CameraParameters.cpp revision 9219e0b4eb346b5e0a1a21e77fe22b8c2232ec4b
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"; 76 77const char CameraParameters::TRUE[] = "true"; 78const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 79 80// Values for white balance settings. 81const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 82const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 83const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 84const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 85const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 86const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 87const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 88const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 89 90// Values for effect settings. 91const char CameraParameters::EFFECT_NONE[] = "none"; 92const char CameraParameters::EFFECT_MONO[] = "mono"; 93const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 94const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 95const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 96const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 97const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 98const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 99const char CameraParameters::EFFECT_AQUA[] = "aqua"; 100 101// Values for antibanding settings. 102const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 103const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 104const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 105const char CameraParameters::ANTIBANDING_OFF[] = "off"; 106 107// Values for flash mode settings. 108const char CameraParameters::FLASH_MODE_OFF[] = "off"; 109const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 110const char CameraParameters::FLASH_MODE_ON[] = "on"; 111const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 112const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 113 114// Values for scene mode settings. 115const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 116const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 117const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 118const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 119const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 120const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 121const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 122const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 123const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 124const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 125const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 126const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 127const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 128const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 129const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 130const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 131 132const char CameraParameters::PIXEL_FORMAT_YUV420P[] = "yuv420p"; 133const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 134const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 135const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 136const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 137const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 138 139// Values for focus mode settings. 140const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 141const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 142const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 143const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 144const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 145const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 146 147CameraParameters::CameraParameters() 148 : mMap() 149{ 150} 151 152CameraParameters::~CameraParameters() 153{ 154} 155 156String8 CameraParameters::flatten() const 157{ 158 String8 flattened(""); 159 size_t size = mMap.size(); 160 161 for (size_t i = 0; i < size; i++) { 162 String8 k, v; 163 k = mMap.keyAt(i); 164 v = mMap.valueAt(i); 165 166 flattened += k; 167 flattened += "="; 168 flattened += v; 169 if (i != size-1) 170 flattened += ";"; 171 } 172 173 return flattened; 174} 175 176void CameraParameters::unflatten(const String8 ¶ms) 177{ 178 const char *a = params.string(); 179 const char *b; 180 181 mMap.clear(); 182 183 for (;;) { 184 // Find the bounds of the key name. 185 b = strchr(a, '='); 186 if (b == 0) 187 break; 188 189 // Create the key string. 190 String8 k(a, (size_t)(b-a)); 191 192 // Find the value. 193 a = b+1; 194 b = strchr(a, ';'); 195 if (b == 0) { 196 // If there's no semicolon, this is the last item. 197 String8 v(a); 198 mMap.add(k, v); 199 break; 200 } 201 202 String8 v(a, (size_t)(b-a)); 203 mMap.add(k, v); 204 a = b+1; 205 } 206} 207 208 209void CameraParameters::set(const char *key, const char *value) 210{ 211 // XXX i think i can do this with strspn() 212 if (strchr(key, '=') || strchr(key, ';')) { 213 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 214 return; 215 } 216 217 if (strchr(value, '=') || strchr(key, ';')) { 218 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 219 return; 220 } 221 222 mMap.replaceValueFor(String8(key), String8(value)); 223} 224 225void CameraParameters::set(const char *key, int value) 226{ 227 char str[16]; 228 sprintf(str, "%d", value); 229 set(key, str); 230} 231 232void CameraParameters::setFloat(const char *key, float value) 233{ 234 char str[16]; // 14 should be enough. We overestimate to be safe. 235 snprintf(str, sizeof(str), "%g", value); 236 set(key, str); 237} 238 239const char *CameraParameters::get(const char *key) const 240{ 241 String8 v = mMap.valueFor(String8(key)); 242 if (v.length() == 0) 243 return 0; 244 return v.string(); 245} 246 247int CameraParameters::getInt(const char *key) const 248{ 249 const char *v = get(key); 250 if (v == 0) 251 return -1; 252 return strtol(v, 0, 0); 253} 254 255float CameraParameters::getFloat(const char *key) const 256{ 257 const char *v = get(key); 258 if (v == 0) return -1; 259 return strtof(v, 0); 260} 261 262void CameraParameters::remove(const char *key) 263{ 264 mMap.removeItem(String8(key)); 265} 266 267// Parse string like "640x480" or "10000,20000" 268static int parse_pair(const char *str, int *first, int *second, char delim, 269 char **endptr = NULL) 270{ 271 // Find the first integer. 272 char *end; 273 int w = (int)strtol(str, &end, 10); 274 // If a delimeter does not immediately follow, give up. 275 if (*end != delim) { 276 LOGE("Cannot find delimeter (%c) in str=%s", delim, str); 277 return -1; 278 } 279 280 // Find the second integer, immediately after the delimeter. 281 int h = (int)strtol(end+1, &end, 10); 282 283 *first = w; 284 *second = h; 285 286 if (endptr) { 287 *endptr = end; 288 } 289 290 return 0; 291} 292 293static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 294{ 295 if (sizesStr == 0) { 296 return; 297 } 298 299 char *sizeStartPtr = (char *)sizesStr; 300 301 while (true) { 302 int width, height; 303 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 304 &sizeStartPtr); 305 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 306 LOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 307 return; 308 } 309 sizes.push(Size(width, height)); 310 311 if (*sizeStartPtr == '\0') { 312 return; 313 } 314 sizeStartPtr++; 315 } 316} 317 318void CameraParameters::setPreviewSize(int width, int height) 319{ 320 char str[32]; 321 sprintf(str, "%dx%d", width, height); 322 set(KEY_PREVIEW_SIZE, str); 323} 324 325void CameraParameters::getPreviewSize(int *width, int *height) const 326{ 327 *width = *height = -1; 328 // Get the current string, if it doesn't exist, leave the -1x-1 329 const char *p = get(KEY_PREVIEW_SIZE); 330 if (p == 0) return; 331 parse_pair(p, width, height, 'x'); 332} 333 334void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 335{ 336 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 337 parseSizesList(previewSizesStr, sizes); 338} 339 340void CameraParameters::setPreviewFrameRate(int fps) 341{ 342 set(KEY_PREVIEW_FRAME_RATE, fps); 343} 344 345int CameraParameters::getPreviewFrameRate() const 346{ 347 return getInt(KEY_PREVIEW_FRAME_RATE); 348} 349 350void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 351{ 352 *min_fps = *max_fps = -1; 353 const char *p = get(KEY_PREVIEW_FPS_RANGE); 354 if (p == 0) return; 355 parse_pair(p, min_fps, max_fps, ','); 356} 357 358void CameraParameters::setPreviewFormat(const char *format) 359{ 360 set(KEY_PREVIEW_FORMAT, format); 361} 362 363const char *CameraParameters::getPreviewFormat() const 364{ 365 return get(KEY_PREVIEW_FORMAT); 366} 367 368void CameraParameters::setPictureSize(int width, int height) 369{ 370 char str[32]; 371 sprintf(str, "%dx%d", width, height); 372 set(KEY_PICTURE_SIZE, str); 373} 374 375void CameraParameters::getPictureSize(int *width, int *height) const 376{ 377 *width = *height = -1; 378 // Get the current string, if it doesn't exist, leave the -1x-1 379 const char *p = get(KEY_PICTURE_SIZE); 380 if (p == 0) return; 381 parse_pair(p, width, height, 'x'); 382} 383 384void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 385{ 386 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 387 parseSizesList(pictureSizesStr, sizes); 388} 389 390void CameraParameters::setPictureFormat(const char *format) 391{ 392 set(KEY_PICTURE_FORMAT, format); 393} 394 395const char *CameraParameters::getPictureFormat() const 396{ 397 return get(KEY_PICTURE_FORMAT); 398} 399 400void CameraParameters::dump() const 401{ 402 LOGD("dump: mMap.size = %d", mMap.size()); 403 for (size_t i = 0; i < mMap.size(); i++) { 404 String8 k, v; 405 k = mMap.keyAt(i); 406 v = mMap.valueAt(i); 407 LOGD("%s: %s\n", k.string(), v.string()); 408 } 409} 410 411status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 412{ 413 const size_t SIZE = 256; 414 char buffer[SIZE]; 415 String8 result; 416 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 417 result.append(buffer); 418 for (size_t i = 0; i < mMap.size(); i++) { 419 String8 k, v; 420 k = mMap.keyAt(i); 421 v = mMap.valueAt(i); 422 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 423 result.append(buffer); 424 } 425 write(fd, result.string(), result.size()); 426 return NO_ERROR; 427} 428 429}; // namespace android 430