CameraParameters.cpp revision f6d9696bf1db133d16dd8981380e1bfbd2e0bc70
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"; 149 150const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 151const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 152const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 153const char CameraParameters::PIXEL_FORMAT_YUV420P[] = "yuv420p"; 154const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 155const char CameraParameters::PIXEL_FORMAT_RGBA8888[] = "rgba8888"; 156const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 157const char CameraParameters::PIXEL_FORMAT_BAYER_RGGB[] = "bayer-rggb"; 158const char CameraParameters::PIXEL_FORMAT_ANDROID_OPAQUE[] = "android-opaque"; 159 160// Values for focus mode settings. 161const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 162const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 163const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 164const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 165const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 166const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 167const char CameraParameters::FOCUS_MODE_CONTINUOUS_PICTURE[] = "continuous-picture"; 168 169CameraParameters::CameraParameters() 170 : mMap() 171{ 172} 173 174CameraParameters::~CameraParameters() 175{ 176} 177 178String8 CameraParameters::flatten() const 179{ 180 String8 flattened(""); 181 size_t size = mMap.size(); 182 183 for (size_t i = 0; i < size; i++) { 184 String8 k, v; 185 k = mMap.keyAt(i); 186 v = mMap.valueAt(i); 187 188 flattened += k; 189 flattened += "="; 190 flattened += v; 191 if (i != size-1) 192 flattened += ";"; 193 } 194 195 return flattened; 196} 197 198void CameraParameters::unflatten(const String8 ¶ms) 199{ 200 const char *a = params.string(); 201 const char *b; 202 203 mMap.clear(); 204 205 for (;;) { 206 // Find the bounds of the key name. 207 b = strchr(a, '='); 208 if (b == 0) 209 break; 210 211 // Create the key string. 212 String8 k(a, (size_t)(b-a)); 213 214 // Find the value. 215 a = b+1; 216 b = strchr(a, ';'); 217 if (b == 0) { 218 // If there's no semicolon, this is the last item. 219 String8 v(a); 220 mMap.add(k, v); 221 break; 222 } 223 224 String8 v(a, (size_t)(b-a)); 225 mMap.add(k, v); 226 a = b+1; 227 } 228} 229 230 231void CameraParameters::set(const char *key, const char *value) 232{ 233 // XXX i think i can do this with strspn() 234 if (strchr(key, '=') || strchr(key, ';')) { 235 //XXX ALOGE("Key \"%s\"contains invalid character (= or ;)", key); 236 return; 237 } 238 239 if (strchr(value, '=') || strchr(key, ';')) { 240 //XXX ALOGE("Value \"%s\"contains invalid character (= or ;)", value); 241 return; 242 } 243 244 mMap.replaceValueFor(String8(key), String8(value)); 245} 246 247void CameraParameters::set(const char *key, int value) 248{ 249 char str[16]; 250 sprintf(str, "%d", value); 251 set(key, str); 252} 253 254void CameraParameters::setFloat(const char *key, float value) 255{ 256 char str[16]; // 14 should be enough. We overestimate to be safe. 257 snprintf(str, sizeof(str), "%g", value); 258 set(key, str); 259} 260 261const char *CameraParameters::get(const char *key) const 262{ 263 String8 v = mMap.valueFor(String8(key)); 264 if (v.length() == 0) 265 return 0; 266 return v.string(); 267} 268 269int CameraParameters::getInt(const char *key) const 270{ 271 const char *v = get(key); 272 if (v == 0) 273 return -1; 274 return strtol(v, 0, 0); 275} 276 277float CameraParameters::getFloat(const char *key) const 278{ 279 const char *v = get(key); 280 if (v == 0) return -1; 281 return strtof(v, 0); 282} 283 284void CameraParameters::remove(const char *key) 285{ 286 mMap.removeItem(String8(key)); 287} 288 289// Parse string like "640x480" or "10000,20000" 290static int parse_pair(const char *str, int *first, int *second, char delim, 291 char **endptr = NULL) 292{ 293 // Find the first integer. 294 char *end; 295 int w = (int)strtol(str, &end, 10); 296 // If a delimeter does not immediately follow, give up. 297 if (*end != delim) { 298 ALOGE("Cannot find delimeter (%c) in str=%s", delim, str); 299 return -1; 300 } 301 302 // Find the second integer, immediately after the delimeter. 303 int h = (int)strtol(end+1, &end, 10); 304 305 *first = w; 306 *second = h; 307 308 if (endptr) { 309 *endptr = end; 310 } 311 312 return 0; 313} 314 315static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 316{ 317 if (sizesStr == 0) { 318 return; 319 } 320 321 char *sizeStartPtr = (char *)sizesStr; 322 323 while (true) { 324 int width, height; 325 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 326 &sizeStartPtr); 327 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 328 ALOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 329 return; 330 } 331 sizes.push(Size(width, height)); 332 333 if (*sizeStartPtr == '\0') { 334 return; 335 } 336 sizeStartPtr++; 337 } 338} 339 340void CameraParameters::setPreviewSize(int width, int height) 341{ 342 char str[32]; 343 sprintf(str, "%dx%d", width, height); 344 set(KEY_PREVIEW_SIZE, str); 345} 346 347void CameraParameters::getPreviewSize(int *width, int *height) const 348{ 349 *width = *height = -1; 350 // Get the current string, if it doesn't exist, leave the -1x-1 351 const char *p = get(KEY_PREVIEW_SIZE); 352 if (p == 0) return; 353 parse_pair(p, width, height, 'x'); 354} 355 356void CameraParameters::getPreferredPreviewSizeForVideo(int *width, int *height) const 357{ 358 *width = *height = -1; 359 const char *p = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 360 if (p == 0) return; 361 parse_pair(p, width, height, 'x'); 362} 363 364void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 365{ 366 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 367 parseSizesList(previewSizesStr, sizes); 368} 369 370void CameraParameters::setVideoSize(int width, int height) 371{ 372 char str[32]; 373 sprintf(str, "%dx%d", width, height); 374 set(KEY_VIDEO_SIZE, str); 375} 376 377void CameraParameters::getVideoSize(int *width, int *height) const 378{ 379 *width = *height = -1; 380 const char *p = get(KEY_VIDEO_SIZE); 381 if (p == 0) return; 382 parse_pair(p, width, height, 'x'); 383} 384 385void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 386{ 387 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 388 parseSizesList(videoSizesStr, sizes); 389} 390 391void CameraParameters::setPreviewFrameRate(int fps) 392{ 393 set(KEY_PREVIEW_FRAME_RATE, fps); 394} 395 396int CameraParameters::getPreviewFrameRate() const 397{ 398 return getInt(KEY_PREVIEW_FRAME_RATE); 399} 400 401void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 402{ 403 *min_fps = *max_fps = -1; 404 const char *p = get(KEY_PREVIEW_FPS_RANGE); 405 if (p == 0) return; 406 parse_pair(p, min_fps, max_fps, ','); 407} 408 409void CameraParameters::setPreviewFormat(const char *format) 410{ 411 set(KEY_PREVIEW_FORMAT, format); 412} 413 414const char *CameraParameters::getPreviewFormat() const 415{ 416 return get(KEY_PREVIEW_FORMAT); 417} 418 419void CameraParameters::setPictureSize(int width, int height) 420{ 421 char str[32]; 422 sprintf(str, "%dx%d", width, height); 423 set(KEY_PICTURE_SIZE, str); 424} 425 426void CameraParameters::getPictureSize(int *width, int *height) const 427{ 428 *width = *height = -1; 429 // Get the current string, if it doesn't exist, leave the -1x-1 430 const char *p = get(KEY_PICTURE_SIZE); 431 if (p == 0) return; 432 parse_pair(p, width, height, 'x'); 433} 434 435void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 436{ 437 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 438 parseSizesList(pictureSizesStr, sizes); 439} 440 441void CameraParameters::setPictureFormat(const char *format) 442{ 443 set(KEY_PICTURE_FORMAT, format); 444} 445 446const char *CameraParameters::getPictureFormat() const 447{ 448 return get(KEY_PICTURE_FORMAT); 449} 450 451void CameraParameters::dump() const 452{ 453 ALOGD("dump: mMap.size = %d", mMap.size()); 454 for (size_t i = 0; i < mMap.size(); i++) { 455 String8 k, v; 456 k = mMap.keyAt(i); 457 v = mMap.valueAt(i); 458 ALOGD("%s: %s\n", k.string(), v.string()); 459 } 460} 461 462status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 463{ 464 const size_t SIZE = 256; 465 char buffer[SIZE]; 466 String8 result; 467 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 468 result.append(buffer); 469 for (size_t i = 0; i < mMap.size(); i++) { 470 String8 k, v; 471 k = mMap.keyAt(i); 472 v = mMap.valueAt(i); 473 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 474 result.append(buffer); 475 } 476 write(fd, result.string(), result.size()); 477 return NO_ERROR; 478} 479 480}; // namespace android 481