CameraParameters.cpp revision a1c3d37ef921bfc79a0f7d2ac7f897943134d48d
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_ZOOM[] = "zoom"; 72const char CameraParameters::KEY_MAX_ZOOM[] = "max-zoom"; 73const char CameraParameters::KEY_ZOOM_RATIOS[] = "zoom-ratios"; 74const char CameraParameters::KEY_ZOOM_SUPPORTED[] = "zoom-supported"; 75const char CameraParameters::KEY_SMOOTH_ZOOM_SUPPORTED[] = "smooth-zoom-supported"; 76const char CameraParameters::KEY_FOCUS_DISTANCES[] = "focus-distances"; 77const char CameraParameters::KEY_VIDEO_FRAME_FORMAT[] = "video-frame-format"; 78const char CameraParameters::KEY_VIDEO_SIZE[] = "video-size"; 79const char CameraParameters::KEY_SUPPORTED_VIDEO_SIZES[] = "video-size-values"; 80const char CameraParameters::KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO[] = "preferred-preview-size-for-video"; 81 82const char CameraParameters::TRUE[] = "true"; 83const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 84 85// Values for white balance settings. 86const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 87const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 88const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 89const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 90const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 91const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 92const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 93const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 94 95// Values for effect settings. 96const char CameraParameters::EFFECT_NONE[] = "none"; 97const char CameraParameters::EFFECT_MONO[] = "mono"; 98const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 99const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 100const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 101const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 102const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 103const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 104const char CameraParameters::EFFECT_AQUA[] = "aqua"; 105 106// Values for antibanding settings. 107const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 108const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 109const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 110const char CameraParameters::ANTIBANDING_OFF[] = "off"; 111 112// Values for flash mode settings. 113const char CameraParameters::FLASH_MODE_OFF[] = "off"; 114const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 115const char CameraParameters::FLASH_MODE_ON[] = "on"; 116const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 117const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 118 119// Values for scene mode settings. 120const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 121const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 122const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 123const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 124const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 125const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 126const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 127const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 128const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 129const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 130const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 131const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 132const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 133const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 134const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 135const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 136 137const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 138const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 139const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 140const char CameraParameters::PIXEL_FORMAT_YUV420P[] = "yuv420p"; 141const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 142const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 143 144// Values for focus mode settings. 145const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 146const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 147const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 148const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 149const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 150const char CameraParameters::FOCUS_MODE_CONTINUOUS_VIDEO[] = "continuous-video"; 151 152CameraParameters::CameraParameters() 153 : mMap() 154{ 155} 156 157CameraParameters::~CameraParameters() 158{ 159} 160 161String8 CameraParameters::flatten() const 162{ 163 String8 flattened(""); 164 size_t size = mMap.size(); 165 166 for (size_t i = 0; i < size; i++) { 167 String8 k, v; 168 k = mMap.keyAt(i); 169 v = mMap.valueAt(i); 170 171 flattened += k; 172 flattened += "="; 173 flattened += v; 174 if (i != size-1) 175 flattened += ";"; 176 } 177 178 return flattened; 179} 180 181void CameraParameters::unflatten(const String8 ¶ms) 182{ 183 const char *a = params.string(); 184 const char *b; 185 186 mMap.clear(); 187 188 for (;;) { 189 // Find the bounds of the key name. 190 b = strchr(a, '='); 191 if (b == 0) 192 break; 193 194 // Create the key string. 195 String8 k(a, (size_t)(b-a)); 196 197 // Find the value. 198 a = b+1; 199 b = strchr(a, ';'); 200 if (b == 0) { 201 // If there's no semicolon, this is the last item. 202 String8 v(a); 203 mMap.add(k, v); 204 break; 205 } 206 207 String8 v(a, (size_t)(b-a)); 208 mMap.add(k, v); 209 a = b+1; 210 } 211} 212 213 214void CameraParameters::set(const char *key, const char *value) 215{ 216 // XXX i think i can do this with strspn() 217 if (strchr(key, '=') || strchr(key, ';')) { 218 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 219 return; 220 } 221 222 if (strchr(value, '=') || strchr(key, ';')) { 223 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 224 return; 225 } 226 227 mMap.replaceValueFor(String8(key), String8(value)); 228} 229 230void CameraParameters::set(const char *key, int value) 231{ 232 char str[16]; 233 sprintf(str, "%d", value); 234 set(key, str); 235} 236 237void CameraParameters::setFloat(const char *key, float value) 238{ 239 char str[16]; // 14 should be enough. We overestimate to be safe. 240 snprintf(str, sizeof(str), "%g", value); 241 set(key, str); 242} 243 244const char *CameraParameters::get(const char *key) const 245{ 246 String8 v = mMap.valueFor(String8(key)); 247 if (v.length() == 0) 248 return 0; 249 return v.string(); 250} 251 252int CameraParameters::getInt(const char *key) const 253{ 254 const char *v = get(key); 255 if (v == 0) 256 return -1; 257 return strtol(v, 0, 0); 258} 259 260float CameraParameters::getFloat(const char *key) const 261{ 262 const char *v = get(key); 263 if (v == 0) return -1; 264 return strtof(v, 0); 265} 266 267void CameraParameters::remove(const char *key) 268{ 269 mMap.removeItem(String8(key)); 270} 271 272// Parse string like "640x480" or "10000,20000" 273static int parse_pair(const char *str, int *first, int *second, char delim, 274 char **endptr = NULL) 275{ 276 // Find the first integer. 277 char *end; 278 int w = (int)strtol(str, &end, 10); 279 // If a delimeter does not immediately follow, give up. 280 if (*end != delim) { 281 LOGE("Cannot find delimeter (%c) in str=%s", delim, str); 282 return -1; 283 } 284 285 // Find the second integer, immediately after the delimeter. 286 int h = (int)strtol(end+1, &end, 10); 287 288 *first = w; 289 *second = h; 290 291 if (endptr) { 292 *endptr = end; 293 } 294 295 return 0; 296} 297 298static void parseSizesList(const char *sizesStr, Vector<Size> &sizes) 299{ 300 if (sizesStr == 0) { 301 return; 302 } 303 304 char *sizeStartPtr = (char *)sizesStr; 305 306 while (true) { 307 int width, height; 308 int success = parse_pair(sizeStartPtr, &width, &height, 'x', 309 &sizeStartPtr); 310 if (success == -1 || (*sizeStartPtr != ',' && *sizeStartPtr != '\0')) { 311 LOGE("Picture sizes string \"%s\" contains invalid character.", sizesStr); 312 return; 313 } 314 sizes.push(Size(width, height)); 315 316 if (*sizeStartPtr == '\0') { 317 return; 318 } 319 sizeStartPtr++; 320 } 321} 322 323void CameraParameters::setPreviewSize(int width, int height) 324{ 325 char str[32]; 326 sprintf(str, "%dx%d", width, height); 327 set(KEY_PREVIEW_SIZE, str); 328} 329 330void CameraParameters::getPreviewSize(int *width, int *height) const 331{ 332 *width = *height = -1; 333 // Get the current string, if it doesn't exist, leave the -1x-1 334 const char *p = get(KEY_PREVIEW_SIZE); 335 if (p == 0) return; 336 parse_pair(p, width, height, 'x'); 337} 338 339void CameraParameters::getPreferredPreviewSizeForVideo(int *width, int *height) const 340{ 341 *width = *height = -1; 342 const char *p = get(KEY_PREFERRED_PREVIEW_SIZE_FOR_VIDEO); 343 if (p == 0) return; 344 parse_pair(p, width, height, 'x'); 345} 346 347void CameraParameters::getSupportedPreviewSizes(Vector<Size> &sizes) const 348{ 349 const char *previewSizesStr = get(KEY_SUPPORTED_PREVIEW_SIZES); 350 parseSizesList(previewSizesStr, sizes); 351} 352 353void CameraParameters::setVideoSize(int width, int height) 354{ 355 char str[32]; 356 sprintf(str, "%dx%d", width, height); 357 set(KEY_VIDEO_SIZE, str); 358} 359 360void CameraParameters::getVideoSize(int *width, int *height) const 361{ 362 *width = *height = -1; 363 const char *p = get(KEY_VIDEO_SIZE); 364 if (p == 0) return; 365 parse_pair(p, width, height, 'x'); 366} 367 368void CameraParameters::getSupportedVideoSizes(Vector<Size> &sizes) const 369{ 370 const char *videoSizesStr = get(KEY_SUPPORTED_VIDEO_SIZES); 371 parseSizesList(videoSizesStr, sizes); 372} 373 374void CameraParameters::setPreviewFrameRate(int fps) 375{ 376 set(KEY_PREVIEW_FRAME_RATE, fps); 377} 378 379int CameraParameters::getPreviewFrameRate() const 380{ 381 return getInt(KEY_PREVIEW_FRAME_RATE); 382} 383 384void CameraParameters::getPreviewFpsRange(int *min_fps, int *max_fps) const 385{ 386 *min_fps = *max_fps = -1; 387 const char *p = get(KEY_PREVIEW_FPS_RANGE); 388 if (p == 0) return; 389 parse_pair(p, min_fps, max_fps, ','); 390} 391 392void CameraParameters::setPreviewFormat(const char *format) 393{ 394 set(KEY_PREVIEW_FORMAT, format); 395} 396 397const char *CameraParameters::getPreviewFormat() const 398{ 399 return get(KEY_PREVIEW_FORMAT); 400} 401 402void CameraParameters::setPictureSize(int width, int height) 403{ 404 char str[32]; 405 sprintf(str, "%dx%d", width, height); 406 set(KEY_PICTURE_SIZE, str); 407} 408 409void CameraParameters::getPictureSize(int *width, int *height) const 410{ 411 *width = *height = -1; 412 // Get the current string, if it doesn't exist, leave the -1x-1 413 const char *p = get(KEY_PICTURE_SIZE); 414 if (p == 0) return; 415 parse_pair(p, width, height, 'x'); 416} 417 418void CameraParameters::getSupportedPictureSizes(Vector<Size> &sizes) const 419{ 420 const char *pictureSizesStr = get(KEY_SUPPORTED_PICTURE_SIZES); 421 parseSizesList(pictureSizesStr, sizes); 422} 423 424void CameraParameters::setPictureFormat(const char *format) 425{ 426 set(KEY_PICTURE_FORMAT, format); 427} 428 429const char *CameraParameters::getPictureFormat() const 430{ 431 return get(KEY_PICTURE_FORMAT); 432} 433 434void CameraParameters::dump() const 435{ 436 LOGD("dump: mMap.size = %d", mMap.size()); 437 for (size_t i = 0; i < mMap.size(); i++) { 438 String8 k, v; 439 k = mMap.keyAt(i); 440 v = mMap.valueAt(i); 441 LOGD("%s: %s\n", k.string(), v.string()); 442 } 443} 444 445status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 446{ 447 const size_t SIZE = 256; 448 char buffer[SIZE]; 449 String8 result; 450 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 451 result.append(buffer); 452 for (size_t i = 0; i < mMap.size(); i++) { 453 String8 k, v; 454 k = mMap.keyAt(i); 455 v = mMap.valueAt(i); 456 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 457 result.append(buffer); 458 } 459 write(fd, result.string(), result.size()); 460 return NO_ERROR; 461} 462 463}; // namespace android 464