CameraParameters.cpp revision 2b8aba228e6ebd45fe29714baa477f3ea2320095
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_PICTURE_SIZE[] = "picture-size"; 34const char CameraParameters::KEY_SUPPORTED_PICTURE_SIZES[] = "picture-size-values"; 35const char CameraParameters::KEY_PICTURE_FORMAT[] = "picture-format"; 36const char CameraParameters::KEY_SUPPORTED_PICTURE_FORMATS[] = "picture-format-values"; 37const char CameraParameters::KEY_JPEG_THUMBNAIL_WIDTH[] = "jpeg-thumbnail-width"; 38const char CameraParameters::KEY_JPEG_THUMBNAIL_HEIGHT[] = "jpeg-thumbnail-height"; 39const char CameraParameters::KEY_SUPPORTED_JPEG_THUMBNAIL_SIZES[] = "jpeg-thumbnail-size-values"; 40const char CameraParameters::KEY_JPEG_THUMBNAIL_QUALITY[] = "jpeg-thumbnail-quality"; 41const char CameraParameters::KEY_JPEG_QUALITY[] = "jpeg-quality"; 42const char CameraParameters::KEY_ROTATION[] = "rotation"; 43const char CameraParameters::KEY_GPS_LATITUDE[] = "gps-latitude"; 44const char CameraParameters::KEY_GPS_LONGITUDE[] = "gps-longitude"; 45const char CameraParameters::KEY_GPS_ALTITUDE[] = "gps-altitude"; 46const char CameraParameters::KEY_GPS_TIMESTAMP[] = "gps-timestamp"; 47const char CameraParameters::KEY_GPS_PROCESSING_METHOD[] = "gps-processing-method"; 48const char CameraParameters::KEY_WHITE_BALANCE[] = "whitebalance"; 49const char CameraParameters::KEY_SUPPORTED_WHITE_BALANCE[] = "whitebalance-values"; 50const char CameraParameters::KEY_EFFECT[] = "effect"; 51const char CameraParameters::KEY_SUPPORTED_EFFECTS[] = "effect-values"; 52const char CameraParameters::KEY_ANTIBANDING[] = "antibanding"; 53const char CameraParameters::KEY_SUPPORTED_ANTIBANDING[] = "antibanding-values"; 54const char CameraParameters::KEY_SCENE_MODE[] = "scene-mode"; 55const char CameraParameters::KEY_SUPPORTED_SCENE_MODES[] = "scene-mode-values"; 56const char CameraParameters::KEY_FLASH_MODE[] = "flash-mode"; 57const char CameraParameters::KEY_SUPPORTED_FLASH_MODES[] = "flash-mode-values"; 58const char CameraParameters::KEY_FOCUS_MODE[] = "focus-mode"; 59const char CameraParameters::KEY_SUPPORTED_FOCUS_MODES[] = "focus-mode-values"; 60const char CameraParameters::KEY_FOCAL_LENGTH[] = "focal-length"; 61const char CameraParameters::KEY_HORIZONTAL_VIEW_ANGLE[] = "horizontal-view-angle"; 62const char CameraParameters::KEY_VERTICAL_VIEW_ANGLE[] = "vertical-view-angle"; 63const char CameraParameters::KEY_EXPOSURE_COMPENSATION[] = "exposure-compensation"; 64const char CameraParameters::KEY_MAX_EXPOSURE_COMPENSATION[] = "max-exposure-compensation"; 65const char CameraParameters::KEY_MIN_EXPOSURE_COMPENSATION[] = "min-exposure-compensation"; 66const char CameraParameters::KEY_EXPOSURE_COMPENSATION_STEP[] = "exposure-compensation-step"; 67const char CameraParameters::KEY_ZOOM[] = "zoom"; 68const char CameraParameters::KEY_MAX_ZOOM[] = "max-zoom"; 69const char CameraParameters::KEY_ZOOM_RATIOS[] = "zoom-ratios"; 70const char CameraParameters::KEY_ZOOM_SUPPORTED[] = "zoom-supported"; 71const char CameraParameters::KEY_SMOOTH_ZOOM_SUPPORTED[] = "smooth-zoom-supported"; 72const char CameraParameters::KEY_FOCUS_DISTANCES[] = "focus-distances"; 73const char CameraParameters::KEY_VIDEO_FRAME_FORMAT[] = "video-frame-format"; 74const char CameraParameters::KEY_METERING_MODE[] = "metering-mode"; 75 76const char CameraParameters::TRUE[] = "true"; 77const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity"; 78 79// Values for white balance settings. 80const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto"; 81const char CameraParameters::WHITE_BALANCE_INCANDESCENT[] = "incandescent"; 82const char CameraParameters::WHITE_BALANCE_FLUORESCENT[] = "fluorescent"; 83const char CameraParameters::WHITE_BALANCE_WARM_FLUORESCENT[] = "warm-fluorescent"; 84const char CameraParameters::WHITE_BALANCE_DAYLIGHT[] = "daylight"; 85const char CameraParameters::WHITE_BALANCE_CLOUDY_DAYLIGHT[] = "cloudy-daylight"; 86const char CameraParameters::WHITE_BALANCE_TWILIGHT[] = "twilight"; 87const char CameraParameters::WHITE_BALANCE_SHADE[] = "shade"; 88 89// Values for effect settings. 90const char CameraParameters::EFFECT_NONE[] = "none"; 91const char CameraParameters::EFFECT_MONO[] = "mono"; 92const char CameraParameters::EFFECT_NEGATIVE[] = "negative"; 93const char CameraParameters::EFFECT_SOLARIZE[] = "solarize"; 94const char CameraParameters::EFFECT_SEPIA[] = "sepia"; 95const char CameraParameters::EFFECT_POSTERIZE[] = "posterize"; 96const char CameraParameters::EFFECT_WHITEBOARD[] = "whiteboard"; 97const char CameraParameters::EFFECT_BLACKBOARD[] = "blackboard"; 98const char CameraParameters::EFFECT_AQUA[] = "aqua"; 99 100// Values for antibanding settings. 101const char CameraParameters::ANTIBANDING_AUTO[] = "auto"; 102const char CameraParameters::ANTIBANDING_50HZ[] = "50hz"; 103const char CameraParameters::ANTIBANDING_60HZ[] = "60hz"; 104const char CameraParameters::ANTIBANDING_OFF[] = "off"; 105 106// Values for flash mode settings. 107const char CameraParameters::FLASH_MODE_OFF[] = "off"; 108const char CameraParameters::FLASH_MODE_AUTO[] = "auto"; 109const char CameraParameters::FLASH_MODE_ON[] = "on"; 110const char CameraParameters::FLASH_MODE_RED_EYE[] = "red-eye"; 111const char CameraParameters::FLASH_MODE_TORCH[] = "torch"; 112 113// Values for scene mode settings. 114const char CameraParameters::SCENE_MODE_AUTO[] = "auto"; 115const char CameraParameters::SCENE_MODE_ACTION[] = "action"; 116const char CameraParameters::SCENE_MODE_PORTRAIT[] = "portrait"; 117const char CameraParameters::SCENE_MODE_LANDSCAPE[] = "landscape"; 118const char CameraParameters::SCENE_MODE_NIGHT[] = "night"; 119const char CameraParameters::SCENE_MODE_NIGHT_PORTRAIT[] = "night-portrait"; 120const char CameraParameters::SCENE_MODE_THEATRE[] = "theatre"; 121const char CameraParameters::SCENE_MODE_BEACH[] = "beach"; 122const char CameraParameters::SCENE_MODE_SNOW[] = "snow"; 123const char CameraParameters::SCENE_MODE_SUNSET[] = "sunset"; 124const char CameraParameters::SCENE_MODE_STEADYPHOTO[] = "steadyphoto"; 125const char CameraParameters::SCENE_MODE_FIREWORKS[] = "fireworks"; 126const char CameraParameters::SCENE_MODE_SPORTS[] = "sports"; 127const char CameraParameters::SCENE_MODE_PARTY[] = "party"; 128const char CameraParameters::SCENE_MODE_CANDLELIGHT[] = "candlelight"; 129const char CameraParameters::SCENE_MODE_BARCODE[] = "barcode"; 130 131// Formats for setPreviewFormat and setPictureFormat. 132const char CameraParameters::PIXEL_FORMAT_YUV422SP[] = "yuv422sp"; 133const char CameraParameters::PIXEL_FORMAT_YUV420SP[] = "yuv420sp"; 134const char CameraParameters::PIXEL_FORMAT_YUV422I[] = "yuv422i-yuyv"; 135const char CameraParameters::PIXEL_FORMAT_RGB565[] = "rgb565"; 136const char CameraParameters::PIXEL_FORMAT_JPEG[] = "jpeg"; 137 138// Values for focus mode settings. 139const char CameraParameters::FOCUS_MODE_AUTO[] = "auto"; 140const char CameraParameters::FOCUS_MODE_INFINITY[] = "infinity"; 141const char CameraParameters::FOCUS_MODE_MACRO[] = "macro"; 142const char CameraParameters::FOCUS_MODE_FIXED[] = "fixed"; 143const char CameraParameters::FOCUS_MODE_EDOF[] = "edof"; 144const char CameraParameters::FOCUS_MODE_CONTINUOUS[] = "continuous"; 145 146// Values for metering mode settings. 147const char METERING_MODE_CENTER_WEIGHTED[] = "center-weighted"; 148const char METERING_MODE_FRAME_AVERAGE[] = "frame-average"; 149const char METERING_MODE_SPOT[] = "spot"; 150 151CameraParameters::CameraParameters() 152 : mMap() 153{ 154} 155 156CameraParameters::~CameraParameters() 157{ 158} 159 160String8 CameraParameters::flatten() const 161{ 162 String8 flattened(""); 163 size_t size = mMap.size(); 164 165 for (size_t i = 0; i < size; i++) { 166 String8 k, v; 167 k = mMap.keyAt(i); 168 v = mMap.valueAt(i); 169 170 flattened += k; 171 flattened += "="; 172 flattened += v; 173 if (i != size-1) 174 flattened += ";"; 175 } 176 177 return flattened; 178} 179 180void CameraParameters::unflatten(const String8 ¶ms) 181{ 182 const char *a = params.string(); 183 const char *b; 184 185 mMap.clear(); 186 187 for (;;) { 188 // Find the bounds of the key name. 189 b = strchr(a, '='); 190 if (b == 0) 191 break; 192 193 // Create the key string. 194 String8 k(a, (size_t)(b-a)); 195 196 // Find the value. 197 a = b+1; 198 b = strchr(a, ';'); 199 if (b == 0) { 200 // If there's no semicolon, this is the last item. 201 String8 v(a); 202 mMap.add(k, v); 203 break; 204 } 205 206 String8 v(a, (size_t)(b-a)); 207 mMap.add(k, v); 208 a = b+1; 209 } 210} 211 212 213void CameraParameters::set(const char *key, const char *value) 214{ 215 // XXX i think i can do this with strspn() 216 if (strchr(key, '=') || strchr(key, ';')) { 217 //XXX LOGE("Key \"%s\"contains invalid character (= or ;)", key); 218 return; 219 } 220 221 if (strchr(value, '=') || strchr(key, ';')) { 222 //XXX LOGE("Value \"%s\"contains invalid character (= or ;)", value); 223 return; 224 } 225 226 mMap.replaceValueFor(String8(key), String8(value)); 227} 228 229void CameraParameters::set(const char *key, int value) 230{ 231 char str[16]; 232 sprintf(str, "%d", value); 233 set(key, str); 234} 235 236void CameraParameters::setFloat(const char *key, float value) 237{ 238 char str[16]; // 14 should be enough. We overestimate to be safe. 239 snprintf(str, sizeof(str), "%g", value); 240 set(key, str); 241} 242 243const char *CameraParameters::get(const char *key) const 244{ 245 String8 v = mMap.valueFor(String8(key)); 246 if (v.length() == 0) 247 return 0; 248 return v.string(); 249} 250 251int CameraParameters::getInt(const char *key) const 252{ 253 const char *v = get(key); 254 if (v == 0) 255 return -1; 256 return strtol(v, 0, 0); 257} 258 259float CameraParameters::getFloat(const char *key) const 260{ 261 const char *v = get(key); 262 if (v == 0) return -1; 263 return strtof(v, 0); 264} 265 266void CameraParameters::remove(const char *key) 267{ 268 mMap.removeItem(String8(key)); 269} 270 271static int parse_size(const char *str, int &width, int &height) 272{ 273 // Find the width. 274 char *end; 275 int w = (int)strtol(str, &end, 10); 276 // If an 'x' does not immediately follow, give up. 277 if (*end != 'x') 278 return -1; 279 280 // Find the height, immediately after the 'x'. 281 int h = (int)strtol(end+1, 0, 10); 282 283 width = w; 284 height = h; 285 286 return 0; 287} 288 289void CameraParameters::setPreviewSize(int width, int height) 290{ 291 char str[32]; 292 sprintf(str, "%dx%d", width, height); 293 set(KEY_PREVIEW_SIZE, str); 294} 295 296void CameraParameters::getPreviewSize(int *width, int *height) const 297{ 298 *width = -1; 299 *height = -1; 300 301 // Get the current string, if it doesn't exist, leave the -1x-1 302 const char *p = get(KEY_PREVIEW_SIZE); 303 if (p == 0) 304 return; 305 306 int w, h; 307 if (parse_size(p, w, h) == 0) { 308 *width = w; 309 *height = h; 310 } 311} 312 313void CameraParameters::setPreviewFrameRate(int fps) 314{ 315 set(KEY_PREVIEW_FRAME_RATE, fps); 316} 317 318int CameraParameters::getPreviewFrameRate() const 319{ 320 return getInt(KEY_PREVIEW_FRAME_RATE); 321} 322 323void CameraParameters::setPreviewFormat(const char *format) 324{ 325 set(KEY_PREVIEW_FORMAT, format); 326} 327 328const char *CameraParameters::getPreviewFormat() const 329{ 330 return get(KEY_PREVIEW_FORMAT); 331} 332 333void CameraParameters::setPictureSize(int width, int height) 334{ 335 char str[32]; 336 sprintf(str, "%dx%d", width, height); 337 set(KEY_PICTURE_SIZE, str); 338} 339 340void CameraParameters::getPictureSize(int *width, int *height) const 341{ 342 *width = -1; 343 *height = -1; 344 345 // Get the current string, if it doesn't exist, leave the -1x-1 346 const char *p = get(KEY_PICTURE_SIZE); 347 if (p == 0) 348 return; 349 350 int w, h; 351 if (parse_size(p, w, h) == 0) { 352 *width = w; 353 *height = h; 354 } 355} 356 357void CameraParameters::setPictureFormat(const char *format) 358{ 359 set(KEY_PICTURE_FORMAT, format); 360} 361 362const char *CameraParameters::getPictureFormat() const 363{ 364 return get(KEY_PICTURE_FORMAT); 365} 366 367void CameraParameters::dump() const 368{ 369 LOGD("dump: mMap.size = %d", mMap.size()); 370 for (size_t i = 0; i < mMap.size(); i++) { 371 String8 k, v; 372 k = mMap.keyAt(i); 373 v = mMap.valueAt(i); 374 LOGD("%s: %s\n", k.string(), v.string()); 375 } 376} 377 378status_t CameraParameters::dump(int fd, const Vector<String16>& args) const 379{ 380 const size_t SIZE = 256; 381 char buffer[SIZE]; 382 String8 result; 383 snprintf(buffer, 255, "CameraParameters::dump: mMap.size = %d\n", mMap.size()); 384 result.append(buffer); 385 for (size_t i = 0; i < mMap.size(); i++) { 386 String8 k, v; 387 k = mMap.keyAt(i); 388 v = mMap.valueAt(i); 389 snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string()); 390 result.append(buffer); 391 } 392 write(fd, result.string(), result.size()); 393 return NO_ERROR; 394} 395 396}; // namespace android 397