd, result.string(), result.size()); 482 return NO_ERROR; 483} 484 485}; // namespace android 486