CameraParameters.cpp revision 0d14c25355b7807b88fcdc76040ef986aa754815
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_FOCAL_LENGTH[] = "focal-length"; 63const char CameraParameters::KEY_HORIZONTAL_VIEW_ANGLE[] = "horizontal-view-angle"; 64const char CameraParameters::KEY_VERTICAL_VIEW_ANGLE[] = "vertical-view-angle"; 65const char CameraParameters::KEY_EXPOSURE_COMPENSATION[] = "exposure-compensation"; 66const char CameraParameters::KEY_MAX_EXPOSURE_COMPENSATION[] = "max-exposure-compensation"; 67const char CameraParameters::KEY_MIN_EXPOSURE_COMPENSATION[] = "min-exposure-compensation"; 68const char CameraParameters::KEY_EXPOSURE_COMPENSATION_STEP[] = "exposure-compensation-step"; 69const char CameraParameters::KEY_ZOOM[] = "zoom"; 70const char CameraParameters::KEY_MAX_ZOOM[] = "max-zoom"; 71const char CameraParameters::KEY_ZOOM_RATIOS[] = "zoom-ratios"; 72const char CameraParameters::KEY_ZOOM_SUPPORTED[] = "zoom-supported"; 73const char CameraParameters::KEY_SMOOTH_ZOOM_SUPPORTED[] = "smooth-zoom-supported"; 74const char CameraParameters::KEY_FOCUS_DISTANCES[] = "focus-distances"; 75const char CameraParameters::KEY_VIDEO_FRAME_FORMAT[] = "video-frame-format"; 76const char CameraParameters::KEY_VIDEO_SIZE[] = "video-size"; 77const char CameraParameters::KEY_SUPPORTED_VIDEO_SIZES[] = "video-size-values"; 78 79const char CameraParameters::TRUE[] = "true"; 80const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 81 82// Values for white balance settings. 83const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 84const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 85const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 86const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 87const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 88const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 89const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 90const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 91 92// Values for effect settings. 93const char CameraParameters::EFFECT_NONE[] = "none"; 94const char CameraParameters::EFFECT_MONO[] = "mono"; 95const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 96const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 97const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 98const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 99const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 100const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 101const char CameraParameters::EFFECT_AQUA[] = "aqua"; 102 103// Values for antibanding settings. 104const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 105const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 106const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 107const char CameraParameters::ANTIBANDING_OFF[] = "off"; 108 109// Values for flash mode settings. 110const char CameraParameters::FLASH_MODE_OFF[] = "off"; 111const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 112const char CameraParameters::FLASH_MODE_ON[] = "on"; 113const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 114const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 115 116// Values for scene mode settings. 117const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 118const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 119const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 120const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 121const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 122const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 123const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 124const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 125const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 126const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 127const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 128const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 129const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 130const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 131const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 132const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 133 134const char CameraParameters::PIXEL_FORMAT_YUV420P[] = "yuv420p"; 135const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 136const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 137const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 138const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 139const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 140 141// Values for focus mode settings. 142const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 143const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 144const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 145const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 146const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 147const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 148 149CameraParameters::CameraParameters() 150 : mMap() 151{ 152} 153 154CameraParameters::~CameraParameters() 155{ 156} 157 158String8 CameraParameters::flatten() const 159{ 160 String8 flattened(""); 161 size_t size = mMap.size(); 162 163 for (size_t i = 0; i < size; i++) { 164 String8 k, v; 165 k = mMap.keyAt(i); 166 v = mMap.valueAt(i); 167 168 flattened += k; 169 flattened += "="; 170 flattened += v; 171 if (i != size-1) 172 flattened += ";"; 173 } 174 175 return flattened; 176} 177 178void CameraParameters::unflatten(const String8 ¶ms) 179{ 180 const char *a = params.string(); 181 const char *b; 182 183 mMap.clear(); 184 185 for (;;) { 186 // Find the bounds of the key name. 187 b = strchr(a, '='); 188 if (b == 0) 189 break; 190 191 // Create the key string. 192 String8 k(a, (size_t)(b-a)); 193 194 // Find the value. 195 a = b+1; 196 b = strchr(a, ';'); 197 if (b == 0) { 198 // If there's no semicolon, this is the last item. 199 String8 v(a); 200 mMap.add(k, v); 201 break; 202 } 203 204 String8 v(a, (size_t)(b-a)); 205 mMap.add(k, v); 206 a = b+1; 207 } 208} 209 210 211void CameraParameters::set(const char *key, const char *value) 212{ 213 // XXX i think i can do this with strspn() 214 if (strchr(key, '=') || strchr(key, ';')) { 215 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 216 return; 217 } 218 219 if (strchr(value, '=') || strchr(key, ';')) { 220 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 221 return; 222 } 223 224 mMap.replaceValueFor(String8(key), String8(value)); 225} 226 227void CameraParameters::set(const char *key, int value) 228{ 229 char str[16]; 230 sprintf(str, "%d", value); 231 set(key, str); 232} 233 234void CameraParameters::setFloat(const char *key, float value) 235{ 236 char str[16]; // 14 should be enough. We overestimate to be safe. 237 snprintf(str, sizeof(str), "%g", value); 238 set(key, str); 239} 240 241const char *CameraParameters::get(const char *key) const 242{ 243 String8 v = mMap.valueFor(String8(key)); 244 if (v.length() == 0) 245 return 0; 246 return v.string(); 247} 248 249int CameraParameters::getInt(const char *key) const 250{ 251 const char *v = get(key); 252 if (v == 0) 253 return -1; 254 return strtol(v, 0, 0); 255} 256 257float CameraParameters::getFloat(const char *key) const 258{ 259 const char *v = get(key); 260 if (v == 0) return -1; 261 return strtof(v, 0); 262} 263 264void CameraParameters::remove(const char *key) 265{ 266 mMap.removeItem(String8(key)); 267} 268 269// Parse string like "640x480" or "10000,20000" 270static int parse_pair(const char *str, int *first, int *second, char delim, 271 char **endptr = NULL) 272{ 273 // Find the first integer. 274 char *end; 275 int w = (int)strtol(str, &end, 10); 276 // If a delimeter does not immediately follow, give up. 277 if (*end != delim) { 278 LOGE("Cannot find delimeter (%c) in str=%s", delim, str); 279 return -1; 280 } 281 282 // Find the second integer, immediately after the delimeter. 283 int h = (int)strtol(end+1, &end, 10); 284 285 *first = w; 286 *second = h; 287 288 if (endptr) { 289 *endptr = end; 290 } 291 292 return 0; 293} 294 295static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 296{ 297 if (sizesStr == 0) { 298 return; 299 } 300 301 char *sizeStartPtr = (char *)sizesStr; 302 303 while (true) { 304 int width, height; 305 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 306 &sizeStartPtr); 307 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 308 LOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 309 return; 310 } 311 sizes.push(Size(width, height)); 312 313 if (*sizeStartPtr == '\0') { 314 return; 315 } 316 sizeStartPtr++; 317 } 318} 319 320void CameraParameters::setPreviewSize(int width, int height) 321{ 322 char str[32]; 323 sprintf(str, "%dx%d", width, height); 324 set(KEY_PREVIEW_SIZE, str); 325} 326 327void CameraParameters::getPreviewSize(int *width, int *height) const 328{ 329 *width = *height = -1; 330 // Get the current string, if it doesn't exist, leave the -1x-1 331 const char *p = get(KEY_PREVIEW_SIZE); 332 if (p == 0) return; 333 parse_pair(p, width, height, 'x'); 334} 335 336void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 337{ 338 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 339 parseSizesList(previewSizesStr, sizes); 340} 341 342void CameraParameters::setVideoSize(int width, int height) 343{ 344 char str[32]; 345 sprintf(str, "%dx%d", width, height); 346 set(KEY_VIDEO_SIZE, str); 347} 348 349void CameraParameters::getVideoSize(int *width, int *height) const 350{ 351 *width = *height = -1; 352 const char *p = get(KEY_VIDEO_SIZE); 353 if (p == 0) return; 354 parse_pair(p, width, height, 'x'); 355} 356 357void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 358{ 359 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 360 parseSizesList(videoSizesStr, sizes); 361} 362 363void CameraParameters::setPreviewFrameRate(int fps) 364{ 365 set(KEY_PREVIEW_FRAME_RATE, fps); 366} 367 368int CameraParameters::getPreviewFrameRate() const 369{ 370 return getInt(KEY_PREVIEW_FRAME_RATE); 371} 372 373void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 374{ 375 *min_fps = *max_fps = -1; 376 const char *p = get(KEY_PREVIEW_FPS_RANGE); 377 if (p == 0) return; 378 parse_pair(p, min_fps, max_fps, ','); 379} 380 381void CameraParameters::setPreviewFormat(const char *format) 382{ 383 set(KEY_PREVIEW_FORMAT, format); 384} 385 386const char *CameraParameters::getPreviewFormat() const 387{ 388 return get(KEY_PREVIEW_FORMAT); 389} 390 391void CameraParameters::setPictureSize(int width, int height) 392{ 393 char str[32]; 394 sprintf(str, "%dx%d", width, height); 395 set(KEY_PICTURE_SIZE, str); 396} 397 398void CameraParameters::getPictureSize(int *width, int *height) const 399{ 400 *width = *height = -1; 401 // Get the current string, if it doesn't exist, leave the -1x-1 402 const char *p = get(KEY_PICTURE_SIZE); 403 if (p == 0) return; 404 parse_pair(p, width, height, 'x'); 405} 406 407void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 408{ 409 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 410 parseSizesList(pictureSizesStr, sizes); 411} 412 413void CameraParameters::setPictureFormat(const char *format) 414{ 415 set(KEY_PICTURE_FORMAT, format); 416} 417 418const char *CameraParameters::getPictureFormat() const 419{ 420 return get(KEY_PICTURE_FORMAT); 421} 422 423void CameraParameters::dump() const 424{ 425 LOGD("dump: mMap.size = %d", mMap.size()); 426 for (size_t i = 0; i < mMap.size(); i++) { 427 String8 k, v; 428 k = mMap.keyAt(i); 429 v = mMap.valueAt(i); 430 LOGD("%s: %s\n", k.string(), v.string()); 431 } 432} 433 434status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 435{ 436 const size_t SIZE = 256; 437 char buffer[SIZE]; 438 String8 result; 439 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 440 result.append(buffer); 441 for (size_t i = 0; i < mMap.size(); i++) { 442 String8 k, v; 443 k = mMap.keyAt(i); 444 v = mMap.valueAt(i); 445 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 446 result.append(buffer); 447 } 448 write(fd, result.string(), result.size()); 449 return NO_ERROR; 450} 451 452}; // namespace android 453